| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an injection apparatus of a molding machine in which any tank can be eliminated. <P>SOLUTION: The injection apparatus 1 includes an injection cylinder device 7 capable of driving an injection plunger 5, a conversion cylinder device 9 for feeding working fluid to the injection cylinder device 7, a first communication passage 57 for communicating a rod side chamber 25r of the injection cylinder device 7 with a rear side chamber 27r of the conversion cylinder device 9, and a motor 11 capable of driving a conversion piston 29 of the conversion cylinder device 9. In the injection motion of the injection apparatus, the working fluid in the rod side chamber 25r is discharged to the rear side chamber 27r via the first communication passage 57, and a space SP in which any working fluid is not present is formed in the rear side chamber 27r according to the insufficient amount of the working fluid. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
