X-ray diffraction sample holder for crystal form structure analysis of ophthalmic implant

Abstract

The invention discloses an X-ray diffraction sample holder for crystal form structure analysis of an ophthalmic implant, and belongs to the technical field of X-ray diffraction analysis sample holders, the X-ray diffraction sample holder comprises an X-ray diffractometer, the inner part of the X-ray diffractometer is rotatably connected with a sample holder; the rotating unit is rotationally connected inside the X-ray diffractometer and is connected with the center of the sample holder; a lifting frame is connected into the X-ray diffractometer in a sliding mode, the lifting frame is of a T-shaped structure, and a grinding unit, a trowelling unit and a cleaning unit are installed at the three ends of the lifting frame respectively. When sample powder in a placement groove rotates to a next station, a through hole is completely communicated with the bottom of the placement groove under the magnetic action of an electromagnet and a magnetic part, and at the moment, the ophthalmic implant sample powder in the placement groove is pushed into a sample groove in a sample seat under the action of a conical feeding frame; and the whole-process automation of the sample from grinding, positioning to feeding is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of X-ray diffraction sample holder, in particular to an X-ray diffraction sample holder for ophthalmic implant crystal structure analysis. BACKGROUND

[0002] X-ray diffractometer is a scientific instrument that uses X-ray diffraction phenomenon produced by interaction between X-ray and crystal material to analyze the microstructure of the material. When a beam of X-ray irradiates on the sample, the regularly arranged atoms in the crystal will cause the X-ray to diffract, and the direction and intensity of the diffracted line are recorded by the detector, so that the atomic arrangement, lattice parameters, phase composition and stress state of the crystal can be deduced. It is an indispensable analysis tool in the fields of material science, chemistry, physics and geology, and is widely used in crystal structure analysis, phase identification, residual stress measurement and other researches.

[0003] In view of the challenges of small sample size, irregular shape and precise positioning of ophthalmic implants (such as slow-release drug particles, artificial lenses, etc.), the X-ray diffraction sample holder dedicated to ophthalmic implants is usually equipped with a low-background noise groove or capillary tube, which can effectively fix the trace amount of sample and prevent scattering; at the same time, it integrates a high-precision three-dimensional adjustable platform and a microscopic aiming system to ensure that the X-ray beam can accurately irradiate the specific small area of the implant, so as to obtain high signal-to-noise ratio diffraction pattern non-destructively and efficiently.

[0004] In the prior art, the sample preparation process of the X-ray diffraction sample holder dedicated to ophthalmic implants completely relies on manual filling of powder into the placement groove. This manual operation method has significant limitations: on the one hand, it is difficult to ensure the flatness of the powder surface after each filling, which affects the consistency of the experimental conditions; on the other hand, the operation process is easy to introduce contaminants and interfere with the detection results. Therefore, it is urgent to develop a new X-ray diffraction sample holder dedicated to ophthalmic implant crystal structure analysis to solve the above problems. SUMMARY

[0005] In view of the deficiencies in the prior art, the purpose of the embodiments of the present application is to provide an X-ray diffraction sample holder for ophthalmic implant crystal structure analysis to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: An X-ray diffraction sample holder for ophthalmic implant crystal structure analysis, comprising: An X-ray diffractometer, a sample holder is rotatably connected inside the X-ray diffractometer, the sample holder is in a cross structure, four groups of end portions of the sample holder are provided with placement grooves, a sample seat is slidably connected to the lower side of the sample holder, a sample groove is formed in the sample seat, and the sample groove and the placement groove are communicated; A rotating unit is rotatably connected to the inside of the X-ray diffractometer and the center of the sample holder, and is used to drive the sample holder to rotate; The X-ray diffractometer is internally slidably connected with a lifting frame, and the lifting frame has a T-shaped structure, three ends of the lifting frame are respectively provided with a grinding unit, a leveling unit and a cleaning unit; when the lifting frame is lowered, the grinding unit, the leveling unit and the cleaning unit can respectively grind, feed and clean the ophthalmic implant samples in the three groups of sample grooves on the sample holder.

[0007] As a preferred technical scheme of the present application, the rotating unit comprises: a support fixed to the inner wall of the X-ray diffractometer, and a driving member mounted on the surface of the support; a driving shaft rotatably connected to the inside of the support, one end of the driving shaft connected to the output end of the driving member, and the other end connected to the center of the sample holder.

[0008] As a preferred technical scheme of the present application, the X-ray diffractometer is internally provided with a pneumatic cylinder, the lifting frame is connected to the output end of the pneumatic cylinder; the X-ray diffractometer is provided with an observation window on the side surface, the X-ray diffractometer is slidably connected with two sliding doors on the surface, and the X-ray diffractometer is provided with a control switch on the lower side.

[0009] As a preferred technical scheme of the present application, the grinding unit comprises: a grinding motor mounted on one end of the lifting frame; an inclined frame fixed to the output end of the grinding motor, and the other end of the inclined frame is fixed with a grinding rod.

[0010] As a preferred technical scheme of the present application, the leveling unit comprises: an extension frame connected to the other end of the lifting frame, and a conical feeding frame fixed to the end of the lifting frame; a rotating shaft rotatably connected to the extension frame through a torsion spring, a rotating frame fixed to the surface of the rotating shaft, and an inclined surface formed on the side surface of the rotating frame; a limiting frame fixed to the side surface of the extension frame and engaged with the side surface of the rotating frame; an extension seat connected to the end of the sample holder, and a sliding rod slidably connected in the extension seat, one end of the sliding rod is fixed with a leveling seat; a U-shaped frame fixed to the other end of the sliding rod, and the U-shaped frame and the extension seat are connected through an elastic member; and a rotating rod rotatably connected to the upper end of the U-shaped frame and intermittently slidably connected with the inclined surface.

[0011] As a preferred technical scheme of the present application, the inside of the extension seat is slidably connected with an avoiding unit, the avoiding unit is used to seal and open the bottom of the placing groove, and the avoiding unit comprises: an avoiding groove formed in the inside of the sample holder, and a sample seat placed in the lower part of the avoiding groove; a sliding frame slidably connected to the upper part of the avoiding groove and connected with the avoiding groove through an elastic member, and the upper and lower surfaces of the leveling seat are slidably connected to the lower side of the sliding frame and the upper side of the sample seat, respectively; a through hole formed in the sliding frame and intermittently communicated with the avoiding groove; a magnetic member fixed to the end of the sliding frame away from the elastic member; and an electromagnet mounted on the inner wall of the X-ray diffractometer and intermittently connected with the magnetic member.

[0012] As a preferred technical scheme of the present application, the cleaning unit comprises: a fixed frame connected to the inner wall of the X-ray diffractometer, and a cleaning cylinder mounted at the end; a rotating rod slidingly connected inside the cleaning cylinder, the surface of the rotating rod being provided with an arc-shaped groove, and the upper end of the rotating rod being connected to the other end of the lifting frame; a cleaning roller fixed to the lower side end of the rotating rod; and a vertical frame connected to the upper side of the fixed frame, and a sliding column fixed to the vertical frame and slidingly connected to the inside of the arc-shaped groove.

[0013] As a preferred technical scheme of the present application, the cleaning roller is provided with a dust suction unit for adsorbing the dust in the placement groove, the dust suction unit comprising: a piston piece fixed to the surface of the rotating rod and slidingly connected to the inner wall of the cleaning cylinder; a compression spring connected between the side surface of the piston piece and the inner wall of the cleaning cylinder; an air duct provided inside the rotating rod and the cleaning roller; a first one-way valve provided on the rotating rod and in communication with the end of the air duct; and an air pipe mounted on the cleaning cylinder through a second one-way valve.

[0014] Compared with the prior art, the embodiment of the present application has the following advantages: when the sample holder drives the sample inside the placement groove to rotate 90 degrees and is located below the grinding rod, the ophthalmic implant sample is ground under the action of the grinding rod. When the ground sample powder in the placement groove is rotated to the next station, the through hole is completely communicated with the bottom of the placement groove under the magnetic action of the electromagnet and the magnetic piece, and at this time, the ophthalmic implant sample powder in the placement groove is pushed into the sample groove in the sample seat under the action of the conical feeding frame, realizing the full automation of the sample from grinding, positioning to feeding without manual intervention, solving the technical pain points of difficult feeding, low efficiency and easy pollution of trace and precious ophthalmic implant samples in crystal structure analysis, and providing a strong guarantee for obtaining accurate and reliable crystal structure data.

[0015] In the present application, the leveling seat can level the ophthalmic implant sample powder in the sample groove on the sample seat, facilitating the next step of crystal structure analysis by the X-ray diffractometer. The bottom profile of the leveling seat precisely matches the opening shape of the sample groove on the sample seat, ensuring that the excess powder can be scraped off without leaving grooves on the sample surface or causing the powder to be layered. By automatically leveling the sample powder in the sample groove through the leveling seat, manual errors caused by different people are eliminated, ensuring the consistency of the flatness of the powder surface each time the sample is prepared, and effectively avoiding the pollution or influence on the sample that may be introduced by manual operation.

[0016] The rotating rod drives the cleaning roller to automatically descend and rotate, and the flexible cleaning material attached to the surface of the cleaning roller can effectively remove residual powder, while avoiding abrasion to the sample tank. Meanwhile, when the airflow passes through the air duct, the sample dust in the placement tank is brought into the cleaning cylinder, improving the cleaning effect of the residual sample in the placement tank. Through mechanical cleaning by the cleaning roller and pneumatic adsorption, the residual sample in the placement tank can be completely removed, reducing the risk of cross contamination and ensuring the cleanliness of the sample tank during each test, thereby providing reliable protection for efficient and continuous sample testing.

[0017] In order to more clearly illustrate the structural features and effects of the present application, the present application will be described in detail below in conjunction with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of an X-ray diffraction sample holder for ophthalmic implant crystal structure analysis is provided for the embodiments of the present application.

[0019] Figure 2 A schematic diagram of the internal structure of an X-ray diffraction sample holder for ophthalmic implant crystal structure analysis is provided for the embodiments of the present application.

[0020] Figure 3 A schematic diagram of the structure of a sample holder of an X-ray diffraction sample holder for ophthalmic implant crystal structure analysis is provided for the embodiments of the present application.

[0021] Figure 4 A schematic diagram of the structure of a grinding unit of an X-ray diffraction sample holder for ophthalmic implant crystal structure analysis is provided for the embodiments of the present application.

[0022] Figure 5 A schematic diagram of the structure of a rotating frame of an X-ray diffraction sample holder for ophthalmic implant crystal structure analysis is provided for the embodiments of the present application.

[0023] Figure 6 A schematic diagram of the structure of a smearing unit of an X-ray diffraction sample holder for ophthalmic implant crystal structure analysis is provided for the embodiments of the present application.

[0024] Figure 7 A schematic diagram of the structure of a smearing seat of an X-ray diffraction sample holder for ophthalmic implant crystal structure analysis is provided for the embodiments of the present application.

[0025] Figure 8 A sectional view of a cleaning unit of an X-ray diffraction sample holder for ophthalmic implant crystal structure analysis is provided for the embodiments of the present application.

[0026] Label: 1, X-ray diffractometer; 11, observation window; 12, sliding door; 13, control switch; 14, sample holder; 141, placing groove; 15, sample seat; 16, lifting frame; 161, air cylinder; 2, rotating unit; 21, support; 22, driving piece; 23, driving shaft; 3, grinding unit; 31, grinding motor; 32, inclined frame; 33, grinding rod; 4, leveling unit; 41, extension frame; 42, rotating shaft; 43, rotating frame; 431, inclined surface; 44, limiting frame; 45, conical feeding frame; 46, extension seat; 47, sliding rod; 471, leveling seat; 48, U-shaped frame; 481, rotating rod; 49, elastic piece; 5, avoiding unit; 51, avoiding groove; 52, sliding frame; 521, through hole; 53, elastic object; 54, magnetic piece; 55, electromagnet; 6, cleaning unit; 61, fixing frame; 62, cleaning cylinder; 63, rotating rod; 631, arc-shaped groove; 64, cleaning roller; 65, vertical frame; 66, sliding column; 7, dust suction unit; 71, piston piece; 72, compression spring; 73, first one-way valve; 74, air duct; 75, second one-way valve; 76, air pipe. DETAILED DESCRIPTION

[0027] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0028] The specific implementation of the present application is described in detail below in combination with specific embodiments.

[0029] Reference Figures 1-8 An X-ray diffractometer sample holder for ophthalmic implant crystal structure analysis comprises: The X-ray diffractometer 1 is internally rotatably connected with the sample holder 14, the sample holder 14 has a cross structure, four groups of end portions of the sample holder 14 are provided with placing grooves 141, and the lower side of the sample holder 14 is slidably connected with the sample seat 15, the sample seat 15 is provided with a sample groove, and the sample groove and the placing grooves 141 are communicated; The rotating unit 2 is rotatably connected in the interior of the X-ray diffractometer 1 and connected with the center of the sample holder 14, and is used to drive the sample holder 14 to rotate; The lifting frame 16 is slidably connected in the interior of the X-ray diffractometer 1, has a T-shaped structure, and three ends thereof are respectively provided with the grinding unit 3, the leveling unit 4 and the cleaning unit 6; when the lifting frame 16 is lowered, the grinding unit 3, the leveling unit 4 and the cleaning unit 6 can respectively grind, feed and clean the ophthalmic implant samples in the three groups of sample grooves on the sample holder 14.

[0030] In an embodiment of the present application, as Figure 2 andFigure 3 As shown in the figure, the rotating unit 2 comprises: A support 21 is fixed on the inner wall of the X-ray diffractometer 1, and a driving part 22 is mounted on the surface of the support 21, which is specifically a servo motor; A driving shaft 23 is rotationally connected to the inside of the support 21, and one end is connected to the output end of the driving part 22, and the other end is connected to the center of the sample holder 14.

[0031] In this embodiment, an observation window 11 is mounted on the side of the X-ray diffractometer 1, two sets of sliding doors 12 are slidingly connected to the surface of the X-ray diffractometer 1, and a control switch 13 is mounted on the lower side of the X-ray diffractometer 1. The sample holder 14 is in a cross structure, and four sets of end portions of the sample holder 14 are provided with placing grooves 141.

[0032] When the X-ray diffractometer 1 is used to analyze the crystal structure of ophthalmic implants, first open the two sets of sliding doors 12. Turn on the driving part 22 through the control switch 13, and the output end of the driving part 22 drives the sample holder 14 to rotate through the driving shaft 23, so that the sample holder 14 drives the four sets of placing grooves 141 at the end portions to rotate. When the placing grooves 141 are rotated to the position of the sliding door 12, a small amount of ophthalmic implants are placed in the inside of the placing grooves 141, and the cleaned sample seat 15 is placed in the avoiding groove 51. Then turn on the driving part 22 again, so that the sample holder 14 drives the ophthalmic implants in the inside of the set of placing grooves 141 to rotate to the grinding station for grinding treatment.

[0033] In one embodiment of the present application, as shown in Figure 3 and Figure 4 The grinding unit 3 comprises: A grinding motor 31 is mounted on the upper side of one end of the lifting frame 16; An inclined frame 32 is fixed at the output end of the grinding motor 31, and the other end is fixed with a grinding rod 33.

[0034] In this embodiment, a pneumatic cylinder 161 is mounted on the inside of the top of the X-ray diffractometer 1, and the lifting frame 16 is connected to the output end of the pneumatic cylinder 161.

[0035] When the sample holder 14 drives the ophthalmic implants in the inside of the placing grooves 141 to rotate 90 degrees and locate below the grinding rod 33, turn on the pneumatic cylinder 161 through the control switch 13, so that the output end of the pneumatic cylinder 161 drives the lifting frame 16 to descend, so that the lifting frame 16 drives the inclined frame 32 and the grinding rod 33 as a whole to descend. Turn on the grinding motor 31, and the output end of the grinding motor 31 drives the grinding rod 33 to rotate through the inclined frame 32 until the grinding rod 33 contacts the ophthalmic implants in the placing grooves 141, so that the ophthalmic implants are ground under the action of the grinding rod 33.

[0036] In one embodiment of the present application, as shown in Figure 7 The inside of the extension seat 46 is slidingly connected with an avoiding unit 5 for sealing and opening the bottom of the placing groove 141. The avoiding unit 5 comprises: An avoiding groove 51 is formed in the inside of the sample holder 14, and the lower part of the avoiding groove 51 is provided with the sample seat 15; A sliding holder 52 is slidingly connected to the upper part of the avoiding groove 51, and the sliding holder 52 is connected to the avoiding groove 51 through an elastic member 53. The upper and lower surfaces of the wiping seat 471 are slidingly connected to the lower side of the sliding holder 52 and the upper side of the sample seat 15, respectively; A through hole 521 is formed in the sliding holder 52 and intermittently communicates with the avoiding groove 51; A magnetic member 54 is fixed to the end of the sliding holder 52 away from the elastic member 53; An electromagnet 55 is installed on the inner wall of the X-ray diffractometer 1 and intermittently connected to the magnetic member 54.

[0037] In this embodiment, when the ophthalmic implant in the placing groove 141 is ground, the cylinder 161 is opened to make the lifting frame 16 as a whole rise. The driving member 22 is opened again to make the sample holder 14 drive the four sets of placing grooves 141 to rotate by 90 degrees again. At this time, the ophthalmic implant in the placing groove 141 is rotated to the next station.

[0038] When the sample holder 14 rotates, the magnetic member 54 is synchronously rotated through the sliding holder 52. When the ophthalmic implant in the placing groove 141 is rotated to the next station, the sample holder 14 rotates the magnetic member 54 to the side surface of the electromagnet 55 through the sliding holder 52. Under the magnetic action of the electromagnet 55 and the magnetic member 54, the sliding holder 52 slides outward in the sample holder 14. When the sliding holder 52 slides, the elastic member 53 is stretched. The sliding holder 52 drives the through hole 521 to synchronously slide, so that the through hole 521 and the bottom of the placing groove 141 are completely communicated. Therefore, the ground ophthalmic implant can enter the sample groove in the sample seat 15 through the bottom of the placing groove 141 and the through hole 521, and the automatic feeding of the ophthalmic implant is completed.

[0039] In one embodiment of the present application, as shown in Figure 4 and Figure 5 The wiping unit 4 comprises: An extension holder 41 is connected to the other end of the lifting frame 16. The set of end of the lifting frame 16 is fixed with a conical feeding holder 45; A rotating shaft 42 is rotatably connected to the extension holder 41 through a torsion spring. The surface of the rotating shaft 42 is fixed with a rotating holder 43, and the side surface of the rotating holder 43 is provided with an inclined surface 431; A limiting holder 44 is fixed to the side surface of the extension holder 41 and is clampedly connected to the side surface of the rotating holder 43; The extension base 46 is connected to the end of the sample holder 14, and the slide rod 47 is slidably connected inside the extension base 46. One end of the slide rod 47 is fixed with a smearing base 471. The U-shaped frame 48 is fixed to the other end of the slide rod 47, and the U-shaped frame 48 and the extension base 46 are connected by the elastic member 49. The elastic member 53 and the elastic member 49 are specifically springs. The rotating rod 481 is rotatably connected to the upper end of the U-shaped frame 48 and is intermittently slidably connected with the inclined surface 431.

[0040] In the embodiment, when the through hole 521 and the bottom of the placement groove 141 are completely communicated, the air cylinder 161 is opened, so that the lifting frame 16 is lowered again as a whole, so that the lifting frame 16 drives the conical feeding frame 45 and the extension frame 41 to descend as a whole. When the conical feeding frame 45 descends to the inside of the placement groove 141, the ophthalmic implant sample powder in the placement groove 141 is pushed into the sample groove in the sample seat 15 under the action of the conical feeding frame 45 through the through hole 521, realizing the whole process automation from grinding, positioning to feeding of the sample without manual intervention, which is suitable for the crystal form screening or quality control process of ophthalmic implant samples that need to be analyzed, and significantly improves the detection efficiency.

[0041] In the above process, the extension frame 41 drives the rotating frame 43 to descend synchronously through the rotating shaft 42 when descending until the rotating frame 43 descends to contact the rotating rod 481. At this time, the rotating frame 43 is rotated upward on the extension frame 41 under the action of the rotating rod 481. The rotating frame 43 compresses the torsion spring when rotating until the side surface of the rotating frame 43 completely separates from the rotating rod 481. After that, the rotating frame 43 drives the rotating shaft 42 to reversely rotate on the extension frame 41 under the action of the torsion spring until the rotating frame 43 rotates to the horizontal direction again.

[0042] When the conical feeding frame 45 pushes the ophthalmic implant sample powder in the placement groove 141 to the inside of the sample seat 15, the air cylinder 161 is opened, so that the lifting frame 16 as a whole rises. When the extension frame 41 drives the rotating frame 43 to rise to contact the rotating rod 481, the inclined surface 431 of the rotating frame 43 will first contact the rotating rod 481, so that under the action of the rotating rod 481 and the inclined surface 431, the L-shaped frame 48 will push the sliding rod 47 to slide inward in the extension seat 46, and the L-shaped frame 48 will compress the elastic member 49 when sliding, and the sliding rod 47 will drive the leveling seat 471 at the end thereof to slide synchronously when sliding, so that the leveling seat 471 can level the ophthalmic implant sample powder in the sample groove on the sample seat 15, facilitating the next crystal structure analysis of the X-ray diffractometer 1. The bottom profile of the leveling seat 471 is precisely matched with the opening shape of the sample groove on the sample seat 15, ensuring that the excess powder can be scraped off, and grooves or layered powder on the sample surface can be avoided. The sample powder in the sample groove is leveled by the leveling seat 471, which eliminates the manual error caused by different people, ensures the consistency of the flatness of the sample powder surface each time, and effectively avoids the pollution or influence on the sample caused by manual operation.

[0043] When the sample powder is loaded into the sample groove, the driving member 22 is opened, so that the sample frame 14 rotates again. When the sample frame 14 rotates the magnetic member 54 to be separated from the electromagnet 55 through the sliding frame 52, the magnetic force disappears. At this time, the sliding frame 52 will reset to the initial position in the avoiding groove 51 under the elastic force of the elastic member 53, so that the through hole 521 on the sliding frame 52 is staggered with the bottom of the placement groove 141, and the channel is closed, ready to receive the next sample, solving the technical pain points of difficult feeding, low efficiency and easy pollution of trace and precious ophthalmic implant samples in crystal structure analysis, and providing a strong guarantee for obtaining accurate and reliable crystal structure data.

[0044] In an embodiment of the present application, as shown in Figure 8 The cleaning unit 6 comprises: The fixed frame 61 is connected to the inner wall of the X-ray diffractometer 1, and the end portion is provided with the cleaning cylinder 62; The rotating rod 63 is slidingly connected to the inside of the cleaning cylinder 62, and the surface of the rotating rod 63 is provided with an arc-shaped groove 631. The upper end portion of the rotating rod 63 is connected to the other end portion of the lifting frame 16; The cleaning roller 64 is fixed to the lower side end portion of the rotating rod 63; The vertical frame 65 is connected to the upper side of the fixed frame 61, and the sliding column 66 is fixed to the vertical frame 65. The end portion of the sliding column 66 is slidingly connected to the inside of the arc-shaped groove 631.

[0045] In the embodiment, when the sample powder is loaded into the sample groove, the sample holder 14 is rotated by 90 degrees again, and then the air cylinder 161 is started again to lower the lifting frame 16. When the lifting frame 16 is lowered, the rotating rod 63 is lowered in the cleaning cylinder 62, and the arc-shaped groove 631 on the surface of the rotating rod 63 is lowered synchronously. Since the sliding column 66 is slidably connected to the arc-shaped groove 631, the rotating rod 63 rotates in the cleaning cylinder 62 when the rotating rod 63 is lowered in the cleaning cylinder 62, and the cleaning roller 64 at the end of the rotating rod 63 is lowered and rotated. When the cleaning roller 64 is lowered to the placement groove 141, the flexible cleaning material attached to the surface of the cleaning roller 64 can effectively remove the residual powder and avoid damaging the sample groove. After cleaning, the lifting frame 16 lifts the cleaning roller 64 to reset, and the rotating rod 63 is reversely rotated by the cooperation of the arc-shaped groove 631 and the sliding column 66 during the lifting process, so that the cleaning roller 64 is lifted synchronously and rotated to the initial angle, thereby preparing for the next cleaning cycle. The automatic cleaning mechanism reduces the risk of cross contamination and ensures the cleanliness of the sample groove during each test, thereby maintaining high-standard test conditions and data accuracy in efficient and continuous testing.

[0046] In one embodiment of the present application, as shown in Figure 8 The cleaning roller 64 is provided with a dust suction unit 7, which is used to adsorb the dust in the placement groove 141. The dust suction unit 7 comprises: A piston 71 is fixed to the surface of the rotating rod 63 and slidably connected to the inner wall of the cleaning cylinder 62. A compression spring 72 is connected between the side surface of the piston 71 and the inner wall of the cleaning cylinder 62. An air duct 74 is provided in the rotating rod 63 and the cleaning roller 64. A first one-way valve 73 is provided in the rotating rod 63, and the first one-way valve 73 is in communication with the end of the air duct 74. An air pipe 76 is installed on the cleaning cylinder 62 through a second one-way valve 75.

[0047] In the embodiment, when the rotating rod 63 is lowered, the piston 71 is lowered in the cleaning cylinder 62, the piston 71 compresses the compression spring 72, and the space formed by the piston 71 and the cleaning cylinder 62 is gradually reduced, and the gas in the space is discharged from the air pipe 76 through the second one-way valve 75.

[0048] When the rotating rod 63 rises, the piston piece 71 will rise synchronously inside the cleaning cylinder 62, at this time, the piston piece 71 and the space formed inside the cleaning cylinder 62 will gradually increase, so that the external gas can enter the above-mentioned space through the air channel 74 and the first one-way valve 73, and the sample dust in the placement groove 141 will be brought into the inside of the cleaning cylinder 62 when the gas flow passes through the air channel 74, thereby improving the cleaning effect of the residual sample in the placement groove 141. Through mechanical cleaning and pneumatic adsorption of the cleaning roller 64, the sample residue in the placement groove 141 can be completely removed, thereby reducing the risk of cross contamination and ensuring the cleanliness of the sample groove during each test, thereby providing reliable guarantee for efficient and continuous sample testing.

[0049] The working principle of the present application is that when the X-ray diffractometer 1 is used to analyze the crystal structure of the ophthalmic implant, first, open the two groups of sliding doors 12. A small amount of ophthalmic implant is placed inside the placement groove 141, and the cleaned sample seat 15 is placed inside the avoidance groove 51.

[0050] When the sample holder 14 drives the ophthalmic implant sample in the placement groove 141 to rotate 90 degrees and be located below the grinding rod 33, the output end of the grinding motor 31 drives the grinding rod 33 to rotate through the inclined frame 32, and the grinding rod 33 contacts the ophthalmic implant in the placement groove 141, so that the ophthalmic implant sample is ground under the action of the grinding rod 33.

[0051] When the ophthalmic implant in the placement groove 141 rotates to the next station, the sample holder 14 drives the magnetic piece 54 to rotate to the side surface of the electromagnet 55 through the sliding frame 52, and the sliding frame 52 slides outward in the sample holder 14 under the magnetic action of the electromagnet 55 and the magnetic piece 54. When the sliding frame 52 slides, the elastic piece 53 is stretched, and the sliding frame 52 drives the through hole 521 to slide synchronously, and when the through hole 521 and the bottom of the placement groove 141 are completely connected, the ophthalmic implant sample powder in the placement groove 141 is pushed into the sample groove in the sample seat 15 through the through hole 521 under the action of the conical feeding frame 45, realizing the whole process automation from grinding, positioning to feeding of the sample.

[0052] In the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection, it can be mechanical connection, or electrical connection or can communicate with each other, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication between two elements or the interaction between two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific situation.

[0053] The above merely describes preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An X-ray diffraction sample holder for analyzing the crystal structure of ophthalmic implants, characterized in that, include: X-ray diffractometer (1), the X-ray diffractometer (1) is internally rotatably connected to a sample holder (14), the sample holder (14) is in the shape of a cross, and each of the four ends of the sample holder (14) is provided with a placement groove (141). The sample holder (14) is slidably connected to a sample seat (15), and a sample groove is opened on the sample seat (15). The sample groove and the placement groove (141) are connected. The rotating unit (2) is rotatably connected inside the X-ray diffractometer (1) and centrally connected to the sample holder (14) to drive the sample holder (14) to rotate; The X-ray diffractometer (1) has a sliding connection to a lifting frame (16). The lifting frame (16) has a T-shaped structure, and a grinding unit (3), a smoothing unit (4), and a cleaning unit (6) are installed at its three ends respectively. When the lifting frame (16) descends, the grinding unit (3), the smoothing unit (4), and the cleaning unit (6) can grind, feed, and clean the ophthalmic implant samples in the three sets of sample slots on the sample holder (14) respectively.

2. The X-ray diffraction sample holder for crystal structure analysis of ophthalmic implants according to claim 1, characterized in that, The rotating unit (2) includes: A bracket (21) is fixed to the inner wall of the X-ray diffractometer (1), and a drive component (22) is mounted on its surface; The drive shaft (23) is rotatably connected inside the bracket (21), with one end connected to the output end of the drive unit (22) and the other end connected to the center of the sample holder (14).

3. The X-ray diffraction sample holder for crystal structure analysis of ophthalmic implants according to claim 1, characterized in that, A cylinder (161) is installed on the inner top of the X-ray diffractometer (1), and a lifting frame (16) is connected to the output end of the cylinder (161); an observation window (11) is installed on the side of the X-ray diffractometer (1), two sets of sliding doors (12) are slidably connected to the surface of the X-ray diffractometer (1), and a control switch (13) is installed on the lower side of the X-ray diffractometer (1).

4. The X-ray diffraction sample holder for crystal structure analysis of ophthalmic implants according to claim 2, characterized in that, The grinding unit (3) includes: The grinding motor (31) is installed on the upper side of one end of the lifting frame (16); The tilting frame (32) is fixed at one end to the output end of the grinding motor (31), and the other end is fixed with a grinding rod (33).

5. The X-ray diffraction sample holder for crystal structure analysis of ophthalmic implants according to claim 4, characterized in that, The smoothing unit (4) includes: An extension frame (41) is connected to the other end of the lifting frame (16), and a conical feeding frame (45) is fixed to the end of the lifting frame (16). The rotating shaft (42) is rotatably connected to the extension frame (41) by a torsion spring. The rotating frame (43) is fixed on the surface of the rotating shaft (42), and the side of the rotating frame (43) is provided with an inclined surface (431). The limiting bracket (44) is fixed to the side of the extension bracket (41) and engages with the side of the rotating bracket (43); An extension seat (46) is connected to the end of the sample holder (14), and a slide rod (47) is slidably connected inside. A smoothing seat (471) is fixed to one end of the slide rod (47). An inverted bracket (48) is fixed to the other end of the slide rod (47), and the inverted bracket (48) and the extension seat (46) are connected by an elastic element (49); The rotating rod (481) is rotatably connected to the upper end of the shaped frame (48) and intermittently slidably connected to the inclined surface (431).

6. The X-ray diffraction sample holder for crystal structure analysis of ophthalmic implants according to claim 5, characterized in that, An obstacle avoidance unit (5) is slidably connected inside the extension seat (46). The obstacle avoidance unit (5) is used to seal and open the bottom of the placement slot (141). The obstacle avoidance unit (5) includes: A clearance groove (51) is provided inside the sample holder (14), and a sample holder (15) is placed at the bottom; The sliding frame (52) is slidably connected to the upper part of the relief groove (51) and is connected to the relief groove (51) by an elastic element (53). The upper and lower surfaces of the smoothing seat (471) are slidably connected to the lower side of the sliding frame (52) and the upper side of the sample holder (15), respectively. A through hole (521) is provided on the sliding frame (52) and is intermittently connected to the clearance groove (51); A magnetic component (54) is fixed to the end of the sliding frame (52) away from the elastic element (53); An electromagnet (55) is installed on the inner wall of the X-ray diffractometer (1) and is intermittently connected to a magnetic component (54).

7. The X-ray diffraction sample holder for crystal structure analysis of ophthalmic implants according to claim 6, characterized in that, The cleaning unit (6) includes: A mounting bracket (61) is connected to the inner wall of the X-ray diffractometer (1), and a cleaning tube (62) is installed at the end; The rotating rod (63) is slidably connected inside the cleaning cylinder (62). The surface of the rotating rod (63) is provided with an arc groove (631). The upper end of the rotating rod (63) is connected to the other end of the lifting frame (16). A cleaning roller (64) is fixed to the lower end of a rotating rod (63); A vertical frame (65) is connected to the upper side of a fixed frame (61). A sliding column (66) is fixed on the vertical frame (65), and the end of the sliding column (66) is slidably connected inside an arc-shaped groove (631).

8. The X-ray diffraction sample holder for crystal structure analysis of ophthalmic implants according to claim 7, characterized in that, The cleaning roller (64) is provided with a dust suction unit (7), which is used to absorb dust in the placement groove (141). The dust suction unit (7) includes: Piston component (71) is fixed on the surface of rotating rod (63) and slidably connected to the inner wall of cleaning cylinder (62); A compression spring (72) is connected between the side of the piston (71) and the inner wall of the cleaning cylinder (62); Air passage (74) is formed inside the rotating rod (63) and the cleaning roller (64); A first check valve (73) is provided on the rotating rod (63), and the first check valve (73) is connected to the end of the air passage (74); The air tube (76) is installed on the cleaning tube (62) via a second one-way valve (75).

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