BACKGROUND OF THE INVENTION
1. F i e l d of t h e I n v e n t i o n
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 t e c h n i q u e of a winding
device adapted t o wind a spun yarn t o form a package.
2 . D e s c r i p t i o n of t h e Related A r t
Conventionally, t h e r e :i.s known a winding devjice adapted t o
wind a spun yarn unwound from a yarn supplyi-ng bobbin i:o form
a package ( s e e e . g . , Japanese Patent No. 3 7 1 4 2 1 8 ) . The
winding device i n c l u d e s a yarn d e t e c t i n g secti-on adapted t o
d e t e c t presence o r absence of a d e f e c t i v e p a r t of t h e spun
yarn, and presence or abseiice o f y a r n breakage o f t h e spun
yarn, and a yarn j o i n i n g s e c t i o n adapted t o joi.n ends o f t h e
spun yarn.
When t h e yarn d e t e c t i n g s e c t i o n d e t e c t s t h e d e f e c t i v e parL
of t h e spun yarn, t h e wi.ndi.ng device c u t s t h e spun yarn and
i n t e r r u p t s t h e formation of t h e package. Then, a f t e r removing
irhe d e t e c t i ~ v e p a r t , the wi.nd.i.ng device j o j ~ n s t h e d i s c u n n c c t e d
spun yarn i n t h e yarn :jo.i.ri~Lrig s e c t i o n t o :resumo t h e formai..ion
of t h e package.
When the yarn d e t e c t i n g s e c t i o n d e t e c t s t h e yarn breakage
of t h e spun yarn, tho wi.nding devi.ce i i n t e r r u p t s t h e for.rnatj.on
of tho package. Then, t h e windi.ng d e v i c e j o i n s t h e
d i s c o n n e c t e d spun yarn by t h e yarn j o i n i n g s e c t i o n t o resume
t h e formation o f t h e package. I f t h e spun yarn wound around a
yarn supplyiriy bobbi~n i s entirr?:ly unwo~ind, t h e r e l e v a n t spun
yarn 3.s joi.ned wi.th a spun yarri of a new yarn suppl.yj.ng bobbin
t o resume t h e format-ion ol t h e packaye.
I f tho spun yarn is broken by a p p l i c a t i o n of an e x c e s s i v e
t e n s i o n on t h e spun yarn, t h e r e is a high p o s s i b i l i t y t h a t t h e
spun yarn may break again even i f t h e spun yarn is joined and
t h e formation of t h e package i.s resumed. Since t h e spun yarn
:is broken by a p p l i c a t i - o n of ail e x c e s s i v e tc?nsi.on on t h e spun
yarn when t h e spun yarn is caught or e n t a n g l e d a t t h e fl.aw of
t h e yarn supplying bobb:in, t h e spun yarn w i l l be broken a9a.i.n
by app1icati.0~1 of an e x c e s s i v e t e n s i o n on t.he spun yarn even
i f t h e formation of t h e package i s resumed.
Therefore, i n t h e conventional. winding d e v i c e , a problem
a r i s e s i n t h a t t h e yarn j o i n i n g o p e r a t i o n of t h e spun yarn is
repeated, t h e r e b y lowering t h e o p e r a t i o n r a t e . Furthermore,
t h e r e a l s o a r i s e s a problcm i n t h a t t h e q u a l i t y of t h e package
lowers i f t h e y a r n j o i n i n g o p e r a t i o n i.s r e p e a t e d . T h e r e f o r e ,
t o avoid t h e r e p e t i t i o n of t h e yarn j o i n i n g o p e r a t i o n , t h e r e
is d e s i r e d a t e c h n i q u e of promptly and a c c u r a t e l y d e t e r m i n i n g
t h a t t h e spun yarn wound around t h e yarn supplyi.ng bobbin
cannot be unwound, t h a t is, t h e yarn suppl-ying bobbin is
abnormal.
URSEF SUMMARY OF THE INVENTION
An o b j e c t of t h e p r e s e n t i n v e n t i o n is t o provide a
t e c h n i q u e c a p a b l e of promptly and a c c u r a t e l y determining t h a t
a y a r n suppl ying bobbin is abnormal .
A f i r s t a s p e c t of t h e iinvention r e l a t e s t o a winding
d e v i c e i n c l u d i n g a yarn supplying s e c t i o n adapted t o support a
y a r n s u p p l y i n g bobbin; a wi.ndirig s e c t i o n adapted t o wind a
spun yarn uriwound from t h e yarn supp1~yi.ng bobbin t o f:orm a
package; a t e n s i o n d e t e c t i n g sectiion adapted t o d e t e c t a
t e n s i o n of t h e spun yarn fed from t h e yarn supplying s e c t i o n
I.o the? wi.nd:i.nc~ s e c t i o n ; a y a r n d e t e c t i n g sectj.on adapted t o
d e t e c t yarn breakage of t h e spurt yarn fed i~rom t h e yarn
suppl.ying s e c t i o n t o t h e winding s e c t i o r l ; it yarn j o i n i n g
s e c t i o n adapted t o :join a spun yarn f ~ o x i tlic yarn supplying
s e c t i o n and a spun yarn from t h e winding s e c t i o n when t h e yarn
d e t e c t i n g s e c t i o n d e t e c t s t h e yarn breakage of t h e spun yarn;
a c o n t r o l s e c t i o n adapted t o cause t h e yarn j o i n i n g s e c t i o n t o
j o i n t h e spun yarn t o resume t h e formation of t h e package; and
a det:errnination s e c t i o n adapted t o deterinine t h a t t h e yarn
supplying bobbi~n is abnormal when t h e yarn d e t e c t i n g s e c t i o n
d e t e c t s t h e yarn breakage of t h e spun yarn and t h e t e n s i o n
detectj.ng s e c t i o n d e t e c t s a val.ue g r e a t e r than o:r equal t o a
predetermined v a l u e .
The p r e s e n t i n v e n t i o n has t h e following e f f e c t s .
According t o t h e f i r s t a s p e c t , determinati-on can be made
t h a t t h e yarn suppl~yirig bobbin is abnormal. A c c o r d i n g l . ~ , t h e
r e p e t i t i o n of t h e yarn :]oi.ni.ng o p e r a t i o n can b e a v o i d e d by
r e p l a c i n g t h e yarn supplying bobbin, and t h e o p e r a t i o n r a t e of
t h e winding dev-ice can be improved. The lowering o f t h e
q u a l i t y of t h e package can a l s o be prevented.
BRIF,F DESCRIP'I'IOLd OF THE DRAWINGS
Fig. 1 is a s c h e m a t i c view i l l u s t r a t i n g an o v e r a l l
c o n f i g u r a t i o n of a winding d e v i c e a c c o r d i n g t o an embodi-ment
of I-he p r e s e n t i n v e n t i o n ;
Fj~g. 2 is a s i d e view of t h e wirldiiig device a t t h e beginni.ng
of a y a r n j o i n i n g o p e r a t i o n when a new yarn suppl.y:i.ng bobbin
i s fed;
l?:i.g. 3 is a s i d e viiew of t h e windfing d e v i c e d u r i n g the yarn
j o i n i n g o p e r a t i o n ;
Fig. 4 is a i-i.ow c h a r t i 1 l u s t r a t i . n g a c o n t r o l modc a t t h e time
of? a f i r s t . yarn breakage;
Pig. 5 is a flow c h a r t i l l u s t r a t i . n g a f i r s t c o n t r o l mode a t
t h e t i m e of a second yarn breakage; and
Fig. 6 is a flow c h a r t i l 1 u s t r a L : i n g a second conlrrol mode a t
t h e t i m e 01: t h e second yarn breakage.
DETAILED DESCR1P'l'I:ON OF PREFERRED El'lBODIMENTS
F i r s t , a winding d e v i c e 100 according t o one embodiment of
t h e p r e s e n t i n v e n t i o n w i l l be d e s c r i b e d .
FIG. I. j.s a schematic vj.ew i1.1.ustrating an overal.l
c o n f i . g u r a t i o n of t h e winding device 3.00. White arrows i n t h e
drawing i n d i c a t e a f e e d i n g d i r e c t i o n of a spun yarn Y. F I G . 2
and FIG. 3 a r e s i d e views each i l l u s t r a t i n g a yarn j o i n i n g
o p e r a t i o n of t h e winding device 100.
The winding d e v i c e 100 i n c l u d e s a y a r n s u p p l y i n g s e c t i o n 1.
A yarn supplying b0bbj.n SI-3, around which t h e spun yarn Y is
wound, is s e t i.n t h e yarn supplying s e c t i o n 1.. The w:i.ndi.ng
device 1.00 i n c l u d e s a yarn unwinding a s s i s t i - n g s e c t i o n 2 , a
tcinsion applying s e c t i o n 3, a t e n s i o n d e t e c t i n g s e c t i o n 4 , a
yarn joi.ning s e c t i o n 5, a yarn d e t e c t j - n g s e c t i o n 6, a
t r a v e r s i n g s e c t i o n 7, and a winding s e c t i o n 8 along t h e
feeding d i r e c t i o n of t h e spur1 yarn Y unwound from t h e yarn
suppiying bobbin SR. Furthermore, t h e winding device 100
i n c l u d e s an upper yarn guiding s e c t i o n 9, a lower yarn guiding
s e c t i o n 10, and a c o n t r o l s e c t i o n 11.
The yarn unwinding a s s i s t i n g s e c t i o n 2 a s s i s t s t h e
unwinding of t h e spun yarn Y wound around t h e y a r n s u p p l y i n g
b o b SB. The yarn unwj.nding a s s i s t i n g secl.i.on 2 r e s t r i c t s
t h e spun yarn Y unwound from t h e y a r n s u p p l y i n g bobbin SR from
s p r e a d i n g by c e n t r i f u g a l f o r c e .
'J'he t e n s i o n appl~ying secI~.iorl 3 appllies a predetermi.inecl
t:ensi.on on t h e spun yarn Y unwound Z.rom t h e y a r n s u p p l y i n g
bobbin SB. The t e n s i o n applying s e c t i o n 3 e n a b l e s high-specd
winding of t h e spun yarn Y by appl.ying a predetermined t e n s i o n
on t h e spun yarn Y . A s t h e t e n s i o n appl.yi.ng s e c t i o n 3, a
d i s c - t y p e t e n s o r , and t h e l i k e may a l s o be employed i n
addi.t;:ion t o a gate-type t.ensor t h a t a p p l i e s t h e t e n s i o n on t h e
spun yarn Y by comb t e e t h .
3'he 1.-ensi~on del:.(?:.cti~ng s e c t i o n 4 del-ecl-s 1-he telnsion
applj.ed on t h e spun yarn Y . The Lensj.on d e t e c t i n g s e c t i o n 4
can d e t e c t t h e te11sj.on appli.ed on Lhe spun yarn Y based on a
v o l t a g e v a l u e t h a t changes accordj.ng t o t h e t e n s i o n of t h e
spun yarn Y . S p e c i f i c a l l y , a u n i t c o n t r o l s e c t i o n l l c
analyz,es a d e t e c t i o n s i g n a l from t h e t e n s i o n d e t e c t i n g s e c t i o n
4 t o g r a s p t h e t e n s i o n a p p l i e d on t h e spun yarn Y.
The yarn j o i n i n g s e c t i o n 5 j o i n s ends OF %he spun yarn Y
t o each o t h e r . When t h e spun yarn Y j.s broken, f o r exampl.e,
t h e yarn j o i n i n g s e c t i o n 5 j o i n s t h e ends of t h e d i s c o n n e c t e d
spun yarn Y t o each o t h e r . A s t h e yarn j o i n i n g s e c t i o n 5, a
mechanical s p l i c e r and t h e l i k e haviing a d i s c - t y p e j o i n i n g
mechanism may be employed i.n a d d i t i o n t o an ai.r s p l i . c e r t h a t
j o i n s t h e ends of t h e spun yarn Y by a w h i r l i n g a i r f l o w .
The yarn detectj-rig s e c t i o n 6 d e t e c t s a d e f e c t i v e p a r t of
t.he spun yarn Y . The yarn d c t e c t i n g secti.011 6 d e t e c t s yarn
breakage o f t h e spun yarn Y . The yarn d e t e c t i . n g s e c t i o n 6
i r r a d i a t e s t h e spun yarn Y with a liight e m i t t i n g diode a s a
l i g h t source, and d e t - e c t s t h e d e f e c t i v e p a r t of t h e spun yarn
Y and t h e y a r n breakage o f t h e spun yarn Y based on a
r e f l e c t e d l i g h t q u a n t i t y from t h e spun yarn Y . Speci.ficaI..ly,
an a n a l y z e r 61 a n a l y z e s a d e t e c t i o n signal. from t h e yarn
d e t e c t j - n g s e c t i o n 6 t o d e t e r m i n e p r e s e n c e o r absence of t h e
d e f e c t i v e p a r t slid presence o r abscncc o f the yarn breakage.
A c u t t e r 62 capable of c u t t i n g t h e spun yarn Y i s p~rovided i n
proxi.1nil.y t o t h e yarn d e t e c t i n g s e c t i o n 6. 'l'he u n i t c o n t r o l
sectj.on 3.3.c can g r a s p t h e yarn breakage of t h e spun yarn Y by
a cutt:jng s i g n a l of t h e spun yarn Y by t h e c u t t e r 62.
Herein, t h e d e f e c t i . v e p a r t of t h e spun yarn Y i n c i u d c s a
case where f o r e i g n s u b s t a n c e s a r e c o n t a i n e d i n t h e spun yarn Y
i n a d d i t i o n t o abnormal-ity i n which a p o r t i o n of t-.he spun yarn
Y i s t o o t h i c k ( t h i c k yarn) o r t o o t h i n ( t h i n y a r n ) . 'She yarn
breakage of t h e spun yarn Y is a concept t h a t i n c l u d e s a c a s e
where t h e spun yarn Y i s c u t by t h e c u t t e r 62, a c a s e whcro
t h e spun yarn Y wound around t h e yarn s ~ ~ p p l y i nbgo bbin SR is
entire1.y unwound, and a case where t h e spun yarn Y i s brokeis
by app1icatj.ori of an excessjive teilsi.ois on Llle spun yarn Y . A s
t h e yarn d e t e c t i n g s e c t i o n 6, a c a p a c i t a n c e sensor and t h e
l i k e may be employed i n a d d i t i o n t o an optical. s e n s o r
d e s c r i b e d above.
The t r a v e r s i n g s e c t i o n 7 t r a v e r s e s t h e spun yarn Y guided
t o a package P. 'The t r a v e r s i n g secti.on 7 incliides a t r a v e r s e
guide '71 and a t r a v e r s e guide d r i v i n g u n i t ' 7 % . The t-raverse
guide d r i v i n g u n i t 72 d r i v e s t h e t r a v e r s e guide 71 based on a
c o n t r o l signal. from a t r a v e r s e guide d r i v e c o n t r o l s e c t i o n l l a .
The t r a v e r s e guide d r i v e c o n t r o l s e c t i o n l l a t r a n s m i t s t h e
c o n t r o l signal. t o t h e t r a v e r s e guide d r i v i n g u n i t 72 based on
an i n s t r u c t i o n from t h e u n i t c o n t r o l s e c t i o n l l c . The uni.t
c o n t r o l s e c t i o n ilc :includes a d e t e r m i n a t i o n s e c t i o n l l d
adapted t o detcrmj.ne whether o r not t h e spun yarn Y wound
around t h e yarn supplying bobbin SB can be unwound, t h a t i s ,
whether o r not t h e yarn supplying bobbin SB is abnormal. The
c o n t r o l s e c t i o n 11 has a c o n c e p t i n c l u d i n g t h e t r a v e r s e guide
d r i v e c o n t r o l secti.on l l a , t h e u n i t c o n t r o l s e c t i o n :LI.c, and
t h e d e t e r m i n a t i o n s e c t i o n l l d .
The t r a v e r s e guj.de 71 is an arm member provided with a
hooking s e c t i o n adapted t o hook t h e spun yarn Y . The t r a v e r s e
guide 71 reci.procatcs i n a rotirti.on a x i s d i r e c t i o n of a bobbin
Ti3 wi.th t h e spun yarn Y hooked t o t h e hooking s e c t i o n t o
t r a v e r s e t h e spun yarn Y.
'Tho t r a v e r s e guide di-ivjng un.i.t 72 is mainl~y coiif.i.gu:red by
a servomotor. The t r a v e r s e guide d r i v i n g u n i t 7 % r c c i p r o c a t c s
t h e t r a v e r s e guide 71 by forwardly r o t a t i n g o r rcverse1.y
r o t a t i n g a rotal:i.on s h a f t of t h e servomotor. The t r a v e r s e
gui.de dri.vi.ng u n i t '71 uses a servomotor :for a power s o u r c e ,
but f o r example, a steppi.ng motor o r t h e l i k e may a l s o be used,
and any type of motor can be used.
The t r a v e r s i n g s e c t i o n 7 t h u s c o n f i g u r e s a so-call.cd armtype
t r a v e r s e devi.ce ildapt.ed l o t l - a v e r s e t h e spun yarn Y hy
t h e r e c i - p r o c a t i n g t r a v e : r s e guide '71. However, a b e l t - t y p e
tiraverse deviice, a b l a d e t r a v e r s e d e v i c e , arid t h e 1.j.ke can be
used i n a d d i t i o n t o t h e arm-type t r a v e r s e devi-ce. The windinq
d e v i c e 100 may employ a t r a v e r s e drum method, i . e . , a
s t r u c t u r e i.n which a drum t h a t r o t a t e s while maki.ng c o n t a c t
with t h e package P is arranged t o t r a v e r s e t h e spun yarn Y by
a guiding groove formed on a s u r f a c e of t h e drum.
The winding s e c t i o n 8 winds t h e spun yarn Y by r o t a t j ~ n g
t h e bobbin TB. The winding s e c t i o n 8 i n c l u d e s a bobbin
holding u n i t 81, a coritact r o l l e r - 82, and a package d r i v i n g
u n i t 83. The package drivi.ng u n i t 83 r o t a t e s t h e bobbin TB
based on a c o n t r o l s i g n a l from a package d r i v e c o n t r o l s e c t i o n
l l b . The package dr.i.ve control. s e c t i o n l l b t r a n s m i t s t h e
c o n t r o l signal. t o t h e package d r i v i n g u n i t 83 based on an
i n s t r u c t i o n from t h e u n i t c o n t r o l s e c t i o n l l c . As d e s c r i b e d
above, t h e u n i t c o n t r o l s e c t i o n l l c i n c l u d e s a d e t e r m i n a t i o n
s e c t i o n l l d adapted t o determine whether o r not t h e spun yarn
Y wound around t h e y a r n s u p p l y i n g b0bbi.n SB can be unwound,
t h a t is, whether o r not t h e yarn supplying bobbin SB is
abnormal. The c o n t r o l s e c t i o n 1.1 has a concept i r ~ c l u d i n g t h e
package d r i v e c o n t r o l s e c t i o n l l b , t h e u n i t control. s e c t i o n
Ilc, and t h e d e t e r m i n a t i o n s e c t i o n l l d .
The bobbin 110ldiriy ur1i.t 81. i n c l u d e s a bearing for:
removably clamping th.e bobbin TB, and r o t a t a b l y holds t h e
bobbin TB. The bobbin holding u n i t 81 can swing w i t h a swing
s h a f t 811 a s c e n t c r (see arrow i.n 1.'1(;. 3 ) . Therefore, ever] j f
ari o u t e r diameter of t h e paclcage 1' becomes l a r g e accompany:i.ng
wiridi.ng of t h e spun yarn Y, t h e bobbin holdj~ng u n i t 83. enables
t h e conLact r o l l e r 82 t o push t h e s u r f a c e of t h e package P at
a p r e s c r i b e d 1-oad.
The c o n t a c t r o l l e r 82 r o t a t e s accompanying t h e r o t a t i o n of
t h e r o t a t i n g package P. The c o n t a c t r o l l e r 82 a d j u s t s a shape
of t h e package P by p r e s s i n q t h e s u r f a c e of t h e package P.
The coritact r o l l e l : 8% j.s a subsl:anl.:i.a:lLly cy1indi:ical r o t ~ a t i n g
body, but may a l s o be a conical. 1:otat:iny body, f o r examnpl.e,
and may be of any shape.
The package d r i v i n g u n i t 83 is mainly c o n f i g u r e d by a
servomotor. The package d r i v i n g u n i t 83 d r i v e s t h e servomotor
t o r o t a t e t h e bobbin TB and t h e package P formed on t h e bobbin
TB. llhe package d r i v i n g u n i t 83 uses a servomotor f o r t h e
power. source, but f o r example, a s t e p p i n g motor o r the l i k e
may a l s o be used, and any type of motor can be used.
As descri.bed above, t h e wi.nding s e c t i o n 8 i s c o n f i g u r e d
such t h a t t h e package P is r o t a t e d by t h e package d r i v i n g u n i t
83, and a c o n t a c t r o l l e r 82 is r o t a t e d accompanying t h e
r o t a t i o n o t t h e package P. However, t h e c o n t a c t r o l l . e r 82 may
be r o t a t e d by t h e package d r i v i n g u n i t 83, and t h e package P
may be r o t a t e d accompanying t h e r o t a t i o n of t h e c o n t a c t r o l l e r
82.
For exampl-e, when t h e spun yarn Y is broken, t h e upper
yarn gui-ding s e c t i o n 9 c a t c h e s a yarn end (upper yarn) YE of
t h e spun yarn Y wound i n t o t h e package P. The upper yarn
guiding s e c t i o n 9 is swung while sucking and holding t h e yarn
end YE t o p u l l o u t t h e spun yarn Y from Lhe package P.
S p e c i f i . c a l l . y , t h e upper yarn guiding s e c t i o n 9 is swung when
t h e y a r n j o i n i n g o p e r a t i o n is s t a r t e d ( s e e arrow i n FIG. 2 ) ,
and c a t c h e s t h e yarn end YE by sucking a i r from a s u c t i o n
opening 9a. The upper yarn guiding sectj.on 9 i s swung while
sticking and holding the yarn end YE (see arrow i n FIG. 3) t o
p u l l ouL Che spun yarn Y from t h e package 1'. TI? t h i s c a s e ,
!-.he package d r i v i n g unj.t 83 revel-sc1.y r o t a t e s t:he bobbin TB
and t h e packaye P (see arrow i n FIG. 3 ) .
For exampi-e, when t h e spun yarn Y i.s broken, t h e lower
yarn guiding s e c t i o n 10 c a t c h e s t h e yarn end (l~ower yarn) YE
of t h e spun yarn Y wound around t h e yarn suppl-ying bobbin SB.
'The lower yarn guiding secti-on 10 is swung while sucking and
holding t h e yarn end YE l o unwind t h e spun yarn Y from t h e
yarn supply.i.rig bobbin SR. Spec:i.fi.ca.l.l~y, l:he 1owe1- yarn
guiding s e c t i o n 10 c a t c h e s t h e yarn end YE by sucking a i r from
a s u c t i o n opening 10a. The lower yarin guiding secLion 1.0 i.s
swung while sucking and holding t h e yarn end YE ( s e e arrow i n
1 . 3) t o unwind t h e spun yarn Y from t h e yarn supplyi~ng
bobbin SB.
Subsequentl.y, t h e spun yarn Y arranged a t a predetermined
p o s i t i o i l by t h e upper yarn guidjing s e c t i o r ~ 9 aiid t h e spur1 yarn
Y arranged a t a predet.ermi.ned p o s i t i o n by t h e lower yarn
guj-ding s e c t i o n :LO a r e joined by t h e yarn j o i n i n g s e c t i o i l 5.
In t h i s manner, t h e winding d e v i c e 100 resumes t h e formation
of t h e package P.
As i . l . l u s t r a t e d i.n FIG. 2 and FIG. 3, t h e winding d e v i c e
100 incl-udes a yarn suppl.ying b0bbi.n supplyj.ng sect-ion 1 2 .
The y a r n s u p p l y i n g bobbin supplying s e c t i o n 1% car1 supply a
new yarn suppl.yirig bobbin SB t o t.he yarn supplying s e c t i o n 1.
based on an i n s t r u c t i o n from t h e controi s e c t i o n 11.
Furthermore, t h e winding device 100 j.ncl.udes a yarn supplying
bobbin c o l l e c t i n g s e c t i o n 13. The y a r n s u p p l y i n g bobbin
c o l L e c t i n g s e c t i o n 13 can c o l l e c t t h e y a r n s u p p l y i n g bobbin SB
d i s c h a r g e d Iroiil t h e winding d e v i c e 100.
Next, a technique capable of promptly and a c c u r a t e l y
d e t e r m i n i n g t h a t t h e spun yarn Y wound around t h e yarn
supplying bobbin SR cannot be unwound w i l l be d e s c r i b e d .
FIG. 4 t:o FIG. 6 a r e f l o w c h a r t s j ~ l l u s t r a t i . n g a c o n t r o l
mode of t h e winding device 100. FIG. 4 i l l u s L r a t e s a c o n t r o l
mode a t t h e time of a f i r s t yarli breakaye. ' I . 5 i . l l u s t r a t e s
a f i r s t cont.r:ol inode a t t h e t i . m e of a second yarn breakage.
FIG. 6 i l l u s t r a t e s a second c o n t r o l mode a t t h e time of t h e
second yarn breakage.
F'i.rst, t h e cont.1-01. mode at t h e time of ?.he f!i.rst yarn
breakage and t h e f i r s t control. mode a t t h e t i m e of t h e second
y a r n breakage w i l l be d e s c r i b e d with reference t o FIG. 4 and
FIG. 5.
Assume 1:hal- t-he yarn d e t e c t i n g secti.on 6 d e t e c t s t h e yarn
b~reakagc? of t h e spun yarn Y i n s t e p SI0:L. Speci.ficall.y,
assume thaC Llle coriLrol s e c t i o n 11 g r a s p s t h a t t h e spun yarn Y
i.s broken based on an anal.ysis r e s u l t of t h e a n a l y z e r 61. In
t h i s c a s e , t h e determinati.on s e c t i o n :Lid s t o r e s a t e n s i o n
val~ue o:E when t h e spun yarn Y is broken based on a d e t e c t i o n
s i g n a l from t h e t e n s i o n d e t e c t i n g s e c t i o n 4 .
In s t e p 5102, the c o n t r o l s e c t i o n 11 i n t e r r u p t s t h e
formation (w:i.nding) of t h e package P. S p e c i f i c a l . l . y , t h e
c o n t r o l s e c t i o n 1.1 s t o p s t h e r o t a t i o n o:E t h e package P by
t r a n s m i t t i n g a control. s i g n a l t o t h c package d r i v i n g u n i t 83.
The control. s e c t i o n 11 thus i n t e r r u p t s t h e formati.on of t h e
package P by stopping t h e r o t a t i o n of t h e package P.
In s t e p S103, t h e c o n t r o l s e c t i o n II c o n s i d e r s whether or
not t h e spun yarn Y is c u t by t h e c u t t e r 62. S p e c i f i c a l l y ,
t h e c o n t r o l s e c t i o n 11 g r a s p s whether o r n o t t h e spun yarn Y
is c u t by t h e c u t t e r 62 based on t h e presence o r absence o f a
c u t t i n g s i g n a l . . I f t h e spun yarn Y is c u t by t h e c u t t e r 62,
t h e process proceeds t o s t e p S106, and i.f t h e spun yarn Y is
not c u t by t h e c u t t e r 62, t h e process proceeds t o s t e p 5104.
A case where t h e spun yarn Y is c u t by t h e c u t t e r 62 is
assumed t o be a s t a t e i n which t h e spun yarn Y i.s c u t t o
remove t h e d e f e c t i . v e p a r t . A case where t h e spun yarn Y i s
not c u t by t h e c u t t e r 62 is assumed t o be a s t a t e i n which Llie
spun yarn Y wound around t h e yarn supplying bobbin SB is
e n t i r e l y unwound o r a s t a t e i n which t h e spun yarn Y is broken
by ;\ppl.i.cat.ion o l ail e x c e s s i v e teinsi~on on Lhe spur1 yacrr Y.
In s t e p S1.04, t h e d e t e r m i n a t i o n s e c t i o n l l d c o n s i d e r s
whether o r not $:he spun yarn Y is broken by a p p l i c a t i o n of an
e x c e s s i v e t e n s i o n on t h e spun yarn Y. S p e c i f i c a l l y , the
determinati.on s e c t i o n :ll:l.d g r a s p s whether o r riot t h e spun yarn
Y is broken by a p p l i c a t i o n o f a n e x c e s s i v e t e n s i o n based on
t h e t e n s i o n v a l u e s t o r e d i n s t e p S101. When t h e t e n s i o n value
s t o r e d i n s t e p SiOl i.s g r e a t e r than or cqual. 1-.o a
predetermined v a l u e , t h e d e t e r m i n a t i o n secti.on l.ld deterinjnes
t h a t t h e spun yarn Y is broken by a p p l i c a t i o n o f a n e x c e s s i v e
tens.i.on on t h e spur1 ydrll Y. If t h e spun yarn Y is broken by
applicat.i.on of an e x c e s s i v e t e n s i o n on t h e spun yarn Y, t h e
p r o c e s s proceeds t o s t e p S106, and i f t h e spun yarn Y i.s
broken without a p p l i c a t i o n of a n e x c e s s i v e t e n s i o n on t h e spun
yarn Y, t h e p r o c e s s proceeds t o s t e p S105.
A case where t h e spun yarn Y is broken by appli.cat:i.on of
an e x c e s s i v e t e n s i o n on t h e spun yarn Y is assumed, f o r
example, t o be a s t a t e i.n whfich t h e spun yarn Y is caught o r
entangled a t t h e flaw of t h e yarn supplying bobbin SB. A c a s e
where t h e spun yarn Y is broken without a p p l i c a t i o n of iln
e x c e s s i v e t e n s i o n on t h e spun yarn Y i.s assumed t o be a s t a t e
i n which t h e spun yarn Y wound around t h e yarn supplyj~ng
bobbin SB is e n t i r e l y unwound.
In s t e p S105, t h e c o n t r o l s e c t i o n : I I r e p l a c e s t h e yarn
supplying bobbin 513. Specifi.call.y, t h e c o n t r o l s e c t i o n I 1
i n s t r u c t s t h e d i s c h a r g e of t h e y a r n s u p p l y i n g bobbin SB t o t h e
y a r n s u p p l y i n g s e c t i o n I. and i n s t r u c t s t h e supply of a new
y a r n s u p p l y i n g bobbin SB t o t h e yarn suppl.ying bobbin
supplying s e c t i o n 12 (see bl-ack arrows i n FIG. 2 and FIG. 3 ) .
In s t e p S106, t h e c o n t r o l s e c t i o n 11 j o i n s t h e spun yarn Y
from t h e y a r n s u p p l y i n g s e c t i o n 1 and t h e spun yarn Y from t h e
winding s e c t i o r i 8 . 'That is, t h e c o n t r o l s e c t j ~ o n 11 j o i n s tile
spun yarn Y wound around t h e y a r n s u p p l y i n g bobbin SB and t h e
spun yarn Y wound around t h e package LJ. 'I'he o p e r a t i o n o:f
j o i n i n g t h e spun yarns Y, t h a t i.s, t:hc yarn j o i i l i n g olseratioil
i s an o p e r a t i o n of arrangi.ng t h e spun yarns Y by t h e upper
yarn guiding s e c t i o n 9 and t h e 1.ower yarn guid:i.ng s e c t i o n 3~0,
arid j o i n i n g t h e spun yarns Y by t h e yarn j o i n i n g sect:i.on 5.
In s t e p S10.7, t h e c o n t r o l s e c t i o n 1% resumes t h e formation
of t h e package P. S p e c i f i c a l l y , t h e c o n t r o l s e c t i o n 11
r o t a t e s t h e package P by transmi.tti.ng a c o n t r o l s i g n a l t o t h e
package dr.iving un:i.t 0 3 . The c o n t r o l s e c t i o n 1 3 . t h u s resumcls
t h e formation of t h e package P by r o t a t i n g t.hn package P.
According t o such a control. mode, t h e wiritlirig device 100
enables t h e fo1:mation of t h e package P t o col~t.i.riue. However,
i f t h e spun yarn Y is broken by a p p l i c a t i o n of an e x c e s s i v e
t e n s i o n on t h e spun yarn Y, t h e r e is a high p o s s i b i l i t y t h a t
t h e spun yarn Y may break again even i f t h e spun yarns Y a r e
joined and t h e formation of t h e package P is resumed. Since
the spun yarn Y is broken by appl.icat.ion of an excessi.ve
tension on the spun yarn Y when the spun yarn Y is caught or
entangled at the flaw of the yarn supplying bobbin SR, even i.f
the formation of the package P is resumed, the spun yarn Y may
break again by application of an abnormal tension (i.n the
second yarn breakage, thj.s is referred to as "abnormal tension"
for simplification. 'I'he "excessive tension" and the "abnormal
tension" are synonymous).
In step 5111, the control section I% grasps that the spun
yarn Y is again broken based on the analysis result o:E the
analyzer 61. In this case, the determination section lld
stores the tension value of when the spun yarn Y is broken,
similarly to the case of the first yarn breakage.
In step S112, the control section 11 i-nterrupts the
formation of the package P. As described above, the control
section 11 interrupts the formation of the package P by
stopping the rotation of the package P.
In step S:1.13, the conkrol seci-.ion 11 cnnsiders whether or
not the spun yarn Y is cut by tlie cutter 62. Speci.fic:al.ly,
i.he control sect:i~on 111. grasps whether or not t.he spun yarn Y
is cut by the cutter 62 based on presence or absence of: the
cutting signal. If the spun yarn Y is cut by the cutter 62,
the process proceeds to step S33~'7, and if the spun yarn Y js
noL cut by the cuttcr 62, the process proceeds to step Slid.
A case where the spun yarn Y is cut by the cutter 62 is
assumed to be a state in which the spun yarn Y is cut to
remove t:lie tic?fei:l.:i.vi-. part. A cirsr? where hhc spun yarn Y is
not c u t by {:.he ~cuLL.cr 62 i.s assumed t;o he a st-.al:e in which i.11e
spun yarn Y wound around the yarn supplying bobbin SU is
entirely unwound or a state in which the spun yarn Y is broken
by application of an abnormal tension on the spun yarn Y.
In step 5114, the determination sect.ion lld considers
whether or not the spun yarn Y is broken by appl-ication of an
abnormai t e n s i o n on t h e spun yarn Y. SpecifficaLly, t h e
d e t e r m i n a t i o n s e c t i o n l l d g r a s p s whether o r not t h e spun yarn
Y is broken by a p p l - i c a t i o n of an abnormal t e n s i o n based on t h e
t e n s i o n value s t o r e d i n s t e p S I I I . . I f t h e spun yarn Y is
broken by appli.cation o f a n abnormal t e n s i o n on t h e spun yarn
Y, t h e process proceeds t o s t e p S1.1.5, and i f t h e spun yarn Y
is broken without a p p l i c a t i o n o f a n abnormal. t e n s i o n on t h e
spun yarn Y, t h e process proceeds t o s t e p S116.
A case where t h e spun yarn Y is broken by a p p l i c a t i o n of
an abnormal t e n s i o n on t h e spun yarn Y is assumed, f o r example,
t o be a s t a t e i n which t h e spun yarn Y is caught or e n t a n g l e d
a t t h e flaw of t h e yarn suppiying bobbin SB. A case where t h e
spun yarn Y is broken without a p p l i c a t i o n of an abnormal
t e n s i o n on t h e spun yarn Y is assumed t o be a s t a t e i n which
t h e spun yarn Y wound around t h e y a r n s u p p l y i n g bobbin SB is
e n t i r e l y unwound.
i n st-ep S11.5, t h e determinat:i.on s e c t i o ~L~ d c o l ~ s i d e r s
whether o r not an elapsed time a f t e r t h e formation o:f t h e
package P is resumed u n t i l t h e yarn breakage o f t h e spun yarn
Y is d e t e c t e d is i.ess than a predeL.erlni.iied Lirrie. Speci.fj.cally,
t h e d e t e r m i n a t i o n secti.on l l d g r a s p s whether o r not.. t h e
el-apsed t i m e is i.ess than t h e predetermined time by measuring
t h e e l a p s e d time a f t e r t h e formation o r t h e package P :i.s
resumed unt.i.1. t h e yarn breakage o f t h e spun yarn Y is d e t e c t e d .
I f t h e e l a p s e d time :is l~ess than ttie predetermined t i h e , t h e
process proceeds t o s t e p Sll.6, and i f t h e el.apsed time i.s not
l e s s than t h e predetermi.ned time, t h e p~:ocess proceeds t-.o s t e p
Sl 3 ' 7 . 'rhi s makes t h e control. mode d:i.fferent from t h e cont-1:o:l
mode a t t h e time of t h e f i r s t yarn breakage.
111 a case where t.he f i . r s t yarn breakage is caused by
a p p l i c a t i o n o f a n excessi-ve t e n s i o n on t h e spun yarn Y and t h e
e l a p s e d time a f t e r t h e formation of t h e package P is resumed
u n t i l t h e second yarn breakage is d e t e c t e d is 1-ess than t h e
predetermiLned t i m e , it is assumed t h a t t h e spun yarn Y i.s
caught or e n t a n g l e d a t the f.l.aw of t h e yarn suppiyi.rig b0bb:i.n
SB.
In s t e p 5116, t h e c o n t r o l s e c t i o n II r e p l a c e s t h e yarn
supplying bobbin SR. A s d e s c r i b e d above, t h e c o n t r o l s e c t i o n
3.1 i . n s t r u c t s t h e di.scharge of t h e y a r n s u p p l y i n g bobbin SB t o
t h e yarn supplyi~ng s e c t i o n I and i n s t r u c t s t h e supply of a new
y a r n s u p p l y i n g bobbin SR t o t h e y a r n s u p p l y i n g bobbin
supplying s e c t i o n 12 ( s e e black arrows i n FIG. 2 and FIG. 3 ) .
In s t e p S11.7, t h e c o n t r o l s e c t i o n 11 j o i n s t h e spun yarn Y
from t h e y a r n s u p p l y i n g s e c t i o n I and the spun yarn Y from t h e
winding s e c t i o n 8. The o p e r a t i o n of joi.ning t h e spun yarns Y,
t h a t i s , t h e yarn j o i n i n g o p e r a t i o n is a s d e s c r i b e d above.
In s t e p S11.8, t h e c o n t r o l s e c t i o n 11 resumes t h e formation
of t h e package P. The c o n t r o l s e c t i o n 11 resumes t h e
formation o f t h e package P by r o t a t i n g t h e package P.
A s d e s c r i b e d above, .i.n t h e f i . r s t c o n t r o l mode, when t h e
yarn detecti.ng s c c t i o n 6 g i n d e t e c t s t h e yarn breakage of
t h e spun yarn Y a f t e r resuming t h e formation of t h e package P
and t h e t e n s i o n d e t e c t i o n s e c t i o n 4 d e t e c t s a value g r e a t e r
than o r eqiia.1. t o a predetetrmined v a l u e , and t h e elapsed time
a f t e r t h e formation of t h e package P is resumed u n t i l t h e yarn
breakage o:T t h e spun yarn Y is d e t e c t e d is l.ess than t.he
predetermined t:i.me, d e t e r m i n a t i o n is made t h a t t h e spun yarn Y
wound around t h e yarn supplyi.ng bobbin SR cannot be unwound
(see s t e p S13.4 and s t e p S115). 'Therefore, t h e winding device
100 promptl~y and a c c u r a t e l y determines t h a t t h e spun yarn Y
wound around t h e y a r n s u p p l y i n g bobbin 513 cannot be unwound,
t h a t is, the yarn suppl ying hohbin SA i.s abnormal. :In t h i s
contro:L mode, deterrninat:i..on i s made a s t o whether: o r not t h e
yarn suppl.yi.ng bobbin SB is dbilonildl when t h e second yarn
breakage is d e t e c t e d , but t h e number of times t h e yarn
breakage is d e t e c t e d is n o t l i m i t e d t h e r e t - o .
Accordi.ng t o such a c o n t r o l mode, t h e winding device 100
can promptly and a c c u r a t e l y determine t h a t t h e yarn supplying
bobbin SB is abnormal. Accordingly, t h e r e p e t i t i o n o:E t h e
yarn joiniriq o p e r a t i o n can be avoi.ded by r e p l a c i n g t h e yarn
supplying bobbin SB, and t h e o p e r a t i o n r a t e of t h e wi.nding
device 100 can be improved. The lowering of t h e q u a l i t y of
t h e package P can a l s o be prevented.
Next, t h e :second c o n t r o l mode a t t h e time of t h e second
yarn breakage w i l l be d e s c r i b e d with r e f e r e n c e t o FIG. 6.
In t h e second c o n t r o l mode as w e l l , t h e c o n t r o l mode a t
t h e t i m e of t h e f i r s t yarn breakage is s i m i l a r t o t h e c o n t r o l
mode d e s c r i b e d above. In o t h e r words, t h e c o n f i g u r a t i o n from
s t e p S101. t o s t e p S107 is s i m i l a r j.n t h e second c o n t r o l mode
a s w e l l . Therefore, d e s c r i p t i o n w i l l be made h e r e i n from s t e p
S211..
In s t e p S211, t h e c o n t r o l s e c t i o n 1.1. yrasps t h a t t h e spun
yarn Y is broken again based on t h e a n a l y s i s r e s u l t of t h e
a n a l y z e r 61. In t h i s c a s e , t h e determ.i.nati.on s e c t i o n l l d
s t o r e s Ll~e Lerision value of when t h e spun yarn Y .i.s broken,
similar1.y t o t h e f i r s t yarn breakage.
In s t e p 5212, t h e c o n t r o l s e c t i o n IS. i n t e r r u p t s t h e
formation of t h e package I?. As descri.bec1 above, t h e contiul.
s e c t i o n 11 i n t e r r u p t s t h e formation o:C t h e package P by
stoppiny t h e r o t a t i o n of t h e package P.
in s t e p S213, t h e c o n t r o l secti.011 11. c o n s i d e r s whether o r
not t h e spun yarn Y j.s c u t by t h e c u t t e r 62. S p e c i f i c a l l y ,
t h e control. s e c t i o n 11 g r a s p s whether o r n o t thc? spun yarn Y
i.s c u t by t h e cutLer 62 based on t h e presence o r absence o f
t h e cuttiinq s i y n a l . . If t h e spun yarn Y i.s c u t by t h e c u t t e r
62, t h e p r o c e s s proceeds t o s t e p S218, and if $-.he spun yarn Y
is not c u t by t h e c u t t e r 62, t h e process proceeds Lo s t e p $214.
A c a s e where t h e spun yarn Y is c u t by Lhe c u t t e r 62 is
assumed t o be a s t a t e i n whi.ch t h e spun yarn Y is cut t o
remove t h e d e f e c t i v e p a r t . A case where t h e spun yarn Y is
not c u t by t h e c u t t e r 62 is assumed t o be a s t a t . e i n which t h e
spun yarn Y wound around t h e yarn suppl.ying bobbin SB is
e n t i r e l y unwound o r a s t a t e i n which t h e spun yarn Y is broken
by a p p l i c a t i o n o f a n abnormal t e n s i o n on t h e spun yarn Y.
In s t e p 5214, t h e d e t e r m i n a t i o n s e c t i o n l l d c o n s i d e r s
whether o r not t h e spun yarn Y is broken by a p p l i c a t i o n o f a n
abnormal t e n s i o n on t h e spun yarn Y . S p e c i f i c a l l y , t h e
determi-nation s e c t i o n i l d grasps whether o r not t h e spun yarn
Y is broken by a p p l i c a t i o n of an abnormal t e n s i o n based on t h e
tensi-on value s t o r e d i n s t e p S 2 l l . I f t h e spun yarn Y is
broken by a p p l i c a t i o n of an abnormal t e n s i o n on t h e spun yarn
Y, t h e process proceeds t o s t e p S215, and i f t h e spun yarn Y
j.s broken w:i.thout a p p l i c a t i o n o f a n abnormal t e n s i o n on t h e
spun yarn Y, t h e process proceeds t o s t e p S217.
A c a s e where t h e spun yarn Y is broken by a p p l i c a t i o n of
an abnormal Lension 011 t h e spun ydrn Y i s assumed, t o r example,
t o be a s t a t e i n which t h e spun yarn Y is caught or entangl-ed
a t t h e flaw of t h e y a r n s u p p l y i n g bobbin SB. A case where t h e
spun yaxri Y is broken without a p p l i c a t i o n of an abnormal
t ~ e n s i o n on t h e spun yarn Y is assumed t o be a s t a t e i n which
t h e spun yarn Y wound around t h e yarn supplying bobbin SB is
e n t i r e l y unwound.
In s t e p 5215, a s t h e c a u s e o f t h e Lirst yarn breakagc, t h e
d e t e r m i h a t i o n s e c t i o n l l d c o n s i d e r s whether o r not t h e spun
yarn Y i.s brolten by appl.icaLi.on o f a n e x c e s s i v e t e n s i o n on t h e
spun yarn Y . S p e c i f i c a l l y , t h e determindti-on s e c t i o n :L:l,d
g r a s p s whether o r not t h e spun yarn Y i s broken by appLication
of a n e x c e s s i v e t e n s i o n based on t h e terlsion value s t o r e d i n
s t e p 5203 (correspondinq t o s t e p 5 1 0 1 ) . 3f t h e spun yarn Y i s
broken by a p p l i c a t i o n of a n e x c e s s i v e t e n s i o n on t h e spun yarn
Y, t h e p r o c e s s proceeds t o s t e p S21.6, and i f t h e spun yarn Y
i.s broken without a p p l i c a t i o i n o f a n e x c e s s i v e teris:i.on on t h e
spun yarn Y, t h e process proceeds t o s t e p S218. This a s p e c t
makes t h e c o n t r o l mode d i f f e r e n t from t h e f i r s t c o n t r o l mode
a t t h e t i m e of t h e second y a r n b r e a k a g e .
In a c a s e where t h e f i r s t and second yarn breakages a r e
caused by a p p l ~ i c a t i . o n of an excessi.ve (abnormal) tensiion or1
t h e spun yarn Y, it is r e l i a b l y assumed t h a t l.he spun yarn Y
is caught o r e n t a n g l e d a t t h e f l a w o f t h e yarn supplyiing
bobbin SB.
In s t e p S216, t h e d e t e r m i n a t i o n s e c t i o n 11d c o n s i d e r s
whether o r n o t a n elapsed t i m e a f t e r t h e formati-on of t h e
package P is resumed u n t i l t h e yarn breakage o f t h e spun yarn
Y is d e t e c t e d is less than a predetermined time. Specifical.l.y,
t h e determi-nation s e c t i o n l % d grasps whether or n o t t h e
el-apsed ti.me is :lless than t-he predei-.ermined time. by measuring
t h e e l a p s e d time a f t e r t h e formation o f t h e package P is
resumed u n t i l t h e yarn breakage of t h e spun yarn Y is d e t e c t e d .
I:f t h e rel-evant e l a p s e d time is l e s s than t h e predetermined
time, t h e process proceeds t o s t e p 5217, and i f t h e r e l e v a n t
e l a p s e d ti.me is not l.ess than t h e predetermined t i m e , t h e
process proceeds t o s t e p S218.
In a case where t h e f i r s t y a r n breakage is caused by
a p p l . i c a t i o n of an e x c e s s i v e t e n s i o n on t h e spun yarn Y and t h e
e:i.apsed time a f t e r t h e tormation of t h e paclcage P i.s resumed
u n t i l . h e second yarn breakage i.s detecLed is l.c?ss than t h e
predetenn.i.ned tj.me, it is r e l - i a b l y assumed t h a t t h e spun yarn
Y is caughi: o r entailgl.ed a t t h e fl~aw of t h e yarn suppl~ying
bobbin SIS.
In s t e p S2:1.'7, t h e c o n t r o l secti.on 11 rep:l.aci?s t h e ya:rn
supplyi.ng b0bbi.n SB. As described above, t h e control. s e c t i o n
I.3. i . n s t r u c t s t h e di.scharge of t h e yarn suppl.ying b0bbi.n SB t o
t h e yarn suppl.yi.ng s e c t i o n :I., and j n s t r u c t s t h e slipply n i a
new yarn supplying bobbin SB t o t h e yarn suppl.ying b0bbi.n
supplying s e c t i o n 12 ( s e e black arrows i n FIG. 2 and FIG. 3).
I11 s t e p S218, the c o n t r o l s e c t i o n 1 3 j o i n s t h e spun yarn Y
from t h e y a r n s u p p l y i n g s e c t i o n 1 and t h e spun yarn Y from t h e
winding s e c t i o n 8. The o p e r a t i o n of j o i n i n g t h e spun yarns Y ,
t h a t is, t h e yarn j o i n i n g o p e r a t i o n is a s d e s c r i b e d above.
In s t e p S219, t h e c o n t r o l s e c t i o n I1 resumes t h e formation
of t h e package P. The control. secti.on 1.11. resumes t h e
formation of t h e package P by r o t a t i n g t h e package P.
A s d e s c r i b e d above, i n t h e second c o n t r o l mode, when t h e
yarn d e t e c t i - n g s e c t i o n 6 again d e t e c t s t h e y a r n breakage o f
t h e spun yarn Y a f t e r resuming t h e formation of t h e package P
and t h e tensi.on d e t e c t i o n s e c t i o n 4 d e t e c t s a value g r e a t e r
than o r equal t o a predetermined v a l u e , and when t h e t e n s i o n
d e t e c t i o n s e c t i o n 4 d e t e c t s a value g r e a t e r than o r equal t o a
predetermined value before resuming t h e formation o f t h e
package P and t h e el.apsed time a f t e r t h e formation of <-.he
package P is resumed u n t i l t h e yarn breakage of t h e spun yarn
Y is d e t e c t e d is l e s s than t h e predetermined time,
determi-nation is made t h a t t h e spun yarn Y wound around t h e
yarri supplying bobbin SB cannot be unwound ( s e e s t e p 5214,
s t e p S215, and s t e p S216). Therefore, t h e winding devi.ce 100
promptly and a c c u r a t e l y determines t h a t t h e spun yarn Y wound
around t h e yarn supplying bobbin SU cannot be unwound, t h a t is,
t h e yarn supplying bobbin SB :i.s abnormal. In t h i s c o n t r o l
mode, d e t e r m i n a t i o n is made a s t o whether o r not t h e yarn
s~~pply.i.i?hyo bbi.n SB is abnormal. wheln t h e second yarn breakaye
is det.ected, but t h e number of times t h e yarn breakage is
d e t e c t e d is not l i m i t e d t h e r e t o .
According t o such a c o n t r o l mode, t h e winding device 100
can prompt::l.y and a c c u r a t e l y determine t h a t t h e y a r n s u p p l y i n g
bobbin SD is abnormal. Accordingl~y, t h e repeti.ti.on of t h e
yarn joi.riiny o p e r a t i o n can be avo:ided by repl.acinq t h e yarin
supplying bobbin SB, and t h e o p e r a t i o n r a t e of tho winding
device I 0 0 car) be improved. 'I'he 1owcri.ng of t h e cluality of
the package P can a l s o be p r e v e n t e d .
A s d e s c r i b e d above, t h e w:i.ridi.ng d e v i c e 100 can r e p l a c e tile
yarn suppl.ying bobbin SB by t h e i n s t r u c t i o n of t h e control.
sectj.on 3 . 1 . This can be r e a l i z e d by i n c l u d i n g t h e yarn
supplying bobbin suppl-ying s e c t i o n :L2 and t h e yarn supplyi.ng
bobbin c o l l e c t i n g s e c t i o n 13.
According t o such a c o n f i - g u r a t i o n , t h e winding d e v i ~ c e 1.00
can d i s c h a r g e t h e yarn supplyj~ng b0bbi.n SB, from whi.ch t h e
spun yarn Y cannot be unwound, and can r e c e i v e t h e supply of a
new yarn suppl.y:i.ng bobbin SB. Accordf~ngly, t h e r e p e t i t i o n of
t h e yarn j o i n i n g o p e r a t i o n can be avoi.ded, and t h e o p e r a t i o n
r a t e o:f t h e winding d e v i c e 100 can be i.mproved. 'urthermore,
t h e lowering o f t h e q u a l i t y of t h e package P can a l s o be
prevented.
A second a s p e c t of t h e i n v e n t i o n r e l a t e s t o t h e wj.nding
device according t o t h e f i r s t a s p e c t , wherein t h e
d e t e r m i n a t i o n s e c t i o n f u r t h e r determi.nes t h a t t h e yarn
supplying bobbin is abnormal when t h e t e n s i o n d e t e c t i n g
sectj.on d e t e c t s a value g r e a t e r than o r equal t o a
predeter:rrij.r~ed value upon yarn breakage immediate1.y b e f o r e t h e
yarn j o i n i n g s e c t i o n j o i n s t h e spun yarn t:o resume t h e
formation of t h e package.
A t h i r d a s p e c t of t.he i n v e n t i o n r e l a t e s t o t h e windfing
d e v j c e according t o t h e f i r s t o r second a s p e c t , wherein t h e
deterniinati.on s e c t i o n furl-her determines t h a t t h e yarn
supply-ing bobbin i.s abnormal when an e:l.a]:>sed t i h e a l t e r 1.21~
formation 01: Lhe package is resumed u n t i l t h e yarn breakage o:f
t h e spun yarn is d e t e c t e d is less than a predetermined t i m e .
A f o u r t h a s p e c t of t h e i.nvention r e l a t e s t o t h e winding
device accordj.ng t o any one oi' t h e f i . r s t t o t h i ~ r d a s p e c t s , t h e
d e v i c e Curther i n c l u d i l l g a yarn supplying bobb:in suppl.yi.ng
sect.i.on adapted t o s u p p l y a new yarn supplyi.ny b0bbi.n t o t h e
y a r n s u p p l y i n g s e c t i o n , wherein when t h e d e t e r m i n a t i o n s e c t i o n
detemr:i.nes t.ha1-. t h e yarn supplying bobbin is abnorlnal, the
c o n t r o l s e c t i o n d i s c h a r g e s t h e y a r n s u p p l y i n g bobbin from t h e
yarn supplyiny secL.io11 arid i r i s i r u c t s t h e y a r n s u p p l y i n g bobbin
suppl-ying s e c t i o n t o supply a new y a r n s u p p l y i n g bobbin.
A f i f t h a s p e c t of t h e i n v e n t i o n r e l a t e s t o a wj.nding
method of a winding d e v i c e adapted t o wind a spun yarn unwound
f r o n l a y a r n s u p p l y i n g bobbin t o form a package, t h e method
inc:l.uding determining that the yarn supplying bobbj~ri is in an
abnormal state when the spun yarn is broken by appli.cati.on of
an excessive tension after the spun yarn is joined to resume
the formation of the package.
A sixth aspect of the i.nventi.on relates to the winding
method according to the fj.:Eth aspect, the method including
determining that the yarn supplying bobbin is in the abnormal
state when an elapsed time after the formation of the package
is resumed unti~l the yarn breakage of the spun yarn is
dctectcd is less than a predetermined time.
A seventh aspect of the invention relates to the winding
method according to the fifth or sixth aspect, the method
including discharging the yarn supplying bobbin arid supplying
a new yarn supplying bobbin when determined that the yarn
supplying bobbin is in the abnormal state.
According to the second aspect, determination can be made
prompt1.y and accurately that the yarn suppl.yi.riy bobbin i:j
abnoirmal.. Accordi.ngl.y, the repetiti.on of the yarn joining
operation can be avoi.ded by replaci-ng the yarn suppl.yi.nq
bobbin, and the operation rate of the winding device can be
improved. The l.owerinq of the quality of the package can also
be prevented.
Accord:i.ng to t.he third aspect, determination can be made
prompt:i.y and accurately that the yarn supplying b0bbi.n is
abnormal. Accordingly, thc repeti.tion of the yarn joi-ning
operation can be avoided by replacing the yarn supplying
bobb-in, and the operati-on rate oi the windi.ng device can be
improved. The 1.owe.r.ing of the yun1.ity of the packaqc can alsrr
be prevented.
According to the fourth aspect, the yarn supplying bobbin
that is determined as abnormal can be discharged, and a new
yarn supplying bobbi~n can be suppl-ied. Accordingly, the
repetzition of the yarn join-ing operation can be avoided, and
the operation rate of the winding device can be improved. The
lowering of the quality of the package can also be prevented.
Accordj.ny to the fifth aspect, determination can be made
that the yarn supplying bobbin is in an abnormal state.
Accordingly, the repeti.ti.on of the yarn joining operation can
be avoided by replacing the yarn suppl.yi.ng bobbi~n, and the
operatj-on rate of the winding device can be improved. The
lowering of the quality of the package can also be prevented.
According to the si.xth aspect, determination can be made
promptly and accurately that the yarn supplying b0bbi.n is
abnormal. Accordinqly, the repetition of the yarn -joininq
operation can be avoided by replacing the yarn supplying
bobbin, and the operation rate of the winding device can be
improved. The lowering of the quality of the package can also
be prevented.
Accordi-ng to the seventh aspect, the yarn supplying bobbin
that is determined to be in the abnormal state can be
discharged and a new yarn suppl.ying bobbin can be suppl.i.ed.
Accordingly, the repetition of the yarn joj.nirig operation can
be avoi-ded, and the operation rate of the winding devi.ce can
be improved. '?he lowering o:f the quality of the package can
also be prevented.
WE CLAIM:
1. A winding device c h a r a c t e r i z e d i n t h a t :
a y a r n s u p p l y i n g sectiion adapted t o support a yarn
supplying bobbin;
a winding s e c t i o n adapted t o wind a spun yarn unwound from
t h e y a r n s u p p l y i n g bobbin t o form a package;
a t e n s i o n d e t e c t i n g s e c t i o n adapted t o d e t e c t a t e n s i o n of
t h e spun yarri fed from t h e y a r n s u p p l y i n g s e c t i o n t o t h e
winding s e c t i o n ;
a yarn d e t e c t i n g s e c t i o n adapted t o d e t e c t yarn breakage
of t h e spun yarn fed from t h e yarn supplying s e c t i o n t o t h e
winding secti-on;
a y a r n j o i n i n g s e c t i - o n adapted t o j o i n a spun yarn from
t h e yarn supplying s e c t i o n and a spun yarn from t h e winding
s e c t i o n when t h e yarn d e t e c t i n g s e c t i o n d e t e c t s t h e yarn
breakage o f t h e spun yarn;
a c o n t r o l s e c t i o n adapted t o cause t h e yarn join:i.ng
s e c t i o n t o j o i n t h e spun yarn t o resume t h e formati.on of t h e
package; and
a d e t e r m i n a t i o n sect:ion adapted t o determine t h a t t h e yarri
supply:i.ny b0bbj.n is abnormal when t h e yarn d e t e c t i n g s e c t i o n
d e t e c t s t h e yarn breakage of t h e spun yarn and t h e tensiion
d e t e c t i n g s e c t i o n d e t e c t s a value g r e a t e r than o r equal t o a
predetermined v a l u e .
2 . Thc w:indi.ng d e v i c e accordi.nq l.o c1.n:i.m I., whcre:i.n t h c
d e t e r m i n a t i o n s e c t i o n determines t h a t t h e yarn suppllying
bobbin is abnormal when t h e t e n s i o n d e t e c t i n g s e c t i o n d e t e c t s
a value g r e a t e r than o r equal t o a p r e d e t e r m i n e d value upon
yarn breakage immediately b e f o r e t h e yarn j o i n i n g s e c t i o n
j o i n s t h e spun yarn t o resume t h e formation of t h e package.
3. 'I'he winding d e v i c e according t o claim I o r 2 , wherein t h e
d e t e r m i n a t i o n s e c t i o n determines t h a t t h e yarn supplying
bobbin i s abnormal when an elapsed t i m e a f t e r t h e formation of
t h e package is resumed u n t i l t h e y a r n breakage of t h e spun
yarn is d e t e c t e d is less than a predetermined t i m e .
4 . The winding d e v i c e according t o any one of claims 1 t o
3, f u r t h e r c h a r a c t e r i z e d by coir~prisirlq a yarn supp:l.yi.rlg bobbin
u p p l y i n g s e c t i o n adapted t o supply a new yarn supplyi.ng
bobbin t o t h e yarn supplying s e c t i o n , wherein
when t h e determj-nation s e c t i o n determines t h a t t h e yarn
supplying b0bbi.n i.s abnormal, t h e c o n t r o l s e c t i o n dj-scharges
t h e y a r n s u p p l y i n g bobbin from t h e y a r n s u p p l y i n g s e c t i o n and
i n s t r u c t s t h e yacn supplying bobbin suppl-ying s e c t i o n t o
supply a new y a r n s u p p l y i n g bobbin.
5. A wj.nding method f o r a winding device adapted t o wind
a spun yarn unwound from a y a r n s u p p l y i n y b0bbi.n t o form a
package, t h e method c h a r a c t e r i z e d i n t h a t :
deilerinjning t h a t t h e yarn supplyi.ng bobbin :iis iin an
abnormal s t a t e when t h e spun yarn j.s broken by a p p l i c a t i - o n of
a n e x c e s s i v e t e n s i o n a f t e r t h e spun yarn is joined t o resume
t h e formation of t h e package.
6 . The w:i.nding method accordirig t o claim 5, wherein:
det(?~-mining t h a t - t h e yarn slippl yjng hohhin i s -in (-he
abnormal stat:e when an e:l.apsed time a f t e r t h e f o r i ~ ~ a t i ~oofn tho
package is resumed u n t i l t h e yarn breakage o f t h e spun yarn is
d e t e c t e d is less than a p r e d e t e r m i n e d t i m e .
' 7 . The winding method according t o c1.ai.m 5 o r 6, wherein:
d i s c h a r g i n g t h e y a r n s u p p l y i n g b0bb:i.n and supplying a new
yarn supplying bobbin when it is determined t h a t t h e yarn
supplying bobbin is i n t h e abnocmai s t a t e .