A method of using the hydraulic system of a multi-cylinder linkage hydraulic press
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A technology of hydraulic system and hydraulic press, applied in the field of hydraulic system of multi-cylinder linkage hydraulic press, can solve the problem that the hydraulic system cannot well satisfy the bending operation of hydraulic press, reduce vibration and noise, reduce the impact load of pipeline, and prevent overloading of work. Effect
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Problems solved by technology
[0008] The present invention provides a multi-cylinder linkage hydraulic press hydraulic system, which aims to solve the problem that the existing hydraulic system cannot well meet the bending operation of hydraulic presses over 1,000 tons
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Embodiment 1
[0067] The hydraulic system of a multi-cylinder linkage hydraulic press in this embodiment is mainly used for the control of large hydraulic presses with a tonnage of more than 1,000 tons, that is, it is generally applicable to hydraulic presses with more than six columns. For example, the applicant previously applied for a utility model patent titled: A large-tonnage long-span multi-cylinder linkage automobile longitudinal beam pressing and forming hydraulic press, the application number is: 201720545948.4 utility model patent, its structure is as follows figure 1 As shown, there are 10 columns and the tonnage reaches 1650 tons. Such a huge hydraulic machine needs 4 main cylinders 215 to drive the slider to drive the upper mold to move up and down along the column to complete the bending of the workpiece in the lower mold fixed on the workbench. operation, its requirements on the hydraulic system are relatively high; and the hydraulic system structure on the existing general h...
Embodiment 2
[0086] A method for using the hydraulic system of a multi-cylinder linkage hydraulic machine in this embodiment, by controlling the pumps, valves and oil cylinders in the hydraulic system of Embodiment 1, the fast down, slow down, pressure relief and return actions of the main cylinder 215 are realized, as well as the jacking action. The ejection and retraction actions of the cylinder 307.
[0087]In this embodiment, the electromagnets of the two-position four-way solenoid valve I105 of the first two groups in the oil supply control part 100 are denoted as YV1 and YV2 respectively, and the electromagnets on the left and right sides of the three-position four-way solenoid valve I108 of the latter group are denoted as YV3 and YV4; two-position four-way solenoid valve II203, two-position four-way solenoid valve III205, two-position three-way solenoid valve I213, two-position four-way solenoid valve V211, two-position four-way solenoid valve IV209 in the main cylinder control part ...
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Abstract
The invention discloses a multiple-cylinder linkage hydraulic machine hydraulic system use method, and belongs to the technical field of hydraulic machines. The method comprises the control steps of main oil cylinder rapid down, main oil cylinder slow down, main oil cylinder pressure maintaining, main oil cylinder pressure release, main oil cylinder return and the like; when main oil cylinder rapid down is performed, a cartridge valve III, a cartridge valve VII and a cartridge valve VI are switched on, a cartridge valve IV is switched off, an upper cavity of a main oil cylinder is subjected tooil taking, and a lower cavity of the main oil cylinder is subjected to oil return; when main oil cylinder slow down is performed, a cartridge valve VII and a cartridge valve V are switched on, the cartridge valve VI is switched off, the upper cavity of the main oil cylinder is subjected to oil taking, the lower cavity of the main oil cylinder is subjected to oil return, and a workpiece is pressed; when main oil cylinder pressure maintaining is performed, the cartridge valve VII and the cartridge valve VIII are switched off, oil lines of the upper cavity and the lower cavity of the main oil cylinder are disconnected, and the main oil cylinder is locked; when main oil cylinder return is performed, the cartridge valve III is switched off, the cartridge valve IV and the cartridge valve VII are switched on, the lower cavity of the main oil cylinder is subjected to oil taking, and the upper cavity of the main oil cylinder is subjected to oil return. Accordingly, control over actions such as large hydraulic machine rapid down, slow down, pressure maintenance, pressure release and return can be achieved stably and reliably.
Description
technical field [0001] The invention belongs to the technical field of hydraulic presses, and relates to a hydraulic control system of a thousand-ton hydraulic press, more specifically, to a hydraulic system of a multi-cylinder linkage hydraulic press and a method for using the same. Background technique [0002] The hydraulic press is an important forming equipment. The hydraulic pump is driven by a motor to generate high-pressure liquid, and the hydraulic cylinder produces linear motion to work. Due to the wide adaptability of hydraulic machining, it is widely used in metal and non-metal forming processing occasions. [0003] According to the number of columns, the hydraulic press can be divided into: single column type (C type), double column type, four column type, etc. Among them, the four-column hydraulic press is more commonly used. It is a mechanical equipment that uses the static pressure of the hydraulic oil pumped to process metal, plastic, rubber, wood, powder an...
Claims
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