CN214278208U

CN214278208U - Sample transport mechanism that awaits measuring of blood test machine

Info

Publication number: CN214278208U
Application number: CN202120054008.1U
Authority: CN
Inventors: 梁启明
Original assignee: Xd Precision Machinery Dongguan Co ltd
Current assignee: Xd Precision Machinery Dongguan Co ltd
Priority date: 2021-01-10
Filing date: 2021-01-10
Publication date: 2021-09-24
Anticipated expiration: 2031-01-10

Abstract

The utility model relates to a sample transport mechanism that awaits measuring of blood test machine, including the sample guide block, be provided with sample location slider on the sample guide block, sample location slider is driven by actuating mechanism and can be followed the removal of sample guide block, be provided with the sample reference column on the sample location slider, the top system of sample reference column has the survey cup constant head tank. Compared with the prior art, the utility model discloses realize surveying the automatic movement of cup between check-out set and sample treatment facility with actuating mechanism and sample guide block cooperation, guarantee extracting device and move the material device and all can press from both sides and get and survey the cup, also guaranteed to survey the safety and the translation rate of cup removal in-process, improved blood test's efficiency greatly.

Description

Sample transport mechanism that awaits measuring of blood test machine

Technical Field

The utility model relates to a sample transport mechanism that awaits measuring of blood test machine belongs to medical instrument technical field.

Background

The basic steps of blood test are: 1. collecting a specimen, and extracting venous blood of a patient by a clinical nurse; 2. conveying the specimen, and immediately conveying the specimen to a clinical laboratory after blood sampling; 3. receiving and processing a specimen, and adding a reagent required by the test into the specimen by a clinical laboratory; 4. and (5) testing and preserving the specimen on a machine. Check out test set in the inspection process of operating the computer usually with survey the cup cooperation, survey the cup and cover after through check out test set, operating personnel will handle the sample after good and place in surveying the cup, will survey the cup again and remove and carry out the inspection to check out on the test set, that is to say survey the cup and need remove several times between check out test set and sample processing equipment, and survey the cup less, operating personnel removes more difficultly, waste time. The automatic material taking device and the material moving device appear in the prior art, the material taking device clamps and measures the cup and move between the sample processing equipment, the material moving device clamps and measures the cup and move between the inspection equipment, but a certain distance exists between the material taking device and the material moving device, the material taking device and the material moving device can not directly transport and measure the cup, the transfer of the measuring cup between the material taking device and the material moving device still needs manual participation, and the operation is very troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the shortcoming of prior art, provide a sample transport mechanism that awaits measuring that is used for fixing a position and removes the blood test machine of surveying the cup.

For realizing the purpose the utility model adopts the technical proposal that:

the sample transfer mechanism to be tested of the blood testing machine comprises a sample guide block, wherein a sample positioning sliding block is arranged on the sample guide block, the sample positioning sliding block is driven by a driving mechanism and can move along the sample guide block, a sample positioning column is arranged on the sample positioning sliding block, and a measuring cup positioning groove is formed in the top of the sample positioning column.

As a further optimization of the above technical solution: the top of the specimen positioning column is provided with a matching lug, and the measuring cup positioning groove is positioned on the matching lug.

As a further optimization of the above technical solution: and a specimen positioning column mounting plate is fixed on the specimen positioning sliding block, and the specimen positioning column is fixed on the specimen positioning column mounting plate.

As a further optimization of the above technical solution: the driving mechanism is any one of an oil cylinder, an air cylinder, a lead screw transmission mechanism, a synchronous wheel transmission mechanism, a chain transmission mechanism or a composite transmission mechanism.

As a further optimization of the above technical solution: the specimen positioning slide block is fixedly provided with a first induction rod, and the first induction rod is connected with the first nut; the sample guide block is internally provided with a first cavity for mounting the screw rod transmission mechanism, a first screw rod is positioned in the first cavity, the first motor is mounted on the sample guide block or a frame of a blood testing machine, the sample guide block is provided with a first sliding hole, the first sliding hole is communicated with the first cavity, and the first induction rod penetrates through the first sliding hole and is connected with the first nut.

As a further optimization of the above technical solution: the synchronous wheel transmission mechanism comprises a second motor, a first transmission shaft and a second transmission shaft, the first transmission shaft is connected with a rotating shaft of the second motor, the arrangement directions of the first transmission shaft and the second transmission shaft are the same, the second transmission shaft and the first transmission shaft are arranged in parallel, first synchronous wheels are arranged on the first transmission shaft and the second transmission shaft, a first belt is sleeved between the two first synchronous wheels, a first connecting block is fixed on the first belt, a second induction rod is fixed on the specimen positioning sliding block, and the second induction rod is connected with the first connecting block; the blood test device comprises a specimen guide block, a synchronizing wheel transmission mechanism, a first transmission shaft, a second motor, a second transmission shaft, a second sliding hole and a second induction rod, wherein the specimen transmission block is installed at one end of the specimen guide block, the synchronizing wheel transmission mechanism is installed in the specimen transmission block and the specimen guide block, the first transmission shaft is arranged in the specimen transmission block, the second motor is installed on the specimen transmission block and is perpendicular to the specimen guide block or installed on a rack of a blood test machine, a second cavity is formed in the specimen guide block, the second transmission shaft is located at one end, away from the specimen transmission block, of the second cavity, the second sliding hole is further formed in the specimen guide block and is communicated with the second cavity, and the second induction rod penetrates through the second sliding hole and is connected with the.

As a further optimization of the above technical solution: the chain transmission mechanism comprises a third motor, a first gear and a second gear, a gear shaft of the first gear is connected with a rotating shaft of the third motor, the arrangement directions of the gear shaft of the first gear and the rotating shaft of the third motor are the same, a gear shaft of the second gear is arranged in parallel with the gear shaft of the first gear, a chain is sleeved between a gear disc of the first gear and a gear disc of the second gear, a second connecting block is fixed on the chain, a third induction rod is fixed on the specimen positioning sliding block, and the third induction rod is connected with the second connecting block; the blood test device comprises a specimen guide block, a chain transmission mechanism, a first gear, a third motor, a third cavity, a third gear, a third sliding hole, a third induction rod and a second connecting block, wherein the specimen transmission block is installed at one end of the specimen guide block, the chain transmission mechanism is installed in the specimen transmission block and the specimen guide block, the first gear is arranged in the specimen transmission block, the third motor is installed on the specimen transmission block and is perpendicular to the specimen guide block or installed on a rack of a blood test machine, the third cavity is formed in the specimen guide block, the second gear is located at one end, far away from the specimen transmission block, of the third cavity, the third sliding hole is further formed in the specimen guide block and is communicated with the third cavity, and the third induction rod penetrates through the third sliding hole and is connected with the second connecting block.

As a further optimization of the above technical solution: the composite transmission mechanism comprises a fourth motor, a second screw rod, a third transmission shaft and a fourth transmission shaft, the second screw rod comprises a second screw rod and a second nut in threaded fit with the second screw rod, the third transmission shaft is connected with a rotating shaft in the fourth motor, the fourth transmission shaft is connected with the second screw rod, second synchronizing wheels are arranged on the third transmission shaft and the fourth transmission shaft, a second belt is sleeved between the two second synchronizing wheels, a fourth induction rod is fixed on the specimen positioning slide block, and the fourth induction rod is connected with the second nut; the specimen guide block is provided with a specimen transmission block, the composite transmission mechanism is arranged in the specimen transmission block and the specimen guide block, a third transmission shaft and a fourth transmission shaft are positioned in the specimen transmission block, a fourth cavity is formed in the specimen guide block, the second lead screw is positioned in the fourth cavity, the fourth motor is arranged on the specimen transmission block and is arranged in parallel with the specimen guide block or is arranged on a frame of a blood testing machine, a fourth sliding hole is formed in the specimen guide block and is communicated with the fourth cavity, and the fourth induction rod penetrates through the fourth sliding hole and is connected with the second nut.

As a further optimization of the above technical solution: install first spacing sensor, initial point sensor and the spacing sensor of second on the sample guide block, first spacing sensor, the spacing sensor of second are fixed respectively the both ends of sample guide block side, initial point sensor is located between first spacing sensor and the spacing sensor of second.

Compared with the prior art, the utility model discloses realize surveying the automatic movement of cup between check-out set and sample treatment facility with actuating mechanism and sample guide block cooperation, guarantee extracting device and move the material device and all can press from both sides and get and survey the cup, also guaranteed to survey the safety and the translation rate of cup removal in-process, improved blood test's efficiency greatly.

Drawings

Fig. 1 is a schematic perspective view of a blood testing machine according to the present invention.

Fig. 2 is a schematic perspective view of the front frame and devices on the front frame in the blood testing machine of the present invention.

Fig. 3 is a schematic perspective view of the dispensing device of the blood testing machine of the present invention.

Fig. 4 is a schematic perspective view of the present invention.

Fig. 5 is a schematic view of the internal structure of the middle synchronizing wheel transmission mechanism of the present invention.

Fig. 6 is a schematic view of the internal structure of the compound transmission mechanism of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description. As shown in fig. 1-6, the blood testing machine of the present invention comprises a feeding device 1, a material taking device 2, a batching device 3 and a material moving device 4 and a testing device 5 on a rear frame 8, which are sequentially arranged from front to back on a front frame 6. After the blood sample is collected, heparin tube and other materials are put into in the loading attachment 1, after the loading attachment 1 material loading, 2 clamps of extracting device are got heparin tube and other materials on the loading attachment 1 move to set for the position in the dosing unit 3, blood in the heparin tube warp dosing unit 3 sample and add the sample that the test needs and form the sample that awaits measuring, move material device 4 with the sample that awaits measuring and move to carry out the blood test in the verifying attachment 5.

In the above technical scheme: as shown in fig. 3, the batching device 3 includes a screw-capping mechanism 31, a turning mechanism 32, a standing mechanism 33, a cover-pulling code-scanning mechanism 34, a suction head positioning mechanism 35, a to-be-measured sample transferring mechanism 36, a reagent bottle positioning mechanism 37, and a reagent feeding mechanism 38, and the batching device 3 is fixed on the front frame 6 through a batching plate 301 at the bottom. The cover screwing mechanism 31 is responsible for opening and closing the cover of the reagent tube; the turnover mechanism 32 is responsible for turning over the blood sampling tube or the reagent tube; the standing mechanism 33 is responsible for standing the blood sampling tube and the reagent tube; the cover-pulling code-scanning mechanism 34 is responsible for scanning bar codes on the blood collection tubes and opening and closing covers of the blood collection tubes; the sucker positioning mechanism 35 is responsible for moving the sucker; the reagent bottle positioning mechanism 37 is used for placing glass bottles P1, P2 and P3 containing various reagents required by blood tests; the reagent supply mechanism 38 is adapted to receive vials containing other reagents required for blood testing, such as CaCl₂And (3) a reagent.

In the above technical scheme: the specimen transfer mechanism 36 to be tested is responsible for moving the measuring cup 7, as shown in fig. 4, the specimen transfer mechanism 36 to be tested includes a specimen guide block 362 horizontally fixed at the bottom of the batching plate 301, a specimen positioning slide block 363 is arranged at the bottom of the specimen guide block 362, and the specimen positioning slide block 363 is driven by the driving mechanism and can move along the specimen guide block 362. The driving mechanism is a synchronizing wheel transmission mechanism, as shown in fig. 5, the synchronizing wheel transmission mechanism includes a second motor, a first transmission shaft 01 and a second transmission shaft 02, the first transmission shaft 01 is connected with a rotating shaft of the second motor, the setting directions of the first transmission shaft 01 and the second transmission shaft are the same, the second transmission shaft 02 and the first transmission shaft 01 are arranged in parallel, first synchronizing wheels are arranged on the first transmission shaft 01 and the second transmission shaft 02, and a first belt 03 is sleeved between the two first synchronizing wheels. First connecting block 04 is fixed on first belt 03, and the second response pole is fixed on sample location slider 363, and the second response pole is connected with first connecting block 04. A specimen transmission block 366 is installed at one end of the specimen guide block 362, a synchronizing wheel transmission mechanism is installed in the specimen transmission block 366 and the specimen guide block 362, a first transmission shaft 01 is arranged in the specimen transmission block 366, a second motor is installed on the specimen transmission block 366 or a rack of a blood testing machine, and the second motor is a specimen motor 361. In this embodiment, the second motor is mounted on the specimen transmission block 366, so that the vibration influence of other parts of the blood testing machine on the second motor during operation is reduced; meanwhile, the second motor and other parts of the specimen transfer mechanism 36 to be tested are combined to form an independent module, so that the assembly and disassembly are convenient. The specimen transmission block 366 enables the second motor to be perpendicular to the specimen guide block 362, so that the transverse size can be reduced, the vacant space of the vertical height can be effectively utilized, and the occupied space of the whole machine can be reduced. The specimen guide block 362 has a second cavity formed therein, and the second drive shaft 02 is located at an end of the second cavity remote from the specimen drive block 366. Still system has the second slide opening in the sample guide block 362, and second slide opening and second cavity intercommunication, second response pole pass the second slide opening and be connected with first connecting block 04. Synchronizing wheel drive mechanism passes through second motor drive, and small in noise, the second motor realizes flexible transmission with first transmission shaft 01, second transmission shaft 02, the cooperation of first belt 03, and is safer. Install first spacing sensor, origin sensor and the spacing sensor of second on the sample guide block 362, first spacing sensor, the spacing sensor of second are fixed respectively at the both ends of a sample guide block 362 side, and origin sensor is located between the spacing sensor of first spacing sensor and second. The first limit sensor, the origin sensor and the second limit sensor are used for sensing the second sensing rod. The second motor drives the second induction rod to move to be matched with the original point sensor, and when the original point sensor senses the second induction rod, the second motor resets to the original point. Then the second motor continues to drive the specimen positioning slide block 363 and the second induction rod to move; in the process, when the first limiting sensor senses the second induction rod, the second motor stops moving; when the second limit sensor senses the second sensing rod, the second motor stops moving, so that the first limit sensor and the second limit sensor limit the movement of the specimen positioning slide block 363.

As an alternative to the above-mentioned synchronous wheel transmission mechanism, the driving mechanism may also be any one of an oil cylinder, an air cylinder, a lead screw transmission mechanism, a chain transmission mechanism or a compound transmission mechanism.

When being replaced by the hydro-cylinder or the cylinder, the hydro-cylinder or the cylinder is installed on the frame of the sample guide block 362 or the blood testing machine, the hydro-cylinder directly or indirectly drives the sample positioning slide block 363 to move, when the scheme is adopted, an original point sensor is not needed, and only the sample positioning slide block 363 is required to be provided with a sensing object matched with the first and second limit sensors. The advantage of this scheme is that the drive connection is simple in construction.

When replaced by the screw rod transmission mechanism, the screw rod transmission mechanism comprises a first screw rod and a first motor, the screw rod has the function of converting rotary motion into linear motion, the first screw rod comprises a first screw rod and a first nut in threaded fit with the first screw rod, and the first screw rod is connected with a rotating shaft of the first motor through a coupler. A first induction rod is fixed on the specimen positioning slide block 363 and connected with a first nut. A first cavity for installing a screw transmission mechanism is formed in the specimen guide block 362, wherein the first screw is located in the first cavity. The first motor is mounted on the specimen guide 362 or the frame of the blood testing machine, and the first motor is a specimen motor 361. In this embodiment, the first motor is mounted on the specimen guide block 362, so that the vibration influence of other parts of the blood testing machine on the first motor during operation is reduced; meanwhile, the first motor and other parts of the screw rod transmission mechanism are combined to form an independent module, so that the screw rod transmission mechanism is convenient to mount and dismount. The specimen guide block 362 is provided with a first sliding hole, the first sliding hole is communicated with the first cavity, and the first induction rod penetrates through the first sliding hole and is connected with the first nut. The screw rod transmission mechanism has the same advantages as the synchronous wheel transmission mechanism, is driven by a motor, and has low noise; compared with a synchronous wheel transmission mechanism, the synchronous wheel transmission mechanism has the advantages that the structure is simple, the first screw rod is matched with the first motor to realize rigid transmission, and the transmission is timely and rapid.

When the chain transmission mechanism is used for replacing the chain transmission mechanism, the chain transmission mechanism comprises a third motor, a first gear and a second gear, a gear shaft of the first gear is connected with a rotating shaft of the third motor, the arrangement directions of the gear shaft and the rotating shaft of the third motor are the same, and a gear shaft of the second gear is arranged in parallel with a gear shaft of the first gear. A chain is sleeved between the gear wheel disc of the first gear and the gear wheel disc of the second gear, a fourth connecting block is fixed on the chain, a third induction rod is fixed on the specimen positioning sliding block 363, and the third induction rod is connected with the fourth connecting block. A specimen transmission block 366 is installed at one end of the specimen guide block 362, a chain transmission mechanism is installed in the specimen transmission block 366 and the specimen guide block 362, a first gear is arranged in the specimen transmission block 366, a third motor is installed on the specimen transmission block 366 or a rack of a blood testing machine, and the third motor is a specimen motor 361. In this embodiment, the third motor is mounted on the specimen transmission block 366 and is perpendicular to the specimen guide block 362, so that the influence of vibration of other parts of the blood testing machine on the third motor during operation is reduced; meanwhile, the third motor and other parts of the chain transmission mechanism are combined to form an independent module, so that the assembly and disassembly are convenient. A third cavity is formed in the specimen guide block 362, and a second gear is located at an end of the third cavity remote from the specimen drive block 366. A third sliding hole is further formed in the specimen guide block 362 and communicated with the third cavity, and a third induction rod penetrates through the third sliding hole and is connected with a fourth connecting block. The chain transmission mechanism has the same advantages as the synchronous wheel transmission mechanism, is driven by a motor, has low noise and flexible transmission, is safer, and can reduce the transverse size, effectively utilize the vacant space of the vertical height and further reduce the occupied space of the whole machine by enabling a third motor to be arranged perpendicular to the specimen guide block 362 through the specimen transmission block 366; compared with a synchronous wheel transmission mechanism, the chain has the advantage that the chain is not easy to wear.

When replaced by a compound transmission, as shown in fig. 6, the compound transmission includes a fourth motor, a second lead screw, a third transmission shaft 93, and a fourth transmission shaft 94, the lead screw functioning to convert rotational motion into linear motion. The second lead screw includes second screw 91 and with second screw 91 screw-thread fit's second nut 92, third transmission shaft 93 is connected with the pivot in the fourth motor, fourth transmission shaft 94 is connected with second screw 91, the cover is equipped with second belt 95 between third transmission shaft 93 and the fourth transmission shaft 94. A fourth induction rod 96 is fixed on the specimen positioning slide block 363, and the fourth induction rod 96 is connected with the second nut 92. The specimen guide block 362 is provided with a specimen transmission block 366, the composite transmission mechanism is arranged in the specimen transmission block 366 and the specimen guide block 362, wherein the third transmission shaft 93 and the fourth transmission shaft 94 are positioned in the specimen transmission block 366, a fourth cavity is arranged in the specimen guide block 362, and the second lead screw is positioned in the fourth cavity. The fourth motor is mounted on the specimen drive block 366 or the frame of the blood testing machine, and the fourth motor is the specimen motor 361. In this embodiment, the fourth motor is mounted on the specimen transmission block 366 and is arranged parallel to the specimen guide block 362, so that the influence of vibration of other parts of the blood testing machine on the fourth motor during operation is reduced; meanwhile, the fourth motor and other parts of the composite transmission mechanism are combined to form an independent module, so that the assembly and disassembly are convenient. The specimen guide block 362 is provided with a fourth sliding hole, the fourth sliding hole is communicated with the fourth cavity, and the fourth induction rod 96 passes through the fourth sliding hole and is connected with the second nut 92. The fourth motor is started, a rotating shaft of the fourth motor drives the second screw 91 to rotate through the third transmission shaft 93, the second belt 95 and the fourth transmission shaft 94, the second screw 91 drives the second nut 92 to axially move along the second screw 91, and the second nut 92 drives the specimen positioning slide block 363 and the fourth induction rod 96 to move along the specimen guide block 362. The composite transmission mechanism has the same advantages as the synchronous wheel transmission mechanism, is driven by a motor and has low noise; and compare with synchronizing wheel drive mechanism, the advantage makes the fourth motor be on a parallel with sample guide block 362 setting through sample guide block 362, can reduce horizontal size, effectively utilizes the vacant space of vertical height, and then can reduce the occupation space of complete machine.

In the above technical scheme: the bottom of sample location slider 363 is fixed with sample reference column mounting panel 364, is fixed with sample reference column 365 on the sample reference column mounting panel 364, and the system has the location bar hole on the cooperation board 301, and the top of sample reference column 365 passes the location bar hole and the system has cooperation lug 3651, and the system has the survey cup constant head tank that is used for placing survey cup 7 on the cooperation lug 3651. Because the detection needs, survey cup 7 and need move several times between dosing unit 3 and verifying attachment 5, nevertheless there is certain distance between extracting device 2 and the material device 4 that moves, and both can not directly transport and survey cup 7, therefore set up the sample transport mechanism 36 that awaits measuring and be responsible for surveying the transfer of cup 7. The two ends of the specimen guide block 362 are respectively a testing end and a sample adding end, and the specimen positioning column 365 and the sample measuring cup 7 are driven by the driving mechanism to move between the testing end and the sample adding end. When the sample positioning column 365 moves to the sample adding end, the sample cup 7 thereon is clamped by the material taking device 2; when the specimen positioning post 365 moves to the testing end, the measuring cup 7 thereon is clamped by the material moving device 4, and the distance between the material moving device 4 and the measuring cup 7 is shortened by the matching convex block 3651, so that the phenomenon that the material moving device 4 cannot clamp the measuring cup 7 is avoided.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, all should fall into the protection scope of the utility model, the technical scheme that the design of this technical field technical personnel according to the utility model can be obtained through logic analysis, reasoning or limited experiment on prior art's basis, all should fall into.

Claims

1. The specimen transfer mechanism to be tested of the blood testing machine is characterized by comprising a specimen guide block (362), wherein a specimen positioning slide block (363) is arranged on the specimen guide block (362), the specimen positioning slide block (363) is driven by a driving mechanism and can move along the specimen guide block (362), a specimen positioning column (365) is arranged on the specimen positioning slide block (363), and a testing cup positioning groove is formed in the top of the specimen positioning column (365).

2. The specimen transportation mechanism of a blood testing machine according to claim 1, wherein a fitting protrusion (3651) is formed at a top of the specimen positioning post (365), and the cup positioning groove is located on the fitting protrusion (3651).

3. The mechanism of claim 1, wherein a specimen positioning post mounting plate (364) is fixed to the specimen positioning slider (363), and the specimen positioning post (365) is fixed to the specimen positioning post mounting plate (364).

4. The specimen transportation mechanism of blood testing machine according to claim 1, wherein said driving mechanism is any one of oil cylinder, air cylinder, screw rod transmission mechanism, synchronous wheel transmission mechanism, chain transmission mechanism or composite transmission mechanism;

the screw rod transmission mechanism comprises a first screw rod and a first motor, the first screw rod comprises a first screw rod and a first nut in threaded fit with the first screw rod, the first screw rod is connected with a rotating shaft of the first motor through a coupler, a first induction rod is fixed on the specimen positioning sliding block (363), and the first induction rod is connected with the first nut; a first cavity for installing the screw rod transmission mechanism is formed in the specimen guide block (362), a first screw rod is located in the first cavity, the first motor is installed on the specimen guide block (362) or a frame of a blood testing machine, a first sliding hole is formed in the specimen guide block (362), the first sliding hole is communicated with the first cavity, and the first induction rod penetrates through the first sliding hole and is connected with the first nut;

the synchronous wheel transmission mechanism comprises a second motor, a first transmission shaft (01) and a second transmission shaft (02), the first transmission shaft (01) is connected with a rotating shaft of the second motor, the arrangement directions of the first transmission shaft and the second transmission shaft are the same, the second transmission shaft (02) is parallel to the first transmission shaft (01), the first transmission shaft (01) and the second transmission shaft (02) are both provided with first synchronous wheels, a first belt (03) is sleeved between the two first synchronous wheels, a first connecting block (04) is fixed on the first belt (03), a second induction rod is fixed on the specimen positioning sliding block (363), and the second induction rod is connected with the first connecting block (04); a specimen transmission block (366) is installed at one end of the specimen guide block (362), the synchronous wheel transmission mechanism is installed in the specimen transmission block (366) and the specimen guide block (362), wherein a first transmission shaft (01) is arranged in the specimen transmission block (366), the second motor is installed on the specimen transmission block (366) and is arranged perpendicular to the specimen guide block (362) or is installed on a frame of a blood testing machine, a second cavity is formed in the specimen guide block (362), the second transmission shaft (02) is positioned at one end of the second cavity far away from the specimen transmission block (366), a second sliding hole is also formed in the specimen guide block (362), the second sliding hole is communicated with the second cavity, the second induction rod penetrates through the second sliding hole and is connected with the first connecting block (04);

the chain transmission mechanism comprises a third motor, a first gear and a second gear, a gear shaft of the first gear is connected with a rotating shaft of the third motor, the arrangement directions of the gear shaft of the first gear and the rotating shaft of the third motor are the same, a gear shaft of the second gear is arranged in parallel with the gear shaft of the first gear, a chain is sleeved between a gear wheel disc of the first gear and a gear wheel disc of the second gear, a second connecting block is fixed on the chain, a third induction rod is fixed on the specimen positioning sliding block (363), and the third induction rod is connected with the second connecting block; a specimen transmission block (366) is installed at one end of the specimen guide block (362), the chain transmission mechanism is installed in the specimen transmission block (366) and the specimen guide block (362), wherein a first gear is arranged in the specimen transmission block (366), the third motor is installed on the specimen transmission block (366) and is arranged perpendicular to the specimen guide block (362) or is installed on a frame of a blood testing machine, a third cavity is formed in the specimen guide block (362), the second gear is located at one end of the third cavity far away from the specimen transmission block (366), a third sliding hole is further formed in the specimen guide block (362), the third sliding hole is communicated with the third cavity, and the third induction rod passes through the third sliding hole and is connected with the second connecting block;

the composite transmission mechanism comprises a fourth motor, a second screw rod, a third transmission shaft (93) and a fourth transmission shaft (94), the second screw rod comprises a second screw rod (91) and a second nut (92) in threaded fit with the second screw rod (91), the third transmission shaft (93) is connected with a rotating shaft in the fourth motor, the fourth transmission shaft (94) is connected with the second screw rod (91), second synchronizing wheels are arranged on the third transmission shaft (93) and the fourth transmission shaft (94), a second belt (95) is sleeved between the second synchronizing wheels, a fourth induction rod (96) is fixed on the specimen positioning slide block (363), and the fourth induction rod (96) is connected with the second nut (92); the specimen guide block (362) is provided with a specimen transmission block (366), the composite transmission mechanism is installed in the specimen transmission block (366) and the specimen guide block (362), a third transmission shaft (93) and a fourth transmission shaft (94) are located in the specimen transmission block (366), a fourth cavity is formed in the specimen guide block (362), the second lead screw is located in the fourth cavity, the fourth motor is installed on the specimen transmission block (366) and is arranged in parallel to the specimen guide block (362) or is installed on a rack of a blood testing machine, a fourth sliding hole is formed in the specimen guide block (362), the fourth sliding hole is communicated with the fourth cavity, and the fourth induction rod (96) penetrates through the fourth sliding hole and is connected with the second nut (92).

5. The mechanism of any one of claims 1 to 4, wherein the specimen guide block (362) has a first limit sensor, a home sensor, and a second limit sensor mounted thereon, the first limit sensor and the second limit sensor being fixed to opposite ends of a side surface of the specimen guide block (362), respectively, and the home sensor being located between the first limit sensor and the second limit sensor.