CN220071697U - Finishing device of pipetting gun head - Google Patents

Abstract

The utility model discloses a finishing device of a pipette tip, which is used for finishing the pipette tip of a screening funnel which is put down, wherein the pipette tip is of a long conical structure, the device comprises a conveying belt, a screening notch and a vertical channel, the conveying belt is horizontally laid under a lowering port of the screening funnel, the trend of the conveying belt is consistent with that of the lowering port, and the lowering port is positioned in front of the conveying belt; the middle part of conveyer belt is seted up screening breach, vertical passageway dock in under the screening breach, screening breach's width L1 is less than the focus of liquid-transfering gun head is to its tail end distance L2, makes drop to on the conveyer belt and be the tilting gesture the liquid-transfering gun head moves to during the screening breach, be vertical drop entering in the vertical passageway. The utility model is matched with the screening funnel to be used, and the pipette tips with different inclinations can be orderly arranged so as to facilitate the selection and insertion operation.

Description

Finishing device of pipetting gun head

Technical Field

The utility model belongs to the technical field of pipette tip arrangement, and particularly relates to an arrangement device of pipette tips.

Background

Pipetting guns and pipette tips are widely used in chemical and biological production experiments to quantitatively aspirate, transfer, dilute and the like various liquid reagents and samples. The pipette tip is matched with a pipette, the common specification is 20-300ul, 100-1000ul, 1000-5000ul or other measuring ranges, the matched pipette tip is slightly increased in shape according to the difference of the maximum measuring ranges, the conventional pipette tip is of a long conical hollow structure as shown in fig. 5, and the conventional pipette tip is made of plastic and has a smooth surface.

However, in the process of producing or selling the pipette tips, the pipette tips are mostly in bulk in plastic bags, and laboratory staff needs to manually insert the pipette tips into a pipette box for disinfection for standby, so that factors such as large selection and insertion quantity, long time, easiness in introducing pollution sources in the selection and insertion process and the like seriously influence the safety and efficiency of the pipette tips.

Therefore, a pipette tip arranging device needs to be developed, which is convenient for factories or laboratories to arrange pipette tips, and further improves the safety and efficiency of experiments.

Disclosure of Invention

The utility model aims to provide a sorting device for pipette tips, which is matched with a screening funnel to be used for orderly arranging pipette tips with different inclinations so as to facilitate the selection and insertion operation.

The technical scheme adopted by the utility model for solving the technical problems is that a liquid-transferring gun head arranging device is provided, which is used for arranging a liquid-transferring gun head of a screening funnel, wherein the liquid-transferring gun head is in a long conical structure, the device comprises a conveying belt, a screening notch and a vertical channel, the conveying belt is horizontally laid below a descending port of the screening funnel, the trend of the conveying belt is consistent with that of the descending port, and the descending port is positioned in front of the conveying belt; the middle part of conveyer belt is seted up screening breach, vertical passageway dock in under the screening breach, screening breach's width L1 is less than the focus of liquid-transfering gun head is to its tail end distance L2, makes drop to on the conveyer belt and be the tilting gesture the liquid-transfering gun head moves to during the screening breach, be vertical drop entering in the vertical passageway.

Further, the rear end bilateral symmetry of conveyer belt sets up and is used for receiving and leading the liquid-transfering gun head is the curved guide board of single row operation, both sides minimum interval between the guide board is greater than the maximum diameter of liquid-transfering gun head.

Further, the conveyor belt comprises a conveyor belt and an axial belt, and the joint of the conveyor belt and the axial belt is provided with the screening notch; the conveyor belt is collinear with the axial belt and of equal height.

Further, the conveyor belt is located upstream of the screening gap and interfaces with the screening hopper, and the axial belt is located downstream of the screening gap.

Further, the distance L3 from the center of gravity of the pipette tip to the front end of the pipette tip is greater than the distance L2 from the center of gravity of the pipette tip to the tail end of the pipette tip, so that when the pipette tip moves to the screening gap in an inclined state on the conveyor belt, the tail end of the pipette tip falls into the screening gap first; the width L1 of the screening notch is larger than the maximum diameter of the pipette tip.

Further, when the inclination angle of the pipette tip relative to the trend of the conveyor belt is larger than 20 degrees, the pipette tip falls into the screening notch.

An inclination angle of more than 20 ° is a preferred embodiment, defined according to the guiding limit of the guiding plate provided at the rear end of the conveyor belt, and the application range of the inclination angle should be corrected when the guiding limit of the guiding plate is changed.

Further, the butt joint ends of the conveyor belt and the axial belt are arranged at the screening notch, and a gap reserved between the butt joint ends of the conveyor belt and the axial belt is the screening notch.

Further, the butt joint end comprises a thin shaft and a steering shaft, wherein the thin shaft is sleeved in the driving belt and is positioned above the driving belt, so that the upper surface of the driving belt is in a horizontal state; the steering shaft is far away from the thin shaft and positioned below the thin shaft, and presses down the driving belt, so that the upper end of the butt joint end extends forwards; the width between the upper end of the butt-joint end of the conveying belt and the upper end of the butt-joint end of the axial belt is the width of the screening notch.

Further, the vertical channel is in butt joint with the right lower part of the screening notch, the thickness of an opening at the upper end of the vertical channel is larger than the width of the screening notch, the length of an opening at the upper end of the vertical channel is larger than the width of the conveyor belt, the inner cavity structure of the vertical channel in the vertical direction gradually converges from top to bottom to be reduced, and the posture of the pipette tip falling into the vertical channel is guided to be in a vertical state; the diameter of the inner cavity at the lower part of the vertical channel is larger than the maximum diameter of the liquid-transferring gun head, so that the liquid-transferring gun head slides downwards in a vertical state.

Preferably, a pressure release small hole can be formed in the vertical channel, so that pressure change in the vertical channel when the pipette tip slides downwards is balanced. Or the lower part of the vertical channel is arranged in a mode of spacing rib interval surrounding, so that the pipette tip can slide down smoothly.

Furthermore, guard plates are arranged on two sides of the conveyor belt, each guard plate comprises a baffle plate and an arc plate, and the baffle plates are blocked on two sides of the conveyor belt and used for stopping the pipette tips from falling off; an arc plate bent towards the conveyor belt is arranged above the baffle plate.

Preferably, the lower surface of the baffle is lower than the upper surface of the conveyor belt, the upper surface of the baffle is higher than the upper surface of the conveyor belt, and the inner side end surface of the baffle is close to the side end of the conveyor belt; the arc plate is arranged on the upper surface of the baffle plate, extends upwards and bends towards the direction of the conveying belt to form an arc shape so as to prevent the pipette tip from falling off.

The beneficial effects of the utility model are as follows:

according to the arrangement device of the pipette tips, which is provided by the utility model, the gravity center offset characteristic brought by the structure of the pipette tips is utilized for arrangement, so that the pipette tips which are different in inclination after being lowered by a screening funnel can be effectively arranged, the pipette tips are orderly arranged, and convenience is provided for subsequent selecting and inserting operations.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model. In the drawings, like reference numerals are used to identify like elements. The drawings, which are included in the description, illustrate some, but not all embodiments of the utility model. Other figures can be derived from these figures by one of ordinary skill in the art without undue effort.

FIG. 1 is a side view of a finishing device for pipette tips according to an embodiment of the present utility model;

FIG. 2 is a schematic layout view of a guard plate of a finishing device for a pipette tip according to an embodiment of the present utility model;

FIG. 3 is a side view of a vertical channel of a finishing device for a pipette tip according to an embodiment of the present utility model;

FIG. 4 is a block diagram of the direction A-A in FIG. 3 in accordance with an embodiment of the present utility model;

FIG. 5 is a block diagram of a pipette tip according to an embodiment of the present utility model;

FIG. 6 is a schematic side view of a pipette tip passing through a screening gap;

FIG. 7 is a schematic side view of the heavier end of the pipette tip falling into the screening gap;

FIG. 8 is a schematic side view of a pipette tip falling into a vertical channel;

FIG. 9 is a schematic top view of a pipette tip passing through a screening gap;

FIG. 10 is a top view of a pipette tip with a smaller degree of tilt through a screening gap;

fig. 11 is a schematic top view of a pipette tip with a large inclination through a screening gap.

In the figure: 1. a conveyor belt; 2. an axial belt; 3. screening the notch; 4. a vertical channel; 5. pipetting gun heads; 9. screening a funnel; 12. a guard board; 21. and a guide plate.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model and the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without undue effort. The term "design azimuth" merely means a relative positional relationship between the respective members, not an absolute positional relationship.

In the embodiment of the utility model, the screening hopper 9 is provided with a vibration source to realize low-amplitude high-frequency vibration, and the pipette tips 5 are released one by one through the lowering ports under the action of the vibration source. The lower part of the screening hopper 9 can be provided with a supporting rod for supporting, so that the screening hopper is suspended at the upstream of the conveyor belt and positioned at the middle position of the conveying area of the conveyor belt, and the descending port is consistent with the trend of the conveyor belt.

When the transfer gun head 5 is released by the screening funnel 9, the transfer gun head 5 collides with a running conveyor belt, so that the posture of the transfer gun head 5 is changed, and the subsequent inserting operation is not facilitated; meanwhile, for the screening funnel 9, the screening performance of the two ends of the pipette tip 5 is insufficient, the consistency of the tips of the lowered pipette tip 5 cannot be completely ensured, and the efficiency of the selecting and inserting operation can be affected.

The embodiment of the utility model provides a finishing device of a pipette tip, which is used for finishing the pipette tip 5 of a screening funnel 9 which is placed down, referring to fig. 1-11, the pipette tip 5 is in a long conical structure and mainly comprises a conveying belt, a screening notch 3 and a vertical channel 4, the conveying belt is horizontally laid below a placing port of the screening funnel 9, the trend of the conveying belt is consistent with that of the placing port, and the placing port is positioned in front of the conveying belt; the screening gap 3 is offered at the middle part of conveyer belt, and vertical passageway 4 butt joint is under the screening gap 3, and the width L1 of screening gap 3 is less than the focus of liquid-transfering gun head 5 to its tail end distance L2 for when dropping to the conveyer belt and being the liquid-transfering gun head 5 of slope gesture operation to screening gap 3, be in vertical entering vertical passageway 4 that drops.

Referring to fig. 5, the pipette tip 5 has a hollow structure, which may be made of transparent plastic, and has elastic recovery effect, so as to realize squeezing, sucking and squeezing transfer functions on liquid. Because the whole body of the device is in a long conical structure, the front end and the rear end are both provided with openings, the front end is a thin opening (tip), the rear end is a thick opening (tail end), and the gravity center of the device is located at the rear.

Based on the gravity center offset effect of the liquid-transferring gun head 5, the utility model designs a screening notch 3 with a certain width, divides the liquid-transferring gun head 5 with larger inclination degree and smaller inclination degree, and can directly correct the liquid-transferring gun head with smaller inclination degree through a guide plate 21 arranged at the rear end of the conveyor belt so as to be in a single-row straight line state; the falling treatment can be carried out through the screening notch 3 with larger inclination degree so as to lead the screening notch to be in a vertical state. The rear ends of the two processing modes can be provided with an inserting selecting operation point, and the pipette tips after the whole processing can be directly inserted into the box.

In the embodiment of the utility model, the final posture of the pipette tip 5 after being sorted is distinguished, a channel with smaller inclination is called an axial direction, and a channel with larger inclination is placed in a vertical direction.

In a particular embodiment, the conveyor belt may comprise a conveyor belt 1, an axial belt 2, the axial belt 2 and the conveyor belt 1 operating in a pattern consistent with the conveyor belt; the two are respectively arranged at two sides of the screening gap 3, wherein the conveying belt 1 is used for butting the screening hopper 9 and conveying the pipette tips 5 to the screening gap 3; the axial belt 2 is an axial channel, and a guide plate 21 can be additionally arranged at the rear end of the axial belt 2 to correct the posture of the pipette tip 5 with smaller inclination degree, and the pipette tips are operated in a single row and are orderly arranged.

Specifically, the rear end of the conveyor belt (i.e., the rear end of the axial belt 2) is symmetrically provided with arc-shaped guide plates 21 for converging and guiding the pipette tips 5 to run in a single row, as shown in fig. 9-11, the minimum distance between the guide plates 21 on two sides should be slightly larger than the maximum diameter of the pipette tips 5, so that the pipette tips 5 run in a single row after being regulated, and sequentially run backward in sequence.

It should be clear that the width L1 of the screening gap 3 is smaller than the distance L2 from the center of gravity of the pipette tip 5 to the tail end thereof, and the width L1 of the screening gap 3 is larger than the maximum diameter of the pipette tip 5, whereby the pipette tip 5 with a large inclination can be smoothly dropped into the screening gap 3.

When the liquid-transferring gun head 5 below the screening funnel 9 falls onto the conveyor belt and runs to the screening notch 3 in an inclined posture, the liquid-transferring gun head 5 can vertically fall into the vertical channel 4. It can be understood that the distance L3 from the center of gravity of the pipette tip 5 to the front end thereof is greater than the distance L2 from the center of gravity of the pipette tip 5 to the rear end thereof, so that when the pipette tip 5 moves to the screening gap 3 in an inclined state on the conveyor belt, the rear end of the pipette tip 5 falls into the screening gap 3 first.

Whether the tip of the pipette tip 5 is directed forward or backward, when the pipette tip 5 moves to the screening gap 3, the tail end falls into the screening gap 3 first, so that the upward ordering of the tips is stably obtained.

In a specific embodiment, the pipette tip 5 falls into the screening gap 3 when the inclination angle of the pipette tip 5 with respect to the direction of the conveyor belt is greater than 20 °. As shown in fig. 10, when the inclination angle β is smaller than 20 °, the pipette tip 5 can pass through the screening gap 3; as shown in fig. 11, when the inclined angle α is greater than 20 °, the pipette tip 5 cannot pass through the screening gap 3, and the rear end falls into the screen gap at first.

In the present utility model, an inclination angle of more than 20 ° is a preferred embodiment, which is defined according to the guide limit of the guide plate 21 provided at the rear end of the conveyor belt, and the application range of the inclination angle should be corrected when the guide limit of the guide plate 21 is changed.

It will be appreciated that when the guide plate 21 is guided, due to uncertainty of the inclination angle of the pipette tip 5, the pipette tip may be inclined to the left or to the right, and the position of the pipette tip 5 is not fixed, so that the guiding difficulty of the guide plate 21 is increased, and in order to avoid blockage of the port of the guide plate 21, the limit inclination angle should be set as small as possible (the limit inclination angle is 20 ° as defined above), but is limited by practical application situations of the screening gap 3 and consideration of running inertia, and the limit inclination angle can be appropriately increased to ensure that the pipette tip 5 can stably fall into the screening gap 3.

It should be noted that, in practical application, the limiting inclination angle can be adjusted according to the actual design scene of the screening gap 3, so as to adapt to different pipette tips 5.

In the embodiment of the utility model, a conveying application scene of a conveyor belt is adopted, which leads to larger instability of the size of the screening gap 3, so that the utility model designs the butt joint ports for the conveyor belt 1 and the axial belt 2 to eliminate the instability, and the size of the screening gap 3 is as stable and effective as possible.

In a specific embodiment, the conveyor belt comprises a conveyor belt 1 and an axial belt 2, and a screening notch 3 is formed at the joint of the conveyor belt 1 and the axial belt 2; the conveyor belt 1 is collinear with the axial belt 2 and of equal height.

The layout of the conveyor belt may be: the conveyer belt 1 is positioned at the upstream of the screening gap 3, is in butt joint with the screening funnel 9, receives the dropped pipette tips 5 and conveys the pipette tips to the screening gap 3; the axial belt 2 is located downstream of the screening gap 3 for transporting the pipette tips 5 in an axial state (i.e. considered to be in an axial state with a small degree of inclination).

It will be appreciated that at the screening gap 3, the pipette tips 5 with the greater degree of inclination fall into the vertical channel 4, resulting in pipette tips 5 on the axial belt 2 that are both in an axial state.

The specific form of the docking port may be: the conveyor belt 1 and the axial belt 2 are respectively provided with a butt joint end at the screening gap 3, are spliced in a serial mode, and are provided with the screening gap 3 in the middle; the gap reserved between the butt joint end of the conveyer belt 1 and the butt joint end of the axial belt 2 is the screening gap 3.

Specifically, the butt joint end can comprise a thin shaft and a steering shaft, wherein the thin shaft is sleeved in the transmission belt and is positioned above the transmission belt, so that the whole upper surface of the transmission belt is in a horizontal state; the steering shaft is far away from the thin shaft and is positioned below the thin shaft to press the transmission belt downwards, so that the upper end of the butt end extends forwards, as shown in fig. 6-8; the width between the upper end of the abutting end of the conveying belt 1 and the upper end of the abutting end of the axial belt 2 is the width of the screening gap 3.

In the embodiment of the utility model, the vertical channel 4 is butted under the screening gap 3, the thickness of the upper opening of the vertical channel 4 is larger than the width of the screening gap 3, the length of the upper opening is larger than the width of the conveyor belt, the inner cavity structure of the vertical channel gradually converges from top to bottom in the vertical direction, and the posture of the pipetting gun head 5 which falls into the vertical channel is guided to be in a vertical state; the diameter of the inner cavity at the lower part of the vertical channel 4 is larger than the maximum diameter of the liquid-transferring gun head 5, so that the liquid-transferring gun head 5 slides downwards in a vertical state.

In a specific embodiment, the upper port of the vertical channel 4 may be rectangular, the upper structure is transited from a square tube to a circular tube, the inner cavity structure gradually reduces to be circular, and the vertical falling posture of the displacement-limiting liquid gun head 5 is gradually guided.

Referring to fig. 3, a side view of a square tube structure is shown, the left and right sides gradually converge inwards to guide the front and rear postures of the pipette tips 5 falling from the screening gap 3; referring to fig. 4, in a front view of the square tube structure, the front and rear sides of the transition region gradually converge inwards to guide the left and right postures, and finally fall into the lower round tube to slide in a vertical state.

Preferably, a pressure release small hole can be formed in the vertical channel 4, so that pressure change in the vertical channel 4 when the pipette tip slides downwards is balanced. Or the lower part (circular tube part) of the vertical channel 4 is arranged in a mode of spacing rib interval surrounding, so that the pipette tip 5 can slide down smoothly.

In the embodiment of the utility model, in order to avoid dropping of the pipette tips 5, guard plates 12 may be arranged on both sides of the conveyor belt, as shown in fig. 2, the guard plates 12 are long, and the upper ports of the screening gaps 3 and the vertical channels 4 are covered and sealed in a butt joint manner. The guard plate 12 comprises a guard plate and an arc plate, and the guard plate is blocked at two side edges of the conveyor belt and is used for stopping the pipette tips 5 from falling off; an arc plate bent towards the conveyor belt is arranged above the baffle plate.

Preferably, the lower surface of the baffle is lower than the upper surface of the conveyor belt, the upper surface of the baffle is higher than the upper surface of the conveyor belt, and the inner side end surface of the baffle is close to the side end of the conveyor belt; the arc plate is arranged on the upper surface of the baffle plate, extends upwards and bends towards the direction of the conveyor belt to form an arc shape so as to prevent the pipette tip 5 from falling off.

Based on the final posture of the pipette tip 5, two groups of guide rails can be respectively arranged, and the pipette tip 5 in a vertical state and an axial state can be respectively temporarily stored so as to perform inserting operation. The guide rails may be respectively docked to the guide plate 21, the ends of the vertical channel 4.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific examples described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (10)

1. The utility model provides a finishing device of pipette tip, is used for finishing pipette tip (5) that screening funnel (9) were transferred, its characterized in that, pipette tip (5) are long toper structure, the device includes conveyer belt, screening breach (3), vertical passageway (4), the conveyer belt level is laid under the port of transferring of screening funnel (9), and the trend of conveyer belt is unanimous with the trend of port that transfers, transfer port is located the place ahead of conveyer belt; the middle part of conveyer belt is seted up screening breach (3), vertical passageway (4) dock in screening breach (3) under, the width L1 of screening breach (3) is less than the focus of pipetting gun head (5) is to its tail end distance L2, makes drop to on the conveyer belt and be the tilting gesture pipetting gun head (5) moves to when screening breach (3), be vertical drop entering in vertical passageway (4).

2. A handling device for pipette tips according to claim 1, characterized in that the rear end of the conveyor belt is symmetrically provided with arc-shaped guide plates (21) for converging and guiding the pipette tips (5) in a single row, and the minimum distance between the guide plates (21) at the two sides is larger than the maximum diameter of the pipette tips (5).

3. The arranging device of the pipette tips according to claim 1, wherein the conveyor belt comprises a conveyor belt (1) and an axial belt (2), and the joint of the conveyor belt (1) and the axial belt (2) is provided with the screening notch (3); the conveyor belt (1) is collinear and of equal height with the axial belt (2).

4. A handling device for pipette tips according to claim 3, wherein the conveyor belt (1) is located upstream of the screening gap (3) in abutment with the screening funnel (9), and the axial belt (2) is located downstream of the screening gap (3).

5. A handling device for pipette tips according to claim 1, characterized in that the distance L3 from the centre of gravity of the pipette tip (5) to its front end is larger than the distance L2 from the centre of gravity of the pipette tip (5) to its rear end, so that when the pipette tip (5) runs to the screening gap (3) in an inclined state on the conveyor belt, the rear end of the pipette tip (5) falls first into the screening gap (3); the width L1 of the screening notch (3) is larger than the maximum diameter of the pipette tip (5).

6. A handling device for pipette tips according to claim 5, wherein the pipette tips (5) drop into the screening gap (3) when the inclination angle of the pipette tips (5) relative to the direction of travel of the conveyor belt is greater than 20 °.

7. A handling device for pipette tips according to claim 3, wherein the conveyor belt (1) and the axial belt (2) are provided with abutting ends at the screening gap (3), and a gap reserved between the abutting ends of the conveyor belt (1) and the axial belt (2) is the screening gap (3).

8. The arranging device of the pipette tip according to claim 7, wherein the butt joint end comprises a thin shaft and a steering shaft, the thin shaft is sleeved in a transmission belt and is positioned above the transmission belt, so that the upper surface of the transmission belt is in a horizontal state; the steering shaft is far away from the thin shaft and positioned below the thin shaft, and presses down the driving belt, so that the upper end of the butt joint end extends forwards; the width between the upper end of the butt joint end of the conveying belt (1) and the upper end of the butt joint end of the axial belt (2) is the width of the screening notch (3).

9. The arranging device of the pipette tips according to claim 8, wherein the vertical channel (4) is abutted under the screening gap (3), the thickness of an upper opening of the vertical channel (4) is larger than the width of the screening gap (3), the length of an upper opening is larger than the width of the conveyor belt, the inner cavity structure of the vertical channel in the vertical direction gradually reduces from top to bottom, and the posture of the pipette tips (5) falling into the vertical channel is guided to be in a vertical state; the diameter of the inner cavity at the lower part of the vertical channel (4) is larger than the maximum diameter of the liquid-transferring gun head (5), so that the liquid-transferring gun head (5) slides in a vertical state.

10. The arrangement device of the pipette tips according to claim 1, characterized in that both sides of the conveyor belt are provided with guard plates (12), the guard plates (12) comprise baffle plates and arc plates, and the baffle plates are blocked at both sides of the conveyor belt and used for stopping the pipette tips (5) from falling off; an arc plate bent towards the conveyor belt is arranged above the baffle plate.