Device for controlling thicknesses of fiber reinforced composite material plate-like parts

Abstract

The invention provides a device for controlling thicknesses of fiber reinforced composite material plate-like parts. According to the device, a plurality of vertical connection holes are correspondingly formed in circumferential edges of both an upper die and a lower die; the upper die and the lower die are mutually connected by utilizing the vertical connection holes and vertical connectors; a plurality of spacing devices are uniformly distributed on the circumferential edges, perpendicular to a board direction, of the upper die and / or the lower die; the spacing devices are used for setting adistance between the upper die and the lower die so as to ensure that the distance is consistent with the thickness of a to-be-prepared fiber reinforced composite material plate-like part. The upperdie and the lower die are mutually connected through corresponding horizontal connectors and a side surface connection device. The device for controlling thicknesses of fiber reinforced composite material plate-like parts has the advantages of being simple to operate, relatively low in cost, relatively good in reusability and relatively good in wetting effect.

Description

technical field [0001] The invention relates to the technical field of fiber-reinforced composite materials, in particular to a device for controlling the thickness of a vacuum-formed fiber-reinforced composite material plate. Background technique [0002] In the process of testing the mechanical properties of fiber reinforced composite materials, the fiber volume fraction directly affects the accuracy of testing data and the evaluation of testing results. At present, the vacuum infusion method is used to prepare laminates in the field of fiber-reinforced composite materials. The traditional method is to place the fiber material to be tested between two layers of plastic films or two pieces of glass or two metal templates, and then place metal or other materials of corresponding thickness. The material gasket controls the thickness of the fiber-reinforced composite material, and then controls the fiber volume fraction. Finally, the release cloth and the guide net are arrange...

AI Technical Summary

Problems solved by technology

The main disadvantages of fiber-reinforced composite laminates produced by traditional methods are: (1) The operation of the vacuum infusion process is more complicated, more auxiliary materials are used, and the cost is higher; (2) The thickness of the fiber-reinforced composite material is controlled by the gasket, which has a great impact on the accuracy and hardness of the gasket. , high flatness requirements, resulting in higher production costs of gaskets; (3) even gaskets with high hardness are easily damaged during use, resulting in large thickness deviations and poor reusability; (4) using one end or more Spot vacuum perfusion is easy to cause infiltration effect is difficult to control

⑸ It is difficult to control the thickness of the sample by negative pressure

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