EP1277576A2 - Printing machine and method for mechanically acting on a sheet material - Google Patents

Abstract

To the surface of the cylinder (20) carrying the rubber offset printing blanket, at least one e.g. stamped sheet (22) is attached. It is preferably tensioned against the cylinder, and carries out mechanical processing of the printed paper sheet. A protector (34) is placed on the surface of the counterpressure cylinder (30).

Description

Technical field

The present invention relates to one for mechanical action, such as for printing, for perforating, for embossing, for creasing, for slitting, cutting, punching or the like, on at least one sheet of material, in particular on at least one Paper sheets, laid out printing machine, in particular sheet printing machine, comprising at least one printing unit with at least one Blanket cylinder and with at least one impression cylinder.

Furthermore, the present invention relates to a method for mechanical Impact, such as for printing, perforating, embossing, for creasing, slitting, cutting, punching or the like, on at least one sheet of material, in particular on at least one a paper sheet, by means of at least one printing machine, in particular by means of at least one sheet printing machine.

State of the art

In conventional printing machines, especially conventional ones Sheetfed printing machines, especially conventional sheetfed offset presses, it is known to perforate sheets in one machine pass, to emboss, crease, cut, punch and / or print.

For example, there is a method in the document DE 44 35 307 A1 for perforating, punching or the like in a sheetfed offset machine disclosed; In this process, the substrate is fed into one Finishing work perforated and / or embossed and / or grooved and / or cut and / or punched and subsequently printed; is also in the Document DE 44 35 307 A1 for performing this method Device described in which the finishing unit in front of the first printing unit is arranged.

Although the method described above as well as the one described above Device a possibility of mechanical action on one Sheets of material, in particular on a sheet of paper; is nevertheless subject to a printing press just with such a mechanical Exposure to increased loads and increased contamination the wear and tear of those involved in the exposure process Components are undesirably accelerated.

Presentation of the invention: task, solution, advantages

Based on the disadvantages and shortcomings outlined above is the object of the present invention, a Printing machine and a method for mechanical action to provide at least one sheet of material in which an increased Wear and increased wear of those involved in the exposure process Components of the printing press in durable and reliable Way to be avoided.

This object is achieved by a printing press with the specified in claim 1 Features and by a method with the in claim 22 specified features solved. Advantageous configurations and Expedient developments of the present invention are in the respective Subclaims marked.

According to the teaching of the present invention is therefore on the surface of the blanket cylinder at least one action plate for mechanical, preferably provided rotative action on the material sheet. This action plate, which is essential to the invention as at least a preferably stretched on the surface of the blanket cylinder Punching plate can be formed, which has for the mechanical action provided any shape, for example (circle) round and / or oval and / or polygonal areas, which can be achieved by means of the Action plate can be punched out of the material sheet.

The specialist in the field of printing technology will in this connection especially appreciate that the positioning of the Action plate on the surface of the blanket cylinder by means of at least a clamping device assigned to the blanket cylinder in The direction of sheet travel - even when standing - can be corrected. Here, the present invention take advantage of the essential property that the length of the action plate advantageously in approximately the length of the for Blanket cylinder provided rubber blanket corresponds.

It also becomes the expert in the field of printing technology to the present invention as positive that the pressure supply after driving back according to an advantageous development of the present Invention can be increased gradually or continuously as far as there is a clean mechanical action on the material sheet.

To further increase wear and tear and wear of the components of the printing press involved in the action Avoiding in a permanent and reliable manner is according to the invention at least one for protection on the surface of the impression cylinder of the impression cylinder before the action of the action plate Protective device arranged.

This protective device can be used as at least one protective plate, in particular as at least one protector sheet (with an exemplary thickness on the order of about 0.2 millimeters), or as at least one Be plastic film.

In this context, it is advisable to use the protective device at least one adhesive, in particular by means of at least one in particular double-sided adhesive film to be attached to the impression cylinder so that the protective device due to the mechanical action of the action plate withstands the increased loads caused and above all does not replace.

To further increase wear and tear and wear the components of the printing press involved in the action of contamination in a permanent and reliable manner to avoid, according to a particularly inventive development present printing machine at least one suction device for Extraction of waste arising from mechanical action Sheet of material provided, which is preferably the impression cylinder is assigned and even easily rest or sit on it can.

To ensure that the suction device works properly and properly the suction device can ensure on the impression cylinder appropriately hood-shaped and / or funnel-shaped be trained. Not only, but also with such a hood-shaped and / or funnel-shaped design can be an excellent Suction effect of the suction device can be achieved, that the broadside of the suction device facing the impression cylinder at least a portion of the impression cylinder, preferably assigned to approximately the entire width of the impression cylinder becomes.

The above-described suction effect to eliminate the mechanical Acting (perforating, embossing, creasing, slitting, cutting, Punching or the like) resulting waste from the material sheet can according to a preferred embodiment of the present invention can be optimized by the suction device with one or more rotating brushes, in particular with one or more rotating brushes Scraper brushes.

To increase the efficiency of the brushes, these can be used on each other facing away from the outside of the suction device to each other be arranged. Regardless of this or in connection with this, the Suction device on its broad side facing the impression cylinder have at least one, in particular curved, exhaust pipe.

To the flexibility of the printing press according to the present invention to increase and to further improve their manageability is the Suction device in particular by means of at least one fastening rail expediently attached to at least one step plate. Here, the mounting rail can have at least one slot for horizontal and / or vertical adjustment of the suction device, so that this depends on the respective working conditions the position of the impression cylinder can be adapted.

In order to provide adequate suction power for the suction device to provide, the suction device is advantageous with at least a suction device, for example with at least one side channel compressor, connected. For transporting the extracted material waste should at least between the suction device and the suction device a flexible channel or at least one flexible pipe or at least a flexible hose can be arranged as a connection. In connection to the suction device, it is recommended that the mechanical Exposed waste in at least one preferably solid Container, in at least one press, in at least one sack or in to release the like.

Finally, increased wear and tear and increased wear of the components of the printing press involved in the action Avoiding it permanently and reliably is procedural favorable during mechanical action on the material sheet generated waste almost simultaneously with or shortly after lead mechanical action away from the material sheet, in particular suck off by means of at least one suction device. The special advantageous procedure is that the removal of rotative separated waste or punched waste from a sheet of material becomes possible. The removal of the waste can advantageously at the same time as the action, in particular with the separating or Punching process.

The new procedure is based on the type and sequence of the overall printing process independently. Therefore, the process can be both "in-line" as well as being used "offline", also on one or Multi-color sheet-fed offset printing machines.

Brief description of the drawings

Fig. 1

in perspektivischer Ansicht ein erstes Ausführungsbeispiel einer Druckmaschine gemäß der vorliegenden Erfindung;

Fig. 2

in perspektivischer Ansicht das Druckwerk der Druckmaschine aus Fig. 1;

Fig. 3

in Querschnittansicht den Gummituchzylinder und den Gegendruckzylinder des Druckwerks aus Fig. 2;

Fig. 4

in perspektivischer Ansicht ein zweites Ausführungsbeispiel einer Druckmaschine mit zugeordneter Absaugeinrichtung gemäß der vorliegenden Erfindung;

Fig. 5

in perspektivischer Ansicht das Druckwerk der Druckmaschine mit zugeordneter Absaugeinrichtung aus Fig. 4;

Fig. 6

in Querschnittansicht den Gummituchzylinder und den Gegendruckzylinder des Druckwerks mit zugeordneter Absaugeinrichtung aus Fig. 5;

Fig. 7

in Aufsicht die Absaugeinrichtung aus Fig. 4 bis 6; und

Fig. 8

in Querschnittansicht entlang der Schnittlinie VII - VII in Fig. 7 die Absaugeinrichtung aus Fig. 7.

Further refinements, features and advantages of the present invention are explained in more detail below with reference to the two exemplary embodiments illustrated by FIGS. 1 to 8. Show it:

Fig. 1

a perspective view of a first embodiment of a printing press according to the present invention;

Fig. 2

in perspective view the printing unit of the printing press of Fig. 1;

Fig. 3

in cross-sectional view the blanket cylinder and the impression cylinder of the printing unit from Fig. 2;

Fig. 4

a perspective view of a second embodiment of a printing press with an associated suction device according to the present invention;

Fig. 5

in perspective view the printing unit of the printing press with associated suction device from Fig. 4;

Fig. 6

in cross-sectional view the blanket cylinder and the impression cylinder of the printing unit with an associated suction device from FIG. 5;

Fig. 7

in supervision the suction device from Figures 4 to 6; and

Fig. 8

7 shows the suction device from FIG. 7 in a cross-sectional view along the section line VII - VII in FIG. 7.

The same or similar configurations, elements or features are in Figures 1 to 8 provided with identical reference numerals.

Best way to carry out the invention

1 to 3 show a first exemplary embodiment of a printing press 100 (= so-called "two-color Heidelberg Speedmaster in Format IIIB ") shown with printing unit 10; with such a rotary sheet offset machine is a rotary punch of any shape (for example circular, oval, polygonal, etc.) possible.

A punched sheet 22 is required for the first exemplary embodiment (cf. Figure 3: Such stamping plates 22 are from different manufacturers in different designs for rotary punching, slitting, creasing and the like), the length of which corresponds to the length of the for relevant blanket cylinder 20 (see FIGS. 2 and 3) usual blanket essentially coincides, and an approximately 0.2 millimeter thick Protector plate 34 (see FIG. 3) to protect the surface of the impression cylinder 30 (see FIGS. 2 and 3).

This equipment according to FIGS. 1 to 3 is already sufficient for rotary Punching, slitting and punching with breakpoints. Here the breakpoints prevent that the punching waste is already fall out in the printing press 100.

For punching, the punching plate 22 is opened instead of the rubber printing blanket the blanket cylinder 20 tensioned so that with the help of the blanket tensioner Stand corrections in the direction of sheet travel are also possible are. The protector plate 34 is by means of a double-sided adhesive film 32 (see FIG. 3) glued to the impression cylinder 30. The provision of printing will be fully retracted and gradually increased until a clean one Punching or slitting is achieved.

FIGS. 4 to 8 show a second exemplary embodiment of a printing press 100 (= so-called "two-color Heidelberg Speedmaster in Format IIIB ") shown with printing unit 10; with such a rotary sheet offset machine is also a rotary punching out of any Shapes (for example, circular, oval, polygonal, etc.) under one Removal or simultaneous suction from the paper sheet punched parts possible during the work or printing process.

A punched sheet 22 is required for the second exemplary embodiment (cf. Figure 6: Such stamping plates 22 are from different manufacturers in different designs for rotary punching, slitting, creasing and the like), the length of which corresponds to the length of the for relevant blanket cylinder 20 (see FIGS. 5 and 6) usual blanket essentially coincides, and a plastic film 34 '(cf. Figure 6) to protect the surface of the impression cylinder 30 (see 5 and 6).

In contrast to the second embodiment (cf. FIGS. 4 to 8) to the first embodiment (see FIGS. 1 to 3) - punchings An extraction device is used without stopping points 40 needed, which is able to cut the resulting waste from Vacuum paper sheets.

Such a suction device has an intake funnel 40 (cf. figures 5 to 8: width about 1,000 millimeters, height about 400 millimeters), the is provided with a rotating brush 44 (cf. FIGS. 5 to 8) with that of the suction funnel 40 easily on that provided with the plastic film 34 ' Impression cylinder 30 rests. Furthermore, the suction device 40 on their facing the impression cylinder 30, about 1,000 mm wide broadside 42 with a curved exhaust pipe 50 provided (see FIG. 7).

The suction funnel 40 is fastened to a step plate 60 (cf. FIG. 5). It is advantageous here for the fastening rails 46 to have elongated holes 48 to provide to adjust the suction funnel 40 horizontally and vertically to be able to. The suction funnel 40 is by means of a flexible tube 70 (cf. Figures 4 to 6: diameter about 150 millimeters) with a side channel compressor 80 (see FIGS. 4 and 5) or with a similar one, a strong one Absorbing device connected.

Here, the suction funnel 40 points in the direction from the connection to the flexible Pipe 70 towards its counter-pressure cylinder 30 Broadside 42 has a conically tapering shape (see FIG. 8). The extracted waste comes from the side channel compressor 80 released in a sack 90 (see FIGS. 4 and 5).

LIST OF REFERENCE NUMBERS

100

press

10

printing unit

20

Blanket cylinder

22

Einwirkblech

30

Impression cylinder

32

adhesives

34, 34 '

guard

40

suction

42

Broad side of the suction device

44

brush

46

mounting rail

48

Long hole

50

blow pipe

60

Trittblech

70

flexible pipe

80

suction device

90

bag

Claims (26)

For mechanical action, such as for printing, for perforating, for embossing, for creasing, for slitting, for cutting, for punching or for the like, designed on at least one sheet of material, in particular on at least one sheet of paper Printing machine (100), in particular sheet-fed printing machine, comprising at least one printing unit (10) with at least one blanket cylinder (20) and with at least one impression cylinder (30),
characterized in that on the surface of the blanket cylinder (20) at least one action plate (22), in particular at least one punching plate, is provided, in particular tensioned, for mechanical action on the material sheet, and that at least one protective device (34, 34 ') is provided on the surface of the impression cylinder (30) to protect the impression cylinder (30) from the action of the action plate (22). Printing machine according to claim 1, characterized in that the positioning of the action plate (22) on the surface of the blanket cylinder (20) can be corrected in the sheet travel direction by means of at least one tensioning device assigned to the blanket cylinder (20). Printing machine according to claim 2, characterized in that the positioning of the action plate (22) can also be corrected when stationary. Printing machine according to at least one of claims 1 to 3, characterized in that the length of the action plate (22) corresponds approximately to the length of the blanket provided for the blanket cylinder (20). Printing machine according to at least one of Claims 1 to 4, characterized in that the protective device (34, 34 ') is designed as at least one protective plate (34), in particular as at least one protector plate, or as at least one plastic film (34'). Printing machine according to claim 5, characterized in that the mudguard (34) has a thickness of the order of about 0.2 millimeters. Printing machine according to at least one of claims 1 to 6, characterized in that the protective device (34, 34 ') can be attached to the impression cylinder (30) by means of at least one adhesive (32). Printing machine according to claim 7, characterized in that the adhesive (32) is designed as at least one, in particular double-sided, adhesive film. Printing machine according to at least one of claims 1 to 8, characterized in that at least one suction device (40) is assigned to the counter-pressure cylinder (30) for suctioning off waste arising from mechanical action from the material sheet. Printing machine according to claim 9, characterized in that the suction device (40) lies or sits lightly on the impression cylinder (30). Printing machine according to claim 9 or 10, characterized in that the suction device (40) is hood-shaped and / or funnel-shaped such that the broad side (42) of the suction device (40) at least a portion of the impression cylinder (30), preferably approximately the entire Width of the impression cylinder (30) is assigned. Printing machine according to at least one of claims 9 to 11, characterized in that the suction device (40) is provided with at least one rotating brush (44), in particular with at least one rotating scraping brush. Printing machine according to claim 12, characterized in that the brushes (44) are arranged offset on the outside of the suction device (40) facing away from one another. Printing machine according to at least one of Claims 9 to 13, characterized in that the suction device (40) has at least one, in particular curved, outlet pipe (50) on its broad side (42) facing the impression cylinder (30). Printing machine according to at least one of claims 9 to 14, characterized in that the suction device (40) is attached to at least one tread plate (60), in particular by means of at least one fastening rail (46). Printing machine according to claim 15, characterized in that the fastening rail (46) has at least one elongated hole (48) for horizontal and / or vertical adjustment of the suction device (40). Printing machine according to at least one of claims 9 to 16, characterized in that the suction device (40) is connected to at least one suction device (80). Printing machine according to claim 17, characterized in that at least one flexible channel or at least one flexible tube (70) or at least one flexible hose is arranged as a connection between the suction device (40) and the suction device (80). Printing machine according to claim 18, characterized in that the suction device (80) is designed as at least one side channel compressor. Printing machine according to at least one of claims 1 to 19, characterized in that the waste resulting from the mechanical action can be released into at least one container, into at least one press, into at least one sack (90) or the like. Printing machine according to at least one of claims 1 to 20, characterized in that the pressure provided can be increased step by step or continuously after retraction until a clean mechanical action takes place. Process for mechanical action, such as for printing, perforating, embossing, creasing, slitting, cutting, punching or the like, on at least one sheet of material, in particular on at least one sheet of paper, by means of at least one printing machine (100), in particular by means of at least one sheet printing machine,
characterized in that the waste generated during the mechanical action on the material sheet is carried away almost simultaneously with or shortly after the mechanical action from the material sheet. A method according to claim 22, characterized in that the waste is sucked off by means of at least one suction device (40). A method according to claim 22 or 23, characterized in that the material sheet is acted on by rotation. Method according to at least one of claims 22 to 24, characterized in that any shapes are punched out of the sheet of material. A method according to claim 25, characterized in that the punched out areas (circle) are shaped round, oval, angular or the like.

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