Browse Prior Art Database

Pin Feed Accelerator

IP.com Disclosure Number: IPCOM000101745D
Original Publication Date: 1990-Aug-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Hunter, AW: AUTHOR [+3]

Abstract

Disclosed is a mechanism to reduce the time required to move pins from a scanning pin load module into a shuttle that contains a full substrate hole matrix.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Pin Feed Accelerator

       Disclosed is a mechanism to reduce the time required to
move pins from a scanning pin load module into a shuttle that
contains a full substrate hole matrix.

      Pins fed from a vibratory feeder proceed down through a row of
tubes into a moving scanner.  The tubes in the scanner align with the
rows of holes in the shuttle.  Pins are dropped into the shuttle
holes as the scanner passes over them.  One pass of the scanner fills
a complete pin matrix.

      The accelerator reduces the pin transition time from the
scanner to shuttle, preventing bending and shearing of pins.  This is
accomplished with air pressure from the manifold into a receiver,
down through eight holes that surround and converge inward at the
venturi.  The first pin is accelerated into the shuttle hole, and the
backup pins are pulled forward by the venturi, insuring pins are
always in proper position for shuttle entry.

      A splined hole is required in the shuttle to allow for an
uninterrupted air flow.  This eliminates the hydraulic reaction that
occurs from forcing air into a blind hole.

      Holes in the drop gate that are misaligned with the holes in
the shuttle hold the complete pin matrix until a receiving die moves
under to accept the pins.  When the die is in position the shuttle is
shifted to align the pins with the holes in the drop gate and allows
all pins to load into the die.