| 摘要 |
PROBLEM TO BE SOLVED: To provide a molding machine for molding a concrete block having a through-hole provided in its side face used in building and civil engineering and having no defect from an aspect of appearance and strength. SOLUTION: A mold box 3 is provided in a machine body 4 and a vibrator 5 is provided at the mold box 3. A core 21 is provided in the mold box 3 so as to be freely inserted, extracted and rotated. In molding the concrete block having the through-hole provided in its side face, the core 21 is rotated in a process for supplying a material (uncured concrete) into the mold box 3. Whereupon, the material in the periphery of the core 21 is sufficiently spread throughout the mold box 3 so as to be dragged downwardly and the clogging of the part just under the core 21 with the material is eliminated. |
