Isostatic-pressing dry-powder molding device

Abstract

The invention relates to an isostatic-pressing dry-powder molding device which comprises a mounting seat, a hopper used for holding powder materials, a hydraulic cylinder, an upper die mold, a lower mold and a PLC (programmable logic controller) system or an upper computer DSC (data communication system). The position at each of four corners of the bottom of the hydraulic cylinder is provided with a guide pillar fixed on the mounting seat, the upper mold is fixedly connected with a hydraulic cylinder piston, the four corners are sleeved with the guide pillars, and a plurality of punches are vertically evenly distributed on the bottom surface of the upper mold; the lower mold is arranged on the mounting seat, and mold cavities in one-to-one correspondence to the punches evenly distributed on the lower mold; the hopper is fixed on the rear side of the hydraulic cylinder, a plurality of connecting pipes communicated with the interior of the hopper are evenly arranged at the bottom of the hopper, and tail ends of the connecting pipes are in one-to-one correspondence to the mold cavities. By the arrangement, shortcomings that of easy occurrence of air vents, sinkholes and unstable thermal performance in traditional hot-press molding with slurry injection are removed, and the isostatic-pressing dry-powder molding device is high in product density, small in sintering shrinkage, high in production efficiency, adjustable in machining dimensional accuracy of sparking plugs and highly adaptable.

Description

Technical field: [0001] The invention relates to an isostatic pressing machine, in particular to an isostatic pressing dry powder forming device. Background technique: [0002] The function of the spark plug is to discharge the pulsed high-voltage electricity sent by the high-voltage wire, break down the air between the two electrodes of the spark plug, and generate electric sparks to ignite the mixed gas in the cylinder; as one of the key ignition components of gasoline or gas engines, the spark plug, It cooperates with the ignition system and the fuel supply system to make the engine work, and the reliability of the spark plug directly affects the power and exhaust emission of the engine; due to the increase of the cylinder compression ratio, the ignition voltage of the spark plug must be increased accordingly, so The working environment of spark plug porcelain insulators will become more and more harsh, while the traditional manufacturing method of spark plug porcelain in...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the deficiencies of the prior art and provide an isostatic pressing dry powder molding device for manufacturing spark plugs, which solves the defects of air holes, shrinkage cavities and thermal instability in traditional slurry injection hot pressing molding , high product density, small sintering shrinkage, high production efficiency, adjustable processing size accuracy of spark plug, strong applicability

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