Browse Prior Art Database

Vacuum Actuated Gripper for Placement of Odd-Form Surface Mount Technology Components

IP.com Disclosure Number: IPCOM000117594D
Original Publication Date: 1996-Apr-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Berry, MW: AUTHOR

Abstract

Disclosed is a tool for picking up surface mount components for automated electronic circuit board assembly. These components do not have a surface which would allow for regular nozzle vacuum pickup. The tool uses vacuum to actuate movement of end effectors which holds the surface mount component by mechanical means.

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This is the abbreviated version, containing approximately 59% of the total text.

Vacuum Actuated Gripper for Placement of Odd-Form Surface Mount Technology
Components

      Disclosed is a tool for picking up surface mount components for
automated electronic circuit board assembly.  These components do not
have a surface which would allow for regular nozzle vacuum pickup.
The tool uses vacuum to actuate movement of end effectors which holds
the surface mount component by mechanical means.

      This tool is made to fit into the flange of the machine's
placement head, in place of a regular vacuum nozzle.  The body
dimensions of the gripper nozzle are, therefore, the appropriate size
to fit into the flange.  The diameter and length of the gripper
nozzle are approximately the same as one of the machine's vacuum
nozzles.

      The body of the tool is hollowed out with a rubber diaphragm
sealing the cavity.  As vacuum is drawn on the device, the diaphragm
deflects upwards.  Attached to the center of the diaphragm is a cone
shaped plunger.  The plunger is cylindrical and smaller at the base
where it is attached to the diaphragm.  The angle of the plunger
matches the angle of two sliders which are in contact on opposite
sides of the plunger.  As the diaphragm deflects upwards along with
the plunger, the two sliders are forced outwards.  The sliders are
held in a track with minimal clearance to prevent twisting.  Attached
to the sliders are the end effectors which are designed to pick up a
particular part.  Since the sliders open outward...