A control method suitable for multilayer film compounding

Abstract

The invention discloses a control method suitable for combination of a plurality of layers of films. The control method comprises the following steps of inputting a tension reference instruction of a feeding roll and a displacement reference instruction of a composite roll and obtaining feedback signals including the current positions, the position deviations and the tension states of the feeding roll and the composite roll; comparing the displacement reference instruction of the composite roll with the current position value of the composite roll so as to take the result as an actual displacement instruction and realize displacement closed-loop control; based on the actual displacement instruction of the composite roll, calculating to obtain a displacement reference instruction of the feeding roll before correction; correcting the displacement reference instruction before correction by multiple modes so as to obtain a corresponding actual displacement instruction and realize displacement closed control; and respectively rotating the roll pair according to the actual displacement instruction so as to realize synchronous movement control process of combination of the plurality of layers of films. By the control method, the positioning effect of the combination of the plurality of layers of films can be obviously improved; simultaneously, the control method disclosed by the invention has the characteristics of high feeding accuracy, stable tension control, high automation degree and convenience in operation and the like.

Description

technical field [0001] The invention belongs to the technical field of film conveying and processing, and more specifically relates to a control method suitable for multilayer film compounding. Background technique [0002] Thin film lamination technology is widely used in industrial production, such as packaging materials, adhesive products, printing industry and flexible electronics manufacturing, all of which require the use of film lamination production systems. Due to the special physical properties of the film material, it is easy to deform or even break when the tension is too high, and it is easy to fold and wrinkle when the tension is too small. In order to obtain a good film feeding effect, stable tension control and accurate conveying of the film are particularly important . [0003] In the film conveying system of the prior art, the film conveying generally adopts the method of driving the rollers or the clamping device by the motor. Due to the influence of fact...

AI Technical Summary

Problems solved by technology

However, for the existing film alignment compounding method, the effect of compounding is basically only guaranteed by the compounding roller itself, and there are corresponding shortcomings such as low alignment accuracy, more manual intervention, and low efficiency.

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