CN113281360A - Sample fixing device of cone beam CT imaging equipment - Google Patents
Sample fixing device of cone beam CT imaging equipment Download PDFInfo
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- CN113281360A CN113281360A CN202110743179.XA CN202110743179A CN113281360A CN 113281360 A CN113281360 A CN 113281360A CN 202110743179 A CN202110743179 A CN 202110743179A CN 113281360 A CN113281360 A CN 113281360A
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- rotating
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- rotating plate
- fixing device
- plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
Abstract
The invention provides a sample fixing device of cone beam CT imaging equipment, which comprises a fixed frame and a rotating plate arranged on the fixed frame, wherein two ends of the rotating plate are in hinged fit with the fixed frame, a rotating unit is arranged on the rotating plate, the output end of the rotating unit is fixedly connected with a fixed shaft basically perpendicular to the rotating plate, a sample is fixed on the fixed shaft, and the rotating plate can rotate relative to the fixed frame to change the relative angle between the fixed shaft and the fixed frame. The invention has the advantages that: the sample is installed through the fixed shaft, so that the sample can be conveniently and quickly replaced and repeated experiments can be carried out, in addition, after the sample is installed again, the pitch angle of the rotating plate can be adjusted to enable the plane of the fixed shaft and the plane of the ray source to be parallel, the adjustment of the pose of the sample can be conveniently realized, and the sample is controlled to rotate by taking the fixed shaft as a rotating shaft through the rotating unit during working, so that the high-precision three-dimensional imaging of the sample can be realized.
Description
Technical Field
The invention relates to the technical field of cone beam CT imaging, in particular to a sample fixing device of cone beam CT imaging equipment.
Background
The X-ray-based cone-beam CT imaging technology can display the three-dimensional appearance of an object to be detected, clearly reflects the internal structure of the object and can know the defects among electronic packaging internal components, connecting lines and welding spots. Along with the detected object is smaller and higher in required precision, the cone beam CT imaging module is added in the high-precision X-ray DR imaging system, the technical advantages are remarkable, the internal structure image of the object with the micro-nano resolution can be obtained in a lossless mode, and the X-ray DR imaging system has the advantages of being ultrahigh in spatial resolution and time resolution, high in penetrability, rich in contrast mechanism and the like.
In order to improve the detection efficiency, the cone-beam CT imaging apparatus requires that the sample can be repeatedly mounted on the fixing device and can maintain a consistent posture, and the horizontal axis of the sample is located above the radiation source and parallel to the plane of the radiation source, and the sample can rotate on the horizontal axis to realize high-magnification and high-precision three-dimensional imaging.
However, most of the existing fixing devices can only realize the fixing and rotation of the sample, but after the sample is installed, the relative parallelism between the sample and a ray source is difficult to ensure, the invention patent application with the publication number of CN103784160A discloses a correction device and a correction method for the geometric position of a cone beam CT system, the correction of the posture of the sample is realized through a horizontal rod and a vertical rod on the correction device, but the scheme has a complex structure, the freedom degrees exist in the horizontal direction and the vertical direction, the possibility of the deflection of the sample is increased, the complicated calculation is needed for the posture correction, the purpose of quick correction cannot be realized, and a large amount of time is wasted on the posture correction of the sample when the sample is frequently replaced for testing, thereby affecting the working efficiency.
Disclosure of Invention
The invention aims to provide a sample fixing device of cone-beam CT imaging equipment, which is convenient for adjusting the relative parallelism between a sample and a ray source and can drive the sample to rotate.
The invention solves the technical problems through the following technical scheme: the utility model provides a cone beam CT imaging device's sample fixing device, includes fixed frame and sets up the rotor plate on fixed frame, the rotor plate both ends and the articulated cooperation of fixed frame install the rotation unit on the rotor plate, the output fixedly connected with of rotation unit and rotor plate vertical fixed axle basically, the sample is fixed in on the fixed axle, the rotor plate can rotate the relative angle who changes fixed axle and fixed frame relative to the fixed frame.
The invention can conveniently and rapidly replace the sample and repeat the experiment by installing the sample through the fixed shaft, and can keep the fixed shaft parallel to the plane of the ray source by adjusting the pitch angle of the rotating plate after the sample is installed again, thereby conveniently realizing the adjustment of the pose of the sample.
Preferably, the fixed frame comprises two pairs of parallel mounting plates and connecting plates, the mounting plates are perpendicular to the surfaces of the connecting plates, the mounting plates and the connecting plates form a rectangular structure, and two ends of the rotating plate are limited between the opposite surfaces of the connecting plates on two sides.
Preferably, the two ends of the rotating plate are respectively and coaxially provided with a rotating pin, and the rotating pins are in hinged fit with the connecting plate.
Preferably, the mounting plate close to the rotating plate is connected with a telescopic unit, and the telescopic end of the telescopic unit is matched with one side, far away from the rotating pin, of the surface of the rotating plate.
Preferably, the mounting plate provided with the telescopic unit is fixedly connected with a return spring matched with the rotating plate, and the return spring is in an open state within the rotating range of the rotating plate.
Preferably, the telescopic unit is a differential screw pair, and an end of the differential screw pair abuts against the rotating plate.
Preferably, the mounting plate and the rotating plate are respectively provided with a pull rod, the pull rod is provided with a limiting hole, and two ends of the reset spring are respectively provided with a hook which penetrates through the limiting hole.
Preferably, two ends of the rotating plate are respectively provided with a swinging pin, and the connecting plates on two sides are respectively provided with an adjusting groove matched with the swinging pin.
Preferably, the driving end and the output end of the rotating unit are respectively positioned at two sides of the rotating plate, the driving end of the rotating unit is fixedly connected with the rotating plate, the output end of the rotating unit is fixedly connected with a drill chuck, and the fixed shaft is fixed in the drill chuck.
Preferably, a photoelectric sensor is arranged on the CT imaging equipment, a blocking block is arranged on the fixed frame, and when the fixed frame is arranged on the CT imaging equipment, the blocking block can block the photoelectric sensor quickly.
The sample fixing device of the cone beam CT forming equipment has the advantages that: the sample is installed through the fixed shaft, so that the sample can be conveniently and quickly replaced and repeated experiments can be carried out, in addition, after the sample is installed again, the pitch angle of the rotating plate can be adjusted to enable the plane of the fixed shaft and the plane of the ray source to be parallel, the adjustment of the pose of the sample can be conveniently realized, and the sample is controlled to rotate by taking the fixed shaft as a rotating shaft through the rotating unit during working, so that the high-precision three-dimensional imaging of the sample can be. The rotation angle of the driving rotating plate can be accurate through the telescopic unit, the imaging quality is improved, the rotation range of the rotating plate is limited through the matching of the adjusting groove and the swing pin, the fixing shaft is installed through the drill chuck, the use is convenient and fast, and the fixing shaft is suitable for fixing shafts of various sizes.
Drawings
FIG. 1 is a schematic diagram of a sample holder of a cone-beam CT imaging apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a rotating plate of a sample fixing device of a cone-beam CT imaging apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a fixing frame of a sample fixing device of a cone-beam CT imaging apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a rotation unit and a telescopic unit of a sample fixing device of a cone beam CT imaging apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a connection plate of a sample fixing device of a cone-beam CT imaging apparatus according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a rotating unit of a sample fixing device of a cone-beam CT imaging apparatus according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below in detail and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides a sample fixing device for a cone beam CT imaging apparatus, including a fixed frame 1 and a rotating plate 2 disposed on the fixed frame 1, two ends of the rotating plate 2 are hinged to the fixed frame 1, and with reference to fig. 2, a rotating unit 4 is mounted on the rotating plate 2, an output end of the rotating unit 4 is fixedly connected to a fixed shaft 41 substantially perpendicular to the rotating plate 2, a sample (not shown) is fixed to the fixed shaft 41, and the rotating plate 2 can rotate relative to the fixed frame 1 to change a relative angle between the fixed shaft 41 and the fixed frame 1.
In the embodiment, the sample is installed through the fixed shaft 41, so that the sample can be conveniently and quickly replaced and repeated experiments can be carried out, after the sample is installed again, the pitch angle of the rotating plate 2 can be adjusted to enable the fixed shaft 41 to be parallel to the plane of the ray source, the pose of the sample can be adjusted, and the rotating unit 4 is used for controlling the sample to rotate by taking the fixed shaft 41 as a rotating shaft during working, so that high-precision three-dimensional imaging of the sample can be realized.
With reference to fig. 1 and 3, the fixed frame 1 includes two pairs of parallel mounting plates 11 and connecting plates 12, the surfaces of the mounting plates 11 and the connecting plates 12 are perpendicular, the mounting plates 11 and the connecting plates 12 are rectangular, and two ends of the rotating plate 2 are limited between the opposite surfaces of the connecting plates 12 on two sides; a handle 14 may also be provided on the connecting plate 12 as desired to facilitate handling of the fixture. Referring to fig. 2, two ends of the rotating plate 2 are coaxially provided with a rotating pin 21, and the rotating pin 21 is in hinged fit with the connecting plate 12, so that the rotating plate 2 can rotate around the rotating pin 21 as an axis, and the angle of the fixed shaft 41 can be adjusted.
Referring to fig. 2, a telescopic unit 5 is fixedly arranged on the mounting plate 11 close to the rotating plate 2, and a telescopic end of the telescopic unit 5 is matched with the surface of the rotating plate 2 to drive the rotating plate 2 to rotate so as to change the angle of the fixed shaft 41. Specifically, on the mounting plate 11 provided with the telescopic unit 5, a return spring 53 connected with the rotating plate 2 is further fixed, so as to assist the swinging and resetting of the rotating plate 2, the rotating plate 2 in the embodiment only needs to rotate within a small range, and within the rotating range of the rotating plate 2, the return spring 53 is in an open state, so as to provide pulling force for the rotating plate 2. The telescopic unit 5 adopts a differential thread pair, so that the moving distance can be adjusted with high precision, and the position of the fixed shaft 41 after adjustment is ensured to meet the requirement; the end of the differential screw pair abuts on the surface of the rotating plate 2, and the position of the rotating plate 2 is controlled by the combined action of the differential screw pair and the return spring 53.
Specifically, in this embodiment, a pull rod 54 is respectively disposed on the mounting plate 2 and the rotating plate 11, the pull rod 54 has a limiting hole (not shown), the two ends of the return spring 53 respectively have hooks 55 passing through the limiting hole, the pull rods 54 on the two sides are pulled by the hooks, and when the rotating plate 2 swings, the return spring 53 always provides a pulling force to ensure that the rotating plate 2 is always pressed by the telescopic unit 5.
Referring to fig. 2 again, two ends of the rotating plate 2 are respectively provided with a swinging pin 22, and with reference to fig. 2, 4 and 5, the connecting plates 12 on both sides are respectively provided with an adjusting groove 13 engaged with the swinging pin 22, and the adjustment groove 13 is engaged with the swinging pin 22 to limit the rotating range of the rotating plate 2, in this embodiment, the rotating range of the rotating plate 2 is a forward and backward swinging range [0 °, 5 ° ] in a position parallel to the fixed frame 1.
The telescopic unit 5 can also select an air cylinder, the air cylinder is in hinged fit with a vertical plate 51, the vertical plate 51 is fixedly connected with the mounting plate 11, the output end of the air cylinder is in hinged fit with the rotating plate 2, the vertical plate 51 is approximately vertical to the mounting plate 11, so that when the rotating plate 2 rotates to change the angle, the telescopic unit 5 can adapt to the angle, and the rotating position of the rotating plate 2 can be controlled without the reset spring 53.
A basically vertical waist-shaped groove can be further formed in the rotating plate 2, the telescopic end of the telescopic unit 5 is limited in the waist-shaped groove, the position of the telescopic end in the waist-shaped groove can be changed by changing the length of the telescopic unit 5, and therefore the rotating plate 2 is driven to rotate through the fixed telescopic unit 5, and the reset spring 53 is not needed in the mode.
Referring to fig. 2 and 6, the driving end and the output end of the rotating unit 4 are respectively located at two sides of the rotating plate 2, the driving end of the rotating unit 4 is fixedly connected with the rotating plate 2, the output end of the rotating unit 4 is fixedly connected with a drill chuck 42, the drill chuck fixing shaft 41 is inserted into the drill chuck 42, the fixing shaft 41 is installed and fixed by screwing the drill chuck 42, the fixing shafts 41 with different specifications can be conveniently selected according to samples, the use is convenient, referring to fig. 1 again, the rotating unit 4 and the telescopic unit 5 are fixed at the same side of the rotating plate 2, and in the embodiment, the rotating unit 4 and the telescopic unit 5 are covered by fixedly connecting plates 12 at two sides through a cover plate 3.
The fixing device that this embodiment provided installs on CT imaging device through mounting panel 11, still is provided with photoelectric sensor 82 on CT imaging device, still be fixed with on fixed frame 1 and shelter from piece 81, back on fixed frame 1 installation CT imaging device, the light that blocks piece 81 can shelter from photoelectric sensor 82 to make things convenient for the system to confirm whether fixing device installs through photoelectric sensor 82's switching value signal.
The fixed frame 1 is also provided with a communication and/or power connector which is in plug-in fit with the connector through a spiral cable 9 to supply power, communicate and execute control commands.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A sample fixing device of cone beam CT imaging equipment is characterized in that: including fixed frame with set up the rotor plate on fixed frame, the rotor plate both ends and the articulated cooperation of fixed frame install the rotation unit on the rotor plate, the output fixedly connected with of rotation unit and rotor plate vertical fixed axle basically, the sample is fixed in on the fixed axle, the rotor plate can rotate the relative angle who changes fixed axle and fixed frame relative to the fixed frame.
2. The sample fixing device of the cone beam CT imaging device as claimed in claim 1, wherein: the fixed frame comprises two pairs of mounting plates and connecting plates which are parallel to each other, the mounting plates are perpendicular to the surfaces of the connecting plates, the mounting plates and the connecting plates enclose a rectangular structure, and two ends of the rotating plate are limited between the surfaces of the connecting plates on two sides.
3. The sample fixing device of the cone beam CT imaging device as claimed in claim 2, wherein: and two ends of the rotating plate are respectively and coaxially provided with a rotating pin, and the rotating pins are in hinged fit with the connecting plate.
4. The sample fixing device of the cone beam CT imaging device as claimed in claim 3, wherein: the mounting plate close to the rotating plate is connected with a telescopic unit, and the telescopic end of the telescopic unit is matched with one side, far away from the rotating pin, of the surface of the rotating plate.
5. The sample fixing device of the cone beam CT imaging device as claimed in claim 4, wherein: be provided with still fixedly connected with and rotor plate complex reset spring on the mounting panel of flexible unit, in the rotation range of rotor plate, reset spring is in the state of opening.
6. The sample fixing device of the cone beam CT imaging device as claimed in claim 5, wherein: the telescopic unit is a differential screw pair, and the end part of the differential screw pair is abutted against the rotating plate.
7. The sample fixing device of the cone beam CT imaging device as claimed in claim 6, wherein: the mounting plate and the rotating plate are respectively provided with a pull rod, the pull rod is provided with a limiting hole, and two ends of the reset spring are respectively provided with a hook which penetrates through the limiting hole.
8. The sample fixing device of the cone beam CT imaging device as claimed in claim 2, wherein: two ends of the rotating plate are respectively provided with a swinging pin, and the connecting plates at two sides are respectively provided with an adjusting groove matched with the swinging pin.
9. The sample fixing device of the cone beam CT imaging device as claimed in claim 1, wherein: the driving end and the output end of the rotating unit are respectively positioned at two sides of the rotating plate, the driving end of the rotating unit is fixedly connected with the rotating plate, the output end of the rotating unit is fixedly connected with a drill chuck, and the fixed shaft is fixed in the drill chuck.
10. The sample fixing device of the cone beam CT imaging device as claimed in claim 1, wherein: be provided with photoelectric sensor on the CT imaging equipment, be provided with on the fixed frame and hide the dog, when fixed frame installs on CT imaging equipment, hide and to block photoelectric sensor soon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110743179.XA CN113281360B (en) | 2021-06-30 | 2021-06-30 | Sample fixing device of cone beam CT imaging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110743179.XA CN113281360B (en) | 2021-06-30 | 2021-06-30 | Sample fixing device of cone beam CT imaging equipment |
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| Publication Number | Publication Date |
|---|---|
| CN113281360A true CN113281360A (en) | 2021-08-20 |
| CN113281360B CN113281360B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110743179.XA Active CN113281360B (en) | 2021-06-30 | 2021-06-30 | Sample fixing device of cone beam CT imaging equipment |
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| CN103784160A (en) * | 2014-03-06 | 2014-05-14 | 北京锐视康科技发展有限公司 | Correction device and correction method for geometric position of cone beam CT system |
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| CN105403579A (en) * | 2015-12-16 | 2016-03-16 | 天津三英精密仪器有限公司 | CT detection suitable for long sample |
| CN105445292A (en) * | 2014-08-13 | 2016-03-30 | 中国科学院高能物理研究所 | Industrial CL system scanning device for scanning thin plate structure |
| CN110749611A (en) * | 2019-11-21 | 2020-02-04 | 南京安科医疗科技有限公司 | Automatic adjusting support for CT equipment calibration and control system and method thereof |
| CN111257231A (en) * | 2020-02-28 | 2020-06-09 | 浙江大学 | Automatic leveling method for large-caliber planar optical element |
| CN111665269A (en) * | 2020-06-05 | 2020-09-15 | 东莞材料基因高等理工研究院 | Parallel X-ray CT imaging device |
| CN112816412A (en) * | 2021-01-04 | 2021-05-18 | 北京环境特性研究所 | Full-angle scannable BRDF/BTDF detection system and method |
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2021
- 2021-06-30 CN CN202110743179.XA patent/CN113281360B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040017882A1 (en) * | 2002-03-06 | 2004-01-29 | National Institute Of Advanced Industrial Science And Technology | Oblique view cone beam CT system |
| CN102973286A (en) * | 2012-10-30 | 2013-03-20 | 南方医科大学 | X-ray imaging device and imaging method thereof |
| CN103784160A (en) * | 2014-03-06 | 2014-05-14 | 北京锐视康科技发展有限公司 | Correction device and correction method for geometric position of cone beam CT system |
| CN105445292A (en) * | 2014-08-13 | 2016-03-30 | 中国科学院高能物理研究所 | Industrial CL system scanning device for scanning thin plate structure |
| CN104597062A (en) * | 2015-02-02 | 2015-05-06 | 天津三英精密仪器有限公司 | Cylindrical beam large visual field X-ray computed tomography (CT) imaging system |
| CN105403579A (en) * | 2015-12-16 | 2016-03-16 | 天津三英精密仪器有限公司 | CT detection suitable for long sample |
| CN110749611A (en) * | 2019-11-21 | 2020-02-04 | 南京安科医疗科技有限公司 | Automatic adjusting support for CT equipment calibration and control system and method thereof |
| CN111257231A (en) * | 2020-02-28 | 2020-06-09 | 浙江大学 | Automatic leveling method for large-caliber planar optical element |
| CN111665269A (en) * | 2020-06-05 | 2020-09-15 | 东莞材料基因高等理工研究院 | Parallel X-ray CT imaging device |
| CN112816412A (en) * | 2021-01-04 | 2021-05-18 | 北京环境特性研究所 | Full-angle scannable BRDF/BTDF detection system and method |
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| CN113281360B (en) | 2023-02-28 |
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