Charging short tail length cutting control system and method for printing equipment

Abstract

The invention discloses a charging short tail length cutting control system for printing equipment. The system comprises a programmable logic controller. The programmable logic controller is connected with a frequency converter a, a frequency converter b and a frequency converter c through a main industrial Ethernet cable. The frequency converter a is connected with a motor a and an old material receiving roll in sequence. The frequency converter a and the motor a are connected with an encoder a. The frequency converter b is connected with a motor b and a rotation shaft in sequence. The frequency converter c is connected with a motor c and a new charging roll in sequence. The motor c and the frequency converter c are connected with an encoder b. Cutting pressing rollers are mounted on a cutting mechanism. An induction block and a detection sensor are arranged on a central spindle of the new charging roll. The detection sensor is connected with the programmable logic controller. Cutting adhesive tape is arranged at the edge of the new charging roll. The invention further discloses a charging short tail length cutting control method for the printing equipment. The purposes of improving the printing chromatography precision and lowering the rejection rate in the charging and cutting processes are achieved.

Description

technical field [0001] The invention belongs to the technical field of printing equipment control, and relates to a control system for discharging short tail and long cutting of printing equipment, and also relates to a control method for discharging short tail and long cutting by using the above-mentioned system. Background technique [0002] Cutting tail length: after the cutting is completed and the old and new rolls are pasted together, the length from the tape of the new roll head to the cut old roll head. [0003] 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 ...

AI Technical Summary

Problems solved by technology

[0004] During the execution of the discharging and cutting action of the above-mentioned printing equipment, the cutting arm, cutting pressure roller, and cutting knife are controlled by different solenoid valves to complete their respective actions to realize the conversion of printing materials between old and new rolls. However, the existing 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 overprint accuracy, the longer the pressing time, the greater the impact, and the During cutting, before the receiving knife cuts the old roll, the receiving roller must press the new roll at least once, which causes a large overprint deviation during cutting and increases the cutting waste rate; (2) unwinding The length of the cutting tail and the position of the paste surface reflector are very important when the operator is preparing for cutting. When the angle between the paste surface reflector and the tape is appropriate, the tail length is relatively small; Circumference; cutting tail length affects the overprint accuracy of printing equipment, the longer the tail length, the greater the impact on overprint accuracy

Images