Portable handheld welding machine auxiliary device

Abstract

The utility model discloses a portable handheld welding machine auxiliary device which comprises a frame, two sets of moving seats are connected in the frame in a sliding mode, fixing plates are fixedly connected to the upper portions of the two sets of moving seats, a plurality of sets of sliding grooves are formed in the circumference of the outer wall of each fixing plate, and a device frame is installed at the telescopic end of an electric telescopic rod. A driving wheel is rotationally connected into the device frame, a driving motor is installed on the outer wall of the device frame, an output shaft is coaxially and fixedly connected with the driving wheel, and a driving mechanism for driving the multiple moving plates to slide is installed on the outer wall of the fixed plate. Through the internal and external cooperative clamping structure of the driving wheel and the rolling wheel, a round pipe can continuously rotate at a constant speed in the welding process, an operator can complete welding of a whole circle of weld joints at a time without repeated disassembly and adjustment, the problem of repeated arcing caused by welding interruption is avoided, welding defects such as incomplete fusion and air holes are effectively prevented, and the welding efficiency is improved. And the consistency and the reliability of a welding joint are improved.

Description

Technical Field

[0001] This utility model relates to the field of welding auxiliary device technology, and in particular to a portable handheld welding machine auxiliary device. Background Technology

[0002] The biggest advantages of handheld welding machines are their simple structure, portability, ease of use, flexible welding, and strong welding penetration, making them capable of welding operations at various complex angles.

[0003] Chinese utility model patent CN222643549U discloses an auxiliary device for a handheld welding machine. This device, through the cooperation of a fixed plate, clamping block, worm gear, worm, support rod, and bracket, achieves the effect of fixing round pipes of different sizes, improving the quality of subsequent welding. However, this device has certain drawbacks in practical use. For example, when welding round pipes, the weld seam is mostly at the outer diameter of the pipe end, requiring 360-degree welding. After fixing two sets of round pipes, the device needs to release the fixing and re-clamp and fix them. Frequent interruptions to the welding process can easily create repeated arc starting points, potentially leading to defects such as incomplete fusion and porosity, reducing welding quality. Therefore, this paper proposes a portable handheld welding machine auxiliary device to address these problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the internal and external coordinating clamping structure of the drive wheel and rollers allows operators to complete the welding of the entire circumference of the weld seam in one go without repeated disassembly and adjustment. This avoids the problem of repeated arc ignition caused by welding interruption and effectively prevents welding defects such as incomplete fusion and porosity.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: The package includes a frame, within which two sets of movable seats are slidably connected. A fixed plate is fixedly connected above each of the two sets of movable seats. Multiple sets of sliding grooves are formed on the outer circumference of the fixed plate, and sliding rods are fixedly connected within each groove. A movable plate is movably connected to the outer wall of each sliding rod, and a roller is fixedly connected to the end of each movable plate. A limit plate is fixedly connected within the frame, and an electric telescopic rod is fixedly connected to the lower end of the limit plate. A device frame is installed at the telescopic end of the electric telescopic rod, and a drive wheel is rotatably connected inside it. A drive motor is installed on the outer wall of the device frame, and its output shaft is coaxially fixedly connected to the drive wheel. A drive mechanism for driving the multiple sets of movable plates to slide is installed on the outer wall of the fixed plate.

[0008] Preferably, the driving mechanism includes a threaded rod rotatably connected to the axis of the fixed plate, a slider threadedly connected to the threaded section of the threaded rod, and multiple sets of connecting plates rotatably connected to the outer wall of the slider, wherein the number of the multiple sets of connecting plates is the same as the number of moving plates, and each set of connecting plates is rotatably connected to its adjacent moving plate.

[0009] Preferably, a connecting rod is fixedly connected to the outer wall of the fixing plate, the slider is slidably connected to the outer wall of the connecting rod, and a limit block is fixedly connected to the end of the threaded rod, with a radius larger than the radius of the threaded rod.

[0010] Preferably, a double-threaded rod is rotatably connected within the frame, and both sets of movable seats are threadedly connected to the threaded section of the double-threaded rod.

[0011] Preferably, a limiting rod is fixedly connected to the inner wall of the frame, both sets of movable seats are slidably connected to the outer wall of the limiting rod, and the limiting sleeve is sleeved on the outer wall of the limiting rod and rotatably connected to the outer wall of the double-threaded rod.

[0012] Preferably, a motor is fixedly connected to the side wall of the frame, and its output shaft is coaxially fixedly connected to the double-threaded rod. A second motor is fixedly connected to the outer wall of the fixing plate, and the output shaft of the second motor is coaxially fixedly connected to the threaded rod.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a folding and packing device for medical non-woven sheets, which has the following beneficial effects:

[0015] 1. This utility model uses an internal and external coordinating clamping structure of the drive wheel and roller to enable the round tube to rotate continuously and at a uniform speed during the welding process. Operators can complete the welding of the entire circumference in one go without repeated disassembly and adjustment, avoiding the problem of repeated arcing caused by welding interruption, effectively preventing the generation of welding defects such as incomplete fusion and porosity, and improving the consistency and reliability of the welded joint.

[0016] 2. This utility model uses a motor to drive a double-headed threaded rod to adjust the distance between the moving seats, and a motor to control the threaded rod to drive the rollers to move radially. This allows the device to quickly adapt to round pipes of different diameters and lengths. Compared with the concentricity deviation that is easily caused by manual adjustment of traditional clamps, this device achieves high-precision centering, making the weld formation more uniform and beautiful. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a portable handheld welding machine auxiliary device proposed in this utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the structure at the fixed plate in the middle.

[0019] Figure 3 for Figure 2 Structural diagram.

[0020] Figure 4 for Figure 3 Schematic diagram of the structure of the moving plate, slider and roller.

[0021] In the diagram: 1. Frame; 2. Double-ended threaded rod; 3. Slider; 4. Limiting rod; 5. Limiting sleeve; 6. Electric telescopic rod; 7. Drive wheel; 8. Limiting block; 9. Moving seat; 10. Motor 1; 11. Fixing plate; 12. Slide groove; 13. Slide rod; 14. Motor 2; 15. Moving plate; 16. Roller; 17. Threaded rod; 18. Connecting rod; 19. Connecting plate. Detailed Implementation

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] This utility model provides a technical solution:

[0024] Reference Figure 1-4 A portable handheld welding machine auxiliary device includes a frame 1, two sets of movable seats 9 are slidably connected inside the frame 1, and a fixed plate 11 is fixedly connected above each set of movable seats 9. Multiple sets of sliding grooves 12 are opened on the outer circumference of the fixed plate 11, and sliding rods 13 are fixedly connected in each of the sliding grooves 12. A movable plate 15 is movably connected to the outer wall of the sliding rod 13. A roller 16 is fixedly connected to the end of the movable plate 15. A limit sleeve 5 is fixedly connected inside the frame 1. An electric telescopic rod 6 is fixedly connected to the lower end of the limit sleeve 5. A device frame is installed at the telescopic end of the electric telescopic rod 6, and a drive wheel 7 is rotatably connected inside it. A drive motor is installed on the outer wall of the device frame, and the output shaft is coaxially fixedly connected to the drive wheel 7. A drive mechanism for driving the multiple sets of movable plates 15 to slide is installed on the outer wall of the fixed plate 11.

[0025] Furthermore, the drive wheel 7 and the roller 16 form a synchronous clamping of the inner and outer diameters of the round tube. The clamping force of the drive wheel 7 can be adjusted by the electric telescopic rod 6, so that the round tube can be continuously welded 360° during the welding process by the rotation of the drive wheel 7, without the need for repeated disassembly and adjustment.

[0026] The driving mechanism includes a threaded rod 17 rotatably connected to the axis of the fixed plate 11. A slider 3 is threadedly connected to the threaded section of the threaded rod 17. Multiple sets of connecting plates 19 are rotatably connected to the outer wall of the slider 3. The number of multiple sets of connecting plates 19 is the same as the number of moving plates 15. Each set of connecting plates 19 is rotatably connected to its adjacent moving plate 15.

[0027] Furthermore, the threaded drive of the threaded rod 17 and the slider 3, combined with the linkage of the connecting plate 19, synchronously controls the radial movement of multiple sets of moving plates 15 through a single drive source, ensuring that the clamping force of the roller 16 on the inner wall of the round tube is evenly distributed, avoiding local deformation, and at the same time quickly adapting to the fixing requirements of different pipe diameters.

[0028] A connecting rod 18 is fixedly connected to the outer wall of the fixed plate 11, and a slider 3 is slidably connected to the outer wall of the connecting rod 18. A limit block 8 is fixedly connected to the end of the threaded rod 17, and its radius is larger than that of the threaded rod 17.

[0029] Furthermore, the sliding engagement between the connecting rod 18 and the slider 3 forms an axial limiting structure to prevent the slider 3 from shifting circumferentially when the threaded rod 17 rotates, thus ensuring the synchronous motion accuracy of the multiple sets of rollers 16.

[0030] A double-threaded rod 2 is rotatably connected inside the frame 1. Two sets of movable seats 9 are threadedly connected to the threaded section of the double-threaded rod 2. The limiting sleeve 5 is sleeved on the outer wall of the limiting rod 4 and rotatably connected to the outer wall of the double-threaded rod 2.

[0031] Furthermore, the double-threaded rod 2 drives two sets of moving seats 9 to move synchronously in opposite directions via bidirectional threads, thereby achieving precise adjustment of the distance between the two fixed plates 11 and adapting to the welding requirements of round pipes of different lengths.

[0032] A limiting rod 4 is fixedly connected to the inner wall of frame 1. Two sets of movable seats 9 are slidably connected to the outer wall of the limiting rod 4. A motor 10 is fixedly connected to the side wall of frame 1, and its output shaft is coaxially fixedly connected to the double-headed threaded rod 2. A motor 2 14 is fixedly connected to the outer wall of the fixing plate 11, and the output shaft of motor 2 14 is coaxially fixedly connected to the threaded rod 17.

[0033] In practical use, the working principle of this utility model is as follows:

[0034] The operator first places the two sets of round tubes to be welded between the rollers 16 of the two side fixing plates 11. Then, the motor 10 is started, and the double-threaded rod 2 begins to rotate, driving the two sets of moving seats 9 to slide synchronously towards each other along the limiting rod 4, so that the distance between the two side fixing plates 11 matches the length of the round tubes. During this process, the rigid guiding effect of the limiting rod 4 ensures that the moving seats 9 always move in a straight line, avoiding the deviation of the round tube axis due to skewness.

[0035] Once the position of the circular tube is initially fixed, the operator starts motor 14, driving the threaded rod 17 to rotate. The threaded rod 17 drives the slider 3 to slide axially along the connecting rod 18. Through the linkage of the connecting plate 19, multiple sets of moving plates 15 are pushed to move radially outward synchronously along the sliding rod 13, so that the roller 16 is evenly pressed against the inner wall of the circular tube, thereby completing the inner wall clamping.

[0036] The operator then extends the electric telescopic rod 6, pushing the drive wheel 7 downwards until it makes tight contact with the outer wall of the circular tube. After the drive motor starts, the drive wheel 7 begins to rotate, causing the circular tube to rotate uniformly around its own axis through friction. During this process, the roller 16 and the drive wheel 7 form a coordinated clamping structure with inner and outer diameters, providing stable rotational driving force while reducing the rotational resistance of the circular tube through the rolling friction of the roller 16. The operator then uses a handheld welding machine to perform welding operations along the weld seam area of ​​the circular tube. The continuous rotation of the circular tube allows the weld seam to be completed 360° in one go, without needing to release the clamp and reposition it midway.

[0037] In summary, this device achieves rapid length adaptation through the cooperation of motor 10 and double-headed threaded rod 2, and achieves synchronous clamping of multiple rollers 16 through the linkage of motor 2 14 and threaded rod 17. Combined with the active rotation function of drive wheel 7, it solves the problem of repeated disassembly and adjustment required by traditional devices. The internal and external synergistic effect of rollers 16 and drive wheel 7 ensures that the round tube maintains high concentricity during continuous rotation welding, effectively eliminates repeated arc starting points, and improves the quality of welded joints.

[0038] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A portable handheld welding machine auxiliary device, comprising a frame (1), characterized in that, Two sets of movable seats (9) are slidably connected inside the frame (1). A fixed plate (11) is fixedly connected above each set of movable seats (9). Multiple sets of sliding grooves (12) are opened on the outer circumference of the fixed plate (11), and sliding rods (13) are fixedly connected inside each sliding groove (12). A movable plate (15) is movably connected to the outer wall of the sliding rod (13). A roller (16) is fixedly connected to the end of the movable plate (15). A limit sleeve plate (5) is fixedly connected inside the frame (1). An electric telescopic rod (6) is fixedly connected to the lower end of the limit sleeve plate (5). A device frame is installed at the telescopic end of the electric telescopic rod (6), and a drive wheel (7) is rotatably connected inside. A drive motor is installed on the outer wall of the device frame, and the output shaft is coaxially fixedly connected to the drive wheel (7). A drive mechanism for driving multiple sets of movable plates (15) to slide is installed on the outer wall of the fixed plate (11).

2. The portable handheld welding machine auxiliary device according to claim 1, characterized in that, The driving mechanism includes a threaded rod (17) rotatably connected to the axis of the fixed plate (11). A slider (3) is threadedly connected to the threaded section of the threaded rod (17). Multiple sets of connecting plates (19) are rotatably connected to the outer wall of the slider (3). The number of multiple sets of connecting plates (19) is the same as the number of moving plates (15). Each set of connecting plates (19) is rotatably connected to its adjacent moving plate (15).

3. The portable handheld welding machine auxiliary device according to claim 2, characterized in that, The outer wall of the fixed plate (11) is fixedly connected to the connecting rod (18), the slider (3) is slidably connected to the outer wall of the connecting rod (18), and the end of the threaded rod (17) is fixedly connected to the limit block (8), and the radius dimension is larger than the radius dimension of the threaded rod (17).

4. The portable handheld welding machine auxiliary device according to claim 3, characterized in that, The frame (1) is rotatably connected to a double-ended threaded rod (2), and the two sets of movable seats (9) are threadedly connected to the threaded section of the double-ended threaded rod (2).

5. The portable handheld welding machine auxiliary device according to claim 4, characterized in that, The inner wall of the frame (1) is fixedly connected to a limiting rod (4), and the two sets of movable seats (9) are slidably connected to the outer wall of the limiting rod (4). The limiting sleeve (5) is sleeved on the outer wall of the limiting rod (4) and is rotatably connected to the outer wall of the double-headed threaded rod (2).

6. The portable handheld welding machine auxiliary device according to claim 5, characterized in that, The frame (1) is fixedly connected to a motor (10) on its side wall, and its output shaft is fixedly connected to a double-headed threaded rod (2) on the same axis. The fixed plate (11) is fixedly connected to a motor (14) on its outer wall, and the output shaft of the motor (14) is fixedly connected to a threaded rod (17) on the same axis.

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