Test tube clamping and positioning device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a test tube clamping and positioning device which comprises a lead screw motor, a motor seat, a guide rail seat, a driving part A, a driving part B, a clamping jaw fixing plate A, a clamping jaw fixing plate B, a clamping jaw A and a clamping jaw B. Through a simple mechanical transmission structure, accurate clamping and positioning of a test tube are achieved, and the clamping and positioning mode is bidirectional flexible clamping. Therefore, it can be ensured that the test tube clamping and positioning device is compatible with test tubes of different sizes and clamps and positions the test tubes of different sizes, the centers of the test tubes of different sizes can be kept consistent in the front, back, left and right directions, and the test tube clamping and positioning device is simple in structure, reliable, high in repeated precision and high in practicability. The test tube clamping and positioning device can be used for clamping and positioning test tubes with different sizes, so that the application range of the test tube clamping and positioning device is widened.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a test tube clamping and positioning device. Background Technology

[0002] As various body fluid analyzers in the field of in vitro diagnostics for medical devices continue to develop towards automation and intelligence, they have brought great convenience to the daily work of medical staff.

[0003] In various clinical practices, body fluids are often first placed in capped test tubes, which are then placed on a designated test tube rack. Medical staff then place the test tube rack into an instrument for automatic transfer. The instrument's sampling needle automatically punctures the test tube cap and extends into the test tube to collect and test the sample.

[0004] When test tubes are placed loosely on the test tube rack, the position of each test tube is not uniform. In order to ensure that the instrument's sampling needle can be accurately inserted into the test tube for sampling, a test tube clamping and positioning device is needed to accurately position the test tube.

[0005] However, existing test tube clamping and positioning devices cannot clamp test tubes of different sizes with sufficient flexibility. Since different hospitals use test tubes of different sizes, different hospitals need to use different test tube clamping and positioning devices to clamp and position the test tubes, which reduces the applicability of the test tube clamping and positioning devices. Utility Model Content

[0006] The purpose of this invention is to provide a test tube clamping and positioning device, which solves the technical problem that existing test tube clamping and positioning devices cannot clamp test tubes of different sizes with relative flexibility. Since different hospitals use test tubes of different sizes, different hospitals need to use different test tube clamping and positioning devices to clamp and position the test tubes, thus reducing the applicability of the test tube clamping and positioning device.

[0007] To achieve the above objectives, this utility model provides a test tube clamping and positioning device, including a lead screw motor, a motor base, a guide rail base, a driving component A, a driving component B, a gripper fixing plate A, a gripper fixing plate B, a gripper A, and a gripper B. The lead screw motor is disposed outside the motor base, and a lead screw is disposed in the middle of the lead screw motor, penetrating the motor. The guide rail base is disposed on the motor base. The driving component A is fixedly connected to the lead screw, and both the driving component A and the driving component B are connected to the guide rail base through a driving mechanism. The gripper fixing plate A and the gripper fixing plate B are respectively connected to the driving component A and the driving component B through a flexible buffer mechanism. The gripper A and the gripper B are respectively disposed on the gripper fixing plate A and the gripper fixing plate B.

[0008] The driving mechanism includes a slider and a transmission component. The slider is used to restrict the movement direction of the driving component A and the driving component B, and the transmission component is used to drive the driving component A and the driving component B to move towards or away from each other.

[0009] The sliding member includes a first guide rail, a first slider A, and a first slider B. The first guide rail is disposed on one side of the guide rail seat, and the first slider A and the first slider B are slidably disposed on the first guide rail. The driving member A and the driving member B are respectively disposed on the first slider A and the first slider B.

[0010] The transmission component includes pulley A, pulley B, and a belt. Pulley A and pulley B are respectively located near the front and rear ends of the guide rail seat. The belt is tensioned on pulley A and pulley B. The driving component A is located on the lower side of the belt, and the driving component B is located on the upper side of the belt.

[0011] The flexible buffer mechanism includes a moving part and a buffer part. The moving part is used to restrict the moving direction of the gripper fixing plate A and the gripper fixing plate B, and the buffer part is used to buffer the gripper fixing plate A and the gripper fixing plate B when they move.

[0012] The movable component includes a second guide rail, a second slider A, and a second slider B. The second guide rail is disposed on the side of the guide rail seat away from the first guide rail. The second slider A and the second slider B are slidably disposed on the second guide rail. The gripper fixing plate A and the gripper fixing plate B are respectively disposed on the second slider A and the second slider B.

[0013] The buffer component includes spring A, spring B, spring limiting plate A, and spring limiting plate B. Spring A and spring B are respectively disposed on driving component A and driving component B. Spring limiting plate A is disposed on the second slider A and is pressed into the slot of driving component A by spring A. Spring limiting plate B is disposed on the second slider B and is pressed into the slot of driving component B by spring B.

[0014] This utility model discloses a test tube clamping and positioning device. Through a simple mechanical transmission structure, it achieves precise clamping and positioning of test tubes. The clamping and positioning method is bidirectional flexible clamping, ensuring compatibility with test tubes of different sizes. It clamps and positions test tubes of varying sizes while maintaining consistency in the front-back, left-right, and right directions. The device is simple in structure, reliable, and has high repeatability, ensuring smooth and stable puncture of the test tube cap by the instrument's sampling needle for sample collection. Because this device can clamp and position test tubes of different sizes, it can be used by various hospitals, expanding its applicability. This solves the technical problem that existing test tube clamping and positioning devices cannot flexibly clamp test tubes of different sizes, and that different hospitals use different sizes of test tubes, requiring different devices and reducing the applicability of existing devices. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the overall structure of the test tube clamping and positioning device according to the first embodiment of this utility model.

[0017] Figure 2 This is a schematic diagram showing the connection between the drive component A and the belt of the test tube clamping and positioning device according to the first embodiment of this utility model.

[0018] Figure 3 This is a rear view of the test tube clamping and positioning device according to the first embodiment of this utility model.

[0019] Figure 4 This is a schematic diagram of the initial state of the test tube clamping and positioning device according to the first embodiment of this utility model.

[0020] Figure 5 This is a schematic diagram of the test tube detection status of the test tube clamping and positioning device according to the first embodiment of this utility model.

[0021] In the diagram: 1-Screw motor, 2-Motor base, 3-Guide rail base, 4-First guide rail, 5-First slider A, 6-First slider B, 7-Driver A, 8-Driver B, 9-Spring A, 10-Spring B, 11-Pulley A, 12-Pulley B, 13-Belt, 14-Second guide rail, 15-Second slider A, 16-Second slider B, 17-Gripper fixing plate A, 18-Gripper fixing plate B, 19-Gripper A, 20-Gripper B, 21-Spring limiting plate A, 22-Spring limiting plate B, 23-Motor reset sensing plate, 24-Optical coupler, 101-Screw. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] First embodiment:

[0024] Please see Figures 1 to 5 This utility model provides a test tube clamping and positioning device, including a lead screw motor 1, a motor base 2, a guide rail base 3, a driving component A7, a driving component B8, a gripper fixing plate A17, a gripper fixing plate B18, a gripper A19, a gripper B20, and an optocoupler 24. The driving component A7 and the driving component B8 are both connected to the guide rail base 3 through a driving mechanism. The gripper fixing plate A17 and the gripper fixing plate B18 are respectively connected to the driving component A7 and the driving component B8 through a flexible buffer mechanism. The driving mechanism includes a sliding component and a transmission component. The sliding component includes a first guide rail 4, a first slider A5, and a first slider B6. The transmission component includes a pulley A11, a pulley B12, and a belt 13. The flexible buffer mechanism includes a moving component and a buffer component. The moving component includes a second guide rail 14, a second slider A15, and a second slider B16. The buffer component includes a spring A9, a spring B10, a spring limiting plate A21, and a spring limiting plate B22.

[0025] In this embodiment, a simple mechanical transmission structure achieves precise clamping and positioning of the test tubes. This clamping and positioning method is a bidirectional flexible clamping, ensuring that the test tube clamping and positioning device is compatible with test tubes of different sizes. Furthermore, the center of the test tubes of different sizes remains consistent in the front-back, left-right, and right directions. The test tube clamping and positioning device has a simple, reliable structure and high repeatability, ensuring that the instrument's sampling needle can smoothly and easily pierce the test tube cap for sample collection. Because this test tube clamping and positioning device can clamp and position test tubes of different sizes, different hospitals can use it to clamp and position test tubes of various sizes, thus expanding the applicability of the test tube clamping and positioning device. This solves the technical problem that existing test tube clamping and positioning devices cannot clamp test tubes of different sizes with sufficient flexibility, and that different hospitals use different sizes of test tubes, requiring different hospitals to use different test tube clamping and positioning devices, thus reducing the applicability of the test tube clamping and positioning device.

[0026] The lead screw motor 1 is disposed outside the motor base 2, and a lead screw 101 is disposed in the middle of the lead screw motor 1, which passes through the motor. The guide rail base 3 is disposed on the motor base 2. The driving component A7 is fixedly connected to the lead screw 101, and both the driving component A7 and the driving component B8 are connected to the guide rail base 3 through a driving mechanism. The gripper fixing plate A17 and the gripper fixing plate B18 are respectively connected to the driving component A7 and the driving component B8 through a flexible buffer mechanism. The gripper A19 and the gripper B20 are respectively disposed on the gripper fixing plate A17 and the gripper fixing plate B18.

[0027] Secondly, the drive component B8 is provided with a motor reset sensing plate 23, which is used to sense whether the lead screw motor 1 has been reset.

[0028] Furthermore, the slider is used to restrict the movement direction of the drive member A7 and the drive member B8, and the transmission member is used to drive the drive member A7 and the drive member B8 to move towards or away from each other.

[0029] Meanwhile, the first guide rail 4 is disposed on one side of the guide rail seat 3, and the first slider A5 and the first slider B6 are slidably disposed on the first guide rail 4. The driving member A7 and the driving member B8 are respectively disposed on the first slider A5 and the first slider B6. The pulley A11 and the pulley B12 are respectively disposed near the front and rear ends of the guide rail seat 3. The belt 13 is tensioned on the pulley A11 and the pulley B12. The driving member A7 is disposed on the lower side of the belt 13, and the driving member B8 is disposed on the upper side of the belt 13.

[0030] In addition, the moving member is used to restrict the moving direction of the gripper fixing plate A17 and the gripper fixing plate B18, and the buffer member is used to buffer the gripper fixing plate A17 and the gripper fixing plate B18 when they move.

[0031] Furthermore, the second guide rail 14 is disposed on the side of the guide rail seat 3 away from the first guide rail 4. The second slider A15 and the second slider B16 are slidably disposed on the second guide rail 14. The gripper fixing plate A17 and the gripper fixing plate B18 are respectively disposed on the second slider A15 and the second slider B16. The spring A9 and the spring B10 are respectively disposed on the driving member A7 and the driving member B8. The spring limiting plate A21 is disposed on the second slider A15 and is pressed into the groove of the driving member A7 by the spring A9. The spring limiting plate B22 is disposed on the second slider B16 and is pressed into the groove of the driving member B8 by the spring B10.

[0032] Finally, the optocoupler 24 is mounted on the guide rail 3 and is used as a signal during the initialization of the lead screw motor 1.

[0033] When using the test tube clamping and positioning device of this embodiment, the optocoupler 24 detects whether the lead screw motor 1 is in the initialization state. When the lead screw motor 1 is in the initial position, the gripper A19 and the gripper B20 are in the open state. Then, the test tube is conveyed. When the test tube is conveyed to the middle area between the gripper A19 and the gripper B20, the lead screw motor 1 starts to run. When the lead screw motor 1 runs, the lead screw 101 will translate back and forth along the motor axis of the lead screw motor 1, thereby bringing... The drive component A7 moves accordingly. When the drive component A7 moves, the belt 13 gradually tightens. At the same time as tightening, the belt 13 runs outside the pulleys A11 and B12, thereby driving the drive component A7 and drive component B8 to move towards or away from each other. When the drive component A7 and drive component B8 move towards each other, the gripper fixing plate A17 and gripper fixing plate B18 move towards each other, thereby driving the gripper A19 and gripper B20 to move towards each other, thus achieving the clamping and positioning of the test tube.

[0034] During the relative movement of drive components A7 and B8, the grippers A19 and B20 immediately stop moving upon encountering the test tube, thus clamping the test tube and achieving precise positioning. Due to the action of springs A9 and B10, drive components A7 and B8 can continue moving a distance L. At this point, the clamping force on the test tube is the elastic force of the compressed springs, and the test tube is in a flexible clamping state, preventing it from cracking or other abnormalities. Therefore, even when the outer diameters of the test tubes are inconsistent, this device can effectively clamp and position test tubes of different sizes.

[0035] In summary, this utility model achieves precise clamping and positioning of test tubes through a simple mechanical transmission structure. This clamping and positioning method is a bidirectional flexible clamping, ensuring compatibility with test tubes of different sizes. Furthermore, the center of each test tube remains consistent in all directions (front, back, left, and right). The device is simple, reliable, and has high repeatability, ensuring smooth and stable puncture of the test tube cap by the instrument's sampling needle for sample collection. Because this device can clamp and position test tubes of different sizes, it is suitable for use by various hospitals, expanding its applicability. This solves the technical problem of existing test tube clamping devices being unable to flexibly clamp test tubes of different sizes, which necessitates different devices for different hospitals due to varying test tube sizes, thus reducing the applicability of existing devices.

[0036] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A test tube clamping and positioning device, characterized in that: The device includes a lead screw motor, a motor base, a guide rail base, a drive component A, a drive component B, a gripper fixing plate A, a gripper fixing plate B, a gripper A, and a gripper B. The lead screw motor is disposed outside the motor base, and a lead screw is disposed in the middle of the motor, penetrating through the motor. The guide rail base is disposed on the motor base. The drive component A is fixedly connected to the lead screw, and both drive component A and drive component B are connected to the guide rail base through a drive mechanism. The gripper fixing plate A and gripper fixing plate B are respectively connected to drive component A and drive component B through a flexible buffer mechanism. The gripper A and gripper B are respectively disposed on gripper fixing plate A and gripper fixing plate B.

2. The test tube clamping and positioning device as described in claim 1, characterized in that: The driving mechanism includes a slider and a transmission component. The slider is used to restrict the movement direction of the driving component A and the driving component B, and the transmission component is used to drive the driving component A and the driving component B to move towards or away from each other.

3. The test tube clamping and positioning device as described in claim 2, characterized in that: The sliding member includes a first guide rail, a first slider A and a first slider B. The first guide rail is disposed on one side of the guide rail seat, and the first slider A and the first slider B are slidably disposed on the first guide rail. The driving member A and the driving member B are respectively disposed on the first slider A and the first slider B.

4. The test tube clamping and positioning device as described in claim 3, characterized in that: The transmission component includes pulley A, pulley B, and a belt. Pulley A and pulley B are respectively located near the front and rear ends of the guide rail seat. The belt is tensioned on pulley A and pulley B. The driving component A is located on the lower side of the belt, and the driving component B is located on the upper side of the belt.

5. The test tube clamping and positioning device as described in claim 3, characterized in that: The flexible buffer mechanism includes a moving part and a buffer part. The moving part is used to restrict the movement direction of the gripper fixing plate A and the gripper fixing plate B. The buffer part is used to buffer the gripper fixing plate A and the gripper fixing plate B when they move.

6. The test tube clamping and positioning device as described in claim 5, characterized in that: The moving component includes a second guide rail, a second slider A, and a second slider B. The second guide rail is disposed on the side of the guide rail seat away from the first guide rail. The second slider A and the second slider B are slidably disposed on the second guide rail. The gripper fixing plate A and the gripper fixing plate B are respectively disposed on the second slider A and the second slider B.

7. The test tube clamping and positioning device as described in claim 6, characterized in that: The buffer includes spring A, spring B, spring limiting plate A, and spring limiting plate B. Spring A and spring B are respectively disposed on driving member A and driving member B. Spring limiting plate A is disposed on the second slider A and is pressed into the slot of driving member A by spring A. Spring limiting plate B is disposed on the second slider B and is pressed into the slot of driving member B by spring B.

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