Auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating

Abstract

The invention relates to the technical field of coating surface treatment, in particular to a zinc-aluminum-nickel alloy coating surface treatment auxiliary device which comprises a machining table and an adjustable scraper assembly arranged in the machining table, the adjustable scraper assembly comprises a rotary disc, the rotary disc is arranged in the machining table and rotationally connected with the machining table, and the rotary disc is arranged in the machining table and rotationally connected with the machining table. An annular piece is fixed to the middle of the rotary disc, four movable frames are slidably connected into the annular piece, rotating shafts are rotatably connected into the movable frames, one ends of the rotating shafts penetrate through the movable frames and are fixedly provided with scrapers, and first connecting frames are hinged to the ends, located on the left side and the right side, of the movable frames. The distance between the scrapers can be accurately adjusted through an electric telescopic rod driving structure, coating residues can be efficiently, uniformly and thoroughly scraped off whether rectangular or round metal pieces exist, and the surface treatment quality and efficiency are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of coating surface treatment technology, and more specifically, to an auxiliary device for surface treatment of zinc-aluminum-nickel alloy coatings. Background Technology

[0002] In the field of metal surface treatment, zinc-aluminum-nickel alloy coatings are widely used in many industries such as automobile manufacturing, aerospace, and machining due to their excellent corrosion resistance, good mechanical strength and stable chemical properties.

[0003] During the coating process, defects such as residues and burrs inevitably occur on the coating surface. These defects not only affect the appearance quality of metal parts but may also reduce their protective performance and service life. Therefore, efficient and precise treatment of zinc-aluminum-nickel alloy coating surfaces is crucial. However, existing scraper-type zinc-aluminum-nickel alloy coating surface treatment devices mainly use hydraulic cylinders to control the position of the scraper. The simple structure can only process rectangular metal parts and cannot meet the diverse production needs of enterprises. If cylindrical metal parts need to be processed, enterprises often need to purchase multiple specialized devices, which leads to a significant increase in equipment costs and production space occupation. In addition, existing equipment lacks flexibility in adjusting the scraper structure and makes it difficult to accurately adjust the scraper position and working state according to the size of the metal parts. This results in low efficiency and poor effect in removing surface residues, and the inability to guarantee the stability of the treatment quality.

[0004] Based on this, the present invention discloses an auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating. Summary of the Invention

[0005] To address the shortcomings of existing equipment in the background art regarding the lack of flexibility in adjusting the scraper structure, making it difficult to precisely adjust the scraper position and working state according to the size of the metal part, resulting in low efficiency and poor effect in removing surface residue and inability to guarantee the stability of processing quality, this invention provides an auxiliary device for surface treatment of zinc-aluminum-nickel alloy coatings, comprising: a processing table, and further comprising: An adjustable scraper assembly, located inside the processing table, is used to remove residue from the surface of zinc-aluminum-nickel alloy plating. The adjustable scraper assembly includes a turntable, which is located inside the processing table and rotatably connected to it. A ring-shaped component is fixed in the middle of the turntable, and four sets of movable frames are slidably connected inside the ring-shaped component. Fixing components are fixed on both sides of the inner cavity of the processing table, and sliders are slidably connected to the outer sides of the fixing components. Several sets of mounting holes are opened on the sliders, and the mounting holes are used to assemble the robotic arm to transport metal parts. A first drive motor is fixed at the bottom of one set of movable frames, and the output shaft of the first drive motor is fixed to one set of rotating shafts. An internal gear is rotatably connected to the outer side of the ring-shaped component. Two sets of electric telescopic rods are fixed at the bottom of the inner cavity of the processing table, and connecting components are fixed at the telescopic ends of the electric telescopic rods.

[0006] Because the existing equipment's scraper assembly uses a fixed installation structure, the distribution and longitudinal section length of the scrapers cannot be adjusted according to the thickness, width, and shape of the metal parts. When processing rectangular metal parts, the fixed-length scrapers cannot completely cover the surface of the metal parts, resulting in incomplete removal of plating residue in the edge areas. Traditional scraper spacing adjustment relies on manual bolt tightening, which cannot meet the requirements of high-precision surface treatment. This technical solution uses a first gear fixed to the outer periphery of the turntable, a second drive motor fixed to the bottom of the processing table, and a second gear fixed to the output shaft of the second drive motor. The scraper contacts the zinc-aluminum-nickel alloy plating surface. As a further improvement to this technical solution, the cross-section of the rotating shaft is gear-shaped, the internal gear meshes with the rotating shaft, the first connecting frame and the second connecting frame are in opposite directions, and sliding grooves are provided on both sides of the turntable. The first connecting frame and the second connecting frame pass through the sliding grooves on both sides of the turntable and are slidably connected to the sliding grooves.

[0007] Based on this, the existing scraper assembly only supports linear reciprocating motion, which can only scrape rectangular and flat metal parts, and cannot handle circular, elliptical, or other curved metal parts. The traditional linear scraper cannot scrape along the circumference of the pipe, resulting in excessive residual coating residue, requiring secondary manual processing, which increases labor costs. Moreover, the existing equipment is completely unsuitable for irregularly shaped metal parts, requiring companies to purchase additional specialized equipment. This solution adopts an adjustable scraper assembly, which is set inside the processing table for treating residue on the surface of zinc-aluminum-nickel alloy plating. The adjustable scraper assembly includes a turntable, a ring, four sets of movable frames, a first connecting frame, and a second connecting frame. By adjusting the distribution and rotation of the scraper during operation, it can meet the surface treatment needs of metal parts with various shapes such as rectangles and circles, reducing costs. As a further improvement to this technical solution, there are fixed parts on both sides of the inner cavity of the processing table. A slider is slidably connected to the outside of the fixed parts. Several sets of mounting holes are opened on the slider, and the mounting holes are used to assemble a robot to transport metal parts with bolts.

[0008] In another solution, existing equipment generates a large amount of metal dust during scraping operations. The metal residue generated during scraping operations directly accumulates at the bottom of the device and in the gap between the scrapers. The accumulated residue comes into direct contact with moving parts such as scrapers, guide rails, and bearings, causing abrasive wear. In addition, the accumulation of residue can easily cause scraper jamming and even lead to motor overload failure. As a further improvement to this technical solution, fixed shells are fixed on both sides of the processing table. The bottom of the fixed shell is connected to an extraction pipe, and the bottom end of the extraction pipe is connected to a negative pressure fan. The fixed shell is connected to the processing table and is located between the movable ring and the turntable.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating, the adjustable scraper assembly can flexibly adjust the distribution and longitudinal section length of the scrapers according to the size and shape of the metal material. The gear transmission structure ensures that the four sets of scrapers rotate synchronously, making the scraping operation precise and stable. The electric telescopic rod drive structure realizes the precise adjustment of the scraper spacing. Whether it is a rectangular or round metal part, the coating residue can be scraped off efficiently, uniformly and thoroughly, significantly improving the quality and efficiency of surface treatment.

[0010] 2. In this auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating, by controlling different movement modes of the scraper assembly, the surface treatment requirements of coating of metal parts of various shapes such as rectangles and circles can be met. By adjusting the distribution and rotation mode of the scraper, both planar scraping of rectangular metal parts and circumferential scraping of circular metal parts can be performed, which greatly expands the applicability of the device, effectively reduces the cost of replacing equipment due to differences in the shape of metal parts, and improves the utilization rate of equipment.

[0011] 3. In this auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating, a negative pressure collection system is used to promptly suck in and discharge residues during scraping operations, preventing residues from accumulating inside the device and affecting the scraping effect or polluting the working environment. At the same time, it can also prevent residues from causing wear to the internal components of the device, extend the service life of each component, reduce the frequency and cost of equipment maintenance, ensure the long-term stable operation of the device, and reduce the operating costs of enterprises. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic cross-sectional view of the side of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the disassembly structure of the annular component of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A; Figure 6 This is a schematic diagram of the cleaning structure for circular metal according to the present invention; Figure 7 This is a schematic diagram of the cleaning structure for rectangular metal according to the present invention; Figure 8 This is a three-dimensional structural diagram of the front of the turntable of the present invention; Figure 9 This is a three-dimensional structural diagram of the back of the turntable of the present invention.

[0013] The meanings of the labels in the diagram are as follows: 1. Processing table; 2. Turntable; 3. Ring-shaped component; 4. Movable frame; 5. Rotating shaft; 6. Scraper; 7. First connecting frame; 8. Second connecting frame; 9. First drive motor; 10. Internal gear; 11. Movable ring; 12. Slide groove; 13. First gear; 14. Second drive motor; 15. Second gear; 16. Electric telescopic rod; 17. Connecting component; 18. Fixed shell; 19. Extraction tube; 20. Fixing component; 21. Slider. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] The existing scraper-type zinc-aluminum-nickel alloy coating surface treatment device mainly uses a hydraulic cylinder to control the position of the scraper. Its simple structure can only process rectangular metal parts and cannot process round, elliptical or other curved metal parts.

[0016] Therefore, the present invention provides an auxiliary device for surface treatment of zinc-aluminum-nickel alloy coatings. See [link to device]. Figures 1-2 As shown, it includes a processing table 1, and also includes: An adjustable scraper assembly, located inside the processing table 1, is used to remove residue from the surface of the zinc-aluminum-nickel alloy plating. The adjustable scraper assembly includes a turntable 2, which is located inside the processing table 1 and rotatably connected to it. A ring-shaped component 3 is fixed in the middle of the turntable 2. Four sets of movable frames 4 are slidably connected inside the ring-shaped component 3. A rotating shaft 5 is rotatably connected inside the movable frame 4. One end of the rotating shaft 5 passes through the movable frame 4 and is fixed with a scraper 6. The ends of the movable frames 4 on the left and right sides are hinged with a first connecting frame 7, and the ends of the movable frames 4 on the upper and lower sides are hinged with a second connecting frame 8. The ends of the first connecting frame 7 and the second connecting frame 8 are both hinged with movable rings 11. A first drive motor 9 is fixed at the bottom of one set of movable frames 4, and the output shaft of the first drive motor 9 is fixed to one set of rotating shafts 5. An internal gear 10 is rotatably connected to the outside of the ring-shaped component 3. Two sets of electric telescopic rods 16 are fixed at the bottom of the inner cavity of the processing table 1, and a connecting piece 17 is fixed at the telescopic end of the electric telescopic rod 16.

[0017] For details, see Figures 1-2 As shown, when the scraper 6 is adjusted to be longitudinally rectangular, the rectangular metal part passes under the scraper assembly during transportation, and the scraper 6 will efficiently scrape off the plating residue on the surface of the metal part. When the scraper 6 is adjusted to be evenly distributed, by controlling the turntable 2 and the movable frame 4 to drive the scraper 6 to rotate, the plating residue on the surface of the circular metal part can be scraped off in all directions. During operation, when the first drive motor 9 is started, the power output of the first drive motor 9 drives the rotating shaft 5 connected to it to rotate. Since the cross-section of the rotating shaft 5 is gear-shaped, and the internal gear 10 is meshed with the rotating shaft 5, through the principle of gear transmission, the rotation of the rotating shaft 5 will drive the internal gear 10 to rotate, thereby enabling each set of rotating shafts 5 to rotate synchronously. As the rotating shaft 5 rotates, the scraper 6 connected to it will also rotate synchronously. By controlling the rotation angle of the scraper 6, the length of the longitudinal section of the scraper 6 can be precisely adjusted. At the same time, the electric telescopic rod 16 is operated. The telescopic end of the electric telescopic rod 16 drives the connecting piece 17 to move. The connecting piece 17 is sleeved on the outside of the movable ring 11. On the side, when the connector 17 moves, it applies a pulling force to the movable ring 11. The two sets of movable rings 11 pull the first connecting frame 7 and the second connecting frame 8 to move respectively. Since the first connecting frame 7 and the second connecting frame 8 are in different directions and intersect at the same reference point, and pass through the slide grooves 12 opened on both sides of the turntable 2 and are slidably connected to the slide grooves 12, the slide grooves 12 provide a stable sliding guide for the first connecting frame 7 and the second connecting frame 8. Therefore, the movement of the first connecting frame 7 and the second connecting frame 8 will pull the movable frame 4 to move back and forth or towards each other, so as to conveniently control the distance between the two sets of scrapers 6 and make it flexible to adjust according to the size of the metal material.

[0018] Further, see Figure 2 , Figures 5-8As shown, when a set of rotating shafts 5 starts to rotate under the drive of the first drive motor 9, the four sets of rotating shafts 5 rotate at the same speed and direction through the synchronous meshing of the internal gear 10. The outer periphery of the turntable 2 is fixed with a first gear 13, the bottom of the processing table 1 is fixed with a second drive motor 14, the output shaft of the second drive motor 14 is fixed with a second gear 15, the scraper 6 is in contact with the zinc-aluminum-nickel alloy plating surface, the cross-section of the rotating shaft 5 is gear-shaped, and the internal gear 10 is meshed with the rotating shaft 5. During operation, when the second drive motor 14 is started, the output shaft of the second drive motor 14 drives the second gear 15 to rotate. The second gear 15 meshes with the first gear 13, transmitting power to the turntable 2, causing the turntable 2 to drive the entire scraper assembly to rotate around the central axis of the processing table 1. At this time, in conjunction with the rotation of the scraper 6 itself, it can achieve circumferential scraping of the surface of the circular metal part, ensuring that the plating residue is removed evenly and thoroughly. At the same time, it keeps the rotation angle of the scraper 6 consistent, ensuring the synchronicity of the longitudinal section length adjustment process of the scraper 6.

[0019] Further, see Figure 2 , Figure 4 and Figure 5 As shown, in order to achieve precise positioning and transportation of metal parts, and to ensure that the metal parts pass smoothly under the scraper assembly and ensure the continuity of the scraping operation, both sides of the inner cavity of the processing table 1 are fixed with fixing parts 20. The outer side of the fixing parts 20 is slidably connected with a slider 21. Several sets of mounting holes are opened on the slider 21, and the mounting holes are used to assemble the robot to transport the metal parts with bolts. One side of the first gear 13 passes through the processing table 1, and the second gear 15 meshes with the first gear 13. During operation, the fixed part 20 and the slider 21 form a sliding mechanism. The robot is fixed to the mounting hole of the slider 21 by bolts and can move laterally along the fixed part 20. The output shaft of the second drive motor 14 drives the second gear 15 to rotate. The meshing transmission between the second gear 15 and the first gear 13 effectively transmits the power to the turntable 2, causing the turntable 2 to drive the entire scraper assembly to rotate, realizing the circumferential scraping function of the circular metal parts. This greatly expands the applicability of the device and enables it to meet the coating surface treatment requirements of metal parts of different shapes.

[0020] Furthermore, refer to Figure 3 , Figure 4 , Figure 8 and Figure 9As shown, in order to form a rectangular or circular distribution and effectively avoid the scraper assembly from shifting due to shaking during operation, thus affecting the accuracy of the scraping operation, the first connecting frame 7 and the second connecting frame 8 are oriented in opposite directions. Slide grooves 12 are provided on both sides of the turntable 2, and the first connecting frame 7 and the second connecting frame 8 pass through the slide grooves 12 on both sides of the turntable 2 and are slidably connected with the slide grooves 12. The connecting piece 17 is sleeved on the outside of the movable ring 11, and the movable ring 11 is slidably connected with the connecting piece 17. During operation, when the movable ring 11 pulls the first connecting frame 7 and the second connecting frame 8 under the tension of the connecting piece 17, due to their reverse arrangement, the movable frames 4 on the left and right sides can move in the opposite direction to the movable frames 4 on the upper and lower sides, thereby adjusting the distribution shape of the scraper 6. The presence of the slide groove 12 provides a stable sliding guide for the first connecting frame 7 and the second connecting frame 8, ensuring the stability of the movable frame 4 during movement. When the electric telescopic rod 16 extends or retracts, the connecting piece 17 will slide smoothly along the movable ring 11. This structural design not only ensures the stability of the force direction of the movable ring 11, but also prevents the movable ring 11 from shifting during movement, ensuring that the first connecting frame 7 and the second connecting frame 8 can accurately pull the movable frame 4 to adjust the spacing.

[0021] In addition, since a large amount of metal dust is generated during the scraping operation, in order to avoid the accumulation of residue in the device and prevent it from affecting the scraping effect or causing pollution to the working environment, both sides of the processing table 1 are fixed with a fixed shell 18. The bottom of the fixed shell 18 is connected to an extraction pipe 19. The bottom end of the extraction pipe 19 is connected to a negative pressure fan. The fixed shell 18 is connected to the processing table 1 and is located between the movable ring 11 and the turntable 2. During operation, the negative pressure fan applies suction to the fixed shell 18 through the extraction pipe 19, creating a negative pressure environment inside the device. After the scraper 6 removes the coating residue, the residue is sucked into the fixed shell 18 by the airflow and discharged from the device for collection through the extraction pipe 19. Since the fixed shell 18 is connected to the inside of the processing table 1 and is located in a critical position between the movable ring 11 and the turntable 2, directly facing the working area of ​​the scraper assembly, when the scraper 6 performs the scraping operation, the negative pressure generated by the negative pressure fan connected to the extraction pipe 19 can quickly suck the residue into the interior of the fixed shell 18 for collection. This position design greatly shortens the residence time of the residue in the device, significantly improves the cleaning efficiency, and avoids the residue from causing wear to the turntable 2, movable ring 11, and other components, extending the service life of each component of the device and ensuring the stable operation of the device.

[0022] In summary, this invention effectively solves the problem that existing scraper-type zinc-aluminum-nickel alloy coating surface treatment devices mainly use hydraulic cylinders to control the position of the scraper, have a simple structure, and can only process rectangular metal parts, thus failing to meet the diverse production needs of enterprises.

[0023] Working principle: First, the first drive motor 9 is started, which drives the fixed rotating shaft 5 to rotate through its output shaft. Since the cross-section of the rotating shaft 5 is gear-shaped and meshes with the internal gear 10, according to the gear transmission principle, the rotation of the rotating shaft 5 will drive the internal gear 10, thereby causing the four sets of rotating shafts 5 to rotate synchronously. The rotation of the rotating shaft 5 drives the scraper 6 to rotate synchronously. By controlling the rotation angle of the scraper 6, its longitudinal section length can be precisely adjusted. At the same time, the electric telescopic rod 16 extends and retracts, driving the connecting piece 17 to move. The connecting piece 17 slides on the outside of the movable ring 11, applying a pulling force to the movable ring 11. The movable ring 11 pulls the first connecting frame 7 and the second connecting frame 8, which are set in opposite directions. The first connecting frame 7 and the second connecting frame 8 slide through the sliding grooves 12 on both sides of the turntable 2, driving the movable frames 4 on the left and right sides and the top and bottom sides to move in opposite directions. This allows for flexible adjustment of the distance between the two sets of scrapers 6, so that the scrapers 6 can be adjusted to a longitudinal rectangular distribution or an equidistant circular distribution according to the size of the metal part. When the scraper 6 is adjusted... When the rectangular metal part is arranged in a longitudinal rectangle, it is smoothly transported by the robot along the slide rail of the fixed part 20 and passes under the scraper assembly. The scraper 6 contacts the coating surface of the metal part and directly scrapes off the surface residue. If the scraper 6 is adjusted to be distributed in an equidistant circle, the second drive motor 14 is started, and its output shaft drives the second gear 15 to rotate. The second gear 15 meshes with the first gear 13 and transmits power to the turntable 2, so that the entire scraper assembly rotates around the central axis of the processing table 1. At this time, the scraper 6 rotates on its own axis and revolves with the assembly to scrape the surface of the circular metal part in a circumferential manner, ensuring that the residue is removed evenly. During the scraping operation, the external negative pressure fan applies suction to the funnel-shaped residue collection channel of the fixed shell 18 through the extraction pipe 19, forming a negative pressure environment inside the device. The coating residue scraped off by the scraper 6 is quickly sucked into the fixed shell 18 under the action of airflow and discharged from the device through the extraction pipe 19 for centralized collection, so as to avoid the residue accumulation affecting the scraping effect or polluting the working environment.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for surface treatment of zinc-aluminum-nickel alloy coatings, comprising a processing table (1), characterized in that, Also includes: An adjustable scraper assembly is located inside the processing table (1) and is used to treat the residue on the surface of the zinc-aluminum-nickel alloy plating. The adjustable scraper assembly includes a turntable (2), which is located inside the processing table (1) and rotatably connected to it. A ring-shaped component (3) is fixed in the middle of the turntable (2). Four sets of movable frames (4) are slidably connected inside the ring-shaped component (3). A rotating shaft (5) is rotatably connected inside each movable frame (4). One end of the rotating shaft (5) passes through the movable frame (4) and is fixed with a scraper (6). First connecting frames (7) are hinged to the ends of the movable frames (4) on the left and right sides. The movable frames (4) on the upper and lower sides... The end of the frame (4) is hinged to a second connecting frame (8). The ends of the first connecting frame (7) and the second connecting frame (8) are both hinged to a movable ring (11). The bottom of one set of movable frames (4) is fixed to a first drive motor (9), and the output shaft of the first drive motor (9) is fixed to one set of rotating shafts (5). The outer side of the ring (3) is rotatably connected to an internal gear (10). The bottom of the inner cavity of the processing table (1) is fixed to two sets of electric telescopic rods (16), and the telescopic end of the electric telescopic rod (16) is fixed to a connecting piece (17).

2. The auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating according to claim 1, characterized in that: The turntable (2) is fixed with a first gear (13) on its outer periphery, the processing table (1) is fixed with a second drive motor (14) at its bottom, the output shaft of the second drive motor (14) is fixed with a second gear (15), and the scraper (6) is in contact with the zinc-aluminum-nickel alloy coating surface.

3. The auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating according to claim 1, characterized in that: The connector (17) is sleeved on the outside of the movable ring (11), and the movable ring (11) and the connector (17) are slidably connected.

4. The auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating according to claim 1, characterized in that: The cross-section of the shaft (5) is gear-shaped, and the internal gear (10) meshes with the shaft (5).

5. The auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating according to claim 1, characterized in that: Both sides of the inner cavity of the processing table (1) are fixed with fasteners (20), and a slider (21) is slidably connected to the outside of the fastener (20). Several sets of mounting holes are opened on the slider (21), and the mounting holes are used to assemble the robot to transport the metal parts with bolts.

6. The auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating according to claim 2, characterized in that: One side of the first gear (13) passes through the processing table (1), and the second gear (15) meshes with the first gear (13).

7. The auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating according to claim 1, characterized in that: The first connecting frame (7) and the second connecting frame (8) are in opposite directions. Both sides of the turntable (2) are provided with sliding grooves (12), and the first connecting frame (7) and the second connecting frame (8) pass through the sliding grooves (12) on both sides of the turntable (2) and are slidably connected with the sliding grooves (12).

8. The auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating according to claim 1, characterized in that: Both sides of the processing table (1) are fixed with a fixed shell (18), and the bottom of the fixed shell (18) is connected to an extraction pipe (19), and the bottom end of the extraction pipe (19) is connected to a negative pressure fan.

9. The auxiliary device for surface treatment of zinc-aluminum-nickel alloy coating according to claim 8, characterized in that: The fixed shell (18) is connected to the processing table (1), and the fixed shell (18) is located between the movable ring (11) and the turntable (2).

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