Sample piece preparation device

Abstract

The utility model provides a sample piece preparation device which is used for preparing a sample piece for silica gel testing, and the device comprises a base which is used for bearing a sample piece material which comprises a first material sheet, a silica gel layer and a second material sheet which are stacked in sequence; the guide frame is bridged at the two ends of the base, the guide frame comprises a guide rod, the guide rod is suspended above the base, and a guide hole facing one side of the base is formed in the guide rod; the pressing rod is arranged in the guide hole in a penetrating mode and can move along the guide hole. The pressing rod is used for moving along the guide hole to press the first material piece, the silica gel layer and the second material piece together to form a sample piece, the silica gel layer is pressed to a proper thickness according to the requirement of a subsequent shear force test, redundant silica gel overflows from the position between the first material piece and the second material piece, and therefore the thickness of the silica gel layer is accurately controlled. In addition, the sample piece material can be continuously and stably pressed for a long time, so that the sample piece material is stably bonded, and the problem that the thickness of the silica gel layer rebounds due to the elasticity of the silica gel layer can be relieved.

Description

Technical Field

[0001] The present application belongs to the field of photovoltaic cell technology, and in particular relates to a sample preparation device. Background Art

[0002] In the photovoltaic field, shear testing is often used to evaluate the performance of silicone materials under shear stress. Before performing a shear test on silicone, a corresponding specimen of the silicone to be tested must be prepared. The silicone to be tested is clamped between two parallel plates until the silicone is bonded and solidified to form a specimen. During the test, a force parallel to the surface of the plates is applied until the silicone sample fails in shear.

[0003] However, existing test pieces are usually made by manually pressing two plates, which easily leads to inconsistent silicone thickness in multiple test pieces, resulting in large fluctuations in test results and affecting the accuracy of silicone test results. Utility Model Content

[0004] The embodiments of the present application provide a sample preparation device to solve or alleviate one or more technical problems in the prior art.

[0005] In a first aspect, an embodiment of the present application provides a sample preparation device for preparing a sample for a silicone test, the device comprising:

[0006] A base, used to support a sample material, wherein the sample material includes a first sheet, a silicone layer, and a second sheet stacked in sequence;

[0007] A guide frame is connected across both ends of the base, the guide frame includes a guide rod, the guide rod is suspended above the base, and the guide rod is provided with a guide hole toward the base;

[0008] A pressure rod is inserted into the guide hole and is movable along the guide hole;

[0009] The pressing rod is used to move along the guide hole to press the first material sheet, the silicone layer, and the second material sheet together to form a sample piece.

[0010] Optionally, the pressure rod is threadedly engaged with the guide hole.

[0011] Optionally, the device further comprises a pressing plate, which is fixed to one end of the pressure rod close to the base.

[0012] Optionally, the base includes:

[0013] base plate;

[0014] two convex edges, fixed to opposite ends of the bottom plate;

[0015] Wherein, the bottom plate and the two convex edges are arranged to form a receiving groove.

[0016] Optionally, the device further includes a carrier, which is detachably mounted in the receiving tank and is used to carry the sample material.

[0017] Optionally, the device further comprises a bolt;

[0018] At least one of the convex edges is provided with a screw hole facing the carrier;

[0019] Wherein, the bolt is passed through the screw hole and abuts against the carrier.

[0020] Optionally, the first material sheet and the second material sheet overlap at least partially, and the silicone layer is located between the overlapping area of the first material sheet and the second material sheet;

[0021] The carrier is provided with a first groove, and the first groove is used to carry the sample material;

[0022] The pressing rod is used to press the overlapping area of the first material sheet, the silicone layer and the second material sheet.

[0023] Optionally, the device further comprises a gasket, which is used to be placed in the first groove to support the first material sheet or the second material sheet.

[0024] Optionally, a second groove is further provided on the carrier, the length direction of the second groove is perpendicular to the length direction of the first groove, the second groove is connected to the first groove, and the depth of the second groove is greater than the depth of the first groove.

[0025] Optionally, there are a plurality of first grooves, and the plurality of first grooves are arranged on the carrier at intervals;

[0026] There are multiple pressing rods, and the distance between two adjacent pressing rods is the same as the distance between two adjacent first grooves.

[0027] The above technical solution adopted in the embodiments of the present application may have the following advantages:

[0028] In this embodiment, a pressure rod moves along a guide hole to press the first sheet, silicone layer, and second sheet together to form a specimen. The silicone layer can then be pressed to the appropriate thickness for subsequent shear force testing. Excess silicone will overflow between the first and second sheets, allowing for precise control of the silicone layer thickness. This application also allows for sustained, stable pressing of the specimen material over a long period of time, ensuring stable bonding of the specimen materials and alleviating the issue of silicone layer thickness rebound caused by the elasticity of the silicone layer.

[0029] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0031] Figure 1 A schematic structural diagram of a sample preparation device provided in an embodiment of the present application;

[0032] Figure 2 Another schematic diagram of the structure of the sample preparation device provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of the combination of sample materials in an embodiment of the present application;

[0034] Figure 4 A schematic diagram of a sample preparation device provided in an embodiment of the present application pressing a sample material;

[0035] Figure 5 A schematic diagram of the structure of a carrier in the specimen preparation device provided in an embodiment of the present application;

[0036] Figure 6 Another structural schematic diagram of a carrier in the specimen preparation device provided in an embodiment of the present application;

[0037] Figure 7 This is another structural schematic diagram of the sample preparation device provided in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] Base 11; bottom plate 111; flange 113; fixing bolt 115; fixing rod 121; guide rod 123; guide sleeve 125; pressure rod 13; carrier 14; first groove 141; second groove 142; gasket 15; first material sheet 21; second material sheet 22; silicone layer 25. DETAILED DESCRIPTION

[0040] Embodiments of the present application are described in detail below, with examples of the embodiments illustrated in the accompanying drawings. In the accompanying drawings, the sizes of layers, regions, and components, as well as their relative sizes, may be exaggerated for clarity. Throughout, the same or similar reference numerals represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative and intended only to explain the present application, and are not to be construed as limiting the present application.

[0041] It should be understood that when an element or layer is referred to as being "on," "adjacent to," "connected to," or "coupled to" another element or layer, it can be directly on, adjacent to, connected to, or coupled to the other element or layer, or there can be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers. It should be understood that while the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are merely used to distinguish one element, component, region, layer, or portion from another. Thus, without departing from the teachings of the present application, a first element, component, region, layer, or portion discussed below may be represented as a second element, component, region, layer, or portion. Furthermore, when a second element, component, region, layer, or portion is discussed, it does not necessarily mean that the first element, component, region, layer, or portion is present in the present application.

[0042] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] In the present application, when it comes to a numerical interval (i.e., a numerical range), unless otherwise specified, the distribution of the optional numerical values in the numerical interval is considered to be continuous, and includes the two numerical endpoints (i.e., the minimum and maximum values) of the numerical interval, and each numerical value between the two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to an integer in the numerical interval, including the two endpoint integers of the numerical range, and each integer between the two endpoints, is equivalent to directly enumerating each integer. When multiple numerical ranges are provided to describe a feature or characteristic, these numerical ranges can be merged. In other words, unless otherwise specified, the numerical range disclosed in this application should be understood to include any and all subranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. "Numerical interval" allows broadly including quantitative intervals such as percentage intervals, ratio intervals, and ratio intervals.

[0045] The present invention provides a sample preparation device for precisely controlling the thickness of the silicone layer of the sample. See below for details.

[0046] Hereinafter, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein.

[0047] See also Figures 1 to 4 The present invention provides a sample preparation device, which includes a base 11, a guide frame, and a pressure rod 13. The following is a detailed description:

[0048] The base 11 is used to carry the sample material, which includes a first material sheet 21 , a silicone layer 25 , and a second material sheet 22 stacked in sequence.

[0049] Specifically, the structural materials bonded by silicone in the photovoltaic field usually contain aluminum, so the first sheet 21 and the second sheet 22 can be made of aluminum to simulate the actual shear force environment. The silicone layer 25 is the silicone used for subsequent shear force testing.

[0050] The guide frame spans across both ends of the base 11 and includes a guide rod 123 suspended above the base 11. The guide rod 123 is provided with a guide hole (not shown) facing the base 11. In this embodiment, the guide frame may further include two fixed rods 121, each fixed to opposite ends of the base 11. The guide rod 123 spans the two fixed rods 121. In other embodiments, the number of fixed rods 121 may also be other numbers, such as three or four, to increase the stability of the guide rod 123.

[0051] The pressure rod 13 passes through a guide hole on the guide rod 123 and can move along the guide hole toward the side of the base 11. When preparing the specimen, the first sheet 21, the silicone layer 25, and the second sheet 22 are stacked in sequence on the base 11 and below the pressure rod 13. The pressure rod 13 is then moved downward to press the overlapping area of the first sheet 21, the silicone layer 25, and the second sheet 22. The pressure rod 13 can press the silicone layer 25 to the appropriate thickness based on the thickness of the silicone layer 25 required for the subsequent shear force test. Excess silicone will overflow from between the first sheet 21 and the second sheet 22, thereby precisely controlling the thickness of the silicone layer 25 between the first sheet 21 and the second sheet 22. This embodiment can also continuously and stably press the specimen material for a long time, ensuring stable bonding of the specimen materials and alleviating the problem of silicone layer 25 thickness rebound caused by the elasticity of the silicone layer 25.

[0052] In one embodiment, the pressure rod 13 is threadedly engaged with the guide hole. The pressure rod 13 can be rotated along the threads in the guide hole to move closer to or further away from the base 11. By rotating the threads, the direction and distance of movement of the pressure rod 13 can be more accurately controlled. When the end of the pressure rod 13 contacts the sample material, the pressure rod 13 can be slowly rotated to gradually press down, avoiding the situation where the thickness of the silicone layer 25 of the pressed sample does not meet the requirements due to excessive instantaneous pressure.

[0053] Preferably, a guide sleeve 125 is provided below the guide rod 123. The guide sleeve 125 has a through hole that matches the guide hole, and the through hole is provided with threads that match the threads of the guide hole. The pressure rod 13 can move along the guide hole and the through hole of the guide sleeve 125. The guide sleeve 125 can limit the movement direction of the pressure rod 13, preventing the pressure rod 13 from deviating and misaligning with the sample material to be pressed.

[0054] In other embodiments, the guide sleeve 125 may be provided only below the guide rod 123. The outer wall of the guide sleeve 125 may be provided with a fixing hole. When the pressing rod 13 is moved along the guide sleeve 125 and the sample material is pressed to a suitable thickness, a bolt may be passed through the fixing hole to abut against the guide rod 123, thereby fixing the guide rod 123 and pressing the sample material.

[0055] In one embodiment, the pressing rod 13 may be further marked with a scale, so that the distance the pressing rod 13 is pressed down can be judged by the scale at the position where the pressing rod 13 is exposed from the guide sleeve 125 .

[0056] In one embodiment, the sample device may further include a pressing sheet (not shown), which is fixed to one end of the pressing rod 13 close to the base 11. The projection of the pressing sheet on the sample material may be circular or rectangular.

[0057] Providing a pressing piece at the end of the pressing rod 13 can increase the stressed and compressed area of the sample material, make the pressure more balanced, and reduce the cracking and warping of the first and second pieces 21 and 22 due to excessively concentrated force.

[0058] Specifically, a thread groove can be provided on one side of the pressing piece away from the base 11, and a thread matching the thread groove is provided at the end of the pressing rod 13, so that the pressing piece can be detachably mounted on the end of the pressing rod 13 through the thread groove. The pressing piece can also be replaced or removed from the pressing rod 13 as needed.

[0059] In one embodiment, the base 11 includes a bottom plate 111 and two flanges 113, each of which is fixed to opposite ends of the bottom plate 111. If the guide frame includes two fixing rods 121, each fixing rod 121 can be fixed to each flange 113. The bottom plate 111 and the two flanges 113 form a receiving groove (not shown).

[0060] The bottom plate 111 can be used to support the specimen material. The raised edges 113 at both ends of the bottom plate 111 can be used to cooperate with the fixed guide frame and also prevent the specimen material from detaching from the bottom plate 111. During the lamination process of the specimen material, when the silicone layer 25 is squeezed, excess silicone will overflow from between the first sheet 21 and the second sheet 22. The overflowed silicone will adhere to the bottom plate 111. To keep the base 11 clean, after the specimen is lamination and removed, the silicone on the bottom plate 111 can be scraped off.

[0061] In this embodiment, please combine Figures 1 to 4 , see Figure 5 The sample preparation device further includes a carrier 14 , which is detachably mounted in the receiving groove. When the carrier 14 is mounted in the receiving groove of the base 11 , the carrier 14 can be used to carry the sample material.

[0062] The carrier 14 is detachably mounted on the base 11, allowing operators to conveniently position and adjust the sample material from the outside, then place the carrier 14 and the sample material into the receiving tank. Once the sample is prepared, the carrier 14 and the sample can be removed from the base 11. Furthermore, the carrier 14 can be removed and cleaned separately to remove any excess glue, making it easier to clean.

[0063] Furthermore, the device further includes a fixing bolt 115 , and at least one flange 113 is provided with a screw hole (not shown) facing the carrier 14 , and the fixing bolt 115 is used to pass through the screw hole and abut against the carrier 14 .

[0064] After the carrier 14 is installed in the receiving groove, the tightness of the fixing bolts 115 is adjusted to facilitate the movement of the carrier 14 along the length direction of the convex strip and to accurately calibrate the position of the carrier 14 to ensure the correct pressing of the sample material.

[0065] Furthermore, the fixing bolts 115 abut the carrier 14, firmly securing the carrier 14 within the receiving slot. This prevents the carrier 14 from moving or sliding during the sample pressing process, ensuring that the sample material remains in a stable position during the pressing process. To clean, disassemble, or move the carrier 14, simply loosen the fixing bolts 115, making the operation quick and easy.

[0066] In a preferred embodiment, two screw holes are defined on each flange 113 , and the screw holes on each flange 113 face toward the other flange 113 .

[0067] By adjusting the length of the fixing bolts 115 on the flange 113 protruding from the screw hole, the position of the carrier 14 between the two flanges 113 can be adjusted. For example, by tightening the fixing bolts 115 on one of the flanges 113 and loosening the fixing bolts 115 on the other flange 113, the carrier 14 can be moved between the two flanges 113 to calibrate the position of the carrier 14, further ensuring that the pressure rod 13 can be aligned with the sample material.

[0068] like Figure 5 As shown, in this embodiment, the carrier 14 is provided with a first groove 141 for holding the sample material. The first sheet 21 and the second sheet 22 of the sample overlap at least partially, and the silicone layer 25 is located between the overlapping region of the first and second sheets 21, 22. The pressing rod 13 is used to press the overlapping region of the first sheet 21, silicone layer 25, and second sheet 22 to press the sample material together.

[0069] In a preferred embodiment, the width of the first groove 141 is the same as the width of the first and second material sheets 21, 22. The first groove 141 can accurately position the sample material on the carrier 14, ensuring that the projections of the first and second material sheets 21, 22 are on the same straight line. The inner wall of the first groove 141 can also prevent the sample from shifting during the pressing process, thereby improving the positioning accuracy of the sample.

[0070] In one embodiment, there may be multiple first grooves 141, which are spaced apart on the carrier 14. There may also be multiple pressing rods 13, with one pressing rod 13 corresponding to one first groove 141. Multiple pressing rods 13 can simultaneously press multiple groups of sample materials, allowing for simultaneous observation of multiple groups of sample materials and facilitating uniform pressing heights for multiple groups of sample materials.

[0071] Furthermore, if Figure 4 As shown, in this embodiment, the device may further include a gasket 15 , which is used to be placed in the first groove 141 to support the first material piece 21 or the second material piece 22 .

[0072] The gasket 15 provides support for the sheet it supports, preventing deformation or damage during the lamination process due to thinness or insufficient strength. Furthermore, the gasket 15 allows the specimen material to be more evenly stressed during the lamination process, reducing localized uneven stress on the specimen and ensuring a uniform thickness of the silicone layer 25 between the sheets.

[0073] The thickness of the gasket 15 can be determined based on the required thickness of the silicone layer 25 and the thickness of the first material 21 / second material 22. For example, the thickness of the first material 21 and the second material 22 is 1 cm, and the required thickness of the silicone layer 25 of the specimen is 0.5 cm. The gasket 15 is used to support the second material 22. To ensure that the second material 22 remains horizontally stable, the thickness of the gasket 15 can be the sum of the thickness of the first material 21 and the required thickness of the silicone layer 25, that is, 1.5 cm.

[0074] Specifically, the material of the gasket 15 can be polytetrafluoroethylene (PTFE). The gasket 15 of this material has a low friction coefficient and physical strength, can better support the sheet, and has a good anti-stick effect, is not easy to adhere to the silicone that overflows between the sheets, and is easy to clean the silicone that overflows and adheres to it. The material of the base 11 can also be polytetrafluoroethylene (PTFE).

[0075] In other embodiments, the material of the gasket 15 may also be polyimide (PI), graphite, or the like.

[0076] Please continue reading Figure 6 and Figure 7In one embodiment, a second groove 142 is further provided on the carrier 14 , the length direction of the second groove 142 is perpendicular to the length direction of the first groove 141 , the second groove 142 is connected to the first groove 141 , and the depth of the second groove 142 is greater than the depth of the first groove 141 .

[0077] Positioning the overlapping area of the first sheet 21, silicone layer 25, and second sheet 22 in correspondence with the second groove 142 allows any silicone that overflows during the lamination of the sample material to flow into the second groove 142, preventing the overflowed silicone from adhering to the sheet. Preferably, the length of the second groove 142 extends through the carrier 14. To clean the silicone in the second groove 142, simply scrape the scraper along the length of the second groove 142, making cleaning easier.

[0078] In this embodiment, Figure 6 As shown, the second groove 142 divides the first groove 141 into a discontinuous third groove (not labeled) and a fourth groove (not labeled), respectively located on either side of the second groove 142. When placing the sample material on the carrier 14, the portion of the sheet below the silicone layer 25 can be placed in the third groove, with the end of the sheet at least partially located in the fourth groove, so that the sheet below the silicone layer 25 overlaps the top of the second groove 142. This arrangement provides support points at both ends of the sheet below the silicone layer 25, preventing the sheet from being pressed into the second groove 142 when the pressure rod 13 is pressed downward, causing the sheet to warp.

[0079] In one embodiment, if Figure 7 As shown, there are multiple first grooves 141, spaced apart on the carrier 14. There are multiple pressing rods 13, with the spacing between two adjacent pressing rods 13 being the same as the spacing between two adjacent first grooves. The multiple pressing rods 13 can simultaneously press multiple sets of specimen materials, allowing for simultaneous observation and ensuring uniform press height across the multiple sets. Furthermore, the spacing between the multiple first grooves 141 can prevent interference between the multiple sets of specimen materials.

[0080] The length of the second grooves 142 on the carrier 14 can be perpendicular to the length of the first grooves 141 and connect all first grooves 141. When multiple specimens are pressed together, any excess silicone from these specimens flows into the second grooves 142. For cleaning, simply scrape the excess silicone along the length of the second grooves 142, making cleaning easy.

[0081] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present application. The directional terms "inside" and "outside" refer to the inside and outside relative to the outline of the component itself. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "on top of other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Therefore, the exemplary term "above..." can include both "above..." and "below..." orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here will be interpreted accordingly.

[0082] It should also be noted that references to "one embodiment," "another embodiment," "an embodiment," etc., in this application refer to specific features, structures, or characteristics described in conjunction with that embodiment as included in at least one embodiment generally described in this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is intended that such feature, structure, or characteristic, when implemented in conjunction with other embodiments, also fall within the scope of this application.

[0083] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0084] It should also be noted that the above are only preferred embodiments of the present application and do not limit the scope of patent protection of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of the present application.

Claims

1. A sample preparation device, characterized in that: For preparing a sample piece for silica gel testing, the device comprises: A base, used to support a sample material, wherein the sample material includes a first sheet, a silicone layer, and a second sheet stacked in sequence; A guide frame is connected across both ends of the base, the guide frame includes a guide rod, the guide rod is suspended above the base, and the guide rod is provided with a guide hole toward the base; A pressure rod is inserted into the guide hole and is movable along the guide hole; The pressing rod is used to move along the guide hole to press the first sheet, the silicone layer, and the second sheet together to form a sample piece; Wherein, the base comprises: base plate; two convex edges, fixed to opposite ends of the bottom plate; Wherein, the bottom plate and the two convex edges are arranged to form a receiving groove; The device further comprises a carrier, which is detachably mounted in the receiving tank and is used for carrying the sample material.

2. The sample preparation device according to claim 1, characterized in that: The pressing rod is threadably matched with the guide hole.

3. The sample preparation device according to claim 1, characterized in that: The device further comprises a pressing sheet, which is fixed to one end of the pressing rod close to the base.

4. The sample preparation device according to claim 1, characterized in that: The device also includes a bolt; At least one of the convex edges is provided with a screw hole facing the carrier; Wherein, the bolt is passed through the screw hole and abuts against the carrier.

5. The sample preparation device according to claim 1, characterized in that: The first material sheet and the second material sheet overlap at least partially, and the silicone layer is located between the overlapping area of the first material sheet and the second material sheet; The carrier is provided with a first groove, and the first groove is used to carry the sample material; The pressing rod is used to press the overlapping area of the first material sheet, the silicone layer and the second material sheet.

6. The sample preparation device according to claim 5, characterized in that: The device further includes a gasket, which is used to be placed in the first groove to support the first material sheet or the second material sheet.

7. The sample preparation device according to claim 5, characterized in that: The carrier is further provided with a second groove, the length direction of the second groove is perpendicular to the length direction of the first groove, the second groove is connected to the first groove, and the depth of the second groove is greater than the depth of the first groove.

8. The sample preparation device according to claim 5, characterized in that: There are a plurality of first grooves, and the plurality of first grooves are arranged on the carrier at intervals; There are multiple pressing rods, and the distance between two adjacent pressing rods is the same as the distance between two adjacent first grooves.

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