EP0570330B1 - Métier à tisser multiphase à foule linéaire - Google Patents

Métier à tisser multiphase à foule linéaire Download PDF

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Publication number
EP0570330B1
EP0570330B1 EP19930810293 EP93810293A EP0570330B1 EP 0570330 B1 EP0570330 B1 EP 0570330B1 EP 19930810293 EP19930810293 EP 19930810293 EP 93810293 A EP93810293 A EP 93810293A EP 0570330 B1 EP0570330 B1 EP 0570330B1
Authority
EP
European Patent Office
Prior art keywords
warp threads
laying
elements
guide
rotor
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 - Lifetime
Application number
EP19930810293
Other languages
German (de)
English (en)
Other versions
EP0570330A1 (fr
Inventor
Alois Steiner
Sandro Trecco
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
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 EP19930810293 priority Critical patent/EP0570330B1/fr
Publication of EP0570330A1 publication Critical patent/EP0570330A1/fr
Application granted granted Critical
Publication of EP0570330B1 publication Critical patent/EP0570330B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D41/00—Looms not otherwise provided for, e.g. for weaving chenille yarn; Details peculiar to these looms
    • D03D41/005—Linear-shed multiphase looms

Definitions

  • the invention relates to a row shed weaving machine according to the preamble of claim 1.
  • a series shed weaving machine with a weaving rotor is known from EP 0 093 078.
  • the weaving rotor has compartment holding members arranged on its surface.
  • the warp threads are inserted into the compartment holding members by means of two toothed racks, in such a way that a weft insertion channel is formed, through which a weft thread can be inserted in order to produce a fabric.
  • This row shed weaving machine has only two racks, so that only very simple fabrics can be produced.
  • the racks have to be deflected over a relatively large distance in order to ensure that the warp threads are securely inserted into the specialist holding members. If more than two racks were used, the warp threads would touch each other due to the large deflection of the racks, making the insertion process uncontrollable and prone to errors.
  • a row shed weaving machine is known with a shed-forming weaving rotor in which weft threads are inserted.
  • the weaving rotor is equipped with compartment-forming guide elements and stop combs, in which laying elements insert warp threads by moving them transversely to the direction of rotation.
  • the majority of the warp threads receive a deflection transversely to the direction of rotation during the shedding process, which is only canceled by the guide elements dipping away from the weft stop so that the warp threads realign themselves.
  • the warp threads are partly crossed in the weaving rotor.
  • the invention provides a remedy here. It solves the task of avoiding faults during the insertion process of the warp threads into the compartment-forming high and low points of the guide elements, which are caused by the contact of intersecting warp threads or by warp threads jumping over the comb. According to the invention, the object is achieved by the characterizing features of claim 1.
  • the dependent claims relate to advantageous developments of the invention.
  • a weaving rotor 7 is equipped with shed-forming guide elements 22 in the circumferential direction.
  • the combs 8 can also be used for striking the weft threads 10 against a fabric stop edge.
  • the guide elements 22 have high guides 11 and deep guides 12, into each of which one or more warp threads are inserted through the laying elements 14.
  • a weft channel 9 is also integrated in the guide element 22, through which the weft thread 10 can be inserted between the warp threads 1-6 into the compartment 13, which is kept open by the vertical guide 11 and the deep guide 12.
  • the ridge spacing angle ⁇ which also corresponds to the spacing angle of the guide elements 22, is an integer fraction of 360 °, for example 30 °.
  • the laying elements 14 are arranged starting from the stop edge against the direction of rotation 15 of the weaving rotor 7 on the circumference at a distance of the order of several comb spacing angles ⁇ .
  • the individual laying elements 14 are arranged parallel to the axis of the weaving rotor 7 at a mutual distance 23 in the direction of rotation 15 of the rotor 7, the laying elements 14 having a width 18. If the guide element 22 also serves as a stop comb or if separate stop combs are present between the guide elements 22 in the direction of the axis of the weaving rotor 7 or in the direction of rotation 15 without compartment-forming high and low points, then the distance 21 of the laying elements 14 from the highest point of the stop combs 8 usually in a range up to 10 mm.
  • the laying elements 14 are usually arranged along a circle segment, the radial center of which corresponds to the center of rotation of the weaving rotor 7.
  • the laying elements 14 can each be parallel to the axis of rotation of the weaving rotor 7 in differently shaped surfaces, for example a surface with a different radial center, or also in a plane, the laying elements 14 being arranged one behind the other.
  • the laying elements 14 consist of rails with guide holes or with notches spaced apart by integer multiples of the warp thread repeat.
  • a laying element 14, e.g. with warp threads 1, 1 ', 1 "etc., is controlled transversely to the direction of rotation 15 of the weaving rotor 7 according to a program and the warp threads are coordinated for the rotation of the weaving rotor 7 into gaps provided for insertion in the guide element 22 their warp threads in the present example alternately in high guides 11 and low guides 12 so that compartments 13 are formed.
  • the guide elements 22 rotating past the laying elements 14 with combs 8, high guides 11 and deep guides 12 run into the warp threads 1-6, 1'-6 'etc. which are tangentially supplied by the laying elements 14 and comb them in the direction of rotation 15 until they are from the warp threads are left in the direction of the fabric stop edge.
  • the combs 8 have the task of guiding the warp threads in such a way that the warp threads come to lie in the intended up and down guides.
  • two warp threads for example the adjacent warp threads 1 and 2 in FIG. 1 b, can form a crossing point 16 with mutual contact.
  • the warp threads 1, 2 which are usually stretched into the rotor 7 between the guide element 22 and the laying element 14 have an additional break point at the crossing point 16, which increases the freedom of movement of the warp threads 1 and 2, in particular in the direction of movement 14a the laying elements 14, hindered.
  • the freedom of movement of the warp threads is thereby restricted, in some cases in an unpredictable manner, which is why there is a risk that the warp threads will not come to lie in the intended up and down guides.
  • Fig. 1c shows the same situation as Fig. 1b in a plan view of the weaving rotor 7.
  • the mutually touching warp threads 1 and 2 can have an additional break point in the crossing point 16, which also, e.g. depending on the mutual friction, more or less pronounced. Without mutual contact of the warp threads, these would lie according to the position 1a, 2a shown in broken lines, and a crossing point 16a would result.
  • the guide points provided for the warp threads 1 and 2 are the laying elements 14 and the guide element 22, in the up and down guide 11, 12 of which the warp threads 1 and 2 are already inserted.
  • the deflection of respective thread sections of the warp threads 1 and 2 between the guide element 22 and the laying element 14 in the direction 14a is calculated according to the ray set.
  • the crossing point 16 reduces the length of the warp threads 1 and 2 that is freely movable with respect to the laying element 14 in the direction 14a.
  • the freedom of movement in the direction 14a has a positive effect if the crossing point 16 between the laying element 14 and the guide element 22 comes to be as close as possible to the guide element 22.
  • Warp threads 1 and 2 are therefore incorrectly inserted in the up and down channels.
  • FIG. 1a Another problem of intersecting warp threads can be seen from FIG. 1a.
  • the warp thread 4 lies in the high point 11 of the guide element 22. Without the immersed guide element 22a, the warp thread 5 would lie in the position 5a shown in broken lines and thus would not cross the warp thread 4 between the laying element 14 and the guide element 22.
  • the guide element 22a which dips into the warp threads 1-6, lifts the warp thread 5 and causes two additional crossing points 16b and 16c between the warp threads 4 and 5, which, however, do not necessarily have to be in contact with one another.
  • the crossing point 16c is close to the laying elements 14, which is why, due to the opposite movement, there is a risk that the two warp threads 4 and 5 will touch when inserted in the crossing point 16c and can thus hinder each other.
  • the warp threads 1-6 each in ascending numbering across Direction of rotation 15 lie next to one another, according to FIG.
  • the warp thread 2 lying in the fabric 20 to be created next to the warp thread 1 is inserted in the guide element 22 opposite to the direction of rotation 15 by a laying element 14 offset by at least a further distance 23 compared to FIG.
  • the other warp threads 4-6 also have pre-shifted crossing points 17.
  • the properties of a pre-shifted crossing point 17 are briefly illustrated using the warp threads 1 and 2.
  • the piece of thread 1b lying between the laying element 14 and the forwardly displaced crossing point 17a is relatively elongated compared to FIG. 1a with the crossing point 16, whereas the thread piece la lying between the crossing point 17a and the next following guide element 22 is relatively shortened.
  • this arrangement allows a greater deflection 14a of the laying elements 14 until the warp threads 1 and 2 touch each other when the warp threads 1 and 2 are not originally touching.
  • a forwardly displaced crossing point 17a influences the deviation of the warp threads from the desired position less strongly than a crossing point 16 when the warp threads 1 and 2 touch each other.
  • a shifted crossing point 17 reduces the rotor rotation angle, which is necessary in order to completely insert the respective warp threads into the up and down guides of the guide elements 22.
  • a pre-shifted crossing point 17 is usually also lower between the immersed guide element 22a and the leading guide element 22, respectively closer to the surface of the weaving rotor 7.
  • the dipping comb 8 can therefore dip deeper into the warp threads 1-6 until it meets a possibly shifted crossing point 17.
  • a greater force is therefore necessary in order to lift a crossing point 17 along the edge 8a of a comb 8 over the highest point of the comb.
  • the risk that a comb 8 is skipped is thus reduced, and yarns with a rougher surface can therefore also be combed out safely.
  • FIG. 3 shows an arrangement of the laying elements 14 and the warp threads 1-2, 1'-2 ', 1' '- etc., which are correspondingly influenced thereby, for a plain weave.
  • pre-shifted crossing points 17 can be realized, for example, with an arrangement according to FIG. 3.
  • the warp threads 1-2, 1'-2 ', 1' '- etc. lie in two laying elements 14, the laying elements being spaced apart by at least one minimum pitch 19.
  • the minimum pitch 19 is chosen, for example, such that it corresponds to at least twice the width 18 of a laying element 14 in the direction of rotation 15.
  • the pre-shifted crossing point 17 can of course be further advanced by the immersing guide element 22 in the direction of rotation 15 by increasing the distance between the two laying elements 14 beyond the minimum pitch 19. This inevitably reduces the distance between the crossing point 17 and the surface of the rotor 7.
  • the laying elements 14 can be arranged extremely compactly in the direction of rotation 15 in such a way that in each case two warp threads adjacent in the fabric 20 have a pre-shifted crossing point 17 with a minimum pitch 19.
  • the laying elements 14 can be arranged next to one another in the direction of rotation 15 in an extremely compact and space-saving manner, such as this that in each case two warp threads adjacent to the fabric 20 lie on laying elements spaced apart by at least one minimum pitch 19, which is why the warp threads have a pre-shifted crossing point 17.
  • pre-shifted crossing points 17 can also be achieved in that the laying elements 14 are spaced apart from one another correspondingly large in the direction of rotation.
  • 3 to 5 show advantageous arrangements of laying elements 14 and warp threads, which allow the entire laying element arrangement to be arranged in the smallest possible angular range with respect to the direction of rotation 15 of the weaving rotor 7 when the crossing points 17 are advanced.
  • the edge of a fabric is usually designed as a fabric edge, the fabric edge having a different weave than the rest of the fabric.
  • 6 shows an arrangement of the laying elements 14 and the associated warp threads 1-6, 1'-5 'and the associated edge warp threads K1, K2, K3 for a warp thread repeat of six threads.
  • Each edge warp thread K1, K2, K3 lies individually on a laying element 14, so that the edge warp threads K1, K2, K3 can be moved independently of the other warp threads 1-6. All adjacent warp threads, including the edge warp threads, have a minimum pitch 19, which is why the warp threads 1-6, K1, K2, K3 have crossover points 17 that are advanced.
  • FIG. 7 shows an example of a fabric edge consisting of three warp threads K1, K2, K3, these being inserted into guide elements 22 such that a fabric edge consisting of leno threads K1, K3 and an upright thread K2 is formed.

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

Claims (4)

  1. Métier à tisser multiphase à foule linéaire comportant un rotor de tissage (7) pourvu de peignes (8) ainsi que des éléments de pose (14) qui sont destinés à placer des fils de chaîne (1-6) dans les peignes (8) du rotor de tissage (7), les peignes (8) présentant des points haut et bas (11, 12) de formation de foule ainsi que des éléments de guidage (22), le rotor de tissage (7) étant logé à rotation dans une direction de rotation (15), et les éléments de pose (14) présentant dans une direction radiale vers le centre de rotation du rotor de tissage (7) un écart de pose (21) aux peignes (8), caractérisé en ce que les éléments de pose (14) sont disposés de façon que respectivement deux fils de chaîne (1-6) avoisinants dans un tissu à former sont guidés par des éléments de pose séparés (14), et en ce que ces éléments de pose séparés (14) prévus pour guider des fils de chaîne avoisinants (1-6) sont espacés dans la direction de rotation (15) de telle manière que le point de croisement (17) obtenu entre deux fils de chaîne avoisinants (1-6), en projection dans un plan s'étendant verticalement au rotor de tissage (7), se situe de façon que le tronçon de fil (1b) entre le point de croisement (17) et l'élément de pose (14) recevant le fil de chaîne correspondant (1-6) soit plus long que le tronçon de fil (1a) entre le point de croisement (17) et l'élément de guidage (22).
  2. Métier à tisser multiphase à foule linéaire selon la revendication 1, caractérisé en ce que l'écart de pose (21) entre les éléments de pose (14) et les peignes (8) est inférieur à 10 mm.
  3. Métier à tisser multiphase à foule linéaire selon l'une des revendications 1 ou 2, caractérisé en ce que tous les éléments de pose (14) se situent dans un plan.
  4. Métier à tisser multiphase à foule linéaire selon l'une des revendications 1 à 3, caractérisé par respectivement un élément de pose séparé (14) pour guider les fils de chaîne (K1, K2, K3) se trouvant au bord du tissu pour placer ceux-ci individuellement dans les éléments de guidage (22) de façon à former un bord de tissu, constitué de fils de tour (K1, K3) et de fils stationnaires (K2).
EP19930810293 1992-05-15 1993-04-21 Métier à tisser multiphase à foule linéaire Expired - Lifetime EP0570330B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19930810293 EP0570330B1 (fr) 1992-05-15 1993-04-21 Métier à tisser multiphase à foule linéaire

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP92810368 1992-05-15
EP92810368 1992-05-15
EP19930810293 EP0570330B1 (fr) 1992-05-15 1993-04-21 Métier à tisser multiphase à foule linéaire

Publications (2)

Publication Number Publication Date
EP0570330A1 EP0570330A1 (fr) 1993-11-18
EP0570330B1 true EP0570330B1 (fr) 1997-07-23

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Application Number Title Priority Date Filing Date
EP19930810293 Expired - Lifetime EP0570330B1 (fr) 1992-05-15 1993-04-21 Métier à tisser multiphase à foule linéaire

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0831159A1 (fr) * 1996-09-24 1998-03-25 Sulzer Rüti Ag Rotor de tissage pour un métier à tisser multiphasé à foule linéaire
BE1014790A6 (nl) * 2002-04-22 2004-04-06 Picanol Nv Weefmachine, alsmede werkwijze voor het vormen van een weefsel door middel van zulke weefmachine.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH543621A (de) * 1972-04-14 1973-10-31 Rueti Ag Maschf Einrichtung zum Bilden von Gewebebindungen
CH657876A5 (de) * 1982-04-28 1986-09-30 Rueti Ag Maschf Reihenfachwebmaschine mit einem webrotor.
DE3575167D1 (de) * 1985-04-02 1990-02-08 Sulzer Ag Webrotor fuer reihenfachwebmaschinen.
EP0456599B1 (fr) * 1990-05-11 1998-05-27 Sulzer RàœTi Ag Métier à tisser multiphasé à foule linéaire

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EP0570330A1 (fr) 1993-11-18

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