Rolling oil regulating assembly and cold rolling device and method of use thereof

Abstract

The present application relates to the technical field of metal rolling equipment, and particularly relates to a rolling oil regulating assembly, a cold rolling equipment and a use method thereof. In view of the problems of the decrease of atomization quality and the stratification of emulsion caused by flow fluctuation in variable-width rolling, the original micro-crack of the edge of the steel strip inducing strip breakage, and the accumulation of oil-containing iron powder at the cleaning scraper and the difficulty in falling off, the present application realizes stepless physical truncation of the spraying width under the premise of maintaining constant spraying pressure by means of the built-in piston type variable-volume cavity cooperating with the in-tube staggered disc structure, and forcibly emulsifies by using fluid shear force; V-shaped groove extrusion rollers are arranged on both sides of the equipment to exert lateral plastic extrusion force on the edge of the steel strip, to physically close the micro-cracks and to pre-set the compressive stress layer; the cleaning unit adopts a rotating magnetic suction cylinder combined with a cam vibrating and beating scraper structure to destroy the adhesion of the oil sludge and cooperate with negative pressure suction. The device effectively solves the problems of lubrication consistency under variable conditions, edge crack propagation and cleaning mechanism self-cleaning.

Description

Technical Field

[0001] This invention relates to the field of metal rolling equipment technology, and in particular to a rolling oil control component and a cold rolling equipment and its usage method. Background Technology

[0002] Cold rolling is an important processing technology in the field of metal processing. It involves applying rolling force to a metal strip at room temperature, causing the strip to undergo plastic deformation. However, in the pursuit of high-precision and high-speed rolling, several unresolved issues remain in existing technologies:

[0003] Existing rolling oil spraying systems often control the spraying range by reducing pump pressure or closing some solenoid valve groups when adapting to steel strips of different widths. However, reducing pump pressure leads to insufficient pressure at the nozzle, preventing the emulsion from being fully atomized and forming droplets instead of oil mist, which seriously affects cooling uniformity. On the other hand, using a complex solenoid valve matrix control not only results in a large number of dead ends (dead oil zones) in the pipeline, but also makes it easy for unstable oil-water emulsions to separate and break down during standing. This can lead to momentary pure water or pure oil phenomena during re-spraying, resulting in lubrication failure or slippage.

[0004] Traditional cold-rolling inlet guide devices only serve a physical limiting function to prevent the steel strip from deviating. However, during previous processes (such as hot rolling and pickling), micro-cracks or serrations inevitably develop at the edges of the steel strip. Under the enormous tensile stress of cold rolling, these open micro-cracks easily become stress concentration points and propagate rapidly, leading to edge cracking or even strip breakage. Simple guidance cannot change the internal stress state and physical defects of the edge material.

[0005] Although magnetic adsorption cleaning rollers are already used in the industry, in cold rolling environments, iron powder mixes with high-viscosity rolling oil to form sludge. This sludge has extremely strong adhesion and surface tension, making it difficult to completely peel off the adsorption roller surface using only a fixed scraper. Instead, the sludge easily accumulates and hardens at the scraper edge, forming an uneven accumulation layer. This not only renders the scraper ineffective, but the accumulated hard particles also act as an abrasive between the scraper and the roller surface, causing secondary scratches on the precision rolls. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing variable-width rolling processes, such as difficulty in maintaining atomization quality and easy demulsification, stress concentration caused by original defects at the edge of the steel strip, and failure of the cleaning mechanism due to oil sludge adhesion. The invention proposes a rolling oil control component, cold rolling equipment, and its usage method.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A rolling oil control assembly includes a U-shaped bracket, within which a spray pipe is fixed. One side of the spray pipe is connected to multiple connecting pipes arranged axially along its axis. One end of each connecting pipe is equipped with an atomizing nozzle. Two piston plates are slidably and sealed within the spray pipe, forming an oil storage chamber between the two piston plates and the inner wall of the spray pipe. Liquid injection pipes are located on both sides of the spray pipe, with the ends of the two liquid injection pipes close to each other fixedly penetrating the corresponding piston plates. The spray pipe is equipped with an adjustment part for adjusting the distance between the two piston plates. By changing the distance between the two piston plates, the length of the oil storage chamber is adjusted, thereby controlling the coverage area of ​​the rolling oil sprayed from the atomizing nozzle.

[0009] In one possible design, the adjusting part includes two screws, a drive shaft, and two synchronous pulleys I. The two synchronous pulleys I are rotatably connected to both sides of the U-shaped bracket. One end of each screw slides through the U-shaped bracket and is fixedly connected to a corresponding piston plate, while the other end is threadedly connected to the synchronous pulley I. The drive shaft is rotatably connected to the top of the injection pipe, and synchronous pulleys II are fixed at both ends. The synchronous pulleys II on the same side are connected to the synchronous pulleys I via a synchronous belt drive. A first motor for driving the drive shaft to rotate is fixed on the U-shaped bracket.

[0010] In one possible design, multiple discs are fixed inside the connecting pipe, each disc having a through hole, and the through holes in adjacent discs are staggered, so that the high-pressure rolling oil is forced to split, collide, and merge when it passes through.

[0011] A cold rolling equipment includes two sets of the aforementioned rolling oil control components, and further includes two mounting bases, a connecting plate fixed between the two mounting bases, a lifting platform slidably disposed in a vertical groove of the mounting base, and a connecting bracket slidably disposed in the vertical groove and located above the lifting platform. Rolls are rotatably connected between the connecting bracket and the two lifting platforms. One of the U-shaped brackets is fixed to the connecting bracket, and the other U-shaped bracket is fixed to the side of the two lifting platforms that are close to each other. The spraying direction of the atomizing nozzles on the two U-shaped brackets is respectively towards the top and bottom of the roll gap inlet of the two rolls.

[0012] In one possible design, the connecting plate is provided with an adjustment unit, which includes a double-rod hydraulic cylinder II fixed to the top of the connecting plate, a top plate fixed to the piston rod of the double-rod hydraulic cylinder II, and guide rods I with their ends respectively connected to the top plate and the connecting bracket. Multiple double-rod hydraulic cylinders I are fixed to the bottom inner wall of the vertical groove, and the top end of the piston rod of the double-rod hydraulic cylinder I is fixedly connected to the bottom of the lifting platform.

[0013] In one possible design, the mounting base has two support plates fixed on one side near the U-shaped bracket. Each of the two support plates has an extension on the side close to each other. The extension includes a U-shaped plate driven by a hydraulic cylinder III and slidably connected to the support plate, and a circular roller rotatably connected to the U-shaped plate in the longitudinal direction. The outer wall of the circular roller has a V-shaped groove.

[0014] In one possible design, two sets of cleaning structures are also included, respectively located on the side of the connecting bracket and the two lifting platforms away from the U-shaped bracket. The cleaning structure includes two fixed arms, a rotating cylinder rotatably connected between the two fixed arms, multiple magnets fixed to the inner wall of the rotating cylinder, a second motor for driving the rotating cylinder to rotate, a negative pressure chamber fixed between the two fixed arms, and a scraper fixed at the air inlet of the negative pressure chamber. The scraper abuts against the outer wall of the rotating cylinder, and the negative pressure chamber is connected to a negative pressure pump.

[0015] In one possible design, a U-shaped mounting bracket is fixed to the side of the negative pressure chamber near the rotating cylinder. A rotating rod is rotatably connected inside the U-shaped mounting bracket. A rubber roller and a cam are fixedly sleeved on the rotating rod. The rubber roller abuts against the outer wall of the rotating cylinder. A fixing ring is fixed to the top of the U-shaped mounting bracket. A top rod slides through the fixing ring. A base plate that abuts against the protrusion of the cam is fixed to the bottom end of the top rod. The top of the top rod is opposite to the bottom of the scraper. A limiting ring located above the fixing ring is sleeved on the outer wall of the top rod. A tension spring is fixed between the limiting ring and the fixing ring.

[0016] In one possible design, a sheet metal plate is fixed inside the scraper, and the top of the top rod abuts against the bottom of the sheet metal plate.

[0017] This application discloses a method of using a cold rolling mill, comprising the following steps:

[0018] S1. Roll gap adjustment: Control the synchronous action of double-rod hydraulic cylinder II and double-rod hydraulic cylinder I to drive the connecting bracket and lifting platform to move relative to each other along the vertical groove, and set the roll gap between the two rolls to the preset rolling thickness value;

[0019] S2, Edge Limit Preset: Start hydraulic cylinder III to push the U-shaped plate and the round rollers to move towards the center line of the steel strip until the V-shaped grooves on the outer walls of the two round rollers abut against the two sides of the steel strip to be rolled.

[0020] S3. Spraying range matching: Start the first motor to drive the drive shaft to rotate, and drive the two screws to rotate synchronously through the synchronous belt transmission assembly. Drive the two piston plates to slide in opposite directions or back to back in the spray pipe to adjust the length of the oil storage chamber so that the effective spray width of the atomizing nozzle matches the width of the steel belt.

[0021] S4. Rolling oil homogenization spraying: High-pressure rolling oil is injected into the oil storage chamber. The oil flows through multiple discs with staggered through holes in the connecting pipe. After being mixed by diversion and impact, it is atomized by the atomizing nozzle and sprayed onto the contact area between the roll and the steel strip.

[0022] S5. Edge extrusion pretreatment: The steel strip is pulled through two round rollers, and the inclined surface of the V-shaped groove is used to apply a lateral extrusion force pointing towards the center of the steel strip to the edge of the steel strip, so that the edge of the steel strip undergoes local plastic deformation.

[0023] S6. Cold rolling forming: Drive two rolls to rotate and roll the steel strip, while repeating step S4 to maintain lubrication and cooling.

[0024] S7. Dynamic removal of iron powder: Start the second motor to drive the rotating drum to rotate, and use magnets to attract iron powder on the surface of the roller; start the negative pressure pump to generate negative pressure in the negative pressure chamber; the rotating drum drives the rubber roller, rotating rod and cam to rotate through friction; when the cam rotates, it periodically pushes the top rod to knock the iron plate in the scraper, which shakes up the iron powder blocked by the scraper and sucks it into the negative pressure chamber for discharge under the action of negative pressure.

[0025] Beneficial effects: In this invention, the effective length of the oil reservoir is changed by the physical displacement of the piston plate in the spray pipe. This method of cutting off rather than reducing pressure and throttling ensures that the fluid pressure in the spray pipe is always maintained in the optimal atomization range, regardless of the change in spray width, thus guaranteeing the consistency of atomized particle size across the entire width. At the same time, in conjunction with the multi-disc staggered through-hole structure in the connecting pipe, the high-speed shearing and impact effect generated when the fluid flows through the staggered holes is used to perform forced secondary dynamic homogenization of the emulsion that may separate in the dead zone or in the pipe, thus completely eliminating the lubrication risks caused by oil-water separation.

[0026] In this invention, a V-groove roller is used as the inlet pretreatment unit. Unlike traditional passive guiding, this structure uses the inclined surface of the V-groove to apply lateral compressive stress pointing towards the center to the edge of the steel strip. This active plastic deformation treatment can physically close the microcracks that were originally open at the edge, just like "kneading dough," and pre-place a compressive stress layer (work hardening layer) in the edge region. This significantly improves the ability of the steel strip edge to resist cold rolling tensile stress and blocks the initiation path of edge cracks at the root.

[0027] This invention solves the industry problem of difficult removal of oily iron powder. By using a cam-driven push rod to continuously and frequently strike the sheet metal plate on the back of the scraper, the generated high-frequency vibration effectively breaks down the liquid bridge force and adhesion between the oily sludge and the scraper, causing the accumulated oily sludge to instantly "disintegrate" and suspend, which is then completely extracted by the adjacent negative pressure suction port. This composite cleaning logic of "adsorption-scraping-vibration-suction" ensures that the scraper edge remains clean during continuous operation, eliminating secondary scratches caused by iron powder accumulation and significantly extending the service life of the rolls. Attached Figure Description

[0028] Figure 1 A three-dimensional structural schematic diagram of a rolling oil control component provided by the present invention;

[0029] Figure 2 A three-dimensional exploded view of the injection pipe, connecting pipe, and atomizing nozzle of a rolling oil control component provided by the present invention.

[0030] Figure 3 A three-dimensional cross-sectional view of the connecting pipe of a rolling oil control component provided by the present invention.

[0031] Figure 4 This is a partial three-dimensional cross-sectional view of the injection pipe and piston plate of a rolling oil control component provided by the present invention.

[0032] Figure 5 This is a three-dimensional structural schematic diagram of a cold rolling equipment provided by the present invention;

[0033] Figure 6 A three-dimensional exploded structural diagram of the mounting base, connecting plate, and connecting bracket of a cold rolling equipment provided by the present invention;

[0034] Figure 7 This is a three-dimensional exploded structural diagram of the bearing plate, U-shaped plate and guide rod II of a cold rolling equipment provided by the present invention.

[0035] Figure 8 This is a three-dimensional exploded structural diagram of the connecting bracket, lifting platform and U-shaped bracket of a cold rolling equipment provided by the present invention.

[0036] Figure 9 A three-dimensional structural diagram of the connecting bracket, lifting platform and fixed arm of a cold rolling equipment provided by the present invention;

[0037] Figure 10 A three-dimensional cross-sectional view of the rotating cylinder and negative pressure chamber of a cold rolling equipment provided by the present invention;

[0038] Figure 11 A cross-sectional view of the rotating drum and scraper of a cold rolling equipment provided by the present invention;

[0039] Figure 12 This is a partial three-dimensional cross-sectional structural diagram of the inclined plate, scraper, and sheet metal of a cold rolling equipment provided by the present invention.

[0040] Figure 13 This is a three-dimensional exploded structural diagram of a cam, a U-shaped mounting bracket, and a top rod of a cold rolling equipment provided by the present invention.

[0041] In the diagram: 1. U-shaped bracket; 2. Injection pipe; 3. Piston plate; 4. Screw; 5. Injection pipe; 6. Synchronous pulley I; 7. Drive shaft; 8. Synchronous pulley II; 9. Connecting pipe; 10. Disc; 11. Atomizing nozzle; 12. Mounting base; 13. Vertical groove; 14. Connecting bracket; 15. Lifting platform; 16. Roller; 17. Double-rod hydraulic cylinder I; 18. Connecting plate; 19. Double-rod hydraulic cylinder II; 20. Top plate; 21. Guide rod I; 22. Bearing plate 23. Guide rod II; 24. U-shaped plate; 25. Hydraulic cylinder III; 26. Circular roller; 27. V-groove; 28. Fixed arm; 29. ​​Rotating cylinder; 30. Magnet; 31. Negative pressure chamber; 32. Air inlet; 33. Inclined plate; 34. Connecting hose; 35. Limiting ring; 36. Scraper; 37. Sheet metal plate; 38. U-shaped mounting bracket; 39. Rotating rod; 40. Rubber roller; 41. Cam; 42. Fixed ring; 43. Top rod; 44. Base plate; 45. Tension spring. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0043] In one embodiment: Refer to Figure 1 , Figure 2 and Figure 4A rolling oil control component, relating to the field of metal rolling equipment technology, mainly includes a U-shaped support 1. The U-shaped support 1 is integrally cast or welded from high-strength structural steel, forming a stable mounting cavity inside. An injection pipe 2 is bolted to the inner wall of the U-shaped support 1. The injection pipe 2 is a hollow cylindrical tube, its axis parallel to the width direction of the subsequently rolled strip. On the side wall of the injection pipe 2 facing the rolling direction, multiple connecting pipes 9 are equally spaced and welded along its axial direction. The axes of these connecting pipes 9 are all perpendicular to the axis of the injection pipe 2. An atomizing nozzle 11 is threadedly fixed to the end of each connecting pipe 9 away from the injection pipe 2. The injection direction of all atomizing nozzles 11 is consistent. After the rolling oil is atomized, it is evenly sprayed onto the target area. Two piston plates 3 are installed in the inner cavity of the injection pipe 2. The outer edges of the two piston plates 3 and the inner wall of the injection pipe 2 are dynamically sealed by a sealing ring. The two piston plates 3 can slide along their axial direction in the injection pipe 2. The inner wall of the injection pipe 2 and the two piston plates 3 together form a sealed oil storage chamber. On the pipe walls on both sides of the injection pipe 2, an injection pipe 5 is passed through and fixed. One end of the two injection pipes 5 extends to the outside of the oil storage chamber and is connected to the external high-pressure rolling oil supply system through a hose. The other end of the two injection pipes 5 is passed through and welded to the corresponding piston plates 3, so that the high-pressure rolling oil can be directly injected into the oil storage chamber dynamically defined by the two piston plates 3 through the injection pipes 5.

[0044] Furthermore, referring to Figure 1 , Figure 2 and Figure 4The rolling oil control assembly includes an adjustment section for precisely adjusting the distance between the two piston plates 3 within the injection pipe 2. The adjustment section comprises two screws 4 and a drive shaft 7. The two screws 4 are coaxially arranged inside both ends of the injection pipe 2. One end of each screw 4 extends into the injection pipe 2, and the other end passes through a guide hole on the side wall of the U-shaped bracket 1 and extends to the outside of the U-shaped bracket 1. Each screw 4 is fixedly connected to the corresponding piston plate 3 via a threaded hole. On the outer sides of the U-shaped bracket 1, a synchronous pulley I6 is installed on each side. The synchronous pulley I6 is supported on the side wall of the U-shaped bracket 1 by rolling bearings. The center of the synchronous pulley I6 has an internal threaded hole, which engages with the section of the screw 4 extending to the outside of the U-shaped bracket 1 via threads. Therefore, when the synchronous pulley I6 is driven to rotate, the drive screw 4 will move axially through the action of the threaded pair, thereby driving the piston plate 3 fixed thereto to move synchronously. The U-shaped bracket 1 is provided with a sealed dust cover. The screw 4, synchronous pulley I6, synchronous pulley II8 and synchronous belt are all housed in the sealed dust cover. The sealing dust cover and the screw 4 are provided with a lip seal to prevent iron powder and oil mist from entering the transmission area. Each piston plate 3 is symmetrically provided with two guide rods (not shown) on the side away from the oil storage chamber. The guide rods are arranged parallel to the screw 4. One end of the guide rod is fixedly connected to the piston plate 3, and the other end slides through the guide hole on the U-shaped bracket 1. Through the cooperation of the guide rod and the screw 4, the piston plate 3 is ensured to slide smoothly along the axial direction of the injection pipe 2, avoiding bending and deformation of the screw 4. The drive shaft 7 is mounted on top of the injection pipe 2 via two bearing seats. A synchronous pulley II8 is fixedly mounted at each end of the drive shaft 7. The synchronous pulley II8 and synchronous pulley I6 on the same side are connected by a synchronous belt. A first motor is mounted on one side of the U-shaped bracket 1. The output shaft of the first motor is fixedly connected to one end of the drive shaft 7 via a coupling.

[0045] Specifically, when the first motor starts, it drives the drive shaft 7 and the synchronous pulleys II8 at both ends to rotate synchronously. Then, through synchronous belt transmission, it drives the two synchronous pulleys I6 to rotate at the same speed and in the same direction. Since the two screws 4 mesh with the internal threads of the synchronous pulleys I6, and the thread direction is usually set to opposite, the same-direction rotation of the two synchronous pulleys I6 will drive the two screws 4 to move axially towards or away from each other, thereby precisely controlling the two piston plates 3 to move closer or further away from each other, realizing the dynamic adjustment of the effective length and volume of the oil storage chamber. High-pressure rolling oil is continuously injected into the oil storage chamber through the injection pipe 5. When the distance between the piston plates 3 decreases, the number of multiple connecting pipes 9 connected to the oil storage chamber is controlled, thereby controlling the number of multiple atomizing nozzles 11 spraying, thereby controlling the spraying range. This allows for real-time matching of strips of different widths, realizing the adaptive adaptation of the rolling oil spraying range and the strip width.

[0046] Furthermore, referring to Figure 2 and Figure 3 Inside each connecting pipe 9, multiple discs 10 are fixedly installed along the axial direction. The outer edge of the disc 10 is interference-fitted or welded to the inner wall of the connecting pipe 9. Each disc 10 has multiple through holes, which are evenly distributed around the circumference of the disc 10. Crucially, the through holes on two adjacent discs 10 are misaligned, i.e., not on the same axis.

[0047] Specifically, when the high-pressure rolling oil enters the connecting pipe 9 from the oil storage chamber of the injection pipe 2, it is forced to flow sequentially through these discs 10 with staggered through holes. When the oil flow passes through the through hole of the first disc 10, it is divided into multiple jets. When these jets impact the non-through hole area of ​​the second disc 10, they collide, bounce, and mix with the jets from other through holes. This structure, through multiple physical shearing, impact, and turbulence effects, forces the oil phase, water phase, and additives inside the rolling oil to reach a predetermined uniform mixing state before the rolling oil is sprayed out of the atomizing nozzle 11. This effectively prevents the oil-water emulsion separation phenomenon that may occur due to changes in flow rate or pauses during pipeline transportation, ensuring that each drop of oil mist has consistent lubricating and cooling components, thereby ensuring the stability of the rolling process and the consistency of the strip surface quality.

[0048] Reference Figure 5 and Figure 6 A cold rolling equipment, relating to the field of metal rolling equipment technology, includes two sets of the aforementioned rolling oil control components, and further includes two vertically arranged mounting bases 12. The two mounting bases 12 are welded together at the top by a connecting plate 18 to form a rigid integral frame. A vertical groove 13 extending through the height of each mounting base 12 is machined therein. A lifting platform 15 is slidably mounted within each of the two vertical grooves 13. Linear guide rails and slider pairs are provided between the sliding surfaces of the two lifting platforms 15 and the inner walls of the vertical grooves 13. Inside, above the lifting platform 15, a connecting bracket 14 is slidably installed. The two ends of the connecting bracket 14 extend into the vertical grooves 13 of the two mounting bases 12, and cooperate with the vertical grooves 13 through a slider. Between the connecting bracket 14 and the two lifting platforms 15, an upper roller 16 and a lower roller 16 are rotatably installed through rolling bearings. The journals at both ends of the upper roller 16 are installed on the connecting bracket 14, and the journals at both ends of the lower roller 16 are installed on the two lifting platforms 15. A roll gap for rolling steel strip is formed between the upper roller 16 and the lower roller 16.

[0049] A telescopic dustproof curtain (not shown) is provided at the top opening of the vertical groove 13. The two ends of the telescopic dustproof curtain are fixed to the top of the connecting bracket 14 and the upper edge of the vertical groove 13, respectively. The sliding surfaces of the lifting platform 15 and the connecting bracket 14 are provided with wear-resistant sealing gaskets to prevent dust from entering the sliding gap.

[0050] Furthermore, referring to Figure 8 Two sets of rolling oil control components are used to lubricate and cool the upper and lower surfaces of the steel strip, respectively. The two sides of the U-shaped bracket 1 of one control component are fixed to the inner walls of the two sides of the connecting bracket 14 by bolts, so that the spraying direction of its atomizing nozzle 11 is towards the area where the lower roll 16 contacts the steel strip. The two sides of the U-shaped bracket 1 of the other control component are fixed to the sides of the two lifting platforms 15 that are close to each other, so that the spraying direction of its atomizing nozzle 11 is towards the area where the upper roll 16 contacts the steel strip. By independently controlling the distance between the piston plates 3 in the two control components, the rolling oil coverage of the contact area of ​​the upper and lower rolls 16 can be precisely controlled to adapt to different process requirements.

[0051] Furthermore, referring to Figure 5 and Figure 6 The cold rolling mill is equipped with a control unit for adjusting the spacing of the rolls 16. The control unit mainly includes a double-rod hydraulic cylinder II 19. The cylinder body of the double-rod hydraulic cylinder II 19 is bolted to the top center of the connecting plate 18. The top ends of the two piston rods of the double-rod hydraulic cylinder II 19 are fixedly connected to the bottom of a top plate 20 via flanges. Two guide rods I 21 are symmetrically fixed at the bottom of the top plate 20. The two guide rods I 21 slide vertically downwards, passing through the corresponding linear bearings on the connecting plate 18, and their bottom ends are fixedly connected to the top of the connecting bracket 14. When the piston rods of the double-rod hydraulic cylinder II 19 extend or retract, they will drive the entire connecting bracket 14 and the upper rolls 16 mounted on it to rise and fall together via the top plate 20 and the guide rods I 21. Multiple double-rod hydraulic cylinders I 17 are fixedly installed on the bottom inner wall of each vertical groove 13. The top ends of the piston rods of these double-rod hydraulic cylinders I 17 are fixedly connected to the bottom of the corresponding lifting platform 15. By controlling the synchronous movement of multiple double-bar hydraulic cylinders I 17, the lifting platform 15 and the lower roll 16 mounted on it can be driven to move up and down. By coordinating the movement of double-bar hydraulic cylinder II 19 and multiple double-bar hydraulic cylinders I 17, the roll gap between the upper roll 16 and the lower roll 16 can be precisely set, thereby controlling the rolling thickness of the steel strip. For example, when it is necessary to increase the reduction, double-bar hydraulic cylinder II 19 can drive the upper roll 16 to move down, while double-bar hydraulic cylinder I 17 can drive the lower roll 16 to move up, achieving rapid and precise adjustment of the roll gap.

[0052] Furthermore, referring to Figure 5 and Figure 7On the side of the mounting base 12 near the rolling oil control assembly, two support plates 22 are fixed by a bracket. The two support plates 22 are located on both sides of the U-shaped bracket 1. Each support plate 22 has an extension for limiting and pre-treating the side of the steel strip before it enters the roll 16. The extension includes two horizontally arranged guide rods II 23. The two guide rods II 23 slide through the support plate 22 and are slidably connected to the support plate 22 through linear bearings. The ends of the two guide rods II 23 near the roll 16 are connected to a U-shaped plate 24. Specifically, the ends of the guide rods II 23 slide with the groove on the back of the U-shaped plate 24 through a slide rail, allowing the U-shaped plate 24 to slide... There is a slight floating direction perpendicular to the axis of guide rod II 23. A roller 26 is longitudinally mounted on the inner side of the U-shaped plate 24 via a bearing. The axis of roller 26 is perpendicular to the axis of roll 16. A V-groove 27 is machined in the middle of the roller body of roller 26. A hydraulic cylinder III 25 is fixedly mounted on the side of the bearing plate 22 away from the U-shaped plate 24 via a base. Hydraulic cylinder III 25 is equipped with a pressure sensor (not shown), which is electrically connected to the PLC controller. The PLC pre-stores extrusion pressure thresholds corresponding to different steel strip materials and thicknesses. The pressure sensor detects the output pressure of hydraulic cylinder III 25 in real time and adjusts the oil supply pressure of hydraulic cylinder III 25 accordingly, causing the V-groove 27 to... The lateral extrusion pressure on the edges of the steel strip is precisely matched to a preset threshold to ensure that while closing micro-cracks and forming a work-hardened layer, excessive deformation of the steel strip edges is avoided. The piston rod of hydraulic cylinder III 25 horizontally passes through the through hole on the bearing plate 22, and its end is also connected to the side of the U-shaped plate 24 through a slide rail. By controlling the extension and retraction of the piston rod of hydraulic cylinder III 25, the U-shaped plate 24 and the rollers 26 on it can be driven to move or retract towards the steel strip. Before rolling steel strips of different widths, the two hydraulic cylinders III 25 push the two rollers 26 to move towards each other, so that the two sides of the steel strip are respectively embedded in the V-grooves 27 of the two rollers 26. During this process, the inclined surface of the V-grooves 27 not only applies pressure to the edges of the steel strip but also... The edge is guided in the thickness direction, and more importantly, a lateral extrusion force is applied to the edge pointing towards the center of the strip. This specific force field forces the material in the edge area of ​​the steel strip to undergo slight local plastic flow, thereby "kneading" and closing any micro-cracks or loose structures that may exist before rolling under mechanical force. At the same time, this process forms a slight work-hardened layer around the edge. The edge of the steel strip that has undergone this pretreatment has a significantly improved resistance to cracking when subjected to huge rolling forces in the future, which helps to reduce the generation of edge crack defects. The round roll 26 can adaptively fine-tune its height position through the contact between the V-groove 27 and the edge of the steel strip to ensure that the steel strip is always in the center of the V-groove 27.

[0053] Furthermore, referring to Figures 4-10The cold rolling equipment also includes two sets of cleaning structures, which are respectively set on the side of the connecting bracket 14 and the two lifting platforms 15 away from the U-shaped bracket 1. They are used to continuously remove iron powder adhering to the surface of the upper and lower rolls 16 during operation. Each set of cleaning structures mainly includes two fixed arms 28, which are fixed to the side of the connecting bracket 14 or the lifting platform 15 by bolts. Between the two fixed arms 28, a rotating cylinder 29 is rotatably installed through a bearing. The axis of the rotating cylinder 29 is parallel to the axis of the roll 16 and maintains a small gap with the surface of the roll 16. The rotating cylinder 29 is made of non-magnetic metal material such as aluminum alloy or stainless steel. Multiple strip magnets 30 are evenly embedded and fixed in the inner wall of the rotating cylinder 29 along the circumference. A second motor is installed on the outside of one of the fixed arms 28. The output shaft of the second motor is fixedly connected to one end of the rotating shaft of the rotating cylinder 29 through a coupling.

[0054] Specifically, when the second motor starts, it drives the rotating drum 29 to rotate at a certain speed. The magnetic field generated by the magnet 30 on the inner wall of the rotating drum 29 penetrates the drum wall and forms an alternating strong magnetic region on the outer surface of the rotating drum 29. When the roller 16 rotates, the iron powder carried on its surface passes near the rotating drum 29 and is attracted by the magnetic field and transferred to the outer surface of the rotating drum 29. As the rotating drum 29 continues to rotate, the area where the iron powder is attracted gradually moves away from the roller 16.

[0055] Furthermore, referring to Figure 9 and Figure 10 Between the two fixed arms 28, a negative pressure chamber 31 is also fixedly installed. The negative pressure chamber 31 is located on the side of the rotating cylinder 29 away from the roll 16. The negative pressure chamber 31 is a long strip-shaped cavity with a rectangular cross-section, and its length direction is parallel to the axis of the rotating cylinder 29. A narrow air inlet 32 ​​is opened on the side of the negative pressure chamber 31 facing the rotating cylinder 29. An inclined plate 33 is welded and fixed to the top inner wall and the bottom inner wall of the air inlet 32. The two inclined plates 33 are inclined towards each other, forming a gradually narrowing airflow channel, which helps to form a stable negative pressure flow field at the air inlet 32. A connecting hose 34 is connected to the outer wall of the pressure chamber 31. The connecting hose 34 is connected to the inlet of an external industrial negative pressure pump. When the negative pressure pump is started, a continuous suction force is generated at the air inlet 32. A scraper 36 is fixedly installed on the top edge of the inclined plate 33 located below by screws. The scraper 36 is made of wear-resistant non-metallic materials such as polyurethane or engineering plastics. Its cutting edge maintains slight contact with the outer surface of the rotating cylinder 29. As the rotating cylinder 29 rotates, the scraper 36 scrapes off the iron powder that is magnetically attracted on its outer surface. The scraped iron powder accumulates above the scraper 36.

[0056] This cold rolling equipment also includes a PLC controller (not shown). The PLC controller is electrically connected to the first motor, the second motor, the double-rod hydraulic cylinder I 17, the double-rod hydraulic cylinder II 19, the hydraulic cylinder III 25, and the negative pressure pump. The PLC controller has pre-stored mapping tables for strip thickness-roll spacing, strip width-piston plate spacing, and strip width-round roll spacing. By receiving strip specification detection signals such as width sensor and thickness sensor signals (not shown), it automatically controls the coordinated action of each actuator: when adjusting the roll spacing, it synchronously drives the piston rods of double-rod hydraulic cylinder I 17 and double-rod hydraulic cylinder II 19 to extend and retract; when adjusting the rolling oil spray range, it drives the first motor to move the piston plate 3; when adjusting the round roll spacing, it drives the hydraulic cylinder III 25 to push the U-shaped plate 24 to move, ensuring that the actions of each component are precisely matched to the rolling requirements.

[0057] In another embodiment: Refer to Figures 11-13To further improve the iron powder removal efficiency, multiple U-shaped mounting brackets 38 are bolted to the side wall of the negative pressure chamber 31 near the rotating cylinder 29. The openings of the U-shaped mounting brackets 38 face the rotating cylinder 29. Inside each U-shaped mounting bracket 38, a rotating rod 39 is rotatably mounted via bearings. A rubber roller 40 and a cam 41 are fixedly sleeved on the rotating rod 39. The outer diameter of the rubber roller 40 is slightly larger than the outer diameter of the cam 41. The outer edge of the rubber roller 40 is pressed against the outer surface of the rotating cylinder 29. When the rotating cylinder 29 is driven to rotate by the second motor, the rubber roller 40 and the coaxial rotating rod 39 and cam 41 are rotated together by friction. The top of the U-shaped mounting bracket 38 is fixedly connected to the bottom of the inclined plate 33 below to increase its rigidity. At the top of the U-shaped mounting bracket 38, a fixing ring 42 is welded and fixed by a bent plate. A top rod 43 slides smoothly through the fixing ring 42. The bottom end of the top rod 43 is welded... A base plate 44 is fixed, the diameter of which is larger than the diameter of the push rod 43 and the inner diameter of the fixing ring 42. The protruding part of the cam 41 periodically abuts against the bottom of the base plate 44 when rotating. A limiting ring 35 is fixedly sleeved on the outer wall of the push rod 43, and the limiting ring 35 is located above the fixing ring 42. A tension spring 45 is installed between the bottom of the limiting ring 35 and the top of the fixing ring 42. The spring wire diameter of the tension spring 45 ranges from 0.5 mm to 1.2 mm, the free length of the tension spring 45 ranges from 20 mm to 50 mm, and the elastic coefficient of the tension spring 45 ranges from 5 N / mm to 20 N / mm. The two ends of the tension spring 45 are connected to the limiting ring 35 and the fixing ring 42 respectively through spring seats to provide a downward restoring force for the push rod 43. The side wall of the push rod 43 is provided with a guide groove along the axial direction. The U-shaped mounting bracket 38 is provided with a limiting protrusion (not shown) that matches the guide groove to prevent the push rod 43 from shifting when it is reset. After the protrusion of the cam 41 rotates past the base plate 44, under the elastic force of the tension spring 45 and the combined action of the guide groove and the limiting protrusion, the push rod 43 drives the base plate 44 to move down and reset quickly and accurately, ensuring the stability and reliability of the striking action.

[0058] Furthermore, referring to Figure 11 and Figure 12 Inside the scraper 36, a sheet metal plate 37 is embedded and fixed. The top of the sheet metal plate 37 is flush with the top surface of the scraper 36, forming a complete plane, which facilitates the movement of iron powder on it. The top of the push rod 43 contacts the bottom of the sheet metal plate 37.

[0059] Specifically, the rotating drum 29 rotates counterclockwise under the drive of the second motor. When the area of ​​the drum wall that has absorbed iron powder passes the scraper 36, the iron powder is scraped off and temporarily stored on the scraper 36 and the sheet metal plate 37. At the same time, the rotating drum 29 drives the rubber roller 40 to rotate through friction, which in turn drives the rotating rod 39 and the cam 41 to rotate counterclockwise synchronously. When the protrusion of the cam 41 rotates to contact the bottom plate 44, it pushes the bottom plate 44 and the push rod 43 to move upward against the tension of the tension spring 45. The top of the push rod 43 quickly strikes the bottom of the sheet metal plate 37. Because the sheet metal plate 37 is elastic, the strike causes it to vibrate at a high frequency and a small amplitude. This vibration is transmitted to... The iron powder is temporarily stored above, causing it to be shaken up and dispersed. At the same time, the negative pressure pump continues to work, forming a stable negative pressure airflow at the air inlet 32. The iron powder that is shaken up and suspended is instantly captured by the negative pressure airflow and sucked into the negative pressure chamber 31 through the air inlet 32. Finally, it is extracted from the system through the connecting hose 34. When the protrusion of the cam 41 rotates through a certain angle, it disengages from the base plate 44. Under the reset pull of the tension spring 45, the push rod 43 drives the base plate 44 to move down and reset quickly, waiting for the next tap. This cycle is repeated, achieving immediate and efficient removal of scraped iron powder and avoiding secondary accumulation or dispersion of iron powder at the scraper 36.

[0060] Reference Figure 4 , Figure 10 and Figure 11 The rotating cylinder 29 can be opened through the end cap (not shown in the figure) to allow for regular cleaning or replacement of the magnet 30 on its inner wall. The scraper 36 is designed to be detachable for easy replacement after wear. The sealing ring on the piston plate 3 also needs to be checked and replaced regularly according to the usage to ensure the sealing of the oil storage chamber.

[0061] The maintenance requirements for this cold rolling equipment are as follows:

[0062] 1. Apply high-temperature wear-resistant grease to the sliding surfaces of screw 4, guide rod, and vertical groove 13 every 100 hours of operation;

[0063] 2. Every 200 hours of operation, clean the dust inside the sealed dust cover and telescopic dust curtain, and check the wear of the lip seal and wear-resistant gasket. Replace them promptly if they show signs of aging or damage.

[0064] 3. Every 500 hours of operation, check the tension of the synchronous belt and the adsorption performance of the magnet 30, and clean and unclog the atomizing nozzle 11 to avoid clogging and affecting the spraying effect;

[0065] 4. The above maintenance cycle is only an example and can be flexibly adjusted according to the actual rolling intensity and environmental dust concentration.

[0066] A method for producing cold rolling equipment includes the following steps:

[0067] S1. According to the thickness requirement of the steel strip to be rolled, the distance between the two rolls 16 is adjusted by the control unit. The double-rod hydraulic cylinder II 19 and double-rod hydraulic cylinder I 17 are started. The piston rod of the double-rod hydraulic cylinder II 19 extends and retracts, causing the top plate 20 to move up and down. The top plate 20 drives the connecting bracket 14 to slide up and down along the vertical groove 13 through the guide rod I 21. The piston rod of the double-rod hydraulic cylinder I 17 extends and retracts, causing the lifting platform 15 to slide up and down along the vertical groove 13. By the synchronous movement of the connecting bracket 14 and the lifting platform 15, the distance between the two rolls 16 is adjusted to meet the thickness requirement of the steel strip to be rolled. After the adjustment is completed, the double-rod hydraulic cylinder II 19 and double-rod hydraulic cylinder I 17 are closed to fix the position of the rolls 16.

[0068] S2. According to the width of the steel strip to be rolled, adjust the distance between the two round rollers 26 through the extension part, start the hydraulic cylinder III 25, the piston rod of the hydraulic cylinder III 25 extends and retracts to push the U-shaped plate 24 to move along the guide rod II 23 towards the steel strip, the U-shaped plate 24 drives the round rollers 26 to move until the V-grooves 27 of the two round rollers 26 can match the two sides of the steel strip. Since the round rollers 26 can make a fine adjustment of height when they abut against the steel strip through the V-grooves 27, the steel strip is located in the center of the V-grooves 27, ensuring accurate positioning of the steel strip. After the adjustment is completed, close the hydraulic cylinder III 25 to fix the position of the round rollers 26.

[0069] S3. According to the width of the steel strip to be rolled, adjust the spray range of the rolling oil control component through the adjustment unit, start the first motor, the output shaft of the first motor drives the drive shaft 7 to rotate, the synchronous pulleys II8 at both ends of the drive shaft 7 rotate together with the drive shaft 7, the synchronous pulleys II8 drive the synchronous pulleys I6 on the same side to rotate through the synchronous belt, since the synchronous pulleys I6 are threadedly connected to the screw 4, the rotation of the synchronous pulleys I6 drives the screw 4 to move axially, the screw 4 drives the piston plate 3 to slide in the spray pipe 2, thereby adjusting the distance between the two piston plates 3, and thus adjusting the volume of the oil storage chamber and the spray range of the rolling oil, so that the spray range matches the width of the steel strip. After the adjustment is completed, turn off the first motor and fix the position of the piston plate 3.

[0070] S4. Open the external rolling oil source and the control valve on the injection pipe 5. High-pressure rolling oil is injected into the oil storage chamber formed by the injection pipe 2 and the two piston plates 3 through the injection pipe 5. The high-pressure rolling oil in the oil storage chamber flows to the atomizing nozzle 11 through multiple connecting pipes 9. When flowing through multiple discs 10 in the connecting pipes 9, the fluid path is forced to change drastically multiple times due to the misalignment of the through holes on adjacent discs 10. The high-pressure rolling oil undergoes intense turbulent shearing, wall impact, and confluence within a very short distance. This physical structure is equivalent to a pipeline static mixer. Even if the emulsion undergoes microscopic stratification during shutdown, the oil phase particles are broken up again and uniformly dispersed in the aqueous phase after being forcibly sheared by this structure. This ensures that the homogeneity (HSI) of the emulsion reaches the optimal state at the moment of spraying, avoiding the rupture of the local lubricating film on the rolls due to poor emulsion stability.

[0071] S5. Before entering the space between the two rolls 16, the steel strip to be rolled first passes through the V-groove 27 of the two round rolls 26. As the two round rolls 26 abut and limit the sides of the steel strip, when the edge of the steel strip passes through the V-groove 27, it is not only restricted in the thickness direction, but more importantly, it is subjected to lateral extrusion force pointing towards the center of the strip. This lateral extrusion force exceeds the yield limit of the material, forcing the metal material in the loose or micro-cracked areas at the edge to undergo plastic flow and filling, physically "welding" the originally open crack tips. At the same time, this plastic deformation introduces residual compressive stress at the edge of the steel strip. This pre-set compressive stress layer can offset some of the transverse tensile stress generated in the subsequent cold rolling process, thereby greatly improving the crack resistance of the edge.

[0072] S6. The pre-treated steel strip enters between two rolls 16. The drive mechanism of the cold rolling equipment is started, causing the two rolls 16 to rotate. The two rolls 16 apply rolling force to the steel strip, causing plastic deformation and thus rolling a product of the required thickness. During the rolling process, the rolling oil control component continuously sprays uniform rolling oil onto the contact area between the rolls 16 and the steel strip, which serves to lubricate, cool, and clean the strip, reducing friction between the rolls 16 and the steel strip, lowering the rolling temperature, preventing defects such as scratches and sticking to the rolls on the steel strip surface, and improving the rolling quality.

[0073] S7. During the rolling process, the second motor and the external negative pressure pump are started. The output shaft of the second motor drives the rotating drum 29 to rotate. The magnet 30 on the inner wall of the rotating drum 29 generates a magnetic field, which attracts the iron powder attached to the surface of the roll 16 to the outer wall of the rotating drum 29. At the same time, the negative pressure pump generates negative pressure at the air inlet 32 ​​of the negative pressure chamber 31 through the connecting hose 34. During the rotation of the rotating drum 29, its outer wall abuts against the rubber roller 40. Through friction, the rotating rod 39 and the cam 41 rotate. When the cam 41 rotates counterclockwise, its protrusion pushes the bottom plate 44 and the top rod 43 upward. The top rod 43 strikes the iron plate 37 in the scraper 36, and the iron plate 37 deforms, vibrating the iron powder scraped off the scraper 36. Under the action of the negative pressure at the air inlet 32, the vibrated iron powder is sucked into the negative pressure chamber 31 and then transported to the designated collection device through the connecting hose 34 to remove the iron powder.

[0074] S8. After the protrusion of the cam 41 rotates past the base plate 44, under the elastic force of the tension spring 45, the push rod 43 drives the base plate 44 to move down and reset, waiting for the next strike. Through this continuous strike and negative pressure adsorption, the iron powder on the surface of the rotating drum 29 can be efficiently removed, ensuring that the adsorption capacity of the magnet 30 remains stable and preventing iron powder from adhering to the surface of the roll 16 again. This effectively protects the surface quality of the roll 16 and the steel strip and extends the service life of the roll 16.

[0075] However, as is well known to those skilled in the art, the working principles and wiring methods of hydraulic cylinder Ⅲ25, double-rod hydraulic cylinder Ⅰ17 and double-rod hydraulic cylinder Ⅱ19 are all conventional methods or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0076] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0077] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rolling oil regulating component, comprising a U-shaped support (1), characterized in that, The U-shaped bracket (1) has a fixed injection pipe (2). One side of the injection pipe (2) is fixedly connected to a plurality of connecting pipes (9) arranged along its axial direction. One end of the plurality of connecting pipes (9) is provided with an atomizing nozzle (11). Two piston plates (3) are sealed and slidably connected inside the injection pipe (2). An oil storage chamber is formed between the two piston plates (3) and the inner wall of the injection pipe (2). Both sides of the injection pipe (2) are provided with liquid injection pipes (5). The ends of the two liquid injection pipes (5) that are close to each other are fixedly inserted through the corresponding piston plates (3). The injection pipe (2) is provided with an adjustment part for adjusting the distance between the two piston plates (3). By changing the distance between the two piston plates (3), the length of the oil storage chamber is adjusted, thereby controlling the coverage area of ​​the rolling oil sprayed from the atomizing nozzle (11).

2. The rolling oil regulating component according to claim 1, characterized in that, The adjustment unit includes two screws (4), a drive shaft (7), and two synchronous pulleys I (6). The two synchronous pulleys I (6) are rotatably connected to both sides of the U-shaped bracket (1). One end of each screw (4) slides through the U-shaped bracket (1) and is fixedly connected to the corresponding piston plate (3). The other end is threadedly connected to the synchronous pulley I (6). The drive shaft (7) is rotatably connected to the top of the injection pipe (2). Synchronous pulleys II (8) are fixed at both ends of the shaft. The synchronous pulleys II (8) on the same side are connected to the synchronous pulleys I (6) by a synchronous belt drive. A first motor for driving the drive shaft (7) to rotate is fixed on the U-shaped bracket (1).

3. The rolling oil regulating component according to claim 2, characterized in that, Multiple discs (10) are fixed inside the connecting pipe (9). Each of the multiple discs (10) has a through hole, and the through holes in two adjacent discs (10) are misaligned, so that the high-pressure rolling oil is forced to be diverted, impacted and merged when it passes through.

4. A cold rolling mill, comprising two sets of a rolling oil control assembly as described in claim 3, characterized in that, It also includes two mounting bases (12), a connecting plate (18) fixed between the two mounting bases (12), a lifting platform (15) slidably disposed in the vertical groove (13) of the mounting base (12), and a connecting bracket (14) slidably disposed in the vertical groove (13) and located above the lifting platform (15). The connecting bracket (14) and the two lifting platforms (15) are rotatably connected to rollers (16). One of the U-shaped brackets (1) is fixed on the connecting bracket (14), and the other U-shaped bracket (1) is fixed on the side of the two lifting platforms (15) that are close to each other. The spraying direction of the atomizing nozzles (11) on the two U-shaped brackets (1) is respectively towards the top and bottom of the roller gap inlet of the two rollers (16).

5. A cold rolling equipment according to claim 4, characterized in that, The connecting plate (18) is provided with an adjustment part, which includes a double-rod hydraulic cylinder II (19) fixed to the top of the connecting plate (18), a top plate (20) fixed to the piston rod of the double-rod hydraulic cylinder II (19), and a guide rod I (21) that connects the top plate (20) and the connecting bracket (14) at both ends respectively. Multiple double-rod hydraulic cylinders I (17) are fixed on the bottom inner wall of the vertical groove (13). The top of the piston rod of the double-rod hydraulic cylinder I (17) is fixedly connected to the bottom of the lifting platform (15).

6. A cold rolling equipment according to claim 5, characterized in that, The mounting base (12) has two bearing plates (22) fixed on one side near the U-shaped bracket (1). The two bearing plates (22) are provided with extensions on the side that are close to each other. The extensions include a U-shaped plate (24) driven by a hydraulic cylinder III (25) and slidably connected to the bearing plate (22) and a circular roller (26) rotatably connected to the U-shaped plate (24) in the longitudinal direction. The outer wall of the circular roller (26) is provided with a V-shaped groove (27).

7. A cold rolling equipment according to claim 6, characterized in that, It also includes two sets of cleaning structures, which are respectively set on the side of the connecting bracket (14) and the two lifting platforms (15) away from the U-shaped bracket (1). The cleaning structure includes two fixed arms (28), a rotating cylinder (29) rotatably connected between the two fixed arms (28), multiple magnets (30) fixed to the inner wall of the rotating cylinder (29), a second motor for driving the rotating cylinder (29) to rotate, a negative pressure chamber (31) fixed between the two fixed arms (28), and a scraper (36) fixed at the air inlet (32) of the negative pressure chamber (31). The scraper (36) abuts against the outer wall of the rotating cylinder (29), and the negative pressure chamber (31) is connected to a negative pressure pump.

8. A cold rolling equipment according to claim 7, characterized in that, A U-shaped mounting bracket (38) is fixed on the side of the negative pressure chamber (31) near the rotating cylinder (29). A rotating rod (39) is rotatably connected inside the U-shaped mounting bracket (38). A rubber roller (40) and a cam (41) are fixedly sleeved on the rotating rod (39). The rubber roller (40) abuts against the outer wall of the rotating cylinder (29). A fixing ring (42) is fixed at the top of the U-shaped mounting bracket (38). A top rod (43) slides through the fixing ring (42). A bottom plate (44) is fixed at the bottom end of the top rod (43) and abuts against the protrusion of the cam (41). The top of the top rod (43) is opposite to the bottom of the scraper (36). A limiting ring (35) located above the fixing ring (42) is sleeved on the outer wall of the top rod (43). A tension spring (45) is fixed between the limiting ring (35) and the fixing ring (42).

9. A cold rolling equipment according to claim 8, characterized in that, A sheet metal plate (37) is fixed inside the scraper (36), and the top of the top rod (43) abuts against the bottom of the sheet metal plate (37).

10. A method for producing a cold rolling mill, applied to the cold rolling mill as described in claim 9, characterized in that, Includes the following steps: S1. Control the synchronous operation of the double-rod hydraulic cylinder II (19) and the double-rod hydraulic cylinder I (17) to drive the connecting bracket (14) and the lifting platform (15) to move relative to each other along the vertical groove (13) and set the roll gap between the two rolls (16) to the preset rolling thickness value. S2. Start hydraulic cylinder Ⅲ (25) to push U-shaped plate (24) and round roller (26) to move towards the center line of the steel strip until the V-shaped groove (27) on the outer wall of the two round rollers (26) abuts against the two sides of the steel strip to be rolled. S3. Start the first motor and drive the drive shaft (7) to rotate. Drive the two screws (4) to rotate synchronously through the synchronous belt transmission assembly. Drive the two piston plates (3) to slide in opposite directions or back to back in the injection pipe (2). Adjust the length of the oil storage chamber so that the effective spray width of the atomizing nozzle (11) matches the width of the steel belt. S4. High-pressure rolling oil is injected into the oil storage chamber. The oil flows through multiple discs (10) with staggered through holes in the connecting pipe (9). After being mixed by diversion and impact, it is atomized by the atomizing nozzle (11) and sprayed onto the contact area between the roll (16) and the steel strip. S5. The traction steel belt passes through two round rollers (26), and the inclined surface of the V-groove (27) applies a lateral extrusion force pointing towards the center of the steel belt to the edge of the steel belt, causing local plastic deformation of the edge of the steel belt. S6. Drive the two rolls (16) to rotate and roll the steel strip, while repeating step S4 to maintain lubrication and cooling. S7. Start the second motor to drive the rotating drum (29) to rotate, and use the magnet (30) to adsorb the iron powder on the surface of the roller (16); start the negative pressure pump to generate negative pressure in the negative pressure chamber (31); the rotating drum (29) drives the rubber roller (40), rotating rod (39) and cam (41) to rotate through friction; when the cam (41) rotates, it periodically pushes the top rod (43) to knock the iron plate (37) in the scraper (36), which shakes up the iron powder blocked by the scraper (36) and sucks it into the negative pressure chamber (31) under the action of negative pressure and discharges it.

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