TWI513561B - Die cutting and / or indentation of sheet cutting machines - Google Patents

Description

Die cutting and / or stamping station of sheet die cutting machine Field of invention

The present invention relates to a die cutting and/or stamping station as described in the preamble of claim 1 and further relates to a platform type die cutting and/or pressing as described in claim 9 Printing machine.

Background of the invention

Cutting in a closed geometry cutting die is referred to as "die cutting", which may be circular, elliptical or polygonal and any form of irregular shape. The processing carried out in the post-press processing, such as die cutting, chamfering and index die cutting using a punch, also belongs to the field. Die cutting is achieved toward a die-cut pad or toward a punch, and is also partially a shearing process. Packaging materials made of paper, cardboard, cardboard or corrugated paper are mainly die cut in sheet sizes. It is also possible to additionally apply a groove line or an arch flower in the useful portion during the die cutting process. This complicated processing makes it absolutely necessary that the sheets are individually die cut. Because the final product involves packaging that has extremely high requirements in the implementation of technology and graphics (for packaging for cosmetics, cigarettes, pharmaceuticals, food, etc.), it not only imposes special requirements on the packaging material itself, but also for the best The result is a die cutting tool with minimal tolerances and an extremely precise and reliable die cutting machine. The platform die-cutting machine best meets these requirements. Here, sheets that have been printed and stacked on the pallet are supplied to the die cutter. In this machine, the sheets to be die-cut are precisely oriented in an orientation device, received by a car and accurately placed in the die-cutting device on the lower platform of the fixed support and can be passed through the toggle or eccentric transmission Positioning between the straight movements of the straight.

In known sheet die cutting and stamping machines for die cutting, stripping, embossing and collecting sheets consisting of paper, cardboard and the like, it is known to move sheets by means of a car. Through the various stations of the machine. The corresponding car has a caries bridge to which the cavities are fixed, the jaws gripping the front end of the sheet. The car has also a laterally driven vehicle which is connected to the endless chain of the conveyor system and thus moves the car to the machine. This movement of the sheet through the machine allows continuous operation in the various stations, in particular the die cutting station, the stripping station and the useful partial separation station, which are arranged one after the other in the machine.

One such flat die cutting machine is known from DE 30 44 083 A1. The two stations are equipped with cutting and embossing knives or corresponding mating knives, which are used to guide the useful portions from the knuckles to the sheets between the table tops and simultaneously press the grooves required for the neat folding. The waste is mechanically removed by a stripping tool in a subsequent stripping device. Depending on the equipment of the machine, the useful part of the die cut can finally be separated in the useful part of the separation device provided for this purpose.

In addition to the sheet-cutting and embossing machines described above, which have a chain for the transport of caries, a sheet-cutting and embossing machine is known from DE 20 2007 012 349 U1, the squeezing of which is The outer end is driven by at least one linear drive. The linear drive is here embodied as an electric linear drive with a traveling wave field motor. In such sheet die cutting and stamping machines, different caries can move at different speeds simultaneously.

In order to perform die cutting accurately and with high quality, it is necessary to position the cutting and embossing tool relative to the mating tool. DE 195 16 073 A1 describes an apparatus for die cutting having an upper male mold and a lower female mold. The upper die includes a frame in which the carrier plate that holds the die cut and the embossing blade is held in the frame by adjustment and retention screws. The lower mold includes a metal plate that constitutes a female fitting that cooperates with the die cutting and embossing knife. The device has an adjustable stop for positioning the upper and/or lower die.

EP 0 756 919 B1 describes a device for die cutting having an upper table and a lower table. One workbench carries a die cutter and the other workbench carries a die cutboard. The mating dieboard includes a lower plate that is fixedly coupled to the table and an equally thin upper plate. The upper plate can be adjusted relative to the lower plate by at least one guiding and drive element. The two plates can be fixed relative to one another by means of at least one fastening element.

No. 5,730,039 describes an apparatus for adjusting the position of a die cutting board in a die cutting machine. The apparatus includes a die cutting plate and a support plate. The support plate is provided with two adjustment devices, each of which includes an eccentric. The die cutting plate comprises two empty slots into which the adjustment device is embedded. The die cutting plate is slid relative to the support plate by the twisting of the eccentric of the adjustment device.

EP 1 153 716 B9 describes another die cutting machine with a die cutting station which comprises a die slice. The die slice is on the support plate and held by a movable clamp. The movable clamp has two positions: a first clamping position and a rest position, in the first clamping position preventing the die slice from slipping on the die cutting plate, and allowing the die to be sliced on the support plate in the rest position Slip. The position of the support plate relative to the lower table can be changed by the level of the adjustment device.

DE 10 2008 008 112 A1 describes an apparatus for die cutting a sheet of material made of paper, cardboard and the like, having an upper table and a lower table. The upper table is coupled to a mold including a first male die-cutting and/or embossing blade, and the lower table is coupled to a second female mold that includes a plate that carries the mating mold held in the frame. The mating mold is connected to a plate carrying the mating mold, in particular screwed. The frame is connected to the lower table by means of a clamping device and can be adjusted in a motor-mounted manner with respect to the lower table by means of an adjusting device together with the plate carrying the mating mold.

Summary of invention

SUMMARY OF THE INVENTION It is therefore an object of the invention to provide a die cutting and/or embossing station which allows a simple and precise adjustment of the lower tool of the die cutting and/or embossing station and at least reduces the disadvantages of the prior art.

The task is solved by a die cutting and/or stamping station having the features of the first part of the patent application scope and by a die cutting machine as described in claim 9.

The die cutting and/or stamping station of the present invention is suitable for flat sheet die cutting and/or stamping machines. The module and/or embossing station includes an upper stage having an upper tool and a lower stage having a lower tool. Here, the upper tool has a die-cut and/or embossing knife and/or an embossed relief and the lower tool is configured as a plate-like tool that cooperates with the upper tool. The lower tool is advantageously connected directly to the lower table by means of a frameless holding and positioning device. The holding and positioning device has three degrees of freedom for the lower tool relative to the upper tool on the lower table (ie in the machine running direction, transverse to the machine running direction and as a rotation in the plane of the tool) Directional adjustment device.

The holding and positioning device advantageously relates to a frameless solution, that is to say that the lower tool is directly connected to the lower table without a frame and performs a direct adjustment of the lower tool. Therefore, the tool is not received in the frame, and the deformation of the frame may not be performed during the adjustment. Thereby the tool can be positioned with higher precision.

In an advantageous further development of the die-cutting and/or embossing station of the invention, the lower tool is positively locked and connected to the holding and positioning device in a force-locking manner. In a preferred embodiment, the holding and positioning device is fastened to the lower table and has at least one stop body and at least one clamping body, which are situated in particular opposite one another at the die cutting and/or embossing station. On the side, for example, it is provided on the driving side and the operating side. The lower tool in turn has an empty groove, wherein each stop body and each clamping body are provided with an empty groove and the empty groove at least partially receives the stop body or the clamping body. The lower tool can here have a die-cut and/or embossing plate.

In an advantageous further development of the die cutting and/or embossing station, the at least one stop body and the at least one clamping body can each be in the machine direction of the die cutting and/or embossing station. The upper slide and the at least one stop body can slide transversely to the machine running direction of the die cutting and/or stamping station. The at least one clamping body can be placed from a release position in a clamping position in which the lower tool is free to move, in which the lower tool is fixed, ie fixedly held. Also, the clamping body can be placed in the release position from the clamped position. In this way, the precise orientation of the lower tool can be achieved in an advantageous manner and a reliable fastening of the oriented lower tool can be achieved.

In an advantageous further development, the holding and positioning device has at least one cross table, which can also be referred to as an XY table and has two single-axis linear guide systems, respectively. In this case, the respective cross table is assigned to a stop body or a clamping body and is thus used to position the stop body or the clamping body. Alternatively, a four-hinge mechanism can be used for the cross table. The holding and positioning device of the die cutting and/or stamping station of the invention here has at least one four-hinge mechanism, which can also be referred to as a four-bar linkage. In this case, the respective four-hinge mechanism is assigned to a stop body or a clamping body and is used to position the stop body or the clamping body. It is particularly advantageous for the four-hinge mechanism to be arranged such that the pivoting movement of the four-hinge mechanism causes the associated stop body to slide transversely to the machine direction of the die cutting and/or embossing station. The lower tool can be positioned by means of the sliding of the stop body and the clamping body.

It is also conceivable to have a holding and positioning device having only a cross table, which has only a four-hinge mechanism or which has not only at least one cross table but also at least one four-hinge mechanism for the stop body or the clamping Body positioning. Advantageously, the cross table and/or the four-hinge mechanism has a drive, in particular a controllable electric motor, for positioning the stop body or the clamping body.

Platform type sheet die cutting and/or stamping machines are also subject matter of the invention having die cutting and/or stamping stations as described above.

Furthermore, it is advantageous if the sheet die cutting and embossing machine has a separate drive of the sheet conveying system and the individual processing stations. The drive of the sheet conveying system can be embodied, for example, as an electric linear drive with an alternating current motor.

In a further advantageous configuration of the invention, reference is made to the subordinate patent application. The description of the embodiments is made with reference to the accompanying drawings.

Simple illustration

The invention is explained in more detail below on the basis of examples. The figure shows schematically: FIG. 1 is a plan view of the lower tool and its orientation, FIG. 2a is a first embodiment of an adjustment device having a four-hinge mechanism, and FIG. 2b is an embodiment of FIG. 2a, wherein The tool is released, Figure 3a is a view of a second embodiment of the adjustment device with a cross table, Figure 3b is a plan view of a second embodiment of Figure 3a, and Figure 4a is a four-hinge mechanism of Figure 2 The detail view, Fig. 4b is a cross-sectional view of the four hinge mechanism in Fig. 4a, and Fig. 5 is a flat sheet die cutting and/or embossing machine.

Detailed description of the preferred embodiment

Fig. 5 shows a schematic structure of a sheet die cutting and stamping machine 100 for die cutting, stripping and collecting sheets made of paper, cardboard and the like. The die cutting and stamping machine 100 has a paper feed device 1, a die cutting station 2, a stripping station 3 and a delivery device 4 which are carried and surrounded by a common machine housing 5. The processing station (ie, the die cutting and/or stamping station 2, the stripping station 3, the delivery device 4) can be accessed from one side, the so-called operating side; the sheet die cutting and the drive system of the stamping machine 100 are at The opposite side, the so-called drive side.

The sheet 6 is sorted from a stack by a sheet feeder 1 and supplied to the sheet conveying system 7 and by a crucible attached to the bridge of the car of the car 8 The teeth grasp their leading edges and are intermittently drawn through the different stations 2, 3 and 4 of the die cutting and stamping machine 100 along the sheet conveying direction B. The sheet conveying system 7 has a plurality of caries 8 such that a plurality of sheets 6 can be processed simultaneously in the different stations 2, 3 and 4. The car truck 8 is here driven by a chain drive or, in an alternative embodiment, by an electromagnetic linear drive with a traveling wave field motor.

The die cutting and/or stamping station 2 comprises a lower table, a so-called lower stage 9 and an upper table, the so-called upper stage 10. The upper stage 10 is supported vertically reciprocally and is provided with die cutting and embossing knives (upper tool 30). The lower stage 9 is fixedly supported in the frame and is provided with a mating plate (the lower tool 20) that cooperates with the die-cutting and embossing blade. Alternatively, the upper stage 10 can be made stationary and the lower stage 9 can be moved. An embossing tool, in particular in the form of a so-called embossed relief, is used on the part of the die-cutting and embossing tool during embossing.

The carton 8 transports the sheet 6 from the die cutting and stamping station 2 to a subsequent stripping station 3 equipped with a stripping tool. In the stripping station 3, unwanted scrap segments are punched down from the sheet 6 by means of a stripping tool, whereby the scrap segment 11 falls into a cart container pushed underneath the station 12 in.

The sheet 6 arrives from the stripping station 3 in the delivery device 4, where the sheets 6 are either simply collected or simultaneously separated from the respective useful portions of the respective sheets 6. The delivery device 4 can also comprise a pallet 13 on which the individual sheets 6 are stacked in the form of a stack 14, whereby the pallet 13 with the sheet stack 14 can be reached after a certain stack height has been reached. It is removed from the area of the die cutting and stamping machine 100.

The die cutting and/or stamping station 2 will be described in detail below with the aid of Figures 1 to 4. And in particular the configuration of the holding and positioning device 40 for holding and positioning the lower tool 20.

Figure 1 shows the lower tool 20 of a die cutting and/or stamping station 2 (not shown), wherein the machine running direction and the sheet conveying direction are indicated by B. The lower tool 20 has an empty slot 21 on each side opposite each other. In the view of Fig. 1, the right side is the operation side BS and the left side is the drive side AS. The clamping body 43 is embedded in a recess 21 on the operating side which allows circumferential adjustment by slipping 1 along or against the machine running direction B. Furthermore, the clamping body 43 can perform a clamping movement k in order to clamp and thereby fix the lower tool 20. The stop body 42 is inserted into the recess 21 in the drive side, which allows the circumferential adjustment by slipping 1 along or against the machine running direction B and by the slip q transverse to the machine running direction B. Lateral adjustment of the tool 20. As can be seen from Fig. 1, the lower tool 20 is not received in the frame, but the adjustment of the lower tool 20 is performed by the stop body 42 and the clamping body 43 acting directly on the lower tool 20. And orientation. According to the view of Fig. 1, a clamping body 43 and a stop body 42 are respectively provided. However, a plurality of stop bodies 42 and clamping bodies 43 can also be provided in an alternative embodiment which is not shown.

The structure of the holding and positioning device 40 will be described below with the aid of additional figures.

A first embodiment is shown in Figures 2a and 2b, in which the adjustment device 41 of the holding and positioning device 40 has a four-hinge mechanism 45. A four-hinge mechanism 45 provided on the left side is used to adjust the stopper body 42, and a four-hinge mechanism 45 provided on the right side is used to adjust the clamp body 43. The clamping body 43 is also connected to a clamping mechanism 48 which is controlled by a pneumatic cylinder 49.6. According to the view of Fig. 2a, the lower tool 20 is on the lower table 9 and is locked by force The stop body 42 and the clamping body 43 which are fitted in the lower tool 20 in a form-fitting manner are fixed in their position. In order to allow the positioning of the lower tool 20, the clamping body 43 can be moved from its clamping position shown in Fig. 2a through the clamping movement k into its release position shown in Fig. 2b. The lower tool 20 thus released can be oriented relative to the upper tool 30 (not shown) by the slip motions l and q shown in FIG.

The configuration of the holding and positioning device 40 having the four hinge mechanism 45 is shown in detail in Figures 4a and 4b. A four-hinge mechanism 45 has a first coupling rod 45.1 and a second coupling rod 45.2. The stop body 42 is connected to the coupling rod 45.1 at the point of rotation 49.4 and to the coupling rod 45.2 at the other point of rotation 49.4. Each of the coupling rods 45.1 and 45.2 also has a bearing point 49.5. The end of the coupling rod 45.2 is movable by the driven spindle 49.1. The spindle 49.1 is here controlled by a drive 47 for lateral adjustment, for example a controllable motor. The oscillating motion of the coupling rod 45.2 of the four-hinge mechanism 45 translates the lateral slip motion q of the stop body 42 such that the stop body 42 causes lateral slippage of the lower tool 20 on the lower table 9. Figure 4b is a cross-sectional view of the coupling rod 45.1 and the stop body 42 and is used to indicate the longitudinal slip 1 of the stop body 42. The stop body 42 can be mounted in the coupling rod 45.1 in a rotationally movable manner at the position pivot point 49.4. The coupling rod 45.1 is connected at its lower end to a rod 49.8 in a compression seat or clamping seat 49.7. The rod 49.8 is rotatably supported at two support points 49.5. A pin 49.2 acts on one end of the rod 49.8 which is moved by the driver 46 for circumferential adjustment and causes the rod 49.8 and thus the coupling rod 45.1 and the stop body 42 to resist the spring in the direction 1 49.3 force slip.

The adjustment of the clamping body 43 (as shown in Figures 2a and 2b) can be carried out by means of a similarly constructed four-hinge mechanism 45.

An alternative embodiment of the retention and positioning device 40 is shown in Figures 3a and 3b. The adjustment device 41 of the holding and positioning device 40 has two cross tables 44 here. The right cross table 44 is here assigned to the clamping body 43 and allows not only the clamping movement k but also the sliding movement l of the clamping body 43. The clamping body 43 is inserted into the recess 21 in the lower tool 20 such that the slips k, l of the clamping body 43 likewise cause a slip of the lower tool 20. The stopper body 42 is fitted into the recess 21 which is processed on the opposite side of the lower tool 20. A stop table 44 is also provided for the stop body 42. The cross table 44 allows the slip movements l and q of the stop body 42 and thereby allows the slip of the lower tool 20. In this case, the cross table 44 has a drive 46 , for example a controlled electric motor, for adjusting the stop body 42 or the clamping body 43 in the machine direction B (circumferential adjustment 1). Each cross table 44 has a further drive 47, for example a controlled electric motor, for positioning the stop body 42 or the clamping body 43 transversely to the machine direction B (lateral adjustment q).

1‧‧‧Continuous paper device

2‧‧‧ Die-cutting and/or stamping stations

3‧‧‧disposal station

4‧‧‧Receiver

5‧‧‧ machine housing

6‧‧‧ pages

7‧‧‧ Sheet conveying system

8‧‧‧叼牙车

9‧‧‧ step down

10‧‧‧上上

11‧‧‧ scrap section

12‧‧‧Car container

13‧‧‧ pallet

14‧‧‧ Receiving stacks

15‧‧‧Control devices with interfaces and input instruments

16‧‧‧Supply table

20‧‧‧ Tools

21‧‧‧ empty slots

30‧‧‧ Tools

40‧‧‧Maintenance and positioning device

41‧‧‧Adjustment device

42‧‧‧stop body

43‧‧‧Clamping body

44‧‧‧ cross workbench

45‧‧‧ four hinge mechanism

45.1‧‧‧Coupling rod

45.2‧‧‧Coupling rod

46‧‧‧Drives for circumferential adjustment

47‧‧‧Drives for side adjustment

48‧‧‧Clamping mechanism

49.1‧‧‧ Spindle

49.2‧‧ ‧ sales

49.3‧‧‧ Spring

49.4‧‧‧ turning point

49.5‧‧‧Support points

49.6‧‧‧ pneumatic cylinder

49.7‧‧‧Repression seat/clamping seat

49.8‧‧‧ rod

100‧‧‧ sheets die-cutting and stamping machine

AS‧‧‧ drive side

BS‧‧‧Operation side

B‧‧‧ sheets conveying direction / machine running direction

E‧‧‧ sheet conveying plane

l‧‧‧Sliding along or against the direction of machine operation (circumferential adjustment)

q‧‧‧Slide in the direction of machine operation (side adjustment)

k‧‧‧Clamping movement

Figure 1 is a plan view of the lower tool and its orientation, Figure 2a is a first embodiment of an adjustment device having a four-hinge mechanism, and Figure 2b is an embodiment of Figure 2a, in which the lower tool is released, Figure 3a Is a view of a second embodiment of an adjustment device having a cross table, FIG. 3b is a plan view of a second embodiment of FIG. 3a, and FIG. 4a is a detailed view of the four-hinge mechanism of FIG. 2, FIG. 4b Is a cross-sectional view of the four-hinge mechanism in Figure 4a, Figure 5 is a platform type sheet die cutting and / or stamping machine.

1. . . Paper feeder

2. . . Die cutting and / or stamping station

3. . . Waste disposal station

4. . . Delivery device

5. . . Machine housing

6. . . Page

7. . . Sheet conveying system

8. . . Car

9. . . Step down

10. . . Go on stage

11. . . Scrap segment

12. . . car

13. . . Pallet

14. . . Receiving stack

15. . . Control device with interface and input instrument

16. . . Supply desk

20. . . Down tool

30. . . Upper tool

100. . . Sheet die cutting and stamping machine AS drive side

B. . . Sheet conveying direction / machine running direction

E. . . Sheet conveying plane

Claims (10)

A die cutting and/or stamping station for a platform sheet die cutting and/or stamping machine comprising an upper table having an upper tool and a lower table having a lower tool, wherein the upper tool has a die cut and/or An embossing knife and/or an embossed relief plate and the lower tool is configured as a plate-like fitting tool that cooperates with the upper tool, wherein the lower tool is directly attached to the frame by means of a frameless holding and positioning device Said lower table connection, and located on said lower table, said holding and positioning device having adjustment means for directing said lower tool, said holding and positioning device being fixed on said lower stage and having at least one stop body and at least A clamping body, the lower tool has an empty slot, and each of the stop body and each clamping body is provided with an empty slot. The die-cutting and/or embossing station of the first embodiment is connected to the holding and positioning device in a form-fitting and force-locking manner. A die cutting and/or stamping station as claimed in claim 1 or 2, wherein the lower tool has a die cut and/or embossed plate. The die cutting and/or stamping station of claim 1 or 2, wherein the at least one stop body and the at least one clamping body are each slidable in a machine running direction and the at least one stop The body can be slid transversely to the machine running direction, the at least one clamping body being able to enter the clamping position from the release position and in turn can be moved into the release position from the clamping position. The die cutting and/or stamping station of claim 1 or 2, wherein the holding and positioning device has at least one cross table, wherein the corresponding cross table is configured for a stop or a clamping body To make the stop or The clamping body is positioned. The die cutting and/or stamping station of claim 1 or 2, wherein the holding and positioning device has at least one four-hinge mechanism, wherein the corresponding four-hinge mechanism is configured to a stop body or a clamping body In order to position the stop body or the clamping body. The die-cutting and/or embossing station of claim 6, wherein the four-hinge mechanism is arranged such that the oscillating movement of the four-hinge mechanism causes the associated stop body to slide transversely to the machine running direction. The die cutting and/or stamping station of claim 5, wherein the cross table has a drive, in particular a controllable motor, for driving the cross table and thereby for the stop body or the Positioning of the clamping body. The die cutting and/or stamping station of claim 6, wherein the four-hinge mechanism has a driver, in particular a controllable motor, for driving the four-hinge mechanism and thereby for the stop body or the Positioning of the clamping body. A flatbed sheet die-cutting and/or stamping machine having a die-cutting and/or stamping station as claimed in any one of claims 1 to 9.