CN105372441A - Z-axis structure of liquid moving module - Google Patents
Z-axis structure of liquid moving module Download PDFInfo
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- CN105372441A CN105372441A CN201510705206.9A CN201510705206A CN105372441A CN 105372441 A CN105372441 A CN 105372441A CN 201510705206 A CN201510705206 A CN 201510705206A CN 105372441 A CN105372441 A CN 105372441A
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Abstract
The invention relates to a Z-axis structure of a liquid moving module, and relates to the technical field of multi-channel sample adding and liquid moving equipment. The Z-axis structure comprises a Z-axis fixing plate and a liquid moving unit arranged on the Z-axis fixing plate. The liquid moving unit is composed of a driving device and a liquid moving device. The liquid moving device comprises a sliding block fixing plate and a liquid moving machine arranged on the sliding block fixing plate. A lead screw avoiding groove is formed in the sliding block fixing plate. The driving device comprises a lead screw, a lead screw nut and a motor fixed to the Z-axis fixing plate. The lead screw nut is fixed to the sliding block fixing plate. The lead screw nut is arranged on the lead screw. One end of the lead screw is connected with the motor, and the other end of the lead screw stretches into the lead screw avoiding groove in the sliding block fixing plate. The Z-axis structure has the advantages that the driving mode is simplified, the whole size of the driving device is reduced, the lead screw is prevented from occupying the space of the sliding block fixing plate and the liquid moving machine, the whole size of the Z-axis structure is reduced, and the installation space is saved.
Description
Technical field
The present invention relates to multi-channel loading, liquid shifting equipment, more particularly, relate to the Z axis structure of moving liquid module.
Background technology
Multi-channel loading device is the equipment of the operation such as the automatic management of Document for the dilution of full-automatic sample, reagent, distribution, mixing and related data, and multiple Loading channel refers to have multiple sample injector.Multi-channel loading device may be used for all automated fluid application of samples work in the processes such as medical test, Food Inspection, biological experiment.Such as, medicament high flux screening, biology laboratory, gene sequencing pre-treatment, front PCR, rear PCR process, Solid-Phase Extraction, liquid-liquid extraction, DNA/RNA is separated, automatic protein precipitation operation etc.Specifically mainly comprise: nucleic acid purification, PCR is arranged and purifying, gene, protein sequencing process, the standardization of sample, biochip sample preparation, clone's rapid screening, crystallization of protein, gel digestion process, protein precipitation, protein purification, ADMET analyzes, soluble analysis, mixture process, sample rapid screening, microwell plate copies, solid phase sample extracts, Liquid-liquid sample extraction, cell chulture, ELISA sample preparation, blood type analysis process, blood sample collects process etc.
A kind of Multi-channel sample syringe pump is disclosed in prior art, this Multi-channel sample syringe pump comprises sampling pump riser, be fixed on the pump mount pad on sampling pump riser, multiple syringe pump main body be fixed on pump mount pad, the back side of sampling pump riser is provided with a stepper motor, stepper motor drives leading screw bolt rotary, leading screw screw rod is provided with a drive block, drive block moves up and down under the drive of leading screw screw rod, and the sliding panel motion be arranged on sampling pump riser front is driven by the effect of drive block, the pull bar of syringe pump main body is all fixed on sliding panel, and realize pull by the drive of sliding panel.In order to avoid the skew of shake or position occurs leading screw screw rod in rotation process, one end of leading screw screw rod is connected on stepper motor, the other end need be fixed on an installing plate, and this installing plate is fixedly located on sampling pump riser, the steady transmission of drive block, sliding panel just can be realized by this kind of structure.Leading screw screw rod this kind of mounting means, occupy the space that Multi-channel sample pump is more, the structure of its drive unit is comparatively loaded down with trivial details, simultaneously due to the existence of drive block, installing plate and sliding panel, increase the volume of whole sampling syringe pump, increase the installing space of sampling syringe pump.
Therefore a kind of Z axis structure of moving liquid module simplifying driving device structure, save installing space is needed.
Summary of the invention
The object of the present invention is to provide a kind of Z axis structure of moving liquid module, be intended to solve the problem that the type of drive installing space that is loaded down with trivial details, syringe pump of syringe pump in prior art is larger.
In order to realize goal of the invention, a kind of Z axis structure of moving liquid module, its improvements are: described Z axis structure comprises Z axis fixed head and is arranged on, and Z axis fixed head moves liquid unit, described in move liquid unit and be made up of drive unit and liquid-transfering device;
Described liquid-transfering device comprises slide block fixed head and is arranged on the pipettor on slide block fixed head, and described slide block fixed head is provided with a screw mandrel avoiding hollow groove;
The motor that described drive unit comprises screw mandrel, feed screw nut and is fixed on Z axis fixed head, described feed screw nut is fixed on slide block fixed head, described feed screw nut is arranged on screw mandrel, and one end of screw mandrel is connected with motor, and the other end of screw mandrel stretches in the screw mandrel avoiding hollow groove of slide block fixed head.
Wherein, described Z axis fixed head is arranged with in parallel multiplely moves liquid unit.
Further, described Z axis fixed head is arranged with six in parallel and moves liquid unit.
Further, described liquid-transfering device also comprises line slideway, and what described multiple line slideway was parallel to each other is fixed on Z axis fixed head, and the slide block fixed head of described each liquid-transfering device slides and is arranged on the line slideway of this liquid-transfering device.
Further, described Z axis fixed head is provided with guide rail locating device, described in the line slideway moved in liquid unit be all fixed on Z axis fixed head by guide rail locating device.
Further, described slide block fixed head is provided with pipettor locating device, described in move liquid unit pipettor be fixed on described slide block fixed head by pipettor locating device.
Wherein, described guide rail locating device and pipettor locating device are register pin or projection, and corresponding described line slideway and described pipettor are provided with dowel hole or groove.
Wherein, described screw mandrel avoiding hollow groove is the through hole through slide block fixed head.
Wherein, described screw mandrel avoiding hollow groove is be arranged at the blind hole on slide block fixed head.
Wherein, described drive unit also comprises motor fixing plate and screw rod fixing plate, and described motor fixing plate and screw rod fixing plate are all fixed on Z axis fixed head; The motor moving liquid unit is arranged on motor fixing plate, and the screw mandrel moving liquid unit is arranged on screw rod fixing plate.
Further, described Z axis fixed head is provided with multiple dowel hole, and described screw rod fixing plate and motor fixing plate are provided with corresponding multiple register pins.
Further, described screw rod fixing plate is provided with the multiple dead eyes be arranged in a linear, the spacing of adjacent shaft bearing bore is all equal, and is all provided with bearing in described each dead eye, and described screw mandrel is through bearing.
Further, the bearing arranged in described dead eye is double-row angular contact bal bearing.
Wherein, described Z axis structure also comprises lower caging device and the origin point position detecting unit for detecting described pipettor origin position.
Further, described lower caging device is microswitch.
Further, described origin point position detecting unit is light groove switch.
As from the foregoing, the present invention is by being fixed on the output shaft of motor by one end of screw mandrel, and the other end directly stretches in the screw mandrel avoiding hollow groove of slide block fixed head, eliminates the structure be fixed the screw mandrel other end, simplify the structure of drive unit, reduce the volume of drive unit entirety; And because the other end of screw mandrel is through feed screw nut, directly stretches in the screw mandrel avoiding hollow groove of slide block fixed head, thus avoid screw mandrel to occupy the space of slide block fixed head and pipettor, reduce the volume of Z axis structure entirety, save installing space.
Accompanying drawing explanation
Fig. 1 is the schematic diagram moving the Z axis structure of liquid module in the present invention's example.
Fig. 2 a, Fig. 2 b be the Z axis structure of moving liquid module in another example of the present invention schematic diagram.
Fig. 2 c is the structural representation of Z axis fixed head and line slideway in another example of the present invention.
Fig. 3 a, Fig. 3 b are two kinds of structural representations of slide block fixed head of the present invention and pipettor.
Fig. 4 a, Fig. 4 b, Fig. 5 a, Fig. 5 b are the structural representations of slide block fixed head of the present invention and screw mandrel.
Fig. 6 a, Fig. 6 b are the schematic diagram of the Z axis structure of moving liquid module in another example of the present invention.
Fig. 6 c is the structural representation of Z axis fixed head and screw rod fixing plate in another example of the present invention.
Fig. 7 is the schematic diagram of the Z axis structure of moving liquid module in another example of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing and example, the present invention is further elaborated.
The present invention proposes the first example, and as shown in Figure 1, the Z axis structure of moving liquid module comprises Z axis fixed head 10 and is arranged on, and Z axis fixed head 10 moves liquid unit, described in move liquid unit and be made up of drive unit 30 and liquid-transfering device 20; Wherein, described liquid-transfering device 20 comprises slide block fixed head 201 and is arranged on the pipettor 202 on slide block fixed head 201, and pipettor 202 has a liquid-transfering needle, by pipettor 202 realize reagent sampling, move liquid; Described slide block fixed head 201 is provided with a screw mandrel avoiding hollow groove 203.Further, the motor 303 that described drive unit comprises screw mandrel 301, feed screw nut 302 and is fixed on Z axis fixed head 10, described feed screw nut 302 is fixed on slide block fixed head 201, described feed screw nut 302 is arranged on screw mandrel 301, one end of screw mandrel 301 is connected with motor 303, and the other end of screw mandrel 301 stretches in the screw mandrel avoiding hollow groove 203 of slide block fixed head 201.
In this example, described motor 303 drives screw mandrel 301 to rotate, screw mandrel 301 drives feed screw nut 302 to move up and down on screw mandrel 301, because feed screw nut 302 is fixed on slide block fixed head 201, therefore movable slider fixed head 201 is with also together to move up and down, pipettor 202 is fixed on slide block fixed head, in the process moved up and down, complete sampling, moves the operations such as liquid along with slide block fixed head 201.The conventional fixed form of screw mandrel in prior art, one end of general screw mandrel is connected on the output shaft of motor, and the other end of screw mandrel is arranged on bearing, and is fixed by bearing holder (housing, cover).And in this example, one end of screw mandrel 301 is fixed on the output shaft of motor 303, the other end directly stretches in the screw mandrel avoiding hollow groove 203 of slide block fixed head 201, the fixed form of middle screw mandrel compared to existing technology, present invention eliminates the structure that the screw mandrel other end is fixed, simplify the structure of drive unit, reduce the volume of drive unit entirety, save installing space.Simultaneously, because the other end of screw mandrel 301 is through feed screw nut 302, directly stretches in the screw mandrel avoiding hollow groove 203 of slide block fixed head 201, thus avoid screw mandrel 301 to occupy the space of slide block fixed head 201 and pipettor 202, reduce the volume of Z axis structure entirety, save installing space.
As shown in Fig. 2 a, Fig. 2 b, the present invention proposes another example, described Z axis structure of moving liquid module comprises Z axis fixed head 10 and is arranged on, and Z axis fixed head 10 moves liquid unit 100, in this example, described Z axis fixed head 10 is arranged with in parallel and multiplely moves liquid unit 100.As shown in Figure 2 b, each liquid unit 100 that moves is made up of drive unit 30 and liquid-transfering device 20.The pipettor 202 that described liquid-transfering device 20 comprises slide block fixed head 201 and is arranged on slide block fixed head 201, is realized sampling by this pipettor 202, is moved liquid.In addition, in this example, described liquid-transfering device 20 also comprises line slideway 204, and what line slideway 204 was parallel to each other is fixed on Z axis fixed head 10, and described slide block fixed head 201 is slidably arranged on line slideway 204; Z axis fixed head 10 is also provided with guide rail locating device, described in the line slideway 204 moved in liquid unit 20 be all fixed on Z axis fixed head 10 by guide rail locating device.Described slide block fixed head 201 is provided with a screw mandrel avoiding hollow groove 203.The motor 303 that described drive unit 30 comprises screw mandrel 301, feed screw nut 302 and is fixed on Z axis fixed head 10, described feed screw nut 302 is fixed on slide block fixed head 201, described feed screw nut 302 is arranged on screw mandrel 301, one end of screw mandrel 301 is connected with motor 303, and the other end of screw mandrel 301 stretches in the screw mandrel avoiding hollow groove 203 of slide block fixed head 301.
In this example, with example described in Fig. 1 unlike, Z axis fixed head 10 in this example is arranged with in parallel and multiplely moves liquid unit 100, therefore Z axis fixed head 10 has multiple pipettor 202, because each liquid unit 100 that moves has drive unit 30, therefore can realize, to the driving of single pipettor 202, realizing moving up and down of single pipettor 202, thus realize single passage sampling, move liquid.As shown in Figure 2 b, motion on motor 303 drives slide block fixed head 201, pipettor 202 1 coexists line slideway 204, line slideway 204 pairs of slide block fixed heads 201 play the effect of guiding, and anti-limited slip block fixed head 201 offsets in the process of moving up and down.Line slideway 204 is fixed on Z axis fixed head 10 by guide rail locating device, as shown in Figure 2 c, in this example, described guide rail locating device is register pin 2040, corresponding described line slideway 204 is provided with dowel hole 2041, by coordinating of the register pin 2040 on Z axis fixed head 10 and dowel hole 2041, line slideway 204 is fixed on Z axis fixed head 10, ensure that the assembly precision between Z axis fixed head 10 and line slideway 204, add the benchmark of installation, also facilitate the assembling of line slideway 204 simultaneously, it should be noted that, described guide rail locating device can also be arranged on the projection on Z axis fixed head 10, corresponding described line slideway 204 is provided with groove.One end of screw mandrel 301 is fixed on the output shaft of motor 303, and the other end directly stretches in the screw mandrel avoiding hollow groove 203 of slide block fixed head 201, simplifies type of drive, reduces the volume of drive unit 30 entirety, saves the installing space of drive unit 30.Simultaneously, because the other end of screw mandrel 301 is through feed screw nut 302, directly stretches in the screw mandrel avoiding hollow groove 203 of slide block fixed head 201, thus avoid screw mandrel 301 to occupy the space of slide block fixed head 201 and pipettor 202, reduce the volume of Z axis structure entirety, save the installing space of Z axis structure.
On the basis of above-mentioned any scheme, as shown in Figure 3 a, described slide block fixed head 201 is provided with pipettor locating device, described pipettor 202 is fixed on described slide block fixed head 201 by pipettor locating device, in this example, described pipettor locating device is register pin 2020, and corresponding described pipettor 2020 is provided with dowel hole 2021.By coordinating of the register pin 2020 on slide block fixed head 201 and the dowel hole 2021 on pipettor 202, pipettor 202 is fixed on slide block fixed head 201, ensure that the assembly precision between pipettor 202 and slide block fixed head 201, add the reference for installation of pipettor 202, facilitate the assembling of pipettor 202.In the scheme shown in Fig. 2 a, Fig. 2 b and Fig. 2 c, the depth of parallelism between the spacing accuracy of many line slideways 204 and adjacent line slideway 204 is ensure that by guide rail locating device, slide block fixed head 201 is arranged on line slideway 204, further in this example, register pin 2020 on slide block fixed head 201 and the dowel hole on pipettor 202 2021 ensure that the spacing accuracy of multiple pipettor 202, achieve the parallel equidistantly arrangement of multiple single pass pipettor, and ensure that spacing accuracy.
Technical in above-mentioned any scheme, as shown in Figure 3 b, described slide block fixed head 201 is provided with pipettor locating device, described pipettor 202 is fixed on described slide block fixed head 201 by pipettor locating device, in this example, described pipettor locating device is projection, corresponding described pipettor 202 is provided with the groove suitable with projection, projection on slide block fixed head 201 inserts in the groove of pipettor 202, pipettor 202 is fixed on slide block fixed head 201, ensure that the assembly precision between pipettor 202 and slide block fixed head 201, add the reference for installation of pipettor 202, facilitate the assembling of pipettor 202.In the scheme shown in Fig. 2 a, Fig. 2 b and Fig. 2 c, the depth of parallelism between the spacing accuracy of many line slideways 204 and adjacent line slideway 204 is ensure that by guide rail locating device, and in this example, groove on projection on slide block fixed head 201 and pipettor 202 then ensure that the spacing accuracy of multiple pipettor 202, achieve the parallel equidistantly arrangement of multiple single pass pipettor 202, and ensure that spacing accuracy.
As Fig. 4 a, shown in Fig. 4 b, for the screw mandrel avoiding hollow groove 203 that slide block fixed head 201 is arranged, the invention provides an example, in this example, screw mandrel avoiding hollow groove 203 is the blind hole on slide block fixed head 201, feed screw nut 302 is fixed on the opening part of blind hole, feed screw nut 3052 matches with screw mandrel 301, screw mandrel 301 stretches in screw mandrel avoiding hollow groove 203, as shown in fig. 4 a, for feed screw nut 302 and slide block fixed head 201 move to the view of the bottom dead center position of screw mandrel 301, as shown in Figure 4 b, for feed screw nut 302 and slide block fixed head 201 move to the view of the top dead center position of screw mandrel 301, in the process that feed screw nut 302 and slide block fixed head 201 move up and down, described screw mandrel 301 moves in screw mandrel avoiding hollow groove 203, prevent the space occupying slide block fixed head 201 and pipettor 202 that screw mandrel 301 is extra, reduce the volume of Z axis structure entirety, save the installing space of Z axis structure.And, one end due to screw mandrel 301 is fixed on the output shaft of motor 303, the other end directly stretches in the screw mandrel avoiding hollow groove 203 of slide block fixed head 201, the fixed form of middle screw mandrel compared to existing technology, eliminate the structure that the screw mandrel other end is fixed, simplify type of drive, reduce the volume of drive unit entirety, save installing space.
As shown in Fig. 5 a, Fig. 5 b, for the screw mandrel avoiding hollow groove 203 that slide block fixed head 201 is arranged, the invention provides another example, described screw mandrel avoiding hollow groove 203 is arranged on the inside of slide block fixed head 201, in this example, screw mandrel avoiding hollow groove 203 is through described slide block fixed head 201, and therefore screw mandrel avoiding hollow groove 203 is a through hole on slide block fixed head 201, and be manhole, the internal diameter of screw mandrel avoiding hollow groove 203 is slightly larger than the diameter of screw mandrel 301.Feed screw nut 302 is fixed on an opening part of through hole, feed screw nut 302 matches with screw mandrel 301, screw mandrel 301 stretches in the screw mandrel avoiding hollow groove 203 in through-hole structure, as shown in Figure 5 a, the view of the bottom dead center position of screw mandrel 301 is moved to for slide block fixed head 201, as shown in Figure 5 b, the view of the top dead center position of screw mandrel 301 is moved to for slide block fixed head 201, in the process that feed screw nut 302 and slide block fixed head 201 move up and down, described screw mandrel 301 moves in screw mandrel avoiding hollow groove 203, prevent the space occupying slide block fixed head 201 and pipettor 202 that screw mandrel 301 is extra, reduce the volume of Z axis structure entirety, save the installing space of Z axis structure.In this example, one end of screw mandrel 301 is fixed on the output shaft of motor 303, the other end directly stretches in the screw mandrel avoiding hollow groove 203 of slide block fixed head 201, the fixed form of middle screw mandrel 301 compared to existing technology, present invention eliminates the structure that screw mandrel 301 other end is fixed, simplify type of drive, improve the utilization factor of screw mandrel, reduce the volume of drive unit entirety, save installing space.In addition, due to the through hole of screw mandrel avoiding hollow groove 203 for running through, described screw mandrel 203 even can pass from screw mandrel avoiding hollow groove 203, by the maximization of the utilization factor of screw mandrel 201.
As shown in Figure 6 a, for the described Z axis structure of moving liquid module, the invention allows for an example, in this example, the Z axis structure of moving liquid module comprises Z axis fixed head 10 and is arranged on, and Z axis fixed head moves liquid unit, described in move liquid unit and be made up of drive unit 30 and liquid-transfering device 20; Wherein, the pipettor 202 that described liquid-transfering device 20 comprises slide block fixed head 201 and is arranged on slide block fixed head 201, is realized sampling by this pipettor 202, is moved liquid; Described slide block fixed head 201 is provided with a screw mandrel avoiding hollow groove 203.The motor 303 that described drive unit comprises screw mandrel 301, feed screw nut 302 and is fixed on Z axis fixed head 10, described feed screw nut 302 is fixed on slide block fixed head 201, described feed screw nut 302 is arranged on screw mandrel 301, one end of screw mandrel 301 is connected with motor 303 by shaft coupling 60, and the other end of screw mandrel 301 stretches in the screw mandrel avoiding hollow groove 203 of slide block fixed head 201.Described liquid-transfering device 20 also comprises line slideway 204, and what line slideway 204 was parallel to each other is fixed on Z axis fixed head 10, and described slide block fixed head 201 is slidably arranged on line slideway 204; Z axis fixed head 10 is also provided with guide rail locating device, described in the line slideway 204 moved in liquid unit 20 be all fixed on Z axis fixed head 10 by guide rail locating device.
Further, as shown in Figure 6 a, described drive unit 30 also comprises motor fixing plate 304 and screw rod fixing plate 305, motor fixing plate 304 and screw rod fixing plate 305 are all fixed on Z axis fixed head 10, and the motor 303 moving liquid unit is all fixed on motor fixing plate 304, the screw mandrel 301 moving liquid unit is all arranged on screw rod fixing plate 305, as shown in Figure 6 b, in this example, Z axis fixed head 10 is arranged with six in parallel and moves liquid unit, motor fixing plate 305 is fixed wtih six motors 303 altogether side by side, accordingly, described screw rod fixing plate 305 is provided with six roots of sensation screw mandrel 301 altogether, it should be noted that, motor 303 quantity fixing on motor fixing plate 304 is not limited in six, only be described to illustrate in this example.Further, described screw rod fixing plate 305 is provided with six dead eyes be arranged in a linear, the spacing of adjacent shaft bearing bore is all equal, and all bearing being installed in described each dead eye, above-mentioned screw mandrel 301 is through described bearing, and all screw mandrels 301 are all fixed on same screw rod fixing plate 305, by the dimensional accuracy of workpiece, ensure the spacing accuracy of each screw mandrel 301, thus ensure the spacing accuracy respectively moving liquid unit, effectively make use of limited space simultaneously.In this example, the bearing arranged in dead eye is double-row angular contact bal bearing, precision when being rotated by double-row angular contact bal bearing guarantee screw mandrel.As fig. 6 c, described Z axis fixed head 10 is provided with multiple dowel hole 101, described screw rod fixing plate 305 is provided with corresponding multiple register pins 3050, by the adaptation of register pin 3050 with dowel hole 101, screw rod fixing plate 305 is fixed on Z axis fixed head 10, ensure that the assembly precision between screw rod fixing plate 305 and Z axis fixed head 10; Same, Z axis fixed head 10 is provided with multiple dowel hole, and motor fixing plate 304 is provided with corresponding multiple register pins, by the adaptation of register pin and dowel hole, motor fixing plate 304 is fixed on Z axis fixed head, ensure that the assembly precision between motor fixing plate 304 and Z axis fixed head.In this example, each pipettor 202 all has independent drive unit 30, by the effect of motor 303 in drive unit 30, can realize the driving to single pipettor 202, realize moving up and down of single pipettor 202, thus realize single passage sampling, move liquid.
On the basis of above-mentioned any scheme, described Z axis structure also comprises lower caging device 40 and the origin point position detecting unit 50 for detecting described pipettor origin position.Such as, as shown in Figure 7, on the basis of example described in Fig. 6 a, described Z axis structure comprises lower caging device 40, in this example, described lower caging device 40 is microswitch, microswitch is arranged on immediately below pipettor 202, slide downward on pipettor 202 and slide block fixed head 201 1 coexist line slideway 204, when pipettor 202 moves to bottom dead center position, pipettor 202 touches microswitch, trigger microswitch and send a signal to the control gear moving liquid module, the control gear moving liquid module then controls motor 303, motor 303 is stopped operating, slide block fixed head 201 and pipettor 202 stoppings move down.As shown in Figure 7, described Z axis structure also comprises origin point position detecting unit 50, in this example, described origin point position detecting unit 50 is light groove switch, described smooth groove switch fixes screw mandrel 301 with on the connecting portion of double-row angular contact bal bearing, and each pipettor 202 correspondence be provided with a light groove switch, this light groove switch is for detecting the origin position of pipettor 202, when pipettor 202 moves to position, the top, detected by the position of light groove Switch Controller pipettor 202, judge whether pipettor 202 is in origin position; Calibrate the position of each pipettor 202, raising pipettor 202 is in precision during origin position.It should be noted that, in this example, be not limited in above-mentioned scheme, such as, described lower position switch 40 can be position transducer, by the position residing for position transducer perception pipettor 202, when pipettor 202 moves to bottom dead center position, position transducer sends a signal to the control gear moving liquid module, and the control gear moving liquid module then controls motor 303, motor 303 is stopped operating, and slide block fixed head 201 and pipettor 202 stoppings move down.
The foregoing is only preferable examples of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. move a Z axis structure for liquid module, it is characterized in that: described Z axis structure comprises Z axis fixed head and is arranged on, and Z axis fixed head moves liquid unit, described in move liquid unit and be made up of drive unit and liquid-transfering device;
Described liquid-transfering device comprises slide block fixed head and is arranged on the pipettor on slide block fixed head, and described slide block fixed head is provided with a screw mandrel avoiding hollow groove;
The motor that described drive unit comprises screw mandrel, feed screw nut and is fixed on Z axis fixed head, described feed screw nut is fixed on slide block fixed head, described feed screw nut is arranged on screw mandrel, and one end of screw mandrel is connected with motor, and the other end of screw mandrel stretches in the screw mandrel avoiding hollow groove of slide block fixed head.
2. Z axis structure of moving liquid module according to claim 1, is characterized in that: described Z axis fixed head is arranged with in parallel and multiplely moves liquid unit.
3. Z axis structure of moving liquid module according to claim 2, it is characterized in that: described liquid-transfering device also comprises line slideway, what described multiple line slideway was parallel to each other is fixed on Z axis fixed head, and the slide block fixed head of described each liquid-transfering device slides and is arranged on the line slideway of this liquid-transfering device.
4. Z axis structure of moving liquid module according to claim 3, is characterized in that: described Z axis fixed head is provided with guide rail locating device, described in the line slideway moved in liquid unit be all fixed on Z axis fixed head by guide rail locating device.
5. Z axis structure of moving liquid module according to claim 4, is characterized in that: described slide block fixed head is provided with pipettor locating device, described in move liquid unit pipettor be fixed on described slide block fixed head by pipettor locating device.
6. Z axis structure of moving liquid module according to claim 5, is characterized in that: described guide rail locating device and pipettor locating device are register pin or projection, is provided with dowel hole or groove on corresponding described line slideway He on pipettor.
7. Z axis structure of moving liquid module according to claim 1, is characterized in that: described screw mandrel avoiding hollow groove is through the through hole of slide block fixed head or for being arranged at the blind hole on slide block fixed head.
8. Z axis structure of moving liquid module according to claim 1, is characterized in that: described drive unit also comprises motor fixing plate and screw rod fixing plate, and described motor fixing plate and screw rod fixing plate are all fixed on Z axis fixed head; The motor moving liquid unit is arranged on motor fixing plate, and the screw mandrel moving liquid unit is arranged on screw rod fixing plate.
9. Z axis structure of moving liquid module according to claim 8, is characterized in that: described Z axis fixed head is provided with multiple dowel hole, and described screw rod fixing plate and motor fixing plate are provided with corresponding multiple register pins.
10. Z axis structure of moving liquid module according to claim 8, it is characterized in that: described screw rod fixing plate is provided with the multiple dead eyes be arranged in a linear, the spacing of adjacent shaft bearing bore is all equal, and is all provided with bearing in described each dead eye, and described screw mandrel is through bearing.
11. according to claim 1ly move liquid module Z axis structure, it is characterized in that: described Z axis structure also comprises lower caging device and the origin point position detecting unit for detecting described pipettor origin position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510705206.9A CN105372441A (en) | 2015-10-27 | 2015-10-27 | Z-axis structure of liquid moving module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510705206.9A CN105372441A (en) | 2015-10-27 | 2015-10-27 | Z-axis structure of liquid moving module |
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| CN105372441A true CN105372441A (en) | 2016-03-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113771018A (en) * | 2021-09-27 | 2021-12-10 | 广州金辰自动化科技有限公司 | Unit plate assembly, independently movable variable-pitch pipetting mechanical arm and pipetting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113771018A (en) * | 2021-09-27 | 2021-12-10 | 广州金辰自动化科技有限公司 | Unit plate assembly, independently movable variable-pitch pipetting mechanical arm and pipetting system |
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Application publication date: 20160302 |
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