Apparatus for closing a mold
AssigneeBoschman Technologies B.V.
InventorsJosephus J. M. Schraven, Marinus B. J. de Kruijff
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Abstract
A method of closing a mold and a press therefore, whereby a first mold part is moved towards a second mold part by a first relatively large displacement via a mechanical non-fluid drive. The mold parts are then pressed against one another by a fluid system including a pneumatically driven hydraulic system to provide relative high mold pressures. Drive and follower pins are selectively coupled to the hydraulic system by a carousel for selectively coupling a mold part to the hydraulic system during the pressing portion of the cycle. The method and press are particularly suitable for encapsulating electrical components.
Claims18
A mold press comprising:
- first and second mold parts moveable relative to one another parallel to a central axis for forming a mold cavity and for receiving a solidifiable liquid in said cavity;
- fluid operated displacement means;
- and
- mechanical non-fluid operated drive means for displacing the first mold part parallel to said axis including a plurality of follower pins, said follower pins having centerlines extending parallel to said axis, said follower pins cooperating with the first mold part, and further including a plurality of drive pins coupled to the follower pins and responsive to the fluid operated displacement means for actuating said follower pins selectively, said drive pins being collectively rotatable about the central axis for alignment of the centerlines of the follower and drive pins.
A mold apparatus comprising:
- mechanical non-fluid operated drive means for displacing a first mold part toward a second mold part in a first primary displacement range parallel to a given axis, at least one of said mold parts being tiltable about an axis transverse said given axis;
- and
- fluid operated means for pressing the first mold part against the second mold part in a second displacement range adjoining the first range in a secondary displacement range parallel to said axis via a pressurized fluid to form a mold cavity via said mold parts, wherein the fluid operated means includes a plurality of follower pins and a like array of drive pins coupled to the follower pins, said fluid operated means further including hydraulic means selectively coupled to the drive pins for displacing the drive pins and means for coupling the follower pins to said first mold part.
Dependencies are inferred from the claim text.