WO1999064652A1 - Metier a tisser - Google Patents

Metier a tisser Download PDF

Info

Publication number
WO1999064652A1
WO1999064652A1 PCT/EP1999/003688 EP9903688W WO9964652A1 WO 1999064652 A1 WO1999064652 A1 WO 1999064652A1 EP 9903688 W EP9903688 W EP 9903688W WO 9964652 A1 WO9964652 A1 WO 9964652A1
Authority
WO
WIPO (PCT)
Prior art keywords
sley
reed
elements
loom according
connecting element
Prior art date
Application number
PCT/EP1999/003688
Other languages
German (de)
English (en)
Inventor
Jozef Peeters
Joseph Verhulst
Jean Marie Bamelis
Original Assignee
Picanol N.V.
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 Picanol N.V. filed Critical Picanol N.V.
Publication of WO1999064652A1 publication Critical patent/WO1999064652A1/fr

Links

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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3006—Construction of the nozzles
    • D03D47/302—Auxiliary nozzles
    • 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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3006—Construction of the nozzles
    • 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
    • D03D49/60—Construction or operation of slay

Definitions

  • the invention relates to a weaving machine with a back and forth swiveling sley, which carries a reed and at least one element which is adjustable by means of an adjusting mechanism between a position adjacent to the reed and a position away from the reed, the one which can be actuated by the movement of the sley Adjusting mechanism has at least one stationary adjusting element, to which at least one adjusting element that moves with the weaving blade is assigned.
  • a weaving machine of the type mentioned at the outset is known from US 4,485,850 and the corresponding EP 0 060 237 A.
  • the movable elements are relay nozzles and air guide fins.
  • the elements are adjacent to a U-shaped air duct of the reed in order to keep the air consumption as low as possible, which is necessary for the insertion of a weft into a shed.
  • these elements are moved away from the reed in order to avoid that these elements hit the edge of the goods or against a support device of the fabric.
  • the movable elements are on one in the longitudinal direction of the reed extending bar arranged which are guided by means of guide rods extending transversely to the reed in grooves of part of the sley.
  • a two-armed lever is provided as an adjustment mechanism for the movable elements, which is pivotably mounted in the sley. One arm of this lever engages with a fork-like end of the guide rod pins.
  • At the end of the other lever guide rollers are attached, which are guided in a link guide which is attached to the loom frame. The position in which the elements are during the insertion of a weft thread is determined by the shape of the backdrop and the position of the roller moving with the sley.
  • a coupling rod fixed to the weaving machine acts on the bracket, so that the adjustment mechanism here also adjusts the upper lamellae to a position adjacent to the reed and to a position remote from the reed, depending on the movement of the sley.
  • the accuracy of the position in which the top lamellae are adjacent to the reed is dependent on the tolerances of the adjustment mechanism and depending on the wear.
  • the invention has for its object to provide a loom of the type mentioned, in which the accuracy of the position in which the movable elements are adjacent to the reed is largely independent of the manufacturing accuracy of the transmission mechanism and possible wear.
  • the invention leads to the advantage that the position of the elements adjacent to the reed, which is generally the position in which a weft thread is inserted, can be precisely determined independently of the adjustment mechanism.
  • the adjustment mechanism only serves to move the elements out of the area of the reed so that the elements do not touch the fabric or a support device for the fabric.
  • the position taken here does not have to be tolerated particularly precisely.
  • the adjusting elements arranged stationary on the frame of the weaving machine do not have to be mounted with narrow tolerances, since they have no influence on the accuracy of the position of the elements adjacent to the reed.
  • the movable element or elements are arranged on a bar of a holder which extends in the longitudinal direction of the reed and which is attached to the sley so that it can move relative to the reed.
  • at least one connecting element which is flexible in the transverse direction is arranged between the holder and the sley, which serves as an adjusting element and which is associated with a deflecting element acting on the connecting element between the holder and the sley as a stationary adjusting element.
  • the connecting element is a band, in particular a steel band.
  • Other connecting elements such as chains or cords or the like, are of course also possible.
  • the connecting element in the stretched state serves as a limitation which limits the movement of the elements towards the reed.
  • the end position of the elements in which they are adjacent to the reed is thus defined in a simple manner.
  • the adjustment mechanism has no influence on this end position.
  • the stationary deflection element has an essentially cylindrical outer surface at least in the area facing the connecting element and is in particular designed as a rotatable roller. This makes it possible to bring the connecting element and the deflecting element into engagement, which is connected only with little wear. In addition, the advantage is obtained that if the deflection element comes into engagement with the connecting element, a relatively gentle increase in the force occurs with which the holder is moved back from the position in which the elements are in the vicinity of the reed.
  • FIG. 1 shows a section of a schematically illustrated sley with movable elements associated with a reed and an associated adjustment mechanism
  • FIG. 3 shows the section corresponding to FIG. 2 in a different position of the sley
  • FIGS. 2 and 3 shows a section corresponding to FIGS. 2 and 3 in a further changed position of the sley
  • FIG. 5 shows the section corresponding to FIG. 2 in an end position in which the reed strikes a weft thread
  • Fig. ⁇ is a section along the line VI-VI of Fig. 1 in a position of the sley corresponding to Fig. 5,
  • FIG. 7 shows a section through a modified embodiment in a position of the sley corresponding to FIG. 3,
  • FIG. 8 shows a section through a further embodiment in a position of the sley corresponding to FIG. 6
  • 9 shows a section through the embodiment according to FIG. 8 at another location in a position of the sley corresponding to FIG. 2,
  • FIGS. 6 and 10 shows a section through a further embodiment in a position of the sley corresponding to FIGS. 6 and
  • FIG. 11 shows a section through a further embodiment in a position of the sley corresponding to FIG. 6.
  • the weaving machine 1 shown in FIGS. 1 to 6 has a plurality of retaining strips 2 arranged in a row one behind the other, on each of which several elements 3 are provided, which are moved into and out of a shed each time a weft thread is inserted.
  • the elements 3 consist of relay nozzles, which are intended for an air jet weaving machine. These elements 3 are fastened to the retaining bar 2 with screws 4.
  • Each retaining strip 2 is movably mounted on a sley 5.
  • levers 7 are fastened to levers 7 by means of screws 6, each of which is pivotally mounted on a stilts 9 about an axis 8.
  • Each blind stilts 9 is attached to a blind shaft 11 of the sley 5 by means of screws 12 and 15.
  • Each lever 7 of the retaining strips 2 is loaded with a spring 10.
  • the springs 10 are arranged between a lever 7 and a block 13, which is fastened by means of screws 14 to a respective stilts 9.
  • the shop stilts 9 carry a shop beam 18 to which a reed 19 is attached by means of a feather key 16 and screws 17.
  • the shutter beam 18, the reed 19 and the retaining strips 2 arranged in series one behind the other extend substantially over the entire length of the shutter 5 in the embodiment shown.
  • the holding strips 2 with the elements 3 can be moved relative to the sley 5 and the reed 19 by means of an adjustment mechanism 20.
  • This adjustment mechanism 20 contains stationary arranged adjusting elements, which have a roller 22 rotatably mounted about an axis 21.
  • the axis 21 is seated in a holder 23 which is fastened to a frame 25 of the weaving machine by means of screws 24.
  • the adjustment mechanism 20 further contains adjustment elements which move with the sley, which are arranged as a connecting means between the holding strips 2 and the sley 5 and in the embodiment have the form of a flexible band 27.
  • the band 27 is fastened by means of the already mentioned screws 12 and a fastening part 29 with a curved contact surface 30 to a stilt 9 of the sley 5.
  • the storey stilts 9 have an opposite curvature 31 in the area of the fastening part 29.
  • the band 27 is fastened to a holding bar 2 by means of screws 26 and a fastening part 28 having a curvature 32.
  • the holding bar 2 likewise has a curvature 33 in the area of the fastening part 28.
  • a weft thread is inserted into a shed 36, which is formed by means of an upper set of warp threads 34 and a lower set of warp threads 35.
  • the filling of the weft thread can be carried out from the point in time at which a guide channel 37 of the reed 19 and the relay nozzles 3 are located entirely within an opening shed 36 until the point when the relay nozzles 3 leave the closing shed 36 again .
  • the entry positions are thus the positions that result from the rearmost position of the sley 5.
  • a registered weft thread is struck with the help of the reed 19 on the fabric 38, ie on the edge of the goods.
  • the sley 5 is in the foremost position.
  • the tissue 38 is by means of a support 39 supports and kept wide by means of a spreader 40.
  • the holding strips 2 are forced by means of the springs 10 into the entry position in which the relay nozzles 3 are located in the immediate vicinity of the reed 19 in the region of the guide channel 37.
  • the bands 27 are stretched between the retaining strips 2 and the sley 5 due to the force of the springs 10, so that the entry position in which the relay nozzles are in the vicinity of the reed 19 is determined by the length of the bands 27.
  • the belts 27 do not touch the rollers 22 in the entry position.
  • the relay nozzles 3 can be immersed under the fabric 38 and under the support 39.
  • the weft thread is struck by the reed 19 on the fabric edge of the fabric 38.
  • the retaining strips 2 are pressed again by means of the springs 10 into the entry position in which the relay nozzles 3 sheet 19 are adjacent in the region of the guide channel 37.
  • the belts 27 and the rollers 22 lose contact, so that the position of the holding strips 2 is then again exclusively defined by the length of the belts 27.
  • the belts 27 and the rollers 22 have a certain width and since the interacting surfaces of the belts 27 and the rollers 22 run in the longitudinal direction of the sley 5 and are arranged essentially parallel to one another, the surface load is in the region of the contact points between belts 27 and rollers 22 relatively small. Since the rollers 22 are rotatably mounted, it is achieved that the belts 27 practically do not slide over the rollers 22 or rub against the rollers 22. As a result, wear and / or damage to the surfaces engaging with one another are low.
  • the bands 27 are tensioned by the forces of the springs 10.
  • the bands 27 should therefore be made of a material that is only slightly stretchable, in particular steel or spring steel. Such a tape also has good fatigue strength. Since the belts 27 can be exposed to vibrations when they are released from the rollers 22, a layer of damping material can advantageously be provided on the belt in order to reduce vibrations of the belts 27.
  • tapes 27 made of material with damping properties are used, for example tapes 27 made of fiber-reinforced plastic, for example made of an epoxy resin reinforced with carbon fibers or KEVLAR fibers.
  • the belts 27 are straight when they come into contact with the rollers 22, ie they run tangentially to the rollers 22.
  • the first contact of the belts 27 with the rollers 22 causes only slight twisting the lever 7, which then increases with further deflection and bending of the bands 27 around the rollers 22. This leads to the corresponding forces exert the rollers 22 on the belts 27, do not occur abruptly, but increase gradually.
  • a plurality of bands 27 and a plurality of springs 10 are attached between a retaining bar 2 and the sley 5. This has the advantage that the retaining strip 2 is still moved against the force of the springs 10 by means of the belts 27 still present, even if a band 27 or a spring 10 breaks, and the springs 10 return them to the predetermined entry position.
  • the element 3 fastened on the retaining strip 2 is a weft monitor for an air jet weaving machine, which has, for example, a light transmitter 41 and a receiver 42.
  • the retaining strip 2 is relatively short and is mounted on a stilts only by means of a single lever 27 or a pair of levers 7.
  • the only relatively short retaining strip 2 has, for example, only a single element 3 or a pair of these elements 3. Distributed over the length of the sley 5, several such holding strips 2 can be arranged one behind the other.
  • the flexible connecting element between the holding bar 2 and the sley 5 consists of a rope 43 which is fastened to the holding bar 2 and the shutter stilts 9 of the sley 5 in accordance with the bands 27 in FIGS. 1 to 6.
  • the rope 43 can consist, for example, of a steel rope with a jacket made of damping material or also of a plastic rope, for example a nylon rope, which itself already has damping properties.
  • the holder 23 is fastened to the frame 25 of the weaving machine in an adjustable manner with the roller 22.
  • the holder 23 is provided with elongated holes 44 for the screws 24, so that the holder 23 is fastened to the frame 25 in an adjustable manner.
  • 25 spacer rings 45 are provided between the holder 23 and the frame, so that the holder 23 in different horizontal positions. sitions can be attached to the frame 25. If the roller 22 is positioned higher or lower, this has a significant influence on the amplitude of the movement of the holding strip 2, ie the amplitude increases as the roller 22 is arranged further away from the shop shaft 11.
  • roller 22 is adjusted essentially in the horizontal direction by means of more or fewer spacer rings 45, this essentially has an influence on the point in time at which the cable 43 comes into contact with the roller 22, ie the closer the contact occurs, the closer the roller 22 is positioned on the sley 5.
  • the loading shaft 11 is provided with a recess 46 in which fastening elements 47 fix the band 27.
  • the two fastening elements 47 are tensioned against one another by means of a screw 48.
  • the loading shaft 11 is provided with a corresponding bore 49
  • the band 27 practically does not slide on the stationary deflection elements when it comes into contact when pivoting the sley 5.
  • the stationary elements can therefore, without causing any risk of wear, from a non-rotatably arranged one, at least on the bands 27 facing side round element 50, which is fastened with screws 58 to a holder 51.
  • the elements can, for example, have the shape of a short cylindrical body rollers 22 corresponding to the exemplary embodiments according to FIGS. 1 to 6 and 7 can also be used.
  • the elements 3 which can be moved relative to the sley 5 and the straight weave 60 are hook-shaped guide elements for a rapier and / or for a rapier belt of a rapier weaving machine.
  • the levers 7 are rotatably mounted about an axis 8, each of which is mounted in a holder 52 which is fastened to the loading beam 18 with screws 53. It is further provided in this embodiment that the loading beam 18 is provided with a stop rib 54 for the retaining strips 2, against which the retaining strips 2 bear under the action of the springs 10 " in the entry position.
  • the stop rib 54 is expediently provided with a damping layer 59 provided to limit the noise and vibrations that occur when the retaining strips 2 hit the stop rib 54.
  • the bands 27 must be long enough in this embodiment so that the retaining strips 2 can come into contact with the stop rib 54. However, the aim should be to keep the belts 27 in this position almost in a tensioned state in order to avoid the forces occurring too suddenly when the belts 27 come into contact with the deflection elements 50 and stress the belts 27 very high. In this embodiment, the straps 27 are completely relieved as soon as the retaining strips 2 interact with the stop rib 54. This results in a very strongly varying tension within the belts 27. This must be taken into account when selecting the material for the belts 27 in order to avoid fatigue breaks or the like.
  • the springs 10 run essentially radially to the pivot axis 57 of the sley 5, so that the forces exerted by the springs 10 on the retaining strips 2 also essentially 'radially to the pivot axis 57 of the sley 5 run.
  • the springs 10 are supported against two lock nuts 55, the position of which can be adjusted on a screw 56 which is attached in the block i3.
  • the block 13 is in one piece with the male stilts 9.
  • one or more adjusting screws are provided in the stop rib 54 in order to be able to adjust the entry position of the holding strips 2.
  • the springs 10 "are arranged in such a way and the shutter stilts 9 are shaped in such a way that they lie outside the circumference of the deflection element 50 in every position of the sley 5.
  • a continuous deflection element 50 can be used Rod can be mounted on the frame 25 of the weaving machine, which interacts with all belts 27 of the individual stilts 9.
  • a holding strip 2 which extends over the entire width of the sley 5 and on which all the elements 3 are mounted, for example relay nozzles.
  • the retaining strip 2 is held in the region of its two ends with a lever 7, which can be pivoted about an axis 8 of a stilts 9.
  • Each lever 7 is provided with a lever arm 61 which cooperates with a stationary deflection element 62 in order to pivot the lever 7 away from the insertion position against the force of the springs 10.
  • the entry position is determined by the lever 7 starting against a stop 63 on the loading beam 18.
  • a connecting element 64 which is flexible in the transverse direction, is provided in the form of a chain and consists of four chain links 65.
  • These chain links 65 are connected to one another at joints 66, with one joint 67 articulated on a lever 7 and with a joint 68 on a stilt 9 of the sley.
  • the chain 64 cooperates with a stationary stop 62, which serves as a deflection element and moves the lever 7 with the retaining bar 2 and the elements 3 attached to it from the entry position.
  • the lever 7 is mounted on a torsion spring 69 which presses the lever 7 against a stop 63 in the entry position.
  • One end of the torsion spring 69 is rotatably connected to the lever 7.
  • the other end of the torsion spring 69 is fixed in a holder 70 by means of a screw 71 after the torsion spring 69 has been preloaded, for example while the lever 7 is resting on the stop 63.
  • the bracket 70 is attached to the loading beam 18 at a horizontal distance from the lever 7.
  • the torsion spring 69, together with the lever 7, is rotatably mounted in the adjacent shop stilts 9.
  • elements 3 which are attached to a retaining strip 2, of course, not only the relay nozzles, hook-shaped guide elements or weft guards mentioned as examples come into question, but of course also other elements that move into the shed during the insertion of a weft thread into the shed and when Striking the weft thread under the fabric 38 and a support 39 should dip.
  • Such elements can, for example, also be air guide lamellae, as are known from US 4,485,850, or hook-shaped guide elements for guiding a projectile in a projectile weaving machine or the like.
  • the invention can be used with any type of weaving machine, such as air jet weaving machines, rapier weaving machines, projectile weaving machines and other weaving machines.

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

Abstract

L'invention concerne un métier à tisser comportant un battant (5) animé d'un mouvement pivotant alternatif et portant un peigne (19) et au moins un élément (3) qui se règle au moyen d'un mécanisme de réglage (20) entre une position voisine du peigne et une position éloignée du peigne. Les éléments mobiles (3) sont maintenus par des ressorts (10) dans la position voisine du peigne (19), et entre les éléments de réglage (22, 27) fixes et se déplaçant avec le battant, il est prévu une liaison exerçant une force d'entraînement uniquement dans un sens opposé à la force du ressort.
PCT/EP1999/003688 1998-06-10 1999-05-28 Metier a tisser WO1999064652A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9800445A BE1012030A3 (nl) 1998-06-10 1998-06-10 Inrichting voor een weefmachine.
BE9800445 1998-06-10

Publications (1)

Publication Number Publication Date
WO1999064652A1 true WO1999064652A1 (fr) 1999-12-16

Family

ID=3891295

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/003688 WO1999064652A1 (fr) 1998-06-10 1999-05-28 Metier a tisser

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BE (1) BE1012030A3 (fr)
WO (1) WO1999064652A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1022368A1 (fr) * 1999-01-22 2000-07-26 Vuts, Liberec Unité de contrôle pour des soufflantes auxiliaires d'un métier à tisser pneumatique
CN103911752A (zh) * 2014-04-03 2014-07-09 湖州厉华妤婕联合纺织有限公司 一种异形筘耐磨结构
CN104862866A (zh) * 2014-02-21 2015-08-26 江南大学 一种适用于双向引纬的新型筘座脚固定方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039741A1 (fr) * 1980-05-08 1981-11-18 Walter Scheffel Métier à tisser avec insertion de fil au moyen d'un fluide
EP0060237A1 (fr) * 1981-03-11 1982-09-15 Tsudakoma Kogyo Kabushiki Kaisha Dispositif auxiliaire pour l'insertion de trame dans un métier à jet d'air

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039741A1 (fr) * 1980-05-08 1981-11-18 Walter Scheffel Métier à tisser avec insertion de fil au moyen d'un fluide
EP0060237A1 (fr) * 1981-03-11 1982-09-15 Tsudakoma Kogyo Kabushiki Kaisha Dispositif auxiliaire pour l'insertion de trame dans un métier à jet d'air

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1022368A1 (fr) * 1999-01-22 2000-07-26 Vuts, Liberec Unité de contrôle pour des soufflantes auxiliaires d'un métier à tisser pneumatique
CN104862866A (zh) * 2014-02-21 2015-08-26 江南大学 一种适用于双向引纬的新型筘座脚固定方法
CN103911752A (zh) * 2014-04-03 2014-07-09 湖州厉华妤婕联合纺织有限公司 一种异形筘耐磨结构

Also Published As

Publication number Publication date
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