Discharging small tail length cutting control method for printing equipment

Abstract

The invention discloses a discharging small tail length cutting control method for printing equipment. The method specifically comprises the following steps that before the printing equipment runs, parameters are set on a human-computer interface; the printing equipment is started and accelerated, the linear velocity V of a host is calculated, and an old material collecting roll runs according to the velocity V; discharging cutting preparation is made; the cutting press roller discharging time T<press> and the cutter discharging time T<cutter> in the discharging cutting process are calculated, and the average unit of T<press> and T<cutter> is s; and discharging small tail length cutting is achieved according to obtained T<press> and T<cutter>. When a discharging part of the printing equipment is used for roll replacement material collecting, the pressing distance of a material collecting press roll on a new roll and the cutting tail length are small, and therefore the aims of improving the overprinting precision and lowering printing waste losses in the discharging cutting process are achieved.

Description

technical field [0001] The invention belongs to the technical field of printing equipment control, and relates to a control method for discharging short tail and long cutting of printing equipment. Background technique [0002] Cutting tail length: after the cutting is completed, the length from the tape of the new reel to the old reel. In the existing double-station discharging printing equipment, the cutting action of the discharging unit is as follows: press the "preparation for material receiving" button, the rotary frame will automatically rotate, and the cam on the rotary shaft acts on the travel switch during the rotary process, so that the cutting The cutting arm falls, and the slewing frame stops rotating after reaching the material receiving position. At this time, the new roll is at the material receiving position, and the pre-drive starts after a delay of 2S. When the axis speed of the new and old materials is synchronized, the synchronization indicator light is ...

AI Technical Summary

Problems solved by technology

This cutting method has the following problems: 1. During the unwinding and cutting process, the pressure of the receiving pressure roller on the new roll will affect the overprinting accuracy, and the longer the pressing time, the greater the impact

In cutting, before cutting the old coil with the material receiving knife, the material receiving pressure roller must be pressed on the new roll at least once, which causes a large overprint deviation during cutting and increases the cutting waste rate; 2. The cutting tail length of the material has a great relationship with the position of the paste surface reflector when the operator is preparing for cutting.

Images