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Gripper driving device

A driving device and gripper technology, applied in printing, printing machines, sales/lease transactions, etc., can solve problems such as difficult, difficult to design cam surfaces, and many restrictions on cam surface design

Inactive Publication Date: 2003-10-15
RYOBI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, compared with the cam surface in the case of a single cylinder, there are more restrictions on the design of the cam surface, which also makes it very difficult to additionally form a simulated paper transfer portion on a cam surface.
[0017] In any case, there is a problem that it is difficult to design the cam surface by adding a simulated paper transmission part to the printing cam surface for controlling the movement of the gripper during printing.

Method used

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Embodiment Construction

[0032] Hereinafter, regarding an embodiment of the present invention, refer to the attached Figure one Although the description will be given above, overlapping descriptions are omitted for components that are the same as the above-mentioned conventional structure, and components that have substantially the same functions are given the same reference numerals.

[0033] in figure 1 The middle and upper pressure rollers 6 and 7 are double rollers at the same time, the paper transfer roller 8 and the turning roller 10 are also double rollers, and the paper storage roller 9 is a triple roller. Therefore, on the paper storage drum 9, a total of three grippers 11 and paper suction devices 12 are respectively arranged at intervals of approximately 120 degrees. The grippers 11 at the front end are arranged on the reversing roller 10, slightly 180 degrees opposite to each other, respectively, to grip the front end of a single sheet when printing on one side and the rear end of a sheet whe...

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Abstract

The printing press cylinder has grippers (11) for picking up sheets. The surface of a printer-cam defines a sheet-reception and sheet-transfer point. A cam follower runs over the surface of the cam as a result of the cylinder rotating. The cam follower's operation causes sheets to be received from an element upstream, and for the same sheets to be transferred to an element situated downstream. The surface of an adjusting cam enables an area reproducing a gripper status to be formed. The point on the surface of the adjusting cams are received and transferred is a different point from where the sheets are received and transferred. The surface of the cam on which the cam follower rests can be switched between the printer cam and adjusting cam surfaces.

Description

Technical field [0001] The present invention relates to a gripper drive device, in particular to a gripper drive device related to timing adjustment for transferring single sheets. Background technique [0002] Generally, in an offset cut-sheet printing press that uses cut-sheet paper as printing paper, various cylinders are provided with grippers that clamp the ends of the cut-sheet paper. [0003] For example, such as figure 1 The shown double-sided printing machine with switchable single-sided printing and double-sided printing is composed of a paper feeding unit 1, a printing unit 2, and a paper discharge unit 3. The printing unit 2 has two printing units 4 and 5. Between the two printing units 4 and 5, a paper receiving and transferring unit composed of a paper transfer cylinder 8 (first transfer cylinder), a paper storage cylinder 9 (second transfer cylinder), and a reversing cylinder 10 is provided, through which the receiving transfer unit The sheet paper is transferred ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F21/10B41F21/00B41F21/05
CPCG06Q30/06
Inventor 小森山哲也
Owner RYOBI