Automated apparatus for molding or die casting

Details Automated apparatus for molding or die casting Automated apparatus for molding or die casting

1977-06-01

1978-06-06

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

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

425121, 425126R, 425129, B29C 600, B29C 700

Patent

active

040934136

ABSTRACT:
The apparatus manufactures, in repetitive cycles, apertured composite articles, such as stators for electric motors, including an apertured prefabricated insert. A machine applies molten molding material about the insert by die-casting or injection molding to constitute the composite. The apparatus includes a plurality of clamping mandrels for clamping in such apertures to constitute temporarily "mandrel-with-insert" or "mandrel-with-composite" combinations, a discharge station for discharge of the composites, a charging station for charging the mandrels with inserts, and a loading system with tongs, constituting holders for holding the mandrels, and with a conveying mechanism for repetitively carrying out a series of operations in appropriate timed sequences. These operations comprise extracting a mandrel-with-composite from the machine by a holder, loading a mandrel-with-insert into the machine from a holder, both these operations taking place at a loading/unloading position for the machine, setting off a composite from a holder at a discharge station, and taking up an insert, with the holder, at a charging station. The apparatus includes a pivoting manipulator including two conjointly pivoted bells, one to receieve an insert and the other to receive a composite. Each mandrel comprises a cylindrical main body having a plurality of grooves disposed symmetrically about its periphery, stepped wedges axially displaceable in each groove, stationary wedges cooperable with the stepped wedges for radial displacement, and a coupling at one end rotatable relative to the main body. The coupling is connected to the stepped wedges in a manner such that, upon rotation of the coupling, the stepped wedges are displaced axially in the respective grooves and the non-rotatable wedges are displaced radially thereby to expand the mandrel for clamping it in the aperture of an insert.

REFERENCES:
patent: 1888613 (1932-11-01), Apple
patent: 2018480 (1935-10-01), Apple
patent: 2030132 (1936-02-01), Apple
patent: 3254372 (1966-06-01), Hofbauer
patent: 3584345 (1971-06-01), Beastrom
patent: 3608622 (1971-09-01), Bachelier
patent: 3663136 (1972-05-01), Westermann
patent: 3762847 (1973-10-01), Deuter et al.
patent: 3849041 (1974-11-01), Knapp

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