Rolling mill with self-lubricating function

Abstract

The invention relates to the technical field of rolling mills, in particular to a rolling mill with a self-lubricating function. Comprising a rack; the rolling-off module is fixedly arranged on the rack in a horizontal state, and the rolling-off module is provided with an upper roller and a lower roller which can be used for rolling off a plate as well as an upper rolling ring and a lower rolling ring which are coaxially and fixedly arranged outside the upper roller and the lower roller respectively; the guide module is horizontally arranged on one side of the rolling-off module; the self-lubricating module is coaxially arranged outside the upper roller and is close to a rolling ring of the upper roller; the self-lubricating module is provided with a fixing ring, an oil supply unit capable of conveying oil liquid towards the upper roller, a second return guide unit capable of patrolling and scraping the oil liquid and a circulation guide unit capable of linearly conducting the oil liquid to the plate. The temperature control module is fixedly arranged on one side of the fixing ring and is close to the bottom of the upper roller; the device can be automatically started according to the rolling breaking temperature and can precisely lubricate and cool the rolling breaking point.

Description

Technical Field

[0001] This invention relates to the field of rolling mill technology, specifically to a rolling mill with self-lubricating function. Background Technology

[0002] Rolling mills, as key equipment in the metal processing industry, are mainly used for the continuous rolling of metal billets to obtain metal sheets, profiles, or strips with the required dimensions and properties. During the rolling process, there is high temperature, high pressure, and high-speed relative motion between the rolls and the workpiece, which easily generates severe friction and wear. In order to reduce frictional resistance and reduce wear on the rolls and bearings, existing technologies typically use external lubrication systems, including spray lubrication, circulating oil lubrication, or oil-air mixed lubrication.

[0003] However, traditional external lubrication methods have the following drawbacks: 1. The supply of lubricating oil depends on external delivery pipelines and pumps, resulting in a complex system structure, large space occupation, and high maintenance workload; 2. The lubricating oil is unevenly distributed in the rolling zone, especially under high temperature and high speed conditions, the oil film is easily damaged, leading to local dry friction and increasing wear on parts; 3. External lubrication results in lubricating oil waste and environmental pollution, requiring regular oil replacement and cleaning, leading to high operating costs; 4. Covering lubrication easily leads to limited plate advance time and slippage. Summary of the Invention

[0004] To address the aforementioned issues, a self-lubricating rolling mill is proposed. By proposing a rolling mill that can precisely activate self-lubrication based on the rolling break temperature, the technical problems of uneven oil distribution, complex structure, and inability to achieve precise lubrication and cooling of the rolling break point in existing rolling mills during the lubrication process are solved.

[0005] To address the problems of existing technologies, this invention provides a rolling mill with self-lubricating function, comprising: a frame; a cutting module, which is horizontally fixedly mounted on the frame, the cutting module having an upper roll and a lower roll capable of cutting the sheet metal, and an upper rolling ring and a lower rolling ring respectively coaxially fixed outside the upper roll and the lower roll; a guiding module, horizontally mounted on one side of the cutting module, for guiding the sheet metal into the space between the upper roll and the lower roll; a self-lubricating module, coaxially mounted outside the upper roll and close to the rolling ring of the upper roll; the self-lubricating module having a fixing ring, an oil supply unit capable of transmitting oil towards the upper roll, a second return guide unit capable of scraping the oil, and a circulation guide unit capable of linearly transmitting the oil to the sheet metal; and a temperature control module, fixedly mounted on one side of the fixing ring and close to the bottom of the upper roll.

[0006] Preferably, the self-lubricating module further includes a fixing frame capable of fixing the fixing ring to the frame; the fixing ring is coaxially fixed to the outside of the upper roll via the fixing frame; the oil supply unit is fixed to the outside of the fixing ring and the oil supply end passes through the fixing ring and faces the upper roll; the second return guide unit is fixedly fixed to the inside of the fixing ring in a horizontal state and the return guide end is close to the roll; the circulation guide unit is vertically fixed to the front end of the fixing ring.

[0007] Preferably, the oil supply unit is provided with a nozzle capable of continuously spraying oil toward the upper rolling ring, an oil tank capable of continuously supplying oil to the nozzle, and a back-suction element capable of drawing the oil in the circulation unit back into the oil tank.

[0008] Preferably, the back suction element consists of a back suction pipe and a suction pump disposed in the middle of the back suction pipe; the suction end of the back suction pipe is connected to the circulation unit; the discharge end of the back suction pipe is connected to the oil tank and disposed near the top of the oil tank.

[0009] Preferably, the second guide unit is provided with a scraper plate capable of scraping and agglomerating the oil on the side wall of the upper rolling ring and a guide plate disposed at the front end of the scraper plate capable of guiding the oil; the included angle between the guide plate and the scraper plate is set at a right angle, and the guide end of the guide plate is closely attached to the upper rolling ring and communicates with the scraper plate.

[0010] Preferably, the guiding unit is provided with a storage chamber for storing oil, a filter element for filtering the oil in the storage chamber, and an outlet element for exporting the oil in the storage chamber.

[0011] Preferably, the outlet element is a drip head.

[0012] Preferably, the temperature control module is a temperature sensor.

[0013] The advantages of this invention compared to the prior art are: 1. This invention uses a temperature control module to monitor the working temperature of the upper rolling ring in real time. When the detected value exceeds a preset threshold, the upper rolling ring is cooled down by the oil supply unit. This enables instant cooling and sufficient lubrication under high-load continuous rolling conditions, avoiding the problems of lubrication delay and uncontrolled temperature rise caused by traditional manual oiling methods.

[0014] 2. This invention achieves both oil suction and oil supply functions simultaneously through the back suction element under the same power source, forming a stable negative pressure circulation. Under negative pressure, the oil in the tank is automatically pushed to the nozzle for spraying, while excess oil is recovered through the second guide unit and circulation unit, realizing a closed-loop oil supply system, which significantly reduces energy consumption and lubricant waste.

[0015] 3. By combining the scraper plate and the guide plate, the present invention can directionally scrape off and recover the oil film adhering to the side wall of the upper rolling ring during the rotation of the roll. The scraped oil is collected by the guide plate and introduced into the circulation unit to achieve precise oil recovery, avoiding the problems of lubricating oil splashing, waste and environmental pollution in the traditional structure. Attached Figure Description

[0016] Figure 1 A three-dimensional rolling mill with self-lubricating function Figure 1 .

[0017] Figure 2 yes Figure 1 A magnified view of part A.

[0018] Figure 3 A three-dimensional rolling mill with self-lubricating function Figure 2 .

[0019] Figure 4 It is a three-dimensional rolling mill upper roll with self-lubricating function, self-lubricating module and temperature control module. Figure 1 .

[0020] Figure 5 This is a side view of the upper roll, self-lubricating module, and temperature control module in a rolling mill with self-lubricating function.

[0021] Figure 6 yes Figure 5 Sectional view of section BB.

[0022] Figure 7 yes Figure 6 A magnified view of a portion of point C.

[0023] Figure 8 This is an exploded 3D view of the upper roll, self-lubricating module, and temperature control module in a rolling mill with self-lubricating function.

[0024] Figure 9 yes Figure 8 A magnified view of a portion of point D.

[0025] Figure 10 It is a three-dimensional rolling mill upper roll with self-lubricating function, self-lubricating module and temperature control module. Figure 2 .

[0026] The numbers on the map are: 1. Rack; 2. Rolling cut module; 21. Upper roll; 22. Lower roll; 23. Upper rolling ring; 24. Lower rolling ring; 3. Bootstrapping module; 4. Self-lubricating module; 41. Fixing ring; 42. Oil supply unit; 421. Nozzle; 422. Oil tank; 423. Back suction element; 4231. Back suction pipe; 4232. Suction pump; 43. First return guide unit; 431. Scraper; 432. Drainage plate; 433. Fixing plate; 434. Opening; 44. Circulation unit; 441. Storage chamber; 442. Filter element; 443. Outlet element; 444. Drip head; 45. Fixing frame; 46. Second return guide unit; 5. Temperature control module; 51. Temperature sensor. Detailed Implementation

[0027] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0028] See Figures 1 to 10 As shown: A rolling mill with self-lubricating function includes: a frame 1; a cutting module 2, which is horizontally fixed on the frame 1, the cutting module 2 having an upper roll 21 and a lower roll 22 for cutting the sheet metal, and an upper rolling ring 23 and a lower rolling ring 24 coaxially fixed outside the upper roll 21 and the lower roll 22 respectively; a guide module 3, horizontally disposed on one side of the cutting module 2, for guiding the sheet metal into the space between the upper roll 21 and the lower roll 22; a self-lubricating module 4, coaxially disposed outside the upper roll 21 and close to the rolling ring of the upper roll 21; the self-lubricating module 4 having a fixing ring 41, an oil supply unit 42 for transmitting oil towards the upper roll 21, a second return guide unit 43 for scraping the oil, and a circulation guide unit 44 for linearly transmitting the oil to the sheet metal; and a temperature control module 5, fixedly disposed on one side of the fixing ring 41 and close to the bottom of the upper roll 21.

[0029] When the metal sheet is rolled using the rolling module 2, an external power supply is first connected to drive the rolling module 2 into operation. The drive system drives the upper roll 21 and the lower roll 22 to rotate synchronously, thereby forming a stable rolling force field. The operator places the sheet to be rolled smoothly on the guide module 3 in a horizontal direction and feeds the sheet between the upper roll 21 and the lower roll 22 along the guide path. Under the clamping action of the upper roll 21 and the lower roll 22, the sheet undergoes plastic deformation under pressure and is precisely rolled off.

[0030] During the sheet metal rolling process, the contact friction between the upper roll 21 and the lower roll 22 causes a rapid temperature increase. The temperature control module 5 monitors and provides feedback on the roll surface temperature changes in real time, based on the dynamic changes in the thickness of the sheet metal to be rolled. When the detected temperature exceeds a preset critical value, the oil supply unit 42 in the self-lubricating module 4 automatically starts, uniformly spraying lubricating oil onto the surface of the upper roll 21, forming a continuous oil film layer on the roll surface. This oil film absorbs and carries away excess heat during rolling, preventing dimensional deviations caused by thermal expansion of the roll; it also significantly reduces the rolling friction coefficient, thereby improving the flatness of the rolled surface and extending the roll's service life.

[0031] When the upper roll 21 rotates to the position of the second return unit 43, the residual oil on its surface is recovered through the second return unit 43, and the scraped oil is guided into the circulation unit 44. The circulation unit 44 filters and redistributes the recovered oil, and guides the oil back to the surface of the plate at the front end of the rolling path along a preset flow path, thereby achieving pre-lubrication treatment of the area to be rolled. Through this circulating oil supply method, automatic recovery and reuse of oil can be achieved without increasing the consumption of additional lubricating media.

[0032] Through the above process, the rolling mill achieves adaptive lubrication and temperature control of the roll surface, maintaining a stable lubrication state under high-load continuous operation while effectively reducing energy consumption and maintenance frequency. The synergistic effect of the self-lubricating module 4, the second guide unit 43, and the circulating guide unit 44 significantly improves rolling stability and cutting quality, extends equipment service life, and achieves green and energy-saving continuous rolling production.

[0033] Each of the lower rolling rings 24 is further provided with a second return guide unit 46, which is capable of scraping back the oil outside the lower rolling ring 24. The second return guide unit 46 has the same structure as the second return guide unit 43; it is used to scrape back and collect the oil outside the lower rolling ring 24.

[0034] See Figure 4 and Figure 5 As shown: The self-lubricating module 4 further includes a fixing frame 45 that can fix the fixing ring 41 to the frame 1; the fixing ring 41 is coaxially fixed to the outside of the upper roll 21 through the fixing frame 45; the oil supply unit 42 is fixed to the outside of the fixing ring 41 and the oil supply end passes through the fixing ring 41 and faces the rolling ring of the upper roll 21; the second return unit 43 is fixed to the inside of the fixing ring 41 in a horizontal state and the return end is close to the rolling ring; the circulation unit 44 is vertically fixed to the front end of the fixing ring 41.

[0035] When the temperature control unit detects that the surface cutting temperature of the upper roll 21 and the lower roll 22 exceeds a preset threshold, the system automatically sends a temperature control signal to activate the oil supply unit 42. The oil injection component in the oil supply unit 42 immediately activates, uniformly spraying lubricating oil mist or fine oil onto the working surface of the upper roll 21 through the oil injection pipeline, forming a continuous and uniform oil film layer on the surface of the upper rolling ring 23. This oil film not only effectively absorbs and conducts the heat generated by rolling friction during the rolling contact process, achieving rapid heat dissipation, but also reduces the coefficient of friction between the metal and the roll, thereby playing a role in preventing adhesion, reducing friction, and stabilizing rolling pressure.

[0036] As the upper roll 21 continues to rotate to the position of the second return unit 43, some of the lubricating oil adhering to its surface is collected and scraped back through the oil return structure of the second return unit 43. The second return unit 43 guides the recovered oil into the circulation unit 44. After the circulation unit 44 performs sedimentation, filtration and quantitative distribution of the oil, it transports a small amount of purified oil along a specific flow path to the surface of the plate to be rolled, so that a pre-lubricating film layer is formed on the plate before it enters the rolls, thereby further reducing the contact friction between the plate and the rolls and improving the quality of the rolled surface.

[0037] Through the aforementioned coordinated control, a closed-loop self-lubricating and temperature control system is formed, consisting of the oil supply unit 42, the second return guide unit 43, and the circulation guide unit 44. This system enables automatic oil injection, recovery, and reuse based on temperature changes, effectively reducing the operating temperature of the rolls, suppressing thermal expansion deformation, and decreasing lubricant consumption and the frequency of manual maintenance. This achieves highly efficient, energy-saving, and environmentally friendly automatic lubrication and intelligent temperature control.

[0038] See Figure 5 and Figure 8 As shown: The oil supply unit 42 is provided with a nozzle 421 that can continuously spray oil toward the upper rolling ring 23, an oil tank 422 that can continuously supply oil to the nozzle 421, and a back suction element 423 that can draw the oil in the circulation unit 44 back into the oil tank 422.

[0039] The nozzle 421 is fixedly disposed on one side of the fixed ring 41 and the spray end passes through the fixed ring 41 and is disposed toward the upper rolling ring 23; the oil tank 422 is fixedly disposed vertically at the inlet end of the nozzle 421; the back suction element 423 is disposed between the circulation unit 44 and the oil tank 422 and the suction end and the discharge end are respectively connected to the circulation unit 44 and the oil tank 422.

[0040] When the temperature control module 5 detects in real time that the surface temperature of the upper rolling ring 23 rises to a preset temperature threshold, it determines that the ring is in a working state requiring cooling and lubrication. At this time, the suction element 423 automatically starts, generating a negative pressure zone, thereby drawing the oil in the circulation unit 44. When the oil storage in the circulation unit 44 is insufficient or in an unloaded state, the negative pressure generated by the suction element 423 will be transmitted along the oil path to the inside of the oil tank 422, causing the air pressure in the cavity of the oil tank 422 to decrease relatively, thereby forming a pressure difference at the top of the oil tank 422. This pressure difference causes the oil in the oil tank 422 to be pushed into the oil injection pipeline and evenly discharged through the nozzle 421, and directionally sprayed onto the surface of the upper rolling ring 23 to achieve simultaneous oil injection lubrication and cooling treatment of the upper rolling ring 23.

[0041] During the oil spraying process, a uniform dynamic oil film is formed on the surface of the upper rolling ring 23. This oil film can absorb and conduct the heat generated by friction during the rolling contact process, while reducing the coefficient of friction between the metal and the rolling ring, effectively inhibiting adhesion, scoring, or wear caused by high temperature. Part of the sprayed oil is driven by the rotation of the upper rolling ring 23 to form a backflow, and is collected by the second return guide unit 43 and re-enters the circulation system, realizing the recycling and closed-loop management of the oil.

[0042] Through the above control, the linkage control between the temperature control module 5, the suction element 423, and the oil tank 422 is realized. This enables automatic oil suction and injection supply using the negative pressure conduction principle without the need for external pump pressure. This effectively simplifies the lubrication system structure, improves response speed and oil delivery stability, and ensures both immediate cooling and sufficient lubrication under high-temperature conditions.

[0043] See Figure 8 As shown: The back suction element 423 consists of a back suction pipe 4231 and a suction pump 4232 disposed in the middle of the back suction pipe 4231; the suction end of the back suction pipe 4231 is connected to the guided unit 44; the discharge end of the back suction pipe 4231 is connected to the oil tank 422 and disposed near the top of the oil tank 422.

[0044] When it is necessary to drive the nozzle 421 to spray oil and to back-pump the oil in the circulation unit 44, an external power supply is first connected to drive the suction pump 4232 into working condition. After the suction pump 4232 starts under the drive of the motor, a stable negative pressure area is formed in the pump chamber. This negative pressure acts on the oil circuit of the circulation unit 44 to suck and recover the residual oil therein; on the other hand, this negative pressure is transmitted to the inside of the oil tank 422 through the oil pipeline, so that a relative pressure difference is formed inside the oil tank 422.

[0045] Under this pressure difference, the oil in the oil tank 422 is thrust and transported along the oil supply pipeline, then guided to the nozzle 421 through the oil guide channel of the spray assembly. Driven by fluid pressure, the nozzle 421 sprays out a fine oil mist or stream, directionally coating the surface of the upper rolling ring 23 to form a uniform and continuous lubricating oil film. The oil spraying process and the back-suction process are carried out simultaneously, enabling the system to both cool and lubricate the upper rolling ring 23 within the same working cycle, and to achieve automatic oil recovery and circulation supply, maintaining a closed-loop balance in oil usage.

[0046] Through the above structure, the suction pump 4232 can simultaneously perform the dual functions of oil suction and oil supply under a single power source, significantly simplifying the power configuration and oil circuit layout of the self-lubricating system. This not only improves the stability and response speed of oil delivery but also reduces energy consumption and leakage risks, ensuring the continuity and intelligent control of the lubrication process.

[0047] See Figure 9 As shown: The second guide unit 43 is provided with a scraper plate 431 capable of scraping and agglomerating the oil on the side wall of the upper rolling ring 23 and a guide plate 432 disposed at the front end of the scraper plate 431 capable of guiding the oil; the included angle between the guide plate 432 and the scraper plate 431 is set at a right angle, and the guide end of the guide plate 432 is closely attached to the upper rolling ring 23 and communicates with the guide plate 432.

[0048] The second guide unit 43 further includes a fixing plate 433 for horizontally fixing the scraper plate 431 to the inner wall of the fixing ring 41, a liquid blocking plate 435 for limiting and guiding the oil into the guide plate 432, and an opening 434 opened on the outside of the guide end of the guide plate 432 to prevent the oil from overflowing.

[0049] The scraper plate 431 is a horizontally arranged rectangular plate, the width of which is slightly smaller than the gap between the upper roll 21 and the fixed ring 41. This ensures that the scraper plate 431 can move relative to the side wall surface of the upper roll 23 during operation, thereby effectively scraping and guiding the oil adhering to the side wall of the upper roll 23. The scraper plate 431 is precisely positioned to achieve dynamic oil recovery through mechanical contact without affecting the normal rotation of the roll.

[0050] As the upper rolling ring 23 rotates, it carries the oil to the scraping position. The oil film adhering to the side wall of the upper rolling ring 23 is first peeled off by the leading edge of the scraper plate 431. The peeled oil, under the action of gravity and guidance, collects through the lower surface of the scraper plate 431 and flows into the guide plate 432 connected to it. The guide plate 432 is an inclined guide structure with a smooth guide surface and guide channels inside, used to stably transport the recovered oil to the oil inlet of the circulation unit 44, realizing the directional recovery and reuse of the oil.

[0051] To prevent oil from overflowing during the scraping process, the outer side of the drainage end of the drainage plate 432 is provided with an opening 434 limiting structure. The shape and position of the opening 434 are optimized so that when the oil is scraped off the outer surface of the upper rolling ring 23, the flow direction of the oil can be effectively controlled and the lubricating oil can be prevented from splashing to the outside.

[0052] See Figure 6 and Figure 7 As shown: The guiding unit 44 is provided with a storage chamber 441 for storing oil, a filter element 442 for filtering the oil in the storage chamber 441, and an outlet element 443 for exporting the oil in the storage chamber 441.

[0053] The filter element 442 is a filter plate composed of multiple layers of filter paper.

[0054] During the oil supply and lubrication process of the upper rolling ring 23 via the oil supply unit 42, the lubricating oil sprayed onto the surface of the upper rolling ring 23, after completing its cooling and lubrication functions, gradually collects in the recovery area of ​​the second return unit 43 as the upper rolling ring 23 rotates. The oil guided by the second return unit 43 flows along a set flow path to the circulation unit 44, and upon entering this unit, it is first guided into the internal oil storage chamber 441. The storage chamber 441 is used to temporarily store the recovered oil for filtration, sedimentation, and redistribution.

[0055] After entering the storage chamber 441, the oil flows downwards under gravity and gradually settles to the bottom of the chamber. During this process, the oil first undergoes multi-stage physical filtration through filter elements 442 arranged within the storage chamber 441 to remove metal shavings, oxide particles, and impurities, thereby maintaining the cleanliness of the recovered oil. The filtered oil is then directed to the clean oil zone at the bottom of the storage chamber 441, forming an oil layer ready for reuse.

[0056] The suction end of the back-suction element 423 is connected to the bottom of the storage chamber 441. When the suction pump 4232 is started, the back-suction element 423, under its negative pressure, suctions the oil in the bottom clean oil zone. During the suction process, a stable local negative pressure zone is formed at the bottom of the storage chamber 441, which not only accelerates the flow of oil in the filter element 442, but also improves the filtration efficiency, so that the residual oil at the top is continuously attracted and dynamically purified. Through this gas-liquid synergistic pressure difference effect, efficient oil suction and regeneration circulation can be achieved without the need for an external high-pressure pump.

[0057] In addition, when the oil flows into the storage chamber 441, some of the oil can be intermittently discharged through the discharge channel of the discharge element 443 under the action of gravity, thereby pre-drawing a pre-lubrication line on the plate, that is, drawing an oil line on the plate to be rolled and cut by the rolling module 2.

[0058] Through the above structure, the storage chamber 441, filter element 442, back suction element 423, and outlet element 443 constitute an integrated self-lubricating circuit with functions of oil filtration, storage, negative pressure suction, and circulating outlet. This not only realizes the automatic recovery and re-filtration of lubricating oil, significantly reducing oil loss and the frequency of manual maintenance, but also ensures the cleanliness and stability of the oil supply system.

[0059] See Figure 10 As shown: The output element 443 is specifically a drip head 444.

[0060] The drip head 444 is used for quantitative discharge and flow stabilization control of the filtered oil. The outlet of the drip head 444 adopts a micro-orifice or conical flow-limiting structure design, which can automatically adjust the flow rate according to the oil viscosity and pressure difference, so that the discharged oil is discharged in a uniform and continuous drip state, thereby avoiding gas-liquid disturbance or oil waste caused by excessive instantaneous flow.

[0061] By designing the discharge element 443 as a drip head 444, quantitative, slow-release, and stable discharge of oil can be achieved, effectively preventing pulsating flow or leakage of oil during the discharge process. Simultaneously, this structure can maintain pressure balance within the system without increasing additional power, reducing oil evaporation and loss, and improving the reliability and operational continuity of the lubrication circulation system.

[0062] See Figure 10 As shown: The temperature control module 5 is specifically a temperature sensor 51.

[0063] The temperature sensor 51 is vertically disposed on the outside of the fixed ring 41 and passes through the fixed ring 41 toward the upper roll 21. The temperature sensor 51 is used to monitor the rolling temperature of the upper roll 23 in real time, thereby flexibly opening and closing the oil supply unit 42; thereby achieving the lubrication and cooling effect of the upper roll 23.

[0064] This invention can not only automatically start according to the rolling temperature, but also accurately lubricate and cool the rolling point.

[0065] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A rolling mill with self-lubricating function, characterized in that, include: frame; A cutting module is fixedly mounted horizontally on the frame. The cutting module is equipped with an upper roll and a lower roll capable of cutting the sheet metal, as well as an upper rolling ring and a lower rolling ring respectively coaxially fixed outside the upper roll and the lower roll. A guide module is horizontally positioned on one side of the rolling module to guide the sheet material between the upper and lower rolls; The self-lubricating module is coaxially disposed outside the upper roll and close to the rolling ring of the upper roll; the self-lubricating module is provided with a fixing ring, an oil supply unit that can transmit oil towards the upper roll, a second return guide unit that can scrape the oil, and a circulation guide unit that can linearly conduct the oil to the plate. The temperature control module is fixedly installed on one side of the fixing ring and near the bottom of the upper roller.

2. A rolling mill with self-lubricating function according to claim 1, characterized in that, The self-lubricating module also includes a fixing frame that can fix the fixing ring to the frame; The fixing ring is coaxially fixed to the outside of the upper roll via the fixing frame; The oil supply unit is fixedly installed on the outside of the fixed ring and the oil supply end passes through the fixed ring and is set towards the upper roller. The second return guide unit is fixedly installed horizontally inside the fixed ring, with the return guide end close to the rolling ring; The guiding unit is vertically fixed at the front end of the fixing ring.

3. A rolling mill with self-lubricating function according to claim 2, characterized in that, The oil supply unit is equipped with a nozzle capable of continuously spraying oil toward the upper rolling ring, an oil tank capable of continuously supplying oil to the nozzle, and a back-suction element capable of drawing the oil in the circulation unit back into the oil tank.

4. A rolling mill with self-lubricating function according to claim 3, characterized in that, The back suction element consists of a back suction pipe and a suction pump located in the middle of the back suction pipe; The suction end of the back suction tube is connected to the circulation unit; the discharge end of the back suction tube is connected to the oil tank and is located near the top of the oil tank.

5. A rolling mill with self-lubricating function according to claim 1, characterized in that, The second return guide unit is provided with a scraper plate that can scrape and gather the oil on the side wall of the upper rolling ring and a guide plate that is disposed at the front end of the scraper plate and can guide the oil. The angle between the diversion plate and the scraper plate is set at a right angle, and the diversion end of the diversion plate is closely attached to the upper rolling ring and communicates with the scraper plate.

6. A rolling mill with self-lubricating function according to claim 5, characterized in that, The circulation unit is equipped with a storage chamber for storing oil, a filter element for filtering the oil in the storage chamber, and an outlet element for exporting the oil from the storage chamber.

7. A rolling mill with self-lubricating function according to claim 6, characterized in that, The output element is specifically a drip head.

8. A rolling mill with self-lubricating function according to claim 1, characterized in that, The temperature control module is specifically a temperature sensor.

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