Welding head nozzle assembly

Abstract

The utility model relates to the technical field of welding head accessories, and discloses a welding head nozzle assembly, which comprises a protective sleeve and a nozzle body, the protective sleeve is sleeved on the outer wall of the nozzle body, the bottom side of the nozzle body is fixedly connected with a protective head, the outer wall of the nozzle body and the outer wall of the protective head are respectively provided with a diversion trench, and the diversion trenches are communicated with the protective head. And a fixing frame is fixedly connected to the middle end of the outer wall of the nozzle body, a cooling assembly is mounted in the fixing frame, a second mounting ring is fixedly connected to the top side of the protective sleeve, and a first mounting ring is fixedly connected to the top side of the nozzle body. According to the nozzle, the overheated nozzle body can be cooled, the possibility that the nozzle body cracks due to overheating is avoided, welding slag generated during welding can be blown away, the welding slag is prevented from being splashed to a welding gun, the service life of the nozzle is further prolonged, normal operation of welding work is guaranteed, and the working efficiency of the welding work is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding head accessories, in particular to a welding head nozzle assembly. Background Art

[0002] A welding gun is a tool used for gas welding. It is shaped like a gun and has a nozzle at the front end, which sprays high-temperature flames as a heat source. It is flexible, convenient and fast to use.

[0003] After searching, a welding nozzle joint and assembly with announcement number CN211102044U includes a nozzle and a joint body, one end of the nozzle is arranged in the joint body, and a metal sleeve is fixedly connected to the outer surface of the nozzle, the upper surface and the lower surface of the joint body are hinged with a pressure plate by hinges, and the opposite surfaces of the two pressure plates are fixedly connected with clamps. In the utility model, by setting a clamp, a metal sleeve, a clamping block and a clamping slot, the two clamping plates can clamp the metal sleeve, and the clamping block can be clamped into the clamping slot, so that the nozzle and the joint body can be fixed together, and by setting a side plate, a fixing block, a bolt and a pressure plate, the bolt can fix the two fixing blocks together, so that the side plate can fix the two pressure plates together, so that the nozzle and the joint body can be fixed more stably, avoiding the situation that the nozzle becomes loose and falls during operation, and improving the safety of welding work;

[0004] Based on the above patent, by setting the side plate, the fixing block, the bolt and the pressure plate, the bolt can fix the two fixing blocks together, so the side plate can fix the two pressure plates together, so that the nozzle and the joint body can be fixed more stably, avoiding the nozzle from loosening and falling during work, and improving the safety of welding work. However, the welding slag generated during the welding process is easy to splash into the nozzle at the front end of the welding gun, thereby causing the nozzle to be blocked. In this regard, in response to this technical problem, the present application proposes a welding head nozzle assembly. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a welding head nozzle assembly, aiming to improve the problem in the prior art that welding slag generated during welding is easy to splash into the nozzle at the front end of the welding gun, thereby causing nozzle clogging.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A welding head nozzle assembly comprises a protective sleeve and a nozzle body, wherein the protective sleeve is sleeved on the outer wall of the nozzle body, the bottom side of the nozzle body is fixedly connected with the protective head, the outer walls of the nozzle body and the protective head are provided with guide grooves, the middle end of the outer wall of the nozzle body is fixedly connected with a fixing frame, a cooling assembly is installed inside the fixing frame, the top side of the protective sleeve is fixedly connected with a mounting ring 2, the top side of the nozzle body is fixedly connected with a mounting ring 1, and the mounting ring 1 and the mounting ring 2 are connected by a splicing assembly.

[0008] Furthermore, the cooling assembly includes a main pipe located on the top side of the fixed frame, a plurality of branch pipes are fixedly connected to the bottom side of the main pipe, the bottom ends of the branch pipes pass through the bottom side of the fixed frame, and the outer walls of the branch pipes are located inside the fixed frame, and the output ends of the branch pipes are fixedly connected to the air nozzles.

[0009] Furthermore, an air inlet is fixedly connected to the outer periphery of the outer wall of the main pipe.

[0010] Furthermore, the splicing assembly includes four half screws respectively located on the left and right sides of the outer walls of mounting ring one and mounting ring two, the adjacent sides of the two half screws on the top side are fixedly connected to the outer wall of mounting ring one, the adjacent sides of the two half screws on the bottom side are fixedly connected to the outer wall of mounting ring two, and screw sleeves are threadedly connected on the outer walls of the half screws on the top and bottom sides.

[0011] Furthermore, an extension piece is fixedly connected to the outer wall of the screw sleeve.

[0012] Furthermore, the guide groove at the top end is connected to the guide groove at the bottom end.

[0013] Furthermore, the air nozzle is arranged obliquely, and the output end faces the guide groove.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the protective sleeve, the guide groove, the main pipe, the branch pipe and the air nozzle cooperate with each other, so that the overheated nozzle body can be cooled down to prevent the possibility of cracking of the nozzle body due to overheating, and the welding slag generated during welding can be blown away to prevent the welding slag from splashing onto the welding gun, thereby extending the service life of the nozzle, ensuring the normal progress of the welding work, and improving the working efficiency of the welding work.

[0016] 2. In the present invention, the half screw, the screw sleeve and the extension member cooperate with each other, so that the connection between the nozzle body and the protective sleeve can be released without tools, thereby improving the efficiency and convenience of replacing the nozzle body or the protective sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A three-dimensional diagram of a welding head nozzle assembly proposed by the utility model;

[0018] Figure 2 This is a schematic cross-sectional structure diagram of a welding head nozzle assembly proposed by the utility model;

[0019] Figure 3 This is a structural schematic diagram of a guide groove of a welding head nozzle assembly proposed by the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the structure of a half screw of a welding head nozzle assembly.

[0021] Legend:

[0022] 1. Protective sleeve; 2. Nozzle body; 3. Protective head; 4. Fixing bracket; 5. Branch pipe; 6. Main pipe; 7. Air inlet; 8. Mounting ring 1; 9. Mounting ring 2; 10. Half screw; 11. Screw sleeve; 12. Extension piece; 13. Guide groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-4 The utility model provides an embodiment: a welding head nozzle assembly, including a protective sleeve 1 and a nozzle body 2, the protective sleeve 1 is sleeved on the outer wall of the nozzle body 2, the bottom side of the nozzle body 2 is fixedly connected with a protective head 3, the outer walls of the nozzle body 2 and the protective head 3 are both provided with a guide groove 13, the top guide groove 13 is connected to the bottom guide groove 13, the middle end of the outer wall of the nozzle body 2 is fixedly connected with a fixing frame 4, the inside of the fixing frame 4 is installed with a cooling component, the top side of the protective sleeve 1 is fixedly connected with a mounting ring 9, the nozzle body 2 The top side is fixedly connected with a mounting ring 1 8, and the four half screws 10 located on the left and right sides of the outer walls of the mounting ring 1 8 and the mounting ring 2 9 are of the same specification. The two half screws 10 at the top and bottom can be spliced ​​together to form a complete screw. The adjacent sides of the two half screws 10 on the top side are fixedly connected to the outer wall of the mounting ring 1 8, and the adjacent sides of the two half screws 10 on the bottom side are fixedly connected to the outer wall of the mounting ring 2 9. The outer walls of the top and bottom half screws 10 are threadedly connected with screw sleeves 11, and the outer walls of the screw sleeves 11 are fixedly connected with extension pieces 12;

[0025] Specifically, by sleeved a protective sleeve 1 on the outer wall of the nozzle body 2, the nozzle body 2 can be protected, thereby improving the strength of the nozzle body 2, and when the nozzle body 2 is welded and subjected to high temperature, the sleeved protective sleeve 1 can reduce the possibility of cracking of the nozzle body 2. The extension piece 12 fixed on the outer wall of the screw sleeve 11 helps the staff's hands to better apply force to the screw sleeve 11, so that there is no need to twist the screw sleeve 11 with tools to disassemble it, which improves convenience. The protective sleeve 1 and the protective head 3 are both made of copper-tin alloy, which has excellent thermal conductivity and high melting point. They can be subjected to heat transfer from the overheated nozzle body 2, help the nozzle body 2 cool down, and increase the surface area of ​​the outer wall under the action of the guide groove 13, thereby improving heat dissipation. When the nozzle body 2 or the protective sleeve 1 is damaged, the screw sleeve 11 can be disassembled from the two half screws 10 by twisting the screw sleeve 11, thereby releasing the connection between the mounting ring 1 8 fixed to the nozzle body 2 and the mounting ring 2 9 fixed to the protective sleeve 1, and then the nozzle body 2 or the protective sleeve 1 can be conveniently replaced.

[0026] An air inlet 7 is fixedly connected to the outer periphery of the outer wall of the main pipe 6 located on the top side of the fixing frame 4, and a plurality of branch pipes 5 are fixedly connected to the bottom side of the main pipe 6. The bottom ends of the branch pipes 5 pass through the bottom side of the fixing frame 4, and the outer walls of the branch pipes 5 are located inside the fixing frame 4. The output ends of the branch pipes 5 are fixedly connected to the air nozzles.

[0027] Specifically, the air inlet 7 is used to connect an external low-temperature gas for conveying cooling gas. When welding, the nozzle body 2 will be subjected to a large amount of heat, which will cause the nozzle body 2 to heat up significantly, thereby increasing the risk of overheating damage. The cooling gas enters the main pipe 6 through the air inlet 7, and then enters the branch pipe 5 along the main pipe 6, and is ejected toward the guide groove 13 along the nozzle head at the output end of the branch pipe 5, and downward along the direction of the guide groove 13. The protective sleeve 1 and the protective head 3 are cooled by the cooling gas and ejected from the guide groove 13 of the protective head 3, and then the shape of the protective head 3 is used to expand the area of ​​the cooling gas outflow, and then the welding slag on the bottom side is blown away to prevent the welding slag from splashing onto the welding gun.

[0028] Working principle: During welding, the cooling gas will enter the main pipe 6 through the air inlet 7, and then enter the branch pipe 5 along the main pipe 6, and then be ejected toward the guide groove 13 along the nozzle head at the output end of the branch pipe 5, and then downward along the direction of the guide groove 13. The protective sleeve 1 and the protective head 3 are cooled by the cooling gas, and then ejected from the guide groove 13 of the protective head 3, and then the shape of the protective head 3 is used to expand the area of ​​the cooling gas outflow, and then the welding slag on the bottom side is blown away to prevent the welding slag from splashing onto the welding gun. When the nozzle body 2 or the protective sleeve 1 is damaged, the screw sleeve 11 can be removed from the two half screws 10 by twisting the screw sleeve 11, thereby releasing the connection between the mounting ring 1 8 fixed to the nozzle body 2 and the mounting ring 2 9 fixed to the protective sleeve 1, and then the nozzle body 2 or the protective sleeve 1 can be conveniently replaced.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding head nozzle assembly, comprising a protective sleeve (1) and a nozzle body (2), characterized in that: The protective sleeve (1) is sleeved on the outer wall of the nozzle body (2); the bottom side of the nozzle body (2) is fixedly connected to a protective head (3); the outer walls of the nozzle body (2) and the protective head (3) are both provided with guide grooves (13); the middle end of the outer wall of the nozzle body (2) is fixedly connected to a fixing frame (4); a cooling component is installed inside the fixing frame (4); the top side of the protective sleeve (1) is fixedly connected to a second mounting ring (9); the top side of the nozzle body (2) is fixedly connected to a first mounting ring (8); the first mounting ring (8) and the second mounting ring (9) are connected via a splicing component.

2. A welding head nozzle assembly according to claim 1, characterized in that: The cooling assembly comprises a main pipe (6) located on the top side of a fixing frame (4), a plurality of branch pipes (5) are fixedly connected to the bottom side of the main pipe (6), the bottom ends of the branch pipes (5) pass through the bottom side of the fixing frame (4), and the outer walls of the branch pipes (5) are located inside the fixing frame (4), and the output ends of the branch pipes (5) are fixedly connected to an air nozzle.

3. A welding head nozzle assembly according to claim 2, characterized in that: An air inlet (7) is fixedly connected to the outer periphery of the outer wall of the main pipe (6).

4. A welding head nozzle assembly according to claim 1, characterized in that: The splicing assembly comprises four half screws (10) respectively located on the left and right sides of the outer walls of the mounting ring 1 (8) and the mounting ring 2 (9), the adjacent sides of the two half screws (10) on the top side are fixedly connected to the outer wall of the mounting ring 1 (8), and the adjacent sides of the two half screws (10) on the bottom side are fixedly connected to the outer wall of the mounting ring 2 (9), and the outer walls of the half screws (10) on the top and bottom sides are threadedly connected with screw sleeves (11).

5. A welding head nozzle assembly according to claim 4, characterized in that: An extension piece (12) is fixedly connected to the outer wall of the screw sleeve (11).

6. A welding head nozzle assembly according to claim 1, characterized in that: The guide groove (13) at the top end is communicated with the guide groove (13) at the bottom end.

7. A welding head nozzle assembly according to claim 2, characterized in that: The air jet is arranged obliquely, and the output end faces the guide groove (13).

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