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Single sheet paper transferring roller

A transfer roller, sheet-fed technology, used in the direction of shipping and packaging, printing, printing presses, etc.

Inactive Publication Date: 2002-08-28
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the known sheet-fed transport cylinders of this type there is the problem that, depending on how much the second comb segment is rotated relative to the first comb segment, a larger or smaller gap is produced between the teeth of the comb segment. Interstices through which air flows from the inside to the outside of the sheet-fed transfer cylinder under the action of centrifugal force

Method used

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  • Single sheet paper transferring roller
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Examples

Experimental program
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Embodiment Construction

[0012] exist figure 1 shows a tandem sheet-fed rotary printing press with a sheet feeder 1, with printing units 2, 3 for printing sheet-fed substrates according to the offset printing method, with a printing unit 2, 3 3 between an overturning device 4 and a sheet-fed delivery device 5 .

[0013] Each printing unit 2 , 3 comprises an impression cylinder, a blanket cylinder and an opposing impression cylinder 6 , 7 . The turning device 4 has three sheet-sheet transport cylinders 8 , 9 , 10 arranged between opposing impression cylinders 6 , 7 . The sheet-fed transfer cylinder 9 acts as a so-called storage cylinder and holds the sheet-fed printing material firmly on its leading edge by means of its gripper system. The sheet-fed transfer cylinder 10 acts as a so-called reversing cylinder (Wendetrommel) and by means of its gripper system grabs a rear edge of the sheet-fed substrate in order to turn it over and remove it from the sheet-fed transfer drum. 9 up and down.

[0014] A...

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PUM

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Abstract

The sheet-fed conveyor drum (9) comprises a first (11) and second (12) comb segment. Gaps (15) between the teeth (14) of the comb segments are covered by at least one covering sheet (19) which is pneumatically operated and inflatable in the form of a tube, bellow or balloon. A turning arrangement incorporates a sheet-fed conveyor drum as turning drum.

Description

technical field [0001] The invention relates to a sheet-fed transport cylinder of the type specified in the preamble of claim 1 in a sheet-fed printing machine, the sheet-fed transport cylinder comprising a first comb-like segment and a second comb-like segment, the The second comb section is mounted rotatably relative to the first comb section for adjustment to a format length corresponding to the sheet-fed printing material. Background technique [0002] In the known sheet-fed transport cylinders of this type there is the problem that, depending on how much the second comb segment is rotated relative to the first comb segment, a larger or smaller gap is produced between the teeth of the comb segment. Interstices through which air flows from the inside to the outside of the sheet-fed transfer cylinder under the action of centrifugal force. Undesirable air escape from the sheet transfer rollers can cause uncontrolled sheet-fed substrates to cover these gaps during transfer ...

Claims

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Application Information

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IPC IPC(8): B41F21/10B65H5/12
CPCB41F21/106
Inventor 克里斯蒂安·希贝
Owner HEIDELBERGER DRUCKMASCHINEN AG
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