CN212432672U

CN212432672U - Automatic blood sampling device

Info

Publication number: CN212432672U
Application number: CN202021259383.1U
Authority: CN
Inventors: 韩奎亮; 周史良; 张海洋
Original assignee: Beijing Meilian Taike Biotechnology Co ltd
Current assignee: Beijing Meilian Taike Biotechnology Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-01-29
Anticipated expiration: 2030-07-01

Abstract

The utility model relates to an automatic blood sampling device, which comprises a base, wherein a vertical support is fixedly connected on the base, a horizontal bracket is fixedly connected on the support, a chute is arranged on the upper edge of the bracket, a sliding plate is connected on the chute in a sliding way, a horizontal driving mechanism for driving the sliding plate to do linear motion is arranged on the bracket, and the sliding plate is connected with a bearing mechanism for bearing a liquid adding pump, an upper and lower driving mechanism for driving the bearing mechanism to move up and down and a liquid sucking and injecting mechanism for sucking or injecting liquid by the liquid adding pump; still be equipped with sample pipe tray and reagent strip bracket on the base, the sample tray is equipped with and orders about its pivoted rotary mechanism, and the reagent strip bracket is equipped with the glide machanism that drives its removal, still is provided with the tip head on the reagent strip, and first motor and second motor are connected with the PLC electricity of coordinating both motions. The device can take a blood sample automatically, and the imbibition of liquid feeding pump, annotate the liquid precision high, operate steadily, and degree of automation is high.

Description

Automatic blood sampling device

Technical Field

The utility model belongs to the technical field of the medical equipment technique and specifically relates to an automatic blood sampling device is related to.

Background

The automatic blood sampling device is widely applied to biochemical research laboratories, hospitals and pharmaceutical companies, can be used for sample processing operations such as sample pretreatment, sample purification and amplification, sample dilution and concentration, sample preparation and the like, and generally comprises a liquid adding pump cylinder, a piston rod, a plug nozzle and the like. When liquid is sucked, the liquid is sucked into the pump cavity under the action of negative pressure in the liquid feeding pump cylinder along with the pulling of the piston rod in the liquid feeding pump cylinder; in the same way, the liquid with the same volume as the space through which the piston rod moves can be pushed out by pushing the piston rod.

Traditional blood sampling device generally includes the liquid feeding pump barrel based on the liquid feeding pump principle, sets up the piston rod in the liquid feeding pump barrel, moves the liquid through the mode of manual push-and-pull piston rod, and this working method work efficiency is low, and imbibition, notes liquid precision are poor, and easy card pause phenomenon between piston rod and the liquid feeding pump barrel influences the precision and the accuracy of blood sampling.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic sampling device that takes a blood sample, the imbibition of the device liquid feeding pump, annotate the liquid precision high, the activity is steady between piston rod and the liquid feeding pump barrel, and degree of automation is high, can take off the tip head automatically.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides an automatic blood sampling device, includes the base, a pair of vertical support of fixed connection on the base, the horizontal bracket of fixed connection on the support, be equipped with sharp spout along length direction on the bracket, sliding connection slide on the spout, be equipped with the horizontal drive mechanism that drive slide made linear motion along the spout on the bracket, the slide is connected with the bearing mechanism who bears the liquid feeding pump, drives the upper and lower actuating mechanism that bearing mechanism reciprocated and is used for the imbibition of liquid feeding pump or notes liquid mechanism of notes liquid of notes.

The upper and lower driving mechanism comprises a first mounting frame which is fixed on the sliding plate and is vertically arranged, a vertical first sliding rail is arranged on the first mounting frame, a first sliding block is connected on the first sliding rail in a sliding mode, a first supporting plate is fixedly connected with the first sliding block, a first motor is fixedly connected to the upper end of the first mounting frame, a vertical downward first lead screw is connected to the output end of the first motor, and a first lead screw nut is fixedly connected with the first supporting plate and matched with the first lead screw.

Inhale notes liquid mechanism includes fixed connection and on first layer board and the second mounting bracket of vertical setting, be equipped with vertical second slide rail on the second mounting bracket, sliding connection second slider on the second slide rail, second slider fixed connection second layer board, second mounting bracket upper end fixed connection second motor, vertical downward second lead screw is connected to the output of second motor, second layer board fixed connection and the second lead screw nut of second lead screw adaptation.

The bearing mechanism comprises a pulling plate and a bearing block, the pulling plate is fixed on the outer side of the second supporting plate, a pulling groove with an outward opening is formed in the pulling plate, the bearing block is arranged below the pulling plate and fixedly connected to the second mounting frame, a vertical containing groove coaxial with the pulling groove is formed in the bearing block, an expanding containing cavity is formed in the middle of the containing groove, the liquid adding pump comprises a liquid adding pipe, a push rod, a push handle and a liquid adding head, the push rod and the push handle are sequentially connected above the liquid adding pipe, the liquid adding head is connected below the liquid adding pipe, a limiting block is fixedly connected to the lower portion of the liquid adding pipe, the liquid adding pipe is embedded in the containing groove, the limiting block abuts against the lower portion of the containing cavity, a pressure spring is sleeved on the liquid adding pipe above the limiting block, the upper end of the pressure spring abuts against the upper end of the containing cavity, and the push handle of the liquid adding pump is.

The base is also provided with a sample tube tray and a reagent strip bracket, the sample tube tray is provided with a sample tube, and the sample tray is provided with a rotating mechanism for driving the sample tray to rotate; the reagent strip bracket is provided with a reagent strip, the reagent strip bracket is provided with a sliding mechanism for driving the reagent strip bracket to move on the base, and the reagent strip is also provided with a tip head.

The first motor and the second motor are electrically connected with a PLC which coordinates the movement of the first motor and the second motor.

Through adopting above-mentioned technical scheme, horizontal drive mechanism can drive the slide and make linear motion, thereby drive the liquid feeding pump on the carrier block and be horizontal linear motion together, upper and lower actuating mechanism can drive the liquid feeding pump on the carrier block and be up-and-down motion, inhale notes liquid mechanism can drive the push rod upward movement of liquid feeding pump through the lifting plate, make the liquid feeding pipe of liquid feeding pump produce the negative pressure, carry out the imbibition to the blood in the sample tube, after the liquid feeding pump absorbs the blood of settlement, the liquid feeding pump passes through PLC's coordination and moves the notes liquid hole of reagent strip, second motor work makes the second layer board move down, drive the lifting plate and moving down, the push rod is in the liquid feeding intraductal elastic component's of liquid feeding effect with the blood equivalent of absorption and is poured into the liquid hole of reagent. The device realizes the automation of blood sampling, and work efficiency is high, and the imbibition of liquid feeding pump, notes liquid precision are high, safe and reliable.

The utility model discloses further set up to: the horizontal driving mechanism comprises a first driving motor fixed at one end of the bracket, the other end of the bracket is fixedly connected with a synchronous pulley component, a synchronous belt is connected between an output shaft of the first driving motor and the synchronous pulley component, the sliding plate is fixedly connected with the synchronous belt, the sliding plate can move linearly along with the synchronous belt along the sliding groove, and the first driving motor is electrically connected with the PLC.

Through adopting above-mentioned technical scheme, first driving motor can drive the slide through the hold-in range and make linear motion along the spout to drive the length direction linear movement of liquid feeding pump along the bracket on the bearing mechanism, realize the horizontal migration of liquid feeding pump, the convenient automatic blood sampling work goes on.

The utility model discloses further set up to: the rotating mechanism comprises a bearing seat fixed on the base, a vertical first rotating shaft is rotatably connected to the bearing seat, the upper end of the first rotating shaft is fixedly connected to the bottom surface of the sample tube tray, the base is fixedly connected with a second driving motor, the second driving motor is connected with the first rotating shaft through a synchronous belt, and the second driving motor is electrically connected with a PLC.

Through adopting above-mentioned technical scheme, second driving motor passes through the hold-in range and can drive sample pipe tray circumferential direction to realize that every rotatory corresponding angle of sample pipe tray all can have a sample pipe corresponding with the liquid feeding head of liquid feeding pump, realize the accurate nature of imbibition.

The utility model discloses further set up to: the glide machanism is including fixing the slide on the base, the sliding block of reagent strip bracket below fixed connection and slide adaptation, reagent strip bracket below rotates and connects vertical second pivot, follows the slide direction of motion is equipped with the third driving motor who fixes on the base, be connected the hold-in range between third driving motor and the second pivot, sliding block and hold-in range fixed connection, PLC is connected to the third driving motor electricity.

Through adopting above-mentioned technical scheme, third driving motor can drive the sliding block through the hold-in range and take the same place to move along with the walking, and the sliding block drives reagent strip bracket along slide linear motion to realize that the reagent strip bracket every time removes corresponding distance, all can have the notes liquid hole on a reagent strip corresponding with the liquid feeding pump, realize annotating the precision of liquid.

The utility model discloses further set up to: the holding tank is provided with a limit lock pin horizontally in a penetrating way for preventing the liquid feeding pump from separating.

Through adopting above-mentioned technical scheme, spacing lockpin is worn to establish by the holding tank upper level, can prevent that the liquid feeding pump from breaking away from the holding tank at blood sampling in-process.

The utility model discloses further set up to: the other end of the first lead screw and the other end of the second lead screw are both free ends.

Through adopting above-mentioned technical scheme, guaranteeing that the other end of first layer board and second layer board up-and-down motion is under steady prerequisite, and the other end of first lead screw and the other end of second lead screw are the free end, can reduce equipment volume, reduce manufacturing cost, convenient maintenance.

The utility model discloses further set up to: the lower end of the liquid adding head is nested with the tip head, and the bearing block is also provided with a tip head removing mechanism for separating the tip head from the liquid adding pump.

Through adopting above-mentioned technical scheme, adopt on the liquid feeding head nested tip head, be convenient for carry out the imbibition and annotate the liquid, in order to prevent cross infection, the tip head is disposable, separates the tip head through taking off tip head mechanism.

The utility model discloses further set up to: take off tip first mechanism and include bearing block lower pot head establish the overhead push pedal of liquid feeding, push pedal below fixed connection cover establishes the separation sleeve pipe at the overhead liquid feeding, be equipped with the vertical bullport that link up on the bearing block, the bullport symmetry sets up in holding tank both sides, wear to establish the guide bar in the guide hole, guide bar lower extreme fixed connection push pedal, the fixed dog that links in guide bar upper end, separation spring is established to the cover on the guide bar between dog and the bearing block.

By adopting the technical scheme, when the second motor drives the second lead screw to rotate and drives the second supporting plate to move downwards, the lifting plate fixedly connected with the second supporting plate also moves downwards along with the second lead screw, when the lifting plate extrudes the guide rod downwards, the guide rod drives the push plate and the separating sleeve to move downwards integrally, the lower end of the separating sleeve extrudes the upper end of the tip head, and finally the tip head is pushed out of the liquid adding head to achieve the purpose of removing the tip head.

To sum up, the utility model discloses a beneficial technological effect does:

1. the liquid feeding pump is horizontally moved through the horizontal driving mechanism, the circumferential rotation of the sample tube tray is realized through the rotating mechanism, the liquid feeding head corresponds to the sample tube, and the liquid feeding hole of the reagent strip corresponds to the liquid feeding head through the sliding mechanism; the tip head gets into sample pipe imbibition, moves the notes liquid hole of reagent strip and annotates the liquid, and the liquid mechanism is annotated through inhaling realizes pushing away the promotion or the release of handle to the liquid feeding pump to realize the imbibition or the notes liquid of liquid feeding pump, the device degree of automation is high, and the push rod motion of liquid feeding pump is steady, and the imbibition of blood, annotate the liquid accurate, degree of automation is high.

2. Through setting up and taking off tip head mechanism, can realize tip head and the autosegregation of liquid feeding head through taking off tip head mechanism after once taking a blood sample and taking a sample to accomplish, prevent the cross infection of blood sampling sample process.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the up-down driving mechanism, the liquid sucking and injecting mechanism and the bearing mechanism of the present invention;

FIG. 3 is a schematic structural view of the up-down driving mechanism of the present invention;

FIG. 4 is a schematic structural view of the liquid sucking and injecting mechanism of the present invention;

fig. 5 is a schematic structural diagram of the bearing mechanism of the present invention;

FIG. 6 is a schematic structural view of the tip removing head of the present invention;

fig. 7 is a schematic structural diagram of the sample tube tray rotating mechanism and the reagent strip tray sliding mechanism of the present invention.

Figure, 1, base; 11. a support; 12. a bracket; 121. a slide plate; 2. a horizontal driving mechanism; 21. a first drive motor; 22. a synchronous pulley assembly; 3. a carrying mechanism; 31. a bearing block; 311. accommodating grooves; 3111. an accommodating chamber; 32. lifting the plate; 3211. lifting the groove; 3112. a limit lock pin; 4. an up-down driving mechanism; 41. a first mounting bracket; 42. a first slide rail; 43. a first pallet; 44. a first motor; 45. a first lead screw; 46. a first lead screw nut; 5. a liquid sucking and injecting mechanism; 51. a second mounting bracket; 52. a second slide rail; 53. a second pallet; 54. a second motor; 55. a second lead screw; 56. a second lead screw nut; 6. A liquid adding pump; 61. a liquid feeding pipe; 62. a push rod; 63. a push handle; 64. a liquid adding head; 65. a limiting block; 66. a pressure spring; 7. a sample tube tray; 71. a sample tube; 72. a rotation mechanism; 721. a second drive motor; 8. a reagent strip carrier; 81. a reagent strip; 82. a sliding mechanism; 821. a slideway; 822. a third drive motor; 83. tip head; 9. a tip head removing mechanism; 91. pushing the plate; 92. separating the casing; 93. a guide rod; 931. a stopper; 94. the spring is disengaged.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, an automatic blood sampling device comprises a base 1, a pair of vertical supports 11 is fixedly connected to the base 1, a horizontal bracket 12 is fixedly connected to the supports 11, a linear sliding groove is formed in the bracket 12 along the length direction, a sliding plate 121 is slidably connected to the sliding groove, and a horizontal driving mechanism 2 for driving the sliding plate 121 to linearly move along the sliding groove is arranged on the bracket 12. The horizontal driving mechanism 2 comprises a first driving motor 21 fixed at one end of the bracket 12, a synchronous pulley component 22 is fixedly connected at the other end of the bracket 12, a synchronous belt is connected between an output shaft of the first driving motor 21 and the synchronous pulley component 22, a sliding plate 121 is fixedly connected with the synchronous belt through a clamping plate, and the sliding plate 121 can move linearly along with the synchronous belt along a sliding chute.

The sliding plate 121 is connected with a bearing mechanism 3 for bearing the liquid adding pump 6, an up-and-down driving mechanism 4 for driving the bearing mechanism 3 to move up and down, and a liquid sucking and injecting mechanism 5 for sucking or injecting liquid by the liquid adding pump 6.

The first driving motor 21 can drive the sliding plate 121 to do linear motion along the sliding groove through the synchronous belt, so as to drive the liquid adding pump 6 on the bearing mechanism 3 to linearly move along the length direction of the bracket 12, so that the horizontal movement of the liquid adding pump 6 is realized, the liquid adding pump 6 can be close to or far away from the sample tube 71 or the reagent strip 81 in the horizontal direction, and the sampling work of the automatic blood sampling work is facilitated.

As shown in fig. 2 and 3, the up-down driving mechanism 4 of the present embodiment includes a first mounting bracket 41 fixed on the sliding plate 121 and vertically disposed, a vertical first sliding rail 42 is disposed on the first mounting bracket 41, a first sliding block is slidably connected to the first sliding rail 42, the first sliding block is fixedly connected to a first supporting plate 43, a first motor 44 is fixedly connected to an upper end of the first mounting bracket 41, an output end of the first motor 44 is connected to a vertical downward first lead screw 45, and the first supporting plate 43 is fixedly connected to a first lead screw nut 46 adapted to the first lead screw 45. By the up-and-down driving mechanism 4, the liquid adding pump 6 can be close to or far away from the sample tube 71 or the reagent strip 81 in the up-and-down direction, and the liquid absorbing or injecting process of the liquid adding pump 6 is realized.

As shown in fig. 2 and 4, the liquid sucking and injecting mechanism 5 of the present embodiment includes a second mounting bracket 51 fixedly connected to the first supporting plate 43 and vertically disposed, a vertical second slide rail 52 is disposed on the second mounting bracket 51, a second slide block is slidably connected to the second slide rail 52, the second slide block is fixedly connected to a second supporting plate 53, a second motor 54 is fixedly connected to the upper end of the second mounting bracket 51, an output end of the second motor 54 is connected to a downward vertical second lead screw 55, and the second supporting plate 53 is fixedly connected to a second lead screw nut 56 adapted to the second lead screw 55.

As shown in fig. 2 and 5, the carrying mechanism 3 includes a pulling plate 32 and a carrying block 31, the pulling plate 32 is fixed outside the second supporting plate 53, a pulling groove 3211 with an outward opening is provided on the pulling plate 32, the carrying block 31 is provided below the pulling plate 32, the carrying block 31 is fixedly connected to the second mounting frame 51, a vertical receiving groove 311 coaxial with the pulling groove 3211 is provided on the carrying block 31, an expanding receiving cavity 3111 is provided in the middle of the receiving groove 311, the liquid adding pump 6 includes a liquid adding pipe 61, the push rod 62, push handle 63 and liquid feeding head 64, push rod 62 and push handle 63 are connected gradually to liquid feeding pipe 61 top, liquid feeding head 64 is connected to liquid feeding pipe 61 below, liquid feeding pipe 61 lower part fixed connection stopper 65, liquid feeding pipe 61 inlays to be established in holding tank 311 and stopper 65 supports and leans on and hold the chamber 3111 below, the pressure spring 66 is established to the cover on the liquid feeding pipe 61 of stopper 65 top, the pressure spring 66 upper end supports and leans on and hold the chamber 3111 upper end, liquid feeding pump 6 pushes away handle 63 and sets up in carrying and drawing groove 3211 upper end.

When the tip head 83 is embedded in the liquid adding head 64, the tip head 83 on the reagent strip 81 needs to be located under the liquid adding pipe 61, the liquid adding pump 6 is controlled to move downwards through the second motor 54, the liquid adding pipe 61 of the liquid adding pump 6 is inserted into the tip head 83, at the moment, the embedded tip head 83 provides an upward impulse force for the liquid adding pump 6, the limiting block 65 in the accommodating cavity 3111 upwards moves the liquid adding pump 6, the liquid adding pipe 61 and the tip head 83 are in flexible insertion, the tip head 83 provides buffer for the liquid adding pump 6 in the insertion process, the insertion work is smoother, the hard collision of the liquid adding pump 6 on the tip head 83 in the downward moving process can be effectively prevented, and the safety and the reliability of installation of the tip head 83 are effectively protected.

The liquid injection mechanism 5 can drive the push rod 62 of the liquid adding pump 6 to move upwards through the lifting plate 32, so that the liquid adding pipe 61 of the liquid adding pump 6 generates negative pressure, blood in the sample pipe 71 enters the liquid adding pipe 61, after the liquid adding pump 6 absorbs a set amount of blood, the liquid adding pump 6 moves to the upper side of a liquid injection hole of the reagent strip 81 through the coordination control of the PLC, the second motor 54 works to enable the second supporting plate 53 to move downwards, the lifting plate 32 is driven to move downwards, so that the lifting of the lifting plate 32 to the push rod 62 is removed, the push rod 62 plays a role of an elastic part in the liquid adding pipe 61, and the push rod 62 injects the absorbed blood into the liquid injection hole of the reagent strip 81 in an equivalent manner.

As shown in fig. 1 and 7, a sample tube tray 7 is further arranged on the base 1, a sample tube 71 is arranged on the sample tube tray 7, and a rotating mechanism 72 for driving the sample tray to rotate is arranged on the sample tray; the rotating mechanism 72 comprises a bearing seat fixed on the base 1, a vertical first rotating shaft is rotatably connected to the bearing seat, the upper end of the first rotating shaft is fixedly connected to the bottom surface of the sample tube tray 7, the base 1 is fixedly connected with a second driving motor 721, the second driving motor 721 is connected with the first rotating shaft through a synchronous belt, the second driving motor 721 can drive the sample tube tray 7 to rotate circumferentially through the synchronous belt, and therefore a sample tube 71 corresponds to a liquid adding head 64 of a liquid adding pump 6 at each corresponding rotating angle of the sample tube tray 7, and liquid absorbing accuracy is achieved.

As shown in fig. 1 and 7, the base 1 is further provided with a reagent strip bracket 8, the reagent strip bracket 8 is provided with a reagent strip 81, and the reagent strip bracket 8 is provided with a sliding mechanism 82 for driving the reagent strip bracket 8 to move on the base 1; glide machanism 82 is including fixing the slide 821 on base 1, the gliding piece of reagent strip bracket 8 below fixed connection and slide 821 adaptation, and reagent strip bracket 8 below is rotated and is connected vertical second pivot, is equipped with the third driving motor 822 of fixing on base 1 along slide 821 direction of motion, is connected the hold-in range between third driving motor 822 and the second pivot, and the gliding piece passes through splint and hold-in range fixed connection. Third driving motor 822 can drive the sliding block through the hold-in range and move along with the hold-in range, and the sliding block drives reagent strip bracket 8 along slide 821 linear motion to realize that every time reagent strip bracket 8 moves corresponding distance, all can have the notes liquid hole on a reagent strip 81 corresponding with liquid feeding head 64, realize annotating the precision of liquid.

The first driving motor 21, the second driving motor 721, the third driving motor 822, the first motor 44 and the second motor 54 are all electrically connected with a PLC for coordinated movement, and the PLC automatically coordinates and controls the forward and reverse rotation, the operation time and the operation speed of the motors, so as to ensure the accuracy of the relative positions of the liquid adding pump 6, the sample tube and the reagent strip.

As shown in fig. 2, the priming pump 6 is prevented from being separated from the housing groove 311 during the blood sampling process, and the housing groove 311 is horizontally provided with a stopper lock pin 3112.

In order to reduce the volume of the device, reduce the manufacturing cost and facilitate the maintenance, the other end of the first lead screw 45 and the other end of the second lead screw 55 are both free ends.

As shown in fig. 5 and 6, to facilitate the aspiration and injection and to make the sampling of blood accurate, the tip head 83 is fitted into the lower end of the liquid adding head 64, and in order to prevent cross infection, the tip head 83 is disposable, and the tip head 83 supported on the support block 31 is separated by the tip head removing mechanism 9.

The tip removing head mechanism 9 comprises a push plate 91 arranged on the liquid adding head 64 in a sleeved mode under the bearing block 31, a separation sleeve 92 arranged on the liquid adding head 64 is fixedly connected to the lower portion of the push plate 91 in a connected mode, a vertical through guide hole is formed in the bearing block 31, the guide hole is symmetrically arranged on two sides of the accommodating groove 311, a guide rod 93 is arranged in the guide hole in a penetrating mode, the lower end of the guide rod 93 is fixedly connected with the push plate 91, the upper end of the guide rod 93 is fixedly connected with a stop 931, and a separation spring 94 is arranged on the guide rod 93 between the stop 931 and.

The working process of removing the tip head is as follows: when the second motor 54 drives the second lead screw 55 to rotate and drives the second supporting plate 53 to move downwards, the lifting plate 32 fixedly connected with the second supporting plate 53 also moves downwards, when the lifting plate 32 moves downwards and presses the guide rod 93, the guide rod 93 drives the push plate 91 and the separation sleeve 92 to integrally move downwards, the lower end of the separation sleeve 92 is pressed with the upper end of the tip head 83, and finally the tip head 83 is pushed out of the liquid adding head 64, so that the purpose of removing the tip head 83 is achieved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An automatic blood sampling device is characterized by comprising a base (1), wherein a pair of vertical supports (11) is fixedly connected to the base (1), a horizontal bracket (12) is fixedly connected to the supports (11), a linear sliding groove is formed in the bracket (12) along the length direction, a sliding plate (121) is slidably connected to the sliding groove, a horizontal driving mechanism (2) for driving the sliding plate (121) to do linear motion along the sliding groove is arranged on the bracket (12), and the sliding plate (121) is connected with a bearing mechanism (3) for bearing a liquid adding pump (6), an up-and-down driving mechanism (4) for driving the bearing mechanism (3) to move up and down and a liquid sucking and injecting mechanism (5) for sucking liquid or injecting liquid by the liquid adding pump (6);

the up-down driving mechanism (4) comprises a first mounting frame (41) which is fixed on the sliding plate (121) and is vertically arranged, a vertical first sliding rail (42) is arranged on the first mounting frame (41), a first sliding block is connected on the first sliding rail (42) in a sliding manner, the first sliding block is fixedly connected with a first supporting plate (43), the upper end of the first mounting frame (41) is fixedly connected with a first motor (44), the output end of the first motor (44) is connected with a vertically downward first lead screw (45), and the first supporting plate (43) is fixedly connected with a first lead screw nut (46) matched with the first lead screw (45);

the liquid sucking and injecting mechanism (5) comprises a second mounting frame (51) which is fixedly connected to the first supporting plate (43) and is vertically arranged, a vertical second sliding rail (52) is arranged on the second mounting frame (51), a second sliding block is slidably connected to the second sliding rail (52), the second sliding block is fixedly connected to a second supporting plate (53), a second motor (54) is fixedly connected to the upper end of the second mounting frame (51), the output end of the second motor (54) is connected with a vertically downward second lead screw (55), and the second supporting plate (53) is fixedly connected to a second lead screw nut (56) which is matched with the second lead screw (55);

the bearing mechanism (3) comprises a lifting plate (32) and a bearing block (31), the lifting plate (32) is fixed on the outer side of the second supporting plate (53), a lifting groove (3211) with an outward opening is formed in the lifting plate (32), the bearing block (31) is arranged below the lifting plate (32), the bearing block (31) is fixedly connected to the second mounting frame (51), a vertical accommodating groove (311) coaxial with the lifting groove (3211) is formed in the bearing block (31), an expanded diameter accommodating cavity (3111) is formed in the middle of the accommodating groove (311), the liquid adding pump (6) comprises a liquid adding pipe (61), a push rod (62), a push handle (63) and a liquid adding head (64), the push rod (62) and the push handle (63) are sequentially connected above the liquid adding pipe (61), the liquid adding head (64) is connected below the liquid adding pipe (61), and a limiting block (65) is fixedly connected to the lower portion of the liquid adding pipe (61), the liquid adding pipe (61) is embedded in the accommodating groove (311), the limiting block (65) abuts against the lower side of the accommodating cavity (3111), a pressure spring (66) is sleeved on the liquid adding pipe (61) above the limiting block (65), the upper end of the pressure spring (66) abuts against the upper end of the accommodating cavity (3111), and a push handle (63) of the liquid adding pump (6) is erected at the upper end of the lifting groove (3211);

the base (1) is also provided with a sample tube tray (7) and a reagent strip bracket (8), the sample tube tray (7) is provided with a sample tube (71), and the sample tube tray is provided with a rotating mechanism (72) for driving the sample tube tray to rotate; a reagent strip (81) is arranged on the reagent strip bracket (8), a sliding mechanism (82) for driving the reagent strip bracket (8) to move on the base (1) is arranged on the reagent strip bracket (8), and a tip head (83) is further arranged on the reagent strip (81);

the first motor (44) and the second motor (54) are electrically connected to a PLC that coordinates movement of the two.

2. The automatic blood sampling device of claim 1, wherein the horizontal driving mechanism (2) comprises a first driving motor (21) fixed at one end of the bracket (12), the other end of the bracket (12) is fixedly connected with a synchronous pulley assembly (22), a synchronous belt is connected between an output shaft of the first driving motor (21) and the synchronous pulley assembly (22), the sliding plate (121) is fixedly connected with the synchronous belt, the sliding plate (121) can move linearly along the sliding chute along with the synchronous belt, and the first driving motor (21) is electrically connected with the PLC.

3. The automatic blood sampling device according to claim 1, wherein the rotating mechanism (72) comprises a bearing seat fixed on the base (1), the bearing seat is rotatably connected with a vertical first rotating shaft, the upper end of the first rotating shaft is fixedly connected with the bottom surface of the sample tube tray, the base (1) is fixedly connected with a second driving motor (721), the second driving motor (721) is connected with the first rotating shaft through a synchronous belt, and the second driving motor (721) is electrically connected with the PLC.

4. The automatic blood sampling device of claim 1, wherein the sliding mechanism (82) comprises a slide way (821) fixed on the base (1), a sliding block matched with the slide way (821) is fixedly connected below the reagent strip bracket (8), a second rotating shaft is rotatably connected below the reagent strip bracket (8), a third driving motor (822) fixed on the base (1) is arranged along the moving direction of the slide way (821), a synchronous belt is connected between the third driving motor (822) and the second rotating shaft, the sliding block is fixedly connected with the synchronous belt, and the third driving motor (822) is electrically connected with the PLC.

5. The automatic blood sampling device according to claim 1, wherein a stopper latch (3112) for preventing the charge pump from being detached is horizontally provided through the receiving groove (311).

6. The automatic blood sampling device according to claim 1, wherein the other end of the first lead screw (45) and the other end of the second lead screw (55) are free ends.

7. The automatic blood sampling device of claim 1, wherein the tip head (83) is nested at the lower end of the liquid adding head (64), and the tip head removing mechanism (9) which separates the tip head (83) from the liquid adding pump (6) is further arranged on the bearing block (31).

8. The automatic blood sampling device according to claim 7, wherein the tip removing mechanism (9) comprises a push plate (91) which is sleeved on the liquid adding head (64) at the lower end of the bearing block (31), a separation sleeve (92) which is fixedly connected with the liquid adding head (64) below the push plate (91) is connected with the connecting sleeve, a vertical through guide hole is arranged on the bearing block (31), the guide hole is symmetrically arranged at two sides of the accommodating groove (311), a guide rod (93) is arranged in the guide hole in a penetrating manner, the lower end of the guide rod (93) is fixedly connected with the push plate (91), a stop block (931) is fixedly connected with the upper end of the guide rod (93), and a separation spring (94) is sleeved on the guide rod (93) between the stop block (931) and the bearing block (31).