Test tube cover, vacuum blood collection tube and tool

Abstract

The utility model relates to a test tube cover, a vacuum blood collection tube and a tool which can be better suitable for automatic assembly. According to the technical scheme, the test tube cover comprises a hollow test tube cover body, the test tube cover body is provided with a plug type main body which is in interference fit with a test tube opening, a frustum which is integrally formed at the bottom of the plug type main body and a flange which is integrally formed at the top of the plug type main body, a through hole is formed in the bottom of the frustum, and an annular positioning concave table is arranged on the inner side of the joint of the plug type main body and the flange; an annular positioning boss is arranged on the outer side of the connecting position of the plug type body and the frustum, and an annular pressure applying face is arranged in the connecting position.

Description

Technical Field

[0001] The utility model belongs to the field of medical equipment, and in particular relates to a medical test tube. Background Art

[0002] Vacuum blood collection tubes are disposable, negative-pressure vacuum glass tubes used for quantitative blood collection. Traditional evacuum blood collection tubes consist of a test tube and a cap attached to the tube's opening, typically using a screw-type or plug-type connection. Traditional caps, whether screw-type or plug-type, are difficult to adapt to automated assembly. This is primarily due to the difficulty in conveying the cap, which can easily become stuck or misaligned, leading to assembly failures and reduced efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a test tube cover, a vacuum blood collection tube and a tooling that are better suitable for automatic assembly.

[0004] In order to solve the above problems, the technical solution adopted by the present invention includes: a hollow test tube cover body, characterized in that: the test tube cover body is provided with a plug-type body that is interference fit with the test tube mouth, a frustum integrally formed at the bottom of the plug-type body and a flange integrally formed at the top of the plug-type body, a through hole is provided at the bottom of the frustum, an annular positioning recess is provided on the inner side of the connection between the plug-type body and the flange, an annular positioning boss is provided on the outer side of the connection between the plug-type body and the frustum, and an annular pressure surface is provided inside the connection; after the test tube cover bodies are stacked, the annular positioning boss is positioned on the adjacent annular positioning recess.

[0005] The test tube cover is characterized in that a positioning rib is integrally formed on the inner wall of the frustum, and when two test tube cover bodies are stacked, the bottom of the frustum is positioned on the positioning rib.

[0006] The test tube cover is characterized in that a conical transition surface is provided on the outer side of the connection between the plug-type body and the flange.

[0007] The test tube cover is characterized in that a top rod groove is integrally formed at the bottom of the frustum.

[0008] A vacuum blood collection tube comprises a test tube, characterized in that the test tube opening of the test tube is provided with the test tube cover described in any one of the above items.

[0009] A tool for accommodating any of the test tube caps described above, characterized in that it comprises a cylindrical body, and the side wall of the cylindrical body is provided with test tube cap accommodating grooves arranged circumferentially and axially through.

[0010] The tooling is characterized in that the test tube cover receiving groove is provided with an axially extending slot.

[0011] The tooling is characterized in that a positioning boss is provided at the bottom of the test tube cover receiving groove.

[0012] The test tube cover, vacuum blood collection tube and tooling of the present invention have the following advantages: a plurality of test tube cover bodies can be overlapped and placed in the test tube cover receiving groove of the tooling, and then the test tube cover bodies can be pushed out one by one to the top of the tooling by the push rod at the bottom. After being pushed out, they can be very conveniently clamped and combined by a robot, thereby facilitating automated assembly and greatly improving assembly efficiency and yield rate.

[0013] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the test tube cover of the utility model;

[0015] Figure 2 It is a cross-sectional view of the test tube cover of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the test tube covers of the present invention after being overlapped;

[0017] Figure 4 This is a schematic structural diagram of the vacuum blood collection tube of the utility model;

[0018] Figure 5 It is a structural diagram of the utility model tooling;

[0019] Figure 6 It is a cross-sectional view of the utility model tool;

[0020] Figure 7 It is a schematic diagram of the working principle of the utility model tooling. DETAILED DESCRIPTION Embodiment 1:

[0021] Reference Figure 1-3As shown, the test tube cap of the present invention comprises a hollow test tube cap body 1. The test tube cap body 1 comprises a plug-type body 2 that interference fits with the mouth of a test tube, a frustum 3 integrally formed at the bottom of the plug-type body 2, and a flange 4 integrally formed at the top of the plug-type body 2. The frustum 3 has a through-hole 5 at its bottom. The frustum 3 serves as a guide and positioning mechanism during assembly, while the through-hole 5 acts as an air vent, facilitating proper insertion of the test tube cap body 1. An annular positioning recess 6 is provided on the inner side of the connection between the plug-type body 2 and the flange 4, an annular positioning protrusion 7 is provided on the outer side of the connection between the plug-type body 2 and the frustum 3, and an annular pressure surface 8 is provided on the inner side of the connection between the plug-type body 2 and the frustum 3. When multiple test tube cap bodies 1 are stacked, the annular positioning protrusions 7 are positioned against adjacent annular positioning recesses 6, allowing the plug-type body 2 of the upper test tube cap body 1 to extend beyond the lower test tube cap body 1. During automated assembly, it is convenient for a robot to grasp the plug-type body 2, and since an annular pressure surface 8 is provided inside the connection between the plug-type body 2 and the cone 3, after the robot places the test tube cover body 1 on the test tube mouth, a pressing rod can be directly provided on the robot to press the annular pressure surface 8 and insert the plug-type body 2 into the test tube, thereby greatly improving the assembly efficiency.

[0022] Preferably, the inner wall of the frustum 3 is integrally formed with a positioning rib 9. When two test tube cap bodies 1 are stacked, the bottom of the frustum 3 is positioned on the positioning rib 9. This further improves the positioning efficiency between the test tube cap bodies 1 and prevents the two test tube cap bodies 1 from completely overlapping, which would prevent the robot from gripping them. Furthermore, the positioning rib 9 also enhances the strength of the frustum 3.

[0023] Preferably, a tapered transition surface 10 is provided on the outer side of the connection between the plug-type body 2 and the flange 4. The tapered transition surface 10 can be tightly interference-fitted with the test tube mouth to improve the sealing performance.

[0024] Preferably, a push rod groove 11 is integrally formed at the bottom of the frustum 3 to cooperate with the push rod of the automatic assembly machine so that the test tube cover can be ejected more stably. Example 2:

[0025] Reference Figure 4 As shown, a vacuum blood collection tube of the present invention includes a test tube 13, wherein the test tube opening of the test tube 13 is provided with the test tube cover a described in Example 1. Note: In actual application, the test tube cover a needs to be sealed with a film to ensure the sealing of the test tube 13. Example 3:

[0026] Reference Figure 6-7As shown, a fixture of the present invention is used to accommodate the test tube caps A described in Example 1. It includes a cylindrical body 14, with test tube cap receiving grooves 15 arranged circumferentially and extending axially along the sidewall of the cylindrical body 14. During use, multiple test tube caps A are loaded into the test tube cap receiving grooves 15 of the cylindrical body 14. The ejector pins on the automatic assembly machine then eject the test tube cap bodies one by one to the top of the fixture, allowing them to be grasped by the robot arm of the automatic assembly machine.

[0027] Preferably, the test tube cap receiving groove 15 is provided with an axially extending slot 16 so that the user can observe the state of the test tube cap in the test tube cap receiving groove 15 during assembly.

[0028] Preferably, a positioning boss 17 is provided at the bottom of the test tube cover receiving groove 15 to position the test tube cover and prevent it from falling from the bottom.

[0029] As mentioned above, this does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to the above-disclosed structures and technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A test tube cover, comprising a hollow test tube cover body (1), characterized in that: The test tube cover body (1) is provided with a plug-type body (2) that is interference-fitted with the test tube mouth, a frustum (3) integrally formed at the bottom of the plug-type body (2), and a flange (4) integrally formed at the top of the plug-type body (2), a through hole (5) is provided at the bottom of the frustum (3), an annular positioning recess (6) is provided on the inner side of the connection between the plug-type body (2) and the flange (4), an annular positioning boss (7) is provided on the outer side of the connection between the plug-type body (2) and the frustum (3), and an annular pressure surface (8) is provided inside the connection, and after the test tube cover bodies (1) are stacked, the annular positioning boss (7) is positioned on the adjacent annular positioning recess (6).

2. The test tube cover according to claim 1, wherein: The inner wall of the frustum (3) is integrally formed with a positioning convex rib (9); after the two test tube cover bodies (1) are stacked, the bottom of the frustum (3) is positioned on the positioning convex rib (9).

3. The test tube cover according to claim 1, wherein: A conical transition surface (10) is provided on the outer side of the connection between the plug-type body (2) and the flange (4).

4. The test tube cover according to claim 1, wherein: A top rod groove (11) is integrally formed on the bottom of the frustum (3).

5. A vacuum blood collection tube, comprising a test tube (13), characterized in that: The test tube mouth of the test tube (13) is provided with a test tube cover (a) according to any one of claims 1 to 4.

6. A tool for accommodating the test tube cap (a) according to any one of claims 1 to 4, characterized in that: It comprises a columnar main body (14), the side wall of which is provided with test tube cover receiving grooves (15) which are arranged circumferentially and pass through axially.

7. The tooling according to claim 6, characterized in that: The test tube cover receiving groove (15) is provided with an axially extending slot (16).

8. The tooling according to claim 6, characterized in that: A positioning boss (17) is provided at the bottom of the test tube cover receiving groove (15).

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