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EP0554666B1 - Dispositif pour former une réserve de fil - Google Patents

Dispositif pour former une réserve de fil Download PDF

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Publication number
EP0554666B1
EP0554666B1 EP93100243A EP93100243A EP0554666B1 EP 0554666 B1 EP0554666 B1 EP 0554666B1 EP 93100243 A EP93100243 A EP 93100243A EP 93100243 A EP93100243 A EP 93100243A EP 0554666 B1 EP0554666 B1 EP 0554666B1
Authority
EP
European Patent Office
Prior art keywords
thread
bobbin
wound
guide element
thread guide
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
EP93100243A
Other languages
German (de)
English (en)
Other versions
EP0554666A1 (fr
Inventor
Hans Raasch
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 Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
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 W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
Publication of EP0554666A1 publication Critical patent/EP0554666A1/fr
Application granted granted Critical
Publication of EP0554666B1 publication Critical patent/EP0554666B1/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
    • B65H54/34—Traversing devices; Package-shaping arrangements for laying subsidiary winding, e.g. transfer tails
    • 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 device for forming a thread reserve on cross-wound bobbins at the winding stations of a textile machine producing cross-wound bobbins, with a plurality of work stations and a mobile service device serving the work stations, which is set up for changing take-up bobbins, and a drive device for the cross-wound bobbins in the changing position and has a thread suction device for locating, sucking in and pulling off the thread end that has run onto the surface of the cross-wound bobbin, this thread end being wound on the sleeve end to form a thread reserve with the aid of a thread guide element on the bobbin frame that can be moved toward and away from the cross-wound bobbin.
  • a thread guide element which is mounted on the bobbin frame and can be moved towards and away from the cross-wound bobbin.
  • the thread guide element is pivotable about a pivot point on the bobbin frame and can for example, be held in the rest position under the influence of a spring. If an end reserve is to be wound, a switching lever presses the thread guide element with its thread guide contour into the vicinity of the gusset, which is formed by the yarn package and the bobbin tube.
  • the thread running on the end face of the cross-wound bobbin to the thread suction device is gripped by the thread guide contour and winds on the sleeve. As long as the thread between the sleeve and the thread suction device is still taut due to the suction flow present, the thread also winds in fixed turns on the sleeve.
  • the thread guide contour can still guide the thread end to the sleeve, the remaining turns, especially the last turn, remain slack due to the lack of tension on the thread.
  • the last thread windings on the sleeve can easily fall off or be pulled off.
  • the thread end can loosen further and get caught on the means of transport. The result is that towing threads are created, the reserve is withdrawn completely or the package is caught and the transport system is blocked.
  • the object of the invention is therefore to avoid the disadvantages indicated and to form a thread reserve which is optimally secured against loosening.
  • this object is achieved in that the thread guide element has a sector of at least 90 degrees in the circumferential direction of the sleeve, that the thread guide element on its thread guide surface, which can be placed on the end face of the package, has a thread catch notch directly adjacent to the end face of the package and the existence Actuating element for actuating the thread guide element is provided.
  • the thread guide device is attached to the bobbin frame in order to guide the thread to be wound up close to the end face of the package. While the thread guiding device rests on the bobbin frame in normal winding operation, it is pivoted against the end face of the bobbin for winding the thread reserve in such a way that it comes to rest there.
  • the thread guide element has a thread catch notch where the thread runs onto the sleeve during winding, with which the thread is guided to the end face of the bobbin during winding. During the formation of the thread reserve, the thread is first pulled out of the suction nozzle under tension and wound in several windings on the sleeve.
  • the thread is guided by the thread guiding element with its thread guiding surface in such a way that it is placed on the end of the thread spool on the sleeve. During this winding process, the thread gets into the thread catch notch. If the thread end is without tension after leaving the suction nozzle and is therefore no longer held taut, it will continue to be guided through the notch. This will completely wind it up.
  • the thread end is ironed in by the contact of the thread guide surface on the end face of the thread guide element on the end face of the yarn package and is therefore well secured for transport due to the friction of the thread on the end face.
  • the thread guide element is adapted to the respective contour of the end face of the bobbin, against which it can be brought into contact. This adjustment is particularly important for conical cross-wound bobbins. Since their end faces are generally not flat, it is advantageous if the thread guide surface of the thread guide element is adapted to the end face of the bobbin, so that no space or gap arises between the thread guide element and the end face of the bobbin which the thread could move freely and without guidance.
  • the thread guide element has a convex or a concave shaped contour.
  • the thread catch notch is arranged on the thread guide element where the thread guide element comes to rest in the area of the sleeve.
  • a thread catch notch arranged in this way guides the thread securely into the area of the sleeve, so that it can be wound on it to form the thread reserve and the thread end, if possible, comes to rest in the area of the sleeve on the end face of the package. This makes it easier to find when further processing the package.
  • FIG. 1 shows a textile machine 1 producing cross-wound bobbins, which has a multiplicity of work stations 2 at which cross-wound bobbins 3 are wound. Only one of the large number of workplaces is shown in a side view. Only the features contributing to the understanding of the invention are shown and explained in more detail.
  • the package has reached its intended amount of yarn.
  • the cross-wound bobbin 3 which is still held rotatably in the bobbin frame 4, has been lifted off its bobbin drive 5.
  • the bobbin drive 5 consists of a winding roller which drives the cross-wound bobbin 3 by means of friction and which can be driven by a shaft 6 guided along the machine.
  • the cross-wound bobbin 3 is lifted off the winding roller 5, for example, by a pneumatic lifting device 7 which engages the bobbin frame 4.
  • the pneumatic lifting device 7 When the pneumatic lifting device 7 is actuated, the bobbin frame pivots about the pivot axis 8.
  • the cross-wound bobbin moves on a circular path 9 and is lifted off the winding roller 5. In this state, the feeding of the yarn 10 is interrupted by a yarn delivery point, not shown here, for example a spinning point.
  • a bobbin changing carriage 11 has been positioned at the winding unit 2 as a mobile service facility. It has a package changer and also carries a tube magazine 12 with a supply of empty tubes 13.
  • the bobbin changing carriage is supported by guide rollers 14 and 15 on rails 16 and 17 on the machine.
  • a thread suction device On the bobbin changing carriage 11 there is a thread suction device, designated overall by 18. It consists of a suction nozzle 19, as is known for example from DE-OS 36 02 574. This suction nozzle is used to suck in and pull off the thread end that has run onto the surface of the package.
  • the suction nozzle 19 is pivotable about the pivot point 20, so that its suction opening 21 can be moved on a circular path 22 to the peripheral surface of the package 3.
  • the suction opening 21 is already directed onto the peripheral surface of the cheese 3 and has sucked in the thread end 23 that has run there.
  • the thread end 23 is being wound up to a thread reserve on the sleeve on the end face of the package.
  • the cheese 3 is driven by an auxiliary drive 24.
  • the auxiliary drive 24 rotates the cross-wound bobbin 3 in the direction of the arrow 26, the direction of rotation in which the thread is wound during winding, by means of a friction wheel which bears against the circumferential surface of the bobbin and rotates in the direction of arrow 25.
  • the auxiliary drive can be delivered by means of a holder 27 about the pivot point 28 on a circular path 29 of the cheese 3.
  • a thread guide element 30 of the embodiment according to the invention lies against the end face of the package 3 and guides the thread 23, which extends from the suction opening 21 over the end face 31 of the package 3.
  • the thread guide element 30 is pressed against the end face 31 of the cheese 3 by an actuating element 32.
  • the actuating element 32 is pivotally mounted in the pivot point 33 on the bobbin changing carriage 11 and becomes the Operation pivoted out of the rest position 32 'according to the movement path 34 in the direction against the thread guide element.
  • the fully wound cross-wound bobbin is lifted out of the bobbin frame in a known manner, as described for example in DE-OS 36 02 574, and placed on a conveyor belt 35 for removal.
  • An empty sleeve 13 is then removed from the sleeve magazine 12 by means of a sleeve feeder 36.
  • the sleeve feeder 36 grips an empty sleeve 13 and, rotating along the circular arc 38 around the pivot point 39, brings it into the open coil frame 4.
  • the sleeve is clamped in the coil frame and the sleeve feeder 36 swings back into its starting position.
  • Fig. 2 shows the part of the bobbin frame 4 on which the thread guide element 30 is pivotally mounted.
  • the cheese 3 consists of the package 44 and the sleeve 45, one end of which protrudes from the end face 31 of the cheese 3. This end is held by a sleeve plate 46 which is rotatably mounted in a bearing 47 in the holder arm 40 of the coil frame 4.
  • the thread guide element 30 lies parallel to the holder arm 40 and thus parallel to the end face 31 of the cheese 4. It can be held in this position by a spring (not shown here) or by gravity.
  • An embodiment of the thread guide element can be seen from FIGS. 3 and 4.
  • the thread guide element has a flat contour and encompasses the sleeve on its circumference.
  • Thread guide element 30 sleeve 45 by 180 degrees, reaching around by 90 degrees in the area of the thread course, thus thus an embodiment with a quarter segment, is also conceivable.
  • the thread guide element 30 contains, in the area in which it comes to rest on the end face 31 in the area of the sleeve 45 of the package 3, a thread guide surface 48 which conforms to the end face 31 of the package.
  • the thread catch notch 49 is located where the thread guide surface 48 comes to rest on the end face of the package. This thread catch notch 49 is cut in such a way that it catches the thread 23 running from the sleeve 45 to the suction nozzle 21 and on the end face 31 of the package 3 brings to the plant.
  • this thread 23 is first wound up on the end of the sleeve 45 to form a thread reserve 50 before the thread end 23 emerging from the suction nozzle 21 is brought into contact with the end face 31 of the package 3 by means of the thread guide element 30. Since the thread end 23 drawn out of the suction opening 21 is no longer under tension, there is a risk that it will be flung loosely around the sleeve without a thread guide element.
  • the thread guide element grips the slack thread 23 with its thread catch notch 49, as can be seen in FIG. 2, and first causes a further winding on the sleeve and a subsequent ironing of the thread end with the help of the thread guide surface 48 onto the end face 31 of the package 3.
  • the thread guide element 30 with its thread guide surface 48 can be brought into contact with the end face 31 of the cheese 4, it has an angled tab 51 acting as a lever arm above the pivot point about the axis 43.
  • This tab 51 is perpendicular to the base body of the thread guide element angled. If the actuating element 32 acts on the tab 51, as shown in FIG. 2 by means of the dashed arrow, the thread guide element 30 becomes its own Rest position pivoted into position 30 'and comes with its thread guide surface 48 on the end face 31 of the package 3 to the plant.
  • the thread guide element can also be actuated by the pressure lever of the package changer.
  • FIG. 5 shows a cylindrical cheese, as is also shown in FIG. 2.
  • the thread guide surface 48 of the thread guide element 30, which is shown in accordance with the section shown in FIG. 3, has a course which is parallel to the end face 31 of the cheese in the contact surface.
  • FIG. 6 and 7 each show a conical cross-wound bobbin 53 and 54, respectively.
  • the end face 55 at the tip of the conical bobbin sleeve 56 is drawn in concavely, so that a correspondingly designed thread guide surface 48a of the thread guide element 30a comes to rest on the end face 55.
  • the contour of the thread guide surface 48a is modeled on the end face contour 55. If the thread guide element 30a is pressed with its thread guide surface 48a in the direction of arrow 57 against the cross-wound bobbin rotating in the winding direction 58, the free thread end 23a is gripped by the thread catching notch 49a and brought to bear against the end face 55 of the cross-wound bobbin 53 and fixed there.
  • a concave contour of the thread guide surface 48b of the thread guide element 30b comes to rest on this end face.
  • the thread guide surface 48 of the thread guide element 30b is optimally adapted to the contour of the end face 60 of the conical cheese 54. If the thread guide element 30b is moved in the direction of movement 61 towards the end face 60 of the cheese 54, which moves in the winding direction 62, the thread 23b is gripped by the thread catch notch 49b, directed against the end face 60 and brought there to fix it, due to the Friction sticks to the thread layers on the face.

Landscapes

  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)

Claims (3)

  1. Dispositif pour former une réserve de fil sur des bobines croisées (3, 53, 54) dans les têtes de bobinage d'une machine textile (1) qui fabrique des bobines croisées (3, 53, 54) et qui comprend une pluralité d'endroits de travail (2), ainsi qu'un dispositif auxiliaire mobile (11) qui dessert les endroits de travail, qui est conçu en vue de changer des bobines de renvidage et qui comporte un dispositif d'entraînement (24) des bobines croisées (3, 53, 54) situées dans une position de changement, ainsi qu'un dispositif d'aspiration du fil (18) destiné à rechercher, à aspirer et à retirer l'extrémité du fil renvidé sur la surface de la bobine croisée, cependant que cette extrémité de fil est enroulée sur l'extrémité de la douille de la bobine croisée pour former une réserve de fil à l'aide d'un élément de guidage du fil (30, 30a, 30b) qui se trouve sur l'étrier porte-bobine en pouvant être déplacé vers la bobine croisée et écarté de la bobine croisée, et qu'il est prévu un élément d'actionnement (32) pour actionner l'élément de guidage du fil (30, 30a, 30b), caractérisé par le fait que l'élément de guidage du fil (30, 30a, 30b) forme un secteur d'au moins 90° dans la direction de la périphérie de la douille (45, 56, 59), et par le fait que l'élément de guidage du fil (30, 30a, 30b) présente, sur sa surface de guidage du fil (48, 48a, 48b) qui peut être appliquée sur le côté frontal (31, 55, 60) de la bobine croisée, une entaille de retenue du fil (49, 49a, 49b) qui se trouve au voisinage immédiat du côté frontal (31, 55, 60) de la bobine croisée (3, 53, 54).
  2. Dispositif selon la revendication 1, caractérisé par le fait que l'élément de guidage du fil (30, 30a, 30b) est adapté à chaque fois au contour du côté frontal (31, 55, 60) de la bobine (3, 53, 54) sur lequel il peut être appliqué.
  3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que l'entaille de retenue du fil (49, 49a, 49b) est ménagée dans l'élément de guidage du fil (30, 30a 30b) à l'endroit où cet élément de guidage du fil vient s'appliquer dans la région de la douille (45, 56, 59).
EP93100243A 1992-02-01 1993-01-09 Dispositif pour former une réserve de fil Expired - Lifetime EP0554666B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4202962A DE4202962A1 (de) 1992-02-01 1992-02-01 Vorrichtung zum bilden einer fadenreserve
DE4202962 1992-02-01

Publications (2)

Publication Number Publication Date
EP0554666A1 EP0554666A1 (fr) 1993-08-11
EP0554666B1 true EP0554666B1 (fr) 1995-05-03

Family

ID=6450820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93100243A Expired - Lifetime EP0554666B1 (fr) 1992-02-01 1993-01-09 Dispositif pour former une réserve de fil

Country Status (3)

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US (1) US5362007A (fr)
EP (1) EP0554666B1 (fr)
DE (2) DE4202962A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4445269A1 (de) * 1994-12-19 1996-06-20 Schlafhorst & Co W Verfahren und Vorrichtung zum Festlegen des Fadenendes einer Fadenreserve
US5549229A (en) * 1995-02-06 1996-08-27 Chrysler Corporation Luggage rack
EP1021367A4 (fr) * 1997-08-22 2000-12-06 Corning Inc Procede et dispositif permettant d'enrouler une fibre sur une bobine
JP3698873B2 (ja) * 1997-10-03 2005-09-21 ナブテスコ株式会社 糸条パッケージの形成方法および形成装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL240039A (fr) * 1958-06-10
DE3336865A1 (de) * 1982-10-13 1984-04-19 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Aufspulvorrichtung
JPS60112569A (ja) * 1983-11-18 1985-06-19 Toray Ind Inc 糸条パツケ−ジのテ−ル形成方法
DE3602574C2 (de) * 1986-01-29 1997-06-12 Schlafhorst & Co W Kreuzspulen herstellende Maschine mit Vorrichtung zur Bildung einer Fadenendreserve auf einer fertig gewickelten Spule
JPH02209370A (ja) * 1989-02-08 1990-08-20 Murata Mach Ltd バンチ巻方法
JPH02239063A (ja) * 1989-03-13 1990-09-21 Murata Mach Ltd 自動ワインダー
JP2751499B2 (ja) * 1989-12-18 1998-05-18 村田機械株式会社 テールエンドの糸処理方法

Also Published As

Publication number Publication date
US5362007A (en) 1994-11-08
EP0554666A1 (fr) 1993-08-11
DE59300168D1 (de) 1995-06-08
DE4202962A1 (de) 1993-08-05

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