Apparatus for casting lead into plastic for side terminal batteries
An apparatus for injecting molten lead from a reservoir into a die mold cavity formed about an aperture in the wall of a plastic battery for casting lead-alloy battery terminal connectors is described. Batteries are positioned adjacent the molten lead reservoir of the apparatus and mold portions move together to hold the battery containers in a clamp-like action. molten lead is die cast under pressure into the mold cavity in which a stainless steel threaded nut is positioned. The lead is forced through a heated chamber into a portion of the mold that may be water cooled. The mold is designed to allow venting of gases to eliminate porosity; and the apparatus is designed to provide casting that is free of jagged projections in the sprue hole. The aperture in the battery wall is surrounded by a series of plastic annular rings extending outward from the battery wall but being a part of it. The molten lead surrounds the annular rings and fills the spaces between them when it is injected into the cavity. The heat from the molten lead partially melts the plastc rings and thus forms a good seal between the casting and the battery wall.
- Assignee:
- General Battery Corp.
- Patent Number(s):
- US 4158382
- OSTI ID:
- 5526200
- Resource Relation:
- Patent File Date: Filed date 23 Dec 1976
- Country of Publication:
- United States
- Language:
- English
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