A metal coil acid-free grinding and brushing rust removal device

Abstract

This invention discloses an acid-free brush rust removal device for metal coils, comprising a brush assembly, a deburring and alignment assembly, a flushing machine, and a squeezing assembly arranged sequentially. The brush assembly is used for double-sided brush rust removal of the metal coil. The resetting assembly is used to intermittently squeeze and reset the coil that has shifted position after brushing, and simultaneously grinds the burrs on the edge of the coil. The squeezing assembly is used to continuously roll and squeeze the surface of the flushed coil, and simultaneously automatically absorbs and squeezes out the squeezed water. This invention utilizes a densely distributed water-absorbing pad on the surface of the squeezing roller, combined with highly elastic absorbent cotton inside, to continuously absorb residual moisture on both sides of the coil. Simultaneously, relying on the rotational power of the squeezing roller, the absorbent cotton is intermittently squeezed, quickly squeezing out the absorbed water and discharging it unidirectionally through a water outlet pipe with a one-way valve. This allows for immediate, uniform, and thorough dehydration treatment of the rust-removed metal coil.

Description

Technical Field

[0001] This invention relates to the field of brush rust removal equipment, and more particularly to an acid-free brush rust removal device for metal coils. Background Technology

[0002] Steel manufacturers produce and transport coils to metal product manufacturers such as standard parts manufacturers, or the coils undergo rust removal treatment by rust removal equipment. This ensures that the internal metallographic structure, surface smoothness, and straightness of the coils meet the raw material processing requirements for the production of standard parts and other metal products. Therefore, the quality of the pretreatment of coils by rust removal equipment directly affects the product quality of standard parts and other metal product manufacturers.

[0003] Current rust removal equipment typically involves rinsing and drying the metal coils after brushing to remove rust. However, conventional drying methods, such as hot or air drying, can easily cause surface deformation of the brushed coils and require excessively long drying times, resulting in poor performance. Therefore, this application proposes an acid-free brushing rust removal device for metal coils. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an acid-free abrasive brush rust removal device for metal coils.

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

[0006] A non-acid-treated brush rust removal device for metal coils includes a conveying base, a fixing frame, a brush machine, a brush assembly, a deburring and de-alignment assembly, and a drying assembly, characterized in that:

[0007] Along the conveying direction of the metal coil, the grinding brush assembly, the deburring and straightening assembly, the flushing machine and the squeezing assembly are arranged in sequence; the grinding brush assembly includes two fixed plates fixedly installed on both sides of the top of the fixed frame, and two grinding brush rollers that are rotatably connected between the two fixed plates and are opposite to each other.

[0008] The deburring and straightening assembly includes two fixed blocks respectively disposed on the outer sides of two fixed plates, two fixed sleeves respectively disposed on the two fixed blocks, two first reciprocating screws respectively rotatably disposed within the two fixed sleeves, a straightening roller coaxially fixed between the two first reciprocating screws, two first screw nuts respectively threadedly connected to the two first reciprocating screws, and two annular grinding plates respectively disposed on the outer sides of both ends of the straightening roller; the two first screw nuts are respectively connected to the corresponding grinding plates through an elastic connection structure. After the power of the grinding assembly is transmitted to the first reciprocating screws, the two grinding plates reciprocate along the axial direction of the straightening roller to guide and deburr the two sides of the metal coil.

[0009] The squeezing assembly includes two side plates fixedly mounted on both sides of the top of one end of the conveying base and two squeezing rollers rotatably mounted between the two side plates; each squeezing roller has several water-absorbing pads on its outer periphery, and the inner side of the water-absorbing pads contacts the absorbent cotton inside the roller through the mounting groove on the roller wall; each squeezing roller has a second reciprocating screw, a second screw nut threadedly connected to the second reciprocating screw, a piston plate fixedly connected to the second screw nut, and a sealing plate located at one end of the absorbent cotton; the rotational power of the squeezing roller is transmitted to the second reciprocating screw through a gear transmission structure, causing the piston plate to reciprocate and compress the absorbent cotton; the sealing plate has a water outlet pipe extending to the outside of the side plate and having a one-way valve inside;

[0010] The flushing machine is fixedly installed on the top of the conveying base and located between the correction and deburring assembly and the squeezing assembly.

[0011] Preferably, a support frame is fixedly provided on one side of the fixed frame, and a material roller is rotatably provided on the support frame; a first gear is rotatably provided on the outer side of one of the fixed plates and fixedly connected to a brush roller, and a second gear is rotatably provided on the outer side of the same fixed plate and fixedly connected to another brush roller, the first gear and the second gear meshing; a first motor is fixedly provided on the outer side of the other fixed plate, and the drive end of the first motor is fixedly connected to one of the brush rollers.

[0012] Preferably, the two first reciprocating screws are coaxially fixed at both ends of the straightening roller; four support rods are fixedly provided on the outer side of each first screw nut, and guide rods parallel to the first reciprocating screws are fixedly provided on the inner side of the two fixing blocks respectively. One support rod on each first screw nut is slidably connected to the corresponding guide rod to restrict the first screw nut from rotating with the first reciprocating screw.

[0013] Preferably, a washer is fixedly provided at the end of each support rod, and a slide rod slides through the washer and the corresponding support rod. A pad is fixedly provided at the end of the slide rod near the straightening roller. Four pads located at the same end of the straightening roller are fixedly connected to a grinding plate. A spring sleeved on the outside of the slide rod is provided between each pad and the corresponding washer. A first synchronous pulley is fixedly provided at the end of one of the first reciprocating screws, and another first synchronous pulley is fixedly provided on the outside of the second gear. The two first synchronous pulleys are connected by a first synchronous belt.

[0014] Preferably, a plurality of absorbent pads are spaced apart circumferentially along the squeezing roller and extend axially; a second reciprocating screw in each squeezing roller is rotatably connected to the inner side of the corresponding side plate, and a guide rod parallel to the second reciprocating screw is fixedly provided on the inner side of the corresponding side plate, the guide rod slidingly penetrating the piston plate; the outer periphery of the piston plate slides in fit with the inner wall of the squeezing roller.

[0015] Preferably, the sealing plate is fixedly installed inside the squeezing roller and divides the roller space into a water absorption chamber and a transmission chamber. The absorbent cotton is filled in the water absorption chamber between the sealing plate and the piston plate. The water outlet pipe is connected to the water absorption chamber, and one end of the second reciprocating screw rotates through the sealing plate and extends into the transmission chamber.

[0016] Preferably, the gear transmission structure includes a third gear fixedly disposed at one end of the second reciprocating screw extending into the transmission cavity, a fourth gear rotatably connected to the inner side of the corresponding side plate, and a planetary gear ring fixedly disposed on the inner wall of the squeezing roller; the third gear and the planetary gear ring respectively mesh with the fourth gear, and the third gear, the fourth gear and the planetary gear ring are all located on the side of the sealing plate away from the absorbent cotton.

[0017] Preferably, a second motor is fixedly installed on the outer side of one of the side plates, and the drive end of the second motor is fixedly connected to one of the squeezing rollers; a second synchronous pulley is fixedly installed on the same end of the two squeezing rollers respectively, and the two second synchronous pulleys are connected by a cross-wound second synchronous belt, so that the two squeezing rollers rotate in opposite directions.

[0018] Preferably, the helical directions and reversing positions of the two first reciprocating screws are symmetrically arranged so that the two grinding plates move synchronously towards or away from each other; both grinding plates are annular and are slidably sleeved on the outer sides of both ends of the straightening roller, with a gap between the inner circumferential surface of the grinding plate and the outer circumferential surface of the straightening roller, and the opposite sides of the two grinding plates respectively form grinding surfaces for contacting the sides of the metal coil.

[0019] Preferably, the absorbent cotton is an elastic compressible absorbent sponge, the absorbent pad is an elastic permeable pad, the inner side of the absorbent pad passes through the corresponding mounting groove and fits against the absorbent cotton; the outer periphery of the piston plate is provided with a sealing ring that slides and seals with the inner wall of the squeezing roller.

[0020] The present invention has the following beneficial effects:

[0021] 1. The water-absorbing pads densely distributed on the surface of the squeeze roller, combined with the internal high-elasticity absorbent cotton, continuously absorb residual moisture on both sides of the roll material. At the same time, relying on the self-rotation power of the squeeze roller, the second reciprocating screw and piston plate are driven by the planetary gear set to reciprocate, intermittently squeezing the absorbent cotton and quickly squeezing out the absorbed water, which is then discharged in one direction through the water outlet pipe with a one-way valve. This forms a fully automatic closed-loop dehydration process of water absorption, water storage, water squeezing, and water drainage. It can perform immediate, uniform, and thorough dehydration treatment on the rust-removed metal roll material, with no water residue or backflow problems. It eliminates the defects of secondary rusting and yellowing of the roll material after rust removal from the root, effectively ensuring the corrosion resistance and service life of the metal roll material in subsequent use.

[0022] 2. The roll material is symmetrically clamped and conveyed by two squeeze rollers. With the densely distributed water-absorbing pads on the roller surface, the residual moisture on both sides of the roll material can be continuously absorbed, achieving immediate squeezing and dehydration. Secondly, the second reciprocating screw drives the piston plate to perform reciprocating push-pull motion, which, together with the sealing plate, forms a sealed cavity. This cavity can intermittently squeeze the internal elastic absorbent cotton, quickly squeezing out the water absorbed by the absorbent cotton and automatically discharging it out through the water outlet pipe with a one-way valve. This completely solves the problem of traditional absorbent cotton becoming ineffective after saturation and water flowing back and adhering to the roll material.

[0023] 3. The synchronous power of the grinding operation drives the first reciprocating screw to rotate, which in turn drives the straightening roller to intermittently reset and correct the metal coil that is dynamically offset due to lateral friction during the grinding process. This corrects the offset of the coil in real time, solving the problems of coil deviation, large alignment deviation, and high scrap rate in subsequent processing under dynamic grinding conditions. At the same time, a ring-shaped floating grinding plate and spring elastic buffer structure are set up to surround the straightening roller to perform all-round deburring treatment on the edge of the coil. Relying on the spring to adaptively adjust the grinding force, it can not only remove the sharp burrs and flash generated after the coil grinding, but also avoid rigid grinding and squeezing damage to the coil edge substrate, realizing the integrated and simultaneous completion of rust removal, deviation correction and deburring.

[0024] 4. The first reciprocating screw drives the screw nut to perform reciprocating linear motion, which in turn drives the straightening roller to intermittently fine-tune its position. This can squeeze and straighten the metal coil that has shifted position after grinding, automatically correcting the lateral offset error of the coil, ensuring the alignment of the coil in subsequent conveying and squeezing processes, and avoiding processing scrap caused by coil offset. The annular grinding plate is slidably sleeved on the outside of the straightening roller without contacting it. It can synchronously grind and clean the burrs on the annular edge of the coil with the coil straightening action, without grinding dead corners. At the same time, the spring between the pad and the shim forms an elastic buffer structure, which can automatically fine-tune the grinding force according to the thickness of the coil and the size of the burrs, ensuring that the burrs are completely removed while avoiding rigid grinding and squeezing damage to the edge of the coil. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the main structure of an acid-free grinding and brushing rust removal device for metal coils proposed in this invention;

[0026] Figure 2 This is a side view of a metal coil non-acid-removing brush rust removal device proposed in this invention.

[0027] Figure 3 This is a schematic diagram of the brush assembly in this invention;

[0028] Figure 4 This is a schematic diagram of the structure of the deburring and ripping component in this invention;

[0029] Figure 5This is a schematic diagram of one side of the anti-corrosion and deburring component in this invention;

[0030] Figure 6 This is a schematic diagram of the extrusion assembly in this invention;

[0031] Figure 7 This is a schematic diagram of the extrusion roller in the present invention;

[0032] Figure 8 This is a schematic diagram of the internal structure of the extrusion roller in this invention;

[0033] Figure 9 This is a schematic diagram of the planetary gear ring's operating structure in this invention.

[0034] In the diagram: 1. Conveying base, 2. Fixing frame, 3. Flushing machine, 4. Support frame, 5. Material roller, 6. Fixing plate, 7. Grinding brush roller, 8. First gear, 9. Second gear, 10. First motor, 11. Fixing block, 12. Fixing sleeve, 13. First reciprocating screw, 14. Straightening roller, 15. First screw nut, 16. Support rod, 17. Washer, 18. Slide rod, 19. Pad, 20. Grinding plate, 21. Spring, 22. First synchronous pulley, 23. First synchronous belt, 24. Side plate, 25. Squeezing roller, 26. Water-absorbing pad, 27. Second reciprocating screw, 28. Guide rod, 29. Second screw nut, 30. Piston plate, 31. Sealing plate, 32. Water-absorbing cotton, 33. Water outlet pipe, 34. Third gear, 35. Fourth gear, 36. Planetary gear ring, 37. Second motor, 38. Second synchronous pulley, 39. Second synchronous belt. Detailed Implementation

[0035] 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.

[0036] Example 1:

[0037] Reference Figures 1 to 3 A metal coil acid-free grinding and brushing rust removal device includes a conveying base 1, a fixed frame 2, a flushing machine 3, a grinding and brushing assembly, a deburring and straightening assembly, and a squeezing and drying assembly. The grinding and brushing assembly, the deburring and straightening assembly, the flushing machine 3 and the squeezing and drying assembly are arranged sequentially along the conveying direction of the metal coil.

[0038] The brush assembly includes two fixed plates 6 fixedly mounted on both sides of the top of the fixed frame 2, and two brush rollers 7 that are opposite each other and rotatably connected between the two fixed plates 6. A double-sided brushing gap is formed between the two brush rollers 7 for the metal coil to pass through.

[0039] The deburring and straightening assembly includes two fixing blocks 11 respectively disposed on the outer side of two fixing plates 6, two fixing sleeves 12 respectively disposed on the two fixing blocks 11, two first reciprocating screws 13 respectively rotatably disposed in the two fixing sleeves 12, a straightening roller 14 coaxially fixed between the two first reciprocating screws 13, and two annular grinding plates 20 respectively disposed on the outer side of both ends of the straightening roller 14.

[0040] The squeezing assembly includes two side plates 24 fixedly disposed on both sides of the top of one end of the conveying base 1, and two squeezing rollers 25 that are rotatably disposed between the two side plates 24 and opposite to each other. A squeezing gap is formed between the two squeezing rollers 25 for the metal coil to pass through.

[0041] The flushing machine 3 is fixedly installed on the top of the conveying base 1 and located between the correction and deburring assembly and the squeezing assembly, and is used to flush away rust and abrasive particles from the surface of the roll material.

[0042] A support frame 4 is fixedly installed on one side of the fixed frame 2. A material roller 5 is rotatably installed on the support frame 4. A first gear 8 is rotatably installed on the outer side of one of the fixed plates 6, which is fixedly connected to one of the brush rollers 7, and a second gear 9 is fixedly connected to another brush roller 7. The first gear 8 and the second gear 9 mesh with each other. A first motor 10 is fixedly installed on the outer side of the other fixed plate 6. The drive end of the first motor 10 is fixedly connected to one of the brush rollers 7.

[0043] Two fixing plates 6 are symmetrically installed on the top sides of the fixing frame 2, and two grinding rollers 7 are arranged vertically opposite each other. After the metal coil is released from the material roller 5, it enters between the two grinding rollers 7, and the two grinding rollers 7 contact the upper and lower surfaces of the coil respectively;

[0044] After the first motor 10 is started, one of the brush rollers 7 rotates. The meshing of the first gear 8 and the second gear 9 causes the other brush roller 7 to rotate in the opposite direction. The two brush rollers 7 form a consistent tangential speed in the roll material conveying direction, and mechanically brush the upper and lower surfaces of the roll material at the same time. This process does not use pickling solution. The rust chips generated by brushing are carried away from the surface of the roll material by water flow in the subsequent flushing machine 3.

[0045] Example 2:

[0046] Reference Figures 3 to 5Compared to Embodiment 1, this embodiment further describes the deburring and straightening assembly. Two first reciprocating screws 13 are coaxially fixed at both ends of the straightening roller 14. Each first reciprocating screw 13 is threaded with a first screw nut 15. Four support rods 16 are fixedly arranged on the outer side of each first screw nut 15. Guide rods parallel to the first reciprocating screw 13 are fixedly arranged on the inner side of the two fixing blocks 11. One support rod 16 on each first screw nut 15 is slidably connected to the corresponding guide rod, so that the first screw nut 15 moves axially when the first reciprocating screw 13 rotates without rotating with it.

[0047] Each support rod 16 has a washer 17 fixedly installed at its end. A slide rod 18 slides through the washer 17 and the corresponding support rod 16. A pad 19 is fixedly installed at the end of the slide rod 18 near the straightening roller 14. Four pads 19 located at the same end of the straightening roller 14 are fixedly connected to a circular grinding plate 20, thereby forming two grinding plates 20 located at both ends of the straightening roller 14. A spring 21 is provided between each pad 19 and the corresponding washer 17 and sleeved on the outside of the slide rod 18. A first synchronous pulley 22 is fixedly installed at the end of a first reciprocating screw 13. Another first synchronous pulley 22 is fixedly installed on the outside of the second gear 9. The two first synchronous pulleys 22 are connected by a first synchronous belt 23.

[0048] Two grinding plates 20 are slidably sleeved on the outer sides of both ends of the straightening roller 14. A gap is left between the inner circumferential surface of the grinding plate 20 and the outer circumferential surface of the straightening roller 14, so that the grinding plate 20 can move along the axial direction of the straightening roller 14 without interfering with the rotation of the straightening roller 14. The opposite sides of the two grinding plates 20 form grinding surfaces facing the side of the roll material. The spiral direction and reversing position of the two first reciprocating screws 13 are symmetrically arranged so that the two grinding plates 20 move synchronously towards or away from each other.

[0049] When the brush roller 7 rotates, the second gear 9 drives the first reciprocating screw 13 and the straightening roller 14 to rotate via the first synchronous wheel 22 and the first synchronous belt 23. The two first screw nuts 15, which are restricted by the guide rod, move back and forth along the corresponding first reciprocating screw 13, and drive the two grinding plates 20 to move axially along the straightening roller 14 via the support rod 16, the slide rod 18 and the pad 19. When the roll material shifts to one side, the corresponding grinding plate 20 contacts the side of the roll material and applies a guiding force toward the two grinding plates 20, so that the roll material returns to center before entering the flushing machine 3 and the extrusion assembly.

[0050] While the grinding plate 20 contacts the side of the roll material, its grinding surface grinds the burrs on the side. When the width of the roll material fluctuates or the local burrs increase, the grinding plate 20 can drive the pad 19 and the slide bar 18 to axially retract relative to the support rod 16 and compress the spring 21. The spring 21 maintains the grinding contact and limits the instantaneous extrusion force, thereby reducing the possibility of the side of the roll material being rigidly extruded to form indentations or curling.

[0051] Example 3:

[0052] Reference Figures 6 to 9 Compared with Embodiment 1 and Embodiment 2, this embodiment further describes the squeezing assembly. The outer periphery of each of the two squeezing rollers 25 is provided with a plurality of axially extending water-absorbing pads 26. The plurality of water-absorbing pads 26 are distributed at intervals along the circumference of the squeezing rollers 25. The roller wall of the squeezing rollers 25 is provided with mounting grooves corresponding to the water-absorbing pads 26 along the axial direction. The inner side of the water-absorbing pads 26 passes through the mounting grooves and is attached to the water-absorbing cotton 32 inside the roller.

[0053] Each squeezing roller 25 is rotatably equipped with a second reciprocating screw 27, and a second screw nut 29 is threaded onto the second reciprocating screw 27. A guide rod 28 parallel to the second reciprocating screw 27 is fixedly installed on the inner side of the corresponding side plate 24. The guide rod 28 slides through the piston plate 30. A piston plate 30 is fixedly installed on the outer side of the second screw nut 29. A sealing ring is provided on the outer periphery of the piston plate 30 and slides and seals with the inner wall of the squeezing roller 25.

[0054] A sealing plate 31 is fixedly installed inside the squeeze roller 25 near one end. The sealing plate 31 divides the space inside the roller into a water absorption chamber and a transmission chamber. Elastic and compressible absorbent cotton 32 fills the water absorption chamber between the sealing plate 31 and the piston plate 30. A water outlet pipe 33 communicating with the water absorption chamber is fixedly installed on the sealing plate 31. The water outlet pipe 33 extends to the outside of the corresponding side plate 24 and is equipped with a one-way valve inside. One end of the second reciprocating screw 27 rotates through the sealing plate 31 and extends into the transmission chamber.

[0055] A third gear 34 is fixedly installed at one end of the second reciprocating screw 27 that extends into the transmission cavity. A fourth gear 35 is rotatably connected to the inner side of the corresponding side plate 24 below the third gear 34. A planetary gear ring 36 is fixedly installed on the inner wall of the squeeze roller 25. The third gear 34 and the planetary gear ring 36 mesh with the fourth gear 35 respectively. A second motor 37 is fixedly installed on the outer side of one of the side plates 24. The drive end of the second motor 37 is fixedly connected to one of the squeeze rollers 25. A second synchronous pulley 38 is fixedly installed at the same end of the two squeeze rollers 25 respectively. The two second synchronous pulleys 38 are connected by a cross-wound second synchronous belt 39.

[0056] After the second motor 37 starts, it directly drives one squeezing roller 25 to rotate, and drives another squeezing roller 25 to rotate in the opposite direction through two second synchronous pulleys 38 and a cross-wound second synchronous belt 39. The two squeezing rollers 25 form a tangential velocity in the same direction at the squeezing gap, and together clamp and transport the metal roll. The water-absorbing pads 26 are respectively attached to the upper and lower surfaces of the roll, and the water on the surface of the roll is transferred to the water-absorbing cotton 32 through the installation groove from the water-absorbing pads 26.

[0057] When the squeeze roller 25 rotates, the planetary gear ring 36 fixed on its inner wall rotates synchronously, and drives the third gear 34 and the second reciprocating screw 27 to rotate via the fourth gear 35. Since the guide rod 28 restricts the rotation of the piston plate 30, the second screw nut 29 drives the piston plate 30 to move back and forth along the axial direction of the second reciprocating screw 27. The third gear 34, the fourth gear 35 and the planetary gear ring 36 are located in the transmission cavity, separated from the water absorption cavity where the absorbent cotton 32 is located.

[0058] When the piston plate 30 moves toward the sealing plate 31, it compresses the absorbent cotton 32, causing the water in the absorbent cotton 32 to flow toward the outlet pipe 33 and open the one-way valve to discharge it. When the piston plate 30 moves in the opposite direction, the absorbent cotton 32 returns to its shape and continues to absorb water from the absorbent pad 26. The one-way valve restricts the water in the outlet pipe 33 from flowing back to the absorbent chamber. The piston plate 30 repeats the above actions as the squeezing roller 25 rotates, so that the absorbent cotton 32 drains water periodically during the continuous squeezing process.

[0059] After the metal coil is released from the material roller 5, it passes in sequence through the double-sided brushing gap between the two brush rollers 7, the correction and deburring position above the straightening roller 14, and the squeezing gap between the flushing machine 3 and the two squeezing rollers 25. The coil has been guided by the two grinding plates 20 before entering the squeezing gap, so its two sides can be more evenly clamped by the two squeezing rollers 25. The water after squeezing is discharged from the inside of the squeezing rollers 25, and there is no need to dry the coil with hot air for a long time.

[0060] 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 non-acid-treated brush rust removal device for metal coils, comprising a conveying base (1), a fixing frame (2), a brushing machine (3), a brush assembly, a deburring and straightening assembly, and a drying assembly, characterized in that: Along the conveying direction of the metal coil, the grinding brush assembly, the deburring and correction assembly, the flushing machine (3) and the squeezing assembly are arranged in sequence; the grinding brush assembly includes two fixed plates (6) fixedly arranged on both sides of the top of the fixed frame (2), and two grinding brush rollers (7) that are opposite to each other and rotatably connected between the two fixed plates (6). The deburring and straightening assembly includes two fixed blocks (11) respectively disposed on the outer sides of two fixed plates (6), two fixed sleeves (12) respectively disposed on the two fixed blocks (11), two first reciprocating screws (13) respectively rotatably disposed in the two fixed sleeves (12), a straightening roller (14) coaxially fixed between the two first reciprocating screws (13), two first screw nuts (15) respectively threadedly connected to the two first reciprocating screws (13), and two annular grinding plates (20) respectively disposed on the outer sides of both ends of the straightening roller (14); the two first screw nuts (15) are respectively connected to the corresponding grinding plates (20) through elastic connection structures. After the power of the grinding assembly is transmitted to the first reciprocating screws (13), the two grinding plates (20) reciprocate along the axial direction of the straightening roller (14) to guide and deburr the two sides of the metal coil. The squeezing assembly includes two side plates (24) fixedly mounted on both sides of the top of one end of the conveying base (1) and two squeezing rollers (25) that are vertically opposite to each other and rotatably mounted between the two side plates (24); each squeezing roller (25) has several water-absorbing pads (26) on its outer periphery, and the inner side of the water-absorbing pads (26) contacts the water-absorbing cotton (32) inside the roller through the mounting groove on the roller wall of the squeezing roller (25); each squeezing roller (25) is provided with a second reciprocating screw (27) and a second The reciprocating screw (27) is threaded to the second screw nut (29), the piston plate (30) is fixedly connected to the second screw nut (29), and the sealing plate (31) is located at one end of the absorbent cotton (32). The rotational power of the squeezing roller (25) is transmitted to the second reciprocating screw (27) through the gear transmission structure, so that the piston plate (30) reciprocates to compress the absorbent cotton (32). The sealing plate (31) is provided with a water outlet pipe (33) extending to the outside of the side plate (24) and having a one-way valve inside. The flushing machine (3) is fixedly installed on the top of the conveying base (1) and located between the correction and deburring assembly and the squeezing assembly.

2. The metal coil acid-free grinding and brushing rust removal equipment according to claim 1, characterized in that, A support frame (4) is fixedly installed on one side of the fixed frame (2), and a material roller (5) is rotatably installed on the support frame (4); a first gear (8) is rotatably installed on the outer side of one of the fixed plates (6) and fixedly connected to a brush roller (7), and a second gear (9) is rotatably installed on the outer side of the same fixed plate (6) and fixedly connected to another brush roller (7), and the first gear (8) and the second gear (9) mesh with each other; a first motor (10) is fixedly installed on the outer side of the other fixed plate (6), and the drive end of the first motor (10) is fixedly connected to one of the brush rollers (7).

3. The metal coil acid-free grinding and brushing rust removal equipment according to claim 1, characterized in that, Two first reciprocating screws (13) are coaxially fixed at both ends of the straightening roller (14); four support rods (16) are fixedly provided on the outer side of each first screw nut (15), and guide rods parallel to the first reciprocating screws (13) are fixedly provided on the inner side of the two fixing blocks (11). One support rod (16) on each first screw nut (15) is slidably connected to the corresponding guide rod to restrict the first screw nut (15) from rotating with the first reciprocating screw (13).

4. The metal coil acid-free grinding and brushing rust removal equipment according to claim 3, characterized in that, Each support rod (16) has a washer (17) fixedly installed at its end. A slide rod (18) slides through the washer (17) and the corresponding support rod (16). A pad (19) is fixedly installed at the end of the slide rod (18) near the straightening roller (14). Four pads (19) located at the same end of the straightening roller (14) are fixedly connected to a grinding plate (20). A spring (21) sleeved on the outside of the slide rod (18) is provided between each pad (19) and the corresponding washer (17). A first synchronous pulley (22) is fixedly installed at the end of one of the first reciprocating screws (13). Another first synchronous pulley (22) is fixedly installed on the outside of the second gear (9). The two first synchronous pulleys (22) are connected by a first synchronous belt (23).

5. The metal coil acid-free grinding and brushing rust removal equipment according to claim 1, characterized in that, Several absorbent pads (26) are spaced apart circumferentially along the squeezing roller (25) and extend axially; a second reciprocating screw (27) in each squeezing roller (25) is rotatably connected to the inner side of the corresponding side plate (24), and a guide rod (28) parallel to the second reciprocating screw (27) is fixedly provided on the inner side of the corresponding side plate (24), and the guide rod (28) slides through the piston plate (30); the outer periphery of the piston plate (30) slides with the inner wall of the squeezing roller (25).

6. The metal coil acid-free grinding and brushing rust removal equipment according to claim 5, characterized in that, The sealing plate (31) is fixedly installed inside the squeezing roller (25) and divides the roller space into a water absorption chamber and a transmission chamber. The absorbent cotton (32) is filled in the water absorption chamber between the sealing plate (31) and the piston plate (30). The water outlet pipe (33) is connected to the water absorption chamber. One end of the second reciprocating screw (27) rotates through the sealing plate (31) and extends into the transmission chamber.

7. The metal coil acid-free abrasive brush rust removal equipment according to claim 6, characterized in that, The gear transmission structure includes a third gear (34) fixedly installed at one end of the second reciprocating screw (27) extending into the transmission cavity, a fourth gear (35) rotatably connected to the inner side of the corresponding side plate (24), and a planetary gear ring (36) fixedly installed on the inner wall of the squeezing roller (25); the third gear (34) and the planetary gear ring (36) mesh with the fourth gear (35) respectively, and the third gear (34), the fourth gear (35) and the planetary gear ring (36) are all located on the side of the sealing plate (31) away from the absorbent cotton (32).

8. The metal coil non-acid-removing brush rust removal equipment according to claim 7, characterized in that, A second motor (37) is fixedly installed on the outer side of one of the side plates (24), and the drive end of the second motor (37) is fixedly connected to one of the squeezing rollers (25); a second synchronous wheel (38) is fixedly installed on the same end of the two squeezing rollers (25), and the two second synchronous wheels (38) are connected by a second synchronous belt (39) that is crossed and wound around, so that the two squeezing rollers (25) rotate in opposite directions.

9. The metal coil acid-free grinding and brushing rust removal equipment according to claim 4, characterized in that, The spiral direction and reversing position of the two first reciprocating screws (13) are symmetrically arranged so that the two grinding plates (20) move synchronously towards or away from each other; the two grinding plates (20) are both annular and are respectively slidably sleeved on the outer sides of the two ends of the straightening roller (14). There is a gap between the inner circumferential surface of the grinding plate (20) and the outer circumferential surface of the straightening roller (14). The opposite sides of the two grinding plates (20) respectively form grinding surfaces for contacting the side of the metal coil.

10. The metal coil non-acid-removing brush rust removal equipment according to claim 8, characterized in that, The absorbent cotton (32) is an elastic compressible absorbent sponge, and the absorbent pad (26) is an elastic permeable pad. The inner side of the absorbent pad (26) passes through the corresponding mounting groove and fits against the absorbent cotton (32). The outer periphery of the piston plate (30) is provided with a sealing ring that slides and seals with the inner wall of the squeezing roller (25).

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