A multifunctional sample stage for a small-angle x-ray scattering instrument

Abstract

A multifunctional sample stage for a small-angle X-ray scattering (SAXS) spectrometer relates to the field of X-ray scattering experimental technology. The multifunctional sample stage includes a rotating device, a loading device, and a controller. The rotating device includes a base, a ring frame, a ring rack, gears, and a first driving device. The loading device is fixedly connected to the rack. The loading device includes a fixing frame, a sample tray, a rotating shaft, a second driving device, and a tensioning device for fixing the solid sample to be tested. The tensioning device includes a fixing device, a screw, and a third driving device. One end of the screw has a left-hand thread, and the other end has a right-hand thread. The left-hand and right-hand threads are respectively connected to two fixing devices located on different sample trays and corresponding to each other. This device can simultaneously control the sample rotation angle and tensile force variables, enabling in-situ research on the structural evolution and property relationships of materials during complex processing under stress changes, and can simultaneously hold multiple solid samples to be tested.

Description

Technical Field

[0001] This invention relates to the field of X-ray scattering experimental technology, and more specifically, to a multifunctional sample stage for a small-angle X-ray scatterer. Background Technology

[0002] Small-angle X-ray scattering (SAXS) is a physical technique for studying the geometric structure of matter at the nanoscale. It typically measures structural features in the 1-1000 nm range (colloidal range), making it particularly suitable for studying submicroscopic structures at the nanoscale. It can obtain much qualitative and quantitative structural information about colloidal dispersions, such as force and pore size distribution, colloidal particle aggregation, and interfacial structures. It has a wide range of applicable samples, suitable for both dry and wet samples, and requires no special sample preparation. However, traditional measurements can only control single variables such as rotation angle, temperature, and tensile force, and can only measure one sample at a time. Summary of the Invention

[0003] The purpose of this invention is to provide a multifunctional sample stage for a small-angle X-ray scattering instrument. This device can simultaneously control the sample rotation angle and tensile force variables, enabling in-situ research on the structural evolution and property relationships of materials during complex processing under stress variations. It can also simultaneously hold multiple solid samples for testing. This facilitates individual measurement of each sample, improving measurement efficiency and offering advantages such as multiple controllable variables.

[0004] The embodiments of the present invention are implemented as follows:

[0005] A multifunctional sample stage for a small-angle X-ray scattering instrument includes a rotating device, a loading device connected to the rotating device, and a controller connected to the rotating device and the loading device.

[0006] The rotating device includes a base, an annular frame connected to the base, and a rotating assembly disposed on the annular frame; the rotating assembly includes an annular rack disposed on the outside of the annular frame, a gear cooperating with the annular rack, and a first driving device for controlling the gear; the first driving device is connected to the controller, and the loading device is fixedly connected to the annular rack.

[0007] The loading device includes two symmetrically arranged fixing frames on the annular frame, two oppositely arranged sample trays with multiple sample slots in the annular shape, a rotating shaft passing through the sample trays and fixedly connected to the fixing frames at both ends, a second driving device for controlling the rotating shaft, and a stretching device for fixing the solid sample to be tested; the line connecting the two fixing frames is parallel to the diameter of the annular frame, and the inner side of the fixing frame is provided with an internal rack that cooperates with the annular rack; the sample trays are symmetrically arranged between the two fixing frames and perpendicular to the plane of the annular frame, and the sample slots on the two sample trays correspond one-to-one; the two ends of the stretching device are respectively disposed in the sample slots of the different sample trays, and the stretching device fixes one end of the solid sample to be tested, so that the solid sample to be tested is parallel to the line connecting the two fixing frames; the second driving device is connected to the controller.

[0008] The stretching device includes two fixing devices, two parallel screws, and a third driving device connected to the screws. One end of each screw is provided with a left thread and the other end is provided with a right thread. The left thread and the right thread are respectively connected to two fixing devices provided in different sample trays and corresponding to each other. The third driving device is connected to the controller.

[0009] Furthermore, in a preferred embodiment of the present invention, the above-mentioned fixing device includes a base plate with both ends connected to the screw, a fixing bolt vertically connected to the base plate, and a nut movably connected to the fixing bolt; in use, the solid sample to be tested is fixed between the base plate and the nut, and threaded holes perpendicular to the extension direction of the base plate are opened at both ends of the base plate, and the screw is connected to the base plate through the threaded holes.

[0010] Furthermore, in a preferred embodiment of the present invention, the sample slots are arranged at equal intervals on the sample disk.

[0011] Furthermore, in a preferred embodiment of the present invention, the diameter of the sample disk is defined by any of the sample slots, and adjacent sample slots are staggered in a direction perpendicular to the diameter.

[0012] Furthermore, in a preferred embodiment of the present invention, the rotating device further includes a grating ruler disposed on the annular frame.

[0013] The beneficial effects of this invention are as follows: The multifunctional sample stage of the small-angle X-ray scattering instrument of this invention can simultaneously control the sample rotation angle and tensile force variables, enabling in-situ research on the structural evolution and performance relationships of materials during complex processing under stress changes, and allowing for the simultaneous placement of multiple solid samples for testing. This facilitates individual measurement of each sample, improves measurement efficiency, and offers advantages such as multiple controllable variables. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the multifunctional sample stage and the solid sample to be tested used in a small-angle X-ray scattering instrument according to an embodiment of the present invention;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a schematic diagram of the structure of the rotating shaft and sample disk in an embodiment of the present invention;

[0018] Figure 4 This is a first structural schematic diagram of the tensioning device according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the second structure of the stretching device according to an embodiment of the present invention.

[0020] Icons: 110-Rotating device; 120-Loading device; 190-Solid sample to be tested; 111-Base; 112-Ring frame; 113-Grating ruler; 114-Ring rack; 115-Gear; 116-First driving device; 121-Fixing frame; 122-Sample tray; 123-Rotating shaft; 124-Second driving device; 125-Tensioning device; 126-Sample groove; 131-Screw; 132-Third driving device; 133-Base; 134-Fixing bolt; 135-Nut. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example

[0026] Please refer to Figure 1 This embodiment provides a multifunctional sample stage for a small-angle X-ray scattering instrument, which includes a rotating device 110, a loading device 120, and a controller (not shown in the figure). The rotating device 110 is connected to the loading device 120, and the controller (not shown in the figure) is connected to the rotating device 110 and the loading device 120.

[0027] Please refer to Figure 1 and Figure 2The rotating device 110 includes a base 111, a ring frame 112, a rotating assembly (not shown in the figure), and a grating ruler 113. The ring frame 112 is mounted on the base 111. The rotating assembly is mounted on the ring frame 112. The grating ruler 113 is mounted on the ring frame 112. The rotating assembly includes a ring rack 114, a gear 115, and a first driving device 116. The ring rack 114 is located on the outside of the ring frame 112, and the gear 115 meshes with the ring rack 114. The first driving device 116 is connected to the gear 115 and drives the gear 115. The first driving device 116 drives the gear 115 to rotate, which in turn drives the ring rack 114, thereby driving the rotation of the ring frame 112. A loading device 120 is fixedly connected to the ring rack 114. A controller is connected to the first driving device 116 to control the first driving device 116.

[0028] It should be noted that in this embodiment, the rotating device 110 includes a grating ruler 113 to improve the accuracy of the rotation angle. In other embodiments, the technical effect of rotating the sample can be achieved without the grating ruler 113, and this is also within the scope of protection of this embodiment.

[0029] Please refer to Figure 1 and Figure 3 The loading device 120 includes two fixing frames 121, two sample trays 122, a rotating shaft 123, a second driving device 124 for controlling the rotating shaft 123, and a stretching device 125 for fixing the solid sample 190 to be tested. The two fixing frames 121 are symmetrically arranged on the annular frame 112. The two sample trays 122 are arranged opposite each other, and each sample tray 122 has six sample slots 126 arranged in a ring. The sample slots 126 are equidistantly spaced on the sample trays 122. It should be noted that in this embodiment, the sample slots 126 are equidistantly spaced on the sample trays 122. In other embodiments, they may be unequally spaced, as long as different solid samples 190 do not interfere with each other during the detection process, they are all within the protection scope of this embodiment. In other embodiments, each sample tray 122 may not have six sample slots, as long as it can hold multiple solid samples to be tested, it is within the protection scope of this embodiment. The two ends of the stretching device 125 are respectively disposed in the sample slots 126. The two sample slots 126 are located on different sample disks 122 and correspond to each other. The diameter of the sample disk 122 is drawn through any sample slot 126, and adjacent sample slots 126 are staggered in a direction perpendicular to the diameter. This is to ensure that when testing a certain solid sample 190, it is not affected by other solid samples 190. The controller is connected to the second drive device 124 to control the second drive device 124.

[0030] A rotating shaft 123 passes through and is fixedly connected to the sample tray 122, with its two ends movably connected to two fixed frames 121. A second driving device 124 is connected to the rotating shaft 123. A stretching device 125 is used to fix the solid sample 190 to be tested, with its two ends respectively set in the sample slots 126 of different sample trays 122. The line connecting the two fixed frames 121 is parallel to the diameter of the annular frame 112. Furthermore, the inner side of the fixed frame 121 is provided with an internal rack (not shown in the figure) that cooperates with the annular rack 114. The first driving device 116 drives the gear 115 to rotate, which can drive the fixed frame 121 to rotate, thereby driving the entire loading device 120 to rotate, thus realizing the angular rotation of the solid sample 190 to be tested. The sample trays 122 are symmetrically arranged between the two fixed frames 121, and the fixed frames 121 are perpendicular to the plane where the annular frame 112 is located. The sample slots 126 respectively set on the two sample trays 122 correspond one-to-one. In use, the two ends of the solid sample 190 to be tested are clamped in two tensile devices 125, which are arranged in two sample slots 126 and correspond to each other. The solid sample 190 to be tested is parallel to the line connecting the two fixing frames 121.

[0031] Please refer to Figure 4 and Figure 5 The tensile device 125 includes a fixing device, a screw 131, and a third drive device 132. The third drive device 132 is connected to the screw 131. There are two screws 131 arranged in parallel. One end of the screw 131 is provided with a left-hand thread, and the other end is provided with a right-hand thread. The left-hand thread and the right-hand thread are respectively connected to the two fixing devices. The two fixing devices are arranged in different sample trays 122 and correspond to each other. The fixing device includes a base plate 133, a fixing bolt 134, and a nut 135. The two ends of the base plate 133 have threaded holes perpendicular to the extension direction of the base plate 133. The two ends of the screw 131 are connected to the base plate 133 through the threaded holes. The fixing bolt 134 is vertically connected to the base plate 133. The nut 135 is movably connected to the fixing bolt 134. In use, the solid sample 190 to be tested is fixed between the base plate 133 and the nut 135. It should be noted that one end of the solid sample 190 to be tested can be sleeved on the fixing bolt 134 and then tightened with the nut 135. Alternatively, one end of the solid sample 190 to be tested can be clamped between the nut 135 and the base plate 133, with the fixing bolt 134 serving only to fix the nut 135. The controller is connected to the third drive device 132 to control the third drive device 132.

[0032] Please refer to Figures 1-5The working principle of the multifunctional sample stage used in small-angle X-ray scattering is as follows: (1) Multiple solid samples 190 to be tested are fixed between nuts 135 and fixing bolts 134. (2) The second drive device 124 is turned on by the controller, the rotating shaft 123 rotates and drives the sample disk 122 to rotate. Multiple solid samples 190 to be tested are set on the sample disk 122. As the sample disk 122 rotates, when a certain solid sample 190 to be tested is at the lowest position of the plane where the ring frame 112 is located, the solid sample 190 to be tested is measured. (3) The first drive device 116 is turned on by the controller to control the gear 115 to rotate. The gear 115 transmits to the ring rack 114 to drive the ring frame 112 to rotate a certain angle, which in turn drives the loading device 120 to rotate, thereby realizing the rotation of the solid sample 190 to be tested at a certain angle, changing the angle variable, and making it convenient to adjust the appropriate angle for measurement. (4) The third drive device 132 is activated by the controller. Driven by the screw 131, the two base plates 133 connected to both ends of the same solid sample 190 to be tested move in different directions, thereby achieving the stretching or shrinking of the solid sample 190 to be tested. This enables in-situ research on the structural evolution and performance relationship of materials during complex processing under stress changes, and has the advantages of cross-structural scale and multiple controllable variables.

[0033] In summary, this invention provides a multifunctional sample stage for a small-angle X-ray scattering instrument. This device can simultaneously control the sample rotation angle and tensile force variables, enabling in-situ research on the structural evolution and property relationships of materials during complex stress-induced processing. It also allows for the simultaneous placement of multiple solid samples for testing. This facilitates individual measurement of each sample, improving measurement efficiency and offering advantages such as multiple controllable variables.

[0034] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multifunctional sample stage for a small-angle X-ray scattering instrument, characterized in that, It includes a rotating device, a loading device connected to the rotating device, and a controller connected to the rotating device and the loading device; The rotating device includes a base, an annular frame connected to the base, and a rotating assembly disposed on the annular frame; the rotating assembly includes an annular rack disposed on the outside of the annular frame, a gear cooperating with the annular rack, and a first driving device for controlling the gear; the first driving device is connected to the controller, and the loading device is fixedly connected to the annular rack. The loading device includes two symmetrically arranged fixing frames on the annular frame, two oppositely arranged sample trays with multiple sample slots in the annular shape, a rotating shaft passing through the sample trays and fixedly connected to the fixing frames at both ends, a second driving device for controlling the rotating shaft, and a stretching device for fixing the solid sample to be tested; the line connecting the two fixing frames is parallel to the diameter of the annular frame, and the inner side of the fixing frame is provided with an internal rack that cooperates with the annular rack; the sample trays are symmetrically arranged between the two fixing frames and perpendicular to the plane of the annular frame, and the sample slots on the two sample trays correspond one-to-one; the two ends of the stretching device are respectively disposed in the sample slots of the different sample trays, and the stretching device fixes one end of the solid sample to be tested, so that the solid sample to be tested is parallel to the line connecting the two fixing frames; the second driving device is connected to the controller. The stretching device includes two fixing devices, two parallel screws, and a third driving device connected to the screws. One end of each screw is provided with a left thread and the other end is provided with a right thread. The left thread and the right thread are respectively connected to two fixing devices provided in different sample trays and corresponding to each other. The third driving device is connected to the controller.

2. The multifunctional sample stage for a small-angle X-ray scattering instrument according to claim 1, characterized in that, The fixing device includes a base plate with both ends connected to the screw, a fixing bolt vertically connected to the base plate, and a nut movably connected to the fixing bolt. In use, the solid sample to be tested is fixed between the base plate and the nut. The base plate has threaded holes at both ends that are perpendicular to the extension direction of the base plate, and the screw is connected to the base plate through the threaded holes.

3. A multifunctional sample stage for a small-angle X-ray scattering instrument according to claim 1, characterized in that, The sample slots are arranged at equal intervals on the sample plate.

4. A multifunctional sample stage for a small-angle X-ray scattering instrument according to claim 1, characterized in that, The diameter of the sample disk is taken through any of the sample slots, and two adjacent sample slots are staggered in a direction perpendicular to the diameter.

5. A multifunctional sample stage for a small-angle X-ray scattering instrument according to claim 1, characterized in that, The rotating device also includes a grating ruler mounted on the ring frame.

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