Cross polishing and coating apparatus and method for thin strip rolling compounding

Abstract

The application provides a cross polishing and coating device and method for thin strip rolling compounding, the cross polishing of the metal thin strip is achieved by the steel wire brush in the polishing device driven by the crankshaft rocker rotation device, the contact pressure between the metal thin strip and the steel wire brush is adjusted by the lifting device, and the polishing efficiency and polishing effect of the metal thin strip are greatly ensured by the combination of the two; the polishing range of the steel wire brush in the polishing device is changed by adjusting the rocker adjusting mechanism in the crankshaft rocker rotation device, and the metal thin strip of different widths is limited and guided by adjusting the limiting flange, and the polishing efficiency and effect of the metal thin strip are further improved by the combination of the two; when the metal thin strip passes through the coating device, the heterogeneous metal particles on the heterogeneous metal block are adhered to the surface of the polished metal thin strip by the polishing brush, so that a heterogeneous metal coating is formed on the surface of the metal thin strip, and the bonding strength of the rolled composite thin strip is greatly improved in the subsequent rolling compounding process with the heterogeneous metal.

Description

Technical Field

[0001] This invention belongs to the field of metal composite strip preparation technology, and particularly relates to a cross-grinding and coating device and method for strip rolling composite. Background Technology

[0002] Currently, surface treatment of the metal strip is required before cold rolling to improve the bonding strength. The main method of surface treatment is to increase the roughness of the surface to be bonded by grinding the surface of the metal strip along the rolling direction with a wire brush. During this process, the wire brush and the metal strip are squeezed and collided, generating numerous strip-shaped hardened layers and oxide layers. During the rolling process, these hardened layers and oxide layers break, and fresh metal flows into the cracks, forming preliminary mechanical interlocking.

[0003] The aforementioned grinding processes are mainly implemented through two methods: manual wire brush grinding and steel brush roller grinding. Manual wire brush grinding can only process small quantities of thin metal strips, making large-scale grinding impossible. Furthermore, the grinding intensity is difficult to control, leading to uneven grinding results. Steel brush roller grinding, on the other hand, requires multiple passes due to the limited grinding depth per pass, thus failing to guarantee uniform grinding results. Therefore, existing methods for grinding thin metal strips suffer from low grinding efficiency and uneven grinding results, thus failing to guarantee the subsequent cold-rolling composite effect.

[0004] Therefore, there is an urgent need for a cross-grinding and coating device and method that can be used for thin strip rolling composite to solve the above problems. Summary of the Invention

[0005] To address the shortcomings and deficiencies of existing technologies, a cross-grinding and coating device and method for thin strip rolling composite is provided, which can solve the problems of low grinding efficiency and uneven grinding effect in existing metal thin strip grinding methods.

[0006] To achieve the purpose of this invention, a cross-grinding and coating device for thin strip rolling composite is provided, comprising a frame, a crankshaft rocker rotating device fixed to the rear end of the top of the frame, a hinge seat in the crankshaft rocker rotating device being fixedly connected to the fixed end of the grinding device by screws, thereby using the crankshaft rocker rotating device to drive the grinding device to move horizontally reciprocatingly, the bottom of the grinding device being slidably connected to the top of the frame through a guide rail slider mechanism to improve the stability of the horizontal movement of the grinding device, a lifting device being provided below the wire brush in the grinding device for lifting the metal strip to adjust the contact pressure between the wire brush and the metal strip, and a coating device being provided at one end of the lifting device for adhering dissimilar metal particles to the surface of the metal strip being ground.

[0007] As a further improvement to the above solution, the crankshaft rocker rotation device includes a crankshaft, both ends of which are movably connected to the frame. One end of the crankshaft passes through the frame and is connected to the output shaft of the first motor via a coupling for power transmission. The first motor is fixedly connected to the frame. Multiple rockers are movably connected to the crankshaft via a rocker adjustment mechanism. A hinge seat is movably connected to the end of each rocker, and the hinge seat is fixedly connected to the end of the grinding device.

[0008] As a further improvement to the above solution, the rocker adjustment mechanism includes a screw, one end of which extends outward through the crankshaft and is fixedly connected to the adjustment knob, and the other end of which is rotatably connected to the end of the rocker shaft. Two locking nuts are fitted on the outer surface of the screw, one of which is tightly fitted to the crankshaft and the other of which is tightly fitted to the rocker shaft, so that the position of the rocker shaft can be adjusted by rotating the adjustment knob.

[0009] As a further improvement to the above solution, the grinding device includes a single-output gearbox, the input end of which is connected to the output shaft of a second motor, the end of which is fixedly connected to a hinge seat, the bottom of which is slidably connected to the top of the frame via a guide rail slider mechanism, the output end of which is fixedly connected to a grinding fixture, and the grinding fixture is fixedly connected to the rotating shaft of a wire brush.

[0010] As a further improvement to the above solution, the lifting device includes symmetrically arranged worm gear jacks. One end of the worm in one worm gear jack is connected to the output shaft of a third motor, and the other end of the worm in another worm gear jack is connected to one end of the worm in the third worm gear jack via a coupling, thereby completing the power transmission. The rotation shafts of the worm wheels in the two worm gear jacks are fixedly connected to one end of the lifting rod, so that the extension and retraction of the lifting rod can be driven by the rotation of the worm wheels in the worm gear jacks. A thin strip pad is fixed to the other end of the lifting rod to support the thin metal strip.

[0011] As a further improvement to the above solution, the coating device includes a dual-output gearbox. The bottom of the dual-output gearbox is fixedly connected to the frame. The input end of the dual-output gearbox is connected to the output shaft of a fourth motor via a coupling. The fourth motor is fixedly connected to the frame. The first output end of the dual-output gearbox is fixedly connected to the rotating shaft of the grinding brush. A gear is fixed to the second output end of the dual-output gearbox. A guide rail slider pair is fixed on the lower outer wall of the second output end of the dual-output gearbox. A rack is provided between the gear and the guide rail slider pair. The gear and the rack mesh and drive each other. The end of the rack is fixed to one end of a connecting rod. The other end of the connecting rod is fixed to the outer side of the dissimilar metal block. The meshing and driving between the gear and the rack ensure that the irregular surface of the dissimilar metal block and the grinding brush always remain in close contact.

[0012] As a further improvement to the above solution, a dust collection device is also fixed above the frame. The nozzle of the dust collection device is pointed to the upper surface of the thin strip pad, and is used to remove impurities that have been ground off the surface of the metal strip.

[0013] As a further improvement to the above solution, both ends of the thin strip pad are provided with alcohol nozzles and cleaning brushes. The alcohol nozzles spray alcohol onto the cleaning brushes, thereby enabling the cleaning brushes to clean the surface of the metal strip.

[0014] As a further improvement to the above solution, guide wheels are provided at both ends of the thin strip pad, and a limiting flange is fitted on the outer wall of the guide wheel to limit the position of the metal strip.

[0015] A method for cross-grinding and coating of thin strip for composite rolling, the specific steps of which are as follows:

[0016] Step 1: Place the metal strip on the strip pad in the lifting device, and adjust the position of the limit flange in the lifting device to limit the position of the metal strip.

[0017] Step 2: Change the type of wire brush in the grinding device to meet the requirements of the grinding operation.

[0018] Step 3: Change the type of dissimilar metal block in the coating device, and at the same time adjust the relative position of the dissimilar metal block and the polishing brush so that the irregular surface of the dissimilar metal block is in close contact with the polishing brush.

[0019] Step 4: Adjust the height of the thin strip pad in the lifting device so that the metal strip contacts the wire brush and maintains a certain contact pressure.

[0020] Step 5: Adjust the range of motion of the rocker arm using the rocker arm adjustment mechanism according to the width of the metal strip, thereby adjusting the range of the wire brush grinding.

[0021] Step six: Start the first motor in the crankshaft rocker rotation device, the second motor in the grinding device, the third motor in the coating device, and the dust collection device. The horizontal movement of the metal strip can achieve cross-grinding and coating operations; at the same time, the alcohol nozzle sprays alcohol onto the cleaning brush to clean the surface of the metal strip.

[0022] The beneficial effects of this invention are:

[0023] Compared with the prior art, the cross-grinding and coating apparatus and method for thin strip rolling composite provided by the present invention have the following advantages:

[0024] ① The crankshaft rocker rotation device drives the wire brush in the grinding device to cross-grind the metal strip. At the same time, the lifting device adjusts the contact pressure between the metal strip and the wire brush, ensuring that the wire brush fully grinds the metal strip. The combination of the two greatly ensures the grinding efficiency and grinding effect of the metal strip.

[0025] ② By adjusting the rocker adjustment mechanism in the crankshaft rocker rotation device, the grinding range of the wire brush in the grinding device is changed, thereby ensuring sufficient grinding of metal strips of different widths. At the same time, the limiting flange is adjusted to limit and guide metal strips of different widths. The combination of the two further improves the grinding efficiency and grinding effect of the metal strips.

[0026] ③ When the metal strip passes through the coating device, the grinding brush adheres the heterogeneous metal particles on the heterogeneous metal block to the surface of the ground metal strip, thereby forming a heterogeneous metal coating on the surface of the metal strip. This will greatly improve the bonding strength of the rolled composite strip in the subsequent rolling and compounding process with heterogeneous metals. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0028] Figure 2 This is a three-dimensional schematic diagram of the crankshaft rocker rotation device in this invention;

[0029] Figure 3 This is a schematic diagram of the rocker adjustment mechanism in this invention;

[0030] Figure 4 This is a schematic diagram of the grinding device in this invention;

[0031] Figure 5 This is a schematic diagram of the lifting device and the dust collection device in this invention;

[0032] Figure 6 This is a schematic diagram of the coating device in this invention;

[0033] Figure 7This is a schematic diagram of the cross-polishing and coating of the metal strip in this invention;

[0034] Figure 8 This is a schematic diagram of the metal strip being cross-polished and coated in Example 1;

[0035] Figure 9 This is a displacement-time curve of adjacent wire brushes in Example 1;

[0036] Figure 10 This is a comparison of the surface morphology of the polished metal strip in Example 1 and the ordinary polished metal strip;

[0037] Figure 11 This is a comparison of the surface morphology of the uncoated and copper-coated metal strips after polishing in Example 1.

[0038] The components are as follows: 1-Crankshaft rocker rotation device; 2-Grinding device; 3-Coating device; 4-Lifting device; 5-Frame; 6-Rocker; 7-Rocker adjustment mechanism; 8-Hinge seat; 9-Crankshaft; 10-First motor; 11-Adjustment knob; 12-Screw; 13-Locking nut; 14-Rocker shaft; 15-Wire brush; 16-Grinding fixture; 17-Single-out gearbox; 18-Second motor; 19-Guide rail slider mechanism; 20-Lifting rod; 21-Thin strip pad; 22-Dust suction device; 23-Alcohol nozzle; 24-Cleaning brush; 25-Limit flange; 26-Guide wheel; 27-Connecting shaft; 28-Worm gear lifter; 29-Third motor; 30-Fourth motor; 31-Dual-out gearbox; 32-Grinding brush; 33-Dissimilar metal block; 34-Connecting rod; 35-Rack; 36-Guide rail slider pair. Detailed Implementation

[0039] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings:

[0040] Example 1

[0041] according to Figure 1 As shown, the present invention provides a cross-grinding and coating device for thin strip rolling composite, including a frame 5. A crankshaft rocker rotating device 1 is fixed to the rear end of the top of the frame 5. The hinge seat 8 in the crankshaft rocker rotating device 1 is fixedly connected to the fixed end of the grinding device 2 by screws, thereby using the crankshaft rocker rotating device 1 to drive the grinding device 2 to move horizontally reciprocally. The bottom of the grinding device 2 is slidably connected to the top of the frame 5 through a guide rail slider mechanism 18 to improve the stability of the horizontal movement of the grinding device 2. A lifting device 4 is provided below the wire brush 15 in the grinding device 2 to lift the metal strip and adjust the contact pressure between the wire brush 15 and the metal strip. A coating device 3 is provided at one end of the lifting device 4 to adhere dissimilar metal particles to the surface of the metal strip being ground.

[0042] according to Figure 2 As shown, the crankshaft rocker rotation device 1 includes a crankshaft 9, both ends of which are movably connected to the frame 5. One end of the crankshaft 9 passes through the frame 5 and is connected to the output shaft of the first motor 10 via a coupling for power transmission. The first motor 10 is fixedly connected to the frame 5. Multiple rockers 6 are movably connected to the crankshaft 9 via a rocker adjustment mechanism 7. A hinge seat 8 is movably connected to the end of the rocker 6. The hinge seat 8 is fixedly connected to the end of the grinding device 2.

[0043] according to Figure 3 As shown, the rocker adjustment mechanism 7 includes a screw 12. One end of the screw 12 extends outward through the crankshaft 9 and is fixedly connected to the adjustment knob 11. The other end of the screw 12 is rotatably connected to the end of the rocker shaft 14. Two locking nuts 13 are fitted on the outer surface of the screw 12. One locking nut 13 is tightly fitted to the crankshaft 9, and the other locking nut 13 is tightly fitted to the rocker shaft 14. Thus, rotating the adjustment knob 11 can adjust the position of the rocker shaft 14.

[0044] according to Figure 4 As shown, the grinding device 2 includes a single-output gearbox 17. The input end of the single-output gearbox 17 is connected to the output shaft of the second motor 18. The end of the second motor 18 is fixedly connected to the hinge seat 8. The bottom of the single-output gearbox 17 is slidably connected to the top of the frame 5 through the guide rail slider mechanism 19. The output end of the single-output gearbox 17 is fixedly connected to the grinding fixture 16. The grinding fixture 16 is fixedly connected to the rotating shaft of the wire brush 15.

[0045] according to Figure 5 As shown, the lifting device 4 includes symmetrically arranged worm gear lifts 28. One end of the worm in one worm gear lift 28 is connected to the output shaft of the third motor 29, and the other end of the worm in one worm gear lift 28 is connected to one end of the worm in the other worm gear lift 28 through a coupling 27, thereby completing the power transmission. The rotation shafts of the worm wheels in the two worm gear lifts 28 are fixedly connected to one end of the lifting rod 20, so that the rotation of the worm wheels in the worm gear lift 28 can drive the lifting rod 20 to extend and retract. A thin strip pad 21 is fixed to the other end of the lifting rod 20 for supporting the metal strip. Among them: a dust collection device 22 is fixed on the top of the frame 5. The nozzle of the dust collection device 22 is pointed to the upper surface of the thin strip pad 21 to remove impurities that are ground off the surface of the metal strip. Both ends of the thin strip pad 21 are provided with alcohol nozzles 23 and cleaning brushes 24. The alcohol nozzles 23 spray alcohol onto the cleaning brushes 24, so that the cleaning brushes 24 can clean the surface of the metal strip. Both ends of the thin strip pad 21 are provided with guide wheels 26. The outer wall of the guide wheels 26 is fitted with limiting flanges 25 to limit the position of the metal strip.

[0046] according to Figure 6 As shown, the coating device 3 includes a dual-output gearbox 31. The bottom of the dual-output gearbox 31 is fixedly connected to the frame 5. The input end of the dual-output gearbox 31 is connected to the output shaft of the fourth motor 30 through a coupling. The fourth motor 30 is fixedly connected to the frame 5. The first output end of the dual-output gearbox 31 is fixedly connected to the rotating shaft of the polishing brush 32. A gear is fixed to the second output end of the dual-output gearbox 31. A guide rail slider pair 36 is fixed on the lower outer wall of the second output end of the dual-output gearbox 31. A rack 35 is provided between the gear and the guide rail slider pair 36. The gear and the rack 35 mesh and drive each other. The end of the rack 35 is fixed to one end of the connecting rod 34. The other end of the connecting rod 34 is fixed to the outer side of the dissimilar metal block 33. The meshing and driving between the gear and the rack 35 ensures that the irregular surface of the dissimilar metal block 33 and the polishing brush 32 always remain in close contact.

[0047] The following formula is derived by substituting the rotational speed n of the selected first motor 10 and the adjustment distance x in the rocker adjustment mechanism 7:

[0048]

[0049] S = x + 20

[0050] The grinding cycle T and grinding width range S of the grinding device 2 are calculated. For example, the adjustment distance x∈[0,60] of the rocker adjustment mechanism 7 in this device, so the grinding width range S∈[20,80], this device performs cross-grinding on metal strips with a width of 20-80mm.

[0051] Therefore, the relationship between the displacement X of each adjacent wire brush 15 and time t is derived as follows:

[0052]

[0053] This allows us to obtain the displacement-time curves of adjacent wire brushes, as shown in the following figure. Figure 9 As shown.

[0054] according to Figure 7-8 As shown, this invention provides a method for cross-grinding and coating of thin strip rolled composites. Copper and stainless steel are selected as two extremely difficult-to-composite materials. The method requires surface grinding of a copper strip with a width of 35mm and a thickness of 0.3mm, and a stainless steel strip with a width of 35mm and a thickness of 0.2mm. The specific steps are as follows:

[0055] Step 1: Place the copper strip or stainless steel strip on the thin strip pad 21 in the lifting device 4, and adjust the limiting flange 25 in the lifting device 4 to 35mm to limit the position of the copper strip or stainless steel strip.

[0056] Step 2: The wire brush 15 in the grinding device 2 is a WB-93 type twisted wire brush with a width of 30mm, a diameter of 100mm, and a wire diameter of 0.5mm, so that the wire brush 15 meets the requirements of the grinding operation.

[0057] Step 3: The non-metallic block 33 in the coating device 3 is made of copper. At the same time, the relative position of the non-metallic block 33 and the polishing brush 32 is adjusted so that the irregular surface of the non-metallic block 33 is in close contact with the polishing brush 32.

[0058] Step 4: Adjust the height of the thin strip pad 21 in the lifting device 4 so that the metal strip contacts the wire brush 15 and maintains a certain contact pressure.

[0059] Step 5: Adjust the range of motion of the rocker arm 6 using the rocker arm adjustment mechanism 7 according to the width of the metal strip, thereby adjusting the grinding range of the wire brush 15.

[0060] Step six: Start the first motor 10 in the crankshaft rocker rotation device 1, the second motor 18 in the grinding device 2, the third motor 29 in the coating device 3, and the dust collection device 22. The horizontal movement of the metal strip can realize cross grinding and coating operations; at the same time, the alcohol nozzle 23 sprays alcohol onto the cleaning brush 24 to clean the surface of the metal strip.

[0061] according to Figure 10 As shown, although the surface of the metal strip after conventional grinding is rough, the oxide and hardened layers are relatively small and unevenly distributed. After cross-grinding according to this invention, the oxide and hardened layers on the metal strip surface are more prominent and evenly distributed. This results in a tighter mechanical interlocking during subsequent rolling due to the cracking of the oxide and hardened layers and the inflow of fresh metal, significantly improving the bonding strength.

[0062] like Figure 11 As shown, a layer of copper metal particles adheres to the surface of the metal strip after cross-grinding. These copper metal particles encapsulate the fresh stainless steel metal, delaying its oxidation and effectively solving the problem of metal strip oxidation affecting rolling bonding. At the same time, the adhered copper metal particles, as a metal coating, make it easier to bond with the copper metal strip in subsequent rolling and bonding processes, and improve the bonding strength.

[0063] The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments can be combined with each other to form new embodiments. The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of the technical solutions of the present invention.

Claims

1. A cross-grinding and coating apparatus for thin strip rolling composite, characterized in that: The device includes a frame (5), and a crankshaft rocker rotating device (1) is fixed to the rear end of the top of the frame (5). The hinge seat (8) in the crankshaft rocker rotating device (1) is fixedly connected to the fixed end of the grinding device (2) by screws, so that the crankshaft rocker rotating device (1) drives the grinding device (2) to move horizontally back and forth. The bottom of the grinding device (2) is slidably connected to the top of the frame (5) through a guide rail slider mechanism (19) to improve the stability of the horizontal movement of the grinding device (2). A lifting device (4) is provided below the wire brush (15) in the grinding device (2) to lift the metal strip and adjust the contact pressure between the wire brush (15) and the metal strip. A coating device is provided at one end of the lifting device (4). (3) Used to adhere heterogeneous metal particles to the surface of the metal strip being polished. The crankshaft rocker rotating device (1) includes a crankshaft (9). Both ends of the crankshaft (9) are movably connected to the frame (5). One end of the crankshaft (9) passes through the frame (5) and is connected to the output shaft of the first motor (10) through a coupling for power transmission. The first motor (10) is fixedly connected to the frame (5). Multiple rockers (6) are movably connected to the crankshaft (9) through a rocker adjusting mechanism (7). A hinge seat (8) is movably connected to the end of the rocker (6). The hinge seat (8) is fixedly connected to the end of the polishing device (2). The rocker adjusting mechanism (7) includes a screw (12). One end of the screw (12) passes through the frame (5) and is connected to the output shaft of the first motor (10) through a coupling for power transmission. The crankshaft (9) extends outward and is fixedly connected to the adjustment knob (11). The other end of the screw (12) is rotatably connected to the end of the rocker shaft (14). Two locking nuts (13) are fitted on the outer surface of the screw (12). One locking nut (13) is tightly fitted to the crankshaft (9), and the other locking nut (13) is tightly fitted to the rocker shaft (14). Thus, rotating the adjustment knob (11) can adjust the position of the rocker shaft (14). The coating device (3) includes a dual-output gearbox (31). The bottom of the dual-output gearbox (31) is fixedly connected to the frame (5). The input end of the dual-output gearbox (31) is connected to the output shaft of the fourth motor (30) through a coupling. The fourth motor (30) and The frame (5) is fixedly connected. The first output end of the dual-output gearbox (31) is fixedly connected to the shaft of the polishing brush (32). The second output end of the dual-output gearbox (31) is fixed with a gear. A guide rail slider pair (36) is fixed on the lower outer wall of the second output end of the dual-output gearbox (31). A rack (35) is provided between the gear and the guide rail slider pair (36). The gear and the rack (35) mesh and drive each other. The end of the rack (35) is fixed to one end of the connecting rod (34). The other end of the connecting rod (34) is fixed to the outside of the dissimilar metal block (33). The meshing and driving between the gear and the rack (35) ensure that the irregular surface of the dissimilar metal block (33) and the polishing brush (32) are always in close contact.

2. The cross-grinding and coating device for thin strip rolling composite according to claim 1, characterized in that: The grinding device (2) includes a single-output gearbox (17), the input end of which is connected to the output shaft of a second motor (18), the end of which is fixedly connected to a hinge seat (8), the bottom of which is slidably connected to the top of the frame (5) via a guide rail slider mechanism (19), the output end of which is fixedly connected to a grinding fixture (16), and the grinding fixture (16) is fixedly connected to the rotating shaft of a wire brush (15).

3. The cross-grinding and coating device for thin strip rolling composite according to claim 2, characterized in that: The lifting device (4) includes symmetrically arranged worm gear lifts (28). One end of the worm in one worm gear lift (28) is connected to the output shaft of the third motor (29). The other end of the worm in one worm gear lift (28) is connected to one end of the worm in another worm gear lift (28) through a coupling (27), thereby completing the power transmission. The rotation shaft of the worm wheels in the two worm gear lifts (28) is fixedly connected to one end of the lifting rod (20), so that the lifting rod (20) can be extended and retracted by rotating the worm wheels in the worm gear lift (28). The other end of the lifting rod (20) is fixed with a thin strip pad (21) for supporting the metal strip.

4. The cross-grinding and coating device for thin strip rolling composite according to claim 3, characterized in that: A dust collection device (22) is also fixed above the frame (5). The nozzle of the dust collection device (22) points to the upper surface of the thin strip pad (21) and is used to remove impurities that have been ground off the surface of the metal strip.

5. The cross-grinding and coating apparatus for thin strip rolling composite according to claim 4, characterized in that: Both ends of the thin strip pad (21) are provided with alcohol nozzles (23) and cleaning brushes (24). The alcohol nozzles (23) spray alcohol onto the cleaning brushes (24), thereby enabling the cleaning brushes (24) to clean the surface of the metal strip.

6. The cross-grinding and coating apparatus for thin strip rolling composite according to claim 5, characterized in that: Both ends of the thin strip pad (21) are provided with guide wheels (26), and the outer wall of the guide wheel (26) is fitted with a limiting flange (25) to limit the position of the metal strip.

7. A method for cross-grinding and coating of thin strip rolling composite using the apparatus of claim 6, characterized in that: The specific steps are as follows: Step 1: Place the metal strip on the strip pad (21) in the lifting device (4), and adjust the position of the limiting flange (25) in the lifting device (4) to limit the position of the metal strip. Step 2: Change the wire brush (15) in the grinding device (2) to make the wire brush (15) meet the requirements of the grinding operation; Step 3: Change the type of the heterogeneous metal block (33) in the coating device (3), and at the same time adjust the relative position of the heterogeneous metal block (33) and the polishing brush (32) so that the irregular surface of the heterogeneous metal block (33) is in close contact with the polishing brush (32). Step 4: Adjust the height of the thin strip pad (21) in the lifting device (4) so ​​that the metal strip contacts the wire brush (15) and maintains a certain contact pressure; Step 5: Adjust the range of motion of the rocker (6) by means of the rocker adjustment mechanism (7) according to the width of the metal strip, thereby completing the adjustment of the grinding range of the wire brush (15); Step 6: Start the first motor (10) in the crankshaft rocker rotation device (1), the second motor (18) in the grinding device (2), the third motor (29) in the coating device (3), and the dust collection device (22). The metal strip moves horizontally to achieve cross-grinding and coating operations. At the same time, the alcohol nozzle (23) sprays alcohol onto the cleaning brush (24) to clean the surface of the metal strip.

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