CN212099655U

CN212099655U - Gun head batch boxing system of liquid-transfering gun

Info

Publication number: CN212099655U
Application number: CN202020146849.0U
Authority: CN
Inventors: 王国胜; 叶馨霖; 杨旭铭
Original assignee: Hangzhou Duotai Technology Co ltd
Current assignee: Hangzhou Duotai Technology Co ltd
Priority date: 2019-02-21
Filing date: 2020-01-23
Publication date: 2020-12-08
Anticipated expiration: 2030-01-23

Abstract

The utility model discloses a gun head batch boxing system of a pipette, which comprises a base for placing a gun head box; the screen tray comprises a plurality of arrangement grooves for placing unordered gun heads and arranging the unordered gun heads in an ordered manner and a blanking channel for the ordered gun heads to fall into the gun head box; the loading device is used for pushing the orderly-arranged gun heads to move to the blanking channel from the arranging groove; the loading device and the sieve tray can integrally move relative to the base so as to enable the blanking channel to correspond to the gun head hole in the gun head box. When the tool is used, the base fixes the pipette tip box, and the screen disc enables the pipette tips to be vertically arranged. At this time, the movable handle can be used for driving the scraper to scrape and transfer the gun head, and the gun head is placed into the gun head box. Meanwhile, the upper devices such as the scraper plate, the sieve plate and the like move forwards along the positioning button and move to the position above the gun head hole of the next row of pipette gun head box, and the steps are repeated to quickly insert the gun head of the pipette gun.

Description

Gun head batch boxing system of liquid-transfering gun

Technical Field

The utility model relates to an instrument of high-efficient cartridge pipettor rifle head particularly is a rifle head of pipettor system of boxing in batches, can pack into the pipettor rifle head box in fields experiments such as biology, chemistry high-efficiently.

Background

In research fields, such as medical, pharmaceutical, protein research, genetic research, biological research, drug development laboratories, and other biotechnology fields, it is often necessary to use pipettes to manipulate laboratory samples in a laboratory setting. A pipette is used to draw a volume of liquid into the pipette and then mix the liquids into one volume or dispense into multiple volumes. In a laboratory, a small amount of or trace liquid is removed, pipettes of different specifications can be used, and different pipettes are matched with tips of different sizes. After the pipette tips are produced, the pipette tips are generally inserted into a pipette box by a boxing machine and then transported to a storage box. At present, the only micro-pipetting device in the field of molecular biology research is the pipette, which also plays a unique value with the development of molecular biology. The pipette tip used in the laboratory is of a conical structure, is made of plastic and has different specifications, the shortest length is 40mm, the longest length is 80mm, and the diameter of the upper end of the pipette tip is changed along with the length of the pipette tip and is from 4mm to 10 mm.

In the fields of medicine, protein research, gene research, biological research, drug development laboratories and the like, a great deal of work time is consumed to insert a pipette tip. The adoption of a pure manual insertion pipette tip consumes a large amount of time and labor, and a device which can improve the insertion efficiency, is convenient to popularize and has low cost is required to replace the manual insertion pipette tip insertion device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome exist among the above-mentioned prior art not enough and provide a rifle head of pipette dress box system in batches, its work that can the efficient accomplish the cartridge pipettor rifle head.

In order to solve the technical problem, the utility model discloses a following technical means:

the utility model provides a rifle head batch boxing system of liquid-transfering gun, it includes:

the base is used for placing the gun head box;

the screen tray comprises a plurality of arrangement grooves for placing unordered gun heads and arranging the unordered gun heads in an ordered manner and a blanking channel for the ordered gun heads to fall into the gun head box;

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

the loading device and the sieve tray can integrally move relative to the base so as to enable the blanking channel to correspond to the gun head hole in the gun head box.

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

as a further improvement, the loading device comprises a fixed handle, a movable handle and a scraper for pushing the gun head to move, the fixed handle is fixedly connected with the sieve tray, the movable handle is rotatably and movably connected to the fixed handle, and the movable handle is connected with the scraper and drags the scraper to move. Preferably, the scraper can be rotatably mounted on the movable handle around an axis, and the movable handle is provided with a limiting device for limiting the upward rotating position of the scraper. Preferably, a return spring for providing a restoring force to the movable handle is provided between the movable handle and the fixed handle.

As a further improvement, the loading device comprises a trigger part, a connecting rod assembly, a scraper and a guide structure, wherein the trigger part is connected with the scraper through the connecting rod structure and drives the scraper to move upwards, the guide structure comprises a guide inclined block which guides the scraper to move upwards from an initial position and simultaneously is far away from a blanking channel, a transverse channel which guides the scraper to move towards the direction close to the blanking channel after the guide inclined block crosses the top position of the first guide part, and a vertical channel which guides the scraper to move downwards to the initial position. Preferably, the inclined guide block is provided with an inclined guide surface which is inclined from bottom to top gradually to a direction away from the blanking channel. Preferably, the transverse channel is arranged above the guide sloping block. Preferably, the vertical channel is arranged on the other side of the guide sloping block relative to the guide sloping surface. Preferably, the scraper is connected with a first force application component which applies force along the direction that the scraper is far away from the upper opening part of the blanking channel. Preferably, the scraper is further connected with a second force application component which applies force to the direction that the scraper is close to the side surface of the blanking channel. Preferably, the bottom of the vertical channel is provided with a limiting device. The two guide structures are respectively positioned at two positions which are separated by a certain position on the scraper. Preferably, the scraper is provided with a plurality of comb teeth, and the number and the positions of the comb teeth are suitable for the arrangement grooves.

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 pressing the positioning button to move down, the positioning button is arranged on the base, and the positioning needle is arranged on the sieve tray and linked with the loading device. Preferably, the locating button is a plurality of, and it is corresponding to every line of rifle head hole, and has spacing face and the spigot surface that an opposition set up on this locating button, and this spacing face is for the vertical face of pilot pin, and this spigot surface is the inclined plane for carrying on the back the pilot pin, and this inclined plane can supply the pilot pin landing forward to offset with the vertical face. Preferably, the scraper is connected with the positioning pin through a connecting rod assembly, and the connecting rod assembly comprises at least one connecting rod.

As a further improvement, the scraping plate is connected with the positioning needle through a sliding structure, and the sliding structure comprises a sliding block and a sliding groove, wherein the sliding groove is perpendicular to the length direction of the positioning needle, so that the sliding block can only move in the direction perpendicular to the positioning needle but can not move in the 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, be equipped with the extension spring that the pulling sieve tray moved forward and provide the guiding mechanism of direction for the sieve tray moves forward between base and the sieve tray, guiding mechanism includes the guide way and the guide post of looks adaptation, the guide post sets up on the sieve tray, and the guide way sets up on the base, the extension spring is located the guide way, and its both ends are connected respectively on guide post and base.

As a further improvement, the bottom of the homing groove is provided with a resting platform for resting orderly arranged gun heads. Preferably, a blocking rib is arranged between the upper opening part of the blanking channel and the supporting and placing platform, and one side, close to the supporting and placing platform, of the blocking rib 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 homing slots are multiple, parallel to each other and obliquely arranged. Preferably, the sieve tray is provided with a coaming plate surrounding the periphery of the plurality of homing slots to prevent the lance heads from jumping out of the sieve tray. The width of the homing 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.

Owing to adopted above technical scheme, the utility model discloses following beneficial technological effect has:

the utility model discloses can be with the rifle head of unordered liquid-transfering gun to the orderly state is put to push it in the blanking passageway, the rifle head box of placing on the base is again loaded into to the reloading, still is equipped with positioner on the base, makes the blanking passageway can align with each line rifle head hole on the rifle head box, so the utility model discloses can conveniently and high-efficiently cartridge rifle head, practiced thrift a large amount of manpowers and time and carry out cartridge rifle head work, also can practice thrift and purchase box-packed rifle head, reduce the experiment cost. The tool is simple to use, low in cost and convenient to popularize.

Drawings

FIG. 1 is a schematic structural view of a gun head of a liquid-transfering gun.

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 back structural view of a sieve tray in the first embodiment.

Fig. 5 is a structural view of a 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 back structural view of a sieve tray of the second embodiment.

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

Description of reference numerals:

1. a gun head; 101. a large end; 102. a small end; 2. a base; 3. a cartridge for the gun head; 4. a sieve tray; 401. a homing slot; 402. a resting platform; 403. a blanking channel; 404. a column; 5. a loading device; 501. fixing a handle; 502. a movable handle; 503. a squeegee; 504. positioning blocks; 505. a long waist hole; 506. a guide oblique 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. a 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 pin; 606. a second link; 607. a first link.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent 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 orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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

The first embodiment is as follows:

the pipette tip 1 of the pipette as 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 is used for inserting into a container to introduce a solution, and the large end 101 is used for being connected with an output port of the pipette. When loaded into the cartridge 3, the small end 102 faces downward and the large end 101 faces upward.

A system for batch boxing of tips 1 of pipette guns as shown in figures 2, 3 and 4, comprising: the base 2 is used for placing the gun head box 3; the screen tray 4 comprises a plurality of arrangement grooves 401 for placing unordered gun heads 1 and arranging the unordered gun heads into an ordered arrangement, and a blanking channel 403 for enabling the ordered gun heads 1 to fall into the gun head box 3; the loading device 5 is used for pushing the orderly-arranged gun heads 1 to move from the arranging groove 401 to the blanking channel 403; the loading device 5 and the sieve tray 4 can integrally move relative to the base 2 so as to enable the blanking channel 403 to correspond to the holes of the gun heads 1 on the gun head box 3. The orderly arranged lance tips 1 mean that the lance tips 1 are positioned in the containing groove 401, the small ends 102 face downwards, and the large ends 101 face upwards.

As shown in fig. 2 and 7, the loading device 5 includes a fixed handle 501, a movable handle 502 and a scraper 503 for pushing the lance head 1 to move, the fixed handle 501 is fixedly connected with the sieve tray 4, the movable handle 502 is rotatably and movably connected to the fixed handle 501, and the movable handle 502 is connected with the scraper 503 and pulls the scraper 503 to move. The scraping plate 503 is rotatably mounted on the movable handle 502 around an axis, and the movable handle 502 is provided with a limiting device 507 for limiting the upward rotating position of the scraping plate 503. A return spring 602 for providing a restoring force to the movable handle 502 is provided between the movable handle 502 and the fixed handle 501.

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 gripping by a user. The fixed handle 501 and the sieve tray 4 are fixedly connected, and are integrally arranged in the embodiment, and naturally, the split fixed handle 501 and the sieve tray 4 can be fixedly connected together in other fastening connection modes. The movable handle 502 is movably hinged with the fixed handle 501 through a pin shaft, the hinged part of the movable handle 502 and the fixed handle 501 is located at the lower end of the movable handle 502, two ends of the pin shaft are fixed on the fixed handle 501, of course, the pin shaft can also be rotatably supported and installed 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 sieve tray 4, the scraper 503 is connected with the movable handle 502 through a pin, the scraper 503 has a notch, the movable handle 502 has a protrusion, the protrusion can be inserted into the notch, the side walls of the two sides of the notch are respectively provided with a pin hole, the protrusion is also provided with a through pin hole, and the pin passes through the pin hole on the scraper 503 and the pin hole on the movable handle 502 to connect the two. In order to keep the scraper 503 and the movable handle 502 at a fixed angle, the pin and the pin hole are tightly fitted to prevent the scraper 503 from falling down and blocking the parked gun tip magazine 3 from falling onto the resting platform 402.

In order to prevent the scraper 503 from being forced to turn upwards so that the scraper 503 cannot contact the ordered lance head 1 on the resting platform 402, as shown in fig. 2 and fig. 7, a limiting device 507 is provided on the movable handle 502 in this embodiment, and the limiting device 507 and the movable handle 502 are tightly fitted. In addition, a torsion spring is further disposed between the movable handle 502 and the fixed handle 501, and two 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 the user releases the movable handle 502.

As shown in fig. 3 and 4, the bottom of the settling tank 401 is provided with a resting platform 402 for resting orderly arranged lance tips 1, the disordered lance tips 1 are orderly arranged at the lower part of the settling tank 401 after being screened by the settling tank 401, and the lowermost lance tips 1 are positioned on the resting platform 402. In order to prevent the lance tip 1 on the resting platform 402 from automatically falling into the blanking channel 403 after being pressed by the lance tip 1 above, a blocking rib is arranged between the upper opening of the blanking channel 403 and the resting platform 402, and an inclined plane is arranged on one side of the blocking rib close to the supporting resting platform 402. The top surface of the upper mouth of the blanking channel 403 is higher than the bottom surface of the supporting platform 402. The plurality of the nesting grooves 401, in this embodiment 12, are parallel to each other and are disposed in an inclined manner. The sieve tray 4 is provided with a coaming plate surrounding the periphery of the plurality of the homing slots 401 to prevent the lance head 1 from jumping out of the sieve tray 4. In order to prevent the lance tip 1 from falling from the settling groove 401, the width of the settling groove 401 is larger than the diameter of the small end 102 of the lance tip 1 but smaller than the diameter of the large end 101 of the lance tip 1, so that the lance tip 1 faces downward from the small end 102 and upward from the large end 101 in the settling groove 401.

As shown in fig. 5 and 6, a positioning device 6 for aligning the blanking channel 403 with the hole of the lance head 1 is arranged between the base 2 and the sieve tray 4. The positioning device 6 comprises a positioning button 601 capable of moving up and down and a positioning needle 605 capable of pressing the positioning button 601 to move down, 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 cylindrical spring respectively push 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 arranged on the base 2. The positioning needle 605 is arranged on the sieve tray 4 and is coupled with the loading means 5. The number of the positioning buttons 601 is a plurality, the number of the positioning buttons corresponds to the number of the holes of the gun head 1 on the gun head box 3, and the positioning buttons 601 correspond to the holes of the gun head box 1, and the number of the positioning buttons 601 is 8 in the embodiment. The positioning button 601 has a limiting surface and a guiding surface which are oppositely arranged, the limiting surface is a vertical surface relative to the positioning pin 605, the guiding surface is an inclined surface opposite to the positioning pin 605, and the inclined surface can be used for the positioning pin 605 to slide forwards to be abutted against the vertical surface.

As shown in fig. 7, the scraper 503 is connected to the positioning pin 605 via a link assembly, which includes a first link 607 and a second link 606, one end of the first link 607 is movably hinged to the second link 606, the other end is movably hinged to the scraper 503, and the other end of the second link 606 is movably hinged to the positioning pin 605. The screen tray 4 is provided with a sliding groove for the up-and-down movement of the positioning needle 605, 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 sieve tray 4 to move forward and a guide mechanism for guiding the sieve tray 4 to move forward are arranged between the base 2 and the sieve tray 4, the guide mechanism comprises a guide groove and a guide post 604 which are matched with each other, the guide post 604 is connected with the sieve tray 4 and can move along with the sieve tray 4, the guide groove is arranged on the base 2, the tension spring 603 is located in the guide groove, and two ends of the tension spring are respectively connected to the guide post 604 and the base 2. The guide post 604 includes two portions, a vertical portion inserted into the guide slot and a horizontal portion contacting the top surface of the guide slot to provide a positioning function for the guide post 604 at the upper and lower positions of the guide slot. A cavity is arranged in the middle of the vertical part of the guide column 604, the vertical column 404 extending downwards is arranged on the sieve tray 4, and the connection between the sieve tray 4 and the base 2 can be realized by inserting the vertical column 404 into the cavity.

In this embodiment, when the user needs to pack the gun heads 1 into the box, the gun head box 3 is firstly placed on the base 2, then the disordered gun heads 1 are placed on the sieve tray 4, and the sieve tray 4 is shaken to place the disordered gun heads 1 into an ordered state. Then, the sieve tray 4 is connected with the base 2, that is, the upright column 404 on the sieve tray 4 is inserted into the guide column 604, the positioning needle 605 is made to abut against the vertical positioning surface of the positioning button 601, then the movable handle 502 is gripped, the movable handle 502 drives the scraper 503 to move obliquely downwards in the process of approaching to the fixed handle 501, the orderly arranged gun heads 1 on the resting platform 402 are pushed into the blanking channel 403, and the gun heads 1 fall into the holes of the gun heads 1 on the gun head box 3 from the blanking channel 403. During the movement of the scraper 503, the positioning pin 605 moves upwards and gradually disengages from the positioning buttons 601, when the scraper 503 pushes the tips 1 into the blanking channel 403, the positioning pin 605 disengages from the positioning buttons 601, moves forwards under the action of the tension spring 603, and simultaneously the sieve tray 4 moves downwards under the action of gravity to fall 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 meanwhile, the blanking channel 403 is aligned with the holes of the other row of tips 1, so that preparation is made for the next working cycle. The utility model discloses a structure very simple, it is also very convenient to operate, has realized batch dress box, has saved the manual work greatly, has also improved rifle head 1 dress box's efficiency.

Example two:

as shown in fig. 8, 9 and 10, the first basic structural embodiment of the present embodiment is substantially the same, except that the loading device 5 has a different structure, the loading device 5 in the present embodiment includes a trigger 508, a link assembly, a scraper 503 and a guiding structure, the trigger 508 connects the scraper 503 via the link assembly and drives it to move upward, the guiding structure includes a guiding inclined block 506 that guides the scraper 503 to move upward from an initial position and simultaneously move away from the blanking channel 403, a transverse channel that guides the scraper 503 to move toward the blanking channel 403 after passing over a top position of a first guiding portion, and a vertical channel that guides the scraper 503 to move downward to the initial position. The inclined guide block 506 has an inclined guide surface which is inclined from bottom to top in a direction away from the blanking channel 403. The transverse channel is provided above the ramp block 506. The vertical channel is provided on the other side of the guide ramp 506 with respect to the guide ramp. The scraper 503 is connected to a first biasing member for biasing the scraper 503 in a direction away from the upper opening of the material receiving passage 403. The scraper 503 is further connected to a second biasing member for biasing the scraper 503 in a direction to approach the side surface of the blanking passage 403. The bottom of the vertical channel has a stop 507. The two guide structures are located at two positions on the scraper 503, which are separated by a certain position. The scraper 503 has a plurality of comb teeth, and the number and position of the comb teeth are adapted to the arrangement groove 401.

As shown in fig. 8 and 10, the triggering member 508 is a sear, the linkage assembly includes a third link 509 and a fourth link 510, and the sear, the third link 509 and the fourth link 510 are each a lever structure supported at the middle part, and the middle part is pivotally connected to an extension part of the sieve tray 4. The button machine is movably hinged with one end of the third connecting rod 509, the other end of the third connecting rod 509 is movably hinged with one end of the fourth connecting rod 510, the other end of the fourth connecting rod 510 is movably hinged with one end of the scraping plate 503, the other end of the button machine is freely arranged, and when a user pulls the free end of the button machine, the third connecting rod 509 can drive the tail end of the fourth connecting rod 510 to be lifted upwards and drive the scraping plate 503 to move upwards.

As shown in fig. 8 and 9, the scraper 503 is located on the back of the screen tray 4, and two guide sloping blocks 506 are respectively disposed on the back of the screen tray 4 and at two ends of the scraper 503, when the scraper 503 is driven by the fourth link 510 on the guide sloping blocks 506 to move upwards, under the action of the guide sloping surfaces on the guide sloping blocks 506, a displacement away from the blanking channel 403 and the resting platform 402 is generated, and when the scraper 503 reaches the top of the guide sloping blocks 506, the scraper 503 is located just outside the resting platform 402 so as to push the lance tip 1 to fall into the blanking channel 403. The scraper 503, when continuing to move upwards, will quickly push the lance tip 1 from the rest platform 402, over the guide ramp 506, into the blanking channel 403, and fall from the blanking channel 403.

The scraping plate 503 is further sleeved with a first guide sleeve 513 and a second guide sleeve 514, the scraping plate 503 penetrates 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 vertical direction, and the scraping plate 503 penetrates 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 component is connected to the first guide sleeve 513, wherein two ends of the first force applying component are respectively connected to the lower portion of the guide sleeve and the screen tray 4 to generate an acting force for pulling the guide sleeve and the scraper 503 to move downward, which can also be interpreted as an acting force for making the scraper 503 far away from the upper opening portion of the blanking channel 403 and close to the lower opening portion thereof, in this embodiment, the first force applying component is a tension spring. The two ends of the second force-applying component are respectively connected to the side of the second guide sleeve 514 and the screen tray 4 to generate an acting force for pulling the second guide sleeve 514 and the scraper 503 to the inner side to be close to the screen tray 4, which can also be interpreted as an acting force for making them close to the blanking channel 403.

As shown in fig. 8 and 9, a transverse channel for the end of the scraping plate 503 to pass through is provided above the inclined guide block 506, so that the scraping plate 503 can rapidly 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 inclined guide block 506, and after the scraping plate 503 approaches the blanking channel 403, because a vertical channel for the scraping plate 503 to pass through is provided behind the inclined guide block 506, under the action of the first force application component, the scraping plate 503 moves downwards from the vertical channel, and under the action of a bottom limiting device 507 of the vertical channel, the scraping plate 503 returns to a position below the inclined guide block 506 again. In the process that the scraper 503 moves upward along the slope surface of the guide sloping block 506, the first force application member and the second force application member simultaneously store energy, and generate a downward pulling force and an inward pulling force on the scraper 503 respectively.

As shown in fig. 9, the scraper 503 is connected to the positioning pin 605 by a sliding structure including a slider and a sliding groove perpendicular to the length direction of the positioning pin 605, so that the slider can move only in the direction perpendicular to the positioning pin 605 and cannot move in the direction parallel to the positioning pin 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 the two are integrally formed, the sliding groove is arranged on a convex block extending towards the side on the positioning needle 605, and the arrangement of the structure can prevent the positioning needle 605 from being blocked in the up-and-down moving process.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although 1. lance tip is used more herein; 101. a large end; 102. a small end; 2. a base; 3. a cartridge for the gun head; 4. a sieve tray; 401. a homing slot; 402. a resting platform; 403. a blanking channel; 404. a column; 5. a loading device; 501. fixing a handle; 502. a movable handle; 503. a squeegee; 504. positioning blocks; 505. a long waist hole; 506. a guide oblique 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 applying member; 513. a 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 pin; 606. a second link; 607. first link, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A gun head batch boxing system of a pipette comprises a base, wherein the base is used for placing a gun head box; it is characterized by also comprising:

the screen tray comprises a plurality of arrangement grooves for placing unordered gun heads and arranging the unordered gun heads in an ordered arrangement, and a blanking channel for enabling the orderly arranged gun heads to fall into the gun head box;

2. The batch boxing system for the gun heads of the pipette guns according to claim 1, wherein the loading device comprises a fixed handle, a movable handle and a scraper for pushing the gun heads to move, the fixed handle is fixedly connected with the sieve tray, the movable handle is rotatably and movably connected to the fixed handle, and the movable handle is connected with the scraper and drives the scraper to move.

3. The pipette head batch boxing system of claim 2, wherein the scraper is rotatably mounted on the movable handle around an axis, and the movable handle is provided with a limiting device for limiting the upward rotating position of the scraper.

4. The pipette head batch boxing system of claim 2 or 3, wherein a return spring for providing a restoring force for the movable handle is arranged between the movable handle and the fixed handle.

5. The batch boxing system for the gun heads of the pipette guns according to claim 1, wherein the loading device comprises a trigger, a connecting rod assembly, a scraper and a guide structure, the trigger is connected with the scraper through the connecting rod structure and drives the scraper to move upwards, the guide structure comprises a guide inclined block which guides the scraper to move upwards from an initial position and simultaneously is far away from the blanking channel, a transverse channel which guides the scraper to move towards the direction close to the blanking channel after the guide inclined block passes over the top position of the first guide part, and a vertical channel which guides the scraper to move downwards to the initial position.

6. The pipette head batch boxing system of claim 5, wherein the guide sloping block is provided with a sloping guide surface which slopes gradually from bottom to top in a direction away from the blanking channel.

7. The pipette head batch boxing system of claim 5 or 6, wherein the transverse channel is arranged above the guide ramp block.

8. The pipette head batch boxing system of claim 6, wherein the vertical channel is arranged on the other side of the guide sloping block relative to the guide sloping surface.

9. The pipette head batch boxing system of claim 5, wherein the scraper is connected with a first force application part which applies force to the scraper in a direction away from the upper opening part of the blanking channel.

10. The pipette head batch boxing system of claim 5, wherein the scraper is further connected with a second force application part which applies force to the scraper in a direction that the scraper is close to the side surface of the blanking channel.

11. The pipette head batch boxing system of claim 8, wherein the bottom of the vertical channel is provided with a limiting device.

12. The pipette head batch boxing system of claim 5 or 6, wherein the number of the guide structures is two, and the two guide structures are respectively located at two positions on the scraper which are separated by a certain position.

13. The pipette tip batch boxing system of claim 5 or 6, wherein the scraper is provided with a plurality of comb teeth, and the number and the positions of the comb teeth are matched with those of the arrangement grooves.

14. The pipette head batch boxing system of claim 2 or 5, wherein a positioning device for aligning the blanking channel with the pipette head hole is arranged between the base and the screen tray.

15. The pipette head batch boxing system of claim 14, 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 sieve tray and linked with the loading device.

16. The batch boxing system for the gun heads of the pipette guns according to claim 15, wherein the positioning button is provided in plurality and corresponds to each row of the gun head holes, and the positioning button is provided with a limiting surface and a guiding surface which are oppositely arranged, 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 abut against the vertical surface.

17. The pipette head batch boxing system of claim 15, wherein the scraper is connected to the positioning pin by a connecting rod assembly comprising at least one connecting rod.

18. The pipette head batch boxing system of claim 15, wherein the scraper is connected with the positioning pin through a sliding structure, and the sliding structure comprises a sliding block and a sliding groove, wherein the sliding groove is perpendicular to the length direction of the positioning pin, so that the sliding block can only move in the direction perpendicular to the positioning pin but not in the direction parallel to the positioning pin.

19. The pipette head batch boxing system of claim 18, wherein the slide block and the chute are respectively arranged on one and the other of the scraper and the positioning pin.

20. The pipette head batch boxing system of the pipette gun according to claim 1, 15 or 16, wherein a tension spring for pulling the sieve tray to move forwards and a guide mechanism for guiding the sieve tray to move forwards are arranged between the base and the sieve tray, the guide mechanism comprises a guide groove and a guide column which are matched, the guide column is arranged on the sieve tray, the guide groove is arranged on the base, the tension spring is positioned in the guide groove, and two end parts of the tension spring are respectively connected to the guide column and the base.

21. The pipette head batch boxing system of claim 1, wherein the bottom of the nesting groove is provided with a resting platform for resting the orderly arranged pipette heads.

22. The pipette head batch boxing system of claim 21, 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 close to the supporting and placing platform is an inclined plane.

23. The pipette head batch boxing system of claim 21, wherein the top surface of the upper opening of the blanking channel is higher than the bottom surface of the supporting platform.

24. The pipette head batch boxing system of claim 1, wherein the arrangement grooves are parallel to each other and are arranged in an inclined manner.

25. The pipette tip batch boxing system of claim 24, wherein the screen tray has a shroud around the periphery of the plurality of parking slots to prevent the pipette tips from jumping out of the screen tray.

26. The pipette tip batch boxing system of claim 24, wherein the width of the nesting groove is greater than the diameter of the small end of the pipette tip but less than the diameter of the large end of the pipette tip.