Offsetting printer

A technology of printing presses and racks, applied in printing presses, rotary printing machines, rotary printing machines, etc., which can solve the effects of printing quality stability and consistency, the inability to maintain bottom rollers and ink transfer systems, and the cost of letterpress printing machines Advanced problems, to achieve the effect of stable printing quality, good consistency and low cost

Inactive Publication Date: 2012-10-17
广州市奈本印刷机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By using a separate motor to drive the bottom roller and the ink transfer system, even if the motor speed control accuracy is high, it cannot always maintain a constant speed ratio between the bottom roller and the ink transfer system, and the stability and consistency of printing quality will be affected to a certain extent , Moreover, the version roller, the bottom roller and the ink transfer roller are all driven by their own separate motors, and the cost of the letterpress printing machine is also high

Method used

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  • Offsetting printer
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Examples

Experimental program
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Embodiment Construction

[0012] A letterpress printing machine such as figure 1 , figure 2 , image 3 , including a version roller 2 fixed on the frame 1, a bottom roller 3 located below the version roller, and an ink transfer mechanism 4 that transfers ink to the version roller. The version roller 2 and the bottom roller 3 are driven by different motors. The bottoms on both sides of the roller 3 are inclined planes 5, which are supported on the wedge-shaped block 6 at the bottom, and the wedge-shaped block is screwed on the screw rod 7 at the bottom of the frame 1. Consistent slope 8, rotating screw rod 7 wedge-shaped block moves along the screw rod direction, the slope at the bottom of the bottom roller slides relative to the slope at the top of the wedge-shaped block, so that the bottom roller is raised or lowered; The ink roller 42 clamps the version roller 2 from both sides of the upper part of the version roller 2, and at the same time is close to the ink roller 41 and the version roller 2, a...

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PUM

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Abstract

The invention discloses a relief printing machine. A printing roller is driven by a motor; a bottom roller is driven by another motor; the bottom roller drives an ink transmission mechanism through a synchronous transmission mechanism; the height position of the bottom roller is adjustable; two sides of a roller core of each of two ink transmission rollers in the bottom of an ink vibrating rollerof the ink transmission mechanism are inserted into cambered tracks of two sides of a stand homocentric with the ink vibrating roller respectively; and the roller core is driven by a drive mechanism to carry the ink transmission roller to move along the cambered track. The dimension of the printing roller can be changed without being limited by a tooth form of a gear of the bottom roller and the ink transmission mechanism; and the dimension of the printing roller realizes continuous change. Simultaneously, the transmission ratio of the synchronous transmission mechanism is fixed so as to keepconstancy of the rotational speed ratio of the bottom roller to the ink transmission system; and the relief printing mechanism has stable printing quality and good consistency.

Description

Technical field: [0001] The present invention relates to a letterpress printing machine. Background technique: [0002] In the existing letterpress printing machine, its ink transfer mechanism, plate roller and bottom roller are driven by the same motor, and the plate roller, bottom roller and ink transfer mechanism are driven by gears meshing with each other, and the driving motor simultaneously drives the above-mentioned parts to rotate to realize printing. When changing the version roller, the gear on the side of the version roller after replacement also needs to be meshed with the gear on the bottom roller and the gear on the ink transfer mechanism at the same time. Limited by the tooth profile of the two gears, the size of the version roller that can be replaced will be limited. Limitation, can not achieve continuous change, can not achieve stepless adjustment. In order to achieve stepless adjustment, the plate roller, the bottom roller and the ink transfer mechanism c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F5/00B41F13/008B41F31/10B41F13/20B41F13/36B41F31/34
Inventor 骆建国
Owner 广州市奈本印刷机械有限公司
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