Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...
Patent
1994-04-13
1995-12-26
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Positioning of a mold part to form a cavity or controlling...
264 406, 264 407, 264118, 264141, 2641761, 26421110, 26421111, 26421121, 425144, 425145, 425202, 425203, 425311, 425313, 4253823, 4253824, 426516, B29C 4792
Patent
active
054785111
ABSTRACT:
A method and apparatus in the context of a rotating conveying screw situated within a cylindrical housing which has an inlet port on one end of the cylinder and a discharge opening on the other end of the cylinder. A resistance plate is mounted transversely to the conveying screw near the discharge opening for corotation with the screw. The plate is mounted to define a discharge gap between the opening and the plate. A sleeve on the housing is employed to adjust the size of the gap between the plate and the opening. A process controller positions the sleeve by means of a pair of screw jacks. The controller adjusts the discharge gap width to maintain feed material temperature within a predetermined band. Alternatively the controller adjusts the discharge gap width and feed screw speed to maintain a predetermined specific energy input into the feed material. The helical screw is preferably supported at both ends by a bearing means. Breaker bars are mounted on the transverse plate and extend over the gap between the discharge opening and the plate. Breaker bars may also be mounted to the cylindrical sleeve and extend over the gap between the sleeve and the plate.
REFERENCES:
patent: 2994105 (1961-08-01), Seal et al.
patent: 3034421 (1962-05-01), Pence
patent: 3137035 (1964-06-01), Hendry
patent: 3382538 (1968-05-01), Burner
patent: 3420160 (1969-01-01), Mast
patent: 3533801 (1970-10-01), Wenger
patent: 4097213 (1978-06-01), McComb et al.
patent: 4171668 (1979-10-01), Ratcliffe
patent: 4751030 (1988-06-01), Volk
patent: 5149555 (1992-09-01), Flindall
patent: 5338559 (1994-08-01), Schaaf
patent: 5366680 (1994-11-01), Foresman
International Search Report for International Application No. PCT/US94/04748 (Sep. 5, 1994).
Andritz Sprout-Bauer, Inc.
Thurlow Jeffery R.
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