Pipette tip arranging device

Abstract

The utility model provides a pipette tip arranging device which comprises a screening funnel, a first conveying belt, a horizontal protection plate assembly, a vertical protection plate assembly, an air blowing assembly and a second conveying belt. Through structural optimization of the air blowing assembly and the protective plate, the device can accurately screen the conveying direction of the pipette tip by utilizing the physical characteristics of the pipette tip. The pipette tips with the forward tips continue to be conveyed forwards along the first conveying belt, the pipette tips with the forward tail ends are guided to the vertical protection plate assembly and enter the second conveying belt, automatic screening of the pipette tips in the conveying direction is achieved, and the whole arrangement device is simple, rapid and efficient, simple in structure, low in cost, high in reliability and suitable for popularization and application. And the pipette tips in different directions can be arranged in order after being put down, so that convenience is provided for subsequent selection and insertion operation.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment for detection, in particular to a pipette tip arranging device. Background Art

[0002] Pipettes and pipette tips are widely used in chemical and biological production experiments to quantitatively aspirate, transfer, and dilute various liquid reagents and samples. Pipette tips are used in conjunction with pipettes, and common specifications include 20-300ul, 100-1000ul, 1000-5000ul, or other ranges. The appearance of the matching pipette tips increases slightly depending on the maximum range. Conventional pipette tips are hollow, smooth plastic shapes with a round top and a pointed bottom. However, during the production or sales process, pipette tips are mostly bulked in plastic bags. Experimenters need to manually insert them into pipette boxes for disinfection and standby use. Factors such as the large number of pipette tips, the long time required, and the easy introduction of contamination sources during the insertion process seriously affect the safety and efficiency of pipette tips.

[0003] Therefore, it is necessary to develop a pipette tip sorting device to facilitate manufacturers or laboratories to sort out pipette tips, thereby improving the safety and efficiency of experiments. Utility Model Content

[0004] In view of this, the utility model proposes a pipette tip arranging device, which can arrange pipette tips with different inclinations in an orderly manner to facilitate selection and insertion operations.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] The utility model provides a pipette tip arranging device, comprising:

[0007] Screening funnel, used to lower the pipette tip with long conical structure;

[0008] The first conveyor belt is horizontally laid below the discharge port of the screening funnel, and the transmission direction of the first conveyor belt is consistent with the length direction of the discharge port;

[0009] A horizontal guard plate assembly includes a first guard plate, a second guard plate, and a third guard plate, wherein the first guard plate is arranged on one side of the first conveyor belt, the second guard plate and the third guard plate are arranged on the other side of the first conveyor belt, and the screening funnel is located between the second guard plate and the first guard plate;

[0010] a vertical guard plate assembly comprising a fourth guard plate and a fifth guard plate arranged in parallel, one end of the fourth guard plate being vertically fixedly connected to the second guard plate, and the fifth guard plate being vertically fixedly connected to the third guard plate, wherein a distance L3 between the fourth guard plate and the fifth guard plate is greater than a distance L1 from the center of gravity of the pipette tip to the tail end thereof and less than a distance L2 from the center of gravity of the pipette tip to the tip end thereof;

[0011] The blowing assembly includes a first blower and a second blower, which are spaced apart on the first guard plate and located on both sides of the vertical guard plate assembly. The first blower is used to blow the pipette tip toward the inside of the second guard plate, and the second blower blows toward the junction of the second guard plate and the fourth guard plate.

[0012] The second conveyor belt is horizontally laid below the vertical guard plate assembly, and the second conveyor belt is vertically connected to the first conveyor belt.

[0013] On the basis of the above technical solution, preferably, the junction between the second guard plate and the fourth guard plate is an arc connection.

[0014] On the basis of the above technical solution, preferably, the arc radius at the intersection of the second guard plate and the fourth guard plate is r, and L3<L2+r.

[0015] On the basis of the above technical solution, preferably, the distance between the second guard plate and the first guard plate is L4, wherein, L=L1+L2.

[0016] On the basis of the above technical solution, preferably, an arc-shaped baffle is provided on the first guard plate, the opening direction of the arc-shaped baffle is toward the second guard plate and the vertical guard plate assembly, and the line connecting the intersection point of the second guard plate and the fourth guard plate and the center point of the arc-shaped baffle is perpendicular to the transmission direction of the first conveyor belt, and the arc-shaped baffle is used to allow the tip of the pipette tip to enter when the tail end of the pipette tip enters the vertical guard plate assembly.

[0017] On the basis of the above technical solution, preferably, the diameter of the arc-shaped baffle is R, wherein R>L2.

[0018] On the basis of the above technical solution, preferably, the first blower and the second blower are respectively located on the first guard plates on both sides of the arc-shaped baffle.

[0019] On the basis of the above technical solution, preferably, the blowing direction of the second blower forms an angle of 45° with the second guard plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) Through the structural optimization of the blowing assembly and the guard plate, and by utilizing the physical characteristics of the pipette tips, the device can accurately screen the transmission direction of the pipette tips. The pipette tips with the tip facing forward continue to be transported forward along the first conveyor belt, while the pipette tips with the tail facing forward are guided to the vertical guard plate assembly and enter the second conveyor belt, thus realizing the automatic screening of the transport direction of the pipette tips. The entire sorting device is simple, fast and efficient, with a simple structure, low cost and high reliability. After being lowered, the pipette tips with different directions can be arranged in order, which provides convenience for subsequent selection and insertion operations.

[0022] (2) The intersection of the second and fourth guard plates is an arc connection. The arc connection provides a smooth transition between the second and fourth guard plates. This structure can reduce the resistance or jamming of the pipette tip at the intersection, thereby ensuring the stability and continuity of the pipette tip when entering between the fourth and fifth guard plates.

[0023] (3) By setting up the arc-shaped baffle, when the tail end of the pipette tip approaches the vertical guard plate assembly, the opening direction of the arc-shaped baffle provides a clear entrance, ensuring that the tip of the pipette tip enters smoothly without deviation. With the guiding function of the arc-shaped baffle, the transmission path of the pipette tip is clearly guided, avoiding misoperation or deviation from the transmission track due to unstable position of the tail end and tip. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the planar structure of the pipette tip arrangement device disclosed in the present utility model;

[0026] Figure 2 This is a schematic structural diagram of the pipette tip disclosed in the present utility model;

[0027] Figure 3 This is a front view of the pipette tip arrangement device disclosed in the present utility model;

[0028] Figure 4 This is a left side view of the pipette tip arrangement device disclosed in the present utility model;

[0029] Reference numerals:

[0030] 1. Screening funnel; 2. Pipette tip; 3. First conveyor belt; 4. Horizontal guard plate assembly; 41. First guard plate; 42. Second guard plate; 43. Third guard plate; 5. Vertical guard plate assembly; 51. Fourth guard plate; 52. Fifth guard plate; 6. Second conveyor belt; 7. Blowing assembly; 71. First blower; 72. Second blower; 8. Arc baffle. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] like Figure 1 As shown, combined Figure 2-4 The embodiment of the utility model discloses a device for arranging pipette tips 2, including a screening funnel 1, a first conveyor belt 3, a horizontal guard plate assembly 4, a second conveyor belt 6 and a blowing assembly 7.

[0033] Among them, the screening funnel 1 is used to lower the long conical structure of the pipette tip 2, and the first conveyor belt 3 is horizontally laid below the discharge port of the screening funnel 1. The transmission direction of the first conveyor belt 3 is consistent with the length direction of the discharge port.

[0034] In this embodiment, the screening funnel 1 is used to lower the pipette tips 2 onto the first conveyor belt 3, where they are randomly positioned, either with the tip facing forward or the tail facing forward. The first conveyor belt 3 carries the pipette tips 2 and transports them forward. The screening funnel 1 is equipped with a vibration source to achieve low-amplitude, high-frequency vibrations, which release the pipette tips 2 one by one through the discharge port. A support frame can be provided on the screening funnel 1 to support it, allowing it to be suspended upstream of the first conveyor belt 3, located in the middle of the conveyor belt's transport area. The transmission structure of the first conveyor belt 3 is conventional.

[0035] The horizontal guard plate assembly 4 is used to limit the transmission posture of the pipette tip 2 on the first conveyor belt 3 to prevent the pipette tip 2 from sliding off the first conveyor belt 3.

[0036] The first conveyor belt 3 includes a first guard plate 41, a second guard plate 42, and a third guard plate 43. The first guard plate 41 is arranged on one side of the first conveyor belt 3, and the second guard plate 42 and the third guard plate 43 are arranged on the other side of the first conveyor belt 3. The screening funnel 1 is located between the second guard plate 42 and the first guard plate 41. The second guard plate 42 and the third guard plate 43 are arranged at intervals to mount the vertical guard plate assembly 5 and the second conveyor belt 6, thereby achieving the transmission direction screening of the pipette tips 2 at the interval between the second guard plate 42 and the third guard plate 43.

[0037] The vertical guard plate assembly 5 includes a fourth guard plate 51 and a fifth guard plate 52 arranged in parallel. One end of the fourth guard plate 51 is vertically fixedly connected to the second guard plate 42, and the fifth guard plate 52 is vertically fixedly connected to the third guard plate 43. The width L3 of the fourth guard plate 51 and the fifth guard plate 52 is greater than the distance L1 from the center of gravity of the pipette tip 2 to its tail end, and less than the distance L2 from the center of gravity of the pipette tip 2 to its tip; the second conveyor belt 6 is horizontally laid under the vertical guard plate assembly 5, and the second conveyor belt 6 is vertically docked with the first conveyor belt 3.

[0038] The blowing assembly 7 includes a first blower 71 and a second blower 72, which are arranged at intervals on the first guard plate 41 and located on both sides of the vertical guard plate assembly 5. The first blower 71 is used to blow the pipette tip 2 toward the inner side of the second guard plate 42, so that the pipette tip 2 is transported along the inner wall of the second guard plate 42 on the first conveyor belt 3, so that when it is transported to the second guard plate 42, the blowing direction of the second blower 72 is toward the junction of the second guard plate 42 and the fourth guard plate 51.

[0039] By arranging a vertical guard plate assembly 5 at the interval between the second guard plate 42 and the third guard plate 43 and controlling the center of gravity, the pipette tip 2 with the tip facing forward or the tail facing forward can produce different transmission effects in the guard plate area:

[0040] When the pipette tip 2 is transported with its tip facing forward, and its center of gravity passes the junction of the second guard plate 42 and the fourth guard plate 51, the distance L3 between the fourth guard plate 51 and the fifth guard plate 52 is less than the distance L2 between the center of gravity and the tip of the pipette tip 2. Therefore, the portion of the pipette tip 2 from its center of gravity to its tip cannot easily enter the vertical guard plate assembly 5 because the distance between the guard plates is insufficient to accommodate this portion. Therefore, the pipette tip 2 does not enter between the fourth guard plate 51 and the fifth guard plate 52 and continues to be transported forward along the first conveyor belt 3.

[0041] Furthermore, the second blower 72 blows air toward the intersection of the second guard plate 42 and the fourth guard plate 51. With the tip facing forward, due to the thinner tip of the pipette tip 2 and the smaller contact area of ​​the wind from the second blower 72 at the tip, the wind's interference with the tip is minimal. This prevents the pipette tip 2 from being blown into the vertical guard plate assembly 5 when its center of gravity passes the guard plate intersection, allowing it to continue forward along the first conveyor belt 3, maintaining its tip facing forward.

[0042] When the tail end of the pipette tip 2 faces forward during the transmission process, when the center of gravity of the pipette tip 2 passes through the junction of the second guard plate 42 and the fourth guard plate 51, because the distance L3 between the fourth guard plate 51 and the fifth guard plate 52 is greater than the distance L1 from the center of gravity of the pipette tip 2 to its tail end, this means that when the tail end faces forward, the center of gravity and the tail end of the pipette tip 2 have enough space to enter the guard plate assembly, so the tail end enters the vertical guard plate assembly 5 and is transmitted along the second conveyor belt 6.

[0043] In addition, the blowing force of the second blower 72 has a larger contact surface and stronger wind force at the tail end. Due to the larger tail end and wider wind force contact surface, the tail end of the pipette tip 2 is affected by the greater wind force, and the tail end is therefore guided into the vertical guard plate assembly 5 and onto the second conveyor belt 6 for transmission.

[0044] During the transmission process, the pipette tip 2 with the tip facing forward is avoided from entering the vertical guard plate assembly 5 due to the precise control of the guard plate spacing and the effect of wind force, thereby keeping the tip facing forward and continuing to be transported forward. This design ensures that the pipette tip 2 with the tip facing forward is not subject to excessive interference and can be smoothly transmitted. The pipette tip 2 with the tail end facing forward can be blown into the vertical guard plate assembly 5 and enter the second conveyor belt 6 due to its larger wind-exposed area and the setting of the guard plate spacing. In this way, the device can effectively distinguish between the pipette tips 2 with the tip facing forward and the pipette tips with the tail end facing forward, and transmit them respectively along different paths.

[0045] By optimizing the structure of the blower assembly 7 and the guard plate, and utilizing the physical characteristics of the pipette tips 2, the device can accurately screen the transport direction of the pipette tips 2. Tips 2 with their tips facing forward continue to be transported along the first conveyor belt 3, while tips 2 with their tails facing forward are guided to the vertical guard plate assembly 5 and onto the second conveyor belt 6, achieving automated screening of the transport direction of the pipette tips 2. The entire sorting device is simple, fast, and efficient, with a simple structure, low cost, and high reliability. After being lowered, pipette tips with different directions can be arranged in an orderly manner, facilitating subsequent selection and insertion operations.

[0046] In some preferred embodiments, the intersection of the second guard plate 42 and the fourth guard plate 51 is an arc connection, and the arc connection provides a smooth transition at the intersection of the second guard plate 42 and the fourth guard plate 51. This structure can reduce resistance or jamming of the pipette tip 2 at the intersection, thereby ensuring the stability and continuity of the pipette tip 2 when entering between the fourth guard plate 51 and the fifth guard plate 52.

[0047] Specifically, when the tip or tail end of the pipette tip 2 passes through the intersection of the second guard plate 42 and the fourth guard plate 51, the arc connection can play a role in diversion, so that the pipette tip 2 can continue to transmit more naturally when the center of gravity passes by, and will not be subject to additional obstructions due to sharp corners or abrupt connections. For the pipette tip 2 with the tip facing forward, the arc connection can effectively reduce the friction of the tip at the intersection, thereby maintaining its forward momentum. For the pipette tip 2 with the tail end facing forward, the arc design can also ensure that when the tail end is subjected to strong winds from a hair dryer, it can be more smoothly guided into the vertical guard plate assembly 5 to avoid getting stuck or getting off track.

[0048] Due to the presence of the arc angle, when the pipette tip 2 is transferred to the upper end point of the arc angle, its center of gravity may be close to the upper edge of the guard plate. In this case, the distance L2 from the center of gravity to the tip falls exactly between the fourth guard plate 51 and the fifth guard plate 52. Under the action of the second blower 72, the pipette tip 2 is forced forward. At this time, the center of gravity and the arc angle position are not effectively supported. The tip of the pipette tip 2 may deviate into the gap between the fourth and fifth guard plates 52. Due to the inclined characteristics of the arc, gravity may draw the tip between the fourth and fifth guard plates 52, further increasing the instability of the pipette tip 2 during transfer.

[0049] To this end, the solution adopted in this embodiment is to set L3 < L2 + r, wherein the arc radius at the intersection of the second guard plate 42 and the fourth guard plate 51 is r. This improvement is equivalent to further reducing the spacing L3 between the fourth and fifth guard plates 52, so that even if the pipette tip 2 is tilted or pushed during the blowing process, its tip will not be inserted into the guard plate gap. Reducing the size of L3 ensures that even under the dual effects of blowing and tilting, the tip of the pipette tip 2 cannot be horizontally inserted between the fourth and fifth guard plates 52, thereby ensuring that when the tip of the pipette tip 2 faces forward, it will smoothly pass over the vertical guard plate assembly 5, thereby entering between the third guard plate 43 and the first guard plate 41 and continuing to be transported along the first conveyor belt 3.

[0050] As some preferred embodiments, the distance between the second guard plate 42 and the first guard plate 41 is L4, wherein, L = L1 + L2. When the tail end of the pipette tip 2 faces forward and the center of gravity of the pipette tip 2 is at a 45° angle where the second guard plate 42 and the fourth guard plate 51 intersect, the distance L4 between the second guard plate 42 and the first guard plate 41 is the smallest. According to the Pythagorean theorem, L4 is at its smallest at this time, and L4 cannot exceed the total length of the pipette tip 2 at its largest.

[0051] As some preferred embodiments, an arc-shaped baffle 8 is provided on the first guard plate 41, and the opening direction of the arc-shaped baffle 8 is toward the second guard plate 42 and the vertical guard plate assembly 5, and the line connecting the intersection point of the second guard plate 42 and the fourth guard plate 51 and the center point of the arc-shaped baffle 8 is perpendicular to the conveying direction of the first conveyor belt 3. The arc-shaped baffle 8 is used to allow the tip of the pipette tip 2 to enter when the tail end of the pipette tip 2 enters the vertical guard plate assembly 5.

[0052] By adopting the above technical solution, when the tail end of the pipette tip 2 approaches the vertical guard plate assembly 5, the opening direction of the arc-shaped baffle 8 provides a clear entrance, ensuring that the tip of the pipette tip 2 enters smoothly without deviation. With the guiding function of the arc-shaped baffle 8, the transmission path of the pipette tip 2 is clearly guided, avoiding misoperation or deviation from the transmission track due to unstable position of the tail end and the tip.

[0053] Preferably, the diameter of the curved baffle 8 is R, where R>L2. This provides ample space within the curved baffle 8, ensuring that the tip of the pipette tip 2 can pass smoothly through the interior of the curved baffle 8 without spatial constraints. This design reduces the risk of jamming or obstruction due to insufficient space. Due to the large diameter of the curved baffle 8, even if the pipette tip 2 deviates or tilts at a certain angle during transfer, it can still be guided by the curved baffle 8, increasing the tolerance of the transfer process.

[0054] Preferably, the first blower 71 and the second blower 72 are respectively located on the first guard plate 41 on both sides of the arc-shaped baffle 8. Specifically, the first blower 71 is close to the arc-shaped baffle 8. In this way, when the pipette tip 2 is in the process of being transported, before it approaches the junction of the second guard plate 42 and the fourth guard plate 51, it is first blown by the wind of the first blower 71, so that the pipette tip 2 is transported forward along the second guard plate 42, so that when the pipette tip 2 is transported along the second guard plate 42, its center of gravity can contact the junction of the second guard plate 42 and the fourth guard plate 51, thereby ensuring the stability and accuracy of the pipette tip 2 when passing through the key position, thereby facilitating the reversal of the transport direction of the pipette tip 2.

[0055] The second blower 72 is located on the first guard plate 41 on the other side of the arc-shaped baffle 8, and can blow air in time at the junction of the second guard plate 42 and the fourth guard plate 51, so that when the center of gravity of the pipette tip 2 passes through the above-mentioned junction and the tail end of the pipette tip 2 faces forward, it can smoothly turn into the vertical guard plate assembly 5, thereby smoothly entering the second conveyor belt 6.

[0056] The blowing direction of the second blower 72 forms a 45° angle with the second guard plate 42. By properly directing the wind, the deviation and error of the pipette tip 2 at the junction are reduced, ensuring the stability of the transmission path. By setting this angle, the wind can effectively guide the pipette tip 2 to make a precise turn at the junction, ensuring that the pipette tip 2 can smoothly enter the vertical guard plate assembly 5 when the tail end of the pipette tip 2 is facing forward.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipette tip arrangement device, characterized in that: include: A screening funnel (1) is used to lower a pipette tip (2) having a long conical structure; A first conveyor belt (3) is horizontally laid below the discharge port of the screening funnel (1), and the transmission direction of the first conveyor belt (3) is consistent with the length direction of the discharge port; A horizontal guard plate assembly (4) includes a first guard plate (41), a second guard plate (42) and a third guard plate (43), wherein the first guard plate (41) is arranged on one side of the first conveyor belt (3), the second guard plate (42) and the third guard plate (43) are arranged on the other side of the first conveyor belt (3), and the screening funnel (1) is located between the second guard plate (42) and the first guard plate (41); A vertical guard plate assembly (5) includes a fourth guard plate (51) and a fifth guard plate (52) arranged in parallel, one end of the fourth guard plate (51) being vertically fixedly connected to the second guard plate (42), and the fifth guard plate (52) being vertically fixedly connected to the third guard plate (43), and a width L3 of the fourth guard plate (51) and the fifth guard plate (52) being greater than a distance L1 from the center of gravity of the pipette tip (2) to its tail end, and less than a distance L2 from the center of gravity of the pipette tip (2) to its tip end; A blowing assembly (7) comprising a first blower (71) and a second blower (72), which are arranged on the first guard plate (41) at intervals and located on both sides of the vertical guard plate assembly (5), the first blower (71) being used to blow the pipette tip (2) toward the inner side of the second guard plate (42), and the blowing direction of the second blower (72) being toward the junction of the second guard plate (42) and the fourth guard plate (51); The second conveyor belt (6) is horizontally laid below the vertical guard plate assembly (5), and the second conveyor belt (6) is vertically connected to the first conveyor belt (3).

2. The pipette tip arrangement device according to claim 1, wherein: The intersection of the second guard plate (42) and the fourth guard plate (51) is an arc connection.

3. The pipette tip arrangement device according to claim 2, wherein: The arc radius at the intersection of the second guard plate (42) and the fourth guard plate (51) is r, and L3 is less than L2+r.

4. The pipette tip arrangement device according to any one of claims 1 to 3, wherein: The distance between the second guard plate (42) and the first guard plate (41) is L4, wherein, L=L1+L2.

5. The pipette tip arrangement device according to claim 4, wherein: An arc-shaped baffle (8) is provided on the first guard plate (41), the opening direction of the arc-shaped baffle (8) is toward the second guard plate (42) and the vertical guard plate assembly (5), and the line connecting the intersection point of the second guard plate (42) and the fourth guard plate (51) and the center point of the arc-shaped baffle (8) is perpendicular to the conveying direction of the first conveyor belt (3), and the arc-shaped baffle (8) is used for allowing the tip of the pipette tip (2) to enter when the tail end of the pipette tip (2) enters the vertical guard plate assembly (5).

6. The pipette tip arrangement device according to claim 5, wherein: The diameter of the arc-shaped baffle (8) is R, wherein R>L2.

7. The pipette tip arrangement device according to claim 5, wherein: The first blower (71) and the second blower (72) are respectively located on the first guard plate (41) on both sides of the arc-shaped baffle (8).

8. The pipette tip arrangement device according to claim 7, wherein: The blowing direction of the second blower (72) forms an angle of 45° with the second guard plate (42).

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