Laser cladding device

Abstract

The utility model discloses a laser cladding device in the technical field of laser cladding, which comprises symmetrically arranged supports, a support plate and a mounting seat, the support plate and the mounting seat are lapped on the supports, the support plate, the mounting seat and the supports are all connected through screws, a driving component is arranged in the mounting seat and comprises a transmission screw, and the transmission screw is connected with the support through screws. The transmission screw is driven by a driving motor and connected with a sliding seat through threads, supporting rods are symmetrically arranged on the two sides, corresponding to the support, of the sliding seat, the supporting rods are connected with threaded sleeves through threads, supporting plates are hinged to the outer ends of the supporting rods, the upper ends of the supporting plates are connected with shaft sleeves through connecting rods, and cladding powder feeding assemblies are installed on the supporting plates. The cladding powder feeding assembly comprises a powder feeding barrel, and an air inlet pipe and a powder inlet pipe are arranged on the powder feeding barrel; according to the laser cladding device, the temperature of the molten pool can be controlled in real time, the laser cladding effect is effectively guaranteed, the end of the laser is protected under the condition that the laser is not used, and the service life of the laser is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cladding, in particular to a laser cladding device. Background Art

[0002] Additive manufacturing is a technology that uses digital model files to print components layer by layer using various materials. It is often used in mold manufacturing, industrial design and other fields. Additive manufacturing includes laser cladding technology. Laser cladding technology is a new surface modification technology. It is a complex process involving the coupling of multiple physical fields of light, powder and gas. Its smallest forming unit molten pool is the basis of the entire additive manufacturing. The stability of the molten pool during the cladding process can improve the dimensional accuracy of the forming and the cladding quality.

[0003] In the prior art, it is difficult to control and adjust the temperature of the molten pool in real time, which in turn affects the effect of laser cladding. To address this, we propose a laser cladding device. Utility Model Content

[0004] The utility model aims to provide a laser cladding device to solve the problem in the prior art proposed in the above background technology that it is difficult to control and adjust the temperature of the molten pool in real time, thereby affecting the laser cladding effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a laser cladding device, comprising a symmetrically arranged bracket and a support plate and a mounting seat overlapped on the bracket, the support plate, the mounting seat and the bracket are all connected by screws, a driving assembly is arranged inside the mounting seat, the driving assembly comprises a transmission screw, the transmission screw is driven by a driving motor, a sliding seat is connected to the transmission screw by threads, support rods are symmetrically arranged on both sides of the sliding seat corresponding to the bracket, a threaded sleeve is connected to the support rod by threads, a support plate is hinged at the outer end of the support rod, the upper end of the support plate is connected to the shaft sleeve by a connecting rod, a cladding powder feeding assembly is installed on the support plate, the cladding powder feeding assembly comprises a powder feeding barrel, and an air inlet pipe and a powder inlet pipe are arranged on the powder feeding barrel;

[0006] A protective part is fixedly installed in front of the mounting seat, and the protective part is connected to the inside of the mounting seat. The sliding seat is movably connected to the inside of the protective part. A laser is installed at the front lower part of the sliding seat. A camera device is provided in front of the laser and the camera device is fixedly installed on the sliding seat. An infrared thermometer is installed on the rear side of the laser. The infrared thermometer, the camera device, the laser and the powder feeding equipment are all electrically connected to the PLC controller through wires.

[0007] Preferably, the connecting rod and the shaft sleeve are hingedly connected.

[0008] Preferably, a guide groove for sliding of the support rod is provided on the protective member, and the left and right positions of the support rod and the laser correspond to each other.

[0009] Preferably, the lower end of the protective member is open, and the laser is movably connected to the inside of the protective member.

[0010] Preferably, the center line of the powder feeding tube intersects with the center line of the laser, and the laser is arranged between adjacent powder feeding tubes.

[0011] Preferably, the air inlet pipe and the powder inlet pipe are both hoses, and the air inlet pipe and the powder inlet pipe are both communicated with the interior of the powder delivery barrel.

[0012] Preferably, a slide groove is provided on the corresponding surface of the connecting rod and the support plate, and a pin is provided on the corresponding surface of the support plate, and the pin is slidably connected to the inside of the slide groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. This type of laser cladding device collects images of the molten pool through a camera device, then performs threshold processing on the collected images through matlab software, and calibrates the actual temperature of the threshold of the corresponding area according to the infrared thermometer. When the actual molten pool temperature obtained according to the threshold of the collected image exceeds / is lower than the temperature required for the cladding process, the visual recognition system will gradually reduce / increase the laser power and transmit the power value to the host computer, which will then transmit the power value to the PLC controller. The PLC controller obtains the power assignment and finally passes it to the laser. After the laser receives the signal, it adjusts the power size, and finally realizes the image recognition PID control of the temperature of the laser cladding device.

[0015] 2. This type of laser cladding device, through the setting of the driving component, can protect the end of the laser when not in use, further improving the service life of the laser. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0018] Figure 3 It is a schematic diagram of the partial main cross-sectional structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the side section structure of the utility model;

[0020] Figure 5 It is a main schematic diagram of the utility model;

[0021] Figure 6 It is a top view schematic diagram of the utility model;

[0022] Figure 7 For the utility model Figure 3 The enlarged view of M;

[0023] Figure 8 This is a schematic diagram of the temperature measurement principle of the utility model.

[0024] In the figure: 100, protective part; 1, bracket; 2, support plate; 3, mounting seat; 4, driving assembly; 41, driving motor; 42, transmission screw; 43, sliding seat; 44, support rod; 45, cladding powder feeding assembly; 451, powder feeding barrel; 452, support plate; 453, connecting rod; 454, threaded sleeve; 455, air inlet pipe; 456, powder inlet pipe; 457, slide groove; 458, pin shaft; 46, laser; 47, camera device; 48, infrared thermometer. DETAILED DESCRIPTION

[0025] 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.

[0026] Example: See Figure 1-8 The utility model provides a technical solution: a laser cladding device, which is mainly aimed at improving the problem in the prior art that it is difficult to control and adjust the temperature of the molten pool in real time, thereby affecting the laser cladding effect. The specific scheme is as follows: it includes a symmetrically arranged bracket 1 and a support plate 2 and a mounting seat 3 overlapped on the bracket 1. In order to be suitable for modern batch flow processing operations, the symmetrically arranged bracket 1 can be fixed on both sides of the line body of the transmission line, and through cooperation with corresponding components, the automatic cladding operation of the workpiece is realized. Among them, the support plate 2 and the mounting seat 3 are connected to the bracket 1 by screws.

[0027] See also Figure 1 and Figure 2A driving assembly 4 is provided inside the mounting seat 3. The driving assembly 4 includes a transmission screw 42. The transmission screw 42 is driven by a driving motor 41. The driving motor 41 is fixedly mounted on the support plate 2, and the driving motor 41 is connected to the control switch through a wire. After the driving motor 41 is turned on, the transmission screw 42 can be rotated. A sliding seat 43 is threadedly connected to the transmission screw 42, and support rods 44 are symmetrically provided on both sides of the corresponding bracket 1 of the sliding seat 43. If the sliding seat 43 is restricted from rotating, during the rotation of the transmission screw 42, the sliding seat 43 can generate an upward or downward movement along the center line direction of the transmission screw 42.

[0028] See also Figure 1 and Figure 3 , a threaded sleeve 454 is connected to the support rod 44 through a thread, a shaft sleeve 459 is rotatably connected to the outer side of the threaded sleeve 454, a support plate 452 is hinged to the outer end of the support rod 44, and the upper end of the support plate 452 is connected through a connecting rod 453 shaft sleeve 459, and the connecting rod 453 and the shaft sleeve 459 are hingedly connected. A slide groove 457 is provided on the corresponding surface of the connecting rod 453 and the support plate 452, and a pin 458 is provided on the corresponding surface of the support plate 452, and the pin 458 is slidably connected inside the slide groove 457. A cladding powder feeding assembly 45 is installed on the support plate 452. After the threaded sleeve 454 is rotated, the threaded sleeve 454 can drive the shaft sleeve 459 to move. Through the connection of the connecting rod 453, the support plate 452 can swing a certain angle around the hinge between it and the support rod 44, and the powder feeding angle of the cladding powder feeding assembly 45 can be adjusted.

[0029] Specifically, the cladding powder feeding assembly 45 includes a powder feeding barrel 451 , on which are provided an air inlet pipe 455 and a powder inlet pipe 456 . Both the air inlet pipe 455 and the powder inlet pipe 456 are hoses, and both are in communication with the interior of the powder feeding barrel 451 .

[0030] A protective member 100 is fixedly installed in front of the mounting seat 3, and the protective member 100 is connected to the inside of the mounting seat 3. The sliding seat 43 is movably connected to the inside of the protective member 100. A laser 46 is installed at the front lower part of the sliding seat 43. A guide groove for the sliding of the support rod 44 is provided on the protective member 100, and the left and right positions of the support rod 44 and the laser 46 correspond. The lower end of the protective member 100 is open, and the laser 46 is movably connected to the inside of the protective member 100. The center line of the powder delivery cylinder 451 intersects with the center line of the laser 46, and the laser 46 is arranged between adjacent powder delivery cylinders 451.

[0031] In this embodiment, a camera device 47 is provided in front of the laser 46, and the camera device 47 is fixedly mounted on the sliding seat 43. An infrared thermometer 48 is installed on the rear side of the laser 46. The infrared thermometer 48, the camera device 47, the laser 46 and the powder feeding equipment are all electrically connected to the PLC controller through wires.

[0032] See also Figure 8 , wherein the camera device 47 collects the image of the molten pool, and then performs threshold processing on the collected image through matlab software, and performs actual temperature calibration on the threshold of the corresponding area according to the infrared thermometer 48. (Visual recognition system calibration). When the actual molten pool temperature obtained by the visual recognition system (matlab GUI software) according to the threshold of the collected image exceeds / is lower than the temperature required for the cladding process, the visual recognition system will gradually reduce / increase the laser power and transmit the power value to the host computer, and the host computer will further transmit the power value to the PLC controller. The PLC controller obtains the power assignment and finally transmits it to the laser 46. After the laser 46 receives the signal, it adjusts the power size, and finally realizes the image recognition PID control of the temperature of the laser cladding device.

[0033] Working principle: This type of laser cladding device fixes the bracket 1 on both sides of the conveying line body by bolts. By turning on the drive motor 41, the transmission screw 42 can be rotated, and then the sliding seat 43 is driven to move upward or downward along the axial direction of the transmission screw 42, so that the laser 46 is disengaged from the inside of the protective member 100 and placed at a suitable height; through the setting of the protective member 100, the end of the laser 46 can be protected when not in use; after the adjustment is completed, the substrate is conveyed to the bottom of the laser 46 along with the line body, and the cladding powder feeding component 45 sends the powder or wire cladding material into the molten pool through the nozzle during the cladding process, and adopts laser beam irradiation scanning to melt, so as to completely melt the coating material and the surface of the substrate in a rapid solidification process, and the cladding layer forms a complete metallurgical bond with the surface of the base material. During this process, the camera device 47 collects the image of the molten pool, and then performs threshold processing on the collected image through matlab software, and performs actual temperature calibration on the threshold of the corresponding area according to the infrared thermometer 48. When the actual molten pool temperature obtained according to the threshold of the collected image exceeds / is lower than the temperature required for the cladding process, the visual recognition system will gradually reduce / increase the laser power and transmit the power value to the host computer, which will further transmit the power value to the PLC controller. After obtaining the power assignment, the PLC controller will finally pass it to the laser 46. After receiving the signal, the laser 46 adjusts the power size, and finally realizes the image recognition PID control of the temperature of the laser cladding device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser cladding device, comprising a symmetrically arranged bracket (1) and a support plate (2) and a mounting seat (3) overlapped on the bracket (1), wherein the support plate (2), the mounting seat (3) and the bracket (1) are all connected by screws, characterized in that: A driving assembly (4) is provided inside the mounting seat (3), wherein the driving assembly (4) comprises a driving screw (42), wherein the driving screw (42) is driven by a driving motor (41), wherein a sliding seat (43) is connected to the driving screw (42) via a thread, wherein support rods (44) are symmetrically provided on two sides of the sliding seat (43) corresponding to the bracket (1), wherein a threaded sleeve (454) is connected to the support rod (44) via a thread, wherein a support plate (452) is hingedly connected to the outer end of the support rod (44), wherein the upper end of the support plate (452) is connected to the shaft sleeve (459) via a connecting rod (453), wherein a cladding powder feeding assembly (45) is installed on the support plate (452), wherein the cladding powder feeding assembly (45) comprises a powder feeding barrel (451), wherein an air inlet pipe (455) and a powder feeding pipe (456) are provided on the powder feeding barrel (451); A protective member (100) is fixedly mounted in front of the mounting seat (3), the protective member (100) and the mounting seat (3) are internally connected, the sliding seat (43) is movably connected to the interior of the protective member (100), a laser (46) is mounted at the front lower portion of the sliding seat (43), a camera device (47) is provided in front of the laser (46), the camera device (47) is fixedly mounted on the sliding seat (43), an infrared thermometer (48) is mounted at the rear side of the laser (46), and the infrared thermometer (48), the camera device (47), the laser (46) and the powder feeding device are all electrically connected to a PLC controller via wires.

2. A laser cladding device according to claim 1, characterized in that: The connecting rod (453) and the shaft sleeve (459) are hingedly connected.

3. A laser cladding device according to claim 1, characterized in that: The protective member (100) is provided with a guide groove for the support rod (44) to slide, and the support rod (44) and the laser (46) correspond to each other in left and right positions.

4. A laser cladding device according to claim 1, characterized in that: The lower end of the protective member (100) is open, and the laser (46) is movably connected to the inside of the protective member (100).

5. The laser cladding device according to claim 1, characterized in that: The center line of the powder delivery cylinder (451) and the center line of the laser (46) intersect, and the laser (46) is arranged between adjacent powder delivery cylinders (451).

6. A laser cladding device according to claim 1, characterized in that: The air inlet pipe (455) and the powder inlet pipe (456) are both hoses, and the air inlet pipe (455) and the powder inlet pipe (456) are both in communication with the interior of the powder delivery barrel (451).

7. The laser cladding device according to claim 1, characterized in that: A sliding groove (457) is provided on the corresponding surface of the connecting rod (453) and the support plate (452), and a pin shaft (458) is provided on the corresponding surface of the support plate (452). The pin shaft (458) is slidably connected to the inside of the sliding groove (457).

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