Gland module and molecule detection equipment

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to a gland module and molecular detection equipment, when the gland module is used, a tube body is placed at a tube body placing position on a tube body carrying seat, a tube cover is placed at a tube cover positioning hole in a tube cover carrying seat, and then under the driving of a driving assembly, the tube cover is placed in a tube cover positioning hole in the tube cover carrying seat; the pipe body carrying base and the pipe cover carrying base which are in the separated state are switched to the butt joint state, then the pipe cover and the pipe body are pressed together through the cover pressing assembly, operation is easy, cover pressing efficiency is high, cover pressing consistency is good, and the situation that cover sealing is not tight does not occur easily. The molecule detection equipment with the gland module can improve the detection efficiency and the accuracy of a detection result.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a capping module and a molecular detection device. Background Art

[0002] Polymerase Chain Reaction (PCR) technology is widely used in the field of biology. It is a molecular biology technology used to amplify specific DNA fragments. It can be regarded as a special DNA replication outside the body. The biggest feature of PCR is that it can greatly increase trace amounts of DNA. At present, PCR technology is required in nucleic acid detection. Usually, the PCR reaction needs to be carried out in a PCR tube. After collecting the sample, add the sample solution and system reagents to the PCR tube, then cover it with a lid, and then put the covered PCR tube into the PCR equipment for amplification and fluorescence quantitative detection.

[0003] Conventional PCR tubes have a small volume, usually 0.2ml or 0.5ml. Due to the large number of samples to be tested at one time, PCR tubes on the market are often in the form of row tubes, that is, four or eight PCR tubes are connected in a row, and the tube caps of the row tubes are also in the form of row tubes. At present, PCR tubes are usually capped manually, which is time-consuming, labor-intensive, and inefficient. It is very easy to have loose capping, resulting in sample contamination. Utility Model Content

[0004] The embodiments of the present application provide a capping module and a molecular detection device for solving the technical problems that manual capping of PCR tubes is time-consuming, labor-intensive, inefficient, and prone to loose capping.

[0005] To this end, according to one aspect of the present application, a capping module is provided, including a base plate, a capping assembly, a tube body carrier, a tube cover carrier and a driving assembly;

[0006] The bottom plate is provided with a capping station, the capping assembly is arranged above the capping station, and the capping assembly comprises a pressing head and a lifting drive mechanism for driving the pressing head to move up and down;

[0007] The tube body carrier and the tube cover carrier are slidably arranged on the bottom plate along the same direction, the tube body carrier is provided with a tube body placement position, and the tube cover carrier is provided with a tube cover positioning hole; the driving assembly is connected to the tube body carrier and the tube cover carrier, and is used to drive the tube body carrier and the tube cover carrier to switch between a docking state and a separation state. In the docking state, the tube body carrier is located on the capping station, and the tube cover positioning hole is located directly above the tube body placement position.

[0008] Optionally, an elastic protrusion is convexly provided on the inner wall of the tube cap positioning hole, and the elastic protrusion is used to support the edge of the tube cap placed in the tube cap positioning hole.

[0009] Optionally, the tube cap carrier includes a carrier main body and a carrier plate provided on the carrier main body; in the vertical direction, the position of the carrier plate is higher than the position of the tube placement position; the part of the carrier plate provided with the tube cap positioning hole protrudes from the side of the carrier main body close to the tube carrier, and in the docking state, the tube carrier abuts against the carrier main body.

[0010] Optionally, a support plate extending vertically upward is further provided on the bottom plate, the lifting drive mechanism is provided on the support plate, and the pressing head is located above the capping station and is connected to the lifting drive mechanism.

[0011] Optionally, the drive assembly includes a slide rail, a lead screw motor, a first connecting rod and a second connecting rod. The slide rail is provided on the bottom plate. Both the tube carrier and the tube cap carrier are slidably provided on the slide rail. The lead screw motor is provided on the bottom plate. The lead screw of the lead screw motor is parallel to the slide rail and is screwed to the tube cap carrier. One end of the first connecting rod is hinged to the side surface of the tube cap carrier. One end of the second connecting rod is hinged to the side surface of the tube carrier. The end of the first connecting rod away from the tube cap carrier is hinged to the end of the second connecting rod away from the tube carrier through a pin shaft. A vertically extending chute is provided on the support plate, and the pin shaft is slidably provided in the chute.

[0012] Optionally, the drive assembly includes a drive motor, a lead screw and a guide rail. The guide rail is provided on the bottom plate. Both the tube carrier and the tube cap carrier are slidably provided on the guide rail. The lead screw is rotatably provided on the bottom plate and is parallel to the guide rail. The lead screw has two external threads with opposite helix directions. The tube carrier and the tube cap carrier are respectively screwed to the two external threads with opposite helix directions. The drive motor is provided on the bottom plate and is connected to one end of the lead screw.

[0013] Optionally, a plurality of tubes can be placed side by side at the tube placement position, and a plurality of tube caps can be placed side by side in the tube cap positioning hole. In the docking state, the plurality of tube caps and the plurality of tubes are respectively vertically aligned one by one.

[0014] Optionally, the capping module also includes a tube cap storage bin, in which the tube caps can be stacked and placed, and during the switching of the tube cap carrier between the docking state and the separation state, the top of the tube cap carrier is always in contact with the lower end of the tube cap storage bin, and a discharge port is provided at the lower end of the tube cap storage bin. In the separation state, the tube cap positioning holes are docked with the discharge port, and the tube caps located at the bottom layer of the tube cap storage bin can fall into the tube cap positioning holes.

[0015] Optionally, the tube cover material storage bin comprises two oppositely arranged material bin trough bodies, and the opposite inner sides of the two material bin trough bodies are provided with grooves extending in the vertical direction, and the grooves on the opposite inner sides of the two material bin trough bodies surround and form a accommodating space with upper and lower openings.

[0016] According to another aspect of the present application, a molecular detection device is provided, comprising the capping module as described above.

[0017] The capping module and molecular detection equipment provided by the present application have the beneficial effects that: compared with the prior art, the capping module of the present application drives the tube body carrier and the tube cover carrier to switch between the docking state and the separation state through the driving component. In the separation state, it is convenient to load and unload the tube body carrier and the tube cover carrier respectively. In the docking state, the tube body carrier is located on the capping station, and the tube cover positioning hole is located directly above the tube body placement position. The capping assembly composed of the pressure head and the lifting drive mechanism arranged above the capping station can press the tube cover onto the tube body. When in use, it is only necessary to place the tube body in the tube body placement position on the tube body carrier, and place the tube cover in the tube cover positioning hole on the tube cover carrier, and then, under the drive of the driving component, the tube body carrier and the tube cover carrier in the separation state are switched to the docking state, and then the tube cover and the tube body are pressed together by the capping assembly. The operation is simple, the capping efficiency is high, the capping consistency is good, and it is not easy to have a loose capping situation. The molecular detection device having the capping module can improve the detection efficiency and the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 work.

[0019] in:

[0020] Figure 1 is a structural schematic diagram of a gland module shown in an embodiment of the present application;

[0021] Figure 2 yesFigure 1 Schematic structural diagram of another perspective of the gland module shown;

[0022] Figure 3 Is a schematic cross-sectional structural diagram of the gland module shown in an embodiment of the present application;

[0023] Figure 4 Is a schematic structural diagram of the tube cap carrier in the gland module shown in an embodiment of the present application;

[0024] Figure 5 Is a schematic structural diagram of the gland module shown in an embodiment of the present application after removing the support plate on one side;

[0025] Figure 6 Is a schematic structural diagram of the gland module with a tube cap storage bin shown in an embodiment of the present application;

[0026] Figure 7 Is Figure 6 Schematic cross-sectional structural diagram of the gland module shown.

[0027] Description of main component symbols:

[0028] 100, bottom plate; 101, glanding station; 110, support plate; 111, chute; 120, mounting plate;

[0029] 200, glanding assembly; 210, lifting drive mechanism; 220, pressing head;

[0030] 300, tube body carrier; 301, tube body placement position;

[0031] 400, tube cap carrier; 401, tube cap positioning hole; 4011, elastic protrusion; 410, carrier main body; 420, bearing plate;

[0032] 510, slide rail; 520, lead screw motor; 530, first connecting rod; 540, second connecting rod;

[0033] 600, tube cap storage bin; 610, bin trough body. Detailed implementation manners

[0034] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present application more thorough and comprehensive.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0037] In addition, the terms "first" and "second" 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, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0039] It should also be noted that in the embodiments of the present application, the same reference numerals are used to represent the same components or the same parts. For the same parts in the embodiments of the present application, only one of the parts or components may be marked with a reference numeral in the drawings. It should be understood that the reference numerals are equally applicable to other identical parts or components.

[0040] According to one aspect of the present application, embodiments of the present application provide a gland module, such as Figures 1 - 3As shown in the figure, the capping module includes a bottom plate 100, a capping assembly 200, a tube carrier 300, a tube cap carrier 400, and a driving assembly. A capping station 101 is provided on the bottom plate 100. The capping assembly 200 is disposed above the capping station 101. The capping assembly 200 includes a pressing head 220 and a lifting driving mechanism 210 for driving the pressing head 220 to move up and down. The tube carrier 300 and the tube cap carrier 400 are slidably disposed on the bottom plate 100 in the same direction. A tube placement position 301 for placing and positioning the tube is provided on the tube carrier 300. Exemplarily, positioning holes are provided on the tube placement position 301, and the tube is correspondingly inserted into the positioning holes. A tube cap positioning hole 401 is provided on the tube cap carrier 400, and the tube cap can be placed into the tube cap positioning hole 401. The driving assembly is connected to the tube carrier 300 and the tube cap carrier 400 and is used to drive the tube carrier 300 and the tube cap carrier 400 to switch between a docking state and a separation state ( Figure 3 the state shown in the figure). In the docking state, the tube carrier 300 is located at the capping station 101, and the tube cap positioning hole 401 is directly above the tube placement position 301. At this time, the tube cap placed in the tube cap positioning hole 401 is directly above the tube on the tube placement position 301. The capping assembly 200 provided above the capping station 101 is started, and the pressing head 220 is driven to descend through the lifting driving mechanism 210, so as to press the tube cap in the tube cap positioning hole 401 onto the tube on the tube carrier 300, thereby realizing capping.

[0041] It should be noted that the tubes applicable to this capping module can be multi-tube PCR tubes such as four-tube PCR tubes and eight-tube PCR tubes, and only the shapes and sizes of the tube placement position 301 and the tube cap positioning hole 401 need to be correspondingly changed.

[0042] In the embodiment of the present application, the capping module drives the tube carrier 300 and the tube cap carrier 400 to switch between a docking state and a separation state through the driving assembly. In the separation state, it is convenient to perform loading and unloading operations on the tube carrier 300 and the tube cap carrier 400 respectively. In the docking state, the tube carrier 300 is located at the capping station 101, and the tube cap positioning hole 401 is directly above the tube placement position 301. The capping assembly 200 composed of the pressing head 220 and the lifting driving mechanism 210 provided above the capping station 101 can press the tube cap in the tube cap positioning hole 401 onto the tube on the tube placement position 301. During specific use, only the tube needs to be placed at the tube placement position 301 on the tube carrier 300, the tube cap is placed in the tube cap positioning hole 401 on the tube cap carrier 400, and then under the drive of the driving assembly, the tube carrier 300 and the tube cap carrier 400 in the separation state are switched to the docking state, and then the tube cap and the tube are pressed together through the capping assembly 200. The operation is simple, the capping efficiency is high, the capping consistency is good, and the situation of incomplete capping is not likely to occur.

[0043] In one embodiment, as Figures 3 - 4 shown, an elastic protrusion 4011 protrudes from the inner wall of the cap positioning hole 401. The elastic protrusion 4011 is used to support the edge of the cap placed in the cap positioning hole 401 to prevent the cap from falling out of the cap positioning hole 401.

[0044] It can be understood that the elastic protrusion 4011 can undergo elastic deformation under an external force, so that during the capping process, the cap located in the cap positioning hole 401 can first cross the elastic protrusion 4011 under the action of the pressing head 220 and separate from the cap carrier 400, and then be pressed tightly on the tube body.

[0045] Specifically, the cap positioning hole 401 is a rectangular hole, and elastic protrusions 4011 protrude from opposite sides of the inner wall of the rectangular hole respectively. The two relatively arranged elastic protrusions 4011 jointly support the cap placed in the cap positioning hole 401 to improve the stability of the cap.

[0046] Among them, the elastic protrusion 4011 can be made of materials such as rubber / silicone that can undergo elastic deformation, or can also adopt structures such as spring beads.

[0047] In one embodiment, as Figure 3 and Figure 4 shown, the cap carrier 400 includes a carrier main body 410 and a bearing plate 420 arranged on the carrier main body 410; in the vertical direction, the position of the bearing plate 420 is higher than the position of the tube body placement position 301; the part of the bearing plate 420 provided with the cap positioning hole 401 protrudes from the side of the carrier main body 410 close to the tube body carrier 300. In the docking state, the tube body carrier 300 abuts against the carrier main body 410, and the part of the bearing plate 420 provided with the cap positioning hole 401 is located directly above the tube body placement position 301 on the bearing plate 420. With this setting, when the tube body carrier 300 abuts against the carrier main body 410 of the cap carrier 400, the tube body carrier 300 and the cap carrier 400 are in the docking state, which is convenient for determining the state.

[0048] In one embodiment, as Figures 1 - 3 shown, a vertically extending support plate 110 is further provided on the bottom plate 100. The lifting drive mechanism 210 is arranged on the support plate 110, and the pressing head 220 is located above the capping station 101 and is connected to the lifting drive mechanism 210.

[0049] Preferably, two support plates 110 are provided. The two support plates 110 are respectively arranged on the bottom plate 100 on both sides of the length direction of the slide rail 510, and the tops of the two support plates 110 are connected by a mounting plate 120. The lifting drive mechanism 210 is arranged on the mounting plate 120.

[0050] Specifically, the lifting drive mechanism 210 can adopt a stepper motor in cooperation with a ball screw and a linear guide to achieve high-precision linear motion control; it can also directly adopt an electric cylinder, a pneumatic cylinder, an electric push rod, etc.

[0051] In a specific embodiment, as Figures 1 - 3 and Figure 5 shown, the drive assembly includes a slide rail 510, a lead screw motor 520, a first connecting rod 530, and a second connecting rod 540. The slide rail 510 is disposed on the bottom plate 100. The tube body carrier 300 and the tube cap carrier 400 are both slidably disposed on the slide rail 510. The lead screw motor 520 is disposed on the bottom plate 100. The lead screw of the lead screw motor 520 is parallel to the slide rail 510 and is screwed to the tube cap carrier 400. One end of the first connecting rod 530 is hinged to the side surface of the tube cap carrier 400. One end of the second connecting rod 540 is hinged to the side surface of the tube body carrier 300. The end of the first connecting rod 530 away from the tube cap carrier 400 and the end of the second connecting rod 540 away from the tube body carrier 300 are hinged by a pin shaft. A vertically extending chute 111 is provided on the support plate 110, and the pin shaft is slidably disposed in the chute 111.

[0052] The working principle of this drive assembly is as follows: When the lead screw motor 520 rotates forward, it drives the tube cap carrier 400 to move towards the capping station 101. While the tube cap carrier 400 is moving, through the linkage mechanism formed by the first connecting rod 530 and the second connecting rod 540 in cooperation with the chute 111 on the support plate 110, it drives the tube body carrier 300 to move towards the capping station 101 together, so that the tube body carrier 300 and the tube cap carrier 400 are switched from the separated state to the butt-jointed state. After the capping operation is completed, the lead screw motor 520 rotates reversely, driving the tube cap carrier 400 to move away from the capping station 101. While the tube cap carrier 400 is moving, through the linkage mechanism formed by the first connecting rod 530 and the second connecting rod 540 in cooperation with the chute 111 on the support plate 110, it drives the tube body carrier 300 to move away from the capping station 101 together, so that the tube body carrier 300 and the tube cap carrier 400 are switched from the butt-jointed state to the separated state, which is convenient for loading and unloading the tube cap carrier 400 and the tube body carrier 300.

[0053] Preferably, to improve the movement stability of the tube cap carrier 400 and the tube body carrier 300, two first connecting rods 530 and two second connecting rods 540 are provided, and the two linkage mechanisms thus formed are respectively connected to the opposite sides of the tube cap carrier 400 and the tube body carrier 300 in the movement direction.

[0054] In addition, it can be understood that the lead screw motor 520 of the drive assembly in the embodiment of the present application can also be replaced by an electric cylinder, a pneumatic cylinder or an electric push rod.

[0055] It should be noted that the driving component can be implemented not only by the structure in the above embodiments, but also by other means. In another embodiment (not shown in the figure), the driving component includes a driving motor, a lead screw, and a guide rail. The guide rail is arranged on the bottom plate. The tube body carrier and the tube cap carrier are both slidably arranged on the guide rail. The lead screw is rotatably arranged on the bottom plate and is parallel to the guide rail. There are two sections of external threads with opposite helix directions on the lead screw. The tube body carrier and the tube cap carrier are respectively screwed to the two sections of external threads with opposite helix directions. The driving motor is arranged on the bottom plate and is connected to one end of the lead screw.

[0056] By driving the lead screw to rotate forward / backward by the driving motor, the tube body carrier and the tube cap carrier are driven to move towards or away from each other, so as to realize the switching between the docking state and the separation state of the tube body carrier and the tube cap carrier.

[0057] In one embodiment, as Figures 1 - 3 shown, the tube body placement positions 301 can place multiple tube bodies side by side, and the tube cap positioning holes 401 can place multiple tube caps side by side. In the docking state, multiple tube caps and multiple tube bodies are respectively vertically corresponding to each other one by one. With such a setting, capping of multiple tube bodies and multiple tube caps can be achieved simultaneously in one operation, improving the capping efficiency.

[0058] In one embodiment, as Figures 6 - 7 shown, the capping module further includes a tube cap storage bin 600. The tube caps can be stacked and placed in the tube cap storage bin 600. During the process of the tube cap carrier 400 switching between the docking state and the separation state, the top of the tube cap carrier 400 is always in contact with the lower end of the tube cap storage bin 600. A blanking port is provided at the lower end of the tube cap storage bin 600. In the separation state, the tube cap positioning hole 401 is docked to the blanking port, and the tube cap at the lowermost layer in the tube cap storage bin 600 can fall into the tube cap positioning hole 401.

[0059] With the above setting, automatic cap taking can be realized, and there is no need to manually place the tube caps on the tube cap carrier 400 before each capping operation, further reducing the labor intensity of workers and improving the automation degree of the capping module.

[0060] The capping assembly 200 provided in the embodiments of the present application integrates an automatic cap taking mechanism, and can completely automate actions such as automatic cap taking, automatic capping, and automatic extension, and can truly achieve automation. It can be embedded into the internal part of an automatic instrument, reducing the volume of the overall instrument.

[0061] It should be noted that when the tube body placement positions 301 can place multiple tube bodies side by side and the tube cap positioning holes 401 can place multiple tube caps side by side, correspondingly, multiple columns of tube caps can be stacked and placed side by side in the tube cap storage bin 600 to enable the tube cap positioning hole 401 to take multiple tube caps from the blanking port each time.

[0062] In a specific embodiment, asFigure 6 As shown in Figure 6 , the cap storage bin 600 includes two oppositely arranged bin troughs 610. Grooves extending vertically are provided on the opposite inner sides of the two bin troughs 610, and the grooves on the opposite inner sides of the two bin troughs 610 enclose a vertically open accommodation space. With this setting, the structure is simple and convenient for production and manufacturing.

[0063] Specifically, flanges are respectively provided on the opposite outer sides of the two bin troughs 610, and the two bin troughs 610 are respectively fixed on the two support plates 110 through the outer flanges.

[0064] According to another aspect of the present application, an embodiment of the present application further provides a molecular detection device, and this molecular detection device includes the capping module in any of the above embodiments.

[0065] Since this molecular detection device adopts the capping module in the above embodiment, based on the advantages of high capping efficiency, good capping consistency, and not easily having problems such as incomplete capping of the capping module, the molecular detection device with this capping module can improve the detection efficiency and the accuracy of the detection results.

[0066] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0067] The above embodiments only represent several implementation manners of the present application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A capping module, characterized in that: It comprises a base plate (100), a capping assembly (200), a tube body carrier (300), a tube cover carrier (400) and a driving assembly; A capping station (101) is provided on the bottom plate (100), the capping assembly (200) is arranged above the capping station (101), and the capping assembly (200) comprises a pressing head (220) and a lifting drive mechanism (210) for driving the pressing head (220) to move up and down; The tube body carrier (300) and the tube cover carrier (400) are slidably arranged on the bottom plate (100) in the same direction; a tube body placement position (301) is arranged on the tube body carrier (300), and a tube cover positioning hole (401) is arranged on the tube cover carrier (400); the driving component is connected to the tube body carrier (300) and the tube cover carrier (400), and is used to drive the tube body carrier (300) and the tube cover carrier (400) to switch between a docking state and a separation state; in the docking state, the tube body carrier (300) is located on the capping station (101), and the tube cover positioning hole (401) is located directly above the tube body placement position (301).

2. The capping module according to claim 1, characterized in that: An elastic protrusion (4011) is convexly provided on the inner wall of the tube cover positioning hole (401), and the elastic protrusion (4011) is used to support the edge of the tube cover inserted into the tube cover positioning hole (401).

3. The capping module according to claim 1, characterized in that: The tube cover carrier (400) comprises a carrier body (410) and a bearing plate (420) arranged on the carrier body (410); in the vertical direction, the position of the bearing plate (420) is higher than the position of the tube body placement position (301); the portion of the bearing plate (420) provided with the tube cover positioning hole (401) protrudes from a side of the carrier body (410) close to the tube body carrier (300), and in the docking state, the tube body carrier (300) and the carrier body (410) are butted against each other.

4. The capping module according to claim 1, characterized in that: A support plate (110) extending vertically upward is also provided on the bottom plate (100), the lifting drive mechanism (210) is provided on the support plate (110), and the pressing head (220) is located above the capping station (101) and is connected to the lifting drive mechanism (210).

5. The capping module according to claim 4, characterized in that: The driving assembly comprises a slide rail (510), a lead screw motor (520), a first connecting rod (530) and a second connecting rod (540); the slide rail (510) is arranged on the base plate (100); the tube body carrier (300) and the tube cover carrier (400) are both slidably arranged on the slide rail (510); the lead screw motor (520) is arranged on the base plate (100); the lead screw of the lead screw motor (520) is parallel to the slide rail (510) and is screwed to the tube cover carrier (400); ), one end of the first connecting rod (530) is hinged to the side of the tube cover carrier (400), one end of the second connecting rod (540) is hinged to the side of the tube body carrier (300), one end of the first connecting rod (530) away from the tube cover carrier (400) and one end of the second connecting rod (540) away from the tube body carrier (300) are hinged through a pin shaft, and a vertically extending slide groove (111) is provided on the support plate (110), and the pin shaft is slidably set in the slide groove (111).

6. The capping module according to claim 1, characterized in that: The driving assembly comprises a driving motor, a screw and a guide rail, wherein the guide rail is arranged on the base plate (100), the tube body carrier (300) and the tube cover carrier (400) are both slidably arranged on the guide rail, the screw is rotatably arranged on the base plate (100) and is parallel to the guide rail, the screw has two sections of external threads with opposite rotation directions, the tube body carrier (300) and the tube cover carrier (400) are respectively screwed to the two sections of external threads with opposite rotation directions, and the driving motor is arranged on the base plate (100) and is connected to one end of the screw.

7. The capping module according to claim 1, characterized in that: The tube body placement position (301) can place multiple tube bodies side by side, and the tube cover positioning hole (401) can accommodate multiple tube covers side by side. In the docking state, the multiple tube covers correspond to the multiple tube bodies one by one in the vertical direction.

8. The capping module according to any one of claims 1 to 7, characterized in that: The capping module also includes a tube cap storage bin (600), and the tube caps can be stacked and placed in the tube cap storage bin (600). During the process of switching the tube cap carrier (400) between the docking state and the separation state, the top of the tube cap carrier (400) is always in contact with the lower end of the tube cap storage bin (600), and a discharge port is provided at the lower end of the tube cap storage bin (600). In the separation state, the tube cap positioning holes (401) are docked with the discharge port, and the tube caps located at the bottom layer of the tube cap storage bin (600) can fall into the tube cap positioning holes (401).

9. The capping module according to claim 8, characterized in that: The tube cover material storage bin (600) comprises two oppositely arranged material bin trough bodies (610), and the opposite inner sides of the two material bin trough bodies (610) are provided with grooves extending in the vertical direction, and the opposite inner sides of the two material bin trough bodies (610) are arranged to form a receiving space with upper and lower openings.

10. A molecular detection device, characterized in that: It comprises a gland module as described in any one of claims 1 to 9.

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