EP0448914A1 - Dispositif pour métiers à tisser composé d'un réservoir de trame, d'une rÀ©serve de fil et d'un organe de transfert de fil - Google Patents

Dispositif pour métiers à tisser composé d'un réservoir de trame, d'une rÀ©serve de fil et d'un organe de transfert de fil Download PDF

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Publication number
EP0448914A1
EP0448914A1 EP90810999A EP90810999A EP0448914A1 EP 0448914 A1 EP0448914 A1 EP 0448914A1 EP 90810999 A EP90810999 A EP 90810999A EP 90810999 A EP90810999 A EP 90810999A EP 0448914 A1 EP0448914 A1 EP 0448914A1
Authority
EP
European Patent Office
Prior art keywords
thread
head piece
input
weft
yarn
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Withdrawn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
EP90810999A
Other languages
German (de)
English (en)
Inventor
Josef Kaufmann
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
Original Assignee
Sulzer AG
Sultex AG
Gebrueder Sulzer 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 Sulzer AG, Sultex AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0448914A1 publication Critical patent/EP0448914A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • 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

Definitions

  • the invention relates to a device according to the preamble of claim 1 and a weaving machine, in particular a projectile or rapier weaving machine, with such a device.
  • a device is known from JP, A, 1-92452 (as can be seen from the figures) in which the free thread end of a supply spool is fetched by mechanical means and fed to the weft thread store. With a pivotable arm, the thread end is brought from the bobbin to additional auxiliary devices, with which the thread is then introduced into the storage. These auxiliary devices and especially the pivoting arm require a fairly large freedom of movement.
  • the invention solves this problem on the one hand by an input device of the memory, as given by the characterizing features of claim 1, and on the other hand by a thread transmission element, as characterized in claim 8.
  • Advantageous embodiments of the invention are characterized in more detail by claims 2 to 7 and 9 to 12.
  • Claims 13 and 14 characterize an additional auxiliary device with which the thread transfer from the bobbin to the head piece of the thread transmission member can be carried out.
  • Claim 15 finally claims the protection of projectile or rapier weaving machines which have the device according to the invention.
  • the memory 10 is essentially a known device, as described, for example, in DE-OS 3123760, in which, however, an additional input device 11 is attached, which fulfills special functions characterized by the invention in eliminating a weft break.
  • the weft thread 2a is drawn off the bobbin 2.
  • the thread end 3a held ready is passed from the reserve spool 3 to the store entrance by means of the thread transfer device 30, the telescopic arm 31 extending and Memory 10 rotates until head part 32 contacts the memory input.
  • a sensor 19 at the storage input for example, monitors the correct application of the thread transfer device 30.
  • Another sensor, not shown, at the storage input serves as a thread monitor.
  • the passage of air through the storage inlet can be suppressed with a closing element 12.
  • a cutting element 15 serves to cut off a broken weft thread which is blown out laterally from the input device 11.
  • These two auxiliary elements 12 and 15 can be actuated, for example, by means of double-acting pneumatic cylinders.
  • 2 shows inner details of the input device 11.
  • the plug 12a can be pushed back and forth by the closing member 12.
  • the plug 12a touches a diametrically opposite plug 13, which is detachably fastened in the side wall of the input device 11.
  • Two injector nozzles 14 and 16 with the compressed air connections 14a and 16a can be operated for thread transport.
  • Such a nozzle advantageously consists of an annular nozzle for the driving jet and a central passage opening for the thread.
  • the injector nozzle 14 acts in the direction of the cutting element, which is symbolically indicated by the scissors 15 '.
  • the injector nozzle 16 acts in the direction of the accumulator, which is indicated by the cylinder 10 'shown in dashed lines.
  • the two plugs 12a and 13 are cylindrical in shape, have the same diameter and lie flush with one another. Their diameter corresponds to the diameter of the inlet channel 18 in FIG. 2, but can also be larger. While closing the plug 12a is only slightly pressed against the plug 13, so that a thread in the input channel 18 is only clamped but not damaged.
  • An abrasion-resistant plastic such as Vulkolan is advantageously chosen as the material for the two plugs 12a and 13.
  • the injector nozzle 14 is then put into operation and the winding mechanism of the accumulator 10 is rotated in the reverse direction in such a way that the thread in the accumulator 10 is released and removed via the blow-out channel 20.
  • a knot forms at the outlet, since further transport is prevented because of the thread 2a clamped in the closing element 12.
  • the closing member 12 By intermittently opening the closing member 12, the knotted thread can be conveyed intermittently, an additional piece of thread 2a being drawn off the bobbin 2.
  • the cutting element 15 takes action, as a result of which the thread held by the closing element 12 is given a well-defined length. Then, instead of the injector nozzle 14, the other injector nozzle 16 takes up the activity and sucks the thread end out of the Blow-out duct 20 into the feed duct 18, via which the thread is fed back to the winding mechanism of the store 10. By opening the closing member 12, the threading process can now begin, by means of which the loading of the thread storage device 10 and the threading up to the shed again take place automatically.
  • a threading process is known, for example, from JP, A, 1-92452, already cited.
  • the process of repairing the weft breakage proceeds somewhat differently.
  • the thread must have entered the memory 10 up to the breaking point, which is registered by a thread monitor at the memory input. Only then does the memory input close, whereby the function of the closing element 12 as a thread clamp is now omitted.
  • the subsequent removal of the thread from the memory 10 takes place in the same way as in the first case described above.
  • the thread must first be separated from the weft thread lying in the shed between the store 10 and the weaving machine, for example by means of the scissors in front of the shed.
  • the head part 32 attached to the telescopic arm 31 in FIG. 3a has a thread clamp 34 and a head tip 36.
  • the thread clamp 34 consists of several parts: a sleeve 34a with an opening 34b; a piece of pipe 34c which slides tightly within the sleeve 34a, which is prevented from exiting the sleeve 34a by an abutment member, not shown, and which has an opening 34d; a compression spring 34e which acts between the pipe section 34c and the sleeve 34a.
  • the two openings 34b and 34d are arranged adjacent to one another in such a way that in the clamped state they touch or slightly overlap at the edge and can thus hold a thread passing through the two openings.
  • the thread clamp 34 opens as a result of a force acting on the head piece 32 in the direction of the telescopic arm 31.
  • the head tip 36 consists of a part 36a which is fixedly connected to the head piece 32 and which is a hollow ball provided with two openings, and a coupling piece 36b which on the one hand is movably supported on the part 36a and on the other hand fits onto the mouth 21 of the memory input.
  • Figure 3b where the head tip 36 is shown partially cut away.
  • the thread 3a is clamped between the surface of the mouth 21 and the coupling piece 36b when the headpiece 32 is applied to the storage entrance. If the head piece 32 is pressed against the mouth 21, the thread clamp 34 is released. In this state, the thread end lying in the head piece 32 can be sucked into or blown into the accumulator 10. The The thread 3a is then transported further by means of the injector nozzle 16.
  • FIG. 3a shows a further developed form of the thread clamp 34.
  • a nozzle 33a with a flexible tube 33 (see also FIG. 1) is located above the opening 34b (FIG. 3a).
  • the provided thread end 3a of the reserve spool 3 can be drawn in via the tube 33 for reception by the thread transfer element 30.
  • the thread end 3a can also be blown out again, for example, via this tube 33.
  • the thread end 3a can be provided manually or by an automatic auxiliary device, as is described below by way of example in connection with the explanation of FIG.
  • an automatic auxiliary device with which, for example, the thread 3a is placed in front of the headpiece 32, the thread clamp 34 is opened and finally the thread 3a is drawn into the headpiece 32.
  • a head piece 32 according to FIG. 3a is used.
  • FIG. 4 A device according to the invention is shown in FIG. 4, in which the bobbins 2, 3 and the thread transfer element 30 are mounted on a common carrier 40 which is attached to a frame 45 by means of a swivel drive 41 is pivotable.
  • the carrier 40 is a housing in which drive means for the bobbins 2, 3 and for the thread transfer element 30 are located.
  • An auxiliary device 50 which is only partially shown, is used to transfer the thread end 3a from the reserve spool 3 to the head piece 32 of the thread transfer member 30.
  • the auxiliary device 50 can be moved between at least two positions. In a first position, which is represented by the dashed-line auxiliary device 50 ', the thread end 3a on the rotating bobbin 3 is sought by a funnel-like suction nozzle 51, sucked in and held by a clamping member 52, which is only indicated in FIG. In a second position, the thread transfer element 30 takes over the thread end 3a held ready from the suction nozzle 51, the head piece 32 taking action in the same way as at the storage input. When the thread clamps are open, the auxiliary device 50 blows the thread end 3a into the head piece 32. The blowing as well as the suction is carried out by the part of the auxiliary device 50, not shown, according to the arrows S and B in FIG.
  • the auxiliary device 50 advantageously has a cutting element 53 which shortens the thread 3a to a well-defined length. The suction of the thread 3a is monitored by a sensor 54.
  • the thread transfer member 30 changes into the position 30 ′ shown in dashed lines in which the thread transfer takes place at the entrance mouth 21 of the memory 10 by changes in the length of the telescopic arm 31 and by a pivoting movement.
  • the carrier 40 is also rotated by 180 degrees by means of the swivel drive 41, so that the positions of the two bobbins 2 and 3 with respect to the frame 45 are interchanged.
  • the thread 3a thus comes to lie in the place of the thread 2a.
  • the arrows A, C, C 'and D indicate various rotary and pivoting movements in FIG. 4, it being possible for the indicated direction of rotation to be reversed.
  • the pivoting movements of the thread transfer element 30 (arrow A) and the carrier 40 (arrows C, C ') take place about an axis of rotation which runs parallel to the x-axis of the Cartesian reference system which is also shown in FIG.
  • the rotation of the coil 3 (arrow D) takes place about an axis of rotation parallel to the y-axis.
  • the device described with reference to FIG. 4 is only to be understood as a special exemplary embodiment.
  • more than two coils can be arranged on a pivotable carrier, the angle by which the pivot drive rotates the carrier being correspondingly smaller.
  • the bobbins can be oriented differently, for example in such a way that the bobbin 2 in FIG.
  • the coil position, as shown in FIG. 4, can be advantageous in the case of automatic coil loading.
  • two or there are more such devices with pivotable support 40; a single auxiliary device 50 can carry out the thread preparation for several or all thread transfer elements 30.
  • 5 a shows a device as a further exemplary embodiment, in which the thread transfer element consists of an injector nozzle 300, the mixing tube 302 of which is designed as a holder of the bobbin 2.
  • 5b shows a longitudinal section through the nozzle 300 (bobbin 2 ', thread 2a' and holder 4 'are indicated by broken lines). The blowing direction 310 of the nozzle 300 is aligned with the mouth 21 of the reservoir 10. Each coil is placed on such an injector nozzle 300.
  • the thread end of a reserve spool is inserted into the nozzle 300.
  • the thread end is driven to the mouth 21, where it is entered into the memory 10 with the cooperation of the injector nozzle 16 (FIG. 2).

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP90810999A 1990-03-29 1990-12-18 Dispositif pour métiers à tisser composé d'un réservoir de trame, d'une rÀ©serve de fil et d'un organe de transfert de fil Withdrawn EP0448914A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH104890 1990-03-29
CH1048/90 1990-03-29

Publications (1)

Publication Number Publication Date
EP0448914A1 true EP0448914A1 (fr) 1991-10-02

Family

ID=4201240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810999A Withdrawn EP0448914A1 (fr) 1990-03-29 1990-12-18 Dispositif pour métiers à tisser composé d'un réservoir de trame, d'une rÀ©serve de fil et d'un organe de transfert de fil

Country Status (1)

Country Link
EP (1) EP0448914A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2680802A1 (fr) * 1991-09-03 1993-03-05 Nissan Motor Systeme d'amenee de fil pour une machine a tisser.
BE1005500A3 (nl) * 1991-11-07 1993-08-10 Picanol Nv Inrichting voor het toevoeren van inslagdraden bij weefmachines.
EP0982422A1 (fr) * 1998-08-26 2000-03-01 N.V. Michel Van de Wiele Arrangement et support de bobines de trame pour métiers à tisser les tapis

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535025A1 (de) * 1974-08-15 1976-03-04 Vyzk Ustav Bavlnarsky Hohler spulenhalter
EP0171057A2 (fr) * 1984-08-06 1986-02-12 Tsudakoma Corporation Dispositif et procédé pour réparer un fil de trame dans un inséreur de trames
EP0282986A2 (fr) * 1987-03-16 1988-09-21 Tsudakoma Corporation Dispositif de guidage d'un fil
JPH0192452A (ja) * 1987-10-01 1989-04-11 Nissan Motor Co Ltd 無杼織機の緯糸処理装置
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535025A1 (de) * 1974-08-15 1976-03-04 Vyzk Ustav Bavlnarsky Hohler spulenhalter
EP0171057A2 (fr) * 1984-08-06 1986-02-12 Tsudakoma Corporation Dispositif et procédé pour réparer un fil de trame dans un inséreur de trames
EP0282986A2 (fr) * 1987-03-16 1988-09-21 Tsudakoma Corporation Dispositif de guidage d'un fil
JPH0192452A (ja) * 1987-10-01 1989-04-11 Nissan Motor Co Ltd 無杼織機の緯糸処理装置
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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2680802A1 (fr) * 1991-09-03 1993-03-05 Nissan Motor Systeme d'amenee de fil pour une machine a tisser.
US5329962A (en) * 1991-09-03 1994-07-19 Nissan Motor Co., Ltd. Weft supply changing and threading apparatus
BE1005500A3 (nl) * 1991-11-07 1993-08-10 Picanol Nv Inrichting voor het toevoeren van inslagdraden bij weefmachines.
EP0982422A1 (fr) * 1998-08-26 2000-03-01 N.V. Michel Van de Wiele Arrangement et support de bobines de trame pour métiers à tisser les tapis
BE1012130A3 (nl) * 1998-08-26 2000-05-02 Wiele Michel Van De Nv Inslagbobijnenopstelling en inslagbobijnenstand voor tapijtweefmachines.

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