Apparatus for cast-product production line

Abstract

To provide an apparatus for cast-product production line that can separate cast product and casting sand without ever using a jumbolized casting-mold disassembling device, and additionally that can intend the downsizing of mold-disassembling unit. An apparatus for cast-product production line has the following jointly: a kneader 94 for kneading casting sand for making mold; a mold maker 3 for making a sand casting mold 2 from the casting sand for making mold, the sand casting mold 2 being provided with a molding cavity 23 for forming a singular cast product or plural products 27 ; a molten-metal pourer 4 for pouring molten metal into said molding cavity 23 of the sand casting mold 2 ; and a mold disassembler 5 for disassembling the sand casting mold 2 having undergone molten-metal pouring. Upon disassembling the sand casting mold 2 by the mold disassembler 5 , the sand casting mold 2 is disassembled in such a state that the cast product 27 is supported by means of a cast-product supporter element 52.

1 . An apparatus for cast-product production line, the apparatus having the following jointly: a kneader for kneading casting sand for making mold; a mold maker for making a sand casting mold of said casting sand for making mold, the sand casting mold being provided with a molding cavity for forming a singular cast product or plural cast products; a molten-metal pourer for pouring molten metal into said molding cavity of said sand casting mold; and a mold disassembler for disassembling said sand casting mold having undergone molten-metal pouring;
 the apparatus for cast-product production line being characterized in that, upon disassembling said sand casting mold by said mold disassembler, it is adapted so that said sand casting mold is disassembled in such a state that at least a portion of said cast product is supported by means of a cast-product supporter element.   
   
   
       2 . In  claim 1 , the apparatus for cast-product production line being characterized in that it is adapted so that:
 (i) said mold disassembler possesses a separator for taking out said cast product from out of said sand casting mold, and additionally for separating the casting sand of said sand casting mold, casting sand to which thermal influence resulting from the molten metal is great relatively, from the casting sand there of, casting sand to which thermal influence resulting from the molten metal is small relatively;   (ii) said kneader is equipped with (ii-a) a first kneader, and (ii-b) a second kneader, the first kneader being for blending and then kneading an additive material for sand with the casting sand, which has been separated by said separator and to which the thermal influence is great relatively, thereby recovering said casting sand, the second kneader being for blending and then kneading the casting sand, which has been kneaded and then recovered by said first kneader, with the casting sand, which has been separated by said separator and to which the thermal influence is small relatively, thereby forming the casting sand for making mold, casting sand which is to be subjected to the mold making by said mold maker;   (iii) when a blending amount of said additive material for sand, additive material which is blended with per unit mass of said casting sand to which the thermal influence is great relatively, is taken as “Wa” and a blending amount of the additive material for sand, additive material which is blended with per unit mass of said casting sand to which the thermal influence is small relatively, is taken as “Wb,” the blending amount “Wa” is set greater than the blending amount “Wb”; and   (iv) said casting sand for making mold, casting sand which has been formed by said second kneader, is conveyed to said mold maker.   
   
   
       3 . In  claim 1 , the apparatus for cast-product production line being characterized in that said mold disassembler is provided with:
 (i) the cast-product supporter element for restraining at least a portion of said cast product, which is buried in said sand casting mold that is after molten-metal pouring, thereby supporting the portion at least;   (ii) a tearer for tearing off an outside part of said sand casting mold, which is after molten-metal pouring and buries said cast product therein, from said cast product partially; and   (iii) a tear-off driving source for moving said tearer in a tearing-off direction.   
   
   
       4 . In  claim 1 , the apparatus for cast-product production line being characterized in that:
 said tearer is provided with a first tearer, and a second tearer, which are capable of moving in a direction of getting away from each other; and   said tear-off driving source is provided with a first tear-off driving source, and a second tear-off driving source, the first tear-off driving source being for moving said first tearer in a direction for tearing off said sand casting mold, the second tear-off driving source being for moving said second tearer in a direction for tearing off said sand casting mold.   
   
   
       5 . In  claim 3 , the apparatus for cast-product production line being characterized in that said cast-product supporter element restrains and thereby supports at least one of sprue port, spure runner, sprue gate and gas-venting portion of said cast product. 
   
   
       6 . In  claim 1 , the apparatus for cast-product production line being characterized in that said mold disassembler has a crack generator to be pressed into said sand casting mold, which is after molten-metal pouring and buries said cast product therein, prior to the disassembling of said sand casting mold, thereby generating crack in said sand casting molding. 
   
   
       7 . In  claim 1 , the apparatus for cast-product production line being characterized in that the mold disassembler starts and/or finishes the mold disassembling of said sand casting mold when a temperature of said cast product is A1 transformation temperature or more. 
   
   
       8 . In  claim 1 , the apparatus for cast-product production line being characterized in that the mold disassembler starts and/or finishes the mold disassembling of said sand casting mold when a temperature of said cast product is less than A1 transformation temperature and 450° C. or more. 
   
   
       9 . In  claim 1 , the apparatus for cast-product production line being characterized in that a shots-projecting device is disposed, the shots-projecting device being for projecting shots onto said cast product, thereby dropping sand down therefrom; and
 said shots-projecting device starts and/or finishes the sand dropping-down operation by means of shots projection when a temperature of said cast product is A1 transformation temperature or more.   
   
   
       10 . In  claim 1 , the apparatus for cast-product production line being characterized in that it further has a melter jointly, the melter being for forming the molten metal by melting a meltable material. 
   
   
       11 . In  claim 1 , the apparatus for cast-product production line being characterized in that it further has a cutter jointly, the cutter being for cut processing said cast product that has been disassembled from said sand casting mold. 
   
   
       12 . In  claim 1 , the apparatus for cast-product production line being characterized in that it further has the following jointly:
 a melter for forming the molten metal by melting a meltable material; and   a cutter for cut processing said cast product that has been disassembled from said sand casting mold.   
   
   
       13 . In  claim 12 , the apparatus for cast-product production line being characterized in that it is equipped with:
 (i) a cutting-resistance detector for detecting cutting resistance at a time of cut processing said cast product by said cutter; and   (ii) an adjustment commander for outputting a command for adjusting at least one of an amount of additive material for molten metal to be added to said meltable material and a type of the additive material for molten metal when abnormality is acknowledged in the cutting resistance being detected by said cutting-resistance detector.   
   
   
       14 . In  claim 11 , the apparatus for cast-product production line being characterized in that it is equipped with:
 (i) a dimensional-accuracy detector for detecting dimensional accuracy of said cast product before cutting and/or after cutting; and   (ii) a casting-mold-strength adjustment commander for outputting a command for adjusting casting-mold strength of said sand casting mold to said mold maker when abnormality is acknowledged in the dimensional accuracy being detected by said dimensional-accuracy detector.   
   
   
       15 . In  claim 1 , the apparatus for cast-product production line being characterized in that it is equipped with:
 (i) a shots-projecting device for projecting shots onto said product, which has been taken out from out of said sand casting mold, thereby dropping sand down therefrom; and   (ii) a shots alteration commander for outputting a command for altering projection time of said shots to be projected and/or projection amount there of to said shotting device depending on properties of said cast product.   
   
   
       16 . In  claim 1 , the apparatus for cast-product production line being characterized in that it is equipped with:
 (i) a cast-product keeper for temporarily keeping said cast product, which has been taken out from out of said sand casting mold; and   (ii) a cast-product cooling device for facilitating cooling of the cast product, which is cooled in said cast-product keeper and which is before cutting.   
   
   
       17 . In  claim 16 , the apparatus for cast-product production line being characterized in that it is equipped with a cast-product cooling adjustment commander for outputting a command for adjusting cooling rate of said cast product before cutting to said cast-product cooling device depending on a kept number and/or temperature of said cast products, which are kept by said cast-product keeper. 
   
   
       18 . In  claim 17 , the apparatus for cast-product production line being characterized in that said cast-product cooling adjustment commander alters texture of metallic structure of said cast products, which are stored by said cast-product keeper, depending on the cooling rate of said cast products.