EP1348786A1 - Dispositif et procédé pour la fabrication des tissus de gaze - Google Patents

Dispositif et procédé pour la fabrication des tissus de gaze Download PDF

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Publication number
EP1348786A1
EP1348786A1 EP03405123A EP03405123A EP1348786A1 EP 1348786 A1 EP1348786 A1 EP 1348786A1 EP 03405123 A EP03405123 A EP 03405123A EP 03405123 A EP03405123 A EP 03405123A EP 1348786 A1 EP1348786 A1 EP 1348786A1
Authority
EP
European Patent Office
Prior art keywords
leno
movable
upright
slats
blades
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Withdrawn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
EP03405123A
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German (de)
English (en)
Inventor
Peter Schmid
Heinz Baumann
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
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 filed Critical Sultex AG
Priority to EP03405123A priority Critical patent/EP1348786A1/fr
Publication of EP1348786A1 publication Critical patent/EP1348786A1/fr
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • D03C7/06—Mechanisms having eyed needles for moving warp threads from side to side of other warp threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms

Definitions

  • the invention relates to a device for producing leno fabrics according to the preamble of claim 1 and a method according to claim 13.
  • Turner fabrics contain two warp thread systems, one warp thread system consisting of upright threads and a warp thread system consisting of Leno threads.
  • the upright and leno threads loop around each other, in order to incorporate the shots in a push-proof manner.
  • EP-A-1 101 850 is a device for forming a Leno binding known, which includes a reed, and a needle bar with Stand-up needles for guiding the stand-up thread and a movably mounted one Laying rail for the horizontal and vertical offset of the leno thread.
  • a disadvantage of the device according to EP-A-1 101 850 is that it is relatively large Distance between the upright needle eyelets leading the upright threads and the Laying rails that guide the leno threads. As a result of the relatively large Distance can lead to incorrect selections, i.e. the leno threads are not in the desired space but in an adjacent space stored between the standing needles.
  • the publication WO 00/03077 discloses a reed arrangement for Manufacture of leno fabrics which are related to the Device from EP-A-1 101 850 mentioned disadvantage of incorrect selections reduced.
  • the reed arrangement disclosed in WO 00/03077 includes a lower and an upper reed bar.
  • the reed bar which is firmly connected to a sley, is an upright slat attached to guide upright threads and the lower ends of flexible Leno blades for the lateral displacement of leno threads.
  • the top Ends of the leno blades are attached to the upper reed bar, which is slidably mounted in the lateral direction.
  • the reed assembly struck, the striking the Leno slats are used.
  • the reed arrangement according to WO 00/03077 has the disadvantage that depending on the weaving machine type unfavorable shed geometry results. Typically you get with the disclosed reed arrangement a very small shed, which is not can be adjusted.
  • Another disadvantage of the disclosed Reed arrangement consists in that the reed arrangement at every blade stop moved in the warp direction. This results in a lot of friction on the upright threads running through the upright needle eyelets. The result is frequent warp thread breaks and a limitation of the maximum speed less than 250 revolutions per minute.
  • the inventive device for producing leno fabrics in a weaving machine includes a needle bar or a comb for guidance of upright threads and movable leno slats for lateral offset of leno threads and vertically movable guide means for the vertical Movement of the leno threads.
  • the weaving machine includes a reed, the Needle bar or the comb and the movable leno blades one form a separate unit, which is arranged in front of the reed.
  • the guide means for the vertical movement of the Leno threads are designed as heald frames with heddle eyelets.
  • the movable leno slats for the lateral offset of the leno threads executed flexibly and at one end, for example the lower end, fixed and at the other end, for example the upper end, in the side Movable direction.
  • the needle bar preferably comprises Upright lamellae or needles with eyelets for picking up the upright threads and the Movable leno slats are between the upright slats or needles arranged. In a preferred embodiment there is between two a movable leno slat is arranged next to the upright slats.
  • the standing lamellae and the fixed end of the movable leno slats each in its own Needle bar attached.
  • the needle bar with the movable Leno blades for the lateral offset of the leno threads in the side Movable direction are attached.
  • the upright slats and / or the movable slats are preferred Leno blades in the longitudinal direction of the upright and leno threads, i.e. in Chain direction cranked in such a way that the movable leno slats are free of the upright slats can be deflected.
  • the movable leno slats to reduce the lateral offset on the Height of the upright slat ends a widening or one Thread guide slot or there are between two neighboring ones Upright slats or two movable per leno thread Leno blades arranged.
  • Standing slats each have a stop slat for a safe change of Leno threads arranged, the stop slats elastic and can be designed to be flexible, so that they are made using the leno threads are laterally deflectable.
  • the standing lamellae and the Stop slats aligned parallel to each other and the upper ends of the Stop slats through a wire or other linear element connected with each other.
  • At least the needle bar with the upright slats in a substantially vertical Movable direction is provided.
  • One method of making leno fabrics in a weaving machine is Subject of independent claim 13, wherein the loom preferably a weft insertion device, a reed and a device for producing leno fabrics according to one of claims 1 to 12 includes.
  • the procedure includes: Lifting the leno thread in a position above the vertical slats by means of the vertically movable Guide means, lateral offset of the leno thread by at least one Standing slat division by means of the movable leno slats, lowering the Leno thread in an underlying space between the Standing slats for the formation of a shed, entry of one Weft thread in the shed, which consists of at least one leno thread and at least one associated upright thread is formed, stop the registered weft using the reed and repeating the above Steps with the leno thread alternately in the starting position and in the laterally offset position in the respective lower one Space between the upright slats is lowered.
  • a weaving machine comprising a device for producing Turner fabrics according to one of claims 1 to 12 is the subject of independent claim 15.
  • the inventive device for producing leno fabrics in A loom has the advantage that the distance in the warp direction between the upright needle eyelets that guide the upright threads and the movable Leno blades, which guide the leno threads laterally, are kept to a minimum can be. For example, a distance of less than 1 mm between the upright lamellae and the movable leno lamellae around the Being able to deflect leno slats freely from the upright slats. False selections are thus kept to a minimum.
  • Another The advantage of the device according to the invention is that the Compartment size adjusted to the tissue by changing the shaft stroke can be.
  • the needle bar with the upright slats also becomes vertical moves, the stroke is distributed over the needle bar and shafts. At the Weaving process creates little friction in the upright slat eyelets, what high revs or maximum weft insertion rate allows.
  • the device according to the invention can be used on all Entry systems are used.
  • Fig. 1 shows a side view of an embodiment of a device for producing leno fabrics according to the present invention.
  • the Device 1 comprises a needle bar 6, which in turn has standing lamellae 7 with eyelets 7a for guiding upright threads 4, 4a and between the Standing blades 7 arranged, movable leno blades 8 for the lateral offset of leno threads 3, wherein the reference numeral 4a the part of the upright threads 4 lying in front of the upright lamella eyelets 7a designated.
  • the needle bar 6 with the Standing slats 7 and the movable leno slats 8 are not exactly vertical but has a slight inclination in the running direction of the standing round Leno threads 4 and 3.
  • the upright and movable leno slats 7 and 8 are attached with their lower end in the needle bar 6.
  • the Movable leno slats 8 are designed to be flexible and at their top End connected to the movably mounted rail 8a, so that it by means of the rail 8a laterally, i.e. transverse to the direction of rotation of the leno threads 3 can be deflected.
  • the movable leno blades 8 in the embodiment in its lower part in the direction of rotation or counter-rotation the leno threads 3 cranked so that they are free of the upright lamellae 7 are deflectable.
  • the device 1 shown in FIG. 1 further comprises heald frames Strand eyelets 9 for the vertical movement of the leno threads 3.
  • the leno thread 3 and the Strand eyelet 9 are shown in Fig. 1 in an upper position in which the Leno thread 3 runs above the standing lamella 7.
  • the device 1 comprises stranded eyelets 12, which are normally in the lower position to the front of the upright blades 7 to keep lying part of the upright threads 4a in the lower position.
  • Strand eyelets 12 can also be another deflecting element, for example a Deflection rod can be provided to the lying in front of the upright blades 7 To keep part of the upright threads 4a in the lower position.
  • the said Deflection element can be attached stationary as well as with the Needle bar 6 can be coupled.
  • the device 1 is installed in a weaving machine, which is also a Reed 2 with reed blades 2a includes and a weft insertion device for Inserting a weft thread, which is not shown in Fig. 1, the Needle bar 6 and the movable leno blades 8 of the device 1 a form a separate unit, which is arranged in front of the reed 2.
  • the leno thread is in a first step by lifting the strand eyelet 9 in an upper position 3 and then by deflecting the movable leno blade 8 in Directed towards the viewer, the leno thread 3 from one Side of the standing lamella 7 is moved to the other side, in Fig. 1 by the the side facing away from the viewer to the side facing the viewer Page.
  • the offset of the Leno thread also take place over several upright lamellas.
  • the leno thread is to form a shed in the the space between the Standing slats 7 lowered into a lower position 3 '.
  • Step 5 is the entry of a weft thread in the by the leno thread 3 'and the upright thread 4 formed shed.
  • Fabric 5 can also be the shed of a single leno weave a plurality of leno threads 3 'and / or formed from a number of upright threads 4 become.
  • the weft thread is inserted using the Rietes 2 struck.
  • the leno thread 3 alternately in the starting position and in the offset position in the respective underlying space between the standing lamellae 7 lowered becomes.
  • FIG. 2A shows a section from the front of a section of a needle bar 6 for the exemplary embodiment.
  • the needle bar comprises upright slats 7 for guiding the upright threads 4 and movable leno slats 8 for the lateral offset of the leno threads 3.
  • the movable leno slats 8 are flexible and are connected at their upper end to the movably mounted rail 8a.
  • the lower positions 3 'and 3 "of the leno threads are shown in Fig. 2A below the laterally offset position or below the starting position.
  • Fig. 2B shows the needle bar of Fig.
  • FIG. 2C shows the needle bar of FIG. 2A with rail 8a' shifted to the right, the leno blades deflected to the right and Leno threads offset laterally to the right and
  • FIG. 2C shows the needle bar of FIG. 2A with rail 8a "displaced to the left, leno blades deflected to the left and leno threads laterally returned to the starting position.
  • 2C shows the lateral offset s 3 of the leno threads, which is necessary to move a leno thread from one side of a standing lamella to the other side, as well as the required total stroke s 8 of the rail 8a, which results from the offset s 3 of the leno threads and an idle stroke dependent on the leno lamella division.
  • the idle stroke causes an undesirable loss of time.
  • FIG. 3A shows an embodiment variant of a needle bar 6 for the exemplary embodiment with upright slats 7 and in each case two movable leno slats 8.1 and 8.2 between two adjacent upright slats 7.
  • FIG. 3B shows the needle bar of FIG leno threads offset to the right. It can also be seen from FIG. 3B that the total stroke s 8 of the rail required can be significantly reduced by arranging the leno lamellae in pairs.
  • 3C shows a cross section through the needle bar of FIG. 3A and FIG. 3D an embodiment variant of the needle bar of FIG. 3A, in which the upright and leno lamellae are each fastened in a row, the two rows being offset from one another in the warp direction ,
  • the movable leno blades 8 above the upright blades 7 can be provided with a widening 8b.
  • Three different embodiments of movable leno slats with widening are shown in FIG. 4D.
  • FIGS. 5A and B Another possibility for reducing the total stroke s 8 of the rail 8a is shown in FIGS. 5A and B.
  • the movable leno blades 8 are provided with a thread guide slot 8c in this embodiment.
  • the two legs of the movable leno lamella 8 with thread guide slot can, as shown in FIG. 5A, be laterally offset in the foot area, so that the thread guide slot is also opened in the longitudinal direction of the leno and upright threads.
  • 6A and B show a further embodiment variant of a needle bar 6, in which the movable leno blades 8 are provided with laterally cranked thread guide slots 8c.
  • Stop slats 10 are used.
  • the stop plates 10 can be designed to be elastic and resilient, so that they can be formed by means of the Leno threads 3 can be deflected laterally. These are expediently Standing slats 7 and the stop slats 10 parallel to each other aligned and the upper ends of the stop blades 10 by a Wire or other linear element connected together.
  • FIG Device 7C shows a cross section of an embodiment of FIG Device according to the invention, in which the standing lamellae 7 and optionally available stop slats 10 in a first needle bar 6.1 are attached and the fixed ends of the leno blades 8 in one second needle bar 6.2.
  • the embodiment with two needle bars can have manufacturing advantages.
  • the movable leno blades 8 can in in this case also be rigid.
  • FIGS. 8A to C show an embodiment variant of the needle bar 6 from 7A, the stop plate 10 and the associated leno plate 8th consist of a single, contiguous piece. This Design variant offers particularly in tight spaces Benefits.
  • the needle bar 6 with the upright blades 7 alone or as a unit with the leno blades 8 in a substantially vertical Direction 6a movably mounted to the upright threads 3 in the direction 6a move.
  • the direction of movement 6a advantageously does not run exactly vertical, but slightly inclined towards reed 2.
  • the standing lamellae 7 with its free end facing upwards, i.e. the upright slats 7 are held at the lower end in the needle bar 6, while the eyelets 7a in located in the upper part of the upright slats 7.
  • Arrangement is the shed for the weft insertion through the above lying upright threads 4 and the underlying leno threads 3 'are formed.
  • the present invention also includes the mirrored one Arrangement with downright lamellae 7. It is advantageous in this case the arrangement of the leno blades 8 is also mirrored. In the The shed is mirrored by the arrangement below Upright threads and the upper leno threads are formed.
  • Fig. 9 shows an embodiment of a leno fabric, which with the device according to the invention was produced. That shown in Fig. 9 Leno fabric 5 consists of horizontally extending weft threads 11, and vertically extending leno and upright threads 3 and 4, with the Loop the leno and upright threads 3 and 4 to each other Include weft threads 11 so that they cannot slide.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP03405123A 2002-03-26 2003-02-25 Dispositif et procédé pour la fabrication des tissus de gaze Withdrawn EP1348786A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03405123A EP1348786A1 (fr) 2002-03-26 2003-02-25 Dispositif et procédé pour la fabrication des tissus de gaze

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP02405233 2002-03-26
EP02405233 2002-03-26
EP03405123A EP1348786A1 (fr) 2002-03-26 2003-02-25 Dispositif et procédé pour la fabrication des tissus de gaze

Publications (1)

Publication Number Publication Date
EP1348786A1 true EP1348786A1 (fr) 2003-10-01

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EP03405123A Withdrawn EP1348786A1 (fr) 2002-03-26 2003-02-25 Dispositif et procédé pour la fabrication des tissus de gaze

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1724381A1 (fr) * 2005-05-20 2006-11-22 Griffith Textile Machines Limited Appareil et procédé pour tisser des tissus de gaze

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE296759C (fr) *
DE466340C (de) * 1925-05-14 1928-10-06 Grossenhainer Webstuhl Und Mas Vorrichtung zur Herstellung von Drehergeweben
DE530724C (de) * 1931-07-31 Paul Reiher Verfahren und Vorrichtung zur Herstellung gemusterter Jacquarddrehergewebe
WO2000003077A1 (fr) * 1998-07-11 2000-01-20 Griffith Textile Machines Limited Tissage de gaze
EP1101850A1 (fr) * 1999-11-16 2001-05-23 Sulzer Textil AG Dispositif de formation d'une armure de gaze
EP1120485A2 (fr) * 2000-01-29 2001-08-01 Lindauer Dornier Gesellschaft M.B.H Métier à tisser un tissu en gaze

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE296759C (fr) *
DE530724C (de) * 1931-07-31 Paul Reiher Verfahren und Vorrichtung zur Herstellung gemusterter Jacquarddrehergewebe
DE466340C (de) * 1925-05-14 1928-10-06 Grossenhainer Webstuhl Und Mas Vorrichtung zur Herstellung von Drehergeweben
WO2000003077A1 (fr) * 1998-07-11 2000-01-20 Griffith Textile Machines Limited Tissage de gaze
EP1101850A1 (fr) * 1999-11-16 2001-05-23 Sulzer Textil AG Dispositif de formation d'une armure de gaze
EP1120485A2 (fr) * 2000-01-29 2001-08-01 Lindauer Dornier Gesellschaft M.B.H Métier à tisser un tissu en gaze

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1724381A1 (fr) * 2005-05-20 2006-11-22 Griffith Textile Machines Limited Appareil et procédé pour tisser des tissus de gaze
US7451788B2 (en) 2005-05-20 2008-11-18 Griffith Textile Machines Limited Apparatus and method for weaving leno fabric

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