Tension control device of flexographic printing press

Abstract

The invention provides a tension control device of a flexographic printing press. The tension control device comprises a first supporting roller and a second supporting roller, and also comprises a shaft base, an adjusting roller, a sliding base, a compression spring, an anti-breaking mechanism and a fixed base, wherein the shaft base is slidably arranged on a main frame; the adjusting roller is rotationally arranged on the shaft base; a printing substrate is sequentially wound on the first supporting roller, the adjusting roller and the second supporting roller; the sliding base is slidably arranged on the main frame; the compression spring is arranged between the sliding base and the shaft base; the anti-breaking mechanism is used for preventing the printing substrate from breaking due to excessive instantaneous tension; the anti-breaking mechanism comprises a moving base, a propping block, an impact rod and a linkage assembly; the moving base is slidably arranged on the main frame;the impact rod is telescopically arranged on the moving base; the propping block is movably arranged on the front side of the moving base through the linkage assembly; the propping block abuts againstthe tail end of the sliding base; the fixed base is fixedly arranged on the main frame; the fixed base is connected with an adjusting knob; and a screw rod of the adjusting knob abuts against the moving base. The tension control device of the flexographic printing press provided by the invention can effectively avoid the breakage of the printing substrate due to excessive instantaneous tension.

Description

technical field [0001] The invention relates to a flexible printing machine, in particular to a tension control device of the flexible printing machine. Background technique [0002] Flexographic printing machine is a kind of printing equipment, which is suitable for printing cellophane, PET, PVC, PE, aluminum foil, roll paper, etc. Its printed products have the advantages of thick ink layer, rich layers, and strong three-dimensional effect. [0003] The published patent CN205970323U discloses a unit-type flexible printing machine, which includes a main frame, an unwinding device, a roll-in traction device, a printing unit, a drying box device, and a winding device. Roll traction device, printing unit, drying box device to winding device, traction cooling device is set between drying box device and winding device, which has the advantages of simple structure and high printing efficiency. However, during printing, the tension of the printing material is unstable, especially ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a tension control device for a flexible printing machine, which solves the problem that the tension of the printing material is unstable when the existing flexible printing machine is printing, especially when the tension of the printing material exceeds the acceptable range of the printing material. The problem that the printing material will break

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