A Film Thickness Monitoring System Based on Bolt Self-positioning

A monitoring system and self-positioning technology, which is applied in the field of film manufacturing, can solve problems such as instabilities, inaccurate manual judgments, and impact on the quality of film thickness control effects, so as to achieve short automatic positioning process, prevent human error in judgment, and reduce the amount of adjustment actions Effect

CN107144249BActive Publication Date: 2019-07-30ZHEJIANG KINLEAD PACKAGING MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-07-30

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Abstract

The invention discloses a bolt-based self-positioning film thickness monitoring system, comprising an acquiring unit, a calculating unit, an identifying unit, an adjusting unit and a data outputting unit. The calculating unit is based on the thickness curve data acquired by the acquiring unit to calculate the thickness values of the various points on the curve as well as the positions of the various bolts; the identifying unit searches and identifies the to-be-processed bolts; the adjusting unit adjusts the temperatures of the to-be-processed bolts and then compares the movement of the film thickness zero-deviation point before and after the adjustment, and based on the movement amounts, adjusts the estimated positions for the various bolts. In the system of the invention, through the selection of a group of bolts for thickness adjustment and feedback identification, the thickness of the film can be monitored effectively in real time. And the accurate bolt self-positioning can provide basis for film thickness control and the self-positioning process requires a small action amount.
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Description

technical field

[0001] The invention relates to the technical field of film manufacturing, in particular to a film thickness monitoring system based on bolt self-positioning. Background technique

[0002] BOPP film, that is, biaxially oriented polypropylene film, is made by biaxially stretching. It is a plastic product that is specially formed and processed by physical, chemical and mechanical means. BOPP production line is a complex system with nonlinear, time-varying and large delay. Its technological process mainly includes: raw material melting, extrusion, cooling forming, longitudinal stretching, transverse stretching, trimming, corona treatment, coiling, etc.

[0003] The physical and mechanical properties such as tensile strength, elongation at break, turbidity, gloss, etc., which are the quality indicators of BOPP film products, are mainly determined by the properties of the material itself, so they are easy to meet the requirements. As the main control indicators ...

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Embodiment Construction

[0031] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The present invention covers any alternatives, modifications, equivalent methods and schemes made within the spirit and scope of the present invention.

[0032] In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details.

[0033] In the following paragraphs the invention is described more specifically by way of example with reference to the accompanying drawings. It should be noted that all the drawings are in simplified form and use inaccurate scales, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of t...