Laser cladding coaxial double-path powder feeding device

Abstract

The utility model discloses a laser cladding coaxial double-path powder feeding device, which relates to the technical field of laser cladding, and comprises a laser cladding assembly, the symmetrical positions of the outer wall of the laser cladding assembly are fixedly connected with connecting plates; the outer wall, away from the laser cladding assembly, of the connecting plate is fixedly connected with an air pump, and the outer wall, close to the air pump, of the connecting plate is fixedly connected with a powder box. According to the powder feeding device, the effect that the powder feeding head can be detached is achieved through the fixing assembly, the feeding pipe can be taken down from the adjusting mechanism by eliminating limitation of the fixing assembly on the feeding pipe, then the feeding pipe can be maintained or replaced, the feeding pipe can be fixed again after maintenance or replacement is completed, and after fixing, the powder feeding head can be detached. And the feeding pipe can be adjusted through the adjusting mechanism, so that the feeding pipe is restored to the position before disassembly, and disassembly and assembly of the feeding pipe are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of laser cladding technology, specifically a coaxial dual-path powder feeding device for laser cladding. Background Technology

[0002] Laser cladding is a novel surface modification technology. It involves adding cladding material to the substrate surface and using a high-energy-density laser beam to fuse it together with a thin layer on the substrate surface, forming a metallurgically bonded cladding layer. This layer offers advantages such as strong adhesion and reliable performance, significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance, and electrical properties of the substrate material, thereby achieving surface modification or repair. During laser cladding operation, a powder feeding device is needed to continuously add material into the laser beam to achieve the cladding effect. However, the powder feeding device is prone to blockage at the discharge port, leading to powder interruption. Furthermore, disassembling, replacing, or maintaining the powder feeding head is inconvenient, reducing the device's practicality.

[0003] For example, the patent with authorization announcement number CN221440877U describes a synchronous powder feeding device for high-speed laser cladding. By loosening the limiting pin bolt, one end of the limiting pin bolt is separated from the outer surface of the vertical connecting cylinder. Then, the lifting ring can be moved up or down. After the lifting ring moves to the appropriate position, the limiting pin bolt is tightened. Since the middle part of the feeding cylinder is movably connected to the lifting ring through the connecting diagonal rod, when the lifting ring moves up and down, the tilt angle of the feeding cylinder can be changed through the connecting diagonal rod, thereby adjusting the feeding direction of the feeding cylinder and improving the powder feeding effect. However, during the powder feeding process, the feeding port is prone to problems, resulting in powder breakage, which affects the cladding work. In addition, it is inconvenient to disassemble and replace the powder feeding head, reducing the practicality of the device.

[0004] Based on this, a coaxial dual-path powder feeding device for laser cladding is provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a coaxial dual-path powder feeding device for laser cladding to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A coaxial dual-path powder feeding device for laser cladding includes a laser cladding assembly. Connecting plates are fixedly connected to symmetrical positions on the outer wall of the laser cladding assembly. An air pump is fixedly connected to the outer wall of the connecting plates away from the laser cladding assembly. A powder box is fixedly connected to the outer wall of the connecting plates near the air pump. An air supply pipe is fixedly connected to the output end of the air pump. A feeding pipe is fixedly connected to the outer wall of the air supply pipe away from the connecting plates. A discharge pipe is fixedly connected to the bottom end of the powder box. The outer wall of the discharge pipe is fixedly connected to the inner wall of the connecting plates. A powder feeding hose is fixedly connected to the bottom end of the discharge pipe. The outer wall of the powder feeding hose away from the discharge pipe is fixedly connected to the outer wall of the feeding pipe. A valve is provided in the inner cavity of the discharge pipe near the powder feeding hose. An adjusting mechanism is provided on the outer wall of the laser cladding assembly. A fixing component is provided on the outer wall of the feeding pipe. A powder feeding mechanism is provided in the inner cavity of the powder box.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] Preferably, the adjustment mechanism includes a movable ring, the inner wall of which is slidably connected to the outer wall of the laser cladding assembly, a guide block is fixedly connected to the inner wall of the movable ring, the outer wall of the guide block is slidably connected to a groove opened on the outer wall of the laser cladding assembly, and a movable rod is rotatably connected to the outer wall of the movable ring near the connecting plate.

[0010] Preferably, the fixing assembly includes two first connecting blocks and two second connecting blocks. The outer walls of the first connecting blocks overlap with the outer walls of the second connecting blocks. The outer wall of the upper second connecting block is rotatably connected to the outer wall of the movable rod, and the outer wall of the lower second connecting block is rotatably connected to the outer wall of the fixing ring. A limiting rod is inserted into the inner wall of the first connecting block. The outer wall of the limiting rod is inserted into the inner wall of the second connecting block. A plug is inserted into the limiting rod near the inner wall of the second connecting block. A slider is fixedly connected to the plug near the outer wall of the second connecting block. The outer wall of the slider is slidably connected to the inner wall of the second connecting block. A sliding rod is slidably connected to the inner wall of the slider. The outer wall of the sliding rod is fixedly connected to the inner cavity of the second connecting block. A spring is sleeved on the outer wall of the sliding rod. One end of the spring is fixedly connected to the inner cavity of the second connecting block, and the other end is fixedly connected to the outer wall of the slider.

[0011] Preferably, the powder feeding mechanism includes a motor, the outer wall of which is fixedly connected to the outer wall of the powder box. A rotating rod is fixedly connected to the output end of the motor through the outer wall of the powder box. A protective cover is rotatably connected to the outer wall of the rotating rod. The outer wall of the protective cover is fixedly connected to the inner cavity of the powder box. A mounting box is fixedly connected to the outer wall of the protective cover near the discharge pipe. The outer wall of the mounting box is fixedly connected to the inner cavity of the powder box. A driving bevel gear is fixedly connected to the outer wall of the rotating rod through the outer wall of the mounting box. A driven bevel gear meshes with the outer wall of the driving bevel gear. A rotating shaft is fixedly connected to the axis of the driven bevel gear. The outer wall of the rotating shaft is rotatably connected to the inner wall of the mounting box. A stirring blade is fixedly connected to the outer wall of the rotating shaft.

[0012] Preferably, the outer wall of the movable ring has a through hole, and a pin bolt is provided in the through hole, and the outer wall of the pin bolt is threadedly connected to the inner wall of the guide block.

[0013] Preferably, the inner walls of the first connecting block and the second connecting block are both fixedly connected to positioning blocks, and the outer wall of the positioning blocks is inserted into the inner wall of the feeding pipe.

[0014] Preferably, the outer wall of the second connecting block is provided with a groove that matches the shape of the slider, and the effective stroke of the slider in the groove is greater than the length of the insertion rod inserted into the inner wall of the limiting rod.

[0015] Preferably, the stirring blades are spiral-shaped.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model achieves the effect of avoiding blockage of the feed port through the powder feeding mechanism. The motor in the powder feeding mechanism drives the rotating rod to rotate the stirring blade. The stirring blade conveys the powder in the feed pipe downward, so that the powder enters the powder conveying hose and avoids the powder from staying in the feed pipe and causing blockage.

[0018] 2. This utility model achieves the effect of disassembling the powder feeding head by using a fixing component. By removing the restriction of the feeding tube by the fixing component, the feeding tube can be removed from the adjustment mechanism, and then the feeding tube can be maintained or replaced. After maintenance or replacement, the feeding tube can be fixed again. After fixing, the feeding tube can be adjusted by the adjustment mechanism to restore the feeding tube to the position before disassembly, thus facilitating the disassembly and installation of the feeding tube. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the fixing component of this utility model.

[0022] Figure 4 This is a schematic diagram of the powder feeding mechanism of this utility model.

[0023] Figure reference numerals: 1. Laser cladding assembly; 11. Connecting plate; 12. Air pump; 13. Air supply pipe; 14. Feeding pipe; 15. Fixing ring; 16. Powder box; 17. Discharge pipe; 18. Powder conveying hose; 2. Adjusting mechanism; 21. Movable ring; 22. Guide block; 23. Pin bolt; 24. Movable rod; 3. Fixing assembly; 31. First connecting block; 32. Second connecting block; 33. Positioning block; 34. Limiting rod; 35. Insert rod; 36. Slider; 37. Sliding rod; 38. Spring; 4. Powder feeding mechanism; 41. Motor; 42. Rotating rod; 43. Protective cover; 44. Mounting box; 45. Active bevel gear; 46. Driven bevel gear; 47. Rotating shaft; 48. Stirring blade. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] In one embodiment, such as Figures 1-4 As shown, a coaxial dual-path powder feeding device for laser cladding includes a laser cladding assembly 1. Connecting plates 11 are fixedly connected to symmetrical positions on the outer wall of the laser cladding assembly 1. An air pump 12 is fixedly connected to the connecting plates 11 away from the outer wall of the laser cladding assembly 1. A powder box 16 is fixedly connected to the outer wall of the connecting plates 11 near the air pump 12. An air delivery pipe 13 is fixedly connected to the output end of the air pump 12. A feeding pipe 14 is fixedly connected to the air delivery pipe 13 away from the outer wall of the connecting plates 11. The bottom of the powder box 16... The end of the feed pipe 17 is fixedly connected to the feed pipe 17. The outer wall of the feed pipe 17 is fixedly connected to the inner wall of the connecting plate 11. The bottom end of the feed pipe 17 is fixedly connected to the powder conveying hose 18. The outer wall of the powder conveying hose 18 away from the feed pipe 17 is fixedly connected to the outer wall of the feeding pipe 14. A valve is provided in the inner cavity of the feed pipe 17 near the powder conveying hose 18. An adjustment mechanism 2 is provided on the outer wall of the laser cladding assembly 1. A fixing assembly 3 is provided on the outer wall of the feeding pipe 14. A powder feeding mechanism 4 is provided in the inner cavity of the powder box 16.

[0026] In this embodiment, the angle of the feeding pipe 14 can be adjusted by the adjustment mechanism 2 to make the powder feeding angle of the feeding pipe 14 better. Then, the powder feeding mechanism 4 can clear the powder in the discharge pipe 17 to avoid the powder blockage in the discharge pipe 17 and the powder interruption. Subsequently, the feeding pipe 14 can be quickly disassembled by the fixing component 3 to facilitate the replacement or maintenance of the feeding pipe 14.

[0027] In an optional embodiment, such as Figure 2 As shown, the adjustment mechanism 2 includes a movable ring 21. The inner wall of the movable ring 21 is slidably connected to the outer wall of the laser cladding assembly 1. A guide block 22 is fixedly connected to the inner wall of the movable ring 21. The outer wall of the guide block 22 is slidably connected to a groove opened on the outer wall of the laser cladding assembly 1. A movable rod 24 is rotatably connected to the movable ring 21 near the outer wall of the connecting plate 11. By rotating the pin bolt 23, the pin bolt 23 is no longer pressed against the outer wall of the laser cladding assembly 1. Then, the movable ring 21 can be pulled to slide on the outer wall of the laser cladding assembly 1. The movable ring 21 drives the guide block 22 to slide synchronously on the inner wall of the laser cladding assembly 1, thereby driving the movable rod 24 to move synchronously. The movable rod 24 drives the feeding tube 14 to rotate, thereby changing the angle of the feeding tube 14 and making the powder feeding angle of the feeding tube 14 better.

[0028] In an optional embodiment, such as Figure 2 and Figure 3 As shown, the fixing component 3 includes two first connecting blocks 31 and two second connecting blocks 32. The outer walls of the first connecting blocks 31 overlap with the outer walls of the second connecting blocks 32. The outer wall of the upper second connecting block 32 is rotatably connected to the outer wall of the movable rod 24, and the outer wall of the lower second connecting block 32 is rotatably connected to the outer wall of the fixing ring 15. A limiting rod 34 is inserted into the inner wall of the first connecting block 31. The outer wall of the limiting rod 34 is inserted into the inner wall of the second connecting block 32. A plug rod 35 is inserted into the limiting rod 34 near the inner wall of the second connecting block 32. A slider 36 is fixedly connected to the plug rod 35 near the outer wall of the second connecting block 32. The outer wall of the slider 36 is slidably connected to the inner wall of the second connecting block 32. A sliding ring 36 is slidably connected to the inner wall of the slider 36. The slide rod 37 has its outer wall fixedly connected to the inner cavity of the second connecting block 32. A spring 38 is sleeved on the outer wall of the slide rod 37. One end of the spring 38 is fixedly connected to the inner cavity of the second connecting block 32, and the other end is fixedly connected to the outer wall of the slider 36. Pulling the insertion rod 35 causes the insertion rod 35 to drive the slider 36 to slide synchronously on the outer wall of the slide rod 37, causing the spring 38 to contract. This prevents the outer wall of the insertion rod 35 from being inserted into the inner wall of the limiting rod 34. Then, the limiting rod 34 can be pulled to prevent it from being inserted into the first connecting block 31 and the second connecting block 32. After that, the first connecting block 31 and the second connecting block 32 can be separated, and the feeding tube 14 is no longer restricted. Then, the feeding tube 14 can be disassembled and replaced.

[0029] In an optional embodiment, such as Figure 2 and Figure 4As shown, the powder feeding mechanism 4 includes a motor 41. The outer wall of the motor 41 is fixedly connected to the outer wall of the powder box 16. A rotating rod 42 is fixedly connected to the output end of the motor 41 through the outer wall of the powder box 16. A protective cover 43 is rotatably connected to the outer wall of the rotating rod 42. The outer wall of the protective cover 43 is fixedly connected to the inner cavity of the powder box 16. A mounting box 44 is fixedly connected to the outer wall of the protective cover 43 near the discharge pipe 17. The outer wall of the mounting box 44 is fixedly connected to the inner cavity of the powder box 16. An active bevel gear 45 is fixedly connected to the outer wall of the rotating rod 42 through the outer wall of the mounting box 44. The outer wall of the active bevel tooth 45 is engaged with the driven bevel tooth 46. A rotating shaft 47 is fixedly connected to the axis of the driven bevel tooth 46. The outer wall of the rotating shaft 47 is rotatably connected to the inner wall of the mounting box 44. A stirring blade 48 is fixedly connected to the outer wall of the rotating shaft 47. When the motor 41 is started, it drives the rotating rod 42 and the active bevel tooth 45 to rotate, so that the active bevel tooth 45 and the driven bevel tooth 46 are engaged, thereby driving the rotating shaft 47 to rotate. The rotating shaft 47 drives the stirring blade 48 to rotate, thus conveying the powder in the feed pipe 17 and preventing the powder in the feed pipe 17 from accumulating and causing blockage.

[0030] In an optional embodiment, such as Figure 2 As shown, the outer wall of the movable ring 21 has a through hole, and a pin bolt 23 is provided in the through hole. The outer wall of the pin bolt 23 is threadedly connected to the inner wall of the guide block 22. By tightening the pin bolt 23, the pin bolt 23 can be pressed against the groove opened on the outer wall of the laser cladding assembly 1, thereby fixing the movable ring 21 and preventing the movable ring 21 from sliding.

[0031] In an optional embodiment, such as Figure 2 and Figure 3 As shown, positioning blocks 33 are fixedly connected to the inner walls of the first connecting block 31 and the second connecting block 32, and the outer wall of the positioning block 33 is inserted into the inner wall of the feeding tube 14. The positioning blocks 33 can quickly position the first connecting block 31 and the second connecting block 32 on the outer wall of the feeding tube 14, thereby facilitating the fixing of the first connecting block 31 and the second connecting block 32.

[0032] In an optional embodiment, such as Figure 2 and Figure 3 As shown, the outer wall of the second connecting block 32 is provided with a groove that matches the shape of the slider 36, and the effective stroke of the slider 36 in the groove is greater than the length of the insertion rod 35 inserted into the inner wall of the limiting rod 34. This can avoid interference when the slider 36 slides, thus preventing the insertion rod 35 from being unable to disengage from the inner wall of the limiting rod 34.

[0033] In an optional embodiment, such as Figure 2 and Figure 4 As shown, the stirring blade 48 is spiral in shape. When the stirring blade 48 rotates, it can help the powder in the feed pipe 17 flow downward and avoid blockage.

[0034] The above embodiment discloses a coaxial dual-path powder feeding device for laser cladding. In use, the required powder is added to the powder box 16. Then, as needed, the pin bolt 23 is rotated so that it no longer presses against the outer wall of the laser cladding assembly 1. The movable ring 21 can then slide against the outer wall of the laser cladding assembly 1. The movable ring 21 drives the guide block 22 to slide synchronously against the inner wall of the laser cladding assembly 1, thereby causing the movable rod 24 to move synchronously. This causes the movable rod 24 to rotate the feeding tube 14, changing the angle of the feeding tube 14. This optimizes the powder feeding angle of the feeding pipe 14. Then, the valve inside the discharge pipe 17 can be opened, allowing the powder in the powder box 16 to enter the powder conveying hose 18 through the discharge pipe 17, and then from the powder conveying hose 18 into the feeding pipe 14. Simultaneously, the air pump 12 is started, supplying gas into the feeding pipe 14 through the air supply pipe 13. This accelerates the flow of the powder entering the feeding pipe 14, causing it to be ejected from the feeding pipe 14, thus completing the powder feeding process. During the powder feeding process, the motor 41 is started, driving the rotating rod 42 and the driving bevel gear 45 to rotate, causing the driving bevel gear 45 and the driven bevel gear 45 to interact. 6. Engagement drives the rotating shaft 47 to rotate, which in turn drives the stirring blades 48 to rotate, conveying the powder in the feed pipe 17 and preventing powder accumulation and blockage. Later, when the feed pipe 14 needs to be disassembled and replaced, pull the insert rod 35, causing the insert rod 35 to drive the slider 36 to slide synchronously on the outer wall of the slider 37, causing the spring 38 to contract. This prevents the outer wall of the insert rod 35 from engaging with the inner wall of the limiting rod 34, allowing the limiting rod 34 to be pulled, thus preventing it from engaging with the first connecting block 31 and the second connecting block 32. Then, the first connecting block 31 and the second connecting block 32 can be separated, and the feeding pipe 14 will no longer be restricted. Then, the feeding pipe 14 can be disassembled and replaced. In summary, the angle of the feeding pipe 14 can be adjusted by the adjusting mechanism 2 to make the powder feeding angle of the feeding pipe 14 better. Then, the powder feeding mechanism 4 can clear the powder in the discharge pipe 17 to avoid the powder blockage in the discharge pipe 17, which would cause powder interruption. Subsequently, the feeding pipe 14 can be quickly disassembled by the fixing component 3, so as to facilitate the replacement or maintenance of the feeding pipe 14.

[0035] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A coaxial dual-path powder feeding device for laser cladding, comprising a laser cladding assembly (1), wherein connecting plates (11) are fixedly connected at symmetrical positions on the outer wall of the laser cladding assembly (1), an air pump (12) is fixedly connected to the outer wall of the connecting plates (11) away from the laser cladding assembly (1), and a powder box (16) is fixedly connected to the outer wall of the connecting plates (11) near the air pump (12), characterized in that, The output end of the air pump (12) is fixedly connected to an air supply pipe (13). The outer wall of the air supply pipe (13) away from the connecting plate (11) is fixedly connected to a feeding pipe (14). The bottom end of the powder box (16) is fixedly connected to a discharge pipe (17). The outer wall of the discharge pipe (17) is fixedly connected to the inner wall of the connecting plate (11). The bottom end of the discharge pipe (17) is fixedly connected to a powder conveying hose (18). The outer wall of the powder conveying hose (18) away from the discharge pipe (17) is fixedly connected to the outer wall of the feeding pipe (14). A valve is provided in the inner cavity of the discharge pipe (17) near the powder conveying hose (18). An adjustment mechanism (2) is provided on the outer wall of the laser cladding assembly (1). A fixing assembly (3) is provided on the outer wall of the feeding pipe (14). A powder feeding mechanism (4) is provided in the inner cavity of the powder box (16).

2. The laser cladding coaxial dual-path powder feeding device according to claim 1, characterized in that, The adjustment mechanism (2) includes a movable ring (21), the inner wall of the movable ring (21) is slidably connected to the outer wall of the laser cladding assembly (1), a guide block (22) is fixedly connected to the inner wall of the movable ring (21), the outer wall of the guide block (22) is slidably connected to a groove opened on the outer wall of the laser cladding assembly (1), and a movable rod (24) is rotatably connected to the outer wall of the movable ring (21) near the connecting plate (11).

3. The laser cladding coaxial dual-path powder feeding device according to claim 1, characterized in that, The fixing component (3) includes two first connecting blocks (31) and two second connecting blocks (32). The outer wall of the first connecting block (31) overlaps with the outer wall of the second connecting block (32). The outer wall of the upper second connecting block (32) is rotatably connected to the outer wall of the movable rod (24), and the outer wall of the lower second connecting block (32) is rotatably connected to the outer wall of the fixing ring (15). A limiting rod (34) is inserted into the inner wall of the first connecting block (31). The outer wall of the limiting rod (34) is inserted into the inner wall of the second connecting block (32). The limiting rod (34) is close to the second connecting block (24). A rod (35) is inserted into the inner wall of the block (32). A slider (36) is fixedly connected to the rod (35) near the outer wall of the second connecting block (32). The outer wall of the slider (36) is slidably connected to the inner wall of the second connecting block (32). A slide rod (37) is slidably connected to the inner wall of the slider (36). The outer wall of the slide rod (37) is fixedly connected to the inner cavity of the second connecting block (32). A spring (38) is sleeved on the outer wall of the slide rod (37). One end of the spring (38) is fixedly connected to the inner cavity of the second connecting block (32), and the other end is fixedly connected to the outer wall of the slider (36).

4. The laser cladding coaxial dual-path powder feeding device according to claim 1, characterized in that, The powder feeding mechanism (4) includes a motor (41), the outer wall of which is fixedly connected to the outer wall of the powder box (16). The output end of the motor (41) is fixedly connected to a rotating rod (42) through the outer wall of the powder box (16). A protective cover (43) is rotatably connected to the outer wall of the rotating rod (42). The outer wall of the protective cover (43) is fixedly connected to the inner cavity of the powder box (16). A mounting box (44) is fixedly connected to the outer wall of the protective cover (43) near the discharge pipe (17). The outer wall of the mounting box (44) is fixedly connected to the inner cavity of the powder box (16). The outer wall of the rotating rod (42) passes through the outer wall of the mounting box (44) and is fixedly connected to an active bevel tooth (45). The outer wall of the active bevel tooth (45) meshes with a driven bevel tooth (46). A rotating shaft (47) is fixedly connected at the axis of the driven bevel tooth (46). The outer wall of the rotating shaft (47) is rotatably connected to the inner wall of the mounting box (44). A stirring blade (48) is fixedly connected to the outer wall of the rotating shaft (47).

5. A coaxial dual-path powder feeding device for laser cladding according to claim 2, characterized in that, The outer wall of the movable ring (21) has a through hole, and a pin bolt (23) is provided in the through hole. The outer wall of the pin bolt (23) is threadedly connected to the inner wall of the guide block (22).

6. The laser cladding coaxial dual-path powder feeding device according to claim 3, characterized in that, The inner walls of the first connecting block (31) and the second connecting block (32) are both fixedly connected with positioning blocks (33), and the outer wall of the positioning block (33) is inserted into the inner wall of the feeding pipe (14).

7. A coaxial dual-path powder feeding device for laser cladding according to claim 3, characterized in that, The outer wall of the second connecting block (32) is provided with a groove that matches the shape of the slider (36), and the effective stroke of the slider (36) in the groove is greater than the length of the insertion rod (35) inserted into the inner wall of the limiting rod (34).

8. A coaxial dual-path powder feeding device for laser cladding according to claim 4, characterized in that, The stirring blade (48) is spiral in shape.

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