EP0586959B1 - Halterung für das Webblatt einer Nahtwebmaschine - Google Patents

Halterung für das Webblatt einer Nahtwebmaschine Download PDF

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Publication number
EP0586959B1
EP0586959B1 EP93113462A EP93113462A EP0586959B1 EP 0586959 B1 EP0586959 B1 EP 0586959B1 EP 93113462 A EP93113462 A EP 93113462A EP 93113462 A EP93113462 A EP 93113462A EP 0586959 B1 EP0586959 B1 EP 0586959B1
Authority
EP
European Patent Office
Prior art keywords
seam
reed
weaving machine
auxiliary weft
weft thread
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
EP93113462A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0586959A1 (de
Inventor
Hans Eugen Häcker
Edgar Hofstetter
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.)
Novatech GmbH Siebe und Technologie fuer Papier
Original Assignee
Novatech GmbH Siebe und Technologie fuer Papier
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 Novatech GmbH Siebe und Technologie fuer Papier filed Critical Novatech GmbH Siebe und Technologie fuer Papier
Publication of EP0586959A1 publication Critical patent/EP0586959A1/de
Application granted granted Critical
Publication of EP0586959B1 publication Critical patent/EP0586959B1/de
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
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/68—Reeds or beat-up combs not mounted on the slay

Definitions

  • the invention relates to a seam weaving machine for making a plastic fabric endless by means of a woven seam with a holder for the reed.
  • the reed has reeds for pushing auxiliary weft threads onto the selvedge, the reeds being pivotally mounted and, starting from the end of the fabric at which the auxiliary weft thread to be inserted in each case projects as a warp fringe, successively press against the auxiliary warp thread to be inserted.
  • the warp thread fringes are alternately inserted as auxiliary weft threads from the two fabric ends.
  • the warp thread fringes, ie the auxiliary weft threads, and the weft threads removed, ie the auxiliary warp threads, are generally monofilaments of 0.1 to 0.5 mm in diameter and the woven seam is produced after the fabric has been heat-set, so that the threads are already those of the respective Corrugation corresponding to the weave or have cranking.
  • the auxiliary warp threads and the auxiliary weft threads with their crankings must fit into one another as in the fabric, so that there is a positive connection.
  • the intermeshing of the auxiliary warp threads and auxiliary weft threads according to their cranking is achieved, inter alia, by the fact that the reed does not simultaneously push the auxiliary weft threads along the entire length, but rather that the auxiliary weft threads are pushed progressively through the seam weaving compartment from their point of exit from the end of the fabric.
  • a reed that enables such a gradual insertion of the auxiliary weft threads is described in DE-U-81 22 448.
  • the reed can be moved into a working position approximated to the selvedge.
  • the reeds, pivoted on one axis, are held back from the selvedge by a rubber strip. Starting from the end of the fabric, they are pressed one after the other against the elasticity of the rubber strip against the auxiliary weft thread by means of a deflecting member.
  • the deflecting member is a roller that can be moved on a guideway and for each insertion process the roller is shifted along the reed across the entire seam width.
  • the object of the invention is to accelerate the seam weaving process.
  • this object is achieved in that the holder of the reed of a reed of the type mentioned is designed in such a way that the reeds are offset or staggered against each other during the forward movement of the sley that the points at which the individual reed the to be added Touch the auxiliary weft, lie on a straight or slightly curved line, the distance from the selvedge of which increases continuously from the point at which the auxiliary weft emerges from the end of the fabric.
  • the reed is preferably constructed in such a way that the reeds have an opening at their lower end with which they are threaded on an axis. At their lower end, the reeds can also be widened into a foot.
  • the end of the foot facing away from the selvedge is supported on a rubber strip, while the end of the foot facing the selvedge sits on a base strip.
  • the base bar and the rubber bar are on opposite sides with respect arranged in the longitudinal direction of the reed so that they exert opposite torques on the reed.
  • the reeds are flexibly pushed forward, ie towards the selvedge, by the rubber strip.
  • the rigid position of the base bar determines the front position of the individual reeds.
  • the base bar can be tilted slightly towards one end of the tissue and towards the other end of the tissue by means of an adjusting device.
  • the tilt axis is parallel to the direction of the auxiliary warp threads and is expediently in the middle of the base bar.
  • the individual reeds move slightly towards or away from the selvedge.
  • the reed formed from the entirety of the reeds can be placed at an angle to the selvedge.
  • the slanted reed is moved from the sley to the selvedge.
  • the outermost reed on the side near the exit point of the warp fringe from the end of the fabric first touches the selvedge and pushes this warp thread fringe in as an auxiliary weft thread, which because of its fixed curl snaps properly between the auxiliary warp threads, which also contain a fixed curl.
  • the individual reeds press against the auxiliary weft thread until it has been pushed in along its entire length or up to the so-called piercing point at which it emerges from the fabric downwards or upwards.
  • the reeds that are already in contact with the auxiliary weft thread are increasingly pressed against the rubber strip during the further movement of the sley and lift off the base strip.
  • the successive insertion of the auxiliary weft takes place in a very short time, namely within the period of time that the sley needs to pass through the angle by which the last reed is offset from the first reed.
  • the base bar After inserting an auxiliary weft thread from one side of the fabric, the base bar is reversed and onto the other side tilted, so that the staggering of the reeds is reversed and an auxiliary weft thread can now be inserted that emerges from the other end of the fabric.
  • the selvedges generally behave in such a way that they have a concave shape at the start of a seam and then a convex shape as the seam process progresses.
  • the selvedge is therefore generally not straight. It is advantageous to change the shape of the reed, i.e. to adapt the arrangement of the reeds to the shape of the selvedge. There are several ways to do this:
  • the axis on which the reeds are threaded can be curved.
  • the reed feet are raised or lowered in accordance with the curvature of the axis relative to the rubber strip and the base strip and are thereby pivoted somewhat towards or away from the selvedge.
  • This pivoting movement is most pronounced in the central area of the reed and decreases towards the lateral end areas.
  • the axis on which the reeds are threaded can be deliberately bent by adjusting devices, for example hydraulic cylinders, which act on the axis via intermediate elements and are thereby adapted to the curvature of the selvedge.
  • adjusting devices for example hydraulic cylinders, which act on the axis via intermediate elements and are thereby adapted to the curvature of the selvedge.
  • the same effect is achieved as with the first option described above.
  • Another option is to bend the base bar and, if necessary, the rubber bar. This can e.g. in such a way that the base bar can be tilted as described above about a tilt axis running through its center and that adjusting devices are provided at each end of the base bar.
  • the fabric ends to be connected are fixed in a frame and the seam weaving machine is moved in this frame along the fabric ends.
  • the advancement of the seam weaving machine can be triggered by a reed which is extended downwards.
  • the selvedge moves in the direction of the sley and the reeds at the dead center of the sley are pressed against the rubber strip.
  • the elongated lower end of the reed is thus also pivoted more strongly and reaches a switch which sends a signal to the control for moving the seam weaving machine further.
  • a sley 1 which can be pivoted in the usual way by a sley drive cylinder 2.
  • the sley 1 has a cross member 3, from the side ends of which project upward bearing supports 4, in which an axis 5 is removably fastened.
  • Riet 6 are lined up on axis 5.
  • the reeds 6 have a bore 8 at the lower end with which they are threaded on the axis 5. By means of spacer rings 13 between them, they are kept at the distance which is predetermined by the thread count of the fabric.
  • the reeds 6 are foot-like at the lower end widened and they are supported with the end of the foot remote from the axis 5 on a rubber strip 9.
  • the opposite, near-axis end of the foot 7 rests on a base bar 10.
  • the arrangement is such that the rubber bar 9 and the base bar 10 exert opposite torques on the reed 6 and thereby determine their position. Due to the elastic force of the rubber strip 9, the individual reeds 6 are pressed against the base strip 10.
  • the rubber strip 9 is fixedly arranged on the cross member 3, while the base strip 10 can be tilted about a pivot point 12 which, in the exemplary embodiment shown, lies in the middle of the base strip 10, but which can also lie at one of the two ends.
  • the axis of rotation 12 lies horizontally in the direction of the movement of the sley 1.
  • the base bar 10 can be tilted by an electrical, mechanical, pneumatic and similar actuating device, for example by an actuating cylinder 11.
  • an electrical, mechanical, pneumatic and similar actuating device for example by an actuating cylinder 11.
  • the base bar 10 is shown with solid lines in its central position, in which all reeds have the same distance from the selvedge. With broken lines, the base bar 10 is shown in its one tilt position, in which the reeds 6 on the left in FIG. 2 are pivoted toward the viewer, that is to say toward the selvedge.
  • FIGS. 3 and 4 show in simplified form the position of the reed and the individual reed 6 when adding auxiliary weft threads.
  • the fabric ends 15, 16 consist of warp threads 17 and weft threads 18 and the fabric ends 15, 16 in the illustration of FIGS. 3 and 4 are already partially connected by a woven seam 19. In the part not yet connected, only the auxiliary warp threads 20 are shown, while the warp thread fringes emerging from the fabric end are omitted for the sake of clarity.
  • Fig. 3 shows the position of the reed for pushing in an auxiliary weft thread emerging from the upper fabric end 15 seen in FIG. 3.
  • the reeds 6 are therefore the smallest distance from the selvedge 21, so that the auxiliary weft thread is progressively pushed in from this fabric end 15 across the width of the woven seam 19.
  • This progressive pushing in takes place within a very short time, namely within the time span which the shutter drive cylinder 2 needs to travel through the distance X shown in FIG. 3.
  • the initially dominant reeds 6, that is, the reeds that first touch the selvedge are lifted off the base bar 10, the lifting movement being absorbed by the elasticity of the rubber bar 9.
  • the base bar 10 is reversed so that the auxiliary weft threads can be inserted alternately from the fabric sides 15 and 16. 4 shows the position of the reed 6 at the beginning of the entry of a warp thread fringe emerging from the fabric end 16 as an auxiliary weft thread.
  • the middle reed 23 is extended downwards and can operate a switch 22.
  • the fabric ends 15, 16 are, as usual, firmly clamped and the seam weaving machine is moved along the fabric ends 15, 16.
  • the shift of the seam weaving machine can be triggered by the switch 22.
  • the progress of the woven seam has the result that the reeds 6 strike earlier at the selvedge and are pressed harder against the rubber strip 9 and accordingly, as seen in FIG. 1, are pivoted further counterclockwise.
  • the extension of the middle reed 23 touches the switch 22, which gives a signal for the further movement of the seam weaving machine by one step.
  • FIG. 5 and 6 are a representation similar to that of FIG. 3, FIG. 5 showing the concave curvature of the woven seam at the beginning of the seam weaving process.
  • the selvedge 21 assumes a straight course and towards the end of the seam weaving process a convex course, as is shown in FIG. 6.
  • the distance of the reed from the selvedge from the fabric end 15 to the fabric end 16 increases uniformly, however, the reed 6 does not lie on a straight line, but on a path corresponding to the shape of the selvedge 21 curved line. It is thereby achieved that the individual reeds insert the auxiliary weft thread one after the other, in spite of the curved course of the selvedge 21 with approximately the same force.
  • FIGS. 7 and 8 show an embodiment similar to that of FIGS. 1 and 2 but with additional equipment for arranging the reed 6 on a curved line, the curvature being adjustable so that the shape of the reed changes with the course that changes during the sewing process the selvedge can be adjusted.
  • an additional cylinder 24 engages via a transverse arm 25 in the middle of the axis 5 and deflects it upwards or downwards, so that the axis 5 is curved upwards or downwards.
  • This cross arm 25 should have approximately the thickness of the spacer ring replaced there by the cross arm 25 at the point of application of the axis 5, so that the reed spacing is also maintained at this point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatment Of Fiber Materials (AREA)
  • External Artificial Organs (AREA)
  • Window Of Vehicle (AREA)
  • Woven Fabrics (AREA)
  • Sewing Machines And Sewing (AREA)
EP93113462A 1992-08-24 1993-08-24 Halterung für das Webblatt einer Nahtwebmaschine Expired - Lifetime EP0586959B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9211353U 1992-08-24
DE9211353U DE9211353U1 (de) 1992-08-24 1992-08-24 Halterung für das Webblatt einer Nahtwebmaschine

Publications (2)

Publication Number Publication Date
EP0586959A1 EP0586959A1 (de) 1994-03-16
EP0586959B1 true EP0586959B1 (de) 1997-05-28

Family

ID=6882987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93113462A Expired - Lifetime EP0586959B1 (de) 1992-08-24 1993-08-24 Halterung für das Webblatt einer Nahtwebmaschine

Country Status (7)

Country Link
US (1) US5421373A (fi)
EP (1) EP0586959B1 (fi)
JP (1) JPH06218163A (fi)
AT (1) ATE153713T1 (fi)
CA (1) CA2104616A1 (fi)
DE (2) DE9211353U1 (fi)
FI (1) FI102393B1 (fi)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5465762A (en) * 1994-06-10 1995-11-14 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Adjustable reed for weaving net-shaped tailored fabrics
US6014797A (en) * 1997-06-16 2000-01-18 Jwi Ltd. Method and apparatus for unravelling threads
DE20105091U1 (de) 2001-03-23 2002-09-05 Wangner Finckh GmbH & Co. KG, 72760 Reutlingen Spannzange für Nahtwebmaschinen
US7168456B1 (en) * 2005-10-26 2007-01-30 North Rocky Robot Technology, Inc. (Nortec) Method and apparatus to remove yarns from the fringes of an industrial textile
DE202005018856U1 (de) * 2005-12-01 2007-04-12 Wangner Gmbh & Co Kg Halterung für das Webblatt einer Nahtwebmaschine, um den Nahtschussfaden wahlweise mittels Schrägstellung der Riete oder verfahrbarer Rolle einzuwälzen
CN102587017A (zh) * 2012-02-24 2012-07-18 苏州赛力菲陶纤有限公司 一种波纹形筘
CN104313773B (zh) * 2014-10-09 2015-12-23 苏州大学 一种实验用可变形钢筘装置
EP3425095B1 (de) * 2017-07-07 2020-09-30 Groz-Beckert KG Webblatt und verfahren zu dessen herstellung

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE33040C (de) * A. KLOSE in Rorschach, Schweiz Bewegliche Verbindung zwischen Rahmen und Feder bei Eisenbahnfahrzeugen mit Lenkachsen
DE580631C (de) * 1933-07-14 Otto Buesser Webblatt mit wellenfoermig verlaufender Anschlaglinie
DD33040A (fi) *
US3622415A (en) * 1967-12-22 1971-11-23 Lindsay Wire Weaving Co Papermaking fabric seam and method of making the same
CH510155A (de) * 1970-07-13 1971-07-15 Sulzer Ag Weblade mit Riet
DE2151579A1 (de) * 1971-10-16 1973-04-19 Wieland Dietrich Dipl Phys Anschlagvorrichtung fuer webmaschinen
CH637709A5 (en) * 1979-02-01 1983-08-15 Rueti Ag Maschf Profiled reed dent for a reed and use of the reed dent for the reed of a jet-weaving machine
DE3025909C2 (de) * 1980-07-09 1983-07-14 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Verfahren und Vorrichtung zum Herstellen einer Webnaht zwischen zwei Gewebeenden
DE8122448U1 (de) * 1981-07-30 1983-01-13 Fa. F. Oberdorfer, 7920 Heidenheim Weblade
US4359501A (en) * 1981-10-28 1982-11-16 Albany International Corp. Hydrolysis resistant polyaryletherketone fabric
DE3674192D1 (de) * 1986-02-22 1990-10-18 Asten Group Automatische maschine zum verbinden zweier enden eines bandes.
CH680004A5 (en) * 1989-02-14 1992-05-29 Albert Moessinger Comb for progressive weft beating-in - is supported against distortion between its ends, eliminating need for comb tooth control
GB8929112D0 (en) * 1989-12-22 1990-02-28 Avon Ind Polymers Tensioning straps
DE9205834U1 (de) * 1992-05-04 1992-10-08 Chemnitzer Webmaschinenbau GmbH, O-9010 Chemnitz Webblatt mit parallel zueinander angeordneten Rietstäben

Also Published As

Publication number Publication date
FI102393B (fi) 1998-11-30
US5421373A (en) 1995-06-06
EP0586959A1 (de) 1994-03-16
FI933709A0 (fi) 1993-08-24
CA2104616A1 (en) 1994-02-25
JPH06218163A (ja) 1994-08-09
DE59306573D1 (de) 1997-07-03
FI102393B1 (fi) 1998-11-30
ATE153713T1 (de) 1997-06-15
DE9211353U1 (de) 1994-01-05
FI933709A (fi) 1994-02-25

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