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Greensheet Flipper System

IP.com Disclosure Number: IPCOM000051378D
Original Publication Date: 1981-Jan-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

DeRobertis, IJ: AUTHOR

Abstract

A greensheet flipper system is provided to optimize handling and reduce contamination and damage to screened ceramic green layers, thereby increasing production and yield. The system comprises a self-contained mechanism for automatically reversing single or multiple layers of greensheet and transferring the reversed layers to a confined container ready for the next process step. The screened ceramic layers of greensheet are held flat and rigid throughout the reversing cycle, eliminating smearing of screened patterns. Transfer into the confined container is achieved in a smooth, parallel motion.

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Greensheet Flipper System

A greensheet flipper system is provided to optimize handling and reduce contamination and damage to screened ceramic green layers, thereby increasing production and yield. The system comprises a self-contained mechanism for automatically reversing single or multiple layers of greensheet and transferring the reversed layers to a confined container ready for the next process step. The screened ceramic layers of greensheet are held flat and rigid throughout the reversing cycle, eliminating smearing of screened patterns. Transfer into the confined container is achieved in a smooth, parallel motion.

Fig. 1 shows confined containers 1 and 2, external to flipper system 3. Flipper system 3 comprises a pair of plates 5 and 7 coupled together via sliders 9 and 11, with plate 7 movable on the sliders in response to driver 13 being energized. When containers 1 and 2 are in place, elevator 15 descends in response to energization of driver 17, whereby pins 19 and 21 engage the greensheets. As shown, lower confined container 1 is stacked with several greensheets 23 and, after being stacked, is positioned between plates 5 and 7 and held in position by guard rails 25 and 27.

After containers 1 and 2 have been positioned between plates 5 and 7, driver 13 causes plate 7 to move upwardly, as shown in Fig. 2. Simultaneously, elevator 15 descends to cause pins 19 and 21 to make contact with the greensheets at points where no patterns have been deposited. When...