Welding positioning device for metal ceramic X-ray tube

Abstract

The invention relates to the technical field of X-ray tube welding positioning, in particular to a metal ceramic X-ray tube welding positioning device which comprises an operation table, a positioning mechanism and a welding mechanism, a fixing assembly is arranged on the operation table, and an X-ray tube assembly is placed on the fixing assembly. The positioning mechanism is used for rapidly positioning the welding position of the X-ray tube assembly, rapid welding positioning is achieved, the positioning precision is improved, the welding deviation is reduced, the welding seam consistency is improved, the high-speed welding requirement is met, and the welding efficiency is improved; and the surfaces of the metal ceramic X-ray tubes with different curvature radiuses are automatically attached to ensure that the welding gun always keeps an optimal contact angle with a welding seam. The welding seam quality is improved, defects are reduced, and the consistency of welding seams is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of X-ray tube welding positioning, and specifically relates to a welding positioning device for a metal-ceramic X-ray tube. Background Art

[0002] A metal-ceramic X-ray tube is a high-performance X-ray generating device that uses a composite material of metal and ceramic as the tube shell. The metal-ceramic structure has significantly higher mechanical shock resistance than traditional glass tubes, strong seismic resistance, and is especially suitable for mobile devices or industrial scenarios with frequent starts and stops. It has achieved breakthroughs in mechanical strength, thermal performance, lifespan, and stability, becoming a key device in high-end medical, industrial inspection, aerospace, and other fields. It is used to detect defects such as cracks, pores, and inclusions inside metal components, welded joints, composite materials, etc. Combined with a digital flat panel detector, it can achieve real-time imaging of the object to be inspected, improving the detection efficiency and automation level.

[0003] The ray output window is an important part of the X-ray tube, which allows X-rays to emit from the tube. In the manufacturing of metal-ceramic X-ray tubes, welding is used to firmly fix the ray output window on the tube body. The position and angle of the ray output window precisely determine the emission direction of the X-rays. Since a large amount of heat is generated during the process of X-ray generation by high-speed electrons hitting the anode target during the output of the X-ray beam, a certain distance is required for heat dissipation. Therefore, the ray output window is generally welded at the end position of the tube body. And because most of the tube body is arc-shaped, while the connection between the output window and the tank body is semi-arc-shaped, the curvature radius of the semi-arc seam is small, making it difficult to maintain the optimal action angle between the welding torch and the workpiece during welding. Due to the curvature problem of the arc surface, it is easy to cause incompatibility with its curvature during welding, resulting in an unsealed welding seam. The micro-gap of the weld seam will damage the airtightness of the tube body. After external air infiltrates, the residual gas molecules are ionized under the high-voltage electric field, triggering continuous discharge, accelerating the oxidation of the cathode filament, and shortening the lifespan of the X-ray tube. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding positioning device for a metal-ceramic X-ray tube to solve the problems raised in the above background art.

[0005] The technical solution adopted by the present application to solve its technical problems is: a welding positioning device for a metal-ceramic X-ray tube, including: an operation table, on which a fixing component is arranged, and an X-ray tube component is placed on the fixing component. It further includes: Positioning mechanism, the positioning mechanism is arranged above the operating table, the positioning mechanism includes a plurality of fixed columns fixedly arranged above the operating table, a fixing plate is fixedly arranged on the fixed columns together, a rotating disk is arranged at the bottom of the fixing plate, eccentric rods are symmetrically and fixedly arranged on the rotating disk, a connecting rod is rotatably connected to the eccentric rod, and the positioning mechanism is used for quickly positioning the welding position of the X-ray tube assembly; Welding mechanism, the welding mechanism is arranged on the positioning mechanism, the welding mechanism includes a C-shaped frame arranged on the positioning mechanism, a toothed plate is arranged at the bottom of the C-shaped frame, a connecting column is movably connected through the toothed plate, a welding torch is arranged on one side of the connecting column, and the welding mechanism is used for adaptively welding the arc surface after the positioning mechanism positions.

[0006] Preferably, the fixing component includes a fixing table fixedly arranged in the middle of the operating table, movable cavities are symmetrically opened on both sides of the fixing table, a first fixing block is fixedly arranged at the opening of the movable cavity, a movable rod is slidably arranged through the middle of the first fixing block, an elastic member is sleeved on the outer surface of the movable rod, a second fixing block is fixedly arranged at one end of the movable rod located in the movable cavity, the elastic member is located between the first fixing block and the second fixing block, a pressing plate is fixedly connected to the movable rods on both sides together, and a supporting block is symmetrically and fixedly arranged on one of the pressing plates.

[0007] Preferably, the X-ray tube assembly includes a tube body arranged above the fixing table, a ray output window is arranged on the outer surface of the tube body, cooling tube joints are symmetrically communicated with the side wall of the tube body, and the bottom ends of the cooling tube joints are adapted to the supporting blocks.

[0008] Preferably, the positioning mechanism further includes a through groove opened in the middle of the top end of the fixing plate, sliding grooves are symmetrically opened on the fixing plate on both sides of the through groove, a C-shaped plate is slidably connected in the sliding grooves together, a motor is fixedly arranged on the C-shaped plate, an output shaft is rotatably connected to the motor, and the output shaft penetrates through the through groove.

[0009] Preferably, guide rails I are symmetrically arranged at the bottom of the fixing plate, a sliding plate is slidably arranged on the guide rails I, a circular groove is opened in the middle of the sliding plate, columnar blocks are symmetrically and slidably arranged on the inner wall of the groove, a convex block is fixedly arranged on the outer surface of the columnar block, and the side wall of the convex block is fixedly connected to the rotating disk.

[0010] Preferably, a plurality of ratchet teeth are fixedly arranged in the middle of the rotating disk, the ratchet teeth are arranged in a circumferential array with the center of the rotating disk as the origin, an installation groove is opened on the output shaft on one side of the ratchet teeth, a column is fixedly arranged in the installation groove, torsion springs are symmetrically sleeved on the column, a ratchet pawl is arranged between the torsion springs in a limiting manner, the ratchet pawl rotates on the outer surface of the column, and the end of the ratchet pawl is stuck between adjacent ratchet teeth.

[0011] Preferably, guide rails II are symmetrically and fixedly arranged on the sliding plate. A moving block is slidably connected to the guide rails II. A connecting shaft is fixedly arranged on the moving block. The outer surface of the connecting shaft is rotationally connected to the end of the connecting rod.

[0012] Preferably, the welding mechanism further includes a gear fixedly arranged on the output shaft and movable grooves symmetrically arranged on the sliding plate. C-shaped frames are symmetrically and slidably connected in the movable grooves. Connecting grooves are formed in the C-shaped frames.

[0013] Preferably, a connecting block is fixedly arranged in the connecting groove. The top of the connecting block is fixedly connected to the bottom of the connecting shaft. The bottom of the connecting block is slidably connected to a toothed plate. The toothed plate meshes with the gear. A first limiting block is arranged at the top of the toothed plate. The first limiting block is fixedly connected to a connecting column. The bottom of the connecting column is provided with an arc surface.

[0014] Preferably, a compression spring is sleeved on the connecting column. A second limiting block is fixedly arranged on the outer surface of the connecting column. The compression spring is located between the second limiting block and the toothed plate. A connecting piece is fixedly arranged on the outer surface of the second limiting block. The connecting piece is fixedly connected to a welding torch. The welding end of the welding torch and the bottom end of the fixed column are on the same horizontal line.

[0015] The beneficial effect of this application is as follows: A welding positioning device for a metal-ceramic X-ray tube provided by this application, by placing the X-ray tube assembly on the fixed table, enabling the bottom end of the cooling tube joint to be accurately docked with the supporting block, then pushing the two side pressing plates, the pressing plates drive the movable rods to slide in the movable cavities, enabling the second fixing block to compress the elastic member, and the elastic force generated by the elastic member is transmitted to the pressing plates through the movable rods, enabling the pressing plates to tightly press against the side wall of the tube body, thereby realizing the stable fixation of the X-ray tube assembly and providing a reliable preliminary positioning support for the subsequent welding work.

[0016] A welding positioning device for a metal-ceramic X-ray tube provided by this application, after starting the motor, the output shaft starts to rotate. When the output shaft rotates, under the action of the pawl, the rotating disc is driven to rotate through the ratchet teeth. At this time, the eccentric rod pulls the connecting rod. Since the end of the connecting rod is located on the connecting shaft of the moving block, when the connecting rod is pulled, the moving block moves linearly synchronously on the guide rails II, and the welding mechanism is pulled close to the welding position through the connecting shaft, realizing rapid welding positioning, not only improving the positioning accuracy, but also reducing the welding deviation, improving the weld consistency, meeting the requirements of high-speed welding, and enhancing the welding efficiency.

[0017] The present application provides a welding positioning device for a metal ceramic X-ray tube. In the process of moving the positioning mechanism to a suitable position through the output shaft, the teeth of the tooth plate and the gear are brought close to each other and meshed. Then the output shaft starts to reverse. At this time, the ratchet will not drive the rotating disk to rotate under the restriction of the inclined surface of the ratchet. Then, when the gear rotates, it will drive the tooth plate to move synchronously towards each other. The arc surface at the bottom of the connecting column cooperates with the compression spring to form a floating structure. When the tooth plate moves, it can automatically fit the surface of the metal ceramic tube with different curvature radii to ensure that the welding gun always maintains the best contact angle with the weld. Not only does it ensure the quality of the weld, reduce defects, and improve the consistency of the weld, but also the arc end faces on both sides of the ray output window can be welded synchronously during welding, so that the heat-affected zones of the welds on both sides are expanded synchronously.

[0018] In addition to the above-described purposes, features and advantages, the present application has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-section structure of the fixing assembly of the present invention; Figure 3 It is a schematic structural diagram of the overall present invention from another perspective; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 It is a schematic diagram of the welding mechanism structure of the present invention; Figure 6 It is a schematic diagram of the overall transverse cross-section structure of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at B in the middle; Figure 8 It is a schematic diagram of the local structure of the output shaft after cutting of the present invention.

[0020] Description of the figure number: 1. Operating table; 2. Fixing component; 3. Fixing table; 4. Movable cavity; 5. First fixing block; 6. Movable rod; 7. Elastic member; 8. Second fixing block; 9. Bracing plate; 10. Supporting block; 11. X-ray tube assembly; 12. Tube body; 13. Ray output window; 14. Cooling tube joint; 15. Positioning mechanism; 16. Fixing column; 17. Fixing plate; 18. Through groove; 19. Sliding groove; 20. C-shaped plate; 21. Motor; 22. Output shaft; 23. First guide rail; 24. Sliding plate; 25. Groove; 26. Cylindrical block; 27. Protrusion; 28. Rotating disk; 29. Ratchet tooth; 30. Installation groove; 31. Column; 32. Torsion spring; 33. Pawl; 34. Eccentric rod; 35. Second guide rail; 36. Moving block; 37. Connecting shaft; 38. Connecting rod; 39. Welding mechanism; 40. Gear; 41. Movable groove; 42. C-shaped frame; 43. Connecting groove; 44. Connecting block; 45. Toothed plate; 46. Connecting column; 47. First limiting block; 48. Compression spring; 49. Second limiting block; 50. Connecting member; 51. Welding torch. Detailed implementation manners

[0021] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The following will describe the present application in detail with reference to the drawings and in combination with the embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0023] Please refer to Figures 1 to 8 , a welding positioning device for a cermet X-ray tube, comprising: an operating table 1, a fixing component 2 is arranged on the operating table 1, an X-ray tube assembly 11 is placed on the fixing component 2, the fixing component 2 includes a fixing table 3 fixedly arranged in the middle of the operating table 1, movable cavities 4 are symmetrically opened on both sides of the fixing table 3, a first fixing block 5 is fixedly arranged at the opening of the movable cavity 4, a movable rod 6 is slidably arranged through the middle of the first fixing block 5, an elastic member 7 is sleeved on the outer surface of the movable rod 6, a second fixing block 8 is fixedly arranged at one end of the movable rod 6 located in the movable cavity 4, the elastic member 7 is located between the first fixing block 5 and the second fixing block 8, a bracing plate 9 is fixedly connected to both movable rods 6, and a supporting block 10 is symmetrically and fixedly arranged on one of the bracing plates 9. The X-ray tube assembly 11 includes a tube body 12 arranged above the fixing table 3, a ray output window 13 is arranged on the outer surface of the tube body 12, cooling tube joints 14 are symmetrically communicated with the side wall of the tube body 12, and the bottom end of the cooling tube joint 14 is adapted to the supporting block 10.

[0024] It should be noted that the X-ray tube assembly includes a tube body 12 disposed above the fixed table 3. A ray output window 13 is provided on the outer surface of the tube body 12. Both the tube body 12 and the ray output window 13 are made of metal. Cooling tube connectors 14 symmetrically communicated with the side wall of the tube body 12 are used to connect a cooling system to cool the X-ray tube. The bottom end of the cooling tube connector 14 is adapted to the supporting block 10. When the X-ray tube assembly is placed on the fixing assembly 2, the bottom end of the cooling tube connector 14 can be accurately placed on the supporting block 10 to achieve preliminary positioning. At the same time, the supporting block 10 can also support the cooling tube connector 14 to prevent it from shaking during the welding process. When using this device, place the X-ray tube assembly on the fixed table 3 so that the bottom end of the cooling tube connector 14 is accurately docked with the supporting block 10. Then push the two side pressing plates 9. The pressing plates 9 drive the movable rods 6 to slide in the movable cavity 4, so that the second fixing block 8 compresses the elastic member 7. The elastic force generated by the elastic member 7 is transmitted to the pressing plates 9 through the movable rods 6, so that the pressing plates 9 tightly press against the side wall of the tube body 12, thereby realizing the stable fixation of the X-ray tube assembly and providing reliable preliminary positioning support for the subsequent welding work.

[0025] For details, please refer to Figure 1 and Figures 3 to 6 A welding positioning device for a metal-ceramic X-ray tube further includes: a positioning mechanism 15. The positioning mechanism 15 is disposed above the operating table 1. The positioning mechanism 15 includes a plurality of fixed columns 16 fixedly arranged above the operating table 1. A fixing plate 17 is fixedly arranged on the fixed columns 16 together. A rotating disk 28 is provided at the bottom of the fixing plate 17. Eccentric rods 34 are symmetrically and fixedly arranged on the rotating disk 28. A connecting rod 38 is rotatably connected to the eccentric rod 34. The positioning mechanism 15 is used to quickly position the welding position of the X-ray tube assembly 11. The positioning mechanism 15 further includes a through groove 18 opened in the middle of the top end of the fixing plate 17. Slide grooves 19 are symmetrically opened on the fixing plate 17 on both sides of the through groove 18. A C-shaped plate 20 is slidably connected in the slide grooves 19 together. A motor 21 is fixedly arranged on the C-shaped plate 20. An output shaft 22 is rotatably connected to the motor 21. The output shaft 22 penetrates through the through groove 18. Guide rails 23 are symmetrically arranged at the bottom of the fixing plate 17. A sliding plate 24 is slidably arranged on the guide rails 23. A circular groove 25 is opened in the middle of the sliding plate 24. Columnar blocks 26 are symmetrically and slidably arranged on the inner wall of the groove 25. A convex block 27 is fixedly arranged on the outer surface of the columnar block 26. The side wall of the convex block 27 is fixedly connected to the rotating disk 28. There is a certain resistance when the columnar block 26 moves in the groove 25, so as to ensure that the rotating disk 28 can maintain a stable relative position when it stops. The operation program of the output shaft 22 is set to first rotate forward to drive the eccentric rod 34 on the rotating disk to gradually approach the moving block 36 at the end of the connecting rod 38. When it moves to a certain trajectory, the output shaft 22 rotates reversely.

[0026] It is worth mentioning that a number of ratchet teeth 29 are fixedly arranged in the middle of the rotating disk 28. The ratchet teeth 29 are arranged in a circumferential array with the center of the rotating disk 28 as the origin. An installation groove 30 is formed on the output shaft 22 on one side of the ratchet teeth 29. A column 31 is fixedly arranged in the installation groove 30. Torsion springs 32 are symmetrically sleeved on the column 31. A ratchet pawl 33 is jointly limited between the torsion springs 32. The ratchet pawl 33 rotates on the outer surface of the column 31, and the end of the ratchet pawl 33 is stuck between adjacent ratchet teeth 29. Guide rails two 35 are also symmetrically and fixedly arranged on the sliding plate 24. A moving block 36 is slidably connected to the guide rails two 35. A connecting shaft 37 is fixedly arranged on the moving block 36. The outer surface of the connecting shaft 37 is rotatably connected to the end of the connecting rod 38.

[0027] After starting the motor 21, the output shaft 22 starts to rotate. When the output shaft 22 rotates, under the action of the ratchet pawl 33, the rotating disk 28 is driven to rotate through the ratchet teeth 29. At this time, the eccentric rod 34 pulls the connecting rod 38. Since the end of the connecting rod 38 is located on the connecting shaft 37 of the moving block 36, when the connecting rod 38 is pulled, the moving block 36 moves linearly synchronously on the guide rails two 35, and the welding mechanism 39 is pulled close to the welding position through the connecting shaft 37, realizing rapid welding positioning. This not only improves the positioning accuracy, but also reduces the welding deviation, improves the weld consistency, meets the requirements of high-speed welding, and improves the welding efficiency.

[0028] For details, please refer to Figure 1 and Figures 4 to 8 , a welding positioning device for a cermet X-ray tube, further comprising: a welding mechanism 39. The welding mechanism 39 is arranged on the positioning mechanism 15. The welding mechanism 39 includes a C-shaped frame 42 arranged on the positioning mechanism 15. A toothed plate 45 is arranged at the bottom of the C-shaped frame 42. A connecting column 46 is movably connected through the toothed plate 45. A welding torch 51 is arranged on one side of the connecting column 46. The welding mechanism 39 is used for adaptively welding the arc surface after the positioning mechanism 15 positions. Since the surface of the ray output window 13 that fits the tube body 12 is semi-circular, during operation, due to the curvature problem of the arc surface, it is easy to cause the inability to adapt to its curvature during welding, resulting in an unsealed welding seam. The welding mechanism 39 is used to fit the outer surface of the tube body 12 and adapt to the curvature of the tube body 12 for rapid positioning welding to ensure the consistency of the weld.

[0029] Among them, the welding mechanism 39 further includes a gear 40 fixedly arranged on the output shaft 22 and movable grooves 41 symmetrically arranged on the sliding plate 24. C-shaped frames 42 are symmetrically and slidably connected in the movable grooves 41, and connecting grooves 43 are formed in the C-shaped frames 42. A connecting block 44 is fixedly arranged in the connecting groove 43. The top of the connecting block 44 is fixedly connected to the bottom of the connecting shaft 37, and the bottom of the connecting block 44 is slidably connected to a toothed plate 45. The toothed plate 45 meshes with the gear 40. A first limiting block 47 is arranged at the top of the toothed plate 45. The first limiting block 47 is fixedly connected to a connecting column 46. The bottom of the connecting column 46 is set as an arc surface. A compression spring 48 is sleeved on the connecting column 46. A second limiting block 49 is fixedly arranged on the outer surface of the connecting column 46. The compression spring 48 is located between the second limiting block 49 and the toothed plate 45. A connecting member 50 is fixedly arranged on the outer surface of the second limiting block 49. The connecting member 50 is fixedly connected to a welding torch 51. The welding end of the welding torch 51 is on the same horizontal line as the bottom end of the fixed column 16.

[0030] During the operation of the positioning mechanism 15 by the output shaft 22, the teeth of the toothed plate 45 and the gear 40 are urged to approach and mesh with each other. Subsequently, the output shaft 22 starts to reverse. At this time, under the restriction of the inclined surface of the ratchet tooth 29, the pawl 33 will not drive the rotating disk 28 to rotate. Therefore, when the gear 40 rotates, it will drive the toothed plate 45 to move synchronously in opposite directions. Through the cooperation of the arc surface at the bottom of the connecting column 46 and the compression spring 48, a floating structure is formed. When the toothed plate 45 moves, it can automatically fit the surfaces of cermet tubes with different radii of curvature, ensuring that the welding torch 51 always maintains the best contact angle with the weld. This not only ensures the weld quality, reduces defects, and improves the consistency of the welded joint, but also can synchronously weld the two arc-shaped end faces on both sides of the radiation output window 13 during welding, enabling the heat-affected zones of the welds on both sides to expand synchronously, significantly improving the assembly accuracy of the radiation window. Single positioning can complete double-sided welding, avoiding the cumbersome processes of secondary clamping and calibration.

[0031] The working principle of the present invention is specifically as follows: First, solder is coated between the tank body and the radiation output window 13 to form a preliminary connection. Subsequently, the X-ray tube assembly 11 is placed on the fixing assembly 2. The X-ray tube assembly 11 is clamped and fixed by the elastic member 7 and the abutting plate 9 of the fixing assembly 2. Then, the cooling tube joint 14 is lifted by the supporting block 10 on the abutting plate 9 to ensure that the X-ray tube assembly 11 is in the correct welding position. Subsequently, the motor 21 is started. When the output shaft 22 of the motor 21 rotates, under the action of the pawl 33, the rotating disk 28 is driven to rotate by the ratchet teeth 29. At this time, the eccentric rod 34 pulls the connecting rod 38. Since the end of the connecting rod 38 is located on the connecting shaft 37 of the moving block 36, when the connecting rod 38 is pulled, the moving block 36 moves linearly synchronously on the second guide rail 35 and pulls the welding mechanism 39 close to the welding position through the connecting shaft 37. At this time, the end of the welding torch 51 is on the same horizontal line as the part to be welded, realizing rapid welding positioning, not only improving the positioning accuracy, but also reducing the welding deviation, improving the weld consistency, meeting the requirements of high-speed welding, and enhancing the welding efficiency. During the operation of the positioning mechanism 15 by the output shaft 22, the toothed plate 45 and the teeth of the gear 40 are urged to approach and mesh with each other through the connecting hole at the bottom of the connecting shaft 37. Subsequently, the output shaft 22 starts to reverse. At this time, the pawl 33 is restricted by the inclined surface of the ratchet teeth 29 and will not drive the rotating disk 28 to rotate. Then, when the gear 40 rotates, it will drive the toothed plate 45 to move synchronously in opposite directions. Through the cooperation of the arc surface at the bottom of the connecting column 46 and the compression spring 48, a floating structure is formed. When the toothed plate 45 moves, it can automatically fit the surface of the cermet tube with different curvature radii to ensure that the welding torch 51 always maintains the best contact angle with the weld. This not only ensures the weld quality, reduces defects, and improves the consistency of the welding seam, but also can synchronously weld the two arc-shaped end faces on both sides of the radiation output window 13 during welding, enabling the heat-affected zones of the two welds to expand synchronously, significantly improving the assembly accuracy of the radiation window. Single positioning can complete the double-sided arc welding between the tube body 12 and the radiation output window 13, significantly improving the welding efficiency.

[0032] Those of ordinary skill in the art should understand that the discussion of any embodiment above is only exemplary. Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order. There are many other variations in different aspects of the present invention as described above, and they are not provided in detail for the sake of brevity.

[0033] The present invention aims to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A welding positioning device for a cermet X-ray tube, comprising: Operating table (1), a fixing component (2) is arranged on the operating table (1), and an X-ray tube component (11) is placed on the fixing component (2), characterized in that it further comprises: A positioning mechanism (15), the positioning mechanism (15) is arranged above the operating table (1), the positioning mechanism (15) includes a plurality of fixing columns (16) fixedly arranged above the operating table (1), a fixing plate (17) is fixedly arranged on the fixing columns (16) together, a rotating disk (28) is arranged at the bottom of the fixing plate (17), eccentric rods (34) are symmetrically and fixedly arranged on the rotating disk (28), a connecting rod (38) is rotatably connected to the eccentric rods (34), and the positioning mechanism (15) is used for quickly positioning the welding position of the X-ray tube component (11); A welding mechanism (39), the welding mechanism (39) is arranged on the positioning mechanism (15), the welding mechanism (39) includes a C-shaped frame (42) arranged on the positioning mechanism (15), a toothed plate (45) is arranged at the bottom of the C-shaped frame (42), a connecting column (46) is movably connected through the toothed plate (45), a welding torch (51) is arranged on one side of the connecting column (46), and the welding mechanism (39) is used for adaptively welding the arc surface after the positioning mechanism (15) positions.

2. The welding positioning device of a cermet X-ray tube according to claim 1, wherein The fixing component (2) includes a fixing table (3) fixedly arranged in the middle of the operating table (1), movable cavities (4) are symmetrically opened on both sides of the fixing table (3), a first fixing block (5) is fixedly arranged at the opening of the movable cavity (4), a movable rod (6) is slidably arranged through the middle of the first fixing block (5), an elastic member (7) is sleeved on the outer surface of the movable rod (6), a second fixing block (8) is fixedly arranged at one end of the movable rod (6) located in the movable cavity (4), the elastic member (7) is located between the first fixing block (5) and the second fixing block (8), and a pressing plate (9) is fixedly connected on the movable rods (6) on both sides together. A support block (10) is symmetrically and fixedly arranged on one of the pressing plates (9).

3. The welding positioning device for a cermet X-ray tube according to claim 1, characterized in that, The X-ray tube component (11) includes a tube body (12) arranged above the fixing table (3), a ray output window (13) is arranged on the outer surface of the tube body (12), cooling tube joints (14) are symmetrically communicated with the side wall of the tube body (12), and the bottom end of the cooling tube joint (14) is adapted to the support block (10).

4. The welding positioning device of a cermet X-ray tube according to claim 3, characterized in that, The positioning mechanism (15) further includes a through groove (18) opened in the middle of the top end of the fixing plate (17), sliding grooves (19) are symmetrically opened on the fixing plate (17) on both sides of the through groove (18), a C-shaped plate (20) is slidably connected in the sliding grooves (19) together, a motor (21) is fixedly arranged on the C-shaped plate (20), an output shaft (22) is rotatably connected to the motor (21), and the output shaft (22) penetrates through the through groove (18).

5. The welding positioning device for a cermet X-ray tube according to claim 4, characterized in that, A guide rail (23) is symmetrically arranged at the bottom of the fixed plate (17), a sliding plate (24) is slidably arranged on the guide rail (23), a circular groove (25) is opened in the middle of the sliding plate (24), a columnar block (26) is symmetrically and slidably arranged on the inner wall of the groove (25), a protrusion (27) is fixedly arranged on the outer surface of the columnar block (26), and the side wall of the protrusion (27) is fixedly connected to the rotating disk (28).

6. The welding positioning device of a cermet X-ray tube according to claim 5, characterized in that, A plurality of ratchet teeth (29) are fixedly arranged in the middle of the rotating disk (28), and the ratchet teeth (29) are arranged in a circular array with the center of the rotating disk (28) as the origin. A mounting groove (30) is provided on the output shaft (22) on one side of the ratchet teeth (29), and a column (31) is fixedly arranged in the mounting groove (30). Torsion springs (32) are symmetrically sleeved on the columns (31), and ratchet pawls (33) are commonly limited between the torsion springs (32). The ratchet pawls (33) rotate the outer surface of the columns (31), and the ends of the ratchet pawls (33) are clamped between adjacent ratchet teeth (29).

7. The welding positioning device for a cermet X-ray tube according to claim 6, wherein, A second guide rail (35) is symmetrically fixedly arranged on the sliding plate (24), a moving block (36) is slidably connected to the second guide rail (35), a connecting shaft (37) is fixedly arranged on the moving block (36), and an outer surface of the connecting shaft (37) is rotatably connected to the end of a connecting rod (38).

8. A welding positioning device for a cermet X-ray tube according to claim 1, characterized in that, The welding mechanism (39) further comprises a gear (40) fixedly arranged on the output shaft (22) and a movable groove (41) symmetrically arranged on the sliding plate (24), a C-shaped frame (42) being symmetrically slidably connected in the movable groove (41), and a connecting groove (43) being provided on the C-shaped frame (42).

9. The welding positioning device for a cermet X-ray tube according to claim 8, characterized in that, A connecting block (44) is fixedly arranged in the connecting groove (43); the top of the connecting block (44) is fixedly connected to the bottom of the connecting shaft (37); the bottom of the connecting block (44) is slidably connected to a toothed plate (45); the toothed plate (45) and the gear (40) are meshed with each other; a limiting block (47) is arranged on the top of the toothed plate (45); the limiting block (47) is fixedly connected to a connecting column (46); and the bottom of the connecting column (46) is arranged to be an arc surface.

10. A welding positioning device for a cermet X-ray tube according to claim 9, characterized in that, A compression spring (48) is sleeved on the connecting column (46); a second limit block (49) is fixedly provided on the outer surface of the connecting column (46); the compression spring (48) is located between the second limit block (49) and the tooth plate (45); a connecting piece (50) is fixedly provided on the outer surface of the second limit block (49); the connecting piece (50) is fixedly connected to a welding gun (51); and a welding end of the welding gun (51) is on the same horizontal line as the bottom end of the fixed column (16).

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