| 摘要 |
PURPOSE:To certeinly insert a nut in a synthetic resin member at any angle and to facilitate the detachment of a molded body by setting a core assembly to the recessed part of a lower mold and filling the cavity of both registered molds with an uncured synthetic resin under pressure to surround the circumference of the nut and curing said resin to perform demolding. CONSTITUTION:A nut 2 is set to the surface of a core 1 and threaded with the bolt 3 protruding from the rear of the core 1 through a hole 13 to be fixed thereto and the head opening 21 of the nut 2 is sealed by a silicone cap 4. A core assembly M is set to the recessed part 51 of a lower mold 5 but the recessed part 51 is formed into an inverted trapezoidal cross-sectional shape and a semispherical recessed part 61 is formed to an upper mold 6 corresponding to the head of the nut 2. Then, the lower and upper molds 5, 6 are registered to perform the compression molding of an uncured resin W. The resin flows to the periphery of the nut 2 on both sides thereof and the resin stream from above is sent to the part easy to generate a short-circuit or welding behind the nut. After the resin is cured, a molded product 7 is removed along with the core assembly M and a protruding part 71 is ground by a grinder and the silicone cap 4 is detached. |
