Laser cladding powder flow control device

Abstract

The utility model belongs to the field of laser cladding technology, concretely relates to laser cladding powder flow control device, including laser input pipe, the bottom of laser input pipe is provided with grinding device, the bottom of grinding device is provided with control device, the bottom of control device is provided with cladding mechanism, the inner wall of cladding mechanism is provided with powder feeding channel, grinding device includes motor, the top fixed connection of motor is at the bottom of control device, the output shaft fixed connection of motor has the pivot, the top fixed connection of pivot has drive gear. The utility model discloses the setting of grinding device has solved the problem that cannot grind the powder, thereby the gear ring will drive the grinding stone to rotate when rotating, and then the grinding stone will use the friction of grinding block to grind the powder when rotating, and the effect that the well-grounded powder will pass through the powder outlet of filter board and enter the powder storage cylinder through the powder inlet.

Description

Technical Field

[0001] This utility model relates to the field of laser cladding, and more specifically, to a laser cladding powder flow control device. Background Technology

[0002] The laser cladding powder flow control device is a crucial piece of equipment in laser cladding technology. It is used to precisely control the flow rate of powder material, thereby ensuring the quality and effectiveness of the laser cladding process. Laser cladding is a process that uses a laser beam to heat the surface of a substrate, melting and coating it with a layer of powder material to form a high-performance surface layer with properties such as wear resistance and corrosion resistance.

[0003] A search revealed that Chinese Patent Publication No. CN212247214U discloses a "laser cladding head device," comprising a laser input pipeline, a metal powder pipeline, a cooling mechanism, and a control mechanism. The cooling mechanism includes a water tank, a heat dissipation pipe, and a water pump. The control mechanism includes a microcomputer controller, a powder flow meter, a temperature sensor, and a water level sensor. The water tank is located on one side of the cladding head. One end of the heat dissipation pipe connects to the upper part of the water tank, and the other end extends outside the device and communicates with the atmosphere. The water pump is located inside the heat dissipation pipe. The powder flow meter is located at the outlet of the metal powder pipeline. The temperature sensor and the water level sensor are located inside the water tank. This invention can effectively reduce the temperature of the laser cladding head and the metal powder pipeline, thereby improving the efficiency and quality of the cladding layer to a certain extent. It also solves the problem of powder blockage during laser cladding, making powder output smoother and the cladding layer thickness more uniform, further ensuring the cladding quality. However, it still has the following drawbacks:

[0004] (1) The above-mentioned application, through the laser input pipeline, metal powder pipeline, cooling mechanism and control mechanism components, cannot grind the powder, resulting in excessively large powder particles that may affect the laser melting effect.

[0005] (2) The above application cannot control the powder conveying through microcomputer controller, powder flow meter, temperature sensor and water level sensor, which will result in uneven coating thickness, poor performance or unstable quality if the control is not properly implemented. Therefore, a laser cladding powder flow control device is proposed. Utility Model Content

[0006] The purpose of this invention is to address the current problem that the inability to grind powder results in excessively large powder particles that may affect the melting effect of the laser and cause unstable quality of the cladding layer.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] The present invention is as follows: a laser cladding powder flow control device, including a laser input tube, a grinding device at the bottom of the laser input tube, a control device at the bottom of the grinding device, a cladding mechanism at the bottom of the control device, and a powder feeding channel on the inner wall of the cladding mechanism;

[0009] The grinding device includes a motor, the top of which is fixedly connected to the bottom of the control device. The output shaft of the motor is fixedly connected to a rotating shaft, and the top of the rotating shaft is fixedly connected to a drive gear. The top of the control device has a powder inlet, and the top of the control device has a grinding block fixedly connected to it. The bottom of the grinding block has a powder outlet.

[0010] As a preferred technical solution of this utility model, the inner wall of the grinding block is rotatably connected to a grinding stone, and a gear ring is fixedly connected to the circumferential surface of the grinding stone. The function of the gear ring is to drive the grinding stone to rotate and grind the powder inside the grinding block.

[0011] As a preferred technical solution of this utility model, the top of the grinding stone is provided with a feeding port, and the inner wall of the grinding block is fixedly connected with a filter plate so as to filter the ground powder.

[0012] As a preferred technical solution of this utility model, the circumferential surface of the drive gear meshes with the circumferential surface of the gear ring, the bottom of the grinding stone is located above the filter plate, and the top of the powder inlet is located below the powder outlet. The function of the circumferential surface of the drive gear meshing with the circumferential surface of the gear ring is to drive the gear ring to rotate when the drive gear rotates.

[0013] As a preferred technical solution of this utility model, the control device includes a powder storage cylinder. The bottom of the powder storage cylinder is fixedly connected to the top of the cladding mechanism. The circumferential surface of the rotating shaft rotates through the inner wall of the powder storage cylinder. A pulley is fixedly connected to the circumferential surface of the rotating shaft. A belt is driven through the inner wall of the pulley. A second pulley is driven through the inner wall of the belt. A rotating rod is fixedly connected to the inner wall of the second pulley. The bottom of the rotating rod is rotatably connected to the inner wall of the powder storage cylinder. A half gear is fixedly connected to the circumferential surface of the rotating rod. A rack is slidably connected to the inner wall of the powder storage cylinder. A connecting rod is fixedly connected to the top of the rack. A baffle is fixedly connected to the bottom of the connecting rod. The function of the baffle is to control the opening and closing of the powder feeding channel.

[0014] As a preferred technical solution of this utility model, a force-bearing plate is fixedly connected to the inner wall of the powder storage cylinder, and a tension spring is fixedly connected to the side of the force-bearing plate. The end of the tension spring away from the force-bearing plate is fixedly connected to the side of the rack. The function of the tension spring is to allow the rack to reset using the tension spring when the half gear no longer pushes the rack.

[0015] As a preferred technical solution of this utility model, the circumferential surface of the half gear meshes with the side surface of the rack, and the number of baffles is set to two, which are symmetrical to each other along the vertical central axis of the powder storage cylinder. The function of the circumferential surface of the half gear meshing with the side surface of the rack is to push the rack to move when the half gear rotates.

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

[0017] 1. This utility model, through the setting of the grinding device, when the output shaft of the motor rotates, it drives the rotating shaft to rotate. When the rotating shaft rotates, it drives the drive gear to rotate. When the drive gear rotates, it drives the gear ring to rotate. When the gear ring rotates, it drives the grinding stone to rotate. Then, when the grinding stone rotates, it grinds the powder by friction with the grinding block. The ground powder will enter the powder storage cylinder through the powder outlet of the filter plate and the powder inlet.

[0018] 2. This utility model, through the setting of the control device, ensures that when the half gear rotates to the toothless side, the rack will be unable to receive the thrust from the half gear and will use the tension spring to drive the baffle to reset through the connecting plate, blocking the powder feeding channel. When the half gear rotates to the toothed side again, the above principle will be repeated. In this way, the time for opening the powder feeding channel each time can be controlled, and the powder supply can be controlled to ensure that the powder is uniformly melted and deposited on the surface of the workpiece, preventing uneven coating thickness, poor performance or unstable quality caused by improper control. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the entire utility model;

[0020] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the grinding device of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the control device of this utility model;

[0022] Figure 4 This is a utility model Figure 2 A schematic diagram of the three-dimensional magnified structure at point A in the middle;

[0023] Figure 5 This is a utility model Figure 3 A schematic diagram of the three-dimensional magnified structure at point B.

[0024] 1. Laser input tube; 2. Grinding device; 21. Motor; 22. Rotating shaft; 23. Drive gear; 24. Powder inlet; 25. Grinding block; 26. Powder outlet; 27. Grinding stone; 28. Gear ring; 29. ​​Feeding port; 210. Filter plate; 3. Control device; 31. Powder storage cylinder; 32. Pulley one; 33. Belt; 34. Pulley two; 35. Rotating rod; 36. Half gear; 37. Rack; 38. Connecting rod; 39. Baffle; 310. Force plate; 311. Tension spring; 4. Cladding mechanism; 5. Powder feeding channel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] like Figure 1 , Figure 2 , Figure 4 As shown, this embodiment proposes a laser cladding powder flow control device, including a laser input tube 1, a grinding device 2 is provided at the bottom of the laser input tube 1, a control device 3 is provided at the bottom of the grinding device 2, a cladding mechanism 4 is provided at the bottom of the control device 3, and a powder feeding channel 5 is provided on the inner wall of the cladding mechanism 4.

[0030] The grinding device 2 includes a motor 21, the top of which is fixedly connected to the bottom of the control device 3. The output shaft of the motor 21 is fixedly connected to a rotating shaft 22, and the top of the rotating shaft 22 is fixedly connected to a drive gear 23. The top of the control device 3 has a powder inlet 24, and the top of the control device 3 has a grinding block 25 fixedly connected to it. The bottom of the grinding block 25 has a powder outlet 26.

[0031] like Figure 2As shown, in a preferred embodiment, based on the above method, the inner wall of the grinding block 25 is further rotatably connected to a grinding stone 27, and a gear ring 28 is fixedly connected to the circumferential surface of the grinding stone 27. The function of the gear ring 28 is to drive the grinding stone 27 to rotate and grind the powder in the grinding block 25.

[0032] like Figure 1 , Figure 4 As shown, in a preferred embodiment, based on the above method, the top of the grinding stone 27 is provided with a feeding port 29, and the inner wall of the grinding block 25 is fixedly connected with a filter plate 210 so that the ground powder can be filtered.

[0033] like Figure 2 , Figure 4 As shown, in a preferred embodiment, based on the above method, the circumferential surface of the drive gear 23 meshes with the circumferential surface of the gear ring 28, the bottom of the grinding stone 27 is located above the filter plate 210, and the top of the powder inlet 24 is located below the powder outlet 26. The purpose of the circumferential surface of the drive gear 23 meshing with the circumferential surface of the gear ring 28 is to drive the gear ring 28 to rotate when the drive gear 23 rotates.

[0034] like Figure 3 , Figure 5 As shown, in a preferred embodiment, based on the above method, the control device 3 further includes a powder storage cylinder 31. The bottom of the powder storage cylinder 31 is fixedly connected to the top of the cladding mechanism 4. The circumferential surface of the rotating shaft 22 rotates through the inner wall of the powder storage cylinder 31. A pulley 32 is fixedly connected to the circumferential surface of the rotating shaft 22. A belt 33 is drivenly connected to the inner wall of the pulley 32. A pulley 34 is drivenly connected to the inner wall of the belt 33. A rotating rod 35 is fixedly connected to the inner wall of the pulley 34. The bottom of the rotating rod 35 is rotatably connected to the inner wall of the powder storage cylinder 31. A half gear 36 is fixedly connected to the circumferential surface of the rotating rod 35. A rack 37 is slidably connected to the inner wall of the powder storage cylinder 31. A connecting rod 38 is fixedly connected to the top of the rack 37. A baffle 39 is fixedly connected to the bottom of the connecting rod 38. The function of the baffle 39 is to control the opening and closing of the powder feeding channel 5.

[0035] like Figure 5 As shown, in a preferred embodiment, based on the above method, a force plate 310 is fixedly connected to the inner wall of the powder storage cylinder 31, and a tension spring 311 is fixedly connected to the side of the force plate 310. The end of the tension spring 311 away from the force plate 310 is fixedly connected to the side of the rack 37. The function of the tension spring 311 is to allow the rack 37 to be reset by means of the tension spring 311 when the half gear 36 no longer pushes the rack 37.

[0036] like Figure 3 , Figure 5As shown, in a preferred embodiment, based on the above method, the circumferential surface of the half gear 36 meshes with the side surface of the rack 37, and the number of baffles 39 is set to two, which are symmetrical to each other along the vertical central axis of the powder storage cylinder 31. The function of the circumferential surface of the half gear 36 meshing with the side surface of the rack 37 is to push the rack 37 to move when the half gear 36 rotates.

[0037] Specifically, when using this laser cladding and grinding device: First, when the device is needed, the grinding device 2 can be used to grind the powder to prevent excessively small powder particles from affecting the laser melting effect and causing unstable quality of the cladding layer. The powder to be ground is added to the grinding block 25 through the feeding port 29. Then, the motor 21 is started. When the output shaft of the motor 21 rotates, it will drive the rotating shaft 22 to rotate. When the rotating shaft 22 rotates, it will drive the drive gear 23 to rotate. When the drive gear 23 rotates, it will drive the gear ring 28 to rotate. When the gear ring 28 rotates, it will drive the grinding stone 27 to rotate. Then, when the grinding stone 27 rotates, it will use the friction between the grinding block 25 and the grinding stone to grind the powder. The ground powder will pass through the filter plate 210, the powder outlet 26, and the powder inlet 24 into the powder storage cylinder 31.

[0038] The rotation of the shaft 22 drives the control device 3. When the shaft 22 rotates, it drives the pulley 32 to rotate, which in turn drives the belt 33 to rotate. The belt 33 then drives the pulley 34 to rotate, which in turn drives the rotating rod 35 to rotate inside the powder storage cylinder 31. The rotating rod 35 then drives the half gear 36 to rotate, which in turn pushes the rack 37 to move. As the rack 37 moves, it drives the baffle 39 to move via the connecting rod 38. This movement of the baffle 39 opens the powder feeding channel 5, thereby opening the powder storage cylinder. The powder inside 31 will enter the powder feeding channel 5 through the powder feeding channel 5. When the half gear 36 rotates to the toothless side, the rack 37 will be unable to receive the thrust of the half gear 36. The tension spring 311 will drive the baffle 39 to reset through the connecting rod 38 to block the powder feeding channel 5. When the half gear 36 rotates to the toothed side again, the above principle will be repeated. In this way, the time when the powder feeding channel 5 is opened can be controlled, and the powder supply can be controlled to ensure that the powder is melted and deposited on the workpiece surface evenly. This will prevent improper control from causing uneven coating thickness, poor performance or unstable quality.

[0039] All technical features in this embodiment can be freely combined according to actual needs.

[0040] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A laser cladding powder flow control device, comprising a laser input tube (1), characterized in that, A grinding device (2) is provided at the bottom of the laser input tube (1), a control device (3) is provided at the bottom of the grinding device (2), a cladding mechanism (4) is provided at the bottom of the control device (3), and a powder feeding channel (5) is provided on the inner wall of the cladding mechanism (4). The grinding device (2) includes a motor (21), the top of which is fixedly connected to the bottom of the control device (3). The output shaft of the motor (21) is fixedly connected to a rotating shaft (22), the top of which is fixedly connected to a drive gear (23). The top of the control device (3) has a powder inlet (24), the top of which is fixedly connected to a grinding block (25), and the bottom of the grinding block (25) has a powder outlet (26).

2. The laser cladding powder flow control device according to claim 1, characterized in that, The inner wall of the grinding block (25) is rotatably connected to a grinding stone (27), and a gear ring (28) is fixedly connected to the circumferential surface of the grinding stone (27).

3. The laser cladding powder flow control device according to claim 2, characterized in that, The grinding stone (27) has a feeding port (29) at the top, and a filter plate (210) is fixedly connected to the inner wall of the grinding block (25).

4. The laser cladding powder flow control device according to claim 3, characterized in that, The circumferential surface of the drive gear (23) meshes with the circumferential surface of the gear ring (28), the bottom of the grinding stone (27) is located above the filter plate (210), and the top of the powder inlet (24) is located below the powder outlet (26).

5. The laser cladding powder flow control device according to claim 1, characterized in that, The control device (3) includes a powder storage cylinder (31), the bottom of which is fixedly connected to the top of the cladding mechanism (4). The circumferential surface of the rotating shaft (22) rotates through the inner wall of the powder storage cylinder (31). A pulley (32) is fixedly connected to the circumferential surface of the rotating shaft (22). A belt (33) is driven to the inner wall of the pulley (32). A pulley (34) is driven to the inner wall of the belt (33). A rotating rod (35) is fixedly connected to the inner wall of the pulley (34). The bottom of the rotating rod (35) is rotatably connected to the inner wall of the powder storage cylinder (31). A half gear (36) is fixedly connected to the circumferential surface of the rotating rod (35). A rack (37) is slidably connected to the inner wall of the powder storage cylinder (31). A connecting rod (38) is fixedly connected to the top of the rack (37). A baffle (39) is fixedly connected to the bottom of the connecting rod (38).

6. The laser cladding powder flow control device according to claim 5, characterized in that, The inner wall of the powder storage cylinder (31) is fixedly connected to a force plate (310), and a tension spring (311) is fixedly connected to the side of the force plate (310). The end of the tension spring (311) away from the force plate (310) is fixedly connected to the side of the rack (37).

7. The laser cladding powder flow control device according to claim 5, characterized in that, The circumferential surface of the half gear (36) meshes with the side surface of the rack (37), and the number of the baffles (39) is set to two, and they are symmetrical to each other along the vertical central axis of the powder storage cylinder (31).

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