A full-automatic mobile phone screen defect detection device

Abstract

The present application relates to the technical field of detection equipment, and specifically relates to a full-automatic mobile phone screen defect detection device, which comprises a conveying belt, a supporting frame is horizontally installed above the conveying belt, a sliding frame is linearly driven and installed on the supporting frame, a suction mechanism is vertically installed on the sliding frame, a detection box is fixedly installed on one side of the conveying belt, and a detection table for detecting a mobile phone screen is arranged on the detection box; the detection box is provided with an opening at the top, a sliding box is slidably installed above the detection box, the sliding box is provided with an opening at the bottom, a detection camera for detecting the image of the mobile phone screen in the detection table is fixedly installed in the sliding box; one side of the sliding box is fixedly connected with the sliding frame, and a scraper is arranged in the sliding box; the present application can avoid the influence of residual glue on the mobile phone screen on the quality of collected photos, and more accurately detect the surface defects of the mobile phone screen.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, specifically to a fully automatic mobile phone screen defect detection device. Background Technology

[0002] During the production of mobile phone screens, a pressing process is required to fix them to the phone holder (usually by adhesive). After pressing, to prevent defective products from entering the market, the pressed screens are typically inspected using an automatic defect detection device (by taking pictures of the screen to determine if defects exist). However, during the production process, because the screen and holder are usually glued together, some glue inevitably remains on the screen (especially around the edges). This residual glue can affect the computer's judgment of the captured images during the defect detection process. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a fully automatic mobile phone screen defect detection device, which can effectively solve the problem that in the production process of the existing technology, since the screen and the bracket are usually glued together, glue residue is inevitably left on the mobile phone screen during the production process. This residual glue will affect the computer's judgment of the acquired images during the mobile phone screen defect detection process.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention provides a fully automatic mobile phone screen defect detection device, including a conveyor belt, a support frame horizontally installed above the conveyor belt, a sliding frame linearly driven on the support frame, an adsorption mechanism lifted and lowered on the sliding frame, a detection box fixedly installed on one side of the conveyor belt, a detection platform for detecting mobile phone screens on the detection box, and the adsorption mechanism for placing the mobile phone screens on the conveyor belt onto the detection platform.

[0006] The detection box has an opening at the top, a sliding box is slidably installed on the top of the detection box, and an opening is provided at the bottom of the sliding box. A detection camera for image detection of mobile phone screens inside the detection station is fixedly installed inside the sliding box.

[0007] One side of the sliding box is fixedly connected to the sliding frame. The sliding box is equipped with a scraper for scraping off the glue on the surface of the mobile phone screen. As the sliding box slides from the inspection table to the conveyor belt, the surface of the mobile phone screen is processed before the inspection camera captures the image.

[0008] Furthermore, an installation plate is fixedly installed inside the sliding box, the detection camera is fixedly installed on the side of the installation plate away from the sliding frame in the middle, and the scraper lift is installed directly below the installation plate.

[0009] Furthermore, guide grooves are provided on the interior of both sides of the detection box facing each other, and guide rods for sliding inside the guide grooves are fixedly installed on both sides of the scraper. When the scraper slides towards the sliding frame, the guide grooves drive the scraper to move downward. A sliding rod is fixedly installed above the scraper. The upper end of the sliding rod passes through the mounting plate and is slidably connected to the mounting plate. An elastic element for driving the scraper away from the mounting plate is sleeved on the outside of the sliding rod.

[0010] Furthermore, the testing platform is provided with a testing slot for placing a mobile phone screen. A first nozzle is provided in the middle of the side of the testing slot away from the sliding frame. Dust collection slots are provided on both sides of the end of the testing slot facing the sliding frame. A support plate is fixedly installed between the two dust collection slots. The upper surface of the support plate is flush with the bottom of the testing slot. A second nozzle is provided on both sides of the support plate. The first nozzle and the second nozzle are used to blow dust or particles into the dust collection slots.

[0011] Furthermore, a dust collection box is fixedly installed below the testing box, and a connecting channel is provided above the dust collection box. The connecting channel is connected to the inside of the dust collection box, passes through the bottom of the testing box and the testing platform, and is connected to the inside of the dust collection trough.

[0012] Furthermore, a partition is provided in the middle of the dust collection box. The partition includes a vertical section and an inclined section. The upper part of the inclined section is inclined towards the side away from the lower opening of the connecting channel. The partition is provided with multiple connecting holes.

[0013] Furthermore, a pneumatic cylinder is fixedly installed on the side of the detection box away from the sliding frame. A piston is slidably installed inside the pneumatic cylinder. A pneumatic rod is coaxially fixedly installed on the side of the piston away from the sliding frame. The other end of the pneumatic rod extends out of the pneumatic cylinder. An air outlet pipe is connected to the top of the pneumatic cylinder. The air outlet pipe is connected to the first nozzle and the second nozzle respectively. The pneumatic rod is used to squeeze air from the inner wall of the pneumatic cylinder into the air outlet pipe.

[0014] Furthermore, a return spring is sleeved on the outer side of the pneumatic rod. The return spring is used to drive the pneumatic rod to return to its original position in the direction away from the sliding frame. When the sliding box moves towards the conveyor belt under the drive of the sliding frame, the inner wall of the sliding box abuts against one end of the pneumatic rod, causing the pneumatic rod to compress the air inside the pneumatic cylinder.

[0015] Furthermore, an air inlet pipe is connected to the lower part of the pneumatic cylinder, and the other end of the air inlet pipe is connected to the inside of the dust collection box. The air inlet pipe is used to draw air from the inside of the dust collection box when the pneumatic rod extends out of the pneumatic cylinder.

[0016] The technical solution provided by this invention has the following advantages compared with known public technologies:

[0017] In this invention, a scraper is installed inside the sliding box. When it is necessary to detect defects in mobile phone screens, multiple mobile phone screens to be tested are first placed on the conveyor belt in sequence. When the mobile phone screen moves to the bottom of the adsorption mechanism, the adsorption mechanism moves downward to adsorb the mobile phone screen below it. Then, the sliding frame drives the adsorption mechanism and the mobile phone screen to move towards the detection box and place the mobile phone screen on the detection table. Afterward, the sliding frame drives the adsorption mechanism back to the top of the conveyor belt. During this process, the sliding frame simultaneously drives the sliding box to move towards the conveyor belt, so that the scraper and detection camera inside the sliding box pass over the mobile phone screen in sequence. When the scraper passes over the mobile phone screen, it can scrape off the residual glue on the surface of the mobile phone screen, avoiding the residual glue on the mobile phone screen from affecting the quality of the captured photos, and more accurately detecting defects on the surface of the mobile phone screen.

[0018] In this invention, by setting a first nozzle and a second nozzle on the front and rear sides of the testing tank respectively, after the mobile phone screen that has been tested is taken out of the testing station, gas is supplied into the first nozzle and the second nozzle, so that the gas can be sprayed out from the first nozzle and the second nozzle respectively, so that the scraped glue falls into the dust collection tank, which facilitates the collection of these debris and avoids the scraped glue remaining in the testing tank, which would affect the placement of the mobile phone screen.

[0019] In this invention, a pneumatic cylinder is installed on one side of the testing box, and a pneumatic rod is slidably installed at the end of the pneumatic cylinder away from the conveyor belt. When the pneumatic rod moves toward the conveyor belt, it can drive the piston to squeeze the air inside the pneumatic cylinder, so that the air inside the pneumatic cylinder enters the air outlet pipe and is discharged from the first nozzle and the second nozzle respectively. When the pneumatic rod moves away from the conveyor belt, the pneumatic rod drives the piston to slide inside the pneumatic cylinder, so that the pneumatic cylinder generates a negative pressure, which causes the air inlet pipe to draw gas from the dust collection box, so that the glue or dust inside the dust collection trough can be completely sucked into the dust collection box. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the detection box of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the present invention without the conveyor belt;

[0024] Figure 4 This is a schematic diagram of the overall internal structure of the detection box of the present invention;

[0025] Figure 5 This is a side view of the testing platform and pneumatic cylinder of the present invention;

[0026] Figure 6 This is a schematic diagram of the overall structure of the testing station of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the dust collection box of the present invention.

[0028] The labels in the diagram represent:

[0029] 1. Conveyor belt; 2. Support frame; 21. Sliding frame; 3. Adsorption mechanism;

[0030] 4. Detection box; 401. Guide groove; 41. Detection table; 4101. Detection groove; 4102. Dust collection groove; 42. First nozzle; 43. Support plate; 431. Second nozzle; 44. Dust collection box; 441. Connecting channel; 442. Partition; 45. Mounting plate; 451. Detection camera; 46. Scraper; 461. Sliding rod; 462. Elastic element; 463. Guide rod;

[0031] 5. Sliding box; 51. Pneumatic cylinder; 511. Pneumatic rod; 512. Return spring; 52. Air outlet pipe; 53. Air inlet pipe. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] The present invention will be further described below with reference to embodiments.

[0034] Example: A fully automatic mobile phone screen defect detection device, such as Figure 1 - Figure 7As shown, the device includes a conveyor belt 1, a support frame 2 horizontally mounted above the conveyor belt 1, a sliding frame 21 linearly driven mounted on the support frame 2, an adsorption mechanism 3 vertically mounted on the sliding frame 21, a detection box 4 fixedly mounted on one side of the conveyor belt 1, a detection platform 41 for detecting mobile phone screens on the detection box 4, and the adsorption mechanism 3 for placing the mobile phone screens on the conveyor belt 1 onto the detection platform 41.

[0035] The inspection box 4 has an opening at the top, and a sliding box 5 is slidably installed on the top of the inspection box 4. The sliding box 5 has an opening at the bottom, and an inspection camera 451 (usually a CCD or CMOS industrial camera with extremely high resolution (tens of millions of pixels) capable of capturing sub-pixel level defects) is fixedly installed inside the sliding box 5.

[0036] One side of the sliding box 5 is fixedly connected to the sliding frame 21. The sliding box 5 is equipped with a scraper 46 for scraping off the glue on the surface of the mobile phone screen. As the scraper 46 slides from the detection table 41 to the conveyor belt 1 with the sliding box 5, the surface of the mobile phone screen is processed before the detection camera 451 collects the image.

[0037] In this embodiment, a scraper 46 is installed inside the sliding box 5. When it is necessary to detect defects in mobile phone screens, multiple mobile phone screens to be tested are first placed on the conveyor belt 1 in sequence. When the mobile phone screen moves to the bottom of the adsorption mechanism 3, the adsorption mechanism 3 moves downward to adsorb the mobile phone screen below the adsorption mechanism 3. Then, the sliding frame 21 drives the adsorption mechanism 3 and the mobile phone screen to move towards the detection box 4 and place the mobile phone screen on the detection table 41. After that, the sliding frame 21 drives the adsorption mechanism 3 back to the top of the conveyor belt 1. During this process, the sliding frame 21 simultaneously drives the sliding box 5 to move towards the conveyor belt 1, so that the scraper 46 and the detection camera 451 inside the sliding box 5 pass over the mobile phone screen in sequence. When the scraper 46 passes over the mobile phone screen, it can scrape off the glue remaining on the surface of the mobile phone screen (and also scrape off the dust or particles left on the mobile phone screen), avoiding the glue remaining on the mobile phone screen from affecting the quality of the captured photos, and more accurately detecting defects on the surface of the mobile phone screen.

[0038] In addition, after the mobile phone screen detection is completed, the adsorption mechanism 3 moves again above the detection table 41 and adsorbs the mobile phone screen. Then, the adsorption mechanism 3 drives the mobile phone screen to move above the conveyor belt 1 and puts the mobile phone screen back onto the conveyor belt 1.

[0039] It should be noted that the working principle of the mobile phone screen surface image acquisition and inspection by the detection camera 451 is as follows: image acquisition under precise control → image preprocessing to optimize quality → defect location and identification using traditional or deep learning algorithms → defect classification and severity assessment based on features → finally making quality inspection decisions and outputting results. The above working principles are all common technologies in the existing technology, so they will not be elaborated here.

[0040] Furthermore, an installation plate 45 is fixedly installed inside the sliding box 5, and the detection camera 451 is fixedly installed on the side of the installation plate 45 away from the sliding frame 21. The scraper 46 is lifted and installed directly below the installation plate 45, and the detection camera 451 is located on the side of the installation plate 45 away from the sliding frame 21. During the process of the sliding frame 21 driving the adsorption mechanism 3 to move from the detection box 4 to directly above the conveyor belt 1, the detection camera 451 will only collect the image of the mobile phone screen after the scraper 46 passes above the mobile phone screen.

[0041] The detection box 4 has guide grooves 401 on both sides facing each other. The scraper 46 has guide rods 463 fixedly installed on both sides for sliding inside the guide grooves 401. When the scraper 46 slides towards the sliding frame 21, the guide grooves 401 drive the scraper 46 to move downward. A sliding rod 461 is fixedly installed above the scraper 46. The upper end of the sliding rod 461 passes through the mounting plate 45 and is slidably connected to the mounting plate 45. An elastic element 462 is sleeved on the outside of the sliding rod 461 for driving the scraper 46 away from the mounting plate 45.

[0042] In this invention, by setting a guide groove 401 on the inner wall of the detection box 4 and setting guide rods 463 at both ends of the scraper 46, the scraper 46 can be driven to move downward a certain distance as the scraper 46 moves with the sliding box 5 from the side of the detection box 4 away from the conveyor belt 1 towards the conveyor belt 1, so that the multiple scrapers below the scraper 46 can be attached to the mobile phone screen.

[0043] Furthermore, the testing platform 41 is provided with a testing slot 4101 for placing a mobile phone screen. A first nozzle 42 is provided in the middle of the side of the testing slot 4101 away from the sliding frame 21. Dust collection slots 4102 are provided on both sides of the end of the testing slot 4101 facing the sliding frame 21. A support plate 43 is fixedly installed between the two dust collection slots 4102. The upper surface of the support plate 43 is flush with the bottom of the testing slot 4101. A second nozzle 431 is provided on both sides of the support plate 43. The first nozzle 42 and the second nozzle 431 are used to blow dust or particles into the dust collection slots 4102.

[0044] Specifically, by setting a first nozzle 42 and a second nozzle 431 on the front side (the side away from the conveyor belt 1) and the rear side (the side close to the conveyor belt 1) of the detection tank 4101, after the mobile phone screen that has been tested is taken out from the detection table 41, by supplying gas into the first nozzle 42 and the second nozzle 431, the gas can be sprayed out from the first nozzle 42 and the second nozzle 431 respectively, so that the scraped glue falls into the dust collection tank 4102, which facilitates the collection of these debris and prevents the scraped glue from remaining in the detection tank 4101 and affecting the placement of the mobile phone screen.

[0045] A dust collection box 44 is fixedly installed below the detection box 4. A connecting channel 441 is provided above the dust collection box 44, and the connecting channel 441 is connected to the inside of the dust collection box 44. The connecting channel 441 passes through the bottom of the detection box 4 and the detection platform 41 and is connected to the inside of the dust collection trough 4102. A partition 442 is provided in the middle of the dust collection box 44. The partition 442 includes a vertical section and an inclined section. The upper part of the inclined section is inclined towards the side away from the lower opening of the connecting channel 441. A plurality of connecting holes are provided on the partition 442.

[0046] By setting a dust collection box 44 below the detection box 4, the glue that falls into the dust collection trough 4102 (which has solidified and will not stick) can fall into the dust collection box 44, making it easier to collect the glue in a unified manner. By setting a partition 442 inside the dust collection box 44, the glue can be guided to the falling position, making it convenient to store the collected glue in a unified manner.

[0047] Furthermore, a pneumatic cylinder 51 is fixedly installed on the side of the detection box 4 away from the sliding frame 21. A piston is slidably installed inside the pneumatic cylinder 51. A pneumatic rod 511 is coaxially fixedly installed on the side of the piston away from the sliding frame 21. The other end of the pneumatic rod 511 extends out of the pneumatic cylinder 51. An air outlet pipe 52 is connected to the top of the pneumatic cylinder 51. The air outlet pipe 52 is connected to the first nozzle 42 and the second nozzle 431 respectively. The pneumatic rod 511 is used to squeeze the air inside the pneumatic cylinder 51 into the air outlet pipe 52. A return spring 512 is sleeved on the outside of the pneumatic rod 511. The return spring 512 is used to drive the pneumatic rod 511 to return to its original position away from the sliding frame 21. When the sliding box 5 moves towards the conveyor belt 1 under the drive of the sliding frame 21, the inner wall of the sliding box 5 abuts against one end of the pneumatic rod 511, causing the pneumatic rod 511 to compress the air inside the pneumatic cylinder 51.

[0048] Specifically, by setting a pneumatic cylinder 51 on one side of the detection box 4, and sliding a pneumatic rod 511 at the end of the pneumatic cylinder 51 away from the conveyor belt 1, when the pneumatic rod 511 moves toward the conveyor belt 1 (at this time, the sliding box 5 moves toward the middle of the conveyor belt 1 along with the sliding frame 21), it can drive the piston to squeeze the air inside the pneumatic cylinder 51, so that the air inside the pneumatic cylinder 51 enters the air outlet pipe 52 and is discharged from the first nozzle 42 and the second nozzle 431 respectively. When the pneumatic rod 511 moves away from the conveyor belt 1 (at this time, the sliding box 5 no longer blocks the pneumatic rod 511, and the pneumatic rod 511 is reset under the action of the return spring 512), the pneumatic rod 511 drives the piston to slide inside the pneumatic cylinder 51.

[0049] Furthermore, an air inlet pipe 53 is connected and installed below the pneumatic cylinder 51. The other end of the air inlet pipe 53 is connected to the inside of the dust collection box 44. The air inlet pipe 53 is used to draw air from the inside of the dust collection box 44 when the pneumatic rod 511 extends out of the pneumatic cylinder 51.

[0050] By setting an air inlet pipe 53 below the pneumatic cylinder 51 and connecting the other end of the air inlet pipe 53 to the inside of the dust collection box 44, when the pneumatic rod 511 moves away from the conveyor belt 1 (at this time, the sliding box 5 no longer blocks the pneumatic rod 511, and the pneumatic rod 511 is reset under the action of the return spring 512), the pneumatic rod 511 drives the piston to slide inside the pneumatic cylinder 51, so that a negative pressure is generated inside the pneumatic cylinder 51, causing the air inlet pipe 53 to draw gas from the dust collection box 44, which can completely suck the glue or dust inside the dust collection trough 4102 into the dust collection box 44.

[0051] It should be noted that both the intake pipe 53 and the exhaust pipe 52 are equipped with one-way valves to prevent gas backflow. Figure 5 The direction of the middle arrow indicates the direction of gas flow.

[0052] Working principle: When the mobile phone screen reaches the predetermined position, the sliding frame 21 installed on the support frame 2 moves horizontally above the conveyor belt 1 under the drive of the linear drive device; then, the adsorption mechanism 3, which is lifted and installed on the sliding frame 21, descends and grabs the mobile phone screen by vacuum adsorption or other methods. Then, the adsorption mechanism 3 rises and is driven by the sliding frame 21 to move horizontally to directly above the detection platform 41 above the detection box 4, accurately placing the mobile phone screen in the detection slot 4101 of the detection platform 41;

[0053] When the sliding box 5 starts to slide from one side of the inspection table 41 to the side of the conveyor belt 1, the scraper 46 fixed inside it starts to work. The guide rods 463 on both sides of the scraper 46 slide along the guide groove 401 on the side wall of the inspection box 4. The special contour of the guide groove 401 forces the guide rods 463 to press down, overcome the elastic force of the elastic element 462, and push the scraper 46 down to contact the mobile phone screen surface in the inspection groove 4101. As the sliding box 5 continues to move, the scraper 46 scrapes and cleans the glue or attachments on the screen surface. At the same time, the inspection camera 451 on the side of the mounting plate 45 away from the conveyor belt 1 collects images of the mobile phone screen surface.

[0054] After image acquisition is completed, the sliding frame 21 drives the adsorption mechanism 3 to move towards the detection platform 41 again, taking the tested mobile phone out of the detection platform 41 and placing it back on the conveyor belt. During this process, the sliding box 5 moves towards the conveyor belt 1, and its inner wall presses against the pneumatic rod 511 installed on the outside of the detection box 4, pushing it to compress the air inside the pneumatic cylinder 51. The compressed air is delivered to the first nozzle 42 and the second nozzle 431 on the detection platform 41 through the air outlet pipe 52. These nozzles blow high-speed airflow towards the detection groove 4101, blowing the particles scraped off by the scraper 46 and the original dust towards the dust collection groove 4102. The dust and particles blown into the dust collection groove 4102 finally fall into the dust collection box 44 through the connecting channel 441.

[0055] As the sliding frame 21 drives the adsorption mechanism 3 to carry the mobile phone screen onto the testing platform 41 again (in preparation for the next work cycle), the pneumatic rod 511 extends and resets under the action of the reset spring 512. This action generates negative pressure inside the pneumatic cylinder 51, and draws air from the dust collection box 44 through the air inlet pipe 53, thereby generating negative pressure inside the dust collection trough 4102, which can suck glue and particulate matter into the dust collection box.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A full-automatic mobile phone screen defect detection device, comprising a conveying belt (1), a supporting frame (2) is transversely installed above the conveying belt (1), a sliding frame (21) is linearly drivenly installed on the supporting frame (2), and a suction mechanism (3) is liftably installed on the sliding frame (21), characterized in that, One side of the conveying belt (1) is fixedly provided with a detection box (4), the detection box (4) is provided with a detection table (41) for detecting the mobile phone screen, and the adsorption mechanism (3) is used for placing the mobile phone screen on the conveying belt (1) on the detection table (41); The detection box (4) is provided with an opening at the top, a sliding box (5) is slidably arranged above the detection box (4), the sliding box (5) is provided with an opening at the bottom, and a detection camera (451) for image detection of the mobile phone screen in the detection table (41) is fixedly arranged in the sliding box (5); Wherein, one side of the sliding box (5) is fixedly connected with the sliding frame (21), the sliding box (5) is provided with a scraper (46) for scraping the glue on the surface of the mobile phone screen, and the scraper (46) is slid from the detection table (41) to the conveying belt (1) direction with the sliding box (5), and the surface of the mobile phone screen is processed before the detection camera (451) collects the image; The sliding box (5) is fixedly provided with a mounting plate (45), the detection camera (451) is fixedly arranged on one side of the mounting plate (45) away from the sliding frame (21), and the scraper (46) is liftly arranged below the mounting plate (45); The detection box (4) is provided with a guide groove (401) in the two sides facing each other, the two sides of the scraper (46) are fixedly provided with guide rods (463) for sliding in the guide groove (401), the guide groove (401) drives the scraper (46) to move downward when the scraper (46) slides to the sliding frame (21), the scraper (46) is fixedly provided with a slide rod (461) above, the slide rod (461) penetrates through the mounting plate (45) and is slidably connected with the mounting plate (45), and the slide rod (461) is provided with an elastic element (462) outside for driving the scraper (46) away from the mounting plate (45).

2. The full-automatic mobile phone screen defect detection device according to claim 1, characterized in that, The detection table (41) is provided with a detection groove (4101) for placing the mobile phone screen, a first nozzle (42) is arranged on one side of the detection groove (4101) away from the sliding frame (21), dust collecting grooves (4102) are arranged on both sides of one end of the detection groove (4101) facing the sliding frame (21), a supporting plate (43) is fixedly arranged between the two dust collecting grooves (4102), the upper end surface of the supporting plate (43) is flush with the bottom of the detection groove (4101), and second nozzles (431) are arranged on both sides of the supporting plate (43).

3. The full-automatic mobile phone screen defect detection device according to claim 2, characterized in that, The detection box (4) is fixedly provided with a dust collecting box (44) below, the dust collecting box (44) is provided with a communication channel (441) above, the communication channel (441) communicates with the inside of the dust collecting box (44), and the communication channel (441) penetrates through the bottom of the detection box (4) and the detection table (41) and communicates with the inside of the dust collecting groove (4102).

4. The full-automatic mobile phone screen defect detection device according to claim 3, characterized in that, The middle of the dust collecting box (44) is provided with a partition (442), the partition (442) comprises a vertical section and an inclined section, the upper side of the inclined section is inclined away from the lower opening side of the communication channel (441), and a plurality of communication holes are formed in the partition (442).

5. The full-automatic mobile phone screen defect detection device according to claim 4, characterized in that, The detection box (4) is fixedly installed with a pneumatic cylinder (51) away from one side of the sliding frame (21), the pneumatic cylinder (51) is internally slidably installed with a piston, the piston is coaxially fixedly installed with a pneumatic rod (511) away from one side of the sliding frame (21), the other end of the pneumatic rod (511) extends out of the pneumatic cylinder (51), the upper side of the pneumatic cylinder (51) is communicatively installed with an air outlet pipe (52), the air outlet pipe (52) is respectively communicated with the first nozzle (42) and the second nozzle (431), and the pneumatic rod (511) is used for extruding the air on the inner wall of the pneumatic cylinder (51) into the air outlet pipe (52).

6. The full-automatic mobile phone screen defect detection device according to claim 5, characterized in that, The outer side of the pneumatic rod (511) is sleeved with a reset spring (512), the reset spring (512) is used for driving the pneumatic rod (511) to reset in the direction away from the sliding frame (21), when the sliding box (5) is driven by the sliding frame (21) to move in the direction of the conveying belt (1), the inner wall of the sliding box (5) abuts against one end of the pneumatic rod (511), and the pneumatic rod (511) is driven to compress the air in the pneumatic cylinder (51).

7. The fully automatic mobile phone screen defect detection device according to claim 6, characterized in that, The lower side of the pneumatic cylinder (51) is communicatively installed with an air inlet pipe (53), the other end of the air inlet pipe (53) is communicated with the inside of the dust collecting box (44), and the air inlet pipe (53) is used for extracting air from the inside of the dust collecting box (44) when the pneumatic rod (511) extends out of the pneumatic cylinder (51).

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