Hydraulic device with high pressure and large flow rate for rapid boosting

Abstract

The invention discloses a high-pressure and large-flow hydraulic device capable of rapidly pressurizing. The high-pressure and large-flow hydraulic device comprises a high-pressure energy accumulator group, a middle-pressure energy accumulator group and a small-flow high-pressure oil pump, wherein an output oil path of the high-pressure energy accumulator group is connected with a hydraulic execution element; an output oil path of the middle-pressure energy accumulator group is connected with the hydraulic execution element; an input oil path of the small-flow high-pressure oil pump is connected with an oil tank; and an output oil path of the small-flow high-pressure oil pump is connected with the high-pressure energy accumulator group. With the adoption of the structure, the high-pressure and large-flow hydraulic device capable of rapidly pressurizing has the beneficial effects that the used oil pump is small, is easy to mount and is low in price; the power needed by the small-flow high-pressure oil pump is small, the impact to an electric system is small and the energy consumption is low; and the pressurizing time of the high-pressure energy accumulator group is short and the device can be rapidly pressurized within the very short time.

Description

technical field [0001] The invention belongs to the technical field of hydraulic control, and in particular relates to a hydraulic device mainly used for an injection cylinder of an inner cavity metal extrusion molding machine. Background technique [0002] In the inner cavity metal extrusion molding machine, the liquid metal needs to be rapidly pressurized to meet the injection pressure requirements, otherwise the liquid metal will solidify rapidly, resulting in uneven product molding, which cannot meet the design requirements, so whether the injection mechanism can Achieving rapid boost can make or break a product. At present, a high-flow high-pressure pump can be used to achieve rapid pressurization in a very short period of time, but the disadvantage of this solution is that the oil pump used is large in size, which makes assembly difficult and expensive. Contents of the invention [0003] The object of the present invention is to address the shortcomings of the prior...

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Problems solved by technology

[0002] In the inner cavity metal extrusion molding machine, the liquid metal needs to be rapidly pressurized to meet the injection pressure requirements, otherwise the liquid metal will solidify rapidly, resulting in uneven product molding, which cannot meet the design requirements, so whether the injection mechanism can Achieving rapid boost can make or break a product

At present, a high-flow high-pressure pump can be used to achieve rapid pressurization in a very short time, but the disadvantage of this solution is that the oil pump used is large in size, which makes assembly difficult, and the price is relatively expensive

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