EP0398829A1 - Negative Schaftmaschine mit Pendelschwinger für Webmaschinen - Google Patents

Negative Schaftmaschine mit Pendelschwinger für Webmaschinen Download PDF

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Publication number
EP0398829A1
EP0398829A1 EP90420236A EP90420236A EP0398829A1 EP 0398829 A1 EP0398829 A1 EP 0398829A1 EP 90420236 A EP90420236 A EP 90420236A EP 90420236 A EP90420236 A EP 90420236A EP 0398829 A1 EP0398829 A1 EP 0398829A1
Authority
EP
European Patent Office
Prior art keywords
hook
dobby
lock
bearing face
axis
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.)
Granted
Application number
EP90420236A
Other languages
English (en)
French (fr)
Other versions
EP0398829B1 (de
Inventor
Joseph Palau
Jean-Paul Froment
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.)
Staubli Faverges SCA
Original Assignee
Staubli Faverges SCA
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 Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP0398829A1 publication Critical patent/EP0398829A1/de
Application granted granted Critical
Publication of EP0398829B1 publication Critical patent/EP0398829B1/de
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
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D03C1/20—Hooks; Lifters

Definitions

  • the present invention relates to negative dobbies of the oscillating scale type, intended for controlling heald frames on weaving looms.
  • Figs. 1 and 2 of the attached drawing substantially reproduce FIGS. 3 and 4 of the above-mentioned request.
  • the reference 1 designates one of the balances of the dobby, moved cyclically around its point of articulation 2 by the two rear crosspieces 3, which form supports for the heel of the hooks 4 articulated at 5 at the ends of said balance 1
  • the articulation point 2 of the balance 1 is carried by a lever 6 coupled to the corresponding heald frame, the movements of the latter being controlled by a reading device 7 common to all the scales of the dobby.
  • each hook 4 is associated with a lock 8 with two arms, which is articulated on an axis 9 so as to tilt in one direction or the other under the effect of a pusher 10 actuated by the device. reading 7. It should be observed that the axis 9, thus disposed between the pivot 5 of the hook 4 considered and the bearing face 4 a of this hook with which the lock 8 is intended to cooperate by one of its arm, is located, not strictly on the straight line YZ or line of force which connects said axis 5 and face 4 a , but in an offset manner (distance d ) with respect to said straight line towards the outside, that is to say say in the direction of the body of the hook 4 conjugate, so as to generate a torque which tends to rotate the latch 8 and thus to apply the internal face of the hook 4 against the axis 9.
  • distance d offset manner
  • the locks 8 work in compression, so that they can have, to withstand without damage equivalent resistant forces, a reduced mass compared to conventional hooks working in bending.
  • the present invention mainly aims to remedy, which relates to the negative dobby defined in claim 1.
  • the invention consists in having at the edge of each hook which is turned inwards a profiled notch to receive the hub of the corresponding lock which is thus wrapped thereby ensuring the positive retention of the hook against any risk of dropping out.
  • the reference 14 designates a (actually the lower bracket) of the two hooks 15 pivoted at the ends of each balance 1, said hook 14 having a bearing face 14 is intended to cooperate with the end of the one of the two arms of a latch 18 mounted oscillating on an axis 19 and connected by a pusher 10 to the reading device, all as in fig. 1 and 2.
  • each hook 14 is profiled to comprise, on its edge facing the inside of the dobby, a notch 14b suitable for enveloping the hub 18 a of the lock 18 (or at least the pivot axis 19 thereof).
  • the hook 14 is positively retained in the three orientations N, S and O by the edge of its notch 14 b , and, in the fourth orientation E, by applying its bearing face 14 a against the end of the latch arm, apart from the declawing clearance.
  • the reversal of the offset of the axis 19 makes it possible to shorten and lighten both the hooks 14 of the dobby and the latches 18 associated with these, and this because said hooks require a less pronounced curvature at the same time as the length of the latches is likely to be reduced by avoiding any risk of interference at the level of the path X of the beak of each hook .
  • the overall size of the assembly is consequently reduced, which always constitutes a significant advantage in the construction of the dobbies.
  • the lightness given to the latches and the hooks makes it possible to reduce the inertia presented by these moving parts and to increase the speed of operation of the dobby, while limiting the efforts developed by the reading device for actuating the associated pushers 10 said locks.
  • the invention is applicable to dobbies of the "pulling scales" type in which the reciprocating movement of each balance 4 is ensured, no longer by thrust crosspieces, but by traction members in the form of hooks pivotally mounted on a pendulum arranged in front of the scales and connected to the dobby drive device in order to oscillate alternately in one direction and in the other, said members being controlled by the reading device of the dobby in order to ensure the actuation of each balance depending on the weave of the fabric to be produced, in the manner described in US patent No. 4,386,631 MIZOGUCHI.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Knitting Machines (AREA)
EP90420236A 1989-05-19 1990-05-17 Negative Schaftmaschine mit Pendelschwinger für Webmaschinen Expired - Lifetime EP0398829B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8906826A FR2647124B1 (fr) 1989-05-19 1989-05-19 Ratiere negative a balances oscillantes pour metiers a tisser
FR8906826 1989-05-19

Publications (2)

Publication Number Publication Date
EP0398829A1 true EP0398829A1 (de) 1990-11-22
EP0398829B1 EP0398829B1 (de) 1993-09-01

Family

ID=9381986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420236A Expired - Lifetime EP0398829B1 (de) 1989-05-19 1990-05-17 Negative Schaftmaschine mit Pendelschwinger für Webmaschinen

Country Status (10)

Country Link
US (1) US5031667A (de)
EP (1) EP0398829B1 (de)
JP (1) JPH03834A (de)
KR (1) KR0133657B1 (de)
BR (1) BR9002213A (de)
CZ (1) CZ278227B6 (de)
DE (1) DE69003006T2 (de)
ES (1) ES2043332T3 (de)
FR (1) FR2647124B1 (de)
RU (1) RU1769769C (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690465A1 (fr) * 1992-04-28 1993-10-29 Staubli Trumpelt Gmbh Maschine Dispositif de verrouillage et de pré-sélection pour ratières lourdes du type à pas ferme.
JP2866771B2 (ja) * 1992-09-24 1999-03-08 富士写真フイルム株式会社 シート体枚葉装置
CN101724953B (zh) * 2009-11-11 2011-04-27 常熟市常纺纺织机械有限公司 消极式多臂开口装置的拉钩快速复位机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1343419A (fr) * 1963-01-15 1963-11-15 Staubli Geb & Co Mécanique d'armures à double lève
EP0034045A1 (de) * 1980-02-07 1981-08-19 Yamada Dobby Co., Ltd. Negativ gesteuerte Doppelhub-Schaftmaschine
EP0274455A1 (de) * 1987-01-09 1988-07-13 S.A. DES ETABLISSEMENTS STAUBLI (France) Negative Schaftmaschinen mit Pendelschwinger
FR2610644A1 (fr) * 1987-02-05 1988-08-12 Staubli Sa Ets Perfectionnements aux ratieres negatives du type a balances oscillantes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543172B1 (fr) * 1983-03-22 1985-10-25 Staubli Sa Ets Perfectionnements aux ratieres a balances pour metiers a tisser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1343419A (fr) * 1963-01-15 1963-11-15 Staubli Geb & Co Mécanique d'armures à double lève
EP0034045A1 (de) * 1980-02-07 1981-08-19 Yamada Dobby Co., Ltd. Negativ gesteuerte Doppelhub-Schaftmaschine
EP0274455A1 (de) * 1987-01-09 1988-07-13 S.A. DES ETABLISSEMENTS STAUBLI (France) Negative Schaftmaschinen mit Pendelschwinger
FR2610644A1 (fr) * 1987-02-05 1988-08-12 Staubli Sa Ets Perfectionnements aux ratieres negatives du type a balances oscillantes

Also Published As

Publication number Publication date
DE69003006T2 (de) 1994-03-10
DE69003006D1 (de) 1993-10-07
KR900018439A (ko) 1990-12-21
KR0133657B1 (ko) 1998-04-24
BR9002213A (pt) 1991-08-13
ES2043332T3 (es) 1993-12-16
EP0398829B1 (de) 1993-09-01
FR2647124B1 (fr) 1991-07-12
CZ278227B6 (en) 1993-10-13
CS9002309A2 (en) 1991-08-13
RU1769769C (ru) 1992-10-15
FR2647124A1 (fr) 1990-11-23
JPH03834A (ja) 1991-01-07
US5031667A (en) 1991-07-16
JPH0360939B2 (de) 1991-09-18

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