Positioning structure for pipetting head of pipetting workstation

Abstract

The utility model relates to a pipetting workstation pipetting head positioning structure, which comprises a positioning seat, a fixed block and a movable pressing block, the fixed block and the movable pressing block are respectively arranged on two sides above the positioning seat, the movable pressing block is fixed on the positioning seat through a rotating shaft, and a spring is arranged between the positioning seat and the movable pressing block. The device is simple in structure, reasonable in design and convenient to use, the U-shaped clamping groove in one side of the pipetting fixing plate abuts against the clamping groove of the fixing block, the edge of the U-shaped clamping groove in the other side of the pipetting fixing plate is pressed through the movable pressing block, and therefore the pipetting fixing plate can be rapidly disassembled, assembled and replaced efficiently and conveniently.

Description

Technical Field

[0001] The utility model relates to a positioning structure for pipette tips of a pipetting workstation. Background Art

[0002] A pipetting workstation is a device for liquid handling, featuring high automation, high precision, high compatibility, high cost performance, high throughput, etc. It can perform functions such as continuous gradient dilution, liquid dispensing, addition, combination, and continuous gradient dilution between microplates, and is widely used in genomics research such as nucleic acid extraction, construction of various biological laboratory systems, large-scale sequencing, and large-scale pipetting processes such as drug screening and protein analysis. During the pipetting process, the pipette needs to be replaced with different pipette tips to avoid cross-contamination of reagents when pipetting different liquid medicines. In the prior art, multiple pipette tips are usually fixed on a pipette tip plate. After all the pipette tips on one pipette tip plate are used up, a new pipette tip plate with pipette tips is directly replaced. To solve the problem of quick replacement of the pipette tip plate, this case is thus born. Content of the Utility Model

[0003] The utility model improves the above problems, that is, the technical problem to be solved by the utility model is to provide a positioning structure for pipette tips of a pipetting workstation, which is simple in structure and convenient to use.

[0004] The utility model is composed of a positioning seat, a fixed block and a movable pressing block respectively arranged on both sides above the positioning seat. The movable pressing block is fixed on the positioning seat through a rotating shaft, and a spring is arranged between the positioning seat and the movable pressing block.

[0005] Further, a fixed column is arranged behind the fixed block, and a column cap is arranged above the fixed column.

[0006] Further, a clamping groove is arranged inside the fixed block.

[0007] Further, the upper part of the positioning seat is open, and a cavity is arranged in the middle of the positioning seat.

[0008] Further, an installation groove for installing the movable pressing block is arranged on one side of the positioning seat.

[0009] Further, a pipetting fixing plate is installed on the surface of the positioning seat. A plurality of through holes for placing pipette tips are arranged on the pipetting fixing plate. U-shaped clamping grooves are arranged on both sides of the pipetting fixing plate. One of the U-shaped clamping grooves cooperates with the fixed block on one side of the positioning seat, and the other U-shaped clamping groove cooperates with the movable pressing block on the other side of the positioning seat.

[0010] Further, a semi-circular groove is also arranged on one side of the pipetting fixing plate, and the semi-circular groove abuts against the fixed column of the positioning seat.

[0011] Compared with the prior art, the utility model has the following beneficial effects: The device has a simple structure, reasonable design, and is convenient and efficient to use. When all the liquid suction tubes on the old liquid transfer fixing plate are used up, by aligning and abutting the card slot on the left side of the new liquid transfer fixing plate with multiple liquid suction tubes with the fixing block on the left side of the positioning seat, and at the same time, the semi-circular groove on the left side of the liquid transfer fixing plate also abuts against the fixing column, press the lower part of the movable pressing block, so that the upper part of the movable pressing block rotates counterclockwise to the right along the rotating shaft, and the pressing part of the movable pressing block leaves the surface of the positioning seat. Then swing the right side of the liquid transfer fixing plate downward to contact the right side surface of the positioning seat, release the movable pressing block, and the movable pressing block presses the edge part located in the U-shaped card slot on the right side of the liquid transfer fixing plate, thereby limiting the liquid transfer fixing plate to facilitate the subsequent insertion of the washing liquid gun directly into the liquid suction tube on the liquid transfer fixing plate for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of an embodiment of the utility model;

[0013] Figure 2 It is a structural schematic diagram of an embodiment of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the liquid transfer fixing plate of an embodiment of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0016] Embodiment: As shown in the Figures 1-3 drawings, in this embodiment, a liquid suction head positioning structure for a liquid transfer workstation is provided, including a positioning seat 1, and a fixing block 2 and a movable pressing block 3 respectively arranged on both sides above the positioning seat. The movable pressing block is fixed on the positioning seat through a rotating shaft 4, and a spring 5 is arranged between the positioning seat and the movable pressing block.

[0017] The pressing part 31 of the above-mentioned movable pressing block extends above the inner cavity of the positioning seat, and under the elastic force of the spring, the pressing part always maintains a downward pressing state.

[0018] In the embodiment of the present utility model, a card slot 21 is arranged inside the fixing block, and the cross-section of the card slot can be arc-shaped; the cross-section of the above-mentioned movable pressing block is hook-shaped, and the contact surface of the pressing part with the liquid transfer fixing plate can be a plane.

[0019] In the embodiment of the present utility model, a fixing column 6 is arranged behind the fixing block, and a column cap 61 is arranged above the fixing column.

[0020] In the embodiment of the present utility model, the upper part of the positioning seat is open, and a cavity 11 is arranged in the middle of the positioning seat.

[0021] In an embodiment of the present utility model, an installation groove 12 for installing a movable pressing block is provided on one side of the positioning seat; a rotating shaft and a spring are arranged in the installation groove.

[0022] In an embodiment of the present utility model, a pipetting fixing plate 7 is installed on the surface of the positioning seat. A plurality of through holes 71 for placing pipette tubes 72 are formed in the pipetting fixing plate. U-shaped clamping grooves 73 are provided on both sides of the pipetting fixing plate. One of the U-shaped clamping grooves cooperates with a fixed block on one side of the positioning seat, and the other U-shaped clamping groove cooperates with a movable pressing block on the other side of the positioning seat.

[0023] In an embodiment of the present utility model, a semi-circular groove 74 is further formed on one side of the pipetting fixing plate, and the semi-circular groove abuts against a fixed column of the positioning seat.

[0024] Vertical plates 75 are arranged on the front and rear sides of the surface of the above-mentioned pipetting fixing plate.

[0025] In an embodiment of the present utility model, during operation: Align and abut the clamping groove on the left side of the pipetting fixing plate with multiple pipette tubes against the fixed block on the left side of the positioning seat. At the same time, the semi-circular groove on the left side of the pipetting fixing plate also abuts against the fixed column. Press the lower part of the movable pressing block, so that the upper part of the movable pressing block rotates counterclockwise to the right along the rotating shaft, and the pressing part of the movable pressing block leaves the surface of the positioning seat. Then swing the right side of the pipetting fixing plate downward to contact the surface on the right side of the positioning seat. Release the movable pressing block, and the movable pressing block presses the edge part located in the U-shaped clamping groove on the right side of the pipetting fixing plate, thereby limiting the pipetting fixing plate to facilitate the subsequent direct insertion of a washing liquid gun into the pipette tube on the pipetting fixing plate for use.

[0026] For any of the technical solutions disclosed in the above-mentioned present utility model, unless otherwise stated, if it discloses a numerical range, the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is only the numerical values with obvious technical effects or representativeness among many feasible numerical values. Since there are too many numerical values to list exhaustively, the present utility model only discloses some numerical values to illustrate the technical solutions of the present utility model. Moreover, the above-listed numerical values should not constitute a limitation on the protection scope of the present utility model.

[0027] If terms such as "first" and "second" are used in this article to limit components, those skilled in the art should know that the use of "first" and "second" is only for facilitating the description and distinguishing of components. Unless otherwise stated, the above terms have no special meanings.

[0028] Meanwhile, if the above-mentioned utility model of the present disclosure or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or it can also be understood as: a non-detachable fixed connection (e.g., riveting, welding). Of course, the mutually fixed connection can also be replaced by an integral structure (e.g., manufactured by integral forming using casting technology) (except where it is clearly impossible to use the integral forming process).

[0029] In addition, in any of the technical solutions disclosed by the above-mentioned utility model of the present disclosure, the terms used to represent the positional relationship or shape, unless otherwise stated, include states or shapes that are approximate, similar, or close to it.

[0030] Any component provided by the present utility model can either be assembled from multiple separate components or be a single component manufactured by an integral forming process.

[0031] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit it; although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present utility model or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present utility model, they should all be covered within the scope of the technical solutions claimed by the present utility model.

Claims

1. A pipetting workstation pipette tip positioning structure, characterized in that, It includes a positioning seat, a fixed block and a movable pressing block respectively arranged on both sides above the positioning seat. The movable pressing block is fixed to the positioning seat via a rotating shaft, and a spring is arranged between the positioning seat and the movable pressing block.

2. The pipetting workstation pipette tip positioning structure according to claim 1, wherein, A clamping groove is arranged inside the fixed block.

3. The pipetting workstation liquid suction head positioning structure according to claim 1, characterized in that, A fixed column is arranged behind the fixed block, and a column cap is arranged above the fixed column.

4. The pipetting workstation liquid suction head positioning structure according to claim 1, characterized in that, The upper part of the positioning seat is open, and a cavity is arranged in the middle of the positioning seat.

5. The pipetting workstation liquid suction head positioning structure according to claim 1, characterized in that, An installation groove for installing the movable pressing block is arranged on one side of the positioning seat.

6. The pipetting workstation pipette tip positioning structure according to claim 1, characterized in that, A pipetting fixing plate is installed on the surface of the positioning seat. A plurality of through holes for placing pipettes are arranged on the pipetting fixing plate. U-shaped clamping grooves are arranged on both sides of the pipetting fixing plate. One of the U-shaped clamping grooves cooperates with the fixed block on one side of the positioning seat, and the other U-shaped clamping groove cooperates with the movable pressing block on the other side of the positioning seat.

7. The pipetting workstation liquid suction head positioning structure according to claim 6, wherein A semi-circular groove is also arranged on one side of the pipetting fixing plate, and the semi-circular groove abuts against the fixed column of the positioning seat.

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