Method of assembling magnetic pins into printed circuit boards

Details Method of assembling magnetic pins into printed circuit boards Method of assembling magnetic pins into printed circuit boards

1983-12-19

1985-04-16

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Electrical device making

29428, 29744, H05K 330

Patent

active

045106851

ABSTRACT:
Magnetic pins preswaged at an off-center point along their length are assembled into a printed circuit board by energizing a pair of electromagnets, disposed one above and the other beneath the circuit board, to cause the pins scattered over a template to become erect. This results in some of the pins being disposed with their shanks protruding through the holes in a magnetic plate disposed below the circuit board while others of the pins pass through the circuit board but do not protrude below the magnetic plate. Increasing the energization of the upper magnet causes the non-protruding pins to be ejected from the circuit board. Subsequent deenergization of the upper magnet results in further pins becoming disposed with their shanks protruding through the magnetic plate. The energization cycle of the magnets is repeated until the circuit board contains a pattern of pins defined by the template with all the pins oriented so that they protrude through the magnetic plate.

REFERENCES:
patent: 3061919 (1962-11-01), Tack
patent: 3386156 (1968-06-01), Griesemer et al.
patent: 3501825 (1970-03-01), Alexander et al.
patent: 3508314 (1970-04-01), Powell, Jr.
patent: 3574919 (1971-04-01), Reppert

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