Mold forming apparatus with mold flask bracer means
OwnerErwin Buhrerinventor
Life of this patent
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Abstract
In mold forming apparatus wherein molding sand contained in a mold flask is subjected to compressive forces, bracer devices acting in opposed relationship against the mold flasks are provided in order to supprt the sides of the flasks against the forces generated therein during compression of the molding sand. The bracer devices act against structural parts of the molding apparatus or machine which are located to be fixed in position relative to the mold flasks during the compression of the sand and the bracer devices are arranged to consist of bracer bolts which are adapted to be brought into engagement against the sides of the mold flasks by wedge devices sliding relative to the fixed structural parts and actuated preferably by fluid pressure means.
Claims11
In a mold forming apparatus for the production of casting molds in molding flasks operating to compress mold forming material contained within said mold flask, the improvement comprising bracer means including bracer elements acting in opposed relationship to each other to brace said mold flask and structural means located to be fixed in position relative to said mold flasks during compression of said mold forming material, said bracer means operating to brace said mold flasks against said fixed structural means, said bracer elements comprising bracer bolts arranged to be adjusted with relation to said mold flasks, said apparatus further comprising wedges which are mounted in slidable engagement relative to said fixed structural means in order to thereby operate to adjust the position of said bracer bolts against said mold flasks.
In mold forming apparatus for the production of casting molds in molding flasks including a mold table for supporting said mold flasks and means operating to compress mold forming material contained within said mold flasks while said flasks are supported on said mold table, the improvement comprising bracer means including individual bracer elements located externally of said flasks and acting thereagainst in opposed relationship to each other to apply to said flasks forces to brace and support the walls of said mold flasks against forces generated therein as a result of compression within said mold flasks of said mold forming material by operation of said compressing means during said mold forming operations, said bracer elements thereby operating to resist deformation of said flask walls resulting from said compression therein of said mold material, and structural means including upstanding frame means supporting said bracer elements and having said bracer elements arranged in operative relationship therewith for movement into and out of an advanced position in which said bracer elements contact the walls of said mold flasks, said frame means being located to be fixed in position relative to said mold flasks during compression of said molding material, said bracer means further including actuating means for said bracer elements and locking means cooperating with said bracer elements in said advanced position for maintaining said position independently of the compression forces developed in said mold flasks, said bracer elements operating to brace said mold flasks against said fixed frame of said structural means.
Dependencies are inferred from the claim text.