| 摘要 |
PURPOSE:To reduce the pressing force of a pipe tip so as to prevent the buckling, by inserting the synthetic resin pipe end into a molding space between an inner mold and an outer mold, and extending a horizontal section of a packing mounting groove thereby forming a semi-receptacle. CONSTITUTION:The heated synthetic resin pipe end (P) is forcibly introduced in the molding space (g) between the inner mold 4 and the outer mold 5 that comprise extending secton forming mold parts 4a, 5a retained at 90-100 deg.C and mold parts 4b, 5b retained at 85-90 deg.C, and after the horizontal section 34 of the packing mounting groove is molded into the extended section 340, that is, the semi-receptacle and then the molds are removed. Then using another mold 6 comprising an inner mold 62 and an outer mold 61, the extended section 340 is molded under its remaining heat into a tapered section 35 and an opening section 30. |
