CN212083465U - Automatic sample introduction device - Google Patents

Abstract

The utility model relates to an automatic sampling device, including rotating the base that sets up on first support, rotate a plurality of sample framves of being connected through round pin axle and base respectively to and drive sample frame around round pin axle pivoted drive arrangement. The utility model realizes sample introduction through the rotation motion of the base and the linear motion of the sample introduction needle in the vertical direction, and realizes the turnover of the sample by utilizing the sample frame turnover motion mechanism, thereby achieving the purpose of uniformly mixing the sample; the device has the advantages of compact structural design, small occupied space, few driving mechanisms, flexible operation and convenient sample disassembly.

Description

Automatic sample introduction device

Technical Field

The utility model relates to an analysis experiment equipment technical field especially involves an automatic sampling device.

Background

In the medical field, the sample introduction process is a necessary link for biochemical analysis of collected samples. Most hospitals and scientific research institutions still adopt the mode of manual sample introduction and sample changing at present, so that the work task of experimenters is heavy, and the work efficiency is low.

Although some automatic sample feeding devices exist in the market at present, most of the automatic sample feeding devices are individually designed according to specific instruments, and are low in universality and high in price. Moreover, most of the existing automatic sampling mechanisms do not have a sample mixing function, so that the whole sampling equipment cannot complete sample introduction of samples to be mixed uniformly, and the use scene of the automatic sampling equipment is limited.

Disclosure of Invention

The utility model discloses to prior art not enough, provide an automatic sampling device, can satisfy the requirement of advancing of multiple instrument to the sample mixing of advance kind in-process has been realized.

The utility model discloses a following technical scheme realizes, provides an autoinjection device, including rotating the base that sets up on first support, rotate a plurality of sample framves of being connected through round pin axle and base respectively to and drive sample frame around round pin axle pivoted drive arrangement.

This optimization scheme is when using, puts the sample on the sample frame, rotates the sample frame to the sample position in proper order through rotating the base, rotates the in-process of appearance of advancing at the base, sways through drive arrangement drive sample frame, has realized that the sample shakes evenly.

As optimization, the sample racks are distributed along a circle with the rotation center of the base as the center of circle. The setting of this optimization scheme makes each sample frame form cylindricly to make the sample position that all sample frames correspond unanimously, the horizontal position of sampling equipment need not to change, only need the sampling needle reciprocate can.

Preferably, the driving device comprises a pushing mechanism moving towards the sample rack in a reciprocating mode and a torsion spring sleeved on the pin shaft, and the sample rack is connected with the pin shaft through the torsion spring. This optimization scheme utilizes pushing mechanism to promote the sample frame to swing to one side, and the torsional spring takes place deformation simultaneously, and when pushing mechanism withdrawed, the effect that utilizes the torsional spring was with sample frame swing back to realized sample frame reciprocating swing, reached good sample mixing effect.

As optimization, the pushing mechanism comprises a sliding block for pushing the sample frame, a second support fixedly arranged and a driving motor connected with the sliding block through a crank rocker mechanism, a sliding block seat is fixedly arranged on the second support, and a sliding groove which extends towards the sample frame and is matched with the sliding block is formed in the sliding block seat. This optimization scheme passes to driving motor's power to the slider through crank rocker mechanism to promote slider along spout reciprocating motion, simple structure, the periodicity is good, provides the direction for the slider through the spout that sets up, has guaranteed the uniformity of slider moving direction.

Preferably, the crank-rocker mechanism comprises a crank hinged with the sliding block and a rocker hinged with the crank, the rocker is fixedly connected with a gear shaft, a driven gear is fixedly arranged on the gear shaft, and a driving gear meshed with the driven gear is fixedly arranged at the output end of the driving motor. According to the optimized scheme, the gear shaft is driven to rotate through the gear drive belt, so that the rocker and the crank are driven to move, the structure is simple, and the transmission is reliable.

Preferably, the base is provided with a gear ring meshed with the driving gear. This optimization scheme utilizes driving motor to drive base and gear shaft simultaneously and rotates, has both saved the cost, has guaranteed the synchronous of appearance and mixing again and has gone on.

Preferably, the number of the sample racks is eight, and the number of the teeth of the gear ring is eight times that of the driven gear. The optimized scheme sets the eight sample racks, so that the central angle corresponding to each sample rack is 45 degrees, the processing is convenient, and the gear ring and the driven gear teeth are arranged, so that the rotation angular speed ratio of the base to the rocker is 1:8, and the sample mixing and sample introduction processes are coordinated.

As optimization, the first support comprises at least three vertical rods distributed along the circumferential direction, bearings are installed at the upper ends of the vertical rods, and positioning tables tangent to the bearings are fixedly arranged on the base. This optimization scheme's first support simple structure utilizes the bearing to carry out horizontal restriction to the location platform to fix a position the base, avoid the rotation center skew of base, thereby guaranteed the accuracy nature of sample frame appearance position.

As optimization, still include the linear actuator who is located base one side to and the syringe needle of the removal portion rigid coupling with linear actuator, the syringe needle is located the sample frame top. This optimization scheme drives the syringe through the linear actuator and reciprocates and takes a sample, and simple structure has further improved kind efficiency.

Preferably, the linear driver further comprises a bottom plate, and the first bracket, the driving device and the linear driver are all mounted on the bottom plate. This optimization scheme makes each part form a whole through setting up the bottom plate, makes things convenient for overall movement and transportation, has improved the wholeness of device.

The utility model has the advantages that: the sample introduction is realized through the rotation motion of the base and the linear motion of the sample introduction needle in the vertical direction, and the overturning of the sample is realized by utilizing the sample frame overturning motion mechanism, so that the purpose of uniformly mixing the sample is achieved; the device has the advantages of compact structural design, small occupied space, few driving mechanisms, flexible operation and convenient sample disassembly.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic structural view of the driving device of the present invention;

FIG. 4 is a schematic view of a sample rack mounting structure;

shown in the figure:

100. the sample injection device comprises a sample frame module 200, a sample injection needle module 210, a support frame 220, a linear driver 230, a sample injection needle 310 and a base. 320. The device comprises a driving gear 330, a driving motor 340, a first bracket 350, a motor base 360, a bottom plate 370, a bearing 380, a torsion spring 390, a pin shaft 3100, a sample frame 400, a driving device 410, a slider base 420, a slider 430, a crank 440, a rocker 450, a gear shaft 460 and a second bracket.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 1, the automatic sample introduction device includes a sample rack module 100 and a sample needle module 200 located at one side of the sample rack module 100, wherein the sample rack module 100 and the sample needle module 200 are both mounted on a bottom plate 360.

The sample rack module 100 includes a base 310 rotatably disposed on the first support 340, eight sample racks 3100 rotatably connected to the base via pins 390, and a driving device 400 for driving the sample racks to rotate around the pins, wherein the sample racks are distributed along a circumference around a rotation center of the base, so that the sample racks form a cylindrical shape, sample placement holes extending downward from a top are formed in the sample racks, and the sample placement holes are distributed along a circumference around a rotation center of the base. The base is the ring shape, and the upper surface of base sets firmly along eight mount pads of circumference evenly distributed, and the round pin axle is worn to establish on the mount pad.

The driving device comprises a pushing mechanism which moves towards the sample rack in a periodic reciprocating manner and a torsion spring 380 which is sleeved on the pin shaft, and the sample rack is connected with the pin shaft through the torsion spring. Pushing mechanism is located the drum inboard that the sample frame formed, and is concrete, pushing mechanism is including the slider 420 and the fixed second support 460 that sets up that promote the sample frame to and the driving motor 330 of being connected with the slider through crank rocker mechanism, the lower extreme and the bottom plate rigid coupling of second support, and upwards pass the hole of base, and the upper end of second support has set firmly slider seat 410, set up on the slider seat towards the sample frame extend and with the spout of slider adaptation, the spout level sets up and follows the radial extension of sample frame place circumference, slider moving direction and its sample frame connecting pin axle mutually perpendicular that will promote.

The crank and rocker mechanism comprises a crank 430 hinged with the sliding block and a rocker 440 hinged with one end of the crank far away from the sliding block, the crank and the rocker are both horizontally arranged, the rocker is fixedly connected with a vertically arranged gear shaft 450, the gear shaft is rotatably connected with the second support, a driven gear is fixedly arranged on the gear shaft, and a driving gear 320 meshed with the driven gear is fixedly arranged at the output end of the driving motor.

The bottom surface of the base is provided with a gear ring meshed with the driving gear, the driving gear is meshed with the gear ring and the driven gear at the same time, the number of teeth of the gear ring is eight times that of the teeth of the driven gear, the rotation angular velocity ratio of the base 310 to the rocker is ensured to be 1:8, and the sample mixing and sample introduction processes are coordinated.

The first support comprises three vertical rods which are uniformly distributed along the circumferential direction, the bearings 370 are installed at the upper ends of the vertical rods, positioning tables tangent to the bearings are fixedly arranged on the base, and the positioning tables are located on the inner sides of the circumferences of the three bearings.

The needle module 200 includes a linear driver 220 located at one side of the base, and a needle 230 fixedly connected to a moving portion of the linear driver, the needle being located above the sample holder. In order to improve the integrity of the device, the present embodiment further includes a bottom plate 360, the first support, the driving device and the linear actuator are all installed on the bottom plate, and the motor base 350 for installing the driving motor and the supporting frame 210 for installing the linear actuator are fixedly installed on the bottom plate.

When in use, on one hand, the driving motor 330 drives the circular base 310 to rotate through gear engagement, and a sample to be loaded is conveyed to the same vertical position as the sample injection needle 230; on the other hand, the linear driver 220 performs linear motion in the vertical direction to drive the sample injection needle 220 to perform up-and-down motion, thereby completing the sample suction process. Meanwhile, the driving motor 330 drives the gear shaft 450 to rotate through gear engagement movement, and the rotation movement of the driving motor 330 is converted into the linear movement of the slider 420 through the crank 430, the rocker 440 and the slider 420 in sequence; the linear reciprocating motion of the slider 420 pushes the sample frame 3100 to rotate around the pin 390, and when the slider moves back, the torsion spring 380 located on the pin enables the sample frame 3100 to rotate reversely to reset, so as to achieve the uniform mixing of the samples.

Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.

Claims (10)

1. An automatic sampling device which is characterized in that: the device comprises a base (310) rotatably arranged on a first support (340), a plurality of sample frames (3100) rotatably connected with the base through pin shafts (390), and a driving device for driving the sample frames to rotate around the pin shafts.

2. The automatic sample introduction device according to claim 1, wherein: the sample racks are distributed along a circumference which takes the rotating center of the base as the center of a circle.

3. The automatic sample introduction device according to claim 1, wherein: the driving device comprises a pushing mechanism moving towards the sample rack in a reciprocating mode and a torsion spring (380) sleeved on the pin shaft, and the sample rack is connected with the pin shaft through the torsion spring.

4. The autoinjection device of claim 3, wherein: the pushing mechanism comprises a sliding block (420) for pushing the sample frame, a second support (460) fixedly arranged, and a driving motor (330) connected with the sliding block through a crank and rocker mechanism, a sliding block seat (410) is fixedly arranged on the second support, and a sliding groove which extends towards the sample frame and is matched with the sliding block is formed in the sliding block seat.

5. The autoinjection device of claim 4, wherein: the crank and rocker mechanism comprises a crank (430) hinged with the sliding block and a rocker (440) hinged with the crank, the rocker is fixedly connected with a gear shaft (450), a driven gear is fixedly arranged on the gear shaft, and a driving gear (320) meshed with the driven gear is fixedly arranged at the output end of the driving motor.

6. The autoinjection device of claim 5, wherein: the base is provided with a gear ring meshed with the driving gear.

7. The autoinjection device of claim 6, wherein: the sample frame is eight, and the tooth quantity of ring gear is eight times of driven gear tooth quantity.

8. The automatic sample introduction device according to claim 1, wherein: the first support comprises at least three vertical rods distributed along the circumferential direction, bearings (370) are installed at the upper ends of the vertical rods, and positioning tables tangent to the bearings are fixedly arranged on the base.

9. The automatic sample introduction device according to claim 1, wherein: the sample injection device is characterized by further comprising a linear driver (220) located on one side of the base and a sample injection needle (230) fixedly connected with a moving part of the linear driver, wherein the sample injection needle is located above the sample rack.

10. The autoinjection device of claim 9, wherein: the device further comprises a bottom plate (360), and the first support, the driving device and the linear driver are all mounted on the bottom plate.

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