Surface treatment device and method before electroplating

Abstract

The invention belongs to the field of machining surface treatment devices, and discloses an electroplating front surface treatment device and method.The electroplating front surface treatment device comprises an electric telescopic rod, a supporting frame and a polishing assembly, a fixing frame is arranged at the upper end of a hub frame, the supporting frame is slidably connected to the upper end of the fixing frame, and the polishing assembly is fixed to the front end of the supporting frame; the polishing assembly comprises memory metal, a flexible layer, a first rotating shaft, a second rotating shaft, polishing paper and a synchronous belt, the outer sides of the first rotating shaft and the second rotating shaft are sleeved with the polishing paper, a limiting assembly is slidably arranged on the inner side of the supporting frame, and a traction rod is fixed to the side, close to the second rotating shaft, of the supporting frame; after the memory metal on the polishing assembly receives the pressure given by the spoke, the memory metal can be bent and wound on the outer side of the spoke, the polishing paper is driven by the servo motor to rub on the surface of the spoke, and therefore welding seams at the upper end of the spoke can be polished in multiple directions, and the time for polishing the welding seams in different directions can be saved.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical processing surface treatment devices, and in particular relates to a surface treatment device and method before electroplating. Background Art

[0002] The purpose of treating the workpiece surface before electroplating is to ensure the uniformity and adhesion of the electroplated layer, remove impurities such as oil, rust and oxide layer on the surface, and provide a clean and smooth surface, which is crucial to the quality and durability of the electroplated layer. Surface treatment can also prevent defects in the electroplating process, such as bubbles, pinholes and peeling, and ensure the continuity and consistency of the electroplated layer, thereby improving the performance and appearance of the final product;

[0003] For example, a hub embryo weld grinding equipment for wheel hub processing with application number CN202411408166.7, when grinding the weld of the hub, the roller is limited by a U-shaped guide rail so that the grinding roller can be accurately moved to the angle weld of the hub. However, since the grinding roller is cylindrical, the grinding direction is single when grinding the weld, and it is not convenient to grind the corner position of the weld. The welding part between the spoke and the rim is usually welded around the edge of the spoke, so it is necessary to frequently adjust the position of the grinding roller when polishing welds in different directions. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a surface treatment device and method before electroplating, which solves the problem in the prior art that the position of the grinding roller needs to be frequently adjusted when polishing welds in different orientations, and the weld welded to the inner wall of the hub is arc-shaped, while the polishing roller is straight and the contact with the protrusion of the arc-shaped weld is poor.

[0005] The purpose of this disclosure can be achieved through the following technical solutions:

[0006] A surface treatment device before electroplating, comprising: an electric telescopic rod, a support frame and a polishing assembly, wherein a hub is installed on the outer side of the electric telescopic rod, and a spoke is welded on the inner side of the hub, a fixing frame is arranged on the upper end of the hub frame, and the upper end of the fixing frame is slidably connected to the support frame, and a polishing assembly is fixed on the front end of the support frame;

[0007] The polishing assembly comprises a memory metal, a first rotating shaft of a flexible layer, a second rotating shaft, polishing paper and a synchronous belt, two groups of memory metal are fixed on the side of the support frame close to the spoke, and a flexible layer is fixed between the two groups of memory metal, the first rotating shaft is fixed on the end of the flexible layer close to the support frame, and the second rotating shaft is fixed on the end of the flexible layer away from the first rotating shaft, polishing paper is sleeved on the outer sides of the first rotating shaft and the second rotating shaft, and synchronous belts are sleeved on the upper and lower ends of the first rotating shaft, and an iron block is fixed on the end of the memory metal close to the second rotating shaft;

[0008] A roller is sleeved on one end of the synchronous belt away from the first rotating shaft, and the lower end surface of the roller is connected to the output end of the servo motor. A limit assembly is slidably arranged on the inner side of the support frame, and a traction rod is fixed on the side of the support frame close to the second rotating shaft.

[0009] In some disclosures, a hub frame is fixed to one end of the electric telescopic rod away from the fixed frame, and a guide rail is fixed to the side wall of the electric telescopic rod, a bearing seat is fixed to the lower end of the fixed frame, and a guide rod is fixed to the side of the bearing seat close to the spoke, and the position of the guide rod corresponds to the position of the guide rail.

[0010] In some disclosures, limiting tubes are provided on both sides of the fixing frame, and a supporting spring is fixed on the inner side of the limiting tube, and the supporting frame is located at the upper end of the supporting spring.

[0011] In some disclosures, the support frame includes a lower support seat, an upper support plate, an oil groove, a fixed seat and a small bearing seat, the upper end of the limit tube is slidably connected to the lower support seat, and the upper support plate is fixed to the upper end surface of the lower support seat, and an oil groove is opened between the upper support plate and the lower support seat.

[0012] In some disclosures, a fixing seat is fixed to the upper end surface of the upper support plate and the lower end surface of the lower support seat, and a small bearing seat is embedded in the inner side of the upper support plate and the lower support seat.

[0013] In some disclosures, the iron block is configured as a vertically long strip.

[0014] In some disclosures, a slide groove is provided on one side of the support frame close to the polishing assembly, and the moving path of the slider is the same as the path of the slide groove.

[0015] In some disclosures, the limit assembly includes a support rod, a piston, a slider and a return spring, one end of the oil groove is slidably connected to the support rod, and the end of the support rod located in the oil groove is sealed with the piston, the other end of the oil groove is fixed with a return spring, and one end of the return spring is fixed with a slider, and a magnet is fixed to the outside of the slider.

[0016] In some disclosures, a pulley is fixed to one end of the support rod away from the oil tank, and the center axis of the pulley is directed vertically downward.

[0017] A surface treatment method before electroplating, comprising the following steps:

[0018] S1. Grind the weld first to remove the material with higher hardness on the weld surface to provide a relatively flat foundation for polishing;

[0019] S2. Apply polishing paste to the welds of multiple spokes at one time, and install the hub coaxially on the outside of the electric telescopic rod. Then fix the fixing frame to the output end of the electric telescopic rod through the bearing seat at the bottom. At this time, the guide rod is inserted into the guide rail.

[0020] S3. During polishing, the electric telescopic rod drives the fixing frame, the supporting frame and the polishing assembly to move toward the side close to the spoke;

[0021] S4. Since the polishing assembly is not parallel to the spoke, when the polishing assembly contacts the side wall of the spoke, the end of the polishing assembly away from the first rotating shaft will contact the spoke first, and the side of the polishing assembly corresponding to the support rod will contact the spoke later. During this process, the edge of the side of the spoke contacts the polishing paper between the support rod and the traction rod, and provides the polishing assembly with a pressure opposite to that of the pressure support rod and the traction rod, so that the memory metal is bent at the side ridges of the spoke. However, after the memory metal is bent, it will wrap around the side wall of the spoke. In the process, the memory metal collides with the remaining side ridges of the spoke, so that the memory metal is deformed and wraps around the side wall of the spoke. At this time, the second rotating shaft and the first rotating shaft are located on the same side of the spoke.

[0022] S5. At this time, the iron block outside the second rotating shaft is attracted by the magnetic force of the magnet. At this time, the iron block is magnetically connected to the magnet. When the support frame moves toward the direction close to the spoke, it squeezes the support rod, causing the support rod to slide inward along the oil groove. The hydraulic oil pushes the slider, the magnet, the iron block, and the second rotating shaft to slide toward the side close to the first rotating shaft, thereby tightening the polishing paper.

[0023] S6, starting the servo motor, the servo motor drives the drum to rotate, and the drum drives the first rotating shaft to rotate through the synchronous belt, and when the first rotating shaft rotates, the second rotating shaft is driven to rotate through the polishing paper, and the polishing surface of the polishing paper continuously rubs on the outer surface of the spoke, so as to polish the weld of the spoke, thereby completing the surface treatment of the weld of the spoke, which can improve the electroplating quality compared with direct electroplating after grinding;

[0024] S7. When the spokes need to be replaced, first turn off the servo motor, and the staff rotates the wheel hub. When the rotational force is greater than the magnetic force between the iron block and the magnet, the iron block is separated from the magnet. As the wheel hub continues to rotate, the memory metal will be straightened during the process of detaching from the polishing assembly, thereby resetting the polishing assembly. At this time, start the electric telescopic rod to drive the fixed frame to move to the side away from the wheel hub, so as to facilitate the next use. If the polishing assembly cannot be completely reset and the memory metal has not become straight, the staff can directly observe it and can actively straighten and reset it by hand.

[0025] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0026] A fixed connection is one where the parts or components are fixed without any relative movement;

[0027] A rotational connection is a connection between parts that allows the parts to rotate relative to each other;

[0028] Threaded connection is a detachable fixed connection with the advantages of simple structure, reliable connection, and convenient assembly and disassembly. It is widely used in the fields of mechanical engineering and connection structures.

[0029] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0030] Beneficial effects of the present disclosure:

[0031] 1. When the memory metal on the polishing component receives the pressure from the spoke, it will bend and wrap around the outside of the spoke. The servo motor drives the polishing paper to rub on the surface of the spoke, so that the weld on the upper end of the spoke can be polished in multiple directions, thus saving the time of polishing welds in different directions.

[0032] 2. Since the interior of the polishing component is made of flexible material, the polishing surface is deformed after the support frame is pushed upward by the support spring, and the polishing component is fully in contact with the protrusion of the arc-shaped weld, thereby increasing the polishing area of ​​the polishing surface and the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present disclosure;

[0035] Figure 2 is a schematic diagram of an exploded structure of a fixing frame and a polishing assembly according to an embodiment of the present disclosure;

[0036] Figure 3 is a schematic diagram of the overall structure of a fixing frame and a polishing assembly according to an embodiment of the present disclosure;

[0037] Figure 4 This is an embodiment of the present disclosure Figure 3 Another perspective overall structure diagram;

[0038] Figure 5 is a schematic diagram of an exploded structure of a support frame according to an embodiment of the present disclosure;

[0039] Figure 6 is a schematic diagram of an exploded structure of a polishing assembly according to an embodiment of the present disclosure;

[0040] Figure 7 It is a schematic diagram of the overall structure of the support frame of an embodiment of the present disclosure.

[0041] In the figure: 1. hub frame; 101. electric telescopic rod; 102. spoke; 103. hub; 1011. guide rail; 2. fixed frame; 21. limit tube; 22. bearing seat; 221. guide rod; 3. support spring; 4. support frame; 41. lower support seat; 42. upper support plate; 43. oil tank; 44. fixed seat; 45. small bearing seat; 401. slide groove; 5. limit assembly; 51. support rod; 52. piston; 53. slider; 54. return spring; 511. pulley; 531. magnet; 6. polishing assembly; 61. memory metal; 62. flexible layer; 63. first rotating shaft; 64. second rotating shaft; 65. polishing paper; 66. synchronous belt; 611. iron block; 7. servo motor; 71. roller; 8. traction rod. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0043] Please refer to Figures 1 to 7 , including an electric telescopic rod 101, a support frame 4 and a polishing assembly 6, a hub 103 is installed on the outer side of the electric telescopic rod 101, and a spoke 102 is welded on the inner side of the hub 103, a fixing frame 2 is arranged on the upper end of the hub frame 1, and the upper end of the fixing frame 2 is slidably connected to the support frame 4, and the front end of the support frame 4 is fixed with the polishing assembly 6;

[0044] The polishing assembly 6 includes a memory metal 61, a flexible layer 62, a first rotating shaft 63, a second rotating shaft 64, a polishing paper 65 and a synchronous belt 66. Two groups of memory metals 61 are fixed on the side of the support frame 4 close to the spoke 102, and a flexible layer 62 is fixed between the two groups of memory metals 61. The first rotating shaft 63 is fixed to one end of the flexible layer 62 close to the support frame 4, and the second rotating shaft 64 is fixed to one end of the flexible layer 62 away from the first rotating shaft 63. The outer sides of the first rotating shaft 63 and the second rotating shaft 64 are sleeved with polishing paper 65, and the upper and lower ends of the first rotating shaft 63 are sleeved with synchronous belts 66. An iron block 611 is fixed to one end of the memory metal 61 close to the second rotating shaft 64.

[0045] A roller 71 is sleeved on one end of the synchronous belt 66 away from the first rotating shaft 63, and the lower end surface of the roller 71 is connected to the output end of the servo motor 7. A limit assembly 5 is slidingly arranged on the inner side of the support frame 4, and a traction rod 8 is fixed to the side of the support frame 4 close to the second rotating shaft 64.

[0046] When in use, the polishing assembly 6 and the limiting assembly 5 are installed on the side close to the spoke 102, and at this time, the weld at the upper end of the spoke 102 corresponds to the position of the polishing assembly 6, and the electric telescopic rod 101 is started. The electric telescopic rod 101 drives the fixing frame 2 and the supporting frame 4 to move to the side close to the spoke 102 until the polishing assembly 6 contacts the spoke 102 on the side away from the supporting frame 4. As the supporting frame 4 continues to squeeze the edge of the memory metal 61, the memory metal 61 with an original arc-shaped cross-section is flattened, and when the return spring 54 is in the original length state, the support rod 51 protrudes from the side wall of the supporting frame 4. At this time, the memory metal 61 is flattened, and the traction rod 8 compresses the polishing paper 65 to cause the flexible layer 62 and the memory metal 61 to bend along the side wall of the spoke 102. During the bending process, the memory metal 61 is impacted by the side wall of the spoke 102 and bends multiple times, thereby winding around the outside of the spoke 102, and the memory metal 61 is subjected to elastic heat training during production to make it become The shaped path is consistent with the side wall of the spoke 102, so that the memory metal 61 can be wrapped along the side wall of the spoke 102 after being compressed and deformed during use. After wrapping, the iron block 611 at the end of the memory metal 61 is adsorbed by the limit component 5, and the second rotating shaft 64 is fixed by magnetic force, thereby improving the stability of the second rotating shaft 64, which is beneficial to supporting the second rotating shaft 64 during the friction between the polishing paper 65 and the weld during polishing, and can ensure the stability of the second rotating shaft 64 and the polishing component 6 when the polishing paper 65 slides in the rotating shaft 64. After polishing is completed, the wheel hub 103 is rotated to straighten the memory metal 61 from the first rotating shaft 63 of the memory metal 61 to the second rotating shaft 64, thereby facilitating the replacement of the spoke 102. If the polishing component 6 fails to be completely reset and the memory metal 61 is not straightened, the outside of the memory metal 61 is not blocked, so that the staff can directly observe it, and the staff can actively straighten and reset it by hand.

[0047] The servo motor 7 is started, and the servo motor 7 drives the roller 71 to rotate. When the roller 71 rotates, the first rotating shaft 63 is driven to rotate through the synchronous belt 66. Since the first rotating shaft 63 and the support frame 4 are fixedly connected, the connection between the two is stable, and the side of the polishing paper 65 away from the flexible layer 62 is the polishing surface, and the head and tail of the polishing paper 65 are connected and sleeved on the outer walls of the first rotating shaft 63 and the second rotating shaft 64, so that the inner wall of the polishing paper 65 fits the first rotating shaft 63 and the second rotating shaft 64. When the first rotating shaft 63 rotates, the polishing paper 65 acts as a transmission belt between the first rotating shaft 63 and the second rotating shaft 64, thereby driving the second rotating shaft 64 to rotate. At this time, when the polishing paper 65 rotates outside the two sets of rotating shafts, the polishing surface of the polishing paper 65 rubs against the weld on the outer wall of the spoke 102, so that the welds around the spoke 102 can be polished at the same time, and polishing welds in multiple directions at the same time can save the polishing time of the welds in each direction.

[0048] The wheel hub frame 1 is fixed to one end of the electric telescopic rod 101 away from the fixed frame 4, and the guide rail 1011 is fixed to the side wall of the electric telescopic rod 101, the bearing seat 22 is fixed to the lower end of the fixed frame 2, and the guide rod 221 is fixed to the side of the bearing seat 22 close to the spoke 102, and the position of the guide rod 221 corresponds to the position of the guide rail 1011.

[0049] When in use, the hub 103 is inserted into the outer side of the electric telescopic rod 101, and then the fixing frame 2 is sleeved along the inner ring of the bearing seat 22 on the outer side of the output end of the electric telescopic rod 101. At this time, the guide rod 221 is inserted into the inside of the guide rail 1011. When the output end of the electric telescopic rod 101 retracts inward, the bearing seat 22 is driven to move toward the guide rail 1011. At this time, the guide rod 221 slides inward along the guide rail 1011, thereby fixing the circumferential position of the fixing frame 2. When the spoke 102 needs to be replaced after polishing, , the staff rotates the hub 103 counterclockwise by hand. At this time, the guide rod 221 of the fixing frame 2 and the supporting frame 4 is circumferentially restricted by the guide rail 1011 and will not rotate synchronously with the hub 103, so that when the first rotating shaft 63 is stationary, the spoke 102 rotates counterclockwise from the memory metal 61, driving the magnet 531 to separate from the iron block 611, so that the end of the memory metal 61 with the iron block 611 is smoothed outward until the memory metal 61 is completely straightened due to the elastic deformation, thereby restoring the polishing assembly 6.

[0050] Limiting tubes 21 are provided on both sides of the fixing frame 2 , and a supporting spring 3 is fixed inside the limiting tube 21 , and the supporting frame 4 is located at the upper end of the supporting spring 3 .

[0051] When the support spring 3 is in its original length, the support frame 4 is slightly lower than the outer edge of the hub 103. As the support frame 4 moves toward the spoke 102, the upper end of the support frame 4 fits against the inner wall of the hub 103 and presses the support frame 4 downward to put the support spring 3 in a compressed state. The potential energy is stored in the support spring 3 through the support spring 3, so that the support spring 3 provides an upward thrust to the support frame 4, allowing the polishing assembly 6 to continuously contact the weld at the upper end of the spoke 102, thereby improving the polishing accuracy.

[0052] The support frame 4 includes a lower support seat 41, an upper support plate 42, an oil groove 43, a fixed seat 44 and a small bearing seat 45. The upper end of the limiting tube 21 is slidably connected to the lower support seat 41, and the upper support plate 42 is fixed to the upper end surface of the lower support seat 41. An oil groove 43 is provided between the upper support plate 42 and the lower support seat 41, and the upper end surface of the upper support plate 42 and the lower end surface of the lower support seat 41 are both fixed with a fixed seat 44, and a small bearing seat 45 is embedded in the inner side of the upper support plate 42 and the lower support seat 41.

[0053] When in use, first pass the roller 71 through the small bearing seat 45 at the upper end of the lower support seat 41, and then align the edge of the upper support plate 42 with the edge of the lower support seat 41, and then pass the upper support plate 42 through the roller 71 and fix it to the upper end of the lower support seat 41. At this time, the oil groove 43 on the lower end surface of the upper support plate 42 is aligned with the oil groove 43 on the upper end surface of the lower support seat 41 to form a complete oil groove 43 flow channel, and the side walls of the oil groove 43 are sealed and matched. At this time, the upper and lower fixed seats 44 correspond to the positions of the two memory metals 61, and the end of the memory metal 61 close to the first rotating shaft 63 is fixedly connected to the fixed seat 44, which can not only provide stable support for the first rotating shaft 63, but also fix one end of the memory metal 61, so that when the memory metal 61 is bent and wound, it can be bent with the end of the memory metal 61 close to the first rotating shaft 63 as the starting point, and the other end thereof can be bent.

[0054] The iron block 611 is configured to be a long strip in the vertical direction; by increasing the length of the iron block 611, it is convenient to connect the iron block 611 with the magnet 531, and it is the iron block 611 that rotates with the second rotating shaft 64 instead of the magnet 531, which can reduce the problem that the magnet 531 is adsorbed on the spoke 102 during rotation, making the second rotating shaft 64 unable to reach the detection position.

[0055] A slide groove 401 is formed on one side of the support frame 4 close to the polishing assembly 6 , and the moving path of the slider 53 is the same as the path of the slide groove 401 .

[0056] When the second rotating shaft 64 of the polishing assembly 6 passes around the spoke 102, the reset spring 54 is in its original length state. At this time, the slider 53 is located at the end of the slide groove 401 away from the first rotating shaft 63. At this time, the position of the magnet 531 is close to the position of the iron block 611, which is convenient for adsorption of the magnet 531 and the iron block 611. At the same time, the slider 53 is pushed by the hydraulic oil to slide in the direction close to the first rotating shaft 63. At this time, not only can the polishing paper 65 be straightened, but also the contact area between the polishing paper 65 and the weld can be increased, thereby further improving the polishing effect.

[0057] The limiting assembly 5 includes a support rod 51, a piston 52, a slider 53 and a return spring 54. One end of the oil groove 43 is slidably connected to the support rod 51, and the end of the support rod 51 located in the oil groove 43 is sealed with the piston 52, the other end of the oil groove 43 is fixed with a return spring 54, and one end of the return spring 54 is fixed with the slider 53, and a magnet 531 is fixed to the outer side of the slider 53.

[0058] When the return spring 54 is in the original length state, the ends of the traction rod 8 and the support rod 51 protruding from the support frame 4 are both against the side wall of the polishing assembly 6. At this time, the polishing assembly 6 and the spoke 102 are not parallel, and the end of the polishing assembly 6 away from the first rotating shaft 63 will first contact the spoke 102, and then the side corresponding to the contact position of the polishing assembly 6 with the support rod 51 will contact the spoke 102 later. At this time, the support rod 51 and the traction rod 8 simultaneously provide pressure to the polishing assembly 6 to squeeze in the direction of the spoke 102, and the side wall edge of the spoke 102 presses against the polishing assembly 6 between the support rod 51 and the traction rod 8, thereby providing the polishing assembly 6 with a force opposite to the support rod 51 and the traction rod 8, so that the memory metal 61 bends during the extrusion process, similar to a "pop ring" wrapped around the side wall of the spoke 102, and then the iron block 611 is attracted by the magnet 531. The polishing assembly 6 is adsorbed, so that one end of the second rotating shaft 64 driven by the polishing assembly 6 is fixed. As the support frame 4 continues to approach the spoke 102, until one end of the polishing paper 65 close to the first rotating shaft 63 is in contact with the spoke 102, during this process, the polishing assembly 6 squeezes the support rod 51 inwardly, driving the support rod 51 and the piston 52 to slide inwardly along the oil groove 43. The piston 52 slides and squeezes the hydraulic oil, and pushes the slider 53 to slide toward the side close to the support rod 51. At this time, the magnet 531 at the outer end of the slider 53 and the iron block 611 are adsorbed to each other, so that when the slider 53 slides, the second rotating shaft 64 will slide in the direction close to the first rotating shaft 63, so that after the memory metal 61 is deformed, the polishing paper 65 is in a straightened state. At this time, its inner wall is still in contact with the outer walls of the two sets of rotating shafts, thereby reducing the frequency of the rotating shaft slipping in the polishing paper 65.

[0059] A pulley 511 is fixed to one end of the support rod 51 away from the oil groove 43 , and the center axis of the pulley 511 is directed vertically downward.

[0060] The pulley 511 is pressed between the polishing paper 65 and the support rod 51, so that when the polishing paper 65 rotates between the first rotating shaft 63 and the second rotating shaft 64, the polishing paper 65 drives the pulley 511 to rotate through the friction force, so that the sliding friction between the polishing paper 65 and the support rod 51 is converted into rolling friction, thereby reducing the friction between the two, thereby increasing the smoothness of the rotation of the polishing paper 65, and improving the polishing efficiency of the polishing assembly 6 by reducing the resistance of the polishing paper 65 during rotation.

[0061] A surface treatment method before electroplating, comprising the following steps:

[0062] S1. Grind the weld first to remove the material with higher hardness on the weld surface to provide a relatively flat foundation for polishing;

[0063] S2, apply polishing paste to the welds of the multiple spokes 102 at one time, and coaxially install the hub 103 on the outside of the electric telescopic rod 101, and then fix the fixing frame 2 to the output end of the electric telescopic rod 101 through the bearing seat 22 at the bottom thereof, and at this time, the guide rod 221 is inserted into the guide rail 1011;

[0064] S3, when polishing, the electric telescopic rod 101 drives the fixing frame 2, the supporting frame 4 and the polishing assembly 6 to move toward the side close to the spoke 102;

[0065] S4. Since the polishing assembly 6 and the spoke 102 are not parallel, when the polishing assembly 6 contacts the side wall of the spoke 102, the end of the polishing assembly 6 away from the first rotating shaft 63 will contact the spoke 102 first, and the side of the polishing assembly 6 corresponding to the support rod 51 will contact the spoke 102 later. In this process, the edge of the side of the spoke 102 contacts the polishing paper 65 between the support rod 51 and the traction rod 8, and provides the polishing assembly 6 with a pressure opposite to that of the pressure support rod 51 and the traction rod 8, so that the memory metal 61 is bent at the side ridges of the spoke 102. However, after being bent, the memory metal 61 will wrap around the side wall of the spoke 102. In the process, the memory metal 61 collides with the other side ridges of the spoke 102, so that the memory metal 61 is deformed and wraps around the side wall of the spoke 102. At this time, the second rotating shaft 64 and the first rotating shaft 63 are located on the same side of the spoke 102.

[0066] S5. At this time, the iron block 611 outside the second rotating shaft 64 is attracted by the magnetic force of the magnet 531. At this time, the iron block 611 is magnetically connected with the magnet 531. When the support frame 4 moves toward the direction close to the spoke 102, it squeezes the support rod 51, so that the support rod 51 slides inward along the oil groove 43. The hydraulic oil pushes the slider 53, the magnet 531, the iron block 611 and the second rotating shaft 64 to slide toward the side close to the first rotating shaft 63, so that the polishing paper 65 is tightened.

[0067] S6, start the servo motor 7, the servo motor 7 drives the roller 71 to rotate, and the roller 71 drives the first rotating shaft 63 to rotate through the synchronous belt 66, and when the first rotating shaft 63 rotates, the second rotating shaft 64 is driven to rotate through the polishing paper 65, and the polishing surface of the polishing paper 65 continuously rubs on the outer surface of the spoke 102, so as to polish the weld of the spoke 102, thereby completing the surface treatment of the weld of the spoke 102, which can improve the electroplating quality compared with direct electroplating after grinding;

[0068] S7. When the spoke 102 needs to be replaced, the servo motor 7 is turned off first, and the staff rotates the hub 103. When the rotation force is greater than the magnetic force between the iron block 611 and the magnet 531, the iron block 611 is separated from the magnet 531. As the hub 103 continues to rotate, the spoke 102 is separated from the polishing assembly 6, and the memory metal 61 is straightened, thereby resetting the polishing assembly 6. At this time, the electric telescopic rod 101 is started to drive the fixing frame 2 to move to the side away from the hub 103, so as to facilitate the next use. If the polishing assembly 6 cannot be completely reset and the memory metal 61 has not straightened, the staff can directly observe it and can actively straighten and reset it by hand.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0070] The above shows and describes the basic principles, main features and advantages of the present disclosure. Those skilled in the art should understand that the present disclosure is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure may have various changes and improvements, and these changes and improvements fall within the scope of the present disclosure to be protected.

Claims

1. A surface treatment device before electroplating, characterized in that: include: An electric telescopic rod (101), a support frame (4) and a polishing assembly (6), wherein a wheel hub (103) is installed on the outer side of the electric telescopic rod (101), and a wheel spoke (102) is welded on the inner side of the wheel hub (103); a fixing frame (2) is arranged at the upper end of the wheel hub frame (1), and the upper end of the fixing frame (2) is slidably connected to the support frame (4); and a polishing assembly (6) is fixed to the front end of the support frame (4); The polishing assembly (6) comprises a memory metal (61), a flexible layer (62), a first rotating shaft (63), a second rotating shaft (64), polishing paper (65) and a synchronous belt (66); two groups of memory metal (61) are fixed on a side of the support frame (4) close to the spoke (102), and a flexible layer (62) is fixed between the two groups of memory metal (61); the first rotating shaft (63) is fixed on one end of the flexible layer (62) close to the support frame (4), and the second rotating shaft (64) is fixed on one end of the flexible layer (62) away from the first rotating shaft (63); the outer sides of the first rotating shaft (63) and the second rotating shaft (64) are sleeved with polishing paper (65), and the upper and lower ends of the first rotating shaft (63) are sleeved with synchronous belts (66); an iron block (611) is fixed on one end of the memory metal (61) close to the second rotating shaft (64); A roller (71) is sleeved on one end of the synchronous belt (66) away from the first rotating shaft (63), and the lower end surface of the roller (71) is connected to the output end of the servo motor (7). A limit assembly (5) is slidably arranged on the inner side of the support frame (4), and a traction rod (8) is fixed on the side of the support frame (4) close to the second rotating shaft (64).

2. The device for surface treatment before electroplating according to claim 1, characterized in that: A hub frame (1) is fixed to one end of the electric telescopic rod (101) away from the fixed frame (4), and a guide rail (1011) is fixed to the side wall of the electric telescopic rod (101), a bearing seat (22) is fixed to the lower end of the fixed frame (2), and a guide rod (221) is fixed to a side of the bearing seat (22) close to the spoke (102), and the position of the guide rod (221) corresponds to the position of the guide rail (1011).

3. The device for surface treatment before electroplating according to claim 2, characterized in that: Limiting tubes (21) are provided on both sides of the fixing frame (2), and a supporting spring (3) is fixed inside the limiting tube (21), and the supporting frame (4) is located at the upper end of the supporting spring (3).

4. The device for surface treatment before electroplating according to claim 3, characterized in that: The support frame (4) comprises a lower support seat (41), an upper support plate (42), an oil groove (43), a fixed seat (44) and a small bearing seat (45); the upper end of the limit tube (21) is slidably connected to the lower support seat (41), and the upper support plate (42) is fixed to the upper end surface of the lower support seat (41); an oil groove (43) is provided between the upper support plate (42) and the lower support seat (41).

5. The device for surface treatment before electroplating according to claim 4, characterized in that: A fixing seat (44) is fixed to the upper end surface of the upper support plate (42) and the lower end surface of the lower support seat (41), and a small bearing seat (45) is embedded in the inner side of the upper support plate (42) and the lower support seat (41).

6. The device for surface treatment before electroplating according to claim 1, characterized in that: The iron block (611) is configured to be a vertically long strip.

7. The device for surface treatment before electroplating according to claim 5, characterized in that: A slide groove (401) is provided on one side of the support frame (4) close to the polishing assembly (6), and the moving path of the sliding block (53) is the same as the path of the slide groove (401).

8. The device for surface treatment before electroplating according to claim 4, characterized in that: The limit assembly (5) comprises a support rod (51), a piston (52), a slider (53) and a return spring (54); one end of the oil groove (43) is slidably connected to the support rod (51), and one end of the support rod (51) located in the oil groove (43) is sealed with the piston (52); the other end of the oil groove (43) is fixed with a return spring (54), and one end of the return spring (54) is fixed with the slider (53), and a magnet (531) is fixed on the outer side of the slider (53).

9. The device for surface treatment before electroplating according to claim 8, characterized in that: A pulley (511) is fixed to one end of the support rod (51) away from the oil groove (43), and the center axis of the pulley (511) is in the opposite direction to vertically downward.

10. A method for surface treatment before electroplating, using a device for surface treatment before electroplating according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Grind the weld first to remove the material with higher hardness on the weld surface to provide a relatively flat foundation for polishing; S2, applying polishing paste to the welds of the plurality of spokes (102) at one time, and coaxially installing the hub (103) on the outside of the electric telescopic rod (101), and then fixing the fixing frame (2) to the output end of the electric telescopic rod (101) through the bearing seat (22) at the bottom thereof, and at this time, the guide rod (221) is inserted into the guide rail (1011); S3, when polishing, the electric telescopic rod (101) drives the fixing frame (2), the supporting frame (4) and the polishing assembly (6) to move toward the side close to the spoke (102); S4. Since the polishing assembly (6) and the spoke (102) are not parallel, when the polishing assembly (6) contacts the side wall of the spoke (102), the end of the polishing assembly (6) away from the first rotating shaft (63) will contact the spoke (102) first, and the side of the polishing assembly (6) corresponding to the support rod (51) will contact the spoke (102) later. During this process, the edge of the side of the spoke (102) contacts the polishing paper (65) between the support rod (51) and the traction rod (8), and provides the polishing assembly (6) with a contact with the polishing paper (65). The pressure support rod (51) and the traction rod (8) exert opposite pressures, so that the memory metal (61) is bent at the side ridges of the spoke (102). However, after being bent, the memory metal (61) is wound along the side wall of the spoke (102). During this process, the memory metal (61) collides with the other side ridges of the spoke (102), so that the memory metal (61) is deformed and wrapped around the side wall of the spoke (102). At this time, the second rotating shaft (64) and the first rotating shaft (63) are located on the same side of the spoke (102); S5. At this time, the iron block (611) outside the second rotating shaft (64) is attracted by the magnetic force of the magnet (531). At this time, the iron block (611) is magnetically connected to the magnet (531). When the support frame (4) moves in a direction close to the spoke (102), it squeezes the support rod (51), causing the support rod (51) to slide inward along the oil groove (43). The hydraulic oil pushes the slider (53), the magnet (531), the iron block (611) and the second rotating shaft (64) to slide toward the side close to the first rotating shaft (63), thereby tightening the polishing paper (65). S6, starting the servo motor (7), the servo motor (7) drives the roller (71) to rotate, and the roller (71) drives the first rotating shaft (63) to rotate through the synchronous belt (66), and when the first rotating shaft (63) rotates, the second rotating shaft (64) is driven to rotate through the polishing paper (65), and the polishing surface of the polishing paper (65) continuously rubs against the outer surface of the spoke (102), thereby polishing the weld of the spoke (102), thereby completing the surface treatment of the weld of the spoke (102), which can improve the quality of electroplating compared with direct electroplating after grinding; S7. When the spoke (102) needs to be replaced, the servo motor (7) is first turned off, and the staff rotates the wheel hub (103). When the rotation force is greater than the magnetic force between the iron block (611) and the magnet (531), the iron block (611) and the magnet (531) are separated. As the wheel hub (103) continues to rotate, (1) is separated from the polishing assembly (6), and the memory metal (61) is straightened, thereby resetting the polishing assembly (6). At this time, the electric telescopic rod (101) is started to drive the fixing frame (2) to move to the side away from the wheel hub (103), so as to facilitate the next use. If the polishing assembly (6) cannot be completely reset and the memory metal (61) has not become straight, the staff can directly observe and can actively straighten and reset it by hand.

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