Patent ID: 9511521
Filing Date: 2016-12-06
CPC Classification: B29C,B30B,F16J

Claim Text:
1. A punch arrangement for a press, comprising at least one press punch ( 18 , 20 ) having a punch head ( 26 , 28 ), a tool region ( 30 , 32 ) and a punch shank ( 22 , 24 ) extending between the punch head ( 26 , 28 ) and tool region ( 30 , 32 ), further comprising at least one punch guide ( 14 , 16 ) having at least one guide bore ( 74 , 76 ) in which the punch shank ( 22 , 24 ) of the at least one press punch ( 18 , 20 ) is guided in an axially movable manner and at least one variable length sealing sleeve ( 80 ) at least partially surrounding the punch shank ( 22 , 24 ), which the at least one sealing sleeve is retained with its first end against the punch shank ( 22 , 24 ) or against the tool region ( 30 , 32 ) of the at least one press punch ( 18 , 20 ), characterised in that the at least one sealing sleeve ( wherein, when the press punch is inserted in the at least one guide bore, the second end of the at least one sealing sleeve is not able to be released from its positive captured position against the inner wall of the at least one guide bore and thus not able to be released from the at least one guide bore.