Metallized film capacitor film medium fillet cutting device and method

Abstract

The invention relates to the field of film capacitors, in particular to a metallized film capacitor fillet cutting device and method. The device comprises a film filleting mechanism and a film cuttingmechanism, wherein the input end of the film filleting mechanism is connected with the output end of a film forming device, the output end of the film filleting mechanism is connected with the feeding end of the film cutting mechanism, the discharge end of the film cutting mechanism is connected with the input end of a conveying device, the film filleting mechanism is used for filleting a formedfilm mediums, and the film cutting mechanism is used for cutting and separating the plurality of processed continuous film mediums. By arranging the thin film cutting mechanism, the cutting time of the film mediums is shortened, and the working environment is improved; and the filleting step of the film mediums is reduced by arranging the film filleting mechanism, and rapid forming of filleting ofthe film mediums is guaranteed.

Description

technical field [0001] The invention relates to the field of thin film capacitors, in particular to a device and method for cutting rounded corners of a metallized thin film capacitor thin film medium. Background technique [0002] Metallized film capacitors are capacitors made of organic plastic film as the medium, metallized film as the electrode, and wound. Metallized film capacitors are widely used due to their excellent characteristics: non-polarity, high insulation resistance, excellent frequency characteristics (broad frequency response), and low dielectric loss. The films used in metallized film capacitors include polyethylene, polypropylene, polycarbonate, etc., and the film medium has an important impact on the performance of metallized film capacitors. The quality of film dielectric production directly affects the dielectric constant, dielectric strength, self-recovery characteristics and temperature stability of metallized film capacitors. Therefore, for metall...

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Problems solved by technology

[0004] The prior art has the following deficiencies: 1. When cutting the continuous film medium, the upper cutting knife is driven down by the cylinder, and then the upper cutting knife contacts the lower cutting knife to cut off the continuous film medium between the upper and lower cutting knives; The cylinder is driven by gas, and the gas has a certain degree of compressibility; when the cylinder drives the upper cutting knife to move down and contact the upper surface of the lower cutting knife, the upper cutting knife receives a large reverse support force from the lower cutting knife; the reverse support force When it is transmitted to the drive cylinder, the gas in the cylinder is further compressed to drive the cylinder rod to move up and rebound; when the reverse support force is attenuated enough to further compress the gas in the cylinder, the cylinder rod moves upward and stops, and the upper cutting knife can fall stably ;In order to prevent the unstable upper cutting knife from cutting off other parts of the film medium in the process of moving up and rebounding, the continuous film medium needs to wait for the upper cutting knife to stabilize before continuing to move forward, thereby increasing the cutting of the film medium. At the same time, when the cylinder is used to drive, the gas-driven cylinder will generate a lot of noise when it moves up and down, which is not conducive to the improvement of the working environment

2. When filleting the adjacent film media, use the fillet mold to form one fillet at a time, and complete the filleting of the adjacent film medium in two times; and complete the filleting of the adjacent film medium in two times During the processing, the fillet mold needs to be punched and formed twice, resulting in more fillet steps, which is not conducive to the rapid prototyping of film medium fillets

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