Hydraulic proportional control system of chamfering machine supporting device
The hydraulic proportional control system of the chamfering machine lifting device solves the problems of pipe position change and uneven force during chamfering machine processing, achieves stable lifting and uniform pressure adjustment, improves processing stability and equipment reliability, and extends equipment life.
Patent Information
- Application Number
- CN202423037318.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-12-10
AI Technical Summary
When processing steel pipes, traditional chamfering machines cause unstable processing due to changes in pipe position and uneven force, making it difficult to meet the requirements of efficient automation and specific lifting stroke and pressure.
The chamfering machine lifting device adopts a hydraulic proportional control system, including an oil tank, a servo motor oil pump group, an oil filter, a pressure measuring device, a superimposed hydraulically controlled one-way valve, a lifting cylinder and other components. Stable lifting and pressure regulation are achieved through hydraulic proportional control. Combined with an electronic pressure switch and a cooler, the system stability and reliability are ensured.
The stable lifting and uniform lifting of the chamfering machine's lifting device are achieved, which improves the processing stability and the operating reliability of the equipment, extends the equipment life and ensures the processing quality.
Smart Images
Figure CN223411171U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic control, in particular to a hydraulic proportional control system for a lifting device of a chamfering machine. Background Art
[0002] With the development of the pipe manufacturing industry, the demand for steel pipes of various specifications is increasing. Based on the needs of users for efficient automation and their own material processing characteristics, specific lifting stroke and specific supporting pressure have become the basic requirements for the operation of chamfering machines.
[0003] When chamfering or flattening pipes, they must remain stable to ensure the quality of the finished product. Because traditional systems often rely on manual or simple mechanical positioning, such as blocks and limit plates, the pipes are prone to positional shifts and uneven force, making the process unstable.
[0004] Therefore, we designed a hydraulic proportional control system for the lifting device of the chamfering machine to solve the above problems. Utility Model Content
[0005] The purpose of the utility model is to provide a hydraulic proportional control system for a lifting device of a chamfering machine to solve the problems raised in the above background technology.
[0006] In order to solve the above technical problems, the utility model provides a hydraulic proportional control system for a chamfering machine lifting device, comprising an oil tank, which is arranged on the ground, and a servo motor oil pump group is arranged on the oil tank, an oil filter is installed outside the servo motor oil pump group, a pressure measuring device is provided at the other end of the oil filter, a pipeline is provided at the other end of the pressure measuring device, a superimposed hydraulically controlled one-way valve is provided at the other end of the pipeline, a lifting oil cylinder is installed outside the superimposed hydraulically controlled one-way valve, and a proportional pressure valve is also installed outside the oil tank.
[0007] Furthermore, the top surface of the oil tank is connected to pipeline 2, and the servo motor oil pump group is connected to the oil tank through pipeline 2. A proportional reversing valve is installed outside the servo motor oil pump group, and the proportional reversing valve is installed between the pressure measuring device and the superimposed hydraulic control one-way valve. A cooler is also provided on the top surface of the oil tank, and a liquid level and temperature sensor is installed outside the cooler, and the liquid level and temperature sensor is provided on the oil tank.
[0008] Furthermore, one end of the superimposed hydraulically controlled one-way valve is connected to two pipes three, one of which is equipped with an electronic pressure switch, and the electronic pressure switch is arranged at one end of the lifting cylinder.
[0009] Furthermore, oil is provided in the oil tank, and one end of the second pipeline extends into the oil tank through a servo motor oil pump assembly.
[0010] Furthermore, the sensing end of the liquid level and liquid temperature sensor extends into the interior of the oil tank and contacts the oil.
[0011] Furthermore, an air filter is provided on the fuel tank.
[0012] Furthermore, there are two lifting cylinders, which are respectively arranged on both sides of the oil tank.
[0013] Furthermore, the oil tank is connected to a branch pipe, and the cooler and the proportional pressure valve are connected via the branch pipe.
[0014] After the oil cylinder is lifted up, the servo motor oil pump group is started, and the servo motor oil pump group runs at a high speed. The proportional pressure valve increases the pressure of the electrified system, and the proportional reversing valve opens a certain opening. The pressure oil passes through the superimposed hydraulic control one-way valve to reach the rodless chamber of the lifting oil cylinder, and the oil in the rod chamber flows back to the oil tank through the corresponding circuit. The lifting device is lifted. When the wire encoder detects that the stroke reaches the set position, each valve is powered off and on standby. The pressure oil passes through the superimposed hydraulic control one-way valve to reach the rodless chamber of the lifting oil cylinder, and the device is kept stably lifted. The system has a simple structure, is easy to adjust and maintain, and works smoothly and reliably.
[0015] The beneficial effects of the present invention are as follows: after lifting, the two ends of the material are mechanically clamped, and the pressure value of the rodless cavity in the lifting cylinder is detected by an electronic pressure switch. If there is a leakage, the supporting material pressure is lower than the signal setting pressure of 2MPa, and the servo motor oil pump group runs at a medium speed to execute the lifting condition of the lifting cylinder, so that the supporting material pressure returns to the signal point, and then the valves are powered off and on standby, and the machine tool processes normally. After the workpiece processing is completed, the supporting material cylinder falls with low pressure control, which increases the operation stability of the machine tool; when the system oil temperature is high and needs to be cooled, the servo motor speed is increased to 1450rpm to cooperate with the cooler to cool down, further improving the operation stability of the device and increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0017] In the figure: 1. Fuel tank; 2. Air filter; 3. Servo motor oil pump group; 4. Oil filter; 5. Pressure measuring device; 6. Proportional reversing valve; 7. Superimposed hydraulically controlled one-way valve; 8. Electronic pressure switch; 9. Lifting cylinder; 10. Liquid level and temperature sensor; 11. Cooler; 12. Proportional pressure valve. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] See also Figure 1 The utility model provides a technical solution: a hydraulic proportional control system of a chamfering machine lifting device, comprising an oil tank 1, the oil tank 1 is arranged on the ground, a servo motor oil pump group 3 is arranged on the oil tank 1, an oil filter 4 is installed outside the servo motor oil pump group 3, a pressure measuring device 5 is arranged at the other end of the oil filter 4, a pipe 1 is provided at the other end of the pressure measuring device 5, a superimposed hydraulically controlled one-way valve 7 is provided at the other end of the pipe 1, and the number of the superimposed hydraulically controlled one-way valves 7 is two, which are symmetrically arranged on the oil tank 1, a lifting oil cylinder 9 is installed outside the two superimposed hydraulically controlled one-way valves 7, a proportional pressure valve 12 is also installed outside the oil tank 1, oil is arranged in the oil tank 1, and one end of the pipe 2 extends into the oil tank 1 through the servo motor oil pump group 3.
[0020] During specific implementation, when the oil cylinder needs to be lifted, the servo motor oil pump group 3 is started, and the servo motor oil pump group 3 runs at a high speed. The proportional pressure valve 12 increases the pressure of the energized system, and the proportional reversing valve 6 opens a certain opening. The pressure oil passes through the superimposed hydraulic control one-way valve 7 to reach the rodless chamber of the lifting cylinder 9, and the oil in the rod chamber flows back to the oil tank 1 through the corresponding circuit. The lifting device is lifted, and when the wire encoder detects that the stroke reaches the set position, each valve is powered off and on standby.
[0021] See Figure 1 As shown, the top surface of the oil tank 1 is connected to a pipe 2, the servo motor oil pump group 3 is connected to the oil tank 1 through the pipe 2, a proportional reversing valve 6 is installed outside the servo motor oil pump group 3, and the proportional reversing valve 6 is installed between the pressure measuring device 5 and the superimposed hydraulic control one-way valve 7. A cooler 11 is also provided on the top surface of the oil tank 1, and a liquid level and temperature sensor 10 is installed outside the cooler 11. The liquid level and temperature sensor 10 is arranged on the oil tank 1, and an air filter 2 is also provided on the oil tank 1.
[0022] During specific implementation, the servo motor oil pump group 3 is connected to the oil tank 1 through a pipeline. After the oil is discharged, it passes through the oil filter 4 and is then connected to the proportional pressure valve 12 and the proportional reversing valve 6. The oil in the proportional pressure valve 12 enters the cooler 11 through the branch pipe and then flows back into the oil tank 1. At this time, the servo motor oil pump group 3 moves at close to zero speed and waits for standby; at this time, the liquid level and temperature sensor 10 displays the system oil temperature and position in real time, the air filter 2 provides sufficient clean air for the system operation, and the system pressure is measured by the pressure measuring device 5. The cooler 11 cooperates with the servo motor oil pump group 3 to cool the system as needed.
[0023] See Figure 1 One end of the superimposed hydraulically controlled one-way valve 7 is connected to two pipes 3, one of which is equipped with an electronic pressure switch 8, which is arranged at one end of the lifting cylinder 9.
[0024] During specific implementation, after lifting, the two ends of the material are clamped mechanically, and the electronic pressure switch 8 detects the pressure value of the rodless chamber in the lifting cylinder 9. If there is a leakage, the supporting material pressure is lower than the signal setting pressure of 2MPa, and the servo motor oil pump group 3 runs at a medium speed to execute the lifting condition of the lifting cylinder 9, so that the supporting material pressure reaches the signal point again, and then all valves are powered off and standby, and the machine tool operates normally.
[0025] See Figure 1 The sensing end of the liquid level and temperature sensor 10 extends into the interior of the oil tank 1 and contacts the oil phase. The sensing end of the liquid level and temperature sensor 10 extends into the interior of the oil tank 1 through a specially designed mounting hole or pipe. During installation, it is necessary to ensure that the sensing end of the sensor penetrates the oil tank 1 to a sufficient depth to ensure accurate contact with the oil phase. The sensing end of the liquid level and temperature sensor 10 is close to the inner bottom wall of the oil tank 1 but does not contact the inner bottom wall of the oil tank 1. When the oil is at different liquid levels in the oil tank 1, the sensing end of the liquid level and temperature sensor 10 can accurately sense the change in liquid level and convert the corresponding liquid level signal into an electrical signal to transmit to the control system. At the same time, since the temperature of the oil changes during operation, the sensing end of the sensor can also keenly capture temperature fluctuations and convert temperature information into an electrical signal that can be recognized and processed by the system, so that the control system can accurately monitor and adjust the operating status of the hydraulic system based on real-time data on liquid level and temperature.
[0026] See Figure 1 There are two lifting cylinders 9, which are respectively arranged on both sides of the oil tank 1. When the chamfering machine performs the lifting action, the lifting cylinders 9 on both sides work simultaneously and work together to exert force; they extend or retract their respective piston rods to provide a stable and uniform lifting force for the lifting device.
[0027] See Figure 1The oil tank 1 is connected to a branch pipe, and the cooler 11 and the proportional pressure valve 12 are both connected through the branch pipe. The cooler 11 is connected to the oil tank 1 through one of the branch pipes. When the hydraulic oil circulates in the system and heats up due to various energy losses, the hot oil will flow into the cooler 11 along the branch pipe, and the cooler 11 will quickly cool the incoming hot oil. The cooled oil will then flow back to the oil tank 1 through another branch pipe connected between the cooler 11 and the oil tank 1, thereby maintaining the stability of the oil temperature in the oil tank 1 and ensuring that the entire hydraulic system operates in an appropriate temperature environment, avoiding problems such as hydraulic oil performance degradation and increased wear of system components due to excessively high oil temperature. After being pressurized by the pump, the hydraulic oil flowing out of the oil tank 1 will partially flow along the corresponding pipeline to the branch pipe connected to the proportional pressure valve 12. The proportional pressure valve 12 accurately adjusts the pressure of the oil in the branch pipe according to the system control signal.
[0028] Working principle: The servo motor oil pump group 3 is connected to the oil tank 1 through a pipeline. After the oil is discharged, it passes through the oil filter 4 and is then connected to the proportional pressure valve 12 and the proportional reversing valve 6. The oil in the proportional pressure valve 12 enters the cooler 11 through the branch pipe and then flows back to the oil tank 1. At this time, the servo motor oil pump group 3 is moving at close to zero speed and is waiting for standby. At this time, the liquid level and temperature sensor 10 displays the system oil temperature and position in real time. The air filter 2 provides sufficient clean air for the system operation, and the system pressure is measured by the pressure measuring device 5. The cooler 11 cooperates with the servo motor oil pump group 3 to cool the system as needed. When the oil cylinder needs to be raised, the servo motor oil pump group 3 is started at this time to make the servo motor oil pump group 3 run at a high speed. The proportional pressure valve 12 increases the pressure of the energized system, and the proportional reversing valve 6 opens a certain opening. The pressure oil passes through the superimposed hydraulic control one-way valve 7 to reach the rodless cavity of the lifting cylinder 9, and the rod cavity oil The liquid flows back to the oil tank 1 through the corresponding circuit, and the lifting device is raised. When the wire encoder detects that the stroke reaches the set position, all valves are powered off and on standby. After lifting, the two ends of the material are mechanically clamped, and the electronic pressure switch 8 detects the pressure value of the rodless cavity in the lifting cylinder 9. If there is a leakage and the supporting material pressure is lower than the signal setting pressure of 2MPa, the servo motor oil pump group 3 will run at a medium speed to execute the lifting condition of the lifting cylinder 9, so that the supporting material pressure returns to the signal point, and then all valves are powered off and on standby, and the machine tool can process normally. When the material processing is completed, the servo motor oil pump group 3 is controlled to run at a medium speed, and the proportional pressure valve 12 is powered to start a lower pressure value. At this time, the proportional reversing valve 6 opens a certain opening in the opposite direction, and the pressure oil passes through the superimposed hydraulic control one-way valve 7 to the rod cavity in the lifting cylinder 9. The oil in the rodless cavity flows back to the oil tank 1 through the corresponding circuit, and the lifting device falls. When the wire encoder detects that the stroke reaches the set position, all valves are powered off and on standby.
Claims
1. A hydraulic proportional control system for a chamfering machine lifting device, comprising an oil tank (1), characterized in that: The oil tank (1) is arranged on the ground. A servo motor oil pump group (3) is arranged on the oil tank (1). An oil filter (4) is installed outside the servo motor oil pump group (3). A pressure measuring device (5) is arranged at the other end of the oil filter (4). A pipe 1 is arranged at the other end of the pressure measuring device (5). A superimposed hydraulically controlled one-way valve (7) is arranged at the other end of the pipe 1. A lifting oil cylinder (9) is installed outside the superimposed hydraulically controlled one-way valve (7). A proportional pressure valve (12) is also installed outside the oil tank (1).
2. A hydraulic proportional control system for a lifting device of a chamfering machine according to claim 1, characterized in that: The top surface of the oil tank (1) is connected to a second pipeline, and the servo motor oil pump group (3) is connected to the oil tank (1) through the second pipeline. A proportional reversing valve (6) is installed outside the servo motor oil pump group (3), and the proportional reversing valve (6) is installed between the pressure measuring device (5) and the superimposed hydraulic control one-way valve (7). A cooler (11) is also provided on the top surface of the oil tank (1), and a liquid level and liquid temperature sensor (10) is installed outside the cooler (11). The liquid level and liquid temperature sensor (10) is provided on the oil tank (1).
3. A hydraulic proportional control system for a lifting device of a chamfering machine according to claim 2, characterized in that: One end of the superimposed hydraulically controlled one-way valve (7) is connected to two pipes (3), one of which is equipped with an electronic pressure switch (8), which is arranged at one end of the lifting cylinder (9).
4. A hydraulic proportional control system for a lifting device of a chamfering machine according to claim 3, characterized in that: The oil tank (1) is provided with oil, and one end of the second pipe extends into the oil tank (1) through the servo motor oil pump assembly (3).
5. A hydraulic proportional control system for a lifting device of a chamfering machine according to claim 4, characterized in that: The sensing end of the liquid level and liquid temperature sensor (10) extends into the interior of the oil tank (1) and contacts the oil phase.
6. A hydraulic proportional control system for a lifting device of a chamfering machine according to claim 5, characterized in that: An air filter (2) is also provided on the oil tank (1).
7. A hydraulic proportional control system for a lifting device of a chamfering machine according to claim 6, characterized in that: The number of the lifting oil cylinders (9) is two, and they are respectively arranged on both sides of the oil tank (1).
8. A hydraulic proportional control system for a lifting device of a chamfering machine according to claim 7, characterized in that: The oil tank (1) is connected to a branch pipe, and the cooler (11) and the proportional pressure valve (12) are both connected via the branch pipe.