Puncture needle mechanism for manufacturing composite carbon fiber prefabricated part

Abstract

The invention discloses a puncture needle mechanism for manufacturing a composite carbon fiber prefabricated part. The puncture needle mechanism comprises a hollow barrel, a thimble which is arranged inside the barrel and connected with the barrel through an elastic component, and a first gasket. A conical part is arranged at one end of the barrel, a through hole is formed in the other end of the barrel, and the first gasket abuts against the edge of the barrel. The thimble can make longitudinal motion in the barrel and movably stretch out of the conical part, and the thimble is connected with the elastic component through a second gasket. A spine part is arranged at the other end of the thimble, and a plurality of barb parts are arranged between the spine part and the second gasket. According to the puncture needle mechanism for manufacturing the composite carbon fiber prefabricated part, due to the arrangement of the barrel with the conical part, carbon fiber layers can be punctured, and fiber gaps can be widened; then through the arrangement of the thimble with the spine part, the carbon fiber layers are ejected into the back face of a carbon fiber mesh tire through a puncture needle, hence, the puncture effect is improved, and the manufacturing efficiency of the composite carbon fiber prefabricated part is improved as well.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a needle mechanism for manufacturing carbon fiber composite preforms. Background technique [0002] Composite fiber prefabricated body is usually formed by alternate lamination of carbon fiber layers and carbon fiber mesh tires. Because of its high temperature resistance, friction resistance and light texture, it is widely used in aerospace, energy, transportation and rail fields; now Some composite fiber preforms usually include two layers of carbon fiber layers and a layer of carbon fiber mesh tires, and the carbon fiber mesh tires are located between the carbon fiber layers. When making a composite fiber prefabricated body, it is necessary to push the carbon fiber layer into the back of the carbon fiber mesh tire through a needle, and weave it with another layer of carbon fiber layer in a special weaving machine to form a composite fiber prefabricated body. [000...

AI Technical Summary

Problems solved by technology

[0003] However, the current needles are only provided with a plurality of barbs on the edge of the elongated columnar body, and the carbon fiber mesh is pierced by the needles to weave the first layer of carbon fiber filaments and the second layer of carbon fiber filaments

Therefore, in the prior art, the puncture needles used to manufacture carbon fiber composite preforms often fail to pierce the carbon fiber mesh tire or cannot effectively pass the carbon fiber filament through the carbon fiber mesh tire during the puncture process.

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