WO2017219337A1

WO2017219337A1 - Hydraulic system for hydraulic machine for forging and pressing elastic material

Info

Publication number: WO2017219337A1
Application number: PCT/CN2016/086967
Authority: WO
Inventors: 邵正国
Original assignee: 邵正国
Priority date: 2016-06-24
Filing date: 2016-06-24
Publication date: 2017-12-28

Abstract

A hydraulic system for forging and pressing an elastic material, comprising an internal gear pump (1), a servo motor (2), a cartridge valve set (3), and an actuating mechanism (9). The servo motor (2) drives the internal gear pump (1) to operate by means of a transmission shaft, and the cartridge valve set (3) is located between a liquid outlet of the internal gear pump (1) and the actuating mechanism (9) of a hydraulic machine. Pressure liquid flowing out of the liquid outlet of the internal gear pump (1) passes through the cartridge valve set (3) in a flowing manner and acts on the actuating mechanism (9) of the hydraulic machine by controlling the cartridge valve set (3).

Description

Hydraulic system of hydraulic press for forging elastic materials

Technical field

The utility model relates to a hydraulic machine system, in particular to a hydraulic system for a hydraulic machine for processing elastic materials.

Background technique

The invention is used on a three-beam four-column hydraulic machine for processing elastic materials. Generally, the hydraulic system used for processing the elastic material is relatively simple, and the processing method is basically the processing method when the elastic material is processed. The control system is more optimized, combining the jog processing method and the semi-automatic processing system to make the processed materials more convenient, and the processing steps can be controlled at any time, and at the same time, it is easy to put in and take out, and the speed of processing the elastic material is improved.

Summary of the invention

The technical problem to be solved by the present invention is to provide a hydraulic working system that can facilitate the processing of elastic materials.

In order to solve the above technical problem, the technical solution of the present invention is:

A hydraulic system for forging elastic materials, the innovations are: including internal gear pump, servo motor, actuator and cartridge valve; servo motor drives internal gear pump through drive shaft, and the cartridge valve is located Between the drain port of the internal gear pump and the actuator of the hydraulic machine;

The actuator includes a master cylinder and a top cylinder. The master cylinder and the top cylinder are respectively connected to the oil passage of the cartridge valve group. The master cylinder includes an oil port A1 and a port B1, and a liquid filling valve a is connected to the master cylinder. The top cylinder includes a port A2 and a port B2;

The cartridge valve valve group includes a master cylinder oil passage and a top cylinder oil passage, and the master cylinder oil passage includes an intermediate closed three-position four-way solenoid valve, an overflow valve, a liquid filling valve, a two-position two-way solenoid valve, a fuel tank, and Adjustable flow valve, the intermediate closed three-position four-way solenoid valve includes oil port a, oil port b, oil port c and oil port d, oil port c is connected with the oil outlet of the internal gear pump, and the liquid filling valve c and The overflow valve c is connected in parallel, one end of the parallel oil passage is connected to the oil port a through the oil pipe, the other end is connected to the oil port A1 of the master cylinder, and a liquid filling valve b is connected in series behind the B1 oil port of the master cylinder, and the liquid filling valve b The oil pipe is connected in series at the port b of the intermediate closed three-position four-way solenoid valve, and a parallel circuit is arranged between the intermediate closed three-position four-way electromagnetic reversing valve and the oil circuit parallel to the liquid filling valve c and the overflow valve c. The overflow valve d, the overflow valve d and the liquid filling valve a are connected in series, the overflow valve c, the liquid filling valve c parallel oil circuit and the main cylinder A1 oil port are connected in parallel with an oil circuit, one end of which is connected in the middle closed type On the oil port c of the three-position four-way solenoid valve, a liquid filling valve d and a two-position four-way solenoid valve a are connected in series on the oil line, and a fuel pipe is connected between the oil port of the main cylinder B1 and the liquid filling valve b. Variable throttle passage with two two-way solenoid valve connected in series;

The top cylinder oil passage comprises an intermediate pressure type three-position four-way electromagnetic valve, a liquid filling valve e and a two-position four-way electromagnetic valve b, and the intermediate pressure type three-position four-way electromagnetic valve comprises a port e, a port f, Port g and port h, the port g of the intermediate pressurized three-position four-way solenoid valve is connected to the port d of the intermediate sealed three-position four-way solenoid valve, and the oil of the intermediate pressurized three-position four-way solenoid valve The port h is connected with the internal gear pump, the port e of the intermediate pressurized three-position four-way solenoid valve is connected with the B2 port of the top cylinder, and the A2 port of the top cylinder is connected with a filling valve e, and the filling valve e Connected to the port f of the intermediate pressurized three-position four-way solenoid valve, an overflow valve b is connected in parallel with the oil passage between the port e of the intermediate pressurized three-position four-way solenoid valve and the B2 port of the top cylinder An overflow valve a is connected in parallel between the top cylinder A2 port and the filling valve e, and a two-position four-way solenoid valve c is further connected in parallel between the top cylinder A2 port and the filling valve e. The four-way solenoid valve c is connected in series with an unregulated flow valve, and the two-position four-way solenoid valve b is connected in parallel with an overflow valve e. One end of the parallel oil circuit is connected in parallel with the internal gear pump and the intermediate closed three-position four-way solenoid valve oil. Mouth c between.

Further, there are four pressure gauges, which are respectively connected in parallel with the oil outlet of the internal gear pump, at the B2 port of the top cylinder, at the A2 port of the top cylinder, and at the B1 port of the master cylinder;

There are two pressure sensors, which are respectively connected in parallel to the liquid outlet of the internal gear pump and the B1 port of the master cylinder;

Further, the cooler is mounted beside the internal gear pump.

Further, a remote control relief valve is connected in series on the top pressure regulating relief valve a of the top cylinder.

The advantages of the invention are:

The hydraulic system, through the combination of jog and semi-automatic machining, is more convenient in processing elastic materials. In the hydraulic system, the pressure relief solenoid valve and the pressure relief valve can adjust the pressure of the top cylinder and the master cylinder at any time. The solenoid valve can control the pressure of the system to increase the safety of the system through the pressure of the pressure gauge reaction at any time. The system of the cartridge valve system is distinct, the operating mechanism is convenient, easy to operate, and the production efficiency is improved.

DRAWINGS

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

Figure 1 is a schematic diagram of the hydraulic system.

Figure 2 is a solenoid valve action table.

Figure 1 shows: 1, internal gear pump; 2, servo motor; 3, cartridge valve group; 4, remote control relief valve; 5, liquid filling valve; 6, pressure gauge; 7, pressure sensor; 8, the cooler. 9. Actuator; 10 two-position four-way solenoid valve; 11, intermediate closed three-position four-way solenoid valve; 12, two-position two-way solenoid valve; 13, relief valve; 14, adjustable flow valve; Pressurized three-position four-way solenoid valve; 16, can not adjust the flow valve.

detailed description

The following examples are intended to provide a fuller understanding of the invention, and are not intended to limit the invention.

A hydraulic machining system as shown in Figure 1 includes:

A hydraulic system for forging elastic material, comprising an internal gear pump 1, a servo motor 2, an actuator 9 and a cartridge valve block 3; the servo motor 2 drives the internal gear pump 1 through a drive shaft, and the cartridge valve block is inserted 3 is located between the discharge port of the internal gear pump 2 and the actuator of the hydraulic machine.

The actuator 9 includes a master cylinder 9a and a top cylinder 9b. The master cylinder 9a and the top cylinder 9b are respectively connected to the oil passage of the cartridge valve group 3. The master cylinder includes an oil port A1 and a port B1, and a charge is connected to the master cylinder. The liquid valve 5a, the top cylinder includes a port A2 and a port B2.

The cartridge valve group 3 includes a master cylinder oil passage and a top cylinder oil passage, and the master cylinder oil passage includes an intermediate closed three-position four-way solenoid valve 11, an overflow valve 13, a liquid filling valve 5, and a two-position two-way solenoid valve 12 a fuel tank and an adjustable flow valve 14, the intermediate closed three-position four-way solenoid valve 11 includes an oil port a, a port b, a port c and a port d, and the port c is connected to the oil outlet of the internal gear pump 1 The liquid filling valve 5c is connected in parallel with the relief valve 13c. One end of the parallel oil passage is connected to the oil port a through the oil pipe, the other end is connected to the A1 oil port of the master cylinder 9a, and a charge is connected in series behind the B1 oil port of the master cylinder 9a. The liquid valve 5b and the liquid filling valve 5b are connected in series through the oil pipe at the port b of the intermediate closed three-position four-way solenoid valve 11, and the intermediate closed three-position four-way solenoid valve 11 is connected in parallel with the liquid filling valve 5c and the relief valve 13c. There is a relief valve 13d connected in parallel between the oil passages, and the overflow valve 13d is connected in series with the filling valve a. The overflow valve 13c, the filling valve 5c parallel oil circuit and the main cylinder A1 oil port are connected in parallel with an oil circuit. One end is connected to the oil port c of the intermediate closed three-position four-way solenoid valve 11, and the oil filling circuit is sequentially connected with a liquid filling valve 5d and a two-position four-way electromagnetic valve 10a, and the main cylinder B1 oil port and the liquid filling valve 5b Connection between the tubing has a variable throttle valve 14 by the passage of two-way solenoid valve 12 connected in series;

The top cylinder oil passage includes an intermediate pressurized three-position four-way solenoid valve 15, a liquid filling valve 5e and a two-position four-way solenoid valve 10b, and the intermediate pressurized three-position four-way solenoid valve 15 includes a port e, a port f, The port g and the port h, the port g of the intermediate pressurized three-position four-way solenoid valve 15 is connected to the port d of the intermediate sealed three-position four-way solenoid valve 11, and the intermediate pressurized three-position four-way solenoid valve The port h of 15 is connected to the internal gear pump 1, the port e of the intermediate pressurized 3/2-way solenoid valve 15 is connected to the B2 port of the top cylinder, the A2 port of the top cylinder 9b and a filling valve 5e Connected, the liquid filling valve 5e is connected to the port f of the intermediate pressure type three-position four-way solenoid valve 15, between the port e of the intermediate pressurized three-position four-way solenoid valve 15 and the B2 port of the top cylinder 9b. An overflow valve 13b is connected in parallel with the oil passage, and an overflow valve 13a is connected in parallel between the oil port of the top cylinder A2 and the liquid filling valve e, and there are two parallels between the oil port of the top cylinder A2 and the liquid filling valve 5e. a solenoid valve 10c is connected in series with an unregulated flow valve 16 in series, and a two-position four-way solenoid valve 10b is connected in parallel with a relief valve 13e. One end of the parallel oil circuit is connected in parallel to the internal gear pump 1 With the middle Between a closed three way solenoid valve port 11 c.

There are four pressure gauges 6, which are respectively connected in parallel with the oil outlet of the internal gear pump 1, at the B2 port of the top cylinder 9b, at the A2 port of the top cylinder 9b, and at the B1 port of the master cylinder 9a.

There are two pressure sensors 7, which are respectively connected in parallel to the liquid outlet of the internal gear pump 1 and the B1 port of the master cylinder 9a.

The cooler 8 is mounted beside the internal gear pump to cool the servo system of the hydraulic system.

The remote control relief valve 4 is connected in series to the ejection pressure relief valve 13a of the top cylinder 9b to remotely control the relief valve.

The working principle of the elastic material forging hydraulic system is:

When the hydraulic system is in operation, the master cylinder oil passage controls the fast action of the master cylinder 9a, the pressing, and the return stroke.

The running condition of the fast acting main cylinder oil circuit is: the liquid is divided into two paths after the action of the internal gear pump 1 driven by the servo motor 2, one way enters the two-position four-way solenoid valve 10a through the conveying pipe, and the other route port c Entering the middle closed three-position four-way solenoid valve 11, the electromagnet YA1 is turned on, the liquid flows out through the intermediate closed three-position four-way solenoid valve 11 from the oil port b, and the hydraulic oil passes through the liquid filling valve 5b behind the electromagnetic valve. Finally, it enters the master cylinder 9a through the B1 port, and the liquid liquid opens the liquid filling valve 5d. The electromagnet YA5 is turned on to control the opening of the liquid filling valve 5d, and the liquid quickly flows out from the A1 port, and quickly enters the fuel tank through the liquid filling valve 5d. The electromagnet YA8 is turned on to control the pressure of the electric control system, and the other electromagnets are turned off and not energized to realize the quick action of the master cylinder 9a.

The operation of the main cylinder oil circuit of the pressing action is: the liquid is divided into two paths after the action of the internal gear pump 1 driven by the servo motor 2, one way enters the two-position four-way solenoid valve 10a through the conveying pipe, and the other route oil port c enters The intermediate closed three-position four-way solenoid valve 11 is opened by the electromagnet YA1, and the liquid flows out through the intermediate closed three-position four-way solenoid valve 11 through the oil port b, and then through the liquid filling valve 5b connected behind the electromagnetic valve, and finally The B1 port enters the master cylinder 9a, the electromagnet YA5 is closed, and the liquid filling valve 5d is not opened, so that the liquid cannot pass through the 2/2-way valve 10a. After the liquid flows out from the A1 port, it passes through the overflow valve 13c and then passes through the middle. The closed three-position four-way solenoid valve 11 flows out of the oil port d and directly enters the oil tank. The electromagnet YA8 is opened to the pressure of the electric control system, and the other electromagnets are turned off and the electricity is not turned on, so that the pressing action of the master cylinder 9a is realized.

The running condition of the return stroke master cylinder oil circuit is: after the liquid is driven by the internal gear pump 1 driven by the servo motor 2, the oil port c enters the intermediate closed three-position four-way solenoid valve 11 through the conveying pipe, and the electromagnet YA2 opens. When it is energized, the liquid flows out from the intermediate closed three-position four-way solenoid valve port a into two paths, one through the filling valve 5c from the A1 port into the master cylinder 9a, the other channel in the top opening the filling valve 5a, in the master cylinder 9a The liquid enters the oil tank through the liquid filling valve 5a, and the electromagnet YA8 is opened to the pressure of the electric control system, and the other electromagnets are turned off and the electric power is not turned on, thereby realizing the returning action of the master cylinder 9a.

When the top cylinder oil passage is in operation, the top cylinder oil passage controls the ejection and retreat of the top cylinder 9b.

The operation of the ejector action top cylinder oil passage is: after the liquid is driven by the internal gear pump 1 driven by the servo motor 2, the liquid enters the intermediate pressure type three-position four-way solenoid valve 15 from the oil port g, and the electromagnet YA3 opens. When it is energized, the liquid flows out through the intermediate pressure type three-position four-way solenoid valve 15 from the port port f, the liquid flows through the filling valve 5e, and finally enters the top cylinder 9b from the A2 port, and the liquid flows out through the B2 port through the middle. The pressure type three-position four-way solenoid valve 15 oil port e merges with the liquid entering from the oil port g, and circulates out from the oil port f, the electromagnet YA8 is opened to the pressure of the electric control system, and the other electromagnets are turned off and the electricity is not realized. The ejection operation of the top cylinder 9b.

The operation of the retracting action top cylinder oil circuit is: after the liquid is driven by the internal gear pump 1 driven by the servo motor 2, the liquid enters the intermediate pressure type three-position four-way solenoid valve 15 from the oil port g, and the electromagnet YA4 is opened. Electric, liquid flows out from the intermediate pressurized three-position four-way solenoid valve 15 port e, from the B2 port into the top cylinder 9b, the liquid flows out from the A2 port, passes through the top-opening flush valve 5e, and passes through the intermediate pressurized three-position The oil port f of the four-way solenoid valve 15 merges with the liquid entering the port g, and the circulation flows out from the port e. The electromagnet YA8 is opened to the pressure of the electric control system, and the other electromagnets are turned off and the electric power is turned off, so that the retreat of the top cylinder 9b is realized. action.

Claims

A hydraulic system for forging an elastic material, comprising: an internal gear pump, a servo motor, an actuator and a cartridge valve group; the servo motor drives the internal gear pump through the transmission shaft, and the cartridge valve group is located inside Between the drain port of the meshing gear pump and the actuator of the hydraulic machine;

The actuator includes a master cylinder and a top cylinder. The master cylinder and the top cylinder are respectively connected to the oil passage of the cartridge valve group. The master cylinder includes an oil port A1 and a port B1, and a liquid filling valve a is connected to the master cylinder. The top cylinder includes a port A2 and a port B2;

The cartridge valve valve group includes a master cylinder oil passage and a top cylinder oil passage, and the master cylinder oil passage includes an intermediate closed three-position four-way solenoid valve, an overflow valve, a liquid filling valve, a two-position two-way solenoid valve, a fuel tank, and Adjustable flow valve, the intermediate closed three-position four-way solenoid valve includes oil port a, oil port b, oil port c and oil port d, oil port c is connected with the oil outlet of the internal gear pump, and the liquid filling valve c and The overflow valve c is connected in parallel, one end of the parallel oil passage is connected to the oil port a through the oil pipe, the other end is connected to the oil port A1 of the master cylinder, and a liquid filling valve b is connected in series behind the B1 oil port of the master cylinder, and the liquid filling valve b The oil pipe is connected in series at the port b of the intermediate closed three-position four-way solenoid valve, and an overflow is connected in parallel between the intermediate closed three-position four-way solenoid valve and the oil circuit parallel to the liquid filling valve c and the overflow valve c. Valve d, the overflow valve d and the liquid filling valve a are connected in series, the overflow valve c, the liquid filling valve c parallel oil circuit and the main cylinder A1 oil port are connected in parallel with an oil circuit, one end of which is connected in the middle closed three positions On the oil port c of the four-way solenoid valve, a liquid filling valve d and a two-position four-way solenoid valve a are connected in series on the oil line, and a connection between the oil pipe of the main cylinder B1 port and the liquid filling valve b is provided. Throttle and two-way solenoid valves connected in series in the passage;

The top cylinder oil passage comprises an intermediate pressure type three-position four-way electromagnetic valve, a liquid filling valve e and a two-position four-way electromagnetic valve b, and the intermediate pressure type three-position four-way electromagnetic valve comprises a port e, a port f, Port g and port h, the port g of the intermediate pressurized three-position four-way solenoid valve is connected to the port d of the intermediate sealed three-position four-way solenoid valve, and the oil of the intermediate pressurized three-position four-way solenoid valve The port h is connected with the internal gear pump, the port e of the intermediate pressurized three-position four-way solenoid valve is connected with the B2 port of the top cylinder, and the A2 port of the top cylinder is connected with a filling valve e, and the filling valve e Connected to the port f of the intermediate pressurized three-position four-way solenoid valve, an overflow valve b is connected in parallel with the oil passage between the port e of the intermediate pressurized three-position four-way solenoid valve and the B2 port of the top cylinder An overflow valve a is connected in parallel between the top cylinder A2 port and the filling valve e, and a two-position four-way solenoid valve c is further connected in parallel between the top cylinder A2 port and the filling valve e. The four-way solenoid valve c is connected in series with an unregulated flow valve, and the two-position four-way solenoid valve b is connected in parallel with an overflow valve e. One end of the parallel oil circuit is connected in parallel with the internal gear pump and the intermediate closed three-position four-way solenoid valve oil. Mouth c between.
A hydraulic system for forging an elastic material according to claim 1, wherein:

There are four pressure gauges, which are respectively connected in parallel with the oil outlet of the internal gear pump, at the B2 port of the top cylinder, at the A2 port of the top cylinder, at the B1 port of the master cylinder, and the pressure. There are two sensors, which are respectively connected to the liquid outlet of the internal gear pump and the B1 port of the master cylinder.
A hydraulic system for forging an elastic material according to claim 1, wherein: the cooler is mounted beside the internal gear pump.
A hydraulic system for forging an elastic material according to claim 1, wherein a remote control relief valve is connected in series with the ejector pressure relief valve a of the top cylinder.