X-ray tube filament shaping device, shaping system and shaping method

Abstract

The present application provides an X-ray tube filament shaping device, a shaping system and a shaping method, wherein the shaping device includes a workbench, a support frame, a conductive block and a clamping device. A limit groove is provided on the upper surface of the workbench, and the limit groove extends along a first direction, and the width of the limit groove is consistent with the width of the molybdenum rod. The second direction is perpendicular to the first direction. The support frame includes a main body and an upper edge portion connected to the upper end of the main body, and the main body is mounted on the workbench. Along the second direction, the main body is located behind the limit groove. Along the second direction, the front side of the upper edge portion extends beyond the main body, and the extending portion is provided with mounting holes arranged along the first direction, with the lower portion facing the limit groove. After the molybdenum rods at both ends of the filament assembly are inserted from top to bottom into the mounting holes and the limit groove, the conductive block presses on the adjacent molybdenum rods of the adjacent filament assembly. The clamping device presses the conductive block against the molybdenum rod. The present application can realize batch shaping of multiple filament assemblies at one time, improve shaping efficiency, reduce filament deformation, and improve the qualified rate.

Description

Technical Field

[0001] The present application relates to the technical field of X-ray tube filament shaping, and in particular to an X-ray tube filament shaping device, a shaping system, and a shaping method. Background Art

[0002] X-ray tubes are critical equipment in fields such as medical imaging and industrial inspection. Their performance directly impacts imaging quality and detection accuracy. The filament, the core of the hot cathode component, emits electrons, and its stability and durability are crucial to the overall performance of the device. The filament must operate in a high-temperature vacuum for extended periods of time, requiring excellent high-temperature stability and mechanical strength to prevent deformation and melting.

[0003] Currently, there are two main methods for shaping filaments. The first involves placing the assembled cathode head in a vacuum device, heating the filament by connecting the filament power supply and adjusting the current to a specific value to achieve individual filament shaping. While this method allows for precise control of the filament, it can only shape one cathode component at a time, resulting in low production efficiency and unsuitable for large-scale production.

[0004] The second method involves heating the filaments in a hydrogen atmosphere. This method allows for simultaneous shaping of multiple filaments, improving production efficiency. However, since the filament pins are difficult to secure in a hydrogen atmosphere, the filaments are prone to deformation during heating. Once deformed, this is difficult to repair, significantly impacting product yield.

[0005] The main drawback of existing technologies lies in the conflict between production efficiency and product quality. While the first method can ensure the quality of the filament's shape, it is inefficient and unsuitable for mass production. While the second method improves production efficiency, it suffers from issues with the filament pin fixation, resulting in a low yield and no guarantee that every filament will meet the expected performance requirements. Summary of the Invention

[0006] The purpose of the embodiments of the present application is to provide an X-ray tube filament shaping device, shaping system and shaping method, which can realize batch shaping of multiple filament components at one time, improve shaping efficiency, reduce filament deformation, and improve the pass rate.

[0007] In a first aspect, an X-ray tube filament shaping device is provided for shaping the filament of an assembled filament assembly, wherein the filament assembly includes a filament and a molybdenum rod connected to both ends of the filament. The X-ray tube filament shaping device includes a workbench, a support frame, a conductive block and a clamping device.

[0008] A limiting portion and a limiting groove are provided on the upper surface of the workbench. The limiting groove extends in a first direction, and the width of the limiting groove is consistent with the width of the molybdenum rod. In a second direction, the limiting portion is located behind the limiting groove. The second direction is perpendicular to the first direction. The support frame includes a main body and an upper edge portion connected to the upper end of the main body. A mating portion is provided on the bottom side of the main body. The main body is mounted on the workbench through the mating portion and the limiting portion. In the second direction, the main body is located behind the limiting groove. The main body and the upper edge portion both extend a predetermined length in the first direction. In the second direction, the front side of the upper edge portion extends beyond the main body. A plurality of mounting holes arranged in the first direction and extending vertically are provided on the portion of the front side of the upper edge portion that extends beyond the main body. The mounting holes are directly opposite the limiting groove. After the molybdenum rods at both ends of the filament assembly are inserted into the mounting holes and limiting grooves in sequence from top to bottom, the conductive block presses against the adjacent molybdenum rods of the adjacent filament assembly. A clamping device passes through the conductive block and is connected to the main body so that the conductive block presses against the adjacent molybdenum rods of the adjacent filament assembly to achieve electrical connection. Among them, the limiting groove, the main body, and at least the portion of the upper edge that contacts the molybdenum rod are made of non-conductive material.

[0009] In an implementable solution, the number of the mounting holes on the upper edge of the support frame is an even number.

[0010] In an implementable solution, two parallel clamping grooves are provided on the conductive block; when the conductive block is pressed on adjacent molybdenum rods of adjacent filament assemblies, the adjacent molybdenum rods are located in the clamping grooves.

[0011] In one feasible solution, the clamping groove is a V-shaped groove.

[0012] In one feasible solution, the main body and the upper edge of the support frame are an integrally formed structure.

[0013] In an implementable solution, the main body and the upper edge of the support frame are a separate assembly structure; the upper edge is mounted on the main body in a manner that allows it to slide and be fixed along the second direction.

[0014] In one feasible solution, a track extending in the second direction is provided on the upper surface of the main body, a slide groove extending through the second direction is provided on the bottom surface of the upper edge, and the upper edge is mounted on the main body such that the slide groove and the track slideably cooperate. A threaded hole is provided on the upper surface of the upper edge, extending into the slide groove, and a rotating member is disposed in the threaded hole; the rotating member is rotated to screw into the slide groove and press against the track surface, thereby restricting the upper edge from sliding in the second direction.

[0015] In one feasible solution, the main body is provided with a mounting hole extending along the second direction, and the extension length of the mounting hole along the first direction is at least greater than or equal to the extension distance of all the mounting holes along the first direction. A through hole is provided in the middle position of each conductive block. The clamping device includes a bolt, a spacer, a spring and a nut. The spacer is provided with through holes arranged along its length direction, and the spacer is provided on the rear side of the mounting hole of the main body, and the through holes on the spacer correspond one-to-one to the through holes on the front conductive block. On each conductive block, the bolt passes through the through hole of the conductive block, the mounting hole of the main body, the through hole of the spacer in sequence and is threadedly connected to the nut.

[0016] The spring is disposed on the bolt and between the nut and the spacer. When the nut is tightened, the spring applies a force to separate the nut and the spacer. Alternatively, the spring is disposed on the bolt and between the spacer and the main body. When the nut is tightened, the spring applies a force to separate the spacer and the main body. At least the spacer is made of an insulating material.

[0017] In a second aspect, the present application also provides an X-ray tube filament shaping system, comprising the aforementioned X-ray tube filament shaping device, and a vacuum chamber provided with an openable and sealable chamber door; the X-ray tube filament shaping device is disposed within the vacuum chamber. A first conductive head and a second conductive head are disposed on the wall of the vacuum chamber; one end of the first conductive head is located within the vacuum chamber and the other end is located outside the vacuum chamber; one end of the second conductive head is located within the vacuum chamber and the other end is located outside the vacuum chamber. After the molybdenum rods of the filament assembly are installed in the mounting holes on the upper edge of the X-ray tube filament shaping device, the filament assemblies at the extreme ends are respectively referred to as the front filament assembly and the rear filament assembly. The X-ray tube filament shaping system also includes a first conductive wire and a second conductive wire disposed within the vacuum chamber; a first end of the first conductive wire is connected to an end of the first conductive head located within the vacuum chamber, and a second end of the first conductive wire is configured to be removably connected to a molybdenum rod located adjacent to the front filament assembly; a first end of the second conductive wire is connected to an end of the second conductive head located within the vacuum chamber, and a second end of the second conductive wire is configured to be removably connected to a molybdenum rod located adjacent to the rear filament assembly. The X-ray tube filament shaping system also includes a vacuum pumping device connected to the vacuum chamber.

[0018] In a third aspect, the present application further provides an X-ray tube filament shaping method, using the aforementioned X-ray tube filament shaping system, the X-ray tube filament shaping method includes:

[0019] S1. Install the molybdenum rods of the assembled filament assemblies into the mounting holes on the upper edge and insert them into the limiting grooves on the workbench below.

[0020] S2. Adjust the clamping device so that each conductive block sequentially presses adjacent molybdenum rods of adjacent filament assemblies, so that the adjacent filament assemblies form a series circuit;

[0021] S3. Place the X-ray tube filament shaping device into the vacuum chamber, connect the two ends of the first wire to the first conductive head and the molybdenum rod on one side of the filament assembly, respectively, connect the two ends of the second wire to the second conductive head and the molybdenum rod on the other side of the filament assembly, and then close the chamber door of the vacuum chamber;

[0022] S4, using a vacuum pumping device to evacuate the vacuum chamber, and stop evacuating when the vacuum degree in the vacuum chamber is ≤1×10-4Pa;

[0023] S5, connecting one end of the first conductive head and the second conductive head outside the vacuum chamber to a power source;

[0024] S6. Set the current of the power supply according to the number of filament assemblies, and then turn on the power supply;

[0025] S7, measuring the temperature of the filament from outside the vacuum chamber to set the temperature between 2200 and 3100°C;

[0026] S8. After shaping, the filament is cooled to complete shaping.

[0027] Compared with the prior art, the beneficial effects of this application include at least the following:

[0028] The X-ray tube filament shaping device of the present application utilizes the combined effects of the mounting holes of the support frame, the conductive blocks, and the clamping device to enable multiple filament assemblies to be connected in series in a circuit. Thus, multiple filament assemblies can be shaped in a single vacuum heat treatment process, greatly improving shaping efficiency.

[0029] At the same time, the bottoms of the molybdenum rods of multiple filament assemblies are inserted into the limiting grooves on the workbench after passing through the mounting holes. The molybdenum rods are fixed with the help of the mounting holes and the limiting grooves to ensure that the position of the molybdenum rods can remain stable, thereby basically eliminating the unpredictable deformation of the filament caused by the instability of the molybdenum rods, reducing the risk of deformation during filament shaping, improving the quality of filament shaping, and improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 1 is a structural diagram of an X-ray tube filament shaping device according to an embodiment of the present application;

[0032] Figure 2 for Figure 1 Schematic diagram of the structure of the middle workbench;

[0033] Figure 3 for Figure 1 A structural schematic diagram of an integral support frame;

[0034] Figure 4 for Figure 1 Schematic diagram of the structure of the conductive block;

[0035] Figure 5 for Figure 1 Schematic diagram of the structure of the X-ray tube filament shaping device after assembling the filament assembly;

[0036] Figure 6 This is a first exploded structural diagram of an X-ray tube filament shaping device according to an embodiment of the present application;

[0037] Figure 7 1 is a second exploded structural diagram of an X-ray tube filament shaping device according to an embodiment of the present application;

[0038] Figure 8 for Figure 1 A structural diagram of a separate assembled support frame;

[0039] Figure 9 Schematic diagram of the structure of an X-ray tube filament shaping system according to an embodiment of the present application.

[0040] In the figure: 100, filament assembly; 101, filament; 102, molybdenum rod;

[0041] 1. Workbench; 11. Limiting part; 12. Limiting groove;

[0042] 2. Support frame; 21. Main body; 211. Strip hole; 212. Track; 22. Upper edge; 201. Mounting hole; 221. Slide groove; 222. Threaded hole; 223. Rotating member;

[0043] 3. Conductive block; 31. Clamping groove; 32. Through hole;

[0044] 4. Clamping device; 41. Bolt; 42. Spacer; 421. Through hole; 43. Spring; 44. Nut;

[0045] 5. Vacuum chamber; 51. Chamber door; 52. First conductive head; 53. Second conductive head; 54. First conductive wire; 55. Second conductive wire; 56. Vacuum pump;

[0046] 6. Locking bolts;

[0047] L1, first direction; L2, second direction. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0050] The embodiment of the present application first provides an X-ray tube filament shaping device for shaping the filament of an assembled filament assembly. Figure 5 As shown, the filament assembly 100 includes a filament 101 and a molybdenum rod 102 connected to both ends of the filament 101 .

[0051] like Figure 1 、 Figure 2 、 Figure 3 and Figure 8 As shown, the X-ray tube filament shaping device includes a workbench 1, a support frame 2, a conductive block 3 and a clamping device 4.

[0052] like Figure 2 As shown, a limiting portion 11 and a limiting groove 12 are provided on the upper surface of the workbench 1. The limiting groove 12 extends along a first direction L1, and the width of the limiting groove 12 is consistent with the width of the molybdenum rod 102. Along a second direction L2, the limiting portion 11 is located behind the limiting groove 12; wherein the second direction L2 is perpendicular to the first direction L1.

[0053] like Figure 3 or Figure 8 As shown, the support frame 2 includes a main body 21 and an upper edge portion 22 connected to the upper end of the main body 21, and a matching portion is provided on the bottom side of the main body 21; the main body 21 is installed on the workbench 1 through the matching portion and the limiting portion 11; and along the second direction L2, the main body 21 is located behind the limiting groove 12; the main body 21 and the upper edge portion 22 both extend a predetermined length along the first direction L1; along the second direction L2, the front side of the upper edge portion 22 exceeds the main body 21; a plurality of mounting holes 201 arranged along the first direction L1 and passing through up and down are provided on the portion of the front side of the upper edge portion 22 that exceeds the main body 21, and the mounting holes 201 are directly opposite the limiting groove 12.

[0054] After the molybdenum rods 102 at both ends of the filament assembly 100 are sequentially inserted into the mounting holes 201 and the limiting grooves 12 from top to bottom, the conductive block 3 is pressed against the adjacent molybdenum rod 102 of the adjacent filament assembly 100. The clamping device 4 passes through the conductive block 3 and is connected to the main body 21, so that the conductive block 3 is pressed against the adjacent molybdenum rod 102 of the adjacent filament assembly 100 to achieve electrical connection.

[0055] The limiting groove 12, the main body 21, and the upper edge 22 are made of non-conductive material. The workbench 1 can be made of insulating alumina, the support frame 2 can also be made of insulating alumina, and the conductive block 3 can be made of pure copper.

[0056] When the X-ray tube filament shaping device of this embodiment is used, Figure 5 As shown, the molybdenum rods 102 of multiple assembled filament assemblies 100 are sequentially installed in the mounting holes 201 of the upper edge portion 22 and inserted into the limiting grooves 12 of the workbench 1 below. Afterwards, the clamping device 4 is adjusted so that each conductive block 3 sequentially presses the adjacent molybdenum rods 102 of adjacent filament assemblies 100 so that the adjacent filament assemblies 100 form a series circuit, and the molybdenum rods 102 located on the two sides of all filament assemblies 100 are connected to the power supply so that all filament assemblies 100 are connected in series to the power supply circuit. The entire X-ray tube filament shaping device is placed in a vacuum environment, maintaining a certain vacuum degree, and passing a preset DC current through the series filament assemblies 100. After reaching the target temperature, the shaping is maintained for a predetermined time, and then after a predetermined cooling time, the shaping process of the filaments 101 of the multiple filament assemblies 100 is completed.

[0057] For example, Figure 5 As shown in FIG, the upper edge portion 22 of the support frame 2 is provided with five pairs of mounting holes 201, so that a maximum of five filament assemblies 100 can be mounted. Figure 5 The X-ray tube filament shaping device shown can perform shaping work on five filament assemblies 100 at one time. In addition, the number of mounting holes 201 can be increased by adding the upper edge portion 22 of the support frame 2, and the length of the limiting groove 12 of the workbench 1 can be extended accordingly.

[0058] In summary, the X-ray tube filament shaping device of this embodiment, by virtue of the combined action of the mounting hole 201 of the support frame 2, the conductive block 3, and the clamping device 4, enables multiple filament assemblies 100 to be connected in series in a circuit. Thus, multiple filament assemblies can be shaped in a single vacuum heat treatment process, greatly improving the shaping efficiency.

[0059] At the same time, the bottoms of the molybdenum rods 102 of the multiple filament assemblies 100 pass through the mounting holes 201 and are inserted into the limiting grooves 12 on the workbench 1. The molybdenum rods 102 are fixed with the help of the mounting holes 201 and the limiting grooves 12, ensuring that the position of the molybdenum rods 102 can remain stable, thereby basically eliminating the unpredictable deformation of the filament 101 caused by the instability of the molybdenum rods 102, reducing the risk of deformation during filament shaping, improving the quality of filament shaping, and improving the yield rate.

[0060] In this embodiment, if Figure 3 As shown, the number of the mounting holes 201 on the upper edge portion 22 of the support frame 2 can be an even number.

[0061] In this embodiment, if Figure 4 As shown, two parallel clamping grooves 31 can be provided on the conductive block 3; when the conductive block 3 is pressed against the adjacent molybdenum rods 102 of the adjacent filament assemblies 100, the adjacent molybdenum rods 102 are located in the clamping grooves 31. Under the action of the clamping device 4, the clamping grooves 31 can effectively fit the molybdenum rods 102, which not only improves the clamping and fixing effect of the molybdenum rods 102, but also increases the contact area between the conductive block 3 and the molybdenum rods 102.

[0062] In this embodiment, if Figure 4 As shown, the clamping groove 31 can be a V-shaped groove.

[0063] In this embodiment, if Figure 3 As shown, the main body portion 21 and the upper edge portion 22 of the support frame 2 can be an integrally formed structure.

[0064] In this embodiment, if Figure 8 As shown, the main body 21 and upper edge 22 of the support frame 2 can be assembled separately. The upper edge 22 is mounted on the main body 21 in a manner that allows it to slide and be fixed along the second direction L2. This adjusts the alignment between the mounting hole 201 of the upper edge 22 and the retaining groove 12 on the lower workbench 1, making it easier for the molybdenum rod 102 to pass through the mounting hole 201 and then accurately insert into the retaining groove 12 of the lower portion.

[0065] In this embodiment, if Figure 8 As shown, the upper surface of the main body 21 is provided with a track 212 extending along the second direction L2. The bottom surface of the upper edge 22 is provided with a slide groove 221 extending through the track 212 in the second direction L2. The upper edge 22 is mounted on the main body 21 in a manner such that the slide groove 221 and the track 212 slide together. A threaded hole 222 is provided on the upper surface of the upper edge 22 and extends through the slide groove 221. A rotating member 223 is disposed in the threaded hole 222. The rotating member 223 is rotated to screw into the slide groove 221 and press against the surface of the track 212, thereby limiting the sliding of the upper edge 22 in the second direction L2.

[0066] In this embodiment, if Figure 3 and Figure 8 As shown, the main body 21 may be provided with a mounting hole 201 penetrating along the second direction L2, and the extension length of the mounting hole 201 along the first direction L1 is at least greater than or equal to the extension distance of all mounting holes 201 along the first direction L1. Figure 4 As shown, a through hole 32 may be provided in the middle of each conductive block 3 .

[0067] like Figure 6 and Figure 7 As shown, the clamping device 4 includes a bolt 41, a spacer 42, a spring 43, and a nut 44. The spacer 42 is provided with through-holes 421 arranged along its length. The spacer 42 is positioned behind the mounting hole 201 of the main body 21, and the through-holes 421 on the spacer 42 correspond one-to-one with the through-holes 32 on the front conductive block 3. On each conductive block 3, the bolt 41 passes through the through-hole 32 of the conductive block 3, the mounting hole 201 of the main body 21, and the through-hole 421 of the spacer 42, and is threadedly connected to the nut 44.

[0068] like Figure 6 As shown, the spring 43 can be set on the bolt 41 and between the nut 44 and the spacer 42. When the nut 44 is tightened, the spring 43 exerts a force to move the nut 44 and the spacer 42 away from each other. Figure 7 As shown, the spring 43 can be mounted on the bolt 41 and positioned between the spacer 42 and the main body 21. When the nut 44 is tightened, the spring 43 exerts a force to move the spacer 42 and the main body 21 away from each other. With the force of the spring 43, the conductive block 3 is always tightly pressed against the molybdenum rod 102, thereby ensuring good electrical contact.

[0069] During use, the bolt 41 can be pulled outward or the nut 44 can be pressed to compress the spring 43, so that the conductive block 3 is no longer pressed against the molybdenum rod 102, thereby facilitating the removal or installation of the molybdenum rod 102. Alternatively, the bolt 41 and the nut 44 can be loosened to prevent the conductive block 3 from being pressed against the molybdenum rod 102, thereby facilitating the removal or installation of the molybdenum rod 102.

[0070] In addition, when the conductive block 3 is pressed onto the molybdenum rod 102 , the compression amount of the spring 43 can be adjusted by rotating the nut 44 , thereby adjusting the clamping degree of the conductive block 3 by the overall clamping device 4 .

[0071] Wherein, at least the spacer 42 is made of insulating material. For example, the spacer 42 can be made of bakelite, the bolt 41 and the nut 44 can be made of stainless steel, and the spring 43 can be made of chrome vanadium steel.

[0072] In this embodiment, if Figure 6 and Figure 7As shown, the limiting portion 11 on the workbench 1 can be a groove-shaped structure with a certain depth, and the bottom of the main body 21 of the support frame 2 as a whole serves as a matching portion, which is plugged into and matched with the groove-shaped structure (limiting portion 11) on the workbench 1. Figure 7 As shown, a locking bolt 6 can be used to pass through the support frame 2 and be fixed on the workbench 1 to achieve more stable fixation.

[0073] like Figure 8 As shown, an embodiment of the present application also provides an X-ray tube filament shaping system, including the X-ray tube filament shaping device in the aforementioned scheme, and also including a vacuum chamber 5, the vacuum chamber 5 is provided with a chamber door 51 that can be opened and closed and sealed; the X-ray tube filament shaping device is placed in the vacuum chamber 5.

[0074] A first conductive contact 52 and a second conductive contact 53 are disposed on the wall of the vacuum chamber 5. One end of the first conductive contact 52 is located inside the vacuum chamber 5, and the other end is located outside the vacuum chamber 5. One end of the second conductive contact 53 is located inside the vacuum chamber 5, and the other end is located outside the vacuum chamber 5. After the molybdenum rod 102 of the filament assembly 100 is installed in the mounting hole 201 of the upper edge portion 22 of the X-ray tube filament shaping device, the filament assemblies 100 at the extreme ends are referred to as the front filament assembly and the rear filament assembly, respectively.

[0075] The X-ray tube filament shaping system also includes a first wire 54 and a second wire 55 located within the vacuum chamber 5. The first end of the first wire 54 is connected to the end of the first conductive head 52 located within the vacuum chamber 5, and the second end of the first wire 54 is used to detachably connect to the molybdenum rod located on the side of the front filament assembly. The first end of the second wire 55 is connected to the end of the second conductive head 53 located within the vacuum chamber 5, and the second end of the second wire 55 is used to detachably connect to the molybdenum rod located on the side of the rear filament assembly. The X-ray tube filament shaping system also includes a vacuum pump 56 in communication with the vacuum chamber 5.

[0076] The present application also provides an X-ray tube filament shaping method, using the X-ray tube filament shaping system of the aforementioned solution. The X-ray tube filament shaping method includes:

[0077] S1. Install the molybdenum rods 102 of the assembled filament assemblies 100 in the mounting holes 201 of the upper edge portion 22 in sequence, and insert them into the limiting grooves 12 of the lower workbench 1. It should be noted that before assembling the filament assemblies 100, first loosen the clamping device 4.

[0078] S2. After the molybdenum rods 102 of the filament assemblies 100 are sequentially installed in the mounting holes 201 of the upper edge portion 22, the clamping device 4 is adjusted again so that each conductive block 3 sequentially presses the adjacent molybdenum rods 102 of the adjacent filament assemblies 100, so that the adjacent filament assemblies 100 form a series circuit;

[0079] S3. Place the X-ray tube filament shaping device into the vacuum chamber 5. Connect the two ends of the first wire 54 to the first conductive head 52 and the molybdenum rod 102 on one side of the filament assembly 100. Connect the two ends of the second wire 55 to the second conductive head 53 and the molybdenum rod 102 on the other side of the filament assembly 100. Then close the chamber door 51 of the vacuum chamber 5.

[0080] S4, using the vacuum pumping device 56 to evacuate the vacuum chamber 5, and when the vacuum degree in the vacuum chamber 5 is ≤1×10-4Pa, stop evacuating the vacuum chamber 5;

[0081] S5, connecting one end of the first conductive head 52 and the second conductive head 53 outside the vacuum chamber 5 to a power source;

[0082] S6. Set the current of the power supply according to the number of filament assemblies, and then turn on the power supply;

[0083] S7, measuring the temperature of the filament 101 from outside the vacuum chamber 5, and setting the temperature between 2200 and 3100° C. for shaping;

[0084] S8. After shaping, the filament is cooled to complete shaping.

[0085] For example, in Figure 5 When the X-ray tube filament shaping device shown is used in the shaping method of this embodiment, Figure 5 A maximum of five filament assemblies can be shaped. Accordingly, the vacuum level within the vacuum chamber 5 should be ≤1×10-4 Pa. A DC current of 5-20A should be applied to the filament assembly 100, shaped at a temperature between 2200°C and 3100°C for 5-20 seconds, and cooled for 10-20 minutes. The entire filament assembly shaping process is complete. If the number of filament assemblies increases or decreases, the DC current should be adjusted appropriately, and the shaping and cooling times can also be adjusted accordingly.

[0086] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An X-ray tube filament shaping device for shaping the filament of an assembled filament assembly, wherein the filament assembly (100) comprises a filament (101) and a molybdenum rod (102) connected to both ends of the filament (101), characterized in that: The X-ray tube filament shaping device comprises: A workbench (1) is provided with a limiting portion (11) and a limiting groove (12) on its upper surface, wherein the limiting groove (12) extends along a first direction, and the width of the limiting groove (12) is consistent with the width of the molybdenum rod (102); along a second direction, the limiting portion (11) is located behind the limiting groove (12); wherein the second direction is perpendicular to the first direction; A support frame (2) comprises a main body (21) and an upper edge portion (22) connected to the upper end of the main body (21), a matching portion is provided on the bottom side of the main body (21); the main body (21) is mounted on the workbench (1) through the matching portion and the limiting portion (11); and along the second direction, the main body (21) is located behind the limiting groove (12); the main body (21) and the upper edge portion (22) both extend a predetermined length along the first direction; along the second direction, the front side of the upper edge portion (22) exceeds the main body (21); a plurality of mounting holes (201) arranged along the first direction and passing through the upper and lower parts are provided on the portion of the front side of the upper edge portion (22) that exceeds the main body (21), and the lower part of the mounting holes (201) faces the limiting groove (12); A conductive block (3) is configured to press onto adjacent molybdenum rods (102) of adjacent filament assemblies (100) after the molybdenum rods (102) at both ends of the filament assembly (100) are sequentially inserted into the mounting hole (201) and the limiting groove (12) from top to bottom; a clamping device (4), the clamping device (4) passing through the conductive block (3) and connected to the main body (21), so that the conductive block (3) is pressed against an adjacent molybdenum rod (102) of an adjacent filament assembly (100) to achieve electrical connection; Wherein, at least the portion of the limiting groove (12), the main body (21), and the upper edge (22) in contact with the molybdenum rod (102) is made of non-conductive material.

2. The X-ray tube filament shaping device according to claim 1, characterized in that: The number of the mounting holes (201) on the upper edge portion (22) of the support frame (2) is an even number.

3. The X-ray tube filament shaping device according to claim 1, characterized in that: Two parallel clamping grooves (31) are provided on the conductive block (3); when the conductive block (3) is pressed on adjacent molybdenum rods (102) of adjacent filament assemblies (100), the adjacent molybdenum rods (102) are located in the clamping grooves (31).

4. The X-ray tube filament shaping device according to claim 3, characterized in that: The clamping groove (31) is a V-shaped groove.

5. The X-ray tube filament shaping device according to claim 1, characterized in that: The main body (21) and the upper edge (22) of the support frame (2) are an integrally formed structure.

6. The X-ray tube filament shaping device according to claim 1, characterized in that: The main body (21) and the upper edge (22) of the support frame (2) are separate assembly structures; The upper edge portion (22) is mounted on the main body portion (21) in a manner that allows it to slide and be fixed along the second direction.

7. The X-ray tube filament shaping device according to claim 6, characterized in that: The upper surface of the main body (21) is provided with a track (212) extending along the second direction, the bottom surface of the upper edge portion (22) is provided with a slide groove (221) extending through the second direction, and the upper edge portion (22) is mounted on the main body (21) in a manner that the slide groove (221) and the track (212) are slidably matched. A threaded hole (222) is provided on the upper surface of the upper edge portion (22) and penetrates into the slide groove (221), and a rotating member (223) is provided in the threaded hole (222); the rotating member (223) is rotated to screw into the slide groove (221) and press against the surface of the track (212) to limit the sliding of the upper edge portion (22) along the second direction.

8. The X-ray tube filament shaping device according to any one of claims 1 to 7, characterized in that: The main body (21) is provided with a mounting hole (201) penetrating along the second direction, and the extension length of the mounting hole (201) along the first direction is at least greater than or equal to the extension distance of all the mounting holes (201) along the first direction; A through hole (32) is provided at the middle position of each conductive block (3); The clamping device (4) comprises a bolt (41), a spacer (42), a spring (43) and a nut (44); The pad (42) is provided with through holes (421) arranged along its length direction, the pad (42) is arranged on the rear side of the mounting hole (201) of the main body (21), and the through holes (421) on the pad (42) correspond one-to-one to the through holes (32) on the front side of the conductive block (3); On each of the conductive blocks (3), the bolt (41) sequentially passes through the through hole (32) of the conductive block (3), the mounting hole (201) of the main body (21), the through hole (421) of the pad (42), and is threadedly connected to the nut (44); The spring (43) is sleeved on the bolt (41) and is located between the nut (44) and the pad (42). When the nut (44) is tightened, the spring (43) exerts a force on the nut (44) and the pad (42) to move away from each other; or the spring (43) is sleeved on the bolt (41) and is located between the pad (42) and the main body (21). When the nut (44) is tightened, the spring (43) exerts a force on the pad (42) and the main body (21). Wherein, at least the spacer (42) is made of insulating material.

9. An X-ray tube filament shaping system, characterized in that: The X-ray tube filament shaping device according to any one of claims 1 to 8 further comprises a vacuum chamber (5), wherein the vacuum chamber (5) is provided with a chamber door (51) that can be opened and closed and sealed; the X-ray tube filament shaping device is placed in the vacuum chamber (5); A first conductive head (52) and a second conductive head (53) are provided on the wall surface of the vacuum chamber (5); one end of the first conductive head (52) is located inside the vacuum chamber (5), and the other end is located outside the vacuum chamber (5); one end of the second conductive head (53) is located inside the vacuum chamber (5), and the other end is located outside the vacuum chamber (5); After the molybdenum rod (102) of the filament assembly (100) is installed in the installation hole (201) of the upper edge portion (22) on the X-ray tube filament shaping device, the filament assemblies (100) located at the extreme edges of both ends are respectively referred to as the front filament assembly and the rear filament assembly; The X-ray tube filament shaping system further comprises a first wire (54) and a second wire (55) located inside the vacuum chamber (5); a first end of the first wire (54) is connected to an end of the first conductive head (52) located inside the vacuum chamber (5), and a second end of the first wire (54) is used for detachably connecting to a molybdenum rod located on the side of the front filament assembly; a first end of the second wire (55) is connected to an end of the second conductive head (53) located inside the vacuum chamber (5), and a second end of the second wire (55) is used for detachably connecting to a molybdenum rod located on the side of the rear filament assembly; The X-ray tube filament shaping system further comprises a vacuum pumping device (56) which is in communication with the vacuum chamber (5).

10. A method for shaping an X-ray tube filament, characterized in that: Using the X-ray tube filament shaping system according to claim 9, the X-ray tube filament shaping method comprises: S1, sequentially installing the molybdenum rods (102) of the multiple assembled filament assemblies (100) in the mounting holes (201) of the upper edge portion (22), and inserting them into the limiting grooves (12) of the lower workbench (1); S2. Adjusting the clamping device (4) so ​​that each conductive block (3) sequentially presses adjacent molybdenum rods (102) of adjacent filament assemblies (100) so that the adjacent filament assemblies (100) form a series circuit; S3. Place the X-ray tube filament shaping device into the vacuum chamber (5), connect the two ends of the first wire (54) to the first conductive head (52) and the molybdenum rod (102) on one side of the filament assembly (100), respectively, connect the two ends of the second wire (55) to the second conductive head (53) and the molybdenum rod (102) on the other side of the filament assembly (100), and then close the chamber door (51) of the vacuum chamber (5); S4. Use the vacuum pumping device (56) to evacuate the vacuum chamber (5) and make the vacuum degree in the vacuum chamber (5) ≤ 1×10 -4 When Pa, stop vacuuming; S5, connecting one end of the first conductive head (52) and the second conductive head (53) outside the vacuum chamber (5) to a power source; S6. Set the current of the power supply according to the number of filament assemblies, and then turn on the power supply; S7, measuring the temperature of the filament (101) from outside the vacuum chamber (5), and setting the temperature between 2200°C and 3100°C for shaping; S8. After shaping, the filament is cooled to complete shaping.

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