A connection device for a welding torch contact tip

Abstract

The utility model relates to welding torch structure technical field discloses a kind of connecting device of welding torch electrically conductive nozzle, comprising: connecting pipe, tail end outer circumferential side is equipped with outer thread, which is used to be connected with welding torch thread;Electrically conductive nozzle unit, nozzle section, thread section and guide section are distributed gradually from front to back, the first end inner ring side of the connecting pipe is equipped with inner thread, which is used to be connected with the thread section thread, wherein, gap is arranged between the guide section and the connecting pipe inner side wall, a plurality of chip removal ports are equipped on the guide section, the connecting pipe side wall surface is equipped with heat dissipation air duct, and both ends of the heat dissipation air duct are through. It can realize the heat dissipation of electrically conductive nozzle, avoid plugging chip removal port, and facilitate disassembly electrically conductive nozzle to maintain replacement.

Description

Technical Field

[0001] This utility model relates to the field of welding torch structure technology, and in particular to a connection device for a welding torch conductive tip. Background Technology

[0002] A welding torch is a gun-shaped device that performs welding operations. During operation, the welding torch supplies electricity to the welding wire through a conductive tip, generating high temperatures to melt the welding wire for welding. As a result, some welding torches in the prior art are designed with heat dissipation structures for the conductive tip, thereby extending their service life.

[0003] For example, in a gas shielded welding torch contact tip cooling device with patent number CN216096923U, an annular water cavity is set to cool the contact tip. However, the contact tip itself usually has a chip discharge port. Although the annular water cavity can dissipate heat, it also blocks the chip discharge port. Therefore, the prior art has certain structural defects. In addition, in order to facilitate the replacement of the contact tip, the contact tip is usually threaded to the welding torch. If the prior art opens a thread on the inner wall of the annular water cavity to connect the contact tip, it will make the welding torch structure more complicated. Furthermore, the annular water cavity is fixed as an integral part of the welding torch structure, which makes it inconvenient to disassemble and maintain the overall structure. Utility Model Content

[0004] The purpose of this invention is to provide a connection device for the conductive tip of a welding torch to solve the problems existing in the prior art. It can dissipate heat from the conductive tip, avoid blocking the chip discharge port, and facilitate the disassembly of the conductive tip for maintenance and replacement.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a connection device for a welding torch conductive tip, comprising: The connecting pipe has an external thread on the outer circumference of its tail end, which is used for threaded connection with the welding gun. The conductive nozzle unit has a nozzle section, a threaded section, and a guide section distributed sequentially from front to back. The inner ring side of the first end of the connecting tube has an internal thread for threaded connection with the threaded section. A gap is provided between the guide section and the inner wall of the connecting tube. Several chip discharge ports are provided on the guide section. A heat dissipation duct is provided on the side wall of the connecting tube, and the two ends of the heat dissipation duct are connected.

[0006] Preferred options also include: The guide seat is elastically slidably connected inside the connecting tube, and one end of the guide segment extending into the connecting tube is engaged with the guide seat. The guide seat has an elastic tendency to move towards the guide segment.

[0007] Preferably, a positioning ring is fixedly connected to the inner ring side of the tail end of the connecting pipe, and a support ring is fixedly connected to the side of the positioning ring near the guide section. A sliding groove is opened on the side wall of the guide seat, and the support ring slides in contact with the sliding groove. A support spring is wound around the support ring, and the two ends of the support spring are fixedly connected to the guide seat and the positioning ring, respectively.

[0008] Preferably, the guide segment has a tapered structure on the side near the guide seat, and the side wall of the guide seat has a tapered groove, in which the guide segment is engaged.

[0009] Preferably, a guide tube is fixedly connected to the side of the guide seat near the positioning ring, and the guide tube is slidably connected to the inner ring side of the positioning ring.

[0010] Preferably, the inner diameter of the heat dissipation duct gradually decreases from the outside of the connecting pipe toward the center.

[0011] Preferably, the conductive nozzle unit has a welding wire hole at its center, and the guide seat has a through hole, which is coaxially distributed with the welding wire hole.

[0012] Preferably, the distance between the guide seat and the positioning ring is less than the distance between the support ring and the inner wall surface of the groove.

[0013] The present invention discloses the following technical effects: This invention connects directly to the welding torch via a connecting pipe, and uses the internal thread at the beginning of the connecting pipe to connect with the threaded section of the conductive nozzle unit, forming a detachable connection between the conductive nozzle unit and the welding torch. A gap is set between the connecting pipe and the guide section to form a heat dissipation area corresponding to the chip discharge port. By opening a heat dissipation duct on the side wall of the connecting pipe, heat is dissipated from the conductive nozzle unit while ensuring that welding chips can be effectively discharged from the chip discharge port, preventing blockage. In addition, the arrangement of the connecting pipe allows the connecting pipe and the welding torch, as well as the conductive nozzle unit and the connecting pipe, to be disassembled separately, facilitating the disassembly of the entire connection device for maintenance and replacement of any damaged components. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall device in this utility model; Figure 2 This is a schematic diagram of the connecting pipe in this utility model; Figure 3 This is a schematic diagram of the conductive nozzle unit in this utility model; Figure 4 This is a diagram showing the connection relationship between the guide section and the guide seat in this utility model; Among them, 1. connecting pipe; 2. conductive nozzle unit; 21. nozzle section; 22. threaded section; 23. guide section; 3. heat dissipation air duct; 4. guide seat; 5. positioning ring; 6. support ring; 7. support spring; 8. guide pipe. Detailed Implementation

[0016] 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.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Reference Figures 1-4 This utility model provides a connection device for the conductive tip of a welding torch, comprising: The connecting pipe 1 has an external thread on the outer circumference of its tail end, which is used to connect with the welding gun thread. The conductive nozzle unit 2 has a nozzle section 21, a threaded section 22 and a guide section 23 distributed from front to back. The inner ring side of the first end of the connecting pipe 1 is provided with an internal thread, which is used to connect with the threaded section 22. A gap is provided between the guide section 23 and the inner side wall of the connecting pipe 1. Several chip discharge ports are provided on the guide section 23. A heat dissipation air duct 3 is provided on the side wall of the connecting pipe 1, and the two ends of the heat dissipation air duct 3 are connected.

[0019] This invention connects the connecting pipe 1 directly to the welding torch via a threaded connection. The internal thread at the beginning of the connecting pipe 1 is threaded to the threaded section 22 of the conductive nozzle unit 2, forming a detachable connection between the conductive nozzle unit 2 and the welding torch. A gap is provided between the connecting pipe 1 and the guide section 23 to form a heat dissipation area corresponding to the chip discharge port. By opening a heat dissipation duct 3 on the side wall of the connecting pipe 1, heat is dissipated from the conductive nozzle unit 2 while ensuring that the chip discharge port can effectively discharge welding debris, preventing blockage of the chip discharge port. In addition, the arrangement of the connecting pipe 1 allows the connecting pipe 1 and the welding torch, as well as the conductive nozzle unit 2 and the connecting pipe 1, to be disassembled separately, facilitating the disassembly of the entire connection device for maintenance and replacement of any damaged structure.

[0020] Specifically, a common MIG / MAG welding torch can be used. Threads are made on the inner ring side of the connecting rod at the front end of the bend (not shown in the figure). The external thread at the tail end of the connecting pipe 1 is fixed to the thread of the front connecting rod. For the sake of simplicity, this can be directly obtained without further explanation.

[0021] Furthermore, it also includes: The guide seat 4 is elastically slidably connected inside the connecting pipe 1. One end of the guide section 23 extends into the connecting pipe 1 and is engaged with the guide seat 4. The guide seat 4 has an elastic tendency toward the guide section 23.

[0022] By sliding the guide seat 4 inside the connecting pipe 1 and snapping the guide section 23 onto the guide seat 4, the guide seat 4 provides elastic support towards the guide section 23, thereby creating a pre-tightening force on the threaded section 22 and improving the fixing effect between the conductive nozzle unit 2 and the connecting pipe 1.

[0023] Furthermore, a positioning ring 5 is fixedly connected to the inner ring side of the tail end of the connecting pipe 1, and a support ring 6 is fixedly connected to the side of the positioning ring 5 near the guide section 23. A sliding groove is opened on the side wall of the guide seat 4, and the support ring 6 slides in contact with the sliding groove. A support spring 7 is wound around the support ring 6, and the two ends of the support spring 7 are fixedly connected to the guide seat 4 and the positioning ring 5 respectively.

[0024] The guide seat 4 and the positioning ring 5 are limited and slidably connected by the support ring 6 and the slide groove, and the support spring 7 provides elastic support force to the guide seat 4, so that the guide seat 4 and the guide section 23 are abutted.

[0025] Furthermore, the guide section 23 has a tapered structure on the side near the guide seat 4, and a tapered groove is provided on the side wall of the guide seat 4, in which the guide section 23 is engaged.

[0026] By opening a tapered groove on the guide seat 4 corresponding to the guide section 23, a guiding effect is formed when the guide section 23 extends into the connecting pipe 1. Combined with the elastic support of the support spring 7 on the guide seat 4, the support stability is enhanced.

[0027] Furthermore, a guide tube 8 is fixedly connected to the side of the guide seat 4 near the positioning ring 5, and the guide tube 8 is slidably connected to the inner ring side of the positioning ring 5.

[0028] The guide seat 4 is stabilized by the sliding fit between the guide tube 8 and the positioning ring 5.

[0029] Furthermore, the inner diameter of the heat dissipation duct 3 gradually decreases from the outside to the center along the connecting pipe 1, thereby facilitating the flow of external air into the gap between the guide section 23 and the connecting pipe 1, forming an efficient heat dissipation for the guide section 23.

[0030] Furthermore, the conductive nozzle unit 2 has a welding wire hole in its center and a through hole on the guide seat 4, with the through hole and the welding wire hole being coaxially distributed.

[0031] Understandably, the nozzle section 21, threaded section 22 and guide section 23 are coaxially provided with welding wire holes, and the diameter of the through holes is the same as that of the welding wire holes, so that the welding wire can pass through and extend out of the nozzle section 21.

[0032] Furthermore, the distance between the guide seat 4 and the positioning ring 5 is less than the distance between the support ring 6 and the inner wall of the relative slide groove.

[0033] When the guide section 23 presses the guide seat 4, the support ring 6 extends into the slide groove and slides. When the support spring 7 is compressed to its limit, there is still a distance between the support ring 6 and the slide groove, which ensures the sliding effect between the guide seat 4 and the support ring 6.

[0034] This utility model provides the working principle of a connection device for a welding torch conductive tip: Connect the connecting pipe 1 to the welding torch by threading it. Then rotate the conductive nozzle unit 2 to insert the guide section 23 into the connecting pipe 1. Secure the guide section 23 onto the guide seat 4 and screw the nozzle section 21 to connect and fix the threaded section 22 to the connecting pipe 1 by threading it. The guide seat 4 is elastically supported by the support spring 7. The guide seat 4 elastically resists the guide section 23, which pre-tightens the threaded section 22 and the internal thread to improve the fixing stability. The heat dissipation air duct 3 opened on the side wall of the connecting pipe 1 can dissipate heat from the guide section 23 and connect the chip discharge port opened on the guide section 23 to the outside.

[0035] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A connecting device for a welding torch conductive tip, characterized in that, include: The connecting pipe (1) has an external thread on the outer circumference of its tail end, which is used to connect with the welding gun thread; The conductive nozzle unit (2) has a nozzle section (21), a threaded section (22) and a guide section (23) distributed from front to back. The inner ring side of the first end of the connecting pipe (1) is provided with an internal thread, which is used to connect with the threaded section (22). There is a gap between the guide section (23) and the inner side wall of the connecting pipe (1). Several chip discharge ports are provided on the guide section (23). A heat dissipation air duct (3) is provided on the side wall of the connecting pipe (1), and the two ends of the heat dissipation air duct (3) are connected.

2. The connecting device for the welding torch conductive tip according to claim 1, characterized in that, Also includes: The guide seat (4) is elastically slidably connected inside the connecting tube (1). One end of the guide segment (23) extending into the connecting tube (1) is engaged with the guide seat (4). The guide seat (4) has an elastic tendency toward the guide segment (23).

3. The connecting device for the welding torch conductive tip according to claim 2, characterized in that: A positioning ring (5) is fixedly connected to the inner ring side of the tail end of the connecting pipe (1). A support ring (6) is fixedly connected to the side of the positioning ring (5) near the guide section (23). A sliding groove is opened on the side wall of the guide seat (4). The support ring (6) slides in contact with the sliding groove. A support spring (7) is wound around the outside of the support ring (6). The two ends of the support spring (7) are fixedly connected to the guide seat (4) and the positioning ring (5) respectively.

4. The connecting device for the welding torch conductive tip according to claim 2, characterized in that: The guide section (23) has a tapered structure on the side near the guide seat (4), and a tapered groove is provided on the side wall of the guide seat (4), and the guide section (23) is engaged in the tapered groove.

5. The connecting device for the welding torch conductive tip according to claim 3, characterized in that: The guide seat (4) is fixedly connected to a guide tube (8) on the side near the positioning ring (5), and the guide tube (8) is slidably connected to the inner ring side of the positioning ring (5).

6. The connecting device for the welding torch conductive tip according to claim 1, characterized in that: The inner diameter of the heat dissipation duct (3) gradually decreases from the outside of the connecting pipe (1) toward the center.

7. The connecting device for the welding torch conductive tip according to claim 2, characterized in that: The conductive nozzle unit (2) has a welding wire hole in its center, and the guide seat (4) has a through hole. The through hole and the welding wire hole are coaxially distributed.

8. The connecting device for the welding torch conductive tip according to claim 3, characterized in that: The distance between the guide seat (4) and the positioning ring (5) is less than the distance between the support ring (6) and the inner wall of the groove.

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