Test tube clamping and positioning device

Abstract

The invention 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 base, a guide rail base, 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, the clamping and positioning mode is bidirectional flexible clamping, and the clamping and positioning efficiency is improved. 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] The invention relates to the technical field of medical devices, and in particular to a test tube clamping and positioning device. Background Art

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

[0003] In various clinical practices, body fluids are often first placed in test tubes with lids, and then the test tubes are placed on designated test tube racks. Medical staff then put the test tube racks onto the instrument for automatic transmission. The instrument sampling needle automatically punctures the test tube cap and then extends into the test tube for sample collection and testing.

[0004] When the 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 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, the existing test tube clamping and positioning device cannot flexibly clamp test tubes of different sizes. The test tubes used in different hospitals are of different sizes, so different hospitals need to use different test tube clamping and positioning devices to clamp and position the test tubes, which reduces the application range of the test tube clamping and positioning device. Summary of the invention

[0006] The purpose of the present invention is to provide a test tube clamping and positioning device, which solves the technical problem that the existing test tube clamping and positioning device cannot flexibly clamp test tubes of different sizes, and the test tubes used in different hospitals are of different sizes, so different hospitals need to use different test tube clamping and positioning devices to clamp and position the test tubes, which reduces the application scope of the test tube clamping and positioning device.

[0007] To achieve the above-mentioned purpose, the present invention provides a test tube clamping and positioning device, including a screw motor, a motor seat, a guide rail seat, a driving member A, a driving member B, a clamping jaw fixing plate A, a clamping jaw fixing plate B, a clamping jaw A and a clamping jaw B, the screw motor is arranged outside the motor seat, a screw rod penetrating the motor is arranged in the middle of the screw motor, the guide rail seat is arranged on the motor seat, the driving member A is fixedly connected to the screw rod, and the driving member A and the driving member B are both connected to the guide rail seat through a driving mechanism, the clamping jaw fixing plate A and the clamping jaw fixing plate B are respectively connected to the driving member A and the driving member B through a flexible buffer mechanism, and the clamping jaw A and the clamping jaw B are respectively arranged on the clamping jaw fixing plate A and the clamping jaw fixing plate B.

[0008] Wherein, the driving mechanism includes a sliding member and a transmission member, the sliding member is used to limit the moving directions of the driving member A and the driving member B, and the transmission member is used to drive the driving member A and the driving member B to move towards or away from each other.

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

[0010] Wherein, the transmission member includes a pulley A, a pulley B and a belt, the pulley A and the pulley B are respectively arranged near the front and rear ends of the guide rail seat, the belt tensioning is arranged on the pulley A and the pulley B, the driving member A is arranged on the lower side of the belt, and the driving member B is arranged on the upper side of the belt.

[0011] Among them, the flexible buffer mechanism includes a moving part and a buffer part, the moving part is used to limit the moving direction of the clamp fixing plate A and the clamp fixing plate B, and the buffer part is used to buffer the clamp fixing plate A and the clamp fixing plate B when the clamp fixing plate A and the clamp fixing plate B move.

[0012] Wherein, the moving part includes a second guide rail, a second slider A and a second slider B, the second guide rail is arranged 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 arranged on the second guide rail, and the clamp fixing plate A and the clamp fixing plate B are respectively arranged on the second slider A and the second slider B.

[0013] Wherein, the buffer member includes a spring A, a spring B, a spring limit plate A and a spring limit plate B, the spring A and the spring B are respectively arranged on the driving member A and the driving member B, the spring limit plate A is arranged on the second slider A and is pressed by the spring A in the notch of the driving member A, and the spring limit plate B is arranged on the second slider B and is pressed by the spring B in the notch of the driving member B.

[0014] The test tube clamping and positioning device of the present invention realizes accurate clamping and positioning of the test tube through a simple mechanical transmission structure. The clamping and positioning mode is a two-way flexible clamping, thereby ensuring that the test tube clamping and positioning device is compatible with test tubes of different sizes and clamps and positions test tubes of different sizes, and the centers of test tubes of different sizes can be kept consistent in the front, back, left and right directions. The test tube clamping and positioning device has a simple structure, is reliable and has high repeatability, thereby ensuring that the instrument sampling needle can stably and smoothly puncture the test tube cover to collect samples. Since the test tube clamping and positioning device can clamp and position test tubes of different sizes, different hospitals can use the test tube clamping and positioning device to clamp and position test tubes of different sizes, thereby improving the application scope of the test tube clamping and positioning device, and solving the problem that the existing test tube clamping and positioning device cannot clamp test tubes of different sizes flexibly, and the test tubes used in different hospitals are of different sizes, so that different hospitals need to use different test tube clamping and positioning devices to clamp and position the test tubes, thereby reducing the technical problem of the application scope of the test tube clamping and positioning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0016] Figure 1 It is a schematic diagram of the overall structure of the test tube clamping and positioning device according to the first embodiment of the present invention.

[0017] Figure 2 Schematic diagram of the connection between the driving member A and the belt of the test tube clamping and positioning device of the first embodiment of the present invention.

[0018] Figure 3 It is a rear view of the test tube clamping and positioning device according to the first embodiment of the present invention.

[0019] Figure 4 1 is a schematic diagram of the initial state of the test tube clamping and positioning device according to the first embodiment of the present invention.

[0020] Figure 5 1 is a schematic diagram of a test tube detection state of the test tube clamping and positioning device according to the first embodiment of the present invention.

[0021] In the figure: 1-screw motor, 2-motor seat, 3-guide rail seat, 4-first guide rail, 5-first slider A, 6-first slider B, 7-driving member A, 8-driving member 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-clamping jaw fixing plate A, 18-clamping jaw fixing plate B, 19-clamping jaw A, 20-clamping jaw B, 21-spring limiting plate A, 22-spring limiting plate B, 23-motor reset induction plate, 24-optical coupler, 101-screw. DETAILED DESCRIPTION

[0022] 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 are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0023] First embodiment:

[0024] See also Figures 1 to 5 The present invention provides a test tube clamping and positioning device, comprising a screw motor 1, a motor seat 2, a guide rail seat 3, a driving member A7, a driving member B8, a clamping jaw fixing plate A17, a clamping jaw fixing plate B18, a clamping jaw A19, a clamping jaw B20 and an optical coupler 24, wherein the driving member A7 and the driving member B8 are both connected to the guide rail seat 3 through a driving mechanism, the clamping jaw fixing plate A17 and the clamping jaw fixing plate B18 are respectively connected to the driving member A7 and the driving member B8 through a flexible buffer mechanism, the driving mechanism comprises a sliding member and a transmission member, the sliding member comprises a first guide rail 4, a first slider A5 and a first slider B6, the transmission member comprises a pulley A11, a pulley B12 and a belt 13, the flexible buffer mechanism comprises a moving member and a buffer member, the moving member comprises a second guide rail 14, a second slider A15 and a second slider B16, and the buffer member comprises 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 is used to achieve precise clamping and positioning of the test tube. The clamping and positioning method is a two-way flexible clamping method, thereby ensuring that the test tube clamping and positioning device is compatible with test tubes of different sizes and can clamp and position test tubes of different sizes. Moreover, the centers of test tubes of different sizes can remain consistent in the front, back, left and right directions. The test tube clamping and positioning device has a simple and reliable structure and high repeatability, thereby ensuring that the instrument sampling needle can smoothly and smoothly puncture the test tube cover to collect samples. Since the test tube clamping and positioning device can clamp and position test tubes of different sizes, different hospitals can use the test tube clamping and positioning device to clamp and position test tubes of different sizes, thereby improving the scope of application of the test tube clamping and positioning device, and solving the problem that the existing test tube clamping and positioning device cannot flexibly clamp test tubes of different sizes, and the test tubes used in different hospitals are of different sizes, so different hospitals need to use different test tube clamping and positioning devices to clamp and position the test tubes, thereby reducing the technical problem of the scope of application of the test tube clamping and positioning device.

[0026] Among them, the screw motor 1 is arranged outside the motor seat 2, and a screw 101 is arranged in the middle of the screw motor 1 and passes through the motor. The guide rail seat 3 is arranged on the motor seat 2, and the driving member A7 is fixedly connected to the screw 101, and the driving member A7 and the driving member B8 are connected to the guide rail seat 3 through a driving mechanism, the clamp fixing plate A17 and the clamp fixing plate B18 are respectively connected to the driving member A7 and the driving member B8 through a flexible buffer mechanism, and the clamp A19 and the clamp B20 are respectively arranged on the clamp fixing plate A17 and the clamp fixing plate B18.

[0027] Secondly, a motor reset sensing plate 23 is provided on the driving member B8, and the motor reset sensing plate 23 is used to sense whether the lead screw motor 1 is reset.

[0028] Again, the sliding member is used to limit the moving directions of the driving member A7 and the driving member B8, and the transmission member is used to drive the driving member A7 and the driving member B8 to move toward or away from each other.

[0029] At the same time, the first guide rail 4 is arranged on one side of the guide rail seat 3, the first slider A5 and the first slider B6 are slidably arranged on the first guide rail 4, the driving member A7 and the driving member B8 are respectively arranged on the first slider A5 and the first slider B6, the pulley A11 and the pulley B12 are respectively arranged 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 arranged on the lower side of the belt 13, and the driving member B8 is arranged on the upper side of the belt 13.

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

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

[0032] Finally, the optical coupler 24 is disposed on the guide rail seat 3 and is used as a signal when the lead screw motor 1 is initialized.

[0033] When a test tube clamping and positioning device of the present embodiment is used, the optical coupler 24 is used to detect whether the screw motor 1 is in the initialization state. When the screw motor 1 is in the initial position, the clamping jaws A19 and B20 are in the open state. After that, the test tube is transferred. When the test tube is transferred to the middle area between the clamping jaws A19 and B20, the screw motor 1 starts to run. When the screw motor 1 is running, the screw 101 will translate forward and backward along the motor axis of the screw motor 1, thereby bringing The driving member A7 moves accordingly. When the driving member A7 moves, the belt 13 will gradually tighten, and while tightening, it will drive the belt 13 to run outside the pulley A11 and the pulley B12, thereby driving the driving member A7 and the driving member B8 to move toward or away from each other, allowing the driving member A7 and the driving member B8 to move toward each other, driving the clamping jaw fixing plate A17 and the clamping jaw fixing plate B18 to move toward each other, thereby driving the clamping jaw A19 and the clamping jaw B20 to move toward each other, thereby achieving the clamping positioning of the test tube.

[0034] During the process of the driving member A7 and the driving member B8 moving toward each other, the clamping jaws A19 and the clamping jaws B20 stop moving immediately after encountering the test tube. At this time, the test tube is clamped to achieve precise positioning of the test tube. Due to the action of the spring A9 and the spring B10, the driving member A7 and the driving member B8 can continue to move for a distance L. At this time, the clamping force of the test tube is the elastic force of the compressed spring, and the test tube is in a flexibly clamped state and will not be cracked or other abnormalities. For this reason, when the outer diameters of the test tubes are inconsistent, the device can also fully clamp and position test tubes of different sizes.

[0035] In summary, the present invention realizes accurate clamping and positioning of test tubes through a simple mechanical transmission structure. The clamping and positioning method is a two-way flexible clamping, thereby ensuring that the test tube clamping and positioning device is compatible with test tubes of different sizes and can clamp and position test tubes of different sizes, and the centers of test tubes of different sizes can be kept consistent in the front, back, left and right directions. The test tube clamping and positioning device has a simple structure, is reliable and has high repeatability, thereby ensuring that the instrument sampling needle can smoothly and smoothly puncture the test tube cover to collect samples. Since the test tube clamping and positioning device can clamp and position test tubes of different sizes, different hospitals can use the test tube clamping and positioning device to clamp and position test tubes of different sizes, thereby improving the scope of application of the test tube clamping and positioning device, and solving the problem that the existing test tube clamping and positioning device cannot clamp test tubes of different sizes flexibly, and the test tubes used in different hospitals are of different sizes, so different hospitals need to use different test tube clamping and positioning devices to clamp and position the test tubes, thereby reducing the technical problem of the scope of application of the test tube clamping and positioning device.

[0036] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A test tube clamping and positioning device, characterized in that: It includes a screw motor, a motor seat, a guide rail seat, a driving member A, a driving member B, a clamp fixing plate A, a clamp fixing plate B, a clamp A and a clamp B, the screw motor is arranged outside the motor seat, a screw rod that runs through the motor is arranged in the middle of the screw motor, the guide rail seat is arranged on the motor seat, the driving member A is fixedly connected to the screw rod, and the driving member A and the driving member B are connected to the guide rail seat through a driving mechanism, the clamp fixing plate A and the clamp fixing plate B are respectively connected to the driving member A and the driving member B through a flexible buffer mechanism, and the clamp A and the clamp B are respectively arranged on the clamp fixing plate A and the clamp fixing plate B.

2. The test tube clamping and positioning device according to claim 1, characterized in that: The driving mechanism includes a sliding member and a transmission member. The sliding member is used to limit the moving directions of the driving member A and the driving member B, and the transmission member is used to drive the driving member A and the driving member B to move toward or away from each other.

3. The test tube clamping and positioning device according to 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 arranged on one side of the guide rail seat. The first slider A and the first slider B are slidably arranged on the first guide rail. The driving member A and the driving member B are respectively arranged on the first slider A and the first slider B.

4. The test tube clamping and positioning device according to claim 3, characterized in that: The transmission member includes a pulley A, a pulley B and a belt. The pulley A and the pulley B are respectively arranged near the front and rear ends of the guide rail seat. The belt tensioning member is arranged on the pulley A and the pulley B. The driving member A is arranged on the lower side of the belt, and the driving member B is arranged on the upper side of the belt.

5. The test tube clamping and positioning device according to claim 3, characterized in that: The flexible buffer mechanism includes a moving part and a buffer part. The moving part is used to limit the moving direction of the clamp fixing plate A and the clamp fixing plate B. The buffer part is used to buffer the clamp fixing plate A and the clamp fixing plate B when the clamp fixing plate A and the clamp fixing plate B move.

6. The test tube clamping and positioning device according to claim 5, characterized in that: The moving part includes a second guide rail, a second slider A and a second slider B. The second guide rail is arranged on a side of the guide rail seat away from the first guide rail. The second slider A and the second slider B are slidably arranged on the second guide rail. The clamp fixing plate A and the clamp fixing plate B are respectively arranged on the second slider A and the second slider B.

7. The test tube clamping and positioning device according to claim 6, characterized in that: The buffer member includes a spring A, a spring B, a spring limit plate A and a spring limit plate B. The spring A and the spring B are respectively arranged on the driving member A and the driving member B. The spring limit plate A is arranged on the second slider A and is pressed into the groove of the driving member A by the spring A. The spring limit plate B is arranged on the second slider B and is pressed into the groove of the driving member B by the spring B.

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