Sample tube cover removing device

Abstract

The utility model belongs to the technical field of laboratory equipment, and relates to a sample tube cover removing device. The cover removing device comprises a machine frame, a lifting mechanism, a cover removing mechanism and a clamping mechanism, the lifting mechanism is installed on the machine frame, the cover removing mechanism is installed on the lifting mechanism, the lifting mechanism can drive the cover removing mechanism to ascend and descend, the clamping mechanism is arranged below the cover removing mechanism, and the clamping mechanism is used for clamping the cover removing mechanism. The clamping mechanism comprises a first pipe clamping jaw, a second pipe clamping jaw and a driving plate, the driving plate is installed on the lifting mechanism and can ascend and descend along with the lifting mechanism, and the driving plate can drive the first pipe clamping jaw and the second pipe clamping jaw to be close to each other. According to the sample tube cover removing device, the linkage effect of multiple actions is achieved through driving of one motor, the sample tube cover removing device is simple in structure and low in manufacturing cost, and the cover removing process which is smooth in linkage can be achieved through the sample tube cover removing device.

Description

Technical Field

[0001] This utility model relates to a sample tube cap removal device, belonging to the field of laboratory equipment technology. Background Technology

[0002] In the field of medical diagnostics and analysis, collecting and analyzing blood samples is a common procedure. Modern medical practice widely uses vacuum blood collection tubes to collect and preserve samples. These tubes draw blood from patients within a pre-set vacuum environment, avoiding contamination from external operations and improving the efficiency and safety of sample collection. However, after collection and before entering the laboratory for analysis, the cap on the sample tube needs to be removed so that laboratory testing instruments can directly extract the sample for subsequent analysis.

[0003] In existing cap removal devices, the sample tube capping operation is achieved by clamping and rotating the sample tube cap to lift and remove it. However, existing cap removal devices have some drawbacks:

[0004] First, the sample tube cap removal device, sample tube clamping device, and waste cap collection are independent systems, each driven by its own motor. This not only increases the complexity and manufacturing cost of the equipment, but may also lead to poor coordination during operation, affecting work efficiency.

[0005] Furthermore, the complex structure, relatively large overall size and weight of existing cap removal devices limit their application in fully automated production lines.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present invention, and therefore may include information that does not constitute prior art. Utility Model Content

[0007] The purpose of this utility model is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0008] The technical solution provided by this utility model is as follows: A sample tube cap removal device includes a frame, a lifting mechanism, a clamping mechanism, and at least one set of cap removal mechanisms. The lifting mechanism is mounted on the frame, and the cap removal mechanisms are mounted on the lifting mechanism. The lifting mechanism can drive the cap removal mechanisms to rise and fall. The clamping mechanism is located below the cap removal mechanisms. The clamping mechanism includes a drive plate and at least one pair of tube clamping claws. Each pair of tube clamping claws includes a first tube clamping claw and a second tube clamping claw. The drive plate is mounted on the lifting mechanism and can rise and fall with the lifting mechanism. The drive plate can drive the first tube clamping claw and the second tube clamping claw to move closer to each other.

[0009] Compared with the prior art, the technical solution provided by this utility model has the following advantages: The lifting mechanism enables the coordinated operation of the device. During the descent of the lifting mechanism, the drive plate synchronously drives the first and second tube clamping jaws to move closer together, thereby clamping the sample tube. This utility model not only has a simple structure and low manufacturing cost, but also provides a smooth process for removing the cap.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the clamping mechanism also includes a gripper linkage plate, a first return spring, and a second return spring. The second clamping gripper is located between the first clamping gripper and the gripper linkage plate. When the drive plate moves downward to the gap between the second clamping gripper and the gripper linkage plate, the first clamping gripper and the second clamping gripper move closer to each other under the squeezing action of the drive plate. The first return spring is used to provide a spring force to move the first clamping gripper in a first direction, and the second return spring is used to provide a spring force to move the second clamping gripper in a direction opposite to the first direction.

[0012] Furthermore, the first tube clamp and the clamp linkage plate are respectively installed at both ends of the first slide, the second tube clamp is installed on the second slide, and the first slide and the second slide are slidably installed on the base of the frame.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the gripper linkage plate and the first tube gripper are mounted on the same slide, and the second tube gripper is positioned between the first tube gripper and the gripper linkage plate. The first and second return springs provide a reset function for the slide, enabling it to quickly return to its initial position after the drive plate is removed. When the drive plate moves downward and inserts between the second tube gripper and the gripper linkage plate, the first tube gripper and the gripper linkage plate move synchronously and in the same direction, while the second tube gripper moves in the opposite direction. This relative movement allows the first and second tube grippers to approach each other and clamp the sample tube. This utility model achieves a linkage effect between the clamping action and the cap removal action. When the lifting mechanism drives the cap removal mechanism and the drive plate to descend, the drive plate first drives the gripper to perform the clamping action, and then the cap removal mechanism performs the cap removal action. Throughout the process, the clamping and cap removal actions are coordinated and seamlessly connected, thereby greatly improving the working efficiency and accuracy of the cap removal device.

[0014] Furthermore, the first clamping jaw is provided with a first chuck, and the second clamping jaw is provided with a second chuck. The first chuck and the second chuck are both provided with clamping grooves on opposite sides.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the shape of the clamping groove matches the outer contour of the sample tube, which not only increases the contact area between the clamp and the outer surface of the sample tube, thereby improving the stability of clamping, but also enables more precise positioning of the sample tube.

[0016] Furthermore, the first chuck is mounted on the first tube clamping jaw via an elastic element, and the second chuck is also mounted on the second tube clamping jaw via an elastic element.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the elastic element enables the clamp to extend and adjust to a certain extent according to the size of the sample tube. When the clamp holds sample tubes of different diameters, the elastic element can absorb and alleviate the clamping force caused by the size difference, thereby ensuring that the clamp can hold the sample tube tightly and stably, avoiding the problem of clamping loosening or falling off due to size mismatch.

[0018] Furthermore, the second clamping jaw and the clamping jaw linkage plate are also provided with rollers.

[0019] The beneficial effect of adopting the above-mentioned further solution is that by installing rollers, the frictional resistance between the drive plate and the second clamping jaw and the clamping jaw linkage plate is reduced. When the drive plate descends and inserts into this gap, the rollers can roll and contact the surface of the drive plate, thereby reducing sliding friction.

[0020] Furthermore, it also includes a cover receiving mechanism, which includes a linkage cover receiving groove, an inclined slide rail, and a guide wheel. The linkage cover receiving groove is provided with lifting rods on both sides. The linkage cover receiving groove is slidably installed on the inclined slide rail. The guide wheel can rise and fall with the lifting mechanism. The lifting rod is provided with a guide groove, and the guide wheel is located in the guide groove.

[0021] The beneficial effect of adopting the above-mentioned further solution is that when the lifting mechanism rises, the linkage cap receiving groove, guided by the slide rail and the guide wheel, moves obliquely upward to below the cap removal mechanism, ready to receive the cap. When the lifting mechanism descends, the linkage cap receiving groove moves obliquely downward, not blocking the cap removal path of the cap removal mechanism. The cap receiving mechanism can not only automatically receive the peeled cap, but also the addition of the cap receiving mechanism makes the function of the sample tube cap removal device more complete, realizing the linkage of the three actions of cap removal, clamping and cap receiving of the sample tube cap removal device. Only by starting the lifting mechanism, a series of operations such as cap removal, clamping and cap receiving of the sample tube can be completed automatically, improving work efficiency and user experience.

[0022] Furthermore, the cover receiving mechanism also includes a fixed cover receiving groove, which is fixed on the frame. The frame is provided with a cover outlet. The cover inlet section of the fixed cover receiving groove is connected to the linkage cover receiving groove, and the cover outlet section of the fixed cover receiving groove is connected to the cover outlet.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the fixed cap groove provides a stable receiving and temporary storage space for the tube cap. When the linkage cap groove transfers the peeled tube cap to the fixed cap groove, the tube cap will move along the fixed cap groove towards the cap outlet. Finally, the user can conveniently collect and remove these tube caps from the cap outlet.

[0024] Furthermore, it also includes a straightening bridge, which is disposed on the frame and located between the first tube clamp and the second tube clamp. The straightening bridge includes a first straightening baffle and a second straightening baffle, which are spaced apart.

[0025] The beneficial effect of adopting the above-mentioned further solution is that when the carrier carrying the sample tube approaches the sample tube decapping device along the conveyor line, the bottom of the carrier slides from one end of the correction bridge to the clamping position in the middle of the correction bridge. During the movement, the carrier can be accurately positioned to the predetermined position, which improves the clamping stability of the sample tube decapping device on the carrier.

[0026] Furthermore, the back plate of the frame is also provided with a guide rail, and the drive plate is provided with a slider, which is installed in conjunction with the guide rail.

[0027] The beneficial effect of adopting the above-mentioned further solution is that it enables the drive plate to move smoothly along the guide rail during the lifting process, thereby improving the stability and accuracy of the equipment.

[0028] Furthermore, the bottom of the drive plate is arrow-shaped or inverted cone-shaped.

[0029] The beneficial effect of adopting the above-mentioned further solution is that the bottom of the drive plate is arrow-shaped or inverted cone-shaped, which can drive the first slide and the second slide to move smoothly, ensuring the stability and accuracy of the slide during the movement. The slide can smoothly transition when it is subjected to driving force, avoiding the impact and vibration caused by sudden force.

[0030] A method for removing the cap from the sample tube using the aforementioned sample tube cap removal device comprises the following steps:

[0031] In the initial state, the lifting mechanism drives the cover removal mechanism and the drive plate to rise to the preset high position.

[0032] The sample tubes to be processed are transported by a carrier to the clamping position of the capping device;

[0033] The lifting mechanism is activated, which drives the cap removal mechanism and the drive plate to descend. The drive plate drives the first and second tube clamping jaws to clamp the sample tube. The cap removal mechanism performs the cap removal action to open the cap on the sample tube.

[0034] After the cap is removed, the lifting mechanism rises and drives the cap removal mechanism and the drive plate back to the high position; during this process, the first and second tube clamping jaws release their grip on the sample tube.

[0035] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: The entire cap removal process of this utility model is completed by the lifting mechanism and the drive plate in coordination, realizing the automatic clamping, cap removal and release operation of the sample tube without manual intervention, which greatly improves work efficiency and automation, and reduces the difficulty and complexity of operation.

[0036] Furthermore, when the lifting mechanism drives the cap removal mechanism and the drive plate to rise, the linkage cap receiving groove slides obliquely upward along the inclined slide rail to directly below the cap removal mechanism, ready to receive the removed pipe cap; when the lifting mechanism drives the cap removal mechanism and the drive plate to fall, the linkage cap receiving groove slides obliquely downward along the inclined slide rail, moving to a position that does not block the cap removal mechanism.

[0037] The beneficial effect of adopting the above-mentioned further solution is that the linkage receiving groove can move directly under the cap removal mechanism by sliding along the inclined slide rail. When the cap removal mechanism performs the cap removal action, the peeled cap can fall smoothly into the linkage receiving groove and be effectively received. At the same time, this utility model also realizes the synchronous linkage of the three key actions of clamping, cap removal and cap receiving, thereby greatly improving the efficiency, stability and reliability of the entire cap removal process. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the sample tube cap removal device of this utility model;

[0040] Figure 2 This is a schematic diagram of the internal structure of the sample tube cap removal device of this utility model.

[0041] Figure 3 This is a side view of the sample tube cap removal device of this utility model;

[0042] Figure 4This is a three-dimensional structural diagram of the sample tube cap removal device of this utility model from a rear view angle.

[0043] Figure 5 This is a three-dimensional structural diagram of the clamping mechanism of Embodiment 1 of this utility model from a frontal view angle.

[0044] Figure 6 This is a three-dimensional structural diagram of the clamping mechanism in Embodiment 1 of this utility model from a rear view angle.

[0045] Figure 7 This is a side view of the clamping mechanism according to Embodiment 1 of this utility model;

[0046] Figure 8 This is a three-dimensional structural diagram of the corrective bridge of this utility model;

[0047] Figure 9 The lifting mechanism of this utility model drives the cover removal mechanism and the drive plate to rise to a preset high position.

[0048] Figure 10 For the present utility model Figure 9 Side view;

[0049] Figure 11 This is a diagram showing the state of the lifting mechanism of this utility model driving the cap removal mechanism and the drive plate to descend to the cap removal position;

[0050] Figure 12 This is a schematic diagram of the clamping mechanism according to Embodiment 2 of this utility model;

[0051] Figure 13 This is a schematic diagram of the clamping mechanism according to Embodiment 3 of this utility model;

[0052] Figure 14 This is a structural schematic diagram of the clamping mechanism of Embodiment 3 of this utility model from another perspective;

[0053] Figure 15 This is a front view of the clamping mechanism according to Embodiment 3 of this utility model;

[0054] Figure 16 A schematic diagram of the structure of the sample tube capping device of this utility model, which is equipped with two sets of capping mechanisms;

[0055] In the diagram, 100 is the frame; 101 is the base; 102 is the back plate; 103 is the side plate; 200 is the lifting mechanism; 201 is the motor; 300 is the cover removal mechanism; and 301 is the cover clamp.

[0056] 400. Clamping mechanism; 401. First tube clamping jaw; 402. Second tube clamping jaw; 403. Clamping jaw linkage plate; 404. Tube clamping groove; 405. Drive plate; 406. First slide block; 407. Second slide block; 408. First return spring; 409. Second return spring; 410. Roller; 411. Guide rail; 412. Slider; 413. Gear; 414. Rack;

[0057] 501. Linkage cover groove; 502. Inclined slide rail; 503. Guide wheel; 504. Lifting rod; 506. Fixed cover groove;

[0058] 600. Corrective bridge; 601. First corrective baffle; 602. Second corrective baffle;

[0059] 800. Assembly line connector; 900. Vehicle. Detailed Implementation

[0060] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and do not imply any priority in order or any specific technical meaning. Furthermore, the concepts of "connection" and "linkage" mentioned in this application, unless otherwise specified, are considered to include both direct connection (linkage) and indirect connection (linkage).

[0061] When interpreting the description of this application, it should be clarified that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating directions or positional relationships, are based on the perspective and layout shown in the accompanying drawings. They are intended to facilitate explanation and simplify the description process, and are not absolute limitations on the actual location, construction method, or operating mode of the described device or element. Therefore, these terms should not be construed as restrictive interpretations of the content of this application.

[0062] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0063] Example 1:

[0064] like Figures 1-8As shown, a sample tube decapping device includes a frame 100, a lifting mechanism 200, a clamping mechanism 400, and at least one set of decapping mechanisms 300. The lifting mechanism 200 is mounted on the frame 100, and the decapping mechanisms 300 are mounted on the lifting mechanism 200. The lifting mechanism 200 can drive the decapping mechanisms 300 to rise and fall. The clamping mechanism 400 is located below the decapping mechanisms 300. The clamping mechanism 400 includes a drive plate 405 and at least one pair of tube clamping claws. The number of tube clamping claws matches the number of decapping mechanisms 300. Each pair of tube clamping claws includes a first tube clamping claw 401 and a second tube clamping claw 402. The drive plate 405 is mounted on the lifting mechanism 200 and can rise and fall with the lifting mechanism 200. The drive plate 405 can drive the first tube clamping claw 401 and the second tube clamping claw 402 to move closer to each other, thereby clamping the sample tube.

[0065] In addition, in this embodiment, the clamping mechanism 400 further includes a gripper linkage plate 403, a first return spring 408, and a second return spring 409. The first gripper 401 and the gripper linkage plate 403 are respectively installed at both ends of the first slide 406. The second gripper 402 is installed on the second slide 407, and the second gripper 402 is located between the first gripper 401 and the gripper linkage plate 403. The first return spring 408 is connected between the first slide 406 and the base 101 of the frame 100. The first return spring 408 is used to provide a spring force that moves the first slide 406 relative to the base 101 in a first direction. The second return spring 409 is connected between the second slide 407 and the base 101. The second return spring 409 is used to provide a spring force that moves the second slide 407 relative to the base 101 in a direction opposite to the first direction, so that the second slide 407 can move in the opposite direction. It should be noted that "first direction" does not refer to a specific, fixed direction. The concept of "first direction" is mainly for the convenience of describing and distinguishing the movement direction of the first slide 406 and the second slide 407 relative to the frame base 101. In practical applications, this "first direction" can be any direction, depending on the overall layout and design requirements of the device. Figure 7 In this configuration, the first return spring 408 can cause the first slide 406 and the first clamping jaw 401 mounted thereon to move to the left relative to the base 101; the second return spring 409 can cause the second slide 407 and the second clamping jaw 402 mounted thereon to move to the right relative to the base 101.

[0066] In this embodiment, the lifting mechanism 200 is equipped with a set of cap removal mechanisms 300, and the clamping mechanism 400 includes a pair of tube clamping jaws, suitable for scenarios where a single sample tube is processed at a time. In another embodiment, such as... Figure 16 As shown, the lifting mechanism 200 is equipped with two sets of cap removal mechanisms 300, which are spaced apart and can process two sample tubes simultaneously. Correspondingly, the clamping mechanism 400 is also extended, including two pairs of clamping jaws. The first clamping jaws 401 of both pairs are mounted on the first slide 406, and the second clamping jaws 402 of both pairs are mounted on the second slide 407. During cap removal, the two pairs of clamping jaws cooperate with their respective cap removal mechanisms 300 to clamp the sample tubes. The simultaneous cap removal of multiple sample tubes is achieved through a single lifting mechanism, improving processing efficiency and saving costs.

[0067] The clamping linkage plate 403 and the first tube clamping claw 401 are mounted on the same slide, ensuring that the first tube clamping claw 401 and the clamping linkage plate 403 can move synchronously and in the same direction. Simultaneously, the second tube clamping claw 402 is positioned between the first tube clamping claw 401 and the clamping linkage plate 403. When the drive plate 405 moves downward and inserts into the gap between the second tube clamping claw 402 and the clamping linkage plate 403, under the squeezing action of the drive plate 405, the first slide 406 and the first tube clamping claw 401 and the clamping linkage plate 403 mounted thereon move synchronously to the right. Simultaneously, the second slide 407 and the second tube clamping claw 402 mounted thereon move to the left. The first tube clamping claw 401 and the second tube clamping claw 402 move closer to each other, thereby clamping the sample tube. The first reset spring 408 and the second reset spring 409 provide a reset function for the two slides respectively. When the drive plate 405 moves upward and leaves the gap between the second clamping jaw 402 and the jaw linkage plate 403, the two reset springs pull the first slide 406 and the second slide 407 to move in opposite directions, thereby driving the first reset spring 408 and the second reset spring 409 to return to their initial positions.

[0068] In addition, in this embodiment, the bottom of the drive plate 405 is arrow-shaped or inverted cone-shaped, which can drive the first slide 406 and the second slide 407 to move smoothly, ensuring the stability and accuracy of the slide during the movement. The slide can smoothly transition when it is subjected to driving force, avoiding the impact and vibration caused by sudden force.

[0069] The first clamping jaw 401 is provided with a first chuck, and the second clamping jaw 402 is provided with a second chuck. A clamping groove 404 is provided on the opposite side of both the first and second chucks. The shape of the clamping groove 404 matches the outer contour of the sample tube, which not only increases the contact area between the chuck and the outer surface of the sample tube, thereby improving the stability of the clamping, but also enables more precise positioning of the sample tube.

[0070] An elastic element is provided between the first clamp and the first clamping jaw 401, and an elastic element is also provided between the second clamp and the second clamping jaw 402. The elastic element allows the clamp to extend and adjust to a certain extent according to the size of the sample tube. When the jaws hold sample tubes of different diameters, the elastic element can absorb and alleviate the clamping force caused by the size difference, thereby ensuring that the jaws can tightly and stably clamp the sample tube, avoiding problems of loosening or falling off due to size mismatch. The embodiments of this utility model do not limit the type of the elastic element; the elastic element can be a spring, sheet metal, rubber block, or any material or structure that can provide restoring force and elasticity.

[0071] The second clamping jaw 402 and the clamping jaw linkage plate 403 are also provided with rollers 410. By installing rollers 410, the frictional resistance of the drive plate 405 when it is inserted between the second clamping jaw 402 and the clamping jaw linkage plate 403 is reduced. When the drive plate 405 descends and inserts into this gap, the rollers 410 can roll and contact the surface of the drive plate 405, thereby reducing sliding friction.

[0072] The sample tube cap removal device also includes a cap receiving mechanism, which includes a linkage cap receiving groove 501, an inclined slide rail 502, and a guide wheel 503. The linkage cap receiving groove 501 has lifting rods 504 on both sides. The inclined slide rail 502 is mounted on the side plates 103 of the frame 100. The linkage cap receiving groove 501 is slidably mounted on the inclined slide rail 502. The guide wheel 503 can rise and fall with the lifting mechanism 200. The lifting rods 504 have guide grooves, and the guide wheel 503 is located within these guide grooves. When the lifting mechanism 200 rises, the linkage cap receiving groove 501, guided by the guide wheel 503, can move obliquely upwards along the slide rail to below the cap removal mechanism 300, ready to receive the peeled cap. When the lifting mechanism 200 descends, the guide wheel 503 guides the linkage cap receiving groove 501 to move obliquely downwards along the slide rail, ensuring it does not obstruct the normal operation of the cap removal mechanism 300. When the linkage cap groove 501 moves obliquely upward along the slide rail and reaches below the mechanism of the cap removal mechanism 300, the linkage cap groove 501 approaches the cap clamping claw 301 of the cap removal mechanism 300, and the cap can gently fall from the cap clamping claw 300 onto the linkage cap groove 501. Since the linkage cap groove 501 is in an inclined state, it can reduce the splashing of liquid adhering to the cap due to collision.

[0073] In this embodiment, the guide wheels 503 are installed on both sides of the drive plate 405. Of course, the guide wheels 503 can also be installed in other positions. As long as they can rise and fall with the lifting mechanism 200 and guide the linkage cover groove 501 to move on the slide rail, they should be within the protection scope of this utility model.

[0074] The cap receiving mechanism also includes a fixed cap receiving groove 506, which is fixed to the frame 100. The frame 100 has a cap outlet. The cap inlet section of the fixed cap receiving groove 506 communicates with the linkage cap receiving groove 501, and the cap outlet section of the fixed cap receiving groove 506 communicates with the cap outlet. When the linkage cap receiving groove 501 transfers the peeled cap to the fixed cap receiving groove 506, the cap will move along the fixed cap receiving groove 506 towards the cap outlet. Finally, the user can conveniently collect and remove these caps from the cap outlet. The cap outlet can be set on the base 101 or back plate 102 of the frame, allowing the discarded sample caps to slide out towards a position away from the cap removal operation. A detection sensor can also be set at the cap outlet position to detect the discarded sample caps.

[0075] The sample tube capping device further includes a correction bridge 600, which is disposed on the frame 100 and located between the first tube clamping jaw 401 and the second tube clamping jaw 402. The correction bridge 600 includes a first correction baffle 601 and a second correction baffle 602, which are spaced apart. A positioning surface is provided between the first correction baffle 601 and the second correction baffle 602 for positioning the carrier 900. The two ends of the first correction baffle 601 and the second correction baffle 602 form flared openings to facilitate the smooth entry and exit of the carrier 900 from both ends of the correction bridge 600. As the carrier 900 carrying the sample tubes moves along the conveyor line toward the sample tube capping device, the bottom of the carrier 900 will naturally slide into the flared opening at one end of the correction bridge 600 until it reaches the clamping position in the middle of the correction bridge 600. During the movement, the carrier 900 can be accurately positioned to the clamping position, which improves the clamping stability of the sample tube capping device on the carrier 900.

[0076] The lifting mechanism 200 includes a motor 201 and a lead screw and nut assembly. The lead screw and nut assembly includes a lead screw and a nut pair. The lead screw is driven to rotate by the motor 201 and cooperates with the nut pair for transmission. The drive plate 405 and the cover removal mechanism 300 are both mounted on the nut pair.

[0077] The cap removal mechanism 300 includes at least two cap clamping jaws 301. The two clamping jaws 301 can approach each other to clamp and open the cap, either by rotation or by pulling it open. After the cap is opened, the clamping jaws 301 can move in the opposite direction to release the cap. The cap removal mechanism 300 can use commercially available electric rotary clamps.

[0078] The back plate 102 of the frame 100 is also provided with a guide rail 411, and the drive plate 405 is provided with a slider 412. The slider 412 is installed in conjunction with the guide rail 411, and the drive plate 405 can move smoothly along the guide rail 411 during the lifting process.

[0079] The bottom of the frame 100 is also provided with a production line connector 800, which is used to install on an external production line. The sample tube decapping device can be integrated with the production line system to achieve automated production line docking. One or more decapping devices can be set around the perimeter of the production line, and multiple decapping devices can share one production line connector 800.

[0080] A method for removing the cap from the sample tube using the aforementioned sample tube cap removal device comprises the following steps:

[0081] refer to Figure 9 and Figure 10In the initial state, the lifting mechanism 200 drives the cap removal mechanism 300 and the drive plate 405 to rise to the preset high position, and the cap receiving groove 501 moves obliquely upward along the inclined slide rail 502 to below the cap removal mechanism 300.

[0082] The sample tube to be processed is moved on the conveyor line by the carrier 900 to the clamping position of the capping device. During this process, the carrier 900 is guided by the correction bridge 600 to ensure that it accurately reaches the clamping position.

[0083] The lifting mechanism 200 is activated, causing the cap removal mechanism 300 and the drive plate 405 to descend. The drive plate 405 drives the first tube clamping jaw 401 and the second tube clamping jaw 402 to clamp the sample tube. Simultaneously, the linkage cap receiving groove 501 moves diagonally downwards along the inclined slide rail 502 to a position that does not obstruct the cap removal mechanism 300. Then, the cap removal mechanism 300 performs the cap removal action, opening the cap on the sample tube. (Refer to...) Figure 11 ;

[0084] After the cap removal is completed, the lifting mechanism 200 rises and drives the cap removal mechanism 300 and the drive plate 405 back to the high position; during this process, the first tube clamping claw 401 and the second tube clamping claw 402 release their grip on the sample tube; at the same time, the linkage cap receiving groove 501 moves obliquely upward along the inclined slide rail 502 to directly below the cap removal mechanism 300, ready to receive the removed tube cap.

[0085] The cap removal mechanism 300 releases the pipe cap, which falls into the linkage cap receiving groove 501, completing the cap removal process and the collection of the pipe cap.

[0086] This invention requires only one motor 201 in the lifting mechanism 200 to simultaneously realize the three key actions of clamping, removing the cap, and attaching the cap of the sample tube. This invention cleverly utilizes the mechanical linkage principle to enable the three actions to work closely together and move in sync, thereby ensuring the smoothness and efficiency of the entire cap removal process.

[0087] Example 2:

[0088] like Figure 12 As shown, the clamping mechanism 400 in this embodiment is different from that in the first embodiment. In this embodiment, the first slide 406 and the second slide 407 are also provided with racks, and a gear 413 is rotatably mounted on the base 101 of the frame 100, and the gear 413 meshes with the racks 414 on the first slide 406 and the second slide 407.

[0089] When the drive plate 405 moves downward and inserts into the gap between the second tube clamping jaw 402 and the clamping jaw linkage plate 403, the drive plate 405 can push the first tube clamping jaw 401 and the second tube clamping jaw 402 closer together, thereby clamping the sample tube. The first return spring 408 and the second return spring 409 provide a reset function for the slide block. When the drive plate 405 moves upward and leaves the gap between the second tube clamping jaw 402 and the clamping jaw linkage plate 403, the two return springs pull the first slide block 406 and the second slide block 407 back to their initial positions.

[0090] The meshing structure of the gear 413 and rack 414 can ensure that the first slide 406 and the second slide 407 move smoothly in a predetermined direction.

[0091] Example 3:

[0092] like Figures 13-15 As shown, the clamping mechanism 400 in this embodiment differs from that in Embodiment 1. In this embodiment, the first tube clamping jaw 401 and the second tube clamping jaw 402 are respectively disposed on the first slide 406 and the second slide 407. The first slide 406 and the second slide 407 are slidably mounted on the base 101, and the jaw linkage plate 403 is fixedly mounted on the base 101 of the frame 100 adjacent to the second tube clamping jaw 402. Both the first slide 406 and the second slide 407 are provided with racks 417, and gears 413 are rotatably mounted on the base 101 of the frame 100 and mesh with the racks 414 on the first slide 406 and the second slide 407. The first slide 406 is connected to the base 101 of the frame 100 via a first return spring 408. The first return spring 408 provides a leftward elastic force for the first slide 406. Correspondingly, the second slide 407 is connected to the base 101 of the frame 100 via a second return spring 409. The second return spring 409 provides a rightward elastic force for the second slide 407, which is opposite to the direction of movement of the first slide 406.

[0093] When the drive plate 405 is inserted downwards into the gap between the second tube clamping jaw 402 and the clamping jaw linkage plate 403, the second slide 407 moves to the left under the squeezing action of the drive plate 405. Since the gear 413 meshes with the rack 414 on the two slides, the movement of the second slide 407 will drive the gear 413 to rotate, thereby driving the first slide 406 and the first tube clamping jaw 401 mounted on it to move to the right. In this way, the first tube clamping jaw 401 and the second tube clamping jaw 402 will move closer to each other, realizing the clamping of the sample tube. When the drive plate 405 moves upwards and leaves the gap between the second tube clamping jaw 402 and the clamping jaw linkage plate 403, the two return springs pull the first slide 406 and the second slide 407 back to their initial positions.

[0094] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sample tube cap removal device, characterized in that, The device includes a frame (100), a lifting mechanism (200), a clamping mechanism (400), and at least one set of cap removal mechanisms (300). The lifting mechanism (200) is mounted on the frame (100), and the cap removal mechanism (300) is mounted on the lifting mechanism (200). The lifting mechanism (200) can drive the cap removal mechanism (300) to move up and down. The clamping mechanism (400) is located below the cap removal mechanism (300). The clamping mechanism (400) includes a drive plate (405) and at least one pair of tube clamping jaws. Each pair of tube clamping jaws includes a first tube clamping jaw (401) and a second tube clamping jaw (402). The drive plate (405) is mounted on the lifting mechanism (200) and can move up and down with the lifting mechanism (200). The drive plate (405) can drive the first tube clamping jaw (401) and the second tube clamping jaw (402) to move closer to each other.

2. The sample tube cap removal device according to claim 1, characterized in that, The clamping mechanism further includes a gripper linkage plate (403), a first return spring (408), and a second return spring (409). The second clamping jaw (402) is located between the first clamping jaw (401) and the gripper linkage plate (403). When the drive plate (405) moves downward to the gap between the second clamping jaw (402) and the gripper linkage plate (403), the first clamping jaw (401) and the second clamping jaw (402) move closer to each other under the squeezing action of the drive plate (405). The first return spring (408) is used to provide a spring force to move the first clamping jaw (401) in a first direction, and the second return spring (409) is used to provide a spring force to move the second clamping jaw (402) in a direction opposite to the first direction.

3. The sample tube cap removal device according to claim 2, characterized in that, The first tube clamping claw (401) and the claw linkage plate (403) are respectively installed at both ends of the first slide (406), the second tube clamping claw (402) is installed on the second slide (407), and the first slide (406) and the second slide (407) are slidably installed on the base (101) of the frame (100).

4. The sample tube cap removal device according to claim 1, characterized in that, The first clamping jaw (401) is provided with a first clamp, and the second clamping jaw (402) is provided with a second clamp. The first clamp and the second clamp are provided with clamping grooves (404) on opposite sides.

5. The sample tube cap removal device according to claim 4, characterized in that, The first chuck is mounted on the first tube clamp (401) via an elastic element, and the second chuck is also mounted on the second tube clamp (402) via an elastic element.

6. The sample tube cap removal device according to claim 2, characterized in that, The second clamping claw (402) and the clamping claw linkage plate (403) are also provided with rollers (410).

7. The sample tube cap removal device according to claim 1, characterized in that, It also includes a cover receiving mechanism, which includes a linkage cover receiving groove (501), an inclined slide rail (502), and a guide wheel (503). The linkage cover receiving groove (501) is provided with a lifting rod (504). The linkage cover receiving groove (501) is slidably installed on the inclined slide rail (502). The guide wheel (503) can rise and fall with the lifting mechanism (200). The lifting rod (504) is provided with a guide groove, and the guide wheel (503) is located in the guide groove.

8. The sample tube cap removal device according to claim 7, characterized in that, The cover receiving mechanism further includes a fixed cover receiving groove (506), which is fixed on the frame (100). The frame (100) is provided with a cover outlet. The cover inlet section of the fixed cover receiving groove (506) is connected to the linkage cover receiving groove, and the cover outlet section of the fixed cover receiving groove (506) is connected to the cover outlet.

9. The sample tube cap removal device according to claim 1, characterized in that, It also includes a straightening bridge (600), which is disposed on the frame (100) and located between the first tube clamp (401) and the second tube clamp (402). The straightening bridge (600) includes a first straightening baffle (601) and a second straightening baffle (602), which are spaced apart.

10. The sample tube cap removal device according to claim 1, characterized in that, The back plate (102) of the frame (100) is also provided with a guide rail (411), and the drive plate (405) is provided with a slider (412), which is installed in conjunction with the guide rail (411).

11. The sample tube cap removal device according to claim 1, characterized in that, The bottom of the drive board (405) is arrow-shaped or inverted cone-shaped.

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