Apparatus for executing hemming process

Details Apparatus for executing hemming process Apparatus for executing hemming process

1993-07-21

1994-10-25

Watson, Robert C.

Metal working

Means to assemble or disassemble

Overedge assembling means

292435, B23P 1100

Patent

active

053576659

ABSTRACT:
The apparatus according to the invention separates a cam structure which activates operation of a pre-hemming structure used for supporting a blade available for preliminarily folding a hem flange into two units including a lower cam structure used for pressuring a movable member of the pre-hemming structure in the downwardly slant direction corresponding to the preliminary folding direction and an upper cam structure for activating operation of the lower cam structure. After completing the preliminary folding process against the hem flange, the upper cam structure is retracted to permit the lower cam structure to be free from pressuring force transmitted in the preliminary folding direction by the movable member. In consequence, the preliminary folding blade is securely prevented from repeatedly and uselessly being operated on the way of lifting an upper mold after completion of the hemming process.

REFERENCES:
patent: 4660265 (1987-04-01), Pallmeyer
patent: 5184384 (1993-02-01), Lipp
patent: 5224253 (1993-07-01), Sawa
patent: 5243748 (1993-09-01), Morello

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