Mechanical arm positioning assembly and part welding processing equipment

Abstract

The utility model relates to welding equipment technical field, concretely is a kind of mechanical arm positioning assembly and part welding processing equipment, for solving the problem of insufficient positioning accuracy and annular weld jointing difficulty when pipe fitting and plate piece are welded;The mechanical arm positioning assembly is rotated by the drive arc-shaped transmission hole of transmission disc of stepping motor, makes the blocking rod move along hole, and is radially retracted by transmission rod and drives clamping plate, realizes the automatic centering and clamping of pipe fitting;Part welding processing equipment includes the sliding ring that can rotate around installation cover, and sliding ring is achieved circumferential motion by the meshing of first drive motor, gear and tooth ring;The utility model has realized the accurate positioning of pipe fitting and the one-time forming welding of annular weld.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a robotic arm positioning component and a welding and processing equipment for parts. Background Technology

[0002] In industrial manufacturing, particularly in the automotive, aerospace, and pressure vessel industries, it is frequently necessary to weld and assemble tubular parts (hereinafter referred to as "pipes") with plate-shaped parts (hereinafter referred to as "plates"). Such welding operations place extremely high demands on the positioning accuracy of the pipes and the uniformity and integrity of the weld seams. Traditional welding methods often rely on manual labor or simple tooling fixtures for positioning and welding, which has many drawbacks.

[0003] Firstly, in terms of positioning, traditional clamps are usually fixed or manually adjustable, making it difficult to achieve fast and accurate automatic centering and clamping. For pipe fittings of different diameters, clamps need to be replaced or significantly adjusted, which is cumbersome, inefficient, and makes it difficult to guarantee concentricity for each clamping, easily leading to substandard weld quality due to positioning deviations during welding.

[0004] Secondly, during the welding process, in order to complete the circumferential weld at the joint between the pipe and the plate, it is usually necessary for a robotic arm to carry the welding torch in a circular motion around the pipe, or for the workpiece to be welded to rotate itself. The former requires extremely high precision in the control of the robotic arm's motion trajectory and repeatability, making the system complex and costly; the latter requires an additional rotating worktable, which is difficult to implement and lacks flexibility for large or partially assembled components. To address the aforementioned problems, this technical solution proposes a robotic arm positioning component and a parts welding and processing equipment. Utility Model Content

[0005] The purpose of this utility model is to solve the problems of insufficient positioning accuracy and high difficulty in welding circumferential welds when welding pipe fittings and plates, and to propose a robotic arm positioning component and parts welding processing equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A robotic arm positioning assembly includes a mounting cover mounted on a robotic arm. A stepper motor is fixedly mounted on the inner wall of one side of the mounting cover. A transmission disk is connected to the output shaft of the stepper motor. The transmission disk is rotatably connected inside the mounting cover. A plurality of arc-shaped transmission holes are equally spaced on the transmission disk. A support ring is fixedly mounted inside the mounting cover. Multiple clamping components are installed at equal intervals on the support ring. Each clamping component includes a transmission rod and a clamping plate. The transmission rod is slidably connected to the support ring. One end of the transmission rod is provided with the clamping plate, and the other end is provided with a stop rod. The stop rod passes through a corresponding arc-shaped transmission hole and engages with the inner wall of the arc-shaped transmission hole. When the stepper motor drives the transmission disk to rotate, the arc-shaped transmission hole pushes the stop rod to move towards the center of the transmission disk, thereby causing the clamping plate to retract inward through the transmission rod to clamp the pipe.

[0007] In one possible design, the clamp is located outside the mounting cover for direct contact with and positioning of the fitting.

[0008] In one possible design, the stop bar is located inside the mounting cover and is in continuous contact with the inner wall of the arc-shaped transmission hole, enabling radial movement when the transmission disc rotates.

[0009] A parts welding processing equipment, used in the robotic arm positioning assembly as described above, includes a slip ring rotatably connected to a mounting cover, a mounting box fixedly mounted on one side of the slip ring, a displacement mechanism connected to one side of the mounting box, one side of the displacement mechanism extending into the mounting box and connected to the inner wall of one side of the mounting box, and another side of the displacement mechanism extending to the outside of the mounting box and connected to a welding mechanism.

[0010] In one possible design, the displacement mechanism includes a second drive motor fixedly mounted on the mounting box. The output shaft of the second drive motor extends into the mounting box and is connected to a transmission assembly. One side of the transmission assembly is connected to an inner wall of one side of the mounting box. A support rod is connected to the transmission assembly. One end of the support rod extends to the outside of the mounting box and is connected to the welding mechanism. When the second drive motor is started, the transmission assembly drives the support rod to move, thereby positioning the welding mechanism at the joint between the pipe and the plate.

[0011] In one possible design, the transmission assembly includes a transmission screw fixedly mounted on the output shaft of a second drive motor. One end of the transmission screw is rotatably connected to the inner wall of one side of the mounting box. A movable plate is slidably connected inside the mounting box. A transmission nut is fixedly mounted on one side of the movable plate. The transmission screw passes through the movable plate and is threadedly connected to the transmission nut. The other end of the support rod is fixedly connected to one side of the movable plate. When the transmission screw rotates, it drives the movable plate to move linearly through threaded transmission, thereby adjusting the position of the welding mechanism.

[0012] In one possible design, the welding mechanism includes a fixed box fixedly mounted at one end of a support rod, a welding torch slidably connected inside the fixed box, an electric push rod fixedly mounted on one side of the fixed box, the output shaft of the electric push rod extending into the fixed box and fixedly connected to one side of the welding torch, and when the electric push rod is activated, pushing the welding torch to move outward from the fixed box, so that the end of the welding torch is aligned with the joint between the pipe and the plate.

[0013] In one possible design, a first drive motor is fixedly mounted on the slip ring, a gear is fixedly mounted on the output shaft of the first drive motor, and a gear ring is fixedly sleeved on the mounting cover. The gear meshes with the gear ring. When the first drive motor starts, the drive gear rotates, and the meshing of the gear and the gear ring drives the slip ring to rotate around the mounting cover, thereby causing the welding mechanism to perform a circular motion to weld the entire joint.

[0014] In one possible design, the welding torch is electrically connected to a wire, and a through hole is provided on one side of the inner wall of the fixing box. One end of the wire extends through the through hole to the outside of the fixing box and is connected to an external welding machine to provide the power required for welding.

[0015] In this application, during use, the pipe fitting to be welded is first placed between multiple clamping plates. Then, a stepper motor is started to drive the transmission disk to rotate. The arc-shaped transmission hole on the transmission disk, through its transmission engagement with the stop rod, pushes the stop rod to move towards the center of the transmission disk. The stop rod, through the transmission rod, drives the clamping plates to retract inward, thereby clamping and positioning the pipe fitting. Next, the plate to be welded is joined with the pipe fitting. The second drive motor is started to drive the transmission screw to rotate. The transmission screw, through its thread engagement with the transmission nut, drives the moving plate to move within the mounting box. The moving plate, through the support rod, drives the welding mechanism to move until the welding torch reaches the joint position between the pipe fitting and the plate fitting. Subsequently, the electric push rod is started to push the welding torch to move outward from the fixed box, aligning the end of the welding torch with the joint. Finally, the first drive motor is started to drive the gear to rotate. The gear, through its meshing with the gear ring, drives the slip ring to move the mounting box and the welding torch in a circular motion, thereby performing comprehensive welding processing on the entire joint between the pipe fitting and the plate fitting.

[0016] Beneficial effects: In this utility model, the robotic arm positioning component can drive the transmission disk to rotate by starting the stepper motor through the positioning mechanism. At this time, under the transmission cooperation between the arc-shaped transmission hole on the transmission disk and the corresponding clamping component, the clamping component can be retracted inward. Thus, when the pipe to be welded is placed between multiple clamping components, the pipe can be positioned and clamped by multiple clamping components. In this utility model, the part welding processing equipment can, through a displacement mechanism, connect the pipe to be welded with the plate to be welded, and then start the second drive motor to drive the transmission component to move. When the transmission component moves, it can drive the support rod to move, thereby moving the welding mechanism to the position where the pipe and the plate are connected, thus facilitating the welding processing of the plate and the pipe. In this utility model, the welding processing equipment for parts, through the welding mechanism, can move the welding gun to the joint of the pipe and the plate, and then push the welding gun to the outside of the fixed box by activating the electric push rod, so as to align the welding gun with the joint of the plate and the pipe, thereby facilitating the welding processing of the plate and the pipe. This invention achieves automatic centering and precise clamping of pipe fittings through the cooperation of the transmission disc and clamping components, effectively improving positioning accuracy and efficiency. The integrated welding mechanism, driven by a motor and screw, can accurately deliver the welding torch to the weld seam, and is finely adjusted by an electric push rod to ensure the accuracy of the welding start position. Finally, through gear and ring transmission, the welding torch is driven to make stable circular motion around the pipe fitting, which can complete the circumferential weld seam with high quality without relying on the rotation of the robotic arm or workpiece. It has a high degree of integration and strong adaptability. Attached Figure Description

[0017] Figure 1 This is a first-view three-dimensional structural schematic diagram of a robotic arm positioning component and a parts welding and processing equipment proposed in this utility model. Figure 2 This is a second-view three-dimensional structural schematic diagram of a robotic arm positioning component and a parts welding and processing equipment proposed in this utility model. Figure 3 This is a three-dimensional cross-sectional schematic diagram of the mounting cover structure of a robotic arm positioning component proposed in this utility model. Figure 4 This is a first-view three-dimensional schematic diagram of the stepper motor, transmission disk and multiple clamping plate connection structure of a robotic arm positioning component proposed in this utility model. Figure 5 This is a second-view three-dimensional schematic diagram of the stepper motor, transmission disk and multiple clamping plate connection structure of a robotic arm positioning component proposed in this utility model. Figure 6 This is a three-dimensional cross-sectional view of the mounting box and fixing box of the parts welding processing equipment proposed in this utility model; Figure 7 This is a three-dimensional schematic diagram of the structure for welding pipe fittings onto a plate using this utility model.

[0018] In the diagram: 1. Robotic arm; 2. Mounting cover; 3. Stepper motor; 4. Transmission plate; 5. Arc-shaped transmission hole; 6. Support ring; 7. Transmission rod; 8. Stop bar; 9. Clamping plate; 10. Slip ring; 11. First drive motor; 12. Gear; 13. Gear ring; 14. Mounting box; 15. Second drive motor; 16. Transmission screw; 17. Moving plate; 18. Support rod; 19. Fixing box; 20. Electric push rod; 21. Welding torch. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] In one embodiment: Refer to Figure 1-5 A robotic arm positioning assembly includes a mounting cover 2 installed at the end of a robotic arm 1. A stepper motor 3 is fixed to one side of the interior of the mounting cover 2. The output shaft of the stepper motor 3 is connected to a circular transmission disk 4, which is rotatably connected within the mounting cover 2 via bearings. Multiple arc-shaped transmission holes 5 are evenly spaced along the circumference of the transmission disk 4. Inside the mounting cover 2, a support ring 6 is also fixedly installed, and multiple clamping components are similarly evenly spaced through the support ring 6.

[0021] like Figure 3-5 As shown, each clamping assembly consists of a drive rod 7, a stop rod 8, and a clamping plate 9. The drive rod 7 passes through and slides into the support ring 6. The end of the drive rod 7 located outside the mounting cover 2 is fixedly fitted with the clamping plate 9 for contacting the pipe fitting, while the end of the drive rod 7 located inside the mounting cover 2 is fixedly fitted with the stop rod 8. The stop rod 8 passes through a corresponding arc-shaped transmission hole 5 on the transmission disc 4, allowing the end of the stop rod 8 to contact the inner wall of the arc-shaped transmission hole 5 and form a transmission engagement.

[0022] When stepper motor 3 starts, it drives transmission disk 4 to rotate. Since the stop lever 8 is constrained by support ring 6 and can only move radially, the rotation of transmission disk 4 forces the inner wall of arc-shaped transmission hole 5 to push the stop lever 8, causing all stop levers 8 to move synchronously towards the center of transmission disk 4. This movement is transmitted to the external clamping plate 9 through transmission rod 7, causing all clamping plates 9 to contract synchronously towards the center, thereby automatically centering and firmly clamping the pipe inserted from the front of the robotic arm.

[0023] This application can be used in the field of welding equipment technology, or in other fields applicable to this application.

[0024] In another embodiment: Reference Figure 1 , Figure 2 and Figure 6Based on the above embodiments, an improvement is made to a parts welding processing device, which is applied in the field of welding equipment technology. A slip ring 10, which can rotate around the outside of the mounting cover 2, is fitted onto the slip ring 10. A first drive motor 11 is fixedly mounted on the slip ring 10, and a gear 12 is mounted on the output shaft of the first drive motor 11. Correspondingly, a gear ring 13 is fixedly fitted on the outer wall of the mounting cover 2, and the gear 12 meshes with the gear ring 13. When the first drive motor 11 starts, it drives the gear 12 to rotate. Due to the meshing relationship between the gear 12 and the fixed gear ring 13, the gear 12 drives the first drive motor 11 itself and the entire slip ring 10 to perform a circular motion around the mounting cover 2.

[0025] like Figure 6 As shown, a mounting box 14 is fixedly connected to one side of the slip ring 10. A second drive motor 15 is fixedly mounted on the mounting box 14, and the output shaft of the second drive motor 15 extends into the mounting box 14 and is connected to one end of a transmission screw 16. The other end of the transmission screw 16 is connected to the inner wall of the mounting box 14 through a bearing. One end of a support rod 18 extends through the wall of the mounting box 14 and into its interior. Inside the mounting box 14, the end of the support rod 18 is fixedly connected to one side of a movable plate 17. A transmission nut is fixedly mounted on the movable plate 17, and the transmission screw 16 passes through the movable plate 17 and forms a threaded transmission engagement with the transmission nut. By starting the second drive motor 15 to rotate forward or reverse, the transmission screw 16 can be driven to rotate, thereby driving the movable plate 17 and the support rod 18 fixed thereto to move stably in a reciprocating linear motion along the inner wall of the mounting box 14.

[0026] like Figure 6 As shown, a fixed housing 19 is fixedly mounted to one end of the support rod 18 outside the mounting box 14. A welding torch 21 is placed inside the fixed housing 19, with the torch body slidingly fitted against the inner wall of the fixed housing 19. The welding torch 21's wire is led out from a through hole in the side wall of the fixed housing 19 and connected to an external welding power source. An electric push rod 20 is fixedly mounted on one side of the fixed housing 19, its push rod extending into the fixed housing 19 and fixedly connected to the torch body of the welding torch 21. Activating the electric push rod 20 pushes the welding torch 21 to slide within the fixed housing 19, causing its welding nozzle to extend or retract into the fixed housing 19, thereby precisely adjusting the relative distance between the welding torch tip and the weld seam.

[0027] During welding, the robotic arm 1 first moves the entire assembly holding the pipe fitting to a predetermined position, aligning the end of the pipe fitting with the plate to be welded. Then, the second drive motor 15 starts, pushing the support rod 18 and its welding torch 21 near the joint area between the pipe fitting and the plate through the transmission screw 16 and the moving plate 17. Next, the electric push rod 20 moves, precisely pushing the welding torch 21 to the weld initiation point. Finally, the first drive motor 11 starts, driving the slip ring 10 to move the entire mounting box 14, support rod 18, and welding torch 21 in a uniform circular motion around the pipe fitting, thus completing the welding operation of the entire circumferential weld in one continuous motion. Throughout the process, the pipe fitting is stably clamped and positioned, and the movement trajectory of the welding torch 21 is precisely controllable, ensuring welding quality.

[0028] However, as is well known to those skilled in the art, the working principles and wiring methods of the robotic arm 1, stepper motor 3, first drive motor 11, second drive motor 15, electric push rod 20 and welding torch 21 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A robotic arm positioning assembly, comprising a mounting cover (2) mounted on a robotic arm (1), characterized in that, A stepper motor (3) is fixedly installed on one side of the inner wall of the mounting cover (2). A transmission disk (4) is connected to the output shaft of the stepper motor (3). The transmission disk (4) is rotatably connected inside the mounting cover (2). Multiple arc-shaped transmission holes (5) are equally spaced on the transmission disk (4). A support ring (6) is fixedly installed inside the mounting cover (2). Multiple clamping components are installed at equal intervals on the support ring (6). Each clamping component includes a transmission rod (7) and a clamping plate (9). The transmission rod (7) is slidably connected to the support ring (6). One end of the transmission rod (7) is provided with the clamping plate (9), and the other end is provided with a stop rod (8). The stop rod (8) passes through the corresponding arc-shaped transmission hole (5) and engages with the inner wall of the arc-shaped transmission hole (5). When the stepper motor (3) drives the transmission disk (4) to rotate, the arc-shaped transmission hole (5) pushes the stop bar (8) to move toward the center of the transmission disk (4), thereby driving the clamping plate (9) to retract inward through the transmission rod (7) to clamp the pipe.

2. The robotic arm positioning assembly according to claim 1, characterized in that, The clamp (9) is located outside the mounting cover (2) and is used to directly contact and position the pipe fitting.

3. The robotic arm positioning assembly according to claim 1, characterized in that, The stop bar (8) is located inside the mounting cover (2) and is in continuous contact with the inner wall of the arc-shaped transmission hole (5), and moves radially when the transmission disc (4) rotates.

4. A parts welding processing device, used in the robotic arm positioning assembly as described in any one of claims 1 to 3, comprising a slip ring (10) rotatably connected to a mounting cover (2), characterized in that, A mounting box (14) is fixedly installed on one side of the slip ring (10). A displacement mechanism is connected to one side of the mounting box (14). One side of the displacement mechanism extends into the mounting box (14) and is connected to the inner wall of one side of the mounting box (14). Another side of the displacement mechanism extends to the outside of the mounting box (14) and is connected to a welding mechanism.

5. The parts welding processing equipment according to claim 4, characterized in that, The displacement mechanism includes a second drive motor (15) fixedly mounted on the mounting box (14). The output shaft of the second drive motor (15) extends into the mounting box (14) and is connected to a transmission assembly. One side of the transmission assembly is connected to the inner wall of one side of the mounting box (14). A support rod (18) is connected to the transmission assembly. One end of the support rod (18) extends to the outside of the mounting box (14) and is connected to the welding mechanism. When the second drive motor (15) is started, the support rod (18) is moved through the transmission assembly to position the welding mechanism at the joint between the pipe and the plate.

6. The parts welding processing equipment according to claim 5, characterized in that, The transmission assembly includes a transmission screw (16) fixedly mounted on the output shaft of the second drive motor (15). One end of the transmission screw (16) is rotatably connected to the inner wall of one side of the mounting box (14). A movable plate (17) is slidably connected inside the mounting box (14). A transmission nut is fixedly mounted on one side of the movable plate (17). The transmission screw (16) passes through the movable plate (17) and is threadedly connected to the transmission nut. The other end of the support rod (18) is fixedly connected to one side of the movable plate (17). When the transmission screw (16) rotates, it drives the movable plate (17) to move linearly through the threaded transmission, thereby adjusting the position of the welding mechanism.

7. The parts welding processing equipment according to claim 4, characterized in that, The welding mechanism includes a fixed box (19) fixedly installed at one end of a support rod (18). A welding torch (21) is slidably connected inside the fixed box (19). An electric push rod (20) is fixedly installed on one side of the fixed box (19). The output shaft of the electric push rod (20) extends into the fixed box (19) and is fixedly connected to one side of the welding torch (21). When the electric push rod (20) is started, it pushes the welding torch (21) to move outward from the fixed box (19), so that the end of the welding torch (21) is aligned with the joint between the pipe and the plate.

8. The parts welding processing equipment according to claim 4, characterized in that, A first drive motor (11) is fixedly installed on the slip ring (10). A gear (12) is fixedly installed on the output shaft of the first drive motor (11). A toothed ring (13) is fixedly sleeved on the mounting cover (2). The gear (12) meshes with the toothed ring (13). When the first drive motor (11) starts, the drive gear (12) rotates. Through the meshing of the gear (12) and the toothed ring (13), the slip ring (10) rotates around the mounting cover (2), thereby causing the welding mechanism to perform a circular motion to weld the entire joint.

9. The parts welding processing equipment according to claim 7, characterized in that, The welding torch (21) is electrically connected to a wire, and a through hole is provided on one side of the inner wall of the fixing box (19). One end of the wire extends through the through hole to the outside of the fixing box (19) and is connected to an external welding machine to provide the power required for welding.

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