A welding positioning device for a cermet X-ray tube

Abstract

The present application relates to the technical field of X-ray tube welding positioning, in particular to a welding positioning device for metal ceramic X-ray tubes, comprising: an operation table, a fixing assembly is arranged on the operation table, an X-ray tube assembly is placed on the fixing assembly, further comprising: a positioning mechanism and a welding mechanism, the positioning mechanism is used for quickly positioning the welding position of the X-ray tube assembly, realizing quick welding positioning, which not only improves positioning accuracy, but also reduces welding deviation, improves weld consistency, adapts to high-speed welding demand, improves welding efficiency, the welding mechanism is used for adaptive welding of the arc surface after positioning by the positioning mechanism, automatically adheres to the surface of the metal ceramic X-ray tube with different curvature radii, ensures that the welding gun always maintains the best contact angle with the weld, improves the quality of the weld, reduces defects, and ensures the consistency of the welding joint.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of X-ray tube welding positioning, in particular to a welding positioning device for a cermet X-ray tube. BACKGROUND

[0002] The cermet X-ray tube is a high-performance X-ray generating device using metal and ceramic composite materials as the tube shell. The mechanical impact resistance of the cermet structure is significantly higher than that of the traditional glass tube, and the anti-shock performance is strong, especially suitable for mobile equipment or frequent start-stop industrial scenarios. Breakthroughs have been made in mechanical strength, thermal performance, service life, and stability, becoming a key device in high-end medical, industrial detection, and aerospace fields, used for detecting internal defects such as cracks, pores, and inclusions in metal components, welded joints, and composite materials, and realizing real-time imaging of the detected object in combination with a digital flat panel detector, improving detection efficiency and automation level.

[0003] The X-ray output window is an important part of the X-ray tube, which allows X-rays to be emitted from the tube. In the manufacture of the cermet X-ray tube, welding is used to firmly fix the X-ray output window on the tube body. The position and angle of the X-ray output window accurately determine the emission direction of the X-rays. Since the X-ray beam is generated by high-speed electron impact on the anode target during the output process, a lot of heat is generated, so a certain distance is needed for heat dissipation. Therefore, the X-ray output window is generally welded at the end position of the tube body. Since the tube body is mostly arc-shaped, and the connection between the output window and the tank body is semi-arc-shaped, the curvature radius of the semi-arc-shaped joint is small, and it is difficult to maintain the optimal angle of the welding gun and the workpiece during welding. Due to the curvature problem of the arc surface, it is difficult to adapt to the curvature during welding, causing the welding seam to be not tight. The micro-gap in the welding seam will damage the air tightness of the tube body. After external air penetrates, residual gas molecules are ionized under high voltage, causing continuous discharge, accelerating the oxidation of the cathode filament, and shortening the service life of the X-ray tube. SUMMARY

[0004] The purpose of the present application is to provide a welding positioning device for a cermet X-ray tube to solve the problems raised in the background.

[0005] The technical solution adopted by the present application to solve its technical problems is: a welding positioning device for a cermet X-ray tube, comprising: an operation table, a fixing assembly is arranged on the operation table, and an X-ray tube assembly is placed on the fixing assembly, further comprising:

[0006] A positioning mechanism is arranged above the operation table, which comprises a plurality of fixed columns fixedly arranged above the operation table, a fixed plate fixedly arranged on the fixed columns, a rotating disc arranged at the bottom of the fixed plate, an eccentric rod fixedly arranged on the rotating disc, and a connecting rod rotatably connected to the eccentric rod, and the positioning mechanism is used for quickly positioning the welding position of the X-ray tube assembly.

[0007] A welding mechanism is arranged on the positioning mechanism, which comprises a C-shaped frame arranged on the positioning mechanism, a toothed plate arranged at the bottom of the C-shaped frame, a connecting column movably connected through the toothed plate, and a welding gun arranged on one side of the connecting column, and the welding mechanism is used for adaptive welding of the arc surface after positioning by the positioning mechanism.

[0008] Preferably, the fixed assembly comprises a fixed table fixedly arranged in the middle of the operation table, a movable cavity symmetrically arranged on both sides of the fixed table, a fixed block one fixedly arranged at the opening of the movable cavity, a movable rod slidably arranged through the fixed block one, an elastic member sleeved on the outer surface of the movable rod, a fixed block two fixedly arranged at one end of the movable rod in the movable cavity, the elastic member located between the fixed block one and the fixed block two, and a resisting plate fixedly connected to both sides of the movable rod, wherein the resisting plate is symmetrically and fixedly provided with a supporting block.

[0009] Preferably, the X-ray tube assembly comprises a tube body arranged above the fixed table, a radiation output window arranged on the outer surface of the tube body, and a cooling pipe joint symmetrically communicated with the side wall of the tube body, and the bottom end of the cooling pipe joint is matched with the supporting block.

[0010] Preferably, the positioning mechanism further comprises a through groove arranged in the middle of the top end of the fixed plate, a sliding groove symmetrically arranged on both sides of the fixed plate, a C-shaped plate slidably connected in the sliding groove, a motor fixedly arranged on the C-shaped plate, an output shaft rotatably connected to the motor, and the output shaft penetrates through the through groove.

[0011] Preferably, the bottom of the fixed plate is symmetrically provided with a guide rail one, a sliding plate slidably arranged on the guide rail one, a circular recess arranged in the middle of the sliding plate, a cylindrical block symmetrically and slidably arranged on the inner wall of the recess, a protruding block fixedly arranged on the outer surface of the cylindrical block, and the side wall of the protruding block is fixedly connected with the rotating disc.

[0012] Preferably, a plurality of ratchets are fixedly arranged in the middle of the rotating disc, the ratchets are arranged in a circumferential array with the center of the rotating disc as the origin, an installation groove is arranged on one side of the output shaft of the ratchet, a stand is fixedly arranged in the installation groove, torsional springs are symmetrically sleeved on the stand, a pawl is jointly limited between the torsional springs, the pawl rotates the outer surface of the stand, and the end of the pawl is clamped between adjacent ratchets.

[0013] Preferably, a guide rail two is also symmetrically and fixedly arranged on the sliding plate, a moving block is slidably connected to the guide rail two, a connecting shaft is fixedly arranged on the moving block, and the outer surface of the connecting shaft is rotatably connected to the end of the connecting rod.

[0014] Preferably, the welding mechanism further comprises a gear fixedly arranged on the output shaft and a movable slot symmetrically arranged on the sliding plate, a C-shaped frame is symmetrically and slidably connected in the movable slot, and a connecting slot is formed in the C-shaped frame.

[0015] Preferably, a connecting block is fixedly arranged in the connecting slot, 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 is meshed with the gear, a limiting block one is arranged on the top of the toothed plate, the limiting block one is fixedly connected to a connecting column, and the bottom of the connecting column is arranged as a circular arc surface.

[0016] Preferably, a compression spring is sleeved on the connecting column, a limiting block two is fixedly arranged on the outer surface of the connecting column, the compression spring is located between the limiting block two and the toothed plate, a connecting piece is fixedly arranged on the outer surface of the limiting block two, the connecting piece is fixedly connected to a welding gun, and the welding end of the welding gun is located on the same horizontal line as the bottom end of a fixing column.

[0017] The application has the following beneficial effects:

[0018] The welding positioning device for the metal ceramic X-ray tube provided by the application can accurately butt the bottom end of the cooling pipe joint with the supporting block, then push the two side resisting plates, the resisting plates drive the movable rods to slide in the movable cavities, the elastic member is compressed by the fixing block two, the elastic force generated by the elastic member is transmitted to the resisting plates through the movable rods, the resisting plates are tightly pressed against the side wall of the pipe body, and thus the stable fixation of the X-ray tube assembly is realized, thereby providing reliable preliminary positioning support for the subsequent welding work.

[0019] The welding positioning device for the metal ceramic X-ray tube provided by the application can drive the rotating disc to rotate through the ratchet under the action force of the pawl when the output shaft starts to rotate after the motor is started, the eccentric rod pulls the connecting rod at this time, the connecting rod end is located on the connecting shaft of the moving block, so that the moving block moves linearly on the guide rail two synchronously when the connecting rod is pulled, and the welding mechanism is pulled close to the welding position through the connecting shaft, thereby realizing the rapid welding positioning, improving the positioning accuracy, reducing the welding deviation, improving the weld consistency, adapting to the high-speed welding demand, and improving the welding efficiency.

[0020] The application provides a welding positioning device of a cermet X-ray tube, through the process that the output shaft runs the positioning mechanism to the appropriate position, the teeth of the toothed plate and the gear are caused to approach and engage each other, then the output shaft starts to reverse, at this time the pawl is limited by the inclined surface of the ratchet teeth and cannot drive the rotating disc to rotate, and then when the gear rotates, the toothed plate will be driven to move synchronously, through the cooperation of the bottom arc surface of the connecting column and the compression spring, a floating structure is formed, when the toothed plate moves, it can automatically adhere to the surface of the cermet tube with different curvature radii, and the welding gun can always keep the best contact angle with the weld, not only ensuring the weld quality, reducing defects and improving the consistency of the welding seam, but also synchronously welding the arc-shaped end faces on both sides of the X-ray output window when welding, so that the heat affected zones of the welds on both sides are synchronously expanded.

[0021] In addition to the purposes, features and advantages described above, the application has other purposes, features and advantages. The application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the application;

[0023] Figure 2 It is a schematic diagram of the sectional structure of the fixed assembly of the application;

[0024] Figure 3 It is a schematic diagram of the overall structure of the application from another perspective;

[0025] Figure 4 It is a schematic diagram of the overall structure of the application from another perspective; Figure 3 It is a schematic diagram of the enlarged structure at A in the application;

[0026] Figure 5 It is a schematic diagram of the welding mechanism structure of the application;

[0027] Figure 6 It is a schematic diagram of the overall transverse sectional structure of the application;

[0028] Figure 7 It is a schematic diagram of the overall structure of the application from another perspective; Figure 6 It is a schematic diagram of the enlarged structure at B in the application;

[0029] Figure 8 It is a schematic diagram of the sectional structure of the output shaft of the application.

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] 1. Operating table; 2. Fixed assembly; 3. Fixed platform; 4. Movable cavity; 5. Fixed block one; 6. Movable rod; 7. Elastic element; 8. Fixed block two; 9. Support plate; 10. Support block; 11. X-ray tube assembly; 12. Tube body; 13. X-ray output window; 14. Cooling pipe connector; 15. Positioning mechanism; 16. Fixed column; 17. Fixed plate; 18. Through groove; 19. Slide groove; 20. C-shaped plate; 21. Motor; 22. Output shaft; 23. Guide rail one; 24. Sliding plate; 25. Groove; 26. 27. Columnar block; 28. Protrusion; 29. ​​Rotating disk; 30. Racket tooth; 31. Mounting slot; 32. Column; 33. Torsion spring; 34. Pawl; 35. Eccentric rod; 36. Guide rail two; 37. Moving block; 38. Connecting shaft; 39. Connecting rod; 40. Welding mechanism; 41. Gear; 42. Movable slot; 43. C-shaped frame; 44. Connecting slot; 45. Connecting block; 46. Toothed plate; 47. Connecting column; 48. Limiting block one; 49. Compression spring; 50. Limiting block two; 51. Connecting piece; 52. Welding torch. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0034] Please refer to Figures 1 to 8 A welding and positioning device for a metal-ceramic X-ray tube includes: an operating table 1, a fixing component 2 on the operating table 1, and an X-ray tube assembly 11 placed on the fixing component 2. The fixing component 2 includes a fixing platform 3 fixedly disposed in the middle of the operating table 1. The fixing platform 3 has symmetrically arranged movable cavities 4 on both sides. A fixing block 5 is fixedly disposed at the opening of the movable cavity 4. A movable rod 6 is slidably disposed through the middle of the fixing block 5. An elastic element 7 is sleeved on the outer surface of the movable rod 6. A fixing block 8 is fixedly disposed at one end of the movable rod 6 located inside the movable cavity 4. The elastic element 7 is located between the fixing block 5 and the fixing block 8. A stop plate 9 is fixedly connected to both movable rods 6. A support block 10 is symmetrically and fixedly disposed on one of the stop plates 9. The X-ray tube assembly 11 includes a tube body 12 disposed above the fixing platform 3. A X-ray output window 13 is disposed on the outer surface of the tube body 12. Cooling pipe joints 14 are symmetrically connected to the side walls of the tube body 12. The bottom end of the cooling pipe joint 14 is adapted to the support block 10.

[0035] It should be noted that the X-ray tube assembly includes a tube body 12 arranged above the fixed table 3, and the outer surface of the tube body 12 is provided with a ray output window 13, and the tube body 12 and the ray output window 13 are both metal materials. The cooling pipe joint 14 symmetrically connected to the side wall of the tube body 12 is used to connect the cooling system to cool the X-ray tube. The bottom end of the cooling pipe joint 14 is matched with the supporting block 10, and when the X-ray tube assembly is placed on the fixed assembly 2, the bottom end of the cooling pipe joint 14 can be accurately placed on the supporting block 10 to realize preliminary positioning, and the supporting block 10 can also support the cooling pipe joint 14 to prevent it from shaking during the welding process. When using the device, place the X-ray tube assembly on the fixed table 3, make the bottom end of the cooling pipe joint 14 accurately butt joint with the supporting block 10, then push the two side resisting plates 9, the resisting plate 9 drives the movable rod 6 to slide in the movable cavity 4, the fixed block two 8 compresses the elastic member 7, the elastic force generated by the elastic member 7 is transmitted to the resisting plate 9 through the movable rod 6, and the resisting plate 9 is tightly resisted against the side wall of the tube body 12, so that the X-ray tube assembly is stably fixed, and reliable preliminary positioning support is provided for subsequent welding work.

[0036] For details, please refer to Figure 1 and Figures 3 to 6 A welding positioning device for a metal ceramic X-ray tube also includes a positioning mechanism 15 arranged above the operating table 1, the positioning mechanism 15 includes a plurality of fixed columns 16 fixedly arranged above the operating table 1, the fixed columns 16 are jointly and fixedly provided with a fixed plate 17, the bottom of the fixed plate 17 is provided with a rotating disc 28, the rotating disc 28 is symmetrically and fixedly provided with an eccentric rod 34, the eccentric rod 34 is rotatably connected with a connecting rod 38, and the positioning mechanism 15 is used for quickly positioning the welding position of the X-ray tube assembly 11.

[0037] The positioning mechanism 15 further includes a through groove 18 formed in the middle of the top end of the fixed plate 17, and symmetrical slide grooves 19 are formed in the fixed plate 17 on the two sides of the through groove 18. The C-shaped plate 20 is jointly and slidably connected in the slide grooves 19, the motor 21 is fixedly arranged on the C-shaped plate 20, the output shaft 22 is rotatably connected with the motor 21, and the output shaft 22 penetrates the through groove 18. The fixed plate 17 is symmetrically provided with guide rails one 23 at the bottom, the sliding plate 24 is slidably arranged on the guide rails one 23, the circular recess 25 is formed in the middle of the sliding plate 24, the cylindrical block 26 is symmetrically and slidably arranged on the inner wall of the recess 25, the convex block 27 is fixedly arranged on the outer surface of the cylindrical block 26, the side wall of the convex block 27 is fixedly connected with the rotating disc 28, and there is a certain resistance between the cylindrical block 26 and the recess 25 when the cylindrical block 26 moves relative to the recess 25, so that the rotating disc 28 can keep the relative position stable when it stops. The running program of the output shaft 22 is set to first rotate forward to make the eccentric rod 34 on the rotating disc 28 drive the moving block 36 at the end of the connecting rod 38 to gradually approach, and then the output shaft 22 is reversed when it moves to a certain track.

[0038] It is worth mentioning that a plurality of ratchet teeth 29 are fixedly arranged in the middle of the rotating disc 28, the ratchet teeth 29 are arranged in a circle with the center of the rotating disc 28 as the origin, the output shaft 22 on one side of the ratchet teeth 29 is provided with a mounting groove 30, a stand 31 is fixedly arranged in the mounting groove 30, torsion springs 32 are symmetrically arranged on the stand 31, ratchet claws 33 are jointly arranged between the torsion springs 32, the ratchet claws 33 rotate the outer surface of the stand 31, and the end portions of the ratchet claws 33 are clamped between adjacent ratchet teeth 29. The sliding plate 24 is also fixedly provided with guide rails two 35, the moving block 36 is slidably connected to the guide rails two 35, the connecting shaft 37 is fixedly arranged on the moving block 36, and the outer surface of the connecting shaft 37 is rotatably connected to the end portion of the connecting rod 38.

[0039] After the motor 21 is started, the output shaft 22 starts to rotate, when the output shaft 22 rotates, under the action of the ratchet claws 33, the rotating disc 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 portion 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 on the guide rails two 35 synchronously, and the welding mechanism 39 is pulled to the welding position through the connecting shaft 37, so that rapid welding positioning is realized, not only the positioning accuracy is improved, but also the welding deviation is reduced, the weld consistency is improved, the high-speed welding demand is adapted, and the welding efficiency is improved.

[0040] For details, please refer to Figure 1 and Figures 4 to 8 A welding positioning device of a metal ceramic X-ray tube also comprises: a welding mechanism 39, the welding mechanism 39 is arranged on the positioning mechanism 15, the welding mechanism 39 comprises a C-shaped frame 42 arranged on the positioning mechanism 15, the C-shaped frame 42 is provided with a toothed plate 45 at the bottom, the toothed plate 45 is movably connected with a connecting column 46, the connecting column 46 is provided with a welding gun 51 on one side, and the welding mechanism 39 is used for adaptive welding of the arc surface after the positioning mechanism 15 is positioned. Since the side of the ray output window 13 adhered to the tube body 12 is semicircular, due to the curvature problem of the arc surface during operation, it is easy to cause that the curvature cannot be matched during welding, and the welding seam is not tight. The welding mechanism 39 is used for adhering to the outer surface of the tube body 12, adapting to the curvature of the tube body 12 for rapid positioning welding, and ensuring the consistency of the welding seam.

[0041] The welding mechanism 39 further comprises a gear 40 fixed on the output shaft 22 and a movable slot 41 symmetrically arranged on the sliding plate 24, and a C-shaped frame 42 is symmetrically and slidingly connected in the movable slot 41, and a connecting slot 43 is formed in the C-shaped frame 42.

[0042] During the operation of the positioning mechanism 15 by the output shaft 22, the teeth of the gear 40 and the teeth plate 45 are close to and engaged with each other, and then the output shaft 22 starts to reverse, at this time, the pawl 33 cannot drive the rotating disc 28 to rotate under the limitation of the inclined surface of the ratchet 29, and then when the gear 40 rotates, the teeth plate 45 synchronously moves towards each other, and through the cooperation of the bottom arc surface of the connecting column 46 and the compression spring 48, a floating structure is formed, and when the teeth plate 45 moves, it can automatically fit the surface of the metal ceramic pipe with different curvature radii, so that the welding gun 51 always maintains the best contact angle with the weld, not only ensuring the quality of the weld, reducing defects and improving the consistency of the welding joint, but also synchronously welding the two arc-shaped end faces of the radiation window 13 during welding, so that the heat affected zone of the two sides of the weld synchronously expands, the assembly precision of the radiation window is significantly improved, and the double-sided welding can be completed at one time, avoiding the complicated process of secondary clamping and calibration.

[0043] The working principle of the present application is specifically as follows:

[0044] First, the solder is coated between the tank body and the ray output window 13, forming a preliminary connection, then the X-ray tube assembly 11 is placed on the fixed assembly 2, and the X-ray tube assembly 11 is clamped and fixed by the elastic element 7 and the stop plate 9 of the fixed assembly 2, and the cooling pipe joint 14 is lifted by the supporting block 10 on the stop plate 9, to ensure that the X-ray tube assembly 11 is in the correct welding position, then the motor 21 is started, and when the output shaft 22 of the motor 21 rotates, the rotating disc 28 is driven to rotate by the ratchet 29 under the action of the pawl 33, at this time the eccentric rod 34 pulls the connecting rod 38, and 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 synchronously in a straight line on the guide rail two 35, and the welding mechanism 39 is pulled close to the welding position through the connecting shaft 37, at this time the end of the welding gun 51 is in the same horizontal line with the part to be welded, realizing quick welding positioning, which not only improves the positioning accuracy, but also reduces the welding deviation, improves the weld consistency, adapts to the high-speed welding demand, and improves the welding efficiency. During the operation of the positioning mechanism 15 by the output shaft 22, the connecting hole at the bottom of the connecting shaft 37 promotes the teeth of the gear plate 45 and the gear 40 to approach and mesh with each other, then the output shaft 22 starts to reverse, at this time the pawl 33 will not drive the rotating disc 28 to rotate under the limitation of the inclined surface of the ratchet 29, and then when the gear 40 rotates, it will drive the gear plate 45 to move synchronously, through the cooperation of the bottom arc surface of the connecting column 46 and the compression spring 48, a floating structure is formed, which can automatically fit the surface of the metal ceramic pipe with different curvature radii when the gear plate 45 moves, to ensure that the welding gun 51 always maintains the best contact angle with the weld, not only ensuring the weld quality, reducing defects, and improving the consistency of the welded seam, but also enabling the two side arc-shaped end faces of the ray output window 13 to be welded simultaneously when welding, so that the heat-affected zones of the two side welds expand synchronously, significantly improving the assembly precision of the ray window, and the double-side arc surface welding between the pipe body 12 and the ray output window 13 can be completed in a single positioning, which significantly improves the welding efficiency.

[0045] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary, and the technical features in the above embodiments or different embodiments can be combined under the idea of the present application, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of simplicity.

[0046] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications, variations, and the like are intended to be encompassed by the present application.

Claims

1. A welded positioning device for a cermet X-ray tube, comprising: The operating table (1) is provided with a fixed assembly (2), and the X-ray tube assembly (11) is placed on the fixed assembly (2). The fixed assembly (2) comprises a fixed table (3) fixedly arranged in the middle of the operating table (1), and the fixed table (3) is symmetrically provided with movable cavities (4) on both sides, the movable cavities (4) are fixedly provided with fixed blocks (5) at the openings, the movable cavities (4) are fixedly provided with movable rods (6) penetrating through the middle of the fixed blocks (5), the movable rods (6) are sleeved with elastic members (7), one end of the movable rods (6) in the movable cavities (4) is fixedly provided with fixed blocks (8), the elastic members (7) are located between the fixed blocks (5) and the fixed blocks (8), and the movable rods (6) on both sides are fixedly connected with abutting plates (9), and the abutting plates (9) are symmetrically and fixedly provided with supporting blocks (10); The positioning mechanism (15) is arranged above the operating table (1), the positioning mechanism (15) comprises a plurality of fixed columns (16) fixedly arranged above the operating table (1), the fixed columns (16) are fixedly provided with a fixed plate (17), the fixed plate (17) is provided with a rotating disc (28) at the bottom, the rotating disc (28) is fixedly provided with eccentric rods (34) symmetrically, the eccentric rods (34) are rotatably connected with connecting rods (38), the fixed plate (17) is symmetrically provided with guide rails (23) at the bottom, the guide rails (23) are slidably provided with sliding plates (24), the sliding plates (24) are provided with circular grooves (25) in the middle, the inner walls of the grooves (25) are symmetrically and slidably provided with cylindrical blocks (26), the outer surfaces of the cylindrical blocks (26) are fixedly provided with protrusions (27), the side walls of the protrusions (27) are fixedly connected with the rotating disc (28), the rotating disc (28) is fixedly provided with a plurality of ratchet teeth (29) in the middle, the ratchet teeth (29) are arranged in a circle with the center of the rotating disc (28) as the origin, the output shaft (22) on one side of the ratchet teeth (29) is provided with a mounting groove (30), the mounting groove (30) is fixedly provided with a stand column (31), the stand column (31) is symmetrically sleeved with torsional springs (32), the torsional springs (32) are jointly limited by ratchet claws (33), the ratchet claws (33) rotate the outer surface of the stand column (31), the ends of the ratchet claws (33) are clamped between adjacent ratchet teeth (29), the sliding plates (24) are also fixedly provided with guide rails (35) symmetrically, the guide rails (35) are slidably connected with moving blocks (36), the moving blocks (36) are fixedly provided with connecting shafts (37), the outer surfaces of the connecting shafts (37) are rotatably connected with the ends of the connecting rods (38), and the positioning mechanism (15) is used for quickly positioning the welding position of the X-ray tube assembly (11). 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), the bottom of the C-shaped frame (42) is provided with a toothed plate (45), the toothed plate (45) is movably connected with a connecting column (46) penetrating through, one side of the connecting column (46) is provided with a welding gun (51), the welding mechanism (39) further includes a gear (40) fixedly arranged on the output shaft (22) and a movable groove (41) symmetrically arranged on the sliding plate (24), the movable groove (41) is movably connected with the C-shaped frame (42) symmetrically, the C-shaped frame (42) is provided with a connecting groove (43), the connecting groove (43) is fixedly provided with a connecting block (44), the connecting block (44) is fixedly connected with the bottom of the connecting shaft (37), the connecting block (44) is movably connected with the toothed plate (45), the toothed plate (45) is meshed with the gear (40), the toothed plate (45) is provided with a limiting block one (47) on the top, the limiting block one (47) is fixedly connected with the connecting column (46), the bottom of the connecting column (46) is provided as a circular arc surface, the connecting column (46) is provided with a compression spring (48), the connecting column (46) is fixedly provided with a limiting block two (49) on the outer surface, the compression spring (48) is located between the limiting block two (49) and the toothed plate (45), the limiting block two (49) is fixedly provided with a connecting piece (50) on the outer surface, the connecting piece (50) is fixedly connected with the welding gun (51), the welding end of the welding gun (51) and the bottom end of the fixed column (16) are on the same horizontal line, and the welding mechanism (39) is used for self-adaptive welding of the arc surface after the positioning mechanism (15) is positioned.

2. A cermet X-ray tube welding positioning device according to claim 1, characterized in that The X-ray tube assembly (11) includes a tube body (12) arranged above the fixed table (3), the outer surface of the tube body (12) is provided with a ray output window (13), the side wall of the tube body (12) is symmetrically communicated with a cooling pipe joint (14), and the bottom end of the cooling pipe joint (14) is matched with the supporting block (10).

3. A cermet X-ray tube welding positioning device according to claim 1, characterized in that The positioning mechanism (15) further includes a through groove (18) formed in the top middle of the fixed plate (17), and the sliding grooves (19) are symmetrically formed in the fixed plate (17) on both sides of the through groove (18).

Images