Browse Prior Art Database

MLC Green Sheet Handling Device

IP.com Disclosure Number: IPCOM000049156D
Original Publication Date: 1982-May-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Vicari, JC: AUTHOR

Abstract

A multilayer ceramic (MLC) green sheet handling device is provided having the capability of meeting the various requirements associated with handling green sheet product. Such requirements typically involve positive sheet separation, sheet retention on the device, ability to sense, extendability, self-leveling capability, over-travel features and lightness in weight.

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MLC Green Sheet Handling Device

A multilayer ceramic (MLC) green sheet handling device is provided having the capability of meeting the various requirements associated with handling green sheet product. Such requirements typically involve positive sheet separation, sheet retention on the device, ability to sense, extendability, self- leveling capability, over-travel features and lightness in weight.

The arrangement described is capable of reliably separating stacked product green sheets and spacer sheets individually when static, tackiness Bernoulli effect and adhesion are present. In this regard, consistent separation is achieved by the use of the plunger arrangements shown in Figs. 1 and 2. As shown in Fig. 1, MLC green sheet product 1 is positively picked up and retained by strategically located suction cups 3 and 5, which have high flexibility and are able to conform to irregular surfaces. Plunger 7 comprises metal bellows which have long life and utilize a built-in spring return. As shown, plunger 7 acts to hold spacer sheet 9 in place, the plunger tip having a high frictional material, such as rubber, attached to its ends to reduce sheet slippage. The plunger arrangement exhibits long life and operates with a minimum of moving parts, providing simplicity and contamination control.

Fig. 2 shows an arrangement akin to that shown in Fig. 1 wherein plunger 11 acts to hold in place green sheet 13 so as to accommodate the lifting of spacer 9 by suction cups 3 and...