Air cylinder with internal lubricating function

Abstract

The invention relates to the technical field of air cylinders, and discloses an air cylinder with an internal lubricating function, comprising: a base, the top of which 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, and one side of the electromagnetic valve is connected with an atomized lubricator. The treatment mechanisms are located on one side of the electromagnetic valve, two air outlet pipes are connected to one side of the electromagnetic valve, the treatment mechanisms are arranged on one sides of the two air outlet pipes, each treatment mechanism comprises a treatment cover connected to the bottom of the corresponding air outlet pipe, activated carbon is arranged in the treatment cover, and a detachable movable cover is arranged on one side of the treatment cover; by arranging the treatment mechanism, after gas generated in the working process of the air cylinder enters the treatment cover through the gas outlet pipe, activated carbon in the treatment mechanism can effectively adsorb and filter oil mist, water vapor and other harmful impurities in the gas, and the purified gas is exhausted through the exhaust pipe; the problem of environmental pollution caused by direct emission of untreated exhaust gas of a traditional air cylinder is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air cylinders, in particular to an air cylinder with internal lubrication function. BACKGROUND

[0002] As a cylindrical metal machine part that guides the linear reciprocating motion of the piston, the air cylinder is the core component of energy conversion and mechanical action in the industrial field. Its development can be traced back to ancient simple energy conversion devices. It was laid the foundation during the industrial revolution with the application of steam engines. With the progress of internal combustion engines and pneumatic technology, it has become modernized. Today, it is powered by compressed air or hydraulic pressure and is widely used in manufacturing automation production lines, logistics and warehousing sorting, construction machinery action control, food packaging, printing and other fields.

[0003] In the actual application scene of the air cylinder, gas will inevitably be discharged during its operation. However, the traditional air cylinder structure design often ignores the effective treatment of these discharged gases. These gases may contain oil mist, water vapor and other impurities brought out from the inside of the air cylinder. If they are directly discharged into the environment, on the one hand, they will pollute the surrounding working environment and affect the health of the operators. On the other hand, they also do not meet the requirements of modern industrial production for environmental protection and cleanliness. The existing air cylinder lacks a mechanism specifically designed for purifying the discharged gas, and cannot filter and adsorb harmful substances in the gas, so the gas is directly discharged without treatment, causing many problems. At the same time, during the reciprocating motion of the piston rod of the air cylinder, some oil stains will be brought out from the inside of the air cylinder. If these oil stains adhere to the outer wall of the piston rod, they will not only affect the normal movement of the piston rod and increase the frictional resistance, but also may cause corrosion on the surface of the piston rod, reducing the service life and working accuracy of the air cylinder. The traditional air cylinder structure cannot effectively scrape and clean the outer wall of the piston rod, and there is no suitable scraping assembly to timely remove the oil stains on the piston rod, so the oil stains continue to accumulate, thereby causing a series of problems such as movement jamming and seal failure, seriously affecting the overall performance and use effect of the air cylinder. SUMMARY

[0004] The purpose of the present application is to provide an air cylinder with internal lubrication function, which solves the problem that the existing air cylinder lacks a mechanism specifically designed for purifying the discharged gas and cannot filter and adsorb harmful substances in the gas.

[0005] In order to solve the above technical problems, the present application provides the following technical solutions: An air cylinder with internal lubrication function, comprising: 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 cylinder assembly, one side of the electromagnetic valve is connected with an oil atomizer, both sides of the oil atomizer are fixedly installed with support plates, and the support plates are fixedly connected with the top of the base; The processing mechanism is located at one side of the electromagnetic valve, two gas outlet pipes are connected to one side of the electromagnetic valve, and the processing mechanism is arranged on one side of each of the two gas outlet pipes, the processing mechanism comprises a processing cover connected to the bottom of the gas outlet pipe, activated carbon is arranged in the processing cover, a detachable movable cover is arranged on one side of the processing cover, the movable cover is fixedly connected with the activated carbon, an exhaust pipe is connected to one side of the bottom of the processing cover, and the activated carbon is matched with the gas outlet pipe.

[0006] Preferably, the movable cover is fixedly installed with movable plates on both sides, the processing cover is fixedly installed with fixed plates on both sides, the fixed plates are fixedly installed with screw rods on one side, the screw rods are inserted into the movable plates, and the screw rods extend to one side of the movable plates and are screwed with nuts.

[0007] Preferably, the movable cover is fixedly installed with a sealing strip on one side, the processing cover is provided with a groove for installing the sealing strip on one side, and a sealing plate matched with the processing cover is arranged on one side in the movable cover.

[0008] Preferably, the cylinder assembly comprises a front end cover and a rear end cover fixedly installed on the top of the base, a plurality of pull rods and cylinder bodies are fixedly installed between the front end cover and the rear end cover, the inside of the cylinder body is provided with a piston main body, the piston main body is fixedly installed with a piston rod at one end, and the piston rod extends to one side of the rear end cover and is provided with a cleaning mechanism.

[0009] Preferably, the inside of each of the front end cover and the rear end cover is provided with an air cavity, the inside top of each of the two air cavities is connected with an air inlet pipe, the two air inlet pipes are connected with the electromagnetic valve, the outer wall of the pull rod is fixedly installed with two groups of fixed sleeves, a support seat is fixedly installed between each group of the fixed sleeves, and a connecting plate is fixedly installed between the support seat and the electromagnetic valve.

[0010] Preferably, the piston main body is fixedly installed with a buffer sleeve on both sides, the two buffer sleeves are fixedly installed on the outer wall of the piston rod, and the opposite sides of the front end cover and the rear end cover are fixedly installed with guide sleeves matched with the two buffer sleeves.

[0011] Preferably, the cleaning mechanism comprises an extension seat fixedly installed on one side of the rear end cover, the extension seat is provided with a detachable movable seat on one side, a scraping assembly for scraping the outer wall of the piston rod is arranged between the extension seat and the movable seat, a collecting assembly for collecting the oil stains scraped is arranged on the bottom of the extension seat, a positioning sleeve is arranged on one side of the extension seat, and the extension seat and the movable seat are sleeved on the outer wall of the piston rod.

[0012] Preferably, the scraping assembly comprises a cleaning sleeve fixedly installed on one side of the movable seat, the cleaning sleeve is inclined, one side of the extension seat is provided with an inclined cavity for inserting the cleaning sleeve, and the cleaning sleeve is attached to the outer wall of the piston rod.

[0013] Preferably, the collection assembly comprises a flow guide hole provided at the top of the inclined cavity, the bottom of the extension seat is fixedly installed with an oil storage shell, the bottom of the oil storage shell is connected with a discharge pipe, and the bottom of the discharge pipe is rotatably installed with a discharge knob.

[0014] Preferably, a plurality of annularly distributed positioning rods are fixedly installed on one side of the extension seat, one side of each of the positioning rods is provided with a thread, the movable seat is inserted with the positioning rods, and one side of the movable seat is provided with a plurality of nuts screwed with the threads.

[0015] Compared with the prior art, the present application has the following beneficial effects: 1、The processing mechanism is arranged, when the gas generated in the working process of the cylinder enters the processing cover through the gas 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, and the purified gas is discharged through the exhaust pipe, solving the environmental pollution problem caused by the direct discharge of the exhaust gas of the traditional cylinder without treatment, improving the working environment quality, protecting the health of the operators, meeting the modern industrial environmental protection requirements, in addition, the movable cover and the processing cover in the processing mechanism are detachably connected, through the cooperation of the movable plate, the fixed plate, the screw and the nut, the disassembly and assembly of the movable cover can be quickly realized, when the activated carbon adsorption capacity is saturated, the movable cover and the fixedly connected activated carbon can be conveniently taken out for replacement or cleaning, ensuring that the exhaust treatment effect always remains efficient, avoiding the problem of decreased purification capacity caused by the inactivation of the activated carbon, at the same time, the cooperation of the sealing strip on one side of the movable cover and the groove of the processing cover, and the matching design of the sealing plate in the movable cover and the processing cover can effectively enhance the sealing property between the processing cover and the movable cover, prevent the untreated gas from leaking from the gap without being filtered by the activated carbon, ensure that the gas is discharged after being treated by the activated carbon, and greatly improve the efficiency and reliability of the exhaust gas purification; 2、The scraping assembly in the cleaning mechanism can effectively scrape the outer wall of the piston rod, the cleaning sleeve is inclined and attached to the outer wall of the piston rod, when the piston rod reciprocates, the cleaning sleeve can completely scrape off the oil stains attached to its surface, avoid the oil stains from affecting the movement precision of the piston rod or increasing the friction resistance, ensure the smooth operation of the cylinder, the collecting assembly of the cleaning mechanism guides the scraped oil stains into the oil storage shell through the flow guide hole for centralized collection, and then discharges the collected oil stains through the discharge pipe and the discharge knob, avoids the oil stains from dropping and polluting the equipment and the working environment, facilitates the recycling or centralized treatment of the oil stains, improves the maintenance convenience of the equipment, prolongs the service life of the cleaning mechanism, and prolongs the service life of the cleaning mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the whole structure of the application; Figure 2 It is a sectional view of the cylinder assembly of the application; Figure 3 It is a side view of the cylinder assembly of the application; Figure 4 It is a schematic view of the lubricating mechanism of the application; Figure 5 It is a schematic view of the processing mechanism of the application; Figure 6 It is a schematic view of the processing cover and the movable cover when they are disassembled; Figure 7 It is a schematic view of the processing cover and the movable cover when they are disassembled; Figure 8 It is a schematic view of the cleaning mechanism of the application; Figure 9 It is a sectional view of the extension seat of the application.

[0017] 1, base; 2, processing mechanism; 3, cleaning mechanism; 4, front end cover; 5, rear end cover; 6, cylinder body; 7, pull rod; 8, electromagnetic valve; 9, oil atomizer; 10, air outlet pipe; 11, support plate; 12, fixed sleeve; 13, air inlet pipe; 14, air cavity; 15, guide sleeve; 16, piston main body; 17, buffer sleeve; 18, piston rod; 21, processing cover; 22, movable cover; 23, exhaust pipe; 24, fixed plate; 25, screw rod; 26, sealing strip; 27, activated carbon; 28, movable plate; 29, sealing plate; 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

[0018] 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.

[0019] Please see Figure 1 , Figure 2 and Figure 3 A cylinder with internal lubrication function, comprising: 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. 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. refer to Figure 4 - Figure 7The processing mechanism 2 is located on one side of the electromagnetic valve 8, two gas outlet pipes 10 are connected to one side of the electromagnetic valve 8, and the processing mechanism 2 is arranged on one side of the two gas outlet pipes 10. The processing mechanism 2 comprises a processing cover 21 connected to the bottom of the gas outlet pipe 10, the inside of the processing cover 21 is provided with activated carbon 27, one side of the processing cover 21 is provided with a detachable movable cover 22, the movable cover 22 is fixedly connected with the activated carbon 27, one side of the bottom of the processing cover 21 is connected with an exhaust pipe 23, the activated carbon 27 is matched with the gas outlet pipe 10, two sides of the movable cover 22 are fixedly installed with movable plates 28, two sides of the processing cover 21 are fixedly installed with fixed plates 24, one side of the fixed plate 24 is fixedly installed with a screw rod 25, the screw rod 25 is inserted with the movable plate 28, and the screw rod 25 extends to one side of the movable plate 28 and is screwed with a nut, one side of the movable cover 22 is fixedly installed with a sealing strip 26, one side of the processing cover 21 is provided with a groove for installing the sealing strip 26, and one side of the inside of the movable cover 22 is provided with a sealing plate 29 matched with the processing cover 21; The processing mechanism 2 is connected with the electromagnetic valve 8 through the gas outlet pipe 10 to receive the exhaust gas of the cylinder. The activated carbon 27 in the processing cover 21 adsorbs and filters the oil mist and impurities in the gas, and the purified gas is discharged through the exhaust pipe 23. The movable cover 22 and the processing cover 21 are detachably connected through the movable plate 28, the fixed plate 24, the screw rod 25 and the nut. The sealing strip 26 and the sealing plate 29 enhance the sealing performance of the connection between the movable cover 22 and the processing cover 21. The activated carbon 27 effectively purifies the pollutants in the exhaust gas to avoid environmental pollution. The detachable movable cover 22 facilitates the regular replacement of the activated carbon 27 to ensure the continuous purification effect. The sealing strip 26 and the sealing plate 29 prevent the leakage of untreated gas to improve the purification efficiency and reliability. In addition, referring to Figure 1 , Figure 8 and Figure 9 , the cylinder assembly comprises a front end cover 4 and a rear end cover 5 fixedly installed on the top of the base 1, a plurality of draw bars 7 and cylinder bodies 6 are fixedly installed between the front end cover 4 and the rear end cover 5, the inside of the cylinder body 6 is provided with a piston body 16, one end of the piston body 16 is fixedly installed with a piston rod 18, the piston rod 18 extends to one side of the rear end cover 5 and is provided with a cleaning mechanism 3, the inside of the front end cover 4 and the rear end cover 5 is provided with a gas cavity 14, the inside of the two gas cavities 14 is connected with an air inlet pipe 13, the two air inlet pipes 13 are connected with the electromagnetic valve 8, the outer wall of the draw bar 7 is fixedly installed with two groups of fixed sleeves 12, a support seat is fixedly installed between each group of fixed sleeves 12, a connecting plate is fixedly installed between the support seat and the electromagnetic valve 8, the two sides of the piston body 16 are fixedly installed with a buffer sleeve 17, the two buffer sleeves 17 are fixedly installed on the outer wall of the piston rod 18, and the opposite sides of the front end cover 4 and the rear end cover 5 are fixedly installed with a guide sleeve 15 matched with the two buffer sleeves 17; The front end cover 4 and the rear end cover 5 are fixed through the pull rod 7 to form a mounting frame of the cylinder body 6, the piston body 16 reciprocates in the cylinder body 6 under the driving of the compressed air in the air cavity 14, the piston rod 18 is extended and retracted, the intake pipe 13 guides the compressed air with oil mist delivered by the electromagnetic valve 8 into the air cavity 14, the fixed sleeve 12 and the support seat fix the electromagnetic 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 pull rod 7 is connected to ensure the structural strength of the cylinder body 6; the cooperation of the piston body 16 and the piston rod 18 realizes the power output of the air cylinder; the compressed air with oil mist realizes driving and lubrication at the same time, simplifies the structure; the buffer sleeve 17 and the guide sleeve 15 reduce the movement impact, ensure the running stability, and improve the equipment running precision; Further, as shown in Figure 8 The cleaning mechanism 3 includes an extension seat 31 fixedly installed on one side of the rear end cover 5, one side of the extension seat 31 is provided with a detachable movable seat 34, a scraping assembly for scraping the outer wall of the piston rod 18 is arranged between the extension seat 31 and the movable seat 34, the bottom of the extension seat 31 is provided with a collecting assembly for collecting the scraped oil dirt, and one side of the extension seat 31 is provided with a positioning sleeve 32; the extension seat 31 and the movable seat 34 are both sleeved on 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, and one side of the extension seat 31 is provided with an inclined cavity 37 for inserting the cleaning sleeve 39; 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 on the rear end cover 5, the movable seat 34 is detachably connected with the extension seat 31 through the positioning rod 33 and the nut 35, and both are sleeved on the outer wall of the piston rod 18; in the scraping assembly, the inclined cleaning sleeve 39 is fixed on the movable seat 34, is inserted into the inclined cavity 37 of the extension seat 31 and is attached to the outer wall of the piston rod 18, and is scraped with the piston rod 18 reciprocating to remove the surface oil dirt; the detachable movable seat 34 facilitates the replacement and maintenance of the cleaning sleeve 39; the inclined cleaning sleeve 39 is closely attached to the piston rod 18, which ensures efficient scraping of the oil dirt and avoids the accumulation of the oil dirt affecting the movement precision and sealing performance of the piston rod 18 Further, as shown in Figure 9As shown, the collection assembly comprises a flow guide hole 36 opened at the top of the inclined cavity 37, the bottom of the extension seat 31 is fixedly installed with an oil storage shell 38, the bottom of the oil storage shell 38 is connected with a discharge pipe, the bottom of the discharge pipe is rotatably installed with a discharge knob 310, one side of the extension seat 31 is fixedly installed with a plurality of annularly distributed positioning rods 33, one side of the plurality of positioning rods 33 is provided with a thread, the movable seat 34 is inserted with the plurality of positioning rods 33, and one side of the movable seat 34 is provided with a plurality of nuts 35 which are screwed with the threads; based on this, in the collection assembly, the flow guide hole 36 guides the oil stains scraped in the inclined cavity 37 into the oil storage shell 38 for centralized collection, the discharge pipe at the bottom of the oil storage shell 38 and the discharge knob 310 can control the discharge of the oil stains, the flow guide hole 36 cooperates with the oil storage shell 38 to realize effective collection of the oil stains, so as to avoid the oil stains from dropping to pollute the equipment and the environment; the discharge knob 310 facilitates regular cleaning of the collected oil stains, improves the equipment maintenance convenience, and keeps the working environment clean; The working principle of the whole application is as follows: The device takes the base 1 as the installation basis, the cylinder assembly as the core executive component realizes the reciprocating motion, the lubricating mechanism provides the lubricating guarantee, the processing mechanism 2 is responsible for the gas purification, the cleaning mechanism 3 maintains the piston rod 18 clean, each part cooperates to complete the normal work of the cylinder and solves the problems existing in the traditional cylinder, the air cavity 14 inside the front end cover 4 and the rear end cover 5 is connected with the electromagnetic valve 8 through the air inlet pipe 13, the electromagnetic valve 8 controls the direction of compressed air, when the compressed air enters one side air cavity 14 through the electromagnetic valve 8, the air inlet pipe 13, the piston main body 16 is pushed to move in the cylinder body 6, and then the piston rod 18 is driven to extend or retract;The gas in the other side air cavity 14 is discharged through the corresponding passage, realizing the reciprocating motion of the piston rod 18, the buffer sleeve 17 on both sides of the piston main body 16 cooperates with the guide sleeve 15 on the front end cover 4 and the rear end cover 5, which can reduce the impact when the piston moves to both ends, ensure the stability of movement, the oil atomizer 9 connected with one side of the electromagnetic valve 8 can atomize the lubricating oil, and after mixing with the compressed air, it enters the air cavity 14 through the air inlet pipe 13, the atomized lubricating oil enters the inside of the cylinder body 6 with the compressed air, lubricates the friction parts such as the piston main body 16 and the inner wall of the cylinder body 6, the piston rod 18 and the guide sleeve 15, reduces the wear, and prolongs the service life of the equipment, the oil atomizer 9 is fixed on the base 1 through the support plate 11, to ensure the stability during work, the exhaust gas generated during the operation of the cylinder is guided to the two air outlet pipes 10 through the electromagnetic valve 8, and then enters the processing cover 21 of the processing mechanism 2, the activated carbon 27 in the processing cover 21 adsorbs and filters the oil mist, water vapor and other impurities in the exhaust gas, and the purified gas is discharged through the exhaust pipe 23, the movable cover 22 and the processing cover 21 are detachably connected through the movable plate 28, the fixed plate 24, the screw 25 and the nut, which is convenient for replacing the activated carbon 27 regularly;The sealing strip 26 and the sealing plate 29 enhance the sealing property of the processing cover 21, to ensure that all the gas is purified, when the piston rod 18 reciprocates, the cleaning sleeve 39 on one side of the movable seat 34 in the cleaning mechanism 3 is attached to the outer wall, because the cleaning sleeve 39 is inclined and inserted into the inclined cavity 37 of the extension seat 31, the oil stains attached to the surface of the piston rod 18 can be effectively scraped off, the scraped oil stains flow into the oil storage shell 38 at the bottom of the extension seat 31 through the flow guide hole 36 at the top of the inclined cavity 37 for collection, and the oil stains collected can be discharged through the discharge pipe by rotating the discharge knob 310, the extension seat 31 and the movable seat 34 are detachably connected through the positioning rod 33 and the nut 35, which is convenient for disassembling the movable seat 34 to replace the worn cleaning sleeve 39, to ensure the cleaning effect.

[0020] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, 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: The 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) connected to one side of the solenoid valve (8), and a support plate (11) fixedly installed on both sides of the oil mist lubricator (9). The support plate (11) is fixedly connected to the top of the base (1). The 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). The processing mechanism (2) is provided on one side of each of the two air outlet pipes (10). The processing mechanism (2) includes a processing cover (21) connected to the bottom of the air outlet 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 air outlet pipe (10).

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: 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).

5. A cylinder with internal lubrication function according to claim 4, characterized in that: 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). 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 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).

6. A cylinder with internal lubrication function according to claim 4, 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).

7. A cylinder with internal lubrication function according to claim 4, characterized in that: 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 component is provided between the extension seat (31) and the movable seat (34) to scrape the outer wall of the piston rod (18). A collection component is provided at the bottom of the extension seat (31) to collect the scraped oil. 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).

8. A cylinder with internal lubrication function according to claim 7, characterized in that: 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) fits against the outer wall of the piston rod (18).

9. A cylinder with internal lubrication function according to claim 8, characterized in that: The collection assembly includes a guide hole (36) opened at the top of the inclined cavity (37), an oil storage shell (38) is fixedly installed at the bottom of the extension seat (31), a discharge pipe is connected to the bottom of the oil storage shell (38), and a discharge knob (310) is rotatably installed at the bottom of the discharge pipe.

10. A cylinder with internal lubrication function according to claim 7, 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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