Combined type press hydraulic cylinder

Abstract

The combined hydraulic cylinder of press has a tubular cylinder body with closed bottom, in the cylinder body there is a column-shape hydraulic cylinder internal chamber in which is matched with a column-shape piston. At side wall of the cylinder bottom there is a liquid inlet-outlet, there is a piston hydraulic cylinder which is used as a piston on the axis of which there is an opening toward to the internal chamber of the column-shape piston hydraulic cylinder with closed bottom. In the internal chamber of the piston hydraulic cylinder there is a tubular piston matching with the internal chamber, and the tubular piston is fixedly connected to the middle part of the cylinder bottom, the tube mouth of the tubular piston extends to outer of the cylinder. The diameter of internal chamber of the piston hydraulic cylinder is 10%- 20% of that of the hydraulic cylinder. Advantages: it can use high-pressure low-flow hydraulic pump with low power to realize quickly folding clamping device and applying high pressure to the clamping device, so it can save energy source.

Description

technical field [0001] The invention relates to a hydraulic cylinder, in particular to a piston hydraulic cylinder with a hydraulic cylinder inner chamber for a press. Background technique [0002] The hydraulic cylinder of the press is the core component of the press. The press is used to apply pressure to the workpiece. The press has a frame with a hydraulic cylinder and a clamping device that can be opened and closed. The hydraulic cylinder of the press has a cylindrical cylinder body with a closed bottom, and a cylindrical hydraulic cylinder inner chamber in the cylinder body, and a cylindrical piston matching the inner chamber of the hydraulic cylinder, and the bottom side of the cylinder body There is a liquid inlet and outlet on the wall, a piston rod is connected to the outer end of the piston, and the piston rod is connected to the clamping device of the press machine. Use a hydraulic pump to fill the inner cavity of the hydraulic cylinder with liquid, which can m...

AI Technical Summary

Problems solved by technology

High-pressure hydraulic pumps are used for presses with high working pressure, but the high-pressure hydraulic pumps have a small flow rate and cannot quickly merge the clamping devices. In order to quickly combine the clamping devices, some presses use high-flow high-pressure hydraulic pumps. It is necessary to increase the power of the hydraulic pump, resulting in large energy consumption during use and high equipment cost; there are also high-flow low-pressure hydraulic pumps and high-pressure low-flow hydraulic pumps used in combination, which also increases the cost of equipment

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