Surface treatment device used before rod wire drawing

Abstract

The utility model provides a surface treatment device before rod wire drawing, which belongs to the technical field of metal rod wire processing and comprises a sand blasting component, a cleaning component is arranged at the outlet end of the sand blasting component, a cleaning component is arranged at the outlet end of the cleaning component, and the sand blasting component, the cleaning component and the cleaning component are sequentially communicated. By arranging the sand blasting assembly, oxide skin, rust and the like on the surface of the rod wire can be removed, and by arranging the sweeping assembly and the cleaning assembly, tiny impurities on the surface of the rod wire can be further removed, so that the surface of the rod wire is smoother; the sand blasting assembly, the sweeping assembly and the cleaning assembly are used in cooperation, oxide skin, residual grinding wheel particles, metal particles, oil stains and other impurities existing on the surface of the bar wire can be completely removed, when the bar wire is subjected to the lubricating treatment procedure, the surface can be fully and evenly lubricated, the drawing machining quality is improved, the drawing defect is eliminated, and the product yield is increased; the rejection rate and the production cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of metal rod and wire processing technology, and in particular to a surface treatment device for rod and wire before drawing. Background Technology

[0002] Currently, the manufacturing process of metal rods and wires includes raw material preparation (heat treatment), surface treatment, lubrication, drawing (hot drawing, cold drawing), machining, and inspection and packaging. Among these, drawing is the core process in rod and wire production. The dimensions and surface quality of the finished rods and wires are important standards for product delivery. Throughout the entire production process, the manufacturing quality of rods and wires is affected by many factors. For example, the grinding operation in the surface treatment process before drawing is crucial. If the surface of the metal rod has defects such as peeling, pitting, or heavy patina before drawing, it needs to be ground using equipment such as grinding wheels to make the surface smooth. If the rods and wires are drawn with surface defects that have not been cleaned, the defects will be aggravated. Even when the rods and wires are machined to the specified delivery dimensions, the surface defects may still be present, resulting in scrap, reduced yield, and increased production costs.

[0003] Currently, surface treatment before drawing usually only involves grinding the surface of the drawn billet. Before surface treatment, the drawn billet typically undergoes heat treatment to reduce material hardness, increase plasticity, eliminate residual stress, and provide a good microstructure for drawing. After heat treatment, the surface of the drawn billet is covered with a thick, uneven oxide scale. After grinding to remove surface defects, impurities such as grinding wheel particles, metal particles, and oil adhere to the surface. Due to the presence of oxide scale and various impurities on the drawn billet surface, problems such as uneven lubrication, poor lubrication effect, and the continued presence of impurities occur during lubrication treatment. Poor lubrication increases friction between the wire and the die. This leads to several problems: First, it significantly increases the drawing force, potentially exceeding equipment capacity and causing interruptions or uneven deformation during drawing, resulting in noticeable diameter reduction and reduced production efficiency. Friction also causes overheating and adhesion on the wire surface, affecting surface quality and dimensional accuracy. Second, it exacerbates die wear, shortens die life, and increases production costs. Furthermore, impurities can be pressed into the wire surface, causing surface defects such as scratches and pits, affecting appearance and subsequent processing. These issues urgently need to be addressed. Utility Model Content

[0004] The purpose of this application is to provide a surface treatment device for bar and wire drawing, which aims to solve the technical problems of poor surface quality, low product yield and high production cost in the existing surface treatment process for bar and wire drawing.

[0005] This application provides a surface treatment device for bar wire before drawing, including a sandblasting assembly, a cleaning assembly at the outlet end of the sandblasting assembly, and a washing assembly at the outlet end of the cleaning assembly, wherein the sandblasting assembly, the cleaning assembly, and the washing assembly are connected in sequence.

[0006] In one embodiment, the sandblasting assembly has a first housing, a filter cartridge is provided inside the first housing, and a plurality of spray guns are provided inside the first housing, the spray guns surrounding the side of the filter cartridge and the openings of the spray guns facing the filter cartridge.

[0007] In one embodiment, the first housing has a first inlet and a first outlet on its two sides, and both the first inlet and the first outlet are connected to the filter cartridge.

[0008] In one embodiment, an inlet sensor is provided at the end of the first housing near the first inlet, and an outlet sensor is provided at the end of the first housing near the first outlet.

[0009] In one embodiment, the cleaning assembly has a second housing, inside which is a brush that completely covers the surface of the filament material.

[0010] In one embodiment, the second housing has a second inlet and a second outlet on its two sides, respectively.

[0011] In one embodiment, the brush has a hard bristle and a soft bristle, the hard bristle being disposed inside the second housing on the side near the second inlet, and the soft bristle being disposed inside the second housing on the side near the second outlet.

[0012] In one embodiment, the cleaning assembly has a third housing, a cleaning tank is provided inside the third housing, and a plurality of ultrasonic generators are provided on the third housing, with the probes of the ultrasonic generators located inside the cleaning tank.

[0013] In one embodiment, the third housing is provided with a third inlet and a third outlet on both sides, and both the third inlet and the third outlet are connected to the cleaning tank.

[0014] In one embodiment, the assembly further includes a conveying component, and there are at least two conveying components located on one or both sides of the sandblasting component, the sweeping component, or the cleaning component; the conveying component is provided with a fourth bracket, and a pair of rollers are rotatably connected to the fourth bracket. The rollers are provided with annular grooves, and the wire is located in the annular grooves of the pair of rollers.

[0015] This invention provides a surface treatment device for bar wire before drawing. Compared with existing technologies, its advantages are as follows: By setting up a sandblasting component, oxide scale, rust, and other impurities on the surface of the bar wire can be removed. By setting up a cleaning component and a washing component, minute impurities on the surface of the bar wire can be further removed, making the surface of the bar wire smoother. After lubrication drawing, a smooth and flawless product can be obtained, improving the dimensional accuracy, surface quality, and appearance of the product. The sandblasting component, cleaning component, and washing component work together to completely remove oxide scale, residual grinding wheel particles, metal particles, oil stains, and other impurities on the surface of the bar wire. This ensures that the surface of the bar wire is fully and evenly lubricated during the lubrication process, improving the drawing quality, eliminating drawing defects, increasing product yield, reducing scrap rate, and reducing production costs. This invention has a simple structure, is easy to operate, has a good surface treatment effect, improves the drawing quality, increases product yield, reduces production costs, and is highly practical. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a surface treatment device for bar wire before drawing, provided in an embodiment of this application;

[0018] Figure 2 for Figure 1 A schematic diagram of the sandblasting assembly of the surface treatment device for bar and wire drawing is shown.

[0019] Figure 3 for Figure 2 A schematic cross-sectional view of the sandblasting assembly of the surface treatment device before wire drawing is shown.

[0020] Figure 4 for Figure 1 A schematic diagram of the cleaning assembly of the surface treatment device before drawing of bar wire is shown.

[0021] Figure 5 for Figure 4 A schematic cross-sectional view of the cleaning assembly of the surface treatment device before drawing of bar wire.

[0022] Figure 6 for Figure 1 A schematic diagram of the cleaning assembly of the surface treatment device before drawing of bar wire is shown.

[0023] Figure 7 for Figure 6 A schematic cross-sectional view of the cleaning assembly of the surface treatment device before drawing of bar wire.

[0024] Figure 8 for Figure 1 The diagram shows the structural schematic of the conveying assembly of the surface treatment device before drawing of bar wire.

[0025] Explanation of symbols in the diagram:

[0026] 1. Sandblasting assembly; 101. First housing; 102. Filter cartridge; 103. Spray gun; 104. Inlet sensor; 105. Outlet sensor; 106. First inlet; 107. First outlet; 108. First frame;

[0027] 2. Cleaning assembly; 201. Second housing; 202. Upper fixing plate; 203. Lower fixing plate; 204. Brush; 2041. Hard brush; 2042. Soft brush; 205. Second inlet; 206. Second outlet; 207. Second frame;

[0028] 3. Cleaning assembly; 301. Third housing; 302. Cleaning tank; 303. Ultrasonic generator; 304. Third inlet; 305. Third outlet; 306. Third frame;

[0029] 4. Conveying assembly; 401. Roller; 4011. Annular groove; 402. Fourth bracket;

[0030] 5. Rod and wire materials. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0032] It should be noted that when a component is referred to as being "fixed" or "set" to another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected" to another component, it can be directly or indirectly connected to that other component.

[0033] It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and should not be construed as indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Please see Figure 1 This is a schematic diagram of a surface treatment device for bar wire before drawing according to an embodiment of this application. For ease of explanation, only the parts relevant to this embodiment are shown, which are described in detail below:

[0035] In one embodiment, please refer to Figure 2 , Figure 4 and Figure 6 A surface treatment device for bar wire before drawing includes a sandblasting assembly 1, a cleaning assembly 2 at the outlet end of the sandblasting assembly 1, and a washing assembly 3 at the outlet end of the cleaning assembly 2. The sandblasting assembly 1, the cleaning assembly 2, and the washing assembly 3 are connected sequentially. In use, the bar wire 5 passes through the sandblasting assembly 1, the cleaning assembly 2, and the washing assembly 3 in sequence, achieving complete cleaning of impurities such as oxide scale, residual grinding wheel particles, metal particles, and oil stains from the surface of the bar wire 5.

[0036] By setting up the sandblasting component 1, oxide scale, rust, and other impurities on the surface of the wire rod 5 can be removed. By setting up the cleaning component 2 and the washing component 3, the minute impurities on the surface of the wire rod 5 can be further removed, making the surface of the wire rod 5 smoother. After lubrication and drawing, a smooth and flawless product can be obtained, which improves the dimensional accuracy, surface quality, and appearance of the product. The sandblasting component 1, the cleaning component 2, and the washing component 3 work together to completely clean the oxide scale, residual grinding wheel particles, metal particles, oil stains, and other impurities on the surface of the wire rod 5. This allows the wire rod 5 to achieve full and uniform lubrication on the surface during the lubrication process, improving the quality of the drawing process, eliminating drawing defects, increasing the product yield, reducing the scrap rate, and reducing production costs.

[0037] In one embodiment, please refer to Figures 2-3The sandblasting assembly 1 includes a first housing 101, within which a filter cartridge 102 is housed. Several spray guns 103 are also housed within the first housing 101, surrounding the sides of the filter cartridge 102 with their openings facing the filter cartridge 102. The spray guns 103 are connected via pipes to an external storage tank containing abrasive material. When a spray gun 103 is activated, abrasive material is ejected through it, passing through the filter cartridge 102 and impacting the wire rod 5. The spray guns 103 surrounding the sides of the filter cartridge 102 enable automatic, thorough sandblasting of the wire rod 5, removing surface oxide scale, residual grinding wheel particles, and metal particles, thus improving the sandblasting effect.

[0038] In this embodiment, please refer to Figures 2-3 The spray pressure of the spray gun 103 is controlled between 0.3-0.6 MPa. This pressure range can effectively remove impurities from the surface of the wire rod 5 while avoiding excessive damage to the surface. The abrasive used is 24-80 mesh brown fused alumina. Brown fused alumina has high hardness, good toughness, and a relatively low price, and can effectively clean oxide scale, rust, etc., from the surface of the wire rod 5. Other types of abrasive can also be used, depending on the specific working conditions.

[0039] In one embodiment, please refer to Figures 2-3 The first housing 101 has a first inlet 106 and a first outlet 107 on its two sides, respectively, and both the first inlet 106 and the first outlet 107 are connected to the filter cartridge 102. The wire rod 5 enters or leaves the sandblasting assembly 1 through the first inlet 106 and the first outlet 107.

[0040] In one embodiment, please refer to Figures 2-3 An inlet sensor 104 is provided at one end of the first housing 101 near the first inlet 106, and an outlet sensor 105 is provided at one end of the first housing 101 near the first outlet 107. The spray gun 103 is controlled by the inlet sensor 104 and the outlet sensor 105 in a coordinated manner. When the bar wire 5 enters the sandblasting assembly 1 through the first inlet 106, the sandblasting assembly 1 automatically starts the sandblasting operation. When the bar wire 5 completely leaves the sandblasting assembly 1 through the first outlet 107, the sandblasting operation stops.

[0041] In one embodiment, please refer to Figures 2-3 The bottom of the first housing 101 is provided with a first frame 108 for supporting the first housing 101.

[0042] In one embodiment, please refer to Figures 4-5The cleaning assembly 2 is provided with a second housing 201, inside which is a brush 204 that completely covers the surface of the filament material 5. The brush 204 is used to clean the filament material 5. The second housing 201 provides protection and support for the brush 204 and the filament material 5, preventing external impurities from entering the cleaning assembly 2 and causing secondary contamination of the surface of the filament material 5.

[0043] For details, please refer to Figures 4-5 The second housing 201 is provided with an upper fixing plate 202 and a lower fixing plate 203. The bottom surface of the upper fixing plate 202 and the top surface of the lower fixing plate 203 are both provided with brushes 204. The brushes 204 completely cover the surface of the wire material 5, which can achieve cleaning of the wire material 5 without dead angles.

[0044] In one embodiment, please refer to Figures 4-5 The second housing 201 has a second inlet 205 and a second outlet 206 on both sides. The wire rod 5 enters or leaves the cleaning assembly 2 through the second inlet 205 and the second outlet 206.

[0045] In one embodiment, please refer to Figures 4-5 The brush 204 includes a hard brush 2041 and a soft brush 2042. The hard brush 2041 is located inside the second housing 201 near the second inlet 205, and the soft brush 2042 is located inside the second housing 201 near the second outlet 206. The hard brush 2041 can effectively handle the cleaning of larger particles on the surface of the wire rod 5 after sandblasting. The soft brush 2042 can clean the fine debris remaining on the surface of the wire rod 5 without damaging it, thus achieving a good cleaning effect. Both the hard brush 2041 and the soft brush 2042 are divided into upper and lower areas to ensure that the surface of the wire rod 5 is completely cleaned when it passes through the cleaning component 2.

[0046] In this embodiment, please refer to Figures 4-5 The hard-bristled brush 2041 uses nylon bristles, which have high wear resistance and hardness. The hardness of the hard-bristled brush 2041 is 3-4H, the bristle diameter is 0.3-0.5mm, and the length is 6-8cm. This hardness and specification of nylon bristles can effectively handle the cleaning of larger particles on the surface of the rod / wire material 5 after sandblasting. The soft-bristled brush 2042 uses PBT (polybutylene terephthalate) bristles. PBT bristles are relatively soft, with a hardness of 2-3H, a bristle diameter of 0.2-0.3mm, and a length of 7-9cm, and the bristles are dense. The PBT brush can clean away residual fine debris on the surface of the rod / wire material 5 without damaging it, thus achieving a good cleaning effect.

[0047] In one embodiment, please refer to Figures 4-5The bottom of the second housing 201 is provided with a second frame 207 for supporting the second housing 201.

[0048] In one embodiment, please refer to Figures 6-7 The cleaning assembly 3 includes a third housing 301, within which a cleaning tank 302 is located. Several ultrasonic generators 303 are mounted on the third housing 301, with their probes positioned within the cleaning tank 302. Although the wire rod 5 has been cleaned by the sandblasting assembly 1 and the cleaning assembly 2, tiny particles, oil, or other impurities may still remain on its surface. The ultrasonic cleaning by the cleaning assembly 3 more thoroughly removes these impurities, ensuring a higher level of cleanliness on the surface of the wire rod 5. This improves the adhesion of the lubricant, resulting in more uniform lubrication during subsequent drawing processes, reducing friction, and enhancing the quality of the wire rod 5. The cleaning tank 302 contains a cleaning medium (water and a suitable amount of cleaning agent). The high-frequency mechanical oscillations generated by the ultrasonic generators 303 are transmitted through the probes into the cleaning medium, creating cavitation and enhancing the cleaning ability. The wire rod 5 passes through the cleaning medium, removing surface oil and other impurities, thus achieving the cleaning purpose.

[0049] In one embodiment, please refer to Figures 6-7 The third housing 301 has a third inlet 304 and a third outlet 305 on both sides, and both the third inlet 304 and the third outlet 305 are connected to the cleaning tank 302. The rod and wire material 5 enters or leaves the cleaning assembly 3 through the third inlet 304 and the third outlet 305.

[0050] In one embodiment, please refer to Figures 6-7 The bottom of the third housing 301 is provided with a second frame 207, which is used to support the third frame 306.

[0051] In one embodiment, please refer to Figure 1 and Figure 8 It also includes a conveying component 4, which has a fourth support 402. A pair of rollers 401 are rotatably connected to the fourth support 402. The rollers 401 have annular grooves 4011, and the wire 5 is located in the annular grooves 4011 of the pair of rollers 401. When the rollers 401 rotate, the wire 5 is conveyed by the friction between the pair of rollers 401 and the wire 5.

[0052] In one embodiment, please refer to Figure 1 and Figure 8 The number of conveying components 4 is at least two, located on one or both sides of the sandblasting component 1, the cleaning component 2, or the washing component 3, depending on the specific working conditions. In this embodiment, conveying components 4 are provided on both sides of the sandblasting component 1, the cleaning component 2, and the washing component 3, which improves the conveying effect on the wire rod 5.

[0053] The following combination Figures 1-8 The working process of the surface treatment device for bar wire before drawing according to this application is described as follows:

[0054] In use, the wire rod 5 is first placed into the annular groove 4011 of the roller 401. Then, the spray gun 103, inlet sensor 104, outlet sensor 105, ultrasonic generator 303, and roller 401 are turned on. The roller 401 rotates, causing the wire rod 5 to move. When it enters the sandblasting assembly 1 through the first inlet 106, the inlet sensor 104 detects the wire rod 5 and controls the spray gun 103 to work through linkage, thus achieving sandblasting treatment of the wire rod 5. As the wire rod 5 moves, it gradually leaves the sandblasting assembly 1 through the first outlet 107. When the wire rod 5 completely leaves the sandblasting assembly 1, the outlet sensor 105 controls the spray gun 103 to stop working through linkage.

[0055] Driven by the roller 401, the filament 5 enters the cleaning assembly 2 through the second inlet 205. Under the cleaning of the hard brush 2041 and the soft brush 2042, the fine debris remaining on the surface is cleaned up. As the filament 5 moves, it gradually leaves the cleaning assembly 2 through the second outlet 206.

[0056] Driven by the roller 401, the wire 5 enters the cleaning medium of the cleaning component 3 through the third inlet 304. At this time, the ultrasonic generator 303 performs ultrasonic cleaning on the wire 5. As the wire 5 moves, it gradually leaves the cleaning component 3 through the third outlet 305. The surface treatment of the wire 5 is achieved when the wire 5 completely leaves the cleaning component 3.

[0057] After being processed by the sandblasting component 1, the cleaning component 2, and the washing component 3, the surface impurities of the bar wire 5 can be completely removed. During the lubrication process, the lubricating medium can be fully and evenly coated, ultimately improving the quality of the drawing process, eliminating drawing defects, increasing the product yield, reducing the scrap rate, and lowering production costs.

[0058] This invention provides a surface treatment device for bar and wire materials before drawing, which cleans the surface of the materials, significantly improving product quality. In terms of production efficiency, good surface treatment reduces friction during drawing, and the lubrication effect is better utilized on a smooth surface, reducing drawing force and making the drawing process smoother, thus helping to increase drawing speed and overall production efficiency. Regarding die life, impurities on the bar and wire surface are thoroughly removed, and good lubrication greatly reduces die wear during drawing. This means less die replacement frequency, reducing downtime caused by die replacement and lowering die costs. In terms of production costs, in addition to reduced die costs, high-quality products reduce scrap rates due to surface quality issues, and the high efficiency of the drawing process increases output per unit time, comprehensively reducing production costs.

[0059] In summary, this utility model provides a surface treatment device for bar wire before drawing. By incorporating a sandblasting component, it can remove oxide scale, rust, and other impurities from the surface of the bar wire. By incorporating a cleaning component and a washing component, it can further remove minute impurities from the surface of the bar wire, making the surface smoother. After lubrication and drawing, a smooth, flawless product can be obtained, improving the dimensional accuracy, surface quality, and aesthetic appearance of the product. The sandblasting, cleaning, and washing components work together to completely remove oxide scale, residual grinding wheel particles, metal particles, oil stains, and other impurities from the surface of the bar wire. This ensures that the surface of the bar wire is fully and evenly lubricated during the lubrication process, improving the drawing quality, eliminating drawing defects, increasing product yield, reducing scrap rate, and lowering production costs. This utility model has a simple structure, is easy to operate, provides good surface treatment results, improves the drawing quality, increases product yield, and reduces production costs. It is highly practical and can be widely applied in the field of metal bar wire processing technology.

[0060] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A surface treatment apparatus for bar wire before drawing, comprising a sandblasting assembly (1), characterized in that, The outlet end of the sandblasting component (1) is provided with a cleaning component (2), and the outlet end of the cleaning component (2) is provided with a washing component (3). The sandblasting component (1), the cleaning component (2) and the washing component (3) are connected in sequence.

2. The surface treatment apparatus for bar wire before drawing as described in claim 1, characterized in that, The sandblasting assembly (1) is provided with a first housing (101), a filter cartridge (102) is provided inside the first housing (101), and a plurality of spray guns (103) are provided inside the first housing (101). The spray guns (103) surround the side of the filter cartridge (102), and the opening of the spray guns (103) faces the filter cartridge (102).

3. The surface treatment apparatus for bar and wire drawing as described in claim 2, characterized in that, The first housing (101) has a first inlet (106) and a first outlet (107) on its two sides, and both the first inlet (106) and the first outlet (107) are connected to the filter cartridge (102).

4. The surface treatment apparatus for bar wire before drawing as described in claim 3, characterized in that, An inlet sensor (104) is provided at one end of the first housing (101) near the first inlet (106), and an outlet sensor (105) is provided at one end of the first housing (101) near the first outlet (107).

5. The surface treatment apparatus for bar and wire drawing as described in claim 1, characterized in that, The cleaning assembly (2) is provided with a second housing (201), and a brush (204) is provided inside the second housing (201), which completely covers the surface of the wire material (5).

6. The surface treatment apparatus for bar and wire drawing as described in claim 5, characterized in that, The second housing (201) has a second inlet (205) and a second outlet (206) on both sides respectively.

7. The surface treatment apparatus for bar and wire drawing as described in claim 6, characterized in that, The brush (204) is provided with a hard brush (2041) and a soft brush (2042). The hard brush (2041) is disposed in the second housing (201) on the side near the second inlet (205), and the soft brush (2042) is disposed in the second housing (201) on the side near the second outlet (206).

8. The surface treatment apparatus for bar and wire drawing as described in claim 1, characterized in that, The cleaning assembly (3) is provided with a third housing (301), and a cleaning tank (302) is provided inside the third housing (301). A plurality of ultrasonic generators (303) are provided on the third housing (301), and the probes of the ultrasonic generators (303) are located inside the cleaning tank (302).

9. The surface treatment apparatus for bar wire before drawing as described in claim 8, characterized in that, The third housing (301) has a third inlet (304) and a third outlet (305) on its two sides, and both the third inlet (304) and the third outlet (305) are connected to the cleaning tank (302).

10. The surface treatment apparatus for bar wire before drawing as described in claim 1, characterized in that, It also includes a conveying assembly (4), the number of which is at least two, located on one or both sides of the sandblasting assembly (1), the cleaning assembly (2) or the washing assembly (3); the conveying assembly (4) is provided with a fourth bracket (402), and a pair of rollers (401) are rotatably connected to the fourth bracket (402), the rollers (401) are provided with an annular groove (4011), and the wire (5) is located in the annular groove (4011) of the pair of rollers (401).

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