Accurate positioning type blood collection tube cover device
The combination structure of the cap positioning seat, gripper plate, arc-shaped rubber pad and limiting plate solves the problem of inaccurate positioning of the blood collection tube cap, realizes the precision of cap closing and efficient assembly, and reduces labor intensity and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN MINGYUAN WELLCOME TECH CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-26
AI Technical Summary
In existing technologies, the caps of blood collection tubes cannot be accurately positioned and are inconvenient to separate while being closed, resulting in low assembly efficiency and high labor intensity.
The system employs a combination structure of a cover positioning seat, a gripper plate, an arc-shaped rubber pad, a second spring, and a limiting plate. The slide is driven by a cylinder to move, achieving precise positioning and separation of the cover body and ensuring that the cover is accurately placed on the blood collection tube.
It achieves precise positioning and efficient assembly of blood collection tube caps, reducing labor intensity and costs, and improving assembly efficiency.
Smart Images

Figure CN224411342U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blood collection tube cap technology, specifically a precision positioning blood collection tube cap device. Background Technology
[0002] When testing blood collection tubes, the caps are opened and closed manually. This manual method is inefficient, labor-intensive, and costly. Using machinery to close the caps can greatly improve the assembly efficiency of blood collection tubes.
[0003] According to the publication number (CN220300383U), a blood collection tube opening and closing mechanism is disclosed, which includes: a horizontal moving mechanism, a vertical moving mechanism disposed at the output end of the horizontal moving mechanism, a closing mechanism for ejecting the cap and a closing mechanism for clamping the cap disposed at the output end of the vertical moving mechanism, a blood collection tube storage mechanism, a blood collection tube clamping mechanism, and a drip-proof platform.
[0004] The technical solution has at least the following drawbacks: although the invention can assemble and close the blood collection tube and the cap, it cannot precisely position the cap, and it is inconvenient to separate the cap while closing it, which urgently needs improvement. Therefore, we propose a precise positioning blood collection tube cap device. Utility Model Content
[0005] The purpose of this invention is to provide a precise positioning blood collection tube cap device, which solves the problems mentioned in the background technology, such as the inability to precisely position the cap and the inconvenience of separating the positioning while closing the cap.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a precision positioning blood collection tube cap device, including a cap positioning seat, with cylinders provided on both sides of the upper end of the cap positioning seat, the output end of the cylinders being detachably connected to the upper end of the cap positioning seat, a plurality of gripper plates provided at the lower end of the cap positioning seat, a cap body provided on the inner side of the gripper plates, positioning plates provided on both sides of the cap body, and an arc-shaped rubber pad fixedly installed in the middle of the inner side of the positioning plate;
[0007] A fixing plate is fixedly installed on the upper end of the positioning plate. A wedge block is integrally formed on the outer side of the fixing plate. A top rod is provided on the inner side of the upper end of the gripper plate. A slide is provided on the outer side of the positioning plate, and the slide is slidably connected to the positioning plate. A sliding groove is opened on the inner side of the gripper plate. A limit plate is fixedly installed on the upper end of the inner cavity of the gripper plate.
[0008] By adopting the above technical solution, the positioning plate can drive the arc-shaped rubber pad to press against the outside of the cover body, thereby pressing and positioning the cover body. This ensures that the cover is accurately positioned in the middle of the gripper plate, making it convenient for the cover to be closed on top of the blood collection tube. When the cylinder drives the cover positioning seat downward, it can also push the slide to move upward, compressing the second spring. At the same time, the wedge block moves upward with the positioning plate. When the wedge block loses the pushing force of the push rod, the first spring drives the positioning plate to move outward and reset, thereby separating the arc-shaped rubber pad on the positioning plate from the cover body. Then, the continued downward pressing of the cover positioning seat will drive the cover body to press against the limiting plate, thereby allowing the limiting plate to close and assemble the cover body and the blood collection tube, thus ensuring the accuracy of the cover body assembly.
[0009] Optionally, the size of the slide block is adapted to the size of the slide groove, and the slide block and the slide groove are slidably connected.
[0010] By adopting the above technical solution, and through the cooperation of the slide block and the slide groove, it can be ensured that the positioning plate can be separated from the cover body when the cover is closed.
[0011] Optionally, a second spring is fixedly installed in the inner cavity of the slide, and the other end of the second spring is fixedly connected to the slide block.
[0012] By adopting the above technical solution, the second spring can be used to drive the slide block to move downwards and reset, thereby causing the wedge block to abut against the top rod.
[0013] Optionally, a first spring is fixedly installed on the inner side of the slide, and the other end of the first spring is fixedly connected to the positioning plate.
[0014] By adopting the above technical solution, the first spring can be used to drive the arc-shaped rubber pad to press against the outside of the lid body, thereby positioning the lid body.
[0015] Optionally, the wedge block is disposed on one side of the top rod, and the wedge block is in contact with the top rod.
[0016] By adopting the above technical solution, the first spring can be stretched through the cooperation of the wedge block and the push rod, thereby facilitating the first spring to drive the arc-shaped rubber pad to reset.
[0017] Optionally, through slots are provided on both sides of the limiting plate.
[0018] By adopting the above technical solution and setting the through groove, the fixing plate and the wedge block can pass through both sides of the limiting plate, thus avoiding interference.
[0019] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:
[0020] The technical solution of this application, through the setting of a cover positioning seat, a gripper plate, a cover body, an arc-shaped rubber pad, a second spring, and a limiting plate, allows the positioning plate to drive the arc-shaped rubber pad to press against the outside of the cover body, thereby pressing and positioning the cover body. This ensures that the cover is accurately positioned in the middle of the gripper plate, facilitating the cover to be closed on top of the blood collection tube. When the cylinder drives the cover positioning seat downward, it can push the slide to move upward, compressing the second spring. At the same time, the wedge block moves upward with the positioning plate. When the wedge block loses the pushing force of the push rod, the first spring drives the positioning plate to move outward and reset, thereby separating the arc-shaped rubber pad on the positioning plate from the cover body. Then, the continued downward pressure of the cover positioning seat will drive the cover body to press against the limiting plate, thereby allowing the limiting plate to close and assemble the cover body and the blood collection tube, thus ensuring the accuracy of the cover body assembly. Attached Figure Description
[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0022] Figure 1 This is a schematic diagram of the overall structure of a precision positioning blood collection tube cap device according to this utility model;
[0023] Figure 2 This is a three-dimensional structural diagram of the positioning plate and wedge block of a precision positioning blood collection tube cap device according to this utility model;
[0024] Figure 3 This is a partially enlarged structural diagram of section A of the precision positioning blood collection tube cap device of this utility model.
[0025] In the diagram: 1. Cover positioning seat; 11. Cylinder; 12. Gripper plate; 13. Cover body; 2. Positioning plate; 21. Arc-shaped rubber pad; 22. Fixing plate; 23. Wedge block; 24. Top rod; 25. First spring; 26. Slide seat; 27. Slide groove; 28. Second spring; 3. Limiting plate. Detailed Implementation
[0026] Please see Figure 1-3 This utility model provides a technical solution: a precision positioning blood collection tube cap device, including a cap positioning seat 1, with cylinders 11 on both sides of the upper end of the cap positioning seat 1, the output end of the cylinders 11 being detachably connected to the upper end of the cap positioning seat 1, and multiple gripper plates 12 on the lower end of the cap positioning seat 1, with a cap body 13 on the inner side of the gripper plates 12, and positioning plates 2 on both sides of the cap body 13, with an arc-shaped rubber pad 21 fixedly installed in the middle of the inner side of the positioning plate 2;
[0027] A fixing plate 22 is fixedly installed on the upper end of the positioning plate 2. A wedge-shaped block 23 is integrally formed on the outer side of the fixing plate 22. A push rod 24 is provided on the inner side of the upper end of the gripper plate 12. A slide 26 is provided on the outer side of the positioning plate 2, and the slide 26 is slidably connected to the positioning plate 2. A sliding groove 27 is opened on the inner side of the gripper plate 12. A limit plate 3 is fixedly installed on the upper end of the inner cavity of the gripper plate 12. A first spring 25 is fixedly installed on the inner side of the slide 26. The other end of the first spring 25 is fixedly connected to the positioning plate 2. Through the setting of the first spring 25, thereby... The curved rubber pad 21 can be driven to press against the outside of the lid body 13 to position the lid body 13. The wedge block 23 is set on one side of the top rod 24 and the wedge block 23 is in contact with the top rod 24. Through the cooperation of the wedge block 23 and the top rod 24, the first spring 25 can be stretched, which facilitates the first spring 25 to drive the curved rubber pad 21 to reset. The limiting plate 3 has through slots on both sides. Through the setting of the through slots, the fixing plate 22 and the wedge block 23 can pass through both sides of the limiting plate 3 to avoid interference.
[0028] The dimensions of the slide block 26 are adapted to the dimensions of the slide groove 27, and the slide block 26 and the slide groove 27 are slidably connected. Through the cooperation of the slide block 26 and the slide groove 27, it can be ensured that the positioning plate 2 can be separated from the cover body 13 when the cover body 13 is closed.
[0029] A second spring 28 is fixedly installed in the inner cavity of the slide groove 27. The other end of the second spring 28 is fixedly connected to the slide block 26. By setting the second spring 28, the second spring 28 can drive the slide block 26 to move downward and reset, thereby driving the wedge block 23 to abut against the top rod 24.
[0030] During positioning, the cover is first inserted into the gripper plate 12. The first spring 25 drives the positioning plate 2 to move towards the center, causing the positioning plate 2 to move the arc-shaped rubber pad 21 against the outside of the cover body 13, thereby pressing and positioning the cover body 13. This ensures that the cover is accurately positioned in the center of the gripper plate 12, making it easy for the cover to close on top of the blood collection tube. When the cylinder 11 moves the cover positioning seat 1 downward, initially the cover body 13 contacts the upper edge of the blood collection tube. At this time, it will push the slide 26 upward. At the same time, the second spring 28 is compressed, and the wedge block 23 moves upward with the positioning plate 2. At this time, after the wedge block 23 loses the pushing force of the push rod 24, the first spring 25 drives the positioning plate 2 to move outward and reset, so that the arc-shaped rubber pad 21 on the positioning plate 2 separates from the cover body 13. Then, the cover positioning seat 1, which continues to press down, will drive the cover body 13 to abut against the limiting plate 3, so that the limiting plate 3 can cover and assemble the cover body 13 and the blood collection tube, thereby ensuring the accuracy of the assembly of the cover body 13.
Claims
1. A precision positioning blood collection tube cap device, comprising a cap positioning seat (1), characterized in that: The upper end of the lid positioning seat (1) is provided with cylinders (11) on both sides. The output end of the cylinders (11) is detachably connected to the upper end of the lid positioning seat (1). The lower end of the lid positioning seat (1) is provided with multiple gripper plates (12). The inner side of the gripper plate (12) is provided with the lid body (13). The two sides of the lid body (13) are provided with positioning plates (2). An arc-shaped rubber pad (21) is fixedly installed in the middle of the inner side of the positioning plate (2). A fixing plate (22) is fixedly installed on the upper end of the positioning plate (2). A wedge block (23) is integrally formed on the outer side of the fixing plate (22). A top rod (24) is provided on the inner side of the upper end of the gripper plate (12). A slide (26) is provided on the outer side of the positioning plate (2), and the slide (26) is slidably connected to the positioning plate (2). A sliding groove (27) is opened on the inner side of the gripper plate (12). A limit plate (3) is fixedly installed on the upper end of the inner cavity of the gripper plate (12).
2. The precision positioning blood collection tube cap device according to claim 1, characterized in that: The dimensions of the slide block (26) are adapted to the dimensions of the slide groove (27), and the slide block (26) and the slide groove (27) are slidably connected.
3. The precision positioning blood collection tube cap device according to claim 2, characterized in that: The inner cavity of the slide (27) is fixedly installed with a second spring (28), and the other end of the second spring (28) is fixedly connected to the slide (26).
4. The precision positioning blood collection tube cap device according to claim 3, characterized in that: A first spring (25) is fixedly installed on the inner side of the slide (26), and the other end of the first spring (25) is fixedly connected to the positioning plate (2).
5. The precision positioning blood collection tube cap device according to claim 4, characterized in that: The wedge block (23) is disposed on one side of the top rod (24), and the wedge block (23) is in contact with the top rod (24).
6. The precision positioning blood collection tube cap device according to claim 5, characterized in that: The limiting plate (3) has through slots on both sides.