Full-automatic DNA extraction device

Abstract

The utility model provides a full-automatic DNA extraction device. The full-automatic DNA extraction device comprises a workbench, a consumable plate, a pipetting mechanism, a purification mechanism, a heating mechanism, a separation mechanism, a centrifugal mechanism, a film coating mechanism and a moving mechanism, the consumable plate, the pipetting mechanism, the purifying mechanism, the heating mechanism, the separating mechanism, the film coating mechanism and the moving mechanism are arranged above the workbench, and the centrifugal mechanism is arranged below the workbench; the purification mechanism is arranged on one side of the workbench, the film covering mechanism is correspondingly arranged on the other side of the workbench, and the consumable plate is placed between the purification mechanism and the film covering mechanism; the moving mechanism comprises a first moving unit and a second moving unit; the first moving unit is arranged on the workbench, and the second moving unit is arranged on the first moving unit and is in sliding connection with the workbench through a sliding frame; and the pipetting mechanism is arranged on the second moving unit. According to the method, the sample can be automatically processed in a whole process or a single process, the DNA extraction efficiency is improved, and sample pollution is reduced. And through a special matrix layout design, the space volume is reduced.

Description

Technical Field

[0001] This application belongs to the field of DNA technology, and particularly relates to a fully automatic DNA extraction device. Background Art

[0002] In the process of DNA detection using detection equipment, some mechanisms are required to purify and pipette samples to extract DNA samples for detection. Currently, the equipment for purifying and pipetting samples often has a relatively complex structure, occupies a large space, and many steps may also require manual participation, which affects the extraction efficiency and the accuracy of experimental results. Summary of the Utility Model

[0003] The purpose of this application is to provide a fully automatic DNA extraction device to solve the technical problem of how to automatically process samples throughout the whole process.

[0004] In a first aspect, this application provides a fully automatic DNA extraction device, including a workbench, a consumable plate, a pipetting mechanism, a purification mechanism, a heating mechanism, a separation mechanism, a centrifugation mechanism, a film covering mechanism, and a moving mechanism; the consumable plate, the pipetting mechanism, the purification mechanism, the heating mechanism, the separation mechanism, the film covering mechanism, and the moving mechanism are arranged above the workbench, and the centrifugation mechanism is arranged below the workbench; the purification mechanism is arranged on one side of the workbench, the film covering mechanism is correspondingly arranged on the other side of the workbench, and the consumable plate is placed in the middle of the purification mechanism and the film covering mechanism; the moving mechanism includes a first moving unit and a second moving unit; the first moving unit is arranged on the workbench, the second moving unit is arranged on the first moving unit and is slidably connected to the workbench through a sliding frame; and the pipetting mechanism is arranged on the second moving unit.

[0005] In a first implementation manner of the first aspect, the pipetting mechanism includes a pipettor and a pipetting driving motor; the pipetting driving motor drives the pipettor to move up and down.

[0006] In a first implementation manner of the first aspect, the pipettor is a multi-channel pipetting gun, and each channel of the pipetting gun is provided with a corresponding channel driving motor, and each channel driving motor drives the pipetting gun of the corresponding channel to move up and down.

[0007] In a first implementation manner of the first aspect, a clamping mechanism is further arranged on the second moving unit, and the clamping mechanism includes a clamp and a clamping driving motor; the clamping driving motor drives the clamp to move up and down.

[0008] In an implementation of the first aspect, the first moving unit includes a first moving drive motor and a mounting plate. The first moving unit is fixedly mounted on the workbench through the mounting plate, and the second moving unit is driven by the first moving drive motor to move in a first direction.

[0009] In an implementation of the first aspect, a sliding groove is provided on the workbench, and sliding feet are provided at the bottom end of the sliding frame. When the first moving unit drives the second moving unit to move in the first direction, the sliding frame slides in the sliding groove in the first direction through the sliding feet.

[0010] In an implementation of the first aspect, the second moving unit includes a second moving drive motor, and the second moving unit drives the liquid transfer clamping and lifting module to move in a second direction through the second moving drive motor.

[0011] In an implementation of the first aspect, the first direction and the second direction are perpendicular to each other.

[0012] In an implementation of the first aspect, the purification mechanism includes a purification workbench, a purification mounting seat is provided on the purification workbench, the purification mounting seat is perpendicular to the consumable plate, and a rotation module is provided under the purification mounting seat. After the purification mounting seat rotates 90 degrees through the rotation module, it is in the same direction as the consumable plate.

[0013] In an implementation of the first aspect, the film covering mechanism includes a film covering unit and a film covering moving unit. The film covering unit is moved to a specified area through the film covering moving unit to perform film covering treatment on the consumable plate in the specified area.

[0014] As described above, the fully automatic DNA extraction device of the present application has the following beneficial effects: The present application can automatically process samples throughout the process to extract DNA, reducing manual processing links, improving DNA extraction efficiency, and reducing contamination and interference with samples. Moreover, each part in the fully automatic DNA extraction device provided by the present application is independent and can be used automatically in a single process, further improving practicality. In addition, through a special matrix layout design of the workbench of the present application, the required space volume of the workbench is further reduced. Description of the Drawings

[0015] Figure 1 It shows a schematic structural diagram of a fully automatic DNA extraction device described in an embodiment of the present application.

[0016] Figure 2 It shows a schematic structural diagram of a fully automatic DNA extraction device described in an embodiment of the present application.

[0017] Figure 3 It shows an assembly schematic diagram of a second moving unit and a pipetting clamping and lifting module according to an embodiment of the present application.

[0018] Figure 4 It shows a structural schematic diagram of a pipetting lifting component according to an embodiment of the present application.

[0019] Figure 5 It shows a structural schematic diagram of a purification mechanism according to an embodiment of the present application.

[0020] Figure 6 It shows an assembly schematic diagram of a purification mounting seat and a rotation module according to an embodiment of the present application.

[0021] Figure 7 It shows a structural schematic diagram of a rotation module according to an embodiment of the present application.

[0022] Figure 8 It shows a structural schematic diagram of a film covering mechanism according to an embodiment of the present application.

[0023] Description of component numbers

[0024] 1 Workbench

[0025] 11 Sliding groove

[0026] 2 Consumable plate

[0027] 3 Purification mechanism

[0028] 31 Purification workbench

[0029] 311 Purification mounting seat

[0030] 32 Rotation module

[0031] 4 Film covering mechanism

[0032] 41 Film covering unit

[0033] 42 Film covering moving unit

[0034] 5 Moving mechanism

[0035] 51 First moving unit

[0036] 511 Mounting plate

[0037] 52 Second moving unit

[0038] 6 Pipetting mechanism

[0039] 61 Pipettor

[0040] 62 Pipetting drive motor

[0041] 63-channel drive motor

[0042] 7 clamping mechanism

[0043] 53 sliding carriage

[0044] 531 sliding foot Detailed implementation manners

[0045] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0046] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. Therefore, only the components related to the present application are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0047] In addition, in the present application, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0048] The following embodiments of the present application provide a fully automatic DNA extraction device, which solves the technical problem of how to safely realize the air circulation flow inside and outside the experimental cabin.

[0049] The following will elaborate in detail on the principle and implementation manner of a fully automatic DNA extraction device of this embodiment, so that those skilled in the art can understand the fully automatic DNA extraction device of this embodiment without creative labor.

[0050] Such as Figures 1 to 2As shown in the figure, this embodiment provides a fully automatic DNA extraction device, which includes a workbench 1, a consumable plate 2, a liquid transfer mechanism 6, a purification mechanism 3, a heating mechanism, a separation mechanism, a centrifugation mechanism, a film covering mechanism 4 and a moving mechanism 5; the consumable plate 2, the liquid transfer mechanism 6, the purification mechanism 3, the heating mechanism, the separation mechanism, the film covering mechanism and the moving mechanism 5 are arranged above the workbench 1, and the centrifugation mechanism is arranged below the workbench 1;

[0051] The purification mechanism 3 is arranged on one side of the workbench 1, the film covering mechanism 4 is correspondingly arranged on the other side of the workbench 1, and the consumable plate 2 is placed in the middle of the purification mechanism 3 and the film covering mechanism 4.

[0052] Furthermore, the moving mechanism 5 includes a first moving unit 51 and a second moving unit 52; the first moving unit 51 is arranged on the workbench 1, and the second moving unit 52 is arranged on the first moving unit 51 and is slidably connected to the workbench 1 through a sliding frame 53.

[0053] Furthermore, please continue to refer to Figure 1 and Figure 3 As shown in the figure, the liquid transfer mechanism 6 is arranged on the second moving unit 52.

[0054] Please continue to refer to Figures 1, Figure 3 and Figure 4 As shown in the figure, the liquid transfer mechanism 6 includes a pipettor 61 and a liquid transfer driving motor 62, and the liquid transfer driving motor 62 drives the pipettor 61 to move up and down.

[0055] Furthermore, the pipettor 61 is a multi-channel pipette. Among them, each channel of the pipette is provided with a corresponding channel driving motor 63, and each of the channel driving motors 63 drives the pipette of the corresponding channel to move up and down independently.

[0056] In some embodiments, please continue to refer to Figure 4 As shown in the figure, the pipettor 61 is an eight-channel pipette, and eight channels are all provided with channel driving motors 63 to realize the independent local movement of the pipette. In this way, the liquid transfer lifting component 61 can quickly descend through the liquid transfer driving motor 62, and then according to the need, the channel driving motor 63 of the corresponding channel drives the pipette of this channel to accurately descend to the set height.

[0057] As described above, the fully automatic DNA extraction device provided by the embodiment of the present application is provided with a liquid transfer mechanism 6, which realizes the overall lifting movement of the pipettor 61 and the independent lifting movement of the pipettes of each channel through two-stage lifting drive, and further realizes the independent extraction or injection of liquid, so as to meet various sample processing requirements and has high practicability.

[0058] Please continue to refer toFigure 1 As shown, a clamping mechanism 7 is further provided on the second moving unit 52. The clamping mechanism 7 includes a gripper and a clamping drive motor; the clamping drive motor drives the gripper to move up and down.

[0059] Furthermore, the gripper includes a clamping drive and jaws. The jaws are connected to the clamping drive. When the clamping drive motor drives the gripper to move up and down to a specified height, the jaws are driven by the clamping drive to clamp inward to hold the consumable plate for movement.

[0060] In some embodiments, the clamping drive motor may include a primary clamping drive motor and a secondary clamping drive motor. The primary clamping drive motor drives the whole clamping mechanism 7 to rapidly descend. When it descends to the specified height, the secondary clamping drive motor is then used to drive the gripper to accurately descend a small distance until the jaws are distributed on both sides of the sample. At this time, the clamping drive can drive the jaws to clamp, and the two jaws clamp the experimental sample inward, thereby realizing the stable clamping of the sample.

[0061] Furthermore, two first mounting holes are provided on the jaws, and the jaws are connected to the clamping driver through the two first mounting holes.

[0062] Therefore, in the full-automatic DNA extraction device provided in the above embodiments of the present application, a clamping mechanism 7 is provided. The clamping mechanism 7 realizes the overall lifting movement of the clamping mechanism 7 and the independent secondary lifting movement of the gripper through two-stage lifting drive, so as to be able to adapt to different heights and meet the diversified sample processing requirements, and also has high practicability.

[0063] Furthermore, in the present application, the liquid transfer mechanism 6 and the clamping mechanism 7 are integrally arranged, and at the same time, different drive modules are used to respectively realize the independent two-stage lifting of the liquid transfer mechanism 6 and the independent two-stage lifting of the clamping mechanism 7. While reducing the space volume of the workbench, it also meets the separate process requirements of liquid transfer or clamping.

[0064] Please continue to refer to Figure 1 and Figure 2 As shown, the first moving unit 51 includes a first moving drive motor (not shown) and a mounting plate 511. The first moving unit 51 is fixedly installed on the workbench 1 through the mounting plate 511, and the second moving unit 51 is driven by the first moving drive motor to move in a first direction.

[0065] Further, a sliding groove 11 is provided on the workbench 1, and sliding feet 531 are provided at the bottom end of the sliding frame 53. When the first moving unit 51 drives the second moving unit 52 to move in the first direction, the sliding frame 53 slides in the sliding groove 11 in the first direction through the sliding feet 531.

[0066] As Figure 1 and Figure 2 shown, one end of the sliding frame 53 is connected to the second moving unit 52, and the other end is connected to the workbench 1. Also, since the second moving unit 52 moves through the first moving unit 51, when the first moving drive motor of the first moving unit 51 starts and the first moving unit 51 moves the second moving unit 52 in the first direction, at this time, the sliding frame 53 also slides in the sliding groove 11 in the first direction through the sliding feet 531.

[0067] Please continue to refer to Figure 1 and Figure 3 shown, the second moving unit 52 includes a second moving drive motor (not shown), and the second moving unit 52 drives the pipetting clamping and lifting module 521 to move in the second direction through the second moving drive motor.

[0068] It should be noted that the first direction and the second direction are perpendicular to each other, so as to realize the free movement of the pipetting mechanism 6 and the clamping mechanism 7 in the X direction and the Y direction.

[0069] Please refer to Figure 1 and 5 shown, the purification mechanism 3 includes a purification workbench 31, and a purification mounting seat 311 is provided on the purification workbench 31. The purification mounting seat 311 is perpendicular to the consumable plate 2.

[0070] Further, please refer to Figure 6 and Figure 7 shown, a rotation module 32 is provided under the purification mounting seat 31. After the purification mounting seat 31 rotates 90 degrees through the rotation module 32, it is in the same direction as the consumable plate.

[0071] In order to further reduce the occupied space volume of the extraction device, through a special matrix layout design in this application, the purification mechanism and the consumable plate are not in a linear position, but are arranged vertically, thereby further reducing the required space volume. And since the pipetting mechanism 6 and the clamping mechanism 7 can move in the first direction and the second direction, after the sample purification is completed, the clamping mechanism 7 can be moved to the consumable plate mounting seat in the middle of the workbench 1 along the first direction or / and the second direction, and the clamping mechanism 7 can be used to achieve lifting movement, so as to realize automatic movement in the X direction, Y direction and Z direction.

[0072] In addition, the purification mechanism in the fully automatic DNA extraction device provided by the embodiments of this application can be used automatically alone.

[0073] In some embodiments, the purification mechanism 3 further includes an extraction component, and the extraction component includes a magnetic rod rack, a stirring rack and a deep well plate. And the extraction component can include two sets of extraction units with the same structure, so as to be able to complete the purification of two sets of samples at the same time, thereby effectively improving the purification efficiency.

[0074] Further, the magnetic rod rack is located above the stirring rack, the magnetic rod rack performs lifting movement through a corresponding lifting module, and the stirring rack can also perform lifting movement through a corresponding lifting module.

[0075] In some embodiments, the lifting module driving the magnetic rod rack and the driving module driving the lifting of the stirring rack have the same structure. Specifically, it includes a motor, a driving wheel, a transmission belt and a driven wheel; the motor drives the driving wheel to rotate, and cooperates with the driven wheel to drive the transmission belt.

[0076] Further. There is a transmission block on the transmission belt, and there is also a magnetic rod rack mounting block on the magnetic rod rack. The magnetic rod rack mounting block is connected to the transmission block, and the transmission belt drives the magnetic rod rack to perform lifting movement through the transmission block.

[0077] It should be noted that the lifting of the stirring rack can refer to the lifting of the aforementioned magnetic rod rack, which will not be elaborated here.

[0078] Specifically, the purification principle of the purification mechanism 3 is as follows: when the magnetic rod rack moves downward, it can be combined with the stirring rack located below. At this time, the magnetic rods on the magnetic rod rack will be inserted into the stirring sleeves on the stirring rack. After the magnetic rod rack and the stirring rack are combined, they will move downward together until the stirring sleeves on the stirring rack are inserted into the deep well plate, so as to realize putting magnetic beads into the deep well plate and complete the stirring action of the stirring sleeves on the magnetic beads and the liquid. After the stirring is completed, at this time, the combined stirring rack and the magnetic rod rack will move upward to withdraw from the deep well plate, and then the magnetic rod rack will continue to move upward to complete the separation from the stirring rack, so as to realize the purification treatment of the corresponding sample.

[0079] In the above embodiments, the magnetic rod holder and the stirring holder can move up and down independently, so that they can be combined or separated as needed, which has high practicability.

[0080] Please refer to Figure 1 and Figure 8 As shown, the film laminating mechanism 4 includes a film laminating unit 41 and a film laminating moving unit 42. The film laminating unit 41 is moved to a specified area by the film laminating moving unit 42 to perform film laminating treatment on the consumable board in the specified area.

[0081] Further, the film laminating moving unit 42 includes a moving driving motor, a moving transmission belt, and two moving plates; the two moving plates are arranged on the moving transmission belt and are respectively located on both sides of the moving driving motor.

[0082] Further, the two moving plates are respectively connected to both sides of the film laminating unit 41, and the moving transmission belt drives the film laminating unit 41 to translate and slide to the specified area through the two moving plates.

[0083] In some embodiments, a consumable board mounting seat to be processed is provided in the specified area. The consumable board can be moved to the specified area through the first moving unit 51 and the second moving unit 52, and is lowered to a specified height through the clamping and lifting member A2 to place the consumable board in the corresponding mounting seat for the film laminating mechanism 4 to perform film laminating treatment.

[0084] In some embodiments, the consumable board can be consumables such as a nucleic acid set plate, a PCR plate, etc. that need to be film-sealed.

[0085] Further, the film laminating unit 4 includes a vacuum pumping device and a film suction plate. The film suction plate is hollow inside, and a plurality of adsorption holes are provided at the bottom. The adsorption holes are arranged in an array.

[0086] In some embodiments, the adsorption holes provided at the bottom of the film suction plate correspond one-to-one to the circular holes on the nucleic acid set plate to be film-sealed.

[0087] In addition, the film laminating mechanism in the fully automatic DNA extraction device provided by the embodiments of the present application can be used independently and automatically.

[0088] Specifically, the film laminating principle of the film laminating unit 41 is as follows: the vacuum pumping device is started under the drive of the driving component, extracts the gas inside the film suction plate, so that the adsorption holes at the bottom of the film suction plate form a negative pressure. At this time, the film suction plate can suck the sealing film in the specified area, and is moved to the consumable board to be processed through the film laminating moving unit 42, and then the sealing film is pressed on the consumable board through downward pressure to form a film pressing treatment.

[0089] In some embodiments, the film covering unit 41 can achieve the film covering effect by heating and pressing the film.

[0090] In other embodiments, the film covering mechanism 4 in the fully automatic DNA extraction device provided by the embodiments of the present application can also perform the film pulling treatment independently. When the consumable plate that has completed the film covering treatment needs to be film pulled after subsequent step processing, the consumable plate is moved and placed again in the designated area at the film covering mechanism 4 and clamped and fixed. Then, the film covering unit 41 is moved to the designated area through the film covering moving unit 42. The vacuum extraction device is started under the drive of the drive component, and the gas inside the film suction plate is extracted, so that a negative pressure is formed in the adsorption holes at the bottom of the film suction plate, and the sealing film on the surface of the consumable plate is sucked, realizing the film pulling function.

[0091] Thus, the film covering mechanism in the fully automatic DNA extraction device provided by the embodiments of the present application can be used independently and automatically. When the film covering unit 41 is moved to the designated area through the film covering moving unit 42, the sealing film in the designated area is sucked through the negative pressure formed in the adsorption holes at the bottom of the film suction plate, and thus the consumable plate is covered with the film, or the sealing film on the consumable plate is sucked through the negative pressure formed in the adsorption holes at the bottom of the film suction plate, thereby performing the film pulling treatment.

[0092] In some embodiments, the fully automatic DNA extraction device provided by the embodiments of the present application further includes a heating mechanism, and the heating mechanism is arranged on the workbench 1 to further reduce the space required by the device. In the PCR experiment, the fully automatic DNA extraction device heats the DNA sample through the heating mechanism to achieve amplification.

[0093] In some embodiments, the fully automatic DNA extraction device provided by the embodiments of the present application further includes a centrifugation mechanism, and the centrifugation mechanism is arranged below the workbench 1 to further reduce the space required by the device. In the PCR experiment, the fully automatic DNA extraction device ruptures the cells of the DNA sample through the centrifugation mechanism.

[0094] In some embodiments, the fully automatic DNA extraction device provided by the embodiments of the present application further includes a separation mechanism, and the separation mechanism is arranged on the workbench 1 to further reduce the space required by the device. In the PCR experiment, the fully automatic DNA extraction device separates the ruptured cells through the separation mechanism, and the separation mechanism can adopt a chemical reagent method to achieve separation.

[0095] In addition, various required consumables, such as deep well plates, reagent tanks, sealing films, stirring plates, magnetic rod plates, etc., can be placed on the workbench 1 in the full-automatic DNA extraction device provided in the above embodiments of the present application. The full-automatic DNA extraction device provided in the present application integrates functions such as purification, pipetting, and film covering, so as to be able to perform various treatments on samples, improve the treatment efficiency of samples, and simplify the structure of the entire sample treatment system.

[0096] In the above embodiment, the full-automatic DNA extraction device provided in the present application can automatically process samples throughout the process to extract DNA, reducing manual processing links, improving the DNA extraction efficiency, and at the same time reducing the contamination and interference of samples. Moreover, the processing mechanisms for pipetting, clamping, purification, and film covering in the full-automatic DNA extraction device provided in the present application are respectively independent and can also be used separately in a single process automatically, further improving the practicability. In addition, the workbench of the present application is designed with a special matrix layout, and the pipetting module and the clamping module are integrated, thereby further reducing the required space volume of the workbench.

[0097] In summary, the utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0098] The descriptions of the processes or structures corresponding to the above respective drawings have their own focuses. For parts not detailed in a certain process or structure, reference can be made to the relevant descriptions of other processes or structures.

[0099] The above embodiments are only illustrative of the principles and effects of the present application and are not used to limit the present application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present application should still be covered by the claims of the present application.

Claims

1. A fully automatic DNA extraction device, characterized in that, It includes a workbench, a consumable plate, a pipetting mechanism, a purification mechanism, a heating mechanism, a separation mechanism, a centrifugation mechanism, a film covering mechanism and a moving mechanism; the consumable plate, the pipetting mechanism, the purification mechanism, the heating mechanism, the separation mechanism, the film covering mechanism and the moving mechanism are arranged above the workbench, and the centrifugation mechanism is arranged below the workbench; The purification mechanism is arranged on one side of the workbench, the film covering mechanism is correspondingly arranged on the other side of the workbench, and the consumable plate is placed in the middle of the purification mechanism and the film covering mechanism; The moving mechanism includes a first moving unit and a second moving unit; the first moving unit is arranged on the workbench, the second moving unit is arranged on the first moving unit and is slidably connected to the workbench through a sliding frame; and The pipetting mechanism is arranged on the second moving unit.

2. The fully automatic DNA extraction device according to claim 1, wherein, The pipetting mechanism includes a pipettor and a pipetting drive motor; the pipetting drive motor drives the pipettor to move up and down.

3. The fully automatic DNA extraction device according to claim 2, characterized in that, The pipettor is a multi-channel pipetting gun, and each channel of the pipetting gun is provided with a corresponding channel drive motor, and each of the channel drive motors drives the pipetting gun of the corresponding channel to move up and down.

4. The fully automatic DNA extraction device according to claim 1, wherein, A clamping mechanism is further arranged on the second moving unit, and the clamping mechanism includes a clamp and a clamping drive motor; the clamping drive motor drives the clamp to move up and down.

5. The fully automatic DNA extraction device according to claim 1, wherein The first moving unit includes a first moving drive motor and a mounting plate, and the first moving unit is fixedly installed on the workbench through the mounting plate, and the second moving unit is driven by the first moving drive motor to move in a first direction.

6. The fully automatic DNA extraction device according to claim 5, wherein, A sliding groove is arranged on the workbench, and a sliding foot is arranged at the bottom end of the sliding frame. When the first moving unit drives the second moving unit to move in the first direction, the sliding frame slides in the sliding groove in the first direction through the sliding foot.

7. The fully automatic DNA extraction device according to claim 5, characterized in that, The second moving unit includes a second moving drive motor, and the second moving unit drives a pipetting and clamping lifting module to move in a second direction through the second moving drive motor.

8. The fully automatic DNA extraction device according to claim 7, wherein, The first direction and the second direction are perpendicular to each other.

9. The fully automatic DNA extraction device according to claim 1, wherein The purification mechanism includes a purification workbench, a purification mounting seat is arranged on the purification workbench, the purification mounting seat is perpendicular to the consumable plate, and a rotation module is arranged under the purification mounting seat, and the purification mounting seat rotates 90 degrees through the rotation module to be in the same direction as the consumable plate.

10. The fully automatic DNA extraction device according to claim 1, wherein, The film covering mechanism includes a film covering unit and a film covering moving unit, and the film covering unit is moved to a specified area through the film covering moving unit to perform film covering treatment on the consumable plate in the specified area.

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