YARN SPLICING DEVICE, YARN SPLICING SYSTEM, AND TEXTILE MACHINE
BACKGROUND OF THE INVENTION
1. Field of the Invention
5 The present invention relates to a yarn splicing device
adaptedtoperforma yarn splicingoperation, a yarn splicing system
equipped with the yarn splicing device, and a textile machine
equipped with the yarn splicing system.
10 2. Description of the Related Art
Conventionally, a yarn winding device such as an automatic
winder adapted to wind a yarn unwound from a yarn supplying bobbin
to a package is known. A plurality of such yarn winding devices
are arranged in a line to configure yarn winding equipment. The
15 yarn winding device includes a yarn splicing device adapted to
perform a yarn splicing operation on a yarn end from the package
and a yarn end from the yarn supplying side at the time of yarn
breakage, yarn cut by a yarn defect detecting device, and the like.
A spinning device adapted to generate a spun yarn from a
20 material suchas sliver, spinningequipmentconfiguredbyarranging
a plurality of spinning devices in a line are also known. The yarn
splicing device is arranged on a yarn splicing cart that travels
along the spinning equipment, where the yarn splicing operation
of the spinning device that requests the yarn splicing operation
25 is performed.
A yarn splicing device that performs untwisting of the yarn
ends to be spliced and twisting of the untwisted yarn ends using
fluid such as compressed air, or the like (see e.g., Japanese
Unexamined Patent Publication No. 59-211632) is known for the yarn
30 splicing device. The yarn splicing device described in Japanese
Unexamined Patent Publication No. 59-211632 includes an untwisting
nozzle adapted to untwist the yarn ends, and a twisting nozzle
adaptedtotwistthe untwisted yarn ends. The yarn splicing device
executes steps such as introduction, untwisting, twisting, and the
like of the yarn ends to perform the yarn splicing operation.
Japanese Unexamined Patent Publication No. 3-64433
discloses a technique in which an opening facing an air chamber
is formed and in which air of different whirling direction is
5 alternately injected in the twisting of the yarn ends.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a yarn
splicing device, a yarn splicing system, and a textile machine
10 capable of selecting and changing a whirling direction and a
generating region of the airflow in accordance with the property
ofthe yarn to be performedwiththe yarn splicing operation without
changing the component even when the type of yarn is changed.
This object is achieved by a yarn splicing device
15 according to claim 1, a yarn splicing system according to claim
3 or 4, and a textile machine according to claim 10.
The invention is based on the following findings. In a yarn
splicing device described e.g. in Japanese Unexamined Patent
20 Publication No. 59-211632, the compressed air is first supplied
into each untwisting nozzle to generate an untwisting airflow
including whirling airflow, and the yarn ends are suctioned into
theuntwistingnozzlebythe untwistingairflow. In the untwisting
nozzle, the yarn ends are untwisted by the action of the untwisting
25 airflow thus raveling out a fiber bundle. The untwisted portions
of the yarn ends are then moved into the twisting nozzle. The
compressedair is also suppliedintothetwistingnozzletogenerate
a twisting airflow including the whirling airflow. The untwisted
portions of the yarn ends are whirled by the twisting airflow to
30 be entangled and twisted.
The yarn has various properties such as material, thickness,
and twisting direction. For example, the twisting of the yarn
includes an S twist (rightward twist) in which the twist is made
in the clockwise direction and a Z twist (leftward twist) in which
the twist is made in the counterclockwise direction, the S twist
and the Z twist having opposite twisting directions. Thus, the
untwistingdirectionis opposite and the twisting direction is also
opposite in the S twist and the Z twist. For example, if the yarn
5 applied up to the relevant point in the yarn winding device is the
yarn of S twist and the newly applied yarn is the yarn of Z twist,
the directions of untwisting and twisting are opposite, and hence
the whirling direction of the airflow generated at the untwisting
nozzle and the twisting nozzle needed to be changed as an initial
10 setup operation of the yarn winding device. The nozzles needed to
be changed to a different twisting nozzle and untwisting nozzle
of a region for generating the airflow depending on the property
of the yarn.
Thus, whenthetypeofyarntobeappliedchanges, the property
15 of such yarn also differs, whereby the twisting condition suited
for the twisting of the yarn and the untwisting condition suited
for the untwisting of the yarn such as the whirling direction of
the airflow and the generating region of the airflow differ from
each other. Thus, when the type of yarn is changed, the component
20 of the yarn splicing device needed to be changed to change the
whirling direction and the generating region of the airflow, which
is inconvenient.
The technique described e.g. in Japanese Unexamined Patent
Publication No. 3-64433, however, is a technique of alternately
25 injecting air of different whirling direction in one twisting
operation irrespective of the original twisting direction of the
yarn to be performed with the yarn splicing operation. Thus, such
technique is not a technique of selecting and changing the whirling
direction and the generating region of the airflow according to
30 the property of the yarn to be performed with the yarn splicing
operation.
The problem to be solved by the present invention is as
mentioned above, and now, the means for solving such problem will
be described below.
In other words, the yarn splicing device of the present
5 invention is a yarn splicing device adapted to perform a yarn
splicing operation of yarn ends, and includes a twisting nozzle
and a twisting airflow supplying mechanism. The twisting nozzle
twists the yarn ends. The twisting airflow supplyingmechanismis
configured to supply compressed air to generate twisting airflow
10 with respect to the twisting nozzle and to switch a whirling
direction ofthe twisting airflow and/or switch a generating region
ofthe twisting airflow. The twisting airflow for twisting the yarn
ends is generated in the whirling direction and/or the generating
region in accordance with a twisting condition of the yarn to be
15 performed with the yarn splicing operation by a control on the
twisting airflow supplying mechanism.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front simplified view and a block diagram
20 illustrating a yarn winding unit 11 applied with a yarn splicing
device 21 according to a first example;
FIG. 2 is a perspective view of the yarn splicing device 21;
FIG. 3is a simplifiedviewof*a structure ofthe yarn splicing
device 21;
25 FIG. 4 is a simplified view illustrating a yarn splicing
system 100 according to the first example;
FIG. 5A is a plan view of a twisting nozzle 73;
FIG. 5B is a plan enlarged view of the twisting nozzle 73;
FIG. 5C is a front enlarged view of the twisting nozzle 73;
FIG. 6A is a plan view of the twisting nozzle 73:
FIG. 6B is a plan enlarged view of the twisting nozzle 73;
FIG. 6C is a front enlarged view of the twisting nozzle 73;
FIG. 7 is a simplified view illustrating a yarn splicing
system 100 according to a second example;
FIG. 8A is a plan view of the twisting nozzle 73:
FIG. 8B is a plan enlarged view of the twisting nozzle 73;
FIG. 8C is a front enlarged view of the twisting nozzle 73;
FIG. 9A is a plan view of the twisting nozzle 73:
FIG. 9B is a plan enlarged view of the twisting nozzle 73;
FIG. 9C is a front enlarged view of the twisting nozzle 73;
FIG. 10A is a plan view of the twisting nozzle 73:
FIG. 10B is a plan enlarged view of the twisting nozzle 73;
FIG. 10C is a front enlarged view of the twisting nozzle 73;
FIG. 11A is a variant of the twisting nozzle 73 according to
the first example; and
FIG. 11B is a variant of the twisting nozzle 73 according to
the second example.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Embodiments of the present invention will be hereinafter
described using the drawings.
A yarn splicing system applied with a yarn splicing device
21 according to a first example of the present invention, and an
20 automatic winder serving as a textile machine equipped with the
yarn splicing system 100 will be described using FIG. 1 to FIG.
6.
An outline of a yarn winding unit (yarn winding device) 11
that configures the automatic winder will be described first. As
25 illustrated in FIG. 1, the yarn winding unit 11 is adapted to form
a yarn layer on a winding tube 92 while traversing a yarn Y unwound
from a yarn supplying bobbin 91 by a traverse device 12 to produce
a package P. The travelling direction of the yarn Y is a direction
from the yarn supplying bobbin 91 toward the package P. One yarn
30 winding unit 11 is illustrated in FIG. 1, but the yarn winding unit
11 may be arranged in plurals to configure an automatic winder.
In the present specification, the winding tube 92 and the
package Pare sometimes collectivelyreferredtoas awindingbobbin
B. In other words, the winding bobbin B in which the yarn layer
is not formed is the winding tube 92, and the winding bobbin B in
which the yarn layer is formed is the package P.
As illustrated in FIG. 1, the yarn winding unit 11 includes
a winding section 2, a contact roller 14, the traverse device 12,
5 and a yarn supplying section 3.
The winding section 2 is a section adapted to wind the yarn
Y to the package P. The winding section 2 includes a cradle 13,
a bearing (not illustrated), and a winding bobbin drive motor 18.
The cradle 13 can freely swing about a swing shaft 15. The bearing
10 is arranged on the cradle 13. The winding bobbin B is detachably
attached to the bearing, and the cradle 13 rotatably grips both
ends of the winding bobbin B. When the yarn Y is wound around the
winding bobbin Bthus increasing the diameter ofthe winding bobbin
B, the cradle 13 swings. An appropriate contact between a
15 peripheral surface of the winding bobbin B and the contact roller
14 is thereby maintained.
The winding bobbin drive motor 18 is a drive section adapted
to d i r e c t l y a n d r o t a t a b l y d r i v e t h e w i n d i n g b o b b i n B . Adrive shaft
of the winding bobbin drive motor 18 is coupled with the winding
20 bobbin B in a relatively non-rotatable manner when the winding
bobbinBis grippedbythebearingofthe cradle13 (so-calleddirect
drive method). The winding section 2 winds the yarn Y by actively
and rotatably driving the winding bobbin B by the winding bobbin
drive motor 18.
25 The cradle 13 includes awindingbobbin rotation speed sensor
32 and a winding bobbin diameter sensor 33. The winding bobbin
rotation speed sensor 32 detects the rotation speed of the winding
bobbin B. The winding bobbin diameter sensor 33 detects the
diameter of the winding bobbin B. The winding bobbin diameter
30 sensor 33 is configured with a rotary encoder, or the like, and
is adapted to detect the diameter of the winding bobbin B by
detecting the swing angle of the cradle 13.
The contact roller 14 is a roller that rotates accompanying
the rotation caused by being brought into contact with the
p e r i p h e r a l s u r f a c e of t h e winding bobbin B. The contact r o l l e r 1 4
pushes t h e yarn Y a g a i n s t t h e s u r f a c e of t h e winding bobbin B a t
an a p p r o p r i a t e p r e s s u r e and a d j u s t s t h e shape of t h e winding bobbin
B (package P) .
5 The t r a v e r s e device 12 is driven independent from t h e d r i v e
of t h e winding bobbin B t o t r a v e r s e t h e yarn Y t o be wound around
t h e winding bobbin B. The t r a v e r s e device 12 includes a t r a v e r s e
guide 17 and a t r a v e r s e guide d r i v e motor 19.
The t r a v e r s e guide 17 is amember a d a p t e d t o t r a v e r s e t h e yarn
10 Y by engaging with t h e yarn Y. The t r a v e r s e guide d r i v e motor 19
d r i v e s t h e t r a v e r s e guide 17 i n a d i r e c t i o n of a winding width o f
t h e winding bobbin B, a s i l l u s t r a t e d with an arrow i n FIG. 1, t h a t
is, t o r e c i p r o c a t e between both ends, a f i r s t end ( i l l u s t r a t e d end
on l e f t s i d e ) and a second end ( i l l u s t r a t e d end on r i g h t s i d e ) ,
15 o f t h e w i n d i n g b o b b i n B . I n t h e p r e s e n t example, thewindingbobbin
B is d i r e c t l y and r o t a t a b l y driven, and t h e t r a v e r s e device 12 is
driven independent from t h e d r i v e of t h e winding bobbin B, but t h e
traversedevicemaybeatraversedrum. T h e t r a v e r s e d r u m i s b r o u g h t
i n t o c o n t a c t w i t h t h e o u t e r p e r i p h e r a l s u r f a c e o f t h e w i n d i n g b o b b i n
20 B and r o t a t e s , thus causing t h e winding bobbin B t o r o t a t e
accompanyingthe r o t a t i o n of t h e t r a v e r s e drum. A t r a v e r s e groove
is formed i n t h e t r a v e r s e drum, and t h e yarn Y is wound around t h e
winding bobbin B while being t r a v e r s e d by t h e t r a v e r s e groove.
The yarn supplying s e c t i o n 3 is a s e c t i o n adapted t o supply
25 t h e yarn Y t o be wound around t h e winding bobbin B. The yarn
supplying s e c t i o n 3 includes a y a r n supplying bobbin holding peg
(not i l l u s t r a t e d ) , and t h e y a r n supplying bobbin 91 is a t t a c h e d
t o t h e yarnsupplyingbobbinholdingpeg. A t e n s i o n a p p l y i n g d e v i c e
20, a yarn s p l i c i n g device 21, and a yarn c l e a r e r 22 a r e arranged
30 i n order from t h e yarn supplying s e c t i o n 3 on a yarn t r a v e l l i n g
path between t h e yarn supplying s e c t i o n 3 and t h e c o n t a c t r o l l e r
1 4 .
The t e n s i o n applying device 20 is adapted t o apply an
a p p r o p r i a t e t e n s i o n on t h e yarn Y. The yarn c l e a r e r 22 is adapted
0 t o d e t e c t a t h i c k n e s s of t h e yarn Y passing through t h e p o r t i o n
of t h e d e t e c t i n g s e c t i o n by a sensor and analyze a s i g n a l from t h e
sensor by an analyzer 23 t o d e t e c t a yarn d e f e c t such a s a s l u b .
The yarn c l e a r e r 22 may be configured t o d e t e c t presence/absence
5 o f f o r e i g n s u b s t a n c e c o n t a i n e d i n t h e y a r n Y o t h e r t h a n t h e t h i c k n e s s
abnormality of t h e yarn Y . The yarn c l e a r e r 22 includes a c u t t e r
t h a t cut s t h e y a r n y w h e n t h e y a r n d e f e c t is d e t e c t e d ( c l e a r e r c u t ) ,
o r t h a t c u t s t h e yarn Y t o i n t e r r u p t t h e winding due t o t r a v e r s e
f a i l u r e although t h e yarn d e f e c t is n o t p r e s e n t ( a d d i t i o n a l c u t ) .
10 The yarn s p l i c i n g device 21 is adapted t o perform t h e yarn
s p l i c i n g o p e r a t i o n on a yarn end YA of a lower yarn from t h e yarn
supplying bobbin 91 and a yarn end YB o f an upper yarn from t h e
winding bobbin B (package P) when t h e yarn cut is performed by t h e
yarn c l e a r e r 22 o r when t h e yarn breakage o f t h e yarn Y from t h e
15 yarn supplying bobbin 91 occurs. The yarn s p l i c i n g device 21 w i l l
b e d e s c r i b e d i n d e t a i l l a t e r .
A suction pipe 24 adapted t o s u c t i o n and catch t h e yarn end
YA from t h e yarn supplying bobbin 91 and t o guide t h e yarn end YA
t o t h e yarn s p l i c i n g device 21 is arranged on a lower s i d e of t h e
20 yarn s p l i c i n g device 21 (upstream i n t h e t r a v e l l i n g d i r e c t i o n of
t h e yarn Y ) . A s u c t i o n mouth 27 adapted t o s u c t i o n and catch t h e
yarn end YB from t h e winding bobbin B and t o guide t h e yarn end
YB t o t h e yarn s p l i c i n g device 21 is arranged on an upper s i d e of
t h e yarn s p l i c i n g device 21 (downstreamin t h e t r a v e l l i n g d i r e c t i o n
25 of t h e yarn Y) . The s u c t i o n pipe 24 is configured t o a pipe-shape
and is arranged t o v e r t i c a l l y swing about a s h a f t 25, an opening
26 being formed a t a d i s t a l end t h e r e o f . The s u c t i o n mouth 27 is
a l s o configured t o a pipe-shape and is arranged t o v e r t i c a l l y swing
a b o u t a s h a f t 2 8 , a n o p e n i n g 2 9 b e i n g f o r m e d a t a d i s t a l e n d t h e r e o f .
30 The s u c t i o n p i p e 24 and t h e s u c t i o n mouth 27 a r e connected t o a
negative pressure source (not i l l u s t r a t e d ) , and causes a s u c t i o n
a c t i o n t o be generated a t t h e opening 26 and t h e opening 29 a t t h e
d i s t a l ends.
A c o n f i g u r a t i o n f o r c o n t r o l l i n g an o p e r a t i o n of t h e yarn
winding unit 11 will be described below. As illustrated in FIG.
1, the yarn winding unit 11 includes a unit control section (control
section) 36 adapted to individually control the yarn winding unit
11. The unit control section 36 is connected with a winding bobbin
5 drive control section 31 and a traverse control section 34. The
y a r n s p l i c i n g d e v i c e 2 1 i s a l s o c o n n e c t e d t o t h e u n i t c o n t r o l s e c t i o n
36 to control the operation of the yarn splicing device 21. The
unit control section 36 is connected to the main control section
37. The main control section 37 comprehensively controls the
10 p l u r a l i t y o f y a r n w i n d i n g u n i t s 1 1 c o n f i g u r i n g t h e a u t o m a t i c w i n d e r .
The main control section 37 includes a setting section 38.
The setting section 38 includes an operation input unit such as
a touch panel that can be operated by an operator. The setting
section 38 can collectively carry out the operation setting of each
15 section for each yarn winding unit 11.
The unit control section 36, the main control section 37, the
winding bobbin drive control section 31, and the traverse control
section 34 include a CPU serving as a calculating section, a ROM,
a RAM, or the like serving as a storing section, and the like.
20 The configuration of the yarn splicing device 21 will be
described using FIG. 2 and FIG. 3. The yarn end YA from the yarn
supplying bobbin 91 and the yarn end YB from the winding bobbin
B are guided to the yarn splicing device 21 by the suction mouth
27 and the suction pipe 24 of the yarn winding unit 11. The
25 untwisting step and the twisting step of the yarn ends YA, YB in
the yarn splicing device 21 are carried out using compressed air.
The overall configuration of the yarn splicing device 21 will be
described, and then, the yarn splicing system 100 including the
yarn splicing device 21 will be described.
30 T h e y a r n s p l i c i n g d e v i c e 2 1 i n c l u d e s a f i r s t u n t w i s t i n g n o z z l e
71, a second untwisting nozzle 72, and a twisting nozzle 73. The
yarn splicing device 21 includes a yarn gathering lever 76, a yarn
end cutter 77, a clamp section 78, and a yarn holding lever 79 for
introducing the yarn ends YA, YB, and adjusting the positions of
* t h e yarn ends YA, YB.
The f i r s t untwisting nozzle 7 1 i s aportionadaptedtoperform,
ontheyarnendYA, untwistingprocessingtoprepare f o r t h e t w i s t i n g
of t h e yarn end YA. The f i r s t u n t w i s t i n g nozzle 71 s u c t i o n s t h e
5 yarn end YA from t h e yarn supplying bobbin 91, and performs
untwisting. The f i r s t untwisting nozzle 71 is connected t o an
untwisting a i r f l o w supply mechanism 4 1 . The u n t w i s t i n g a i r f l o w
includingspiralairflowis g e n e r a t e d a t t h e f i r s t u n t w i s t i n g n o z z l e
71 by i n j e c t i n g t h e compressed a i r f o r u n t w i s t i n g i n t o t h e f i r s t
10 u n t w i s t i n g n o z z l e 7 1 . TheyarnendYAfromtheyarnsupplyingbobbin
9 1 i s s u c t i o n e d i n t o t h e f i r s t u n t w i s t i n g n o z z l e 7 1 b y t h e u n t w i s t i n g
a i r f l o w , whereby t h e f i b e r s of t h e yarn end YA a r e r a v e l e d .
The second u n t w i s t i n g nozzle 72 is a p o r t i o n adapted t o
perform, on t h e yarn end YB, u n t w i s t i n g processing t o prepare f o r
15 t h e t w i s t i n g of t h e yarn end YB. The second u n t w i s t i n g nozzle 72
s u c t i o n s t h e yarn end YB from t h e winding bobbin B, and performs
untwisting. The second u n t w i s t i n g n o z z l e 72 is connected t o t h e
untwisting a i r f l o w supply mechanism 41. The u n t w i s t i n g a i r f l o w
including s p i r a l a i r f l o w is generated a t t h e second u n t w i s t i n g
20 nozzle 72 by i n j e c t i n g t h e compressed a i r f o r u n t w i s t i n g i n t o t h e
s e c o n d u n t w i s t i n g n o z z l e 72. TheyarnendYBfromthewindingbobbin
B i s s u c t i o n e d i n t o t h e s e c o n d u n t w i s t i n g n o z z l e 7 2 b y t h e u n t w i s t i n g
a i r f l o w , whereby t h e f i b e r s of t h e yarn end YB a r e r a v e l e d .
The t w i s t i n g nozzle 73 is t h e p o r t i o n t h a t performs t w i s t i n g
25 of t h e yarn ends YA, YB. S p e c i f i c a l l y , t h e yarn ends YA, YB
untwisted by t h e f i r s t u n t w i s t i n g n o z z l e 7 1 and t h e second
u n t w i s t i n g n o z z l e 72 a r e entangled and connected. The t w i s t i n g
nozzle 73 is connected t o a t w i s t i n g a i r f l o w supply mechanism 42.
The t w i s t i n g a i r f l o w is g e n e r a t e d b y t h e compressedair f o r t w i s t i n g
30 i n j e c t e d i n t o t h e t w i s t i n g nozzle 73, whereby t h e untwisted yarn
ends YA, YB a r e t w i s t e d and connected.
The yarn g a t h e r i n g l e v e r 76 i n c l u d e s a first yarn g a t h e r i n g
l e v e r 76a and a second yarn g a t h e r i n g l e v e r 76b. The f i r s t yarn
gathering l e v e r 76a and t h e second yarn g a t h e r i n g l e v e r 76b a d j u s t
* the positions of the yarn ends YA, YB.
The yarn end cutter 77 includes a first yarn end cutter 77a
and a second yarn end cutter 77b. The first yarn end cutter 77a
and the second yarn end cutter 77b cut the yarn ends YA, YB,
5 respectively, to an appropriate length before the untwisting of
the yarn ends YA, YB.
The clamp section 78 includes a first clamp plate 78a and a
second clamp plate 78b. The first clamp plate 78a and the second
clamp plate 78b clamp and fix the yarn ends YA, YB.
10 ~ h e y a r n h o l d i n g l e v e r 7 9 i n c l u d e s a f i r s t f o r k 7 9 a a n d a s e c o n d
fork 79b. The first fork 79a anda second fork 79b fix the positions
of the untwisted portion of the yarn ends YA, YB such that the
untwisted portions of the yarn ends YA, YB are positioned in the
twisting nozzle 73.
15 The positions of the untwisted portions of the yarn ends YA,
YB are fixed in the twisting nozzle 73 by the first fork 79a and
the second fork 79b, and then the compressed air for twisting is
i n j e c t e d b y t h e t w i s t i n g n o z z l e 7 3 t o t w i s t a n d c o n n e c t t h e u n t w i s t e d
portions of the yarn ends YA, YB.
20 As illustrated in FIG. 4, the yarn splicing system 100
includes an air supplying device 61 common to the yarn splicing
device 21 of each yarn winding unit 11. The air supplying device
61is a device adaptedto supply compressed air to the yarn splicing
device21. Theair supplyingdevice 6 1 i s c o n n e c t e d t o a n u n t w i s t i n g
25 airpiping 62bywayofa first depressurizationvalve 64. The first
depressurization valve 64 is a valve adapted to adjust the
compressed air from the air supplying device 61 to the pressure
suited for the untwisting of the yarn ends YA, YB. The untwisting
air piping 62 is a piping that supplies the compressed air for
30 untwisting to the yarn splicing device 21 of each yarn winding unit
11. The air supplying device 61 is connected to a twisting air
piping 63 by way of a second depressurization valve 65. The second
depressurization valve 65 is a valve adapted to adjust the
compressed air from the air supplying device 61 to the pressure
e suited for the twisting of the yarn ends YA, YB. The twisting air
piping 63 is a piping that supplies the compressed air for twisting
to the yarn splicing device 21 of each yarn winding unit 11.
The first untwisting nozzle 71', the second untwisting nozzle
5 72, and the twisting nozzle 73 will be described in detail below.
As illustrated in F I G . 3 and F I G . 4, the first untwisting
nozzle 71 is configured to generate the untwisting airflow for
untwisting the yarn end YA at different positions to prepare for
the twisting of the yarn ends YA, YB by the twisting nozzle 73.
10 The first untwisting nozzle 71 is formed with an S first untwisting
injection hole 711 and a Z first untwisting injection hole 712.
The S first untwisting injection hole 711 is an injection hole of
the compressed air for generating the untwisting airflow for
untwistingthe yarnendYAofthe yarnywhenthe yarnYis Stwisted.
15 The Z first untwisting injection hole 712 is an injection hole of
the compressed air for generating the untwisting airflow for
untwistingthe yarn endYAofthe yarnywhenthe yarnYis Ztwisted.
The whirling direction of the untwisting airflow for untwisting
the yarn end YA is opposite for when the yarn Y is S twisted and
20 for when the yarn Y is Z twisted. Thus, the S first untwisting
injection hole 711 and the Z first untwisting injection hole 712
are arranged with being shifted by about 90 degrees to generate
the untwisting airflow at different positions with respect to the
yarn endYA. Specific arrangement is similar tothe ejection holes
25 33, 34 described in F I G . 5 and F I G . 6 of Japanese Unexamined Patent
Publication No. 62-3741.
The seconduntwistingnozzle 72 is configuredto generate the
untwisting airflow for untwisting the yarn end YB at different
positions to prepare for the twisting of the yarn ends YA, YB by
30 the twisting nozzle 73. The second untwisting nozzle 72 is formed
with an S second untwisting injection hole 721 and a Z second
untwisting injection hole 722. The S second untwisting injection
hole 721 is an injection hole of the compressed air for generating
the untwisting airflow for untwisting the yarn end YB of the yarn
Y when the yarn Y is S twisted. The Z second untwisting injection
hole 722 is an injection hole of the compressed air for generating
the untwisting airflow for untwisting the yarn end YB of the yarn
Y when the yarn Y is Z twisted. The whirling direction of the
untwisting airflow for untwisting the yarn end YB is opposite for
when the yarn Y is S twisted and for when the yarn Y is Z twisted.
Thus, the S second untwisting injection hole 721 and the Z second
untwisting injection hole 722 are arranged with being shifted by
about 90 degrees to generate the untwisting airflow at different
positions with respect to the yarn end YB. Specific arrangement
is similar to the ejection holes 33, 34 described in FIG. 5 and
FIG. 6 of Japanese Unexamined Patent Publication No. 62-3741.
As illustrated in FIG. 4, FIG. 5, and FIG. 6, the twisting
nozzle 73 of the present example is configured so that the twisting
airflow for twisting the yarn ends YA, YB can be generated in
different whirling directions. As illustrated in FIG. 5 and FIG.
6, the twisting nozzle 73 includes a guiding section 51, a slit
52, an air chamber 53, and a plurality of twisting injection holes
54. The guiding section 51 is a cutout opened to a V-shape in plan
view. The guiding section 51is aportion adaptedto guide the yarn
ends YA, YB to the slit 52. The slit 52 is a portion adapted to
introduce the yarn ends YA, YB guided by the guiding section 51
to the air chamber 53.
The air chamber 53 is a portion arranged with the yarn ends
YA, YB to be performed with the yarn splicing operation overlapped
from different directions. In the air chamber 53, the twisting
airflow for twisting the yarn ends YA, YB with the yarn ends YA,
YB arranged is generated. The air chamber 53 is configured by a
first air chamber 531 and second air chamber 532. In FIG. 5C, the
first air chamber 531 illustrated on the upper side is formed with
a cylindrical circumferential surface, and is adaptedto whirl the
yarn end YA. In FIG. 5C, the second air chamber 532 illustrated
on the lower side is formed with a cylindrical circumferential
surface, and is adapted to whirl the yarn end YB. The air chamber
e 53 of the present example is arranged with the center lines of the
first air chamber 531 and the second air chamber 532 being offset.
The plurality of twisting injection holes 54 are injection
holesofthecompressedairformedontherespectivecircumferential
5 surfaces of the first air chamber 531 and the second air chamber
532. The plurality of twisting injection holes 54 inject the
compressed air in a tangential direction of the air chamber 53 to
generate the twisting airflow in the first air chamber 531 and the
second air chamber 532. The twisting injection hole 54 includes
10 an S twisting injection hole 541 and a Z twisting injection hole
542. The S twisting injection hole 541 is an injection hole for
generating the twisting airflow for twisting the yarn ends YA, YB
of the yarn Y when the yarn Y is S twisted. The Z twisting injection
hole 542 is an injection hole for generating the twisting airflow
15 for twisting the yarn ends YA, YB of the yarn Y when the yarn Y
is Z twisted. The whirling direction of the twisting airflow for
twisting the yarn ends YA, YB of the yarn Y is opposite for when
the yarn Y is S twisted and for when the yarn Y is Z twisted. Thus,
the S twisting injection hole 541 and the Z twisting injection hole
20 542 are arranged at positions facing each other with the slit 52
in between, and are formed to generate the twisting airflow in
directions opposite to each other. The directions ofthe S twisting
injection hole 541 and the Z twisting injection hole 542 are
tangential direction of the circumferential wall of the first air
25 chamber 531 and the second air chamber 532, respectively, and the
twisting airflow is formed to be in a clockwise direction and a
counterclockwise direction. The S twisting injection hole 541 and
the Z twisting injection hole 542 are formed at one area each in
the first air chamber 531 and the second air chamber 532,
30 respectively. The S twisting injection hole 541 and the Z twisting
injection hole 542 of the first air chamber 531 and the second air
chamber 532 are formed side by side on the same circumference.
The twisting nozzle 73 is attached to a block 55 arranged in
t h e y a r n s p l i c i n g d e v i c e 2 1 . Theblock55is formedwithanSairflow
0 path 551 and a Z airflow path 552. The S airflow path 551 is a flow
pathadaptedtosupplythecompressedairtothe Stwistinginjection
hole 541. The Z airflow path 552 is a flow path adapted to supply
the compressed air to the Z twisting injection hole 542. A space
5 communicating fromthe S airflow path 551tothe Stwistinginjection
hole 541 is formed between the twisting nozzle 73 and the block
55 (not illustrated). This space becomes an airflow path from the
S airflow path 551 to the S twisting injection hole 541 and supplies
the compressed air to the S twisting injection hole 541. A space
10 communicating fromthe Z a i r f l o w p a t h 5 5 2 t o t h e Z t w i s t i n g i n j e c t i o n
hole 542 is formed between the twisting nozzle 73 and the block
55 (not illustrated). This space becomes an airflow path from the
Z airflow path 552 to the Z twisting injection hole 542 and supplies
the compressed air to the Z twisting injection hole 542. The S
15 twisting flow path 421, to be described later, is connected to the
Sairflowpath 551, andthe Ztwisting flowpath 422, tobe described
later, is connected to the Z airflow path 552.
The yarn splicing system 100 including the yarn splicing
device 21 will now be described. The yarn splicing system 100 of
20 the present example is a system that can select and change the
generating position of the untwisting air flow and the whirling
direction of the twisting airflow without performing a complicated
operation or replacing the component of the yarn splicing device.
The yarn splicing system 100 is configured by the yarn splicing
25 device 21, the setting section 38 of the main control section 37,
and the unit control section 36 of the yarn winding unit 11.
As illustrated in F I G . 4, F I G . 5, and F I G . 6, the yarn splicing
device 21 includes an untwisting airflow supplying mechanism 41
and a twisting airflow supplying mechanism 42 as a mechanism for
30 supplying the compressed air to the first untwisting nozzle 71,
the second untwisting nozzle 72, and the twisting nozzle 73.
The untwisting airflow supplying mechanism 41 supplies the
compressed air to the first untwisting nozzle 71 and the second
untwisting nozzle 72 in a manner the generating position of the
a untwisting airflow can be switched. The untwisting airflow
supplying mechanism 41 includes a branched point 430, an S
untwisting flow path 411, a Z untwisting flow path 412, an S
untwisting valve 413, and a Z untwisting valve 414.
5 The Suntwisting flowpath 4 1 1 i s a flowpathadaptedto supply
the compressed air from the untwisting air piping 62 to the S first
untwistinginjectionhole 711andthe S seconduntwistinginjection
hole 721. An S untwisting valve 413 is connected in the middle of
the S untwisting flow path 411. The S untwisting valve 413 is an
10 electromagnetic valve adapted to perform opening/closing of the
S untwisting flow path 411 for each of the generating positions
of the untwisting airflow based on a control signal.
The Z untwisting flowpath 412 is a flowpathadaptedto supply
the compressed air from the untwisting air piping 62 to the Z first
15 untwistinginjection hole 712 and the Z seconduntwistinginjection
hole 722. A Z untwisting valve 414 is connected in the middle of
the Z untwisting flow path 412. The Z untwisting valve 414 is an
electromagnetic valve adapted to perform opening/closing of the
Z untwisting flow path 412 for each of the generating positions
20 of the untwisting airflow based on a control signal.
The twisting airflow supplying mechanism 42 supplies the
compressed air to the twisting nozzle 73 for each of the whirling
directions ofthe twisting airflow. The twisting airflow supplying
mechanism 42 includes a branched point 431, the S twisting flow
25 path 421, the Z twisting flow path 422, the S twisting valve 423,
and the Z twisting valve 424.
The S twisting flow path 421 is a flow path for supplying the
compressed air for each of the whirling directions of the twisting
airflow, and is a flow path for supplying the compressed air from
30 the twisting air piping 63 to the S twisting injection hole 541.
The Stwistingvalve 423 is connected in themiddle ofthe Stwisting
flow path 421. The Stwisting valve 423 is an electromagnetic valve
for performing opening/closing of the S twisting flow path 421 for
each of the whirling directions of the twisting airflow based on
0 the control signal.
The Z twisting flow path 422 is a flow path for supplying the
compressed air for each of the whirling directions of the twisting
airflow, and is a flow path for supplying the compressed air from
5 the twisting air piping 63 to the Z twisting injection hole 542.
The Ztwistingvalve 424 is connected in themiddle ofthe Ztwisting
flowpath 422. The Ztwistingvalve 424 is anelectromagneticvalve
for performing opening/closing of the Z twisting flow path 422 for
each of the whirling directions of the twisting airflow based on
10 the control signal.
In the setting section 38 of the main control section 37, the
o p e r a t i o n s e t t i n g o f t h e y a r n s p l i c i n g d e v i c e 2 1 o f e a c h y a r n w i n d i n g
unit 11 can be collectively performed (see FIG. 1). The operator
operates the touch panel of the setting section 38 to perform the
15 setting. Forthe operation setting of the yarn splicing device 21,
the generating position of the untwisting airflow for untwisting
the yarn ends YA, YB and the whirling direction of the twisting
airflow for twisting the yarn ends YA, YB in accordance with the
untwisting condition and the twisting condition of the yarn Y to
20 be performed with the yarn splicing operation are set as a set
untwisting condition and set twisting condition. In the present
example, the generating position of the untwisting airflow for
untwisting the yarn ends YA, YB and the whirling direction of the
twisting airflow for twisting the yarn ends YA, YB are determined
25 and the set untwisting condition and the set twisting condition
are set by selecting by the touch panel of the setting section 38
whether the yarn Y to be spliced is the yarn of S twist or the yarn
of Z twist.
The main control section 37 transmits the set content set by
30 the setting section 38 to the unit control section 36 of each yarn
winding unit 11. The unit control section 36 controls the
untwisting airflow supplying mechanism 41 and the twisting airflow
supplying mechanism 42 to drive the yarn splicing device 21 based
on the set untwisting condition and the set twisting condition.
Specifically, the unit control section 36 performs the
open/close control with respect to the S untwisting valve 413 and
the Z untwisting valve 414 of the untwisting airflow supplying
mechanism 41to generate the untwisting airflow for untwisting the
5 yarn ends YA, YB at the position in accordance with the untwisting
condition of the yarn to be performed with the yarn splicing
operation. The unit control section 36 also performs the
open/close control of the S twisting valve 423 and the Z twisting
valve 424 ofthe twisting airflow supplyingmechanism 42to generate
10 the twisting airflow for twisting the yarn ends YA, YB in the
whirling direction in accordance with the twisting condition of
the yarn to be performed with the yarn splicing operation.
The specific operation of the yarn splicing system 100 will
now be described.
First, a case in which the operator operates the touch panel
of the setting section 38 to select that the yarn Y to be performed
with the yarn splicing operation is S twist will be described with
reference to FIG. 4 and FIG. 5. In this case, the generating
position of the untwisting airflow for untwisting the yarn ends
20 YA, YB is determined as the position of performing the untwisting
with respect to the yarn Y of S twist and the whirling direction
of the twisting airflow for twisting the yarn ends YA, YB is
determined as the whirling direction of the twisting airflow for
performing the twisting with respect to the yarn Y of S twist, and
25 such position and whirling direction are set as the set untwisting
conditionand the set twisting condition. The unit control section
36 controls the untwisting,airflow supplying mechanism 41 and the
twisting airflow supplying mechanism 42 to drive the yarn splicing
device 21basedonthe set untwisting condition and the set twisting
30 condition.
Specifically, the unit control section 36transmits a control
signal for opening/closing the valve in the untwisting operation
to the S untwisting valve 413 of the untwisting airflow supplying
mechanism 41. The S untwisting valve 413 opens/closes the S
e untwisting flow path 411 in the untwisting operation based on the
control signal. A control signal for continuously closing the
valveistransmittedtothe Z untwistingvalve 414 ofthe untwisting
airflow supplying mechanism 41. The Z untwisting valve 414
5 continuouslyclosesthe Z untwisting f l o w p a t h 4 1 2 i n t h e u n t w i s t i n g
operation based on the control signal. According to such control,
the untwisting airflow can be generated at the position of
untwisting the yarn ends YA, YB of the yarn Y of S twist in the
untwisting operation at the first untwisting nozzle 7 1 and the
10 second untwisting nozzle 72.
The unit control section 36 transmits a control signal for
opening/closing the valve in the twisting operation to the S
twisting valve 423 of the twisting airflow supplying mechanism 42.
The S twisting valve 423 opens/closes the S twisting flow path 421
15 in the twisting operation based on the control signal. A control
signal for continuously closing the valve is transmitted to the
Z twisting valve 424 of the twisting airflow supplying mechanism
42. The Z twisting valve 424 continuously closes the Z twisting
flow path 422 in the twisting operationbasedon the control signal.
20 According to such control, the twisting airflow in the whirling
direction for twisting the yarn ends YA, YB of the yarn Y of S twist
can be generated in the twisting operation at the twisting nozzle
73.
Next, a case in which the operator operates the touch panel
25 of the setting section 38 to select that the yarn Y to be performed
with the yarn splicing operation is Z twist will be described with
reference to FIG. 4 and FIG. 6. In this case, the generating
position of the untwisting airflow for untwisting the yarn ends
YA, YB is determined as the position of performing the untwisting
30 with respect to the yarn Y of Z twist and the whirling direction
of the twisting airflow for twisting the yarn ends YA, YB is
determined as the whirling direction of the twisting airflow for
performing the twisting with respect to the yarn Y of Z twist, and
such position and whirling direction are set as the set untwisting
condition and the set twisting condition. The unit control section
36 controls the untwisting airflow supplying mechanism 41 and the
twisting airflow supplyingmechanism 42 to drive the yarn splicing
device 21based on the set untwisting condition and the set twisting
5 condition.
Specifically, the unit control section 36transmits a control
signal for continuously closing the valve with respect to the S
untwisting valve 413 of the untwisting airflow supplyingmechanism
41. TheSuntwistingvalve 413 continuouslyclosesthe Suntwisting
10 f l o w p a t h 4 1 1 i n t h e u n t w i s t i n g o p e r a t i o n b a s e d o n t h e c o n t r o l s i g n a l .
A control signal for opening/closingthe valve is transmitted with
respect to the Z untwisting valve 414 of the untwisting airflow
supplying mechanism 41 in the untwisting operation. The Z
untwisting valve 414 opens/closes the Z untwisting flow path 412
15 in theuntwistin goperationbasedon the control signal. According
to such control, the untwisting airflow can be generated at the
position of untwisting the yarn ends YA, YB of the yarn Y of Z twist
in the untwisting operation at the first untwisting nozzle 71 and
the second untwisting nozzle 72.
20 The unit control section 36 transmits a control signal for
continuously closing the valve in the twisting operation with
respect tothe Stwistingvalve 423 ofthe twistingairflow supplying
mechanism 42. The S twisting valve 423 continuously closes the S
t w i s t i n g f l o w p a t h 4 2 1 i n t h e t w i s t i n g o p e r a t i o n b a s e d o n t h e c o n t r o l
25 signal. A control signal for opening/closing the valve is
transmittedwith respect tothe Z twisting valve 424 ofthe twisting
airflow supplying mechanism 42 in the twisting operation. The Z
twisting valve 424 opens/closes the Z twisting flow path 422 in
the twisting operation based on the control signal.
30 According to such control, the twisting airflow in the
whirling direction for twisting the yarn ends YA, YB of the yarn
Y of Z twist can be generated in the twisting operation at the
twisting nozzle 73.
The yarn splicing device 21, the yarn winding unit 11, and
* the automatic winder according to the present example described
above have the following effects.
Accordingtotheyarnsplicingdevice 21, the twistingairflow
for twisting the yarn ends YA, YB can be generated in the whirling
5 direction in accordance with the twistking condition of the yarn
Y to be performed with the yarn splicing operation by the control
on the twisting airflow supplying mechanism 42. Thus, even if the
type of yarn Y is changed, the whirling direction of the twisting
airflow to be generated at the twisting nozzle 73 can be selected
10 and changed without replacing the component of the yarn splicing
device 21.
According to the yarn splicing device 21, the plurality of
twisting injectionholes 54 arearranged, andtheopen/closecontrol
is performed on the S twisting valve 423 and the Z twisting valve
15 424 to generate the twisting airflow for twisting the yarn ends
YA, YB in the whirling direction in accordance with the twisting
condition of the yarn Y to be performed with the yarn splicing
operation. Thus, a simple configuration is obtained rather than
a complex configuration of moving or opening/closingthe injection
20 hole itself.
A c c o r d i n g t o t h e y a r n s p l i c i n g s y s t e m 1 0 0 , the setting section
38 for setting the set twisting condition, and the unit control
section 36 for performing the open/close control on the S twisting
valve 423 and the Z twisting valve 424 based on the setting are
25 provided. The twisting airflow for twisting the yarn ends YA, YB
thus can be easily changed according to the setting. Thus, even
if the type of yarn Y is changed, the whirling direction of the
twisting airflow can be changed without performing a complicating
operation or replacing the component of the yarn splicing device
30 21.
According to the yarn splicing system 100, the S twisting
injection hole 541 and the Z twisting injection hole 542 for
generating the twisting airflow for twisting the yarn ends YA, YB
in different whirling directions when the type of yarn Y is changed
e arerespectivelyprovidedinthe first air chamber 531andthesecond
air chamber 532. Thus, when the twisting direction of the yarn Y
is changed, the direction of the twisting airflow for twisting the
yarn ends YA, YB can be easily changed, and measures can be taken
5 for the yarn Y of S twist and the yarn Y of Z twist without replacing
the component.
According to the yarn splicing system 100, the untwisting
airflow for untwisting the yarn ends YA, YB can be generated at
the position in accordance with the untwisting condition of the
10 yarn Y to be performed with the yarn splici.ng operation by the
control on the untwisting airflow supplying mechanism 41. Thus,
when the twisting direction ofthe yarnYis changed, the generating
position of not only the twisting airflow for twisting the yarn
ends YA, YB, but also the untwisting airflow for untwisting the
15 yarn ends YA, YB can be easily changed, and measures can be taken
for the yarn Y of S twist and the yarn Y of Z twist without replacing ..
the component.
According to the automatic winder, the main control section
37 includes a touch panel serving as the operation input unit that
20 can be operated by the operator. Thus, the whirling direction of
the twisting airflow and the generating position ofthe untwisting
airflow can be collectively changed for the plurality of yarn
winding units 11, which reduces the number of operations performed
by the operator.
25 [Second Example]
A yarn splicing system 100 applied with the yarn splicing
device 21 according to a second example of the present invention,
and an automatic winder serving as a textile machine equipped with
the yarn splicing system 100 will be described using FIG. 7 to FIG.
30 10. The present example greatly differs from the first example in
that in the first example, the generatingpositionofthe untwisting
airflow generated at the first untwisting nozzle 71 and the second
untwisting nozzle 72, and the whirling direction of the twisting
airflowgeneratedatthetwistingnozzle 73 are selectedandchanged,
e whereas in the present example, the generating region of the
twisting airflow generated at the twisting nozzle 73 is selected
andchanged. The descriptiononthe configurations commonwith the
first example will be omitted. In the following description, the
5 yarn splicing device 21 dedicated to the yarn Y of Z twist will
be described, but may be dedicated to the yarn Y of S twist or may
be the yarn splicing device 21 that can be used to the yarn Y of
both S twist 'and Z twist.
First, the first untwisting nozzle 71, the second untwisting
10 nozzle 72, and the twisting nozzle 73 of the yarn splicing device
21 of the present example will be described in detail.
As illustrated in FIG. 7, the first untwisting nozzle 71 is
configured to generate the untwisting airflow for untwisting the
yarn end YA of the yarn Y of Z twist. The first untwisting nozzle
15 71 is formed with the first untwisting injection hole 713 as an
injection hole of the compressed air.
The seconduntwisting nozzle 72 is configuredto generate the
untwisting airflow for untwisting the yarn end YB of the yarn Y
of Z twist. The second untwisting nozzle 72 is formed with the
20 second untwisting injection hole 723 as an injection hole of the
compressed air.
As illustrated in FIG. 7 to FIG. 10, the twisting nozzle 73
of the present example is configured so that the twisting airflow
for twisting the yarn ends YA, YB can be generated in different
25 generating regions. The twisting nozzle 73 includes the air
chamber 53 and the plurality of twisting injection holes 54.
As illustrated in FIG. 8, the air chamber 53 is configured
by the first air chamber 531 and the second air chamber 532. The
air chamber 53 ofthe present example is arranged sothat the center
30 lines of the first air chamber 531 and the second air chamber 532
coincide with each other, as opposed to the first example.
The plurality of twisting injection holes 54 are injection
holesofthecompressedairformedontherespectivecircumferential
surfaces of the first air chamber 531 and the second air chamber
0
532. The twisting injection hole 54 includes a main twisting
injection hole 543 and a sub-twisting injection hole 544. The main
twisting injection hole 543 and the sub-twisting injection hole
544 are arranged in accordance with the generating region to
5 generate the twisting airflow for twisting the yarn ends YA, YB
in different generating regions. Themain twisting injection hole
543 is an injection hole for generating the twisting airflow for
twisting the yarn ends YA, YB in the region (first region) closer
to the middle of the air chamber 53. The sub-twisting injection
10 hole 544 is an injection hole for generating the twisting airflow
for twisting the yarn ends YA, YB in the region (second region)
slightly away from the middle of the air chamber 53. The twisting
airflow for twisting the yarn ends YA, YB can be generated in the
entire region (third region) of the air chamber 53 by injecting
15 the compressed air from both the main twisting injection hole 543
and the sub-twisting injection hole 544.
The directions of the main twisting injection hole 543 and
the sub-twisting injection hole 544 are tangential directions of
thecircumferentialwallsofthe first air chamber 531andthe second
20 air chamber 532, and are formed in the directions of generating
the whirling flow for twisting the yarn ends YA, YB of Z twist.
The main twisting injection hole 543 and the sub-twisting injection
hole 544 are formed in one area each in the first air chamber 531
and the second air chamber 532. The main twisting injection hole
25 543 andthe sub-twisting injectionhole 544 ofthe first air chamber
531 and the second air chamber 532 are formed side by side in an
axial direction of the first air chamber 531 and the second air
chamber 532.
The twisting nozzle 73 is attached to the block 55 arranged
30 in the yarn splicing device 21. The block 55 is formed with a main
airflow path 553 and a sub-airflow path 554. The main airflow path
553 is a flow path for supplying the compressed air to the main
twisting injection hole 543. The sub-airflow path 554 is a flow
path for supplyingthe compressed air to the sub-twisting injection
hole 544. A space communicating from the main airflow path 553 to
the main twisting injection hole 543 is formed between the twisting
nozzle 73 and the block 55 (not illustrated). This space becomes
the airflow path fromthemain airflow path 553 tothemain twisting
injection hole 543, and supplies the compressed air to the main
twisting injection hole 543. A space communicating from the
sub-airflow path 554 to the sub-twisting injection hole 544 is also
formed between the twisting nozzle 73 and the block 55 (not
illustrated). This space becomes the airflow path from the
sub-airflow path 554 to the sub-twisting injection. hole 544, and
suppliesthe compressedair tothe sub-twisting injectionhole 544.
A main twisting flow path 425, to be described later, is connected
to the main airflow path 553, and a sub-twisting flow path 426,
to be described later, is connected to the sub-airflow path 554.
The yarn splicing system 100 including the yarn splicing
device 21 will now be described. The yarn splicing system 100 of
the present example is a system that can select and change the
generating region of the untwisting air flow for twisting without
performing a complicated operation or replacing the component of
the yarn splicing device. The yarn splicing system 100 is
configured by the yarn splicing device 21, the setting section 38
of the main control section 37, and the unit control section 36
of the yarn winding unit 11.
As illustrated in FIG. 7 and FIG. 8, the yarn splicing device
21 includes the untwisting airflow supplying mechanism 41 and the
twistingairflowsupplyingmechanism42 as amechanismfor supplying
the compressed air to the first untwisting nozzle 71, the second
untwisting nozzle 72, and the twisting nozzle 73.
The untwisting airflow supplying mechanism 41 supplies the
compressed air to the first untwisting nozzle 71 and the second
untwisting nozzle 72. The untwisting airflow supplying mechanism
41 includes an untwisting flow path 416 and an untwisting valve
418.
The untwisting flow path 416 is a flow path for supplying the
0 compressed air from the untwisting air piping 62 to the first
untwisting injection hole 713 and the second untwisting injection
hole 723. The untwisting valve 418 is connected to the middle of
the untwisting flow path 416. The untwisting valve 418 is an
5 electromagnetic valve for performing opening/closing of the
untwisting flow path 416 based on the control signal.
The twisting airflow supplying mechanism 42 supplies the
compressed air to the twisting nozzle 73 for each of the generating
regions of the twisting airflow. The twisting airflow supplying
10 mechanism 42 includes a main twisting flow path 425, a sub-twisting
flow path 426, a main twisting valve 427, and a sub-twisting valve
428.
The main twisting flow path 425 is a flow path for supplying
thecompressedair foreachofthegeneratingregionsofthetwisting
15 airflow, and a flow path for supplying the compressed air from the
twisting air piping 63 to the main twisting injection hole 543.
The main twisting valve 427 is connected to the middle of the main
twisting flow path 425. The main twisting valve 427 is an
electromagnetic valve for performing opening/closing of the main
20 twisting flow path 425 based on the control signal.
The sub-twisting flow path 426 is a flow path for supplying
thecompressedairforeachofthegeneratingregionsofthetwisting
airflow, and a flow path for supplying the compressed air from the
twisting air piping 63 tothe sub-twisting injection hole 544. The
25 sub-twisting valve 428 is connected to the middle of the
sub-twisting flow path 426. The sub-untwisting valve 428 is an
electromagnetic valve for performing opening/closing of the
sub-twisting flow path 426 based on the control signal.
In the setting section 38 of the main control section 37, the
30 o p e r a t i o n s e t t i n g o f t h e y a r n s p l i c i n g d e v i c e 2 1 o f e a c h y a r n w i n d i n g
unit 11 can be collectively performed (see FIG. 1). The operator
operates the touch panel of the setting section 38 to perform the
setting. Forthe operation setting ofthe yarn splicingdevice 21,
the generating region ofthe twisting airflow for twisting the yarn
e ends YA, YB in accordance with the twisting condition of the yarn
Y to be performed with the yarn splicing operation are set as a
set twisting condition. In the present example, the generating
region of the twisting airflow for twisting the yarn ends YA, YB
5 is determined and the set twisting condition is set by selecting
one of the first region to the third region with the touch panel
of the setting section 38 as the generating region of the twisting
a i r f l o w f o r t w i s t i n g t h e y a r n e n d s Y A , YBoftheyarnYtobeperformed
with the yarn splicing operation.
10 The main control section 37 transmits the set content set by
the setting section 38 to the unit control section 36 of each yarn
winding unit 11. The unit control section 36 controls the
untwisting airflow supplyingmechanism 41 and the twisting airflow
supplying mechanism 42 to drive the yarn splicing device 21 based
15 on the set twisting condition.
Specifically, the unit control section 36 also performs the
open/close control of the main twisting valve 427 and the
sub-twisting valve 428 of the twisting airflow supplyingmechanism
42 to generate the twisting airflow for twisting the yarn ends YA,
20 YB in the generating region in accordance with the twisting
condition of the yarn to be performed with the yarn splicing
operation.
The specific operation of the yarn splicing system 100 will
now be described.
25 First, with reference to FIG. 7 and FIG. 8, a case in which
the operator operates the touch panel of the setting section 38
to select the region (first region) closer to the middle of the
air chamber 53 as the region for generating the twisting airflow
for twisting the yarn ends YA, YB will be described. In this case,
30 the generating region ofthe twisting airflow for twisting the yarn
ends YA, YB is determined as the region (first region) closer to
the middle of the air chamber 53, which is set as the set twisting
condition. The unit control section 36 controls the twisting
airflow supplying mechanism 42 to drive the yarn splicing device
21 based on the set twisting condition.
Specifically, the unit control section 36 first transmits a
control signal for opening/closing the valve with respect to the
untwisting valve 418 ofthe untwisting airflow supplyingmechanism
41 to perform the untwisting operation of the yarn ends YA, YB.
The untwisting valve 418 opens/closes the untwisting flow path 416
in the untwisting operationbasedon the control signal. According
to such control, the untwisting airflow for untwisting the yarn
ends YA, Y B o f t h e y a r n Y c a n b e g e n e r a t e d i n t h e u n t w i s t i n g o p e r a t i o n
at the first untwisting nozzle 71 and the second untwisting nozzle
72.
The unit control section 36 transmits a control signal for
opening/closing the valve in the twisting operation to the main
twisting valve 427 of the twisting airflow supplying mechanism 42.
The main twisting valve 427 opens/closes the main twisting flow
path 425 in the twisting operation based on the control signal.
A control signal for continuously closing the valve is transmitted
to the sub-twisting valve 428 of the twisting airflow supplying
mechanism 42. The sub-twisting valve 428 continuously closes the
sub-twisting flow path 426 in the twisting operation based on the
control signal. According to such control, the twisting airflow
for twisting the yarn ends YA, YB can be generated in the region
(first region) closer to the middle of the air chamber 53 in the
twisting operation at the twisting nozzle 73.
Next, with reference to FIG. 7 and FIG. 9, a case in which
the operator operates the touch panel of the setting section 38
to select the region (second region) slightly away from the middle
of the air chamber 53 as the region for generating the twisting
airflow for twisting the yarn ends YA, YB will be described. In
this case, the generating region of the twisting airflow for
twisting the yarn ends YA, YB is determined as the region (second
region) slightly away from the middle of the air chamber 53, which
is set as the set twisting condition. The unit control section 36
controls the twisting airflow supplying mechanism 42 to drive the
0
yarn splicing device 21 based on the set twisting condition.
Specifically, the unit control section 36 first transmits a
control signal for opening/closing the valve with respect to the
untwisting valve 418 of the untwisting airflow supplying mechanism
5 41 to perform the untwisting operation of the yarn ends YA, YB.
The untwisting valve 418 opens/closes the untwisting flow path 416
in theuntwisting operationbasedon the control signal. According
to such control, the untwisting airflow for untwisting the yarn
endsYA, ~ B o f t h e y a r n Y c a n b e g e n e r a t e d i n t h e u n t w i s t i n g o p e r a t i o n
10 at the first untwisting nozzle 71 and the second untwisting nozzle
72.
The unit control section 36 transmits a control signal for
continuously closing the valve in the twisting operation to the
main twisting valve 427 ofthe twisting airflow supplyingmechanism
15 42. The main twisting valve 427 continuously closes the main
t w i s t i n g f l o w p a t h 4 2 5 i n t h e t w i s t i n g o p e r a t i o n b a s e d o n t h e c o n t r o l
signal. A control signal for opening/closing the valve is
transmitted to the sub-twisting valve 428 of the twisting airflow
supplyingmechanism42inthetwistingoperation. The sub-twisting
20 valve 428 opens/closes the sub-twisting flow path 426 in the
twisting operation based on the control signal. According to such
control, the twisting airflow for twisting the yarn ends YA, YB
can be generated in the region (second region) slightly away from
the middle of the air chamber 53 in the twisting operation at the
25 twisting nozzle 73.
Next, with reference to FIG. 7 and FIG. 10, a case in which
the operator operates the touch panel of the setting section 38
to select the entire region (third region) of the air chamber 53
as the region for generating the twisting airflow for twisting the
30 yarn ends YA, YB will be described. In this case, the generating
region of the twisting airflow for twisting the yarn ends YA, YB
is determinedas the entire region (third region) ofthe air chamber
53, which is set as the set twisting condition. The unit control
section 36 controls the twisting airflow supplying mechanism 42
a t o d r i v e t h e yarn s p l i c i n g device 21 based on t h e set t w i s t i n g
condition.
S p e c i f i c a l l y , t h e u n i t c o n t r o l s e c t i o n 36 f i r s t t r a n s m i t s a
c o n t r o l s i g n a l f o r opening/closing t h e v a l v e w i t h r e s p e c t t o t h e
5 u n t w i s t i n g v a l v e 418 o f t h e u n t w i s t i n g a i r f l o w supplyingmechanism
4 1 t o perform t h e untwisting o p e r a t i o n of t h e yarn ends YA, YB.
The u n t w i s t i n g v a l v e 418 opens/closes t h e u n t w i s t i n g flow path 416
i n t h e untwisting o p e r a t i o n b a s e d o n t h e c o n t r o l s i g n a l . According
t o such c o n t r o l , t h e u n t w i s t i n g a i r f l o w f o r u n t w i s t i n g t h e yarn
10 ends YA, Y B o f t h e y a r n Y c a n b e g e n e r a t e d i n t h e u n t w i s t i n g o p e r a t i o n
a t t h e f i r s t u n t w i s t i n g n o z z l e 7 1 and t h e second u n t w i s t i n g nozzle
72.
The u n i t c o n t r o l s e c t i o n 36 t r a n s m i t s a c o n t r o l s i g n a l f o r
opening/closing t h e valve a t t h e same timing i n t h e t w i s t i n g
15 o p e r a t i o n t o t h e main t w i s t i n g valve 427 and t h e sub-twisting valve
428 of t h e t w i s t i n g a i r f l o w supplying mechanism 42. The main
t w i s t i n g valve 427 and t h e s u b - t w i s t i n g v a l v e 428 open/close t h e
main t w i s t i n g flow path 425 and t h e sub-twisting flow path 426 a t
t h e sametiminginthetwistingoperationbasedonthecontrolsignal.
20 According t o such c o n t r o l , t h e t w i s t i n g a i r f l o w f o r t w i s t i n g t h e
yarnends YA, YBcanbe g e n e r a t e d i n t h e e n t i r e region ( t h i r d region)
of t h e a i r chamber 53 i n t h e t w i s t i n g o p e r a t i o n a t t h e t w i s t i n g
nozzle 73.
The yarn s p l i c i n g device 21, t h e yarn winding u n i t 11, and
25 t h e automatic winder according t o t h e present example described
above have t h e following e f f e c t s .
A c c o r d i n g t o t h e y a r n s p l i c i n g d e v i c e 2 1 , t h e t w i s t i n g a i r f l o w
f o r t w i s t i n g t h e yarn ends YA, YB can be generated i n t h e g e n e r a t i n g
region i n accordance with t h e t w i s t i n g c o n d i t i o n of t h e yarn Y t o
30 be performed with t h e yarn s p l i c i n g o p e r a t i o n by t h e c o n t r o l on
t h e t w i s t i n g a i r f l o w s u p p l y i n g m e c h a n i s m 4 2 . Thus, even i f t h e type
of yarn Y is changed, t h e g e n e r a t i n g region of t h e t w i s t i n g a i r f l o w
tobegeneratedatthetwistingnozzle 73 canbe s e l e c t e d a n d c h a n g e d
without r e p l a c i n g t h e component of t h e yarn s p l i c i n g device 21.
According t o the yarn s p l i c i n g device 21, the p l u r a l i t y of
t w i s t i n g i n j e c t i o n h o l e s 54 arearranged, a n d t h e o p e n / c l o s e c o n t r o l
is performed on the main twisting valve 427 and the sub-twisting
valve 428 t o generate the t w i s t i n g a i r f l o w f o r twisting the yarn
5 ends YA, YBinthe generating region i n accordance with t h e twisting
condition of the yarn Y t o be performed with the yarn s p l i c i n g
operation. Thus, a simple configuration is obtained r a t h e r than
a complex configuration of moving or opening/closingthe i n j e c t i o n
hole i t s e l f .
10 A c c o r d i n g t o t h e y a r n s p l i c i n g s y s t e m 1 0 0 , the s e t t i n g section
38 for s e t t i n g the s e t twisting condition, and the u n i t control
section 36 f o r performing the open/close control on the main
twisting valve 427 and the sub-twisting valve 428 based on the
s e t t i n g a r e provided. The t w i s t i n g a i r f l o w f o r t w i s t i n g the yarn
15 ends YA, YB thus can be e a s i l y changed according t o t h e s e t t i n g .
Thus, even i f the type of yarn Y is changed, the generating segion
of the t w i s t i n g a i r f l o w can be changed without performing a
complicating operation or replacing the component of the yarn
s p l i c i n g device 21.
20 According t o the yarn s p l i c i n g system 100, the main twisting
i n j e c t i o n hole 543 and the sub-twisting i n j e c t i o n hole 544, which
generate the t w i s t i n g a i r f l o w f o r t w i s t i n g the yarn ends YA, YB
in d i f f e r e n t generating regions when the type of yarn Y is changed,
are arranged i n the f i r s t a i r chamber and the second a i r chamber,
25 respectively. Thus, even i f the type of yarn Y is changed, the
g e n e r a t i n g r e g i o n o f t h e t w i s t i n g a i r f l o w canbe s e l e c t e d a n d e a s i l y
changedinaccordancewith t h e p r o p e r t y o f t h e yarnYtobeperformed
with the yarn s p l i c i n g operation, whereby s a t i s f a c t o r y t w i s t i n g
performance can be obtained.
30 According t o the automatic winder, the main c o n t r o l s e c t i o n
37 includes a touch panel serving as the operation input u n i t t h a t
can be operated by the operator. Thus, the generating region of
the twisting airflow can be c o l l e c t i v e l y changed f o r t h e p l u r a l i t y
of yarn winding u n i t s 11, which reduces the number of operations
e performed by the operator.
The embodiments of the present invention have been described
above, but the present invention is not limited to the embodiments
described above, and various modifications can be made.
5 For example, in the first example, the position of the
untwisting airflow generated at the first untwisting nozzle 71 and
the second untwisting nozzle 72, and the whirling direction of the
twistingairflowgeneratedatthetwistingnozzle 73 canbe selected
and changed, and in the second example, the generating region of
10 the untwisting airflow generated at the twisting nozzle 73 can be
selectedandchanged, butthesearenottheonlycases. For example,
the position of the untwisting airflow generated at the first
untwisting nozzle 71 and the second untwisting nozzle 72, and the
whirlingdirectionandthe generating regionofthe twisting airflow
15 generated at the twisting nozzle 73 may be selected and changed.
Inthe first example, thecenter lines ofthe first air chamber
531 and the second air chamber 532 are off set, but the center lines
of the first air chamber 531 and the second air chamber 532 may
be coincided with each other as in the second example. On the
20 contrary, the center lines of the first air chamber 531 and the
second air chamber 532 of the second example may be offset.
In the first example, the S twisting injection hole 541 and
the Z twisting injection hole 542 are formed in one area each in
the first air chamber 531 and the second air chamber 532,
25 respectively, but the S twisting injection hole 541 and the Z
twisting injection hole 542 may be formed in one area each in the
air chamber 53 with the center lines of the first air chamber 531
and the second air chamber 532 coincided with each other.
In the second example, the main twisting injection hole 543
30 and the sub-twisting injection hole 544 are formed in one area each
in the first air chamber 531 and the second air chamber 532,
respectively, but the main twisting injection hole 543 and the
sub-twisting injection hole 544 may be formed in one area each in
the air chamber 53.
In the first example, the S airflow path 551 and the Z airflow
path 552 are formed in the block 55, as illustrated in FIG. 5 and
FIG. 6, with the S twisting flow path 421 connected to the S airflow
path 551 and the Z twisting flow path 422 connected to the Z airflow
5 path 552, but the S twisting flow path 421 and the Z twisting flow
path 422 may be arranged in the block 55, as illustrated in FIG.
11A. In the second example, the main airflow path 553 and the
sub-airflow path 554 are formed in the block 55, as illustrated
in FIG. 8, FIG. 9, and FIG. 10, with the main twisting flow path
10 425 connected to the main airflow path 553 and the sub-twisting
flow path 426 connected to the sub-airflow path 554, but the main
twisting flow path 425 and the sub-twisting flow path 426 may be
arranged in the block 55, as illustrated in FIG. 11B.
In the first example, the untwisting airflow supplying
15 mechanism 41 is configured to include the S untwisting flow path
411, the Z untwisting flow path 412, the S untwisting valve 413,
and the Z untwisting valve 414 on the downstream of the branched
point 430, but is not limited to such configuration. For example,
a branching valve maybe arranged, a pre-branching electromagnetic
20 valve for switching the conduction of the untwisting air may be
arrangedontheupstreamofthebranchingvalve, andthe Suntwisting
flow path 411 and the Z untwisting flow path 412 may be arranged
on the downstream branched by the branching valve. According to
such configuration, the S untwisting valve 413 and the Z untwisting
25 valve 414 of the first example can be intensively arranged in the
single pre-branching electromagnetic valve. The branching valve
described above may have a structure capable of being switched by
electric control, or may adopt a mechanical switching mechanism
of beingmanually switchedbythe operator. Abranching conduction
30 switching valve in which the branching valve and the pre-branching
electromagnetic valve are integrally configured may be adopted.
In the first example, the twisting airflow supplying
mechanism 42 is configured to include the S twisting flow path 421,
the Z twisting flow path 422, the S twisting valve 423, and the
Z twisting valve 424 on the downstream of the branched point 431,
but is not limited to such configuration. For example, a branching
valve may be arranged, a pre-branching electromagnetic valve for
switching the conduction of the twisting air may be arranged on
the upstream of the branching valve, and the S twisting flow path
421andthe Ztwisting flowpath422maybearrangedonthedownstream
branched by the branching valve. According to such configuration,
the S twisting valve 423 and the Z twisting valve 424 of the first
example can be intensively arranged in the single pre-branching
electromagnetic valve. The branching valve described above may
have a structure capable of being switched by electric control,
or may adopt a mechanical switching mechanism of being manually
switched by the operator. A branching conduction switching valve
in which the branching valve and the pre-branching electromagnetic
valve are integrally configured may be adopted. Since the
branching conduction switching valve can also be switched by an
electric control, the generating region of the twisting airflow
canbe collectivelychanged, which reducesthe number of operations
performed by the operator.
The yarn splicing device of the present invention relates to
the yarn splicing device of a first invention, wherein the twisting
nozzle includes a plurality of twisting injection holes
corresponding to the whirling direction and/or the generating
region to generate the twisting airflow for twisting the yarn ends
in different whirling directions and/or different generating
regions. The twisting airflow supplying mechanism includes a
twisting flow path adapted to supply the compressed air for each
of the whirling directions of the twisting airflow and/or for each
of the generating regions of the twisting airflow to generate the
twisting airflowwith respecttothepluralityoftwistinginjection
holes, and a twisting valve adapted to open/close the twisting flow
path for each of the whirling directions of the twisting airflow
and/or for each of the generating regions of the twisting airflow.
The twisting airflow for twisting the yarn ends is generated in
a the whirling direction and/or the generating region in accordance
with the twisting condition of the yarn to be performed with the
yarn splicing operation by performing an open/close control on the
twisting valve.
5 A yarn splicing system of the present invention includes the
yarn splicing device of the first invention, a setting section,
and a control section. The setting section is adapted to set a
whirling direction of a twisting airflow for twisting yarn ends
and/or a generating region of the twisting airflow in accordance
10 with a twisting condition of the yarn to be performed with a yarn
splicing operation as a set twisting condition. The control
section is adapted to perform a control on the twisting airflow
supplying mechanism based on the set twisting condition set by the
setting section.
A yarn splicing system of the present invention includes the
yarn splicing device of the second invention, a setting section,
and a control section. The setting section is adapted to set a
whirling direction of a twisting airflow for twisting yarn ends
and/or a generating region of the twisting airflow in accordance
20 with a twisting condition of the yarn to be performed with a yarn
splicing operation as a set twisting condition. The control
section is adaptedto performan open/close control on the twisting
valvebasedon the set twisting condition set by the setting section.
The yarn splicing system of the present invention relates to
25 the yarnsplicing systemofa fourth invention, whereinthe twisting
nozzle includes an air chamber in which the plurality of twisting
injection holes are formed on a circumferential surface. The
plurality of twisting injection holes include a main twisting
injectionholeanda s u b - t w i s t i n g i n j e c t i o n h o l e a d a p t e d t o g e n e r a t e
30 the twisting airflow for twisting the yarn ends in different
generating regions.
The yarn splicing system of the present invention relates to
the yarn splicing system of a fifth invention, wherein the air
chamber of the twisting nozzle is arranged with the yarn ends of
a? two yarns to be performed with the yarn splicing operation
overlapped from different directions, and is configured by a first
air chamber adapted to whirl a yarn end of at least one yarn, and
a second air chamber adapted to whirl a yarn end of at least the
5 other yarn. The first air chamber and the second air chamber
respectively have the main twisting injection hole and the
sub-twisting injection hole formed side by side in an axial
direction of the air chamber.
The yarn splicing system of the present invention relates to
10 the yarn splicingsystemofa fourth invention, whereinthe twisting
nozzle includes an air chamber in which the plurality of twisting
injection holes are formed on a circumferential surface. The
plurality of twisting injection holes include an S twisting
injection hole adaptedto generate atwisting airflow for twisting
15 the yarn ends of a yarn of S twist and a Z twisting injection hole
adapted to generate a twisting airflow for twisting the yarn ends
of a yarn of Z twist.
The yarn splicing system of the present invention relates to
the yarn splicing system of a seventh invention, wherein the air
20 chamber of the twisting nozzle is arranged with the yarn ends of
two yarns to be performed with the yarn splicing operation
overlapped from different directions and is configured by a first
air chamber adapted to whirl a yarn end of at least one yarn, and
a second air chamber adapted to whirl a yarn end of at least the
25 other yarn. The first air chamber and the second air chamber
respectively have an S twisting injection hole and a Z twisting
injection hole formed side by side on the same circumference.
The yarn splicing system of the present invention relates to
the yarn splicing systemaccording to any one ofthe third to eighth
30 inventions, wherein the yarnsplicingdeviceincludes anuntwisting
nozzle and an untwisting airflow supplying mechanism. The
untwisting nozzle is adapted to generate untwisting airflow for
untwisting each yarn end at different positions to prepare for the
twisting of the yarn ends by the twisting nozzle. The untwisting
e airflow supplying mechanism is c o n f i g u r e d t o supply compressed a i r
t o t h e untwisting nozzle and t o switch a g e n e r a t i n g p o s i t i o n of
t h e untwisting a i r f l o w . The u n t w i s t i n g a i r f l o w f o r u n t w i s t i n g t h e
yarn ends is generated a t a p o s i t i o n i n accordance with u n t w i s t i n g
5 condition of t h e yarn t o be performed with t h e yarn s p l i c i n g
operation by a c o n t r o l on t h e untwisting a i r f l o w supplying
mechanism.
A t e x t i l e machine of t h e p r e s e n t i n v e n t i o n i n c l u d e s t h e yarn
s p l i c i n g s y s t e m a c c o r d i n g t o a n y o n e o f t h e t h i r d t o n i n t h i n v e n t i o n s ,
10 a p l u r a l i t y o f yarn winding devices, and a main c o n t r o l s e c t i o n
a d a p t e d t o c o n t r o l t h e p l u r a l i t y o f y a r n w i n d i n g d e v i c e s . The yarn
s p l i c i n g device and t h e c o n t r o l s e c t i o n a r e i n s t a l l e d i n t h e yarn
winding device. The main c o n t r o l s e c t i o n includes t h e s e t t i n g
s e c t i o n . The s e t t i n g s e c t i o n includes an o p e r a t i o n i n p u t u n i t
15 operable by an o p e r a t o r .
The e f f e c t s of t h e p r e s e n t i n v e n t i o n i n c l u d e t h e following.
A c c o r d i n g t o t h e yarnsplicingdeviceofthepresentinvention,
t h e t w i s t i n g a i r f l o w f o r t w i s t i n g t h e yarn ends can be generated
i n t h e w h i r l i n g d i r e c t i o n a n d / o r t h e g e n e r a t i n g r e g i o n i n a c c o r d a n c e
20 with t h e t w i s t i n g c o n d i t i o n of t h e yarn t o be performed with t h e
yarn s p l i c i n g o p e r a t i o n by a c o n t r o l on t h e t w i s t i n g a i r f l o w
supplying mechanism. Thus, even i f t h e type of yarn is changed,
t h e whirling d i r e c t i o n and t h e g e n e r a t i n g r e g i o n o f t h e t w i s t i n g
a i r f l o w t o be generated a t t h e t w i s t i n g nozzle can be s e l e c t e d and
25 changedwithoutreplacingthecomponentoftheyarnsplicingdevice.
Accordingtotheyarnsplicingdeviceofthepresentinvention,
a p l u r a l i t y of t w i s t i n g i n j e c t i o n holes a r e arranged, and t h e
t w i s t i n g a i r f l o w f o r t w i s t i n g t h e yarn ends is generated i n t h e
whirling d i r e c t i o n a n d / o r t h e g e n e r a t i n g region i n accordance with
30 t h e t w i s t i n g c o n d i t i o n of t h e yarn t o be performed with t h e yarn
s p l i c i n g o p e r a t i o n by performing an open/close c o n t r o l on t h e
t w i s t i n g valve. Thus, a simple c o n f i g u r a t i o n is obtained r a t h e r
t h a n a complex c o n f i g u r a t i o n of moving o r opening/closing t h e
i n j e c t i o n hole i t s e l f .
According t o t h e yarn s p l i c i n g s y s t e m o f t h e p r e s e n t invention,
the s e t t i n g section f o r s e t t i n g the s e t twisting condition, and
the control section f o r performing the control on the twisting
airflowsupplyingmechanismbasedonthe s e t t i n g a r e p r o v i d e d . The
5 t w i s t i n g a i r f l o w for twisting the yarn ends thus can be e a s i l y
changed according t o t h e s e t t i n g . Thus, even i f the type of yarn
is changed, the whirling d i r e c t i o n of the t w i s t i n g a i r f l o w and the
generating region of the t w i s t i n g a i r f l o w can be s e l e c t e d and
changed without performing a complicating operation or replacing
10 the component of the yarn s p l i c i n g device.
Accordingtothe yarn splicingsystemofthepresentinvention,
the s e t t i n g section f o r s e t t i n g the s e t twisting condition, and
t h e c o n t r o l s e c t i o n f o r performing the open/close c o n t r o l on the
twisting valve based on the s e t t i n g a r e provided. The t w i s t i n g
15 airflow for twisting the yarn ends thus can be e a s i l y changed
according t o t h e s e t t i n g . Thus, even i f the type of yarn is changed,
the whirling d i r e c t i o n of the t w i s t i n g a i r f l o w and the generating
region of the t w i s t i n g a i r f l o w can be changed without performing
a complicating operation or replacing the component of the yarn
20 s p l i c i n g device.
Accordingtotheyarnsplicingsystemofthepresentinvention,
the main twisting i n j e c t i o n hole and the sub-twisting i n j e c t i o n
hole adapted t o generate the t w i s t i n g a i r f l o w f o r t w i s t i n g the yarn
ends a t d i f f e r e n t generating regionswhenthetypeofyarnis changed
25 are provided. Thus, even i f the type of yarn is changed, the
generating r e g i o n o f t h e t w i s t i n g a i r f l o w canbe s e l e c t e d a n d e a s i l y
changed i n accordance with the property of the yarn t o be performed
with the yarn s p l i c i n g operation, whereby s a t i s f a c t o r y t w i s t i n g
performance can be obtained.
30 Accordingtothe yarn s p l i c i n g s y s t e m o f t h e p r e s e n t invention,
the main twisting i n j e c t i o n hole and the sub-twisting i n j e c t i o n '
hole adaptedto generate the t w i s t i n g a i r f l o w f o r t w i s t i n g the yarn
endsatdifferentgeneratingregionswhenthetypeofyarnischanged
are provided i n the f i r s t a i r chamber and the second a i r chamber,
respectively. Thus, even if the type of yarn is changed, the
generating regionofthe twisting airflow canbe selectedandeasily
changed in accordance with the property of the yarn to be performed
with the yarn splicing operation, whereby satisfactory twisting
5 performance can be obtained.
Accordingtotheyarnsplicingsystemofthepresentinvention,
the S twisting injection hole and the Z twisting injection hole
adaptedto generate the twisting airflow for twisting the yarn ends
in different whirling directions when the type of yarn is changed
10 are provided. Thus, when the twisting direction of the yarn is
changed, the direction of the twisting airflow for twisting the
yarn ends can be easily changed, and measures can be taken for the
yarn of S twist and the yarn of Z twist without replacing the
component.
15 Accordingtotheyarnsplicingsystemofthepresentinvention,
the S twisting injection hole and the Z twisting injection hole
adapted to generate the twisting airflow for twisting the yarn ends
in different whirling directions when the type of yarn is changed
are provided in the first air chamber and the second air chamber,
20 respectively. Thus, when the twisting direction of the yarn is
changed, the direction of the twisting airflow for twisting the
yarn ends can be easily changed, and measures can be taken for the
yarn of S twist and the yarn of Z twist without replacing the
component.
25 Accordingtotheyarnsplicingsystemofthepresentinvention,
the untwisting airflow for untwisting the yarn ends is generated
at a position in accordance with untwisting condition of the yarn
to be performed with the yarn splicing operation by a control on
the untwisting airflow supplying mechanism. Thus, when the
30 twisting direction of the yarn is changed, not only the whirling
direction and the generating region of the twisting airflow for
twisting the yarn ends, but also the generating position of the
untwisting airflow for untwisting the yarn ends can be easily
changed, and measures can be taken for the yarn Y of S twist and
4 the yarn Y of Z twist without replacing the component.
According to the textile machine of the present invention,
the main control section includes the operation input unit that
can be operated by the operator. Thus, the whirling direction and
5 the generating region of the twisting airflow and the generating
position ofthe untwisting airflow can be collectively changed for
the plurality of yarn winding units, which reduces the number of
operations performed by the operator.

0 WE CLAIM
1. A yarn splicing device adapted to perform a yarn splicing
operation of yarn ends, characterized in that the yarn splicing
device comprises:
5 a twisting nozzle configured to twist the yarn ends; and
a twisting airflow supplying mechanism configured to supply
compressed air to generate a twisting airflow with respect to the
twisting nozzle and to switch a whirling direction of the twisting
airflow and/or switch a generating region ofthe twisting airflow;
10 wherein
the twisting airflow supplyingmechanismis configuredto be
controlled such that the twisting airflow for twisting the yarn
ends is generated in the whirling direction and/or the generating
region in accordance with a twisting condition of the yarn to be
15 performed with the yarn splicing operation.
2. The yarn splicing device according to claim 1,
characterized in that the twisting nozzle includes a plurality of
twisting injection holes in accordance with the whirling direction
20 and/or the generating region to generate the twisting airflow for
twisting the yarn ends in different whirling directions and/or
different generating regions;
the twisting airflow supplying mechanism includes:
a twisting flow path adapted to supply the compressed air for
25 each of the whirling directions of the twisting airflow and/or for
each of the generating regions of the twisting airflow to generate
the twisting airflow with respect to the plurality of twisting
injection holes ; and
atwisting valve adaptedto open/close the twisting flow path
30 for each of the whirling directions of the twisting airflow and/or
for each of the generating regions of the twisting airflow; and
the twisting valve is configured to be controlled such that
the twisting airflow for twisting the yarn ends is generated for
each of the whirling directions and/or for each of the generating
e regions in accordance with the twisting condition of the yarn to
be performed with the yarn splicing operation.
3. A yarn splicing system comprising:
the yarn splicing device according to claim 1;
a setting section adapted to set a whirling direction of a
twisting airflow for twisting yarn ends and/or a generating region
of the twisting airflow in accordance with a twisting condition
of the yarn to be performed with a yarn splicing operation as a
10 set twisting condition; and
a controlsectionadaptedtoperforma control on the twisting
airflow supplying mechanism based on the set twisting condition
set by the setting section.
4. A yarn splicing system comprising:
the yarn splicing device according to claim 2;
a setting section adapted to set a whirling direction of a
twisting airflow for twisting yarn ends and/or a generating region
of the twisting airflow in accordance with a twisting condition
20 of the yarn to be performed with a yarn splicing operation as a
set twisting condition; and
a control section adapted to perform an open/close control
on the twisting valve based on the set twisting condition set by
the setting section.
25
5. The yarn splicing system according to claim 4,
characterized in that
the twisting nozzle includes:
an air chamber in which the plurality of twisting injection
30 holes are formed on a circumferential surface; and
the plurality of twisting injection holes include a main
twisting injection hole and a sub-twisting injection hole adapted
to generate the twisting airflow for twisting the yarn ends in
different generating regions.
6. The yarn splicing system according to claim 5,
characterized in that
the air chamber of the twisting nozzle comprises a first air
chamber adapted to whirl a yarn end of at least one yarn and a second
5 air chamber adapted to whirl a yarn end of at least the other yarn,
the center lines ofthe first air chamber and the secondair chamber
being offset; and
the first air chamber and the second air chamber respectively
have themain twisting injectionhole and the sub-twisting injection
10 hole formed side by side in an axial direction of the air chamber.
7. The yarn splicing system according to claim 4,
characterized in that the twisting nozzle includes an air chamber
in which the plurality of twisting injection holes are formed on
a circumferential surface; and
the plurality of twisting injection holes include an S
twisting injection hole adapted to generate a twisting airflow for
twisting the yarnends ofa yarnofstwistanda Ztwistinginjection
hole adapted to generate a twisting airflow for twisting the yarn
ends of a yarn of Z twist.
8. The yarn splicing system according to claim 7,
characterized in that the air chamber of the twisting nozzle
comprises a first air chamber adapted to whirl a yarn end of at
25 least one yarn and a second air chamber adapted to whirl a yarn
end of at least the other yarn, the center lines of the first air
chamber and the second air chamber being offset; and
the first air chamber and the second air chamber respectively
have an S twisting injection hole and a Z twisting injection hole
30 formed side by side on the same circumference.
9. The yarn splicing system according to any one of claims
3 to 8, characterized in that
the yarn splicing device includes:
an untwisting nozzle adapted to generate untwisting airflow
for untwisting each yarn end at different positions to prepare for
the twisting of the yarn ends by the twisting nozzle; and
an untwisting airflow supplying mechanism configured to
5 supply compressed air to the untwisting nozzle and to switch a
generating position of the untwisting airflow; and
the untwisting airflow for untwisting the yarn ends is
generated at a position in accordance with untwisting condition
of the yarn to be performed with the yarn splicing operation by
10 a control on the untwisting airflow supplying mechanism.
10. A textile machine comprising:
the yarn splicing system according to any one of claims 3 to
9;
a plurality of yarn winding devices; and
a main control section adapted to control the plurality of
yarn winding devices; characterized in that
t h e y a r n s p l i c i n g d e v i c e a n d t h e c o n t r o l s e c t i o n a r e i n s t a l l e d
in the yarn winding device;
20 the main control section includes:
the setting section; and
the setting section includes an operation input unit operable
by an operator.
25 11. A yarn splicing device, substantially as herein described
with reference to accompanying drawings and examples.