A grease lubrication system for rolling mill rolls during magnesium alloy rolling

Abstract

This invention relates to the field of grease lubrication technology for rolling mill rolls, and in particular to a grease lubrication system for magnesium alloy rolling mill rolls. The system includes a rolling base and mounting pads. Mounting pads are fixedly connected to both sides of the upper end of the rolling base. A side plate is fixedly connected to the upper end of each mounting pad. An arc-shaped groove is machined on the inner wall of each side plate. An upper pressure roller is rotatably connected to the upper inner wall of the side plate. A spraying assembly is provided on the outer wall of the upper pressure roller. A rotating assembly is installed on the outer wall of the side plate. Through the cooperation between the diversion pump body, the lubricating oil nozzle, and the crossbar, the output shaft of the multi-stage electric push rod can continuously extend and retract, thereby driving the crossbar to reciprocate. This allows the crossbar to drive the lubricating oil nozzle to continuously reciprocate, spraying the lubricating grease more evenly onto the outer wall of the pressure roller. This effectively avoids the problem of inconsistent lubricating oil spray density and poor uniformity on the surface of the pressure roller caused by the fixed lubricating oil nozzle design commonly used in existing technologies, which affects the final rolling effect.

Description

Technical Field

[0001] This invention relates to the field of grease lubrication technology for rolling mill rolls, specifically a grease lubrication system for rolling mill rolls during magnesium alloy rolling. Background Technology

[0002] The grease lubrication system for magnesium alloy rolling is a key auxiliary system that ensures the stability of the rolling process of magnesium alloy plates / profiles, improves product quality, and extends roll life. Its core function is to precisely supply special grease to the contact area between the roll and the magnesium alloy billet, achieving lubrication, cooling, and anti-sticking effects. It forms an effective lubricating film on the contact surface, which can reduce rolling friction and roll wear, remove rolling heat to prevent roll deformation and magnesium alloy oxidation, and prevent the billet from sticking to the roll and causing scratches. It is suitable for the rolling characteristics of magnesium alloys, which have poor plasticity and are prone to sticking to the roll, ensuring the stability of the rolling process and improving product quality.

[0003] However, although existing technologies can achieve grease lubrication of rolls during magnesium alloy rolling, the use of fixed lubricating oil nozzles usually results in inconsistent lubricating oil spray density on the surface of the rolls, leading to poor uniformity and affecting the final rolling effect. Furthermore, the need to design two sets of lubrication spraying equipment due to the position of the upper and lower rolls results in high pump costs, complex structures, and susceptibility to failure. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of inconsistent lubricant spray density and poor uniformity on the surface of the pressure rollers due to the fixed lubricant spray head design in the device, which affects the final rolling effect, and the need to design two sets of lubrication spraying equipment due to the position of the upper and lower pressure rollers, which leads to high pump costs, complex structure and easy failure. Therefore, a grease lubrication system for rolling mill rolls during magnesium alloy rolling is proposed.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A grease lubrication system for rolling mill rolls in magnesium alloy rolling is designed, comprising a rolling base and mounting pads. Mounting pads are fixedly connected to both sides of the upper end of the rolling base. Side plates are fixedly connected to the upper end of the mounting pads. The inner wall of the side plates is machined with arc-shaped grooves. An upper pressure roller is rotatably connected to the upper inner wall of the side plates. Hydraulic cylinders are fixedly connected to both sides of the lower end of the side plates. The bearing seat at the end of the output shaft of the hydraulic cylinder is rotatably connected to a lower pressure roller. A spraying assembly is provided on the outer wall of the upper pressure roller. A rotating assembly is installed on the outer wall of the side plates.

[0007] This feature: Through the design of the hydraulic cylinder and the lower pressure roller, the specific output thickness can be controlled by the hydraulic cylinder to adjust the height of the lower pressure roller, thereby adjusting the distance between the upper and lower pressure rollers to output magnesium alloy plates of different thicknesses.

[0008] Preferably, the spraying assembly includes a crossbar, the outer walls of the crossbar are slidably connected to arc-shaped grooves on both sides, lubricating oil nozzles are fixedly connected to the outer walls of the crossbar at equal intervals, one side of the outer wall of each lubricating oil nozzle is connected to a diverter pump body through a retractable hose, the outer wall of the end of the crossbar is machined with a sliding groove, and one side of the end of the crossbar is fixedly connected to an arc-shaped end plate, the other side of the arc-shaped end plate is fixedly connected to the output shaft of a multi-stage electric push rod.

[0009] This setup: Through the design of the lubricating oil nozzle, retractable hose, and distributor pump, the distributor pump is controlled to draw lubricating oil from the external lubricating oil tank and deliver it to the lubricating oil nozzle through the retractable hose. The distributor pump can evenly deliver the lubricating oil to the three retractable hoses, and the lubricating oil nozzle finally sprays the grease to achieve the lubrication effect.

[0010] Preferably, the outer wall of the diversion pump body is fixedly connected to a side plate on one side by a bracket, and the other side of the diversion pump body is connected to an external lubricating oil tank through an oil supply pipe.

[0011] This feature, featuring a design of a multi-stage electric push rod and a spray nozzle, allows the output shaft of the multi-stage electric push rod to continuously extend and retract, thereby driving the crossbar to reciprocate. This, in turn, allows the crossbar to drive the lubricating oil spray nozzle to reciprocate continuously, spraying the lubricating grease more evenly onto the outer wall of the pressure roller.

[0012] Preferably, the outer walls of the crossbar and the retractable hose are fitted with multiple elastic rope sleeves.

[0013] Preferably, the rotating assembly includes a servo motor bracket, and multiple servo motor brackets are respectively fixed to the rear side of the outer wall of the side plate. A servo motor is fixedly connected to the outer wall of each servo motor bracket. The output shaft end of the servo motor is fixedly connected to one side of the rotating bracket. The inner wall of the other side of the rotating bracket is slidably connected to a slide groove. The outer wall of the rotating bracket is fixedly connected to a multi-stage electric push rod through an electric push rod bracket.

[0014] This setup: Through the design of the servo motor and rotating bracket, the servo motors on both sides start synchronously. The servo motor drives the rotating bracket to rotate, thereby moving the entire spraying assembly from the upper pressure roller position to the lower pressure roller position to spray lubricating oil onto the lower pressure roller. Furthermore, since the spraying angle of the lubricating oil nozzle is consistent with the angle of the rotating bracket, a good spraying angle is maintained when facing both the upper and lower pressure rollers.

[0015] Preferably, an upper gear is fixedly connected to one end of the upper pressure roller, and a lower gear is fixedly connected to one end of the lower pressure roller, and the upper gear and the lower gear mesh with each other.

[0016] Preferably, a drive shaft is fixed to the other end of the lower pressure roller, and the outer wall of the drive shaft is machined with a flat key for connecting to an external power source.

[0017] This setup, through the design of the drive shaft, upper gear, and lower gear, allows an external power source to drive the drive shaft to rotate, which in turn drives the lower pressure roller to rotate. At the same time, due to the design of the upper and lower gears, the upper and lower pressure rollers rotate synchronously and in opposite directions, which can clamp and extrude magnesium alloy materials for output.

[0018] Preferably, L-shaped plates are fixed to the four corners of the outer wall of the rolling base.

[0019] The grease lubrication system for rolling mill rolls during magnesium alloy rolling proposed in this invention has the following advantages:

[0020] By coordinating the flow divider pump, lubricating oil nozzle, multi-stage electric push rod, and crossbar, the flow divider pump is controlled to draw lubricating oil from the external lubricating oil tank and deliver it to the lubricating oil nozzle through a retractable hose. The lubricating oil nozzle then sprays the grease to achieve a lubricating effect. At the same time, the user can use the multi-stage electric push rod to continuously extend and retract the output shaft, thereby driving the crossbar to reciprocate. This allows the crossbar to continuously reciprocate the lubricating oil nozzle, resulting in a more even spraying of the lubricating grease onto the outer wall of the pressure roller. This effectively avoids the problem of inconsistent lubricating oil spray density and poor uniformity on the surface of the pressure roller, which is often caused by the fixed lubricating oil nozzle design in existing technologies and affects the final rolling effect.

[0021] Through the coordination of servo motors, rotating brackets, lubricating oil nozzles, upper pressure rollers, and lower pressure rollers, the magnesium alloy material is fed intermittently—not continuously for a long time, but with a 10-15 second interval between batches. The user can then control the servo motors on both sides to start synchronously, causing the rotating bracket to rotate and move the entire spraying assembly from the upper pressure roller to the lower pressure roller for lubricating oil spraying. Furthermore, because the spraying angle of the lubricating oil nozzles matches the angle of the rotating bracket, a good spraying angle is maintained when facing both the upper and lower pressure rollers. This effectively avoids the problems of existing technologies where the position of the upper and lower pressure rollers necessitates the design of two sets of lubrication spraying equipment, resulting in higher pump costs, complex structures, and susceptibility to malfunctions. Attached Figure Description

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

[0023] Figure 2 For the present invention Figure 1 A schematic diagram of the structure viewed from below in the image;

[0024] Figure 3 For the present invention Figure 1 A schematic diagram of the structure on the right side of the image;

[0025] Figure 4 For the present invention Figure 1 A schematic diagram of the rear structure in the middle;

[0026] Figure 5 For the present invention Figure 3 Schematic diagram of the structure at the spraying component;

[0027] Figure 6 For the present invention Figure 4 Schematic diagram of the structure at the spraying component;

[0028] Figure 7 For the present invention Figure 3 Schematic diagram of the structure at the rolling base;

[0029] Figure 8 For the present invention Figure 7 A schematic diagram of the structure viewed from below.

[0030] In the diagram: 1. Rolling base, 2. Mounting pad, 3. Spraying assembly, 301. Crossbar, 302. Telescopic hose, 303. Lubricating oil nozzle, 304. Multi-stage electric push rod, 305. Arc-shaped end plate, 306. Electric push rod bracket, 307. Slide groove, 4. Rotating assembly, 401. Rotating bracket, 402. Servo motor bracket, 403. Servo motor, 5. Side plate, 6. L-shaped plate, 7. Oil supply pipe, 8. Diverter pump body, 9. Elastic rope sleeve, 10. Upper pressure roller, 11. Upper gear, 12. Arc-shaped groove, 13. Lower gear, 14. Hydraulic cylinder, 15. Lower pressure roller, 16. Drive shaft, 17. Flat key. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] See attached document Figure 1-8In this embodiment, a grease lubrication system for magnesium alloy rolling rolls includes a rolling base 1 and mounting plates 2. Mounting plates 2 are fixedly connected to both sides of the upper end of the rolling base 1. Side plates 5 are fixedly connected to the upper end of the mounting plates 2. Arc-shaped grooves 12 are machined on the inner wall of the side plates 5. An upper pressure roller 10 is rotatably connected to the upper inner wall of the side plates 5. Hydraulic cylinders 14 are fixedly connected to both sides of the lower end of the side plates 5. The model of the hydraulic cylinders 14 can be determined according to specific application requirements. The hydraulic cylinders 14 provide good self-locking capability. The bearing seat at the end of the output shaft of the hydraulic cylinder 14 is rotatably connected to a lower pressure roller 15. A spraying assembly 3 is provided on the outer wall of the upper pressure roller 10, and a rotating assembly 4 is installed on the outer wall of the side plates 5. An upper gear 11 is fixedly connected to one end of the upper pressure roller 10, and a lower gear 13 is fixedly connected to one end of the lower pressure roller 15. The upper gear 11 and the lower gear 13 mesh with each other, enabling the rotational transmission between the lower pressure roller 15 and the upper pressure roller 10. They rotate synchronously but in opposite directions. A drive shaft 16 is fixedly connected to the other end of the lower pressure roller 15. A flat key 17 is machined on the outer wall of the drive shaft 16 to connect with an external power source. The flat key 17 facilitates the rotational transmission between the drive shaft 16 and the external power source. L-shaped plates 6 are fixedly connected to the four corners of the outer wall of the rolling base 1, allowing the rolling base 1 to be installed on the platform of the corresponding magnesium alloy rolling machine via the L-shaped plates 6.

[0033] See attached document Figure 1-8 In this embodiment, the spraying assembly 3 includes a crossbar 301. The outer walls of both sides of the crossbar 301 are slidably connected to the arc-shaped groove 12. Lubricating oil nozzles 303 are fixedly connected to the outer wall of the crossbar 301 at equal intervals. One side of the outer wall of each lubricating oil nozzle 303 is connected to a diverter pump body 8 through a retractable hose 302. The model of the diverter pump body 8 can be determined according to the specific application. The diverter pump body 8 can evenly deliver lubricating oil to the three retractable hoses 302. The outer wall of the end of the crossbar 301 is machined with a groove 307, and the end of the crossbar 301 is fixedly connected to the groove 12. One side is connected to the arc-shaped end plate 305, and the other side of the arc-shaped end plate 305 is fixedly connected to the output shaft of the multi-stage electric push rod 304. The model of the multi-stage electric push rod 304 can be determined according to the specific application. The outer wall of the diversion pump body 8 is fixedly connected to the side plate 5 on one side through the bracket. The other side of the diversion pump body 8 is connected to the external lubricating oil tank through the oil supply pipe 7. Multiple elastic rope sleeves 9 are sleeved on the outer wall of the crossbar 301 and the retractable hose 302. The elastic rope sleeves 9 are elastic sleeves that can limit the position of the retractable hose 302 on the outer wall of the crossbar 301.

[0034] See attached document Figure 1-8In this embodiment, the rotating component 4 includes a servo motor bracket 402. Multiple servo motor brackets 402 are respectively fixed to the rear side of the outer wall of the side plate 5. Servo motors 403 are fixedly connected to the outer wall of each servo motor bracket 402. The model of the telescopic hose 302 can be determined according to the specific application. The telescopicity of the telescopic hose 302 provides the possibility for the reciprocating movement of the lubricating oil nozzle. The output shaft end of the servo motor 403 is fixedly connected to one side of the rotating bracket 401. The inner wall of the other side of the rotating bracket 401 is slidably connected to the slide groove 307. The design of the slide groove 307 makes the angle of the crossbar 301 change when the rotating bracket 401 rotates, so that the lubricating oil nozzle 303 always faces the rotation center. The outer wall of the rotating bracket 401 is fixedly connected to the multi-stage electric push rod 304 through the electric push rod bracket 306.

[0035] Working principle:

[0036] When the grease lubrication system for the rolling mill is needed for this magnesium alloy rolling, the user can first install the rolling base 1 on the platform of the corresponding magnesium alloy rolling machine through the L-shaped plate 6, align the upper and lower pressure rollers with the outlet of the magnesium alloy material input, and connect it to an external power source through the flat key 17 on the drive shaft 16, so that the external power source can drive the drive shaft 16 to rotate and thus drive the lower pressure roller 15 to rotate. At the same time, due to the design of the upper gear 11 and the lower gear 13, the upper pressure roller 10 and the lower pressure roller 15 rotate synchronously and in opposite directions, which can clamp and squeeze the magnesium alloy material for output. The specific output thickness can be controlled by the hydraulic cylinder 14 to control the specific height of the lower pressure roller 15, thereby adjusting the distance between the upper pressure roller 10 and the lower pressure roller 15 to achieve the output of magnesium alloy plates of different thicknesses.

[0037] In the actual rolling process, lubrication is usually applied to the pressure rollers to prevent wear during extrusion. In this case, the user can control the diversion pump 8 to draw lubricating oil from the external lubricating oil tank and deliver it to the lubricating oil nozzle 303 through the retractable hose 302. The lubricating oil nozzle 302 then sprays the grease to achieve the lubrication effect. At the same time, the user can use the multi-stage electric push rod 304 to continuously extend and retract the output shaft of the multi-stage electric push rod 304, thereby driving the crossbar 301 to reciprocate. This allows the crossbar 301 to drive the lubricating oil nozzle 303 to continuously reciprocate, spraying the lubricating grease more evenly on the outer wall of the pressure roller. In this way, the problem of inconsistent lubricating oil spray density and poor uniformity on the surface of the pressure roller, which is usually caused by the fixed lubricating oil nozzle design in the prior art, can be effectively avoided, which affects the final rolling effect.

[0038] Furthermore, since the magnesium alloy material is fed intermittently—that is, not continuously for a long time, but with a 10-15 second interval between batches—the user can control the servo motors 403 on both sides to start synchronously. The servo motors 403 drive the rotating bracket 401 to rotate, thereby moving the entire spraying assembly 3 from the upper pressure roller 10 position to the lower pressure roller 15 position, spraying lubricating oil onto the lower pressure roller 15. Since the spraying angle of the lubricating oil nozzle 303 is consistent with the angle of the rotating bracket 401, therefore… When facing the upper pressure roller 10 and the lower pressure roller 15, a good spraying angle is maintained. This effectively avoids the problem in the prior art where the position of the upper and lower pressure rollers requires the design of two sets of lubrication spraying equipment, which results in high pump costs, complex structure, and easy failure. The specific spraying process can be completed when the previous magnesium alloy material is about to finish rolling, and during the interval between the completion of the rolling of the magnesium alloy material and the rolling of the next magnesium alloy material, the servo motor 403 is started to drive the overall spraying assembly 3 to change position, and then the pressure roller at another position is lubricated.

[0039] Finally, the control process in this case can be controlled by a PLC controller, which may include structures such as electric push rods, hydraulic cylinders, and servo motors. The control content may include specific data control such as self-locking, linkage, synchronous start and stop, and extension and retraction speed.

[0040] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art will understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A grease lubrication system for rolling mill rolls during magnesium alloy rolling, comprising a rolling base (1) and mounting pads (2), wherein mounting pads (2) are fixedly connected to both sides of the upper end of the rolling base (1), characterized in that: The upper end of the mounting pad (2) is fixedly connected to a side plate (5). The inner wall of the side plate (5) is machined with an arc-shaped groove (12). The upper inner wall of the side plate (5) is rotatably connected to an upper pressure roller (10). Hydraulic cylinders (14) are fixedly connected to both sides of the lower end of the side plate (5). The bearing seat at the end of the output shaft of the hydraulic cylinder (14) is rotatably connected to the lower pressure roller (15). The outer wall of the upper pressure roller (10) is provided with a spraying assembly (3). The outer wall of the side plate (5) is equipped with a rotating assembly (4). The spraying assembly (3) includes a crossbar (301), the outer walls of the two sides of the crossbar (301) are slidably connected to the arc-shaped groove (12), and the outer walls of the crossbar (301) are fixedly connected with lubricating oil nozzles (303) at equal intervals. One side of the outer wall of the lubricating oil nozzles (303) is connected to the diverter pump body (8) through a retractable hose (302). The outer wall of the end of the crossbar (301) is machined with a sliding groove (307), and one side of the end of the crossbar (301) is fixedly connected to an arc-shaped end plate (305). The other side of the arc-shaped end plate (305) is fixedly connected to the output shaft of the multi-stage electric push rod (304). The outer walls of the crossbar (301) and the retractable hose (302) are fitted with multiple elastic rope sleeves (9). The rotating assembly (4) includes a servo motor bracket (402), and multiple servo motor brackets (402) are respectively fixed to the rear side of the outer wall of the side plate (5). A servo motor (403) is fixedly connected to the outer wall of each servo motor bracket (402). The output shaft end of the servo motor (403) is fixedly connected to one side of the rotating bracket (401). The inner wall of the other side of the rotating bracket (401) is slidably connected to the slide groove (307). The outer wall of the rotating bracket (401) is fixedly connected to the multi-stage electric push rod (304) through the electric push rod bracket (306).

2. The grease lubrication system for magnesium alloy rolling mill rolls according to claim 1, characterized in that: The outer wall of the diversion pump body (8) is fixedly connected to a side plate (5) on one side by a bracket, and the other side of the diversion pump body (8) is connected to an external lubricating oil tank through an oil supply pipe (7).

3. The grease lubrication system for magnesium alloy rolling mill rolls according to claim 2, characterized in that: An upper gear (11) is fixedly connected to one end of the upper pressure roller (10), and a lower gear (13) is fixedly connected to one end of the lower pressure roller (15). The upper gear (11) and the lower gear (13) mesh with each other.

4. The grease lubrication system for magnesium alloy rolling mill rolls according to claim 3, characterized in that: The other end of the lower pressure roller (15) is fixed with a drive shaft (16), and the outer wall of the drive shaft (16) is machined with a flat key (17) for connecting to an external power source.

5. The grease lubrication system for rolling mill rolls during magnesium alloy rolling according to claim 4, characterized in that: L-shaped plates (6) are fixed to the four corners of the outer wall of the rolling base (1).

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