EP0431476A1 - Dispositif et méthode pour enrouler une bande - Google Patents

Dispositif et méthode pour enrouler une bande Download PDF

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Publication number
EP0431476A1
EP0431476A1 EP90122885A EP90122885A EP0431476A1 EP 0431476 A1 EP0431476 A1 EP 0431476A1 EP 90122885 A EP90122885 A EP 90122885A EP 90122885 A EP90122885 A EP 90122885A EP 0431476 A1 EP0431476 A1 EP 0431476A1
Authority
EP
European Patent Office
Prior art keywords
winding
roller
rollers
web
space
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Withdrawn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
EP90122885A
Other languages
German (de)
English (en)
Inventor
Wilhelm Abraham
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.)
F H SCHULE GmbH
Original Assignee
F H SCHULE 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 F H SCHULE GmbH filed Critical F H SCHULE GmbH
Publication of EP0431476A1 publication Critical patent/EP0431476A1/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Withdrawn legal-status Critical Current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
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/16—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web by friction roller

Definitions

  • the invention relates to a device for winding a web between winding rollers acting on the winding circumference, initially forming a substantially closed winding space, which are arranged to expand the winding space in accordance with the increase in the winding diameter at least partially movable relative to one another.
  • a known device of this type has a fixed roller head consisting of two stationary comb rollers and a roller forming comb, between the rollers of which the web to be wound is introduced into the winding space, and a movable roller head which is formed by three intermeshing comb rollers.
  • the two outer comb rollers of the movable rolling head engage in the comb rollers of the fixed rolling head in such a way that there is a winding space which is closed on all sides (with the exception of the feed gap).
  • the web to be wound is introduced into this winding space, it is driven on all sides in the winding direction.
  • the movable roller head gradually deviates from the fixed one back, whereby the changing space adapts to the size of the winding.
  • the web feed ends the web is cut off
  • the movable rolling head opens the winding space so far that the roll formed can fall out downwards.
  • the web is fed horizontally between the vertically stacked rollers of the fixed roller head.
  • the movable roller head whose rollers are also arranged vertically one above the other, deviates in the horizontal direction. The weight of the roll is borne by the lower rollers of the fixed and movable roller head. This means that the carrying conditions become less favorable as the winding diameter increases.
  • the tangent at the point of contact between the load-bearing rollers and the winding includes an increasingly smaller angle with the vertical direction as the winding diameter increases.
  • the radial force finally takes on very high values, which are much higher than those of the load originating power. This limits the achievable winding diameter in the case of soft or sensitive material, because the high force can otherwise damage the material (formation of grinding marks) or lead to the formation of irregular windings, the latter being prevented in the closed roller arrangement, or only with difficulty, by externally engaging guide elements can.
  • So-called carrier roller winders are also known, in which the winding that forms rests on two parallel, horizontally arranged rollers, the driving force being transmitted from the carrier rollers to the winding under the pressure generated by the weight of the winding.
  • Such a carrier roller winder does not have the disadvantages explained above for the circumferential winder. It also has the advantage that the finished winding can be removed from above or to the side, while in the case of circumferential winders the winding remains essentially inaccessible from the outside until it is released from the winding space downwards.
  • the winding must contain a core at least when the winding begins.
  • DE-A 22 48 816 and FR-A 25 77 913 show examples of circumferential winders in which the winding space is delimited on all sides by winding rollers until the end of the winding process. Only when the finished roll is removed can an upper group of winding rolls be lifted or lower a lower group of winding rollers so that the winding can be removed from the side.
  • FR-A 21 14 479 shows a type of winder in which the circumferentially driven winding is constantly carried by a winding shaft passing through it.
  • the problem outlined above for circumferential winders does not occur with such machines.
  • the invention relates to a type of winder in which the forces running transversely to the axis of rotation, namely the drive forces acting in the circumferential direction and the radially acting load-bearing forces, are only transmitted to the angle on the circumference.
  • the invention has for its object to provide a circumferential winder that allows the formation of a larger winding even in soft or sensitive materials without the need for a winding core and without winding shaft and in which the winding is more accessible.
  • the roller arrangement comprises a first group of at least two rollers which are initially arranged approximately vertically one above the other, this group as the winding diameter increases to form a growing, open space between the top roller of this group and the its adjacent roller of a second group can be pivoted into an approximately horizontal position, in which it forms a support roller arrangement.
  • the device For the initial formation of the winding, the device forms a circumferential winder with a winding space closed on all sides, so that the winding can be formed without a core. However, a core can be used if desired.
  • the device is converted into a support roller arrangement. This is to say that the winding space is no longer limited on all sides by the winding rollers and the driving force under which the radial pressure exerted by the weight of the roll is transferred to a pair of rolls (carrier rolls) carrying it.
  • the support rollers do not move away from one another as the winding diameter increases.
  • the invention does not require that there are only two support rollers. Rather, there may also be several which are controlled in accordance with the changing circumferential contour of the winding. It is also not necessary that two or more support rollers are arranged symmetrically to the vertical direction in each phase of the process; however, this is advantageous in the final phase.
  • transition from the closed arrangement of the rollers to the open carrier roller arrangement can take place by means of a brief switching operation, which therefore changes the load conditions rapidly.
  • a slow transition is also possible and usually preferable.
  • Intermediate stages can be provided which cannot be clearly assigned to either the one or the other type.
  • the invention makes it possible to maintain the known and proven arrangement of a fixed rolling head with at least two rollers with a fixed axis.
  • the first group of movable rollers is expediently combined in a movable roller head with an axis arrangement that is invariable relative to one another.
  • the movement of the movable roller head deviates from the previous straight linear movement in the sense of the invention in that it is pivotally arranged overall, whereby it closes the roller arrangement in the sense of a circumferential winder at one end of the pivoting path and forms the support roller pair in another section of the pivoting path .
  • a major advantage of the invention is that the winding during a substantial part of the winding process from outside the Roller arrangement is accessible through the space formed in the roller arrangement and can therefore be acted on from the outside.
  • an axial guide of the side edges or the end faces of the winding can be provided in order to prevent the winding or the central part of the winding from axially deflecting.
  • the length and / or the diameter of the winding can also be scanned by sensors or without contact.
  • the wrap can also be wrapped with a packaging sleeve and labeled. It is also an essential advantage of the invention that the finished roll can be removed upwards or to the side.
  • a gripper can be inserted through the intermediate space into the roller arrangement, which is designed in such a way that it grips the roll on the circumference and thereby stabilizes itself. This is particularly advantageous in the case of coils made of deformable or resilient material which tend to change their shape if their shape achieved by the winding process is not fixed.
  • the distance between the lower rollers from one another is smaller than the diameter of a winding core to be inserted.
  • a winding core for example a winding tube
  • the pivot axis of the movable rolling head coincides with the axis of the roller closer to the web feed. This simplifies the mounting of the rall head and the transmission of the drive movement to the rolling head.
  • a large angle ie as close as possible to 180 °
  • the limit for this angle is given by the stability of the winding on the pair of carrier rollers. This depends, among other things, on the forces generated by the Drive and can be practiced on the winding by the web to be fed. The stability and smoothness can be significantly increased by the fact that the winding is constantly in substantial contact with a roller located on the web feed side, which is arranged higher than the support rollers.
  • This does not necessarily have to be the roller from which the web is fed directly to the winding; however, this is appropriate.
  • the relative position of this roller in relation to the support rollers must be constantly adapted to the growing winding diameter. In known arrangements, this is done in that the winding itself presses said roller and the support rollers apart against a resilient force. It may be more expedient if the distance between the rolls mentioned is servo-controlled, preferably depending on the measurement result of a scan of the diameter of the roll.
  • the pair of support rollers can be horizontally displaceable in relation to the rollers of the second group, so that the pair of support rollers can be removed from the rollers of the fixed rolling head in accordance with the increasing diameter of the roll.
  • the support roller further lying on the fixed rolling head is horizontally displaceable.
  • a vertical displacement of the support roller pair can be provided.
  • the invention has recognized that with one and the same circumferential winder, which defines a certain initial diameter setting by the size of the winding space, it is nevertheless possible to produce coils with different inner diameters and the same outer diameter despite different web lengths.
  • This is according to the invention achieved that the expansion of the winding space in the initial phase of winding is not controlled according to the increase in the winding diameter with the inner diameter of the winding kept constant, but the inner diameter of the winding is influenced by controlling the size of the winding space. If, for example, an inner diameter of the winding is to be achieved which is smaller than the initial size of the winding space, the winding space is not or only slightly enlarged during a certain initial winding period, so that the winding is forced to collapse and assume a smaller inner diameter .
  • Two comb rollers 1 and 2 which are stationary and driven in the direction of the arrow at the same peripheral speed, together form the fixed rolling head, through the roller gap 3 of which the web 4 to be wound is fed.
  • the fixed roll head can contain further parts for influencing the winding process, in particular a known roll forming comb.
  • the movable roller head 6 comprises two external rollers 7 and 8 and an intermediate roller 9 which are mounted on a common carrier 10 and, like the rollers 1 and 2 of the fixed roller head, are driven in the same circumferential direction.
  • the rollers 7 and 8 are designed as rollers 1, 2 and 9 as complementary comb rollers. All rollers are expediently driven. In the position shown in FIG. 1, in which all of the comb rollers, with the exception of the feed nip 3, intermesh, a winding space 11 is formed between them, in which the web 4 forms the winding 12. In the course of the winding process, its diameter increases. In order to make room for this, the movable rolling head 6 is moved to the left in the drawing. In this respect, the device can be regarded as known.
  • the movable roller head 6 is pivoted according to the invention, as can be seen in the sequence of FIGS. 1 to 9.
  • the important consequence of this pivoting is that the winding is constantly supported in a favorable manner by supporting rollers.
  • the movable rolling head 6 (FIG. 4) swivels further, a stage is exceeded in which the roller 7 lies vertically below the center of gravity of the roll 12.
  • the winding which was previously supported by the roller 1 on the right-hand side, can be released from it, so that it subsequently only from rollers 7 and 8 is carried, which finally occupy a horizontal position next to each other (Fig.
  • the roll expediently remains in contact with the roller 1 so that it additionally stabilizes it and guides the web 4 onto the roll circumference.
  • the finished winding can be removed from the rollers 7, 8 upwards or to the side.
  • grippers can be brought up from above or the roller arrangement 7, 8 can be tilted in such a way that the roll is laterally tilted onto a holding device (not shown).
  • It can be wrapped beforehand by inserting the beginning of the wrapping path between the cut end of the roll and the next upper layer and then rotating the roll on the rollers 7, 8. Labeling or other treatments of the wrap can also be done be made as long as it is in the winding device, since it is freely accessible there.
  • a gap is created between the rollers 8 and 1 during the movement of the movable rolling head, through which the roll is accessible from the outside.
  • guide devices or stops can now be engaged in the winding space from above, which act axially on the end faces of the winding in order to limit the length of the winding and to prevent the so-called telescoping. This contributes to the availability of a high winding speed.
  • the guide devices or stops mentioned can be formed, for example, by a pair of supports 16 with stop plates 17 or the like which are rotatably arranged thereon and act centrally on the end face of the winding (FIG. 3).
  • the movement of the movable rolling head 6 initially takes place exclusively as a pivoting movement about a pivot axis coinciding with the axis 13 of the roller 7, in that a toothed rack 14, which interacts with a toothed arc 15 of the movable rolling head, is moved.
  • the movable rolling head is shifted straight to the left horizontally. If desired, the pivoting movement and the translatory movement can be superimposed on one another. An additional vertical movement in any combination with the horizontal and the swiveling movement is also possible.
  • the invention does not preclude the removal of the movable roll head from the fixed roll head against a resilient force under the influence of the force exerted thereon by the growing reel. In many cases, however, it is more convenient to actively control the moving roller head.
  • the control is based on the desired or calculated increase in diameter of the Derived from the winding.
  • the movement of the movable roller head does not always have to take place uniformly in accordance with the increase in the winding diameter if, in the initial phase of winding, the inner diameter deviates from the inner diameter that was set at the start of winding by slower or faster enlargement of the winding space. In this way, a desired outer diameter can be predetermined for a given web length. In particular, this makes it possible to define predetermined (for example matching) outer diameters of the resulting coils for different web lengths with one and the same machine only by means of the motion control.
  • the movement control of the movable rolling head 6 is expediently dependent on the measurement of the winding diameter, which is preferably carried out without contact (for example by means of optoelectronic means).
  • the fixed rolling head comprises, in addition to the rollers 1 and 2, which between them include the feed nip 4 with winding comb 5 and are mounted about fixed axes 16, 17, two rollers 18, 19, the bearings of which around the fixed axes 16, 17 are pivotable.
  • the movable rolling head 6 can be constructed, arranged and controlled as described with reference to the first exemplary embodiment.
  • the additional rollers 18, 19 a larger winding space 11 can be enclosed in order to be able to form a large winding inner diameter or a large winding core 20 with comparatively small rollers to be able to record.
  • the arrangement is such that the pivotable rollers 18, 19 of the fixed rolling head are involved in the formation of the winding circumference at the start of winding, when the arrangement works as a circumferential winder.
  • it can also be provided that they can be swung out in the initial stage to form smaller inner winding diameters.
  • FIG. 10 shows the state of the device at the start of the winding process
  • FIG. 11 illustrates the functional stage in which the arrangement has largely opened, the fixed rolling head forming a pair of support rollers.
  • the pivotable roller 18 is used to guide the web onto the winding circumference. By pneumatic means it can be pressed against the circumference of the winding with a flexible, constant force.
  • Fig. 12 illustrates the arrangement in a final stage of winding with a large winding diameter.
  • the winding circumference is not only supported and driven by the pivotable roller 12, but also by the fixed roller 16, which leads to a correspondingly better concentricity.
  • the installation of the fixed roller 1 on the winding circumference need not be limited to the final stage of the winding process.

Landscapes

  • Winding Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)
EP90122885A 1989-12-08 1990-11-29 Dispositif et méthode pour enrouler une bande Withdrawn EP0431476A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3940702 1989-12-08
DE3940702A DE3940702A1 (de) 1989-12-08 1989-12-08 Vorrichtung und verfahren zum aufwickeln einer bahn

Publications (1)

Publication Number Publication Date
EP0431476A1 true EP0431476A1 (fr) 1991-06-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122885A Withdrawn EP0431476A1 (fr) 1989-12-08 1990-11-29 Dispositif et méthode pour enrouler une bande

Country Status (3)

Country Link
EP (1) EP0431476A1 (fr)
DE (1) DE3940702A1 (fr)
NO (1) NO905308L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995032908A1 (fr) * 1994-05-26 1995-12-07 Valmet Corporation Procede et dispositif d'enroulement d'une bande
EP0933320A2 (fr) * 1998-01-28 1999-08-04 Voith Sulzer Papiertechnik Patent GmbH Bobineuse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH686885A5 (de) * 1993-11-26 1996-07-31 Anton Ruegg Verfahren und Vorrichtung zum Aufwickeln von bahnfoermigem Material.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2114479A5 (fr) * 1970-12-10 1972-06-30 Jagenberg Werke Ag
DE2248816A1 (de) * 1972-09-12 1974-04-11 Fatra N P Vorrichtung zum automatischen aufwickeln von bandartigen gebilden
FR2577913A1 (fr) * 1985-02-28 1986-08-29 Tmc Srl Trade Machinery Cy Machine automatique pour enrouler des elements en forme de feuilles, en particulier des peaux

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2114479A5 (fr) * 1970-12-10 1972-06-30 Jagenberg Werke Ag
DE2248816A1 (de) * 1972-09-12 1974-04-11 Fatra N P Vorrichtung zum automatischen aufwickeln von bandartigen gebilden
FR2577913A1 (fr) * 1985-02-28 1986-08-29 Tmc Srl Trade Machinery Cy Machine automatique pour enrouler des elements en forme de feuilles, en particulier des peaux

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995032908A1 (fr) * 1994-05-26 1995-12-07 Valmet Corporation Procede et dispositif d'enroulement d'une bande
US5732902A (en) * 1994-05-26 1998-03-31 Valmet Corporation Method and device in winding of a web
US5961065A (en) * 1994-05-26 1999-10-05 Valmet Corporation Method in winding of a web
EP0933320A2 (fr) * 1998-01-28 1999-08-04 Voith Sulzer Papiertechnik Patent GmbH Bobineuse
EP0933320A3 (fr) * 1998-01-28 2002-07-31 Voith Paper Patent GmbH Bobineuse

Also Published As

Publication number Publication date
NO905308L (no) 1991-06-10
NO905308D0 (no) 1990-12-07
DE3940702A1 (de) 1991-06-13

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