A fully automatic sample detection device sampling assembly

Abstract

This utility model relates to the field of sample testing technology and discloses a sampling component for a fully automatic sample testing device. The component includes a frame with a sliding groove at the top. A three-dimensional motion component is mounted on the top of the frame, and a locking component is fixedly connected to the three-dimensional motion component. An overload protection component is also fixedly connected to the three-dimensional motion component. The overload protection component includes a small motor, with a sampling disc fixedly connected to the bottom of the small motor. A rotating rod is rotatably connected to the drive end of the small motor, and a rod sleeve is fixedly connected to the bottom of the rotating rod. In this utility model, the overload protection component provides multiple layers of protection for sampling operations. The spring structure buffers the impact force when the sampling needle encounters excessive resistance, preventing damage to components caused by rigid collisions. The rack-and-toothed protective plate stably transmits power during normal operation, and in case of overload, the force transmission is cut off through slippage via the meshing structure, preventing damage from spreading to the drive system.

Description

Technical Field

[0001] This utility model relates to the field of sample testing technology, and in particular to a sampling component for a fully automatic sample testing device. Background Technology

[0002] The sampling component of a fully automated sample testing device is a mechanical structure that enables automatic sample collection and transfer. It typically includes a sampling needle, a drive mechanism, and a positioning module. It can accurately collect and solidify liquids according to a program, working in conjunction with the testing device to complete the automated process from sampling to delivery for testing. It is widely used in sample testing in fields such as pharmaceuticals and food, improving efficiency and accuracy.

[0003] The sampling components of a fully automated sample testing device typically include a sampling actuator, a drive mechanism, a positioning module, a cleaning unit, and a control interface. The actuator is responsible for sampling, the drive and positioning ensure precise operation, the cleaning prevents cross-contamination, and the control interface connects to the host computer to achieve automated sampling.

[0004] Currently, most traditional equipment lacks overload protection components. During sampling, if resistance is encountered (such as collisions with containers or viscous samples), the impact force acts directly on the sampling needle and connected components, easily causing bending or breakage. The lack of a force transmission and cut-off mechanism allows overload to spread to the drive system, damaging core components such as motors and lead screws, increasing maintenance costs, and causing sampling interruptions due to component damage, affecting detection efficiency and accuracy. Traditional equipment often lacks locking components, requiring screws and other fasteners for connecting sampling-related components, which is time-consuming and labor-intensive, hindering rapid replacement and maintenance. Poor connection stability makes them prone to loosening due to vibration, leading to sampling positioning deviations. The lack of an elastic reset structure means repeated disassembly and assembly easily causes component wear, increasing equipment failure rates and affecting detection efficiency and stability. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sampling component for a fully automatic sample testing device, which aims to improve the problems in the prior art where traditional equipment does not use overload protection components, the impact force acts directly on the sampling needle and connected parts, which can easily cause them to bend and break, and most traditional equipment does not have locking components, so the connection of sampling-related parts needs to rely on screws and other fixation, which is time-consuming and laborious to disassemble and assemble, and is not conducive to quick replacement and maintenance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A sampling component for a fully automatic sample detection device includes a frame with a groove at the top. A three-dimensional motion component is mounted on the top of the frame, and a locking component is fixedly connected to the three-dimensional motion component. An overload protection component is also fixedly connected to the three-dimensional motion component. The overload protection component includes a small motor, a sampling disk fixedly connected to the bottom of the small motor, a rotating rod rotatably connected to the drive end of the small motor, a rod sleeve fixedly connected to the bottom of the rotating rod, a spring fixedly connected inside the rod sleeve, and two overload protection plates fixedly connected to the bottom of the spring. One side of each overload protection plate has a rack, and the rack-equipped sides of the two overload protection plates mesh with each other. The outer wall of the rod sleeve is fixedly connected to the inside of the overload protection plates, and a sampling rod is fixedly connected to the bottom of the overload protection plates. A sampling needle is fixedly connected to the bottom of the sampling rod, and the sampling rod is slidably connected inside the rod sleeve.

[0008] As a further description of the above technical solution:

[0009] The locking assembly includes a fixing rod, four locking ball grooves are provided on both sides of the bottom of the fixing rod, a locking sleeve is slidably connected to the outer wall of the fixing rod, and locking balls are provided on both sides of the locking ball grooves. The locking balls are slidably connected inside the fixing rod and the locking sleeve.

[0010] As a further description of the above technical solution:

[0011] A spring box is slidably connected to the top of the fixed rod, and a second spring is fixedly connected inside the spring box;

[0012] As a further description of the above technical solution:

[0013] A crossbar is provided inside the spring box. One side of the crossbar is fixedly connected to the second spring, and the other side of the crossbar is fixedly connected to the outer wall of the fixed rod.

[0014] As a further description of the above technical solution:

[0015] The three-dimensional motion component includes a motor, the drive end of which is rotatably connected to a threaded rod. The motor is fixedly connected to the top of the frame. A Y-axis motion frame is provided on the top of the frame. The threaded rod is threadedly connected to the inside of the Y-axis motion frame. The Y-axis motion frame is slidably connected to the inside of the slide groove.

[0016] As a further description of the above technical solution:

[0017] A second motor is fixedly connected to one side of the Y-axis motion frame. A second threaded rod is rotatably connected to the drive end of the second motor. The second threaded rod is threadedly connected to the inside of the Y-axis motion frame. An X-axis motion frame is fixedly connected to the second threaded rod.

[0018] As a further description of the above technical solution:

[0019] A motor three is fixedly connected to one side of the X-axis motion frame, and a threaded rod three is threadedly connected inside the motor three. The bottom of the threaded rod three is fixedly connected to the Z-axis motion frame.

[0020] As a further description of the above technical solution:

[0021] A sampling plate is connected to the outer wall of the Z-axis motion frame via a locking mechanism, and a pressure sensor is fixedly connected to one side of the sampling plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the overload protection component, through the meshing structure of spring buffer and overload protection plate, can effectively disperse impact force during sampling, avoiding damage to components due to excessive resistance. When an overload occurs, the rack structure of the protection plate will automatically slip, cutting off the power transmission path and preventing hard collisions. Combined with a pressure sensor to monitor pressure changes in real time, the sampling force can be precisely controlled, significantly improving equipment lifespan and sampling stability.

[0024] 2. In this utility model, the locking assembly achieves quick and stable connection and separation of components through the cooperation of the locking ball and the locking ball groove, facilitating the installation, replacement, and maintenance of related components. The spring provides elastic force to assist the locking sleeve in resetting, ensuring smooth and reliable locking action, reducing operation time, and improving equipment assembly efficiency and practicality. Attached Figure Description

[0025] Figure 1 This is a main body diagram of a sampling component for a fully automatic sample detection device proposed in this utility model;

[0026] Figure 2 This is a cross-sectional structural diagram of a sampling component for a fully automated sample detection device proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the Z-axis motion frame of the sampling component for a fully automatic sample detection device proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the overload protection component of the sampling assembly for a fully automatic sample detection device proposed in this utility model.

[0029] Figure 5 This is a schematic diagram of the locking assembly of the sampling component for a fully automatic sample testing device proposed in this utility model.

[0030] Legend:

[0031] 1. Frame; 2. Slide rail; 3. Three-dimensional motion component; 4. Locking assembly; 5. Overload protection component; 6. Small motor; 7. Sampling plate; 8. Rotating rod; 9. Rod sleeve; 10. Spring 1; 11. Overload protection plate; 12. Rack; 13. Sampling rod; 14. Sampling needle; 15. Fixing rod; 16. Locking ball groove; 17. Locking sleeve; 18. Locking ball; 19. Spring box; 20. Spring 2; 21. Crossbar; 22. Motor 1; 23. Threaded rod 1; 24. Y-axis motion frame; 25. Motor 2; 26. Threaded rod 2; 27. X-axis motion frame; 28. Motor 3; 29. ​​Threaded rod 3; 30. Z-axis motion frame; 31. Pressure sensor. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a sampling component for a fully automatic sample detection device, comprising a frame 1, a sliding groove 2 at the top of the frame 1, a three-dimensional motion component 3 at the top of the frame 1, a locking component 4 fixedly connected to the three-dimensional motion component 3, and an overload protection component 5 fixedly connected to the three-dimensional motion component 3. When the sampling needle 14 encounters an overload during operation, the spring 10 of the overload protection component 5 can buffer the pressure, and the meshing structure between the overload protection plate 11 and the rack 12 will slide or disengage relative to each other during overload, thus providing overload protection and preventing damage to components such as the sampling needle 14 and sampling rod 13 due to excessive force. A small motor 6 can drive the rotating rod 8, etc., to realize the sampling needle 14. For actions such as rotation, the overload protection component 5 includes a small motor 6, a sampling disk 7 fixedly connected to the bottom of the small motor 6, a rotating rod 8 rotatably connected to the drive end of the small motor 6, a rod sleeve 9 fixedly connected to the bottom of the rotating rod 8, a spring 10 fixedly connected inside the rod sleeve 9, two overload protection plates 11 fixedly connected to the bottom of the spring 10, one side of the overload protection plate 11 has a rack 12, the sides of the two overload protection plates 11 with racks 12 mesh with each other, the outer wall of the rod sleeve 9 is fixedly connected to the inside of the overload protection plate 11, a sampling rod 13 is fixedly connected to the bottom of the overload protection plate 11, a sampling needle 14 is fixedly connected to the bottom of the sampling rod 13, and the sampling rod 13 is slidably connected inside the rod sleeve 9.

[0034] The three-dimensional motion component 3 includes a motor 22. The three-dimensional motion component 3 drives threaded rods 23, 26, and 29 respectively via motors 22, 25, and 28, thereby moving the Y-axis motion frame 24, X-axis motion frame 27, and Z-axis motion frame 30. This achieves precise displacement of the sampling component in the X, Y, and Z spatial axes, allowing it to reach the designated sampling and placement positions. The drive end of motor 22 is rotatably connected to threaded rod 23. Motor 22 is fixedly connected to the top of frame 1. A Y-axis motion frame 24 is located on the top of frame 1, and threaded rod 23 is threadedly connected to the Y-axis motion frame 24. Inside 4, the Y-axis motion frame 24 is slidably connected to the inside of the slide groove 2. A motor 25 is fixedly connected to one side of the Y-axis motion frame 24. A threaded rod 26 is rotatably connected to the drive end of the motor 25. The threaded rod 26 is threadedly connected to the inside of the Y-axis motion frame 24. An X-axis motion frame 27 is fixedly connected to the threaded rod 26. A motor 38 is fixedly connected to one side of the X-axis motion frame 27. A threaded rod 39 is threadedly connected inside the motor 38. A Z-axis motion frame 30 is fixedly connected to the bottom of the threaded rod 39. A sampling plate 7 is locked to the outer wall of the Z-axis motion frame 30. A pressure sensor 31 is fixedly connected to one side of the sampling plate 7.

[0035] Reference Figure 2 , Figure 4 and Figure 5 The locking assembly 4 includes a fixed rod 15. The locking assembly 4 enables quick locking connection and separation between the sampling plate 7 and other components and the Z-axis motion frame 30, facilitating the installation, replacement and maintenance of related components, while ensuring the stability after connection. Auxiliary structures such as spring 20 can assist in the smoothness of locking action and reset. Four locking ball grooves 16 are opened on both sides of the bottom of the fixed rod 15. A locking sleeve 17 is slidably connected to the outer wall of the fixed rod 15. Locking balls 18 are provided on both sides of the locking ball grooves 16. The locking balls 18 are slidably connected inside the fixed rod 15 and the locking sleeve 17. A spring box 19 is slidably connected to the top of the fixed rod 15. Spring 20 is fixedly connected inside the spring box 19. A crossbar 21 is provided inside the spring box 19. Spring 20 is fixedly connected to one side of the crossbar 21, and spring 20 is fixedly connected to the outer wall of the fixed rod 15 on the other side.

[0036] Working Principle: First, the overload protection component 5 uses a small motor 6 as its core power source to drive the rotating rod 8 to rotate. This rotation is transmitted through the rod sleeve 9, causing the sampling rod 13 and sampling needle 14 to perform sampling actions. Spring 10 acts as a buffer; when the sampling needle 14 encounters an overload (such as a collision or excessive resistance), spring 10 compresses, absorbing the impact energy. Simultaneously, the two overload protection plates 11 with racks 12 mesh, stably transmitting power under normal conditions. During an overload, the meshing structure slides or disengages, cutting off or altering the force transmission path, preventing damage to the sampling needle 14 and sampling rod 13 due to excessive force. Pressure sensor 31 monitors pressure changes in the sampling disk 7, assisting in determining the overload state and collaboratively achieving overload protection, ensuring the safe and stable operation of the component.

[0037] The fixing rod 15 of the locking assembly 4 serves as the base support, with locking ball grooves 16 on both sides of its bottom for accommodating locking balls 18. The locking sleeve 17 can slide on the outer wall of the fixing rod 15. When locking is required, pushing the locking sleeve 17 moves the locking ball 18, which is then pressed into the locking ball groove 16, ensuring a stable connection between the fixing rod 15, the locking sleeve 17, and connecting components (such as the Z-axis motion frame 30). When unlocking, sliding the locking sleeve 17 in the opposite direction causes the locking ball 18 to slide out of the locking ball groove 16, disengaging the connection. The spring 20 inside the spring box 19 provides elasticity, which acts on the fixing rod 15 through the crossbar 21. After the locking action, it assists the locking sleeve 17 in resetting, ensuring smooth operation for the next locking action, achieving fast and stable connection and separation, and ensuring convenient assembly and maintenance of the sampling assembly.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 sampling component for a fully automated sample detection device, comprising a frame (1), characterized in that: The frame (1) has a sliding groove (2) at its top, and a three-dimensional motion component (3) is provided at the top of the frame (1). The three-dimensional motion component (3) is fixedly connected to a locking component (4), and the three-dimensional motion component (3) is fixedly connected to an overload protection component (5). The overload protection component (5) includes a small motor (6), and a sampling disk (7) is fixedly connected to the bottom of the small motor (6). A rotating rod (8) is rotatably connected to the drive end of the small motor (6), and a rod sleeve (9) is fixedly connected to the bottom of the rotating rod (8). The rod sleeve (9) is fixedly connected inside. A spring (10) is attached, and two overload protection plates (11) are fixedly connected to the bottom of the spring (10). One side of the overload protection plate (11) has a rack (12), and the two overload protection plates (11) with racks (12) mesh with each other. The outer wall of the rod sleeve (9) is fixedly connected to the inside of the overload protection plate (11). A sampling rod (13) is fixedly connected to the bottom of the overload protection plate (11), and a sampling needle (14) is fixedly connected to the bottom of the sampling rod (13). The sampling rod (13) is slidably connected to the inside of the rod sleeve (9).

2. The sampling component for a fully automated sample detection device according to claim 1, characterized in that: The locking assembly (4) includes a fixed rod (15), four locking ball grooves (16) are provided on both sides of the bottom of the fixed rod (15), a locking sleeve (17) is slidably connected to the outer wall of the fixed rod (15), and locking balls (18) are provided on both sides of the locking ball grooves (16). The locking balls (18) are slidably connected inside the fixed rod (15) and the locking sleeve (17).

3. The sampling component for a fully automated sample detection device according to claim 2, characterized in that: The top of the fixed rod (15) is slidably connected to a spring box (19), and a second spring (20) is fixedly connected inside the spring box (19).

4. The sampling assembly for a fully automated sample testing device of claim 3, wherein: A crossbar (21) is provided inside the spring box (19). A second spring (20) is fixedly connected to one side of the crossbar (21), and the other side of the crossbar (21) is fixedly connected to the outer wall of the fixing rod (15).

5. The sampling assembly for a fully automated sample testing device of claim 1, wherein: The three-dimensional motion component (3) includes a motor (22), the drive end of which is rotatably connected to a threaded rod (23). The motor (22) is fixedly connected to the top of the frame (1). A Y-axis motion frame (24) is provided on the top of the frame (1). The threaded rod (23) is threadedly connected to the inside of the Y-axis motion frame (24). The Y-axis motion frame (24) is slidably connected to the inside of the slide groove (2).

6. The sampling assembly for a fully automated sample testing device of claim 5, wherein: A motor (25) is fixedly connected to one side of the Y-axis motion frame (24). A threaded rod (26) is rotatably connected to the drive end of the motor (25). The threaded rod (26) is threadedly connected to the inside of the Y-axis motion frame (24). An X-axis motion frame (27) is fixedly connected to the threaded rod (26).

7. The sampling assembly for a fully automated sample testing device of claim 6, wherein: The X-axis motion frame (27) is fixedly connected to a motor three (28) on one side, and the motor three (28) is internally threaded with a threaded rod three (29), and the bottom of the threaded rod three (29) is fixedly connected to a Z-axis motion frame (30).

8. The sampling component for a fully automated sample detection device according to claim 7, characterized in that: The outer wall of the Z-axis motion frame (30) is locked with a sampling disk (7), and a pressure sensor (31) is fixedly connected to one side of the sampling disk (7).

Images