DE102005011240A1 - Unwrapping rolls of printing paper comprises cutting off end wrapping, applying cutter with suction system to circumferential wrapping, so that it is sucked upwards, cutting wrapping axially, unwinding paper and cutting wrapping off - Google Patents

Abstract

The The invention relates to a method for unpacking a printing paper roll, with at least the following steps: a) From a packaged printing paper roll (10) front cover packages of an outer packaging are removed; b) subsequently a first cutter (15) is provided with the one of the end cover packages liberated printing paper roll (10) is engaged, wherein the first cutting device (15) has a peripheral packaging (12) of the printing paper roll forming a local bulge (18) and thus a distance between the peripheral packaging (12) and sucking the printing paper roll (10); c) then the peripheral packaging (12) in the area of the bulge (18) cut through in the axial direction of the printing paper roll throughout; d) the severed as well as still bonded to the printing material web Circumferential packaging (12) is made using the first cutter (15) unwound from the printing paper roll; e) subsequently, via a second cutting device, the peripheral packaging (12) of the printing material web separated and a free end of the printing material is on a Outer surface of the Fixed paper roll.

Description

The The invention relates to a method for unpacking a printing paper roll.

At Web-fed rotary presses are printed on a web-shaped substrate, which is kept in the form of printing paper rolls. The printing paper rolls are stored in a paper warehouse in a packaged condition and must be prepared introduction the same in a roll changer of the web-fed rotary printing press be unpacked or unpacked, the same subsequently unpacking by a splice preparation for one automatic roll change are prepared. When unpacking the Printing paper rolls is done according to the prior art, that first the so-called front lid packaging from the front pages the printing paper roll are removed, that is the so-called peripheral packaging is separated, and then that the separated perimeter of the printing paper roll is removed. As a separate step is decoupled from the prior art then unpacking the Printing paper rolls performed the splice preparation. Out the prior art, it is already known, the workflows in the Unpack a printing paper roll as far as possible to automate. Many work steps have to however, still be done manually, so for example the manual separation of the peripheral packaging. According to the state of Therefore, technology is a variety for unpacking a printing paper roll manual work steps required. This results on the one hand long unpacking times and on the other hand this is manual unpacking of printing paper rolls as a result of staffing expensive.

Of these, Based on the present invention, the problem is based to provide a novel method for unpacking a printing paper roll.

This Problem is solved by a method for unpacking a printing paper roll according to claim 1 solved. The inventive method includes at least the following steps: a) from a packaged Printing paper roll become end-cap packaging of an outer packaging away; b) subsequently is a first cutter with that of the front cover packaging liberated printing paper roll engaged, the first Cutting device a peripheral packaging of the printing paper roll below Formation of a local bulge and thus a distance between the peripheral packaging and the Aspirates paper roll; c) then the peripheral packaging in the area the bulge severed continuously in the axial direction of the printing paper roll; d) the severed as well as still bonded to the substrate web peripheral packaging is unwound from the printing paper roll using the first cutter; e) subsequently will over a second cutting device, the peripheral packaging of the printing material web separated and a free end of the printing material is on a Outer surface of the printing paper roll fixed.

The Invention allows a simple, automated and highly accurate removal of the Peripheral packaging of printing paper rolls. The one to unpack a Paper roll needed Unpacking time is opposite significantly reduced in the prior art.

To an advantageous development of the present invention the second cutting device fixes the free end of the printing material web on the outside surface of the Printing paper roll with simultaneous execution of the splice preparation to prepare the printing paper roll for an automatic roll change. By including the splice preparation in the unpacking process can the effectiveness across from be increased again in the prior art. On one after the Prior art required separate splice preparation station can be dispensed with.

Preferably is the perimeter packaging over two spaced, integrated into the first cutter Suction sucked, wherein after cutting the peripheral packaging and before unwinding the perimeter package from the printing paper roll one of the two suction devices the severed peripheral packaging releases, whereas the other of the two suction devices the severed circumferential packaging still fixed. The peripheral packaging is sucked in a section and severed, the in the circumferential direction the printing paper roll seen immediately to the side of a splice which adheres the peripheral packaging to the printing material web, being on the opposite Side of this splice a splice of peripheral packaging lies.

preferred Further developments of the invention will become apparent from the dependent claims and the following description. Embodiments of the invention without being limited to this to be closer to the drawing explained. Showing:

1 : a highly schematic cross-section through a packaged printing paper roll;

2 a printing paper roll together with a first cutting device in a first position to illustrate the method according to the invention for unpacking a printing paper roll;

3 : the arrangement of 2 in a second position for further clarification of the method according to the invention;

4 : the arrangement of 2 and 3 in a third position for further clarification of the method according to the invention;

5 : the arrangement of 2 to 4 in a fourth position for further clarification of the method according to the invention;

6 : the arrangement of 2 to 5 in a fifth position for further clarification of the method according to the invention;

7 : the arrangement of 2 to 6 together with a second cutting device for further clarification of the method according to the invention;

8th : the first cutting device in a further position for further clarification of the method according to the invention; and

9 : the first cutter in an alternative position to 8th ,

Hereinafter, the present invention will be described with reference to FIG 1 to 9 described in more detail.

The invention relates to a method for unpacking a printing paper roll or for removing an outer packaging from a printing paper roll. 1 shows a highly schematic cross section through a printing paper roll 10 that from an outer packaging 11 is surrounded, due to the cut in 1 only a so-called peripheral packaging 12 the outer packaging 11 is apparent. In the area of non-illustrated end faces of the printing paper roll has the outer packaging 11 about so-called front lid packaging. The peripheral packaging 12 is according to 1 under formation of a first splice 13 glued to an outer layer of the printing substrate. In the area of another splice 14 is the perimeter packaging 12 for fixing the same in the region of overlapping ends of the peripheral packaging 12 glued to itself.

To unpack the printing paper roll 10 First, the non-illustrated end cover packaging of the outer packaging 11 from the printing paper roll 10 away. Subsequently, the freed from the end cover packaging printing paper roll 10 a first cutting device 15 (please refer 2 and 3 ) on the peripheral packaging 12 brought to the plant. This is done by the first cutter 15 in the sense of the arrow 16 to the printing paper roll 10 or the peripheral packaging 12 is hired.

The first cutting device 15 comes here at a section 17 (please refer 1 ) of the peripheral packaging 12 to the plant, seen in the circumferential direction of the printing paper roll immediately laterally adjacent to the splice 13 is located, which adheres the peripheral packaging with the printing substrate. On the opposite side of this splice 13 is the splice 14 positioned, which adheres the overlapping ends of the peripheral packaging with itself.

After starting the first cutting device 15 to the peripheral packaging 12 is about the first cutter 15 the peripheral packaging 12 the printing paper roll to form a local bulge 18 (please refer 4 sucked). In the area of the bulge 18 becomes a distance between the perimeter packaging 12 and the printing paper roll 10 established. To aspirate the peripheral packaging 12 in the section 17 are in the first cutter 15 two spaced suction devices 19 and 20 integrated. The suction devices 19 and 20 are preferably designed as suction.

After aspirating the peripheral packaging 12 and thus after the formation of the bulge 18 in the section 17 the peripheral packaging 12 becomes the perimeter packaging 12 in the area of the bulge 18 cut through in the axial direction of the printing paper roll through, using one in the first cutter 15 integrated knife 21 , 5 shows that in the area of the suction devices 19 and 20 fixed and from the knife 21 severed perimeter packaging 12 the printing paper roll 10 ,

After cutting the peripheral packaging 12 will be over the splice 13 bonded with the substrate web peripheral packaging 12 using the first cutter 15 from the printing paper roll 10 settled. In accordance with 6 a suction device 20 the severed peripheral packaging 12 free, whereas the other suction device 19 the severed peripheral packaging 12 still fixed.

When unwinding the severed peripheral packaging 12 from the printing paper roll 10 will the Printing paper roll 10 according to 7 in the sense of the arrow 22 and the first cutter 15 in the sense of the arrow 23 driven in rotation, in which case from the printing paper roll 10 withdrawn peripheral packaging 12 on the first cutter 15 is wound up.

When unwinding the severed peripheral packaging 12 from the printing paper roll 10 is according to 7 the unwinding of the peripheral packaging 12 from a second cutter 24 monitored, wherein the second cutting device 24 then, if the same a transition area between the peripheral packaging 12 and the printing material web of the printing paper roll 10 detected, the perimeter packaging 12 with as little waste of the printing material separates from the same. For this purpose, the in 7 illustrated second cutting device 24 to the printing substrate 12 hired.

Following the separation of the peripheral packaging 12 from the printing material web of the printing paper roll 10 a free end of the printing material web is fixed on the outer surface of the printing paper roll. For this purpose, in the second cutting device 24 a suction device integrated, after the separation of the peripheral packaging 12 holds or grips the free end of the printing material from the printing material web and an adhesive application on the outer surface of the printing paper roll 10 fixed.

To a particularly advantageous development of the present here Invention is combined with the fixation of the free end of the printing material web on the outside surface of the Printing paper roll the splice preparation performed to to adapt the paper roll to an automatic roll change. In this case, the splice preparation is in the unpacking process integrated into the printing paper roll, resulting in a very efficient Roll handling can be realized.

The of the printing paper roll 10 unwound and on the first cutter 15 wrapped peripheral packaging 12 is in a disposal container 25 disposed of. This can, as 8th shows the first cutter 15 with the wound on the same peripheral packaging over the disposal container 25 be positioned, wherein the wound peripheral packaging via a separate cutting blade 26 severed and so from the first cutter 15 Will get removed. Alternatively, it is also possible, like 9 shows that in the first cutter 15 integrated knives 21 for separating the around the first cutter 15 to use wound perimeter packaging, which then after separation into the disposal container 25 falls.

10

Duck paper roll

11

outer packaging

12

comprehensive packaging

13

splice

14

splice

15

first cutter

16

arrow

17

section

18

bulge

19

suction

20

suction

21

knife

22

arrow

23

arrow

24

second cutter

25

disposal containers

26

cutting blade

Claims (6)

A process for unpacking a printing paper roll, comprising the following steps: a) from a packed printing paper roll ( 10 ) end-cap packaging of an outer packaging ( 11 ) away; b) then a first cutting device ( 15 ) with the pressure paper roll freed from the end cover packaging ( 10 ), wherein the first cutting device ( 15 ) a peripheral packaging ( 12 ) of the printing paper roll to form a local bulge ( 18 ) and thus a distance between the peripheral packaging ( 12 ) of the printing paper roll ( 10 ) sucks; c) then the peripheral packaging ( 12 ) in the region of the bulge ( 18 ) is severed continuously in the axial direction of the printing paper roll; d) the severed and still bonded to the printing substrate peripheral packaging ( 12 ) is performed using the first cutter ( 15 ) from the printing paper roll ( 10 ) handled; e) subsequently, via a second cutting device ( 24 ) the peripheral packaging ( 12 ) is separated from the printing substrate and a free end of the printing material web is on an outer surface of the printing paper roll ( 10 ) fixed. A method according to claim 1, characterized in that in step b) the peripheral packaging ( 12 ) over two spaced, in the first cutter ( 5 ) integrated suction devices ( 19 . 20 ) is sucked in, after cutting the peripheral packaging ( 12 ) according to step c) and before the unwinding of the peripheral packaging from the printing paper roll according to step d) one of the two suction devices ( 20 ) the severed peripheral packaging ( 12 ), whereas the other of the two suction devices ( 19 ) the severed peripheral packaging ( 12 ) continues to be fixed. Method according to claim 1 or 2, characterized in that in step b) the first cutting device ( 15 ) on a section ( 17 ) of the peripheral packaging ( 12 ) is brought into engagement, seen in the circumferential direction of the printing paper roll immediately laterally next to a splice ( 13 ), which glued the peripheral packaging to the printing material web, wherein on the opposite side of this splice ( 13 ) a splice ( 14 ) of the peripheral packaging is located. Method according to one or more of claims 1 to 3, characterized in that in step d) the severed peripheral packaging ( 12 ) around the first cutting device ( 15 ), wherein following step e) the around the first cutter ( 15 ) wrapped peripheral packaging ( 12 ) for disposal preferably directly above a disposal container ( 25 ) is severed. Method according to one or more of claims 1 to 4, characterized in that in step e) the second cutting device ( 24 ) detects a transition region between the peripheral packaging and the printing material web. Method according to one or more of claims 1 to 5, characterized in that in step e) the second cutting device ( 24 ) fixed the free end of the printing material web with simultaneous execution of the splice preparation for preparing the printing paper roll to an automatic roll change on the outer surface of the printing paper roll.