High-temperature-resistant carbon dioxide non-stick slag protection nozzle

Abstract

The utility model discloses a kind of carbon dioxide high-temperature-resistant slag-attached protection nozzle, belong to the technical field of welding equipment, including carbon dioxide welding machine body, welding torch and protection nozzle main body, the inside of protection nozzle main body is equipped with heat dissipation cavity, the opening end portion of heat dissipation cavity is connected with swivel through bearing, the end portion of swivel is slidably inserted with slag ring by guide rod, the end portion inside of slag ring is fixedly connected with sealing baffle, the inner wall of sealing baffle slides along the inner layer of protection nozzle main body, the one end of slag ring is fixedly connected with crank rod, the crank rod is fixed with slag scraping piece, the slag scraping piece slides along the inner wall of protection nozzle main body, the utility model realizes the rotary scraping movement and moving shaking motion of slag scraping piece, enhances the slag cleaning effect and intensity, to effectively enhance the slag cleaning efficiency of protection nozzle, avoid the obstruction of welding slag, it is favorable to improve the technical effect of welding work efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of welding equipment, and in particular relates to a carbon dioxide high-temperature resistant non-stick protective nozzle. Background Technology

[0002] Carbon dioxide gas shielded welding (CO2 welding) is a welding method that uses carbon dioxide gas as a shielding gas. As a highly efficient and economical gas metal arc welding method, CO2 welding has rapidly gained popularity in automotive manufacturing, machining, steel structure, and shipbuilding industries due to its advantages such as concentrated arc energy, fast welding speed, high deposition efficiency, low cost, and suitability for all-position welding. The main structure of a CO2 welding machine includes a welding power source, wire feeding mechanism, welding torch (including a contact tip and a shielding tip, which conducts current and sprays shielding gas), gas supply system, and control system. The shielding tip, as a key component that directly contacts the welding area, plays a decisive role in welding quality and efficiency through its structural design.

[0003] To address this, Chinese Patent No. CN202780192U discloses a protective nozzle for a carbon dioxide welding torch. The protective nozzle has a two-section structure, with the gas inlet section having an outer diameter of 20 mm and an inner diameter of 17 mm, and the gas outlet section having an outer diameter of 14.5 mm and an inner diameter of 9.8 mm. The two sections are smoothly connected as one piece, and the total length of the protective nozzle is 75 mm. This design can improve the flexibility of the welding torch operation, reduce the bevel angle, save welding material, improve weld quality, and protect the welding area, thereby ensuring welding quality.

[0004] However, the aforementioned devices, such as CO2 welding machines, generate a large amount of spatter during welding operations. The protective nozzle has a simple structure, is easily contaminated with welding slag, and is inconvenient to clean and remove, which can easily cause blockages. This can affect the delivery of CO2 and the use of welding wire, thereby affecting the efficiency of welding operations. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a high-temperature resistant, non-stick carbon dioxide protective nozzle. It features a rotating scraping motion and a moving shaking motion of the scraper blade, enhancing the slag cleaning effect and strength. This effectively improves the slag removal efficiency of the protective nozzle, preventing slag blockage and improving welding efficiency. It solves the problems of existing carbon dioxide welding machines generating a large amount of spatter during welding, the simple structure of the protective nozzle making it prone to slag contamination, and the inconvenience of cleaning and clogging, which affects carbon dioxide delivery and welding wire usage, thus impacting welding efficiency.

[0006] This invention is implemented as follows: a carbon dioxide high-temperature resistant non-stick protective nozzle includes a carbon dioxide welding machine body, a welding torch, and a protective nozzle body. The protective nozzle body has a heat dissipation cavity inside, which is arranged in a ring and divides the protective nozzle body into inner and outer layers. The opening end of the heat dissipation cavity is connected to a rotating ring via a bearing. The end of the rotating ring is slidably inserted with a slag scraper ring via a guide rod. A sealing plate is fixedly connected to the inner side of the end of the slag scraper ring. The inner wall of the sealing plate slides along the inner layer of the protective nozzle body. A curved rod is fixedly connected to one end of the slag scraper ring, and a slag scraper blade is sleeved and fixed on the curved rod. The slag scraper blade slides along the inner wall of the protective nozzle body.

[0007] As a preferred embodiment of this invention, the surface of the protective nozzle body is coated with a nano-zirconia high-temperature resistant coating, and the protective nozzle body is made of aluminum alloy.

[0008] This design provides high-temperature resistance and self-lubrication, significantly reducing the adhesion between welding slag and the surface of the protective tip, thus preventing slag adhesion, and also improving the wear resistance and corrosion resistance of the protective tip.

[0009] As a preferred embodiment of this utility model, a uniformly distributed heat sink is inserted and fixed on the heat dissipation cavity, the heat sink extends through to the outer wall of the protective nozzle body, and the heat sink is a thin sheet-shaped chromium-zirconium-copper heat-conducting fin.

[0010] This design, through the cooperation of the heat dissipation cavity and heat sink, helps to increase the heat dissipation area of ​​the protective nozzle, accelerates heat dissipation, maintains the working temperature of the protective nozzle within a reasonable range, and prevents the protective nozzle from softening or deforming due to overheating, thereby ensuring welding quality and precision.

[0011] In a preferred embodiment of this invention, one end of the guide rod is fixedly connected to the other end of the slag scraper ring. Several guide rods are provided and evenly distributed in a circular array. A guide hole is provided on the rotating ring, and a limiting groove is provided on the guide hole. The other end of the guide rod slides through the guide hole into the limiting groove. A limiting slide plate is fixedly connected to the other end of the guide rod, and the limiting slide plate slides along the limiting groove.

[0012] This design improves the stability of the connection structure between the slag scraper ring and the rotating ring, making it convenient for the rotating ring to drive the slag scraper ring to rotate and perform the slag scraping and cleaning operation. It also makes it convenient to pull the slag scraper ring to move elastically and extend, enabling the slag scraper to move and vibrate linearly, thus enhancing the slag scraping effect and facilitating the rapid removal of slag. This effectively enhances the slag removal and cleaning efficiency of the protective nozzle, avoids slag blockage, and helps improve welding efficiency.

[0013] As a preferred embodiment of this utility model, a spring is fixedly connected between the ends of the limiting slide plate and the limiting slide groove, and the spring is sleeved on the guide rod.

[0014] This design facilitates the elastic extension and retraction of the scraper ring, which in turn facilitates the movement of the scraper blades, making it easier to shake off the slag.

[0015] As a preferred embodiment of this invention, the sealing plate has uniformly distributed filter holes, and the sealing plate seals the opening end of the heat dissipation cavity.

[0016] This design, with its baffle plate, helps prevent welding slag from splashing into the heat dissipation cavity, facilitates slag filtration and blocking, and is easy to use.

[0017] As a preferred embodiment of this invention, the outer wall of the rotating ring is fixedly connected with a handle.

[0018] With this setup, when it is necessary to clean the welding slag inside the protective nozzle, simply hold the handle to rotate the rotating ring, which in turn rotates the slag scraper ring and scraper blades, achieving a rotating scraping and cleaning operation of the adhering slag. Then, pull the scraper ring, causing it to elastically extend and retract on the rotating ring, which in turn moves and shakes the scraper blades, further shaking off the slag and enhancing the cleaning efficiency.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: The combination of the heat dissipation cavity and heat sink facilitates rapid heat removal, preventing overheating and deformation of the protective nozzle, thus ensuring welding quality and precision. The combination of the rotating ring, scraper ring, scraper blade, guide rod, limiting slide groove, limiting slide plate, and spring facilitates the rotational scraping motion and moving shaking motion of the scraper blade, enhancing the slag cleaning effect and strength, thereby effectively improving the slag removal efficiency of the protective nozzle, preventing slag blockage, and improving welding efficiency. Furthermore, the aluminum alloy protective nozzle with a nano-zirconia high-temperature resistant coating enhances high-temperature resistance and self-lubrication, reducing the adhesion between slag and the protective nozzle surface, enhancing wear resistance and corrosion resistance, and extending the service life of the protective nozzle. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the main structure of the protective nozzle provided in this embodiment of the utility model;

[0022] Figure 3 This is a cross-sectional structural schematic diagram provided in an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the heat dissipation cavity structure provided in an embodiment of the present invention;

[0024] Figure 5This is a schematic diagram of the slag scraper ring structure provided in an embodiment of the present invention;

[0025] Figure 6 This is provided by the embodiment of the present utility model. Figure 5 Enlarged structural diagram at point A in the middle.

[0026] In the diagram: 1. CO2 welding machine body; 101. Welding torch; 102. Protective nozzle body; 2. Heat dissipation cavity; 201. Heat sink; 3. Rotary ring; 301. Handle; 302. Limiting slide groove; 303. Spring; 304. Guide hole; 4. Slag scraper ring; 401. Guide rod; 402. Limiting slide plate; 5. Slag scraper; 501. Crank rod; 6. Sealing plate. Detailed Implementation

[0027] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0028] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] refer to Figures 1 to 6 As shown in the figure, the present invention provides a carbon dioxide high-temperature resistant non-stick protective nozzle, including a carbon dioxide welding machine body 1, a welding torch 101, and a protective nozzle body 102. The protective nozzle body 102 has a heat dissipation cavity 2 inside, which is arranged in a ring and divides the protective nozzle body 102 into inner and outer layers. The opening end of the heat dissipation cavity 2 is connected to a rotating ring 3 through a bearing. The end of the rotating ring 3 is slidably inserted with a slag scraper ring 4 through a guide rod 401. A sealing plate 6 is fixedly connected to the inner side of the end of the slag scraper ring 4. The inner wall of the sealing plate 6 slides along the inner layer of the protective nozzle body 102. A curved rod 501 is fixedly connected to one end of the slag scraper ring 4. A slag scraper 5 is sleeved and fixed on the curved rod 501. The slag scraper 5 slides along the inner wall of the protective nozzle body 102.

[0030] Specifically, the surface of the protective nozzle body 102 is coated with a nano-zirconia high-temperature resistant coating, and the protective nozzle body 102 is made of aluminum alloy.

[0031] The above solution has high temperature resistance and self-lubricating properties, which can significantly reduce the adhesion between welding slag and the surface of the protective tip, thus helping to prevent slag adhesion. At the same time, it can also improve the wear resistance and corrosion resistance of the protective tip.

[0032] Specifically, a uniformly distributed heat sink 201 is inserted and fixed on the heat dissipation cavity 2. The heat sink 201 extends through to the outer wall of the protective nozzle body 102. The heat sink 201 is a thin sheet of chromium zirconium copper heat-conducting fin.

[0033] By adopting the above scheme, the cooperation between the heat dissipation cavity 2 and the heat sink 201 helps to increase the heat dissipation area of ​​the protective nozzle, accelerate the heat dissipation, maintain the working temperature of the protective nozzle within a reasonable range, and prevent the protective nozzle from softening or deforming due to overheating, thereby ensuring welding quality and precision.

[0034] Specifically, one end of the guide rod 401 is fixedly connected to the other end of the scraper ring 4. Several guide rods 401 are provided and evenly distributed in a ring array. The rotating ring 3 has a guide hole 304 and a limiting groove 302. The other end of the guide rod 401 slides through the guide hole 304 into the limiting groove 302. The other end of the guide rod 401 is fixedly connected to the limiting slide plate 402, and the limiting slide plate 402 slides along the limiting groove 302.

[0035] The above-mentioned scheme improves the stability of the connection structure between the slag scraper ring 4 and the rotating ring 3. This allows the rotating ring 3 to drive the slag scraper ring 4 to rotate, enabling the slag scraper blade 5 to perform a rotating scraping and cleaning operation. It also allows the slag scraper ring 4 to be pulled elastically to move, enabling the slag scraper blade 5 to move linearly and vibrate. This enhances the slag scraping effect and facilitates the rapid removal of slag, thereby effectively improving the slag removal efficiency of the protective nozzle, preventing slag blockage, and improving welding efficiency.

[0036] Specifically, a spring 303 is fixedly connected between the ends of the limiting slide plate 402 and the limiting slide groove 302, and the spring 303 is sleeved on the guide rod 401.

[0037] The above scheme facilitates the elastic extension and retraction of the scraper ring 4, which in turn facilitates the movement of the scraper blade 5, making it easier to shake off the slag.

[0038] Specifically, the sealing plate 6 has evenly distributed filter holes, and the sealing plate 6 seals the opening end of the heat dissipation cavity 2.

[0039] By adopting the above scheme, the baffle plate 6 helps to prevent welding slag from splashing into the heat dissipation cavity 2, facilitates the slag filtering and blocking, and is easy to use.

[0040] Specifically, a handle 301 is fixedly connected to the outer wall of the rotating ring 3.

[0041] Using the above solution, when it is necessary to clean the welding slag inside the protective nozzle, the handle 301 can be held to drive the rotating ring 3 to rotate, which in turn drives the scraper ring 4 and the scraper blade 5 to rotate, realizing the rotational scraping and cleaning operation of the adhering slag. Then, the scraper ring 4 is pulled to make the scraper ring 4 elastically extend and retract on the rotating ring 3, which in turn drives the scraper blade 5 to move and shake, further shaking off the slag and further enhancing the cleaning efficiency.

[0042] The working principle of this utility model:

[0043] During use, the heat generated during welding is quickly conducted to the surface through the heat dissipation cavity 2 and the heat dissipation fins 201, increasing the heat dissipation area and allowing the heat to be quickly dissipated into the surrounding environment, preventing the protective nozzle from softening and deforming due to high temperature. When it is necessary to clean the welding slag, hold the handle 301 on the rotating ring 3 to rotate it. The rotating ring 3 drives the scraper ring 4 and scraper blade 5 to rotate together through the guide rod 401. The scraper blade 5 slides along the inner wall of the protective nozzle to scrape off the adhered welding slag. Pulling the scraper ring 4 causes the guide rod 401 to slide in the limiting groove 302, which, together with the spring 303, enables the scraper ring 4 to elastically extend and retract, causing the scraper blade 5 to shake and dislodge residual welding slag, achieving efficient cleaning. This effectively enhances the slag removal and cleaning efficiency of the protective nozzle, avoids welding slag blockage, and helps improve welding work efficiency.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carbon dioxide high-temperature resistant non-stick protective nozzle, comprising a carbon dioxide welding machine body (1), a welding torch (101), and a protective nozzle body (102), characterized in that: The protective nozzle body (102) has a heat dissipation cavity (2) inside. The heat dissipation cavity (2) is arranged in a ring and divides the protective nozzle body (102) into inner and outer layers. The opening end of the heat dissipation cavity (2) is connected to a rotating ring (3) through a bearing. The end of the rotating ring (3) is slidably inserted with a scraper ring (4) through a guide rod (401). A sealing plate (6) is fixedly connected to the inner side of the end of the scraper ring (4). The inner wall of the sealing plate (6) slides along the inner layer of the protective nozzle body (102). A crank rod (501) is fixedly connected to one end of the scraper ring (4). A scraper blade (5) is sleeved and fixed on the crank rod (501). The scraper blade (5) slides along the inner wall of the protective nozzle body (102).

2. The carbon dioxide high-temperature resistant non-stick protective nozzle as described in claim 1, characterized in that: The surface of the protective nozzle body (102) is coated with a nano-zirconia high-temperature resistant coating, and the protective nozzle body (102) is made of aluminum alloy.

3. The carbon dioxide high-temperature resistant non-stick protective nozzle as described in claim 1, characterized in that: The heat dissipation cavity (2) is fixed with uniformly distributed heat dissipation fins (201), which penetrate to the outer wall of the protective nozzle body (102). The heat dissipation fins (201) are thin chromium zirconium copper heat-conducting fins.

4. The carbon dioxide high-temperature resistant non-stick protective nozzle as described in claim 1, characterized in that: One end of the guide rod (401) is fixedly connected to the other end of the scraper ring (4). The guide rod (401) is provided in a plurality of them and is evenly distributed in a ring array. The rotating ring (3) is provided with a guide hole (304). A limiting groove (302) is provided on the guide hole (304). The other end of the guide rod (401) slides through the guide hole (304) into the limiting groove (302). The other end of the guide rod (401) is fixedly connected to a limiting slide plate (402). The limiting slide plate (402) slides along the limiting groove (302).

5. The carbon dioxide high-temperature resistant non-stick protective nozzle as described in claim 4, characterized in that: A spring (303) is fixedly connected between the ends of the limiting slide plate (402) and the limiting slide groove (302), and the spring (303) is sleeved on the guide rod (401).

6. The carbon dioxide high-temperature resistant non-stick protective nozzle as described in claim 1, characterized in that: The sealing plate (6) has uniformly distributed filter holes, and the sealing plate (6) seals the opening end of the heat dissipation cavity (2).

7. The carbon dioxide high-temperature resistant non-stick protective nozzle as described in claim 1, characterized in that: The outer wall of the rotating ring (3) is fixedly connected to a handle (301).

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