Radial reform head

Details Radial reform head Radial reform head

1985-06-14

1986-11-04

Larson, Lowell A.

Wireworking

Crimping

B21F 4500

Patent

active

046205721

ABSTRACT:
A radial reform head for reforming the shape of the perimeter pins of a semiconductor module is provided. The radial reform head has a plate having edges defining an aperture, wherein the dimensions of the edges are such that the desired length of a row of reformed pins is equal to the length of the edges. A module handler for inserting the pins of a module into a stationary insert in the aperture is also provided.
Side reform jaws, preferably four, for reforming the perimeter rows of pins except for the corner pins, and corner reform jaws, preferably four, for reforming the corner pins are situated so that they can be moved radially to and from the pins by pneumatic cylinders. The reform jaws have extended portions which contact the pins when the cylinders are actuated by a signal from the module handler, and force the pins against the edges which define the aperture of the plate thus reforming the pins to a particular dimension. The cylinders and jaws have common center lines and all jaws and cylinders simultaneously move radially from the reform head center when the cylinders are actuated.

REFERENCES:
patent: 2196619 (1940-04-01), Andresen
patent: 3331912 (1967-07-01), Stricker et al.
patent: 3427849 (1969-02-01), Ainsworth et al.
patent: 3515175 (1970-06-01), Hudson
patent: 3728769 (1973-04-01), Judge et al.
patent: 4293998 (1981-10-01), Kawa et al.
patent: 4411149 (1983-10-01), Delorme
patent: 4470289 (1984-09-01), Sinclair et al.
J. Funari, Module Pin Reformer, Oct. 1971, pp. 1 & 2.

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