Abrading – Machine – Sandblast
Patent
1997-06-02
1999-03-09
Scherbel, David A.
Abrading
Machine
Sandblast
451 75, B24C 326
Patent
active
058792236
ABSTRACT:
A cryogen deflashing apparatus for removing residual flash from molded articles includes a receptacle assembly forming a sealed treatment chamber for the molded articles and a throwing wheel assembly for propelling particulate media against the molded articles. The throwing wheel assembly including a vaned impeller, an adjustable scroll housing, and an adjustable directional foil housing. The scroll housing partially encircles the impeller and has a surface shaped in the form of a volute. The impeller cooperates with the scroll housing to operate as a suction blower for evacuating cryogen gas and particulate media from a supply conduit. The directional foil housing forms an outlet of the throwing wheel assembly and directs cryogen gas and particulate media, accelerated by the impeller, directly toward the molded articles. The directional foil housing is angularly adjustable to longitudinally adjust impact of the particulate matter and includes vanes which laterally direct split streams of particulate matter to different locations within the receptacle assembly. The scroll and directional foil housings are particularly well suited for retrofitting existing cryogen deflashing machines.
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Frederick William R.
Hansen James J.
AGA AB
Banks Derris H.
Scherbel David A.
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