CN115741827A - Automatic stripping off device of nucleic acid sampling throat swab - Google Patents
Automatic stripping off device of nucleic acid sampling throat swab Download PDFInfo
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- CN115741827A CN115741827A CN202211314114.4A CN202211314114A CN115741827A CN 115741827 A CN115741827 A CN 115741827A CN 202211314114 A CN202211314114 A CN 202211314114A CN 115741827 A CN115741827 A CN 115741827A
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Abstract
The invention discloses a nucleic acid sampling throat swab automatic stripping device, which relates to the field of nucleic acid detection assistance and mainly comprises a power and transmission unit, a feeding area feeding unit, a swab dividing unit, a chamber cavity feeding unit, an ejection unit, a target swab feeding and detecting unit and a swab packaging and shearing unit. The design space of the feeding area is enough for placing dozens of plate swabs, and a discharge hole of the feeding area is fixed with a soft glass baffle to prevent the multiple plate swabs from being sent out simultaneously. After the single-plate swabs are divided one by one, the single swabs are conveyed to the discharge port of the ejection unit one by one in the feeding area in the chamber cavity, and the feeding position is sensed by two photoelectric sensors in the chamber cavity and fed back to the feeding transmission unit. The swab packaging and shearing unit is provided with an automatic shear for shearing the tail part of the swab outer packaging bag, and the target swab sending-out unit is provided with a hole opening baffle for separating the swab from the packaging bag. By the automatic stripping device, the infection of a nucleic acid sampling person can be reduced, and the risk of cross infection with the person to be sampled is reduced.
Description
Technical Field
The invention relates to the field of nucleic acid detection assistance, in particular to an automatic stripping device for a nucleic acid sampling throat swab.
Background
At present, the new coronavirus is wrapped around the world and used as the most main means for screening people related to the new coronavirus and determining the diagnosis state of a discriminator, and nucleic acid detection has a considerable diagnostic value. The existing nucleic acid sampling mainly depends on the manual operation of medical staff, and the sampling efficiency is difficult to reach an ideal condition. The method has the advantages that the universality and the repeatability of nucleic acid detection are considered, mechanization and automation are realized to a certain degree, and the method has important significance for releasing manpower and improving sampling efficiency.
The swab used for nucleic acid sampling at present is mainly a medical ABS plastic rod, and has the advantage of difficult damage when being used for a mechanical operation process. Meanwhile, as an initial link of nucleic acid sampling, the realization of repeated swab stripping automation is high. In view of this, the present invention focuses on the swab stripping process in nucleic acid sampling, and aims to strip the swab from the packaging bag quickly and accurately, so as to facilitate the subsequent nucleic acid sampling operation.
Disclosure of Invention
The invention aims to improve the efficiency and the accuracy of swab stripping in the nucleic acid collection process, and provides an automatic stripping device for a nucleic acid sampling throat swab, so as to solve the problems in the background.
In order to achieve the above object, the present invention is mainly achieved by the following technical solutions:
a nucleic acid sampling throat swab automatic stripping device comprises a power and transmission unit, a feeding area feeding unit, a swab dividing unit, a chamber cavity feeding unit, an ejection unit, a target swab sending and detecting unit, a swab packaging and cutting unit, a base and a shell;
the power and transmission unit takes the servo motor as a power source and completes power transmission among the rotating shafts through the circular belt;
the feeding unit of the feeding area feeds materials through the friction force between the rubber wheel arranged on the rotating shaft and the swab packaging bag, the inclined baffle and the soft glass baffle separate the swabs in a position difference manner, and a height space slightly higher than that of a single-plate swab is reserved at the bottom of the baffle, so that the single-plate swab is ensured to smoothly pass through the feeding area to enter the chamber, and the multiple-plate swab does not pass through the feeding area;
the swab dividing unit realizes the cutting action of the blade through a cam mechanism;
the ejection unit controls the sliding block to complete ejection action along the guide pillar through the electric push rod;
the target swab sending and detecting unit realizes the change of the feeding direction through the ejection unit, sends the target swab through the friction of a rubber wheel in a target area, and detects the position of the target swab through a photoelectric sensor;
the swab packaging and cutting unit drives the movable block to move linearly through the fourth servo motor so as to control the opening and closing of the scissors and complete the cutting action of the swab package; subsequently, the swab is stripped of the remaining swab package by means of a rubber wheel and a perforated baffle;
when the device works, the first servo motor works to enable the feeding unit at the bottom of the first servo motor to send out the bottom plate-shaped swabs, and simultaneously, the cam shaft is driven by the circular belt to synchronously rotate so as to enable the special cam cutter to divide the plate-shaped swabs; after the swabs reach the designated positions, the second servo motor works to firstly send out the swabs at the discharge port, and send out the target swabs through the target swab sending-out and detecting unit and the swab packaging and shearing unit, and after the completion, the third servo motor works to send the divided residual swabs to the discharge port one by one, so that the separation and sending-out of the swabs in the whole plate are completed.
The feeding unit of the feeding area is provided with a space for placing dozens of swabs, a discharge port baffle of the feeding unit of the feeding area is designed to be an inclined baffle, a soft glass baffle is fixed above a discharge port, friction force is increased to ensure that single discharge is one swab, a first servo motor provides power to drive a rubber wheel on a first transmission shaft of the feeding area and a second transmission shaft of the feeding area to rotate, and the plate-shaped swabs above the driving of the friction force enter a swab segmentation unit.
The swab segmenting unit comprises: the cam shaft, the cam cutter, the spring, the sleeve, the spring fixing plate and the cutter rotating shaft are arranged on the cam shaft; the working power of the cam cutter is provided by a first servo motor, the cam cutter is rigidly connected with a first driving shaft through the first servo motor, and the first driving shaft is connected with the cam shaft through a circular belt.
The motion modes of the chamber feeding unit are divided into transverse feeding and longitudinal feeding; the transverse feeding power is provided by the second servo motor and is transmitted to the chamber cavity transmission shaft through a second driving shaft; a rubber wheel above the feeding platform provides an auxiliary effect in the transverse feeding; the feeding unit in the chamber cavity is provided with a photoelectric sensor for position detection at the position close to the side plate of the discharge hole: a first photosensor and a second photosensor; horizontal pay-off power is provided by third servo motor, through with third driving shaft rigid connection, utilizes the first transmission shaft of horizontal pay-off of circle area drive and the epaxial two sets of rubber wheels of horizontal pay-off secondary drive to rotate, the rubber wheel is a little higher than feeding platform.
The rubber wheel in the ejection unit moves up and down through the rocker-slider mechanisms on the two sides; the rocker-slider mechanism comprises a slider, a rocker and a connecting rod movable rod; the rocker-slider mechanism drives the slider to move up and down through the electric push rod, so that the connecting rod swings to drive the rubber wheel to move up and down; through holes reserved according to the moving track of the connecting rod are formed in the fixed plates on the two sides of the rocker sliding block mechanism.
The target swab sending and detecting unit passes through the chamber cavity feeding unit, the second servo motor drives the second driving shaft and the chamber cavity transmission shaft to send out a single swab from the feeding port, the swab is detected by the third photoelectric sensor below the discharging port, when the swab packaging tail part is sent out from the discharging port to reach a designated position, the swab packaging tail part is cut by the swab packaging cutting unit, and the second servo motor continues to work to continuously send out the swab in the direction of the discharging port; the target swab sending and detecting unit is fixed with a hole-opening blocking sheet for assisting in stripping the swab package outside the discharge hole.
The swab packing and shearing unit is characterized in that: the scissors are composed of scissors, a fourth servo motor, a scissors limiting module and a movable block, wherein the linear movement of the movable block is provided by a screw nut mechanism driven by the fourth servo motor, the movable block moves inwards to close the scissors and opens the scissors outwards.
The width of the hole of the opening blocking piece is smaller than that of the swab outer package; the opening blocking piece and the discharge hole are kept at a certain distance, so that the stripped swab outer package can freely fall into a swab packaging collecting tank below.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
1. the feeding area has large capacity, can contain multiple swabs (six swabs per plate), and the feeding amount can reach at least more than six times of that of a common swab stripper.
2. The swab pre-separating baffle can control the swab feeding amount before entering the chamber, friction force between the baffle made of soft glass materials and the swabs of each plate is increased, and the situation that the machine is subsequently jammed due to the fact that the multiple plates of swabs are simultaneously fed into the chamber can be better prevented.
3. The swab cutting unit finishes cutting action through the cam mechanism, and the cam shaft is connected with the rubber wheel driving shaft in the feeding area through the circular belt, so that additional cutting power setting is omitted.
4. After the swabs in the feeding area are transversely fed to designated positions in the chamber cavity through the rubber wheels, the electric push rod controls the slide block to upwards complete ejection actions along the guide posts, the swabs are conveyed to the longitudinal feeding area from the transverse feeding area, interference among all links can be further reduced by area division, and misoperation of the system is avoided.
5. The swab packaging and cutting unit is arranged, the short handles of the scissors are limited in the limiting module through the limiting shaft, the short handles of the scissors are driven to be opened and closed through the transverse action of the fourth servo motor control module, and the scissors cut the tail of the swab packaging. The more complex scissors action control is converted into the more easily realized module linear displacement action control, and the realizability of the system is improved.
6. Besides the function of carrying swabs, the rubber wheel in the discharging area can ensure that the target swabs can be sent out in a proper pose by the limiting grooves on the wheel.
7. The opening blocking piece fixed on the outer side of the discharge hole of the target swab sending and detecting unit controls the opening width of the opening blocking piece to be smaller than the swab packaging width, so that residual packaging of the swab can be blocked in the swab carrying process, and the functions of separating the swab and packaging can be easily realized.
8. In the working process of the device, the swab head is not in direct contact with any structure in the device, so that the sample is prevented from being polluted by the environment.
Drawings
FIG. 1 is a schematic view of the overall structure of the swab stripping device of the present invention.
FIG. 2 is a schematic view of a pre-separation baffle in a swab stripping apparatus.
FIG. 3 is a schematic view showing the structure of a dividing unit in the swab detaching device.
Fig. 4 is a schematic structural diagram of an ejection mechanism in the swab stripping device.
FIG. 5 is a schematic view of the structure of the packaging and cutting unit in the swab-stripping device.
In the figure:
100. a feeding area; 110. an inclined baffle plate; 120. a soft glass baffle;
200. a side plate;
310. a second transmission shaft of the feeding area; 320. a first transmission shaft of the feeding area; 330. a first servo motor; 340. a first drive shaft; 350. a camshaft; 360. a cam cutter; 370. a spring; 380. a sleeve; 390. a spring fixing plate; 3100. a first driven shaft;
400. a handle;
510. a base; 520. packaging and collecting the swab;
610. a first photosensor; 620. a second photosensor;
700. a chamber cavity; 710. a slider; 720. a guide post; 730. an electric push rod; 740. a guide sleeve; 750. a support plate; 760 a third servomotor; 770. a third driving shaft; 780. a transverse transmission plane first transmission shaft; 790. a transverse transmission plane second transmission shaft; 7100. a movable rod; 7110. a rubber wheel; 7120. a rocker; 7130. a connecting rod;
810. a chamber inner transmission shaft; 820. a second driving shaft; 830. a fourth servo motor; 840. a scissors limit module; 850. a movable block; 860. scissors; 870. a third photosensor; 880. a tapping baffle plate; 890. a second driven shaft; 8100. a rubber wheel; 8110. a second servo motor.
Detailed Description
In order to clearly show the technical features and advantages of the present application, the present application will be described in detail with reference to the accompanying drawings and embodiments, and it should be noted that all the orientations and positional relationships indicated by "first", "second", "third", "fourth", "transverse", "longitudinal", "inner", "outer", and the like in the present application are based on the orientations and positional relationships indicated by the drawings, and are only for the purpose of making the description of the present application clearer, and do not mean that the device or the element necessarily has a definite orientation limit, and therefore, the present application is not limited thereto.
As shown in fig. 1-5, the automatic throat swab stripping device for nucleic acid sampling provided by the present invention mainly comprises a power and transmission unit, a feeding unit of a feeding area, a swab dividing unit, a feeding unit in a chamber, an ejecting unit, a target swab feeding and detecting unit, and a swab packaging and dividing unit. Wherein:
the first driving shaft 340 rotates through the first servo motor 330, and the first transmission shaft 320 of the feeding area and the first driving shaft 340, and the second transmission shaft 310 of the feeding area and the first transmission shaft 320 of the feeding area are all driven by circular belts, so that the rotation of the first driving shaft 340 can sequentially drive the first transmission shaft 320 of the feeding area and the second transmission shaft 310 of the feeding area.
In some embodiments, multiple swabs (six per plate) are fed into the loading zone 100, separated by a head difference by the pre-separation baffle 110 and the soft glass baffle 120, and the lowest row of swabs is fed through the gap under the plates to the swab splitting unit under the frictional drive of the first drive shaft 320 and the second drive shaft 310.
Further, the first driving shaft 340 and the cam shaft 350 are driven by a circular belt, and the cam cutter 360 is in direct contact with the cam shaft 350 to form a cam mechanism. The tail part of the cutter is connected with a spring fixing plate 390 through a spring 370, and the cutter tip part is fixed on a first driven shaft 3100, and can realize the rotation around the shaft.
In some embodiments, the rotational motion of the camshaft 350 urges the tool to complete a rotational motion about the first follower shaft 3100. The single plate swab is repeatedly cut and separated by a cutter in the gap between the first driving shaft 340 and the first driven shaft 3100, and then enters the chamber. At this time, the second main shaft 700 starts to operate by the second servo motor 8110. In addition, the second driving shaft 820 and the chamber transmission shaft 810 are driven by a circular belt, and when the swab end is conveyed to the chamber limit baffle 8120 by the chamber transmission shaft 810, the first servo motor 330 stops working.
In some embodiments, the first photosensor 610 and the second photosensor 620, upon detecting the presence of the rightmost swab, are driven by the electric push rod 730 to move the slider 710 down the guide post 720, and the downward movement of the slider 710 moves the movable rod 7100 downward via the rocker-slider mechanism until the rubber wheel 7110 of the movable rod 7100 comes into contact with the surface of the swab package. The swab is frictionally carried by the chamber drive shaft 810 and the rubber wheel 7110 through the gap of the chamber limit stop 880 through the second driven shaft 890 to the swab packaging cutting unit.
Further, the scissors are initially in an open state, the second servo motor 8110 drives the second driving shaft 820, when the third photoelectric sensor detects that the swab package reaches a specified position, the movable block 850 in the swab package cutting unit slides inwards along the guide rail under the action of the fourth servo motor 830, the blades of the scissors complete a closing action, and the package is smoothly cut and falls into the package collecting tank 520. Subsequently, the movable block 850 in the swab packaging and cutting unit slides outward along the guide rail again by the fourth servo motor 830, and the scissors complete the opening action for further advancing the swab.
In some embodiments, the swab to be cut is further moved forward by the friction of the rubber wheel 8100 on the second driving shaft 820 and the second driven shaft 890, the swab is stopped after the swab package contacts the opening blocking piece 880, the swab is further sent out, the swab is taken off, and the rest of the swab package falls into the package collecting groove 520, so that a right-end swab peeling process is completed.
In some embodiments, in the event that the first photosensor 610 and the second photosensor 620 do not detect the presence of the rightmost swab, the slider 710 is driven by the power pusher 730 to move up the guide post 720, and the remaining individual swabs are transported from the transverse plane of motion to the longitudinal plane of motion. At this time, the third driving shaft 770 is driven by the third servo motor 760 to perform a rotational motion, and the third driving shaft 770 drives the first horizontal transmission plane transmission shaft 780 and the second horizontal transmission plane transmission shaft 790 to perform a rotational motion simultaneously via the circular belt. Under the friction of the rubber wheels on the first transmission shaft 780 and the second transmission shaft 790, another swab is sent to the rightmost end, and when the first photoelectric sensor 610 and the second photoelectric sensor 620 detect the existence of the swab, the package cutting operation is repeatedly completed.
Further, after all swabs in the chamber cavity are completely packaged and separated, the first servo motor 340 enters the working state again, the swab on the lowest plate in the loading area is separated by the pre-separation baffle 110 and the soft glass baffle 120 and enters the working area, and the above work is repeatedly completed, and the above steps are repeated until all swabs are packaged and separated.
The above description of the work flow of the present invention with reference to the accompanying drawings is only for illustrative purposes, and it is to be understood that the present invention is not limited to the above description, and those skilled in the art may modify, substitute or modify the embodiments of the present invention, and all the modifications and changes that use the technical solutions and methods of the present invention without innovative changes or directly carrying out the technical solutions and methods of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A throat swab automatic stripping device for nucleic acid sampling comprises a power and transmission unit, a feeding area feeding unit, a swab dividing unit, a chamber cavity feeding unit, an ejection unit, a target swab sending and detecting unit, a swab packaging and shearing unit, a base and a shell, wherein the power and transmission unit is connected with the swab packaging and shearing unit; the method is characterized in that:
the power and transmission unit takes the servo motor as a power source and completes power transmission among the rotating shafts through the circular belt;
the feeding unit of the feeding area feeds materials through the friction force between the rubber wheel arranged on the rotating shaft and the swab packaging bag, the position difference separation is carried out on the swabs of multiple plates through the inclined baffle (110) and the soft glass baffle (120), and a height space slightly higher than that of the single plate swab is reserved at the bottom of the baffle, so that the single plate swab is ensured to smoothly pass through the feeding area to enter the chamber, and the multiple plate swabs do not pass through;
the swab segmenting unit realizes the cutting action of the blade through a cam mechanism;
the ejection unit controls the sliding block (710) to complete ejection action along the guide post (720) through the electric push rod (730);
the target swab sending and detecting unit realizes the change of the feeding direction through the ejection unit, sends the target swab through the friction of a rubber wheel in a target area, and detects the position of the target swab through a photoelectric sensor;
the swab packaging and cutting unit drives the movable block (850) to move linearly through the fourth servo motor (830) so as to control the opening and closing of the scissors (860) and complete the cutting action of the swab packaging; subsequently, the swab is stripped of the swab remainder packaging by a rubber wheel (8100) and a punch baffle (880);
when the device works, the first servo motor (330) works to enable the feeding unit at the bottom of the first servo motor to send out the bottom plate-shaped swabs, and simultaneously, the cam shaft (350) is driven by the circular belt to synchronously rotate so as to enable the special cam cutter (360) to cut the plate-shaped swabs; after the swabs reach the designated positions, the second servo motor (8110) works to firstly send out the swabs at the discharge port, and send out the target swabs through the target swab sending-out and detecting unit and the swab packaging and shearing unit, and after the completion, the third servo motor (760) works to send the divided residual swabs one by one to the discharge port, so that the separation and sending-out of the swabs in the whole plate are completed.
2. The automatic nucleic acid sampling throat swab stripping device according to claim 1, wherein: the feeding unit of the feeding area is provided with a space for placing dozens of swabs, the baffle of the discharge port of the feeding unit of the feeding area is designed into an inclined baffle (110), a soft glass baffle (120) is fixed above the discharge port, friction force is increased to ensure that single discharge is one swab, a first servo motor (330) provides power to drive rubber wheels on a first transmission shaft (320) of the feeding area and a second transmission shaft (310) of the feeding area to rotate, and the plate-shaped swabs above the driving unit of the larger friction force enter a swab segmentation unit.
3. The automatic stripping device for nucleic acid sampling throat swab according to claim 1, wherein: the swab segmenting unit includes: the cam shaft (350), the cam cutter (360), the spring (370), the sleeve (380), the spring fixing plate (390) and the cutter rotating shaft (3100); the working power of the cam cutter (360) is provided by a first servo motor (330), the cam cutter is rigidly connected with a first driving shaft (340) through the first servo motor (330), and the first driving shaft (340) is connected with the cam shaft (350) through a circular belt.
4. The automatic nucleic acid sampling throat swab stripping device according to claim 1, wherein: the motion modes of the feeding unit in the chamber cavity are divided into transverse feeding and longitudinal feeding; the transverse feeding power is provided by the second servo motor (8110) and is transmitted to the chamber cavity transmission shaft (810) through a second driving shaft (820); a rubber wheel (7110) above the transverse feeding middle feeding platform provides an auxiliary effect; the feeding unit in the chamber cavity is provided with a photoelectric sensor for position detection at the position close to the side plate of the discharge hole: a first photosensor (610) and a second photosensor (620); the transverse feeding power is provided by a third servo motor (760), two groups of rubber wheels on a transverse feeding first transmission shaft (780) and a transverse feeding second transmission shaft (790) are driven to rotate by a circular belt through rigid connection with a third driving shaft (770), and the rubber wheels are slightly higher than the feeding platform.
5. The automatic stripping device for nucleic acid sampling throat swab according to claim 1, wherein: the rubber wheel (7110) in the ejection unit moves up and down through a rocker-slider mechanism on two sides; the rocker-slider mechanism comprises a slider (710), a rocker (7120) and a connecting rod (7130) movable rod (7100); the rocker sliding block mechanism drives the sliding block to move up and down through the electric push rod (730), so that the connecting rod (7100) swings to drive the rubber wheel (7110) to move up and down; through holes reserved according to the moving track of the connecting rod (7100) are formed in the fixed plates on the two sides of the rocker sliding block mechanism.
6. The automatic stripping device for nucleic acid sampling throat swab according to claim 1, wherein: the target swab sending and detecting unit sends a single swab out of the feeding port through the chamber cavity feeding unit and the second servo motor (8110) drives the second driving shaft (820) and the chamber cavity transmission shaft (810) to detect the single swab through the third photoelectric sensor (870) below the discharging port, when the swab packaging tail reaches a specified position after being sent out of the discharging port, the swab packaging and shearing unit shears the swab packaging tail, and the second servo motor (8110) continues to work and continuously sends the swab out in the direction of the discharging port; the target swab sending and detecting unit is fixed with a hole blocking sheet (880) for assisting in stripping the swab package outside the discharge hole.
7. The automatic nucleic acid sampling throat swab stripping device according to claim 1, wherein: the swab packing and shearing unit is characterized in that: the scissors are composed of scissors (860), a fourth servo motor (830), a scissors limiting module (840) and a movable block (850), wherein the linear movement of the movable block (850) is provided by a screw-nut mechanism driven by the fourth servo motor (830), the movable block (850) moves inwards to close the scissors (860), and the movable block (850) opens the scissors (860) outwards.
8. The automatic nucleic acid sampling throat swab stripping device according to claim 1, wherein: the aperture stop (880), the aperture width being less than the swab outer package width; the opening blocking piece and the discharge port are kept at a certain distance so as to enable the stripped swab outer package to freely fall into a swab package collecting tank (520) below.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211314114.4A CN115741827A (en) | 2022-10-25 | 2022-10-25 | Automatic stripping off device of nucleic acid sampling throat swab |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211314114.4A CN115741827A (en) | 2022-10-25 | 2022-10-25 | Automatic stripping off device of nucleic acid sampling throat swab |
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| CN115741827A true CN115741827A (en) | 2023-03-07 |
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| CN202211314114.4A Pending CN115741827A (en) | 2022-10-25 | 2022-10-25 | Automatic stripping off device of nucleic acid sampling throat swab |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116280561A (en) * | 2023-04-26 | 2023-06-23 | 北京铸正机器人有限公司 | Swab stripping device and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116280561A (en) * | 2023-04-26 | 2023-06-23 | 北京铸正机器人有限公司 | Swab stripping device and method thereof |
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