Partitioned paving molding die and method for multi-bundle and multi-positioning girder belts

Abstract

The invention belongs to a composite molding technology, and particularly relates to a paving molding die and a method for composite parts composed of multi-bundle and multi-positioning girder belts. The die is designed and manufactured in a partitioned mode, a lower die is divided into a main die body and a movable block by taking a symmetric position of girder belts at the front and rear edges of a flexible beam as a die parting surface, and the movable block can move for 0-40 mm away from the main die body so as to dorm a paving space; and a sliding chute is arranged at the joint of the bottom of the movable block and the main die body, so that the relative motion between the movable block and the main die body is performed along a fixed trajectory. The main die body and the movable block are respectively provided with a positioning pin for two bushes at the inner and outer ends, and the positioning pins are used as benchmarks for the winding and positioning of the girder belts. According to the invention, the winding and paving of multi-bundle and multi-positioning girder belts are completed in a partitioned die body form, thereby solving the problem that an operating space between two bundles of girder belts is insufficient, and avoiding the defects of raveling and corrugation of girder belts, and the like caused by the insufficiency of operating spaces.

Description

technical field [0001] The invention belongs to the composite material forming technology, in particular to a method for laying and pasting composite material parts composed of multi-bundle and multi-position girder strips and pressurizing. Background technique [0002] Such as figure 1 , figure 2 , the bearingless rotor composite material flexible beam contains 4 bundles of glass fiber beam belts, and each beam beam belt is wound around two positioning bushings at both ends, and has a complex structure shape. The relative position accuracy of the four bushings is very high. The winding and laying of the girder belt is the key link in the forming process. In order to ensure the accurate positioning of the four bushings, the commonly used girder belt laying and forming tooling is an integral form, that is, the four positioning bushings are fixed on the same tooling template , so that each bundle of girder belts is wound and paved around the bushings at both ends. Because ...

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Problems solved by technology

The winding and laying of the girder belt is the key link in the forming process. In order to ensure the accurate positioning of the four bushings, the commonly used girder belt laying and forming tooling is an integral form, that is, the four positioning bushings are fixed on the same tooling template , so that each bundle of girder belts is wound and paved around the bushings at both ends. Because the distance between the two beams at the front and rear edges of the structure is narrow (about 3.5mm at the narrowest position), the operating space for the winding process is insufficient, and it is easy to be damaged during the winding process of the girders. Wrinkles, broken yarns and random yarns will affect the load-bearing effect of the final flexible beam girder belt

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