Rotary molder

Details Rotary molder Rotary molder

1975-11-07

1976-11-23

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

425127, 425246, 425247, 425348S, 425444, 425DIG47, B29H 910

Patent

active

039937879

ABSTRACT:
A molding machine for producing products of a rubber-like resilient material, particularly oil seals in which a first mold part is stationarily supported in axial spaced relation to a main base, a base between the main base and first mold part is axially movable toward and away from the first mold part and supports a second complementary mold part, a holder between and axially spaced from the first and second mold parts is mounted for limited axial movement and rotary movement in a plane parallel to the first and second mold parts, with the holder carrying two diametrically opposite further mold parts spaced apart an equal distance from the axis of the rotary movement and one of the further mold parts being in substantially registry with the first and second mold parts so that movement of the base relative to the holder brings the second mold part into operative relation to the one further mold part and continued movement of the movable base moves the holder toward the first mold part until the first mold part, one further mold part and second mold part are assembled to provide a molding space therein for receiving the molding material. Means are provided for introducing a reinforcing ring into the other further mold part of the holder prior to its movement to the position occupied by the one further mold part during molding and to remove the completed article from the one further mold part when it occupies the position of the other further mold part during molding. In addition, means are provided for removing the molding flash after the mold opening and for transporting the flash to discharge means. Also, means are employed to retain the two further mold parts at diametrically opposite points in the holder as well as prevent rotation and tilting of such mold parts relative to the holder.

REFERENCES:
patent: 3337920 (1967-08-01), Jagger et al.
patent: 3621533 (1971-11-01), Bertrandi
patent: 3754846 (1973-08-01), Choate
patent: 3841809 (1974-10-01), Tucker
patent: 3936257 (1976-02-01), Christiansen

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