A seamless steel pipe cold rolling mill based on automatic lubrication

Abstract

This invention discloses an automatic lubrication-based cold rolling mill for seamless steel pipes, used to cool the seamless steel pipe billet and rolls during the cold rolling process. The cold rolling mill includes: a cold rolling mill body, comprising a feeding section, a cold rolling section, and a discharging section connected in sequence; and a mounting housing, detachably mounted on the cold rolling section. This invention relates to the field of steel pipe processing technology. This solution achieves precise lubrication through an adjustable lubrication mechanism: the lubrication regulator is slidably connected to the lubrication channel. Through the modular installation method of the mounting housing, the mill head of the cold rolling mill can drive the lubrication regulator to follow the movement. Multiple adjustable spray components are used to flexibly adjust the angle and position, covering the entire circumference of the billet and the rolls, achieving controllable flow rate, reducing wear, and solving the problems of incomplete coverage and concealed installation of traditional gooseneck pipes, which are inconvenient for maintenance. This improves cold rolling efficiency and equipment life.

Description

Technical Field

[0001] This invention relates to the field of steel pipe processing technology, specifically to a seamless steel pipe cold rolling mill based on automatic lubrication. Background Technology

[0002] Seamless steel pipes, with their hollow cross-section, high strength-to-weight ratio, and high-pressure resistance, are widely used in oil and gas transportation, chemical corrosive media transmission, high-pressure boiler superheaters, and mechanical hydraulic systems. Their processing technology is mainly divided into two categories: hot rolling and cold rolling. Hot-rolled pipes are produced through a piercing-rolling-sizing process, with outer diameters reaching hundreds of millimeters. Cold-rolled pipes are precision-machined using two-roll / three-roll mills, achieving an outer diameter accuracy of less than 6mm and a wall thickness control precision of 0.25mm. Their surface finish is superior to hot-rolled pipes, making them particularly suitable for precision mechanical structures, hydraulic cylinders, and aerospace applications.

[0003] In the current cold rolling process of seamless steel pipes, process lubrication plays a core role: it reduces energy consumption by decreasing the metal's resistance to deformation, while simultaneously cooling the rolls and reducing surface wear. Traditional lubrication relies on manual oil replenishment, which can easily lead to increased roll temperature, oil film rupture, and product surface defects due to operational delays. Automatic lubrication systems monitor the emulsion concentration, iron content, and conductivity in real time, and combine this with the formula for calculating the residual oil on the plate surface to achieve automatic ratio replenishment of rolling oil and demineralized water, avoiding concentration fluctuations caused by manual operation and improving the stability of plate quality.

[0004] However, the current automatic lubrication process for cold rolling mills still has significant drawbacks: First, existing lubrication equipment is inconvenient to maintain. Most cleaning systems are installed close to the cold rolling mechanism, and the cold rolling space of the cold rolling mill is small, making it difficult to disassemble and maintain. In addition, the pipelines used in cold rolling are usually narrow, which not only makes the lubrication pipelines prone to blockage, but also fails to cover the billet and roll positions, resulting in reduced production efficiency and increased maintenance costs. Second, the problem of lubricating oil contamination is prominent. Various processing powders and external dust can easily mix into the lubricating fluid, causing the lubricating fluid usage cost to increase.

[0005] In summary, existing technologies generally suffer from shortcomings such as insufficient coverage, poor pollution control effectiveness, and high maintenance complexity. Therefore, this case was developed to address these issues through in-depth research. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a seamless steel pipe cold rolling mill based on automatic lubrication, which solves the problems in the existing background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a seamless steel pipe cold rolling mill based on automatic lubrication, used to cool the seamless steel pipe billet and rolls during the cold rolling process, the seamless steel pipe cold rolling mill comprising:

[0008] The cold rolling mill body includes a feeding section, a cold rolling section, and a unloading section connected in sequence.

[0009] The mounting housing is detachably mounted on the cold rolling section;

[0010] An adjustable lubrication mechanism includes a lubrication channel, a lubrication regulator, and an adjustable spray assembly. The lubrication channel is detachably mounted on the cold rolling mill body. The lubrication regulator is located on the mounting housing and communicates with the lubrication channel. The adjustable spray assembly is a plurality of components evenly distributed on the lubrication regulator.

[0011] The cold rolling section is slidably provided with a cold rolling mill head, the mounting housing is connected to the cold rolling mill head, and the lubrication channel is in a sealed sliding fit with the lubrication regulator.

[0012] The lubrication channel is provided with a mounting base that is connected to the cold rolling mill body. The lubrication channel has an inlet and an outlet. A sliding plate is slidably provided on the outlet. A connector is provided on the sliding plate that is connected to the lubrication regulator.

[0013] A groove is provided on the side of the outlet near the lubrication regulator. The sliding plate is mounted on the groove and abuts against the outlet. The two ends of the groove are points A and B, respectively. The sliding plate can switch between points A and B. When the joint on the sliding plate is at point A or point B, the sliding plate can block the outlet.

[0014] The lubrication regulator includes a fixed ring seat, which is detachably connected to the mounting housing. The fixed ring seat has a closed ring groove, and a rotating ring seat is rotatably mounted on the closed ring groove. The closed ring groove and the rotating ring seat form an annular cavity.

[0015] The lubrication regulator further includes an adjusting gear set and an adjusting driver. The adjusting gear set is provided on the rotating ring seat. The adjusting gear set consists of a driven gear fitted on the rotating ring seat and a driving gear meshing with the driven gear. The adjusting driver is connected to the driving gear.

[0016] The adjustable spray assembly includes: an adjustable rotating base, an adjustable groove, an adjustable nozzle, and a rotating shaft;

[0017] The adjusting rotating seat is mounted on the rotating ring seat, and the adjusting rotating seat has an adjusting groove. The adjusting nozzle is movably mounted on the adjusting groove via a rotating shaft, and a control gear set is provided on the rotating shaft for adjusting the angle of the adjusting nozzle.

[0018] The axial direction of the rotating shaft is perpendicular to the axial direction of the rotating ring seat in the same plane.

[0019] The seamless steel pipe cold rolling mill also includes: a lubrication circulation mechanism;

[0020] The lubrication circulation mechanism includes: a lubrication storage tank, a lubrication mixer, and a lubrication control pump. The lubrication storage tank is connected to the lubrication control pump, the lubrication control pump is connected to the lubrication channel, and the lubrication mixer is installed in the lubrication storage tank.

[0021] The seamless steel pipe cold rolling mill also includes: a lubrication temperature control mechanism;

[0022] The lubrication temperature control mechanism includes a cooler, a temperature sensor, and a heat exchanger. The heat exchanger is connected to the lubrication control pump and the inlet of the lubrication channel, respectively. The temperature sensor is installed in the heat exchanger, and the cooler is installed in the heat exchanger.

[0023] The seamless steel pipe cold rolling mill also includes a cleaning and recycling system, installed on the lubrication regulator and connected to the lubrication storage tank, for recycling lubricating oil.

[0024] The cleaning and recycling system includes a cleaning and recycling seat, a separation component, a suction component, a recycling tank, and a recycling interface. The cleaning and recycling seat is detachably installed on the fixed ring seat. The cleaning and recycling seat is provided with a recycling tank. The separation component is detachably connected to the recycling tank. The bottom of the recycling tank is connected to a recycling interface, which is connected to the suction component. Beneficial effects

[0025] This invention provides a seamless steel pipe cold rolling mill based on automatic lubrication. It offers the following advantages: This solution achieves precise lubrication through an adjustable lubrication mechanism. The lubrication regulator is slidably connected to the lubrication channel. Through a modular installation method using the mill housing, the mill head can drive the lubrication regulator to follow the movement. Multiple adjustable spray components flexibly adjust the angle and position to cover the entire circumference of the billet and the rolls, achieving controllable flow and reducing wear. This solves the problems of incomplete coverage and concealed installation that make maintenance difficult with traditional gooseneck tubes, improving cold rolling efficiency and equipment lifespan. It also offers the following other advantages.

[0026] 1. The adjustable lubrication mechanism is slidably connected to the lubrication channel through the lubrication regulator, which drives the adjustable spray component on the rotating ring seat to rotate and adjust the angle. With the help of the adjusting gear set, the spray direction can be precisely controlled. This structure covers the entire circumference of the tube blank, which solves the problem of incomplete coverage and hidden installation of traditional gooseneck tubes, resulting in lubrication dead corners. It reduces roll wear, improves cold rolling uniformity, reduces surface defects caused by insufficient lubrication, and improves product qualification rate.

[0027] 2. The cleaning and recycling system intercepts processing powder and dust through the filter holes of the recycling plate and separation component. The suction component draws the filtered lubricating fluid back to the lubricating storage tank for recycling. This design reduces the mixing of external contaminants, lowers the frequency of lubricating fluid replacement and operating costs, avoids pipeline blockage problems, solves the cost increase and efficiency decrease caused by lubricating oil contamination, and achieves the dual benefits of environmental protection and economy.

[0028] 3. The lubrication temperature control mechanism controls the lubricating medium to a range slightly below room temperature through heat exchangers and coolers. Temperature sensors monitor and provide feedback in real time to avoid temperature fluctuations affecting billet performance or wasting energy. The lubrication channel is connected to the cold rolling mill body with a detachable mounting base. The fixed ring seat adopts a split design with a cover structure, which facilitates quick disassembly and maintenance, solves the maintenance difficulties caused by the narrow space in cold rolling, and reduces equipment downtime and maintenance costs. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the main structure of a seamless steel pipe cold rolling mill based on automatic lubrication as described in this invention.

[0030] Figure 2 This is a first three-dimensional structural schematic diagram of a seamless steel pipe cold rolling mill based on automatic lubrication as described in this invention.

[0031] Figure 3 This is a first top view of the structure of a seamless steel pipe cold rolling mill based on automatic lubrication as described in this invention.

[0032] Figure 4 This is a second top view schematic diagram of the seamless steel pipe cold rolling mill based on automatic lubrication described in this invention.

[0033] Figure 5 This is a second three-dimensional structural diagram of a seamless steel pipe cold rolling mill based on automatic lubrication as described in this invention.

[0034] Figure 6 This is a three-dimensional cross-sectional view of a seamless steel pipe cold rolling mill based on automatic lubrication, as described in this invention.

[0035] Figure 7 This is a three-dimensional schematic diagram of an adjustable lubrication mechanism for a seamless steel pipe cold rolling mill based on automatic lubrication, as described in this invention.

[0036] Figure 8 This is a partial side view of the cold rolling mill for seamless steel pipes based on automatic lubrication, as described in this invention.

[0037] Figure 9 This is a partial three-dimensional structural diagram of a seamless steel pipe cold rolling mill based on automatic lubrication as described in this invention.

[0038] Figure 10This is a partially enlarged schematic diagram of the adjustable spray assembly of a seamless steel pipe cold rolling mill based on automatic lubrication, as described in this invention.

[0039] In the diagram: 1. Cold rolling mill body; 2. Lubrication circulation mechanism; 3. Adjustable lubrication mechanism; 4. Lubrication temperature control mechanism; 5. Cleaning and recovery system; 6. Seamless steel tube billet; 11. Feeding section; 12. Cold rolling section; 13. Unloading section; 14. Cold rolling mill head; 15. Mounting housing; 21. Lubrication storage tank; 22. Lubrication mixer; 23. Lubrication control pump; 31. Lubrication channel; 32. Lubrication regulator; 33. Adjustable spray assembly; 41. Refrigerator; 42. Temperature sensor; 43. Heat exchanger; 51. Cleaning and recovery seat; 52. Separation assembly; 53. Suction. Components; 54. Recycling tank; 55. Recycling interface; 311. Mounting base; 312. Connector; 313. Outlet; 314. Sliding plate; 315. Inlet; 321. Fixed ring seat; 322. Rotating ring seat; 323. Closed ring groove; 324. Adjusting gear set; 325. Adjusting driver; 331. Adjusting rotary seat; 332. Adjusting groove; 333. Adjusting nozzle; 334. Rotating shaft; 335. Control gear set; 521. Recycling plate; 522. Buckle; 523. Filter hole; 531. Oil extraction port; 532. Oil extraction pipe; 533. Oil pump. Detailed Implementation

[0040] 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.

[0041] Please see Figure 1-10 The present invention provides an implementation scheme: In the current cold rolling process of seamless steel pipes, since the steel billet needs to reduce its diameter little by little under the action of the rollers, the common seamless steel pipes need to use a lubrication system to cool and lubricate the steel pipe and the pressure rollers during the cold rolling process. This reduces energy consumption by reducing the metal deformation resistance, while cooling the rollers and reducing surface wear.

[0042] Currently, automatic lubrication systems are often installed alongside the billet and rolls. During installation, gooseneck tubes are typically aligned with the billet and rolls. However, common gooseneck tubes are prone to clogging, have low flow rates, and can only serve one side or one position, failing to serve the entire billet. Furthermore, most are installed in concealed spaces, making them difficult to observe.

[0043] According to the instruction manual Figure 1-10As can be seen, in order to solve the above problems, this application discloses a seamless steel pipe cold rolling mill based on automatic lubrication, including: a cold rolling mill body 1, which is an existing multi-roll pipe cold rolling mill, and a cold rolling mechanism is provided on the cold rolling mill body 1. The cold rolling mechanism performs the cold rolling of seamless steel pipe by using a multi-roll working method.

[0044] The automatic lubrication unit is connected to the cold rolling mill body 1. Through its connection with the cold rolling mill body 1, the automatic lubrication unit performs cold rolling lubrication and cooling on the seamless steel pipe through cyclic operation. The automatic lubrication unit includes a lubrication circulation mechanism 2, an adjustable lubrication mechanism 3, a lubrication temperature control mechanism 4, and a cleaning and recycling system 5.

[0045] The lubrication circulation mechanism 2 is installed on one side of the cold rolling mill body 1. The lubrication temperature control mechanism 4 is connected to the lubrication circulation mechanism 2. The adjustable lubrication mechanism 3 is connected to the lubrication temperature control mechanism 4. The cleaning and recycling system 5 is located at the lower part of the cold rolling mechanism.

[0046] The lubrication circulation mechanism 2 serves as the circulating power to bring the lubricating medium into the lubrication temperature control mechanism 4. The lubrication temperature control mechanism 4 controls the temperature of the lubricating medium, lowering its temperature. It should be noted that the lubrication temperature control mechanism 4 lowers the lubricating medium to slightly below room temperature to achieve the purpose of lubrication while cooling the rolls without cooling them to an excessively low temperature. This avoids shrinkage of the seamless steel tube blank caused by the temperature and also avoids energy waste caused by excessively low temperatures. The adjustable lubrication mechanism 3 is installed in close contact with the cold rolling mill body 1 and connected to the automatic lubrication unit. It pumps coolant from the automatic lubrication unit as the lubricating medium to cool the seamless steel tube blank 6 and the rolls during the cold rolling process. The cleaning and recycling system 5 is connected to the lubrication circulation mechanism 2 and is used to recycle the lubricating fluid.

[0047] The adjustable lubrication mechanism 3 includes a detachable lubrication channel 31 mounted on the cold rolling mill body 1. A lubrication regulator 32 is slidably mounted on the lubrication channel 31. An adjustable spray assembly 33 is mounted on the lubrication regulator 32. The adjustable spray assembly 33 is used to cool the cold rolling mill and the seamless steel tube billet 6. The angle of the adjustable spray assembly 33 is adjustable to correspond to the position of the seamless steel tube and the roll. The lubrication regulator 32 and the end of the lubrication channel 31 are slidably connected, so that the lubrication regulator 32 can control the angle of the adjustable spray assembly 33 to correspond to different positions.

[0048] The lubrication channel 31 is a pipe structure. A mounting base 311 is provided on one side of the lubrication channel 31 and is detachably connected to the cold rolling mill body 1. Specifically, the mounting base 311 is connected to the cold rolling mill body 1 by bolts.

[0049] The lubrication regulator 32 adopts a ring structure and includes a fixed ring seat 321 mounted on the cold rolling mill body 1. A rotating ring seat 322 is rotatably mounted on the fixed ring seat 321. The fixed ring seat 321 is provided with a closed ring groove 323, and the rotating ring seat 322 is nested in the closed ring groove 323. The fixed ring seat 321 is also provided with an adjusting gear set 324. The adjusting gear set 324 consists of a driven gear fitted on the rotating ring seat 322 and a driving gear meshing with the driven gear. An adjusting driver 325 and the adjusting gear set 322 are provided on one side of the fixed ring seat 321. The 24-linkage adjustment driver 325 can be either a manual or an automatic adjuster. When an automatic adjuster is used, it can control the rotating ring seat 322 to rotate at a constant speed on the fixed ring seat 321, so as to spray lubrication on the lubrication parts more evenly and comprehensively. The adjusting spray assembly 33 is installed on the rotating ring seat 322. The adjusting driver 325 drives the adjusting gear set 324 to rotate, so that the adjusting gear set 324 drives the rotating ring seat 322 to rotate on the closed ring groove 323, thereby causing the rotating ring seat 322 to drive the adjusting spray assembly 33 on it to change position and adjust the spray angle.

[0050] In some embodiments of this application, a mounting base 311 is provided on the lubrication channel 31 and connected to the cold rolling mill body 1. The lubrication channel 31 has an inlet 315 and an outlet 313. A sliding plate 314 is slidably provided on the outlet 313. A connector 312 is provided on the sliding plate 314 and connected to the lubrication regulator 32. A feed pipe is connected to the connector 312 and communicates with the cavity between the closed annular groove 323 and the rotating ring seat 322. A sliding groove is opened on the side of the outlet 313 near the lubrication regulator 32. Plate 314 is mounted on the slide groove and abuts against the outlet 313. The two ends of the slide groove are points A and B, respectively. The sliding plate 314 can switch between points A and B. When the connector 312 on the sliding plate 314 is at point A or point B, the sliding plate 314 can cover the outlet 313. Through the cooperation between the sliding plate 314 and the slide groove, the outlet 313 can be completely covered no matter how the sliding plate 314 slides, so as to avoid leakage and realize the sealed sliding cooperation between the lubrication regulator 32 and the lubrication channel 31.

[0051] In some embodiments of this application, the adjustable spray assembly 33 includes an adjustable rotating seat 331, which is connected to a rotating ring seat 322. An adjusting groove 332 is provided on the adjusting rotating seat 331, which is connected to the adjusting nozzle 333 and the inner wall of the closed ring groove 323. The adjusting nozzle 333 is movably connected to the two walls of the adjusting groove 332 via a rotating shaft 334. A control gear set 335 is provided on the rotating shaft 334 to fix the angle of the adjusting nozzle 333. The adjusting shaft 334 drives the adjusting nozzle 333 to rotate by adjusting the control gear set 335. After the adjustment is in place, the adjusting nozzle 333 is connected to the adjusting groove 332, and the adjusting groove 332 is connected to the rotating ring seat 322, forming a passage for the spraying of lubricating oil.

[0052] In some embodiments of this application, the lubrication circulation mechanism 2 includes a lubrication storage tank 21, a lubrication mixer 22, and a lubrication control pump 23. The lubrication storage tank 21 is installed on one side of the cold rolling mill body 1. The lubrication mixer 22 is installed on the lubrication storage tank 21. The lubrication control pump 23 is connected to the lubrication storage tank 21. The lubrication storage tank 21 is a cylindrical hollow tank used to store the lubrication medium. The lubrication medium is preferably mineral base oil mixed with additives such as rust inhibitors, emulsifiers, and extreme pressure agents. The lubrication mixer 22 is installed on the lubrication storage tank 21 and is driven by a geared motor. The drive end of the geared motor is connected to the mixing shaft through a coupling. The geared motor drives the mixing shaft to mix the additives and mineral base oil. After mixing, the mixture is pumped into the lubrication channel 31 by the lubrication control pump 23. The inlet 315 of the lubrication channel 31 is connected to the lubrication control pump 23.

[0053] In some embodiments of this application, the lubrication temperature control mechanism 4 includes a cooler 41, a temperature sensor 42, and a heat exchanger 43. The heat exchanger 43 is installed between the inlet 315 of the lubrication channel 31 and the lubrication control pump 23. The temperature sensor 42 is installed on the heat exchanger 43. The cooler 41 is connected to the heat exchanger 43. The cooler 41 is preferably an air cooler 41. The high-speed airflow passes through the fins of the heat exchanger 43, causing the heat of the lubricating medium flowing through the heat exchanger 43 to be carried away, thereby making the lubricating medium have a lower temperature. The temperature sensor 42 is located at the outlet 313 of the heat exchanger 43. The temperature is detected by the temperature sensor 42, and the power of the heat exchanger 43 is controlled to achieve temperature control of the lubricating oil.

[0054] In some embodiments of this application, the cleaning and recovery system 5 is connected to the adjustable lubrication mechanism 3. The lubricating oil sprayed out by the adjustable lubrication mechanism 3 is collected by the cleaning and recovery system 5. The cleaning and recovery system 5 includes a cleaning and recovery seat 51, which is detachably mounted on a fixed ring seat 321. A separation component 52 is detachably provided on the cleaning and recovery seat 51. The separation component 52 is used to filter the lubricating oil. Then, a suction component 53 is provided on the cleaning and recovery seat 51 to draw the filtered lubricating oil into the lubrication storage tank 21.

[0055] In some embodiments of this application, the cleaning and recycling seat 51 is an arc-shaped plate with a recycling groove 54 on it. The recycling groove 54 corresponds to the upper adjustable lubrication mechanism 3. The separation component 52 is assembled on the recycling groove 54. A recycling interface 55 is provided on one side of the recycling groove 54. The suction component 53 is connected to the recycling interface 55.

[0056] In some embodiments of this application, the separation component 52 includes a recycling plate 521 and a buckle 522. The recycling plate 521 is inserted into the recycling groove 54. The recycling groove 54 is provided with a slot that cooperates with the buckle 522. The buckle 522 is an elastic buckle. After the recycling plate 521 is inserted into the recycling groove 54, the buckle 522 locks the slot. Then, the recycling plate 521 is provided with filter holes 523 in a matrix.

[0057] In some embodiments of this application, the suction assembly 53 includes an oil extraction port 531, an oil extraction pipe 532, and an oil pump 533. The oil pump 533 generates a negative pressure, and the oil separated by the separation assembly 52 is then extracted by the oil extraction pipe 532 and fed into the lubrication storage tank 21.

[0058] In some embodiments of this application, the cold rolling mill 1 consists of a feeding section 11, a cold rolling section 12, and a discharge section 13. The cold rolling section 12 is connected to the feeding section 11 and the discharge section 13 respectively. The feeding section 11 is pushed into the cold rolling section 12 by a linear motor. Multiple rolls are provided on the cold rolling section 12, and a mounting housing 15 is provided on the cold rolling section 12. The mounting housing 15 is used to house the multiple rolls and reciprocates under the action of the power device of the cold rolling section 12, thereby enabling the multiple rolls to cold roll the seamless steel tube blank 6 that passes through. The linear motor is also provided with a rotation mechanism to control the indexing rotation of the seamless steel tube blank 6, so that the cold rolling is more uniform. The fixed ring seat 321 adopts a cover structure and is separately connected to the mounting housing 15. This ensures that the adjustable lubrication mechanism 3 can be quickly disassembled and repaired, which is convenient for later maintenance and use. The discharge section 13 is arranged opposite to the feeding section 11.

[0059] The operating method or process of this automatic lubrication cold rolling mill is as follows: First, install and debug the equipment. Install the lubrication circulation mechanism 2 on one side of the cold rolling mill body 1. The lubrication medium, a mixture of mineral base oil and additives such as rust inhibitors, emulsifiers, and extreme pressure agents, is stored in the lubrication storage tank 21. After the lubrication mixer 22 completes the mixing, it is pumped into the lubrication channel 31 by the lubrication control pump 23. Start the lubrication temperature control mechanism 4. The temperature of the lubrication medium is controlled at a range slightly below room temperature through the heat exchanger 43 and the cooler 41. The temperature sensor 42 monitors and provides feedback adjustment in real time. Start the cold rolling mill body 1. The linear motor of the feeding section 11 pushes the billet into the cold rolling section 12. The adjustable lubrication mechanism 3 is driven by the lubrication regulator 32. The spray assembly 33 rotates to a suitable angle to precisely spray and cool the billet and rolls. The lubricated medium is collected by the recovery plate 521 of the cleaning and recovery system 5, filtered by the separation assembly 52, and then drawn back to the lubrication storage tank 21 by the suction assembly 53, realizing the recycling of the lubricating medium. The specific flow path of the lubricating medium is: lubrication storage tank 21 → mixer → pump → lubrication channel 31 → spraying by the adjustable lubrication mechanism 3 → filtration by the cleaning and recovery system 5 → suction assembly 53 → lubrication storage tank 21. The entire process ensures that the flow rate of the lubricating medium is controllable, the coverage is comprehensive, and the temperature is accurate through the coordinated work of various mechanisms, while realizing cleaning, recovery and recycling, and improving the operating efficiency and stability of the equipment.

[0060] The adjustable lubrication mechanism 3, with its lubrication regulator 32 and adjustable spray assembly 33, enables precise adjustment of the lubricating medium flow rate and spray angle, solving the problem of limited coverage in traditional gooseneck tubes and ensuring uniform lubrication and cooling of all parts of the billet and rolls. The lubrication temperature control mechanism 4, through precise temperature control, achieves cooling and lubrication effects while avoiding billet shrinkage or energy waste caused by excessively low temperatures. The cleaning and recycling system 5, through its filtration and suction assembly 53, enables the recycling of the lubricating medium, reducing resource waste and environmental pollution. The coordinated operation of these mechanisms forms a closed-loop system, improving equipment operating efficiency and stability, reducing energy consumption and roll wear, and extending equipment service life, resulting in significant economic and environmental benefits.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seamless steel tube cold rolling mill based on automatic lubrication for cooling the seamless steel tube billets (6) and the rolls during the cold rolling process, characterized in that, The seamless steel pipe cold rolling machine comprises: a cold rolling machine body (1) comprising a feeding section (11), a cold rolling section (12) and a discharging section (13) connected in sequence; a mounting shell (15) mounted on the cold rolling section (12) in a detachable manner; an adjustable lubricating mechanism (3) comprising a lubricating channel (31), a lubricating regulator (32) and a plurality of adjusting spray assemblies (33), wherein the lubricating channel (31) is detachably mounted on the cold rolling machine body (1), the lubricating regulator (32) is arranged on the mounting shell (15) and communicates with the lubricating channel (31), and the adjusting spray assemblies (33) are arranged on the lubricating regulator (32) in a uniform manner. The cold rolling section (12) is slidably provided with a cold rolling head (14), the mounting shell (15) is connected with the cold rolling head (14), and the lubricating channel (31) and the lubricating regulator (32) are in sealed sliding fit. The lubricating channel (31) is connected with the cold rolling machine body (1) through a mounting seat (311), the lubricating channel (31) is provided with an inlet (315) and an outlet (313), the outlet (313) is slidably provided with a sliding plate (314), and the sliding plate (314) is connected with the lubricating regulator (32) through a connector (312). The lubricating channel is in a pipeline structure, and the mounting seat is connected with the cold rolling machine body through a bolt rod. The outlet (313) is provided with a sliding groove on the side close to the lubricating regulator (32), the sliding plate (314) is assembled on the sliding groove and abuts against the outlet (313), the sliding groove has two ends, namely, an A point and a B point, the sliding plate (314) can be switched between the A point and the B point, and the connector (312) on the sliding plate (314) is located at the A point or the B point, so that the sliding plate (314) can shield the outlet (313).

2. A seamless tube cold rolling mill based on automatic lubrication as claimed in claim 1, wherein, The lubricating regulator (32) comprises a fixed ring seat (321) detachably connected with the mounting shell (15), the fixed ring seat (321) is provided with a closed ring groove (323), and the closed ring groove (323) is rotatably assembled with a rotating ring seat (322), so as to form an annular cavity between the closed ring groove (323) and the rotating ring seat (322).

3. A seamless tube cold rolling mill based on automatic lubrication as claimed in claim 2, wherein, The lubricating regulator (32) further comprises an adjusting gear set (324) and an adjusting driver (325), the rotating ring seat (322) is provided with the adjusting gear set (324), the adjusting gear set (324) comprises a driven gear sleeved on the rotating ring seat (322) and a driving gear engaged with the driven gear, and the adjusting driver (325) is connected with the driving gear.

4. A seamless tube cold rolling mill based on automatic lubrication as claimed in claim 3 wherein, The adjusting spray assembly (33) comprises an adjusting rotating seat (331), an adjusting groove (332), an adjusting spray head (333) and a rotating shaft (334). The adjusting transposition (331) is installed on the rotating ring seat (322), an adjusting groove (332) is arranged on the adjusting transposition (331), the adjusting nozzle (333) is movably installed on the adjusting groove (332) through a rotating shaft (334), and a control gear set (335) is arranged on the rotating shaft (334) and used for adjusting the angle of the adjusting nozzle (333).

5. A seamless tube cold rolling mill based on automatic lubrication as claimed in claim 4 wherein, The axial direction of the rotating shaft (334) is perpendicular to the axial direction of the rotating ring seat (322) in the same plane.

6. A seamless tube cold rolling mill based on automatic lubrication as claimed in claim 5 wherein, The seamless steel pipe cold rolling machine further comprises a lubricating circulation mechanism (2). The lubricating circulation mechanism (2) comprises a lubricating storage tank (21), a lubricating mixer (22) and a lubricating control pump (23), the lubricating storage tank (21) is connected with the lubricating control pump (23), the lubricating control pump (23) is connected with the lubricating channel (31), and the lubricating mixer (22) is installed on the lubricating storage tank (21).

7. A seamless tube cold rolling mill based on automatic lubrication as claimed in claim 6 wherein, The seamless steel pipe cold rolling machine further comprises a lubricating temperature control mechanism (4). The lubricating temperature control mechanism (4) comprises a refrigerator (41), a temperature sensor (42) and a heat exchanger (43), the heat exchanger (43) is connected with the lubricating control pump (23) and the inlet (315) of the lubricating channel (31) respectively, the temperature sensor (42) is installed on the heat exchanger (43), and the refrigerator (41) is installed on the heat exchanger (43).

8. A seamless tube cold rolling mill based on automatic lubrication as claimed in claim 7, wherein, The seamless steel pipe cold rolling machine further comprises a cleaning and recycling system (5) which is installed on the lubricating regulator (32) and connected with the lubricating storage tank (21) and used for recycling lubricating oil.

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