A laser cladding method and apparatus suitable for multiple workpieces

Abstract

The application discloses a kind of laser cladding suitable for multiple workpieces and processing method thereof, it is related to laser cladding device technical field, to solve the existing laser cladding device can only realize the laser cladding operation of single workpiece, its laser cladding efficiency is low, even if there is realization multiple workpiece's laser cladding device it cannot adjust different powder according to different laser cladding material needs Different powder problems, the side of the cladding machine tool is respectively equipped with three powder feeders, the upper end of the cladding machine tool is equipped with batch laser cladding mechanism, the inner side of the upper end of the batch laser cladding mechanism is equidistantly equipped with three mechanical arms, the lower end of the mechanical arm is fixedly installed with laser cladding head, the powder outlet end of the powder feeder is sealingly installed with total air outlet pipe, the outer side of the laser cladding head is sealingly installed with powder inlet pipe, and the powder inlet pipe and the total air outlet pipe are sealingly connected through a shunt valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cladding device, and particularly relates to a laser cladding device suitable for multiple workpieces and a processing method thereof. BACKGROUND

[0002] The powder covering device for laser cladding is an important component in the laser cladding technology, which is responsible for uniformly covering the powder material on the surface of the base material so as to perform the cladding treatment by the laser beam. The powder covering device for laser cladding usually comprises a powder feeding system, a control system and auxiliary equipment and the like. The powder feeding system is responsible for delivering the powder material to the action area of the laser beam according to the predetermined speed and quantity, and the control system is responsible for adjusting the powder feeding speed, powder flow and the like, so as to ensure the stability and quality of the cladding process. The powder covering device for laser cladding is widely applied in the fields of automobile manufacturing, petrochemical industry, aerospace, mechanical manufacturing and repair and the like. It can perform the surface modification treatment on various metal and non-metal base materials, and improve the wear resistance, corrosion resistance, heat resistance and oxidation resistance and the like of the base materials.

[0003] Chinese patent publication No. CN208617980U discloses a laser cladding device, and relates to the technical field of laser processing. The laser cladding device comprises a support, a moving mechanism and a cladding mechanism. The moving mechanism is connected to the top of the support through a first driving mechanism and can slide relative to the first driving mechanism along a first horizontal direction. The top of the cladding mechanism is slidably connected to the moving mechanism along a second horizontal direction, which is perpendicular to the first horizontal direction. The mechanism for sliding in the laser cladding device does not occupy the processing space at the bottom of the support, greatly expands the product processing space, and does not greatly limit the size of the workpiece to be processed.

[0004] The prior art in the above has the following defects: it can only realize the laser cladding operation on a single workpiece, and the laser cladding efficiency is low. Even if there is a laser cladding device for multiple workpieces, it cannot adjust different powders according to different laser cladding material requirements. Therefore, the present application provides a laser cladding device suitable for multiple workpieces and a processing method thereof to solve the above problems. SUMMARY

[0005] The present application aims to provide a laser cladding device suitable for multiple workpieces and a processing method thereof to solve the problem that the existing laser cladding device can only realize the laser cladding operation on a single workpiece, and the laser cladding efficiency is low, even if there is a laser cladding device for multiple workpieces, it cannot adjust different powders according to different laser cladding material requirements.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a laser cladding system suitable for multiple workpieces, comprising a cladding machine tool, three powder feeders respectively installed on one side of the cladding machine tool, a batch laser cladding mechanism installed at the upper end of the cladding machine tool, three robotic arms equidistantly installed on the inner side of the upper end of the batch laser cladding mechanism, a laser cladding head fixedly installed at the lower end of the robotic arms, a main air outlet pipe sealed at the powder outlet end of the powder feeder, a powder inlet pipe sealed at the outer side of the laser cladding head, and a powder inlet pipe and the main air outlet pipe being sealed and connected by a diversion valve;

[0007] Support plates are fixedly installed on the lower sides of the front and rear ends of the cladding machine tool. A batch laser cladding mechanism drive screw is installed above the support plate. A laser cladding frame is installed above the batch laser cladding mechanism drive screw. The batch laser cladding mechanism includes a laser cladding frame, a robotic arm drive screw, a robotic arm sliding block, a robotic arm, a laser cladding head, and a powder inlet pipe.

[0008] Preferably, a laser is installed on the rear side of the cladding machine tool, a fixed seat is installed on one side of the upper end of the cladding machine tool, a sliding seat is slidably installed on the other side of the upper end of the cladding machine tool, and a positioning chuck is installed on the inner side of the fixed seat and the sliding seat.

[0009] Preferably, a robotic arm drive screw is installed on the inner side of the upper end of the laser cladding frame, three robotic arm sliding blocks are installed below the robotic arm drive screw, and a robotic arm is fixedly installed below the robotic arm sliding blocks.

[0010] Preferably, the robotic arm includes a robotic arm mounting base, a first drive rod, a second drive rod, a third drive rod, a laser cladding head, a linkage seat, a first electric telescopic cylinder, a second electric telescopic cylinder, a third electric telescopic cylinder, and a fourth electric telescopic cylinder. The robotic arm mounting base is located at the upper end of the robotic arm and is rotatably connected to the first drive rod. The second drive rod is rotatably mounted below the first drive rod, the linkage seat is rotatably mounted below the second drive rod, and the third drive rod is rotatably mounted below the linkage seat.

[0011] Preferably, one side of the mechanical arm fixing seat is provided with a first electric telescopic cylinder, the upper end of the first electric telescopic cylinder is rotatably connected with the mechanical arm fixing seat, the lower end of the first electric telescopic cylinder is rotatably connected with the lower end of the first driving rod, one side of the first driving rod and the second driving rod is provided with a second electric telescopic cylinder, the upper end of the second electric telescopic cylinder is rotatably connected with the middle position of one side of the first driving rod, the lower end of the second electric telescopic cylinder is rotatably connected with one side of the upper end of the second driving rod, one side of the second driving rod and the linkage seat is provided with a third electric telescopic cylinder, the upper end of the third electric telescopic cylinder is rotatably connected with the middle position of the other side of the second driving rod, the lower end of the third electric telescopic cylinder is rotatably connected with one side of the lower end of the linkage seat, one side of the third driving rod and the linkage seat is provided with a fourth electric telescopic cylinder, the upper end of the fourth electric telescopic cylinder is rotatably connected with one side of the upper end of the linkage seat, the lower end of the fourth electric telescopic cylinder is rotatably connected with the middle position of one side of the third driving rod.

[0012] Preferably, one side of the total air outlet pipe is sealingly provided with a total air outlet pipe valve, one side of the powder inlet pipe is sealingly provided with a powder inlet pipe valve, one side of the powder inlet pipe valve is provided with a flow meter, and the flow meter is sealingly connected with the powder inlet pipe.

[0013] Preferably, the front side and the rear side of the cladding machine are fixedly provided with ground rails, the upper side of the ground rails is slidingly provided with a feeding mechanism, the feeding mechanism comprises a feeding mechanism gantry, an extension frame, a feeding mechanism electric telescopic cylinder fixing plate, a feeding mechanism electric telescopic cylinder, a clamping electric telescopic cylinder and a flexible clamping mechanism, both ends of the feeding mechanism are provided with the feeding mechanism gantry, the feeding mechanism gantry is slidingly connected with the ground rails, the upper side of the feeding mechanism gantry is fixedly provided with the feeding mechanism electric telescopic cylinder fixing plate, the feeding mechanism electric telescopic cylinder is fixedly arranged between the two feeding mechanism electric telescopic cylinder fixing plates, the upper end and the lower end of the feeding mechanism gantry are provided with the extension frame on the front side and the rear side, and the two sides of the extension frame are fixedly connected with the feeding mechanism gantry.

[0014] Preferably, three flexible clamping mechanisms are equidistantly arranged below the inner side of the feeding mechanism gantry, the flexible clamping mechanism comprises a mounting frame, a flexible clamping jaw driving lead screw, a flexible clamping jaw sliding block and a flexible clamping jaw, the upper end of the clamping electric telescopic cylinder is fixedly connected with the feeding mechanism gantry, the lower end of the clamping electric telescopic cylinder is fixedly connected with the mounting frame, the lower side of the mounting frame is provided with the flexible clamping jaw driving lead screw, the lower side of the flexible clamping jaw driving lead screw is drivingly provided with the flexible clamping jaw sliding block, and the lower side of the flexible clamping jaw sliding block is provided with the flexible clamping jaw.

[0015] A processing method suitable for laser cladding of multiple workpieces, comprising the following steps:

[0016] Step one: use the material truck to transport the workpiece that needs laser cladding to the lower part of the feeding mechanism, adjust the distance between the two feeding mechanism gantries according to the length of the three laser cladding workpieces, extend the feeding mechanism electric telescopic cylinder, the feeding mechanism electric telescopic cylinder drives the gap between the feeding mechanism electric telescopic cylinder fixed plates above the feeding mechanism gantry to shorten, so as to drive the three telescopic frames to extend or shrink, after the adjustment is completed, move the feeding mechanism to the middle position above the three workpieces, extend the clamping electric telescopic cylinder, the clamping electric telescopic cylinder drives the flexible clamping mechanism to move down, drives the flexible clamping jaw drive screw below the mounting frame, the flexible clamping jaw drive screw drives the two flexible clamping jaw sliders below to move close or far away, and then the flexible clamping jaw is contracted to clamp the two ends of the workpiece, after clamping is completed, the clamping electric telescopic cylinder is retracted to make the workpiece higher than the cladding machine and move to the upper side of the cladding machine, the clamping electric telescopic cylinder is extended and the three sliding seats are adjusted, the three workpieces are clamped to the upper side of the cladding machine respectively, and the feeding mechanism is driven to move away from the cladding machine;

[0017] Step two: drive the batch laser cladding mechanism drive screw to drive the batch laser cladding mechanism to move to one side above the cladding machine, drive the three mechanical arms to move to the upper side of the three workpieces at the same time, start the laser and the powder feeder, according to the different workpiece materials, different degrees of powder can be selected, the powder output by the powder feeder passes through the total air outlet pipe and enters the shunt valve through the total air outlet pipe valve, the shunt valve divides the powder into three powder inlet pipes, the three powder inlet pipes correspond to three laser cladding heads respectively, according to the requirements of laser cladding operation, different powder inlet pipes can be selected, the powder enters the powder inlet pipe and passes through the powder inlet pipe valve and the flowmeter, the flowmeter monitors the powder flow in real time, and finally the powder enters the corresponding laser cladding head;

[0018] Step three: the position of the laser cladding head is accurately adjusted through the cooperation of the batch laser cladding mechanism drive screw and the first, second, third and fourth electric telescopic cylinders of the mechanical arm, so that the laser cladding head can perform laser cladding operation.

[0019] Compared with the prior art, the beneficial effects of the present application are:

[0020] 1. This invention drives a batch laser cladding mechanism. The drive screw moves the batch laser cladding mechanism to one side above the cladding machine. The drive arm sliding block moves three robotic arms simultaneously in the same direction above three workpieces. The laser and powder feeder are activated. Through the cooperation of the first, second, third, and fourth electric telescopic cylinders of the drive screw and robotic arms, the position of the laser cladding head is precisely adjusted, allowing the laser cladding head to perform laser cladding operations. This solves the problem that existing laser cladding devices can only perform laser cladding operations on a single workpiece, resulting in low laser cladding efficiency.

[0021] 2. This invention allows for the selection of different powder amounts based on the different materials of the workpiece. The powder output from the powder feeder passes through the main air outlet pipe and the main air outlet pipe valve into the diversion valve. The diversion valve distributes the powder into three powder inlet pipes, each corresponding to a laser cladding head. Different powder inlet pipes can be connected according to the requirements of the laser cladding operation. The powder enters the powder inlet pipe and passes through the powder inlet pipe valve and flow meter. The flow meter monitors the powder flow rate in real time. Finally, the powder enters the corresponding laser cladding head, solving the problem that existing laser cladding devices cannot adjust the powder according to the different laser cladding materials.

[0022] 3. In this invention, a material transport vehicle is used to transport the workpieces to be laser cladding to the area below the loading mechanism. The distance between the two loading mechanism gantry frames is adjusted according to the length of the three laser cladding workpieces. The electric telescopic cylinder of the loading mechanism is extended and retracted. The electric telescopic cylinder of the loading mechanism drives the gap between the fixed plates of the electric telescopic cylinder of the loading mechanism above the loading mechanism gantry frame to shorten, thereby causing the three telescopic frames to extend or retract. After adjustment, the loading mechanism is moved to the middle position above the three workpieces. The electric telescopic cylinder of the clamping mechanism is extended. The electric telescopic cylinder of the clamping mechanism drives the flexible clamping mechanism to move down, driving the flexible jaw drive screw below the mounting frame. The flexible jaw drive screw drives the two flexible jaw sliders below to move closer or further apart. Then, the flexible jaws are retracted to clamp the two ends of the workpiece. After clamping, the electric telescopic cylinder of the clamping mechanism is retracted to make the workpiece higher than the cladding machine and move it above the cladding machine. The electric telescopic cylinder of the clamping mechanism is extended and the three sliding seats are adjusted to clamp the three workpieces above the cladding machine respectively. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the batch laser cladding mechanism in this invention;

[0025] Figure 3 In this invention Figure 1 A magnified view of a portion of area A;

[0026] Figure 4 Figure is the structure diagram of the feeding mechanism in the application;

[0027] Figure 5 Figure is the structure diagram of the gantry of the feeding mechanism in the application.

[0028] In the figure: 1, cladding machine; 2, laser; 3, powder feeder; 4, ground rail; 5, feeding mechanism; 6, fixed seat; 7, sliding seat; 8, positioning chuck; 9, pipe support seat; 10, support plate; 11, batch laser cladding mechanism drive screw; 12, batch laser cladding mechanism; 13, laser cladding frame; 14, mechanical arm drive screw; 15, mechanical arm sliding block; 16, mechanical arm; 17, mechanical arm fixed seat; 18, first drive rod; 19, second drive rod; 20, third drive rod; 21, laser cladding head; 22, linkage seat; 23, first electric telescopic cylinder; 24, second electric telescopic cylinder; 25, third electric telescopic cylinder; 26, fourth electric telescopic cylinder; 27, total air outlet pipe; 28, total air outlet pipe valve; 29, shunt valve; 30, powder inlet pipe; 31, powder inlet pipe valve; 32, flowmeter; 33, feeding mechanism gantry; 34, telescopic frame; 35, feeding mechanism electric telescopic cylinder fixed plate; 36, feeding mechanism electric telescopic cylinder; 37, clamping electric telescopic cylinder; 38, mounting frame; 39, flexible clamping jaw drive screw; 40, flexible clamping jaw sliding block; 41, flexible clamping jaw; 42, flexible clamping mechanism. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0030] Please refer to Figures 1-5 An embodiment provided by the application: a laser cladding suitable for multiple workpieces, comprising a cladding machine 1, three powder feeders 3 are respectively installed on one side of the cladding machine 1, a batch laser cladding mechanism 12 is installed on the upper end of the cladding machine 1, three mechanical arms 16 are equidistantly installed on the inner side of the upper end of the batch laser cladding mechanism 12, a laser cladding head 21 is fixedly installed on the lower end of the mechanical arm 16, a total air outlet pipe 27 is sealingly installed at the powder outlet end of the powder feeder 3, a powder inlet pipe 30 is sealingly installed on the outer side of the laser cladding head 21, and the powder inlet pipe 30 and the total air outlet pipe 27 are sealingly connected through a shunt valve 29.

[0031] The driving batch laser cladding mechanism drives the lead screw 11 to move the batch laser cladding mechanism 12 to one side above the cladding machine 1, the driving mechanical arm sliding block 15 drives the three mechanical arms 16 to move simultaneously and in the same direction above the three workpieces, the laser 2 and the powder feeder 3 are started, different degrees of powder can be selected according to the different materials of the workpieces, the powder output by the three laser cladding heads 21 is selected through the control panel, the control panel controls the opening of the powder feeder 3 and the air volume and air flow rate, controls the opening and closing of the air outlet pipe valve 28, the flow valve 29 and the powder inlet pipe valve 31, and receives the flow data collected by the flow meter 32, the powder output by the powder feeder 3 passes through the total air outlet pipe 27, enters the flow valve 29 through the total air outlet pipe valve 28, the flow valve 29 divides the powder into three powder inlet pipes 30, the three powder inlet pipes 30 correspond to the three laser cladding heads 21 respectively, different powder inlet pipes 30 can be selected according to the requirements of laser cladding operation, the powder enters the powder inlet pipe 30 and passes through the powder inlet pipe valve 31 and the flow meter 32, the flow meter 32 monitors the powder flow in real time, and finally the powder enters the corresponding laser cladding head 21, the position of the laser cladding head 21 is accurately adjusted through the cooperation of the driving lead screw 11 of the batch laser cladding mechanism and the first electric telescopic cylinder 23, the second electric telescopic cylinder 24, the third electric telescopic cylinder 25 and the fourth electric telescopic cylinder 26, so that the laser cladding head 21 performs laser cladding operation.

[0032] Please refer to Figures 1-2 The rear side of the cladding machine 1 is provided with a laser 2, one side of the upper end of the cladding machine 1 is provided with a fixed seat 6, the other side of the upper end of the cladding machine 1 is provided with a sliding seat 7, and the inner sides of the fixed seat 6 and the sliding seat 7 are provided with a positioning chuck 8. The lower sides of the front and rear ends of the cladding machine 1 are fixedly provided with support plates 10, the upper sides of the support plates 10 are provided with a batch laser cladding mechanism driving lead screw 11, the upper sides of the batch laser cladding mechanism driving lead screw 11 are drivingly provided with a laser cladding frame 13, and the batch laser cladding mechanism 12 comprises the laser cladding frame 13, a mechanical arm driving lead screw 14, a mechanical arm sliding block 15, three mechanical arms 16, laser cladding heads 21 and powder inlet pipes 30.

[0033] Please refer to Figure 2The inner side of the upper end of the laser cladding frame 13 is provided with a mechanical arm driving lead screw 14, and three mechanical arm sliding blocks 15 are drivingly installed below the mechanical arm driving lead screw 14. A mechanical arm 16 is fixedly installed below the mechanical arm sliding blocks 15. The mechanical arm 16 comprises a mechanical arm fixed seat 17, a first driving rod 18, a second driving rod 19, a third driving rod 20, a laser cladding head 21, a linkage seat 22, a first electric telescopic cylinder 23, a second electric telescopic cylinder 24, a third electric telescopic cylinder 25 and a fourth electric telescopic cylinder 26. The mechanical arm fixed seat 17 is located at the upper end of the mechanical arm 16. The mechanical arm fixed seat 17 is rotatably connected with the first driving rod 18. The second driving rod 19 is rotatably installed below the first driving rod 18. The linkage seat 22 is rotatably installed below the second driving rod 19. The third driving rod 20 is rotatably installed below the linkage seat 22. One side of the mechanical arm fixed seat 17 is provided with the first electric telescopic cylinder 23. The upper end of the first electric telescopic cylinder 23 is rotatably connected with the mechanical arm fixed seat 17. The lower end of the first electric telescopic cylinder 23 is rotatably connected with the lower end of the first driving rod 18. One side of the first driving rod 18 and the second driving rod 19 is provided with the second electric telescopic cylinder 24. The upper end of the second electric telescopic cylinder 24 is rotatably connected with the middle position of the one side of the first driving rod 18. The lower end of the second electric telescopic cylinder 24 is rotatably connected with the one side of the upper end of the second driving rod 19. One side of the second driving rod 19 and the linkage seat 22 is provided with the third electric telescopic cylinder 25. The upper end of the third electric telescopic cylinder 25 is rotatably connected with the middle position of the other side of the second driving rod 19. The lower end of the third electric telescopic cylinder 25 is rotatably connected with the one side of the lower end of the linkage seat 22. One side of the linkage seat 22 and the third driving rod 20 is provided with the fourth electric telescopic cylinder 26. The upper end of the fourth electric telescopic cylinder 26 is rotatably connected with the one side of the upper end of the linkage seat 22. The lower end of the fourth electric telescopic cylinder 26 is rotatably connected with the middle position of the one side of the third driving rod 20.

[0034] Please refer to Figure 3 One side of the total air outlet pipe 27 is sealingly provided with a total air outlet pipe valve 28. One side of the powder inlet pipe 30 is sealingly provided with a powder inlet pipe valve 31. One side of the powder inlet pipe valve 31 is provided with a flow meter 32. The flow meter 32 is sealingly connected with the powder inlet pipe 30.

[0035] Please refer to Figure 1 and Figure 4 and Figure 5The front side and the rear side of the cladding machine tool 1 are fixedly installed with ground rails 4, the upper side of the ground rails 4 is slidably installed with a feeding mechanism 5, the feeding mechanism 5 comprises a feeding mechanism gantry 33, telescopic frames 34, feeding mechanism electric telescopic cylinder fixed plates 35, feeding mechanism electric telescopic cylinders 36, material clamping electric telescopic cylinders 37 and flexible clamping mechanisms 42, both ends of the feeding mechanism 5 are installed with the feeding mechanism gantry 33, the feeding mechanism gantry 33 is slidably connected with the ground rails 4, the upper side of the feeding mechanism gantry 33 is fixedly installed with the feeding mechanism electric telescopic cylinder fixed plates 35, both feeding mechanism electric telescopic cylinder fixed plates 35 are fixedly installed with the feeding mechanism electric telescopic cylinders 36, the upper end and the lower end of the feeding mechanism gantry 33 are installed with the telescopic frames 34 on the front side and the rear side, both sides of the telescopic frames 34 are fixedly connected with the feeding mechanism gantry 33, the lower side of the inner side of the feeding mechanism gantry 33 is equidistantly installed with three flexible clamping mechanisms 42, the flexible clamping mechanism 42 comprises a mounting frame 38, a flexible clamping jaw driving lead screw 39, a flexible clamping jaw sliding block 40 and a flexible clamping jaw 41, the upper end of the material clamping electric telescopic cylinder 37 is fixedly connected with the feeding mechanism gantry 33, the lower end of the material clamping electric telescopic cylinder 37 is fixedly connected with the mounting frame 38, the lower side of the mounting frame 38 is installed with the flexible clamping jaw driving lead screw 39, the lower side of the flexible clamping jaw driving lead screw 39 is drivingly installed with the flexible clamping jaw sliding block 40, the lower side of the flexible clamping jaw sliding block 40 is installed with the flexible clamping jaw 41.

[0036] A processing method suitable for laser cladding of multiple workpieces, comprising the following steps:

[0037] Step one: use the material transport vehicle to transport the workpieces needing laser cladding to the lower side of the feeding mechanism 5, adjust the distance between the two feeding mechanism gantries 33 according to the length of the three laser cladded workpieces, extend the feeding mechanism electric telescopic cylinders 36, the feeding mechanism electric telescopic cylinders 36 drive the gap between the feeding mechanism electric telescopic cylinder fixed plates 35 above the feeding mechanism gantry 33 to shorten, thereby driving the three telescopic frames 34 to extend or contract, after the adjustment is completed, move the feeding mechanism 5 to the upper side of the middle position of the three workpieces, extend the material clamping electric telescopic cylinder 37, the material clamping electric telescopic cylinder 37 drives the flexible clamping mechanism 42 to move downward, drives the flexible clamping jaw driving lead screw 39 below the mounting frame 38, the flexible clamping jaw driving lead screw 39 drives the two flexible clamping jaw sliding blocks 40 below to move close to or away from each other, and then clamps the two ends of the workpiece by contracting the flexible clamping jaw 41, after the clamping is completed, contract the material clamping electric telescopic cylinder 37 to make the workpiece higher than the cladding machine tool 1 and move to the upper side of the cladding machine tool 1, extend the material clamping electric telescopic cylinder 37 and adjust the three sliding seats 7, clamp the three workpieces to the upper side of the cladding machine tool 1 respectively, and drive the feeding mechanism 5 to move to the side away from the cladding machine tool 1;

[0038] Step two: drive the batch laser cladding mechanism drive screw rod 11 to move the batch laser cladding mechanism 12 to the side above the cladding machine tool 1, drive the mechanical arm sliding block 15 to drive the three mechanical arms 16 to move to the top of the three workpieces at the same time, start the laser 2 and the powder feeder 3, according to the different workpiece materials, different degrees of powder can be selected respectively, the powder output by the powder feeder 3 passes through the total air outlet pipe 27, passes through the total air outlet pipe valve 28 and enters the shunt valve 29, the shunt valve 29 shunts the powder to the three powder inlet pipes 30, the three powder inlet pipes 30 correspond to the three laser cladding heads 21 respectively, according to the requirements of laser cladding operation, different powder inlet pipes 30 can be selected to be connected respectively, the powder enters the powder inlet pipe 30 and passes through the powder inlet pipe valve 31 and the flow meter 32, the flow meter 32 monitors the powder flow in real time, and finally the powder enters the corresponding laser cladding head 21;

[0039] Step three: the position of the laser cladding head 21 is accurately adjusted through the cooperation of the batch laser cladding mechanism drive screw rod 11 and the first electric telescopic cylinder 23, the second electric telescopic cylinder 24, the third electric telescopic cylinder 25 and the fourth electric telescopic cylinder 26 of the mechanical arm 16, so that the laser cladding head 21 performs laser cladding operation.

[0040] It will be obvious to a person skilled in the art that the application is not limited to the details of the above-described exemplary embodiments but can be implemented in other embodiments without departing from the scope of the application. The scope of the application is defined by the appended claims rather than by the description of the exemplary embodiments above and therefore all changes and modifications that come within the meaning and range of equivalents of the claims are to be embraced by the application. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

Claims

1. A laser cladding machine (1) suitable for multi-workpiece laser cladding, characterized in that: The side of the cladding machine tool (1) is respectively provided with three powder feeders (3), the upper end of the cladding machine tool (1) is provided with a batch laser cladding mechanism (12), the inner side of the upper end of the batch laser cladding mechanism (12) is provided with three mechanical arms (16) at equal intervals, the lower end of the mechanical arm (16) is fixedly provided with a laser cladding head (21), the powder outlet end of the powder feeder (3) is sealingly provided with a total air outlet pipe (27), the outer side of the laser cladding head (21) is sealingly provided with a powder inlet pipe (30), the powder inlet pipe (30) and the total air outlet pipe (27) are sealingly connected through a flow divider (29). The lower side of the front and rear ends of the cladding machine tool (1) is fixedly provided with a support plate (10), the upper side of the support plate (10) is provided with a batch laser cladding mechanism drive lead screw (11), the upper side of the batch laser cladding mechanism drive lead screw (11) is drivingly provided with a laser cladding frame (13), the batch laser cladding mechanism (12) comprises the laser cladding frame (13), a mechanical arm drive lead screw (14), a mechanical arm sliding block (15), the mechanical arm (16), the laser cladding head (21) and the powder inlet pipe (30). The mechanical arm (16) comprises a mechanical arm fixed seat (17), a first drive rod (18), a second drive rod (19), a third drive rod (20), the laser cladding head (21), a linkage seat (22), a first electric telescopic cylinder (23), a second electric telescopic cylinder (24), a third electric telescopic cylinder (25) and a fourth electric telescopic cylinder (26), the mechanical arm fixed seat (17) is located at the upper end of the mechanical arm (16), the mechanical arm fixed seat (17) is rotationally connected with the first drive rod (18), the lower side of the first drive rod (18) is rotationally provided with the second drive rod (19), the lower side of the second drive rod (19) is rotationally provided with the linkage seat (22), the lower side of the linkage seat (22) is rotationally provided with the third drive rod (20). The side of the total air outlet pipe (27) is sealingly provided with a total air outlet pipe valve (28), the side of the powder inlet pipe (30) is sealingly provided with a powder inlet pipe valve (31), the side of the powder inlet pipe valve (31) is provided with a flowmeter (32), the flowmeter (32) is sealingly connected with the powder inlet pipe (30).

2. The laser cladding system for multiple workpieces according to claim 1, wherein: The rear side of the cladding machine tool (1) is provided with a laser (2), the side of the upper end of the cladding machine tool (1) is provided with a fixed seat (6), the other side of the upper end of the cladding machine tool (1) is slidingly provided with a sliding seat (7), the inner side of the fixed seat (6) and the sliding seat (7) is provided with a positioning chuck (8).

3. The laser cladding system for multiple workpieces of claim 2, wherein: The inner side of the upper end of the laser cladding frame (13) is provided with a mechanical arm drive lead screw (14), the lower side of the mechanical arm drive lead screw (14) is drivingly provided with three mechanical arm sliding blocks (15), the lower side of the mechanical arm sliding block (15) is fixedly provided with the mechanical arm (16).

4. The laser cladding system for multiple workpieces of claim 3, wherein: The side of the mechanical arm fixing seat (17) is provided with a first electric telescopic cylinder (23), the upper end of the first electric telescopic cylinder (23) is rotatably connected with the mechanical arm fixing seat (17), the lower end of the first electric telescopic cylinder (23) is rotatably connected with the lower end of the first driving rod (18), one side of the first driving rod (18) and the second driving rod (19) is provided with a second electric telescopic cylinder (24), the upper end of the second electric telescopic cylinder (24) is rotatably connected with the middle position of one side of the first driving rod (18), the lower end of the second electric telescopic cylinder (24) is rotatably connected with one side of the upper end of the second driving rod (19), one side of the second driving rod (19) and the linkage seat (22) is provided with a third electric telescopic cylinder (25), the upper end of the third electric telescopic cylinder (25) is rotatably connected with the middle position of the other side of the second driving rod (19), the lower end of the third electric telescopic cylinder (25) is rotatably connected with one side of the lower end of the linkage seat (22), one side of the linkage seat (22) is provided with a fourth electric telescopic cylinder (26), the upper end of the fourth electric telescopic cylinder (26) is rotatably connected with one side of the upper end of the linkage seat (22), the lower end of the fourth electric telescopic cylinder (26) is rotatably connected with the middle position of one side of the third driving rod (20).

5. A laser cladding system for multiple workpieces as claimed in claim 4, wherein: The front side and the rear side of the cladding machine tool (1) are fixedly provided with ground rails (4), the upper side of the ground rails (4) is slidably provided with a feeding mechanism (5), the feeding mechanism (5) comprises a feeding mechanism gantry (33), an extension frame (34), a feeding mechanism electric telescopic cylinder fixing plate (35), a feeding mechanism electric telescopic cylinder (36), a clamping electric telescopic cylinder (37) and a flexible clamping mechanism (42), both ends of the feeding mechanism (5) are provided with the feeding mechanism gantry (33), the feeding mechanism gantry (33) is slidably connected with the ground rails (4), the upper side of the feeding mechanism gantry (33) is fixedly provided with the feeding mechanism electric telescopic cylinder fixing plate (35), the feeding mechanism electric telescopic cylinder fixing plate (35) is fixedly provided between two feeding mechanism electric telescopic cylinder fixing plates (35), the feeding mechanism electric telescopic cylinder (36) is fixedly provided between two feeding mechanism electric telescopic cylinder fixing plates (35), the upper end and the lower end of the feeding mechanism gantry (33) are provided with the extension frame (34) on the front side and the rear side, and the two sides of the extension frame (34) are fixedly connected with the feeding mechanism gantry (33).

6. A laser cladding system for multiple workpieces as claimed in claim 5, wherein: The lower side of the gantry of the feeding mechanism (33) is equidistantly provided with three flexible clamping mechanisms (42), the flexible clamping mechanism (42) comprises a mounting frame (38), a flexible clamping jaw driving lead screw (39), a flexible clamping jaw sliding block (40) and a flexible clamping jaw (41), the upper end of the clamping electric telescopic cylinder (37) is fixedly connected with the gantry of the feeding mechanism (33), the lower end of the clamping electric telescopic cylinder (37) is fixedly connected with the mounting frame (38), the lower side of the mounting frame (38) is provided with the flexible clamping jaw driving lead screw (39), the lower side of the flexible clamping jaw driving lead screw (39) is drivingly provided with the flexible clamping jaw sliding block (40), and the lower side of the flexible clamping jaw sliding block (40) is provided with the flexible clamping jaw (41).

7. The method of claim 6, wherein the method is suitable for laser cladding of multiple workpieces. The method comprises the following steps: Step one: use the material conveying vehicle to transport the workpieces needing laser cladding to the lower side of the feeding mechanism (5), adjust the distance between the two feeding mechanism gantries (33) according to the length of the three workpieces, extend or retract the feeding mechanism electric telescopic cylinder (36), shorten the gap between the feeding mechanism electric telescopic cylinder fixing plates (35) on the upper side of the feeding mechanism gantry (33) driven by the feeding mechanism electric telescopic cylinder (36), thereby driving the three telescopic frames (34) to extend or retract, after the adjustment is completed, move the feeding mechanism (5) to the middle position above the three workpieces, extend the clamping electric telescopic cylinder (37), drive the flexible clamping mechanism (42) to move downward, drive the flexible clamping jaw driving lead screw (39) below the mounting frame (38), drive the two flexible clamping jaw sliding blocks (40) below the flexible clamping jaw driving lead screw (39) to move close to or away from each other, and then clamp the two ends of the workpiece by retracting the flexible clamping jaw (41), after the clamping is completed, retract the clamping electric telescopic cylinder (37) to make the workpiece higher than the cladding machine tool (1) and move to the upper side of the cladding machine tool (1), extend the clamping electric telescopic cylinder (37) and adjust the three sliding seats (7), clamp the three workpieces to the upper side of the cladding machine tool (1) respectively, and drive the feeding mechanism (5) to move away from the cladding machine tool (1); Step two: drive the batch laser cladding mechanism driving lead screw (11) to drive the batch laser cladding mechanism (12) to move to one side above the cladding machine tool (1), drive the mechanical arm sliding block (15) to drive the three mechanical arms (16) to move to the upper side of the three workpieces at the same time and in the same direction, start the laser (2) and the powder feeder (3), and different degrees of powder can be selected according to the different materials of the workpieces, the powder output by the powder feeder (3) passes through the total air outlet pipe (27), passes through the total air outlet pipe valve (28) into the shunt valve (29), the shunt valve (29) divides the powder into the three powder inlet pipes (30), the three powder inlet pipes (30) correspond to the three laser cladding heads (21) respectively, different powder inlet pipes (30) can be selected according to the requirements of the laser cladding operation, the powder enters the powder inlet pipe (30) and passes through the powder inlet pipe valve (31) and the flowmeter (32), the flowmeter (32) monitors the powder flow in real time, and finally the powder enters the corresponding laser cladding head (21). Step three: the position of the laser cladding head (21) is precisely adjusted by the cooperation of the first electric telescopic cylinder (23), the second electric telescopic cylinder (24), the third electric telescopic cylinder (25) and the fourth electric telescopic cylinder (26) driven by the batch laser cladding mechanism, so that the laser cladding head (21) performs laser cladding work.

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