Molding machine with proportional dispensing

Details Molding machine with proportional dispensing Molding machine with proportional dispensing

1977-01-06

1979-01-02

Jenkins, Robert W.

Agitating

Having specified feed means

Predetermined mixing ratio

366138, 366184, B01F 1504

Patent

active

041324838

ABSTRACT:
A molding machine for dispensing at least two materials which, when combined, foam and cure within a mold thereby to form a plastic article. The dispensing is accomplished by displacing measured amounts of hydraulic fluid to a pair of chambers within each of which there is located a stainless steel bellows that is supplied with the respective material from a source thereof under pressure. When the displaced hydraulic fluid causes the bellows to collapse, the materials in the bellows are displaced therefrom into a mixing chamber in the form of high velocity jets and are mixed therein and the mixture is forced from the mixing chamber to the mold cavity to be filled. The bellows are then permitted to expand under the pressure of the material supplied thereto and the machine is ready for a further molding cycle.

REFERENCES:
patent: 2945507 (1960-07-01), Neuhaus
patent: 2946488 (1960-07-01), Kraft
patent: 3134508 (1964-05-01), Bayer
patent: 3175576 (1965-03-01), Hollings
patent: 3554226 (1971-01-01), Robbins
patent: 3627275 (1971-12-01), Gusmer
patent: 3709468 (1973-01-01), Ives
patent: 3858852 (1975-01-01), Breer

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