Multi-channel variable-spacing pipetting module

Abstract

The utility model belongs to the technical field of laboratory equipment, and provides a multi-channel variable-spacing pipetting module which comprises a guide assembly, the guide assembly is connected with a fixed rod and a movable rod, the fixed rod and the movable rod are connected with a transmission assembly, the movable rod is connected with a driving assembly, and the fixed rod and the movable rod are connected with a liquid taking pipe; the transmission assembly comprises crossed rods, the two crossed rods are arranged in a crossed mode to form crossed arms, the multiple crossed arms are connected end to end to form a transmission part, the two ends of the transmission part are rotationally connected with auxiliary rods, the crossed arms are rotationally arranged on the fixed rod and the movable rod, and the auxiliary rods are rotationally arranged on the movable rod; the driving assembly can drive the rods to move, when the movable rods move, the auxiliary rods can be driven to rotate, then the cross rods are driven to rotate, the rotating cross rods and the rotating auxiliary rods can drive the other movable rods to move at equal intervals, then the distance between the liquid taking pipes can be rapidly adjusted according to the distance between containers, and deviation between the liquid taking pipes and the containers is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of laboratory equipment, in particular to a multi-channel variable-spacing liquid transfer module. Background Art

[0002] A pipette is a precision instrument commonly used in laboratories for accurately measuring and transferring liquids. When using it, you need to insert the pipette tip into the liquid, press the button to absorb the liquid, and then move the tip to the target container to release the liquid.

[0003] Currently, most commonly used pipettes are single-channel and can only complete one pipetting operation at a time. In order to improve efficiency, laboratories often need to conduct multiple sets of experiments, which requires a lot of time to repeat the pipetting operation, reducing the efficiency of the experiment. There are also some multi-channel pipettes. However, the spacing between the multiple channels of multi-channel pipettes cannot be changed. The container sizes vary, and the spacing between different containers is also different, which makes it easy for the channels to deviate from the containers when releasing liquid.

[0004] To this end, those skilled in the art have proposed a multi-channel variable-spacing pipetting module to solve the problems raised in the background art. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a multi-channel variable spacing pipetting module to solve the problems in the existing technology that single-channel pipettes take time to pipette large amounts of liquid, and multi-channel pipettes have fixed spacing and are easily deviated from the container when releasing liquid.

[0006] A multi-channel variable-spacing pipetting module comprises a guide assembly, wherein the guide assembly is connected to a fixed rod and a movable rod, wherein the fixed rod and the movable rod are connected to a transmission assembly, wherein the movable rod is connected to a drive assembly, and wherein the fixed rod and the movable rod are connected to a liquid collection tube;

[0007] The transmission assembly includes a cross rod, two of the cross rods are cross-arranged to form a cross arm, and several of the cross arms are connected end to end to form a transmission member. The two ends of the transmission member are rotatably connected to auxiliary rods, the cross arms are rotatably set on the fixed rod and the movable rod, and the auxiliary rod is rotatably set on the movable rod.

[0008] Preferably, the guide assembly includes a base plate, the base plate is fixedly connected to the side plates, the opposite surfaces of the two side plates are fixedly connected to the guide rods, the fixed rod is fixedly connected to the guide rods, and the movable rod is slidably connected to the guide rods.

[0009] Preferably, the driving assembly includes a mounting bracket fixedly connected to the base plate, the mounting bracket is fixedly connected to an electric push rod, the electric push rod is fixedly connected to a synchronization plate, and the synchronization plate is fixedly connected to the moving rod.

[0010] Preferably, it further comprises a clamping assembly provided on the fixed rod and the movable rod, and the clamping assembly is equipped with a limiting assembly.

[0011] Preferably, the clamping assembly includes a support plate fixedly connected to the fixed rod or the movable rod, the support plate is slidably connected to a tooth plate, the fixed rod or the movable rod is rotatably connected to a gear, the gear is engaged with the tooth plate, the two tooth plates are fixedly connected to clamping arms, the clamping arms are provided with an inclined surface, and the two clamping arms are connected to the liquid collection tube.

[0012] Preferably, the limiting assembly includes a mounting plate fixedly connected to the fixed rod or the movable rod, the mounting plate is connected to a limiting tongue, and the limiting tongue is made of elastic material.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The utility model drives the rod to move through the driving assembly. When the movable rod moves, it drives the auxiliary rod to rotate, and then drives the cross rod to rotate. The rotating cross rod and auxiliary rod drive the remaining movable rods to move equidistantly, and then the spacing of the liquid collection tubes can be quickly adjusted according to the spacing of the containers to avoid deviation between the liquid collection tubes and the containers.

[0015] 2. The utility model achieves the purpose of multi-channel liquid collection through multiple liquid collection tubes. A single operation can complete multiple liquid collection operations, thereby improving the efficiency of liquid collection and saving time.

[0016] 3. The utility model can generate resistance to the rotation of the gear through the limiting tongue, thereby preventing the gear from rotating at will, thereby preventing the clamping component from loosening the limit on the liquid collection tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall schematic diagram of a multi-channel variable-spacing pipetting module;

[0018] Figure 2 A schematic diagram of adjusting the spacing between a fixed rod and a movable rod of a multi-channel variable spacing pipetting module from a rear perspective;

[0019] Figure 3 A schematic diagram of a clamping assembly of a multi-channel variable-spacing pipetting module;

[0020] Figure 4 A schematic diagram of a limit assembly for a multi-channel variable-spacing pipetting module.

[0021] In the picture:

[0022] 1. Guide assembly; 101. Bottom plate; 102. Side plate; 103. Guide rod; 2. Fixed rod; 3. Moving rod; 4. Transmission assembly; 401. Cross rod; 402. Auxiliary rod; 5. Drive assembly; 501. Mounting frame; 502. Electric push rod; 503. Synchronous plate; 6. Liquid extraction tube; 7. Clamping assembly; 701. Support plate; 702. Tooth plate; 703. Gear; 704. Clamping arm; 705. Inclined surface; 8. Limiting assembly; 801. Mounting plate; 802. Limiting tongue. DETAILED DESCRIPTION

[0023] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] Example 1

[0025] As attached Figure 1 As shown, the utility model provides a multi-channel variable-spacing pipetting module, including a guide assembly 1, the guide assembly 1 is connected to a fixed rod 2 and a movable rod 3, wherein the movable rod 3 will slide along the length direction of the guide assembly 1, and the guide assembly 1 is used to assist the fixed rod 2 and the movable rod 3 to maintain smooth movement, the fixed rod 2 and the movable rod 3 are connected to a transmission assembly 4, and the movable rod 3 is connected to a driving assembly 5, wherein the driving assembly 5 is a power source, and the driving assembly 5 will drive the movable rod 3 to gather or disperse equidistantly with the fixed rod 2 as the center through the transmission assembly 4, thereby driving the liquid collection tube 6 to move, the fixed rod 2 and the movable rod 3 are connected to the liquid collection tube 6, wherein the number of the liquid collection tube 6 is the sum of the fixed rod 2 and the movable rod 3, and the purpose of multi-channel liquid collection is achieved by providing multiple liquid collection tubes 6;

[0026] As attached Figure 2 As shown, the transmission assembly 4 includes a cross rod 401, two cross rods 401 are cross-arranged to form a cross arm, and several cross arms are connected end to end to form a transmission member. The two ends of the transmission member are rotatably connected with auxiliary rods 402. When the angle of the auxiliary rod 402 at one end changes, the angle of the transmission member and the auxiliary rod 402 at the other end will change. The cross arm is rotatably set on the fixed rod 2 and the movable rod 3, and the auxiliary rod 402 is rotatably set on the movable rod 3. When the angle of the cross arm changes, the distance between the two ends of the cross arm will change, thereby changing the position of the movable rod 3.

[0027] From the above, it can be seen that when the driving component 5 drives the movable rod 3 at one end, the angle of the auxiliary rod 402 rotatably arranged on the movable rod 3 will change, thereby driving the angle of the transmission member and the auxiliary rod 402 at the other end to change. When the angle of the cross arm changes, the distance between the two ends of the cross arm will change, and at this time, the movable rod 3 will be driven to slide along the length direction of the guide component 1, so that multiple movable rods 3 are equidistantly gathered or dispersed with the fixed rod 2 as the center, thereby driving the liquid collection tube 6 to move to adapt to the spacing of the container.

[0028] Example 2

[0029] As attached Figure 1 As shown, this embodiment is basically the same as the previous embodiment, with the difference that the guide assembly 1 includes a base plate 101, the base plate 101 is fixedly connected to a side plate 102, the two side plates 102 are respectively arranged on the left and right sides of the front end surface of the base plate 101, the opposite surfaces of the two side plates 102 are fixedly connected to a guide rod 103, the fixed rod 2 is fixedly connected to the guide rod 103, the movable rod 3 is slidably connected to the guide rod 103, and the movable rod 3 can slide along the length direction of the guide rod 103, so that multiple guide rods 103 are equidistantly gathered or dispersed with the fixed rod 2 as the center.

[0030] As attached Figure 2 As shown, specifically, the driving component 5 includes a mounting frame 501 fixedly connected to the base plate 101, the mounting frame 501 is fixedly connected to an electric push rod 502, the electric push rod 502 is fixedly connected to a synchronization plate 503, wherein the electric push rod 502 is a power source that drives the synchronization plate 503 to move, and the synchronization plate 503 is fixedly connected to the movable rod 3, and when the synchronization plate 503 moves, it will move with the movable rod 3.

[0031] As can be seen from the above, the extension and retraction of the electric push rod 502 will carry the synchronization plate 503 and the movable rod 3 at one end to move along the guide rod 103. When the movable rod 3 moves, it will drive the auxiliary rod 402 on it to rotate, and then drive the transmission part and the auxiliary rod 402 at the other end to rotate. At this time, the distance between the two ends of the cross arm will change, and then drive multiple movable rods 3 to gather or disperse equidistantly with the fixed rod 2 as the center, thereby adjusting the spacing of the liquid collection tubes 6 according to the spacing of the containers.

[0032] Example 3

[0033] As attached Figure 3 As shown, this embodiment is basically the same as the previous embodiment, except that it further includes a clamping assembly 7 arranged on the fixed rod 2 and the movable rod 3, wherein the clamping assembly 7 is used to clamp and fix the liquid collection tube 6, and the clamping assembly 7 is equipped with a limiting assembly 8, wherein the limiting assembly 8 is used to prevent the clamping assembly 7 from loosening the limit on the liquid collection tube 6 due to accidents or shaking generated during the movement of the clamping assembly 7.

[0034] As attached Figure 3As shown, specifically, the clamping assembly 7 includes a support plate 701 fixedly connected to the fixed rod 2 or the movable rod 3, and the support plate 701 is slidably connected to a toothed plate 702, wherein the toothed plate 702 slides between the two support plates 701, and the fixed rod 2 or the movable rod 3 is rotatably connected to a gear 703, wherein the gear 703 can be driven manually or by a micro motor, and the gear 703 is meshed with the toothed plate 702. When the gear 703 rotates, it drives the two toothed plates 702 to move toward or oppositely. The two toothed plates 702 are fixedly connected to a clamping arm 704. When the two toothed plates 702 move toward or oppositely, the distance between the two clamping arms 704 is changed, thereby completing the action of clamping or releasing the liquid collection tube 6. The clamping arm 704 is provided with an inclined surface 705, which can prevent the liquid collection tube 6 from falling due to its own weight. The two clamping arms 704 are connected to the liquid collection tube 6, and the two clamping arms 704 move relative to each other until they contact the liquid collection tube 6, thereby clamping the liquid collection tube 6.

[0035] As attached Figure 4 As shown, further, the limiting assembly 8 includes a mounting plate 801 fixedly connected to the fixed rod 2 or the movable rod 3, and the mounting plate 801 is connected to the limiting tongue 802, wherein the head of the limiting tongue 802 is inserted into the tooth gap of the gear 703, and resistance is generated when the gear 703 rotates. The middle part of the limiting tongue 802 is "S"-shaped, so that the limiting tongue 802 has good elasticity so that it can be reset. The tail of the limiting tongue 802 is connected to the mounting plate 801. The limiting tongue 802 is made of elastic material, which can extend the service life of the limiting tongue 802.

[0036] As can be seen from the above, the head of the limiting tongue 802 is inserted into the tooth gap of the gear 703. When the gear 703 is about to rotate due to an accident or shaking during the movement of the clamping assembly 7, it will be restricted by the limiting tongue 802, and then the gear 703 stops rotating, thereby preventing the tooth plate 702 from moving with the clamping arm 704, and avoiding loosening the clamping of the liquid collection tube 6; when the gear 703 is driven, the driving force is greater than the limiting strength of the limiting tongue 802. When the gear 703 rotates, the gear 703 and the limiting tongue 802 are locked. The contacting teeth cause the head of the limiting tongue 802 to shift, and the middle part of the limiting tongue 802 is deformed. The teeth of the gear 703 that are in contact with the limiting tongue 802 are separated from the limiting tongue 802 as the gear 703 rotates. At this time, the limiting tongue 802 is reset. As the gear 703 rotates, the limiting tongue 802 contacts the next tooth and repeats the above process. At the same time, as the gear 703 rotates, the two tooth plates 702 will be driven to move toward or oppositely, completing the action of clamping or releasing the liquid collection tube 6.

[0037] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

[0038] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0039] In the description of this specification, the reference terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0040] The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the present invention may be combined with each other.

Claims

1. A multi-channel variable-spacing pipetting module, characterized by: The invention comprises a guide assembly (1), wherein the guide assembly (1) is connected to a fixed rod (2) and a movable rod (3), wherein the fixed rod (2) and the movable rod (3) are connected to a transmission assembly (4), wherein the movable rod (3) is connected to a drive assembly (5), and wherein the fixed rod (2) and the movable rod (3) are connected to a liquid extraction pipe (6); The transmission assembly (4) comprises a cross rod (401), two cross rods (401) are cross-arranged to form a cross arm, a plurality of cross arms are connected end to end to form a transmission member, both ends of the transmission member are rotatably connected to auxiliary rods (402), the cross arms are rotatably arranged on the fixed rod (2) and the movable rod (3), and the auxiliary rod (402) is rotatably arranged on the movable rod (3).

2. A multi-channel variable-spacing pipetting module according to claim 1, characterized in that: The guide assembly (1) comprises a bottom plate (101), the bottom plate (101) is fixedly connected to a side plate (102), the opposite surfaces of the two side plates (102) are fixedly connected to a guide rod (103), the fixed rod (2) is fixedly connected to the guide rod (103), and the movable rod (3) is slidably connected to the guide rod (103).

3. A multi-channel variable-spacing pipetting module according to claim 2, characterized in that: The driving assembly (5) comprises a mounting frame (501) fixedly connected to the base plate (101), the mounting frame (501) is fixedly connected to an electric push rod (502), the electric push rod (502) is fixedly connected to a synchronization plate (503), and the synchronization plate (503) is fixedly connected to the moving rod (3).

4. A multi-channel variable-spacing pipetting module according to claim 1 or 3, characterized in that: It also includes a clamping assembly (7) arranged on the fixed rod (2) and the movable rod (3), and the clamping assembly (7) is matched with a limiting assembly (8).

5. A multi-channel variable-spacing pipetting module according to claim 4, characterized in that: The clamping assembly (7) comprises a support plate (701) fixedly connected to the fixed rod (2) or the movable rod (3); the support plate (701) is slidably connected to a toothed plate (702); the fixed rod (2) or the movable rod (3) is rotatably connected to a gear (703); the gear (703) is meshed with the toothed plate (702); the two toothed plates (702) are fixedly connected to clamping arms (704); the clamping arms (704) are provided with inclined surfaces (705); and the two clamping arms (704) are connected to the liquid extraction tube (6).

6. A multi-channel variable-spacing pipetting module according to claim 5, characterized in that: The limiting assembly (8) comprises a mounting plate (801) fixedly connected to the fixed rod (2) or the movable rod (3); the mounting plate (801) is connected to a limiting tongue (802); and the limiting tongue (802) is made of elastic material.

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