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Module Pin Shear Station

IP.com Disclosure Number: IPCOM000074966D
Original Publication Date: 1971-Jul-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Bradley, J: AUTHOR [+3]

Abstract

As circuits become more dense on integrated circuit chips, the number of pins projecting from the lower surface of a substrate 10 upon which the integrated circuit chip is mounted has increased. This has raised a problem in shearing certain pins, which otherwise are used to form interconnections between circuits on the upper and lower surfaces of the substrate. As pin spacing has become more dense the material of the shear blade has of necessity been reduced thereby reducing the life of the blade.

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Module Pin Shear Station

As circuits become more dense on integrated circuit chips, the number of pins projecting from the lower surface of a substrate 10 upon which the integrated circuit chip is mounted has increased. This has raised a problem in shearing certain pins, which otherwise are used to form interconnections between circuits on the upper and lower surfaces of the substrate. As pin spacing has become more dense the material of the shear blade has of necessity been reduced thereby reducing the life of the blade.

A shear blade 11 containing, in the illustrated instance, a plurality of slots 12 and a single shear hole 13, is slidably sandwiched between a bottom piece 14 and one or more top plates 15. In Fig. 1, the top plate (one shown) has a plurality of apertures therein which correspond to the number of pins projecting from the substrate. The number of top plates selected results in elevation of the module a sufficient distance to adjust for the proper length of pin. To permit the greatest possible amount of material in the shear blade the cut or shearing action occurs such that the sheared substrate is oriented at 45 degrees to the direction of shear. The slots 12 in the shear blade permit the blade to be reciprocated by a cam and lever arrangement 16 without effecting a shear of the pins in registration with the slots, while effecting a shear at those apertures 13 registering with the pins.

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