DE202009016341U1 - transfer cylinder - Google Patents

Abstract

Transfer cylinder of a printing unit of a printing press, with a built-in transfer cylinder clamping device for clamping a plurality of blanket plates on the transfer cylinder, characterized in that the clamping device comprises clamping means (15) in two in the circumferential direction of the transfer cylinder staggered and each in the axial direction of the transfer cylinder Clamping channels (16) of the transfer cylinder are integrated.

Description

The The invention relates to a transfer cylinder a printing unit of a printing press according to the preamble of the claim 1.

aid a transfer cylinder a printing unit of a printing press, namely by means of at least one on the transfer cylinder positioned transmission form, can print ink using an inking unit of the print engine at least one of a form cylinder of the same positioned printing form was applied, transferred to a substrate to be printed become. In transmission forms, on a transfer cylinder In principle, a distinction is made between blankets and Blanket plates, blanket plates also being called metal back blankets be designated. Blankets or Metal Back Blankets have one metallic carrier layer, being on the carrier layer one of the pressure transmission serving rubber layer is applied.

Blanket plates feature opposite blankets over the Advantage that with the same a smaller clamping channel for clamping the same on the transfer cylinder can be realized. The use of blanket plates is accordingly across from the use of blankets prefers.

Blanket plates feature but opposite Blankets over the Disadvantage that the production of the metallic carrier layer consuming and expensive, especially if large format Blanket plates on transfer cylinders with a great Diameter to be stretched.

Of these, The present invention is based on the object, a novel transfer cylinder to create a printing unit of a printing press.

These Task is by a transfer cylinder according to claim 1 solved.

According to the invention the tensioning device clamping means, which in two in the circumferential direction the transfer cylinder staggered and each in the axial direction of the transfer cylinder chip channels the transfer cylinder are integrated.

With The present invention is the first time a transfer cylinder suggested that over two in the axial direction of the same continuous and in order circumferential direction has the same mutually offset clamping channels, wherein in each clamping channel Clamping means for clamping blanket plates are integrated. hereby is it possible, despite a big one Diameter and thus circumference of a transfer cylinder on the same relative to arrange small format blanket plates. This reduces the effort to produce the blanket plates, namely the metallic carrier layer the same. As a result, an economical use of blanket plates or Metal Back Blankets even on transfer cylinders with a huge Circumference or diameter possible.

preferred Further developments of the invention will become apparent from the dependent claims and the following description. An embodiment of the invention is without limitation to be closer to the drawing explained. Showing:

1 a perspective view of a transfer cylinder according to the invention, and

2 : a detail of the transfer cylinder according to the invention.

The The present invention relates to a transfer cylinder of a printing unit a rotary printing machine, in particular a web-fed printing press, being in the transfer cylinder integrated a clamping device for clamping blankets is. Blankets are also referred to as metal blankets.

1 shows a perspective view of a transfer cylinder according to the invention 10 that has lateral pins 11 can be rotatably mounted in a machine frame, not shown.

2 shows a section of the transfer cylinder 10 together with on the same stretched blanket plates 12 , each of the blanket plates 12 over a metallic carrier layer 13 and one on the carrier layer 13 applied, the ink transfer serving rubber layer 14 features.

The transfer cylinder according to the invention 10 has, as already stated, a clamping device for tensioning the blanket plates 12 on the same, wherein the clamping device of the transfer cylinder according to the invention 10 clamping means 15 comprising, in two in the circumferential direction of the transfer cylinder 10 staggered and in the axial direction of the transfer cylinder 10 seen continuous span channels 16 are integrated. The transfer cylinder according to the invention 10 therefore has two in the axial direction of the transfer cylinder 10 through and in the circumferential direction of the same ver put clamping channels 16 , with each clamping channel 16 a clamping device 15 for blanket plates 12 assigned. The two in the axial direction of the transfer cylinder 10 continuous clamping channels 16 are in the circumferential direction thereof offset by 180 ° to each other.

On the transfer cylinder according to the invention 10 are accordingly in the circumferential direction of the same two blanket plates tensioned one behind the other. Seen in the axial direction of the same is preferably a blanket plate on the same tensioned, but it is also possible that in the axial direction a plurality of blanket plates are side by side tensioned on the same.

Regardless of whether in the axial direction a blanket plate or more blanket plates on the transfer cylinder 10 can be tensioned, two blanket plates in the circumferential direction in each case on the same tensioned.

In both in the axial direction of the transfer cylinder 10 continuous clamping channels 16 is in each case a leading edge 17 a first blanket plate 12 and a trailing edge 18 of a second blanket plate positioned circumferentially behind the first blanket plate 12 tensioned. The two in the same clamping channel 16 threaded ends or edges of the rubber blanket plates positioned one behind the other 12 are doing one and the same clamping means 15 in the clamping channel 16 tensioned.

Due to the fact that the transfer cylinder according to the invention 10 over in the axial direction and circumferentially offset from each other clamping channels 16 has small-sized blanket plates and thus small-sized, metallic carrier plates 13 for the blanket plates 12 be used. This reduces the effort for the production of blanket plates 12 , This makes an economical use of blanket plates 12 on transfer cylinders 10 possible with a large diameter or a large circumference.

LIST OF REFERENCE NUMBERS

10

transfer cylinder

11

spigot

12

Blanket plate / Metal Back Blanket

13

backing

14

rubber layer

15

clamping means

16

chip channel

17

leading edge

18

trailing edge

Claims (6)

Transfer cylinder of a printing unit of a printing press, with a built-in transfer cylinder clamping device for clamping a plurality of blanket plates on the transfer cylinder, characterized in that the clamping device clamping means ( 15 ), which in two in the circumferential direction of the transfer cylinder offset from each other and in the axial direction of the transfer cylinder through each continuous chip channels ( 16 ) of the transfer cylinder are integrated. transfer cylinder according to claim 1, characterized in that on the same in the circumferential direction two blanket plates are tensioned one behind the other. transfer cylinder according to claim 2, characterized in that on the same in the axial direction a blanket plate is tensioned. transfer cylinder according to claim 2, characterized in that on the same in the axial direction several blanket plates are side by side tensioned. Transfer cylinder according to one of claims 1 to 4, characterized in that the two in the axial direction of the transfer cylinder each continuous clamping channels ( 16 ) are offset in the circumferential direction of the transfer cylinder by 180 ° to each other. Transfer cylinder according to claim 5, characterized in that in each case in the axial direction of the transfer cylinder continuous through ducts ( 16 ) at least one leading edge each ( 17 ) a first blanket plate ( 12 ) and at least one trailing edge ( 18 ) a second, in the circumferential direction behind the first blanket plate positioned blanket plate ( 12 ) is tensionable.

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