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AssigneeMould & Matic Solutions GmbH
InventorHeinz Klausriegler
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The invention relates to an installation and a method of producing hollow bodies by injection molding and subsequent blow molding. The installation comprises an injection molding tool with at least one cavity for producing a preform with a neck continuation and a hollow body part adjoining the neck continuation, a blow mold for shaping the hollow body from the preform and transfer means for transporting the preform from the injection molding tool to the blow mold. The transfer means comprises a carrying frame in which at least one holding element for the at least one preform is disposed. When transferring the preform from the opened injection molding tool to the transfer means, the preform is held on the outside of its neck continuation by a tool part of the injection molding tool and is thereby removed from the cavity. The preform is then placed with the inside of its neck continuation into the holding element, such that the holding element bears against an inner surface of the neck continuation.
Installation (1) for producing hollow bodies (2) by injection molding and subsequent blow molding, comprising an injection molding tool (4) with a tool part (19), at least one cavity (5) for producing a preform (3) with a neck continuation (18) and a hollow body part (22) adjoining the neck continuation (18), a blow mold (6) for shaping the hollow body (2) from the preform (3) and transfer means (7) for transporting the preform (3) from the injection molding tool (4) to the blow mold (6), wherein the transfer means (7) comprises a carrying frame (9) on which at least one holding element (10) for the at least one preform (3) is disposed and when the preform (3) is being transferred between the opened injection molding tool (4) and the transfer means (7), the preform (3) is held by the outside of its neck continuation (18) by the tool part (19) of the injection molding tool (4) and is removed from the cavity (5), wherein the carrying frame (9) is guided by a guide arrangement formed by transport rails (8), in a straight transport movement between the injection molding tool (4) and the blow mold (6) , the transport rails (8) defining a horizontally oriented transport plane (41), wherein when the preform is being transferred between the opened injection molding tool (4) and the transfer means (7), the direction of movement of the preform (3) is vertical and perpendicular to the transport plane (41), and the preform (3) is placed onto the at least one holding element (10) by the inside of its neck continuation (18) and the at least one holding element (10) thus lies in contact with an internal face (20) of the neck continuation (18), and wherein the at least one holding element (10) has at least one gap in the region of its center forming an orifice (69) for supplying blowing air (68) as well as a stretching tool into an interior of the preform (3), and the neck continuation (18) is held by the at least one holding element (10) during the blowing operation to form the hollow body (2).
Method of producing hollow bodies (2) by injection molding and subsequent blow molding with an installation (1) in which a preform (3) with a neck continuation (18) and a hollow body part (22) adjoining the neck continuation (18) is injected in at least one cavity (5) in an injection molding tool (4) with a tool part (19), after which the injection molding tool (4) is opened and the preform (3) is removed from it, wherein the preform 2 is held by the outside face of its neck continuation (18) by the tool part (19) when the injection molding tool (4) is opened and removed from the cavity (5), and the preform (2) is transported by a transfer means (7) to a blow mold (6), the transfer means (7) comprising a carrying frame (9) on which at least one holding element (10) for the at least one preform (3) is disposed, wherein the carrying frame (9) is guided by a guide arrangement, which is formed by transport rails (8), in a straight transport movement between the injection molding tool (4) and the blow mold (6), the transport rails (8) defining a horizontally oriented transport plane (41), wherein when the preform (3) is being transferred between the opened injection molding tool (4) and the transfer means (7), the direction of movement of the preform (3) is vertical and perpendicular to the transport plane (41) and the preform (3) is placed onto the at least one holding element (10) disposed on the carrying frame (9) of the transfer means (7) by the inside of its neck continuation (18) and the at least one holding element (10) is placed in contact with an internal face (20) of the neck continuation (18), and wherein the at least one holding element (10) is formed with at least one gap in the region of its center which forms an orifice (69) through which blowing air (68) as well as a stretching tool is supplied into an interior of the preform (3), and the neck continuation (18) is held by the at least one holding element (10) during the blowing operation to form the hollow body (2), and the hollow body (2) is formed in the blow mold (6) from the perform (3).
Dependencies are inferred from the claim text.