Automatic deviation correcting device used for flexible film conveying

Abstract

The invention relates to an automatic deviation correcting device used for flexible film conveying, which comprises a bottom plate, two opposite supports are arranged on the bottom plate, a film guide part and a deviation guide rod are connected between the two supports, two ends of the deviation guide rod penetrate through two deviation correcting plates respectively, the two deviation correcting plates are connected with two guide flanges and two driving components respectively, the guide flanges are arranged on the guide rod, and the deviation correcting plates are driven to move along the guide rod linearly under the drive of the driving component. The automatic deviation correcting device used for flexible film conveying can be widely applicable to rolling flexible films into a precisely roll conveying system, realizes automatic deviation correcting for the films and has the advantages of simple structure, small size, low cost, convenience in use, fine deviation correcting effect and the like.

Description

technical field [0001] The invention relates to the field of film roll-to-roll conveying, in particular to an automatic deviation correction device for film conveying. Background technique [0002] Film delivery systems are widely used in the paper, printing, textile and flexible electronics manufacturing industries. In actual winding and conveying conditions, the problem of deviation of the conveyed flexible film often occurs, that is, the single side or centerline of the detected film deviates from the preset conveying path. Film deviation is inevitable in the production process. In ordinary transmission equipment, when the deviation between the centerline of the film and the conveying path exceeds 5% of the width of the conveying film, it needs to be corrected. In precision equipment, the requirements are higher. Correction is required when the offset exceeds the range of ±0.1mm. In order to meet the positioning accuracy requirements of the precision winding system for ...

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Problems solved by technology

[0003] At present, the common deviation correction system products that can be used for flexible films in the market, such as the PW series of Mitsubishi Corporation of Japan, the American Maxes International FIFA series, the DR series of the German E+L company, etc., as well as the Chinese invention patent CN1990367A involving film deviation correction devices , CN101244777A, etc., the main principle of its correction device is to achieve the purpose of correction by swinging or translationally moving a roller shaft and sliding the film by friction between the roller and the film. Its characteristics mainly include: (1) in the film feeding process, The deflection correction of the film is carried out by controlling the displacement and angle of the guide roller; (2) The deviation detection device is mainly a non-contact sensor such as photoelectric or ultrasonic; (3) There are two common types of single-roller deflection correction and double-roller deflection correction. ; Overall, the structure of the correction device involved is relatively complex, the volume is large, and because the edge detection of the film is performed by an expensive ultrasonic sensor or a CCD sensor, its cost is relatively high

In addition, due to the poor openness of the deviation correction devices on the market, it is difficult to embed into a unified control system composed of other equipment modules in the winding production line

[0004] In actual working conditions, another common deviation correction method is a mechanical stop ring or a deviation correction block. Its main advantages are simple structure and extremely low cost; but the accuracy is low, and it cannot be automatically corrected. High film deflection, and due to the short contact length with the film edge, it is easy to cause wrinkling and deformation of the flexible film

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