Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Feed control of material en route to shaping area
Patent
1988-01-22
1989-01-03
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Feed control of material en route to shaping area
137 98, 222134, 222135, 2643286, 422112, 422133, 425543, B29C 4518
Patent
active
047953365
ABSTRACT:
A RIM apparatus has a separate hydraulically actuated monomer dispensing system associated with one of at least two different fluid chemical monomers to be mixed and molded. Each system is connected with a separate hydraulic fluid delivery cylinder (one for each monomer) for receiving hydraulic fluid therefrom and is operable for dispensing the associated monomer to a RIM mixing head and mold at a rate proportional to the rate that said hydraulic fluid is delivered thereto from the connected delivery cylinder. Each delivery cylinder is supported at a preselected position with its axis spaced radially from a reference axis and at least one thereof is bodily adjustable radially with respect to said reference axis and to the axis of another delivery cylinder. Each delivery cylinder discharges hydraulic fluid at a rate proportional to the rate of movement of an associated piston therein. A power driven operator is engaged with each said associated piston for effecting said movement at a rate proportional to the distance between the axis of the associated delivery cxylinder and said reference axis. Valve means enables selective interconnection between the delivery cylinders and dispensing systems in various combinations.
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Savina Michael R.
Shannon David M.
Thumma Ira M.
Chiesa Richard L.
The Dow Chemical Company
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