Marking punch for a plastics molding tool has a threaded central part which engages with an internally threaded bore in a cylindrical outer body

摘要

A cylindrical body(2) has a central bore(3) with an internal thread(21) and an axial supporting face(4). A rotatable central part(1) comprising an annular collar(10) with an end marking face(15) and an externally threaded bolt(14) is inserted into the bore(3). Rotation of the central part engages the internal and external(18) threads and continued rotation disengages them. A cylindrical body(2) has a central bore(3) with an internal thread(21) and an axial supporting face(4). A rotatable central part(1) comprising an annular collar(10) with an end marking face(15) and an externally threaded bolt(14) is inserted into the bore(3). Rotation of the central part engages the internal and external(18) threads and continued rotation disengages them. A pre compressed spring(5) between the supporting face and the central part inner end face(17) ensures that semi-positive contact is maintained between threads in their end positions.