EP2099965B1 - Procédé de tissage avec une croisure accrue de chaîne et métier à tisser pour effectuer le procédé - Google Patents

Procédé de tissage avec une croisure accrue de chaîne et métier à tisser pour effectuer le procédé Download PDF

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Publication number
EP2099965B1
EP2099965B1 EP07855987A EP07855987A EP2099965B1 EP 2099965 B1 EP2099965 B1 EP 2099965B1 EP 07855987 A EP07855987 A EP 07855987A EP 07855987 A EP07855987 A EP 07855987A EP 2099965 B1 EP2099965 B1 EP 2099965B1
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EP
European Patent Office
Prior art keywords
weaving
warp
sector
warp threads
shed
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.)
Not-in-force
Application number
EP07855987A
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German (de)
English (en)
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EP2099965A2 (fr
Inventor
Josef Dvorak
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.)
Vuts AS
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Vuts AS
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Publication date
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Publication of EP2099965A2 publication Critical patent/EP2099965A2/fr
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Publication of EP2099965B1 publication Critical patent/EP2099965B1/fr
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C13/00—Shedding mechanisms not otherwise provided for

Definitions

  • the invention relates to the method of weaving with increased crossing of warp, in which shed is created in two synchronised sectors (IZ, SZ), out of which in the first, pulse sector (IZ), the warp threads are separated into branches according to the specified pattern of weaving, and in the second, force sector (SZ), an increased crossing of warp branches separated in pulse sector (IZ) is performed, whereas activity in both sectors (IZ, SZ) is performed for every one working cycle, is running continuously and is mutually synchronised in every working cycle.
  • the invention further relates to the weaving loom for weaving with increased crossing of warp comprising the warp beam with package of warp threads, device for shed creating, loose weaving reed, device for inserting of weft into shed and cloth roller for winding of fabric, while device for creating of shed comprises the device of pulse sector for separation of warp threads into branches and device of force sector for realisation of increased crossing of warp, while both devices are driven synchronously.
  • Forming of the fabric is a force process, in result of which the inserted weft pushes into the wedge spacing between the pre-stressed warp threads and it is crossed by warp threads until the required interlacing structure is achieved.
  • the resistance of warp threads against deformation must be overcome (wave and elongation of thread elements) as well as the frictional resistance among the threads. Collectively these forces are called weaving resistance. This resistance must be overcome by an active force, usually by a beating force, which is created by mutual acting of weaving reed and fabric face due to drawing of the system fabric - warp.
  • the drag force is acting, whose value is proportional to the value of nominal axial force in the thread and value of crossing angle.
  • This angle depending on the sett and thread fineness, may reach the values up to 60°.
  • the crossing angle is nearly zero and also in the phase of maximum opening of the shed, it reaches the values less than 15°.
  • the weft is being pushed out from the fabric as a result of unbalanced elastic forces in the fabric and warp.
  • the only and not always effective means to overcome the weaving resistance and weaving-in the weft are the beating force and friction between threads.
  • Literature discloses a theory, that the possible way for inducing a force effect upon the weft during its forcing into warp threads is so called excessive crossing of warp threads.
  • the basic force in warp threads may thanks to distribution in force polygon create a component, which overcomes the weaving resistance and will form the fabric.
  • the pressure force will obtain the values which are similar to the beating force.
  • the weaving reed may have a lower lifting, because the area for weft insertion thanks to opening of warp may occur close to beating point. Reduction in dimensions of weaving reed means reduction of weight upon preserving or increasing its rigidity.
  • From EP 573 132 is known a method of weaving with increased crossing of warp, in which a shed for one working cycle is created in two synchronized sectors, out of which in the first, pulse sector, the warp threads are separated into branches according to the specified pattern of weaving, and in second, force sector, an increased crossing of warp branches separated in pulse sector is performed, wherein the separating of the warp threads into branches in the pulse sector and the increased crossing of the warp in the force sector is performed for every one working cycle. Without the auxiliary shedding bar the shuttle cannot be inserted into the shed. The space for weft insertion is created while the activity in both sectors is running continuously and is mutually synchronised in every working cycle.
  • the auxiliary shedding bar for increased crossing of the warp is inserted in the shed only during inserting of the weft and not during the beating motion of the reed, the auxiliary shedding bar can thus not assist in overcoming weaving resistance.
  • the goal of the invention is to enable overcoming of weaving resistance during the beat-up of the weft thread during weaving with increased crossing of warp.
  • the goal of the invention has been reached through the method of weaving with increased crossing of warp, whose principle consists in that the by separating of the warp threads into branches in pulse sector and by increased crossing of warp in force sector is except creating the space for weft insertion the weaving resistance overcome.
  • the principle of weaving loom for weaving with increased warp crossing consists in that, the device of force sector comprises separation unit with vertical lamellas having spacing between each other, at the same time to the separation unit there is assigned the gripper of warp threads of each branch of the shed, which is provided with catching means of warp threads of each of branches of the shed, while the catching means of warp threads are reversibly adjustable in vertical direction.
  • This machine enables weaving with increased crossing of the warp.
  • the invention is schematically shown in the drawing, where the Fig. 1 represents one exemplary embodiment of weaving loom for weaving with increased crossing of warp, the Fig. 2 another exemplary embodiment of weaving loom for weaving with increased crossing of warp, the Fig. 3 exemplary embodiment of gripper for realisation of second phase of shed with increased crossing of warp, and the Fig. 4 represents schematic arrangement of the shed according to the invention.
  • the weaving method with increased crossing of warp is such, that creating of shed for each working cycle of weaving loom is divided into two sectors IZ , SZ , out of which in the first sector, which in further text will be designated as pulse sector IZ , a separation of warp threads into branches according to the specified weaving pattern is performed, and in the second sector, which in further text will be designated as force sector SZ , an increased crossing into branches of separated warp threads is performed, at the same time the activity in both sectors IZ , SZ is running constantly and mutually synchronously.
  • Angle of opening of threads in pulse sector IZ in example of embodiment represented in the Fig.
  • weaving loom for weaving with increased crossing of warp will be described on an example of embodiment of several weaving looms, which comprise some identical or similar assemblies and some different assemblies. Arrangement of weaving loom is known for a specialist, so individual parts of the machine, which are not directly connected with the present invention, will not be described.
  • the represented weaving loom comprises pulse sector IZ , which in the represented example of embodiment is realised by a conventional device for shed creation, which is either of cam or shaft type.
  • the device forming the pulse sector IZ is formed by another suitable device for separation of warp threads into branches according to the prescribed pattern of weaving, e.g. it is formed by non-conventional separation or shedding mechanism of suitable parameters.
  • the weaving loom with pulse sector IZ formed by shaft shedding mechanism comprises a system of weaving shafts 2 , whose straight-lined reversible motion is secured by a shedding mechanism, as a rule by a cam shedding mechanism, whose activity is controlled by a controlling device.
  • the weaving shafts are in a known manner provided with healds 1 , 1' , which comprise the known eyelets 1a , 1a' , through which the warp threads 1b , 1b' are passing on their way between the not represented warp beam and the not represented cloth roller.
  • the weaving reed 1c In the direction X from the warp beam there is behind the pulse sector IZ , i.e. in the represented example of embodiment behind the weaving shafts 2 situated the weaving reed 1c , which is provided by a row of known dents having space between one another, while the warp threads are passing through the weaving reed 1c through space between the dents.
  • the weaving reed 1c is positioned on a reversibly adjustable slay 1d , which in the example of embodiment in the Fig. 1 is formed by a spring parallelogram connected with a cam drive or in an example of embodiment in the Fig. 2 it comprises reversibly rotatably mounted shaft with blowing nozzles etc.
  • the slay 1d may be created in another suitable manner, which nevertheless is not decisive for the principle of the invention itself.
  • the known not represented device for weft insertion into the shed 1e In the direction X from the warp beam behind the pulse sector IZ , i.e. in the represented example of embodiment behind the weaving reed 1c, there is situated the known not represented device for weft insertion into the shed 1e .
  • the weft inserted into the shed 1e after then during weaving is transported by a weaving reed 1c on the slay 1d into the face 1f of fabric 1g , which is gradually wound on the not represented cloth roller.
  • the warp threads 1b , 1b' are passing between the weaving reed 1c and pulse sector IZ , i.e. in represented example of embodiment through weaving shafts 2 , between the force sector SZ , in which on the warp threads separated into branches the increased crossing of warp is realised.
  • the force sector SZ is realised by means of separation unit 11 and gripper 8 .
  • the separation unit 11 in the represented example of embodiment comprises a system of stationary parallel vertical lamellas 12 , whose pitch need not be the same as pitch of dents of weaving reed 1c or pitch of healds 1 , 1' , so that through one space between the lamellas 12 even several warp threads may pass.
  • Lamellas 12 of separation unit 11 in a section corresponding to lifting of warp threads 1b , 1b' by acting of device of pulse sector IZ are sloped towards the vertical direction, so that the warp threads 1b , 1b' being lifted or dropped by device of pulse sector IZ by acting of lamellas 12 of the separation unit 11 are simultaneously moving into sides, e.g.
  • warp threads 1b , 1b' being lifted or dropped by device of pulse sector IZ by acting of lamellas 12 of separation unit 11 in the first phase of shed creation move traverse towards direction of the shed creation to the same side.
  • warp threads 1b , 1b' Due to the side separation motion of warp threads 1b , 1b' induced by the device of pulse sector IZ and by separation unit 11 the warp threads 1b of upper part of shed are shifting e.g. upwards to the right towards the shaft shedding mechanism, while the warp threads 1b' of lower part of shed are shifting e.g. downwards to the left towards the shaft shedding mechanism.
  • the catching means of gripper 8 are assigned, which catch the warp threads 1b , 1b' for realisation of increased crossing of warp.
  • the gripper 8 is coupled with driving device, which constantly and with required frequency and phase towards the device of pulse sector IZ realises the required lifting function. Thanks to this the gripper 8 is able to realise an increased crossing of warp in the force sector SZ accurately according to the time schedule corresponding to co-operation with other parts of the loom, especially with the device of pulse sector IZ and its lifting function.
  • the gripper 8 may to the separation beam 11 be assigned either from the side of weaving reed 1c , as represented in the Fig. 1 , or from the side of pulse sector IZ , as represented in the Fig. 2 .
  • the gripper 8 with straight-lined reversible motion.
  • the gripper 8 comprises a pair of bars 14 with cuts 15 , inlet openings 16 and retaining hooks 17 .
  • the cuts 15 , inlet openings 16 and hooks 17 correspond to the spacing between lamellas 12 of separation unit 11 and enable catching of warp threads of respective branch of shed on the hooks 17 .
  • the bars 14 are coupled with the straight-lined reversible drive, which provides for a continuous motion of bars 14 upwards and downwards with the required frequency, phase and amplitude.
  • the gripper 8 with rotation reversible motion when on a pair of reversible rotating shafts 18 are mounted the catching means 18a of warp threads 1b, 1b' separated by a device of pulse sector IZ and shifted to the side by the separation unit 11 .
  • the shafts 18 are coupled with rotating reversible drive, which ensures continuous reversible motion of shafts 18 with required frequency, phase and amplitude.
  • the separation unit 11 is situated in direction of warp threads from pulse sector IZ with healds 1 only after the gripper 8 .
  • Lifting functions of device of pulse sector IZ and device of force sector SZ are mutually synchronised so that, the device of pulse sector IZ and the device of force sector SZ continuously execute their lifting function with desired frequencies, phases and amplitudes.
  • the separator of pulse sector IZ and force sector SZ is situated between the device of pulse sector IZ and device of force sector SZ in the represented example of embodiment there is situated the separator of pulse sector IZ and force sector SZ .
  • the separator is formed by a pair of separating rods 19 .
  • One weaving cycle with increased crossing of warp runs so that the warp threads are by means of pulse sector IZ separated into upper and lower branch of the shed. During this separation the warp threads are guided into catching means of the device of the force sector SZ , e.g. to the hooks 17 .
  • the device of force sector SZ takes each of the branches of the shed and realises an increased crossing of warp.
  • the weft insertion through the shed with increased crossing, beating of weaving reed and return of the device of force sector SZ back there follows releasing of branches from the device of force sector SZ and catching of new branches of the shed by the device of force sector SZ .
  • another weaving cycle follows.
  • the devices of pulse and force sector IZ , SZ execute their function and mutually in a synchronous manner with desired frequency, phase and amplitude.
  • the invention may be used in the weaving looms.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Replacement Of Web Rolls (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Claims (8)

  1. Procédé de tissage au croisement de la chaîne élevé, pendant lequel la foule se forme en deux zones synchronisées (IZ, SZ), dont dans la première, dans la zone d'impulsion (IZ), les fils de chaîne se divisent en branches suivant le dessin imposé du tissage et, dans la deuxième, dans la zone de force (SZ), on effectue le croisement des branches élevé des fils de chaîne divisées dans la zone d'impulsion (IZ), en temps que dans les deux zones (IZ, SZ) le fonctionnement est effectué pour chaque un cycle de travail, il passe de façon continue et mutuellement synchronisée dans chaque cycle de travail, en temps que par la division des fils de chaîne en branches dans la zone d'impulsion (Z) et par le croisement de la chaîne élevé dans la zone de force (SZ) se forme l'espace pour l'insertion de la trame, caractérisé en ce qu'il faut aussi surpasser la résistance de tissage, ctd. la résistance des fils de chaîne à la déformation et la résistance de frottement entre les fils au moment d'enfoncement des fils de trames dans le tissu.
  2. Métier à tisser pour le tissage au croisement de la chaîne élevé, comprenant l'ensouple de chaîne avec l'enroulement des fils de chaîne, le dispositif pour la formation de la foule, le peigne de tissage mobile, le dispositif pour l'insertion de la trame dans la foule et l'ensouple d'étoffe pour l'enroulement du tissu, en temps que le dispositif pour la formation de la foule comprend le dispositif de la zone d'impulsion pour la division des fils de chaîne en branches et le dispositif de la zone de force pour la réalisation du croisement de la chaîne élevé, en temps que les deux dispositifs sont commandés de façon synchronisée, caractérisé en ce que le dispositif de la zone de force (SZ) comprend le diviseur (11) avec les lamelles verticales (12) avec les écarts entre elles, en temps qu'au diviseur (11) est incorporée la griffe à pince (8) des fils de chaîne de chaque branche de la foule qui est munie par des moyens de prise des fils de chaîne (1b, 1b') de chaque branche de la foule, en temps que les moyens de prise des fils de chaîne (1 b, 1b') sont réversibilement déplaçables dans le sens vertical.
  3. Métier à tisser suivant la revendication 2, caractérisé en ce que le dispositif de la zone de force (SZ) est par le séparateur de la zone d'impulsion (IZ) et de la zone de force SZ) séparé du dispositif de la zone d'impulsion (IZ).
  4. Métier à tisser suivant la revendication 2, caractérisé en ce que les lamelles (12) du diviseur (11), sur une partie de leur longueur corresponadante à la levée des fils de chaîne (1b, 1b'), sont à coup du dispositif de la zone d'impulsion (ZI) penchées par rapport au sens vertical.
  5. Métier à tisser suivant quelconque des revendications 2 ou 4, caractérisé en ce que la griffe à pince (8) comprend un couple de liteaux (14) avec les découpages (15), les trous d'entrée (16) et des crochets de cueillage (17), et les découpages (15), les trous d'entrée (16) et les crochets (17) correspondent avec les fentes entre les lamelles (12) du diviseur (11), en temps que les liteaux (14) sont accouplés avec la commande réversible rectiligne.
  6. Métier à tisser suivant quelconque des revendications 2 ou 4, caractérisé en ce que la griffe à pince (8) comprend un couple d'arbres réversiblement rotatifs (18), sur lesquels sont placés les moyens de prise (18a) des fils de chaîne (1 b, 1 b').
  7. Métier à tisser suivant quelconque des revendications 2 ou 6, caractérisé en ce que le dispositif de la zone d'impulsion (IZ) est formé par le dispositif pour former la foule conventionnel.
  8. Métier à tisser suivant la revendication 7, caractérisé en ce que le dispositif pour former la foule conventionnel est construit avec la levée limitée.
EP07855987A 2006-12-21 2007-12-18 Procédé de tissage avec une croisure accrue de chaîne et métier à tisser pour effectuer le procédé Not-in-force EP2099965B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2006-817A CZ305006B6 (cs) 2006-12-21 2006-12-21 Způsob tkaní se zvýšeným překřížením osnovy a tkací stroj k jeho provádění
PCT/CZ2007/000112 WO2008074268A2 (fr) 2006-12-21 2007-12-18 Procédé de tissage avec une croisure accrue de chaîne et métier à tisser pour effectuer le procédé

Publications (2)

Publication Number Publication Date
EP2099965A2 EP2099965A2 (fr) 2009-09-16
EP2099965B1 true EP2099965B1 (fr) 2011-03-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07855987A Not-in-force EP2099965B1 (fr) 2006-12-21 2007-12-18 Procédé de tissage avec une croisure accrue de chaîne et métier à tisser pour effectuer le procédé

Country Status (5)

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EP (1) EP2099965B1 (fr)
AT (1) ATE500364T1 (fr)
CZ (1) CZ305006B6 (fr)
DE (1) DE602007012937D1 (fr)
WO (1) WO2008074268A2 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655978B2 (ja) * 1985-10-18 1994-07-27 株式会社豊田自動織機製作所 無杼織機における緯糸処理方法
JP3011251B2 (ja) * 1992-06-05 2000-02-21 三菱重工業株式会社 面内多軸厚手織物の製織方法及び織機
JPH06297944A (ja) * 1993-04-09 1994-10-25 Suzuki Motor Corp 自動車ドア
DE10309260A1 (de) * 2003-03-03 2004-09-16 Berger Gmbh Verfahren zur Herstellung eines Gewebes und Weblitze, insbesondere zur Verwendung hierbei

Also Published As

Publication number Publication date
WO2008074268A3 (fr) 2008-08-07
DE602007012937D1 (de) 2011-04-14
CZ305006B6 (cs) 2015-03-25
CZ2006817A3 (cs) 2008-07-02
WO2008074268A2 (fr) 2008-06-26
ATE500364T1 (de) 2011-03-15
EP2099965A2 (fr) 2009-09-16

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