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Gravity Feed Loader for Turntable

IP.com Disclosure Number: IPCOM000074801D
Original Publication Date: 1971-Jun-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Kostenko, A: AUTHOR [+2]

Abstract

Gravity-feed loading of semiconductor modules is performed into the nests of a testing turntable. To compensate for module dimensional tolerances and motions of the turntable, loading is accomplished using air controls and a predetermined offset of the loader with respect to the nests of the turntable.

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Gravity Feed Loader for Turntable

Gravity-feed loading of semiconductor modules is performed into the nests of a testing turntable. To compensate for module dimensional tolerances and motions of the turntable, loading is accomplished using air controls and a predetermined offset of the loader with respect to the nests of the turntable.

Turntable 1 rotates clockwise in the direction of arrow 2. Nests 3 are provided in the periphery of turntable 1 for retaining modules 4. The modules are loaded into nests 3 at a load station through a loader 5 having a track 6. Track 6 retains a column of modules as it rests in close proximity to turntable 1. As the turntable rotates and a nest comes into position under track 6, a module 4 falls into nest 3 and is sheared off from the remainder of the column.

To assure that a module 4 is loaded into the nest, the center line 7 of the track is slightly offset from the center line 8 of nest 3 by a slight amount as indicated at 9. The offset is in the direction opposite to the direction 2 of turntable motion. A fine stream of air 10 is provided through an air jet 11 to provide downward and side forces 12, 13, respectively. The modules in the column are seated to the back and the side of track 6. Air stream 10 is provided at a particular angle 14 assuring the seating of the module in the track and at the same time the acceleration of the module into nest 3.

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