A welding torch tip structure and a welding torch

Abstract

The utility model discloses a welding torch head structure, including the gun body, telescopic gas nozzle and oxygen nozzle, the gas nozzle is connected with the gun body end hinged seat through the damping hinged connection, and is provided with the adjusting handle of drive gas nozzle swing up and down. The gas nozzle is connected through multistage telescopic sleeve between the hinged seat, and this sleeve contains one -level fixed sleeve, two -level movable sleeve and three -level movable sleeve, realizes the accurate telescopic of gas nozzle and locking, adjusting handle and gas nozzle parallelly arranged, through the linkage adjustment of driving link, the up and down angle of gas nozzle is adjusted, makes welding flame can be fully mixed with oxygen under 30 to 60 angle of inclusion, ensures that combustion is full, reduces carbon deposition. Further, the welding torch of the utility model still includes the control switch of being located on the gun handle and is used for adjusting the swing component of gun handle left and right swing angle, effectively reduces the operator fatigue in the welding operation and improves the working stability.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment, specifically to a welding torch head structure and a welding torch. Background Technology

[0002] After the steel structure is welded and formed, if there are defects in the weld, it is usually necessary to repair the defective area by welding. When the repair area is located in the gap between the components, traditional welding torches often have limited length and angle adjustment. It is necessary to select a slender torch head and continuously adjust the angle of the torch head during the operation to adapt to the welding requirements of the narrow space.

[0003] In steel plate splicing and welding operations, workpieces are generally pre-assembled and positioned on the ground before welding. Because welding may be interrupted, the welding torch tip is easily damaged by impacts when placed haphazardly. Simultaneously, welders need to squat for extended periods and hold the welding torch suspended in the air for long periods, causing excessive fatigue to their hands, shoulders, and back. Furthermore, because the welding of thin plates requires precise control of the welding torch's flame angle, traditionally, workers had to manually adjust the flame angle based on their experience to prevent the steel plate from being punctured, making it difficult to guarantee welding quality.

[0004] Therefore, there is an urgent need to design a welding torch head structure and welding torch to meet the usage requirements of current actual welding operations. Utility Model Content

[0005] The purpose of this utility model is to provide a welding torch head structure, which enables the gas nozzle to extend and retract and adjust its angle in a confined working space; at the same time, it can also reduce the fatigue of welding workers' hands when they maintain a certain grip posture for a long time.

[0006] The technical solution adopted by this utility model to solve the above problems is: a welding torch head structure, including a torch body, a gas nozzle and an oxygen nozzle, wherein the gas nozzle is retractable and is damped and hinged to the end of the torch body through a hinge seat, and an adjustment handle for driving the gas nozzle to swing up and down is provided on the hinge seat.

[0007] Preferably, the gas nozzle and the hinge seat are connected by a telescopic sleeve. The telescopic sleeve includes a first-stage fixed sleeve, a second-stage movable sleeve, and a third-stage movable sleeve that fit together from the outside to the inside. The first-stage fixed sleeve is fixedly mounted on the hinge seat. The second-stage movable sleeve slides through the first-stage fixed sleeve and is fixed in position by fasteners. The third-stage movable sleeve slides through the second-stage movable sleeve and is also fixed in position by fasteners. The gas nozzle is fixedly mounted at the end of the third-stage movable sleeve.

[0008] Preferably, the adjusting handle is arranged parallel to the telescopic sleeve and the gas nozzle.

[0009] Preferably, one end of the adjusting handle is fixedly connected to the hinge seat, and the other end is rotatably provided with a drive rod.

[0010] Preferably, the oxygen nozzle is obliquely fixed above the gas nozzle via a connector, and the oxygen nozzle and the gas nozzle form an angle of 30°-60°.

[0011] A welding torch includes the aforementioned welding torch head structure, a torch handle, and a control switch disposed on the torch handle. The torch is characterized in that it further includes a swing assembly for adjusting the left and right swing angle of the torch handle. The swing assembly includes a base, two sets of clamps are detachably connected to the base, a swing seat is damped and rotatably connected between the two sets of clamps, an end cap is fixedly connected to the upper end of the swing seat, and the torch handle is fixedly disposed in a groove between the swing seat and the end cap.

[0012] Preferably, each of the two sets of clamping blocks is provided with a slider that is adapted to slide connection with the base. The slider has a horizontal internal thread hole. The two sets of sliders are connected by a screw. The external threads at both ends of the screw have opposite directions and are respectively connected to and adapted to one of the sets of sliders. The end of the screw is provided with a drive motor to drive the two sets of clamping blocks to separate or move closer.

[0013] Compared with the prior art, this utility model has the following advantages and effects:

[0014] This invention employs a multi-stage telescopic sleeve structure and a damping hinge method, enabling precise telescopic extension and vertical angle adjustment of the gas nozzle in confined spaces. This effectively solves the problem of limited adjustment of traditional welding torch heads in narrow working environments. Simultaneously, the oxygen nozzle is fixed at an angle of 30°-60° to the gas nozzle, ensuring thorough mixing of gas and oxygen in the initial injection stage. This guarantees complete fuel combustion, significantly reducing carbon deposition and slag formation, and improving weld fusion quality. Furthermore, this invention adds a swing component to the overall welding torch structure for adjusting the left-right swing angle of the torch handle. This allows for handle angle control, reducing fatigue caused by prolonged hand gripping during long-term work and effectively preventing equipment damage due to improper handle operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the welding torch head structure in Embodiment 1 of this utility model.

[0016] Figure 2 This is a cross-sectional view of the welding torch head structure of Embodiment 1 of this utility model.

[0017] Figure 3 This is a schematic diagram of the welding torch in Embodiment 2 of this utility model.

[0018] Figure 4 This is a cross-sectional view of the welding torch in Embodiment 2 of this utility model.

[0019] Attached Figures: 11. Gun Body, 12. Gas Nozzle, 13. Oxygen Nozzle, 14. Hinge Seat, 15. Adjusting Handle, 21. Telescopic Sleeve, 22. First-Stage Fixed Sleeve, 23. Second-Stage Movable Sleeve, 24. Third-Stage Movable Sleeve, 25. Fastener, 26. Gas Hose, 27. Drive Rod, 28. Connector, 31. Gun Handle, 32. Control Switch, 33. Swing Assembly, 34. Base, 35. Clamp, 36. Swing Seat, 37. End Cap, 38. Groove, 39. Bolt, 41. Slider, 42. Threaded Hole, 43. Screw, 44. External Thread, 45. Drive Motor. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0021] Example 1:

[0022] See Figure 1 and Figure 2 In this embodiment, a welding torch head structure is involved, which is specifically used for repair welding operations and thin plate welding in confined spaces. Specifically, it includes: a torch body 11, a gas nozzle 12 and an oxygen nozzle 13. The gas nozzle 12 is telescopic and is damped and hinged to the end of the torch body 11 through a hinge seat 14. An adjustment handle 15 is provided on the hinge seat 14 for driving the gas nozzle 12 to swing up and down.

[0023] Specifically, in this embodiment, the gas nozzle 12 is retractable and can be locked in place. The adjusting handle 15 can drive the gas nozzle 12 to swing up and down. After inspecting the defective parts of the weld seam of the steel component, repair welding is required. When the defective part is in a narrow area, such as a small connector 28 located between two sets of large workpieces, the welder can adjust the length and angle of the gas nozzle 12 according to the depth and orientation of the repair welding position (the small connector 28 relative to the large workpieces on both sides). In this embodiment, the hinge seat 14 and the gun body 11 are connected by a damping hinge, so the gas nozzle 12 can self-lock when the angle changes. This allows the welder to change the angle of the gas nozzle 12 to swing up and down by adjusting the handle 15 without frequently changing the grip of the welding gun, so that the welder can maintain a comfortable grip and insert the gun head (gas nozzle 12 and oxygen nozzle 13) into the repair welding area in a narrow space, meeting the actual operation requirements of repair welding.

[0024] In this embodiment, the gas nozzle 12 achieves its telescopic function through a telescopic sleeve 21. Specifically, the gas nozzle 12 is connected to the hinge seat 14 via the telescopic sleeve 21. The telescopic sleeve 21 can be designed with multiple interlocking sleeves according to the required telescopic length of the gas nozzle 12. In this embodiment, the telescopic sleeve 21 is a three-stage sleeve, including a first-stage fixed sleeve 22, a second-stage movable sleeve 23, and a third-stage movable sleeve 24 that interlock from the outside in. The first-stage fixed sleeve 22 is fixedly mounted on the hinge seat 14. The second-stage movable sleeve 23 slides through the first-stage fixed sleeve 22 and is fixed in position by fasteners 25. The third-stage movable sleeve 24 slides through the second-stage movable sleeve 23 and is fixed in position by fasteners 25. The gas nozzle 12 is fixedly mounted at the end of the third-stage movable sleeve 24. The second-stage movable sleeve 23 can telescopically extend and retract relative to the first-stage fixed sleeve 22, and the third-stage movable sleeve 24 can telescopically extend and retract relative to the second-stage movable sleeve 23, and both can be fixed in position by fasteners 25 (bolts 39, etc.). In addition, in this embodiment, the gas nozzle 12 is connected to the gas hose 26. The gas nozzle 12 is fixedly installed at the movable end of the telescopic sleeve 21 (the end of the three-stage movable sleeve 24 in this embodiment). The gas hose 26 is inserted into the telescopic sleeve 21, and the end of the gas hose 26 always moves with the gas nozzle 12 (movable end).

[0025] The adjusting handle 15 is arranged parallel to the telescopic sleeve 21 and the gas nozzle 12, so that even when the welding nozzle is hidden in a narrow space or other area, the welder can still roughly judge the swing angle of the nozzle by the angle of the adjusting handle 15 relative to the nozzle body 11. One end of the adjusting handle 15 is fixedly connected to the hinge seat 14, and the other end is rotatably equipped with a drive rod 27. During adjustment, by moving the drive rod 27, the adjusting handle 15 swings along the hinge part of the hinge seat 14.

[0026] The oxygen nozzle 13 is obliquely fixed above the gas nozzle 12 via the connector 28, with an angle of 30°-60° between the oxygen nozzle 13 and the gas nozzle 12. This allows for more complete combustion of the gas in full contact with oxygen, ensuring that the carbon in the gas is completely oxidized to carbon dioxide during combustion. This effectively reduces carbon deposition caused by incomplete combustion. Carbon deposition often forms weld slag, affecting the fusion quality of the weld and thus reducing the overall performance of the welded area.

[0027] Example 2:

[0028] See Figure 3 and Figure 4Based on Embodiment 1, this embodiment further discloses a welding torch, including the above-mentioned welding torch head structure, torch handle 31, and control switch 32 disposed on torch handle 31. At the same time, a swing component 33 for adjusting the left and right swing angle of torch handle 31 is added, thereby enhancing the overall operational flexibility of the welding torch and reducing the fatigue of operators who have to squat for a long time while maintaining the flame angle of the welding torch with their hands during welding of thin steel plates.

[0029] Specifically, the swing assembly 33 includes a base 34, on which two sets of clamping blocks 35 are detachably connected. A swing seat 36 is connected between the two sets of clamping blocks 35 with damping rotation. An end cap 37 is fixedly connected to the upper end of the swing seat 36. The gun handle 31 is fixedly disposed in a groove 38 between the swing seat 36 and the end cap 37. The end cap 37 is fixedly connected to the upper end of the swing seat 36 by bolts 39. During installation, the end cap 37 needs to be removed, the gun handle 31 needs to be placed in the groove 38 at the upper end of the swing seat 36, and finally the end cap 37 needs to be installed back on the upper end of the swing seat 36 to achieve the installation and fixation of the gun handle 31.

[0030] Specifically, in this embodiment, the welder can place the base 34 on the upper surface of the thin steel plate, then move the base 34 horizontally, and adjust the flame angle of the welding torch using the swing seat 36 and the adjusting handle 15. This eliminates the need to hold the welding torch for extended periods, effectively reducing the workload of welding. Furthermore, when welding is interrupted, the torch can be lifted directly using the adjusting handle 15, preventing damage caused by accidental placement.

[0031] Below each set of clamping blocks 35, there is a slider 41 that is slidably connected to the base 34. The slider 41 has a horizontal internal thread hole 42. The two sets of sliders 41 are connected by a screw 43. The external threads 44 at both ends of the screw 43 have opposite directions of rotation and are respectively connected to and adapted to one set of sliders 41. The end of the screw 43 is provided with a drive motor 45 for driving the two sets of clamping blocks 35 to separate or move closer. The drive motor 45 can fix the swing seat 36 between the two sets of clamping blocks 35. At the same time, by adjusting the clamping force between the clamping blocks 35 and the swing seat 36, the damping of the swing seat 36 when swinging left and right can be changed, and the position of the swing seat 36 after swinging can be fixed.

[0032] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A welding torch head structure, comprising a torch body, a gas nozzle, and an oxygen nozzle, characterized in that: The gas nozzle is retractable and is damped and hinged to the end of the gun body via a hinge seat. The hinge seat is equipped with an adjustment handle for driving the gas nozzle to swing up and down.

2. The welding torch head structure according to claim 1, characterized in that: The gas nozzle and the hinge seat are connected by a telescopic sleeve. The telescopic sleeve includes a first-stage fixed sleeve, a second-stage movable sleeve, and a third-stage movable sleeve that fit together from the outside to the inside. The first-stage fixed sleeve is fixedly mounted on the hinge seat. The second-stage movable sleeve slides through the first-stage fixed sleeve and is fixed in position by fasteners. The third-stage movable sleeve slides through the second-stage movable sleeve and is also fixed in position by fasteners. The gas nozzle is fixedly mounted at the end of the third-stage movable sleeve.

3. The welding torch head structure according to claim 1, characterized in that: The adjusting handle is arranged parallel to the telescopic sleeve and the gas nozzle.

4. The welding torch head structure according to claim 1, characterized in that: One end of the adjustment handle is fixedly connected to the hinge seat, and the other end is rotatably equipped with a drive rod.

5. The welding torch head structure according to claim 1, characterized in that: The oxygen nozzle is obliquely fixed above the gas nozzle by a connector, and the oxygen nozzle and the gas nozzle form an angle of 30°-60°.

6. A welding torch, comprising a torch head structure as described in any one of claims 1-5, a torch handle, and a control switch disposed on the torch handle, characterized in that: It also includes a swing assembly for adjusting the left and right swing angle of the gun handle. The swing assembly includes a base, on which two sets of clamps are detachably connected. A swing seat is connected between the two sets of clamps with damping rotation. An end cap is fixedly connected to the upper end of the swing seat. The gun handle is fixedly set in the groove between the swing seat and the end cap.

7. The welding torch according to claim 6, characterized in that: Both sets of clamping blocks are equipped with sliders that are adapted to slide connection with the base. The sliders have horizontal internal thread holes. The two sets of sliders are connected by a screw. The external threads at both ends of the screw have opposite directions and are adapted to connect with one of the sliders respectively. The screw end is equipped with a drive motor to drive the two sets of clamping blocks to separate or move closer.

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