Browse Prior Art Database

Dead Reckoning Locator for SMT Components

IP.com Disclosure Number: IPCOM000120965D
Original Publication Date: 1991-Jun-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 1 page(s) / 46K

Publishing Venue

IBM

Related People

Hernandez, B: AUTHOR [+4]

Abstract

By their very nature surface mount components have no pins to insure correct placement. Vision systems have been designed to facilitate placement; however, both the cost and the significant amount of down time for repair and maintenance have led to a dead reckoning type of tool. (Image Omitted)

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This is the abbreviated version, containing approximately 100% of the total text.

Dead Reckoning Locator for SMT Components

      By their very nature surface mount components have no pins to
insure correct placement. Vision systems have been designed to
facilitate placement; however, both the cost and the significant
amount of down time for repair and maintenance have led to a dead
reckoning type of tool.

                            (Image Omitted)

      The engineering drawing included represents the invention with
a location plate that will locate a 88 J-lead flatpack. To describe
the procedure of locating this J-lead component, it is necessary to
understand that any other shape of component can be placed by simply
changing the location plate to suit that component.

      The vacuum / pickup stage would be held in some known location
in relation to a vacuum-assisted thermode. The location plate would
then be placed on the stage and the vacuum switched on port A to
insure correct location. The component is placed into the nest
created by the location plate and vacuum port B will hold the
component secure until the thermode is in contact with the component.
A two-way valve automatically switches the vacuum from the stage to
the thermode body and the part is now ready for placement.

      Disclosed anonymously.