Apparatus for removing cylindrical moldings from molds

Details Apparatus for removing cylindrical moldings from molds Apparatus for removing cylindrical moldings from molds

1991-07-16

1993-03-23

Hoag, Willard

Plastic article or earthenware shaping or treating: apparatus

With means applying coating material to work or work contact...

425 99, 425100, 425407, 425437, 425547, B29C 3936, B29C 4302, B29C 4350

Patent

active

051962080

ABSTRACT:
A mold removing apparatus for removing a mold from a cylindrical molding sticking to the external circumferential surface of a mold, the mold being hollow, having center bores at the center of both the top and the bottom thereof, and having a plurality of small through holes in the circumferential wall thereof. The apparatus further includes a mold lifting apparatus which has, in the forefront, positioning pieces which are insertable into the respective center bores of the mold, and holds the mold between the top and the bottom to raise the mold to the specified elevations, a pressurized fluid inlet port which is provided in the positioning piece to introduce a pressurized fluid into the cavity of the mold, a mold removing stage wherein a plurality of teeth are arranged to move towards or away from the outer circumferential surface of the mold, the teeth being capable of contacting or closing to the outer circumferential surface of the mold to engage the lower end face of the molding, a lifting mechanism for lifting or lowering the mold removing stage in the axial direction of the mold, and a mold transferring machine for delivering the mold to and discharging the mold from the mold lifting apparatus.

REFERENCES:
patent: 2361026 (1944-10-01), Greene
patent: 2647295 (1953-08-01), Gould
patent: 2860374 (1958-11-01), Harrison et al.
patent: 3214506 (1965-10-01), Corbin
patent: 3273216 (1966-09-01), Gourlie
patent: 4233006 (1980-11-01), Panas
patent: 4531902 (1985-07-01), Stuhldreher et al.
patent: 4836762 (1989-06-01), Davis
patent: 5129810 (1992-07-01), Nakagi

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