CN111846379A

CN111846379A - Liquid-transfering gun head sequencing transfer device

Info

Publication number: CN111846379A
Application number: CN202010768710.4A
Authority: CN
Inventors: 彭醒思; 黄坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2020-10-30

Abstract

The invention discloses a sorting and transferring device of pipette tips, which comprises a sorting device and a transferring device, wherein the sorting device comprises a guide plate with a guide groove, a collecting plate with a collecting groove and a support, the head end of the collecting plate is connected with the tail end of the guide plate, the head end of the collecting plate and the tail end of the guide plate are obliquely arranged, the transferring device comprises an annular outer frame, a pipette tip device and a pipette pushing device, the pipette tip device comprises a fixed guide sheet, a driving guide sheet and a driven guide sheet which are in sliding connection with the annular outer frame, a downward extending pipette needle is arranged on the fixed guide sheet and the driven guide sheet, the pipette tip device comprises a push rod and a blocking sheet which are in sliding connection with the annular outer frame, when in use, scattered pipette tips are placed on the guide plate, the pipette tips are orderly arranged in the collecting groove on the collecting plate in a sliding manner along the guide groove, the pipette tips are inserted into the pipette tips below, the push rod is pressed down, the liquid transfer gun head on the taking needle is scraped off by the separation blade, and the transfer is completed.

Description

Liquid-transfering gun head sequencing transfer device

Technical Field

The invention relates to the technical field of transfer of pipette tips, in particular to a sorting and transferring device for pipette tips.

Background

The pipette tip is widely used in biological, medical and chemical experiments and is used for quantitatively transferring solution reagents and has an important effect on controlling the dosage of experimental solution, in practice, newly purchased pipette tips are placed in a packaging bag disorderly, the pipette tips need to be placed in a special box orderly for convenient use, and the work of the part is basically completed manually at present, the pipette tips need to be inserted into the box manually, and in order to avoid pollution in pipetting, the pipette tips need to be discarded after one-time liquid suction and liquid discharge operation, so that in the experiment needing multiple pipetting operations, the usage amount of the pipette tips becomes considerable, and the workload of manually sorting and transferring the pipette tips is increased.

Therefore, how to solve the problem that pipette tips need to be manually ordered and transferred in the prior art becomes a technical problem which needs to be solved urgently by a person skilled in the art.

Disclosure of Invention

The invention aims to provide a pipette tip sequencing and transferring device to solve the problem that pipette tips need to be manually sequenced and transferred in the prior art.

The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a pipette tip sequencing and transferring device, which comprises:

the sorting device comprises a guide plate, a collecting plate and a support, wherein a plurality of guide grooves extending in the front-back direction of the guide plate are formed in the upper surface of the guide plate, the head end of the collecting plate is connected with the bottom of the tail end of the guide plate, a plurality of collecting grooves vertically penetrating through the collecting plate are formed in the collecting plate, the collecting grooves extend in the front-back direction of the collecting plate, each collecting groove corresponds to one guide groove, the width of each collecting groove is larger than the outer diameter of the root of the pipetting gun head and smaller than the diameter of the tail end of the pipetting gun, the support is arranged at the bottoms of the guide plate and the collecting plate, and the height of the support is gradually reduced from the head end of the guide plate to the tail end of the collecting plate;

the transfer device comprises an annular outer frame, a gun taking device and a gun pushing device, wherein the gun taking device and the gun pushing device are arranged on the inner side of the annular outer frame, the gun taking device comprises a fixed guide vane fixedly connected with the inner side of the annular outer frame, a driving guide vane arranged in parallel with the fixed guide vane and a plurality of driven guide vanes arranged between the driving guide vane and the fixed guide vane, the driving guide vane and the driven guide vanes are both in sliding connection with the annular outer frame, the sliding direction is along the direction vertical to the fixed guide vane, the driven guide vane and the driving guide vane are all provided with a plurality of through holes vertically penetrating through the guide vanes, each through hole is internally provided with a downwards extending taking needle, the gun pushing device comprises a blocking piece and a push rod, the push rod is in sliding connection with the annular outer frame along the vertical direction, the blocking piece is arranged below the fixed guide vane and is connected with the bottom end of the push rod, the stopper is provided with a plurality of strip-shaped through grooves extending along the direction perpendicular to the fixed guide sheet along the extending direction of the fixed guide sheet, each row of the stopper corresponds to one strip-shaped through groove, the width of each strip-shaped through groove is larger than the outer diameter of the corresponding needle and smaller than the tail end diameter of the pipette head, and a maximum distance limiting device and a minimum distance limiting device are arranged between the driving guide sheet and the driven guide sheet, between the driven guide sheets and between the driven guide sheet and the fixed guide sheet.

Preferably, the maximum distance limiting device comprises a limiting screw and a limiting ring, the fixed guide vane, the plurality of driven guide vanes and the driving guide vane are respectively provided with the limiting screw along the two ends of the length direction of the fixed guide vane, the outer sides of every two adjacent limiting screws are respectively provided with one limiting ring in a sleeved mode, and the length of each limiting ring is greater than the sum of the diameters of the two limiting screws.

Preferably, the minimum distance limiting device is a detachable spacer pin, and the spacer pin is arranged between the fixed guide vane and the adjacent driven guide vane, between the two driven guide vanes, and between the driving guide vane and the driven guide vane.

Preferably, the top end and the middle part of the needle taking are both provided with blocking limiting structures, and the distance between the two blocking limiting structures is greater than the height of the guide vane.

Preferably, the push rods comprise two pairs, and a handle is arranged between the top ends of each pair of push rods.

Preferably, slide bars are arranged at two ends of the annular outer frame along the length direction of the guide piece, the slide bars extend along the direction perpendicular to the guide piece, slide holes are arranged at two ends of the guide piece along the length direction, the slide bars are arranged in the slide holes in a penetrating mode, and the guide piece can slide along the slide bars.

Preferably, the bottom of the needle is conical.

Preferably, both ends of the active guide vane along the length direction are provided with wrenches for pulling the active guide vane to slide.

Preferably, the left side and the right side of the guide plate are provided with baffle plates extending upwards, and the height of each baffle plate is larger than the diameter of the tail end of the pipette head.

Preferably, the bracket comprises first supporting rods positioned on the left side and the right side of the guide plate and second supporting rods positioned on the left side and the right side of the collecting plate, and the length of each first supporting rod is greater than that of each second supporting rod.

The invention provides a pipette tip sequencing and transferring device, which has the beneficial effects that:

the invention provides a liquid-transfering gun head sorting and transferring device, which comprises a sorting device and a transferring device, wherein the sorting device comprises a guide plate, a collecting plate and a support, and the upper surface of the guide plate is provided with a plurality of guide grooves extending along the front-back direction of the guide plate; the head end of the collecting plate is connected with the bottom of the tail end of the guide plate, a plurality of collecting grooves which penetrate through the collecting plate along the direction vertical to the upper surface of the collecting plate are arranged on the collecting plate, the collecting grooves extend along the front and back direction of the collecting plate, each collecting groove corresponds to one guide groove, the width of each collecting groove is larger than the root diameter of the pipetting gun head and smaller than the tail end diameter of the pipetting gun head, the support is arranged at the bottom of the guide plate and the collecting plate, the height of the support is gradually reduced from the head end of the guide plate to the tail end of the collecting plate, and the height of the head end of the guide plate and the height of the; the transfer device comprises an annular outer frame, a gun taking device and a gun pushing device which are arranged on the inner side of the annular outer frame, wherein the gun taking device comprises a fixed guide vane fixedly connected with the inner side of the annular outer frame, a driving guide vane arranged in parallel with the fixed guide vane and a plurality of driven guide vanes arranged between the driving guide vane and the fixed guide vane, the driving guide vane and the driven guide vanes are both in sliding connection with the annular outer frame, the sliding direction is along the direction vertical to the fixed guide vane, a plurality of through holes along the vertical direction are arranged on the fixed guide vane, the driven guide vane and the driving guide vane, a needle taking extending downwards is arranged in each through hole, the gun pushing device comprises a separation blade and a push rod, the push rod is in sliding connection with the annular outer frame along the vertical direction, the separation blade is positioned below the guide vanes and connected with the bottom end of the push rod, a plurality of strip-shaped through grooves extending along the direction vertical to the fixed guide vane are uniformly arranged on the, when the pipette tip rack is used, the scattered pipette tips are placed on the guide plate, the guide plate is slightly vibrated, the pipette tips enter the guide groove, the axial direction of the pipette tips is along the extending direction of the guide groove, the pipette tips move downwards along the guide groove under vibration due to the inclined downward arrangement of the guide plate, the pipette tips fall onto the collecting plate after moving to the tail end of the guide groove, fall into the collecting groove of the collecting plate, the head ends of the pipette tips downwards penetrate through the collecting groove, the tail end diameter of the pipette tips is larger than the width of the collecting groove, and the pipette tips are erected on the collecting groove, because the collecting plate is arranged obliquely downwards, the pipette tips move downwards along the collecting tank and are arranged orderly, then a minimum distance limiting device with a proper size is selected according to the diameter of the pipette tips, the driving guide sheet is pushed towards the direction close to the fixed guide sheet, the pushing is stopped when the driving guide sheet, the driven guide sheet and the fixed guide sheet are all contacted with the minimum distance limiting device, at the moment, each taking needle respectively corresponds to the pipette tips on the collecting plate, the transfer device is moved downwards, the taking needles are inserted into the pipette tips, the outer side walls of the taking needles are supported at the tail end opening of the pipette tips, then the transfer device is lifted, the pipette tips move together with the transfer device, when the pipette tips reach the upper part of a special box body for placing the pipette tips, the driving guide sheet is moved towards the direction far away from the fixed guide sheet, and the transfer device stops moving when the driving guide sheet and the driven guide sheet move to the maximum distance limited by the maximum distance limiting, the bottom of pipetting gun head corresponds with the hole position of placing on the special box body this moment, puts into the special box body with pipetting gun head, then holds annular frame, promotes the push rod downwards, and the separation blade downstream because the width that leads to the groove is less than the tail end diameter of pipetting gun head, consequently can scrape pipetting gun head from getting the needle when the separation blade downstream, drops in the special box body, accomplishes pipetting gun head's transfer, has replaced the artifical problem of placing pipetting gun head one by one, has promoted transfer efficiency greatly.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a block diagram of a sorting apparatus according to an embodiment of the present invention;

FIG. 2 is a view showing the construction of a transfer apparatus according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating a configuration of an annular outer frame according to an embodiment of the present invention;

FIG. 4 is a block diagram of an active guide vane according to an embodiment of the present invention;

FIG. 5 is a view showing a structure of a driven guide vane according to an embodiment of the present invention;

FIG. 6 is a view showing a structure of a stationary blade according to an embodiment of the present invention;

FIG. 7 is a view showing a structure of a baffle plate according to an embodiment of the present invention;

FIG. 8 is a view of a needle extraction structure according to an embodiment of the present invention;

FIG. 9 is a view of a septum construction shown in an embodiment of the present invention;

FIG. 10 is a view of the configuration of a pipette tip according to an embodiment of the present invention;

FIG. 11 is a diagram illustrating a gun picking process by the transfer device on the sequencing device in accordance with an embodiment of the present invention;

FIG. 12 is a diagram illustrating a process of transferring pipette tips by the transfer device in accordance with an embodiment of the present invention;

FIG. 13 is a diagram illustrating a process of placing pipette tips into a dedicated cassette by the transfer device according to an embodiment of the present invention;

fig. 14 is a schematic view of a pipette tip in a dedicated cassette according to an embodiment of the invention.

In the figure: 1. a guide plate; 2. a collection plate; 3. a guide groove; 4. collecting tank; 5. an annular outer frame; 6. fixing the guide sheet; 7. an active guide vane; 8. a driven guide vane; 9. a through hole; 10. taking a needle; 11. a baffle plate; 12. a push rod; 13. a strip-shaped through groove; 14. a limit screw; 15. a limiting ring; 16. separating needles; 17. a handle; 18. a slide bar; 19. a slide hole; 20. a wrench; 21. a baffle plate; 22. a first support bar; 23. a second support bar; 24. an annular groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.

Referring to fig. 1 to 14, the invention provides a pipette tip sorting and transferring device, which comprises a sorting device and a transferring device, wherein the sorting device comprises a guide plate 1, a collecting plate 2 and a bracket, the upper surface of the guide plate 1 is provided with a plurality of guide grooves 3 extending along the front and back direction of the guide plate 1, the plurality of guide grooves 3 are uniformly distributed along the left and right direction of the guide plate 1, the width of each guide groove 3 can be larger than the diameter of the tail end of the pipette tip, the head end of the collecting plate 2 is connected with the bottom of the tail end of the guide plate 1, the collecting plate 2 and the guide plate 1 can be arranged in parallel, the collecting plate 2 is provided with a plurality of collecting grooves 4 penetrating through the collecting plate 2 along the direction vertical to the upper surface of the collecting plate 2, the collecting grooves 4 extend along the front and back direction of the collecting plate 2 and are uniformly distributed along the left and right direction of the collecting plate 2, each collecting groove 4 corresponds to one guide groove 3, the width, the bracket is arranged at the bottoms of the guide plate 1 and the collecting plate 2, the height of the bracket is gradually reduced from the head end of the guide plate 1 to the tail end of the collecting plate 2, and the head end of the guide plate 1 and the collecting plate 2 on the bracket is higher than the tail end of the guide plate 1 and the collecting plate 2 and is in an inclined state; the transfer device comprises an annular outer frame 5, a gun taking device and a gun pushing device which are arranged on the inner side of the annular outer frame 5, wherein a rectangular through groove can be formed in the annular outer frame 5, the gun taking device is arranged in the rectangular through groove and comprises a fixed guide vane 6 fixedly connected with the inner side of the annular outer frame 5, a driving guide vane 7 arranged in parallel with the fixed guide vane 6 and a plurality of driven guide vanes 8 arranged between the driving guide vane 7 and the fixed guide vane 6, the driving guide vane 7, the fixed guide vane 6 and the driven guide vanes 8 are collectively called guide vanes, the driving guide vane 7 and the driven guide vanes 8 are both in sliding connection with the annular outer frame 5, the sliding direction is along the direction vertical to the fixed guide vane 6, a plurality of through holes 9 along the vertical direction are arranged on the fixed guide vane 6, the driven guide vane 8 and the driving guide vane 7, a needle taking 10 extending downwards is arranged in the through holes 9, the gun pushing device comprises a blocking piece 11 and a push rod 12, the push rod 12 is connected with the annular outer frame 5 in a sliding manner along the vertical direction, the blocking piece 11 is positioned below the guide pieces and connected with the bottom end of the push rod 12, a plurality of strip-shaped through grooves 13 extending along the direction perpendicular to the fixed guide pieces 6 are uniformly arranged on the blocking piece 11 along the extending direction of the fixed guide pieces 6, each row of the taking needles 10 corresponds to one strip-shaped through groove 13, the width of each strip-shaped through groove 13 is larger than the outer diameter of the taking needle 10 and smaller than the diameter of the tail end of the pipetting gun head, a maximum distance limiting device and a minimum distance limiting device are respectively arranged between the driving guide piece 7 and the driven guide piece 8, between the driven guide pieces 8 and the fixed guide pieces 6, when in use, scattered pipetting guns are placed on the guide plate 1, the guide plate 1 is slightly vibrated, the pipetting guns enter the guide grooves and are arranged along the extending direction of the guide grooves along the axial direction of the pipetting guns, because the guide, the pipette tip moves downwards along the guide groove under vibration, after the pipette tip moves to the tail end of the guide groove, the pipette tip falls onto the collecting plate 2 and falls into the collecting groove 4 of the collecting plate 2, the head end of the pipette tip downwards penetrates through the collecting groove 4, the diameter of the tail end of the pipette tip is larger than the width of the collecting groove 4, the pipette tip is erected on the collecting groove 4, as the collecting plate 2 is obliquely downwards arranged, the pipette tips downwards move along the collecting groove 4 and are arranged in order, then, a minimum distance limiting device with a proper size is selected according to the diameter of the pipette tip, the driving guide 7 is pushed towards the direction close to the fixed guide 6, when the driving guide 7, the driven guide 8 and the fixed guide 6 are all contacted with the minimum distance limiting device, the pushing is stopped, at the moment, each taking needle 10 respectively corresponds to the pipette tip on the collecting plate 2, the transferring device is downwards moved, so that the taking needle 10 is inserted into the pipette tip, the outer side wall of the needle 10 is supported at the tail end opening of the pipette head, then the transfer device is lifted, the pipette head moves along with the transfer device, when the pipette head reaches the position above a special box body for placing the pipette head, the driving guide sheet 7 is moved towards the direction far away from the fixed guide sheet 6, the movement is stopped when the driving guide sheet 7 and the driven guide sheet 8 move to the maximum distance limited by the maximum distance limiting device, at the moment, the bottom end of the pipette head corresponds to the position of a placing hole on the special box body, the pipette head is placed into the special box body, then the annular outer frame 5 is held, the push rod 12 is pushed downwards, the blocking sheet 11 moves downwards, and as the width of the through groove is smaller than the tail end diameter of the pipette head, the pipette head can be scraped from the needle 10 when the blocking sheet 11 moves downwards and falls into the special box body, the transfer of the pipette head is completed, and the problem, transfer efficiency is greatly improved.

In implementation, the cross section of the rectangular through groove may be rectangular, or may also be rounded rectangle, etc., the above-mentioned fixed guide vane 6, the active guide vane 7 and the passive guide vane 8 may all extend along the length direction of the rectangular through groove, and are uniformly arranged along the width direction of the rectangular through groove, for example, from left to right, the fixed guide vane 6 may be sequentially arranged, a plurality of passive guide vanes 8 and the active guide vane 7, the fixed guide vane 6 is fixedly connected with the inner side wall of the annular outer frame 5, and may be connected by bolts, a plurality of passive guide vanes 8 and the active guide vane 7 are slidably connected with the annular outer frame 5, and the sliding direction may be along the direction perpendicular to the fixed guide vane 6, for example, the width direction of the rectangular through groove may be followed.

Preferably, the minimum distance limiting device may be a spacing needle 16, the spacing needle 16 may have a U-shaped structure, an opening of the spacing needle 16 downwardly spans over the driven guide vane 8, a top end of the spacing needle 16 is detachably connected to a top end of the driven guide vane 8, two side portions of the spacing needle 16 are inserted into two sides of the corresponding guide vane, when the driving guide vane 7 is moved in a direction approaching the fixed guide vane 6, the driving guide vane 7 contacts with the spacing needle 16 on the adjacent driven guide vane 8 to drive the adjacent driven guide vane 8 to move in a direction approaching the driving guide vane 7, and so on, until the spacing needle 16 on the driven guide vane 8 adjacent to the fixed guide vane 6 contacts with the fixed guide vane 6, the lateral distance between the guide vanes is the minimum distance, the cross section of the spacing needle 16 may be circular, the minimum distance between the guide vanes may be adjusted by using spacing needles 16 with different diameters, for example, a fixing groove may be provided at the top end of the driven guide vane 8, the top of the separating needle 16 is fixed in the fixing groove, or a round hole can be arranged at the top end of the guide sheet, a downward bulge is arranged at the bottom of the top end of the separating needle 16, the bulge is clamped into the round hole to be fixed, the transverse distance between two adjacent collecting grooves 4 on the collecting plate 2 is constant, therefore, the transverse distance between two adjacent pipette tips is constant, but because the diameters of the pipette tips with different specifications are different, after the pipette tips are arranged on the collecting plate 2, along the direction of the collecting groove 4, the distance between two adjacent collecting grooves 4 on the collecting plate 2 can be changed due to different specifications, the distance between two adjacent collecting grooves 4 on the collecting plate 2 is equal to the distance between the fixing guide sheet 6 or between two adjacent through holes 9 on one driven guide sheet 8 or one driven guide sheet 7, when in use, the fixing guide sheet 6 is perpendicular to the collecting groove 4, and then the separating needle 16 with a proper diameter, move initiative guide vane 7 to the direction that is close to fixed guide vane 6, initiative guide vane 7 draws close to fixed guide vane 6 direction with driven guide vane 8 in proper order, after initiative guide vane 7, driven guide vane 8 all contact with separating needle 16 with initiative guide vane 7, the distance between two adjacent getting needles 10 that lie in different guide vanes this moment equals the longitudinal distance of two liquid-transfering gun heads, a plurality of getting needles 10 all are adjusted well with liquid-transfering gun head this moment, can press downwards and get the fixed liquid-transfering gun head of needle 10.

In an implementation, the maximum distance limiting device may be a linkage device, when the driving guide vane 7 is pulled in a direction away from the fixed guide vane 6, the driven guide vane 8 also moves in a direction away from the fixed guide vane 6 along with the driving guide vane 7, and when the driving guide vane 7 moves to a certain distance, the device limits the continuous movement thereof, so that the maximum distances between the driven guide vanes 8, between the driven guide vanes 8 and the driving guide vane 7, and between the driven guide vanes 8 and the fixed guide vane 6 can be adjusted, so that the needle 10 can be aligned with the hole on the special box, and the pipette tips can be accurately placed in the special box, for example, the number of the driven guide vanes 8 may be six, the maximum distance limiting device includes a limiting screw 14 and a limiting ring 15, a limiting screw 14 is vertically arranged at the top of each guide vane along its length direction, and the bottom of the limiting screw 14 extends into the corresponding guide vane, the top of the limiting ring 15 extends outwards, the limiting rings 15 can comprise a plurality of limiting rings 15, the limiting rings 15 are arranged in a vertically staggered manner, for example, the fixed guide vane 6 can be a No. 1 guide vane, the driven guide vane 8 can be a No. 2 guide vane, a No. 3 guide vane, a No. 4 guide vane, a No. 5 guide vane, a No. 6 guide vane and a No. 7 guide vane in sequence from the direction close to the fixed guide vane 6 to the direction far away from the fixed guide vane 6, the driving guide vane 7 can be a No. 8 guide vane, the limiting rings 15 are arranged in two layers, namely a bottom layer close to the guide vanes and a top layer above the bottom layer, one embodiment is that the No. 1 guide vane and the No. 2 guide vane, the No. 3 guide vane and the No. 4 guide vane, the No. 5 guide vane and the No. 6 guide vane, the limiting rings 15 are respectively sleeved outside the limiting screws 14 on the No. 7 guide vane and the No. 8 guide vane, the No. 2 guide vane and the No. 3 guide vane on the top layer, the No. 4 guide vane and the No. 5 guide vane, the spacing ring 15 can be waist shape ring, the length of spacing ring 15 is greater than the diameter sum of two stop screw 14, when moving initiative guide vane 7 to the direction of keeping away from fixed guide vane 6, spacing ring 15 drives driven guide vane 8 and moves to the direction of keeping away from fixed guide vane 6 in proper order, when moving the maximum length of every spacing ring 15 and stop moving, the needle 10 of each getting is aligned with the placing hole on the special box this moment, can be accurate will be located and get the liquid-transfering gun head on the needle 10 and place downtheholely.

In the implementation, the top end and the middle part of the above-mentioned needle 10 are both provided with a blocking limit structure, when the needle 10 is not in contact with the pipette tip, the needle 10 slides downwards along the through hole 9 under the action of self gravity, and stops when sliding to the upper blocking limit structure to be in contact with the guide vane, when the needle 10 is in contact with the pipette tip, the needle 10 is pushed upwards, and stops when sliding to the lower blocking limit structure to be in contact with the guide vane, the blocking limit structure can be an inward concave annular limit groove and an elastic retainer ring arranged in the annular limit groove, the top end of the needle 10 penetrates out of the top of the through hole 9 upwards, the outer diameter of the elastic retainer ring is larger than the inner diameter of the through hole 9, so that the needle 10 can be prevented from falling out of the through hole 9, the annular groove 24 in the middle part of the needle 10 penetrates out of the bottom of the through hole 9 downwards, the distance between the two annular grooves 24 is larger than the height of the guide vane, so that the needle, when the height of the arranged pipette tips is not consistent, each taking needle 10 can be ensured to be inserted into the pipette tips, when the pipette tips are used, the taking needles 10 are aligned with the arranged pipette tips, the annular outer frame 5 is moved downwards, and after each taking needle 10 is contacted with the pipette tips, the top of the taking needle 10 is pressed downwards, so that the bottom of the taking needle 10 is inserted into the pipette tips.

In implementation, the above-mentioned push rods 12 may include two pairs, two push rods 12 of each pair of push rods 12 may be respectively disposed on two side edges of the annular outer frame 5 along a direction perpendicular to the guide vane, two pairs of push rods 12 are symmetrically disposed on two sides of the annular outer frame 5 along a length direction, a handle 17 is disposed between each pair of push rods 12, the handle 17 may be a connecting rod, two ends of the connecting rod are respectively connected with a top end of the push rod 12, after the pipette head is transferred to the special box, the annular outer frame 5 may be held by a hand, the handle 17 is pressed downward, the push rods 12 drive the blocking sheet 11 to move downward, the pipette head on the needle 10 is scraped, and drops into the special box, thereby completing the transfer operation.

The sliding connection between the guide vane and the annular outer frame 5 can be realized by using a sliding rod 18, two sliding rods 18 are respectively arranged at two ends of the rectangular through groove along the length direction of the guide vane, the sliding rod 18 extends along the direction vertical to the guide vane, sliding holes 19 are arranged at the positions of the guide vane corresponding to the sliding rods 18, the sliding rods 18 are arranged in the sliding holes 19 in a penetrating manner, two ends of the sliding rods are connected with the annular outer frame 5, and the guide vane can slide along the sliding rods 18.

The upper part of the taking needle 10 can be cylindrical, and the bottom part of the taking needle can be conical, so that the taking needle 10 can stably fix the pipette head after being inserted into the pipette head, and the pipette head is prevented from deflecting.

Furthermore, the two ends of the driving guide piece 7 in the length direction can be provided with a wrench 20 for pulling the driving guide piece 7 to slide, the wrench 20 can be a rectangular bump, and the wrench 20 protrudes out of the end surface of the driven guide piece 8 in the length direction, so that the wrench 20 can be used as a force application point when the driving guide piece 7 is moved, and the movement is convenient.

The cross section of the guide groove 3 can be rectangular or arc, the preferred embodiment is arc, the guide groove 3 extends from the head end of the guide plate 1 to the tail end of the guide plate 1, the collecting groove 4 can be a kidney-shaped groove, the two ends of the head end and the tail end are semicircular grooves, and the middle is a rectangular groove.

In order to prevent the messy pipette tips from falling from the left and right sides when the pipette tips are placed on the guide plate 1, the left and right sides of the guide plate 1 can be provided with baffle plates 21 extending upwards, the height of each baffle plate 21 can be larger than the diameter of the tail end of the pipette tip, the front end and the rear end of each baffle plate 21 can be provided with first bolt holes, the first bolt holes can be perpendicular to the upper surface of the guide plate 1, the left and right sides of the upper surface of the guide plate 1 are provided with second bolt holes corresponding to the first bolt holes, and the baffle plates 21 and the guide plate 1 are fixedly connected through bolts after the first bolt holes are aligned with the second bolt holes.

The support can comprise first supporting rods 22 arranged on the left side and the right side of the guide plate 1 and second supporting rods 23 arranged on the left side and the right side of the collecting plate 2, the first supporting rods 22 are arranged at the bottom of the guide plate 1, the second supporting rods 23 are arranged at the bottom of the collecting plate 2, in order to enable the guide plate 1 and the collecting plate 2 to be obliquely arranged, the length of the first supporting rods 22 is larger than that of the second supporting rods 23, first mounting holes penetrating through the guide plate 1 are formed in the left side and the right side of the guide plate 1, after the top ends of the first supporting rods 22 penetrate through the first mounting holes, the top ends of the first supporting rods 22 are connected with the guide plate 1 through first nuts, similarly, second mounting holes penetrating through the guide plate 1 are formed in the left side and the right side of the collecting plate 2, and after the top ends of the second supporting rods 23 penetrate through the second mounting holes, the top ends of the second supporting.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides a pipette tip sequencing transfer device which characterized in that includes:

the sequencing device comprises a guide plate (1), a collecting plate (2) and a bracket, wherein the upper surface of the guide plate (1) is provided with a plurality of guide grooves (3) extending along the front-back direction of the guide plate (1), the head end of the collecting plate (2) is connected with the bottom of the tail end of the guide plate (1), a plurality of collecting grooves (4) which vertically penetrate through the collecting plate (2) are arranged on the collecting plate (2), the collecting grooves (4) extend in the front-rear direction of the collecting plate (2), each collecting groove (4) corresponds to one guide groove (3), the width of the collecting groove (4) is larger than the outer diameter of the root part of the pipette head and smaller than the diameter of the tail end of the pipette head, the bracket is arranged at the bottom of the guide plate (1) and the collecting plate (2), the height of the bracket is gradually reduced from the head end of the guide plate (1) to the tail end of the collecting plate (2);

the transfer device comprises an annular outer frame (5), a gun taking device and a gun pushing device, wherein the gun taking device and the gun pushing device are arranged on the inner side of the annular outer frame (5), the gun taking device comprises a fixed guide vane (6) fixedly connected with the inner side of the annular outer frame (5), a driving guide vane (7) arranged in parallel with the fixed guide vane (6) and a plurality of driven guide vanes (8) arranged between the driving guide vane (7) and the fixed guide vane (6), the driving guide vane (7) and the driven guide vane (8) are both in sliding connection with the annular outer frame (5), the sliding direction is along the direction vertical to the fixed guide vane (6), the driven guide vane (8) and the driving guide vane (7) are provided with a plurality of vertical through holes (9), each through hole (9) is internally provided with a downward extending taking needle (10), the gun pushing device comprises a baffle plate (11) and a push rod (12), the push rod (12) is connected with the annular outer frame (5) in a sliding mode along the vertical direction, the baffle plate (11) is arranged below the fixed guide plate (6) and is connected with the bottom end of the push rod (12), a plurality of strip-shaped through grooves (13) extending along the direction vertical to the fixed guide sheet (6) are uniformly arranged on the blocking sheet (11) along the extending direction of the fixed guide sheet (6), each row of the needles (10) corresponds to one strip-shaped through groove (13), the width of the strip-shaped through groove (13) is larger than the outer diameter of the needle (10) and smaller than the diameter of the tail end of the liquid-transfering gun head, the driving guide vane (7) and the driven guide vanes (8), the driven guide vanes (8) and the fixed guide vane (6) are all provided with a maximum distance limiting device and a minimum distance limiting device.

2. The pipette tip sorting and transferring device according to claim 1, wherein the maximum distance limiting device comprises limiting screws (14) and limiting rings (15), the limiting screws (14) are arranged at two ends of the fixed guide vane (6), the driven guide vanes (8) and the driving guide vane (7) along the length direction of the fixed guide vane, the limiting rings (15) are sleeved at the outer sides of every two adjacent limiting screws (14), and the length of each limiting ring (15) is greater than the sum of the diameters of the two limiting screws (14).

3. The pipette tip ordering and transferring device according to claim 1, wherein the minimum distance limiting device is a detachable spacer pin (16), and the spacer pins (16) are arranged between the fixed guide vane (6) and the adjacent driven guide vane (8), between the two driven guide vanes (8) and between the driving guide vane (7) and the driven guide vane (8).

4. The pipette tip sequencing and transferring device according to claim 1, wherein the top end and the middle part of the taking needle (10) are provided with blocking and limiting structures, and the distance between the two blocking and limiting structures is larger than the height of the guide vane.

5. Pipette tip sequencing transfer device according to claim 1, characterized in that the pushers (12) comprise two pairs, between the tips of each pair of pushers (12) there being provided a handle (17).

6. The pipette tip sorting and transferring device according to claim 1, wherein slide bars (18) are arranged at both ends of the annular outer frame (5) in the length direction of the guide vane, the slide bars (18) extend in the direction perpendicular to the guide vane, slide holes (19) are arranged at both ends of the guide vane in the length direction, the slide bars (18) are arranged in the slide holes (19) in a penetrating manner, and the guide vane can slide along the slide bars (18).

7. Pipette tip ordering and transferring device according to claim 1, characterized in that the bottom of the needle (10) is conical.

8. The pipette tip sequencing and transferring device according to claim 1, wherein both ends of the driving guide (7) in the length direction are provided with wrenches (20) for pulling the driving guide (7) to slide.

9. The pipette tip sorting and transferring device according to claim 1, wherein the guide plate (1) is provided with upwardly extending baffles (21) on both left and right sides, and the height of the baffles (21) is larger than the diameter of the tail end of the pipette tip.

10. Pipette tip sorting and transferring device according to claim 1, characterized in that the support comprises first support bars (22) on the left and right sides of the guide plate (1) and second support bars (23) on the left and right sides of the collecting plate (2), the length of the first support bars (22) being greater than the length of the second support bars (23).