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Precision overprinting mechanism of unit-type flexo machine

A flexo printing machine and unit-type technology, applied in printing, printing machines, rotary printing machines, etc., can solve problems such as film slipping, affecting printing quality, and inappropriateness

Active Publication Date: 2014-07-09
ZHEJIANG FANGBANG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, flexographic printing is not suitable for stretchable printing materials such as plastic films, because there is light pressure contact between the plate roller and the bottom roller, and the smaller the contact pressure, the smaller the elastic deformation of the outer circle of the plate roller. It is beneficial to improve the quality of flexographic printing, but the smaller the contact pressure, the smaller the tension of the film during flexographic printing, so that the film is easily affected by stretching instability and slips between the plate roller and the bottom roller , which seriously affects the printing quality

Method used

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Embodiment Construction

[0011] The accompanying drawings show the technical solution of the present invention and its embodiments, and the relevant details and working principles of the embodiments will be further described below in conjunction with the accompanying drawings.

[0012] As shown in the figure, the precision overprinting mechanism of the unit type flexo printing machine of the present invention includes a version roller 1, a bottom roller 2 and a pressure roller 3, and the bottom roller 2 is arranged below the version roller 1. During printing work, the version roller 1 and the bottom roller There is light pressure or even zero pressure contact between the two. The pressure roller 3 is movable under the bottom roller 2, and the movement of the pressure roller 3 is promoted by the cylinder 6 (the specific structure is: the pressure roller 3 is installed on the swing rod 4, The swing rod 4 is swingingly set, and one end of the swing rod 4 is connected to the cylinder 6), and the cylinder 6...

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Abstract

The invention discloses a precision overprinting mechanism of a unit-type flexo machine. The precision overprinting mechanism comprises a roller and a base roller. The base roller is arranged below the roller, and slightly contact with the base plate during printing. The precision overprinting mechanism is characterized in that a pressing roller is arranged below the base roller; the pressing roller is arranged movably, is pushed through a pneumatic element, and contacts with the base roller during printing; a print length adjusting device is arranged on a feeding and conveying channel before a print is pressed through the roller for printing and is driven through a motor; a photoelectric tracker is arranged on a discharging and conveying channel after the print is printed; the motor is controlled according to output of the photoelectric tracker. The precision overprinting mechanism is designed for high-quality flexo printing for films, and is adaptive to flexo printing for paper.

Description

technical field [0001] The invention relates to a flexographic printing machine, in particular to a precise overprinting mechanism of a unit type flexographic printing machine. Background technique [0002] Unit type flexographic printing machine is the most popular type used in the world today. Its structural feature is that each printing unit is independent of each other and arranged in a straight line along the horizontal direction. The main motor is located at the rear of the die-cutting unit with the largest load, and then transmitted to other units through a shared drive shaft at the rear of the machine. power. Flexographic printing is different from gravure, letterpress and screen printing. Its biggest feature is the light pressure contact between the plate roller and the bottom roller during printing (that is, the printing contact pressure is small, or even zero contact pressure), which belongs to light pressure printing, so for Flexographic printing is very suitab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F5/24
Inventor 方顺杰
Owner ZHEJIANG FANGBANG MACHINERY
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