Film unreeling control system

Abstract

The invention discloses a film unreeling control system. The control system comprises a rack and further comprises a film storing mechanism and a film unreeling mechanism which are fixedly arranged on the rack and sequentially connected, and a film is conveyed to a film clamping bar sequentially through the film storing mechanism and the film unreeling mechanism; the film unreeling mechanism comprises a film conveying unit, a tension monitoring unit used for monitoring the film tension of the film conveying unit and a driving unit for driving the film conveying unit to unreel the film; a distance detection sensor in the tension monitoring unit directly controls a film unreeling frequency changer, and a detected distance signal is converted into an output frequency signal of the film unreeling frequency changer; and according to distance parameters reflecting film tension, the rotating speed of a frequency changing motor is controlled, and therefore the film unreeling rate is controlled. The film unreeling control system is simple in structure, high in automation degree and capable of effectively controlling stable film unreeling, so that certain tension of the film can be kept all the time, and the film cannot be tensioned or loosened.

Description

Technical field [0001] The invention belongs to the technical field of packaging machinery, and specifically relates to a film release control system. Background technique [0002] Usually in the production line or assembly line of large cans and circular products, such as copper coils, large barrels of milk powder, large barrels of chemicals, etc., the surface needs to be covered with a layer of film to isolate it from the surrounding environment, prevent oxidation, prevent dust, and ensure items Clean, tidy and free from contamination. In the prior art, the film unloading device mainly rotates the article at a self-determined speed, and the film unloading system does not move, which is suitable for a light-weight article packaging system. And the tension control is not up to the standard, the film motor speed is slow, the film may be broken; if the film motor speed is fast, the film may also be loose and cannot cover the product. [0003] Therefore, those skilled in the art urg...

AI Technical Summary

Problems solved by technology

And the tension control is not up to the standard, the film release motor speed is slow, the film may be pulled off; if the film release motor speed is fast, the film may be loose and cannot cover the product

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