EP0395043A2 - Dispositif d'enroulement - Google Patents

Dispositif d'enroulement Download PDF

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Publication number
EP0395043A2
EP0395043A2 EP90107909A EP90107909A EP0395043A2 EP 0395043 A2 EP0395043 A2 EP 0395043A2 EP 90107909 A EP90107909 A EP 90107909A EP 90107909 A EP90107909 A EP 90107909A EP 0395043 A2 EP0395043 A2 EP 0395043A2
Authority
EP
European Patent Office
Prior art keywords
winding
magnetic field
winding axis
parts
torque
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Withdrawn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
EP90107909A
Other languages
German (de)
English (en)
Other versions
EP0395043A3 (fr
Inventor
Hans Stein
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.)
DuPont de Nemours Deutschland GmbH
Original Assignee
DuPont de Nemours Deutschland GmbH
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 DuPont de Nemours Deutschland GmbH filed Critical DuPont de Nemours Deutschland GmbH
Publication of EP0395043A2 publication Critical patent/EP0395043A2/fr
Publication of EP0395043A3 publication Critical patent/EP0395043A3/fr
Withdrawn legal-status Critical Current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
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B65H18/106—Mechanisms in which power is applied to web-roll spindle for several juxtaposed strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/20—Actuating means angular
    • B65H2555/23—Actuating means angular magnetic, e.g. rotary solenoids

Definitions

  • the invention relates to a winding device for the simultaneous winding of several material strips, in particular photopolymer films, on winding cores, with at least one driven winding axis on which the winding cores are rotatably arranged, and with a torque transmission device for transmitting a torque from the winding axis to the winding cores has a hub part which can be displaced on the winding axis and a core receiving part which is displaceable in the winding core and can be fixed in the rotational and axial directions in this.
  • a material web is unwound from a wide roll and divided into a plurality of parallel material web strips by longitudinal cuts.
  • the material web strips formed in this way are simultaneously wound onto winding cores.
  • the individual winding cores can be arranged at a distance from one another on a winding axis.
  • the winding tensions in the individual windings can then be set independently of one another and are only influenced by the torque driving the individual windings.
  • hub parts, core receiving parts and spacer sleeves are alternately arranged on the winding axis.
  • the core receiving parts and the spacer sleeves can rotate freely on the winding axis, while the hub parts are non-rotatably connected to the winding axis, but are axially displaceable.
  • the hub parts have a friction surface that rubs against a friction surface of the associated core receiving parts.
  • the necessary contact pressure is generated by a spring which is arranged at one end of the shaft and clamps all hub parts, core receiving parts and spacer sleeves on a winding axis between them and a fixed counter bearing at the other end of the winding axis designed as a shaft.
  • the size of the torque transmitted is determined by the spring force.
  • the winding axis must be practically completely cleared and newly equipped so that the core receptacle and hub parts as well as the spacer sleeves for transmitting the frictional force are in the correct position and it is not by chance that a winding core must be arranged on a spacer sleeve.
  • a winding device of the type described in the introduction in that the torque transmission device is arranged in the radial direction between the winding axis and the winding core, in that the hub part can be fixed on the winding axis in the axial direction and in that one of the two parts has a magnetic field generating device, which creates a magnetic field that acts to transmit torque to the other of the two parts.
  • the torque transmission using a magnetic field eliminates any friction that could lead to dust.
  • the winding device according to the invention can thus also be used under clean room conditions.
  • the torque transmission device is arranged between the winding axis and winding core, so that no space has to be wasted on the winding axis in order to accommodate any friction surfaces.
  • Spacer sleeves are no longer necessary because the hub part can also be fixed in the axial direction on the winding axis. To change the cutting plan, it is therefore sufficient to axially shift the individual torque transmission devices on the winding axis in order to move them into a position suitable for accommodating a winding core bring.
  • the torque transmission device is very compact. An operator can handle it as a single object that only has to be pushed onto the winding axis and fixed there. The winding core can then be pushed onto the torque transmission device. As a result, the set-up times for loading the winding axes are reduced to a fraction of the times previously required. This speeds up the production process considerably. The changing times during the normal production process, ie the removal of fully wound windings and the application of empty winding cores, are also reduced, since the winding cores only have to be guided over the torque transmission devices.
  • the tension can be kept very even. These tensile stress values are influenced by external influences such as heat, dust, acceleration and deceleration only to a practically unmeasurable extent. Inaccuracies in the drive control are compensated for, as the magnetically transmitted torque is largely independent of the drive speed. This means that the drive machines and their control can be carried out much cheaper, since precise speed and torque control of the winding axis is not necessary. In addition to savings in procurement costs, this also simplifies Maintenance and operation of the prime mover.
  • the torque transmission device is largely maintenance-free. It is extremely durable because, apart from bearings, it has no mechanically moving parts and, above all, no wearing parts.
  • the conventional winding device can be converted into a winding device according to the invention by simply equipping it with the new torque transmission device.
  • the magnetic coupling between the hub part and the core receiving part can be changed.
  • the force that acts from one part to the other part and is responsible for the torque transmission can therefore be adjusted. This makes it possible to adapt the desired torque to different web widths. A larger torque is required for a wider strip of material than for a narrow one if both are to be wound with the same tension. Due to the adjustability, the number of torque transmission devices to be kept available can be kept low.
  • the set tensile stresses, i.e. the set torques can be maintained with very little deviations. Measurements have shown that the deviations are less than 5%.
  • the set values can be monitored with a simple tension balance, for example a spring balance. Of course, it is also possible to perform a calibration before using the torque transmission device for the first time and to record the values determined in this way on a scale.
  • the magnetic field generating device can have, for example, electromagnets. In a preferred embodiment, however, it has permanent magnets. This eliminates the need for electrical energy to have to guide the winding axis.
  • the torque range for individual torque transmission devices can be determined by using magnets of different strengths or by changing the number of magnets.
  • the main direction of the magnetic field in the magnetic field generating device advantageously runs parallel to the winding axis.
  • the magnetic field generating device consists of several permanent or electromagnets, which can also be arranged in the radial direction at a certain distance from the winding axis. This makes it possible to transmit a larger torque even with relatively low magnetic field strengths.
  • the magnetic field generating device is arranged on a carrier disk arranged perpendicular to the winding axis, and the magnetic field acts on an induction disk arranged parallel thereto, the carrier disk with the hub part or the core receiving part and the induction disk with the other of the two parts in a rotationally fixed manner is connected and an air gap is provided between the two disks. Due to the induction disk, a counterpart on which the magnetic field can act is available in practically every position of the magnetic field generating device. There are no interruptions in the counterpart that could lead to cogging moments. The air gap serves to linearize the transmission characteristics of the torque transmission device and ensures a non-contact relative movement between the carrier and induction disk.
  • the induction disk is made of a material that is subject to magnetic attraction forces and, due to its magnetic and / or electrical properties, opposes a change in the magnetic field.
  • the induction disc follows the rotation of the carrier disc.
  • the air gap is advantageously adjustable. A change in the air gap and thus a change in the transmitted torque and the tension is also possible on the winding axis.
  • the strength of the torque to be transmitted can also be set before the torque transmission device is pushed onto the winding axis. This is particularly advantageous when photosensitive materials such as photopolymer films or photographic silver halide films are to be wound up. The winding must then inevitably take place in a dark area.
  • the torque setting can, however, take place outside the dark area, which allows a much higher precision of the setting and makes operation much easier.
  • the width of the air gap can be easily measured, so that the setting of the correct torque can easily be checked with a feeler gauge. This means that the set-up times for setting the torque are very short.
  • the torque device is constructed in a modular manner, each module having a hub part, a core receiving part and a magnetic field generating device. This simplifies the storage of the various torque transmission devices. In principle, it is sufficient to keep a type of torque transmission device with a certain number of modules in stock. If a higher torque is required, two modules are simply coupled together. Since a larger torque is usually only desired for wider strips of material web, there are no space problems here either.
  • All modules advantageously make the same contribution to torque transmission. This saves time-consuming calculations. It is advantageous if the individual module can be adjusted over such a wide torque transmission range that the transmitted torque at the maximum position is greater than the transmitted torque from two coupled modules at the minimum position.
  • the hub parts of all modules and the core receiving parts of all modules are advantageously connected to one another in a rotationally fixed manner. This means that the operator continues to face a uniformly manageable object, even if several modules are coupled to one another.
  • the hub parts of all modules and the core receiving parts of all modules are firmly connected to each other for common displacement in the axial direction. If the air gap is to be adjusted, it is sufficient to adjust the air gap of a module. Due to the axial connection of the individual modules to each other, the air gap of the other modules is automatically set to the desired value.
  • the hub parts and the core receiving parts are advantageously screwed together.
  • the hub part of the one module has an external thread
  • the hub part of the adjacent module has an internal thread on the adjacent side. This leads to a compact exterior.
  • the thread can be secured against loosening in a conventional manner.
  • the main direction of the magnetic field in the magnetic field generating device runs radially to the winding axis. This is particularly advantageous when winding smaller windings with winding cores that have a smaller inner diameter.
  • the core receiving part advantageously covers all or part of the magnetic field generating device, the coverage area being adjustable. Since the air gap cannot be adjusted, the torque is adjusted by adjusting the overlap area.
  • an adjusting device which changes the magnetic coupling continuously during winding or in a specific manner as a function of the number of revolutions. Without changing the torque, the winding tension decreases with increasing diameter, which is usually desirable. In special cases, however, it may also be necessary to keep the tension constant throughout the winding. Then the torque must be increased depending on the diameter of the winding.
  • Such an adjusting device can change the air gap, for example, by axial pressure or engagement in a screw thread.
  • the drive of the winding axis advantageously has a backstop and a material web brake is provided. This ensures a uniform winding level even when the winding is interrupted, since the winding tension is maintained when stopping and restarting and there is no offset in the winding level. This is particularly advantageous when material web strips are wound up that are sandwich-like are formed, ie have a liquid or at least plastic mass between two cover layers. After the winding has been completed, these windings are provided with end plates which are intended to prevent the intermediate layer from escaping from the edges. If the winding is offset, these end disks cannot lie close enough to the winding mirror, so that the sealing function is no longer guaranteed.
  • a torque transmission device 3 is arranged between a winding axis 1 and a winding core 2.
  • the torque transmission device 3 has a hub part 4, which is fixed on the winding axis 1 in the axial and rotational directions with the aid of a screw 5 or another fastening device.
  • the torque transmission device 3 furthermore has a core receiving part 6 which can be rotated with respect to the hub part 4.
  • the core receiving part 6 is mounted on the hub part 4 with the help of bearings 7, 8.
  • the core receiving part 6 can with the aid of an adjusting ring 9, which is on a thread 10 on one end of the hub part 4th can be rotated in relation to the hub part 4 in the axial direction. After the shift, the core receiving part remains in the set position for the hub part 4.
  • the hub part 4 has three hub modules 11, 12, 13 and an end piece 14.
  • Each hub module 11, 12, 13 has a carrier disk 15, 16, 17 on which permanent magnets 18, 19, 20 are arranged.
  • the individual magnets have an approximately circular cross-section and are made, for example, of the Secolit material from Thyssen.
  • a plurality of magnets 18, 21, 22, 23 are always arranged on a carrier disk 15, 16, 17, preferably at least four.
  • the magnets have such an orientation that the main direction of the magnetic field generated by them runs approximately parallel to the winding axis 1.
  • the magnets are arranged alternately, i.e. they are alternately connected in the circumferential direction with their north pole and with their south pole to the carrier disk 15, 16, 17.
  • the carrier disk 15, 16, 17 itself is made of soft iron or of another magnetically highly conductive material and closes the magnetic field between the individual permanent magnets 18, 21, 22, 23 more or less shortly.
  • the core receiving part 6 has three core receiving modules 24, 25, 26 and an end piece 27.
  • Each core receiving module 24, 25, 26 has an induction disk 28, 29, 30, which lies opposite the carrier disks 15, 16, 17.
  • the induction discs consist, for example, of Oerstit 120 from Thyssen.
  • the air gaps are exaggerated for clarity.
  • the movement of the core receiving part 6 to the left is limited by a stop 38.
  • the setting of the correct air gap can be checked by measuring the width of the gap 37.
  • Each angular position of the adjusting ring 9 corresponds to a predetermined air gap length.
  • the diagram of FIG. 4 shows that each air gap length corresponds exactly to a transmitted torque.
  • the different curves in FIG. 4 relate to different magnetic strengths or magnetic numbers on the carrier disk.
  • the torque transmission device 3 is also functional with only one module, in which, for example, the hub part 4 consists of the hub module 13 and the end piece 14 and the core receiving part 6 consists of the core receiving module 24 and the end piece 27.
  • the modules have an external thread 34 at one end and an internal thread 35 at the other end, with which they can be screwed into one another. The thread can be secured against accidental opening in a conventional manner.
  • This connection ensures on the one hand that smooth surfaces of the core receiving part 6 and the hub part 4 are formed, so that the winding axis 1 can be easily inserted and the winding core 2 can be easily pushed on. On the other hand, this connection also enables the axial movement of one module onto the other Module is transferred. It is therefore sufficient to provide only a single collar 9 for actuating all modules.
  • the dimensions of the distances between the back of the carrier disks 15, 16, 17 and the induction disks 24, 25, 26 of the following modules are selected so that the magnetic field, for example of the permanent magnet 18, does not act on the induction disk 25.
  • the range of the transmissible torque of each module can be varied between a minimum value and a maximum value by adjusting the air gap.
  • the maximum value is preferably at least twice the minimum value. This makes it possible to continuously adjust the torque over a very large range. If the torque that can be transmitted with one module is no longer sufficient in the maximum position, two modules are simply used, which can then be operated in their minimum position. In a preferred embodiment, however, the adjustment range of an individual module is significantly larger.
  • the maximum transferable torque of a module is more than eight times as large as the minimum transferable.
  • the air gap width can also be measured by measuring the distance of the collar edge from the front edge of the hub part 4 or indirectly by measuring the width of the gap 37, for example with the aid of a simple distance or feeler gauge.
  • the permanent magnets can also be replaced by electromagnets.
  • the winding device can furthermore have an adjusting device which, in operation, i.e. when the winding axis 1 rotates, detects the adjusting ring 9 and in doing so changes the air gaps 31, 32, 33 continuously or from time to time with the aid of the adjusting ring. Without changing the air gaps, the torque transmitted to the winding core 2 and thus to the winding remains constant. As the winding diameter increases, the tension decreases. This is usually also desirable. For special cases in which the tension is to remain constant over the entire winding, a change in the transmitted torque is necessary depending on the winding diameter.
  • the drive motor of the winding axis 1, not shown, has a backstop.
  • the wound material web is braked by a material web brake when this motor stops. Since the torque transmission device 3 transmits torque even when it is at a standstill, the winding cannot unwind backwards. The tension is therefore retained even when the machine is at a standstill. This enables a relatively uniform winding level.
  • the winding core 2 is held on the core receiving part 6 with the aid of a conventional adjustable holding device 36. After loosening the holding device, the winding core 2 can simply be pulled off the core receiving part 6. If a plurality of torque transmission devices 3 are arranged on a winding axis 1, they all have the same outside diameter, so that the winding cores can be pulled off easily over the individual torque transmission devices 3.
  • a plurality of torque transmission devices 3 are arranged on a winding axis 1, they all have the same outside diameter, so that the winding cores can be pulled off easily over the individual torque transmission devices 3.
  • FIG. 3 shows a further embodiment, which is particularly suitable for winding cores with a smaller diameter. Elements which correspond to those in FIG. 1 are provided with reference numerals increased by 100.
  • a torque transmission device 103 is arranged on the winding axis 301, onto which a winding core 102 is pushed and fastened in the usual way.
  • the torque transmission device 103 has a hub part 104 fastened to the winding axis 101 and a core receiving part 106.
  • the core receiving part 106 is rotatably supported on the hub part 104 with the aid of bearings 107, 108 and is displaceably supported in the axial direction with the aid of an adjusting ring 109 which can be rotated on a thread 110.
  • the core receiving part has permanent magnets 118.
  • the main direction of the magnetic field is not in the axial, but in the radial direction.
  • the permanent magnets are arranged alternately, that is to say an alternating north pole, a south pole, a north pole, etc., in the direction of the winding axis 101.
  • the hub part 104 largely consists of a magnetically and electrically non-conductive material 111, to which none is caused by the magnetic field Forces can be transferred.
  • An induction layer 128, on which the magnetic field can exert forces, is arranged only in an axial section.
  • the radial air gap between the hub part 104 and the core receiving part 106 cannot be seen in the figure.
  • the aim is to keep this air gap as small as possible. In extreme cases, it is sufficient to run the two parts close together, but without friction.
  • a statement about the set torque can be obtained from the width of the gap 137 between the core receiving part 106 and the stop 138 arranged immovably on the hub part 104.
  • the magnetic field generating device can also be arranged in the core receiving part 6, while the induction disks then belong to the hub part 4.
  • the permanent magnets can also be arranged on the hub part 104 if the induction part 128 is arranged on the core receiving part 106.
  • FIG. 4 shows a family of curves for three different exemplary embodiments, in which the left curve has four permanent magnets, the middle curve has six permanent magnets and the right curve has eight permanent magnets on the carrier disk. From this it can be seen that the relationship between the transmitted torque and the air gap length is largely linear in a large partial area.

Landscapes

  • Winding Of Webs (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
EP19900107909 1989-04-27 1990-04-26 Dispositif d'enroulement Withdrawn EP0395043A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913919 1989-04-27
DE3913919A DE3913919C2 (de) 1989-04-27 1989-04-27 Wickelvorrichtung

Publications (2)

Publication Number Publication Date
EP0395043A2 true EP0395043A2 (fr) 1990-10-31
EP0395043A3 EP0395043A3 (fr) 1991-07-31

Family

ID=6379597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900107909 Withdrawn EP0395043A3 (fr) 1989-04-27 1990-04-26 Dispositif d'enroulement

Country Status (4)

Country Link
US (1) US5180115A (fr)
EP (1) EP0395043A3 (fr)
JP (1) JPH0395056A (fr)
DE (1) DE3913919C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975102A3 (fr) * 2007-03-28 2009-07-22 Heidelberger Druckmaschinen Aktiengesellschaft Axe de friction entraîné par moteur électrique

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Publication number Priority date Publication date Assignee Title
US5478025A (en) * 1994-08-09 1995-12-26 Wang; Shing Tension controlled winding device
DE19606978A1 (de) * 1996-02-24 1997-09-11 Mtd Magnettechnik Deutschland Vorrichtung zum Regeln der Drehzahlen bei Wickeleinrichtungen von Bändern, Fäden, Drähten oder dergleichen
EP1362812B1 (fr) * 1998-10-14 2006-09-06 Fuji Photo Film Co., Ltd. Système de traitement d'une bande
TWI424938B (zh) * 2011-08-23 2014-02-01 Ind Tech Res Inst 電動輔助轉輪機構
CN104742181B (zh) * 2013-12-26 2016-06-29 活全机器股份有限公司 抵撑套筒与具有该抵撑套筒的切张机收废料装置
EP4101796B1 (fr) * 2021-06-11 2023-08-16 FMS Force Measuring Systems AG Dispositif d'enroulement d'une bande de matière coupée en longueur et système d'enroulement régulé d'une bande de matière coupée en longueur

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EP0002429A1 (fr) * 1977-12-14 1979-06-27 VOEST-ALPINE Aktiengesellschaft Tambour pour l'enroulement simultané d'au moins deux bandes
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DE2726321A1 (de) * 1976-06-11 1977-12-22 Vista Dev Vorrichtung zum wickeln von rollen
EP0002429A1 (fr) * 1977-12-14 1979-06-27 VOEST-ALPINE Aktiengesellschaft Tambour pour l'enroulement simultané d'au moins deux bandes
GB2056417A (en) * 1979-08-14 1981-03-18 Lund M Method and apparatus for slitting and rewinding web materials
DE3446190A1 (de) * 1984-12-18 1986-06-26 Heinrich 8673 Rehau Kunel Elektromaschine
DE3824782A1 (de) * 1988-07-21 1990-01-25 Stoll & Co H Abzugsvorrichtung fuer flachstrickmaschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975102A3 (fr) * 2007-03-28 2009-07-22 Heidelberger Druckmaschinen Aktiengesellschaft Axe de friction entraîné par moteur électrique

Also Published As

Publication number Publication date
DE3913919C2 (de) 1993-11-18
DE3913919A1 (de) 1990-10-31
EP0395043A3 (fr) 1991-07-31
JPH0395056A (ja) 1991-04-19
US5180115A (en) 1993-01-19

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