Paint spraying device for precious metal smelting rolled product

Abstract

The utility model belongs to the technical field of precious metal calendering, and particularly relates to a precious metal smelting calendered product paint spraying device which comprises a paint spraying box. A first servo motor is fixedly connected to one side wall of the paint spraying box; a first sliding groove is formed in the bottom of the inner side of the paint spraying box. A pair of sliding blocks is slidably connected to the inner side of the first sliding groove. A threaded rotating hole is formed in the side wall of the inner side of the first sliding groove; in the rotating process of the rotating drum, the precious metal block is driven to rotate along with the rotating drum, the precious metal block is adjusted to rotate to the other face needing to be sprayed, at the moment, the first servo motor is started again to drive the two-way lead screw to rotate forwards, and the adjusted precious metal block is clamped and fixed again through the clamping net; and at the moment, the paint spraying head can spray the other side of the precious metal block, so that the working steps of manually adjusting and rotating the position of the precious metal block by workers are reduced, the labor force of the workers is reduced, and the overall working efficiency of the precious metal block during paint spraying is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precious metal rolling, in particular to a paint spraying device for precious metal smelting and rolling products. Background Art

[0002] Precious metal smelting and rolled products are a kind of precious metal material obtained by smelting, refining and other processes on precious metal ores. The precious metal material can then be processed through rolling to produce various precious metal products, and the precious metal products include plates, pipes, bars, etc.

[0003] In the current existing technology, the painting device for precious metal smelting rolled products is mainly composed of components such as a paint spray box, a nozzle, a feed pipe, and a fixing assembly. Through the coordinated cooperation of these components, the surface of the precious metal block can be sprayed with paint to form a protective film on the surface of the precious metal block, which can enhance the corrosion resistance of the precious metal block and extend the service life of the precious metal block.

[0004] In the existing precious metal smelting and rolling product painting device, when the precious metal block surface is being painted, the precious metal block needs to be fixed on a workbench before the painting work is carried out. After the painting of one side of the precious metal block is completed, the staff needs to manually loosen the fastening device and rotate the precious metal block to the other side that needs to be painted. The precious metal block after rotation is clamped and fixed by rotating the fastening device before the other side of the precious metal block can be painted. The operation is relatively troublesome, which increases the labor of the staff and reduces the overall work efficiency of the precious metal block when painting. Therefore, a precious metal smelting and rolling product painting device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the utility model proposes a painting device for precious metal smelting and rolling products.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a precious metal smelting rolled product painting device described in the utility model comprises a paint spraying box; a first servo motor is fixedly connected to one side wall of the paint spraying box; a first slide groove is provided at the inner bottom of the paint spraying box; a pair of sliders are slidably connected inside the first slide groove; a threaded hole is provided on the inner side wall of the first slide groove; a bidirectional screw rod is rotatably connected inside the threaded hole; the output end of the first servo motor is connected to the bidirectional screw rod; the slider and the bidirectional screw rod are threadedly connected; the top of the slider is fixedly connected to a clamping net; the inner bottom of the paint spraying box is fixedly connected to a second servo motor; the output end of the second servo motor is fixedly connected to a first gear; a mounting plate is provided at the inner bottom of the paint spraying box; a rotating drum is slidably connected inside the mounting plate; a gear ring is fixedly connected to the outer wall of the rotating drum; the first gear and the gear ring are meshed with each other; a fixing plate is fixedly connected to the top of the rotating drum; a precious metal block is provided on the top of the fixing plate; and a plurality of groups of paint spraying heads are provided on the inner side wall of the paint spraying box.

[0007] Preferably, a protective cover is slidably connected to the top of the paint spray box; a hot air blower is fixedly connected to the top of the protective cover; a connecting pipe is connected to the top of the protective cover; one end of the connecting pipe is interconnected with the hot air blower; a pair of second slide grooves are opened on the inner side wall of the paint spray box; spring columns are fixedly connected to the bottom of the inner sides of the second slide grooves; sliding columns are slidably connected to the inner sides of the second slide grooves; the tops of the spring columns are interconnected with the sliding columns; one ends of the sliding columns are interconnected with the protective cover; a third servo motor is fixedly connected to the inner side wall of the paint spray box; a second gear is fixedly connected to the output end of the third servo motor; a plurality of groups of teeth are fixedly connected to the side wall of the protective cover close to the third servo motor; the second gear is meshed with the teeth.

[0008] Preferably, a pair of filter boxes are fixedly connected to the top of the paint spray box; an air intake pipe is connected to one side wall of the filter box; an air intake pump is fixedly connected to one end of the air intake pipe away from the filter box; an air intake port is provided at the bottom of the air intake pump; one end of the air intake port is connected to the inside of the paint spray box, and the top of the filter box is connected to an exhaust port.

[0009] Preferably, a pair of guide columns are fixedly connected to the inner bottom of the paint spray box; the top of the guide column is interconnected with the inner top of the paint spray box; the outer wall of the guide column is slidably connected with a mounting block; one end of the mounting block is interconnected with the outer wall of the protective cover.

[0010] Preferably, an inner groove is formed on the outer wall of the sliding block; a pair of fitting rotating posts are rotatably connected to the inner side of the inner groove; and the outer wall of the fitting rotating post fits with the inner wall of the first sliding groove.

[0011] Preferably, a support frame is sleeved on the outer side wall of the suction pump; one end of the support frame is interconnected with the outer side wall of the paint spray box.

[0012] Preferably, a cleaning brush is fixedly connected to the inner bottom of the paint spray box.

[0013] The utility model is beneficial in that:

[0014] 1. The utility model describes a precious metal smelting rolled product painting device. When one side of the precious metal block is painted, the first servo motor is started to drive the bidirectional screw to reverse. At this time, a pair of clamping nets move away from one end of the precious metal block, so that the clamping nets no longer clamp and fix the precious metal block. The second servo motor can be started to drive the first gear to drive the gear ring and the rotating drum to rotate together. Because the fixed plate and the rotating drum are connected to each other, and the precious metal block is arranged on the surface of the fixed plate, during the rotation of the rotating drum, the precious metal block is driven to follow the rotation, and the precious metal block is adjusted to rotate to the other side to be sprayed. At this time, the first servo motor is started again to drive the bidirectional screw to rotate forward, so that the clamping net clamps and fixes the precious metal block after adjustment again. At this time, the paint head can spray the other side of the precious metal block, thereby reducing the working steps of the staff when manually adjusting the rotating position of the precious metal block, and reducing the labor of the staff, thereby improving the overall work efficiency of the precious metal block when spraying paint.

[0015] 2. The utility model describes a precious metal smelting rolled product painting device. When the painting work on the surface of the precious metal block is completed, the third servo motor is started to drive the second gear to rotate. Since the second gear is meshed with the teeth, and the teeth are connected to the protective cover, during the rotation of the second gear, the second slide groove, the spring column and the slide column cooperate with each other, so that the teeth and the protective cover can be driven to move downward together. When the bottom of the protective cover moves to fit with the bottom of the inner side of the paint spray box, the hot air blower is started. The hot air generated by the hot air blower when working is transported to the inside of the protective cover through the connecting pipe. The heat provided by the hot air can make the paint solvent on the surface of the precious metal block solidify quickly, thereby improving the overall efficiency of the solvent solidification after the painting of the precious metal block is completed, so that the precious metal block after painting can enter the next production link faster, thereby improving the overall production efficiency of the precious metal block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model 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, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a three-dimensional diagram of the paint spray box in the utility model;

[0018] Figure 2 It is a three-dimensional diagram of the protective cover in the utility model;

[0019] Figure 3 It is a three-dimensional diagram of the clamping net in the utility model;

[0020] Figure 4 A three-dimensional diagram of the teeth of the present invention;

[0021] Figure 5 It is a three-dimensional diagram of the gear ring in the utility model.

[0022] In the figure: 1. paint spray box; 11. first servo motor; 12. first slide; 13. slider; 14. threaded hole; 15. bidirectional screw; 16. clamping net; 17. second servo motor; 18. first gear; 19. mounting plate; 110. rotating drum; 111. gear ring; 112. fixing plate; 113. precious metal block; 114. paint spray head; 2. protective cover; 21. hot air blower; 22. connecting pipe; 23. second slide; 24. spring column; 25. slide column; 26. third servo motor; 27. second gear; 28. teeth; 3. filter box; 31. suction pipe; 32. suction pump; 33. suction port; 34. exhaust port; 4. guide column; 41. mounting block; 5. inner groove; 51. fitting rotating column; 6. support frame; 7. cleaning brush. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a precious metal smelting rolled product painting device comprises a paint spraying box 1; a first servo motor 11 is fixedly connected to one side wall of the paint spraying box 1; a first slide groove 12 is provided at the inner bottom of the paint spraying box 1; a pair of sliders 13 are slidably connected to the inner side of the first slide groove 12; a threaded hole 14 is provided at the inner side wall of the first slide groove 12; a bidirectional screw rod 15 is rotatably connected to the inner side of the threaded hole 14; the output end of the first servo motor 11 is connected to the bidirectional screw rod 15; the slider 13 and the bidirectional screw rod 15 are threadedly connected; the top of the slider 13 is fixedly connected to a clamping net 16; a second servo motor 17 is fixedly connected to the inner bottom of the paint spraying box 1; the output end of the second servo motor 17 is fixedly connected to the There is a first gear 18; a mounting plate 19 is provided at the bottom of the inner side of the paint spray box 1; a rotating drum 110 is slidably connected to the inner side of the mounting plate 19; a gear ring 111 is fixedly connected to the outer wall of the rotating drum 110; the first gear 18 and the gear ring 111 are meshed with each other; a fixing plate 112 is fixedly connected to the top of the rotating drum 110; a precious metal block 113 is provided on the top of the fixing plate 112; a plurality of groups of paint spray heads 114 are provided on the inner side wall of the paint spray box 1; during operation: when it is necessary to spray paint on the surface of the precious metal block 113, the first servo motor 11 is started to drive the bidirectional screw rod 15 to rotate inside the threaded rotating hole 14, because the slider 13 and the bidirectional screw rod 15 are threadedly connected, the slider 13 and the clamping net 16 are connected to each other, that is, the bidirectional During the rotation of the lead screw 15, the slider 13 and the clamping net 16 are moved toward one side of the precious metal block 113. When the clamping net 16 moves to fit the surface of the precious metal block 113, the precious metal block 113 can be clamped and fixed. At this time, the paint spraying head 114 can spray paint on the surface of the precious metal block 113. When the paint spraying on one side of the precious metal block 113 is completed, the first servo motor 11 is started to drive the bidirectional lead screw 15 to reverse. At this time, a pair of clamping nets 16 move away from one end of the precious metal block 113, so that the clamping nets 16 no longer clamp and fix the precious metal block 113. Then, the second servo motor 17 can be started to drive the first gear 18 to drive the gear ring 111 and the rotating drum 110 to rotate together. The plate 112 is connected to the rotating drum 110, and the precious metal block 113 is arranged on the surface of the fixed plate 112. During the rotation of the rotating drum 110, the precious metal block 113 is driven to rotate with it, and the precious metal block 113 is adjusted to rotate to the other side that needs to be sprayed. At this time, the first servo motor 11 is started again to drive the bidirectional screw rod 15 to rotate forward, so that the clamping net 16 clamps and fixes the precious metal block 113 after adjustment again. At this time, the paint spray head 114 can spray the other side of the precious metal block 113, thereby reducing the working steps of the staff when manually adjusting the rotating position of the precious metal block 113, and reducing the labor of the staff, thereby improving the overall work efficiency of the precious metal block 113 when spraying paint.

[0025] like Figure 1 , Figure 2 , Figure 3and Figure 4 As shown, the top of the paint spray box 1 is slidably connected with a protective cover 2; a hot air blower 21 is fixedly connected to the top of the protective cover 2; a connecting pipe 22 is connected to the top of the protective cover 2; one end of the connecting pipe 22 is interconnected with the hot air blower 21; a pair of second slide grooves 23 are provided on the inner side wall of the paint spray box 1; spring columns 24 are fixedly connected to the inner bottom of the second slide grooves 23; slide columns 25 are slidably connected to the inner sides of the second slide grooves 23; the top of the spring column 24 is interconnected with the slide column 25; one end of the slide column 25 is interconnected with the protective cover 2; a third servo motor 26 is fixedly connected to the inner side wall of the paint spray box 1; a second gear 27 is fixedly connected to the output end of the third servo motor 26; a plurality of groups of teeth 28 are fixedly connected to the side wall of the protective cover 2 close to the third servo motor 26; the second gear 27 and the teeth 28 are meshed with each other; when working: when the surface of the precious metal block 113 is sprayed After the painting work is completed, the third servo motor 26 is started to drive the second gear 27 to rotate. Since the second gear 27 is meshed with the teeth 28, and the teeth 28 are connected to the protective cover 2, during the rotation of the second gear 27, the second slide groove 23, the spring column 24 and the slide column 25 cooperate with each other, so that the teeth 28 and the protective cover 2 can be driven to move downward together. When the bottom of the protective cover 2 moves to fit with the bottom of the inner side of the paint spraying box 1, the hot air blower 21 is started. The hot air generated by the hot air blower 21 when working is transported to the inside of the protective cover 2 through the connecting pipe 22. The heat provided by the hot air can make the paint solvent on the surface of the precious metal block 113 solidify quickly, thereby improving the overall efficiency of the solvent solidification after the precious metal block 113 is sprayed with paint, so that the precious metal block after spraying paint can enter the next production link faster, thereby improving the overall production efficiency of the precious metal block 113.

[0026] like Figure 1 As shown, a pair of filter boxes 3 are fixedly connected to the top of the paint spray box 1; an air intake pipe 31 is connected to one side wall of the filter box 3; an air intake pump 32 is fixedly connected to one end of the air intake pipe 31 away from the filter box 3; an air intake port 33 is provided at the bottom of the air intake pump 32; one end of the air intake port 33 is connected to the inside of the paint spray box 1, and the top of the filter box 3 is connected to an exhaust port 34; during operation: when the surface of the precious metal block 113 is being painted, the air intake pump 32 is started, so that the harmful gas generated when the surface of the precious metal block 113 is painted is sucked into the filter box 3 through the air intake port 33 and the air intake pipe 31. By directly sucking the harmful gas into the filter box 3, the environmental quality of the paint spraying work area can be significantly improved, thereby improving the overall safety of the staff at work; finally, after the harmful gas in the filter box 3 is filtered, it can be directly discharged to the outside through the exhaust port 34.

[0027] like Figure 1As shown, a pair of guide columns 4 are fixedly connected to the bottom of the inner side of the paint spray box 1; the top of the guide column 4 is interconnected with the top of the inner side of the paint spray box 1; the outer wall of the guide column 4 is slidably connected with a mounting block 41; one end of the mounting block 41 is interconnected with the outer wall of the protective cover 2; during operation: because the mounting block 41 is interconnected with the protective cover 2, during the downward movement of the protective cover 2, the stability of the protective cover 2 during the downward movement is improved through the cooperation between the guide column 4 and the mounting block 41, and at the same time, the overall stability of the protective cover 2 when working on the upper side for a long time can be improved by setting the guide column 4 and the mounting block 41.

[0028] like Figure 3 As shown, the outer wall of the slider 13 is provided with an inner groove 5; a pair of fitting rotating posts 51 are rotatably connected to the inner side of the inner groove 5; the outer wall of the fitting rotating post 51 fits with the inner wall of the first slide groove 12; during operation: when the slider 13 moves back and forth inside the first slide groove 12, the fitting rotating post 51 follows the rotation, and the fitting rotating post 51 reduces the friction between the outer wall of the slider 13 and the inner wall of the first slide groove 12 for a long time, resulting in more serious wear on the surface of the slider 13, thereby improving the working life of the slider 13.

[0029] like Figure 1 As shown, a support frame 6 is provided on the outer wall of the air suction pump 32; one end of the support frame 6 is interconnected with the outer wall of the paint spray box 1; when working: by setting the support frame 6 on the outside of the air suction pump 32, the air suction pump 32 that works for a long time can be supported and protected, thereby improving the overall stability of the air suction pump 32 when working for a long time.

[0030] like Figure 5 As shown, a cleaning brush 7 is fixedly connected to the bottom of the inner side of the paint spray box 1; during operation: when the first gear 18 and the gear ring 111 cooperate with each other to rotate, the cleaning brush 7 can clean the dust and impurities adhered to the surfaces of the first gear 18 and the gear ring 111, thereby improving the cleanliness of the surfaces of the first gear 18 and the gear ring 111.

[0031] Working principle: when it is necessary to spray paint the surface of the precious metal block 113, start the first servo motor 11 to drive the bidirectional screw 15 to rotate inside the threaded hole 14. Since the slider 13 and the bidirectional screw 15 are threadedly connected, the slider 13 and the clamping net 16 are connected to each other, that is, during the rotation of the bidirectional screw 15, the slider 13 and the clamping net 16 are moved to one side of the precious metal block 113. When the clamping net 16 moves to fit the surface of the precious metal block 113, the precious metal block 113 can be clamped and fixed. At this time, the paint spray head 114 can spray paint on the surface of the precious metal block 113. When the painting of one side of the precious metal block 113 is completed, start the first servo motor 11 to drive the bidirectional screw 15 to reverse. At this time, a pair of clamping nets 16 The first servo motor 110 is moved away from one end of the precious metal block 113 so that the clamping net 16 no longer clamps and fixes the precious metal block 113, and the second servo motor 17 is started to drive the first gear 18 to drive the gear ring 111 and the rotating drum 110 to rotate together. Since the fixed plate 112 and the rotating drum 110 are connected to each other, and the precious metal block 113 is arranged on the surface of the fixed plate 112, during the rotation of the rotating drum 110, the precious metal block 113 is driven to rotate with it, and the precious metal block 113 is adjusted to rotate to the other side to be sprayed. At this time, the first servo motor 11 is started again to drive the bidirectional screw rod 15 to rotate forward, so that the clamping net 16 clamps and fixes the precious metal block 113 after adjustment again, and the spray head 114 can spray the other side of the precious metal block 113. The operation is performed, thereby reducing the number of working steps when the staff manually adjusts the position of the rotating precious metal block 113, and reducing the labor of the staff, thereby improving the overall work efficiency of the precious metal block 113 during painting; when the painting work on the surface of the precious metal block 113 is completed, the third servo motor 26 is started to drive the second gear 27 to rotate. Since the second gear 27 is meshed with the teeth 28, and the teeth 28 are connected to the protective cover 2, during the rotation of the second gear 27, the second slide groove 23, the spring column 24 and the slide column 25 cooperate with each other, and the teeth 28 and the protective cover 2 can be driven to move downward together. When the bottom of the protective cover 2 moves to fit the bottom of the inner side of the paint spray box 1, the hot air blower 21 is started, and the hot air generated by the hot air blower 21 when working The heat provided by the hot air is transported to the inside of the protective cover 2 through the connecting pipe 22, and the paint solvent on the surface of the precious metal block 113 can be quickly solidified, thereby improving the overall efficiency of the solvent solidification after the precious metal block 113 is sprayed with paint, so that the precious metal block after the painting is completed can enter the next production link faster, thereby improving the overall production efficiency of the precious metal block 113; when the precious metal block 113 is sprayed with paint, the suction pump 32 is started, so that the harmful gas generated when the precious metal block 113 is sprayed with paint on the surface is sucked into the filter box 3 through the suction port 33 and the suction pipe 31. By directly sucking the harmful gas into the filter box 3, the environmental quality of the spraying work area can be significantly improved, thereby improving the overall safety of the staff at work;Finally, after the harmful gases inside the filter box 3 are filtered, they can be directly discharged to the outside through the exhaust port 34; because the mounting block 41 is connected to the protective cover 2, during the downward movement of the protective cover 2, the stability of the protective cover 2 during the downward movement is improved through the cooperation between the guide column 4 and the mounting block 41. At the same time, the overall stability of the protective cover 2 when working at the top for a long time can be improved by setting the guide column 4 and the mounting block 41; during the movement of the slider 13 back and forth inside the first slide groove 12, the fitting rotating column 51 rotates with it, and the fitting rotating column 51 reduces the outer wall of the slider 13 from rotating for a long time. The sliding block 13 is rubbed against the inner wall of the first slide groove 12, resulting in serious wear on the surface of the sliding block 13, thereby improving the service life of the sliding block 13; the support frame 6 arranged outside the air pump 32 can achieve the effect of supporting and protecting the air pump 32 during long-term work, thereby improving the overall stability of the air pump 32 during long-term work; during the mutual rotation of the first gear 18 and the gear ring 111, the cleaning brush 7 can clean the dust and impurities adhered to the surface of the first gear 18 and the gear ring 111, thereby improving the cleanliness of the surface of the first gear 18 and the gear ring 111. ;

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A precious metal smelting rolled product painting device, comprising a paint spraying box (1); characterized in that: A first servo motor (11) is fixedly connected to one side wall of the paint spray box (1); a first slide groove (12) is provided at the bottom of the inner side of the paint spray box (1); a pair of sliders (13) are slidably connected to the inner side of the first slide groove (12); a threaded hole (14) is provided on the inner side wall of the first slide groove (12); a bidirectional screw rod (15) is rotatably connected to the inner side of the threaded hole (14); an output end of the first servo motor (11) and the bidirectional screw rod (15) are mutually connected; the sliders (13) and the bidirectional screw rod (15) are threadedly connected; a clamping net (16) is fixedly connected to the top of each slider (13); the paint spray box (11) 1) A second servo motor (17) is fixedly connected to the inner bottom; a first gear (18) is fixedly connected to the output end of the second servo motor (17); a mounting plate (19) is provided at the inner bottom of the paint spray box (1); a rotating drum (110) is slidably connected to the inner side of the mounting plate (19); a gear ring (111) is fixedly connected to the outer wall of the rotating drum (110); the first gear (18) and the gear ring (111) are meshed with each other; a fixing plate (112) is fixedly connected to the top of the rotating drum (110); a precious metal block (113) is provided at the top of the fixing plate (112); and a plurality of groups of paint spray heads (114) are provided on the inner wall of the paint spray box (1).

2. A precious metal smelting rolled product painting device according to claim 1, characterized in that: The top of the paint spray box (1) is slidably connected to a protective cover (2); the top of the protective cover (2) is fixedly connected to a hot air blower (21); the top of the protective cover (2) is connected to a connecting pipe (22); one end of the connecting pipe (22) is connected to the hot air blower (21); a pair of second slide grooves (23) are provided on the inner side wall of the paint spray box (1); the inner bottom of the second slide grooves (23) are fixedly connected to spring columns (24); the inner sides of the second slide grooves (23) are slidably connected to slide columns ( 25); the top of the spring column (24) is connected to the sliding column (25); one end of the sliding column (25) is connected to the protective cover (2); a third servo motor (26) is fixedly connected to the inner side wall of the paint spray box (1); a second gear (27) is fixedly connected to the output end of the third servo motor (26); a plurality of groups of teeth (28) are fixedly connected to the side wall of the protective cover (2) close to the third servo motor (26); and the second gear (27) and the teeth (28) are meshed with each other.

3. A precious metal smelting rolled product painting device according to claim 1, characterized in that: A pair of filter boxes (3) are fixedly connected to the top of the paint spray box (1); a side wall of the filter box (3) is connected to an air suction pipe (31); an end of the air suction pipe (31) away from the filter box (3) is fixedly connected to an air suction pump (32); an air suction port (33) is provided at the bottom of the air suction pump (32); one end of the air suction port (33) is connected to the interior of the paint spray box (1), and the top of the filter box (3) is connected to an exhaust port (34).

4. A precious metal smelting rolled product painting device according to claim 2, characterized in that: A pair of guide columns (4) are fixedly connected to the inner bottom of the paint spray box (1); the top ends of the guide columns (4) are mutually connected to the inner top of the paint spray box (1); the outer side walls of the guide columns (4) are slidably connected to a mounting block (41); one end of the mounting block (41) is mutually connected to the outer side wall of the protective cover (2).

5. A precious metal smelting rolled product painting device according to claim 1, characterized in that: An inner groove (5) is formed on the outer wall of the sliding block (13); a pair of fitting rotating posts (51) are rotatably connected to the inner side of the inner groove (5); and the outer wall of the fitting rotating posts (51) fits with the inner wall of the first sliding groove (12).

6. A precious metal smelting rolled product painting device according to claim 3, characterized in that: A support frame (6) is sleeved on the outer side wall of the air suction pump (32); one end of the support frame (6) is connected to the outer side wall of the paint spray box (1).

7. A precious metal smelting rolled product painting device according to claim 1, characterized in that: A cleaning brush (7) is fixedly connected to the inner bottom of the paint spray box (1).

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