Method and apparatus for removing a carrier part from a carrier with a single operation, and a product removed from a carrier

Abstract

The invention relates to a method for removing from a carrier part with a housing arranged thereon, which carrier part contains openings on the side of the carrier remote from the housing which are filled with encapsulating material, wherein the carrier is engaged on two sides by cutting elements provided with at least one cutting edge, which cutting elements are subsequently moved toward each other such that the carrier, characterized in that before the separation takes place the cutting edge projecting relative to a base of the cutting element is urged into the carrier such that the carrier deforms permanently. The invention also relates to a thus manufactured product and to an apparatus for mechanically performing the method.

1 . Method for removing from a carrier ( 1 ) a carrier part with a housing ( 2 ) arranged thereon, wherein the carrier ( 1 ) is engaged on two sides by cutting elements ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ) provided with at least one cutting edge ( 13 ,  14 ;  20 ,  21 ), which cutting elements ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ) are subsequently moved toward each other such that the carrier part is separated from the remaining part of the carrier ( 1 ), and before the separation takes place the cutting edge ( 13 ,  14 ;  20 ,  21 ) projecting relative to a base of the cutting element ( 5 ,  6 ;  11 ,  12 ;  18 ;,  19 ) is urged into the carrier  1 ) such that the carrier ( 1 ) deforms permanently, 
 characterized in that    the carrier part with the housing ( 2 ) contains openings ( 4 ) on the side of the carrier ( 1 ) remote from the housing ( 2 ) which are filled with encapsulating material, and the carrier part with the housing ( 2 ) is removed from the carrier ( 1 ) by-punching during which punching the carrier part with the housing ( 2 ) is supported by a first cutting element ( 5 ,  12 ,  18 ,  19 ) on the side of the carrier ( 1 ) remote from the housing ( 2 ).    
     
     
         2 . Method as claimed in  claim 1 , characterized in that the carrier ( 1 ) is placed on one side on the first cutting element ( 5 ,  12 ,  18 ,  19 ) provided with a recess and a second cutting element ( 6 ,  11 ) having a cutting edge ( 13 ) with dimensions which correspond with the dimensions of the recess in the first cutting element ( 5 ,  12 ,  18 ,  19 ) is moved to the first cutting element ( 5 ,  12 ,  18 ,  19 ).  
     
     
         3 . Method as claimed in  claim 1  or  2 , characterized in that the projecting cutting edge ( 13 ,  14 ;  20 ,  21 ) of a cutting element ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ) is urged into the contact side of the carrier ( 1 ) with the cutting element ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ).  
     
     
         4 . Method as claimed in any of the foregoing claims, characterized in that after performing of the separating operation the cutting elements ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ) are moved apart and the separated carrier part is released from the cutting elements ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ), wherein one side of the carrier part connecting onto the separation edge is provided with a deformation ( 16 ).  
     
     
         5 . Method as claimed in  claim 4 , characterized in that the carrier part on the side of the carrier ( 1 ) remote from the housing ( 2 ) connecting onto the separation edge is provided with a deformation ( 16 ).  
     
     
         6 . Carrier part with a housing ( 2 ) arranged thereon, manufactured with the method as claimed in any of the foregoing claims, characterized in that the carrier part contains openings ( 4 ) on the side of the carrier ( 1 ) remote from the housing ( 2 ) which are filled with encapsulating maternal, and one side of the carier part connecting onto the separation edge is provided with a deformation ( 16 ).  
     
     
         7 . Apparatus for removing from a carrier ( 1 ) a carrier part with a housing ( 2 ) arranged thereon, comprising cutting elements ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ) provided with at least one cutting edge ( 13 ,  14 ;  20 ,  21 ) for engaging the carrier ( 1 ) on two sides, which cutting elements ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ) are displaceable relative to each other such that the carrier part can be separated from the remaining part of the carrier ( 1 ), and at least one of the cutting elements ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ) comprises a cutting edge ( 13 ,  14 ;  20 ,  21 ) projecting relative to a base of the cutting element ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ) for applying a permanent deformation ( 16 ) in the carrier ( 1 ) on at least one side, 
 characterised in that the apparatus comprises a first cutting element ( 5 ,  12 ,  18 ,  19 ) for supporting the carrier part with the housing ( 2 ) on the side of the carrier ( 1 ) remote from the housing ( 2 ), which carrier part contains openings on the side of the carrier ( 1 ) remote from the housing ( 2 ),which are filled with encapsulating material, and a second cutting element ( 6 ,  11 ) cooperating with the first cutting element ( 5 ,  12 ,  18 ,  19 ) for removing the carrier part from the carrier ( 1 ) by punching.    
     
     
         8 . Apparatus as claimed in  claim 7 , characterized in that the projecting cutting edge ( 13 ,  14 ;  20 ,  21 ) has a form angled toward the base of the cutting element ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ).  
     
     
         9 . Apparatus as claimed in  claim 7  or  8 , characterized in that the projecting cutting edge ( 13 ,  14 ;  20 ,  21 ) comprises an edge ( 22 ) running substantially parallel to a carrier ( 1 ) and a sloping part ( 23 ) connecting thereto and having a form at an angle to the base of the cutting element ( 5 ,  6 ;  11 ,  12 ;  18 ;  19 ).  
     
     
         10 . Apparatus as claimed in any of the claims  7 - 9 , characterized in that the apparatus also comprises means for positioning the carrier ( 1 ).  
     
     
         11 . Apparatus as claimed in any of the claims  7 - 10  characterized in that the means for positioning the carrier ( 1 ) are formed by a cutting plate.