A welding gun and welding wire automatic switching device
By designing an automatic switching device for welding torches and welding wires, and utilizing a servo motor and guide rail system to achieve automatic switching of welding torches and welding wires, the problem of welding wire confusion caused by manual switching by welders is solved, reducing the workload and labor intensity of welders.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGFANG BOILER GROUP OF DONGFANG ELECTRIC CORP
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-23
Smart Images
Figure CN224390160U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an automatic switching device for welding torch and welding wire, particularly an automatic switching device for welding small-diameter steel pipes in power plant boilers. Background Technology
[0002] The serpentine tubes of power plant boilers utilize a large number of small-diameter steel pipes, ranging in size from φ31.8 to 89 mm and wall thickness from δ3.5 to 22 mm, with materials including carbon steel, heat-resistant steel, and stainless steel. After welding and splicing, a single serpentine tube can reach a maximum length of nearly 40 m and may be composed of a combination of different materials. Due to the varying steam temperatures inside and flue gas corrosion outside the tube, materials such as SA-213T91, HR3C, and SUPER304H are used, necessitating the use of multiple grades of welding wire. Hot-wire TIG welding equipment is commonly used for pipe splicing. Since two or more grades of welding wire are typically used when splicing serpentine tubes, using two wire feeding systems (i.e., two welding torches) is advantageous, avoiding the need to change welding wire grades during welding. However, currently, welders need to manually switch welding torches (i.e., switch welding wires), which can easily lead to wire mixing and substandard weld joints due to mixed materials. In addition, if more than three types of welding wire are used, the welding wire spool must be changed repeatedly during the welding process (i.e., changing the welding wire type), which wastes time and increases the labor intensity of welders. Summary of the Invention
[0003] The purpose of this utility model is to address the above-mentioned shortcomings of the existing technology by providing an automatic switching device for welding torch and welding wire. It can realize the automatic switching of welding torch and welding wire without the need for welder intervention, completely solve the problem of welders mixing up welding wire, and reduce the workload and labor intensity of welders.
[0004] To achieve the above objectives, this utility model provides an automatic switching device for welding torch and welding wire, comprising a portal frame; characterized in that: an X-axis lead screw is mounted on the crossbeam of the portal frame via bearings at both ends, and a movable slide plate is slidably mounted on the crossbeam; the movable slide plate is fixedly connected to a lower nut that cooperates with the X-axis lead screw, and one end of the X-axis lead screw is connected to an X-axis servo motor; an upper slide plate is mounted on the movable slide plate via two Y-axis guide rail pairs, and a Y-axis lead screw is mounted on the movable slide plate; an upper nut that cooperates with the Y-axis lead screw is fixedly connected to the upper slide plate, and one end of the Y-axis lead screw is connected to a Y-axis servo motor; the upper slide plate is fixedly equipped with three or more sets of mounting brackets and anti-rotation blocks; each mounting bracket is equipped with a longitudinal lead screw via bearings; the upper end of each longitudinal lead screw is connected to a longitudinal servo motor, and the lower end of each longitudinal lead screw is connected to a nut sleeve; the anti-rotation block is placed in the longitudinal groove of the corresponding nut sleeve; the lower end of each nut sleeve is connected to an argon arc welding torch and a wire feeding tube, and each wire feeding tube contains welding wire of a different type.
[0005] When in use, the three servo motors are controlled by the host computer, which can automatically call the corresponding welding gun, and at the same time realize the arbitrary adjustment of the welding gun position and automatically select the matching welding wire. It can realize the automatic switching of welding gun and welding wire without the need for welder intervention, completely solve the problem of welders confusing welding wire, and reduce the workload and labor intensity of welders.
[0006] As a further improvement of this utility model, the lower end of each nut sleeve is provided with a wire feeding tube via a pipe clamp; this facilitates the fixing of the wire feeding tube.
[0007] In summary, this utility model can realize automatic switching of welding torch and welding wire without the need for welder intervention, completely solve the problem of welders mixing up welding wire, and reduce the workload and labor intensity of welders. Attached Figure Description
[0008] Figure 1 This is a simplified structural diagram of an embodiment of the present utility model.
[0009] Figure 2 for Figure 1 The left view.
[0010] Figure 3 for Figure 1 Partial top view Detailed Implementation
[0011] The present invention will be further described below with reference to the accompanying drawings.
[0012] like Figures 1 to 3 As shown, an automatic switching device for welding torch and welding wire in this embodiment includes a portal frame 1; an X-axis lead screw 3 and a sliding plate 4 slidably mounted on the crossbeam 2 of the portal frame 1 are provided through bearings at both ends; the sliding plate 4 is fixedly connected to a lower nut 5 that cooperates with the X-axis lead screw 3; one end of the X-axis lead screw 3 is connected to an X-axis servo motor 6; an upper plate 8 is provided on the sliding plate 4 through two Y-axis guide rail pairs 7; a Y-axis lead screw 9 is provided on the sliding plate 4; and an upper nut (not shown) that cooperates with the Y-axis lead screw 9 is fixedly connected to the upper plate 8. One end of the Y-axis lead screw 9 is connected to the Y-axis servo motor 10; the upper slide plate 8 is fixed with three sets of mounting brackets 11 and anti-rotation blocks 12. Each mounting bracket 11 is equipped with a longitudinal lead screw 13 through bearings. The upper end of each longitudinal lead screw 13 is connected to a longitudinal servo motor 14, and the lower end of each longitudinal lead screw 13 is connected to a nut sleeve 15. The anti-rotation block 12 is placed in the longitudinal groove of the corresponding nut sleeve 15. The lower end of each nut sleeve 15 is connected to an argon arc welding gun 16 and is equipped with a wire feeding tube 18 (only one is shown) through a pipe clamp 17. Each wire feeding tube 18 is equipped with welding wire, and the welding wire in each wire feeding tube 18 is of a different type.
[0013] When in use, the X-axis servo motor 6, Y-axis servo motor 10 and longitudinal servo motor 14 are controlled by the host computer, which can automatically call the corresponding welding gun 16. At the same time, the position of the welding gun can be adjusted arbitrarily, and the matching welding wire can be automatically selected. The welding gun and welding wire can be automatically switched without the need for welder intervention, which completely solves the problem of welders confusing welding wires and reduces the workload and labor intensity of welders.
[0014] The above embodiments have been used to illustrate that the number of mounting brackets 11, anti-rotation blocks 12, and argon arc welding torches 16 can be increased; however, it should be understood that the above embodiments are only for illustrative purposes and are not intended to limit the present invention to the scope of the described embodiments.
Claims
1. A welding gun and welding wire automatic switching device, comprising a door-shaped support; characterized in that: The crossbeam of the portal frame is equipped with an X-axis lead screw via bearings at both ends and a sliding plate slidably mounted on the crossbeam. The sliding plate is fixedly connected to a lower nut that mates with the X-axis lead screw, and one end of the X-axis lead screw is connected to an X-axis servo motor. An upper sliding plate is mounted on the sliding plate via two Y-axis guide rail pairs. The sliding plate is equipped with a Y-axis lead screw, and the upper sliding plate is fixedly connected to an upper nut that mates with the Y-axis lead screw. One end of the Y-axis lead screw is connected to a Y-axis servo motor. The upper sliding plate is fixedly equipped with three or more sets of mounting brackets and anti-rotation blocks. Each mounting bracket is equipped with a longitudinal lead screw via bearings. The upper end of each longitudinal lead screw is connected to a longitudinal servo motor, and the lower end of each longitudinal lead screw is connected to a nut sleeve. The anti-rotation block is placed in the longitudinal groove of the corresponding nut sleeve. The lower end of each nut sleeve is connected to an argon arc welding gun and a wire feeding tube, and each wire feeding tube contains welding wire.
2. The automatic switching device for welding torch and welding wire as described in claim 1, characterized in that: The lower end of each nut sleeve is equipped with a wire feeding tube via a pipe clamp.