A mold structure specially used for processing integral FRP flanges

Abstract

The invention discloses a mold structure specially used for processing integral FRP flanges, including FRP flanges, guide posts, mold bases, mandrels, pressing blocks, and positioning sleeves. The FRP flanges are arranged between the pressing blocks and the positioning sleeves. In the cavity formed by the mold base, the mold base is arranged on the bottom of the FRP flange, the briquetting block is arranged on the top of the FRP flange, the mandrel is connected with the mold base, Both the press block and the die base are provided with bolt holes, and the guide posts are arranged in the bolt holes for fixing and connecting the press block and the die base, and the outside of the die base is also Surrounded by a positioning sleeve, the top of the positioning sleeve is in contact with the bottom of the pressing block, and the FRP flange includes a flange cylinder and a flange ring. The invention has a simple structure, can greatly reduce the local stress concentration and excessive deformation of the flange due to unreasonable structure, and can improve the strength and rigidity of the whole FRP flange.

Description

technical field [0001] The invention relates to a mold structure specially used for processing integral FRP flanges, belonging to the technical field of flange processing. Background technique [0002] Flanges are the most widely used detachable connecting parts in pipes and containers. With the increasing use of FRP pipes and containers, the performance and production of FRP flanges have gradually attracted attention. Commonly used FRP flanges are mostly used for medium and low pressure pipes and containers with a pressure not greater than 3MPa. The main structures include integral flanges, bonding flanges and loop flanges. [0003] Integral flanges are generally equal wall thickness flat flanges. The advantage of this structure is that the flange ring and the cylinder are integrally formed, and the reinforced glass fiber and fabric are continuous, which can give full play to the characteristics of high strength and easy forming of FRP. The disadvantage is that the equal w...

AI Technical Summary

Problems solved by technology

The advantage of this structure is that the flange ring and the cylinder are integrally formed, and the reinforced glass fiber and fabric are continuous, which can give full play to the characteristics of high strength and easy forming of FRP. The disadvantage is that the equal wall thickness structure and the internal stress distribution of the flange are different. Matching, it is difficult to achieve the design requirements of equal strength and equal stiffness; in use, the joint between the flange ring and the cylinder is prone to large deformation under the action of longitudinal stress, and even micro cracks and cracking damage

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