Equipment for cutting polyimide fiber and cutting method

Abstract

The invention discloses equipment for cutting a polyimide fiber. The equipment comprises a rack, wherein a tiling mechanism, a sizing mechanism, a setting mechanism, a feeding mechanism, a clamping mechanism, a shearing mechanism and a silk storage mechanism which are used for treating the polyimide fiber are sequentially arranged on the rack; the shearing mechanism comprises a limiting block usedfor positioning the polyimide fiber and a shearing device used for cutting the polyimide fiber; the limiting block is fixedly arranged on the rack; a shearing gap matched with the polyimide fiber isreserved between the limiting block and the clamping mechanism; and the shearing device is arranged at the shearing gap. The device is reasonable in design and good in shearing effect, a polyimide fiber segment with the specified length can be effectively cut through tiling, sizing, setting, feeding, clamping and shearing of the polyimide fiber, and the application requirements of the market in the special field can be well met.

Description

technical field [0001] The present invention relates to the technical field of fiber production, in particular to a device for cutting polyimide fibers, and in particular to the cutting method of the above-mentioned device for cutting polyimide fibers. Background technique [0002] At present, the commonly used fiber cutting devices mainly include rotary disc type, guillotine type, hob type and other cutting methods. The rotary disc type cutting device is divided into two types: outer rotary disc type and inner rotary disc type; For the following specifications, either the cutting efficiency is low, the processing time is long, and the cost is high; or the double filament cannot be effectively cut, and it cannot meet the needs of high-end applications. [0003] Existing fiber cutting devices are suitable for cutting fibers with relatively brittle fibers, strong rigidity or relatively large denier, such as glass fibers and carbon fibers. For polyimide fibers, the fiber cuttin...

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Problems solved by technology

[0002] At present, the commonly used fiber cutting devices mainly include rotary disc type, guillotine type, hob type and other cutting methods. The rotary disc type cutting device is divided into two types: outer rotary disc type and inner rotary disc type; For the following specifications, either the cutting efficiency is low, the processing time is long, and the cost is high; or the double filament cannot be effectively cut, which cannot meet the needs of high-end applications.

[0003] Existing fiber cutting devices are suitable for cutting fibers with relatively brittle fibers, relatively strong rigidity, or relatively large deniers, such as glass fibers and carbon fibers. For polyimide fibers, the fiber cutting machines currently on the market are basically unable to Successfully cut below 3mm, which cannot meet the application requirements of the market in special fields

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