Welding equipment capable of centralizing protective airflow

Abstract

The utility model discloses welding equipment for centralizing protective airflow, which belongs to the technical field of electric arc welding and comprises a contact tube, the contact tube is connected with a contact tube seat, the contact tube is connected with a welding gun through the contact tube seat, the contact tube is positioned at the tip of the welding gun, a nozzle is sleeved on the contact tube, and a gas flow channel is formed between the nozzle and the contact tube. And the gas flow channel is used for providing concentrated protective gas flow for welding. According to the protective gas hood for automatic welding of the nozzle, high-speed airflow is adopted for protection, so that heat in the welding process is conducted and dissipated more easily, and the welding speed can be increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of arc welding, and in particular relates to welding equipment with centralized protective airflow. Background Art

[0002] At present, the existing fully automatic pipeline welding equipment in marine engineering cannot achieve high fatigue performance welding, and the marine environment is characterized by shaking, high temperature and humidity, and the pipeline welds are very prone to oxidation. Traditional protective gas hoods cannot achieve the welding protection effect, and problems such as black welds and severe oxidation occur. How to develop automatic welding equipment with high fatigue performance welding capabilities and overcome welding protection problems in complex marine environments is the technical key to ensuring the stability of welding equipment and processes.

[0003] Therefore, it is urgent to design a welding device with centralized protective airflow to solve the above-mentioned problems. Utility Model Content

[0004] The utility model aims to provide a welding device with a centralized protective airflow, which has the advantages of high welding efficiency and good protective effect, and solves the problems mentioned in the background technology.

[0005] To achieve the above purpose, the specific technical solution of a welding device with centralized protective airflow of the utility model is as follows:

[0006] A welding device with centralized protective airflow comprises a conductive nozzle, which is connected to a conductive nozzle seat, and the conductive nozzle is connected to a welding gun through the conductive nozzle seat. The conductive nozzle is located at the tip of the welding gun, and a nozzle is sleeved on the conductive nozzle. A gas flow channel is formed between the nozzle and the conductive nozzle, and a centralized protective airflow is provided for welding through the gas flow channel.

[0007] Furthermore, the conductive nozzle comprises a first cylindrical section and a first conical section, one end of the first cylindrical section is connected to the conductive nozzle seat, and one end of the first cylindrical section away from the conductive nozzle seat is fixedly connected to the first conical section.

[0008] Furthermore, the overall length of the first cylindrical section and the first conical section is 45 mm-60 mm, and the length of the first cylindrical section is 12 mm-18 mm.

[0009] Furthermore, the first conical section is provided with a large diameter end and a small diameter end, the large diameter end of the first conical section is fixedly connected to the first cylindrical section, and the outer diameter of the large diameter end of the first conical section is the same as the outer diameter of the first cylindrical section.

[0010] Furthermore, the outer diameter of the large-diameter end of the first tapered section is 4 mm-6 mm, and the outer diameter of the small-diameter end of the first tapered section is 2.5 mm-3.5 mm.

[0011] Furthermore, a through hole is provided on the nozzle, and the nozzle is sleeved on the conductive nozzle through the through hole.

[0012] Furthermore, the nozzle includes a second cylindrical section and a second conical section, and the second cylindrical section is fixedly connected to the second conical section.

[0013] Furthermore, the overall length of the second cylindrical section and the second conical section is 60 mm-66 mm, and the length of the second cylindrical section is 35 mm-45 mm.

[0014] Furthermore, the second conical section is provided with a large diameter end and a small diameter end, the large diameter end of the second conical section is fixedly connected to the second cylindrical section, the outer diameter of the large diameter end of the second conical section is the same as the outer diameter of the second cylindrical section, and the small diameter end of the first conical section extends beyond the small diameter end of the second conical section through a through hole.

[0015] Furthermore, the outer diameter of the large-diameter end of the second tapered section is 22 mm-28 mm, and the outer diameter of the small-diameter end of the second tapered section is 14 mm-18 mm.

[0016] The utility model has the following advantages: (1) The nozzle automatic welding protective gas hood adopts high-speed airflow for protection, which makes it easier to conduct and dissipate heat during welding, thereby increasing the welding speed.

[0017] (2) Since the output of the protective gas is more concentrated, the utility model can effectively isolate air and water vapor, prevent adverse effects on the welding process, and thus improve the welding quality.

[0018] (3) The nozzle automatic welding protective gas hood adopts a highly efficient energy conversion method, which can reduce energy consumption while ensuring welding quality.

[0019] (4) The nozzle automatic welding protective gas hood realizes automated production, reduces manual operation links, and reduces labor intensity.

[0020] (5) The nozzle automatic welding protective gas hood can adjust the size and angle of the conical nozzle according to different welding requirements to meet the requirements of various special processes and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an exploded schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the nozzle of the utility model;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the conductive nozzle of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the nozzle and the conductive nozzle of the utility model;

[0025] Explanation of the markings in the figure: 1. conductive nozzle fastener; 2. nozzle; 21. second cylindrical section; 22. second conical section; 3. conductive nozzle; 31. first cylindrical section; 32. first conical section; 4. conductive nozzle seat. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0027] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0028] Please refer to the attached Figure 1 To Attachment Figure 4 The utility model describes a welding device with centralized protective airflow.

[0029] At present, traditional protective gas hoods cannot achieve the welding protection effect, and problems such as black welds and severe oxidation will occur.

[0030] The welding equipment includes a conductive nozzle 3, which is connected to a conductive nozzle holder 4. The conductive nozzle 3 is connected to a welding gun through the conductive nozzle holder 4. The conductive nozzle 3 is located at the tip of the welding gun. A nozzle 2 is sleeved on the conductive nozzle 3. A gas flow channel is formed between the nozzle 2 and the conductive nozzle 3. The gas flow channel is used to provide a concentrated protective gas flow for welding. The welding equipment also includes a conductive nozzle fastener 1 to fasten the conductive nozzle 3.

[0031] Preferably, the conductive nozzle 3 is made of ceramic spraying, so as to have a better insulation effect. In other embodiments of the utility model, the conductive nozzle 3 can also be made of other materials and processes as long as it can meet the production requirements.

[0032] The conductive nozzle 3 includes a first cylindrical section 31 and a first conical section 32. One end of the first cylindrical section 31 is connected to the conductive nozzle 3 seat, and one end of the first cylindrical section 31 away from the conductive nozzle 3 seat is fixedly connected to the first conical section 32. The overall length of the first cylindrical section 31 and the first conical section 32 is 45mm-60mm, and the length of the first cylindrical section 31 is 12mm-18mm.

[0033] The first conical section 32 is provided with a large diameter end and a small diameter end. The large diameter end of the first conical section 32 is fixedly connected to the first cylindrical section 31. The outer diameter of the large diameter end of the first conical section 32 is the same as the outer diameter of the first cylindrical section 31. The outer diameter of the large diameter end of the first conical section 32 is 4mm-6mm, and the outer diameter of the small diameter end of the first conical section 32 is 2.5mm-3.5mm, which is suitable for narrow gap groove welding.

[0034] The conductive nozzle 3 is provided with an inner hole, and the diameter of the inner hole can be set between 1 mm and 2.5 mm according to different diameters of the welding wire.

[0035] The nozzle 2 is provided with a through hole, and the nozzle 2 is sleeved on the conductive nozzle 3 through the through hole; the nozzle 2 includes a second cylindrical section 21 and a second conical section 22, and the second cylindrical section 21 is fixedly connected to the second conical section 22; the overall length of the second cylindrical section 21 and the second conical section 22 is 60mm-66mm, and the length of the second cylindrical section 21 is 35mm-45mm. The second conical section 22 is provided with a large diameter end and a small diameter end, and the large diameter end of the second conical section 22 is fixedly connected to the second cylindrical section 21, and the outer diameter of the large diameter end of the second conical section 22 is the same as the outer diameter of the second cylindrical section 21, and the small diameter end of the first conical section 32 extends out of the small diameter end of the second conical section 22 through the through hole to improve the protection effect. The outer diameter of the large diameter end of the second conical section 22 is 22mm-28mm, and the outer diameter of the small diameter end of the second conical section 22 is 14mm-18mm.

[0036] The second conical section 22 of the nozzle 2 has a greater taper to more concentrate the protective air flow.

[0037] By shortening the length and increasing the taper, a more concentrated protective airflow can be provided, thereby achieving a better protective effect.

[0038] The shielding gas is transported to the nozzle 2 through a pipeline. Due to the large taper of the nozzle 2, the gas forms a high-speed rotating airflow inside the nozzle 2. This airflow has a high dynamic pressure energy and can quickly push the gas to the welding area. The nozzle 2 evenly distributes the high-speed rotating airflow around the welding area to form a thin layer of shielding gas. This shielding gas layer can effectively isolate air and water vapor to prevent adverse effects on the welding process. Under the protection of the shielding gas layer, welding operations are carried out. Since the output of the shielding gas is more concentrated, the heat in the welding process is more easily effectively conducted and dissipated, thereby improving the welding speed and quality.

[0039] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A welding device with centralized protective airflow, characterized in that: The conductive nozzle comprises a conductive nozzle, which is connected to a conductive nozzle seat, and the conductive nozzle is connected to a welding gun through the conductive nozzle seat. The conductive nozzle is located at the tip of the welding gun, and a nozzle is sleeved on the conductive nozzle. A gas flow channel is formed between the nozzle and the conductive nozzle, and a concentrated protective gas flow is provided for welding.

2. The welding equipment with centralized shielding airflow according to claim 1, characterized in that: The conductive nozzle comprises a first cylindrical section and a first conical section, one end of the first cylindrical section is connected to the conductive nozzle seat, and one end of the first cylindrical section away from the conductive nozzle seat is fixedly connected to the first conical section.

3. The welding equipment with centralized shielding airflow according to claim 2, characterized in that: The overall length of the first cylindrical section and the first conical section is 45 mm-60 mm, and the length of the first cylindrical section is 12 mm-18 mm.

4. The welding equipment with centralized shielding airflow according to claim 2, characterized in that: The first conical section is provided with a large diameter end and a small diameter end. The large diameter end of the first conical section is fixedly connected to the first cylindrical section. The outer diameter of the large diameter end of the first conical section is the same as the outer diameter of the first cylindrical section.

5. The welding equipment with centralized shielding airflow according to claim 4, characterized in that: The outer diameter of the large-diameter end of the first tapered section is 4mm-6mm, and the outer diameter of the small-diameter end of the first tapered section is 2.5mm-3.5mm.

6. The welding equipment with centralized shielding airflow according to claim 1, characterized in that: A through hole is provided on the nozzle, and the nozzle is sleeved on the conductive nozzle through the through hole.

7. The welding equipment with centralized shielding airflow according to claim 6, characterized in that: The nozzle comprises a second cylindrical section and a second conical section, wherein the second cylindrical section is fixedly connected to the second conical section.

8. The welding equipment with centralized shielding airflow according to claim 7, characterized in that: The overall length of the second cylindrical section and the second conical section is 60mm-66mm, and the length of the second cylindrical section is 35mm-45mm.

9. The welding equipment with centralized shielding airflow according to claim 4 or 7, characterized in that: The second conical section is provided with a large diameter end and a small diameter end. The large diameter end of the second conical section is fixedly connected to the second cylindrical section. The outer diameter of the large diameter end of the second conical section is the same as the outer diameter of the second cylindrical section. The small diameter end of the first conical section extends beyond the small diameter end of the second conical section through a through hole.

10. The welding equipment with centralized shielding airflow according to claim 9, characterized in that: The outer diameter of the large-diameter end of the second tapered section is 22mm-28mm, and the outer diameter of the small-diameter end of the second tapered section is 14mm-18mm.

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