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Film thickness measurement auxiliary positioning method

A technology for assisting positioning and film thickness, applied in the field of film manufacturing, can solve the problems of inaccurate manual judgment, inability to stabilize, and influence on the quality of film thickness control effect, so as to prevent human judgment errors and reduce the amount of engraving.

Inactive Publication Date: 2017-10-27
ZHEJIANG VOCATIONAL COLLEGE OF COMMERCE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods require manual auxiliary identification, measurement and judgment according to the actual production situation. Manual judgment is not only inaccurate, but also unstable.
Due to the lack of continuous and accurate positioning of the film profile, the thickness control effect of the film and the quality of the produced products are often affected

Method used

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Embodiment Construction

[0029] 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.

[0030] 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.

[0031] 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...

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Abstract

The invention discloses a film thickness measurement auxiliary positioning method. The film thickness measurement auxiliary positioning method comprises the following steps: engraving and printing a slope-shaped mark on a casting piece which is cooled and moulded after being extruded by an extruding machine by using an engraving and printing unit in an executing mechanism; after an acquisition module acquires thin film profile thickness curve data from a thickness measurement instrument, processing the thin film profile thickness curve data by an analyzing and processing module, and realizing start synchronization with scanning of the thickness measurement instrument; later, transmitting command information to an intensity adjusting module and a focus adjusting module through the analyzing and processing module and to a driving module through a synchronizing module periodically, controlling the executing mechanism to act to perform auxiliary positioning engraving and printing, and engraving and printing a V-shaped or U-shaped gap mark at a preset position of the casting piece; positioning mould head bolts accurately by capturing extreme points of a thin film profile mark gap. The film thickness measurement auxiliary positioning method can realize the synchronization with the thickness measurement instrument quickly; moreover, the requirements on an engraving and printing amount can be reduced through the synchronization; the mark acquired after auxiliary positioning is performed has a number pair set of thin film profile thickness values of all mould head bolt positions; real-time basis is provided for the control of thin film thickness.

Description

technical field [0001] The invention relates to the technical field of thin film manufacturing, in particular to an auxiliary positioning method for film thickness measurement. 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 indicator...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/92B29C47/08B29C48/92
CPCB29C48/0023B29C48/25B29C48/92
Inventor 鲍军民
Owner ZHEJIANG VOCATIONAL COLLEGE OF COMMERCE
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