EP0294408B1 - Dispositif d'ensouplage croise - Google Patents

Dispositif d'ensouplage croise Download PDF

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Publication number
EP0294408B1
EP0294408B1 EP87907934A EP87907934A EP0294408B1 EP 0294408 B1 EP0294408 B1 EP 0294408B1 EP 87907934 A EP87907934 A EP 87907934A EP 87907934 A EP87907934 A EP 87907934A EP 0294408 B1 EP0294408 B1 EP 0294408B1
Authority
EP
European Patent Office
Prior art keywords
stroke
traversing
winding
mirror
speed
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
EP87907934A
Other languages
German (de)
English (en)
Other versions
EP0294408A1 (fr
Inventor
Heinz Schippers
Erich Lenk
Walter Runkel
Klaus Bartkowiak
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.)
Oerlikon Barmag AG
Original Assignee
Barmag 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 Barmag AG filed Critical Barmag AG
Publication of EP0294408A1 publication Critical patent/EP0294408A1/fr
Application granted granted Critical
Publication of EP0294408B1 publication Critical patent/EP0294408B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2821—Traversing devices driven by belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/38—Arrangements for preventing ribbon winding ; Arrangements for preventing irregular edge forming, e.g. edge raising or yarn falling from the edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/38—Arrangements for preventing ribbon winding ; Arrangements for preventing irregular edge forming, e.g. edge raising or yarn falling from the edge
    • B65H54/385—Preventing edge raising, e.g. creeping arrangements
    • B65H54/386—Preventing edge raising, e.g. creeping arrangements with energy storing means for recovering the kinetic energy at the end of the traversing stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • the method according to the preamble of claim 1 is referred to as "wobble".
  • This method has the disadvantage that the winding speed, which is the geometric sum of the circumferential speed of the spool and the traversing speed, is changed by the mirror disturbance.
  • EP 27 173 proposes that the mirror disturbance and breathing take place synchronously.
  • the change in the traversing speed for the purpose of mirror interference is largely compensated for by the change in the traversing speed for the purpose of breathing.
  • the latter method has been further developed to perfection by EP 85109799, so that uniformly cylindrical bobbins can be built up, from which the thread can be drawn off without error at speeds of more than 1000 m / min.
  • the invention has for its object to provide a method with which in the manufacture of packages with high winding and traversing speeds mirror disturbances can be achieved by changing the stroke length or the traversing speed without an unacceptable change in thread tension. It is solved in a method according to the preamble of claim 1 by the claim character.
  • the invention according to the characterizing part of claim 1 creates a method in which there is no change in the traversing speed due to mirror interference and breathing. Mirror disorder and breathing are mutually dependent. Therefore, measures for synchronization, which require considerable mechanical and electronic effort in the known methods and devices, are not necessary.
  • the method according to claim 1 has the advantage that the thread can be wound with constant and optimized thread tension without the formation of mirrors. Any breathing method can be used, for example breathing according to EP-A 87 101028 (Bag. 1509).
  • a traversing device suitable for carrying out the method according to the invention is explained in more detail with reference to the attached drawing.
  • FIG. 1 and 2 are schematically shown winding machines with several winding positions.
  • a plurality of threads 8 are fed from a delivery mechanism 47 and a thread guide 49 to their respective winding position.
  • the endless belt 1 extends over three winding positions.
  • the pulley 2 is driven by the motor 55.
  • a carriage 5 with a traversing thread guide 7 are movably guided for each winding position.
  • the gripper drive is switched by the stops 23.L and 23.R, which are each arranged on supports and can be driven by a threaded spindle 29.
  • the threaded spindles are driven by motor 64 and a countershaft 65 and gear pairs 56.
  • the thread is wound on the spool 57, which is freely rotatable.
  • the coil is driven on its periphery by drive rollers 58.
  • the drive rollers 58 of the three winding stations are driven together by motor 59. Otherwise, one of the exemplary embodiments of this invention can serve as the traversing device.
  • the winding machine can essentially correspond to that of FIG. 1.
  • the traversing devices are not driven by one belt, but by two endless belts 1.1 and 1.2.
  • Each of these belts is driven by a motor 55.1 and 55.2.
  • Frequency generators 60, 61 can drive the motors at different speeds and the belts at different speeds.
  • the carriages 5, which are assigned to each winding point, are each driven by one of the belt spaces, the two belt spaces intended for driving having opposite directions of movement 4.1 and 4.2.
  • the fixed stops 23.L and 23.R are only shown in dashed lines as stop curves. For the rest, reference can be made to the description of FIG. 1.
  • a circumferential belt 1 is stretched between two rollers 2 and 3 and rotates in direction 4.
  • a carriage 5 is on straight guides 6 between the two parallel belt spaces straight and has a traversing thread guide 7, in which the thread 8, which runs perpendicular to the image plane, is guided.
  • the entrainment and reversing mechanism is attached to the carriage between the two belt spaces.
  • a fixed gripping jaw 9.L is attached to the carriage 5 outside and closely adjacent to the belt piece running to the left.
  • the toggle spring 11.L is clamped on one side on the bracket 10.L.
  • the Bock 10.L is mounted on the sled in the area of the belt run to the right.
  • the movable gripper 12.L is attached to the free end of the toggle spring 11.L.
  • the toggle spring 11.L is shaped with a curve. It is so long that the movable gripper 12.L does not touch the belt drum in the rest position of the toggle spring 11.L.
  • the same elements 9.R to 12.R are provided for clockwise rotation, but the sides are reversed.
  • the eccentric disc 14 On the central pin 13, which is located exactly in the middle between the driving elements 9 to 12 cited above, two disks are freely rotatable about the pivot axis 13.
  • the eccentric disc 14 has a smaller diameter over an angle of almost 180 ° and a larger diameter over a further angle of almost 180 °. Both circumferential areas are constantly connected. These transitions from a smaller to a larger diameter form the two eccentrics of the eccentric disc, which cause the toggle springs 11.L and 11.R to stretch.
  • a drive pin 15 sits on the eccentric disk 14.
  • the drive pin 15 projects through a circular elongated hole 16 which is introduced into the second so-called switching disk 17.
  • the elongated hole 16 extends over only a short circumferential area.
  • the eccentric disc 14 is clamped by tension spring 18.
  • the articulation point 19 of the tension spring 18 is attached to the slide in a plane that passes through the pivot pin 13 and is perpendicular to the belt space 1. From pivot point 19 on Viewed from the slide, the articulation point 15 lies on the eccentric disc beyond the pivot point 13 of the eccentric disc. Therefore, the cedar 18 passes through its dead center when the eccentric disc 14 is rotated.
  • the shift lever 17 is clamped by cedar 20.
  • the cedar 20 is in turn clamped between the already mentioned clamping point 19 on the slide and on the other hand at a clamping point 21 of the shift lever, which is also beyond the pivot point 13 on a larger diameter than the clamping point of the spring 18 on the eccentric disc 14.
  • the cedar 20 thus also passes over its dead position when the switching disk is pivoted.
  • the switching disc 17 has a switching lug 22.
  • the switching lug 22 interacts with stops 23.R and 23.L when the right and left end positions of the slide 5 are reached. Stops 24.L and 24.R are used to stop and guide the movable grippers 12.L and 12.R.
  • the belt 1 can have a great length and that between the rollers 2 and 3 a larger number of traversing devices, i.e. Stops 23.L and 23.R and carriage 5 can be arranged.
  • the straight guides 6 can extend over only one winding point or also over a large number of winding positions.
  • the traversing stroke length can be adjusted in the direction of the arrow by changing the position of at least one of the two stops 23.L, 23.R.
  • Permanent magnets 63.L and 63.R are attached to the slide on both sides. These interact with fixed magnets 62.L and 62.R, which are attached in the stroke reversing areas.
  • stops 23.L and 23.R are mounted on a spindle 29.L and 29.R and secured against rotation.
  • the spindles 29 are threaded. They are driven by the stepper motors 64.L and 64.R.
  • the stepper motors are controlled by storage and control unit 66, both directions of rotation being possible.
  • the stepper motors 64.L and 64.R can be driven synchronously or individually so that the stops 23.L and 23.R individually or preferably both move synchronously towards the center of the stroke and back again. This movement can be controlled according to a predetermined program. Breathing follows. Suitable laws for control result e.g. from EP-A 85109799, but also from the as yet unpublished German application 36 02 853 (Bag. 1509). Reference is made to these pre-registrations and the subsequent registrations registered with their priority. With the breathing laws described there, a cylindrical cheese can be constructed with a precisely cylindrical circumference.
  • the abscissa is the time axis.
  • the solid line shows the development of the traversing movement of the traversing thread guide over the total stroke H on the time axis.
  • the dashed line shows the development of the traversing movement over the smallest stroke h on the time axis.
  • a back and forth movement is called a double stroke.
  • the number of double strokes per unit of time is referred to as the number of double strokes or _ in this application _ as the traversing frequency.
  • the time period T or t for a back and forth movement is referred to as a double stroke time.
  • the traversing frequency 1 / T with a large stroke H is lower than the traversing frequency 1 / t with a small traversing stroke h.
  • the diagram shows that the traversing speed dH / dT for a large stroke H is equal to the traversing speed dh / dt for a small stroke h.
  • Low-order mirrors occur when the winding ratio deviates from the next integer winding ratio by a large fraction with an integer denominator (in particular 1/2, 1/3, 1/4).
  • an integer denominator in particular 1/2, 1/3, 1/4. Due to the breathing movement according to this invention, the following alternatives to mirror disturbance or mirror avoidance are conceivable: By permanently shortening the traversing stroke, it is possible to avoid critical, mirror-prone winding conditions occurring during the winding travel. Alternatively, you can quickly run through critical, mirror-prone winding conditions. And another alternative is that one the winding ratio varies periodically or aperiodically in the manner of a wobble and avoids mirror symptoms in that the winding conditions, which are at risk of being mirrored, are passed through only briefly.
  • the diagram according to FIG. 5 shows on the one hand the time course of the traversing movement and on the other hand the time course of the traversing speed. Common to both diagrams is the abscissa, the time axis. The ordinate of the lower part of the diagram represents the stroke H or h. It should be noted that the slope of the curve shown represents the traversing speed. However, the changes in the traversing speed that result from the upper part of the diagram are not visible because of their relatively small size and because of the distorted representation of the lower part of the diagram.
  • the traversing speed (with the dimension m / sec.) Remains constant during the cycle times with a shorter stroke. A wobble takes place during the rest periods TR. The traversing speed is changed periodically or non-periodically, but in any case repeatedly, with a change of up to 10% of the mean value.
  • Such a wobble for the purpose of mirror disturbance, i.e. to avoid the mirror symptoms is known per se.
  • a mirror fault _ as already described _ is not necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Winding Filamentary Materials (AREA)
  • Advancing Webs (AREA)

Abstract

Les dispositifs d'ensouplage croisé connus possèdent une courroie permettant le va-et-vient d'un support (5) avec un guide-fils (7). Le support (5) présente à cet effet des systèmes de pinces à commande hydraulique ou pneumatique. Pour réaliser des bobines croisées, la commande des navettes comporte une ressort (18) qui, lors du mouvement des navettes (10.L, 10.R), passe par sa position neutre. Ladite commande est actionnée, dans les régions d'inversion de course, par des butées fixes (23.L, 23.R). Ces dernières peuvent être déplaçables dans le sens de course. Cela provoque une aspiration et un mouvement ondulatoire. La courroie (1) peut s'étendre sur plusieurs points de bobinage, tandis qu'à chaque point de bobinage sont adjoints un support (5) et un guide-fils (7).

Claims (2)

1. Procédé de prévention du rubanage lors de l'enroulement d'un fil pour former une bobine croisée avec un angle de dépôt de plus de 2° par variation temporaire de la fréquence de va-et-vient, caractérisé par le fait que la variation de la fréquence de va-et-vient s'effectue par raccourcissement de la course, la vitesse de va-et-vient restant la même.
2. Procédé selon la revendication 1, caractérisé par le fait que, durant les intervalles de temps auxquels le raccourcissement de course n'a pas lieu, la prévention du rubanage s'effectue par variation de la vitesse de va-et-vient.
EP87907934A 1986-12-08 1987-12-08 Dispositif d'ensouplage croise Expired - Lifetime EP0294408B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3641847 1986-12-08
DE3641847 1986-12-08
DE3643229 1986-12-18
DE3643229 1986-12-18
DE3726281 1987-08-07
DE3726281 1987-08-07

Publications (2)

Publication Number Publication Date
EP0294408A1 EP0294408A1 (fr) 1988-12-14
EP0294408B1 true EP0294408B1 (fr) 1991-05-02

Family

ID=27195207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87907934A Expired - Lifetime EP0294408B1 (fr) 1986-12-08 1987-12-08 Dispositif d'ensouplage croise

Country Status (5)

Country Link
US (1) US4911370A (fr)
EP (1) EP0294408B1 (fr)
JP (1) JPH01501703A (fr)
KR (2) KR880007344A (fr)
WO (1) WO1988004273A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3819675A1 (de) * 1988-06-09 1989-12-14 Barmag Barmer Maschf Changiereinrichtung
DE3912101A1 (de) * 1988-04-22 1989-11-09 Barmag Barmer Maschf Changiereinrichtung
TW258761B (fr) * 1993-10-19 1995-10-01 Barmag Barmer Maschf
AU6270698A (en) 1997-02-05 1998-08-25 Plant Engineering Consultants, Inc. Precision winding method and apparatus
TW368490B (en) * 1997-02-27 1999-09-01 Barmag Barmer Maschf Method of and apparatus for winding a continuously advancing textile yarn into a core supported package by controlling the acceleration and/or deceleration of the yarn guide to modify the yarn deposit in the package edges
AU2003298731A1 (en) 2002-11-26 2004-06-18 Digimarc Id Systems Systems and methods for managing and detecting fraud in image databases used with identification documents
DE10306232A1 (de) * 2003-02-14 2004-08-26 Rieter Ingolstadt Spinnereimaschinenbau Ag Antriebsvorrichtung für einen Fadenführer zum changierenden Verlegen eines Fadens vor einer Spulvorrichtung
CA2522551C (fr) 2003-04-16 2009-12-22 Digimarc Corporation Stockage de donnees en trois dimensions
EP1681259A3 (fr) * 2005-01-15 2007-05-09 Rieter Ingolstadt Spinnereimaschinenbau AG Dispositif d'entraînement unidirectionel pour des dispositifs de va-et-vient de fil

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190300612A (en) * 1903-01-09 1903-11-12 Henry Birkby Arundel Improvements in connection with Yarn or Thread Winding, Doubling or Gassing Machines or the like.
US2296421A (en) * 1940-05-01 1942-09-22 Foster Machine Co Winding apparatus
US2285439A (en) * 1940-12-12 1942-06-09 Universal Winding Co Winding machine
US2415233A (en) * 1942-07-02 1947-02-04 Us Slicing Machine Co Feed mechanism
US2360909A (en) * 1942-11-23 1944-10-24 Universal Winding Co Winding machine
US2462060A (en) * 1945-09-10 1949-02-15 Int Standard Electric Corp Transmission mechanism
US2764363A (en) * 1950-09-13 1956-09-25 Stammwitz Eugene Traverse mechanism for spinning, twisting and like frames
US2911835A (en) * 1956-07-05 1959-11-10 Deering Milliken Res Corp Traversing arrangement
US3029649A (en) * 1959-12-15 1962-04-17 Steyh Joseph Traversing mechanism
NL260157A (fr) * 1960-01-21
NL260158A (fr) * 1960-01-21
NL260210A (fr) * 1960-01-21
US3093344A (en) * 1960-01-21 1963-06-11 Monsanto Chemicals Traversing device
CH433892A (de) * 1964-10-30 1967-04-15 Max Wullimann Fa Antriebsvorrichtung zur Erzeugung einer hin- und hergehenden Bewegung
DE1916580C3 (de) * 1969-04-01 1974-02-28 Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal Changier vorrichtung an Aufwickelvorrichtungen
US3589631A (en) * 1969-10-13 1971-06-29 Du Pont A yarn winding process
US3697008A (en) * 1969-12-29 1972-10-10 Owens Corning Fiberglass Corp Apparatus for packaging linear material
US3727855A (en) * 1971-04-05 1973-04-17 Leesona Corp Winding method and apparatus
CH523840A (de) * 1971-07-07 1972-06-15 Schweiter Ag Maschf Fadenführvorrichtung zur Erzeugung von Kreuzspulen auf Spulmaschinen
CH532840A (de) * 1971-08-11 1973-01-15 Inst Yadernoi Fiziki Sibirskog Magnetisch gesteuerte Gasentladungsröhre
US4085621A (en) * 1975-08-04 1978-04-25 Repco Research Proprietary Limited Traversing mechanism
JPS54147237A (en) * 1978-05-09 1979-11-17 Teijin Ltd Spiral yarn body
DE2855616A1 (de) * 1978-12-22 1980-06-26 Barmag Barmer Maschf Verfahren zum aufspulen von faeden
DE2937601A1 (de) * 1979-09-18 1981-04-02 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Verfahren zum aufwickeln von faeden
US4504021A (en) * 1982-03-20 1985-03-12 Barmag Barmer Maschinenfabrik Ag Ribbon free wound yarn package and method and apparatus for producing the same
DE3562216D1 (en) * 1984-08-18 1988-05-26 Barmag Barmer Maschf Cylindrical cross-wound bobbin

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM Technical Disclosure Bulletin, Band 16, Nr. 1, Juni 1973, IBM Corporation, (US) G. Beaujeu: "Reciprocating mechanism", Seiten 239-240, siehe das ganze Dokument *

Also Published As

Publication number Publication date
KR890700107A (ko) 1989-03-02
WO1988004273A1 (fr) 1988-06-16
JPH01501703A (ja) 1989-06-15
KR970000008B1 (ko) 1997-01-04
US4911370A (en) 1990-03-27
KR880007344A (ko) 1988-08-26
EP0294408A1 (fr) 1988-12-14

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