Grease lubrication method and system for multi-connecting-rod hot forming press

Abstract

The invention relates to the technical field of press machine lubrication, in particular to a dry oil lubrication method and system for a multi-connecting-rod hot forming press machine, and the method comprises the following steps: providing a dry oil lubrication system which is connected to a plurality of lubrication point positions of the multi-connecting-rod hot forming press machine, the dry oil lubricating system comprises a lubricating oil supply pump, an electromagnetic valve, a progressive oil distributor, a main pipeline, an auxiliary pipeline and a PLC module. Starting parameters are set in a PLC module, the PLC module identifies working parameters of the multi-connecting-rod hot forming press and the lubricating oil supply pump, and when the working parameters conform to the starting parameters, the PLC module starts the lubricating oil supply pump and the electromagnetic valve; the lubricating oil supply pump outputs lubricating oil, and the progressive oil distributor transmits the lubricating oil to the corresponding main pipeline and the auxiliary pipeline so as to execute lubricating operation. The efficiency of the dry oil lubrication system is improved, and the failure rate of the dry oil lubrication system is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of press lubrication, and in particular to a dry oil lubrication method and system for a multi-link hot forming press. Background Art

[0002] A multi-link hot forming hydraulic press is a stamping machine that uses hydraulic oil as the working medium to drive the cylinder, which drives the connecting rod through the slider to act on the mold. In the factory, lubrication plays an important role in the moving parts of the machine, preventing damage to mechanical components. However, there are many disadvantages in its use: First, lubrication is a tedious task. Traditional lubrication methods often require manual work, and operators need to regularly check and add lubricant, which not only consumes a lot of time but also increases the operator's labor intensity. Second, the lubrication system is prone to failure. Due to the generally harsh operating environment of the hydraulic press and the complexity of the lubrication system itself, the lubrication system is prone to various failures, such as blockages and leaks. These failures not only affect the normal operation of the hydraulic press, but may also cause further damage to the machine. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention provides a grease lubrication method and system for a multi-link hot forming press. This method solves the technical problems of low lubrication efficiency and difficulty in the prior art, improves the efficiency of the grease lubrication system, and reduces the failure rate of the grease lubrication system.

[0004] The present invention provides a dry oil lubrication method for a multi-link thermoforming press, wherein the multi-link thermoforming press includes a body, a hydraulic system, a multi-link mechanism, a main slide, a secondary slide, and a workbench, and includes the following steps: A dry oil lubrication system is provided, which is connected to several lubrication points of a multi-link hot forming press. The dry oil lubrication system includes a lubrication oil supply pump, a solenoid valve, a progressive oil distributor, a main pipeline, a secondary pipeline, and a PLC module; Setting startup parameters in a PLC module, the PLC module identifying operating parameters of the multi-link hot forming press and the lubricating oil supply pump, and starting the lubricating oil supply pump and the solenoid valve when the operating parameters match the startup parameters; The lubricating oil supply pump outputs lubricating oil, and the progressive oil distributor transmits the lubricating oil to the corresponding main pipeline and auxiliary pipeline to perform a lubrication operation.

[0005] A further improvement of the dry oil lubrication method for a multi-link hot forming press of the present invention is that the lubricating oil supply pump includes an oil tank, an oil filter and a pressure relief valve; The lubricating oil is filtered through the oil filter and then enters the oil tank. The pressure relief valve detects the pressure value of the oil tank in real time. When the pressure value of the oil tank exceeds a set threshold range, the lubricating oil is discharged through the pressure relief valve to relieve the pressure.

[0006] A further improvement of the dry oil lubrication method for a multi-link hot forming press of the present invention is that the set threshold range is less than or equal to 10 MPa.

[0007] A further improvement of the dry oil lubrication method of a multi-link hot forming press of the present invention is that it further includes a stroke sensor, the stroke sensor is connected to the main slider, the stroke sensor is connected to the PLC module, and the starting parameter is that the stroke of the main slider is greater than 1000m; The stroke of the main slider is detected by the stroke sensor. When the stroke of the main slider is greater than 1000m, the PLC module starts the lubrication oil supply pump and the solenoid valve.

[0008] A further improvement of the dry oil lubrication method for a multi-link hot forming press of the present invention is that it further includes a first timer, the first timer is connected to the progressive oil separator and the PLC module, and the startup parameter is that the progressive oil separator has not been operated for more than 24 hours; When the first timer counts that the progressive oil separator has not worked for more than 24 hours, the PLC module starts the lubrication oil supply pump and the solenoid valve.

[0009] A further improvement of the dry oil lubrication method for a multi-link hot forming press of the present invention is that it further includes an alarm module, an induction sensor and a second timer, wherein the second timer is connected to the progressive oil distributor; The inductive sensor senses the oil separation frequency of the progressive oil separator, and the second timer calculates the oil pumping time. When the oil separation frequency does not match the set frequency and the oil pumping time does not match the set oil pumping time, the alarm module sends an alarm signal, and the PLC module turns off the lubrication oil supply pump and the solenoid valve.

[0010] A further improvement of the dry oil lubrication method of a multi-link hot forming press of the present invention is that the PLC module includes a touch control screen; The start-up parameters are set through the touch control screen as follows: the stroke of the main slider is greater than 1000m and the progressive oil separator has not been working for more than 24 hours; the set frequency and the set oil pumping time are set through the touch control screen.

[0011] A further improvement of the dry oil lubrication method of a multi-link hot forming press of the present invention is that the oil tank is provided with an oil quantity early warning sensor; When the oil level in the oil tank is less than a set oil level value, the oil level warning sensor sends a warning signal.

[0012] A further improvement of the dry oil lubrication method of a multi-link hot forming press of the present invention is that it further includes a flushing module, wherein the flushing module is connected to the solenoid valve; After the solenoid valve, progressive oil separator, main pipeline and auxiliary pipeline have been in operation for half a year or the alarm module sends an alarm signal, the cleaning hydraulic oil of the flushing module flushes the solenoid valve, progressive oil separator, main pipeline and auxiliary pipeline.

[0013] A grease lubrication system for a multi-link hot forming press, the grease lubrication system being configured to perform the grease lubrication method described above, comprising: A lubricating oil supply pump, the oil pump comprising an oil tank, a filter and a pressure relief valve; Solenoid valves, wherein there are multiple solenoid valves, several of which are arranged in parallel, and several of which are connected to the oil pump; A progressive oil separator, wherein the progressive oil separator is provided in a one-to-one correspondence with the solenoid valve; A main pipeline, wherein a first end of the main pipeline is connected to the progressive oil distributor, and a second end of the main pipeline is connected to a plurality of branch pipelines; A PLC module, the PLC module is controlled and connected to the lubrication oil supply pump and the solenoid valve; a first timer connected to the progressive oil separator and the PLC module, for detecting an inoperative time of the progressive oil separator; a second timer connected to the progressive oil separator and the PLC module, for detecting the oil pumping time of the progressive oil separator; an inductive sensor connected to the progressive oil separator and the PLC module to detect the oil separation frequency of the progressive oil separator; A stroke sensor, connected to the PLC module, for detecting the stroke of the main slider; An alarm module is connected to the PLC module and is used to send an alarm signal.

[0014] When the oil level in the oil tank is too high, the oil tank warning sensor will send out a warning signal to remind the staff to add oil to the oil tank to avoid idling of the motor and oil pump, so as to protect the lubricating oil supply pump and prevent damage. The entire oil lubrication system adopts intelligent control, which can automatically monitor and adjust various parameters to ensure stable lubrication of the multi-link hot forming press, and at the same time greatly reduce the labor intensity of the staff and improve production efficiency. By monitoring and controlling the stroke of the main slider in real time, the PLC module can ensure that the lubrication system works when it is most needed, avoiding equipment performance degradation or damage caused by insufficient or excessive lubrication. When the first timer counts that the progressive oil separator has not worked for more than 24 hours, the PLC module starts the lubricating oil supply pump and the solenoid valve. It prevents the progressive oil separator from being blocked or deteriorating due to long-term non-operation, ensures the continuous and stable operation of the progressive oil separator, and effectively reduces the risk of production interruption due to equipment failure; the alarm module quickly issues a warning to alert the operator, facilitating the staff to detect abnormal conditions in time, avoiding blockage of the progressive oil separator and resulting in increased pressure in the dry oil lubrication system, and can shut down the lubrication supply pump and solenoid valve in time to avoid further damage that may be caused by continued operation in a faulty state, effectively preventing equipment wear and failure caused by poor lubrication, shortening the time for fault discovery and handling, and improving the maintenance efficiency and operational safety of the equipment; the flushing module can clean the key components in the dry oil lubrication system regularly or on demand, effectively remove oil stains and impurities accumulated due to long-term operation, and prevent abnormal system pressure caused by blockage, so as to ensure the long-term stable operation of the dry oil lubrication system, further improving the reliability and service life of the dry oil lubrication system.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of a dry oil lubrication system of a multi-link hot forming press provided by the present invention.

[0018] Reference numerals: 1. Oil pump; 2. Motor; 3. Pressure relief valve; 4. Oil level warning sensor; 5. Solenoid valve; 6. Progressive oil distributor; 7. Induction sensor; 8. Main line; 9. Secondary line; 10. Oil outlet. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0020] The following combination Figure 1 The present invention describes a dry oil lubrication method for a multi-link hot forming press, comprising the following steps: A dry oil lubrication system is provided, which is connected to several lubrication points of a multi-link hot forming press. The dry oil lubrication system includes a lubrication oil supply pump 1, a solenoid valve 5, a progressive oil distributor 6, a main line 8, a secondary line 9, and a PLC module; Setting startup parameters in a PLC module, the PLC module identifies the operating parameters of the multi-link hot forming press and the lubricating oil supply pump 1, and when the operating parameters match the startup parameters, the PLC module starts the lubricating oil supply pump 1 and the solenoid valve 5; The lubricating oil supply pump 1 outputs lubricating oil, and the progressive oil distributor 6 transmits the lubricating oil to the corresponding main pipeline 8 and auxiliary pipeline 9 to perform a lubrication operation.

[0021] The multi-link hot forming press includes a fuselage, a hydraulic system, a multi-link mechanism, a main slider, a secondary slider and a workbench, wherein the connection points of the multi-link mechanism, the secondary slider and the main slider form lubrication points, and the end of the secondary oil pipe of the dry oil lubrication system forms an oil outlet 10, and the oil outlet 10 corresponds one-to-one to each lubrication point.

[0022] In a specific implementation case, according to different lubrication points, the dry oil lubrication system has three solenoid valves 5, wherein the progressive oil separator 6 connected to the first solenoid valve 5 is used to supply oil to the lubrication point of the corresponding main slider, the progressive oil separator 6 connected to the second solenoid valve 5 is used to supply oil to the lubrication point of the corresponding auxiliary slider, and the progressive oil separator 6 connected to the third solenoid valve 5 is used to supply oil to the lubrication point at the connection point of the corresponding multi-link mechanism.

[0023] Furthermore, the lubricating oil supply pump 1 includes a motor 2, an oil pump 1, an oil tank, an oil filter, a pressure relief valve 3 and an oil quantity warning sensor 4; the lubricating oil enters the oil tank after being filtered through the oil filter, the motor 2 provides power to the oil pump 1, and the oil pump 1 outputs the lubricating oil in the oil tank to the outside; the pressure relief valve 3 detects the pressure value of the oil tank in real time. When the pressure value of the oil tank exceeds the set threshold range, the lubricating oil is discharged through the pressure relief valve 3 to relieve the pressure, thereby avoiding damage to the dry oil lubrication system when the pressure value is too high; the oil tank warning sensor detects the lubricating oil stock in the oil tank in real time. When the lubricating oil is lower than the set oil quantity value, the oil tank warning sensor sends a warning signal to remind the staff to add lubricating oil to the oil tank, avoid idling of the motor 2 and the oil pump 1, so as to protect the lubricating oil supply pump 1 and prevent damage; the entire dry oil lubrication system adopts intelligent control, which can automatically monitor and adjust various parameters to ensure stable lubrication of the multi-link hot forming press, while greatly reducing the labor intensity of the staff and improving production efficiency.

[0024] Preferably, the set oil level value may be 1 cm of the lubricating oil level.

[0025] Preferably, when the oil tank warning sensor detects that the liquid level of the lubricating oil is lower than 1 mm, the control motor 2 and the oil pump 1 are turned off.

[0026] Preferably, the set threshold range is less than or equal to 10 MPa. When the pressure exceeds 10 MPa, the pressure relief valve 3 automatically releases pressure to control the pressure in the main pipeline 8 and the auxiliary pipeline 9 to prevent excessive pressure, pipe burst, and oil leakage.

[0027] Furthermore, it also includes a stroke sensor, which is connected to the main slider, and the stroke sensor is connected to the PLC module. The starting parameter is that the stroke of the main slider is greater than 1000m; the stroke of the main slider is detected by the stroke sensor, and when the stroke of the main slider is greater than 1000m, the PLC module starts the lubrication oil supply pump 1 and the solenoid valve 5.

[0028] Preferably, when the stroke of the main slider is greater than 1000 m, the solenoid valves 5 are opened in sequence to lubricate the various lubrication points of the multi-link hot forming hydraulic press in sequence.

[0029] Specifically, the control method of the solenoid valve 5 also includes judging by the machine running a specific action. When the specific action is running, the corresponding solenoid valve 5 is opened. The priority of opening the solenoid valve 5 when running a specific action is high. When the specific action is not executed, after detecting that the stroke of the main slider is greater than 1000m, the overall lubrication will begin in sequence.

[0030] Ideally, when the main slider stroke reaches or exceeds a preset value, the dry oil lubrication system can respond quickly and provide the necessary lubrication to the equipment, effectively reducing equipment wear and failure rates and extending the equipment's service life. By monitoring and controlling the main slider stroke in real time, the PLC module ensures that the lubrication system functions when it is most needed, avoiding equipment performance degradation or damage caused by insufficient or excessive lubrication. The stroke sensor also enhances the intelligence level of the equipment. Through the precise control of the PLC module, automated management of the lubrication process is achieved, reducing the possibility of manual intervention and misoperation, and further improving production efficiency and product quality.

[0031] Furthermore, the system includes a first timer connected to the progressive oil separator 6 and the PLC module, with the activation parameter being when the progressive oil separator 6 has not operated for more than 24 hours. When the first timer indicates that the progressive oil separator 6 has not operated for more than 24 hours, the PLC module activates the lubrication oil supply pump 1 and the solenoid valve 5. This prevents blockage or functional degradation of the progressive oil separator 6 due to prolonged inactivity, ensures its continued stable operation, and effectively reduces the risk of production interruptions due to equipment failure. Through intelligent monitoring and control methods, it enables real-time monitoring and timely response to equipment status, further improving production efficiency and equipment reliability.

[0032] Furthermore, it also includes an alarm module, an inductive sensor 7 and a second timer, the second timer is connected to the progressive oil separator 6; the inductive sensor 7 senses the oil separation frequency of the progressive oil separator 6, and the second timer calculates the oil pumping time. When the oil separation frequency does not match the set frequency and the oil pumping time does not match the set oil pumping time, the alarm module sends an alarm signal, and the PLC module turns off the lubricating oil supply pump 1 and the solenoid valve 5, which can detect the abnormal operation of the progressive oil separator 6 in time, such as oil separation frequency deviation or insufficient oil pumping time, and quickly issue a warning through the alarm module to remind the operator to pay attention, so that the staff can detect abnormal conditions in time and avoid blockage of the progressive oil separator 6, which leads to an increase in the pressure of the dry oil lubrication system. The lubricating oil supply pump 1 and the solenoid valve 5 can be turned off in time to avoid further damage that may be caused by continued operation in a faulty state, effectively preventing equipment wear and failure due to poor lubrication, shortening the time for fault discovery and processing, and improving the maintenance efficiency and operation safety of the equipment.

[0033] Preferably, different models of progressive oil separators 6 have different capacities to control the output of each movement. For example, the current oil storage capacity of the progressive oil separator 6 is 10 mL, and the amount of oil injected into the progressive oil separator 6 each time is 2 mL. This requires the progressive oil separator 6 to run 5 times. After running 5 times, the demand for lubricating oil replacement is met.

[0034] Preferably, the blockage of the main pipeline 8 and / or the auxiliary pipeline 9 is determined by the pump oil time. According to the normal use, the normal lubrication needs 100 seconds. When the lubrication time exceeds 300 seconds and the oil amount of lubrication still cannot meet the use requirement, it is determined that the main pipeline 8 and / or the auxiliary pipeline 9 is blocked.

[0035] Specifically, the PLC module includes a touch control screen. The touch control screen is used to set the stroke of the main slider to be greater than 1000m and the working time of the progressive oil distributor 6 to be more than 24h, and set the frequency and the pump oil time.

[0036] Specifically, the flushing module includes a flushing tank, a flushing filter and a flushing pump, and the flushing module is connected to the electromagnetic valve 5. When the electromagnetic valve 5, the progressive oil distributor 6, the main pipeline 8 and the auxiliary pipeline 9 have been running for half a year or the alarm module sends an alarm signal, the flushing liquid hydraulic oil of the flushing module flushes the electromagnetic valve 5, the progressive oil distributor 6, the main pipeline 8 and the auxiliary pipeline 9.

[0037] Preferably, the flushing module can periodically or on-demand clean the key components in the dry oil lubrication system, effectively remove the oil dirt and impurities accumulated due to long-time running, prevent the system pressure abnormality caused by blockage, ensure the long-term stable running of the dry oil lubrication system, and further improve the reliability and service life of the dry oil lubrication system.

[0038] Preferably, after the lubrication of the dry oil lubrication system is completed, the electromagnetic valve 5 is controlled to be opened to release the pressure, so that the residual pressure in the dry oil lubrication system is prevented, and the dry oil is prevented from hardening.

[0039] Preferably, when the air temperature is higher than 30℃, the 000 extreme pressure lithium-based grease lubricating oil is used, otherwise the 00 lithium-based grease lubricating oil is used, and the flushing tank is filled with the 46 hydraulic oil as the flushing liquid hydraulic oil.

[0040] A dry oil lubrication system for a multi-link hot forming press, the dry oil lubrication system is used to perform the dry oil lubrication method described above, including: a lubricating oil supply pump 1, the oil pump 1 including an oil tank, a filter and a pressure relief valve 3; a solenoid valve 5, the solenoid valve 5 having a plurality of solenoid valves 5, several of the solenoid valves 5 are arranged in parallel, and several of the solenoid valves 5 are connected to the oil pump 1; a progressive oil separator 6, the progressive oil separator 6 is arranged in a one-to-one correspondence with the solenoid valve 5; a main line 8, the first end of the main line 8 is connected to the progressive oil separator 6, and the second end of the main line 8 is connected to several branch lines; a PLC module, the PLC module is controlled and connected to the lubricating oil supply pump 1 and the solenoid valve 5; a first timer, The first timer is connected to the progressive oil separator 6 and the PLC module to detect the non-working time of the progressive oil separator 6; the second timer is connected to the progressive oil separator 6 and the PLC module to detect the oil pumping time of the progressive oil separator 6; the inductive sensor 7 is connected to the progressive oil separator 6 and the PLC module to detect the oil separation frequency of the progressive oil separator 6; the stroke sensor is connected to the PLC module, and the stroke sensor is used to detect the stroke of the main slider; the alarm module is connected to the PLC module, and the alarm module is used to send an alarm signal.

[0041] In a specific implementation case, the ambient temperature is higher than 30°C, the oil tank of the lubricating oil supply pump 1 is filled with No. 000 extreme pressure lithium grease lubricant, and the flushing oil tank is filled with No. 46 hydraulic oil; The PLC module detects that the stroke of the main slide is greater than 1000 meters and starts lubrication operation. After starting, the parameters are set through the touch control screen; The PLC module drives the solenoid valve 5 corresponding to the lubrication point and closes the solenoid valves 5 of other lubrication oil circuits. After the solenoid valve 5 is opened for 3 seconds, the lubrication oil supply pump 1 is started to supply oil; The first timer, the second timer, the inductive sensor 7, and the stroke sensor detect the data of the dry oil lubrication system in real time to ensure that the progressive oil distributor 6 outputs a fixed amount of oil into the lubrication point each time it runs. For example, if the lubrication point requires 60 ml of lubricating oil, the progressive oil distributor 6 outputs 10 ml each time. After 6 runs are detected, the lubrication is completed. After completion, stop the operation of the lubricating oil supply pump 1, but keep the solenoid valve 5 open to release the residual pressure in the main pipeline 8 and the auxiliary pipeline 9 to prevent the lubricating oil from aging and calcification due to long-term pressure, which may cause blockage; After lubrication starts, the second timer records the time. When the time exceeds 2 times the normal lubrication time, and the oil outlet 10 is still not able to reach the amount of lubricating oil pumped out by the corresponding auxiliary pipeline 9 of the progressive oil distributor 6, the alarm module sends an alarm signal, prompting the dry oil lubrication system to stop after half an hour, reminding the staff to deal with the residual materials in the dry oil lubrication system; after the fault, you can try to flush the module. If it can be detected that the oil outlet point pumps out cleaning hydraulic oil and the alarm signal disappears, the fault flushing is successful. If the alarm signal does not disappear, perform maintenance according to the prompts on the touch control screen; After the alarm module controls the shutdown, the timer starts. After at least half an hour, the staff will check that the dry oil lubrication system has been repaired and inspected. Only then can the dry oil lubrication system be reset and continue to work. After the dry oil lubrication system has been used for half a year, it needs to be automatically flushed. The PLC module will automatically start the flushing pump of the flushing module to flush the lubricating oil in the progressive oil separator 6, the main line 8, and the auxiliary line 9 with No. 46 hydraulic oil to clean out the aged lubricating oil and prevent blockage. After about 2 minutes of cleaning, all the grease in the lubricating oil in the progressive oil separator 6, the main line 8, and the auxiliary line 9 will be flushed clean. Then the lubricating oil supply pump 1 will automatically replenish the lubricating oil until the lubricating oil appears at the oil outlet 10. When it is detected that the lubricating oil in the oil tank is empty, a prompt will be given to add lubricating oil. The filling must be completed within 1 hour after the prompt, otherwise the machine will shut down after 1 hour.

[0042] The present invention ensures that all lubrication points are lubricated. The dry oil lubrication system has fully automatic control of lubrication, and a fault point prompt is given after a fault occurs. The structure is relatively simple, the cost is low, and it is easy to promote and use. The dry oil lubrication system is simple to use, operates fully automatically, and automatically prompts when a fault occurs, thereby improving lubrication efficiency and maintenance efficiency.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A dry oil lubrication method for a multi-link thermoforming press, wherein the multi-link thermoforming press comprises a machine body, a hydraulic system, a multi-link mechanism, a main slide, a secondary slide, and a workbench, wherein: The steps include: A dry oil lubrication system is provided, which is connected to several lubrication points of a multi-link hot forming press. The dry oil lubrication system includes a lubrication supply pump, a solenoid valve, a progressive oil distributor, a main pipeline, a secondary pipeline, and a PLC module; Setting startup parameters in a PLC module, the PLC module identifying operating parameters of the multi-link hot forming press and the lubricating oil supply pump, and starting the lubricating oil supply pump and the solenoid valve when the operating parameters match the startup parameters; The lubricating oil supply pump outputs lubricating oil, and the progressive oil distributor transmits the lubricating oil to the corresponding main pipeline and auxiliary pipeline to perform a lubrication operation.

2. The dry oil lubrication method for a multi-link hot forming press according to claim 1, characterized in that: The lubricating oil supply pump includes an oil tank, an oil filter and a pressure relief valve; The lubricating oil is filtered through the oil filter and then enters the oil tank. The pressure relief valve detects the pressure value of the oil tank in real time. When the pressure value of the oil tank exceeds a set threshold range, the lubricating oil is discharged through the pressure relief valve to relieve the pressure.

3. The dry oil lubrication method for a multi-link hot forming press according to claim 2, characterized in that: The set threshold range is less than or equal to 10 MPa.

4. The dry oil lubrication method for a multi-link hot forming press according to claim 1, characterized in that: It also includes a stroke sensor, the stroke sensor is connected to the main slider, the stroke sensor is connected to the PLC module, and the starting parameter is that the stroke of the main slider is greater than 1000m; The stroke of the main slider is detected by the stroke sensor. When the stroke of the main slider is greater than 1000m, the PLC module starts the lubrication oil supply pump and the solenoid valve.

5. The dry oil lubrication method for a multi-link hot forming press according to claim 4, characterized in that: The invention also includes a first timer, the first timer is connected to the progressive oil separator and the PLC module, and the startup parameter is that the progressive oil separator has not been operated for more than 24 hours; When the first timer counts that the progressive oil separator has not worked for more than 24 hours, the PLC module starts the lubrication oil supply pump and the solenoid valve.

6. The dry oil lubrication method for a multi-link hot forming press according to claim 5, characterized in that: It also includes an alarm module, an induction sensor and a second timer, wherein the second timer is connected to the progressive oil distributor; The inductive sensor senses the oil separation frequency of the progressive oil separator, and the second timer calculates the oil pumping time. When the oil separation frequency does not match the set frequency and the oil pumping time does not match the set oil pumping time, the alarm module sends an alarm signal, and the PLC module turns off the lubrication oil supply pump and the solenoid valve.

7. The dry oil lubrication method for a multi-link hot forming press according to claim 6, characterized in that: The PLC module includes a touch control screen; The start-up parameters are set through the touch control screen as follows: the stroke of the main slider is greater than 1000m and the progressive oil separator has not been working for more than 24 hours; the set frequency and the set oil pumping time are set through the touch control screen.

8. The dry oil lubrication method for a multi-link hot forming press according to claim 2, characterized in that: The fuel tank is provided with an oil level early warning sensor; When the oil level in the oil tank is less than a set oil level value, the oil level warning sensor sends a warning signal.

9. The dry oil lubrication method for a multi-link hot forming press according to claim 6, characterized in that: Also included is a flushing module, the flushing module being connected to the solenoid valve; After the solenoid valve, progressive oil separator, main pipeline and auxiliary pipeline have been in operation for half a year or the alarm module sends an alarm signal, the cleaning hydraulic oil of the flushing module flushes the solenoid valve, progressive oil separator, main pipeline and auxiliary pipeline.

10. A dry oil lubrication system for a multi-link hot forming press, characterized in that: The grease lubrication system is used to perform the grease lubrication method according to any one of claims 1 to 9, comprising: A lubricating oil supply pump, the oil pump comprising an oil tank, a filter and a pressure relief valve; Solenoid valves, wherein there are multiple solenoid valves, several of which are arranged in parallel, and several of which are connected to the oil pump; A progressive oil separator, wherein the progressive oil separator is provided in a one-to-one correspondence with the solenoid valve; A main pipeline, wherein a first end of the main pipeline is connected to the progressive oil distributor, and a second end of the main pipeline is connected to a plurality of branch pipelines; A PLC module, the PLC module is controlled and connected to the lubrication oil supply pump and the solenoid valve; a first timer connected to the progressive oil separator and the PLC module, for detecting an inoperative time of the progressive oil separator; a second timer connected to the progressive oil separator and the PLC module, for detecting the oil pumping time of the progressive oil separator; an inductive sensor connected to the progressive oil separator and the PLC module to detect the oil separation frequency of the progressive oil separator; A stroke sensor, connected to the PLC module, for detecting the stroke of the main slider; An alarm module is connected to the PLC module and is used to send an alarm signal.

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