Powder metallurgy self-cleaning mold

Abstract

The invention discloses a powder metallurgy self-cleaning mold. The powder metallurgy self-cleaning mold structurally comprises an injection molding hole, an upper top cover, a fixing rod and a machine body, wherein the bottom end of the injection molding hole is welded with the top end of the upper top cover, the upper top cover is located above the machine body, the top end of the fixing rod isvertically embedded into the bottom end of the upper top cover, and the bottom end of the fixing rod is vertically embedded into the top end of the machine body; and the machine body comprises a flowspeed control mechanism, a powder collection driving device, a dust collection mechanism and a demolding mechanism. By improving an internal structure, the size of an injection molding hole can be automatically changed according to the circulation speed of an injection molding device in the injection molding process of the raw materials, and the injection molding circulation speed is steadily controlled, so that the situation that air holes are formed in the surface of a formed workpiece due to the overhigh flow speed is avoided; and meanwhile, the bottom of the mold can be uniformly vibratedduring the mold stripping so as to drive the workpiece to fall, so that the surface abrasion of the workpiece during the prying is avoided.

Description

technical field [0001] The invention relates to the field of molds, in particular to a powder metallurgy self-cleaning mold. Background technique [0002] There are many kinds of molds, which use various methods such as injection molding, blow molding, extrusion, die-casting or forging, smelting, stamping, etc. to press and shape the raw materials in the mold, and make solid workpieces, which are widely used in the market. Large-scale mass production, but the existing molds have the following disadvantages; [0003] 1. When using the mold in the prior art, it is necessary to align the injection molding device on the injection port of the mold. The flow rate of the injection molding device often flows according to the density of the raw material. When the solution density is small and the speed is fast, It is easy to cause the raw materials to be filled in the mold before they reach the bottom of the mold, and the subsequent raw materials will rush up, and it is easy to brin...

AI Technical Summary

Problems solved by technology

[0003] 1. When the prior art mold is used, it is necessary to align the injection molding device on the injection port of the mold. The flow rate of the injection molding device often flows according to the density of the raw material. When the solution density is small and the speed is fast, It is easy to cause the raw materials to be filled in the mold before they reach the bottom of the mold, and the subsequent raw materials will rush up, and it is easy to bring the external gas into the mold, so that the raw materials are not uniform in the mold, and the processed products Air holes are prone to appear on the surface of the workpiece, making the workpiece not up to the standard of the production industry

[0004] 2. At the same time, when the equipment is carrying out mold removal, it is often used to turn over the top cover and use tools to lift the formed workpiece. The method is not uniform in force, which is very easy to cause damage to the surface of the mold workpiece, causing the workpiece to be partially broken. Inside the mold, the workpiece is scrapped and cannot be further processed

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