EP0307679B1 - Support pour bobine - Google Patents

Support pour bobine Download PDF

Info

Publication number
EP0307679B1
EP0307679B1 EP88113865A EP88113865A EP0307679B1 EP 0307679 B1 EP0307679 B1 EP 0307679B1 EP 88113865 A EP88113865 A EP 88113865A EP 88113865 A EP88113865 A EP 88113865A EP 0307679 B1 EP0307679 B1 EP 0307679B1
Authority
EP
European Patent Office
Prior art keywords
web roll
winding
bearing
winding roller
winding roll
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
EP88113865A
Other languages
German (de)
English (en)
Other versions
EP0307679A1 (fr
Inventor
Ludger Nobbe
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Priority to AT88113865T priority Critical patent/ATE72553T1/de
Publication of EP0307679A1 publication Critical patent/EP0307679A1/fr
Application granted granted Critical
Publication of EP0307679B1 publication Critical patent/EP0307679B1/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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle

Definitions

  • the invention relates to a winding roller bearing, consisting of two support arms attached to a machine frame with upwardly open bearing shells, which have bearing surfaces in the form of approximately centrally divided hollow cylinders, with a device that slows down the rolling rotational movement of the winding roller.
  • the braking device consists of a belt attached at one end to the machine frame, which is placed over part of the circumference of the winding roller in such a way that the other end hangs freely over it, with a weight attached to this free end .
  • a more complicated unwinding roller brake is known with a brake band that wraps around the winding reel tele, which is connected instead of a weight with a traction device that tensions the brake band during operation with variable traction.
  • the braking force acting on the winding roll can be set such that it remains essentially constant even when the winding roll diameter decreases.
  • the known winding roller braking devices may work satisfactorily, as long as the winding roller with continuous rotation is handled.
  • a similarly discontinuous mode of operation results if material web lengths are drawn off at intervals from the winding roll to fill up a material web storage device, from which the material web is then removed in time with the processing. If a winding roll accelerated in cycles or in short successive intervals is braked by a brake band acting on its circumference, the outer layers of the winding roll can shift relative to one another, particularly in the case of smooth web material. As a result of this shifting or sliding, especially of layers that have become loose, they can migrate laterally, so that there is an inclined run-in of the web into the machine, which can lead to considerable wrinkling. Often an inclined web can no longer be processed, so that malfunctions can occur.
  • the object of the invention is therefore to provide a winding roller bearing of the type mentioned, which enables simple and quick change of winding rollers and with a simply constructed winding roller brake is provided, which brakes the winding roller shaft with weight-proportional braking force.
  • this object is achieved in a winding roller bearing of the generic type in that the bearing surface consists of a layer of a polyurethane elastomer consisting of a combination of ethylene glycol adipic acid polyester with naphthalene-1,5-diisocyanate.
  • Polyurethane elastomers have good wear properties and high coefficients of friction, which are fundamental for solving the task.
  • a polyurethane elastomer that can be used according to the invention is, for example, the polyurethane elastomer commercially available under the trademark Vulkollan, which has a relatively high coefficient of friction, so that the shaft, which is mounted on a bearing surface made of Vulkollan, is braked.
  • the winding roll mounted in the bearing according to the invention is braked the more the larger its winding diameter. This corresponds to the requirements because a larger braking force must be applied to brake a winding roll with a larger diameter than to brake a winding roll with a smaller diameter.
  • the winding roller bearing according to the invention thus also very simply creates a winding roller brake acting on the winding shaft, the braking force of which is proportional to the roller diameter.
  • a material of high abrasion resistance with a high coefficient of friction is to be used for the bearing surfaces.
  • the machine frame 1 of a machine for producing sacks or bags from tubular film web made of thermoplastic material pulled off a winding roll is provided with two cantilevered arms 2 parallel to one another. These arms 2 have recesses in the region of their ends. In the area of these recesses, bearings 3 are screwed to the arms 2, which are provided with semicircular recesses. These recesses are designed with strips 4 made of Vulkollan, on which the actual winding shaft 5 rests. The winding roller 7 is clamped to the winding shaft 5 via mandrels 6. A web 8 is discontinuously drawn off from this winding roll.
  • the strip 4 forming the bearing surface can also consist of another material, preferably polyurethane, instead of Vulkollan. Any material is suitable as a bearing material that, like Vulkollan, has a high coefficient of friction with high abrasion resistance.

Landscapes

  • Winding Of Webs (AREA)
  • Unwinding Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Unwinding Of Filamentary Materials (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (1)

  1. Support pour bobine constitué de deux bras porteurs (2) fixés sur un bâti de machine (1), lesquels comportent des coquilles support (3) ouvertes vers le haut, qui présentent des surfaces de contact ayant la forme de cylindres creux coupés sensiblement en leur milieu, comportant un dispositif de freinage du mouvement de rotation de la bobine (7) lors de son déroulement,
    caractérisé en ce que
    les surfaces portantes sont constituées par une couche (4) d'élastomère de polyuréthane, provenant d'une combinaison d'éthylène-glycol, d'acide adipique et de polyester comportant du naphtalène-1,5-diisocyanate.
EP88113865A 1987-09-14 1988-08-25 Support pour bobine Expired - Lifetime EP0307679B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88113865T ATE72553T1 (de) 1987-09-14 1988-08-25 Wickelrollenlagerung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8712432U DE8712432U1 (fr) 1987-09-14 1987-09-14
DE8712432U 1987-09-14

Publications (2)

Publication Number Publication Date
EP0307679A1 EP0307679A1 (fr) 1989-03-22
EP0307679B1 true EP0307679B1 (fr) 1992-02-12

Family

ID=6812070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88113865A Expired - Lifetime EP0307679B1 (fr) 1987-09-14 1988-08-25 Support pour bobine

Country Status (3)

Country Link
EP (1) EP0307679B1 (fr)
AT (1) ATE72553T1 (fr)
DE (2) DE8712432U1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103979331A (zh) * 2014-05-29 2014-08-13 昆山宝锦激光拼焊有限公司 一种防锈纸展料架
CN109928243B (zh) * 2019-04-24 2023-12-08 浙江精力玛智能机械有限公司 一种拉布机的进布结构
CN111807121A (zh) * 2020-07-31 2020-10-23 杭州丙甲科技有限公司 用于将包装片材展开成立体状包装材料的装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335968C1 (de) * 1983-10-04 1985-06-05 Kunz Maschinen- und Apparatebau GmbH, 7850 Lörrach Lagervorrichtung fuer einen auf- und ablaufenden Wickel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU541626B2 (en) * 1980-08-15 1985-01-17 David & Sue Baker Pty. Ltd. Unwinding fencing material
DE8509152U1 (de) * 1985-03-27 1985-07-18 Vereinigte Aluminium-Werke AG, 1000 Berlin und 5300 Bonn Tragelement zum Aufhängen von Folienrollen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335968C1 (de) * 1983-10-04 1985-06-05 Kunz Maschinen- und Apparatebau GmbH, 7850 Lörrach Lagervorrichtung fuer einen auf- und ablaufenden Wickel

Also Published As

Publication number Publication date
DE3868372D1 (de) 1992-03-26
ATE72553T1 (de) 1992-02-15
DE8712432U1 (fr) 1987-11-12
EP0307679A1 (fr) 1989-03-22

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