Removable plate assembly for core machine head
US5318096A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1992 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Nov 27, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C15/24
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A blow head or gassing head of an automatic core machine, which produces sand casting cores in a core box is formed of a downwardly opening box-like frame having a bottom closure plate. The heads may be alternatively used to respectively deposit a sand and binder material or to flow gas into a sand-filled core box cavity positioned beneath the head. The closure plates are provided with openings through which either the sand-binder material may drop from the blow head frame into the core box cavity or through which gas may flow from the gassing head frame into the cavity. The plate is loosely positioned beneath the frame and is clamped tightly upwardly against the bottom peripheral edge of the head by a spaced pair of elongated, rigid rails which engage and support the opposite side edges of the plate. A rail holding a clamping mechanism selectively moves the rails upwardly for clamping the plate against the frame and downwardly to free the plate relative to the frame. The rails are lowered when the openings in the plates become partially or fully obstructed or when different opening patterns are required so that the plate may be slid horizontally from beneath the frame and a substi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.