EP1283765B2 - Device for processing printed packaging or similar substrates - Google Patents

Abstract

The system is designed with tool parts (7,8), effective on the substrate with its passage in the gap between the processing rollers (4,5). One processing roller (4) is provided with at least one gripping unit (9), for a correctly recorded transport of the substrate. The at least one gripping unit is provided on the lower processing roller.

Description

The invention relates to a device for finishing processing, in particular for cutting or punching, of printed cardboard, cardboard packaging, corrugated cardboard, paper o. The like. Arcuate substrates, having the features of the preamble of claim 1.

Known devices for processing printed substrates ( US Patent No. 4,604,083 ) are formed as an integral part of a sheet processing printing machine, wherein by means of respective sliding elements, a printed substrate for punching between rotating processing rollers inserted and processed by means located on the cylinder peripheral surface punching tool parts. A register-compliant superimposition of printed image and finishing level is possible only with great technical effort and the processing accuracy adversely affected.

The invention is concerned with the problem of providing a device for punching printed material, in particular packaging means or the like. Substrates, which can be used as an additional unit for substantially any printing press, by improving the accuracy of the sheet-fed printing by adopting the substrate in the exact position and can be quickly adjusted to changing processing contours even of different substrates. A device according to the preamble of claim 1 is in U.S. Patent 3,383,991 described.

The invention solves this problem by a device having the features of claim 1. With regard to essential Further features, reference is made to the dependent claims.

The inventive device for punching already printed substrates is provided with two known processing rollers, of which at least one in the region of its peripheral tool part has a gripper with which a substrate performing, to be transported signature both registered as registered as well as in a register-ready transport position is introduced between the processing rollers.

The rotating processing rollers with the integrated gripper thus form a functional unit, so that with the device, a refining of the substrate by punching in a processing line with the printing is possible. It is also conceivable that the scope of the device with embossing and / or Lochungsbearbeitung (s) is extended. The substrate can, for example, be taken over directly by a printing press upstream of the device so that this printing press and the finishing device can be operated synchronously at high speed. In this case, a register-oriented superimposition of the printed image is achieved with the machining contour of the subsequent tool parts and with improved accuracy and different substrates with changing machining contours after short changeover times are editable, so that the productivity of the processing line is increased by a total bundling process.

Further details and advantageous effects of the invention will become apparent from the following description and the Drawings illustrating two embodiments of the device according to the invention.

Fig. 1

eine Prinzipdarstellung der Vorrichtung zum Stanzen von zu veredelndem Material mit einer den Abfall aufnehmenden Entsorgungseinheit,

Fig. 2

eine vergrößerte Ausschnittsdarstellung der Vorrichtung im Bereich der Bearbeitungswalzen mit einer Gegenwalze,

Fig. 3

eine Vorderansicht der unteren Bearbeitungswalze mit der Gegenwalze,

Fig. 4

eine vergrößerte Ausschnittsdarstellung der beiden Bearbeitungswalzen im Bereich des Greifers,

Fig. 5

eine Draufsicht auf ein bogenförmiges Veredelungsmaterial mit Anordnung auszustanzender Kartonteile,

Fig. 6

eine Prinzipdarstellung der Vorrichtung in einer zweiten Ausführungsform als separate Bearbeitungsstation,

Fig. 7 und Fig. 8

jeweilige Prinzipdarstellungen der Vorrichtung im Bereich der Zuführvorrichtung,

Fig. 9

eine vergrößerte Ausschnittsdarstellung einer Zahnradverbindung im Bereich des Antriebs der Bearbeitungswalzen, und

Fig. 10

eine Seitenansicht der Vorrichtung ähnlich Fig. 1 mit einem Ablagezylinder im Bereich der Auslegevorrichtung.

In the drawing show:

Fig. 1

a schematic diagram of the device for punching material to be refined with a waste receiving disposal unit,

Fig. 2

an enlarged sectional view of the device in the region of the processing rollers with a counter-roller,

Fig. 3

a front view of the lower processing roller with the counter-roller,

Fig. 4

an enlarged sectional view of the two processing rollers in the region of the gripper,

Fig. 5

a plan view of a sheet-shaped finishing material with arrangement of punched cardboard parts,

Fig. 6

a schematic representation of the device in a second embodiment as a separate processing station,

FIGS. 7 and 8

respective schematic representations of the device in the region of the feeding device,

Fig. 9

an enlarged sectional view of a gear connection in the region of the drive of the processing rollers, and

Fig. 10

a side view of the device similar Fig. 1 with a storage cylinder in the region of the delivery device.

In Fig. 1 is a device generally designated 1 for punching a substrate formed by single sheets as a finishing material 2 ( Fig. 5 ). In particular, printed board, cardboard packaging, envelopes, cartons, blister cards, corrugated board and multilayer substrates are provided, which are to be processed by a punching and / or breaking process. The substrate 2 to be processed in the form of the individual sheets 3 is moved in a feed direction A (FIG. Fig. 4 ) introduced between two rotating processing rollers 4, 5 and when passing through effective in the working gap 6 tool parts 7 and 8, the substrate 2 undergoes its processing.

In the apparatus 1 designed according to the invention, at least one of the processing rollers 4, 5 is provided with at least one gripper 9 ( Fig. 2 ), which allows a register-accurate detection of the substrate 2 and its precise transport through the device 1.

In Fig. 1 . 2 and 6 Embodiments of the device 1 are shown, which formed as a die roller lower processing roller 4 has two offset by 180 ° arranged gripper 9, 9 '. It is also conceivable that only one of the grippers 9, 9 'on the lower processing roller 4 (die) and / or on the upper processing roller 5 (male) is provided (not shown).

In an expedient embodiment, a gripper bar 12 mounted in a peripheral transverse channel 11 of the processing roller 4 is provided as gripper 9, 9 ', which extends substantially over the entire width B of the respective roller 4 (FIG. Fig. 3 ). At the ends of the transverse channel 11, the gripper bar 12 is set adjustable in the region of a support axis 10.

The enlarged detail representation according to Fig. 2 illustrates that the device 1 on the receiving side immediately adjacent to a feeding device 13, by means of which also consisting of different finishing material substrates 2 are fed in accordance with the register. The feeding device 13 is in turn arranged downstream of a sheet-fed printing machine not shown in detail as a register-oriented discharge unit, which may be designed in particular as an offset printing press.

The feeding device 13 or 34 (FIG. Fig. 6 ) comprises respective grippers 14, which take over the substrate 2 respectively from the sheet-fed printing machine and the gripper 9 or 9 'of the processing roller 4 in a transfer direction C ( Fig. 2 ) respectively. In this case, in a synchronized movement phase of the modules, a position ( Fig. 1 ) reached as transfer position P. This transfer position P of the substrate 2 to the gripper 9, 9 'of the processing roller 4 is optimally adjustable both by register adjustment in the area of the upstream sheet-fed printing machine and by a corresponding adjustment of the gripper 14 of the delivery device 13. With this register adjustment in the area of the printing machine, an adjustment of the grippers 9, 9 'in the area The roller 4 dispensable, so that no stability-influencing adjusting elements are required on the device 1.

Of functional importance for the accuracy of the finishing process in the device 1 is an exact adjustment of the grippers 9, 9 'and the gripper 14 to each other. The grippers 14 of the feed device 13 pass through in the transfer position P to the movement path D of the gripper 9, 9 'of the processing roller 4 so approximated trajectory E, that at the transfer and acquisition in the transfer position P, the substrate in phases simultaneously from the gripper 14 of the feed unit 13 and held by the gripper 9 and 9 'of the processing roller 4. In the area of the transfer position P, the grippers 9 and 14 cooperate on a transfer path of, for example, 1 to 5 mm, this path being adjustable to the register to a degree of ± 0.01 mm.

The representation according to Fig. 2 illustrates that the feed unit 13 in the region of the sheet-fed press (not shown) facing end with a painting and / or dryer unit 15, 16 is provided for the substrates.

On the other hand, the apparatus 1 is followed by a delivery device 18 which takes over the processed substrate 2, in the region of which a waste part 19 of the sheet 3 (referred to as a processing waste) is punched after a punching operation. Fig. 5 ) receiving, generally designated 20 disposed disposal device ( Fig. 1 ). Provided is a shredding device 24, in the respective waste parts 19 via conveying pipes 25, for example in a Fall direction R, fed and then discharged via pipes 25 'in a bunker 26. It is also conceivable to connect the delivery pipes 25, 25 'to a central disposal unit (not shown).

The comminuting device 24 provided as a disposal device cooperates with the device 1 via the conveying pipe 25 passing through a building ceiling 30, the latter being connected to the delivery device 18 in the vicinity of its end facing the machining rollers 4, 5. The delivery device 18 advantageously has a vacuum suction device 22 (FIG. Fig. 4 ), with which a separation of the substrate 2 and the waste parts 19 (FIG. Fig. 5 ) is achieved.

According to the invention, the delivery device 18 is provided with a table 23, which accommodates the substrates 2 remaining as a top side on the top side ( Fig. 5 , right side) and transported away. At its receiving end 21, the table 23 delimits, together with the lower processing roller 4, a passage gap 28, in the region of which a downwardly directed passage (arrow F) of the waste 19 resulting from the processing is achieved towards the comminution device 24, that is still firmly in the gripper 9 held waste part 19 is taken in the direction of arrow F and F 'in the delivery pipe 25 passes ( Fig. 2 ). At the discharge end of the working gap 6, the remaining as a good part substrate 2 is separated by a spread of the waste part 19, wherein the substrate 2, for example, on a dash-dot line in Fig. 4 shown web 27 on the table 23 passes. This spreading and transport process can advantageously be assisted by directing a blowing or suction air flow onto the substrate 2 or the waste part 19 via a device not shown in detail.

The enlarged detail according to Fig. 4 illustrates that the at least one gripper 9, 9 'of the processing roller 4 is provided with a respective circumferential register adjustment device 31, by means of which the grippers 9, 9' by a pivoting movement (arrow S, Fig. 4 ) and can be adjusted to fit around the central longitudinal axis M of the roller 4.

In addition to this adjustment (arrow S), an adjustment of the gripper 9 bearing processing roller 4 may be provided, which has a non-illustrated side and / or Diagonalregisterverstellvorrichtungen. Thus, an adjustment according to arrow H and K can be performed (arrow H: diagonal register, arrow K: page register). It is also conceivable that both processing rollers 4 and 5 have the above-described register adjustments (arrows S, H and K).

For a flexible use of the device 1 described above, the processing rollers 4, 5 are provided in the area of the tool parts 7, 8 with interchangeable processing tools. For their rapid replacement, the processing rollers 4, 5 may advantageously be formed by respective magnetic cylinders, on which the processing tools 7, 8 are defined in the form of punching, creasing, punching and / or embossing tools.

Likewise, it is conceivable that one of the above-described processing steps, in particular a perforation of the substrate 2, is realized on an additional device (not shown) integrated into the processing line in register, this being provided in front of or behind the device 1 in the processing sequence.

The overall concept of the device 1 also provides that the processing rollers 4 and 5 are individually, as a whole or jointly replaced (arrow L, Fig. 1 . Fig. 6 ). The embodiment of the device 1 according to Fig. 2 shows an arrangement of a counter-pressure roller 35, which is arranged in the region of the processing roller 4. The processing rollers 4, 5 or the counterpressure roller 35 can be integrated into a machine frame 40 in the manner of a cassette such that in a transverse direction L '(FIG. Fig. 3 ) the single or common removal is possible and thus the respective tool parts 7, 8 or the entire punching cassette or the punching tools are particularly easy to replace.

In the illustration according to Fig. 6 is in a second embodiment, the device 1 'as an independent of the register of an associated printing machine 32 effective assembly illustrated, wherein the discharged from the printing machine 32 substrate 2 by means of a conveying process, for example, fed by a conveyor belt 33, detected by a feeder 34, register-right between the two processing rollers 4, 5 introduced and then fed to the delivery device 18 of a further finishing and / or stacking unit 36. It is also conceivable that this off-line unit with painting and / or dryer assemblies similar to the units 15, 16 in Fig. 2 is equipped.

In Fig. 7 a possibility of structurally changed parts of the system is shown, with which a rolling cut can be achieved during rotary punching. In this procedure, especially when punching cross lines load peaks are reduced so that a processing with low punching pressure is done so a frequent readjustment of the tools is avoided and for the first time slimmer punching cylinders (rollers 4, 5) can be used. These components have a ratio of diameter to width of 1: 1 or less than 1: 1, for example 1: 1.2; 1: 1.4, etc., on. These size ratios in the region of the processing rollers 4, 5 allow an optimal combination of such devices with conventional printing machines, such as sheetfed offset presses, the skew and thus achieved lower punching pressure are particularly advantageous effect. The processing rollers can thus be dimensioned in their format (circumference x width) so that this is equal to the format of the image-bearing impression cylinder.

The feeder 13 feeds the substrate from the printing machine 32 into the area of the processing rollers 4, 5 as shown in FIG Fig. 2 and 6 already shown in more detail. For the transfer of the substrate in the area P, the gripper bar 12 is provided, which in the embodiment according to Fig. 7 is mounted with a helix angle 69 on the machining roller 4 in a slanted position. This inclination can cooperate with an axial tilt (tilt angle 70) in the region of a feed roller 71, so that a rolling transfer and acquisition of the substrate is achieved. The substrate 2 is introduced and further transported with a corresponding inclination between the processing rollers 4 and 5 so that a rolling cutting profile without abrupt loading of the punching tools can be achieved. With an angle 69 ', an additional inclination in the region of the processing roller 5, for example, an inclined position whose punching plate, shown, with a skew angle of 0.5 ° has been found to be practicable for all of the inclinations and tilting.

In 8 and 9 a drive concept in the area of the printing press 32, the feed unit 13 and the punching device 1 is shown in a schematic representation. In this case, two servo drive motors 72 and 72 'for securing a synchronous drive are each provided with a contactless gear connection 73 (FIG. Fig. 9 ), wherein the teeth mesh with one another during the drive phase constant distance 74, 74 'without contact. The teeth only come to rest when a control error, for example in the software area, could lead to an unwanted overloading of the system and an immediate shutdown of the drive torque is required. With this gear connection 73 securing the system against destruction, in particular the gripper 9, achieved with little effort.

In Fig. 10 is the device 1 "with respect to the embodiment according to Fig. 1 modified component assembly behind the processing rollers (4, 5), whereby the device 1 "in addition to the already in 4 and 5 shown punching and breaking of the substrate can also be used for its stamping. In this punching operation, the gripper 9 detects in the manner described above, the substrate and this gripper position is maintained by appropriate machine control until the substrate has passed the machining gap between the two processing rollers 4 and 5 and introduced the intended cutting lines o. The like. In the substrate are. In Fig. 10 is shown with a dashed line a substrate 2 ', which has worked in its full arc length, the working gap 6' and after this processing a transfer described in more detail below or takeover takes place.

The system according to Fig. 10 is also provided for punching and breaking the invention, but the waste part 19 ( Fig. 5 ) is taken with this holding gripper 9 to the storage cylinder 55 out and by means of which gripper 55 'reaches the delivery conveyor 57. This delivery conveyor belt 57 is changed by the machine control in its conveying angle 56 so that a substantially horizontal conveying direction is adjustable, which in Fig. 10 becomes clear with a stroke representation. At the end of the delivery conveyor belt 57, the waste part 19 is taken over by the disposal device 20. For a punching operation displayed later by the machine control, the conveyor belt 57 can be swiveled back into the inclined position with little effort (arrow 56).

The device 1 "has subassemblies which can be used with the delivery device 18 and the delivery conveyor belt 57 and which offer a threefold display possibility without displacements of the components Benefit separate waste part be forwarded.

The device 1 "can be provided in an expanded version in the area of the processing rollers 4, 5 with a laser processing unit T provided for laser punching.

Claims (14)

1. Device for finishing and processing, in particular for cutting and punching of printed cardboard, cardboard packaging, corrugated board, paper or similar sheet like substrates (2) by means of a rotary punching process, wherein the substrate (2) can be inserted in the feed direction (A) between two rotating processing rollers (4, 5) and is processed during passage by tool portions (7, 8) which are effective in the working gap (6), in that the substrate (2) is separated into at least one waste portion (19) and at least one finished portion, wherein a processing roller (4) is provided with at least one gripper (9) for a registered-controlled transport of the sheet like substrate, characterized in that means for splaying and separating the finished portion from the waste portion (19) are provided at the discharge side of the working gap (6) and that the gripper (9) as a part of the means holds the waste portion (19) after the finishing process and away from the working gap (6) and that as a further part of the means at the discharge end of the working gap (6) a table (23) is provided, which at its receiving end (21) together with the lower processing roller (4) limits a passage gap (28) for the passage of the waste portion (19) occurred by means of the finishing, tightly held in the gripper (9).
2. Device according to claim 1, characterized in that the processing rollers (4, 5) cooperate with a delivery cylinder (55) which is disposed downstream thereof and receives the waste portion (19).
3. Device according to one of the preceding claims, characterized in that a discharge device (18) for accepting the finished portion and a disposing device (20) for accepting the waste portion (19) are disposed downstream of the processing rollers (4, 5).
4. Device according to one of the preceding claims, characterized in that a vacuum suction device (22) and/or a pressurized air system are disposed in the region of the end (21) facing the processing rollers (4, 5) to assist in separating the finished portion from the waste portion (19).
5. Device according to one of the preceding claims, characterized in that a laser processing unit (T) is disposed in the region of the processing rollers (4, 5).
6. Device according to claim 2, characterized in that the device is connected, in the region of the delivery cylinders (55), to a discharge conveyer band (57) whose conveying angle (56) can be adjusted.
7. Device according to one of the preceding claims, characterized in that a feed device (13) is disposed directly before the device at the reception side thereof by means of which the substrates (2) can be supplied in a registered manner.
8. Device according to one of the preceding claims, characterized in that a discharge device (18) which receives the finished portion and a disposing device (20) which receives the waste portion (19) are arranged downstream of the device.
9. Device according to claim 8, characterized in that the disposing device (20) has a vacuum suction unit (22) disposed in the region of the end (21) of the table (23) facing the processing rollers (4, 5) and/or a blowing air system for supporting separation of the finished portion from the waste portion (19).
10. Device according to claim 8 or 9, characterized in that the table (23) transports away the finished portions (27).
11. Device according to claim 2 and one of the preceding claims, characterized in that a waste portion (19) which has been processed over its entire length can be transferred to the delivery cylinder (55) through grippers (55').
12. Device for punching of printed substrates (2) through processing rollers (4, 5; 81, 82) according to one of the preceding claims, characterized in that the substrate (2) can be processed in the region of the processing rollers (4, 5; 81, 82) via a rolling stamped-line travel.
13. Device according to claim 12, characterized in that the processing rollers (4, 5; 81, 82) have a ratio of diameter to width of 1:1 or less, e. g. 1 : 1,2 ; 1 : 1,4.
14. Device according to one of the preceding claims, characterized in that both of the processing rollers (4, 5) have a register adjustment means (S, H, K) for adjusting the peripheral, the diagonal and the lateral register.

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