Counterholder device for an apparatus for removing knockout parts from a workpiece sheet or the like, and apparatus having a counterholder device

Abstract

Counterholder device ( 10; 10 a to 10 f ) for an apparatus ( 100 ) for removing knockout parts ( 1; 1 f ) from a workpiece sheet ( 2 ) or the like, including a basic body ( 11 ) which can be arranged in a cutout ( 104 ) of a die ( 105 ) of the apparatus ( 100 ) and which is connected to a tongue-like portion ( 12; 12 c ) which projects into the cutout ( 104 ) of the die ( 105 ), wherein the shape of the cutout ( 104 ) is adapted to the shape of the knockout part ( 1; 1 f ) and wherein the tongue-like portion ( 12; 12 c ) interacts with a knockout element ( 103; 103 d ), which penetrates into the cutout ( 104 ) and in so doing is arranged at a distance from the tongue-like portion ( 12; 12 c ), and with an edge portion of the knockout part ( 1; 1 f ), wherein at least the tongue-like portion ( 12; 12 c ) is rigidly formed in such a way that it is arranged in a fixed position when interacting with the knockout part ( 1; 1 f ) and the knockout element ( 103; 103 d ).

1 . Counterholder device ( 10 ;  10   a  to  10   f ) for an apparatus ( 100 ) for removing knockout parts ( 1 ;  1   f ) from a workpiece sheet ( 2 ) or the like, comprising a basic body ( 11 ) which can be arranged in a cutout ( 104 ) of a die ( 105 ) of the apparatus ( 100 ) and which is connected to a tongue-like portion ( 12 ;  12   c ) which projects into the cutout ( 104 ) of the die ( 105 ), wherein the shape of the cutout ( 104 ) is adapted to the shape of the knockout part ( 1 ;  1   f ) and wherein the tongue-like portion ( 12 ;  12   c ) interacts with a knockout element ( 103 ;  103   d ), which penetrates into the cutout ( 104 ) and in so doing is arranged at a distance from the tongue-like portion ( 12 ;  12   c ), and with an edge portion of the knockout part ( 1 ;  1   f ), wherein at least the tongue-like portion ( 12 ;  12   c ) is rigidly formed in such a way that it is arranged in a fixed position when interacting with the knockout part ( 1 ;  1   f ) and the knockout element ( 103 ;  103   d ). 
     
     
         2 . Counterholder device according to  claim 1 , wherein the basic body ( 11 ) and the tongue-like portion ( 12 ;  12   c ) consist of hard material. 
     
     
         3 . Counterholder device according to  claim 2 , wherein the basic body ( 11 ) and the tongue-like portion ( 12 ;  12   c ) are connected to one another in one piece and are formed as a stamped/bent part. 
     
     
         4 . Counterholder device according to  claim 2 , wherein the basic body ( 11 ) and the tongue-like portion ( 12 ;  12   c ) are connected to one another in one piece and are formed as a cast part or milled part. 
     
     
         5 . Counterholder device according to  claim 1 , wherein the basic body ( 11 ) is accommodated in the cutout ( 104 ) with a form and force fit, and wherein the basic body ( 11 ) has a conical shape. 
     
     
         6 . Counterholder device according to  claim 1 , wherein the upper side of the basic body ( 11 ) and of the tongue-like portion ( 12 ;  12   c ) terminates at least approximately flush with the upper side of the die ( 105 ). 
     
     
         7 . Counterholder device according to  claim 1 , wherein the tongue-like portion ( 12 ;  12   c ) has a structured shape on the side facing away from the basic body ( 11 ). 
     
     
         8 . Counterholder device according to  claim 7 , wherein the structured shape is formed as a toothing ( 15 ;  15   a;    15   c;    15   e;    15   f ). 
     
     
         9 . Apparatus ( 100 ) for removing knockout parts ( 1 ) from a workpiece sheet ( 2 ), having a counterholder device ( 10 ;  10   a  to  10   e ) according to  claim 1 . 
     
     
         10 . Counterholder device according to  claim 2 , wherein the basic body ( 11 ) and the tongue-like portion ( 12 ;  12   c ) consist of metal.