YARN DEFECT CLASSIFYING DEVICE AND YARN WINDING MACHINE
BACKGROUND OF THE INVENTION
1. Field of the Invention
5 The present invention r e l a t e s t o a yarn defect classifying
device use dinayarn windingmachine such as a spinningmachine and/or
an automatic winder, and the l i k e , and a yarn winding machine.
2 . Description of the Related A r t
10 A conventional yarnwindingmachine d e t e c t s a y a r n d e f e c t while
winding a yarn, and removes the yarn defect when the detected yarn
defect meets a prescribed condition. With regards t o such yarn
windingmachine, f o r example, Japanese Unexamined Patent Publication
No. 2000-327226 describes providing a s e n s i t i v i t y a d j u s t i n g function
15 t o a yarn defect detecting device adapted t o d e t e c t the yarn defect
a t high accuracy.
BRIEF SUMMARY OF THE INVENTION
The following problems a r i s e when determination information
20 i n d i c a t i n g whether or not the yarn defect has been removed, and
c l a s s i f i c a t i o n information i n d i c a t i n g d i s p l a y length and display
thickness of the yarn d e f e c t , are displayed on a display device f o r
the yarndefectdetectedbytheyarndefectdetectingdevice. I n o t h e r
words, although non-removal of the yarn defect is i n d i c a t e d as the
25 determination information, the c l a s s i f i c a t i o n information may be
i n d i c a t i n g t h a t the display thickness of the yarn defect exceeds an
upper l i m i t value (upper l i m i t value of the display thickness t h a t
can t o l e r a t e non-removal of the yarn d e f e c t ) . Although removal of
the yarn defect is indicated as the determination information, the
30 c l a s s i f i c a t i o n information may be i n d i c a t i n g t h a t the display
thickness of the yarn defect does not exceed the upper l i m i t value.
That is, the determination information and the c l a s s i f i c a t i o n
information may c o n t r a d i c t each o t h e r .
It is an object o f t h e present invention t o provide a yarn defect
35 c l a s s i f y i n g device and a yarn winding machine capable of suppressing
contradiction from occurring between the determination information
i n d i c a t i n g whether or not the yarn defect has been removed, and the
c l a s s i f i c a t i o n information i n d i c a t i n g the display length and the
display thickness of the yarn d e f e c t .
5 A yarn defect c l a s s i f y i n g device used i n a yarn winding machine
including a yarn supplying device adapted t o supply a yarn, a winding
device adapted t o wind the yarn i n t o a package, and a yarn d e f e c t
removal device adapted t o remove a yarn defect of the yarn between
the yarn supplying device and the winding device, the yarn defect
10 c l a s s i f y i n g device comprises a yarn d e f e c t d e t e c t i n g device adapted
t o detect the yarn defect between the yarn supplying device and the
winding device; a removal determination section adapted t o c a l c u l a t e
a removal determination value for a s e t length of the yarn i n
accordance with a detected thickness of the yarn d e f e c t d e t e c t e d by
15 the yarn d e f e c t d e t e c t i n g device, and t o remove the yarn defect by
the yarn defect removal device when the removal determination value
exceeds a prescribed value; and a c a l c u l a t i n g s e c t i o n adapted t o
c a l c u l a t e a display thickness of the yarn defect and a d i s p l a y l e n g t h
of the yarn defect i n accordance with the d e t e c t e d t h i c k n e s s and a
20 d e t e c t e d l e n g t h of the yarn d e f e c t .
Ayarnwindingmachinecomprisesayarnsupplyingdeviceadapted
t o supply a yarn; a winding device adapted t o wind the yarn i n t o a
package; a yarn defect removal device adapted t o remove a yarn defect
of the yarn between the yarn supplying device and the winding device;
25 and the yarn defect c l a s s i f y i n g device.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a spinning u n i t , which is a yarn
windingmachine, accordingtooneembodiment o f t h e p r e s e n t invention;
30 FIG. 2 is a block diagram of a yarn d e f e c t d e t e c t i n g device and
a control device of the spinning u n i t of FIG. 1;
FIG. 3A and FIG. 3B are views i l l u s t r a t i n g a r e l a t i o n s h i p
between length and thickness of a yarn;
FIG. 4 is a display example i n a display device of the spinning
35 u n i t of FIG. 1;
FIG. 5 is a view i l l u s t r a t i n g p a t t e r n s switched according t o
the r e l a t i o n s h i p of a defectcalculatedlengthanda d e f e c t c a l c u l a t e d
thickness of a yarn defect;
FIG. 6Ato FIG. 6Careviews i l l u s t r a t i n g a relationshipbetween
5 length and thickness of the yarn;
FIG. 7A and FIG. 7B are views i l l u s t r a t i n g a r e l a t i o n s h i p
between length and thickness of the yarn; and
FIG. 8 is a block diagram of a yarn defect c l a s s i f y i n g device
of a spinning u n i t , which is a yarn winding machine, according t o
10 another embodiment of the p r e s e n t i n v e n t i o n .
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
A p r e f e r r e d embodiment of the present invention w i l l be
h e r e i n a f t e r described i n d e t a i l with reference t o the drawings. The
15 same reference numerals are denoted on the same or corresponding
portions throughout the drawings, and redundant d e s c r i p t i o n w i l l be
omitted.
As i l l u s t r a t e d i n FIG. 1, a s p i n n i n g u n i t (yarnwindingmachine)
1 is a device adapted t o produce a yarn Y and wind the yarn Y i n t o
20 a package P. The spinning u n i t 1 i n c l u d e s a d r a f t device ( y a r n
supplying device) 2, a spinning device (yarn supplying device) 3,
a yarn feeding device 4 , a yarn defect d e t e c t i n g device 5, a yarn
joining device (yarn defect removal device) 6, and a winding device
7 arranged i n order from upstream along a t r a v e l l i n g path of a s l i v e r
25 ( f i b e r bundle) S and the yarn Y.
Such spinning u n i t 1 is arranged i n p l u r a l s t o configure the
spinning machine. In t h i s case, the yarn joining device 6 can move
among the p l u r a l i t y of spinning u n i t s 1 t o perform the yarn joining
operation a t the spinning 1 where the yarn Y is c u t . That is, the
30 yarn joining device 6 is shared among the p l u r a l i t y of spinning u n i t s
1. However, the yarn joiningdevice 6maybearrangedineachspinning
u n i t 1.
The d r a f t device 2 i n c l u d e s a back r o l l e r p a i r 8, a t h i r d r o l l e r
p a i r 9, a middle r o l l e r p a i r 12 provided with apron b e l t s 11, and
35 a f r o n t r o l l e r p a i r 13. The d r a f t device 2 draws the s l i v e r S
accommodated i n a can 1 4 with each r o l l e r p a i r 8, 9, 12, and 13 t o
produce the f i b e r bundle F.
The spinning device 3 is a pneumatic spinning device adapted
t o produce the yarn Y by applying t w i s t t o the f i b e r bundle F with
5 a whirling airflow. More s p e c i f i c a l l y (not i l l u s t r a t e d ) , the
spinning device 3 has a spinning chamber, a f i b e r guiding s e c t i o n ,
a whirling airflow generating nozzle, and a hollow guide s h a f t body.
The f i b e r guiding section guides the f i b e r bundle F generated by the
d r a f t device 2 i n t o the spinning chamber. The whirling airflow
10 generating nozzle generates the whirling airflow i n the spinning
chamber t o reverse andwhirl the f i b e r e n d o f t h e f i b e r bundle Fguided
i n t o the spinning chamber. The hollow guide s h a f t body guides the
spun yarn Y from t h e i n s i d e of the spinning chamber t o outside the
spinning device 3.
15 The yarn feeding device 4 includes a delivery r o l l e r 15 and a
nip r o l l e r 16. The yarn feeding device 4 nips the yarn Y produced
by the spinning device 3 with a p a i r of r o l l e r s 15 and 16 t o feed
the yarn Y t o the winding device 7.
The yarn defect d e t e c t i n g device 5 is a device r e f e r r e d t o as
20 a yarn c l e a r e r , and is adapted t o d e t e c t t h e yarn defect of the
t r a v e l l i n g yarnybetweenthe spinning device 3 a n d t h e winding device
7. The yarn d e f e c t d e t e c t i n g device 5 has a f u n c t i o n of c u t t i n g the
yarn Y when the detected yarn defect meets a predetermined condition.
The yarn joining device 6 includes a s u c t i o n pipe 17, a suction
25 mouth (yarn defect removal device) 18, and a s p l i c e r 19. The suction
pipe 17 is swingably supported, and is adapted t o catch the yarn end
of the yarn Y from the spinning device 3 and guide the yarn Y t o the
s p l i c e r 19. The suction mouth 18 removes the yarn d e f e c t . The
suction mouth 18 is swingably supported, and is adapted t o catch the
30 yarn end of the yarn Y from the winding device 7 and t o guide the
yarn Y t o the s p l i c e r 19. The s p l i c e r 19 performs the yarn joining
o p e r a t i o n o n t h e yarnends guidedbythe s u c t i o n p i p e 1 7 andthe suction
mouth18. T h e y a r n Y f r o m t h e w i n d i n g d e v i c e 7 i n c l u d e s t h e y a r n d e f e c t .
When the suctionmouth18 sucks and c a t c h e s t h e yarnY fromthe winding
35 d e v i c e 7 , t h e y a r n d e f e c t i s t a k e n i n t o t h e s u c t i o n m o u t h 1 8 andremoved.
The s p l i c e r 19 performs the yarn joining operation on the yarn Y from
the winding device 7 i n which the yarn defect is removed, and on the
yarn Y from the spinning device 3 .
The winding device 7 is a device adapted t o wind the yarn Y i n t o
5 the package PI and i n c l u d e s a cradle arm 21, a winding drum 22, and
a t r a v e r s e device 23. The cradle arm 21 brings the surface of the
package P i n t o contact with the surface of the winding drum 22 a t
an appropriate pressure while r o t a t a b l y supporting the package P.
The winding drum 22 r o t a t e s the package P brought i n t o contact by
10 the cradle arm 2 1 . The t r a v e r s e device 23 t r a v e r s e s the yarn Y a t
a prescribed width with respect t o the package P being r o t a t e d by
thewindingdrum22. The s p i n n i n g u n i t l c a n w i n d n o t o n l y t h e c i r c u l a r
column shaped package P i l l u s t r a t e d i n F I G . 1, but can a l s o wind a
cone shapedpackage. The shape o f t h e package Pwoundbythe spinning
15 u n i t 1 is not p a r t i c u l a r l y limited.
As i l l u s t r a t e d i n FIG. 2, the yarn d e f e c t d e t e c t i n g device 5
i n c l u d e s a yarn defect d e t e c t i n g s e c t i o n 5a and a c u t t i n g s e c t i o n
5b. The yarn defect d e t e c t i n g s e c t i o n 5a is, f o r example, an o p t i c a l
or a capacitance sensor, and outputs a s i g n a l i n d i c a t i n g thickness
20 of the t r a v e l l i n g yarn Y t o a control device 24. The c u t t i n g s e c t i o n
5b c u t s t h e yarn Y when the control device 24 determines t h a t the
yarn defect should be removed on t h e b a s i s of t h e s i g n a l input from
the yarn defect d e t e c t i n g s e c t i o n 5a.
The control device 24 is a device f o r c o n t r o l l i n g the e n t i r e
25 spinning u n i t 1, and i n c l u d e s a c e n t r a l processing device 25, a Read
Only Memory (ROM) 26, a Random Access Memory (RAM) 27, and a hard
d i s c 28. A display device 31 and an input device 32 are connected
t o t h e c o n t r o l device 24. The display device 31 displays various
pieces of information. The input device 32 is, f o r example, an
30 operation button f o r the operator t o g i v e various i n s t r u c t i o n s t o
the spinning u n i t 1. The control device 24 may be arranged i n each
spinning u n i t 1, may be arranged one for every group configured by
a p l u r a l i t y of spinning u n i t s 1, or may be arranged one for a l l the
spinning u n i t s 1 arranged i n the spinning machine.
3 5 As i l l u s t r a t e d i n FIG. 3A, the control device 24 c a l c u l a t e s an
i n t e g r a t e d value A1 of the detected thickness of the yarn Y with
respect t o a s e t length LS of the yarn Y based on t h e s i g n a l input
from the yarn defect d e t e c t i n g s e c t i o n 5a. The s e t length LS is a
value s e t i n advance by the operator. The i n t e g r a t e d value A1 of the
5 detected thickness of the yarn Y with respect t o the s e t length LS
of the yarn Y corresponds t o a hatched region i n FIG. 3A. The control
device 24 causes the yarn joining device 6 t o remove the yarn defect
(removing function) i f the i n t e g r a t e d value A1 exceeds a prescribed
i n t e g r a t e d value A ( t h ) , and causes the yarn j o i n i n g device 6 not t o
10 remove the yarn defect and t o leave the yarn defect i f the i n t e g r a t e d
value A1 does not exceed a prescribed i n t e g r a t e d value A ( t h ) . The
control device 24 adopts the r e s u l t of determination of whether or
not t o remove the yarn defect based on the i n t e g r a t e d value A1 as
the determination information.
15 As i l l u s t r a t e d i n FIG. 3B, the control device 24 c a l c u l a t e s t h e
i n t e g r a t e d value of the d e t e c t e d t h i c k n e s s of the yarn defect as a
c a l c u l a t e d i n t e g r a t e d value A2 based on t h e s i g n a l input from the
yarn d e f e c t d e t e c t i n g s e c t i o n 5a, c a l c u l a t e s the detected length of
the yarn defect as a d e f e c t c a l c u l a t e d length LA, and c a l c u l a t e s the
20 d e t e c t e d t h i c k n e s s o f t h e yarn defect as a d e f e c t c a l c u l a t e d t h i c k n e s s
WA ( c a l c u l a t i n g f u n c t i o n ) . The control device 24 c a l c u l a t e s the
display length and the display thickness based on the c a l c u l a t e d
i n t e g r a t e d value A2, the defect c a l c u l a t e d length LA and the defect
c a l c u l a t e d t h i c k n e s s WA, a n d a d o p t s t h e display l e n g t h a n d t h e display
25 thickness as the c l a s s i f i c a t i o n information. The method of
c a l c u l a t i n g the display length and t h e d i s p l a y thickness w i l l be
d e s c r i b e d l a t e r . The l i n e s i n d i c a t i n g t h e d e t e c t e d t h i c k n e s s i n FIG.
3A and FIG. 3B are s i m i l a r l y i l l u s t r a t e d , and the i n t e g r a t e d value
Alandthe c a l c u l a t e d i n t e g r a t e d v a l u e A 2 a r e d i f f e r e n t l y i l l u s t r a t e d .
30 However, a c t u a l l y , t h e l i n e s i n d i c a t i n g the detected thickness
r e s p e c t i v e l y represent d i f f e r e n t thickness and the i n t e g r a t e d value
A1 and the c a l c u l a t e d i n t e g r a t e d value A2 are values s i m i l a r l y
i n t e g r a t e d based on the s e t length.
The c a l c u l a t e d i n t e g r a t e d value A2 is an i n t e g r a t e d value of
35 the detected thickness of the yarn Y i n a region where the detected
thickness of the yarn Y exceeds a prescribed t h i c k n e s s WS (normally,
a value g r e a t e r than or equal t o 100% and smaller t h a n or equal t o
125% of the average thickness WO of the yarn Y). Therefore, the
c a l c u l a t e d i n t e g r a t e d value A2 corresponds t o a hatched region i n
5 FIG. 3B. The defect c a l c u l a t e d length LA is a d e t e c t e d l e n g t h of the
yarn Y i n a region where the detected thickness of the yarn Y exceeds
the prescribed thickness W 1 ( e . g . , 165% of the average thickness WO
of the yarn Y) . The d e f e c t c a l c u l a t e d thickness WA is a maximum value
of the detected thickness of the yarn Y i n a range of the defect
10 c a l c u l a t e d length LA. In t h i s case, the d e t e c t e d t h i c k n e s s of the
yarn Y is a r a t i o of the thickness of the yarn Y with respect t o the
average thickness WO of the yarn Y i n a range i n which the detected
length of the yarn Y is s u f f i c i e n t l y long.
The control device 24 a s s o c i a t e s the determination information
15 i n d i c a t i n g whether or not the yarn defect has been removed ( i . e . ,
whether or not the i n t e g r a t e d value A1 exceeded the prescribed
i n t e g r a t e d value A ( t h ) ) , with the c l a s s i f i c a t i o n information
i n d i c a t i n g the display length and the display thickness of the yarn
d e f e c t , for each yarn d e f e c t , and s t o r e s the same i n the hard d i s c
20 28.
The operation of the spinning u n i t 1 when the i n t e g r a t e d value
A1 of the detected thickness of the yarn Y with respect t o the s e t
length LS of the yarn Y exceeds the prescribed i n t e g r a t e d value A ( t h )
i s a s follows. F i r s t , t h e c o n t r o l d e v i c e 2 4 c a u s e s t h e c u t t i n g s e c t i o n
25 5b of the yarn d e f e c t d e t e c t i n g device 5 t o cut the yarn Y. Then,
t h e c o n t r o l device 24 causes the yarn joining device 6 (suctionmouth
18) t o remove the yarn defect from the yarn end of the yarn Y cut
by the c u t t i n g section 5b, and t h e r e a f t e r , causes the yarn joining
device 6 ( s p l i c e r 19) t o perform the yarn joining operation of the
30 yarn ends. When the i n t e g r a t e d value A1 exceeds the prescribed
i n t e g r a t e d value A ( t h ) , the yarn joining device 6 thus removes the
yarn defect from the yarn Y between the spinning device 3 and the
winding device 7.
As i l l u s t r a t e d i n FIG. 4 , upon r e c e i v i n g a r e q u e s t i n s t r u c t i o n
35 from the operator through the input device 32, the control device
24 causes t h e d i s p l a y device 31 t o display a two-dimensional f i e l d
havingthe yarn defect length on a horizontal axis and the y a r n d e f e c t
thickness on a v e r t i c a l axis (displaying f u n c t i o n ) . In t h i s case,
t h e c o n t r o l device 24 reads out a c l e a r i n g l i m i t CL from the hard
5 d i s c 28, and displays the same on the two-dimensional f i e l d as a l i n e .
The c l e a r i n g l i m i t C L i s basedon the s e t length LS s e t by the operator
and the removed thickness.
The c l e a r i n g l i m i t CL of FIG. 4 is an example of when the s e t
length LS i s s e t t o 1.5 cm and the removed thickness is s e t t o 200%
10 by the operator. In t h i s case, in the range i n which the s e t length
LSis betweenl.O cmand1.5 cm, the c l e a r i n g l i m i t C L i s s e t t o s a t i s f y
"set thickness WB = prescribed integrated value A(th) / s e t length
LS". I n t h e range i n which the s e t length LS is smaller than or equal
t o 1 . 0 cm, t h e c l e a r i n g l i m i t CL is s e t t o s a t i s f y "set thickness
15 WB= 280%"to remove a nep as the yarn defect of which the s e t thickness
WB is g r e a t e r than or equal t o 280%. I n t h e range i n which the s e t
length LS is g r e a t e r than or equal t o 1.5 cm, the c l e a r i n g l i m i t CL
is s e t t o s a t i s f y "set thickness WB = 200%" t o remove a slub as the
yarn defect of which the s e t thickness WB is g r e a t e r than or equal
20 t o 200%.
Thus, the y a r n d e f e c t h a v i n g t h e yarndefect l e n g t h a n d t h e yarn
defect thickness of a point positioned i n a region below the c l e a r i n g
l i m i t CL i n the two-dimensional f i e l d remains i n the yarn Y without
being removed from the yarn Y. The yarn defect having the yarn defect
25 length and the yarn defect thickness of a p o i n t p o s i t i o n e d i n a region
above t h e c l e a r i n g l i m i t CL i n the two-dimensional f i e l d is removed
from the yarn Y.
The control device 24 reads out the determination information
and the c l a s s i f i c a t i o n information from the hard d i s c 28 f o r each
30 yarn defect, and displays the same on the two-dimensional f i e l d as
a dot. The control device 24 determines the d i s p l a y l e n g t h and the
display thickness t o be displayed a s t h e c l a s s i f i c a t i o n information
of the yarn defect i n the following manner.
That is, as i l l u s t r a t e d i n FIG. 5, when the d e f e c t c a l c u l a t e d
35 length LA is smaller than a prescribed l e n g t h L ( t h ) and the defect
calculated thickness W A i s g r e a t e r t h a n a p r e s c r i b e d t h i c k n e s s W(th),
t h e c o n t r o l device 24 determines t h e d i s p l a y length and t h e d i s p l a y
t h i c k n e s s t o b e d i s p l a y e d a s t h e c l a s s i f i c a t i o n i n f o r m a t i o n i n p a t t e r n
A. WhenthedefectcalculatedlengthLAis smallerthantheprescribed
5 length L ( t h ) and t h e d e f e c t c a l c u l a t e d thickness WA is smaller than
the prescribed thickness W(th), the control device 24 determines the
display length and the display thickness t o be displayed as the
c l a s s i f i c a t i o n information in p a t t e r n B. When the d e f e c t c a l c u l a t e d
length LA is g r e a t e r than the prescribed l e n g t h L ( t h ) , t h e c o n t r o l
10 device 24 determines the display length and t h e d i s p l a y thickness
t o be displayed as the c l a s s i f i c a t i o n information i n p a t t e r n C
regardless of the s i z e of the d e f e c t c a l c u l a t e d thickness WA. The
prescribed l e n g t h L ( t h ) is a value g r e a t e r than or equal t o 5 mm and
smaller than or equal t o 30 mm. The prescribed thickness W(th) is
15 a value g r e a t e r than or equal t o 150% and smaller than or equal t o
200% of the average thickness WO of the yarn Y.
More s p e c i f i c a l l y , as i l l u s t r a t e d i n FIG. 6A, when the defect
calculated length LA is smaller than the prescribed l e n g t h L ( t h ) and
the d e f e c t c a l c u l a t e d thickness WA is g r e a t e r than the prescribed
20 thickness W(th), a "changing p r o f i l e of the thickness of the yarn
defect with respect t o the length of the yarn defect" i n the yarn
defect is l i k e l y t o become t r i a n g u l a r . In t h i s case, the control
device 24 adopts the "defect calculated length LA" as the display
length a n d a d o p t s t h e "defect calculated thickness WA" as t h e d i s p l a y
25 thickness for the c l a s s i f i c a t i o n information of the yarn d e f e c t .
As i l l u s t r a t e d i n FIG. 6B, when the d e f e c t c a l c u l a t e d l e n g t h
LA is smaller than the prescribed l e n g t h L ( t h ) and the defect
c a l c u l a t e d t h i c k n e s s W A i s smallerthantheprescribedthicknessW(th),
the "changingprofile o f t h e thickness o f t h e yarn defect with respect
30 t o the length of the yarn defect" i n the yarn defect is l i k e l y t o
become rectangular. In t h i s case, the control device 24 adopts the
"value obtained by dividing the calculated i n t e g r a t e d value A2 by
the d e f e c t c a l c u l a t e d thickness WA" as t h e d i s p l a y length and adopts
the "defect calculated thickness WA" as the display thickness for
35 the c l a s s i f i c a t i o n information of the yarn d e f e c t .
As illustrated in FIG. 6C, when the defect calculated length
LA is g r e a t e r t h a n t h e p r e s c r i b e d l e n g t h L ( t h ) , the "changingprofile
of the thickness of the yarn defect with respect to the length of
the yarn defect" in the yarn defect is likely to become horizontally
5 long and elliptical although a portion where the thickness of the
yarn defect becomes partially large tends to appear. In this case,
the control device 24 adopts the "defect calculated length LA" as
the display length and adopts the "value W (avg) obtained by dividing
the calculated integrated value A2 by the defect calculated length
10 LA" as the display thickness for the classification information of
the yarn defect.
The defect calculated length LA and the defect calculated
thickness WA of when determining the display length and the display
thickness to be displayed as the classification information of the
15 yarn defect may be values multiplied with a defect shape coefficient
according to the shape of the yarn defect. This is because, since
the shape of the yarn defect may be an ellipse or a triangle, the
value obtained by multiplying the display length and the display
thickness may not correspond to the integrated value Al. The defect
20 shape coefficient is a value smaller than one and is, for example,
7 / 8 .
The control device 24 displays, as a dot, the classification
information determined as above and the determination information
indicating whether or not the yarn defect has been removed on the
25 two-dimensional field. As illustrated in FIG. 4, each yarn defect
is displayed as a black dot or a white dot. The display length and
the display thickness (classification information) are shown by the
position of the dot. The black dot indicates that the yarn defect
has been removed (determination information) . The white dot
30 indicates that the yarn defect has not been removed (determination
information).
The operator then can check the distribution state of the yarn
defect, and change the setting of the clearing limit CL according
to the distribution state. For example, in FIG. 4, 50 times is
35 displayed at the upper right of the display device 31 to indicate
the number of times the yarn defect has been removed. When the
operator determines t o reduce the number of times from a standpoint
of enhancing the productivity of the yarn Y, the operator can change
the c l e a r i n g l i m i t so t h a t the c l e a r i n g l i m i t CL moves t o the upper
5 side i n the two-dimensional f i e l d . When the operator determines t o
increase the number of times from the standpoint of improving the
q u a l i t y of the yarn Y, the operator can change t h e c l e a r i n g l i m i t
so t h a t the c l e a r i n g l i m i t CL moves t o the lower s i d e i n the
two-dimensional f i e l d . In t h i s case, since the number of times the
10 yarn defect is removed is changed t o the number of times when the
changed c l e a r i n g l i m i t CL is applied, the operator can a d j u s t the
c l e a r i n g l i m i t CL while referencing such number of times.
As describedabove, i n the s p i n n i n g u n i t 1, t h e i n t e g r a t e d v a l u e
A1 of the detected thickness W of the yarn Y with respect t o the s e t
15 length LS of the yarn Y is c a l c u l a t e d , and the yarn defect is removed
when the i n t e g r a t e d value A1 exceeds the p r e s c r i b e d i n t e g r a t e d value
A ( t h ) . I f the d e f e c t c a l c u l a t e d length LA is smaller t h a n the
p r e s c r i b e d l e n g t h L ( t h ) , the d e f e c t c a l c u l a t e d thickness WA is
displayed as the display thickness with the determination information
20 i n d i c a t i n g whether or not the yarn defect has been removed on the
display device 31. I f the defect c a l c u l a t e d length L A i s g r e a t e r t h a n
the prescribed length L ( t h ) , the value W (avg) obtained by dividing
the c a l c u l a t e d i n t e g r a t e d value A2 by the d e f e c t c a l c u l a t e d length
LA is displayed as the display thickness with the determination
25 i n f o r m a t i o n i n d i c a t i n g w h e t h e r o r n o t t h e y a r n d e f e c t h a s b e e n r e m o v e d
on the display device 31. The d e f e c t c a l c u l a t e d thickness WA of the
"portion where the thickness of the yarn defect becomes p a r t i a l l y
large" t h a t is l i k e l y t o appear when the d e f e c t c a l c u l a t e d l e n g t h
LA becomes g r e a t e r than the p r e s c r i b e d l e n g t h L ( t h ) can be prevented
30 from being displayed a s t h e display thickness on the display device
31.
I f the d e f e c t c a l c u l a t e d thickness WA of the "portion where the
thickness of the yarn defect becomes p a r t i a l l y large" is adopted as
the display thickness, the white dot correspondingtothenon-removed
35 yarn defect of which the i n t e g r a t e d value A1 did not exceed the
p r e s c r i b e d i n t e g r a t e d v a l u e A ( t h ) maybe d i s p l a y e d i n t h e region above
the c l e a r i n g l i m i t CL i n the two-dimensional f i e l d i n FIG. 4 .
Accordingtothe s p i n n i n g u n i t l , s u c h c o n t r a d i c t i o n c a n b e suppressed
from occurring between the determination information i n d i c a t i n g
5 whetherornot the yarndefecthasbeenremoved, a n d t h e c l a s s i f i c a t i o n
information i n d i c a t i n g the d i s p l a y l e n g t h and the display thickness
of the yarn d e f e c t .
I f the prescribed length L ( t h ) is a value g r e a t e r than or equal
t o 5 mm and smaller than or equal t o 30 mm, the defect c a l c u l a t e d
10 thickness WA of the "portion where the thickness of the yarn defect
becomes p a r t i a l l y large" t h a t is l i k e l y t o appear when the defect
length L becomes large is more e f f e c t i v e l y prevented from being
displayed on the display device 31 as the display thickness.
In the spinning unit 1, when the defect c a l c u l a t e d length LA
15 is g r e a t e r than the prescribed length L ( t h ) , the d e f e c t c a l c u l a t e d
length LA is displayed as the display length with the determination
informationindicatingwhetherornottheyarndefecthasbeenremoved,
on the display device 31. Thus, when the d e f e c t c a l c u l a t e d length
LA is g r e a t e r than the p r e s c r i b e d l e n g t h L ( t h ) , the c o n t r a d i c t i o n
20 can be suppressed from occurring between the display length of the
yarn defect and the determination information.
In the spinning unit 1, when the defect c a l c u l a t e d length LA
is smaller than the prescribed length L ( t h ) , i f the d e f e c t c a l c u l a t e d
thickness WA is g r e a t e r than the p r e s c r i b e d t h i c k n e s s W(th), the
25 d e f e c t c a l c u l a t e d length LA is displayed a s t h e display length with
the determination information i n d i c a t i n g whether or not the yarn
defect has been removed, on the display device 31. When the defect
c a l c u l a t e d length LA is smaller t h a n the p r e s c r i b e d l e n g t h L ( t h ) ,
i f the d e f e c t c a l c u l a t e d thickness WA is smaller than the prescribed
30 thickness W(th), the value obtained by dividing the c a l c u l a t e d
i n t e g r a t e d v a l u e A 2 b y t h e d e f e c t c a l c u l a t e d t h i c k n e s s W A i s displayed
as the display length with the determination information i n d i c a t i n g
whether or not the yarn defect has been removed, on the display device
31. Thus, when the defect c a l c u l a t e d length LA is smaller t h a n the
35 p r e s c r i b e d l e n g t h L ( t h ) , the contradiction can be suppressed from
occurring between the display length of the yarn defect and the
determination information.
I f the prescribed thickness W(th) is a value g r e a t e r than or
equalto150% a n d s m a l l e r t h a n o r e q u a l t o 2 0 0 % o f t h e a v e r a g e thickness
5 WO of the yarn Y, when the defect c a l c u l a t e d length LA is smaller
than the p r e s c r i b e d l e n g t h L ( t h ) , the c o n t r a d i c t i o n can be more
e f f e c t i v e l y suppressed from occurring between the display length of
the yarn defect and the determination information.
Therefore, according t o the spinning u n i t 1, the c o n t r a d i c t i o n
10 canbe suppressed fromoccurringbetweenthe a c t u a l l y m e a s u r e d l e n g t h
o f t h e removedyarndefectandthedisplaylengthofthe c l a s s i f i c a t i o n
information, orbetweenthe actuallymeasuredthickness o f t h e removed
yarn defect and the display thickness of the c l a s s i f i c a t i o n
information.
15 The control device 24 may change the p r e s c r i b e d t h i c k n e s s W 1 ,
which is a threshold value for measuring the d e f e c t c a l c u l a t e d length
LA, according t o t h e d e f e c t c a l c u l a t e d t h i c k n e s s WAofthe y a r n d e f e c t .
More s p e c i f i c a l l y , when the d e f e c t c a l c u l a t e d thickness WA of the
yarn defect exceeds the prescribed thickness W2 (> prescribed
20 thickness W 1 ) as i l l u s t r a t e d i n FIG. 7A, the control device 24 may
increase the prescribed thickness W 1 , which is a threshold value for
measuring the defect c a l c u l a t e d length LA a s i l l u s t r a t e d i n FIG. 7B.
Accordingly, the contradiction can be suppressed from occurring
between the d i s p l a y l e n g t h of the yarn defect and the determination
25 information.
One embodimentofthepresentinventionhasbeendescribedabove,
but the present invention is not limited t o the embodiment described
above. For example, the yarn winding machine according t o an
embodiment of the p r e s e n t invention is not limited t o the spinning
30 u n i t configuring the spinning machine, and may be other yarn winding
machines such as a winder u n i t configuring an automatic winder.
In the spinning u n i t 1 described above, the yarn supplying
device f o r supplying the yarn is configured by the d r a f t device 2
and the spinning device 3, but the yarn supplying device according
35 t o an embodiment of the present invention may be other yarn supplying
devices such as a device configured t o supply the yarn from a bobbin
around which the yarn is wound.
The yarn winding machine according t o an embodiment of the
present invention may include a display device, as with the spinning
5 u n i t 1 described above, or may be connected with a display device
of a personal computer, and the l i k e .
I f the yarn winding machine according t o an embodiment of the
present invention is a spinning u n i t , t h e yarn is not limited t o being
pulled out from the spinning device with the delivery r o l l e r and the
10 nip r o l l e r , and the yarn may be p u l l e d o u t from a spinning device
by a yarn accumulating r o l l e r adaptedto accumulate yarn a t downstream
o f t h e spinningdevice. Furthermore, when the yarn defect is detected,
the yarn may be cut with a c u t t e r other than t h e c u t t i n g s e c t i o n of
the yarndefectdetectingdevice ormaybe cut by stopping the whirling
15 airflow i n the spinning device.
The control device 24 and the yarn d e f e c t d e t e c t i n g device 5
are described t o be i n d i v i d u a l l y configured, but may be i n t e g r a l l y
configured.
The hard d i s c 28 may be a l a r g e - c a p a c i t y RAM. The hard d i s c
20 28 may be mounted on the display device 31, and information may be
stored i n or read out from the hard d i s c 28 through communication
with t h e c o n t r o l device 24.
The d e f e c t c a l c u l a t e d thickness WA has been described as a
maximum value of the detected thickness of the yarn Y corresponding
25 t o the d e f e c t c a l c u l a t e d length LA, but may be an average value of
a predetermined range as a value corresponding t o the maximum value.
The predetermined range is d e s i r a b l y a range of g r e a t e r than or equal
t o 2 mm and smaller t h a n or equal t o 10 mm, which is the length of
an extent t h a t the thickness of the yarn Y can be v i s u a l l y determined.
30 The switch among t h e p a t t e r n A, t h e p a t t e r n B, and t h e p a t t e r n
C i n the embodiment described above is merely an example, and the
switch among t h e p a t t e r n A, t h e p a t t e r n B, and the p a t t e r n C may be
appropriately changedto determine the display length and the display
thickness t o be displayed as the c l a s s i f i c a t i o n information. For
35 example, when the defect c a l c u l a t e d length LA is smaller t h a n the
p r e s c r i b e d l e n g t h L ( t h ) , the display length andthe display thickness
t o be displayed as the c l a s s i f i c a t i o n information may be determined
by t h e p a t t e r n A regardless of the s i z e of the d e f e c t c a l c u l a t e d
thickness WA. Alternatively, the display length and the display
5 thickness to be displayed as the classification information may be
determined by the pattern C in all cases.
In the embodiment described above, the yarn defect classifying
device is configured at least by the yarn defect detecting device
5 and the control device 24. In the embodiment described above, the
10 control device 24 includes the removal determination section and the
calculating section. In the embodiment described above, the
integrated value A1 corresponds to a removal determination value,
the defect calculated length LA corresponds to the detected length,
and the defect calculated thickness WA corresponds to the detected
15 thickness.
Next, other embodiments of the yarn winding machine will be
described. As illustrated in FIG. 8, in the yarn defect classifying
device 100 of the present embodiment, a control device 24B includes
a central processing device 25B in addition to the central processing
20 device 25. The central processing device 25B includes a first
determination channel SON, a second determination channel 50S, and
a third determination channel 50L to execute the determination on
whether or not to remove the yarn defect, and the calculation of the
display length and the display thickness according to the type of
25 yarn defect.
The first determination channel 50N determines the yarn defect
(nep) that is short and thick, for example. For instance, the yarn
defect having a length of smaller than or equal to 10 mm can be
classified as the nep. The first determination channel SON includes
30 a first thickness detecting section 51N, a first length detecting
section 52N, a first removal determination section 53N, and a first
calculating section 54N.
The seconddetermination channel50S determines the yarndefect
(slub) of a type that is longer than the nep and has a change in the
35 thickness ofthe yarn, which ismore gradual than the nep, for example.
For instance, the yarn defect having a l e n g t h of g r e a t e r than 10 mm
and smaller than or equal t o 80 mm can be c l a s s i f i e d as the slub.
The second determination channel 50s includes a second thickness
d e t e c t i n g s e c t i o n 51S, a secondlengthdetecting section 52S, a second
5 removal determination section 53S, and a second c a l c u l a t i n g s e c t i o n
54s.
The t h i r d determination channel 50L determines the yarn defect
(long) of a type longer than t h e s l u b , for example. For instance,
the yarndefecthavingalengthofgreaterthan 80mmcanbe c l a s s i f i e d
10 as the long. The t h i r d determination channel 50L includes a t h i r d
thickness d e t e c t i n g s e c t i o n 51L, a t h i r d length d e t e c t i n g s e c t i o n
52L, a t h i r d removal determination section 53L, and a t h i r d
c a l c u l a t i n g s e c t i o n 54L.
Each of the f i r s t t o t h i r d thickness detecting s e c t i o n s 51N,
15 51S, and 51L d e t e c t s t h e thickness (detected thickness) of the yarn
Y a t an i n t e r v a l of the yarn length of 1 mm, for example, based on
the information from the yarn defect d e t e c t i n g device 5 . Each of the
f i r s t t o t h i r d length d e t e c t i n g s e c t i o n s 52N, 52S, and 52L d e t e c t s
the length (detected length) of the yarn defect based on the
20 information from the yarn d e f e c t d e t e c t i n g device 5. The detected
length can be detected in a s i m i l a r manner as the above-described
d e f e c t c a l c u l a t e d length LA, for example.
The f i r s t removal determination section 53N c a l c u l a t e s the
removal determination value An with respect t o the prescribed s e t
25 length dn based on the detected thickness from the f i r s t thickness
d e t e c t i n g section 51N. The removal determination value An is a value
in which t h e d e t e c t e d thicknesses of the yarn defect are i n t e g r a t e d
a t an i n t e r v a l of the yarn length of 1 mm a t a prescribed s e t length
dn, for example. The s e t l e n g t h d n c a n b e settoabout2mmr f o r example.
30 Whenthe removaldeterminationvalueAnexceedsaprescribedthreshold
value Nth, the f i r s t removal determination section 53N determines
t o have the yarn joining device 6 remove the yarn d e f e c t . Such
c a l c u l a t i o n anddetermination are r e p e a t e d a t an i n t e r v a l o f t h e yarn
length of 1 mm, for example.
3 5 When the f i r s t removal determination section 53N determines
whether or not to remove the yarndefect, the first calculating section
54N calculates the display thickness and the display length of the
yarn defect. The first calculating section 54N calculates the
maximum value of the detected thickness as a display thickness, and
5 calculates the length of the yarn defect at the thickness of the value
of a prescribed percentage of the maximum value of the detected
thickness as the display length. The maximum value of the detected
thickness is the maximum value of the detected thickness in one
detected yarn defect (similarly hereinafter). The prescribed
10 percentage is, forexample, 0.5 (i.e., in this case, the display length
is half value full width in the yarn defect). The prescribed
percentage may be other than 0.5, and may be for example, 0.6. The
first determination channel 50N transmits the calculated display
length and the display thickness as the classification information
15 with the determinationinformationindicatingwhether or not the yarn
defect has been removed to the display device 31.
The second removal determination section 53s calculates the
removal determination value As with respect to the prescribed set
length ds based on the detected thickness from the second thickness
20 detecting section 51s. The removal determination value As is a value
in which the detected thicknesses of the yarn defect are integrated
at an interval of the yarn length of 1 mm at a prescribed set length
ds, for example. The set length ds can be set to about 20 mm, for
example. When the removal determination value As exceeds the
25 prescribed threshold value Sth, the second removal determination
section 53s determines to have the yarn joining device 6 remove the
yarn defect. Such calculation and determination are repeated at an
interval of the yarn length of 1 mm, for example.
When the second removal determination section 53s determines
30 whether or not to remove the yarn defect, the second calculating
section 54s calculates the display thickness and the display length
of the yarn defect. The second calculating section 54s calculates
the maximum value ofthe detectedthickness as the display thickness,
and calculates a value obtainedbydividingthe removal determination
35 value A2 by the maximum value of the detected thickness as the display
length. The second c a l c u l a t i n g section 54s executes t h e c a l c u l a t i o n
usingmovingaverage. The seconddeterminationchannel50Stransmits1
t o t h e d i s p l a y d e v i c e 31, t h e c a l c u l a t e d d i s p l a y l e n g t h a n d t h e display
thickness as the c l a s s i f i c a t i o n information with the determination
5 information i n d i c a t i n g whether or not the yarn defect has been
removed.
The t h i r d removal determination section 53L c a l c u l a t e s t h e
removal determination value A1 with respect t o the prescribed s e t
length d l based on the detected thickness from the t h i r d thickness
10 d e t e c t i n g s e c t i o n 51L. The removal determination value A1 is a value
calculated by weighted average of t h e d e t e c t e d thickness of the yarn
defect a t the prescribed s e t length d l , for example. I n o t h e r words,
A1 is calculated with the following equation (1).
A l k = [Alk-1. (dl-1) ' W k ' l] / d l - (1)
15 A l k is the removal determination value calculated t h i s time.
A l k - l i s t h e removal determinationvalue c a l c u l a t e d t h e previous time.
Wk is the detected thickness detected t h i s time.
The amount of information t o be stored i n the RAM 27 can be
reduced and the load of the RAM 27 can be reduced by c a l c u l a t i n g the
20 removal determination value A1 by weighted average. The removal
determination value A1 may be a value obtained by i n t e g r a t i n g the
detected thicknesses of the yarn defect a t an i n t e r v a l of the yarn
length of 1 mm a t the prescribed s e t length d l . The removal
determination values An and As maybe calculatedbyweightedaverage.
25 The s e t length d l can be s e t t o about 120 mm, f o r example. When the
removaldeterminationvalueAlexceedstheprescribedthresholdvalue
Lth, the t h i r d removal determination section 53L determines t o cause
the yarn joining device 6 t o remove the yarn d e f e c t . The c a l c u l a t i o n
and determination are repeated a t an i n t e r v a l of the yarn length of
30 1 mm, f o r example.
When the t h i r d removal determination section 53L determines
w h e t h e r o r n o t t o r e m o v e t h e y a r n d e f e c t , t h e t h i r d c a l c u l a t i n g s e c t i o n
54L c a l c u l a t e s t h e display thickness and t h e d i s p l a y length of the
yarn d e f e c t . The t h i r d c a l c u l a t i n g s e c t i o n 54L c a l c u l a t e s the value
35 obtained by dividing the removal determination value A1 by the
d e t e c t e d l e n g t h as the display thickness, and c a l c u l a t e s t h e detected
length as the display length. The t h i r d determination channel 50L
transmits, t o the display device 31, the calculated display length
and the display thickness as the c l a s s i f i c a t i o n information with the
5 determination information i n d i c a t i n g whether or not the yarn defect
has been removed.
When one of the f i r s t removal determination section 53N, the
second removal determination section 53S, and the t h i r d removal
determination section 53L determines t o remove the yarn d e f e c t , the
10 c u t t i n g section 5b cuts the yarn Y. The control device 24 stops the
d r a f t i n g operation of the d r a f t device 2, the spinning operation of
the spinningdevice 3, a n d t h e w i n d i n g o p e r a t i o n o f t h e w i n d i n g device
7. The control device 24 causes the suction mouth 18 t o catch the
yarn end of the package P and guide the yarn end t o the s p l i c e r 1 9 .
15 A t the same time as or temporally before or a f t e r the catching and
guiding of the yarn end by the suction mouth 18, the control device
24 resumes t h e d r a f t i n g operation of the d r a f t device 2 and the
spinning operation of the spinning device 3, and causes the suction
pipe 17 t o catch the yarn Y spun out from the spinning device 3 and
20 guide the yarn Y t o the s p l i c e r 19. The s p l i c e r 19 performs the yarn
j o i n i n g o p e r a t i o n . The control device 24 causes the winding device
7 t o r o t a t e the package P i n the winding d i r e c t i o n . The winding of
the package P is thereby resumed.
In the yarn defect c l a s s i f y i n g device 100 and the yarn winding
25 machine including the same according t o the present embodiment, the
removal determination values An, As, and A1 with respect t o the s e t
lengths dn, ds, and d l of the yarn are r e s p e c t i v e l y c a l c u l a t e d based
on the detected thickness of the yarn d e f e c t . When the removal
determination value An exceeds the prescribed value Nth, when the
30 removal determination value As exceeds the prescribed value S t h , or
when the removal determination value Alexceeds the prescribed value
Lth, determination is made t o remove the yarn d e f e c t . The display
thickness and the display length of the yarn defect are c a l c u l a t e d
based on the detected thickness of the yarn defect and the detected
35 length of the yarn d e f e c t . Therefore, according t o the yarn defect
c l a s s i f y i n g device 100, contradiction can be suppressed from
occurring between the determination information i n d i c a t i n g whether
or not the yarn defect has been removed, and the display length and
the display thickness of the yarn d e f e c t .
5 The f i r s t t o t h i r d removal determination s e c t i o n s 53N, 53S, and
53L are provided as the removal determination s e c t i o n , and the f i r s t
t o t h i r d c a l c u l a t i n g s e c t i o n s 54N, 54S, and 54L are provided as the
c a l c u l a t i n g s e c t i o n . The f i r s t t o t h i r d removal determination
s e c t i o n s 53N, 53S, and53Lare s e t w i t h d i f f e r e n t set length saccording
10 t o the type of yarn d e f e c t . Therefore, the display thickness and the
display length can be appropriately c a l c u l a t e d according t o the type
of yarn d e f e c t .
The f i r s t c a l c u l a t i n g s e c t i o n 54N c a l c u l a t e s t h e maximum value
of the detected thickness as the display thickness and c a l c u l a t e s
15 the length of the yarn defect a t the thickness of the value of a
prescribed percentage of the maximum value of the d e t e c t e d t h i c k n e s s
as the display length. The c a l c u l a t i o n performed by the f i r s t
c a l c u l a t i n g s e c t i o n 54N can s u i t a b l y suppress c o n t r a d i c t i o n from
occurring i n the determination information and the c l a s s i f i c a t i o n
20 information i n d i c a t i n g the d i s p l a y l e n g t h and the display thickness
of the yarn d e f e c t , with respect t o the r e l a t i v e l y s h o r t yarn defect
such as the nep, for example.
The second c a l c u l a t i n g s e c t i o n 54s c a l c u l a t e s themaximum value
of the detected thickness as the d i s p l a y t h i c k n e s s and c a l c u l a t e s
25 the value obtained by dividing the removal determination value As
by the maximum value of the detected thickness as the display length.
The c a l c u l a t i o n performed by the second c a l c u l a t i n g s e c t i o n 54s can
s u i t a b l y suppress contradiction from occurring i n the determination
informationandtheclassificationinformationindicatingthedisplay
30 length and the display thickness of the yarn d e f e c t , with respect
t o the yarn defect having a moderate length such as the slub, for
example.
The t h i r d c a l c u l a t i n g s e c t i o n 5 4 L c a l c u l a t e s t h e v a l u e o b t a i n e d
by d i v i d i n g t h e removal determinationvalue A l b y t h e d e t e c t e d l e n g t h
35 a s t h e display thickness and c a l c u l a t e s the detected length a s t h e
display length. The c a l c u l a t i o n performed by the t h i r d c a l c u l a t i n g
section 54L can suitably suppress contradiction from occurring in
the determination information and the classification information
i n d i c a t i n g t h e d i s p l a y length and the display thickness of the yarn
5 defect, with respect t o the r e l a t i v e l y long yarn defect such as the
long, f o r example.
The yarn defect c l a s s i f y i n g device 100 f u r t h e r includes the
display device 31 for displaying the determination information
i n d i c a t i n g whether or not the yarn defect has been removed, and the
10 display length and the display thickness. Therefore, the
r e l a t i o n s h i p between the determination information, and the display
length and the display thickness can be v i s u a l l y recognized.
The f i r s t t o t h i r d removal determination s e c t i o n s 53N, 53S, and
53L a l l do not need t o be provided, and a t l e a s t one of the f i r s t
15 t o t h i r d removal determination sections 53N, 53S, and 53L may be
provided. The f i r s t t o t h i r d c a l c u l a t i n g sections 54N. 54S, and 54L
a l l do not need t o be provided, and a t l e a s t one of the f i r s t t o t h i r d
c a l c u l a t i n g sections 54N, 54S, and 54L may be provided i n
correspondence with the removal determination s e c t i o n . I n o t h e r
20 words, the yarn defect c l a s s i f y i n g device 100 may execute the
determination on whether or not t o remove the yarn d e f e c t , and the
c a l c u l a t i o n of the display length and the display thickness for a
s p e c i f i c type of y a r n d e f e c t . I n a d d i t i o n t o a t l e a s t one o f t h e f i r s t
t o t h i r d removal determination sections 53N, 53S, and 53L, and a t
25 l e a s t one of the f i r s t t o t h i r d c a l c u l a t i n g s e c t i o n s 54N, 54S, and
54L, the removal determination section and t h e c a l c u l a t i n g s e c t i o n
for another type of yarn defect may be provided.
The f i r s t t o t h i r d thickness d e t e c t i n g sections 51N, 51S, and
51L, the f i r s t t o t h i r d length detecting s e c t i o n s 52N, 52S, and 52L,
30 the f i r s t t o t h i r d removal determination sections 53N, 53S, and 53L,
and the f i r s t t o t h i r d c a l c u l a t i n g sections 54N, 54S, and 54L may
be configured with software or may be configured with hardware. The
control device f o r t h e yarndefectdetectingdevice 5, a n d t h e control
device for another element of the spinning unit 1 other than the yarn
35 defect d e t e c t i n g device 5 may be separately provided.
The yarn winding machine according t o an embodiment of the
present invention i n c l u d e s a yarn supplying device a d a p t e d t o supply
a yarn, a winding device adapted t o wind the yarn i n t o a package,
a yarn defect detecting device adapted t o d e t e c t t h e yarn defect
5 betweentheyarnsupplyingdeviceandthewindingdevice, a y a r n d e f e c t
removal device adapted t o remove a yarn defect of the yarn between
the yarnsupplyingdeviceandthewindingdevice, a n d a c o n t r o l d e v i c e .
The control device has a removing f u n c t i o n , a c a l c u l a t i n g function,
and a display function. The removing function is a function of
10 c a l c u l a t i n g t h e i n t e g r a t e d value of the thickness of the yarn with
respect t o the s e t length of the yarn for the yarn d e f e c t d e t e c t e d
by the yarn d e f e c t d e t e c t i n g device, and causing the yarn defect
removal device t o remove the yarn defect when the i n t e g r a t e d value
exceeds the p r e s c r i b e d . i n t e g r a t e d value. The c a l c u l a t i n g function
15 is a f u n c t i o n of c a l c u l a t i n g the i n t e g r a t e d value of the thickness
of the yarn of the yarn defect as the c a l c u l a t e d i n t e g r a t e d value,
c a l c u l a t i n g the length of the yarn defect a s t h e d e f e c t c a l c u l a t e d
length, and c a l c u l a t i n g the thickness o f t h e yarn defect as t h e d e f e c t
c a l c u l a t e d thickness. The display function is a f u n c t i o n of causing
20 the display device t o display the d i s p l a y l e n g t h and the display
thickness, whichareobtainedbasedonthe calculatedintegratedvalue,
the d e f e c t c a l c u l a t e d length, and the defect c a l c u l a t e d thickness,
a s t h e c l a s s i f i c a t i o n information along with the determination
information i n d i c a t i n g whether or not the yarn defect has been
25 removed.
In such a yarn winding machine, the i n t e g r a t e d value of the
thickness of the yarn with respect t o the s e t length of the yarn is
c a l c u l a t e d , and the yarn defect is removed when the i n t e g r a t e d value
exceedstheprescribedintegratedvalue. T h e i n t e g r a t e d v a l u e o f t h e
30 thickness o f t h e y a r n o f t h e y a r n d e f e c t , the length o f t h e y a r n d e f e c t ,
and the thickness of the yarn defect are each c a l c u l a t e d as a
c a l c u l a t e d value, and t h e d i s p l a y length and the display thickness
obtained based on such c a l c u l a t e d values are displayed on the display
device a s t h e c l a s s i f i c a t i o n information. Therefore, according t o
35 the yarn winding machine, the contradiction can be suppressed from
occurring i n the determination information i n d i c a t i n g whether or not
the yarn defect has been removed, and the c l a s s i f i c a t i o n information
i n d i c a t i n g t h e d i s p l a y length and the display thickness of the yarn
d e f e c t .
5 The display functionmaybe a f u n c t i o n of d i s p l a y i n g t h e defect
c a l c u l a t e d length as the display length and the value obtained by
dividing the c a l c u l a t e d i n t e g r a t e d value by the defect c a l c u l a t e d
length as the display thickness. The display function may be a
function of displaying the d e f e c t c a l c u l a t e d length as the display
10 length according t o a comparison of the d e f e c t c a l c u l a t e d length and
the prescribed length, and t o display the value obtained by dividing
the c a l c u l a t e d i n t e g r a t e d value by t h e d e f e c t c a l c u l a t e d length as
t h e d i s p l a y t h i c k n e s s . Theprescribedlengthmaybeavalueofgreater
than or equal t o 5 mm and smaller t h a n or equal t o 30 mm. In such
15 cases, the d e f e c t c a l c u l a t e d thickness of the "portion where the
thickness of the yarn defect becomes p a r t i a l l y large" t h a t is l i k e l y
t o appear when t h e d e f e c t c a l c u l a t e d length becomes l a r g e can be
e f f e c t i v e l y prevented from being displayed on the display device as
the display thickness.
20 The display function may be a f u n c t i o n of displaying the value
obtained by dividing the c a l c u l a t e d i n t e g r a t e d value by the d e f e c t
c a l c u l a t e d thickness a s t h e display length according t o a comparison
of the d e f e c t c a l c u l a t e d thickness and the p r e s c r i b e d t h i c k n e s s , and
t o display the defect c a l c u l a t e d thickness as the display thickness.
25 The prescribed thickness may be a value of g r e a t e r than or equal t o
150% and smaller t h a n or equal t o 200% of the average thickness of
the yarn. In such cases, the contradiction can be e f f e c t i v e l y
suppressed from occurring between the determination information and
the display length of the yarn d e f e c t .
30 A yarn defect c l a s s i f y i n g device according t o an embodiment of
the present invention is a yarn defect c l a s s i f y i n g device used i n
a yarn winding machine including a yarn supplying device adapted t o
supplyayarn, awindingdevice adaptedtowindtheyarnintoapackage,
and a yarn defect removal device adapted t o remove a yarn defect of
35 the yarn between the yarn supplying device and the winding device,
the yarn defect c l a s s i f y i n g device including a yarn d e f e c t d e t e c t i n g
device adapted t o detect the yarn defect between the yarn supplying
device andthewinding device, a removal determination s e c t i o n a d a p t e d
t o c a l c u l a t e a removal determination value f o r a s e t length of the
5 yarn i n accordance with a detected thickness of the yarn defect
detected by the yarn defect d e t e c t i n g device, and t o remove the yarn
defect by the yarn defect removal device when the removal
determination value exceeds a prescribed value, and a c a l c u l a t i n g
section adapted t o c a l c u l a t e a display thickness of the yarn defect
10 a n d a d i s p l a y l e n g t h o f t h e yarndefect i n a c c o r d a n c e w i t h t h e d e t e c t e d
thickness and a detected length of the yarn d e f e c t .
In t h i s yarn defect c l a s s i f y i n g device, the removal
determination value with respect t o the s e t length of the yarn is
c a l c u l a t e d i n accordance with the d e t e c t e d t h i c k n e s s of the yarn
15 d e f e c t , and determination is made t o remove the yarn defect when the
removal determination value exceeds the prescribed value. The
display thickness and the d i s p l a y l e n g t h of the yarn defect a r e
c a l c u l a t e d i n accordance with the d e t e c t e d t h i c k n e s s of the yarn
defect and the detected length of the yarn d e f e c t . According t o the
20 yarn defect c l a s s i f y i n g device, contradiction canbe suppressed from
occurring between the determination information i n d i c a t i n g whether
or not the yarn defect has been removed, and the display length and
t h e d i s p l a y thickness of the yarn d e f e c t .
The removal determination section may be arranged i n p l u r a l s ,
25 and the c a l c u l a t i n g s e c t i o n may be arranged i n p l u r a l s . According
t o such configuration, f o r example, the display thickness and the
display length can be appropriately c a l c u l a t e d according t o the type
of yarn d e f e c t .
A d i f f e r e n t s e t length may be s e t for each of the removal
30 determination s e c t i o n s . According t o such configuration, f o r
example, the display thickness and t h e d i s p l a y length can be
appropriately c a l c u l a t e d by s e t t i n g d i f f e r e n t length f o r each of the
p l u r a l i t y of removal determination s e c t i o n s according t o the type
of yarn d e f e c t .
3 5 A t l e a s t one of a f i r s t c a l c u l a t i n g s e c t i o n , a second
c a l c u l a t i n g section, and a t h i r d c a l c u l a t i n g s e c t i o n is arranged for
the c a l c u l a t i n g s e c t i o n . The f i r s t c a l c u l a t i n g s e c t i o n is adapted
t o c a l c u l a t e a maximum value of the d e t e c t e d t h i c k n e s s as the display
thickness, and t o c a l c u l a t e a length of the yarn defect a t a t h i c k n e s s
5 of a p r e s c r i b e d percentage value of the maximum value of t h e d e t e c t e d
thickness as the display length. The second c a l c u l a t i n g s e c t i o n is
adapted t o c a l c u l a t e t h e maximum value of the d e t e c t e d t h i c k n e s s as
the display thickness, and t o c a l c u l a t e a value obtained by dividing
the removal determination value by the maximum value of the detected
10 thickness as the display length. The t h i r d c a l c u l a t i n g s e c t i o n is
adapted t o c a l c u l a t e a value obtained by dividing the removal
determination value by t h e d e t e c t e d l e n g t h a s t h e display thickness,
and t o calculatethedetectedlengthasthe display length. According
t o the c a l c u l a t i o n of the f i r s t c a l c u l a t i n g s e c t i o n , c o n t r a d i c t i o n
15 can be appropriately suppressed from occurring between the
determination information i n d i c a t i n g whether or not the yarn defect
has been removed, and the d i s p l a y l e n g t h and the display thickness
oftheyarndefectfortheyarndefectofwhichthelengthis r e l a t i v e l y
short and the thickness is r e l a t i v e l y t h i c k l i k e nep, f o r example.
20 According t o the c a l c u l a t i o n of the second c a l c u l a t i n g s e c t i o n ,
c o n t r a d i c t i o n canbe appropriately suppressed fromoccurring between
the determination information i n d i c a t i n g whether or not the yarn
defect has been removed, and the display length and the display
thickness of the yarn defect for the yarn defect of which the length
25 and the thickness are moderate l i k e slub, f o r example. According t o
t h e c a l c u l a t i o n of the t h i r d c a l c u l a t i n g s e c t i o n , c o n t r a d i c t i o n can
be appropriately suppressed from occurring between the determination
informationindicatingwhether or not the yarn defect has been removed,
and the display length and the display thickness of the yarn defect
30 f o r the yarn defect of which the length is r e l a t i v e l y long r e f e r r e d
t o as long yarn d e f e c t , for example.
The c a l c u l a t i n g s e c t i o n may be adapted t o c a l c u l a t e an
i n t e g r a t e d value of the detected thickness of the yarn defect as a
c a l c u l a t e d i n t e g r a t e d value, t o c a l c u l a t e the d e t e c t e d l e n g t h as the
35 display length, and t o c a l c u l a t e a value obtained by dividing the
calculated i n t e g r a t e d value by t h e d e t e c t e d length as t h e d i s p l a y
thickness. The c a l c u l a t i n g s e c t i o n may be adapted t o c a l c u l a t e the
detected length as the display length according t o a comparison of
t h e d e t e c t e d length and a prescribed l e n g t h , and t o c a l c u l a t e a value
5 obtainedby dividing the calculatedintegratedvalue by the detected
length as the display thickness. According t o such configuration,
the detected thickness of "the portion where the thickness of the
yarn defect becomes p a r t i a l l y large" t h a t is l i k e l y t o appear when
the d e t e c t e d l e n g t h becomes l a r g e can be e f f e c t i v e l y prevented from
10 being calculated as the display thickness.
The c a l c u l a t i n g section may be adapted t o c a l c u l a t e a value
obtained by d i v i d i n g t h e calculated i n t e g r a t e d value by the detected
thickness as the display length according t o a comparison of the
detected thickness and a prescribed t h i c k n e s s , and t o c a l c u l a t e the
15 detected thickness as t h e d i s p l a y thickness. According t o such
configuration, contradiction can be e f f e c t i v e l y suppressed from
occurring between the determination information i n d i c a t i n g whether
or not the yarn defect has been removed, and the d i s p l a y l e n g t h of
the yarn defect.
20 Theyarndefectclassifyingdevicemayfurtherincludeadisplay
device adapted t o display determination information i n d i c a t i n g
whether or not the yarn defect has been removed, t h e d i s p l a y length,
and the display thickness. According t o such configuration, the
r e l a t i o n s h i p between the determination information, and the display
25 length and the display thickness can be v i s u a l l y recognized.
Ayarnwindingmachine according t o an embodiment o f t h e present
invention includes a yarn supplying device adapted t o supply a yarn,
awindingdevice adaptedtowindthe yarn i n t o apackage, a yarndefect
removal device adapted t o remove a yarn defect of the yarn between
30 the yarn supplying device and the winding device, and any yarn defect
c l a s s i f y i n g device described above.
According t o the yarn winding machine, contradiction can be
suppressed from occurring between the determination information
i n d i c a t i n g whether or not the yarn defect has been removed, and the
35 display length and the display thickness of the yarn d e f e c t .
According tothe present invention, the yarn defect classifying
device and the yarn winding machine are capable of suppressing
contradiction from occurring between the determination information
indicating whether or not the yarn defect has been removed, and the
5 classification information indicating the display length and the
display thickness of the yarn defect.

WE CLAIM:
1. A yarn defect classifying device used in a yarn winding
machine including a yarn supplying device adapted to supply a yarn,
a winding device adapted to wind the yarn into a package, and a yarn
5 defect removal device adapted to remove a yarn defect of the yarn
between the yarn supplying device and the winding device, the yarn
defect classifying device comprising:
a yarn defect detecting device adapted to detect the yarn defect
between the yarn supplying device and the winding device;
10 a removal determination section adapted to calculate a removal
determination value for a set length of the yarn in accordance with
a detected thickness of the yarn defect detected by the yarn defect
detecting device, and to remove the yarn defect by the yarn defect
removal device when the removal determination value exceeds a
15 prescribed value; and
a calculating section adapted to calculate a display thickness
of the yarn defect and a display length of the yarn defect in accordance
with the detected thickness and a detected length of the yarn defect.
20 2. The yarn defect classifying device according to claim 1,
wherein a plurality of the removal determination section and a
plurality of the calculating section.
3. The yarn defect classifying device according to claim 2,
25 wherein a different set length is set for each of the removal
determination sections.
4. The yarn defect classifying device according to any one of
claim 1 through claim 3, wherein at least one of a first calculating
30 section, a second calculating section and a third calculating section
is provided as the calculating section,
the first calculating section (54N) is adapted to calculate a
maximum value of the detected thickness as the display thickness,
and to calculate a length of the yarn defect at a thickness of a
35 prescribed percentage value of the maximum value of the detected
29
I
thickness as the display length,
the second calculating section is adapted to calculate the
maximum value of the detected thickness as the display thickness,
and to calculate a value obtained by dividing the removal
5 determination value by the maximum value of the detected thickness
as the display length, and
the third calculating section is adapted to calculate a value
obtained by dividing the removal determination value by the detected
length as the display thickness, and to calculate the detected length
10 as the display length.
5. The yarn defect classifying device according to claim 1,
wherein the calculating section is adapted to calculate an integrated
value of the detected thickness of the yarn defect as a calculated
15 integrated value, to calculate the detected length as the display
length, and to calculate a value obtained by dividing the calculated
integrated value by the detected length as the display thickness.
6. The yarn defect classifying device according to claim 5,
20 wherein the calculating section is adapted to calculate the detected
length as the display length according to a comparison of the detected
length and a prescribed length, and to calculate a value obtained
by dividing the calculated integrated value by the detected length
as the display thickness.
25
7. The yarn defect classifying device according to claim 5 or
claim 6, wherein the calculating section is adapted to calculate a
value obtained by dividing the calculated integrated value by the
detected thickness as the display length according to a comparison
30 of the detected thickness and a prescribed thickness, and to calculate
the detected thickness as the display thickness.
8. The yarn defect classifying device according to any one of
claim 1 through claim 7, further comprising a display device adapted
35 to display determination information indicating whether or not the
30
yarn defect has been removed, the display length, and the display
thickness.
9. A yarn winding machine comprising:
5 a yarn supplying device adapted to supply a yarn;
a winding device adapted to wind the yarn into a package;
a yarn defect removal device adapted to remove a yarn defect
of the yarn between the yarn supplying device and the winding device;
and
10 the yarn defect classifying device according to any one of claim
1 through claim 8.
10. A yarn defect classifying method used in a yarn winding
machine including a yarn supplying device supplying a yarn, a
15 winding device winding the yarn into a package, and a yarn defect
removal device adapted to remove a yarn defect of the yarn between
the yarn supplying device and the winding device, the method
including the steps of:
detecting the yarn defect between the yarn supplying device
20 and the winding device;
calculating a removal determination value for a set length •
of the yarn in accordance with a detected thickness of the yarn
defect, and removing the yarn defect when the removal determination
value exceeds a prescribed value; and
25 calculating a display thickness of the yarn defect and a
display length of the yarn defect in accordance with the detected
thickness and a detected length of the yarn defect.
11. The yarn defect classifying method according to claim
30 10, wherein a maximum value of the detected thickness is calculated
as the display thickness, and a length of the yarn defect at a
thickness of a prescribed percentage value of the maximum value
of the detected thickness is calculated as the display length,
the maximum value of the detected thickness is calculated as
35 the display thickness, and a value obtained by dividing the removal
31
determination value by the maximum value of the detected thickness
is calculated as the display length, and
a value obtained by dividing the removal determination value
by the detected length is calculated as the display thickness, and
5 the detected length is calculated as the display length.
12. The yarn defect classifying method according to claim
10, wherein an integrated value of the detected thickness of the
yarn defect is used as a calculated integrated value, the detected
10 length is calculated as the display length, and a value obtained
by dividing the calculated integrated value by the detected length
is used as the display thickness.
13. The yarn defect classifying method according to claim
15 12, wherein the detected length is calculated as the display length
according to a comparison of the detected length and a prescribed
length, and a value obtained by dividing the calculated integrated
value by the detected length is used as the display thickness.
20 14. The yarn defect classifying method according to claim
12 or claim 13, wherein a value obtained by dividing the calculated
integrated value by the detected thickness is used as the display
length according to a comparison of the detected thickness and a
prescribed thickness, and the detected thickness is used as the
25 display thickness.
15. The yarn defect classifying method according to any one
of claim 10 through claim 14, further comprising the step of
displaying determination information indicating whether or not the
30 yarn defect has been removed, the display length, and the display
thickness.