CN115608628A - Screen detection system - Google Patents

Abstract

The invention provides a screen detection system, which comprises: the automatic detection device comprises a controller, and a feeding device, a conveying device, a picking device, a detecting device and a discharging device which are respectively electrically connected with the controller, wherein the feeding device, the conveying device, the picking device, the detecting device and the discharging device are sequentially arranged to form a detection assembly line; the feeding device comprises a separation unit, a conveying device and a control unit, wherein the separation unit separates a single screen to be detected from a plurality of stacked screens to be detected and conveys the single screen to be detected to the conveying device; according to the invention, the supporting module and the moving module in the separation unit are matched, so that a single screen to be detected is deformed, the deformed screen to be detected can be effectively separated from other screens to be detected which are adhered together, the separation unit can quickly and reliably separate the single screen to be detected from a plurality of stacked screens to be detected, the probability of halt of a screen detection system due to error reporting is reduced, and the reliability and continuity of screen detection work are improved.

Description

Screen detection system

Technical Field

The invention relates to the technical field of screen detection equipment, in particular to a screen detection system.

Background

At present, for the detection of a screen, especially for the detection of a glass screen of a mobile phone, a two-dimensional detection device (a two-dimensional measuring instrument) is generally used for measuring the external dimension of the screen. The detection mode to the screen mainly has two kinds among the prior art, firstly directly takes the screen that awaits measuring through the manual work and detects on quadratic element check out test set, and the manual work is put the screen back again after detecting, but the mode that detects manually has following problem: firstly, a screen to be detected is directly taken manually and tested on a quadratic element measuring device, the accuracy of a screen detection result is low easily due to the deviation of manual operation, secondly, the stability of the screen detection result is poor probably due to the problem of nonuniform operation of different personnel, and finally, the efficiency of manual detection is low; secondly, automatic detection is carried out through screen detection equipment, but the problem that a single screen to be detected cannot be rapidly and reliably separated from a plurality of stacked screens to be detected of the existing automatic screen detection equipment generally exists, when the stacked screens to be detected are conveyed to quadratic element detection equipment for detection, the problems of error reporting, halt and the like of the whole screen detection equipment occur, the reliability and the continuity of detection work are poor, and further the problems of low detection efficiency and inaccurate detection result are caused.

Disclosure of Invention

The invention provides a screen detection system, which aims to solve the problem that in the prior art, a screen detection device cannot rapidly and reliably separate a single screen to be detected from a plurality of stacked screens to be detected, so that the detection efficiency of the screen detection device is low.

In order to solve the above problems, the present invention provides a screen inspection system, including: the device comprises a controller, and a feeding device, a conveying device, a picking device, a detecting device and a discharging device which are respectively electrically connected with the controller, wherein the feeding device, the conveying device, the picking device, the detecting device and the discharging device are sequentially arranged to form a detection assembly line; the feeding device conveys a plurality of screens to be detected to the conveying device one by one, the picking device conveys the screens to be detected on the conveying device one by one to the detection device for detection, the detection device determines that the screens belong to screen types of good products or defective products after detecting the screens to be detected, the picking device conveys the screens detected at the detection device back to the conveying device again, the conveying device conveys the detected screens to the blanking device, and the controller controls the blanking device to classify and store the screens according to the screen types;

the feeding device comprises a separation unit, a conveying device and a control unit, wherein the separation unit separates a single screen to be detected from a plurality of stacked screens to be detected and conveys the single screen to be detected to the conveying device; the separation unit includes: the mobile module is detachably and fixedly matched with a single screen to be detected and drives the single screen to be detected to move; the support module butt is on the surface of waiting to examine the screen with the single of moving module fixed coordination, and support module and moving module cooperation make the single screen of examining to examine produce deformation to the screen is examined to the separation list.

Further, the separation unit further comprises a vibration module; the vibration module sets up on moving module, and under the support module butt was examined the state on screen surface singly, the vibration module drives singly to examine the screen and produces the vibration to separate out singly and examine the screen from a plurality of screens of examining of piling up.

Furthermore, the vibration module comprises a vibration rod and a vibration cylinder for driving the vibration rod to vibrate, the vibration cylinder is electrically connected with the controller, and the vibration cylinder is arranged on the moving module; the vibrating arm drives the single screen to be detected to vibrate.

Further, the vibration module still includes the elastic vibration head, and the elastic vibration head is close to the one end of examining the screen with the vibrating arm and is connected, and the vibrating arm is examined the screen contact through elastic vibration head and list and is driven and examine the screen vibration.

Further, the moving module includes: moving the support; the moving part is connected with the moving bracket and is used for driving the moving bracket to move; the fixed part is arranged on the movable support, and the fixed part is detachably fixedly matched with a single screen to be detected.

Furthermore, the fixed part comprises a plurality of sucker pieces which are arranged on the movable bracket at intervals; a plurality of suction disc pieces jointly adsorb a single screen to be inspected.

Further, the support module includes bracing piece and elastic head, and the bracing piece setting is on removing the module, and elastic head is close to the one end of examining the screen with the bracing piece and is connected, and elastic head with examine the screen butt.

Furthermore, the separation unit also comprises a detection module which is electrically connected with the controller; the detection module is used for detecting whether the screen to be detected fixedly matched with the mobile module is single or not.

Further, loading attachment still includes rotatory feed bin unit, and rotatory feed bin unit includes: a bin support; the bin bracket is arranged on the driving module; the first bin is arranged on the bin bracket and used for accommodating a plurality of stacked screens to be detected; the second storage bin is arranged on the storage bin bracket and is arranged at an interval with the first storage bin; the second bin is used for accommodating a plurality of stacked screens to be detected; wherein, drive module drive feed bin support rotates to switch first feed bin or second feed bin and rotate the operating position to the disengaging unit.

Further, first feed bin and second feed bin structure are the same, all include: the restraint frame body is arranged on the bin bracket; the tray is movably arranged in the constraint frame body and used for bearing the screen to be detected, an accommodating cavity is formed inside the tray and the constraint frame body and used for accommodating a plurality of stacked screens to be detected; the feeding motor is arranged on the stock bin support or the constraint support body, the feeding motor is connected with the tray in a driving mode, the feeding motor is electrically connected with the controller, the feeding motor controls the stacked multiple screens to be detected to move towards the direction close to the separation unit through controlling the tray to move along the inner wall of the constraint support body.

Further, the restraint support body includes: the adjusting chassis is arranged on the bin bracket, and the tray is parallel to the adjusting chassis; first alignment jig, second alignment jig, third alignment jig and fourth alignment jig, first alignment jig, second alignment jig, third alignment jig and fourth alignment jig movably set up respectively on adjusting the chassis, through the position of adjusting first alignment jig, second alignment jig, third alignment jig and fourth alignment jig, the size adaptation that the regulation holds the chamber is in waiting to examine the screen.

Further, the driving module includes: the driving cylinder comprises a telescopic rod capable of telescopic motion; the rack is connected with the telescopic rod and moves linearly in a reciprocating manner along with the telescopic rod; the gear is meshed with the rack; one end of the rotating fixing part is fixedly connected with the bin bracket, and the other end of the rotating fixing part is fixedly connected with the gear; wherein, drive actuating cylinder and pass through the cooperation of rack and gear, the rotatory fixed part of drive drives the feed bin support and rotates.

Furthermore, the driving module also comprises a driving shell, the driving shell is fixedly arranged, the driving cylinder is arranged in the driving shell, a sliding rail is arranged in the driving shell, and the rack is in sliding fit with the sliding rail; the gear is rotatably arranged in the driving shell; the driving module further comprises a buffer and a limiter which are respectively arranged on the driving shell, the buffer is used for buffering the movement of the rack, and the limiter limits the movement of the rack so as to restrict the movement range of the rack.

Further, loading attachment includes two rotatory feed bin units and two separator element, and two rotatory feed bin units set up respectively in conveyer's both sides, and separator element and rotatory feed bin unit one-to-one set up.

Further, the blanking device comprises a sorting unit, a good product unit and a defective product unit, the sorting unit is electrically connected with the controller, and the controller controls the sorting unit to convey the screen to the good product unit or the defective product unit for storage according to the type of the screen.

Further, the transfer device includes: the conveying belt to be detected is used for driving the screen to be detected to move towards the detection device; the inspected conveyor belt is used for driving the screen after the detection is finished to move towards the blanking device; the first sensor is electrically connected with the controller, the first sensor is arranged on the conveyor belt to be detected, and the controller controls the pickup device to convey the screen to be detected from the conveyor belt to be detected to the detection device under the condition that the first sensor senses the screen on the conveyor belt to be detected; the second sensor is electrically connected with the controller, the second sensor is arranged on the detected conveyor belt, and the controller controls the blanking device to store the screen in a classified manner according to the type of the screen under the condition that the second sensor senses the screen on the detected conveyor belt; the guide structure is arranged on the conveying belt to be detected; the guide structure is used for guiding the screen on the conveyor belt to be detected; wherein the detection device is positioned between the conveyor belt to be detected and the inspected conveyor belt.

Further, the pickup device includes: a pick-up stand; the power unit is used for driving the picking bracket to move close to or away from the conveying device or the detection device; pick up the unit, pick up the unit setting and pick up on the support, pick up the unit detachable and examine the screen fixed coordination with single, pick up the unit and include a plurality of sucking disc subassemblies, a plurality of sucking disc subassemblies adsorb jointly singly examine the screen.

Furthermore, the number of the picking units is two, the first picking unit and the second picking unit are respectively arranged on the picking support at intervals of a set distance, and the set distance is matched with the stroke of the power unit for driving the picking support to move, so that the screen to be inspected fixed by the first picking unit and the inspected screen fixed by the second picking unit respectively move to the detection device and the transmission device simultaneously.

Furthermore, the screen detection system also comprises an upper frame and a lower frame, wherein the upper frame is arranged above the lower frame; the separating unit is arranged on the upper frame, the conveying device is arranged on the lower frame and is positioned below the upper frame, the picking device is arranged on the upper frame, and the detecting device is arranged on the lower frame.

By applying the technical scheme of the invention, the invention provides a screen detection system, which comprises: the automatic detection device comprises a controller, and a feeding device, a conveying device, a picking device, a detecting device and a discharging device which are respectively electrically connected with the controller, wherein the feeding device, the conveying device, the picking device, the detecting device and the discharging device are sequentially arranged to form a detection assembly line; the feeding device conveys a plurality of screens to be detected to the conveying device one by one, the picking device conveys the screens to be detected on the conveying device one by one to the detection device for detection, the detection device determines that the screens belong to screen types of good products or defective products after detecting the screens to be detected, the picking device conveys the screens detected at the detection device back to the conveying device again, the conveying device conveys the detected screens to the blanking device, and the controller controls the blanking device to classify and store the screens according to the screen types; the feeding device comprises a separation unit, a conveying device and a control unit, wherein the separation unit separates a single screen to be detected from a plurality of stacked screens to be detected and conveys the single screen to be detected to the conveying device; the separation unit includes: the mobile module is detachably and fixedly matched with a single screen to be detected and drives the single screen to be detected to move; the support module butt is on the surface of waiting to examine the screen with the single of moving module fixed coordination, and support module and moving module cooperation make the single screen of examining to examine produce deformation to the screen is examined to the separation list. According to the invention, the supporting module and the moving module in the separation unit are matched, so that a single screen to be detected is deformed, the deformed screen to be detected can be effectively separated from other screens to be detected which are adhered together, the separation unit can quickly and reliably separate the single screen to be detected from a plurality of stacked screens to be detected, the probability of halt of a screen detection system due to error reporting is reduced, the reliability and continuity of screen detection work are improved, and the screen detection efficiency and the accuracy of a detection result are effectively improved; according to the invention, the controller, the feeding device, the conveying device, the picking device, the detecting device and the discharging device which are respectively and electrically connected with the controller are arranged, so that the screen detection system can automatically and rapidly perform continuous actions such as screen sorting, automatic conveying, automatic detection, automatic classified storage according to screen types and the like, and through intelligent control of the controller, the screen detection system has high automation degree and high detection efficiency, effectively saves manpower, and simultaneously ensures that the accuracy of screen detection meets the actual detection requirement.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram illustrating an internal structure of a screen detection system provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating an external structure of a screen inspection system provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram showing a specific structure of a separation unit provided by an embodiment of the present invention;

FIG. 4 is a schematic view showing a part of the structure of a separation unit provided in an embodiment of the present invention;

fig. 5 is a schematic diagram showing a specific structure of a rotary silo unit provided by an embodiment of the invention;

fig. 6 is a partial structural schematic diagram of a rotary silo unit provided by an embodiment of the invention;

fig. 7 is a schematic structural diagram of a driving module provided in an embodiment of the present invention;

FIG. 8 is a schematic diagram showing a specific structure of a conveyor belt to be inspected, provided by an embodiment of the invention;

FIG. 9 is a schematic diagram showing a specific structure of the inspected conveyer belt provided by the embodiment of the invention;

fig. 10 is a schematic structural diagram of a pickup device provided in an embodiment of the present invention;

fig. 11 shows a schematic view of a part of the structure of a sorting unit provided by an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a separation unit; 11. a moving module; 111. moving the support; 112. a moving part; 113. a fixed part; 1131. a chuck member; 12. a support module; 121. a support bar; 122. an elastic head; 13. a vibration module; 131. a vibrating rod; 132. a vibration cylinder; 133. an elastic vibrating head;

20. a rotary bin unit; 21. a bin support; 22. a drive module; 221. a driving cylinder; 222. a rack; 223. a gear; 224. a rotation fixing part; 225. a drive housing; 226. a buffer; 227. a stopper; 23. a first storage bin; 231. the frame body is restrained; 2311. adjusting the chassis; 2312. a first adjusting bracket; 2313. a second adjusting bracket; 2314. a third adjusting bracket; 2315. a fourth adjusting bracket; 232. a tray; 233. a feeding motor; 234. an accommodating chamber; 24. a second storage bin;

30. a conveying device; 31. a conveyor belt to be detected; 32. a inspected conveyor belt; 33. a first inductor; 34. a second inductor; 35. a guide structure;

40. a pickup device; 41. a pick-up stand; 42. a power unit; 43. a first pickup unit; 431. a sucker component; 44. a second pickup unit;

50. a detection device;

60. a blanking device; 61. a sorting unit; 62. a good product unit;

70. an upper frame;

80. a lower frame;

90. a housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 11, an embodiment of the present invention provides a screen inspection system, including: the automatic detection device comprises a controller, a feeding device, a conveying device 30, a picking device 40, a detecting device 50 and a discharging device 60 which are respectively and electrically connected with the controller, wherein the feeding device, the conveying device 30, the picking device 40, the detecting device 50 and the discharging device 60 are sequentially arranged to form a detection production line; the feeding device conveys a plurality of screens to be detected to the conveying device 30 one by one, the picking device 40 conveys the screens to be detected on the conveying device 30 one by one to the detection device 50 for detection, after the detection device 50 detects the screens to be detected, the screens are determined to belong to screen types of good products or defective products, the picking device 40 conveys the screens detected at the detection device 50 back to the conveying device 30 again, the conveying device 30 conveys the detected screens to the blanking device 60, and the controller controls the blanking device 60 to carry out classified storage on the screens according to the screen types;

wherein the feeding device includes a separating unit 10, the separating unit 10 separating a single screen to be inspected from a plurality of screens to be inspected stacked and conveying the single screen to be inspected to a conveying device 30; the separation unit 10 includes: the mobile module 11 is detachably and fixedly matched with a single screen to be detected and drives the single screen to be detected to move; the support module 12 butt is on the surface of waiting to examine the screen with the single of mobile module 11 fixed coordination, and support module 12 and mobile module 11 cooperation make the single screen of examining to examine produce deformation to separate the single screen of examining.

According to the invention, the supporting module 12 and the moving module 11 in the separating unit 10 are matched, so that a single screen to be detected is deformed, the deformed screen to be detected can be effectively separated from other screens to be detected which are adhered together, the separating unit 10 can quickly and reliably separate the single screen to be detected from a plurality of stacked screens to be detected, the probability of halt of a screen detection system due to error reporting is reduced, the reliability and continuity of screen detection work are improved, and the screen detection efficiency and the accuracy of a detection result are effectively improved; according to the invention, through the arrangement of the controller, the feeding device, the conveying device 30, the picking device 40, the detecting device 50 and the discharging device 60 which are respectively and electrically connected with the controller, the screen detection system can automatically and rapidly carry out continuous actions such as screen sorting, automatic conveying, automatic detection, automatic classified storage according to screen types and the like, through the intelligent control of the controller, the automation degree of the screen detection system is high, the detection efficiency is high, the manpower is effectively saved, and meanwhile, the accuracy of screen detection is ensured to meet the actual detection requirement.

As shown in fig. 3 and 4, the separation unit 10 further includes a vibration module 13; the vibration module 13 is arranged on the moving module 11, and the vibration module 13 drives a single screen to be inspected to generate vibration in a state that the support module 12 is abutted to the surface of the single screen to be inspected so as to separate the single screen to be inspected from a plurality of stacked screens to be inspected. By providing the vibration module 13, it is further ensured that the screen to be inspected and other screens to be inspected adhered thereto are effectively separated, so that the separation unit 10 can more quickly and reliably separate a single screen to be inspected from a plurality of screens to be inspected stacked.

As shown in fig. 4, the vibration module 13 includes a vibration rod 131 and a vibration cylinder 132 for driving the vibration rod 131 to vibrate, the vibration cylinder 132 is electrically connected to the controller, and the vibration cylinder 132 is disposed on the moving module 11; the vibrating rod 131 drives a single screen to be inspected to vibrate. By providing the vibration rod 131 and the vibration cylinder 132, it is ensured that the entire structure of the vibration module 13 is simplified, and that the vibration module 13 responds quickly under the control of the controller.

In one embodiment of the present invention, the vibration cylinder 132 is a threaded cylinder, which is simple in structure and reliable in operation.

Specifically, vibration module 13 still includes elastic vibration head 133, and elastic vibration head 133 is connected near the one end of examining the screen with vibrating arm 131, and vibrating arm 131 waits through elastic vibration head 133 with single to examine the screen contact and drive and examine the screen vibration. Through setting up elastic vibration head 133, further reduce vibration module 13 and treat the adverse effect of examining the screen when vibrating, effectively avoided waiting to examine the problem that the screen appears crackle or surface wear because of the vibration.

In one embodiment of the present invention, the elastic vibrating head 133 is a conventional high-strength rubber plug, which is elastic, reliable and low-cost.

As shown in fig. 3, the moving module 11 includes: a movable bracket 111; the moving part 112, the moving part 112 is connected with the moving bracket 111, and is used for driving the moving bracket 111 to move; and a fixing part 113, wherein the fixing part 113 is arranged on the movable bracket 111, and the fixing part 113 is detachably and fixedly matched with a single screen to be checked. Through setting up removal portion 112, movable support 111 and fixed part 113, removal portion 112 drives fixed part 113 and waits to examine the screen motion with fixed part fixed complex list through movable support 111, and the degree of freedom that moves is high, simple structure.

In an embodiment of the present invention, the moving part 112 employs a PPU manipulator assembly (i.e., a pick-and-place unit commonly found on an automatic production line) commonly found in the prior art, and through control of the control, the moving part 112 can move (including the degrees of freedom of movement such as lifting and horizontal) within its stroke range relatively quickly, and can stay at a specified position along a preset track, so that the moving precision is high, the work is reliable, and the purchase is convenient.

As shown in fig. 4, the fixing portion 113 includes a plurality of suction cup members 1131, and the suction cup members 1131 are arranged on the moving bracket 111 at intervals; the plurality of suction cups 1131 collectively suck a single screen to be inspected. Through setting up a plurality of sucking disc pieces 1131, guaranteed that fixed part 113 is to the single separable fixed of waiting to examine the screen, the mode of waiting to examine the screen of fixed single is got to the contrast clamp simultaneously, and a plurality of sucking disc pieces 1131 have effectively avoided waiting to examine the screen and have appeared crackle or surface wear's problem because of the actions such as the clamp is got.

It should be noted that, in an embodiment of the present invention, the suction cup piece 1131 adopts a common suction cup structure, that is, the suction cup structure cooperates with a common vacuum pump, the vacuum pump is connected to the suction cup through an air pipe, and the vacuum pump controls air pressure at the suction cup to realize separable fixing of a single screen to be inspected.

As shown in fig. 4, the supporting module 12 includes a supporting rod 121 and an elastic head 122, the supporting rod 121 is disposed on the moving module 11, the elastic head 122 is connected to one end of the supporting rod 121 close to the screen to be inspected, and the elastic head 122 abuts against the screen to be inspected. By arranging the elastic head 122, the flexible contact between the support module 12 and the screen to be detected is ensured, and the problem that the screen to be detected has cracks or surface abrasion due to the support force is effectively avoided; in one embodiment of the present invention, the elastic head 122 is a conventional high-strength rubber head, which is reliable and low-cost.

In one embodiment of the present invention, the fixing portion 113 includes four suction cup members 1131, and in operation, the four suction cup members 1131 are spaced apart on the surface of the screen to be inspected; the four sucker 1131 jointly suck a single screen to be detected, so that the simplification and the light weight of the whole structure of the fixing part 113 are effectively ensured; the whole length of bracing piece 121 and elastic head 122 slightly is greater than the length of four sucking disc pieces 1131, in order to guarantee to adsorb singly at four sucking disc pieces 1131 jointly and wait to examine the screen when, support module 12 supports the middle part of singly waiting to examine the screen, singly wait to examine the screen and take place deformation from the middle part, viewing angle in figure 4, singly wait to examine a surface deformation of screen and become the arcwall face, the arcwall face waits to examine with singly waiting to examine other of examining the screen lower part and examines the screen tangent, consequently can effectively with produce deformation wait to examine the screen and wait to examine the screen effective separation rather than other of examining that the adhesion is in the same place.

Specifically, the separation unit 10 further includes a detection module electrically connected to the controller; the detection module is used for detecting whether the screen to be detected fixedly matched with the mobile module 11 is single or not. Through setting up detection module, can effectively detect and wait to examine the screen with mobile module 11 fixed coordination whether be single, discerns when waiting to examine the screen with mobile module 11 fixed coordination and be single, can control vibration module 13 and stop vibrating, avoided because of vibration module 13 excessive vibration leads to waiting to examine the phenomenon that the screen takes place to damage, effectively improved detection efficiency.

It is worth mentioning that: in an embodiment of the present invention, the detecting module may adopt a mode of matching a photoelectric sensor and a light source, that is, the light source irradiates the screen to be detected fixedly matched with the moving module 11, and the photoelectric sensor detects parameters such as transmittance or refractive index of light passing through the screen to be detected, so as to sense whether the screen to be detected fixedly matched with the moving module 11 is single or not.

As shown in fig. 5, 6 and 7, the loading device further includes a rotary bin unit 20, and the rotary bin unit 20 includes: a bin support 21; the driving module 22, the bin support 21 is arranged on the driving module 22; the first bin 23, the first bin 23 is arranged on the bin bracket 21, and the first bin 23 is used for accommodating a plurality of stacked screens to be detected; the second storage bin 24 is arranged on the storage bin support 21 and is arranged at an interval with the first storage bin 23; the second bin 24 is used for accommodating a plurality of stacked screens to be inspected; wherein the driving module 22 drives the bin support 21 to rotate to switch the first bin 23 or the second bin 24 to rotate to the operation position of the separation unit 10. Through setting up drive module 22 drive feed bin support 21 and rotating to switch first feed bin 23 or second feed bin 24 and rotate to the operating position of separator element 10, guaranteed the quick material loading (promptly transport fast) of treating the screen of examining, effectively improved detection efficiency.

It is worth mentioning that, in the actual design, the number of the bins can be flexibly arranged on the bin support 21 according to the actual use requirement, so that a structure similar to a turntable is formed, and the rapidness of feeding is further ensured.

As shown in fig. 6, the first bin 23 and the second bin 24 have the same structure, and both include: the restraint frame body 231 is arranged on the stock bin support 21; the tray 232 is movably arranged in the constraint frame body 231, the tray 232 is used for bearing the screen to be detected, an accommodating cavity 234 is formed inside the tray 232 and the constraint frame body 231, and the accommodating cavity 234 is used for accommodating a plurality of stacked screens to be detected; the feeding motor 233 is arranged on the bin support 21 or the constraint frame 231, the feeding motor 233 is in driving connection with the tray 232, the feeding motor 233 is electrically connected with the controller, and the feeding motor 233 controls the stacked screens to be detected to move towards the direction close to the separation unit 10 by controlling the tray 232 to move along the inner wall of the constraint frame 231. The feeding motor 233 is arranged to drive the stacked screens to be detected to move towards the direction close to the separation unit 10 through the control tray 232, so that the rapid feeding of the screens to be detected is further ensured; the inside through setting up tray 232 and restraint support body 231 forms and holds chamber 234, has effectively guaranteed to the reliable of waiting to examine a plurality of screens that stack and has held, has avoided waiting to examine the problem appearance that the screen scatters.

It should be noted that: in an embodiment of the present invention, the feeding motor 233 is disposed on the bin support 21, and the feeding motor 233 is connected to the tray 232 by a belt, which is a belt or a synchronous belt, so as to ensure rapid movement and low working noise of the tray 232. In practical use, when a screen is taken away from the accommodating cavity 234 each time, the controller controls the feeding motor 233 to drive the tray 232 to move by the thickness of one screen along the inner wall of the restraining frame 231, so as to ensure that one end of the restraining frame 231 close to the separating unit 10 always contains the screen, which is convenient for the separating unit 10 to work.

As shown in fig. 6, the restraint frame 231 includes: an adjusting chassis 2311, wherein the adjusting chassis 2311 is arranged on the bin bracket 21, and the tray 232 is parallel to the adjusting chassis 2311; first alignment jig 2312, second alignment jig 2313, third alignment jig 2314 and fourth alignment jig 2315, first alignment jig 2312, second alignment jig 2313, third alignment jig 2314 and fourth alignment jig 2315 movably set up on adjusting chassis 2311 respectively, through adjusting the position of first alignment jig 2312, second alignment jig 2313, third alignment jig 2314 and fourth alignment jig 2315, the size adaptation of regulation accommodation chamber 234 is in waiting to examine the screen. Set up like this, effectively ensured the size that holds chamber 234 and the adaptation of waiting to examine the screen, improved restraint support body 231's commonality, and then make rotatory feed bin unit 20 be applicable to waiting to examine the screen of various sizes.

It is worth mentioning that: as shown in fig. 6, in an embodiment of the present invention, the restraining frame 231 is a sliding rail slider adjusting structure commonly found in the prior art, that is, an extending sliding rail is provided on the adjusting chassis 2311, the first adjusting frame 2312, the second adjusting frame 2313, the third adjusting frame 2314 and the fourth adjusting frame 2315 are movably arranged on the sliding rail through a sliding block (having freedom of movement in the front-back direction and the left-right direction on the horizontal plane in the view angle of fig. 6), the sliding block and the sliding rail are connected through a screw, the screw is rotated to adjust the distance between the first adjusting frame 2312 and the third adjusting frame 2314 through screw-thread fit (i.e., distance adjustment in the front-back direction), and the distance between the second adjusting frame 2313 and the fourth adjusting frame 2315 through screw-thread fit; and all be equipped with screw thread adjustment mechanism between first alignment jig 2312 and second alignment jig 2313, between third alignment jig 2314 and fourth alignment jig 2315, through adjusting screw thread adjustment mechanism, effectively adjust the distance (the distance about being about) between first alignment jig 2312 and the second alignment jig 2313, distance between third alignment jig 2314 and the fourth alignment jig 2315, realize the freedom to holding the chamber 234 size and adjust.

As shown in fig. 7, the driving module 22 includes: the driving cylinder 221, the driving cylinder 221 includes a telescopic rod capable of telescopic movement; the rack 222 is connected with the telescopic rod and moves linearly in a reciprocating manner along with the telescopic rod; a gear 223, the gear 223 being engaged with the rack 222; one end of the rotating fixing part 224 is fixedly connected with the bin support 21, and the other end of the rotating fixing part 224 is fixedly connected with the gear 223; the driving cylinder 221 drives the rotating fixing portion 224 to drive the bin support 21 to rotate through the matching of the rack 222 and the gear 223. Through the cooperation that sets up drive actuating cylinder 221 and pass through rack 222 and gear 223, the rotatory fixed part 224 of drive drives feed bin support 21 and rotates, has both guaranteed the speed of drive module 22 work, has guaranteed drive module 22 overall structure's simplification again to the maintenance in later stage.

As shown in fig. 7, the driving module 22 further includes a driving housing 225, the driving housing 225 is fixedly disposed, the driving cylinder 221 is disposed in the driving housing 225, a sliding rail is disposed inside the driving housing 225, and the rack 222 is slidably engaged with the sliding rail; gear 223 is rotatably disposed within drive housing 225; the driving module 22 further includes a buffer 226 and a stopper 227 respectively disposed on the driving housing 225, the buffer 226 being used for buffering the movement of the rack 222, and the stopper 227 stopping the movement of the rack 222 to restrict the movement range of the rack 222. By arranging the rack 222 to be in sliding fit with the sliding rail, the movement of the rack 222 is effectively restrained, the rack 222 is effectively prevented from being deviated, and the working stability is improved; the movement of the rack 222 is limited by arranging the limiter 227, the movement range of the rack 222 is effectively restricted, and the rotation angles of the first bin 23 and the second bin 24 relative to the bin support 21 are flexibly adjusted by adjusting the movement range of the rack 222 (for example, each time the driving module 22 works, the first bin 23 and the second bin 24 rotate 180 degrees relative to the bin support 21); by providing the damper 226, the movement of the rack 222 is effectively damped, the movement shock is avoided, and the operating noise is reduced.

In an embodiment of the present invention, a buffer 226 and a stopper 227 are disposed on both sides of the rack 222, so as to further ensure the reliable operation of the rack 222.

As shown in fig. 1, the feeding device includes two rotary bin units 20 and two separation units 10, the two rotary bin units 20 are respectively disposed at both sides of the conveying device 30, and the separation units 10 and the rotary bin units 20 are disposed in one-to-one correspondence. Through setting up two rotatory feed bin units 20 and two separator element 10, effectively improved loading attachment's material loading efficiency, and then improved screen detecting system's detection efficiency.

Specifically, the blanking device 60 comprises a sorting unit 61, a good product unit 62 and a defective product unit, wherein the sorting unit 61 is electrically connected with a controller, and the controller controls the sorting unit 61 to convey a screen to the good product unit 62 or the defective product unit for storage according to the type of the screen. By the arrangement, classified storage of the screen is effectively guaranteed.

It should be noted that in one embodiment of the present invention, the sorting unit 61 may adopt the same structure as the moving module 11 for screen transportation, i.e., the structure shown in fig. 11; the good product unit 62 and the defective product unit may also have the same structure as the rotary bin unit 20, that is, when a certain bin is full of storage, the inspected screen is continuously stored by switching empty bins through rotation.

As shown in fig. 8 and 9, the transfer device 30 includes: the conveying belt 31 to be detected is used for driving the screen to be detected to move towards the detection device 50; the inspected conveyor belt 32, the inspected conveyor belt 32 is used for driving the screen after the inspection to move towards the blanking device 60; a first sensor 33, the first sensor 33 being electrically connected to the controller, the first sensor 33 being disposed on the conveyor belt 31 to be inspected, the controller controlling the pick-up device 40 to convey the screen to be inspected from the conveyor belt 31 to the inspection device 50 in a state where the first sensor 33 senses the screen on the conveyor belt 31 to be inspected; the second sensor 34, the second sensor 34 is electrically connected with the controller, the second sensor 34 is arranged on the inspected conveyor belt 32, and the controller controls the blanking device 60 to store the screens according to the screen types under the condition that the second sensor 34 senses the screens on the inspected conveyor belt 32; the guide structure 35, the guide structure 35 is arranged on the conveyor belt 31 to be detected; the guide structure 35 is used for guiding the screen on the conveyor belt 31 to be detected; wherein the detection device 50 is located between the conveyor belt to be detected 31 and the conveyor belt to be detected 32. Through setting up and waiting to examine conveyer belt 31 and examined conveyer belt 32, guaranteed to wait to examine the transport of screen and examined the transport of screen and do not influence each other, effectively improved conveyer 30's transport efficiency. Through setting up guide structure 35, effectively treating the screen on the conveyer belt 31 of examining and leading, avoided the phenomenon that the screen scatters to take place.

It is worth mentioning that: the inspected conveyor belt 32 can also be provided with a guide structure 35, and the guide structure can be flexibly arranged according to actual use requirements. In a specific embodiment of the present invention, the guiding structure 35 is an arc-shaped guiding workpiece, so as to ensure that the guiding of the screen is softer and reduce the collision of the screen.

As shown in fig. 10, the pickup device 40 includes: a pickup holder 41; the power unit 42 is provided with the picking bracket 41, and the power unit 42 drives the picking bracket 41 to move close to or away from the conveying device 30 or the detecting device 50; the picking unit is arranged on the picking support 41 and detachably matched with a single screen to be inspected in a fixed mode, the picking unit comprises a plurality of sucker components 431, and the plurality of sucker components 431 jointly adsorb the single screen to be inspected. With such an arrangement, not only is the overall simplification of the pickup device 40 ensured, but also the operational reliability of the pickup device 40 is ensured.

Specifically, the number of the pickup units is two, and the first pickup unit 43 and the second pickup unit 44 are respectively provided at intervals of a set distance, the set distance is adapted to a stroke of the power unit 42 for driving the pickup bracket 41 to move, so that the screen to be inspected fixed to the first pickup unit 43 and the screen to be inspected fixed to the second pickup unit 44 are simultaneously moved to the detection device 50 and the transfer device 30, respectively. By setting the first pickup unit 43 and the second pickup unit 44, simultaneous conveyance at the detecting device 50 and the conveying device 30 is ensured, and the work efficiency of the pickup units is further improved.

As shown in fig. 1, the screen inspection system further includes an upper frame 70 and a lower frame 80, the upper frame 70 being disposed above the lower frame 80; the separating unit 10 is disposed on the upper frame 70, the transferring device 30 is disposed on the lower frame 80 and is located below the upper frame 70, the picking device 40 is disposed on the upper frame 70, and the detecting device 50 is disposed on the lower frame 80. By arranging the upper frame 70 and the lower frame 80, the detection assembly line is effectively borne, and reliable installation of each device is guaranteed.

It should be noted that, in a specific embodiment of the present invention, the lower frame 80 is provided with a horizontal adjustment mechanism and a universal wheel, and by providing the horizontal adjustment mechanism, the overall level of the screen detection system is ensured, no inclination occurs, and the detection accuracy is improved; through setting up the universal wheel, guaranteed screen detecting system's mobility.

In an embodiment of the present invention, as shown in fig. 2, the screen detecting system further includes a housing 90, the housing 90 has a mounting cavity therein, the feeding device, the conveying device 30, the picking device 40 and the discharging device 60 are all located in the mounting cavity, and the controller is disposed on the housing 90 to control the operation of the detecting assembly line; the detection device 50 is a two-dimensional detection device. Through setting up shell 90, both protected its inner structure, guaranteed again that the screen detects not disturbed by external environment.

In summary, the invention provides a screen detection system, and the support module 12 and the moving module 11 in the separation unit 10 are arranged to cooperate, so that a single screen to be detected is deformed, and the deformed screen to be detected can be effectively separated from other screens to be detected which are adhered together with the deformed screen to be detected, so that the separation unit 10 can quickly and reliably separate the single screen to be detected from a plurality of stacked screens to be detected, the probability of halt of the screen detection system due to error reporting is reduced, the reliability and continuity of screen detection work are improved, and further, the screen detection efficiency and the accuracy of detection results are effectively improved; according to the invention, the controller, the feeding device, the conveying device 30, the picking device 40, the detecting device 50 and the discharging device 60 are arranged, the screen detecting system can automatically and rapidly carry out screen sorting, automatic conveying, automatic detection, automatic classified storage according to screen types and other continuous actions, the screen detecting system is intelligently controlled by the controller, the automation degree of the screen detecting system is high, the detection efficiency is high, the manpower is effectively saved, and meanwhile, the accuracy of screen detection is ensured to meet the actual detection requirement.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (19)

1. A screen inspection system, the screen inspection system comprising: the automatic detection device comprises a controller, and a feeding device, a conveying device (30), a picking device (40), a detection device (50) and a discharging device (60) which are respectively electrically connected with the controller, wherein the feeding device, the conveying device (30), the picking device (40), the detection device (50) and the discharging device (60) are sequentially arranged to form a detection production line; the feeding device conveys a plurality of screens to be detected to the conveying device (30) one by one, the picking device (40) conveys the screens to be detected on the conveying device (30) to the detection device (50) one by one for detection, the detection device (50) determines the screen type of a good or defective screen after detecting the screen to be detected, the picking device (40) conveys the screen detected at the detection device (50) back to the conveying device (30) again, the conveying device (30) conveys the detected screen to the blanking device (60), and the controller controls the blanking device (60) to classify and store the screens according to the screen type;

wherein the feeding device comprises a separating unit (10), the separating unit (10) separating a single screen to be inspected from a plurality of stacked screens to be inspected and conveying the single screen to be inspected to the conveying device (30); the separation unit (10) comprises: the mobile module (11) is detachably and fixedly matched with a single screen to be detected, and drives the single screen to be detected to move; support module (12) butt with remove module (11) fixed complex list and wait to examine the surface of screen, support module (12) with remove module (11) cooperation and make the list wait to examine the screen and produce deformation to separate the list and wait to examine the screen.

2. The screen detection system according to claim 1, characterized in that the separation unit (10) further comprises a vibration module (13); vibration module (13) set up to be in on the removal module (11) support module (12) butt and examine under the state on screen surface singly, vibration module (13) drive singly examine the screen production vibration to separate out the list and examine the screen from a plurality of the examining of piling up in the screen.

3. The screen detecting system according to claim 2, characterized in that the vibrating module (13) comprises a vibrating rod (131) and a vibrating cylinder (132) for driving the vibrating rod (131) to vibrate, the vibrating cylinder (132) is electrically connected with the controller, the vibrating cylinder (132) is disposed on the moving module (11); the vibrating rod (131) drives a single screen to be detected to vibrate.

4. The screen detecting system of claim 3, wherein the vibration module (13) further comprises an elastic vibration head (133), the elastic vibration head (133) is connected with one end of the vibration rod (131) close to the screen to be inspected, the vibration rod (131) is connected with the single screen to be inspected through the elastic vibration head (133) and the single screen to be inspected are contacted to drive the screen to be inspected to vibrate.

5. The screen detection system according to claim 1, characterized in that the movement module (11) comprises:

a movable bracket (111);

the moving part (112), the moving part (112) is connected with the moving bracket (111) and is used for driving the moving bracket (111) to move;

the fixing part (113), the fixing part (113) sets up on the movable support (111), the detachable screen fixed coordination of waiting to examine of fixing part (113) and list.

6. The screen detecting system according to claim 5, characterized in that the fixing portion (113) comprises a plurality of suction disc members (1131), the plurality of suction disc members (1131) are arranged on the moving bracket (111) at intervals; a plurality of the suction disc pieces (1131) jointly adsorb a single screen to be inspected.

7. The screen detection system according to claim 1, wherein the support module (12) comprises a support rod (121) and an elastic head (122), the support rod (121) is arranged on the mobile module (11), the elastic head (122) is connected with one end of the support rod (121) close to the screen to be detected, and the elastic head (122) is abutted against the screen to be detected.

8. The screen detection system according to claim 1, wherein the separation unit (10) further comprises a detection module, the detection module being electrically connected to the controller; the detection module is used for detecting whether the screen to be detected is single or not, and the detection module is fixedly matched with the mobile module (11).

9. The screen detecting system according to claim 1, characterized in that the feeding device further comprises a rotary bin unit (20), the rotary bin unit (20) comprising:

a bin rack (21);

a drive module (22), on which the magazine holder (21) is arranged;

a first magazine (23), the first magazine (23) being disposed on the magazine support (21), the first magazine (23) being for accommodating a plurality of screens to be inspected stacked;

the second storage bin (24) is arranged on the storage bin support (21) and is arranged at an interval with the first storage bin (23); the second bin (24) is used for accommodating a plurality of stacked screens to be checked;

wherein the drive module (22) drives the silo support (21) to rotate in order to switch the first silo (23) or the second silo (24) to rotate into the operating position of the separation unit (10).

10. The screen detection system according to claim 9, characterized in that said first and second silos (23, 24) are structurally identical and each comprise:

a restraint frame body (231), the restraint frame body (231) being disposed on the bin support (21);

the tray (232) is movably arranged in the constraint frame body (231), the tray (232) is used for bearing a screen to be checked, an accommodating cavity (234) is formed inside the tray (232) and the constraint frame body (231), and the accommodating cavity (234) is used for accommodating a plurality of stacked screens to be checked;

pay-off motor (233), pay-off motor (233) sets up feed bin support (21) or on restraint support body (231), pay-off motor (233) with tray (232) drive is connected, pay-off motor (233) with the controller electricity is connected, pay-off motor (233) is through control tray (232) are followed the inner wall motion of restraint support body (231), control a plurality of that pile up wait to examine the screen to being close to the direction motion of detaching unit (10).

11. The screen detection system of claim 10, wherein the restraint frame (231) comprises:

an adjustment chassis (2311), said adjustment chassis (2311) being disposed on said bin support (21), said tray (232) being parallel to said adjustment chassis (2311);

the screen adjusting device comprises a first adjusting frame (2312), a second adjusting frame (2313), a third adjusting frame (2314) and a fourth adjusting frame (2315), wherein the first adjusting frame (2312), the second adjusting frame (2313), the third adjusting frame (2314) and the fourth adjusting frame (2315) are respectively movably arranged on the adjusting chassis (2311), and the size of the accommodating cavity (234) is adjusted to be matched with a screen to be detected by adjusting the positions of the first adjusting frame (2312), the second adjusting frame (2313), the third adjusting frame (2314) and the fourth adjusting frame (2315).

12. The screen detection system according to claim 9, characterized in that the drive module (22) comprises:

the device comprises a driving cylinder (221), wherein the driving cylinder (221) comprises a telescopic rod capable of telescopic motion;

the rack (222) is connected with the telescopic rod and moves in a reciprocating linear mode along with the telescopic rod;

a gear (223), the gear (223) being engaged with the rack (222);

one end of the rotating fixing part (224) is fixedly connected with the bin support (21), and the other end of the rotating fixing part (224) is fixedly connected with the gear (223);

the driving cylinder (221) drives the rotating fixing part (224) to drive the bin support (21) to rotate through the matching of the rack (222) and the gear (223).

13. The screen detecting system according to claim 12, characterized in that the driving module (22) further comprises a driving housing (225), the driving housing (225) is fixedly arranged, the driving cylinder (221) is arranged in the driving housing (225), the driving housing (225) is internally provided with a sliding rail, and the rack (222) is in sliding fit with the sliding rail; the gear (223) is rotatably disposed within the drive housing (225); the driving module (22) further comprises a buffer (226) and a limiter (227) which are respectively arranged on the driving shell (225), the buffer (226) is used for buffering the movement of the rack (222), and the limiter (227) limits the movement of the rack (222) so as to restrict the movement range of the rack (222).

14. The screen detecting system according to claim 9, characterized in that the feeding device comprises two rotary bin units (20) and two separation units (10), the two rotary bin units (20) are respectively arranged at two sides of the conveying device (30), and the separation units (10) and the rotary bin units (20) are arranged in a one-to-one correspondence.

15. The screen detection system according to claim 1, wherein the blanking device (60) comprises a sorting unit (61), a good unit (62) and a bad unit, the sorting unit (61) is electrically connected with the controller, and the controller controls the sorting unit (61) to convey a screen to the good unit (62) or the bad unit for storage according to the screen type.

16. The screen detection system according to claim 1, characterized in that the transport means (30) comprise:

the to-be-detected conveying belt (31) is used for driving the to-be-detected screen to move towards the detection device (50);

the inspected conveyor belt (32), the inspected conveyor belt (32) is used for driving the screen after the inspection is finished to move towards the blanking device (60);

a first sensor (33), wherein the first sensor (33) is electrically connected with the controller, the first sensor (33) is arranged on the conveyor belt to be detected (31), and the controller controls the picking device (40) to convey the screen to be detected from the conveyor belt to be detected (31) to the detection device (50) under the condition that the first sensor (33) senses the screen on the conveyor belt to be detected (31);

the second sensor (34), the second sensor (34) is electrically connected with the controller, the second sensor (34) is arranged on the inspected conveyor belt (32), and the controller controls the blanking device (60) to classify and store the screens according to the screen types under the condition that the second sensor (34) senses the screens on the inspected conveyor belt (32);

a guide structure (35), wherein the guide structure (35) is arranged on the conveyor belt (31) to be detected; the guide structure (35) is used for guiding the screen on the conveyor belt (31) to be detected;

wherein the detection device (50) is located between the conveyor belt to be detected (31) and the inspected conveyor belt (32).

17. The screen detection system according to claim 1, characterized in that the pick-up device (40) comprises:

a pickup holder (41);

the power unit (42) is used for arranging the picking bracket (41) on the power unit (42), and the power unit (42) drives the picking bracket (41) to move close to or away from the conveying device (30) or the detecting device (50);

pick up the unit, it sets up to pick up the unit pick up on support (41), pick up the unit detachable with singly wait to examine screen fixed coordination, it includes a plurality of sucking disc subassemblies (431), a plurality of sucking disc subassembly (431) adsorb singly jointly and wait to examine the screen.

18. The screen detecting system according to claim 17, characterized in that the number of the picking units is two, respectively a first picking unit (43) and a second picking unit (44), the first picking unit (43) and the second picking unit (44) are arranged on the picking bracket (41) at intervals of a set distance, the set distance is adapted to a stroke of the power unit (42) for driving the picking bracket (41) to move, so that a screen to be inspected fixed with the first picking unit (43) and a screen to be inspected fixed with the second picking unit (44) move to the detecting device (50) and the conveying device (30) at the same time, respectively.

19. The screen inspection system of claim 1, further comprising an upper stand (70) and a lower stand (80), the upper stand (70) disposed above the lower stand (80); the separating unit (10) is arranged on the upper rack (70), the conveying device (30) is arranged on the lower rack (80) and located below the upper rack (70), the picking device (40) is arranged on the upper rack (70), and the detecting device (50) is arranged on the lower rack (80).

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