Method for Feeding Dual Length Pins
Original Publication Date: 1988-Sep-01
Included in the Prior Art Database: 2005-Feb-15
Ceramic substrate modules that are to be attached to a card are held in the desired position above the card by the use of a standoff. With the introduction of smaller input/output (I/O) pins, a standoff design to accommodate the reduced amount of pin material available is accomplished by bending the four corner pins to create a bent pin standoff. One method of accomplishing this is to feed only long pins into a pinning machine which assembles the substrate, bending the corner pins for the standoff and then shearing the remaining long pins to the desired length. With a described dual length pin feed fixture, this shear operation is eliminated. A described shuttle shifting mechanism for the pinning machine allows more than one pin length to be fed into a part to be pinned.