EP2080600A1 - Flat bed stamping module for stamping a printed item and flat bed stamp - Google Patents

Abstract

The module (12) has a lower platen (28) movable by a drive relative to a frame-fixed upper platen (26) for the execution of a punching stroke (H) for punching a printing substrate that is passed between the platens, so that the lower platen is engageable to the upper platen. The printing substrate is processable by a punching tool. A printing substrate transport device (16) guides the printing substrate and is mounted on the lower platen in a fixed manner. The printing substrate transport device is provided as an indention group that exhibits a driven indention roller. An independent claim is also included for a flatbed punch for processing a printing substrate.

Description

The invention relates to a flat bed punching module for punching a printing material, with an upper crucible and a saucer, which by means of a drive relative to the frame-fixed upper crucible for performing a punching stroke for punching the passing between the upper crucible and the saucer printing substrate movable, so that the saucer is set to the upper crucible , whereby the printing material can be processed by means of at least one punching tool, and with at least one printing material transporting device for guiding the printing material, as well as a flatbed punch.

A widely used class of flat-bed punching modules includes a frame-fixed upper crucible and a movable towing saucer, through the interaction of which a printing material located between the crucibles can be punched. Both during insertion and during the execution of the substrate to be punched, for example, a substrate to be perforated or partially trimmed Bedruckstoff waves can arise in the substrate from a certain height - height difference between wave crests and troughs - can lead to material accumulation. The stability and speed of production can be affected.

While with additional, frame-mounted or movable relative to the saucer Bedruckstoffleitelementen (passive guides), such as with a channel-like executed material rocker at the inlet or with guide rails, which are adhered to a recorded on the saucer Gegenrillplatte, is responding only to the symptom occurring, is a Improvement to combat the cause of the problem occurring, to compensate for the relative movement between the saucer and upstream or downstream assemblies needed.

Object of the present invention is to provide a compensation for the occurring by the cyclically varying punching stroke of the moving saucer height offset relative to the substrate in a flat bed punching module.

This object is achieved by a flat bed stamping module with the features of claim 1. Advantageous developments of the invention are characterized in the dependent claims.

According to the invention, a flat bed punching module for punching a printing material, an upper crucible and a saucer, which by means of a drive relative to the frame-fixed upper crucible for performing a punching stroke for punching the passing between the upper crucible and the saucer printing substrate movable, so that the saucer is set to the upper crucible, whereby the printing material can be processed by means of at least one punching tool, and at least one printing material conveying device for guiding the printing material, in particular for introducing or discharging the printing material, which is firmly held on the movable undercover.

In the flat-bed stamping module according to the invention, the height offset occurring is compensated for, so that a straightforward application of force is made possible in an advantageous consequence when introducing the printing substrate. The linear thrust reduces lateral forces on the stamped substrate. This makes it more stable and can be accelerated faster. The number of creases and embossments on the cutting tools have less influence on the production speed, since the substrate can better push from the creasing channels or relationship male, which may be located on the counter-crease plate. In the flat-bed stamping module according to the invention, the printing substrate can be accelerated faster without damaging the printing material or disturbing the subsequent processing steps due to out-flying waste pieces or loose use. In this way, an increase in the production speed can advantageously be achieved.

Advantageously, a shortening of the setup times can be achieved because less optimization effort is required in terms of the right type and number of material webs of the printing material.

The connection between a part of the unprinted printing material and a stamped part of the printing material (for example, a sheet which still hangs on a web over a number of material webs) can be provided with fewer material webs. In this way, the stamped part easier to separate from the still-stamped substrate easier. The risk that a printed product or a group of printed products is not undesirably separated by a sheet separator is reduced. Punching is less prone to buckling of the substrate (upcurl or downcurl). In an advantageous consequence less material jams are to be expected.

Finally, less material webs are needed to stabilize the stamped substrate, so that a better quality of punched printed products can be achieved.

The saucer can also be called a punching table. The guide through the printing material transport device can be active and / or the printing material fixing and / or driven in particular. The printing material can be web-shaped. The printing material may in particular already be printed, wherein the flat stamping module can serve for punching out individual or groups of printed products, for example folding boxes, out of the printing substrate surface. More precisely, the punching in the flat punch module according to the invention can lead to a cutting and / or perforation and / or scoring of the printing material, so that the individual or groups of printed products are initially connected to one another via material webs, before they are broken off in a subsequent step by severing the remaining material webs become.

According to the invention, a flat-bed stamping module is understood to mean not only a flat-bed stamping module which can process a printing material by punching, perforating and / or grooving, ie has tools for cutting, perforating or scoring or can record. A flatbed stamping module may also be a flatbed stamping module. In a flat-bed embossing module according to the invention, a printing substrate can in particular be embossed or finished with foil or with relief engraving. In particular, the film can be applied in a hot foil stamping process or in a cold foil stamping process. Under Reliefschnittgravur the application of a film, in particular hot foil, while embossing understood. The at least one punching tool may in particular be a cutting blade, a creasing blade, an embossing die or an embossing die.

The printing material may in particular be paper, paperboard, cardboard, an organic polymer film or a composite consisting of several materials, for example a material laminated by polymer film or metal foil (for example paper, in particular printed material). The printing material can in particular be made of a material other than metal (objects made of metal only, for example sheets, plates or strands), of glass, of semiconductor material or of ceramic.

The at least one printing material transport device can in particular be attached to the undercounter or fixedly connected to the undercounter or integrated into the undercounter. At least one part of the printing material transport device, for example a receiving element, can also be a part of the undercover, for example its frame, in embodiments of the flat-bed stamping module according to the invention.

In a number of advantageous embodiments of the flat-bed stamping module according to the invention, the at least one printing-material conveying device is a draw-in group. The intake group serves to supply the printing material to the stamping gap formed by the upper crucible and undercounter, in particular, the position of the moving printing material can be guided in a controlled manner. The intake group can be driven in particular. The drive of the pick roller can be done intermittently. Specifically, the collection group may have a driven pick roller. In advantageous developments of these embodiments, the intake group of the flat bed punching module according to the invention to the intake roller or to the The lateral surface of the feed roller partially embracing printing material comprises engagable Anstellrollen. The employment can be done for example pneumatically. Furthermore, the drive of the pick roller may include a servomotor.

Alternatively or additionally, in a number of advantageous embodiments of the flat-bed stamping module according to the invention, the at least one printing-material conveying device can be a sheet separator. A sheet separator is used to singulate or complete separation of a piece of the printing material, which is only partially separated from the printing material except for individual webs of material. In other words, either in a further series of advantageous embodiments of the flat bed punching module according to the invention, the at least one printing material transport device can be a sheet separator or an embodiment of a flat bed stamping module according to the invention can also have a feed group as the first printing material transport device according to the invention and a sheet separator as a second printing material transport device according to the invention. A sheet separator can be referred to by the skilled person as a kicker.

In an advantageous further development of these embodiments, a transport unit downstream of the flat-bed stamping module according to the invention, in particular a sheet transport unit, can be attached to the sheet separator by means of a pivotally mounted articulation point. The transport unit may in particular be arranged directly downstream of the flatbed stamping module. In particular, the transport unit can be rotatably mounted on the outlet side in a fixed frame. In other words, the transport unit may be rotatable and pivotally mounted on the sheet separator and perform a rocking motion.

In addition or alternatively, an embodiment of the flat-bed punching module according to the invention may at least have the further features individually or in combination with one another:

The saucer may additionally have firmly attached Bedruckstoffleitelemente which allow in particular a passive guidance of the printing material. The drive of the flatbed of the flatbed punch module may include one or more connecting rods driven by a crankshaft. The flat bed stamping module according to the invention, more precisely its intake or its inlet part, may be preceded by a web storage device. The web storage device may in particular be arranged directly in front of the flat bed punching module. During the operation of the flatbed punching module, a web storage device serves to temporarily receive a continuously supplied printing material web, which is fed in an intermittent motion to the flatbed stamping module.

In advantageous developments, the web storage device may comprise a pivotally mounted web storage roll. Further, or alternatively, the web storage device may comprise a servomotor for effecting the pivotal movement of the web storage roll, or the web storage roll may be connected to the drive of the undercover by means of a mechanical gear for performing the pivotal movement, or the web storage roll may be eccentrically mounted.

In the context of the inventive idea is also a flat bed punch for processing a printing material web, in particular a solid cardboard web. The flat bed punch according to the invention comprises at least one web inlet part, a transport unit, in particular a sheet transport unit, a breakout unit, a user separation unit and a product display. It is characterized in that it comprises at least one flatbed stamping module with features or feature combinations according to this representation.

Figur 1

eine schematische Ansicht einer erfindungsgemäßen Flachbettstanze mit einem erfindungsgemäßen Flachbettstanzmodul,

Figur 2

eine Schnittzeichnung einer vorteilhaften Ausführungsform des erfindungsgemäßen Flachbettstanzmoduls mit fest am Untertiegel aufgenommener Einzugsgruppe und fest aufgenommenen Bogentrenner, und

Figur 3

eine Detailzeichnung der Einzugsgruppe in der in Figur 2 gezeigten vorteilhaften Ausführungsform.

Further advantages and advantageous embodiments and developments of the invention will be apparent from the following description with reference to the accompanying figures. It shows in detail:

FIG. 1

a schematic view of a flat bed punch according to the invention with a flat bed stamping module according to the invention,

FIG. 2

a cross-sectional view of an advantageous embodiment of the flat bed punching module according to the invention with recorded on the saucer subtraction group and firmly recorded sheet separator, and

FIG. 3

a detailed drawing of the collection group in the in FIG. 2 shown advantageous embodiment.

The FIG. 1 shows a schematic view of a flat-bed punch 10 according to the invention with a flat-bed stamping module 12 according to the invention. The embodiment of the flat-bed punch 10 shown has a modular construction in a horizontal construction. The processing of a printing material web, for example, printed on a solid cardboard cartons, takes place in this view through the modules from right to left: Coming from a web inlet part 14, the printing substrate 24 enters the flatbed punching module 12, in which the printing material 24 is cut such that in subsequent processing steps, on the one hand, individual sheets can be separated from the printing substrate web 24 and, on the other hand, individual printed products are broken out of the printing material web 24 and can be separated from one another. The separation into individual sheets takes place already at the outlet of the flat bed punching module 12. The separated sheets enter a breakout unit 18 and a blanking unit 20 via a flatbed punching module 12 downstream transport unit 20 in which the printed products are separated from the trimming and separated. The printed products are then laid out in a product display 22.

The FIG. 2 is a sectional view of an advantageous embodiment of the flat bed punching module 12 according to the invention with fixedly on the movable saucer 28 recorded intake group 38 and firmly recorded sheet separator 56. In the left part of the image FIG. 2 Furthermore, the immediately downstream transport unit 16 is shown. The flatbed stamping module comprises a frame-fixed or immovable Upper crucible 26 which, in cooperation with a movable undercover 28, can punch a printing material web 24 located between the upper crucible 26 and the undercover 28. The saucer 28 (also referred to as a punching table) can by a drive 32 means in this embodiment, two crankshafts 34 and four connecting rods 36, of which in the view of FIG. 1 two are concealed, perform a cyclic or oscillating punching stroke H. The punching stroke H is typically about 20 mm.

At the bottom plate 28 is on the one hand a collection group 38 (see also the FIG. 3 ) recorded. The intake group 38 carries out the punching stroke H with the saucer 28. The intake group 38 comprises an intermittently driven intake roller 40. The intermittent movement may also be referred to as a start-stop movement. During the actual punching process, the pressing of saucer 28 against the upper crucible 26, the movement profile may have a resting phase. The draw-in group 38 of the flat-bed punching module 12 is immediately preceded by a web storage device 48 along the path of the printing material web 24. Web storage device 48 includes a web storage roll 50, also referred to as a leader roll. The servomotively oscillating driven web storage roller 50 is pivotable about a pivot point 52 in the web inlet part 14 of the flatbed punch 10 (see FIG. 1 ). The web storage device 48 along the path of the printing substrate 24 is immediately upstream of a train group 54 for the printing substrate 24, which is continuously driven by a servo motor.

On the saucer 28 on the other a sheet separator 56 is firmly recorded. The sheet separator 56 also performs the punching stroke H with the saucer 28. In cooperation of an upper roller 58 and a lower roller 60 punched sheets, which are not yet completely separated from the printing substrate 24, detected and accelerated so that the remaining after punching material webs break and the separated sheets can be further transported isolated. Via a pivot point 62 (at the same time a linear guide) of the sheet separator 56 is the conveyor belt frame 64 about the pivot point 66, which are located in the fixed frame 68 of the transport unit 16, pivotable. When the sheet separator 56 moves up and down in accordance with the punching stroke H, the transport belt frame 64 performs a rocking motion.

The FIG. 3 refers in detail to the pull-in group 38 oscillating in the vertical direction with the punching stroke H in the in FIG. 2 shown advantageous embodiment. In this illustration, first the feed roller 40 can be seen, which is driven by a servo motor 42. Anstellrollen 44, here by way of example three individual Anstellrollen 44, for fixing the position of the printing material web 24 can be employed at the extending over the feed roller 40, not shown here printing material 24. The adjusting rollers 44 are actuated with pneumatic cylinders 46 for on and off. The printing material contacting surface of the adjusting rollers 44 is minimized for various reasons as possible. For example, damage to the printed image located on the printing material can be avoided. Any existing embossing should not be flattened. Also, the lowest possible mass or inertia is advantageous because of the highly dynamic intermittent motion to be performed. The servo motor 42, the adjusting rollers 44 and the pneumatic cylinder 46 move cyclically with the whole, attached to the saucer 28 feed group 38th

LIST OF REFERENCE NUMBERS

10

Diecutter

12

Flatbed punching module

14

Web inlet part

16

transport unit

18

Fugitive unit

20

Blanking unit

22

product display

24

printing material

26

upper platen

28

lower platen

32

drive

34

crankshaft

36

connecting rod

38

intake assembly

40

feed roller

42

servomotor

44

Anstellrolle

46

pneumatic cylinder

48

Web storage device

50

Web storage roller

52

Pivot point of the web storage roll

54

traction group

56

sheet separator

58

upper roller

60

lower roller

62

articulation

64

Conveyor frame

66

pivot point

68

fixed frame

H

punching stroke

Claims (13)

Flat-bed punching module (12) for punching a printing material, comprising an upper crucible (26) and an undercurrent (28), which by means of a drive (32) relative to the frame-fixed upper crucible (26) for performing a punching stroke (H) for punching between the upper crucible ( 26) and the bottom plate (28) passing printing material movable so that the saucer (28) to Obertiegel (26) is adjustable, whereby the substrate is processed by means of at least one punching tool, and at least one printing material for guiding the printing material,
characterized,
the at least one printing material transport on the movable lower platen (28) is fixedly received. Flat bed stamping module (12) according to claim 1,
characterized,
the at least one printing material transport device is a feeder group (38). Flat bed stamping module (12) according to claim 2,
characterized,
in that the intake group (38) has a driven intake roller (40). Flat-bed stamping module (12) according to claim 2 or 3,
characterized,
in that the intake group (38) comprises adjusting rollers (44) which can be set against the intake roller (40). Flat bed stamping module (12) according to claim 3 or 4,
characterized,
in that the drive of the intake roller (40) comprises a servomotor (42). Flat bed stamping module (12) according to claim 1,
characterized,
the at least one printing material transport device is a sheet separator (56). Flat bed stamping module (12) according to claim 7,
characterized,
in that a transport unit (16) arranged downstream of the flat-bed stamping module (12) is attached to the sheet separator (56) via a pivotally mounted articulation point (62). Flat-bed stamping module (12) according to claim 6 or 7,
characterized,
that the transport unit (16) is rotatably mounted in the outlet side in a fixed frame (68). Flat-bed punching module (12) according to one of the preceding claims,
characterized,
in that the drive (32) of the cover (28) comprises a connecting rod (36) driven by a crankshaft (34). Flat-bed punching module (12) according to one of the preceding claims,
characterized,
in that a web storage device (48) is arranged upstream of the flatbed punching module (12). Flat bed stamping module (12) according to claim 10,
characterized,
that the web storage device (48) comprises a pivotally mounted web storage roller (50). Flat-bed stamping module (12) according to claim 10 or 11,
characterized,
that the web storage device (48) comprises a servomotor for carrying out the Pivoting movement of the web storage roll (50) or that the web storage roll (48) by means of a mechanical transmission for performing the pivoting movement with the drive (32) of the cover (28) is connected or that the web storage roll (48) is mounted eccentrically. Flatbed punch (10) for processing a printing material web (24), with at least one web inlet part (14), a transport unit (16), a breakout unit (18), a pay dividing unit (20) and a product delivery (22),
marked by
at least one flatbed stamping module (12) according to one of the preceding claims.

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