| 摘要 |
PROBLEM TO BE SOLVED: To easily set injection pressure reconciling the prevention of deformation in a gate part at the time of injection of a resin and the ensurance of the filling property of a secondary resin when the internal passage of the matching part of split bodies is filled with a molten resin to bond both split bodies. SOLUTION: A mold for producing a tubular member made of a synthetic resin is constituted so that the internal passage provided along the peripheral edge of the matching part of split bodies WU, WL is filled with a molten resin and the split bodies are mutually bonded to produce a tubular member. The tubular member is opened at its tube end part Wo and the above-mentioned mold is equipped with a fixed rotor receiving the respective split bodies and capable of being opened and closed in the matching direction of both of them, a movable mold and a slide core part 33 sliding within the plane crossing the matching direction at a right angle and capable of being inserted into the pipe end part of the split bodies in a matched state by a predetermined length and a gate part GP is provided in the region corresponding to the insertion part in the max. insertion state into the pipe end part of a core part 33a. |
