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EP0686715A1 - Métier à tisser avec accouplement pour cadres - Google Patents

Métier à tisser avec accouplement pour cadres Download PDF

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Publication number
EP0686715A1
EP0686715A1 EP94810333A EP94810333A EP0686715A1 EP 0686715 A1 EP0686715 A1 EP 0686715A1 EP 94810333 A EP94810333 A EP 94810333A EP 94810333 A EP94810333 A EP 94810333A EP 0686715 A1 EP0686715 A1 EP 0686715A1
Authority
EP
European Patent Office
Prior art keywords
coupling
shaft
sections
loom
parts
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Withdrawn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
EP94810333A
Other languages
German (de)
English (en)
Inventor
Gustav Oertli
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.)
Itema Switzerland Ltd
Maschinenfabrik Rueti AG
Original Assignee
Sultex AG
Maschinenfabrik Rueti 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 Sultex AG, Maschinenfabrik Rueti AG filed Critical Sultex AG
Priority to EP94810333A priority Critical patent/EP0686715A1/fr
Publication of EP0686715A1 publication Critical patent/EP0686715A1/fr
Withdrawn legal-status Critical Current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
    • D03C9/00—Healds; Heald frames
    • D03C9/06—Heald frames
    • D03C9/0683—Arrangements or means for the linking to the drive system
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames

Definitions

  • the invention relates to a shaft coupling according to the preamble of claim 1 and a weaving machine with such a shaft coupling.
  • a shaft coupling of this type is known from EP-A-0 407 334 (T.794) in order to connect a heald frame to a shaft drive in a straight-line coupling movement.
  • the shaft coupling has a coupling part on the shaft side and a coupling part on the shaft drive with interlocking coupling sections, which have a surface running transversely to the movement for power transmission and two side surfaces running in the direction of movement for guidance and torque transmission, as well as a coupling element with coupling wedges which is pivotably arranged on the coupling part on the shaft drive side and which has shoulders in or can be disengaged in order to lock or unlock the coupling parts.
  • the shaft-side coupling part is mounted in a carrier which is attached to the heald frame.
  • the carrier has a pair of tabs which carry a bolt on which the shaft-side coupling part is located.
  • the reference numeral 13 denotes an elastic member, by means of which the coupling part on the shaft side is connected to the bolt stands.
  • the purpose of the elastic member is to compensate for existing deviations in the alignment of the coupling sections or in the direction of the coupling movement.
  • Another proposed solution provides for a flexible elastic bumper.
  • a shaft coupling 1 represents a connecting link between a heald frame 2 and a shaft drive 3, which contains a push rod 4, a coupling member 5, an angle lever 6 and a drive rod 7, the drive rod being provided with a drive device (not shown) Loom is connected.
  • the heald frames are known to be changed when the shed is closed. To achieve this, all heald frames are brought to the same, approximately medium level. In this position, due to the design of the shaft drive 3, an offset occurs, as a result of which the push rod 4 is bent elastically and the coupling parts are subjected to a moment M. As a result of this moment, the coupling sections are pressed against one another with a pair of forces (FIG. 2a). This pair of forces increases at constant torque M with progressive movement of the shaft-side coupling part to F2 (Fig. 2b), whereby the force for lifting the heald frames due to friction shortly before decoupling takes on the greatest value. The same situation arises if there is a deviation in the direction of the clutch movement instead of the deviation mentioned above. This is particularly the case if the heald frames are lifted out at an angle to the direction of attachment of the coupling parts because of a misalignment of the loom changing device, or if the left and right sides of the shaft are out of sync.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims solves the problem of improving a shaft coupling for a weaving machine, so that in addition to maintaining the good coupling properties, i.e. of power transmission and guidance, the coupling parts can be released or coupled with minimal effort with minimal oblique relative movement, or existing torque M.
  • the bumper 4 consists of flexible material, the coupling parts are acted upon with a moment M and, as a result, the coupling sections are pressed against one another with a force F 3. If the heald frame 2 is lifted out of the weaving machine, the moment M acting on the coupling parts is reduced when the lifting movement is started by permitting a rotation of the parts on the shaft drive side, a small stroke length already being sufficient. Since the coupling parts are released after a short stroke length, the effort required to lift the heald frame is lower, i.e. essentially the weight of the heald frame has to be considered. Even if the heald frame is lifted at an angle, the torque is reduced with a very short stroke length according to FIGS. 3a and 3b.
  • FIGS. 3a and 3b show a preferred embodiment of a shaft coupling according to the invention in the coupled and partially uncoupled state.
  • FIGS 3a and 3b show the shaft coupling in the unlocked state.
  • the shaft coupling contains a first coupling part 11, a second coupling part 12 and a coupling element 13 which is pivotably arranged on the second coupling part and locks the first and second coupling parts in the coupled state.
  • the first coupling part 11 is mounted torsionally rigid by means of screws 12.
  • the second coupling part 12 is attached to the bumper 4.
  • the coupling parts 11 and 12 have interlocking coupling sections 14, 15, the coupling section 15 of the first coupling part 11 being designed as a cutout and the coupling section 14 of the second coupling part 12 being designed as a shoulder.
  • the coupling sections 14, 15 are trapezoidal with a surface 16 running transversely to the mounting direction I for power transmission and two surfaces 17 for guidance.
  • the shaft coupling 1 contains a first and a second coupling part 11, 12 and a coupling element 13 which connects the coupling parts in the coupled state.
  • the coupling parts have interlocking sections 14, 15 which have trapezoidal guide surfaces 17 which diverge in the mounting direction. If the coupling parts are subjected to a moment in the coupled state, this is reduced with the onset of the movement for decoupling the coupling sections 14, 15. This means that, in particular when lifting heald frames, e.g. less effort is required when changing articles.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP94810333A 1994-06-06 1994-06-06 Métier à tisser avec accouplement pour cadres Withdrawn EP0686715A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94810333A EP0686715A1 (fr) 1994-06-06 1994-06-06 Métier à tisser avec accouplement pour cadres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94810333A EP0686715A1 (fr) 1994-06-06 1994-06-06 Métier à tisser avec accouplement pour cadres

Publications (1)

Publication Number Publication Date
EP0686715A1 true EP0686715A1 (fr) 1995-12-13

Family

ID=8218267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810333A Withdrawn EP0686715A1 (fr) 1994-06-06 1994-06-06 Métier à tisser avec accouplement pour cadres

Country Status (1)

Country Link
EP (1) EP0686715A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH488830A (de) * 1968-03-28 1970-04-15 Sulzer Ag Vorrichtung zum Kuppeln eines Webschafts mit hin- und hergehenden Antriebsplatinen
DE2022063A1 (de) * 1969-06-13 1971-02-11 Staeubli Geb & Co Anhaengevorrichtung fuer einen Webmaschinenschaft
FR2408672A1 (fr) * 1977-11-10 1979-06-08 Alsacienne Constr Meca Perfectionnement aux tirants de liaison de cadres de harnais aux basculeurs de metiers a tisser
DE3006363A1 (de) * 1980-02-20 1981-08-27 Fa. C.C. Egelhaaf, 7410 Reutlingen Einrichtung zur loesbaren verbindung der schaefte einer webmaschine mit ihrem antriebsmechanismus
EP0242668A1 (fr) * 1986-04-11 1987-10-28 GebràœDer Sulzer Aktiengesellschaft Dispositif pour accoupler le mouvement des lames respectivement la ratière d'un métier à tisser à une lame
EP0407334A1 (fr) * 1989-07-07 1991-01-09 Sulzer RàœTi Ag Métier à tisser avec élément de couplage pivotant pour cadres

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH488830A (de) * 1968-03-28 1970-04-15 Sulzer Ag Vorrichtung zum Kuppeln eines Webschafts mit hin- und hergehenden Antriebsplatinen
DE2022063A1 (de) * 1969-06-13 1971-02-11 Staeubli Geb & Co Anhaengevorrichtung fuer einen Webmaschinenschaft
FR2408672A1 (fr) * 1977-11-10 1979-06-08 Alsacienne Constr Meca Perfectionnement aux tirants de liaison de cadres de harnais aux basculeurs de metiers a tisser
DE3006363A1 (de) * 1980-02-20 1981-08-27 Fa. C.C. Egelhaaf, 7410 Reutlingen Einrichtung zur loesbaren verbindung der schaefte einer webmaschine mit ihrem antriebsmechanismus
EP0242668A1 (fr) * 1986-04-11 1987-10-28 GebràœDer Sulzer Aktiengesellschaft Dispositif pour accoupler le mouvement des lames respectivement la ratière d'un métier à tisser à une lame
EP0407334A1 (fr) * 1989-07-07 1991-01-09 Sulzer RàœTi Ag Métier à tisser avec élément de couplage pivotant pour cadres

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