| 摘要 |
PROBLEM TO BE SOLVED: To make sure that a rubber material is degassed by venting gas from the rubber material in accordance with the quality and shape of the rubber material through controlling the approach positions of the paired halves of a rubber vulcanizing molding die in addition to the control of a die clamping pressure. SOLUTION: The top force 12 of a rubber vulcanizing molding die is fixed to a fixed platen 11a above a fixed frame 11 and a vacuum box 13 to be made to ascend/descend by a cylinder 14 for ascent/descent is arranged around the top force 12. On the other hand, a lifting table 16 which is made to ascend/ descend by a hydraulic cylinder device 15 is installed at the lower part of the fixed frame 11 and a movable platen 18 is arranged on the lifting table 16 through a load cell 17. In addition, the bottom force 19 of the rubber vulcanizing molding die is mounted, in a freely proceding/receding manner, on the movable platen 18. Further, a press mechanism 21 for clamping the die is set between the fixed frame 11 and the lifting table 16. A vulcanized rubber material is gradually squashed to degas it by controlling the movable platen 18 with the help of a pressurizing force by the press mechanism 21 and a position control by the hydraulic cylinder device 15.
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