| 摘要 |
PURPOSE:To make possible molding of a main base plate for domestic and for export with the same molds by replacing a mold for leg parts supporting casters mounted at the leg parts or equivalent of the main base with a mold for the parts fitting the leg parts. CONSTITUTION:For manufacturing a main base for domestic, molds 20 for the leg parts are arranged at the leg parts or equivalents of the main boase 10, mold 22 for fitting the leg parts are arranged in the middle of the main base 10 and the leg parts 16 and the main base 10 are molded in one body by stopping the flow of resin to the molds 22 in a runner 24. For manufacturing a main base for export, the positions of the molds 20 and 22 are replaced with each other molding will be performed by injecting resin from the runner 24 to the mold 20. At a foreign shop nails 18 of the leg parts 16 are inserted into holes 14 of the leg fitting parts 12 to complete the main base by fixing the leg parts 16 to specified portions.
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