Device for automatically adjusting paper breaking angle of web

Abstract

The invention provides a device for automatically adjusting a paper breaking angle of a web. The invention aims to solve the problems that in the prior art, the front paper edge and the side paper edge of sheet paper cannot be cut into a right angle from the web, and the printing multi-color precise overprinting requirement cannot be met. The device is characterized in that the device comprises aweb paper breaking device, a web flattening device, web conveying rollers and a sheet paper conveying device, the web paper breaking device comprises a knife rest base, a knife rest, a paper breakingrotary knife, a fixed lower knife, a photoelectric sensor, a web side gauge, a driven rack, a driving gear and a motor, the knife rest are installed on the knife rest base, one side of the knife restis hinged to the knife rest base, the other side of the knife rest is movably matched with the knife rest base, the paper breaking rotary knife is arranged on the knife rest in a rotating matching mode, the fixed lower cutter is installed on the matching position of the knife rest, one side of the knife rest is provided with a cantilever, the photoelectric sensor is mounted on the cantilever, theweb side gauge is arranged on one side of the cantilever where the cantilever is located, a detection light beam of the photoelectric sensor is irradiated downwards, and the motor is in drive connection with the other side of the knife rest through the driving gear and the driven rack.

Description

technical field [0001] The invention relates to a cutting device for roll paper, in particular to a device for automatically adjusting the cutting angle of roll paper. Background technique [0002] Paper production often requires cutting webs into flat sheets. In order to meet the multi-color overprint accuracy requirements of the printed pattern, it is necessary to require that the bite of the sheet paper (front paper edge) and the gauge edge (side paper edge) be at right angles (90°). In the traditional printing process, the processing enterprise or printing factory must manually cut the sheet paper to be printed before printing on the machine. It is a right angle, which not only increases the processing steps and processing costs, but also affects the improvement of production efficiency. At present, there is no device that can automatically cut the front edge of the paper and the side edge of the paper into a right angle (90°) when the roll paper is cut into flat sheet...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome that there is no device that can automatically cut the front edge of the paper and the side edge of the paper into a right angle (90°) when the roll paper is cut into a flat sheet, the existing equipment automatically cuts the flat sheet The problem of not being able to meet the requirements of multi-color accurate overprinting of printed patterns, the purpose of the present invention is to provide an improved device for automatically adjusting the angle of web breakage, which can overcome the defects of the prior art

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