Die set leader pin
First Claim
1. An elongated leader pin for a die set, said leader pin having a bore therethrough and an elongated button slidably positioned in said bore whereby a portion of said button normally extends outwardly from a first end of said leader pin, said bore being longer than the length of said button to enable said button to be fully retracted into said leader pin during the working stroke of the die set, there being further included spring means in said bore for urging said button outwardly of the first end of said leader pin whereby said button urges one section of the die set away from another section of the die set after the working stroke thereof to return said button portion to its normally extended position.
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Accused Products
Abstract
A novel die set and a power pack that is adapted to be mounted thereon define, in part, the improved punch press comprising the present invention. Hollow, magnetizable leader pins having spring actuated stripper buttons therein are used as the armature for the power pack which also includes coil positioned concentrically about at least one end of the leader pins. The coil may be made in several discrete sections which are electrically connected parallel to each other and where more than one coil is utilized, the plurality of coils are also connected in parallel to each other. The power pack comprising the present invention is readily attachable to the movable portions of the die set.
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Citations
4 Claims
- 1. An elongated leader pin for a die set, said leader pin having a bore therethrough and an elongated button slidably positioned in said bore whereby a portion of said button normally extends outwardly from a first end of said leader pin, said bore being longer than the length of said button to enable said button to be fully retracted into said leader pin during the working stroke of the die set, there being further included spring means in said bore for urging said button outwardly of the first end of said leader pin whereby said button urges one section of the die set away from another section of the die set after the working stroke thereof to return said button portion to its normally extended position.
Specification