Powder metallurgy forming mold carrier with two point five or three point five lower palates

Abstract

The invention relates to a powder metallurgy forming mold carrier with two point five or three point five lower palates, which is characterized in that a lower framework comprises a female mold plate, an upper fixing plate, floating plate, a lower fixing plate and a lower mold plate, wherein four corners of the female mold plate are fixedly connected with the lower mold plate by lower guide columns, four corners of the upper fixing plate and four corners of the lower fixing plate are fixedly connected by support columns, the floating plate is driven by a floating cylinder, a female mold step forming structure or product shaping-supporting structure is arranged between the female mold and the upper fixing plate, a pulling rod mechanism is arranged between the female mold plate and the floating plate, and a floating material stamping and adding fine-adjustment mechanism is arranged on the floating plate. The powder metallurgy forming mold carrier has the advantage of being capable of realizing two functions of inner and outer step forming and shaping of multi-stepped products; in addition, the powder metallurgy forming framework can finish pressing of a multi-stepped metal product at one time, the pressing quality is good, the pressing efficiency is high, the adjustment is convenient, the mold carrier accuracy is high, the rigidity is high and the stability is good; and a mold has a simple and reasonable structure, and is convenient to adjust.

Description

technical field [0001] The invention relates to a mold base of a powder forming hydraulic press, in particular to a 2.5 and 3.5 mold base for powder metallurgy molding. Background technique [0002] The powder metallurgy forming mold base is the frame for installing the powder metallurgy mold, which is used to connect with the press, transmit pressure and various actions, and make the main parts of the mold complete the powder forming requirements. The traditional powder metallurgy molding formwork is mainly composed of female mold support plate, die punch support plate, mandrel support plate and other templates, plus guide pillars, guide sleeves, tie rods, etc. Three, up two down two, up two down three and so on. The disadvantages of the current powder metallurgy molding formwork are: when forming inner stepped structural parts, the mold and The accessories of the mold are complicated, the production cost is high, and the accuracy is difficult to guarantee. Some inner ste...

AI Technical Summary

Problems solved by technology

The disadvantages of the current powder metallurgy molding formwork are: when forming inner stepped structural parts, the mold and The accessories of the mold are complicated, the production cost is high, and the accuracy is difficult to guarantee. Some inner stepped structural parts cannot be formed on the mold base of this structure; when supporting the female mold with stepped cavity, use Small hydraulic cylinder in the horizontal direction, the end of the small hydraulic cylinder is connected with a limit block, when pressed, the small hydraulic cylinder is ejected, and the end limit block is pressed against the small fixed plate below to act as a fixed limit to achieve support, and the support force is relatively large. Poor, the quality of the pressed product is unstable; the feeding limit of the floating plate is realized by setting the limit nut at the end of the piston rod of the floating cylinder. When adjusting, the limit nut needs to be manually rotated. Repeated adjustments lead to low efficiency; when pressing products with high outer steps and heights, it is necessary to increase the height of the female die accordingly, and the height of the floating punch, fixed punch or mandrel that cooperates with the female die must also be increased accordingly, otherwise After the female mold moves up, it cannot cooperate with floating punches, fixed punches or mandrels to form a lower closed cavity

This undoubtedly increases the manufacturing cost of the powder molding mold base, increases the consumption of materials, and is not conducive to market competition; in addition, in products that require multi-step molding, the relative height of the next die punch and the second die punch will always be longer or shorter. The short problem, as well as the wear and damage of the die punch during the forming process, the die punch after the wear and repair of the die punch will also be shorter

This kind of problem usually occurs when the mold and mold accessories are removed, and the accessories are reprocessed. The entire installation, debugging, disassembly, and processing sometimes need to be repeated many times, which is time-consuming, labor-intensive, and affects efficiency.

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