Tension control system of plastic packaging film production line

Abstract

A tension control system in plastic packaging film production line consists of three tension sections connected in series. One tension section is between upper traction and lower traction; another tension section is between the lower traction and friction coil; and the last tension section is between the friction coil and center coil. An upper traction motor, a lower traction motor and a friction coiling motor respectively have a specified value of a datum value, the lower traction motor, the friction coiling motor and a center coiling motor respectively have a specified value of given tension. Each tension section specified value and feedback value are both transmitted to a controller for PID operation. The controller transmits control signals to implement the control over the three tension sections with different tension requirements. By implementing the control over separate sections according to different tension requirements, the invention leads to the overall speed linkage of the whole machine as well as stable operation, has no phenomena such as membrane breaking, excessive stretch caused by oversize tension, as well as membrane stacking, loose winding and the like caused by undersize tension, further improves the quality and precision of product and reaches the production line with advanced international standard.

Description

1. Technical field: [0001] The invention relates to plastic extrusion film blowing machine equipment, in particular to a tension control system for film blowing machine packaging films. 2. Background technology: [0002] Domestic plastic extrusion blown film machine equipment is more common for packaging film processing, but the accuracy and reliability of the tension control system during processing directly affect the quality of the film and the final coiling effect (film breakage, excessive stretching caused by excessive tension) Stretching and other problems, too small tension will cause problems such as film stacking and unwinding). At present, there are many types of tension and coiling control systems in the plastic machine blown film unit industry, and the degree of automation is more or less low, and the linkage speed regulation effect is not good. , Poor coiling effect and other issues. 3. Contents of the invention: [0003] The purpose of the present invention ...

AI Technical Summary

Problems solved by technology

[0002] Domestic plastic extrusion blown film machine equipment is more common for packaging film processing, but the accuracy and reliability of the tension control system during processing directly affect the quality of the film and the final coiling effect (film breakage, excessive stretching caused by excessive tension) Stretching and other problems, too small tension will cause problems such as film stacking and unwinding). At present, there are many types of tension and coiling control systems in the plastic machine blown film unit industry, and the degree of automation is more or less low, and the linkage speed regulation effect is not good. , poor coiling effect and other problems

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