EP0805225A2 - Liaison d'entraînement entre un métier à tisser et son dispositif de formation de la foule - Google Patents

Liaison d'entraînement entre un métier à tisser et son dispositif de formation de la foule Download PDF

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Publication number
EP0805225A2
EP0805225A2 EP97104412A EP97104412A EP0805225A2 EP 0805225 A2 EP0805225 A2 EP 0805225A2 EP 97104412 A EP97104412 A EP 97104412A EP 97104412 A EP97104412 A EP 97104412A EP 0805225 A2 EP0805225 A2 EP 0805225A2
Authority
EP
European Patent Office
Prior art keywords
drive
connection according
weaving machine
drive connection
dobby
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.)
Withdrawn
Application number
EP97104412A
Other languages
German (de)
English (en)
Other versions
EP0805225A3 (fr
Inventor
Fred Dipl.-Ing. Dr. Steinhauser
Fritz Vöhringer
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.)
F Oberdorfer Siebtechnik GmbH
Original Assignee
F Oberdorfer Siebtechnik GmbH
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 F Oberdorfer Siebtechnik GmbH filed Critical F Oberdorfer Siebtechnik GmbH
Publication of EP0805225A2 publication Critical patent/EP0805225A2/fr
Publication of EP0805225A3 publication Critical patent/EP0805225A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/02—General arrangements of driving mechanism
    • 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
    • D03C1/146—Independent drive motor

Definitions

  • the invention relates to a drive connection between a weaving machine and its shedding device according to the preamble of claim 1.
  • Each weaving machine has a shedding device which, by operating the shafts, ensures that the correct warp threads are raised or lowered in order to be able to insert a weft thread in the compartment formed by the raising or lowering.
  • the sequence of the subjects determines the weave of the fabric.
  • the sequence of movements of the shedding device must be precisely matched to that of the weaving machine, since if the shed is not produced in time or is not spread far enough, the warp threads can be damaged by the weft insertion system, characterized by a shuttle, contactor or projectile.
  • the shed formation device can be a mechanical dobby or consist of individual drive devices for the separate actuation of the individual shafts, that is to say it can be an individual shaft control.
  • the mechanical dobby can be mechanically coupled directly to the drive of the weaving machine or driven by its own motor. In the former case, the synchronization of the movements is inevitable, in the latter case the synchronization between the shedding device or the dobby and the weaving machine must be ensured by a corresponding electronic control.
  • DE-GM G 87 10 997.2 proposes an electronically controlled motor, for example a stepper motor or AC / DC motor with appropriate control electronics or programming.
  • the engine is connected to an engine control and this is in turn connected via a connecting line to a contact pulse generator, which receives its pulses from a pulse generator of the weaving machine.
  • a contact pulse generator which receives its pulses from a pulse generator of the weaving machine.
  • DE 41 11 405 has already disclosed a drive for the loading movement of a weaving machine by means of toggle levers articulated on the one hand on the sley and on the other hand on the stand, which can be moved by a cam disk forming an eccentric drive.
  • the shaft driving the cam disc is driven by a drive which is adjustable in its speed so that the shaft has a higher rotational speed when the sley is moved from its position on the fabric edge to the rear position and from the rear position to the fabric edge than when the The sley essentially stands still due to the curve drive.
  • This mechanical coupling leads to a high working speed even with large weaving machines, without having to do without a sufficient downtime of the weaving sley.
  • the object of the present invention is therefore to develop a device which is as simple, quick to operate and reliable as possible to support the adjustment work in influencing the course of the change of subject process as a whole.
  • This construction enables a completely independent drive of the specialist training facility, e.g. a dobby machine, which leads to cost savings, and yet with a mechanically coupled connection between the weaving machine and the dobby machine, it offers a relatively simple adjustment option for the shed changing process.
  • the specialist training facility e.g. a dobby machine
  • the proposed superposition gear can be a special design of a planetary gear.
  • a temporarily actuatable drive for adjusting the twist between the weaving machine and the dobby can be provided on the superimposition drive for the purpose of optionally changing the subject change time.
  • the overlay drive can be switched off during normal operation of the weaving machine and optionally also have a self-locking effect.
  • FIG. 1 of the drawing schematically shows an embodiment of the drive connection.
  • the dobby 5 as a shedding device is mechanically coupled to the weaving machine 6 by the superposition gear 4, which is designed as a planetary gear, the superposition gear thus being located between the output of the loom and the drive of the dobby.
  • ⁇ denotes the angular velocities or speeds and the indices stand for 1: input from the weaving machine 6, 2: superimposition input and 3: output to the dobby 5.
  • k 1 and k 2 weight the input speeds.
  • k 2 ⁇ 1 is a reasonable assumption.
  • a simple drive for example a handwheel, can be used to set the necessary rotation for adjusting the time of the compartment change via the overlay drive.
  • the superimposition drive is not actuated during normal operation.
  • Gearboxes which meet the above-mentioned condition k 2 ⁇ 1 are often self-locking with respect to the superimposition drive. In this case, it is not even necessary to brake the input.
  • the overlay drive can also be used during the operation of the weaving machine 6 to influence the change of subject. It is conceivable that the time of the change of subject is also varied depending on the subject in order to achieve optimal stacking. To do this, an appropriate angular offset ⁇ 3 must be carried out in good time before the change of subject begins. After changing the subject, this twisting must either be reversed again or counted against the angular offset for the following subject, so that it does not build up cumulatively.
  • the integration time T corresponds to the duration of a working stroke or successive working strokes with the same changing conditions of the weaving machine 6. In principle, this gives you all the degrees of freedom as with the completely independent drive of the shedding device, in this case the dobby 5, but still wins following additional benefits.
  • the main part of the drive power for the dobby is supplied by the loom via the input from the loom, the controlled drive at the superimposed input only has to contribute a fraction of the drive power, depending on the design.
  • the maximum input angle ⁇ 2 and thus also the maximum rotation ⁇ 3 between weaving machine 6 and dobby 5 can be safely limited with relatively simple means. It is thus easier to ensure that the combination of loom and dobby works within the limits in which damage to the fabric and machine parts is excluded.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP97104412A 1996-04-29 1997-03-14 Liaison d'entraínement entre un métier à tisser et son dispositif de formation de la foule Withdrawn EP0805225A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19617180 1996-04-29
DE19617180A DE19617180A1 (de) 1996-04-29 1996-04-29 Antriebsverbindung zwischen einer Webmaschine und ihrer Fachbildungseinrichtung

Publications (2)

Publication Number Publication Date
EP0805225A2 true EP0805225A2 (fr) 1997-11-05
EP0805225A3 EP0805225A3 (fr) 1998-03-25

Family

ID=7792826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97104412A Withdrawn EP0805225A3 (fr) 1996-04-29 1997-03-14 Liaison d'entraínement entre un métier à tisser et son dispositif de formation de la foule

Country Status (2)

Country Link
EP (1) EP0805225A3 (fr)
DE (1) DE19617180A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19960928C2 (de) * 1999-12-17 2002-04-25 Dornier Gmbh Lindauer Vorrichtung zum Herstellen einer Antriebsverbindung zwischen einer Schaftmaschine und artverschiedenen Fachbildemaschinen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT287607B (de) * 1968-05-29 1971-01-25 Zangs Ag Maschf Schußfadensuchvorrichtung
EP0083676B1 (fr) * 1981-12-16 1985-08-21 GebràœDer Sulzer Aktiengesellschaft Dispositif permettant de corriger des fausses duites
WO1989001540A1 (fr) * 1987-08-12 1989-02-23 Fred Borisch Metier mecanique a ratiere d'armures mecanique

Also Published As

Publication number Publication date
DE19617180A1 (de) 1997-10-30
EP0805225A3 (fr) 1998-03-25

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