Detection carrier, calibration device and surface density instrument

Abstract

The utility model provides a detection carrier, a calibration device and an area density instrument, and belongs to the field of battery detection equipment. The detection carrier comprises a rotating tray, mounting discs and a driving part, a plurality of mounting holes are formed in the rotating tray in the circumferential direction, the mounting discs are connected with the rotating tray through the mounting holes, and the mounting discs are used for detachably mounting detection pieces for surface density detection; the driving part is in transmission connection with the rotating tray to drive the rotating tray to rotate. According to the detection carrier provided by the embodiment of the invention, the detection sheets can be quickly replaced, and the detection efficiency of surface density detection is improved.

Description

Technical Field

[0001] The present application relates to the field of battery testing equipment, and in particular to a testing carrier, a calibration device and an area density meter. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] The pole piece is an important component of the battery. During the battery production process, it is usually necessary to test the coating effect of the pole piece to evaluate the production quality of the pole piece. Generally, multiple sets of test pieces can be tested by an area density meter, and the coating effect of the pole piece can be evaluated based on the test results. However, the area density meter in the related art is relatively cumbersome to install and position the test piece, and it takes a lot of time to replace the test piece, and the detection efficiency needs to be improved. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the background technology. To this end, one object of the present application is to provide a detection carrier, a calibration device and an areal density meter to improve the efficiency of areal density detection.

[0005] An embodiment of the first aspect of the present application provides a detection carrier, including: a rotating tray, the rotating tray is provided with a plurality of mounting holes along the circumference, a plurality of mounting disks, the mounting disks are connected to the rotating tray through the mounting holes, the mounting disks are used for detachably installing a detection sheet for surface density detection; a driving component, which is transmission-connected to the rotating tray to drive the rotating tray to rotate.

[0006] In the technical solution of the embodiment of the present application, a plurality of mounting plates can be installed on the rotating tray of the detection carrier, and the detection sheet can be detachably installed in the mounting plate, which is conducive to the rapid installation and rapid removal of the detection sheet. The driving component drives the rotating tray to rotate so that the surface density meter detects each detection sheet on the rotating tray in turn, completes the detection of multiple detection sheets, avoids frequent manual sample changes, and improves the detection efficiency. And because the rapid installation and removal of the detection sheet is achieved, the surface density meter can shorten the time of replacing different groups of detection sheets on the detection carrier when detecting multiple groups of detection sheets, and further improves the detection efficiency of the surface density detection.

[0007] In some embodiments, the mounting plate has a hollow portion, the mounting plate is detachably embedded in the mounting hole, and the hollow portion is connected to the mounting hole, and the detection sheet covers the hollow portion. In this way, two opposite surfaces of the detection sheet can be exposed, which is conducive to the passage of the detection ray and reduces the interference of other components on the detection results.

[0008] In some embodiments, the mounting plate includes a bearing portion and a pressing block, the hollow portion penetrates the bearing portion and the pressing block along the thickness direction, and the detection sheet is sandwiched between the bearing portion and the pressing block. This makes it easier to replace the detection sheet and improves detection efficiency.

[0009] In some embodiments, the bearing portion includes a step portion arranged along the circumference of the hollow portion, and the step portion is connected to the pressing block in a magnetic manner to clamp the detection piece. The magnetic connection can save the step of using other tools to assemble or disassemble the pressing block and the step portion, which is conducive to quickly replacing the detection piece and improving the detection efficiency.

[0010] In some embodiments, the step portion includes a first annular portion and a second annular portion sequentially arranged in a direction away from the center of the hollow portion; the detection sheet is mounted on the first annular portion, and a magnetic element is provided on the side of the second annular portion facing the pressing block. The first annular portion and the second annular portion are respectively provided with the detection sheet and the magnetic element, so that while providing a bearing function for the detection sheet, the pressing block can maintain sufficient magnetic attraction with the magnetic element, thereby improving the reliability of clamping the detection sheet.

[0011] In some embodiments, the second annular portion includes a plurality of inner recesses spaced apart along the circumferential direction, and the magnetic element includes a plurality of magnets respectively disposed in the plurality of inner recesses. The magnets are spaced apart along the circumferential direction of the second annular portion, thereby generating a plurality of magnetic attraction forces on the pressing block in the circumferential direction of the pressing block, so that the pressing block and the second annular portion are uniformly adsorbed, thereby increasing the clamping force on the detection sheet.

[0012] In some embodiments, one of the mounting plate and the mounting hole has a positioning protrusion, and the other of the mounting plate and the mounting hole has a positioning groove adapted to the positioning protrusion, and the positioning protrusion and the positioning groove cooperate to limit the mounting plate along the circumference of the mounting hole. By providing the positioning protrusion and the positioning groove, not only can the mounting plate and the mounting hole be limited in the circumference to achieve a more reliable position connection, but also the mounting position can be accurately positioned, thereby better meeting the detection requirements.

[0013] In some embodiments, the detection carrier further includes a rotation limiting structure for limiting the rotation angle of the rotating tray so that the detection sheets in the multiple mounting plates on the rotating tray can be detected in sequence, which is beneficial to reduce the position deviation caused by transmission and improve the accuracy of the detection results.

[0014] In some embodiments, the rotation limiting structure includes: a plurality of limiting grooves provided on the side surface of the rotating tray, the plurality of limiting grooves corresponding to the plurality of mounting plates one by one; and a locking portion, which is used to lock into the corresponding limiting grooves when the rotating tray rotates at a preset angle to limit the rotating tray. The limiting grooves and the locking portion constitute a mechanical limiting structure, which has a simple structural form and is conducive to improving the reliability of the rotation limiting structure in limiting the rotating tray, thereby improving the accuracy and efficiency of the detection results.

[0015] In some embodiments, the plurality of mounting holes on the rotating tray are arranged at equal intervals around the rotation center of the rotating tray; and the plurality of limiting grooves are arranged at equal intervals around the rotation center of the rotating tray. In this way, the rotating limiting structure limits the rotating tray after the rotating tray rotates the same preset angle each time, which is conducive to improving the accuracy of the rotating limiting structure in limiting the rotating tray and simplifying the control of the rotating limiting structure.

[0016] In some embodiments, the detection carrier further includes: a substrate that carries a rotating tray and a driving component, the substrate having a support shaft, the rotating tray being detachably disposed on the support shaft, the substrate being provided with a first through hole, and the rotating tray being configured to rotate around the support shaft so that a plurality of mounting holes are sequentially connected to the first through hole in a vertical direction. By providing the substrate, a mounting base can be provided for the rotating tray, and the installation arrangement of other components can also be facilitated. The first through hole can directly expose the detection sheet on the mounting disk during detection to reduce interference of other components with the detection ray, thereby improving the accuracy of the detection result.

[0017] In some embodiments, the detection carrier further includes: a dust cover, the dust cover cover is arranged on one side of the plurality of mounting plates away from the substrate, the dust cover is provided with a second through hole, and the second through hole is arranged vertically opposite to the first through hole. The dust cover can protect the detection sheet and reduce the influence of the surface density meter on the measurement accuracy of the detection sheet due to environmental changes. The second through hole is connected to the first through hole in the vertical direction, and can expose the surface of the detection sheet to be detected so as to detect the detection sheet.

[0018] The second aspect of the present application provides a calibration device for calibrating an area density meter, which includes the detection carrier in the above embodiment, and the detection sheet carried by the detection carrier is a calibration sheet for calibrating the area density meter. Since the detection carrier can realize the rapid installation and removal of the calibration sheet, when the area density meter detects multiple groups of detection sheets and calibrates the area density meter, the time for replacing different groups of calibration sheets on the detection carrier can be shortened, thereby improving the calibration efficiency.

[0019] The embodiment of the third aspect of the present application provides an areal density meter, which includes the detection carrier in the above embodiment. The detection sheet is detachably mounted in the mounting plate, which is conducive to the rapid installation and rapid removal of the detection sheet. When the areal density meter detects multiple groups of detection sheets, the multiple groups of detection sheets can be quickly replaced on the detection carrier, thereby improving the detection efficiency of the areal density detection.

[0020] The fourth aspect of the present application provides an area density meter, which includes a radiation detection device, the radiation detection device includes a radiation source and a detector arranged at intervals, and the calibration device in the above embodiment, the calibration device is configured to move the calibration sheets in multiple mounting plates to between the radiation source and the detector in sequence. Since the time for replacing the calibration sheets on the detection carrier is shortened, the calibration efficiency of the area density meter can be improved.

[0021] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0023] Figure 1 A schematic diagram of the exploded structure of a detection carrier according to some embodiments of the present application;

[0024] Figure 2 A schematic diagram of the three-dimensional structure of a detection carrier according to some embodiments of the present application;

[0025] Figure 3 A schematic diagram of a top view of a detection carrier according to some embodiments of the present application;

[0026] Figure 4 A schematic diagram of the three-dimensional structure of a rotating tray in a detection carrier in some embodiments of the present application;

[0027] Figure 5 A schematic diagram of a top view of a rotating tray in a detection carrier according to some embodiments of the present application;

[0028] Figure 6 for Figure 5 Cross-section view in the AA direction;

[0029] Figure 7 for Figure 3 Cross-section along the middle BB direction;

[0030] Figure 8 Schematic diagram of the exploded structure of the detection carrier of other embodiments of the present application;

[0031] Fig. 9 Schematic diagram of the top view structure of the detection carrier of other embodiments of the present application;

[0032] Fig.10 for Fig. 9 Cross-sectional view in the mid-CC direction;

[0033] Fig.11 A schematic diagram of the three-dimensional structure of an areal density meter according to some embodiments of the present application;

[0034] Fig.12 This is a schematic diagram of the main structure of the surface density meter of some embodiments of the present application;

[0035] Fig.13 This is a structural block diagram of an areal density meter according to some embodiments of the present application.

[0036] Description of reference numerals:

[0037] Step portion 1011, first annular portion 1011a, second annular portion 1011b, housing 1012, weighing unit 1091, thickness gauge control unit 1092, calibration control unit 1093, display screen 1094, communication interface 1095;

[0038] Rotating tray 100, mounting plate 101, bearing part 101a, pressing block 101b, driving component 102, rotation limiting structure 103, limiting groove 103a, locking part 103b, limiting control unit 103c, base plate 104, supporting shaft 104a, first through hole 104b, dust cover 105, second through hole 105a, base 106, supporting frame 107, column 107a, beam 107b, bearing frame 108, controller 109;

[0039] A ray source 30 and a detector 31;

[0040] Test piece 20;

[0041] Mounting hole 10, mounting portion 10a, hollow portion 11, inner recess 12, positioning protrusion 13, positioning groove 14, recess 15, mounting hole groove 16;

[0042] Detection vehicle 1. DETAILED DESCRIPTION

[0043] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0045] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0046] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0047] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0049] In the description of the embodiments of the present application, the technical 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. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0050] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0051] An areal density meter is a device that performs non-contact online detection of an object's areal density (weight per unit area). An areal density meter usually includes a radiation source and a detector. The radiation source can emit radiation, and the detector is used to detect the intensity of the radiation. The radiation emitted by the radiation source passes through the object to be measured and shoots toward the detector. When the radiation passes through the object to be measured, the intensity of the radiation will decay, and the attenuation ratio is negatively exponentially related to the density of the object to be measured. Therefore, the detector can infer the surface density of the object to be measured by measuring the intensity of the received radiation and comparing it with the intensity before the radiation passes through the object to be measured.

[0052] In the step of detecting the surface density of the test piece by the surface density meter, or in the step of calibrating the surface density meter, multiple test pieces are generally selected as the test objects for each test, in the hope of improving the accuracy of the test or the accuracy of the calibration by obtaining the test results of multiple test objects.

[0053] Multiple test sheets tested in the same test step are called a group of test sheets. The surface density of multiple test sheets in a group of test sheets can change in a step-by-step manner. The surface density meter will test the surface density of each test sheet in a group of test sheets in turn to obtain the test surface density. A group of test sheets will be assembled in the test carrier at the same time, and the radiation source of the surface density meter will send radiation to the test sheets in the test carrier in turn to obtain the surface density of the test sheets.

[0054] In addition, when the surface density meter is testing multiple groups of test pieces, it is necessary to replace the test pieces of the current group on the test carrier with the test pieces of the next group. However, the current test carrier has a complex structure and is a fastener structure, which is not easy to disassemble and quickly cut and pull to change the shape. The replacement rate of the test piece is low, which in turn leads to a low detection rate of the surface density meter for the test piece.

[0055] The embodiment of the present application provides a detection carrier, and a plurality of mounting plates can be installed on the rotating tray of the detection carrier, and the detection sheet can be detachably installed in the mounting plate, which is conducive to the rapid installation and rapid removal of the detection sheet. The driving component drives the rotating tray to rotate, so that the surface density meter detects each detection sheet on the rotating tray in turn, completes the detection of a group of detection sheets, avoids frequent manual sample changes, and improves the detection efficiency. And because the rapid installation and removal of the detection sheet is realized, the surface density meter can shorten the time of replacing different groups of detection sheets on the detection carrier when detecting multiple groups of detection sheets, and further improves the detection efficiency of the surface density detection.

[0056] The detection vehicle disclosed in the embodiment of the present application can be used in, but is not limited to, a battery detection device, and the detected battery can be used in electrical devices such as vehicles, ships, or aircraft. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, and the like. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0057] The pole piece is an important component of the battery. The pole piece usually includes a current collector layer and an active material layer. The active material layer is coated on the current collector layer. The thickness of the active material has a great influence on the battery's capacity, service life and other performance. If the thickness of the active material is too small, the battery capacity will be too low. If the thickness of the active material is too large, the battery capacity will be too high, and the battery will be prone to lithium deposition, reducing the battery life. Therefore, in the production process of the pole piece, it is necessary to detect the thickness of the active material layer to ensure the consistency of the pole piece surface density. The surface density meter has the characteristics of non-contact measurement, which can avoid the risk of traditional contact measurement equipment easily scratching the pole piece, and has a high measurement efficiency. It is suitable for measuring the surface density of the pole piece.

[0058] The detection sheet in the embodiment of the present application can be a pole piece to be tested or a calibration sheet. The pole piece to be tested can be a battery pole piece with coating on one side or both sides, and the battery pole piece can be obtained by sampling before the electrode assembly is assembled with other components or after the battery pole piece coating process is completed.

[0059] The calibration piece refers to a standard electrode used to calibrate the test results of the areal density meter, which has a preset surface density. During the use of the areal density meter, factors such as temperature and humidity in the external environment of the areal density meter are constantly changing, and the performance of the areal density meter will slowly drift over time, which will affect the accuracy of the measurement results. Therefore, before starting to use the areal density meter, the areal density meter needs to be calibrated. The purpose of calibration is to find the correlation between the measurement value of the measuring equipment and the surface density of the electrode, and to correct the surface density measured by the areal density meter through the calibration results, so as to reduce the measurement error of the areal density meter during the measurement process.

[0060] Taking the surface density meter used in the coating process as an example, in a calibration method in the related art, a plurality of calibration pieces are first cut from the qualified electrode pieces for coating, and the surface density of each sample piece is measured by electronic weighing (or other methods), and the surface density is usually referred to as the actual surface density of the calibration piece. Then, the surface density of the plurality of calibration pieces is measured by the surface density meter, and the surface density is usually referred to as the machine-measured surface density of the calibration piece. Afterwards, the machine-measured surface density of the plurality of calibration pieces is used as the independent variable, and the actual surface density of the plurality of calibration pieces is used as the dependent variable, and the machine-measured surface density and the actual surface density of the plurality of samples are linearly fitted to obtain a linear relationship between the machine-measured surface density and the actual surface density (i.e., the calibration result), and the linear relationship is stored in the surface density meter to complete the calibration of the surface density meter.

[0061] refer to Figures 1 to 7 , Figure 1 A schematic diagram of the exploded structure of a detection carrier according to some embodiments of the present application; Figure 2 A schematic diagram of the three-dimensional structure of a detection carrier according to some embodiments of the present application; Figure 3 A schematic diagram of a top view of a detection carrier according to some embodiments of the present application; Figure 4 A schematic diagram of the three-dimensional structure of a rotating tray in a detection carrier in some embodiments of the present application; Figure 5 A schematic diagram of a top view of a rotating tray in a detection carrier according to some embodiments of the present application; Figure 6 for Figure 5 Cross-section view in the AA direction; Figure 7 for Figure 3 Cross-sectional view along the BB direction.

[0062] An embodiment of the present application provides a detection carrier, which includes a rotating tray 100, a mounting disk 101 and a driving component 102. The rotating tray 100 is provided with a plurality of mounting holes 10 along the circumference. The plurality of mounting disks 101 are connected to the rotating tray 100 through the mounting holes 10. The mounting disk 101 is used for detachably mounting a detection sheet 20 for surface density detection. The driving component 102 is transmission-connected to the rotating tray 100 to drive the rotating tray 100 to rotate.

[0063] The rotating tray 100 is a disk-shaped bearing member, which can rotate around a central axis perpendicular to its surface under the drive of an external force. The mounting hole 10 passes through the rotating tray 100 along the thickness direction. The mounting plate 101 is fixed in the mounting hole 10 and is adapted to the shape of the mounting hole 10. The number of mounting plates 101 is the same as that of mounting holes 10 and corresponds one to one.

[0064] In some embodiments, the shape of the mounting hole 10 may be any one of a polygon, a circle or an ellipse. The shape of the mounting plate 101 may also be a polygon, a circle or an ellipse matching the shape of the mounting hole 10.

[0065] In some embodiments, the plurality of mounting holes 10 may be 4, 6, 8 or 10 or even more, and each mounting plate 101 is provided with a detection sheet 20, and the detection sheet 20 may be a pole piece to be tested, or a calibration sheet for calibrating an area density meter. In some embodiments, the detection sheets 20 provided with the plurality of mounting plates 101 carried on the rotating tray 100 may all be pole pieces to be tested, or may all be calibration sheets, or may be part of pole pieces to be tested and part of calibration sheets.

[0066] The driving component 102 drives the rotating tray 100 to rotate so as to rotate the mounting plate 101 to the detection station for surface density detection in sequence, and performs surface density detection on the detection sheet 20 in the mounting plate 101 at the detection station in sequence. The driving component 102 can be any structure that can drive the rotating tray 100 to rotate. In some embodiments, the driving mechanism 102 includes a motor, and a transmission member that is respectively connected to the motor and the rotating tray 100 in a transmission manner, so that the rotating tray 100 can rotate around the central axis under the drive of the motor. The transmission member can be any transmission structure, such as a gear transmission, a rack and pinion transmission, etc.

[0067] The detection sheet 20 is detachably mounted in the mounting plate 101, which is conducive to the rapid installation and rapid removal of the detection sheet 20. The driving component 102 drives the rotating tray 100 to rotate, so that the surface density meter detects each detection sheet 20 on the rotating tray 100 in turn, completes the detection of a group of detection sheets 20, avoids frequent manual sample changes, and improves the detection efficiency. And because the rapid installation and removal of the detection sheet 20 is achieved, when the surface density meter detects multiple groups of detection sheets 20, it can shorten the time of replacing different groups of detection sheets 20 on the detection carrier, further improving the detection efficiency of the surface density detection.

[0068] Continue to refer Figures 1 to 7 According to some embodiments of the present application, the mounting disk 101 has a hollow portion 11, the mounting disk 101 can be detachably embedded in the mounting hole 10, and the hollow portion 11 is connected to the mounting hole 10, and the detection sheet 20 covers the hollow portion 11.

[0069] When the surface density of the detection sheet 20 is tested, the portion of the detection sheet 20 corresponding to the hollow portion 11 can be exposed. The hollow portion 11 is connected to the mounting hole 10, so that the rotating tray 100 does not block the detection sheet 20 exposed by the hollow portion 11.

[0070] In some embodiments, along the vertical direction, the orthographic projection of the hollow portion 11 on the rotating tray 100 is located inside the mounting hole 10. That is, the hollow portion 11 is directly opposite to the mounting hole 10, and the cross-sectional area of ​​the hollow portion 11 is smaller than the cross-sectional area of ​​the mounting hole 10.

[0071] In some embodiments, the shape of the hollow portion 11 matches the shape of the mounting hole 10. For example, the shape of the mounting hole 10 can be any one of a circle, an ellipse or a polygon, and the shape of the hollow portion 11 can be any one of a circle, an ellipse or a polygon matching the shape of the mounting hole 10.

[0072] In other embodiments, the shape of the hollow portion 11 may not match the shape of the mounting hole 10 , that is, the shape of the mounting hole 10 is different from the shape of the hollow portion 11 , and it is only necessary that the hollow portion 11 is connected to the mounting hole 10 .

[0073] In order to conveniently replace the detection sheet 20 on the mounting plate 101, the mounting plate 101 needs to be removed from the rotating tray 100. The mounting plate 101 is detachably fixed to the inner wall of the mounting hole 10, so that the mounting plate 101 can be quickly removed.

[0074] refer to Figures 4 to 5 In some embodiments, the inner wall of the mounting hole 10 is provided with a mounting portion 10a protruding toward the center of the mounting hole 10, and the mounting portion 10a has a mounting surface, and the mounting surface is used to mount or carry the mounting plate 101. For example, the mounting plate 101 can be embedded in the mounting hole 10 by being placed on the mounting surface. When the mounting plate 101 is removed, the mounting plate 101 can be removed from the mounting surface, thereby realizing that the mounting plate 101 is detachably embedded in the mounting hole 10.

[0075] In some embodiments, the mounting portion 10a may extend along the circumference of the mounting hole 10 to form a closed ring.

[0076] In some embodiments, the mounting portion 10a may also include a plurality of sub-mounting portions arranged at intervals along the circumference of the mounting hole 10, and the plurality of sub-mounting portions are used together to support the mounting disk 101. For example, the mounting disk 101 is provided with a plurality of slots cooperating with the sub-mounting portions, so that the mounting disk 101 can be detachably installed by cooperating with the mounting portion 10a through the slots.

[0077] In some embodiments, the mounting plate 101 and the mounting hole 10 may also be detachably connected in other ways. For example, the inner wall of the mounting hole 10 has a first thread, and the outer wall of the mounting plate 101 has a second thread matching the first thread. By screwing the mounting plate 101 into the mounting hole 10, the detachable connection between the mounting plate 101 and the mounting hole 10 can be achieved.

[0078] The embodiment of the present application does not specifically limit the connection method between the mounting plate 101 and the mounting hole 10 , and only requires that the mounting plate 101 can be detachably embedded in the mounting hole 10 .

[0079] The hollow portion 11 can expose two opposite surfaces of the detection sheet 20 , which is beneficial to the penetration of the detection rays and reduces the interference of other components on the detection results.

[0080] Continue to refer Figures 1 to 7 According to some embodiments of the present application, the mounting plate 101 includes a bearing portion 101a and a pressing block 101b, the hollow portion 11 penetrates the bearing portion 101a and the pressing block 101b along the thickness direction, and the detection sheet 20 is sandwiched between the bearing portion 101a and the pressing block 101b.

[0081] The carrying portion 101a has a first carrying surface. The detection sheet 20 is located on the first carrying surface. The pressing block 101b is at least opposite to the first carrying surface so that the detection sheet 20 is sandwiched between the carrying portion 101a and the pressing block 101b.

[0082] Specifically, in some embodiments, the first bearing surface may extend along the circumference of the hollow portion 11 , so that the detection sheet 20 can cover the hollow portion 11 .

[0083] In some embodiments, the pressing block 101b may extend along the circumference of the hollow portion 11 to form a ring shape.

[0084] The bearing portion 101a has a first hollow cavity penetrating the bearing portion 101a along the thickness direction, and the pressing block 101b has a second hollow cavity penetrating the pressing block 101b along the thickness direction. The first hollow cavity is connected to the second hollow cavity, and together they constitute the hollow portion 11. In some embodiments, the cross-sectional shape and cross-sectional size of the first hollow cavity and the second hollow cavity are exactly the same.

[0085] The pressing block 101 b is detachably connected to the bearing portion 101 a , so that the detection piece 20 can be detachably mounted in the mounting plate 101 .

[0086] There may be many ways to detachably connect the pressing block 101b and the carrying portion 101a. The embodiment of the present application does not specifically limit the detachable connection method between the pressing block 101b and the carrying portion 101a, and it is only required that the pressing block 101b and the carrying portion 101a be detachably connected.

[0087] The pressing block 101b cooperates with the bearing portion 101a to detachably clamp the detection sheet 20, so that the detection sheet 20 can be replaced more easily and the detection efficiency can be improved.

[0088] Continue to refer Figures 1 to 7 According to some embodiments of the present application, the bearing portion 101a includes a step portion 1011 arranged along the circumference of the hollow portion 11, and the step portion 1011 is connected to the pressing block 101b in a magnetic manner to clamp the detection sheet 20.

[0089] The step portion 1011 is used to carry the detection sheet 20. The step portion 1011 and the pressing block 101b are attracted by magnetic attraction to clamp the detection sheet 20 between the step portion 1011 and the pressing block 101b without using other fasteners. When the detection sheet 20 is disassembled, the pressing block 101b can be removed from the step portion 1011.

[0090] In some embodiments, one of the step and the pressing block 101b has a magnetic element, and the material of the other of the step and the pressing block 101b includes at least one element of iron, nickel, and cobalt. The magnetic element is a magnet that can attract ferromagnetic materials and generate a magnetic field outside thereof, and the ferromagnetic materials include metals such as iron, nickel, and cobalt.

[0091] Specifically, in some embodiments, the magnetic element may be located in the step portion 1011 , and the pressing block 101 b and the step portion 1011 are attracted to each other by the magnetic attraction of the magnetic element.

[0092] In some other embodiments, the magnetic element may also be located inside the pressing block 101b.

[0093] In other embodiments, either the step or the pressing block 101b may be made of ferromagnetic material, that is, the step or the pressing block 101b itself is a ferromagnetic material. The material of the other one of the step and the pressing block 101b contains at least one element of iron, nickel, and cobalt.

[0094] In some embodiments, the step portion 1011 may extend along the circumference of the hollow portion 11 to form a ring shape.

[0095] In some embodiments, the step portion 1011 may also include a plurality of sub-step portions arranged at intervals along the circumference of the hollow portion 11 , and the detection sheet 20 may be pressed on one or more sub-step portions.

[0096] In some embodiments, the bearing portion 101a may further include: a housing 1012, and the step portion 1011 is fixed to the inner wall of the housing 1012. The housing 1012 may be arranged around the outer periphery of the step portion 1011 to support and protect the step portion 1011. The top surface of the step portion 1011 is lower than the top surface of the housing 1012, so that there is a height difference between the top surface of the step portion 1011 and the top surface of the housing 1012, so that the step portion 1011 forms a step shape compared to the housing 1012. In some embodiments, the step portion 1011 and the inner wall of the housing 1012 may be connected by welding.

[0097] refer to Figures 1 to 3 In some embodiments, the top surface of the housing 1012 has a recessed portion 15 that is recessed toward the bottom surface of the housing 1012, and the inner side wall of the mounting hole 10 is provided with a mounting hole groove 16 that is recessed away from the center of the mounting hole 10, and the mounting hole groove 16 extends along the thickness direction of the rotating tray 100 and crosses the mounting portion 10a in the mounting hole 10. When the mounting plate 101 is inserted into the mounting hole 10, the recessed portion 15 of the housing 1012 is opposite to the mounting hole groove 16 of the inner side wall of the mounting hole 10, and there is a gap between the housing 1012 and the mounting hole groove 16, so that it is convenient to remove the mounting plate 101 from the mounting hole 10 from the gap, and the recessed portion 15 can provide a fulcrum for the removal of the mounting plate 101, so that the mounting plate 101 can be easily removed from the mounting plate 101.

[0098] In some embodiments, the mounting hole groove 16 can be any one of a rectangular groove, an arc-shaped groove, or a fan-shaped groove.

[0099] In other embodiments, the step portion 1011 and the pressing block 101b may be detachably connected in other ways, for example, by pin connection or snap connection.

[0100] The magnetic connection can save the step of using other tools to assemble or disassemble the pressing block 101b and the step portion 1011, which is conducive to the rapid replacement of the detection piece 20 and improves the detection efficiency.

[0101] refer to Figures 1 to 3 ,as well as Fig. 9 According to some embodiments of the present application, the step portion 1011 includes a first annular portion 1011a and a second annular portion 1011b which are sequentially arranged in a direction away from the center of the hollow portion 11; the detection sheet 20 is mounted on the first annular portion 1011a, and a magnetic element is provided on the side of the second annular portion 1011b facing the pressing block 101b.

[0102] The top surface of the first annular portion 1011a serves as a second bearing surface for bearing the detection sheet 20. The pressing block 101b is opposite to the second bearing surface to clamp the detection sheet 20. The pressing block 101b is also opposite to the top surface of the second annular portion 1011b to be fixed by adsorption through a magnetic element. Here, the top surface of the first annular portion 1011a and the top surface of the second annular portion 1011b both refer to the side surface facing the pressing block 101b.

[0103] A magnetic element is disposed on one side of the second annular portion 1011b facing the pressing block 101b, that is, the magnetic element is disposed close to the top surface of the second annular portion 1011b.

[0104] In some embodiments, the magnetic element can be embedded in the second annular portion 1011b, and the magnetic element is not exposed on the top surface of the second annular portion 1011b. For example, the second annular portion 1011b is provided with a receiving groove, and the magnetic element, such as a magnet, can be arranged in the receiving groove and at a height lower than the height of the top surface of the second annular portion 1011b, so that the pressing block 101b is in indirect contact with the magnetic element.

[0105] In other embodiments, the magnetic element is embedded in the second annular portion 1011b, and the magnetic element may be exposed on the top surface of the second annular portion 1011b, so that the pressing block 101b can be in direct contact with the magnetic element.

[0106] In some embodiments, the top surface of the first annular portion 1011a and the top surface of the second annular portion 1011b may be flush. Thus, when the detection sheet 20 is located on the top surface of the first annular portion 1011a and the pressing block 101b contacts the detection sheet 20, there is a small gap between the pressing block 101b and the top surface of the second annular portion 1011b, and the small gap is configured not to affect the adsorption force of the magnetic element on the pressing block 101b.

[0107] In other embodiments, the bottom surface of the first annular portion 1011a is flush with the bottom surface of the second annular portion 1011b, and the height of the top surface of the first annular portion 1011a compared to the bottom surface of the first annular portion 1011a is lower than the height of the top surface of the second annular portion 1011b compared to the bottom surface of the first annular portion 1011a. In this way, when the detection sheet 20 is located on the top surface of the first annular portion 1011a and the pressing block 101b contacts the detection sheet 20, the distance between the pressing block 101b and the second annular portion 1011b is small, or even zero, to ensure that the magnetic element has a strong adsorption force on the pressing block 101b.

[0108] It is understandable that the distance between the top surface of the first annular portion 1011a and the top surface of the second annular portion 1011b depends on the thickness of the detection sheet 20. Therefore, the distance between the top surface of the first annular portion 1011a and the top surface of the second annular portion 1011b can be adjusted based on the thickness of the detection sheet 20. Specifically, it is required to meet the requirement that when the pressing block 101b contacts the detection sheet 20, the distance between the top surface of the first annular portion 1011a and the top surface of the second annular portion 1011b is 0, or the distance between the top surface of the first annular portion 1011a and the top surface of the second annular portion 1011b does not affect the adsorption force of the magnetic element on the pressing block 101b. Alternatively, it is required to meet the requirement that when the pressing block 101b contacts the top surface of the second annular portion 1011b, the pressing block 101b can contact the detection sheet 20 located on the first annular portion 1011a at the same time, thereby ensuring a better clamping effect on the detection sheet 20.

[0109] It is understandable that in other embodiments, the magnetic element may be located both in the first annular portion 1011a and in the second annular portion 1011b, that is, the magnetic element spans the boundary between the first annular portion 1011a and the second annular portion 1011b.

[0110] The first annular portion 1011a and the second annular portion 1011b are provided to carry the detection sheet 20 and the magnetic element respectively, so as to provide bearing for the detection sheet 20 and enable the pressing block 101b to maintain sufficient magnetic attraction with the magnetic element, thereby improving the reliability of clamping the detection sheet 20.

[0111] According to some embodiments of the present application, the second annular portion 1011 b includes a plurality of inner recesses 12 spaced apart along the circumferential direction, and the magnetic element includes a plurality of magnets respectively disposed in the plurality of inner recesses 12 .

[0112] The inner recess 12 extends from the top surface of the second annular portion 1011b to the bottom surface of the second annular portion 1011b, and does not penetrate the second annular portion 1011b in the thickness direction, so that the inner recess 12 is a closed structure toward the bottom of the second annular portion 1011b, which can provide support for the magnet.

[0113] In some embodiments, the inner recess 12 has a top opening on one side close to the top surface of the second annular portion 1011b, and a magnet is disposed in each inner recess 12, and the magnet is embedded in the inner recess 12 from the top opening of the inner recess 12. The top opening of the inner recess 12 exposes the magnet, so that the pressing block 101b can directly contact the magnet, thereby strengthening the adsorption force of the magnet on the pressing block 101b.

[0114] In some embodiments, multiple recessed portions 12 are arranged at equal intervals along the circumference of the second annular portion 1011b, so that multiple magnets are arranged at equal intervals along the circumference of the second annular portion 1011b, thereby causing the pressing block 101b to be subjected to a balanced magnetic attraction force in the circumferential direction, which is beneficial to maintaining a relatively stable connection between the pressing block 101b and the second annular portion 1011b, thereby ensuring the clamping effect of the pressing block 101b and the second annular portion 1011b on the detection sheet 20.

[0115] In some embodiments, the number of the plurality of recesses 12 in the second annular portion 1011b may be 2, 3, 4 or more. The present embodiment does not specifically limit the number of the recesses 12 in the second annular portion 1011b, and the number of the recesses 12 may be adjusted according to different requirements.

[0116] The magnets are arranged at intervals along the circumference of the second annular portion 1011b, thereby generating multiple magnetic attraction forces on the pressing block 101b in the circumferential direction of the pressing block 101b, so that the pressing block 101b and the second annular portion 1011b are uniformly adsorbed along the circumferential direction, thereby increasing the clamping force on the detection sheet 20.

[0117] refer to Figures 1 to 3 According to some embodiments of the present application, one of the mounting disk 101 and the mounting hole 10 has a positioning protrusion 13, and the other of the mounting disk 101 and the mounting hole 10 has a positioning groove 14 adapted to the positioning protrusion 13, and the cooperation between the positioning protrusion 13 and the positioning groove 14 is used to limit the mounting disk 101 along the circumference of the mounting hole 10.

[0118] When the mounting plate 101 is inserted into the mounting hole 10, the positioning protrusion 13 can be inserted into the positioning groove 14 to prevent the mounting plate 101 from rotating in the circumferential direction of the mounting hole 10. When the positioning protrusion 13 is inserted into the positioning groove 14, the positioning protrusion 13 is in close contact with the inner side wall of the positioning groove 14 to prevent the positioning protrusion 13 from moving in the groove.

[0119] In some embodiments, the positioning groove 14 may be any one of a rectangular groove, an arc-shaped groove, or a fan-shaped groove, and the shape of the positioning protrusion 13 may match the shape of the positioning groove 14 .

[0120] In some embodiments, the outer side wall of the mounting plate 101 is provided with a positioning protrusion 13 protruding away from the center of the mounting plate 101 , and the inner side wall of the mounting hole 10 is provided with a positioning groove 14 recessed away from the center of the mounting hole 10 .

[0121] In some embodiments, when the inner wall of the mounting hole 10 further has a mounting hole groove 16 , the positioning groove 14 and the mounting hole groove 16 may be arranged opposite to each other, that is, respectively located on two sides of the center of the mounting hole 10 .

[0122] In some embodiments, the outer wall of the mounting plate 101 is provided with a positioning groove 14 that is recessed toward the center of the mounting plate 101 , and the inner wall of the mounting hole 10 is provided with a positioning protrusion 13 that protrudes toward the center of the mounting hole 10 .

[0123] In some embodiments, when the inner wall of the mounting hole 10 further has a mounting hole groove 16 , the positioning protrusion 13 and the mounting hole groove 16 may be arranged opposite to each other, that is, respectively located on two sides of the center of the mounting hole 10 .

[0124] In some embodiments, in order to further improve the measurement accuracy, the surface density test can be performed multiple times on the detection sheet 20 on the same installation disk 101, and the position of the detection sheet 20 can be kept consistent each time it is transferred to the detection station. By setting the positioning protrusion 13 and the positioning groove 14 to cooperate with each other, the consistency of the position of the installation disk 101 during multiple installations can also be ensured.

[0125] It is understandable that in other embodiments, multiple groups of positioning protrusions 13 and positioning grooves 14 can be arranged at equal intervals, so that multiple surface density tests can be performed on different positions of the same detection sheet 20, for example, adjusting the installation angle of the mounting plate 101 and the mounting hole 10 between two tests.

[0126] Based on this, the embodiment of the present application is provided with a positioning protrusion 13 and a positioning groove 14, which can not only provide circumferential limitation for the mounting plate 101 and the mounting hole 10 to achieve a more reliable position connection, but also accurately locate the installation position, thereby better meeting the detection requirements.

[0127] refer to Figures 8 to 10 , Figure 8 Schematic diagram of the exploded structure of the detection carrier of other embodiments of the present application; Fig. 9 Schematic diagram of the top view structure of the detection carrier of other embodiments of the present application; Fig.10 for Fig. 9 Cross-sectional view along the CC direction.

[0128] According to some embodiments of the present application, the detection carrier 1 further includes a rotation limiting structure 103, which is used to limit the rotation angle of the rotating tray 100 so that the detection sheets 20 in the multiple mounting plates 101 on the rotating tray 100 can be detected in sequence.

[0129] Each time the rotating tray 100 rotates by a preset angle, one of the mounting plates 101 on the rotating tray 100 is transferred to the detection station, and the detection sheet 20 in the mounting plate 101 at the detection station is detected.

[0130] The rotation limiting structure 103 is used to control the rotation tray 100 to stop rotating each time the rotation tray 100 rotates a preset angle, so that the installation disk 101 stays at the detection station, which is convenient for detecting the detection sheet 20 in the installation disk 101. It can be understood that after the detection of the current detection sheet 20 located at the detection station is completed, the rotation limiting structure 103 cancels the limit, and the driving component 102 drives the rotation tray 100 to continue rotating, so that the installation disk 101 loaded with the current detection sheet 20 is moved out of the detection station and the next installation disk 101 is rotated to the detection station.

[0131] In some embodiments, the action of the rotation limiting structure 103 can be pre-programmed so that each time the rotating tray 100 rotates a preset angle, when the mounting plate 101 rotates to the detection station, the rotation limiting structure 103 limits the rotating tray 100. After the detection of the detection sheet 20 at the detection station is completed, the rotation limiting structure 103 stops limiting the rotating tray 100, so that the rotating tray 100 continues to rotate.

[0132] For example, the interval between two consecutive limiting actions of the rotating tray 100 by the rotating limiting structure 103 is set based on the rotation speed and the preset rotation angle of the rotating tray 100. The duration of limiting the rotating tray 100 by the rotating limiting structure 103 is controlled based on the detection time of the detection sheet 20.

[0133] In some embodiments, the plurality of mounting plates 101 are arranged at equal intervals along the circumference of the rotating tray 100, and the rotation limiting structure 103 controls the rotating tray 100 to stop rotating each time the rotating tray 100 rotates the same preset angle, that is, the interval between any two consecutive limiting actions of the rotating tray 100 by the rotation limiting structure 103 is the same.

[0134] In other embodiments, the plurality of mounting disks 101 are not arranged at equal intervals along the circumference of the rotating tray 100. In this case, the time interval between two consecutive limiting actions of the rotating tray 100 by the rotating limiting structure 103 can be set based on the rotation angle required when each two adjacent mounting disks 101 rotate to the detection station.

[0135] Since the rotation angle of the rotating tray 100 is limited by the rotation limiting structure 103, the rotating tray 100 can accurately move multiple mounting plates 101 to designated inspection positions during rotation, thereby reducing position deviation caused by transmission and improving the accuracy of the inspection results.

[0136] refer to Figures 8 to 10According to some embodiments of the present application, the rotation limiting structure 103 includes: a plurality of limiting grooves 103a arranged on the side surface of the rotating tray 100, the plurality of limiting grooves 103a corresponding one-to-one to the plurality of mounting plates 101; and a locking portion 103b, which is used to lock into the corresponding limiting groove 103a when the rotating tray 100 rotates to a preset angle, so as to limit the rotating tray 100.

[0137] That is to say, the number of the limiting grooves 103 a corresponds to the number of the mounting plates 101 , so that each limiting groove 103 a limits the corresponding mounting plate 101 .

[0138] In some embodiments, the limiting groove 103a is arranged opposite to the mounting hole 10, that is, the orthographic projection of the limiting groove 103a on the side surface of the rotating tray 100 is located within the orthographic projection of the mounting hole 10 on the side surface of the rotating tray 100. For example, the limiting groove 103a can be arranged on the extension line of the line connecting the center of the rotating tray 100 and the center of the mounting hole 10.

[0139] In other embodiments, the limiting groove 103a may also correspond to the gap between two adjacent mounting holes 10. That is, the orthographic projection of the limiting groove 103a on the side surface of the rotating tray 100 is staggered with the orthographic projection of the mounting hole 10 on the side surface of the rotating tray 100.

[0140] When the locking portion 103b is locked into the limiting groove 103a, it is in close contact with the side wall of the limiting groove 103a, preventing the locking portion 103b from moving circumferentially in the limiting groove 103a, thereby ensuring the accuracy of the rotation limiting structure 103 in limiting the rotating tray 100.

[0141] In some embodiments, the limiting groove 103a may be any one of a rectangular groove, an arc-shaped groove or a fan-shaped groove, and the shape of the locking portion 103b matches the shape of the limiting groove 103a.

[0142] In some embodiments, the rotation limiting structure 103 further includes a limiting control unit 103c, which is used to control the stopper 103b to extend and snap into the corresponding limiting groove 103a when the rotating tray 100 rotates a preset angle. The limiting control unit 103c is also used to control the stopper 103b to move away from the limiting groove 103a after completing the detection of the detection sheet 20, so that the rotating tray 100 can continue to rotate.

[0143] In some embodiments, the control method of the position limiting control unit 103c can be set in advance. Specifically, the rotation time required for the rotating tray 100 to rotate the preset angle can be obtained based on the rotation speed of the rotating tray 100, and based on this, the time interval between two consecutive times when the position limiting control unit 103c controls the stopper 103b to extend can be set. And the duration of the position limiting control unit 103c controlling the stopper 103b to extend can be set based on the detection time of the detection sheet 20.

[0144] In some embodiments, the rotation limiting structure 103 may be a spring pin positioning structure, which may include: a positioning pin, a spring and a driver. The locking portion 103b may be a positioning pin, and the limiting control unit 103c may be a driver in the spring pin positioning structure.

[0145] The positioning pin may be composed of a cylindrical entity with a raised head. One end of the positioning pin is connected to a spring, and a driver is used to control the expansion and contraction of the spring. The elastic deformation and elastic force of the spring are used to realize the positioning pin limiting the rotating tray 100.

[0146] When the rotating tray 100 rotates to a preset angle, the driver controls the spring to eject the positioning pin so that the positioning pin is embedded in the positioning groove 14. When the detection of the detection sheet 20 is completed, the driver controls the spring to contract, thereby removing the positioning pin from the positioning groove 14.

[0147] The limiting groove 103 a and the locking portion 103 b constitute a mechanical limit for the rotating tray 100 . In other embodiments, the rotating limiting structure 103 may also be other limiting structures other than the spring pin positioning structure that can limit the rotating tray 100 .

[0148] In other embodiments, the rotation limiting structure 103 may not be a mechanical limiting structure. For example, the rotation limiting structure 103 may be a drive control unit, which is used to control the drive component 102 to stop driving the rotating tray 100 to rotate when driving the rotating tray 100 to rotate by a preset angle, thereby limiting the rotating tray 100. The drive control unit may be directly combined with the drive component 102, for example, the drive component 102 may simultaneously drive the rotating tray 100 to rotate, and keep the rotating tray 100 stationary after rotating by a preset angle.

[0149] The mechanical limiting structure is simple in structure and is helpful to improve the reliability of the rotation limiting structure 103 limiting the rotating tray 100, thereby improving the accuracy of the detection result and the detection efficiency.

[0150] According to some embodiments of the present application, multiple mounting holes 10 on the rotating tray 100 are arranged at equal intervals around the rotation center of the rotating tray 100 ; multiple limiting grooves 103a are arranged at equal intervals around the rotation center of the rotating tray 100 .

[0151] That is to say, each time the rotating tray 100 rotates the same preset angle, the plurality of mounting plates 101 can be rotated to the inspection station in sequence.

[0152] The rotation limiting structure 103 limits the rotation tray 100 each time the rotation tray 100 rotates the same preset angle, so that the time interval between any two consecutive limiting actions of the rotation limiting structure 103 on the rotation tray 100 is consistent, which can simplify the program setting of the rotation limiting structure 103.

[0153] In other embodiments, the plurality of mounting holes 10 on the rotating tray 100 are not arranged at equal intervals in the circumferential direction around the rotation center of the rotating tray 100, and the plurality of limiting grooves 103a are also not arranged at equal intervals in the axial direction around the rotation center of the rotating tray 100. The spacing between the plurality of limiting grooves 103a depends on the spacing between the plurality of mounting holes 10, so that each limiting groove 103a is used to limit the corresponding mounting plate 101.

[0154] The rotation limiting structure 103 limits the rotation tray 100 each time the rotation tray 100 rotates the same preset angle, which is beneficial to improving the accuracy of the rotation limiting structure 103 limiting the rotation tray 100 and simplifying the control of the rotation limiting structure.

[0155] refer to Figures 8 to 10 According to some embodiments of the present application, the detection carrier 1 also includes a substrate 104 carrying the rotating tray 100 and the driving component 102, the substrate 104 has a support shaft 104a, the rotating tray 100 is detachably arranged on the support shaft 104a, the substrate 104 is provided with a first through hole 104b, and the rotating tray 100 is configured to rotate around the support shaft 104a so that the multiple mounting holes 10 are sequentially connected with the first through hole 104b in the vertical direction.

[0156] In some embodiments, when the rotating tray 100 rotates until the mounting plate 101 is located at the detection station, the first through hole 104b is connected to the mounting hole 10. In some embodiments, the mounting plate 101 has a hollow portion 11, and the hollow portion 11 is connected to the mounting hole 10, so that when the mounting plate 101 is located at the detection station, the two opposite surfaces of the detection sheet 20 can be exposed, which facilitates the surface density detection of the detection sheet 20.

[0157] In some embodiments, the shape of the first through hole 104b may match the shape of the mounting hole 10. For example, the shape of the mounting hole 10 may be any one of a circle, an ellipse or a polygon, and the shape of the first through hole 104b may also be any one of a circle, an ellipse or a polygon.

[0158] In some embodiments, the shape of the first through hole 104b is the same as that of the mounting hole 10, and the orthographic projection of the mounting hole 10 on the substrate 104 is located within the first through hole 104b, so that the first through hole 104b can completely expose the surface of the mounting plate 101 located in the mounting hole 10.

[0159] In some embodiments, the size of the first through hole 104b may be the same as that of the mounting hole 10. In other embodiments, the size of the first through hole 104b may be different from that of the mounting hole 10, as long as the first through hole 104b can expose the mounting plate 101 in the mounting hole 10.

[0160] In some embodiments, the mounting plate 101 has a hollow portion 11 , and the detection sheet 20 covers the hollow portion 11 , and the shape of the first through hole 104 b may match the shape of the hollow portion 11 .

[0161] In some embodiments, the orthographic projection of the hollow portion 11 on the substrate 104 is located within the first through hole 104 b , so that the first through hole 104 b can completely expose two opposite surfaces of the detection sheet 20 .

[0162] In some embodiments, the shape of the first through hole 104b may be different from that of the hollow portion 11 , and the size of the first through hole 104b may be different from that of the hollow portion 11 . It is only necessary that the first through hole 104b can expose the detection sheet 20 in the hollow portion 11 .

[0163] The driving component 102 is fixed on the base plate 104 and is in driving connection with the rotating tray 100 for driving the rotating tray 100 to rotate around the supporting shaft 104 a.

[0164] The driving component 102 may be any rotation driving structure known to those skilled in the art that can drive the rotating tray 100 to rotate. The embodiment of the present application does not describe the structure of the driving component 102 in detail.

[0165] In some embodiments, the detection carrier 1 further includes a rotation limiting structure 103 , and the rotation limiting structure 103 may also be fixed on the substrate 104 .

[0166] In some embodiments, the rotation limiting structure 103 and the driving component 102 may be located on opposite sides of the rotating tray 100 .

[0167] The substrate 104 can provide a mounting base for the rotating tray 101 and facilitate the installation and arrangement of other components. Meanwhile, a first through hole 104b is provided on the substrate 104 to directly expose the detection sheet 20 on the mounting plate 101 during detection, thereby reducing interference of other components with the detection rays and improving the accuracy of the detection results.

[0168] refer to Figure 8 According to some embodiments of the present application, the detection carrier 1 also includes a dust cover 105, which is arranged on a side of the plurality of mounting plates 101 away from the substrate 104, and the dust cover 105 is provided with a second through hole 105a, which is arranged vertically opposite to the first through hole 104b.

[0169] The position of the dust cover 105 except the second through hole 105a can cover the rotating tray 100, protect the mounting plate 101 on the rotating tray 100, reduce the adsorption of dust on the detection sheet 20, and also reduce the impact of the environment on the detection sheet 20. For example, the impact of changes in air pressure or temperature on the surface density detection of the detection sheet 20 is reduced to ensure the reliability of the detection result.

[0170] A second through hole 105a is provided in the dust cover 105 and is connected to the first through hole 104b, so that when the mounting disk 101 is rotated to the detection station, the first through hole 104b is connected to the second through hole 105a, thereby exposing two opposite surfaces of the mounting disk 101 in the thickness direction of the rotating tray 100, without affecting the normal detection of the detection sheet 20 in the mounting disk 101.

[0171] In some embodiments, the shape of the second through hole 105a can match the shape of the first through hole 104b. For example, the shape of the first through hole 104b can be any one of a circle, an ellipse or a polygon, and the shape of the second through hole 105a can also be any one of a circle, an ellipse or a polygon.

[0172] In some embodiments, the second through hole 105 a and the first through hole 104 b may have the same size and shape or may have different sizes and shapes.

[0173] In some embodiments, the mounting plate 101 has a hollow portion 11 , and the detection sheet 20 covers the hollow portion 11 , and the shape of the second through hole 105 a may match the shape of the hollow portion 11 .

[0174] In some embodiments, the orthographic projection of the hollow portion 11 on the substrate 104 is located within the orthographic projection of the second through hole 105 a on the substrate 104 , so that the second through hole 105 a can completely expose one surface of the detection sheet 20 .

[0175] In some embodiments, the shape of the second through hole 105a may be different from that of the hollow portion 11 , and the size of the second through hole 105a may be different from that of the hollow portion 11 . It is only necessary that the second through hole 105a can expose the surface of the detection sheet 20 in the hollow portion 11 .

[0176] In some embodiments, the dust cover 105 may be made of a transparent material, thereby facilitating observation of the condition of the mounting plate 101 within the dust cover 105 .

[0177] The dust cover 105 can protect the detection sheet 20 and reduce the influence of the surface density meter on the measurement accuracy of the detection sheet 20 caused by environmental changes. The second through hole 105a is connected to the first through hole 104b in the vertical direction, and can expose the surface of the detection sheet 20 to be detected so as to detect the detection sheet 20.

[0178] The embodiment of the present application further provides a calibration device for calibrating an area density meter, which includes the detection carrier 1 in the above embodiment, and the detection sheet 20 carried by the detection carrier 1 is a calibration sheet for calibrating the area density meter.

[0179] The purpose of calibration is to find the correlation between the measured value of the measuring equipment and the surface density of the pole piece, and to correct the surface density measured by the surface density meter through the calibration results, so as to reduce the measurement error of the surface density meter during the measurement process.

[0180] In some embodiments, the calibration sheet can be a standard sheet without coating on both sides, and the material of the standard sheet can be metal foil. In other embodiments, the calibration sheet can also be cut from qualified pole pieces to obtain multiple calibration sheets.

[0181] In some embodiments, a group of calibration patches simultaneously mounted in a detection carrier may be a plurality of calibration patches whose surface density values ​​vary in a step-like manner.

[0182] The calibration sheet can be detachably installed in the installation tray, which is conducive to the rapid installation and removal of the calibration sheet. The driving component 102 drives the rotating tray to rotate, so that the surface density meter detects each calibration sheet on the rotating tray in turn, and completes the detection of a group of calibration sheets. Since the rapid installation and removal of the calibration sheet is realized, when the surface density meter detects multiple groups of detection sheets 20 and calibrates the surface density meter, the time for replacing different groups of calibration sheets on the detection carrier can be shortened, thereby improving the calibration efficiency.

[0183] The embodiment of the present application also provides an area density meter, including the detection carrier 1 in the above embodiment.

[0184] In the step of calibrating the area density meter, it is necessary to use the area density meter to detect the machine-measured area density of the calibration piece, and obtain the calibration result based on the machine-measured area density of the calibration piece and the actual piece density.

[0185] When detecting the surface density of the pole piece, it is also necessary to use a surface density meter to detect the machine-measured surface density of the pole piece, compensate the machine-measured surface density based on the calibration result, and obtain the surface density of the pole piece.

[0186] Whether in the step of calibrating the surface density meter or in the step of using the surface density meter to detect the surface density of the pole piece, it is necessary to move the pole piece or calibration piece between the radiation source and the detector of the surface density meter, and the radiation emitted by the radiation source passes through the pole piece / calibration piece to the detector. By obtaining the intensity of the radiation received by the detector and comparing it with the intensity before the radiation passes through the pole piece / calibration piece to be tested, the machine-measured surface density of the pole piece / calibration piece to be tested is calculated. Therefore, the same detection carrier can be used to install the calibration piece or the pole piece to be tested to realize the detection of the machine-measured surface density of the pole piece / calibration piece to be tested.

[0187] After calibration is completed, the calibration piece on the detection carrier is replaced with the pole piece to be tested, or when the detection of the previous set of pole pieces to be tested is completed and the next set of pole pieces to be tested is replaced, since the pole pieces to be tested or the calibration piece can be detachably installed in the mounting plate, the pole pieces to be tested / calibration pieces can be quickly installed and disassembled, which can shorten the time for replacing different pole pieces to be tested / calibration pieces on the detection carrier, thereby improving the detection efficiency of surface density detection.

[0188] refer to Figures 11 to 13 , Fig.11 A schematic diagram of the three-dimensional structure of an areal density meter according to some embodiments of the present application; Fig.12 This is a schematic diagram of the main structure of the surface density meter of some embodiments of the present application; Fig.13 This is a structural block diagram of an areal density meter according to some embodiments of the present application.

[0189] An embodiment of the present application also provides a surface density meter, including a radiation detection device, the radiation detection device includes a radiation source 30 and a detector 31 arranged at intervals, and the calibration device in the above embodiment, the calibration device is constructed to move the calibration plates in multiple mounting plates 101 in sequence between the radiation source 30 and the detector 31.

[0190] During the calibration process, the driving component 102 of the detection carrier 1 drives the rotating tray 100 to rotate, and moves the mounting plate 101 on the rotating tray 100 to between the radiation source 30 and the detector 31 in turn, so that the calibration piece installed in the mounting plate 101 rotates to the detection area between the radiation source 30 and the detector 31 in turn.

[0191] Only one mounting disk 101 is rotated to be between the ray source 30 and the detector 31 , and the remaining mounting disks 101 are located outside the detection area between the ray source 30 and the detector 31 .

[0192] In some embodiments, the surface density meter may include a base 106 and a support frame 107 fixed on the base 106. The calibration device is connected to the base 106, and the radiation detection device is connected to the support frame 107.

[0193] In some embodiments, before calibration, any mounting disk 101 on the rotating tray 100 can be inserted into the gap between the radiation source 30 and the detector 31. Since multiple mounting disks 101 are arranged along the circumference of the rotating tray 100, the remaining mounting disks 101 can be sequentially moved into the gap between the radiation source 30 and the detector 31 by only driving the rotating tray 100 to rotate.

[0194] In some embodiments, the radiation detection device can be moved relative to the calibration device until any mounting plate 101 on the rotating tray 100 is located in the gap between the radiation source 30 and the detector 31 .

[0195] Specifically, in some embodiments, the support frame 107 may include two columns 107a and a beam 107b fixed between the two columns 107a. The radiation detection device is slidably connected to the beam 107b, and the calibration device is fixed on the base 106 and disposed near one end of the beam 107b.

[0196] In some embodiments, the calibration device may include a carrier frame 108 , which is mounted on the base 106 , and the detection fixture is fixed on the carrier frame 108 .

[0197] The radiation detection device can move relative to the beam 107b in the extension direction of the beam 107b, and then move to the vicinity of the calibration device, and then drive the rotating tray 100 to rotate, so that the mounting plate 101 on the rotating tray 100 moves to the detection area between the radiation source 30 and the detector 31.

[0198] Specifically, in some embodiments, the base 106 may be equipped with a slide rail and a slider. The slider is slidable compared to the slide rail, and the slide rail extends in the same direction as the crossbeam 107b. The support frame 108 is connected to the slider. When the slider moves on the slide rail, it drives the support frame 108 to slide, thereby driving the detection fixture to slide. The slider can be driven to move on the slide rail by a motor or a cylinder.

[0199] When the mounting plate 101 is located in the gap between the radiation source 30 and the detector 31, the radiation source 30 emits radiation to the detector 31 so that the radiation penetrates the calibration plate placed on the mounting plate 101 and reaches the detector 31. The detector 31 is used to receive the radiation and generate a voltage signal based on the intensity of the radiation.

[0200] In some embodiments, the radiation emitted by the radiation source 30 may be x-ray or β-ray.

[0201] In some embodiments, the areal density meter may further include a controller 109, and the controller 109 is configured to receive a voltage signal and determine the detection areal density of the calibration piece based on the voltage signal.

[0202] Specifically, in some embodiments, the controller 109 may include: a weighing unit 1091, a thickness gauge control unit 1092, and a correction control unit 1093. The weighing unit 1091 is used to weigh the calibration sheet to obtain the actual surface density of the calibration sheet. The surface density meter is used to measure the calibration sheet to obtain the machine-measured surface density of the calibration sheet. The correction control unit 1093 is respectively connected to the weighing unit 1091 and the surface density meter, so that after the weighing unit 1091 weighs the calibration sheet, the actual surface density and the machine-measured surface density can be fed back to the correction control unit 1093. The correction control unit 1093 is used to receive the actual surface density and the machine-measured surface density sent by the weighing unit 1091, and obtain the linear offset of the surface density meter according to the deviation between the standard weight and the surface density to achieve calibration.

[0203] The thickness gauge control unit 1092 is connected to the detector 31 and can be used to determine the surface density of the pole piece based on the voltage signal and linear offset output by the detector 31 .

[0204] In some embodiments, the weighing unit 1091 may be an electronic scale, an electronic weighing device, etc. The calibration control unit 1093 may be a manufacturing execution system (MES), a central processing unit or other controllers, etc.

[0205] In some embodiments, the controller 109 may further include: a display screen 1094, which may be used to display the machine-measured surface density of the calibration piece, or to display the actually measured surface density of the calibration piece.

[0206] In some embodiments, the controller 109 may further include: a communication interface 1095 , and the correction control unit 1093 may be connected to the weighing unit 1091 through the communication interface 1095 , and may also be connected to the thickness gauge control unit 1092 through the communication interface 1095 .

[0207] This embodiment uses the above-mentioned calibration device to calibrate the area density meter, which can shorten the time for replacing the calibration sheet on the detection carrier 1 and improve the calibration efficiency of the area density meter.

[0208] The present application also provides an area density meter, referring to Figures 1 to 13 The surface density meter includes a radiation detection device, which includes a radiation source 30 and a detector 31 that are arranged at intervals, and a detection carrier 1.

[0209] The detection carrier 1 includes a rotating tray 100, a mounting plate 101 and a driving component 102. The rotating tray 100 is provided with a plurality of mounting holes 10 along the circumference. The plurality of mounting plates 101 are connected to the rotating tray 100 through the mounting holes 10. The mounting plate 101 is used to detachably mount a detection sheet 20 for surface density detection. The driving component 102 is in transmission connection with the rotating tray 100 to drive the rotating tray 100 to rotate. The detection sheet 20 carried by the detection carrier 1 is a calibration sheet for calibrating the surface density meter, and can also be a pole piece to be tested directly for detecting the surface density.

[0210] The calibration plates in the multiple mounting plates 101 on the detection carrier 1 are moved sequentially to between the radiation source 30 and the detector 31 .

[0211] The radiation source 30 may emit x-rays or beta-rays. When the mounting plate 101 is located in the gap between the radiation source 30 and the detector 31, the radiation source 30 emits radiation to the detector 31, so that the radiation penetrates the calibration sheet placed on the mounting plate 101 and reaches the detector 31. The detector 31 is used to receive the radiation and generate a voltage signal based on the intensity of the radiation.

[0212] The areal density meter may further include a controller 109, and the controller 109 is used to receive a voltage signal and determine the detection areal density of the calibration piece based on the voltage signal.

[0213] The controller 109 is also used to: use the machine-measured surface density of the calibration piece as the independent variable and the actual surface density of the calibration piece as the dependent variable, perform linear fitting on the machine-measured surface density and the actual surface density of the calibration piece, obtain the linear relationship between the machine-measured surface density and the actual surface density, and store the linear relationship in the surface density meter to complete the calibration of the surface density meter.

[0214] The mounting plate 101 on the detection carrier 1 has a hollow portion 11 . The mounting plate 101 is detachably embedded in the mounting hole 10 . The hollow portion 11 is communicated with the mounting hole 10 . The detection sheet 20 covers the hollow portion 11 .

[0215] The mounting plate 101 includes a step portion 1011 arranged along the circumference of the hollow portion 11, and the step portion 1011 includes a first annular portion 1011a and a second annular portion 1011b arranged in sequence in a direction away from the center of the hollow portion 11. The detection sheet 20 is mounted on the first annular portion 1011a, the second annular portion 1011b is provided with a magnetic element, and the pressing block 101b is mounted on the second annular portion 1011b, wherein the magnetic element is arranged on the side of the second annular portion 1011b facing the pressing block 101b. The magnetic element connects the pressing block 101b and the second annular portion 1011b in a magnetic attraction manner.

[0216] The second annular portion 1011 b includes a plurality of inner recesses 12 spaced apart in the circumferential direction, and the magnetic element includes a plurality of neodymium magnets respectively disposed in the plurality of inner recesses 12 .

[0217] The inner wall of the mounting hole 10 has a positioning protrusion 13 , and the outer wall of the mounting plate 101 has a positioning groove 14 adapted to the positioning protrusion 13 . The positioning protrusion 13 and the positioning groove 14 cooperate to limit the mounting plate 101 along the circumference of the mounting hole 10 .

[0218] The detection carrier 1 also includes a rotation limiting structure 103, which includes a plurality of limiting grooves 103a and a locking portion 103b arranged on the side surface of the rotating tray 100, and the plurality of limiting grooves 103a correspond to the plurality of mounting plates 101 one by one; the locking portion 103b is used to be locked into the corresponding limiting groove 103a when the rotating tray 100 rotates by a preset angle, so as to limit the rotating tray 100. The plurality of mounting holes 10 on the rotating tray 100 are arranged at equal intervals in the circumferential direction around the rotation center of the rotating tray 100; the plurality of limiting grooves 103a are arranged at equal intervals in the circumferential direction around the rotation center of the rotating tray 100.

[0219] The detection carrier 1 also includes a substrate 104 that carries the rotating tray 100 and the driving component 102. The substrate 104 has a support shaft 104a. The rotating tray 100 is detachably arranged on the support shaft 104a. The substrate 104 is provided with a first through hole 104b. The rotating tray 100 is configured to rotate around the support shaft 104a so that the plurality of mounting holes 10 are sequentially connected with the first through hole 104b in the vertical direction. The detection carrier 1 also includes a dust cover 105. The dust cover 105 is provided on a side of the plurality of mounting plates 101 away from the substrate 104. The dust cover 105 is provided with a second through hole 105a. The second through hole 105a is arranged opposite to the first through hole 104b in the vertical direction.

[0220] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A detection vehicle, characterized in that: include: A rotating tray, wherein the rotating tray is provided with a plurality of mounting holes along the circumference, A plurality of mounting plates, wherein the mounting plates are connected to the rotating tray through the mounting holes, and the mounting plates are used to detachably mount detection sheets for surface density detection; A driving component is drivingly connected to the rotating tray to drive the rotating tray to rotate.

2. The detection carrier according to claim 1, characterized in that: The installation plate has a hollow portion, the installation plate is detachably embedded in the installation hole, and the hollow portion is communicated with the installation hole, and the detection sheet covers the hollow portion.

3. The detection carrier according to claim 2, characterized in that: The mounting plate comprises a bearing portion and a pressing block, the hollow portion penetrates the bearing portion and the pressing block along a thickness direction, and the detection sheet is sandwiched between the bearing portion and the pressing block.

4. The detection carrier according to claim 3, characterized in that: The bearing portion includes a step portion arranged along the circumference of the hollow portion, and the step portion is connected to the pressing block in a magnetic attraction manner to clamp the detection sheet.

5. The detection carrier according to claim 4, characterized in that: The step portion includes a first annular portion and a second annular portion sequentially arranged in a direction away from the center of the hollow portion; The detection piece is mounted on the first annular portion, and a magnetic element is provided on a side of the second annular portion facing the pressing block.

6. The detection carrier according to claim 5, characterized in that: The second annular portion includes a plurality of inner recesses arranged at intervals along the circumferential direction, and the magnetic element includes a plurality of magnets respectively arranged in the plurality of inner recesses.

7. The detection carrier according to any one of claims 2 to 6, characterized in that: One of the mounting plate and the mounting hole has a positioning protrusion, and the other of the mounting plate and the mounting hole has a positioning groove adapted to the positioning protrusion. The positioning protrusion and the positioning groove cooperate to limit the mounting plate along the circumference of the mounting hole.

8. The detection carrier according to any one of claims 1 to 7, characterized in that: Also includes: The rotation limiting structure is used to limit the rotation angle of the rotating tray so that the detection pieces in the multiple mounting plates on the rotating tray can be detected in sequence.

9. The detection carrier according to claim 8, characterized in that: The rotation limiting structure comprises: A plurality of limiting grooves are provided on the side surface of the rotating tray, and the plurality of limiting grooves correspond to the plurality of mounting plates one by one; and The locking portion is used to lock into the corresponding limiting groove when the rotating tray rotates to a preset angle, so as to limit the rotating tray.

10. The detection carrier according to claim 9, characterized in that: The plurality of mounting holes on the rotating tray are arranged at equal intervals in the circumferential direction around the rotation center of the rotating tray; The plurality of limiting grooves are arranged at equal intervals in the circumferential direction around the rotation center of the rotating tray.

11. The detection carrier according to any one of claims 1 to 10, characterized in that: Also includes: A substrate carrying the rotating tray and the driving component, the substrate having a supporting shaft, the rotating tray being detachably arranged on the supporting shaft, the substrate being provided with a first through hole, and the rotating tray being constructed to rotate around the supporting shaft so that a plurality of mounting holes are sequentially connected with the first through hole in a vertical direction.

12. The detection carrier according to claim 11, characterized in that: Also includes: A dust cover is provided on a side of the plurality of mounting plates away from the substrate, the dust cover is provided with a second through hole, and the second through hole is arranged opposite to the first through hole in a vertical direction.

13. A calibration device for calibrating an area density meter, characterized in that: It comprises a detection carrier as described in any one of claims 1-12, wherein the detection sheet carried by the detection carrier is a calibration sheet used to calibrate an areal density meter.

14. An area density meter, characterized in that: Comprising a detection carrier as described in any one of claims 1-12.

15. An area density meter, characterized in that: include: A radiation detection device, comprising a radiation source and a detector arranged at intervals, and The calibration device as described in claim 13 is constructed to move the calibration plates in multiple mounting plates in sequence to between the radiation source and the detector.

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