Single-gas-path water-cooling fine plasma cutting gun
By optimizing the structure of the single-air-path water-cooled precision plasma cutting gun and using only air as the gas source, the problems of rough cutting surface and insufficient perpendicularity were solved, achieving a high-efficiency and low-cost cutting effect.
Patent Information
- Application Number
- CN202422666617.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-11-01
AI Technical Summary
In existing technologies, single-air-path cutting guns produce rough cut surfaces and insufficient perpendicularity when cutting thick plates, and require the use of two types of gas, resulting in high costs.
A single-air-path water-cooled precision plasma cutting gun is designed, which adopts a structure of protective cap, nozzle, fixed cover and nozzle seat. The gas flow is optimized through multiple air outlets. Combined with vortex ring and ion gas inlet, it uses only air as the gas source to achieve a smooth cutting surface and a perpendicularity of less than 3°.
It achieves a smooth cutting surface with a perpendicularity of less than 3°, reduces gas costs, simplifies gas management and operation procedures, improves equipment reliability and stability, and extends equipment life.
Smart Images
Figure CN223699613U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of plasma cutting, especially to a single gas path water cooling fine plasma cutting gun. BACKGROUND
[0002] Plasma cutting technology occupies an important position in modern industry with its high efficiency, precision and wide application range, and with the continuous progress of technology, its application field and performance are also expanding and improving. Plasma cutting is a heat generated by high-temperature plasma arc that makes the metal at the cutting edge of the workpiece locally melt or evaporate, and then the molten metal is blown away by the momentum of high-speed plasma, thereby forming a cutting. Plasma cutting can also control the cutting depth by adjusting the gas pressure and flow.
[0003] In order to cut thicker plates for a long time, water-cooled guns are used for cutting in the prior art. After cutting the workpiece with a general single gas path cutting gun, the surface roughness of the cutting surface is more than 5°, and there is a lot of slag. In order to make the cut plate surface smooth and the cutting surface perpendicularity within 3°, and reduce the slag, a fine plasma cutting gun is often used. At present, most of the fine plasma water-cooled cutting guns need to use two kinds of gas for cutting, generally air for protective gas and oxygen for ion gas, which leads to an increase in the cost of practical cutting guns, cutting machines and gas sources during processing in the factory. UTILITY MODEL CONTENT
[0004] The utility model aims at the defects in the prior art to provide a single gas path water cooling fine plasma cutting gun, which achieves smooth cutting surface and cutting surface perpendicularity less than 3°, and only needs to use air as the gas source, adapts to most water-cooled cutting machines on the market, and reduces the use cost.
[0005] In order to achieve the above purpose, the utility model adopts the technical scheme of a single gas path water cooling fine plasma cutting gun, which comprises a protective cap, a nozzle, a fixing cover and a nozzle seat. The fixing cover is arranged outside the nozzle seat, the protective cap is installed on the fixing cover and covers the nozzle, and the nozzle is arranged on the nozzle seat. The front end of the nozzle is provided with a nozzle gas outlet. The protective cap is provided with a protective cap gas outlet, a protective cap surface gas outlet and a protective gas inlet. The protective cap gas outlet is matched with the nozzle gas outlet in position.
[0006] Further, a vortex ring gas outlet and an ion gas inlet are also provided, and the protective gas inlet is provided with three small holes.
[0007] Further, the three small holes of the protective gas inlet are all 1.2mm in diameter.
[0008] Further, a vortex ring is arranged inside the nozzle seat.
[0009] Further, an electrode and an air inlet pipe are arranged behind the vortex ring and the nozzle seat.
[0010] Further, an ion gas passing path is arranged at the rear end of the vortex ring.
[0011] Further, a protective gas passing path is arranged on the protective gas inlet orifice.
[0012] By comprising a protective cap, a nozzle, a fixing cover and a nozzle seat; the fixing cover is arranged outside the nozzle seat, the protective cap is installed on the fixing cover and covers the nozzle, the nozzle is arranged on the nozzle seat; the front end of the nozzle is provided with a nozzle gas outlet orifice; the protective cap is provided with a protective cap gas outlet orifice, a protective cap surface gas outlet orifice and a protective gas inlet orifice; the protective cap gas outlet orifice is matched with the nozzle gas outlet orifice in position, so that the cutting surface is smooth and the perpendicularity of the cutting surface is less than 3°, and only air is used as the gas source, which is suitable for most water-cooled cutting machines on the market and reduces the use cost. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0014] Figure 1 It is a single gas path water-cooled fine plasma cutting torch head structure schematic diagram;
[0015] Figure 2 It is a single gas path water-cooled fine plasma cutting torch gas path diagram;
[0016] Reference signs:
[0017] Protective cap 1, protective cap gas outlet orifice 1-1, protective cap surface gas outlet orifice 1-2, protective gas inlet orifice 1-3, nozzle 2, nozzle gas outlet orifice 2-1, vortex ring gas outlet orifice 2-2, ion gas inlet orifice 2-3, fixing cover 3, nozzle seat 4, vortex ring 5, ion gas passing path 6, protective gas passing path 7, electrode 8, air inlet pipe 9. DETAILED DESCRIPTION
[0018] Clearly and completely describe the technical scheme in the embodiments of the utility model in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments.
[0019] In the description of the utility model, it needs to be explained that the orientation or position relationship of "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicated in the drawings is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and is not to indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the utility model.
[0020] A single gas path water-cooled fine plasma cutting gun, as shown in Figure 1 , 2 , including protective cap 1, nozzle 2, fixed cover 3 and nozzle seat 4, the fixed cover 3 is arranged outside the nozzle seat 4, the protective cap 1 is installed on the fixed cover 3 and covers the nozzle 2, the nozzle 2 is arranged on the nozzle seat 4, the front end of the nozzle 2 is provided with nozzle gas outlet orifice 2-1, the protective cap 1 is provided with protective cap gas outlet orifice 1-1, protective cap surface gas outlet orifice 1-2 and protective gas inlet orifice 1-3, the protective cap gas outlet orifice 1-1 is matched with the nozzle gas outlet orifice 2-1.
[0021] Specifically, by setting multiple gas outlet orifices on the protective cap, including protective cap gas outlet orifice 1-1, protective cap surface gas outlet orifice 1-2, and nozzle seat and nozzle, the gas flow path and distribution are optimized, so that the gas can act more effectively on the workpiece during cutting, reducing heat accumulation and oxidation of the cutting surface, thereby realizing a more smooth cutting surface and smaller cutting surface perpendicularity, the compact design of the protective cap, nozzle, fixed cover and nozzle seat and the like not only reduces the overall volume and weight of the cutting gun, but also improves the structural strength and durability, so that the cutting gun can maintain stable performance in long-time and high-intensity cutting operation, prolonging the service life of the equipment, since only air is used as the cutting gas, the scheme significantly reduces the gas cost. This can bring significant economic benefits to factories that require a large amount of cutting operation, and also simplifies gas management and operation process, not only reducing the operation difficulty, but also reducing the possible failure caused by improper gas mixing, improving the reliability and stability of the equipment, at the same time, the single gas path design also makes the maintenance and maintenance of the equipment more convenient.
[0022] As a preferred embodiment of the above, as shown in Figure 2 , a vortex ring gas outlet orifice 2-2 and an ion gas inlet orifice 2-3 are also provided, and the protective gas inlet orifice 1-3 is provided with three small holes.
[0023] Specifically, a spiral-shaped gas flow can be generated through the vortex ring gas outlet port 2-2, which helps to more effectively remove metal slag and oxides generated during the cutting process, thereby improving the smoothness and perpendicularity of the cutting surface. At the same time, the vortex gas can also enhance the stability of the plasma arc, reduce fluctuations during the cutting process, and further improve the cutting quality. The introduction of the ion gas inlet port 2-3 helps to enhance the cutting ability of the plasma arc. Ion gas is usually selected to have high ionization and high thermal conductivity, such as oxygen or nitrogen, which can more effectively convert electrical energy into heat energy, thereby accelerating the melting and evaporation process of the metal. The protective gas inlet port 1-3 is set as three small holes, which helps to more evenly distribute the protective gas and reduce oxidation and heat accumulation during the cutting process. At the same time, the design of the three small holes also provides a larger gas flow adjustment range, allowing the operator to flexibly adjust the flow and pressure of the protective gas according to the specific cutting requirements and workpiece materials to achieve the best cutting effect.
[0024] As a preferred embodiment of the above, as shown in Figure 2 The three small holes of the protective gas inlet port 1-3 each have a diameter of 1.2 mm.
[0025] Specifically, by using three small holes with a diameter of 1.2 mm, the ratio of protective gas to ion gas is adjusted to the optimal cutting ratio.
[0026] As a preferred embodiment of the above, as shown in Figure 2 A vortex ring 5 is also provided, which is arranged inside the nozzle seat 4.
[0027] Specifically, by also providing a vortex ring 5 arranged inside the nozzle seat 4, a spiral-shaped gas flow is generated in cooperation with the vortex ring gas outlet port 2-2.
[0028] As a preferred embodiment of the above, as shown in Figure 2 An electrode 8 and an air inlet pipe 9 are also provided, which are arranged behind the vortex ring 5 and the nozzle seat 4.
[0029] Specifically, a high-temperature plasma gas is generated by forming an arc between the electrode 8 and the workpiece. By arranging the electrode behind the vortex ring and the nozzle seat, it can be ensured that the plasma arc can pass through the vortex ring and the nozzle stably after being formed, thereby achieving precise cutting of the workpiece.
[0030] As a preferred embodiment of the above, as shown in Figure 1 The rear end of the vortex ring 5 is provided with an ion gas passage 6.
[0031] As a preferred embodiment of the above, as shown inFigure 1 As shown, the protective gas is arranged on the protective gas inlet orifice 1-3 through a path 7.
[0032] Specifically, by fixing the gun head on the support, the gun wire is connected to the machine. When starting work, air enters the gun head through the air inlet pipe, and a part of the gas is discharged through the nozzle seat 4, the fixed cover 3, the protective cap 1, and the nozzles of the protective cap, to form the protective gas; a part of the gas is discharged through the vortex ring, to form the spiral gas, pass through the electrode 8, the nozzle 2, and the nozzles of the nozzle, to form the ion gas.
[0033] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A single-air-path water-cooled precision plasma cutting torch, characterized in that: Includes a protective cap (1), a nozzle (2), a fixing cover (3), and a nozzle seat (4); The fixing cover (3) is disposed on the outside of the nozzle seat (4), and the protective cap (1) is installed on the fixing cover (3) and covers and protects the nozzle (2). The nozzle (2) is disposed on the nozzle seat (4). The nozzle (2) is provided with a nozzle outlet (2-1) at its front end. The protective cap (1) is provided with a protective cap vent (1-1), a protective cap surface vent (1-2), and a protective air inlet (1-3). The position of the air outlet (1-1) of the protective cap is adapted to the position of the air outlet (2-1) of the nozzle.
2. The single-air-path water-cooled precision plasma cutting gun according to claim 1, characterized in that, It is also provided with a vortex ring outlet (2-2) and an ion gas inlet (2-3), and the protective gas inlet (1-3) is provided with three small holes.
3. The single-air-path water-cooled precision plasma cutting torch according to claim 1, characterized in that, The diameter of the three small holes in the protective gas inlet (1-3) is 1.2 mm.
4. The single-air-path water-cooled precision plasma cutting gun according to claim 1, characterized in that, A vortex ring (5) is also provided, which is located inside the nozzle seat (4).
5. The single-air-path water-cooled precision plasma cutting gun according to claim 4, characterized in that, An electrode (8) and an air intake pipe (9) are also provided, with the electrode (8) and the air intake pipe (9) respectively located behind the vortex ring (5) and the nozzle seat (4).
6. The single-air-path water-cooled precision plasma cutting gun according to claim 2, characterized in that, The vortex ring (5) has an ion gas passage path (6) at its rear end.
7. The single-air-path water-cooled precision plasma cutting gun according to claim 2, characterized in that, The protective gas path (7) is set on the protective gas inlet (1-3).