Copper nozzle capable of effectively reducing black smoke and splashing during laser welding

Abstract

The utility model relates to the field of welding accessories, and discloses a copper nozzle capable of effectively reducing black smoke and splashing during laser welding, which comprises a nozzle body, the top end of the nozzle body is fixedly connected with a connecting column, the outer wall of the connecting column is provided with a connecting assembly, the top end of the connecting column is provided with an air inlet, and the bottom end of the nozzle body is provided with an air outlet. The nozzle body is in a semi-funnel shape, the air inlet is circular, the air outlet is semicircular, a positioning ring is fixedly connected to the outer wall of the nozzle body, an indication mark is arranged on the outer wall of the positioning ring, and a screw feeding buckle is fixedly connected to the position, close to the bottom end, of the outer wall of the nozzle body. According to the nozzle, the nozzle body is arranged to be in the semi-funnel shape, the shapes of the gas outlet and the gas inlet are changed at the same time, protective gas can be guided to be sprayed out in an accelerated mode, and due to the fact that the flow speed of gas flow is increased but the flow is kept unchanged, the welding seam cooling speed can be increased, and the splashing probability is reduced.

Description

Technical Field

[0001] This utility model relates to the field of welding accessories, and in particular to a copper nozzle that effectively reduces black smoke and spatter generated during laser welding. Background Technology

[0002] A copper nozzle is a key component used in laser welding machines. During welding operations, the copper nozzle can be directly connected to the shielding gas delivery pipeline, allowing the shielding gas to be sprayed into the welding area in a specific flow direction and manner. By spraying the shielding gas, the welding process can be ensured to be stable.

[0003] During high-power laser welding, the plate and welding wire change from solid to molten state at high temperatures, generating a large amount of waste gas, which greatly affects the laser welding effect. It also significantly impacts the weld formation after cooling and affects the blowing out of the shielding gas. To address these issues, a copper nozzle that effectively reduces black smoke and spatter during laser welding is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a copper nozzle that effectively reduces black smoke and spatter during laser welding, aiming to improve the problem in the prior art that "waste gas is generated during welding of plates and welding wires, affecting the welding operation".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a copper nozzle that effectively reduces black smoke and spatter generated during laser welding, comprising a nozzle body, a connecting post fixedly connected to the top of the nozzle body, a connecting component provided on the outer wall of the connecting post, an air inlet provided at the top of the connecting post, an air outlet provided at the bottom of the nozzle body, the nozzle body being configured as a semi-funnel shape, the air inlet being configured as a circle, and the air outlet being configured as a semi-circle.

[0006] As a further description of the above technical solution:

[0007] A positioning ring is fixedly connected to the outer wall of the mouthpiece, and an indicator mark is provided on the outer wall of the positioning ring.

[0008] As a further description of the above technical solution:

[0009] A thread feeder is fixedly connected to the outer wall of the mouth near the bottom.

[0010] As a further description of the above technical solution:

[0011] The connecting assembly includes a rotating sleeve, which is rotatably connected to the outer wall of the connecting column, and a connecting sleeve is fixedly connected to the inner wall of the rotating sleeve.

[0012] As a further description of the above technical solution:

[0013] The right end of the rotating sleeve is slidably connected to a pressing block, and the left end of the pressing block is attached to the outer wall of the connecting column.

[0014] As a further description of the above technical solution:

[0015] The right end of the extrusion block is rotatably connected to a threaded rod, and the right end of the threaded rod is fixedly connected to a knob.

[0016] As a further description of the above technical solution:

[0017] The threaded rod and the rotating sleeve are connected by threads.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, by setting the nozzle body to a semi-funnel shape and changing the shape of the air outlet and air inlet, the protective gas can be guided to be ejected faster. Since the airflow velocity is increased but the flow rate remains unchanged, the cooling speed of the weld can be accelerated and the probability of spatter can be reduced.

[0020] 2. In this utility model, by setting a connecting component, when the position of the wire feeding buckle and the wire feeder is not aligned during the installation of the nozzle body, the position of the nozzle body can be changed by adjusting the connecting component. In this way, the wire feeder and the wire feeding buckle can be aligned without disassembling the nozzle body, making the overall device more convenient to use. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0022] Figure 2 This is a three-dimensional cross-sectional view of the nozzle body in this utility model;

[0023] Figure 3 This is a three-dimensional cross-sectional diagram of the connecting component in this utility model.

[0024] Legend:

[0025] 1. Nozzle body; 2. Positioning ring; 3. Indicator mark; 4. Feed thread; 5. Connecting assembly; 51. Rotating sleeve; 52. Connecting sleeve; 53. Extrusion block; 54. Threaded rod; 55. Knob; 6. Air outlet; 7. Air inlet; 8. Connecting column. Detailed Implementation

[0026] 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.

[0027] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a copper nozzle that effectively reduces black smoke and spatter during laser welding. It includes a nozzle body 1 for guiding the direction of gas flow. A connecting post 8 for supporting a connecting assembly 5 is fixedly connected to the top of the nozzle body 1. The outer wall of the connecting post 8 is provided with a connecting assembly 5 for connecting the connecting post 8 and a gas supply pipe. An air inlet 7 for allowing gas to enter the nozzle body 1 is provided at the top, and an air outlet 6 for discharging gas is provided at the bottom of the nozzle body 1. The nozzle body 1 is semi-funnel-shaped, wider at the top and narrower at the bottom. After the gas enters the nozzle body 1, the cross-section continuously decreases, causing the gas to flow more rapidly downwards. The air inlet 7 is circular, and the air outlet 6 is semi-circular. During welding, the vertical portion of the semi-circular cross-section guides the air towards the arc-shaped portion, while the arc-shaped portion ensures smooth airflow.

[0028] Reference Figure 1 - Figure 3 A positioning ring 2 is fixedly connected to the outer wall of the nozzle body 1. The outer wall of the positioning ring 2 is provided with an indicator mark 3 for easy identification of the whole device by the operator. A wire feed buckle 4 for guiding the welding wire is fixedly connected to the outer wall of the nozzle body 1 near the bottom. The connecting assembly 5 includes a rotating sleeve 51 for connecting the connecting sleeve 52 and the connecting post 8. The rotating sleeve 51 is rotatably connected to the outer wall of the connecting post 8. The inner wall of the rotating sleeve 51 is fixedly connected to the connecting sleeve 52 for connecting the gas pipeline. The inner diameter of the connecting sleeve 52 is the same as the outer diameter of the air inlet 7.

[0029] Reference Figure 1 - Figure 3 The right end of the rotating sleeve 51 is slidably connected to a pressing block 53 for fixing the rotating sleeve 51. The left end of the pressing block 53 is in contact with the outer wall of the connecting column 8. By pressing the outer wall of the rotating sleeve 51 with the pressing block 53, the rotating sleeve 51 can be fixed to the outer wall of the connecting column 8. The right end of the pressing block 53 is rotatably connected to a threaded rod 54 for moving the pressing block 53. The right end of the threaded rod 54 is fixedly connected to a knob 55 for the operator to rotate the threaded rod 54. The threaded rod 54 and the rotating sleeve 51 are threadedly connected. By rotating the knob 55, the threaded rod 54 can be rotated. The rotation of the threaded rod 54 can move the pressing block 53 left and right.

[0030] Working principle: Before welding, the entire device needs to be installed at the end of the air blowing pipe. The specific installation steps are as follows: First, connect the connecting sleeve 52 to the air blowing pipe through the external thread on the outer wall of the connecting sleeve 52. Then, rotate the nozzle body 1 to align the wire feeding thread 4 with the wire feeder. Then, rotate the knob 55 to drive the threaded rod 54 to rotate. The rotation of the threaded rod 54 will drive the extrusion block 53 to press the outer wall of the rotating sleeve 51, thus fixing the connecting column 8. At this time, the entire device is installed.

[0031] During welding, gas enters the mouthpiece 1 through the inlet 7 and flows downwards along the inside of the mouthpiece 1, eventually being discharged to the welding point through the outlet 6. Since the inner cross-section of the mouthpiece 1 decreases uniformly from top to bottom, and since the airflow rate into the mouthpiece 1 remains constant while the cross-sectional area inside the mouthpiece 1 continuously decreases, the gas flow velocity gradually increases as it flows inside the mouthpiece 1. This accelerates the cooling speed of the weld. At the same time, the high-speed airflow disperses the fumes generated at the weld location and guides the sparks generated during welding to scatter in the direction of the airflow, thus preventing spatter from injuring the operator.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A copper nozzle that effectively reduces black smoke and spatter during laser welding, comprising a nozzle body (1), characterized in that: The top end of the mouthpiece (1) is fixedly connected to a connecting post (8), the outer wall of the connecting post (8) is provided with a connecting component (5), the top end of the connecting post (8) is provided with an air inlet (7), the bottom end of the mouthpiece (1) is provided with an air outlet (6), the mouthpiece (1) is configured as a semi-funnel shape, the air inlet (7) is configured as a circle, and the air outlet (6) is configured as a semi-circle.

2. The copper nozzle for effectively reducing black smoke and spatter during laser welding according to claim 1, characterized in that: The outer wall of the mouthpiece (1) is fixedly connected to a positioning ring (2), and the outer wall of the positioning ring (2) is provided with an indicator mark (3).

3. The copper nozzle for effectively reducing black smoke and spatter during laser welding according to claim 1, characterized in that: The outer wall of the mouthpiece (1) is fixedly connected to a thread feeder (4) near the bottom.

4. A copper nozzle for effectively reducing black smoke and spatter during laser welding according to claim 1, characterized in that: The connecting assembly (5) includes a rotating sleeve (51), which is rotatably connected to the outer wall of the connecting column (8), and a connecting sleeve (52) is fixedly connected to the inner wall of the rotating sleeve (51).

5. A copper nozzle for effectively reducing black smoke and spatter during laser welding according to claim 4, characterized in that: The right end of the rotating sleeve (51) is slidably connected to an extrusion block (53), and the left end of the extrusion block (53) is attached to the outer wall of the connecting column (8).

6. A copper nozzle for effectively reducing black smoke and spatter during laser welding according to claim 5, characterized in that: The right end of the extrusion block (53) is rotatably connected to a threaded rod (54), and the right end of the threaded rod (54) is fixedly connected to a knob (55).

7. A copper nozzle for effectively reducing black smoke and spatter during laser welding according to claim 6, characterized in that: The threaded rod (54) and the rotating sleeve (51) are connected by threads.

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