High-precision up-and-down movement device
By designing high-precision up and down motion devices in the biochemical analyzer, using the combination of a micro stepper motor and wear-resistant slip body, the automatic rebound and accurate movement of the probe cleaning assembly is achieved, and the inaccurate stroke and non-flexibility of the existing device are solved. The problem is suitable for a variety of reaction cup models, avoiding the collision between the cleaning needle and the reaction cup, and improving the versatility and accuracy of the device.
Patent Information
- Application Number
- CN202420123398.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-01-18
AI Technical Summary
The existing up and down movement devices are inaccurate and flexible in the biochemical analyzer, and cannot be compatible with various types of reaction cups, resulting in rigid collision between the cleaning needle and the reaction cup, causing product damage.
A high-precision up and down movement device including an up and down drive assembly, an up and down moving rod assembly and a probe cleaning assembly is designed. Through the combination of a micro stepper motor, a macro rod and a wear-resistant slip body, the probe cleaning assembly is realized in collision. It automatically rebounds and performs physical and electronic control through the induction plate and sensor to ensure motion accuracy and versatility.
High-precision cleaning on various types of reaction cups is achieved, which avoids rigid collision between the cleaning needle and the reaction cup, improves the flexible design and motion accuracy of the device, and is suitable for a variety of reaction cup models.
Smart Images
Figure CN222343701U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an up-and-down motion device, in particular to a high-precision up-and-down motion device. Background Art
[0002] Biochemical analyzer, also known as biochemical analyzer, is an instrument that uses the principle of photoelectric colorimetry to measure a specific chemical component in body fluids. Due to its fast measurement speed, high accuracy, and small reagent consumption, it is now widely used in hospitals, epidemic prevention stations, and family planning service stations at all levels. The combined use can greatly improve the efficiency and benefits of routine biochemical tests.
[0003] A cleaning structure needs to be set up in the biochemical analyzer to clean the reaction cup. Specifically, an up-and-down motion device is used in combination with a cleaning needle to clean the reaction cup, that is, the up-and-down motion device drives the cleaning needle to contact the reaction cup and then move up and down to clean it. However, the existing up-and-down motion device has a certain stroke, and the accuracy of the moving stroke is not high. In addition, it does not have a certain flexibility effect. Since there are various types of reaction cups in the analyzer, the up-and-down motion device with a certain stroke cannot be compatible with various types of reaction cups because the bottom distances of the reaction cups are different, which easily causes the cleaning needle to rigidly collide with the reaction cup, causing damage to the product. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a high-precision up-and-down motion device with reasonable design, good versatility and automatic rebound effect after collision.
[0005] The technical solution adopted by the utility model is: the utility model includes an up and down driving assembly, an up and down moving rod assembly, a probe cleaning assembly and an installation shell, the lower end of the up and down moving rod assembly is slidably connected to the installation shell, the output end of the up and down driving assembly extends into the installation shell and contacts the up and down moving rod assembly, the probe cleaning assembly is installed at the upper end of the up and down moving rod assembly, the up and down driving assembly is used to drive the up and down movement of the up and down moving rod assembly, so that the probe cleaning assembly can move up and down for cleaning, when the probe cleaning assembly moves downward and collides with the reaction cup, it will link to generate an upward force to the up and down moving rod assembly, so that the up and down moving rod assembly is separated from the up and down driving assembly and moves upward in the installation shell, and then the probe cleaning assembly rebounds when it collides with the reaction cup.
[0006] Furthermore, the up and down driving components include a micro stepping motor, a macro screw and a wear-resistant slide, the lower end of the wear-resistant slide is provided with an internal threaded cavity adapted to the macro screw, the micro stepping motor is installed at the lower end of the mounting shell, one end of the macro screw is connected to the micro stepping motor, and the other end of the macro screw is connected to the internal threaded cavity, and the micro stepping motor is used to drive the macro screw to rotate forward or reverse, so that the wear-resistant slide moves upward or downward.
[0007] Furthermore, the up and down moving rod assembly includes a moving block and a moving vertical rod, the moving block is slidably installed on the upper part of the mounting shell, the lower end of the moving block is provided with an inner sleeve hole, the inner sleeve hole is adapted to the upper end of the wear-resistant sliding body, the upper end of the wear-resistant sliding body is sleeved in the inner sleeve hole, and the lower end of the moving vertical rod is fixed to the upper end of the moving block.
[0008] Furthermore, a sensing sheet is provided at the outer end of the moving block, a sliding groove is provided at the upper front end of the mounting shell, and sensors matching the sensing sheet are provided at the upper and lower ends of the sliding groove.
[0009] Furthermore, the probe cleaning assembly includes a connecting cross plate, a probe mounting seat and a cleaning probe, one end of the connecting cross plate is fixed to the upper end of the movable vertical pole, the probe mounting seat is installed at the other end of the connecting cross plate, and the cleaning probe is fixedly installed in the probe mounting seat.
[0010] Furthermore, sliding columns are symmetrically arranged at both ends of the mounting shell, one of the sliding columns is sleeved with a spring, and a spring pressure block is sleeved and fixed on the upper end of the wear-resistant sliding body, and one end of the spring pressure block is sleeved in the sliding column and located at the upper end of the spring.
[0011] Furthermore, sliding sleeves are symmetrically arranged at both ends of the moving block, and the two sliding sleeves are respectively sleeved on the two sliding columns.
[0012] Furthermore, a sliding sleeve matched with the sliding column is arranged on the top of the mounting shell.
[0013] The beneficial effects of the utility model are: 1. The upper and lower driving components and the upper and lower moving rod components are connected in a contact but non-fixed manner, so that the needle cleaning component can automatically rebound after colliding with the reaction cup, thereby making the utility model more flexible in design and applicable to various types of reaction cups; 2. Sensors compatible with the induction sheet are provided at both ends of the up and down movement stroke, that is, at the upper and lower ends of the sliding groove, and the transmission of the micro stepping motor, the micro pitch screw and the wear-resistant sliding body is coordinated, so that the up and down movement stroke of the utility model has both physical and electronic dual control, and the movement accuracy is higher. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model;
[0015] Figure 2 It is a side view of the utility model;
[0016] Figure 3 It is a cross-sectional view of the utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the utility model after the installation shell is hidden;
[0018] Figure 5 yes Figure 3 A magnified schematic diagram of part A;
[0019] Figure 6 It is a structural diagram of the moving block. DETAILED DESCRIPTION
[0020] like Figures 1 to 6 As shown, in this embodiment, the utility model includes an up and down driving component 1, an up and down moving rod component 2, a probe cleaning component 3 and a mounting shell 4, the lower end of the up and down moving rod component 2 is slidably connected to the mounting shell 4, the output end of the up and down driving component 1 extends into the mounting shell 4 and contacts the up and down moving rod component 2, the probe cleaning component 3 is mounted on the upper end of the up and down moving rod component 2, the up and down driving component 1 is used to drive the up and down movement of the up and down moving rod component 2, so that the probe cleaning component 3 can perform up and down movement cleaning, when the probe cleaning component 3 moves downward and collides with the reaction cup, it will link to generate an upward force to the up and down moving rod component 2, so that the up and down moving rod component 2 is separated from the up and down driving component 1 and moves upward in the mounting shell 4, and then the probe cleaning component 3 rebounds when it collides with the reaction cup.
[0021] In this embodiment, the up and down driving assembly 1 includes a micro-stepping motor 11, a macro screw 12 and a wear-resistant slide 13. The lower end of the wear-resistant slide 13 is provided with an internal threaded cavity 131 adapted to the macro screw 12. The micro-stepping motor 11 is installed at the lower end of the mounting shell 4. One end of the macro screw 12 is connected to the micro-stepping motor 11, and the other end of the macro screw 12 is connected to the internal threaded cavity 131. The micro-stepping motor 11 is used to drive the macro screw 12 to rotate forward or reverse, so that the wear-resistant slide 13 moves upward or downward. This design drives the transmission of the macro screw 12 through the micro-stepping motor 11, and adopts the precise matching of the wear-resistant slide 13 and the macro screw 12, so that the up and down movement stroke control of the utility model is more precise, and the wear-resistant slide 13 can also effectively improve the service life of the up and down driving assembly 1.
[0022] In this embodiment, the up-and-down moving rod assembly 2 includes a moving block 21 and a moving vertical rod 22. The moving block 21 is slidably mounted on the upper part of the mounting shell 4. The lower end of the moving block 21 is provided with an inner sleeve hole 211. The inner sleeve hole 211 is adapted to the upper end of the wear-resistant sliding body 13. The upper end of the wear-resistant sliding body 13 is sleeved in the inner sleeve hole 211. More specifically, the bottom opening of the inner sleeve hole 211 is a trumpet step opening. The wear-resistant sliding body 13 is a cylinder, and the top of the cylinder is provided with a trumpet step opening. The opening is adapted to the truncated cone slope, and the lower end of the movable vertical rod 22 is fixed to the upper end of the movable block 21. This design can make the wear-resistant sliding body 13 effectively support the movable block 21, and can drive the movable block 21 to move up and down under the drive of the micro stepping motor 11. In addition, the surface contact connection method can also make the probe cleaning component 3 rebound when it collides with the reaction cup. Specifically, the rebound force generated by the collision of the probe cleaning component 3 can drive the entire up and down movable rod component 2 to bounce upward and temporarily disengage from the up and down driving component 1.
[0023] In this embodiment, a sensing sheet 23 is provided at the outer end of the moving block 21, a sliding groove 41 is provided at the upper front end of the mounting shell 4, and sensors 42 adapted to the sensing sheet 23 are provided at the upper and lower ends of the sliding groove 41; this design is used to further control the up and down movement stroke of the utility model.
[0024] In this embodiment, the probe cleaning assembly 3 includes a connecting cross plate 31, a probe mounting seat 32 and a cleaning probe 33. One end of the connecting cross plate 31 is fixed to the upper end of the movable vertical pole 22, and the probe mounting seat 32 is installed at the other end of the connecting cross plate 31. The cleaning probe 33 is fixedly installed in the probe mounting seat 32.
[0025] In this embodiment, sliding columns 43 are symmetrically arranged at both ends of the mounting shell 4, one of the sliding columns 43 is sleeved with a spring 44, and a spring pressure block 131a is sleeved and fixed on the upper end of the wear-resistant sliding body 13, and one end of the spring pressure block 131a is sleeved in the sliding column 43 and located at the upper end of the spring 44.
[0026] In this embodiment, sliding sleeves 24 are symmetrically provided at both ends of the moving block 21 , and the two sliding sleeves 24 are respectively sleeved on the two sliding columns 43 . This design is conducive to better up and down movement of the moving block 21 .
[0027] In this embodiment, a sliding sleeve 45 matched with the sliding column 43 is arranged on the top of the mounting shell 4. This design is conducive to better up and down movement of the sliding column 43.
[0028] The utility model is applied to the technical field of biochemical analyzers.
[0029] Although the embodiments of the present invention are described with practical solutions, they do not constitute limitations on the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.
Claims
1. A high-precision up-and-down motion device, characterized in that: It comprises an up-and-down driving assembly (1), an up-and-down moving rod assembly (2), a probe cleaning assembly (3) and a mounting shell (4); the lower end of the up-and-down moving rod assembly (2) is slidably connected to the mounting shell (4); the output end of the up-and-down driving assembly (1) extends into the mounting shell (4) and contacts the up-and-down moving rod assembly (2); the probe cleaning assembly (3) is mounted on the upper end of the up-and-down moving rod assembly (2); the up-and-down driving assembly (1) is used to drive the up-and-down moving rod assembly (2) to move up and down, so that the probe cleaning assembly (3) can move up and down to clean; when the probe cleaning assembly (3) moves downward and collides with a reaction cup, it will link to generate an upward force on the up-and-down moving rod assembly (2), so that the up-and-down moving rod assembly (2) is separated from the up-and-down driving assembly (1) and moves upward in the mounting shell (4), so that the probe cleaning assembly (3) rebounds when it collides with the reaction cup; The up-and-down driving assembly (1) comprises a micro-stepping motor (11), a micro-screw (12) and a wear-resistant sliding body (13); the lower end of the wear-resistant sliding body (13) is provided with an internal thread cavity (131) adapted to the micro-screw (12); the micro-stepping motor (11) is mounted on the lower end of the mounting housing (4); one end of the micro-screw (12) is connected to the micro-stepping motor (11); the other end of the micro-screw (12) is connected to the internal thread cavity (131); the micro-stepping motor (11) is used to drive the micro-screw (12) to rotate forward or reverse, so that the wear-resistant sliding body (13) moves upward or downward; The up-and-down moving rod assembly (2) comprises a moving block (21) and a moving upright rod (22); the moving block (21) is slidably mounted on the upper portion of the mounting shell (4); an inner sleeve hole (211) is provided at the lower end of the moving block (21); the inner sleeve hole (211) is matched with the upper end of the wear-resistant sliding body (13); the upper end of the wear-resistant sliding body (13) is sleeved in the inner sleeve hole (211); and the lower end of the moving upright rod (22) is fixed to the upper end of the moving block (21).
2. A high-precision up-and-down motion device according to claim 1, characterized in that: The outer end of the moving block (21) is provided with a sensing sheet (23), the upper front end of the mounting housing (4) is provided with a sliding groove (41), and the upper and lower ends of the sliding groove (41) are provided with sensors (42) adapted to the sensing sheet (23).
3. A high-precision up-and-down motion device according to claim 1, characterized in that: The probe cleaning assembly (3) comprises a connecting transverse plate (31), a probe mounting seat (32) and a cleaning probe (33); one end of the connecting transverse plate (31) is fixed to the upper end of the movable vertical pole (22); the probe mounting seat (32) is mounted on the other end of the connecting transverse plate (31); and the cleaning probe (33) is fixedly mounted in the probe mounting seat (32).
4. A high-precision up-and-down motion device according to claim 1, characterized in that: Sliding columns (43) are symmetrically arranged at both ends of the mounting shell (4), wherein a spring (44) is sleeved in one of the sliding columns (43), and a spring pressure block (131a) is sleeved and fixed on the upper end of the wear-resistant sliding body (13), and one end of the spring pressure block (131a) is sleeved in the sliding column (43) and located at the upper end of the spring (44).
5. A high-precision up-and-down motion device according to claim 4, characterized in that: Sliding sleeves (24) are symmetrically arranged at both ends of the moving block (21), and the two sliding sleeves (24) are respectively sleeved on the two sliding columns (43).
6. A high-precision up-and-down motion device according to claim 5, characterized in that: A sliding sleeve (45) adapted to the sliding column (43) is provided on the top of the installation housing (4).