Pneumatic/hydraulic balance weight system for mother machines
OwnerChih-Hsiang Huanginventor
Life of this patent
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Abstract
A balance weight system for a unit includes a cylinder and a piston rod having a first end secured to the unit to move therewith. The piston rod further includes a second end with a piston head slidably received in the cylinder and separating the cylinder into a lower chamber for containing hydraulic oil and an upper chamber for containing air. A tank includes hydraulic oil contained in a lower part thereof and a working gas contained in an upper part thereof. A tube has a first end in the hydraulic oil in the lower part of the tank and a second end communicated with the lower chamber of the cylinder. The working gas exerts a pressure on the hydraulic oil to supply the piston rod with a force sufficient to uphold the unit. A motor is provided for moving the unit in a vertical direction.
Claims11
A balance weight system for a unit, comprising:
- a cylinder,
- a piston rod having a first end adapted to be secured to the unit to move therewith, the piston rod further including a second end with a piston head slidably received in the cylinder and separating the cylinder into a lower chamber for containing hydraulic oil and an upper chamber for containing air,
- a tank including hydraulic oil contained in a lower part thereof and a working gas contained in an upper part thereof,
- a tube having a first end in the hydraulic oil in the lower part of the tank and a second end communicated with the lower chamber of the cylinder, the working gas exerting a pressure on the hydraulic oil to supply the piston rod with a force sufficient to uphold the unit, and
- means for moving the unit in a vertical direction.
Dependencies are inferred from the claim text.