EP0724032B1 - Dispositif de sélection de fil pour métier à tisser - Google Patents

Dispositif de sélection de fil pour métier à tisser Download PDF

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Publication number
EP0724032B1
EP0724032B1 EP19950100976 EP95100976A EP0724032B1 EP 0724032 B1 EP0724032 B1 EP 0724032B1 EP 19950100976 EP19950100976 EP 19950100976 EP 95100976 A EP95100976 A EP 95100976A EP 0724032 B1 EP0724032 B1 EP 0724032B1
Authority
EP
European Patent Office
Prior art keywords
thread
needle
hook
solenoid
disposed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19950100976
Other languages
German (de)
English (en)
Other versions
EP0724032A1 (fr
Inventor
Shigeyuki c/o Kayaba Kogyo K. K. Mutou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KYB Corp
Original Assignee
Kayaba Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to DE1995610907 priority Critical patent/DE69510907T2/de
Priority to EP19950100976 priority patent/EP0724032B1/fr
Publication of EP0724032A1 publication Critical patent/EP0724032A1/fr
Application granted granted Critical
Publication of EP0724032B1 publication Critical patent/EP0724032B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/20—Electrically-operated jacquards

Definitions

  • This invention relates to a thread selecting device whereby a weaving machine selects a thread according to a design or pattern of a woven article.
  • a thread selecting device such as, for example, a jacquard machine is used to select a thread according to the design to be woven.
  • Tokkai Hei 3-90646 published by the Japanese Patent Office for example discloses a device wherein a thread is selected using an electromagnetic solenoid type actuator driven by an electric signal.
  • This thread selecting device is provided above the body of the weaving machine, a knife being provided which rises and falls in conjunction with the operating cycles of the weaving machine.
  • the device moreover comprises numerous thread selecting units each consisting of a needle driven upwards by the knife, a hook that supports the needle in its raised position, and an electromagnetic solenoid that causes the hook to oscillate between the position for supporting the hook and a position wherein the hook is released.
  • the needle is connected to a thread via a number of mechanisms.
  • a thread is selected in the state when the needle is supported in the raised position, and the thread is deselected when the needle is released from the hook and descends.
  • the knife rises on each operating cycle of the weaving machine, and lifts the needle.
  • the hook engages with the needle when the solenoid is energized, and the needle is maintained in the raised position by the hook even after the knife has descended.
  • a required thread is selected from among a large number of candidate threads by selectively energizing the solenoid.
  • this invention provides a thread selecting device for use with a weaving machine, comprising a large number of selecting units each comprising a needle that selects a thread used by the weaving machine according to whether the needle is in a raised or lowered position, a hook supporting the needle in the raised position, a solenoid that moves the hook between a position wherein it engages the needle and a position wherein it releases the needle according to the energizing state of the solenoid, and a transmission member driving the needle upwards at every operating cycle of the weaving machine.
  • the device thereby selects a thread from a large number of candidate threads by selectively supplying an energizing current to the solenoid.
  • the device is characterized in that the solenoid and hook are disposed in a vertically staggered arrangement with respect to an adjacent solenoid and hook.
  • the solenoids and hooks disposed in a vertically staggered arrangement are contained in the same thread selecting unit.
  • solenoids and hooks disposed in a vertically staggered arrangement are contained in different thread selecting units.
  • hooks disposed in a vertically staggered arrangement are oriented in mutually opposing directions.
  • the needle engaging with the hook disposed in the upper part of the device is formed longer than the needle engaging with the hook disposed in the lower part of the device.
  • Fig. 1 is a side view of a weaving machine provided with a thread selecting device according to this invention.
  • Fig. 2 is a schematic side view of the thread selecting device.
  • Fig. 3 is a vertical sectional view of a thread selecting unit according to this invention.
  • Fig. 4 is a vertical sectional view of the essential parts of the thread selecting unit viewed from a direction perpendicular to that of Fig. 3.
  • a thread selecting device 2 is installed above a weaving machine 3, the device 2 being provided with a shaft 34 that operates in conjunction with a shaft 30 for driving the weaving machine 3.
  • the shaft 34 is connected to knives 7A, 7B that function as drive members via a cam 31, arm 32 and link mechanism 33, this shaft 34 alternately raising and lowering the knives 7A, 7B in synchronism with the weaving cycles of the weaving machine 3.
  • Engaging holes 40 are formed in the upper ends of the needles 4A, 4B.
  • Control threads 22 are connected to their lower ends, a common pulley 21 being suspended from the threads 22, and a thread 8 is also connected to the pulley 21.
  • the needles 4A, 4B are both in their raised positions, the thread 8 is pulled up via the pulley and is thereby selected.
  • the thread 8 is not pulled up and is thereby deselected.
  • the knives 7A, 7B rise and fall alternately, moreover, the needles 4A, 4B never descend together.
  • a hook 6A is supported free to pivot on a hinge 13 above the knife 7A, and a hook 6B is supported free to pivot on the hinge 13 adjacent to the hook 6A above the knife 7B.
  • the hooks 6A, 6B pivot according to the energizing of a solenoid 5 installed above them.
  • the hooks 6A, 6B are driven by the solenoid 5 via a mechanism shown in Fig. 4.
  • the exciting solenoid 5 attracts an armature 9 toward a yoke 10.
  • the hook 6A (6B) which is pushed by a spring 12 above the hinge 13, therefore comes into contact with the armature 9. Due to the attraction of the armature 9 to the yoke 10, the hook 6A (6B) pivots against the force of the spring 12, and a claw 60 at its lower end moves to a forward position.
  • the hook 6A pivots so as to push the armature 9 away due to the force of the spring 12, and the claw 60 moves to a retracted position.
  • the hook 6A (6B) pivots the claw 60 into its forward position so that the claw 60 enters the engaging hole 40 of the needle 4A (4B). After the knife 7A (7B) has descended, therefore, the needle 4A (4B) remains in its raised position.
  • the hook 6A (6B) which is not supporting the needle 4A (4B) pivots the claw 60 into its retracted position, while the hook 6A (6B) which is supporting the needle 4A (4B) remains in its forward position even after the energizing of the solenoid 5 is stopped.
  • the hook 6A (6B) which has supported the needle 4A (4B) pivots the claw 60 into its retracted position, and needle 4A (4B) is thereby released from the hook 6A (6B) so that it descends.
  • the hook 6A and 6B move according to the energizing of the common solenoid 5. If either the needle 4A or 4B is supported in its raised position by the hook 6A or 6B, the thread 8 is pulled up via the pulley 21 and selected when the other needle is raised. Also, if the claws 60 of the hook 6A and 6B are in their retracted positions, the other needle descends when either of the needles 4A, 4B is raised, so the thread 8 is not pulled up and is thereby deselected.
  • the single solenoid 5 is therefore sufficient to operate the two hooks 6A, 6B, although solenoids may also be provided separately for each hook.
  • the supply and interruption of energizing current to the solenoids 5 is controlled by a controller 1 shown in Fig. 1.
  • the aforesaid needles 4A, 4B, solenoid 5, and hooks 6A, 6B together comprise a thread selecting unit 23.
  • the thread selecting unit 24 comprises needles 25A, 25B, a solenoid 5, and hooks 6A, 6B.
  • the solenoid 5 and hooks 6A, 6B are precisely the same as those used in the thread selecting unit 23.
  • the thread selecting units 23, 24 are installed in a staggered vertical alignment inside a common holder 20.
  • the thread selecting unit 24 is disposed effectively directly above the thread selecting unit 23, and the claws 60 of the hooks 6A (6B) are oriented backwards in each unit.
  • the attraction of the armatures 9 by the solenoids 5 is therefore also oriented backwards.
  • the total projected surface area of the selecting units 23, 24 is effectively the same as that of a single unit alone.
  • the needles 25A, 25B of the selecting unit 24 are longer than the needles 4A, 4B of the selecting unit 23 by an amount corresponding to the vertical interval between the units 23 and 24.
  • the thread selecting device comprises selecting units 23, 24 consisting of large numbers of pairs formed as described hereintofore.
  • the units 23, 24 operate completely independently of each other inside the common holder 20, and as they are housed in the holder 20 in a staggered vertical arrangement, the space they occupy is effectively no different from the space that would be occupied by one unit 23 (24) alone. Compared to the conventional arrangement wherein the units were disposed adjacent to each other, therefore, far less space is occupied by the selecting units, and the plan dimensions of a thread selecting device containing a requisite number of selecting units are consequently smaller. In other words, more selecting units can now be contained within the same space, so it is possible to weave complex patterns that make use of large numbers of the threads 8.
  • the selecting units 23, 24 driving different threads 8 were disposed in a staggered vertical arrangement, however if the hooks 6A, 6B in the same unit are driven by different solenoids as mentioned hereinabove, the space occupied by the unit can also be reduced by vertically staggering the solenoids inside the unit in the same way.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (5)

  1. Un dispositif de sélection de fil (2), destiné à être utilisé avec un métier à tisser (3) comprenant un grand nombre d'unités de sélection (23, 24) comprenant chacune une aiguille (4A, 4B, 25A, 25B) qui sélectionne un fil (8) utilisé par le métier à tisser (3) selon le fait que ladite aiguille se trouve dans une position levée ou abaissée, un crochet (6A, 6B) supportant ladite aiguille (4A, 4B) dans la position levée, un solénoïde (5) qui déplace ledit crochet (6A, 6B), entre une position dans laquelle il s'engage dans ladite aiguille (4A, 4B, 25A, 25B) et une position dans laquelle il libère ladite aiguille d'après l'état d'activation dudit solénoïde, et un organe de transmission (7A, 7B) entraínant ladite aiguille (4A, 4B, 25A, 25B) vers le haut à chaque cycle de fonctionnement du métier à tisser (3), ledit dispositif sélectionnant le fil (8) à partir d'un grand nombre de fils candidats, en fournissant sélectivement un courant d'activation audit solénoïde (5), caractérisé en ce que
       ledit solénoïde (5) et le crochet (6A, 6B) sont disposés selon un agencement verticalement décalé par rapport à un solénoïde (5) adjacent et le crochet (6A, 6B).
  2. Un dispositif de sélection de fils (2) selon la revendication 1, dans lequel lesdits solénoïdes (5, 5) et les crochets (6A, 6B, 6A, 6B) disposés selon un agencement verticalement décalé sont contenus dans la même unité de sélection de fils (23).
  3. Un dispositif de sélection de fils (2) selon la revendication 1, dans lequel lesdits solénoïdes (5, 5) et les crochets (6A, 6B, 6A, 6B) disposés selon un agencement verticalement décalé sont contenus dans différentes unités de sélection de fils (23, 24).
  4. Un dispositif de sélection de fils (2) selon la revendication 1, dans lequel lesdits crochets (6A, 6B, 6A, 6B) disposés selon un agencement verticalement décalé sont orientés dans des directions mutuellement opposées.
  5. Un dispositif de sélection de fils (2) selon la revendication 1, dans lequel ladite aiguille (25A, 25B) s'engageant dans ledit crochet (6A, 6B) disposé dans la partie supérieure du dispositif, est formée de façon à être plus longue que ladite aiguille (4A, 4B) s'engageant dans ledit crochet (6A, 6B) disposé dans la partie inférieure du dispositif.
EP19950100976 1995-01-25 1995-01-25 Dispositif de sélection de fil pour métier à tisser Expired - Lifetime EP0724032B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1995610907 DE69510907T2 (de) 1995-01-25 1995-01-25 Fadenwahlvorrichtung für Webmaschinen
EP19950100976 EP0724032B1 (fr) 1995-01-25 1995-01-25 Dispositif de sélection de fil pour métier à tisser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19950100976 EP0724032B1 (fr) 1995-01-25 1995-01-25 Dispositif de sélection de fil pour métier à tisser

Publications (2)

Publication Number Publication Date
EP0724032A1 EP0724032A1 (fr) 1996-07-31
EP0724032B1 true EP0724032B1 (fr) 1999-07-21

Family

ID=8218935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950100976 Expired - Lifetime EP0724032B1 (fr) 1995-01-25 1995-01-25 Dispositif de sélection de fil pour métier à tisser

Country Status (2)

Country Link
EP (1) EP0724032B1 (fr)
DE (1) DE69510907T2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5806348A (en) * 1997-04-30 1998-09-15 Cheng; Chuan-Tien Heald rod retention device for a jacquard system
KR20010028662A (ko) * 1999-09-22 2001-04-06 박영승 전자식 복동 자카드 개구 장치
DE202004015676U1 (de) * 2003-09-20 2005-05-04 Piegeler, Gerhard Koppelungsvorrichtungen und HFA-und FA-Elemente für die Textiltechnik

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3713832C1 (de) * 1987-04-24 1988-06-23 Grosse Webereimaschinen Gmbh Platinen-Steuervorrichtung fuer Offenfach-Jacquardmaschine
JPH0647020Y2 (ja) * 1989-02-14 1994-11-30 株式会社武村製作所 ジャガード機の製織用針の押動制御装置

Also Published As

Publication number Publication date
DE69510907T2 (de) 1999-11-11
EP0724032A1 (fr) 1996-07-31
DE69510907D1 (de) 1999-08-26

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