Browse Prior Art Database

High Density Circuit Board Accumulator

IP.com Disclosure Number: IPCOM000037786D
Original Publication Date: 1989-Jul-01
Included in the Prior Art Database: 2005-Jan-30
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Durdik, P: AUTHOR [+3]

Abstract

Disclosed is a system to buffer panels or circuit boards between two processes of different production rates.

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This is the abbreviated version, containing approximately 91% of the total text.

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High Density Circuit Board Accumulator

Disclosed is a system to buffer panels or circuit boards between two processes of different production rates.

This system provides the following improvements to the prior art: a greater storage capacity, up to 200 panels may be enqueued at any one time, independent input and output ports provide simultaneous enqueue dequeue operations, input/output rate independent storage capacity, and tracking of panels or circuit boards by location and age. Greater efficiency is achieved by accessing panels and circuit boards randomly, rather than having each pass through all queue positions. Additionally, this provides configurable operation (first in/first out, last in/first out, etc.).

During operation a circuit board is fed onto the input conveyor from the up- stream process. The gripper on the turntable extends, pulling the circuit board onto the turntable. The turntable then raises or lowers, dependent upon the position of the closest magazine slot, while simultaneously rotating 180 degrees. When the turntable reaches the magazine location, the gripper extends once again, placing the circuit board in the magazine slot.

Retrieval of the circuit board is accomplished by performing the reverse operation at the output side. The turntable located on this side of the accumulator moves to the level of the next circuit board to be retrieved. The gripper extends to grip the panel, pulling it onto the turntable. The turntable then rotates whi...