Multi-beam metal 3D printing device

Abstract

The utility model relates to a multi-beam metal 3D printing device which comprises a robot mechanical arm, a laser, a water cooling machine, a control cabinet, a powder feeder, argon equipment and a rotating assembly. A multi-beam spray head is fixedly installed on the robot mechanical arm, the laser is connected with a laser incidence opening of the multi-beam spray head, and the water cooling machine is connected with the laser and a circulating cooling water channel in the multi-beam spray head. By regulating and controlling the working sequence and the synchronous rotating sequence of the first rotating main shaft and the second rotating main shaft, the technology that the two ends of a part are firstly formed and the middle of the part is seamed and formed is achieved, and the closed part can be formed; the multi-beam nozzle does not need to completely form the closed part according to the contour curvature radius of the closed part, so that the problem that forming work cannot be performed due to interference between the nozzle and the part is solved, and meanwhile, the forming technology has the advantages of high forming efficiency, high forming quality and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, and in particular to a multi-beam metal 3D printing device. Background Art

[0002] Laser cladding 3D printing technology is an advanced additive manufacturing technology that focuses a high-energy laser beam on powder or filamentary materials to melt them instantly and deposit them layer by layer, thereby manufacturing three-dimensional entities with complex shapes and high precision. Laser cladding 3D printing technology combines the advantages of laser processing and additive manufacturing, and has the advantages of high efficiency, high precision, and high surface quality. It is widely used in aviation, automobile, medical, mold and other fields.

[0003] The patent authorization announcement numbers are: CN101148760A, a laser processing forming manufacturing light internal powder feeding process and light internal powder feeding nozzle, CN107627002A, a laser cladding device, CN107217257A, a laser cladding device, and CN106583726A, a laser multi-beam cladding device. The above patent technologies all reveal how to wrap the laser beam around the powder feeding channel. Although they can partially improve the metal 3D printing forming efficiency, accuracy and quality, they still have the following shortcomings:

[0004] For the forming conditions of complex parts, for example, the required laser power is manually set in advance, and the program cannot directly control the change of laser power, which can easily cause heat accumulation in the parts, thus affecting the forming accuracy of the parts; and the parameters of the rotating spindle I, rotating spindle II, turntable and powder feeder are also set manually in advance, and the program cannot directly control the parameter changes of these systems, resulting in the inability of these systems to work together, affecting the coordinated forming of complex parts, not only low production efficiency, but also the inability to effectively guarantee the quality of parts;

[0005] For the forming of closed cavity parts, the only way to achieve part forming is to rely on the robot to drive the nozzle to change its spatial angle and position. Since the size of the nozzle will occupy a certain space, if the curvature of the closed part forming surface is too small, the nozzle itself will interfere with the part, resulting in the inability to carry out the forming of complex closed parts;

[0006] When forming assembly parts, it is impossible to complete the forming of assembly metal parts in one go. Each part has to be printed separately and then assembled. In addition, the assembly of parts is time-consuming and labor-intensive, and the labor or equipment assembly costs are high. Utility Model Content

[0007] The utility model provides a multi-beam metal 3D printing device to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A multi-beam metal 3D printing device, including a robot arm, a laser, a water cooler, a control cabinet, a powder feeder, an argon gas device and a rotating assembly;

[0010] A multi-beam nozzle is fixedly installed on the robot arm, the laser is connected to the laser incident port of the multi-beam nozzle, the water cooler is respectively connected to the laser and the circulating cooling water channel inside the multi-beam nozzle, the powder feeder is connected to the powder inlet interface of the multi-beam nozzle, the argon gas equipment is connected to the gas inlet interface of the multi-beam nozzle, a control handle is arranged on the outside of the control cabinet, and the rotating assembly is arranged on the front side of the robot arm to realize the rotation of the auxiliary printing parts.

[0011] Preferably, the rotating assembly includes a first rotating main shaft and a second rotating main shaft and a first supporting shaft and a second supporting shaft respectively clamped on the first rotating main shaft and the second rotating main shaft.

[0012] Preferably, the rotating assembly further includes a support platform disposed between the first rotating spindle and the second rotating spindle, a rotating motor mounted on the support platform, and a turntable connected to an output end of the rotating motor.

[0013] Preferably, the first rotation main axis and the second rotation main axis are symmetrically arranged with the base of the robot arm as the symmetry axis.

[0014] Preferably, the turntable is arranged below the central symmetrical position of the first support shaft and the second support shaft.

[0015] Preferably, a workbench is provided at the bottom of the base of the robot mechanical arm, and the laser, water cooler, control cabinet, powder feeder and argon gas equipment are respectively and centrally arranged on the workbench.

[0016] Preferably, a controller with PLC as the core is integrated inside the control cabinet, and the controller transmits programs through a control handle.

[0017] Preferably, the laser and the water cooler are respectively and sequentially arranged on the left side of the robot arm, and the control cabinet, the powder feeder and the argon gas equipment are respectively and sequentially arranged on the right side of the robot arm.

[0018] The technical solution of the present application also provides a control method for a multi-beam metal 3D printing device, comprising the following steps:

[0019] S100, starting the water cooling machine so that the cooling liquid enters the interior of the laser and the interior of the multi-beam nozzle respectively, so as to cool the interior of the multi-beam nozzle and the laser in advance;

[0020] S200, further starting the laser, the robot arm, the powder feeder, the argon gas device, the rotating motor and the turntable to check whether the equipment functions normally;

[0021] S300, input the metal 3D printing program into the robot control cabinet by operating the control handle;

[0022] S400, program editing and system control integration are realized by manipulating the control interface in the control handle, and spot check is performed by running the program. If the spot check is successful, steps and parameters are set. If the spot check is not successful, the control interface in the control handle is manipulated to edit the program again;

[0023] S500, after the inspection is completed, coordinate the work steps of each system and set parameters for the first rotating spindle, the second rotating spindle and the rotating motor, so that the setting parameters can be coordinated with the coordinated work steps of each system to complete the work of multiple programs;

[0024] S600, starting the setting program to enable the multi-beam nozzle to cooperate with the first support shaft, the second support shaft and the turntable to print and form the 3D complex parts;

[0025] S700, complete the forming of complex parts, and then remove the formed parts to print the next part.

[0026] Preferably, the inspection work in S400 includes the following inspection contents:

[0027] S401, whether the laser power can be changed by program;

[0028] S402: Whether the program can control the on / off and rotation speed of the first rotating spindle and the second rotating spindle;

[0029] S403: Whether the program can control the robot arm to achieve movement in the X, Y, and Z directions;

[0030] S404, whether the program can control the on and off of the powder feeder and the adjustment of the feeding amount;

[0031] S405: Whether the program can control the on / off and speed change of the turntable driven by the rotating motor;

[0032] S406. Whether the program can control the on and off of the argon gas equipment and the argon gas flow rate.

[0033] S407: Whether the program can control the on and off of the internal optical path of the multi-beam nozzle and the on and off of the powder feeder.

[0034] Preferably, the forming of the 3D complex part in S600 includes the following steps:

[0035] S601, when the multi-beam nozzle is working, the left side of the closed part is formed at one end of the first support shaft;

[0036] S602, closing the first rotation spindle, and setting the rotation parameters of the second rotation spindle;

[0037] S603, when the multi-beam nozzle is working, the right side of the closed part is formed at one end of the second support shaft;

[0038] S604, turning off the second rotating spindle, and setting the same parameters for the first rotating spindle and the second rotating spindle, so that the first supporting shaft and the second supporting shaft have the same rotation speed;

[0039] S605, the multi-beam nozzle works in coordination with the rotation of the first support shaft and the second support shaft, so that the multi-beam nozzle can fill the unfilled area in the middle of the left component and the right component to complete the forming of the closed part.

[0040] Preferably, the forming of the 3D complex part in S600 includes the following steps:

[0041] S610, the multi-beam nozzle works with the rotary motor to drive the turntable to rotate, and the lower part and the middle part of the middle part of the assembly are formed on the turntable;

[0042] S611, closing the turntable by stopping the rotating motor;

[0043] S612, the multi-beam nozzle works on the first support shaft and the second support shaft to complete the forming of the left and right parts of the closed part of the assembly, and after the left and right parts are formed, the parts in the middle area are formed to form a closed U-shape;

[0044] S613, the multi-beam nozzle works in coordination with the rotation of the turntable to complete the forming of some parts on the closed parts of the assembly.

[0045] Preferably, before step S610, neither the first rotating spindle nor the second rotating spindle has a supporting shaft, and after step S611, supporting shafts are installed on the first rotating spindle and the second rotating spindle so that both of them have supporting shafts.

[0046] A computer-readable storage medium stores at least one executable instruction, wherein the executable instruction enables a processor to execute an operation corresponding to any one of the control methods described above.

[0047] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0048] In the utility model, program editing and system control integration are realized through the control interface in the joystick, so that the forming of complex parts can be realized by coordinating the working steps of each system with the modified control program, and there is no need to manually set the on / off or parameters of each system, which reduces human intervention, improves the part forming efficiency, and improves the part forming accuracy and quality.

[0049] In the utility model, by regulating the working order of the first rotating spindle and the second rotating spindle, as well as the synchronous rotation order, the part two-end forming + middle seam forming technology is realized, which can complete the forming of closed parts. With the cooperation of the rotating spindle, the multi-beam nozzle does not need to completely follow the contour curvature radius of the closed part to realize the forming of the closed part, thereby solving the problem of interference between the nozzle itself and the part, resulting in the inability to form the work. At the same time, this forming technology has the advantages of high forming efficiency and high forming quality.

[0050] In the utility model, program editing and system control integration are realized through the control interface in the operating handle. By controlling the working order of each system and coordinating the metal forming work of each system synchronously, direct metal 3D printing of assembly parts can be realized, which reduces the traditional assembly steps and completes the assembly of parts directly through 3D forming, thereby improving work efficiency, reducing assembly time and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0052] Figure 2 This is a schematic diagram of forming a complex spherical part;

[0053] Figure 3 Schematic diagram of the forming of complex parts assembly.

[0054] In the figure: 1. workbench; 2. robot arm; 3. multi-beam nozzle; 4. laser; 5. water cooler; 6. control cabinet; 7. control handle; 8. powder feeder; 9. argon equipment; 10. first rotating spindle; 11. first supporting shaft; 12. second supporting shaft; 13. supporting table; 14. rotating motor; 15. turntable; 16. second rotating spindle. DETAILED DESCRIPTION

[0055] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0056] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Embodiment 1

[0057] like Figure 1-3 As shown, the utility model provides a multi-beam metal 3D printing device, including a robot arm 2, a laser 4, a water cooler 5, a control cabinet 6, a powder feeder 8, an argon gas device 9 and a rotating assembly; a multi-beam nozzle 3 is fixedly installed on the robot arm 2, the laser 4 is connected to the laser incident port of the multi-beam nozzle 3, the water cooler 5 is respectively connected to the laser 4 and the circulating cooling water channel inside the multi-beam nozzle 3, the powder feeder 8 is connected to the powder inlet interface of the multi-beam nozzle 3, the argon gas device 9 is connected to the gas inlet interface of the multi-beam nozzle 3, a control handle 7 is arranged on the outside of the control cabinet 6, and the rotating assembly is arranged on the front side of the robot arm 2 to realize the rotation of the auxiliary printed parts.

[0058] In this embodiment, a workbench 1 is provided at the bottom of the base of the robot manipulator 2, and the laser 4, water cooler 5, control cabinet 6, powder feeder 8 and argon gas equipment 9 are respectively arranged on the workbench 1, and the laser 4 and water cooler 5 are respectively arranged on the left side of the robot manipulator 2, and the control cabinet 6, powder feeder 8 and argon gas equipment 9 are respectively arranged on the right side of the robot manipulator 2. A controller with PLC as the core is integrated in the control cabinet 6, and the controller transmits the program through the control handle 7.

[0059] Specifically, the basic functions of the robot control system:

[0060] 1. Control the motion position of the end effector of the robot arm (i.e. control the points and movement path of the end effector);

[0061] 2. Control the motion posture of the robot arm (i.e. control the relative position of two adjacent movable components);

[0062] 3. Control the movement speed (i.e., control the law of the end effector's movement position changing over time);

[0063] 4. Control the motion acceleration (i.e. control the speed change of the end effector during the motion process);

[0064] 5. Control the output torque of each power joint in the robot arm: (i.e. control the force applied to the operation object);

[0065] 6. It has a human-computer interaction function that is easy to operate. The robot completes the specified tasks by memorizing and reproducing them;

[0066] 7. Enable the robot to detect and sense the external environment.

[0067] Laser 4 features:

[0068] 1. Provide a high-energy laser beam; the laser is the most critical equipment in laser cladding technology, and its main function is to generate a high-energy laser beam; this laser beam has the characteristics of high energy density, high monochromaticity, high directionality, etc., and can quickly heat the material surface in a very short time to achieve melting and recrystallization of the material.

[0069] 2. Control the shape and size of the cladding layer; the output parameters of the laser, such as laser power, spot size, scanning speed, etc., can be precisely controlled.

[0070] 3. Achieve uniformity and density of the cladding layer; the laser beam generated by the laser can achieve rapid heating and cooling of the molten pool, which helps to eliminate gas and impurities in the molten pool and improve the uniformity and density of the cladding layer; at the same time, rapid cooling can also refine the grains of the cladding layer and improve its mechanical properties and wear resistance.

[0071] 4. Achieve a good combination of the cladding layer and the substrate. During the laser cladding process, the laser beam can accurately control the depth and shape of the molten pool, so that a good metallurgical bond is formed between the cladding layer and the substrate; this combination not only improves the adhesion of the cladding layer, but also improves the wear resistance and corrosion resistance of the entire workpiece.

[0072] Functions of water cooler 5 in laser cladding:

[0073] 1. Heat dissipation: During the laser cladding process, the high-temperature heat generated by the material surface absorbing the laser energy will be quickly transferred to the cooling water in the water cooling box, and the heat will be taken away by the flow of water, thereby preventing thermal damage to the equipment.

[0074] 2. Maintain processing quality: Stable cooling effect helps maintain the temperature field during laser cladding, reduce thermal stress and thermal deformation, and improve processing quality.

[0075] 3. Protect equipment: The water cooling box can effectively reduce the operating temperature of the laser cladding equipment, extend the service life of the equipment and reduce the failure rate.

[0076] 4. Energy saving and emission reduction: The water cooling box adopts circulating water cooling, which is more energy-saving than air cooling. At the same time, it reduces the exhaust gas emissions generated during the cooling process, which is beneficial to environmental protection.

[0077] Argon is a commonly used protective gas. It is widely used in laser cladding process due to its stable chemical properties, high density and good thermal conductivity. Argon can effectively isolate oxygen and ammonia in the air, prevent oxidation and ammonia of the molten pool, and thus ensure the stability of the chemical composition and performance of the cladding layer. In addition, ammonia has good thermal conductivity, which helps to improve the cooling rate and solidification quality of the molten pool.

[0078] Robotic Arm The role of Robotic Arm 2 in laser cladding:

[0079] 1. Precise control: The robot arm has a high-precision motion control system that can achieve precise positioning and scanning of the laser beam; during the laser cladding process, the robot arm can ensure that the laser beam moves according to the predetermined trajectory and speed, thereby achieving precise deposition of coating materials.

[0080] 2. High efficiency: Compared with traditional manual operation, the robotic arm can perform laser cladding operations continuously and stably, greatly improving production efficiency; in addition, the robotic arm can also be programmed according to production needs to achieve automated production.

[0081] 3. Safety: The laser cladding process involves dangerous factors such as high temperature and molten metal; the application of robotic arms can reduce manual intervention, reduce the risk of operators contacting dangerous sources, and improve the safety of the production process.

[0082] 4. Strong adaptability: The robotic arm can flexibly adapt to various complex workpiece shapes and sizes; by adjusting the posture and motion trajectory of the robotic arm, laser cladding at different positions and angles can be achieved to meet the processing needs of different workpieces.

[0083] In this embodiment, the rotating assembly includes a first rotating spindle 10 and a second rotating spindle 16 and a first supporting shaft 11 and a second supporting shaft 12 respectively clamped on the first rotating spindle 10 and the second rotating spindle 16. The first rotating spindle 10 and the second rotating spindle 16 are symmetrically arranged with the base of the robot manipulator 2 as the axis of symmetry.

[0084] like Figure 1 and 2 As shown, specifically, when printing complex closed parts, the multi-beam nozzle 3 can complete the forming of the hemispherical parts on the first support shaft 11 and the second support shaft 12 respectively, and then finally complete the forming of the closed parts by stitching the unfilled area between the two hemispherical parts.

[0085] In this embodiment, the rotating assembly also includes a support platform 13 arranged between the first rotating spindle 10 and the second rotating spindle 16, a rotating motor 14 installed on the support platform 13, and a turntable 15 connected to the output end of the rotating motor 14, and the turntable 15 is arranged below the central symmetrical position of the first support shaft 11 and the second support shaft 12.

[0086] like Figure 1 and 3 As shown, specifically, when printing complex assembly parts, the rotating motor 14 drives the rotation of the turntable 15 and the robot arm 2 drives the movement of the multi-beam nozzle 3 to realize the preliminary 3D forming of the disc part on the turntable 15, and the formed part is shown in stage one; a small cylinder is then formed on the basis of stage one, as shown in stage two; then the two auxiliary support shafts are clamped by the three-jaw chucks on the two rotating spindles, and the square parts are respectively unfolded on the two support shafts to form, and the completed parts are shown in stage three; then the two halves of the workpiece are filled together by moving the nozzle to fill the central hollow area to form a closed U-shape, as shown in stage four; finally, a flat cylinder is formed on the basis of stage two, as shown in stage five; at this point, the two assembled parts can be completed; and this metal 3D forming method effectively reduces the traditional assembly steps, and completes the assembly of parts directly through 3D forming, thereby improving work efficiency, reducing assembly time, and reducing costs.

[0087] In this embodiment, the laser 4, the water cooler 5, the control cabinet 6, the powder feeder 8 and the argon gas equipment 9 are respectively arranged on the workbench 1, and the control cabinet 6 is used to control the movement of the robot arm 2, the on and off and power change of the laser 4, the on and off of the powder feeder 8 and the argon gas equipment 9, and the rotation speed of the rotating component.

[0088] Specifically, the metal 3D printing equipment is composed of a laser 4, a robot, a water cooler 5, an argon gas device 9, a support table 13, a first rotating spindle 10, a second rotating spindle 16, a turntable 15 and a powder feeder 8 and other systems; the PLC is integrated inside the robot control cabinet, and the control program can be transmitted inside the control handle 7 to control the on and off of the laser 4 and the power change, the on and off of the powder feeder 8, the robot manipulator 2 driving the multi-beam nozzle 3 to move the position change, the rotating spindle movement speed change, the turntable 15 rotation speed, the on and off of the argon gas device 9, etc.

[0089] To be more specific, the laser 4, robot, first rotating spindle 10, second rotating spindle 16, turntable 15, powder feeder 8 and argon equipment 9 and other systems are integrated as a whole, and PLC is used to control the on and off of each system and parameter changes, and integrated into the robot control cabinet 6, and the metal 3D forming program file is imported into the control cabinet 6, and then the program editing and the control integration of each system are realized through the control interface in the joystick. The forming of complex parts can be realized by the modified control program in conjunction with the joystick, and the working steps of each system are coordinated. There is no need to manually set the on and off or parameters of each system, which reduces human intervention, improves the forming efficiency of parts, and improves the forming accuracy and quality of parts.

[0090] The working principle and use process of this utility model:

[0091] S100, starting the water cooling machine 5 so that its coolant enters the interior of the laser 4 and the interior of the multi-beam nozzle 3 respectively, so as to cool the interior of the multi-beam nozzle 3 and the laser 4 in advance;

[0092] S200, further starting the laser 4, the robot arm 2, the powder feeder 8, the argon gas device 9, the rotating motor 14 and the turntable 15 to check whether the equipment functions normally;

[0093] S300, inputting the metal 3D printing program into the robot control cabinet 6 by manipulating the control handle 7;

[0094] S400, program editing and system control integration are realized by manipulating the control interface in the control handle 7, and spot check is performed by running the program. If the spot check is yes, the steps and parameters are set. If the spot check is no, the control interface in the control handle 7 is manipulated to edit the program again. The spot check includes the following inspection contents:

[0095] Whether the power of laser 4 can be changed by the program; whether the program can control the on and off of the first rotating spindle 10 and the second rotating spindle 16 and the speed; whether the program can control the robot arm 2 to realize the movement in the X, Y and Z directions; whether the program can control the on and off of the powder feeder 8 and the adjustment of the feeding amount; whether the program can control the on and off and speed change of the turntable 15 driven by the rotating motor 14; whether the program can control the on and off of the argon gas equipment 9 and the argon gas flow rate; whether the program can control the on and off of the internal optical path of the multi-beam nozzle 3 and the on and off of the powder feeder 8.

[0096] S500, after the inspection is completed, the coordinated working steps of each system are set, and the parameters of the first rotating spindle 10, the second rotating spindle 16 and the rotating motor 14 are set, so that the setting parameters are coordinated with the coordinated working steps of each system to complete the work of multiple programs;

[0097] S600, start the setting program to prompt the multi-beam nozzle 3 to cooperate with the first support shaft 11, the second support shaft 12 and the turntable 15 to print and form 3D complex parts; the following is explained by printing two types of 3D complex parts:

[0098] Part 1: During printing, the first support shaft 11 and the second support shaft 12 are respectively installed on the first rotating spindle 10 and the second rotating spindle 16, so that the parameters of the first rotating spindle 10 are set first, so that when the first rotating spindle 10 rotates, the robot arm 2 cooperates with the multi-beam nozzle 3 to complete the hemispherical part forming of the left part of the closed part on the first support shaft 11, and then the first rotating spindle 10 is closed, and the parameters of the second rotating spindle 16 are set, so that when the second rotating spindle 16 rotates, the hemispherical part forming of the right part of the closed part is completed on the second support shaft 12, and then the second rotating spindle 16 is closed, and the parameters of the first rotating spindle 10 and the second rotating spindle 16 are set so that the two rotate the same, and then the robot arm 2 moves to cooperate with the work of the multi-beam nozzle 3, so that when the first rotating spindle 10 and the second rotating spindle 16 rotate, they can complete the stitching of the unfilled area between the two hemispherical parts and realize the forming of the closed part.

[0099] Part 2: First, set the rotation parameters of the rotating motor 14 to drive the turntable 15. When the rotating motor 14 drives the turntable 15 to rotate, the robot arm 2 cooperates with the multi-beam nozzle 3 to complete the forming of the lower part and the middle part of the middle part of the assembly, and then turn off the rotating motor 14 to stop the rotation of the turntable 15. By installing the first support shaft 11 and the second support shaft 12 on the first rotating spindle 10 and the second rotating spindle 16 respectively, the robot arm 2 cooperates with the multi-beam nozzle 3 to complete the forming of the left and right side parts of the closed part of the assembly on the first support shaft 11 and the second support shaft 12. After the two sides are formed, the middle area is mended to promote the forming of the return part. Then, when the multi-beam nozzle 3 continues to work, the upper part of the closed part of the assembly can be formed on the small cylinder in the middle part of the top of the turntable 15, so that two parts assembled together can be completed; and this metal 3D forming method effectively reduces the traditional assembly steps.

[0100] Based on the above, the overall working principle of its laser cladding 3D printing technology is:

[0101] Data preparation: Design the required 3D model through CAD and other design software and convert it into STL format;

[0102] Slicing: Use slicing software to slice the STL file and generate the path and parameters required for printing each layer;

[0103] Material laying: laying powder or filamentary material on the printing platform to form a thin layer to be printed;

[0104] Laser melting: A high-energy laser beam moves along a preset path over the layer to be printed, causing the material to melt instantly and form the desired shape;

[0105] Interlayer bonding: The melted material combines with the previous layer to form a tight whole;

[0106] Layer-by-layer stacking: By repeating the above steps, the material is stacked layer by layer until the entire 3D solid is printed.

[0107] In the present utility model, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The term "and / or" used in this article includes any and all combinations of one or more related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0108] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0109] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0110] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. A multi-beam metal 3D printing device, characterized in that: It includes a robot arm (2), a laser (4), a water cooler (5), a control cabinet (6), a powder feeder (8), an argon gas device (9) and a rotating assembly; A multi-beam nozzle (3) is fixedly mounted on the robot arm (2); the laser (4) is connected to the laser incident port of the multi-beam nozzle (3); the water cooler (5) is respectively connected to the circulating cooling water channel inside the laser (4) and the multi-beam nozzle (3); the powder feeder (8) is connected to the powder inlet interface of the multi-beam nozzle (3); the argon gas device (9) is connected to the gas inlet interface of the multi-beam nozzle (3); a control handle (7) is arranged outside the control cabinet (6); and the rotating assembly is arranged on the front side of the robot arm (2) to realize the rotation of the auxiliary printing part.

2. A multi-beam metal 3D printing device according to claim 1, characterized in that: The rotating assembly comprises a first rotating main shaft (10) and a second rotating main shaft (16), and a first supporting shaft (11) and a second supporting shaft (12) respectively clamped on the first rotating main shaft (10) and the second rotating main shaft (16).

3. A multi-beam metal 3D printing device according to claim 2, characterized in that: The rotating assembly further comprises a support platform (13) arranged between the first rotating main shaft (10) and the second rotating main shaft (16), a rotating motor (14) mounted on the support platform (13), and a rotating disk (15) connected to the output end of the rotating motor (14).

4. A multi-beam metal 3D printing device according to claim 3, characterized in that: The first rotating main axis (10) and the second rotating main axis (16) are symmetrically arranged with the base of the robot mechanical arm (2) as a symmetry axis.

5. A multi-beam metal 3D printing device according to claim 4, characterized in that: The rotating disk (15) is arranged below a centrally symmetrical position of the first supporting shaft (11) and the second supporting shaft (12).

6. The multi-beam metal 3D printing device according to claim 1, characterized in that: A workbench (1) is provided at the bottom of the base of the robot mechanical arm (2), and the laser (4), water cooler (5), control cabinet (6), powder feeder (8) and argon gas equipment (9) are respectively and centrally arranged on the workbench (1).

7. The multi-beam metal 3D printing device according to claim 1, characterized in that: A controller with a PLC as the core is integrated inside the control cabinet (6), and the controller transmits programs via a control handle (7).

8. The multi-beam metal 3D printing device according to claim 6, characterized in that: The robot arm (2) is arranged at the center position of the rear end side of the top of the workbench (1), and the laser (4) and the water cooler (5) are arranged on the left side of the robot arm (2) in sequence, and the control cabinet (6), the powder feeder (8) and the argon gas equipment (9) are arranged on the right side of the robot arm (2) in sequence.

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