A high-efficiency automatic continuous production method for prepreg composite coils

Abstract

The invention relates to an efficient automatic continuous production method of a prepreg compound coil. The method comprises the following steps: continuously unreeling unidirectional prepreg of a longitudinal layer at 0DEG, and uniformly spraying a cloth fiber layer with an adhesive by using an adhesive spraying device; unreeling a transverse unidirectional prepreg in a direction perpendicular to the longitudinal direction to make the above two unidirectional prepregs orthogonal at a compound platform; carrying out program control to make the stepping length of the transverse unidirectional prepreg be the width of the longitudinal unidirectional prepreg, and simultaneously carrying out laminated composite flat compaction and transverse laser cutting after material sending; and pulling the orthogonal prepregs to a reeling portion through a longitudinal clamping system, and carrying out tidy trimming processing of the two-side selvedges in front of the reeling portion to obtain a prepreg compound coil product having tidy selvedges. The roll size of the prepreg compound coil produced in the invention can be arranged according to practical requirements of clients in order to provide conveniences for the subsequent post-processing and use of the clients.

Description

technical field [0001] The invention relates to a composite coil, in particular to a high-efficiency automatic and continuous production method for a prepreg composite coil, which belongs to the field of polymer composite material preparation. Background technique [0002] With the development of science and technology, the scope of application of composite materials has gradually expanded, and gradually developed from military use to civilian use, from aerospace to daily sporting goods, etc., all of which require the composite materials used to have certain mechanical properties (such as tensile properties , shear resistance, compression resistance and impact resistance, etc.) and physical properties (such as apparent quality, low density, low weight under the same performance, etc.). Structural profiles such as prepregs are mainly used in personal protection and cutting-edge technology. Since such products involve the safety of personal life or national defense, the stabil...

AI Technical Summary

Problems solved by technology

[0003] The prepreg coils on the existing market are generally produced semi-mechanized, with a large proportion of manual operations. It is difficult to realize automatic continuous production, and it is difficult to guarantee the stability and consistency of materials. The overall quality of materials is average and individual differences are large, resulting in The stability of the product is not high

There are certain hidden dangers in the application of this unstable product in the personal protection industry that has high requirements for product performance stability. Therefore, it is necessary to change the process method in the existing market to improve the stability and consistency of product performance.

[0004] In the manufacturing method of orthogonal composite disclosed in US Patent US5173138, one of the key technologies is that the mechanical cutter cuts the prepreg to ensure half-cutting, and only cuts the laminated fiber layer without cutting the carrier film. Difficult to guarantee during actual operation and implementation

[0005] Chinese patent CN102234934 proposes the use of a manipulator to make the fibers of the two layers laminated at 0 / 90° orthogonally composited, but since the prepreg is a soft composite material, and the single-layer UD has no strength in the transverse direction, the unidirectional The cloth is easy to wrinkle and cause the cloth surface to be uneven, and the use of a robot makes the program and other aspects more complicated, and it is difficult to implement it.

[0006] Chinese patent CN85104384 discloses a laying machine and a method of orthogonal compounding. Since it is applied to plastic non-woven fabrics, and the mechanism for pinching the transverse material is a movable clip, this method cannot be realized in the continuous production of prepregs. Since the prepreg material has no strength in the transverse direction, only clamping the two sides will easily lead to splitting of the prepreg layer on the entire width, and automatic continuity cannot be realized

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