System and method for controlling traction of intermittent packaging machine for making bag by plastic film

Abstract

The invention relates to a system and a method for controlling traction of an intermittent packaging machine for making bags by plastic film. The system comprises a rotary encoder, a color scale sensor, a paper letting-off sensor, a paper letting-off driver, a vertical-seal drawing roller start sensor, a vertical-seal drawing roller driver, a computer and a system controller; the parameters of the set dimensions of a packing material are input by the corresponding function light touch keys of the system controller during working hours and are stored into a memory of the system; a main motor of a packing machine runs; a computer of the system receives tested information; a vertical-seal drawing roller executes operations such as bag drawing, paper feeding, bag length error compensating, and the like; a feeding device executes the material filling operation; a paper letting-off device executes the paper letting-off operation; and the processes are repeated again and again, so as to finish the overall process of bag making, filling and encapsulating. The system adopts a common alternating current machine for realizing the traction to the packing material with fixed length or the cursor tracking and positioning control, thereby having simple structure, less system configuration parts, convenient and fast equipment assembly, debug and maintenance and low matched production cost.

Description

technical field [0001] The invention belongs to the field of packaging machinery control, and relates to a plastic film bag-making traction control system and a control method of an intermittent packaging machine, which are used for the traction control of the packaging material bag-making process of the plastic film bag-making process of the intermittent packaging machine. Background technique [0002] Packaging machinery is a new type of industry that is rapidly developing in China. It is currently used in food, pharmaceutical, chemical, daily chemical and other industries. There are two control methods for the traction of packaging materials for plastic film bags in intermittent automatic packaging machines: one is the purely mechanical crank Rocker electromagnetic clutch intermittent control, this kind of purely mechanical crank rocker electromagnetic clutch intermittent control is troublesome to adjust, noisy, easy to wear electromagnetic clutch friction plate, low contr...

AI Technical Summary

Problems solved by technology

[0002] Packaging machinery is a new type of industry that is rapidly developing in China. It is currently used in food, pharmaceutical, chemical, daily chemical and other industries. There are two control methods for the traction of packaging materials for plastic film bags in intermittent automatic packaging machines: one is the purely mechanical crank Rocker electromagnetic clutch intermittent control, this kind of purely mechanical crank rocker electromagnetic clutch intermittent control adjustment is troublesome, noisy, electromagnetic clutch friction plate is easy to wear, low control accuracy and high maintenance cost

Second, servo motor intermittent control and stepping motor intermittent control. Although servo motor and stepping motor intermittent control have high control accuracy, the manufacturing cost of the system is high, and maintenance requires professionals

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