Oil press

Abstract

The invention relates to the technical field of hydraulic machines, and particularly discloses an oil press which comprises a liquid filling mechanism and a hydraulic mechanism connected with the liquid filling mechanism. The hydraulic mechanism comprises a main oil cylinder, a base, a top beam and a movable plate installed between the base and the top beam, a plurality of guide columns are installed between the base and the top beam, the movable plate is installed on the guide columns in a reciprocating motion mode, and a telescopic rod body is further arranged at the end, close to the base, of the movable plate. The telescopic rod body is used for assisting in driving the movable plate to reciprocate between the base and the top beam; the main oil cylinder is installed below the base, the guide column is of a cavity structure and communicated with the main oil cylinder, the liquid filling mechanism is used for rapidly filling liquid into the main oil cylinder, the main oil cylinder drives pressure in the guide column to rapidly rise after being filled with the liquid, and the pressure in the guide column rises to drive the movable plate to get close to the top beam to conduct compression machining operation on a product to be machined.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic presses, and in particular discloses an oil press. Background Art

[0002] The hydraulic press is an important industrial equipment used for high-precision compression processing of materials. There are some shortcomings in the design of traditional presses. For example, the upper cylinder and lower pressure structure of the traditional hydraulic press has low structural utilization, the main cylinder is placed on the top and takes up space, and there is a safety hazard of the piston slipping; the traditional hydraulic press has a slow working stage, and the working time generally takes up half of the product molding cycle. For users who have high requirements for the production efficiency of the hydraulic press, the production efficiency of the traditional hydraulic press is low; the overall structure of the traditional hydraulic press is in a separated state, and the structural layout in the separated state will take up more space, which is not very friendly to the utilization of the user's site. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, an object of the present invention is to provide a hydraulic press.

[0004] The hydraulic press of the present invention comprises a filling mechanism and a hydraulic mechanism used in conjunction with the filling mechanism; the hydraulic mechanism comprises a main oil cylinder, a base, a top beam and a movable plate installed between the base and the top beam, a plurality of guide pillars are installed between the base and the top beam, and the movable plate is reciprocatingly installed on the plurality of guide pillars, the movable plate is also provided with a telescopic rod body at one end of the movable plate close to the base, and the telescopic rod body is used to assist in driving the movable plate to reciprocate between the base and the top beam; the main oil cylinder is installed below the base, the guide pillar is a cavity structure and is connected with the main oil cylinder, the filling mechanism is used to fill the main oil cylinder with liquid, after the main oil cylinder is filled with liquid, the pressure in the guide pillar increases rapidly, and the increase in the pressure in the guide pillar drives the movable plate to approach the top beam to perform compression processing operation on the product to be processed, after the processing is completed, the filling mechanism stops filling and relieves the pressure and flows back, the pressure in the main oil cylinder and the guide pillar cavity is gradually released, and the movable plate returns to the initial position with the assistance of the telescopic rod body, and performs the next processing operation.

[0005] Through the synergy of the filling mechanism and the hydraulic mechanism, the movable plate is driven by rapid filling to perform efficient compression processing. At the same time, the telescopic rod is used to assist the movable plate to smoothly reset, thereby improving processing accuracy and efficiency. In specific implementation, the filling mechanism quickly fills the main oil cylinder with liquid, the pressure in the main oil cylinder plug cavity rises and is transmitted to the guide column of the cavity structure, driving the movable plate to move toward the top beam for product compression processing; after processing is completed, the filling mechanism stops filling and starts pressure relief reflux, the pressure in the main oil cylinder and the guide column is released, and the telescopic rod assists the movable plate to smoothly return to the initial position to prepare for the next processing.

[0006] The main oil cylinder of the hydraulic press is placed at the bottom, and the stamping work is performed from bottom to top. This structure can firstly reduce the height of the machine body and shorten the distance to the main oil tank, reduce the floor space and improve the response speed of the oil circuit; secondly, it can avoid the safety hazard caused by the downward movement of the piston due to its own weight.

[0007] The hydraulic press also includes a lifting mechanism, which is arranged on a base. The lifting mechanism includes a driving member and a lifting rod body connected to an output end of the driving member. Both the base and the movable plate are provided with interconnected lifting holes. The driving member drives the lifting rod body to reciprocate in the lifting holes on the base and the movable plate to eject the processed product placed on the movable plate from the movable plate.

[0008] During the processing stage, the filling mechanism quickly fills the main cylinder with liquid, pushing the movable plate to move smoothly along the guide column to the top beam, and performs precise compression processing on the workpiece placed on the movable plate. After the processing is completed, the filling mechanism stops filling and starts the pressure relief process, and the movable plate is smoothly reset with the assistance of the telescopic rod. The jacking mechanism added to this press has a driving part that accurately controls the reciprocating movement of the jacking rod in the jacking hole that passes through the base and the movable plate. After the processing is completed, the workpiece can be automatically lifted off the movable plate to facilitate the removal of subsequent workpieces and the placement of new workpieces, which greatly simplifies the manual operation process, reduces manual intervention, and improves operation safety and continuity. This design not only ensures processing accuracy and efficiency, but also brings users a more convenient and efficient production experience through a high degree of automation and intelligence.

[0009] The hydraulic press also includes a sub-cylinder body installed inside the main oil cylinder. The volume of the sub-cylinder body is smaller than that of the main oil cylinder. The sub-cylinder body is used to quickly push the movable plate upward in the initial stage; the sub-cylinder body is connected to the main oil cylinder through a hydraulic pipeline, and the sub-cylinder body is connected to the guide column. The filling mechanism outputs the hydraulic oil to the sub-cylinder body. The hydraulic pressure of the sub-cylinder body rises to drive the pressure in the guide column to rise. The pressure increase in the guide column cavity drives the movable plate to approach the top beam to perform compression processing operations on the product to be processed.

[0010] The filling mechanism also includes a back-pressure valve group. The auxiliary cylinder body is provided with a control valve connected to the back-pressure valve group. The filling mechanism fills the auxiliary cylinder body with liquid. When the pressure in the auxiliary cylinder body cavity rises to the pressure value set by the back-pressure valve group, the control valve of the auxiliary cylinder body opens, and the hydraulic oil is filled into the main cylinder through the auxiliary cylinder body and the auxiliary cylinder body filling channel is closed. The pressure in the main cylinder cavity rises rapidly, driving the movable plate to approach the top beam to perform compression processing operations on the product to be processed.

[0011] The hydraulic system of this oil press innovatively uses the logic back pressure valve group as the main cylinder pressure switch, and a sub-cylinder body is designed inside the main cylinder body. When the filling mechanism outputs the hydraulic oil to the sub-cylinder body, the movable plate is pushed upward quickly. When the pressure in the sub-cylinder body cavity rises to the set pressure of the logic back pressure valve group, the control valve opens, the main oil cylinder begins to fill quickly and closes the sub-cylinder body channel. The main oil cylinder then quickly increases the pressure. This pressure increase method abandons the traditional slow-speed process stage and significantly improves the production efficiency of the oil press. It is particularly suitable for mass production processes such as printing, embossing, and shallow drawing.

[0012] The volume of the auxiliary cylinder is smaller than that of the main cylinder. Due to the small volume of the auxiliary cylinder, the filling mechanism can fill it with enough hydraulic oil in a short time, so that the auxiliary cylinder can be quickly pressurized. This helps to quickly push the movable plate upward in the initial stage of processing and start the entire processing process, thereby shortening the start-up time and improving production efficiency. When the pressure in the auxiliary cylinder reaches the preset pressure value of the back pressure valve group, the control valve automatically opens to allow hydraulic oil to flow from the auxiliary cylinder to the main cylinder. This design ensures a smooth transition from the auxiliary cylinder to the main cylinder, avoiding equipment shock and instability caused by instantaneous high pressure. At the same time, through the adjustment of the back pressure valve group, the pressure change during the processing can be accurately controlled, further improving the processing accuracy. In the early stage of processing, using a small-volume auxiliary cylinder for rapid pressure increase and startup can reduce unnecessary energy consumption. As the processing progresses, the main cylinder begins to dominate the processing process. At this time, the auxiliary cylinder has completed its operating task and no longer requires additional energy input. This design helps to achieve energy-saving and efficient production goals.

[0013] An elastic member is provided at the bottom of the guide column cavity, and the elastic member is used to assist the movable plate to return to the initial position, so as to prevent the movable plate from shaking or deflecting due to pressure relief, thereby improving the processing accuracy.

[0014] During the processing, the movable plate moves smoothly along the guide column driven by the hydraulic system, and performs precise compression processing on the workpiece placed on it. When the processing is completed, the filling mechanism stops filling and the system begins to release pressure. At this time, the elastic parts (such as springs or elastic gaskets, etc.) at the bottom of the guide column cavity begin to play a role. They can help the movable plate return to its initial position smoothly, effectively preventing shaking or deviation caused by pressure relief. This design not only ensures the precise positioning of the movable plate during the processing, but also improves the processing accuracy and stability.

[0015] The hydraulic press also includes a control center, which includes an emergency return device. A pressure sensor is provided on the hydraulic mechanism. When the pressure sensor detects that the pressure of the hydraulic mechanism is abnormal or the equipment fails to operate, the control center immediately starts the emergency return device, and the movable plate stops the mold closing action and returns to the initial position. After returning to the initial position, the lifting mechanism completes a processed product ejection action and ends the operation state of the hydraulic press.

[0016] During the processing, the pressure sensor on the hydraulic mechanism detects the pressure status of the system in real time. Once abnormal pressure or equipment operation failure is detected, the control center responds immediately and starts the emergency return device. This device can quickly cut off the power source of the hydraulic system, stop the current mold clamping action of the movable plate, and smoothly return to the initial position. This design effectively prevents equipment damage or personal injury caused by failures and ensures the safety of the processing process. After the movable plate returns to the initial position, the lifting mechanism automatically starts to eject the processed product from the movable plate for subsequent operations. At the same time, the control center issues a command to end the operation of the hydraulic press to prevent the equipment from continuing to operate in a faulty state. This process ensures that even in the event of a failure, the equipment can be quickly and safely stopped and ready for troubleshooting or repair.

[0017] The control center also includes a two-hand button, which is used to start and close the hydraulic press. A safety grating is installed on the hydraulic mechanism. When the safety grating is blocked, the safety grating sends a warning signal and the movable plate stops moving. The movable plate can continue to work only when the two-hand button is pressed again.

[0018] The design of the two-hand button requires the operator to press the button with both hands at the same time when starting or continuing the processing process, thus avoiding the risk of misoperation that may be caused by one-handed operation. This design effectively prevents accidental startup caused by operator negligence or fatigue, and improves the safety of the equipment. At the same time, the safety grating installed on the hydraulic mechanism serves as another line of defense, which can immediately issue a warning signal when it detects that there is an object (such as the operator's hand or other body parts) blocking it. At this time, even if the operator has pressed the two-hand button, the movable plate will stop moving immediately, preventing crushing or collision accidents caused by accidental blocking. The movable plate can only continue to work when the operator removes the obstruction and presses the two-hand button again. This design ensures the safety and reliability of the equipment during the processing process.

[0019] The hydraulic press includes a temperature control system for real-time monitoring and adjusting the temperature of the hydraulic oil to avoid equipment damage and reduced processing accuracy due to excessively high or low oil temperature.

[0020] The temperature control system includes a temperature monitoring module, a cooling device, and a heating device; a temperature sensor is installed in the hydraulic system to monitor the temperature of the hydraulic oil in real time. The temperature sensor can be arranged in key locations such as the main cylinder, auxiliary cylinder, hydraulic pipeline, and oil tank. When the hydraulic oil temperature exceeds the set upper limit, the cooling device automatically starts. The cooling device can be an air-cooled radiator or a water-cooled heat exchanger, and the specific choice depends on the working environment and heat dissipation requirements of the equipment. When the hydraulic oil temperature is lower than the set lower limit, the heating device automatically starts. The heating device can be an electric heater or a heat exchanger, which is used to preheat the hydraulic oil in a low temperature environment.

[0021] A sliding sleeve is also provided at the connection between the movable plate and the guide column. The sliding sleeve is made of wear-resistant material and is used to reduce friction between the movable plate and the guide column, reduce wear, ensure stable reciprocating movement of the movable plate, and reduce noise and vibration during reciprocating movement.

[0022] A vibration elimination device is also provided at the bottom of the hydraulic mechanism. The vibration elimination device is started after the movable plate completes a compression processing operation and returns to the initial position. The vibration elimination device eliminates the residual stress between the movable plate and the guide column by generating tiny vibrations, thereby improving the accuracy and stability of the next processing.

[0023] The vibration elimination device should be designed to be tightly connected to the bottom of the hydraulic mechanism to ensure that it can generate vibration stably. The device should contain a vibration source (such as an electromagnetic vibrator, a pneumatic vibrator, etc.) to control the frequency, amplitude, and time of the vibration. The vibration parameters of the vibration elimination device should be set reasonably according to the specific conditions of the equipment and the processing requirements. The vibration frequency and amplitude should be moderate to ensure that the residual stress can be effectively eliminated while avoiding excessive impact and wear on the equipment. The vibration time should also be adjusted according to the processing cycle and the equipment status to ensure the optimization of the elimination effect.

[0024] A nano-filter layer is installed in the guide column cavity, which automatically absorbs metal debris by using the flow of hydraulic oil. A fiber-optic micro-leakage sensor is installed at the connection between the guide column and the main oil cylinder. The fiber-optic micro-leakage sensor is used to monitor oil leakage in real time and trigger an alarm. The nano-filter layer and the fiber-optic micro-leakage sensor can extend the hydraulic oil replacement cycle, reduce maintenance costs, and prevent sudden leakage accidents.

[0025] Magnetorheological fluid is injected into the sliding shell, and an electromagnetic coil is embedded on the surface of the guide column. During the pressing process, the viscosity of the magnetorheological fluid is changed by controlling the current intensity to achieve dynamic locking of the movable plate, eliminate micro-displacement at the moment of pressing, and improve the processing accuracy to micron level.

[0026] The inner wall of the guide column cavity is designed with a spiral damping groove, which is used to destroy the fluid resonance frequency. When the guide column is used as a hydraulic channel, the flow of high-pressure oil may cause resonance, affecting the processing accuracy.

[0027] Beneficial effects of the present invention: The present invention uses a precisely designed oil press and the synergistic effect of the liquid filling mechanism and the hydraulic mechanism to achieve fast liquid filling to drive the movable plate for efficient compression processing, and the telescopic rod assists the movable plate to reset smoothly. The elastic parts at the bottom of the guide column cavity, the vibration elimination device and the safety design of the control center jointly ensure the processing accuracy, stability and safety. The main oil cylinder is placed downward to improve the response speed and safety of the oil circuit. The integrated oil circuit block is connected to the oil cylinder to reduce leakage points, and the logic back pressure valve group and the auxiliary cylinder body are used to achieve rapid pressure increase, which significantly improves production efficiency. At the same time, the emergency return device and the jacking device enhance the safety and operating efficiency of the equipment. The overall structure is compact and small, which reduces the size, weight and production cost of the equipment, and provides users with an economical, efficient and fast oil press. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the hydraulic mechanism of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the base and the movable plate of the present invention;

[0031] Figure 4 is a cross-sectional view of the master cylinder of the present invention;

[0032] Figure 5 It is a cross-sectional view of the guide post of the present invention.

[0033] Reference numerals include:

[0034] 1. Liquid filling mechanism; 2. Hydraulic mechanism; 3. Main oil cylinder; 4. Base; 5. Top beam; 6. Movable plate; 7. Guide column; 8. Telescopic rod body; 9. Lifting mechanism; 11. Driving part; 12. Lifting rod body; 13. Lifting hole; 14. Auxiliary cylinder body; 15. Back pressure valve group; 16. Control valve; 17. Elastic part; 18. Control center; 19. Emergency return device; 21. Pressure sensor; 22. Two-hand button; 23. Safety grating; 24. Temperature control system; 25. Sliding sleeve; 26. Vibration elimination device; 27. Spiral damping groove. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0036] See also Figures 1 to 5As shown, a hydraulic press of the present invention comprises a filling mechanism 1 and a hydraulic mechanism 2 used in conjunction with the filling mechanism 1; the hydraulic mechanism 2 comprises a main oil cylinder 3, a base 4, a top beam 5 and a movable plate 6 installed between the base 4 and the top beam 5, a plurality of guide pillars 7 are installed between the base 4 and the top beam 5, the movable plate 6 is reciprocatingly installed on the plurality of guide pillars 7, and a telescopic rod body 8 is further provided at one end of the movable plate 6 close to the base 4, the telescopic rod body 8 is used to assist in driving the movable plate 6 to reciprocate between the base 4 and the top beam 5; the main oil cylinder 3 is installed under the base 4. The guide column 7 is a cavity structure and is connected with the main oil cylinder 3. The filling mechanism 1 is used to quickly fill the main oil cylinder 3 with liquid. After the main oil cylinder 3 is filled with liquid, the pressure in the guide column 7 is driven to rise. The rising pressure in the guide column 7 drives the movable plate 6 to approach the top beam 5 to perform compression processing on the product to be processed. After the processing is completed, the filling mechanism 1 stops filling and releases pressure and flows back. The pressure in the cavity of the main oil cylinder 3 and the guide column 7 is gradually released. The movable plate 6 returns to the initial position with the assistance of the telescopic rod body 8 to perform the next processing operation.

[0037] Through the synergistic effect of the filling mechanism 1 and the hydraulic mechanism 2, the movable plate 6 is driven by rapid filling to perform efficient compression processing, and the telescopic rod 8 is used to assist the movable plate 6 to smoothly return to its original position, thereby improving processing accuracy and efficiency. In specific implementation, the filling mechanism 1 quickly fills the main oil cylinder 3 with liquid, and the pressure in the plug cavity of the main oil cylinder 3 rises and is transmitted to the guide column 7 of the cavity structure, driving the movable plate 6 to move toward the top beam 5 for product compression processing; after the processing is completed, the filling mechanism 1 stops filling and starts pressure relief and reflux, the pressure in the main oil cylinder 3 and the guide column 7 is released, and the telescopic rod 8 assists the movable plate 6 to smoothly return to the initial position, preparing for the next processing.

[0038] The main oil cylinder 3 of the hydraulic press is placed at the bottom, and the stamping work is performed from bottom to top. This structure can firstly reduce the height of the machine body and shorten the distance to the main oil tank, reduce the floor space and improve the response speed of the oil circuit; secondly, it can avoid the safety hazard caused by the downward slide of the piston due to its own weight.

[0039] The hydraulic press also includes a lifting mechanism 9, which is arranged on the base 4. The lifting mechanism 9 includes a driving member 11 and a lifting rod body 12 connected to the output end of the driving member 11. The base 4 and the movable plate 6 are both provided with connected lifting holes 13; the driving member 11 drives the lifting rod body 12 to reciprocate in the lifting holes 13 on the base 4 and the movable plate 6 to eject the processed products placed on the movable plate 6 from the movable plate 6.

[0040] During the processing stage, the filling mechanism 1 quickly fills the main cylinder 3 with liquid, pushing the movable plate 6 to move smoothly along the guide column 7 to the top beam 5, and performs precise compression processing on the workpiece placed on the movable plate 6. After the processing is completed, the filling mechanism 1 stops filling and starts the pressure relief process, and the movable plate 6 is smoothly reset with the assistance of the telescopic rod 8. The jacking mechanism 9 added to the press machine, its driving part 11 accurately controls the jacking rod 12 to reciprocate in the jacking hole 13 that passes through the base 4 and the movable plate 6, can automatically lift the workpiece from the movable plate 6 after the processing is completed, which is convenient for the subsequent removal of the workpiece and the placement of the new workpiece, greatly simplifies the manual operation process, reduces manual intervention, and improves the safety and continuity of the operation. This design not only ensures the processing accuracy and efficiency, but also brings users a more convenient and efficient production experience through a high degree of automation and intelligence.

[0041] The hydraulic press also includes a sub-cylinder body 14 installed inside the main cylinder 3. The volume of the sub-cylinder body 14 is smaller than that of the main cylinder 3. The sub-cylinder body 14 is used to quickly push the movable plate 6 upward in the initial stage; the sub-cylinder body 14 is connected to the main cylinder 3 through a hydraulic pipeline, and the sub-cylinder body 14 is connected to the guide column 7. The filling mechanism 1 outputs the hydraulic oil to the sub-cylinder body 14. The hydraulic pressure of the sub-cylinder body 14 rises to drive the pressure in the guide column 7 to rise. The pressure in the cavity of the guide column 7 rises and drives the movable plate 6 to approach the top beam 5 to perform compression processing operations on the product to be processed.

[0042] The filling mechanism 1 also includes a back pressure valve group 15. The auxiliary cylinder body 14 is provided with a control valve 16 connected to the back pressure valve group 15. The filling mechanism 1 fills the auxiliary cylinder body 14 with liquid. When the pressure in the cavity of the auxiliary cylinder body 14 rises to the pressure value set by the back pressure valve group 15, the control valve 16 of the auxiliary cylinder body 14 opens, and the hydraulic oil is filled into the main cylinder 3 through the auxiliary cylinder body 14 and the filling channel of the auxiliary cylinder body 14 is closed. The pressure in the cavity of the main cylinder 3 rises rapidly, driving the movable plate 6 to approach the top beam 5 to perform compression processing operations on the product to be processed.

[0043] The hydraulic system of this oil press innovatively uses the logic back pressure valve group 15 as the main cylinder pressure switch, and a sub-cylinder body 14 is designed inside the main cylinder body. When the filling mechanism 1 outputs the hydraulic oil to the sub-cylinder body 14, the movable plate 6 is pushed upward quickly. When the pressure in the cavity of the sub-cylinder body 14 rises to the set pressure of the logic back pressure valve group 15, the control valve 16 opens, the main oil cylinder 3 begins to fill quickly and closes the channel of the sub-cylinder body 14. The main oil cylinder 3 then quickly increases the pressure. This pressure increase method abandons the traditional slow-speed process stage and significantly improves the production efficiency of the oil press. It is particularly suitable for mass production processes such as printing, embossing, and shallow drawing.

[0044] The volume of the auxiliary cylinder 14 is smaller than that of the main cylinder 3. Since the volume of the auxiliary cylinder 14 is small, the filling mechanism 1 can fill it with sufficient hydraulic oil in a short time, so that the auxiliary cylinder 14 can be quickly pressurized. This helps to quickly push the movable plate 6 upward in the initial stage of processing and start the entire processing process, thereby shortening the start-up time and improving production efficiency. When the pressure in the auxiliary cylinder 14 reaches the pressure value preset by the back pressure valve group 15, the control valve 16 automatically opens to allow hydraulic oil to flow from the auxiliary cylinder 14 to the main cylinder 3. This design ensures a smooth transition from the auxiliary cylinder 14 to the main cylinder 3, avoiding equipment shock and instability caused by instantaneous high pressure. At the same time, through the adjustment of the back pressure valve group 15, the pressure change during the processing can be accurately controlled, further improving the processing accuracy. In the early stage of processing, using a small-volume auxiliary cylinder 14 for rapid pressure increase and startup can reduce unnecessary energy consumption. As the processing progresses, the main cylinder 3 begins to dominate the processing process. At this time, the auxiliary cylinder 14 has completed its operating task and no additional energy input is required. This design helps to achieve energy-saving and efficient production goals.

[0045] An elastic member 17 is provided at the bottom of the guide column 7 cavity, and the elastic member 17 is used to assist the movable plate 6 to return to the initial position, thereby preventing the movable plate 6 from shaking or deflecting due to pressure relief, thereby improving the processing accuracy.

[0046] During the processing, the movable plate 6 moves smoothly along the guide column 7 under the drive of the hydraulic system, and performs precise compression processing on the workpiece placed thereon. When the processing is completed, the filling mechanism 1 stops filling the liquid, and the system starts to release pressure. At this time, the elastic member 17 (such as a spring or elastic gasket, etc.) at the bottom of the guide column 7 cavity begins to play a role, which can assist the movable plate 6 to return to the initial position smoothly, effectively preventing shaking or deviation caused by pressure relief. This design not only ensures the precise positioning of the movable plate 6 during the processing, but also improves the processing accuracy and stability.

[0047] The hydraulic press also includes a control center 18, which includes an emergency return device 19. A pressure sensor 21 is provided on the hydraulic mechanism 2. When the pressure sensor 21 detects that the pressure of the hydraulic mechanism 2 is abnormal or the equipment fails to operate, the control center 18 immediately starts the emergency return device 19, and the movable plate 6 stops the mold closing action and returns to the initial position. After returning to the initial position, the lifting mechanism 9 completes a product ejection action and ends the operation state of the hydraulic press.

[0048] During the processing, the pressure sensor 21 on the hydraulic mechanism 2 detects the pressure status of the system in real time. Once a pressure abnormality or a malfunction in the equipment operation is detected, the control center 18 responds immediately and starts the emergency return device 19. This device can quickly cut off the power source of the hydraulic system, causing the movable plate 6 to stop the current mold closing action and return to the initial position smoothly. This design effectively prevents equipment damage or personal injury caused by malfunctions and ensures the safety of the processing process. After the movable plate 6 returns to the initial position, the lifting mechanism 9 automatically starts to eject the processed product from the movable plate 6 for subsequent operations. At the same time, the control center 18 issues a command to end the operating state of the hydraulic press to prevent the equipment from continuing to operate in a faulty state. This process ensures that even in the event of a malfunction, the equipment can stop running quickly and safely and be ready for troubleshooting or maintenance.

[0049] The control center 18 also includes a two-hand button 22, which is used to start and close the hydraulic press. A safety grating 23 is installed on the hydraulic mechanism 2. When the safety grating 23 is blocked, the safety grating 23 sends a warning signal and the movable plate 6 stops moving. The movable plate 6 can continue to work only when the two-hand button 22 is pressed again.

[0050] The design of the two-hand button 22 requires the operator to press the button with both hands at the same time when starting or continuing the processing process, thereby avoiding the risk of misoperation that may be caused by one-handed operation. This design effectively prevents accidental startup due to operator negligence or fatigue, and improves the safety of the equipment. At the same time, the safety grating 23 installed on the hydraulic mechanism 2 serves as another line of defense, and can immediately issue a warning signal when it detects that an object (such as the operator's hand or other body part) is blocked. At this time, even if the operator has pressed the two-hand button 22, the movable plate 6 will immediately stop moving, preventing crushing or collision accidents caused by accidental obstruction. The movable plate 6 can only continue to work when the operator removes the obstruction and presses the two-hand button 22 again. This design ensures the safety and reliability of the equipment during the processing process.

[0051] The hydraulic press includes a temperature control system 24 for real-time monitoring and adjusting the temperature of the hydraulic oil to avoid equipment damage and reduced processing accuracy due to excessively high or low oil temperature.

[0052] The temperature control system 24 includes a temperature monitoring module, a cooling device, and a heating device; a temperature sensor is installed in the hydraulic system to monitor the temperature of the hydraulic oil in real time. The temperature sensor can be arranged in key locations such as the main cylinder 3, the auxiliary cylinder, the hydraulic pipeline, and the oil tank. When the hydraulic oil temperature exceeds the set upper limit, the cooling device automatically starts. The cooling device can be an air-cooled radiator or a water-cooled heat exchanger, and the specific selection depends on the working environment and heat dissipation requirements of the equipment. When the hydraulic oil temperature is lower than the set lower limit, the heating device automatically starts. The heating device can be an electric heater or a heat exchanger, which is used to preheat the hydraulic oil in a low temperature environment.

[0053] A sliding sleeve 25 is also provided at the connection between the movable plate 6 and the guide column 7. The sliding sleeve 25 is made of wear-resistant material and is used to reduce the friction between the movable plate 6 and the guide column 7, reduce wear, ensure stable reciprocating movement of the movable plate 6, and reduce noise and vibration during the reciprocating movement.

[0054] A vibration elimination device 26 is also provided at the bottom of the hydraulic mechanism 2. The vibration elimination device 26 is started after the movable plate 6 completes a compression processing operation and returns to the initial position. The vibration elimination device 26 eliminates the residual stress between the movable plate 6 and the guide column 7 by generating tiny vibrations, thereby improving the accuracy and stability of the next processing.

[0055] The vibration elimination device 26 should be designed as a structure that is tightly connected to the bottom of the hydraulic mechanism 2 to ensure that it can stably generate vibrations. The device should contain a vibration source (such as an electromagnetic vibrator, a pneumatic vibrator, etc.) to control parameters such as the frequency, amplitude and time of the vibration. The vibration parameters of the vibration elimination device 26 should be reasonably set according to the specific conditions of the equipment and the processing requirements. The vibration frequency and amplitude should be moderate to ensure that the residual stress can be effectively eliminated while avoiding excessive impact and wear on the equipment. The vibration time should also be adjusted according to the processing cycle and the equipment status to ensure the optimization of the elimination effect.

[0056] A nano-filter layer is provided in the cavity of the guide column 7, which automatically absorbs metal debris by utilizing the flow of hydraulic oil. A fiber optic micro-leakage sensor is installed at the connection between the guide column 7 and the main oil cylinder 3. The fiber optic micro-leakage sensor is used to monitor oil leakage in real time and trigger an alarm. The nano-filter layer and the fiber optic micro-leakage sensor can extend the hydraulic oil replacement cycle, reduce maintenance costs, and prevent sudden leakage accidents.

[0057] Magnetorheological fluid is injected into the sliding housing 25, and an electromagnetic coil is embedded on the surface of the guide column. During the pressing process, the viscosity of the magnetorheological fluid is changed by controlling the current intensity to achieve dynamic locking of the movable plate 6, eliminate micro-displacement at the moment of pressing, and improve the processing accuracy to micron level.

[0058] The inner wall of the cavity of the guide column 7 is designed with a spiral damping groove 27, which is used to destroy the fluid resonance frequency. When the guide column 7 is used as a hydraulic channel, the flow of high-pressure oil may cause resonance, affecting the processing accuracy.

[0059] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A hydraulic press, characterized in that: The invention comprises a liquid filling mechanism (1) and a hydraulic mechanism (2) used in conjunction with the liquid filling mechanism (1); the hydraulic mechanism (2) comprises a main oil cylinder (3), a base (4), a top beam (5), and a movable plate (6) installed between the base (4) and the top beam (5); a plurality of guide pillars (7) are installed between the base (4) and the top beam (5); the movable plate (6) is installed on the plurality of guide pillars (7) for reciprocating movement; a telescopic rod (8) is also provided at one end of the movable plate (6) close to the base (4); the telescopic rod (8) is used to assist in driving the movable plate (6) to reciprocate between the base (4) and the top beam (5) The main oil cylinder (3) is installed below the base (4); the guide column (7) is a hollow structure and is connected to the main oil cylinder (3); the filling mechanism (1) is used to fill the main oil cylinder (3); after the main oil cylinder (3) is filled with liquid, the pressure in the guide column (7) is increased; the increased pressure in the guide column (7) drives the movable plate (6) to approach the top beam (5) to perform compression processing on the product to be processed; after the processing is completed, the filling mechanism (1) stops filling and releases pressure to flow back; the pressure in the cavity of the main oil cylinder (3) and the guide column (7) is gradually released, and the movable plate (6) returns to the initial position with the assistance of the telescopic rod (8).

2. A hydraulic press according to claim 1, characterized in that: The hydraulic press also includes a lifting mechanism (9), which is arranged on the base (4), and includes a driving member (11), a lifting rod body (12) connected to the output end of the driving member (11), and the base (4) and the movable plate (6) are both provided with connected lifting holes (13); the driving member (11) drives the lifting rod body (12) to reciprocate in the lifting holes (13) on the base (4) and the movable plate (6), so as to eject the processed product placed on the movable plate (6) from the movable plate (6).

3. The hydraulic press according to claim 1, characterized in that: The hydraulic press also includes a secondary cylinder body (14) installed inside the main cylinder (3). The volume of the secondary cylinder body (14) is smaller than that of the main cylinder (3). The secondary cylinder body (14) is used to quickly push the movable plate (6) upward in the initial stage. The secondary cylinder body (14) is connected to the main cylinder (3) through a hydraulic pipeline. The secondary cylinder body (14) is connected to the guide column (7). The filling mechanism (1) outputs hydraulic oil to the secondary cylinder body (14). The hydraulic pressure of the secondary cylinder body (14) rises to drive the pressure in the guide column (7) to rise. The pressure rise in the guide column (7) drives the movable plate (6) to move closer to the top beam (5) to perform compression processing on the product to be processed.

4. A hydraulic press according to claim 3, characterized in that: The liquid filling mechanism (1) further comprises a back pressure valve group (15). The auxiliary cylinder body (14) is provided with a control valve (16) which is connected to the back pressure valve group (15). The liquid filling mechanism (1) fills the auxiliary cylinder body (14) with liquid. When the pressure in the cavity of the auxiliary cylinder body (14) rises to the pressure value set by the back pressure valve group (15), the control valve (16) of the auxiliary cylinder body (14) opens, and the hydraulic oil is filled into the main cylinder (3) via the auxiliary cylinder body (14) and the filling channel of the auxiliary cylinder body (14) is closed. The pressure in the cavity of the main cylinder (3) rises rapidly, driving the movable plate (6) to approach the top beam (5) to perform compression processing operations on the product to be processed.

5. The hydraulic press according to claim 1, characterized in that: An elastic member (17) is provided at the bottom of the guide column (7) cavity. The elastic member (17) is used to assist the movable plate (6) to return to the initial position, thereby preventing the movable plate (6) from shaking or deflecting due to pressure relief, thereby improving processing accuracy.

6. The hydraulic press according to claim 1, characterized in that: The hydraulic press also includes a control center (18), the control center (18) includes an emergency return device (19), and a pressure sensor (21) is provided on the hydraulic mechanism (2). When the pressure sensor (21) detects that the pressure of the hydraulic mechanism (2) is abnormal or the equipment fails to operate, the control center (18) immediately starts the emergency return device (19), the movable plate (6) stops the mold closing action and returns to the initial position, and after returning to the initial position, the lifting mechanism (9) completes a product ejection action and ends the operation state of the hydraulic press.

7. The hydraulic press according to claim 6, characterized in that: The control center (18) further comprises a two-hand button (22) for opening and closing the hydraulic press. A safety grating (23) is installed on the hydraulic mechanism (2). When the safety grating (23) is blocked, the safety grating (23) sends out a warning signal and the movable plate (6) stops moving. The movable plate (6) can continue to work only when the two-hand button (22) is pressed again.

8. The hydraulic press according to claim 1, characterized in that: The hydraulic press comprises a temperature control system (24) for real-time monitoring and adjusting the temperature of the hydraulic oil to avoid equipment damage and reduced processing accuracy due to excessively high or low oil temperature.

9. The hydraulic press according to claim 1, characterized in that: A sliding sleeve (25) is also provided at the connection between the movable plate (6) and the guide column (7). The sliding sleeve (25) is made of wear-resistant material and is used to reduce the friction between the movable plate (6) and the guide column (7).

10. The hydraulic press according to claim 1, characterized in that: The bottom of the hydraulic mechanism (2) is also provided with a vibration elimination device (26). The vibration elimination device (26) is activated after the movable plate (6) completes a compression processing operation and returns to the initial position. The vibration elimination device (26) eliminates the residual stress between the movable plate (6) and the guide column (7) by generating a small vibration, thereby improving the accuracy and stability of the next processing.

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