Clamping mechanism and automatic workstation

Abstract

The utility model relates to a clamping mechanism and an automatic workstation, the automatic workstation comprises the clamping mechanism, the clamping mechanism comprises a base plate, a first gear, two first racks, a clamping assembly, a transmission assembly and a shifting assembly, the first gear is rotationally arranged in the center of the base plate, and the transmission assembly is arranged on the base plate; the two first racks are arranged at intervals in the radial direction of the first gear and are engaged with the first gear in an anti-symmetric mode with the center point of the first gear as the symmetric center, each first rack is connected with one clamping assembly, and the stirring assembly is connected to one first rack in a transmission mode. The two clamping assemblies can be far away from each other to loosen the consumable plate or get close to each other to clamp the consumable plate in a gear and rack transmission mode, so that the limited pulling force for pulling the shifting assemblies can be effectively amplified, and the clamping force and uniform clamping force of the clamping assemblies are guaranteed; therefore, the consumable plate filled with reagents can be firmly clamped and is prevented from falling off.

Description

Technical Field

[0001] This application relates to the field of medical detection technologies, and particularly to a clamping mechanism and an automated workstation. Background Art

[0002] With the development of automation technologies, the medical industry requires less human participation in the experiments or detections of reagents. To ensure that reagents are more intelligent and reliable in each experimental link, an automated workstation needs to be equipped with a clamping mechanism to prevent the consumable plate containing the reagent from falling off. This clamping mechanism can automatically open and close to automatically clamp or release the consumable plate, so as to cooperate with the automated process of the entire experiment.

[0003] There are generally two types of clamping mechanisms for preventing the consumable plate from falling off in existing automated workstations. One is to clamp the consumable plate by means of flanges that automatically rotate and open on both sides, and the other is to clamp the consumable plate by means of a connecting rod mechanism that drives the grippers at both ends to automatically tighten. However, both of the above two clamping mechanisms have their respective problems. Specifically, the clamping method of clamping the consumable plate by means of flanges that automatically rotate and open on both sides will cause obvious deformation of the consumable plate; while the method of clamping the consumable plate by means of a connecting rod mechanism that drives the grippers at both ends to automatically tighten will result in the grippers not being able to firmly clamp the consumable plate due to uneven clamping force during the entire movement process, thus causing the consumable plate to fall off. Summary of the Utility Model

[0004] Based on this, in view of the above problems existing in the clamping mechanism of the existing automated workstation, it is necessary to provide a clamping mechanism that can solve the above problems and an automated workstation including the clamping mechanism.

[0005] According to one aspect of the present application, there is provided a clamping mechanism, including:

[0006] A substrate;

[0007] A first gear rotatably provided at the center of the substrate;

[0008] Two first racks spaced along the radial direction of the first gear and meshing with the first gear in an anti-symmetric manner with the center point of the first gear as the center of symmetry. Each first rack is respectively connected with a clamping component, and the two clamping components are relatively spaced along a diagonal line of the substrate and arranged on the substrate.

[0009] A toggle assembly is connected to one of the first racks through a transmission assembly. The toggle assembly can move relative to the substrate along the direction of one of the edges of the substrate under the action of an external force, so as to drive one of the first racks to move along the direction of the diagonal extension through the transmission assembly. In response to the movement of one of the first racks, the first gear can rotate around its own central axis and drive the other first rack to move in the opposite direction along the direction of the diagonal extension, so that the two clamping assemblies can approach or move away from each other.

[0010] In one embodiment, the transmission assembly includes:

[0011] a second gear, spaced apart from the first gear;

[0012] a second rack fixedly connected to one of the first racks, the first rack having a first meshing edge meshing with the first gear, the second rack having a second meshing edge disposed opposite to the first meshing edge, the second meshing edge meshing with the second gear;

[0013] The third rack is fixedly connected to the toggle assembly, and the third rack has a third meshing edge, and the third meshing edge is meshed with the second gear.

[0014] In one embodiment, the second gear includes a first meshing wheel and a second meshing wheel coaxially connected, the wheel diameter of the first meshing wheel is smaller than the wheel diameter of the second meshing wheel, the second meshing edge meshes with the first meshing wheel, and the third meshing edge meshes with the second meshing wheel.

[0015] In one embodiment, any edge of the substrate forms an angle of 45° with a diagonal of the substrate, the first meshing edge and the second meshing edge are parallel to each other, and the third meshing edge forms an angle of 45° with both the first meshing edge and the second meshing edge.

[0016] In one embodiment, the toggle assembly is connected to the base plate via an elastic element, and the elastic element is configured to provide an elastic force for automatically resetting the toggle assembly and driving the two clamping assemblies toward each other when the toggle assembly moves and drives the two clamping assemblies away from each other.

[0017] In one embodiment, the first rack is provided with a waist-shaped hole extending in the direction of the diagonal line, and the base plate is provided with a limit column, which passes through the waist-shaped hole. The limit column is configured to abut against the hole walls at opposite ends of the waist-shaped hole when the first rack moves in the direction of the diagonal line to limit the movement range of the first rack.

[0018] In one embodiment, the first gear, the first rack, the transmission assembly and the toggle assembly are arranged on one side of the substrate along its own thickness direction, and the clamping assembly includes a base plate and a clamping column, the base plate is connected to the first rack, and the clamping column is connected to the base plate and is located on the other side of the substrate in its own thickness direction.

[0019] In one of the embodiments, a slider is provided on the side of the bottom plate away from the clamping column, a slide rail is provided on the base plate, the slide rail is arranged along the direction in which the diagonal line extends, and the slider is slidably connected to the slide rail.

[0020] In one embodiment, the diameter of the clamping column gradually decreases from the end of the clamping column away from the substrate toward the substrate;

[0021] And / or, the outer wall of the clamping column has a plurality of teeth arranged in sequence along the axial direction of the clamping column, and each of the teeth has an inclined surface inclined relative to a horizontal plane.

[0022] According to another aspect of the present application, an automated workstation is provided, comprising a base and a clamping mechanism as described in any of the above schemes, wherein the clamping mechanism is arranged on the base.

[0023] The clamping mechanism and the automated workstation are provided with a first gear and two first racks respectively meshed with the first gear on the substrate, a clamping assembly is respectively provided on each first rack, the two clamping assemblies are relatively spaced apart along the diagonal of the substrate, and a transmission assembly is provided to connect the toggle assembly with one of the first racks in a transmission manner, so that when the toggle assembly is driven by hand or a motor to move along one edge of the substrate, the toggle assembly can drive one of the first racks to move along the direction of the diagonal extension of the substrate through the transmission assembly, and at the same time drive the other first rack along the direction of the diagonal extension of the substrate through the first gear. It moves in opposite directions, so that the two clamping components can be moved away from each other to loosen the consumable plate or moved closer to each other to clamp the consumable plate through gear rack transmission. Therefore, on the one hand, the limited pulling force of the pulling and toggling component can be effectively amplified, ensuring the clamping strength and uniform clamping force of the clamping component, thereby firmly clamping the consumable plate containing the reagent and preventing the consumable plate from falling off; on the other hand, the complex diagonal contraction movement is converted into a simple and labor-saving linear movement along the edge of the substrate, which provides a more convenient and reliable solution for clamping the consumable plate for the automated workstation in medical experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an axial view of a mixer provided in one embodiment of the present application.

[0025] Figure 2 An axial view of the mixer provided in one embodiment of the present application with the clamping mechanism hidden.

[0026] Figure 3 A schematic diagram of the structure of the clamping mechanism provided in one embodiment of the present application, facing the base side.

[0027] Figure 4 This is a schematic structural diagram of the clamping mechanism provided in one embodiment of the present application, facing away from the base.

[0028] Figure 5 for Figure 3 A magnified schematic diagram of area A in the middle.

[0029] Figure 6 A schematic diagram of the structure of a clamping column in a clamping mechanism provided in one embodiment of the present application.

[0030] Description of reference numerals:

[0031] 10. Automatic mixer; 100. Base; 200. Clamping mechanism; 210. Base plate; 220. First gear; 230. First rack; 231. First meshing edge; 232. Waist-shaped hole; 240. Clamping assembly; 241. Bottom plate; 242. Clamping column; 2421. Tooth; 243. Slider; 250. Toggle assembly; 251. Body; 252. Toggle rod; 253. Drive block; 260. Transmission assembly; 261. Second gear; 2611. First meshing wheel; 2612. Second meshing wheel; 262. Second rack; 2621. Second meshing edge; 263. Third rack; 2631. Third meshing edge; 270. Elastic element; 280. Limiting column; 300. Eccentric shaft; 40. Rotation axis. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application.

[0034] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0035] In the present application, unless otherwise clearly specified and limited, if there are terms such as "install", "connect", "join", "fix", etc., these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "on" or "under" a second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0037] It should be noted that if a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there can be an intermediate component. If a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0038] This application provides a clamping mechanism and an automated workstation, where the automated workstation includes the clamping mechanism. The automated workstation is used to conduct experiments or tests on reagents, and the clamping mechanism is used to clamp a consumable plate containing reagents to prevent the reagent from spilling or splashing due to the falling off of the consumable plate.

[0039] Taking the automated workstation as an automatic mixer as an example below, the structure of the automatic mixer and the structure of the clamping mechanism will be described. The automatic mixer is used to oscillate and mix experimental reagents. It can be understood that the automated workstation of this application is not limited to an automatic mixer, and the clamping mechanism of this application is not limited to being applied in an automatic mixer, nor is it limited to clamping a consumable plate in an automated workstation. It can also be applied to any scenario where an object needs to be clamped.

[0040] Refer to Figure 1 , Figure 1 FIG. shows a schematic diagram of an automatic mixer 10 provided by an embodiment of the present application. The automatic mixer 10 provided by the embodiment of the present application includes a base 100 and a clamping mechanism 200. The base 100 is used for supporting, and the clamping mechanism 200 is disposed on the base 100 and is used to clamp a consumable plate containing reagents to prevent the consumable plate from falling off. Specifically, as Figure 2 shown, an eccentric shaft 300 capable of rotating around its own central axis is provided on the base 100, and the clamping mechanism 200 is connected to the eccentric shaft; the eccentric shaft 300 can rotate around a rotation axis 40 under the drive of an external drive source, so that the eccentric shaft 300 eccentrically rotates around the rotation axis 40, thereby causing the clamping mechanism 200 to also eccentrically rotate around the rotation axis 40, so as to realize that the clamping mechanism 200 can clamp the consumable plate and eccentrically rotate, thereby realizing eccentric oscillation of the reagent, and further achieving the purpose of mixing the reagent.

[0041] Figure 3 and Figure 4The structure schematic diagram of the clamping mechanism 200 provided in an embodiment of the present application is shown. The clamping mechanism 200 provided in the embodiment of the present application includes a base plate 210, a first gear 220, a first rack 230, a clamping assembly 240, a toggle assembly 250 and a transmission assembly 260, wherein the base plate 210 is used to carry the consumable plate; the clamping assembly 240 has two, and the two clamping assemblies 240 are relatively spaced and movably arranged on the base plate 210 along a diagonal line of the base plate 210, and the two clamping assemblies 240 can approach each other to clamp the consumable plate, or can move away from each other to loosen the consumable plate; the first gear 220 is rotatably arranged at the center of the base plate 210, and the first rack 230 also has two, and the two first racks 230 are spaced along the radial direction of the first gear 220. The first gear 220 is antisymmetrically meshed with the first gear 220 with the center point of the first gear 220 as the center of symmetry, and each first rack 230 is respectively connected to a clamping assembly 240; the toggle assembly 250 is connected to a first rack 230 through a transmission assembly 260. Under the action of external force, the toggle assembly 250 can move relative to the substrate 210 along the direction of extension of one of the edges of the substrate 210, so as to drive one of the first racks 230 to move in the direction of diagonal extension through the transmission assembly 260. In response to the movement of one of the first racks 230, the first gear 220 can rotate around its own central axis and drive the other first rack 230 to move in the opposite direction along the diagonal extension, so that the two clamping assemblies 240 can approach or move away from each other.

[0042] Specifically, in the structure of the transmission assembly 260, combined with Figure 3 and Figure 5 As shown, the transmission assembly 260 includes a second gear 261, a second rack 262 and a third rack 263, wherein the second gear 261 is spaced apart from the first gear 220, the second rack 262 is fixedly connected to one of the first racks 230, the first rack 230 has a first meshing edge 231, the first meshing edge 231 is meshed with the outer periphery of the first gear 220, the second rack 262 has a second meshing edge 2621 arranged opposite to the first meshing edge 231, the second meshing edge 2621 is meshed with the outer periphery of the second gear 261, the third rack 263 is fixedly connected to the toggle assembly 250, and the third rack 263 has a third meshing edge 2631, the third meshing edge 2631 is meshed with the second gear 261.

[0043] Preferably, in order to be able to amplify the pulling force of pulling the toggle assembly 250 through a certain transmission ratio, so that it is more labor-saving when pulling the toggle assembly 250, the second gear 261 includes a first meshing wheel 2611 and a second meshing wheel 2612 that are coaxially arranged, the wheel diameter of the first meshing wheel 2611 is smaller than the wheel diameter of the second meshing wheel 2612, the second meshing edge 2621 is meshed with the first meshing wheel 2611, and the third meshing edge 2631 is meshed with the second meshing wheel 2612.

[0044] More preferably, in the embodiment shown in the figure, the substrate 210 is rectangular, any edge of which forms an angle of 45° with the diagonal, the first meshing edge 231 and the second meshing edge 2621 are parallel to each other, and the third meshing edge 2631 forms an angle of 45° with both the first meshing edge 231 and the second meshing edge 2621.

[0045] Refer to the figure, from Figure 3 Observing from the outside of the paper toward the inside of the paper, when the external force drives the toggle assembly 250 to move in the downward direction in the figure, it can drive the second gear 261 to rotate counterclockwise, and at the same time drive the second rack 262 and a first rack 230 connected to the second rack 262 to move in the upper left direction in the figure. At this time, the first gear 220 rotates clockwise, and at the same time drives the other first gear 230 to move in the lower right direction, thereby making the two clamping assemblies 240 move away from each other to loosen the consumable plate; conversely, when the toggle assembly 250 moves in the upward direction in the figure, it can make the two clamping assemblies 240 move closer to each other to clamp the consumable plate.

[0046] In this way, by relatively arranging the two clamping assemblies 240 in the direction extending along the diagonal of the substrate 210, the clamping assemblies 240 can clamp the two relative corners of the consumable plate, thereby clamping the consumable plate more firmly; and by arranging the transmission assembly 260, the toggle assembly 250 can move along one of the edges of the substrate 210 under the transmission of the transmission assembly 260, thereby driving the two clamping assemblies 240 to move relative to each other in the direction extending along the diagonal of the substrate 210. In the transmission mode of all components, the transmission mode is a gear and rack meshing with each other, so the limited pulling force of pulling the toggle assembly 250 can be effectively amplified to obtain the pulling force along the diagonal direction of the substrate 210, thereby ensuring the clamping strength and uniform clamping force of the clamping assembly 240, thereby firmly clamping the consumable plate containing the reagent and preventing the consumable plate from falling off.

[0047] For further information, please refer to Figure 3In terms of the structure of the toggle assembly 250, the toggle assembly 250 includes a body 251, a lever 252 and a driving block 253, wherein the body 251 is movably connected to the substrate 210, the lever 252 and the driving block 253 are respectively arranged on the body 251, and the lever 252 is protruded relative to the edge of the substrate 210, so that it is convenient to manually touch the lever 252 and drive the toggle assembly 250 to move relative to the substrate 210 through the lever 252; the driving block 253 is used to connect with an external driving source so that the driving source can drive the toggle assembly 250 to move, thereby being able to automatically drive the two clamping assemblies 240 to move closer or farther from each other instead of manually.

[0048] Furthermore, the toggle assembly 250 is also connected to the base plate 210 via an elastic element 270 (such as a spring or a tension spring). The elastic element 270 is configured to provide an elastic force that automatically resets the toggle assembly 250 and drives the two clamping assemblies 240 to move closer to each other when the toggle assembly 250 moves and drives the two clamping assemblies 240 to move away from each other, so that the consumable plate can be firmly clamped by the elastic force provided by the elastic element 270 when being clamped by the clamping assembly 240, thereby ensuring that the clamping assembly 240 is always in a clamped state.

[0049] Please continue reading Figure 5 In order to limit the first rack 230 so that the first rack 230 can only move within a certain range of movement, in one embodiment, the first rack 230 is provided with a waist-shaped hole 232 extending in the direction of the diagonal extension, and a limiting column 280 is provided on the base plate 210. The limiting column 280 is penetrated through the waist-shaped hole 232. The limiting column 280 is configured to abut against the hole walls at opposite ends of the waist-shaped hole 232 when the first rack 230 moves in the direction of the diagonal extension, so as to limit the range of movement of the first rack 230. When the first rack 230 moves a certain distance in the direction of the diagonal extension, the limiting column 280 will abut against the hole wall of the waist-shaped hole 232, so that the first rack 230 cannot continue to move, so that the first rack 230 can only move within the length range of the waist-shaped hole 232, ensuring that the first rack 230 can effectively cooperate with the first gear 220 for transmission during operation and will not float up and down beyond the cooperation range with the first gear 220.

[0050] In the structure of the clamping assembly 240, as shown in FIG. Figure 1 and Figure 3As shown, the clamping assembly 240 includes a bottom plate 241 and a clamping column 242, wherein the clamping column 242 is connected to the upper side of the bottom plate 241, and the first rack 230 is connected to the lower side of the bottom plate 241, so that the first rack 230, the first gear 220, the transmission assembly 260 and the toggle assembly 250 are located on one side of the substrate 210 in the thickness direction (i.e., the side facing the base 100), and the clamping column 242 is located on the other side of the substrate 210 in the thickness direction (i.e., the side away from the base 100). In this way, space can be saved, and the consumable plate can be fixed on the side of the substrate 210 away from the base 100 by the clamping column 242 without obstruction, and because the first gear 220, the first rack 230 and the transmission assembly 260 are hidden on the bottom side of the substrate 210, the automatic mixer 10 can also be made to look beautiful.

[0051] Preferably, if Figure 1 and Figure 3 As shown, each clamping assembly 240 includes two clamping columns 242. Of course, the number of clamping columns 242 in each clamping assembly 240 is not limited, and may be one or more.

[0052] In addition, in a preferred embodiment, see Figure 3 A slider 243 is provided on the side of the bottom plate 241 away from the clamping column 242, and a slide rail is provided on the base plate 210. The slide rail is arranged along the diagonal extending direction, and the slider 243 is slidably connected to the slide rail. The first rack 230 can drive the clamping assembly 240 to move only along the diagonal of the base plate 210, avoiding the first rack 230 from floating greatly when moving.

[0053] More specifically, regarding the structure of the clamping column 242, Figure 6 As shown, the outer peripheral surface of the clamping column 242 is designed to be inclined, that is, the diameter of the clamping column 242 gradually decreases from the end of the clamping column 242 away from the substrate 210 toward the substrate 210, so that the clamping column 242 can clamp the consumable plate more reliably, and on this basis, the outer wall of the clamping column 242 has a plurality of teeth 2421 arranged in sequence along the axial direction of the clamping column 242, and each tooth 2421 has an inclined surface inclined relative to the horizontal plane. For example, in Figure 6 In the embodiment shown in , the inclination angle of the inclined surface relative to the horizontal plane is 60°. Of course, it can be understood that the inclination angle of the inclined surface relative to the horizontal plane is not limited to 60°, and can also be other angles, which are not limited here. In this way, by designing the clamping column 242 as the structure of the above embodiment, when the clamping column 242 clamps the consumable plate, the teeth 2421 can be closely matched with the consumable plate, thereby preventing the consumable plate from falling off.

[0054] It can be seen that the clamping mechanism 200 provided in the present application, through a series of gear rack transmission, on the one hand, can effectively amplify the limited pulling force of the pulling and toggling assembly 250, thereby ensuring the clamping strength and uniform clamping force of the clamping assembly 240, and avoiding damage to the consumable plate due to excessive clamping force; and realizes the conversion of complex diagonal contraction movement into simple and labor-saving linear movement along the edge of the substrate 210, thereby providing a more convenient and reliable solution for clamping consumable plates for automated workstations in medical experiments; on the other hand, by designing teeth 2421 on the clamping column 242, the clamping column 242 can firmly clamp the consumable plate containing reagents, effectively preventing the consumable plate from falling off due to loose clamping when the clamping mechanism 200 clamps the consumable plate at high speed.

[0055] Finally, it should be noted that the various technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A clamping mechanism, characterized in that: include: substrate; A first gear, rotatably disposed at the center of the base plate; Two first racks are arranged at intervals along the radial direction of the first gear and are antisymmetrically meshed with the first gear with the center point of the first gear as the symmetry center, each of the first racks is connected to a clamping assembly, and the two clamping assemblies are arranged on the substrate at intervals along a diagonal line of the substrate; A toggle assembly is connected to one of the first racks through a transmission assembly. The toggle assembly can move relative to the substrate along the direction of one of the edges of the substrate under the action of an external force, so as to drive one of the first racks to move along the direction of the diagonal extension through the transmission assembly. In response to the movement of one of the first racks, the first gear can rotate around its own central axis and drive the other first rack to move in the opposite direction along the direction of the diagonal extension, so that the two clamping assemblies can move closer to or farther away from each other.

2. The clamping mechanism according to claim 1, characterized in that: The transmission assembly comprises: a second gear, spaced apart from the first gear; a second rack fixedly connected to one of the first racks, the first rack having a first meshing edge meshing with the first gear, the second rack having a second meshing edge disposed opposite to the first meshing edge, the second meshing edge meshing with the second gear; The third rack is fixedly connected to the toggle assembly, and the third rack has a third meshing edge, and the third meshing edge is meshed with the second gear.

3. The clamping mechanism according to claim 2, characterized in that: The second gear includes a first meshing wheel and a second meshing wheel which are coaxially connected, the wheel diameter of the first meshing wheel is smaller than the wheel diameter of the second meshing wheel, the second meshing edge meshes with the first meshing wheel, and the third meshing edge meshes with the second meshing wheel.

4. The clamping mechanism according to claim 2, characterized in that: Any edge of the substrate forms an angle of 45° with the diagonal line of the substrate, the first meshing edge and the second meshing edge are parallel to each other, and the third meshing edge forms an angle of 45° with both the first meshing edge and the second meshing edge.

5. The clamping mechanism according to claim 1, characterized in that: The toggle assembly is connected to the base plate via an elastic element, and the elastic element is configured to provide an elastic force for automatically resetting the toggle assembly and driving the two clamping assemblies to move closer to each other when the toggle assembly moves and drives the two clamping assemblies to move away from each other.

6. The clamping mechanism according to claim 1, characterized in that: The first rack is provided with a waist-shaped hole extending in the direction of the diagonal line, and the base plate is provided with a limit column, which passes through the waist-shaped hole. The limit column is configured to abut against the hole walls at opposite ends of the waist-shaped hole when the first rack moves in the direction of the diagonal line to limit the movement range of the first rack.

7. The clamping mechanism according to claim 1, characterized in that: The first gear, the first rack, the transmission assembly and the toggle assembly are arranged on one side of the substrate along its own thickness direction, and the clamping assembly includes a base plate and a clamping column, the base plate is connected to the first rack, and the clamping column is connected to the base plate and is located on the other side of the substrate in its own thickness direction.

8. The clamping mechanism according to claim 7, characterized in that: A sliding block is provided on one side of the bottom plate away from the clamping column, a sliding rail is provided on the base plate, the sliding rail is arranged along the direction in which the diagonal line extends, and the sliding block is slidably connected to the sliding rail.

9. The clamping mechanism according to claim 7, characterized in that: The diameter of the clamping column gradually decreases in a direction from the end of the clamping column away from the substrate toward the substrate; And / or, the outer wall of the clamping column has a plurality of teeth arranged in sequence along the axial direction of the clamping column, and each of the teeth has an inclined surface inclined relative to a horizontal plane.

10. An automated workstation, characterized in that: It comprises a base and a clamping mechanism as described in any one of claims 1 to 9, wherein the clamping mechanism is arranged on the base.

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