| 摘要 |
PROBLEM TO BE SOLVED: To produce a molding without a flaw in appearance by decreasing the variation of deceleration of a mold in transfer from high-speed movement to low-speed movement when a pair of molds is closed. SOLUTION: A blow molding machine 1 has a first fitting plate 9 which fits and holds a first mold 51 and a second fitting plate 13 which is arranged to face the first mold 51 and fits/holds a second mold 53. One end of each of tie-bars 7 is connected to the first fitting plate 9, a third fitting plate 11 is connected to the other end of each of the tie-bars 7, and the second fitting plate 13 is inserted movably into the tie-bar 7 between the first fitting plate 9 and the third fitting plate 11. The tie-bars 7 are held by a fixed plate. A movement apparatus 20 having a servo-motor 30 used when a pair of molds 50 comprising the first mold 51 and the second mold 53 is moved at a high speed to approach each other and a hydraulic cylinder 40 for holding a pair of the molds 50 being clamped by pressure is installed between the third fitting plate 11 and the second fitting plate 13.
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