A servo hydraulic cylinder for processing of a center control panel of an automobile
By introducing a coolant circulation and stirring device into the servo hydraulic cylinder, the system failure problem caused by hydraulic oil overheating was solved, the durability and stability of the hydraulic cylinder were improved, and the maintenance process was simplified.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- FUZHOU YUANSHEN PRECISION IND CO LTD
- Filing Date
- 2026-04-24
- Publication Date
- 2026-05-29
AI Technical Summary
During use, existing hydraulic cylinders experience hydraulic oil temperature rise due to friction and other factors, generating acidic substances and precipitates that corrode metal parts, clog filter elements and valve ports, leading to system failure.
A servo hydraulic cylinder comprising a return oil tank, a cooling coil, a stirring rod, and a cleaning device was designed. The system uses coolant circulation to cool and stir the fluid, combined with a scraper and a screen to remove debris from the coolant, preventing excessively high hydraulic oil temperature and deposits from affecting system stability.
It effectively avoids system failures caused by excessively high hydraulic oil temperature, improves the durability and operational stability of the device, simplifies the maintenance process, and enhances the convenience of the device.
Smart Images

Figure CN122106972A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of hydraulic cylinder technology, specifically a servo hydraulic cylinder for processing automotive center console panels. Background Technology
[0002] A servo hydraulic cylinder is an actuator in an electro-hydraulic servo system or proportional system. It applies controllable pushing, pulling, pressing, or torsional forces to an object, achieving precise control over the object's direction, position, speed, or deformation. The working principle of a servo hydraulic cylinder is primarily based on the coordinated operation of a servo motor and a hydraulic cylinder. The servo motor receives command signals from the control system, accurately controlling its rotation angle and speed. The motor is connected to the piston rod of the hydraulic cylinder via a reducer, converting the motor's rotational motion into the linear motion of the piston rod. Inside the hydraulic cylinder, the piston divides the working chamber into two independent oil chambers. When the piston rod extends... One side of the oil chamber increases in volume to create negative pressure, while the other side decreases in volume to create positive pressure. Through an external oil supply system, hydraulic oil is delivered to the corresponding oil chamber, enabling the piston rod to extend or retract. The control system continuously adjusts the operating state of the servo motor based on feedback signals, thereby achieving precise control of the position, speed, and force of the hydraulic cylinder. In the processing of automotive center console panels, the servo hydraulic cylinder is a high-precision actuator that combines servo motor technology with traditional hydraulic cylinders. Its core function is to achieve high-precision control of the moving parts of the processing equipment (such as cutting tools and fixtures) through an electro-hydraulic servo system, thereby ensuring the processing quality of the panel.
[0003] In existing hydraulic cylinders, the internal hydraulic oil heats up during use due to friction and other factors. At high temperatures, the hydraulic oil undergoes accelerated oxidation, generating acidic substances and precipitates. These substances corrode metal parts, clog filters and valve ports, leading to system malfunctions. Therefore, we propose a servo hydraulic cylinder for automotive center console panel processing to address this deficiency in existing technology. Summary of the Invention
[0004] To achieve the above objectives, the present invention provides the following technical solution: a servo hydraulic cylinder for processing automotive center console panels, comprising a mounting base, a hydraulic body fixedly disposed on one side of the outer wall of the mounting base, and an oil return mechanism and a cooling mechanism disposed at the bottom of the inner wall of the mounting base; The oil return mechanism includes an oil return tank fixedly disposed on one side of the inner wall of the mounting base, and the oil return tank has an oil return pipe connected to the hydraulic main body; The cooling mechanism includes a cooling coil wound around the outer wall of the return oil tank. The two ends of the cooling coil form an outlet and a return outlet, respectively. The outlet and return outlet are connected to a cooling cylinder. A drive pump is installed on the inner wall of the outlet.
[0005] Furthermore, a first drive rod is rotatably installed inside the oil return tank, and multiple first stirring rods are fixed at equal intervals on the bottom of the outer wall of the first drive rod.
[0006] Furthermore, a protective housing is provided on the top of the outer wall of the mounting base, and a protective cavity is opened in the inner wall of the protective housing. A driving mechanism is provided inside the protective housing. The driving mechanism includes a sleeve fixedly installed at the bottom of the inner wall of the protective cavity. A sliding rod is slidably provided on the inner wall of the sleeve along the height direction. A connecting rod is provided on the top of the outer wall of the sliding rod. A first lifting component is fixedly provided at one end of the outer wall of the connecting rod. A first mating hole is provided on the top of the outer wall of the first lifting component. The top of the outer wall of the first driving rod extends into the protective cavity and is threadedly connected to the first mating hole.
[0007] Furthermore, an arc-shaped plate is fixedly provided on one side of the outer wall of the sliding rod, and a drive motor is fixedly provided on the outer wall of the sleeve located on one side of the arc-shaped plate. A cam is fixedly provided on the drive end of the drive motor, and the cam slides in contact with the arc-shaped plate.
[0008] Furthermore, a second connecting member is fixedly provided on the outer wall of the connecting rod at the other end of the first lifting member. A second mating hole is provided on the outer wall of the second connecting member. A second driving rod is rotatably provided on the inner wall of the cooling cylinder. Multiple second stirring rods are provided at equal intervals on one side of the outer wall of the second driving rod. The upper middle part of the outer wall of the second driving rod is threadedly connected to the second mating hole.
[0009] Furthermore, a fixing frame is fixedly provided on the outer wall of the second drive rod on the other side of the second stirring rod, and a sieve filter screen is detachably connected to the middle and rear part of the inner wall of the fixing frame.
[0010] Furthermore, movable grooves are provided on both sides of the front part of the inner wall of the fixed frame. A transmission rod is rotatably provided on the inner wall of the movable groove. A scraper is threadedly connected to the outer wall of the transmission rod. A bonding wheel is fixedly connected to the top of the outer wall of the transmission rod. The bonding wheel is in contact with and rotates against the inner wall of the cooling cylinder.
[0011] Furthermore, a collection box is provided at the bottom of the inner wall of the fixed frame, a collection cavity is provided on the outer wall of the collection box, a blocking paddle is provided on both sides of the opening of the collection cavity, a separation port is provided on one side of the bottom of the outer wall of the collection box, and a separation base is slidably provided in the separation port.
[0012] Furthermore, the hydraulic body includes a hydraulic fixed cylinder fixed to the mounting base and a hydraulic movable rod sliding inside the hydraulic fixed cylinder. A first annular cover is fixedly connected to the outer wall of the hydraulic fixed cylinder, and a second annular cover is fixedly connected to the top of the outer wall of the first annular cover. A cleaning cylinder is rotatably provided between the first annular cover and the second annular cover, and a cleaning sponge is provided on the inner wall of the cleaning cylinder to contact the hydraulic movable rod.
[0013] Furthermore, a drive gear is rotatably provided on one side between the first annular cover and the second annular cover, and the outer wall of the cleaning cylinder meshes with the drive gear. An L-shaped rod is slidably provided at the first annular cover and the second annular cover, and the L-shaped rod is threadedly connected to the inner wall of the drive gear. One end of the L-shaped rod is fixedly connected to the first lifting component. Beneficial effects
[0014] Compared with the prior art, the present invention provides a servo hydraulic cylinder for processing automotive center console panels, which has the following advantages: 1. Start the drive pump to draw the coolant in the cooling cylinder into the cooling coil through the outlet, thereby cooling the surface of the return oil tank and thus cooling the hydraulic oil inside the return oil tank. The coolant will flow back into the cooling cylinder through the return port, realizing the self-circulation of the coolant. Compared with the prior art, this application uses coolant to cool the heated hydraulic oil in the return oil tank, which can effectively avoid system failures caused by excessive hydraulic oil temperature and improve the durability of the device.
[0015] 2. The sliding rod moves, causing the connecting rod to move up and down, which in turn causes the first lifting component to move up and down on the surface of the first driving rod. Since the first mating hole is threadedly connected to the first driving rod, the first stirring rod can be driven to rotate and stir in the return oil tank. Furthermore, since the first lifting component moves up and down, the first stirring rod rotates and stirs back and forth, further improving the uniformity of hydraulic oil mixing.
[0016] 3. When maintenance is required, first remove the collection box and then pull out the separation base to clean and collect debris inside the coolant, improve the stability of hydraulic oil cooling, and the scraper moves and scrapes by reciprocating through contact with the surface of the cooling cylinder, without the need for other additional power, thus improving the convenience of the device. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of a servo hydraulic cylinder for processing automotive center console panels, as proposed in this invention. Figure 2 This is a schematic side sectional view of a servo hydraulic cylinder for processing automotive center console panels, as proposed in this invention. Figure 3 This is a schematic diagram of the first and second drive rods of a servo hydraulic cylinder for processing automotive center console panels, as proposed in this invention. Figure 4 This is a schematic diagram of a servo hydraulic cylinder drive mechanism for processing automotive center console panels, as proposed in this invention. Figure 5 This is a schematic diagram showing the positions of the return oil tank, cooling coil, and cooling cylinder of a servo hydraulic cylinder for processing automotive center console panels, as proposed in this invention. Figure 6 This is a schematic diagram of a servo hydraulic cylinder fixing frame for processing automotive center console panels, as proposed in this invention. Figure 7 This is a split schematic diagram of a servo hydraulic cylinder fixing frame for processing automotive center console panels, as proposed in this invention. Figure 8 This is a side sectional view of a servo hydraulic cylinder fixing frame for processing automotive center console panels, as proposed in this invention. Figure 9 This is a schematic diagram showing the disassembled servo hydraulic cylinder collection box for processing automotive center console panels, as proposed in this invention. Figure 10 This is a side sectional view of a servo hydraulic cylinder collection box for processing automotive center console panels, as proposed in this invention. Figure 11 This invention proposes a servo hydraulic cylinder for machining automotive center console panels. Figure 2 Enlarged structural diagram at point A in the middle; Figure 12 This is a schematic diagram showing the positions of the first annular cover, the second annular cover, and the cleaning cylinder of a servo hydraulic cylinder used for processing automotive center console panels, as proposed in this invention.
[0018] In the diagram: 100, mounting base; 110, hydraulic main body; 111, hydraulic fixed cylinder; 112, hydraulic movable rod; 120, protective box; 121, protective cavity; 200, oil return mechanism; 210, oil return tank; 220, oil return pipe; 230, first drive rod; 231, first stirring rod; 240, second drive rod; 241, second stirring rod; 250, fixed frame; 251, moving groove; 252, transmission rod; 253, scraper; 254, bonding wheel; 261, screening filter screen; 270, collection box; 271, collection cavity; 272, barrier plate; 273, separation port; 27 4. Separating base; 300. Cooling mechanism; 310. Cooling coil; 311. Liquid outlet; 312. Liquid return port; 320. Cooling cylinder; 330. Drive pump; 400. Drive mechanism; 410. Sleeve; 420. Sliding rod; 421. Arc plate; 430. Connecting rod; 440. First lifting component; 441. First mating hole; 450. Drive motor; 451. Cam; 460. Second connecting component; 461. Second mating hole; 510. First annular cover; 520. Second annular cover; 530. Cleaning cylinder; 531. Cleaning sponge; 540. Drive gear; 550. L-shaped rod. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Please see Figures 1 to 5A servo hydraulic cylinder for processing automotive center console panels includes a mounting base 100, a hydraulic body 110 fixedly provided on one side of the outer wall of the mounting base 100, and an oil return mechanism 200 and a cooling mechanism 300 provided at the bottom of the inner wall of the mounting base 100. The oil return mechanism 200 includes an oil return tank 210 fixedly disposed on one side of the inner wall of the mounting base 100, and the oil return tank 210 has an oil return pipe 220 connected to the hydraulic body 110. The cooling mechanism 300 includes a cooling coil 310 wound around the outer wall of the return oil tank 210. The surface of the return oil tank 210 is engraved with threaded grooves that fit the cooling coil 310, which facilitates installation and further increases the contact area between the cooling coil 310 and the return oil tank 210, thereby improving the cooling effect of the device. A one-way valve is provided inside the cooling coil 310 to ensure the flow direction of the coolant in the cooling coil 310. The two ends of the cooling coil 310 form an outlet 311 and a return outlet 312, respectively. The outlet 311 and the return outlet 312 are connected to a cooling cylinder 320. A drive pump 330 is provided on the inner wall of the outlet 311.
[0021] Please see Figures 3 to 9 The return oil tank 210 has a first drive rod 230 rotatably mounted inside, and a plurality of first stirring rods 231 are fixedly mounted at equal intervals on the bottom of the outer wall of the first drive rod 230. The top of the outer wall of the mounting base 100 is provided with a protective box 120, and a protective cavity 121 is opened in the inner wall of the protective box 120. The protective box 120 is provided with a drive mechanism 400, which includes a sleeve 410 fixedly mounted on the bottom of the inner wall of the protective cavity 121. A sliding rod 420 is slidably mounted on the inner wall of the sleeve 410 along the height direction. A connecting rod 430 is provided on the top of the outer wall of the sliding rod 420. A first lifting member 440 is fixedly provided on one end of the outer wall of the connecting rod 430. A first mating hole 441 is provided on the top of the outer wall of the first lifting member 440. The top of the outer wall of the first driving rod 230 extends into the protective cavity 121 and is threadedly connected to the first mating hole 441. The first lifting member 440 moves up and down once. The rotation angle of the first lifting member 440 is greater than 360 degrees, which can ensure the stirring effect of the first stirring rod 231 on the hydraulic oil.
[0022] Please see Figures 4 to 12An arc-shaped plate 421 is fixedly provided on one side of the outer wall of the sliding rod 420. A drive motor 450 is fixedly provided on the outer wall of the sleeve 410 on one side of the arc-shaped plate 421. A cam 451 is fixedly provided at the driving end of the drive motor 450. The cam 451 slides in contact with the arc-shaped plate 421. The arc-shaped cross-section of the arc-shaped plate 421 can improve the smoothness of the contact between the cam 451 and the arc-shaped plate 421. A second connecting member 460 is fixedly provided on the outer wall of the connecting rod 430 at the other end of the first lifting member 440. A second mating hole 461 is provided on the outer wall of the second connecting member 460. A second driving rod 240 is rotatably provided on the inner wall of the cooling cylinder 320. Multiple second stirring rods 241 are equidistantly provided on one side of the outer wall of the second driving rod 240. The upper middle part of the outer wall of the second driving rod 240 is threadedly connected to the second mating hole 461. The rotation angle of the second driving rod 240 is greater than 360 degrees, which can ensure that the second driving rod 240 can fully roll up the coolant to ensure subsequent collection work.
[0023] Please see Figures 4 to 12 A fixed frame 250 is fixedly provided on the outer wall of the second drive rod 240 on the other side of the second stirring rod 241. A sieve filter 261 is detachably connected to the middle and rear part of the inner wall of the fixed frame 250. Movable grooves 251 are opened on both sides of the middle and front part of the inner wall of the fixed frame 250. A transmission rod 252 is rotatably provided on the inner wall of the movable groove 251. A scraper 253 is threadedly connected to the outer wall of the transmission rod 252. The bottom of the scraper 253 is arc-shaped to facilitate pushing the blocking paddle 272 to both sides. A contact wheel 254 is fixedly connected to the top of the outer wall of the transmission rod 252. The contact wheel 254 is in contact with and rotates against the inner wall of the cooling cylinder 320. A collection box 270 is provided at the bottom of the inner wall of the fixed frame 250. A collection cavity 271 is opened on the outer wall of the collection box 270. Blocking paddles 272 are provided on both sides of the opening of the collection cavity 271. A separation port 273 is opened on one side of the bottom of the outer wall of the collection box 270. A separation base 274 is slidably provided in the separation port 273.
[0024] Please see Figures 4 to 12 The hydraulic body 110 includes a hydraulic fixing cylinder 111 fixed to the mounting base 100 and a sliding hydraulic movable rod 112 inside the hydraulic fixing cylinder 111. A first annular cover 510 is fixedly connected to the outer wall of the hydraulic fixing cylinder 111, and a second annular cover 520 is fixedly connected to the top of the outer wall of the first annular cover 510. A cleaning cylinder 530 is rotatably provided between the first annular cover 510 and the second annular cover 520. The inner wall of the cleaning cylinder 530 has a cleaning sponge 531 that contacts the hydraulic movable rod 112. A drive gear 540 is rotatably provided on one side between the first annular cover 510 and the second annular cover 520. The outer wall of the cleaning cylinder 530 meshes with the drive gear 540. An L-shaped rod 550 is slidably provided between the first annular cover 510 and the second annular cover 520, and the L-shaped rod 550 is threadedly connected to the inner wall of the drive gear 540. One end of the L-shaped rod 550 is fixedly connected to the first lifting member 440.
[0025] Working principle and usage steps: When the hydraulic body 110 extends, the hydraulic oil inside the return oil tank 210 is pushed into the hydraulic body 110 through the return oil pipe 220. When the hydraulic body 110 retracts, the hydraulic oil comes into contact with the inner wall of the hydraulic body 110 and is heated. The heated hydraulic oil flows into the return oil tank 210. The drive pump 330 is started to draw the coolant in the cooling cylinder 320 into the cooling coil 310 through the outlet 311, thereby cooling the surface of the return oil tank 210 and thus cooling the hydraulic oil inside the return oil tank 210. The coolant flows back into the cooling cylinder 320 through the return outlet 312, realizing the self-circulation of the coolant. Compared with the prior art, this application uses coolant to cool the heated hydraulic oil in the return oil tank 210, which can effectively avoid system failures caused by excessively high hydraulic oil temperature and improve the durability of the device.
[0026] Considering that in actual use, when the device is not used for a long time, hydraulic oil will accumulate sediment due to its own characteristics, which will affect the stability of the system operation. Before use, the drive motor 450 is started to drive the cam 451 to rotate. The cam 451 will contact the surface of the arc plate 421, thereby pushing the sliding rod 420 to move up and down inside the sleeve 410. The movement of the sliding rod 420 drives the connecting rod 430 to move up and down, thereby causing the first lifting member 440 to move up and down on the surface of the first drive rod 230. Since the first mating hole 441 is threadedly connected to the first drive rod 230, the first stirring rod 231 can be driven to rotate and stir in the return oil tank 210. Furthermore, since the first lifting member 440 moves up and down, the first stirring rod 231 rotates and stirs back and forth, further improving the uniformity of the hydraulic oil mixing.
[0027] Considering the actual usage situation, due to the characteristics of the coolant itself, it will mix with debris on the inner wall of the pipe after prolonged use, affecting the cooling effect. When the connecting rod 430 moves up and down, it will drive the second connecting piece 460 and the surface of the second drive rod 240 to move up and down in a threaded manner, causing the second drive rod 240 to rotate. The second stirring rod 241 will roll up the debris in the coolant, and the screening screen 261 in the fixed frame 250 will collect the rolled-up debris. When the fixed frame 250 moves, the contact wheel 254 will contact and rotate with the inner wall of the cooling cylinder 320 through friction, thereby driving the transmission rod 252 in the moving groove 251 to rotate. The rotation of the transmission rod 252 will drive the scraper 253 to remove the debris from the surface of the screening screen 261. When the scraper 253 moves to the lowest point, it deforms the blocking plate 272 by pushing it to both sides. The scraper 253 pushes the debris collected at the bottom into the collection chamber 271 inside the collection box 270. When the scraper 253 moves upward, the blocking plate 272 returns to its original position due to its elasticity, sealing the collection chamber 271 and preventing debris from flowing out. When maintenance is required, the collection box 270 is first removed, and then the separation base 274 is pulled out, thereby cleaning and collecting debris inside the coolant, improving the stability of hydraulic oil cooling. Furthermore, the scraper 253 moves and scrapes by reciprocating through contact with the surface of the cooling cylinder 320, without the need for additional power, thus improving the convenience of the device.
[0028] When the hydraulic movable rod 112 slides inside the hydraulic fixed cylinder 111, the cleaning sponge 531 inside the cleaning cylinder 530 will come into contact with the surface of the hydraulic movable rod 112 to clean the dust on its surface, thereby preventing the dust on the surface of the hydraulic movable rod 112 from coming into contact with the hydraulic oil and causing hydraulic oil contamination. At the same time, when the first lifting component 440 moves up and down, it will drive the L-shaped rod 550 to move up and down, thereby driving the drive gear 540 to mesh and rotate with the surface of the cleaning cylinder 530, causing the cleaning sponge 531 to rotate, further improving the cleaning effect of the cleaning sponge 531 on the surface of the hydraulic movable rod 112 and improving the overall stability of the device operation.
[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A servo hydraulic cylinder for processing automotive center console panels, comprising a mounting base, a hydraulic body fixedly disposed on one side of the outer wall of the mounting base, and an oil return mechanism and a cooling mechanism disposed at the bottom of the inner wall of the mounting base; The oil return mechanism includes an oil return tank fixedly disposed on one side of the inner wall of the mounting base, and the oil return tank has an oil return pipe connected to the hydraulic main body; The cooling mechanism includes a cooling coil wound around the outer wall of the return oil tank. The two ends of the cooling coil form an outlet and a return outlet, respectively. The outlet and return outlet are connected to a cooling cylinder. A drive pump is installed on the inner wall of the outlet. The oil return tank is equipped with a first drive rod that rotates inside, and multiple first stirring rods are fixed at equal intervals on the bottom of the outer wall of the first drive rod. The top of the outer wall of the mounting base is provided with a protective box, and the inner wall of the protective box is provided with a protective cavity. The protective box is provided with a driving mechanism. The driving mechanism includes a sleeve fixedly installed at the bottom of the inner wall of the protective cavity. A sliding rod is slidably provided along the height direction on the inner wall of the sleeve. A connecting rod is provided at the top of the outer wall of the sliding rod. A first lifting component is fixedly provided at one end of the outer wall of the connecting rod. A first mating hole is provided at the top of the outer wall of the first lifting component. The top of the outer wall of the first driving rod extends into the protective cavity and is threadedly connected to the first mating hole.
2. A servo hydraulic cylinder for processing automotive center console panels according to claim 1, characterized in that: An arc-shaped plate is fixedly provided on one side of the outer wall of the sliding rod, and a drive motor is fixedly provided on the outer wall of the sleeve located on one side of the arc-shaped plate. A cam is fixedly provided on the drive end of the drive motor, and the cam slides in contact with the arc-shaped plate.
3. A servo hydraulic cylinder for processing automotive center console panels according to claim 1, characterized in that: A second connecting member is fixedly provided on the outer wall of the connecting rod at the other end of the first lifting member. A second mating hole is provided on the outer wall of the second connecting member. A second driving rod is rotatably provided on the inner wall of the cooling cylinder. Multiple second stirring rods are provided at equal intervals on one side of the outer wall of the second driving rod. The upper part of the outer wall of the second driving rod is threadedly connected to the second mating hole.
4. A servo hydraulic cylinder for processing automotive center console panels according to claim 3, characterized in that: A fixing frame is fixedly provided on the outer wall of the second drive rod on the other side of the second stirring rod, and a sieve filter screen is detachably connected to the middle and rear part of the inner wall of the fixing frame.
5. A servo hydraulic cylinder for processing automotive center console panels according to claim 4, characterized in that: The inner wall of the fixed frame has movable grooves on both sides of the front part. A transmission rod is rotatably installed on the inner wall of the movable groove. A scraper is threadedly connected to the outer wall of the transmission rod. A bonding wheel is fixedly connected to the top of the outer wall of the transmission rod. The bonding wheel is in contact with the inner wall of the cooling cylinder and rotates.
6. A servo hydraulic cylinder for processing automotive center console panels according to claim 5, characterized in that: A collection box is provided at the bottom of the inner wall of the fixed frame, and a collection cavity is provided on the outer wall of the collection box. A blocking lever is provided on both sides of the opening of the collection cavity, and a separation port is provided on one side of the bottom of the outer wall of the collection box. A separation base is slidably provided in the separation port.
7. A servo hydraulic cylinder for processing automotive center console panels according to claim 1, characterized in that: The hydraulic body includes a hydraulic fixed cylinder fixed to the mounting base and a hydraulic movable rod that slides inside the hydraulic fixed cylinder. A first annular cover is fixedly connected to the outer wall of the hydraulic fixed cylinder, and a second annular cover is fixedly connected to the top of the outer wall of the first annular cover. A cleaning cylinder is rotatably provided between the first annular cover and the second annular cover, and a cleaning sponge that contacts the hydraulic movable rod is located on the inner wall of the cleaning cylinder.
8. A servo hydraulic cylinder for processing automotive center console panels according to claim 7, characterized in that: A drive gear is rotatably provided on one side between the first and second annular covers. The outer wall of the cleaning cylinder meshes with the drive gear. An L-shaped rod is slidably provided at the first and second annular covers, and the L-shaped rod is threadedly connected to the inner wall of the drive gear. One end of the L-shaped rod is fixedly connected to the first lifting component.