| 摘要 |
PROBLEM TO BE SOLVED: To provide an economical plunger actuator. SOLUTION: The plunger apparatus used for an I.S. glass forming machine is provided with a single body housing 2 consisting of a lower part 4 having vertical cylindrical bores 6, 8 and an upper part 14 which can accommodate a plunger guide and a positioning apparatus, a piston head 28 installed on a piston rod 26, a sealing member 20 of the lower part to seal the lower end of the vertical cylindrical bores, a hollow pipe 24 used as a rod guide means which extends from the sealing member 20 to guide the piston rod, a sealing member 34 of the upper part which seals the top of the vertical cylindrical bores and has an opening 38 through which the piston rod can pass, and a screw 36 used as a connecting means to fix the sealing member of the upper part to the single body housing 2.
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