Sample tube carrier structure for pipetting workstation

Abstract

The utility model belongs to the technical field of pipetting work stations, and discloses a sample tube carrier structure for a pipetting work station. The sample tube carrier structure for the pipetting workstation is arranged on a base of the pipetting workstation and comprises a mounting plate and a bracket, the mounting plate is arranged on the machine base, the support is arranged on the mounting plate, a plurality of penetrating holes are formed in the top of the support, and a containing space is formed in the support. A conical positioning hole is formed in an inlet of the penetrating hole, the axis of the conical positioning hole is perpendicular to the upper surface of the support, the outer edge of the bottom of a screw cap of a sample tube is in lap joint with the inner surface of the conical positioning hole, the perpendicularity of the sample tube can be guaranteed, the penetrating hole is in sliding connection with the sample tube, and the guiding and positioning effects on placement of the sample tube are achieved. And the positioning precision of the sample tube is improved, so that the grabbing and positioning failure rate of the moving mechanism for grabbing the sample tube is low. The outer edge of the bottom of the screw cap is located in the middle of the inner surface of the conical positioning hole in the axis direction, and the grabbing positioning failure rate is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid transfer workstations, in particular to a sample tube carrier structure for liquid transfer workstations. Background Art

[0002] The pipetting workstation is an automated liquid handling platform system that can automatically complete high-precision liquid handling tasks such as gradient dilution, pipetting, and merging liquids. The pipetting workstation includes a moving mechanism and a sample tube carrier structure. The moving mechanism can be used to move and place the sample tube on the sample tube carrier structure, or to grab and remove the sample tube from the sample tube carrier structure.

[0003] The existing sample tube carrier structure includes a placement plate, a through hole is provided on the placement plate, and the sample tube includes a tube body and a screw cap. The sample tube is installed on the placement plate through the through hole, and the bottom of the screw cap overlaps the upper surface of the placement plate. However, due to the influence of factors such as the surface flatness of the placement plate, the sample tube will be tilted along the axis direction of the through hole, and the positioning accuracy of the sample tube cannot be guaranteed, resulting in a high grasping and positioning failure rate when the moving mechanism positions and grasps the sample tube. Utility Model Content

[0004] The utility model aims to provide a sample tube carrier structure for a liquid transfer workstation, which has high positioning accuracy for the sample tube and reduces the grasping and positioning failure rate when a mobile mechanism positions and grasps the sample tube.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A sample tube carrier structure for a liquid transfer workstation is arranged on a base of the liquid transfer workstation, comprising:

[0007] A mounting plate, arranged on the base;

[0008] A bracket is arranged on the mounting plate, a plurality of through holes are arranged on the top of the bracket, a receiving space is arranged inside the bracket, the through holes are communicated with the receiving space, the through holes are used to pass sample tubes, and the through holes are slidably connected with the sample tubes; the receiving space is used to receive the sample tubes; a conical positioning hole is arranged at the entrance of the through holes, the axis of the conical positioning hole is perpendicular to the upper surface of the bracket, the outer edge of the bottom of the screw cap of the sample tube overlaps the inner surface of the conical positioning hole, and is located at the middle position along the axis direction on the inner surface of the conical positioning hole.

[0009] Preferably, the bracket includes a support member and a positioning plate, the support member is arranged on the mounting plate, the positioning plate is arranged on the support member, the through hole is arranged on the positioning plate, and the accommodating space is located between the positioning plate and the mounting plate.

[0010] Preferably, the supporting member is a pillar, and a plurality of the pillars are arranged on the mounting plate.

[0011] Preferably, the bracket further comprises a base plate, the lower end of the support is connected to the base plate, the mounting plate is provided with a plug-in slot, and the base plate is plugged into the plug-in slot.

[0012] Preferably, avoidance grooves are provided on the four top corners of the plug-in slot for avoiding the four top corners of the bottom plate.

[0013] Preferably, a protrusion is provided at the upper end of the pillar, the positioning plate passes through the protrusion and overlaps the pillar; an external thread is provided at the lower end of the pillar, a threaded hole is correspondingly provided on the bottom plate, and the external thread is threadedly connected to the threaded hole.

[0014] Preferably, two operating grooves are provided on the outer wall of the pillar, and the operating grooves facilitate the installation of the pillar.

[0015] Preferably, the support member is a side plate, which is circumferentially arranged around the bottom of the positioning plate and is integrally formed with the positioning plate. The mounting plate is provided with a snap-in groove, and the side plate is snap-fitted into the snap-in groove.

[0016] Preferably, a plurality of the through holes are arranged on the bracket at equal intervals.

[0017] Preferably, the mounting plate is detachably connected to the base.

[0018] Beneficial effects of the utility model:

[0019] The sample tube carrier structure for a liquid transfer workstation provided by the utility model is arranged on the machine base of the liquid transfer workstation. A conical positioning hole is arranged at the entrance of the through hole, and the axis of the conical positioning hole is perpendicular to the upper surface of the positioning plate. The outer edge of the bottom of the screw cap of the sample tube is overlapped on the inner surface of the conical positioning hole, so as to ensure the verticality of the sample tube, and the through hole is slidably connected with the sample tube, which plays a guiding and positioning role in the placement of the sample tube, thereby improving the positioning accuracy of the sample tube, so that the mobile mechanism reduces the grasping and positioning failure rate when positioning and grasping the sample tube. The conical positioning hole is designed according to the diameter of the screw cap of the sample tube, and the outer edge of the bottom of the screw cap can be located at the middle position along the axis direction on the inner surface of the conical positioning hole, so as to prevent the mobile mechanism from being tilted when placing the sample tube, that is, a part of the bottom of the screw cap abuts against the conical positioning hole, and a part is suspended, or the part of the screw cap protruding from the upper surface of the positioning plate is small, which is not conducive to the grasping of the mobile mechanism, and further reduces the grasping and positioning failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is an axonometric diagram of the sample tube carrier structure for the liquid transfer workstation provided by the utility model;

[0021] Figure 2 It is a top view of the sample tube carrier structure for the liquid transfer workstation provided by the utility model;

[0022] Figure 3 It is a cross-sectional view of the sample tube carrier structure for the liquid transfer workstation provided by the utility model.

[0023] In the figure:

[0024] 1. Mounting plate; 11. Plug slot; 12. Avoidance slot;

[0025] 2. Bracket; 21. Through hole; 22. Accommodation space; 23. Conical positioning hole; 24. Support member; 25. Positioning plate; 26. Bottom plate; 27. Operation slot;

[0026] 100. Sample tube; 101. Screw cap. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] like Figures 1 to 3 As shown, the utility model provides a sample tube carrier structure for a pipetting workstation, which is arranged on a machine base of the pipetting workstation, and includes a mounting plate 1 and a bracket 2, wherein the mounting plate 1 is arranged on the machine base; the bracket 2 is arranged on the mounting plate 1, and a plurality of through holes 21 are arranged on the top of the bracket 2, and a receiving space 22 is arranged inside the bracket 2, wherein the through holes 21 are communicated with the receiving space 22, the through holes 21 are used to pass the sample tube 100, and the through holes 21 are slidably connected with the sample tube 100; the receiving space 22 is used to receive the sample tube 100; a conical positioning hole 23 is arranged at the entrance of the through hole 21, and the axis of the conical positioning hole 23 is perpendicular to the upper surface of the bracket 2, and the outer edge of the bottom of the screw cap 101 of the sample tube 100 overlaps the inner surface of the conical positioning hole 23, and is located at the middle position along the axis direction on the inner surface of the conical positioning hole 23.

[0032] A conical positioning hole 23 is provided at the entrance of the penetration hole 21, and the axis of the conical positioning hole 23 is perpendicular to the upper surface of the bracket 2. The outer edge of the bottom of the screw cap 101 of the sample tube 100 is overlapped on the inner surface of the conical positioning hole 23, which ensures the verticality of the sample tube 100. The penetration hole 21 is slidably connected with the sample tube 100, which plays a guiding and positioning role in the placement of the sample tube 100, thereby improving the positioning accuracy of the sample tube 100 and reducing the grasping and positioning failure rate when the moving mechanism locates and grasps the sample tube 100. When the outer edge of the bottom of the screw cap 101 of the sample tube 100 is overlapped on the upper end position along the axis direction of the inner surface of the conical positioning hole 23, the moving mechanism may be tilted when placing the sample tube 100, that is, a part of the bottom of the screw cap 101 abuts against the conical positioning hole 23, and a part is suspended. The outer edge of the bottom of the screw cap 101 of the sample tube 100 is overlapped on the lower end position along the axial direction of the inner surface of the conical positioning hole 23. The portion of the screw cap 101 protruding from the upper surface of the positioning plate 25 is small, which is not conducive to the grasping of the moving mechanism. The sample tube carrier structure for the pipetting workstation provided in this embodiment designs the conical positioning hole 23 according to the diameter of the screw cap 101 of the sample tube 100, and the outer edge of the bottom of the screw cap 101 can be located at the middle position along the axial direction on the inner surface of the conical positioning hole 23, further reducing the grasping and positioning failure rate. When designing the conical positioning hole 23, parameters such as the size of the cone angle of the conical positioning hole 23 and the depth of the conical positioning hole 23 should be considered to ensure that the outer edge of the bottom of the screw cap 101 is located at the middle position along the axial direction on the inner surface of the conical positioning hole 23.

[0033] Optionally, in this embodiment, a plurality of through holes 21 are arranged at equal intervals on the bracket 2 for easy processing. In other embodiments, a plurality of through holes 21 may also be arranged at non-equal intervals on the bracket 2. Optionally, in this embodiment, the mounting plate 1 is detachably connected to the base for easy replacement.

[0034] Optionally, the support 2 includes a support member 24 and a positioning plate 25, the support member 24 is arranged on the mounting plate 1, the positioning plate 25 is arranged on the support member 24, the through hole 21 is arranged on the positioning plate 25, and the accommodating space 22 is located between the positioning plate 25 and the mounting plate 1. The structure is simple, and the accommodating space 22 required for the sample tube 100 is provided.

[0035] Optionally, the support member 24 is a pillar, and a plurality of pillars are arranged on the mounting plate 1, which has a simple structure and saves costs. Further, in the present embodiment, eight pillars are arranged circumferentially along the positioning plate 25, thereby ensuring the support stability of the positioning plate 25. Optionally, in the present embodiment, the bracket 2 also includes a base plate 26, the lower end of the pillar is connected to the base plate 26, and a plug-in slot 11 is provided on the mounting plate 1, and the base plate 26 is plugged into the plug-in slot 11. During installation, the bracket 2 is plugged into the plug-in slot 11 of the mounting plate 1 through the base plate 26, which is convenient for installation. Further, in the present embodiment, avoidance slots 12 are provided on the four top corners of the plug-in slot 11, which are used to avoid the four top corners of the base plate 26. When disassembling the bracket 2, it can be disassembled through the avoidance slots 12 at the four top corners, which is convenient for disassembly.

[0036] Optionally, in this embodiment, the upper end of the pillar is provided with a protrusion, and the positioning plate 25 is provided with the protrusion and overlapped on the pillar; the lower end of the pillar is provided with an external thread, and the bottom plate 26 is provided with a corresponding threaded hole, and the external thread is threadedly connected with the threaded hole. During installation, the external thread at the lower end of the pillar is firstly threadedly connected with the threaded hole on the bottom plate 26, and then the positioning plate 25 is provided with a protrusion and overlapped on the pillar, and the installation is firm. In other embodiments, the two ends of the pillar are respectively connected to the positioning plate 25 and the bottom plate 26 by welding or bonding, etc., which is not limited to this embodiment. In order to facilitate the installation of the pillar, optionally, in this embodiment, two operating grooves 27 are provided on the outer wall of the pillar, and the operating grooves 27 facilitate the installation of the pillar. Specifically, the lower end of the pillar is screwed into or out of the threaded hole of the bottom plate 26 by hand through the two operating grooves 27. In other embodiments, two protrusions can be provided on the pillar, and the two protrusions assist the hand to screw the pillar into or out of the threaded hole, which is not limited to this embodiment.

[0037] Optionally, in other embodiments, the support member 24 is a side plate, which is circumferentially arranged at the bottom of the positioning plate 25 and is integrally formed with the positioning plate 25. The mounting plate 1 is provided with a snap-fit ​​groove, and the side plate is snap-fitted into the snap-fit ​​groove. The structure is simple and easy to install, and it only needs to provide the accommodation space 22 required for the sample tube 100, and is not limited to this embodiment.

[0038] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A sample tube carrier structure for a liquid transfer workstation, arranged on a base of the liquid transfer workstation, characterized in that: include: A mounting plate (1) is arranged on the machine base; A bracket (2) is arranged on the mounting plate (1), a plurality of through holes (21) are arranged on the top of the bracket (2), a receiving space (22) is arranged inside the bracket (2), the through holes (21) are communicated with the receiving space (22), the through holes (21) are used to pass a sample tube (100), and the through holes (21) are slidably connected to the sample tube (100); the receiving space (22) is used to receive the sample tube (100); a conical positioning hole (23) is arranged at the entrance of the through hole (21), the axis of the conical positioning hole (23) is perpendicular to the upper surface of the bracket (2), the outer edge of the bottom of the screw cap (101) of the sample tube (100) overlaps the inner surface of the conical positioning hole (23), and is located at the middle position of the inner surface of the conical positioning hole (23) along the axis direction.

2. The sample tube carrier structure for a pipetting workstation according to claim 1, characterized in that: The bracket (2) comprises a support member (24) and a positioning plate (25), wherein the support member (24) is arranged on the mounting plate (1), the positioning plate (25) is arranged on the support member (24), the through hole (21) is arranged on the positioning plate (25), and the accommodating space (22) is located between the positioning plate (25) and the mounting plate (1).

3. The sample tube carrier structure for a pipetting workstation according to claim 2, characterized in that: The support member (24) is a pillar, and a plurality of the pillars are arranged on the mounting plate (1).

4. The sample tube carrier structure for a liquid handling workstation according to claim 3, characterized in that: The bracket (2) further comprises a bottom plate (26), the lower end of the support column being connected to the bottom plate (26), the mounting plate (1) being provided with a plug-in slot (11), and the bottom plate (26) being plugged into the plug-in slot (11).

5. The sample tube carrier structure for a liquid handling workstation according to claim 4, characterized in that: Avoidance grooves (12) are provided at the four top corners of the plug-in groove (11) for avoiding the four top corners of the bottom plate (26).

6. The sample tube carrier structure for a liquid handling workstation according to claim 4, characterized in that: The upper end of the pillar is provided with a protrusion, and the positioning plate (25) passes through the protrusion and overlaps the pillar; the lower end of the pillar is provided with an external thread, and the bottom plate (26) is correspondingly provided with a threaded hole, and the external thread is threadedly connected with the threaded hole.

7. The sample tube carrier structure for a liquid handling workstation according to claim 6, characterized in that: Two operating grooves (27) are provided on the outer wall of the pillar, and the operating grooves (27) facilitate the installation of the pillar.

8. The sample tube carrier structure for a liquid handling workstation according to claim 2, characterized in that: The support member (24) is a side plate, which is circumferentially arranged at the bottom of the positioning plate (25) and is integrally formed with the positioning plate (25). The mounting plate (1) is provided with a clamping groove, and the side plate is clamped in the clamping groove.

9. The sample tube carrier structure for a liquid handling workstation according to any one of claims 1 to 8, characterized in that: The plurality of penetration holes (21) are arranged at equal intervals on the bracket (2).

10. The sample tube carrier structure for a liquid handling workstation according to any one of claims 1 to 8, characterized in that: The mounting plate (1) is detachably connected to the machine base.

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