An X-ray tube focus calibrator and a calibration method using the device

Abstract

The present invention provides an X-ray tube focus calibrator and a calibration method using the device, including a calibration box with a box cover, and further including: a conical lifting seat, which is placed in the calibration box and can rotate intermittently, and a plurality of mounting seats for mounting the X-ray tube are installed on the circumference of the conical lifting seat, and the mounting seats can be switched from a vertical state to a horizontal state; a film winding reel and a film rewinding reel, which are fixedly installed on both sides of the calibration box, and a film channel is arranged in the side wall of the calibration box; an imaging observation tube, which is used for continuously photographing the focus of the X-ray tube. The device can complete the calibration process of multiple X-ray tube foci, obtain focus position, shape, size, and density parameters, can calibrate transmissive, reflective, and X-ray tubes of different sizes, has high versatility, and can also directly adhere the photographed film to the window, with accurate calibration of the focus and facilitating subsequent installation and debugging.

Description

Technical Field

[0001] The present invention relates to the technical field of X-ray tube measurement, and particularly to an X-ray tube focus calibrator and a calibration method using the device. Background Art

[0002] The shape and size of the X-ray tube focus are the main problems encountered in the cathode design of the X-ray tube, and ultimately determine the shape, size, installation position of the filament and the tilt angle of the anode target surface. Therefore, in production, the X-ray tube focus is one of the important indicators of product quality. The focus size, shape, density and clarity will directly affect the life of the X-ray tube and the image. In order to ensure the quality of the X-ray tube, each X-ray tube focus needs to be photographed. If it is found that the focus size, shape, density and clarity of the product do not meet the requirements, process technology improvement should be carried out, and it should be used as a means of product quality inspection.

[0003] During the process of calibrating the focus by the existing calibrator, a focus camera is used to photograph the focus. However, only one X-ray tube can be calibrated at a time. After each calibration is completed, the film needs to be replaced and preparatory work needs to be done. Moreover, the universality for calibrating transmissive, reflective and X-ray tubes of different sizes is low. After shooting, the observation of the focus is not direct enough, and the calibration of the focus position is inaccurate. Summary of the Invention

[0004] In view of the above problems, the present invention provides an X-ray tube focus calibrator and a calibration method using the device. The device can complete the calibration process of multiple X-ray tube foci, obtain focus position, shape, size and density parameters, can calibrate transmissive, reflective and X-ray tubes of different sizes, has high universality, and can directly adhere the photographed film to the window, accurately calibrate the focus, and is convenient for subsequent installation and debugging.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] An X-ray tube focus calibrator includes a calibration box with a box cover, and further includes:

[0007] A conical lifting seat is placed in the calibration box and can rotate intermittently. A plurality of mounting seats for mounting the X-ray tube are installed on the circumference of the conical lifting seat, and the mounting seat can be switched from a vertical state to a horizontal state;

[0008] A film supply reel and a film take-up reel are fixedly installed on both sides of the calibration box. A film channel is provided in the side wall of the calibration box, and the film of the film supply reel passes through the film channel and is taken up by the film take-up reel;

[0009] The imaging observation tube is installed at the rear side of the inspection box, with a focus camera installed inside and a film port at the rear end for film to pass through, which is used to continuously shoot the focus of the X-ray tube;

[0010] The film cutting mechanism is installed on the front side of the verification box, including a cutting channel opened on the front side of the verification box for the film to pass through, and a cutting cylinder corresponding to the cutting channel. A cutting seat that can be raised and lowered and cooperates with the cutting cylinder is also installed in the cutting channel. A glue-dispensing component is installed in the cutting seat. An adsorption push plate that can push the cut film to stick it on the X-ray tube window is installed in the cutting cylinder.

[0011] Preferably, a fixing frame is fixedly installed on the circumferential side wall of the conical lifting seat, a bracket is rotatably connected to the fixing frame via a rotating shaft, the top of the bracket is fixedly connected to the clamping seat, a gear is fixed on the rotating shaft, a plurality of racks that can slide up and down along the inclined surface of the conical lifting seat are slidably installed on the circumferential side wall of the conical lifting seat, the racks are meshed with corresponding gears, and a pushing component that can synchronously drive the plurality of racks to slide up and down is installed in the conical lifting seat.

[0012] Preferably, the pushing assembly includes a first electric push rod fixedly installed in a conical lifting seat, and a plurality of telescopic arms are fixedly installed on the circumferential side wall of the telescopic end of the first electric push rod. The telescopic arms are radially arranged, and the telescopic ends are fixedly connected to corresponding racks. The circumferential side wall of the conical lifting seat is provided with a plurality of strip openings for the corresponding telescopic ends to pass through.

[0013] Preferably, a second electric push rod is rotatably mounted on the inner bottom of the calibration box, a motor is mounted on the bottom of the calibration box, an output end of the motor extends into the calibration box and is transmitted to the second electric push rod through a pair of transmission gears.

[0014] Preferably, a card-mounting slot is provided in the card-mounting seat, and a plurality of grooves are provided on the circumferential inner wall of the card-mounting slot. A telescopic airbag is installed in the groove, and an arc-shaped stop block extending out of the slot is fixed to the telescopic end of the telescopic airbag. An air pump connected to the plurality of telescopic airbags is installed on the top of the conical lifting seat.

[0015] Preferably, a pressure plate is elastically connected to the outer end of the imaging observation tube via a first spring, and the pressure plate cooperates with the film port to flatten the film.

[0016] Preferably, a first cylinder is fixedly installed on the front side of the inspection box, a support plate is fixed to the telescopic end of the first cylinder, the end of the cutting cylinder is fixedly installed on the support plate, a second cylinder is also fixedly installed on the support plate, the telescopic end of the second cylinder extends into the cutting cylinder and is fixedly connected to the adsorption push plate through an elastic rod, and a plurality of negative pressure adsorption holes are circumferentially provided on the side wall of the adsorption push plate.

[0017] Preferably, a vertical sealing slideway communicating with the cutting channel is further provided on the front side of the calibration box. A third cylinder is installed in the vertical sealing slideway. The telescopic end of the third cylinder is fixedly connected to the cutting seat. An annular knife groove adapted to the cutting cylinder is provided on the side wall of the cutting seat.

[0018] Preferably, the dispensing assembly includes dispensing holes circumferentially distributed on the side wall of the cutting seat. The dispensing holes are located inside the annular knife groove. A dispensing tube is arranged in each dispensing hole. An installation cavity communicating with a plurality of dispensing holes is provided in the cutting seat. A pull plate is elastically installed in the installation cavity through a second spring. The tail ends of the plurality of dispensing tubes extend into the installation cavity and are fixedly connected to the pull plate. A trigger switch matched with the cutting cylinder is embedded at the bottom of the annular knife groove. The trigger switch is elastically connected to the second spring. A glue cylinder is fixedly installed in the installation cavity. A glue suction tube and a glue outlet tube are connected to the end of the glue cylinder. One-way valves are installed in both the glue suction tube and the glue outlet tube. The glue outlet tube is connected to the plurality of dispensing tubes. A pull rod extending into the glue cylinder is fixedly connected to the side wall of the pull plate. A piston is fixed to the extending end of the pull rod.

[0019] The present invention also provides a method for calibrating the focus of an X-ray tube, including the following steps:

[0020] S1. For a reflective X-ray tube, its end is clamped in a plurality of clamping seats in a vertical state. For a transmissive X-ray tube, its cathode end is clamped in a clamping seat in a horizontal state, so that the X-rays emitted by the two are directed towards the circumferential inner wall of the calibration box. The conical lifting seat lifts and lowers, and the center point of the X-ray tube beam exit window is aligned with the center of the imaging observation tube to meet the calibration of X-ray tubes of different sizes;

[0021] S2. The conical lifting seat rotates, driving the clamped plurality of X-ray tubes to intermittently pass through the imaging observation tube. At the same time, the film intermittently passes through the film port in the form of unwinding and rewinding. The focus captured by the focus camera is presented on the film to obtain the focus position, shape, size, and density parameters;

[0022] S3. After the calibration of a plurality of X-ray tubes is completed, they then rotate through the cutting channel. After the film passes through a section of the film channel, the image is presented, and then it intermittently passes through the cutting channel, corresponding to the X-ray tubes one by one;

[0023] S4. The cutting cylinder enters the cutting channel, cooperates with the annular knife groove to cut out a circular film, and enters the cylinder to be adsorbed by the adsorption push plate. Subsequently, the cutting cylinder triggers the trigger switch to energize the second spring, causing it to contract, pushing out multiple dispensing tubes through the pull plate. At the same time, the piston is pulled by the pull rod to extrude the glue and apply it circumferentially to the edge of the circular film. The cutting seat descends, and the adsorption push plate pushes the circular film after dispensing into the calibration box, pastes it on the beam outlet window of the corresponding X-ray tube, visually determines the focal point position, and the shape, size, and density parameters are directly attached to the tube, facilitating subsequent installation and debugging.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. By installing a calibration box, a film unwinding reel, a film rewinding reel, a film channel, an imaging observation cylinder, a conical lifting seat, and multiple clamping seats, only need to clamp multiple X-ray tubes on multiple clamping seats. The conical lifting seat rotates to drive the clamped multiple X-ray tubes to intermittently pass through the imaging observation cylinder. At the same time, the film intermittently passes through the film port in the form of unwinding and rewinding. The focal points captured by the focal point camera are presented on the film to obtain the focal point position, shape, size, and density parameters, and the calibration process of the focal points of multiple X-ray tubes can be completed without multiple film replacements and preparatory work.

[0026] 2. By installing a conical lifting seat, gears, racks, and a pushing component, for a reflective X-ray tube, its end is clamped in multiple vertically arranged clamping seats. For a transmissive X-ray tube, its cathode end is clamped in a horizontally arranged clamping seat. To switch the clamping seats, only need to start the first electric push rod to drive the multiple telescopic arms to lift and lower, thereby driving the multiple racks to slide up and down along the inclined plane, and finally driving the reverse switching of the clamping seats through the gears and the rotating shaft. The conical lifting seat is adjusted up and down by the second electric push rod to align the center point of the beam outlet window of the X-ray tube with the center of the imaging observation cylinder, meeting the calibration requirements of X-ray tubes of different sizes and having strong versatility.

[0027] 3. By installing a film cutting mechanism and a dispensing component, the cutting cylinder enters the cutting channel, cooperates with the annular knife groove to cut out a circular film, and enters the cylinder to be adsorbed by the adsorption push plate. Subsequently, the cutting cylinder triggers the trigger switch to energize the second spring, causing it to contract, pushing out multiple dispensing tubes through the pull plate. At the same time, the piston is pulled by the pull rod to extrude the glue and apply it circumferentially to the edge of the circular film. The cutting seat descends, and the adsorption push plate pushes the circular film after dispensing into the calibration box, pastes it on the beam outlet window of the corresponding X-ray tube, visually determines the focal point position, and the shape, size, and density parameters are directly attached to the tube, facilitating subsequent installation and debugging. Description of the Drawings

[0028] Figure 1 is a three-dimensional view of the present invention;

[0029] Figure 2 Is the top view sectional view of the present invention;

[0030] Figure 3 Is the three-dimensional schematic diagram of the conical lifting seat proposed by the present invention;

[0031] Figure 4 Is the sectional view of the conical lifting seat proposed by the present invention;

[0032] Figure 5 Is Figure 2 The enlarged schematic diagram of the structure at A in

[0033] Figure 6 Is the sectional view schematic diagram of the clamping groove proposed by the present invention;

[0034] Figure 7 Is the three-dimensional diagram of the cutting seat proposed by the present invention;

[0035] Figure 8 Is the sectional view schematic diagram of the cutting seat proposed by the present invention;

[0036] Figure 9 Is the three-dimensional diagram of the cutting cylinder proposed by the present invention;

[0037] Figure 10 Is the sectional view schematic diagram of the cutting cylinder proposed by the present invention.

[0038] In the figure: 1 calibration box, 2 box cover, 3 film feeding reel, 4 film winding reel, 5 vertical sealing slideway, 6 third cylinder, 7 abutting plate, 8 second cylinder, 9 first cylinder, 10 cutting cylinder, 11 cutting seat, 12 imaging observation cylinder, 13 lead layer, 14 film channel, 15 film, 16 cutting channel, 17 clamping seat, 18 clamping groove, 19 conical lifting seat, 20 air pump, 21 support, 22 gear, 23 rack, 24 first electric push rod, 25 telescopic arm, 26 strip-shaped opening, 27 second electric push rod, 28 driving gear, 29 motor, 30 arc-shaped abutting block, 31 telescopic airbag, 32 groove, 33 focus camera, 34 film port, 35 pressing plate, 36 first spring, 37 annular knife groove, 38 trigger switch, 39 glue dispensing hole, 40 glue dispensing tube, 41 installation cavity, 42 glue cylinder, 43 piston, 44 pull rod, 45 pull plate, 46 second spring, 47 negative pressure adsorption hole, 48 adsorption push plate, 49 elastic rod, 50 fixing frame. Specific embodiments

[0039] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0041] Referring to Figures 1-10 , an X-ray tube focus calibrator, including a calibration box 1 provided with a box cover 2, further including:

[0042] A conical lifting seat 19, placed inside the calibration box 1 and capable of intermittent rotation. A plurality of mounting seats 17 for mounting the X-ray tube are installed on the circumference of the conical lifting seat 19, and the mounting seat 17 can be switched from a vertical state to a horizontal state.

[0043] Specifically, a fixing frame 50 is fixedly installed on the circumferential side wall of the conical lifting seat 19. A support 21 is rotatably connected to the fixing frame 50 through a rotating shaft. The top of the support 21 is fixedly connected to the mounting seat 17. A gear 22 is fixed on the rotating shaft. A plurality of racks 23 that can slide up and down along the inclined surface of the conical lifting seat 19 are slidably installed on the circumferential side wall of the conical lifting seat 19. The racks 23 are engaged with the corresponding gears 22. A pushing assembly for synchronously driving the plurality of racks 23 to slide up and down is installed inside the conical lifting seat 19. The pushing assembly includes a first electric push rod 24 fixedly installed inside the conical lifting seat 19. A plurality of telescopic arms 25 are fixedly installed on the circumferential side wall of the telescopic end of the first electric push rod 24. The telescopic arms 25 are radially arranged, and the telescopic end is fixedly connected to the corresponding rack 23. A plurality of strip-shaped openings 26 for the corresponding telescopic ends to pass through are provided on the circumferential side wall of the conical lifting seat 19. Starting the first electric push rod 24 drives the plurality of telescopic arms 25 to lift, thereby driving the plurality of racks 23 to slide up and down along the inclined surface, and finally driving the mounting seat 17 to switch in the reverse direction through the gear 22 and the rotating shaft.

[0044] Further, a second electric push rod 27 is rotatably installed on the inner bottom of the calibration box 1, and a motor 29 is installed at the bottom of the calibration box 1. The output end of the motor 29 extends into the calibration box 1 and is driven by a pair of transmission gears 28 to drive the second electric push rod 27 to rotate. Then, the conical lifting seat 19 is driven to rotate, driving the mounted multiple X-ray tubes to intermittently pass through the imaging observation cylinder 12.

[0045] In order to realize the clamping process, a clamping groove 18 is provided in the clamping seat 17. A plurality of grooves 32 are provided on the circumferential inner wall of the clamping groove 18. A telescopic airbag 31 is installed in the groove 32. An arc-shaped abutting block 30 extending out of the notch is fixed at the telescopic end of the telescopic airbag 31. An air pump 20 connected to the plurality of telescopic airbags 31 is installed at the top of the conical lifting seat 19. The end of the X-ray tube is inserted into the clamping groove 18. The air pump 20 is started to simultaneously inflate the plurality of telescopic airbags 31 to make them expand, driving the arc-shaped abutting blocks 30 to extend out of the grooves. The plurality of arc-shaped abutting blocks 30 simultaneously abut out to center and clamp the X-ray tube, completing the clamping process.

[0046] A film unwinding reel 3 and a film winding reel 4 are fixedly installed on both sides of the calibration box 1. A film channel 14 is provided in the side wall of the calibration box 1. The film 15 of the film unwinding reel 3 passes through the film channel 14 and is wound by the film winding reel 4. The film 15 intermittently passes through the film opening 34 in the form of unwinding and winding. The focus position, shape, size, and density parameters are presented on the film 15. After the film 15 passes through a section of the film channel 14, the image is presented.

[0047] The imaging observation cylinder 12 passes through the rear side of the calibration box 1. A focus camera 33 is installed inside, and a film opening 34 for the film 15 to pass through is provided at the rear end, which is used for continuously photographing the X-ray tube focus. A pressing plate 35 is elastically connected to the outer end of the imaging observation cylinder 12 through a first spring 36. The pressing plate 35 cooperates with the film opening 34 to press the film 15 flat.

[0048] The film cutting mechanism is installed on the front side of the calibration box 1, including a cutting channel 16 opened on the front side of the calibration box 1 for the film 15 to pass through, and a cutting cylinder 10 corresponding to the cutting channel 16. A cutting seat 11 that can be lifted and cooperates with the cutting cylinder 10 is also installed in the cutting channel 16. A glue dispensing component is installed in the cutting seat 11, and an adsorption push plate 48 that can push and paste the cut film on the X-ray tube window is installed in the cutting cylinder 10.

[0049] Further, a first cylinder 9 is fixedly installed on the front side of the calibration box 1. A pressing plate 7 is fixed to the telescopic end of the first cylinder 9. The end of the cutting cylinder 10 is fixedly installed on the pressing plate 7. A second cylinder 8 is also fixedly installed on the pressing plate 7. The telescopic end of the second cylinder 8 extends into the cutting cylinder 10 and is fixedly connected to the adsorption pushing plate 48 through an elastic rod 49. A plurality of negative pressure adsorption holes 47 are circumferentially arranged on the side wall of the adsorption pushing plate 48. The negative pressure adsorption holes 47 generate negative pressure, which can adsorb the edge of the circular film.

[0050] On the front side of the calibration box 1, there is also a vertical sealing slideway 5 communicating with the cutting channel 16. A third cylinder 6 is installed in the vertical sealing slideway 5. The telescopic end of the third cylinder 6 is fixedly connected to the cutting seat 11. An annular knife groove 37 adapted to the cutting cylinder 10 is provided on the side wall of the cutting seat 11. The first cylinder 9 is started, and the cutting cylinder 10 is driven by the pressing plate 7 to enter the cutting channel 16. At this time, the corresponding film 15 is on the surface of the cutting seat 11. The cutting cylinder 10 cooperates with the annular knife groove 37 to cut out a circular film.

[0051] Specifically, the dispensing assembly includes dispensing holes 39 arranged circumferentially on the side wall of the cutting seat 11. The dispensing holes 39 are located inside the annular knife groove 37. Dispensing tubes 40 are arranged in the dispensing holes 39. An installation cavity 41 communicating with a plurality of dispensing holes 39 is provided in the cutting seat 11. A pull plate 45 is elastically installed in the installation cavity 41 through a second spring 46. The tails of the plurality of dispensing tubes 40 extend into the installation cavity 41 and are fixedly connected to the pull plate 45. A trigger switch 38 adapted to the cutting cylinder 10 is embedded at the bottom of the annular knife groove 37. The trigger switch 38 is elastically connected to the second spring 46. A glue cylinder 42 is also fixedly installed in the installation cavity 41. The end of the glue cylinder 42 is connected with a glue suction tube and a glue outlet tube. One-way valves are installed in both the glue suction tube and the glue outlet tube. The glue outlet tube is connected to the plurality of dispensing tubes 40. A pull rod 44 extending into the glue cylinder 42 is fixedly connected to the side wall of the pull plate 45. A piston 43 is fixed to the extended end of the pull rod 44. When the cutting cylinder 10 triggers the trigger switch 38, the second spring 46 is electrified and contracts, pushing the plurality of dispensing tubes 40 out of the dispensing holes 39 through the pull plate 45. At the same time, the piston 43 is pulled through the pull rod 44 to extrude the glue and apply it circumferentially on the edge of the circular film.

[0052] Insert the end of the X-ray tube into the clamping groove 18, start the air pump 20, and simultaneously inflate a plurality of telescopic air bags 31 to make them expand, driving the arc-shaped abutting blocks 30 to extend out of the groove. The plurality of arc-shaped abutting blocks 30 synchronously abut to center and clamp the X-ray tube, completing the clamping process.

[0053] For a reflective X-ray tube, its end is clamped in a plurality of clamping seats 17 in a vertical state. For a transmissive X-ray tube, its end, the cathode end, is clamped in a clamping seat 17 in a horizontal state. To switch the clamping seat 17, just start the first electric push rod 24 to drive the lifting of multiple telescopic arms 25, and then drive multiple racks 23 to slide up and down along the inclined plane. Finally, drive the reverse switching of the clamping seat 17 through the gear 22 and the rotating shaft. The conical lifting seat 19 is lifted and adjusted by the second electric push rod 27 to align the center point of the X-ray tube beam output window with the center of the imaging observation tube 12, meeting the calibration of X-ray tubes of different sizes and having strong versatility.

[0054] Start the motor 29 to drive the second electric push rod 27 to rotate through a pair of transmission gears, and then drive the conical lifting seat 19 to rotate, driving the multiple X-ray tubes clamped thereon to intermittently pass through the imaging observation tube 12. At the same time, the film 15 intermittently passes through the film opening 34 in the form of unreeling and reeling. The focal point captured by the focal point camera 33 is presented on the film 15 to obtain the focal point position, shape, size, and density parameters, and the calibration process of the focal points of multiple X-ray tubes can be completed without multiple film replacements and preparatory work.

[0055] After the calibration of multiple X-ray tubes is completed, it then passes through the cutting channel 16. After the film 15 passes through a section of the film channel 14, the image presentation is completed. It intermittently passes through the cutting channel 16 and corresponds to the X-ray tubes one by one. Start the first air cylinder 9 to drive the cutting cylinder 10 into the cutting channel 16 through the pressing plate 7. At this time, the corresponding film 15 is on the surface of the cutting seat 11. The cutting cylinder 10 cooperates with the annular knife groove 37 to cut out a circular film. The circular film enters the cutting cylinder 10 and is adsorbed by the adsorption push plate 48. Then the cutting cylinder 10 triggers the trigger switch 38 to energize the second spring 46 to contract, pushing multiple glue dispensing tubes 40 out of the glue dispensing holes 39 through the pull plate 45. At the same time, the piston 43 is pulled by the pull rod 44 to extrude the glue and apply it circumferentially on the edge of the circular film. After glue dispensing, the cutting cylinder 10 resets. Start the third air cylinder 6 to drive the cutting seat 11 to descend, and start the second air cylinder 8 to push the adsorption push plate 48 to push the glue-dispensed circular film into the calibration box 1 and paste it on the beam output window of the corresponding X-ray tube. The center point of the circular film corresponds to the center point of the window, and thus the focal point position can be visually judged, and the shape, size, and density parameters are directly attached to the tube, facilitating subsequent installation and debugging.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, 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. An X-ray tube focus checker, comprising a checking box (1) provided with a box cover (2), characterized in that, Also includes: A conical lifting seat (19) is placed in the inspection box (1) and can rotate intermittently. A plurality of mounting seats (17) for mounting X-ray tubes are mounted on the circumference of the conical lifting seat (19). The mounting seats (17) can be switched from a vertical state to a horizontal state. A film unwinding drum (3) and a film winding drum (4) are fixedly mounted on both sides of the calibration box (1). A film passage (14) is provided in the side wall of the calibration box (1). The film (15) of the film unwinding drum (3) passes through the film passage (14) and is wound up by the film winding drum (4). An imaging observation tube (12) is arranged on the rear side of the inspection box (1), a focus camera (33) is installed inside, and a film port (34) is provided at the rear end for the film (15) to pass through, for continuously photographing the focus of the X-ray tube; The film cutting mechanism is installed on the front side of the calibration box (1), and includes a cutting channel (16) opened on the front side of the calibration box (1) for the film (15) to pass through, and a cutting cylinder (10) corresponding to the cutting channel (16), wherein a cutting seat (11) which can be raised and lowered and cooperates with the cutting cylinder (10) is also installed in the cutting channel (16), a glue dispensing component is installed in the cutting seat (11), and an adsorption push plate (48) is installed in the cutting cylinder (10) for pushing the cut film to be pasted on the X-ray tube window.

2. The X-ray tube focus calibrator according to claim 1, wherein A fixing frame (50) is fixedly mounted on the circumferential side wall of the conical lifting seat (19); a bracket (21) is rotatably connected to the fixing frame (50) via a rotating shaft; the top of the bracket (21) is fixedly connected to the clamping seat (17); a gear (22) is fixed to the rotating shaft; a plurality of racks (23) that can slide up and down along the inclined surface of the conical lifting seat (19) are slidably mounted on the circumferential side wall of the conical lifting seat (19); the racks (23) are meshed with corresponding gears (22); and a pushing assembly that can synchronously drive the plurality of racks (23) to slide up and down is installed in the conical lifting seat (19).

3. The X-ray tube focus calibrator according to claim 2, wherein, The pushing assembly comprises a first electric push rod (24) fixedly mounted in a conical lifting seat (19); a plurality of telescopic arms (25) are fixedly mounted on the circumferential side wall of the telescopic end of the first electric push rod (24); the telescopic arms (25) are radially arranged, and the telescopic ends are fixedly connected to corresponding racks (23); and a plurality of strip openings (26) are provided on the circumferential side wall of the conical lifting seat (19) for the corresponding telescopic ends to pass through.

4. An X-ray tube focus calibrator according to claim 1, characterized in that, A second electric push rod (27) is rotatably mounted on the inner bottom of the calibration box (1), and a motor (29) is mounted on the bottom of the calibration box (1). The output end of the motor (29) extends into the calibration box (1) and is transmitted to the second electric push rod (27) via a pair of transmission gears (28).

5. An X-ray tube focal spot calibrator according to claim 1, characterized in that, The card holder (17) is provided with a card slot (18). The circumferential inner wall of the card slot (18) is provided with a plurality of grooves (32). An expansion airbag (31) is installed in the groove (32). An arc-shaped abutting block (30) extending out of the notch is fixed at the expansion end of the expansion airbag (31). An air pump (20) connected to a plurality of expansion airbags (31) is installed at the top of the conical lifting seat (19).

6. The X-ray tube focal spot calibrator according to claim 1, characterized in that, A pressing plate (35) is elastically connected inside the outer end of the imaging observation tube (12) through a first spring (36). The pressing plate (35) cooperates with the film opening (34) to press the film (15) flat.

7. An X-ray tube focus checker according to claim 1, characterized in that, A first air cylinder (9) is fixedly installed on the front side of the calibration box (1). A pressing plate (7) is fixed at the expansion end of the first air cylinder (9). The end of the cutting cylinder (10) is fixedly installed on the pressing plate (7). A second air cylinder (8) is also fixedly installed on the pressing plate (7). The expansion end of the second air cylinder (8) extends into the cutting cylinder (10) and is fixedly connected to an adsorption pushing plate (48) through an elastic rod (49). A plurality of negative pressure adsorption holes (47) are circumferentially arranged on the side wall of the adsorption pushing plate (48).

8. An X-ray tube focus calibrator according to claim 1, characterized in that, A vertical sealing slideway (5) communicated with the cutting channel (16) is further provided on the front side of the calibration box (1). A third air cylinder (6) is installed in the vertical sealing slideway (5). The expansion end of the third air cylinder (6) is fixedly connected to the cutting seat (11). An annular knife groove (37) adapted to the cutting cylinder (10) is provided on the side wall of the cutting seat (11).

9. The X-ray tube focal spot calibrator according to claim 8, characterized in that, The dispensing assembly includes dispensing holes (39) arranged circumferentially on the side wall of the cutting seat (11). The dispensing holes (39) are located inside the annular knife groove (37). A dispensing tube (40) is arranged in the dispensing hole (39). An installation cavity (41) communicated with a plurality of dispensing holes (39) is arranged in the cutting seat (11). A pulling plate (45) is elastically installed in the installation cavity (41) through a second spring (46). The tail ends of a plurality of dispensing tubes (40) extend into the installation cavity (41) and are fixedly connected to the pulling plate (45). A trigger switch (38) adapted to the cutting cylinder (10) is embedded at the bottom of the annular knife groove (37). The trigger switch (38) is elastically connected to the second spring (46). A glue cylinder (42) is also fixedly installed in the installation cavity (41). The end of the glue cylinder (42) is connected with a glue suction tube and a glue outlet tube. One-way valves are installed in both the glue suction tube and the glue outlet tube. The glue outlet tube is connected with a plurality of dispensing tubes (40). A pull rod (44) extending into the glue cylinder (42) is fixedly connected to the side wall of the pulling plate (45). A piston (43) is fixed at the extending end of the pull rod (44).

10. A method for calibrating the focus of an X-ray tube focus calibrator as described in claim 9, characterized in that, Including the following steps: S1. For a reflective X-ray tube, its end is clamped within a plurality of clamping seats (17) in a vertical state. For a transmissive X-ray tube, its cathode end is clamped within a clamping seat (17) in a horizontal state, so that the X-rays emitted by both are directed towards the circumferential inner wall of the calibration box (1). The conical lifting seat (19) is lifted or lowered to align the center point of the X-ray tube beam exit window with the center of the imaging observation tube (12), meeting the calibration requirements for X-ray tubes of different sizes. S2. The conical lifting seat (19) rotates, driving the clamped multiple X-ray tubes to intermittently pass by the imaging observation tube (12). At the same time, the film (15) intermittently passes through the film opening (34) in the form of unwinding and rewinding. The focus captured by the focus camera (33) is presented on the film (15) to obtain the parameters of the focus position, shape, size, and density. S3. After the calibration of multiple X-ray tubes is completed, they then pass through the cutting channel (16). After the film (15) passes through a section of the film channel (14), the image is presented, and it intermittently passes through the cutting channel (16), corresponding one by one to the X-ray tubes. S4. The cutting cylinder (10) enters the cutting channel (16) and cooperates with the annular knife groove (37) to cut out a circular film, which enters the cylinder and is adsorbed by the adsorption push plate (48). Subsequently, the cutting cylinder (10) triggers the trigger switch (38) to energize the second spring (46) to contract, pushing out multiple dispensing tubes (40) through the pull plate (45). At the same time, the piston (43) is pulled by the pull rod (44) to extrude the glue and apply it circumferentially to the edge of the circular film. The cutting seat (11) descends, and the adsorption push plate (48) pushes the circular film with the applied glue into the calibration box (1) and pastes it on the beam exit window of the corresponding X-ray tube, visually determining the focus position, and the shape, size, and density parameters are directly attached to the tube, facilitating subsequent installation and debugging.

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