Importance

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Abstract

In case of administrating weight and thickness of a molded article molded by compressing powder material, if the thickness of the sampled molded article is measured, it takes time to conduct thickness control based on the measured thickness. The compressive molding machine for powder material comprises a powder material compressing means that molds a molded article by compressing powder material filled between members for compression with the members for compression approaching each other to a predetermined distance, a powder material quantity adjusting means that adjusts a quantity of the powder material to be filled, a pressure detecting means that detects compression pressure of the powder material by means of the powder material compressing means, a weight measuring means that samples the molded article and measures weight of the molded article, a powder material quantity controlling means that controls the powder material quantity adjusting means based on a measured value of the weight measured by the weight measuring means, and a compression controlling means that controls the powder material compressing means based on the compression pressure detected by the pressure detecting means so that the compression pressure falls in a predetermined pressure range in order to control thickness of the molded article at least after the powder material controlling means controls the powder material quantity adjusting means at a predetermined number of times, in case that the measured value of the weight corresponds to a predetermined weight range, wherein the powder material compressing means is controlled by the compression controlling means while the powder material quantity adjusting means is controlled by the powder material controlling means.

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First Claim