Apparatus for production of casting moulds |
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| 申请号 | US3697207D | 申请日 | 1971-02-18 | 公开(公告)号 | US3697207A | 公开(公告)日 | 1972-10-10 |
| 申请人 | KARLSTAD MEKANISKA AB; | 发明人 | ORDQVST OLOF ALBERT; | ||||
| 摘要 | Apparatus for making inner and outer casting mould parts of settable mould material and shaped for forming elongated castings having substantially congruent transverse cross-sections along their lengths comprises a stationary outer shell that serves as a form for the outer wall of the outer mould part and has a length exceeding the length of the casting. An annular pattern shaped in cross-section to conform to the cross-sectional shape of the casting and an inner shell that serves as a form for the inner wall of the inner mould part, both of which are of a length substantially less than the length of the casting, are mounted for movement axially of the outer shell such that the pattern and inner shell can be positioned successively at different positions along the length of the outer shell to enable the mould parts to be made in a series of sequential stages section by section. | ||||||
| 权利要求 | 1. Apparatus for making inner and outer casting mould parts of a settable mould material and shaped for forming elongated hollow castings having substantially congruent transverse cross-sections along their lengths comprising a stationary outer shell having an inner surface defining a form for the outer wall of the outer mould part and having a length exceeding the length of the casting, an annular pattern shaped and dimensioned in transverse cross-section substantially to conform to the cross-sectional shape and dimensions of the casting and having a length substantially less than the length of the casting; an inner shell having an outer surface defining a form for the inner wall of the inner mould part and having a length substantially less than the length of the casting, and means mounting the pattern and the inner shell within the outer shell in spaced relation for movement axially of the outer shell, whereby the pattern and inner shell are adapted to be positioned successively at different positions to enable the mould parts to be made in sections of lengths substantially less than the total lengths thereof. 2. Apparatus according to claim 1 wherein the outer shell, pattern and inner shell are mounted with their axes disposed vertically. 3. Apparatus according to claim 2 wherein the mounting means includes a vertical supporting column having a length greater than the length of the casting and mounted within the outer shell, and a structure supported by the column for vertical movement thereon and carrying the pattern and the inner shell in depending relation. 4. Apparatus according to claim 3 wherein the mounting means further includes means connected to the outer shell and to the column for positioning the column relative to the shell. 5. Apparatus according to claim 3 wherein the structure is mounted on the column for upward movement only, the mounting means including means for supporting the structure on the column against downward movement, whereby the structure is supported on the column at a position once it has been moved up from another position below such position. |
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