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Browse Prior Art Database

Epoxy Dispenser (Positive Volume)

IP.com Disclosure Number: IPCOM000041288D
Original Publication Date: 1984-Jan-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Corso, R: AUTHOR [+2]

Abstract

Disclosed is a four-position epoxy dispenser (Figs. 1 and 2) utilizing rotary valves 1 and a detachable reservoir tank 2. The tank assembly is fully gasketed and 0-ring sealed to the valve housing 8. The reservoir feed 9 can be shut off prior to the tank removal from the valve housing 10. The two rotary valves 1 are connected to a driver assembly 3 which controls the epoxy feed from the reservoir tank 2, into a horizontal chamber 6, and then out through the needle plate assembly 4. The epoxy volume is metered by adjusting the spring-loaded pistons 5 into or out of the horizontal chamber 6. 0-rings 8 on the valve assembly control lateral leakage. A close tolerance between valve and housing prevents leakage around the valve, and down through the needle plate.

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Epoxy Dispenser (Positive Volume)

Disclosed is a four-position epoxy dispenser (Figs. 1 and 2) utilizing rotary valves 1 and a detachable reservoir tank 2. The tank assembly is fully gasketed and 0-ring sealed to the valve housing 8. The reservoir feed 9 can be shut off prior to the tank removal from the valve housing 10. The two rotary valves 1 are connected to a driver assembly 3 which controls the epoxy feed from the reservoir tank 2, into a horizontal chamber 6, and then out through the needle plate assembly 4. The epoxy volume is metered by adjusting the spring-loaded pistons 5 into or out of the horizontal chamber 6. 0-rings 8 on the valve assembly control lateral leakage. A close tolerance between valve and housing prevents leakage around the valve, and down through the needle plate. The complete dispense assembly is mounted on an X-Y plate (not shown), and two pancake air cylinders (not shown) provide Z motion, if required. A controlled volume is provided by the dispenser. The epoxy is deposited on an article of manufacture 7, such as a semiconductor device or semiconductor device packaging structures.

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