Feeding mechanism and pipetting device

Abstract

The utility model provides a kind of feeding mechanism and pipetting equipment.The feeding mechanism includes feeding bin, receiving component and feeding assembly.Formed with the containing space for stacking material in feeding bin, the upper end of feeding bin has the inlet and outlet of material for the inlet and outlet of material.Receiving component includes avoiding mechanism and receiving bin, receiving bin is set on the inlet and outlet of material of feeding bin, avoiding mechanism rotationally set in receiving bin and can change the degree of shielding inlet and outlet by rotating relative to receiving bin.Feeding assembly is movably set in containing space, and feeding assembly is used to push material to receiving bin.It is not only convenient to use experimental consumables in feeding bin, but also releases the operation space on experimental workbench, so that experimental personnel have wider operation area, effectively improve the efficiency of experimental operation.In addition, it can also reduce the contact between experimental consumables in feeding bin and dust, aerosol in experimental environment, effectively reduce the pollution risk.

Description

Technical Field

[0001] This utility model relates to the technical field of biological detection, specifically to a feeding mechanism and a pipetting device. Background Technology

[0002] Pipette tips are disposable consumables used in laboratories in conjunction with pipettes. Due to their precise liquid transfer capabilities, they are widely used in various fields and scenarios, including life sciences, medical testing, and drug development. In experiments in these fields, to ensure the accuracy of results and avoid cross-contamination, a new pipette tip is typically required for each experimental step.

[0003] However, due to the limited layout of the experimental workbench, the complicated experimental procedures, and the large number of pipette tips required, a large number of pipette tips piled up on the workbench will occupy the limited operating space on the workbench and greatly reduce the operating efficiency. Utility Model Content

[0004] In order to at least partially solve the problems existing in the prior art, a feeding mechanism is provided according to one aspect of the present invention.

[0005] The feeding mechanism includes a feeding bin, a receiving assembly, and a feeding component. The feeding bin has a space for stacking materials, and its upper end has an inlet / outlet for material entry and exit. The receiving assembly includes a clearance mechanism and a receiving bin. The receiving bin is positioned above the inlet / outlet of the feeding bin, and the clearance mechanism is rotatably mounted within the receiving bin and can change the degree of obstruction of the inlet / outlet by rotating relative to the receiving bin. The feeding component is movably mounted within the receiving space and is used to push materials towards the receiving bin. The receiving assembly has a receiving state and a discharging state. In the receiving state, the feeding component drives the material to abut against the clearance mechanism and rotates the clearance mechanism, allowing at least one piece of material to enter the receiving bin. In the discharging state, the clearance mechanism isolates the feeding bin and the receiving bin.

[0006] This invention relates to a feeding mechanism where the feeding hopper can hold multiple materials stacked together. When feeding is required, the materials are pushed towards the receiving hopper via the feeding component. Upon entering the receiving hopper, the materials abut against a clearance mechanism, applying a resistance force. The clearance mechanism rotates after receiving this force to allow the materials to enter the receiving hopper, at which point the receiving component is in a receiving state. When the resistance force is removed, the receiving component switches from the receiving state to the discharging state, i.e., the clearance mechanism rotates to a horizontal position to support the materials, thus confining them within the receiving hopper for easy discharge. In biological experiments, the feeding mechanism can be embedded in a cabinet beneath the workbench, with only the receiving component mounted on the workbench. This not only facilitates access to consumables within the feeding hopper but also frees up operating space on the workbench, providing researchers with a more spacious operating area and effectively improving experimental efficiency. In addition, it can reduce the contact between experimental consumables in the supply silo and dust and aerosols in the experimental environment, effectively reducing the risk of pollution.

[0007] For example, the avoidance mechanism includes a flap and a rotating shaft. The flap is rotatably connected to the side wall of the receiving hopper via the rotating shaft, so that the flap is rotatable between a first position that at least partially blocks the inlet and outlet and a second position that opens the inlet and outlet.

[0008] For example, the receiving assembly further includes an elastic element, the two ends of which are connected to the outer side wall of the flap and the receiving bin, respectively. The elastic element applies a force to the flap, causing it to rotate from the second position to the first position.

[0009] For example, the avoidance mechanism also includes a roller and a fork connected to each other. The roller is sleeved on the rotating shaft, and the fork drives the rotating shaft to rotate through the roller to limit the flap to the second position.

[0010] For example, the feeding mechanism also includes a detector disposed on the receiving bin, and a sensing part adapted to the detector is disposed on the flip plate. When the flip plate is in the first position, the detector and the sensing part are close to each other to generate a sensing signal.

[0011] For example, the feeding assembly includes a feeding plate and an actuation assembly connected to the feeding plate. The feeding plate is movably disposed within the receiving space, and the actuation assembly drives the feeding plate to move so that the material on the feeding plate moves toward or away from the inlet / outlet.

[0012] For example, the actuation component includes a drive member and a rotating member and a transmission member that are connected by transmission. The drive member is connected to the feed plate, and the rotating member is sleeved on the drive shaft of the drive member. The drive member drives the rotating member to rotate, so that the rotating member drives the drive member and the feed plate to move along the length direction of the transmission member.

[0013] For example, the rotating component is a gear, the transmission component is a rack, the rack has a toothed surface and a toothless surface, the gear interacts with the toothed surface, and the toothless surface is connected to the feeding bin.

[0014] For example, the feeding bin includes a base and multiple limiting rods, which are spaced apart on the base to enclose and form a receiving space.

[0015] According to another aspect of the present invention, a pipetting device is also provided, comprising a worktable and a feeding mechanism as described above, wherein the feeding mechanism is disposed on the worktable, and the receiving component is located above the worktable, and the feeding hopper is located below the worktable.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0017] The above and other objects, features, and advantages of this utility model will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this utility model and form part of the specification. They are used together with the embodiments of this utility model to explain the utility model and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0018] Figure 1 A perspective view of a feeding mechanism according to an exemplary embodiment of the present invention is shown;

[0019] Figure 2 A perspective view of a receiving assembly according to an exemplary embodiment of the present invention is shown;

[0020] Figure 3 A cross-sectional view of a receiving assembly according to an exemplary embodiment of the present invention is shown;

[0021] Figure 4 A perspective view of a feeding assembly according to an exemplary embodiment of the present invention is shown;

[0022] Figure 5 A perspective view of a feeding hopper according to an exemplary embodiment of the present invention is shown.

[0023] The components indicated by the reference numerals in the figures are as follows:

[0024] 1. Feeding bin; 11. Storage space; 12. Inlet / outlet; 13. Base; 14. Limiting rod; 2. Receiving assembly; 21. Avoidance mechanism; 211. Flip plate; 212. Rotating shaft; 213. Roller; 214. Shift fork; 215. Sensing unit; 22. Receiving bin; 23. Elastic element; 3. Feeding assembly; 31. Feeding plate; 32. Actuation assembly; 321. Driving element; 322. Transmission element; 323. Toothed surface; 4. Detector; 5. Material. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model more apparent, exemplary embodiments according to this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this utility model, and not all embodiments of this utility model. It should be understood that this utility model is not limited to the exemplary embodiments described herein. Based on the embodiments of this utility model described herein, all other embodiments obtained by those skilled in the art without inventive effort should fall within the protection scope of this utility model.

[0026] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0027] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0028] One embodiment of this utility model provides a feeding mechanism that can embed the feeding bin 1 into a cabinet below the experimental workbench, allowing only the receiving component 2 to be mounted on the experimental workbench, thus freeing up operating space on the workbench surface. The feeding mechanism according to an embodiment of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] like Figures 1 to 3As shown, the feeding mechanism includes a feeding bin 1, a receiving assembly 2, and a feeding assembly 3. The feeding bin 1 has a receiving space 11 for stacking materials 5, and its upper end has an inlet / outlet 12 for the materials 5 to enter and exit. The receiving assembly 2 includes a clearance mechanism 21 and a receiving bin 22. The receiving bin 22 is disposed on the inlet / outlet 12 of the feeding bin 1. The clearance mechanism 21 is rotatably disposed within the receiving bin 22 and can change the degree of obstruction of the inlet / outlet 12 by rotating relative to the receiving bin 22. The feeding assembly 3 is movably disposed within the receiving space 11 and is used to push the materials 5 towards the receiving bin 22. The receiving assembly 2 has a receiving state and a discharging state. In the receiving state, the feeding assembly 3 drives the materials 5 to abut against the clearance mechanism 21 and rotates the clearance mechanism 21, allowing at least one material 5 to enter the receiving bin 22. In the discharging state, the clearance mechanism 21 isolates the feeding bin 1 and the receiving bin 22.

[0030] The aforementioned feeding bin 1 may have a vertically formed accommodating space 11. Material 5 can be stacked sequentially in the accommodating space 11 through the inlet / outlet 12 above the feeding bin 1, thereby completing the feeding of the feeding bin 1.

[0031] The receiving bin 22 can be set on the inlet / outlet 12 of the feeding bin 1, so that the material 5 located in the accommodating space 11 can enter the receiving bin 22 sequentially from the inlet / outlet 12 of the feeding bin 1 under the pushing of the feeding component 3.

[0032] The aforementioned receiving component 2 can have a receiving state and a discharging state. Specifically, the receiving state corresponds to the receiving process, which can be specifically represented as the process of material 5 being transported from the receiving space 11 in the feeding bin 1 to the receiving bin 22. That is, the receiving component 2 completes the receiving process in the receiving state. In the receiving state, the feeding component 3 drives the material 5 to abut against the avoidance mechanism 21 and drives the avoidance mechanism 21 to rotate so that at least one material 5 enters the receiving bin 22. Similarly, the discharging state corresponds to the discharging process, which can be specifically represented as the process of material 5 being stably placed in the receiving bin 22 and being manually or automatically retrieved from the receiving bin 22 based on actual needs. That is, the receiving component 2 completes the discharging process in the discharging state, and in the discharging state, the avoidance mechanism 21 isolates the feeding bin 1 and the receiving bin 22.

[0033] The aforementioned obstacle avoidance mechanism 21 is rotatably mounted inside the receiving bin 22. When the receiving bin 22 is positioned above the inlet / outlet 12 of the feeding bin 1, the projection of the obstacle avoidance mechanism 21 toward the feeding bin 1 can partially block the inlet / outlet 12. In the receiving state, the feeding assembly 3 can push the material 5 from the receiving space 11 toward the receiving bin 22. After the material 5 reaches the receiving bin 22, its upper edge can abut against the obstacle avoidance mechanism 21, causing the obstacle avoidance mechanism 21 to rotate upwards, thereby allowing the material 5 to completely enter the receiving bin 22. When the material 5 continues to move upwards under the action of the feeding device, the material 5 can detach from the obstacle avoidance mechanism 21. The obstacle avoidance mechanism 21 can rotate to a horizontal state under its own gravity to re-block part of the inlet / outlet 12. At this time, the receiving assembly 2 changes from the receiving state to the discharging state. When the receiving assembly 2 is in the discharge state, the clearance mechanism 21 can support the bottom of the material 5, thereby stably confining the material 5 within the receiving bin 22.

[0034] The feeding mechanism of this utility model allows for the stacking and storage of multiple materials 5 within the accommodating space 11 of the feeding bin 1. When feeding is required, the materials 5 can be pushed towards the receiving bin 22 via the feeding component 3. Upon entering the receiving bin 22, the materials 5 can abut against the avoidance mechanism 21 and apply a resisting force to it. The avoidance mechanism 21 can rotate after being subjected to the force to allow the materials 5 to enter the receiving bin 22. At this time, the receiving component 2 can be in the receiving state. When the resisting force is removed, the receiving component 2 can switch from the receiving state to the discharging state, that is, the avoidance mechanism 21 rotates to a horizontal state to support the materials 5, thereby confining the materials 5 within the receiving bin 22 to facilitate the discharge of the materials 5 from the receiving bin 22. In biological experiments, the feeding mechanism can be embedded in a cabinet beneath the workbench, with only the receiving assembly 2 mounted on the workbench. This not only facilitates access to consumables within the feeding chamber 1 but also frees up operating space on the workbench, providing researchers with a more spacious operating area and effectively improving experimental efficiency. Furthermore, it reduces contact between consumables in the feeding chamber 1 and dust or aerosols in the experimental environment, effectively lowering the risk of contamination.

[0035] In some embodiments, such as Figures 1 to 3 As shown, the avoidance mechanism 21 includes a flap 211 and a rotating shaft 212. The flap 211 is rotatably connected to the side wall of the receiving bin 22 via the rotating shaft 212, so that the flap 211 can rotate between a first position that at least partially blocks the inlet / outlet 12 and a second position that opens the inlet / outlet 12.

[0036] The aforementioned rotating shaft 212 can be inserted into the flap 211 along the length of the flap 211. When the rotating shaft 212 rotates, it can drive the flap 211 to rotate back and forth between the first position and the second position.

[0037] The first and second positions mentioned above can be represented as different flipping positions of the flap 211 relative to the inlet / outlet 12. Specifically, when the flap 211 is in the first position, its projection towards the feeding hopper 1 can be located inside the inlet / outlet 12, thus allowing it to support the material 5. When the flap 211 is in the second position, its projection towards the feeding hopper 1 can be located outside the inlet / outlet 12, allowing the material 5 to freely enter the receiving hopper 22 from the feeding hopper 1. It can be understood that the discharge state of the receiving component 2 can correspond to the first position of the flap 211, and the receiving state of the receiving component 2 can correspond to the second position of the flap 211.

[0038] In the above embodiment, the flap 211 can rotate between a first position and a second position under the drive of the rotating shaft 212. This ensures the flexibility of the flap 211's rotation, simplifies the mechanical structure of the receiving assembly 2, and significantly reduces the manufacturing and maintenance costs and difficulties of the receiving assembly 2.

[0039] In some embodiments, such as Figure 1 and Figure 2 As shown, the receiving assembly 2 also includes an elastic element 23. The two ends of the elastic element 23 are connected to the outer side walls of the flap 211 and the receiving bin 22, respectively. The elastic element 23 applies a force to the flap 211 to rotate it from the second position to the first position.

[0040] One end of the elastic element 23 can be connected to the outer wall of the receiving bin 22, and the other end of the elastic element 23 can be connected to the end of the flap 211 away from the receiving bin 22. When the material 5 abuts against the flap 211 and drives the flap 211 to rotate from the first position to the second position, the elastic element 23 can be in a stretched state. After the material 5 separates from the flap 211, the elastic element 23 can change from the stretched state to the natural state, thereby driving the flap 211 to rotate from the second position to the first position.

[0041] The aforementioned elastic element 23 can be a spring or elastic rubber, etc. Of course, any device that can switch between a stretched state and a natural state after being subjected to force is within the scope of this application, and this application does not make any specific limitations on it.

[0042] In the above embodiment, after the material 5 enters the receiving bin 22 and separates from the flap 211, the elastic element 23 can drive the flap 211 to rotate from the second position to the first position, thereby realizing the automatic reset of the flap 211. In this way, the material 5 can be supported in the receiving bin 22 and the material 5 can be conveniently discharged from the receiving bin 22, effectively improving the practicality and ease of use of the receiving component 2.

[0043] In some embodiments, such as Figures 1 to 3As shown, the obstacle avoidance mechanism 21 also includes a roller 213 and a fork 214 connected to each other. The roller 213 is sleeved on the rotating shaft 212, and the fork 214 drives the rotating shaft 212 to rotate through the roller 213, so as to limit the flap 211 to the second position.

[0044] The end of the aforementioned rotating shaft 212 can pass through the outer wall of the receiving bin 22 and be connected to the roller 213. The fork can be connected to the outer wall of the roller 213. The rotating shaft 212 can be rotated by rotating the fork, thereby causing the flap 211 to rotate between the first position and the second position.

[0045] When material 5 needs to be added to the receiving space 11 of the feeding bin 1, the fork can be rotated to rotate the flap 211 to the second position. A corresponding insertion hole can be formed on the outer wall of the receiving bin 22, allowing a pin to be inserted into the hole. The pin abuts against the fork, thus limiting the flap 211 to the second position and preventing it from rotating to the first position under the influence of the elastic element 23. In this way, the user can sequentially place material 5 into the receiving space 11 of the feeding bin 1 through the receiving bin 22 and the inlet / outlet 12, allowing for timely replenishment of material 5 when it is insufficient in the feeding bin 1.

[0046] In embodiments not shown, the flap 211 can be rotated using an electronic control device, thereby limiting the flap 211 to a second position. This application does not specifically limit this.

[0047] In the above embodiment, when it is necessary to replenish material 5 into the receiving space 11 of the feeding bin 1, the fork 214 can be rotated and the roller 213 can drive the rotating shaft 212 to rotate synchronously, thereby limiting the flap 211 to the second position to open the inlet / outlet 12. In this way, material 5 can freely pass through the receiving bin 22 and the feeding bin 1. Through the cooperation of the roller 213 and the fork 214, the operation steps for replenishing material 5 can be greatly simplified, effectively improving the convenience and practicality of the feeding mechanism.

[0048] In some embodiments, such as Figures 1 to 3 As shown, the feeding mechanism also includes a detector 4 disposed on the receiving bin 22, and a sensing part 215 adapted to the detector 4 is disposed on the flap 211. When the flap 211 is in the first position, the detector 4 and the sensing part 215 are close to each other to generate a sensing signal.

[0049] The detection end of the aforementioned detector 4 can be positioned towards the flap 211. When the flap 211 is in the second position, the detection end of the detector 4 can be far away from the sensing part 215 on the flap 211, and at this time, the detector 4 cannot generate a sensing signal. However, when the flap 211 is in the first position, the detection end of the detector 4 can be close to the sensing part 215 on the flap 211, and the detector 4 can generate a sensing signal. This sensing signal can be transmitted to an audio-visual device or a mobile terminal, etc., to remind the user that the material 5 has been transported from the feeding bin 1 to the receiving bin 22.

[0050] The detector 4 can be a proximity sensor or an infrared sensor, etc. This application does not make a specific limitation on it. Any device that can sense the position information of the sensing unit 215 is acceptable.

[0051] In the above embodiment, when the flap 211 is in the first position to support the material 5, the detector 4 provided on the receiving bin 22 can approach the sensing part 215 on the flap 211 and generate a sensing signal. The sensing signal can be used to remind the user that the material 5 is in the receiving bin 22 so as to facilitate subsequent operations on the material 5, thus further improving the practicality and convenience of the feeding mechanism.

[0052] In some embodiments, such as Figure 4 As shown, the feeding assembly 3 includes a feeding plate 31 and an actuation assembly 32 connected to the feeding plate 31. The feeding plate 31 is movably disposed within the receiving space 11. The actuation assembly 32 drives the feeding plate 31 to move, so that the material 5 located on the feeding plate 31 moves toward or away from the inlet / outlet 12.

[0053] Multiple materials 5 can be stacked sequentially on the feeding plate 31. An actuation component 32 can be positioned below the feeding plate 31, driving the feeding plate 31 to move vertically. Specifically, the actuation component 32 can drive the feeding plate 31 to move vertically upwards, thereby sequentially conveying the materials 5 from the feeding bin 1 to the receiving bin 22. The actuation component 32 can also drive the feeding plate 31 to move vertically downwards, thus creating a space within the feeding bin 1 for storing the materials 5 when it is necessary to replenish the feeding bin 1.

[0054] In the above embodiment, the actuation component 32 can drive the feeding plate 31 to move, thereby causing the material 5 on the feeding plate 31 to move towards or away from the inlet / outlet 12. On the one hand, it can achieve precise control of the material 5 to adapt to different feeding requirements. On the other hand, it eliminates the need for manual pushing of the feeding plate 31, reducing the risk of user's hands coming into contact with the feeding component 3 and effectively improving the safety of the feeding mechanism.

[0055] In some embodiments, such as Figure 4As shown, the actuation assembly 32 includes a drive member 321 and a rotating member (not shown) and a transmission member 322 that are connected by transmission. The drive member 321 is connected to the feeding plate 31. The rotating member is sleeved on the drive shaft of the drive member 321. The drive member 321 drives the rotating member to rotate so that the rotating member drives the drive member 321 and the feeding plate 31 to move along the length direction of the transmission member 322.

[0056] The aforementioned transmission component 322 can be elongated, and the elongated transmission component 322 can be fixedly disposed within the accommodating space 11 along its length. The driving component 321 can be connected to the lower part of the feeding plate 31, and the driving component 321 can drive the rotating component to rotate, thereby moving along the transmission component 322 that meshes with the rotating component.

[0057] In the above embodiments, the circumferential rotation formed by the driving member 321 driving the rotating member can be converted into linear motion along the length direction of the transmission member 322. This ensures that the feeding plate 31 can be driven to move in the vertical direction, while also simplifying the structure of the actuation component 32, reducing the volume of the actuation component 32, ensuring the miniaturization of the feeding bin 1, and reducing the space occupied by the feeding bin 1.

[0058] In some embodiments, such as Figure 4 As shown, the rotating component is a gear, and the transmission component 322 is a rack. The rack has a toothed surface 323 and a toothless surface. The gear interacts with the toothed surface 323, and the toothless surface is connected to the feeding bin 1.

[0059] In the above embodiments, the rotational motion of the gear can be converted into linear motion along the rack through the cooperation of the gear and the rack. While realizing the conversion of motion form, it also simplifies the mechanical connection structure of the actuation component 32 and saves the volume and space occupied by the actuation component 32.

[0060] In some embodiments, such as Figure 5 As shown, the feeding bin 1 includes a base 13 and a limiting rod 14. There are multiple limiting rods 14, which are spaced apart on the base 13 to enclose and form a receiving space 11.

[0061] The limiting rod 14 can be made of plastic or stainless steel, preferably stainless steel. Stainless steel limiting rod 14 has excellent corrosion resistance, which not only ensures that the feeding bin 1 is lightweight and sturdy, but also reduces the requirements of the feeding bin 1 for the operating environment. This application does not make specific limitations on the material of the limiting rod 14.

[0062] In the above embodiments, the multiple limiting rods 14 are arranged at intervals along the circumference of the base 13 to provide more uniform support and restriction. This not only effectively improves the stability and safety of the feeding bin 1 structure, but also allows the user to intuitively observe the quantity of material 5 in the feeding bin 1, so that material 5 can be replenished in time when the material 5 in the feeding bin 1 is insufficient.

[0063] According to another aspect of the present invention, a pipetting device is also provided, comprising a worktable and a feeding mechanism as described above, wherein the feeding mechanism is disposed on the worktable, and the receiving component 2 is located above the worktable, and the feeding hopper 1 is located below the worktable.

[0064] When the feeding mechanism is used in a pipetting device, it can store pipette tips. When the feeding mechanism is placed on the worktable, a large number of pipette tips can be placed in the feeding bin 1 below the worktable, thus freeing up operating space on the worktable and facilitating pipetting operations for the user. Furthermore, the feeding assembly 3 can transport the pipette tips from the feeding bin 1 to the receiving bin 22 above the worktable, facilitating the retrieval of the pipette tips and effectively improving the pipetting efficiency of the device.

[0065] Although exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above exemplary embodiments are merely illustrative and are not intended to limit the scope of the invention. Various changes and modifications can be made therein by those skilled in the art without departing from the scope and spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as claimed in the appended claims.

[0066] For ease of description, the term "connection" may be used herein to describe the relationship between one or more elements or features shown in the figure and other elements or features. It should be understood that "connection" may include direct connections or indirect connections via other elements or features, and this document is intended to encompass all such cases.

[0067] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0068] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0069] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A feeding mechanism, characterized in that, include: A feeding bin, wherein a space for stacking materials is formed inside the feeding bin, and the upper end of the feeding bin has an inlet and outlet for the materials to enter and exit. A receiving assembly includes a clearance mechanism and a receiving bin. The receiving bin is disposed on the inlet and outlet of the feeding bin. The clearance mechanism is rotatably disposed within the receiving bin and can change the degree to which it blocks the inlet and outlet by rotating relative to the receiving bin. as well as A feeding assembly is movably disposed within the receiving space and is used to push the material toward the receiving bin. The receiving component has a receiving state and a discharging state. In the receiving state, the feeding component drives the material to abut against the avoidance mechanism and drives the avoidance mechanism to rotate so that at least one of the materials enters the receiving bin. In the discharging state, the avoidance mechanism isolates the feeding bin and the receiving bin.

2. The feeding mechanism according to claim 1, characterized in that, The avoidance mechanism includes a flap and a rotating shaft. The flap is rotatably connected to the side wall of the receiving hopper via the rotating shaft, so that the flap can rotate between a first position that at least partially blocks the inlet and outlet and a second position that opens the inlet and outlet.

3. The feeding mechanism according to claim 2, characterized in that, The receiving assembly also includes an elastic element, the two ends of which are connected to the outer side wall of the flap and the receiving bin, respectively. The elastic element applies a force to the flap, causing it to rotate from the second position to the first position.

4. The feeding mechanism according to claim 2, characterized in that, The avoidance mechanism also includes a roller and a fork connected to each other. The roller is sleeved on the rotating shaft, and the fork drives the rotating shaft to rotate through the roller to limit the flap to the second position.

5. The feeding mechanism according to claim 2, characterized in that, The feeding mechanism also includes a detector disposed on the receiving bin, and a sensing part adapted to the detector is disposed on the flip plate. When the flip plate is in the first position, the detector and the sensing part are close to each other to generate a sensing signal.

6. The feeding mechanism according to claim 1, characterized in that, The feeding assembly includes a feeding plate and an actuation assembly connected to the feeding plate. The feeding plate is movably disposed within the receiving space. The actuation assembly drives the feeding plate to move, so that the material on the feeding plate moves toward or away from the inlet / outlet.

7. The feeding mechanism according to claim 6, characterized in that, The actuation assembly includes a driving component, a rotating component, and a transmission component that are connected by transmission. The driving component is connected to the feeding plate, and the rotating component is sleeved on the driving shaft of the driving component. The driving component drives the rotating component to rotate, so that the rotating component drives the driving component and the feeding plate to move along the length direction of the transmission component.

8. The feeding mechanism according to claim 7, characterized in that, The rotating component is a gear, and the transmission component is a rack. The rack has a toothed surface and a toothless surface. The gear interacts with the toothed surface, and the toothless surface is connected to the feeding hopper.

9. The feeding mechanism according to claim 2, characterized in that, The feeding bin includes a base and multiple limiting rods, which are spaced apart on the base to enclose and form the receiving space.

10. A pipetting device, characterized in that, The workbench and the feeding mechanism as described in any one of claims 1 to 9, wherein the feeding mechanism is disposed on the workbench, and the receiving component is located above the workbench, and the feeding bin is located below the workbench.

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