Tailored blank laser welding machining device for dissimilar material plates

Abstract

The utility model relates to the technical field of dissimilar material plate tailor-welding processing devices, in particular to a dissimilar material plate tailor-welding laser processing device which comprises a plate conveying assembly, a tailor-welding laser assembly, a guide rail, a control platform and a magnetic induction heating assembly. The bottom of the plate conveying assembly is installed on the working ground, and the guide rail is installed on one side of the plate conveying assembly and is parallel to the conveying direction of tailor-welded plates. The electromagnetic induction heating assembly is mounted below the middle part of the plate conveying assembly; when the laser tailored blank welding device is used, flexible treatment of different temperatures, different heating times and different cooling speeds can be conducted on a welding seam area, the technical problems that performance differences of welding joints of dissimilar material plates are large, and the performance of the plates is not coordinated are solved, the production efficiency is improved, and the production cost is reduced. And the manual operation process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heterogeneous plate welding processing devices, in particular to a heterogeneous material plate laser welding processing device. Background Art

[0002] In the prior art, welding of dissimilar materials usually requires preheating before welding and heat treatment after welding. The current heat treatment method is mostly completed by a heat treatment furnace, that is, overall heat treatment. The overall heat treatment in the furnace is easy to ensure uniform temperature everywhere, which has great advantages when used for heat treatment of materials with consistent initial properties. However, the above method cannot solve the heat treatment of dissimilar materials laser welding with different initial properties. The specific reasons are as follows:

[0003] First, the optimal heat treatment temperature is determined by its initial state. During the welding process, the structure and grain of the metal in the molten zone and heat-affected zone of the dissimilar welded plate have changed, resulting in different optimal temperatures for the base material, heat-affected zone and molten zone. The above-mentioned overall heat treatment cannot apply three temperatures to the base material, molten zone and heat-affected zone respectively, so only a compromise temperature can be found, resulting in the performance of the base material, molten zone and heat-affected zone not being optimal.

[0004] Secondly, the furnace heating method is inefficient, energy-intensive and polluting, and has great limitations on the length of the plate. Moreover, the preheating, laser welding and post-weld heat treatment of the plate are completed under different devices, which is time-consuming, labor-intensive and has low production efficiency. Therefore, there is an urgent need for a new type of processing device for laser welding plates of dissimilar materials to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a laser welding processing device for dissimilar material plates, which can flexibly process the weld area with different temperatures, different heating times, and different cooling speeds when in use, thereby solving the technical problems of large performance differences in laser welding joints of dissimilar material plates and inharmonious plate performance, greatly improving production efficiency and reducing the manual operation process.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for laser welding of heterogeneous material plates, comprising a plate conveying assembly, a laser welding assembly, a guide rail, a control platform and a magnetic induction heating assembly; the bottom of the plate conveying assembly is installed on a working surface, the guide rail is installed on one side of the plate conveying assembly and is parallel to the conveying direction of the welded plate; the electromagnetic induction heating assembly is installed at a lower middle position of the plate conveying assembly; one end of the laser welding assembly is slidably connected to the guide rail, and the other end of the laser welding assembly is located above the middle of the plate transmission assembly; the control platform is arranged on the outside of the plate conveying assembly, and is used to control the magnitude of the input current, thereby controlling the temperature of the plate.

[0008] The plate conveying assembly includes a plate conveying machine and conveying rollers; the plate conveying machine is arranged on the ground; a weld heating channel is arranged on the plate conveying machine; conveying roller mounting grooves are respectively arranged on the upper parts of both sides of the weld heating channel; the conveying rollers are respectively and evenly arranged in the mounting grooves on both sides and are rotatably connected to the mounting grooves.

[0009] Furthermore, the weld heating channel is arranged in the middle of the plate conveying machine and is consistent with the plate conveying direction.

[0010] Furthermore, an infrared camera is installed above the rear end of the weld heating channel. The infrared camera is installed together with the plate conveying machine tool to monitor the distribution of the temperature field on the weld surface.

[0011] The electromagnetic induction heating assembly comprises an induction coil and a magnetic conductor; the induction coil is installed in the middle of the weld heating channel, and the magnetic conductor is installed at the center of the electromagnetic induction coil for heating the weld.

[0012] The laser welding assembly includes a laser welding robot arm, a horizontal hydraulic telescopic arm, a horizontal fixed frame, a vertical hydraulic telescopic arm, a vertical fixed frame and a guide rail trolley; the top of the laser welding robot arm is connected to the front end of the horizontal hydraulic telescopic arm; the rear side of the horizontal hydraulic telescopic arm is installed inside the horizontal fixed frame to control the movement of the laser welding robot arm in the horizontal direction; the rear end of the horizontal fixed frame is fixedly connected to the upper end of the vertical hydraulic telescopic arm; the lower part of the vertical hydraulic telescopic arm is installed in the vertical fixed frame to control the movement of the laser welding robot arm in the vertical direction; the bottom of the vertical fixed frame is fixedly installed on the upper surface of the guide rail trolley.

[0013] The bottom of the guide rail trolley used to drive the laser welding assembly to move forward and backward as a whole is slidably connected to the guide rail.

[0014] The beneficial effects of the utility model are as follows: the overall structural design of the laser welding processing device for heterogeneous material plates provided by the utility model is scientific, the operation is simple and convenient, and in the specific operation process, it has the following advantages compared with the prior art:

[0015] 1. When preheating and heat treating the plate, the utility model can flexibly treat the weld area with different temperatures, different heating times, and different cooling speeds, solving the technical problems of large performance differences in laser welding joints of heterogeneous material plates and uncoordinated plate performance; during the heating process, electrical energy is directly converted into internal heat energy of the metal plate, greatly improving energy utilization and heating efficiency;

[0016] 2. The laser welding processing device for heterogeneous material plates of the utility model can simultaneously complete laser welding, plate preheating and post-weld heat treatment of the plates, which greatly improves production efficiency and reduces the manual operation process. At the same time, its production cost is much lower than that of traditional high-temperature tempering furnaces, which is conducive to promotion and use in industry production; the use of infrared cameras for real-time monitoring and feedback control of plate temperature can ensure the temperature control accuracy and stability in plate processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 The structure diagram of the plate conveying assembly in the utility model is shown in FIG. Figure 1 ;

[0019] Figure 3 The structure diagram of the plate conveying assembly in the utility model is shown in FIG. Figure 2 ;

[0020] Figure 4 It is a structural schematic diagram of the plate conveying machine tool in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the conveying roller in the utility model;

[0022] Figure 6 It is a schematic diagram of the structure of the laser welding assembly in the utility model;

[0023] Figure 7 It is a structural schematic diagram of the electromagnetic induction heating component in the utility model;

[0024] The numbers in the figure are: 1-plate conveying assembly, 2-welded plate, 3-infrared camera, 4-laser welding assembly, 5-guide rail, 6-control platform, 7-electromagnetic induction heating assembly, 101-plate conveying machine, 102-conveyor roller, 103-weld heating channel, 104-installation slot, 1021-conveyor roller body, 1022-conveyor roller shaft, 701-electromagnetic induction coil, 702-magnetic conductor, 401-laser welding robot arm, 402-horizontal hydraulic telescopic arm, 403-horizontal fixed frame, 404-vertical hydraulic telescopic arm, 405-vertical fixed frame, 406-guide rail trolley. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions of various embodiments of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. In the description of the utility model, it should be noted that the terms "upper", "lower", "vertical", "horizontal", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. The following is a further detailed description of the utility model through specific implementation examples and in conjunction with the accompanying drawings. Specific embodiment 1:

[0027] In order to solve the problems of low heating efficiency, high energy consumption, time-consuming and labor-intensive, and low production efficiency in the welding process of existing heterogeneous material tailor-welded plates, as shown in the attached manual of the utility model Figure 1 As shown, the utility model provides a laser welding processing device for heterogeneous material plates, which mainly includes a plate conveying component 1, a laser welding component 4, a guide rail 5, a control platform 6 and a magnetic induction heating component 7; the plate conveying component 1 is used for carrying and conveying the welded plate 2. When installed, the bottom of the plate conveying component 1 is installed and arranged on the working ground, and the guide rail 5 for guiding the laser welding component 4 is installed on one side of the plate conveying component 1 and arranged parallel to the conveying direction of the welded plate 2; the electromagnetic induction heating component 7 is used for induction heating the welded plate 2. When installed, the electromagnetic induction heating component 7 is installed at the lower middle part of the plate conveying component 1; the laser welding component 4 is used for welding the welded plate 2, one end of the laser welding component 4 is slidably connected to the guide rail, and the other end of the laser welding component 4 (the position of the welding gun head) is located above the middle part of the plate transmission component 1; the control platform 6 is arranged on the outside of the plate conveying component, and is used to control the magnitude of the input current of the magnetic induction heating component 7, thereby controlling the plate temperature.

[0028] As the specification in this utility model Figure 2 , Instruction Manual Figure 3 And the instruction manual Figure 4As shown, the plate conveying assembly 1 for carrying and conveying the tailored welded plate 2 includes a plate conveying machine 101 and a conveying roller 102; wherein the plate conveying machine 101 is used to install and support the conveying roller 102, and during installation, the plate conveying machine 101 is arranged on the ground; a weld heating channel 103 adapted for the installation of the electromagnetic induction heating assembly 7 is arranged on the plate conveying machine 101; conveying roller mounting grooves 104 are respectively arranged on the upper parts of both sides of the weld heating channel 103; the conveying rollers 102 are respectively evenly arranged in the mounting grooves 104 on both sides and are rotatably connected to the mounting grooves 104; specifically, as shown in the attached manual Figure 5 As shown, the conveying roller 102 is composed of a conveying roller body 1021 and a conveying roller shaft 1022. The conveying roller body 1021 is mounted on the conveying roller shaft 1022 and arranged coaxially with the conveying roller shaft 1022. The conveying roller shaft 1022 is mounted in the mounting groove 104 through a bearing. It should be noted that the weld heating channel 103 is arranged in the middle of the plate conveying machine 101 and is consistent with the plate conveying direction. At the same time, an infrared camera 3 is installed above the rear end of the weld heating channel 103. The infrared camera 3 is installed together with the plate conveying machine 101 to monitor the distribution of the surface temperature field of the weld.

[0029] As the specification in this utility model Figure 7 As shown, the electromagnetic induction heating assembly 7 for heating the joint weld of the tailor-welded plate 2 includes an induction coil 701 and a magnet 702; the induction coil 701 is used to perform induction heating on the magnet 702. During installation, the induction coil 701 is installed in the middle of the weld heating channel 103 and is externally connected to the control platform 6 (the control platform 6 provides current to the induction coil 701), and the magnet 702 is installed at the center of the electromagnetic induction coil 701 for heating the weld.

[0030] As the specification in this utility model Figure 6As shown, the laser welding assembly 4 for performing welding operations on heterogeneous material plates includes a laser welding mechanical arm 401, a horizontal hydraulic telescopic arm 402, a horizontal fixed frame 403, a vertical hydraulic telescopic arm 404, a vertical fixed frame 405 and a guide rail trolley 406; a laser welding gun is installed at the lower part of the laser welding mechanical arm 401. During installation, the top of the laser welding mechanical arm 401 is connected to the front end of the horizontal hydraulic telescopic arm 402; the horizontal fixed frame 403 is used to install and bear the horizontal hydraulic telescopic arm 402. During installation, the horizontal hydraulic telescopic arm 402 The rear side is installed inside the horizontal fixed frame 403 to control the horizontal movement of the laser welding robot arm 401. The rear end of the horizontal fixed frame 403 is fixedly connected to the upper end of the vertical hydraulic telescopic arm 404; the lower part of the vertical hydraulic telescopic arm 404 is installed in the vertical fixed frame 405 to control the vertical movement of the laser welding robot arm 401; during installation, the bottom of the vertical fixed frame 405 is fixedly installed on the upper surface of the guide rail trolley 406; the bottom of the guide rail trolley 406 used to drive the laser welding assembly 4 to move forward and backward as a whole is slidably connected to the guide rail 5.

[0031] The installation and use process of the laser welding processing device for dissimilar material plates of the utility model is as follows:

[0032] 1. The installation process is as follows: First, the installer can install and arrange the plate conveying component. During the specific installation, the bottom of the plate conveying machine 101 can be arranged on the ground; a weld heating channel 103 adapted for the installation of the electromagnetic induction heating component 7 is arranged on the plate conveying machine 101; the weld heating channel 103 is arranged in the middle of the plate conveying machine 101 and is consistent with the plate conveying direction, and conveying roller mounting grooves 104 are respectively arranged on the upper part of both sides of the weld heating channel 103; the two sides of the conveying roller 102 are evenly arranged in the mounting grooves 104 on both sides through bearings, and an infrared camera 3 is installed above the rear end of the weld heating channel 103 to monitor the distribution of the temperature field on the upper surface of the weld. After the above installation is completed, the induction coil 701 can be installed in the middle of the weld heating channel 103 and externally connected to the control platform 6 (the control platform 6 provides current to the induction coil 701), and the magnetic conductor 702 is installed It is installed at the center of the electromagnetic induction coil 701 to heat the weld, and then the laser welding component 4 is assembled. During the specific installation, a laser welding gun for performing welding operations can be installed at the lower part of the laser welding robot arm 401. During the installation, the top of the laser welding robot arm 401 is connected to the front end of the horizontal hydraulic telescopic arm 402; the rear side of the horizontal hydraulic telescopic arm 402 is installed inside the horizontal fixed frame 403 to control the horizontal movement of the laser welding robot arm 401, and the rear end of the horizontal fixed frame 403 is fixedly connected to the upper end of the vertical hydraulic telescopic arm 404; then the lower part of the vertical hydraulic telescopic arm 404 is installed in the vertical fixed frame 405 to control the vertical movement of the laser welding robot arm 401; finally, the bottom of the vertical fixed frame 405 can be fixedly installed on the upper surface of the guide rail trolley 406. At this point, the installation process of the laser welding processing device for dissimilar material plates of the utility model is completed.

[0033] The specific operation steps of the laser welding processing device for dissimilar material plates of the utility model during operation are as follows:

[0034] S1, sending the welded sheet 2 to the laser welding work area through the conveying roller 102 of the sheet conveying assembly 1;

[0035] S2. Input the length L=10m of the tailor-welded sheet 2, the minimum thickness d1=15mm, the maximum thickness d2=20mm, and the preheating temperature T on the control platform 6. S =150℃, the allowable temperature difference between the actual temperature and the preheating temperature is (-40℃, 40℃);

[0036] S3, monitor the weld temperature of the plate through the infrared camera 3, and feed back the weld temperature to the control platform 6 in real time. The control platform 6 adjusts the output current so that the actual temperature is equal to the preheating temperature and maintains the temperature to achieve the effect of preheating the plate;

[0037] S4, adjust the moving direction z of the vertical hydraulic telescopic arm 404, adjust the laser welding mechanical arm 401 to the top of the welding work area, adjust the moving direction y of the horizontal hydraulic telescopic arm 402, adjust the laser welding mechanical arm 401 to the top of the welding work area, control the platform 6 to start the laser welding equipment, and at the same time, the guide rail trolley moves forward in the x direction. The control platform determines whether the current position of the guide rail trolley satisfies x < L. If so, it continues to move forward. If not, it indicates that the laser welding of the entire plate has been completed;

[0038] S5. After laser welding is completed, enter the heat treatment temperature T on the control platform. D , the allowable temperature difference between the actual temperature and the heat treatment temperature is (-40℃, 40℃);

[0039] S6. Monitor the temperature of the plate weld by infrared camera 3, and feed back the weld temperature to the control platform in real time. By adjusting the output current, the heating rate of the workpiece does not exceed 150℃ / h, and keep it at 590℃ for 3h, and control the cooling rate to be no more than 120℃ / h, and take out the workpiece when the plate temperature is no more than 200℃. The above shows and describes the basic principles, main features and advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A laser welding device for dissimilar material plates, characterized in that: The invention comprises a plate conveying component (1), a laser welding component (4), a guide rail (5), a control platform (6) and an electromagnetic induction heating component (7); the bottom of the plate conveying component (1) is installed on a working surface, the guide rail (5) is installed on one side of the plate conveying component (1) and is parallel to the conveying direction of the welded plate (2); the electromagnetic induction heating component (7) is installed at a lower middle position of the plate conveying component (1); one end of the laser welding component (4) is slidably connected to the guide rail, and the other end of the laser welding component (4) is located at a higher middle position of the plate conveying component (1); the control platform (6) is arranged on the outer side of the plate conveying component.

2. The laser welding device for dissimilar material plates according to claim 1 is characterized in that: The plate conveying assembly (1) comprises a plate conveying machine (101) and conveying rollers (102); the plate conveying machine (101) is arranged on the ground; a weld heating channel (103) is provided on the plate conveying machine (101); mounting grooves (104) are respectively provided on the upper parts of both sides of the weld heating channel (103); the conveying rollers (102) are respectively evenly arranged in the mounting grooves (104) on both sides and are rotatably connected to the mounting grooves (104).

3. The laser welding device for dissimilar material plates according to claim 2 is characterized in that: The welding seam heating channel (103) is arranged in the middle of the plate conveying machine (101) and is consistent with the plate conveying direction.

4. The laser welding processing device for dissimilar material plates according to claim 2 is characterized in that: An infrared camera (3) is installed above the rear end of the weld heating channel (103). The infrared camera (3) is installed together with the plate conveying machine (101) to monitor the distribution of the temperature field on the weld surface.

5. The laser welding device for dissimilar material plates according to claim 4 is characterized in that: The electromagnetic induction heating assembly (7) comprises an induction coil (701) and a magnetic conductor (702); the induction coil (701) is installed in the middle of the weld heating channel (103), and the magnetic conductor (702) is installed at the center of the electromagnetic induction coil (701) for heating the weld.

6. The laser welding device for dissimilar material plates according to claim 5 is characterized in that: The laser welding assembly (4) comprises a laser welding mechanical arm (401), a horizontal hydraulic telescopic arm (402), a horizontal fixed frame (403), a vertical hydraulic telescopic arm (404), a vertical fixed frame (405) and a guide rail trolley (406); the top of the laser welding mechanical arm (401) is connected to the front end of the horizontal hydraulic telescopic arm (402); the rear side of the horizontal hydraulic telescopic arm (402) is installed inside the horizontal fixed frame (403) to control the movement of the laser welding mechanical arm (401) in the horizontal direction; the rear end of the horizontal fixed frame (403) is fixedly connected to the upper end of the vertical hydraulic telescopic arm (404); the lower part of the vertical hydraulic telescopic arm (404) is installed in the vertical fixed frame (405) to control the movement of the laser welding mechanical arm (401) in the vertical direction; the bottom of the vertical fixed frame (405) is fixedly installed on the upper surface of the guide rail trolley (406).

7. The laser welding device for dissimilar material plates according to claim 6 is characterized in that: The bottom of the guide rail trolley (406) used for driving the laser welding assembly (4) to move forward and backward as a whole is slidably connected to the guide rail (5).

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