EP1770192A1 - Dispositif d'appel - Google Patents

Dispositif d'appel Download PDF

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Publication number
EP1770192A1
EP1770192A1 EP05405562A EP05405562A EP1770192A1 EP 1770192 A1 EP1770192 A1 EP 1770192A1 EP 05405562 A EP05405562 A EP 05405562A EP 05405562 A EP05405562 A EP 05405562A EP 1770192 A1 EP1770192 A1 EP 1770192A1
Authority
EP
European Patent Office
Prior art keywords
fabric
removal device
roller
rollers
fabric removal
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Withdrawn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
EP05405562A
Other languages
German (de)
English (en)
Inventor
Michel Müller
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 EP05405562A priority Critical patent/EP1770192A1/fr
Publication of EP1770192A1 publication Critical patent/EP1770192A1/fr
Withdrawn legal-status Critical Current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
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/20—Take-up motions; Cloth beams

Definitions

  • the invention relates to a fabric removal device for the withdrawal of a fabric in a loom according to the preamble of claim 1, and a loom with such a fabric removal device.
  • a conventional fabric removal device is in the patent CH 619 497 described.
  • the product take-off device described comprises a take-off roll, which is referred to below as Einziehwalze, around which the fabric is guided, as well as a pressed against the Einziehwalze guide roller, which is referred to below as a pressure roller.
  • an additional Gewebeumlenkstelle which is arranged between the breast tree and Einziehwalze and close to the Einziehwalze and pressure roller to increase the wrap angle ⁇ with respect to the Einziehwalze.
  • the object of the invention is to provide a fabric removal device for the withdrawal of a fabric in a weaving machine, by means of which a slippage of the fabric in the fabric removal device is reduced or avoided.
  • the fabric removal device should also be suitable for the withdrawal of two-layer fabric.
  • Another object of the invention is to provide a weaving machine with such a take-off device available.
  • the fabric removal device for the withdrawal of a fabric in a weaving machine comprises a first driven drawing-in roller, around which the fabric is guided, and additionally a second driven drawing-in roller, around which the fabric is guided.
  • the wrap angle with respect to the draw-in rollers ie the angle over which the tissue rests on the draw-in rollers, is as large as possible, for example, between 100 ° and 356 ° and advantageously between 180 ° and 350 °.
  • the fabric removal device additionally comprises at least one nip roll for pressing the fabric against the first or second draw-in rolls.
  • the first and second Einziehwalze each with a drive means for example with a drive shaft and / or a gear and / or with a sprocket connected, which are coupled together.
  • the coupling can be done for example via a sprocket and a chain.
  • the drive means are designed such that the Einziehwalzen have the same direction of rotation, and in a second embodiment such that the Einziehwalzen have opposite directions of rotation.
  • at least one of the two Einziehwalzen is connected via a slip clutch with the respective drive means.
  • the second draw-in roll is spaced from the first draw-in roll, and preferably the draw-in rolls are stacked, one of the two draw-in rolls being installed in place of a cloth roll in the weaving machine, for example.
  • the fabric removal device additionally comprises a deflection roller or a deflection bar, which are arranged in front of the first drawing-in roller.
  • the deflecting roller or the deflecting bar are designed with low friction, for example by being provided with a low-friction coating, e.g. with a hard chrome layer that can be matted or blasted.
  • the fabric removal device additionally comprises a deflection device, which is arranged between the first and second drawing-in rollers in such a way that opposing tissue sections do not touch each other.
  • a deflection device which is arranged between the first and second drawing-in rollers in such a way that opposing tissue sections do not touch each other.
  • At least one of the pressure rollers is arranged substantially perpendicularly above the respective drawing-in roller. Thanks to the substantially vertical arrangement of the contact pressure, which is generated by the weight of the respective pressure roller, maximum. If the retraction rollers are stacked and the upper pressure roller is substantially perpendicular to the upper retraction roller, the train acting on the web section between the first and second retraction rollers creates another component of force which increases the contact pressure of the upper pressure roller.
  • the invention comprises a loom with a fabric removal device according to one of the embodiments described above.
  • the inventive fabric removal device has the advantage that by means of the same slipping of the fabric in the fabric removal device is reduced or avoided.
  • wrinkling can be reduced to an acceptable level, for example, as described, by performing tissue deflection with low friction.
  • the fabric can be cut off at any time according to the inventive draw-off device without disturbing the weaving process, which is particularly advantageous if there is no fabric tree and no external draw-off device to assist in pulling.
  • the inventive product removal device may consist of two individual and advantageously constructed identically fabric removal devices, for example, two conventional Goods removal devices, each with a retraction and pressure roller, are formed. This allows a simple and inexpensive production.
  • the loom comprises a warp beam 15, are rolled from the warp threads, a coating beam 14, on which the warp threads are deflected, and a shedding device 13, by means of Lifting and lowering the individual warp threads a shed 11 is formed.
  • the weaving machine shown comprises a reed 12 for striking a weft thread, which is not shown in FIG. 1, in the shed 11, to a cloth edge.
  • the fabric 8 formed in this way is drawn off by means of the fabric removal apparatus 10 via a fabric support 1, wherein the fabric removal apparatus comprises two driven draw-in rollers 3, 5, around which the fabric 8 is guided.
  • Fig. 2 shows a detailed view of the embodiment shown in Fig. 1 of a fabric removal device according to the present invention.
  • a fabric 8 is guided over a fabric support 1 and a deflection roller or a deflection bar 2 to the fabric removal device 10.
  • the deduction direction is marked in the drawing with an arrow 9.
  • the inventive product removal device comprises a first driven drawing-in roller 3, around which the fabric is guided, and additionally a second driven drawing-in roller 5, around which the fabric is guided.
  • the retracting rollers 3, 5 are arranged in an advantageous embodiment spaced from each other and, for example, as shown in Fig. 2, be arranged one above the other.
  • the fabric removal device additionally comprises in each case one pressure roller 4, 6 in order to press the tissue against the respective drawing-in roller 3, 5.
  • the fabric removal device 10 can be constructed, for example, from two individual fabric removal devices, each containing a Einziehwalze 3, 5 and a pressure roller 4, 6. If no cloth boom is provided in the weaving machine in question, the lower draw-in roller 5 can be installed instead of the cloth tree in an advantageous embodiment.
  • At least one of the pressure rollers is arranged substantially vertically above the respective drawing-in roller.
  • the upper pressure roller 4 is arranged substantially vertically above the upper Einziehwalze 3.
  • the tension which the second drawing-in roller 5 produces in the fabric can be used to additionally increase the contact pressure of the first pressure roller 4, for example by placing the second drawing-in roller, as shown in FIG. 2, under the first drawing-in roller 3.
  • the Einziehwalzen 3, 5 are each connected to a drive means, for example with a drive shaft or a Gear or a sprocket, which are coupled together.
  • the coupling of the drive means and thus the Einziehwalzen can be done both purely mechanically, for example via two chain wheels connected to a chain, as well as electronically by synchronization.
  • the drive means are coupled in such a way that the drawing-in rollers 3, 5 have the same direction of rotation, and in a second variant embodiment such that the directions of rotation of the drawing-in rollers are opposite. In opposite directions of rotation, for example, in two-layered fabric, once pull on the upper layer can be exercised and once on the lower.
  • the coupling between the drive means is not rigid, for example, in that at least one of the two Einziehwalzen is connected via a slip clutch to the respective drive means and / or at least one of the drive means is provided with a slip clutch.
  • the fabric removal device may comprise a deflecting roller or a deflecting bar 2, which is arranged in front of the first drawing-in roller 3.
  • a deflecting roller or a deflecting bar 2 which is arranged in front of the first drawing-in roller 3.
  • it is advantageous to carry out the deflection roller or the deflection bar with low friction for example by providing it with a low-friction and / or lubricious coating, such as e.g. a matted hard chrome layer, be provided.
  • a deflecting device 7, for example in the form of a roller or a bolt or a profile may be provided in the fabric removal device between the first and the second drawing-in rollers 3, 5 in order to avoid contact between individual fabric sections.
  • the deflection device 7 between the first and the second drawing-in roller is advantageously designed with low friction.
  • the weaving machine with inventive fabric removal device is suitable for the production of high-quality fabrics, such as technical fabrics, in which the weft density must be maintained exactly.
  • the weaving machine thus equipped is also suitable for the production of two-layer fabric, wherein the wrinkling due to of shifts between the fabric layers is low compared to conventional weaving machines.
  • Also particularly advantageous is the simple installation of the inventive fabric removal device in a loom, if this already has a first driven draw-in and the usual fabric is replaced by a second Einziehwalze around which the fabric is guided.
  • the usually existing cloth-tree drive can be used in this case as a drive for the second drawing-in roller.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP05405562A 2005-09-28 2005-09-28 Dispositif d'appel Withdrawn EP1770192A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05405562A EP1770192A1 (fr) 2005-09-28 2005-09-28 Dispositif d'appel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05405562A EP1770192A1 (fr) 2005-09-28 2005-09-28 Dispositif d'appel

Publications (1)

Publication Number Publication Date
EP1770192A1 true EP1770192A1 (fr) 2007-04-04

Family

ID=35840376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05405562A Withdrawn EP1770192A1 (fr) 2005-09-28 2005-09-28 Dispositif d'appel

Country Status (1)

Country Link
EP (1) EP1770192A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB374954A (en) 1930-11-17 1932-06-20 Guillaume Diederichs Fils De Improvements in fabric winding mechanism for looms
CH619497A5 (fr) 1977-07-06 1980-09-30 Sulzer Ag
JPH11107135A (ja) 1997-09-30 1999-04-20 Tsudakoma Corp 巻取装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB374954A (en) 1930-11-17 1932-06-20 Guillaume Diederichs Fils De Improvements in fabric winding mechanism for looms
CH619497A5 (fr) 1977-07-06 1980-09-30 Sulzer Ag
JPH11107135A (ja) 1997-09-30 1999-04-20 Tsudakoma Corp 巻取装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 09 30 July 1999 (1999-07-30) *

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