Device for winding and changing the reels of web material as well as a dedicated process

Abstract

A device for winding and changing reels of web material includes two independently operable central drives for shifting winding shafts, a drivable winding shaft guide, a contact roller unit and slitting units. Both right-hand winding and left-hand winding are realized, whereby the device is without a prewinding station. For a winding shaft change, the drivable winding shaft guide is driven from the winding position into the parking position and is disconnected. Subsequently, the second central drive is connected to the winding shaft guide and is driven from its parking position into the winding position where the second central drive is connected with a new winding shaft. The contact roller unit is driven against the winding shaft and the web material is cut through by a slitting device and then wound to a new reel.

Claims

1. A device for winding and changing reels of a web material, the device comprising a machine housing with rails, first and second central drives, the first and second central drives independently operable to drive a winding shaft, a drivable winding shaft guide which travels on the rails and interacts in each case with one of the first and second central drives and which drives these on the rails between a parking position and a winding position, a contact roller unit which interacts with the winding shaft in the winding position driven by the respective central drive, slitting units to cut through the web material, winding shaft transport units to feed a new winding shaft for a winding shaft change, and a reel removal device, wherein for a winding shaft change, the drivable winding shaft guide together with the first central drive, which drives a finished reel onto the winding shaft, is drivable from the winding position into the parking position, wherein the first central drive is disconnectable from the drivable winding shaft guide and connected to the parking position, wherein the second central drive is connectable to the drivable winding shaft guide and is drivable driven from the parking position into the winding position where the second central drive is connectable to the new winding shaft and is drivable, wherein the contact roller unit is drivable towards the new winding shaft and interacts with the new winding shaft, and wherein the web material is cut off by the slitting device and can be wound up to a new reel.

2. The device of claim 1, wherein the new winding shaft can be transported from below for right-hand winding of the web material by one of the winding shaft transport units into the winding position.

3. The device of claim 1, wherein the new winding shaft can be transported from above for left-hand winding of the web material by one of the winding shaft transport units into the winding position.

4. The device of claim 1, wherein the slitting units are located above and below the winding position of the winding shaft and are able to raise, lower and cut the web material.

5. The device of claim 4, wherein in the case of right-hand winding, the web material can be raised and cut through by the bottom slitting unit.

6. The device of claim 4, wherein in the case of left-hand winding, the web material can be pressed downwards by the top slitting unit and can then be cut through by the bottom slitting unit.

7. The device of claim 1, wherein the web material constitutes film webs, composite film webs or tubular film.

8. A method for winding and changing the reels of web material, the method comprising: winding the web material onto a first winding shaft which is driven by a first central drive, whereby the first central drive interacts with a driven winding shaft guide, whereby for winding a reel, the winding shaft interacts with a contact roller unit (9), and changing the reels of the web material, wherein changing the reels comprises: a finished reel, which is driven by the first central drive, is shifted by the drivable winding shaft guide from a winding position into a parking position, disconnecting the first central drive from the drivable winding shaft guide and connecting in the parking position, whereby the central drive continues to rotate the reel, connecting the drivable winding shaft guide with a second central drive and shifting the second central drive from the parking position into the winding position, connecting the second central drive with a new winding shaft and actuating the new winding shaft, shifting the contact roller unit towards the new winding shaft, cutting the web material with slitting units and winding a new reel, and removing the new reel by means of a reel removal system.

9. The method of claim 8, wherein the new winding shaft is transported from below for right-hand winding of the web material by a winding shaft transport unit into the winding position.

10. The method of claim 8, wherein the new winding shaft is transported from above for left-hand winding of the web material by a winding shaft transport unit into the winding position.

11. The method of claim 8, wherein for left-hand winding of the web material, one of the slitting units is located above the winding position and swivels into the web material and presses the web material downwards, the winding shaft is moved into the winding position, the contact roller unit is moved into the winding position and the top slitting device swivels back, then a bottom slitting device swivels into the web material and cuts through the web.

12. The method of claim 8, wherein for right-hand winding of the web material, one of the slitting units is located underneath the winding position and swivels into the web material and raises the web material, the winding shaft is moved into the winding position, the contact roller unit is moved into the winding position and a bottom slitting device swivels into a cutting position and cuts through the web.

13. The method of claim 8, wherein the web material constitutes film webs, composite film webs or tubular film.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) A more complete appreciation of the invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein:

(2) FIG. 1: shows a side view of the invention-design winder.

(3) FIG. 2: shows a side view of the winder during a reel change for the case of right-hand winding.

(4) FIG. 3: shows a side view of the winder during a reel change for the case of left-hand winding.

DETAILED DESCRIPTION

(5) In FIG. 1, a preferred embodiment of the invention-design winder (1) for winding film webs—especially tubular film—and for changing the film reels is shown.

(6) The winder (1) has a machine housing (2). In one section of the winder (1) are on each side of the outside of the machine housing (2) a first central drive (3) and a second central drive (4) located on rails (5). On the same level on the inside of the machine housing (2) is a driven winding shaft guide (6). It interacts together with the central drives (3) or (4) and travels on the horizontal rails (5) forwards and backwards. The central drives (3) and (4) are connected to the winding shafts.

(7) On one side of the rails (5)—on the right-hand side of FIG. 1—is a reel removal device (14), whereas on the other side of the rails (5)—on the left-hand side of FIG. 1—is a vertical winding shaft transport unit (8) and a contact roller unit (9). Above and parallel to the rails (5) is a support (13) for the winding shafts.

(8) Below this subassembly is a horizontal winding shaft transport unit (7) which connects to the new winding shafts and transports them below the drivable winding shaft guide (6) towards a second vertical winding shaft transport unit (8) which transports them upwards towards the winding position. The vertical winding shaft transport unit (8) can also take up new winding shafts from above and transport them downwards towards the winding position if the reel is to be wound in the opposite winding direction.

(9) A contact roller unit (9) is located in a second section of the machine housing (2) (left in FIG. 1) on the same level as the rails (5). It interacts with the winding shaft (15) and the reel (17) being generated. In this case, for example, its actuation is pneumatic. A deflection roller (10) is located downstream. Below and above the contact roller unit (9) or the winding level is a slitting device (11, 12) in each case. They have the function of raising, lowering or cutting the film web.

(10) The hydraulic reel removal device (14) is located at the end of the rails (5) (on the right in FIG. 1) on the opposite side of the machine frame (2) which accommodates the contact roller unit (9).

(11) Using FIG. 1 by way of explanation, the winding of a film web is described. The winding shaft (15) is connected to a first central drive (3) located at the outside wall of the machine housing (2) and to the driven winding shaft guide (6) located on the inside of the machine housing (2). This first central drive (3) winds the film web (16) in the winding position (WP), the film web being routed via the deflection roller (10) into the winder (1). The contact roller unit (9) thereby presses against the winding shaft (15) or the reel (17). As the diameter of the reel (17) increases, it moves together with the drivable winding shaft guide (6) and the first central drive (3) towards the reel removal unit (14). The winding shaft thereby lies flush on a support (13) located on both sides of the machine housing (2).

(12) Once the reel (17) has reached its target diameter, the reel change is prepared.

(13) Using FIG. 2 by way of explanation, the reel change for right-hand winding is described. To this end, a new winding shaft (18) is inserted into the horizontal winding shaft transport unit (7) located at the bottom and is transported towards the vertical winding shaft transport unit (8), is transferred to same and is then moved upwards into parking position 1 (PP1). The first central drive (3) and the drivable winding shaft guide (6) move the finished reel (17) towards the lowering arms (19) of the reel removal unit (14). The second central drive (4) is in its parking position (PP) (not shown here).

(14) The contact roller unit (9) is now shifted horizontally away from the reel (17) (to the left in FIG. 2) and its winding position. The new winding shaft (18) is moved from parking position 1 (PP1) further upwards into the parking position 2 (PP2). The first central drive (3) of the finished reel (17) disconnects from the drivable winding shaft guide (6) and connects to its parking position PP on the outside of the machine housing wall (2), at the same time continuing to rotate the reel (17). Some of these steps take place simultaneously. The second central drive (4) disconnects from its parking position (PP) at the machine housing wall (2) and connects up to the drivable winding shaft guide (6) and travels towards the contact roller unit into a winding start position (cf. FIG. 1). The bottom slitting device (12) is swivelled into the film web (16) and raises it so that the new winding shaft (18) can be moved from the parking position 2 (PP2) into the winding start position. The drivable winding shaft guide (6) now moves with the second central drive (4) into the winding start position in which the new winding shaft (18) is located, and the second central drive (4) connects up to the winding shaft (18) and actuates it.

(15) The hook (20) of the vertical winding shaft transport unit moves downwards. The drivable winding shaft guide and the second central drive as well as the winding shaft now move into the winding position (WP). The bottom slitting device (12) swivels into the cutting position. The contact roller unit (9) moves up to the new winding shaft (18). The film web (16) is cut and the bottom slitting device (12) swivels back. The new reel is generated. These steps take place within a short period of time or even simultaneously.

(16) The finished reel (17) can now be removed from the winder (1) by the reel removal device (14).

(17) The reel change for left-hand winding is now described with the help of FIG. 3. It is assumed that the reel (17) currently being wound in the winder (1) is being wound with the first central drive (3).

(18) For the left-hand winding of film webs, the new winding shaft (18) is inserted from above into the vertical winding shaft transport unit (8) and is driven into parking position 1 (PP1) above the winding level. The first central drive (3) and the drivable winding shaft guide (6) move the finished reel (17) to the lowering arms (19) of the reel removal unit (14). The second central drive (4) is in its parking position PP. The contact roller unit (9) is now shifted away from the reel (17) (to the left in FIG. 1) and out of its winding position. The new winding shaft (18) is moved from parking position 1 (PP1) further towards the winding level into its parking position 2 (PP2). The first central drive (3) of the finished reel (17) disconnects from the drivable winding shaft guide (6) and connects up to its parking position (PP) at the outside of the machine housing wall (2). Some of these steps take place simultaneously. The second central drive (4) on the opposite side disconnects from its parking position (PP) at the machine housing wall (2) and connects up to the drivable winding shaft guide (6), and both are shifted towards the contact roller unit (9) into the winding start position (cf. FIG. 3). The top slitting device (11) is swivelled into the film web (16) and presses the film web (16) downwards so that the new winding shaft (18) can be moved from parking position 2 (PP2) into the winding start position. The drivable winding shaft guide (6) now moves with the second central drive (4) into the winding start position in which the new winding shaft (18) is located, and the second central drive (4) connects up to the winding shaft (18) and actuates it.

(19) The hook (20) of the vertical winding shaft transport unit (8) moves downwards. The drivable winding shaft guide, the second central drive as well as the new winding shaft now move into the winding position (WP). The top slitting device (11) swivels back. The bottom slitting device (12) swivels upwards into the cutting position. The contact roller unit (9) moves up to the new winding shaft (18). The film web (16) is cut and the bottom slitting device (12) swivels back. These steps take place within a short period of time or even simultaneously.

(20) The new reel is generated. The finished reel (17) can now be removed from the winder (1) by the reel removal device (14).

LEGEND

(21) 1 Winder

(22) 2 Machine housing

(23) 3, 4 Central drives

(24) 5 Rails

(25) 6 Drivable winding shaft guide

(26) 7 Horizontal winding shaft transport unit

(27) 8 Vertical winding shaft transport unit

(28) 9 Contact roller unit

(29) 10 Deflection roller

(30) 11, 12 Lifting and cutting device

(31) 13 Support

(32) 14 Hydraulic reel removal device

(33) 15 Winding shaft

(34) 16 Film web/web material

(35) 17 Reel

(36) 18 New winding shaft

(37) 19 Lowering arms

(38) 20 Hook

(39) PP Parking position

(40) PP 1 Parking position 1

(41) PP 2 Parking position 2

(42) WP Winding position