Variable-pitch transfer device and pipettor

Abstract

The utility model discloses a variable pitch transfer device and pipettor, variable pitch transfer device includes: base and transfer mechanism, transfer mechanism includes: front sliding seat, rear sliding seat, be equipped with a plurality of groups of transfer seat between front sliding seat and rear sliding seat, front sliding seat, rear sliding seat and each transfer seat all slide connection on the base, and the base is equipped with a plurality of groups of transfer seat. A double-distance crossed telescopic mechanism used for separating or folding the transfer seats at the same intervals is arranged among the front sliding seat, the rear sliding seat and the transfer seats, a front driving mechanism is arranged on the front sliding seat, and a rear driving mechanism is arranged on the rear sliding seat; according to the variable-distance transferring device, after the liquid transferring assemblies are mounted on the transferring seats, the liquid transferring assemblies mounted on the transferring seats on the left side of the transferring mechanism and the liquid transferring assemblies mounted on the transferring seats on the right side of the transferring mechanism can be staggered from each other, so that the suction parts of the liquid transferring assemblies are staggered from each other and are arranged in a row; according to the pipettor, the minimum distance between the suction parts can be reduced, a pore plate with a smaller distance can be sucked, and the application range of the pipettor is widened.

Description

Technical Field

[0001] The utility model relates to a variable pitch transfer device, and also relates to a pipette adopting the variable pitch transfer device. Background Art

[0002] A pipette is an essential experimental instrument in all biochemistry laboratories. Through a pipette, biochemical reagents can be transferred into specific experimental vessels. The emergence of multi-channel pipettes can greatly improve the working efficiency of liquid transfer. Our company has developed a pipette. For specific content, refer to the patent disclosure text with the title "Variable Pitch Multi-Channel Adjustment Device and Pipette Comprising the Same" and the application number "201910274540.1". However, this solution still has problems. The liquid transfer assembly includes a liquid transfer pipette and a telescopic part that drives the liquid transfer pipette to move. Since the width of the telescopic part is greater than the width of the liquid transfer pipette, when multiple groups of liquid transfer assemblies are arranged side by side, the width of the telescopic part limits the minimum distance between the liquid transfer pipettes and cannot adapt to the aspiration of experimental reagents when the distance between the wells of the microplate is smaller.

[0003] The present utility model is studied and proposed in view of the deficiencies of the prior art. Summary of the Utility Model

[0004] In view of the above-mentioned technical problem in the prior art that the multi-channel pipette cannot adapt to the aspiration of experimental reagents when the distance between the wells of the microplate is smaller due to the limitation that the width of the telescopic part of the liquid transfer assembly is greater than the width of the liquid transfer pipette. The technical solution adopted by the present utility model to solve its technical problem is: a variable pitch transfer device, which includes: a base and a transfer mechanism. The transfer mechanism includes: a front sliding seat and a rear sliding seat. A plurality of transfer seats are arranged between the front sliding seat and the rear sliding seat. The front sliding seat, the rear sliding seat and each transfer seat are all slidably connected to the base. A double-pitch cross telescopic mechanism is provided between the front sliding seat, the rear sliding seat and the transfer seats for separating or converging the transfer seats at the same distance. A front driving mechanism is provided on the front sliding seat for driving the front sliding seat to move relative to the base. A rear driving mechanism is provided on the rear sliding seat for driving the rear sliding seat to move relative to the base. The front sliding seat, the rear sliding seat and the transfer seats are parallel to each other in pairs.

[0005] The variable pitch transfer device as described above, wherein the base includes: a left substrate, a right substrate, and side plates connected between the left substrate and the right substrate. A plurality of transfer seats slidably connected to the left substrate are provided between the front sliding seat and the rear sliding seat on the left side of the transfer mechanism. A double pitch cross telescopic mechanism for separating or gathering the transfer seats at the same pitch is provided between the transfer seats on the left side of the transfer mechanism. A plurality of transfer seats slidably connected to the right substrate are provided between the front sliding seat and the rear sliding seat on the right side of the transfer mechanism. A double pitch cross telescopic mechanism for separating or gathering the transfer seats at the same pitch is provided between the transfer seats on the right side of the transfer mechanism. The transfer seats on the left side of the transfer mechanism and the transfer seats on the right side of the transfer mechanism are arranged staggeredly with each other.

[0006] The variable pitch transfer device as described above, wherein the double pitch cross telescopic mechanism includes: cross telescopic units corresponding to the transfer seats one by one and connected in sequence from beginning to end. Each of the cross telescopic units includes: a first linkage arm and a second linkage arm. The first linkage arm is arranged crosswise relative to the second linkage arm, and the centers of the first linkage arm and the second linkage arm are simultaneously hinged to the corresponding transfer seat. The ends of the first linkage arm and the second linkage arm between adjacent cross telescopic units are hinged to each other. Two front connecting rods are connected to the head end of the double pitch cross telescopic mechanism. One ends of the two front connecting rods are simultaneously hinged to the front sliding seat. The other end of one of the front connecting rods is hinged to the first linkage arm of the cross telescopic unit at the head end, and the other end of the other front connecting rod is hinged to the second linkage arm of the cross telescopic unit at the head end. Two rear connecting rods are connected to the tail end of the double pitch cross telescopic mechanism. One ends of the two rear connecting rods are simultaneously hinged to the rear sliding seat. The other end of one of the rear connecting rods is hinged to the first linkage arm of the cross telescopic unit at the rear end, and the other end of the other rear connecting rod is hinged to the second linkage arm of the cross telescopic unit at the rear end.

[0007] The variable pitch transfer device as described above, wherein the front drive mechanism includes: a front belt fixedly connected to the base. A front belt pulley and a front motor for driving the front belt pulley to rotate are provided on the front sliding seat.

[0008] The variable pitch transfer device as described above, wherein the rear drive mechanism includes: a rear belt fixedly connected to the base. A rear belt pulley and a rear motor for driving the rear belt pulley to rotate are provided on the rear sliding seat.

[0009] The pipette of the present utility model includes: the variable pitch transfer device as described above. A set of liquid transfer components are respectively provided on each transfer seat of the variable pitch transfer device. Each of the liquid transfer components includes: a suction part and a lifting mechanism. The suction part is arranged at the execution end of the lifting mechanism. The lifting mechanism is arranged on the transfer seat so that the suction part can lift relative to the transfer seat.

[0010] The variable pitch pipetting device as described above, wherein a set of liquid transfer components are provided on the front sliding seat and / or the rear sliding seat.

[0011] The pipette of the present utility model includes: the variable pitch pipetting device as described above. A set of liquid transfer components are respectively provided on each pipetting seat on the left side of the pipetting mechanism, and a set of liquid transfer components are respectively provided on each pipetting seat on the right side of the pipetting mechanism. Each of the liquid transfer components includes: a suction part and a lifting mechanism. The suction part is arranged at the execution end of the lifting mechanism, and the lifting mechanism is arranged on the pipetting seat so that the suction part can lift relative to the pipetting seat. The suction parts of the liquid transfer components on the pipetting seats on the left side of the pipetting mechanism are staggered with each other and are located on the same straight line as the suction parts of the liquid transfer components on the pipetting seats on the right side of the pipetting mechanism.

[0012] The variable pitch pipetting device as described above, wherein a set of liquid transfer components are provided on the front sliding seat and / or the rear sliding seat.

[0013] The beneficial effects of the present utility model are:

[0014] 1. The variable pitch pipetting device of the present utility model is provided with multiple sets of pipetting seats between the front sliding seat and the rear sliding seat, and a double-distance cross telescopic mechanism for separating or gathering the pipetting seats at the same pitch is provided between the front sliding seat, the rear sliding seat and the pipetting seats. By controlling the speeds of the front driving mechanism and the rear driving mechanism, the movement of the pipetting mechanism and the separation or gathering between the pipetting seats are controlled. It has the advantages of simple structure and low cost, and is particularly suitable for the variable pitch pipetting of the liquid transfer components of a multi-channel pipette.

[0015] 2. The variable pitch pipetting device of the present utility model can realize that there are pipetting seats on both the left and right sides of the pipetting mechanism, and the pipetting seats on the left side of the pipetting mechanism are staggered with the pipetting seats on the right side of the pipetting mechanism. When the liquid transfer components are installed on the pipetting seats, the liquid transfer components installed on the pipetting seats on the left side of the pipetting mechanism and the liquid transfer components installed on the pipetting seats on the right side of the pipetting mechanism can be staggered with each other, so that the suction parts of the liquid transfer components are staggered with each other and arranged in a row, which can reduce the minimum distance between the suction parts, realize the suction of a well plate with a smaller distance, and improve the application range of the pipette. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the pipette in the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the pipette in the present utility model with some parts hidden;

[0018] Figure 3Schematic structural diagram of the pipetting assembly of the present utility model mounted on the transfer mechanism;

[0019] Figure 4 Front view schematic diagram of the pipetting assembly of the present utility model mounted on the transfer mechanism and folded up;

[0020] Figure 5 Front view schematic diagram of the pipetting assembly of the present utility model mounted on the transfer mechanism and opened;

[0021] Figure 6 Top view schematic diagram of the pipetting assembly of the present utility model mounted on the transfer mechanism and opened;

[0022] Figure 7 Schematic structural diagram of the double-distance cross telescopic mechanism of the present utility model;

[0023] Figure 8 Schematic structural diagram of the pipetting assembly of the present utility model;

[0024] Figure 9 Schematic structural diagram of the transfer mechanism of the present utility model;

[0025] Figure 10 Exploded schematic diagram of the variable-distance transfer device of the present utility model. Detailed implementation manners

[0026] The following describes in detail the implementation manners of the present utility model with reference to the accompanying drawings.

[0027] As Figures 1 to 10As shown in the figure, the variable pitch transfer device of this embodiment, the variable pitch transfer device 1 includes: a base 11 and a transfer mechanism 12. The transfer mechanism 12 includes: a front sliding seat 121 and a rear sliding seat 122. A plurality of transfer seats 123 are arranged between the front sliding seat 121 and the rear sliding seat 122. The front sliding seat 121, the rear sliding seat 122 and each transfer seat 123 are all slidably connected to the base 11. A double-pitch cross telescopic mechanism 124 is arranged between the front sliding seat 121, the rear sliding seat 122 and the transfer seat 123 for separating or gathering the transfer seats 123 at the same pitch. A front drive mechanism 125 for driving the front sliding seat 121 to move relative to the base 11 is arranged on the front sliding seat 121. A rear drive mechanism 126 for driving the rear sliding seat 122 to move relative to the base 11 is arranged on the rear sliding seat 122. The front sliding seat 121, the rear sliding seat 122 and the transfer seat 123 are pairwise parallel to each other; when the front drive mechanism 125 and the rear drive mechanism 126 drive the front sliding seat 121 and the rear sliding seat 122 to move at the same speed, the transfer mechanism 12 moves along the base 11 at the current speed (referring to the current running speed of the front sliding seat and the rear sliding seat), and the transfer seats 123 maintain the current interval; when the front drive mechanism 125 and the rear drive mechanism 126 drive the front sliding seat 121 and the rear sliding seat 122 to move at different speeds, the transfer seats 123 can be separated or gathered at the same pitch. The variable pitch transfer device of the present invention has a plurality of transfer seats arranged between the front sliding seat and the rear sliding seat, and a double-pitch cross telescopic mechanism for separating or gathering the transfer seats at the same pitch is arranged between the front sliding seat, the rear sliding seat and the transfer seat. By controlling the speeds of the front drive mechanism and the rear drive mechanism, the movement of the transfer mechanism and the separation or gathering between the transfer seats are controlled. It has the advantages of simple structure and low cost, and is particularly suitable for the variable pitch transfer of the liquid transfer components of multi-channel pipettes.

[0028] In this embodiment, the base 11 includes a left substrate 111, a right substrate 112, and side plates 113 connected between the left substrate 111 and the right substrate 112. On the left side of the transfer mechanism 12 and between the front sliding seat 121 and the rear sliding seat 122, multiple transfer seats 123 slidably connected to the left substrate 111 are provided. Between the transfer seats 123 on the left side of the transfer mechanism 12, a double-distance cross telescopic mechanism 124 is provided for separating or converging the transfer seats 123 at the same spacing. On the right side of the transfer mechanism 12 and between the front sliding seat 121 and the rear sliding seat 122, multiple transfer seats 123 slidably connected to the right substrate 112 are provided. Between the transfer seats 123 on the right side of the transfer mechanism 12, a double-distance cross telescopic mechanism 124 is provided for separating or converging the transfer seats 123 at the same spacing. The transfer seats 123 on the left side of the transfer mechanism 12 and the transfer seats 123 on the right side of the transfer mechanism 12 are arranged staggeredly. With the above structure, transfer seats can be provided on both the left and right sides of the transfer mechanism, and the transfer seats on the left side of the transfer mechanism and the transfer seats on the right side of the transfer mechanism are arranged staggeredly. When the pipetting assembly is installed on the transfer seats, the pipetting assemblies on the transfer seats on the left side of the transfer mechanism and the pipetting assemblies on the transfer seats on the right side of the transfer mechanism can be staggered from each other. Furthermore, the suction parts 21 of the pipetting assemblies are staggered from each other and arranged in a row, which can reduce the minimum distance between the suction parts 21, achieve the suction of the well plate with a smaller distance, and improve the application range of the pipette.

[0029] In order to connect all the transplant seats with the front sliding seat and the rear sliding seat and ensure that the distances between the transplant seats are the same, in this embodiment, the double-distance cross telescopic mechanism 124 includes: cross telescopic units 1241 that correspond to the transfer seats 123 one by one and are connected in sequence from beginning to end. Each cross telescopic unit 1241 includes: a first linkage arm 12411 and a second linkage arm 12412. The first linkage arm 12411 is arranged crosswise relative to the second linkage arm 12412, and the centers of the first linkage arm 12411 and the second linkage arm 12412 are simultaneously hinged to the corresponding transfer seat 123. The ends of the first linkage arm 12411 and the second linkage arm 12412 between adjacent cross telescopic units 1241 are hinged to each other. The first ends of two front connecting rods 1242 are connected to the front sliding seat 121 simultaneously. The other end of one of the front connecting rods 1242 is hinged to the first linkage arm 12411 of the cross telescopic unit 1241 at the first end, and the other end of the other front connecting rod 1242 is hinged to the second linkage arm 12412 of the cross telescopic unit 1241 at the first end. The second ends of two rear connecting rods 1243 are connected to the rear sliding seat 122 simultaneously. The other end of one of the rear connecting rods 1243 is hinged to the first linkage arm 12411 of the cross telescopic unit 1241 at the rear end, and the other end of the other rear connecting rod 1243 is hinged to the second linkage arm 12412 of the cross telescopic unit 1241 at the rear end.

[0030] In this embodiment, in order to keep the same spacing between the transfer seats 123 between the front sliding seat 121 and the rear sliding seat 122 all the time, the length of the first linkage arm 12411 is equal to the length of the second linkage arm 12412. As Figure 6 shown, since the first ends of the two front connecting rods 1242 are connected to the front sliding seat 121 simultaneously, the liquid transfer assembly 2 installed on the front sliding seat 121 is located on the right side of the transfer mechanism 12 ( Figure 6 above as shown in the figure). In order to make the liquid transfer assemblies on the front sliding seat and the transfer seats move synchronously and at equal intervals, the length of the first linkage arm 12411 is equal to twice the length of the front connecting rod 1242. Adopting such a design can make the whole more compact and avoid waste of space.

[0031] To enable the front drive mechanism to drive the front sliding seat to move relative to the base, in this embodiment, the front drive mechanism 125 includes: a front belt 1251 fixedly connected to the base 11, a front pulley 1252 provided on the front sliding seat 121 and cooperating with the front belt 1251, and a front motor 1253 for driving the front pulley 1252 to rotate. In addition, the front drive mechanism 125 can also adopt linear drive methods such as lead screw - nut, gear - rack, etc.

[0032] To enable the rear drive mechanism to drive the rear sliding seat to move relative to the base, in this embodiment, the rear drive mechanism 126 includes: a rear belt 1261 fixedly connected to the base 11, a rear pulley 1262 provided on the rear sliding seat 122 and cooperating with the rear belt 1261, and a rear motor 1263 for driving the rear pulley 1262 to rotate. In addition, the rear drive mechanism can also adopt linear drive methods such as lead screw - nut, gear - rack, etc.

[0033] In this embodiment, the pipette includes: the variable - pitch transfer device 1 as described above. A set of liquid - transfer components 2 are respectively provided on each transfer seat 123 of the variable - pitch transfer device 1. Each liquid - transfer component 2 includes: a suction part 21 and a lifting mechanism 22. The suction part 21 is arranged at the execution end of the lifting mechanism 22, and the lifting mechanism 22 is arranged on the transfer seat 123, so that the suction part 21 can lift relative to the transfer seat 123. A set of liquid - transfer components 2 are provided on the front sliding seat 121 and / or the rear sliding seat 122. It can be realized that the variable - pitch transfer device can drive the liquid - transfer components to translate and change the distance between the suction parts, which has the advantages of simple structure and low cost.

[0034] In order to achieve the lowest distance between the suction parts 21, on the basis of the above pipette, a set of liquid transfer components 2 are respectively provided on each liquid transfer seat 123 on the left side of the transfer mechanism 12, and a set of liquid transfer components 2 are respectively provided on each liquid transfer seat 123 on the right side of the transfer mechanism 12. Each of the liquid transfer components 2 includes: a suction part 21 and a lifting mechanism 22. The suction part 21 is arranged at the execution end of the lifting mechanism 22, and the lifting mechanism 22 is arranged on the liquid transfer seat 123, so that the suction part 21 can lift relative to the liquid transfer seat 123; the suction parts 21 of the liquid transfer components 2 on the liquid transfer seats 123 on the left side of the transfer mechanism 12 are staggered from the suction parts 21 of the liquid transfer components 2 on the liquid transfer seats 123 on the right side of the transfer mechanism 12 and are located on the same straight line; a set of liquid transfer components 2 are provided on the front sliding seat 121 and / or the rear sliding seat 122. With the above structure, it can be realized that there are liquid transfer seats on both the left and right sides of the transfer mechanism, and the liquid transfer seats on the left side of the transfer mechanism are staggered from the liquid transfer seats on the right side of the transfer mechanism. When the liquid transfer components are installed on the liquid transfer seats, the liquid transfer components installed on the liquid transfer seats on the left side of the transfer mechanism and the liquid transfer components installed on the liquid transfer seats on the right side of the transfer mechanism can be staggered from each other, so that the suction parts 21 of the liquid transfer components are staggered from each other and arranged in a row, which can reduce the minimum distance between the suction parts 21, realize the suction of the well plate with a smaller distance, and improve the application range of the pipette.

[0035] The above only further illustrates the technical content of the present invention with examples for the convenience of readers to understand more easily, but it does not mean that the implementation mode of the present invention is limited to this. Any technical extension or re - creation made according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. A variable distance transfer device, characterized in that: The variable-distance transfer device (1) comprises: a base (11) and a transfer mechanism (12); the transfer mechanism (12) comprises: a front sliding seat (121) and a rear sliding seat (122); a plurality of transfer seats (123) are arranged between the front sliding seat (121) and the rear sliding seat (122); the front sliding seat (121), the rear sliding seat (122) and each transfer seat (123) are slidably connected to the base (11); the front sliding seat (121), the rear sliding seat (122) and the transfer seat (123) are arranged between the front sliding seat (121), the rear sliding seat (122) and the transfer seat (123) A double-distance cross telescopic mechanism (124) is provided between the front and rear sliding seats (121) for separating or retracting the transfer seat (123) at the same interval, a front driving mechanism (125) is provided on the front sliding seat (121) for driving the front sliding seat (121) to move relative to the base (11), and a rear driving mechanism (126) is provided on the rear sliding seat (122) for driving the rear sliding seat (122) to move relative to the base (11), and the front sliding seat (121), the rear sliding seat (122) and the transfer seat (123) are parallel to each other.

2. The variable distance transfer device according to claim 1, characterized in that: The base (11) comprises: a left base plate (111), a right base plate (112), and a side plate (113) connected between the left base plate (111) and the right base plate (112); a plurality of groups of transfer seats (123) slidably connected to the left base plate (111) are provided on the left side of the transfer mechanism (12) and located between the front sliding seat (121) and the rear sliding seat (122); and a double-distance cross telescopic mechanism for separating or retracting the transfer seats (123) at the same spacing is provided between the transfer seats (123) located on the left side of the transfer mechanism (12). (124), a plurality of groups of transfer seats (123) slidably connected to the right base plate (112) are provided on the right side of the transfer mechanism (12) and between the front sliding seat (121) and the rear sliding seat (122), a double-distance cross telescopic mechanism (124) for separating or retracting the transfer seats (123) at the same spacing is provided between the transfer seats (123) located on the right side of the transfer mechanism (12), and the transfer seats (123) located on the left side of the transfer mechanism (12) and the transfer seats (123) located on the right side of the transfer mechanism (12) are staggered.

3. The variable distance transfer device according to claim 1 or 2, characterized in that: The double-distance cross telescopic mechanism (124) comprises: cross telescopic units (1241) corresponding to the transfer seat (123) one by one and connected in sequence from head to tail, each of the cross telescopic units (1241) comprises: a first linkage arm (12411) and a second linkage arm (12412), the first linkage arm (12411) is arranged crosswise relative to the second linkage arm (12412), and the center of the first linkage arm (12411) and the center of the second linkage arm (12412) are simultaneously hinged on the corresponding transfer seat (123), and the end of the first linkage arm (12411) and the end of the second linkage arm (12412) between adjacent cross telescopic units (1241) are hinged to each other; the head end of the double-distance cross telescopic mechanism (124) is connected to two front connecting rods (1242), and the two front connecting rods (1242) are connected to the front end of the double-distance cross telescopic mechanism (124). ) is hinged to the front sliding seat (121), the other end of one of the front connecting rods (1242) is hinged to the first linkage arm (12411) of the cross telescopic unit (1241) located at the head end, and the other end of the other front connecting rod (1242) is hinged to the second linkage arm (12412) of the cross telescopic unit (1241) located at the head end; the tail end of the double-distance cross telescopic mechanism (124) is connected to two rear connecting rods (1243), one end of the two rear connecting rods (1243) is hinged to the rear sliding seat (122), the other end of one of the rear connecting rods (1243) is hinged to the first linkage arm (12411) of the cross telescopic unit (1241) located at the rear end, and the other end of the other rear connecting rod (1243) is hinged to the second linkage arm (12412) of the cross telescopic unit (1241) located at the rear end.

4. The variable distance transfer device according to claim 3, characterized in that: The length of the first linkage arm (12411) is equal to the length of the second linkage arm (12412), and the length of the first linkage arm (12411) is equal to twice the length of the front link (1242).

5. The variable distance transfer device according to claim 1, characterized in that: The front driving mechanism (125) comprises: a front belt (1251) fixedly connected to the base (11); the front sliding seat (121) is provided with a front pulley (1252) used in conjunction with the front belt (1251) and a front motor (1253) driving the front pulley (1252) to rotate.

6. The variable distance transfer device according to claim 1, characterized in that: The rear driving mechanism (126) comprises: a rear belt (1261) fixedly connected to the base (11); the rear sliding seat (122) is provided with a rear pulley (1262) used in conjunction with the rear belt (1261) and a rear motor (1263) driving the rear pulley (1262) to rotate.

7. A pipette, characterized in that include: A variable-distance transfer device (1) as described in any one of claims 1, 3, 4, 5, and 6, wherein each transfer seat (123) of the variable-distance transfer device (1) is provided with a group of pipetting components (2), and each of the pipetting components (2) comprises: a suction part (21) and a lifting mechanism (22), the suction part (21) is arranged at the execution end of the lifting mechanism (22), and the lifting mechanism (22) is arranged on the transfer seat (123), so that the suction part (21) can be lifted and lowered relative to the transfer seat (123).

8. The pipette according to claim 7, characterized in that A group of liquid transfer components (2) is provided on the front sliding seat (121) and / or the rear sliding seat (122).

9. A pipette, characterized in that include: According to the variable-distance transfer device (1) of claim 2, each transfer seat (123) on the left side of the transfer mechanism (12) is respectively provided with a group of pipetting components (2), and each transfer seat (123) on the right side of the transfer mechanism (12) is respectively provided with a group of pipetting components (2), each of the pipetting components (2) comprises: a suction part (21) and a lifting mechanism (22), the suction part (21) is arranged at the execution end of the lifting mechanism (22), and the lifting mechanism (22) is arranged on the transfer seat (123), so that the suction part (21) can be lifted and lowered relative to the transfer seat (123); the suction part (21) of the pipetting component (2) on the transfer seat (123) on the left side of the transfer mechanism (12) and the suction part (21) of the pipetting component (2) on the transfer seat (123) on the right side of the transfer mechanism (12) are staggered with each other and are located on the same straight line.

10. The pipette according to claim 9, characterized in that A group of liquid transfer components (2) is provided on the front sliding seat (121) and / or the rear sliding seat (122).

Images