Sample rack transfer device

Abstract

The utility model discloses a sample frame transfer device which is arranged between a buffering position and a sample feeding position and comprises a rack, a translation driving mechanism is arranged on the rack, a sample frame bearing groove is formed in the side face of the rack, and a pushing hand hooking assembly is arranged at the top of the rack; the pushing hand hooking hand assembly comprises a sample frame pushing plate connected with the translation driving mechanism, a fixed blocking arm is arranged at one end of the sample frame pushing plate, a rotating hooking arm is arranged at the other end of the sample frame pushing plate, and the distance between the fixed blocking arm and the rotating hooking arm is matched with the length of a sample frame; a pressing plate clamped at the top of the sample frame is arranged in the middle of the sample frame push plate; an in-place sensor for detecting whether the sample frame reaches a sample injection position is arranged on the sample frame bearing groove; and an original point sensor for detecting the state of the rotary hook arm is arranged on the sample frame push plate. The full-automatic analyzer is ingenious in structure, low in cost and convenient to use, and long-period stable operation of the full-automatic analyzer is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of clinical testing equipment technology, and in particular to a sample rack transfer device. Background Technology

[0002] Fully automated analyzers are playing an increasingly important role in clinical testing. The sample rack, located in the sample buffer area, is transported by a sample transfer mechanism that pushes the rack to the sample application position for sample addition or to the testing position for analysis. Existing sample transfer mechanisms suffer from drawbacks such as slow transfer speed, unstable support, and inaccurate positioning, severely impacting the testing speed and accuracy of fully automated analyzers. Summary of the Invention

[0003] To solve the above problems, this utility model provides a sample rack transfer device, which can be specifically implemented using the following technical solution:

[0004] The sample rack transfer device of this utility model is located between a buffer position and a sample loading position, including a frame. A translation drive mechanism is provided on the frame. A sample rack support groove is provided on the side of the frame, and a pusher / hook assembly is provided on the top of the frame. The pusher / hook assembly includes a sample rack push plate connected to the translation drive mechanism. One end of the sample rack push plate is provided with a fixed stop arm, and the other end is provided with a rotating hook arm. The distance between the fixed stop arm and the rotating hook arm is adapted to the length of the sample rack, and a pressure plate that engages with the top of the sample rack is provided in the middle of the sample rack push plate. A positioning sensor for detecting whether the sample rack has reached the sample loading position is provided on the sample rack support groove, and an origin sensor for detecting the state of the rotating hook arm is provided on the sample rack push plate.

[0005] The sample rack support slots and translation drive mechanism are arranged in parallel.

[0006] The translation drive mechanism includes a synchronous belt mechanism and a linear guide rail that are parallel to each other and are mounted on the frame. The sample rack push plate is fixedly connected to the synchronous belt mechanism and slidably connected to the linear guide rail.

[0007] The sample rack support groove has a U-shaped structure, including a base plate and two side plates, and the spacing between the side plates is adapted to the width of the sample rack.

[0008] The fixed stop arm extends into the sample rack support groove and is engaged at one end of the sample rack; the rotating hook arm is driven by a rotary motor mounted on a bracket, the bracket being mounted at one end of the sample rack push plate, and the rotating hook arm has a vertical clearance position that deviates from the sample rack support groove and a horizontal blocking position that is engaged at the other end of the sample rack.

[0009] The pressure plate has a Z-shaped structure, with its bottom set on the sample rack push plate and its top snapped onto the top side of the sample rack. The top two ends of the pressure plate are provided with an upward-curving flared structure.

[0010] The sample rack transfer device provided by this utility model receives the sample rack from the buffer position through the sample rack support groove, enabling rapid, safe, and stable switching. Through the cooperation of the pressure plate, fixed stop arm, rotating hook arm, and sample rack support groove, the sample rack is firmly positioned, effectively preventing bumps and tipping during transportation and avoiding sample loading accidents caused by the sample rack detaching from the support groove along with the sample tube. A translation drive mechanism transfers the sample rack between the buffer position and the sample loading position, while sensors provide positioning accuracy, significantly reducing transport accidents and sample needle damage caused by inaccurate displacement. This utility model features a clever structure, low cost, and ease of use, ensuring long-term stable operation of the fully automatic analyzer. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 yes Figure 1 A schematic diagram of the exploded structure of the rotating hook arm section. Detailed Implementation

[0013] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0014] The sample rack transfer device of this utility model is set between the buffer position and the sample injection position. It is used to transfer the sample rack from the buffer position to the sample injection position. After the sample injection is completed, the sample rack is returned to the buffer position for subsequent testing.

[0015] like Figure 1 , 2As shown, the sample rack transfer device includes a frame 1, on which a translation drive mechanism is mounted. This translation drive mechanism includes a synchronous belt mechanism 2 located on the side of the frame 1 and a linear guide rail 3 located on the top of the frame 1, the synchronous belt mechanism 2 and the linear guide rail 3 being parallel to each other. A sample rack support groove 4 is provided on the other side of the frame 1. This sample rack support groove 4 has a U-shaped structure, including a base plate and two side plates, the spacing of which is adapted to the width of a single sample rack M. The sample rack support groove 4 is arranged parallel to the translation drive mechanism, that is, the sample rack support groove 4 is parallel to the synchronous belt mechanism 2 and the linear guide rail 3. A pusher / hook assembly is provided on the top of the frame. During transfer, the sample rack M is placed in the sample rack support groove 4 and smoothly translated under the action of the pusher / hook assembly.

[0016] The aforementioned pusher / hook assembly includes a sample rack pusher plate 5 located at the top of the frame 1, which is fixedly connected to the synchronous belt mechanism 2 via a connecting block and slidably connected to the linear guide rail 3 via a slider. A fixed stop arm 51 is provided at one end of the sample rack pusher plate 5 near the sample inlet, extending towards the sample rack support groove 4 and engaging with the end of the sample rack M. A rotating hook arm 53 driven by a rotary motor 52 is provided at one end of the sample rack pusher plate 5 near the buffer position. Specifically, the rotary motor 52 is mounted on a bracket 54, and its output shaft passes through the bracket 54 and is connected to a support block 55. A bearing 56 is provided between the support block 55 and the output shaft. The output shaft is horizontally positioned along the conveying direction of the sample rack M, and its end is connected to the rotating hook arm 53. Under the action of the rotary motor 52, the position of the rotating hook arm 53 changes, having a vertical clearance position offset from the sample rack support groove 4 and a horizontal blocking position engaged with the sample rack M near the buffer position. The distance between the aforementioned fixed stop arm 51 and the rotating hook arm 53 is adapted to the length of a single sample holder M, thereby firmly fixing the sample holder M. Furthermore, a pressure plate 6 is provided in the middle of the sample holder push plate 5, which engages with the top of the sample holder M. This pressure plate 6 has a Z-shaped structure; its bottom is fixedly connected to the sample holder push plate 5, and its top engages with the side of the sample holder M. This prevents the sample holder M from shifting vertically, avoiding the sample holder M from detaching from the sample holder support groove 4 along with the sample tube during sample addition. To facilitate the smooth entry of the sample holder M into the sample holder support groove 4, upward-curving flared structures are provided at both ends of the pressure plate 6.

[0017] In addition, a positioning sensor 7 is installed on the sample holder support groove 4 to detect whether the sample holder M has reached the injection position, and an origin sensor 8 is installed on the bracket 54 to detect the state of the rotating hook arm 53.

[0018] During operation, the sample rack pusher 5 is first moved to the buffer position, and the rotating hook arm 53 is positioned in a vertical clearance position to allow the sample rack M to enter the sample rack support groove 4. Once the sample rack M enters the sample rack support groove 4 and engages with the fixed stop arm 51, the rotating hook arm 53 swings to a horizontal blocking position. Together with the fixed stop arm 51 and the pressure plate 6, it fixes the relative position of the sample rack M to the frame 1. The origin sensor 8 sends the status signal of the rotating hook arm 53 to the control unit. The control unit drives the translation drive mechanism to move the sample rack M towards the sample loading position. When the position sensor 7 detects that the sample rack M has reached the loading position, the translation drive mechanism stops, and the sample loading mechanism removes the sample tubes from the sample rack M one by one for sample loading. Afterwards, the translation drive mechanism moves the sample rack pusher 5 back to the buffer position, and the above steps are repeated until all sample loading is completed.

[0019] It should be noted that in the description of this utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A sample rack transfer device, disposed between a buffer position and a sample injection position, characterized in that: The device includes a frame, on which a translation drive mechanism is mounted. A sample rack support groove is provided on the side of the frame, and a pusher / hook assembly is provided on the top of the frame. The pusher / hook assembly includes a sample rack push plate connected to the translation drive mechanism. One end of the sample rack push plate has a fixed stop arm, and the other end has a rotating hook arm. The distance between the fixed stop arm and the rotating hook arm is adapted to the length of the sample rack. A pressure plate that engages with the top of the sample rack is provided in the middle of the sample rack push plate. A position sensor is provided on the sample rack support groove to detect whether the sample rack has reached the sample loading position, and an origin sensor is provided on the sample rack push plate to detect the state of the rotating hook arm.

2. The sample rack transfer device according to claim 1, characterized in that: The sample rack support slots and translation drive mechanism are arranged in parallel.

3. The sample rack transfer device according to claim 1, characterized in that: The translation drive mechanism includes a synchronous belt mechanism and a linear guide rail that are parallel to each other and are mounted on the frame. The sample rack push plate is fixedly connected to the synchronous belt mechanism and slidably connected to the linear guide rail.

4. The sample rack transfer device according to claim 1, characterized in that: The sample rack support groove has a U-shaped structure, including a base plate and two side plates, and the spacing between the side plates is adapted to the width of the sample rack.

5. The sample rack transfer device according to claim 1, characterized in that: The fixed stop arm extends into the sample rack support groove and is engaged at one end of the sample rack; the rotating hook arm is driven by a rotary motor mounted on a bracket, the bracket being mounted at one end of the sample rack push plate, and the rotating hook arm has a vertical clearance position that deviates from the sample rack support groove and a horizontal blocking position that is engaged at the other end of the sample rack.

6. The sample rack transfer device according to claim 1, characterized in that: The pressure plate has a Z-shaped structure, with its bottom set on the sample rack push plate and its top snapped onto the top side of the sample rack. The top two ends of the pressure plate are provided with an upward-curving flared structure.

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