公开(公告)号：JP2000126843A

公开(公告)日：2000-05-09

申请号：JP29928599

申请日：1999-10-21

Applicant: EMHART INC

Inventor： BRADBURY JAMES M ,  BANDUCCI DAVID J ,  CALKINS DAVID S ,  JOHN OHARA ,  PETER THOMAS

IPC: B21J15/32 ,  B21J15/04 ,  B21J15/06 ,  B21J15/18 ,  B21J15/28 ,  B21J15/34 ,  B23P19/00

Abstract: PROBLEM TO BE SOLVED: To speed up a charging capacity by arranging a piston in a housing, mounting a supply arm to an end part of a piston rod, engaging a cam sleeve arranged in the housing and a cam arranged to the piston and rotating the piston rod in following reciprocation of the piston. SOLUTION: A rod 72 is connected to a piston reciprocating in a main body tube 70 to support a supply arm 74. A cam groove 92 arranged to the main body tube 70 is engaged to a cam follow member 88. When driving the piston 76 in an arrow mark B direction, the rod 72 is rotated, the supply arm 74 is rotated to a position on the same straight line with a tension adopter and a nose part of the jaw case. A rivet R transferred by a rivet transfer tube 39 is blown to the nose part by a pneumatic pressure and is held by vacuum.