Patent ID: 8657594
Filing Date: 2014-02-25
Classification: B30B,Y10T

Abstract:
1. A punch of a compression molding machine for compressing and molding a powdery material filled in a die hole, the punch comprising: a punch tip member inserted into the die hole, for compressing the powdery material in the die hole; a holder having a distal end that is attached with the punch tip member and is provided with at least one projection projecting radially outward, the holder being driven to move forward and backward with respect to the die hole; a cap having a punch tip retaining portion for retaining the punch tip member, an opening allowing the distal end of the holder to be inserted thereinto, a receiving portion allowing the projection of the holder to be inserted thereinto and extracted therefrom in an axial direction, and a disengagement inhibiting portion provided adjacent to the receiving portion in a circumferential direction so as to be engaged with the projection of the holder and to inhibit the projection from being inserted and extracted in the axial direction, the receiving portion and the disengagement inhibiting portion being provided on a peripheral wall of the opening; and a rotation inhibiting member engaged with the holder and the cap attached with the punch tip member so as to inhibit axial rotation of the cap relative to the holder.