EP1914050B1 - Flat-bed cutting press for sheets - Google Patents

Abstract

A punching device (3) and processing devices (1,4,5) handle sheet material made from paper and cardboard. A transporting device (10) has a driving mechanism for transporting sheets of material to be processed through the punching device and the processing devices.

Description

The present invention relates to a flatbed sheet punching machine according to the preamble of claim 1.

As punching the cutting is referred to as closed, geometric blank forms that can be circular, oval or polygonal as well as fantasy shapes of all kinds. Even the practices practiced in print finishing such as punching with punch, repel corners and register punching are counted to this area. The punching takes place against a punching pad or against stamp, in some cases it is also shearing operations (see Druckweilerverarbeitung, Training Guide for Bookbinder, Bundesverband Druck eV 1996, page 351 ff.).

Packaging materials made of paper, cardboard, cardboard or corrugated board are mainly punched in sheet format. When punching but also creasing lines or blind embossing can be introduced into the benefit. This complex process makes it indispensable to punch the sheets individually. Since the end products are sophisticated packaging in terms of technical and graphic designs (such as packaging for cosmetics, cigarettes, pharmaceuticals, foodstuffs, etc.), special requirements are not only placed on the packaging materials themselves, but punching tools are also required for optimum results lowest tolerances and extremely precise and reliable working punching machines required.

Flatbed punching best meets these demands. The printed sheets stacked on a pallet are fed to the punching machine. In the machine, the singling of the sheets to be punched, which are then subsequently aligned in an alignment device, carried out by a gripper carriage and exactly in the punching device between a fixed undercounter and a toggle lever or in a singling Exzentergetriebe vertically movable upper table positioned. Such a flat bed punch is for example from the DE 30 44 083 A1 known.

The two tables are equipped with cutting and scoring tools or corresponding counter tools with which punched out of the cyclically guided between the table surfaces bows and simultaneously pressed the necessary for clean folding grooves. In the following breaker the waste is removed by machine tools. Depending on the equipment of the machine finally the punched benefits can be separated in a designated benefit separation device.

The known flat-bed sheet punching machines, which are offered for example by the applicant under the Dymatrix series, have a central drive, via which on the one hand a transport device is driven, which transports the sheets to be processed through the machine, and the other on Schubstanbengetriebe the punch subsequent processing stations drives. The upper table is driven by an eccentric gear coupled to the main drive. Thus, since all stations are mechanically coupled centrally with the main gearbox, it is expensive to change the motion sequences for the individual processing stations.

From the EP 1 228 994 A2 a flat bed sheet punching machine is known in which the punching device and any other processing stations are provided with a drive which is independent of the drive of the transport device. The drive of the transport device is synchronized via a central control.

The present invention has for its object to design a flat bed sheet punching machine flexible.

This object is achieved by the features of claim 1.

The invention is therefore based on the consideration to provide the punching device with an independent own drive, which allows to set the punching speed and the punching force individually to the respective needs. In this way, a complicated conversion of the punching device or a multiple processing of a sheet is unnecessary.

The drives in this case have an electric motor or a servo motor, since in these the drive power and thus the punching force and speed of the punching tool can be adjusted in a simple manner.

The individual drives are each provided with a control unit, wherein the control units are connected to each other via a connection for the exchange of data and / or control signals.

The at least one further processing device also has a separate drive from the drive of the transport device and the drive of the punching machine. If a plurality of processing devices are provided, each of these processing devices is expediently equipped with a separate drive independent of the drive of the punching device, by the drives of the other processing stations and by the drive of the transport device. In this way it is possible to adjust the further processing devices, for example for inserting, separating and aligning the material sheets to be processed or for breaking out the waste and for depositing the punched out benefits individually to the respective needs. Since the processing facilities are independent of each other due to their separate drives, they can be designed in the manner of independent modules that can be replaced or retrofitted individually.

Advantageously, the data and / or control signals can be exchanged either directly with each other, or even after the master / slave operation via a central controller. However, in master / slave operation, it may well make sense that the individual controllers receive their control commands from the central controller, but receive the data signals independently. For this purpose, advantageously offers that the connection for the exchange of data and / or control signals as a field bus, advantageously designed as a CANopen bus.

If the punching device of the flatbed sheet punching machine is equipped with two mutually movable tables, it is also possible to provide a separate drive for each of the two tables.

Fig. 1

eine Flachbett-Bogenstanzmaschine gemäß der vorliegenden Erfindung

Fig. 2

eine Flachbett-Bogenstanzmaschinen gemäß Fig. 1 mit einer zentralen Steuerung

With regard to further advantageous embodiments of the invention, reference is made to the dependent claims and the following description of an embodiment with reference to the accompanying drawings. In the drawing shows

Fig. 1

a flatbed sheet punching machine according to the present invention

Fig. 2

a flatbed sheet punching machine according to Fig. 1 with a central control

The in the FIG. 1 illustrated flat-bed sheet punching machine, which can be used for punching and / or embossing processing of sheet-like materials made of paper, cardboard and the like and in particular in the production of paper or cardboard blanks, comprises in the direction of passage X one behind the other lying an insertion and separation device 1, an alignment device 2, a punching device 3, a breaking-out device 4, a use-depositing device 5 and a separating-sheet feeding device 6. Furthermore, a pallet station 7 is provided on the utility-depositing device 5.

In the loading and separating device 1, the sheets to be processed stacked provided and removed from the stack via a suction head 8 individually from above and placed on a conveyor belt 9, which feeds the sheet of the alignment device 2, where this example, at three points with Side and front brands are aligned accurately.

In the processing of endless webs, instead of the insertion device 1, a unwinding device, possibly with subsequent cross-cutters, is used.

In the alignment station 2, the aligned sheet is taken over by a gripper of a transport system, of which in the drawing only the transport chain 10 is shown, which clocks the sheet and precisely aligned by the other processing stations 3, 4, 5, 6 leads.

The alignment station 2 is arranged downstream of the punching device 3, which has a fixedly mounted on the machine frame G under table 11 and a vertically movable upper table 12. The upper table 12 carries a punching knife and the undercounter a stamped counter plate.

The operation of the upper table 12 is carried out in the usual manner by means of an eccentric 14, which is driven for example via an electric motor 13.

Subsequent to the punching device 3, the breaking-out device 4 is provided, in which the unwanted waste pieces produced during the punching process are pushed out of the sheet downwards, whereby these pieces of waste fall into a container-like carriage 15 inserted below the breaking-out device 4.

Behind the breakout device 4 is the depositing device 5, in which the sheet is either simply stored or at the same time there is a separation of the individual benefits, separating tools can not be used here in more detail. The sheets can be stored here on pallets and stacked, which are housed in the pallet station 7, so that after reaching a certain stack height, the pallet can be moved away with the stacked sheets from the field of punching machine.

As can be clearly seen in the drawing, the inserting and separating device 1, the punching device 3, the breaking-out device 4 and the depositing device 5 are each provided with their own drives, for example in the form of electric motors 13, 16, 17, 18, which depend on each other and on the drive 19 of the transport device shown only schematically are independent. Thus, the engine power and thus the available driving force and drive speed in each workstation 1, 3, 4, 5 are set individually as needed, which can be costly retooling to avoid product changes.

Furthermore, it is off Fig. 1 recognizable that the individual drives 13, 16, 17, 18 19 each have a control unit 23, 26, 27, 28, 29. The control units are interconnected via a connection 30 for the direct exchange of data and / or control signals.

In the out Fig. 2 apparent configuration, the exchange of data and / or control signals via a central controller 31. It is possible that the control units exchange the data and / or control signals directly with each other and receive 31 additional data and / or control signals from the central controller or that the individual control units work together according to the master / slave principle with the central control.

LIST OF REFERENCE NUMBERS

1

Loading and separating device

2

straightener

3, 3 '

punch

4

Ausbrecheinrichtung

5

Benefits depositing device

6

Release sheet feeder

7

Pallet station 7

8th

suction head

9

conveyor belt

10

transport chain

11

under table

12

overtable

13

Drive punching device

14

eccentric

15

dare

16

Drive singulation device

17

Drive breaking device

18

Drive utility storage device

19

Drive transport chain

23

control unit

26

control unit

27

control unit

28

control unit

29

control unit

30

Connection for the exchange of data and / or control signals

31

Central control

G

machine frame

X

Sheet travel direction

Claims (7)

1. Sheet-fed flatbed diecutting machine for diecutting or embossing sheet-shaped material made of paper, board and the like, in particular for producing paper or cardboard blanks, including a diecutting device and at least one further processing station (1, 4, 5) and a transport device (10) with a drive for transporting the sheets of material to be processed through the diecutting device (3) and the at least one further processing device (1, 4, 5), the diecutting device (3) and/or the at least one further processing station (1, 4, 5) having its own drive (13) independent of the drive of the transport device (10)
   characterized by
   the fact that the drive (13) of the diecutting device and/or the drive (16, 17, 18) of the at least one further processing station (1, 4, 5) has an electric motor (14), in particular a servomotor, the drives (13, 16, 17, 18) and the drive of the transport device (10) being provided with a respective control unit,
   and that the control units of the individual drives are connected by a connection for exchanging data and/or control signals, the at least one further processing device (1, 4, 5) having its own drive (16, 17, 18), which is independent of the drive of the transport device (10) and of the drive (13) of the diecutting device (3).
2. Sheet-fed flatbed diecutting machine according to Claim 1,
   characterized by
   the fact that each processing device (1, 4, 5) has its own drive (16, 17, 18), which is independent of the drive of the diecutting device (3), of the drives of the other processing stations, and of the drive of the transport device (10).
3. Sheet-fed flatbed diecutting machine according to one of the preceding claims,
   characterized by
   the fact that the control units directly exchange the data and/or control signals with each other.
4. Sheet-fed flatbed diecutting machine according to one of the preceding claims,
   characterized by
   the fact that the control units of the individual drives are connected to each other via a central control unit and that the exchange of data and/or control signals occurs in accordance with the master/slave principle.
5. Sheet-fed flatbed diecutting machine according to one of the preceding claims,
   characterized by
   the fact that the connection for exchanging data and/or control signals is constructed as a fieldbus.
6. Sheet-fed flat-bed diecutting machine according to Claim 5,
   characterized by
   the fact that the fieldbus is a CANopen bus.
7. Sheet-fed flatbed diecutting machine according to one of the preceding claims,
   characterized by
   the fact that the further processing devices are a device for inserting and/or separating and/or aligning the sheets of material to be processed and/or for stripping off the waste and/or for depositing the cut blanks.

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