Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Article ejector or stripper control
Patent
1978-01-18
1979-06-19
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Article ejector or stripper control
425443, 264245, 264333, B28B 1304
Patent
active
041585330
ABSTRACT:
The apparatus produces pressed cement tiles by forming and pressing the tiles in molds and stripping the pressed tiles from the molds. The stripped tiles are deposited, in superimposed relation, on a stripping tray or "shovel" and the thus-supported tiles are subjected to subsequent treatments. A rotary table or platform carries several molds which are cyclically moved through several stages to form and press the tiles, and the tile receiving tray is positioned at a discharge station to have several pressed tiles stripped from the molds and superimposed in a pile on the tray. Alternatively, an intermediate tray is reciprocable radially between a first position, beneath the stripping element, to receive a pressed tile, and a second position retracted from the rotary platform. With this arrangement, a linearly and vertically reciprocable suction arrangement picks up each pressed tile, thus removed from a mold on the rotary platform, and transports it to a tile receiving tray with successive tiles being superimposed in the pile on the tile receiving tray. This tray is mounted for transport through the subsequent treatment stages with the pile of tiles thereon. In another embodiment, a plurality of trays are movable along guideways and, as each tray is aligned with the discharge station of the rotary platform, it is supported on a bracket which is reciprocable radially relative to the rotary platform. As each formed and pressed tile reaches the discharge station, the frame of the mold, carrying the formed tile, is raised and the receiving tray is moved radially in between the frame of the mold and the base of the mold to receive the stripped tile and then it is retracted. This operation is repeated, for each tile-receiving tray, until a predetermined number of stripped tiles has been superimposed on the tile-receiving tray, after which the tray is retracted and moved along the guideways to further tile processing stations.
REFERENCES:
patent: 2562541 (1951-07-01), Flam
patent: 3270113 (1966-08-01), Longinotti
patent: 3277522 (1966-10-01), Strauss
patent: 3804568 (1974-04-01), Rees
patent: 3904723 (1975-09-01), Prince
patent: 4005973 (1977-02-01), Balhorn
Flint, Jr. J. Howard
Longinotti S.p.A.
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