| 摘要 |
PURPOSE:To rationalize the use of a casting flask for forming mold and to prevent the wasteful use of molding sand by providing a flask changer between a mold forming machine in a circulation mold forming line and a pool line for additional casting flask in a casting factory. CONSTITUTION:A circulation mold forming line 1 in a casting factory is constituted of a mold forming line 2, a charging line 4, a cooling line 6 for casting mold used for casting, knockout device 14, an empty flask separator 16, etc. A pool line 18 for addtional casting flask is provided in the midway thereof and a flask changer 19 us added between said line and the mold forming machine 8 in the mold forming line. A large flask as in the prior art is not used for the casting flask for forming the casting mold. If a casting is small in size, a casting mold is formed with a set of casting flask and a molten metal is cast in said mold in the line 4. If the casting is large in size, height is not enough with a set of the flask and therefore additional casting flasks 22, 23 are connected respectively to a set of upper and lower casting flasks 20, 22 by the changer 19 to form a set of the upper and loer casting flasks, by which the casting mold is formed. The use of a large amt. of molding sand which is not necessary in the stage of producing the small-sized casting is obviated. |
