Single-pass integral molding device for M-shaped metal sealing ring

Abstract

The invention provides a single-pass integral molding device for an M-shaped metal sealing ring. The single-pass integral molding device is characterized by comprising a bottom plate (13); a pressing plate (1), an upper feeding press block (2), an upper fixing plate (4), an upper sealing press block (5), a liquid chamber module (8), a lower sealing press block (9), a lower fixing plate (10) and a lower feeding press block (12) are sequentially arranged on the bottom plate (13) from top to bottom and are of an annular structure and consistent in axis; and the outer ring wall face of the upper sealing press block (5), the outer ring wall face of the liquid chamber module (8) and the outer ring wall face of the lower sealing press block (9) are flush with one another, and a movable mold (6), a middle mold (17) and an annular reinforced lantern ring (18) are sequentially arranged outwards from the outer ring wall faces, wherein the middle mold (17) is formed by two symmetrical half molds and of an annular structure, and the movable mold (6) is divided into a movable upper mold body (15) and a movable lower mold body (19).

Description

[0001] Technical field: [0002] The invention relates to a molding die, in particular to a molding die for an aeroengine sealing ring. [0003] Background technique: [0004] The thin-walled "M"-shaped metal sealing ring is installed on the key part of the aero-engine. It is a type of stator sealing structure with a new type of sealing form and better sealing effect. It has good resilience performance, strong vibration absorption ability and large deformation range, etc. Features, it is used for sealing the end face of gas and sealing the air passage of the engine in the state of high temperature gas above 600°C to prevent gas leakage. The schematic diagram of the parts is as follows figure 1 As shown, compared with the "C" shape and "U" shape metal sealing ring, it can provide higher elastic deformation, and has been widely recognized and developed rapidly at home and abroad in recent years. This type of component has the characteristics of ultra-thin wall thickness (general...

AI Technical Summary

Problems solved by technology

However, it has certain technical problems and defects, which are mainly reflected in: (1) Two steps of initial molding and final molding are adopted, and two sets of mold devices need to be designed and manufactured respectively, and the final molding mold needs to be integrally processed to produce complex micro-sized parts. On the one hand, the processing is difficult, which is not conducive to controlling the cost and the processing cycle; (2) the mold replacement is inconvenient and the operation is cumbersome, which reduces the production efficiency to a certain extent and increases the labor intensity; (3) the installation of the preformed blank before the final molding is difficult , it is easy to cause scratches and deformation of the blank; (4) There are positioning errors between the mold and the parts between different processes, and the forming process is not easy to control accurately, which has an adverse effect on the surface quality and forming accuracy of the thin-walled parts, and it is easy to cause deformation of the final part. lead to low yield

[0007] To sum up, there is no single-pass overall molding device for metal sealing rings with complex profiles in China.

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