It is provided on one end side of the rubber molding box and the rubber molding box which have the convex section which

摘要

PROBLEM TO BE SOLVED: To realize a manufacturing method for an insert main body having a female screw part which has a closed part at one end thereof and a pressure-molded object of the same and to enhance the productivity and yield of pressure-molding.;SOLUTION: An insert main body retaining mold 7 is formed by a rubber mold 8, which has an inner wall 8a having a curved surface shape for forming the outer diameter of the insert main body and a protruded part 8b for forming the notched recessed part of the insert main body, a lower lid 9 fitted to the lower end of the rubber mold 8, a core 10 fitted in the recessed part 9c of the lower lid 9 and having a male screw part 10b and a flange part 10c, and an upper lid 11 fitted to the upper end of the rubber retaining mold 8 without coming into contact with the core 10. The pressure-molded object of the insert main body is formed by inserting the insert main body mold 7 filled with a ceramic powder raw material 12 in a pressure mold A and pressing the same and further baked to form the insert main body.;COPYRIGHT: (C)2005,JPO&NCIPI