EP0681044A1 - Procédé et dispositif pour évacuer les déchets de faux lisières - Google Patents

Procédé et dispositif pour évacuer les déchets de faux lisières Download PDF

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Publication number
EP0681044A1
EP0681044A1 EP95105277A EP95105277A EP0681044A1 EP 0681044 A1 EP0681044 A1 EP 0681044A1 EP 95105277 A EP95105277 A EP 95105277A EP 95105277 A EP95105277 A EP 95105277A EP 0681044 A1 EP0681044 A1 EP 0681044A1
Authority
EP
European Patent Office
Prior art keywords
take
roller
rollers
waste
waste edge
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Withdrawn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
EP95105277A
Other languages
German (de)
English (en)
Inventor
Ignace Meyns
Patrick Glorie
Serge Vanrobaeys
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.)
Picanol NV
Original Assignee
Picanol NV
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 NV filed Critical Picanol NV
Publication of EP0681044A1 publication Critical patent/EP0681044A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • D03D49/70—Devices for cutting weft threads
    • 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
    • D03D47/40—Forming selvedges

Definitions

  • the invention relates to a method for removing waste edges which are formed during weaving on a weaving machine, the removal being carried out by means of two removal rollers which form a nip for a waste edge and at least one of which is driven directly, and a removal device for carrying out the method .
  • This take-off roller works together with a take-off roller which is provided with an elastic covering.
  • the waste edge is in the longitudinal grooves are pressed in so that a kind of positive locking is obtained.
  • pull-off devices in which the pull-off force is only introduced into the waste edge at the nip point of the two pull-off rollers, there is a risk that the waste edge will tear or that the tension of the waste edge will drop, in particular if irregularities occur in the waste edge.
  • the invention has for its object to provide a method of the type mentioned, in which disturbances when pulling off the waste edges are largely avoided.
  • waste edges are first fed to the peripheral surface of the first, directly driven take-off roller and loop around this take-off roller with a wrap angle of more than 150 ° in front of the nip with the second also directly driven take-off roller.
  • the invention is based on the knowledge that it is possible to apply higher pull-off forces and still gently introduce them into the waste edge when the pull-off forces are introduced into the waste edge by means of friction, this introduction taking place over a greater length of the waste edge because the waste edge the driven, designed as a friction roller take-off roller wraps before the nip. This makes it possible to introduce some of the pull-off force by friction between the waste edge and the peripheral surface of this first pull-off roller, so that the force is applied more smoothly and higher pull-off forces can be applied overall, while at the same time reducing the risk of the waste edge tearing.
  • the two take-off rollers are pressed against one another by means of spring force. This ensures that irregularities such as knots in the waste warp threads or auxiliary warp threads do not lead to a significant change in the pull-off force, since the two pull-off rollers can move apart against the spring force, but sufficient pull-off force by means of the friction between the first pull-off roller and the waste edge and is also applied by means of friction with the second take-off roller.
  • the waste edge wraps around the second take-off roller after the nip with a wrap angle of at least 150 °. Especially when the second take-off roller is also driven directly is the risk of winding formation is significantly reduced.
  • the waste edge leaves the second take-off roller in the take-off direction at a distance from the first take-off roller. This also further reduces the risk of winding formation.
  • a take-off device for carrying out the method, in which the take-off rollers are driven directly, guide means are provided which guide a waste edge to be removed to the peripheral surface of the first take-off roller, and in which the second take-off roller is arranged in such a way to the first take-off roller that the nip is at an angular distance of at least 150 ° to the point at which the waste edge strikes the peripheral surface of the first take-off roller.
  • Fig. 1 shows a group of warp threads (1) which run from a warp beam, not shown, and are passed through a shedding device (2) and a reed (3).
  • the shedding device (2) contains, for example, heald frames which are moved up and down in a certain pattern to form compartments through which weft threads (4) are inserted into the warp threads (1).
  • the weft threads (4) are hit one after the other with the help of the reed (3) on the fabric edge of the fabric (5).
  • the tissue (5) is guided to a fabric tree via a breast tree (not shown) and a take-off device.
  • the weft threads (4) are also introduced and bound in waste warp threads (6), which are drawn off from their own bobbins (7).
  • the waste warp threads (6) are moved up and down in a specific pattern by means of their own shedding device (8) in order to incorporate one weft thread (4) at a time.
  • the waste warp threads (6) are also drawn off from the mentioned warp beam (not shown), which are then moved up and down by the same shedding device (2) to form shed sheds.
  • a separating device (9) which cuts the weft threads (4) between a fabric edge (10) and the waste warp threads (6), so that a so-called waste edge (11) is formed.
  • This waste edge (11) consists of waste warp threads (6), in which the ends of the weft threads (4) are bound or woven.
  • the waste edge (11) is guided through guides (12 and 13) to a take-off device (14), which is shown only schematically in FIG. 1, and is drawn off from this and then conveyed to a collecting device (15), for example a container.
  • the trigger device (14) pulls the waste edge (11) at a predetermined speed such that the waste edge (11) and the not yet cut weft threads (4) remain taut. This take-off speed is chosen so that it corresponds to the speed of the fabric (5) or is slightly greater.
  • the take-off device (14) shown in FIGS. 2 and 3 has a holder (16) which is attached to a machine frame (18) of the weaving machine with fastening elements (17).
  • the holder (16) carries an axis (20) of a first take-off roller (19).
  • a lever (21) which can be pivoted about an axis (22) is mounted on the holder (16).
  • This lever (21) receives the axis (24) of a second take-off roller (23).
  • the take-off rollers (19, 23) are resiliently pressed together.
  • pins (25, 26) are attached to the holder (16) and the lever (21), in which a tension spring (27) is suspended, which pulls the take-off rollers (19, 23) together.
  • the guide (13) consists of an eyelet arranged stationary on the machine frame (18).
  • the guide (12), which can also be an eyelet, is adjustable to adapt to the fabric width.
  • the collecting device (15) for the waste edge (11) consists in the illustrated embodiment of a container. In a modified embodiment, a driven flange coil is provided as the collecting device (15), on which the waste edge (11) is wound under a certain tension.
  • the first take-off roller (19) has a roller body (29) rotatably mounted on the axis (20).
  • a coaxial gearwheel (30) is fastened to this roller body (29) by means of screws, for example.
  • the second take-off roller (23) has a roller body (31) rotatably mounted on the axis (24), to which a coaxial gear wheel (32) is fastened, for example by means of screws.
  • the take-off rollers (19, 23) are provided with friction linings, for example made of a somewhat resilient plastic material exist and which are glued to the roller body (29 and 31). The take-off rollers (19, 23) are driven in opposite directions at the same peripheral speed.
  • the gears (30, 32) preferably have the same pitch circle, while the take-off rollers (19 and 23) also preferably have the same outside diameter.
  • the gearwheels (30 and 32) are driven by means of a drive gearwheel (33) which is mounted in a rotationally fixed manner on a shaft (34) mounted in the machine frame (18) of the weaving machine.
  • the drive of the shaft (34) is derived from the fabric extraction device, not shown, and / or the main shaft of the weaving machine.
  • the waste edge (11) is guided in this way and the take-off rollers (19 and 23) of the take-off device (14) are arranged such that the waste edge (11) in the take-off direction initially almost completely, ie by about 270 °, the circumference of the first take-off roller (19) , loops before it reaches the nip between the first take-off roller (19) and the second take-off roller (23). After the nip, the waste edge (11) wraps around the second take-off roller (23) also over a large part of its circumference, ie more than 180 °.
  • the waste edge (11) leaves the second take-off roller (23) almost in the vertical direction at a point which is clearly distant from the nip between the first take-off roller (19) and the second take-off roller (23), ie at a distance of at least the radius corresponds to the second take-off roller (23).
  • the waste edge (11) thus leaves the second take-off roller (23) with a course which is clearly at a distance from the first take-off roller (19).
  • the common plane (35) of the axes (20 and 24) of the draw-off rollers (19 and 23) runs approximately at an angle of 45 ° to the horizontal (and thus also to the vertical).
  • the advantage is achieved that the force, with which the waste edge (11) is kept under tension and pulled off, is distributed over the circumference of the first take-off roller (19) to the nip point. This makes it possible for a relatively large force to be transmitted to the waste edge (11) without slippage. For the transferable tensile force, it is also favorable that the two take-off rollers (19 and 23) are driven in opposite directions with the same peripheral speed.
  • the function of the extraction device (14) according to the invention is not influenced by the voltage that the waste edge (11) has between the extraction device (14) and the collecting device (15).
  • Fig. 4 it is shown that an irregularity (36) of the waste edge (11) moves towards the extraction device (14).
  • the take-off rollers (19 and 23) are close to each other and the gears (30, 32) mesh with each other. If the irregularity (36) runs in between the draw-off rollers (19, 23), these are moved apart somewhat, while the gears (30 and 32), however, continue to mesh with one another and continue to drive the draw-off rollers (19 and 23).
  • the irregularity (36) is thus easily drawn in and pulled through between the take-off rollers (19, 23).
  • the take-off rollers (19 and 23) and the gear wheels (30, 32) return to the position shown in FIG. 4.
  • an actuating lever (37) is provided on the lever (21).
  • the take-off device (14) according to the invention can be used regardless of the width of the fabric. If a narrower or wider fabric is to be woven, only the guide (12) has to be moved accordingly.
  • a take-off device (14) which has a pair of take-off rollers for each waste edge.
  • the take-off device (14) also pulls a second waste edge (38) around the guide roller (28), around the first take-off roller (19) through a nip between the first take-off roller (19) and a second take-off roller (39) and around the second take-off roller (39) is guided around until it also leaves the second take-off roller (29) in the vertical direction.
  • the waste edge (11) runs in a plane (40), while the waste edge (38) runs in a plane (41) that is at a certain axial distance to the plane (40).
  • the second take-off roller (23) for the waste edge (11) and the second take-off roller (39) for the waste edge (38) are arranged offset to one another in the axial direction.
  • the two waste edges (11 and 38) are guided by the same guide roller (28) and the same take-off roller (19).
  • the second take-off roller (39) for the waste edge (38) is also held by means of a lever (42) which is attached to the holder (16) so as to be rotatable about the axis (22).
  • the lever (21) of the second take-off roller (23) for the waste edge (11) can be pivoted about the same axis (22).
  • the holder (16) and the lever (42) are provided with pins (43, 44) to which a tension spring (45) is attached in order to pull the second draw-off roller (39) towards the first draw-off roller (19).
  • the second take-off roller (39) is arranged by means of a roller body (46) on a shaft (47) which is mounted in the lever (42).
  • the gearwheel (30) of the draw-off roller (19) is driven via the gearwheel (33) and in turn drives both the gearwheel (32) of the second draw-off roller (23) and also the gearwheel (48) of the second draw-off roller (39).
  • the gearwheel (48) of the second take-off roller (39) is mounted on the shaft (47) so that it cannot rotate, on which the take-off roller (39) is also arranged in a rotationally fixed manner.
  • the two draw-off rollers (23 and 39) can be moved independently of one another relative to the first draw-off roller (19) against a spring force. This makes it possible, as explained in FIGS. 4 and 5, for the waste edges to be irregular (11, 38) between the draw-off rollers (19, 23) and (19, 39).
  • the gear wheel (33) is driven by means of its own drive motor which essentially drives the take-off rollers (19, 23, 39) at a peripheral speed which corresponds to the speed of the fabric (5).
  • the take-off rollers (19, 23) or (19, 39) are each driven by their own, separately controlled drive motor.
  • the take-off device (14) according to the invention can be used for all types of weaving machines in which a waste edge is formed.
  • the invention is independent of whether air, grippers, projectiles or other systems are used as the entry system. It is also independent of the mechanism that forms the weaving fan or subjects.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
  • Treatment Of Fiber Materials (AREA)
EP95105277A 1994-05-04 1995-04-07 Procédé et dispositif pour évacuer les déchets de faux lisières Withdrawn EP0681044A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9400457A BE1008376A3 (nl) 1994-05-04 1994-05-04 Weefmachine met afvallint.
BE9400457 1994-05-04

Publications (1)

Publication Number Publication Date
EP0681044A1 true EP0681044A1 (fr) 1995-11-08

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ID=3888138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105277A Withdrawn EP0681044A1 (fr) 1994-05-04 1995-04-07 Procédé et dispositif pour évacuer les déchets de faux lisières

Country Status (3)

Country Link
US (1) US5560400A (fr)
EP (1) EP0681044A1 (fr)
BE (1) BE1008376A3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0906978A2 (fr) * 1997-10-02 1999-04-07 Lindauer Dornier Gesellschaft M.B.H Procédé et dispositif pour obtenir des déchets de fil de trame purs des lisières de retenue
DE19743611A1 (de) * 1997-10-02 1999-04-15 Dornier Gmbh Lindauer Verfahren und Vorrichtung zum Erzeugen von sortenreinem Schußfadenabfall aus Fangleisten
US6039086A (en) * 1997-10-02 2000-03-21 Lindauer Dornier Gesellschaft Mbh Separating weft thread waste of a single uncontaminated material from untwisted leno binding threads in trimmed catch selvages
DE19954139A1 (de) * 1999-11-11 2001-06-07 Dornier Gmbh Lindauer Verfahren und Vorrichtung zur Überwachung des Abziehens von Fangleisten auf Webmaschinen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6227254B1 (en) * 1998-05-05 2001-05-08 The Goodyear Tire & Rubber Company Method and apparatus for recycling selvage warp yarns
US6161743A (en) * 1999-06-08 2000-12-19 Wedges/Ledges Ticket dispenser using sharp pins on a driver roller to advance tickets
BE1015461A6 (nl) * 2003-03-18 2005-04-05 Picanol Nv Inrichting voor het vormen van een zelfkant aan een weefsel.
US8376202B2 (en) * 2006-09-14 2013-02-19 Clinton D. Baker Apparatus for recovering hose

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461920A (en) * 1966-08-29 1969-08-19 Toemon Sakamoto Apparatus for cutting weft yarn ends under tension on a shuttleless loom
CH514704A (de) * 1970-04-30 1971-10-31 Rueti Ag Maschf Verfahren und Einrichtung zum Bilden einer Hilfskante beim Weben
DE2620894A1 (de) * 1975-08-25 1977-03-10 Elitex Zavody Textilniho Vorrichtung zum abzug von dreherabfall bei webmaschinen
US4513791A (en) * 1983-02-01 1985-04-30 Burlington Industries, Inc. Leno selvaging and stretch nozzle system
US4616680A (en) * 1984-06-08 1986-10-14 Draper Corporation Catch-cord drawing device for looms

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR895325A (fr) * 1943-01-28 1945-01-22 Etoile Film Dispositif pour le guidage du film dans les appareils de projection cinématographique
US3760609A (en) * 1971-09-28 1973-09-25 Fouquet Werk Frauz & Planck Fabric pull-off mechanism, particularly for circular knitting machines
US4453572A (en) * 1982-07-26 1984-06-12 Burlington Industries, Inc. Method and apparatus for waste selvage removal
US4691743A (en) * 1985-01-28 1987-09-08 Societe Alsacienne De Construction De Material Textile Method and device for removal of waste slivers in a weaving loom

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461920A (en) * 1966-08-29 1969-08-19 Toemon Sakamoto Apparatus for cutting weft yarn ends under tension on a shuttleless loom
CH514704A (de) * 1970-04-30 1971-10-31 Rueti Ag Maschf Verfahren und Einrichtung zum Bilden einer Hilfskante beim Weben
DE2620894A1 (de) * 1975-08-25 1977-03-10 Elitex Zavody Textilniho Vorrichtung zum abzug von dreherabfall bei webmaschinen
US4513791A (en) * 1983-02-01 1985-04-30 Burlington Industries, Inc. Leno selvaging and stretch nozzle system
US4616680A (en) * 1984-06-08 1986-10-14 Draper Corporation Catch-cord drawing device for looms

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0906978A2 (fr) * 1997-10-02 1999-04-07 Lindauer Dornier Gesellschaft M.B.H Procédé et dispositif pour obtenir des déchets de fil de trame purs des lisières de retenue
DE19743612A1 (de) * 1997-10-02 1999-04-15 Dornier Gmbh Lindauer Verfahren und Vorrichtung zum Erzeugen von sortenreinem Schußfadenabfall aus Fangleisten
DE19743611A1 (de) * 1997-10-02 1999-04-15 Dornier Gmbh Lindauer Verfahren und Vorrichtung zum Erzeugen von sortenreinem Schußfadenabfall aus Fangleisten
EP0906978A3 (fr) * 1997-10-02 2000-03-15 Lindauer Dornier Gesellschaft M.B.H Procédé et dispositif pour obtenir des déchets de fil de trame purs des lisières de retenue
US6039086A (en) * 1997-10-02 2000-03-21 Lindauer Dornier Gesellschaft Mbh Separating weft thread waste of a single uncontaminated material from untwisted leno binding threads in trimmed catch selvages
DE19743612C2 (de) * 1997-10-02 2001-01-11 Dornier Gmbh Lindauer Verfahren und Vorrichtung zum Erzeugen von sortenreinem Schußfadenabfall aus Fangleisten
DE19743611C2 (de) * 1997-10-02 2001-05-23 Dornier Gmbh Lindauer Verfahren und Vorrichtung zum Erzeugen von sortenreinem Schußfadenabfall aus Fangleisten
DE19954139A1 (de) * 1999-11-11 2001-06-07 Dornier Gmbh Lindauer Verfahren und Vorrichtung zur Überwachung des Abziehens von Fangleisten auf Webmaschinen
US6286561B1 (en) 1999-11-11 2001-09-11 Lindauer Dornier Gesellschaft Mbh Method and apparatus for monitoring the removal of a catch selvage from a loom

Also Published As

Publication number Publication date
BE1008376A3 (nl) 1996-04-02
US5560400A (en) 1996-10-01

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