EP0101946B1 - Dispositif d'insertion de trame pour un métier à tisser à plat au moyen d'une navette à pince - Google Patents

Dispositif d'insertion de trame pour un métier à tisser à plat au moyen d'une navette à pince Download PDF

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Publication number
EP0101946B1
EP0101946B1 EP83107442A EP83107442A EP0101946B1 EP 0101946 B1 EP0101946 B1 EP 0101946B1 EP 83107442 A EP83107442 A EP 83107442A EP 83107442 A EP83107442 A EP 83107442A EP 0101946 B1 EP0101946 B1 EP 0101946B1
Authority
EP
European Patent Office
Prior art keywords
shooter
weft insertion
gripper
insertion mechanism
carriages
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
EP83107442A
Other languages
German (de)
English (en)
Other versions
EP0101946A2 (fr
EP0101946A3 (en
Inventor
Ludwig Schlecht
Peter Defranceski
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.)
Herman Wangner GmbH and Co KG
Original Assignee
Herman Wangner GmbH and Co KG
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 Herman Wangner GmbH and Co KG filed Critical Herman Wangner GmbH and Co KG
Priority to AT83107442T priority Critical patent/ATE29158T1/de
Publication of EP0101946A2 publication Critical patent/EP0101946A2/fr
Publication of EP0101946A3 publication Critical patent/EP0101946A3/de
Application granted granted Critical
Publication of EP0101946B1 publication Critical patent/EP0101946B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/24—Mechanisms for inserting shuttle in shed
    • D03D49/44—Mechanisms for inserting shuttle in shed whereby the shuttle is propelled by electric or magnetic means

Definitions

  • the invention relates to a weft insertion device for flat weaving machines with a shooter according to the preamble of claim 1.
  • the shooter is one with a weft bobbin, so that it inevitably has a large mass and therefore requires high forces to accelerate it are, which in turn can only be generated by heavy magnets.
  • the shooter is also introduced into the rifle boxes and thus removed from the action of the magnetic means. Mechanical means can also be provided for better acceleration of the shooter from the shooter box. The high weight of the shooter and the magnetic means limit the number of shot entries per minute.
  • Weft insertion devices are also known in which the shooter is dragged by magnetic forces only through a slide guided below the shed (DE-PS 211916 and DE-OSen 1785147, 2211491 and 2311 780).
  • the disadvantage here is that the shooter presses not only with his own weight, but also with the force generated by the magnetic means on the warp wires beneath him, which can damage them and, in addition, the shooter also wears out a lot.
  • a weft insertion device in which a rapier is dragged by a slide guided below the shed by means of permanent magnets.
  • the sled guides the rifle shooter on a closed path, so that the rifle shooter moves at a practically constant speed and its inertia is therefore of minor importance for the number of strokes.
  • the increase in the number of strokes in the known weft insertion device is consequently attributed to the elimination of the mechanical impact device.
  • a reciprocating rifle shooter is considered to be disadvantageous because there is a standstill at the reversal points and this results in inevitable delays.
  • a certain minimum weight cannot, however, be fallen short of in the case of rapier shooters who are shot in by means of mechanical impact devices, since the rapier shooter requires a certain kinetic energy to pull the weft thread through the shed.
  • the minimum weight of the rapier shooter therefore depends, among other things, on the weight of the weft thread and the length of the shed in the known device for guiding the shooter.
  • the object of the invention is to improve the weft insertion device known from DE-C-908 240 in such a way that a higher number of blows can be achieved.
  • the magnetic means are highly permanent permanent magnets, the magnets built into the gripper gun and the magnets of the slides having the same orientation, so that poles of the same name lie opposite each other and the shooters are attracted to each of the sleds.
  • a plurality of alternately oppositely oriented magnets are preferably provided both in the gripper shooter and in the slide.
  • the shooter and the sled contain three permanent magnets, which are alternately oriented in opposite directions and not only drag the rapier shooter through the shed, but also stabilize their orientation at the same time.
  • a particularly suitable material for the permanent magnets is samarium cobalt.
  • the smallest possible air gap of about 0.7 to 1 mm exists between the gripper shooter and the slide. The air gap is intended to enable the formation of an air cushion below the gripper guard, so that it comes into contact with the lower warp wires as little as possible.
  • the carriage is preferably driven by toothed belts, since these, in conjunction with a stepper motor, a speed-controlled three-phase motor or a disc rotor motor, enable precise positioning of the carriage and thus the gripper gunner at the shot transfer point.
  • Timing belts are preferred because of their low elongation, but chains or ropes can also be used.
  • the gripper shooter of the weft insertion device according to the invention preferably has a mass of less than 500 gr, and in particular that of less than 200 gr.
  • the weft insertion device Compared to mechanical weft insertion devices, the weft insertion device according to the invention has the advantage that there is no impact device with shock wave, undersleeper, top bat and picker, no shooter boxes and no catch lever, that the sley is shortened by approx. 1 m and that the shooter can be built very flat, so that the compartment height decreases. This in turn results in smaller warp thread tension differences when changing the shed and a smaller shaft stroke of 50 to 70 mm and thus the possibility of a faster shed change.
  • the smaller compartment height also means a smaller compartment opening angle, which means that a larger number of shaft frames can be provided.
  • a control pulse is triggered without contact when a specific crankshaft position is associated with it.
  • This control pulse actuates a preprogrammed control circuit, which gives the downstream stepper motor the number of revolutions, acceleration to be observed, final speed per unit of time, and deceleration when braking.
  • the motor stepper motor, three-phase motor or disc rotor motor
  • the motor experiences a large holding torque (approx. As large as the maximum torque) and the motor starts self-locking , so local fixation of the shooter in his current end position.
  • a control pulse is triggered again without contact, which triggers an actuation of the motor - this time in the opposite direction. This causes the next weft to be inserted.
  • the shooter is preferably accelerated linearly and decelerated linearly. However, the acceleration and deceleration need not be linear. The flawless retraction of the shooter into the respective end position is also monitored by contactless switches. If the shooter does not move to his end position due to a fault, the machine stops.
  • the tension exerted on the shot can thus be monitored during the entire weft insertion, the load peaks of the shot already being damped anyway due to the lower weight of the shooter and the flexible coupling between the slide and the gripper shooter to a certain extent.
  • the magnetic forces can be selected so that the gripper shooter leaves the magnetic field between the slides and remains when the tractive force exerted on the shot becomes too high.
  • the shooter does not experience wear on the reed, since the shooter no longer guides it along the reed, thus no longer causes abrasion. Due to the lower compartment height, the reed can also be made lower and thus more stable.
  • the weft insertion device according to the invention is also considerably quieter than a striking device. Because of the smaller rifle guns, there are also shorter shot ends and thus a saving in shot material.
  • the rapier 1 moves in the shed formed by the warp threads 2.
  • the sley 3 and its drive are of conventional design and are therefore not described in detail here.
  • the gripper shooter 1 is moved by magnetic forces which originate from a slide 4, 5 arranged above the shed and a slide arranged below the shed, which in turn is driven by toothed belts 6, 7 which are clamped at the front and rear ends of the slides 4, 5 and are driven by a stepper motor 9 via a gearwheel 8.
  • the gripper shooter has three permanent magnets 10a, b, c with a diameter of 20 to 24 mm, which have alternately opposite magnetic orientations.
  • the upper and lower slides 4, 5 also each contain 3 permanent magnets 11a, b, c of 20 to 24 mm in diameter, which are arranged in alignment with the permanent magnets 10a, b, c of the gripper gun 1, the aligned permanent magnets each having the same orientation , so that opposite magnetic poles always face each other.
  • the permanent magnets 11a, b, c of the carriages thus also have alternately opposite orientations.
  • the slides 4, 5 slide in rails 12, 13.
  • the rail 12 for the lower slide 5 is embedded in the top of the sley 3. It has an upwardly open C-profile, as can be seen in FIG. 2, so that the lower slide 5 is not only guided laterally but also in the vertical direction.
  • the upper carriage 4 is guided in a corresponding rail 13 with a C-profile which is open at the bottom, the upper holder of the reed 19 also serving as a support for the upper rail 13. Since the gripper shooter 1 has only about 1/10 of the weight that a gripper shooter has in a mechanical weft insertion device, namely less less than 500 gr, it can be of a very flat design, which results in a small compartment opening angle and thus a low overall height of the reed 19.
  • the reed 19 is thereby more stable and can be used as a support and holder for the upper rail 13.
  • the rails 12 and 13 are made of polyethylene to reduce friction and the running surfaces of the slides 4, 5 made of polyethylene.
  • the rails 12, 13 are arranged at such a distance that there is an air gap 20 between the lower slide 5 and the upper slide 4 on the one hand and the gripper shooter 1 on the other hand, which is approximately 0.1 to 0.2 mm larger than the diameter of warp wires 2.
  • This forms an air cushion during the movement of the looper 1 between the latter and the two slides 4, 5, which largely prevents contact of the looper 1 with the warp threads 2.
  • the gripper shooter 1 also has rollers 15 which reduce the friction at low speeds when an adequate air cushion cannot form yet.
  • the two slides 4, 5 are moved synchronously via toothed belts 6, 7.
  • the toothed belts 6, 7 run over toothed wheels 8 arranged on the side of the sley 3. While the toothed wheel 8 runs empty on one side, the toothed wheel 8 on the other side is driven by a stepper motor 9.
  • the stepper motor 9 is controlled in a manner known per se by a microprocessor. With a weight of 250 gr of the gripper shooter 1, a stepper motor with an output of 250 watts is sufficient to pull the gripper shooter through a 10 meter wide shed within one second.
  • the stepper motor 9 enables a uniform acceleration of the gripper contactor 1 and an even braking. At the same time, it enables the gripper shooter 1 to be positioned precisely at the shot transfer point. When the stepping motor 9 is supplied with 10,000 Hz, the positioning accuracy is less than 2 mm.
  • the gripper beak 14 of the gripper shooter 1 is of conventional design and is actuated pneumatically or electrically in the usual manner by a gripper switch cylinder 16, so that it need not be described in more detail here.
  • a contactor box is not required, since the gripper contactor 1 also in its two end positions, ie. H. is held by the carriage 4, 5 during the weft transfer.
  • the weft thread is held ready by one or more weft thread feeders 17 which can be moved in and out and are arranged on both sides of the weaving machine.
  • the gripper beak 14 is held in its open and closed position by permanent magnets.
  • a contactless switch 22 monitors on both sides of the weaving machine whether the rapier 1 has reached the end position in which the thread transfer takes place.
  • the weft insertion device according to the invention therefore has particular advantages in weaving machines with a weaving width of more than 5 m, because in such wide weaving machines the percentage of time for accelerating and decelerating the rapier marks is smaller in comparison to the time proportion of the continuous running speed of the rapier marks through the shed than for narrow weaving machines.
  • the wider the weaving machine the higher the possible increase in the route of a weaving machine compared to conventional weft insertion devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (4)

1. Dispositif d'insertion de trame pour métiers à tisser rectilignes, avec une navette déplacée sous l'effet de moyens magnétiques par des glissières (4, 5), l'une étant guidée au-dessus et l'autre au-dessous de la foule, les glissières étant, pour assurer un déplacement dans un sens et dans l'autre, reliées à un dispositif d'entraînement par l'intermédiaire d'un câble, d'une courroie ou assimilé, caractérisé en ce que
la navette est une navette à pince (1), ayant un poids maximal de 500 g,
que les moyens magnétiques sont des aimants permanents disposés dans la navette à pince (1) et dans les glissières (4, 5), et
que le dispositif d'entraînement est un moteur pas à pas (9), un moteur triphasé à régime réglé ou un moteur à entrefer plat, le positionnement des glissières (4, 5) et donc de la navette à pince (1) ayant lieu aux points de transfert de trame par l'intermédiaire du moment de maintien du moteur.
2. Dispositif d'insertion de trame selon la revendication 1, caractérisé en ce qu'il est prévu entre la navette à pince (1) et les glissières (4, 5), guidées au-dessous et au-dessus de la foule, un espace d'air de 0,7 à 1 mm.
3. Dispositif d'insertion de trame selon la revendication 1 ou 2, caractérisé en ce que les glissières (4, 5) sont entraînées par l'intermédiaire de courroies crantées (6, 7) par le moteur pas à pas, le moteur à courant triphasé ou le moteur à entrefer plat.
4. Dispositif d'insertion de trame selon l'une des revendications 1 à 3, caractérisé en ce que les pièces mobiles du dispositif d'insertion de trame sont réalisées en construction légère, la navette à pince (1) ayant un poids inférieur à 250 g.
EP83107442A 1982-07-28 1983-07-28 Dispositif d'insertion de trame pour un métier à tisser à plat au moyen d'une navette à pince Expired EP0101946B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83107442T ATE29158T1 (de) 1982-07-28 1983-07-28 Schusseintragvorrichtung fuer flachwebmaschinen mit einem greiferschuetzen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3228217A DE3228217C2 (de) 1982-07-28 1982-07-28 Schußeintragvorrichtung für Flachwebmaschinen
DE3228217 1982-07-28

Publications (3)

Publication Number Publication Date
EP0101946A2 EP0101946A2 (fr) 1984-03-07
EP0101946A3 EP0101946A3 (en) 1985-05-29
EP0101946B1 true EP0101946B1 (fr) 1987-08-26

Family

ID=6169545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107442A Expired EP0101946B1 (fr) 1982-07-28 1983-07-28 Dispositif d'insertion de trame pour un métier à tisser à plat au moyen d'une navette à pince

Country Status (8)

Country Link
US (1) US4529016A (fr)
EP (1) EP0101946B1 (fr)
AR (1) AR230846A1 (fr)
AT (1) ATE29158T1 (fr)
BR (1) BR8303983A (fr)
CA (1) CA1219191A (fr)
DE (2) DE3228217C2 (fr)
ES (1) ES8404433A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4762153A (en) * 1987-01-15 1988-08-09 Chuang Wu Chen Weaving loom with magnetic shuttle
JP2777400B2 (ja) 1989-04-05 1998-07-16 唄野 乃華 磁気シャットル織機におけるひ投げ装置
GB2240992A (en) * 1990-02-19 1991-08-21 Huang Chi Shuang Driving apparatus for shuttle of a loom
JP2779335B2 (ja) 1995-05-09 1998-07-23 ウー チェン チョアン 磁動シャットル織機のスレー構造
DE69906049T2 (de) * 1999-07-29 2003-09-04 Cheng, Cheng-Hsiung Webmaschine mit magnetischer Schütze
EP1777328A1 (fr) * 2005-10-01 2007-04-25 Markus Farner Procédé d'insertion de trame
US20080018176A1 (en) * 2006-05-26 2008-01-24 Sultex Ag Power supply for a rapier head
US9353467B2 (en) * 2013-01-22 2016-05-31 Mageba Textilmaschinen Gmbh & Co. Kg Shuttle as well as weaving machine and weaving process with such a shuttle
CN103710820B (zh) * 2013-12-25 2016-07-13 高密市三佳纺织有限公司 磁浮引纬自动织布机
CN114960001B (zh) * 2022-03-25 2023-06-20 郑州中远防务材料有限公司 一种薄膜纺织机

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE211916C (fr) *
DE30878C (fr) *
DE804785C (de) * 1948-10-02 1951-04-30 Letzerich K G H Schuetzenfuehrung und Schuetzenantrieb fuer Flach- oder Rundwebstuehle
FR989730A (fr) * 1949-04-27 1951-09-12 Mode d'entraînement de la navette dans les métiers à tisser rectilignes
DE908240C (de) * 1950-07-23 1954-04-05 Beche & Grohs G M B H Webstuhl
DE1281966B (de) * 1959-05-08 1968-10-31 Sulzer Ag Vorrichtung zum Fuehren von Webschuetzen im Webfach
US3114398A (en) * 1959-05-08 1963-12-17 Sulzer Ag Method and means for guiding shuttles through the shed in a loom for weaving
DE1785147C3 (de) * 1968-08-16 1974-04-18 Adolf 7451 Hechingensickingen Linka Schützenantrieb und Schützenführung für Wellenfachwebmaschinen
US3636989A (en) * 1969-12-29 1972-01-25 Finckh Metalltuch Maschf Wire loom with bobbinless weft inserting member
FR2128661A1 (en) * 1971-03-11 1972-10-20 Quattrocolo Vittorio Loom shuttle - is traversed along a guide track using moving magnet
DE2311780A1 (de) * 1973-03-09 1974-09-12 Inst Wlokiennictwa System zur beruehrungslosen befoerderung von gegenstaenden, insbesondere von behaeltern mit schussfaeden in einer wellenwebmaschine
GB1428164A (en) * 1973-03-16 1976-03-17 Inst Wlokiennictwa Apparatus for the contactless handling of objects
FR2333067A1 (fr) * 1975-11-27 1977-06-24 Greco Michel Procede et machine de tissage
FR2372256A1 (fr) * 1976-06-04 1978-06-23 Piquemal Jean Mouvement de battant avec rotation pour tissage a gabarit electronique
CS207821B1 (en) * 1978-03-11 1981-08-31 Josef Senk Appliance for transport of the weft insertors,mainly for the multished looms

Also Published As

Publication number Publication date
AR230846A1 (es) 1984-07-31
EP0101946A2 (fr) 1984-03-07
DE3373199D1 (en) 1987-10-01
US4529016A (en) 1985-07-16
BR8303983A (pt) 1984-04-24
ATE29158T1 (de) 1987-09-15
CA1219191A (fr) 1987-03-17
ES524535A0 (es) 1984-05-01
DE3228217A1 (de) 1984-02-09
EP0101946A3 (en) 1985-05-29
DE3228217C2 (de) 1985-12-05
ES8404433A1 (es) 1984-05-01

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