Blood testing machine capping mechanism

Abstract

The present invention relates to a capping mechanism for a blood testing machine, comprising a capping back plate, a batching rotating mechanism provided on the capping back plate, a first electric clamp for clamping a reagent tube cap connected to the bottom of the batching rotating mechanism, a height adjustment device provided on the capping back plate, and a second electric clamp for clamping a reagent tube body. Compared with the prior art, the present invention drives the tube cap of the reagent tube to rotate by the batching rotating mechanism. During this process, the height adjustment device drives the tube body of the reagent tube to move downward, while the tube cap is retained in the reagent tube cap clamping fingers, thereby achieving separation of the tube cap and the tube body of the reagent tube; after the reagent is added, the height adjustment device drives the tube body of the reagent tube to move upward, and the tube cap of the reagent tube rotates in the opposite direction, thereby achieving the closing of the reagent tube cap, ensuring the speed of opening and closing the reagent tube cap, and greatly improving the efficiency of blood testing.

Description

Technical Field

[0001] The invention relates to a cover screwing mechanism of a blood testing machine, belonging to the technical field of medical equipment. Background Art

[0002] The basic steps of a blood test are: 1. Specimen collection: A clinical nurse draws venous blood from the patient; 2. Specimen transportation: After blood collection, the sample is immediately delivered to the clinical laboratory; 3. Specimen reception and processing: The laboratory adds the necessary reagents to the sample; 4. Specimen testing and storage. During specimen processing, the laboratory must add reagents based on each patient's blood test requirements. However, if the reagents remain uncapped, they are easily contaminated. Therefore, testers must frequently open and close the reagent tubes, which is very cumbersome and time-consuming. Summary of the Invention

[0003] The object of the present invention is to provide a cap screwing mechanism for a blood testing machine that realizes automatic opening and closing of reagent tube caps in view of the shortcomings of the prior art.

[0004] To achieve the purpose, the present invention adopts the following technical solutions:

[0005] The capping mechanism of the blood testing machine includes a capping backplate, on which a batching rotating mechanism is provided, the bottom of which is connected to a first electric clamp for clamping the reagent tube cap, a height adjustment device is provided on the capping backplate, and the height adjustment device is connected to a second electric clamp for clamping the reagent tube body, the first electric clamp and the second electric clamp both include a clamping cylinder and a clamping piston rod located on both sides of the clamping cylinder.

[0006] As a further optimization of the above technical solution: reagent tube cover clamping fingers are installed on the clamping piston rods on both sides of the first electric clamp, and reagent tube body clamping fingers are installed on the clamping piston rods on both sides of the second electric clamp, the reagent tube body clamping fingers are located below the reagent tube cover clamping fingers, the reagent tube cover clamping fingers clamp the tube cover of the reagent tube, and the reagent tube body clamping fingers clamp the tube body of the reagent tube, the ingredient rotation mechanism drives the reagent tube cover clamping fingers and the tube cover of the reagent tube to rotate, and the height adjustment device drives the reagent tube body clamping fingers and the tube body of the reagent tube to move up and down.

[0007] As a further optimization of the above technical solution: the bottom of the two reagent tube cover clamping fingers are each formed with a clamping part, the opposite side of the two clamping parts are each formed with the tube cover groove, the groove wall of the tube cover groove is also formed with a plurality of vertically arranged and evenly arranged tube cover strip grooves, the opposite side of the head of the two reagent tube body clamping fingers are each formed with a fixing groove, and an elastomer is arranged in the fixing groove.

[0008] As a further optimization of the above technical solution: the height adjustment device includes a guide slide rail fixed to the front side of the screw cover back plate, a guide slide block is provided on the guide slide rail, and the guide slide block is connected to the second electric clamp.

[0009] As a further optimization of the above technical solution: the height adjustment device also includes a reagent tube guide block fixed on the back side of the screw cap back plate, and a height adjustment slider is provided on the reagent tube guide block. The height adjustment slider is driven by a driving mechanism and can move along the reagent tube guide block.

[0010] As a further optimization of the above technical solution: the bottom of the height adjustment slider is connected with a U-shaped connecting plate, the bottom of the screw cover back plate is formed with two limiting grooves, the opening of the U-shaped connecting plate passes through the limiting grooves and is connected to the guide slider.

[0011] As a further optimization of the above technical solution: a fixed sleeve is installed at the bottom of the height adjustment slider, a compression spring is arranged in the fixed sleeve, one end of the compression spring is fixed in the fixed sleeve, and the other end is connected to an adjusting column, the adjusting column can move up and down in the fixed sleeve, and the U-shaped connecting plate is installed at the bottom of the adjusting column.

[0012] As a further optimization of the above technical solution: a sliding connecting plate is fixed on the guide slider, the U-shaped connecting plate opening is fixed to the bottom of the sliding connecting plate, the second electric clamp is fixed on the sliding connecting plate, and two tension springs are also provided between the sliding connecting plate and the cover screwing back plate, two lower tension spring rods are fixed on the back of the sliding connecting plate, and two upper tension spring rods are fixed on the cover screwing back plate, and the two ends of the tension spring are respectively connected to the upper and lower tension spring rods.

[0013] As a further optimization of the above technical solution: the driving mechanism is any one of an oil cylinder, an air cylinder, a screw transmission mechanism, a synchronous wheel transmission mechanism, a chain transmission mechanism or a composite transmission mechanism.

[0014] As a further optimization of the above technical solution: the screw transmission mechanism includes a first screw and a first motor, the first screw includes a first screw and a first nut threadedly matched with the first screw, the first screw is connected to the rotating shaft of the first motor through a coupling, a first sensing rod is fixed on the height adjustment slider, and the first sensing rod is connected to the first nut; a first cavity for installing the screw transmission mechanism is formed in the reagent tube guide block, wherein the first screw is located in the first cavity, the first motor is installed on the reagent tube guide block or the frame of the blood testing machine, a first sliding hole is formed on the reagent tube guide block, the first sliding hole is connected to the first cavity, and the first sensing rod passes through the first sliding hole and is connected to the first nut.

[0015] As a further optimization of the above technical solution: the synchronous wheel transmission mechanism includes a second motor, a first transmission shaft, and a second transmission shaft, the first transmission shaft being connected to the rotating shaft of the second motor and being arranged in the same direction, the second transmission shaft being arranged parallel to the first transmission shaft, a first synchronous wheel being provided on each of the first and second transmission shafts, a first belt being sleeved between the two first synchronous wheels, a first connecting block being fixed to the first belt, a second sensing rod being fixed to the height adjustment slider, and the second sensing rod being connected to the first connecting block; a reagent tube transmission block being mounted at one end of the reagent tube guide block, the synchronous wheel transmission mechanism being mounted within the reagent tube transmission block and the reagent tube guide block, wherein the first transmission shaft is disposed within the reagent tube transmission block, the second motor being mounted on the reagent tube transmission block and being arranged perpendicular to the reagent tube guide block or mounted on the frame of the blood testing machine, a second cavity being formed within the reagent tube guide block, the second transmission shaft being located at an end of the second cavity away from the reagent tube transmission block, a second sliding hole being further formed within the reagent tube guide block, the second sliding hole being connected to the second cavity, and the second sensing rod passing through the second sliding hole and being connected to the first connecting block.

[0016] As a further optimization of the above technical solution: the chain transmission mechanism includes a third motor, a first gear and a second gear, the gear shaft of the first gear is connected to the rotating shaft of the third motor and the two are set in the same direction, the gear shaft of the second gear is set in parallel with the gear shaft of the first gear, a chain is set between the gear disc of the first gear and the gear disc of the second gear, a second connecting block is fixed on the chain, a third sensing rod is fixed on the height adjustment slider, and the third sensing rod is connected to the second connecting block; a reagent tube transmission block is installed at one end of the reagent tube guide block, The chain transmission mechanism is installed in the reagent tube transmission block and the reagent tube guide block, wherein the first gear is arranged in the reagent tube transmission block, the third motor is installed on the reagent tube transmission block and is arranged perpendicular to the reagent tube guide block or is installed on the frame of the blood testing machine, a third cavity is formed in the reagent tube guide block, the second gear is located at one end of the third cavity away from the reagent tube transmission block, and a third sliding hole is also formed in the reagent tube guide block, the third sliding hole is connected to the third cavity, and the third sensing rod passes through the third sliding hole and is connected to the second connecting block.

[0017] As a further optimization of the above technical solution: the composite transmission mechanism includes a fourth motor, a second screw, a third transmission shaft and a fourth transmission shaft, the second screw includes a second screw and a second nut threadedly matched with the second screw, the third transmission shaft is connected to the rotating shaft in the fourth motor, the fourth transmission shaft is connected to the second screw, the third transmission shaft and the fourth transmission shaft are both provided with a second synchronous wheel, a second belt is sleeved between the two second synchronous wheels, a fourth sensing rod is fixed on the height adjustment slider, and the fourth sensing rod is connected to the second nut; the reagent tube guide block A reagent tube transmission block is installed on it, and the composite transmission mechanism is installed in the reagent tube transmission block and the reagent tube guide block, wherein the third transmission shaft and the fourth transmission shaft are located in the reagent tube transmission block, a fourth cavity is formed in the reagent tube guide block, the second screw rod is located in the fourth cavity, the fourth motor is installed on the reagent tube transmission block and is arranged parallel to the reagent tube guide block or installed on the frame of the blood testing machine, a fourth sliding hole is formed on the reagent tube guide block, the fourth sliding hole is connected to the fourth cavity, and the fourth sensing rod passes through the fourth sliding hole and is connected to the second nut.

[0018] As a further optimization of the above technical solution: a first limit sensor, an origin sensor and a second limit sensor are installed on the reagent tube guide block, the first limit sensor and the second limit sensor are respectively fixed at the two ends of one side of the reagent tube guide block, and the origin sensor is located between the first limit sensor and the second limit sensor.

[0019] As a further optimization of the above technical solution: a reagent tube cap sensor and a reagent tube body sensor are also fixed on the front of the screw-cap back plate, and a tube cap sensing groove is formed on the reagent tube cap clamping finger. The reagent tube cap sensor senses whether a reagent tube cap is clamped in the reagent tube cap clamping finger through the tube cap sensing groove, and the reagent tube body sensor senses whether a reagent tube body is clamped in the reagent tube body clamping finger.

[0020] As a further optimization of the above technical solution: the batching rotation mechanism includes a batching rotation motor, a front synchronous shaft, a rear synchronous shaft, and a motor top plate. A mounting hole is formed at one end of the motor top plate, mounting steps are formed on both sides of the mounting hole, a plurality of bolt holes are formed on the mounting steps, a motor connecting plate is provided in the mounting hole, the batching rotation motor is fixed to the bottom of the motor connecting plate, the rotor of the batching rotation motor passes through the motor connecting plate and is connected to the rear synchronous shaft, mounting parts are formed on both sides of the motor connecting plate, a movable strip hole is formed on the mounting part, the mounting part is located on the mounting step, bolts pass through the movable strip hole and the bolt hole and cooperate with the fixing nut to mount the motor connecting plate on the motor top plate, and the mounting hole is close to A motor top block is also fixed to one side of the middle part of the motor top plate, and a rotating bearing seat is fixed to the other end of the motor top plate. A rotating shaft is installed in the rotating bearing seat, and the rotating shaft is fixed to the front synchronous shaft. The bottom of the rotating shaft passes through the motor top plate and is connected to the first electric clamp. A synchronous belt is sleeved between the front synchronous shaft and the rear synchronous shaft. A batching origin sensor is fixed to the middle part of the motor top plate, and the head of the rotating shaft passes through the front synchronous shaft and is fixed with a batching origin induction sheet that cooperates with the batching origin sensor. An electrical slip ring is also provided on the top of the rotating shaft, and a support sheet is supported by two support rods on the rotating bearing seat. The electrical slip ring is located on the support sheet, and a rotating safety cover is also installed on the motor top plate.

[0021] As a further optimization of the above technical solution: one end face of the clamping electric cylinder is provided with an inwardly concave clamping groove, the groove walls on both sides of the clamping groove are provided with protruding guide slides, a limiting rod is provided in the middle of the guide slide, the bottom of the clamping piston rod is provided with a guide slide foot, one side of the guide slide foot is provided with a guide groove, the bottom of the guide groove is provided with a limiting hole, the two guide slide feet of the clamping piston rod are both located in the clamping groove, the guide slide bar is located in the guide groove, and the limiting rod passes through the limiting hole.

[0022] As a further optimization of the above technical solution: screw cover side panels are fixed on both sides of the back side of the screw cover back panel.

[0023] Compared with the prior art, the present invention drives the tube cover of the reagent tube to rotate through the ingredient rotation mechanism. During this process, the height adjustment device drives the tube body of the reagent tube to move downward, and the tube cover is retained in the reagent tube cover clamp fingers, thereby realizing the separation of the tube cover and the tube body of the reagent tube; after the reagent is added, the height adjustment device drives the tube body of the reagent tube to move up, and the tube cover of the reagent tube rotates in the opposite direction, thereby realizing the closing of the reagent tube, ensuring the speed of opening and closing the lid of the reagent tube, and greatly improving the efficiency of blood testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the blood testing machine of the present invention.

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the front frame and various devices on the front frame of the blood testing machine of the present invention.

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping claw electric cylinder in the present invention.

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the clamping jaw piston rod in the present invention.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the batching device in the blood testing machine of the present invention.

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the present invention.

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the present invention after removing the rotating safety cover.

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the ingredient rotating mechanism in the present invention.

[0032] Figure 9 It is a schematic diagram of the internal structure of the composite transmission mechanism in the present invention.

[0033] Figure 10 It is a schematic diagram of the internal structure of the synchronous wheel transmission mechanism in the present invention. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Figure 1-10As shown, the blood testing machine of the present invention includes a loading device 1, a dispensing device 2, and a dispensing device 3, arranged in order from front to back on a front frame 6; and a material transfer device 4 and a testing device 5 on a rear frame 8. After a blood sample is collected, a blood collection tube and other materials are placed into the loading device 1. After the loading device 1 loads the materials, the dispensing device 2 grips the blood collection tube and other materials from the loading device 1 and moves them to a predetermined position within the dispensing device 3. The blood in the blood collection tube is sampled by the dispensing device 3, and the required test reagents are added to form a test specimen. The material transfer device 4 transfers the test specimen to the testing device 5 for blood testing.

[0035] In the above technical solution: Figure 5 As shown, the dispensing device 3 includes a capping mechanism 31, a flipping mechanism 32, a stationary mechanism 33, a cap removal and barcode scanning mechanism 34, a pipette tip positioning mechanism 35, a specimen transport mechanism 36, a reagent bottle positioning mechanism 37, and a reagent feeding mechanism 38. The dispensing device 3 is fixed to the front frame 6 via a dispensing plate 301 at the bottom. The flipping mechanism 32 is responsible for flipping the blood collection tubes or reagent tubes; the stationary mechanism 33 is responsible for keeping the blood collection tubes and reagent tubes stationary; the cap removal and barcode scanning mechanism 34 is responsible for scanning the barcodes on the blood collection tubes and opening and closing the caps; the pipette tip positioning mechanism 35 is responsible for moving the pipette tips; the specimen transport mechanism 36 is responsible for moving the test cup 7; the reagent bottle positioning mechanism 37 is used to place the glass bottles P1, P2, and P3 containing the various reagents required for blood testing; and the reagent feeding mechanism 38 is used to place glass bottles containing other reagents required for blood testing, such as CaCl2 reagent.

[0036] In the above technical solution: the cap screwing mechanism 31 is responsible for opening and closing the reagent tube, and the tube cap and the tube body of the reagent tube are threaded. Figure 6 As shown, the capping mechanism 31 includes a capping back plate 3101, and capping side plates 3102 are fixed on both sides of the back of the capping back plate 3101. The bottom of the capping side plates 3102 is fixed on the ingredient plate 301. The ingredient plate 301 is provided with a capping moving hole. The bottom of the capping back plate 3101 passes through the capping moving hole, and the top of the capping back plate 3101 is provided with an ingredient rotating mechanism 39.

[0037] In the above technical solution: Figure 7 、 8As shown, the batching rotation mechanism 39 includes a batching rotation motor 391, a front synchronous shaft 392, a rear synchronous shaft 393, and a motor top plate 394. A mounting hole 3941 is formed at one end of the motor top plate 394, and mounting steps 3942 are formed on both sides of the mounting hole 3941. A plurality of bolt holes 3943 are formed on the mounting steps 3942. In this embodiment, six bolt holes 3943 are provided on each side of the mounting steps 3942. A motor connecting plate 395 is provided in the mounting hole 3941. The batching rotation motor 391 is fixed to the bottom of the motor connecting plate 395, and the rotor of the batching rotation motor 391 passes through the motor connecting plate 395 and is connected to the rear synchronous shaft 393. The motor connecting plate 395 has mounting portions 3951 formed on both sides, each with a movable strip-shaped hole 3952 formed therein. The mounting portions 3951 are located on the mounting step 3942. Bolts pass through the movable strip-shaped hole 3952 and the bolt hole 3943 and engage with the fixing nut to mount the motor connecting plate 395 on the motor top plate 394. After installation, there is still room for the bolts to move within the movable strip-shaped hole 3952. When the motor connecting plate 395 needs to be moved, it can be pushed without completely removing the bolts before moving. The bolt hole 3943 in which the bolt is fixed determines the position and movement space of the motor connecting plate 395. A motor top block 396 is also fixed to the side of the mounting hole 3941 near the middle of the motor top plate 394 to prevent the motor connecting plate 395 from moving excessively. A rotating bearing seat 397 is fixed to the other end of the motor top plate 394. A rotating shaft 398 is mounted within the rotating bearing seat 397. The rotating shaft 398 is fixed to the front synchronous shaft 392. A timing belt 399 is sleeved between the front synchronous shaft 392 and the rear synchronous shaft 393. When the timing belt 399 needs to be adjusted, the motor connecting plate 395 is moved. A batching origin sensor 3910 is fixed to the middle of the motor top plate 394 via a Z-shaped fixing plate. The top of the rotating shaft 398 passes through the front synchronous shaft 392 and is fixed with a batching origin sensor plate 3911. As the batching rotation motor 391 drives the rear synchronous shaft 393, the front synchronous shaft 392, and the batching origin sensor 3911 to rotate, when the batching origin sensor 3910 senses the batching origin sensor 3911, the batching rotation motor 391 returns to its origin. The batching origin sensor 3911 and the batching origin sensor 3910 work together to ensure that the batching rotation motor 391 returns to its origin regardless of whether the lid is opened or closed. An electrical slip ring 3912 is also provided on the top of the rotating shaft 398. A support plate 3913 is supported on the rotating bearing seat 397 via two support rods. The electrical slip ring 3912 is located on the support plate 3913. The wires on the batching rotation mechanism 39 are all connected to the electrical slip rings. During rotation, the electrical slip rings remain stationary, so that a certain section of the wire remains stationary, preventing the wire from becoming tangled. A rotating safety cover 3914 is also installed on the motor top plate 394 , and the rotating safety cover 3914 is used to protect the various components on the motor top plate 394 .

[0038] In the above technical solution: Figure 7 As shown, the bottom of the rotating shaft 398 passes through the motor top plate 394 and is connected to the first electric clamp 100 for clamping the reagent tube cover. Figure 3 、 4 As shown, the first electric gripper 100 includes a gripper cylinder 101 and gripper piston rods 102 located on both sides of the gripper cylinder 101. The gripper cylinder 101 is purchased directly from the market. The internal structure of the gripper cylinder 101 is based on the existing technology, with only some adjustments to its external shape or structure for different usage scenarios. Figure 3 As shown, one end surface of the clamping electric cylinder 101 is provided with a concave clamping groove 1011, and the groove walls on both sides of the clamping groove 1011 are provided with protruding guide bars 1012, and a limit rod 1013 is provided in the middle of the guide bar 1012. Figure 4 As shown, the bottom of the clamping piston rod 102 is formed with a guide shoe 1021, and a guide groove 1022 is formed on one side of the guide shoe 1021. The bottom of the guide groove 1022 is formed with an elongated limiting hole 1023. The guide shoes 1021 of both clamping piston rods 102 are located in the clamping groove 1011, the guide bar 1012 is located in the guide groove 1022, and the limiting rod 1013 passes through the limiting hole 1023. The clamping electric cylinder 101 drives the clamping piston rod 102 to move. During this process, the guide bar 1012 and the guide groove 1022 cooperate to guide the movement, and the limiting rod 1013 and the limiting hole 1023 cooperate to limit the movement, preventing the clamping piston rod 102 from excessive movement.

[0039] In the above technical solution, reagent tube cap gripping fingers 313 are mounted on the gripping piston rods 102 on both sides of the first electric gripper 100. Each reagent tube cap gripping finger 313 has a semi-cylindrical gripping portion 3131 at its bottom. The two gripping portions 3131 have arc-shaped tube cap grooves 31311 formed on opposite sides of each other. The tops of the tube cap grooves 31311 also have tube cap sensing grooves 31312 formed on their tops. The walls of the tube cap grooves 31311 also have a number of vertically arranged, evenly spaced tube cap strip grooves 31313. The bottoms of the tube cap strip grooves 31313 are arc-shaped, and the tube cap strip grooves 31313 cooperate with the reagent tube caps, increasing friction and facilitating cap tightening.

[0040] In the above technical solution: Figure 6 、 7As shown, a height adjustment device 319 is also provided on the screw cap back plate 3101, and a second electric clamp 200 for clamping the reagent tube body is connected to the height adjustment device 319. The structure of the second electric clamp 200 is the same as the above-mentioned structure of the first electric clamp 100. Reagent tube body clamping fingers 315 are installed on the clamping piston rods on both sides of the second electric clamp 200. The reagent tube body clamping fingers 315 are located directly below the reagent tube cover clamping fingers 313. The two reagent tube body clamping fingers 315 are formed with a fixing groove 3151 on the opposite side of the head of the two reagent tube body clamping fingers 315, and an elastomer is provided in the fixing groove 3151. When the reagent tube body clamping fingers 315 clamp the reagent tube body, the elastomer squeezes the reagent tube body to make the clamping more secure, and because the elastomer is elastic, there will be no phenomenon of excessive squeezing of the reagent tube body causing the tube body to rupture. In this embodiment, the elastomer is polyurethane (also known as polyurethane PU elastomer), which has the advantages of good strength and small compression deformation.

[0041] In the above technical solution: Figure 6 、 7 As shown, the height adjustment device 319 includes a guide rail 3114 fixed to the front of the cover screwing back plate 3101, a guide slider 3115 is provided on the guide rail 3114, a sliding connection plate 3116 is fixed on the guide slider 3115, and the second electric clamp 200 is fixed on the sliding connection plate 3116. The height adjustment device 319 also includes a reagent tube guide block 3192 fixed to the back of the cover screwing back plate 3101, and an L-shaped height adjustment slider 3193 is provided on the side of the reagent tube guide block 3192. The height adjustment slider 3193 is driven by a driving mechanism and can move along the reagent tube guide block 3192. The driving mechanism is a composite transmission mechanism, such as Figure 6 、 7As shown in Figure 9, the composite transmission mechanism includes a fourth motor, a second screw, a third transmission shaft 93 and a fourth transmission shaft 94. The function of the screw is to convert rotational motion into linear motion. The second screw includes a second screw 91 and a second nut 92 threadedly engaged with the second screw 91. The third transmission shaft 93 is connected to the rotating shaft in the fourth motor, and the fourth transmission shaft 94 is connected to the second screw 91. A second belt 95 is sleeved between the third transmission shaft 93 and the fourth transmission shaft 94. A fourth sensing rod 96 is fixed to the height adjustment slider 3193, and the fourth sensing rod 96 is connected to the second nut 92. A reagent tube transmission block 3194 is installed on the reagent tube guide block 3192. The composite transmission mechanism is installed in the reagent tube transmission block 3194 and the reagent tube guide block 3192, wherein the third transmission shaft 93 and the fourth transmission shaft 94 are located in the reagent tube transmission block 3194. A fourth cavity is formed in the reagent tube guide block 3192, and the second screw is located in the fourth cavity. The fourth motor is mounted on the reagent tube transmission block 3194 or the frame of the blood testing machine. The fourth motor is the reagent tube moving motor 3191. In this embodiment, the fourth motor is mounted on the reagent tube transmission block 3194 and arranged parallel to the reagent tube guide block 3192. This reduces the vibration of the fourth motor from other components of the blood testing machine during operation. At the same time, the fourth motor and the other components of the height adjustment device 319 are combined to form an independent module, which is convenient for installation and disassembly. The reagent tube guide block 3192 is formed with a fourth sliding hole, which is connected to the fourth cavity. The fourth sensing rod 96 passes through the fourth sliding hole and is connected to the second nut 92. When the fourth motor is started, the fourth motor's shaft 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 move axially along the second screw 91. The second nut 92 drives the height adjustment slider 3193 and the fourth sensing rod 96 to move along the reagent tube guide block 3192. The composite transmission mechanism is driven by a motor and has low noise. The fourth motor is set parallel to the reagent tube guide block 3192 through the reagent tube transmission block 3194, which can reduce the lateral size and effectively utilize the free space in the vertical height, thereby reducing the occupied space of the entire machine. The reagent tube guide block 3192 is also equipped with a first limit sensor, an origin sensor and a second limit sensor. The first limit sensor and the second limit sensor are respectively fixed at the two ends of one side of the reagent tube guide block 3192, and the origin sensor is located between the first limit sensor and the second limit sensor and is installed on the other side of the reagent tube guide block 3192. The first limit sensor, the origin sensor and the second limit sensor are used to sense the fourth sensing rod 96. The fourth motor first drives the fourth sensing rod 96 to move to cooperate with the origin sensor. When the origin sensor senses the fourth sensing rod 96, the fourth motor resets to the origin.Then the fourth motor continues to drive the height adjustment slider 3193 and the fourth sensing rod 96 to move; in the above process, when the first limit sensor senses the fourth sensing rod 96, the fourth motor stops moving; when the second limit sensor senses the fourth sensing rod 96, the fourth motor stops moving, so the first limit sensor and the second limit sensor play a limiting role in the movement of the height adjustment slider 3193.

[0042] As an alternative to the above-mentioned composite transmission mechanism, the driving mechanism may also adopt any one of an oil cylinder, an air cylinder, a screw transmission mechanism, a synchronous wheel transmission mechanism or a chain transmission mechanism.

[0043] If a hydraulic cylinder or pneumatic cylinder is used instead, the hydraulic cylinder or pneumatic cylinder is mounted on the reagent tube guide block 3192 or the frame of the blood testing machine, and the hydraulic cylinder directly or indirectly drives the height adjustment slider 3193 to move. When this solution is adopted, the origin sensor is not required, and only a sensor that cooperates with the first and second limit sensors needs to be mounted on the height adjustment slider 3193. The advantage of this solution is the simple drive connection structure.

[0044] When replaced by a screw drive mechanism, the screw drive mechanism includes a first screw and a first motor. The screw's function is to convert rotational motion into linear motion. The first screw includes a first screw and a first nut threadedly engaged with the first screw. The first screw is connected to the rotating shaft of the first motor via a coupling. A first sensing rod is fixed to the height adjustment slider 3193 and connected to the first nut. The reagent tube guide block 3192 defines a first cavity for mounting the screw drive mechanism, wherein the first screw is located within the first cavity. The first motor is mounted on the reagent tube guide block 3192 or on the frame of the blood testing machine. The first motor is the reagent tube moving motor 3191. In this embodiment, the first motor is mounted on the reagent tube guide block 3192, reducing the impact of vibration from other components of the blood testing machine during operation. It also allows the first motor and other components of the screw drive mechanism to form a separate module, facilitating installation and removal. The reagent tube guide block 3192 defines a first sliding hole, which communicates with the first cavity. The first sensing rod passes through the first sliding hole and connects to the first nut. The advantages of the screw transmission mechanism are the same as those of the above-mentioned composite transmission mechanism. It is driven by a motor and has low noise. Compared with the composite transmission mechanism, the advantage is that the structure is simple, the first screw and the first motor cooperate to achieve rigid transmission, and the transmission is timely and rapid.

[0045] When replaced by a synchronous wheel transmission mechanism, such as Figure 10As shown, the synchronous 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 to the rotating shaft of the second motor and the two are arranged in the same direction. The second transmission shaft 02 is arranged parallel to the first transmission shaft 01. First synchronous wheels are installed on both the first and second transmission shafts 01 and 02, and a first belt 03 is sleeved between the two first synchronous wheels. A first connecting block 04 is fixed to the first belt 03. A second sensing rod is fixed to the height adjustment slider 3193 and connected to the first connecting block 04. A reagent tube transmission block 3194 is mounted on one end of the reagent tube guide block 3192. The synchronous wheel transmission mechanism is installed within the reagent tube transmission block 3194 and the reagent tube guide block 3192. The first transmission shaft 01 is installed within the reagent tube transmission block 3194, and the second motor is installed on the reagent tube transmission block 3194 or on the frame of the blood testing machine. The second motor is the reagent tube moving motor 3191. In this embodiment, the second motor is mounted on the reagent tube transmission block 3194 and is arranged perpendicular to the reagent tube guide block 3192. This reduces the vibration of the second motor from other parts of the blood testing machine when the second motor is in operation; at the same time, the second motor and other components of the synchronous wheel transmission mechanism are combined to form an independent module, which is convenient for installation and disassembly. A second cavity is formed in the reagent tube guide block 3192, and the second transmission shaft 02 is located at one end of the second cavity away from the reagent tube transmission block 3194. A second sliding hole is also formed in the reagent tube guide block 3192. The second sliding hole is connected to the second cavity. The second sensing rod passes through the second sliding hole and is connected to the first connecting block 04. The advantages of the synchronous wheel transmission mechanism are the same as those of the above-mentioned composite transmission mechanism. It is driven by a motor and has low noise. Compared with the composite transmission mechanism, the advantage is that the second motor cooperates with the first transmission shaft 01, the second transmission shaft 02, and the first belt 03 to achieve flexible transmission, which is safer. The second motor is set perpendicular to the reagent tube guide block 3192 through the reagent tube transmission block 3194, which can reduce the lateral size and effectively utilize the free space in the vertical height, thereby reducing the occupied space of the entire machine.

[0046] When replaced by a chain transmission mechanism, the chain transmission mechanism includes a third motor, a first gear, and a second gear. The gear shaft of the first gear is connected to the rotating shaft of the third motor and the two are arranged in the same direction. The gear shaft of the second gear is arranged parallel to the gear shaft of the first gear. A chain is arranged between the gear disc of the first gear and the gear disc of the second gear. A fourth connecting block is fixed to the chain. A third sensing rod is fixed to the height adjustment slider 3193, and the third sensing rod is connected to the fourth connecting block. A reagent tube transmission block 3194 is installed at one end of the reagent tube guide block 3192. The chain transmission mechanism is installed in the reagent tube transmission block 3194 and the reagent tube guide block 3192, wherein the first gear is arranged in the reagent tube transmission block 3194, and the third motor is installed on the reagent tube transmission block 3194 or the frame of the blood testing machine. The third motor is the reagent tube moving motor 3191. In this embodiment, the third motor is mounted on the reagent tube drive block 3194 and positioned perpendicular to the reagent tube guide block 3192. This reduces the impact of vibrations from other components of the blood testing machine during operation. Furthermore, the third motor and the other components of the chain drive mechanism form a separate module, making installation and removal easier. A third cavity is formed within the reagent tube guide block 3192, and the second gear is located at the end of the third cavity away from the reagent tube drive block 3194. A third sliding hole is also formed within the reagent tube guide block 3192, communicating with the third cavity. The third sensing rod passes through the third sliding hole and connects to the fourth connecting block. The chain drive mechanism has the same advantages as the aforementioned composite drive mechanism: it is driven by a motor and produces low noise. However, compared to the composite drive mechanism, the third motor cooperates with the first gear, the second gear, and the chain to achieve flexible transmission, making it safer. The reagent tube drive block 3194 allows the third motor to be positioned perpendicular to the reagent tube guide block 3192, reducing the lateral dimensions and effectively utilizing the remaining vertical space, thereby reducing the overall machine footprint.

[0047] In the above technical solution, a fixing sleeve 3120 is mounted at the bottom of the horizontal portion of the L-shaped height adjustment slider 3193. A compression spring is disposed within the fixing sleeve 3120. One end of the compression spring is fixed within the fixing sleeve 3120, and the other end is connected to an adjustment column 3121, which can move up and down within the fixing sleeve 3120. The arrangement of the adjustment column 3121 and the compression spring acts as a buffer during the height adjustment process. When the height adjustment slider 3193 moves downward, it first compresses the compression spring, which is then transmitted to the second electric gripper 200 through the compression spring and the adjustment column 3121, thereby improving the safety and stability of opening and closing the reagent tube cover. A U-shaped connecting plate 3117 is fixed to the bottom of the adjusting column 3121, and two vertically arranged limit grooves 31011 are formed on the bottom of the screw cover back plate 3101. The opening of the U-shaped connecting plate 3117 passes through the limit groove 31011 and is fixed to the bottom of the sliding connecting plate 3116, thereby realizing that the height adjustment device 319 drives the reagent tube body in the reagent tube body clamping finger 315 to move up and down.

[0048] In the above technical solution: two tension springs 3113 are also provided between the sliding connecting plate 3116 and the screw cover back plate 3101, two lower tension spring rods are fixed on the back of the sliding connecting plate 3116, and two upper tension spring rods are fixed on the screw cover back plate 3101, and the two ends of the tension spring 3113 are respectively connected to the upper and lower tension spring rods.

[0049] In the above technical solution: a reagent tube cover sensor 3118 and a reagent tube body sensor 3119 are also fixed to the front of the screw cap back plate 3101, and the reagent tube cover sensor 3118 and the reagent tube body sensor 3119 are both optical fiber sensors.

[0050] When uncapping a reagent tube, the dispensing device 2 transfers the tube between the two reagent tube cap gripping fingers 313. The first electric gripper 100 drives the reagent tube cap gripping fingers 313 to grip the tube cap. The height adjustment device 319 drives the reagent tube body gripping fingers 315 upward, and the second electric gripper 200 drives the reagent tube body gripping fingers 315 to grip the tube body. The batching rotation motor 391 is then activated, and the rear synchronous shaft 393 rotates the front synchronous shaft 392 via the synchronous belt 399, thereby also driving the reagent tube cap within the reagent tube cap gripping fingers 313 to rotate. During the uncapping process, the reagent tube cap gradually separates from the tube body. However, since the reagent tube cap does not move, the uncapping process exerts a downward force on the tube body, driving it downward. This force also stretches the tension spring 3113, which simultaneously generates a counterforce to its return state, ensuring that the head of the tube body and the reagent tube cap remain in contact with each other during the uncapping process, preventing them from interlocking. The operation of the batching rotary motor 391 stops until the tube cover sensing slot 31312 is aligned with the reagent tube cover sensor 3118. If the reagent tube is successfully opened, the reagent tube cover will be left in the reagent tube cover clamp finger 313. The reagent tube cover sensor 3118 senses whether the reagent tube cover is clamped in the reagent tube cover clamp finger 313 through the tube cover sensing slot 31312, thereby verifying whether the reagent tube opening and closing is successful. When the batching rotary motor 391 stops, the reagent tube is just opened and the reagent tube body is separated from the reagent tube cover. After the reagent tube is opened, the height adjustment device 319 drives the reagent tube body in the reagent tube body clamp finger 315 to move downward. When the reagent tube body sensor 3119 senses the reagent tube, it transmits the clamping instruction to the material picking device 2, and the reagent tube body waits to be taken away by the material picking device 2.

[0051] When the reagent tube is closed, the material removal device 2 drives the reagent tube body to move between the two reagent tube body clamping fingers 315, and the second electric clamp 200 drives the reagent tube body clamping fingers 315 to clamp the reagent tube body. The height adjustment device 319 drives the reagent tube body to rise to the top of the tube body and contact the bottom of the reagent tube cover. At this time, the tension spring 3113 has not yet fully recovered, and the restoring force of the tension spring 3113 exerts an upward force on the reagent tube body. Then, the ingredient rotation motor 391 is started, and the rear synchronous shaft 393 drives the front synchronous shaft 392 to rotate via the synchronous belt 399, thereby also driving the reagent tube cover within the reagent tube cover clamping fingers 313 to rotate. When the threaded connection between the reagent tube cover and the reagent tube body is aligned, the reagent tube body is screwed into the reagent tube cover. At the same time, the reagent tube body is driven upward by the restoring force of the tension spring 3113 so that it is in close contact with the reagent tube opening, completing the reagent tube closing. After the reagent tube is covered, the second electric clamp 200 drives the reagent tube body clamping fingers 315 to move to both sides to loosen the reagent tube body, and the height adjustment device 319 drives the reagent tube body clamping fingers 315 to descend; when the reagent tube body sensor 3119 senses the reagent tube, it transmits the clamping instruction to the material picking device 2, and the reagent tube waits to be taken away and recycled by the material picking device 2.

[0052] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should fall within the scope of protection of the present invention.

Claims

1. The screw cap mechanism of the blood testing machine is characterized by The invention comprises a capping back plate (3101), a batching rotating mechanism (39) is provided on the capping back plate (3101), a first electric clamp (100) for clamping the reagent tube cap is connected to the bottom of the batching rotating mechanism (39), a height adjustment device (319) is provided on the capping back plate (3101), and the height adjustment device (319) is connected to a second electric clamp (200) for clamping the reagent tube body, and the first electric clamp (100) and the second electric clamp (200) both comprise a clamping electric cylinder (101) and a clamping piston rod (102) located on both sides of the clamping electric cylinder (101); Reagent tube cover clamping fingers (313) are installed on the clamping piston rods on both sides of the first electric clamping jaw (100), and reagent tube body clamping fingers (315) are installed on the clamping piston rods on both sides of the second electric clamping jaw (200). The reagent tube body clamping fingers (315) are located below the reagent tube cover clamping fingers (313). The reagent tube cover clamping fingers (313) clamp the tube cover of the reagent tube, and the reagent tube body clamping fingers (315) clamp the tube body of the reagent tube. The ingredient rotating mechanism (39) drives the reagent tube cover clamping fingers (313) and the tube cover of the reagent tube to rotate, and the height adjustment device (319) drives the reagent tube body clamping fingers (315) and the tube body of the reagent tube to move up and down; The bottoms of the two reagent tube cover clamping fingers (313) are each formed with a clamping portion (3131), and the opposite sides of the two clamping portions (3131) are each formed with a tube cover groove (31311), and the groove wall of the tube cover groove (31311) is further formed with a plurality of vertically arranged and evenly arranged tube cover strip grooves (31313), and the opposite sides of the heads of the two reagent tube body clamping fingers (315) are each formed with a fixing groove (3151), and an elastic body is provided in the fixing groove (3151); The height adjustment device (319) comprises a guide rail (3114) fixed to the front of the screw cover back plate (3101), a guide slider (3115) is provided on the guide rail (3114), and the guide slider (3115) is connected to the second electric clamp (200); The height adjustment device (319) further includes a reagent tube guide block (3192) fixed to the back of the screw cap back plate (3101), and a height adjustment slider (3193) is provided on the reagent tube guide block (3192). The height adjustment slider (3193) is driven by a driving mechanism and can move along the reagent tube guide block (3192); The bottom of the height adjustment slider (3193) is connected to a U-shaped connecting plate (3117), the bottom of the screw cover back plate (3101) is formed with two limiting grooves (31011), and the opening of the U-shaped connecting plate (3117) passes through the limiting grooves (31011) and is connected to the guide slider (3115); A fixing sleeve (3120) is installed at the bottom of the height adjustment slider (3193), and a compression spring is provided in the fixing sleeve (3120). One end of the compression spring is fixed in the fixing sleeve (3120), and the other end is connected to an adjustment column (3121). The adjustment column (3121) can move up and down in the fixing sleeve (3120), and the U-shaped connecting plate (3117) is installed at the bottom of the adjustment column (3121).

2. The cap screwing mechanism of the blood testing machine according to claim 1, characterized in that A sliding connecting plate (3116) is fixed on the guide slider (3115), the opening of the U-shaped connecting plate (3117) is fixed to the bottom of the sliding connecting plate (3116), the second electric clamp (200) is fixed on the sliding connecting plate (3116), and two tension springs (3113) are provided between the sliding connecting plate (3116) and the cover screwing back plate (3101), two lower tension spring rods are fixed on the back of the sliding connecting plate (3116), and two upper tension spring rods are fixed on the cover screwing back plate (3101), and the two ends of the tension spring (3113) are respectively connected to the upper and lower tension spring rods.

3. The cap screwing mechanism of the blood testing machine according to claim 1, characterized in that The driving mechanism is any one of an oil cylinder, an air cylinder, a screw transmission mechanism, a synchronous wheel transmission mechanism, a chain transmission mechanism or a composite transmission mechanism; The screw transmission mechanism includes a first screw and a first motor, wherein the first screw includes a first screw and a first nut threadedly matched with the first screw, the first screw is connected to the rotating shaft of the first motor via a coupling, a first sensing rod is fixed on the height adjustment slider (3193), and the first sensing rod is connected to the first nut; a first cavity for installing the screw transmission mechanism is formed in the reagent tube guide block (3192), wherein the first screw is located in the first cavity, the first motor is installed on the reagent tube guide block (3192) or the frame of the blood testing machine, a first sliding hole is formed on the reagent tube guide block (3192), the first sliding hole is connected to the first cavity, and the first sensing rod passes through the first sliding hole and is connected to the first nut; The synchronous wheel transmission mechanism comprises a second motor, a first transmission shaft (01) and a second transmission shaft (02), wherein the first transmission shaft (01) is connected to the rotating shaft of the second motor and the two are arranged in the same direction, the second transmission shaft (02) is arranged in parallel with the first transmission shaft (01), and a first synchronous wheel is provided on each of the first transmission shaft (01) and the second transmission shaft (02), a first belt (03) is provided between the two first synchronous wheels, a first connecting block (04) is fixed on the first belt (03), a second sensing rod is fixed on the height adjustment slider (3193), and the second sensing rod is connected to the first connecting block (04); a reagent tube transmission block (3194) is installed at one end of the reagent tube guide block (3192), and the synchronous The wheel transmission mechanism is installed in the reagent tube transmission block (3194) and the reagent tube guide block (3192), wherein the first transmission shaft (01) is arranged in the reagent tube transmission block (3194), the second motor is installed on the reagent tube transmission block (3194) and is arranged perpendicular to the reagent tube guide block (3192) or is installed on the frame of the blood testing machine, the reagent tube guide block (3192) is provided with a second cavity, the second transmission shaft (02) is located at one end of the second cavity away from the reagent tube transmission block (3194), the reagent tube guide block (3192) is further provided with a second sliding hole, the second sliding hole is communicated with the second cavity, and the second sensing rod passes through the second sliding hole and is connected to the first connecting block (04); The chain transmission mechanism includes a third motor, a first gear and a second gear. The gear shaft of the first gear is connected to the rotating shaft of the third motor and the two are arranged in the same direction. The gear shaft of the second gear is arranged in parallel with the gear shaft of the first gear. A chain is set between the gear disc of the first gear and the gear disc of the second gear. A second connecting block is fixed on the chain. A third sensing rod is fixed on the height adjustment slider (3193), and the third sensing rod is connected to the second connecting block. A reagent tube transmission block (3194) is installed at one end of the reagent tube guide block (3192). The chain transmission mechanism is installed on the reagent tube transmission block (3194). ) and the reagent tube guide block (3192), wherein the first gear is arranged in the reagent tube transmission block (3194), the third motor is installed on the reagent tube transmission block (3194) and is arranged perpendicular to the reagent tube guide block (3192) or is installed on the frame of the blood testing machine, a third cavity is formed in the reagent tube guide block (3192), the second gear is located at one end of the third cavity away from the reagent tube transmission block (3194), and a third sliding hole is also formed in the reagent tube guide block (3192), the third sliding hole is communicated with the third cavity, and the third sensing rod passes through the third sliding hole and is connected to the second connecting block; The composite transmission mechanism includes a fourth motor, a second screw, a third transmission shaft (93) and a fourth transmission shaft (94), wherein the second screw includes a second screw (91) and a second nut (92) threadedly engaged with the second screw (91), the third transmission shaft (93) is connected to the rotating shaft in the fourth motor, the fourth transmission shaft (94) is connected to the second screw (91), the third transmission shaft (93) and the fourth transmission shaft (94) are both provided with a second synchronous wheel, a second belt (95) is sleeved between the two second synchronous wheels, a fourth sensing rod (96) is fixed on the height adjustment slider (3193), and the fourth sensing rod (96) is connected to the second nut (92); a reagent tube guide block (3192) is installed on the reagent tube guide block (3192). The tube transmission block (3194) is provided with a composite transmission mechanism installed in the reagent tube transmission block (3194) and the reagent tube guide block (3192), wherein the third transmission shaft (93) and the fourth transmission shaft (94) are located in the reagent tube transmission block (3194), a fourth cavity is formed in the reagent tube guide block (3192), the second screw rod is located in the fourth cavity, the fourth motor is installed on the reagent tube transmission block (3194) and is arranged parallel to the reagent tube guide block (3192) or installed on the frame of the blood testing machine, the reagent tube guide block (3192) is provided with a fourth sliding hole, the fourth sliding hole is connected to the fourth cavity, and the fourth sensing rod (96) passes through the fourth sliding hole and is connected to the second nut (92); A first limit sensor, an origin sensor, and a second limit sensor are installed on the reagent tube guide block (3192). The first limit sensor and the second limit sensor are respectively fixed at two ends of one side of the reagent tube guide block (3192), and the origin sensor is located between the first limit sensor and the second limit sensor.

4. The cap screwing mechanism of the blood testing machine according to claim 1, characterized in that A reagent tube cover sensor (3118) and a reagent tube body sensor (3119) are also fixed to the front of the screw cap back plate (3101), and a tube cover sensing groove (31312) is formed on the reagent tube cover clamping finger (313). The reagent tube cover sensor (3118) senses whether a reagent tube cover is clamped in the reagent tube cover clamping finger (313) through the tube cover sensing groove (31312), and the reagent tube body sensor (3119) senses whether a reagent tube body is clamped in the reagent tube body clamping finger (315).

5. The cap screwing mechanism of the blood testing machine according to claim 1, characterized in that The batching rotating mechanism comprises a batching rotating motor (391), a front synchronous shaft (392), a rear synchronous shaft (393), and a motor top plate (394). One end of the motor top plate (394) is formed with a mounting hole (3941), both sides of the mounting hole (3941) are formed with mounting steps (3942), and the mounting steps (3942) are formed with a plurality of bolt holes (3943). A motor connecting plate (395) is provided in the mounting hole (3941), and the batching rotating motor (391) is fixed to the bottom of the motor connecting plate (395). The rotor of the motor connecting plate (391) passes through the motor connecting plate (395) and is connected to the rear synchronous shaft (393). The motor connecting plate (395) is provided with mounting portions (3951) on both sides. The mounting portions (3951) are provided with movable bar holes (3952). The mounting portions (3951) are located on the mounting steps (3942). Bolts pass through the movable bar holes (3952) and the bolt holes (3943) and cooperate with the fixing nuts to mount the motor connecting plate (395) on the motor top plate (394). The mounting holes (3941) are close to the motor top plate. A motor top block (396) is also fixed to one side of the middle of the plate (394), a rotating bearing seat (397) is fixed to the other end of the motor top plate (394), a rotating shaft (398) is installed in the rotating bearing seat (397), the rotating shaft (398) is fixed to the front synchronous shaft (392), the bottom of the rotating shaft (398) passes through the motor top plate (394) and is connected to the first electric clamp (100), a synchronous belt (399) is sleeved between the front synchronous shaft (392) and the rear synchronous shaft (393), and the motor top plate (394) is fixed to the front synchronous shaft (392). A batching origin sensor (3910) is fixed in the middle, the head of the rotating shaft (398) passes through the front synchronization shaft (392) and is fixed with a batching origin induction plate (3911) that cooperates with the batching origin sensor (3910), and an electrical slip ring (3912) is also provided on the top of the rotating shaft (398). A support plate (3913) is supported on the rotating bearing seat (397) through two support rods, and the electrical slip ring (3912) is located on the support plate (3913). A rotating safety cover (3914) is also installed on the motor top plate (394).

6. The cap screwing mechanism of the blood testing machine according to claim 1, characterized in that One end face of the clamping electric cylinder (101) is provided with an inwardly concave clamping groove (1011), and the groove walls on both sides of the clamping groove (1011) are provided with protruding guide slides (1012), and a limiting rod (1013) is provided in the middle of the guide slide (1012), and the bottom of the clamping piston rod (102) is provided with a guide slide foot (1021), and one side of the guide slide foot (1021) is provided with a guide groove (1022), and the bottom of the guide groove (1022) is provided with a limiting hole (1023), and the two guide slide feet (1021) of the clamping piston rod (102) are both located in the clamping groove (1011), the guide slide bar (1012) is located in the guide groove (1022), and the limiting rod (1013) passes through the limiting hole (1023).

7. The cap screwing mechanism of the blood testing machine according to claim 1, characterized in that The screw cover side plates (3102) are fixed on both sides of the back side of the screw cover back plate (3101).

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