A pipette tip delivery device

Abstract

The utility model relates to pipette tip conveying technical field, especially relate to a pipette tip conveying device of pipette gun, including support frame, be equipped with the clamping plate subassembly for clamping and releasing the pipette tip on the support frame, the inside of support frame is equipped with a plurality of vertical state settings conveying pipe, the input of conveying pipe is equipped with annular air blowing subassembly, when the clamping plate subassembly releases the pipette tip, the airflow that annular air blowing subassembly blows forms the airflow of going down along the inner wall of conveying pipe to push the pipette tip and fall along conveying pipe, the utility model discloses through clamping plate subassembly and releases the pipette tip into conveying pipe inside, simultaneously annular air blowing subassembly carries out the blowing of pipette tip in conveying pipe inside, the airflow that it blows will push the pipette tip and fall along conveying pipe, solved the problem that the traditional pipette tip conveying process is easy to appear in conveying pipe and is stuck, is missed.

Description

Technical Field

[0001] This utility model relates to the field of pipette tip delivery technology, and in particular to a pipette tip delivery device. Background Technology

[0002] In the production process of pipette tips, the tips need to be collected and arranged in an orderly manner. Currently, the commonly used tip delivery device mainly consists of a support frame and multiple delivery tubes on the support frame. During use, the tray rack for storing the tips is placed below the support frame, and the internal space of the tray rack corresponds one-to-one with the outlet of each delivery tube. After the tips are produced, they are transported to the outlet through the delivery tubes and fall into the corresponding station of the tray rack by their own weight, thus completing the transfer and initial arrangement of the tips.

[0003] However, existing conveying devices have certain drawbacks in practical applications. Due to factors such as the structure and material characteristics of the suction head itself or the insufficient smoothness of the inner wall of the conveying pipe, the suction head often gets stuck when falling through the conveying pipe. That is, the suction head gets stuck inside the conveying pipe and cannot fall off naturally by its own weight. It requires the operator to gently tap the conveying pipe to dislodge the stuck suction head through external vibration. This not only increases the labor intensity of the operators and reduces production efficiency, but also makes it easy to miss some during manual inspection and handling, affecting the continuity of subsequent production processes and the stability of product quality.

[0004] Therefore, based on the above situation, it is necessary to design a pipette tip delivery device to solve the above problems. Utility Model Content

[0005] This invention provides a pipette tip delivery device to solve the problems in the prior art.

[0006] The technical problem solved by this utility model is achieved by the following technical solution: A pipette tip delivery device includes a support frame with a clamping plate assembly for holding and releasing the pipette tip. The support frame has multiple vertically arranged delivery tubes inside. The input end of each delivery tube is equipped with an annular air blowing assembly. When the clamping plate assembly releases the pipette tip, the airflow blown by the annular air blowing assembly forms a downward airflow along the inner wall of the delivery tube, thereby pushing the pipette tip down along the delivery tube.

[0007] Preferably, the annular air blowing assembly includes an annular air passage and an air blowing head circumferentially disposed on the annular air passage. The annular air passages in the plurality of delivery pipes are connected to an air source through air pipes, and the air pipes are provided with air pressure regulating valves.

[0008] Preferably, the air blowing head is inclined, and the air outlet direction of each air blowing head is towards the central axis of the annular airway.

[0009] Preferably, the inlet end of the delivery pipe is provided with a flared portion, and the annular air blowing assembly is located inside the flared portion.

[0010] Preferably, the output end of the conveying pipe has multiple air outlets along its circumference.

[0011] Preferably, the flared portion is provided with a guide ring, which is located above the annular air blowing assembly.

[0012] Preferably, the assembly also includes a controller, which is electrically connected to both the clamp assembly and the annular blowing assembly.

[0013] The beneficial effects of this utility model are: the suction head is released into the delivery pipe through the clamping plate assembly, and at the same time the annular blowing assembly blows the suction head inside the delivery pipe. The airflow will push the suction head down along the delivery pipe, which solves the problem of traditional suction heads getting stuck or leaking in the delivery pipe during the delivery process. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 A three-dimensional structural schematic diagram provided for this utility model; Figure 2 A front view structural schematic diagram provided for this utility model; Figure 3 A cross-sectional structural schematic diagram provided for this utility model; Figure 4 This is a partial structural schematic diagram of the present invention; Figure 5 This is a cross-sectional structural diagram of the conveying pipe in this utility model.

[0016] In the diagram, 1 is the support frame; 2 is the clamping plate assembly; 3 is the delivery pipe; 4 is the annular air blowing assembly; 41 is the annular air passage; 42 is the air blowing head; 5 is the air pipe; 6 is the air source; 7 is the air pressure regulating valve; 8 is the flared part; 9 is the air outlet; 10 is the flow guide; 11 is the controller; and 12 is the suction head. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0018] Reference Figures 1-5 As shown, a pipette tip delivery device includes a support frame 1, which is constructed from high-strength aluminum alloy profiles. Its top and bottom frames are connected by four reinforcing ribs to ensure sufficient load-bearing strength and stability. Symmetrical holes are provided at both the top and bottom of the support frame 1, with the hole spacing matching the spacing of the tray rack. A clamping assembly 2 is mounted on the support frame 1. The clamping assembly 2 includes a linear module mounted on the top of the support frame 1, a drive seat slidably connected to the linear module, and pneumatic grippers symmetrically arranged at the bottom of the drive seat. The linear module can drive the pneumatic grippers to move horizontally, enabling the transfer of the pipette tip 12 between the pick-up position and the inlet of the delivery tube 3. This is prior art and will not be elaborated upon here. The clamping assembly 2 is used to clamp the pipette tip 12 and... The suction head 12 is aligned with the hole on the support frame 1. The support frame 1 has multiple vertically arranged delivery pipes 3 inside. The two ends of the delivery pipes 3 are aligned with the holes at the top and bottom of the support frame 1. Then, the clamping plate assembly 2 releases the suction head 12 it is holding. Each suction head 12 enters the corresponding delivery pipe 3. At the same time, the annular air blowing assembly 4 at the input end of the delivery pipe 3 is opened. The airflow blown by the annular air blowing assembly 4 forms a downward airflow along the inner wall of the delivery pipe 3. The suction head 12 inside the delivery pipe 3 is pushed by the airflow as it falls under its own gravity and falls along the delivery pipe 3 into the suction head 12 rack below the support frame 1. This avoids the phenomenon of the suction head 12 getting stuck in the delivery pipe 3 in the traditional process, and reduces manual operation and the problem of missing suction heads 12.

[0019] Reference Figures 3-5 As shown, the input end of the delivery pipe 3 is provided with a flared part 8, and the annular air blowing assembly 4 is located inside the flared part 8. The flared part 8 can guide the released suction head 12 to smoothly enter the interior of the delivery pipe 3, while accommodating the annular air blowing assembly 4.

[0020] The flared section 8 is equipped with a guide ring 10, which is located above the annular blowing assembly 4. The guide ring 10 has an annular structure and is fixedly connected to the inner wall of the flared section 8. The lower surface of the guide ring 10 is inclined, and the inclination angle is the same as the angle of the inner wall of the flared section 8. When the suction head 12 is released from the clamping plate assembly 2, the guide ring 10 can play a preliminary guiding role for the suction head 12, preventing the suction head 12 from hitting the inner wall of the flared section 8 due to its tilted falling posture and inserting into the gap between the annular blowing assembly 4 and the inner wall of the flared section 8, and further reducing the jamming phenomenon that occurs during the falling of the suction head 12.

[0021] Reference Figure 5As shown, the annular air blowing assembly 4 further includes an annular air passage 41 and air blowing heads 42 circumferentially arranged on the annular air passage 41. The annular air passage 41 can be made of stainless steel, plastic or other materials. It has an annular main channel inside and multiple air blowing heads 42 are evenly distributed around the annular air passage 41. The annular air passages 41 corresponding to the multiple delivery pipes 3 are connected by an air pipe 5. One end of the air pipe 5 is connected to an external high-pressure air source 6, which can be a high-pressure air tank, vacuum pump or the like. The other end is connected to each annular air passage 41 through a branch air pipe 5. Each air pipe 5 is equipped with an air pressure regulating valve 7, which can accurately adjust the airflow pressure delivered into the delivery pipe 3 according to the weight and size differences of different specifications of suction heads 12, so as to ensure that the airflow thrust is matched with the weight of the suction head 12.

[0022] The air blowing head 42 is inclined and the air outlet direction of each air blowing head 42 is towards the central axis of the annular air channel 41. This enables multiple airflows to converge in the central region of the delivery pipe 3 and form a spiral downward wall-adhering airflow field along the inner wall of the delivery pipe 3. This can create a wrapping thrust on the suction head 12 and ensure that the suction head 12 falls smoothly along the pipe axis.

[0023] Reference Figures 1-5 As shown, further, the output end of the conveying pipe 3 is provided with multiple air outlets 9 along its circumference. When the airflow pushes the suction head 12 down to the output end along the conveying pipe 3, some of the airflow can be discharged outside the pipe through the air outlets 9, effectively balancing the air pressure in the conveying pipe 3 and preventing the air pressure in the conveying pipe 3 from being too high, which would cause the airflow to form turbulence at the output end and thus affect the stability of the falling posture of the suction head 12.

[0024] Reference Figure 1 As shown, further, it also includes a controller 11. The controller 11 is electrically connected to the clamping plate assembly 2 and the annular air blowing assembly 4. The controller 11 can be a PLC programmable controller 11. Its input end is electrically connected to the positioning sensor of the clamping plate assembly 2 and the photoelectric sensor in the delivery pipe 3. The photoelectric sensor is used to detect whether the suction head 12 enters the delivery pipe 3. Its output end is electrically connected to the drive cylinder of the pneumatic gripper and the electromagnetic control valve of the annular air blowing assembly 4, respectively, to realize the time-coordinated control of each component. First, after the positioning sensor detects that the suction head 12 is accurately aligned with the input end of the delivery pipe 3, it sends a signal to the controller 11. After receiving the signal, the controller 11 controls the pneumatic gripper on the clamping plate assembly 2 to perform a release action. The suction head 12 begins to fall under the action of gravity. The controller 11 synchronously triggers the electromagnetic control valve to open, and the annular air blowing assembly 4 begins to supply air. The airflow forms along the inner wall of the delivery pipe 3 to propel the suction head 12. When the photoelectric sensor detects that the suction head 12 has passed through the delivery pipe 3, the controller 11 controls the electromagnetic control valve to close, completing a single delivery process.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pipette tip delivery device, comprising a support frame (1), wherein the support frame (1) is provided with a clamping plate assembly (2) for clamping and releasing a pipette tip (12), and wherein the support frame (1) is provided with a plurality of vertically arranged delivery tubes (3), characterized in that, The input end of the delivery pipe (3) is provided with an annular air blowing assembly (4). When the clamp assembly (2) releases the suction head (12), the airflow blown out by the annular air blowing assembly (4) forms a downward airflow along the inner wall of the delivery pipe (3) to push the suction head (12) down along the delivery pipe (3).

2. The pipette tip delivery device according to claim 1, characterized in that, The annular air blowing assembly (4) includes an annular air passage (41) and an air blowing head (42) circumferentially arranged on the annular air passage (41). The annular air passages (41) in the multiple delivery pipes (3) are connected to an air source (6) through an air pipe (5). An air pressure regulating valve (7) is provided on the air pipe (5).

3. The pipette tip delivery device according to claim 2, characterized in that, The air blowing head (42) is inclined, and the air blowing direction of each air blowing head (42) is towards the central axis of the annular air passage (41).

4. The pipette tip delivery device according to claim 1, characterized in that, The inlet end of the delivery pipe (3) is provided with a flared section (8), and the annular air blowing assembly (4) is located inside the flared section (8).

5. A pipette tip delivery device according to claim 1, characterized in that, The output end of the conveying pipe (3) is provided with multiple air outlets (9) along its circumference.

6. A pipette tip delivery device according to claim 4, characterized in that, The flared part (8) is provided with a guide ring (10), which is located above the annular blowing assembly (4).

7. A pipette tip delivery device according to claim 1, characterized in that, It also includes a controller (11), which is electrically connected to the clamp assembly (2) and the annular blowing assembly (4).

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