A manufacturing mold for a plasma head and a processing method

Abstract

The application provides a manufacturing mold and processing method of a plasma head, and belongs to the technical field of plasma head manufacturing. The mold comprises a mounting structure, one end of the mounting structure is mounted on a lathe, a positioning assembly is arranged on the side of the mounting structure away from the lathe, the positioning assembly comprises an inner tube positioning assembly, the inner tube positioning assembly comprises a positioning column coaxially arranged with the mounting structure and having a smaller diameter than the mounting structure, and an inner tube is sleeved on the positioning column, the positioning column is provided with a first fixing assembly on the side away from the mounting structure, the first fixing assembly is used for coaxially arranging and connecting the inner tube and the positioning column, an outer tube positioning assembly at least comprises a first adjusting assembly, an outer tube is sleeved on the inner tube, the first adjusting assembly is used for adjusting the position of the outer tube in the radial direction of the outer tube and fixing the outer tube when the outer tube is coaxial with the inner tube, the scheme can guarantee that the inner tube and the outer tube are coaxially arranged and then welded, the processing precision and the qualified rate of finished products are improved, the mold is simple to operate, and the working efficiency in the welding preparation stage is improved.

Description

Technical Field

[0001] This invention relates to the field of plasma head manufacturing technology, specifically to a mold for manufacturing a plasma head and a processing method thereon. Background Technology

[0002] In the current technological development environment, plasma heads have a wide range of applications. In the processing and production of plasma heads, inner tubes and outer tubes are used. After the inner tubes and outer tubes are set coaxially, one end of the inner tube and the other end are welded to form a connection structure with a certain arc. In this way, the inner tube and the outer tube become an integral structure. As the core component of the plasma head, after it is made, the component is placed in a frame. The center hole of the inner tube is used for flame spraying, and the outer side is circulated with cooling water. The excellent performance of this core component is related to the axial setting of the inner and outer tubes.

[0003] In existing technologies, welding is usually performed by manually aligning the centers of the inner and outer tubes. This makes the welding preparation stage time-consuming, and there are no special fixing parts after manual alignment. Therefore, it is very likely that the inner or outer tube will deviate after painstaking alignment. All of these will reduce the processing and manufacturing efficiency of the plasma head. At the same time, the manual alignment operation is highly subjective and lacks objective references for calibration. Welding the inner and outer tubes placed in this way will result in poor processing accuracy of the plasma head. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present invention aims to provide a mold for manufacturing a plasma head and a processing method thereof.

[0005] In a first aspect, the present invention provides a mold for manufacturing a plasma head, comprising:

[0006] A mold body, comprising a mounting structure, one end of which is mounted on a lathe chuck; a positioning component is provided on the side of the mounting structure away from the lathe, the positioning component comprising:

[0007] An inner tube positioning assembly includes a positioning post coaxially arranged with the mounting structure and having a diameter smaller than that of the mounting structure. An inner tube is sleeved on the positioning post, and the bottom of the inner tube is supported by a radially protruding annular surface of the mounting structure away from the lathe. A first fixing component is provided on the side of the positioning post away from the mounting structure, which is used to coaxially arrange the inner tube and the positioning post and connect the two.

[0008] An outer tube positioning assembly, comprising at least a first adjustment component, wherein an outer tube is fitted over an inner tube, and the bottom of the outer tube is supported by the annular surface, the first adjustment component being used to adjust the position of the outer tube radially and to fix the outer tube when the outer tube is coaxial with the inner tube.

[0009] According to the technical solution provided by the present invention, the first fixing component includes:

[0010] A positioning tube is sleeved outside the positioning post, and an inner tube is sleeved outside the positioning tube. The side of the positioning tube closest to the mounting structure is fixedly connected to the positioning post, and the other side protrudes axially from the positioning post, with a first space formed between the inner tube wall and the top surface of the positioning post.

[0011] A locking assembly is disposed within the first space and is used to fix the inner tube to the positioning tube.

[0012] According to the technical solution provided by the present invention, the locking component includes:

[0013] An expansion ring is fixedly connected to the side of the positioning tube away from the mounting structure.

[0014] A pressure cap that can move axially within the first space, the movement of the pressure cap driving the expansion ring to expand toward the inner tube side, so that the expansion ring is connected to the end of the inner tube away from the mounting structure.

[0015] According to the technical solution provided by the present invention, the pressure cap includes a guide portion near the positioning post and a pushing portion connected to the guide portion. The outer diameter of the pushing portion decreases from large to small in the direction away from the guide portion and towards the guide portion. The guide portion moves toward the positioning post in the first space, and the outer wall of the pushing portion abuts against the expansion ring.

[0016] According to the technical solution provided by the present invention, the pressure cap has a first adjustment hole, and a first adjustment member is provided in the first adjustment hole. The first adjustment member is threadedly connected to the positioning post near the pressure cap. An elastic element is provided in the first adjustment hole, and the first adjustment member passes through the elastic element. One end of the elastic element abuts against the pressure cap, and the other end abuts against the positioning post.

[0017] According to the technical solution provided by the present invention, the outer tube positioning assembly further includes a positioning sleeve. One side of the positioning sleeve is fixed to the mounting structure away from the lathe, and the other side forms a first annular groove with the positioning tube. The inner tube and the outer tube are disposed in the first annular groove.

[0018] According to the technical solution provided by the present invention, the positioning sleeve has a plurality of adjusting columns arranged in a circumferential array on the side away from the mounting structure, and each adjusting column is provided with a second adjusting member, and each second adjusting member can move radially.

[0019] According to the technical solution provided by the present invention, the end of the positioning sleeve away from the mounting structure is provided with a ring platform coaxially arranged with the positioning post, the adjusting post is disposed on the ring platform, and the adjusting post is perpendicular to the ring platform.

[0020] According to the technical solution provided by the present invention, the mounting structure is provided with a main air channel, and the mounting structure has an air inlet on the side away from the positioning component to supply air to the main air channel. The main air channel forms a plurality of branch air channels on the side away from the air inlet. There is a first gap between the inner tube and the outer tube, and each of the branch air channels is filled with air into the first gap.

[0021] Secondly, the present invention proposes a method for processing a plasma head, comprising the following steps:

[0022] S1. Install one end of the mounting structure onto the lathe chuck jaw;

[0023] S2. Sleeve the inner tube over the positioning post, and adjust the first adjusting member to move the pressure cap toward the positioning post until the outer periphery of the tightening ring abuts against the inner wall of the inner tube.

[0024] S3. Place the outer tube over the inner tube, adjust the second adjusting member to align the outer tube with the axis of the inner tube, and lock the second adjusting member.

[0025] S4. Air is introduced into the main air passage through the air inlet, and each of the branch air passages is filled with air into the first gap;

[0026] S5. Weld the ends of the inner tube and the outer tube.

[0027] In summary, this invention proposes a mold for manufacturing a plasma head and a processing method thereon. The mold includes: a mold body, which includes a mounting structure, one end of which is mounted on a lathe chuck; a positioning component is provided on the side of the mounting structure away from the lathe, the positioning component including an inner tube positioning component, which includes a positioning post coaxially arranged with the mounting structure and having a diameter smaller than that of the mounting structure, an inner tube being sleeved on the positioning post, the bottom of which is supported by a radially protruding annular surface on the side of the mounting structure away from the lathe; a first fixing component is provided on the side of the positioning post away from the mounting structure, the first fixing component being used to coaxially arrange the inner tube and the positioning post and connect them; an outer tube positioning component includes at least a first adjusting component, an outer tube being sleeved on the inner tube, the bottom of which is supported by an annular surface, the first adjusting component being used to adjust the position of the outer tube radially and to fix the outer tube when the outer tube and the inner tube are coaxial.

[0028] Compared with the prior art, the beneficial effects of this invention are as follows: First, the inner tube is sleeved outside the positioning post. The inner tube is adjusted to be coaxial with the positioning post by the first fixing component, and then the inner tube is fixed to the mold body. Then, the outer tube is sleeved outside the inner tube. The position of the outer tube is adjusted radially by the first adjusting component so that the outer tube is coaxial with the inner tube. Then, the outer tube is fixed to the mold body. At this time, the inner tube and the outer tube are welded, which can ensure that the inner tube and the outer tube are in a concentric alignment state. Welding after coaxial setting can greatly improve the finished product qualification rate and improve the processing accuracy. The mold is simple to operate when adjusting the alignment of the inner and outer tube axes, which improves the work efficiency of the welding preparation stage. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the mold for manufacturing the plasma head provided in an embodiment of the present invention.

[0030] The text labels in the image represent:

[0031] 1. Mold body; 101. Ring surface; 11. Mounting structure; 111. Main air passage; 112. Air inlet; 12. Positioning pin; 121. Threaded blind hole; 13. Positioning sleeve; 14. Ring platform; 15. Adjusting pin; 151. Second adjusting component; 16. Pressure cap; 161. First adjusting hole; 162. Elastic element; 163. Guide part; 164. Pushing part; 17. Expansion ring; 18. First ring groove; 19. First space. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Example 1

[0035] As mentioned in the background section, to address the problems in the prior art, this invention proposes a mold for manufacturing a plasma head. Please refer to [reference needed]. Figure 1 As shown, it includes:

[0036] The mold body 1 includes a mounting structure 11, one end of which is mounted on a lathe chuck; the mounting structure 11 has a positioning component on the side away from the lathe, the positioning component including:

[0037] An inner tube positioning assembly includes a positioning post 12 coaxially arranged with the mounting structure 11 and having a diameter smaller than that of the mounting structure 11. An inner tube is sleeved on the positioning post 12, and the bottom of the inner tube is supported by a radially protruding annular surface 101 of the mounting structure 11 away from the lathe. A first fixing component is provided on the side of the positioning post 12 away from the mounting structure 11, which is used to coaxially arrange the inner tube and the positioning post 12 and connect the two.

[0038] An outer tube positioning assembly, comprising at least a first adjustment component, wherein an outer tube is fitted over an inner tube, and the bottom of the outer tube is supported by the annular surface 101; the first adjustment component is used to adjust the position of the outer tube radially and to fix the outer tube when the outer tube is coaxial with the inner tube.

[0039] Specifically, both the inner tube and the outer tube are quartz tubes. The mold body 1 includes an mounting structure 11 and a positioning assembly. The mounting structure 11 is a cylinder with a certain height. The bottom of the mounting structure 11 is the mounting end, which is mounted on the lathe jaw. The other end of the mounting structure 11 is provided with a positioning post 12 integrally formed therewith. The positioning post 12 is also cylindrical, and its outer diameter is smaller than that of the mounting structure 11. This creates an exposed annular surface 101 at the junction of the mounting structure 11 and the positioning post 12. This surface can be positioned relative to the inner tube. The inner tube and the outer tube provide some support. When using this mold, first, the inner tube is placed on the positioning post 12, with the bottom of the inner tube on the annular surface 101. The first fixing component is adjusted so that the inner tube is aligned with the axis of the positioning post 12. Then, the inner tube is fixed to the mold body 1. Next, the outer tube is placed on the inner tube. The first adjusting component is used to adjust the position of the outer tube relative to the inner tube so that the axis of the outer tube is aligned with the inner tube. Finally, the first adjusting component is used to fix the outer tube to the mold body 1. This completes the alignment task in the welding preparation stage.

[0040] The working principle of this mold is as follows: the positioning post 12 and the mounting structure 11 are coaxial and have a regular shape with their axes in a straight line. At this time, the positioning post 12 serves as a reference calibrator. The inner tube and the inner tube fitted outside it both use the same reference calibrator to adjust their axes, thus achieving the effect of axis alignment.

[0041] In a preferred embodiment, the first fixing component includes:

[0042] The positioning tube is sleeved outside the positioning post 12, and the inner tube is sleeved outside the positioning tube. The side of the positioning tube close to the mounting structure 11 is fixedly connected to the positioning post 12, and the other side protrudes axially from the positioning post 12, and a first space 19 is formed between the inner tube wall and the top surface of the positioning post 12.

[0043] A locking assembly is disposed within the first space 19, and the locking assembly is used to fix the inner tube to the positioning tube.

[0044] Specifically, the positioning tube is a hollow cylindrical tube. The side of the positioning tube closest to the mounting structure 11 is threadedly connected to the bottom of the positioning post 12, and the positioning tube and the positioning post 12 are coaxially arranged. The circumferential height of the positioning tube is higher than that of the positioning post 12, causing the end furthest from the mounting structure 11 to extend beyond the positioning post 12, making the positioning post 12 recessed. Together with the inner wall of the positioning tube, they form the first space 19. A portion of the locking assembly can move axially within the first space 19, and another portion can expand radially in a circular manner. After expansion, the inner tube can be fixedly connected to the positioning tube. The working principle is described in detail in the following embodiment.

[0045] In a preferred embodiment, the locking assembly includes:

[0046] An expansion ring 17 is fixedly connected to the positioning tube on the side away from the mounting structure 11.

[0047] A pressure cap 16 is movable in the axial direction within the first space 19. The movement of the pressure cap 16 drives the expansion ring 17 to expand toward the inner tube side, so that the expansion ring 17 is connected to the end of the inner tube away from the mounting structure 11.

[0048] In a preferred embodiment, the pressure cap 16 includes a guide portion 163 near the positioning post 12 and a pushing portion 164 connected to the guide portion 163. The outer diameter of the pushing portion 164 decreases from large to small in the direction away from the guide portion 163 and towards the guide portion 163. The guide portion 163 moves toward the positioning post 12 within the first space 19, and the outer wall of the pushing portion 164 abuts against the expansion ring 17.

[0049] In a preferred embodiment, the pressure cap 16 has a first adjustment hole 161, and a first adjustment member is provided in the first adjustment hole 161. The first adjustment member is threadedly connected to the positioning post 12 near the side of the pressure cap 16.

[0050] In a preferred embodiment, an elastic element 162 is provided in the first adjustment hole 161, the first adjustment member passes through the elastic element 162, one end of the elastic element 162 abuts against the pressure cap 16, and the other end abuts against the positioning post 12.

[0051] Specifically, the tension ring 17 is fixed to the end edge of the positioning tube. In its natural state, the tension ring 17 is coaxial with the positioning tube. The pressure cap 16 includes a cylindrical guide portion 163 and a frustum-shaped pushing portion 164. The guide portion 163 is sized to match the positioning post 12 and can move axially within the first space 19. A bolt is provided in the first adjusting hole 161 within the pressure cap 16. The elastic element 162 is a spring, and the bolt passes through the spring. The end of the positioning post 12 opposite to the pressure cap 16 has a threaded blind hole 121. The bolt is aligned with the threaded blind hole 121. The working principle of the entire process is as follows: by slowly tightening the bolt downwards, the pressure cap 16 moves towards the positioning post 12. During this movement, when the pushing portion 164 touches the inner side of the tension ring 17, the outer wall of the pushing portion 164... With a sloping structure, the pushing part 164 will push the expansion ring 17 outwards evenly along the circumference. The expansion ring 17 expands outwards in a circular shape. During the expansion of the expansion part, the position of the inner tube can be adjusted. As the bolt moves down, one end of the spring abuts against the inner wall of the first adjustment hole 161 of the pressure cap 16, and the other end abuts against the top surface of the positioning post 12 on the outer periphery of the threaded blind hole 121. The spring plays a buffering and fixing role. The pressure cap 16 and the expansion ring 17 clamp the inner tube, which is coaxial with the positioning post 12, so that the inner tube forms a force transmission and fixing system of "inner tube-expansion ring 17-pressure cap 16-positioning tube-positioning structure". Under the premise of ensuring that the inner tube is coaxial with the positioning post 12, the inner tube is fixedly connected to the mold body 1.

[0052] In a preferred embodiment, the outer tube positioning assembly further includes a positioning sleeve 13. One side of the positioning sleeve 13 is fixed to the mounting structure 11 away from the lathe, and the other side forms a first annular groove 18 between it and the positioning tube. The inner tube and the outer tube are disposed in the first annular groove 18.

[0053] Specifically, the positioning sleeve 13 is a circular structure with a certain height along the axial direction. One end is attached to the arc-shaped outer wall of the mounting structure 11, and the other end extends out of the mounting structure 11 along the axial direction. Since the outer diameter of the mounting structure 11 is larger than that of the positioning post 12, a first annular groove 18 with a depth is formed between the positioning post 12 and the positioning sleeve 13. The positioning sleeve 13 and the positioning post 12 form a vertical first annular groove 18, which also serves to guide the outer tube. The outer positioning sleeve 13 also has a certain protective function.

[0054] In a preferred embodiment, the positioning sleeve 13 has a plurality of adjusting posts 15 arranged in a circumferential array on the side away from the mounting structure 11, and each adjusting post 15 is provided with a second adjusting member 151, and each second adjusting member 151 can move radially.

[0055] In a preferred embodiment, the end of the positioning sleeve 13 away from the mounting structure 11 is provided with a ring platform 14 coaxially arranged with the positioning post 12, and the adjusting post 15 is provided on the ring platform 14 and the adjusting post 15 is perpendicular to the ring platform 14.

[0056] Specifically, each adjusting post 15 is vertically disposed on the annular platform 14. The annular platform 14 can be integrally disposed with the positioning sleeve 13, or it can be designed as a separate structure, with the two fixed by a threaded connection. This invention provides an embodiment with three adjusting posts 15. Multiple sets of second adjusting members 151 can be disposed along the adjusting posts 15, which can ensure that the overall extension direction of the outer tube is perpendicular to the radial direction. This embodiment provides another embodiment, that is, a second adjusting member 151 is disposed above the adjusting post 15. The second adjusting member 151 is a bolt, which is inserted into the threaded through hole of the adjusting post 15. The adjusting bolt is oriented towards the positioning sleeve 13. The positioning post 12 moves away from the positioning post 12, and the outer tube is adjusted to align with the axis of the inner tube by pressing against the outer wall of the outer tube. The three second adjusting members 151 are turned in coordination, and the outer tube is moved against the outer tube wall in their respective control directions to move the outer tube to a position where the axis is aligned with the inner tube. At this time, the second adjusting members 151 are tightened to clamp and fix the outer tube, so that the outer tube forms a fixed force transmission structure of "outer tube-second adjusting member 151-positioning post 12-ring platform 14-positioning sleeve 13-installation structure 11". Under the premise of ensuring that the outer tube and the inner tube are coaxial, the outer tube is fixed to the mold body 1.

[0057] In a preferred embodiment, the mounting structure 11 is provided with a main air passage 111. The mounting structure 11 has an air inlet 112 on the side away from the positioning component, which supplies air to the main air passage 111. The main air passage 111 forms a plurality of branch air passages on the side away from the air inlet 112. There is a first gap between the inner tube and the outer tube, and each of the branch air passages is filled with air into the first gap.

[0058] Specifically, the main air duct 111 is introduced in a long claw manner, which divides the main air duct 111 into multiple branch air ducts. The annular surface 101 of the mounting structure 11 has an air filling hole that communicates with each of the branch air ducts. The air filling hole blows air into the first gap to prevent the tube from collapsing due to excessive temperature during welding. The long claw blowing method is beneficial for the uniform and stable heating of the quartz tube.

[0059] Example 2

[0060] Based on Example 1, this example provides a method for processing a plasma head, which is completed using the plasma head manufacturing mold described in Example 1, and includes the following steps:

[0061] S1. Install one end of the mounting structure 11 onto the lathe jaw;

[0062] S2. Sleeve the inner tube over the positioning post 12, and adjust the first adjusting member to move the pressure cap 16 toward the positioning post 12 until the outer periphery of the tightening ring 17 abuts against the inner wall of the inner tube.

[0063] S3. Sleeve the outer tube over the inner tube, adjust the second adjusting member 151 to align the outer tube with the axis of the inner tube, and lock the second adjusting member 151.

[0064] S4. Air enters the main air passage 111 through the air inlet 112, and each of the branch air passages fills the first gap with air.

[0065] S5. Weld the ends of the inner tube and the outer tube.

[0066] Specifically, all structures of the mold are hydraulically assembled, ensuring concentricity within 0.03mm. One end of the mounting structure 11 is mounted on the lathe chuck, the positioning sleeve 13 is mounted on the mounting structure 11, and the inner tube is fitted onto the positioning post 12. The bottom is supported by the bottom of the first annular groove. Adjusting the first adjusting member causes the pressure cap 16 to press downwards, causing the expansion ring 17 to expand outwards circumferentially. This not only adjusts the position of the inner tube to align it with the axis of the positioning post 12, but also locks the inner tube in place when aligned. The inner tube is then integrated with the mold body. Next, the outer tube is fitted over the inner tube. The positioning sleeve 13 provides limiting and lateral support for the outer tube. At this point, the three second adjusting members 151 are adjusted to align the outer tube with the axis of the inner tube. When the axes are aligned, the second adjusting members 151 are locked, thus integrating the outer tube with the mold body. This completes the preparatory work for plasma head welding. Because excessively high welding temperatures can cause the inner and / or outer tubes to collapse, the first gap is continuously purged during welding to ensure a smooth welding process.

[0067] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A mold for manufacturing a plasma head, characterized in that, include: The mold body (1) includes a mounting structure (11), one end of which is mounted on a lathe chuck; the mounting structure (11) has a positioning component on the side away from the lathe, the positioning component including: An inner tube positioning assembly includes a positioning post (12) coaxially arranged with the mounting structure (11) and having a diameter smaller than that of the mounting structure (11). An inner tube is sleeved on the positioning post (12), and the bottom of the inner tube is supported by a radially protruding annular surface (101) of the mounting structure (11) away from the lathe. A first fixing component is provided on the side of the positioning post (12) away from the mounting structure (11), which is used to coaxially arrange the inner tube and the positioning post (12) and connect the two. An outer tube positioning assembly, the outer tube positioning assembly including at least a first adjustment assembly, the inner tube being fitted with an outer tube, the bottom of the outer tube being supported by the annular surface (101), the first adjustment assembly being used to adjust the position of the outer tube radially, and to fix the outer tube when the outer tube is coaxial with the inner tube; The first fixing component includes: The positioning tube is sleeved outside the positioning post (12), and the inner tube is sleeved outside the positioning tube. The side of the positioning tube close to the mounting structure (11) is fixedly connected to the positioning post (12), and the other side protrudes from the positioning post (12) along the axial direction. A first space (19) is formed between the inner tube wall and the top surface of the positioning post (12). A locking assembly is disposed in the first space (19) and is used to fix the inner tube to the positioning tube. The locking assembly includes: An expansion ring (17) is fixedly connected to the positioning tube on the side away from the mounting structure (11); A pressure cap (16) is movable in the axial direction within the first space (19). The movement of the pressure cap (16) drives the expansion ring (17) to expand toward the inner tube side, so that the expansion ring (17) is connected to the end of the inner tube away from the mounting structure (11). The pressure cap (16) includes a guide portion (163) near the positioning post (12) and a push portion (164) connected to the guide portion (163). The outer diameter of the push portion (164) decreases from large to small in the direction away from the guide portion (163) and towards the guide portion (163). The guide portion (163) moves toward the positioning post (12) in the first space (19), and the outer wall of the push portion (164) abuts against the expansion ring (17).

2. The mold for manufacturing the plasma head according to claim 1, characterized in that, The pressure cap (16) has a first adjustment hole (161) and a first adjustment member is provided in the first adjustment hole (161). The first adjustment member is threadedly connected to the positioning post (12) near the pressure cap (16). An elastic element (162) is provided in the first adjustment hole (161). The first adjustment member passes through the elastic element (162). One end of the elastic element (162) abuts against the pressure cap (16) and the other end abuts against the positioning post (12).

3. The mold for manufacturing the plasma head according to claim 2, characterized in that, The outer tube positioning assembly also includes a positioning sleeve (13), one side of which is fixed to the mounting structure (11) away from the lathe, and the other side forms a first annular groove (18) between the positioning sleeve (13) and the positioning tube. The inner tube and the outer tube are provided in the first annular groove (18).

4. The mold for manufacturing the plasma head according to claim 3, characterized in that, The positioning sleeve (13) has several adjusting columns (15) arranged in a circumferential array on the side away from the mounting structure (11). Each adjusting column (15) is provided with a second adjusting member (151), and each second adjusting member (151) can move radially.

5. The mold for manufacturing the plasma head according to claim 4, characterized in that, The end of the positioning sleeve (13) away from the mounting structure (11) is provided with a ring platform (14) coaxially arranged with the positioning post (12). The adjusting post (15) is provided on the ring platform (14) and the adjusting post (15) is perpendicular to the ring platform (14).

6. The mold for manufacturing the plasma head according to claim 5, characterized in that, The mounting structure (11) is provided with a main air passage (111). The mounting structure (11) has an air inlet (112) on the side away from the positioning component to supply air to the main air passage (111). The main air passage (111) forms several branch air passages on the side away from the air inlet (112). There is a first gap between the inner tube and the outer tube. Each branch air passage is filled with air into the first gap.

7. A method for processing a plasma head, comprising using the plasma head manufacturing mold as described in claim 6, characterized in that, Includes the following steps: S1. Install one end of the mounting structure (11) onto the lathe chuck; S2. Sleeve the inner tube over the positioning post (12), and adjust the first adjusting member to move the pressure cap (16) toward the positioning post (12) until the outer periphery of the tightening ring (17) abuts against the inner wall of the inner tube. S3. Place the outer tube over the inner tube, adjust the second adjusting member (151) to align the outer tube with the axis of the inner tube, and lock the second adjusting member (151). S4. Air enters the main air passage (111) through the air inlet (112), and each of the branch air passages fills the first gap with air; S5. Weld the ends of the inner tube and the outer tube.

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