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EP0099254B1 - Dispositif de contrôle des lisses - Google Patents

Dispositif de contrôle des lisses Download PDF

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Publication number
EP0099254B1
EP0099254B1 EP83303989A EP83303989A EP0099254B1 EP 0099254 B1 EP0099254 B1 EP 0099254B1 EP 83303989 A EP83303989 A EP 83303989A EP 83303989 A EP83303989 A EP 83303989A EP 0099254 B1 EP0099254 B1 EP 0099254B1
Authority
EP
European Patent Office
Prior art keywords
arm
retention
pole
electromagnet
latch
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
Application number
EP83303989A
Other languages
German (de)
English (en)
Other versions
EP0099254A2 (fr
EP0099254A3 (en
Inventor
John Dalton Bonas Machine Company Ltd. Griffith
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.)
Textilma AG
Original Assignee
Textilma AG
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 Textilma AG filed Critical Textilma AG
Publication of EP0099254A2 publication Critical patent/EP0099254A2/fr
Publication of EP0099254A3 publication Critical patent/EP0099254A3/en
Application granted granted Critical
Publication of EP0099254B1 publication Critical patent/EP0099254B1/fr
Expired 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

  • the present invention relates to a retention device for a heald rod.
  • the U.K. patent application No. 2 047 755 discloses a heald control means including two flexible retention elements and an electromagnet located between said retention elements in order to move the retention elements with regard to the electromagnet and to engage the retention elements with the heald rods.
  • the retention elements are fixedly mounted to a support block, to which the electromagnet is mounted, too.
  • the retention elements are provided with a latch formation.
  • This device has the disadvantages that a relatively strong magnetic field has to be generated in order to draw the retention elements against the pole of the electromagnet, and that the speed of operation is limited.
  • the invention as claimed is intended to provide a remedy. It solves the problem of how to design a retention device for a heald rod, in which the response time for deflecting the retention arm is quick due to the construction of the retention device and the positive and reliable operation of retaining the selected heald rod is ensured at high speed.
  • the intermediate portion 44 comprises both components 41 and 42 which are rigidly connected to one another.
  • Component 42 is preferably composed of a material which can be easily magnetised, such as soft iron, and basically acts as a pole piece for co-operation with the lower pole 46, preferably the portion 44 is arranged so that its upper end is in contact with the upper pole 47 of the electromagnet. Accordingly the intermediate portion serves to rigidify the arm below the upper portion and also provides a magnetic path so that the portion of component 42 adjacent the lower pole will be a magnetic pole thereby creating a strong attractive force due to polar attraction. Accordingly, the response time for deflection of arms 40 on energisation of the electromagnet 22 is very quick.
  • cams 66 are chosen so that when each arm 62 is in its raised position (which means that the rods 14 operated thereby have been lifted so that their terminal end is above the co-operating arm 40 of the retention device) there is an extended dwell time before lowering the arm.
  • This dwell time is advantageous in that it extends the period in which the retention device needs to operate to deflect is associated arms 40. Accordingly, since the response time for deflecting the arms 40 is quick due to the construction of the retention device and since there is a dwell time for enabling such response to take place it is possible for the loom to operate at high speeds whilst ensuring positive and reliable operation of retaining selected heald rods 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (3)

1. Dispositif de retenue pour une barre de lisse qui est animée d'un mouvement de va-et-vient en un trajet linéaire, le dispositif de retenue comprenant un bras d'arrêt (40) qui comporte à l'une de ses extrémités un profil de verrouillage (51) destiné à coopérer avec ladite barre de lisse (14) et qui est articulé sur un bloc de support (23) de telle manière que le profil de verrouillage soit mobile entre une position de verouillage et une position de non-verrouillage, un électro-aimant (22) dont au moins un pôle (46) est placé à proximité immédiate du bras d'arrêt (40), une pièce polaire (42) montée sur le bras d'arrêt (40) de manière à coopérer avec ledit pôle (46) de l'électro-aimant (22), et des moyens de sollicitation qui agissent sur le bras d'arrêt de telle manière que celui-ci soit normalement maintenu à distance dudit pôle (46), le bras d'arrêt (40) étant relié au bloc de support (23) par une partie élastique (43) qui constitue l'articulation et lesdits moyens de sollicitation, le bras comprenant un élément élastique (41) raccordé au bloc de support (23) et un élément rigide (42) fixé rigidement à l'élément élastique (41), l'élément rigide (42) constituant ladite pièce polaire et le profil de verrouillage.
2. Dispositif de retenue selon la revendication 1, dans lequel l'électro-aimant comporte un premier pôle placé près dudit profil de verrouillage et un second pôle situé à proximité immédiate du bras, masi à plus grande distance dudit profil de verrouillage, la pièce polaire s'étendant le long du bras de manière à pouvoir coopérer magnétique- ment avec les deux pôles.
3. Dispositif de retenue selon la revendication 1 ou 2, dans lequel la pièce polaire comporte une partie prolongée qui forme un crochet de façon à constituer ledit profil de verrouillage.
EP83303989A 1982-07-10 1983-07-08 Dispositif de contrôle des lisses Expired EP0099254B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8220129 1982-07-10
GB8220129 1982-07-10

Publications (3)

Publication Number Publication Date
EP0099254A2 EP0099254A2 (fr) 1984-01-25
EP0099254A3 EP0099254A3 (en) 1985-05-15
EP0099254B1 true EP0099254B1 (fr) 1988-12-07

Family

ID=10531611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83303989A Expired EP0099254B1 (fr) 1982-07-10 1983-07-08 Dispositif de contrôle des lisses

Country Status (4)

Country Link
EP (1) EP0099254B1 (fr)
DE (1) DE3378642D1 (fr)
HK (1) HK3090A (fr)
SG (1) SG43689G (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8827141D0 (en) * 1988-11-21 1988-12-29 Bonas Machine Co Heald control device
US5095952A (en) * 1991-01-03 1992-03-17 Yu Hsiu Hsia Cheng Electromagnetic heald rod retention system for a jacquard system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098428A2 (fr) * 1982-07-01 1984-01-18 Textilma AG Dispositif de formation de la foule pour un métier à tisser

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH409810A (de) * 1963-02-13 1966-03-15 Oerlikon Buehrle Holding Ag Jacquardmaschine mit einzeln elektromagnetisch gesteuerten Litzen
CH550729A (de) * 1972-01-25 1974-06-28 Mueller Jakob Vorrichtung zum bewegen von fadenfuehrungseinrichtungen von textilmaschinen.
GB2047755B (en) * 1979-04-24 1983-03-30 Bonas Machine Co Loom heald control means

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098428A2 (fr) * 1982-07-01 1984-01-18 Textilma AG Dispositif de formation de la foule pour un métier à tisser

Also Published As

Publication number Publication date
DE3378642D1 (en) 1989-01-12
HK3090A (en) 1990-01-19
SG43689G (en) 1990-01-26
EP0099254A2 (fr) 1984-01-25
EP0099254A3 (en) 1985-05-15

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