Inspection equipment and inspection method for diffusion plate and backlight module thereof

Abstract

The invention relates to the field of diffusion plates, in particular to inspection equipment for a diffusion plate and a backlight module thereof and an inspection method thereof.The inspection equipment comprises a first fixing mechanism used for clamping the diffusion plate; the second fixing mechanism is used for clamping the backlight module; the detection mechanism is used for detecting whether flaws appear on the surface of the diffusion plate or not; according to the inspection equipment for the diffusion plate and the backlight module and the inspection method of the inspection equipment, the diffusion plate needing to be detected upwards penetrates through the bottom of the placement plate and extrudes the tough resistance piece till the tough resistance piece moves to the topmost part of an inner cavity of the placement plate, and then the tough resistance piece moves to the topmost part of the inner cavity of the placement plate; at the moment, the threaded rod is rotated in the forward direction, so that the limiting strip connected with the inner end of the threaded rod through the bearing can play a role in preliminarily positioning the diffusion plate.

Description

Technical Field

[0001] The present invention relates to the technical field of diffusion plates, in particular to inspection equipment and an inspection method for diffusion plates and backlight modules thereof. Background Art

[0002] The biggest feature of the diffuser is that it causes great interference to light. No matter how many degrees the original design of the light distribution curve is, as long as the light passes through the diffuser, it will change the beam angle to 160-176°. So when viewed from the side, the panel of the lamp has a layer of fog. This proves that the beam angle is as large as 160-176°. The larger the beam angle, the lower the illumination. Some will also produce light filtering, so that some wavelengths cannot penetrate, causing color deviation. If the surface is subjected to light interference treatment again (for example: frosting, embossing), the transmittance will be even lower due to the natural phenomenon of geometric optics. Therefore, the base material used to make the diffuser should be selected with a refractive index as low as possible, and the interference to light will be lower.

[0003] There are several problems with existing diffuser plate and backlight module inspection equipment: 1. The light emitted by the inspection mechanism will reflect and shine on the operator's face, causing blurred vision and resulting in inspection omissions; 2. Foreign matter and defects located at different depths inside the diffuser plate cannot be illuminated and discovered by the operator due to the upper limit of light. Summary of the invention

[0004] The present invention provides an inspection device and an inspection method for a diffusion plate and a backlight module thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an inspection device for a diffuser plate and a backlight module thereof, comprising a first fixing mechanism, the first fixing mechanism being used for clamping the diffuser plate; A second fixing mechanism, which is used for clamping the backlight module; A detection mechanism, the detection mechanism is used to detect whether there are defects on the surface of the diffusion plate; An optometry mechanism, which is used to detect whether there is light leakage or defects on the surface of the backlight module; The detection mechanism and the second fixing mechanism are respectively fixedly mounted on the outside of the first fixing mechanism, and the optometry mechanism is fixedly mounted on the detection mechanism; The optometry mechanism includes a shading plate, a lens is fixedly installed inside the shading plate, holes are symmetrically opened at both ends of the shading plate, a slide bar is slidably adapted inside the hole bar, a side shading plate is fixedly connected to the top of the slide bar, and a docking rod is fixedly connected to the inner side of the side shading plate; The bottom of the slide bar is fixedly connected with a second magnet, the outer side of the slide bar is slidably adapted with a blocking frame, and the bottom of the blocking frame is provided with a through hole.

[0006] Preferably, the No. 1 fixing mechanism includes a support plate, a hydraulic rod is fixedly connected to the bottom of the inner cavity of the support plate, a top block is fixedly connected to the top of the hydraulic rod, a sliding rod is fixedly connected to the outer side of the top block, the sliding rod is inserted through the top of the support plate and extends to the outside, a No. 1 hinge joint is fixedly connected to the outer side of the sliding rod, and a placement plate is fixedly connected to the end of the No. 1 hinge joint away from the sliding rod.

[0007] Preferably, limiting components are symmetrically installed on both sides of the inner cavity of the placement plate, and a limiting block is fixedly connected to one side of the placement plate close to the No. 1 hinge joint. Threaded rods are threadedly connected to both sides of the placement plate, and the inner ends of the threaded rods are connected to the limiting strips through bearings.

[0008] Preferably, a bending rod is fixedly connected to the outer side of the top block, and the end of the bending rod away from the top block is fixedly connected to the center block, the bottom of the center block is fixedly connected to a telescopic rod, the outer side of the telescopic rod is fixedly connected to a double-headed rod, both ends of the double-headed rod are symmetrically connected to extension plates, and the extension plate is fixedly connected to the inner end of the support plate, and an electric push rod is fixedly connected to the outer side of the center block, and the end of the electric push rod away from the center block is fixedly connected to a No. 2 hinge joint, and the end of the No. 2 hinge joint away from the electric push rod is fixedly connected to a bottom block, the bottom block is fixedly connected to the bottom of the placement plate, and the bottom of the inner cavity of the placement plate is fixedly connected to a tough barrier.

[0009] Preferably, the limiting assembly includes side grooves, which are symmetrically opened on both ends of the placing plate, and the inner sliding adapter of the side grooves is equipped with a movable plate, the inner side of the movable plate is fixedly connected with a connecting rod, the outer side of the movable plate is inserted with an insertion rod, the inner end of the insertion rod is fixedly connected with the limiting plate, and the outer side of the movable plate is fixedly connected with a return spring, and the end of the return spring away from the movable plate is fixedly connected to the insertion rod.

[0010] Preferably, the detection mechanism includes a card plate, which is fixedly connected to the outer side of the support plate, and the end of the card plate away from the support plate is fixedly connected to a cross rail, the interior of the cross rail is connected to a screw rod through a bearing, one end of the screw rod passes through the surface of the cross rail and is connected to a servo motor through a coupling, and the servo motor is fixedly installed on the outer side of the cross rail, the outer side of the screw rod is threadedly connected to a slider, the top of the slider is fixedly connected to a triangular plate, the inner side of the triangular plate is fixedly installed with a detection assembly, the outer side of the triangular plate is fixedly connected to a cross plate, the top of the cross plate is fixedly connected to a No. 1 magnet, the end of the triangular plate away from the detection assembly is fixedly connected to a folding plate, and the top of the folding plate is fixedly connected to a triangular block.

[0011] Preferably, the detection component includes an inner block, which is fixedly connected to the inside of the triangle plate, a rotating sleeve is fixedly connected to the side of the inner block away from the triangle plate, an end of the rotating sleeve away from the inner block is rotatably connected to a rotating ball, a sweeping rod is sleeved on the center of the rotating ball, a detection piece is fixedly installed on the inner end of the sweeping rod, the outer side of the sweeping rod is slidably adapted to a limit rail, and the limit rail is symmetrically connected to the two ends of the triangle plate.

[0012] Preferably, the detection part includes a perforated sleeve, the outer side of the perforated sleeve is fixedly connected to the sweeping rod, the end of the perforated sleeve close to the sweeping rod is sleeved with a laser beam generator, the top of the laser beam generator is fixedly connected to a sleeve plate, the top of the sleeve plate is fixedly connected to a top inclined block, the top of the top inclined block is extruded and adapted with a bottom inclined block, the bottom inclined block is inserted into the outer side of the perforated sleeve and extends to the interior thereof, the top of the bottom inclined block is fixedly connected to an elastic strip, and the end of the elastic strip away from the bottom inclined block is fixedly connected to the outer side of the perforated sleeve.

[0013] Preferably, the inside of the perforated sleeve is fixedly connected to an inner bracket, the inner side of the inner bracket is fixedly connected to an inner sleeve, the inner sides of the inner sleeve are respectively fixedly connected to a rod No. 1 and a rod No. 2, the end of the No. 1 rod away from the inner sleeve is fixedly connected to a No. 1 reflector, the end of the No. 2 rod away from the inner sleeve is fixedly connected to a launching tube, the interior of the launching tube is slidably adapted with a telescopic tube, the inner side of the launching tube is fixedly connected to a No. 3 rod, and the end of the No. 3 rod away from the launching tube is fixedly connected to a No. 2 reflector.

[0014] The inspection method for a diffusion plate and a backlight module thereof comprises the following steps: Step 1: Preliminary positioning: pass the diffuser plate to be tested upward from the bottom of the placement plate and squeeze the tough barrier until it moves to the top of the inner cavity of the placement plate. At this time, rotate the threaded rod forward so that the limit bar connected to the inner end through the bearing will play a preliminary positioning role for the diffuser plate. Step 2: Deflection processing, by starting the electric push rod, the second hinge joint connected to the telescopic end will move the bottom block to the right, and the top of the bottom block is connected to the bottom of the placement plate, so the placement plate will deflect with the first hinge joint as the fulcrum, and the position of the diffusion plate will deflect upward; Step 3: Strengthen the detection. Manually pull the laser beam generator out a little. At this time, the sleeve plate fixed on the top will move upward with the top oblique block and squeeze the bottom oblique block. Then the bottom oblique block will stretch the elastic strip and slowly pull out from the outside of the open hole sleeve. Then the light beam that was originally partially blocked by the bottom of the bottom oblique block will be revealed, thereby strengthening the irradiation beam.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Pass the diffuser plate to be tested upward from the bottom of the placement plate and squeeze the tough barrier until it moves to the top of the inner cavity of the placement plate. At this time, rotate the threaded rod forward so that the limit bar connected to the inner end through the bearing will play a preliminary role in positioning the diffuser plate.

[0016] 2. By loosening the insertion rod and under the compression force of the return spring, the limit plate fixedly connected to the inner end of the insertion rod will squeeze the outer side of the diffuser plate, thereby playing the role of all-round fixing of the diffuser plate. In addition, by moving the threaded rod and the insertion rod, the diffuser plate of any thickness can be limited and fixed.

[0017] 3. When the diffuser is tilted upward, the operator's eyes will not be directly facing the light emitted by the detection mechanism, and the operator can inspect it through the light source emitted obliquely upward, which can effectively avoid the diffuser being blurred due to the inspector's eyes facing the light source for a long time, resulting in inspection omissions, thereby improving the inspector's detection rate of defects on the diffuser.

[0018] 4. Slowly pull the bottom oblique block out from the outside of the hole sleeve, and then the light beam that was originally partially blocked by the bottom of the bottom oblique block will be revealed, thereby strengthening the irradiation light beam and facilitating strong irradiation detection of a dark spot on the diffuser plate.

[0019] 5. By fixing the side shields connected to the top of the slider, both ends of the shading plate will be closed, and finally the backlight module installed on the second fixing mechanism will be turned on. Then the light emitted by the backlight module will appear in the shading plate and the side shields, thereby utilizing the surrounding dark scenes to detect whether there is light leakage or defects on the surface of the backlight module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a schematic diagram of the external structure of the inspection device for the diffusion plate and the backlight module thereof according to the present invention.

[0021] Figure 2 It is a structural schematic diagram of the first fixing mechanism of the present invention.

[0022] Figure 3 It is a schematic cross-sectional structural diagram of the first fixing mechanism of the present invention.

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0024] Figure 5 For the present invention Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0025] Figure 6 It is a structural schematic diagram of the limiting component of the present invention.

[0026] Figure 7 It is a structural schematic diagram of the detection mechanism of the present invention.

[0027] Figure 8 It is a side structural schematic diagram of the detection mechanism of the present invention.

[0028] Fig. 9 It is a schematic cross-sectional structural diagram of the detection component of the present invention.

[0029] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure at point C in the middle.

[0030] Fig.11 It is a schematic diagram of the cross-sectional structure of the detection component of the present invention.

[0031] Fig.12 For the present invention Fig.11 Schematic diagram of the enlarged structure at D in the middle.

[0032] Fig.13 It is a structural schematic diagram of the optometry mechanism of the present invention.

[0033] Fig.14 It is a schematic cross-sectional view of some components of the optometry mechanism of the present invention.

[0034] In the figure: 1, No. 1 fixing mechanism; 2, No. 2 fixing mechanism; 3, detection mechanism; 4, optometry mechanism; 11, support plate; 12, hydraulic rod; 13, top block; 14, sliding rod; 15, No. 1 hinge joint; 16, placement plate; 17, limit block; 18, limit assembly; 19, extension plate; 10, double-headed rod; 101, telescopic rod; 102, center block; 103, bending rod; 104, Electric push rod; 105, hinge joint No. 2; 106, bottom block; 107, toughness barrier; 108, threaded rod; 109, limit strip; 181, side groove; 182, moving plate; 183, connecting rod; 184, interlaced rod; 185, limit plate; 186, return spring; 31, card plate; 32, cross rail; 33, screw rod; 34, servo motor; 35, slider; 36, triangle plate; 37, inspection 38, folding plate; 39, triangular block; 30, horizontal plate; 301, magnet No. 1; 371, inner sticking block; 372, rotating sleeve; 373, rotating ball; 374, sweeping rod; 375, limit rail; 376, detection part; 3761, opening sleeve; 3762, laser beam device; 3763, sleeve plate; 3764, top oblique block; 3765, bottom oblique block; 3766, elastic strip; 37 67. Inner bracket; 3768. Inner sleeve; 3769. Rod No. 1; 3760. Reflector No. 1; 601. Rod No. 2; 602. Launch tube; 603. Telescopic tube; 604. Rod No. 3; 605. Reflector No. 2; 41. Sunshade; 42. Lens; 43. Hole groove; 44. Slide bar; 45. Side shield; 46. Docking rod; 47. Magnet No. 2; 48. Blocking frame; 49. Perforation. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 14 The present invention provides a technical solution: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, it includes a fixing mechanism 1, which is used for clamping the diffusion plate; A second fixing mechanism 2, which is used for clamping the backlight module; A detection mechanism 3, which is used to detect whether there are defects on the surface of the diffusion plate; The optometry mechanism 4 is used to detect whether there is light leakage or defect on the surface of the backlight module; The detection mechanism 3 and the second fixing mechanism 2 are respectively fixedly mounted on the outer sides of the first fixing mechanism 1 , and the optometry mechanism 4 is fixedly mounted on the detection mechanism 3 .

[0037] The No. 1 fixing mechanism 1 includes a support plate 11, a hydraulic rod 12 is fixedly connected to the bottom of the inner cavity of the support plate 11, a top block 13 is fixedly connected to the top of the hydraulic rod 12, a sliding rod 14 is fixedly connected to the outside of the top block 13, the sliding rod 14 is inserted into the top of the support plate 11 and extends to the outside, a No. 1 hinge head 15 is fixedly connected to the outside of the sliding rod 14, a placement plate 16 is fixedly connected to the end of the No. 1 hinge head 15 away from the sliding rod 14, and a limiting assembly 18 is symmetrically installed on both sides of the inner cavity of the placement plate 16, and a limiting block 17 is fixedly connected to the side of the placement plate 16 close to the No. 1 hinge head 15, and a threaded rod 108 is threadedly connected to both sides of the placement plate 16, and the inner end of the threaded rod 108 is connected to the limiting strip 109 through a bearing, and the top block The outer side of 13 is fixedly connected with a bending rod 103, and the end of the bending rod 103 away from the top block 13 is fixedly connected with the center block 102, and the bottom of the center block 102 is fixedly connected with a telescopic rod 101, and the outer side of the telescopic rod 101 is fixedly connected with a double-headed rod 10, and both ends of the double-headed rod 10 are symmetrically connected with extension plates 19, and the extension plate 19 is fixedly connected to the inner end of the support plate 11, and the outer side of the center block 102 is fixedly connected with an electric push rod 104, and the end of the electric push rod 104 away from the center block 102 is fixedly connected with a second hinge joint 105, and the end of the second hinge joint 105 away from the electric push rod 104 is fixedly connected with a bottom block 106. In addition, when the electric push rod 104 is started, the second hinge joint 105 connected to the telescopic end thereof will The bottom block 106 moves to the right, and the top of the bottom block 106 is connected to the bottom of the placement plate 16. Therefore, the placement plate 16 will deflect with the No. 1 hinge joint 15 as the fulcrum, so that when the position of the diffuser plate is tilted upward, the operator's eyes will not directly face the light emitted by the detection mechanism 3, and can be inspected by the light source emitted obliquely upward, which can effectively avoid the diffuser plate due to the inspector's eyes facing the light source for a long time, resulting in blurred vision and resulting in inspection loss, thereby improving the inspector's detection rate of defects on the diffuser plate. The bottom block 106 is fixedly connected to the bottom of the placement plate 16, and the bottom of the inner cavity of the placement plate 16 is fixedly connected with a tough barrier 107. The hydraulic rod 12 is moved, so that the top block 13 connected to the top thereof will move upward with the sliding rod 14 and pass through the top of the support plate 11, and then the placement plate 16 connected to the outer side of the support plate 11 through the No. 1 hinge joint 15 will move upward, wherein the interior of the No. 1 hinge joint 15 is not smooth, but has a certain friction resistance, so the placement plate 16 will not cause the No. 1 hinge joint 15 to deflect due to its own gravity, and when the diffusion plate is placed subsequently, the No. 1 hinge joint 15 will not deflect, and then the diffusion plate to be tested will pass upward from the bottom of the placement plate 16, and squeeze the toughness barrier 107 until it moves to the top of the inner cavity of the placement plate 16, and then the threaded rod 108 is rotated forward,The limiting strip 109 connected to the inner end through the bearing will play a role in preliminary positioning of the diffuser plate.

[0038] The limiting assembly 18 includes a side groove 181, which is symmetrically arranged at both ends of the placement plate 16. The inner sliding adaptor of the side groove 181 is equipped with a moving plate 182. The inner side of the moving plate 182 is fixedly connected with a connecting rod 183. The outer side of the moving plate 182 is inserted with an insertion rod 184. The inner end of the insertion rod 184 is fixedly connected to the limiting plate 185. The outer side of the moving plate 182 is fixedly connected with a return spring 186. The end of the return spring 186 away from the moving plate 182 is fixedly connected to the insertion rod 184, and then the moving plate is moved downward along the side groove 181. 182, and during the movement, the insertion rod 184 is pulled outward until the movable plate 182 moves to a position where its bottom end is flush with the bottom end of the diffuser plate, and then the insertion rod 184 is released. Under the compression force of the return spring 186, the limit plate 185 fixedly connected to the inner end of the insertion rod 184 will squeeze the outer side of the diffuser plate, thereby playing the role of all-round fixing of the diffuser plate. In addition, through the movement of the threaded rod 108 and the insertion rod 184, the diffuser plate of any thickness can be limited and fixed.

[0039] like Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, the detection mechanism 3 includes a card plate 31, which is fixedly connected to the outer side of the support plate 11, and the end of the card plate 31 away from the support plate 11 is fixedly connected to a cross rail 32, the interior of the cross rail 32 is connected to a screw rod 33 through a bearing, one end of the screw rod 33 passes through the surface of the cross rail 32, and is connected to a servo motor 34 through a coupling, and the servo motor 34 is fixedly installed on the outer side of the cross rail 32, and the outer side of the screw rod 33 is threadedly connected to a slider 35, the top of the slider 35 is fixedly connected to a triangular plate 36, the inner side of the triangular plate 36 is fixedly installed with a detection component 37, the outer side of the triangular plate 36 is fixedly connected to a cross plate 30, the top of the cross plate 30 is fixedly connected to a No. 1 magnet 301, the end of the triangular plate 36 away from the detection component 37 is fixedly connected to a folding plate 38, and the top of the folding plate 38 is fixedly connected to a triangular block 39.

[0040] The detection assembly 37 includes an inner sticking block 371, which is fixedly connected to the inside of the triangle plate 36. A rotating sleeve 372 is fixedly connected to the side of the inner sticking block 371 away from the triangle plate 36. The end of the rotating sleeve 372 away from the inner sticking block 371 is rotatably connected to a rotating ball 373. A sweeping rod 374 is sleeved on the center of the rotating ball 373. A detection member 376 is fixedly installed on the inner end of the sweeping rod 374. The outer side of the sweeping rod 374 is slidably adapted to a limit rail 375. The limit rail 375 is symmetrically connected to the two ends of the triangle plate 36. By starting the servo motor 34, the output end thereof is connected to the servo motor 34. The screw rod 33 connected to the shaft will rotate, and the slider 35 threadedly connected to the outside of the screw rod 33 will move laterally with the triangle plate 36. In addition, the operator can manually or use an external driving device to push the sweeping rod 374 left and right along the limit rail 375, wherein the sweeping rod 374 is rotated laterally in the rotating sleeve 372 by rotating the ball 373. Therefore, the detection part 376 connected to the inner end of the sweeping rod 374 will deflect left and right, thereby moving the irradiated light beam, which is convenient for the operator to perform high-precision detection and processing on a certain part of the diffuser.

[0041] The detection member 376 includes a perforated sleeve 3761, the outer side of the perforated sleeve 3761 is fixedly connected to the sweeping rod 374, the end of the perforated sleeve 3761 close to the sweeping rod 374 is sleeved with a laser beam generator 3762, the top of the laser beam generator 3762 is fixedly connected to a sleeve plate 3763, the top of the sleeve plate 3763 is fixedly connected to a top inclined block 3764, the top of the top inclined block 3764 is squeezed and adapted with a bottom inclined block 3765, the bottom inclined block 3765 is inserted into the outer side of the perforated sleeve 3761 and extends to the inside thereof, the top of the bottom inclined block 3765 is fixedly connected to an elastic strip 3766, the elastic strip 3766 is fixedly connected to the top of the bottom inclined block 3765, and the elastic strip 3766 is fixedly connected to the top of the bottom inclined block 3765. One end of the strip 3766 away from the bottom oblique block 3765 is fixedly connected to the outside of the perforated sleeve 3761, the inside of the perforated sleeve 3761 is fixedly connected to the inner bracket 3767, the inner side of the inner bracket 3767 is fixedly connected to the inner sleeve 3768, the inner side of the inner sleeve 3768 is respectively fixedly connected to the first rod 3769 and the second rod 601, the end of the first rod 3769 away from the inner sleeve 3768 is fixedly connected to the first reflector 3760, the end of the second rod 601 away from the inner sleeve 3768 is fixedly connected to the launch tube 602, and the interior of the launch tube 602 is slidably adapted to have a telescopic tube 6 03. A third rod 604 is fixedly connected to the inner side of the launch tube 602. A second reflector 605 is fixedly connected to the end of the third rod 604 away from the launch tube 602. Then, the laser beam generator 3762 is started, so that the light emitted by it will be irradiated on the first reflector 3760, and the first reflector 3760 will reflect the light and reflect it to the second reflector 605. Finally, the light reflected from the second reflector 605 will enter the launch tube 602 uniformly for normalization, and finally irradiate the diffuser. In addition, the laser beam generator 3762 can be manually turned on. Pull it out a little, and then the sleeve plate 3763 fixedly connected to the top will move upward with the top inclined block 3764 and squeeze the bottom inclined block 3765, wherein the contact surfaces between the top inclined block 3764 and the bottom inclined block 3765 are both inclined surfaces, and then the bottom inclined block 3765 will stretch the elastic strip 3766 and slowly pull it out from the outside of the open hole sleeve 3761, and then the light beam that was originally partially blocked by the bottom of the bottom inclined block 3765 will be revealed, thereby strengthening the irradiation light beam and facilitating strong irradiation detection of a dark spot on the diffuser plate.

[0042] like Fig.13 and Fig.14As shown, the optometry mechanism 4 includes a sunshade 41, a lens 42 is fixedly installed inside the sunshade 41, holes 43 are symmetrically provided at both ends of the sunshade 41, a slide bar 44 is slidably adapted inside the hole 43, a side shield 45 is fixedly connected to the top of the slide bar 44, a docking rod 46 is fixedly connected to the inner side of the side shield 45, a second magnet 47 is fixedly connected to the bottom of the slide bar 44, a blocking frame 48 is slidably adapted on the outer side of the slide bar 44, and a through hole 49 is provided at the bottom of the blocking frame 48. When the diffuser plate is detected, the servo motor 34 is started, and the screw rod 33 will rotate forward, causing the triangular plate 36 to move toward the direction of the optometry mechanism 4, and then the triangular block 39 connected to the triangular plate 36 through the folding plate 38 will move toward the direction of the optometry mechanism 4 and squeeze the blocking frame 48. The squeezed blocking frame 48 will move inward along the surface of the slide bar 44 until the through hole 49 opened at the bottom of the blocking frame 48 is on the same vertical line as the second magnet 47. At the same time, the horizontal plate 30 fixedly connected to the outer side of the triangular plate 36 will move with the first magnet 301 to the bottom of the second magnet 47. Then, under the action of the attraction between the two, the slide bar 44 will move downward along the hole groove 43. In addition, the side shield plate 45 fixedly connected to the top of the slide bar 44 will seal the two ends of the shading plate 41. Finally, the backlight module installed on the second fixing mechanism 2 will be opened, and then the light emitted by the backlight module will appear in the shading plate 41 and the side shield plate 45, thereby utilizing the surrounding dark scene to detect whether there is light leakage or defects on the surface of the backlight module.

[0043] When the present invention is in use: first, start the hydraulic rod 12, so that the top block 13 connected to the top thereof will move upward with the sliding rod 14 and pass through the top of the support plate 11, and then the placement plate 16 connected to the outer side of the support plate 11 through the No. 1 hinge joint 15 will move upward, and then the diffusion plate to be detected will pass upward from the bottom of the placement plate 16, and squeeze the tough barrier 107 until it moves to the top of the inner cavity of the placement plate 16, at this time, the threaded rod 108 is rotated forward, so that the limit bar 109 connected to the inner end through the bearing will initially position the diffusion plate, and then the moving plate 182 is moved downward along the side groove 181, and the insertion rod 184 is pulled outward during the movement until the moving plate 182 moves to a position where its bottom end is flush with the bottom end of the diffusion plate, and then the insertion rod 184 is released, and under the compression force of the return spring 186, the limit plate 185 fixedly connected to the inner end of the insertion rod 184 will squeeze the outer side of the diffusion plate. In addition, the electric push rod 104 is started, so that the second hinge joint 105 connected to the telescopic end thereof will move the bottom block 106 to the right, and the top of the bottom block 106 is connected to the bottom of the placement plate 16, so the placement plate 16 will deflect with the first hinge joint 15 as the fulcrum.

[0044] By starting the servo motor 34, the screw rod 33 connected to its output end through the coupling will rotate, and the slider 35 threadedly connected to the outer side of the screw rod 33 will move horizontally with the triangular plate 36. In addition, the operator manually or using an external driving device to push the sweeping rod 374 left and right along the limit rail 375, wherein the sweeping rod 374 is rotated horizontally in the rotating sleeve 372 by the rotating ball 373, so the detection member 376 connected to the inner end of the sweeping rod 374 will deflect left and right. Then start the laser beam generator 3762, so that the light emitted by it will be irradiated on the first reflector 3760, and the first reflector 3760 will reflect the light and reflect it to the second reflector 605, and finally the light reflected from the second reflector 605 will enter the transmitting tube 602 for normalization, and finally irradiate the diffusion plate.

[0045] When the diffuser plate is detected, the servo motor 34 is started, and the screw rod 33 will rotate forward, causing the triangular plate 36 to move toward the direction of the optometry mechanism 4, and then the triangular block 39 connected to the triangular plate 36 by the folding plate 38 will move toward the direction of the optometry mechanism 4 and squeeze the blocking frame 48. The squeezed blocking frame 48 will move inward along the surface of the slide 44 until the through hole 49 opened at the bottom of the blocking frame 48 is on the same vertical line as the second magnet 47. At the same time, the horizontal plate 30 fixedly connected to the outer side of the triangular plate 36 will move with the first magnet 301 to the bottom of the second magnet 47, and then under the action of the attraction between the two, the slide 44 will move downward along the hole groove 43, and the side shield plate 45 fixedly connected to the top of the slide 44 will seal the two ends of the shading plate 41.

[0046] The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work all fall within the scope of protection of the present invention.

Claims

1. Inspection equipment for diffusion plate and backlight module, characterized in that: include: A first fixing mechanism (1), the first fixing mechanism (1) being used for clamping the diffusion plate; A second fixing mechanism (2), the second fixing mechanism (2) being used for clamping the backlight module; A detection mechanism (3), the detection mechanism (3) is used to detect whether there are defects on the surface of the diffusion plate; An optometry mechanism (4), the optometry mechanism (4) being used to detect whether there is light leakage or defects on the surface of the backlight module; The detection mechanism (3) and the second fixing mechanism (2) are respectively fixedly mounted on the outside of the first fixing mechanism (1), and the optometry mechanism (4) is fixedly mounted on the detection mechanism (3); The optometry mechanism (4) comprises a shading plate (41), a lens (42) is fixedly mounted inside the shading plate (41), holes (43) are symmetrically provided at both ends of the shading plate (41), a slide bar (44) is slidably adapted inside the hole bar (43), a side shading plate (45) is fixedly connected to the top of the slide bar (44), and a docking rod (46) is fixedly connected to the inner side of the side shading plate (45); A second magnet (47) is fixedly connected to the bottom of the slide bar (44), a blocking frame (48) is slidably adapted to be provided on the outer side of the slide bar (44), and a through hole (49) is provided at the bottom of the blocking frame (48).

2. The inspection device for a diffuser plate and a backlight module thereof according to claim 1, characterized in that: The No. 1 fixing mechanism (1) comprises a support plate (11), the bottom of the inner cavity of the support plate (11) is fixedly connected to a hydraulic rod (12), the top of the hydraulic rod (12) is fixedly connected to a top block (13), the outer side of the top block (13) is fixedly connected to a sliding rod (14), the sliding rod (14) is inserted through the top of the support plate (11) and extends to the outside, the outer side of the sliding rod (14) is fixedly connected to a No. 1 hinge joint (15), and the end of the No. 1 hinge joint (15) away from the sliding rod (14) is fixedly connected to a placement plate (16).

3. The inspection device for a diffuser plate and a backlight module thereof according to claim 2, characterized in that: Limiting assemblies (18) are symmetrically installed on both sides of the inner cavity of the placement plate (16); a side of the placement plate (16) close to the first hinge joint (15) is fixedly connected to a limiting block (17); threaded rods (108) are threadedly connected to both sides of the placement plate (16); and the inner ends of the threaded rods (108) are connected to limiting strips (109) via bearings.

4. The inspection device for a diffuser plate and a backlight module thereof according to claim 3, characterized in that: The outer side of the top block (13) is fixedly connected to a bending rod (103); one end of the bending rod (103) away from the top block (13) is fixedly connected to a center block (102); the bottom of the center block (102) is fixedly connected to a telescopic rod (101); the outer side of the telescopic rod (101) is fixedly connected to a double-headed rod (10); both ends of the double-headed rod (10) are symmetrically connected to extension plates (19); the extension plates (19) are fixedly connected to the inner side of the support plate (11). The outer side of the central block (102) is fixedly connected to an electric push rod (104), one end of the electric push rod (104) away from the central block (102) is fixedly connected to a second hinge joint (105), one end of the second hinge joint (105) away from the electric push rod (104) is fixedly connected to a bottom block (106), the bottom block (106) is fixedly connected to the bottom of the placement plate (16), and the bottom of the inner cavity of the placement plate (16) is fixedly connected to a toughness barrier (107).

5. The inspection device for a diffuser plate and a backlight module thereof according to claim 4, characterized in that: The limiting assembly (18) comprises a side groove (181), wherein the side groove (181) is symmetrically arranged at both ends of the placement plate (16), and a movable plate (182) is slidably adapted inside the side groove (181), a connecting rod (183) is fixedly connected to the inner side of the movable plate (182), an insertion rod (184) is inserted into the outer side of the movable plate (182), the inner end of the insertion rod (184) is fixedly connected to the limiting plate (185), and a return spring (186) is fixedly connected to the outer side of the movable plate (182), and one end of the return spring (186) away from the movable plate (182) is fixedly connected to the insertion rod (184).

6. The inspection device for a diffuser plate and a backlight module thereof according to claim 5, characterized in that: The detection mechanism (3) comprises a card plate (31), wherein the card plate (31) is fixedly connected to the outside of the support plate (11), and one end of the card plate (31) away from the support plate (11) is fixedly connected to a cross rail (32), and the inside of the cross rail (32) is connected to a screw rod (33) via a bearing, and one end of the screw rod (33) passes through the surface of the cross rail (32) and is connected to a servo motor (34) via a coupling, and the servo motor (34) is fixedly installed on the outside of the cross rail (32), and the screw rod (33) is connected to the cross rail (32). ) is threadedly connected to a slider (35), the top of the slider (35) is fixedly connected to a triangular plate (36), the inner side of the triangular plate (36) is fixedly mounted with a detection assembly (37), the outer side of the triangular plate (36) is fixedly connected to a transverse plate (30), the top of the transverse plate (30) is fixedly connected to a No. 1 magnet (301), the end of the triangular plate (36) away from the detection assembly (37) is fixedly connected to a folding plate (38), and the top of the folding plate (38) is fixedly connected to a triangular block (39).

7. The inspection device for a diffuser plate and a backlight module thereof according to claim 6, characterized in that: The detection assembly (37) comprises an inner sticking block (371), wherein the inner sticking block (371) is fixedly connected to the inside of the triangular plate (36), a rotating sleeve (372) is fixedly connected to a side of the inner sticking block (371) away from the triangular plate (36), an end of the rotating sleeve (372) away from the inner sticking block (371) is rotatably connected to a rotating ball (373), a sweeping rod (374) is sleeved on the central part of the rotating ball (373), a detection member (376) is fixedly mounted on the inner end of the sweeping rod (374), and a limit rail (375) is slidably adapted on the outer side of the sweeping rod (374), and the limit rail (375) is symmetrically connected to the two ends of the triangular plate (36).

8. The inspection device for a diffusion plate and a backlight module thereof according to claim 7, characterized in that: The detection member (376) comprises an open hole sleeve (3761), the outer side of the open hole sleeve (3761) is fixedly connected to the sweeping rod (374), one end of the open hole sleeve (3761) close to the sweeping rod (374) is sleeved with a laser beam generator (3762), the top of the laser beam generator (3762) is fixedly connected to a sleeve plate (3763), the top of the sleeve plate (3763) is fixedly connected to a top inclined block (3764), the top of the top inclined block (3764) is extruded and adapted with a bottom inclined block (3765), the bottom inclined block (3765) is inserted into the outer side of the open hole sleeve (3761) and extends into the interior thereof, the top of the bottom inclined block (3765) is fixedly connected to an elastic strip (3766), and one end of the elastic strip (3766) away from the bottom inclined block (3765) is fixedly connected to the outer side of the open hole sleeve (3761).

9. The inspection device for a diffuser plate and a backlight module thereof according to claim 8, characterized in that: The opening sleeve (3761) is fixedly connected to an inner bracket (3767), the inner side of the inner bracket (3767) is fixedly connected to an inner sleeve (3768), the inner side of the inner sleeve (3768) is respectively fixedly connected to a No. 1 rod (3769) and a No. 2 rod (601), one end of the No. 1 rod (3769) away from the inner sleeve (3768) is fixedly connected to a No. 1 reflector (3760), one end of the No. 2 rod (601) away from the inner sleeve (3768) is fixedly connected to a launch tube (602), the interior of the launch tube (602) is slidably adapted to be equipped with a telescopic tube (603), the inner side of the launch tube (602) is fixedly connected to a No. 3 rod (604), and one end of the No. 3 rod (604) away from the launch tube (602) is fixedly connected to a No. 2 reflector (605).

10. A method for inspecting a diffuser plate and a backlight module thereof, used in the inspection device for the diffuser plate and a backlight module thereof according to claim 9, characterized in that: The following steps are involved: Step 1: Preliminary positioning, by passing the diffuser plate to be tested upward from the bottom of the placement plate (16) and squeezing the tough barrier (107) until it moves to the top of the inner cavity of the placement plate (16), and then rotating the threaded rod (108) in the forward direction, so that the limit strip (109) connected to the inner end through the bearing will play a preliminary positioning processing on the diffuser plate; Step 2: Deflection processing, by starting the electric push rod (104), the second hinge joint (105) connected to the telescopic end thereof will move the bottom block (106) to the right, and the top of the bottom block (106) is connected to the bottom of the placement plate (16), so the placement plate (16) will deflect with the first hinge joint (15) as the fulcrum, and the position of the diffusion plate will deflect upward; Step 3: To strengthen the detection, manually pull the laser beam generator (3762) outward a little. At this time, the sleeve plate (3763) fixedly connected to the top will move upward with the top oblique block (3764) and squeeze the bottom oblique block (3765). Then, the bottom oblique block (3765) will stretch the elastic strip (3766) and slowly pull it out from the outside of the opening sleeve (3761). Then, the light beam that was originally partially blocked by the bottom of the bottom oblique block (3765) will be revealed, thereby achieving the strengthening of the irradiation light beam.

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