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A method for controlling the cross-section precision of a printing machine

A control method and printing machine technology, applied to the general parts of printing machinery, printing machines, rotary printing machines, etc., can solve the problems that affect the machine's cross-section cutting accuracy, yield rate, registration deviation, etc., and achieve the reduction of overprint error , the effect of improving the accuracy

Active Publication Date: 2016-08-24
GUANGDONG ALICE PACKAGE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for controlling the cross-section accuracy of the printing machine, so as to solve the problem of the registration deviation caused by the change of the tension of the whole machine in the existing cross-section machine, which affects the cross-section cutting accuracy and yield of the machine

Method used

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  • A method for controlling the cross-section precision of a printing machine

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Experimental program
Comparison scheme
Effect test

Embodiment

[0030] Step 1, collect the position of the color mark and the position of the cutter

[0031] Start the online cross-cutting machine of the printing machine, initially set the traction tension as 550N, and set the speed as 30m / min. During the speed-up process, the 30m / min locking position of the color registration system will shift. During this process, the color registration system detects the position of the color mark by the photoelectric eye 7 and the encoder position signal of the cross-cutting knife roller 1;

[0032] Step 2, calculate the position deviation

[0033] Compare the position of the color mark detected by the photoelectric eye 7 in step 1 and the real-time position signal of the encoder of the transverse knife roller 1, and compare it with the position at a speed of 30m / min, and calculate the position deviation δ between the two;

[0034] Step 3, analyze the deviation value and calculate the tension adjustment value

[0035] Analyze the position deviation v...

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Abstract

The invention discloses a method for controlling online transection precision of a printing press. The method specifically comprises the following steps that firstly, a color code position and a cutter position are collected; secondly, the positional deviation is calculated; thirdly, the deviation value is analyzed, and the tension adjusted value is figured out; fourthly, the speed of a motor is adjusted, and control of transection precision of the printing press is completed. The overprinting error of a transection cutter roll can be reduced through adjustment of tension between transaction traction and final color printing, and register control precision of the transection cutter roll and the yield of products of the complete printing press are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of printing machinery and control, and relates to a method for controlling the online cross-section accuracy of a printing machine. Background technique [0002] There is a production process in the printing of cigarette packs: roll material printing → sheet cutting, the cutting accuracy requirement of the cross section is ±0.1mm, and the cutting mark follows the printing color mark; the existing cutting accuracy control method of the cross section is: Traversing traction works in tension mode and synchronous control mode, which can be switched between each other. In tension control mode, the target value of tension cannot be adjusted automatically; in synchronous mode, the traversing knife roller works in synchronous mode. After comparison, the registration deviation is calculated, and the phase of the cross-cutting knife is adjusted to control the cutting accuracy at ±0.1mm; in the prior art, when the mach...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F13/60B41F33/16
Inventor 赵李孝
Owner GUANGDONG ALICE PACKAGE CO LTD