Static molds – Uniting preform with molding material – Split mold clamps and supports preform
Patent
1983-08-16
1985-10-15
Lowe, James
Static molds
Uniting preform with molding material
Split mold clamps and supports preform
249115, 249135, 26427217, 264338, 425121, B29C 604
Patent
active
045469512
ABSTRACT:
The invention relates to a mould for encapsulating parts of elements into a plastic material to manufacture electric components. The mould comprises a number of steel blocks or rods with accurately finished surfaces for clamping them completely tight together in a holder, whereby recesses in said blocks or rods are forming the mould cavity or mould cavities and the sprues. A layer of high hardness, such as a nitride layer, is deposited by means of vapor deposition in vacuum at a high temperature onto at least those surfaces of said blocks or rods determining the mould cavity or mould cavities and the sprues. Furthermore the blocks or rods are concerning their dimensions and/or flexibility and/or structure and/or finishing of the surfaces turned away from the mould cavity embodied such that deformations in the position in which said blocks or rods are clamped into said holder, caused by the depositioning of said layer, are eliminated.
REFERENCES:
patent: 2364746 (1944-12-01), Moule
patent: 3709459 (1973-01-01), Bushrod
patent: 4120930 (1978-10-01), Lemelson
patent: 4368168 (1983-01-01), Slepcevic
Arbo Gereedschapsmakerij B.V.
Lowe James
LandOfFree
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