| 摘要 |
PURPOSE:To efficiently, easily execute the titled molding with a simple apparatus, by blowing the molding sand, after plugging the ensertion hole with the double purpose pin, into the main die to the full, and by reforming the residual excess sand at the blowing port, and then, by blowing the curing gas through the insertion hole for curing the mold. CONSTITUTION:The blowing station 5 is set on the main die 1, and the double purpose pins 8 are inserted into the insertion holes 4 in order to plug the holes 4; at the same time, the molding sand held in the blowing sand box 6 is blown through the blowing port 3 into the molding cavity 2 of the die 1 to the full. Next, the stand 5 is removed away, and the reforming die 10 together with the setting plate 11 are set on the die 1; hereby, the reforming plug 10a of the die 10 is inserted into the blowing port 3 for reforming the residual excess sand at the blowing prot 3; after that, the curing gas is blown from the curing gas blowing device 9 so as to enter through the insertion hole 4 into the molded object 12 which is hereby cured. The setting plate 11 together with the die 10 are removed away, and the station 5 is again set on the die 1 so as to insert the pin 8 into the insertion hole 4, and the lower pattern 1b together with the molded object 12, that is the mold, are parted from the upper die 1a. |
