EP1264686A1 - Printing device - Google Patents

Abstract

The printing mechanism includes a first platen cylinder (1) to print one side of a web (10), and a first inking mechanism (4) with inking rolls (3), movable between a working position with at least one of the inking rolls contacting the first platen cylinder, and a rest position with no rolls in contact with it. The mechanism includes a platen handling device (9) which can move to the working position of the inking mechanism when this mechanism is in its rest position.

Description

The present invention relates to a printing unit according to the preamble of claim 1.

Furthermore, the present invention relates to a method for carrying out a Plate change or an imaging process according to claim 9.

US Pat. No. 5,025,726 describes a printing press with a movable inking unit, where an inking unit for a satellite printing machine automatically from the printing unit is removable when it is in a decoupled position, and automatically with the printing press can be connected when it receives an engagement command. The Plate cylinders of the printing press are made in a conventional manner with printing plates Mistake.

US 5,640,906 describes a multi-color web-fed rotary printing press with less Height at which the printing units are arranged vertically one above the other in a bridge design and are stored in horizontally adjustable frame sections. The inking units are movable together with their respective pressure cylinder on a common frame.

It is an object of the present invention to provide a printing unit and a method create with which a plate change or an imaging process on simple Way is made possible.

It is a further or alternative object of the present invention, a printing unit and to create a method which involves a plate change or Enable imaging process in a limited or confined space.

This object is achieved by a printing unit with the features of claim 1 and solved a method with the features of claim 9. Other features of the Invention are contained in the subclaims.

A printing unit according to the invention with a first plate cylinder, a first Blanket cylinder for printing on a first side of a material web, and with one first inking unit, which has a variety of inking unit rollers for inking the first Includes plate cylinder, the first inking unit between an operating position in which at least one of the inking rollers of the first inking the first plate cylinder contacted, and a rest position in which none of the inking rollers the plate cylinder contacted, can be moved, is characterized in that a plate handling unit is essentially movable into the operating position of the inking unit when that Inking unit is in the rest position.

The plate handling unit can e.g. b. as an imaging device or one automatic plate changing device can be designed and can now Perform the operation on the plate cylinder while the inking unit is in the Rest position. When using the device in a printing press with vertical or other arrangement of the printing units can in this way Coloring the plate cylinder and space required to apply printing plates be reduced because the same range for both functions, i.e. for coloring and for Plate change / images, is used.

The term "plate cylinder" here denotes any image-bearing cylinder and closes plate cylinders for flat or sleeve-shaped printing plates as well as directly imageable cylinders. Is it a plate cylinder for flat ones Printing plates, the plate handling device is preferably as one automatic plate changing device. Is it a direct one? imageable cylinder, the plate handling device is preferably as one Imaging device designed, e.g. a laser for imaging the Includes plate cylinder.

The inking unit, which comprises the large number of inking unit rollers, can be carried out on one slide be moved as he z. B. is described in US 5,025,726.

The plate cylinder and the blanket cylinder can be rotated in a central Frame section can be stored, and the inking rollers can be rotated in a first Be mounted frame section that is movable with respect to the central frame section is.

In addition, a second plate cylinder, a second blanket cylinder for Printing on a second side of the material web, and a second inking unit with one Large number of second inking rollers for inking the second plate cylinder be provided, the second inking unit between an operating position in which at least one of the inking rollers contacts the plate cylinder, and one Rest position, in which none of the inking rollers contact the plate cylinder, can be moved and wherein a second plate handling unit is substantially in the second Operating position of the second inking unit is movable when the second inking unit is in the rest position.

The first plate cylinder, the first blanket cylinder, the second plate cylinder and the second blanket cylinders are preferably rotatable in a central frame section added, and the second inking unit is preferably in a second Mounted frame section which is movable relative to the central frame section.

In the operating position of the inking unit, preferably at least one of the contacts Inking unit rollers the plate cylinder, and at least one of the second inking unit rollers contacts the second plate cylinder in the operating position of the second inking unit.

Furthermore, a dampening unit connected to the central frame section for the plate cylinder and one that is also connected to the central frame section second dampening unit can be provided for the second plate cylinder. Alternatively, the However, dampening systems also with the movable first or second frame section be connected and so together with the associated inking unit a part of each Define the operating position.

To support the removal of the cylinders or rollers, a Winch or crane can be provided.

The plate cylinder and the second blanket cylinder are preferably in one similar horizontal plane.

A common drive motor can be used for the plate cylinder and the blanket cylinder be provided. However, individual drives for the plate cylinder and the Blanket cylinders can be provided. The blanket cylinder and the second Blanket cylinders can be driven by a common drive motor while the plate cylinder and the second plate cylinder each have a single one Have drive motor. The motors can be driven by one of the drive motors of the Plate cylinder or the blanket cylinder are driven. It is also possible to drive the inking units by at least one single drive motor.

Furthermore, there is preferably a travel mechanism for the movable side frame, i.e. the first frame section and the second frame section are provided, e.g. on motorized mechanism with a supporting the movable sections Rail system. A linear motor can be used to move the movable sections be used.

The blanket cylinders can work together to print on both sides of a web. Instead of a second blanket cylinder, however, an impression cylinder can also be used be provided so that the web is printed on only one side.

A method according to the invention for performing a plate change or Imaging process on a plate cylinder, which by means of a in a Operating position on the circumference of the plate cylinder ink is supplied is characterized in that the inking unit from the plate cylinder into a Rest position is that a plate handling device essentially in the operating position on the circumference of the plate cylinder in the vicinity of the plate cylinder is moved, and that by means of the plate handling device on the plate cylinder Plate change or an imaging process is carried out.

Further features and advantageous embodiments of the present invention are described in the following description of preferred exemplary embodiments using the attached drawings listed below.

Fig. 1

eine Seitenansicht einer Rollenrotationsdruckmaschine mit erfindungsgemäßen Druckwerken;

Fig. 2-6

eine Seitenansicht eines erfindungsgemäßen Druckwerks, wobei sich Farbwerke bezüglich eines Plattenzylinders in verschiedenen Positionen befinden.

Show it:

Fig. 1

a side view of a web-fed rotary printing press with printing units according to the invention;

Fig. 2-6

a side view of a printing unit according to the invention, wherein inking units are in different positions with respect to a plate cylinder.

Fig. 1 shows a side view of a web-fed rotary offset printing machine with four Printing units according to the invention. Each printing unit comprises a first plate cylinder 1, which can have a channel for fastening at least one offset printing plate. It However, it can also be a for sleeve-shaped printing plates or for direct Act pictures of suitable plate cylinders. On a first blanket cylinder 2 can an axially removable and sleeve-shaped or a flat rubber blanket can be arranged. A second blanket cylinder 12 forms one with the first blanket cylinder 2 Transmission gap through which a web 10 is passed. To transfer one Print image on the second blanket cylinder 12 is a second plate cylinder 11 intended.

The blanket cylinders 2, 12 and the plate cylinders 1, 11 are in a central Frame section 5 rotatably added. A winch 20 or a crane 20 can do that Support changing one or more of cylinders 1, 2, 11, 12.

A first frame section 6 and a second frame section 8, in which the inking units 4 and 14 are arranged, are movable with respect to the central frame section 5, in particular, movable essentially perpendicular to the plane of the material web 10 or slidable or movable. The inking unit 4 comprises inking unit rollers 3 and guides it Plate cylinder 1 color when at least one of the inking rollers 3 den Plate cylinder 1 contacted. This is achieved in that the first frame section 6 moves in the direction of the central frame section 5 and thus an operating position of the Inking unit 4 is defined. The inking unit 14 comprises inking unit rollers 13 in order to similarly coloring the plate cylinder 11.

In Fig. 1, the inking units 4, 14 are shown in their rest position. In this position you can a trained here as an automatic plate changing device Plate handling device 9, 19 are in a position e.g. the Operating position of the inking unit 4 corresponds. In this way, one on the Plate cylinder 1, 11 arranged flat pressure plate can be replaced. The Plate handling device 9, 19 can also function as a laser imaging unit be formed, which images the plate cylinder 1, 11 when this as a direct imageable cylinder is formed. As a rule, the Plate handling devices 9, 19 may be similar, e.g. both as laser imaging units. Furthermore, the space between the moved first offers Frame section 6 and the central frame section 5 to the machine operator easy access to the plate cylinder 1 and the inking unit 4, so that it e.g. Carry out maintenance work or replace cylinders or rollers. This work can be supported by the winch or crane 20. The same applies to the room between the frame section 8 and the central frame section 5.

Fig. 2 shows the inking units 4, 14 in a position in which they are assigned to the respective Contact plate cylinder 1, 11.

For each plate cylinder 1, 11 with the central frame section 5 (Fig. 1) or one of the two movable side sections 6, 8 connected dampening unit 30, 32 be provided (Fig. 5).

In the position shown in Fig. 2 images from the plate cylinder 1, 11 on the corresponding blanket cylinder 2, 12 and then on opposite sides the material web 10 transferred. The inking units 4, 14 are therefore in the Operating position while the plate handling units 9, 19 from the plate cylinders 1, 11 are turned off. The plate handling units 9, 19 can e.g. in the central Frame section 5 can be stored and can be in a rest position above or are located below or to the side of the inking units 4, 14. The Plate handling units 9, 19 can therefore be more advantageous in their rest position Ways to be stored where space is available and do not need to be nearby be arranged on the respective plate cylinder surface. You can e.g. by means of a Drive unit is pivoted or moved linearly into its respective operating position, which z. B. can correspond to the operating position of the respective inking unit 4, 14.

As shown in FIGS. 3 and 4, the inking units 4, 14 can then be moved from the respective Plate cylinder 1, 11 removed or parked and moved to a rest position or be moved. The plate handling units are then moved into positions which e.g. can correspond to the operating positions of the respective inking unit 4, 14, and can operate the plate cylinders 1, 11 in these positions make. The devices 9, 19 can at similar positions at the beginning of the carry out the operating process for the assigned cylinders 1, 11, e.g. a plate change, in which circumferential positions the respective inking unit 4, 14 a coloring of the assigned cylinder 1, 11. A "similar position on the perimeter of the Cylinder "according to the definition used here includes a position in which the Handling devices 9, 19 act on the respective plate cylinder 1, 11 and which are located inside or near the space between the inking units 4, 14 and the respective plate cylinder.

After the plate handling devices 9, 19 have started their operation, e.g. the Replacing the pictures or plates on the plate cylinders 1, 11 on the Plate cylinders 1, 11 have ended, they are moved to their rest position, as shown in Fig. 5 and 6 is shown. Then the inking units 4, 14 can be returned to their operating position are moved in which the inking rollers roll the respective plate cylinders 1, 11 to contact.

List of reference numbers

1

first plate cylinder

2

first blanket cylinder

3

Inking rollers

4

first inking unit

5

central frame section

6

first movable frame section

8th

second movable frame section

9

Slab handler

10

web

11

second plate cylinder

12

second blanket cylinder

13

Inking rollers

14

second inking unit

19

Slab handler

20

winch

30

dampening

32

dampening

Claims (10)

Printing unit with a first plate cylinder (1), a first blanket cylinder (2) for printing on a first side of a material web (10), and with a first inking unit (4) which has a plurality of inking unit rollers (3) for inking the first plate cylinder (1 ), the first inking unit (4) between an operating position in which at least one of the inking unit rollers (3) of the first inking unit (4) contacts the first plate cylinder (1), and a rest position in which none of the inking unit rollers (3) contacts the Plate cylinder (1) contacted, can be moved,
characterized in that a plate handling device (9) is provided which can be moved substantially into the operating position of the inking unit (4) when the inking unit (4) is in its rest position. Printing unit according to claim 1,
characterized in that the plate handling device (9) is designed as an automatic plate changing device. Printing unit according to claim,
characterized in that the plate handling device (9) is designed as a device for directly imaging the cylinder (1). Printing unit according to one of the preceding claims,
marked by
a second plate cylinder (11), a second blanket cylinder (12) for printing on a second side of the material web (10), and a second inking unit (14) with a plurality of second inking unit rollers (13) for inking the second plate cylinder (12), wherein the second inking unit (14) can be moved between an operating position in which at least one of the inking unit rollers (13) contacts the plate cylinder (11) and a rest position in which none of the inking unit rollers (13) contacts the plate cylinder (11), and wherein a second plate handling unit (19) is provided which can be moved substantially into the second operating position of the second inking unit (14) when the second inking unit is in the rest position. Printing unit according to claim 4,
characterized in that the first plate cylinder (1), the first blanket cylinder (2), the second plate cylinder (11), and the second blanket cylinder (12) are rotatably received in a central frame section (5), that the first inking unit (4) in the first frame section (6) and that the second inking unit (14) is mounted in a second frame section (8), the first and the second frame section (6, 8) being movable with respect to the central frame section (5). Printing unit according to one of claims 1 to 4,
characterized in that the plate cylinder (1, 11) and the blanket cylinder (2, 12) are rotatably mounted in a central frame section (5), and in that the inking unit rollers (3, 13) are rotatably mounted in a first frame section (6, 8) are, which is movable with respect to the central frame section (5). Printing unit according to one of the preceding claims,
marked by
a dampening unit (30, 32) connected to the central frame section (5) or the movable frame section (6, 8) for the plate cylinder (1, 11). Printing unit according to one of the preceding claims,
marked by
a winch (20) arranged above the printing unit to support the removal of a cylinder and / or a roller. Method for carrying out a plate change or an imaging process on a plate cylinder (1, 11), which is located in an operating position on the circumference of the plate cylinder (1, 11)
Inking unit (4, 14) ink is supplied,
characterized in that the inking unit (4, 14) is placed in a rest position by the plate cylinder (1, 11), that a plate handling device (9, 19) essentially in the operating position on the circumference of the plate cylinder (1, 11) in the vicinity of the Plate cylinder (1, 11) is moved, and that a plate change or an imaging process is carried out on the plate cylinder (1, 11) by means of the plate handling device (9, 19). Printing machine, in particular web-fed rotary printing machine,
marked by
a printing unit according to one of claims 1 to 8.

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