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
1978-06-26
1980-02-26
Flint, Jr., J. Howard
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
425397, 425398, 425DIG48, B29C 1700
Patent
active
041904087
ABSTRACT:
Apparatus for automatically loading and unloading a press having vertically movable die halves comprises a frame positioned adjacent the press, a movable carriage mounted in the frame for longitudinal movement toward and away from the press, and a blank holding table mounted in the movable carriage for rotation about a horizontal axis, with a gripping mechanism for holding blanks being mounted on one side of the table and a nesting device for holding finished products being mounted on the other side of the table. The gripping mechanism holds blanks in a position that duplicates the charge placement pattern in the mold. The apparatus is operated by a control mechanism such that after blanks are placed in the gripping mechanism, the gripping mechanism is actuated to hold them to the table and the table is turned upside down. The table is then extended to a position between the separated halves of the die, and the gripping mechanism is released, causing the blanks to be transferred to the lower mold cavity. At the same time finished products are ejected from the upper die half and dropped down onto the nesting device. The table is then retracted from the press so that the finished products can be removed and the table can be turned right side up and reloaded for a subsequent cycle.
REFERENCES:
patent: 2777184 (1957-01-01), Monk et al.
patent: 2831213 (1958-04-01), Klarmann et al.
patent: 3914103 (1975-10-01), Dean et al.
patent: 3981669 (1976-09-01), Gambill et al.
patent: 4015872 (1977-04-01), Toznok et al.
patent: 4088718 (1978-05-01), Mulvany
patent: 4150930 (1979-04-01), Asano
Bronkema James W.
Hoeksema Norman L.
Flint, Jr. J. Howard
Unique Tool & Die Co.
Waters John A.
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