A throat swab sampling and recycling machine

Abstract

The present invention relates to the technical field of pharyngeal swab sampling and recovery equipment, and specifically relates to a pharyngeal swab sampling and recovery machine, which is provided with a chassis. A pharyngeal swab cotton swab insertion port is provided on the side of the chassis. It is characterized in that a pharyngeal swab cotton swab conveying mechanism, a test tube conveying mechanism, a cotton swab head shearing mechanism for the pharyngeal swab cotton swab, a test tube cap opening mechanism, a cotton swab stick ejection mechanism and a test tube positioning and ejection mechanism are provided inside the chassis. The pharyngeal swab cotton swab conveying mechanism, the test tube conveying mechanism, the cotton swab head shearing mechanism for the pharyngeal swab cotton swab, the test tube cap opening mechanism and the test tube positioning and ejection mechanism are installed on the chassis, and the cotton swab stick ejection mechanism is installed on the cotton swab conveying mechanism. It has the advantages of simple structure, high recovery efficiency, good recovery effect, small occupied space, separate storage of the test tube and the pharyngeal swab cotton swab stick after sampling, and stable operation.

Description

Technical Field

[0001] The present invention relates to the technical field of pharyngeal swab sampling and recovery equipment, and specifically relates to a pharyngeal swab sampling and recovery machine with a simple structure, high recovery efficiency, good recovery effect, small occupied space, separate storage of the test tube and the pharyngeal swab cotton swab stick after sampling, and stable operation. Background Art

[0002] The driving inside the existing nucleic acid sampling and recovery equipment adopts a variety of driving structures. Each action requires a motor for driving, and separate moving tracks are required for limiting the movement in each direction. Therefore, there are problems such as large occupied space, small recovery volume, low recovery efficiency, high failure rate, and unstable operation. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art, and provide a pharyngeal swab sampling and recovery machine with a simple structure, high recovery efficiency, good recovery effect, small occupied space, separate storage of the test tube and the pharyngeal swab cotton swab stick after sampling, and stable operation.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] A pharyngeal swab sampling and recovery machine is provided with a chassis. A pharyngeal swab cotton swab insertion port is provided on the side of the chassis. It is characterized in that a pharyngeal swab cotton swab conveying mechanism, a test tube conveying mechanism, a cotton swab head shearing mechanism for the pharyngeal swab cotton swab, a test tube cap opening mechanism, a cotton swab stick ejecting mechanism, and a test tube positioning and ejecting mechanism are provided inside the chassis. The pharyngeal swab cotton swab conveying mechanism is a structure capable of realizing the conveying of the pharyngeal swab cotton swab and is fixed inside the chassis. The initial conveying position of the pharyngeal swab cotton swab conveying mechanism is set at the position of the pharyngeal swab cotton swab insertion port, and the end conveying position of the pharyngeal swab cotton swab conveying mechanism is set above the test tube positioning and ejecting mechanism. The test tube conveying mechanism is a structure capable of realizing the conveying of the test tube and is fixed inside the chassis. The test tube positioning and ejecting mechanism is fixed on the side of the bottom outlet of the test tube of the test tube conveying mechanism. The test tube positioning and ejecting mechanism is a structure capable of realizing the ejection of the test tube from the test tube conveying mechanism and positioning it below the test tube opening mechanism. The cotton swab head shearing mechanism for the pharyngeal swab cotton swab is a mechanism for shearing the pharyngeal swab cotton swab and is provided on the upper side of the test tube positioning and ejecting mechanism. The test tube opening mechanism is fixed inside the chassis. The cotton swab stick ejecting mechanism is fixed on the pharyngeal swab cotton swab conveying mechanism. The cotton swab stick ejecting mechanism is capable of realizing the automatic ejection and separation of the cotton swab stick during the reset process of the pharyngeal swab cotton swab conveying mechanism after the cotton swab head of the cotton swab is sheared by the cotton swab head shearing mechanism.

[0006] The throat swab cotton swab conveying mechanism described in the present invention includes a throat swab cotton swab fixing seat and a throat swab cotton swab transfer track. The cotton swab fixing seat is provided with a cotton swab insertion hole. The throat swab cotton swab transfer track includes a positioning plate, a sliding plate, and a sliding drive assembly. The positioning plate is fixed on the chassis. The sliding plates are slidably connected to the positioning plate through the sliding drive assembly. The sliding drive assembly is a structure that can drive the sliding plate to slide horizontally on the positioning plate, then rotate and slide vertically. The cotton swab fixing seat is fixedly connected to the sliding plate.

[0007] The sliding drive assembly described in the present invention includes a drive motor, a rocker, a first slideway, a second slideway, a third slideway, a first limit pin, and a second limit pin. The positioning plate is provided with a first slideway. The first slideway includes a continuously connected horizontal slide part, an arc slide part, and a vertical slide part. The sliding plate is provided with a second slideway, which is a straight horizontal slide part. The rocker is provided with a third slideway, which is a straight vertical slide part. The drive motor is fixedly installed on the positioning plate. The output shaft of the drive motor is connected to the rocker. The rocker is provided with a first limit pin. The first limit pin is slidably connected to the third slideway on the rocker and the first slideway on the positioning plate and then fixed on the sliding plate. The second limit pin is fixed on the positioning plate and slidably connected to the second slideway. By driving the drive motor to drive the rocker to rotate, under the action of the first limit pin and the second limit pin, the sliding plate can realize the actions of sliding horizontally, then rotating and sliding vertically on the positioning plate.

[0008] In front of the cotton swab insertion hole of the cotton swab fixing seat described in the present invention, there is a cotton swab support seat. The cotton swab support seat is provided with a cotton swab support hole coaxial with the cotton swab insertion hole. The cotton swab support seat is connected to the positioning plate through a support rod passing through a slide hole provided on the sliding plate. A compression spring is provided between the sliding plate and the cotton swab support seat. The compression spring is sleeved on the support rod. The cotton swab is straightened through the cotton swab support seat. A limit baffle is provided at the rear end of the support rod. The limit baffle is fixed at the rear end of the support rod. The whole cotton swab support seat is pulled by the rearward movement of the sliding plate contacting the limit baffle.

[0009] A reed switch is provided on the side of the cotton swab fixing seat described in the present invention. The base of the reed switch is fixed on the cotton swab fixing seat. The reed of the reed switch extends to the position of the cotton swab insertion hole. When the cotton swab is inserted into the cotton swab insertion hole and touches the reed of the reed switch at the same time, the reed switch senses the insertion of the cotton swab and can transmit a signal to start the sampling and recovery machine to work.

[0010] The test tube conveying mechanism described in the present invention includes two parallel support rods. The lower ends of the two support rods are respectively fixed in the chassis through brackets. The width between the two support rods is greater than the diameter of the tube body of the test tube and less than the diameter of the cap of the test tube. The height of the lower end outlets of the two parallel support rods is lower than the height of the upper end inlets of the support rods. The upper end inlets of the support rods are smoothly transitioned to the lower end outlets of the support rods, so that the test tubes slide down under the action of gravity. The support rods on the outer sides of the lower end outlets of the two parallel support rods are bent towards the inside. The ends of the inner support rods of the two parallel support rods are connected to a card through a spindle, and the card and the support rod are elastically connected through a spring.

[0011] In the present invention, the length of the support rods on the outer sides of the lower end outlets of the two parallel support rods is greater than the length of the inner support rods.

[0012] The test tube positioning and ejection mechanism described in the present invention includes a V-shaped clamping slider, a V-shaped clamping limit block, and a linear driver. The V-shaped clamping limit block is arranged at the lower end outlet position of the support rod and below the outer support rod. The V-shaped clamping limit block is arranged at the lower position corresponding to the inner support rod of the V-shaped clamping limit block. The output shaft of the linear driver is slidably connected to the V-shaped clamping slider. The linear driver drives the V-shaped clamping slider to move towards the inside and pushes the tube body of the test tube to move towards the V-shaped clamping limit block and be clamped between the V-shaped clamping slider and the V-shaped clamping limit block.

[0013] The test tube cap opening mechanism described in the present invention includes an opening support plate, an opening lifting motor, a lifting plate, an opening rotating motor, and a test tube cap cylinder. The opening lifting motor is fixed on the side of the opening support plate. The output end of the opening lifting motor is fixedly connected to the lifting plate. The lifting plate is fixed with the opening rotating motor. The lifting plate is fixed on the opening support plate through a slide rail. The output shaft of the opening rotating motor is connected to the test tube cap cylinder. The axis of the test tube cap cylinder is the same as the axis of the test tube fixed in the test tube positioning and ejection mechanism.

[0014] In the present invention, the lifting plate is connected to the output end of the opening lifting motor through an opening avoidance head. The opening avoidance head includes a bolt and a nut. The output end of the opening lifting motor is provided with a first avoidance hole, and the lifting plate is provided with a second avoidance hole corresponding to the position of the first avoidance hole. The bolt passes through the first avoidance hole at the output end and the second avoidance hole on the lifting plate and is connected to the nut. The nut is fixed at the end of the bolt. By setting the distance between the end of the bolt and the nut of the bolt as the avoidance distance, it is realized that the test tube cap rotates and lifts the test tube cap instantly during the opening process, avoiding the hard opening rotation of the test tube cap with the test tube.

[0015] The cotton swab head shearing mechanism described in the present invention includes a shearing motor, a rotating connecting rod, an upper connecting rod of scissors, a lower connecting rod of scissors, a connecting rod and a sliding rod. The output shaft of the shearing motor is connected to the rotating connecting rod, the other end of the rotating connecting rod is hinged to the sliding rod, the other end of the sliding rod is hinged to one end of two connecting rods through a sliding assembly, the other ends of the two connecting rods are hinged to the ends of the upper connecting rod of scissors and the lower connecting rod of scissors, the middle parts of the upper connecting rod of scissors and the lower connecting rod of scissors are hinged through a pin shaft, and the sliding pin shaft is slidably connected to the chassis.

[0016] The sliding assembly described in the present invention is configured as a pin shaft, which passes through the sliding rod and the two connecting rods respectively and is hinged to the sliding rod and the two connecting rods.

[0017] The sliding assembly of the present invention is configured as a sliding block, one end of which is hinged to a sliding rod, the other end of which is hinged to two connecting rods, and the sliding block is slidably connected to the chassis.

[0018] The cotton swab stick ejection mechanism of the present invention comprises an ejection tube, an ejection pin, an ejection spring, a toggle spring, and a reset ramp. The ejection tube is fixed to the rear side of the cotton swab fixing seat. An ejection pin is arranged in the ejection tube. The ejection pin is L-shaped. The horizontal part of the L-shaped ejection pin is inserted into the ejection tube. The vertical part of the L-shaped ejection pin extends out of the ejection tube. The side wall of the ejection tube is provided with an ejection groove for inserting the vertical part of the L-shaped ejection pin. The L-shaped ejection pin is connected to the ejection tube via the ejection spring. The ejection pin is pressed against the ejection tube by the ejection spring. The cotton swab inserted in the cotton swab fixing seat is ejected, and the toggle spring piece is fixed at the rear end of the positioning plate, and the reset ramp is fixed at the front side of the positioning plate and is installed at the traveling position of the L-shaped ejection pin and contacts with the vertical part of the L-shaped ejection pin. The toggle spring piece pulls the vertical part of the L-shaped ejection pin to the ejection sleeve position and ejects the cotton swab stick, and the inclined surface of the reset ramp pushes the vertical part of the L-shaped ejection pin to the end of the ejection slot and drives the vertical part of the L-shaped ejection pin to rotate to reset the vertical part of the L-shaped ejection pin.

[0019] Due to the adoption of the above structure, the present invention has the advantages of simple structure, high recovery efficiency, good recovery effect, small space occupation, separate storage of the test tube and the throat swab cotton swab stick after sampling, stable operation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the chassis.

[0022] Figure 3 yes Figure 2 Schematic diagram of the structure of the mid-pharyngeal swab conveying mechanism.

[0023] Figure 4 yesFigure 2 Schematic structural diagram in the direction of the other side

[0024] Figure 5 It is a diagram showing the positional relationship between the sliding plate and the positioning plate in the ejection state

[0025] Figure 6 It is a partially enlarged view of the state where the toggle piece and the L-shaped ejection pin are toggled

[0026] Figure 7 It is a schematic structural diagram showing the positional relationship among the test tube positioning and ejection mechanism, the cotton swab head shearing mechanism, and the test tube cap opening mechanism

[0027] Figure 8 It is a top view showing the relationship between the test tube conveying mechanism and the test tube positioning and ejection mechanism

[0028] Figure 9 It is an enlarged view of the connection relationship between the opening avoidance head and the lifting plate Detailed implementation mode

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] As shown in the accompanying drawings, a throat swab sampling and recycling machine is provided with a chassis 1, and a throat swab insertion port 2 is provided on the side of the chassis 1. It is characterized in that a throat swab conveying mechanism 3, a test tube conveying mechanism 4, a cotton swab head shearing mechanism 5 for throat swabs, a test tube cap opening mechanism 6, a cotton swab rod ejection mechanism, and a test tube positioning and ejection mechanism 7 are provided in the chassis 1. The throat swab conveying mechanism 3 is a structure capable of realizing the conveyance of throat swabs and is fixed in the chassis 1. The initial conveyance position of the throat swab conveying mechanism 3 is set at the position of the throat swab insertion port 2, and the end conveyance position of the throat swab conveying mechanism 3 is set above the test tube positioning and ejection mechanism 7. The test tube conveying mechanism 4 is a structure capable of realizing the conveyance of test tubes and is fixed in the chassis 1. The test tube positioning and ejection mechanism 7 is fixed on the side of the bottom outlet of the test tube of the test tube conveying mechanism 4. The test tube positioning and ejection mechanism 7 is a structure capable of realizing the ejection of the test tube from the test tube conveying mechanism 4 and positioning it below the test tube cap opening mechanism. The cotton swab head shearing mechanism 5 for throat swabs is a mechanism for shearing throat swabs and is provided on the upper side of the test tube positioning and ejection mechanism 7. The test tube cap opening mechanism is fixed in the chassis 1. The cotton swab rod ejection mechanism is fixed on the throat swab conveying mechanism 3. The cotton swab rod ejection mechanism is capable of realizing the automatic ejection and detachment of the cotton swab rod during the reset process of the throat swab conveying mechanism 3 after the cotton swab head of the cotton swab is sheared by the cotton swab head shearing mechanism 5.

[0031] Further, the pharyngeal swab cotton swab conveying mechanism 3 includes a pharyngeal swab cotton swab fixing seat 8 and a pharyngeal swab cotton swab transfer track. The cotton swab fixing seat 8 is provided with a cotton swab insertion hole. The pharyngeal swab cotton swab transfer track includes a positioning plate 9, a sliding plate 10 and a sliding drive assembly. The positioning plate 9 is fixed on the chassis 1. The sliding plates 10 are slidably connected to the positioning plate 9 through the sliding drive assembly. The sliding drive assembly is a structure capable of driving the sliding plate 10 to slide horizontally, rotate and then slide vertically on the positioning plate 9. The cotton swab fixing seat 8 is fixedly connected to the sliding plate 10.

[0032] Further, the sliding drive assembly includes a drive motor 11, a rocker 12, a first slideway 13, a second slideway 14, a third slideway 15, a first limit pin 16 and a second limit pin 17. The positioning plate 9 is provided with the first slideway 13. The first slideway 13 includes a continuously connected horizontal slide part, an arc slide part and a vertical slide part. The sliding plate 10 is provided with the second slideway 14. The second slideway 14 is a straight horizontal slide part. The rocker 12 is provided with the third slideway 15. The third slideway 15 is a straight vertical slide part. The drive motor 11 is fixedly installed on the positioning plate 9. The output shaft of the drive motor 11 is connected to the rocker 12. The rocker 12 is provided with the first limit pin 16. The first limit pin 16 is slidably connected to the third slideway 15 on the rocker 12 and the first slideway 13 on the positioning plate 9 respectively and then fixed on the sliding plate 10. The second limit pin 17 is fixed on the positioning plate 9 and is slidably connected to the second slideway 14. By driving the drive motor 11 to drive the rocker 12 to rotate, under the action of the first limit pin 16 and the second limit pin 17, the sliding plate 10 realizes the actions of sliding horizontally, rotating and then sliding vertically on the positioning plate 9.

[0033] Further, a cotton swab support seat 18 is arranged on the front side of the cotton swab insertion hole of the cotton swab fixing seat 8. The cotton swab support seat 18 is provided with a cotton swab support hole coaxial with the cotton swab insertion hole. The cotton swab support seat 18 is connected to the positioning plate 9 through a support rod 19 passing through a slide hole provided on the sliding plate 10. A compression spring 20 is arranged between the sliding plate 10 and the cotton swab support seat 18. The compression spring 20 is sleeved on the support rod 19. The cotton swab is straightened through the cotton swab support seat 18.

[0034] Further, a reed inductive switch 21 is arranged on the side surface of the cotton swab fixing seat 8. The base of the reed inductive switch 21 is fixed on the cotton swab fixing seat 8. The reed of the reed inductive switch 21 extends to the position of the cotton swab insertion hole. When the cotton swab is inserted into the cotton swab insertion hole and touches the reed of the reed inductive switch 21 at the same time, the reed inductive switch 21 senses the insertion of the cotton swab and can transmit a signal to start the sampling and recovery machine to work. A limit baffle 22 is arranged at the rear end of the support rod 19. The limit baffle 22 is fixed at the rear end of the support rod. The cotton swab support seat 18 is pulled integrally by the rearward movement of the sliding plate 3 contacting the limit baffle 22.

[0035] The above-mentioned throat swab cotton swab conveying mechanism realizes the lateral movement, rotation and vertical movement of the cotton swab after sampling through the throat swab cotton swab transfer track. The lateral, rotational and vertical movements of the throat swab can be achieved by one motor, two limit pins and three slideways, which occupies a small space and reduces the production cost.

[0036] Further, the test tube conveying mechanism 4 includes two parallel support rods 23. The lower ends of the two support rods 23 are respectively fixed in the chassis 1 through brackets. The width between the two support rods 23 is greater than the tube body diameter of the test tube and less than the lid diameter of the test tube. The height of the lower end outlet of the two parallel support rods 23 is lower than the height of the upper end inlet of the support rods 23. The upper end inlet of the support rod 23 smoothly transitions to the lower end outlet of the support rod 23 so that the test tube slides down under the action of gravity. The support rods 23 on the outer sides of the lower end outlet positions of the two parallel support rods 23 are bent towards the inside. The ends of the inner support rods 23 of the two parallel support rods 23 are connected to the card 24 through a spindle. The card 24 is elastically connected to the support rod 23 through a spring.

[0037] Further, the length of the support rods 23 on the outer sides of the lower end outlet positions of the two parallel support rods 23 is greater than the length of the inner support rods 23.

[0038] The above test tube conveying mechanism automatically slides down the test tube under the action of gravity. In order to increase the test tube capacity of the test tube conveying mechanism, the test tube conveying mechanism is designed to be curved. As long as the height difference between the upper end inlet and the lower end outlet is ensured, no power is required for driving, which reduces the occupied area and also reduces the production cost.

[0039] Furthermore, the test tube positioning and ejection mechanism 7 includes a V-shaped clamping slider 25, a V-shaped clamping limit block 26, and a linear driver. The V-shaped clamping limit block 26 is arranged at the outlet position of the lower end of the support rod 23 and below the outer support rod 23. The V-shaped clamping limit block 26 is arranged at the position below the corresponding inner support rod 23 of the V-shaped clamping limit block 26. The output shaft of the linear driver is slidably connected to the V-shaped clamping slider 25. The linear driver drives the V-shaped clamping slider 25 to move inward, pushing the tube body of the test tube out and moving it towards the V-shaped clamping limit block 26 and clamping it between the V-shaped clamping slider 25 and the V-shaped clamping limit block 26. The linear driver includes a driving motor 27 and a linear slide rail 28. The output shaft of the driving motor 27 is connected to a lead screw. The nut of the lead screw is connected to the linear slide rail 28. The linear slide rail 28 is connected to the V-shaped clamping slider 25. The bottom of the V-shaped clamping slider is provided with a bottom plate, which supports the bottom of the test tube and prevents the test tube from being pressed off during the downward pressing of the open lid. At the same time, during the detachment process, the support rod can detach the test tube. The output shaft of the above-mentioned driving motor is connected to the lead screw through a gear transmission, which can reduce the occupied space of the driving motor. A code scanning opening 52 is provided on the side of the V-shaped clamping slider. A code scanning instrument 53 is installed on the chassis on the side of the code scanning opening 52 to scan the code pasted on the test tube through the code scanning instrument 53.

[0040] The above test tube positioning and ejection mechanism takes out the test tube from the lower end outlet of the above test tube conveying mechanism and aligns it directly below the test tube lid opening mechanism, and then unloads the test tube through the return position. The process of taking out the test tube from the lower end outlet of the support rod, aligning the test tube, and discharging the material is realized by one driving motor. Therefore, the occupied area is reduced and the production cost is reduced.

[0041] Furthermore, the test tube lid opening mechanism 6 includes an opening support plate 29, an opening lifting motor 30, a lifting plate 31, an opening rotating motor 32, and a test tube lid cylinder 33. The opening support plate 29 is fixedly provided with the opening lifting motor 30 on the side. The output end of the opening lifting motor 30 is fixedly connected to the lifting plate 31. The lifting plate 31 is fixedly provided with the opening rotating motor 32. The lifting plate 31 is fixed on the opening support plate 29 through a slide rail. The output shaft of the opening rotating motor 32 is connected to the test tube lid cylinder 33. The axis of the test tube lid cylinder 33 is the same as the axis of the test tube fixed in the test tube positioning and ejection mechanism 7.

[0042] Further, the lifting plate 31 is connected to the output end of the cover-opening lifting motor 30 through a cover-opening avoidance head. The cover-opening avoidance head includes a bolt 34 and a nut 35. The output end of the cover-opening lifting motor 30 is provided with a first avoidance hole, and the lifting plate 31 is provided with a second avoidance hole corresponding to the position of the first avoidance hole. The bolt 34 passes through the first avoidance hole at the output end and the second avoidance hole on the lifting plate 31 and is connected to the nut 35. The nut 35 is fixed at the end of the bolt 34. By setting the distance between the end of the bolt 34 and the nut of the bolt 34 as the avoidance distance, the test tube cap can be rotated and lifted instantaneously when opening the cover, avoiding the hard rotation of the test tube cap with the test tube when opening the cover.

[0043] Further, the cotton swab head shearing mechanism 5 includes a shearing motor 36, a rotating link 37, an upper scissors link 38, a lower scissors link 39, a connecting rod 40 and a sliding rod 41. The output shaft of the shearing motor 36 is connected to the rotating link 37. The other end of the rotating link 37 is hinged to the sliding rod 41. The other end of the sliding rod 41 is respectively hinged to one end of the two connecting rods 40 through a sliding component. The other ends of the two connecting rods 40 are respectively hinged to the ends of the upper scissors link 38 and the lower scissors link 39. The middle parts of the upper scissors link 38 and the lower scissors link 39 are hinged through a shaft pin. The sliding shaft pin is slidably connected to the chassis 1. Heating plates are respectively installed on the upper scissors link 38 and the lower scissors link 39. The cotton swab stick is cut off by hot melting through the heating plates.

[0044] Further, the sliding component is set as a shaft pin, and the shaft pin passes through the sliding rod 41 and the two connecting rods 40 respectively and is hinged to the sliding rod 41 and the two connecting rods 40.

[0045] Further, the sliding component is set as a sliding block 42. One end of the sliding block 42 is hinged to the sliding rod 41, and the other end of the sliding block 42 is hinged to the two connecting rods 40. The sliding block 42 is slidably connected to the chassis 1.

[0046] The driving motor in the above cotton swab head shearing mechanism can rotate in one direction to achieve shearing and returning, reducing costs.

[0047] Further, the cotton swab stick ejection mechanism includes an ejection cylinder 43, an ejection pin 44, an ejection spring, a toggle spring plate 45, and a reset ramp 46. The ejection cylinder 43 is fixed to the rear side of the cotton swab fixing seat 8. An ejection pin 44 is provided in the ejection cylinder 43. The ejection pin 44 is L-shaped. The horizontal portion of the L-shaped ejection pin 44 is inserted into the ejection cylinder 43, and the vertical portion of the L-shaped ejection pin 44 extends out of the ejection cylinder 43. An ejection groove 47 for inserting the vertical portion of the L-shaped ejection pin 44 is provided on the side wall of the ejection cylinder 43. The L-shaped ejection pin 44 is connected to the ejection cylinder 43 through an ejection spring. The ejection spring ejects the cotton swab inserted into the cotton swab fixing seat 8 through the ejection pin 44. The toggle spring plate 45 is fixed to the rear end of the positioning plate 9. The reset ramp 46 is fixed to the front side of the positioning plate 9 and is installed at the walking position of the L-shaped ejection pin 44 and contacts the vertical portion of the L-shaped ejection pin 44. The toggle spring plate 45 deflects the vertical portion of the L-shaped ejection pin 44 to the ejection sleeve position and ejects the cotton swab stick. The inclined surface of the reset ramp 46 pushes the vertical portion of the L-shaped ejection pin 44 to the end of the ejection groove 47 and drives the vertical portion of the L-shaped ejection pin 44 to rotate to reset the vertical portion of the L-shaped ejection pin 44. A retaining platform 48 is provided on the upper side of the L-shaped ejection pin 44 on the sliding plate. The retaining platform 48 contacts the vertical portion of the L-shaped ejection pin 44 and stops the rotation of the vertical portion of the L-shaped ejection pin 44. The toggle spring plate is U-shaped. The toggle spring plate is U-shaped. The U-shaped toggle spring plate is fixedly connected to the positioning seat. There are two connection methods between the U-shaped toggle spring plate and the positioning seat. One is that the two ends of the U-shaped toggle spring plate are respectively elastically and rotatably connected to the positioning plate, and the other is that one end of the U-shaped toggle spring plate is fixedly connected to the positioning plate, and the other end of the U-shaped toggle spring plate is outside the positioning plate. In both cases, the U-shaped toggle spring plate performs reverse elastic over-positioning and forward deflection on the vertical portion of the L-shaped ejection pin.

[0048] The cotton swab stick ejection mechanism is installed on the positioning plate and the sliding plate, and realizes the ejection of the cotton swab stick and the return of the cotton swab stick ejection mechanism during the sliding process of the positioning plate and the sliding plate, without the need to add additional power, saving costs and reducing the occupied space.

[0049] Furthermore, a partition plate 49 is provided in the middle of the chassis 1. The throat swab cotton swab conveying mechanism 3, the test tube conveying mechanism 4, the cotton swab head shearing mechanism 5 of the throat swab cotton swab, the test tube cap opening mechanism 6, the cotton swab rod ejection mechanism, and the test tube positioning and ejection mechanism 7 are all arranged above the partition plate 49. The partition plate 49 is provided with a test tube dropping hole and a cotton swab rod dropping hole. The test tube dropping hole is arranged directly below the V-shaped clamping limit block 26 and the V-shaped clamping slider 25. A cotton swab rod receiving cylinder 50 is installed on the cotton swab rod dropping hole. An incoming rod inclined surface is provided above the cotton swab rod receiving cylinder 50, and the incoming rod inclined surface is inclined downward toward the side of the cotton swab rod ejection mechanism. A receiving box 51 is provided below the partition plate 49. The receiving box 51 is divided into a test tube receiving cavity and a cotton swab rod receiving cavity. The test tube receiving cavity is below the test tube dropping hole, and the cotton swab rod receiving cavity is below the cotton swab rod dropping hole. A disinfection device after test tube sampling is installed on the receiving box 51, and a disinfection device before test tube sampling is provided above the partition plate 49. The test tubes after sampling and the test tubes before sampling are separated by the partition plate 49.

[0050] When the present invention is in use, there are only the throat swab cotton swab insertion port 2 for inserting the cotton swab and the drawing hole of the material receiving box on the side of the overall chassis 1. After manual sampling, the rear end of the cotton swab stick is inserted into the cotton swab insertion hole on the cotton swab fixing seat 8 of the chassis 1, and the spring piece 45 is moved to be fixed to the rear end of the positioning plate 9. The reset ramp 46 is fixed to the front side of the positioning plate 9 and is installed on the walking position of the L-shaped ejection pin 44 and contacts with the vertical part of the L-shaped ejection pin 44. In the initial position, the cotton swab holding hole on the cotton swab holder 18 and the cotton swab insertion hole on the cotton swab fixing seat 8 correspond to the circular hole position on the chassis 1. The rear end of the cotton swab stick of the cotton swab is inserted into the cotton swab holder 18 and the cotton swab fixing seat 8 in turn, and the rear end of the cotton swab stick contacts with the ejection pin 44 in the ejection assembly. During the insertion of the cotton swab stick, the spring piece is sensed. The spring piece in the switch 21 is toggled, and the spring piece sensing switch 21 senses the insertion of the cotton swab, that is, it transmits a signal to start the drive motor 2711, and the drive motor 2711 drives the rocker 12 to rotate, and the first limit pin 16 slides on the third slide 15 on the rocker 12 and the first slide 13 on the positioning plate 9. During the backward movement of the sliding plate 10, it touches the limit baffle 22 at the rear end of the stripping rod, and then continues to pull the cotton swab holder 18 to move together. Under the joint action of the first limit pin 16, the second limit pin 17, the first slide 13, the second slide 14 and the third slide 15, the drive motor 2711 works and finally realizes the sliding plate 10 moving toward the rear side and then rotating 90 degrees downward. During the rotation, the spring piece 45 is toggled toward the inside to press the L-shaped ejection The vertical part of the pin 44 is limited by the stopper 48 on the sliding plate 10. Therefore, the spring piece 45 is pushed over the vertical part of the L-shaped ejection pin 44, and then the sliding plate 10 continues to move downward to move the cotton swab head to the test tube mouth position of the test tube, thereby completing the transportation of the cotton swab. In this process, only one motor is needed to realize the movement of the cotton swab toward the rear side, the rotation toward the bottom, and the movement toward the bottom. After the transportation is completed, the cotton swab head extending to the test tube mouth position is sheared and falls into the test tube, and then the motor rotates in the opposite direction, and the sliding plate 10 moves up. In the process of the sliding plate 10 moving up to the position where rotation is required, the spring piece 451 is pushed in the opposite direction to move the vertical part of the L-shaped ejection pin 44. When it is pushed to the ejection slot 47 position, the L-shaped ejection pin 44 Under the action of the ejection spring, the cotton swab is instantly ejected toward the direction of the cotton swab fixing seat 8 and ejected into the cotton swab recovery tube in the chassis 1. After the ejection, the sliding plate 10 continues to rotate and moves horizontally toward the front. During the movement toward the front, the vertical portion of the L-shaped ejection pin 44 contacts the tip of the reset ramp 46, and the sliding plate 10 continues to move. The L-shaped ejection pin 44 moves toward the rear under the action of the tip of the reset ramp 46. Then, after moving to the rear end, the sliding plate 10 continues to move. The L-shaped ejection pin 44 rotates and disengages from the ejection slot 47 under the action of the inclined surface of the reset ramp 46, thereby resetting the L-shaped ejection pin 44. The above-mentioned moving spring piece 45 pulls the vertical portion of the L-shaped ejection pin 44 to the ejection sleeve position and ejects the cotton swab.The inclined surface of the reset ramp 46 pushes the vertical portion of the L-shaped ejection pin 44 to the end of the ejection slot 47 and drives the vertical portion of the L-shaped ejection pin 44 to rotate and reset the vertical portion of the L-shaped ejection pin 44.

[0051] The cotton swab head is transported to the upper end of the test tube mouth. The test tube is transported, positioned, opened, sheared, closed, and unloaded through the interaction of the test tube transport mechanism 4, the test tube cover opening mechanism 6, the pharyngeal swab cotton swab head shearing mechanism 5, and the test tube positioning and disengaging mechanism 7 to realize the sampling and recovery steps of the test tube. Specifically, the test tube is placed between two parallel support rods 23, and the edge of the test tube cover is stuck above the two parallel support rods 23. The cover hangs the test tube between the two parallel support rods 23. The test tube between the two parallel support rods 23 slides down naturally due to gravity. The test tube at the lower end of the lower end outlet of the two parallel support rods 23 is slidably engaged by the V-shaped clamping slider 25. The V-shaped clamping slider 25 moves toward the direction of the V-shaped clamping limit block 26 under the action of the linear drive. When the V-shaped clamping slider 25 is engaged with the test tube wall of the test tube, the test tube moves along the inner wall of the V-shaped clamping slider 25, thereby reaching the V-shaped clamping slider. The card 24 is always in contact with the other side wall of the test tube during the process of separation, until the test tube is pushed to the center of the V-shaped clamping limit block 26, and the cover of the test tube is covered after the cover of the test tube is opened and the cotton swab head is cut, and then the V-shaped clamping slider 25 moves backward. During the backward movement, the card 24 always contacts the wall of the test tube. When the space between the card 24 and the V-shaped clamping slider 25 is not enough to support the gravity of the test tube, the test tube falls to the bottom. In the test tube box, the unloading of the test tube is finally realized. The bottom of the V-shaped clamping slider 25 is provided with a bottom plate, which supports the bottom of the test tube and prevents the test tube from being pressed down during the process of opening the cover and pressing down. At the same time, during the detachment process, the support rod 23 can detach the test tube. The shearing of the cotton swab head is achieved by driving the rotating connecting rod 37 to rotate by the shear motor 36. After the rotating connecting rod 37 rotates for a cycle, the upper connecting rod 38 and the lower connecting rod 39 of the scissors return to their original positions after shearing. Hot melt shearing is achieved by heating the heating plate, and finally the shearing function is completed.

[0052] The unloaded test tubes mentioned above fall into the test tube receiving cavity of the receiving box 51 through the test tube dropping hole. The cotton swab stick is ejected into the cotton swab stick receiving tube through the cotton swab stick ejection mechanism during the resetting process of the cotton swab conveying mechanism, and then falls into the cotton swab stick receiving cavity below through the cotton swab stick receiving tube. A post-test tube sampling disinfection device is installed on the receiving box, and a pre-test tube sampling disinfection device is provided above the partition 49. The test tubes after sampling and before sampling are separated by the partition 49, so that the test tubes before and after sampling can be disinfected separately, thereby avoiding excessive disinfection of the test tubes after sampling that affects the detection effect.

[0053] First, the test tube conveying mechanism of the throat swab sampling and recycling machine moves the test tube downward by gravity. The lowermost test tube is conveyed to the lower part of the test tube cap opening mechanism through the test tube positioning and ejection mechanism. The test tube cap opening mechanism opens the cap of the test tube. The throat swab cotton swab conveying mechanism conveys the cotton swab above the test tube mouth and inserts it into the test tube mouth. The cotton swab head shearing mechanism of the throat swab cotton swab shears the cotton swab head and drops it into the test tube. When the number of cotton swab heads reaches the required quantity, the test tube cap opening mechanism covers the cap of the test tube. The test tube positioning and ejection mechanism returns to its original position and the test tube falls off into the test tube receiving cavity. The test tube conveying mechanism returns to its original position simultaneously after shearing. During the process of returning to its original position, the cotton swab stick ejection mechanism ejects the cotton swab stick into the cotton swab stick receiving cylinder and falls into the cotton swab stick receiving cavity, completing the recycling work of the cotton swab after sampling.

Claims

1. A throat swab sampling and recycling machine is provided with a chassis, and a throat swab cotton swab insertion opening is arranged on the side of the chassis. It is characterized in that The described chassis is provided with a throat swab cotton swab conveying mechanism, a test tube conveying mechanism, a cotton swab head shearing mechanism for throat swabs, a test tube cap opening mechanism, a cotton swab stick ejection mechanism, and a test tube positioning and ejection mechanism. The throat swab cotton swab conveying mechanism is a structure capable of realizing the conveyance of throat swab cotton swabs and is fixed inside the chassis. The initial conveying position of the throat swab cotton swab conveying mechanism is set at the position of the throat swab insertion opening, and the end conveying position of the throat swab cotton swab conveying mechanism is set above the test tube positioning and ejection mechanism. The test tube conveying mechanism is a structure capable of realizing the conveyance of test tubes and is fixed inside the chassis. The side of the bottom outlet of the test tube of the test tube conveying mechanism is fixed with the test tube positioning and ejection mechanism. The test tube positioning and ejection mechanism is a structure capable of realizing the ejection of the test tube from the test tube conveying mechanism and positioning it below the test tube opening mechanism. The cotton swab head shearing mechanism for throat swabs is a mechanism for shearing throat swab cotton swabs and is arranged on the upper side of the test tube positioning and ejection mechanism. The test tube opening mechanism is fixed inside the chassis. The cotton swab stick ejection mechanism is fixed on the throat swab cotton swab conveying mechanism. The cotton swab stick ejection mechanism is capable of realizing the automatic ejection and separation of the cotton swab stick during the reset process of the throat swab cotton swab conveying mechanism after the cotton swab head of the cotton swab is sheared by the cotton swab head shearing mechanism. The throat swab cotton swab conveying mechanism includes a throat swab cotton swab fixing seat and a throat swab cotton swab transfer track. The cotton swab fixing seat is provided with a cotton swab insertion hole. The throat swab cotton swab transfer track includes a positioning plate, a sliding plate, and a sliding drive assembly. The positioning plate is fixed on the chassis. The sliding plates are slidably connected to the positioning plate through the sliding drive assembly. The sliding drive assembly is a structure capable of driving the sliding plate to perform a lateral sliding, rotating, and vertical sliding movement on the positioning plate. The cotton swab fixing seat is fixedly connected to the sliding plate. The sliding drive assembly includes a drive motor, a rocker, a first slideway, a second slideway, a third slideway, a first limit pin, and a second limit pin. The positioning plate is provided with the first slideway. The first slideway includes a continuously connected lateral sliding part, an arc sliding part, and a vertical sliding part. The sliding plate is provided with the second slideway, and the second slideway is a straight lateral sliding part. The rocker is provided with the third slideway, and the third slideway is a straight vertical sliding part. The drive motor is fixedly installed on the positioning plate, and the output shaft of the drive motor is connected to the rocker. The rocker is provided with the first limit pin. The first limit pin is slidably connected to the third slideway on the rocker and the first slideway on the positioning plate and is then fixed on the sliding plate. The second limit pin is fixed on the positioning plate and is slidably connected to the second slideway. By driving the drive motor to drive the rocker to rotate, under the action of the first limit pin and the second limit pin, the sliding plate performs a lateral sliding, rotating, and vertical sliding movement on the positioning plate. A reed switch is arranged on the side of the cotton swab fixing seat. The base in the reed switch is fixed on the cotton swab fixing seat, and the reed in the reed switch extends to the position of the cotton swab insertion hole. When the cotton swab is inserted into the cotton swab insertion hole and touches the reed of the reed switch at the same time, the reed switch senses the insertion of the cotton swab and can transmit a signal to start the operation of the sampling and recovery machine.

2. A throat swab sampling and recovery machine according to claim 1, characterized in that, In front of the cotton swab insertion hole of the described cotton swab fixing seat, there is a cotton swab supporting seat. On the cotton swab supporting seat, there is a cotton swab supporting hole coaxial with the cotton swab insertion hole. The cotton swab supporting seat is connected to the positioning plate through a supporting rod passing through a sliding hole provided on the sliding plate. Between the sliding plate and the cotton swab supporting seat, there is a compression spring, and the compression spring is sleeved on the supporting rod. The straight state of the cotton swab is realized through the cotton swab supporting seat.

3. A throat swab sampling and recycling machine according to claim 1, characterized in that the described test tube conveying mechanism includes two parallel support rods. The lower ends of the two support rods are respectively fixed in the chassis through brackets. The width between the two support rods is greater than the tube body diameter of the test tube and less than the lid body diameter of the test tube. The lower end outlet height of the two parallel support rods is lower than the upper end inlet height of the support rods. The upper end inlet of the support rod smoothly transitions to the lower end outlet of the support rod, so that the test tube slides down under the action of gravity. The outer support rod at the lower end outlet position of the two parallel support rods bends towards the inside. The end of the inner support rod of the two parallel support rods is connected to a card through a spindle, and the card and the support rod are elastically connected through a spring.

4. A throat swab sampling and recycling machine according to claim 3, characterized in that the length of the outer support rod at the lower end outlet position of the two parallel support rods is greater than the length of the inner support rod.

5. A throat swab sampling and recycling machine according to claim 1, characterized in that the described test tube positioning and ejecting mechanism includes a V-shaped clamping slider, a V-shaped clamping limit block, and a linear driver. The V-shaped clamping limit block is arranged at the lower end outlet position of the support rod and is arranged below the outer support rod. The V-shaped clamping limit block is arranged at the lower position corresponding to the inner support rod of the V-shaped clamping limit block. The output shaft of the linear driver is slidably connected to the V-shaped clamping slider. The linear driver drives the V-shaped clamping slider to move towards the inside and pushes the tube body of the test tube to move towards the V-shaped clamping limit block and be clamped between the V-shaped clamping slider and the V-shaped clamping limit block.

6. A throat swab sampling and recycling machine according to claim 1, characterized in that the described test tube lid opening mechanism includes an opening support plate, an opening lifting motor, a lifting plate, an opening rotating motor, and a test tube lid cylinder. The side of the opening support plate is fixed with the opening lifting motor. The output end of the opening lifting motor is fixedly connected to the lifting plate. The lifting plate is fixed with the opening rotating motor. The lifting plate is fixed on the opening support plate through a slide rail. The output shaft of the opening rotating motor is connected to the test tube lid cylinder. The axis of the described test tube lid cylinder is the same as the axis of the test tube fixed in the test tube positioning and ejecting mechanism.

7. A throat swab sampling and recycling machine according to claim 6, characterized in that The lifting plate is connected to the output end of the cover opening and lifting motor via a cover opening avoidance head, the cover opening avoidance head includes a bolt and a nut, the output end of the cover opening and lifting motor is provided with a first avoidance hole, and the lifting plate is provided with a second avoidance hole corresponding to the position of the first avoidance hole, the bolt passes through the first avoidance hole at the output end and the second avoidance hole on the lifting plate and is connected with the nut, the nut is fixed to the end of the bolt, and the distance between the end of the bolt and the nut of the bolt is set as the avoidance distance, so that the test tube cover can be rotated and lifted at the moment of opening the cover.

8. A throat swab sampling and recovery machine according to claim 1, It is characterized in that The cotton swab head shearing mechanism includes a shearing motor, a rotating connecting rod, an upper connecting rod of scissors, a lower connecting rod of scissors, a connecting rod and a sliding rod. The output shaft of the shearing motor is connected to the rotating connecting rod, the other end of the rotating connecting rod is hinged to the sliding rod, the other end of the sliding rod is hinged to one end of two connecting rods through a sliding assembly, the other ends of the two connecting rods are hinged to the ends of the upper connecting rod of scissors and the lower connecting rod of scissors, and the middle parts of the upper connecting rod of scissors and the lower connecting rod of scissors are hinged to the distribution shaft.

9. A throat swab sampling and recovery machine according to claim 8, Features The sliding component is configured as a pin or a sliding block.

10. A throat swab sampling and recovery machine according to claim 1, Features The cotton swab stick ejection mechanism includes an ejection tube, an ejection pin, an ejection spring, a toggle spring, and a reset ramp. The ejection tube is fixed to the rear side of the cotton swab fixing seat. An ejection pin is arranged in the ejection tube. The ejection pin is L-shaped. The horizontal part of the L-shaped ejection pin is inserted into the ejection tube. The vertical part of the L-shaped ejection pin extends out of the ejection tube. The side wall of the ejection tube is provided with an ejection groove for inserting the vertical part of the L-shaped ejection pin. The L-shaped ejection pin is connected to the ejection tube via the ejection spring. The ejection pin is pressed against the cotton swab by the ejection spring. The cotton swab inserted in the fixed seat is ejected, and the toggle spring piece is fixed to the rear end of the positioning plate, and the reset ramp is fixed to the front side of the positioning plate and is installed at the traveling position of the L-shaped ejection pin and contacts the vertical part of the L-shaped ejection pin. The toggle spring piece pulls the vertical part of the L-shaped ejection pin to the ejection sleeve position and ejects the cotton swab stick, and the inclined surface of the reset ramp pushes the vertical part of the L-shaped ejection pin to the end of the ejection slot and drives the vertical part of the L-shaped ejection pin to rotate to reset the vertical part of the L-shaped ejection pin.

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