Auxiliary tool for replacing gun head of multi-channel pipette

Abstract

The utility model discloses an auxiliary tool for replacing a gun head of a multi-channel pipette, which belongs to the technical field of pipettes and comprises a screening box and a comb plate matched with the screening box. A plurality of screening channels distributed in a linear array mode are formed in the bottom of the screening box in a penetrating mode, openings are reserved in the same ends of all the screening channels, an upper cross beam integrally formed with the screening box is arranged over the openings, and a plurality of plug pins which are distributed in a linear array mode and can slide up and down are installed on the upper cross beam in a sliding mode. Each bolt can slide up and down into the screening channel one by one; guide rails are fixed to the two ends of the sorting and combing plate correspondingly. Guide grooves matched with the guide rails for use are fixed to the bottom of the sorting and screening box. And a plurality of slivers which are distributed in a linear array are detachably arranged on the comb selecting plate in a penetrating and sleeving manner. According to the tool, by changing the positions of the plug pins and the number of the comb strips, packing of packing boxes of different specifications can be met, such as 8 * 8 type packing boxes, 10 * 10 type packing boxes, 12 * 12 type packing boxes and the like, the effect that one tool has multiple purposes is truly achieved, and universality is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pipettes, in particular to an auxiliary tool for replacing the tips of a multi-channel pipette. Background Technique

[0002] The pipette tip, also known as the liquid suction nozzle, is one of the important accessories of the pipette. The pipette tip is a key component for the pipette to perform the functions of liquid aspiration and release. The pipette tip is usually made of polypropylene plastic, which has the characteristics of high chemical inertness and a wide range of operating temperatures. As a disposable consumable, the pipette tip has a large consumption and a small volume. Especially when doing molecular experiments, the daily consumption of tips may be hundreds or even thousands. At present, the tips produced by tip manufacturers are mainly placed and sold in packaging boxes.

[0003] In the existing patent literature, a patent with the publication number CN 217962610 U and the name of "an auxiliary tool for loading pipette tips into a box" has fixed comb teeth on the comb plate and fixed sieve bars on the sieve body. Therefore, it can only meet the filling of packaging boxes of a fixed model. There are many models of packaging boxes on the market, such as 8*8 type, 10*10 type, 12*12 type, etc. In order to meet the requirements of these numerous models of packaging boxes, only auxiliary tools adapted to them can be manufactured correspondingly, resulting in the inability to achieve the effect of "one tool for multiple uses", and its versatility is relatively low. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an auxiliary tool for replacing the tips of a multi-channel pipette. By changing the position of the pin and the number of comb bars, this tool can meet the filling of packaging boxes of different specifications, such as 8*8 type, 10*10 type, 12*12 type, etc., and truly achieve the effect of "one tool for multiple uses" with high versatility.

[0005] To solve the above technical problems, the technical solution of the utility model is realized as follows:

[0006] An auxiliary tool for replacing the tips of a multi-channel pipette, comprising a selection sieve box and a selection comb plate used in cooperation with the selection sieve box; a plurality of sieve channels linearly arrayed are formed through the bottom of the selection sieve box, and openings are reserved at the same end of all the sieve channels. A upper cross beam integrally formed with the selection sieve box is arranged directly above the opening. A plurality of pins linearly arrayed and capable of sliding up and down are slidably mounted on the upper cross beam, and each pin can slide up and down into the sieve channel one by one; guide rails are respectively fixed at both ends of the selection comb plate, and guide grooves used in cooperation with the guide rails are fixed at the bottom of the selection sieve box; a plurality of comb bars linearly arrayed are detachably sleeved through the selection comb plate; wherein, the total number of sieve channels in the selection sieve box is equal to the maximum number of comb bars sleeved on the selection comb plate; the cross sections of the pins and the comb bars are both circular, and the cross section of the sieve channel is square; the diameters of the pins and the comb bars are equal to the width of the sieve channel, and the distance between every two adjacent comb bars is equal to the width of the sieve channel. When the selection comb plate is inserted into the guide groove through the guide rail, at this time, the comb bars and the sieve channels are crisscrossed and the tips in the sieve channels are evenly separated. At this time, each separated tip can be correspondingly inserted into the placement holes of the packaging box one by one.

[0007] Adopting the above scheme, by changing the positions of the pins and the number of the comb bars, the tool can meet the filling requirements of different specifications of packaging boxes, such as 8*8 type, 10*10 type, 12*12 type, etc., and truly realizes the effect of "one tool for multiple uses", with high versatility.

[0008] As a preferred embodiment of an auxiliary tool for replacing the tips of a multi-channel pipette, a plurality of rubber sleeves one linearly arrayed are adhesively fixed on the upper cross beam, and the pins are slidably mounted in the rubber sleeves one; wherein, the fitting relationship between the pins and the rubber sleeves one is interference fit.

[0009] Adopting the above scheme, in order to ensure the stability of the pins after sliding, the pins are slidably mounted in the rubber sleeves one, and the two are in interference fit, so as to improve the reliability of the pins after sliding.

[0010] As a preferred embodiment of an auxiliary tool for replacing the tips of a multi-channel pipette, a plurality of rubber sleeves two linearly arrayed are adhesively fixed on the selection comb plate, and the comb bars are detachably mounted in the rubber sleeves two; wherein, the fitting relationship between the comb bars and the rubber sleeves two is interference fit.

[0011] Adopting the above scheme, in order to ensure the stability of the comb bars after installation, the comb bars are installed in the rubber sleeves two, and the two are in interference fit, so as to improve the reliability of the comb bars after installation.

[0012] As a preferred embodiment of an auxiliary tool for replacing the tips of a multi-channel pipette, symmetric side ear plates I are integrally formed on both sides of the selection sieve box; a side ear plate II is integrally formed on one side of the selection comb plate. With the above solution, in order to facilitate the operation of the selection sieve box and the selection comb plate, side ear plates are installed on the sides of both. When shaking the selection sieve box, the side ear plate I of the selection sieve box can be held by hand, and when inserting or removing the selection comb plate, the side ear plate II can be held by hand, which will be more convenient during operation.

[0013] As a preferred embodiment of an auxiliary tool for replacing the tips of a multi-channel pipette, the edge of the upper opening of the sieve channel is chamfered so that the upper opening of the sieve channel forms a flared opening.

[0014] With the above solution, in order to facilitate the tip to enter the sieve channel faster after shaking, the upper opening of the sieve channel is set as a flared opening, so as to facilitate the tip to enter the sieve channel faster.

[0015] After adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0016] 1. By changing the position of the plug and the number of comb teeth, the tool can meet the filling of different specifications of packaging boxes, such as 8*8 type, 10*10 type, 12*12 type, etc., and truly achieve the effect of "one tool with multiple uses", and its versatility is relatively high;

[0017] 2. In order to ensure the stability of the plug after sliding, the plug is slidably installed in the first rubber sleeve, and the two are in interference fit to improve the reliability of the plug after sliding;

[0018] 3. In order to ensure the stability of the comb teeth after installation, the comb teeth are installed in the second rubber sleeve, and the two are in interference fit to improve the reliability of the comb teeth after installation;

[0019] 4. In order to facilitate the operation of the selection sieve box and the selection comb plate, side ear plates are installed on the sides of both. When shaking the selection sieve box, the side ear plate I of the selection sieve box can be held by hand, and when inserting or removing the selection comb plate, the side ear plate II can be held by hand, which will be more convenient during operation;

[0020] 5. In order to facilitate the tip to enter the sieve channel faster after shaking, the upper opening of the sieve channel is set as a flared opening, so as to facilitate the tip to enter the sieve channel faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 This is the three-dimensional structure of the present utility model when used for filling 10*10 type packaging boxes Figure 1 ;

[0023] Figure 2 This is the three-dimensional structure of the present utility model when used for filling 10*10 type packaging boxes Figure 2 ;

[0024] Figure 3 This is the three-dimensional structure of the present utility model when used for filling 10*10 type packaging boxes Figure 3 ;

[0025] Figure 4 is Figure 1 the three-dimensional structure diagram of the selected sieve box in

[0026] Figure 5 is Figure 4 the exploded view of

[0027] Figure 6 is Figure 5 the partial enlarged view at position A in

[0028] Figure 7 is Figure 1 the three-dimensional structure diagram of the selected comb plate in

[0029] Figure 8 is Figure 7 the exploded view of

[0030] Markings in the figure: 1 - selected sieve box; 2 - sieve channel; 3 - upper cross beam; 4 - bolt; 5 - selected comb plate; 6 - guide rail; 7 - guide groove; 8 - comb bar; 9 - gun head; 10 - packaging box; 11 - rubber sleeve one; 12 - rubber sleeve two; 13 - side ear plate one; 14 - side ear plate two. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0032] Such as Figures 1 to 8As shown in the figure, a multi-channel pipette tip replacement auxiliary tool is used to fill the pipette tips 9 into the packaging box 10. It includes a selection sieve box 1 and a selection comb plate 5 used in cooperation with the selection sieve box 1. The bottom of the selection sieve box 1 is provided with a plurality of linearly arrayed sieve channels 2 penetrating through, and an opening is reserved at the same end of all the sieve channels 2. Above the opening, there is an upper cross beam 3 integrally formed with the selection sieve box 1. A plurality of linearly arrayed and slidable pins 4 are slidably installed on the upper cross beam 3, and each pin 4 can slide up and down into the sieve channel 2 one by one. Guide rails 6 are respectively fixed at both ends of the selection comb plate 5, and guide grooves 7 used in cooperation with the guide rails 6 are fixed at the bottom of the selection sieve box 1. A plurality of linearly arrayed comb bars 8 are detachably sleeved through the selection comb plate 5. Among them, the total number of the sieve channels 2 in the selection sieve box 1 is equal to the maximum number of the comb bars 8 sleeved on the selection comb plate 5. The cross-sections of the pins 4 and the comb bars 8 are both circular, and the cross-section of the sieve channel 2 is square. The diameters of the pins 4 and the comb bars 8 are equal to the width of the sieve channel 2, and the distance between every two adjacent comb bars 8 is equal to the width of the sieve channel 2. When the selection comb plate 5 is inserted into the guide groove 7 through the guide rail 6, at this time, the comb bars 8 and the sieve channels 2 are criss-crossed and the pipette tips 9 in the sieve channels 2 are evenly separated. At this time, each separated pipette tip 9 can be adaptively inserted into the placement hole of the packaging box 10, and the packaging box 10 is specifically a 10*10 type. By changing the position of the pins 4 and the number of the comb bars 8, this tool can meet the filling requirements for different specifications of the packaging box 10, truly realizing the effect of "one tool for multiple uses", and it has high versatility.

[0033] As Figure 6 shown, a plurality of linearly arrayed rubber sleeves 11 are adhesively fixed on the upper cross beam 3, and the pins 4 are slidably installed in the rubber sleeves 11. Among them, the fitting relationship between the pins 4 and the rubber sleeves 11 is interference fit. In order to ensure the stability of the pins 4 after sliding, the pins 4 are slidably installed in the rubber sleeves 11 and the two are in interference fit, so as to improve the reliability of the pins 4 after sliding.

[0034] As Figure 8 shown, a plurality of linearly arrayed rubber sleeves 12 are adhesively fixed on the selection comb plate 5, and the comb bars 8 are detachably installed in the rubber sleeves 12. Among them, the fitting relationship between the comb bars 8 and the rubber sleeves 12 is interference fit. In order to ensure the stability of the comb bars 8 after installation, the comb bars 8 are installed in the rubber sleeves 12 and the two are in interference fit, so as to improve the reliability of the comb bars 8 after installation.

[0035] As Figure 4 、 Figure 7As shown in the figure, on both sides of the selection and screening box 1, there are also integrally formed symmetric side ear plates one 13; on one side of the selection comb plate 5, there is also integrally formed a side ear plate two 14. In order to facilitate the operation of the selection and screening box 1 and the selection comb plate 5, side ear plates are installed on the sides of both. When shaking the selection and screening box 1, the side ear plate one 13 of the selection and screening box 1 can be held by hand, and when inserting and removing the selection comb plate 5, the side ear plate two 14 can be held by hand, which will be more convenient during operation.

[0036] As Figure 6 shown, the edge of the upper opening of the sieve channel 2 is chamfered, so that the upper opening of the sieve channel 2 forms a flared opening. In order to facilitate the faster entry of the gun head 9 into the sieve channel 2 after shaking, the upper opening of the sieve channel 2 is set as a flared opening, so as to facilitate the faster entry of the gun head 9 into the sieve channel 2.

[0037] The working principle of the present utility model:

[0038] S1. First, pour a number of gun heads 9 into the selection and screening box 1. At this time, it is necessary to ensure that all the pins 4 are inserted into the sieve channels 2. Each sieve channel 2 is blocked by the pin 4, and then the selection and screening box 1 is shaken frequently along the opening direction of the sieve channel 2 until all the gun heads 9 enter the sieve channels 2.

[0039] S2. Select eleven comb bars 8 and insert them onto the selection comb plate 5. There are ten intervals between the eleven comb bars 8. Insert the guide rail 6 into the guide groove 7, and slowly push the selection comb plate 5. At this time, the comb bars 8 and the sieve channels 2 are criss-crossed and the gun heads 9 in the sieve channels 2 are evenly separated to form a 10*10 array distribution. Then each separated gun head 9 can be adaptively filled into the placement holes of the packaging box 10, as Figure 1 shown.

[0040] S3. When all 10*10 gun heads 9 are correspondingly filled into the placement holes of the packaging box 10, slowly pull out the selection comb plate 5 and pull out the ten pins 4 upward so that the pins 4 no longer block the sieve channels 2, as Figure 2 shown.

[0041] S4. Slowly move the selection and screening box 1. At this time, all 10*10 gun heads 9 are filled into the 10*10 type packaging box 10, and the filling of the packaging box 10 can be completed.

[0042] The above is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A multi-channel pipette tip replacement auxiliary tool, comprising a selection sieve box (1) and a selection comb plate (5) used in cooperation with the selection sieve box (1); It is characterized in that: A plurality of sieve channels (2) distributed in a linear array are formed through the bottom of the selection sieve box (1), and openings are reserved at the same end of all the sieve channels (2). An upper cross beam (3) integrally formed with the selection sieve box (1) is arranged directly above the opening. A plurality of pins (4) distributed in a linear array and capable of sliding up and down are slidably mounted on the upper cross beam (3), and each pin (4) can slide up and down into the sieve channel (2) one by one; Guide rails (6) are respectively fixed at both ends of the selection comb plate (5), and a guide groove (7) used in cooperation with the guide rails (6) is fixed at the bottom of the selection sieve box (1); A plurality of comb bars (8) distributed in a linear array are detachably inserted through the selection comb plate (5); When the selection comb plate (5) is inserted into the guide groove (7) through the guide rails (6), at this time, the comb bars (8) and the sieve channels (2) are criss-crossed, and the pipette tips (9) in the sieve channels (2) are evenly separated. Each of the separated pipette tips (9) can be adaptively inserted into the placement holes of the packaging box (10).

2. The multi-channel pipette tip replacement auxiliary tool according to claim 1, characterized in that: The total number of the sieve channels (2) in the selection sieve box (1) is equal to the maximum number of the comb bars (8) sleeved on the selection comb plate (5).

3. The multi-channel pipette tip replacement auxiliary tool according to claim 1, wherein: The cross-sections of the pins (4) and the comb bars (8) are both circular, and the cross-section of the sieve channel (2) is square.

4. The multi-channel pipette tip replacement auxiliary tool according to claim 1, wherein: The diameters of the pins (4) and the comb bars (8) are equal to the width of the sieve channel (2), and the distance between every two adjacent comb bars (8) is equal to the width of the sieve channel (2).

5. The multi-channel pipette tip replacement auxiliary tool according to claim 1, characterized in that: A plurality of first rubber sleeves (11) distributed in a linear array are adhesively fixed on the upper cross beam (3), and the pins (4) are slidably mounted in the first rubber sleeves (11).

6. The multi-channel pipette tip replacement auxiliary tool according to claim 5, characterized in that: The mating relationship between the pins (4) and the first rubber sleeves (11) is interference fit.

7. The multi-channel pipette tip replacement auxiliary tool according to claim 1, wherein: A plurality of second rubber sleeves (12) distributed in a linear array are adhesively fixed on the selection comb plate (5), and the comb bars (8) are detachably mounted in the second rubber sleeves (12).

8. The multi-channel pipette tip replacement auxiliary tool according to claim 7, characterized in that: The mating relationship between the comb bars (8) and the second rubber sleeves (12) is interference fit.

9. The multi-channel pipette tip replacement auxiliary tool according to claim 1, wherein: Symmetric side ear plates one (13) are integrally formed on both sides of the selection sieve box (1); A side ear plate two (14) is integrally formed on one side of the selection comb plate (5).

10. The multi-channel pipette tip replacement auxiliary tool according to any one of claims 1-9, characterized in that: The edge of the upper opening of the sieve channel (2) is chamfered so that the upper opening of the sieve channel (2) forms a flared opening.

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