Packaging film shearing control system and method

Abstract

The invention discloses a packaging film shearing control system. The packaging film shearing control system comprises a film drawing shaft, a cutter shaft, a control device and a color mark sensor which is arranged on a packaging film operating path and is positioned at the upstream of the film drawing shaft, wherein the control device comprises a compensating calculating unit and a virtual axis; the virtual axis forms a cam engagement relationship with the film drawing shaft and the cutter shaft; the color mark sensor is used for sending a detecting signal every time a color mark is detected on a packaging film; and the compensating calculating unit is used for calculating regulating amount according to the virtual axis position corresponding to the detecting signal, and the regulating amount is used for regulating operation of the film drawing shaft. Besides, the invention further discloses a packaging film shearing control method. The packaging film shearing control system can be used for realizing precise control on position of the color marker, and effectively improves tracking accuracy of the color marker.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a packaging film cutting control system and method. Background technique [0002] In the food packaging (vertical packaging or pillow packaging) equipment control system, the color mark on the packaging film moves forward continuously with the traction of the film pulling shaft, and the cutter mechanism follows the packaging film to cut off. The action of a cycle needs to be aligned with the color mark. [0003] Existing packaging equipment generally uses a special control system, which detects the arrival of the color mark signal through the sensor, calculates the time difference between the two color marks, and compares it with the time value between the two color marks at the theoretical speed. Adjust the speed of the film pulling axis to achieve the alignment of the cutter and the color mark. [0004] However, the above-mentioned control system detects and records time th...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned control system has a certain error through the color mark detection and recording time, which affects the alignment accuracy of the cutter and the color mark; through the speed compensation of the film pulling axis, there is error accumulation, which cannot achieve precise position control

On the other hand, with the improvement of equipment technology and speed, the use of dedicated controllers does not have user-programmable functions, while the current general-purpose pulse output PLC (Programmable Logic Controller, Programmable Logic Controller) can realize position and speed Control, but position and speed compensation cannot be performed in real time during operation

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