Air valve bridge cold extrusion machining die with pressure reduction columns

The utility model provides a valve bridge cold extrusion processing mould with decompression column, including stamping die (1), main die (2) and frame (3), the stamping die (1) is movably arranged in the upper part of frame (3), the main die (2) is arranged in the lower part of frame (3), the stamping die (1) has the degree of freedom of moving towards the main die (2), the main die (2) and the stamping die (1) are both insert structure, and the main die (2) and the stamping die (1) are connected with the frame (3). Pressure relief holes are formed in the two sides of the upper surface of the main die (2), and the stamping die (1) is provided with stand column structures corresponding to the pressure relief holes in position. Compared with traditional machining methods such as cutting and casting, the production efficiency is greatly improved, meanwhile, the stability of the size and the structure of a product is guaranteed, and compared with a cold extrusion machining method without a pressure reduction col