Online detection device for plastic film

Abstract

The invention discloses an online detection device for a plastic film. The online detection device comprises a first horizontal sliding rail and a second horizontal sliding rail. The first horizontalsliding rail and the second horizontal sliding rail are both installed on a machine frame and further located below the two sides of a roller separately. The first horizontal sliding rail and the second horizontal sliding rail are provided with a first positioning sliding block and a second positioning sliding block in a slideable mode correspondingly. The machine frame is provided with a slidingblock driving mechanism. A detection mechanism comprises a signal projector, a signal receiver, a first mounting base and a second mounting base. The first mounting base and the second mounting base are installed on the first positioning sliding block and the second positioning sliding block correspondingly. The signal projector is installed on the first mounting base, and the signal receiver is installed on the second mounting base. The signal projector and the signal receiver are relatively arranged. A controller is installed on the machine frame and is further connected with a drive motor,the sliding block driving mechanism, the signal projector and the signal receiver. According to the online detection device for the plastic film, the ex-factory quality can be guaranteed by detectingthe thin film thickness and cracks.

Description

technical field [0001] The invention relates to the technical field of plastic film production, in particular to an online detection device for plastic films. Background technique [0002] Biaxial stretching is a relatively advanced plastic film production process. The plastic film obtained by biaxial stretching has smaller thickness and better performance. In particular, with the development of the economy, more and more fields require optical-grade plastic films or ultra-thin plastic films with high strength and high insulation properties, and these plastic films can generally only be produced by biaxial stretching. [0003] To produce plastic film by biaxial stretching process, usually the thicker plastic film is preheated first, then stretched in both longitudinal and transverse directions, and then shaped to obtain a thinner plastic film. In the longitudinal stretching, the plastic film is stretched longitudinally by a roller with a certain speed ratio; in the transver...

AI Technical Summary

Problems solved by technology

[0004] In actual production, affected by factors such as process, temperature, and equipment, the thickness of the produced plastic film often does not match the actual required thickness.

If the thickness of the plastic film is smaller than the actual required thickness, the strength of the plastic film cannot meet the requirements

If the thickness of the plastic film is larger than the actual required thickness, the raw material will be wasted and the production cost will be increased

Moreover, in the stretching process, it is easy to crack due to excessive stretching, resulting in waste products, reducing the qualified production rate of plastic thinning, and a large number of rework of unqualified products, wasting labor.

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