Platform assembly and online sampling device

Abstract

The utility model discloses a platform assembly and an online sampling device, and relates to the technical field of lithium battery processing, and the platform assembly comprises a platform main body, a movable plate and two material pressing mechanisms; the two material pressing mechanisms are arranged on the platform main body at intervals, are provided with material pressing gaps through which to-be-sampled materials pass, and are used for pressing the to-be-sampled materials on the platform main body; and the movable plate can movably extend out of the platform main body, is mounted on the platform main body and is positioned between the two material pressing mechanisms. By means of the design, materials to be sampled can be sampled conveniently, and after sampling is completed, the sample materials on the movable plate can be taken out for inspection by pulling out the movable plate. By means of the platform assembly, on-line sampling work can be conveniently completed, samples obtained after sampling are conveniently taken out through the movable plate, follow-up tape splicing work can be conveniently carried out, the whole process is simple and convenient, manpower and material resources are effectively saved, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery processing, and in particular to a platform component and an online sampling device. Background Art

[0002] In the lithium battery production industry, especially in the coating process, the first inspection or process inspection must be carried out after coating. The traditional way is to stop the machine first, cut the coated electrode, take out a section of the electrode, and then take it to the punching machine for punching, sampling and weighing. The electrode on the machine is then reconnected with tape and coating continues. This process is relatively cumbersome and complicated, consuming manpower and material resources, and increasing production costs. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a platform component and an online sampling device to simplify the sampling process, save sampling time, save manpower and material resources, and reduce production costs.

[0004] In order to achieve the above technical purpose, the present application provides a platform assembly, including a platform body, a movable plate and two pressing mechanisms;

[0005] The two material pressing mechanisms are arranged on the platform body at intervals and are provided with a material pressing gap for the material to be sampled to pass through, so as to press the material to be sampled onto the platform body;

[0006] The movable plate is installed on the platform body so as to be movably extended from the platform body and is located between the two material pressing mechanisms.

[0007] Furthermore, a drawer slot is provided on the top of the platform body;

[0008] The movable plate is slidably mounted on the drawing groove.

[0009] Furthermore, the pressing mechanism includes a pressing rod and a pressing driver;

[0010] The pressing rod is movably arranged above the platform body, and the pressing gap is formed between the pressing rod and the platform body;

[0011] The pressing drive is connected to the pressing rod and is used to drive the pressing rod to move closer to or away from the platform body.

[0012] Furthermore, each of the material pressing mechanisms has two material pressing drivers, which are both fixed to the bottom of the platform body;

[0013] The telescopic rod of the pressing drive extends upwardly from the platform body and is connected with the pressing rod.

[0014] The present application also discloses an online sampling device, including a sampling mechanism and the platform assembly;

[0015] The sampling mechanism is installed on the platform body of the platform assembly and is located between the two material pressing mechanisms of the platform assembly, and is used for sampling the material to be sampled.

[0016] Further, the sampling mechanism is a punching sampling mechanism, including a sampling driver, a connecting piece and a ring-shaped sampling knife;

[0017] The sampling driver is connected to the sampling knife via a connecting piece, and is used to drive the sampling knife to move closer to or away from the platform body.

[0018] Furthermore, it also includes a limiting mechanism;

[0019] The limiting mechanism is connected to the connecting piece and is located in the sampling knife, and can contact and abut against the movable plate of the platform assembly;

[0020] The height of one end of the limiting mechanism that contacts the movable plate is higher than the height of the blade of the sampling knife;

[0021] The limiting mechanism includes a fixed column and a limiting member;

[0022] One end of the fixed column extends into the sampling knife and is connected to the connecting piece;

[0023] The limiting member is installed at the other end of the fixing column.

[0024] Further, it also includes a buffer mechanism;

[0025] The buffer mechanism comprises an elastic member, a guide member and a buffer sheet;

[0026] The guide member is movably sleeved on the fixed column, and the bottom thereof can contact and abut against the limiting member;

[0027] The buffer sheet is connected to the bottom of the guide member;

[0028] The elastic member is connected between the connecting member and the guiding member, and is used to provide an elastic force to the guiding member;

[0029] The height of the end of the buffer sheet in contact with the movable plate in the initial state is lower than the height of the end of the stopper in contact with the movable plate;

[0030] The height of one end of the buffer sheet in contact with the movable plate in an initial state is lower than the height of the blade of the sampling knife, and the height difference between them is less than the thickness of the movable plate;

[0031] The elastic member is a spring, which is sleeved on the fixing column.

[0032] Further, it also includes a moving mechanism;

[0033] The moving mechanism is connected to the sampling mechanism and is used to drive the sampling mechanism to move.

[0034] Furthermore, the moving mechanism includes a mechanism body, a guide column, a slide seat and a moving driver;

[0035] The guide column is fixed on the mechanism body;

[0036] The slide seat is slidably mounted on the guide post;

[0037] The sampling mechanism is fixed on the slide;

[0038] The mobile driver is installed on the mechanism body and connected to the sampling mechanism or the slide seat.

[0039] From the above technical scheme, it can be seen that the platform component designed by the present application is provided with two spaced-apart material pressing mechanisms on the platform body to press the material to be sampled onto the platform body, so as to facilitate the sampling of the material to be sampled. After the sampling is completed, the sample on the movable plate can be taken out for inspection by pulling out the movable plate, and the movable plate is returned after the sample is taken. The platform component can conveniently complete the online sampling work, and the sample after sampling can be conveniently taken out through the movable movable plate, which is also convenient for the subsequent splicing work. The whole process is simple and convenient, effectively saving manpower and material resources and reducing production costs.

[0040] It can be seen from the above technical solutions that the online sampling device designed in the present application includes the above-mentioned platform assembly and sampling mechanism. By adding a sampling mechanism to replace manual sampling, it further saves manpower and material resources, improves sampling efficiency, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0042] Figure 1 A perspective view of a platform assembly provided in the present application;

[0043] Figure 2 A three-dimensional diagram of an online sampling device provided in this application;

[0044] Figure 3 A partial structural cross-sectional view of an online sampling device provided in this application;

[0045] Figure 4 A three-dimensional diagram of a moving mechanism of an online sampling device provided in the present application;

[0046] In the figure: 100, platform assembly; 11, platform body; 12, movable plate; 13, pressing rod; 14, pressing driver; 15, pressing mechanism; 16, drawing slot;

[0047] 200, sampling mechanism; 21, sampling driver; 22, connecting member; 23, limiting mechanism; 231, fixing column; 232, limiting member; 24, buffer mechanism; 241, elastic member; 242, guide member; 243, buffer sheet; 25, sampling knife;

[0048] 300, moving mechanism; 31, mechanism body; 32, slide seat; 33, guide column; 34, moving driver; 341, wheel seat; 342, synchronous belt; 343, pulley; 344, hand crank;

[0049] 400. Materials to be sampled. DETAILED DESCRIPTION

[0050] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection of the embodiments of the present application.

[0051] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0052] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0053] An embodiment of the present application discloses a platform component.

[0054] See also Figure 1 as well as Figure 2 , an embodiment of a platform component provided in the embodiments of the present application includes:

[0055] The platform body 11 , the movable plate 12 and the two pressing mechanisms 15 .

[0056] The two pressing mechanisms 15 are arranged on the platform body 11 at intervals and are provided with a pressing gap for the material 400 to be sampled to pass through, so as to press the material 400 to be sampled onto the platform body 11 .

[0057] The movable plate 12 is installed on the platform body 11 so as to be movable and extend out of the platform body 11, and is located between the two material pressing mechanisms 15. It can be understood that the movable plate 12 can be movable and extend out of the platform body 11 to facilitate the removal of the sample obtained by sampling from the platform body 11, so as to facilitate the acquisition of the sample. The movable plate 12 can be a cardboard or other board of suitable hardness, without limitation.

[0058] Taking the material 400 to be sampled as a pole piece as an example, when sampling is required, the coating machine stops running, the material 400 to be sampled stops moving, and the two pressing mechanisms 15 are controlled by the control device to press the material 400 to be sampled on the platform body 11, and then the corresponding sampling tool is used to sample the part of the material 400 to be sampled located on the movable plate 12. After the sampling is completed, the movable plate 12 is moved out of the platform body 11 to take out the sample. The platform body 11 can be a platform plate, and its bottom is fixed by a corresponding bracket structure, which is not specifically limited.

[0059] It can be seen from the above technical scheme that the platform assembly 100 designed in this application is provided with two spaced-apart material pressing mechanisms 15 on the platform body 11 to press the material 400 to be sampled onto the platform body 11, so as to facilitate sampling of the material 400 to be sampled. After sampling, the sample on the movable plate 12 can be taken out for inspection by pulling out the movable plate 12, and the movable plate 12 is returned after the sample is taken. The platform assembly 100 can conveniently complete the online sampling work, and the sample after sampling can be conveniently taken out through the movable movable plate 12, which is also convenient for the subsequent belt connection work. The whole process is simple and convenient, effectively saving manpower and material resources, and reducing production costs.

[0060] The above is an embodiment of a platform component 100 provided in the embodiment of the present application. The following is an embodiment of a platform component 100 provided in the embodiment of the present application. For details, please refer to Figure 1 as well as Figure 2 .

[0061] Based on the solution of the above embodiment 1:

[0062] Furthermore, if Figure 1 As shown, a drawing groove 16 is provided on the top of the platform body 11, and the movable panel 12 is slidably installed on the drawing groove 16. The drawing groove 16 is used to provide a movable guide for the movable panel 12, so as to achieve stable movement of the movable panel 12. The drawing groove 16 may have an opening at only one end so that one end of the movable panel 12 can be stretched out, or it may have openings at both ends so that the movable panel 12 can be drawn in both directions. Of course, it is also possible to implement without providing the drawing groove 16, for example, the movable panel 12 is directly movably provided on the platform body 11. In comparison, the method of providing the drawing groove 16 is more convenient.

[0063] Furthermore, if Figure 1 As shown, the design of the pressing mechanism 15 includes a pressing rod 13 and a pressing driver 14. The pressing rod 13 is movably arranged above the platform body 11 and forms a pressing gap with the platform body 11. The pressing driver 14 is connected to the pressing rod 13 and is used to drive the pressing rod 13 to move closer to or away from the platform body 11 so as to press the sampled material 400 when needed.

[0064] Furthermore, each pressing mechanism 15 has two pressing drivers 14 , which are both fixed at the bottom of the platform body 11 ; the pressing driver 14 can be a telescopic cylinder or an electric push rod, etc., without limitation.

[0065] The telescopic rod of the pressing drive 14 extends upwardly out of the platform body 11 and is connected to the pressing rod 13 , and drives the pressing rod 13 to move up and down through the telescopic movement to press the material 400 to be sampled.

[0066] like Figures 2 to 4 As shown, the present application also discloses an online sampling device, including a sampling mechanism 200 and a platform assembly 100 .

[0067] The sampling mechanism 200 is installed on the platform body 11 of the platform assembly 100 and is located between the two material pressing mechanisms 15 of the platform assembly 100 , and is used to sample the material 400 to be sampled.

[0068] Further, for the design of the sampling mechanism 200, it can be designed as a punching sheet sampling mechanism 200, specifically including a sampling driver 21, a connecting piece 22, and a ring-shaped sampling knife 25, which is usually used for round sheets. Taking this as an example, the sampling knife 25 can be a circular ring, of course, it can also be a rectangular structure, so that a rectangular sheet can be punched out, or it can be other shapes without limitation; the sampling driver 21 is connected to the sampling knife 25 through the connecting piece 22, and is used to drive the sampling knife 25 to move closer to or away from the platform body 11. The sampling driver 21 can be a telescopic cylinder, which drives the sampling knife 25 to punch the material 400 to be sampled through the connecting piece 22, so as to obtain the sample material.

[0069] By adding the sampling mechanism 200 to replace manual sampling, manpower and material resources can be further saved, sampling efficiency can be improved, and production costs can be reduced.

[0070] Furthermore, a limiting mechanism 23 is also included.

[0071] The limiting mechanism 23 is connected to the connecting piece 22 and is located in the sampling knife 25, and can contact and abut against the movable plate 12 of the platform assembly 100; the height of one end of the limiting mechanism 23 that contacts and abuts against the movable plate 12 is higher than the height of the blade of the sampling knife 25, and the height difference between the two is less than the thickness of the movable plate 12. It can be understood that the blade of the sampling knife 25 is below the limiting mechanism and forms a height difference with the limiting mechanism that is less than the thickness of the movable plate 12; under this design, the limiting mechanism can prevent the sampling knife 25 from cutting too deep, so as to avoid cutting through the movable plate 12 and then cutting the knife onto the platform body 11 and damaging the blade.

[0072] The limiting mechanism 23 is designed to include a fixing column 231 and a limiting member 232 .

[0073] One end of the fixed column 231 extends into the sampling knife 25 and is connected to the connecting member 22, and the limiting member 232 is installed at the other end of the fixed column 231. The fixed column 231 plays a role of fixed connection, while the limiting member 232 plays a role of contact limiting. Under this design, the limiting member 232 and the fixed column 231 can be detachably connected, so that the limiting height can be changed by replacing different limiting members 232. For example, by replacing limiting members 232 of different thicknesses, the overall length of the limiting mechanism 23 can be changed, thereby changing the limiting height. The limiting member 232 can be, for example, a bolt, and the change of the limiting height can be achieved by using bolts with different head thicknesses.

[0074] Furthermore, a buffer mechanism 24 is included.

[0075] The buffer mechanism 24 includes an elastic member 241 , a guide member 242 and a buffer sheet 243 .

[0076] The guide member 242 is movably mounted on the fixed column 231, and the bottom can contact and resist the limiting member 232, that is, it is limited by the limiting member 232 and cannot fall out of the fixed column 231. At this time, the limiting member 232 also plays a role in preventing the guide member 242 from falling out. Of course, other limiting structures can be added to prevent the guide member 242 from falling out of the fixed column 231 without restriction.

[0077] The buffer sheet 243 is connected to the bottom of the guide member 242. The buffer sheet 243 is made of soft materials such as foam and adheres to the bottom of the guide member 242. The elastic member 241 is connected between the connecting member 22 and the guide member 242 to provide the guide member 242 with elastic force.

[0078] The height of the end of the buffer sheet 243 in contact with the movable plate 12 in the initial state is lower than the height of the end of the stopper 232 in contact with the movable plate 12, and the height of the end of the buffer sheet 243 in contact with the movable plate 12 in the initial state is lower than the blade height of the sampling knife 25. It can be understood that the lower end of the buffer sheet 243 is below the stopper 232, and the lower end of the buffer sheet 243 is below the blade of the sampling knife 25. Under this design, when the sampling driver 21 drives the sampling knife 25 to move downward for punching sampling, the buffer sheet 243 first contacts the material 400 to be sampled, pressing the material 400 to be sampled on the movable plate 12, and then the buffer sheet 243 squeezes the guide member 242 to compress the elastic member 241, and the sampling knife 25 continues to move to contact the material 400 to be sampled, cutting the material 400 to be sampled into pieces. When the stopper 232 contacts the movable plate 12, the sampling knife 25 will no longer move. As the material taking driver drives the connecting member 22 to move upward, the sampling knife 25 is reset, and the compressed elastic member 241 extends again to drive the guide member 242 and the buffer sheet 243 to move downward, pushing the cut sample out of the sampling knife 25 and dropping it onto the movable plate 12.

[0079] The buffer mechanism 24 of this design not only plays a certain buffering role, but also can push the sample obtained by punching out of the sampling knife 25 to fall on the movable plate 12.

[0080] The elastic member 241 of the present application can be designed as a compression spring, which is specifically sleeved on the fixed column 231 to provide a more stable elastic force. One end of the elastic member 241 contacts and abuts against the guide member 242, and the other end contacts and abuts against the stop structure on the connecting member 22 or the fixed column 231 to provide the elastic force.

[0081] Furthermore, a moving mechanism 300 is included, and the moving mechanism 300 is connected to the sampling mechanism 200 and is used to drive the sampling mechanism 200 to move, so that sampling work can be completed at different positions, thereby improving applicability.

[0082] Furthermore, the design of the moving mechanism 300 includes a mechanism body 31 , a guide column 33 , a slide seat 32 and a moving driver 34 .

[0083] The guide post 33 is fixed on the mechanism body 31, the slide 32 is slidably mounted on the guide post 33, and the sampling mechanism 200 is fixed on the slide 32. The cooperation between the slide 32 and the guide post 33 improves the movement stability of the sampling mechanism 200.

[0084] The moving driver 34 is installed on the mechanism body 31 and connected to the sampling mechanism 200 or the slide 32 to drive the sampling mechanism 200 to move.

[0085] The mechanism body 31 may include two fixed blocks, which are arranged above the two ends of the platform body 11 and supported and fixed by corresponding supporting structures. There may be two guide pillars 33, which are arranged at intervals on the two fixed blocks. The slide seat 32 is provided with guide holes for the guide pillars 33 to move through, and has an installation cavity for the sampling mechanism 200 to be installed, so as to ensure the sampling operation of the sampling mechanism 200.

[0086] The mobile driver 34 may be an electric screw mechanism, for example, including a rotating motor, a screw, a ball nut and a fixed seat, the screw is pivoted between two fixed seats, the ball nut is sleeved on the screw and fixedly connected to the slide 32 or the sampling mechanism 200, the rotating motor drives the screw to rotate, so as to drive the ball nut to move, and then drive the sampling mechanism 200 to move. Of course, the mobile driver 34 may also be a hand-cranked power mechanism, for example, including a hand crank 344, a synchronous belt 342, a pulley 343 and a wheel seat 341, the pulley 343 is two and pivoted on two wheel seats 341, the synchronous belt 342 is synchronously connected with the two pulleys 343, the slide 32 or the sampling mechanism 200 is connected with the synchronous belt 342 through the belt connector 22, and the hand crank 344 is connected with one of the pulleys 343, and the synchronous belt 342 is driven to move by driving the pulley 343 to rotate, thereby driving the sampling mechanism 200 to move. The design of the mobile driver 34 in the present application is not limited to the above-mentioned method, and those skilled in the art can make appropriate design changes based on this.

[0087] Taking the sampled material 400 as the pole piece as an example, the working process of the sampling device of the design is as follows:

[0088] When sampling is required, the coating machine stops running, the electrode stops moving, and the two pressing rods 13 are controlled to press the electrode against the platform body 11. The two pressing rods 13 can move together or separately.

[0089] Then control the moving mechanism 300 to drive the sampling mechanism 200 to the position where sampling is required, and then control the driving end of the sampling driver 21 to extend. During this process, the buffer sheet 243 first contacts the pole piece and presses the pole piece on the movable plate 12. The buffer sheet 243 is squeezed and compressed, and the blade of the sampling knife 25 contacts the pole piece to cut the pole piece into pieces. When the limit member 232 contacts the pole piece / movable plate 12, the sampling knife 25 will no longer move to ensure that the blade will not cut the platform body 11. At this time, the buffer sheet 243, the guide member 242 and the cut pole piece will move upward a certain distance to compress the elastic member 241.

[0090] Then, the driving end of the sampling driver 21 is controlled to retract, and the sampling knife 25 moves upward. At the same time, the compressed elastic member 241 extends again to drive the guide member 242 and the buffer sheet 243 to move downward, pushing the cut electrode piece out of the sampling knife 25 and dropping it onto the movable plate 12.

[0091] Then control the moving mechanism 300 to drive the sampling mechanism 200 to other places where sampling is required, and repeat the operation. After the sampling is completed, the telescopic end of the pressing driver 14 extends out, driving the pressing rod 13 to no longer press the electrode. Under the influence of tension, the electrode is separated from the platform body 11, and then the movable plate 12 is slowly pulled out from the side, the sample on it is removed, and then the movable plate 12 is put back on the platform body 11. If the electrode on the machine needs to be supplemented with tape, the tape can be affixed and the machine can be restarted.

[0092] The above is a detailed introduction to a platform component and an online sampling device provided by the present application. For a person skilled in the art, according to the concept of the embodiments of the present application, there may be changes in the specific implementation method and the scope of application. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A platform component, characterized in that: It comprises a platform body (11), a movable plate (12) and two material pressing mechanisms (15); The two material pressing mechanisms (15) are arranged at intervals on the platform body (11) and are provided with a material pressing gap for the material (400) to be sampled to pass through, so as to press the material (400) to be sampled onto the platform body (11); The movable plate (12) is installed on the platform body (11) so as to be movable and extend out of the platform body (11), and is located between the two material pressing mechanisms (15).

2. The platform assembly according to claim 1, characterized in that: The top of the platform body (11) is provided with a drawing groove (16); The movable plate (12) is slidably mounted on the drawer groove (16).

3. The platform assembly according to claim 1, characterized in that: The pressing mechanism (15) comprises a pressing rod (13) and a pressing driver (14); The pressing rod (13) is movably arranged above the platform body (11), and forms the pressing gap between the pressing rod and the platform body (11); The pressing drive (14) is connected to the pressing rod (13) and is used to drive the pressing rod (13) to move closer to or away from the platform body (11).

4. The platform assembly according to claim 3, characterized in that: Each of the material pressing mechanisms (15) has two material pressing drivers (14), both of which are fixed to the bottom of the platform body (11); The telescopic rod of the material pressing driver (14) extends upward from the platform body (11) and is connected to the material pressing rod (13).

5. Online sampling device, characterized in that, It comprises a sampling mechanism (200) and a platform assembly (100) according to any one of claims 1 to 4; The sampling mechanism (200) is installed on the platform body (11) of the platform assembly (100) and is located between the two material pressing mechanisms (15) of the platform assembly (100) for sampling the material (400) to be sampled.

6. The online sampling device according to claim 5, characterized in that: The sampling mechanism (200) is a punching sampling mechanism (200), comprising a sampling driver (21), a connecting piece (22) and a ring-shaped sampling knife (25); The sampling driver (21) is connected to the sampling knife (25) via a connecting piece (22) and is used to drive the sampling knife (25) to move closer to or away from the platform body (11).

7. The online sampling device according to claim 6, characterized in that: Also includes a limiting mechanism (23); The limiting mechanism (23) is connected to the connecting member (22) and is located in the sampling knife (25), and can contact and abut against the movable plate (12) of the platform assembly (100); The height of one end of the limiting mechanism (23) that contacts and abuts against the movable plate (12) is higher than the height of the blade of the sampling knife (25); The limiting mechanism (23) comprises a fixing column (231) and a limiting member (232); One end of the fixing column (231) extends into the sampling knife (25) and is connected to the connecting piece (22); The limiting member (232) is installed on the other end of the fixing column (231).

8. The online sampling device according to claim 7, characterized in that: Also includes a buffer mechanism (24); The buffer mechanism (24) comprises an elastic member (241), a guide member (242) and a buffer sheet (243); The guide member (242) is movably mounted on the fixed column (231), and the bottom thereof can contact and abut against the limiting member (232); The buffer sheet (243) is connected to the bottom of the guide member (242); The elastic member (241) is connected between the connecting member (22) and the guiding member (242) and is used to provide an elastic force for the guiding member (242); The height of one end of the buffer sheet (243) in contact with the movable plate (12) in the initial state is lower than the height of one end of the stopper (232) in contact with the movable plate (12); The height of one end of the buffer sheet (243) in contact with the movable plate (12) in the initial state is lower than the height of the blade of the sampling knife (25), and the height difference between them is less than the thickness of the movable plate (12); The elastic member (241) is a spring, which is sleeved on the fixing column (231).

9. The online sampling device according to claim 5, characterized in that: Also includes a moving mechanism (300); The moving mechanism (300) is connected to the sampling mechanism (200) and is used to drive the sampling mechanism (200) to move.

10. The online sampling device according to claim 9, characterized in that: The moving mechanism (300) comprises a mechanism body (31), a guide column (33), a slide seat (32) and a moving driver (34); The guide column (33) is fixed on the mechanism body (31); The slide seat (32) is slidably mounted on the guide post (33); The sampling mechanism (200) is fixed on the sliding seat (32); The mobile driver (34) is installed on the mechanism body (31) and is connected to the sampling mechanism (200) or the slide seat (32).

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