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A film thickness measurement auxiliary positioning method

A technology for assisting positioning and film thickness, applied in the field of thin film manufacturing, can solve problems such as instability, inaccurate manual judgment, and impact on the quality of film thickness control effects, reducing the amount of engraving and preventing human judgment errors.

Inactive Publication Date: 2019-12-20
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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  • A film thickness measurement auxiliary positioning method
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  • A film thickness measurement auxiliary positioning method

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Embodiment Construction

[0029] The 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 solutions made within the spirit and scope of the present invention.

[0030] In order for the public to have a thorough understanding of the present invention, specific details are described in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details.

[0031] In the following paragraphs, the present invention is described in more detail by way of example with reference to the drawings. It should be noted that the drawings all adopt a relatively simplified form and all use imprecise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the emb...

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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 or biaxially oriented polypropylene film is made by biaxial stretching. It is a plastic product that is specially formed by physical, chemical and mechanical means. The BOPP production line is a complex system with nonlinear, time-varying and large delay. The process flow mainly includes: raw material melting, extrusion, cooling forming, longitudinal stretching, transverse stretching, trimming, corona treatment, coiling, etc. [0003] The physical and mechanical properties of BOPP film products, such as tensile strength, elongation at break, turbidity, gloss, etc., are mainly determined by the properties of the material itself, so they can easily meet the requirements. As the main control index of reworkability and usability, that is, film thickness deviation and fil...

Claims

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Application Information

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