| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a hollow seal that has high design flexibility and can easily manufacture the hollow seal which is decompressed the inside and sealed and this manufacturing apparatus. <P>SOLUTION: A bushing 3 can use a usual electric heating furnace. A mold 5 is arranged in the bushing 3. The mold 5 includes at least a pair of an upper mold and a lower mold, and a tubular material 7 is sandwiched between the upper mold and the lower mold. A temperature adjustment part 9 is connected to the bushing 3. The temperature adjustment part 9 is a part that measures the temperature inside the bushing 3, and regulates the temperature inside the bushing 3 according to the temperature increase rate etc. programmed beforehand. An inert gas supply part 13 and a pressure reducing device 15, etc. are connected to the bushing 3 through a piping 19 and a valve 17. The internal space of bushing 3 can be made the inert gas atmosphere by supplying the inert gas by the operation of the valve 17, and the inside of the bushing 3 can be made to the vacuum by the pressure reducing device 15. <P>COPYRIGHT: (C)2013,JPO&INPIT |
