Title:
シリンダ装置、プレス装置、ワーククランプ装置、シリンダ装置動作方法、ワークのクランプ方法、及びワークのプレス方法
Document Type and Number:
Japanese Patent JP6999439
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cylinder device with large stroke, using an air hydraulic cylinder.SOLUTION: A pneumatic chamber 20 is composed of a first pneumatic chamber 21 for pressurizing a first piston 11, and a second pneumatic chamber 22 for pressurizing a second piston 12. The first pneumatic chamber 21 and the second pneumatic chamber 22 are communicated by a communication hole 87 formed through the inside of a retaining bolt 17. The second pneumatic chamber 22 is formed on a hydraulic pressure generating portion 55 moving in a cylinder 2 in a thrust direction, and can be separated from the first pneumatic chamber 21. Further the communication hole 87 is separated into a communication hole 87a and a communication hole 87b in accompany with the separation, a rod part 50 of the first piston 11 is also separated into a rod part 50a and a rod part 50b, and the communication hole 87b and the rod part 50b are formed movably in the thrust direction with the hydraulic pressure generating portion 55.SELECTED DRAWING: Figure 1
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Inventors:
Shigehiro Arai
Application Number:
JP2018021722A
Publication Date:
January 18, 2022
Filing Date:
February 09, 2018
Export Citation:
Assignee:
Seiko Instruments Inc.
International Classes:
F15B3/00; B30B1/32
Domestic Patent References:
| JP2007064339A | ||||
| JP6159303A |
Foreign References:
| GB1228058A |
Attorney, Agent or Firm:
Takashi Kawai
Nakano Hitoshi
Nakano Hitoshi
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