CN209417063U - A kind of full-automatic micro-sampling arm of small-sized single-pass - Google Patents
A kind of full-automatic micro-sampling arm of small-sized single-pass Download PDFInfo
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- CN209417063U CN209417063U CN201822039276.7U CN201822039276U CN209417063U CN 209417063 U CN209417063 U CN 209417063U CN 201822039276 U CN201822039276 U CN 201822039276U CN 209417063 U CN209417063 U CN 209417063U
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- China
- Prior art keywords
- needle
- withdraw
- sample introduction
- mounting plate
- plate
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Abstract
The utility model discloses a kind of small-sized full-automatic micro-sampling arm of single-pass, including rectangle fixed plate, the fixed plate upper surface is equipped with suction mechanism, withdraw of the needle mechanism, testing agency；There is fixed plate for connecting suction nozzle mounting post and pipettor in the suction mechanism, has pressure pipeline in the fixed plate, be mounted with pressure sensor in the pressure pipeline.The small size automatic micro-sampling arm that the utility model is announced, structure is simple, completes the operation such as the withdraw of the needle, imbibition, liquid separation by a motor, carries out pressure monitoring and detecting liquid level to pipetting processes by pressure sensor, stability is good, and high reliablity is practical.
Description
Technical field
The present invention relates to biochemistry detection instrument, especially a kind of full-automatic micro-sampling arm of small-sized single-pass.
Background technique
The automation of existing biochemical analysis field can be improved detection accuracy and reduce the manual labor of people, currently increasingly
More products has the characteristics of real Ke Xunhuanliyong, multipurpose uses, and biochemical instrument is made to have extensive versatility.
Summary of the invention
The purpose of the present invention is to solve the above problems, devise a kind of full-automatic micro-sampling arm of small-sized single-pass.
Realize above-mentioned purpose the technical scheme is that, a kind of small-sized full-automatic micro-sampling arm of single-pass, including rectangular
Shape fixed plate, the fixed plate upper surface are equipped with suction mechanism, withdraw of the needle mechanism, and testing agency, the suction mechanism is by being mounted on
The mounting plate of fixed plate front surface, be mounted on fixed plate one end motor fixing plate parallel with mounting plate, mounting plate upper surface with
Motor mounting plate is embedded in one group of flange bearing, the lead screw being inserted on one group of flange bearing, the peace in mounting plate lower surface relatively
The high-precision sample introduction needle cavity of dress, needle mouth corresponding with high-precision sample introduction needle cavity and the suction being mounted on sample introduction needle mounting plate
It is common that headstock, one end are inlaid in the other end is mounted in lead screw push plate in high-precision sample introduction needle cavity piston rod, transmission mechanism
It constitutes, the withdraw of the needle mechanism is by being symmetrically embedded in a pair of of cylindrical guide on mounting plate both sides, a pair being coupled with cylindrical guide
Ejector sleeve, ejector sleeve lower end connect and withdraw of the needle push plate are housed, withdraw of the needle push plate two sides are symmetrically installed with the withdraw of the needle connecting rod being connected with withdraw of the needle seat,
Spring matched with withdraw of the needle connecting rod collectively forms.
The testing agency is by being fixedly mounted on the pressure sensor, margin microswich and electricity at sample introduction needle mounting plate center
Road plate collectively forms, and the fixed plate rear side surface is equipped with controller.
The transmission mechanism is by the stepper motor being mounted on motor fixing plate, the synchronous belt of stepper motor round end installation
Wheel A, the synchronous pulley B of lead screw one end connection, it is collectively formed with synchronous pulley A and synchronous pulley the B synchronous belt to match.
The lateral push handle item of the suction mechanism is mounted on fixed plate, and the small-sized full-automatic micro-sampling arm of single channel is whole
Body is used cooperatively as sliding block and one group of sliding rail in fixed plate.
The lateral push handle item of the suction mechanism is equipped with the silk matched with transverse shifting lead screw far from the position of fixed plate
Thick stick nut.
The withdraw of the needle mechanism by the elastic compression withdraw of the needle push plate of compressed spring so that the withdraw of the needle seat of the withdraw of the needle mechanism to
On be pressed on the lower section of sample introduction needle mounting plate.
The withdraw of the needle seat of the withdraw of the needle mechanism and withdraw of the needle push plate are rigidly connected by withdraw of the needle connecting rod.
The sample introduction needle cavity both ends connecting pin of the suction mechanism is equipped with seal pipe screw needle mouth, passes through pipe screw thread and sample introduction
Mounting plate is tightly connected, and sample cavity mounting plate upper surface is provided with sealing threaded hole, uses sealing pipe thread seal, mounting plate following table
Face is provided with shrinkage pool, and needle mouth is equipped with groove, and sample introduction needle cavity is threadedly coupled to match with shrinkage pool and groove by seal pipe to be merged equipped with close
Gasket.
The pressure sensor is located at the connection of sample introduction needle mounting plate central seal, and the margin microswich is located at fixed plate
On.
The controller is made of control chip, driving chip and driving power.
The controller is electrical connected respectively at stepper motor, margin microswich, pressure sensor.
A kind of small-sized full-automatic micro-sampling arm of single-pass with pressure monitoring function is devised, using screw rod and pipettor
Piston rod misplaces the mode of parallelly distribute on and stroke planning, completes the taking of pipetting tip with a driving link, moves back, sample reagent
The multiple functions such as absorption and discharge, save operating space.In such a way that pressure sensor pipeline is embedded in pipettor cavity
The length for reducing pressure pipeline improves the sensitivity of pressure detecting.The device can be automatically performed the items of micropipette process
Operation, while utilizing the level detection and liquid relief fault detection of pressure sensor realization pipetting processes.
Detailed description of the invention
Fig. 1 is the structural front view of the full-automatic micro-sampling arm of small-sized single channel of the present invention；
Fig. 2 is the structure right view of the full-automatic micro-sampling arm of small-sized single channel of the present invention；
Fig. 3 is the withdraw of the needle structure partial enlarged drawing of the full-automatic micro-sampling arm of small-sized single channel of the present invention；
In figure, 1, syringe needle；2, withdraw of the needle seat；3, sample introduction needle mounting plate；4, needle mouth；5, pressure sensor；6, spring；7, the withdraw of the needle
Connecting rod；8, withdraw of the needle push plate；9, sample cavity；10, push rod；11, sample cavity mounting plate；12, cylindrical guide；13, piston rod；14, straight
Spool is held；15, piston rod push plate；16, feed screw nut；17, lead screw；18, flange bearing；19, motor mounting plate；20, synchronous belt
Take turns B；21, synchronous pulley A；22, synchronous belt；23, fixed plate；24, stepper motor；25, encoder；26, lateral push handle item；27,
Horizontal leading screw nut；28, linear guide；29, suction nozzle seat；30, margin microswich；31, screw；32, chip is controlled；33, it drives
Dynamic chip；34, driving power.
Specific embodiment
The present invention is specifically described with reference to the accompanying drawing, as shown in Figure 1, a kind of small-sized single channel it is full-automatic it is micro into
Sample arm,
The characteristics of the present embodiment is that fixed plate upper surface is equipped with suction mechanism, withdraw of the needle mechanism, and suction mechanism is by being mounted on
The mounting plate of fixed plate front surface, the mounting plate for being mounted on fixed plate front surface, mounting plate be equipped with high-precision sample introduction needle cavity,
One end be inlaid in the piston rod that the other end is mounted on piston push plate in high-precision sample introduction needle cavity, be mounted on fixed plate one end with
Mounting plate parallel motor fixing plate, is inserted into one at mounting plate upper surface embedded one group of flange bearing opposite with motor mounting plate
Lead screw on group flange bearing, needle mouth corresponding with high-precision sample introduction needle cavity and suction nozzle on sample introduction needle mounting plate
Seat, one end are inlaid in the common structure of piston rod, transmission mechanism that the other end in high-precision sample introduction needle cavity is mounted in lead screw push plate
At the withdraw of the needle mechanism is by being symmetrically embedded in a pair of of cylindrical guide on mounting plate both sides, pushing away with a pair that cylindrical guide is coupled
Pipe, the connection of ejector sleeve lower end equipped with withdraw of the needle push plate, withdraw of the needle push plate two sides be symmetrically installed with the withdraw of the needle connecting rod being connected with withdraw of the needle seat, with
The matched spring of withdraw of the needle connecting rod collectively forms.
In the present embodiment, synchronous motor is housed in the motor mounting plate of dead plate upper end, motor round end is equipped with same
Belt wheel A is walked, lead screw is mounted between mounting plate and motor fixing plate by flange bearing, and lead screw one end is equipped with synchronous pulley B, together
Step belt wheel A is driven with synchronous pulley B by synchronous band connection, connect piston push plate, piston with the feed screw nut that screw rod matches
Two linear guides are housed, two are equipped with linear bearing between linear guide and piston push plate, to guarantee that piston pushes away in push plate
Bar steadily moves under the drive of lead screw, and high-precision sample introduction needle cavity connects sample introduction needle mounting plate, sample introduction needle peace by pipe screw thread
Loading board is equipped with suction nozzle seat, suction nozzle seat and sample introduction needle cavity and guarantees connection sealing by gasket seal, and suction nozzle seat tool has installation primary
Property syringe needle effect, sample introduction needle cavity is equipped with piston rod, and piston rod one end is connected with piston push rod, realization system suction function.
In the present embodiment, the withdraw of the needle seat connect with withdraw of the needle push plate by withdraw of the needle connecting rod, piston push rod move down thus
Withdraw of the needle ejector sleeve is pushed, withdraw of the needle ejector sleeve pushes down on withdraw of the needle push plate, and withdraw of the needle push plate pushes withdraw of the needle connecting rod to push withdraw of the needle seat to move down,
Suction nozzle is set to fall off from suction nozzle seat, so as to realize withdraw of the needle function, the withdraw of the needle is completed, and piston push plate moves up, recoil of spring
Withdraw of the needle seat is driven to return to original position.
In the present embodiment, when sample-adding, the meeting when disposable aspiration needle installs, suction mechanism carries out imbibition operation, liquid
Body forms confined space after entering suction nozzle, and pressure sensor is placed in sample introduction needle mounting plate, and system can detect imbibition feelings
Condition.This approach reduces the length of pressure pipeline, the sensitivity of pressure detecting is improved, and imbibition state is supervised in real time
It surveys.
In the present embodiment, driving power is connected with peripheral circuit, driving chip control port 1 and stepper motor phase
Even, control port 2 is connected by electric wire with control chip, is formed by electric wire feedback control chip, limit switch feedback end
Entire control system.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art
The principle of the present invention is embodied to some variations that some of them part may be made, belongs to the scope of protection of the present invention it
It is interior.
Claims (10)
1. a kind of full-automatic micro-sampling arm of small-sized single-pass, including rectangle fixed plate (23), which is characterized in that the fixed plate
(23) upper surface is equipped with suction mechanism, withdraw of the needle mechanism, testing agency, and the suction mechanism is by being mounted on fixed plate (23) front surface
Mounting plate (11), be mounted on fixed plate (23) one end motor fixing plate (19) parallel with sample cavity mounting plate (11), sample introduction
Chamber mounting plate (11) upper surface is opposite with motor mounting plate to be embedded in one group of flange bearing (18), is inserted into one group of flange bearing (18)
On lead screw (17), install below the sample cavity mounting plate (11) high-precision sample introduction needle cavity (9), be mounted on sample cavity installation
Plate (11) lower surface needle mouth (4) corresponding with high-precision sample introduction needle cavity (9), the suction nozzle seat (29) of syringe needle (1), one end are embedded in
It is common that piston rod (13), transmission mechanism on piston rod push plate (15) are mounted in high-precision sample introduction needle cavity (9) interior other end
It constitutes, the withdraw of the needle mechanism is by symmetrically embedded in a pair of of cylindrical guide (12) and cylindrical guide of sample cavity mounting plate (11) two sides
(12) linear bearing (14) that a pair of of withdraw of the needle ejector sleeve (10) for being coupled, cylindrical guide (12) are connect with sample introduction needle push plate moves back
The connection of needle ejector sleeve (10) lower end is symmetrically installed with and is connected with withdraw of the needle seat (2) equipped with withdraw of the needle push plate (8), withdraw of the needle push plate (8) two sides
Withdraw of the needle connecting rod (7), matched spring (6) collectively forms with withdraw of the needle connecting rod (7), the testing agency is by being fixedly mounted on sample introduction
Pressure sensor (5), margin microswich (30) and the controller at needle mounting plate (3) center collectively form, the fixed plate
(23) rear side surface is equipped with controller.
2. a kind of small-sized full-automatic micro-sampling arm of single-pass according to claim 1, which is characterized in that the transmission mechanism
By stepper motor (24), the encoder (25) of stepper motor (24) rear end installation, stepping being mounted on motor fixing plate (19)
The synchronous pulley A (21) of motor (24) round end installation, the synchronous pulley B (20) of lead screw one end connection and synchronous pulley A (21)
The synchronous belt (22) to match with synchronous pulley B (20) collectively forms.
3. a kind of small-sized full-automatic micro-sampling arm of single-pass according to claim 1, which is characterized in that the suction mechanism
Lateral push handle item (26) be mounted on rear side of fixed plate (23), the lateral push handle item (26) of the suction mechanism is far from fixed plate
(23) position is equipped with the horizontal leading screw nut (27) matched with transverse shifting lead screw.
4. a kind of small-sized full-automatic micro-sampling arm of single-pass according to claim 1, which is characterized in that the withdraw of the needle mechanism
Withdraw of the needle push plate (8) and sample introduction needle mounting plate (3) between be equipped with spring (6).
5. a kind of small-sized full-automatic micro-sampling arm of single-pass according to claim 1, which is characterized in that the withdraw of the needle mechanism
Spring (6) elastic compression withdraw of the needle push plate (8) so that the withdraw of the needle mechanism withdraw of the needle seat (2) upwards compress sample introduction needle installation
Plate (3).
6. a kind of small-sized full-automatic micro-sampling arm of single-pass according to claim 1, which is characterized in that the withdraw of the needle mechanism
Withdraw of the needle seat (2) and withdraw of the needle push plate (8) pass through withdraw of the needle connecting rod (7) be rigidly connected.
7. a kind of small-sized full-automatic micro-sampling arm of single-pass according to claim 1, which is characterized in that the suction mechanism
Sample introduction needle cavity (9) both ends connecting pin be equipped with seal pipe screw needle mouth (4), it is close by pipe screw thread and sample introduction needle mounting plate (3)
Envelope connection, sample introduction needle mounting plate (3) upper surface are provided with sealing threaded hole, use sealing pipe thread seal, sample introduction needle mounting plate (3)
Lower surface is provided with shrinkage pool, and needle mouth (4) is equipped with groove, and sample introduction needle cavity (9) is connected through a screw thread to match to merge with shrinkage pool and groove and set
There is gasket seal.
8. a kind of small-sized full-automatic micro-sampling arm of single-pass according to claim 1, which is characterized in that the pressure sensing
Device is located at the connection of sample introduction needle mounting plate (3) central seal, and the margin microswich (30) is located at fixed plate (23) side.
9. a kind of small-sized full-automatic micro-sampling arm of single-pass according to claim 1, which is characterized in that the controller is
It is made of control chip (32), driving chip (33) and driving power (34).
10. a kind of small-sized full-automatic micro-sampling arm of single-pass according to claim 1, which is characterized in that the controller
It is electrical connected respectively at stepper motor (24), margin microswich (30), pressure sensor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822039276.7U CN209417063U (en) | 2018-11-29 | 2018-11-29 | A kind of full-automatic micro-sampling arm of small-sized single-pass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822039276.7U CN209417063U (en) | 2018-11-29 | 2018-11-29 | A kind of full-automatic micro-sampling arm of small-sized single-pass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209417063U true CN209417063U (en) | 2019-09-20 |
Family
ID=67936899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822039276.7U Expired - Fee Related CN209417063U (en) | 2018-11-29 | 2018-11-29 | A kind of full-automatic micro-sampling arm of small-sized single-pass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209417063U (en) |
-
2018
- 2018-11-29 CN CN201822039276.7U patent/CN209417063U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190920 Termination date: 20201129 |