| 摘要 |
PROBLEM TO BE SOLVED: To adopt a blowing mold of an alligator opening type, to raise a drag force to an external force which opens a movable cavity mold, and thereby to improve the quality of a molded product. SOLUTION: A movable cavity mold 210 is driven for opening and closing with a fixed horizontal axis as a first fulcrum point O1 with respect to a fixed cavity mold 200 having a perpendicular parting surface 201. A mold opening and closing drive mechanism 220 which carries out the opening and closing drive of the movable cavity mold includes: a first rink 222 in which a first end 222A is freely rotatably connected with a second fulcrum point O2 prepared in the movable cavity mold; a second rink 224 in which a third end 224A is freely rotatably connected with a third fulcrum point O3 prepared in the second end 222B of the first rink; and a third rink 226 in which a fifth end 226A is freely rotatably connected with a fourth fulcrum point O4 prepared between the third end and the fourth end of the second rink, and a sixth end 226B is freely rotatably connected with a fixed fifth fulcrum point O5, and which rotates while centering on the fifth fulcrum point; and a moving part material 230 which makes a sixth fulcrum point O6 prepared in the fourth end of the second rink reciprocated at both sides of a vertical line which passes along the fifth fulcrum point O5. COPYRIGHT: (C)2010,JPO&INPIT |
