Double-layer two-way laying method of automatic prepreg tape laying device

Abstract

The invention discloses a double-layer two-way laying method of an automatic prepreg tape laying device. The automatic prepreg tape laying device comprises a feeding mechanism, laying mechanisms, a cutting mechanism, a guiding mechanism and a reversing mechanism, and the double-layer two-way laying method comprises the steps that a first laying mechanism presses and lays a first layer, a second laying mechanism at a certain distance behind the first laying mechanism presses and lays a second layer, two layers of prepreg tapes can be laid at the same time, the reversing mechanism is used for reversing, a first prepreg tape and a second prepreg tape are respectively guided to be conveyed to a first pressing roller and a second pressing roller in the direction opposite to the previous laying process, the next laying process is carried out, and two-way laying can be realized. According to the double-layer two-way laying method, single laying layer by layer is not needed, the production efficiency is greatly improved, meanwhile, idle stroke return stroke or turning around is not needed, and the laying time is saved.

Description

technical field [0001] The invention relates to the field of automatic laying, in particular to a method for automatic laying of prepreg tapes. Background technique [0002] The automatic laying technology has the characteristics of high efficiency, high quality, high reliability and low cost. It is especially suitable for the manufacture of large-scale components, which reduces the number of assembled parts, saves manufacturing and assembly costs, and greatly reduces the scrap rate of materials. It is widely used in the manufacture of aerospace high-performance composite structures. [0003] The automatic laying technology uses the prepreg tape as the raw material. After being heated, it is directly laid on the surface of the mold or the upper layer of prepreg tape under the action of the pressure roller to realize the automatic forming of the composite material layup. [0004] The disadvantages of the prior art are as follows. [0005] 1. The automatic laying technology ...

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Problems solved by technology

[0005] 1. The automatic laying technology of the prior art is to lay the prepreg tape layer by layer on the surface of the mold. After laying several layers, the composite material component reaches a certain thickness. Therefore, for laying multi-layer prepreg tape The mold can only be stacked layer by layer, and the laying efficiency is low

[0006] 2. At the end of laying each path, the laying mechanism must go back and forth or turn around to re-lay the previous laying path or lay the next path. Therefore, during the automatic laying process, the laying mechanism needs to Multiple round trips or U-turn laying, wasting a lot of time

[0007] 3. The existing cutting method is the contact cutting of the cutting board and the anvil knife. Since the strip material is moving during the laying process, the contact cutting is easy to cause adhesion and pulling of the anvil knife and the surface of the strip material, which will cause unnecessary damage to the strip material. The tension will affect the laying effect of the tape at the moment of cutting

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