Pipetting mechanism capable of independently changing distance and multi-channel pipetting device

Abstract

The invention relates to the technical field of multi-channel pipetting equipment. The invention discloses a pipetting mechanism capable of independently changing the distance. The pipetting mechanism comprises a mounting frame and a plurality of pipetting gun assemblies. The mounting frame is provided with a rack, and the rack is arranged in the horizontal direction. The pipette assembly comprises a driving part and a pipette head mounted on the driving part, the driving part comprises a driving motor and a gear, the driving motor is in driving connection with the gear, and the gear is meshed with the rack; wherein the plurality of pipette assemblies are horizontally arranged at intervals along the arrangement direction of the rack; the driving motor can drive the gear to rotate so as to drive the corresponding pipette assembly to move along the horizontal direction. The pipette heads of the plurality of pipette assemblies are respectively used for adding samples into the plurality of sample containers. By means of the arrangement, a user can adjust the distance between the pipette assemblies according to actual requirements, the flexibility is higher, and the use requirements of the user are met. Meanwhile, the invention further discloses a multi-channel pipetting device.

Description

Technical Field

[0001] The present application relates to the technical field of multi-channel pipetting equipment, for example, to a pipetting mechanism capable of independently changing the distance and a multi-channel pipetting device. Background Art

[0002] Multi-channel pipetting equipment is a precision instrument commonly used in laboratories, mainly used for accurate aspiration, distribution and transfer of liquids. Because multi-channel pipetting equipment has the advantages of high efficiency, accuracy, automation and intelligence, it is widely used in medical diagnosis, biological experiments and drug screening. At the same time, in order to facilitate the pipetting operation, a driving structure is generally provided to drive the pipette gun to move.

[0003] In the related art, a general driving structure drives multiple pipettes to move by a rotating shaft in cooperation with a cam, or drives multiple pipettes to move by a plug plate in cooperation with a cam.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] In the related art, the existing multi-channel pipetting device with a driving structure drives multiple pipettes to move at the same time through the same set of driving structures, which makes it impossible for users to adjust the spacing between the multiple pipettes, has low flexibility, and cannot meet the user's usage needs.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiments provide a pipetting mechanism and a multi-channel pipetting device that can independently change the distance, and the multiple pipette gun assemblies of the above-mentioned pipetting mechanism are respectively provided with a driving motor and a gear, and the gears are respectively meshed with the rack. In this way, the driving motor of any pipette gun assembly can drive the pipette gun assembly to move along the rack independently through the gear to adjust the distance between the pipette gun assembly and the adjacent pipette gun assembly. With such a configuration, the user can adjust the distance between the multiple pipette gun assemblies according to actual needs, which is more flexible to meet the user's usage needs.

[0009] The disclosed embodiment provides a pipetting mechanism capable of independently changing the pitch, including: a mounting frame and a plurality of pipetting gun assemblies. The mounting frame is provided with a rack, and the rack is arranged in the horizontal direction; the pipetting gun assembly includes a driving part and a pipetting gun head installed on the driving part, the driving part includes a driving motor and a gear, the driving motor is connected to the gear drive, and the gear and the rack are meshed with each other; wherein, the plurality of pipetting gun assemblies are arranged horizontally at intervals along the setting direction of the rack; the driving motor can drive the gear to rotate, thereby driving the corresponding pipetting gun assembly to move in the horizontal direction.

[0010] In some embodiments, the mounting frame is also provided with a slide rail, and the slide rail and the rack are arranged parallel to each other; the pipette gun assembly is provided with a slide groove corresponding to the slide rail, and the slide groove is slidably connected to the slide rail; wherein the driving unit can drive the corresponding pipette gun assembly to slide along the slide rail.

[0011] In some embodiments, a left-side limiting portion is provided at the left end of the slide rail, and a right-side limiting portion is provided at the right end of the slide rail; wherein the left-side limiting portion and the right-side limiting portion are respectively used to limit multiple pipette gun assemblies so that the multiple pipette gun assemblies can move between the left-side limiting portion and the right-side limiting portion.

[0012] In some embodiments, a first distance from the left limiting portion to the right limiting portion is less than or equal to a length of the rack.

[0013] In some embodiments, the mounting frame is provided with a plurality of slide rails, and the plurality of slide rails are respectively arranged parallel to the rack; the pipette gun assembly is provided with a plurality of slide grooves, and the plurality of slide grooves are respectively slidably connected to the plurality of slide rails.

[0014] In some embodiments, at least one slide rail is disposed above the rack, and at least one slide rail is disposed below the rack; at least one slide groove is disposed on the upper half of the driving part, and at least one slide groove is disposed on the lower half of the driving part.

[0015] In some embodiments, the pipette assembly further includes: a distance sensor. The distance sensor is used to obtain a second distance between the corresponding pipette assembly and an adjacent pipette assembly; when any pipette assembly moves toward an adjacent pipette assembly and the second distance between the adjacent pipette assembly is less than or equal to a distance threshold, the drive motor is controlled to stop.

[0016] In some embodiments, the pipette gun assembly further includes an elastic buffer member, which is disposed on a side wall surface of the driving portion and corresponds to an adjacent pipette gun assembly.

[0017] The embodiment of the present disclosure also provides a multi-channel liquid transfer device comprising: a housing and the above-mentioned liquid transfer mechanism with independent variable distance. The liquid transfer mechanism with independent variable distance is installed on the housing.

[0018] In some embodiments, the multi-channel pipetting device further comprises: a pipetting moving assembly. The pipetting moving assembly comprises a horizontally arranged driving track, wherein the driving track and the rack are arranged perpendicular to each other; wherein the driving track is in transmission connection with the pipetting mechanism to drive the pipetting mechanism to move along the driving track.

[0019] The embodiments of the present disclosure provide a pipetting mechanism and a multi-channel pipetting device capable of independently changing the distance, which can achieve the following technical effects:

[0020] The disclosed embodiment provides a pipetting mechanism with independently variable pitch, including: a mounting frame and a plurality of pipette gun assemblies. The mounting frame is provided with a rack, and the rack is arranged in the horizontal direction; the pipette gun assembly includes a driving part and a pipette gun head installed on the driving part, and the driving part includes a driving motor and a gear, the driving motor is connected to the gear drive, and the gear and the rack are meshed with each other; wherein, the plurality of pipette gun assemblies are arranged horizontally at intervals along the setting direction of the rack; the driving motor can drive the gear to rotate, and then drive the corresponding pipette gun assembly to move in the horizontal direction. The pipette gun heads of the plurality of pipette gun assemblies are respectively used to add samples to a plurality of sample containers. During use, the user can control the driving motor of any pipette gun assembly to drive the pipette gun head to move to the corresponding sample container. In this way, the user can adjust the spacing of the plurality of pipette gun assemblies according to the spacing of the plurality of sample containers. With such a setting, the user can adjust the spacing between the plurality of pipette gun assemblies according to actual needs, with higher flexibility to meet the user's usage needs.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a schematic structural diagram of a multi-channel liquid transfer device provided in an embodiment of the present disclosure;

[0024] Figure 2 It is a schematic structural diagram of a pipetting mechanism capable of independently changing the distance provided by an embodiment of the present disclosure;

[0025] Figure 3 yes Figure 2 A magnified schematic diagram of the local structure;

[0026] Figure 4 is a schematic structural diagram of a pipette gun assembly provided in an embodiment of the present disclosure;

[0027] Figure 5is a schematic structural diagram of a driving unit provided by an embodiment of the present disclosure;

[0028] Figure 6 is a schematic diagram of the structure of a driving motor and a gear provided in an embodiment of the present disclosure;

[0029] Figure 7 is a schematic structural diagram of another independently variable-distance pipetting mechanism provided in an embodiment of the present disclosure;

[0030] Figure 8 yes Figure 7 A magnified schematic diagram of the local structure.

[0031] Reference numerals:

[0032] 10: mounting frame; 11: rack; 12: slide rail; 13: limit part;

[0033] 20: Pipette assembly; 21: drive unit; 22: Pipette head; 23: drive motor; 24: gear; 25: mobile bracket; 26: slide; 27: distance sensor;

[0034] 30: Pipette moving assembly. DETAILED DESCRIPTION

[0035] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0036] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0037] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0038] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0039] Unless otherwise stated, the term "plurality" means two or more.

[0040] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0041] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0043] like Figures 1 to 8 As shown, the disclosed embodiment provides a pipetting mechanism and a multi-channel pipetting device with independently variable pitch, and the plurality of pipetting gun assemblies 20 of the above-mentioned pipetting mechanism are respectively provided with a driving motor 23 and a gear 24, and the gears 24 are respectively engaged with the rack 11. In this way, the driving motor 23 of any pipetting gun assembly 20 can drive the pipetting gun assembly 20 to move along the rack 11 alone through the gear 24 to adjust the spacing between the pipetting gun assembly 20 and the adjacent pipetting gun assembly 20. With such a configuration, the user can adjust the spacing between the plurality of pipetting gun assemblies 20 according to actual needs, with higher flexibility to meet the user's usage needs.

[0044] like Figures 1 to 8As shown, the embodiment of the present disclosure provides a pipetting mechanism with independently variable pitch, including: a mounting frame 10 and a plurality of pipetting gun assemblies 20. The mounting frame 10 is provided with a rack 11, and the rack 11 is arranged in the horizontal direction; the pipetting gun assembly 20 includes a driving part 21 and a pipetting gun head 22 installed on the driving part 21, the driving part 21 includes a driving motor 23 and a gear 24, the driving motor 23 is drivingly connected to the gear 24, and the gear 24 is meshed with the rack 11; wherein, the plurality of pipetting gun assemblies 20 are arranged horizontally and spaced apart along the setting direction of the rack 11; the driving motor 23 can drive the gear 24 to rotate, thereby driving the corresponding pipetting gun assembly 20 to move in the horizontal direction.

[0045] Specifically, the pipetting mechanism also includes a control device, which is electrically connected to the drive motors 23 of the plurality of pipette gun assemblies 20. The rack 11 is arranged on the mounting frame 10 in the horizontal direction. The driving part 21 of the pipette gun assembly 20 also includes a mobile bracket 25, the drive motor 23 is fixedly arranged on the side of the mobile bracket 25 close to the rack 11, and the pipette gun head 22 is installed on the side of the mobile bracket 25 away from the rack 11 to avoid the pipette gun head 22 from interfering with the movement of the pipette gun assembly 20. The drive motor 23 includes an output shaft, which is fixedly connected to the center point of the gear 24 to drive the gear 24 to rotate forward or reversely. The gears 24 of the plurality of pipette gun assemblies 20 are respectively meshed and connected with the rack 11. In this way, if the user needs to adjust the spacing between any pipette assembly 20 and an adjacent pipette assembly 20, the control device can be used to control the driving motor 23 of the pipette assembly 20 to drive the gear 24 to rotate forward or reversely, thereby driving the pipette assembly 20 to move along the rack 11 in a direction away from or close to the adjacent pipette assembly 20, thereby adjusting the spacing between the pipette assembly 20 and the adjacent pipette assembly 20. With such a configuration, the user can adjust the spacing between multiple pipette assemblies 20 according to actual needs, with greater flexibility to meet the user's usage needs.

[0046] In some practical applications, the pipetting mechanism includes a first pipette assembly 20 and a second pipette assembly 20, and the first pipette assembly 20 and the second pipette assembly 20 are arranged in sequence from left to right. If the user needs to increase the spacing between the first pipette assembly 20 and the second pipette assembly 20, the control device can be used to control the drive motor 23 of the first pipette assembly 20 to drive the gear 24 to rotate forward, so that the first pipette assembly 20 moves to the left as a whole; the user can also control the drive motor 23 of the second pipette assembly 20 to drive the gear 24 to rotate in the opposite direction, so that the second pipette assembly 20 moves to the right as a whole. If the user needs to reduce the spacing between the first pipette assembly 20 and the second pipette assembly 20, the drive motor 23 of the first pipette assembly 20 can be controlled to drive the gear 24 to rotate in the opposite direction, so that the first pipette assembly 20 moves to the right as a whole; the user can also control the drive motor 23 of the second pipette assembly 20 to drive the gear 24 to rotate forward, so that the second pipette assembly 20 moves to the left as a whole.

[0047] In other practical applications, the pipetting mechanism includes a first pipette assembly 20, a second pipette assembly 20 and a third pipette assembly 20, and the first pipette assembly 20, the second pipette assembly 20 and the third pipette assembly 20 are arranged in sequence from left to right. If the user needs to increase the spacing between the first pipette assembly 20 and the second pipette assembly 20, and keep the spacing between the second pipette assembly 20 and the third pipette assembly 20 unchanged, the user can control the driving motor 23 of the first pipette assembly 20 to rotate forward so that the first pipette assembly 20 moves to the left as a whole; the user can also control the driving motors 23 of the second pipette assembly 20 and the third pipette assembly 20 to rotate in the opposite direction at the same time, so that the second pipette assembly 20 and the third pipette assembly 20 move to the right as a whole synchronously. If the user needs to increase the distance between the first pipette gun assembly 20 and the second pipette gun assembly 20, and reduce the distance between the second pipette gun assembly 20 and the third pipette gun assembly 20, the user can control the drive motor 23 of the second pipette gun assembly 20 to rotate in the opposite direction so that the second pipette gun assembly 20 moves to the right as a whole; the user can also control the drive motor 23 of the first pipette gun assembly 20 and the third pipette gun assembly 20 to rotate forward so that the first pipette gun assembly 20 and the third pipette gun assembly 20 move to the left as a whole synchronously.

[0048] like Figure 1 As shown, optionally, the number of the pipette gun assemblies 20 of the pipetting mechanism is greater than or equal to 2, and less than or equal to 15. For example, the number of the pipette gun assemblies 20 can be 2, 5, 8, 12 or 15.

[0049] like Figure 2 and Figure 3As shown, in some embodiments, the mounting frame 10 is also provided with a slide rail 12, and the slide rail 12 and the rack 11 are arranged parallel to each other; the pipette gun assembly 20 is provided with a slide groove 26 corresponding to the slide rail 12, and the slide groove 26 is slidably connected to the slide rail 12; wherein the driving part 21 can drive the corresponding pipette gun assembly 20 to slide along the slide rail 12.

[0050] Specifically, the slide rail 12 is horizontally arranged on the mounting bracket in a form parallel to the rack 11, and the movable bracket 25 of the pipette gun assembly 20 is provided with a slide groove 26 corresponding to the slide rail 12. The slide groove 26 of the movable bracket 25 is sleeved on the outer side of the slide rail 12 so that the pipette gun assembly 20 can slide along the slide rail 12. In this way, when the driving motor 23 drives the pipette gun assembly 20 to move along the rack 11 with the gear 24, the slide groove 26 and the slide rail 12 can play a supporting and auxiliary guiding role to improve the stability of the pipette gun assembly 20 during movement.

[0051] like Figure 2 and Figure 3 As shown, in some embodiments, a left-side limiting portion 13 is provided at the left end portion of the slide rail 12, and a right-side limiting portion 13 is provided at the right end portion of the slide rail 12; wherein the left-side limiting portion 13 and the right-side limiting portion 13 are respectively used to limit the plurality of pipette gun assemblies 20 so that the plurality of pipette gun assemblies 20 can move between the left-side limiting portion 13 and the right-side limiting portion 13.

[0052] Specifically, the left end of the slide rail 12 is provided with a left-side limiting protrusion to form a left-side limiting portion 13, and the right end of the slide rail 12 is provided with a right-side limiting protrusion to form a right-side limiting portion 13. In this way, when the leftmost pipette gun assembly 20 slides to the left to the left end of the slide rail 12, the left-side limiting protrusion can abut against the leftmost pipette gun assembly 20 to prevent the pipette gun assembly 20 from continuing to slide. When the rightmost pipette gun assembly 20 slides to the right to the right end of the slide rail 12, the right-side limiting protrusion can abut against the rightmost pipette gun assembly 20 to prevent the pipette gun assembly 20 from continuing to slide. In this way, the pipette gun assembly 20 can be prevented from detaching from the slide rail 12 when sliding, thereby improving the reliability of the pipetting mechanism.

[0053] In some embodiments, a first distance from the left limiting portion 13 to the right limiting portion 13 is less than or equal to a length of the rack 11 .

[0054] Specifically, the first distance refers to the distance from the left limiting portion 13 to the right limiting portion 13. When the pipette gun assembly 20 slides to the left to the left end of the slide rail 12, the left limiting portion 13 limits the pipette gun assembly 20 to stop the pipette gun assembly 20 from sliding further. At this time, the gear 24 of the pipette gun assembly 20 is still in meshing with the rack 11, and the user can control the drive motor 23 to drive the gear 24 to rotate in the opposite direction, thereby driving the pipette gun assembly 20 to move to the right. Similarly, when the pipette gun assembly 20 slides to the right to the right end of the slide rail 12, the right limiting portion 13 limits the pipette gun assembly 20 to stop the pipette gun assembly 20 from sliding further. At this time, the gear 24 of the pipette gun assembly 20 is still in meshing with the rack 11, and the user can control the drive motor 23 to drive the gear 24 to rotate in the forward direction, thereby driving the pipette gun assembly 20 to move to the left. Such an arrangement can prevent the gear 24 of the pipette gun assembly 20 from being separated from the rack 11, further improving the reliability of the pipetting mechanism.

[0055] like Figure 2 As shown, in some embodiments, the mounting frame 10 is provided with a plurality of slide rails 12 , and the plurality of slide rails 12 are respectively arranged parallel to the rack 11 ; the pipette gun assembly 20 is provided with a plurality of slide grooves 26 , and the plurality of slide grooves 26 are respectively slidably connected to the plurality of slide rails 12 .

[0056] Specifically, the mounting frame 10 is provided with a plurality of slide rails 12 parallel to each other, and the plurality of slide rails 12 are arranged at intervals. The mobile bracket 25 is provided with a plurality of slide grooves 26 corresponding to the plurality of slide rails 12. The plurality of slide rails 12 guide the liquid transfer gun assembly 20, and the stability of the liquid transfer gun assembly 20 during movement can be further improved.

[0057] Optionally, the distance between the uppermost slide rail 12 and the lowermost slide rail 12 is greater than or equal to a preset distance to ensure the stability of the pipette gun assembly 20 during movement.

[0058] In some embodiments, at least one slide rail 12 is disposed above the rack 11 , and at least one slide rail 12 is disposed below the rack 11 ; at least one slide groove 26 is disposed in the upper half of the driving portion 21 , and at least one slide groove 26 is disposed in the lower half of the driving portion 21 .

[0059] Specifically, at least one slide rail 12 is respectively arranged above and below the rack 11, which can prevent the slide rails 12 from being too compact, resulting in poor guiding effect of the slide rails 12. At the same time, at least one slide groove 26 is respectively arranged on the upper and lower halves of the driving part 21, and multiple slide grooves 26 and slide rails 12 can guide the upper and lower halves of the driving part 21 at the same time, further improving the stability of the pipette gun assembly 20 during movement.

[0060] In some embodiments, the pipette assembly 20 further includes: a distance sensor 27. The distance sensor 27 is used to obtain a second distance between the corresponding pipette assembly 20 and an adjacent pipette assembly 20; when any pipette assembly 20 moves toward an adjacent pipette assembly 20 and the second distance between the adjacent pipette assembly 20 is less than or equal to a distance threshold, the drive motor 23 is controlled to stop.

[0061] Specifically, the distance sensor 27 is disposed on the driving part 21 of the pipette assembly 20, and is disposed toward the pipette adjacent to the pipette assembly 20. If adjacent pipette assemblies 20 are disposed on both sides of the pipette assembly 20, then distance sensors 27 are disposed on both sides of the pipette assembly 20. The distance sensor is electrically connected to the control device, and the control device can control the corresponding drive motor 23 to stop according to the second distance.

[0062] When the pipette assembly 20 moves toward the adjacent pipette assembly 20, the distance sensor 27 can obtain the second distance between the pipette assembly 20 and the ringing pipette assembly 20 in real time. If the second distance is less than or equal to the distance threshold, the distance sensor sends an early warning signal to the control device. After the control device receives the early warning signal, the drive motor 23 of the pipette assembly 20 is controlled to stop to prevent the pipette assembly 20 from colliding with the adjacent pipette assembly 20.

[0063] In some practical applications, the pipetting mechanism includes a first pipette gun assembly 20 and a second pipette gun assembly 20. A first distance sensor is provided on the side of the driving part 21 of the first pipette gun assembly 20 facing the second pipette gun assembly 20, and a second distance sensor is provided on the side of the driving part 21 of the second pipette gun assembly 20 facing the first pipette gun assembly 20. When the first pipette gun assembly 20 moves in the direction of the second pipette gun assembly 20, the first distance sensor can obtain the distance between the first pipette gun assembly 20 and the second pipette gun assembly 20 in real time. When the distance between the first pipette gun assembly 20 and the second pipette gun assembly 20 is less than or equal to the distance threshold, the first distance sensor sends a warning signal to the control device, and the control device simultaneously controls the driving motor 23 of the first pipette gun assembly 20 to stop, so as to avoid the first pipette gun assembly 20 and the second pipette gun assembly 20 from colliding.

[0064] Optionally, the distance sensor may be an infrared distance sensor, an ultrasonic distance sensor, a laser distance sensor, or the like.

[0065] In some embodiments, the pipette assembly 20 further includes an elastic buffer member, which is disposed on the side wall of the driving portion 21 and corresponds to adjacent pipette assemblies 20 .

[0066] Specifically, the elastic buffer is made of elastic materials such as rubber, foam or sponge, etc. The elastic buffer is attached to the side wall of the driving part 21 to prevent two adjacent pipette gun assemblies 20 from colliding, thereby preventing the pipette gun assemblies 20 from being damaged.

[0067] like Figures 1 to 8 As shown, the embodiment of the present disclosure further provides a multi-channel pipetting device comprising: a housing and the above-mentioned pipetting mechanism with independently variable distance. The pipetting mechanism with independently variable distance is installed on the housing.

[0068] Specifically, the housing is provided with a container storage area, and the container storage area is used to place the sample container. The liquid transfer mechanism is installed on the housing, and the liquid transfer mechanism is located above the container storage area.

[0069] In the multi-channel pipetting device with the independently variable-distance pipetting mechanism provided by the present application, a plurality of pipette gun assemblies 20 are respectively provided with a driving motor 23 and a gear 24, and the gears 24 are respectively engaged with the rack 11. In this way, the driving motor 23 of any pipette gun assembly 20 can drive the pipette gun assembly 20 to move along the rack 11 independently through the gear 24 to adjust the spacing between the pipette gun assembly 20 and the adjacent pipette gun assembly 20. With such a configuration, the user can adjust the spacing between the plurality of pipette gun assemblies 20 according to actual needs, which is more flexible and can meet the user's usage needs.

[0070] like Figure 1 As shown, in some embodiments, the multi-channel pipetting device further includes: a pipetting moving assembly 30. The pipetting moving assembly 30 includes a horizontally arranged driving track, and the driving track and the rack 11 are arranged perpendicular to each other; wherein the driving track is in transmission connection with the pipetting mechanism to drive the pipetting mechanism to move along the driving track.

[0071] Specifically, the driving track is arranged horizontally, and the driving track is perpendicular to the rack 11. For example, if the rack 11 is arranged in the left-right direction, the driving track is arranged in the front-back direction. In this way, the pipette tip 22 can be driven to move freely in the horizontal plane by the liquid transfer mechanism in cooperation with the drive motor 23, the gear 24 and the rack 11, further improving the flexibility of the multi-channel liquid transfer device.

[0072] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A pipetting mechanism capable of independently changing the distance, characterized in that: include: The mounting frame is provided with a rack, and the rack is arranged in a horizontal direction; A plurality of pipette assemblies, each pipette assemblies comprising a driving part and a pipette head mounted on the driving part, the driving part comprising a driving motor and a gear, the driving motor is drivingly connected to the gear, and the gear is meshed with the rack; Wherein, a plurality of the pipette gun assemblies are arranged horizontally and spaced apart along the arrangement direction of the rack; The driving motor can drive the gear to rotate, thereby driving the corresponding liquid transfer gun assembly to move in a horizontal direction.

2. The liquid transfer mechanism according to claim 1, characterized in that: The mounting frame is further provided with a slide rail, and the slide rail and the rack are arranged parallel to each other; and, The pipette gun assembly is provided with a slide groove corresponding to the slide rail, and the slide groove is slidably connected to the slide rail; Wherein, the driving part can drive the corresponding pipette gun assembly to slide along the slide rail.

3. The liquid transfer mechanism according to claim 2, characterized in that: The left end of the slide rail is provided with a left limit portion, and the right end of the slide rail is provided with a right limit portion; The left-side limiting portion and the right-side limiting portion are respectively used to limit the plurality of pipette gun assemblies so that the plurality of pipette gun assemblies can move between the left-side limiting portion and the right-side limiting portion.

4. The liquid transfer mechanism according to claim 3, characterized in that: A first distance from the left limiting portion to the right limiting portion is less than or equal to a length of the rack.

5. The liquid transfer mechanism according to claim 2, characterized in that: The mounting frame is provided with a plurality of the slide rails, and the plurality of the slide rails are respectively arranged parallel to the rack; and, The pipette gun assembly is provided with a plurality of the slide grooves, and the plurality of the slide grooves are respectively slidably connected to a plurality of the slide rails.

6. The liquid transfer mechanism according to claim 5, characterized in that: At least one of the slide rails is disposed above the rack, and at least one of the slide rails is disposed below the rack; and, The upper half of the driving part is provided with at least one slide groove, and the lower half of the driving part is provided with at least one slide groove.

7. The liquid transfer mechanism according to any one of claims 1 to 6, characterized in that: The pipette assembly also includes: A distance sensor, used for acquiring a second distance between a corresponding pipette gun assembly and an adjacent pipette gun assembly; When any of the pipette gun components moves toward an adjacent pipette gun component and a second distance between the adjacent pipette gun component and the adjacent pipette gun component is less than or equal to a distance threshold, the driving motor is controlled to stop.

8. The liquid transfer mechanism according to any one of claims 1 to 6, characterized in that: The pipette assembly also includes: The elastic buffer is arranged on the side wall surface of the driving part and is arranged corresponding to the adjacent pipette gun assembly.

9. A multi-channel liquid transfer device, characterized in that: include: case; and, The independently variable distance pipetting mechanism according to any one of claims 1 to 8 is mounted on the housing.

10. The multi-channel pipetting device according to claim 9, characterized in that: Also includes: The liquid transfer moving assembly comprises a horizontally arranged driving track, wherein the driving track and the rack are arranged perpendicular to each other; Wherein, the driving track is transmission-connected with the liquid transfer mechanism to drive the liquid transfer mechanism to move along the driving track.

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