Double-support pressurizing mechanism

Abstract

The invention relates to a double-support pressurizing mechanism, which comprises two symmetric ejector rods connected to two ends of an upper punch. The lower portion of each ejector rod drives a rotatable shifting fork stopper through a cylinder, equal-height support adjusting screw rods are arranged below the shifting fork stoppers, an open rod capable of contacting with each shifting fork stopper is arranged between each cylinder and the shifting fork stopper, and a mechanism for preventing a female die from descending is formed when the two shifting fork stoppers are supported on the support adjusting screw rods. By the aid of a two-side symmetric structure of the double-support pressurizing mechanism, pressure is evenly distributed on the double support adjusting screw rods, main pressing force is decomposed into component force, a pressure stress on the mechanism is decomposed into two smaller pressure stresses, the requirements of part materials and heat treatment are lowered on the premise of meeting functional requirements, and the functions of a single large-sized structure are realized by a structure of a smaller size.

Description

technical field [0001] The invention relates to a double-support pressing mechanism, which belongs to the technical field of powder metallurgy products. Background technique [0002] During the molding process of powder products, after the product is pressurized and the second press is completed, the intermediate density of the product is quite different from that at both ends. In order to increase the intermediate density of the product, the product must be pressurized for the third time to achieve the middle The purpose of increasing the density; the existing pressing mechanism is often a single structure, that is, the total pressing force is borne by a pressing mechanism, which undoubtedly puts forward higher requirements on the mechanical properties and mechanical properties of the pressing mechanism itself. It is prone to damage after a period of time, which will affect the molding quality of the product and increase the production cost of the product, so it needs to be...

AI Technical Summary

Problems solved by technology

[0002] During the molding process of powder products, after the product is pressurized and the second press is completed, the intermediate density of the product is quite different from that at both ends. In order to increase the intermediate density of the product, the product must be pressurized for the third time to achieve the middle The purpose of increasing the density; the existing pressing mechanism is often a single structure, that is, the total pressing force is borne by a pressing mechanism, which undoubtedly puts forward higher requirements on the mechanical properties and mechanical properties of the pressing mechanism itself. It is prone to damage after a period of time, which will affect the molding quality of the product and increase the production cost of the product, so it needs to be improved

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