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High-response liquid filling device of large rapid hydraulic machine and control method thereof

A technology of a liquid filling device and a hydraulic press, which is applied in the field of hydraulic presses, can solve the problems such as inability to solve the above problems and insufficient response speed, and achieve the effects of high production efficiency and fast response speed.

Inactive Publication Date: 2017-06-30
CHONGQING JIANGDONG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The traditional liquid filling device cannot solve the above problems due to insufficient response speed, so the present invention aims to solve the above problems

Method used

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  • High-response liquid filling device of large rapid hydraulic machine and control method thereof

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings.

[0020] a kind of like figure 1 The high-response liquid filling device of the shown large-scale fast hydraulic machine includes a main pressurized oil cylinder 10, and a liquid filled tank 11 is installed at the tail of the main pressurized oil cylinder 10, and in the filled liquid tank 11 there are several The active control type filling valve 12 on the hydraulic cylinder 10, the inlet and outlet of the control medium of the active control type filling valve 12 are both connected to the main liquid inlet pipe and the main liquid return pipe, and the main liquid inlet pipe is connected to the constant pressure The oil source and the total liquid return pipe are connected to the oil tank, and a proportional directional valve 13 is arranged on the total liquid inlet pipe and the total liquid return pipe.

[0021] The liquid filling tank 11...

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Abstract

The invention discloses a high-response liquid filling device for a large-scale fast hydraulic machine and a control method thereof. The active control type filling valve directly installed on the main pressurized oil cylinder, the inlet and outlet of the control medium of the active control type filling valve are both connected to the main liquid inlet pipe and the main liquid return pipe, and the main liquid inlet pipe The pipe is connected to the constant pressure oil source, and the total liquid return pipe is connected to the oil tank. A proportional directional valve is arranged on the total liquid inlet pipe and the total liquid return pipe. The curve flexible control of the proportional directional valve is used to realize the opening and closing of the filling valve quickly and without impact, which meets the rapid filling of the main pressurized cylinder and the rapid pressure relief without impact when the movable beam of the large-scale fast hydraulic machine is running fast. The invention satisfies the rapid filling of the main pressurized oil cylinder and rapid pressure relief without impact when the movable beam of the large-scale fast hydraulic press runs fast, and has fast response speed and high production efficiency.

Description

technical field [0001] The invention relates to a high-response liquid filling device for a large-scale fast hydraulic machine and a control method thereof, belonging to the technical field of hydraulic machines. Background technique [0002] The idle speed of the movable beam of large-scale fast hydraulic press reaches 800mm-1500mm / s. During the idle running of the movable beam, the filling speed of the main pressurized cylinder is required to be very fast. Prevent the pressure source entering the main pressurizing cylinder from returning oil directly from the filling valve because the filling valve is not closed at a high speed, which will cause the hydraulic press to fail to achieve rapid working and rapid pressurization, and thus cannot adapt to the narrow molding temperature range Die casting process. In addition, in order to improve production efficiency, it is necessary to release pressure quickly and effectively control the impact of pressure release before the mova...

Claims

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Application Information

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IPC IPC(8): B22D17/20B22D17/32
CPCB22D17/32B22D17/2023
Inventor 凌家友汪义高李波熊小军朱家洪马光宪
Owner CHONGQING JIANGDONG MACHINERY