Copper and copper alloy strip edge watermark removing device

Abstract

The invention discloses a copper and copper alloy strip edge watermark removing device, and relates to the technical field of copper strip production, the copper and copper alloy strip edge watermark removing device comprises a copper strip body and a fixing plate, the side, away from the copper strip body, of the fixing plate is fixedly connected with a programmable controller, and the side, away from the fixing plate, of the programmable controller is provided with an air compression device; a nozzle is fixedly connected to an opening of the air compression device and used for blowing compressed air to the edge of the copper strip body at a certain angle and speed. The device has the main advantages that through the stepping motor, the moving body, the air compression device and the nozzle, water stains on the edge of the strip can be removed through compressed air, and the compressed air can quickly blow away the water stains on the edge of the strip through high-speed airflow and certain pressure of the compressed air. Therefore, the drying time in the production process can be remarkably shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of copper strip production, and in particular to a device for removing watermarks from the edges of copper and copper alloy strips. Background Art

[0002] Copper and copper alloy strips are an important form of copper materials. They have excellent physical and chemical properties and are widely used in many fields. The passivation of copper and copper alloy strips is an important surface treatment technology aimed at improving the corrosion resistance and oxidation resistance of materials. When copper and copper alloy strips are in contact with the atmosphere, water, acid and alkali and other media, chemical reactions may occur on their surfaces to form a dense oxide film, which is called passivation. This oxide film can prevent the metal from directly contacting the corrosive medium, thereby playing an anti-corrosion role.

[0003] In the existing copper strip edge watermark removal process, when the strip thickness is greater than 1.0 mm, there will be some water marks on the edge of the passivated copper strip when it is squeezed by the squeeze roller. If it is not removed in time, after being dried in an oven, the edge of the strip will produce dot-shaped and strip-shaped gray-white passivation marks, which will have a great impact on product quality. When this problem is solved by replacing the squeeze roller, the water marks on the edge of the strip produced by the squeeze roller under normal conditions, the passivation liquid sprayed on the upper and lower surfaces of the strip is squeezed by the squeeze roller, and more passivation liquid accumulates between the two rollers for a long time because there is no strip at both ends of the roller. On the one hand, it is constantly taken away by the edge strip, and on the other hand, it constantly flows from the roller surface. The water on the edge of the strip cannot be cleaned in time, and watermarks will still appear on the edge of the strip.

[0004] In order to solve the problem of some water marks on the edge of the copper strip when it is squeezed by the squeezing roller in the above solution, nozzles connected to an air compression device are installed on both sides of the squeezing roller outlet at the rear end of the passivation, and the air compression device is fixed on a freely movable moving body. The moving body is controlled by the movement of a stepper motor and a driver, and the movement is automatic. It can automatically find the edge according to the width of the copper strip body produced. The automatic edge finding process is completed by an automatic control device, so that the water marks formed on the edge of the strip can be blown away in real time.

[0005] However, in the process of removing water marks, since the compressed air for cleaning and drying may contain pollutants such as dust and microorganisms, the dust and microorganisms may adhere to the surface of the copper strip, affecting its surface quality, and even causing pitting, bubble pinholes and other phenomena on the surface of the copper strip, affecting its appearance and performance. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a device for removing watermarks from the edges of copper and copper alloy strips, which solves the problem of partial water marks on the edges of copper strips during production.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A device for removing watermarks from the edge of copper and copper alloy strips comprises a copper strip body and a fixed plate, wherein a programmable controller is fixedly connected to the side of the fixed plate away from the copper strip body, an air compressor is arranged on the side of the programmable controller away from the fixed plate, and a nozzle is fixedly connected to the opening of the air compressor, and the nozzle is used to blow compressed air to the edge of the copper strip body at a certain angle and speed, so that the water marks formed on the edge of the strip can be blown away in real time.

[0008] As a further improvement of the present invention, two fixing plates are provided, and the two fixing plates are symmetrically arranged on the upper and lower sides of the copper strip body, and four programmable controllers are provided, and the four programmable controllers are symmetrically fixedly connected to the surfaces of the two fixing plates in pairs, thereby limiting the position of the air compression device.

[0009] As a further improvement of the present invention, the two programmable controllers fixedly connected to the same fixed plate surface are symmetrically fixedly connected to a driver at one end away from each other, the driver is fixedly connected to a stepper motor at one side away from the programmable controller, and the programmable controller is slidably connected to a moving body at one side away from the fixed plate. Thus, the movement of the air compression device can be controlled by the stepper motor and the driver.

[0010] As a further improvement of the present invention, the air compression devices are provided with four, and the four air compression devices are respectively fixedly connected to the side of the moving body away from the programmable controller, and the upper and lower air compression devices are symmetrical along the copper strip body, and the air compression devices are symmetrically provided with fitting grooves on the side close to each other in the vertical direction, and the upper and lower fitting grooves can fit each other. Thus, it can prevent the air compression device from being blocked when installed.

[0011] As a further improvement of the present invention, a filter frame is provided outside the nozzle, a filter opening is provided at one end of the filter frame away from the air compression device, a threaded ring is fixedly connected to the side of the filter frame close to the air compression device, a threaded groove is provided at the outside of the air compression device, and the threaded ring is threadedly connected to the nozzle. Thus, dust in the compressed air can be filtered and water marks can be dispersed and dried better.

[0012] As a further improvement of the present invention, four screw holes are provided at both ends of the two fixing plates, connecting rods are provided at both ends of the fixing plates on the side close to each other, and through rods are provided on the side close to each other of the connecting rods provided on the same fixing plate, and water-wiping cotton is slidably connected to the outside of the through rods. Thus, the water-wiping cotton can be quickly replaced.

[0013] As a further improvement of the present invention, both ends of the through rod are provided with cross grooves, the side of the connecting rod close to the through rod is fixedly connected with a cross block, the cross blocks are respectively engaged with the cross grooves, and the ends of the two connecting rods on one side that are away from each other are fixedly connected with a resistance block, and the fixed plate is provided with a sliding groove at the resistance block. Thus, the dirty water stain wiping cotton can be quickly removed.

[0014] As a further improvement of the present invention, the said resistance block slides inside the sliding groove, the said resistance block and the inner wall of the sliding groove are fixedly connected with a spring, the middle of the said spring is provided with a telescopic rod, the two ends of the said telescopic rod are respectively fixedly connected to the side where the resistance block and the inner wall of the sliding groove are close to each other, and the two ends of the said fixing plate away from the programmable controller are symmetrically fixedly connected with two right-angle fixing blocks. Thus, the water mark wiping cotton can be automatically rebounded to fix it.

[0015] As a further improvement of the present invention, the filter opening is in an inclined state, and the filter frame is provided with two upper and lower flat-topped cones near the filter opening, so that the compressed air can be gathered first and then diffused after entering the filter frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the stepper motor, moving body, air compression device and nozzle, the moving body is driven to move by the start of the stepper motor. Since the air compression device is fixed on the surface of the moving body, it is composed of two programmable controllers and four stepper motors and their drivers. The strip width is extracted in the production line automation system and the PACADVANCE controller is programmed to complete the positioning of the strip edge. Then the compressed air is sucked in and ejected from the nozzle through the air compression device, thereby achieving the effect of removing water marks on the strip edge through compressed air. With its high-speed airflow and certain pressure, compressed air can quickly blow away the water marks on the strip edge. This can significantly shorten the drying time in the production process and improve production efficiency. The removal of water marks is crucial to ensuring product quality and consistency. Removing water marks with compressed air can ensure the dryness and cleanliness of the strip surface, thereby improving the overall quality and consistency of the product.

[0017] 2. Before removing the water marks on the edge of the copper strip, wipe the surface of the copper strip with the water mark wiping cotton, so as to achieve the effect of adsorbing the water marks before removing the water marks with compressed air. Through the adsorption operation before the water marks are blown dry, this method can not only remove most of the water marks on the edge of the strip, but also reduce the burden of subsequent compressed air to remove water marks. It can also allow compressed air to focus more on removing residual water marks and tiny water droplets that are difficult to remove, thereby improving the overall removal efficiency. The early adsorption treatment can more thoroughly remove the water marks on the edge of the strip, and also avoid the influence of residual water marks on the quality and performance of the strip. This helps to improve the overall quality of the product and ensure that the product meets relevant standards and customer requirements.

[0018] 3. Through the connecting rod, water-trace wiping cotton, through rod, cross slot and cross block, the connecting rod is manually pulled to make the cross block and the cross slot move away. At this time, the water-trace wiping cotton and the through rod will fall directly. Then, by pulling the through rod out of the water-trace wiping cotton and replacing it with a new water-trace wiping cotton, this operation can not only achieve the rapid disassembly of the water-trace wiping cotton, but also reduce the consumption of consumables through the separation of the through rod and the water-trace wiping cotton. In addition, by only replacing the water-trace wiping cotton, the water-trace wiping cotton can be replaced alone instead of the entire wiping device, thereby significantly reducing long-term operating costs. Rapid disassembly and replacement of the water-trace wiping cotton can ensure that when the sponge is seriously contaminated during the production process, it can be quickly replaced with a new water-trace wiping cotton. This avoids the poor cleaning effect caused by the water-trace wiping cotton being too wet or too dirty, thereby improving the overall production cleaning efficiency. The design of rapid disassembly and replacement makes the replacement process of the water-trace wiping cotton simple and quick, without the need for additional tools or complicated operations, thereby reducing the workload of maintenance personnel and reducing maintenance time and costs.

[0019] 4. Through the filter frame, filter orifice, threaded ring and threaded groove, since the filter frame is sleeved on the outside of the nozzle, the compressed air will be transmitted to the nozzle through the air compression device, and then enter the filter frame from the nozzle, and the compressed air will be ejected from the filter orifice by the trumpet shape that first gathers and then diffuses, which fits up and down in the filter frame. The compressed air is first effectively gathered through the trumpet-shaped gathering structure, thereby enhancing the strength and pressure of the airflow, and then the airflow is evenly dispersed to a larger area through the trumpet-shaped diffusion. Since the airflow is effectively gathered and dispersed, energy waste is reduced. Compared with the airflow that has not been gathered and diffused in the prior art, this design can achieve the same drying effect with lower energy consumption. Impurities and dust in the compressed air can also be filtered when passing through the filter orifice, so that the compressed air for air drying the copper strip body after filtration is purer, and the airflow does not contain impurities and dust, and can more efficiently remove water marks on the edge of the copper strip body. The pure airflow can more effectively penetrate the water film and quickly blow away the water marks, thereby improving the efficiency of water mark removal. Moreover, the filtered compressed air will not release additional dust or impurities during the process of removing water marks, which helps to maintain the cleanliness of the production environment. By diffusing the compressed air, the airflow can cover a wider area around the edge of the copper strip. As a result, more water marks can be blown by the airflow at the same time, thereby accelerating the removal process of water marks.

[0020] 5. Through the filter frame, threaded ring and threaded groove, due to the threaded connection between the threaded ring and the threaded groove, after the filter frame has been used for a period of time, the dust and impurities accumulated inside the filter frame need to be cleaned. Through the threaded connection between the threaded ring and the threaded groove, the filter frame can be quickly replaced. Quick replacement of the filter frame means that during the production process, when the filter frame reaches the replacement standard or fails, the replacement work can be completed quickly and the normal operation of the production line can be restored. This avoids production interruptions caused by filter frame problems, thereby improving overall production efficiency. In addition, quick replacement of the filter frame can reduce the workload and time of maintenance personnel, thereby reducing maintenance costs. At the same time, since the replacement process is simpler, it also reduces the risk of equipment damage caused by improper operation, further reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 The diagram is a schematic diagram of the structure of the programmable controller, stepper motor and driver in the present invention.

[0023] Figure 3 It is a schematic structural diagram of the moving body, the air compressing device and the filter frame in the present invention.

[0024] Figure 4It is a schematic diagram of the structure of the threaded ring, the nozzle and the threaded groove in the present invention.

[0025] Figure 5 It is a schematic diagram of the structure of the fixing plate, the connecting rod and the water-stain wiping cotton in the present invention.

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the water mark wiping cotton in the present invention.

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the screw hole in the present invention.

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point A in the middle.

[0029] Fig. 9 It is a schematic diagram of the structure of the connecting rod, the abutment block and the cross block in the present invention.

[0030] Fig.10 A schematic diagram of the cross-sectional structure of the filter frame in the present invention.

[0031] In the figure: 100, copper strip body; 201, programmable controller; 202, stepping motor; 203, driver; 204, moving body; 205, air compression device; 206, fitting groove; 207, filter frame; 208, filter orifice; 209, threaded ring; 210, nozzle; 211, threaded groove; 301, fixing plate; 302, screw hole; 303, connecting rod; 304, water mark wiping cotton; 305, through rod; 306, cross groove; 307, spring; 308, telescopic rod; 309, resistance block; 310, cross block; 311, right-angle fixing block; 312, sliding groove. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0034] like Figure 1-10 As shown, the present invention provides a device for removing watermarks from the edge of copper and copper alloy strips, comprising a copper strip body 100 and a fixed plate 301, a programmable controller 201 is fixedly connected to the side of the fixed plate 301 away from the copper strip body 100, an air compression device 205 is arranged on the side of the programmable controller 201 away from the fixed plate 301, a nozzle 210 is fixedly connected to the opening of the air compression device 205, and the nozzle 210 is used to blow compressed air to the edge of the copper strip body 100 at a certain angle and speed, two fixed plates 301 are arranged, and the two fixed plates 301 are symmetrically arranged on the upper and lower sides of the copper strip body 100, four programmable controllers 201 are arranged, and the four programmable controllers 201 are symmetrically fixedly connected to the surfaces of the two fixed plates 301 in pairs, and the ends of the two programmable controllers 201 fixedly connected to the surface of the same fixed plate 301 away from each other are symmetrically fixedly connected to the drivers 203, and the side of the drivers 203 away from the programmable controllers 201 is fixedly connected to the stepping motor 202, and the programmable controller The side of the device 201 away from the fixed plate 301 is slidably connected to the moving body 204, and four air compression devices 205 are provided. The four air compression devices 205 are respectively fixedly connected to the side of the moving body 204 away from the programmable controller 201. The upper and lower air compression devices 205 are symmetrical to each other along the copper strip body 100. The air compression devices 205 in the vertical direction are symmetrically provided with fitting grooves 206 on one side close to each other. The upper and lower fitting grooves 206 can fit each other. The outside of the nozzle 210 is provided with The filter frame 207, the filter frame 207 at one end away from the air compressor 205 is provided with a filter opening 208, the filter frame 207 is fixedly connected with a threaded ring 209 on one side close to the air compressor 205, the air compressor 205 is provided with a threaded groove 211 at the outside of the nozzle 210, the threaded ring 209 is threadedly connected with the nozzle 210, the opening state of the filter opening 208 is an inclined state, and the filter frame 207 is provided with two upper and lower flat-topped cones near the filter opening 208. In this way, the programmable controller 201, the stepper motor 202 and the driver 203 can be used to complete the automatic edge search effect of the copper strip body 100, and then the air can be compressed by the air compressor 205, and the air can be ejected through the nozzle 210, so that the water marks on the edge of the copper strip body 100 can be removed. The nozzle 210 is set by the filter frame 207. Thereby, dust in the air will be filtered out by the filter opening 208, and the compressed air can be diffused. Also, through the threaded connection of the threaded ring 209 and the threaded groove 211, the filter frame 207 used for a period of time can be quickly replaced, so as to facilitate the cleaning or replacement of the filter frame 207.

[0035] like Figure 5-9As shown, four screw holes 302 are provided at both ends of the two fixing plates 301, and connecting rods 303 are provided at both ends of the fixing plates 301 on the side close to each other. A through rod 305 is provided on the side close to each other of the connecting rods 303 provided on the same fixing plate 301, and a water-stain wiping cotton 304 is slidably connected to the outside of the through rod 305. A cross groove 306 is provided at both ends of the through rod 305, and a cross block 310 is fixedly connected to the side of the connecting rod 303 close to the through rod 305. The cross block 310 is respectively engaged with the cross groove 306, and the two connecting rods 303 on one side are connected. The ends away from each other are fixedly connected with a resistance block 309, and the fixed plate 301 is provided with a sliding groove 312 at the resistance block 309. The resistance block 309 slides inside the sliding groove 312, and a spring 307 is fixedly connected between the resistance block 309 and the inner wall of the sliding groove 312. The middle part of the spring 307 is provided with a telescopic rod 308, and the two ends of the telescopic rod 308 are respectively fixedly connected to the side where the resistance block 309 and the inner wall of the sliding groove 312 are close to each other. The two ends of the fixed plate 301 away from the programmable controller 201 are symmetrically fixedly connected with two right-angle fixed blocks 311. In this way, in the process of manufacturing and moving the copper strip body 100, the water marks on the surface of the copper strip body 100 can be simply wiped before removing the water marks. Through the adsorption treatment of the water mark wiping cotton 304, most of the water marks on the edge of the strip can be removed in advance, thereby reducing the burden of subsequent compressed air to remove the water marks. Moreover, due to the clamping connection between the cross groove 306 and the cross block 310, the dirty or damaged water-stain wiping cotton 304 can be quickly removed by the user's pulling, so as to facilitate the replacement of the water-stain wiping cotton 304, thereby quickly completing the replacement work and restoring the normal operation of the production line.

[0036] The effect achieved by the whole device is as follows: first, the copper strip body 100 is transported through the production line. During the transportation process, when the copper strip body 100 is squeezed by the squeezing roller, some water marks will remain on the edge. At this time, after continued transportation on the production line, the copper strip body 100 will pass between two water mark wiping cottons 304. Since the distance between the water mark wiping cottons 304 is less than the thickness of the copper strip body 100, the water mark wiping cottons 304 will simply adsorb the water marks stained on the edge of the copper strip body 100 when passing through. Through the adsorption process, most of the water marks on the edge of the copper strip body 100 can be removed in advance, thereby reducing the burden of the subsequent compressed air to remove the water marks. In this way, the compressed air can focus more on removing the residual water marks and tiny water droplets that are difficult to remove, thereby improving the overall removal efficiency.

[0037] Then, the strip width is extracted in the production line automation system and the PACADVANCE controller is programmed to complete the positioning of the strip edge. After the positioning is completed, the stepper motor 202 and the driver 203 control the air compressor 205 to move along the edge of the copper strip body 100, and then the air compressor 205 compresses the air and sprays the compressed air from the nozzle 210, thereby achieving the effect of removing the water marks on the strip edge by compressed air. The compressed air can quickly blow away the water marks on the strip edge with its high-speed airflow and certain pressure. Due to the filter frame 207 set outside the nozzle 210, the compressed air will enter the filter frame 207, and then the two flat-topped cones in the filter frame 207 that fit up and down will gather the compressed air first and then diffuse it, and finally the compressed air will be sprayed from the filter opening 208 opened by the filter frame 207, so that the compressed air can be diffused, so that its airflow can cover a wider area of ​​the edge of the copper strip body 100, and the same drying effect can be achieved with lower energy consumption. Impurities in the compressed air can also be filtered through the filter opening 208. The filtered compressed air is purer, and the airflow does not contain impurities and dust, so water marks on the edge of the copper strip body 100 can be removed more efficiently.

[0038] When the filter frame 207 has been used for a certain period of time or is damaged, the dust and impurities will block the filter opening 208, which will affect the filtering effect of the filter frame 207. At this time, the filter frame 207 needs to be replaced. The threaded connection between the threaded ring 209 and the threaded groove 211 fixed by the filter frame 207 can quickly disassemble the filter frame 207 and then quickly clean or replace it. Quick replacement of the filter frame 207 means that during the production process, when the filter frame 207 reaches the replacement standard or is damaged, the replacement work can be completed quickly to restore the normal operation of the production line.

[0039] When the water-stain wiping cotton 304 is too dirty or saturated with water inside, it is necessary to replace the water-stain wiping cotton 304. The operator pulls the connecting rod 303 to separate the cross block 310 and the cross groove 306 to which the connecting rod 303 is fixed. At this time, the resistance block 309 fixedly connected to the top of the connecting rod 303 will squeeze the spring 307, causing the spring 307 to undergo elastic deformation. When the cross block 310 and the cross groove 306 are separated, the water-stain wiping cotton 304 and the through rod 305 are manually pulled away from the cross block 310 at the other end. 10, so as to achieve the effect of quickly removing the water-stain wiping cotton 304, then take out a new water-stain wiping cotton 304, pull out the through rod 305 from the old water-stain wiping cotton 304 and insert it into the new water-stain wiping cotton 304, then align the cross slot 306 with the cross block 310 and reinsert it, at this time, release the connecting rod 303, so that the spring 307 rebounds, so that the cross block 310 fixed at the end of the spring 307 is inserted into the cross slot 306 again, so that when the sponge is seriously contaminated, it can be quickly replaced with a new water-stain wiping cotton 304. This avoids the poor cleaning effect caused by the water-stain wiping cotton 304 being too wet or too dirty, thereby improving the overall production cleaning efficiency.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for removing watermarks from the edge of a copper or copper alloy strip, comprising a copper strip body (100) and a fixing plate (301), characterized in that: A programmable controller (201) is fixedly connected to one side of the fixed plate (301) away from the copper strip body (100), an air compression device (205) is provided on one side of the programmable controller (201) away from the fixed plate (301), a nozzle (210) is fixedly connected to the opening of the air compression device (205), and the nozzle (210) is used to blow compressed air toward the edge of the copper strip body (100) at a certain angle and speed.

2. The device for removing watermarks from the edge of copper and copper alloy strips according to claim 1, characterized in that: Two fixing plates (301) are provided, and the two fixing plates (301) are symmetrically arranged on the upper and lower sides of the copper strip body (100); four programmable controllers (201) are provided, and the four programmable controllers (201) are symmetrically fixedly connected to the surfaces of the two fixing plates (301) in pairs.

3. The device for removing watermarks from the edge of copper and copper alloy strips according to claim 2, characterized in that: The two programmable controllers (201) fixedly connected to the surface of the same fixed plate (301) are both symmetrically fixedly connected to a driver (203) at their ends away from each other, the driver (203) is fixedly connected to a stepper motor (202) at one side away from the programmable controller (201), and the programmable controller (201) is slidably connected to a moving body (204) at one side away from the fixed plate (301).

4. The device for removing watermarks from the edge of copper and copper alloy strips according to claim 3, characterized in that: Four of the air compression devices (205) are provided, and the four air compression devices (205) are respectively fixedly connected to a side of the moving body (204) away from the programmable controller (201), and the upper and lower air compression devices (205) are symmetrical with each other along the copper strip body (100), and the air compression devices (205) are symmetrically provided with fitting grooves (206) on one side close to each other in the vertical direction, and the upper and lower fitting grooves (206) can fit with each other.

5. The device for removing watermarks from the edge of copper and copper alloy strips according to claim 4, characterized in that: A filter frame (207) is disposed outside the nozzle (210); a filter opening (208) is provided at one end of the filter frame (207) away from the air compression device (205); a threaded ring (209) is fixedly connected to one side of the filter frame (207) close to the air compression device (205); a threaded groove (211) is provided at a location outside the nozzle (210) of the air compression device (205); and the threaded ring (209) is threadedly connected to the nozzle (210).

6. The device for removing watermarks from the edge of copper and copper alloy strips according to claim 2, characterized in that: Four screw holes (302) are provided at both ends of the two fixing plates (301), connecting rods (303) are provided at both ends of the fixing plates (301) on the sides close to each other, and through rods (305) are provided on the sides close to each other of the connecting rods (303) provided on the same fixing plate (301), and water-stain wiping cotton (304) is slidably connected to the outside of the through rods (305).

7. The device for removing watermarks from the edge of copper and copper alloy strips according to claim 6, characterized in that: Both ends of the through rod (305) are provided with a cross groove (306); a cross block (310) is fixedly connected to one side of the connecting rod (303) close to the through rod (305); the cross blocks (310) are respectively engaged with the cross grooves (306); ends of the two connecting rods (303) on one side that are away from each other are fixedly connected to a resistance block (309); and a sliding groove (312) is provided on the fixing plate (301) at the resistance block (309).

8. The device for removing watermarks from the edge of copper and copper alloy strips according to claim 7, characterized in that: The resistance block (309) slides inside the sliding groove (312), and a spring (307) is fixedly connected between the resistance block (309) and the inner wall of the sliding groove (312), and a telescopic rod (308) is arranged in the middle of the spring (307), and the two ends of the telescopic rod (308) are respectively fixedly connected to the side where the resistance block (309) and the inner wall of the sliding groove (312) are close to each other, and two right-angle fixed blocks (311) are symmetrically fixedly connected to the two ends of the side of the fixed plate (301) away from the programmable controller (201).

9. The device for removing watermarks from the edge of copper and copper alloy strips according to claim 5, characterized in that: The opening state of the filter opening (208) is in an inclined state, and the interior of the filter frame (207) near the filter opening (208) is configured as two upper and lower flat-topped cones that fit together.

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