A high-precision automatic welding robot

Abstract

The present invention belongs to the technical field of welding robots, and specifically is a high-precision automatic welding robot, comprising a workbench, a transfer plate rotatably arranged above the workbench, a rotating shaft fixedly installed on the lower end surface of the transfer plate, the lower end surface of the rotating shaft is connected to an output end of an external drive motor, a plurality of placement racks are provided on the upper end surface of the transfer plate, the placement racks are used to place workpieces to be welded, and a fixing mechanism is provided inside the placement racks; an external drive motor drives the rotating shaft and the transfer plate to rotate, and the transfer plate drives the workpiece to be welded to rotate toward the side close to the welding head, and when one of the placement racks and the workpiece to be welded and the welding head are located on the same vertical plane, the adjustment mechanism above the support frame is controlled at this time, so that the adjustment mechanism drives the mechanical arm and the welding head to move toward the top close to the workpiece to be welded, and then the welding head can automatically weld the welding points of the workpiece to be welded.

Description

Technical Field

[0001] The invention belongs to the technical field of welding robots, in particular to a high-precision automatic welding robot. Background Art

[0002] Welding is a common joining process in modern industrial production, widely used in industries such as automotive, aerospace, and machinery manufacturing. Traditional welding methods rely primarily on manual labor, resulting in unstable welding quality, low efficiency, and high labor intensity. In recent years, with the development of automation technology, automatic welding robots have gradually gained application.

[0003] The existing technology also proposes some solutions. For example, a Chinese patent application with the announcement number CN220259937U discloses a welding robot, which includes a frame, a welding unit is provided on the frame, a slide rail is provided on the frame along the length direction, a mounting seat is slidably provided on the slide rail, a guide rail is provided on the mounting seat along the width direction of the frame, a steering motor is slidably provided on the guide rail, the output end of the steering motor is provided along the height direction, and the output end of the steering motor is connected to a crank arm. It has a simple structure, can effectively observe the working condition of the welding gun, and has a good use effect.

[0004] Although the above technical solution solves the problem of observing the working conditions of the welding gun, there are still other problems in its actual use. For example, there are many types of welding. At present, welding robots are relatively fast when welding some flat surfaces, but it is more troublesome when welding workpieces with inclined surfaces or arc surfaces, which affects the welding quality of the welded parts.

[0005] To this end, the present invention provides a high-precision automatic welding robot. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a high-precision automatic welding robot described in the present invention comprises a workbench, a transfer plate is rotatably arranged above the workbench, a rotating shaft is fixedly installed on the lower end surface of the transfer plate, the lower end surface of the rotating shaft is connected to an output end of an external drive motor, a plurality of placement racks are provided on the upper end surface of the transfer plate, the placement racks are used to place workpieces to be welded, a fixing mechanism is provided inside the placement racks, and the fixing mechanism is used to fix the workpieces to be welded, a support frame is fixedly installed above the workbench and on the side of the transfer plate, a mechanical arm is provided above the support frame, a welding head is provided on the side of the mechanical arm, and an adjusting mechanism is provided above the support frame, the adjusting mechanism is used to adjust the mechanical arm, the adjusting mechanism comprises a threaded rod rotatably arranged above the support frame, the bottom end of the threaded rod is connected to the second output end of the external drive motor, and the outer circumferential surface of the threaded rod is threadedly provided with an arm slide.

[0008] Preferably, the fixing mechanism includes an electric telescopic column fixedly mounted on the inner wall of the placement rack, a fastening ring is provided inside the placement rack, the material of the fastening ring is a soft and high-temperature resistant material, the inner wall of the fastening ring is provided with friction balls designed in a circular array, and the electric telescopic column is provided in plurality, and is designed in equal proportion on the inner wall of the placement rack.

[0009] Preferably, a first contact is fixedly installed on the outer circumference of the transfer plate, and a second contact is installed on the side of the support frame. A plurality of first contacts are provided, and are designed to correspond one to one with the plurality of placement frames. The transfer plate will drive the first contact to rotate during rotation, and the first contact will contact the second contact; during operation, when the workpiece to be welded has not yet moved to the position corresponding to the welding head, the transfer plate will drive the first contact to rotate synchronously, and will gradually drive the first contact to contact the second contact. At this time, the external circuit is connected, and the external controller will first control the transfer plate to stop running, and drive the adjustment mechanism to drive the mechanical arm to move, thereby improving the automation function of the welding robot in the present invention.

[0010] Preferably, the robotic arm is ball-connected to the side of the arm slide; during operation, when the first contact contacts the second contact, and the external controller drives the adjustment mechanism, the external controller will control the drive motor 2 to drive the threaded rod to rotate, and the threaded rod will drive the arm slide on its outer surface to move up and down, so that the arm slide drives the robotic arm to move toward the side close to the workpiece to be welded, and then the robotic arm will drive the welding head to the surface of the workpiece to be welded, and perform welding processing on the workpiece to be welded.

[0011] Preferably, the adjustment mechanism also includes a limit frame installed on the end of the robotic arm, the inner wall of the limit frame is provided with a limit groove, the welding head is slidably arranged inside the limit groove, the groove wall of the limit groove is fixedly installed with an electric telescopic column 2, and the telescopic end of the electric telescopic column 2 is connected to the surface of the welding head.

[0012] Preferably, a discharge chute is provided under the placement rack, and a shielding plate is slidably provided under the placement rack. Two groups of shielding plates are provided to shield the discharge chute. A transmission cylinder is provided above the workbench, and the transmission cylinder is located below the transfer plate. A material receiving unit is provided on the outside of the transmission cylinder, and the material receiving unit is used to automatically receive the welded parts after welding.

[0013] Preferably, the material receiving unit includes a third contact installed on the surface of the transmission cylinder, and the first contact will contact the third contact when the transfer disc drives the first contact to rotate; during operation, when the transfer disc drives the welded workpiece to rotate, the transfer disc will also drive the first contact to rotate, and then the first contact will contact the third contact. At this time, the external circuit is connected, and the external controller will first control the transfer disc to stop rotating, and control the material receiving unit to automatically receive the welded workpiece.

[0014] Preferably, the material receiving unit also includes a rotating gear rotatably installed under the placing frame, the outer surface of the rotating gear is connected to the third output end of the external driving motor, and two groups of ratchet plates are slidably provided under the placing frame, and the outer peripheral surface of the rotating gear is respectively meshed with the two groups of ratchet plates, and the side walls of the two groups of ratchet plates are fixedly connected to a connecting bracket, and the two groups of connecting brackets are respectively connected to the two groups of shielding plates on one side away from the ratchet plates; when working, when the first contact and the third contact contact, under the control of the external controller, the external driving motor three will drive the rotating gear to rotate, and the rotating gear will drive the ratchet plates meshed with it to move, and the two ratchet plates will move in the direction away from each other, that is, the two ratchet plates will drive the connecting bracket and the shielding plate to move, and the two shielding plates will move away from each other and no longer block the discharge chute, so that the welded parts will fall along the discharge chute to the inside of the transmission cylinder, thereby realizing automatic material receiving processing of the welded parts.

[0015] Preferably, a plurality of rectangular retaining grooves are provided on the lower side of the interior of the placement rack, and the two groups of the baffle plates and the two groups of the ratchet plates are respectively slidably arranged in the corresponding rectangular retaining grooves; during operation, when the baffle plates and the ratchet plates move, the baffle plates and the ratchet plates will move inside the rectangular retaining grooves, and with the rectangular retaining grooves limiting the baffle plates and the ratchet plates, it is convenient to place and discharge the welded parts.

[0016] Preferably, a rubber pad is provided inside the transmission cylinder, and the lower end of the transmission cylinder is connected to an external transmission belt.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The high-precision automatic welding robot described in the present invention can synchronously clamp multiple workpieces to be welded through the action of a fixing mechanism and a transfer plate. After welding is completed on a workpiece to be welded in one of the passive clamping members, the transfer plate can rotate the welded workpiece to the next workstation, and the other group of unwelded workpieces can be rotated to the welding point, so that the welded parts can be welded continuously.

[0019] 2. The high-precision automatic welding robot described in the present invention is connected to the side of the arm slide by a ball-type connection of the robotic arm, so the robotic arm can rotate 360 ​​degrees on the side of the arm slide, which is convenient for multi-angle fine adjustment of the welding workpiece with inclined surfaces or circular arc surfaces, thereby helping to improve the welding effect when welding inclined surfaces or curved surface structures. Moreover, when the robotic arm and the welding head move to the surface of the workpiece to be welded, if the welding head is not in contact with the workpiece to be welded, the telescopic end of the electric telescopic column 2 can continue to be controlled to move, so that the telescopic end of the electric telescopic column 2 drives the welding head to further contact with the workpiece to be welded. In this way, the moving position of the welding head can be finely adjusted, thereby improving the welding effect of workpieces to be welded with different shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the support frame in the present invention;

[0023] Figure 3 It is a structural schematic diagram of the rotating shaft in the present invention;

[0024] Figure 4 It is a structural schematic diagram of the placement rack in the present invention;

[0025] Figure 5 It is a structural diagram of the limiting frame in the present invention;

[0026] Figure 6 It is a schematic cross-sectional structure diagram of the transfer tray in the present invention;

[0027] Figure 7 It is a partial structural diagram of the shielding plate in the present invention;

[0028] Figure 8 It is a schematic diagram of the top structure of the present invention;

[0029] Figure 9 It is a partial structural diagram of the rotating gear in the present invention.

[0030] In the figure: 1. Workbench; 2. Transfer plate; 201. Rotating shaft; 202. First contact; 3. Placement rack; 4. Support frame; 401. Robot arm; 402. Welding head; 5. Electric telescopic column 1; 6. Fastening ring; 7. Second contact; 8. Threaded rod; 9. Arm slide; 10. Limiting frame; 11. Limiting groove; 12. Electric telescopic column 2; 13. Discharge chute; 14. Shielding plate; 15. Transmission cylinder; 16. Third contact; 17. Rotating gear; 18. Ratchet plate; 19. Connecting bracket; 20. Rectangular retaining groove. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] like Figures 1 to 9 As shown, a high-precision automatic welding robot described in an embodiment of the present invention includes a workbench 1, a transfer disk 2 is rotatably provided above the workbench 1, a rotating shaft 201 is fixedly installed on the lower end surface of the transfer disk 2, and the lower end surface of the rotating shaft 201 is connected to an output end of an external drive motor, and a plurality of placement racks 3 are provided on the upper end surface of the transfer disk 2,

[0033] When working, refer to the attached Figure 1 and Figure 2As shown, a plurality of placement racks 3 are designed on the upper end surface of the transfer tray 2, and a workpiece to be welded is placed inside one of the placement racks 3, and then the workpiece to be welded is fixed by a fixing mechanism, and the external drive motor drives the rotating shaft 201 and the transfer tray 2 to rotate, and the transfer tray 2 drives the workpiece to be welded to rotate toward the side close to the welding head 402. When one of the placement racks 3 and the workpiece to be welded and the welding head 402 are located on the same vertical plane, the adjustment mechanism above the support frame 4 is controlled at this time, so that the adjustment mechanism drives the mechanical arm 401 and the welding head 402 to move toward the top close to the workpiece to be welded, and then the welding head 402 can automatically weld the welding points of the workpiece to be welded;

[0034] Under the action of the fixing mechanism and the transfer plate 2, multiple workpieces to be welded can be clamped synchronously. After the welding of the workpiece to be welded in one of the passive clamping parts is completed, the welded workpiece can be rotated to the next workstation through the transfer plate 2, and the other group of unwelded workpieces can be rotated to the welding point. In this way, the welded parts can be welded continuously. Moreover, under the action of the adjustment mechanism, the threaded rod 8 will drive the arm slide 9 on its outer surface to move up and down, so that the arm slide 9 drives the robotic arm 401 to move to the side close to the workpiece to be welded. Then the robotic arm 401 will drive the welding head 402 to move to the surface of the workpiece to be welded, and perform welding processing on the workpiece to be welded. It can perform multi-angle fine adjustment on the welding workpiece with inclined surface or arc surface, which is beneficial to improve the welding effect when welding inclined surface or arc surface structure.

[0035] It should be noted that the welding of the workpiece by the welding head 402 is a prior art and will not be described in detail in the embodiment of the present invention.

[0036] The fixing mechanism includes an electric telescopic column 5 fixedly mounted on the inner wall of the placement frame 3. A fastening ring 6 is provided inside the placement frame 3. The fastening ring 6 is made of a soft, high-temperature resistant material. In the embodiment of the present invention, it can be borosilicate rubber, which can be used in high temperatures up to 410°C for a short period of time and generally has a long-term use range of -40°C to 350°C. It has other properties similar to silicone rubber, such as good flexibility and elasticity, and chemical corrosion resistance.

[0037] The inner wall of the fastening ring 6 is provided with friction balls designed in a circumferential array, and the electric telescopic column 5 is provided with multiple, and is designed in equal proportion on the inner wall of the placement rack 3; when working, refer to the attached Figure 2 and Figure 4As shown, the workpiece to be welded is placed in the middle of the fastening ring 6, and a plurality of electric telescopic columns 5 are designed. When the workpiece to be welded needs to be fixed, the telescopic end of each electric telescopic column 5 is controlled to move so that the telescopic end of each electric telescopic column 5 contacts the fastening ring 6 and drives the fastening ring 6 to adhere to the surface of the workpiece to be welded. Since a plurality of electric telescopic columns 5 are designed, the workpiece to be welded can be tightly fixed under the pressure of the plurality of electric telescopic columns 5, and under the action of the fastening ring 6 and the friction ball on its inner wall, welded parts of different shapes can be fixed, thereby improving the practicality of this high-precision automatic welding robot.

[0038] A first contact 202 is fixedly installed on the outer peripheral surface of the transfer plate 2, and a second contact 7 is installed on the side of the support frame 4. A plurality of first contacts 202 are provided, and are designed to correspond one to one with the plurality of placement frames 3. The transfer plate 2 will drive the first contact 202 to rotate during the rotation process, and the first contact 202 will contact the second contact 7; during operation, when the workpiece to be welded has not yet moved to the position corresponding to the welding head 402, the transfer plate 2 will drive the first contact 202 to rotate synchronously, and will gradually drive the first contact 202 to contact the second contact 7. At this time, the external circuit is connected, and the external controller will first control the transfer plate 2 to stop running, and drive the adjustment mechanism to drive the mechanical arm 401 to move, thereby improving the automation function of the welding robot in the present invention.

[0039] like Figures 3 to 7 As shown, the robotic arm 401 is ball-connected to the side of the arm slide 9; during operation, when the first contact 202 contacts the second contact 7, and the external controller drives the adjustment mechanism, the external controller will control the drive motor 2 to drive the threaded rod 8 to rotate, and the threaded rod 8 will drive the arm slide 9 on its outer circumference to move up and down, so that the arm slide 9 drives the robotic arm 401 to move to the side close to the workpiece to be welded, and then the robotic arm 401 will drive the welding head 402 to move to the surface of the workpiece to be welded, and perform welding processing on the workpiece to be welded. Since the robotic arm 401 is ball-connected to the side of the arm slide 9, the robotic arm 401 can rotate 360 ​​degrees on the side of the arm slide 9, which is convenient for multi-angle fine adjustment of the welding workpiece with inclined surface or arc surface, which is beneficial to improve the welding effect when welding inclined surface or arc surface structure.

[0040] The adjustment mechanism also includes a limit frame 10 installed at the end of the robotic arm 401, and the inner wall of the limit frame 10 is provided with a limit slot 11, and the welding head 402 is slidably arranged inside the limit slot 11. The groove wall of the limit slot 11 is fixedly installed with an electric telescopic column 2 12, and the telescopic end of the electric telescopic column 2 12 is connected to the surface of the welding head 402; when working, refer to the attached Figure 2 and Figure 5As shown, when the robotic arm 401 and the welding head 402 move to the surface of the workpiece to be welded, if the welding head 402 is not in contact with the workpiece to be welded, the telescopic end of the electric telescopic column 2 12 can continue to be controlled to move, so that the telescopic end of the electric telescopic column 2 12 drives the welding head 402 to further contact the workpiece to be welded. In this way, the moving position of the welding head 402 can be finely adjusted to improve the welding effect of workpieces of different shapes to be welded.

[0041] A discharge chute 13 is provided below the placement rack 3, and a shielding plate 14 is slidably provided below the placement rack 3. Two groups of shielding plates 14 are provided to shield the discharge chute 13. A transmission cylinder 15 is provided above the workbench 1, and the transmission cylinder 15 is located below the transfer plate 2. A receiving unit is provided on the outside of the transmission cylinder 15, and the receiving unit is used to automatically receive the welded parts after welding. When working, when there are parts to be welded inside the placement rack 3, the shielding plate 14 is provided at this time. It is located below the discharge chute 13 and blocks the discharge chute 13; when the welding of the parts to be welded is completed, the transfer disc 2 is controlled to continue to rotate, so that the transfer disc 2 drives the welded parts to move to the side close to the transmission cylinder 15, and then under the action of the receiving unit, the shielding plate 14 will be moved away from the discharge chute 13, and the welded parts will fall from the discharge chute 13 to the inside of the transmission cylinder 15, realizing the automatic receiving function of the welded parts, thereby facilitating the subsequent welding of the remaining parts to be welded.

[0042] The material receiving unit includes a third contact 16 installed on the surface of the transmission cylinder 15. When the transfer disc 2 drives the first contact 202 to rotate, the first contact 202 will contact the third contact 16; during operation, when the transfer disc 2 drives the welded workpiece to rotate, the transfer disc 2 will simultaneously drive the first contact 202 to rotate, and then the first contact 202 will contact the third contact 16. At this time, the external circuit is connected, and the external controller will first control the transfer disc 2 to stop rotating, and control the material receiving unit to automatically receive the welded workpiece.

[0043] The receiving unit also includes a rotating gear 17 rotatably mounted below the placement rack 3, the outer surface of the rotating gear 17 is connected to the three output terminals of the external drive motor, and two groups of ratchet plates 18 are slidably provided below the placement rack 3, the outer peripheral surface of the rotating gear 17 is respectively engaged with the two groups of ratchet plates 18, and the side walls of the two groups of ratchet plates 18 are fixedly connected with connecting brackets 19, and the two groups of connecting brackets 19 are respectively connected to the two groups of shielding plates 14 on one side away from the ratchet plates 18; when working, when the first contact 202 and When the third contact 16 is in contact, under the control of the external controller, the external drive motor 3 will drive the rotating gear 17 to rotate, and the rotating gear 17 will drive the ratchet plate 18 engaged with it to move, and the two ratchet plates 18 will move away from each other, that is, the two ratchet plates 18 will drive the connecting bracket 19 and the baffle plate 14 to move, and the two baffle plates 14 will move away from each other and no longer block the discharge chute 13, so that the welded parts will fall along the discharge chute 13 to the inside of the transmission cylinder 15, realizing automatic material collection processing of the welded parts.

[0044] A plurality of rectangular retaining grooves 20 are provided on the lower side of the interior of the placement rack 3, and the two groups of the baffle plates 14 and the two groups of the ratchet plates 18 are respectively slidably arranged in the corresponding rectangular retaining grooves 20; during operation, when the baffle plates 14 and the ratchet plates 18 move, the baffle plates 14 and the ratchet plates 18 will move inside the rectangular retaining grooves 20, and under the limitation of the baffle plates 14 and the ratchet plates 18 by the rectangular retaining grooves 20, the placement and discharge of the welded parts are facilitated.

[0045] A rubber pad is provided inside the transmission cylinder 15 , and the lower end of the transmission cylinder 15 is connected to an external transmission belt.

[0046] During operation, a plurality of placement racks 3 are designed on the upper end surface of the transfer plate 2, and a workpiece to be welded is placed inside one of the placement racks 3, and then the workpiece to be welded is fixed by a fixing mechanism, and the external drive motor drives the rotating shaft 201 and the transfer plate 2 to rotate, and the transfer plate 2 drives the workpiece to be welded to rotate toward the side close to the welding head 402. When one of the placement racks 3 and the workpiece to be welded and the welding head 402 are located on the same vertical plane, the adjustment mechanism above the support frame 4 is controlled at this time, so that the adjustment mechanism drives the mechanical arm 401 and the welding head 402 to move toward the top close to the workpiece to be welded, and then the welding head 402 can automatically weld the welding points of the workpiece to be welded; refer to the attached drawings. Figure 2 and Figure 4As shown, the workpiece to be welded is placed in the middle of the fastening ring 6, and a plurality of electric telescopic columns 5 are designed. When the workpiece to be welded needs to be fixed, the telescopic end of each electric telescopic column 5 is controlled to move so that the telescopic end of each electric telescopic column 5 contacts the fastening ring 6, and drives the fastening ring 6 to adhere to the surface of the workpiece to be welded. Due to the design of multiple electric telescopic columns 5, the workpiece to be welded can be tightly fixed under the pressure of the multiple electric telescopic columns 5. Moreover, under the action of the fastening ring 6 and the friction ball on its inner wall, welded parts of different shapes can be fixed, thereby improving the practicality of this high-precision automatic welding robot.

[0047] When the workpiece to be welded has not yet moved to the position corresponding to the welding head 402, the transfer disc 2 will drive the first contact 202 to rotate synchronously, and will gradually drive the first contact 202 to contact the second contact 7. At this time, the external circuit is connected, and the external controller will first control the transfer disc 2 to stop running, and drive the adjusting mechanism to drive the robotic arm 401 to move, thereby improving the automation function of the welding robot in the present invention; when the first contact 202 is in contact with the second contact 7, and the external controller drives the adjusting mechanism to drive, the external controller will control the driving motor 2 to drive the threaded rod 8 to rotate, and the threaded rod 8 will drive the arm slide 9 on its outer circumference to move up and down, so that the arm slide 9 drives the robotic arm 401 to move to the side close to the workpiece to be welded, and then the robotic arm 401 will drive the welding head 402 to move to the surface of the workpiece to be welded, and perform welding processing on the workpiece to be welded;

[0048] Refer to the attached Figure 2 and Figure 5 As shown, since the robot arm 401 is ball-connected to the side of the arm slide 9, the robot arm 401 can rotate 360 ​​degrees on the side of the arm slide 9, which is convenient for multi-angle fine adjustment of the welding workpiece with inclined surfaces or arc surfaces, thereby helping to improve the welding effect when welding inclined surfaces or arc surface structures. Moreover, when the robot arm 401 and the welding head 402 move to the surface of the workpiece to be welded, if the welding head 402 is not in contact with the workpiece to be welded, the telescopic end of the electric telescopic column 2 12 can be continued to be controlled to move, so that the telescopic end of the electric telescopic column 2 12 drives the welding head 402 to further contact with the workpiece to be welded, thereby controlling the movement of the welding head 402. The movable position can be finely adjusted to improve the welding effect of parts to be welded with different shapes; when there are parts to be welded inside the placement rack 3, the shielding plate 14 is located below the discharge chute 13 and blocks the discharge chute 13; when the welding of the parts to be welded is completed, the transfer disc 2 is controlled to continue to rotate, so that the transfer disc 2 drives the welded parts to move to the side close to the transmission cylinder 15, and then under the action of the receiving unit, the shielding plate 14 will first be moved away from the discharge chute 13, and the welded parts will fall from the discharge chute 13 to the inside of the transmission cylinder 15, realizing the automatic receiving function of the welded parts, thereby facilitating the subsequent welding of the remaining parts to be welded;

[0049] When the first contact 202 and the third contact 16 are in contact, under the control of the external controller, the external drive motor 3 will drive the rotating gear 17 to rotate, and the rotating gear 17 will drive the ratchet plate 18 engaged with it to move, and the two ratchet plates 18 will move away from each other, that is, the two ratchet plates 18 will drive the connecting bracket 19 and the baffle plate 14 to move, and the two baffle plates 14 will move away from each other and no longer block the discharge chute 13, so that the welded parts will fall along the discharge chute 13 to the inside of the transmission cylinder 15, realizing automatic material collection processing of the welded parts.

[0050] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision automatic welding robot, comprising a workbench (1), characterized in that: A transfer plate (2) is rotatably provided above the workbench (1), a rotating shaft (201) is fixedly installed on the lower end surface of the transfer plate (2), and the lower end surface of the rotating shaft (201) is connected to an output end of an external drive motor. A plurality of placement racks (3) are provided on the upper end surface of the transfer plate (2), and the placement racks (3) are used to place the parts to be welded. A fixing mechanism is provided inside the placement racks (3), and the fixing mechanism is used to fix the parts to be welded. A fixing mechanism is fixedly provided above the workbench (1) and on the side of the transfer plate (2). A support frame (4) is provided, a mechanical arm (401) is provided above the support frame (4), a welding head (402) is provided on the side of the mechanical arm (401), an adjustment mechanism is provided above the support frame (4), the adjustment mechanism is used to adjust the mechanical arm (401), the adjustment mechanism includes a threaded rod (8) rotatably provided above the support frame (4), the bottom end of the threaded rod (8) is connected to the second output end of the external drive motor, and an arm slide seat (9) is provided on the outer peripheral surface of the threaded rod (8) in a threaded manner; The fixing mechanism includes an electric telescopic column (5) fixedly mounted on the inner wall of the placement rack (3); a fastening ring (6) is provided inside the placement rack (3); the fastening ring (6) is made of a soft, high-temperature-resistant material; the inner wall of the fastening ring (6) is provided with friction balls designed in a circular array; a plurality of the electric telescopic columns (5) are provided and are designed in equal proportions on the inner wall of the placement rack (3); A discharge trough (13) is provided below the placement rack (3), and a shielding plate (14) is slidably provided below the placement rack (3). Two groups of shielding plates (14) are provided to shield the discharge trough (13). A transmission cylinder (15) is provided above the workbench (1), and the transmission cylinder (15) is located below the transfer plate (2). A receiving unit is provided on the outside of the transmission cylinder (15), and the receiving unit is used to automatically receive the welded parts after welding.

2. A high-precision automatic welding robot according to claim 1, characterized in that: A first contact (202) is fixedly mounted on the outer peripheral surface of the transfer plate (2), and a second contact (7) is mounted on the side of the support frame (4). A plurality of first contacts (202) are provided, and are designed to correspond one to one with the plurality of placement frames (3). The transfer plate (2) drives the first contact (202) to rotate during the rotation process, and the first contact (202) contacts the second contact (7).

3. A high-precision automatic welding robot according to claim 2, characterized in that: The robotic arm (401) is spherically connected to the side of the arm slide (9).

4. The high-precision automatic welding robot according to claim 2, characterized in that: The adjustment mechanism further comprises a limit frame (10) mounted on the end of the robotic arm (401), the inner wall of the limit frame (10) being provided with a limit slot (11), the welding head (402) being slidably arranged inside the limit slot (11), the slot wall of the limit slot (11) being fixedly mounted with an electric telescopic column 2 (12), the telescopic end of the electric telescopic column 2 (12) being connected to the surface of the welding head (402).

5. The high-precision automatic welding robot according to claim 1, characterized in that: The material receiving unit includes a third contact point (16) installed on the surface of the transmission cylinder (15). When the transfer disc (2) drives the first contact point (202) to rotate, the first contact point (202) contacts the third contact point (16).

6. The high-precision automatic welding robot according to claim 1, characterized in that: The receiving unit further comprises a rotating gear (17) rotatably mounted below the placement rack (3), the outer surface of the rotating gear (17) being connected to the three output terminals of the external drive motor, two groups of ratchet plates (18) being slidingly arranged below the placement rack (3), the outer peripheral surfaces of the rotating gear (17) being respectively engaged with the two groups of ratchet plates (18), the side walls of the two groups of ratchet plates (18) being fixedly connected with connecting brackets (19), and the two groups of connecting brackets (19) being respectively connected to the two groups of shielding plates (14) on the side away from the ratchet plates (18).

7. The high-precision automatic welding robot according to claim 6, characterized in that: A plurality of rectangular retaining grooves (20) are provided on the lower side of the interior of the placement rack (3), and the two groups of shielding plates (14) and the two groups of ratchet plates (18) are respectively slidably arranged inside the corresponding rectangular retaining grooves (20).

8. The high-precision automatic welding robot according to claim 7, characterized in that: A rubber pad is provided inside the transmission cylinder (15), and the lower end of the transmission cylinder (15) is connected to an external transmission belt.

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