EP0113816B1 - Procédé et dispositif pour la commande d'une ratière du type rotatif - Google Patents

Procédé et dispositif pour la commande d'une ratière du type rotatif Download PDF

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Publication number
EP0113816B1
EP0113816B1 EP83110517A EP83110517A EP0113816B1 EP 0113816 B1 EP0113816 B1 EP 0113816B1 EP 83110517 A EP83110517 A EP 83110517A EP 83110517 A EP83110517 A EP 83110517A EP 0113816 B1 EP0113816 B1 EP 0113816B1
Authority
EP
European Patent Office
Prior art keywords
movement
wedge
operating
drive shaft
gear shifting
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
EP83110517A
Other languages
German (de)
English (en)
Other versions
EP0113816A3 (en
EP0113816A2 (fr
Inventor
Walter Kleiner
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 AG (staubli Sa) (staubli Ltd)
Original Assignee
Staubli AG (staubli Sa) (staubli 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 Staubli AG (staubli Sa) (staubli Ltd) filed Critical Staubli AG (staubli Sa) (staubli Ltd)
Publication of EP0113816A2 publication Critical patent/EP0113816A2/fr
Publication of EP0113816A3 publication Critical patent/EP0113816A3/de
Application granted granted Critical
Publication of EP0113816B1 publication Critical patent/EP0113816B1/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
    • D03C1/00—Dobbies

Definitions

  • the invention relates to an operating method according to the preamble of claim 1 and a device according to the preamble of claim 3, as a possible variant of a dobby operating according to the method.
  • Such rotary dobby machines are known.
  • CH patents 512 605 and 517 192 Both versions have a switching link as a switching arm, the main shaft of the dobby being encompassed by the link and this executing a pivoting movement about a fixed axis in order to transmit the control impulses to the wedge.
  • the opening of the shift gate has a collar projecting axially to the main shaft as a closed control cam, which is constantly engaged with a groove in the shift key.
  • the switching arm must be very strong to prevent throwing, buckling and suspension, which is a heavy construction assumes that there is a certain inertia or, due to unexpected lateral friction, malfunction of the machine.
  • a first object of the invention is to increase the machine speed by changing the bearing and the control of the shift arm.
  • the CH patent 620 477 reading systems are known in which the model controls are transferred via a power amplifier to a shed formation mechanism, the Hattersley system, the main characteristic being that the power amplifier moves both the stylus against the sample card during its movement and thus initiates the reading process, and, with a corresponding reading, moves the control mechanism for the shaft actuating members in a force-increasing manner, and this force-increasing movement is aligned with the movement of the stylus.
  • the force amplifier only works if a different value is read from the stylus on the sample card.
  • the control parts are returned by the power amplifier.
  • the force amplifier only works if the stylus finds a hole in the sample card.
  • a return spring is arranged for returning the control parts.
  • the two designs have the feature that when a hole in the sample card is read by the stylus, the shaft is moved into the upright position or remains motionless.
  • the new task now consists in designing the needlework of a rotary machine in such a way that the transmission of the sample value is transmitted with increased force in the direction opposite to the scanning movement direction of the needle, in no case reversing levers for the control movement, as e.g. in the Swiss patent specification 621 157, the case must be used.
  • the actuating lever is designed as a pawl which can be pivoted transversely to its working movement direction, this non-positive working movement direction corresponding to the guiding direction of the shifting gate.
  • the pawl has a run-up curve located in the range of movement of the stylus, by means of which it can be brought into and out of engagement with the shifting gate by the stylus. Since the working movement direction of the pawl runs in the opposite direction to the movement direction of the stylus when the sample card is read, the desired reversal of the control direction for the rotary drive of a dobby results.
  • the stylus which moves into a hole in the sample card directs the pawl from the inactive to the active position.
  • the pawl is moved in the direction opposite to the tactile movement of the needle in a force-enhancing sense and the switching arm of a rotary dobby is driven.
  • the needle and pawl are designed so that the former deflects the pawl into the ineffective position on the inevitably caused withdrawal from the hole in the sample card.
  • the eccentric ring 2 is rotatably seated on the main or drive shaft 1 with two diametrically opposed longitudinal grooves 10 and the connecting rod 4 is also rotatable thereon.
  • the eccentric ring 2 has a radially slidably mounted wedge 3.
  • the connecting rod 4 which carries two approximately circular grid rails 7, the ends of which each form an opening 6, the pivot lever 50, which can be pivoted about the pivot point 50, for the shaft of the weaving machine (not shown in the drawing) is articulated via the bolt 40.
  • the switching link 8 which has an oval opening 80, is arranged for the drive shaft 1, which is mounted laterally in the two sliding guides 11, which ensure a linear direction of movement. If the shifting gate 8 is not controlled, it is pulled by the spring 12 attached to the lower slide guide to the left against the needle mechanism 13, which consists of the guide needle 9 mounted in the stationary guide 14 and in the guide 15 executing a reciprocating movement .
  • the pawl 18, which can be pivoted about the axis 19, is installed between the switching link 8 and the needle mechanism 13, the axis carrying out a limited, linear movement K in the sliding direction S of the switching link in the guides 11, in a force-locking manner with the pawl.
  • the side of the pawl 18 facing the head 90 of the needle 9 has a ramp 180 which is pivoted against the needle head 90 by the tension spring 20.
  • a compression spring 21 is arranged between the wedge 3 and the eccentric ring 2 and presses the wedge 3 with its end 30 into one of the grooves 10 of the drive shaft 1, provided that this end does not rest on the periphery of the drive shaft.
  • the force of the spring 12 bringing the shifting gate into the basic position is greater than that of the spring 21 of the wedge 3.
  • the opening 80 of the shift gate 8 is oval, i.e. it consists of two semicircles 83 connected at the ends, via two parallel sections 82, which are parallel to one another and extend approximately in the direction S of the sliding guides for the shifting link, the radii of which are approximately the same or slightly larger than the radius of the drive shaft 1. These sections rest on the periphery of the drive shaft and are used for additional guidance and weight relief against the tilting of the shift gate 8.
  • the mode of operation of the device shown in the drawing is explained on the basis of all the figures.
  • the sample card 17 lying on the cylinder 16 is stepped forward by the cylinder, whereupon the stylus 9 is moved against the sample card by moving the movable guide 15 and is moved away again before it is switched on.
  • the stylus finds a full position, it is pushed back against the force of the spring 23.
  • the pawl 18 lies on the head of the stylus (Fig. 1).
  • the axis 19 moves with the pawl 18, according to arrow K, to the right. Since the pawl tip rests on the head of the stylus, it arrives in the free space 88 of the switching link 8, which remains in the basic position influenced by the spring 12.
  • the wedge 3 is pulled with its end 32 into the opening 6 via the control cam 81 and the groove 31 and is disengaged from the working shaft 1. The shaft is not moved.
  • the stylus 9 finds a hole during its reading movement, it lowers into the sample card 17 (FIG. 46) and its head 90 no longer supports the pawl 18.
  • the pawl tip lowers under the force of the tension spring 20 and now lies with its abutting surface in front of the edge 89 of the shift gate 8.
  • the drive shaft is stationary during the control movement of the shift gate 8 and after the control of the Wedges 3 for engaging the same in one of the grooves 10 or for not engaging, ie holding back outside the groove, rotated step by step through 180 °.
  • the engaged wedge is carried along, while the non-engaged wedge stands still and slides with its broad end 30 on the periphery of the drive shaft 1.
  • the stylus 1 sinks into the switching cylinder 16 and the pawl 18 tilts in front of the edge 89 of the switching link 8.
  • the wedge 3 is carried along by the control cam 81 of the shifting switching link the wedge end 32 is guided into the opening 6, which results in the position according to FIG. 6.
  • the drive shaft 1 now rotates without taking the wedge 3 with it.
  • two pawls and two styli can be arranged with a time-shifted reading and movement time.
  • the intermediate pawl 18 keeps both the control path of the needle and that of the shifting gate short, with the resulting low mass acceleration forces resulting in a substantial increase in the speed of the dobby.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Lock And Its Accessories (AREA)

Claims (11)

1. Procédé pour la commande d'une ratière, dont le mécanisme de formation de la foule se compose d'une bague à excentrique montée à rotation sur un arbre principal, et d'une bielle montée rotative sur ladite bague par rapport au cadre du métier à tisser, une clavette de commande pouvant s'engager dans l'arbre principal ou dans la bielle étant disposée sur la bague à excentrique, caractérisé en ce que la pièce de commande de la clavette de commande est actionnée par un organe d'amplification de force intercalé entre le système de lecture et la pièce de commande, la direction de travail de cet organe étant opposée à la direction du mouvement de l'aiguille de lisage lors de la lecture de la carte à dessins.
2. Procédé selon la revendication 1, caractérisé en ce que l'organe d'amplification de force est un cliquet dont la position, avant le mouvement de travail, est influencée par la position de l'aiguille de lisage.
3. Dispositif pour la commande en fonction d'un dessin, de la clavette d'une ratière rotative comprenant un arbre d'entraînement (1) muni de deux encoches (10) s'étendant axialement et sur lequel est montée, pour chaque cadre, une bague (2) à excentrique dotée d'une clavetter de commande (3) mobile radialement, une bielle (4) étant logée à rotation sur la bague à excentrique et présentant deux orifices d'arrêt (6) opposés l'un à l'autre radialement et associés à la clavette de commande, la bielle agissant, par l'intermédiaire d'un système à levier (5), sur un cadre d'un métier à tisser, ce dispositif présentant un mécanisme (13) de lisage constitué par au moins un organe palpeur (9) assurant la lecture d'une carte (17) à dessins et commandant un levier d'actionnement d'une coulisse d'enclenchement (8) percée d'un évidement (80) fermé périphériquement, une collerette saillante, faisant fonction de came fermée (81) de commande de la clavette, étant disposée le long du bord de l'évidement, caractérisé en ce que la coulisse d'enclenchement (8) est montée dans un guidage coulissant (11) rectiligne orienté radialement par rapport à l'arbre d'entraînement (1).
4. Dispositif selon la revendication 3, caractérisé par le fait que la direction (K) du mouvement de travail par fonctionnement positif du levier d'actionement (18, 19) correspond approximativement à la direction du guidage de la coulisse d'enclenchement (8), et le levier d'actionnement (18) peut être respectivement commandé ou basculé perpendiculairement à sa direction de mouvement (K).
5. Dispositif selon la revendication 4, caractérisé par le fait qu'un intervalle (84) est intercalé entre la surface de butée (188) du levier d'actionnement (18) et l'arête (89) de la coulisse d'enclenchement (8) sur laquelle ladite surface doit venir buter à l'instant du mouvement de commande ou basculement respectivement du levier d'actionnement.
6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que le levier d'actionnement basculable (18) présente une rampe ascendante (180) située dans la zone de mouvement de l'organe palpeur réalisé sous la forme d'une aiguille de lisage (9).
7. Dispositif selon l'une des revendications 3 à 6, caractérisé en ce que la circonférence interne de l'évidement (80) de la coulisse d'enclenchement (8) se compose de deux demi-cercles (83) qui sont reliés par l'intermédiaire de deux régions rectilignes (82) approximativement parallèles l'une à l'autre, ces régions s'étendant approximativement dans la direction (S) du mouvement de la coulisse d'enclenchement (8).
8. Dispositif selon la revendication 7, caractérisé en ce que les régions rectilignes (82) de l'évidement (80) reposent sur la périphérie de l'arbre d'entraînement (1).
9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que la direction d'alignement des régions rectilignes (82) correspond approximativement à la direction du mouvement de l'aiguille de lisage (9).
10. Dispositif selon l'une des revendications 7 à 9, caractérisé en ce que les rayons des demicer- cles (83) sont approximativement identiques ou légèrement supérieurs au rayon de l'arbre d'entraînement (1).
11. Dispositif selon l'une des revendications 4 à 10, caractérisé en ce qu'un ressort (12), agissant dans le sens inverse de la direction (K) du mouvement de travail des leviers d'actionnement (18, 19), est intercalé entre le boîtier de la ratière et la coulisse d'enclenchement (8).
EP83110517A 1982-12-22 1983-10-21 Procédé et dispositif pour la commande d'une ratière du type rotatif Expired EP0113816B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7479/82 1982-12-22
CH7479/82A CH657639A5 (de) 1982-12-22 1982-12-22 Verfahren und vorrichtung zum steuern einer rotations-schaftmaschine.

Publications (3)

Publication Number Publication Date
EP0113816A2 EP0113816A2 (fr) 1984-07-25
EP0113816A3 EP0113816A3 (en) 1986-07-02
EP0113816B1 true EP0113816B1 (fr) 1989-06-07

Family

ID=4325768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110517A Expired EP0113816B1 (fr) 1982-12-22 1983-10-21 Procédé et dispositif pour la commande d'une ratière du type rotatif

Country Status (6)

Country Link
US (1) US4552184A (fr)
EP (1) EP0113816B1 (fr)
JP (1) JPS59130340A (fr)
BR (1) BR8306982A (fr)
CH (1) CH657639A5 (fr)
DE (1) DE3380034D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH661063A5 (de) * 1983-06-16 1987-06-30 Staeubli Ag Verfahren zum betrieb einer schaftmaschine und schaftmaschine zur ausfuehrung des verfahrens.
EP0291655A1 (fr) * 1987-05-19 1988-11-23 GebràœDer Sulzer Aktiengesellschaft Accouplement pour machines textiles
IT1246701B (it) * 1990-07-11 1994-11-26 Nuovopignone Ind Meccaniche Ef Dispositivo di comando perfezionato per ratiere rotative ad altissima velocita'
CN112442784B (zh) * 2020-02-27 2022-05-13 南通中邦双佳纺织科技有限公司 一种基于驻波原理的纺织装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH396791A (de) * 1961-03-07 1965-07-31 Staeubli Geb & Co Fachbildungs-Vorrichtung für Webstühle
CH522057A (de) * 1970-05-29 1972-04-30 Staeubli Ag Einrichtung an einer Schaftmaschine mit Antriebswelle und darauf gelagertem Exzenterring, zum Blockieren im Stillstand oder Sichern eines Keiles beim Kuppeln des Exzenterringes mit der Antriebswelle oder der Kurbelstange
CH512605A (de) * 1970-05-29 1971-09-15 Staeubli Ag Vorrichtung zum Steuern einer Keilkupplung insbesondere in einer Schaftmaschine, und Verfahren zum Betrieb derselben
CH517192A (de) * 1970-05-29 1971-12-31 Staeubli Ag Einrichtung zur Kupplung einer Antriebswelle mit einer Kurbelstange
JPS5017605B2 (fr) * 1971-09-30 1975-06-23
CH582766A5 (fr) * 1974-07-01 1976-12-15 Staeubli Ag
CH620477A5 (fr) * 1976-01-30 1980-11-28 Staeubli Ag
CS185955B1 (en) * 1976-05-24 1978-10-31 Frantisek Hadinec Pulse-controlled double-lift dobby
DE2841279C2 (de) * 1978-09-22 1986-04-17 W. Schlafhorst & Co, 4050 Mönchengladbach Rotationsschaftmaschine
CH639707A5 (de) * 1979-08-16 1983-11-30 Staeubli Ag Rotationsschaftmaschine.
DE2938451B1 (de) * 1979-09-22 1980-09-11 Zangs Ag Maschf Rotations-Schaftmaschine
DE3001310C2 (de) * 1980-01-16 1982-02-04 Maschinenfabrik Carl Zangs Ag, 4150 Krefeld Rotations-Schaftmaschine
CH643606A5 (de) * 1980-02-22 1984-06-15 Staeubli Ag Ablese- und steuervorrichtung einer steuermaschine, insbesondere fachbildemaschine.
CH643379A5 (de) * 1980-02-26 1984-05-30 Staeubli Ag Ablese- und hubvorrichtung einer steuermaschine.

Also Published As

Publication number Publication date
CH657639A5 (de) 1986-09-15
DE3380034D1 (en) 1989-07-13
US4552184A (en) 1985-11-12
BR8306982A (pt) 1984-07-31
EP0113816A3 (en) 1986-07-02
EP0113816A2 (fr) 1984-07-25
JPS59130340A (ja) 1984-07-26

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