AT508200A2 - ROLL CUTTING AND ROLLING ARRANGEMENT AND METHOD FOR THE OPERATION - Google Patents

Description

1 '4:: · · ·

Roll cutting and Aufrollanordnuna and method for their

Operate

The invention relates to a slitter and reel assembly for slitting a fibrous web into individual webs and for winding the individual webs into adjacent web rolls forming a set of web rolls, the device comprising: a pair of web roll support units adapted to support the set of web rolls in the take-up unit, a web roll pick-up unit serving to receive the set of web rolls from one of the web roll supports and to remove the set of web rolls from the roll cutting and reeling means, and a push unit adapted to simultaneously push all web rolls of the set of web rolls on the web roll acceptance device, according to the preamble of claim 1.

The invention also relates to a method of operating a roll cutting and reeling apparatus for longitudinally cutting a fibrous web into individual webs and for winding the individual webs into adjacent web rolls forming a set of web rolls, the method comprising the steps of: 2 ♦ ··· ···· ·· ··, • · · · · ·?

·· · ··

Rolling up a set of web rolls on a pair of web roll pad units, and

Removal of the set of web rolls to a web roll take-down unit upon completion of the roll-up of the set of web rolls by means of a push unit which simultaneously pushes all the rolls of the set of web rolls onto the web roll take-off unit according to the preamble of claim 7.

A web of full width in the cutting unit is longitudinally cut into individual webs by means of reel-cutting and reeling devices, and in the reeling unit the individual webs are rolled up into ready-to-use web rolls. In roll-on units, the individual webs are rolled on sleeves into fiber web rolls and the adjacent sleeves fixed by means of a sleeve locking device attached to both ends as a sleeve group. To roll up, twin roll rollers are used in the roll cutting and reeling device. Thus, the individual webs are on two carrier rollers and are rolled up over a located between a second carrier roll and a resulting fiber web roll gap to individual web rolls. As a backing roll, a belt assembly, i. a set of two guide rollers around the set of so-called belt rollers can be used. Also known are prior art slitter winder and retractors in which double roll retractors are used to roll individual webs after slitting a paper or board web. The present invention relates to double-roll type retractors in which the individual cut sheets are arranged around retracting axes, 3 ·· ·· ···· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · wound around sleeves, which rest on two rollers or on a roller and a set of rollers. In the following description and in the claims, the term carrier roll will be used for convenience in describing a carrier roll or a roll set of a carrier roll type retractor and shall include the meaning of both a backing roll and a set of belt rolls. In addition, in this specification, the term sleeve also means other types of roll-up tubes which are used in carrier-type retractors and which are suitable for this purpose.

When winding a fibrous web in the reel-up and reel-up, the reel change is an operation in web reel manufacture in which web rolls stop the fully wound reels before beginning to reel a new set, cut the web through the reel unit, and remove the set of fully wound reels to start rewinding a new set of individual web rolls after inserting new sleeves. At present, in practice, the replacement time for mechanical equipment is approximately 30 to 70 seconds from start to restart.

Before the web rolls can be removed, the ends of the individual webs must be attached to the roll. In WO 2007/060293 A2, an arrangement is shown in which the thrust unit is arranged so that an adhered to the roll end of the web is quickly wound by a targeted pushing movement of the thrust unit on the surface of the web roll, so that the web roll contact with the Sliding unit can not lose. 4 ♦ «·· ···· ·· ·· · · · · · · ·

Particularly in twin-roll reeling units, the adjacent web rolls are simultaneously removed from the reeling unit by means of a pushing unit and conveyed either to a tilting unit or a take-off plate and further to a roller conveyor belt. For twin-roll rewind units, the web rolls are so close together that the distance between them must be increased before they are removed from the roll-up unit.

From the prior art it is known to separate the adjacent web rolls using a tilting unit in which the first plane, i. the plane on which the web rolls are removed from the take-up unit is crosswise convex, so that the web roll lying on the plane has a gap at its upper edge. If the tilting unit is tilted and the web rolls thereby reach the second level of the unit, they assume a fan-like orientation on the plane. On leaving the tilting unit, each web roll rolls on the treadmill in a slightly different direction, and there is a gap between the web rolls on the treadmill. Such an arrangement is e.g. in DE 102004038498 Al and Fl 108852 Bl.

When using a pick plate on which the web rolls are simply kicked to roll over the inclined pick plate to the treadmill, the above-described method of separating the web rolls that can be applied to the tilting unit can not be used.

It is known to use a separate protruding projection, e.g. is arranged on the ground in the path of the track rollers removed from the take-up unit. This is based on the idea that the direction of travel of the web rolls is changed while they roll over the projection. Since the web rolls essentially roll freely, the desired separation of the web rolls is not always achieved.

An object of the invention is to provide a slitter-winder and retractor and a method of winding a fibrous web in which the problems and disadvantages described above have been eliminated or at least minimized.

The object of the invention is essentially achieved by a slitter-winder for longitudinally slitting a fibrous web into individual webs and rolling up the individual webs into a set of adjacent web rolls comprising a pair of web-roll support units such as a carrier roll or one-pack assembly Belt rollers holding the set of web rolls in the take-up unit, a web roll take-down unit for picking up the set of web rolls from one of the web roll support units and for transporting the set of web rolls away from the roll cutting and reeling device and a push unit for simultaneously pushing all web rolls of the set of web rolls on the web roll acceptance unit comprises. Characteristic of the invention is that the web roll removal unit is equipped with a first part that runs vertically above a web roll support unit, that the push unit is arranged so that its push movement for removing the web rolls has an end position at least at one position, at which the contact point of the set web rolls has exceeded a vertex of the first part, and that the web roll acceptance unit and the pusher unit are arranged so that ·· ·· »· · · · ·. As a result of their interaction, a longitudinal spacing between the web rolls increases with one another becomes.

According to one embodiment of the invention, the first part of the web roll acceptance unit is provided with means for increasing a longitudinal distance of the web rolls from each other. According to one embodiment of the invention, the means for increasing a longitudinal distance between the web rolls comprises an arcuate surface which is provided together with the take-off unit. According to another embodiment of the invention, the means for increasing a longitudinal distance between the web rolls comprises a wedge projecting from the surface of the web roll accepting unit.

According to another embodiment of the invention, the pusher unit is provided with an arcuate outer surface, so that it changes the direction of the web rolls during the pushing movement.

According to another embodiment of the invention, the first part of the web roll acceptance unit is generally inclined upwardly, and the web roll acceptance unit comprises a second part, which is generally preferably inclined downwards.

The object of the invention is also essentially achieved by a method for the practical use of a roll cutting and reeling device for longitudinally cutting a fiber web into individual webs and for rolling up the individual webs to adjacent web rolls forming a set of web rolls, the method comprising the step of Rolling up a set of web rolls on a pair of web rolls • · 7

It • • • • • • • ········································································································ ····································

Support units and upon completion of the rolling up of the set of web rolls comprises the step of removing the set of web rolls onto a web roll acceptance unit by means of a push unit which pushes all web rolls of the set of web rolls simultaneously onto the web roll acceptance unit. Characteristic of the invention is that the longitudinal spacing of the web rolls is increased among each other during the movement of the set of web rolls for web roll removal unit and thus during the removal of the set web rolls.

According to one embodiment of the invention, the longitudinal distance between the web rolls is increased by pushing the set of web rolls over an arcuate surface provided in connection with the take-down unit.

According to another embodiment, the longitudinal distance between the web rolls is increased by the pushing of the set of web rolls by means of the push unit in diverging directions.

According to yet another embodiment of the invention, the longitudinal spacing between the web rolls is increased by sliding the set of web rolls over an arcuate surface provided in connection with the take-down unit and pushing the set of web rolls through the push unit in diverging directions.

Further characterizing features of the invention are set forth in the appended claims and in the description of the drawings. 8th • · · · · ·

In the following, the invention as well as its practical use will be described with reference to the attached schematic drawings, in which:

Fig. 1 shows a Rollenschneide- and retractor according to an embodiment of the invention,

FIG. 2 shows the roll cutting and reeling device of FIG. 1 in plan view, FIG.

Fig. 3 shows a Rollenschneide- and retractor according to another embodiment of the invention, and

Fig. 4 shows a Rollenschneide- and retractor according to another embodiment of the invention.

Fig. 1 shows a Rollenschneide- and retractor 10, which has a double-roll retractor 12 and arranged in front of this roller cutter 14. In the roll-cutting and reeling apparatus 10, the fibrous web W is cut lengthwise into individual parallel webs W 'which are rolled up in the retractor onto a row of juxtaposed rolls 20. The twin-roll retractor 12 comprises two support rollers or a support roller 16 and a series of belt rollers 18, wherein an endless loop of one or more belts is wound around two rollers as in the embodiment shown in FIG. In conjunction with this description, the carrier rolls may also be generally referred to as roll holders. The longitudinally juxtaposed web rolls are supported by the support roll 16 and the underlying row of belt rolls 18 and a pressure unit above the web roll 20. 9 1 9 1 • • • • • • • • • • • • • • • • • • • ···

In this specification, the individual webs rolled up on the retractor and the formed web rolls may be referred to either singly or plural depending on the context, but mean all the individual webs and web rolls used in the retractor. It should also be noted that in the longitudinal direction of the set of rollers used in this description, essentially the transverse direction of the retractor 12 itself is to be understood.

The slitter-winder 10 is provided with a web roll removal unit 24, with which the finished rolls 20 are conveyed from the retractor 12, for example, to a roller conveyor belt 26. In Fig. 1, the web roll acceptance unit 24 is constituted by a so-called acceptance plate fixedly mounted at a location between the front roller (here, belt roller) 18 of the retractor and the floor adjacent to the treadmill.

The displacement or removal of the rollers 20 from the retractor to the web roll removal unit 24 is accomplished using a pusher unit 28 disposed in connection with the retractor 12. The pusher unit 28 preferably consists of a bar or a roller or the like which extends in the longitudinal direction of the set of web rolls or in the transverse direction of the retractor over the entire set of web rolls 20, so that all the rolls of the set travel substantially simultaneously onto the web roll accepting unit 24 can be pushed or pushed. The set of web rolls 20 is moved over one of the support units 16, 18, in this case, in particular, by the belt roll assembly of Fig. 1. 10

The position 20.1 of the set of web rolls 20 is the first position of the acceptance phase in the reeling process. The rollers 20 have their final, i. set, diameter reached and are ready for acceptance. The pressure unit 22 is lifted from the roll, the push unit 28 is brought to the second position 28.2 and pushes the roller 20 also in the second position 20.2, in which the role no longer from the support unit (belt roller) 18, but by the acceptance unit 24th will be carried. The web roll removal unit 24 is equipped with a first part 30 which extends vertically above one of the web roll support units 16, 18, in particular the support unit 18, over which the web roll 20 is removed. This height difference is indicated in FIG. 1 by the reference numeral 32. In practice, the first part comprises a generally ascending portion of length L. The pusher unit 28 is movably arranged to move the set of web rolls 20 from the first position 20.1 at least to a third position 20.3 in which the point of contact of the webbing 20 Set web rolls on the surface of the acceptance unit has exceeded a vertex 30 'of the first part 30 of the web roll acceptance unit 24. Thus, the thrust unit 28 assumes an end position 28.3 in the pushing movement to remove the web roll, in which the web roll is at least in the third position 20.3. While the web rolls 20 are being rolled over the first part of the web roll acceptance unit 24, they are still being supported by the push unit 28. During the removal movement of the rollers 20 over the first part of the web roll acceptance unit, the interaction between the web roll acceptance unit 24 and the push unit 28 increases the longitudinal spacing of the web rolls 20 with one another. Preferably, the pusher unit is arranged so that the contact point of the roller 20 has exceeded the first part of the web roll acceptance unit 24 at the end point of the pushing movement for removing the web rolls and is located on the second part of the web roll acceptance unit 24. The second part of the web roll removal unit 24 is preferably inclined slightly downwards in the direction of the roller conveyor belt 26.

This is done while the set of web rolls is pushed onto the web roll removal unit 24 and the web rolls are still supported against the rising first part of the web roll acceptance unit.

To separate the web rolls from each other, i. To increase the longitudinal spacing of the web rolls 20 with each other in the embodiment of Fig. 1, the first part 30 of the acceptance unit 24 is provided with a means 34 for increasing the LängsabStandes of the web rolls with each other.

According to one embodiment of Fig. 1, the means 34 for increasing a longitudinal distance of the web rolls with one another from the surface of the web roll decrease unit protruding wedge 34 which changes the direction horizontally substantially so that the web rolls during their removal from the retractor from each other be separated. The acceptance unit 24 is equipped with a wedge 34 protruding from its surface as mentioned above.

Fig. 2 shows the Rollenschneide- and retractor 12 of FIG. 1 in plan view and represents the increase in the longitudinal distance D of the web rolls 20 with each other, while the set of web rolls under displacement on the web roll removal unit 24 is removed. From Fig. 2 it can be seen that the means for increasing a longitudinal distance of the web rolls, in this case the wedge 34, an arcuate surface of the acceptance unit 24 comprises. The web rolls are rotated in a substantially horizontal plane as they are pushed by the pusher unit 28 onto the rising first part 30 of the take-down unit 24 over the wedge 34 located on the part 30.

The take-off unit 24 has a vertex 30 'and the pusher unit 28 is arranged so that its movement to take off the web rolls, at least in a position 20.3, has an end position in which the support point of the set of web rolls has exceeded a vertex of the first part and the web rolls begin to roll down on the downwardly inclined second part of the acceptance unit 24.

In the embodiment shown in FIG. 2, the pusher unit 28 is slightly bent so that it is arcuate with respect to the wedge 34. Thereby, along with the arcuate surface in the acceptance unit, fan-shaped diverging paths 36 for the set of web rolls 20 are generated. A corresponding effect can be achieved not only by a curved, but also by a convex outer surface.

Fig. 3 shows an embodiment of the invention, which corresponds to that of Fig. 1 and is changed in that the acceptance unit 24, which is a decrease plate in Fig. 1, is replaced by a tilting unit 24. The tilting unit 24 in FIG. 3, however, is equipped with a first part, which in the vertical direction above the

A web roll supporting unit stands when the tilting unit is in a position to receive a web roll, i. in Fig. 3 in the upper position, is located.

Fig. 4 shows still another embodiment of the first part of the acceptance unit 24 according to the invention. Fig. 4A shows a side view of the removal unit 24 mounted together with the retractor 12, and Fig. 4B shows a schematic representation of the first part 30 of the removal unit 24 of Fig. 4A. In this case, the means 34 for increasing the longitudinal spacing of the web rolls from each other comprises an arcuate vertical surface formed in the take-off unit 24. The shape of the surface can be easily generated by bending the plate constituting the first part of the detaching unit 24. As the web rolls 20 roll over the first part, they conform to the shape of the support surface and assume a slight incline, so that their longitudinal spacing with each other due to the support surface is first increased at their lower parts. When the web rolls are slid over the first part to the second part of the take-off unit 24, which is preferably substantially planar, they diverge.

It should be noted that in the above description only a few particularly advantageous embodiments of the invention will be described. It is therefore to be understood that the invention is not limited to the embodiments described above, but can be realized in many ways within the scope of the appended claims. The features described in connection with the various embodiments may equally well be used in conjunction with other embodiments and / or various combinations of the invention. ·· ··· ·· features described can be created within the scope of the basic idea of the invention, if desired and if the technical feasibility is given for this purpose.

claims:

Claims (9)

15 • ······················································································································································································································ POTH Patentanwälte OEG Dorotheergasse 7 - A-1010 Vienna - patent@aon.at Tel: +43 (1) 512 10 98 - Fax: +43 (1) 513 47 76 Claims 1. Roll cutting and Aufrollanordnung (10) for slitting a Fiber web (W) into individual webs (W ') and for winding the individual webs into a set of adjacent web rolls (20), the roll cutting and reeling device comprising: a pair of web roll support units (16, 18) arranged so in that they support the set of web rolls (20) in the retractor (10), a web roll removal unit (24) arranged to receive the set of web rolls from one of the web roll support units and from the roll cutting and reeling device (10). 12), a pusher unit (28) arranged to simultaneously push all the web rolls of the set of web rolls onto the web roll take-off unit, characterized in that the web roll take-down unit (24) is provided with a first Part is arranged vertically above one of the web-roll support units, and that the thrust unit (28) is arranged so that its thrust movement for depositing the web rolls has an end position at least in a position (20.3), in which the support point of the set web rolls (20) has exceeded a vertex of the first part (30), and that the web roll removal unit (24) and the pusher unit (28) are arranged to co-operate by increasing a longitudinal distance of the web rolls (20) from each other. A roll cutting and reeling assembly according to claim 1, characterized in that the first part of the web roll pickup unit (24) is provided with means for increasing a longitudinal spacing of the web rolls with each other. 3. slitter reeling and Aufrollanordnung according to claim 1, characterized in that the thrust unit (28) is provided with an arcuate Außenf surface, so that it changes the direction of the web rolls (20) during the pushing movement. A slitter and reel assembly according to claim 2, characterized in that the means (34) for increasing a longitudinal distance between the web rolls comprises an arcuate surface provided in connection with the take-off unit. A winder and reel assembly according to claim 2 or 4, characterized in that the means (34) for increasing a longitudinal distance between the web rolls comprises a wedge projecting from the surface of the web roll accepting unit (24). • • • • • • • • • • • • • • • • • • • • • 17 • · · A roll cutting and reeling assembly according to claim 1, characterized in that the first part is generally inclined upwards. A method of operating a roll cutting and reeling assembly (10) for cutting a fibrous web (W) into individual webs (W ') and rolling the individual webs into adjacent web rolls forming a set of web rolls (20), the method comprising the steps of: rolling up a set of web rolls on a pair of web roll support units (16, 18), removing the set of web rolls (20) onto a web roll removal unit (24) upon completion of the rolling up of the set web rolls by means of a push unit (28) which simultaneously pushes all the rolls of the set of web rolls onto the web roll take-off unit, characterized in that the longitudinal spacing (D) of the web rolls increases with each other during the pushing of the set of web rolls onto the web roll removal unit (24) and thus during the removal of the set of web rolls becomes. 8. A method of operating a slitter and reel assembly according to claim 7, characterized in that the longitudinal distance (D) between the web rolls is increased by pushing the set of web rolls over an arcuate surface provided in connection with the take-down unit (24). 18 18 .. * • · • · • · 9. A method of operating a Rollenschneide- and Aufrollanordnung according to claim 7, characterized in that the longitudinal distance between the web rolls by sliding the set of web rolls by means of the thrust unit (28) in diverging directions is increased. The patent attorney: P Ο T H t e Ο E G Vienna - patent@aon.at 512 10 98 - Fax: +43 (1) 513 47 76