Browse Prior Art Database

Rotary Pick-Up Device

IP.com Disclosure Number: IPCOM000099909D
Original Publication Date: 1990-Feb-01
Included in the Prior Art Database: 2005-Mar-15
Document File: 2 page(s) / 70K

Publishing Venue

IBM

Related People

Dinus, D: AUTHOR [+6]

Abstract

A technique is described whereby a rotary pick-up device, when attached to a robot Z-axis, provides rapid movement of integrated circuit green-sheet patterns, so as to increase inspection of green- sheets and associated parts. However, the concept does not limit the use to green-sheet applications, but can be implemented to similar products requiring rapid and controlled movement.

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Rotary Pick-Up Device

       A technique is described whereby a rotary pick-up device,
when attached to a robot Z-axis, provides rapid movement of
integrated circuit green-sheet patterns, so as to increase inspection
of green- sheets and associated parts.  However, the concept does not
limit the use to green-sheet applications, but can be implemented to
similar products requiring rapid and controlled movement.

      The rotary pick-up device, as shown in Fig. 1 (front view),
Fig.  2 (side view) and Fig. 3 (top view), consists of six primary
units:  input pick-up head 10, output pick-up head 11, rotary
actuator 12, fork 13, gripper 14 and control electronics unit 15.

      When the rotary pick-up device is attached to the robot Z-axis,
air and vacuum is supplied at inlets 16 and 17 so as to actuate the
moving mechanisms of the device. Green-sheets are typically
positioned onto a tray prior to inspection.  To pick-up a tray, fork
13, controlled by cylinder 18, must be in the down position.  Two
sensors 19 sense the position of fork 13 and sensors 20 detect the
position of gripper 14. Gripper 14 is controlled by cylinder 21.  To
pick-up a tray, gripper 14 closes to grasp the tray when sensor 22
detects the presence of the tray.  Buffers 23 are used to secure the
tray for transport.  To place the tray in position for inspection
purposes, gripper 14 opens to unload the tray.  Fork 13 returns to
the upper position when sensor 22 no longer detects the prese...