An eight-channel pipetting device with rapid tip change

Abstract

The utility model belongs to eight channel pipette technology field, and disclose a kind of eight channel pipette of quick sample change, including workbench, eight channel pipette body is installed on workbench, the upper surface of workbench is fixedly connected with two slide rails, two sliding blocks are slidably connected on each slide rail, the upper surface of sliding block is fixedly connected with installation box, sample box is detachably connected on installation box, the upper surface of workbench is fixedly connected with pedestal, the outer surface of pedestal is fixedly connected with hydraulic cylinder, the output of hydraulic cylinder is fixedly connected with telescopic link. The cooperation of slide rail, sliding block, installation box, sample box, pedestal, hydraulic cylinder, telescopic link and fixed plate, through three can slide sample box, a plurality of samples are contained in box, target sample is positioned as required, improve sample change speed and work efficiency, switch between different sample boxes through sliding mechanism, reduce the time of positioning and sampling, and machine downtime caused by single-box depletion can be reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of eight-channel pipetting devices, specifically an eight-channel pipetting device for rapid sample changing. Background Technology

[0002] With the technological advancements in life sciences, clinical testing, and drug development, the demand for high-throughput, high-precision, and high-efficiency pipetting operations in experimental settings is becoming increasingly urgent. In molecular biology and cell biology experiments, the number of samples to be processed in a single experiment has increased from dozens to hundreds or even thousands. Traditional single-channel pipetting devices require operation one well at a time, resulting in extremely low efficiency. While eight-channel pipetting devices can improve efficiency by up to eight times through "multi-channel parallel operation," rapid sample change has become a new requirement. Experiments often require the continuous processing of multiple batches of samples, such as "sample group → standard group → blank control group." If the sample change process is cumbersome, it will negate the efficiency advantage of multi-channel parallel operation. Therefore, it is necessary to optimize the sample change design to meet the requirements of continuous high-throughput processing.

[0003] Meanwhile, the single-tube automatic pipetting mechanism with application number CN202122237249.2 includes a first housing, a first motor fixedly connected to the top of the first housing, a first lead screw fixedly connected to the output shaft of the first motor, a lead screw nut threadedly connected to the surface of the first lead screw, a connecting plate fixedly connected to the surface of the lead screw nut, a sliding through hole on the side of the first housing, the connecting plate extending out through the sliding through hole, a second housing inserted into one end of the connecting plate extending out of the first housing, a second motor fixedly connected to the top of the second housing, a second lead screw fixedly connected to the output shaft of the second motor, a moving rod threadedly connected to the surface of the second lead screw, a pulling rod fixedly connected to the bottom of the moving rod, the pulling rod passing through the second housing and inserting a sleeve tube, the top of the sleeve tube being fixedly connected to the bottom of the second housing, an overlapping block slidably inserted into the surface of the second lead screw, an insertion rod fixedly connected to the bottom of the overlapping block, and a sliding cylinder fixedly connected to the bottom of the insertion rod passing through the second housing, the sliding cylinder being movably sleeved on the surface of the sleeve tube.

[0004] However, the following problems were found in the implementation of the relevant technology: The fixed sample box design makes sample changing cumbersome, resulting in significant efficiency loss and long processing time per sample change. If three batches of samples need to be processed consecutively, a large amount of time is wasted, severely negating the efficiency advantage of eight-channel parallel pipetting. Furthermore, as a frequently used component, the sample box requires regular cleaning, leading to high maintenance costs and long equipment downtime.

[0005] Therefore, we propose an eight-channel pipetting device for rapid sample changing. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides an eight-channel pipetting device for rapid sample changing. It features three sliding sample boxes that can be quickly positioned to the target sample as needed, improving sample changing speed and work efficiency. At the same time, the sample boxes can be easily and quickly disassembled, improving the convenience or efficiency of replacement or maintenance, and enhancing the flexibility of sample changing and daily operations.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an eight-channel pipetting device for rapid sample change, comprising a worktable, an eight-channel pipetting device body mounted on the worktable, two slide rails fixedly connected to the upper surface of the worktable, two sliders slidably connected to each slide rail, a mounting box fixedly connected to the upper surface of each slider, a sample box detachably connected to the mounting box, a base fixedly connected to the upper surface of the worktable, a hydraulic cylinder fixedly connected to the outer surface of the base, a telescopic rod fixedly connected to the output end of the hydraulic cylinder, a fixing plate fixedly connected to the other end of the telescopic rod, the fixing plate fixedly connected to the mounting box, a slot provided on the side of the sample box, several mounting plates fixedly connected to the mounting box, a spring fixedly connected to the outer surface of the mounting plate, and a locking block fixedly connected to the other end of the spring.

[0008] Preferably, the card block is movably connected to the card slot.

[0009] Preferably, a protective cover is fixedly connected to the worktable, and the three sample boxes are located inside the protective cover.

[0010] Preferably, the mounting box is provided with a plurality of sliding grooves, and a sliding plate is fixedly connected to the outer surface of the sample box.

[0011] Preferably, the slide plate is slidably connected to the slide groove.

[0012] Preferably, an elastic column is fixedly connected to the outer surface of the mounting plate, and the other end of the elastic column is fixedly connected to the locking block.

[0013] Preferably, limit plates are fixedly connected to both ends of the slide rail, and the limit plates are fixedly connected to the worktable.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model utilizes the cooperation of slide rails, sliders, mounting boxes, sample boxes, bases, hydraulic cylinders, telescopic rods, and fixing plates. Through three sliding sample boxes, each containing several samples, the system can quickly locate the target sample as needed, improving sample changing speed and work efficiency. The sliding mechanism allows switching between different sample boxes, reducing positioning and sampling time, and minimizing downtime caused by a single box running out. This increases the sample processing capacity per unit time, enhancing flexibility and sample management.

[0015] 2. This utility model, through the cooperation of the mounting box, sample box, slot, mounting plate, spring and locking block, allows for convenient and quick disassembly of the sample box. The sample box can be removed separately without affecting the alignment of the main unit, facilitating the cleaning and disinfection of the box cavity, holes, sealing gaskets and other components. This reduces the workload of disassembling the entire machine. In case of errors or contamination, only the relevant box needs to be dealt with, reducing interference with other channels and downtime. This improves the convenience or efficiency of replacement or maintenance, and enhances the flexibility of sample changing and daily operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the slide rail connection structure of this utility model; Figure 3 This is a schematic diagram of the mounting box connection structure of this utility model; Figure 4 This is a schematic diagram of the card block connection structure of this utility model; Figure 5 This is a schematic diagram of the sample box connection structure of this utility model.

[0017] In the diagram: 1. Workbench; 2. Eight-channel pipette body; 3. Slide rail; 4. Slider; 5. Mounting box; 6. Sample box; 7. Base; 8. Hydraulic cylinder; 9. Telescopic rod; 10. Fixing plate; 11. Slot; 12. Mounting plate; 13. Spring; 14. Locking block; 15. Slide groove; 16. Slide plate; 17. Elastic column; 18. Protective cover. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1 to 5As shown, this utility model provides an eight-channel pipetting device for rapid sample changing, including a worktable 1, an eight-channel pipetting device body 2 mounted on the worktable 1, two slide rails 3 fixedly connected to the upper surface of the worktable 1, two sliders 4 slidably connected to each slide rail 3, a mounting box 5 fixedly connected to the upper surface of the sliders 4, a sample box 6 detachably connected to the mounting box 5, a base 7 fixedly connected to the upper surface of the worktable 1, a hydraulic cylinder 8 fixedly connected to the outer surface of the base 7, a telescopic rod 9 fixedly connected to the output end of the hydraulic cylinder 8, a fixing plate 10 fixedly connected to the other end of the telescopic rod 9, the fixing plate 10 fixedly connected to the mounting box 5, a slot 11 provided on the side of the sample box 6, several mounting plates 12 fixedly connected to the mounting box 5, a spring 13 fixedly connected to the outer surface of the mounting plate 12, and a locking block 14 fixedly connected to the other end of the spring 13.

[0020] Specifically, card block 14 is movably connected to card slot 11.

[0021] Furthermore, a protective cover 18 is fixedly connected to the workbench 1, and three sample boxes 6 are located inside the protective cover 18 to protect the unused sample boxes 6.

[0022] Furthermore, the mounting box 5 is provided with several sliding grooves 15, and the outer surface of the sample box 6 is fixedly connected with a sliding plate 16.

[0023] It is worth noting that the slide plate 16 and the slide groove 15 are slidably connected, so that the sample box 6 can be positioned and installed on the mounting box 5 by the slide plate 16 and the slide groove 15.

[0024] It is worth noting that an elastic post 17 is fixedly connected to the outer surface of the mounting plate 12, and the other end of the elastic post 17 is fixedly connected to the locking block 14 to prevent the spring 13 from tilting and to ensure that the locking block 14 moves linearly.

[0025] It is worth mentioning that the two ends of the slide rail 3 are fixedly connected to limit plates, which are fixedly connected to the worktable 1 to limit the sliding range of the slider 4.

[0026] The eight-channel pipetting device body 2, sample box 6, and hydraulic cylinder 8 are existing technologies and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switch, which are not the main technical points of this patent and will not be described in detail. The device's "front, back, left, and right" perspectives are... Figure 1 The direction shown in the diagram is the reference.

[0027] Working principle: First, different samples are placed on three sample boxes 6 respectively. Then, during use, the samples on the three sample boxes 6 are pipetted through the eight-channel pipetting device body 2. If it is necessary to pipet the sample on the leftmost sample box 6, the hydraulic cylinder 8 on the base 7 drives the telescopic rod 9. The telescopic rod 9 retracts and drives the fixing plate 10. The fixing plate 10 drives the mounting box 5 to move. The mounting box 5 moves on the slide rail 3 through the slider 4, thereby moving the leftmost sample box 6 to below the eight-channel pipetting device body 2. Similarly, the rightmost sample box 6 is moved in the opposite direction using the same method. The unused sample box 6 is protected by the protective cover 18 to prevent impurities from entering. The sample box 6 can be removed by force. Then, the new sample box 6 is positioned and installed on the mounting box 5 through the slide plate 16 and the slide groove 15. The spring 13 on the mounting plate 12 applies elastic force to the locking block 14, and then the locking block 14 engages in the locking groove 11 to fix the position of the sample box 6.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An eight-channel pipette with rapid sample change, comprising a worktable (1), characterized in that: The workbench (1) is equipped with an eight-channel pipetting device body (2). Two slide rails (3) are fixedly connected to the upper surface of the workbench (1). Two sliders (4) are slidably connected to each slide rail (3). A mounting box (5) is fixedly connected to the upper surface of the slider (4). A sample box (6) is detachably connected to the mounting box (5). A base (7) is fixedly connected to the upper surface of the workbench (1). A hydraulic cylinder (8) is fixedly connected to the outer surface of the base (7). A telescopic rod (9) is fixedly connected to the output end of the hydraulic cylinder (8). A fixing plate (10) is fixedly connected to the other end of the telescopic rod (9). The fixing plate (10) is fixedly connected to the mounting box (5). A slot (11) is provided on the side of the sample box (6). Several mounting plates (12) are fixedly connected to the mounting box (5). A spring (13) is fixedly connected to the outer surface of the mounting plate (12). A locking block (14) is fixedly connected to the other end of the spring (13).

2. The eight-channel pipette with rapid sample changing according to claim 1, characterized in that: The card block (14) is movably connected to the card slot (11).

3. The eight-channel pipette with rapid sample changing according to claim 1, characterized in that: A protective cover (18) is fixedly connected to the workbench (1), and the three sample boxes (6) are located inside the protective cover (18).

4. The eight-channel pipette with rapid sample changing according to claim 1, characterized in that: The mounting box (5) is provided with several sliding grooves (15), and the outer surface of the sample box (6) is fixedly connected with a sliding plate (16).

5. The eight-channel pipette with rapid sample changing according to claim 4, characterized in that: The slide plate (16) is slidably connected to the slide groove (15).

6. The eight-channel pipette with rapid sample changing according to claim 1, characterized in that: An elastic column (17) is fixedly connected to the outer surface of the mounting plate (12), and the other end of the elastic column (17) is fixedly connected to the locking block (14).

7. The eight-channel pipette with rapid sample changing according to claim 1, characterized in that: Limiting plates are fixedly connected to both ends of the slide rail (3), and the limiting plates are fixedly connected to the worktable (1).

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