Efficient automatic welding robot

Abstract

The invention relates to a high-efficiency automatic welding robot which comprises a workbench, a rotating seat, a double-welding positioning unit, a single-gun-head welding device, a power device, a clutch device and a clutch driving device. A rotating seat is arranged in the center of the workbench, welding positioning units are symmetrically arranged on the two sides of the workbench, each unit comprises a first rotating table and a second rotating table, symmetrical workpiece positioning holes are formed in the first rotating table, the second rotating table is located below the first rotating table and flush with the workbench surface, and the workpiece positioning holes can rotate to the position over the second rotating table along with the first rotating table; the power device drives the second rotating tables on the two sides to rotate, and the clutch device controls connection and separation of the first rotating table and the power device. The equipment adopts the design of double stations and a 180-degree rotating single gun head, and parallel welding and material changing are realized through cooperation of a clutch device and a clutch driving device; when one side is welded, materials can be synchronously changed on the other side, shutdown is not needed, and idle time is eliminated; the equipment is compact in structure, station switching does not need manual intervention, operation is easy and convenient, and the skill requirement and labor intensity of personnel are lowered.

Description

Technical Field

[0001] This invention relates to the field of welding robot technology, and in particular to a high-efficiency automated welding robot. Background Technology

[0002] In the field of pipe and flange welding production, the efficiency, stability, and consistency of welding operations directly affect product quality and production capacity. Currently, existing pipe and flange welding equipment often suffers from problems such as discontinuous work processes and insufficient automation. Traditional welding equipment typically employs a single-station design, meaning that after welding one workpiece, the machine must be stopped for disassembly and reassembly. During this process, the welding equipment remains idle, resulting in low equipment utilization, long production cycles, and difficulty in meeting the demands of large-scale continuous production.

[0003] Therefore, developing a high-efficiency automated welding robot with a compact structure, precise positioning, and the ability to perform welding and material changing in parallel has become a key requirement for solving the current pain points in pipeline and flange welding production. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a highly efficient automated welding robot.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-efficiency automated welding robot includes a worktable with a rotating base at its center. Welding positioning units are located on both the left and right sides of the worktable. A single-gun welding device is mounted on the rotating base and positioned between the two welding positioning units. Each welding positioning unit includes a first rotating platform and a second rotating platform rotatably mounted on the worktable. The first rotating platform is located on the end face of the worktable and has two workpiece positioning holes symmetrically arranged around its axis. The second rotating platform is used to place the workpiece to be welded and is located below the first rotating platform. The upper surfaces of the two rotary tables are flush with the worktable. The workpiece positioning hole can rotate with the first rotary table to be directly above the second rotary table. A power device and a clutch device are also provided on the worktable. The power device is used to drive the second rotary tables on the left and right sides to rotate. The clutch device is used to connect and disconnect the first rotary table from the power device. A clutch drive device is provided on the rotary seat. When the rotary seat drives the single-gun welding device to rotate toward the welding positioning unit on one side, the clutch drive device can be used to drive the clutch device to work, thereby connecting the first rotary table on the other side to the power device.

[0007] In some embodiments, the power unit includes a central support ring disposed at the lower end of the worktable, the central support ring being coaxially arranged with the rotary seat, and a gear ring being rotatably sleeved on the outer side of the central support ring. A motor mounting base is also disposed at the lower end of the worktable, a motor is disposed on the motor mounting base, a drive gear that meshes with the gear ring is disposed on the output shaft of the motor, and a first transmission gear that meshes with the gear ring is disposed at the lower ends of both second rotary tables.

[0008] In some embodiments, the clutch device includes an arc-shaped frame disposed at the lower end of the worktable, with a first arc-shaped groove provided at both ends of the arc-shaped frame, a first slider sliding in each of the two first arc-shaped grooves, a clutch gear rotatably disposed on the first slider, and a second transmission gear disposed at the lower end of the first rotary table. The clutch gear is disposed between the first transmission gear and the second transmission gear and can simultaneously mesh or disengage with the first transmission gear and the second transmission gear.

[0009] In some embodiments, a first spring is connected between the end of the arc-shaped frame and the first slider, and the clutch gear keeps the first transmission gear and the second transmission gear in a disengaged state under the action of the first spring.

[0010] In some embodiments, the clutch drive device includes a drive rod, a first clearance slot is provided on one side of the rotating seat, and a second arc-shaped slide groove is provided on the lower inner side of the first clearance slot. The drive rod is movably disposed in the first clearance slot, and a second slider that can slide in the second arc-shaped slide groove is provided at its inner end. The outer end of the drive rod can move the first slider, thereby causing the clutch gear to mesh with the first transmission gear and the second transmission gear simultaneously.

[0011] In some embodiments, a second clearance slot is provided on one side of the rotating seat and below the first clearance slot, and elastic paddles are spaced apart in the second clearance slot. The lower end of the second slider extends into the second clearance slot and is located between the two elastic paddles.

[0012] In some embodiments, the single-gun welding device includes a stand, a vertically arranged linear module is provided on one side of the stand, a support arm is provided on the linear module, and a welding gun is provided on the support arm.

[0013] In some embodiments, an inverted L-shaped frame is provided on the support arm, and an elastic pressure plate assembly for pressing the workpiece to be welded is rotatably provided on the lower side of the outer end of the inverted L-shaped frame.

[0014] In some embodiments, the elastic pressure plate assembly includes a support plate and a pressure plate. A plurality of guide posts are evenly distributed along the circumference at the upper end of the pressure plate. Each guide post passes through the support plate and is provided with a limit block. A second spring is sleeved on each guide post and is located between the support plate and the pressure plate.

[0015] In some embodiments, the lower end of the workbench is provided with a plurality of support legs.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The equipment adopts a symmetrical dual welding positioning unit design, coupled with a single-gun welding device that can rotate 180°. Through the coordinated control of the clutch device and clutch drive device, the welding process and the material change process can be carried out in parallel. When the second rotary table of one welding positioning unit drives the workpiece for circumferential welding, the other welding positioning unit can simultaneously assemble and place the workpiece to be welded, without stopping the machine to wait for material change. This completely eliminates the idle time for material change of traditional single-station equipment, greatly shortens the production cycle, and achieves continuous and efficient production.

[0018] 2. The equipment is based on a worktable, with a rotating base at the center and dual welding positioning units symmetrically distributed on both sides. The structure is compact and occupies little space. When the rotating base drives the single-gun welding device to rotate 180° horizontally, the clutch drive can synchronously control the clutch operation, achieving automatic connection and separation between the power unit and the first rotating table on the other side, without manual intervention. Simultaneously, workpiece placement and removal are simple, reducing the skill requirements and labor intensity for operators. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0020] Figure 2 This is a front view schematic diagram of the present invention.

[0021] Figure 3 For the present invention Figure 2 Enlarged diagram of point A.

[0022] Figure 4 This is an exploded view of the worktable and the first rotary table of the present invention.

[0023] Figure 5 This is a partial cross-sectional view of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure of the bottom of the workbench of the present invention.

[0025] Figure 7 For the present invention Figure 6Enlarged diagram of point B.

[0026] Figure 8 For the present invention Figure 6 Enlarged diagram of point C.

[0027] Figure 9 This is a partial cross-sectional view of the rotating base of the present invention. Detailed Implementation

[0028] The following detailed description provides various embodiments or examples for carrying out the present invention. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0029] like Figures 1-7 The diagram illustrates a high-efficiency automated welding robot, comprising a worktable 1, a rotating base 2 at the center of the worktable 1, and welding positioning units on both the left and right sides of the worktable 1. A single-gun welding device is mounted on the rotating base 2 and positioned between the two welding positioning units. Each welding positioning unit includes a first rotating platform 3 and a second rotating platform 4 rotatably mounted on the worktable 1. The first rotating platform 3 is located on the end face of the worktable 1 and has two workpiece positioning holes 5 symmetrically arranged around its axis. The second rotating platform 4 is used to place the workpiece to be welded and is located below the first rotating platform 3. The second rotary table 4 is flush with the upper surface of the worktable 1. The workpiece positioning hole 5 can rotate with the first rotary table 3 to be directly above the second rotary table 4. A power device and a clutch device are also provided on the worktable 1. The power device is used to drive the second rotary tables 4 on the left and right sides to rotate. The clutch device is used to connect and disconnect the first rotary table 3 from the power device. A clutch drive device is provided on the rotary seat 2. When the rotary seat 2 drives the single-gun welding device to rotate toward the welding positioning unit on one side, the clutch drive device can drive the clutch device to work, thereby connecting the first rotary table 3 on the other side to the power device.

[0030] In the initial state: First, the single-gun welding device is driven by the rotating base 2 and faces the welding positioning unit on the left. Second, in terms of workpiece placement, the two workpiece positioning holes 5 symmetrically arranged on the first rotating platform 3 on the left are used to place the assembled flange and pipe workpieces, while only the outer workpiece positioning hole 5 on the first rotating platform 3 on the right is used to place the workpiece. Third, the clutch state is adapted to the welding direction. At this time, the clutch device on the left is in the disengaged state, the first rotating platform 3 on the left cannot be driven by the power device, and the first rotating platform 3 on the right can be driven by the power device. Fourth, the workpiece on the inner side of the first rotating platform 3 on the left is exactly located on the second rotating platform 4 on the left.

[0031] Once the initial state is ready, welding and workpiece transport start simultaneously: the power unit starts, driving the second rotary table 4 on the left to rotate, causing the workpiece located directly above it (within the workpiece positioning hole 5) on the left side to perform a 360° circular motion. At the same time, the single-gun welding device starts, performing continuous circular welding on the inner workpiece that rotates with the second rotary table 4. After the workpiece completes a 360° rotation, the welding operation ends. Finally, during the welding process, the first rotary table 3 on the right side simultaneously completes a 180° rotation, transporting the workpiece originally on the outside to the inside, precisely placing it directly above the second rotary table 4, preparing for the next welding operation.

[0032] After the workpiece on the inner left side is welded, the rotating seat 2 drives the single-gun welding device to rotate horizontally by 180°, switching to the welding positioning unit facing the right. During the rotation, the clutch drive device on the rotating seat 2 synchronously drives the clutch device to operate, completing the state switch: the left clutch device switches from the disengaged state to the engaged state; the right clutch device switches from the engaged state to the disengaged state.

[0033] After the workstation switch is completed, the equipment enters a dual-side parallel operation state: the power unit drives the second rotary table 4 on the right to rotate, and at the same time, the clutch device drives the first rotary table 3 on the left to rotate 180°, transporting the workpiece to be welded on the outer side of the left to the inner side (directly above the second rotary table 4). The single-gun welding device starts simultaneously, performing 360° circumferential welding on the workpiece currently on the inner side of the right. At the same time, the left side can simultaneously carry out material changing operations: the operator removes the welded workpiece (which has been transported to the outer side with the rotation) from the first rotary table 3 on the left, and puts the new workpiece to be welded into the empty workpiece positioning hole 5, completing the material changing and pre-positioning.

[0034] After the workpiece on the right side is welded, the rotating seat 2 drives the single-gun welding device to rotate 180° to the left. The clutch drive device simultaneously switches between the clutch states (left side returns to the disengaged state, right side returns to the connected state). The equipment repeats the alternating operation process of welding on the left / changing material on the right and welding on the right / changing material on the left. Through this cyclical mode, seamless connection between welding and material changing is achieved, without stopping the machine throughout the process, ensuring continuous and efficient production.

[0035] See Figures 5-7 As shown, the power unit includes a central support ring 21 located at the lower end of the worktable 1. The central support ring 21 is coaxially arranged with the rotating seat 2, and a gear ring 22 is rotatably sleeved on the outer side of the central support ring 21. A motor mounting seat 23 is also provided at the lower end of the worktable 1. A motor 24 is provided on the motor mounting seat 23. A drive gear 25 that meshes with the gear ring 22 is provided on the output shaft of the motor 24. A first transmission gear 26 that meshes with the gear ring 22 is provided at the lower ends of both second rotating tables 4.

[0036] When the equipment starts and requires power output, the motor 24 is energized and runs, driving the drive gear 25 on the output shaft to rotate synchronously. Since the drive gear 25 meshes with the gear ring 22, the rotational power is transmitted to the gear ring 22 through the gear meshing relationship. The gear ring 22 is driven to rotate uniformly around the central support ring 21 (coaxial with the rotating seat 2), completing the input and initial transmission of power. When the gear ring 22 rotates under the drive of the drive gear 25, the concentrated rotational power is synchronously distributed to the two second rotating platforms 4 on both sides through the meshing relationship between the gear ring 22 and the two first transmission gears 26, driving the two first transmission gears 26 to rotate synchronously, thereby driving the second rotating platform 4 fixedly connected to it to rotate around its own axis.

[0037] See Figures 6-8 As shown, the clutch device includes an arc-shaped frame 31 located at the lower end of the worktable 1. A first arc-shaped groove 32 is provided at both ends of the arc-shaped frame 31. A first slider 33 slides within each of the two first arc-shaped grooves 32. A clutch gear 34 is rotatably mounted on the first slider 33. A second transmission gear 35 is provided at the lower end of the first rotary table 3. The clutch gear 34 is located between the first transmission gear 26 and the second transmission gear 35 and can simultaneously mesh or disengage with the first transmission gear 26 and the second transmission gear 35.

[0038] Furthermore, a first spring 41 is connected between the end of the arc-shaped frame 31 and the first slider 33, and the clutch gear 34 keeps the first transmission gear 26 and the second transmission gear 35 in a separated state under the action of the first spring 41.

[0039] In the normal reset (disconnected state), a first spring 41 connects the end of the arc-shaped frame 31 to the first slider 33. The first spring 41 is in a naturally extended state and applies a continuous elastic thrust to the first slider 33. This elastic force drives the first slider 33 to slide along the first arc-shaped groove 32 away from the transmission gear, thereby driving the clutch gear 34 to move synchronously, keeping the clutch gear 34 disconnected from both the first transmission gear 26 and the second transmission gear 35. At this time, the rotational power of the first transmission gear 26 cannot be transmitted to the second transmission gear 35 through the clutch gear 34.

[0040] In the clutch engaged (connected state) state, when the equipment needs to drive the first rotary table 3 to rotate (such as synchronously conveying workpieces during welding), the clutch acts on the first slider 33, overcoming the elastic thrust of the first spring 41, and pushing the first slider 33 to slide along the first arc-shaped slide groove 32 towards the transmission gear until the clutch gear 34 simultaneously and precisely meshes with the first transmission gear 26 and the second transmission gear 35. At this time, the rotational power of the first transmission gear 26 is synchronously transmitted to the second transmission gear 35 through the clutch gear 34, causing the second transmission gear 35 to rotate synchronously, thereby driving the first rotary table 3, which is fixedly connected to it, to rotate, thus achieving effective power transmission.

[0041] Of course, to ensure the compatibility of the equipment's operating logic, the first transmission gear 26 and the second transmission gear 35 are designed with a preset transmission ratio. By reasonably matching the number of teeth of the two, the transmission ratio of the two meets the core requirement of 1:2 (i.e., the number of teeth of the first transmission gear 26: the number of teeth of the second transmission gear 35 = 1:2). When the first transmission gear 26 completes a 360° rotation under the drive of the power device, the second transmission gear 35 will rotate 180° synchronously.

[0042] See Figures 6-9 As shown, the clutch drive device includes a drive rod 51, a first clearance slot 52 is provided on one side of the rotating seat 2, and a second arc-shaped slide groove 53 is provided on the lower side inside the first clearance slot 52. The drive rod 51 is movably disposed in the first clearance slot 52, and a second slider 54 that can slide in the second arc-shaped slide groove 53 is provided at its inner end. The outer end of the drive rod 51 can move the first slider 33, thereby causing the clutch gear 34 to mesh with the first transmission gear 26 and the second transmission gear 35 simultaneously.

[0043] Furthermore, a second clearance slot 61 is provided on one side of the rotating seat 2 and below the first clearance slot 52. Elastic paddles 62 are spaced apart in the second clearance slot 61. The lower end of the second slider 54 extends into the second clearance slot 61 and is located between the two elastic paddles 62.

[0044] A first clearance slot 52 is provided on one side of the rotating seat 2. A second arc-shaped slide groove 53 is provided on the lower side of the first clearance slot 52 along an arc-shaped trajectory. The drive rod 51 is movably assembled in the first clearance slot 52 and is located between the first sliders 33 of the clutch devices on both sides. Its core function is to move the first sliders 33 on the corresponding side by rotating the rotating seat 2 left and right. A second slider 54 is fixedly provided on the inner end of the drive rod 51. The second slider 54 is slidably adapted to the second arc-shaped slide groove 53 and can slide smoothly along the second arc-shaped slide groove 53. The outer end of the drive rod 51 extends to the outside of the first clearance slot 52, corresponding to the position of the first sliders 33 on both sides, so that the first sliders 33 on the corresponding side can be precisely moved when the rotating seat 2 rotates left and right.

[0045] To achieve the reset and positioning of the drive rod 51 after its movement, and to ensure the rotating seat 2 rotates into position in conjunction with the second slider 54 and the second arc-shaped slide groove 53, a second clearance groove 61 is provided on one side of the rotating seat 2, directly below the first clearance groove 52. Two elastic levers 62 are fixedly spaced inside the second clearance groove 61, arranged symmetrically to form a limiting range. The lower end of the second slider 54 at the inner end of the drive rod 51 extends downward into the second clearance groove 61, precisely between the two elastic levers 62. The elastic levers 62 possess a certain elastic deformation capability, which on the one hand can elastically clamp and limit the second slider 54, ensuring the stability of the initial position of the drive rod 51, while not affecting the sliding of the second slider 54 along the second arc-shaped slide groove 53; on the other hand, it can provide elastic reset force when the drive rod 51 resets, assisting the drive rod 51 in returning to its initial position. Overall, the core functions of the second slider 54, the second arc-shaped groove 53, and the elastic lever 62 are: to adapt to the structural feature that the included angle between the two first sliders 33 is less than 180°, to make up for the mismatch between the rotation requirement of the rotating seat 2 to rotate 180° and the included angle of the first slider 33, and to ensure that when the drive rod 51 moves the corresponding first slider 33 to the limit position, the second slider 54 can still continue to slide along the second arc-shaped groove 53. The elastic lever 62 simultaneously undergoes elastic deformation to avoid interference, ensuring that the rotating seat 2 can be smoothly rotated to the preset orientation position and avoiding structural interference.

[0046] Under normal conditions (when the rotating seat does not drive the single-gun welding device to switch orientation), the drive rod 51 is in the initial position within the first clearance slot 52 under the elastic clamping and limiting action of the elastic lever 62. At this time, the outer end of the drive rod 51 does not contact the first slider 33 of the clutch device. The clutch device remains in a disengaged state under the action of the first spring 41. The clutch gear 34 is in a disengaged state with the first transmission gear 26 and the second transmission gear 35.

[0047] When the clutch needs to be engaged (i.e., when the rotating seat 2 drives the single-gun welding device to rotate and change direction), the rotating seat 2 rotates around its own axis, and the clutch drive device rotates synchronously with the rotating seat 2. During the rotation, the drive rod 51 is adapted to the rotation trajectory and swings synchronously toward the corresponding side first slider 33. Its outer end precisely contacts and moves the first slider 33 on that side, applying a driving force to the first slider 33 in the direction of the transmission gear. At the same time, the drive rod 51 drives the second slider 54 to slide synchronously along the second arc-shaped slide groove 53. The second slider 54 presses the corresponding side elastic lever 62 to cause it to elastically deform and move away from the initial limit position. When the drive rod 51 moves the first slider 33 on this side to its limit position (cannot be pushed further), the clutch gear 34 engages with the first transmission gear 26 and the second transmission gear 35 at the same time. Since the second slider 54 can slide along the second arc-shaped slide groove 53 and the elastic paddle 62 can further deform to avoid it, the rotating seat 2 can continue to rotate until it completes the preset 180° rotation and is accurately positioned. At this time, the second slider 54 also slides to the limit position of the second arc-shaped slide groove 53 (cannot be pushed further), thus ensuring that the switching action is in place.

[0048] When the rotating seat 2 rotates again to change its orientation, the rotation direction of the rotating seat 2 changes, and the drive rod 51 swings synchronously to the other side along the rotation trajectory, disengaging from the first slider 33 that has been moved to its limit position. At this time, the elastic deformation of the elastic lever 62 returns to its original state, applying an elastic restoring force to the second slider 54, pushing the second slider 54 to slide back to its initial position along the second arc-shaped groove 53. The drive rod 51 returns to its original state synchronously, preparing for the next movement. Subsequently, under the action of the elastic restoring force of the first spring 41, the first slider 33 drives the clutch gear 34 to return to its original state, disengaging from the first transmission gear 26 and the second transmission gear 35, and the clutch device returns to its disengaged state. Throughout the entire operation, the clutch drive device triggers the precise movement of the drive rod 51 through the rotation of the rotating seat 2, achieving linkage control with the clutch device. The cooperation of the second slider 54, the second arc-shaped slide groove 53, and the elastic lever 62 effectively solves the problem of matching the included angle of the first slider 33 with the 180° rotation requirement of the rotating seat, ensuring that the rotating seat can rotate to the preset position, with rapid action response and reliable reset. Ultimately, it realizes the automated and precise control of the clutch device's engagement / disengagement action, adapting to the core operation logic of alternating welding and material changing on both sides of the equipment.

[0049] See Figures 1-3 As shown, the single-gun welding device includes a stand 71, a vertically arranged linear module 72 is provided on one side of the stand 71, a support arm 73 is provided on the linear module 72, a welding gun 74 is provided on the support arm 73, an inverted L-shaped frame 81 is provided on the support arm 73, and an elastic pressure plate assembly 82 for pressing the workpiece to be welded is rotatably arranged on the lower side of the outer end of the inverted L-shaped frame 81.

[0050] A vertically arranged linear module 72 is fixedly installed on one side of the support frame 71. The linear module 72 serves as a vertical adjustment mechanism, and a support arm 73 is fixedly connected to its moving end. The support arm 73 extends horizontally and is used to support the welding torch 74 and the elastic pressure plate assembly 82. The welding torch 74 is fixedly installed on the support arm 73 and is aligned with the joint between the pipe 101 and the flange 100 of the workpiece to be welded, for performing circumferential welding operations.

[0051] To ensure the positioning stability of the workpiece (the assembly of pipe 101 and flange 100) during the welding process and to prevent the workpiece from shifting when rotating, an inverted L-shaped frame 81 is fixedly installed on the support arm 73. The horizontal section of the inverted L-shaped frame 81 extends outward to directly above the welding position corresponding to the welding gun 74, and an elastic pressure plate assembly 82 is installed on the lower side of its outer end through a rotational engagement.

[0052] Furthermore, the elastic pressure plate assembly 82 includes a support plate 91 and a pressure plate 92. Several guide posts 93 are evenly distributed around the upper end of the pressure plate 92. Each guide post 93 passes through the support plate 91 and is provided with a limit block 94. A second spring 95 is sleeved on each guide post 93. The second spring 95 is located between the support plate 91 and the pressure plate 92. A conical block that can be inserted into the upper end of the pipe 101 is provided at the lower end of the pressure plate 92.

[0053] The support plate 91 is fixedly connected to the lower side of the outer end of the inverted L-shaped frame 81, serving as the load-bearing base of the component. The pressure plate 92 is located directly below the support plate 91 and is used to directly contact the workpiece and apply clamping force. Several guide posts 93 are evenly arranged along the circumferential direction at the upper end of the pressure plate 92. Each guide post 93 passes vertically upward through the corresponding guide hole on the support plate 91, and a limit block 94 is fixedly installed at the top. The limit block 94 is used to limit the downward movement of the guide post 93 and prevent the pressure plate 92 from detaching from the support plate 91. A second spring 95 is sleeved on each guide post 93. The second spring 95 is located between the support plate 91 and the pressure plate 92. When in its natural state, it can push the pressure plate 92 downward. A conical block (shown in the attached figure) is provided at the center of the lower end of the pressure plate 92. The size of the conical block is adapted to the inner diameter of the upper end of the pipe 101, which can be accurately inserted into the upper end of the pipe 101 to achieve radial positioning of the workpiece.

[0054] After welding is started, the power unit drives the second rotary table 4 to rotate, causing the workpiece to be welded (the assembly of pipe 101 and flange 100) to make uniform circular motion; at the same time, the pressure plate 92 of the elastic pressure plate assembly 82 is in contact with the upper end face of the workpiece under the action of the clamping force and rotates synchronously with the workpiece; the welding torch 74 is started to perform continuous circular welding on the joint between pipe 101 and flange 100 during the rotation.

[0055] In this invention, the lower end of the workbench 1 is provided with a plurality of support legs 10.

[0056] Based on the accompanying drawings and the foregoing illustrations and descriptions, the basic principles and main features of the present invention, as well as its advantages, those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency automated welding robot, characterized in that: The device includes a workbench (1), a rotating seat (2) at the center of the workbench (1), welding positioning units on both the left and right sides of the workbench (1), and a single-gun welding device on the rotating seat (2) between the two welding positioning units. Each welding positioning unit includes a first rotating table (3) and a second rotating table (4) rotatably mounted on the workbench (1). The first rotating table (3) is located on the end face of the workbench (1), and two workpiece positioning holes (5) are symmetrically arranged on the first rotating table (3) around its axis. The second rotating table (4) is used to place the workpiece to be welded and is located below the first rotating table (3). The upper surface of the platform (4) is flush with the upper surface of the worktable (1). The workpiece positioning hole (5) can rotate with the first rotating platform (3) to the top of the second rotating platform (4). A power device and a clutch device are also provided on the worktable (1). The power device is used to drive the second rotating platforms (4) on the left and right sides to rotate. The clutch device is used to connect and separate the first rotating platform (3) from the power device. A clutch drive device is provided on the rotating seat (2). When the rotating seat (2) drives the single-gun welding device to rotate toward the welding positioning unit on one side, the clutch drive device can drive the clutch device to work, thereby connecting the first rotating platform (3) on the other side to the power device.

2. The high-efficiency automated welding robot according to claim 1, characterized in that: The power unit includes a central support ring (21) located at the lower end of the worktable (1). The central support ring (21) is coaxially arranged with the rotating seat (2), and a gear ring (22) is rotatably sleeved on the outer side of the central support ring (21). A motor mounting seat (23) is also provided at the lower end of the worktable (1). A motor (24) is provided on the motor mounting seat (23). A drive gear (25) meshing with the gear ring (22) is provided on the output shaft of the motor (24). A first transmission gear (26) meshing with the gear ring (22) is provided at the lower end of each of the two second rotating tables (4).

3. The high-efficiency automated welding robot according to claim 2, characterized in that: The clutch device includes an arc-shaped frame (31) located at the lower end of the worktable (1). A first arc-shaped groove (32) is provided at both ends of the arc-shaped frame (31). A first slider (33) slides in both of the first arc-shaped grooves (32). A clutch gear (34) is rotatably arranged on the first slider (33). A second transmission gear (35) is provided at the lower end of the first rotary table (3). The clutch gear (34) is located between the first transmission gear (26) and the second transmission gear (35) and can simultaneously mesh or disengage with the first transmission gear (26) and the second transmission gear (35).

4. The high-efficiency automated welding robot according to claim 3, characterized in that: A first spring (41) is connected between the end of the arc frame (31) and the first slider (33). Under the action of the first spring (41), the clutch gear (34) keeps the first transmission gear (26) and the second transmission gear (35) separated from it.

5. A high-efficiency automated welding robot according to claim 4, characterized in that: The clutch drive device includes a drive rod (51), a first clearance slot (52) is provided on one side of the rotating seat (2), and a second arc-shaped slide groove (53) is provided on the lower side inside the first clearance slot (52). The drive rod (51) is movably disposed in the first clearance slot (52), and a second slider (54) is provided at its inner end, which can slide in the second arc-shaped slide groove (53). The outer end of the drive rod (51) can move the first slider (33), thereby causing the clutch gear (34) to mesh simultaneously with the first transmission gear (26) and the second transmission gear (35).

6. A high-efficiency automated welding robot according to claim 5, characterized in that: A second clearance slot (61) is provided on one side of the rotating seat (2) and below the first clearance slot (52). Elastic paddles (62) are provided at intervals in the second clearance slot (61). The lower end of the second slider (54) extends into the second clearance slot (61) and is located between the two elastic paddles (62).

7. The high-efficiency automated welding robot according to claim 1, characterized in that: The single-gun welding device includes a stand (71), a vertically arranged linear module (72) is provided on one side of the stand (71), a support arm (73) is provided on the linear module (72), and a welding gun (74) is provided on the support arm (73).

8. A high-efficiency automated welding robot according to claim 7, characterized in that: An inverted L-shaped frame (81) is provided on the support arm (73), and an elastic pressure plate assembly (82) for pressing the workpiece to be welded is rotatably provided on the lower side of the outer end of the inverted L-shaped frame (81).

9. A high-efficiency automated welding robot according to claim 8, characterized in that: The elastic pressure plate assembly (82) includes a support plate (91) and a pressure plate (92). Several guide posts (93) are evenly distributed around the upper end of the pressure plate (92). Each guide post (93) passes through the support plate (91) and is provided with a limit block (94). A second spring (95) is sleeved on each guide post (93). The second spring (95) is located between the support plate (91) and the pressure plate (92).

10. A high-efficiency automated welding robot according to claim 1, characterized in that: The workbench (1) is provided with several support feet (10) at its lower end.

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