CN219702729U

CN219702729U - CP pad screening device

Info

Publication number: CN219702729U
Application number: CN202321154409.XU
Authority: CN
Inventors: 邹武; 尤其飞; 张婷; 高峥嵘; 卜小康
Original assignee: Relia Biotechnologyjiangsu Co ltd
Current assignee: Relia Biotechnologyjiangsu Co ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2023-09-19
Anticipated expiration: 2033-05-15

Abstract

The utility model provides a CP pad screening device, which comprises a main body frame, a feeding part, a screening part, a classifying part and a control part, wherein the main body frame is provided with a plurality of screening holes; the main body frame comprises a base, a screening seat, a storage seat and a relay seat; the feeding part comprises a conveyor belt device I, a fixed frame and a CP pad fixed plate; the screening part comprises a positioning mechanism and a screening mechanism; the sorting section includes a relay mechanism, a sorting mechanism, and a storage mechanism. The marking result of the CP pad can be screened out by mechanical assistance, and the staff only needs to feed; the use of the optical sensor module obviously improves the screening effect, avoids human errors, and can effectively detect unqualified products caused by the breakpoint of the coupling; the combination of the stepping motor and the synchronous toothed belt effectively ensures the stability of the detection efficiency of the optical sensor module; the two are matched with the electromagnet and the iron block on the CP pad fixing plate, so that the distance between the optical sensor module and the CP pad is more stable, and the accuracy of the screening effect is further improved.

Description

CP pad screening device

Technical Field

The utility model relates to the field of in-vitro detection, in particular to a CP pad screening device.

Background

The in vitro detection kit generally comprises a kit body, a test paper substrate, a sample pad, a CP pad, an NC membrane, an absorption pad and the like, wherein the CP pad is an important component of the in vitro detection kit and is used for storing a CP pad solution of fluorescent substances, antibodies corresponding to in vitro detection and the like. When the in-vitro detection kit is produced and processed, scribing (T line and C line) is needed to be carried out on the CP pad, and the scribing is to spray the solution containing the corresponding coupling compound on the CP pad by adopting a spray head, so that the detection result of the in-vitro detection kit is convenient to read.

In order to ensure the quality of finished products of the in-vitro detection kit, the result of marking (T line and C line) of the CP pad serving as a raw material is screened in the production process, and the unqualified CP pad with uneven breakpoint and spraying is screened.

The existing screening mode mostly adopts manual screening, and has the following defects:

firstly, errors exist in naked eyes, and when the products are screened for a long time, the products are easy to fatigue and unqualified products are easy to mix into qualified products.

Secondly, since the CP pad solution is a mixture of various kinds of biotin, there may be a partial blockage of the inner diameter of the nozzle during the spray scribing process, which results in that whether or how much of the really needed conjugate (antibody, etc.) is contained or not is not recognized by the naked eye although a part of the solution is sprayed on the CP pad.

Disclosure of Invention

The utility model provides a CP pad screening device, which solves the problems of easy fatigue, more errors, poor screening effect and the like in the process of manually screening a marking result of a CP pad.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a CP pad screening device comprises a main body frame, a feeding part, a screening part, a classifying part and a control part.

The main body frame comprises a base, a screening seat, a storage seat and a relay seat. The base comprises a cuboid hollow container I. The screening seat is arranged on the base through a support column, a rectangular through hole I, a rectangular through hole II, a rectangular through hole III and an inverted rectangular container I are arranged on the upper bottom plate of the screening seat, U-shaped opening through grooves I are symmetrically arranged on the front side plate and the rear side plate, and a rectangular through hole IV is arranged on the right side plate; the U-shaped opening through groove I coincides with one side of the rectangular through hole I; the first rectangular container is positioned above the second rectangular through hole; the first rectangular through hole is connected with the movable door through an upper hinge. The storage seat is arranged on the base, a rectangular through hole five is formed in the left side plate of the storage seat, a rectangular through hole six is formed in the upper bottom plate, and a rectangular through hole seven is formed in the rear side plate; the rectangular through hole V coincides with the rectangular through hole IV. The relay seat is arranged on the screening seat through the support column and is positioned above the rectangular through hole III, and the strip-shaped through hole I is arranged on the lower bottom plate of the relay seat.

The feeding part comprises a conveyor belt device I, a fixing frame and a CP pad fixing plate. The first conveyor belt device is arranged in the screening seat; the fixed frames are equidistantly arranged on the first conveyor belt device; the CP pad fixing plate is inserted in the fixing frame, a rectangular groove I is formed in the upper bottom surface of the CP pad fixing plate, two strip-shaped grooves I are formed in the lower bottom surface of the CP pad fixing plate, grooves are formed in the side surfaces of the CP pad fixing plate, and iron blocks are arranged in the grooves.

The screening portion includes a positioning mechanism and a screening mechanism.

The positioning mechanism comprises a first screw motor, a bearing plate, a positioning plate, a first sliding column, a second screw motor, a C-shaped movable plate and an electromagnet. The screw rod motor I and the slide column I are arranged in the screening seat; the bearing plate is connected to the first sliding column in a sliding way and is positioned above the first conveyor belt device; the screw rod motor I is detachably connected with the bearing plate; the positioning plate is arranged on the lower bottom surface of the bearing plate through the connecting column; the screw rod motor II is arranged on the positioning plate; the C-shaped movable plate is connected to the positioning plate in a sliding way through a limiting rail; the limit rail is arranged on the lower bottom surface of the positioning plate through the connecting column; the rotor of the screw rod motor II is detachably connected with the C-shaped movable plate; an electromagnet is arranged on the C-shaped movable plate and is matched with an iron block on the CP pad fixing plate.

The screening mechanism is arranged on the C-shaped movable plate and comprises a driving structure, a sampling structure and a marking structure. The driving structure comprises a stepping motor, a synchronous toothed belt, a second sliding rail and an L-shaped movable plate; the stepping motor and the second sliding rail are arranged on the C-shaped movable plate; a first gear is arranged on a rotating shaft of the stepping motor, and a second gear is connected to the C-shaped movable plate through a pin shaft; the stepping motor is in transmission connection with the gear II through a synchronous toothed belt; the L-shaped movable plate is connected to the second slide rail in a sliding manner and is connected with the synchronous toothed belt. The sampling structure comprises an optical sensor module, a light source module and a fluorescent signal acquisition module, wherein the optical sensor module and the light source module are arranged on the L-shaped movable plate, and the fluorescent signal acquisition module is arranged on the C-shaped movable plate; the marking structure comprises a code spraying machine device which is arranged on the movable carrier plate.

The sorting section includes a relay mechanism, a sorting mechanism, and a storage mechanism.

The relay mechanism comprises a sliding rod, a screw rod motor III, a push rod motor I and a driving rod. The sliding rod is arranged in the screening seat through the bracket; the left ends of the two sliding rods are positioned at the front side and the rear side of the conveyor belt device, and the right ends of the two sliding rods are positioned in the storage seat; the screw rod motor III is arranged in the relay seat; the first push rod motor is connected with a rotor of the third screw rod motor through a mounting frame; the driving rod is arranged at the movable end of the first push rod motor and is positioned below the relay seat.

The sorting mechanism comprises a push rod motor II, a movable slideway, a fixed slideway and an electric telescopic rod. The second push rod motor is arranged in the storage seat; the movable slideway is arranged at the movable end of the push rod motor II; the fixed slideway is arranged on the rectangular through hole seven; the electric telescopic rod is arranged on the inner wall of the side plate in the storage seat through the fixing frame.

The storage mechanism comprises a second conveyor belt device, an electric lifting device and an E-shaped storage rack. The second conveyor belt device is arranged in the storage seat, and the left end of the second conveyor belt device is positioned at one side of the sliding rod; the electric lifting device is arranged in the storage seat, and the movable end of the electric lifting device is provided with a fixed plate; the fixed plate is provided with a slot; the E-shaped storage rack is detachably connected in the slot on the fixed plate.

The control part comprises a control mechanism, a feedback mechanism and a PLC controller. The control mechanism comprises a start switch, a screening switch, a reset switch and a pause switch. The feedback mechanism comprises a first distance sensor module, a second distance sensor module, a third distance sensor module, a fourth distance sensor module and a photoelectric counting sensor module.

Preferably, the slide bar is replaced by a slide.

Preferably, the combination of the stepping motor and the synchronous toothed belt is replaced by a screw motor.

Preferably, the fixed frame is replaced with a partition plate.

Compared with the prior art, the beneficial effects are that:

according to the utility model, through the integrated arrangement of the main body frame, the feeding part, the screening part, the classifying part and the control part, the following functions are realized:

firstly, mechanically assisted screening of the CP mat scoring results, the staff only need to feed, i.e. periodically replenish the "CP mat holder with CP mat to be tested" on the first conveyor means.

Secondly, the use of the optical sensor module can obviously improve the screening effect, avoid human errors, and effectively detect unqualified products caused by the breakpoint of the coupling (the reasons such as local blockage of a spray head, and the like).

Thirdly, the combination of the stepping motor and the synchronous toothed belt effectively ensures the stability of the detection efficiency of the optical sensor module. The two are matched with the electromagnet and the iron block on the CP pad fixing plate, so that the distance between the optical sensor module and the CP pad is stable, and the accuracy of the screening effect is further improved.

Drawings

FIG. 1 is a schematic view of a front partial cross-sectional structure of the present utility model;

FIG. 2 is a schematic sectional view A of a front view of a partial structure of the present utility model;

FIG. 3 is a schematic cross-sectional view B of a front view of a partial structure according to the present utility model;

FIG. 4 is a schematic top view partially in cross-section of the present utility model;

FIG. 5 is a schematic top view of a partial structure of the screening mechanism of the present utility model;

FIG. 6 is a schematic diagram of a system architecture according to the present utility model;

fig. 7 is a circuit wiring diagram of the present utility model.

In the figure: 101. base, 102, screening seat, 103, rectangular receptacle, 105, movable door, 106, storage seat, 107, rectangular through-hole five, 108, rectangular through-hole six, 109, rectangular through-hole seven, 110, relay seat, 201, conveyor belt assembly one, 202, stationary frame, 203, CP pad stationary plate, 301, lead screw motor one, 302, slide column one, 303, carrier plate, 304, locating plate, 305, lead screw motor two, 306, C-shaped movable plate, 307, stepper motor, 308, synchronous toothed belt, 309, slide rail two, 310, L-shaped movable plate, 311, optical sensor module, 312, fluorescent signal acquisition module, 313, light source module, 314, code sprayer device, 401, slide bar, 402, lead screw motor three, 403, push rod motor one, 404, drive bar, 405, push rod motor two, 406, movable slide, 407, stationary slide, 408, electric telescopic rod, 409, conveyor belt assembly two, 410, electric lifting device, 411, and storage frame.

Description of the embodiments

Embodiment 1 referring to fig. 1 to 7, a CP pad screening device includes a main body frame, a loading part, a screening part, a classifying part, and a control part.

The main body frame includes a base 101, a screening deck 102, a storage deck 106, and a relay deck 110.

The base 101 includes a rectangular hollow container one.

The screening seat 102 is disposed on the base 101 through a pillar.

The upper bottom plate of the screening seat 102 is provided with a first rectangular through hole, a second rectangular through hole and a third rectangular through hole.

The front side plate and the rear side plate of the screening seat 102 are symmetrically provided with a U-shaped opening through groove I103; the U-shaped opening through groove 103 coincides with one side of the rectangular through hole.

An inverted rectangular container I104 is arranged on the upper bottom plate of the screening seat 102, and the rectangular container I104 is positioned above the rectangular through hole II.

The first rectangular through hole is connected with the movable door 105 through an upper hinge.

A rectangular through hole IV is arranged on the right side plate of the screening seat 102.

The storage seat 106 is disposed on the base 101.

A fifth rectangular through hole 107 is formed in the left side plate of the storage seat 106; rectangular through hole five 107 coincides with rectangular through hole four.

The upper bottom plate of the storage seat 106 is provided with a rectangular through hole six 108 for the inlet and outlet of the unloading frame.

A rectangular through hole seven 109 is formed in the rear side plate of the storage seat 106 and is used for discharging the unqualified CP pads.

The relay seat 110 is disposed on the screening seat 102 through a pillar and is located above the third rectangular through hole.

The lower bottom plate of the relay seat 110 is provided with a first strip-shaped through hole.

The feeding part comprises a conveyor belt device I201, a fixed frame 202 and a CP pad fixed plate 203.

The first conveyor belt assembly 201 is disposed within the screening station 102.

The fixing frames 202 are equidistantly arranged on the first conveyor belt device 201.

The fixing frame 202 is made of flexible materials.

The CP pad fixing plate 203 is inserted into the fixing frame 202; the CP-pad fixing plate 203 is provided with a groove on the side surface, and an iron block is arranged in the groove.

The upper bottom surface of the CP-pad fixing plate 203 is provided with a rectangular recess for accommodating a CP pad.

The CP-pad fixing plate 203 is provided with two first and second bar grooves, the first bar groove is used for sliding on the sliding rod 401, and the second bar groove is used for adapting to the fixing frame 202.

The positioning mechanism comprises a first screw motor 301, a bearing plate 303, a positioning plate 304, a first slide column 302, a second screw motor 305, a C-shaped movable plate 306 and an electromagnet.

The first screw motor 301 and the first slide column 302 are disposed in the screening seat 102.

The carrier 303 is slidably coupled to the first spool 302, and the carrier 303 is positioned above the first conveyor 201.

The first screw motor 301 is detachably connected with the bearing plate 303, and is used for adjusting the position of the bearing plate 303.

The positioning plate 304 is disposed on the lower bottom surface of the carrier plate 303 through a connecting column.

The second screw motor 305 is disposed on the positioning plate 304.

The "C" shaped movable plate 306 is slidably connected to the positioning plate 304 via a limit rail.

The limit rail is arranged on the lower bottom surface of the positioning plate 304 through a connecting column, and the limit rail is used for guaranteeing the position level of the C-shaped movable plate 306 and providing upward pulling force.

The mover of the screw motor II 305 is detachably connected with the C-shaped movable plate 306, and is used for fine-adjusting the position of the C-shaped movable plate 306.

An electromagnet is arranged on the C-shaped movable plate 306, and the electromagnet is matched with an iron block on the CP pad fixing plate 203.

The screening mechanism is disposed on a "C" shaped fly leaf 306.

The screening mechanism comprises a driving structure, a sampling structure and a marking structure.

The driving structure comprises a stepping motor 307, a synchronous toothed belt 308, a second slide rail 309 and an L-shaped movable plate 310.

The stepper motor 307 and the second slide rail 309 are disposed on the "C" shaped movable plate 306.

The rotation shaft of the stepper motor 307 is provided with a first gear, and the other gear is connected to the C-shaped movable plate 306 through a pin shaft.

The step motor 307 is in transmission connection with the second gear through a synchronous toothed belt 308.

The L-shaped movable plate 310 is slidably connected to the second slide rail 309, and the L-shaped movable plate 310 is connected to the synchronous toothed belt 308, so that the synchronous toothed belt 308 drives the L-shaped movable plate 310 to move on the second slide rail 309.

The sampling structure includes an optical sensor module 311, a fluorescent signal acquisition module 312, and a light source module 313.

The optical sensor module 311 and the light source module 313 are disposed on the L-shaped movable plate 310.

The fluorescent signal collection module 312 is disposed on the "C" shaped movable plate 306, and the fluorescent signal collection module 312 is connected with the optical sensor module 311 and the light source module 313 by a flat cable.

The optical sensor module 311 is used for collecting information of the CP pad and transmitting the information to the fluorescent signal collecting module 312.

The marking structure includes a code jet device 314; the ink jet device 314 is disposed on the movable carrier.

The relay mechanism comprises a sliding rod 401, a screw motor III 402, a push rod motor I403 and a driving rod 404.

The sliding rod 401 is arranged in the screening seat 102 through a bracket; the left ends of the two sliding rods 401 are positioned on the front side and the rear side of the first conveyor belt device 201; the right ends of the two slide bars 401 are located within the storage seat 106.

The third screw motor 402 is disposed in the relay base 110.

And the first push rod motor 403 is connected with a rotor of the third screw rod motor 402 through a mounting frame.

The driving rod 404 is disposed on the movable end of the first push rod motor 403.

The driving rod 404 is located below the relay seat 110 and is used for pushing the CP-pad fixing plate 203 on the slide rod 401.

The sorting mechanism comprises a second push rod motor 405, a movable slide way 406, a fixed slide way 407 and an electric telescopic rod 408.

The second push rod motor 405 is disposed in the storage seat 106.

The movable slide 406 is disposed at the movable end of the second push rod motor 405.

The fixed slide 407 is disposed on the rectangular through hole seven 109.

The electric telescopic rod 408 is arranged on the inner wall of the side plate in the storage seat 106 through a fixing frame; for pushing the CP-pad holder 203 in the movable slide 406.

The storage mechanism includes a second conveyor belt device 409, an electric lifting device 410, and an "E" shaped storage rack 411.

The second conveyor belt device 409 is disposed in the storage seat 106.

The left end of the second conveyor belt device 409 is located at one side of the sliding rod 401.

The electric lifting device 410 is disposed in the storage seat 106.

A fixed plate is arranged at the movable end of the electric lifting device 410; the fixing plate is provided with a slot.

The E-shaped storage rack 411 is detachably connected in a slot on the fixed plate.

The control part comprises a control mechanism, a feedback mechanism and a PLC controller.

The control mechanism comprises a start switch, a screening switch, a reset switch and a pause switch.

The starting switch, the screening switch, the reset switch and the pause switch are arranged on the screening seat panel.

The feedback mechanism comprises a first distance sensor module, a second distance sensor module, a third distance sensor module, a fourth distance sensor module, a color sensor module and a photoelectric counting sensor module.

The first distance sensor module is arranged on the inner wall of the side plate in the storage seat 106 and is positioned below the rectangular through hole; for collecting position information of the CP-pad fixture 203 and feeding back to the PLC controller.

The second distance sensor module is arranged on the inner wall of the side plate in the storage seat 106 and is positioned below the second rectangular through hole; the position information of the CP pad fixing plate 203 is collected and fed back to the PLC controller, and a starting signal is provided for the screening process.

The third distance sensor module is disposed on the inner wall of the side plate in the storage seat 106 and above the sliding rod 401.

The fourth distance sensor module is disposed in the storage seat 106 and below the second conveyor belt device 409.

The two parts of the photoelectric counting sensor module are symmetrically arranged on the inner wall of the side plate in the storage seat 106 and are positioned above the sliding rod 401.

The color sensor module is arranged on the inner wall of the side plate in the storage seat 106 and is positioned above the sliding rod 401, and is used for recording the number of the unqualified CP pads marked by the ink jet printer device 314 in cooperation with the PLC.

The PLC controller is disposed within the memory location 106.

The working principle and the using method are as follows:

first, presetting:

the starting switch is pressed to debug the power supply of the device.

The CP pad to be tested is placed into the groove of the CP-pad holder plate 203.

The recovery frame is placed under the fixed skid 407.

Secondly, feeding:

the operator places the CP-pad holder 203 on the holder 202 on the first conveyor 201, and the first distance sensor module outputs a signal to the PLC controller, which outputs a signal to the first conveyor 201, and the first conveyor 201 moves the holder 202 one unit distance to the right. This is repeated to complete the loading of the CP-pad fixture 203.

And thirdly, screening.

When the CP-pad fixing plate 203 reaches below the "C" shaped movable plate 306, the second distance sensor module outputs a signal to the PLC controller, which outputs a signal to the first screw motor 301, the second screw motor 305, the "C" shaped movable plate 306, and the electromagnet.

The first screw motor 301 drives the C-shaped movable plate 306 to move downwards, the second screw motor 305 drives the C-shaped movable plate 306 to move leftwards, the electromagnet is started in a delayed mode, the CP pad fixing plate 203 is adsorbed, and final adjustment is completed.

The PLC controller outputs a signal to the stepper motor 307; the stepper motor 307 drives the L-shaped movable plate 310 to sequentially move, and the CP pad signal of the CP pad fixing plate 203 is transmitted to the PLC (the light source module 313 is started to provide a light source, the optical sensor module 311 intakes the signal, and the signal is converted by the fluorescent signal collecting module 312 and then transmitted to the PLC so as to realize the content detection of fluorescent substances on the CP pad to be detected).

The PLC controller outputs a signal to the ink jet device 314, and the ink jet device 314 marks the CP pad of the failed CP pad holder 203 (the PLC controller determines based on the feedback information from the optical sensor module 311 and the fluorescent signal acquisition module 312).

After that, the electromagnet is turned off, and the first screw motor 301 and the second screw motor 305 are reset.

Fourth, classifying;

the CP-pad holder 203 is transferred from the first conveyor 201 to the slide 401 by the bar-shaped recess of itself and the slide 401 (the first conveyor 201 moves to the right to provide the pushing force). When passing through the third distance sensor module, the PLC controller outputs signals to a third screw motor 402 and a first push rod motor 403; push rod motor one 403 moves downwards, and screw rod motor three 402 delays to drive CP pad fixing plate 203 to move right.

When the marked CP pad passes through the color sensor module and the photoelectric counting sensor module, the PLC controller outputs signals to the push rod motor II 405 and the electric telescopic rod 408; the second push rod motor 405 drives the movable slide way 406 to move upwards, so that the CP pad fixing plate 203 is separated from the slide bar 401 and enters the movable slide way 406, and the electric telescopic rod 408 pushes the CP pad fixing plate 203 to the fixed slide way 407 and finally enters the recovery frame.

Other CP pad fixing plates 203 enter the "E" shaped storage rack 411 (the distance sensor module feeds back a signal to the PLC controller, which controls the start and stop of the second conveyor belt device 409) from the slide bar 401 and the second conveyor belt device 409, and when the first conveyor belt device 411 is fully loaded, the electric lifting device 410 moves up by one unit, so that the storage layer of the empty "E" shaped storage rack 411 is parallel to the second conveyor belt device 409.

The fluorescent signal acquisition module 312 of the present utility model includes an analog signal adjustment circuit and a single-chip microcomputer sampling circuit. The light source module 313 is used for providing an acquisition environment, the light source module 313 uses an infrared light source, and the working principle of the light source module 313 is as follows: the infrared light source is turned on, excitation light is reflected by the dichroic mirror after focusing, then is focused by the focusing mirror, light spots are converted into line spots by the cylindrical mirror and are focused on the surface of a sample (CP pad) to be tested, a proper environment is provided for the operation of the fluorescent signal acquisition module 312, and then the fluorescent signal acquisition module 312 quantitatively detects fluorescent immunochromatography. The quantitative detection of fluorescent substances on the reagent card to be detected can be realized by utilizing a reasonable optical measurement mechanism and an electrical analysis module, the detection limit reaches 0.001% of the concentration magnitude of the fluorescent substance solution, the measurement result is reliable, the repeatability is good, the relative error is small, the quantitative precision of the measurement result is high, and the measurement error is less than 2%. The problem that unqualified products (caused by reasons such as local blockage of a spray head and the like) caused by the breakpoint of the coupling can not be detected by naked eyes is effectively solved, and the screening effect is remarkably improved.

In example 2, on the basis of example 1, the slide rail 401 was replaced with a slide rail to improve the adaptability.

In embodiment 3, the combination of the stepping motor 307 and the timing belt 308 is replaced with a screw motor four on the basis of embodiment 1, and the structure is simplified.

Embodiment 4, on the basis of embodiment 1, the fixing frame 202 is replaced with a partition plate to improve the feeding efficiency.

Claims

1. A CP pad screening device, characterized in that: comprises a main body frame, a feeding part, a screening part, a classifying part and a control part; the main body frame comprises a base, a screening seat, a storage seat and a relay seat; the feeding part comprises a conveyor belt device I, a fixed frame and a CP pad fixed plate; the screening part comprises a positioning mechanism and a screening mechanism; the positioning mechanism comprises a first screw motor, a bearing plate, a positioning plate, a first sliding column, a second screw motor, a C-shaped movable plate and an electromagnet; the screw rod motor I and the slide column I are arranged in the screening seat; the bearing plate is connected to the first sliding column in a sliding way and is positioned above the first conveyor belt device; the screw rod motor I is detachably connected with the bearing plate; the positioning plate is arranged on the lower bottom surface of the bearing plate through the connecting column; the screw rod motor II is arranged on the positioning plate; the C-shaped movable plate is connected to the positioning plate in a sliding way through a limiting rail; the limit rail is arranged on the lower bottom surface of the positioning plate through the connecting column; the rotor of the screw rod motor II is detachably connected with the C-shaped movable plate; an electromagnet is arranged on the C-shaped movable plate and is matched with an iron block on the CP pad fixing plate; the screening mechanism is arranged on the C-shaped movable plate; the sorting section includes a relay mechanism, a sorting mechanism, and a storage mechanism.

2. The CP pad screening device of claim 1, wherein: the screening mechanism comprises a driving structure, a sampling structure and a marking structure; the driving structure comprises a stepping motor, a synchronous toothed belt, a second sliding rail and an L-shaped movable plate; the stepping motor and the second sliding rail are arranged on the C-shaped movable plate; a first gear is arranged on a rotating shaft of the stepping motor, and a second gear is connected to the C-shaped movable plate through a pin shaft; the stepping motor is in transmission connection with the gear II through a synchronous toothed belt; the L-shaped movable plate is connected to the second slide rail in a sliding manner and is connected with the synchronous toothed belt.

3. The CP pad screening device of claim 1, wherein: the first conveyor belt device is arranged in the screening seat; the fixed frame is arranged on the first conveyor belt device; the CP pad fixing plate is inserted in the fixing frame, a rectangular groove I is formed in the upper bottom surface of the CP pad fixing plate, two strip-shaped grooves I are formed in the lower bottom surface of the CP pad fixing plate, grooves are formed in the side surfaces of the CP pad fixing plate, and iron blocks are arranged in the grooves.

4. The CP pad screening device of claim 1, wherein: the relay mechanism comprises a slide bar, a screw rod motor III, a push rod motor I and a driving rod; the sliding rod is arranged in the screening seat through the bracket, the left end of the sliding rod is positioned at the front side and the rear side of the conveyor belt device, and the right end of the sliding rod is positioned in the storage seat; the screw rod motor III is arranged in the relay seat; the first push rod motor is connected with a rotor of the third screw rod motor through a mounting frame; the driving rod is arranged at the movable end of the first push rod motor and is positioned below the relay seat.

5. The CP pad screening device of claim 1, wherein: the sorting mechanism comprises a push rod motor II, a movable slideway, a fixed slideway and an electric telescopic rod; the second push rod motor is arranged in the storage seat; the movable slideway is arranged at the movable end of the push rod motor II; the fixed slideway is arranged on the rectangular through hole seven; the electric telescopic rod is arranged on the inner wall of the side plate in the storage seat through the fixing frame.

6. The CP pad screening device of claim 1, wherein: the storage mechanism comprises a second conveyor belt device, an electric lifting device and an E-shaped storage rack; the second conveyor belt device is arranged in the storage seat, and the left end of the second conveyor belt device is positioned at one side of the sliding rod; the electric lifting device is arranged in the storage seat, and the movable end of the electric lifting device is provided with a fixed plate; the fixed plate is provided with a slot; the E-shaped storage rack is detachably connected in the slot on the fixed plate.

7. The CP pad screening device of claim 1, wherein: the fixed frame is replaced by a partition plate.

8. The CP pad screening device of claim 2, wherein: the sampling structure comprises an optical sensor module, a fluorescent signal acquisition module and a light source module; the optical sensor module and the light source module are arranged on the L-shaped movable plate; the fluorescent signal acquisition module is arranged on the C-shaped movable plate; the marking structure comprises a code spraying machine device which is arranged on the movable carrier plate.

9. The CP pad screening device of claim 2, wherein: and replacing the combination of the stepping motor and the synchronous toothed belt by a screw motor.

10. The CP pad screening device of claim 4, wherein: and replacing the slide bar with a slide way.