CN214374854U - Liquid-transfering machine head and liquid-transfering work station with the same - Google Patents

Abstract

The utility model discloses a move liquid aircraft nose and have this move liquid workstation of moving liquid aircraft nose, move liquid aircraft nose and include: the device comprises a liquid transferring mechanism and supporting mechanisms arranged on two sides of the liquid transferring mechanism, and is characterized in that a clamping groove is formed in the side wall of the liquid transferring mechanism, a sliding groove is formed in each supporting mechanism, and each sliding groove is provided with a locking end corresponding to the position of the corresponding clamping groove; further comprising: the sliding fixing piece can slide along the sliding groove, and the end part of the sliding fixing piece is positioned on one side, facing the clamping groove, of the sliding groove; when the sliding fixing piece slides to the locking end, the end part of the sliding fixing piece is clamped and embedded in the clamping groove, so that the liquid transferring mechanism is fixed on the supporting mechanism, and when the sliding fixing piece slides away from the locking end, the end part of the sliding fixing piece is separated from the clamping groove, so that the liquid transferring mechanism is disconnected from the supporting mechanism. Above-mentioned liquid-transfering machine head, realization installation and change that can be quick.

Description

Liquid-transfering machine head and liquid-transfering work station with the same

Technical Field

The utility model relates to a move liquid equipment technical field, in particular to move liquid aircraft nose and have this move liquid workstation of moving liquid aircraft nose.

Background

As is well known, the pipetting workstation can be used for biological, medical and scientific research experiments, is suitable for a standard workbench and a biological safety cabinet, is suitable for a general pipette tip of a conventional handheld pipettor, and can automatically complete the functions of automatic pipette tip installation and unloading, pipetting, mixing, sample blowing, reverse pipetting and the like.

Generally speaking, the pipetting workstation can comprise a pipetting mechanism with two ranges of 0.5-20 μ l and 5-200 μ l, when the pipetting mechanism with different ranges needs to be replaced, the locking of the pipetting mechanism needs to be released, and then the removal and replacement operation is carried out; in prior art, move liquid locking of mechanism and often use screw thread locking, need use instruments such as screwdriver when relieving the locking, so, can lead to the change time long, can't satisfy customer laboratory quick replacement's demand, be difficult for the experimenter operation.

In view of the above, how to improve the replacement efficiency of the pipetting mechanism is a technical problem to be considered by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a move liquid aircraft nose and have this move liquid workstation of moving liquid aircraft nose, realization that can be quick moves liquid installation and change of mechanism.

In order to achieve the above object, the utility model provides a liquid-transfering machine head, include: a liquid-transfering mechanism and a supporting mechanism arranged at both sides of the liquid-transfering mechanism, which is characterized in that,

a clamping groove is formed in the side wall of the liquid transferring mechanism, a sliding groove is formed in the supporting mechanism, and the sliding groove is provided with a locking end corresponding to the position of the clamping groove;

further comprising: the sliding fixing piece can slide along the sliding groove, and the end part of the sliding fixing piece is positioned on one side, facing the clamping groove, of the sliding groove; when the sliding fixing piece slides to the locking end, the end part of the sliding fixing piece is clamped and embedded in the clamping groove, so that the liquid transferring mechanism is fixed on the supporting mechanism, and when the sliding fixing piece slides away from the locking end, the end part of the sliding fixing piece is separated from the clamping groove, so that the liquid transferring mechanism is disconnected from the supporting mechanism.

Optionally, move liquid mechanism's lateral wall and be equipped with the slider, be equipped with on the supporting mechanism and be used for supplying the gliding guide slot of slider, through the slider with the cooperation of guide slot is used for right move liquid mechanism carries out vertical spacing.

Optionally, the slot is disposed on the sliding block, and the chute is disposed on the guide slot and penetrates through the guide slot.

Optionally, the depth direction of the locking groove is a vertical direction, the sliding groove comprises a locking groove extending along the vertical direction, and the locking end is located at the tail end of the locking groove.

Optionally, the chute further comprises: and the sliding-off groove is positioned above the guide groove and extends towards the arrangement direction of the guide groove.

Optionally, the locking groove and the slide-off groove are in transition through a circular arc; and/or a preset angle is formed between the sliding-off groove and the guide groove.

Optionally, the sliding fixing part includes a limiting portion and a sliding portion connected to each other, the sliding portion can slide in the sliding groove, the limiting portion can be embedded in the clamping groove, and the size of the limiting portion is larger than that of the sliding groove.

Optionally, one end of the sliding fixing piece, which is far away from the limiting portion, is connected with a handheld piece, and the size of the handheld piece is larger than that of the sliding groove.

Optionally, the lifting device further comprises a driving mechanism, and a driving end of the driving mechanism is connected with the supporting mechanism to drive the supporting mechanism to lift along the vertical direction.

The utility model also provides a move liquid workstation, including foretell move liquid aircraft nose.

Compared with the prior art, the embodiment of the utility model provides a move liquid aircraft nose, utilize the sliding fixing piece to move to the locking end of spout, can realize the fixed of sliding fixing piece and draw-in groove, and then accomplish the fixed position operation of moving liquid mechanism and backup pad, when needing to change and move liquid the mechanism, can control the sliding fixing piece along the spout break away from the locking end, also break away from the tip of sliding fixing piece from the draw-in groove, unblock move liquid the position relation between mechanism and the backup pad, and then change different move liquid mechanisms; it can be seen that the fixing and the unlocking of the position relation between the liquid transferring mechanism and the supporting plate can be ensured by adjusting the position of the sliding fixing piece relative to the sliding chute, the mounting and the replacing efficiency of the liquid transferring mechanism are obviously improved, other tools are not required to be utilized, and the mounting and the replacing of the liquid transferring mechanism can be quickly realized.

The embodiment of the utility model provides a still provide a move liquid workstation with move liquid aircraft nose, possess above-mentioned beneficial effect, will not be repeated here.

Drawings

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

Fig. 1 is a schematic view of a pipetting head provided in an embodiment of the present invention;

fig. 2 is a side view of a pipetting head provided by an embodiment of the present invention;

fig. 3 is an exploded view of a pipetting head provided by an embodiment of the present invention;

fig. 4 is a schematic view of a slide fastener of a pipetting head according to an embodiment of the present invention;

fig. 5 is a partially enlarged view of a liquid-transfering mechanism of a liquid-transfering machine head according to an embodiment of the present invention;

fig. 6 is a partially enlarged view of a support plate of a pipetting head according to an embodiment of the present invention;

wherein:

1-liquid-transfer mechanism, 101-upper plate group, 102-lower plate group, 103-clamping groove, 104-sliding block,

2-supporting mechanism, 21-left lower supporting plate, 22-right lower supporting plate, 23-left upper supporting plate, 24-right upper supporting plate,

200-guide groove, 201-sliding groove, 2011-locking end, 202-locking groove, 203-slip-off groove,

3-slide fastener, 31-stopper, 32-slide, 33-fastener,

4-a hand-held piece,

5-driving mechanism, 51-flange, 52-coupling,

6-lead screw,

7-upper plate body, 71-photoelectric sensor, 72-support plate, 73-fixed seat,

8-lower plate body, 81-induction sheet,

9-protective shell.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

The embodiment of the utility model provides a liquid-transfering machine head, refer to specification attached figure 1 to figure 6, including liquid-transfering mechanism 1, two supporting mechanism 2 and sliding fixing spare 3, liquid-transfering mechanism 1 can include upper plate group 101 and lower plate group 102, and upper plate group 101 and lower plate group 102 are used for installing equipment such as pipettes.

The two support means 2 are preferably arranged vertically so as to be liftable, i.e. the distance between the two support means 2 can be reduced or increased, and the two support means 2 are located on both sides of the pipetting means 1, the upper support means 2 can be fixed to the upper plate group 101, and the upper plate group 101 can be detached from the upper support means 2, the lower support means 2 can be fixed to the lower plate group 102, and the lower plate group 102 can be detached from the lower support means 2.

During use, the upper support mechanism 2 and the upper plate set 101 are fixed, the lower support mechanism 2 and the lower plate set 102 are fixed, and when the distance between the two support mechanisms 2 is reduced or increased, the distance between the upper plate set 101 and the lower plate set 102 is reduced or increased, so that liquid suction or discharge operation of the pipette is realized.

Of course, the pipetting mechanism 1 can also adopt other arrangement modes according to actual needs, and the description is omitted here.

Referring to the specification and the attached fig. 5, the side walls of the upper plate group 101 and the lower plate group 102 are both provided with the locking groove 103, that is, the side wall of the pipetting mechanism 1 is provided with the locking groove 103, the two support mechanisms 2 are both provided with the sliding groove 201, the sliding groove 201 is provided with the locking end 2011, and the position of the locking end 2011 corresponds to the position of the locking groove 103; the slide groove 201 should be provided as a through groove that penetrates the thickness direction of the support mechanism 2.

The slide fastener 3 can slide along the sliding groove 201, and an end of the slide fastener 3 is located outside the sliding groove 201, specifically, on a side of the sliding groove 201 facing the card slot 103; when the positions of the pipetting mechanism 1 and the support mechanism 2 need to be fixed, the pipetting mechanism 1 is firstly moved to the designated position of the support mechanism 2, then the sliding fixing piece 3 is controlled to slide to the locking end 2011 of the chute 201, and the end part of the sliding fixing piece 3 is clamped and embedded with the clamping groove 103 at the moment, so that the pipetting mechanism 1 and the support mechanism 2 are connected.

When the pipetting mechanism 1 needs to be replaced, that is, the pipetting mechanism 1 and the support mechanism 2 are separated, the sliding fixing part 3 is controlled to slide away from the locking end 2011 of the chute 201, and the end part of the sliding fixing part 3 is moved out of the clamping groove 103, so that the connection between the pipetting mechanism 1 and the support mechanism 2 can be disconnected, and the operations such as replacement of the pipetting mechanism 1 are completed.

Herein, the supporting mechanism 2 located above may specifically be set up as upper left backup pad 23 and upper right backup pad 24, upper left backup pad 23 and upper right backup pad 24 are located the both sides of upper plate group 101 respectively, upper left backup pad 23 and upper right backup pad 24 may all set up spout 201, the both sides of upper plate group 101 may also set up draw-in groove 103 respectively, two sliding fixing members 3 realize the fixed of upper plate group 101 and upper left backup pad 23 and the fixed of upper plate group 101 and upper right backup pad 24 about utilizing.

Similarly, the lower supporting mechanism 2 may be specifically configured as a left lower supporting plate 21 and a right lower supporting plate 22, the left lower supporting plate 21 and the right lower supporting plate 22 are respectively located at two sides of the lower plate set 102, the left lower supporting plate 21 and the right lower supporting plate 22 may both be provided with a sliding slot 201, the two sides of the lower plate set 102 may also be provided with a clamping slot 103, and the fixing of the lower plate set 102 and the left lower supporting plate 21 and the fixing of the lower plate set 102 and the right lower supporting plate 22 are achieved by using the left and right sliding fixtures 3.

With continued reference to fig. 5 of the specification, the side walls of the upper plate group 101 and the lower plate group 102 are provided with the slide blocks 104, that is, the side walls of the pipetting mechanism 1 are provided with the slide blocks 104, and the two support mechanisms 2 are provided with the guide grooves 200, and the slide blocks 104 can slide along the guide grooves 200.

Only the connection manner of the upper plate group 101, the left upper support plate 23 and the right upper support plate 24 is described in detail, and the connection manner of the lower plate group 102, the left lower support plate 21 and the right lower support plate 22 can be referred to as well.

The two sides of the upper plate group 101 are provided with the sliding blocks 104, the sliding blocks 104 can be regarded as protrusions on the side walls of the upper plate group 101, the sliding blocks 104 are arranged along the front-back direction of the upper plate group 101, the inner side walls of the left upper supporting plate 23 and the right upper supporting plate 24 are respectively provided with the guide groove 200, the extending modes of the guide grooves 200 and the upper plate group 101 are consistent, and the width of the guide grooves 200 is larger than the thickness of the sliding blocks 104, so that the sliding blocks 104 extend into the guide grooves 200. Through the cooperation of slider 104 and guide slot 200 for carry out vertical spacing to pipetting mechanism 1.

When the upper plate group 101 needs to be fixed on the upper left supporting plate 23 and the upper right supporting plate 24, the sliding blocks 104 on the two sides of the upper plate group 101 are respectively aligned with the guide grooves 200 of the upper left supporting plate 23 and the upper right supporting plate 24, and the upper plate group 101 is controlled to move backwards, the upper plate group 101 is gradually accommodated between the upper left supporting plate 23 and the upper right supporting plate 24, after the upper plate group 101 moves in place, the sliding fixing member 3 is controlled to slide in the sliding groove 201, when the sliding fixing member 3 slides to the locking end 2011 of the sliding groove 201, the end part of the sliding fixing member 3 is clamped with the clamping groove 103, and connection of the upper plate group 101, the upper left supporting plate 23 and the upper right supporting plate 24 is realized.

To the specific arrangement mode of the clamping groove 103, the clamping groove 103 is arranged on the sliding block 104, the sliding groove 201 is arranged on the guide groove 200, and the sliding groove 201 penetrates through the guide groove 200.

With reference to fig. 5 and fig. 6 of the specification, after the slider 104 slides in place along the guide groove 200, the positions of the clamping groove 103 and the locking end 2011 correspond to each other, at this time, the sliding fixing member 3 slides in the sliding groove 201, and the sliding fixing member 3 slides to the locking end 2011, so that the sliding fixing member 3 is clamped in the clamping groove 103, and thus, the positions of the pipetting mechanism 1 and the support mechanism 2 can be ensured to be fixed.

Referring to the specification, as shown in fig. 5 and fig. 6, the depth direction of the card slot 103 is a vertical direction, the sliding slot 201 includes a locking slot 202, and the locking end 2011 is located at the end of the locking slot 202.

That is, the locking groove 202 extends in the vertical direction, and the depth direction of the locking groove 202 is the vertical direction; after the upper plate set 101 moves to the right relative to the left upper support plate 23 and the right upper support plate 24, the position of the locking end 2011 of the sliding groove 201 coincides with the position of the locking groove 103 at this time, that is, the end of the locking groove 202 coincides with the position of the locking groove 103, so that the sliding fixing member 3 can be controlled to slide into the locking end 2011, and the position fixation of the upper plate set 101 relative to the left upper support plate 23 and the right upper support plate 24 is realized.

Further, the sliding groove 201 may further include a sliding-off groove 203, the sliding-off groove 203 and the locking groove 202 are communicated with each other, the sliding-off groove 203 is located above the guide groove 200, the sliding-off groove 203 extends toward the arrangement direction of the guide groove 200, and both the locking groove 202 and the sliding-off groove 203 are at a certain angle.

As described above, the locking groove 202 extends in the vertical direction, that is, the depth direction of the locking groove 202 is the vertical direction; the locking tip 2011 is located at the end of the locking slot 202, while the slide-off slot 203 is located above the guide slot 200, and the slide-off slot 203 extends in the direction of the guide slot 200.

After the upper plate set 101 moves in place relative to the left upper support plate 23 and the right upper support plate 24, the locking end 2011 of the sliding groove 201 coincides with the position of the clamping groove 103, that is, the tail end of the locking groove 202 coincides with the position of the clamping groove 103, and the rest parts of the locking groove 202 do not interfere with the guide groove 200 with the sliding groove 203, so that the sliding fixing piece 3 can be controlled to smoothly slide into the locking end 2011 from the sliding groove 203, and the position fixation of the upper plate set 101 relative to the left upper support plate 23 and the right upper support plate 24 is realized.

It can be seen that, during the sliding of the slide fixing member 3 into the locking end 2011 from sliding out of the groove 203, the slide fixing member 3 moves only in the plane of the left and right upper support plates 23 and 24 and does not displace in the left-right direction.

In order to avoid excessive wear of the slide fastener 3, it is preferable that the distance between the lock groove 202 and the slide-off groove 203 is excessive by an arc, that is, when the slide fastener 3 moves from the slide-off groove 203 to the lock groove 202, the slide is smoothly performed excessively by an arc, the influence of the sharp angle between the lock groove 202 and the slide-off groove 203 on the movement of the slide fastener 3 is avoided, and the degree of wear of the slide fastener 3 can be effectively reduced.

The slide-off groove 203 and the guide groove 200 have a predetermined angle therebetween, and as mentioned above, the slide-off groove 203 is inclined upward compared to the guide groove 200 based on the fact that the movement of the slide holder 3 does not interfere with the guide groove 200, rather than the slide-off groove 203 and the guide groove 200 being arranged in parallel, so that the angle between the slide-off groove 203 and the lock groove 202 is made large, facilitating the slide of the slide holder 3 from the slide-off groove 203 into the lock groove 202 under the action of gravity, facilitating the connection of the pipetting mechanism 1 and the support mechanism 2.

Referring to fig. 4 of the specification, the slide fastener 3 includes a stopper portion 31 and a sliding portion 32 connected to each other, the stopper portion 31 and the sliding portion 32 may be coaxially disposed, and the stopper portion 31 has a size larger than that of the sliding groove 201.

When the positions of the pipetting mechanism 1 and the support mechanism 2 need to be fixed, after the pipetting mechanism 1 moves to the designated position of the support mechanism 2, the sliding fixing piece 3 is controlled to slide, at the moment, the sliding part 32 slides in the chute 201, and when the sliding fixing piece 3 slides to the locking end 2011 of the chute 201, the limiting part 31 is clamped in the clamping groove 103, so that the connection of the pipetting mechanism 1 and the support mechanism 2 is completed. The separation process of the pipetting mechanism 1 and the support mechanism 2 is the reverse of the above process and is not expanded herein.

It can be seen that, since the size of the stopper 31 is larger than that of the chute 201, the stopper 31 does not fall off from the chute 201, and the reliability of connection and separation of the pipetting mechanism 1 and the support mechanism 2 is effectively ensured.

In order to control the slide fastener 3 conveniently, the slide fastener 3 may further be connected with a hand piece 4, the hand piece 4 is disposed at one end of the slide fastener 3 away from the limiting portion 31, that is, the limiting portion 31 and the hand piece 4 are respectively disposed at two sides of the supporting mechanism 2, and the size of the hand piece 4 is larger than that of the sliding chute 201.

The sliding fixing member 3 may be embodied as a stepped screw, two ends of the sliding portion 32 are respectively a limiting portion 31 and a fastening portion 33, and the size of both the limiting portion 31 and the fastening portion 33 is larger than that of the sliding portion 32; the stopper portion 31, the sliding portion 32, and the fastening portion 33 may be all provided in a cylindrical shape, and the size of the stopper portion 31 may be larger than that of the fastening portion 33.

The fastening portion 33 may be a threaded end, the hand piece 4 may be an anti-slip nut, and the anti-slip nut and the threaded end may be fixed by a threaded connection, so that the movement of the sliding fastener 3 may be controlled by holding the anti-slip nut.

Aiming at the movement implementation mode of the upper plate group 101 and the lower plate group 102, the pipetting head further comprises a driving mechanism 5, the driving mechanism 5 can be a driving piece such as a stepping motor, the driving end of the driving mechanism 5 is connected with the left lower supporting plate 21 and the right lower supporting plate 22, and the driving mechanism 5 drives the lower supporting plate 21 and the right lower supporting plate 22 to lift along the vertical direction.

The left upper support plate 23 and the right upper support plate 24 can be kept fixed in position, and the driving mechanism 5 is used for driving the left lower support plate 21 and the right lower support plate 22 to move along the vertical direction, so that the distance between the upper plate group 101 and the lower plate group 102 can be changed.

Referring to the attached fig. 3 of the specification, the driving mechanism 5 is vertically arranged, the driving end of the driving mechanism 5 is connected with the lead screw 6 through the coupler 52, and the lead screw 6 is vertically arranged below the driving mechanism 5.

The driving mechanism 5 is fixed on the upper plate body 7 through a flange 51 and a support plate 72, wherein the flange 51 can be horizontally placed, the flange 51 is provided with a through hole for the driving end of the driving mechanism 5 to penetrate through, and the top end face of the flange 51 is connected with the body of the driving mechanism 5.

The two support plates 72 can be vertically arranged, the tops of the two support plates 72 are connected with the bottom end face of the flange 51, and the bottoms of the two support plates 72 are fixed on the upper plate body 7; the lower plate body 8 is arranged below the upper plate body 7 at intervals, the upper plate body 7 and the lower plate body 8 are provided with through holes, the lead screw 6 penetrates through the through holes, the lead screw 6 is fixed on the upper plate body 7 through the fixing seat 73, a lead screw nut is fixed on the periphery of the lead screw 6, and the lead screw nut is fixed on the lower plate body 8.

So, can realize actuating mechanism 5's fuselage and last plate body 7 fixed connection, when actuating mechanism 5's drive end took place to rotate, it was rotatory to drive lead screw 6, and lead screw nut moves along vertical direction, and then drives down plate body 8 and moves along vertical direction.

The left upper support plate 23 and the right upper support plate 24 are both fixed at two ends of the upper plate body 7, and the left lower support plate 21 and the right lower support plate 22 are both fixed at two ends of the lower plate body 8; that is, by the rotation of the drive mechanism 5, to move both the lower support plate 21 and the right lower support plate 22 in the vertical direction.

The upper plate body 7 may further include a photoelectric sensor 71, the lower plate body 8 may further include a sensing piece 81 coupled to the photoelectric sensor 71, and the lifting height of the lower plate body 8 may be detected by mutual sensing between the photoelectric sensor 71 and the sensing piece 81.

Of course, other assemblies may be used to achieve the movement of the upper plate set 101 and the lower plate set 102, such as a piston cylinder assembly such as a cylinder, which is not expanded herein.

Besides, in order to protect the above components such as the screw 6, the upper plate body 7 and the lower plate body 8, a protective shell 9 can be further arranged, refer to fig. 1 to fig. 3 of the specification, the protective shell 9 is a semi-closed frame structure, and comprises side plates located on two sides and a front baffle plate connected with the two side plates, the side plates shield most positions of the supporting mechanism 2, and only the sliding groove 201, the sliding fixing member 3 and the handheld piece 4 are exposed, so that the sliding fixing member 3 can be conveniently controlled to slide along the sliding groove 201, and the connection and the separation of the pipetting mechanism 1 and the supporting mechanism 2 can be realized.

The lower part of the front baffle is provided with a gap, so that the interference between the front baffle and the liquid transferring mechanism 1 is avoided, and the liquid transferring mechanism 1 can be smoothly connected with and separated from the supporting mechanism 2.

The protective shell 9 can be formed by integrally bending a metal plate, and can also be produced in an injection molding mode or other modes, and the protective shell is not unfolded.

The utility model provides a liquid-transfering work station with a liquid-transfering machine head, which comprises the liquid-transfering machine head described in the above embodiment; other parts of the pipetting station can be referred to the prior art and are not described further herein.

It is right above that the utility model provides a move liquid aircraft nose and have this move liquid workstation of moving liquid aircraft nose and introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. A pipetting head comprising: a liquid-transfering mechanism (1) and a supporting mechanism (2) arranged at two sides of the liquid-transfering mechanism (1),

a clamping groove (103) is formed in the side wall of the liquid transfer mechanism (1), a sliding groove (201) is formed in the supporting mechanism (2), and the sliding groove (201) is provided with a locking end (2011) corresponding to the clamping groove (103);

further comprising: the sliding fixing piece (3) can slide along the sliding groove (201), and the end part of the sliding fixing piece (3) is positioned on one side, facing the clamping groove (103), of the sliding groove (201); when the sliding fixing part (3) slides to the locking end (2011), the end part of the sliding fixing part (3) is clamped in the clamping groove (103) so that the liquid transfer mechanism (1) is fixed on the supporting mechanism (2), and when the sliding fixing part (3) slides away from the locking end (2011), the end part of the sliding fixing part (3) is separated from the clamping groove (103) so that the liquid transfer mechanism (1) is disconnected from the supporting mechanism (2).

2. The pipetting head according to claim 1, characterized in that the side wall of the pipetting mechanism (1) is provided with a slide block (104), the support mechanism (2) is provided with a guide groove (200) for the slide block (104) to slide, and the slide block (104) and the guide groove (200) are matched to vertically limit the pipetting mechanism (1).

3. Pipetting head according to claim 2, characterized in that the catch (103) is arranged on the slide (104) and the runner (201) is arranged on the guide channel (200) and runs through the guide channel (200).

4. Pipetting head according to claim 3, characterized in that the depth direction of the catch groove (103) is a vertical direction, the runner (201) comprises a locking groove (202) extending in the vertical direction, and the locking end (2011) is located at the end of the locking groove (202).

5. Pipetting head according to claim 4, characterized in that the chute (201) further comprises: and a slide-off groove (203), wherein the slide-off groove (203) is positioned above the guide groove (200) and extends towards the arrangement direction of the guide groove (200).

6. Pipetting head according to claim 5, characterized in that the locking groove (202) and the slide-off groove (203) are over-rounded by means of a circular arc; and/or a preset angle is formed between the sliding-off groove (203) and the guide groove (200).

7. Pipetting head according to any one of claims 1-6, characterized in that the slide holder (3) comprises a stop portion (31) and a sliding portion (32) connected to each other, the sliding portion (32) being slidable in the chute (201), the stop portion (31) being snapably insertable in the snap groove (103), and the stop portion (31) having a size larger than the chute (201).

8. Pipetting head according to claim 7, characterized in that a hand piece (4) is connected to the end of the slide holder (3) remote from the stop (31), the hand piece (4) having a size larger than the chute (201).

9. Pipetting head according to any one of claims 1-6, characterized by a drive mechanism (5), the drive end of the drive mechanism (5) being connected to the support mechanism (2) for lifting the support mechanism (2) in the vertical direction.

10. A pipetting station comprising a pipetting head according to any one of claims 1 to 9.

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