Importance

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Abstract

This invention provides a rotary compression molding machine suitable for manufacture of a core-incorporated molded article, wherein: at least an upper punch comprises a center punch and an outer punch, both of which are slidable and capable of pressing, the upper center punch having a head part capable of projecting from a head part of the upper outer punch, the rotary compression molding machine including: a plurality of powdery/granular material feeding and filling sections; guide means for guiding the center punch and the outer punch either separately or as one unit; an upper pre-compression roll operative to press the center punch or both the center punch and the outer punch; lower pre-compression means making a pair with the upper pre-compression roll; engagement means for causing the upper center punch to engage the upper outer punch with the head part of the upper center punch in a state projecting maximally from the head part of the upper outer punch to allow the upper center punch and the upper outer punch to operate together as one unit; an upper main compression roll operative to press the upper center punch and the upper outer punch turned into one unit by engagement therebetween; and lower main compression means making a pair with the upper main compression roll.

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First Claim