An online detection-cutting method for metallized film defects

Abstract

The invention relates to a metalized film defect on-line detection-cutting method and belongs to the capacitor detecting method technical field. The method includes the following steps of: step one, laser detection; step two, coating observation; and step three, laser cutting. According to the method provided by the technical schemes of the invention adopted, a laser emitting device and a laser receiving device at two sides of a metalized thin film are adopted to detect the film thickness of the metalized thin film; when the film thickness is normal, the laser receiving device receives stable laser signals at the same position, and when the film thickness is abnormal, the receiving position of the laser receiving device will change, and a corresponding alarm prompt is generated; and therefore, the quality of the thin film of a capacitor can be judged; and the defect of the metalized thin film is displayed in a backlight manner through a light-emitting device, and therefore, the identification probability of the defect can be improved, the accurate positioning of the defect can be achieved, manpower required by detection can be reduced, and the detection efficiency of the defect can be improved. The method has remarkable advantages.

Description

technical field [0001] The invention relates to an online detection-cutting method for metallized film defects, belonging to the technical field of capacitor detection methods. Background technique [0002] At present, capacitors are widely used in the fields of power electronics, communication facilities and rail transportation. With the development of science and technology, capacitors have become indispensable electronic components to promote the upgrading of the above industries due to their good electrical performance and high reliability. Among them Due to its small size and high safety, film capacitors have greatly promoted the development of capacitor technology. In the prior art, the common manufacturing method of film capacitors is to overlap metal film and plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends, and then wind it into a cylindrical metallized film electrode. Then it is placed in the capacitor case, injected w...

AI Technical Summary

Problems solved by technology

It is ideal if these two types of thickness measuring equipment can be used together, but the online thickness measuring equipment detection equipment is relatively complicated, and the non-contact detection is used, which is prone to large data fluctuations caused by poor surface smoothness of the film. Non-on-line thickness measurement equipment can provide contact measurement method, which effectively makes up for the deficiency of online thickness measurement

At present, most of the on-line inspection equipment is carried out by manual visual inspection. This inspection method requires a large investment of manpower, and it is difficult to detect defects with insignificant thickness changes. There are potential safety hazards in the quality of capacitor products.

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