PCR tube switch cover device

Abstract

The application provides a PCR test tube opening and closing cover device, and relates to the technical field of molecular biology. The PCR test tube opening and closing cover device comprises a base, a carrier which is slidably arranged on the base and is used for carrying a PCR test tube, a driving assembly which is arranged on the base and has a driving end connected with the carrier, and an opening and closing cover assembly which is arranged on the base and is located on a sliding path of the carrier. The opening and closing cover assembly can separate a tube cover of the PCR test tube from a tube body when the PCR test tube slides forward with the carrier, and can cover the tube cover on the tube body when the PCR test tube slides reversely with the carrier. Compared with manually opening or closing the tube cover, the PCR test tube opening and closing cover device is more labor-saving, can stably open the cover, and is not prone to spilling liquid in the tube.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molecular biology, and particularly relates to a PCR test tube cover opening and closing device. BACKGROUND

[0002] Real-time fluorescent quantitative polymerase chain reaction (PCR) technology can realize quantitative analysis of DNA templates, and has important significance for molecular biology research and medical research.

[0003] In order to prevent cross contamination caused by sample evaporation during the experiment, the PCR test tube needs to be covered with a tube cover for reaction. Therefore, during use, the experimenter needs to open or close the tube cover. In order to ensure the sealing effect, the force of the tube cover and the tube body is relatively large, and it is laborious to manually open or close the tube cover. There is also a risk of liquid splashing in the tube when opening the cover. SUMMARY

[0004] In order to solve the problems in the prior art, the present application aims to provide a PCR test tube cover opening and closing device.

[0005] The present application provides the following technical solutions:

[0006] A PCR test tube cover opening and closing device comprises:

[0007] a base;

[0008] a carrier slidably arranged on the base and used for carrying a PCR test tube;

[0009] a driving assembly arranged on the base, a driving end of the driving assembly being connected with the carrier; and

[0010] a cover opening and closing assembly arranged on the base and located on a sliding path of the carrier, the cover opening and closing assembly being capable of separating a tube cover of the PCR test tube from a tube body when the PCR test tube slides forward with the carrier, and capable of covering the tube cover with the tube body when the PCR test tube slides reversely with the carrier.

[0011] As a further optional solution of the PCR test tube cover opening and closing device, a first sliding groove and a second sliding groove are arranged on the cover opening and closing assembly, the first sliding groove being used for sliding cooperation with at least one side of the tube body, and the second sliding groove being used for sliding cooperation with at least one side of the tube cover.

[0012] The first sliding groove is parallel to the sliding direction of the carrier, the second sliding groove is arranged obliquely relative to the first sliding groove, and a wedge-shaped part is formed between the second sliding groove and the first sliding groove.

[0013] As a further optional solution of the PCR test tube switch cover device, a third sliding groove is further arranged on the switch cover assembly, the third sliding groove is communicated with one end of the second sliding groove away from the first sliding groove, and the third sliding groove is used for storing the tube cover.

[0014] As a further optional solution of the PCR test tube switch cover device, the carrier has a carrying area for carrying the PCR test tube, a pushing member is arranged on the carrier, the pushing member and the carrying area are arranged along the sliding direction of the carrier, and the pushing member is used for pushing the tube cover into the second sliding groove when the carrier reversely slides.

[0015] As a further optional solution of the PCR test tube switch cover device, the carrier has a plurality of carrying areas, and a plurality of pushing members are correspondingly arranged on the carrier, and a plurality of groups of the first sliding groove, the second sliding groove and the third sliding groove are correspondingly arranged on the switch cover assembly.

[0016] As a further optional solution of the PCR test tube switch cover device, at least eight recesses for embedding the tube body are arranged in the carrying area, and the at least eight recesses are arranged along the sliding direction of the carrier, and the PCR test tube is an eight-tube PCR test tube.

[0017] As a further optional solution of the PCR test tube switch cover device, the switch cover assembly comprises a switch cover plate, the switch cover plate is located on the side of the carrier away from the base, a position avoiding groove is arranged on the side of the switch cover plate facing the base, and the first sliding groove and the second sliding groove are arranged on the side walls of the position avoiding groove.

[0018] As a further optional solution of the PCR test tube switch cover device, the first sliding groove and the second sliding groove are arranged on the two side walls of the position avoiding groove.

[0019] As a further optional solution of the PCR test tube switch cover device, the driving assembly comprises a lead screw, a nut seat and a rotary driving member, the lead screw is parallel to the sliding direction of the carrier, is rotationally arranged on the base, the nut seat is sleeved on the lead screw and is connected with the carrier, and the rotary driving member is arranged on the base, and a driving end of the rotary driving member is connected with the lead screw.

[0020] As a further optional solution of the PCR test tube switch cover device, a sliding rail is arranged on the base, the sliding rail is parallel to the sliding direction of the carrier, a sliding block is slidably arranged on the sliding rail, and the sliding block is connected with the carrier.

[0021] The embodiment of the present application has the following beneficial effects:

[0022] When the PCR tube opening and closing cover device is used, the experimenter places the PCR tube on the carrier, and then controls the driving assembly to drive the carrier to slide forward. When the carrier passes through the opening and closing cover assembly, the opening and closing cover assembly separates the tube cover of the PCR tube from the tube body, i.e. opens the tube cover, so as to facilitate the experimenter to add reagent dropwise and the like. Subsequently, the experimenter controls the driving assembly to drive the carrier to slide reversely. When the carrier passes through the opening and closing cover assembly again, the opening and closing cover assembly covers the tube cover with the tube body, i.e. closes the tube cover, so as to prevent the sample from evaporating to cause cross contamination during the experiment. Compared with manually opening or closing the tube cover, the PCR tube opening and closing cover device is more labor-saving, and can stably open the cover and is not easy to cause liquid in the tube to splash out.

[0023] In order to make the above objectives, characteristics and advantages of the present application more apparent and easy to understand, the following preferred embodiments are specifically described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 Fig. 1 shows the overall structure schematic diagram of a PCR tube opening and closing cover device provided by an embodiment of the present application;

[0026] Figure 2 Fig. 2 shows the state schematic diagram of the tube cover of the PCR tube when the tube cover is closed with the tube body;

[0027] Figure 3 Fig. 3 shows the state schematic diagram of the tube cover of the PCR tube when the tube cover is separated from the tube body;

[0028] Figure 4 Fig. 4 shows the state schematic diagram of the PCR tube opening and closing cover device provided by an embodiment of the present application after opening the cover.

[0029] Main element symbol explanation:

[0030] 100 - base; 110 - mounting plate; 111 - sliding rail; 112 - sliding block; 120 - leg; 200 - carrier; 210 - pushing piece; 300 - driving assembly; 310 - screw rod; 320 - rotary driving piece; 400 - opening and closing cover assembly; 410 - opening and closing cover plate; 411 - avoiding slot; 412 - first sliding groove; 413 - second sliding groove; 414 - wedge-shaped part; 415 - third sliding groove; 420 - stand column; 500 - PCR tube; 510 - tube cover; 511 - first connecting plate; 520 - tube body; 521 - second connecting plate. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein like reference numerals identify similar elements or features in the figures. The embodiments described below are merely exemplary and not intended to limit the application as there are many variations of the application which are possible.

[0032] It is to be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. Like reference numerals refer to like elements throughout the specification.

[0033] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In addition, the terms "first", "second", etc. are only used for the purpose of description and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the template herein is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0036] Embodiments

[0037] Please refer to Figure 1The embodiment provides a PCR test tube opening and closing device, which comprises a base 100, a carrier 200, a driving assembly 300 and an opening and closing assembly 400, and the carrier 200, the driving assembly 300 and the opening and closing assembly 400 are arranged on the base 100.

[0038] The carrier 200 is arranged on the base 100 in a sliding mode and is used for carrying a PCR test tube 500.

[0039] The driving end of the driving assembly 300 is connected with the carrier 200, so that the carrier 200 is driven to slide back and forth on the base 100.

[0040] Correspondingly, the opening and closing assembly 400 is located on the sliding path of the carrier 200. When the PCR test tube 500 slides forward with the carrier 200, the opening and closing assembly 400 can separate the tube cover 510 (see Figure 3 ) of the PCR test tube 500 from the tube body 520 (see Figure 3 ). When the PCR test tube 500 slides reversely with the carrier 200, the opening and closing assembly 400 can cover the tube cover 510 and the tube body 520.

[0041] When the PCR test tube opening and closing device is used, an experimenter places the PCR test tube 500 on the carrier 200, and then controls the driving assembly 300 to drive the carrier 200 to slide forward. When the carrier 200 passes through the opening and closing assembly 400, the opening and closing assembly 400 separates the tube cover 510 of the PCR test tube 500 from the tube body 520, that is, the tube cover 510 is opened, so that the experimenter can easily add reagents and the like.

[0042] Subsequently, the experimenter controls the driving assembly 300 to drive the carrier 200 to slide reversely. When the carrier 200 passes through the opening and closing assembly 400 again, the opening and closing assembly 400 covers the tube cover 510 and the tube body 520, that is, the tube cover 510 is closed, so that the sample is prevented from evaporating and causing cross contamination during the experiment.

[0043] Compared with manually opening or closing the tube cover 510, the PCR test tube opening and closing device can save labor and stably open the cover, and liquid in the tube is not easy to splash out.

[0044] Specifically, the base 100 is composed of a mounting plate 110 arranged in a horizontal mode and four supporting legs 120 arranged in a vertical mode. The four supporting legs 120 are respectively located at four top corners of the mounting plate 110, and the top ends of the supporting legs 120 are fixedly connected with the mounting plate 110. The carrier 200, the driving assembly 300 and the opening and closing assembly 400 are arranged on the mounting plate 110.

[0045] In some embodiments, the mounting plate 110 is provided with horizontal slide rails 111 parallel to the sliding direction of the carrier 200. The slide rails 111 are provided with slide blocks 112 sliding thereon, and the slide blocks 112 are connected to the carrier 200.

[0046] In use, the carrier 200 is slidingly arranged on the mounting plate 110 through the slide blocks 112 and the slide rails 111, and the sliding resistance is small, and the sliding process is stable, which is conducive to keeping the PCR test tubes 500 carried by the carrier 200 stable and better preventing liquid in the tubes from splashing out.

[0047] Optionally, the slide rails 111 are arranged in pairs and located below both sides of the carrier 200. Each slide rail 111 is provided with two slide blocks 112, and the two slide blocks 112 are connected to both ends of the bottom surface of the carrier 200 along the sliding direction. At this time, the slide blocks 112 are connected to the four corners of the bottom surface of the carrier 200, and the sliding process is more stable.

[0048] In some embodiments, the carrier 200 has a carrying area for carrying the PCR test tubes 500, and the carrying area is provided with grooves for embedding the tube bodies 520. The experimenter embeds the tube bodies 520 of the PCR test tubes 500 in the grooves, so as to stably place the PCR test tubes 500 on the carrier 200.

[0049] Please refer to Figure 2 and Figure 3 In some specific embodiments of the present embodiment, the PCR test tubes 500 carried by the carrier 200 are PCR octuple tubes, which have eight tube bodies 520 and eight tube caps 510, and the eight tube bodies 520 are sequentially arranged. Each tube cap 510 corresponds to a tube body 520 and covers the corresponding tube body 520.

[0050] In addition, each tube body 520 is provided with a first connecting plate 511, and the eight first connecting plates 511 are integrally formed. Similarly, each tube cap 510 is provided with a second connecting plate 521, and the eight second connecting plates 521 are integrally formed. When the tube cap 510 and the tube body 520 are covered together, the second connecting plate 521 is attached to or gap-fitted with the first connecting plate 511.

[0051] Correspondingly, the carrying area is provided with at least eight grooves, and the at least eight grooves are arranged along the sliding direction of the carrier 200.

[0052] When the carrier 200 passes through the switch cover assembly 400, the switch cover assembly 400 separates or brings together the second connecting plates 521 and the first connecting plates 511, so as to separate or cover the eight tube caps 510 and the corresponding tube bodies 520 in sequence.

[0053] In some embodiments of the present application, the PCR test tube 500 carried by the carrier 200 can also be a PCR single tube, which is composed of only one tube body 520 and one tube cover 510.

[0054] Further, the carrier 200 has a plurality of carrying areas, which can carry a plurality of PCR test tubes 500. The plurality of carrying areas are arranged in a horizontal direction, and the arrangement direction of the plurality of carrying areas is perpendicular to the sliding direction of the carrier 200.

[0055] Correspondingly, when the carrier 200 passes through the switch cover assembly 400, the switch cover assembly 400 can simultaneously open or close the tube cover 510 of each PCR test tube 500.

[0056] Please refer to Figure 1 In some embodiments, the driving assembly 300 is composed of a lead screw 310, a nut seat (not shown in the figure) and a rotary driving member 320.

[0057] The lead screw 310 is parallel to the sliding direction of the carrier 200 and is rotationally arranged on the mounting plate 110. In addition, the lead screw 310 is located between the two slide rails 111.

[0058] The nut seat is sleeved on the lead screw 310 and is fixedly connected with the middle part of the bottom surface of the carrier 200.

[0059] The rotary driving member 320 is fixedly arranged on the mounting plate 110, and the driving end of the rotary driving member 320 is connected with the lead screw 310 as the driving end of the entire driving assembly 300.

[0060] In use, the driving end of the rotary driving member 320 drives the lead screw 310 to rotate, so as to drive the nut seat to move along the lead screw 310, and then drive the carrier 200 to slide back and forth.

[0061] Optionally, the rotary driving member 320 adopts a driving motor, and the shaft of the driving motor is connected with the lead screw 310 through a shaft coupling.

[0062] In other embodiments, the driving assembly 300 can also adopt a pneumatic cylinder, an oil cylinder, etc.

[0063] In some embodiments, the switch cover assembly 400 is composed of a switch cover plate 410 and a stand 420.

[0064] The switch cover plate 410 is arranged horizontally and is located on the side of the carrier 200 away from the base 100. The stand 420 is arranged vertically, the top end of the stand 420 is fixedly connected with the switch cover plate 410, and the bottom end is fixedly connected with the mounting plate 110.

[0065] Please refer to Figure 2 and Figure 3In addition, the switch cover plate 410 is provided with an avoiding groove 411 on one side thereof facing the base 100, and the side wall of the avoiding groove 411 is provided with a first sliding groove 412 and a second sliding groove 413.

[0066] In use, the carrier 200 passes below the switch cover plate 410 under the drive of the driving assembly 300, and the PCR test tube 500 placed on the carrier 200 passes through the avoiding groove 411. In this process, the first connecting plate 511 on at least one side of the tube body 520 is in sliding cooperation with the first sliding groove 412, and the second connecting plate 521 on at least one side of the tube cap 510 is in sliding cooperation with the second sliding groove 413.

[0067] The first sliding groove 412 is parallel to the sliding direction of the carrier 200, and the second sliding groove 413 is located above the first sliding groove 412 and is arranged obliquely relative to the first sliding groove 412. At this time, a wedge-shaped portion 414 is formed between the second sliding groove 413 and the first sliding groove 412.

[0068] When the carrier 200 slides forward and passes below the switch cover plate 410, the PCR test tube 500 moves with the carrier 200 and first contacts the tip of the wedge-shaped portion 414. At this time, the tip of the wedge-shaped portion 414 is clamped between the first connecting plate 511 and the second connecting plate 521.

[0069] With the continuous movement of the PCR test tube 500, the first connecting plate 511 and the second connecting plate 521 gradually separate under the guidance of the wedge-shaped portion 414. The tube body 520 and the first connecting plate 511 on the tube body 520 continue to slide horizontally along the first sliding groove 412, and the tube cap 510 and the second connecting plate 521 on the tube cap 510 slide obliquely upward along the second sliding groove 413. In this way, the tube cap 510 is separated from the tube body 520.

[0070] Conversely, when the carrier 200 slides reversely and passes below the switch cover plate 410, the PCR test tube 500 moves with the carrier 200. In this process, the tube body 520 and the first connecting plate 511 on the tube body 520 slide horizontally along the first sliding groove 412, and the tube cap 510 and the second connecting plate 521 on the tube cap 510 slide obliquely downward along the second sliding groove 413. Finally, the tube cap 510 is again covered on the tube body 520.

[0071] Further, the side wall of the avoiding groove 411 is further provided with a third sliding groove 415, and the third sliding groove 415 is in communication with one end of the second sliding groove 413 away from the first sliding groove 412.

[0072] Please refer to Figure 4When the tube cover 510 is separated from the tube body 520, the second connecting plate 521 slides upward along the second sliding groove 413 and slides into the third sliding groove 415. At this time, the third sliding groove 415 can play a role of storing the tube cover 510, and the experimenter does not need to separately place the separated tube cover 510.

[0073] In addition, when the carrier 200 reversely slides and passes from below the switch cover plate 410, the second connecting plate 521 can be smoothly slid into the second sliding groove 413 only by keeping the tube cover 510 and the tube body 520 synchronous movement, and then the tube cover 510 is again covered on the tube body 520.

[0074] Optionally, the third sliding groove 415 is also parallel to the sliding direction of the carrier 200.

[0075] In some specific embodiments, the carrier 200 is provided with a pushing piece 210, and the pushing piece 210 and the carrying area are arranged along the sliding direction of the carrier 200.

[0076] When the carrier 200 reversely slides and passes from below the switch cover plate 410, the pushing piece 210 abuts against the second connecting plate 521 on the tube cover 510 and pushes the second connecting plate 521 into the second sliding groove 413, thereby ensuring that the tube cover 510 and the tube body 520 keep synchronous movement, which is simple and convenient.

[0077] In another specific embodiment, a driving structure can also be additionally provided on the mounting plate 110 or the switch cover plate 410, and the second connecting plate 521 is pushed into the second sliding groove 413 according to the real-time position of the tube body 520, until one of the tube covers 510 is covered on the corresponding tube body 520. Subsequently, under the traction of the tube cover 510 and the second connecting plate 521, the remaining tube covers 510 and the tube bodies 520 keep synchronous movement and are covered one by one.

[0078] Optionally, the two side walls of the avoiding groove 411 are provided with the first sliding groove 412, the second sliding groove 413 and the third sliding groove 415.

[0079] At this time, the first connecting plate 511 on both sides of the tube body 520 is in sliding cooperation with the first sliding groove 412, and the second connecting plate 521 on both sides of the tube cover 510 is in sliding cooperation with the second sliding groove 413 and the third sliding groove 415 in turn, which can more stably separate or cover the tube cover 510 and the tube body 520.

[0080] It should be noted that when the carrier 200 has a plurality of carrying areas, the pushing piece 210 is also correspondingly provided with a plurality of pushing pieces, and each pushing piece 210 and the corresponding carrying area are arranged along the sliding direction of the carrier 200.

[0081] In addition, a plurality of avoiding grooves 411 are arranged on the switch cover plate 410, and a first sliding groove 412, a second sliding groove 413 and a third sliding groove 415 are arranged on the sidewall of each avoiding groove 411.

[0082] In other embodiments, the switch cover assembly 400 can also be composed of plates arranged vertically and suspended above the carrier 200. At this time, the first sliding groove 412, the second sliding groove 413 and the third sliding groove 415 are arranged on the side of the plate. When the carrier 200 passes through the switch cover assembly 400, the PCR tube 500 passes through between two adjacent plates, and the tube cap 510 of the PCR tube 500 is separated from the tube body 520 or covers the tube body 520.

[0083] In summary, when the PCR tube switch cover device is used, the experimenter places the PCR tube 500 on the carrier 200, and then controls the driving assembly 300 to drive the carrier 200 to slide forward and pass through the switch cover assembly 400, so that the tube cap 510 of the PCR tube 500 is separated from the tube body 520. Alternatively, the experimenter controls the driving assembly 300 to drive the carrier 200 to slide reversely and pass through the switch cover assembly 400, so that the tube cap 510 of the PCR tube 500 covers the tube body 520. Compared with manually opening or closing the tube cap 510, the above-mentioned PCR tube switch cover device is more labor-saving and can stably open the cover and is not easy to splash the liquid in the tube.

[0084] In all the examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus, other examples of the example embodiments can have different values.

[0085] It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0086] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A PCR test tube opening and closing device, characterized in that, include: Base; A carrier is slidably disposed on the base. The carrier has a support area for supporting PCR tubes, and the support area is provided with a groove for the tube body of the PCR tube to be inserted. A drive assembly is disposed on the base, and the drive end of the drive assembly is connected to the carrier frame; as well as A switch cap assembly is disposed on the base and located on the sliding path of the carrier. The switch cap assembly can separate the cap of the PCR tube from the tube body when the PCR tube slides forward with the carrier, and close the cap to the tube body when the PCR tube slides backward with the carrier. The switch cover assembly is provided with a first sliding groove and a second sliding groove. The first sliding groove is used to slide and engage with at least one side of the tube body, and the second sliding groove is used to slide and engage with at least one side of the tube cover. The first slide groove is parallel to the sliding direction of the carrier, the second slide groove is inclined relative to the first slide groove, and a wedge-shaped portion is formed between the second slide groove and the first slide groove.

2. The PCR tube opening and closing device according to claim 1, characterized in that, The switch cover assembly is also provided with a third slide groove, which is connected to the end of the second slide groove away from the first slide groove, and the third slide groove is used to store the tube cover.

3. The PCR tube opening and closing device according to claim 2, characterized in that, The carrier is provided with a pusher, and the pusher and the bearing area are arranged along the sliding direction of the carrier. The pusher is used to push the tube cover into the second slide groove when the carrier slides in the opposite direction.

4. The PCR tube opening and closing device according to claim 3, characterized in that, The carrier has multiple bearing areas and is provided with multiple pushers. The switch cover assembly is provided with multiple sets of the first slide groove, the second slide groove and the third slide groove.

5. The PCR tube opening and closing device according to claim 1, characterized in that, The bearing area is provided with at least eight grooves for the tube body to be embedded in, and the at least eight grooves are arranged along the sliding direction of the carrier. The PCR tube is a PCR eight-tube.

6. The PCR tube opening and closing device according to claim 1, characterized in that, The switch cover assembly includes a switch cover plate located on the side of the carrier facing away from the base. The side of the switch cover plate facing the base is provided with a clearance groove, and the first sliding groove and the second sliding groove are provided on the side wall of the clearance groove.

7. The PCR tube opening and closing device according to claim 6, characterized in that, The first groove and the second groove are provided on both side walls of the clearance groove.

8. The PCR tube opening and closing device according to claim 1, characterized in that, The drive assembly includes a lead screw, a lead screw seat, and a rotary drive component. The lead screw is parallel to the sliding direction of the carrier and is rotatably mounted on the base. The lead screw seat is sleeved on the lead screw and connected to the carrier. The rotary drive component is mounted on the base, and the drive end of the rotary drive component is connected to the lead screw.

9. The PCR tube opening and closing device according to claim 1, characterized in that, The base is provided with a slide rail, which is parallel to the sliding direction of the carrier. A slider is slidably mounted on the slide rail and is connected to the carrier.

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