Medical liquid filling device

Abstract

The present invention discloses a medical liquid filling device, which relates to the technical field of medical devices, and includes a filling mechanism, a capping mechanism and a rotating mechanism. The filling mechanism is used to fill a quantitative medical liquid into a test tube located at a filling station, the capping mechanism is used to screw the bottle cap of the test tube located at the capping station, a test tube rack is provided on the rotating mechanism, and a plurality of test tube slots for placing test tubes are provided on the test tube rack. The rotating mechanism is used to drive the test tube rack to rotate so that each test tube placed on the test tube rack is rotated to the filling station and the capping station in sequence. The medical liquid filling device disclosed by the present invention has a small volume, can perform quantitative liquid filling and capping of test tubes in batches, and the filling process is intelligent, convenient, reliable and efficient. Moreover, since the bottle cap is tightened after the filling is completed, the safety of subsequent operations of medical staff is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a medical liquid filling device. Background Art

[0002] Most medical liquids are corrosive, and the amount of medical liquids used by medical staff each time is basically different in different situations. Some medical liquids only need a few milliliters at a time. Therefore, accurate filling and capping of medical liquids is crucial to reducing waste and pollution, while also protecting the health of medical staff.

[0003] Therefore, how to provide a device that can automatically fill a plurality of test tubes with a fixed amount of liquid and seal the tubes to improve the filling efficiency and safety is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] In view of this, the present invention provides a medical liquid filling device for automatically filling a plurality of test tubes with a fixed amount of liquid and sealing the tubes to improve the filling efficiency and safety.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A medical liquid filling device, comprising:

[0007] A filling mechanism, used for filling a quantitative amount of medical liquid into a test tube located at a filling station;

[0008] A capping mechanism, used for screwing the cap of the test tube located at the capping station;

[0009] A rotating mechanism is provided on the rotating mechanism with a test tube rack, the test tube rack is provided with a plurality of test tube slots for placing test tubes, and the rotating mechanism is used to drive the test tube rack to rotate so that the test tubes in the test tube slots can be rotated to the filling station and the capping station in sequence.

[0010] Optionally, in the above-mentioned medical liquid filling device, the capping mechanism comprises:

[0011] Fixing components;

[0012] A screwing spindle is rotatably disposed on the fixing assembly and is provided with a bottle cap storage slot for storing at least one bottle cap along the axial direction;

[0013] A bottle cap pressing rod is movably arranged in the bottle cap storage tank along the axial direction of the screwing spindle;

[0014] A screwing assembly is arranged on the fixing assembly and is drivingly connected to the screwing spindle to drive the screwing spindle to rotate;

[0015] A first lifting assembly is disposed on the fixing assembly and is in driving connection with the bottle cap pressing rod, and is used to drive the bottle cap pressing rod to move downward to press the bottle cap;

[0016] The second lifting component is used to drive the fixing component to rise and fall.

[0017] Optionally, in the above-mentioned medical liquid filling device, the screwing spindle comprises:

[0018] A shaft body is rotatably arranged on the fixing assembly, the shaft body is provided with the bottle cap storage groove along the axial direction, and a pressing groove is arranged on the bottom outer wall of the shaft body;

[0019] A clamping block is movably disposed in the pressing groove along the radial direction of the bottle cap storage groove, and a first inclined surface is disposed on a side of the clamping block facing away from the bottle cap storage groove;

[0020] A retaining ring is slidably mounted on the outer wall of the shaft body, and a second inclined surface slidingly matched with the first inclined surface is arranged on the inner wall of the retaining ring. An elastic member for pushing the retaining ring is mounted on the outer wall of the shaft body to push the blocking block into the bottle cap storage groove through the sliding match between the first inclined surface and the second inclined surface.

[0021] Optionally, in the above-mentioned medical liquid filling device, the screwing assembly includes:

[0022] A screwing motor is arranged on the fixing assembly;

[0023] A first transmission gear, transmission-connected to the screwing motor;

[0024] The second transmission gear is coaxially fixed with the screwing main shaft and is in transmission connection with the first transmission gear.

[0025] Optionally, in the above-mentioned medical liquid filling device, the screwing motor is designed with an anti-blocking function.

[0026] Optionally, in the above-mentioned medical liquid filling device, the first lifting assembly includes:

[0027] A first lifting motor is arranged on the fixing assembly;

[0028] A first lifting screw is rotatably disposed on the fixed assembly and is transmission-connected to the first lifting motor, and an extending direction of the first lifting screw is parallel to an extending direction of the screwing spindle;

[0029] The first lifting nut is in driving cooperation with the first lifting screw, and the bottle cap pressing rod is connected with the first lifting nut through a bearing.

[0030] Optionally, in the above-mentioned medical liquid filling device, the second lifting assembly includes:

[0031] A second lifting motor;

[0032] A second lifting screw is transmission-connected to the second lifting motor, and an extending direction of the second lifting screw is parallel to an extending direction of the screwing spindle;

[0033] The second lifting nut is matched with the second lifting screw in transmission and is connected to the fixing assembly.

[0034] Optionally, in the above-mentioned medical liquid filling device, the test tube slot is provided with an anti-rotation surface for preventing the test tube from rotating.

[0035] Optionally, in the above-mentioned medical liquid filling device, the rotating mechanism includes:

[0036] Rotating electrical machines;

[0037] The rotating platform is drivingly connected to the rotating motor, and the rotating platform is provided with a containing groove for containing the test tube rack.

[0038] Optionally, the above-mentioned medical liquid filling device further includes a first sensor and / or a second sensor, wherein the first sensor is used to detect whether a test tube exists at the filling station, and the second sensor is used to detect whether a test tube exists at the capping station.

[0039] Optionally, in the above-mentioned medical liquid filling device, a reference component used as a detection reference for the first sensor and / or the second sensor is provided on the rotating table;

[0040] The test tube rack is provided with a reference hole for embedding the reference component, the test tube slots are arranged circumferentially around the reference hole, and the side walls of the test tube slots are provided with detection windows for the detection aperture of the first sensor and / or the second sensor to pass through and reach the reference component.

[0041] Optionally, in the above-mentioned medical liquid filling device, the filling mechanism includes a liquid storage tank and a quantitative control component, the liquid outlet of the liquid storage tank is connected to a liquid outlet pipeline, and the quantitative control component is arranged on the liquid outlet pipeline for controlling the quantitative liquid outlet of the liquid storage tank.

[0042] Optionally, in the above-mentioned medical liquid filling device, the quantitative control component includes:

[0043] A manual control valve, connected between the liquid storage tank and the liquid outlet pipeline, for allowing medical personnel to manually control the connection and cutoff of the liquid outlet pipeline;

[0044] A solenoid valve, connected between the outlet of the manual control valve and the liquid outlet pipeline, for controlling the connection and cutoff of the liquid outlet pipeline;

[0045] A filling nozzle is connected to a liquid outlet arranged on the liquid outlet pipeline, and the filling station is opposite to the liquid outlet of the filling nozzle.

[0046] Optionally, in the above-mentioned medical liquid filling device, the quantitative control component controls the liquid output through the opening time of the solenoid valve; or,

[0047] The quantitative control component also includes a flow meter, and the quantitative control component measures the liquid output in the liquid outlet pipeline through the flow meter and controls the switch of the solenoid valve.

[0048] The medical liquid filling device provided by the present invention comprises a filling mechanism, a capping mechanism and a rotating mechanism. The filling mechanism is used for filling a quantitative amount of medical liquid into a test tube located at a filling station. The capping mechanism is used for screwing the bottle cap of the test tube located at the capping station. A test tube rack is arranged on the rotating mechanism. The test tube rack is provided with a plurality of test tube slots for placing the test tubes. The rotating mechanism is used for driving the test tube rack to rotate so that each test tube placed on the test tube rack is rotated to the filling station and the capping station in sequence.

[0049] Compared with the prior art, the medical liquid filling device provided by the present invention is small in size and can perform quantitative liquid filling and capping of test tubes in batches. The filling process is intelligent, convenient, reliable and efficient. Moreover, since the bottle cap is tightened after the filling is completed, the safety of subsequent operations by medical staff is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 The overall structure of the medical liquid filling device disclosed in the embodiment of the present invention is schematically shown. Figure 1 ;

[0052] Figure 2 for Figure 1 Cross-section at AA in the middle;

[0053] Figure 3 The overall structure of the medical liquid filling device disclosed in the embodiment of the present invention is schematically shown. Figure 2 ;

[0054] Figure 4 The structure of the cap screwing mechanism disclosed in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0055] Figure 5 for Figure 4 Cross-section at the middle BB;

[0056] Figure 6 for Figure 5 An enlarged view of the structure at the middle retaining ring;

[0057] Figure 7 The structure of the card block disclosed in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0058] Figure 8 The structure of the card block disclosed in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0059] Fig. 9 The structure of the cap screwing mechanism disclosed in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0060] Fig.10 for Fig. 9 Exploded diagram of

[0061] Fig.11 The structure of the cap screwing mechanism disclosed in the embodiment of the present invention is shown in FIG. Figure 3 ;

[0062] Fig.12 The structure of the second lifting assembly disclosed in the embodiment of the present invention is schematically shown in FIG. Figure 1 ;

[0063] Fig.13 for Fig.12 Sectional view at CC;

[0064] Fig.14 The structure of the second lifting assembly disclosed in the embodiment of the present invention is schematically shown in FIG. Figure 2 ;

[0065] Fig.15 The structure of the test tube disclosed in the embodiment of the present invention is schematically shown in FIG. Figure 1 ;

[0066] Fig.16 The structure of the test tube disclosed in the embodiment of the present invention is schematically shown in FIG. Figure 2 ;

[0067] Fig.17 The structure of the test tube disclosed in the embodiment of the present invention is schematically shown in FIG. Figure 3 ;

[0068] Fig.18The structure of the test tube rack disclosed in the embodiment of the present invention is schematically shown in FIG. Figure 1 ;

[0069] Fig.19 The structure of the test tube rack disclosed in the embodiment of the present invention is schematically shown in FIG. Figure 2 ;

[0070] Fig. 20 The structure of the test tube rack disclosed in the embodiment of the present invention is schematically shown in FIG. Figure 3 ;

[0071] Fig.21 It is a schematic diagram of the structure of the rotating platform disclosed in the embodiment of the present invention.

[0072] Wherein, 100 is a liquid storage tank, 110 is a manual control valve, 111 is a solenoid valve, 112 is a liquid outlet pipeline, 113 is a filling nozzle, and 120 is a first sensor;

[0073] 200 is a bracket assembly;

[0074] 300 is a cap screwing mechanism, 310 is a shaft body, 311 is a bottle cap supplementing groove, 312 is an elastic member, 313 is a retaining ring, 314 is a block, 3141 is a limiting portion, 3142 is a pressing portion, 320 is a bottle cap pressing rod, 330 is a screwing motor, 331 is a first transmission gear, 332 is a second transmission gear, 333 is a trigger plate, 334 is a photoelectric switch, 340 is a first lifting motor, 341 is a first lifting screw, 342 is a first lifting screw nut, 343 is a first coupling, 350 is a second lifting motor, 351 is a second lifting screw nut, The screw dropper, 352 is the second lifting screw nut, 353 is the lifting seat, 354 is the second fixed seat, 355 is the second lifting guide rail, 356 is the second lifting slider, 357 is the fourth bearing, 358 is the pressure cover, 359 is the second coupling, 360 is the first bearing seat, 361 is the first bearing, 362 is the second bearing seat, 363 is the nut, 364 is the second bearing, 365 is the first fixed seat, 366 is the third bearing seat, 367 is the third bearing, 368 is the fourth bearing seat, 370 is the first lifting guide rail, and 371 is the first lifting slider;

[0075] 400 is a rotating mechanism, 410 is a rotating motor, 420 is a rotating table, 421 is a reference component, and 422 is a containing tank;

[0076] 500 is a test tube rack, 501 is a test tube slot, 502 is a handle, 503 is an avoidance portion, 504 is a detection window, and 505 is an anti-transformation surface;

[0077] 600 is a test tube, 601 is an outer wall profile;

[0078] 700 for bottle caps. DETAILED DESCRIPTION

[0079] The invention discloses a medical liquid filling device, which is used for automatically filling quantitative liquid into a plurality of test tubes and sealing the tubes, so as to improve the filling efficiency and safety.

[0080] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0081] In the following, the terms "first", "second", "third", "fourth" and "fifth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third", "fourth" and "fifth" may explicitly or implicitly include one or more of the features.

[0082] Combination Figure 1-Figure 21 The medical liquid filling device disclosed in the present invention comprises a filling mechanism, a capping mechanism 300 and a rotating mechanism 400. The filling mechanism is used to fill a quantitative amount of medical liquid into a test tube 600 located at a filling station. The capping mechanism 300 is used to screw a bottle cap 700 on the test tube 600 located at the capping station. A test tube rack 500 is provided on the rotating mechanism 400. The test tube rack 500 is provided with a plurality of test tube slots 501 for placing the test tubes 600. The rotating mechanism 400 is used to drive the test tube rack 500 to rotate so that each test tube 600 placed on the test tube rack 500 is rotated to the filling station and the capping station in sequence.

[0083] In a specific implementation process, after the test tube 600 is placed on the test tube rack 500, the test tube rack 500 and the test tube 600 are placed together on the rotating mechanism 400, and the rotating mechanism 400 drives the test tube rack 500 and the test tube 600 to rotate together. During the rotation process, each test tube 600 is rotated to the filling station and the capping station in sequence. At the filling station, the filling mechanism fills a quantitative medical liquid into the test tube 600, and at the capping station, the capping mechanism 300 screws and caps the filled test tube 600. After the rotating mechanism 400 controls the test tube rack 500 to rotate one circle, it can be ensured that each test tube 600 on the test tube rack 500 has completed quantitative liquid filling and capping.

[0084] Compared with the prior art, the medical liquid filling device disclosed in the present invention is small in size and can perform quantitative liquid filling and capping of test tubes 600 in batches. The filling process is intelligent, convenient, reliable and efficient. Moreover, since the bottle cap 700 is tightened after the filling is completed, the safety of subsequent operations by medical staff is improved.

[0085] Combination Figure 1-Figure 3 The filling mechanism, the capping mechanism 300 and the rotating mechanism 400 can be arranged on the same support assembly 200, and the support assembly 200 fixes the components of each mechanism and plays a supporting role. The support assembly 200 can be formed by splicing a plurality of metal plates or plastic plates, and the specific structure of the support assembly 200 can be adjusted according to the specific structures of the filling mechanism, the capping mechanism 300 and the rotating mechanism 400.

[0086] Specifically, the capping mechanism 300 is used to store a certain amount of bottle caps 700. During the capping process, after the capping mechanism 300 drives the bottle cap 700 to move to the test tube 600 located at the capping station, the capping mechanism 300 drives the bottle cap 700 to rotate to complete the capping process; or, during the process of the capping mechanism 300 driving the bottle cap 700 to move downward, the capping mechanism 300 is always in a state of driving the bottle cap 700 to rotate until the bottle cap 700 is screwed onto the test tube 600. For ease of description, the direction in which the capping mechanism 300 drives the bottle cap 700 to rise and fall is taken as the vertical direction, and the initial position of the bottle cap 700 on the capping mechanism 300 is taken as the upper side, and the position when the capping mechanism 300 drives the bottle cap 700 to approach the capping station is taken as the lower side.

[0087] In a specific embodiment disclosed in the present invention, the capping mechanism 300 includes a fixed assembly, a screwing spindle, a bottle cap pressing rod 320, a screwing assembly, a first lifting assembly and a second lifting assembly. The screwing spindle is rotatably arranged on the fixed assembly, and a bottle cap storage tank for storing at least one bottle cap 700 is provided through the axial direction. The bottle cap pressing rod 320 is movably arranged in the bottle cap storage tank along the axial direction of the screwing spindle, and is used to press down the bottle cap 700 during the screwing process of the bottle cap 700 to ensure that the bottle cap 700 can be buckled on the test tube 600. The screwing assembly is connected to the screwing spindle in a transmission manner, and is used to drive the screwing spindle to rotate, thereby driving the bottle cap 700 to rotate. The first lifting assembly is connected to the bottle cap pressing rod 320 in a transmission manner, and is used to drive the bottle cap pressing rod 320 to move downward to press the bottle cap 700; the second lifting assembly is used to drive the fixed assembly to rise and fall, and the screwing assembly and the first lifting assembly are both arranged on the fixed assembly.

[0088] After the test tube 600 moves to the capping station, the second lifting assembly drives the screwing spindle and the bottle cap pressing rod 320 to descend to the top of the test tube 600, and then the screwing spindle stops descending. The screwing assembly drives the screwing spindle to rotate, and the bottle cap pressing rod 320 moves downward at the same time. The bottle cap 700 moves downward in a spiral under the joint action of the screwing spindle and the bottle cap pressing rod 320 until it is tightened on the test tube 600, completing the tightening process of the bottle cap 700. Finally, the second lifting assembly drives the screwing spindle and the bottle cap pressing rod 320 to move upward to the initial position.

[0089] Those skilled in the art will appreciate that the bottle cap storage tank can usually store a plurality of bottle caps 700, for example, the number of the bottle cap storage tank can be the same as the number of the test tube slots 501 on a test tube rack 500, so that the bottle caps 700 can be replenished while the test tube rack 500 is replaced, thereby ensuring the production rhythm. Since the bottle cap pressing rod 320 and the screwing spindle have a long extension length, after a batch of bottle caps 700 are screwed, the bottle cap pressing rod 320 usually does not extend out of the bottle cap storage tank. Therefore, a bottle cap replenishing slot 311 is provided on the side wall of the screwing spindle. When a batch of bottle caps 700 are screwed, the bottle cap pressing rod 320 can be replenished by the screwing spindle. Fig. 9 , the bottle cap pressing rod 320 is reset to the initial position relative to the screwing spindle. At this time, the bottle cap pressing rod 320 is located above the bottle cap replenishing groove 311 and does not affect the replenishment of the bottle cap 700.

[0090] In the process of following the lifting and lowering of the screwing spindle, the bottle cap 700 needs to be kept in the bottle cap storage slot without falling off. After the screwing of the bottle cap 700 is completed, the bottle cap 700 needs to be able to escape from the bottle cap storage slot.

[0091] Combination Figure 5 and Figure 6 In one embodiment, the screwing spindle includes a shaft body 310, a clamping block 314 and a retaining ring 313. The shaft body 310 is rotatably arranged on the fixing assembly, and a bottle cap storage tank is provided through the shaft body 310 in the axial direction, and a pressing groove is provided on the bottom outer wall of the shaft body 310; the clamping block 314 is movably arranged in the pressing groove along the radial direction of the shaft body 310, and a first inclined surface is provided on the outer wall of the clamping block 314, and the retaining ring 313 is slidably sleeved on the bottom end of the shaft body 310, and a second inclined surface that slidably cooperates with the first inclined surface is provided on the inner wall of the retaining ring 313, and an elastic member 312 for pushing the retaining ring 313 to move the clamping block 314 into the bottle cap storage tank is sleeved on the outer wall of the shaft body 310.

[0092] Combination Figure 6 , Figure 6The arrows in the figure indicate the moving direction or force direction of each component when the block 314 moves into the bottle cap storage tank. Taking the elastic member 312 as a thrust spring for pressing the retaining ring 313 downward as an example, the bottom of the first inclined surface is inclined in a direction away from the bottle cap storage tank, and the bottom of the second inclined surface is inclined in a direction away from the bottle cap storage tank. When the bottle cap 700 is stored in the bottle cap storage tank, the retaining ring 313 moves downward under the action of the elastic member 312, and the block 314 moves into the bottle cap storage tank through the cooperation of the first inclined surface and the second inclined surface, so as to clamp the bottle cap 700 and prevent the bottle cap 700 from automatically falling out of the bottle cap storage tank. At the same time, during the process of screwing the bottle cap 700 and the test tube 600, under the action of the bottle cap pressing rod 320, the bottle cap 700 moves downward and pushes the blocking block 314 out of the bottle cap storage tank. Under the cooperation of the first inclined surface and the second inclined surface, the retaining ring 313 moves upward and compresses the elastic member 312 until the bottle cap 700 is pushed out of the bottle cap storage tank, and then the blocking block 314 is reset and presses the next bottle cap 700.

[0093] If the elastic member 312 is a tension spring for pulling the retaining ring 313 upward or a thrust spring arranged below the retaining ring 313, the bottom of the first inclined surface is inclined toward the direction close to the bottle cap storage slot, and the bottom of the second inclined surface is inclined toward the direction close to the bottle cap storage slot. Its specific operating mechanism is similar to that when the elastic member 312 is a thrust spring in the above embodiment, and will not be repeated here.

[0094] Combination Figure 6-Figure 8 The clamping block 314 is provided with a limiting portion 3141 and a pressing portion 3142. The pressing portion 3142 is used to abut against the outer wall of the shaft body 310 to prevent the clamping block 314 from being pressed into the bottle cap storage groove. The pressing portion 3142 is used to be embedded in the pressing groove and press the bottle cap 700. During installation, the elastic member 312 is first installed on the shaft body 310, and then the clamping block 314 is installed in the pressing groove, and finally the retaining ring 313 is installed.

[0095] In one embodiment, the screwing assembly includes a screwing motor 330, a first transmission gear 331 and a second transmission gear 332. The screwing motor 330 is disposed on the fixing assembly, the first transmission gear 331 is in transmission connection with the screwing motor 330, and the second transmission gear 332 is coaxially fixed with the screwing spindle and in transmission connection with the first transmission gear 331. When the screwing motor 330 rotates, the first transmission gear 331 and the second transmission gear 332 are sequentially driven, thereby driving the screwing spindle and the bottle cap 700 in the screwing spindle to rotate together.

[0096] Combination Figure 5This structural form of transmission through the first transmission gear 331 and the second transmission gear 332 allows the second transmission gear 332 to be fixed in the middle position of the screwing main shaft, and at the same time makes the screwing main shaft and the power output shaft of the screwing motor 330 staggered. Compared with the structural scheme in which the power output shaft of the screwing motor 330 is coaxially arranged with the screwing main shaft and directly connected by transmission, it can effectively reduce the height of the screwing assembly in the vertical direction and enhance the stability of the structure.

[0097] Furthermore, a trigger piece 333 is provided on the second transmission gear 332, and a photoelectric switch 334 is provided on the fixed assembly. The trigger piece 333 is used to trigger the photoelectric switch 334. After a bottle cap 700 is screwed, the screwing motor 330 enables the screwing spindle to rotate and reset to the initial position through the action of the trigger piece 333 and the photoelectric switch 334, and is ready to tighten the next bottle cap 700. At the same time, in the initial position, the bottle cap replenishment slot 311 is in a position that is exposed and convenient for medical staff to replenish the bottle cap 700. According to actual conditions, the trigger piece 333 can also be provided on the first transmission gear 331 or the screwing spindle.

[0098] The screwing motor 330 has a stall protection function, and can identify the stall torque. When the screwing motor 330 is stalled, the screwing motor 330 is automatically powered off to prevent the screwing motor 330 from being damaged. With the help of the stall protection function of the screwing motor 330, the capping mechanism 300 can detect and identify the tightening state of the bottle cap 700. During the capping process, under the thrust of the bottle cap push rod 320, the bottle cap 700 is automatically screwed into the test tube 600 along the thread until resistance appears and it cannot be screwed further, and the screwing motor 330 is stalled. After the control system of the medical liquid filling device collects the stall information of the screwing motor 330, it stops the rotation of the screwing motor 330 and releases the force of the screwing motor 330. The second lifting assembly drives the screwing spindle, the bottle cap push rod 320, the screwing assembly and the first lifting assembly to rise to the initial position.

[0099] In addition, the screwing motor 330 may be configured to automatically stop rotating after driving the screwing spindle and the bottle cap 700 to rotate a preset number of times, so as to prevent the screwing motor 330 from being blocked while ensuring that the bottle cap 700 and the test tube 600 are securely tightened.

[0100] In one embodiment, the first lifting assembly includes a first lifting motor 340, a first lifting screw 341 and a first lifting nut 342. The first lifting motor 340 is arranged on the fixed assembly. The first lifting screw 341 is rotatably arranged on the fixed assembly and is transmission-connected to the first lifting motor 340 through a first coupling 343. The extension direction of the first lifting screw 341 is parallel to the extension direction of the screwing spindle; the first lifting nut 342 is transmission-coordinated with the first lifting screw 341, and the bottle cap pushing rod 320 is connected to the first lifting nut 342 so as to be driven to lift and lower by the first lifting nut 342.

[0101] When the first lifting motor 340 is started, the first lifting screw 341 rotates relative to the fixed component, and the first lifting nut 342 drives the bottle cap pressing rod 320 to rise and fall along the extending direction of the first lifting screw 341. In the process of screwing the bottle cap 700, the screwing spindle drives the bottle cap 700 to rotate, and at the same time the bottle cap pressing rod 320 presses the bottle cap 700. Therefore, in order to make the bottle cap pressing rod 320 rotate synchronously with the bottle cap 700 to reduce the friction between the bottle cap pressing rod 320 and the bottle cap 700, the bottle cap pressing rod 320 and the first lifting nut 342 are connected by the second bearing 364, so that the bottle cap 700 will not affect the bottle cap pressing rod 320 being driven to rise and fall by the first lifting nut 342 while driving the bottle cap pressing rod 320 to rotate relative to the fixed component.

[0102] In order to ensure the reliability of the lifting action of the first lifting assembly, Figure 5 A first lifting guide rail 370 is provided on the fixed component, and the first lifting nut 342 is connected to the first lifting slider 371. The first lifting guide rail 370 is arranged along the extension direction of the first lifting screw 341, and the first lifting slider 371 and the bottle cap pressing rod 320 are respectively arranged on both sides of the first lifting screw 341. As the first lifting nut 342 rises and falls, the first lifting slider 371 slides along the first lifting guide rail 370 to guide the lifting action. At the same time, it can ensure the force balance of the first lifting nut 342 to a certain extent, thereby extending its service life.

[0103] In one embodiment, the second lifting assembly includes a second lifting motor 350, a second lifting screw 351 and a second lifting nut 352. The second lifting motor 350 is arranged on the bracket assembly 200 through a second fixing seat 354. The second lifting screw 351 is connected to the second lifting motor 350 through a second coupling 359, and the extension direction of the second lifting screw 351 is parallel to the extension direction of the screwing spindle. The second lifting nut 352 is matched with the second lifting screw 351 and connected to the fixing assembly. When the second lifting motor 350 is started, the second lifting screw 351 rotates and drives the second lifting nut 352 to rise and fall, and the second lifting nut 352 drives the fixing assembly and the first lifting assembly, the screwing assembly and the screwing spindle on the fixing assembly to rise and fall together.

[0104] Combination Fig.13 The second lifting screw 351 is rotatably fixed to the second fixed seat 354 through the fourth bearing 357 , and the fourth bearing 357 is limited on the second fixed seat 354 through the pressure cover 358 .

[0105] In order to ensure the reliability of the lifting action of the second lifting assembly, Fig.12 and Fig.13 A second lifting guide rail 355 is provided on the second fixed seat 354, and the second lifting nut 352 is connected to the second lifting slider 356. The second lifting guide rail 355 is arranged along the extension direction of the second lifting screw 351, and the second lifting slider 356 and the first lifting assembly are respectively arranged on both sides of the second lifting screw 351. As the second lifting nut 352 rises and falls, the second lifting slider 356 slides along the second lifting guide rail 355 to guide the lifting action, while ensuring the force balance of the second lifting nut 352 to a certain extent, thereby extending its service life.

[0106] The first lifting assembly and the second lifting assembly mentioned above can also directly realize the lifting action through a cylinder or an electric push rod, which will not be described in detail here.

[0107] The fixing assembly can be specifically formed by splicing a plurality of metal plates or plastic plates, and the specific structure of the fixing assembly is adjusted according to the specific structure and arrangement position of the screwing spindle, the first lifting assembly and the second lifting assembly.

[0108] In one embodiment, in combination Figure 5 , Fig. 9 and Fig.10The fixed assembly includes a first bearing seat 360, a second bearing seat 362, a third bearing seat 366, a fourth bearing seat 368, a first fixed seat 365 and a lifting seat 353. The lifting seat 353 is fixedly connected to the second lifting nut 352 so as to be lifted and lowered by the second lifting nut 352. The lifting seat 353 is connected to the first fixed seat 365. The first lifting guide rail 370 is arranged on the first fixed seat 365, and the first bearing seat 360 is arranged at the top of the first fixed seat 365, the second bearing seat 362 is arranged in the middle, and the third bearing seat 366 is arranged at the bottom. The top end of the first lifting screw 341 is rotatably fixed to the first bearing seat 360 through the first bearing 361, and the bottom end is drivingly connected to the first lifting motor 340. The first lifting screw nut 342 is connected to the second bearing seat 362, and the top of the bottle cap pressing rod 320 is rotatably connected to the second bearing seat 362 through two second bearings 364 and fixed by a nut 363, so that the first lifting screw nut 342 can drive the bottle cap pressing rod 320 to rise and fall through the second bearing seat 362. The shaft body 310 is rotatably matched with the third bearing seat 366 through the third bearing 367, and is rotatably matched with the fourth bearing seat 368 through the fifth bearing.

[0109] Combination Fig.15 , Fig.16 , Fig.19 and Fig. 20 The test tube rack 500 is provided with a plurality of test tube slots 501 for holding the test tubes 600. In order to prevent the test tubes 600 from rotating during the process of screwing the bottle caps 700, the test tubes 600 are provided with outer wall profiles 601, and the test tube slots 501 have anti-rotation surfaces 505 for cooperating with the outer wall profiles 601 to prevent the test tubes 600 from rotating. Exemplarily, the cross-section of the test tube slots 501 can be a polygon such as a quadrilateral or a hexagon, and correspondingly, the cross-sectional shape of the outer wall profile 601 of the test tube 600 corresponds to the cross-sectional shape of the test tube slots 501.

[0110] The rotating mechanism 400 includes a rotating table 420 and a rotating motor 410. The rotating table 420 is rotatably disposed on the support assembly 200 and is provided with a containing slot 422 for containing the test tube rack 500. The rotating motor 410 is disposed on the support assembly 200 and is transmission-connected to the rotating table 420, and is used to drive the rotating table 420 to drive the test tube rack 500 to rotate, so that each test tube slot 501 rotates to the filling station and the capping station in sequence during filling.

[0111] The specific structure of the rotating mechanism 400 can be adjusted according to the actual situation, and it is only necessary to ensure that the rotating platform 420 can drive the test tube rack 500 to rotate. Figure 2 and Figure 3In the above embodiment, the rotating table 420 is arranged on the top of the rotating motor 410, and a three-dimensional spatial layout is adopted in which the rotating table 420 is directly connected to the power output shaft of the rotating motor 410, that is, the rotation axis of the rotating table 420 is coaxially arranged with the power output shaft of the rotating motor 410; in other embodiments, the rotation axis of the rotating table 420 is parallel to the power output shaft of the rotating motor 410 and is staggered, and the two are transmitted through a gear structure to realize a planar spatial layout.

[0112] Furthermore, in order to achieve safe filling of liquid and avoid the situation where the liquid is directly filled into the test tube rack 500 or the rotating table 420 when the test tube 600 is not placed in some test tube slots 501, a first sensor 120 is provided on the support assembly 200. The first sensor 120 is arranged toward the filling station and is used to detect whether there is a test tube 600 at the filling station, so as to judge whether the filling mechanism currently needs to discharge liquid. The first sensor 120 can be a distance sensor, an image sensor, a photoelectric sensor, etc. The first sensor 120 can be specifically arranged above the rotating table 420 to directly detect whether the test tube 600 is in place from the top position of the test tube rack 500. At this time, the detection path of the first sensor 120 is perpendicular to the rotation plane of the test tube rack 500.

[0113] According to the specific detection principle of the first sensor 120 , corresponding structures may be provided on the rotating table 420 and the test tube rack 500 to facilitate detection by the first sensor 120 .

[0114] In some embodiments, the first sensor 120 is an image sensor, and its detection path is parallel to the rotation plane of the test tube rack 500. Fig.18 A detection window 504 is provided on the side wall of each test tube slot 501 , and each detection window 504 is arranged on the outer peripheral wall of the test tube rack 500 . The first sensor 120 can detect whether there is a test tube 600 at the filling station at the detection window 504 .

[0115] In some embodiments, the first sensor 120 is a photoelectric sensor, and its detection principle is to first detect the light reflection amount of the background reference, and then detect the light reflection amount after the object to be detected is added, and calculate the difference between the two to determine whether the object to be detected exists.

[0116] Specifically, combined Fig. 20A reference component 421 serving as a detection reference for the photoelectric sensor is provided on the rotating table 420. The reference component 421 may be a circular base column. The position on the circular base column corresponding to the photoelectric sensor is evenly painted black to serve as a calibration portion, and the calibration portion is provided around the circumference of the reference component 421. A reference hole for embedding the reference component 421 is provided in the middle position of the test tube rack 500, and each test tube slot 501 is circumferentially arranged around the reference hole, and a detection window 504 is provided on the side wall of each test tube slot 501. Through the setting of the detection window 504, when there is no test tube 600 at the filling station, the detection aperture of the photoelectric sensor can pass through the test tube slot 501 through the detection window 504 to reach the calibration part and obtain a first light reflection amount; when there is a test tube 600 at the filling station, the detection aperture of the photoelectric sensor can pass through the detection window 504 and the test tube 600 to reach the calibration part and obtain a second light reflection amount, and whether there is a test tube 600 at the filling station is judged by the numerical difference between the first light reflection amount and the second light reflection amount.

[0117] Furthermore, combined with Fig. 20 The test tube rack 500 is provided with an avoidance portion 503. Along the circumference of the test tube rack 500, each test tube slot 501 is arranged at intervals, and the avoidance portion 503 is arranged between two test tube slots 501. At the avoidance portion 503, the reference hole is connected to the outside. When the medical liquid filling device is in the initial state, the avoidance portion 503 is in the filling position, and each test tube slot 501 is not in the filling position. At this time, the detection aperture of the photoelectric sensor can be along Fig.19 and Fig. 20 The direction indicated by the middle arrow directly hits the calibration part of the reference component 421 at the avoidance part 503, and the photoelectric sensor detects the first light reflection amount, and the filling mechanism remains in a liquid-free state; when the rotating motor 410 controls the rotating table 420 to rotate one circle to complete the liquid filling and capping of all the test tubes 600 on the test tube rack 500, the avoidance part 503 returns to the filling station, and the rotating motor 410 automatically stops at this time, and the photoelectric sensor detects the first light reflection amount, and the filling mechanism remains in a liquid-free state.

[0118] Combination Fig.19 and Fig.21 By setting the avoidance portion 503, the test tube rack 500 has a non-rotationally symmetrical structure. At the same time, the shape of the containing groove 422 matches the bottom shape of the test tube rack 500. The avoidance portion 503 can be used as a mark to identify the rotation position of the rotating table 420, which is convenient for medical staff to judge the liquid filling progress of each test tube 600.

[0119] The test tube slots 501 are evenly arranged, and an angle encoder with an absolute value is provided inside the rotating motor 410 so that the rotation angle can be controlled by the angle encoder.

[0120] Furthermore, a second sensor is provided on the support assembly 200, and the second sensor is used to detect whether the test tube 600 is in place at the capping station. The specific structure and operation mechanism of the second sensor may be the same as those of the first sensor 120, which will not be described in detail herein; alternatively, only the first sensor 120 is provided on the support assembly 200, and the second sensor is not provided, and the capping mechanism 300 can receive a signal from the filling mechanism that the filling is completed. When the first sensor 120 detects that the test tube 600 has arrived at the filling station, the filling mechanism discharges liquid. After the discharge of liquid is completed, the filling mechanism sends a signal to the capping mechanism 300. After receiving the signal, the capping mechanism 300 waits for a preset time for the rotating mechanism 400 to rotate the test tube 600 from the filling station to the capping station, and then automatically performs the capping action.

[0121] Combination Fig.18 In order to facilitate medical staff to take the test tube, a handle 502 is fixedly installed above the test tube rack 500.

[0122] The filling mechanism includes a liquid storage tank 100 and a quantitative control component. The liquid storage tank 100 is arranged on the bracket component 200 and is used to hold a certain amount of liquid. The liquid outlet of the liquid storage tank 100 is connected to a liquid outlet pipeline 112. The quantitative control component is arranged on the liquid outlet pipeline 112 and is used to control the liquid storage tank 100 to discharge liquid quantitatively.

[0123] In actual use, the liquid to be filled is first placed in the liquid storage tank 100, and the type of the liquid is not limited to liquid medicine, pure water, etc. Then the test tubes 600 that need to be filled with liquid are placed one by one in each test tube slot 501 of the test tube rack 500, and then the test tube rack 500 and the test tube 600 are placed together on the rotating mechanism 400 to complete the preparation work. The medical liquid filling device is started, and the rotating mechanism 400 drives the test tube rack 500 to rotate so that the first test tube 600 rotates to the filling station and then stops. At the same time, the filling mechanism controls the liquid storage tank 100 to flow a preset amount of liquid to the filling station. After the first test tube 600 is filled, the filling mechanism stops discharging liquid, and the rotating mechanism 400 drives the test tube rack 500 to continue rotating to the capping station for capping, and at the same time, the next test tube 600 moves to the filling station for liquid filling. The above process is repeated until a preset number of test tubes 600 or all test tubes 600 on the test tube rack 500 are filled and capped. After filling, the medical staff can directly remove the test tube rack 500 together with the test tubes 600 from the medical liquid filling device for subsequent operations.

[0124] The liquid storage tank 100 is arranged at the top of the bracket assembly 200 to facilitate the discharge of liquid. The specific shape of the liquid storage tank 100 is not limited. An air intake valve is arranged on the liquid storage tank 100 to ensure the air pressure balance in the liquid storage tank 100 and ensure that the liquid can fall smoothly. In addition, the air intake valve is also used to prevent the liquid in the liquid storage tank 100 from volatilizing.

[0125] In order to achieve quantitative control of liquid filling, combined with Figure 1 The quantitative control component includes a manual control valve 110, a solenoid valve 111 and a filling nozzle 113. The manual control valve 110 can be a ball valve and is connected between the liquid storage tank 100 and the liquid outlet pipeline 112, so that medical staff can manually control the connection and cutoff of the liquid outlet pipeline 112. The solenoid valve 111 is connected between the outlet of the manual control valve 110 and the liquid outlet pipeline 112 to control the connection and cutoff of the liquid outlet pipeline 112; the filling nozzle 113 is connected to the liquid outlet of the liquid outlet pipeline 112, and the filling station is opposite to the liquid outlet of the filling nozzle 113.

[0126] Specifically, the quantitative control component can control the liquid output amount by the opening time of the solenoid valve 111. In some embodiments, the quantitative control component further includes a flow meter, and the quantitative control component measures the liquid output amount in the liquid outlet pipeline 112 by the flow meter, and controls the opening time of the solenoid valve 111 accordingly, thereby realizing accurate control of the filling liquid amount. Along the liquid outlet direction of the liquid outlet pipeline 112, the solenoid valve 111 can be arranged at an upstream position or a downstream position of the flow meter.

[0127] The relative positions of the manual control valve 110, the solenoid valve 111, the flowmeter and the liquid outlet pipeline 112 can be interchanged. In one embodiment, an air inlet valve is arranged at the top of the liquid storage tank 100, and the air inlet valve can be manually operated to control the switch. A liquid outlet is arranged at the bottom of the liquid storage tank 100, and a manual control valve 110 is arranged at the liquid outlet. The manual control valve 110 is sealed and connected with the liquid outlet of the liquid storage tank 100 through a first connecting nut and a first sealing gasket; the liquid outlet pipeline 112 is a bendable silicone hose, and a hose connector is arranged at the first end of the silicone hose, and the hose connector is threadedly connected with the threaded connector at the outlet of the manual control valve 110, and the two are sealed by a second connecting nut and a second sealing gasket; the second end of the silicone hose is connected to the flowmeter, and the outlet of the flowmeter is connected to the solenoid valve 111, and the solenoid valve 111 is fixed on the bracket assembly 200, and the outlet of the solenoid valve 111 is installed with a nozzle 113. The nozzle 113 is made of rigid material to ensure stable liquid discharge.

[0128] When liquid filling is performed, the liquid flows out from the liquid storage tank 100 , passes through the manual control valve 110 , the silicone hose, the flow meter and the solenoid valve 111 in sequence, and finally flows to the test tube 600 through the filling nozzle 113 .

[0129] Those skilled in the art will appreciate that the height between the filling nozzle 113 and the test tube 600 can be adjusted according to actual conditions, as long as it is ensured that the liquid does not splash.

Claims

1. A medical liquid filling device, characterized in that: include: A filling mechanism, used for filling a quantitative amount of medical liquid into a test tube (600) located at a filling station; A capping mechanism (300) for screwing a bottle cap (700) on a test tube (600) located at a capping station; a rotating mechanism (400), wherein a test tube rack (500) is arranged on the rotating mechanism (400), wherein the test tube rack (500) is provided with a plurality of test tube slots (501) for placing test tubes (600), and wherein the rotating mechanism (400) is used to drive the test tube rack (500) to rotate so that the test tubes (600) in the test tube slots (501) can be rotated to the filling station and the capping station in sequence; The cap screwing mechanism (300) comprises a fixed component, a screwing spindle, a bottle cap pressing rod (320), a screwing component, a first lifting component and a second lifting component; the screwing spindle is rotatably arranged on the fixed component and is provided with a bottle cap storage tank for storing at least one bottle cap (700) along the axial direction; the bottle cap pressing rod (320) is movably arranged in the bottle cap storage tank along the axial direction of the screwing spindle; the screwing component is arranged on the fixed component and is in driving connection with the screwing spindle for driving the screwing spindle to rotate; the first lifting component is arranged on the fixed component and is in driving connection with the bottle cap pressing rod (320) for driving the bottle cap pressing rod (320) to move downward to press the bottle cap (700); the second lifting component is used to drive the fixed component to move up and down; The screwing spindle comprises a shaft body (310), a clamping block (314) and a retaining ring (313); the shaft body (310) is rotatably arranged on the fixing assembly, the shaft body (310) is provided with the bottle cap storage groove in the axial direction, and a pressing groove is provided on the bottom outer wall of the shaft body (310); the clamping block (314) is movably arranged in the pressing groove in the radial direction of the bottle cap storage groove, and a first inclined surface is provided on the side of the clamping block (314) facing away from the bottle cap storage groove; the retaining ring (313) is slidably sleeved on the outer wall of the shaft body (310), and a second inclined surface slidably matched with the first inclined surface is provided on the inner wall of the retaining ring (313); and an elastic member (312) for pushing the retaining ring (313) to push the clamping block (314) into the bottle cap storage groove through the sliding match between the first inclined surface and the second inclined surface is sleeved on the outer wall of the shaft body (310).

2. The medical liquid filling device according to claim 1, characterized in that: The screwing assembly comprises: A screwing motor (330) is arranged on the fixing assembly; A first transmission gear (331) is transmission-connected to the screwing motor (330); The second transmission gear (332) is coaxially fixed to the screwing main shaft and is transmission-connected to the first transmission gear (331).

3. The medical liquid filling device according to claim 2, characterized in that: The screwing motor (330) has an anti-blocking function.

4. The medical liquid filling device according to claim 1, characterized in that: The first lifting assembly comprises: A first lifting motor (340) is arranged on the fixing assembly; A first lifting screw (341) is rotatably disposed on the fixed assembly and is transmission-connected to the first lifting motor (340), and an extension direction of the first lifting screw (341) is parallel to an extension direction of the screwing spindle; The first lifting nut (342) is in transmission cooperation with the first lifting screw (341), and the bottle cap pressing rod (320) is connected to the first lifting nut (342) via a bearing.

5. The medical liquid filling device according to claim 1, characterized in that: The second lifting assembly comprises: A second lifting motor (350); A second lifting screw (351) is transmission-connected to the second lifting motor (350), and an extension direction of the second lifting screw (351) is parallel to an extension direction of the screwing spindle; The second lifting nut (352) is in transmission cooperation with the second lifting screw (351) and is connected to the fixing assembly.

6. The medical liquid filling device according to claim 1, characterized in that: The test tube slot (501) is provided with an anti-rotation surface (505) for preventing the test tube (600) from rotating.

7. The medical liquid filling device according to any one of claims 1 to 6, characterized in that: The rotating mechanism (400) comprises: Rotating motor (410); The rotating table (420) is drivingly connected to the rotating motor (410), and a containing groove (422) for containing the test tube rack (500) is provided on the rotating table (420).

8. The medical liquid filling device according to claim 7, characterized in that: It also comprises a first sensor (120) and / or a second sensor, wherein the first sensor (120) is used to detect whether a test tube (600) exists at the filling station, and the second sensor is used to detect whether a test tube (600) exists at the capping station.

9. The medical liquid filling device according to claim 8, characterized in that: The rotating table (420) is provided with a reference component (421) used as a detection reference for the first sensor (120) and / or the second sensor; The test tube rack (500) is provided with a reference hole for the reference component (421) to be embedded, the test tube slots (501) are arranged circumferentially around the reference hole, and the side walls of the test tube slots (501) are provided with detection windows (504) for the detection aperture of the first sensor (120) and / or the second sensor to pass through and reach the reference component (421).

10. The medical liquid filling device according to any one of claims 1 to 6, characterized in that: The filling mechanism comprises a liquid storage tank (100) and a quantitative control component, the liquid outlet of the liquid storage tank (100) being connected to a liquid outlet pipeline (112), and the quantitative control component being arranged on the liquid outlet pipeline (112) and used for controlling the quantitative liquid outlet of the liquid storage tank (100).

11. The medical liquid filling device according to claim 10, characterized in that: The quantitative control component comprises: A manual control valve (110) is disposed in communication between the liquid storage tank (100) and the liquid outlet pipeline (112), and is used for medical personnel to manually control the connection and cutoff of the liquid outlet pipeline (112); a solenoid valve (111), arranged in communication between the outlet of the manual control valve (110) and the liquid outlet pipeline (112), and used to control the connection and cutoff of the liquid outlet pipeline (112); The filling nozzle (113) is connected to a liquid outlet provided on the liquid outlet pipeline (112), and the filling station is opposite to the liquid outlet of the filling nozzle (113).

12. The medical liquid filling device according to claim 11, characterized in that: The quantitative control component controls the liquid output through the opening time of the solenoid valve (111); or, The quantitative control component also includes a flow meter, and the quantitative control component measures the liquid outflow volume of the liquid in the liquid outflow pipeline (112) through the flow meter, and controls the switch of the solenoid valve (111).

Images