GB2249542A

GB2249542A - Winding webs continuously

Info

Publication number: GB2249542A
Application number: GB9123582A
Authority: GB
Inventors: Karl-Heinz Leifheit; Der Heide Roland Von
Original assignee: STAHLKONTOR MASCHINENBAU; Stahlkontor Maschinenbau GmbH
Current assignee: STAHLKONTOR MASCHINENBAU; Stahlkontor Maschinenbau GmbH
Priority date: 1990-11-06
Filing date: 1991-11-06
Publication date: 1992-05-13
Anticipated expiration: 2011-11-06
Also published as: DE4035143C2; GB9123582D0; DE4035143A1; GB2249542B; FR2668760B1; FR2668760A1

Abstract

A winding core 2 from a magazine 1 is positioned on rollers 8, 9 by pivoted arm 16, which carries a roller 7, the core being held in this position by the roller 7 and a roller 19 while web 12 passes by to wind onto the preceding core at 40. When 40 is nearly fully wound, adhesive is applied to the web at 39 and the adhesive section is cut at 32 to give a trailing end which is adhered to wound mass 40 and a leading end which is adhered to the new winding core. Web now winds onto the new core and when the winding reaches a certain diameter, rollers 7, 8, 9 and 19, together with support 20, rise to transfer the partially wound mass to rollers 26, 27, where the winding is completed while the next core is withdrawn from the magazine. <IMAGE>

Description

4 L 2249542 1 - Windina Machine This invention relates to a winding

machine, more particularly to the axle-less winding of a web of material or a plurality of adjacent strips of plastics material, fleece, paper or the like which are guided from below through the gap between a pair of transportation rollers on to one or more adjacent winding cores, comprising a fastening and cutting device, a loading device for new winding cores and an ejection device for fully wound reels.

In transportation roller winding machines, the material web is usually brought to a standstill in order to change the reel and is cut by hand or by means of a cutting device, the start of the material web being applied to a new winding case, for example by fastening or-bonding. The fully wound reel resting on the transportation rollers is ejected or removed using complicated and operator unfriendly devices so that new empty winding cores can be loaded.

Complicated material storage is necessary for the inoperative periods during reel changes. Particularly difficult in this respect is the reel changing and the - 2 adjacent winding of a plurality of eveniy or unevenly divided material webs in the case of multi-purpose winding. In such cases, winding shafts are required, which greatly complicates the arrangement of the adjacent winding cores.

In the case of a double transportation roller winding machine of the above type known from DE 31 51 256, the fully wound reel is ejected by means of an ejector beam from the transportation rollers on to a lowering platform, whereupon after loading a new empty winding core on to the transportation rollers, the cutting and bonding is effected by means of a cutting and bonding device which is displaceable along the winding core. In this winding machine, the reel change is effected whilst the material web is at a standstill, which not only leads to down time but also makes multipurpose winding impossible.

In DE 26 38 368, a method is described for changing re-els, in which the transportation rollers are stopped for the reel change, a new winding core is inserted from the end face of the rollers into the wedge formed between the transportation rollers and the fully wound reel and the finished reel is then lifted by one transportation roller and moved over the other transportation roller. This method is not suitable for substantially or entirely r 1 dispensing with the inoperative times. Nor is it suitable for multi- purpose winding.

A double transportation roller winding machine is known from DE 33 28 516, which is suitable for winding material webs on to winding cores having different diameters. The cutting and bonding of the material web is effected by means of a pivotable bonding and cutting device whilst the machine is inoperative. This transportation roller winding machine cannot be used for, multi-purpose winding or for a reel change with a continuous material web velocity.

In order to obtain a reel change at high web velocities with a single material web width or a web width divided numerous times, it is conventional to use a multiple winding reversing machine with a cutting device in place of a transportation roller winding machine, as is the subject matter of DE 17 74 101. In this reversing winding machine, the fully wound reel pivots into a fully wound position and at a second winding position the material web is cut and laid on to the empty winding core. However, the necessary use of winding shafts in reversing winding machines of this type proves to be a considerable disadvantage, since complicated friction winding shafts are used for free central winding with multiple webs, which winding shafts only allow for large winding diameters and maximum web widths to a limited degree. In order to simulate many advantages of transportation roller winding, complicated contact rollers are pivoted against the running winding reel in order to prevent air being trapped during the winding process and in order to determine the winding tightness.

It is one object of this invention to provide a double transportation roller winding machine of the kind referred to, which is characterised by a structurally simple automatic change-over mechanism ensuring a more rapid and reliable winding reel change, without the use of a winding shaft and without having to stop the machine, with a material web extending over the entire width or divided into a plurality of useful strips of plastics material, fleece, paper or the like on to one or more adjacent winding cores possibly with different diameters corresponding-to the material web.

According to this invention there is provided a double transportation roller winding machine for the axle-less winding of a web of material or a plurality of adjacent strips of material guided from below through the gap between a pair of transportation rollers on to one or more adjacent winding cores, comprising a fastening and cutting device, a loading device for new winding cores and an ejection device for fully wound reels, r i 1 characterised in that the empty winding cores supplied to the transportation rollers from a feed magazine are supported by contact rollers acting upon generally opposite circumferential sides of the winding core or cores or initially wound reel or reels, the contact rollers being mounted together with the transportation rollers so as to be vertically adjustable along a substantially vertically extending guide device into the region of two transportation rollers of a second transportation roller pair used for finishing the winding of the reel or reels.

In a preferred embodiment of the invention, the contact roller arranged on the side of the core magazine is designed as the loading roller transferring the winding cores and the contact roller arranged on the substantially opposite side is designed as the laying roller applying the material web or strips on to the winding cores.

The driven loading roller and laying roller are mounted at the free ends of pivot arms, which can be pivoted into an operative position effecting the guidance of the winding core or cores or initially wound reel(s) and into an inoperative position. In the inoperative position of the loading and laying rollers a heightadjustable pressure roller is effective, which is expediently arranged at the free end of a substantially downwardly pointing arm of a height-adjustably mounted angle lever.

Furthermore, it has proved advantageous for the cutting device to be arranged on the pivot arm of the laying roller with a blade, which is movable transverse to the direction of movement of the material web and cuts the material web on the winding core, and an adhesive application device is provided as a fastening device which is preferably designed as an adhesive spray device with spinning spray application heads and is arranged in the region of a tension measuring roller.

It has also proved advantageous for the drivably designed transportation rollers of the upper transportation roller pair receiving the unfinished winding reel to have a larger diameter than the initially effective transportation rollers of the lower transportation roller pair and finally if the transportation rollers of the upper transportation roller pair are adjustable substantially in a horizontal plane transverse to their axle mounting- Using the means according to the invention, a double transportation roller winding machine is provided having a fully automatic change-over mechanism, which allows for a reliable changing of the fully wound reels and a r 7 - perfect loading of new empty winding cores, without requiring a winding shaft and without having to stop the machine. In this respect, the material web approaching from below through the gap between the roller pair partially loops around the winding core, which is fixed by the contact roller, which can be pivoted inwards and is driven at the same speed as the material web. In order to prevent the winding cores from being displaced, they can be defined and held close together by first tail spindles in the region of the last effective transportation roller pair and by second tail spindles in the region of the last effective transportation roller pair. By means of the cutting device running along the winding core or cores in the form of a pivotable, rotating or stationary blade, the material web is cut and the resulting starting point of the material web is laid on to the winding core by the laying roller enclosing the winding core. The velocity of the blade is adjustable and can be varied proportional to the material web velocity in order to obtain as short a point length as possible for the required laying process. The cutting device can be easily adjusted to the selected core diameter by means of stops.

After the cutting and laying process and after a certain winding diameter has been reached, the contact - 8 rollers applied against the winding cores and the cutting device are pivoted into their starting position and a pressure roller, which can be applied against the winding reel with varying pressure, is applied and accompanies the wound reel until the end of the winding process. According to the invention, after the lifting of the lower transportation roller pair together with the contact rollers and the pivot arms towards the second transportation rollers of the upper transportation rollep pair having the larger diameters and adjustable in their distance from one another, the winding reel wound up to this point is taken over in a smooth and impact-free manner by the upper transportation rollers and wound on said rollers until full. In this respect, the first tail spindles defining the winding cases are automatically replaced by the second tail spindle pair, which takes over the winding reel increasing in size until the end of the winding process. After the transfer of the winding reel to the second transportation roller pair, the transportation roller pair comprising the transportation rollers having the smaller diameter and the contact rollers with their pivot arms, which are all arranged on a height-adjustable component of the double transportation roller winding machine, are lowered into the starting position for a new reel change. In i - 9 the region of the upper transportation roller pair, the fully wound reel is transferred after the change-over process on to a depositing table and/or is removed by lif ting tools.

As a result of the adhesive application device advantageously designed as an adhesive spray device with spinning spray application heads, it is possible to carry out the application of the adhesive with a variable adaptation to the different winding cores in such a manner that the laying procedure takes place shortly after the adhesive passes the cutting blade of the cutting device and the remaining adhesive application is used for binding the remaining point to the end of the fully wound reel.

The particular advantage of this invention is that the entire core and reel changing procedure can be effected automatically,-the device can be directly used in a production line and costly rewinding procedures can bedispensed with. Since it is not necessary to stop the machine during a reel change and since winding shafts with labour-intensive loading of the winding cases are unnecessary, it is possible to achieve high production velocities of approximately 400 m/min and above to wind extremely large web widths as single material webs of approximately 100 mm or webs divided into a plurality of 01 widths.

The invention is further described and illustrated by a preferred embodiment as an example illustrated in the accompanying schematic drawings, in which:

Figure 1 shows a double transportation roller winding machine with the components most essential to the invention after the loading of an empty winding core onto the transportation rollers of the lower r transportation roller pair, and Figure 2 is the same view of the winding machine after the transfer of the winding reel on to the transportation roller of the upper transportation roller pair for the final winding of the winding reel.

As shown in Figure 1, a double transportation roller winding machine not shown in detail comprises a supply magazine 1 for empty winding cores 2, which are supplied to-the winding machine in a manner described in detail below. The supply magazine 1 comprises a conveyor belt 4 continuously moving around roller 3 with retaining elements 5, which are secured to the conveyor belt 4, having a substantially L-shaped section and are arranged on the conveyor belt 4 in such a manner that they can convey winding cores 2 having different diameters, as 11 - shown in broken lines. In a manner described in further detail below, the winding cores 2 pass via a guide plate 6 in the region of a driven contact roller 7 designed as a loading roller on to rotatable transportation rollers 8, 9 of a first transportation roller pair 11. During the loading movement and the mounting in the roller bed, the winding cores 2 are supported by a fixed but pivotable guide plate 10. The transportation rollers 8 9 are arranged close together. Guided through the transportation roller gap from below is a material web 12, which either extends over the entire width or is divided with the aid of a longitudinal cutting device 13 into a plurality of adjacent strips. The winding cores are also designed according to the material web width or the strips. The material web 12 is deflected by rolling, not shown, over a cutting roller 14, in whose region the longitudinal.cutting device 13 is arranged, and after being deflected around a further tension measuring roller 15 is finally introduced into the roller gap of the lower transportation rollers 8, 9.

The loading and guidance as well as the supporting of the winding cores 2 in the roller gap of the lower transportation rollers is effected with the aid of the loading roller 7, which is arranged at the free end of a pivot arm 16, which is mounted so as to pivot about a r pivot axis 17 and can be pivoted into an operative position shown in unbroken lines (Figure 1) and into an inoperative position (Figure 2). With the aid of the loading roller 7, the winding core or cores is/are transferred according to the arrows 18 from the supply magazine 1 into the roller gap, in which the winding cores are fixed or supported on one circumferential side by the loading roller 7 and on their opposite circumferential side by a further, similarly driven contact roller 19. The contact roller 19 acting as a laying roller for the material web is arranged at the free end of a pivot arm 21, which is pivotally mounted at 22 and can also be pivoted into the operative position shown in Figure 1 and an inoperative position shown in Figure 2. In addition, the winding core or cores is/are defined and held together axially on both sides by tail spindles 23. The tail.spindles 23 are adjustable in the axial direction and in the vertical direction in their height and are also pivotable. The stroke of the height adjustment is indicated a. The lower transportation rollers 8, 9 of the lower transportationroller pair 11 as well as the loading roller 7 and the laying roller 19 with their pivot arms 16 and 21 are arranged on a component 20, not shown in detail, which is adjustable in its height along a substantially vertically arranged r l! 13 guide device 25.

is designated b.

The stroke of this height adjustment In this manner, the lower transportation rollers 8, 9 can be lifted with a wound reel 40' arranged thereon into the region of two transportation rollers 26, 27 of a further, higher transportation roller pair 28. The lower transportation rollers 8, 9 are shown in Figure 1 in their upper position in broken lines.

Arranged on the pivot arm 21 of the laying roller 1 is a cutting device 29, which comprises a blade 32 under the effect of a spring 31. This blade can be pivotable, rotatable or stationary, elastically supported by the spring. By means of easily replaceable stops, not shown, the cutting device 29 can be applied against the respective diameter of the winding cores 2 in such a manner that during the cutting process the blade 32 cuts the material web 12 on the winding core 2 transversely at high speed. This results in an oblique cut, whose starting point is grasped by the rollers 19, 7 and 8 laid on to the winding core 2.

In the upper position of the lower rollers 8, 9 the forming reel 40' is guided between the gap between the two large transportation rollers 26, 27 of the upper transportation roller pair 28 adjustable in the horizontal plane. In this respect, the forming reel 40' - 14 is received in a smooth and impact-free manner by the large transportation rollers 26, 27. Prior to this, a pressure roller 33, which is arranged at the free end of a substantially vertically downwardly extending arm 34 of an angle lever 35, is applied against the forming reel. The angle lever 35 is mounted so as to be heightadjustable within the machine frame along a substantially vertically extending guide 36 over the distance c, so that the pressure roller 33 accompanies the fully wound, reel 40 to the end. Prior to this, the initially acting tail spindles 23 are automatically exchanged or replaced by other corresponding tail spindles 37, which are also adjustable in their height and in the axial direction.

Finally, in order to eject the finished reel, the transportation roller 26 is designed so as to be substantially pivotable about the axis 38 of the other transportation roller 27-.

Arranged in the region of the tension measuring roller 15 is a fastening device in the form of an adhesive application device 39, which is preferably designed as an adhesive spray device with spinning spray application heads 41. With the aid of the adhesive application device, adhesive can be sprayed on to the material web 12 and is selectively used for adhering the remaining point to the wound reel after the cutting process, the cutting process taking place on the winding cores immediately after the adhesive passes the blade or, in the case of material webs 12 which are difficult to lay, simultaneously being used as a laying aid. In this case, the application of adhesive to the cut made by the blade 29 is timed in such a manner that, during the cutting, the application of adhesive to the start of the out is used to assist the laying of the material web on to the winding core 2 and the continuous adhesive on the remaining point of the material web 12 is used for bonding the end to the wound reel 40 by means of the transportation roller 27.

The double transportation roller winding machine according to this invention operates as follows:

The reel change, which is triggered by a length counter or by hand, is started in that the laying roller 19 with the transverse cutting device, i.e. the blade 32, is pivoted into the laying position shown in Figure 1. On-the other hand, the winding cores 2 are brought via the loading roller 7 according to the arrows shown in Figure 1 from the supply magazine 1 into the laying position between the transportation rollers 8 and 9, the laying roller 19, the loading roller 7 and the transportation roller 8 previously being accelerated from zero velocity to production velocity. Prior to the r - 16 inward pivoting of the loading roller 7, the winding cores are grasped and clamped by the tail spindles 23. Adhesive is sprayed on to the material web 12 by the adhesive application device 39, the application length being variable. Finally, the material web is cut obliquely by the blade 32 and is simultaneously laid once approximately one third of the adhesive application has passed the cutting edge of the blade. Consequently, one third of the adhesive is provided for adhering the remaining point to the wound reel and two thirds for adhering the material web to the new-winding core. The length of the adhesive application and the blade cutting velocity are adjustable and vary proportional to the material web velocity. A t a material web velocity of, for example, v max 400 m/min, the blade velocity is 28 m/sec and the point length approximately 1000 mm. By means of drives, not shown, the transportation rollers 26, 27 of the upper transportation roller pair 28 with the wound reel 40 arranged thereon are decelerated to zero velocity. In this respect, the remaining point is wound on and adhered to the wound reel. In the region of the fully wound reel 40, the upper tail spindles 37 and the pressure roller 33 move into an upper waiting position. The wound reel 40 is then pivoted outwards by the pivotally mounted transportation roller 26 and - 17 ejected into the hollow of a lift table, not shown, or received by a lifting device. The transportation roller 26 then swings back into its starting position and the pressure roller 33 lowers on to a lower stop, not shown, and once a certain reel diameter is reached, for example approximately 190 mm, takes over the supporting function of the contact rollers 7 and 19 which are firstly folded back and cease to be driven. Finally, the transportation rollers 26, 27 are accelerated to production velocity.

The reel 40' wound on the lower transportation rollers 8, 9 is then moved hydraulically or by a motor according to the stroke b into the region of the upper transportation rollers 26, 27 arranged at a greater distance from one another. This wound reel 40' is received in a smooth and impactfree manner by the transportation rollers 26, 27 after reaching a diameter of 250 mm for instance. After a diameter of 260 mm, for example, the winding station with the lower tail spindles 23 moves back into its starting position, the tail spindles 23 naturally being previously withdrawn from the winding cases and the upper tail spindles 37 having taken over the wound reel 40'. The upper tail spindles 37 take over the guidance until the reel 40 is fully wound. After transferring the reel 40' from the lower r 18 - transportation rollers 8, 9 to the upper transportation rollers 26, 27, the height adj us table device with the transportation rollers 8, 9 can be lowered into its starting position for a new change-over procedure. New winding cores are then loaded and guided by the loading device with the aid of the loading roller 7 and the guide plate 10. In this respect, the lower tail spindles 23 take over the winding cores 2 between the loading roller 7 and the transportation roller 8. In this position, the winding core 2 is accelerated from zero to material web velocity. The fixed but pivotable guide plate 10 prevents the winding cores from falling out during the acceleration and inward pivoting. As the loading roller 7 is pivoted inwards, the guide plate 10 is pivoted into its upper position and as the loading roller 7 is moved back is returned to its starting position.

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Claims

1. A double transportation roller winding machine for the axle-less winding of a web of material or a plurality of adjacent strips of material guided from below through the gap between a pair of transportation rollers on to one or more adjacent winding cores, comprising a fastening and cutting device, a loading device for new winding cores and an ejection device for fully wound reels, characterised in that the empty winding cores supplied to the transportation rollers from a feed magazine are supported by contact rollers acting upon generally opposite circumferential sides of the winding core or cores or initially wound reel or reels, the contact rollers being mounted together with the transportation rollers so as to be vertically adjustable along a substantially vertically extending guide device into the region of two transportation rollers of a second transportation roller pair used for finishing the winding of the reel or reels.

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2. A double transportation roller winding machine according to Claim 1, characterised in that the contact roller arranged on the side of the supply magazine forms the loading roller transferring the winding core or cores - to the transportation rollers and the contact roller arranged on the generally opposite side forms the laying roller applying the material web or strips to the winding core or cores.

3. A double transportation roller winding machine according to Claim 1 or 2, characterised in that the loading roller and the laying roller are driven and are mounted at the free ends of pivot arms which can be pivoted into an operative position effecting the guidance of the winding cores or initially wound reel and into an inoperative position.

4. A double transportation roller winding machine according to one or more of Claims 1 to 3, characterised by a height-adjustable pressure roller which is effective in the inoperative position of the loading and laying rollers.

5. A double transportation roller winding machine according to Claim 4, characterised in that the pressure roller is arranged at the free end of a substantially vertically downwardly pointing arm of an angle lever mounted in a height adjustable manner.

6. A double transportation roller winding machine according to any one of Claims 1 to 5, characterised in that a guide plate for the winding core is associated with the pivot arm of the loading roller or with said loading roller and a separate, fixed but pivotably mounted guide plate is provided.

7. A double transportation roller winding machine according to any one of Claims 1 to 6, characterised in, that a cutting device is arranged on the pivot arm of the laying roller with a blade which is movable transverse to the direction of movement of the material web and which cuts the material web on the winding core and is optionally supported by a spring.

8. A double transportation roller winding machine according to any one ofClaims 1 to 7, characterised in that an adhesive application device is provided as a fastening device and is preferably designed as an adhesive spray device comprising spinning spray application heads positioned in the region of a tension measuring roller.

9. A double transportation roller winding machine according to any one of Claims 1 to 8, characterised in that the transportation rollers of the lower transportation roller pair receiving the initially wound reel and the contact rollers with their pivot arms are arranged on a common height-adjustable component of the double transportation roller winding machine.

10. A double transportation roller winding machine according to any one of Claims 1 to 9, characterised in that the drivable transportation rollers of the upper r transportation roller pair receiving the unfinished reels have a larger diameter than the initially effective transportation rollers of the lower transportation roller pair.

11. A double transportation roller winding machine according to Claim 10, characterised in that the transportation rollers of the upper transportation roller pair are designed so as to be adjustable substantially in the horizontal plane transverse to their mounting axes.

12. A double transportation roller winding machine according to any one of Claims 1 to 11, characterised in that one transportation roller of the upper transportation roller pair is designed so as to be pivotable substantially about the axis of the associated - 23 second transportation roller in order to eject fully wound reels.

13. A double transportation roller winding machine according to any one of Claims 1 to 12, characterised by first tail spindles receiving the winding cores in the region of the initially effective transportation roller pair and second tail spindles in the region of the last effective transportation roller pair.

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14. A double transportation roller winding machine according to Claim 13, characterised in that the first and second tail spindles are each designed so as to be adjustable independently of one another substantially in the vertical direction in their height and in the direction of the axis of the winding cases, and the first tail spindles are also pivotable.

15.- A double transportation roller winding machine according to one or more of claims 1 to 14, characterised in that a feed magazine is formed by an inclined continuously moving conveyor belt with retaining elements attached thereto and having a substantially L-shaped cross section.

24 -

16. A double transportation roller winding machine constructed and arranged to function as described herein and exemplified with reference to the drawings.

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