Closing unit for an injection molding machine with stack mold
AssigneeKrauss-Maffei Kunststofftechnik GmbH
InventorKlaus Wimberger
Life of this patent
Estimating the term…
Abstract
A closing unit for an injection molding machine includes first and second platens, of which at least one is movable, and an intermediate plate disposed between the first and second platens. A molding tool is disposed between one of the first and second platens and the intermediate plate. In order to allow operation of the closing unit with intermediate plate also as a single-face mold for molding a single-component product, the molding operation between the other one of the first and second platens and the intermediate plate is disabled by a dummy tool or by securely fixing the intermediate plate to the other one of the first and second platens. Removal of an end product from the molding tool is realized by at least one ejector which is arranged in or on the intermediate plate.
Claims13
A closing unit for an injection molding machine, comprising:
- first and second platens, at least one of which being movable;
- an intermediate plate disposed between the first and second platens;
- a molding tool disposed between one of the first and second platens and the intermediate plate;
- means adapted for disabling a molding operation between the other one of the first and second platens and the intermediate plate, wherein the means include a dummy tool which is disposed between the other one of the first and second platens and the intermediate plate and in which no product is made;
- and
- at least one ejector arranged in or on the intermediate plate.
A closing unit for an injection molding machine, comprising:
- first and second platens, at least one of which being movable;
- an intermediate plate disposed between the first and second platens;
- a molding tool disposed between one of the first and second platens and the intermediate plate;
- means adapted for disabling a molding operation between the other one of the first and second platens and the intermediate plate;
- at least two ejectors arranged in or on the intermediate plate;
- a single drive commonly operating both ejectors;
- and
- a linkage for interconnecting the drive with the ejectors, with the linkage being constructed so as to render a connection between the drive and one of the ejectors no longer effective.
A system for converting a closing unit for a stack mold to a single-face mold, with the closing unit including first and second platens, of which at least one being movable, an intermediate plate disposed between the first and second platens, said system comprising:
- a molding tool disposed between one of the first and second platens and the intermediate plate;
- a dummy tool which is disposed between the other one of the first and second platens and the intermediate plate and in which no product is made for disabling a molding operation between the other one of the first and second platens and the intermediate plate;
- and
- at least one ejector arranged in or on the intermediate plate for expellingan end product.
Dependencies are inferred from the claim text.