Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With coupling between charger and mold
Reexamination Certificate
2005-02-08
2005-02-08
Mackey, James P. (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With coupling between charger and mold
C425S573000, C425S588000
Reexamination Certificate
active
06851946
ABSTRACT:
A hot runner manifold system for an injection mould for simultaneous injection moulding of several parts or of large parts, having a multiplicity of injection orifices (24). The orifices are designed for delivering injection moulding compound substantially simultaneously under high pressure and at high temperatures into specified mould zones. The mould zones are provided at least partially on main manifolds (11, 12, 13, 14) that are separated from one another, which main manifolds have hot runners (17, 19, 21, 23) and are connected via at least one pre-manifold (2). The pre-manifold has hot runners (4, 7), and is connected to a sprue (1) for receipt of the injection moulding compound. At least one part of pre-manifold (2) is arranged between adjacent main manifolds (11, 12, 13, 14), with the hot runners (7, 17) of the pre-manifold (2) and of the main manifolds (11, 12, 13, 14) opening through lateral surfaces of pre-manifold (15) and a main manifold (25) that face one another and are in contact with one another, with the main manifolds (11, 12, 13, 14) and pre-manifolds (2) pressed together firmly and tightly at the lateral surfaces by lateral spring elements (6). The spring elements (6) permit a limited movement of the main manifolds (11, 12, 13, 14) by overcoming the force of a spring element (6). Desirably at least two separate main manifolds are provided which are arranged on opposite long sides of an oblong pre-manifold (2).
REFERENCES:
patent: 3812228 (1974-05-01), Skoroszewski
patent: 5705202 (1998-01-01), Gellert
patent: 5707664 (1998-01-01), Mak
patent: 3501840 (1986-07-01), None
Plass Werner
Ruf Stefan
Dunn Michael L.
Heckenberg Donald
Mackey James P.
MHT Mold & Hotrunner Technology AG
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