A welding nozzle for welding of medium thickness plates

Abstract

The application relates to a welding nozzle for plate welding, belonging to the technical field of welding nozzles, which comprises a welding nozzle, a connecting pipe, a double-head nozzle installed on the welding nozzle, two gas conveying pipes installed at one end of the double-head nozzle, and an angle adjusting structure installed on the welding nozzle. The welding nozzle for plate welding is used for adjusting the angle of the double-head nozzle by holding the arc-shaped handle and pushing the rack to slide, since the rack is engaged with the gear on the outer surface of the supporting column, the sliding of the rack drives the gear to rotate, thereby driving the supporting column to rotate, the rotation of the supporting column drives the double-head nozzle to rotate around the axis of the supporting column, thereby realizing the adjustment of the angle of the double-head nozzle, when the double-head nozzle is adjusted to the appropriate angle, the magnet in the fixing component is adsorbed on the connecting frame made of metal material, the rack is fixed at the current position, thereby making the double-head nozzle keep at the adjusted angle, and the gas welding gun provided with the double-pipe nozzle can be deeply inserted into a small gap to weld the plate.

Description

Technical Field

[0001] This utility model relates to the field of welding nozzle technology, and in particular to a welding nozzle for welding medium and thick plates. Background Technology

[0002] The welding nozzle is a key component of welding equipment, playing a crucial role in the welding process. In gas shielded welding, the welding nozzle ensures that the shielding gas evenly covers the weld pool, isolating it from air and preventing harmful gases such as oxygen and nitrogen from entering the weld pool. This avoids oxidation and nitriding of the weld metal, thus guaranteeing the quality and performance of the weld. For gas metal arc welding (GMAW), the welding nozzle guides the welding wire, ensuring it is accurately delivered to the welding position. It also helps stabilize the welding arc, ensuring the stability and consistency of the welding process. On one hand, the shielding gas carries away some heat as it flows through the nozzle, achieving cooling and heat dissipation. On the other hand, some welding nozzles with special heat dissipation structures can accelerate heat dissipation, preventing damage from overheating and maintaining the normal working condition of the welding torch, thus ensuring the continuity of the welding operation.

[0003] In the prior art, common welding nozzles are cylindrical in structure. When welding medium and thick plates, the opening may be too small, causing the welding nozzle to get stuck and preventing the welding torch from penetrating deeply, thus making welding impossible. Furthermore, the output of shielding gas requires adjustment of the welding nozzle orientation, which affects the welding process. Therefore, a welding nozzle for welding medium and thick plates is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a welding nozzle for welding medium and thick plates. It has the advantages of dual-pipe delivery of protective gas and adjustable angle. This solves the problems of common welding nozzles, which are cylindrical in structure and have small openings when welding medium and thick plates, which can cause the welding nozzle to get stuck, preventing the welding torch from penetrating and making welding impossible. Furthermore, the output of protective gas requires adjustment of the welding nozzle orientation, which affects the welding process.

[0005] In summary, this utility model provides the following technical solution: a welding nozzle for welding medium and thick plates, comprising a welding nozzle and a connecting pipe, a double-headed nozzle mounted on the welding nozzle, two gas supply pipes mounted on one end of the double-headed nozzle, and an angle adjustment structure mounted on the welding nozzle;

[0006] The angle adjustment structure includes a connecting sleeve mounted on the outer surface of the welding nozzle, a connecting frame fixedly mounted on the top and bottom of the connecting sleeve, two mounting sleeves mounted on the dual-head nozzle, mounting frames fixedly mounted on opposite sides of the two mounting sleeves, support columns rotatably mounted on the two connecting frames and used to support the rotation of the mounting frames, gears fixedly mounted on the outer surfaces of the two support columns, racks slidably mounted inside the two connecting frames and meshing with the outer surfaces of the gears, guide components mounted inside the two connecting frames and used to limit the sliding trajectory of the racks, and a control component mounted on the two racks.

[0007] The control assembly includes anti-detachment components installed on the left and right sides of the two racks respectively to limit the sliding range of the racks, fixing components installed on the two anti-detachment components respectively to connect and hold the connecting frame, and arched handles installed on the two anti-detachment components respectively.

[0008] By adopting the above-mentioned technical solution, this utility model achieves convenient and quick adjustment of the angle of the dual-head nozzle and improves the coverage area of ​​the protective gas, while also facilitating the installation and use of the angle adjustment structure.

[0009] Furthermore, the welding nozzle and the connecting pipe are fixedly connected, the dual-head nozzle is fixedly connected to two gas supply pipes respectively, and the dual-head nozzle is composed of two single-head nozzles.

[0010] The advantage of adopting the above-mentioned further solution is that it allows the shielding gas to cover the welding area more extensively.

[0011] Furthermore, both of the connecting frames have connecting holes inside, and both connecting frames are fitted with fixing screws that are threaded to the inner wall of the connecting holes. One end of each fixing screw passes through the connecting sleeve and abuts against the welding nozzle.

[0012] The advantage of adopting the above-mentioned further solution is that it facilitates the assembly and disassembly of the welding nozzle and the connecting sleeve.

[0013] Furthermore, both mounting frames have through holes inside, and both mounting frames are fitted with locking screws that are threaded to the inner wall of the through holes. One end of each locking screw passes through the mounting sleeve and abuts against the double-headed nozzle.

[0014] The advantage of adopting the above-mentioned further solution is that it facilitates the disassembly and assembly of the dual-head nozzle and the two mounting sleeves.

[0015] Furthermore, each of the two connecting frames has two circular grooves, and the two ends of the support column pass through the two circular grooves respectively. The two ends of the support column are fixedly connected to the front and rear side walls of the inner cavity of the mounting frame respectively.

[0016] The advantage of adopting the above-mentioned further solution is that it facilitates the rotation of the two mounting frames driven by the support column.

[0017] Furthermore, both of the guide components include a limiting strip and a limiting groove. The limiting strip is fixedly installed on the front side wall of the inner cavity of the connecting frame, and the limiting groove is opened on the front of the rack. The inner wall of the limiting groove is slidably connected to the outer surface of the limiting strip.

[0018] The beneficial effect of adopting the above-mentioned further solution is that it enables the rack to move only left and right on the outer surface of the limiting strip.

[0019] Furthermore, both of the anti-detachment components include two limiting plates, which are respectively fixedly installed on the left and right sides of the rack, and the arched handle is fixedly connected to the right limiting plate.

[0020] The advantage of adopting the above-mentioned further solution is that it makes it easier for staff to control the left and right movement of the rack through the arched handle.

[0021] Furthermore, both of the fixing components include magnets, and both of the limiting plates have mounting slots inside. The two magnets are respectively fixedly installed inside the mounting slots, and both of the connecting frames are metal frames.

[0022] The advantage of adopting the above-mentioned further solution is that it facilitates the use of magnets to attach the connecting frame, thereby fixing the position of the rack.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] The welding nozzle for welding medium-thick plates features an angle adjustment structure. Operators can grasp the arched handle and pull or push the rack to slide within the connecting frame. Because the rack meshes with gears on the outer surface of the support column, the rack's sliding motion causes the gears to rotate, which in turn rotates the support column. This rotation of the support column causes the dual-headed nozzle to rotate around its axis, thus adjusting the nozzle's angle. Once the dual-headed nozzle is adjusted to the appropriate angle, a magnet in the fixing component adheres to the metal connecting frame, securing the rack in its current position and maintaining the dual-headed nozzle at the adjusted angle. Furthermore, the gas welding torch equipped with this dual-nozzle design can penetrate small notches to weld medium-thick plates, enhancing the practicality of the welding nozzle for medium-thick plate welding. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This utility model Figure 1 Enlarged structural diagram of section A in the middle;

[0027] Figure 3 This is a perspective view of the structural connecting frame, rack, anti-detachment component, and fixing component of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Welding nozzle; 2. Connecting pipe; 3. Gas supply pipe; 4. Double-headed nozzle; 51. Connecting sleeve; 52. Connecting frame; 53. Mounting sleeve; 54. Mounting frame; 55. Support column; 56. Gear; 57. Rack; 58. Guide component; 59. Anti-detachment component; 60. Fixing component; 61. Arched handle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1 to 3 This embodiment describes a welding nozzle for welding medium-thick plates, comprising a welding nozzle 1 and a connecting pipe 2, a double-headed nozzle 4 mounted on the welding nozzle 1, two gas supply pipes 3 mounted on one end of the double-headed nozzle 4, and an angle adjustment structure mounted on the welding nozzle 1. The welding nozzle 1 and the connecting pipe 2 are fixedly connected, and the double-headed nozzle 4 is fixedly connected to the two gas supply pipes 3 respectively. The double-headed nozzle 4 is composed of two single-headed nozzles and equipped with two gas supply pipes 3, which enables the shielding gas to cover the welding area more extensively, effectively preventing air from entering the molten pool during welding, improving weld quality, and reducing defects such as porosity and cracks in the weld. It is especially suitable for medium-thick plate welding, a process that has high requirements for shielding gas.

[0032] Please see Figures 1 to 3 In this embodiment, the angle adjustment structure includes a connecting sleeve 51 mounted on the outer surface of the welding nozzle 1, connecting frames 52 fixedly mounted on the top and bottom of the connecting sleeve 51 respectively, two mounting sleeves 53 mounted on the double-headed nozzle 4, mounting frames 54 fixedly mounted on opposite sides of the two mounting sleeves 53 respectively, support columns 55 rotatably mounted on the two connecting frames 52 and used to support the rotation of the mounting frames 54, gears 56 fixedly mounted on the outer surfaces of the two support columns 55 respectively, racks 57 slidably mounted inside the two connecting frames 52 and meshing with the outer surfaces of the gears 56, guide components 58 mounted inside the two connecting frames 52 and used to limit the sliding trajectory of the racks 57, and control components mounted on the two racks 57.

[0033] Both connecting frames 52 have connecting holes inside, and both connecting frames 52 are equipped with fixing screws that are threaded to the inner wall of the connecting holes. One end of each fixing screw passes through the connecting sleeve 51 and abuts against the welding nozzle 1, so that the connecting sleeve 51 can be fixed to the outer surface of the welding nozzle 1 using the fixing screws.

[0034] In addition, both mounting frames 54 have through holes inside, and both mounting frames 54 are equipped with locking screws that are threaded to the inner wall of the through holes. One end of each locking screw passes through the mounting sleeve 53 and abuts against the double-headed nozzle 4, which makes it easy to fix the double-headed nozzle 4 and the two mounting sleeves 53 with the locking screws. The connection method is easy to disassemble and install, and the position of the connecting frame 52 and the mounting frame 54 can be finely adjusted according to actual needs, which further enhances the versatility and adaptability of the double-headed nozzle.

[0035] It should be noted that two circular slots are provided on both connecting frames 52, and the two ends of the support column 55 pass through the two circular slots respectively. The two ends of the support column 55 are fixedly connected to the front and rear side walls of the inner cavity of the mounting frame 54 respectively, so as to facilitate the rotation of the mounting frame 54 by using the support column 55.

[0036] Then, both guide components 58 include a limiting strip and a limiting groove. The limiting strip is fixedly installed on the front side wall of the inner cavity of the connecting frame 52, and the limiting groove is opened on the front of the rack 57. The inner wall of the limiting groove is slidably connected to the outer surface of the limiting strip, so as to restrict the rack 57 to only make linear movements on the outer surface of the limiting strip.

[0037] By employing the above technical solution, the movement of the rack 57 is controlled. Since the rack 57 meshes with the gear 56 on the outer surface of the support column 55, the sliding of the rack 57 drives the gear 56 to rotate, thereby causing the support column 55 to rotate. The two ends of the support column 55 are fixedly connected to the front and rear side walls of the inner cavity of the mounting frame 54. The mounting frame 54 is fixed to the mounting sleeve 53, which is mounted on the double-headed nozzle 4. Therefore, the rotation of the support column 55 drives the double-headed nozzle 4 to rotate around the axis of the support column 55, thereby achieving the adjustment of the angle of the double-headed nozzle 4.

[0038] Please see Figures 1 to 3 In this implementation, the control components include anti-detachment components 59 installed on the left and right sides of the two racks 57 respectively to limit the sliding range of the racks 57, fixing components 60 installed on the two anti-detachment components 59 respectively to connect and hold the connecting frame 52, and arched handles 61 installed on the two anti-detachment components 59 respectively. The racks 57 can be easily pulled or pushed through the arched handles 61 to adjust the angle of the dual-head nozzles. The operation is simple and convenient, reducing the labor intensity of the operator and improving work efficiency.

[0039] The two anti-detachment components 59 each include two limiting plates, which are fixedly installed on the left and right sides of the rack 57 respectively. The arched handle 61 is fixedly connected to the right limiting plate, so that the sliding range of the rack 57 can be limited by the limiting plate and prevent it from detaching from the connecting frame 52.

[0040] In addition, the two fixing components 60 include magnets, and the interior of the two limiting plates is provided with mounting grooves. The two magnets are fixedly installed inside the mounting grooves. The two connecting frames 52 are metal frames. The magnets in the fixing components 60 are attracted to the metal connecting frames 52 to fix the rack 57 in the current position.

[0041] By adopting the above technical solution, when the dual-head nozzle 4 is adjusted to a suitable angle, the magnet in the fixing component 60 is attracted to the metal connecting frame 52, fixing the rack 57 in the current position, thereby keeping the dual-head nozzle 4 at the adjusted angle, and the operator can pull or push the rack 57 to slide within the connecting frame 52 by holding the arched handle 61.

[0042] The working principle of the above embodiments is as follows:

[0043] In use, the operator holds the arched handle 61 and pulls or pushes the rack 57 to slide within the connecting frame 52. The limiting strip in the guide component 58 slides within the limiting groove, ensuring that the rack 57 moves along a predetermined trajectory. The two limiting plates of the anti-detachment component 59 restrict the sliding range of the rack 57, preventing it from dislodging from the connecting frame 52. Since the rack 57 meshes with the gear 56 on the outer surface of the support column 55, the sliding of the rack 57 drives the gear 56 to rotate, thereby causing the support column 55 to rotate. The two ends of the support column 55 are fixedly connected to the front and rear side walls of the inner cavity of the mounting frame 54. The mounting frame 54 is fixed on the mounting sleeve 53, and the mounting sleeve 53 is installed on the double-headed nozzle 4. Therefore, the rotation of the support column 55 will drive the double-headed nozzle 4 to rotate around the axis of the support column 55, thereby realizing the adjustment of the angle of the double-headed nozzle 4. When the double-headed nozzle 4 is adjusted to a suitable angle, the magnet in the fixing component 60 is attracted to the metal connecting frame 52, fixing the rack 57 in the current position, thereby keeping the double-headed nozzle 4 at the adjusted angle.

Claims

1. A welding nozzle for welding medium and thick plates, characterized in that: It includes a welding nozzle (1) and a connecting pipe (2), a double-headed nozzle (4) installed on the welding nozzle (1), two gas supply pipes (3) installed at one end of the double-headed nozzle (4), and an angle adjustment structure installed on the welding nozzle (1); The angle adjustment structure includes a connecting sleeve (51) installed on the outer surface of the welding nozzle (1), a connecting frame (52) fixedly installed on the top and bottom of the connecting sleeve (51) respectively, two mounting sleeves (53) installed on the double-headed nozzle (4), mounting frames (54) fixedly installed on opposite sides of the two mounting sleeves (53) respectively, support columns (55) rotatably installed on the two connecting frames (52) and used to support the rotation of the mounting frames (54), gears (56) fixedly installed on the outer surfaces of the two support columns (55) respectively, racks (57) slidably installed inside the two connecting frames (52) and meshing with the outer surfaces of the gears (56) respectively, guide components (58) installed inside the two connecting frames (52) and used to limit the sliding trajectory of the racks (57) respectively, and control components installed on the two racks (57); The control assembly includes anti-detachment components (59) installed on the left and right sides of the two racks (57) respectively and used to limit the sliding range of the racks (57), fixing components (60) installed on the two anti-detachment components (59) respectively and used to connect and hold the connecting frame (52), and arched handles (61) installed on the two anti-detachment components (59).

2. The welding nozzle for welding medium and thick plates according to claim 1, characterized in that: The welding nozzle (1) and the connecting pipe (2) are fixedly connected. The double-headed nozzle (4) is fixedly connected to two gas supply pipes (3) respectively. The double-headed nozzle (4) is composed of two single-headed nozzles.

3. The welding nozzle for welding medium and thick plates according to claim 1, characterized in that: Both of the connecting frames (52) have connecting holes inside, and both of the connecting frames (52) are equipped with fixing screws that are threaded to the inner wall of the connecting holes. One end of each fixing screw passes through the connecting sleeve (51) and abuts against the welding nozzle (1).

4. A welding nozzle for welding medium and thick plates according to claim 1, characterized in that: Both mounting frames (54) have through holes inside, and both mounting frames (54) are fitted with locking screws that are threaded to the inner wall of the through holes. One end of each locking screw passes through the mounting sleeve (53) and abuts against the double-headed nozzle (4).

5. A welding nozzle for welding medium and thick plates according to claim 1, characterized in that: Two circular slots are provided on each of the two connecting frames (52), and the two ends of the support column (55) pass through the two circular slots respectively. The two ends of the support column (55) are fixedly connected to the front and rear side walls of the inner cavity of the mounting frame (54) respectively.

6. A welding nozzle for welding medium and thick plates according to claim 1, characterized in that: Both of the guide components (58) include a limiting strip and a limiting groove. The limiting strip is fixedly installed on the front side wall of the inner cavity of the connecting frame (52). The limiting groove is opened on the front of the rack (57). The inner wall of the limiting groove is slidably connected to the outer surface of the limiting strip.

7. A welding nozzle for welding medium-thick plates according to claim 2, characterized in that: Both of the anti-detachment components (59) include two limiting plates, which are fixedly installed on the left and right sides of the rack (57) respectively, and the arched handle (61) is fixedly connected to the right limiting plate.

8. A welding nozzle for welding medium-thick plates according to claim 7, characterized in that: The two fixing components (60) include magnets, and the interior of the two limiting plates is provided with mounting grooves. The two magnets are respectively fixedly installed inside the mounting grooves, and the two connecting frames (52) are metal frames.

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