CN110182428B

CN110182428B - Gun head batch boxing system of pipetting gun

Info

Publication number: CN110182428B
Application number: CN201910130716.6A
Authority: CN
Inventors: 王国胜; 叶馨霖
Original assignee: Hangzhou Duotai Technology Co ltd
Current assignee: Hangzhou Duotai Technology Co ltd
Priority date: 2019-02-21
Filing date: 2019-02-21
Publication date: 2024-01-16
Anticipated expiration: 2039-02-21
Also published as: CN110182428A

Abstract

The invention discloses a gun head batch boxing system of a pipetting gun, which comprises a base, a box storage device and a box storage device, wherein the base is used for storing gun head boxes; the screen disc comprises a plurality of arranging grooves for arranging unordered gun heads and arranging the unordered gun heads into ordered arrangement and a blanking channel for the ordered gun heads to fall into a gun head box; the loading device is used for pushing the orderly arranged gun heads to move from the arranging groove to the blanking channel; the loading device and the screen disc can integrally move relative to the base so as to correspond the blanking channel with the gun head hole on the gun head box. When the tool is used, the base is used for fixing the pipette gun head box, and the screen disc is used for enabling the gun heads to be in a vertical arrangement state. At this time, the movable handle can be used for driving the scraping plate to scrape and transfer the gun head, and the gun head is placed in the gun head box. Meanwhile, devices above the scraping plate, the screen disc and the like translate forwards along the positioning button and translate to the position above the gun head hole of the gun head box of the next row of liquid transferers, and the steps are repeated, so that the gun heads of the liquid transferers are quickly inserted.

Description

Gun head batch boxing system of pipetting gun

Technical Field

The invention relates to a tool for efficiently inserting and mounting pipette tips, in particular to a gun tip batch boxing system of a pipette, which can efficiently load pipette tips into gun tip boxes in experiments in the fields of biology, chemistry and the like.

Background

In the scientific fields, such as medical, pharmaceutical, protein research, gene research, biological research, drug development laboratories and other biotechnology fields, it is often necessary to use pipettes to manipulate laboratory samples in laboratory specifications. A pipette is used to aspirate a volume of liquid into a pipette and then mix or dispense multiple liquids into a single volume or into multiple volumes. In a laboratory, small or trace amounts of liquid are removed, different specifications of pipettes can be used, and different pipettes are matched with gun heads of different sizes. After the pipette tips are produced, the pipette tips are generally inserted into a pipetting box by a box packing machine and transported by a storage box. Currently, the only micropipette in the field of molecular biology research is the pipettor, which also has a unique value with the development of molecular biology. The pipette tip that laboratory used is the toper structure, and plastic materials, different specifications, shortest be 40mm, longest be 80mm, and the diameter of upper end also changes along with the length of pipette tip, from 4mm to 10mm.

In the fields of medical treatment, medicine, protein research, gene research, biological research, medicine development laboratory and the like, a great deal of working time is required to be spent for inserting the pipette tip. The adoption of the purely manual cartridge pipette tip consumes a great deal of time and labor, and a device which can improve the cartridge efficiency, is convenient to popularize and has low cost is needed to replace the manual operation.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art and providing a gun head batch boxing system of a pipette gun, which can efficiently finish the work of inserting the pipette gun heads.

In order to solve the technical problems, the invention adopts the following technical means:

a gun head batch boxing system for a pipette gun, comprising:

the base is used for placing the gun head box;

the screen disc comprises a plurality of arranging grooves for arranging unordered gun heads and arranging the unordered gun heads into ordered arrangement and a blanking channel for the ordered gun heads to fall into a gun head box;

the loading device is used for pushing the orderly arranged gun heads to move from the arranging groove to the blanking channel;

the loading device and the screen disc can integrally move relative to the base so as to correspond the blanking channel with the gun head hole on the gun head box.

The technical scheme can be further perfected by the following technical measures:

as a further improvement, the loading device comprises a fixed handle, a movable handle and a scraping plate for pushing the gun head to move, wherein the fixed handle is fixedly connected with the screen disc, the movable handle is rotatably and movably connected with the fixed handle, and the movable handle is connected with the scraping plate and drags the scraping plate to move. Preferably, the scraper is rotatably mounted on the movable handle about an axis, and the movable handle is provided with a limiting device for limiting the upward rotation position of the scraper. Preferably, a return spring for providing a restoring force for the movable handle is arranged between the movable handle and the fixed handle.

As a further improvement, the loading device comprises a trigger piece, a connecting rod assembly, a scraping plate and a guide structure, wherein the trigger piece is connected with the scraping plate through the connecting rod structure and drives the scraping plate to move upwards, the guide structure comprises a guide inclined block which guides the scraping plate to move upwards from an initial position and simultaneously far away from a blanking channel, a transverse channel which guides the scraping plate to move towards a direction close to the blanking channel after crossing the top position of the first guide part, and a vertical channel which guides the scraping plate to move downwards to the initial position. Preferably, the guide inclined block is provided with an inclined guide surface which is gradually inclined from bottom to top in a direction away from the blanking channel. Preferably, the transverse channel is provided above the guide ramp. Preferably, the vertical channel is provided on the other side of the guide ramp block with respect to the guide ramp. Preferably, the scraper is connected with a first force application member for applying force in a direction of making the scraper far away from the upper opening of the blanking channel. Preferably, the scraper is further connected with a second force application member for applying force in a direction of making the scraper approach to the side surface of the blanking channel. Preferably, the bottom of the vertical channel is provided with a limiting device. The number of the guide structures is two, and the guide structures are respectively positioned at two positions of the scraping plate, which are separated by a certain position. Preferably, the scraping plate is provided with a plurality of comb teeth, and the number and the positions of the comb teeth are matched with those of the arranging groove.

As a further improvement, a positioning device for aligning the blanking channel with the gun head hole is arranged between the base and the screen disc. Preferably, the positioning device comprises a positioning button capable of moving up and down and a positioning needle capable of pushing the positioning button to move down, the positioning button is arranged on the base, and the positioning needle is arranged on the screen disc and is linked with the loading device. Preferably, the positioning buttons are multiple and correspond to each row of gun head holes, each positioning button is provided with a limiting surface and a guiding surface which are oppositely arranged, each limiting surface is a vertical surface opposite to the positioning needle, each guiding surface is an inclined surface opposite to the positioning needle, and the positioning needle can slide forwards until the positioning needle is propped against the vertical surface. Preferably, the blade is connected to the positioning needle by a linkage assembly comprising at least one linkage.

As a further improvement, the scraper is connected to the positioning needle by a sliding structure comprising a slider and a chute perpendicular to the length direction of the positioning needle, so that the slider can only move in a direction perpendicular to the positioning needle and cannot move in a direction parallel to the positioning needle. Preferably, the sliding block and the sliding groove are respectively arranged on one and the other of the scraping plate and the positioning needle.

As a further improvement, a tension spring for pulling the screen disc to move forwards and a guide mechanism for providing guide for the screen disc to move forwards are arranged between the base and the screen disc, the guide mechanism comprises a guide groove and a guide column which are matched, the guide column is arranged on the screen disc, the guide groove is arranged on the base, the tension spring is positioned in the guide groove, and two ends of the tension spring are respectively connected to the guide column and the base.

As a further improvement, the bottom of the arranging groove is provided with a placing platform for placing the orderly arranged gun heads. Preferably, a blocking rib is arranged between the upper opening part of the blanking channel and the support shelving platform, and one side of the blocking rib, which is close to the support shelving platform, is an inclined plane. The top surface of the upper opening part of the blanking channel is higher than the bottom surface of the supporting and placing platform.

As a further improvement, the plurality of the arranging grooves are parallel to each other and are obliquely arranged. Preferably, the screen tray is provided with coaming plates which are surrounded on the periphery of the plurality of arranging grooves so as to prevent the gun heads from jumping out of the screen tray. The width of the arranging groove is larger than the diameter of the small end of the gun head but smaller than the diameter of the large end of the gun head.

Due to the adoption of the technical scheme, the invention has the following beneficial technical effects:

according to the invention, the gun heads of the unordered pipetting gun can be put in an ordered state and pushed into the blanking channel, and then the gun heads are put into the gun head box arranged on the base, and the positioning device is further arranged on the base, so that the blanking channel can be aligned with each row of gun head holes on the gun head box. The tool is simple to use, low in cost and convenient to popularize.

Drawings

Fig. 1 is a schematic view of a gun head structure of a pipette.

Fig. 2 is an overall structural view of the first embodiment.

Fig. 3 is a front structural view of a sieve tray in the first embodiment.

Fig. 4 is a view showing the structure of the back surface of the sieve tray in the first embodiment.

Fig. 5 is a structural view of the base in the first embodiment.

Fig. 6 is an exploded view of the base of fig. 5.

Fig. 7 is a structural view of a positioning device in the first embodiment.

Fig. 8 is an overall structural view of the second embodiment.

Fig. 9 is a view showing the structure of the back surface of the screen tray according to the second embodiment.

Fig. 10 is a structural view of the loading device of the second embodiment.

Reference numerals illustrate:

1. a gun head; 101. a large end; 102. a small end; 2. a base; 3. a gun head box; 4. a screen tray; 401. a return groove; 402. a rest platform; 403. a blanking channel; 404. a column; 5. a loading device; 501. a fixed handle; 502. a movable handle; 503. a scraper; 504. a positioning block; 505. an elongated waist hole; 506. a guide sloping block; 507. a limiting device; 508. a trigger; 509. a third link; 510. a fourth link; 511. a first urging member; 512. a second force application member; 513. the first guide sleeve; 514. a second guide sleeve; 6. a positioning device; 601. a positioning button; 602. a return spring; 603. a tension spring; 604. a guide post; 605. a positioning needle; 606. a second link; 607. a first link.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," "rear," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, but do not indicate or imply that the apparatus or elements to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. Features of the embodiments described below may be combined with each other without conflict.

Embodiment one:

the tip 1 of the pipette shown in FIG. 1 has a small end 102 at the front end and a large end 101 at the rear end, the small end 102 being adapted to be inserted into a container for introducing a solution, the large end 101 being adapted to be mounted in connection with an outlet of the pipette. When loaded into the gun head box 3, the small end 102 faces downwards and the large end 101 faces upwards.

A pipette tip 1-lot boxing system of a pipette gun as shown in fig. 2, 3, 4, comprising: a base 2 for placing a gun head box 3; a screen tray 4 including a plurality of arranging grooves 401 for arranging unordered gun heads 1 and arranging them in an ordered arrangement, and a blanking passage 403 for the ordered gun heads 1 to fall into the gun head box 3; loading means 5 for pushing the orderly arranged gun heads 1 to move from the arranging groove 401 to the blanking passage 403; the loading device 5 and the screen disc 4 can integrally move relative to the base 2 so as to enable the blanking channel 403 to correspond to the hole of the gun head 1 on the gun head box 3. The orderly arranged gun heads 1 means that the gun heads 1 are positioned in the arranging groove 401, the small end 102 faces downwards, and the large end 101 faces upwards.

As shown in fig. 2 and 7, the loading device 5 comprises a fixed handle 501, a movable handle 502 and a scraper 503 for pushing the gun head 1 to move, the fixed handle 501 is fixedly connected with the screen tray 4, the movable handle 502 is rotatably and movably connected on the fixed handle 501, and the movable handle 502 is connected with the scraper 503 and drags the scraper 503 to move. The scraper 503 is rotatably mounted on the movable handle 502 around an axis, and a limiting device 507 for limiting the upward rotation position of the scraper 503 is arranged on the movable handle 502. A return spring 602 is provided between the movable handle 502 and the fixed handle 501 to provide a restoring force to the movable handle 502.

As shown in fig. 2 and 7, the vertical direction of the fixed handle 501 and the movable handle 502 is a length direction to facilitate the user's grip. The fixed handle 501 and the screen tray 4 are fixedly connected, and in this embodiment, an integrated arrangement is adopted, and of course, the split fixed handle 501 and the screen tray 4 can be fixedly connected together in other fastening connection manners. The movable handle 502 is movably hinged with the fixed handle 501 through a pin shaft, the two hinged parts are positioned at the lower end of the movable handle 502, two ends of the pin shaft are fixed on the fixed handle 501, and of course, the movable handle 502 can also be rotatably supported on the fixed handle 501 along a fixed axis, the movable handle 502 is provided with a long waist hole 505, and the pin shaft penetrates into the long waist hole 505 to enable the movable handle 502 to swing around the pin shaft.

As shown in fig. 7, the movable handle 502 is connected with the scraper 503 to drag the scraper 503 to move on the screen tray 4, the scraper 503 is connected with the movable handle 502 through a pin shaft, the scraper 503 is provided with a notch, the movable handle 502 is provided with a protruding part which can be inserted into the notch, the side walls of two sides of the notch are respectively provided with a pin hole, the protruding part is also provided with a through pin hole, and the pin shaft passes through the pin hole on the scraper 503 and the pin hole on the movable handle 502 to connect the two. To maintain the squeegee 503 and the movable handle 502 at a fixed angle, the pins and pin holes are a tight fit to prevent the squeegee 503 from falling down to block the deposited gun head box 3 from falling down onto the rest platform 402.

As shown in fig. 2 and 7, in order to prevent the scraper 503 from turning upwards after being stressed and making the scraper 503 unable to contact the ordered gun head 1 on the rest platform 402, a limiting device 507 is disposed on the movable handle 502 in this embodiment, and the limiting device 507 and the movable handle 502 are in tight fit. In addition, a torsion spring is further provided between the movable handle 502 and the fixed handle 501, and both ends of the torsion spring are respectively fixed on the fixed handle 501 and the movable handle 502 to form a tension between the movable handle 502 and the fixed handle 501, so that the movable handle 502 can be quickly reset when a user releases the movable handle 502.

As shown in fig. 3 and 4, the bottom of the placement groove 401 is provided with a placement platform 402 for placing the orderly arranged gun heads 1, the unordered gun heads 1 are orderly arranged at the lower part of the placement groove 401 after being screened by the placement groove 401, and the gun head 1 at the bottommost part is positioned on the placement platform 402. In order to prevent the gun head 1 positioned on the shelving platform 402 from automatically falling into the blanking channel 403 after being extruded by the gun head 1 above, a blocking rib is arranged between the upper opening part of the blanking channel 403 and the shelving platform 402, and an inclined plane is arranged on one side of the blocking rib, which is close to the supporting shelving platform 402. The top surface of the upper mouth of the blanking channel 403 is higher than the bottom surface of the support rest platform 402. The number of the placement grooves 401 is 12 in this embodiment, which are parallel to each other and are disposed obliquely. The screen tray 4 is provided with coaming plates which are surrounded on the periphery of the plurality of arranging grooves 401 so as to prevent the gun head 1 from jumping out of the screen tray 4. In order to prevent the gun head 1 from falling from the setting groove 401, the width of the setting groove 401 is larger than the diameter of the small end 102 of the gun head 1 but smaller than the diameter of the large end 101 thereof, so that the gun head 1 can be arranged in the setting groove 401 with the small end 102 facing downwards and the large end 101 facing upwards.

As shown in fig. 5 and 6, a positioning device 6 for aligning the blanking channel 403 with the hole of the gun head 1 is arranged between the base 2 and the screen disc 4. The positioning device 6 comprises a positioning button 601 capable of moving up and down and a positioning needle 605 capable of propping against the positioning button 601 to enable the positioning button 601 to move downwards, the positioning button 601 is arranged on the base 2, a return spring 602 is arranged below the positioning button 601, the return spring 602 is a cylindrical spring, two ends of the return spring are respectively propped against the positioning button 601 and the base 2, and a mounting hole for specially mounting the positioning button 601 and the return spring 602 is formed in the base 2. The positioning needle 605 is arranged on the screen tray 4 and is in linkage with the loading device 5. The number of the positioning buttons 601 corresponds to the number of the holes of the gun head 1 on the gun head box 3, and the two positioning buttons correspond to each other, and in this embodiment, the number of the positioning buttons 601 is 8. The positioning button 601 has a limiting surface and a guiding surface disposed opposite to each other, the limiting surface is a vertical surface opposite to the positioning needle 605, the guiding surface is an inclined surface opposite to the positioning needle 605, and the inclined surface can allow the positioning needle 605 to slide forward until the positioning needle abuts against the vertical surface.

As shown in fig. 7, the scraper 503 is connected with the positioning needle 605 through a connecting rod assembly, the connecting rod assembly comprises a first connecting rod 607 and a second connecting rod 606, one end of the first connecting rod 607 is movably hinged with the second connecting rod 606, the other end of the first connecting rod 607 is movably hinged with the scraper 503, and the other end of the second connecting rod 606 is movably hinged with the positioning needle 605. The screen tray 4 is provided with a chute for the positioning needle 605 to move up and down, and the positioning needle 605 can be driven to move up and down in the moving process of the scraping plate 503.

As shown in fig. 5 and 6, a tension spring 603 for pulling the screen tray 4 to move forward and a guiding mechanism for guiding the screen tray 4 to move forward are arranged between the base 2 and the screen tray 4, the guiding mechanism comprises a guiding groove and a guiding column 604 which are matched, the guiding column 604 is connected with the screen tray 4 and can move along with the screen tray 4, the guiding groove is arranged on the base 2, the tension spring 603 is positioned in the guiding groove, and two ends of the tension spring are respectively connected with the guiding column 604 and the base 2. The guide post 604 includes two parts, a vertical part inserted into the guide groove and a horizontal part in contact with the top surface of the guide groove to provide a positioning effect for the guide post 604 in the upper and lower positions of the guide groove. A cavity is formed in the middle of the vertical portion of the guide post 604, a downward extending upright 404 is provided on the screen tray 4, and the upright 404 is inserted into the cavity to connect the screen tray 4 and the base 2.

In this embodiment, when a user needs to carry out boxing of the gun heads 1, firstly, the gun head box 3 is placed on the base 2, then the randomly disordered gun heads 1 are placed on the screen plate 4, and the screen plate 4 is rocked to place the disordered gun heads 1 in an ordered state. Then the screen tray 4 is connected with the base 2, namely, the upright column 404 on the screen tray 4 is inserted into the guide column 604, the positioning needle 605 is abutted against the vertical positioning surface of the positioning button 601, then the movable handle 502 is held tightly, the movable handle 502 drives the scraping plate 503 to move obliquely downwards in the process of being close to the fixed handle 501, and the orderly arranged gun heads 1 on the shelving platform 402 are pushed into the blanking channel 403, and the gun heads 1 fall into the gun head 1 holes on the gun head box 3 from the blanking channel 403. During the movement of the scraper 503, the positioning needle 605 moves upwards and gradually breaks away from the positioning button 601, when the scraper 503 pushes the gun head 1 into the blanking channel 403, the positioning needle 605 breaks away from the positioning button 601, moves forward under the action of the tension spring 603, simultaneously the screen disc 4 moves downwards under the action of gravity and falls between the two positioning buttons 601 again, and abuts against the vertical positioning surface of the other positioning button 601 under the action of the tension spring 603, and simultaneously the blanking channel 403 aligns with the other gun head 1 hole, so as to be ready for the next working cycle. The invention has the advantages of simple structure, convenient operation, batch boxing, great saving of labor and improvement of the boxing efficiency of the gun head 1.

Embodiment two:

as shown in fig. 8, 9 and 10, the basic structural embodiment of the present embodiment is basically the same, except that the structure of the loading device 5 is mainly different, and the loading device 5 in this embodiment includes a trigger piece 508, a link assembly, a scraper 503, and a guiding structure, wherein the trigger piece 508 is connected to the scraper 503 by the link structure and drives the scraper to move upward, and the guiding structure includes a guiding inclined block 506 guiding the scraper 503 to move upward from an initial position and away from the blanking channel 403, a transverse channel guiding the scraper 503 to move close to the blanking channel 403 after crossing the top position of the first guiding part, and a vertical channel guiding the scraper 503 to move downward to the initial position. The guide inclined block 506 has an inclined guide surface inclined gradually from bottom to top in a direction away from the blanking passage 403. The transverse channel is provided above the guide ramp 506. The vertical channel is provided on the other side of the guide ramp block 506 with respect to the guide ramp. The scraper 503 is connected to a first urging member that urges the scraper 503 in a direction away from the upper opening of the blanking passage 403. The scraper 503 is further connected to a second urging member that urges the scraper 503 in a direction toward the side of the blanking passage 403. The bottom of the vertical channel is provided with a limiting device 507. The number of the guide structures is two, and the guide structures are respectively positioned at two positions which are separated by a certain position on the scraping plate 503. The scraping plate 503 has a plurality of comb teeth thereon, and the number and the positions of the comb teeth are matched with those of the reset groove 401.

As shown in fig. 8 and 10, the trigger 508 is a seater, the linkage assembly includes a third link 509 and a fourth link 510, each of the seater, the third link 509 and the fourth link 510 being a centrally supported lever structure with a central portion pivotally connected to an extension of the screen pan 4. The button machine is movably hinged with one end part of the third connecting rod 509, the other end part of the third connecting rod 509 is movably hinged with one end part of the fourth connecting rod 510, the other end part of the fourth connecting rod 510 is movably hinged with one end part of the scraping plate 503, the other end part of the button machine is freely arranged, and when a user pulls the free end of the button machine, the tail end of the fourth connecting rod 510 can be driven to be lifted upwards through the third connecting rod 509, and meanwhile the scraping plate 503 is driven to move upwards.

As shown in fig. 8 and 9, the scraping plate 503 is located at the back of the screen disc 4, and a guiding inclined block 506 is respectively arranged at the back of the screen disc 4 and at the positions of two ends of the scraping plate 503, when the scraping plate 503 moves upwards on the guiding inclined block 506 under the drive of the fourth connecting rod 510, the guiding inclined surface on the guiding inclined block 506 can generate displacement away from the blanking channel 403 and the rest platform 402, and when the scraping plate 503 reaches the top of the guiding inclined block 506, the scraping plate 503 is located just outside the rest platform 402 so as to facilitate pushing the gun head 1 to fall into the blanking channel 403. The flight 503 will quickly push the gun head 1 from the rest platform 402 into the blanking channel 403 and drop from the blanking channel 403 past the guide ramp 506 as it continues to move upward.

The scraping plate 503 is also sleeved with a first guide sleeve 513 and a second guide sleeve 514, the scraping plate 503 passes through the first guide sleeve 513 and can move back and forth in the horizontal direction in the guide sleeve, but cannot move freely in the up-down direction, and the scraping plate 503 passes through the second guide sleeve 514 and can move up and down in the guide sleeve, but cannot move back and forth in the horizontal direction. The end of the fourth link 510 is movably hinged to the first guide sleeve 513, and the first force applying member is connected to the first guide sleeve 513, where two ends of the first force applying member are respectively connected to the lower portion of the guide sleeve and the screen disc 4 to generate a force for pulling the guide sleeve and the scraper 503 to move downward, which can also be interpreted as a force for making the scraper 503 far from the upper opening portion of the blanking channel 403 and close to the lower opening portion thereof, and in this embodiment, the first force applying member is a tension spring. Both ends of the second force application member are respectively connected to the side portion of the second guide sleeve 514 and the screen disc 4, so as to generate a force for pulling the second guide sleeve 514 and the scraping plate 503 to the inner side to abut against the screen disc 4, which can also be interpreted as a force for abutting against the blanking channel 403, and in this embodiment, the second force application member is also a tension spring.

As shown in fig. 8 and 9, a transverse channel through which the end of the scraper 503 passes is provided above the guiding inclined block 506, so that the scraper 503 can quickly approach the blanking channel 403 from a position far away from the blanking channel 403 under the action of the second force application component after passing over the guiding inclined block 506, when the scraper 503 approaches the blanking channel 403, due to the vertical channel through which the scraper 503 passes being provided behind the guiding inclined block 506, the scraper 503 moves downwards from the vertical channel under the action of the first force application component, and returns to the position below the guiding inclined block 506 under the action of the vertical channel bottom limiting device 507. During the upward movement of the squeegee 503 along the slope of the guide slope 506, the first urging member and the second urging member simultaneously store energy, and respectively generate a downward pulling force and an inward pulling force on the squeegee 503.

As shown in fig. 9, the scraper 503 is connected to the positioning needle 605 by a sliding structure including a slider and a chute perpendicular to the longitudinal direction of the positioning needle 605, so that the slider can move only in a direction perpendicular to the positioning needle 605 but cannot move in a direction parallel to the positioning needle 605. The sliding block and the sliding groove are respectively arranged on one and the other of the scraping plate 503 and the positioning needle 605, in the embodiment, the sliding block is arranged on the scraping plate 503 and is integrally formed with the scraping plate, the sliding groove is arranged on a convex block extending to the side of the positioning needle 605, and the positioning needle 605 can be prevented from being blocked in the up-and-down movement process by the arrangement of the structure.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although more 1. Gun tips are used herein; 101. a large end; 102. a small end; 2. a base; 3. a gun head box; 4. a screen tray; 401. a return groove; 402. a rest platform; 403. a blanking channel; 404. a column; 5. a loading device; 501. a fixed handle; 502. a movable handle; 503. a scraper; 504. a positioning block; 505. an elongated waist hole; 506. a guide sloping block; 507. a limiting device; 508. a trigger; 509. a third link; 510. a fourth link; 511. a first force application member; 512. a second force application member; 513. the first guide sleeve; 514. a second guide sleeve; 6. a positioning device; 601. a positioning button; 602. a return spring; 603. a tension spring; 604. a guide post; 605. a positioning needle; 606. a second link; 607. first link, etc., but does not exclude the possibility of using other terms. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.

Claims

1. A gun head batch boxing system for a pipette gun, the gun head having a large end and a small end; it comprises the following steps:

the base is used for placing the gun head box;

the screen disc comprises a plurality of arranging grooves for arranging unordered gun heads and arranging the unordered gun heads into orderly arranged and blanking channels for the orderly gun heads to fall into a gun head box, and the width of each arranging groove is larger than the diameter of the small end of the gun head but smaller than the diameter of the large end of the gun head;

wherein, the loading device and the screen disc can integrally move relative to the base so as to correspond the blanking channel with the gun head hole on the gun head box;

the orderly arranged gun heads are positioned in the arranging groove, and the big heads face upwards and the small heads face downwards;

the loading device comprises a trigger piece, a connecting rod assembly, a scraping plate and a guide structure, wherein the trigger piece is connected with the scraping plate through the connecting rod structure and drives the scraping plate to move upwards, the guide structure comprises a guide inclined block which guides the scraping plate to move upwards from an initial position and simultaneously far away from a blanking channel, a transverse channel which guides the scraping plate to move towards a direction close to the blanking channel after crossing the top position of a first guide part, and a vertical channel which guides the scraping plate to move downwards to the initial position.

2. The pipette tip batch boxing system of claim 1, wherein the loading device comprises a fixed handle, a movable handle and a scraping plate for pushing the pipette tips to move, the fixed handle is fixedly connected with the screen tray, the movable handle is rotatably and movably connected with the fixed handle, and the movable handle is connected with the scraping plate and drags the scraping plate to move.

3. The pipette tip batch boxing system of claim 2, wherein said scraping plate is rotatably mounted on a movable handle about an axis, and a stopper is provided on the movable handle for limiting the upward rotation position of the scraping plate.

4. A pipette tip mass boxing system in accordance with claim 2 or 3, wherein a return spring for providing a return force to the movable handle is provided between the movable handle and the fixed handle.

5. The pipette tip batch packing system of claim 1 wherein the guide ramp has an inclined guide surface that slopes gradually from bottom to top in a direction away from the blanking channel.

6. The pipette tip batch boxing system in accordance with claim 1 or 5, wherein said transverse channel is provided above a guide ramp.

7. The pipette tip lot box packing system of claim 5 wherein said vertical channel is provided on the other side of the guide ramp from the guide ramp.

8. The pipette tip batch packing system of claim 1 wherein the scraper is connected with a first force application member which applies force in a direction of moving the scraper away from the upper mouth of the blanking passage.

9. The pipette tip batch packing system of claim 6 wherein the blade is further connected with a second force applying member which applies force in a direction to bring the blade closer to the side of the blanking passage.

10. The pipette tip batch boxing system of claim 5, wherein a stopper is provided at the bottom of the vertical channel.

11. The pipette tip batch boxing system in accordance with claim 1, wherein said guide structures are two, each located at two positions on the scraper at a distance from each other.

12. The pipette tip batch boxing system of claim 1, wherein the scraping plate is provided with a plurality of comb teeth, and the number and the positions of the comb teeth are matched with those of the reset groove.

13. The pipette tip batch boxing system as recited in claim 1 or 2, wherein a positioning device for aligning the blanking passage with the tip hole is provided between the base and the screen tray.

14. The pipette tip batch boxing system of claim 13, wherein the positioning device comprises a positioning button capable of moving up and down and a positioning needle capable of pressing the positioning button to move down, the positioning button is arranged on the base, and the positioning needle is arranged on the screen disc and is linked with the loading device.

15. The pipette tip batch packing system of claim 14 wherein the plurality of positioning buttons corresponds to each row of the pipette tip holes, and the positioning buttons are provided with a limiting surface and a guiding surface which are oppositely arranged, wherein the limiting surface is a vertical surface relative to the positioning needle, the guiding surface is an inclined surface opposite to the positioning needle, and the inclined surface can be used for the positioning needle to slide forwards to be propped against the vertical surface.

16. The pipette gun tip lot box system of claim 14 wherein the blade is connected to the positioning needle by a linkage assembly comprising at least one linkage.

17. The pipette tip lot box system of claim 14 wherein the blade is connected to the positioning needle by a sliding structure comprising a slide and a chute, the chute being perpendicular to the length of the positioning needle such that the slide is movable only in a direction perpendicular to the positioning needle and not in a direction parallel to the positioning needle.

18. The pipette tip batch boxing system of claim 17, wherein the slide and chute are provided on one and the other of the scraper and the positioning pin, respectively.

19. The system of claim 1, 14 or 15, wherein a tension spring for pulling the screen tray forward and a guiding mechanism for guiding the screen tray forward are arranged between the base and the screen tray, the guiding mechanism comprises a guiding groove and a guiding column which are matched, the guiding column is arranged on the screen tray, the guiding groove is arranged on the base, the tension spring is positioned in the guiding groove, and two ends of the tension spring are respectively connected to the guiding column and the base.

20. The pipette gun tip lot size boxing system of claim 1, wherein the bottom of the placement tank has a rest platform for resting the ordered array of gun tips.

21. The pipette tip batch boxing system of claim 20, wherein a blocking rib is arranged between the upper opening part of the blanking channel and the supporting and placing platform, and one side of the blocking rib, which is close to the supporting and placing platform, is an inclined plane.

22. The pipette tip batch boxing system in accordance with claim 20, wherein a top surface of an upper mouth of said blanking channel is higher than a bottom surface of a supporting rest platform.

23. The pipette tip batch boxing system of claim 1, wherein the plurality of arranging grooves are parallel to each other and are obliquely arranged.

24. The pipette gun tip lot size packing system of claim 23 wherein said screen tray has a shroud around the periphery of said plurality of return slots to prevent the gun tips from jumping out of the screen tray.