Apparatus to straighten the leads of a pin grid array

Details Apparatus to straighten the leads of a pin grid array Apparatus to straighten the leads of a pin grid array

1985-09-13

1987-02-17

Husar, Francis S.

Wireworking

Wire straightening

140140, B21F 102

Patent

active

046432345

ABSTRACT:
A motor driven apparatus to efficiently and reliably straighten the leads of a pin grid array (PGA) so that the leads are aligned parallel with one another and perpendicular to the flat PGA body. The apparatus includes a nest of parallel knife blades which is mounted for linear travel so as to be either introduced to or retracted from the grid of PGA leads. The nest of knife blades is carried by an oscillator assembly which is adapted to automatically oscillate (i.e. pivot) the blades between respective rows of PGA leads. When the nest of knife blades is introduced to the grid of PGA leads, the back-and-forth oscillations of the knife blades will cause the blades to engage and straighten any bent leads. The PGA is carried by a rotatable table assembly. When the nest of knife blades is retracted from the grid of PGA leads, the table assembly may be automatically rotated (e.g. by 90 degrees) so that the grid of leads is oriented for repeated engagement by the nest of knife blades, whereby bent leads may be reliably straightened, regardless of the angle at which such leads are bent.

REFERENCES:
patent: 3404712 (1968-10-01), Soverkropp
patent: 3520336 (1970-07-01), Zemek

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