Powder metallurgy forming mold for damper supporting seat

Abstract

The invention relates to a powder metallurgy forming mold for a damper supporting seat. The powder metallurgy forming mold for the damper supporting seat comprises a press upper cylinder, a lower center cylinder, a fixed mold frame plate, a second mold frame plate, a first mold frame plate and an outer mold plate and further comprises a second lower punch, wherein the fixed mold frame plate, the second mold frame plate, the first mold frame plate and the outer mold plate are arranged in a laminated mode in sequence from bottom to top and from inside to outside; the bottom end of the second lower punch is fixedly connected with the first mold frame plate; a center channel for containing a large core rod is formed in the center of the second lower punch; the lower end of the large core rod is connected with the lower center cylinder through a lower center cylinder connecting plate; a plurality of small channels for containing small core rods are uniformly formed between a lower center channel and a forming protrusion, and the lower ends of the small core rods are fixedly connected with the second mold frame plate; a first lower punch and an outer mold are sequentially disposed far from the periphery of the second lower punch; the lower end of the first lower punch is fixedly connected to the fixed mold frame plate; the outer mold is fixedly connected with the outer mold plate; an upper outer punch and an upper inner punch are sequentially disposed above the position between the outer mold and the large core rod; the top end of the upper outer punch is connected with an upper outer sleeve; the top end of the upper inner punch is connected with the press upper cylinder; an upper center channel for containing the large core rod and a concave part for containing the second lower punch and the small core rods are formed in the center of the upper inner punch.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy mold manufacturing, in particular to a powder metallurgy molding mold for a shock absorber support seat. Background technique [0002] The support seat in the car shock absorber is generally formed by powder metallurgy mold, and there are many groups of throttle holes, or square holes, or round holes in the ring belt of the valve surface. The cross-section of the square hole is large, and the square rod passing through the mold can be pressed out by the integrated structure with the second punch, but the cross-section of the circular hole is very small, and it is multi-hole, 4 holes or 6 holes or 8 holes, the hole diameter Generally between Φ1-Φ2, if a circular mandrel is used for forming, the mandrel is usually made very long, and it is very easy to be broken due to force during the powder pressing process. Usually small orifices are manufactured by post-sequence machining methods, usi...

AI Technical Summary

Problems solved by technology

Usually small orifices are manufactured by post-sequence machining methods, using drilling technology. The disadvantages of this processing method are: many holes and long processing cycle; The process is easy to cause bumps on the end face valve line, resulting in an increase in the scrap rate

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