Structure for grabbing slice sample carrying net and microscope system

Abstract

The utility model relates to a structure for grabbing a slice sample carrying net and a microscope system. The structure comprises a clamping frame, a clamping jaw, a movable arm, an elastic piece and a driving mechanism, the clamping jaw comprises a static jaw and a movable jaw, the static jaw is arranged on the clamping frame, the rear end of the movable jaw is pivoted with the rear end of the static jaw through a pivoting piece, a static clamping part is arranged at the front end of the static jaw, and a movable clamping part is arranged at the front end of the movable jaw; the front end of the movable arm is fixedly connected with the rear end of the movable claw, the rear end of the movable arm is provided with a driving part, and the movable arm is provided with a spring groove; one end of the elastic piece is connected with the clamping frame, and the other end of the elastic piece is installed in the spring groove. The driving mechanism is arranged on the clamping frame and connected with the driving part to drive the movable arm to drive the movable claw to rotate, the clamping claw is normally closed under the action of the elastic force of the elastic piece, and the driving mechanism drives the movable arm to overcome the elastic force of the elastic piece to drive the movable claw to rotate so that the clamping claw can be opened. The structure is stable and reliable, repeatability is high, the abrasion rate is small, later maintenance is easy, and mechanical operation is achieved through a driving mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to microscope technical field especially relates to a structure and microscope system of grabbing section sample carrier net. BACKGROUND

[0002] The rapid development of electron microscopic imaging technology makes it possible to carry out high-resolution three-dimensional structure analysis research on complete cells, tissues and even the whole organism. These electron microscopic imaging technologies for large-scale three-dimensional structure research of biological samples are collectively referred to as volume electron microscopy (vEM) technology. In recent years, vEM has developed rapidly in terms of research scale, resolution, throughput and ease of use, and its application in the entire field of life sciences has increased explosively. Based on TEM, the serial section transmission electron microscopy (ssTEM) imaging technology is the earliest but the latest developed technology among the three vEM technologies. Unlike the focused ion beam / scanning electron microscope (FIB-SEM) dual-beam technology and the block scanning electron microscope (SBF-SEM) automatic system, ssTEM has the advantages of rapid high resolution and rapid imaging. However, the development of this technology is currently limited by high-throughput sample preparation and loading, continuous data acquisition, and subsequent data processing algorithms.

[0003] At present, the sample carrier net grabbing method is basically to manually grab 1-6 samples and place them on the sample stage. Since at least 500 samples are required for a complete ssTEM experiment, the manual sample replacement method will consume a lot of time and labor, and the experimental data collection period in years will cause the sample quality to decline, resulting in low experimental efficiency and high cost.

[0004] Therefore, there is an urgent need for a structure and microscope system for grabbing section sample carrier nets to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a structure for grabbing section sample carrier nets to solve the problem of low efficiency of manual operation in the prior art.

[0006] To achieve the above-mentioned purpose, one object of the utility model is to provide a structure for grabbing section sample carrier nets, comprising

[0007] The clamping frame comprises a clamping frame body and a clamping mechanism.

[0008] The clamping jaw comprises a static jaw and a dynamic jaw, the static jaw is arranged on the clamping frame, the rear end of the dynamic jaw is pivoted with the rear end of the static jaw through a pivot, the front end of the static jaw is provided with a static clamping part, and the front end of the dynamic jaw is provided with a dynamic clamping part;

[0009] The movable arm is fixedly connected with the rear end of the dynamic jaw, the rear end of the movable arm is provided with a driving part, and the movable arm is provided with a spring groove;

[0010] The elastic member is connected with the clamping frame at one end and is installed on the spring groove at the other end; and

[0011] The driving mechanism is arranged on the clamping frame and is connected with the driving part to drive the movable arm to drive the dynamic jaw to rotate;

[0012] The clamping jaw is normally closed under the elastic force of the elastic member, and the driving mechanism drives the movable arm to overcome the elastic force of the elastic member to drive the dynamic jaw to rotate to open the clamping jaw.

[0013] As a preferred, the elastic member is a compression spring.

[0014] As a preferred, the clamping jaw further comprises a fixed arm, the fixed arm is detachably connected with the clamping frame through a first screw, and the end of the fixed arm is connected with the static jaw.

[0015] As a preferred, the fixed arm has a movable arm space, and the movable arm is at least partially embedded in the fixed arm.

[0016] As a preferred, the pivot comprises a pivot seat and a pivot shaft, the rear end of the static jaw is fixed on the pivot seat, the pivot shaft is arranged on the pivot seat, and the rear end of the dynamic jaw is rotatably installed on the pivot seat through the pivot shaft.

[0017] As a preferred, the dynamic jaw is connected with the pivot shaft through a ball bearing.

[0018] As a preferred, the clamping frame comprises a front frame section and a rear frame section, the rear frame section is provided with a mounting groove, the front frame section is provided with a front opening, the front opening is in communication with the mounting groove, the driving mechanism is mounted in the mounting groove, the fixed arm passes through the front opening and is mounted on the front frame section, and the movable arm passes through the front opening and is connected with the driving mechanism.

[0019] As a preferred, the static clamping part is provided with a static clamping positioning part.

[0020] As a preferred, the dynamic jaw comprises a dynamic jaw body and a dynamic clamping member which is detachably mounted on the dynamic jaw body, and the dynamic clamping part is arranged at the front end of the dynamic clamping member.

[0021] As preferred, the movable clamping part is provided with a plurality of movable clamping hooks.

[0022] As preferred, the driving mechanism comprises a motor and a cam, the motor is fixed to the clamping frame, the motor has a rotating shaft, the cam is arranged on the rotating shaft, the cam has a first protrusion, the motor is used to drive the rotating shaft to rotate, so as to switch the first protrusion and the driving part to be in abutment connection or not in abutment connection, when the first protrusion is in abutment connection with the driving part, the clamping jaw is opened.

[0023] As preferred, the motor is fixed to the clamping frame through a third screw.

[0024] As preferred, the motor is provided with a control module, the control module is used to receive an external control signal and execute the external control signal.

[0025] As preferred, the control module is provided with a wireless receiving element.

[0026] Another purpose of the utility model is a microscope system, comprising a microscope and the structure of the slice sample carrier net.

[0027] As preferred, the structure further comprises a sample carrier net, the sample carrier net is used to carry a sample, and the movable clamping part and the static clamping part of the structure are used to clamp the sample carrier net.

[0028] As preferred, the sample carrier net is provided with an identification area, and the identification area is provided with a two-dimensional code and / or a bar code.

[0029] As preferred, the thickness of the sample carrier net is 80-100 microns.

[0030] As can be seen from the above, the technical scheme provided by the utility model realizes the closing or opening of the clamping jaw by the driving mechanism and the movable arm to grab the sample carrier net, and the structure is stable and reliable, has high repeatability, small wear rate, and is easy to maintain and maintain in the later period, and the driving mechanism is used for realizing mechanical operation, and the efficiency is higher than that of the manual operation of the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a perspective view of the structure for grabbing a slice sample carrier net according to an embodiment of the utility model;

[0032] Figure 2 It is a front view of the structure for grabbing a slice sample carrier net according to an embodiment of the utility model;

[0033] Figure 3 It is a sectional view along the direction of A-A of the structure for grabbing a slice sample carrier net according to an embodiment of the utility model (closed); Figure 2 ​

[0034] Figure 4 is a sectional view (open) of a structure embodiment of the utility model for grabbing slice sample carrier net;

[0035] Figure 5 is a structure embodiment of the utility model for grabbing slice sample carrier net Figure 4 is an enlarged view of I part in the middle;

[0036] Figure 6 is a perspective view of the clamping frame of the structure embodiment of the utility model for grabbing slice sample carrier net;

[0037] Figure 7 is a perspective view of the driving mechanism of the structure embodiment of the utility model for grabbing slice sample carrier net;

[0038] Figure 8 is a perspective view of the clamping jaw and movable arm of the structure embodiment of the utility model for grabbing slice sample carrier net;

[0039] Figure 9 is a front view of the sample carrier net of the embodiment of the utility model for microscope system.

[0040] In the figure:

[0041] 100, clamping frame; 110, front frame section; 111, front opening; 120, rear frame section; 121, mounting groove;

[0042] 200, clamping jaw; 210, static jaw; 211, static clamping positioning part; 2101, static clamping part; 220, movable jaw; 221, movable jaw body; 222, movable clamping piece; 2221, movable clamping hook; 223, second screw; 2201, movable clamping part; 230, pivot connecting piece; 231, pivot connecting seat; 232, pivot connecting shaft; 233, rolling bearing; 240, fixed arm; 241, first screw;

[0043] 300, movable arm; 310, driving part; 320, spring groove;

[0044] 400, driving mechanism; 410, motor; 411, rotating shaft; 420, cam; 421, first protrusion; 430, third screw;

[0045] 500, elastic piece;

[0046] 600, sample carrier net; 610, identification area. DETAILED DESCRIPTION

[0047] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0048] This utility model defines certain directional terms. Unless otherwise stated, the directional terms used, such as "up", "down", "left", "right", "inner", and "outer", are used for ease of understanding and therefore do not constitute a limitation on the scope of protection of this utility model.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] Reference Figures 1 to 8 As shown, this embodiment provides a preferred implementation of a structure for gripping a slice sample carrier, which includes a gripper 100, a gripper 200, a movable arm 300, and a drive mechanism 400.

[0052] The gripper 100 is preferably made of a metal material, such as aluminum alloy, titanium alloy, or stainless steel. The gripper 100 is used to mount the gripper 200 and the drive mechanism 400, and also to mount the structure for gripping the sample tray onto the transfer component of the microscope system. The transfer component of the microscope system grips the sample tray and transfers the sample tray through the structure for gripping the sample tray.

[0053] The clamping jaw 200 comprises a static jaw 210 and a dynamic jaw 220, the static jaw 210 is arranged on the clamping frame 100, and the rear end of the dynamic jaw 220 is pivoted with the rear end of the static jaw 210 through a pivot 230. The front end of the static jaw 210 is provided with a static clamping part 2101, and the front end of the dynamic jaw 220 is provided with a dynamic clamping part 2201. When the dynamic jaw 220 rotates so that the dynamic clamping part 2201 approaches the static clamping part 2101, the clamping jaw 200 is closed for clamping the sample carrier grid; when the dynamic jaw 220 rotates so that the dynamic clamping part 2201 is away from the static clamping part 2101, the clamping jaw 200 is opened for releasing the sample carrier grid. The static jaw 210 can be installed on the clamping frame 100 through mechanical connection modes such as welding, bonding, integral molding connection or screw connection.

[0054] The front end of the movable arm 300 is fixedly connected with the rear end of the dynamic jaw 220, and the rear end of the movable arm 300 is provided with a driving part 310. The movable arm 300 is used for rotating the dynamic jaw 220 around the pivot 230 under the driving of external power, so as to close or open the dynamic clamping part 2201 and the static clamping part 2101, and realize the action of clamping or releasing the sample carrier grid.

[0055] The driving mechanism 400 is arranged on the clamping frame 100 and connected with the driving part 310, so as to drive the movable arm 300 to rotate the dynamic jaw 220. The driving mechanism 400 is used for providing external power, and the movable arm 300 uses the principle of lever structure, the pivot 230 is used as a pivot support point, and the movable arm 300 drives the dynamic jaw 220 of the clamping jaw 200 to rotate around the pivot 230. The driving mechanism 400 can be selected from a cylinder mechanism and a servo motor mechanism.

[0056] The structure of the clamping and cutting sample carrier grid of the utility model is driven by the driving mechanism 400 and the movable arm 300 to close or open the clamping jaw 200 to clamp the sample carrier grid, which is stable and reliable in structure, high in repeatability, small in wear rate, easy to maintain and maintain in later period, and high in operation efficiency compared with the manual operation of the prior art.

[0057] Further, as Figure 3 and 4As shown, the structure of the slice sample carrier net grabbing device further comprises a resilient member 500. One end of the resilient member 500 is connected with the clamping frame 100, and the other end of the resilient member 500 is connected with the movable arm 300. The clamping jaw 200 is normally closed under the elastic force of the resilient member 500. The driving mechanism 400 drives the movable arm 300 to overcome the elastic force of the resilient member 500 to drive the movable jaw 220 to rotate, so that the clamping jaw 200 is opened. In the embodiment, the resilient member 500 is preferably a compression spring. One end of the resilient member 500 is elastically abuttingly connected with the clamping frame 100, and the other end of the resilient member 500 is elastically abuttingly connected with the movable arm 300. When there is no other external force, the movable jaw 220 is only in the state of being kept still near the static jaw 2101 under the elastic force of the resilient member 500. At this time, the clamping jaw 200 is in a closed state, that is, the clamping jaw 200 is in a normally closed state under the action of the resilient member. As shown, if the clamping jaw is to be opened, the driving mechanism 400 is used to overcome the elastic force of the resilient member 500 to drive the movable arm 300 to rotate, and the movable jaw 220 is rotated, so that the movable jaw 220 is away from the static jaw 2101, thereby opening the clamping jaw 200. As shown, the resilient member 500 is abuttingly arranged at the position of the movable arm 300 near the driving part 310. Under the action of the elastic potential energy, the movable jaw is in a normally closed state.

[0058] Preferably, as shown in Figs. Figure 3 、 4 and 8, the movable arm 300 is provided with a spring groove 320. One end of the resilient member 500 is installed on the clamping frame 100, and the other end of the resilient member 500 is installed on the spring groove 320. The resilient member 500 is limitedly installed by the spring groove 320, so that the installation and dismounting of the resilient member are facilitated. Figure 3 、 4 In particular, as shown in Figs.

[0059] The structure of the slice sample carrier net grabbing device is used to transfer the clamped sample carrier net. When the clamping jaw 200 is kept in a clamped state by the power of the driving mechanism 400, the clamping jaw 200 is in a rigid clamping state. However, vibration is often generated during the transfer process. If the power provided by the driving mechanism 400 is too large, the sample carrier net is easily damaged. If the power provided by the driving mechanism 400 is too small, the sample carrier net is easily separated and falls off. Therefore, the resilient member 500 is further arranged on the structure of the slice sample carrier net grabbing device. When the clamping jaw 200 is kept in a clamped state under the elastic force of the resilient member 500, the elastic force of the resilient member 500 has the advantages of being continuous and stable, so that the clamping force is neither too large nor too small, and the risk of damage or separation and falling off of the sample carrier net is reduced. At the same time, the influence of the mechanical vibration generated during the transfer process of the structure of the slice sample carrier net grabbing device is at least partially offset by the elastic potential energy of the resilient member 500, so that the clamping stability is good.

[0060] Further, as shown in Figure 3 , 4 and 8, the clamping jaw 200 further comprises a fixing arm 240, the fixing arm 240 is detachably connected with the clamping frame 100 through a first screw 241, and an end of the fixing arm 240 is connected with the static jaw 210. Thus, the static jaw 210 is fixedly connected with the clamping frame 100 through the fixing arm 240. The clamping jaw 200 is detachably installed on the clamping frame 100 by using the first screw 241, when the clamping jaw 200 is damaged, different clamping jaws 200 can be replaced, or different types of clamping jaws 200 can be replaced according to different sample carriers. The vibration generated during the grabbing process can be avoided by locking and fixing using the special first screw 241.

[0061] Further, as shown in Figure 1 , 3 , 4 and 8, the pivot 230 comprises a pivot seat 231 and a pivot shaft 232, the rear end of the static jaw 210 is fixed to the pivot seat 231, and the pivot shaft 232 is arranged in the pivot seat 231. The rear end of the movable jaw 220 is rotatably installed with the pivot seat 231 through the pivot shaft 232. Specifically, the pivot seat 231 has a U-shaped structure, the pivot shaft is installed on the two arms of the pivot seat 231, and the static jaw 210 and the fixing arm 240 are fixedly connected with the pivot seat 231.

[0062] As shown in Figure 8 , the fixing arm 240 has a movable arm space, and the movable arm 300 can be at least partially embedded in the fixing arm 240. The fixing arm 240 has a movable arm space for accommodating the movable arm, and part of the movable arm 300 is accommodated in the movable arm space when the movable arm 300 is close to the fixing arm 240. The movable arm 300 can be at least partially accommodated in the movable arm space through the movable arm space of the fixing arm 240, so that the structure is compact.

[0063] Further, as shown in Figure 3 , 4 , the movable jaw 220 is connected with the pivot shaft 232 through a ball bearing 233. The ball bearing 233 is used as the pivot rotation matching, the grabbing of the clamping jaw 200 is more stable, and the error is reduced.

[0064] As shown in Figure 1 , 3As shown in Figures 4 and 6, in this embodiment, the gripper 100 includes a front frame section 110 and a rear frame section 120. The rear frame section 120 is provided with a mounting groove 121, and the front frame section 110 is provided with a front opening 111, which communicates with the mounting groove 121. The drive mechanism 400 is installed in the mounting groove 121, the fixed arm 240 passes through the front opening 111 and is installed in the front frame section 110, and the movable arm 300 passes through the front opening 111 and is connected to the drive mechanism 400. Specifically, the drive mechanism 400 is located in the mounting groove 121, and the rear end of the movable arm 300 passes through the front opening 111, so that the drive part 310 is connected to the drive mechanism 400. Both the front frame section 110 and the fixed arm 240 are provided with a first screw hole that mates with the first screw 241. After the fixed arm 240 passes through the front opening 111, the first screw 241 is screwed into the outer wall of the front frame section 110 to fix the connection between the front frame section 110 and the fixed arm 240.

[0065] Furthermore, such as Figure 1 , 3 As shown in Figures 4 and 6, the diameter of the pivot seat 231 is larger than the diameter of the front opening 111, so that it is engaged with the front end face of the front opening 111. The pivot seat 231 serves a positioning function and can be equipped with grippers 200 of different sizes, making it convenient to replace the grippers 200 according to different sample screen carrying needs.

[0066] like Figure 1 , 3 As shown in Figures 4 and 6, the static clamp portion 210 is provided with a static clamp positioning portion 211, which is used to position the clamped sample carrier mesh so that the sample carrier mesh is accurately clamped. In this embodiment, the static clamp positioning portion 211 consists of two spaced static clamp positioning posts extending from the surface of the static clamp portion 2101.

[0067] like Figure 1 , 3 As shown in Figures 4 and 6, the movable gripper 220 includes a movable gripper body 221 and a movable clamping member 222 detachably mounted on the movable gripper body 221. The movable clamping part 2201 is located at the front end of the movable clamping member 222. The movable gripper 220 is configured as two parts: the movable gripper body 221 and the movable clamping member 222. The movable clamping member 222 is detachably connected to the movable gripper body 221 by a second screw 223. A suitable movable clamping member 222 can be replaced as needed, thus broadening the applicability of the structure for gripping the sample tray.

[0068] like Figure 5 and 8 As shown, the movable clamp 222 is provided with multiple movable clamping hooks 2221. As shown in the figure, the movable clamp 222 has two movable clamping hooks 2221, which are arranged at intervals. By setting the movable clamping hooks 2221, point contact is achieved during clamping, resulting in better clamping performance.

[0069] Furthermore, such as Figure 1 ,3 As shown in Figures 4 and 7, in this embodiment, the drive mechanism 400 is a servo motor mechanism. The drive mechanism 400 includes a motor 410 and a cam 420. The motor 410 is fixed to the gripper 100 and has a rotating shaft 411. The cam 420 is disposed on the rotating shaft 410 and has a first protrusion 421. The motor 410 is used to drive the rotating shaft 411 to rotate, so as to switch the first protrusion 421 to abut against the drive part 310 or not to abut against it. When the first protrusion 421 abuts against the drive part 310, the gripper 200 is open; when the first protrusion 421 is not abuts against the drive part 310, the gripper 200 is in a normally closed state. When the structure that grips the sample carrier mesh picks up the sample carrier mesh, the motor 410 operates, causing the first protrusion 421 of the cam 420 to abut against the drive unit 310. The movable arm 300 rotates the movable jaw 220, thereby opening the gripper 200. When the sample carrier mesh enters between the movable clamping part 2201 and the stationary clamping part 2101, the motor 410 operates, the first protrusion 421 of the cam 420 is no longer abutting against the drive unit 310, the elastic potential energy of the elastic element 500 is converted into an upward force, and the gripper 200 closes to pick up the sample carrier mesh, thus realizing the gripping of the sample carrier mesh.

[0070] For example, in this embodiment, the cam 420 is an eccentric wheel, that is, the cam 420 is an eccentrically mounted disk, such that a first protrusion 421 is formed on the side of the disk away from the rotating shaft 411.

[0071] like Figure 3 and 4 As shown, the motor 410 is fixed to the clamping frame 100 by the third screw 430. A third screw hole is provided at the bottom of the mounting groove 121, and the motor 410 is mounted on the bottom surface of the mounting groove 121 by the third screw 430.

[0072] The motor 410 is equipped with a control module (not shown in the figure). The control module is used to receive and execute external control signals. The motor 410 is preferably a stepper motor. Under the control of the control module, the shaft of the motor 410 rotates half a turn each time, so that the first protrusion abuts against or does not abut against the drive part 310, thereby switching the open or closed state of the gripper 200.

[0073] Preferably, the control module is equipped with a receiving element, which can be a wired receiving element or a wireless receiving element. In this embodiment, the control module is equipped with a wireless receiving element to receive control signals, reducing the complexity of wiring.

[0074] This invention also provides a microscope system, including a microscope and a sample-grabbing grid structure as described in the above embodiments.

[0075] like Figure 1 , 2As shown in Figs. 3, 4 and 9, the microscope system further comprises a sample carrier 600 for carrying a sample, and the movable clamping part 2201 and the static clamping part 2101 of the structure for grabbing the sample carrier are used for clamping the sample carrier 600.

[0076] As shown in Figs. 3, 4 and 9, the microscope system further comprises a sample carrier 600 for carrying a sample, and the movable clamping part 2201 and the static clamping part 2101 of the structure for grabbing the sample carrier are used for clamping the sample carrier 600. Figure 9 As shown in Figs. 3, 4 and 9, the microscope system further comprises a sample carrier 600 for carrying a sample, and the movable clamping part 2201 and the static clamping part 2101 of the structure for grabbing the sample carrier are used for clamping the sample carrier 600.

[0077] The thickness of the sample carrier 600 is 80-100 microns. The structure for grabbing the sample carrier can grab a single sample carrier, which is different from the grabbing mode of most devices on the market and has more flexible choices in the experimental process.

[0078] Although the utility model has been described in detail above by general description, specific embodiments and tests, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model all belong to the scope of protection required by the utility model.

Claims

1. A structure for grasping a slice sample carrier mesh, characterized by, The structure comprises a clamping frame; a clamping jaw, which comprises a static jaw and a dynamic jaw, the static jaw is arranged on the clamping frame, the rear end of the dynamic jaw is pivoted with the rear end of the static jaw through a pivot, the front end of the static jaw is provided with a static clamping part, and the front end of the dynamic jaw is provided with a dynamic clamping part; a movable arm, the front end of the movable arm is fixedly connected with the rear end of the dynamic jaw, the rear end of the movable arm is provided with a driving part, and the movable arm is provided with a spring groove; a spring, one end of the spring is connected with the clamping frame, and the other end of the spring is installed in the spring groove; and a driving mechanism, which is arranged on the clamping frame and connected with the driving part, so as to drive the movable arm to drive the dynamic jaw to rotate. The clamping jaw is normally closed under the elastic force of the spring, and the driving mechanism drives the movable arm to drive the dynamic jaw to rotate against the elastic force of the spring to open the clamping jaw.

2. The structure for grasping a slice sample carrier mesh according to claim 1, wherein The spring is a compression spring.

3. The structure for grasping a slice sample carrier mesh according to claim 1, wherein The clamping jaw further comprises a fixed arm, the fixed arm is detachably connected with the clamping frame through a first screw, and the end of the fixed arm is connected with the static jaw.

4. The structure for grasping a slice sample carrier mesh according to claim 3, wherein The fixed arm has a movable arm space, and the movable arm can be at least partially embedded in the fixed arm.

5. The structure for grasping a slice sample carrier mesh according to claim 3, wherein The pivot comprises a pivot seat and a pivot shaft, the rear end of the static jaw is fixed on the pivot seat, the pivot shaft is arranged on the pivot seat, and the rear end of the dynamic jaw is rotatably installed on the pivot seat through the pivot shaft.

6. The structure for grasping a slice sample carrier mesh according to claim 5, wherein The dynamic jaw is connected with the pivot shaft through a ball bearing.

7. The structure for grasping a slice sample carrier mesh according to claim 6, wherein The clamping frame comprises a front frame section and a rear frame section, the rear frame section is provided with a mounting groove, the front frame section is provided with a front opening, the front opening is communicated with the mounting groove, the driving mechanism is installed in the mounting groove, the fixed arm passes through the front opening and is installed on the front frame section, and the movable arm passes through the front opening and is connected with the driving mechanism.

8. The structure for grasping a slice sample carrier mesh according to claim 2, wherein The static clamping part is provided with a static clamping positioning part.

9. The structure for grasping a slice sample carrier mesh according to claim 2, wherein The dynamic jaw comprises a dynamic jaw body and a dynamic clamping part which is detachably installed on the dynamic jaw body, and the dynamic clamping part is arranged at the front end of the dynamic clamping part.

10. The structure for grasping a slice sample carrier mesh according to claim 9, wherein, The dynamic clamping part is provided with a plurality of dynamic clamping hooks.

11. The structure for gripping a slice sample carrier mesh according to any one of claims 1 to 10, wherein The driving mechanism comprises a motor and a cam, the motor is fixed on the clamping frame, the motor has a rotating shaft, the cam is arranged on the rotating shaft, the cam has a first protrusion, the motor is used to drive the rotating shaft to rotate, so as to switch the abutting connection or non-abutting connection between the first protrusion and the driving part, and when the first protrusion abuts with the driving part, the clamping jaw is opened.

12. The structure for grasping a slice sample carrier mesh according to claim 11, wherein, The motor is fixed on the clamping frame through a third screw.

13. The structure for grasping a slice sample carrier mesh according to claim 12, wherein The motor is provided with a control module, which is used to receive external control signals and execute external control signals.

14. The structure for grasping a slice sample carrier mesh according to claim 13, wherein, The control module is provided with a wireless receiving element.

15. A microscope system, characterized by The structure further comprises a microscope and the sample carrier net of any one of claims 1 to 14.

16. The microscope system of claim 15, wherein, The structure further comprises a sample carrier net, the dynamic clamping part and the static clamping part of the structure are used to clamp the sample carrier net.

17. The microscope system of claim 16, wherein, The sample carrier net is provided with an identification area, the identification area is provided with a two-dimensional code and / or a bar code.

18. The microscope system of claim 16, wherein, The thickness of the sample carrier net is 80-100 microns.

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