YARN WINDING MACHINE AND YARN WINDING METHOD
BACKGROUND OF THE INVENTION
1. F i e l d of t h e Invention
5 The p r e s e n t i n v e n t i o n r e l a t e s t o a yarn winding
machine adapted t o wind a y a r n around a package and a y a r n
winding method.
2. D e s c r i p t i o n of t h e Related A r t
10 As a c o n v e n t i o n a l yarn winding machine, t h e r e is
known a yarnwindingmachineprovidedwith a t r a v e r s e guide
adapted t o t r a v e r s e a y a r n t o be wound around a package
w i t h i n a t r a v e r s e width according t o t h e package. In such
a y a r n winding machine, f o r example, i n a case where a y a r n
15 d e f e c t is d e t e c t e d and t h e yarn i s c u t , o r i n some o t h e r
c a s e s , t h e y a r n f r o m t h e p a c k a g e i s c a u g h t b y a y a r n c a t c h i n g
and g u i d i n g d e v i c e , and t h e caught yarn is guided t o a y a r n
j o i n i n g d e v i c e . A t t h i s t i m e , so a s not t o d i s t u r b t h e yarn
c a t c h i n g and guiding o p e r a t i o n performed by t h e yarn
20 c a t c h i n g and g u i d i n g d e v i c e and t h e yarn j o i n i n g o p e r a t i o n
b y t h e yarn j o i n i n g d e v i c e , t h e t r a v e r s e g u i d e is c o n t r o l l e d
t o be under standby a t a p r e s c r i b e d standby p o s i t i o n .
In a y a r n winding machine d e s c r i b e d i n Japanese
P a t e n t A p p l i c a t i o n Laid-openNo. 2007-153554, t h e t r a v e r s e
25 guide i s c o n t r o l l e d t o be under standby a t an end p o s i t i o n
of t h e t r a v e r s e width o r t h e l i k e a s a s t a n d b y p o s i t i o n ,
and when a p r e s c r i b e d c o n d i t i o n such a s completion of t h e
yarn j o i n i n g o p e r a t i o n i s s a t i s f i e d , t h e t r a v e r s e guide is
moved from t h e standby p o s i t i o n t o a c e n t e r p o s i t i o n of t h e
30 t r a v e r s e width, and t h e t r a v e r s e o p e r a t i o n of t h e t r a v e r s e
guide i s resumed with t h e c e n t e r p o s i t i o n a s a c o n t r o l
o r i g i n .
SUMMARY OF THE INVENTION
In a c a s e where t h e t r a v e r s e guide is c o n t r o l l e d t o
5 be under standby a t t h e end p o s i t i o n of t h e t r a v e r s e width
a s t h e standby p o s i t i o n , occurrence of a s t i t c h i n g (a
phenomenon i n which t h e yarn i s wound o u t s i d e o f a n end
s u r f a c e of t h e package) is prevented. The s t i t c h i n g is
c a u s e d b y t h e y a r n e n t e r i n g a regionbetween t h e end s u r f a c e
10 of t h e package and t h e t r a v e r s e guide when t h e t r a v e r s e
o p e r a t i o n is resumed. However, f o r example, i f a width of
a y a r n suctionmouth o f t h e yarn catchingandguidingdevice
i s g r e a t e r t h a n t h e t r a v e r s e width, t h e s t i t c h i n g m a y o c c u r
s i n c e t h e yarn may be guided t o a region o u t s i d e of t h e
15 t r a v e r s e g u i d e .
An o b j e c t o f t h e p r e s e n t i n v e n t i o n is t h u s t o provide
a yarnwindingmachine a n d a y a r n w i n d i n g m e t h o d t h a t enable
p r e v e n t i o n of occurrence of a d e f e c t such a s t h e s t i t c h i n g
o r t h e l i k e .
20 A yarn winding machine comprises a t r a v e r s e guide
adapted t o perform a t r a v e r s e o p e r a t i o n t o t r a v e r s e a y a r n
t o be wound around a package w i t h i n a t r a v e r s e width
a c c o r d i n g t o t h e p a c k a g e ; ayarncatchingandguidingdevice
adapted t o p e r f o r m a y a r n c a t c h i n g and guiding o p e r a t i o n
25 t o c a t c h t h e yarn wound around t h e package and t o guide t h e
caught yarn t o a p r e s c r i b e d d e v i c e ; and a c o n t r o l s e c t i o n
adapted t o c o n t r o l t h e t r a v e r s e guide t o be under standby
w i t h i n a f i r s t standby r e g i o n during a f i r s t p e r i o d , t h e
f i r s t p e r i o d being a p e r i o d of t i m e when t h e t r a v e r s e
30 o p e r a t i o n i s under a s t o p and when t h e yarn c a t c h i n g and
guiding o p e r a t i o n is being performed, and t o c o n t r o l t h e
t r a v e r s e guide t o be under standby within a second standby
r e g i o n during a second period, t h e second standby region
being located f u r t h e r inward than t h e f i r s t standby region
with r e s p e c t t o t h e t r a v e r s e width, and t h e second period
5 being a period of time a f t e r an e l a p s e of t h e f i r s t period
and before a s t a r t of t h e t r a v e r s e o p e r a t i o n .
A yarn winding machine comprises a t r a v e r s e guide
adapted t o perform a t r a v e r s e operation t o t r a v e r s e a yarn
t o be wound around a package within a t r a v e r s e width
10 a c c o r d i n g t o t h e p a c k a g e ; ayarncatchingandguidingdevice
adapted t o perform a yarn catching and guiding o p e r a t i o n
t o catch t h e yarn wound around t h e package and t o guide t h e
caught yarn t o a p r e s c r i b e d device; and a c o n t r o l s e c t i o n
adapted t o c o n t r o l t h e t r a v e r s e guide t o be under standby
15 within a f i r s t standby region l o c a t e d f u r t h e r outward than
an end p o s i t i o n of a winding width of t h e package and an
end p o s i t i o n of a yarn catching width of t h e yarn catching
and guiding d e v i c e , and t o c o n t r o l t h e t r a v e r s e guide t o
be under standby within a second standby region
20 c o r r e s p o n d i n g t o a n e n d p o s i t i o n o f anoutermost l a y e r range
of t h e package.
A yarn winding method performed i n a yarn winding
machine comprising a t r a v e r s e guide adapted t o perform a
t r a v e r s e o p e r a t i o n t o t r a v e r s e a yarn t o be wound around
25 a package within a t r a v e r s e width according t o t h e package,
and a yarn catching and guiding device adapted t o perform
a yarn catching and guiding o p e r a t i o n t o catch t h e yarn
wound around t h e package and t o guide t h e caught yarn t o
a p r e s c r i b e d device, t h e yarn winding method comprises a
30 f i r s t s t e p of c o n t r o l l i n g t h e t r a v e r s e guide t o be under
s t a n d b y w i t h i n a firststandbyregionduringa f i r s t period,
the first period being a period of time when the traverse
operation is under a stop and when the yarn catching and
guiding operation is being performed; and a second step of
controlling the traverse guide to be under standby within
5 a second standby region during a second period, the second
standby region being located further inward than the first
standby region with respect to the traverse width, and the
second period being a period of time after an elapse of the
first period and before a start of the traverse operation.
10 A yarn winding method performed in a yarn winding
machine comprising a traverse guide adapted to perform a
traverse operation to traverse a yarn to be wound around
a package within a traverse width according to the package,
and a yarn catching and guiding device adapted to perform
15 a yarn catching and guiding operation to catch the yarn
wound around the package and to guide the caught yarn to
a prescribed device, the yarn winding method comprises a
first step of controlling the traverse guide to be under
standby within a first standby region located further
20 outward than an end position of a winding width of the
package and an end position of a yarn catching width of the
yarn catching and guiding device; and a second step of
controlling the traverse guide to be under standby within
a second standby region corresponding to an end position
25 of an outermost layer range of the package.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front view of a yarn winding machine
according to one embodiment of the present invention;
30 FIG. 2 is a front view of a traverse device and its
periphery in the yarn winding machine of FIG. 1;
FIG. 3 is a side view of the traverse device and its
periphery in the yarn winding machine of FIG. 1;
FIG. 4 is a plan view of the traverse device and its
periphery in the yarn winding machine of FIG. 1;
5 FIG. 5 is a flowchart illustrating a yarn winding
method performed in the yarn winding machine of FIG. 1;
FIG. 6 is a flowchart illustrating the yarn winding
method performed in the yarn winding machine of FIG. 1;
FIG. 7 is a front view of the traverse device and its
10 periphery for describingthe yarn windingmethod performed
in the yarn winding machine of FIG. 1;
FIG. 8 is a front view of the traverse device and its
periphery for describingthe yarn winding method performed
in the yarn winding machine of FIG. 1; and
15 FIG. 9 is a front view of traverse device and its
periphery for describingthe yarn windingmethod performed
in the yarn winding machine of FIG. 1.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
20 Apreferred embodiment ofthe present invention will
be hereinafter described in detail with reference to the
accompanying drawings. The same reference numerals are
denoted on the same or corresponding portions throughout
the drawings, and redundant description will be omitted.
25 As illustrated in FIG. 1, a yarn winding machine 1
includes a winding device 10, a traverse device 20, a yarn
guiding section 30 and a yarn supplying section 40. While
traversing a yarn Y, which has been unwound from a yarn
supplying bobbin B1 held by the yarn supplying section 40,
30 in the traverse device 20 and the yarn guiding section 30,
the yarn winding machine 1 is adapted to form yarn layers
around a winding tube T held by the winding device 10 to
form a package P. A travelling direction of the yarn Y is
a direction in which the yarn Y is headed from the yarn
supplying bobbin B1 toward the package P. By arranging a
5 plurality of the yarn winding machines 1, an automatic
winder is formed. In the following description, the
winding tube T and the package P may be collectively
referred to as a winding bobbin B2. That is, the winding
bobbin B2 around which the yarn layers are not formed is
10 the winding tube T, and the winding bobbin B2 around which
the yarn layers are formed is the package P.
As illustratedin FIGS. 2, 3 and4, thewinding device
10 includes a cradle (holding section) 11 and a contact
roller 12, and is adapted to wind the yarn Y around the
15 package P. The cradle 11 is provided with bearings (not
illustrated), a winding-bobbin drive motor 13, a
winding-bobbin-rotational-speed sensor 14 and a
winding-bobbin-diameter sensor 15. By replacing the
bearings adaptedto rotatably holdboth ends ofthe winding
20 tube T, the cradle 11is capable of holding thewinding tube
T having a different length. The cradle 11 is swingable
with a swing shaft 16 as a center. When a diameter of the
winding bobbin B2 increases as the yarn Y is wound around
the windingbobbinB2, the cradle 11is swungwiththe swing
25 shaft 16 as the center. Consequently, adequate contact is
maintained between an outer peripheral surface of the
winding bobbin B2 and an outer peripheral surface of the
contact roller 12.
When the winding bobbin B2 is held by the bearings
30 of the cradle 11, a drive shaft of the winding-bobbin drive
motor 13 is coupled tothewinding bobbin B2 in a relatively
u n r o t a t a b l e manner (a so-called d i r e c t d r i v e method). In
t h i s manner, t h e winding-bobbin d r i v e motor 13 r o t a t e s t h e
winding bobbin B2 such t h a t t h e yarn Y is wound around t h e
winding bobbin B2. The contact r o l l e r 12 is provided
5 independently from t h e t r a v e r s e device 20. The contact
r o l l e r 12 is r o t a t e d accordingly i n contact with an o u t e r
p e r i p h e r a l surface of t h e package P. Consequently, t h e
yarn Y can be favorably wound around t h e package P.
The winding-bobbin-rotational-speed sensor 1 4 is
10 adaptedtodetectanumberofrotations ( a r o t a t i o n a l s p e e d )
of t h e winding bobbin B2. The winding-bobbin-diameter
sensor 15 i s adapted t o d e t e c t a diameter of t h e winding
bobbin B2. The winding-bobbin-diameter sensor 15 is
formed of a r o t a r y encoder, a r e s o l v e r , or t h e l i k e , and
15 d e t e c t s t h e diameter of t h e winding bobbin B2 by d e t e c t i n g
a swinging angle of t h e c r a d l e 11. Based on a t o t a l length
of t h e yarn Y wound around t h e winding bobbin B2 (or an
elapsed time from a s t a r t of winding of t h e yarn Y with
r e s p e c t t o t h e winding bobbin B Z ) , a winding speed of t h e
20 yarn Y, and a type (a t h i c k n e s s or t h e l i k e ) of t h e yarn
Y, t h e diameter of t h e winding bobbin B2 may be detected.
In a d d i t i o n , a winding angle may be c a l c u l a t e d based on a
t r a v e l l i n g speed of t h e yarn Y i n a yarn t r a v e l l i n g path
between t h e yarn supplyingbobbin Bland t h e contact r o l l e r
25 12, a n d a t r a v e r s e speed. Aperipheralspeedofthewinding
bobbin B2 may be then c a l c u l a t e d based on t h e t r a v e l l i n g
speed of t h e yarn Y and t h e c a l c u l a t e d winding angle.
Furthermore, t h e diameter of t h e winding bobbin B2 may be
c a l c u l a t e d based on t h e r o t a t i o n a l speed of the winding
30 bobbinB2 a n d t h e c a l c u l a t e d p e r i p h e r a l s p e e d o f t h e w i n d i n g
bobbin B2.
The traverse device 20 includes a traverse arm 21,
a traverse guide 22 and a traverse-guide drive motor 23,
and is provided in proximity to and upstream of the winding
bobbin B2 in the travelling direction of the yarn Y. The
5 traverse guide 22 is engaged with the yarn Y to be wound
around the package P, and is adapted to perform a traverse
operation to traverse the yarn Y within a traverse width
according to the package P. The traverse guide 22 is
provided at a tip end of the traverse arm 21 configured to
10 be swingable. The traverse-guide drive motor 23 is a
servomotor, for example, and is adapted to swing the
traverse arm 21 such that the traverse guide 22 is
reciprocated. A step motor or the like also may be used
as the traverse-guide drive motor 23.
15 The traverse guide 22 is a hook-shaped member having
an opening portion 22a. In the following description, a
direction in which the yarn Y is traversed by the traverse
guide 22 (in other words, a direction ofthe traverse width)
is referred to as a traverse direction. In the traverse
20 direction, a side where the opening portion 22a of the
traverse guide 22 is closed is referred to as a first side,
and a side where the opening portion 22a of the traverse
guide 22 is opened is referred to as a second side.
The yarn guiding section 30 includes a main guide
25 plate 31, a first auxiliary guide plate 32 and a second
auxiliary guide plate 33, and is provided in proximity to
and upstream of the traverse guide 22 in the travelling
directionoftheyarnY. Themain guide plate 31is amember
adapted to guide the yarn Y in the traverse direction. The
30 first auxiliary guide plate 32 and the second auxiliary
guide plate 33 are adapted to guide the yarn Y guided by
an upper-yarn c a t c h i n g and g u i d i n g d e v i c e ( y a r n c a t c h i n g
and guiding d e v i c e ) 60, which w i l l be d e s c r i b e d l a t e r , t o
a t r a v e r s e range R ( a region above t h e main guide p l a t e 31
and between t h e main guide p l a t e 31 and t h e f i r s t a u x i l i a r y
5 guide p l a t e 32, t h e second a u x i l i a r y guide p l a t e 33) . More
s p e c i f i c a l l y , t h e yarn Y is guided on t h e second a u x i l i a r y
guide p l a t e 33 from t h e f i r s t s i d e t o t h e second s i d e , then
guidedon t h e firstauxiliaryguideplate 32 f r o m t h e second
s i d e t o t h e f i r s t s i d e , and f i n a l l y guided t o t h e t r a v e r s e
10 range R (see FIG. 4 ) . A guide 34 s e r v i n g a s a t r a v e r s e
fulcrum of t h e yarn Y t r a v e r s e d by t h e t r a v e r s e device 20
is p r o v i d e d upstream o f t h e main guide p l a t e 31 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.
As i l l u s t r a t e d i n FIG. 1, a t e n s i o n a p p l y i n g d e v i c e
15 2, a y a r n j o i n i n g d e v i c e (a p r e s c r i b e d d e v i c e ) 3 and a y a r n
c l e a r e r 4 a r e provided i n t h i s o r d e r from a s i d e of t h e yarn
supplying s e c t i o n 40 i n t h e yarn t r a v e l l i n g path between
t h e y a r n s u p p l y i n g s e c t i o n 40 and t h e winding device 10.
The t e n s i o n applying d e v i c e 2 is adapted t o apply adequate
20 t e n s i o n on t h e yarn Y. The yarn c l e a r e r 4 is adapted t o
d e t e c t a y a r n d e f e c t such a s a s l u b o r t h e l i k e by d e t e c t i n g
a t h i c k n e s s of t h e yarn Y. The yarn c l e a r e r 4 is provided
w i t h a c u t t e r a d a p t e d t o c u t t h e y a r n y i n a c a s e o f d e t e c t i n g
t h e y a r n d e f e c t , f o r e x a m p l e . T h e y a r n c l e a r e r 4 m a y d e t e c t
25 whether o r not a f o r e i g n s u b s t a n c e is i n c l u d e d i n t h e yarn
Y.
For example, whenthe y a r n Y i s c u t by t h e yarn c l e a r e r
4 o r when t h e yarn Y from t h e y a r n s u p p l y i n g bobbin B1 is
broken, t h e yarn j o i n i n g device 3 is adapted t o perform a
30 yarn j o i n i n g o p e r a t i o n t o j o i n a lower yarn from t h e yarn
supplying bobbin B1 and an upper yarn from t h e winding
bobbin B2. A t t h i s t i m e , t h e lower yarn from t h e yarn
supplying bobbin B1 is guided t o t h e yarn j o i n i n g device
3 b y a l o w e r - y a r n catchingandguidingdevice 50. Theupper
yarn fromthewindingbobbinB2 is g u i d e d t o t h e yarn j o i n i n g
5 d e v i c e 3 by t h e upper-yarn c a t c h i n g and g u i d i n g d e v i c e 60.
The lower-yarn c a t c h i n g and g u i d i n g d e v i c e 50
performs a lower-yarn c a t c h i n g and guiding o p e r a t i o n t o
s u c k a n d c a t c h t h e lower yarn f r o m t h e yarn s u p p l y i n g b o b b i n
B1 and t o guide t h e c a u g h t y a r n t o t h e yarn j o i n i n g device
10 3. The lower-yarn c a t c h i n g and g u i d i n g d e v i c e 50 is formed
i n a pipe shape, and i s swingable i n a v e r t i c a l d i r e c t i o n
with a s h a f t 51 a s a c e n t e r i n a machine h e i g h t d i r e c t i o n .
Atatip-end portion ofthe lower-yarn c a t c h i n g and guiding
d e v i c e 50, a yarn s u c t i o n mouth 52 is provided. The
15 upper-yarn c a t c h i n g and g u i d i n g d e v i c e 60 performs an
upper-yarn c a t c h i n g a n d g u i d i n g o p e r a t i o n t o s u c k a n d c a t c h
t h e upper yarn from t h e winding bobbin B2 ( t h e yarn Y wound
around t h e winding bobbin B2) and t o guide t h e caught yarn
t o t h e yarn j o i n i n g d e v i c e 3. The upper-yarn c a t c h i n g and
20 g u i d i n g d e v i c e 6 0 i s f o r m e d i n a p i p e shape, a n d i s swingable
i n t h e v e r t i c a l d i r e c t i o n w i t h a s h a f t 61 a s a c e n t e r i n
t h e machine h e i g h t d i r e c t i o n . A t a t i p - e n d p o r t i o n of t h e
upper-yarn c a t c h i n g and guiding device 60, a yarn s u c t i o n
mouth 62 is provided. A n e g a t i v e p r e s s u r e source ( n o t
25 i l l u s t r a t e d ) i s connected t o t h e lower-yarn c a t c h i n g and
g u i d i n g d e v i c e 50 and t h e upper-yarn c a t c h i n g and guiding
d e v i c e 60. Consequently, s u c t i o n f o r c e is g e n e r a t e d i n t h e
yarn s u c t i o n mouth 52 and t h e yarn s u c t i o n mouth 62 t o
r e s p e c t i v e l y c a t c h t h e lower yarn and t h e upper yarn. The
30 yarn suctionmouth 62 o f t h e u p p e r - y a r n c a t c h i n g a n d g u i d i n g
d e v i c e 6 0 h a s a shapeextendingalongadirectionofacenter
axis line of the winding bobbin B2 such that when the
upper-yarn catching and guiding device 60 is swung upward
and the yarn suction mouth 62 is located in proximity to
the package P (see FIG. 3), the suction force can be
5 generated with respect to the entire outer peripheral
surface of the package P.
The yarn winding machine 1 is provided with a unit
control section (control section) 5. The unit control
section 5 is connected to each section (the winding device
10 10, the traverse device 20, the lower-yarn catching and
guiding device 50, the upper-yarn catching and guiding
device 60, the tension applying device 2, the yarn joining
device 3, the yarn clearer 4, and the like) of the yarn
winding machine 1. The unit control section 5 is adapted
15 to control operations of each section of the yarn winding
machine 1. The unit control section 5 is connected to a
machine control section adapted to collectively control a
p l u r a l i t y o f y a r n w i n d i n g m a c h i n e s 1 t h a t f o r m s anautomatic
winder.
2 0 Next, a yarn winding method performed in the yarn
winding machine 1 will be described with reference to
flowcharts in FIGS. 5 and 6. During operations of the yarn
winding machine 1, the unit control section 5 determines
whether or not the yarn Y has been cut by the yarn clearer
25 4, or whether or not a yarn breakage of the yarn Y from the
yarn supplyingbobbinB1has occurred (step Sol). When the
unit control section 5 determines that the yarn Y has been
cut by the yarn clearer 4 or that the yarn breakage of the
yarn Y from the yarn supplying bobbin B1 has occurred, the
30 unit control section 5 stops rotation ofthe winding bobbin
B2 by stopping drive of the winding-bobbin drive motor 13
(step S02), and decelerates and stops the traverse arm 21
by stoppingdriveofthetraverse-guidedrivemotor23 (step
S03). A stop of the rotation of the winding bobbin B2 may
be performed at substantially the same timing as
5 deceleration and stop of the traverse arm 21.
Alternatively, the stop of the rotation of the winding
bobbin B2 may be performed after the deceleration and stop
of the traverse arm 21.
Subsequently, the unit control section 5
10 determines whether or not the deceleration and stop of the
traverse arm 21 have been completed (step S04). When the
unit control section 5 determines that the deceleration and
stop of the traverse arm 21 have been completed, the unit
control section 5 moves the traverse guide 22 to a first
15 standby position WP1 by driving the traverse-guide drive
motor 23 (step S05). As illustrated in FIG. 7, the first
standby position WP1 is located further outward in a
traverse direction D than an end position EP1 on the first
side of a winding width W1 of the package P and an end
20 position EP2 on the first side of a yarn catching width W2
(a width of the yarn suction mouth 62 of the upper-yarn
catching and guiding device 60 at a position where the yarn
Y wound around the package P is caught) of the upper-yarn
catching and guiding device 60.
25 In an example illustrated in FIG. 7, the end position
EP2 on the first side of the yarn catching width W2 of the
upper-yarn catching and guiding device 60 is located
further outward in the traverse direction D than the end
position EP1 on the first side of the winding width W1 of
30 the package P. However, a positional relation between the
end position EP1 and the end position EP2 may be opposite
i n some c a s e s . As a f i r s t standby region WP1 i n common f o r
a p l u r a l i t y of t h e winding t u b e s T t h a t can be held by t h e
c r a d l e 1 1 ( t h a t is, apluralityofthewindingtubes Thaving
d i f f e r e n t l e n g t h s ) , t h e u n i t c o n t r o l s e c t i o n 5 may a l s o
5 determine t h e f i r s t standby region WP1 such t h a t t h e f i r s t
standby region WP1 is l o c a t e d f u r t h e r outward t h a n t h e end
p o s i t i o n EP1 on t h e f i r s t s i d e of t h e winding width W 1 of
t h e package P t o be wound around t h e winding tube T having
a maximum l e n g t h .
10 Then, t h e u n i t c o n t r o l s e c t i o n 5 c o n t r o l s t h e
upper-yarn c a t c h i n g and g u i d i n g d e v i c e 60 t o s t a r t t h e
upper-yarn c a t c h i n g a n d g u i d i n g o p e r a t i o n t o s u c k a n d c a t c h
t h e upper yarn from t h e winding bobbin B2 and t o guide t h e
caught yarn t o t h e yarn j o i n i n g device 3 ( s t e p S06), and
15 then determines whether o r not t h e upper-yarn c a t c h i n g and
guiding o p e r a t i o n has been completed ( s t e p S 0 7 ) . When t h e
u n i t c o n t r o l s e c t i o n 5 determines t h a t t h e upper-yarn
c a t c h i n g a n d g u i d i n g o p e r a t i o n h a s been completed, t h e u n i t
c o n t r o l s e c t i o n 5 moves t h e t r a v e r s e guide 22 t o a second
20 standby p o s i t i o n WP2 by d r i v i n g t h e t r a v e r s e - g u i d e d r i v e
motor 23 ( s t e p S08). As i l l u s t r a t e d i n FIG. 8, t h e second
standby p o s i t i o n WP2 i s a p o s i t i o n corresponding t o an end
p o s i t i o n EP3 on t h e f i r s t s i d e o f a n outermost l a y e r of t h e
package P. A width of t h e outermost l a y e r of t h e package
25 P is s u b s t a n t i a l l y equal t o a t r a v e r s e width TL of t h e
t r a v e r s e guide 22. The second standbypositionWP2 is thus
an end p o s i t i o n on t h e f i r s t s i d e of t h e t r a v e r s e width TL.
However, i n a p r e c i s e s e n s e , s i n c e t h e r e is a f r e e l e n g t h
between t h e t r a v e r s e guide 22 and t h e c o n t a c t r o l l e r 12,
30 t h e w i d t h o f t h e o u t e r m o s t l a y e r o f t h e p a c k a g e P i s s l i g h t l y
narrow with r e s p e c t t o t h e t r a v e r s e width TL. In such a
manner, the unit control section 5 determines the second
standby position WP2 such that the second standby position
WP2 is located at a position where the yarn Y guided on the
first auxiliary guide plate 32 from the second side to the
5 first side and reaching the traverse range R can be caught
by the traverse guide 22 of which the opening portion 22a
is opened to the second side.
The unit control section 5 may adjust the position
of the second standby region WP2 according to the end
10 position on the first side of the traverse width TL. For
example, as illustrated in FIG. 9, there is a case in which
taper winding is performed by gradually reducing the
traverse width TL accompanying an increase in a wound
diameter of the package P (in other words, by gradually
15 changing inward the end position on the first side and the
end position on the second side of the traverse width TL) .
In such a manner, in a case where the end positions of the
traverse width TL are changed, the unit control section 5
determines the end position EP3 on the first side as the
20 second standby region WP2 out of the end position on the
first side and the end position on the second side of the
traverse width TL immediately before the deceleration and
stop of the traverse arm 21 (immediately before step S 0 3 ) .
In addition, the unit control section 5 may locate the
25 second standby position WP2 further inward than the first
standbypositionWP1 with respect tothe traverse width TL.
In this case also, the second standby position WP2 is
preferably the position where the yarn Y guided to the
t r a v e r s e r a n g e R b y t h e y a r n g u i d i n g s e c t i o n 3 0 canbecaught
30 by the traverse guide 22.
Then, the unit control section 5 determines whether
or not the yarn joining operationby the yarn joining device
3 has been completed (that is, whether or not the lower yarn
from the yarn supplying bobbin B1 guided by the lower-yarn
catching and guiding device 50 and the upper yarn from the
5 winding bobbin B2 guided by the upper-yarn catching and
guiding device 60 have been joined) (step S09). When
determining that the yarn joining operation has been
completed, the unit control section 5 starts rotating the
windingbobbin B2 bydrivingthe winding-bobbin drivemotor
10 13 (step S10) and starts an operation of the traverse arm
21bydrivingthetraverse-guide drivemotor 23 (step Sll).
The start of rotation ofthe winding bobbin B2 and the start
of the operation of the traverse arm 21 may be performed
in a substantially simultaneous manner, or the start of
15 rotation of the winding bobbin B2 may be performed after
the start of the operation of the traverse arm 21.
In the above-described manner, during a first period
(at least a period of time from when the upper yarn from
the winding bobbin B2 is caught by the upper-yarn catching
20 and guiding device 60 until when the upper yarn from the
winding bobbin B2 caught by the upper-yarn catching and
guiding device 60 reaches the yarn guiding section 30),
which is a period of time when the traverse operation is
under a stop (after step S04) and when the upper-yarn
25 catching and guiding operation is being performed (steps
SO6 and S07), the unit control section 5 controls the
traverse guide 22 to be under standby at the first standby
position WP1 located further outward than the end position
EP1 on the first side of the winding width W1 of the package
30 P and the end position EP2 on the first side of the yarn
catching width W2 of the upper-yarn catching and guiding
device 60 (a f i r s t s t e p ) . Furthermore, during a second
period ( a t l e a s t a period of time fromwhenthe yarn j o i n i n g
operation by t h e yarn j o i n i n g d e v i c e 3 is completed u n t i l
when t h e r o t a t i o n of the winding bobbin B2 is s t a r t e d ) ,
5 whichisaperiodoftimeafteranelapseofthefirstperiod
and before a s t a r t of t h e t r a v e r s e o p e r a t i o n ( b e f o r e s t e p
S l l ) , t h e u n i t c o n t r o l s e c t i o n 5 c o n t r o l s t h e t r a v e r s e g u i d e
22 t o be under standby a t t h e second standby p o s i t i o n WP2
corresponding t o t h e end p o s i t i o n EP3 on the f i r s t s i d e of
10 t h e outermost l a y e r of t h e package P (a second s t e p ) .
As described above, i n t h e yarn winding machine 1,
t h e t r a v e r s e guide 22 is c o n t r o l l e d t o be under standby a t
t h e f i r s t standby p o s i t i o n WP1 during t h e f i r s t period,
which is t h e period of time when t h e t r a v e r s e operation is
15 under t h e s t o p andwhen t h e upper-yarn catching and guiding
o p e r a t i o n is being performed. The f i r s t standby p o s i t i o n
WP1 is a p o s i t i o n located f u r t h e r outward than t h e end
p o s i t i o n EP1 on t h e f i r s t s i d e of t h e winding width W1 of
t h e package P and t h e end p o s i t i o n EP2 on t h e f i r s t s i d e
20 of t h e yarn catching width W2 of t h e upper-yarn catching
and guiding device 60. Consequently, t h e t r a v e r s e guide
22 can be prevented from d i s t u r b i n g t h e yarn catching and
guiding o p e r a t i o n p e r f o r m e d b y t h e upper-yarn catching and
guiding device 60. A s t i t c h i n g t h a t is caused by the yarn
25 Y being guided t o a r e g i o n o u t s i d e of t h e t r a v e r s e guide
22 by t h e yarn guiding s e c t i o n 30 a l s o canbe prevented from
occurring. Furthermore, during t h e second period, which
is t h e period of time a f t e r t h e e l a p s e of t h e f i r s t period
a n d b e f o r e t h e s t a r t o f t h e t r a v e r s e operation, t h e t r a v e r s e
30 guide 22 is c o n t r o l l e d t o be under standby a t t h e second
standby p o s i t i o n WP2 located f u r t h e r inward than t h e f i r s t
standby region WP1 with r e s p e c t t o t h e t r a v e r s e width TL.
The second standbypositionWP2 is a p o s i t i o n corresponding
t o t h e end p o s i t i o n EP3 on t h e f i r s t s i d e of t h e outermost
l a y e r of t h e package P. Consequently, a s t i t c h i n g t h a t is
5 caused by t h e yarn Y e n t e r i n g a region between t h e end
s u r f a c e of t h e package P and t h e t r a v e r s e guide 22 is
prevented from o c c u r r i n g . With t h e yarn winding machine
1, a d e f e c t such a s t h e s t i t c h i n g o r t h e l i k e t h u s can be
prevented f r o m o c c u r r i n g . The second standbypositionWP2
10 i s not l i m i t e d t o t h e p o s i t i o n corresponding t o t h e end
p o s i t i o n EP3 on t h e f i r s t s i d e of t h e outermost l a y e r of
t h e package P. The second standby p o s i t i o n WP2 may be a
p o s i t i o n corresponding t o an e n d p o s i t i o n on t h e f i r s t s i d e
o f a yarn l a y e r w i t h i n t h e outermost l a y e r range ( a range
15 i n c l u d i n g t h e outermost l a y e r , and a p r e s c r i b e d range
l o c a t e d inward from t h e outermost l a y e r ) of t h e package P.
In t h e yarn winding machine 1, n o t o n l y i n a case of
i n t e r r u p t i n g and resuming t h e t r a v e r s e o p e r a t i o n a f t e r t h e
y a r n Y i s c u t b y t h e y a r n c l e a r e r 4 o r a f t e r t h e y a r n b r e a k a g e
20 of t h e yarn Y from t h e y a r n s u p p l y i n g bobbin B1, but, f o r
example, i n a c a s e of s t a r t i n g t h e t r a v e r s e o p e r a t i o n t o
s t a r t winding t h e yarn Y aroundan empty winding tube T from
a s t a t e where t h e t r a v e r s e o p e r a t i o n is stopped, t h e d e f e c t
such a s t h e s t i t c h i n g o r t h e l i k e can b e p r e v e n t e d from
25 occurringwhenthetraverseoperationisundera s t o p a n d / o r
i s s t a r t e d . For example, t h e s t i t c h i n g may occur a l s o i n
a case where t h e upper yarn from t h e package P is guided
when t h e t r a v e r s e o p e r a t i o n i s under a s t o p ( a t t h i s t i m e ,
thewindingbobbinB2maybe rotatednotonlyinanunwinding
30 d i r e c t i o n , but a l s o i n a winding d i r e c t i o n ) . The s t i t c h i n g
may occur a l s o i n a case where t h e winding bobbin B2 is
rotated in the winding direction when the traverse
operation is under a stop. The stitching may occur also
in a case where the winding bobbin B2 is rotated in the
winding direction at substantially the same timing as the
5 start of the traverse operation. With the yarn winding
machine 1, the stitching can be effectively prevented from
occurring.
In the yarn winding machine 1, until an end of the
yarn joining operation by the yarn joining device 3, the
10 traverse guide 22 is controlled to be under standby at the
second standby position WP2. Consequently, the yarn
joining operation can be favorably performed, and the
traverse operation can be favorably started.
The unit control section 5 is capable of determining
15 the first standby region WP1 such that the first standby
regionWP1is located further outward than the end position
EP1 on the first side of the winding width W1 of the package
P to be wound around the winding tube T having a maximum
length. In this case, regardless ofalengthofthewinding
20 tube T, the traverse guide 22 canbemore reliablyprevented
from disturbing the upper-yarn catching and guiding
operation performedbythe upper-yarn catching and guiding
device 60. The stitchingthat is causedbythe yarnybeing
guided to the region outside of the traverse guide 22 also
25 can be more reliably prevented from occurring.
The unit control section 5 is capable of adjusting
the position of the second standby position WP2 according
to the end position EP3 of the traverse width TL. In this
case, the stitching that is caused by the yarn Y entering
30 the region between the end surface of the package P and the
traverse guide 22 when the traverse operation is started
can be more reliably prevented from occurring.
The unit control section 5 is capable of determining
the second standby region WP2 such that the second standby
r e g i o n W P 2 i s l o c a t e d a t t h e p o s i t i o n w h e r e t h e y a r n Y g u i d e d
5 to the traverse range R by the yarn guiding section 30 can
be caught by the traverse guide 22. In this case, the
stitching that is caused by the yarn Y entering the region
between the end surface of the package P and the traverse
guide 22 when the traverse operation is started can be more
10 reliably prevented from occurring.
One embodiment of the present invention has been
described above, but the present invention is not limited
to the above-described embodiment. For example, the unit
control section 5 may control the traverse guide 22 to be
15 under standby within the first standby region WP1 having
a prescribed range during the first period, which is the
period of time when the traverse operation is under a stop
and when the upper-yarn catching and guiding operation is
being performed. The first standby region WP1, as one
20 example, is a region located further outward than the end
position EP1 on the first side of the winding width W1 of
the package P and the end position EP2 on the first side
of the yarn catching width W2 of the upper-yarn catching
and guiding device 60. As long as the traverse guide 22
25 islocatedwithinthe firststandbyregionWP1, thetraverse
guide 22 is not required to be under a stop within the first
standby region WP1, for example, the traverse guide 22 may
be moving within the first standby region WP1 at a speed
slower than a traverse speed. A stop of the traverse
30 operation indicates a state in which traverse of the yarn
Y is stopped. Therefore, , in some cases, the traverse
guide 22 may be moving when t h e t r a v e r s e operation is under
a s t o p , as i n t h e example i n which t h e t r a v e r s e guide 22
moves within t h e f i r s t standby region WP1 a t a speed slower
than t h e t r a v e r s e speed.
5 The u n i t c o n t r o l s e c t i o n 5 may c o n t r o l t h e t r a v e r s e
guide 22 t o be under standby within t h e second standby
region WP2 having a prescribed range during t h e second
period, which is t h e period of time a f t e r t h e elapse of t h e
firstperiodandbeforethestartofthetraverseoperation.
10 The second standby region WP2 is a region located f u r t h e r
inward than t h e f i r s t standby region WP1 with r e s p e c t t o
t h e t r a v e r s e width TL. The second standby region WP2, as
one example, is a region corresponding t o t h e end p o s i t i o n
EP3 on t h e f i r s t s i d e of t h e outermost l a y e r range of t h e
15 package P. As long a s t h e t r a v e r s e guide 22 is located
within t h e second standby region WP2, t h e t r a v e r s e guide
22 i s not required t o be under a s t o p within t h e second
standby region WP2, f o r example, t h e t r a v e r s e guide 22 may
be moving within t h e second standby region WP2 a t a speed
20 slower than t h e t r a v e r s e speed.
However, as i n t h e above-describedembodiment, i f t h e
u n i t c o n t r o l s e c t i o n 5 is adapted t o c o n t r o l t h e t r a v e r s e
guide 22 t o s t o p a t t h e f i r s t standby p o s i t i o n WP1 and t h e
second standby p o s i t i o n WP2, c o n t r o l f o r causing t h e
25 t r a v e r s e guide 22 t o be under standby can be s i m p l i f i e d .
ThewindingbobbinB2 is not l i m i t e d t o b e i n g d i r e c t l y
r o t a t e d b y t h e winding-bobbin d r i v e motor 13. The winding
bobbin B2 may be r o t a t e d accordingly by a d r i v e r o l l e r i n
contact with a s u r f a c e of t h e winding bobbin B2. A shape
30 of t h e contact r o l l e r 12 is not l i m i t e d t o a cone shape of
which diameters of both ends a r e d i f f e r e n t fromeach o t h e r ,
and may be a c y l i n d r i c a l s h a p e o f which d i a m e t e r s of both
ends a r e t h e same.
The t r a v e r s e d e v i c e 20 is not l i m i t e d t o a
c o n f i g u r a t i o n i n which a l o n g i t u d i n a l d i r e c t i o n of t h e
5 t r a v e r s e arm 21 i s p a r a l l e l t o an i n s t a l l a t i o n d i r e c t i o n
( t h e v e r t i c a l d i r e c t i o n ) of t h e yarn winding machine 1, and
may be a c o n f i g u r a t i o n i n which t h e l o n g i t u d i n a l d i r e c t i o n
of t h e t r a v e r s e arm 21 is v e r t i c a l t o t h e i n s t a l l a t i o n
d i r e c t i o n o f t h e yarnwindingmachin e l . The t r a v e r s e g u i d e
10 22 is not l i m i t e d t o t h e hook-shaped member t h a t t r a v e r s e s
t h e yarn Y w h i l e b e i n g engaged with t h e yarn Y, and may be
a c o n f i g u r a t i o n having a f i n g e r shape o r t h e l i k e i n which
t h e yarn Y is sandwiched by a p l u r a l i t y of s t i c k - s h a p e d
members. The t r a v e r s e o p e r a t i o n of t h e t r a v e r s e guide 22
15 i s not l i m i t e d t o a c a s e i n which t h e t r a v e r s e o p e r a t i o n
is r e a l i z e d with t h e t r a v e r s e arm 21 swung by t h e
t r a v e r s e - g u i d e d r i v e m o t o r 23. The t r a v e r s e operationmay
be realizedbyreciprocatingwith a p u l s e m o t o r , an e n d l e s s
timing b e l t t o which t h e t r a v e r s e guide 22 is mounted.
20 In t h e above-describedembodiments, t h e yarn winding
machines 1 form an a u t o m a t i c winder, but t h e p r e s e n t
inventionmaybe appliedtootheryarnwindingmachines such
a s an a i r - j e t s p i n n i n g machine, an open-end s p i n n i n g
machine, and t h e l i k e .
2 5 A yarn winding machine a c c o r d i n g t o 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 a t r a v e r s e g u i d e a d a p t e d t o perform a
t r a v e r s e o p e r a t i o n t o t r a v e r s e a y a r n t o be wound around
a package w i t h i n a t r a v e r s e width according t o t h e package,
a y a r n c a t c h i n g a n d g u i d i n g device a d a p t e d t o p e r f o r m a yarn
30 c a t c h i n g and guiding o p e r a t i o n t o c a t c h t h e yarn wound
around t h e package and t o guide t h e c a u g h t y a r n t o a
p r e s c r i b e d d e v i c e , anda 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 t r a v e r s e guide t o be under standby within a f i r s t
standby region during a f i r s t period, which is a period of
time when t h e t r a v e r s e o p e r a t i o n is under a s t o p and when
5 t h e yarn catchingandguidingoperationisbeingperformed,
and t o c o n t r o l t h e t r a v e r s e guide t o b e under standby within
a second standby region located f u r t h e r inward than t h e
f i r s t standby r e g i o n w i t h r e s p e c t t o t h e t r a v e r s e width
during a second period, which i s a period of time a f t e r an
10 e l a p s e o f t h e f i r s t p e r i o d a n d b e f o r e a s t a r t o f t h e t r a v e r s e
operation.
In t h e yarn winding machine, t h e t r a v e r s e guide is
c o n t r o l l e d t o be under standby within t h e f i r s t standby
region during t h e f i r s t period, which is t h e period of time
15 when t h e t r a v e r s e o p e r a t i o n is under a s t o p and when t h e
yarn catching and guiding operation is being performed.
Consequently, t h e t r a v e r s e guide can be prevented from
d i s t u r b i n g t h e yarn catching and guiding operation
performed by t h e yarn catching and guiding d e v i c e . In
20 a d d i t i o n , a s t i t c h i n g t h a t is caused by t h e yarn being
guided t o a r e g i o n o u t s i d e of t h e t r a v e r s e guide can be
preventedfromoccurring. Furthermore, t h e t r a v e r s e g u i d e
is c o n t r o l l e d t o be under standby within t h e second standby
regionlocatedfurtherinwardthanthe f i r s t standby region
25 withrespecttothetraversewidthduringthe secondperiod,
which is t h e period of time a f t e r t h e e l a p s e of t h e f i r s t
period and before t h e s t a r t of t h e t r a v e r s e operation.
Consequently, a s t i t c h i n g t h a t is caused by t h e yarn
e n t e r i n g a r e g i o n between an end surface of t h e package and
30 t h e t r a v e r s e guide when t h e t r a v e r s e o p e r a t i o n is s t a r t e d
can be prevented from occurring. With t h e yarn winding
machine, a d e f e c t such a s t h e s t i t c h i n g o r t h e l i k e thus
can b e p r e v e n t e d from o c c u r r i n g .
In t h e yarn winding machine according t o t h e p r e s e n t
i n v e n t i o n , t h e p r e s c r i b e d device is a yarn j o i n i n g device
5 adapted t o perform a yarn j o i n i n g o p e r a t i o n , and u n t i l
completion o f t h e yarn j o i n i n g o p e r a t i o n , t h e c o n t r o l
s e c t i o n may c o n t r o l t h e t r a v e r s e guide t o be under standby
w i t h i n t h e second standby r e g i o n . In t h i s c a s e , t h e yarn
j o i n i n g o p e r a t i o n can be f a v o r a b l y performed, and t h e
10 t r a v e r s e o p e r a t i o n can be f a v o r a b l y s t a r t e d .
A yarn winding machine according t o 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 a t r a v e r s e g u i d e a d a p t e d t o perform a
t r a v e r s e o p e r a t i o n t o t r a v e r s e a yarn t o be wound around
a package w i t h i n a t r a v e r s e width according t o t h e package,
15 a yarncatchingandguidingdevice a d a p t e d t o p e r f o r m a yarn
c a t c h i n g and guiding o p e r a t i o n t o c a t c h t h e yarn wound
around t h e package and t o guide t h e caught yarn t o a
p r e s c r i b e d d e v i c e , a n d a 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 t r a v e r s e guide t o be under standby w i t h i n a f i r s t
20 standby r e g i o n l o c a t e d f u r t h e r outwardthan a n e n d p o s i t i o n
o f a winding width of t h e package and an end p o s i t i o n of
a yarn c a t c h i n g width of t h e yarn c a t c h i n g and guiding
d e v i c e , and t o c o n t r o l t h e t r a v e r s e guide t o be under
standby w i t h i n a second s t a n d b y r e g i o n corresponding t o an
25 end p o s i t i o n o f a n outermost l a y e r r a n g e o f t h e package.
In t h e yarn winding machine, t h e t r a v e r s e guide is
c o n t r o l l e d t o be under standby w i t h i n t h e f i r s t standby
r e g i o n l o c a t e d f u r t h e r outward than t h e end p o s i t i o n o f t h e
winding w i d t h o f t h e package and t h e end p o s i t i o n of t h e
30 yarn c a t c h i n g width of t h e yarn c a t c h i n g and g u i d i n g d e v i c e
( a width of a c a t c h i n g s e c t i o n of t h e yarn c a t c h i n g and
g u i d i n g d e v i c e a t a p o s i t i o n where t h e yarn wound around
t h e package is c a u g h t ) . Consequently, t h e t r a v e r s e guide
can b e p r e v e n t e d from d i s t u r b i n g t h e yarn c a t c h i n g and
guiding o p e r a t i o n performed by t h e yarn c a t c h i n g and
5 g u i d i n g d e v i c e . In a d d i t i o n , a s t i t c h i n g t h a t is caused
by t h e y a r n b e i n g g u i d e d t o a region o u t s i d e o f t h e t r a v e r s e
g u i d e c a n b e p r e v e n t e d from o c c u r r i n g . Furthermore, t h e
t r a v e r s e guide is c o n t r o l l e d t o be under standby w i t h i n t h e
second standby r e g i o n corresponding t o t h e end p o s i t i o n of
10 t h e outermost l a y e r range (a range i n c l u d i n g t h e outermost
l a y e r , and a p r e s c r i b e d range l o c a t e d inward from t h e
outermost l a y e r ) of t h e package. Consequently, a
s t i t c h i n g t h a t is caused by t h e yarn e n t e r i n g a region
between a n e n d s u r f a c e o f t h e package a n d t h e t r a v e r s e g u i d e
15 whenthe t r a v e r s e o p e r a t i o n i s startedcanbepreventedfrom
o c c u r r i n g . With t h e yarn winding machine, a d e f e c t such
a s t h e s t i t c h i n g o r t h e l i k e t h u s can b e p r e v e n t e d from
o c c u r r i n g .
With t h e yarn winding machine a c c o r d i n g t o t h e
20 p r e s e n t i n v e n t i o n , t h e p r e s c r i b e d device may be a y a r n
j o i n i n g device a d a p t e d t o p e r f o r m a yarn j o i n i n g o p e r a t i o n .
In t h i s c a s e , t h e yarn j o i n i n g o p e r a t i o n c a n b e f a v o r a b l y
performed, and t h e t r a v e r s e o p e r a t i o n can be f a v o r a b l y
s t a r t e d .
2 5 With t h e yarn winding machine according t o t h e
p r e s e n t i n v e n t i o n , t h e c o n t r o l s e c t i o n may c o n t r o l t h e
t r a v e r s e guide t o b e under standby w i t h i n t h e f i r s t standby
region by s t o p p i n g t h e t r a v e r s e guide a t a f i r s t standby
p o s i t i o n , a n d c o n t r o l t h e t r a v e r s e guide t o b e u n d e r s t a n d b y
30 w i t h i n t h e second standby region by s t o p p i n g t h e t r a v e r s e
guide a t a second standby p o s i t i o n . In t h i s c a s e , c o n t r o l
o f t h e t r a v e r s e guide t o b e under standby c a n b e s i m p l i f i e d .
I n t h e yarn winding machine according t o t h e p r e s e n t
i n v e n t i o n , t h e c o n t r o l s e c t i o n m a y a d j u s t a p o s i t i o n o f t h e
second standby region according t o an end p o s i t i o n of t h e
5 t r a v e r s e width. In t h i s c a s e , t h e s t i t c h i n g t h a t i s caused
by t h e yarn e n t e r i n g t h e region between t h e end s u r f a c e of
t h e package and t h e t r a v e r s e guide when t h e t r a v e r s e
o p e r a t i o n is s t a r t e d c a n b e more r e l i a b l y prevented from
o c c u r r i n g .
10 The yarn winding machine a c c o r d i n g t o t h e p r e s e n t
inventionmay f u r t h e r i n c l u d e a h o l d i n g s e c t i o n a d a p t e d t o
hold a winding tube having a d i f f e r e n t l e n g t h , and t h e
c o n t r o l s e c t i o n may determine t h e f i r s t standby region t o
be l o c a t e d f u r t h e r outwardthan a n e n d p o s i t i o n of awinding
15 w i d t h o f t h e package wound around t h e winding tube having
a maximum l e n g t h . In t h i s c a s e , r e g a r d l e s s of t h e l e n g t h
o f t h e w i n d i n g t u b e , t h e t r a v e r s e guide canbemore r e l i a b l y
prevented from d i s t u r b i n g t h e yarn c a t c h i n g and guiding
o p e r a t i o n p e r f o r m e d b y t h e yarn catchingandguidingdevice.
20 In a d d i t i o n , r e g a r d l e s s of t h e l e n g t h of t h e winding tube,
t h e s t i t c h i n g t h a t is caused by t h e yarn being guided t o
t h e region o u t s i d e of t h e t r a v e r s e guide can be more
r e l i a b l y p r e v e n t e d from o c c u r r i n g .
The yarn winding machine a c c o r d i n g t o t h e p r e s e n t
25 i n v e n t i o n may f u r t h e r i n c l u d e a c o n t a c t r o l l e r provided
independently f r o m t h e t r a v e r s e guide a n d a d a p t e d t o r o t a t e
i n c o n t a c t with an 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 package.
In t h i s c a s e , t h e y a r n c a n b e f a v o r a b l y wound around t h e
package.
30 The yarn winding machine according t o t h e p r e s e n t
i n v e n t i o n may f u r t h e r i n c l u d e a yarn guiding s e c t i o n
adapted t o guide t o a t r a v e r s e range, t h e yarn guided t o
t h e p r e s c r i b e d device by t h e yarn c a t c h i n g and guiding
d e v i c e , and t h e c o n t r o l s e c t i o n may determine t h e second
standby region such t h a t t h e second standby region is
5 l o c a t e d a t a p o s i t i o n where t h e yarn guided t o t h e t r a v e r s e
range by t h e yarn guiding s e c t i o n can be caught by t h e
t r a v e r s e guide. In t h i s c a s e , t h e s t i t c h i n g t h a t is caused
by t h e yarn e n t e r i n g t h e region between t h e end s u r f a c e of
t h e package and t h e t r a v e r s e guide when t h e t r a v e r s e
10 o p e r a t i o n is s t a r t e d can be more r e l i a b l y p r e v e n t e d from
o c c u r r i n g .
A yarn winding method according t o t h e p r e s e n t
i n v e n t i o n is p e r f o r m e d i n a y a r n winding machine i n c l u d i n g
a t r a v e r s e g u i d e a d a p t e d t o perform a t r a v e r s e o p e r a t i o n
15 t o t r a v e r s e a y a r n t o be wound around a package w i t h i n a
t r a v e r s e w i d t h a c c o r d i n g t o t h e p a c k a g e , a n d a y a r n c a t c h i n g
and g u i d i n g d e v i c e adapted t o perform a y a r n c a t c h i n g and
g u i d i n g o p e r a t i o n t o c a t c h t h e yarnwoundaroundthe package
and t o guide t h e caught yarn t o a p r e s c r i b e d d e v i c e . The
20 yarn winding method i n c l u d e s a f i r s t s t e p of c o n t r o l l i n g
t h e t r a v e r s e guide t o be under standby w i t h i n a f i r s t
s t a n d b y r e g i o n d u r i n g a f i r s t p e r i o d , which is a p e r i o d of
t i m e when t h e t r a v e r s e o p e r a t i o n is under a s t o p and when
t h e yarn c a t c h i n g a n d g u i d i n g o p e r a t i o n is beingperformed,
25 and a second s t e p of c o n t r o l l i n g t h e t r a v e r s e guide t o be
under standby w i t h i n a second standby r e g i o n l o c a t e d
f u r t h e r inward than t h e f i r s t standby r e g i o n w i t h r e s p e c t
t o t h e t r a v e r s e width d u r i n g a second p e r i o d , which is a
p e r i o d o f time a f t e r a n e l a p s e o f t h e f i r s t p e r i o d a n d b e f o r e
30 a s t a r t of t h e t r a v e r s e o p e r a t i o n .
A yarn winding method according t o t h e p r e s e n t
invention is p e r f o r m e d i n a yarn winding machine including
a t r a v e r s e guide adapted t o perform a t r a v e r s e operation
t o t r a v e r s e a yarn t o be wound around a package w i t h i n a
t r a v e r s e w i d t h a c c o r d i n g t o t h e p a c k a g e , a n d a y a r n c a t c h i n g
5 and guiding device adapted t o perform a yarn catching and
guidingoperationtocatchtheyarnwoundaroundthepackage
and t o guide t h e caught yarn t o a p r e s c r i b e d device. The
yarn winding method i n c l u d e s a f i r s t s t e p of c o n t r o l l i n g
t h e t r a v e r s e guide t o be under standby w i t h i n a f i r s t
10 standby region located f u r t h e r outwardthanan e n d p o s i t i o n
of a winding width of t h e package and an end p o s i t i o n of
a yarn catching width of t h e yarn catching and guiding
device and a second s t e p of c o n t r o l l i n g t h e t r a v e r s e guide
t o be under standby w i t h i n a second standby region
15 c o r r e s p o n d i n g t o a n e n d p o s i t i o n o f a n o u t e r m o s t l a y e r r a n g e
of t h e package.
With t h e above-describedyarnwindingmethods, i n t h e
same manner as i n t h e above-described yarn windingmachine
of t h e present invention, t h e d e f e c t such a s t h e s t i t c h i n g
20 can be prevented from occurring.
WE CLAIM:
1. A yarn winding machine comprising:
a traverse guide adapted to perform a traverse
operation to traverse a yarn to be wound around a package
5 within a traverse width according to the package;
a yarn catching and guiding device adaptedto perform
a yarn catching and guiding operation to catch the yarn
wound around the package and to guide the caught yarn to
a prescribed device; and
10 a control section adapted to control the traverse
guide to be under standby within a first standby region
during a first period, the first period being a period of
time when the traverse operation is under a stop and when
the yarn catching andguidingoperation is beingperformed,
15 and to control the traverse guide to be under standby within
a second standby region during a second period, the second
standby region being located further inward than the first
standby region with respect to the traverse width, and the
second period being a period of time after an elapse of the
20 first period and before a start of the traverse operation.
2. The yarn winding machine according to claim 1,
wherein the prescribed device is a yarn joining device
adapted to perform a yarn joining operation, and
2 5 until completion of the yarn joining operation, the
control section is adapted to control the traverse guide
to be under standby within the second standby region.
3. A yarn winding machine comprising:
30 a traverse guide adapted to perform a traverse
operation to traverse a yarn to be wound around a package
w i t h i n a t r a v e r s e width according t o t h e package;
a yarn c a t c h i n g a n d g u i d i n g device a d a p t e d t o p e r f o r m
a yarn c a t c h i n g and guiding o p e r a t i o n t o c a t c h t h e yarn
wound around t h e package and t o guide t h e caught yarn t o
5 a p r e s c r i b e d device; and
a c o n t r o l s e c t i o n adapted t o c o n t r o l t h e t r a v e r s e
guide t o be under standby w i t h i n a f i r s t standby region
l o c a t e d f u r t h e r outward t h a n an end p o s i t i o n o f a winding
w i d t h o f t h e package and an end p o s i t i o n o f a yarn c a t c h i n g
10 w i d t h o f t h e yarn c a t c h i n g and guiding device, and t o
c o n t r o l t h e t r a v e r s e guide t o be under standby w i t h i n a
second standby region corresponding t o an end p o s i t i o n of
a n outermost l a y e r r a n g e o f t h e package.
15 4 . The yarn winding machine according t o claim 3,
wherein t h e p r e s c r i b e d d e v i c e i s a yarn j o i n i n g d e v i c e
adapted t o perform a yarn j o i n i n g o p e r a t i o n .
5. The yarn winding machine according t o any one of
20 claim 1 through claim 4 , wherein t h e c o n t r o l s e c t i o n i s
adapted t o c o n t r o l t h e t r a v e r s e guide t o be under standby
w i t h i n t h e f i r s t standby region by s t o p p i n g t h e t r a v e r s e
guide a t a f i r s t standby p o s i t i o n , and t o c o n t r o l t h e
t r a v e r s e g u i d e t o b e u n d e r s t a n d b y w i t h i n t h e secondstandby
25 region by s t o p p i n g t h e t r a v e r s e guide a t a second standby
p o s i t i o n .
6. The yarn winding machine according t o any one of
claim 1 through claim 5, wherein t h e c o n t r o l s e c t i o n is
30 adapted t o a d j u s t a p o s i t i o n of t h e second standby region
according t o an end p o s i t i o n of t h e t r a v e r s e width.
7. The yarn winding machine according t o any one of
claim 1 through claim 6, f u r t h e r comprising a holding
s e c t i o n adapted t o hold a winding tube having a d i f f e r e n t
5 l e n g t h ,
wherein t h e c o n t r o l s e c t i o n is adapted t o determine
t h e f i r s t standby region t o b e l o c a t e d f u r t h e r outward than
an end p o s i t i o n of a winding w i d t h o f t h e package wound
around t h e winding tube having a maximum l e n g t h .
10
8. The yarn winding machine a c c o r d i n g t o any one of
c l a i m l t h r o u g h c l a i m 7 , furthercomprisingacontactroller
p r o v i d e d i n d e p e n d e n t l y f r o m t h e t r a v e r s e guide and adapted
t o r o t a t e i n c o n t a c t with an o u t e r p e r i p h e r a l s u r f a c e of
15 t h e package.
9. The yarn winding machine a c c o r d i n g t o any one of
claim 1 through claim 8, f u r t h e r comprising a yarn guiding
s e c t i o n adapted t o guide t h e yarn t o a t r a v e r s e range when
20 t h e yarn i s guided t o t h e p r e s c r i b e d device by t h e yarn
c a t c h i n g and g u i d i n g d e v i c e ,
wherein t h e c o n t r o l s e c t i o n is adapted t o determine
t h e second standby r e g i o n such t h a t t h e second standby
region i s l o c a t e d a t a p o s i t i o n where t h e yarn guided t o
25 t h e t r a v e r s e rangeby t h e yarn guiding s e c t i o n c a n b e caught
by t h e t r a v e r s e guide.
10. Ayarnwindingmethodperformedinayarnwinding
machine comprising a t r a v e r s e g u i d e a d a p t e d t o perform a
30 t r a v e r s e o p e r a t i o n t o t r a v e r s e a yarn t o be wound around
a p a c k a g e w i t h i n a t r a v e r s e width a c c o r d i n g t o t h e package,
and a yarn catching and guiding device adapted to perform
a yarn catching and guiding operation to catch the yarn
wound around the package and to guide the caught yarn to
a prescribed device, the yarn winding method comprising:
5 a first step of controlling the traverse guide to be
under standby within a first standby region during a first
period, the first period being a period of time when the
traverse operation is under a stop and when the yarn
catching and guiding operation is being performed; and
10 a second step of controlling the traverse guide to
be under standby within a second standby region during a
second period, the second standby region being located
further inward than the first standby region with respect
to the traverse width, and the second period being a period
15 of time after an elapse of the first period and before a
start of the traverse operation.
11. Ayarnwindingmethodperformedinayarnwinding
machine comprising a traverse guide adapted to perform a
20 traverse operation to traverse a yarn to be wound around
a package within atraverse width according tothe package,
and a yarn catching and guiding device adapted to perform
a yarn catching and guiding operation to catch the yarn
wound around the package and to guide the caught yarn to
25 a prescribed device, the yarn winding method comprising:
a first step of controlling the traverse guide to be
under standbywithin a first standby region located further
outward than an end position of a winding width of the
package and an end position of a yarn catching width of the
30 yarn catching and guiding device; and
a second step of controlling the traverse guide to
be under standby w i t h i n a second standby region
correspondingtoanendpositionofanoutermostlayerrange
of t h e package.
5 Dated this 23rd day of July 2014
Of Anand and Anand Advocates
Agent for the Applicant
ABSTRACT
YARN WINDING MACHINE AND YARN WINDING METHOD
5 A yarn winding machine 1 includes a traverse guide
22 , an upper-yarn catching and guiding device 60, and a
unit control section 5 adaptedtocontrolthetraverseguide
22 to be under standby within a first standby region WP1
during a first period, which is a period of time when the
10 traverse operation is under a stop and when an upper-yarn
catching and guiding operation is being performed, and to
control the traverse guide 22 to be under a standby within
a second standby region WP2 located further inward than the
first standby region WP1 with respect to the traverse width
15 TL during a second period, which is a period of time after
an elapse of the first period and before a start of the
traverse operation.
REFER TO FIG. 1