Continuous fiber spreading device and spreading method

Abstract

The invention provides a continuous fiber spreading device and a spreading method. The continuous fiber spreading device and the spreading method aim to solve the problem that fibers are damaged due to the fact that s mechanical roller is mostly adopted for spreading in the prior art. The continuous fiber spreading device comprises a spreading roller set which enables the fibers to be spread and is arranged in a plane, and further comprises a spreading assembly used for conveying the fibers to the spreading roller set, wherein the spreading assembly comprises an air blowing mechanism for blowing air to the fibers and a supporting mechanism for supporting the fibers; and the air blowing mechanism is arranged above the supporting mechanism and used for applying air pressure to the fibers on the supporting mechanism, so that the fibers move in the width direction and are scattered. According to the continuous fiber spreading device and the spreading method, a composite spreading technology is adopted, that is, one spreading assembly blowing the air to the fibers is additionally arranged at the front end of the mechanical roller for spreading, the spreading assembly has the advantage of low damage to the glass fibers, but the arrangement of the glass fibers can be disordered when only air blowing spreading is adopted, and by adopting the composite spreading by the spreading assembly and the spreading roller set, the progress of wide spreading width, less fluff, good stability and good parallel extensibility of fiber bundles after spreading can be achieved.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and in particular relates to a continuous fiber spreading device and a spreading method. Background technique [0002] At present, in the production of continuous fiber-reinforced composite materials, fiber spreading is an essential process. Good fiber spreading directly affects the impregnation effect of the final composite material. Uneven spreading will cause carbon fibers to concentrate in certain parts. It is difficult for the resin to enter the interior of the fiber, forming defects such as white threads and cracks. [0003] The existing Chinese patent application with the application number: CN201910495391.1 and the name: "A Thermoplastic Continuous Fiber Spreading Equipment" discloses a technical solution as follows: the fibers are sequentially passed through the "yarn guide rod", "buckle Gate", "Slip and Spreading Rolls", "Regulating Rolls" and "Traveling Rolls". [0004] ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of fiber damage caused by mechanical roller spreading in the prior art, the present invention provides a continuous fiber spreading device and a spreading method, which solves the problem of yarn spreading by air blowing and mechanical roller spreading. Problems in the prior art

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