A cylinder with internal lubrication

Abstract

The application relates to the technical field of air cylinders, and discloses an air cylinder with internal lubricating function, which comprises a base, the top of the base is provided with an air cylinder assembly and a lubricating mechanism, the lubricating mechanism comprises an electromagnetic valve connected to one side of the air cylinder assembly, one side of the electromagnetic valve is connected with an oil atomizer, a processing mechanism is arranged on one side of the electromagnetic valve, two air outlet pipes are connected to one side of the electromagnetic valve, the two air outlet pipes are both provided with the processing mechanism, the processing mechanism comprises a processing cover connected to the bottom of the air outlet pipe, activated carbon is arranged in the processing cover, and a detachable movable cover is arranged on one side of the processing cover; through the processing mechanism, when the gas generated during the working process of the air cylinder enters the processing cover through the air outlet pipe, the activated carbon in the processing cover can effectively adsorb and filter the oil mist, water vapor and other harmful impurities in the gas, the purified gas is discharged through the exhaust pipe, and the environmental pollution problem caused by the direct discharge of the exhaust gas of the traditional air cylinder without treatment is solved.

Description

Technical Field

[0001] This invention relates to the field of cylinder technology, specifically to a cylinder with internal lubrication function. Background Technology

[0002] As a cylindrical metal component that guides the piston to perform linear reciprocating motion, the cylinder is a core component in the industrial field for realizing energy conversion and mechanical action. Its development can be traced back to simple energy conversion devices in ancient times. It laid the foundation with the application of steam engines during the Industrial Revolution, and later modernized with the advancement of internal combustion engines and pneumatic technology. Today, powered by compressed air or hydraulics, it is widely used in automated production lines in manufacturing, logistics warehousing and sorting, motion control of construction machinery, food packaging, printing and other fields.

[0003] In practical applications of cylinders, exhaust gases are inevitably emitted during operation. However, traditional cylinder designs often neglect the effective treatment of these exhaust gases. These gases may contain oil mist, water vapor, and other impurities carried from inside the cylinder. Direct discharge into the environment will pollute the surrounding work environment and affect the health of operators. Furthermore, it does not meet the environmental and cleanliness requirements of modern industrial production. Existing cylinders lack dedicated purification mechanisms for exhaust gases, failing to filter and adsorb harmful substances, resulting in untreated gas discharge and numerous problems. Simultaneously, the piston rod carries oil from inside the cylinder during reciprocating motion. If this oil adheres to the outer wall of the piston rod, it will not only affect the normal movement of the piston rod and increase frictional resistance but may also cause corrosion on the piston rod surface, reducing the cylinder's lifespan and working accuracy. Traditional cylinder structures struggle to effectively scrape and clean the outer wall of the piston rod, lacking suitable scraping components to promptly remove oil contamination. This accumulation of oil contaminants leads to a series of problems such as movement jamming and seal failure, severely impacting the overall performance and effectiveness of the cylinder. Summary of the Invention

[0004] The purpose of this invention is to provide a cylinder with an internal lubrication function, which solves the problem in the prior art that existing cylinders lack a dedicated mechanism for purifying exhaust gas and cannot filter and adsorb harmful substances in the gas.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A cylinder with internal lubrication function, comprising:

[0007] A base, on the top of which a cylinder assembly and a lubrication mechanism are provided;

[0008] The lubrication mechanism includes a solenoid valve connected to one side of the cylinder assembly, an oil mist lubricator connected to one side of the solenoid valve, and support plates fixedly installed on both sides of the oil mist lubricator. The support plates are fixedly connected to the top of the base.

[0009] The processing mechanism is located on one side of a solenoid valve. Two air outlet pipes are connected to one side of the solenoid valve. A processing mechanism is provided on one side of each of the two air outlet pipes. The processing mechanism includes a processing cover connected to the bottom of the air outlet pipe. Activated carbon is placed inside the processing cover. A detachable movable cover is provided on one side of the processing cover. The movable cover is fixedly connected to the activated carbon. An exhaust pipe is connected to the bottom side of the processing cover. The activated carbon is matched with the air outlet pipe.

[0010] Preferably, movable plates are fixedly installed on both sides of the movable cover, fixed plates are fixedly installed on both sides of the processing cover, and a screw is fixedly installed on one side of the fixed plate. The screw is inserted into the movable plate, and the screw extends to one side of the movable plate and is screwed with a nut.

[0011] Preferably, a sealing strip is fixedly installed on one side of the movable cover, a groove for installing the sealing strip is provided on one side of the processing cover, and a sealing plate matching the processing cover is provided on one side inside the movable cover.

[0012] Preferably, the cylinder assembly includes a front cover and a rear cover fixedly mounted on the top of the base. A plurality of tie rods and a cylinder body are fixedly mounted between the front cover and the rear cover. A piston body is provided inside the cylinder body. A piston rod is fixedly mounted at one end of the piston body. The piston rod extends to one side of the rear cover and is provided with a cleaning mechanism.

[0013] Preferably, both the front end cover and the rear end cover have air chambers inside, and the top of each of the two air chambers is connected to an air inlet pipe. Both air inlet pipes are connected to a solenoid valve. Two sets of fixing sleeves are fixedly installed on the outer wall of the pull rod. A support seat is fixedly installed between each set of fixing sleeves. A connecting plate is fixedly installed between the support seat and the solenoid valve.

[0014] Preferably, buffer sleeves are fixedly installed on both sides of the piston body, and both buffer sleeves are fixedly installed on the outer wall of the piston rod. Guide sleeves matching the two buffer sleeves are fixedly installed on the opposite sides of the front end cover and the rear end cover.

[0015] Preferably, the cleaning mechanism includes an extension seat fixedly installed on one side of the rear end cover, a detachable movable seat is provided on one side of the extension seat, a scraping component is provided between the extension seat and the movable seat to scrape the outer wall of the piston rod, a collection component is provided at the bottom of the extension seat to collect the scraped oil, and a positioning sleeve is provided on one side of the extension seat. Both the extension seat and the movable seat are fitted onto the outer wall of the piston rod.

[0016] Preferably, the scraping assembly includes a cleaning sleeve fixedly installed on one side of the movable seat. The cleaning sleeve is inclined, and an inclined cavity for inserting the cleaning sleeve is provided on one side of the extension seat. The cleaning sleeve fits against the outer wall of the piston rod.

[0017] Preferably, the collection assembly includes a guide hole opened at the top of the inclined cavity, an oil storage shell is fixedly installed at the bottom of the extension seat, a discharge pipe is connected to the bottom of the oil storage shell, and a discharge knob is rotatably installed at the bottom of the discharge pipe.

[0018] Preferably, a plurality of annularly distributed positioning rods are fixedly installed on one side of the extension seat, and each of the positioning rods is provided with a thread on one side. The movable seat is inserted into the plurality of positioning rods, and a plurality of nuts are provided on one side of the movable seat to be screwed into the threads.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0020] 1. This invention, through its processing mechanism, allows the activated carbon inside the cylinder to effectively adsorb and filter oil mist, water vapor, and other harmful impurities in the gas after it enters the processing hood through the exhaust pipe during cylinder operation. The purified gas is then discharged through the exhaust pipe, solving the environmental pollution problem caused by the direct discharge of untreated cylinder exhaust in traditional methods. This improves the quality of the working environment, protects the health of operators, and meets modern industrial environmental protection requirements. Furthermore, the movable hood and the processing hood in the processing mechanism are detachably connected. Through the cooperation of the movable plate, fixed plate, screw, and nut, the movable hood can be quickly disassembled and assembled. When the activated carbon adsorption capacity is saturated, the movable hood and the fixedly connected activated carbon can be easily removed for replacement or cleaning, ensuring that the exhaust treatment effect remains highly efficient and avoiding the problem of reduced purification capacity due to activated carbon failure. At the same time, the sealing strip on one side of the movable hood cooperates with the groove of the processing hood, and the matching design of the sealing plate inside the movable hood and the processing hood effectively enhances the sealing between the processing hood and the movable hood, preventing the gas to be treated from leaking through gaps without being filtered by activated carbon. This ensures that all gas is treated by activated carbon before being discharged, greatly improving the efficiency and reliability of exhaust purification.

[0021] 2. The scraping component in the cleaning mechanism of this invention can effectively scrape the outer wall of the piston rod. The inclined cleaning sleeve fits against the outer wall of the piston rod. When the piston rod reciprocates, the cleaning sleeve can thoroughly scrape off the oil stains attached to its surface, avoiding the accumulation of oil stains that may affect the piston rod's movement accuracy or increase frictional resistance, thus ensuring the smooth operation of the cylinder. The collection component of the cleaning mechanism guides the scraped oil stains into the oil storage tank for centralized collection through the guide hole. The collected oil stains can then be discharged periodically through the discharge pipe and discharge knob, preventing oil stains from dripping and contaminating the equipment and working environment. At the same time, it facilitates the recycling or centralized treatment of oil stains, improving the equipment's maintenance convenience. The extension seat and the movable seat are detachably connected by a positioning rod and a nut. When the cleaning sleeve wears down due to long-term use and affects the cleaning effect, the movable seat can be easily disassembled to replace the cleaning sleeve without replacing the entire cleaning mechanism, reducing maintenance costs and extending the overall service life of the cleaning mechanism. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a cross-sectional view of the cylinder assembly of the present invention;

[0024] Figure 3 This is a side view of the cylinder assembly of the present invention;

[0025] Figure 4 This is a schematic diagram of the lubrication mechanism of the present invention;

[0026] Figure 5 This is a schematic diagram of the processing mechanism of the present invention;

[0027] Figure 6 This is one of the structural schematic diagrams of the process cover and movable cover of the present invention during disassembly;

[0028] Figure 7 This is the second schematic diagram of the structure of the processing cover and the movable cover during disassembly of the present invention;

[0029] Figure 8 This is a schematic diagram of the cleaning mechanism of the present invention;

[0030] Figure 9 This is a cross-sectional view of the extension seat of the present invention.

[0031] The components include: 1. Base; 2. Processing mechanism; 3. Cleaning mechanism; 4. Front cover; 5. Rear cover; 6. Cylinder; 7. Tie rod; 8. Solenoid valve; 9. Oil mist lubricator; 10. Air outlet pipe; 11. Support plate; 12. Fixing sleeve; 13. Air inlet pipe; 14. Air chamber; 15. Guide sleeve; 16. Piston body; 17. Buffer sleeve; 18. Piston rod;

[0032] 21. Treatment hood; 22. Movable hood; 23. Exhaust pipe; 24. Fixed plate; 25. Screw; 26. Sealing strip; 27. Activated carbon; 28. Movable plate; 29. ​​Sealing plate;

[0033] 31. Extension seat; 32. Positioning sleeve; 33. Positioning rod; 34. Movable seat; 35. Nut; 36. Guide hole; 37. Inclined cavity; 38. Oil reservoir; 39. Cleaning sleeve; 310. Discharge knob. Detailed Implementation

[0034] 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.

[0035] Please see Figure 1 , Figure 2 and Figure 3 A cylinder with internal lubrication function, comprising:

[0036] The base 1 has a cylinder assembly and a lubrication mechanism on its top. The lubrication mechanism includes a solenoid valve 8 connected to one side of the cylinder assembly, an oil mist lubricator 9 connected to one side of the solenoid valve 8, and support plates 11 fixedly installed on both sides of the oil mist lubricator 9. The support plates 11 are fixedly connected to the top of the base 1.

[0037] The base 1 serves as the mounting foundation for the entire cylinder, providing stable support for the cylinder assembly and lubrication mechanism. In the lubrication mechanism, the solenoid valve 8 is connected to the cylinder assembly and can control the gas flow direction and on / off state. The oil mist lubricator 9 connected to one side can atomize the lubricating oil and mix it with compressed air. The oil mist lubricator 9 is fixed to the base 1 by the support plate 11 to ensure structural stability during operation. The stable installation of the base 1 ensures the structural stability of the entire cylinder during operation. The oil mist lubricator 9 works in conjunction with the solenoid valve 8 to allow the atomized lubricating oil to enter the cylinder with the airflow, realizing automatic lubrication of moving parts, reducing wear of parts, and extending the service life of the cylinder.

[0038] refer to Figure 4 - Figure 7The processing mechanism 2 is located on one side of the solenoid valve 8. Two air outlet pipes 10 are connected to one side of the solenoid valve 8, and each of the two air outlet pipes 10 is equipped with a processing mechanism 2. The processing mechanism 2 includes a processing cover 21 connected to the bottom of the air outlet pipe 10. Activated carbon 27 is placed inside the processing cover 21. A detachable movable cover 22 is provided on one side of the processing cover 21, and the movable cover 22 is fixedly connected to the activated carbon 27. An exhaust pipe 23 is connected to the bottom side of the processing cover 21. The activated carbon 27 and the air outlet pipe 10... Matching the movable cover 22, movable plates 28 are fixedly installed on both sides of the movable cover 22, and fixed plates 24 are fixedly installed on both sides of the treatment cover 21. A screw 25 is fixedly installed on one side of the fixed plate 24. The screw 25 is inserted into the movable plate 28, and the screw 25 extends to one side of the movable plate 28 and is screwed with a nut. A sealing strip 26 is fixedly installed on one side of the movable cover 22, and a groove for installing the sealing strip 26 is provided on one side of the treatment cover 21. A sealing plate 29 matching the treatment cover 21 is provided on one side inside the movable cover 22.

[0039] The processing unit 2 is connected to the solenoid valve 8 via the exhaust pipe 10 to receive the gas discharged from the cylinder. After the gas enters the processing hood 21, the activated carbon 27 inside adsorbs and filters the oil mist, impurities, etc. in the gas. The purified gas is discharged through the exhaust pipe 23. The movable hood 22 and the processing hood 21 are detachably connected by the movable plate 28, the fixed plate 24, the screw 25, and the nut. The sealing strip 26 and the sealing plate 29 enhance the sealing of the connection between the two. The activated carbon 27 effectively purifies the pollutants in the exhaust gas and avoids environmental pollution. The detachable movable hood 22 design facilitates the periodic replacement of the activated carbon 27 to ensure continuous purification effect. The sealing strip 26 and the sealing plate 29 prevent gas leakage without treatment and improve purification efficiency and reliability.

[0040] For further reference Figure 1 , Figure 8 and Figure 9 The cylinder assembly includes a front cover 4 and a rear cover 5 fixedly installed on the top of the base 1. Multiple tie rods 7 and a cylinder body 6 are fixedly installed between the front cover 4 and the rear cover 5. A piston body 16 is provided inside the cylinder body 6. A piston rod 18 is fixedly installed at one end of the piston body 16. The piston rod 18 extends to one side of the rear cover 5 and is provided with a cleaning mechanism 3. Air chambers 14 are opened inside the front cover 4 and the rear cover 5. An air inlet pipe 13 is connected to the top of the two air chambers 14. Both air inlet pipes 13 are connected to a solenoid valve 8. Two sets of fixing sleeves 12 are fixedly installed on the outer wall of the tie rod 7. A support seat is fixedly installed between each set of fixing sleeves 12. A connecting plate is fixedly installed between the support seat and the solenoid valve 8. Buffer sleeves 17 are fixedly installed on both sides of the piston body 16. Both buffer sleeves 17 are fixedly installed on the outer wall of the piston rod 18. Guide sleeves 15 that match the two buffer sleeves 17 are fixedly installed on the opposite sides of the front cover 4 and the rear cover 5.

[0041] The front cover 4 and the rear cover 5 are fixed by the tie rod 7, forming the mounting frame of the cylinder body 6. The piston body 16 is pushed by the compressed air in the air chamber 14 inside the cylinder body 6 to reciprocate, driving the piston rod 18 to extend and retract. The intake pipe 13 introduces the oil-mist compressed air delivered by the solenoid valve 8 into the air chamber 14. The fixing sleeve 12 and the support seat fix the solenoid valve 8 through the connecting plate. The buffer sleeve 17 cooperates with the guide sleeve 15 to reduce the impact when the piston moves to both ends. The tie rod 7 ensures the structural strength of the cylinder body 6. The cooperation between the piston body 16 and the piston rod 18 realizes the power output of the cylinder. The oil-mist compressed air simultaneously realizes the drive and lubrication, simplifying the structure. The buffer sleeve 17 and the guide sleeve 15 reduce the impact of movement, ensure the smooth operation, and improve the operating accuracy of the equipment.

[0042] Furthermore, such as Figure 8 As shown, the cleaning mechanism 3 includes an extension seat 31 fixedly installed on one side of the rear end cover 5. A detachable movable seat 34 is provided on one side of the extension seat 31. A scraping assembly for scraping the outer wall of the piston rod 18 is provided between the extension seat 31 and the movable seat 34. A collection assembly for collecting the scraped oil is provided at the bottom of the extension seat 31. A positioning sleeve 32 is provided on one side of the extension seat 31. Both the extension seat 31 and the movable seat 34 are fitted onto the outer wall of the piston rod 18. The scraping assembly includes a cleaning sleeve 39 fixedly installed on one side of the movable seat 34. The cleaning sleeve 39 is inclined. An inclined cavity 37 for inserting the cleaning sleeve 39 is provided on one side of the extension seat 31. The cleaning sleeve 39 is attached to the outer wall of the piston rod 18. Based on this, the extension seat 31 of the cleaning mechanism 3 is fixed to the rear end cover 5. The movable seat 34 is detachably connected to the extension seat 31 via the positioning rod 33 and the nut 35. Both are fitted onto the outer wall of the piston rod 18. In the scraping assembly, the inclined cleaning sleeve 39 is fixed to the movable seat 34, inserted into the inclined cavity 37 of the extension seat 31 and attached to the outer wall of the piston rod 18. It scrapes away surface oil stains as the piston rod 18 reciprocates. The detachable movable seat 34 facilitates the replacement and maintenance of the cleaning sleeve 39. The inclined cleaning sleeve 39 fits tightly with the piston rod 18 to ensure efficient scraping of oil stains and avoid the accumulation of oil stains affecting the movement accuracy and sealing performance of the piston rod 18.

[0043] Furthermore, such as Figure 9As shown, the collection assembly includes a guide hole 36 at the top of the inclined cavity 37, an oil storage shell 38 fixedly installed at the bottom of the extension base 31, a discharge pipe connected to the bottom of the oil storage shell 38, a discharge knob 310 rotatably installed at the bottom of the discharge pipe, and multiple annularly distributed positioning rods 33 fixedly installed on one side of the extension base 31. Each positioning rod 33 has a thread on one side. A movable base 34 is inserted into the multiple positioning rods 33, and multiple nuts 35 screwed into the threads are provided on one side of the movable base 34. Based on this, in the collection assembly, the guide hole 36 guides the oil scraped from the inclined cavity 37 into the oil storage shell 38 for centralized collection. The discharge pipe and discharge knob 310 at the bottom of the oil storage shell 38 can control the discharge of oil. The guide hole 36 and the oil storage shell 38 work together to achieve effective collection of oil, avoiding oil dripping and contaminating the equipment and environment. The discharge knob 310 facilitates regular cleaning of the collected oil, improving equipment maintenance convenience and keeping the working environment clean.

[0044] The overall working principle of this invention is as follows:

[0045] The device uses base 1 as its mounting foundation. The cylinder assembly serves as the core actuator to achieve reciprocating motion. A lubrication mechanism provides lubrication, a processing mechanism 2 is responsible for gas purification, and a cleaning mechanism 3 maintains the cleanliness of the piston rod 18. All parts work together to ensure the normal operation of the cylinder and solve problems inherent in traditional cylinders. The air chambers 14 inside the front cover 4 and rear cover 5 are connected to a solenoid valve 8 via an intake pipe 13. The solenoid valve 8 controls the direction of compressed air intake. When compressed air enters one side of the air chamber 14 through the solenoid valve 8 and intake pipe 13, it pushes the piston body 16 to move within the cylinder body 6, thereby causing the piston rod 18 to extend or retract. The other side of the air chamber 14... The gas inside 4 is discharged through the corresponding passage, realizing the reciprocating motion of the piston rod 18. The buffer sleeves 17 on both sides of the piston body 16 cooperate with the guide sleeves 15 on the front cover 4 and the rear cover 5 to reduce the impact when the piston moves to both ends and ensure smooth movement. The oil mist atomizer 9 connected to one side of the solenoid valve 8 can atomize the lubricating oil, mix it with the compressed air, and enter the air chamber 14 through the air inlet pipe 13. The atomized lubricating oil enters the cylinder 6 with the compressed air to lubricate the friction parts such as the piston body 16 and the inner wall of the cylinder 6, the piston rod 18 and the guide sleeve 15, etc., reduce wear, and improve the service life of the equipment. The oil mist atomizer 9 is supported by... Plate 11 is fixed to base 1 to ensure stability during operation. The exhaust gas generated during cylinder operation is guided by solenoid valve 8 to two outlet pipes 10, and then enters the treatment hood 21 of the treatment mechanism 2. Activated carbon 27 inside the treatment hood 21 adsorbs and filters oil mist, water vapor, and other impurities in the exhaust gas. The purified gas is discharged through exhaust pipe 23. The movable hood 22 and treatment hood 21 are detachably connected by movable plate 28, fixed plate 24, screw 25, and nut, facilitating periodic replacement of activated carbon 27. Sealing strip 26 and sealing plate 29 enhance the sealing of treatment hood 21, ensuring that all gas undergoes purification treatment. When the piston rod 18 reciprocates, the cleaning sleeve 39 on one side of the movable seat 34 in the cleaning mechanism 3 adheres to its outer wall. Because the cleaning sleeve 39 is inclined and inserted into the inclined cavity 37 of the extension seat 31, it can effectively scrape off the oil stains attached to the surface of the piston rod 18. The scraped oil stains flow into the oil storage shell 38 at the bottom of the extension seat 31 through the guide hole 36 at the top of the inclined cavity 37 for collection. Rotating the discharge knob 310 can discharge the collected oil stains through the discharge pipe. The extension seat 31 and the movable seat 34 are detachably connected by the positioning rod 33 and the nut 35, which makes it easy to disassemble the movable seat 34 to replace the worn cleaning sleeve 39 and ensure the cleaning effect.

[0046] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cylinder with internal lubrication function, characterized in that, include: A base (1) is provided with a cylinder assembly and a lubrication mechanism on its top. The lubrication mechanism includes a solenoid valve (8) connected to one side of the cylinder assembly. An oil mist lubricator (9) is connected to one side of the solenoid valve (8). Support plates (11) are fixedly installed on both sides of the oil mist lubricator (9). The support plates (11) are fixedly connected to the top of the base (1). A processing mechanism (2) is located on one side of the solenoid valve (8). Two air outlet pipes (10) are connected to one side of the solenoid valve (8). A processing mechanism (2) is provided on one side of each of the two exhaust pipes (10). The processing mechanism (2) includes a processing cover (21) connected to the bottom of the exhaust pipe (10). Activated carbon (27) is provided inside the processing cover (21). A detachable movable cover (22) is provided on one side of the processing cover (21). The movable cover (22) is fixedly connected to the activated carbon (27). An exhaust pipe (23) is connected to one side of the bottom of the processing cover (21). The activated carbon (27) is matched with the exhaust pipe (10). The cylinder assembly includes a front cover (4) and a rear cover (5) fixedly mounted on the top of the base (1). A plurality of tie rods (7) and a cylinder body (6) are fixedly mounted between the front cover (4) and the rear cover (5). A piston body (16) is provided inside the cylinder body (6). A piston rod (18) is fixedly mounted at one end of the piston body (16). The piston rod (18) extends to one side of the rear cover (5) and is provided with a cleaning mechanism (3). Both the front cover (4) and the rear cover (5) have air chambers (14) inside. The top of each of the two air chambers (14) is connected to an air inlet pipe (13), and both air inlet pipes (13) are connected to a solenoid valve (8). The outlet pipe (10) is connected to the side of the solenoid valve (8) away from the inlet pipe (13), and the oil mist lubricator (9) is connected to the inlet end of the solenoid valve (8) away from the inlet pipe (13). The cleaning mechanism (3) includes: an extension seat (31) fixedly installed on one side of the rear end cover (5), a detachable movable seat (34) provided on one side of the extension seat (31), a scraping assembly for scraping the outer wall of the piston rod (18) provided between the extension seat (31) and the movable seat (34), a collection assembly for collecting the scraped oil stains provided at the bottom of the extension seat (31), and a positioning sleeve (32) provided on one side of the extension seat (31). The extension seat (31) and the movable seat (34) are both fitted onto the outer wall of the piston rod (18); the scraping assembly... The assembly includes a cleaning sleeve (39) fixedly installed on one side of the movable seat (34), the cleaning sleeve (39) being inclined, and an inclined cavity (37) for inserting the cleaning sleeve (39) being provided on one side of the extension seat (31), the cleaning sleeve (39) being attached to the outer wall of the piston rod (18); the collection assembly is: a guide hole (36) opened at the top of the inclined cavity (37), an oil storage shell (38) fixedly installed at the bottom of the extension seat (31), a discharge pipe connected to the bottom of the oil storage shell (38), and a discharge knob (310) rotatably installed at the bottom of the discharge pipe.

2. A cylinder with internal lubrication function according to claim 1, characterized in that: Movable plates (28) are fixedly installed on both sides of the movable cover (22), and fixed plates (24) are fixedly installed on both sides of the processing cover (21). A screw (25) is fixedly installed on one side of the fixed plate (24). The screw (25) is inserted into the movable plate (28), and the screw (25) extends to one side of the movable plate (28) and is screwed with a nut.

3. A cylinder with internal lubrication function according to claim 1, characterized in that: A sealing strip (26) is fixedly installed on one side of the movable cover (22), and a groove for installing the sealing strip (26) is provided on one side of the treatment cover (21). A sealing plate (29) matching the treatment cover (21) is provided on one side inside the movable cover (22).

4. A cylinder with internal lubrication function according to claim 1, characterized in that: Two sets of fixing sleeves (12) are fixedly installed on the outer wall of the pull rod (7). A support seat is fixedly installed between each set of fixing sleeves (12). A connecting plate is fixedly installed between the support seat and the solenoid valve (8).

5. A cylinder with internal lubrication function according to claim 1, characterized in that: Both sides of the piston body (16) are fixedly installed with buffer sleeves (17), and both buffer sleeves (17) are fixedly installed on the outer wall of the piston rod (18). The front end cover (4) and the rear end cover (5) are fixedly installed with guide sleeves (15) that match the two buffer sleeves (17).

6. A cylinder with internal lubrication function according to claim 1, characterized in that: The extension seat (31) has a plurality of annularly distributed positioning rods (33) fixedly installed on one side. Each of the positioning rods (33) has a thread on one side. The movable seat (34) is inserted into the plurality of positioning rods (33), and the movable seat (34) has a plurality of nuts (35) screwed into the threads on one side.

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