Guide roller anti-winding device for polyimide tows and anti-winding method

Abstract

The invention relates to a guide roller anti-winding device for polyimide tows. The guide roller anti-winding device comprises a winding alarm device and an air knife for blowing the polyimide tows. The air knife is arranged on the portion, on the wire outlet side of a guide roller, of a production line frame. The air knife is externally connected with a high-pressure air source through an air inlet pipe. An air outlet of the air knife faces a position, in contact with the polyimide tows, of the guide roller. The winding alarm device is arranged on the portion, on the wire feeding side of theguide roller, of the frame. The winding alarm device comprises a photoelectric switch and a rotating baffle matched with the photoelectric switch. The rotating baffle is close to the guide roller, anda winding gap is reserved between the plate edge of the rotating baffle and the guide roller. The device is simple, practical, safe and reliable, the winding phenomenon of the polyimide tows on the guide roller can be greatly reduced until the winding phenomenon is completely solved, the product quality is improved, and the stop rate of the production line is reduced.

Description

technical field [0001] The invention relates to the field of textile machinery, in particular to a guide roller anti-wrapping device for polyimide tow, and a method for using the guide roller anti-wrapping device to perform anti-wrapping. Background technique [0002] At present, during the post-processing of polyimide, the tow will be entangled when guided by the guide roller due to static electricity, broken filaments and other reasons. Severe entanglement will affect product quality and increase the shutdown rate of the production line. In the prior art, in order to avoid the polyimide tow from being entangled, a felt device is installed on the guide roller, but through actual production verification, the felt device is not thorough enough to prevent the entanglement, the degree of anti-winding is not enough, and the time is long. Thread entanglement occurs, and the felt builds up over time, making it difficult to clean. Contents of the invention [0003] The technical...

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Problems solved by technology

[0002] At present, during the post-processing of polyimide, the tow will be entangled when guided by the guide roller due to static electricity, broken filaments and other reasons. Severe entanglement will affect product quality and increase the production line shutdown rate

In the prior art, in order to avoid the polyimide tow from being entangled, a felt device is installed on the guide roller, but through actual production verification, the felt device is not thorough enough to prevent the entanglement, the degree of anti-winding is not enough, and the time is long. There will be silk entanglement, and the felt will accumulate due to long-term use, which is very difficult to clean

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