Electrically actuated power press
OwnerNorman R. Doherty, Richard F. Dohertyinventors
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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 means positioned concentrically about at least one end of the leader pins. The coil means may be made in several discrete sections which are electrically connected parallel to each other and where more than one coil means is utilized, the plurality of coil means 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.
Claims31
A power pack for use with a die set having a first non-movable die set portion and a second die set portion that is movable relative to the first portion as well as to at least one elongated, magnetizable leader pin, said power pack comprising the combination of:
- a. a housing adapted to be secured to said second die set portion, said housing being arranged to move together therewith;
- b. annular coil means having a bore therein, said coil means being mounted in said housing with at least a portion of the leader pin being located in said bore of said coil means when said housing is secured to the second portion of the die set;
- and
- c. means for connecting said coil means to a source of electrical energy.
An electrically actuated power press comprising:
- a. a first, upper section that is movable and a second, lower section that is non-movable and which is in opposition to said first, upper section, said first and said second sections each being adapted to receive cooperating tool means;
- b. at least one bushing means secured to said first, upper section;
- c. at least one elongated, magnetizable leader pin mounted in said second, lower section to slidably receive said bushing means whereby said first, upper section is relatively movable with respect to said second, lower section to thereby permit the tool means to operate on a workpiece positioned therebetween;
- d. a housing adapted to be secured to said first, upper section, said housing being arranged to move together therewith;
- e. annular coil means having a bore therein, said coil means being mounted in said housing with at least a portion of the leader pin being located in said bore when said housing is secured to said second, lower section;
- and
- f. means for connecting said coil means to a source of electrical energy.
Dependencies are inferred from the claim text.