Method For Contour Punching An Output Stack And Punching Device

Abstract

A method for contour punching an output stack consisting of sheet-like material and a punching device for carrying out the method Includes providing at least two punching procedures. A large proportion of an unprinted region is separated from a printed region in a first punching procedure and a first punching waste produced thereby is collected separately, whereby the quantity of the second punching waste which is formed in a second punching procedure is significantly less than if only a single punching procedure were to be carried out. By collecting the first punching waste and the second punching waste separately, it is possible to provide this waste in each case for appropriate disposal or appropriate recycling.

Claims

1. A method for contour punching an output stack consisting of sheet-like material comprising the following method steps: providing an output stack consisting of the sheet-like material to be punched, wherein a respective sheet has a printed region and an unprinted region which encloses the printed region, wherein the printed region has an outer contour; providing a first contour punching blade, wherein a first punching contour of the first contour punching blade is larger than the outer contour of the printed region; pressing the output stack into the first contour punching blade for forming a pre-punched stack, such that the first contour punching blade exclusively penetrates the output stack in the unprinted region, so that a first punching waste formed in this first punching procedure is free of printed regions; collecting the first punching waste; providing a second contour punching blade, wherein a second punching contour of the second contour punching blade is smaller than the outer contour of the printed region or corresponds to the outer contour of the printed region; pressing the pre-punched stack into the second contour punching blade for forming a usable stack, such that the second contour punching blade cuts through the pre-punched stack in the printed region so that second punching waste formed in this second punching procedure has printed regions; and collecting the second punching waste separately from the first punching waste.

2. The method according to claim 1, wherein the pre-punched stack is pressed into the second contour punching blade by the output stack acting on the pre-punched stack when the output stack is pressed into the first contour punching blade.

3. A punching device for carrying out the method according claim 1, wherein the punching device has a first contour punching blade with a first punching contour, a second contour punching blade with a second punching contour, wherein the dimensions of the first punching contour of the first contour punching blade are larger than the dimensions of the second punching contour of the second contour punching blade, wherein the punching device has a punching die which is movable in a direction of movement towards the first contour punching blade for pressing an output stack into the first contour punching blade, for forming a pre-punched stack when the first contour punching blade passes through the output stack, wherein the punching device has a first collecting device for collecting a first punching waste formed when the first contour punching blade passes through the output stack, wherein the second contour punching blade is arranged downstream of the first contour punching blade in the direction of movement of the punching die, so that the pre-punched stack is pressed into the second contour punching blade when the punching die is moved in the direction of movement towards the first contour punching blade, wherein the device has a second collecting device for collecting a second punching waste formed when the second contour punching blade passes through the pre-punched stack, and wherein the first collecting device and the second collecting device are separate.

4. The punching device according to claim 3, wherein a geometric shape of the first punching contour of the first contour punching blade is transferred by scaling into a geometric shape of the second punching contour of the second contour punching blade, and wherein a corresponding scaling factor is less than 1.

5. The punching device according to claim 3, wherein the punching device further has a drive for moving the punching die in the direction of movement towards the first contour punching blade.

6. The punching device according to claim 3, wherein the first and second contour punching blades are arranged nested in one another.

7. The punching device according to claim 3, wherein the punching device further has at least one diverting element for diverting the first punching waste into the first collecting device and/or for diverting the second punching waste into the second collecting device.

8. The punching device according to claim 3, wherein the first collecting device and/or the second collecting device are/is a waste container.

9. The punching device according to claim 3, wherein the first contour punching blade and/or the second contour punching blade are/is displaceably and/or pivotably mounted relative to one another.

10. The punching device according to claim 3, wherein the first contour punching blade and the second contour punching blade are mounted in a common bearing structure, and wherein the bearing structure is pivotably and/or displaceably mounted in the punching device.

11. The punching device according to claim 10, wherein the first contour punching blade and/or the second contour punching blade are/is displaceably and/or pivotably mounted in the bearing structure.

12. The punching device according to claim 3, wherein the first punching contour of the first contour punching blade and/or the second punching contour of the second contour punching blade are/is configured as a closed contour.

Description

BRIEF DESCRIPTION OF THE DRAWING FIGURES

[0033] The invention is described in more detail and illustrated in the accompanying drawing figures by means of an exemplary embodiment, without being limited thereto.

[0034] FIG. 1 shows a schematic view of an embodiment of a punching device according to the invention in a side view.

[0035] FIG. 2 shows the punching device according to FIG. 1 when carrying out the punching procedures.

[0036] FIG. 3 shows a sheet of an output stack with a printed label in a plan view.

[0037] FIG. 4 shows the sheet according to FIG. 3 with an illustrated punching contour of a first punching blade.

[0038] FIG. 5 shows a second punching waste produced in a second punching procedure.

[0039] FIG. 6 shows a schematic view of the punching contour of the first contour punching blade.

[0040] FIG. 7 shows a schematic view of the punching contour of a second contour punching blade.

DETAILED DESCRIPTION OF THE INVENTION

[0041] FIGS. 1 and 2 show a punching device according to the invention, wherein the punching device has a first contour punching blade 7 with a punching contour 8 (FIG. 4; FIG. 6), a second contour punching blade 9 with a punching contour 10 (FIG. 7) and a punching die 15 which is displaceable in the direction of movement X. The punching die 15 is movable by means of the drive 16. The punching die 15 serves for pressing an output stack 1 into the first contour punching blade 7.

[0042] The output stack 1 is formed from a plurality of paper sheets, which are stacked one on top of the other, and is pre-cut such that it is cuboidal and a single printed label 20 (FIG. 3) is printed on the respective paper sheet. In this regard, the respective paper sheet or the respective sheet 3 (FIG. 3) has a printed region 4 (FIGS. 3-5), namely the printed label 20, and an unprinted region 5 (FIGS. 3-5) enclosing the printed region 4 over the periphery, wherein the printed region 4 has an outer contour 6 (FIG. 3). The printed label 20 has slightly larger dimensions than the final cut label 2 (FIG. 2). In the present case, the final cut label 2 is a label for the neck region of a bottle.

[0043] The punching contour 8 of the first contour punching blade 7 and the punching contour 10 of the second contour punching blade 9 in the present case are able to be moved approximately into one another by scaling, wherein the punching contour 8 of the first contour punching blade 7 is slightly larger than the outer contour 6 of the printed region 4 and the punching contour 10 of the second contour punching blade 9 is slightly smaller than the outer contour 6 of the printed region 4. The punching contour 10 of the second contour punching blade 9 corresponds to an outer contour of the final cut label 2.

[0044] During the punching procedure by means of the punching device according to FIG. 1, the output stack 1 is displaced by means of the punching die 15 in the direction of the first contour punching blade 7 and pressed into the contour punching blade 7 such that a pre-punched stack 11 (FIG. 2) is formed. The first punching waste 12 which is formed by this punching procedure is collected in a first collecting device 17 which is arranged below the first contour punching blade 7. During this first punching procedure, the first contour punching blade 7 penetrates the output stack 1 exclusively in the unprinted region 5 of the output stack 1 or the respective sheet 3, as is shown schematically in FIG. 4. In this regard, the first punching waste 12 which is formed in this first punching procedure is free of printed regions.

[0045] The punching device is configured such that the pre-punched stack 11 is pressed into the second contour punching blade 9 by the output stack 1 acting on the pre-punched stack 11 and pressing this pre-punched stack 11 into the second contour punching blade 9 when the output stack 1 is pressed into the first contour punching blade 7 by means of the punching die 15. When the pre-punched stack 11 is pressed into the second contour punching blade 9 a usable stack 13 consisting of final cut labels 2 is formed. In this case, the second contour punching blade 9 penetrates the pre-punched stack 11 exclusively in the printed region 4, so that second punching waste 14 which is formed in this second punching procedure has printed regions 4 and unprinted regions 5. By way of example, this second punching waste 14 is shown for an individual sheet 3 in FIG. 5. The punching waste 14 shown in FIG. 5 is ring-shaped, with an inner printed region 4 and an unprinted region 5 enclosing the printed region 4 radially outwardly over the periphery.

[0046] The punching device has a second collecting device 18 for collecting the second punching waste 14 which is formed in the second punching procedure. In order to avoid the situation where the first punching waste 12 is mixed with the second punching waste 14 and in order to ensure that the punching waste 12, 14 which is formed is reliably supplied to the respective collecting device 17, 18, the punching device has two diverting elements 19, wherein one of the diverting elements 19 extends from the first contour punching blade 7 in the direction of the adjacent side walls of the collecting devices 17, 18 and the other diverting element 19 extends from the second contour punching blade 9 in the direction of a side wall of the second collecting device 18 opposing the adjacent side wall. In this punching device it is thus ensured that exclusively unprinted first punching waste 12 is collected in the first collecting device 17, said first punching waste 12 being able to be disposed of separately from the at least partially printed second punching waste 14 which is collected in the second collecting device 18. Thus, the costs for the waste disposal may be reduced, since typically the costs for the disposal of printed material are greater than for the disposal of unprinted material. The unprinted material may be resold as recyclable material. As a result, money may be saved overall by separating the printed and unprinted waste material.