Pipe cap limiting block, cap opening device and using method of cap opening device

Abstract

The invention relates to the technical field of in-vitro diagnosis automation equipment, in particular to a pipe cap limiting block, a cap opening device and a using method of the cap opening device. And the number of the tube cover limiting blocks is multiple, and each tube cover limiting block comprises a limiting block bottom face connected with the tube cover bottom face in an abutting mode. And the plurality of test tubes are limited and fixed through the plurality of tube cover limiting blocks. Furthermore, the tube cover can be moved to the tube cover limiting block through one clamping jaw, and then the next tube cover is transferred through the clamping jaw, so that the opening and closing actions of the tube covers of a plurality of test tubes are realized. According to the structure, cover opening and closing actions are executed on a plurality of specific test tubes through one set of equipment, and the test tube cover opening and closing efficiency is high.

Description

Technical Field

[0001] The present invention relates to the field of in vitro diagnostic automation equipment, and in particular to a tube cover limiting block, a cover opening device and a use method thereof. Background Art

[0002] With the development of sample analysis fields such as biological detection technology and in vitro diagnostic technology, the processing of samples has gradually become more complicated. This requires the transfer of individual single or several test tubes, the opening and closing of the tube caps of the test tubes, and the implementation of testing and other tasks. For example, during the storage and use of cryopreserved tubes, it is often necessary to transfer and test the strains in the cryopreserved tubes.

[0003] However, the prior art cannot individually control the removal of any one or more of the hole cryotubes, and perform the opening and closing of the lids on the above-mentioned cryotubes. For example, the cryotube decapping machine disclosed in CN219363219U drives the decapping screwdriver to rotate the hole cryotubes to open and close the lids through multiple decapping motors and transmission shafts, and then pushes out the cryotube lids through the internal ejector rods after the lids are opened. However, the above-mentioned decapping machine not only has a complex overall structure, but most importantly, it can only allow all the hole cryotubes to open and close the lids at the same time, and cannot individually control the removal of any one of the hole cryotubes. In addition, after the above-mentioned cryotubes are opened, the cryotube lids are always on the decapping screwdriver, and the decapping screwdriver cannot be used to continue to perform actions such as opening the lids of other cryotubes.

[0004] In order to solve the above-mentioned problem that the opening and closing of covers cannot be realized for individual cryopreserved tubes. The invention patent application with publication number CN111392673A protects: a test tube automatic opening and closing cover device. The opening and closing cover device clamps the tube wall of the test tube by tube wall clamps. Afterwards, the bottle cap is clamped by a three-axis electric clamp, and the opening action is realized under the drive of a rotating motor. Although the above-mentioned test tube automatic opening and closing cover device can realize the opening and closing of covers for a single test tube. However, the above-mentioned test tube automatic opening and closing cover device has low working efficiency and can only process one test tube at a time, and cannot realize the opening and closing of covers for multiple test tubes and test tubes of different brands and different capacities. At the same time, the above-mentioned existing equipment is also unable to realize the storage of the test tube caps of the test tubes. Ultimately, the above-mentioned equipment can only realize the opening and closing of covers for one test tube through one set of equipment, which seriously affects the work efficiency of the staff. On the other hand, most of the tube cover storage sites in the prior art are recessed or sunken, so the exposed range of the tube cover is small, and it is difficult for the clamping mechanism of the mechanical claw to clamp it firmly; on the other hand, the tube cover storage site with a raised structure provided by the prior art lacks the functions of guidance and accurate limiting, and when it cooperates with the opening and clamping mechanism of the mechanical arm with low execution accuracy, it may not be possible to accurately place the tube cover in the specified position, thereby affecting the execution of subsequent operations. In short, the technicians in this field are in urgent need of a new opening and closing device, which can realize the opening and closing of one or more specific test tubes according to needs through a set of opening and closing cover control system, and further improve the stability of the tube body and the tube cover, thereby improving the work efficiency of the staff and the reliability of the system. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is how to solve the problem that the test tube cover in the prior art can only perform the opening and closing action on a specific test tube as needed, and cannot perform the opening and closing action on multiple specific test tubes through a set of equipment, resulting in low efficiency of test tube cover opening and closing, affecting work efficiency, and most of the tube cover storage sites are recessed and sunken, resulting in a small exposed range of the tube cover, making it difficult to clamp, etc.

[0006] To this end, in one aspect of the present invention, a tube cover limit block is provided, comprising: a limit block bottom surface abutting against the tube cover bottom surface and a limit block inner protrusion abutting against the tube cover inner cavity wall.

[0007] Optionally, the tube cover limiting block further comprises: an outer protrusion of the limiting block corresponding to the outer peripheral wall of the tube cover and used for guiding and limiting the placement of the tube cover; there are at least two outer protrusions of the limiting block.

[0008] Optionally, the outer protrusion of the limiting block is a trapezoidal structure, having a guide surface for guiding the tube cover and an arc-shaped limiting surface adapted to the shape of the tube cover.

[0009] In another aspect of the present invention, there is provided a cover opening device, comprising:

[0010] A test tube support assembly, wherein the test tube support assembly is provided with at least one cavity for accommodating a test tube;

[0011] A test tube fixing assembly is drivenly connected to the body of the test tube to prevent the test tube from rotating in its circumferential direction;

[0012] The rotating clamp is driven to clamp the tube cover and rotate to complete the opening and closing action of the tube cover on the test tube.

[0013] Optionally, the test tube support assembly comprises:

[0014] A limiting plate is provided with a limiting hole matched with the tube body of the test tube to limit the position of the tube body of the test tube.

[0015] Optionally, the test tube support assembly further comprises a support frame, the support frame having a plurality of bending structures with different spacings from the limiting plate, grooves formed between the bending structures, the grooves accommodating the test tubes of different heights, or the support frame having a support plane in a direction toward the test tube to support the test tube, and / or,

[0016] The plurality of test tubes are arranged in a straight line on the limiting plate through the limiting holes; and the support frame is arranged along the arrangement direction of the plurality of test tubes.

[0017] Optionally, a mounting base for fixing the test tube support assembly is provided on one set of opposite side surfaces of the test tube support assembly; the support frame and / or the limiting plate are fixed on the mounting base.

[0018] Optionally, a side mounting plate for fixing the test tube fixing assembly is provided on another set of opposite side surfaces of the test tube supporting assembly;

[0019] Both ends of the side mounting plate in the length direction are connected to the mounting base.

[0020] Optionally, the test tube fixing assembly comprises:

[0021] Tube body clamps, the number of the tube body clamps is at least two, the clamps are arranged in parallel and symmetrically on both sides of the test tube arrangement direction, and are arranged along the arrangement direction of the multiple test tubes; the two tube body clamps have a clamping state in which they are driven to move toward each other to synchronously clamp and fix each of the test tubes, and a loosening state in which they are driven to move away from each other to synchronously loosen each of the test tubes;

[0022] The tube body clamp driving mechanism comprises: a clamp driving source and two driving sliders moving toward or away from each other under the drive of the clamp driving source; the two driving sliders are respectively fixedly connected to the two tube body clamps to drive the tube body clamps to achieve clamping and loosening.

[0023] Optionally, the tube body clamp includes: a clamp block installed on the driving slider, and a clamp elastic member fixed on the clamp block; the clamp block is a hard strip structure, and the clamp elastic member is arranged on the side of the clamp block facing the test tube.

[0024] Optionally, the tube body clamp comprises: a clamp block or a clamp elastic member; the clamp block or the clamp elastic member is installed on the driving slider; the clamp block or the clamp elastic member is provided with a groove that matches the tube body shape of the test tube.

[0025] Optionally, the rotating jaw comprises:

[0026] A clamp, driven to clamp or release the tube cover;

[0027] A clamp driving source is connected to the clamp through a rotating mechanism to drive the clamp to clamp or loosen the tube cover, and drives the tube cover to rotate through the rotating mechanism to tighten or loosen the tube cover;

[0028] The tube cover limiting column is arranged at the rotation center position of the rotating mechanism; during use, the tube cover limiting column abuts against the center position of the tube cover to make the test tube in the vertical position of the rotating clamp.

[0029] Optionally, the tube cover limiting column is connected to the rotating mechanism through an elastic element, and the tube cover limiting column is extended and retracted under the drive of the elastic element to apply a pressing force toward the tube cover.

[0030] Optionally, the clamp is used for the tube cover on the tube cover limit block, and the clamp comprises: relatively arranged clamp bases, and clamping blocks installed on the clamp bases and adapted to the tube cover; at least two clamping blocks are arranged on each clamp base to adapt to different models of the tube covers;

[0031] A clamping gap a is formed between the adjacent clamping blocks; there are at least two outer protrusions of the limit block, and the clamping gap a is larger than the outer ring limit width b on the outer protrusion of the limit block, thereby forming a grasping gap to avoid the movement stroke of the rotating clamp when opening or clamping.

[0032] Optionally, the test tube support assembly is further provided with a tube cover temporary storage position for storing tube covers, and the tube cover temporary storage position is arranged on the limiting plate at a position adjacent to the limiting hole; the tube cover temporary storage position is the above-mentioned tube cover limiting block.

[0033] In another aspect of the present invention, a method for using the cover opening device described in the above aspect is provided, comprising the following steps:

[0034] Step S1, the rotating clamp grabs one or more test tubes as needed, and sequentially transfers the test tubes to the cavity formed by the limiting hole of the limiting plate and the supporting frame;

[0035] Step S2, the test tube fixing assembly is driven to clamp and fix the test tube on the limiting plate to prevent the test tube from rotating along its circumferential direction;

[0036] Step S3, the rotating clamp sequentially performs the opening action of the tube cover of each of the test tubes on the limiting plate, and places the tube covers one by one in the tube cover temporary storage position to complete the opening action; during the opening process, the rotating clamp clamps the tube cover and is driven to rotate and rise;

[0037] Step S4, the test tube fixing assembly keeps clamping and fixing the test tube;

[0038] The rotating clamp sequentially takes out the tube caps from the temporary storage position of the tube caps, and performs the cover closing action on each of the test tubes on the limiting plate to complete the cover closing action; during the cover closing process, the rotating clamp holds the tube caps and is driven to rotate and descend;

[0039] Step S5, the test tube fixing assembly is driven to release the test tube on the limiting plate; the rotating clamp grabs the test tube and moves it to the initial position.

[0040] The technical solution of the present invention has the following advantages:

[0041] 1. The tube cover limit block provided by the present invention includes at least one tube cover limit block, and each of the tube cover limit blocks includes: a limit block bottom surface abutting against the tube cover bottom surface.

[0042] The above structure can realize the opening and closing of the tube caps of multiple test tubes by moving the tube cap to the tube cap limit block through a clamp, and then moving the next tube cap through the clamp, so as to realize the opening and closing of the tube caps of multiple test tubes. The above structure can realize the opening and closing of multiple specific test tubes through a set of equipment, and the opening and closing of the test tube caps is efficient.

[0043] 2. The tube cover stopper provided by the present invention, the tube cover temporary storage position is a tube cover stopper set on the stopper plate; the tube cover stopper includes one or more of the following structures: a bottom surface of the stopper abutting against the bottom surface of the tube cover, an inner protrusion of the stopper abutting against the inner cavity wall of the tube cover, and an outer protrusion of the stopper corresponding to the outer peripheral wall of the tube cover and used for placing, guiding and limiting the tube cover;

[0044] Furthermore, there are at least two outer protrusions of the limit block, and adjacent outer protrusions of the limit block form a gripping gap to avoid the movement stroke of the rotating clamp when opening or clamping; the outer protrusion of the limit block is a trapezoidal structure, having a guide surface for guiding the tube cover and an arc-shaped limit surface adapted to the shape of the tube cover.

[0045] In the present invention, by providing an inner protrusion of the limit block on the tube cover limit block, the inner side of the tube cover can be limited, which can effectively avoid the problem of position deviation and eccentricity when the tube cover is placed after opening. By providing an outer protrusion of the limit block on the tube cover limit block, the tube cover can be effectively placed and guided, so that the rotating jaws can accurately put the tube cover into the tube cover limit block. At the same time, the outer protrusion of the limit block can also play a role in limiting and fixing the outer side of the tube cover. In addition, the outer protrusions of the limit block in the present invention are at least two, and the adjacent outer protrusions of the limit block form a gripping gap to avoid the action stroke of the rotating jaw when opening or clamping. The above-mentioned gripping gap can facilitate the rotating jaws to clamp the outer wall of the tube cover.

[0046] 3. The pipe cover stopper provided by the present invention has a stopper protrusion disposed on the stopper plate as the temporary storage position of the pipe cover; the opening edge of the pipe cover is clamped on the stopper protrusion to limit and fix the pipe cover. The stopper protrusion can be directly processed and formed on the stopper plate, which has a simple and reliable structure and is easy to process, and can also firmly and reliably position and fix the pipe cover.

[0047] 4. The cover opening device provided by the present invention comprises:

[0048] A test tube support assembly, wherein the test tube support assembly is provided with at least two cavities for accommodating test tubes, and the test tube support assembly is also provided with a tube cover temporary storage position for storing the tube cover;

[0049] A test tube fixing assembly is drivenly connected to the body of the test tube to prevent the test tube from rotating in its circumferential direction;

[0050] The rotating jaw is driven to clamp the tube cover and rotate to complete the opening and closing action of the tube cover on the test tube; during the working process, any one of the rotating jaws is adapted to the opening and closing action of the tube cover of multiple or multiple test tubes, and places the corresponding tube cover in the tube cover temporary storage position.

[0051] In order to solve the problem that the test tube switch cover in the prior art can only perform the switch cover action on a specific test tube as needed, and it is impossible to perform the switch cover action on multiple specific test tubes through a set of equipment, resulting in low efficiency of the test tube switch cover and affecting work efficiency. In the present invention, a test tube support assembly is first set. A plurality of cavities for accommodating test tubes are provided on the test tube support assembly, so that the operator can transfer one or more test tubes from a storage box for centrally storing test tubes to the test tube support assembly as needed. Afterwards, the tube body of the test tube is positioned and fixed by the test tube fixing assembly to prevent the test tube from rotating along its circumferential direction. In the above process, the tube cover temporary storage position on the test tube support assembly can effectively store the tube cover opened by the rotating clamp, thereby freeing the rotating clamp to process the next tube cover. The structure can efficiently and easily store the tube cover while releasing the rotating clamp. Then, a set of rotating clamps is used to realize the switch cover action on multiple specific test tubes. The above structure is simple and reliable, and effectively solves the need that the switch cover picking and delivering work cannot be completed for multiple specific test tubes at the same time in the prior art.

[0052] 5. The cover opening device provided by the present invention, the test tube support assembly comprises:

[0053] A support frame, the support frame abuts against the bottom surface of the test tube to support the test tube;

[0054] A limiting plate is provided with a limiting hole matched with the tube body of the test tube to limit the position of the tube body of the test tube.

[0055] In the present invention, the support frame abuts against the bottom surface of the test tube, which can effectively support multiple test tubes. At the same time, the position of the test tube can be effectively limited by the limiting holes on the limiting plate. The support frame and the limiting plate form a cavity for accommodating the test tube, so that the test tube remains upright.

[0056] 6. In the cover opening device provided by the present invention, the support frame is a bending structure with a different spacing from the limiting plate to adapt to the test tubes of different heights.

[0057] In the present invention, the support frame with the bending structure can effectively change the distance between the support frame and the limit plate, so that the cover opening device can be adapted to test tubes of different heights. When the cryotubes are stored by the support frame, the cryotubes are supported by the support frames of different heights, so that different types of cryotubes can be supported, such as 0.5ml cryotubes, 1ml cryotubes, 2ml cryotubes, etc.

[0058] 7. In the cover opening device provided by the present invention, a mounting base for fixing the test tube support assembly is provided on one set of opposite side surfaces of the test tube support assembly; the support frame and / or the limit plate are fixed on the mounting base. A side mounting plate for fixing the test tube fixing assembly is provided on another set of opposite side surfaces of the test tube support assembly; both ends of the side mounting plate in the length direction are fixedly connected to the mounting base.

[0059] In the present invention, one or both of the support frame and the limiting plate can be fixed on the mounting base as required.

[0060] At the same time, a side mounting plate for fixing the clamp driving source is also provided on another set of opposite sides of the test tube support assembly. In addition, the support frame and the mounting base can be provided as an integral structure or a detachable split structure as required. In addition, the mounting base and the mounting plate can be provided as an integral structure or a detachable split structure as required.

[0061] 8. In the cover opening device provided by the present invention, the plurality of test tubes are arranged in a straight line on the limit plate through the limit holes; and the support frame is arranged along the arrangement direction of the plurality of test tubes;

[0062] The test tube fixing assembly comprises:

[0063] Tube body clamps, the number of the tube body clamps is at least two, the clamps are arranged in parallel and symmetrically on both sides of the test tube arrangement direction, and are arranged along the arrangement direction of the multiple test tubes; the two tube body clamps have a clamping state in which they are driven to move toward each other to synchronously clamp and fix each of the test tubes, and a loosening state in which they are driven to move away from each other to synchronously loosen each of the test tubes;

[0064] The tube body clamp driving mechanism comprises: a clamp driving source and two driving sliders moving toward or away from each other under the drive of the clamp driving source; the two driving sliders are respectively fixedly connected to the two tube body clamps to drive the tube body clamps to achieve clamping and loosening.

[0065] In the present invention, the limiting holes on the limiting plate are arranged in a straight line, and the multiple test tubes are clamped and fixed by the tube body clamps arranged in parallel and symmetrically. The tube body clamps can stably and reliably hold and fix multiple test tubes at the same time, effectively meeting the requirement of simultaneously fixing multiple test tubes.

[0066] 9. In the cover opening device provided by the present invention, the tube body clamp comprises: a clamp block installed on the driving slider, and a clamp elastic member fixed on the clamp block; the clamp block is a hard strip structure, and the clamp elastic member is arranged on the side of the clamp block facing the test tube.

[0067] In the present invention, the clamp block and the clamp elastic member cooperate with each other to better limit and fix the tube body of the test tube. The clamp block has sufficient hardness to ensure that the clamp elastic member deforms within a preset range. In addition, the clamp elastic member can provide sufficient elastic deformation, so that the tube body clamp clamps the test tube. Of course, in the present invention, one of the clamp block and the clamp elastic member can be selected as needed to independently clamp and fix the test tube.

[0068] 10. In the cover opening device provided by the present invention, the side mounting plate and the support frame can be separate structures, thereby reducing the difficulty of production and processing of parts. Of course, the side mounting plate and the support frame can also be set as an integrated structure as needed to reduce the difficulty of installation of the cover opening device. The above setting can effectively achieve that the side mounting plate and the support frame are installed on the installation base at the same time, thereby meeting different production, processing and installation needs.

[0069] 11. In the cap opening device provided by the present invention, the temporary storage position of the tube cap is a tube cap limit block arranged on the limit plate. In one embodiment, by integrally forming the tube cap limit block on the limit plate, it can be effectively ensured that the tube cap limit block will not be offset relative to the limit plate, and the rotating jaw can stably and reliably grasp the tube cap each time it moves.

[0070] 12. The clamp provided by the present invention, the rotating clamping jaw comprises:

[0071] A clamp, driven to clamp or release the tube cover;

[0072] A clamp driving source is connected to the clamp through a rotating mechanism to drive the clamp to clamp or loosen the tube cover, and drives the tube cover to rotate through the rotating mechanism to tighten or loosen the tube cover;

[0073] The tube cover limiting column is arranged at the rotation center position of the rotating mechanism; during use, the tube cover limiting column abuts against the center position of the tube cover to make the test tube in the vertical position of the rotating clamp.

[0074] In the present invention, the clamp is driven to rotate by a clamp driving source, thereby realizing opening or closing the tube cover on the test tube. The above structure can effectively cooperate with the test tube support assembly and the test tube fixing assembly, and realize the opening and closing cover action of multiple specific test tubes through a set of rotating jaws. The above structure is simple and reliable, and at the same time effectively solves the need in the prior art that it is impossible to complete the opening and closing cover picking and delivering work for multiple specific test tubes at the same time. Moreover, the tube cover limiting column in the present invention can always abut the center position of the tube cover when the rotating jaw performs the opening, closing, and clamping movements on the test tube, so that the tube cover is limited by the tube cover limiting column, and the test tube is always kept in a vertical state, which is convenient for the rotating jaw to complete the opening and closing cover and transfer of the test tube.

[0075] 13. The clamp provided by the present invention comprises: clamp bases arranged opposite to each other, and clamping blocks installed on the clamp bases and adapted to the tube covers; at least two clamping blocks are arranged on each clamp base to adapt to different models of tube covers.

[0076] In the present invention, the clamping block can be used to clamp and rotate tube covers of different models and types, thereby improving the application range of the equipment.

[0077] 14. In the clamp provided by the present invention, the tube cover limiting column is connected to the clamp through an elastic element, and the tube cover limiting column is extended and retracted under the drive of the elastic element to apply a pressing force toward the tube cover.

[0078] The elastic element can make the tube cover limiting column contact the tube cover more closely, improve the limiting effect of the tube cover, ensure that the test tube always remains in a vertical state, and facilitate the rotating clamp to complete the opening and closing of the test tube and the transfer of the test tube.

[0079] 15. The method for using the cover opening device provided by the present invention comprises the following steps:

[0080] Step S1, the rotating clamp grabs one or more test tubes as needed, and sequentially transfers the test tubes to the cavity formed by the limiting hole of the limiting plate and the supporting frame;

[0081] Step S2, the test tube fixing assembly is driven to clamp and fix the test tube on the limiting plate to prevent the test tube from rotating along its circumferential direction;

[0082] Step S3, the rotating clamp sequentially performs the opening action of the tube cover of each of the test tubes on the limiting plate, and places the tube covers one by one in the tube cover temporary storage position to complete the opening action; during the opening process, the rotating clamp clamps the tube cover and is driven to rotate and rise;

[0083] Step S4, the test tube fixing assembly keeps clamping and fixing the test tube;

[0084] The rotating clamp sequentially takes out the tube caps from the temporary storage position of the tube caps, and performs the cover closing action on each of the test tubes on the limiting plate to complete the cover closing action; during the cover closing process, the rotating clamp holds the tube caps and is driven to rotate and descend;

[0085] Step S5, the test tube fixing assembly is driven to release the test tube on the limiting plate; the rotating clamp grabs the test tube and moves it to the initial position.

[0086] In the present invention, the cover opening device cooperates with the above-mentioned use method to realize: the opening and closing of the covers of multiple specific test tubes is realized by a set of rotating clamps, which effectively solves the problem that the opening and closing of the cover of the test tube in the prior art can only be performed on a specific test tube as needed, and it is impossible to perform the opening and closing of the cover of multiple specific test tubes by a set of equipment, resulting in low efficiency of opening and closing the cover of the test tube and affecting work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0088] Figure 1 A first-view stereoscopic schematic diagram of the combined structure of the test tube support assembly and the test tube fixing assembly provided by the present invention;

[0089] Figure 2 A second perspective perspective schematic diagram of the combined structure of the test tube support assembly and the test tube fixing assembly provided by the present invention;

[0090] Figure 3 An exploded schematic diagram of the combined structure of the test tube support assembly and the test tube fixing assembly provided by the present invention;

[0091] Figure 4 A front view of the combined structure of the test tube support assembly and the test tube fixing assembly provided by the present invention;

[0092] Figure 5 A side view of the combined structure of the test tube support assembly and the test tube fixing assembly provided by the present invention;

[0093] Figure 6 A schematic diagram of the three-dimensional structure of the pipe cover limiting block provided by the present invention;

[0094] Figure 7 A schematic diagram of the three-dimensional structure of a clamp driving source provided by the present invention driving a rotating clamping claw to clamp a test tube;

[0095] Figure 8 A schematic diagram of the three-dimensional structure of the clamp provided by the present invention;

[0096] Fig. 9 A structural front view of the clamp provided by the present invention holding a test tube;

[0097] Fig.10 A schematic diagram of the internal structure of the rotating clamping jaw with an elastic element provided by the present invention;

[0098] Fig.11 A front view of a rotating clamping jaw with an elastic element provided by the present invention;

[0099] Fig.12 A schematic diagram of the position of the clamping gap a of the rotating clamping jaw clamping block provided by the present invention;

[0100] Fig.13 A schematic diagram of the action of the rotating clamp provided by the present invention clamping a test tube on a limiting plate;

[0101] Fig.14 This is a schematic diagram of the action of the rotating clamp provided by the present invention for clamping a test tube.

[0102] Description of reference numerals:

[0103] 1-test tube; 2-tube cover; 3-rotating clamp; 4-support frame; 5-limiting plate; 6-limiting hole; 7-mounting base; 8-tube cover limiting block; 801-limiting block bottom surface; 802-limiting block inner protrusion; 803-limiting block outer protrusion; 9-side mounting plate; 10-tube body clamp; 11-clamp driving source; 12-driving slider; 13-clamp block; 14-clamp elastic member; 15-clamp; 16-clamp driving source; 17-rotating mechanism; 18-tube cover limiting column; 19-clamp base; 20-clamping block; 21-elastic element; 22-tube cover temporary storage position. DETAILED DESCRIPTION

[0104] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0105] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0106] Example 1

[0107] See also Figure 6 , Figure 6A schematic diagram of the three-dimensional structure of a tube cover limit block provided in an embodiment of the present invention is shown. In this embodiment, the tube cover limit block 8 includes: a limit block bottom surface 801 abutting against the bottom surface of the tube cover 2, and a limit block inner protrusion 802 abutting against the inner cavity wall of the tube cover 2. Among them, the limit block bottom surface 801 is used to receive the bottom surface of the tube cover 2 and keep it in a horizontal state. At the same time, it prevents the residual reagents on the tube cover 2 from directly contacting the equipment, and the bottom surface 801 of the limit block can be directly cleaned in the later cleaning, which is convenient for cleaning. In addition, the inner protrusion 802 of the limit block is stuck into the inner cavity of the tube cover 2, so as to limit and fix the tube cover 2 from the inner edge to prevent it from shifting in position. Optionally, the outer contour edge of the inner protrusion 802 of the limit block is also provided with a chamfer to guide the tube cover 2 to insert into the inner protrusion 802 of the limit block.

[0108] As a preferred embodiment, the tube cover stopper 8 further comprises: a stopper outer protrusion 803 corresponding to the outer peripheral wall of the tube cover 2 and used for placing, guiding and limiting the tube cover 2. As a preferred embodiment, the stopper outer protrusion 803 is a trapezoidal structure, having a guide surface for guiding the tube cover 2 and an arc-shaped stopper surface adapted to the shape of the tube cover 2.

[0109] The arc-shaped limiting surface is matched with the outer contour of the pipe cover 2, so as to more firmly and reliably limit and fix the pipe cover 2. The outer protrusion 803 of the limiting block is connected to the outer peripheral wall of the pipe cover 2, and the pipe cover 2 is limited and fixed from the outer edge. Optionally, the outer protrusion 803 of the limiting block can be a trapezoidal structure of the pipe cover 2, and the inclined surface of the outer protrusion 803 of the limiting block with the trapezoidal structure faces the pipe cover 2. The outer protrusion 803 of the limiting block with the trapezoidal structure can guide the pipe cover 2 to be inserted into the inner protrusion 802 of the limiting block more accurately.

[0110] Example 2

[0111] In a specific embodiment, see Figure 1 , Figure 2 ,as well as Figure 7 , Figure 1 A first-view stereoscopic schematic diagram of the combined structure of the test tube support assembly and the test tube fixing assembly in an embodiment of the present invention is shown. Figure 2 A second perspective stereoscopic schematic diagram of the combined structure of the test tube support assembly and the test tube fixing assembly in an embodiment of the present invention is shown. Figure 7 The schematic diagram of the three-dimensional structure of the rotating clamp 3 holding the test tube 1 in the embodiment of the present invention is shown. The cover opening device provided in this embodiment includes:

[0112] A test tube support assembly, wherein the test tube support assembly is provided with at least two cavities for accommodating the test tube 1;

[0113] A test tube fixing assembly is drivenly connected to the body of the test tube 1 to prevent the test tube 1 from rotating in its circumferential direction;

[0114] The rotating jaw 3 is driven to clamp the tube cover 2 and rotate to complete the opening and closing action of the tube cover 2 on the test tube 1. During the working process, any one of the rotating jaws 3 is adapted to the opening and closing actions of the tube covers 2 of multiple or multiple test tubes 1.

[0115] In the present invention, a test tube support assembly is first provided. A plurality of cavities for accommodating test tubes 1 are provided on the test tube support assembly, so that an operator can transfer one or more test tubes 1 from a storage box for storing test tubes to the test tube support assembly as needed. Afterwards, the tube body of the test tube 1 is positioned and fixed by the test tube fixing assembly to prevent the test tube 1 from rotating in its circumferential direction. Then, a set of rotating jaws 3 is used to realize the opening and closing of the covers of a plurality of specific test tubes 1.

[0116] See also Figure 3 and Figure 4 , Figure 3 An exploded schematic diagram of the combined structure of the test tube support assembly and the test tube fixing assembly in an embodiment of the present invention is shown. Figure 4 The front view of the combined structure of the test tube support assembly and the test tube fixing assembly in the embodiment of the present invention is shown. The limiting plate 5 is provided with a limiting hole 6 adapted to the tube body of the test tube 1 to limit the position of the tube body of the test tube 1 .

[0117] Moreover, in this embodiment, the plurality of test tubes 1 are arranged in a straight line on the limiting plate 5 through the limiting holes 6; and the support frame 4 is arranged along the arrangement direction of the plurality of test tubes 1. In an optional embodiment, for the test tube 1 having an outer flange on the tube body, the outer flange of the test tube 1 can be clamped on the limiting hole 6 to achieve fixation.

[0118] It can be understood that the above-mentioned embodiments do not specifically limit the arrangement of the plurality of limiting holes 6. In other embodiments, the plurality of limiting holes 6 can also be arranged in an L-shape, a Z-shape, or the like. The clamping portion of the test tube fixing assembly is adapted to the different arrangements of the above-mentioned limiting holes 6. In a preferred embodiment, the test tube support assembly further includes: a support frame 4, the support frame 4 having a plurality of bending structures with different spacings from the limiting plate 5, grooves being formed between the bending structures, the grooves accommodating the test tubes 1 of different heights, or the support frame 4 having a supporting plane in the direction toward the test tube 1 to support the test tube 1.

[0119] In another preferred embodiment, the plurality of test tubes 1 are arranged in a straight line on the limiting plate 5 through the limiting holes 6 ; and the support frame 4 is arranged along the arrangement direction of the plurality of test tubes 1 .

[0120] The support frame 4 is in contact with the bottom surface of the test tube 1 to support the test tube 1; in this embodiment, the support frame 4 is a bending structure with a different spacing from the limiting plate 5 to adapt to the test tubes 1 of different heights; in an optional embodiment, the support frame 4 is a plate-like structure, and the middle position of the support frame 4 faces the raised portion of the limiting plate 5, so as to abut against the test tube 1 with a shorter support length. Moreover, the middle raised structure of the support frame 4 can also form a receiving cavity for accommodating the clamp driving source 11 on the side of the support frame 4 away from the limiting plate 5. In addition, a plurality of recessed portions extending in a direction away from the limiting plate 5 are formed on both sides of the support frame 4, so as to abut against the test tube 1 with a longer support length. It can be understood that this embodiment does not specifically limit whether the support frame 4 is a bending structure, and the support frame 4 has a supporting plane in the direction of the test tube 1 to support the test tube 1.

[0121] In a preferred embodiment, the support frame 4 is a flat plate-like structure to support the bottom of the test tube 1, thereby meeting the storage needs of the test tube 1 at a single height. In an optional embodiment, the support frame 4 has a support plane facing the test tube 1, for example, the support frame 4 can be a disc-shaped device with a tray or the like on the top.

[0122] On one set of opposite side surfaces of the test tube support assembly, a mounting base 7 for fixing the test tube support assembly is provided; the support frame 4 and / or the limit plate 5 are fixed on the mounting base 7. Optionally, on another set of opposite side surfaces of the test tube support assembly, a side mounting plate 9 for fixing the test tube fixing assembly is provided; both ends of the side mounting plate 9 in the length direction are connected to the mounting base 7.

[0123] Furthermore, the side mounting plate 9 is composed of two symmetrically arranged rectangular plates. On one set of opposite sides of the test tube support assembly, a mounting base 7 for fixing the test tube support assembly is provided, and the mounting base 7 is two rectangular vertical plates; the support frame 4 and the limit plate 5 are fixed on the mounting base 7. In this embodiment, the clamp driving source 11 for driving the test tube fixing assembly is installed on the side mounting plate 9. In an optional embodiment, the side mounting plate 9 and the support frame 4 are detachable structures to facilitate the production and installation of parts. This embodiment does not specifically limit whether the mounting base 7 and the side mounting plate 9 are detachable structures. In other embodiments, the mounting base 7 and the side mounting plate 9 can also be an integrated structure to reduce the difficulty of installing the cover opening device.

[0124] It can be understood that the above-mentioned embodiment does not specifically limit the components fixed on the mounting base 7. In other embodiments, a mounting base 7 for fixing the test tube support assembly is provided on one set of relative side surfaces of the test tube support assembly; the support frame 4 is fixed on the mounting base 7, and the limit plate 5 is installed on another independent base above the support frame 4.

[0125] See also Figures 3 to 5 , Figure 3 An exploded schematic diagram of the combined structure of the test tube support assembly and the test tube fixing assembly in an embodiment of the present invention is shown. Figure 4 The front view of the combined structure of the test tube support assembly and the test tube fixing assembly in the embodiment of the present invention is shown. Figure 5 A side view of the combined structure of the test tube support assembly and the test tube fixing assembly in an embodiment of the present invention is shown.

[0126] The test tube fixing assembly comprises:

[0127] Tube body clamps 10, there are at least two of the tube body clamps 10, which are arranged in parallel and symmetrically on both sides of the arrangement direction of the test tubes 1, and are arranged along the arrangement direction of the multiple test tubes 1; the two tube body clamps 10 have a clamping state in which they are driven to move toward each other to synchronously clamp and fix each of the test tubes 1, and a loosening state in which they are driven to move away from each other to synchronously loosen each of the test tubes 1;

[0128] The tube body clamp driving mechanism includes: a clamp driving source 11 and two driving sliders 12 that move toward or away from each other under the drive of the clamp driving source 11; the two driving sliders 12 are respectively fixedly connected to the two tube body clamps 10 to drive the tube body clamps 10 to achieve clamping and loosening.

[0129] Furthermore, the tube body clamp 10 comprises: a clamp block 13 mounted on the driving slider 12, and a clamp elastic member 14 fixed on the clamp block 13. The clamp block 13 is a hard strip structure, and the clamp elastic member 14 is arranged on the side of the clamp block 13 facing the test tube 1.

[0130] The clamp block 13 and the clamp elastic member 14 cooperate with each other to better limit and fix the tube body of the test tube 1. The clamp block 13 has sufficient hardness to ensure that the clamp elastic member 14 is deformed within a preset range. In addition, the clamp elastic member 14 can provide sufficient elastic deformation so that the tube body clamp 10 can clamp the test tube 1. As an example, the clamp block 13 is provided with a socket, and the driving slider 12 is provided with a convex rod adapted to the socket, the convex rod is inserted into the socket and the clamp block 13 is fixed to the driving slider 12 by screws.

[0131] Furthermore, the tube body clamp 10 includes: a clamp block 13 or a clamp elastic member 14; the clamp block 13 or the clamp elastic member 14 is installed on the driving slider 12; the clamp block 13 or the clamp elastic member 14 is provided with a groove adapted to the tube body shape of the test tube 1.

[0132] It can be understood that the above embodiment does not specifically limit the specific structure of the tube body clamp 10. In other embodiments, the tube body clamp 10 only includes: a clamp block 13 installed on the driving slider 12, and the clamp block 13 is provided with a groove that matches the tube body shape of the test tube 1. Alternatively, the tube body clamp 10 only includes: a clamp elastic member 14 installed on the driving slider 12. In this embodiment, the above clamp block 13 or the clamp elastic member 14 can be selected as needed to independently clamp and fix the test tube 1.

[0133] In any of the above embodiments, the above-mentioned clamping jaw block 13 or the clamping jaw elastic member 14 can be provided with a groove structure adapted to the tube shape of the test tube 1 as needed, or any structure adapted to the test tube 1, including: trapezoidal, semicircular, wavy and other structures.

[0134] In an optional embodiment, the test tube fixing assembly includes a plurality of independently controllable tube body clamps 10 and a tube body clamp driving mechanism, which can independently control and fix a designated test tube 1 .

[0135] In a specific embodiment, see Figures 7 to 9 , Figure 7 A schematic diagram of the three-dimensional structure of a clamp driving source driving a rotating clamping claw to clamp a test tube in an embodiment of the present invention is shown. Figure 8 A schematic diagram of the three-dimensional structure of a clamp in an embodiment of the present invention is shown. Fig. 9 The front view of the structure of the clamp holding the test tube in the embodiment of the present invention is shown. The rotating clamp 3 includes:

[0136] A clamp 15, driven to clamp or release the tube cover 2;

[0137] The clamp driving source 16 is connected to the clamp 15 through the rotating mechanism 17 to drive the clamp 15 to clamp or release the tube cover 2, and drives the tube cover 2 to rotate through the rotating mechanism 17 to tighten or loosen the tube cover 2.

[0138] Optionally, the clamp 15 also includes: a clamp base 19 arranged opposite to each other, and a clamping block 20 installed on the clamp base 19 and adapted to the tube cover 2; each clamp base 19 is provided with at least two clamping blocks 20 to adapt to different models of the tube cover 2; it can be understood that the clamp driving source can be a motor, an electric push rod or other well-known technologies, which can be directly connected to the clamp base 19, or the power can be transmitted to the clamp base 19 through components such as a rack. In short, as long as the relatively arranged clamp bases 19 can be made to move relative to each other, any existing technical means can be used.

[0139] Furthermore, the rotating jaw 3 also includes a tube cover limiting column 18, which is arranged at the rotation center position of the rotating mechanism 17; during use, the tube cover limiting column 18 abuts against the center position of the tube cover 2 to make the test tube 1 in the vertical position of the rotating jaw 3.

[0140] The tube cover limiting column 18 in the present invention can always abut against the center position of the tube cover 2 when the rotating clamp 3 performs the opening, closing, and clamping movements on the test tube 1, thereby limiting the tube cover 2 through the tube cover limiting column 18, while allowing the test tube 1 to always remain in a vertical state, making it easier for the rotating clamp 3 to complete the opening, closing, and transfer of the test tube 1. It can be understood that the present embodiment does not specifically limit the specific structure of the tube cover limiting column 18. For example, the tube cover limiting column 18 is not limited to a cylinder, but can also be a cone or a rectangular parallelepiped. Furthermore, in other optional embodiments, such as Fig.10 and Fig.11 As shown, the tube cover limiting column 18 is connected with the rotating mechanism 17 through an elastic element 21 such as a spring, and applies pressure to the tube cover 2 through the elastic element 21, so as to better abut against the tube cover 2. Specifically, the rotating jaw 3 first moves to the top of the test tube 1 to be opened, and makes the tube cover limiting column 18 face the center position of the tube cover 2 of the test tube 1, and then descends, so that the tube cover limiting column 18 abuts against the tube cover 2. At this time, the rotating jaw 3 continues to descend and compresses the elastic element 21, so that the elastic element 21 generates a rebound force and acts on the abutting tube cover 2, that is, the elastic element 21 applies pressure to the tube cover 2. At this time, since the test tube 1 is limited by the limiting hole 6, the tube cover 2 is in a horizontal state, and the pressure exerted by the elastic element 21 on the tube cover 2 causes the tube cover limiting column 18 to limit the tube cover 2 and maintain a horizontal state. At the same time, the pressure generated by the elastic element 21 also allows the test tube 1 to always remain in a vertical state, ultimately achieving the effect of facilitating the rotating jaws 3 to complete the opening and closing of the test tube 1 and the transfer of the test tube 1.

[0141] On the other hand, the present embodiment does not specifically limit the specific structure of the clamp 15. In other embodiments, the clamp 15 may be: a clamp base 19 arranged opposite to each other. The pipe cover 2 is directly clamped by the clamp base 19. Optionally, the clamp base 19 may be made of a flexible material, or a structure such as a groove may be provided thereon to adapt to different models of the pipe cover 2 and improve the stability of clamping.

[0142] Further, see Fig.12 , which shows a schematic diagram of the position of the inner gap a of the clamping block 20 of the rotating clamping jaw 3 in the embodiment of the present invention, and a clamping gap a is formed between the adjacent clamping blocks 20; further, refer to Figure 6 The outer protrusions 803 of the limit block are at least two, and the clamping gap a is larger than the outer ring limit width b on the outer protrusions 803 of the limit block, thereby forming a gripping gap to avoid the movement stroke of the rotating clamp 3 when opening or clamping.

[0143] like Fig.13 and Fig.14 As shown, in the process of the clamping block 20 clamping the pipe cover 2, since the clamping gap a is larger than the outer ring limiting width b on the outer protrusion 803 of the limiting block, the outer protrusion 803 of the limiting block will not prevent the clamping block 20 from clamping the above-mentioned pipe cover 2. In this embodiment, the structure of the outer protrusion 803 of the limiting block can be referred to above and will not be repeated here.

[0144] In an optional embodiment, the test tube support assembly is further provided with a tube cover temporary storage position 22 for storing the tube cover 2, and the tube cover temporary storage position 22 is provided on the limiting plate 5, at a position adjacent to the limiting hole 6. As a preferred embodiment, the tube cover temporary storage position 22 is the tube cover limiting block 8 in Example 1.

[0145] It can be understood that the above embodiment does not specifically limit the connection method between the tube cover stopper 8 and the stopper plate 5. In an optional embodiment, the tube cover temporary storage position 22 is a tube cover stopper 8 integrally formed on the stopper plate 5. The tube cover stopper 8 is integrally formed on the stopper plate 5, which can effectively ensure that the tube cover stopper 8 will not be offset relative to the stopper plate 5, and ensure that the rotating jaw 3 can stably and reliably grasp the tube cover 2 every time it moves. In another optional embodiment, the tube cover stopper 8 is an independent module, which can be detachably mounted on the stopper plate 5 to adapt to test tubes 1 and clamps 15 of different specifications.

[0146] In some more specific embodiments, the tube cover limit block 8 is fixed to the limit plate 5 by means of clipping or bonding, thereby ensuring that the tube cover limit block 8 will not be positionally offset relative to the limit plate 5, ensuring that the rotating jaw 3 can stably and reliably grasp the tube cover 2 each time it moves.

[0147] The above embodiment does not specifically limit the location of the temporary storage position 22 for pipe covers. In other embodiments, the temporary storage position 22 for pipe covers may also be located on another separate support frame beside the limiting plate 5 .

[0148] Example 3

[0149] In a specific embodiment, the method for using the cover opening device comprises the following steps:

[0150] Step S1, the rotating clamp 3 grabs one or more test tubes 1 as needed, and sequentially transfers the test tubes 1 to the cavity formed by the limiting hole 6 of the limiting plate 5 and the supporting frame 4;

[0151] Step S2, the test tube fixing assembly is driven to clamp and fix the test tube 1 on the limiting plate 5 to prevent the test tube 1 from rotating along its circumferential direction;

[0152] Step S3, the rotating jaw 3 sequentially performs the opening action of the tube cover 2 of each of the test tubes 1 on the limiting plate 5, and places the tube covers 2 one by one in the tube cover temporary storage position 22 to complete the opening action; during the opening process, the rotating jaw 3 clamps the tube cover 2 and is driven to rotate and rise;

[0153] Step S4, the test tube fixing assembly keeps clamping and fixing the test tube 1;

[0154] The rotating clamp 3 sequentially takes out the tube cover 2 on the tube cover temporary storage position 22, and performs the cover closing action on each of the test tubes 1 on the limiting plate 5 to complete the cover closing action; during the cover closing process, the rotating clamp 3 clamps the tube cover 2 and is driven to rotate and descend;

[0155] In step S5, the test tube fixing assembly is driven to release the test tube 1 on the limiting plate 5; the rotating clamp 3 grabs the test tube 1 and moves it to the initial position.

[0156] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A pipe cover limit block, characterized in that: include: The bottom surface (801) of the limiting block abuts against the bottom surface of the tube cover (2), and the inner protrusion (802) of the limiting block abuts against the inner cavity wall of the tube cover (2).

2. The pipe cover limiting block according to claim 1, characterized in that: The tube cover limiting block (8) further comprises: a limiting block outer protrusion (803) corresponding to the outer peripheral wall of the tube cover (2) and used for positioning, guiding and limiting the tube cover (2); the limiting block outer protrusions (803) are at least two.

3. The pipe cover limiting block according to claim 2, characterized in that: The outer protrusion (803) of the limiting block is a trapezoidal structure, having a guide surface for guiding the tube cover (2) and an arc-shaped limiting surface that matches the shape of the tube cover (2).

4. A cover opening device, characterized in that: include: A test tube support assembly, wherein the test tube support assembly is provided with at least one cavity for accommodating a test tube (1); A test tube fixing assembly, drivenly connected to the body of the test tube (1) to prevent the test tube (1) from rotating in its circumferential direction; The rotating clamp (3) is driven to clamp the tube cover (2) and rotate to complete the opening and closing action of the tube cover (2) on the test tube (1).

5. The cover opening device according to claim 4, characterized in that: The test tube support assembly comprises: A limiting plate (5), wherein the limiting plate (5) is provided with a limiting hole (6) adapted to the tube body of the test tube (1) so as to limit the position of the tube body of the test tube (1).

6. The cover opening device according to claim 5, characterized in that: The test tube support assembly further comprises a support frame (4), wherein the support frame (4) has a plurality of bending structures with different spacings from the limiting plate (5), grooves are formed between the bending structures, and the grooves accommodate the test tubes (1) of different heights, or the support frame (4) has a support plane in a direction toward the test tube (1) to support the test tube (1), and / or, The plurality of test tubes (1) are arranged in a straight line on the limiting plate (5) through the limiting holes (6); and the support frame (4) is arranged along the arrangement direction of the plurality of test tubes (1).

7. The cover opening device according to claim 6, characterized in that: A mounting base (7) for fixing the test tube support assembly is provided on one set of opposite side surfaces of the test tube support assembly; the support frame (4) and / or the limiting plate (5) are fixed on the mounting base (7).

8. The cover opening device according to claim 7, characterized in that: On another set of opposite side surfaces of the test tube support assembly, a side mounting plate (9) for fixing the test tube fixing assembly is provided; Both ends of the side mounting plate (9) in the length direction are connected to the mounting base (7).

9. The cover opening device according to any one of claims 4 to 8, characterized in that: The test tube fixing assembly comprises: Tube body clamps (10), the number of the tube body clamps (10) being at least two, being arranged in parallel and symmetrically on both sides of the arrangement direction of the test tubes (1), and being arranged along the arrangement direction of the plurality of test tubes (1); the two tube body clamps (10) having a clamping state in which they are driven to move toward each other to synchronously clamp and fix each of the test tubes (1), and a loosening state in which they are driven to move away from each other to synchronously loosen each of the test tubes (1); A tube body clamping jaw driving mechanism comprises: a clamping jaw driving source (11) and two driving sliders (12) that move towards or away from each other under the drive of the clamping jaw driving source (11); the two driving sliders (12) are respectively fixedly connected to the two tube body clamping jaws (10) to drive the tube body clamping jaws (10) to achieve clamping and loosening.

10. The cover opening device according to claim 9, characterized in that: The tube body clamp (10) comprises: a clamp block (13) mounted on the driving slider (12), and a clamp elastic member (14) fixed on the clamp block (13); the clamp block (13) is a hard strip structure, and the clamp elastic member (14) is arranged on a side of the clamp block (13) facing the test tube (1).

11. The cover opening device according to claim 9, characterized in that: The tube body clamp (10) comprises: a clamp block (13) or a clamp elastic member (14); the clamp block (13) or the clamp elastic member (14) is mounted on the driving slider (12); and a groove matching the shape of the tube body of the test tube (1) is provided on the clamp block (13) or the clamp elastic member (14).

12. The cover opening device according to any one of claims 4 to 8, characterized in that: The rotating clamp (3) comprises: A clamp (15) driven to clamp or release the tube cover (2); A clamp driving source (16) is connected to the clamp (15) through a rotating mechanism (17) to drive the clamp (15) to clamp or release the tube cover (2), and drives the tube cover (2) to rotate through the rotating mechanism (17) to tighten or loosen the tube cover (2); The tube cover limiting column (18) is arranged at the rotation center position of the rotating mechanism (17); during use, the tube cover limiting column (18) abuts against the center position of the tube cover (2) so that the test tube (1) is in a vertical position of the rotating clamp (3).

13. The cover opening device according to claim 12, characterized in that: The tube cover limiting column (18) is connected to the rotating mechanism (17) through an elastic element (21). Driven by the elastic element (21), the tube cover limiting column (18) moves in a telescopic manner to apply a pressing force toward the tube cover (2).

14. The cover opening device according to claim 12, characterized in that: The clamp (15) is used to clamp the tube cover (2) on the tube cover limiting block according to any one of claims 1 to 3, and the clamp (15) comprises: clamp bases (19) arranged opposite to each other, and clamping blocks (20) installed on the clamp bases (19) and adapted to the tube cover (2); at least two clamping blocks (20) are arranged on each clamp base (19) to adapt to different models of the tube covers (2); A clamping gap a is formed between the adjacent clamping blocks (20); there are at least two outer protrusions (803) of the limit block, and the clamping gap a is larger than the outer ring limit width b on the outer protrusion (803) of the limit block, thereby forming a grasping gap to avoid the movement stroke of the rotating clamp (3) when opening or clamping.

15. The cover opening device according to any one of claims 4 to 8, 9 and 12, characterized in that: The test tube support assembly is also provided with a tube cover temporary storage position (22) for storing the tube cover (2); the tube cover temporary storage position (22) is arranged on the limiting plate (5) at a position adjacent to the limiting hole (6); the tube cover temporary storage position (22) is the tube cover limiting block (8) according to any one of claims 1 to 3.

16. A method for using the cover opening device according to any one of claims 4 to 15, characterized in that: The following steps are involved: Step S1, the rotating clamp (3) grabs one or more test tubes (1) as needed, and sequentially transfers the test tubes (1) to the containing cavity formed by the limiting hole (6) of the limiting plate (5) and the supporting frame (4); Step S2, the test tube fixing assembly is driven to clamp and fix the test tube (1) on the limiting plate (5) to prevent the test tube (1) from rotating in its circumferential direction; Step S3, the rotating clamp (3) sequentially performs the opening action of the tube cover (2) of each of the test tubes (1) on the limiting plate (5), and places the tube covers (2) one by one in the tube cover temporary storage position (22) to complete the opening action; during the opening process, the rotating clamp (3) clamps the tube cover (2) and is driven to rotate and rise; Step S4, the test tube fixing component keeps clamping and fixing the test tube (1); The rotating clamp (3) sequentially removes the tube cover (2) on the tube cover temporary storage position (22), and performs a cover closing action on each of the test tubes (1) on the limiting plate (5) to complete the cover closing action; during the cover closing process, the rotating clamp (3) clamps the tube cover (2) and is driven to rotate and descend; Step S5, the test tube fixing assembly is driven to release the test tube (1) on the limiting plate (5); the rotating clamp (3) grabs the test tube (1) and moves it to the initial position.

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