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Method for automatically acquiring initial reeling and unreeling radius of reel material printing equipment

A technology of printing equipment and automatic acquisition, which is applied to general parts of printing machinery, printing, printing machines, etc., can solve problems such as errors and low efficiency, achieve obvious errors, low efficiency, and improve equipment automation and production efficiency Effect

Inactive Publication Date: 2015-04-15
XIAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for automatically obtaining the initial radius of the rewinding and unwinding of the web printing equipment, which solves the problems of low efficiency and obvious errors in the direct measurement method

Method used

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  • Method for automatically acquiring initial reeling and unreeling radius of reel material printing equipment
  • Method for automatically acquiring initial reeling and unreeling radius of reel material printing equipment
  • Method for automatically acquiring initial reeling and unreeling radius of reel material printing equipment

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Embodiment

[0070] Assume that the servo motor encoders of all units are 17-bit encoders, that is, the number of pulses output by the encoder for one rotation of the servo motor is 2 17 = 131072 pulses, so B s =B q =B f =131072; Radius R of driving roller of unwinding traction unit 2 q = 100mm.

[0071] After going through the above steps (1) to (7), the read encoder value M of the servo motor of unwinding traction unit 2 q and the encoder value M of the servo motor of the winding unit 5 s are 1022261 and 801465 respectively, then according to formula (4):

[0072] The initial radius of the unwinding drum is:

[0073] R f = R q M q B q = 100 × 1022261 131072 ≈ 779.92 ( mm ) ...

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Abstract

The invention discloses a method for automatically acquiring initial reeling and unreeling radius of reel material printing equipment. The method for automatically acquiring the initial reeling and unreeling radius of the reel material printing equipment includes that feeding manually, guaranteeing that there is no material belt redundancy between an unreeling traction unit, an n-color printing unit and a reeling traction unit, eliminating the material belt redundancy of the unreeling region and the reeling region, emptying encoder values of servo motors of each unit, forwardly rotating the servo motor of the unreeling unit by one circle, recording the encoder value thereof, re-eliminating the material belt redundancy of the unreeling region and the reeling region, respectively recording the encoder values of the servo motor of the unreeling traction unit and the servo motor of the unreeling unit, and calculating the initial radius of an unreeling and reeling roller according to a material belt length conservation principle. The method for automatically acquiring the initial reeling and unreeling radius of the reel material printing equipment solves the problems of low efficiency and obvious error of a direct measurement method, improves the equipment control precision, and improves the automatic degree and production efficiency of the equipment.

Description

technical field [0001] The invention belongs to the technical field of automatic control of web printing equipment, and in particular relates to a method for automatically obtaining the initial radius of rewinding and unwinding of web printing equipment. Background technique [0002] At present, according to the transmission mode of the roll-type printing equipment, the printing equipment can be divided into two types: mechanical long-axis transmission printing equipment and shaftless transmission printing equipment. In the mechanical long axis printing equipment, the power of each printing unit comes from the main motor, through a mechanical long axis, and then the mechanical mechanism such as crankshaft, gear, cam, ratchet, pulley, crank connecting rod, etc. transmits the power to each part, and This ensures that the movement of each unit is synchronized. However, in the mechanical long-axis transmission mode, the system transmission has limited precision and lack of flex...

Claims

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Application Information

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IPC IPC(8): B41F13/02B41F33/16
Inventor 刘善慧马利娥刘琳琳陈一军刘定强
Owner XIAN UNIV OF TECH
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