EP0398829B1 - Negative Schaftmaschine mit Pendelschwinger für Webmaschinen - Google Patents
Negative Schaftmaschine mit Pendelschwinger für Webmaschinen Download PDFInfo
- Publication number
- EP0398829B1 EP0398829B1 EP90420236A EP90420236A EP0398829B1 EP 0398829 B1 EP0398829 B1 EP 0398829B1 EP 90420236 A EP90420236 A EP 90420236A EP 90420236 A EP90420236 A EP 90420236A EP 0398829 B1 EP0398829 B1 EP 0398829B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hook
- dobby
- lock
- bearing face
- pivot 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.)
- Expired - Lifetime
Links
- 230000000694 effects Effects 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 210000003323 beak Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
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 stalling, at the same time as shifting the pivot axis of this latch inward, that is to say in the direction of the pivot axis of the corresponding balance, relative to the line of force which joins the bearing face to the pivot axis of the envisaged hook.
- figs. 1 and 2 reproduce fig. 3 and 4 of patent application No. 87 00297/2 609 476 to which the present invention refers.
- Fig. 3 shows a hook-lock assembly of a dobby established in accordance with the invention.
- Fig. 4 illustrates the operation of the assembly according to FIG. 3.
- 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.
- 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 locks 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 conferred on 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 "pulled scales" type in which the reciprocating movement of each balance 4 is no longer provided by thrust crosspieces, but by traction members in the form of hooks pivotally mounted on a pendulum disposed 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 according to 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)
Claims (1)
- Negative Schaftmaschine mit Pendelschwinger für Webmaschinen, der Art, bei der jedes der Enden jedes Schwingers (1) mit einer Achse (15) versehen ist, auf der ein Haken (14) drehbar gelagert ist, der zusammenwirkt mit einem Riegel (18), schwenkbar auf eine Achse (19) montiert, um durch Schwenkung unter der Wirkung der Einlesevorrichtung (7) der Schaftmaschine gegen eine Stützfläche (14a) des betreffenden Hakens gebracht zu werden,
dadurch gekennzeichnet,
daß jeder Haken (14) an seinem nach innen gekehrten Rand eine Vertiefung (14b) aufweist, ausgeformt, um die Nabe (18a) des Riegels aufzunehmen, um das effektive Festsitzen nach allen Richtungen des genannten Hakens zu gewährleisten, wenn dessen Stützfläche (14a) an dem Riegel anliegt, während die Schwenkachse (19) dieses Riegels (18) nach innen verschoben ist, d.h. in Richtung der Schwenkachse (2) des entsprechenden Schwingers, bezüglich der Kraftlinie (Y-Z), welche die Stützfläche (14a) mit der Schwenkachse (15) des in Betracht gezogenen Hakens (14) verbindet.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8906826 | 1989-05-19 | ||
FR8906826A FR2647124B1 (fr) | 1989-05-19 | 1989-05-19 | Ratiere negative a balances oscillantes pour metiers a tisser |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0398829A1 EP0398829A1 (de) | 1990-11-22 |
EP0398829B1 true 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)
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 |
Family Cites Families (5)
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 |
JPS6017859B2 (ja) * | 1980-02-07 | 1985-05-07 | 株式会社山田ドビ− | 消極複動ドビ−機 |
FR2543172B1 (fr) * | 1983-03-22 | 1985-10-25 | Staubli Sa Ets | Perfectionnements aux ratieres a balances pour metiers a tisser |
FR2609476B1 (fr) * | 1987-01-09 | 1990-12-07 | Staubli Sa Ets | Perfectionnements aux ratieres negatives du type a balances oscillantes |
FR2610644A1 (fr) * | 1987-02-05 | 1988-08-12 | Staubli Sa Ets | Perfectionnements aux ratieres negatives du type a balances oscillantes |
-
1989
- 1989-05-19 FR FR8906826A patent/FR2647124B1/fr not_active Expired - Lifetime
-
1990
- 1990-05-04 US US07/519,672 patent/US5031667A/en not_active Expired - Lifetime
- 1990-05-10 CZ CS902309A patent/CZ278227B6/cs not_active IP Right Cessation
- 1990-05-11 BR BR909002213A patent/BR9002213A/pt unknown
- 1990-05-17 ES ES90420236T patent/ES2043332T3/es not_active Expired - Lifetime
- 1990-05-17 DE DE90420236T patent/DE69003006T2/de not_active Expired - Fee Related
- 1990-05-17 KR KR1019900007032A patent/KR0133657B1/ko not_active IP Right Cessation
- 1990-05-17 EP EP90420236A patent/EP0398829B1/de not_active Expired - Lifetime
- 1990-05-18 RU SU904743869A patent/RU1769769C/ru active
- 1990-05-18 JP JP2127072A patent/JPH03834A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
CZ278227B6 (en) | 1993-10-13 |
JPH0360939B2 (de) | 1991-09-18 |
DE69003006D1 (de) | 1993-10-07 |
ES2043332T3 (es) | 1993-12-16 |
US5031667A (en) | 1991-07-16 |
BR9002213A (pt) | 1991-08-13 |
CS9002309A2 (en) | 1991-08-13 |
FR2647124A1 (fr) | 1990-11-23 |
EP0398829A1 (de) | 1990-11-22 |
FR2647124B1 (fr) | 1991-07-12 |
RU1769769C (ru) | 1992-10-15 |
KR0133657B1 (ko) | 1998-04-24 |
KR900018439A (ko) | 1990-12-21 |
DE69003006T2 (de) | 1994-03-10 |
JPH03834A (ja) | 1991-01-07 |
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