An eight-channel pipetting assembly with easy tip attachment and detachment

Abstract

The utility model belongs to eight channel pipette assembly technical field, and disclose a kind of eight channel pipette assembly of tip convenient to assemble and disassemble, including eight channel pipette assembly body, eight channel pipette assembly body is installed with mounting seat, and mounting seat is detachably connected with tip, slot is provided in mounting seat, the inner surface of slot is fixedly connected with mounting plate, the outer surface of mounting plate is fixedly connected with spring, the end of spring away from mounting plate is fixedly connected with elastic block, the outer surface of tip is fixedly connected with fixed cone block, and the outer surface of tip is slidably connected with sliding cone block. Through the cooperation of mounting seat, tip, slot, mounting plate, spring, elastic block, fixed cone block and sliding cone block, self-locking can be completed when insertion depth reaches preset position, and release is completed by pushing again, locking and releasing can be achieved by simply pushing during operation, the quick, misalignment-free, low-wear, repeatable disassembly of tip is realized, to form self-locking and quick release mechanism.

Description

TECHNICAL FIELD

[0001] The utility model belongs to eight channel pipette assembly technical field, specifically a kind of eight channel pipette assembly of tip convenient to assemble and disassemble. BACKGROUND

[0002] Laboratory automation and production line amplification trend promote multi-channel (such as eight channels) pipette system to become standard configuration, to improve throughput, reduce unit sample cost, biological, chemical, analytical detection and other fields to improve repeatability and traceability requirement, uniform tip assembly and disassembly process helps to reduce variation source, eight channel pipette assembly belongs to precision instrument, use and store are all careful, prevent damage, avoid affecting its range, when using, tip needs to be frequently replaced, but the current equipment is not very convenient when replacing gun head.

[0003] Meanwhile, the application number for CN201820633891.8 is a kind of eight channel pipette gun head mounting assembly, including plug-in board, conical tube, connecting pipe, sleeve pipe, fixed pipe and plug-in head, plug-in board is internally provided with plug-in pipe, and plug-in pipe is internally inserted with plug-in assembly at lower end, plug-in assembly is provided with pipette plug-in head inside plug-in pipe, and pipette plug-in head is externally sleeved with pipette rubber ring, pipette plug-in head is installed with pipette connector at lower end, and pipette connector is welded with pipette at lower end, plug-in board is installed with conical tube at upper end, and conical tube is connected with sleeve pipe through connecting pipe, sleeve pipe is internally inserted with plug-in head, plug-in head is externally sleeved with plug-in head rubber ring, plug-in head is installed with fixed pipe at upper end, and sleeve pipe and fixed pipe are connected outside through buckle, one end of buckle near fixed pipe is installed with shaft fixing part, and shaft fixing part is installed with rotating shaft sleeve outside, rotating shaft sleeve is internally inserted with rotating shaft, rotating shaft is welded with rotating plate at lower end, rotating plate is installed with moving buckle at lower end on one side near sleeve pipe, rotating shaft is installed with handle at upper end, handle is connected with fixed pipe inside through rebound spring, handle is installed with anti-skid rubber point outside.

[0004] However, in the implementation of the related technology, the above problems are found: but its speed of assembly and disassembly is slow, significantly affects the throughput of overall experiment or production process, and cannot automatically complete self-locking and releasing operation, so that the assembly and disassembly process cannot realize full automation, and manual intervention is still needed to complete certain releasing or resetting action, which reduces the degree of automation of the system and increases labor intensity and human error risk.

[0005] Therefore, we propose a kind of eight channel pipette assembly of tip convenient to assemble and disassemble. Utility model content

[0006] To address the problems mentioned in the background art, this utility model provides an eight-channel pipetting assembly that facilitates the installation and removal of pipette tips. It has the advantages of automated and rapid installation and removal through the movement mechanism of the eight-channel pipetting assembly itself, and locking and releasing with just a simple push.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an eight-channel pipetting assembly that facilitates tip loading and unloading, comprising an eight-channel pipetting assembly body, a mounting base mounted on the eight-channel pipetting assembly body, a pipetting tip detachably connected to the mounting base, a slot provided in the mounting base, a mounting plate fixedly connected to the inner surface of the slot, a spring fixedly connected to the outer surface of the mounting plate, a spring block fixedly connected to the end of the spring away from the mounting plate, a fixing cone block fixedly connected to the outer surface of the pipetting tip, a sliding cone block slidably connected to the outer surface of the pipetting tip, a fixing block fixedly connected to the outer surface of the pipetting tip, and a limit plate fixedly connected to the lower surface of the fixing block.

[0008] Preferably, the sliding cone is located below the fixed cone, and the fixed block is located below the sliding cone.

[0009] Preferably, the sliding cone block is movably connected to the fixed cone block, and the sliding cone block is movably connected to the fixed block.

[0010] Preferably, one side of the spring block is inclined.

[0011] Preferably, a sealing ring is fixedly connected to the upper surface of the suction head.

[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 a spring block.

[0013] Preferably, the mounting base is provided with a flow port, the suction head is movably connected to the flow port, and the size of the suction head and the flow port are equal.

[0014] Preferably, the limiting plate is movably connected to the mounting base, and a sealing sheet is provided on the limiting plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model utilizes the cooperation of a mounting base, suction head, slot, mounting plate, spring, spring block, fixed cone block, and sliding cone block to achieve self-locking when the insertion depth reaches the preset position, and release by pushing again. During operation, locking and releasing can be achieved with a simple push, allowing for quick and smooth installation and disassembly. This results in a suction head that is fast, misaligned, low-wear, and reusable, thus forming a self-locking and quick-release mechanism.

[0016] 2. This utility model can achieve automated installation and disassembly through the movement mechanism of the eight-channel pipetting assembly, which can significantly shorten the time for each pipette tip replacement or maintenance, increase the throughput per unit time, reduce reliance on manual operation, reduce fluctuations in labor costs, and avoid the risks of pipette tip misplacement, misalignment, and damage caused by improper human operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the mounting base structure of this utility model; Figure 3 This is a schematic diagram of the spring connection structure of this utility model; Figure 4 This is a schematic diagram of the suction head connection structure of this utility model.

[0018] In the diagram: 1. Eight-channel pipetting assembly body; 2. Mounting base; 3. Pipette tip; 4. Groove; 5. Mounting plate; 6. Spring; 7. Spring block; 8. Fixed cone block; 9. Sliding cone block; 10. Fixing block; 11. Limiting plate; 12. Elastic column; 13. Flow port. Detailed Implementation

[0019] 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.

[0020] like Figures 1 to 4 As shown, this utility model provides an eight-channel pipetting assembly that facilitates the loading and unloading of pipette tips. It includes an eight-channel pipetting assembly body 1, a mounting base 2 installed on the eight-channel pipetting assembly body 1, a pipette tip 3 detachably connected to the mounting base 2, the pipette tip 3 being made of glass, a slot 4 provided in the mounting base 2, a mounting plate 5 fixedly connected to the inner surface of the slot 4, a spring 6 fixedly connected to the outer surface of the mounting plate 5, a spring block 7 fixedly connected to the end of the spring 6 away from the mounting plate 5, a fixing cone block 8 fixedly connected to the outer surface of the pipette tip 3, a sliding cone block 9 slidably connected to the outer surface of the pipette tip 3, a fixing block 10 fixedly connected to the outer surface of the pipette tip 3, and a limit plate 11 fixedly connected to the lower surface of the fixing block 10.

[0021] Specifically, the sliding cone 9 is located below the fixed cone 8, and the fixed block 10 is located below the sliding cone 9.

[0022] Furthermore, the sliding cone 9 is movably connected to the fixed cone 8, and the sliding cone 9 is movably connected to the fixed block 10.

[0023] Furthermore, one side of the bullet block 7 is tilted.

[0024] It is worth noting that a sealing ring is fixedly connected to the upper surface of the suction head 3 for sealing.

[0025] It is worth noting that an elastic post 12 is fixedly connected to the outer surface of the mounting plate 5, and the other end of the elastic post 12 is fixedly connected to the spring block 7.

[0026] It is worth mentioning that the mounting base 2 is provided with a flow port 13, and the suction head 3 is movably connected to the flow port 13. The size of the suction head 3 and the flow port 13 are the same. When the suction head 3 is installed on the mounting base 2, the upper end of the suction head 3 is located inside the flow port 13, thereby ensuring a seal.

[0027] It is worth emphasizing that the limiting plate 11 is movably connected to the mounting base 2, and the limiting plate 11 is provided with a sealing sheet to limit the position of the suction head 3.

[0028] The eight-channel pipetting assembly body 1 is existing technology and will not be described in detail here. 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 here. The "front, back, left, and right" views of this device are... Figure 1 The direction shown in the diagram is the reference.

[0029] Working principle: In use, the pipette tip 3 is neatly placed under the mounting base 2. Then, the eight-channel pipetting assembly body 1 drives the mounting base 2 downward, inserting the pipette tip 3 into the mounting base 2. When the spring block 7 inside the mounting base 2 passes the fixed cone block 8, the spring block 7 abuts against the fixed cone block 8 and is subjected to pressure, thereby moving the elastic spring block 7 backward through the spring 6. The spring block 7 moves along the inclined surface of the fixed cone block 8. After the spring block 7 passes through the fixed cone block 8, the mounting base 2 stops moving downward, thus making the spring block 7 stuck between the fixed cone block 8 and the sliding cone block 9. The position of the mounting base 2 and the pipette tip 3 is fixed by the spring block 7 being stuck between the fixed cone block 8 and the sliding cone block 9, thus completing the installation of the pipette tip 3 and the mounting base 2. At this time, the upper end of the pipette tip 3 is located in the flow port 13. Then, the eight-channel pipetting assembly body 1 drives the mounting base 2... The device moves upward, lifting the fixed cone 8 through the straight surface of the spring block 7 inside the mounting base 2, thereby moving the pipette tip 3. Then, liquid aspiration and dispensing operations can be performed. When the pipette tip 3 needs to be replaced, the eight-channel pipetting assembly body 1 drives the mounting base 2 to move downward until the pipette tip 3 abuts against a plane. Then, the mounting base 2 continues to move downward, thereby moving the spring block 7 downward. The spring block 7 passes through the sliding cone 9 through the pressure of the inclined surface, and the movement of the spring block 7 is restricted by the fixed block 10. Then, the mounting base 2 moves upward, so that the spring block 7 moves upward and lifts the sliding cone 9 to slide on the pipette tip 3 until it contacts the fixed cone 8. Then, as the mounting base 2 continues to slide upward, the spring block 7 encounters the sliding pipette tip 3 along the fixed cone 8 and the sliding cone 9, thereby completing the removal of the pipette tip 3. Then, the same method is used to install a new pipette tip 3.

[0030] 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.

[0031] 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 pipetting assembly for easy tip loading and unloading, comprising an eight-channel pipetting assembly body (1), characterized in that: The eight-channel pipetting assembly body (1) is equipped with a mounting base (2), and a pipette tip (3) is detachably connected to the mounting base (2). A slot (4) is provided in the mounting base (2), and a mounting plate (5) is fixedly connected to the inner surface of the slot (4). A spring (6) is fixedly connected to the outer surface of the mounting plate (5). A spring block (7) is fixedly connected to the end of the spring (6) away from the mounting plate (5). A fixing cone block (8) is fixedly connected to the outer surface of the pipette tip (3). A sliding cone block (9) is slidably connected to the outer surface of the pipette tip (3). A fixing block (10) is fixedly connected to the outer surface of the pipette tip (3). A limit plate (11) is fixedly connected to the lower surface of the fixing block (10).

2. The eight-channel pipetting assembly for easy tip loading and unloading according to claim 1, characterized in that: The sliding cone (9) is located below the fixed cone (8), and the fixed block (10) is located below the sliding cone (9).

3. The eight-channel pipetting assembly for easy tip loading and unloading according to claim 1, characterized in that: The sliding cone (9) is movably connected to the fixed cone (8), and the sliding cone (9) is movably connected to the fixed block (10).

4. The eight-channel pipetting assembly for easy tip loading and unloading according to claim 1, characterized in that: One side of the spring block (7) is inclined.

5. An eight-channel pipetting assembly for easy tip loading and unloading according to claim 1, characterized in that: A sealing ring is fixedly connected to the upper surface of the suction head (3).

6. The eight-channel pipetting assembly for easy tip loading and unloading according to claim 1, characterized in that: An elastic column (12) is fixedly connected to the outer surface of the mounting plate (5), and the other end of the elastic column (12) is fixedly connected to the spring block (7).

7. An eight-channel pipetting assembly for easy tip loading and unloading according to claim 1, characterized in that: The mounting base (2) is provided with a flow port (13), and the suction head (3) is movably connected to the flow port (13). The size of the suction head (3) and the flow port (13) are equal.

8. An eight-channel pipetting assembly for easy tip loading and unloading according to claim 1, characterized in that: The limiting plate (11) is movably connected to the mounting base (2), and a sealing sheet is provided on the limiting plate (11).

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