Automatic detection equipment for LCD screen defects

Abstract

The present invention discloses an automatic detection device for defects of liquid crystal screens, which comprises a machine base, a first transfer mechanism, a first detection mechanism, a second transfer mechanism, a second detection mechanism, a third transfer mechanism, a labeling mechanism, a fourth transfer mechanism and a fifth transfer mechanism; the first transfer mechanism is used to grab the liquid crystal screen to be detected and move it; the first detection mechanism is used to perform appearance detection on one side of the liquid crystal screen; the second transfer mechanism and the first transfer mechanism are used to carry the liquid crystal screen to be detected and move it; the second detection mechanism is used to perform appearance detection on the other side of the liquid crystal screen; the third transfer mechanism is used to transfer the liquid crystal screen to the fourth transfer mechanism; the labeling mechanism is used to unwind the label tape and separate the label tape label and the backing paper; the fifth transfer mechanism is used to pick up the label and label it; the fourth transfer mechanism is used to carry the liquid crystal screen to move backward for unloading. The present invention greatly improves the detection efficiency and labeling efficiency of the liquid crystal screen, and can ensure the accuracy of the labeled labels.

Description

Technical Field

[0001] The present invention relates to the technical field of visual inspection, and in particular to an automatic inspection device for defects of a liquid crystal screen. Background Art

[0002] LCD screens have the advantages of small size, low power consumption, and low radiation, and have been increasingly widely used in electronic devices. During the production process, LCD screens are prone to poor appearances such as foreign matter and screen scratches. Therefore, it is very necessary to inspect the appearance of LCD screens to prevent the flow of LCD screens with poor appearance. After the finished LCD screens pass the appearance and defect inspections, they need to undergo a labeling process to allow the products to flow to the customer end.

[0003] At present, machine vision is generally used to inspect the appearance of LCD screens. Machine vision includes an image acquisition unit and an image processing unit. The image acquisition unit acquires the image of the LCD screen to be inspected, and then the image processing unit processes the image to finally obtain the appearance of the LCD screen. The existing inspection equipment can only inspect one side (front or back) of the LCD screen at a time. When inspecting the other side of the LCD screen, it is necessary to repeatedly load and unload the materials, which makes the efficiency of LCD screen inspection low. At the same time, many of the labeling of LCD screens that have passed the appearance inspection is done manually, that is, the operator manually labels the LCD screen after the inspection is qualified. This method is not only inefficient in labeling, but also the accuracy of the manually affixed labels on the LCD screen cannot be guaranteed. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic detection device for liquid crystal screen defects, which not only improves the efficiency of liquid crystal screen appearance detection, but also improves the efficiency of labeling of liquid crystal screens, ensuring the accuracy of the labels.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An automatic detection device for defects of a liquid crystal screen comprises a base, a first transfer mechanism arranged on the base, a first detection mechanism, a second transfer mechanism, a second detection mechanism, a third transfer mechanism, a labeling mechanism, a fourth transfer mechanism and a fifth transfer mechanism;

[0007] The first transfer mechanism is used to grab the LCD screen to be tested and move it along the lateral direction of the base;

[0008] The first detection mechanism is used to perform appearance detection on one side of the grasped and moved LCD screen;

[0009] The second transfer mechanism is connected to the first transfer mechanism, and is used to carry the LCD screen to be tested and move it along the lateral direction of the base;

[0010] The second detection mechanism is used to perform appearance detection on the other side of the liquid crystal screen that carries the movement;

[0011] The third transfer mechanism is connected to the second transfer mechanism and is used to transfer the LCD screen to the fourth transfer mechanism;

[0012] The labeling mechanism is used for unwinding the label tape and separating the label tape label from the backing paper;

[0013] The fifth transfer mechanism is used to pick up the separated labels and transfer the labels to the liquid crystal screen after the appearance inspection by the first inspection mechanism and the second inspection mechanism for labeling;

[0014] The fourth transfer mechanism is connected with the third transfer mechanism, and is used to carry the liquid crystal screen and move it backward along the lateral direction of the base for unloading.

[0015] Preferably, the first transfer mechanism comprises a first transverse moving assembly, a first vertical moving assembly and a first grabbing assembly, wherein the first transverse moving assembly is used to drive the first vertical moving assembly to move in the transverse direction of the base, the first vertical moving assembly is used to drive the first grabbing assembly to move in the vertical direction of the base, and the first grabbing assembly is used to grab the LCD screen to be detected;

[0016] The second transfer mechanism includes a second transfer platform and a second transverse movement assembly, the first transfer mechanism grabs the LCD screen to be inspected and translates it to the second transfer platform, and the second transverse movement assembly is used to drive the second transfer platform to move in the transverse direction of the base;

[0017] The first detection mechanism is arranged within the transfer range of the first transfer mechanism and is located below the first grabbing assembly, and the first detection mechanism performs appearance detection on the back of the to-be-detected LCD screen that is grabbed and translated by the first grabbing assembly;

[0018] The second detection mechanism is arranged within the transfer range of the second transfer mechanism, and is used to perform appearance detection on the front side of the to-be-detected liquid crystal screen on the second transfer platform.

[0019] Preferably, the first transverse movement assembly includes a first bracket, a first linear module and a first slide, the first bracket is arranged on the machine base, the first linear module is arranged on the first bracket, and is used to drive the first slide to move transversely, the first vertical movement assembly includes a first mounting plate, a first cylinder and a second mounting plate, the first mounting plate is arranged on the first slide, the first cylinder is arranged on the first mounting plate, the second mounting plate is fixed on the piston rod of the first cylinder, the first grabbing assembly includes a first suction cup and a plurality of vacuum suction rods arranged on the first suction cup, and the first suction cup is arranged on the second mounting plate;

[0020] The second transverse movement assembly includes a second linear module and a second slide. The second linear module is arranged on the machine base and is used to drive the second slide to move transversely. The second transfer platform is arranged on the second slide.

[0021] Preferably, the first detection mechanism comprises a first mounting frame, a first light source assembly and a first imaging assembly respectively arranged on the first mounting frame, the first mounting frame is arranged on the machine base and is located below the first grabbing assembly, the first light source assembly is used to provide fill light to the back side of the LCD screen to be detected, and the first imaging assembly is used to collect image information of the back side of the LCD screen to be detected;

[0022] The second detection mechanism includes a second mounting frame, a third mounting frame, a second light source assembly and a second imaging assembly. The second mounting frame is mounted on the machine base, the third mounting frame is located above the second mounting frame, the second light source assembly is mounted on the second mounting frame and is located above the second transfer platform, the second light source assembly is used to fill in the light of the front of the LCD screen to be detected on the second transfer platform, the second imaging assembly is mounted on the third mounting frame and is located above the second light source assembly, and the second imaging assembly is used to collect image information of the front of the LCD screen to be detected.

[0023] Preferably, the first light source assembly includes a first light source and a second light source disposed on the first mounting frame, and the first light source and the second light source are respectively located on both sides above the first imaging assembly; the first imaging assembly includes a third mounting plate and a first camera, the third mounting plate is disposed on the first mounting frame, and the first camera is disposed on the third mounting plate;

[0024] The second light source assembly includes a third light source and a fourth light source arranged on the second mounting bracket, and the third light source and the fourth light source are respectively located on both sides below the first imaging assembly; the second imaging assembly includes a fifth mounting plate and a second camera, the fifth mounting plate is arranged on the third mounting bracket, and the second camera is arranged on the fifth mounting plate.

[0025] Preferably, it also includes a positioning component;

[0026] The third transfer mechanism includes a third longitudinal movement assembly, a third vertical movement assembly and a third grabbing assembly, wherein the third longitudinal movement assembly is used to drive the third vertical movement assembly to move along the longitudinal direction of the base, the third vertical movement assembly is used to drive the third grabbing assembly to move along the vertical direction of the base, and the third grabbing assembly is used to grab the LCD screen on the second transfer platform;

[0027] The fourth transfer mechanism comprises a fourth transfer platform and a fourth transverse movement assembly, wherein the fourth transfer platform is used to place the liquid crystal screen, and the fourth transverse movement assembly is used to drive the fourth transfer platform to move in the transverse direction of the base;

[0028] The positioning component is arranged directly above the fourth transfer mechanism, and is used to locate the labeling position of the LCD screen placed on the fourth transfer platform;

[0029] The labeling mechanism is arranged on the side of the fourth transfer mechanism, and comprises a mounting seat and an unwinder, a label stripping plate and a rewinder arranged on the mounting seat, wherein the label stripping plate is used to separate the label and the base paper of the label tape unwinded by the unwinder, and the rewinder is used to rewind the base paper;

[0030] The fifth transfer mechanism is used to pick up the label on the label stripping plate and transfer the label to the labeling position of the liquid crystal screen on the fourth transfer platform for labeling.

[0031] Preferably, the third longitudinal movement assembly includes a third bracket, a third linear module and a third slide, the third bracket is arranged on the machine base, the third linear module is arranged on the third bracket, and is used to drive the third slide to move longitudinally, the third vertical movement assembly includes a seventh mounting plate, a third cylinder and an eighth mounting plate, the seventh mounting plate is arranged on the third slide, the third cylinder is arranged on the seventh mounting plate, the eighth mounting plate is fixed on the piston rod of the third cylinder, the third grabbing assembly includes a third suction cup and a plurality of third suction rods arranged on the third suction cup, and the third suction cup is arranged on the eighth mounting plate;

[0032] The fourth transverse movement assembly includes a fourth linear module and a fourth slide, the fourth linear module is arranged on the machine base, and is used to drive the fourth slide to move transversely, and the fourth transfer platform is arranged on the fourth slide;

[0033] The positioning component adopts a positioning camera, which is used to collect an image of the labeling position of the LCD screen on the fourth transfer table;

[0034] The fifth transfer mechanism includes a fifth longitudinal movement component, a fifth vertical movement component and a fifth grabbing component. The fifth longitudinal movement component is used to drive the fifth vertical movement component to move along the longitudinal direction of the base. The fifth vertical movement component is used to drive the fifth grabbing component to move along the vertical direction of the base. The fifth grabbing component is used to pick up the label on the stripping plate.

[0035] Preferably, the fifth longitudinal movement assembly includes a fifth bracket, a fifth linear module and a fifth slide, the fifth bracket is arranged on the machine base, the fifth linear module is arranged on the fifth bracket, and is used to drive the fifth slide for longitudinal movement, the fifth vertical movement assembly includes a ninth mounting plate, a fifth motor, a screw and a screw pair, the ninth mounting plate is arranged on the fifth slide, the fifth motor and the screw are arranged on the ninth mounting plate, the screw is connected to the machine shaft of the fifth motor, and the screw pair cooperates with the screw, the fifth grasping assembly includes a tenth mounting plate and a suction nozzle, the tenth mounting plate is fixed on the screw pair, and the suction nozzle is arranged on the tenth mounting plate.

[0036] Preferably, a loading mechanism and a unloading mechanism are respectively provided at the front end and the rear end of the machine base; the loading mechanism comprises a loading conveyor line, a first positioning member and a second positioning member, the loading conveyor line is provided on the machine base, and the first positioning member and the second positioning member are respectively provided on two adjacent sides of the loading conveyor line, and are used to position the LCD screen to be tested in the loading conveyor line, so that the first transfer mechanism can grab the LCD screen to be tested;

[0037] The unloading mechanism includes a sixth transfer mechanism and an unloading conveyor line. The sixth transfer mechanism is used to transfer the LCD screen on the fourth transfer platform to the unloading conveyor line. The sixth transfer mechanism includes a sixth transverse movement component, a sixth longitudinal movement component, a sixth vertical movement component and a sixth grasping component. The sixth transverse movement component is used to drive the sixth longitudinal movement component to move along the transverse direction of the base, the sixth longitudinal movement component is used to drive the sixth vertical movement component to move along the longitudinal direction of the base, the sixth vertical movement component is used to drive the sixth grasping component to move along the vertical direction of the base, and the sixth grasping component is used to grasp the LCD screen on the fourth transfer platform.

[0038] Preferably, the first positioning member is arranged at the side of the feeding conveyor line and is perpendicular to the conveying direction of the feeding conveyor line. The first positioning member includes a first positioning cylinder and a first push plate, and the first push plate is connected to the piston rod of the first positioning cylinder. The second positioning member is arranged at the end of the feeding conveyor line in the conveying direction, and includes a second positioning cylinder and a second push plate, and the second push plate is connected to the piston rod of the second positioning cylinder.

[0039] The sixth transverse movement assembly includes a sixth bracket, a sixth linear module and a sixth slide, the sixth bracket is arranged on the machine base, the sixth linear module is arranged on the sixth bracket, and is used to drive the sixth slide to move transversely, the sixth longitudinal movement assembly includes a seventh bracket, a seventh linear module and a seventh slide, the seventh bracket is arranged on the sixth slide, the seventh linear module is arranged on the seventh bracket, and is used to drive the seventh slide to move longitudinally, the sixth vertical movement assembly includes an eleventh mounting plate, a sixth cylinder and a twelfth mounting plate, the eleventh mounting plate is arranged on the seventh slide, the sixth cylinder is arranged on the eleventh mounting plate, and the twelfth mounting plate is fixed on the piston rod of the sixth cylinder, the sixth grasping assembly includes a sixth suction cup and a plurality of sixth suction rods arranged on the sixth suction cup, and the sixth suction cup is arranged on the twelfth mounting plate.

[0040] After adopting the above technical solution, the present invention has the following advantages compared with the background technology:

[0041] 1. The present invention performs appearance inspection on one side of the LCD screen to be inspected which is grasped and laterally moved by the first transfer mechanism through the first inspection mechanism, and then performs appearance inspection on the other side of the LCD screen which is carried and laterally moved by the second transfer mechanism through the second inspection mechanism. The appearance inspection is performed on the front side of the LCD screen to be inspected on the second transfer platform, and the appearance inspection on both sides of the LCD screen can be completed at one time, which greatly improves the inspection efficiency of the LCD screen.

[0042] 2. The present invention picks up the labels separated by the labeling mechanism through the fifth transfer mechanism, and transfers the labels to the labeling position of the LCD screen after the appearance inspection is qualified for labeling, which not only improves the labeling efficiency of the LCD screen, but also ensures the accuracy of the labeled labels.

[0043] 3. The present invention provides a loading mechanism and a unloading mechanism at the front end and the end of the machine base, respectively. The loading mechanism is used to automatically load the LCD screen to be tested, and the unloading mechanism is used to unload the tested LCD screen, which can further improve the overall working efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0045] Figure 2 It is a three-dimensional schematic diagram of the present invention (without the frame);

[0046] Figure 3 It is a three-dimensional schematic diagram of the feeding mechanism;

[0047] Figure 4 It is one of the partial structural schematic diagrams of the present invention (appearance detection part);

[0048] Figure 5This is the second partial structural diagram of the present invention (appearance detection part);

[0049] Figure 6 It is one of the structural schematic diagrams of the first detection mechanism;

[0050] Figure 7 This is the second structural diagram of the first detection mechanism;

[0051] Figure 8 is a schematic structural diagram of a first imaging component;

[0052] Fig. 9 is a structural schematic diagram of a second detection mechanism;

[0053] Fig.10 is a schematic diagram of installing the second light source assembly;

[0054] Fig.11 is a schematic structural diagram of a second imaging component;

[0055] Fig.12 This is the third partial structural diagram of the present invention (labeling part);

[0056] Fig.13 This is the fourth partial structural diagram of the present invention (labeling part);

[0057] Fig.14 This is the fifth partial structural diagram of the present invention (labeling part);

[0058] Fig.15 This is the sixth partial structural diagram of the present invention (labeling part);

[0059] Fig.16 This is the seventh partial structural diagram of the present invention (labeling part);

[0060] Fig.17 is a partial structural schematic diagram of the fifth transfer mechanism;

[0061] Fig.18 It is a structural diagram of the labeling mechanism;

[0062] Fig.19 The eighth schematic diagram of the local structure of the present invention (the blanking part);

[0063] Fig. 20 It is a structural schematic diagram of the sixth transfer mechanism.

[0064] Description of reference numerals:

[0065] A machine base 100 and a frame 110;

[0066] The first transfer mechanism 1, the first bracket 111, the first linear module 112, the first slide 113, the first mounting plate 121, the first cylinder 122, the second mounting plate 123, the first suction cup 131, and the vacuum suction rod 132;

[0067] The second transfer mechanism 2, the second transfer platform 21, the second linear module 221, and the second slide 222;

[0068] The first detection mechanism 3, the first mounting frame 31, the first light source assembly 32, the first light source 321, the second light source 322, the second bracket 323, the first adjustment slot 3231, the first imaging assembly 33, the third mounting plate 331, the first camera 332, the first guide rail 333, the fourth mounting plate 334, the first slider 335, the first connecting seat 336, and the first adjustment rod 337;

[0069] The second detection mechanism 4, the second mounting frame 41, the third mounting frame 42, the second light source assembly 43, the third light source 431, the fourth light source 432, the third bracket 433, the second adjustment slot 4331, the second imaging assembly 44, the fifth mounting plate 441, the second camera 442, the second guide rail 443, the sixth mounting plate 444, the second slider 445, the second connecting seat 446, and the second adjustment rod 447;

[0070] The third transfer mechanism 5, the third bracket 511, the third linear module 512, the third slide 513, the seventh mounting plate 521, the third cylinder 522, the eighth mounting plate 523, the third suction cup 531, and the third suction rod 532;

[0071] The fourth transfer mechanism 6, the fourth transfer platform 61, the fourth linear module 621, and the fourth slide 622;

[0072] Positioning component 7;

[0073] Labeling mechanism 8, mounting seat 81, unwinder 82, label stripping plate 83, rewinder 84;

[0074] The fifth transfer mechanism 9, the fifth bracket 911, the fifth linear module 912, the fifth slide 913, the ninth mounting plate 921, the fifth motor 922, the screw 923, the screw pair 924, the tenth mounting plate 931, and the suction nozzle 932;

[0075] A feeding mechanism 1000, a feeding conveying line 1100, a first positioning cylinder 1210, a first push plate 1220, a second positioning cylinder 1310, and a second push plate 1320;

[0076] The unloading mechanism 2000, the sixth transfer mechanism 2100, the sixth bracket 2111, the sixth linear module 2112, the sixth slide 2113, the seventh bracket 2121, the seventh linear module 2122, the seventh slide 2123, the eleventh mounting plate 2131, the sixth cylinder 2132, the twelfth mounting plate 2133, the sixth suction cup 2141, the sixth suction rod 2142, and the unloading conveyor line 2200. DETAILED DESCRIPTION

[0077] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0078] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0079] Example

[0080] Cooperate Figures 1 to 3 As shown, the present invention discloses an automatic detection device for liquid crystal screen defects, including a base 100, a first transfer mechanism 1 arranged on the base 100, a second transfer mechanism 2, a first detection mechanism 3, a second detection mechanism 4, a third transfer mechanism 5, a fourth transfer mechanism 6, a positioning component 7, a labeling mechanism 8 and a fifth transfer mechanism 9.

[0081] A loading mechanism 1000 is provided at the front end of the machine base 100. The loading mechanism 1000 includes a loading conveyor line 1100, a first positioning member and a second positioning member. The loading conveyor line 1100 is provided on the machine base 100 and is arranged along the longitudinal direction of the machine base 100. The first positioning member and the second positioning member are respectively provided on two adjacent side edges of the loading conveyor line 1100, and are used to position the LCD screen to be tested in the loading conveyor line 1100 so that the first transfer mechanism 1 can grab the LCD screen to be tested. The first positioning member is arranged on the side of the feeding conveyor line 1100 and is perpendicular to the conveying direction of the feeding conveyor line 1100. The first positioning member includes a first positioning cylinder 1210 and a first push plate 1220. The first push plate 1220 is connected to the piston rod of the first positioning cylinder 1210. The second positioning member is arranged at the end of the feeding conveyor line 1100 in the conveying direction, and includes a second positioning cylinder 1310 and a second push plate 1320. The second push plate 1320 is connected to the piston rod of the second positioning cylinder 1310.

[0082] The LCD screen is loaded, the first positioning cylinder 1210 drives the first push plate 1220 to push the LCD screen to be tested to a position in the middle of the loading conveyor line 1100, and the LCD screen to be tested is transported backward along the loading conveyor line 1100, and the second positioning cylinder 1310 drives the second push plate 1320 to push the LCD screen to be tested forward, so that the LCD screen to be tested is located directly below the grabbing position of the first transfer mechanism 1.

[0083] Cooperate Figure 2 , Figure 4 and Figure 5 As shown, the first transfer mechanism 1 is used to grab the LCD screen to be tested and move it laterally along the base 100. The first transfer mechanism 1 includes a first transverse movement component, a first vertical movement component and a first grabbing component. The first transverse movement component is used to drive the first vertical movement component to move laterally along the base 100, the first vertical movement component is used to drive the first grabbing component to move vertically along the base 100, and the first grabbing component is used to grab the LCD screen to be tested.

[0084] The first transverse movement assembly includes a first bracket 111, a first linear module 112 and a first slide 113. The first bracket 111 is arranged on the machine base 100. The first linear module 112 is arranged on the first bracket 111 and is used to drive the first slide 113 to move transversely; the first vertical movement assembly includes a first mounting plate 121, a first cylinder 122 and a second mounting plate 123. The first mounting plate 121 is arranged on the first slide 113, the first cylinder 122 is arranged on the first mounting plate 121, and the second mounting plate 123 is fixed on the piston rod of the first cylinder 122; the first grasping assembly includes a first suction cup 131 and a plurality of vacuum suction rods 132 arranged on the first suction cup 131. The first suction cup 131 is arranged on the second mounting plate 123.

[0085] The second transfer mechanism 2 is connected with the first transfer mechanism 1, and is used to carry the LCD screen to be tested and move it along the lateral direction of the base 100. The second transfer mechanism 2 includes a second transfer platform 21 and a second transverse movement assembly. The first transfer mechanism 1 grabs the LCD screen to be tested and translates it to the second transfer platform 21. The second transverse movement assembly is used to drive the second transfer platform 21 to move along the lateral direction of the base 100. The second transverse movement assembly includes a second linear module 221 and a second slide 222. The second linear module 221 is arranged on the base 100 and is used to drive the second slide 222 to move transversely; the second transfer platform 21 is arranged on the second slide 222.

[0086] Cooperate Figures 4 to 8As shown, the first detection mechanism 3 is used to perform appearance inspection on one side of the grasped and moved LCD screen. The first detection mechanism 3 is arranged within the transfer range of the first transfer mechanism 1 and is located below the first grasping component. In this embodiment, the first detection mechanism 3 performs appearance inspection on the back side of the LCD screen to be inspected that is grasped and translated by the first grasping component. The first detection mechanism 3 includes a first mounting frame 31, a first light source assembly 32 and a first imaging assembly 33 respectively arranged on the first mounting frame 31. The first mounting frame 31 is arranged on the base 100 and is located below the first grasping assembly. The first light source assembly 32 is used to fill light on the back side of the LCD screen to be inspected, and the first imaging assembly 33 is used to collect image information of the back side of the LCD screen to be inspected.

[0087] The first light source assembly 32 includes a first light source 321 and a second light source 322 which are arranged on the first mounting frame 31, and the first light source 321 and the second light source 322 are respectively located on both sides above the first imaging assembly 33; the first imaging assembly 33 includes a third mounting plate 331 and a first camera 332, the third mounting plate 331 is arranged on the first mounting frame 31, and the first camera 332 is arranged on the third mounting plate 331.

[0088] The first light source assembly 32 also includes two groups of second brackets 323 arranged on the first mounting frame 31. The first light source 321 and the second light source 322 both adopt coaxial light sources, which are both arranged on the second bracket 323, and the first light source 321 and the second light source 322 can rotate relative to the second bracket 323. In this embodiment, the first light source 321 and the second light source 322 are respectively rotatably connected to the second bracket 323, and the second bracket 323 is provided with an arc-shaped first adjustment groove 3231. After the first light source 321 and the second light source 322 are rotated to the desired angle, the first light source 321 and the second light source 322 are fixed to the second bracket 323 by screws penetrated through the first adjustment groove 3231.

[0089] The first imaging component 33 also includes a first guide rail 333, a fourth mounting plate 334, a first slider 335, a first connecting seat 336 and a first adjusting rod 337. The first guide rail 333 is arranged on the third mounting plate 331. The rear side of the fourth mounting plate 334 is provided with a first slider 335. The first slider 335 slides with the first guide rail 333. The first camera 332 is a line scan camera, which is arranged on the fourth mounting plate 334. The first connecting seat 336 is arranged on the fourth mounting plate 334. The first adjusting rod 337 is rotatably connected to the first connecting seat 336 and is screwed to the fourth mounting plate 334.

[0090] Cooperate Figure 4 , Figure 5 , Figures 9 to 11As shown, the second detection mechanism 4 is arranged within the transfer range of the second transfer mechanism 2, and is used to perform appearance detection on the other side of the liquid crystal screen to be carried and moved. In this embodiment, the second detection mechanism 4 is used to perform appearance detection on the front side of the liquid crystal screen to be detected on the second transfer platform 21. The second detection mechanism 4 includes a second mounting frame 41, a third mounting frame 42, a second light source assembly 43 and a second imaging assembly 44. The second mounting frame 41 is arranged on the base 100, the third mounting frame 42 is located above the second mounting frame 41, the second light source assembly 43 is arranged on the second mounting frame 41 and is located above the second transfer platform 21, the second light source assembly 43 is used to fill light on the front side of the liquid crystal screen to be detected on the second transfer platform 21, the second imaging assembly 44 is arranged on the third mounting frame 42 and is located above the second light source assembly 43, and the second imaging assembly 44 is used to collect image information of the front side of the liquid crystal screen to be detected.

[0091] The second light source assembly 43 includes a third light source 431 and a fourth light source 432 which are arranged on the second mounting frame 41, and the third light source 431 and the fourth light source 432 are respectively located on both sides below the first imaging assembly 33; the second imaging assembly 44 includes a fifth mounting plate 441 and a second camera 442, the fifth mounting plate 441 is arranged on the third mounting frame 42, and the second camera 442 is arranged on the fifth mounting plate 441.

[0092] The second light source assembly 43 further includes two sets of third brackets 433 disposed on the second mounting frame 41. The third light source 431 and the fourth light source 432 are both coaxial light sources, which are both disposed on the third bracket 433, and the third light source 431 and the fourth light source 432 can rotate relative to the third bracket 433. In this embodiment, the third light source 431 and the fourth light source 432 are respectively rotatably connected to the third bracket 433, and the third bracket 433 is provided with an arc-shaped second adjustment slot 4331. After the third light source 431 and the fourth light source 432 are rotated to a desired angle, the third light source 431 and the fourth light source 432 are fixed to the third bracket 433 by screws penetrating the second adjustment slot 4331.

[0093] The second imaging component 44 also includes a second guide rail 443, a sixth mounting plate 444, a second slider 445, a second connecting seat 446 and a second adjusting rod 447. The second guide rail 443 is arranged on the fifth mounting plate 441. The second slider 445 is provided on the rear side of the sixth mounting plate 444. The second slider 445 slides with the second guide rail 443. The second camera 442 adopts a line scan camera, which is arranged on the sixth mounting plate 444. The second connecting seat 446 is arranged on the sixth mounting plate 444. The second adjusting rod 447 is rotatably connected to the second connecting seat 446 and is screwed to the sixth mounting plate 444.

[0094] When the first transfer mechanism 1 grabs the LCD screen to be inspected and moves along the horizontal direction of the base 100 and passes through the first inspection mechanism 3, the first inspection mechanism 3 located below the first grabbing component takes an image of the back of the LCD screen to be inspected and completes the appearance inspection of the back of the LCD screen to be inspected. After the first transfer mechanism 1 places the grabbed LCD screen on the second slide 222, the second linear module 221 drives the second slide 222 to carry the LCD screen to move horizontally and pass through the second inspection mechanism 4. The second inspection mechanism 4 takes an image of the front of the LCD screen to be inspected and completes the appearance inspection of the front of the LCD screen to be inspected.

[0095] Cooperate Figure 2 , Figures 12 to 17 As shown, the third transfer mechanism 5 is connected with the second transfer mechanism 2, and the third transfer mechanism 5 is used to transfer the LCD screen on the second transfer platform 21 after the appearance inspection to the fourth transfer platform 61. The third transfer mechanism 5 includes a third longitudinal movement component, a third vertical movement component and a third grabbing component. The third longitudinal movement component is used to drive the third vertical movement component to move along the longitudinal direction of the base 100, the third vertical movement component is used to drive the third grabbing component to move along the vertical direction of the base 100, and the third grabbing component is used to grab the LCD screen on the second transfer platform 21.

[0096] The third longitudinal movement assembly includes a third bracket 511, a third linear module 512 and a third slide 513. The third bracket 511 is arranged on the machine base 100. The third linear module 512 is arranged on the third bracket 511, and is used to drive the third slide 513 to move longitudinally. The third vertical movement assembly includes a seventh mounting plate 521, a third cylinder 522 and an eighth mounting plate 523. The seventh mounting plate 521 is arranged on the third slide 513. The third cylinder 522 is arranged on the seventh mounting plate 521. The eighth mounting plate 523 is fixed on the piston rod of the third cylinder 522. The third grasping assembly includes a third suction cup 531 and a plurality of third suction rods 532 arranged on the third suction cup 531. The third suction cup 531 is arranged on the eighth mounting plate 523.

[0097] After the third suction rod 532 absorbs the LCD screen on the second transfer platform 21, the third cylinder 522 drives the eighth mounting plate 523 to carry the LCD screen up and away from the second transfer platform 21. Then the third linear module 512 drives the third slide 513 to move the LCD screen along the longitudinal direction of the machine base 100 to above the fourth transfer platform 61. The third cylinder 522 drives the eighth mounting plate 523 to descend so that the LCD screen is placed on the fourth transfer platform 61.

[0098] The fourth transfer mechanism 6 is connected to the third transfer mechanism 5, and is used to carry the LCD screen and move backward along the lateral direction of the base 100 for unloading. The fourth transfer mechanism 6 includes a fourth transfer platform 61 and a fourth transverse movement assembly. The fourth transfer platform 61 is used to place the LCD screen, and the fourth transverse movement assembly is used to drive the fourth transfer platform 61 to move along the lateral direction of the base 100. The fourth transverse movement assembly includes a fourth linear module 621 and a fourth slide 622. The fourth linear module 621 is provided on the base 100 and is used to drive the fourth slide 622 to move transversely. The fourth transfer platform 61 is provided on the fourth slide 622.

[0099] The positioning component 7 is arranged directly above the fourth transfer mechanism 6, and is used to locate the labeling position of the LCD screen placed on the fourth transfer platform 61. In this embodiment, the positioning component 7 uses a positioning camera, which is used to collect an image of the labeling position of the LCD screen on the fourth transfer platform 61. A frame 110 is provided on the base 100, and the positioning camera is installed on the frame 110.

[0100] Cooperate Fig.13 , Fig.16 and Fig.18 As shown, the labeling mechanism 8 is arranged on the side of the fourth transfer mechanism 6, which includes a mounting seat 81 and a uncoiler 82, a label stripping plate 83 and a reel 84 arranged on the mounting seat 81. The label stripping plate 83 is used to separate the label and the base paper of the label tape unwound by the uncoiler 82, and the reel 84 is used to reel the base paper. In this embodiment, the uncoiler 82 and the reel 84 can both adopt the structure of the existing labeling machine.

[0101] Cooperate Figures 13 to 17 As shown, the fifth transfer mechanism 9 is used to pick up the label on the stripping plate 83 and transfer the label to the labeling position of the LCD screen on the fourth transfer platform 61 for labeling. The fifth transfer mechanism 9 includes a fifth longitudinal movement component, a fifth vertical movement component and a fifth grabbing component. The fifth longitudinal movement component is used to drive the fifth vertical movement component to move along the longitudinal direction of the base 100, the fifth vertical movement component is used to drive the fifth grabbing component to move along the vertical direction of the base 100, and the fifth grabbing component is used to pick up the label on the stripping plate 83.

[0102] The fifth longitudinal movement assembly includes a fifth bracket 911, a fifth linear module 912 and a fifth slide 913. The fifth bracket 911 is arranged on the machine base 100. The fifth linear module 912 is arranged on the fifth bracket 911, and is used to drive the fifth slide 913 to move longitudinally. The fifth vertical movement assembly includes a ninth mounting plate 921, a fifth motor 922, a screw 923 and a screw pair 924. The ninth mounting plate 921 is arranged on the fifth slide 913. The fifth motor 922 and the screw 923 are arranged on the ninth mounting plate 921. The screw 923 is connected to the machine shaft of the fifth motor 922. The screw pair 924 cooperates with the screw 923. The fifth grabbing assembly includes a tenth mounting plate 931 and a suction nozzle 932. The tenth mounting plate 931 is fixed on the screw pair 924, and the suction nozzle 932 is arranged on the tenth mounting plate 931.

[0103] The fifth motor 922 drives the screw rod 923 and the screw rod pair 924 to work, so that the suction nozzle 932 picks up the label on the label stripping plate 83, and then according to the positioning component 7, the positioning labeling position of the LCD screen placed on the fourth transfer platform 61, the fifth linear module 912 drives the fifth slide 913 to move along the longitudinal direction of the machine base 100 with the label to above the fourth transfer platform 61, and finally the label on the suction nozzle 932 is attached to the LCD screen.

[0104] Cooperate Figure 2 , Fig.19 and Fig. 20 As shown, a feeding mechanism 2000 is provided at the end of the base 100, and the feeding mechanism 2000 includes a sixth transfer mechanism 2100 and a feeding conveyor line 2200. The sixth transfer mechanism 2100 is used to transfer the LCD screen on the fourth transfer platform 61 to the feeding conveyor line 2200. In this embodiment, the feeding conveyor line 2200 includes two groups of conveyor belts arranged side by side, one group is used to convey the LCD screen that has passed the inspection, and the other group is used to convey the LCD screen that has failed the inspection. The sixth transfer mechanism 2100 includes a sixth transverse moving assembly, a sixth longitudinal moving assembly, a sixth vertical moving assembly and a sixth grabbing assembly. The sixth transverse moving assembly is used to drive the sixth longitudinal moving assembly to move along the transverse direction of the base 100, the sixth longitudinal moving assembly is used to drive the sixth vertical moving assembly to move along the longitudinal direction of the base 100, the sixth vertical moving assembly is used to drive the sixth grabbing assembly to move along the vertical direction of the base 100, and the sixth grabbing assembly is used to grab the LCD screen on the fourth transfer platform 61.

[0105] The sixth transverse movement assembly includes a sixth bracket 2111, a sixth linear module 2112 and a sixth slide 2113, the sixth bracket 2111 is arranged on the machine base 100, the sixth linear module 2112 is arranged on the sixth bracket 2111, and is used to drive the sixth slide 2113 to move transversely, and the sixth longitudinal movement assembly includes a seventh bracket 2121, a seventh linear module 2122 and a seventh slide 2123, the seventh bracket 2121 is arranged on the sixth slide 2113, the seventh linear module 2122 is arranged on the seventh bracket 2121, and is used to drive the seventh slide 2113 to move transversely. 123 is longitudinally moved, the sixth vertical movement assembly includes an eleventh mounting plate 2131, a sixth cylinder 2132 and a twelfth mounting plate 2133, the eleventh mounting plate 2131 is arranged on the seventh slide 2123, the sixth cylinder 2132 is arranged on the eleventh mounting plate 2131, the twelfth mounting plate 2133 is fixed on the piston rod of the sixth cylinder 2132, the sixth grabbing assembly includes a sixth suction cup 2141 and a plurality of sixth suction rods 2142 arranged on the sixth suction cup 2141, and the sixth suction cup 2141 is arranged on the twelfth mounting plate 2133.

[0106] The fifth transfer mechanism 9 completes the labeling step for the LCD screens that have passed the appearance inspection. After the labeling is completed, the sixth transfer mechanism 2100 transfers the LCD screens on the fourth transfer platform 61 to the conveyor belt of qualified products on the unloading conveyor line 2200. For the LCD screens that have failed the appearance inspection, the labeling step is not performed, that is, the sixth transfer mechanism 2100 directly transfers the LCD screens on the fourth transfer platform 61 to the conveyor belt of unqualified products on the unloading conveyor line 2200 and transports them backward for further processing.

[0107] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An automatic detection device for liquid crystal screen defects, characterized in that: It includes a machine base, a first transfer mechanism, a first detection mechanism, a second transfer mechanism, a second detection mechanism, a third transfer mechanism, a labeling mechanism, a fourth transfer mechanism and a fifth transfer mechanism arranged on the machine base; The first transfer mechanism is used to grab the LCD screen to be tested and move it along the lateral direction of the base; The first detection mechanism is used to perform appearance detection on one side of the grasped and moved LCD screen; The second transfer mechanism is connected to the first transfer mechanism, and is used to carry the LCD screen to be tested and move it along the lateral direction of the base; The second detection mechanism is used to perform appearance detection on the other side of the liquid crystal screen that carries the movement; The third transfer mechanism is connected to the second transfer mechanism and is used to transfer the LCD screen to the fourth transfer mechanism; The labeling mechanism is used for unwinding the label tape and separating the label tape label from the backing paper; The fifth transfer mechanism is used to pick up the separated labels and transfer the labels to the liquid crystal screen after the appearance inspection by the first inspection mechanism and the second inspection mechanism for labeling; The fourth transfer mechanism is connected to the third transfer mechanism, and is used to carry the liquid crystal screen and move it backward along the horizontal direction of the base for unloading; The front end and the end of the machine base are respectively provided with a loading mechanism and a unloading mechanism; the loading mechanism comprises a loading conveyor line, a first positioning member and a second positioning member, the loading conveyor line is arranged on the machine base, the first positioning member and the second positioning member are respectively arranged on two adjacent sides of the loading conveyor line, and are used to position the LCD screen to be tested in the loading conveyor line, so that the first transfer mechanism can grab the LCD screen to be tested; the first positioning member is arranged on the side of the loading conveyor line and is perpendicular to the conveying direction of the loading conveyor line, the first positioning member comprises a first positioning cylinder and a first push plate, the first push plate is connected to the piston rod of the first positioning cylinder, the second positioning member is arranged at the end of the loading conveyor line in the conveying direction, and comprises a second positioning cylinder and a second push plate, the second push plate is connected to the piston rod of the second positioning cylinder; LCD screen loading, the first positioning cylinder drives the first push plate to push the LCD screen to be tested to the position in the middle of the loading conveyor line, the LCD screen to be tested is transported backward along the loading conveyor line, and the second positioning cylinder drives the second push plate to push the LCD screen to be tested forward, so that the LCD screen to be tested is located directly below the grabbing position of the first transfer mechanism.

2. The automatic detection device for liquid crystal screen defects according to claim 1, characterized in that: The first transfer mechanism includes a first transverse moving assembly, a first vertical moving assembly and a first grabbing assembly, wherein the first transverse moving assembly is used to drive the first vertical moving assembly to move in the transverse direction of the base, the first vertical moving assembly is used to drive the first grabbing assembly to move in the vertical direction of the base, and the first grabbing assembly is used to grab the LCD screen to be detected; The second transfer mechanism includes a second transfer platform and a second transverse movement assembly, the first transfer mechanism grabs the LCD screen to be inspected and translates it to the second transfer platform, and the second transverse movement assembly is used to drive the second transfer platform to move in the transverse direction of the base; The first detection mechanism is arranged within the transfer range of the first transfer mechanism and is located below the first grabbing assembly, and the first detection mechanism performs appearance detection on the back of the to-be-detected LCD screen that is grabbed and translated by the first grabbing assembly; The second detection mechanism is arranged within the transfer range of the second transfer mechanism, and is used to perform appearance detection on the front side of the to-be-detected liquid crystal screen on the second transfer platform.

3. The automatic detection device for liquid crystal screen defects according to claim 2, characterized in that: The first transverse movement assembly includes a first bracket, a first linear module and a first slide, the first bracket is arranged on the machine base, the first linear module is arranged on the first bracket, and is used to drive the first slide to move transversely, the first vertical movement assembly includes a first mounting plate, a first cylinder and a second mounting plate, the first mounting plate is arranged on the first slide, the first cylinder is arranged on the first mounting plate, the second mounting plate is fixed on the piston rod of the first cylinder, the first grasping assembly includes a first suction cup and a plurality of vacuum suction rods arranged on the first suction cup, and the first suction cup is arranged on the second mounting plate; The second transverse movement assembly includes a second linear module and a second slide. The second linear module is arranged on the machine base and is used to drive the second slide to move transversely. The second transfer platform is arranged on the second slide.

4. The automatic detection device for liquid crystal screen defects according to claim 2, characterized in that: The first detection mechanism includes a first mounting frame, a first light source assembly and a first imaging assembly respectively arranged on the first mounting frame, the first mounting frame is arranged on the machine base and is located below the first grabbing assembly, the first light source assembly is used to fill light on the back side of the LCD screen to be detected, and the first imaging assembly is used to collect image information of the back side of the LCD screen to be detected; The second detection mechanism includes a second mounting frame, a third mounting frame, a second light source assembly and a second imaging assembly. The second mounting frame is mounted on the machine base, the third mounting frame is located above the second mounting frame, the second light source assembly is mounted on the second mounting frame and is located above the second transfer platform, the second light source assembly is used to fill in the light of the front of the LCD screen to be detected on the second transfer platform, the second imaging assembly is mounted on the third mounting frame and is located above the second light source assembly, and the second imaging assembly is used to collect image information of the front of the LCD screen to be detected.

5. The automatic detection device for liquid crystal screen defects according to claim 4, characterized in that: The first light source assembly includes a first light source and a second light source disposed on the first mounting frame, and the first light source and the second light source are respectively located on both sides above the first imaging assembly; the first imaging assembly includes a third mounting plate and a first camera, the third mounting plate is disposed on the first mounting frame, and the first camera is disposed on the third mounting plate; The second light source assembly includes a third light source and a fourth light source arranged on the second mounting bracket, and the third light source and the fourth light source are respectively located on both sides below the first imaging assembly; the second imaging assembly includes a fifth mounting plate and a second camera, the fifth mounting plate is arranged on the third mounting bracket, and the second camera is arranged on the fifth mounting plate.

6. The automatic detection device for liquid crystal screen defects according to claim 4, characterized in that: Also included is a positioning component; The third transfer mechanism includes a third longitudinal movement assembly, a third vertical movement assembly and a third grabbing assembly, wherein the third longitudinal movement assembly is used to drive the third vertical movement assembly to move along the longitudinal direction of the base, the third vertical movement assembly is used to drive the third grabbing assembly to move along the vertical direction of the base, and the third grabbing assembly is used to grab the LCD screen on the second transfer platform; The fourth transfer mechanism comprises a fourth transfer platform and a fourth transverse movement assembly, wherein the fourth transfer platform is used to place the liquid crystal screen, and the fourth transverse movement assembly is used to drive the fourth transfer platform to move in the transverse direction of the base; The positioning component is arranged directly above the fourth transfer mechanism, and is used to locate the labeling position of the LCD screen placed on the fourth transfer platform; The labeling mechanism is arranged on the side of the fourth transfer mechanism, and comprises a mounting seat and an unwinder, a label stripping plate and a rewinder arranged on the mounting seat, wherein the label stripping plate is used to separate the label and the base paper of the label tape unwinded by the unwinder, and the rewinder is used to rewind the base paper; The fifth transfer mechanism is used to pick up the label on the label stripping plate and transfer the label to the labeling position of the liquid crystal screen on the fourth transfer platform for labeling.

7. The automatic detection device for liquid crystal screen defects according to claim 6, characterized in that: The third longitudinal movement assembly includes a third bracket, a third linear module and a third slide, the third bracket is arranged on the machine base, the third linear module is arranged on the third bracket, and is used to drive the third slide to move longitudinally, the third vertical movement assembly includes a seventh mounting plate, a third cylinder and an eighth mounting plate, the seventh mounting plate is arranged on the third slide, the third cylinder is arranged on the seventh mounting plate, the eighth mounting plate is fixed on the piston rod of the third cylinder, the third grasping assembly includes a third suction cup and a plurality of third suction rods arranged on the third suction cup, and the third suction cup is arranged on the eighth mounting plate; The fourth transverse movement assembly includes a fourth linear module and a fourth slide, the fourth linear module is arranged on the machine base, and is used to drive the fourth slide to move transversely, and the fourth transfer platform is arranged on the fourth slide; The positioning component adopts a positioning camera, which is used to collect an image of the labeling position of the LCD screen on the fourth transfer table; The fifth transfer mechanism includes a fifth longitudinal movement component, a fifth vertical movement component and a fifth grabbing component. The fifth longitudinal movement component is used to drive the fifth vertical movement component to move along the longitudinal direction of the base. The fifth vertical movement component is used to drive the fifth grabbing component to move along the vertical direction of the base. The fifth grabbing component is used to pick up the label on the stripping plate.

8. The automatic detection device for liquid crystal screen defects according to claim 7, characterized in that: The fifth longitudinal movement assembly includes a fifth bracket, a fifth linear module and a fifth slide. The fifth bracket is arranged on the machine base. The fifth linear module is arranged on the fifth bracket and is used to drive the fifth slide to move longitudinally. The fifth vertical movement assembly includes a ninth mounting plate, a fifth motor, a screw and a screw pair. The ninth mounting plate is arranged on the fifth slide. The fifth motor and the screw are arranged on the ninth mounting plate. The screw is connected to the machine shaft of the fifth motor. The screw pair cooperates with the screw. The fifth grabbing assembly includes a tenth mounting plate and a suction nozzle. The tenth mounting plate is fixed on the screw pair. The suction nozzle is arranged on the tenth mounting plate.

9. The automatic detection device for liquid crystal screen defects according to claim 8, characterized in that: The unloading mechanism includes a sixth transfer mechanism and an unloading conveyor line. The sixth transfer mechanism is used to transfer the LCD screen on the fourth transfer platform to the unloading conveyor line. The sixth transfer mechanism includes a sixth transverse movement component, a sixth longitudinal movement component, a sixth vertical movement component and a sixth grasping component. The sixth transverse movement component is used to drive the sixth longitudinal movement component to move along the transverse direction of the base, the sixth longitudinal movement component is used to drive the sixth vertical movement component to move along the longitudinal direction of the base, the sixth vertical movement component is used to drive the sixth grasping component to move along the vertical direction of the base, and the sixth grasping component is used to grasp the LCD screen on the fourth transfer platform.

10. The automatic detection device for liquid crystal screen defects according to claim 9, characterized in that: The sixth transverse movement assembly includes a sixth bracket, a sixth linear module and a sixth slide, the sixth bracket is arranged on the machine base, the sixth linear module is arranged on the sixth bracket, and is used to drive the sixth slide to move transversely, the sixth longitudinal movement assembly includes a seventh bracket, a seventh linear module and a seventh slide, the seventh bracket is arranged on the sixth slide, the seventh linear module is arranged on the seventh bracket, and is used to drive the seventh slide to move longitudinally, the sixth vertical movement assembly includes an eleventh mounting plate, a sixth cylinder and a twelfth mounting plate, the eleventh mounting plate is arranged on the seventh slide, the sixth cylinder is arranged on the eleventh mounting plate, and the twelfth mounting plate is fixed on the piston rod of the sixth cylinder, the sixth grasping assembly includes a sixth suction cup and a plurality of sixth suction rods arranged on the sixth suction cup, and the sixth suction cup is arranged on the twelfth mounting plate.

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