Automatic belt paving machine blank folding tool convenient to transfer and folding method

Abstract

The invention relates to an automatic belt paving machine blank folding tool convenient to transfer. The folding tool is characterized in that the upper surface of the folding tool is an arc surface, a rubber layer is paved above the upper surface of the folding tool, and an isolating membrane is paved above the rubber layer. A method adopting the folding tool to fold a composite material comprises the steps of (1) carrying out vacuum pumping compaction on the arc surface between the rubber layer and the folding tool; (2) tightly compacting the isolating membrane and the rubber layer; (3) painting a resin solution which has same batch and mark with a prepreg which is adopted in a composite material folding process; (4) enabling the folded composite material to easily transfer to a forming tool by arranging the rubber layer between the isolating membrane and the folding tool. The folding tool and the folding method provided by the invention have the advantages that the tool can effectively solve the problem that a plane tool folding curved surface composites the wrinkle of the composite material, and meanwhile, the method is capable of effectively achieving the purpose that the folded composite material is easily transferred to the forming tool from a folding tool.

Description

technical field [0001] The invention relates to an automatic tape laying machine billet laying tool and laying method which is convenient for transfer, and is suitable for automatic laying and transfer of large curvature composite material parts. Background technique [0002] Automatic tape laying technology is an automatic laying technology integrating blanking, laying and compaction. At present, it is more and more used in the field of composite material manufacturing, especially for the laying of large wall panels and beams with simple structures. stack. The maximum swing angle of the head of the automatic tape laying machine is ±22.5°, so the maximum bending angle of the tooling that can be laid is 45°, which limits the application of the automatic tape laying machine in laying large curvature parts to a certain extent . The radian of the sidewall of a certain type of aircraft is 25°, which exceeds the maximum swing angle of the head of the automatic tape laying machin...

AI Technical Summary

Problems solved by technology

The maximum swing angle of the head of the automatic tape laying machine is ±22.5°, so the maximum bending angle of the tooling that can be laid is 45°, which limits the application of the automatic tape laying machine in laying large curvature parts to a certain extent

The radian of the sidewall of a certain type of aircraft is 25°, which exceeds the maximum swing angle of the head of the automatic tape laying machine. It cannot be directly laid by the automatic tape laying machine. It needs to be laid on the laying tool and then transferred to the forming tool. , Try not to use flat tooling for laying tooling. The two sides of the blank of the workpiece stacked by the flat tooling need to be bent by 25° before being transferred to the forming tooling. Wrinkles are prone to appear on the surface of the blank

During the lay-up process, due to the huge compaction effect of the compaction roller on the workpiece blank, the blank is closely attached to the surface of the lay-up tooling, making it difficult to transfer the workpiece blank from the lay-up tooling to the forming tooling, which brings a lot of trouble to the production. big trouble

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