Nozzle structure of plasma cutting gun

Abstract

The utility model discloses a plasma cutting gun nozzle structure, which belongs to the technical field of plasma cutting gun nozzles and comprises a connecting and fixing block, a first anti-sputtering baffle, a sliding rod, a second anti-sputtering baffle and an adjusting component. Therefore, the multiple meshing tooth grooves can drive the driving gears on the two sides to rotate in the same direction at the same time through meshing, the driving gears on the two sides rotate to enable the sliding rods on the two sides to move upwards or downwards, then a first anti-sputtering baffle can be adjusted to move upwards or downwards, and stretching or contracting can be adjusted according to the shape of a cutting piece; and through the arrangement of a plurality of first pressure relief grooves and second pressure relief grooves, when the first anti-sputtering baffle extends outwards or contracts inwards, the first pressure relief grooves and the second pressure relief grooves can coincide in the cutting process, and therefore the situation that the pressure in the first anti-sputtering baffle is too high in the cutting process can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of plasma cutting gun nozzles, and specifically relates to a plasma cutting gun nozzle structure. Background Art

[0002] Plasma cutting machines can cut various metals that are difficult to cut by oxygen cutting with different working gases. Especially for non-ferrous metals (aluminum, copper, titanium, nickel), the cutting effect is better. Its main advantages are that when cutting metals with a small thickness, the plasma cutting speed is fast. Especially when cutting thin sheets of ordinary carbon steel, the speed can reach 5 to 6 times that of the oxygen cutting method, the cutting surface is smooth, the thermal deformation is small, and there is almost no heat-affected zone. The working gas that can be used in plasma cutting machines (the working gas is the conductive medium of the plasma arc, the heat carrier, and at the same time, it is necessary to remove the molten metal in the cut) has an obvious impact on the cutting characteristics, cutting quality, and speed of the plasma arc. Commonly used plasma arc working gases include argon, hydrogen, nitrogen, oxygen, air, water vapor, and some mixed gases. Plasma cutting machines are widely used in various industries such as automobiles, locomotives, pressure vessels, chemical machinery, nuclear industry, general machinery, engineering machinery, and steel structures.

[0003] When the plasma cutting gun nozzle cuts materials or parts, the high-temperature plasma beam melts the materials. However, under the impact of the plasma beam, scattered and splashing cutting waste will be generated, which may scald the staff. To solve this problem, for example, the plasma cutting gun nozzle structure disclosed in the Chinese utility model patent CN219924849U includes a connecting and fixing block. A cutting gun connecting pipe is provided on the connecting and fixing block. The cutting gun connecting pipe and the connecting and fixing block are integrally provided. The connecting and fixing block is provided with a plasma cutting gun nozzle at one end far from the cutting gun connecting pipe. The plasma cutting gun nozzle and the connecting and fixing block are integrally provided. It also includes a second connecting thread. The second connecting thread is provided on the outer surface of the plasma cutting gun nozzle. The second connecting thread and the plasma cutting gun nozzle are integrally provided. A splash-proof baffle is provided on the second connecting thread.

[0004] Although the above-mentioned prior art can block the scattered and splashing cutting waste, this splash-proof baffle can only cut plate-shaped parts. When facing the cutting of tubular parts, the splash-proof baffle cannot completely block the splashing cutting waste, resulting in limited use range. Summary of the Utility Model

[0005] The purpose of this part is to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, the abstract of the specification, and the name of the utility model of this application to avoid obscuring the purpose of this part, the abstract of the specification, and the name of the utility model. However, such simplifications or omissions cannot be used to limit the scope of the present utility model.

[0006] To solve the problem that the anti-sputtering baffle in the above-mentioned background art can only cut plate-shaped parts, and when facing tubular parts for cutting, the anti-sputtering baffle cannot completely block the sputtered cutting waste, resulting in a limited range of use, the present utility model adopts the following technical solutions.

[0007] A plasma cutting torch nozzle structure includes a connection fixing block installed on the outer wall of a high-temperature resistant nozzle. The outer wall of the high-temperature resistant nozzle near the upper end is provided with a first external thread, and the connection fixing block is threadedly connected to the first external thread. The bottom of the connection fixing block is provided with a first anti-sputtering baffle. Symmetrically arranged sliding holes are provided at the upper end of the first anti-sputtering baffle. Sliding rods are slidably connected inside the two sliding holes. The bottom of the sliding rod is fixedly connected with a limiting plate, and the limiting plate limits the extending length of the sliding rod. The two sliding rods pass through the connection fixing block and a second anti-sputtering baffle. Second external threads are provided on the outer walls of the two sliding rods near the upper end. A second anti-sputtering baffle is arranged outside the first anti-sputtering baffle. A semi-circular groove is provided at the bottom of the second anti-sputtering baffle. An adjusting assembly is installed at the upper end of the connection fixing block. The adjusting assembly enables the two sliding rods to move upward or downward to drive the first anti-sputtering baffle to move upward or downward inside the cavity of the second anti-sputtering baffle.

[0008] Preferably, a plurality of second pressure relief grooves are provided on the outer wall of the first anti-sputtering baffle, and a plurality of first pressure relief grooves are provided on the outside of the second anti-sputtering baffle. The central vertical line of each first pressure relief groove coincides with that of the second pressure relief groove.

[0009] Preferably, second triangular baffles are fixedly connected to the inner wall of the second anti-sputtering baffle at each first pressure relief groove.

[0010] Preferably, triangular slots are symmetrically provided at the bottom of each second triangular baffle. First triangular baffles are fixedly connected to the inner wall of the first anti-sputtering baffle at each second pressure relief groove symmetrically. Each first triangular baffle extends beyond the upper end of the first anti-sputtering baffle and is slidably connected to the inside of the triangular slot.

[0011] Preferably, return springs are sleeved on the outer walls of the two sliding rods between the second anti-sputtering baffle and the connection fixing block.

[0012] Preferably, a cavity is provided at the bottom of the second anti-sputtering baffle, and the first anti-sputtering baffle is slidably connected to the inside of the cavity.

[0013] Preferably, the socket component includes an adjusting nut, engaging grooves, and a driving gear. Symmetrical driving gears are rotatably connected to the upper end of the connecting fixed block. A threaded hole is provided through the upper end of the driving gear, and the threaded hole is threadedly connected to the second external thread. An adjusting nut is rotatably connected to the upper end of the connecting fixed block. A plurality of engaging grooves are provided on the inner wall of the adjusting nut near the bottom, and the plurality of engaging grooves engage with the driving gears on both sides.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By rotating the adjusting nut in the provided adjusting component, the plurality of engaging grooves can drive the driving gears on both sides to rotate simultaneously in the same direction through engagement. The rotation of the driving gears on both sides causes the sliding rods on both sides to move upward or downward, and further enables the first anti-sputtering baffle to move upward or downward, and further can adjust the extension or contraction according to the shape of the cutting piece.

[0016] 2. By providing a plurality of first pressure relief grooves and second pressure relief grooves, it is possible to coincide during cutting when the first anti-sputtering baffle extends outward or contracts inward, thereby avoiding excessive pressure inside the first anti-sputtering baffle during cutting.

[0017] 3. By providing a plurality of second triangular baffles and the first triangular baffle, it is not easy for the cutting waste to fly out from the first pressure relief grooves and the second pressure relief grooves, so that the cutting waste flying out can be reduced while ensuring pressure relief. By inserting the first triangular baffle into the internal triangular slot, the flying out of the cutting waste can be reduced when the first anti-sputtering baffle slides. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a plasma cutting torch nozzle in the present utility model;

[0019] Figure 2 It is a schematic assembled structure diagram of the first anti-sputtering baffle and the second anti-sputtering baffle in the present utility model;

[0020] Figure 3 It is a schematic structural diagram of the first anti-sputtering baffle and the second anti-sputtering baffle in the present utility model;

[0021] Figure 4 It is a schematic cross-sectional structure diagram of the fixed connection block and the first anti-sputtering baffle in the present utility model;

[0022] Figure 5 It is a schematic structural diagram of the adjusting nut in the present utility model.

[0023] The corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0024] 100, High-temperature nozzle; 101, First external thread;

[0025] 200, Connecting and fixing block; 201, First anti-sputtering baffle; 202, First pressure relief groove; 203, Second pressure relief groove; 204, First triangular baffle; 205, Triangular slot; 206, Second anti-sputtering baffle; 207, Second triangular baffle; 208, Sliding rod; 209, Return spring; 210, Driving gear; 211, Sliding hole; 212, Limiting plate; 213, Adjusting nut; 214, Engaging tooth groove; 215, Semi-circular groove; 216, Second external thread. Detailed implementation manner

[0026] In order to make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings of the specification.

[0027] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0028] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it a separate or alternative embodiment that mutually excludes other embodiments. The present utility model provides the following embodiments.

[0029] As Figure 1 shown, it is a schematic structural diagram of a plasma cutting torch nozzle according to a preferred embodiment of the present utility model. The plasma cutting torch nozzle structure of this embodiment includes a connecting and fixing block 200 installed on the outer wall of the high-temperature nozzle 100. The outer wall of the high-temperature nozzle 100 near the upper end is provided with a first external thread 101. The connecting and fixing block 200 is threadedly connected to the first external thread 101. A first anti-sputtering baffle 201 is installed at the bottom of the connecting and fixing block 200. In this embodiment, the first anti-sputtering baffle 201 is used to block the cutting waste generated by the high-temperature nozzle 100 during cutting.

[0030] As Figure 2As shown in the figure, it is a schematic diagram of the assembly structure of the first anti-sputtering baffle and the second anti-sputtering baffle in this embodiment. The second anti-sputtering baffle 206 is arranged outside the first anti-sputtering baffle 201. A cavity is arranged at the bottom of the second anti-sputtering baffle 206. The first anti-sputtering baffle 201 slides up and down inside the cavity. A plurality of second pressure relief grooves 203 are arranged on the outer wall of the first anti-sputtering baffle 201. A plurality of first pressure relief grooves 202 are arranged outside the second anti-sputtering baffle 206. The central vertical line of each first pressure relief groove 202 coincides with that of the second pressure relief groove 203. A semi-circular groove 215 is arranged at the bottom of the second anti-sputtering baffle 206. In this embodiment, when cutting a pipe fitting, the first anti-sputtering baffle 201 is retracted inside the second anti-sputtering baffle 206, so that the semi-circular groove 215 contacts the outer wall of the pipe fitting, thereby being able to block the cutting waste when cutting the pipe fitting. Through the plurality of first pressure relief grooves 202 and second pressure relief grooves 203, when the first anti-sputtering baffle 201 extends outwards or retracts inwards, the cutting can be made to coincide, thereby being able to avoid excessive pressure inside the first anti-sputtering baffle 201 during cutting.

[0031] As Figure 3 shown in the figure, it is a schematic diagram of the structure of the first anti-sputtering baffle and the second anti-sputtering baffle in this embodiment. At each first pressure relief groove 202, a second triangular baffle 207 is fixedly connected to the inner wall of the second anti-sputtering baffle 206. Triangular slots 205 are symmetrically arranged at the bottom of each second triangular baffle 207. At each second pressure relief groove 203, a symmetrically arranged first triangular baffle 204 is fixedly connected to the inner wall of the first anti-sputtering baffle 201. Each first triangular baffle 204 extends beyond the upper end of the first anti-sputtering baffle 201 and is slidably connected to the inside of the triangular slot 205. In this embodiment, through the arrangement of the plurality of second triangular baffles 207 and the first triangular baffles 204, the cutting waste is not easily ejected outwards from the first pressure relief grooves 202 and the second pressure relief grooves 203, thereby being able to reduce the ejection of the cutting waste outwards while ensuring pressure relief. By inserting the first triangular baffle 204 into the inside of the triangular slot 205, the ejection of the cutting waste can be reduced when the first anti-sputtering baffle 201 slides.

[0032] As Figure 4As shown in the figure, it is a schematic cross-sectional structure diagram of the fixed connection block and the first anti-sputtering baffle in this embodiment. Symmetrically arranged sliding holes 211 are provided at the upper end of the first anti-sputtering baffle 201. Sliding rods 208 are slidably connected inside the two sliding holes 211. A limiting plate 212 is fixedly connected to the bottom of the sliding rod 208. The limiting plate 212 limits the extending length of the sliding rod 208. The two sliding rods 208 pass through the connecting fixed block 200 and the second anti-sputtering baffle 206. Second external threads 216 are provided on the outer walls of the two sliding rods 208 near the upper end. Symmetric driving gears 210 are rotatably connected to the upper end of the connecting fixed block 200. Through holes are provided at the upper ends of the driving gears 210, and the threaded holes are threadedly connected to the second external threads 216. In this embodiment, when the two driving gears 210 rotate, the two sliding rods 208 move upward or downward, and thus the first anti-sputtering baffle 201 can be adjusted to move upward or downward.

[0033] As Figure 4 shown, return springs 209 are sleeved on the outer walls of the two sliding rods 208 between the second anti-sputtering baffle 206 and the connecting fixed block 200. In this embodiment, through the arrangement of the return springs 209, pressure can be applied according to actual needs during cutting, so that the second anti-sputtering baffle 206 and the first anti-sputtering baffle 201 move on the outer walls of the sliding rods 208 and compress the return springs 209, making the adjustment more convenient.

[0034] As Figure 5 shown, it is a schematic structural diagram of the adjusting cap in this embodiment. An adjusting cap 213 is rotatably connected to the upper end of the connecting fixed block 200. A plurality of meshing tooth grooves 214 are provided on the inner wall of the adjusting cap 213 near the bottom. The plurality of meshing tooth grooves 214 mesh with the two driving gears 210. In this embodiment, by rotating the adjusting cap 213, the plurality of meshing tooth grooves 214 can drive the two driving gears 210 to rotate in the same direction simultaneously through meshing, and thus the two sliding rods 208 can move upward or downward.

[0035] It should be noted that the above-mentioned adjusting cap 213, meshing tooth grooves 214 and driving gears 210 are adjusting components in this embodiment. The socketing components include, but are not limited to, the adjusting cap 213, meshing tooth grooves 214 and driving gears 210. As long as the components that can make the two sliding rods 208 move upward or downward can be applied to this embodiment.

[0036] The above content is a further detailed description of the present utility model in combination with specific embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, which should all be regarded as falling within the protection scope determined by the claims submitted for the present utility model.

Claims

1. A plasma cutting torch nozzle structure, comprising a connection fixing block (200) mounted on the outer wall of a high-temperature resistant nozzle tube (100), the outer wall of the high-temperature resistant nozzle tube (100) near the upper end is provided with a first external thread (101), and the connection fixing block (200) is threadedly connected to the first external thread (101), characterized in that, At the bottom of the connection fixing block (200), a first anti-sputtering baffle (201) is provided. At the upper end of the first anti-sputtering baffle (201), symmetrically arranged sliding holes (211) are provided. Inside the two sliding holes (211), a sliding rod (208) is slidably connected. At the bottom of the sliding rod (208), a limiting plate (212) is fixedly connected. The limiting plate (212) limits the extending length of the sliding rod (208). The two sliding rods (208) pass through the connection fixing block (200) and the second anti-sputtering baffle (206). On the outer wall of the two sliding rods (208) near the upper end, a second external thread (216) is provided. Outside the first anti-sputtering baffle (201), a second anti-sputtering baffle (206) is provided. At the bottom of the second anti-sputtering baffle (206), a semi-circular groove (215) is provided. At the upper end of the connection fixing block (200), an adjusting assembly is installed. The adjusting assembly enables the two sliding rods (208) to move upward or downward, driving the first anti-sputtering baffle (201) to move upward or downward inside the cavity of the second anti-sputtering baffle (206).

2. The plasma cutting torch nozzle structure according to claim 1, characterized in that, On the outer wall of the first anti-sputtering baffle (201), a plurality of second pressure relief grooves (203) are provided. Outside the second anti-sputtering baffle (206), a plurality of first pressure relief grooves (202) are provided. The central vertical line of each first pressure relief groove (202) coincides with that of the second pressure relief groove (203).

3. The plasma cutting torch nozzle structure according to claim 2, characterized in that, On the inner wall of the second anti-sputtering baffle (206) at each first pressure relief groove (202), a second triangular baffle (207) is fixedly connected.

4. The plasma cutting torch nozzle structure according to claim 3, characterized in that, At the bottom of each second triangular baffle (207), symmetrically arranged triangular slots (205) are provided. On the inner wall of the first anti-sputtering baffle (201) at each second pressure relief groove (203), symmetrically arranged first triangular baffles (204) are fixedly connected. Each first triangular baffle (204) extends beyond the upper end of the first anti-sputtering baffle (201) and is slidably connected to the inside of the triangular slot (205).

5. The plasma cutting torch nozzle structure according to claim 4, characterized in that, On the outer wall of the two sliding rods (208) between the second anti-sputtering baffle (206) and the connection fixing block (200), a return spring (209) is sleeved.

6. The plasma cutting torch nozzle structure according to claim 5, characterized in that, At the bottom of the second anti-sputtering baffle (206), a cavity is provided. The first anti-sputtering baffle (201) is slidably connected to the inside of the cavity.

7. The plasma cutting torch nozzle structure according to claim 6, wherein, The sleeving assembly includes an adjusting cap (213), meshing tooth grooves (214), and a driving gear (210). Symmetric driving gears (210) are rotatably connected to the upper end of the connection fixing block (200). At the upper end of the driving gear (210), a through threaded hole is provided. The threaded hole is threadedly connected to the second external thread (216). An adjusting cap (213) is rotatably connected to the upper end of the connection fixing block (200). On the inner wall of the adjusting cap (213) near the bottom, a plurality of meshing tooth grooves (214) are provided. The plurality of meshing tooth grooves (214) mesh with the two driving gears (210).

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