Test tube opening and closing cover chuck and equipment thereof

Abstract

A test tube opening and closing cover chuck at least comprises two oppositely-arranged clamping jaws, a clamping space is formed between the two clamping jaws, each clamping jaw comprises a connecting base, the connecting base extends downwards in the circumferential direction of the clamping space to form at least four jaw columns, and every two adjacent jaw columns are connected to the clamping space to form the same angle; when the cover of the small test tube is opened and closed, the claw columns with small relative distance in the middle of the clamping claws clamp the tube cover of the small test tube; and when the cover of the large test tube is opened and closed, the claw columns which are positioned on two sides of the clamping claw and have large relative distance clamp the tube cover of the large test tube. When the cover opening and closing device is applied, the cover opening and closing requirements of small test tubes and large test tubes can be met, the cover closing failure rate caused by cover deformation is reduced, and the cover opening and closing requirements of test tubes of different manufacturers can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to reagent sample tube uncapping technical field especially relates to a test tube opening and closing cover chuck and equipment thereof. BACKGROUND

[0002] Microbial sample processing is widely used for colony inoculation, culture, separation and detection, and is an important work in medical health, inspection and quarantine, disease control and food safety. In the existing microbial sample pretreatment and culture, pretreatment is often needed, and then streaking and manual placing in an incubator are carried out, which consumes a lot of manpower and material resources. Moreover, the biological safety risk coefficient is high when the sample is opened manually to dip the sample.

[0003] In the automatic sample pretreatment, different sizes of test tubes and test tubes from different manufacturers need to be used. Different specifications of chucks are needed to rotate different test tubes to open and close the cover. At present, in the automatic instrument, the opening and closing of the cover are usually carried out by using the form of 2-column clamping jaws. However, in test tubes from different manufacturers, the quality of the test tubes is different, especially when the size of the test tube is large, the clamping jaws cause the cover to deform seriously and fail to close the cover. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the background art, the utility model aims to provide a test tube opening and closing cover chuck and equipment thereof.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A test tube opening and closing cover chuck at least comprises two oppositely arranged clamping jaws, a clamping space is formed between the two clamping jaws, the clamping jaw comprises a connecting seat, at least four jaw columns extend downward around the circumferential direction of the clamping space, and the angle formed by the connection of the two adjacent jaw columns to the clamping space is the same.

[0007] When a small test tube is opened and closed, the jaw columns with small relative spacing located at the middle position of the clamping jaw clamp the cover of the small test tube; when a large test tube is opened and closed, the jaw columns with large relative spacing located at both sides of the clamping jaw clamp the cover of the large test tube.

[0008] Further, the angle formed by the connection of the two adjacent jaw columns to the clamping space is the same.

[0009] Further, the outer circumferential surface of the jaw column is provided with a clamping convex part matched with the test tube cover along the axial direction thereof, and the clamping convex part is matched with the outer edge of the test tube cover.

[0010] Further, the end of the jaw column is provided with a rubber head, and a plurality of silica gel convex points are distributed on the surface of the rubber head.

[0011] Further, the rubber head is embedded with a pressure sensor for real-time feedback of clamping force.

[0012] A test tube opening and closing cover device comprises the test tube opening and closing cover clamp, and further comprises a shell, wherein the shell is provided with a first driving device, the output end of the first driving device is drivingly connected with a rotating frame, the rotating frame is provided with a second driving device, and the output ends of the second driving device are respectively drivingly connected with the two clamping jaws.

[0013] Further, the output end of the second driving device comprises a first sliding block and a second sliding block, and the moving direction of the first sliding block is reversely arranged with the moving direction of the second sliding block.

[0014] Further, the first sliding block and the second sliding block are respectively connected with the two clamping jaws through mounting blocks.

[0015] Further, the rotating frame is provided with a visual sensor at the top, which is used for identifying the size of the test tube and automatically adjusting the opening and closing distance of the clamping jaws.

[0016] Further, the shell is integrated with a controller, and the controller is signal-connected with the first driving device, the second driving device, the pressure sensor and the visual sensor.

[0017] The utility model discloses a beneficial effect is:

[0018] 1. The utility model provides a test tube opening and closing cover clamp, changes the clamping jaw to 4 column 45 DEG structure, can satisfy the opening and closing of small test tube, also satisfies the opening and closing requirement of big test tube, and the failure rate of the deformation of cover leading to closing is reduced, and the opening and closing of the test tube of different manufacturers can be satisfied.

[0019] 2. The utility model provides a test tube opening and closing cover clamp, through the setting of jaw column, the clamping jaw keeps uniform stress in the opening and closing process, guarantees that the clamping center is always aligned with the central axis of test tube cover, makes single clamp can be adapted to the test tube cover of 10-30mm diameter, need not to change the fixture, and the general property of equipment is improved significantly.

[0020] 3. The utility model provides a test tube opening and closing cover clamp, through the setting of the clamping convex part of jaw column outer surface, the clamping convex part of jaw column outer surface is embedded with test tube cover anti -skid line, especially suitable for smooth plastic material, reduces the slip rate.

[0021] 4. The utility model provides a test tube opening and closing cover device, through the setting of pressure sensor, the micro pressure sensor embedded in rubber head real -time monitoring clamping force, through the closed loop control dynamic adjustment cylinder pressure, prevents overpressure damage fragile test tube or the slip caused by insufficient clamping.

[0022] 5. The present invention proposes a test tube opening and closing device that, through the setting of a visual sensor, can distinguish between small test tubes with a diameter of 10mm and large test tubes with a diameter of 25mm. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the 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 some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Fig. 1 This is one of the schematic diagrams of a test tube cap removal clamp device according to the present invention;

[0025] Fig. 2 This is a second schematic diagram of a test tube cap removal clamp device according to the present invention;

[0026] Fig. 3 This is a schematic diagram of the gripper of a test tube cap removal clamp according to the present invention.

[0027] In the figure, 10 is the connecting seat; 101 is the claw column; 20 is the housing; 30 is the first driving device; 40 is the rotating frame; 50 is the second driving device; 501 is the first slider; 502 is the second slider; and 60 is the mounting block. Detailed Implementation

[0028] The following is combined with Figs. 1-3 This utility model will be described in detail.

[0029] A test tube switch cap clamp, such as Figs. 1-2 As shown, it includes at least two opposing grippers, forming a clamping space between the two grippers. Each gripper includes a connecting seat 10, and the connecting seat 10 extends downward in the circumferential direction around the clamping space with at least four claw posts 101. The angle formed by two adjacent claw posts 101 connecting to the clamping space is the same.

[0030] When the cap of a small test tube is opened and closed, the claw posts 101 with a small relative distance located in the middle of the gripper hold the cap of the small test tube; when the cap of a large test tube is opened and closed, the claw posts 101 with a large relative distance located on both sides of the gripper hold the cap of the large test tube.

[0031] A two-pronged gripper was changed to a four-pronged gripper. When opening and closing the lid, the gripping angle of the gripper is evenly distributed on the four points of the lid, minimizing the deformation of the lid. The four-pronged gripper ensures that the gripping angle of the gripper is evenly distributed on the lid when holding test tubes of different sizes.

[0032] The outer circumferential surface of the claw column 101 is provided with a wavy clamping convex part matched with the anti-skid lines of the outer edge of the test tube cover. A rubber head is installed at the end of the claw column 101, and a micro pressure sensor is embedded inside. If the clamping force exceeds the safety threshold, the controller will immediately stop the cylinder action and alarm, preventing the test tube from breaking and avoiding the deformation of the cover caused by uneven force of the traditional chuck.

[0033] In the embodiment, as shown in the figure, Fig. 3 The angle formed by the connection of the adjacent two claw columns 101 to the clamping space is the same, the claw columns 101 are uniformly distributed around the clamping space, the central angle formed by the adjacent claw columns 101 is 45°, and the clamping space has a regular quadrilateral structure.

[0034] In the embodiment, the outer circumferential surface of the claw column 101 is provided with a clamping convex part matched with the test tube cover along its axial direction, and the clamping convex part is matched with the concave-convex of the outer edge of the test tube cover. The clamping convex part is designed: the surface of the wavy clamping convex part is coated with a polyurethane coating to enhance the friction with the test tube cover, which is suitable for smooth plastic or glass test tube covers.

[0035] In the embodiment, the end of the claw column 101 is provided with a rubber head, and the surface of the rubber head is covered with a plurality of silica gel convex points.

[0036] In the embodiment, the rubber head is embedded with a pressure sensor inside for real-time feedback of the clamping force. The pressure sensor data is transmitted to the controller in real time, and when a slip signal is detected, the controller triggers the fine adjustment of the clamping jaw.

[0037] A test tube cover opening and closing device, comprising the test tube cover opening and closing chuck, further comprising a housing 20, the housing 20 is provided with a first driving device 30, the output end of the first driving device 30 is drivingly connected with a rotating frame 40, the rotating frame 40 is provided with a second driving device 50, the output end of the second driving device 50 is respectively drivingly connected to two clamping jaws.

[0038] The first driving device 30 is a servo motor, which drives the rotating frame 40 to rotate through a worm and gear mechanism. The second driving device 50 is a driving cylinder controlled by an electromagnetic valve.

[0039] In the embodiment, the output end of the second driving device 50 includes a first sliding block 501 and a second sliding block 502, the moving direction of the first sliding block 501 is opposite to that of the second sliding block 502, the first sliding block 501 and the second sliding block 502 are reversely fixed on the rotating frame 40 to realize the synchronous opening and closing of the clamping jaws. Further, the first sliding block 501 and the second sliding block 502 are connected to the two clamping jaws through mounting blocks 60 respectively.

[0040] In this embodiment, a vision sensor is provided on the top of the rotating frame 40 to identify the size of the test tubes and automatically adjust the opening and closing distance of the grippers. The vision sensor includes a camera and a light source to identify the size of the test tubes. From test tube identification and clamping force adjustment to rotating and opening the cap, the entire process requires no manual intervention.

[0041] In this embodiment, a controller is integrated within the housing 20. The controller is connected to the first drive device 30, the second drive device 50, the pressure sensor, and the vision sensor. The controller, integrated within the housing 20, receives test tube size data from the vision module and clamping force signals from the pressure sensor, and controls the servo motor speed and cylinder stroke.

[0042] The present invention provides a test tube cap switching device, the method of which is as follows:

[0043] A camera captures images of the test tubes, and the controller analyzes and categorizes their diameters. The controller sends commands to a solenoid valve, which drives a cylinder to adjust the gripper spacing to the target value. After the grippers close, a pressure sensor provides real-time feedback on the force, and the controller dynamically adjusts the cylinder pressure to prevent overload. A servo motor drives a rotating frame 40° to rotate via a worm gear, generating torque to unscrew the test tube caps. After opening, the cylinder resets the grippers, and the rotating frame 40° returns to its original position, ready for the next operation.

[0044] Small test tube opening: The two grippers retract towards the center, the central gripper column 101 clamps the small test tube cap, and the locking protrusion is embedded into the groove of the test tube cap; after the pressure sensor detects the preset clamping force, the retraction stops, and the chuck is rotated to complete the opening.

[0045] Large test tube opening: The grippers expand outward, and the two side grippers 101 clamp the large test tube cap. The pressure sensor dynamically adjusts the clamping force to prevent slippage or damage.

[0046] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A test tube switch cover collet, characterized by, At least two oppositely arranged clamping jaws are provided, and a clamping space is formed between the two clamping jaws. The clamping jaw comprises a connecting seat, and at least four jaw columns extend downward around the circumferential direction of the clamping space. The angle formed by the connection of the two adjacent jaw columns to the clamping space is the same. When the small test tube is opened and closed, the jaw columns with small relative spacing located in the middle position of the clamping jaw clamp the tube cap of the small test tube. When the large test tube is opened and closed, the jaw columns with large relative spacing located on both sides of the clamping jaw clamp the tube cap of the large test tube.

2. A test tube switch cover collet as defined in claim 1 wherein, The angle formed by the connection of the two adjacent jaw columns to the clamping space is the same.

3. A test tube switch cover collet as defined in claim 2 wherein, The outer circumferential surface of the jaw column is provided with a clamping convex part matched with the test tube cap along the axial direction thereof, and the clamping convex part is matched with the outer edge concave-convex of the test tube cap.

4. A test tube switch cover collet as defined in claim 1 wherein, The end of the jaw column is provided with a rubber head, and the surface of the rubber head is covered with a plurality of silica gel convex points.

5. A test tube switch cover collet as defined in claim 4 wherein, A pressure sensor is embedded in the rubber head for real-time feedback of the clamping force.

6. A test tube switch cover apparatus comprising a test tube switch cover collet according to any one of claims 1 to 5, characterized in that, A shell is further provided, and a first driving device is arranged in the shell. The output end of the first driving device is drivingly connected with a rotating frame. A second driving device is arranged on the rotating frame, and the output end of the second driving device is respectively drivingly connected to the two clamping jaws.

7. A test tube switch cover apparatus as defined in claim 6, wherein, The output end of the second driving device comprises a first sliding block and a second sliding block, and the moving direction of the first sliding block is reversely arranged with the moving direction of the second sliding block.

8. A test tube switch cover apparatus as defined in claim 7, wherein, The first sliding block and the second sliding block are respectively connected to the two clamping jaws through mounting blocks.

9. A test tube switch cover apparatus as defined in claim 6, wherein, A visual sensor is arranged on the top of the rotating frame for identifying the size of the test tube and automatically adjusting the opening and closing spacing of the clamping jaw.

10. A test tube switch cover apparatus as defined in claim 6, wherein, A controller is integrated in the shell, and the controller is respectively signal-connected with the first driving device, the second driving device, the pressure sensor and the visual sensor.

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