Composite molding device for stretch blow molding
AssigneeA.K. Technical Laboratory, Inc.
InventorsHideaki Koda, Hisashi Nakajima, Hisao Yamaguchi
Life of this patent
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Abstract
A composite molding device is provided at the same site for preforming a closed-end parison or controlling the temperature of the closed-end parison as well as stretch blow molding the preform or temperature-controlled parison to a final product, such as a bottle. The composite molding device applied for stretch blow molding includes a clamping device, a pair of first mold halves, and a pair of second mold halves. The pair of second mold halves are removably placed between the pair of first mold halves in the clamping device so as to use the clamping device as a common clamping device.
Claims7
A composite molding device for stretch blow molding, said composite molding device comprising:
- a clamping device including a pair of stationary platens, a pair of clamping cylinders, and a pair of movable platens, said pair of stationary platens being interconnected by a plurality of tie bars and arranged upright and in parallel on a base plate, said pair of clamping cylinders being disposed outside said pair of stationary platens for receiving a pair of clamping pistons, respective ends of said clamping pistons running through and being projected inward from the corresponding stationary platens, said pair of movable platens being arranged between said pair of stationary platens and supported by said tie bars to be movable in a predetermined direction, said movable platens being linked with the respective ends of said clamping pistons;
- a pair of first mold halves respectively attached to opposed faces of said movable platens in said clamping device to be movable in said predetermined direction between a mold-opening position and a mold-closing position;
- and
- a pair of second mold halves arranged to move between an advance position, where said pair of second mold halves are placed between said pair of first mold halves in said clamping device, and a retreat position, said pair of second mold halves being pressed against and supported by movable members of an air or hydraulic reciprocating unit to have a parting line identical with a parting line of said pair of first mold halves in said clamping device, said pair of second mold halves being normally pressed to a mold-opening position, when said pair of second mold halves being placed between said pair of first mold halves arranged at said mold-opening position in said clamping device, pressure of said clamping device being transmitted via said pair of first mold halves to said pair of second mold halves so as to close and clamp said pair of second mold halves.
Dependencies are inferred from the claim text.