CN115321450A - Rotary switch cover mechanism - Google Patents
Rotary switch cover mechanism Download PDFInfo
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- CN115321450A CN115321450A CN202211017823.6A CN202211017823A CN115321450A CN 115321450 A CN115321450 A CN 115321450A CN 202211017823 A CN202211017823 A CN 202211017823A CN 115321450 A CN115321450 A CN 115321450A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 31
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- 238000013461 design Methods 0.000 abstract description 7
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
- B67B7/00—Hand- or power-operated devices for opening closed containers
- B67B7/14—Hand- or power-operated devices for opening closed containers for removing tightly-fitting lids or covers, e.g. of shoe-polish tins, by gripping and rotating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
- B67B3/00—Closing bottles, jars or similar containers by applying caps
- B67B3/20—Closing bottles, jars or similar containers by applying caps by applying and rotating preformed threaded caps
- B67B3/2066—Details of capping heads
Abstract
The invention provides a rotary switch cover mechanism, which comprises a cover screwing component, a cover rotating component and a cover rotating component, wherein the cover screwing component is used for driving a container cover to be unscrewed or tightly closed from a container body; the lifting assembly is connected with the cap screwing assembly and comprises a first driving part, and the cap screwing assembly is driven by the first driving part to at least finish the vertical movement; the cap screwing assembly comprises a rotating head provided with an external thread structure, the external thread structure can be in fit connection with a cover body internal thread of the container which is subjected to cap opening and closing, the cap screwing assembly further comprises a second driving part which is used for driving the rotating head to rotate anticlockwise or clockwise, and the rotating head which is matched and connected drives the container cover to rotate anticlockwise or clockwise, so that the container cover is opened or closed tightly, threads in the container cover are utilized to the maximum degree, and the multiple rotating heads are further guaranteed to be opened efficiently and reliably for multiple sample containers through the transmission design of the invention.
Description
Technical Field
The invention relates to the field of automation of medical instruments, in particular to a rotary switch cover mechanism in the field of automation.
Background
In clinical laboratories, various types of tests are generally performed to measure various chemical components in biological fluids obtained from patients, such as whole blood, serum, plasma, interstitial fluid, urine, etc., and due to the continuous influence of various viruses in recent years, sample detection using nasal swabs, pharyngeal swabs, anal swabs, etc. as detection objects is becoming more and more popular, and sample detection involves public safety related fields, so that the detection sample amount is particularly huge, and the operation has a particularly high requirement on the operation efficiency of equipment and personnel, and also has a great requirement on the safety of detection personnel.
In order to protect the test specimen from the environment, the specimen container is usually equipped with a lid or closure. Some test sample processing steps include pipetting operations using a pipetting device, such as removing and/or dispensing a sample from and/or into a sample container. Prior to such pipetting operations, the caps or closures first need to be removed from the sample containers manually or automatically using, for example, a cap removal device. The removed lid is then discarded as solid biological waste, which may cause environmental pollution and additional disposal costs. After all predetermined pre-processing and/or analytical test sample processing steps are completed, if further test sample processing steps are later required, the test sample is either pre-stored in a disposal unit or staged in a laboratory storage and retrieval system. The sample container is reclosed prior to disposal or storage using a new closure material, either manually or automatically using, for example, a closure installation device. However, since the dimensions, such as the diameter or height, and the geometry of the cap may vary depending on the respective sample container type, the fitment cap may not always be used. Thus, optimal protection of the sample cannot always be ensured, leading to potential sample contamination or cross-contamination, which may have a serious impact on sample integrity, test results and subsequent diagnostics. Therefore, the cover opening and closing mechanism which needs to be designed can be used for matching and temporarily storing the container cover, and the corresponding container cover before the container cover is covered again after the pretreatment or the analysis is finished, so that the sample is prevented from being polluted, and the problem of cover matching does not exist.
Japanese patent No. 2522078B2 discloses a method for automatically opening and closing a cover of a specimen container, which includes a cover opening mechanism and a gripping mechanism of the specimen container, wherein the gripping mechanism clamps a specimen container body in the process of opening the specimen container under the control of a controller, so as to realize the final opening of the container cover; the European patent application EP3489694A1 filed by Roche also adopts a similar design, and the container body receiving part and the container cover receiving part are designed into an integral combination type, so that the risk of confusion or cross contamination caused by over centralized placement positions of the container covers is avoided; the united states invention patent US10151765B2 adopts another different design idea, which designs a turntable type cover opening and closing device, separates the cover opening and closing positions, and is suitable for a production line type operating system; US patent 6257091B1 proposes an integrated sample container closure device comprising a sample container body gripping portion integrated into a closure structure, which does not require additional force or an auxiliary mechanism to grip the sample container during closure; similar structures are also used in european patent EP2462455B1, US patent application US20190039869 A1. However, all the above designs result in complicated design of the switch cover clamping head, thereby resulting in a large risk of failure and requiring a large operating space.
Disclosure of Invention
The invention aims to: aiming at the existing problems, the invention provides the rotary cover opening and closing mechanism which acts on the existing spiral cover and is convenient to process and produce, the processing threads of the cover are utilized to adapt to the specific type of the spiral cover, on one hand, the problem that the clamping program design is needed after the cover is unloaded is solved, on the other hand, the process threads are utilized to the maximum extent, the moving parts of the cover opening and closing mechanism are reduced, and the reliability of the system is ensured.
The rotary switch cover mechanism provided by the invention acts on a sample container comprising a container body and a container cover, and is characterized by comprising a rotary cover assembly, a rotary switch cover assembly and a rotary switch cover assembly, wherein the rotary cover assembly is used for driving the container cover to rotate relative to the container body and is screwed on or screwed off the container body; the lifting assembly is connected with the cap screwing assembly and is used for driving the cap screwing assembly to at least complete vertical movement; the cap screwing assembly comprises a rotating head provided with an external thread structure, the external thread structure can be matched and connected with internal threads of a container cover of the sample container which is opened and closed by an executing cap, and the container cover is driven to rotate anticlockwise or clockwise by anticlockwise or clockwise rotation, so that the container cover is turned on or off tightly.
Preferably, the lifting assembly comprises a first driving part for providing power for the lifting assembly; the cap screwing assembly further comprises a second driving part for providing power for the rotating head to rotate anticlockwise or clockwise.
Preferably, the number of the rotating heads is N, where N is an integer greater than 2.
Preferably, the rotating head is directly or indirectly connected with the linkage device, and the second driving part is directly or indirectly connected with the linkage device through a driving part connected to the driving end of the second driving part, so that the second driving part drives the rotating head to rotate anticlockwise or clockwise.
Preferably, the spiral cover assembly further comprises a rotating sleeve sleeved outside the rotating head, and the lower edge of the rotating sleeve and/or the inner wall close to the lower edge of the rotating sleeve are/is provided with tooth grooves capable of being adapted to anti-slip threads on the container cover, so as to prevent the container cover from being loosened from the rotating head.
Preferably, a buffer member is included between the second driving part and the rotating head for buffering the container cover during the screwing or screwing process.
Preferably, the second driving part can drive all N rotating heads to operate at the same time in the same rotating direction and at the same rotating speed.
Preferably, the screw cap assembly further comprises a container cap clamping structure arranged outside the rotating head, and the container cap can be clamped to the rotating head in a threaded connection.
Preferably, the clamping structure comprises an elastic element and a segment body directly or indirectly connected with the elastic element, and when the rotating head is connected with the container cover, at least part of the segment body can be contacted with the container cover to realize clamping effect on the container cover.
Preferably, the lifting assembly further comprises a lifting frame and a screw rod, the first driving part is connected with the lifting frame, and the screw rod penetrates through the first driving part and is connected with the cap screwing assembly.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the rotating head with the external threads is matched with the internal threads of the container cover, so that the threads in the container cover of a screw cap type are utilized to the maximum extent, the rotating head can rotate along the same direction after being rotatably connected with the container cover through the matching design of the reverse threads, the container cover and the container body can be unscrewed, the rotating head is also suitable for the screwing and closing process, and the rotating and uncovering operation of the sample container under the matching of lifting motion is realized through different drives.
2. The operation of opening and closing the covers of the plurality of sample containers simultaneously is further realized through the N rotating heads, the N rotating heads can run in the same rotating direction and at the same rotating speed at the same time, the fact that the plurality of sample containers can be reliably opened and closed simultaneously is guaranteed, the synchronous opening and closing operation of the cover of the sample containers obtained by batch production only has small differences can be adapted, and all the rotating heads of the second driving part are designed to drive simultaneously.
3. The screw cap assembly further comprises a container cover clamping structure arranged outside the rotating head, on one hand, the container cover can be clamped so that the container cover can be reliably clamped by mechanical force, the reliable connection of the rotating head and the container cover in the cover opening and closing process is ensured, and on the other hand, the rotating head can guide and right the container cover, so that the rotating head and the container cover are reliably connected without deflection.
Drawings
FIG. 1 is a schematic view of an eight channel rotary switch cover mechanism provided by the present invention;
FIG. 2 is a schematic view of an internal rotation structure of an eight-channel rotary switch cover mechanism provided by the present invention;
FIG. 3 is a schematic cross-sectional front view of a screw cap assembly according to the present invention;
FIG. 4 is a schematic sectional elevation view of another resiliently arranged screw cap assembly provided by the present invention;
FIG. 5 is a schematic view of a sample container according to the present invention;
FIG. 6 is a schematic view of a screw cap assembly of the present invention in a ready to perform uncapping condition;
FIG. 7 is a schematic view of a screw cap assembly connecting container lid according to the present invention;
FIG. 8 is a schematic view of another alternative closure assembly connecting cover provided by the present invention;
FIG. 9 is a schematic view illustrating a state of a screw cap assembly in connection with a container cap in an ascending process according to the present invention;
fig. 10 is a schematic view illustrating the effect of the cap screwing assembly of the present invention that the cap is not correctly opened;
fig. 11 and 12 are schematic views illustrating a closing process of a screw cap assembly according to the present invention.
The labels in the figure are: the device comprises a lifting frame 1, an encoder 2, a first driving part 3, a screw rod 4, a vertical guide rail 5, a sliding block 6, a second driving part 7, a speed reducer 8, a driving gear 9, a rotating head 10, a rotating sleeve 11, a limiter 12, a limiting baffle 13, an inductor 14, a bearing 15, a linkage 16, a rotating shaft 17, a limiting nail 18, a transmission gear 19, a buffer 20, a sample container 21, a container body 210, a container cover 211, a base 212, a sample frame 22, a spring connecting piece 23, a loading hole 220, a clamping structure 24 and a segment body 241.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
As shown in fig. 1, a rotary switch cover mechanism includes a cover rotating assembly for performing a cover opening and closing operation and a lifting assembly for driving the cover rotating assembly to move vertically. The lifting assembly comprises a lifting frame 1, a screw rod 4 and a first driving part 3, the first driving part 3 is a lifting motor, the first driving part 3 is fixed on the lifting frame 1 through a motor mounting seat, the screw rod 4 penetrates through the first driving part 3 and is connected with a screw cap assembly, the first driving part 3 drives the screw rod 4 to drive the screw cap assembly to move up and down, and meanwhile, the screw cap assembly is matched with rotary motion to realize the operation of opening and closing the sample container 21. The first driving part 3 is further connected with an encoder 2 for acquiring the rotating speed of the first driving part 3 and feeding back a signal to a controller (not shown) for accurately controlling the lifting speed of the cap screwing component. Vertical guide rails 5 are further arranged on two sides of the lifting frame 1, and the screw cap assembly is connected to the vertical guide rails 5 in a sliding mode through sliding blocks 6. The lifting frame 1 is also provided with a limiter 12, the cap screwing component is provided with a limiting blocking piece 13, and the limiter 12 is vertically opposite to the limiting blocking piece 13 and is used for resetting the cap screwing component before and after the movement begins; simultaneously, the spiral cover assembly is limited in the ascending process, and the influence of excessive movement of the first driving part 3 on normal operation is prevented. The position limiter 12 can be selected as a photoelectric switch, when the position limiting blocking piece 13 contacts the position limiter 12, signals can be transmitted to the controller to achieve position control, and the position limiter can accurately achieve the purpose of reaching a set position. When the sample container 21 needs to be opened and closed, the first driving part 3 can be driven to operate, for example, the first driving part can operate clockwise, at the moment, the first driving part 3 is fixed on the lifting frame 1, the rotary motion of the screw rod 4 is converted into the descending motion for driving the screw cap assembly, and in the process of completing the opening and the ascending process of the cover, the first driving part 3 can operate anticlockwise, so that the screw cap assembly can at least complete the vertical motion under the driving of the first driving part 3.
As shown in fig. 3 and 4, the spiral cover assembly comprises a rotary structure and a rotary head 10 sleeved on the rotary structure, the rotary structure comprises a bearing 15, a linkage 16 and a rotary shaft 17 which are sequentially arranged from top to bottom, the bearing 15 is fixed on the top of the rotary shaft 17 through a screw and a gasket, the linkage 16 is a rotary shaft linkage gear, a jackscrew of the left end is fixed at the middle end of the rotary shaft 17, a rotary sleeve 11 and the rotary head 10 are fixed at the lower end of the rotary shaft 17 through a limit screw 18, the rotary sleeve 11 is sleeved outside the rotary head 10, and the rotary head 10 is provided with an external thread for screwing with a container cover 211. The rotating head 10 cooperates with the lifting and rotating motion to realize the cover opening and closing operation of the sample container 21. In order to prevent the container cover 211 from being released from the rotary head 10 after the cover is successfully opened, the lower edge of the rotary sleeve 11 is provided with splines matched with the anti-slip grooves of the container cover 211, and the splines can be designed into fine-pitch splines or coarse-pitch splines. The cover 211 fixes the cover 211 by allowing the spline of the rotary sleeve 11 to be caught in the non-slip pattern of the cover 211 by an upward force. The rotating head 10 is internally provided with a buffer 20, the buffer 20 is a spring and plays a role of buffering so as to leave the opportunity of idle running of the rotating head 10 which is temporarily failed to be matched with the groove thread of the container cover 211, and simultaneously, the damage caused by the extrusion of rigid pressure on the external thread of the rotating head 10 or the thread of the container cover 211 is avoided until the rotating head 10 is in threaded connection with the groove thread of the container cover 211 and is screwed tightly; and simultaneously, the lower edge of the rotating sleeve 11 is clamped into the anti-slip lines of the container cover 211 along the tooth grooves, so that the container cover 211 is prevented from being released from the rotating head 10 in the closing operation. In fig. 4, the rotating sleeve 11 may be elastically connected to the rotating shaft directly or indirectly by using a spring connection 23, so that the rotating sleeve 11 may be flexibly clamped into the container cover 211, thereby minimizing abrasion of the rotating sleeve 11 to the container cover 211, and avoiding sample contamination and other risks caused by plastic scraps generated by scratching the container cover 211 to the maximum extent, and the basic functions of the rest parts are similar to those of fig. 3, and are not repeated herein.
In order to ensure the efficient execution of the cover opening and closing operation, the number of the rotating heads 10 is N, wherein N is an integer greater than 2, as shown in the figure, the N is 8, the cover opening and closing operation of 8 sample containers 21 is realized, the rotating heads 10 are directly or indirectly connected with the rotating shafts 17 and the linkages 16, the linkages 16 of the N rotating heads 10 are arranged in a row, the second driving part 7 is directly or indirectly meshed with the linkages 16 through the driving gears 9 connected to the driving shafts, and the second driving part 7 outputs driving force, which can be arranged to directly mesh with the two linkages 16 by the driving gears 9 connected thereto, so as to realize the effect of directly driving the two adjacent rotating heads 10 to move synchronously, so that the stress moment of each driving part in the system is smaller, the reliability of the cover opening and closing device operation is greatly increased, a transmission assembly with higher precision and strength is not required to be set, the second driving parts 7 are two and are both rotary motors, the power for opening and closing the cover assembly is output jointly, so that the two second driving parts 7 can directly drive the 4 rotating heads 10 to move synchronously, each rotary motor in the system is ensured that the reliability of the rotating motor is smaller, the switch mechanism is also required to be set and the higher transmission mechanism is also increased. The rotating structure further comprises a transmission gear 19, the transmission gear 19 is arranged between the linkages 16, so that the four linkages 16 which are left and not directly meshed with the driving gear 9 can be synchronized, the synchronous rotating effect that all N rotating heads 10 can run in the same rotating direction and the same rotating speed at the same time under the driving of the second driving part 7 is achieved, a plurality of sample containers 21 can be simultaneously and reliably opened and closed, the synchronous opening and closing cover operation of the sample containers 21 obtained by batch production only have the synchronous opening and closing cover operation under the tiny difference can be adapted, the idle operation allowed by the elastic element is matched, and the reliability of batch operation is guaranteed. In order to reduce the rotating speed and increase the torque to meet the requirement of the rotating work, the output shaft of the second driving part 7 is connected with a speed reducer 8, and the output shaft of the speed reducer 8 is directly or indirectly meshed and connected with a linkage 16 and/or a transmission gear 19 through a driving gear 9. In this embodiment, the gear box for loading the rotating structure, the sliding block 6 and the limiting blocking piece 13 may be integrally disposed. In order to detect the execution of the cover opening and closing operation, the lifting frame 1 is further provided with a sensor 14, and the sensor 14 is arranged opposite to the rotating head 10 in the horizontal direction. The device is used for detecting whether the rotating head 10 is screwed with the container cover 211 and whether the container cover 211 is screwed with the container body 210 in the process of rising after the cover is opened; after closing the cover, the mechanism resets whether the rotary head 10 is screwed with the cover 211. In this embodiment, the sensors 14 may be photoelectric sensors, the number of the photoelectric sensors corresponds to the number of the rotating heads 10, and the N sensors 14 are arranged in a row, fixed on the lifting frame 1 by screws and connected with the controller, and feed back the acquired signals to the controller.
Fig. 5 illustrates a schematic view of a sample container 21, which may be a saliva sampling tube with a cover, a whole blood sampling tube, a fecal sampling tube such as urine, a sliced sample collecting tube such as animal and plant tissue epidermis, etc., in one case it may be a collecting tube such as a throat swab, a nose swab, an anal swab, etc., it may be a single swab sampling tube, or it may be 5: 1. 10: 1. 20:1, and the like, and further the container body 210 of the sample container 21 may include an identification code, such as a barcode, a two-dimensional code, an FRID, and the like, which is used for object information acquisition, experiment database establishment, and the like, and a workflow description is performed by taking a commonly used detection sample container 21 as an example. The sample container 21 includes a container body 210 and a container cover 211. The bottom of the container body 210 is provided with a base 212, the container body 210 and the container cover 211 are screwed, the upper end of the container cover 211 is provided with a groove, the groove is provided with an internal thread screwed with the rotating head 10, and the internal thread can be used as a connecting part of a rotating shaft or an auxiliary mechanical arm and the like in the production process of the container cover 211. The screwing direction of the container cover 211 and the container body 210 is opposite to the screwing direction of the container cover 211 and the rotating head 10, so that the rotating head 10 can realize the unscrewing of the container cover 211 and the container body 210 by rotating along the same direction after the rotating head 211 is connected with the container cover 211 in a rotating mode, the screwing and unscrewing process is also suitable for the screwing and closing process, and the container cover 211 can be reliably closed or separated through the rotation in different directions. The sample container 21 is loaded on the sample rack 22 shown in fig. 6, the bottom of the sample rack 22 is provided with a loading hole 220 matched with the base 212 for fixing the container body 210, of course, the sample rack 22 can be further provided with a ribbed bearing part matched with the base 212, so that the sample container 21 can be fixed during the process of opening and closing the cover, the reliability of the opening and closing of the cover is ensured, further, a sensor, such as an optoelectronic type or mechanical type sensor, can be arranged in the sample rack 22 for indicating whether the sample container 21 in the sample rack 22 is correctly installed in place, and of course, an elastic fixing element can be further arranged in the sample rack, so that the fixing of the sample container 21 with different diameters of the container body 210 can be adapted.
As will be described in detail below with reference to fig. 7 to 11, in the operation flow of opening and closing the cover of the sample container 21, before the experiment begins, the operator inserts the sample container 21 in the closed state into the loading hole 220 of the sample rack 22 and pushes the sample rack 22 into the sample bin from the entrance of the sample bin, the process of adding the sample container 21 and pushing the sample container into the sample bin can also be implemented by full automation, and when the sample container 21 is inserted into the corresponding loading hole 220, the sensor can indicate whether the sample is loaded correctly and can transmit a corresponding signal to the controller, so as to allow the machine to operate in saturation or non-saturation.
At the beginning of the experiment, as shown in fig. 7, when the sample rack 22 is horizontally moved to a predetermined position, the spin head 10 is vertically opposite to the container cover 211. The first driving part 3 is electrified to drive the screw rod 4 to drive the cap screwing assembly to descend along the vertical guide rail 5, when the rotating head 10 descends to be in contact with the container cover 211 or has a preset gap which can be 0-15 mm away from the top of the container cover 211, the second driving part 7 drives the driving gear 9 to rotate and the transmission gear 19 of the linkage 16 directly or indirectly meshed and connected with the driving gear to be driven to rotate, so that all N linkage 16 rotate, the rotating head 10 sleeved on the rotating shaft 17 is driven to descend and rotate anticlockwise at the same time until the rotating head 10 is screwed with the groove of the container cover 211. Because the buffer 20 is arranged in the rotary head 10, when the thread matching failure of one rotary head 10 and the groove of the container cover 211 occurs, the rotary head 10 is allowed to idle for a plurality of circles until the rotary head is screwed with the groove of the container cover 211, when a part of the sample containers 21 are correctly connected, the container cover 211 which is not connected in place continues to complete in-place connection through the continuous rotation driving of the second driving part 7, and the correctly connected container cover 211 can generate a state similar to slipping under the action of the buffer 20 at the moment, so that each rotary head 10 can be reliably and in-place connected. Since the base 212 of the container body 210 is fixed in the loading hole 220 of the sample rack 22, the container body 210 does not rotate together with the container cover 211. Since the container cover 211 is opposite to the container body 210 and the rotating head 10, respectively, and continues to rotate counterclockwise as shown in fig. 8 and 9 until the container cover 211 is separated from the container body 210, the screwing cap assembly of fig. 8 adopts the flexible connection structure of fig. 4, that is, the rotating sleeve 11 and the rotating shaft 17 do not adopt a fixed connection scheme of pins and the like, but adopt a connection mode of elastic relative sliding, so as to ensure that the rotating sleeve 11 does not generate excessive scratches on the container cover 211, further, a clamping structure 24 of the container cover 211 is also included outside the rotating head 10, the container cover 211 screwed with the rotating head 10 can be clamped, the clamping structure 24 includes an elastic element and a segment 241 directly or indirectly connected with the elastic element, when the rotating head 10 is connected with the container cover 211, the segment 241 can at least partially contact with the container cover 211, so as to realize a clamping effect on the container cover 211, wherein the segment 241 can be a ball, a cylindrical ball, a conical ball, a hollow ball or the like, and the clamping structure 24 can reliably clamp the container cover 211 so as to ensure that the container cover 211 can be clamped by mechanical force (wherein the elastic element can not be reliably clamped with the rotating head 211 and the container cover 211 can be connected with the rotating head 211, and the container cover 211 can not be reliably connected with the rotating head 211, and the rotating head 211, so as to ensure that the container cover 211 can be connected with the rotating head 211 can not be reliably connected with the rotating head 211 can be reliably. The screw cap assembly of fig. 9 adopts the fixing connection scheme of the pin and the like of fig. 3, and details are not repeated here. After the sample container 21 is completely separated from the container cover 211, the second driving part 7 may stop rotating, and the first driving part 3 drives the screw rod 4 to drive the cap screwing assembly to ascend along the vertical guide rail 5. When the container rises to the first set position (as shown in fig. 10), the sensor 14 emits light, which is reflected by the container cover 211, and then receives and feeds back a signal to the controller, and the experiment continues; if one of the sensors 14 cannot receive the reflected light, it is determined that the cover opening fails, and a signal is fed back to the controller to remind an operator to stop the experiment, or to perform a new cover opening step by itself to attempt to open the container cover 211 again. When the information of cap opening failure does not exist, the cap screwing component continuously rises to the second set position, if the container body 210 is brought up together with the container cover 211 (as shown in fig. 11), the light emitted by the sensor 14 is reflected by the container body 210 and then received and fed back to the controller, so as to remind an operator of cap opening failure; if the operation is normal, when the cap screwing assembly continues to ascend to the limiting blocking piece 13 to trigger the limiting stopper 12, the cap opening and closing mechanism stops working, the cap opening process is finished, the cap 211 is screwed on the rotating head 10 at the moment, the sample rack 22 can carry the sample container 21 without the cap to other positions to complete pipetting or other experimental operations, and therefore the internal threads of the cap 211 are fully utilized.
After the corresponding operation is completed, a cover closing operation step may be performed. At this time, all the sample containers 21 are in an open-cover state, and the bases 212 of the container bodies 210 are inserted into the loading holes 220 of the sample rack 22. When the sample rack 22 is horizontally moved to a predetermined position, the cover 211 is vertically opposite to the container body 210. The first driving portion 3 is powered on to drive the screw rod 4 to drive the cap screwing assembly to descend along the vertical guide rail 5, when the container cover 211 descends to contact the container body 210, the second driving portion 7 drives the transmission gear 19 to rotate, the transmission gear 19 drives the gear set engaged with the transmission gear to rotate, and therefore the rotating head 10 sleeved on the rotating shaft 17 is driven to descend and rotate clockwise until the container cover 211 is screwed with the container body 210, as shown in fig. 12. Because the buffer member 20 is provided in the rotary head 10, the anti-slip pattern on the outer edge of the container cover 211 is forced to be clamped into the tooth grooves of the rotary sleeve 11 by the upward reaction force, so as to prevent the container cover 211 from loosening. Since the container cover 211 is opposite to the container body 210 and the spin head 10, and the container body 210 is fixed and does not rotate together with the container cover 211, the container cover 211 is tightly covered on the container body 210 and separated from the spin head 10 when the clockwise rotation is continued. The first driving part 3 drives the screw rod 4 to drive the cap screwing assembly to ascend along the vertical guide rail 5. When the cover is lifted to the first set position, if the cover 211 is brought up together with the rotary head 10, the sensor 14 emits light which is reflected by the cover 211 and then feeds back a signal to the controller, so as to remind an operator that the cover closing fails, and the cover opening and closing mechanism can also perform a secondary cover closing attempt; if the cover screwing assembly works normally, when the cover screwing assembly continues to ascend to the limiting blocking piece 13 to trigger the limiting stopper 12, the cover opening and closing mechanism stops working, and the cover closing process is finished.
The principles and embodiments of the present invention are explained herein using specific examples, which are set forth only to facilitate an understanding of the principles and core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Claims (10)
1. A rotary switch cover mechanism is applied to a sample container comprising a container body and a container cover, and is characterized by comprising a rotary cover assembly, a rotary switch cover and a rotary switch cover, wherein the rotary cover assembly is used for driving the container cover to rotate relative to the container body and is screwed on or off the container body; the lifting component is connected with the cap screwing component and is used for driving the cap screwing component to at least complete vertical movement; the cap screwing assembly comprises a rotating head provided with an external thread structure, the external thread structure can be matched and connected with internal threads of a container cap of the sample container which is subjected to cap opening and closing, and the container cap is driven to rotate anticlockwise or clockwise by anticlockwise or clockwise rotation, so that the container cap can be opened or closed tightly.
2. The rotary lid mechanism according to claim 1, wherein the lifting assembly comprises a first drive for powering the lifting assembly; the cap screwing component also comprises a second driving part which is used for providing power for the anticlockwise or clockwise rotation of the rotating head.
3. The rotary switch cover mechanism of claim 1, wherein the number of rotating heads is N, where N is an integer greater than 2.
4. The rotary switch cover mechanism according to claim 3, wherein the rotary head is directly or indirectly connected to a linkage, and the second driving part is directly or indirectly connected to the linkage through a driving part connected to a driving end of the second driving part, so that the second driving part drives the rotary head to rotate counterclockwise or clockwise.
5. The rotary switch cover mechanism as claimed in claim 1, wherein said rotary cover assembly further comprises a rotary sleeve disposed outside said rotary head, and the inner wall of the lower edge and/or near the lower edge of said rotary sleeve is provided with splines capable of fitting with the anti-slip threads on the container cover for preventing the container cover from being released from said rotary head.
6. The cover rotating and opening mechanism according to claim 1, wherein a buffer member is included between the second driving portion and the rotating head for buffering the container cover during the process of rotating and opening or closing the container cover.
7. The cover rotating switch mechanism of claim 3, wherein the second driving portion is capable of driving all N of the rotating heads to operate at the same time and in the same rotational direction and at the same rotational speed.
8. The rotary lid mechanism according to claim 1, wherein the screw lid assembly further comprises a container lid engaging structure disposed outside the rotary head, capable of engaging a container lid threadably engaged by the rotary head.
9. The rotary switch cover mechanism of claim 8, wherein said snap-fit structure comprises a resilient member and a segment directly or indirectly connected thereto, wherein at least a portion of said segment is capable of contacting said cover when said cover is connected to said rotary head to effect a snap-fit action with respect to said cover.
10. The rotary switch cover mechanism of claim 1, wherein the lifting assembly further comprises a lifting frame and a lead screw, the first driving part is connected with the lifting frame, and the lead screw passes through the first driving part and is connected with the screw cover assembly.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211017823.6A CN115321450A (en) | 2022-08-23 | 2022-08-23 | Rotary switch cover mechanism |
| PCT/CN2023/114200 WO2024041517A1 (en) | 2022-08-23 | 2023-08-22 | All-in-one machine for sample detection, and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211017823.6A CN115321450A (en) | 2022-08-23 | 2022-08-23 | Rotary switch cover mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115321450A true CN115321450A (en) | 2022-11-11 |
Family
ID=83926025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211017823.6A Pending CN115321450A (en) | 2022-08-23 | 2022-08-23 | Rotary switch cover mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115321450A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041517A1 (en) * | 2022-08-23 | 2024-02-29 | 西安天隆科技有限公司 | All-in-one machine for sample detection, and control method therefor |
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