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Automated, Continuous Duty Dispensing Machine for High Viscosity Fluids

IP.com Disclosure Number: IPCOM000120819D
Original Publication Date: 1991-Jun-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 3 page(s) / 77K

Publishing Venue

IBM

Related People

Grau, PF: AUTHOR [+3]

Abstract

A mechanism is disclosed that continuously dispenses high viscosity fluids for an automated encapsulation assembly line. The tool was designed to apply a precise quantity of thermal conductive paste or grease to the backsides of module caps with tool stoppage only allowed between lot runs.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 75% of the total text.

Automated, Continuous Duty Dispensing Machine for High Viscosity
Fluids

      A mechanism is disclosed that continuously dispenses high
viscosity fluids for an automated encapsulation assembly line.  The
tool was designed to apply a precise quantity of thermal conductive
paste or grease to the backsides of module caps with tool stoppage
only allowed between lot runs.

      The tool utilizes a dispensing head manufactured by Hormec of
Switzerland.  Continuously supplying the grease to the head for a
large operation, one tube is under pressure and being dispensed,
while the other acts as a backup.  When the first tube is emptied,
the system automatically switches over the second tube to allow the
continuous operation.  At the end of a lot, or series of lots,
depending on the volume of grease required per product run, the
operation replaces the empty tubes, and the tool is once again ready
for operation.  A side view of the tool is shown in Fig. 1.

      A unique valve was designed to provide the path for the grease
between the paste tube and the dispense head, as well as to switch
the supply from the first tube to the second. As shown in Fig. 2, the
grease is supplied to the dispense head from grease supply "A" while
in position 1, and from grease supply "B" while in position 2.
Integrating this valve into the manifold of the dispense tool saved a
significant amount of space, keeping the distance between the supply
and the dispense head at a minimum.  The ...