Sheet metal shearing machine and using method thereof

Abstract

The invention relates to the field of metal processing and manufacturing, in particular to a metal sheet shearing machine and a using method thereof, and the metal sheet shearing machine comprises a blade, a supporting table, a cleaning mechanism, a rust removing mechanism and an anti-loosening mechanism. The using method of the metal sheet shearing machine comprises the following steps of S1, shearing, S2, rust removal, S3, cleaning and S4, looseness prevention. According to the device, by arranging the cleaning mechanism and the shear blades, cuttings generated when the device cuts a metal sheet are reduced, meanwhile, the cleaning mechanism can collect the cut metal cuttings, and therefore the device avoids the risk of scratching personnel and the sanitation problem caused by the fact that the metal cuttings are thrown out when the metal sheet is cut; during use, metal chippings can fall into a V-shaped groove between the blocking plate and the shearing base, then the blocking plate is opened in a sliding mode, and the cut metal plate chippings are sucked into the cleaning box through the vacuum degree.

Description

Technical Field

[0001] This invention relates to the field of metal processing and manufacturing, and in particular to a metal sheet shearing machine and its usage method. Background Technology

[0002] A metal sheet shearing machine is a mechanical device used for precise shearing of thin metal sheets. It separates the sheet material through the relative movement of upper and lower blades.

[0003] Existing devices of this type suffer from problems such as excessive and flying debris during cutting. For example, the floating cutting machine disclosed in Chinese Patent Publication No. CN103418827A uses a cutting blade to cut the workpiece. However, in actual use, due to the material of the sheet metal and the cutting direction, debris flies along the cutting direction. Furthermore, because the cutting blade is exposed, debris is thrown out along the cutting direction during use. This debris has high kinetic energy, easily causing cuts to the skin and eyes, and creating hygiene problems. Therefore, this application proposes a metal sheet shearing machine and its method of use. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a metal sheet shearing machine and its usage method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A metal sheet shearing machine includes a blade, a support table, a cleaning mechanism, a rust removal mechanism, and an anti-loosening mechanism. The cleaning mechanism is used to clean metal debris, the rust removal mechanism is used to remove rust from the blade, and the anti-loosening mechanism is used to prevent the blade from falling off. The cleaning mechanism is equipped with a first piston, and the rust removal mechanism is equipped with a second piston. The first piston is used to drive the rust removal mechanism, the second piston is used to drive the cleaning mechanism and the anti-loosening mechanism. The cleaning mechanism uses vacuum to suck up the iron filings generated when the blade is cutting. The rust removal mechanism uses compressed gas to reduce the difficulty of rust removal and remove rust from the blade. The anti-loosening mechanism uses compressed air to limit the blade. The upper part of the support platform is equipped with a shearing hydraulic cylinder, and a trigger rod is provided on one side of the blade. The support platform is equipped with a cleaning box and a compressed air tank. A blocking plate is provided below the blade. When the output rod of the shearing hydraulic cylinder is pressed down, the air in the cleaning box is extracted and the outside air is forced into the compressed air tank. When the cleaning mechanism is working, the No. 1 piston draws out the air in the cleaning box, and the trigger rod presses down to push the blockage plate open, so that the metal debris generated from cutting the thin metal sheet can be sucked into the cleaning box. The rust removal mechanism includes a support rod, a pressure spring, a sealing plate, and a rust removal plate. The rust removal plate also contains steel balls and a tension spring. A pressure valve is provided at the connection between the compressed air tank and the rust removal plate. When the rust removal mechanism is working, compressed air is intermittently ejected through the pressure valve, which drives the sealing plate to eject the steel balls. The impact force makes the rust easier to fall off. The blades then scrape off and collect the rust. The anti-loosening mechanism includes a rack box, a clamping plate, and a pneumatic box. The anti-loosening mechanism uses compressed air to change the direction of movement of the output rod of the pneumatic box through the mechanism inside the rack box, thereby providing a limit for the blade. At the same time, compressed air is used to assist in the collection of rust.

[0006] Preferably, a screw and nut are provided between the two shearing hydraulic cylinders, and the rust removal plate is pressured by a pressure spring.

[0007] Preferably, the steel ball and the tension spring move intermittently within the rust removal plate, and the support rod is provided with a swing shaft, which can swing within a certain angle.

[0008] Preferably, the rust-removing plate is in contact with one side of the outer surface of the blade, and a shearing seat is provided behind the blocking plate, the shearing seat being in contact with the blocking plate.

[0009] Preferably, the output rod of the air pressure box is provided with a pressure plate at its front end, and the pressure plate is provided with a rack.

[0010] Preferably, there are two racks, and a gear is provided between the racks.

[0011] Preferably, the blocking plate is further provided with a sliding sleeve.

[0012] A method of using a metal sheet shearing machine includes the following steps: S1: Shearing: The metal sheet is sheared by a shearing hydraulic cylinder, and at the same time, the downward action of the shearing hydraulic cylinder provides the required vacuum and compressed air to the rust removal mechanism and the cleaning mechanism. S2. Rust Removal: The pressure of compressed air is used to intermittently exhaust air from the bottom of the sealing plate, pushing it upwards. At the same time, steel balls are bounced against the inner wall of the rust removal plate, creating an impact force that makes the rust easier to remove. Meanwhile, the downward pressing action of the blade scrapes away the rust. S3. Cleaning: The negative pressure generated by the vacuum is used to collect the metal shavings cut off, and compressed air and a rust removal mechanism are used to collect the rust. S4. Anti-loosening: The blade is prevented from loosening by limiting the amount of compressed air in the air chamber.

[0013] The present invention has the following beneficial effects: 1. This application reduces the amount of chips produced when cutting thin metal sheets by incorporating a cleaning mechanism and shear blades. The cleaning mechanism also collects the cut metal chips, thus avoiding the risk of injury to personnel and hygiene issues caused by metal chips being thrown out during metal cutting. In use, the metal chips fall into the V-shaped groove between the blocking plate and the shear seat. Then, the blocking plate slides open, using vacuum to suck the cut metal chip into the cleaning box.

[0014] 2. By setting up a rust removal mechanism, when this device is in use, the rust on the surface of the blade can be hit by the steel balls in the rust removal plate, thereby generating an impact force, making it easier for the rust to fall off the surface of the blade. At the same time, the rust removal plate also has multiple teeth, which contact the blade. When the blade presses down to cut the thin metal plate, the teeth on the rust removal plate will scrape off the rust, and finally the compressed air will blow the rust into the filter box.

[0015] 3. By setting an anti-loosening mechanism, the device can additionally clamp the blade during use, thereby avoiding the problem of the screw on the blade becoming loose and causing it to be unusable. At the same time, in conjunction with the rust removal plate, when the blade is clamped, excess gas will enter the side of the rust removal plate near the pressure spring, thereby blowing away the collected rust. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a metal sheet shearing machine proposed in this invention; Figure 2 This is a schematic diagram of the back structure of a metal sheet shearing machine proposed in this invention; Figure 3 This is a schematic diagram of the blade mechanism of a metal sheet shearing machine proposed in this invention; Figure 4 This is a schematic diagram showing the position of the pressure plate in a metal sheet shearing machine according to the present invention. Figure 5 This is a schematic diagram of the internal structure of the rack box of a metal sheet shearing machine proposed in this invention; Figure 6 This is a schematic diagram showing the position of the blocking plate in a metal sheet shearing machine proposed in this invention; Figure 7 This is a schematic diagram showing the position of the pressure valve in a metal sheet shearing machine according to the present invention. Figure 8 for Figure 7 Enlarged view at point A; Figure 9 This is a schematic diagram showing the position of the filter box in a metal sheet shearing machine according to the present invention. Figure 10This is a schematic diagram of the support rod structure of a metal sheet shearing machine proposed in this invention; Figure 11 This is a schematic diagram of the internal structure of the rust-removing plate of a metal sheet shearing machine proposed in this invention.

[0017] In the diagram: 1. Crossbeam, 2. Shearing hydraulic cylinder, 3. Rack, 4. Screw, 5. Nut, 6. Piston No. 1, 7. Piston No. 2, 8. Support rod, 9. Platform, 10. Rack box, 11. Shearing seat, 12. Support platform, 13. Air pressure box, 14. Pressure spring, 15. Filter box, 16. Swing shaft, 17. Blade, 18. Blocking plate, 19. Pressure plate, 20. Clamping plate, 21. Return spring, 22. Compressed air tank, 23. Pressure valve, 24. Cleaning box, 25. Mounting plate, 26. Rust removal plate, 27. Steel ball, 28. Tension spring, 29. Flow valve, 30. Trigger rod, 31. Sealing plate, 32. Gear, 33. Sliding sleeve, 34. Guide rod. Detailed Implementation

[0018] 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. Example 1:

[0019] A metal sheet shearing machine includes a blade 17, a support table 12, a cleaning mechanism, a rust removal mechanism, and an anti-loosening mechanism. The cleaning mechanism is used to clean metal debris, the rust removal mechanism is used to remove rust from the blade 17, and the anti-loosening mechanism is used to prevent the blade 17 from falling off. The cleaning mechanism is equipped with a first piston 6, and the rust removal mechanism is equipped with a second piston 7.

[0020] The upper end of the support platform 12 is provided with a shearing hydraulic cylinder 2, and a screw 4 and a nut 5 are provided between the two shearing hydraulic cylinders 2. A trigger rod 30 is provided on one side of the blade 17. The support platform 12 is provided with a cleaning box 24 and a compressed air tank 22. A blocking plate 18 is provided below the blade 17. A sliding sleeve 33 is also provided on the blocking plate 18. A swing shaft 16 is provided in the support rod 8. The swing shaft 16 can swing within a certain angle. A shearing seat 11 is provided behind the blocking plate 18. The shearing seat 11 is in contact with the blocking plate 18. When the output rod of the shearing hydraulic cylinder 2 is pressed down, it draws out the air in the cleaning box 24 and compresses the outside air into the compressed air tank 22. When the cleaning mechanism is working, piston 6 draws out the air from the cleaning box 24, and trigger rod 30 presses down to push open the blocking plate 18, so that the cleaning box 24 can suck in the metal debris generated from cutting the thin metal sheet.

[0021] In this embodiment, the cleaning mechanism may specifically consist of the following components: a first piston 6, a cleaning box 24, a sliding sleeve 33, a return spring 21, a blocking plate 18, and a guide rod 34. The first piston 6 is fixedly connected to the side of the mounting plate 25. The first piston 6 draws out the air inside the cleaning box 24 and discharges it to the external space. The cleaning box 24 is fixedly connected inside the support platform 12 and connected to the first piston 6. The sliding sleeve 33 is provided with a return spring 21 and a guide rod 34. The sliding sleeve 33 itself consists of two telescopic sleeves that are slidably connected together. The inside of the cleaning box 24 is also connected to the external space, and the connection point is located below the blocking plate 18. The return spring 21 is set on the guide rod 34. The blocking plate 18 is slidably connected to the guide rod 34, and the blocking plate 18 is also slidably limited connected to the platform 9.

[0022] The cleaning mechanism uses the downward pressing action of the shearing hydraulic cylinder 2 to provide a vacuum for the cleaning box 24. When the shearing hydraulic cylinder 2 is pressed down, the air inlet of the first piston 6 will draw the air out of the cleaning box 24 and discharge it through its air outlet. At this time, since the inside of the cleaning box 24 is a vacuum, when its air inlet is opened, the cleaning box 24 can draw air from the outside space, thereby drawing the metal chips generated during cutting into the cleaning box 24.

[0023] When this device cuts thin metal sheets, the shearing hydraulic cylinder 2 presses the mounting plate 25 downward. Since the blade 17 is connected to the mounting plate 25 via a screw, and the crossbeam 1 is limited on the screw 4 by the nut 5, when the output rod of the shearing hydraulic cylinder 2 is pressed down, the output rods of piston 6 and piston 7 can also be pressed down. At the same time, since the mounting plate 25 is connected to the blade 17 via a screw, when the output rod of the shearing hydraulic cylinder 2 is pressed down, the blade 17 will also be pressed down, thus enabling the blade 17 to shear the thin metal sheet.

[0024] The metal sheet is positioned below the blade 17 and the shearing seat 11 during shearing, see reference. Figure 3 When the metal sheet is sheared, it will produce debris. Compared with the cutting method of the cutting blade, the metal sheet is cut by the shearing hydraulic cylinder 2 without throwing out metal debris. After the metal sheet is cut, the metal debris will fall into the contact area between the shearing seat 11 and the blocking plate 18 under the action of gravity. The contact area is located directly below the sheared part of the metal sheet and is V-shaped. Therefore, the debris will fall to the bottom along the inner side of the V-shape. At this time, the blocking plate 18 will block the air inlet of the cleaning box 24.

[0025] refer to Figure 3The blocking plate 18 has an inclined conical surface near one side. There is a trigger rod 30 above the blocking plate 18, which is fixedly connected to the mounting plate 25. When the mounting plate 25 is pressed down by the shearing hydraulic cylinder 2, the trigger rod 30 will also be pressed down. At this time, the lower end of the trigger rod 30 will contact the blocking plate 18 and push it backward using the conical surface, so that the air inlet of the cleaning box 24 below the blocking plate 18 is exposed. Since the part between the blocking plate 18 and the shear seat 11 is V-shaped, when the metal chips generated by cutting fall into the part between the blocking plate 18 and the shear seat 11, they will accumulate at the bottom. When the blocking plate 18 is pushed open, the chips will be sucked into the cleaning box 24, thereby cleaning the metal chips. Example 2:

[0026] Piston 6 is used to drive the rust removal mechanism, piston 7 is used to drive the cleaning mechanism and the anti-loosening mechanism. The cleaning mechanism uses vacuum to suck up the iron filings generated when the blade 17 is cutting. The rust removal mechanism uses compressed gas to reduce the difficulty of rust removal and remove rust from the blade 17. The anti-loosening mechanism uses compressed air to limit the blade 17.

[0027] The rust removal mechanism includes a support rod 8, a pressure spring 14, a sealing plate 31, and a rust removal plate 26. The rust removal plate 26 is in contact with one outer surface of the blade 17. The pressure spring 14 provides pressure to the rust removal plate 26. The rust removal plate 26 also contains steel balls 27 and tension springs 28, which move intermittently within the rust removal plate 26. A pressure valve 23 is provided at the connection between the compressed air tank 22 and the rust removal plate 26. When the rust removal mechanism is working, compressed air is intermittently ejected through the pressure valve 23, driving the sealing plate 31 to eject the steel balls 27. The impact force makes it easier for the rust to fall off. The blade 17 then scrapes off and collects the rust.

[0028] In this embodiment, the rust removal mechanism may specifically consist of the following components: piston 7, compressed air tank 22, pressure spring 14, swing shaft 16, support rod 8, rust removal plate 26, tension spring 28, steel ball 27, filter box 15, and sealing plate 31. Among them, piston 7 is connected to compressed air tank 22. During the downward pressing of piston 7, outside air is forced into compressed air tank 22. Compressed air tank 22 is fixedly connected to the support platform 12. Pressure spring 14 is located between rust removal plate 26 and support rod 8. Swing shaft 16 is located in pressure spring 14 and fixedly connected to rust removal plate 26. It is also located in support rod 8. There is a gap at the connection between the two to facilitate the shaking of rust removal plate 26. Support rod 8 is fixedly connected to platform 9. Rust removal plate 26 is in contact with blade 17. Tension spring 28 is located in rust removal plate 26 and fixedly connected to rust removal plate 26 and sealing plate 31. Sealing plate 31 is located in rust removal plate 26 and is slidably sealed to it. Steel ball 27 is located above sealing plate 31. Filter box 15 is located at the end of rust removal plate 26 away from support rod 8.

[0029] When the rust removal mechanism is working, the second piston 7 uses the downward action of the mounting plate 25 to draw in outside air from the air inlet and compress the outside air into the compressed air tank 22. The compressed air tank 22 is connected to a pressure valve 23, which is connected to one side of the rust removal plate 26 through a pipe. When the pressure inside the compressed air tank 22 is greater than a certain value, the gas inside the compressed air tank 22 can be ejected from the inside of the compressed air tank 22. Since the pressure valve 23 is connected to the inside of the rust removal plate 26, that is, connected at the position below the sealing plate 31.

[0030] Therefore, when air is ejected from the pressure valve 23, it will push the sealing plate 31 upward. Under the action of the flow valve 29, some gas will be discharged. Under the action of the tension spring, the sealing plate 31 overcomes the force of the tension spring 28 below it and bounces the steel ball 27 toward the inner wall of the rust removal plate 26. After the sealing plate 31 is hit, it will generate a certain impact force. This impact force will act on the surface of the blade 17. The impact force will loosen the rust and make it easier to fall off.

[0031] refer to Figure 11 The rust-removing plate 26 has densely distributed teeth that fit against the outer surface of one side of the blade 17. The pressure on this outer surface when in contact with the thin metal sheet is relatively low, resulting in limited friction. This means that while this surface comes into contact with the cut metal sheet, the limited friction makes it prone to rust accumulation. The teeth on the rust-removing plate 26 can scrape away rust from the blade 17 by utilizing the stress concentration formed at the tooth tips. The scraped-off rust is located at the bottom of the teeth because the rust-removing plate 26 is angled and closely fitted to the cutting edge.

[0032] When the rust-removing plate 26 is in close contact with the cutting edge, a conduit-like structure is formed between the teeth of the rust-removing plate 26 and the blade 17, meaning the top of the teeth on the rust-removing plate 26 is blocked by the blade 17. When the anti-loosening mechanism clamps the blade, the flow valve inside the air pressure box 13 opens, blowing some air between the teeth of the rust-removing plate 26, thus blowing the rust into the filter box 15. The filter box 15 is located at the end of the rust-removing plate 26 away from the pressure spring 14. Its structure is a rectangular metal frame open to the outside, with a filter screen fixedly connected inside for filtering rust. When the rust is located on the teeth of the rust-removing plate 26, the rust does not contact the blade 17, thus preventing wear on the blade 17 when it comes into contact with the rust-removing plate 26. Example 3:

[0033] The anti-loosening mechanism includes a rack box 10, a clamping plate 20, and a pneumatic box 13. The front end of the output rod of the pneumatic box 13 is provided with a pressure plate 19, and the pressure plate 19 is provided with racks 3. There are two racks 3, and a gear 32 is provided between the racks 3. The anti-loosening mechanism uses compressed air and the mechanism inside the rack box 10 to change the movement direction of the output rod of the pneumatic box 13, thereby providing a limit for the blade 17. At the same time, compressed air is used to assist in the collection of rust.

[0034] In this embodiment, the anti-loosening mechanism can be specifically composed of the following components: rack box 10, air pressure box 13, pressure plate 19, rack 3, and gear 32. The gear 32 is rotatably connected inside the rack box 10. There are two racks 3 and two pressure plates 19. The racks 3 are fixedly connected to the pressure plates 19. One pressure plate 19 is fixedly connected to the output rod of the air pressure box 13, and the other pressure plate 19 is slidably connected to the mounting plate 25 and fits against the blade 17. The lower end of the pressure plate 19 that fits against the blade 17 has a protrusion that matches the groove on the blade 17. The gear 32 is located between the two racks.

[0035] Compressed gas in compressed air tank 22 enters air pressure box 13 through a pipe. Air pressure box 13 has a structure similar to a cylinder. When gas enters air pressure box 13, its output rod can extend. A pressure plate 19 on the output rod is fixedly connected to one of the racks 3, while the other pressure plate 19 is slidably connected to mounting plate 25. This pressure plate 19 is also fixedly connected to a rack 3. A gear 32 rotatably connects the two racks 3. When the output rod of air pressure box 13 extends, the extension motion is transmitted to the other pressure plate 19 due to the gear 32. At this time, the movement of the pressure plate 19 is opposite to the previous movement, pressing the blade 17 onto mounting plate 25. Simultaneously, a rectangular protrusion is located on the lower side of the pressure plate 19. Figure 5 The protrusion can match the groove on the blade 17.

[0036] The air pressure box 13 is equipped with a one-way valve at the air inlet to prevent gas backflow, and a flow valve at the air outlet to control the amount of gas discharged. The discharged gas will enter the rust removal mechanism to assist in the collection of rust.

[0037] A method for using a sheet metal shearing machine includes the following steps: S1. Shearing: The shearing hydraulic cylinder 2 shears the thin metal sheet, and at the same time, the downward action of the shearing hydraulic cylinder 2 provides the required vacuum and compressed air to the rust removal mechanism and the cleaning mechanism.

[0038] S2. Rust Removal: The pressure of compressed air is used to intermittently exhaust air from the bottom of the sealing plate 31, pushing it upwards. At the same time, the steel ball 27 is bounced towards the inner wall of the rust removal plate 26, causing it to impact the rust removal plate 26, thus making the rust easier to fall off. Meanwhile, the downward pressing action of the blade 17 is used to scrape off the rust.

[0039] S3. Cleaning: The negative pressure generated by the vacuum is used to collect the metal debris cut off, and compressed air and a rust removal mechanism are used to collect the rust.

[0040] S4. Anti-loosening: The blade 17 is prevented from loosening by limiting the amount of compressed air in the air pressure box 13.

[0041] 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 metal sheet shearing machine, comprising blades, a support table, a cleaning mechanism, a rust removal mechanism, and an anti-loosening mechanism, characterized in that, The cleaning mechanism is used for cleaning metal shavings, the rust removal mechanism is used for removing rust from the blade, the anti-loosening mechanism is used for preventing the blade from falling off, the cleaning mechanism is equipped with a first piston, and the rust removal mechanism is equipped with a second piston; The first piston is used to drive the rust removal mechanism, the second piston is used to drive the cleaning mechanism and the anti-loosening mechanism. The cleaning mechanism uses vacuum to suck up the iron filings generated when the blade is cutting. The rust removal mechanism uses compressed gas to reduce the difficulty of rust removal and remove rust from the blade. The anti-loosening mechanism uses compressed air to limit the blade. The upper part of the support platform is equipped with a shearing hydraulic cylinder, and a trigger rod is provided on one side of the blade. The support platform is equipped with a cleaning box and a compressed air tank. A blocking plate is provided below the blade. When the output rod of the shearing hydraulic cylinder is pressed down, the air in the cleaning box is extracted and the outside air is forced into the compressed air tank. When the cleaning mechanism is working, the No. 1 piston draws out the air in the cleaning box, and the trigger rod presses down to push the blockage plate open, so that the metal debris generated from cutting the thin metal sheet can be sucked into the cleaning box. The rust removal mechanism includes a support rod, a pressure spring, a sealing plate, and a rust removal plate. The rust removal plate also contains steel balls and a tension spring. A pressure valve is provided at the connection between the compressed air tank and the rust removal plate. When the rust removal mechanism is working, compressed air is intermittently ejected through the pressure valve, which drives the sealing plate to eject the steel balls. The impact force makes the rust easier to fall off. The blades then scrape off and collect the rust. The anti-loosening mechanism includes a rack box, a clamping plate, and a pneumatic box. The anti-loosening mechanism uses compressed air to change the direction of movement of the output rod of the pneumatic box through the mechanism inside the rack box, thereby providing a limit for the blade. At the same time, compressed air is used to assist in the collection of rust.

2. A metal sheet shearing machine according to claim 1, characterized in that, A screw and nut are provided between the two shearing hydraulic cylinders, and the rust removal plate is pressured by a pressure spring.

3. A metal sheet shearing machine according to claim 1, characterized in that, The steel ball and the tension spring move intermittently within the rust removal plate, and the support rod is provided with a swing shaft, which can swing within a certain angle.

4. A metal sheet shearing machine according to claim 1, characterized in that, The rust-removing plate is attached to one side of the outer surface of the blade, and a shearing seat is provided behind the blocking plate, which is attached to the blocking plate.

5. A metal sheet shearing machine according to claim 1, characterized in that, The output rod of the air pressure box is provided with a pressure plate at its front end, and the pressure plate is provided with a rack.

6. A metal sheet shearing machine according to claim 1, characterized in that, The racks are of two sizes, and a gear is provided between the racks.

7. A metal sheet shearing machine according to claim 1, characterized in that, The blocking plate is also equipped with a sliding sleeve.

8. The method of using a metal sheet shearing machine as described in any one of claims 1-7, characterized in that, The steps include the following: S1: Shearing: The metal sheet is sheared by the shearing hydraulic cylinder, and the downward action of the shearing hydraulic cylinder provides the required vacuum and compressed air to the rust removal mechanism and the cleaning mechanism. S2. Rust Removal: The pressure of compressed air is used to intermittently exhaust air from the bottom of the sealing plate, pushing it upwards. At the same time, steel balls are bounced against the inner wall of the rust removal plate, creating an impact force that makes the rust easier to remove. Meanwhile, the downward pressing action of the blade scrapes away the rust. S3. Cleaning: The negative pressure generated by the vacuum is used to collect the metal shavings cut off, and compressed air and a rust removal mechanism are used to collect the rust. S4. Anti-loosening: The blade is prevented from loosening by limiting the amount of compressed air in the air chamber.

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