EP0616062A1 - Réparation de fil de trame cassé sur métiers à tisser à projectiles - Google Patents

Réparation de fil de trame cassé sur métiers à tisser à projectiles Download PDF

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Publication number
EP0616062A1
EP0616062A1 EP93810191A EP93810191A EP0616062A1 EP 0616062 A1 EP0616062 A1 EP 0616062A1 EP 93810191 A EP93810191 A EP 93810191A EP 93810191 A EP93810191 A EP 93810191A EP 0616062 A1 EP0616062 A1 EP 0616062A1
Authority
EP
European Patent Office
Prior art keywords
weft
weaving machine
loom
main shaft
coupling part
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Withdrawn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
EP93810191A
Other languages
German (de)
English (en)
Inventor
Mauritius Bollier
Ernst Bigler
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 EP93810191A priority Critical patent/EP0616062A1/fr
Publication of EP0616062A1 publication Critical patent/EP0616062A1/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Withdrawn legal-status Critical Current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
    • D03D51/06—Driving, starting, or stopping arrangements; Automatic stop motions using particular methods of stopping
    • D03D51/08—Driving, starting, or stopping arrangements; Automatic stop motions using particular methods of stopping stopping at definite point in weaving cycle, or moving to such point after stopping
    • D03D51/085—Extraction of defective weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/24—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick by gripper or dummy shuttle

Definitions

  • the present invention relates to a method for automatically eliminating weft breaks according to the preamble of claim 1 and a projectile weaving machine for carrying out the method.
  • the weaving machine comes to a standstill with a delay. This delay can lead to subsequent functions of the weaving machine being initiated which cannot be undone without the modules performing the functions being damaged. For this reason, the projectile weaving machine is equipped with an anti-reverse mechanism.
  • the invention will remedy this.
  • the invention as characterized in the claims, solves the problem of creating a method and a device for the automatic correction of shot errors, in which only a shot search process is required to eliminate a substantial proportion of the types of shot errors that usually occur.
  • the working cycle of a weaving machine and thus that of the weft mechanism, the catching mechanism and the projectile return transport are known to be defined by the angular position of the main shaft.
  • weft errors can occur during a weaving cycle, which can occur between the thread store and the pocket entrance and during the thread weft process.
  • the method in question is intended in particular to correct weft breakage that occurs towards the end of the weft process. If such a weft break occurs, due to the delay occurring until the main shaft comes to a standstill, at least one of the functions initiated with the weft insertion process, e.g. a projectile has already been ejected from the trap. In order to remedy the weft break, the loom is turned in the opposite direction, namely to an angle of rotation position, which enables the weft break to be remedied automatically.
  • the position is selected in which the threading of a new weft thread can be carried out.
  • the threading channels and the corresponding thread tensioner are always in a defined position.
  • the actual process of eliminating the weft breakage can be carried out using the method and the device as described in EP-A-458 736 (T.825).
  • an anti-reverse mechanism is deactivated after the machine has come to a standstill, which is described below.
  • the drive system of a projectile weaving machine essentially contains a drive device, a main shaft, a secondary shaft, a transverse shaft and a control shaft. At the weft end of the weaving machine, an anti-reverse mechanism is mounted at the end of the main shaft.
  • a receiving part 3 On the End portion of the main shaft 1 is fixed by means of a nut 2, a receiving part 3 which rotates with the main shaft.
  • the receiving part 3 is sleeve-shaped and has a flange 4.
  • a liner 5 On the receiving part 3, a liner 5 is arranged, which is rotatably mounted on the circumference in a main shaft flange 6.
  • the main shaft flange 6 is fastened to the machine frame 8 by means of screws 7.
  • an annular part 9 is fastened in a recess by means of screws 10.
  • the winding 11 of an electromagnet is arranged.
  • a ring gear 12 with external teeth is arranged by means of screws 13.
  • An armature part 15 is arranged between the ring-shaped part 9 and the ring gear 12 and is in operative connection with the winding 11.
  • the anchor part 15 is guided and held on the screws 13.
  • a first annular coupling part 16 is fastened to the circumference of the annular part 9, which is hereinafter referred to as the stationary coupling part, and a second annular coupling part 17 is fastened to the circumference of the anchor part 15, which is hereinafter referred to as the movable coupling part .
  • the stationary and movable coupling part 16, 17 have sawtooth teeth on one end face and are arranged relative to one another in such a way that the teeth can be brought into and out of engagement.
  • the movable coupling part 17 has an internal toothing 18 which is in engagement with the external toothing of the ring gear 12.
  • the arrangement is housed in a housing 19 which is fastened to the main shaft flange 3 by means of screws 20. It is pointed out that the anti-reverse mechanism can be mounted at the end of the cross shaft.
  • the electromagnet When the loom is switched on, the electromagnet is excited and the armature part 15 against the ring-shaped part 9 drawn. As a result, the stationary and the movable coupling part 16, 17 are brought into engagement. While the machine is starting up, the electromagnet is de-energized and the movable coupling part 17 is lifted off the stationary coupling part 16. If the weaving machine is switched off, the electromagnet is excited and the stationary and the movable coupling part 16, 17 are brought into engagement. If the weaving machine is switched off due to a weft break, the electromagnet is de-energized and the coupling parts 16, 17 disengaged after the weaving machine has come to a standstill. The weaving machine can thus be rotated in the opposite direction and returned to the rotational angle position defined for eliminating the weft break.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP93810191A 1993-03-17 1993-03-17 Réparation de fil de trame cassé sur métiers à tisser à projectiles Withdrawn EP0616062A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93810191A EP0616062A1 (fr) 1993-03-17 1993-03-17 Réparation de fil de trame cassé sur métiers à tisser à projectiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93810191A EP0616062A1 (fr) 1993-03-17 1993-03-17 Réparation de fil de trame cassé sur métiers à tisser à projectiles

Publications (1)

Publication Number Publication Date
EP0616062A1 true EP0616062A1 (fr) 1994-09-21

Family

ID=8214932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93810191A Withdrawn EP0616062A1 (fr) 1993-03-17 1993-03-17 Réparation de fil de trame cassé sur métiers à tisser à projectiles

Country Status (1)

Country Link
EP (1) EP0616062A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7107996A (fr) * 1971-06-10 1972-12-12
EP0102515A2 (fr) * 1982-08-05 1984-03-14 Neue Baumwoll-Spinnerei und Weberei Hof AG Machine à tisser à fausse navette avec un dispositif de recherche de la duite
EP0161012A1 (fr) * 1984-04-06 1985-11-13 Picanol N.V. Mécanisme de recherche de la trame pour métiers à tisser
EP0354300A2 (fr) * 1988-08-06 1990-02-14 Nissan Texsys Co., Ltd. Système et méthode pour le traitement de la trame dans un métier à jet de fluide
EP0458736A1 (fr) * 1990-05-21 1991-11-27 Gebrüder Sulzer Aktiengesellschaft Extraction de fil de trame cassé sur métiers à tisser à projectiles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7107996A (fr) * 1971-06-10 1972-12-12
EP0102515A2 (fr) * 1982-08-05 1984-03-14 Neue Baumwoll-Spinnerei und Weberei Hof AG Machine à tisser à fausse navette avec un dispositif de recherche de la duite
EP0161012A1 (fr) * 1984-04-06 1985-11-13 Picanol N.V. Mécanisme de recherche de la trame pour métiers à tisser
EP0354300A2 (fr) * 1988-08-06 1990-02-14 Nissan Texsys Co., Ltd. Système et méthode pour le traitement de la trame dans un métier à jet de fluide
EP0458736A1 (fr) * 1990-05-21 1991-11-27 Gebrüder Sulzer Aktiengesellschaft Extraction de fil de trame cassé sur métiers à tisser à projectiles

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