Connecting method of load control dual-pressure system for high-speed punching machine

Abstract

The invention discloses a connecting method of a load control dual-pressure system for a high-speed punching machine. The connecting method comprises the following steps: firstly, double pressure pumps, namely a high-pressure large-flow pump and a low-pressure small-flow pump, are respectively arranged inside a hydraulic system; an energy accumulator is additionally arranged on an oil path between the low-pressure small-flow pump and a hydraulic cylinder; meanwhile, another energy accumulator is additionally arranged on the oil path between the high-pressure large-flow pump and the hydraulic cylinder as an auxiliary power source; then the set load control dual-pressure system is adopted; rapid movement and punching action of the hydraulic cylinder are achieved by alternative use of the double pumps; simultaneously, a differential connection circuit is additionally arranged on the hydraulic system, and a hydraulically operated direction control valve is additionally arranged to achieve the on / off the differential connection circuit and the unloading of a low-pressure pump. The connecting method has the beneficial effects that the system is stable to move, the speed is easy to adjust, the travel is controllable and the noise is low; the stamping frequency is improved, and the service life is prolonged. Meanwhile, the operation controllability can be improved, and the labor intensity is reduced.

Description

technical field

[0001] The invention relates to the field of hydraulic technology, in particular to a method for connecting a dual-pressure system for load control of a high-speed punch. Background technique

[0002] The hydraulic system has the advantages of high power, good working pressure and flow adjustability, and heat can be brought back to the fuel tank. The hydraulic system device can generate more power than other devices. Under the same power, the hydraulic device is small in size, Light weight, high power density and compact structure. With the development of modern automobile industry, electronic technology and national defense industry, the market demand for stamping equipment, especially high-speed stamping equipment is increasing. Stamping technology is one of the widely used metal pressure processing methods. Therefore, countries with advanced industries More and more stamping technology is used instead of cutting technology and other processing technology....

Examples

Embodiment Construction

[0010] The method for connecting a dual-pressure system for load control of a high-speed punch according to the embodiment of the present invention includes the following main steps:

[0011] (1) First of all, set up dual pressure pumps in the hydraulic system, namely, a high-pressure large-flow pump and a low-pressure small-flow pump, and add an accumulator on the oil circuit between the low-pressure small-flow pump and the hydraulic cylinder. Another accumulator is added on the oil circuit between the flow pump and the hydraulic cylinder as an auxiliary power source;

[0012] (2) Then, the set load control dual pressure system is used, and the rapid movement and punching action of the hydraulic cylinder are realized by the alternate use of the dual pumps; And a valve unit consisting of an electromagnetic reversing valve, a relief valve and a proportional servo valve is arranged at the end of the oil circuit area formed after the connection;

[0013] (3) At the same time, a ...

technical field

[0001] The invention relates to the field of hydraulic technology, in particular to a method for connecting a dual-pressure system for load control of a high-speed punch. Background technique

[0002] The hydraulic system has the advantages of high power, good working pressure and flow adjustability, and heat can be brought back to the fuel tank. The hydraulic system device can generate more power than other devices. Under the same power, the hydraulic device is small in size, Light weight, high power density and compact structure. With the development of modern automobile industry, electronic technology and national defense industry, the market demand for stamping equipment, especially high-speed stamping equipment is increasing. Stamping technology is one of the widely used metal pressure processing methods. Therefore, countries with advanced industries More and more stamping technology is used instead of cutting technology and other processing technology....

Examples

Embodiment Construction

[0010] The method for connecting a dual-pressure system for load control of a high-speed punch according to the embodiment of the present invention includes the following main steps:

[0011] (1) First of all, set up dual pressure pumps in the hydraulic system, namely, a high-pressure large-flow pump and a low-pressure small-flow pump, and add an accumulator on the oil circuit between the low-pressure small-flow pump and the hydraulic cylinder. Another accumulator is added on the oil circuit between the flow pump and the hydraulic cylinder as an auxiliary power source;

[0012] (2) Then, the set load control dual pressure system is used, and the rapid movement and punching action of the hydraulic cylinder are realized by the alternate use of the dual pumps; And a valve unit consisting of an electromagnetic reversing valve, a relief valve and a proportional servo valve is arranged at the end of the oil circuit area formed after the connection;

[0013] (3) At the same time, a ...