Light guide plate inspection device and inspection method

Abstract

The present application relates to light guide plate detection device and detection method, including: conveyor, the conveyor includes feed end and discharge end, magnet two, the clamping is arranged in the both sides of light guide plate, dust removal assembly, the dust removal assembly includes the dust removal frame arranged in the both sides of conveyor and the dust removal pipe fixedly arranged on the dust removal frame, the dust removal pipe has dust removal cavity, the present application can open the dust removal pipe along the direction of light guide plate conveying one by one through the driving part on the conveyor, and, with the light guide plate moving on the conveyor, the driving part separated from the light guide plate will restore to the initial position, so that the sealing sleeve seals the through hole, therefore the dust removal assembly on the conveyor can open along with the position of light guide plate conveying, carry out the dust collection of fixed point high efficiency, can reduce the waste of wind force, improve the surface finish of light guide plate, exclude the influence of light guide plate detection result due to the dust existing on the light guide plate.

Description

Technical Field

[0001] The present invention relates to the technical field of light guide plate detection, and in particular to a light guide plate detection device and a detection method. Background Art

[0002] The light guide plate is made of optical-grade acrylic / PC sheets, and then uses high-tech materials with extremely high reflectivity and non-light absorption. The light guide points are printed on the bottom of the optical-grade acrylic sheet using laser engraving, V-shaped cross grid engraving and UV screen printing technology.

[0003] During the production and transportation of light guide plates, a layer of dust will adhere to the surface of the light guide plates under the influence of the workshop environment. It is impossible to eliminate the influence of the dust on the light guide plates on the light guide plate detection results, and the detection accuracy is reduced. Therefore, a light guide plate detection device and detection method are proposed to solve this problem. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a light guide plate detection device and detection method. The specific technical solutions are as follows:

[0005] A light guide plate detection device, comprising:

[0006] A conveyor, the conveyor comprising a feed end and a discharge end;

[0007] Magnet 2, snap-fitted to both sides of the light guide plate;

[0008] A dust removal assembly, the dust removal assembly comprising dust removal frames arranged on both sides of the conveyor and a dust suction pipe fixedly arranged on the dust removal frame, the dust suction pipe having a dust removal cavity, an end of the dust suction pipe located outside the dust removal frame being provided with an opening communicating with the dust removal cavity, the dust suction pipe being provided with a through hole communicating with the dust removal cavity, a driving member being provided on the dust removal frame and below the dust suction pipe, a sealing sleeve being provided on the driving member, the sealing sleeve being slidably sleeved on the surface of the dust suction pipe, the driving member being responsive to the second magnet for pushing the sealing sleeve to move and open the through hole;

[0009] The detection component is arranged at the discharge end of the conveyor.

[0010] As an improvement of the above technical solution, the driving member includes a moving rod movably plugged into the dust removal frame, and a magnet 1 is provided at one end of the moving rod located outside the dust removal frame. The corresponding surfaces of magnet 1 and magnet 2 have the same magnetic properties, and a spring 1 is wound on the surface of the moving rod and located between magnet 1 and the dust removal frame. The end of the moving rod located inside the dust removal frame is fixedly connected to the sealing sleeve.

[0011] As an improvement of the above technical solution, the magnetic force between the first magnet and the second magnet is greater than the elastic force of the first spring.

[0012] As an improvement to the above technical solution, a baffle is detachably connected to the conveyor.

[0013] As an improvement of the above technical solution, the detection component includes a detection platform arranged at the discharge end of the conveyor, a camera is arranged directly above the detection platform through a bracket, and a light source unit is arranged on the detection platform and at one end away from the conveyor.

[0014] As an improvement of the above technical solution, the light source unit includes a fixed base arranged on the detection table, and multiple groups of partitions are arranged in the cavity of the fixed base. The multiple groups of partitions divide the cavity of the fixed base into multiple groups of placement cavities along the extension direction of the fixed base, and a light source is arranged in the placement cavity.

[0015] As an improvement of the above technical solution, a movable sleeve is movably connected to the side of the placement cavity facing the conveyor, and a accommodating cavity for the light source to emit is opened in the movable sleeve. Push switches are provided on the inner wall of the placement cavity and on both sides of the light source. The push switches are electrically connected to the light source. The movable sleeve is located in the placement cavity and has an enlarged end. A spring 2 is wound on the surface of the movable sleeve and located in the placement cavity.

[0016] In order to cooperate with any of the light guide plate detection devices in the aforementioned technical solutions, a detection method for a light guide plate detection device is provided, comprising the following steps:

[0017] S1: clamping the second magnet to both sides of the light guide plate, and then placing the light guide plate into the conveyor from the feed end;

[0018] S2: When the light guide plate is transported on the conveyor, when the driving member on the conveyor is adjacent to the second magnet, the driving member will move in the direction away from the second magnet. At this time, the driving member drives the sealing sleeve to move, opening the through hole, so that the corresponding opening of the dust collection pipe, under the action of negative pressure, sucks the dust on the surface of the light guide plate into the dust collection pipe, and then enters the dust collector through the through hole;

[0019] S3: As the light guide plate moves on the conveyor, the driving member separates from the light guide plate and returns to its initial position, so that the sealing sleeve seals the through hole;

[0020] S4: The conveyor conveys the catheter light to the detection component position for detection.

[0021] Beneficial effects of the present invention:

[0022] By utilizing the dust removal assembly to remove dust from the surface of the light guide plate during the conveying process, when the light guide plate is conveyed on the conveyor, when the driving member on the conveyor is adjacent to magnet two, the driving member will move in the direction away from magnet two. At this time, the driving member drives the sealing sleeve to move, opens the through hole, and makes the opening of the corresponding dust suction tube suck the dust on the surface of the light guide plate into the dust suction tube under the action of negative pressure. The driving members on the conveyor can be opened one by one along the direction of conveying of the light guide plate, and as the light guide plate moves on the conveyor, the driving member separated from the light guide plate will return to its initial position, so that the sealing sleeve will seal the through hole. Therefore, the dust removal assembly on the conveyor can be opened according to the conveying position of the light guide plate, and perform fixed-point and efficient dust collection, which can reduce the waste of wind power, improve the surface finish of the light guide plate, and eliminate the influence of dust on the light guide plate on the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A top view of the overall structure of the present invention;

[0024] Figure 2 This is a schematic structural diagram of the dust removal component in the present invention in a closed state;

[0025] Figure 3 This is a schematic structural diagram of the dust removal component in the present invention in an open state;

[0026] Figure 4 Schematic diagram of the structure of the detection component of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the fixing seat in the present invention;

[0028] Figure 6 It is a side view of the fixing seat in the present invention.

[0029] Figure numerals: 10, conveyor; 11, baffle; 20, dust removal frame; 21, dust suction tube; 211, through hole; 22, moving rod; 23, spring 1; 24, magnet 1; 25, sealing sleeve; 30, detection table; 31, fixing seat; 32, moving sleeve; 33, light source; 34, press switch; 35, spring 2; 36, camera; 40, light guide plate; 41, magnet 2. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to 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.

[0031] Example 1:

[0032] The light guide plate detection device includes: a conveyor 10 for conveying the light guide plate 40, the conveyor 10 includes a feeding end and a discharging end; a second magnet 41, which is engaged and arranged on both sides of the light guide plate 40; a dust removal component, the dust removal component includes a dust removal frame 20 arranged on both sides of the conveyor 10 and a dust suction pipe 21 fixedly arranged on the dust removal frame 20, the dust suction pipe 21 has a dust removal cavity, and the dust suction pipe 21 is provided with an opening connected to the dust removal cavity at one end located outside the dust removal frame 20, and a through hole 211 connected to the dust removal cavity is provided on the dust suction pipe 21, a driving member is provided on the dust removal frame 20 and below the dust suction pipe 21, a sealing sleeve 25 is provided on the driving member, the sealing sleeve 25 is slidably connected to the surface of the dust suction pipe 21, and the driving member responds to the second magnet 41 to push the sealing sleeve 25 to move and open the through hole 211; a detection component is provided at the discharging end of the conveyor 10.

[0033] A dust collector is provided above the dust removal frame 20, and the second magnet 41 with a C-shaped cross-section is clamped to both sides of the light guide plate 40, which can effectively avoid the problem of corner collision during its transportation. When the light guide plate 40 enters from the feeding end of the conveyor 10 and the light guide plate 40 is transported on the conveyor 10, when the driving member on the conveyor 10 is adjacent to the second magnet 41, the driving member will move in the direction away from the second magnet 41. At this time, the driving member drives the sealing sleeve 25 to move and open the through hole 211, so that the opening of the corresponding dust suction pipe 21, under the action of negative pressure, sucks the dust on the surface of the light guide plate 40 into the dust suction pipe 21, and then enters the dust collector through the through hole 211. Figure 3 The driving members on the conveyor 10 can be opened one by one along the conveying direction of the light guide plate 40, and as the light guide plate 40 moves on the conveyor, the driving members separated from the light guide plate 40 will return to their initial positions, so that the sealing sleeve 25 seals the through hole 211. Figure 2 Therefore, the dust removal component on the conveyor 10 can be opened according to the position of the light guide plate conveyed, and efficient dust collection can be performed at a fixed point, which can reduce the waste of wind power, improve the surface smoothness of the light guide plate 40, and eliminate the influence of dust on the light guide plate 40 on the detection results of the light guide plate 40.

[0034] In one embodiment, reference Figure 2 and Figure 3The driving member includes a moving rod 22 that is movably plugged into the dust removal frame 20. A magnet 24 is provided at one end of the moving rod 22 located outside the dust removal frame 20. The corresponding surfaces of the magnet 24 and the magnet 2 41 have the same magnetic properties. A spring 23 is wound around the surface of the moving rod 22 and located between the magnet 24 and the dust removal frame 20. The end of the moving rod 22 located inside the dust removal frame 20 is fixedly connected to the sealing sleeve 25. Specifically, since the corresponding surfaces of the magnet 24 and the magnet 2 41 have the same magnetic properties, the magnetic repulsion The action of the dust collector will push the moving rod 22 to move away from the light guide plate 40, so that the moving rod 22 drives the sealing sleeve 25 to move on the surface of the dust suction tube 21, so that the through hole 211 on the dust suction tube 21 is opened. Under the action of the dust collector, dust can enter the dust suction tube 21 on the opened through hole 211. When the magnet 2 41 is separated from the magnet 1 24, under the action of the restoring elastic force of the spring 1 23, the spring 1 23 pushes the moving rod 22 to return to its initial position, and the moving rod 22 drives the sealing sleeve 25 to cover and close the through hole 211.

[0035] In one embodiment, reference Figure 2 and Figure 3 The magnetic force between the magnet 1 24 and the magnet 2 41 is greater than the elastic force of the spring 1 23. When the magnetic repulsive force between the magnet 1 24 and the magnet 2 41 is greater than the elastic force of the spring 1 23, the moving rod 22 can be ensured to move and open the through hole 211.

[0036] In order to prevent the light guide plate 40 from being deflected by the driving member during the conveying process, Figure 2 and Figure 3 The conveyor 10 is detachably connected to a baffle 11, which can limit the conveying direction of the light guide plate 40 to avoid deviation that affects the movement of the driving member.

[0037] In one embodiment, reference Figure 4 The detection component includes an inspection platform 30 arranged at the discharge end of the conveyor 10, and a camera 36 is arranged directly above the inspection platform 30 through a bracket. A light source unit is provided on the inspection platform 30 and at one end away from the conveyor 10. Specifically, the conveyor 10 conveys the light guide plate 40 to the inspection platform 30, and the light source unit is turned on. The light source unit injects a light beam from one side of the light guide plate 40. When the light hits the various light guide points inside the light guide plate 40, the reflected light will diffuse to various angles and then be emitted from the front of the light guide plate 40, so that the surface of the light guide plate 40 is evenly illuminated. The camera 36 arranged vertically above the light guide plate 40 captures the luminous condition of the light guide plate 40, and analyzes the captured image through a computer to detect the optical performance of the light guide plate 40 and to determine whether the light guide plate 40 is qualified.

[0038] In order to avoid mutual influence of light sources, the light source unit includes a fixed base 31 arranged on the detection platform 30, and multiple groups of partitions are arranged in the cavity of the fixed base 31. The multiple groups of partitions divide the cavity of the fixed base 31 into multiple groups of placement cavities along the extension direction of the fixed base 31. Light sources 33 are arranged in the placement cavities, and the light sources 33 are separated by partitions to avoid the light emitted by two adjacent groups of light sources 33 affecting the shooting effect of the camera 36.

[0039] In order to turn on the light source 33 of the corresponding length according to the length of the light guide plate 40, so as to avoid the extra light source 33 affecting the detection effect, refer to Figure 5 and Figure 6 The placement cavity is directly opposite to the conveyor 10 and is movably connected with a movable sleeve 32. The movable sleeve 32 is provided with a receiving cavity for the light source 33 to emit. The inner wall of the placement cavity is provided with a press switch 34 on both sides of the light source 33. The press switch 34 is electrically connected to the light source 33. The movable sleeve 32 is located in the placement cavity and has an enlarged end. The surface of the movable sleeve 32 is located in the placement cavity and is wound with a spring 2 35. Specifically, the movable light guide plate 40 squeezes the movable sleeve 32, and the movable sleeve 32 drives The expanded end pushes the press switch 34, at which time the light source 33 is powered on and turned on, and a light beam is emitted from the accommodating cavity of the movable sleeve 32. Without the movable sleeve 32 squeezed by the light guide plate 40, the light source 33 will not be powered on and turned on. Therefore, the light source unit of the corresponding length can be turned on according to the width of the light guide plate 40, and when the light guide plate 40 is separated from the movable sleeve 32, the restorative elastic force of the spring 2 35 will push the movable sleeve 32 to return to its initial position. At this time, since no press switch is pressed, the light source 33 will be powered off.

[0040] Example 2

[0041] In order to cooperate with the technical solution described in the first embodiment, a detection method of a light guide plate detection device is provided, which adopts any light guide plate detection device described in the first embodiment, including the following steps:

[0042] S1: clamp the second magnet 41 to both sides of the light guide plate 40, and then let the light guide plate 40 enter the conveyor 10 from the feeding end;.

[0043] S2: When the light guide plate 40 is transported on the conveyor 10, when the driving member on the conveyor 10 is adjacent to the second magnet 41, the driving member moves away from the second magnet 41. At this time, the driving member drives the sealing sleeve 25 to move, opening the through hole 211, so that the corresponding opening of the dust suction pipe 21 is sucked into the dust suction pipe 21 under the action of negative pressure, and then enters the dust collector through the through hole 211;

[0044] S3: As the light guide plate 40 moves on the conveyor 10, the driving member separates from the light guide plate 40 and returns to its initial position, so that the sealing sleeve 25 seals the through hole 211;

[0045] S4: The conveyor 10 conveys the conduit light to the detection component position for detection.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A light guide plate detection device, characterized in that: include: A conveyor (10) for conveying the light guide plate (40), the conveyor (10) comprising a feed end and a discharge end; Magnet 2 (41) is clamped and arranged on both sides of the light guide plate (40); A dust removal assembly, the dust removal assembly comprising a dust removal frame (20) arranged on both sides of the conveyor (10) and a dust suction pipe (21) fixedly arranged on the dust removal frame (20), the dust suction pipe (21) having a dust removal cavity, an end of the dust suction pipe (21) located outside the dust removal frame (20) being provided with an opening portion communicating with the dust removal cavity, a through hole (211) communicating with the dust removal cavity being provided on the dust suction pipe (21), a driving member being provided on the dust removal frame (20) and located below the dust suction pipe (21), a sealing sleeve (25) being provided on the driving member, the sealing sleeve (25) being slidably sleeved on the surface of the dust suction pipe (21), the driving member being responsive to the second magnet (41) and being used to push the sealing sleeve (25) to move and open the through hole (211); A detection component is arranged at the discharge end of the conveyor (10); The detection assembly comprises a detection platform (30) arranged at the discharge end of the conveyor (10), a camera (36) is arranged directly above the detection platform (30) via a bracket, and a light source unit is arranged on one end of the detection platform (30) away from the conveyor (10); The light source unit comprises a fixing seat (31) arranged on the detection platform (30), a plurality of partitions are arranged in the cavity of the fixing seat (31), and the plurality of partitions divide the cavity of the fixing seat into a plurality of placement cavities along the extension direction of the fixing seat (31), and a light source (33) is arranged in each of the placement cavities; A movable sleeve (32) is movably connected to the side of the placement chamber facing the conveyor (10), and a receiving chamber for the light source (33) to emit is provided in the movable sleeve (32). A push switch (34) is provided on the inner wall of the placement chamber and on both sides of the light source (33). The push switch (34) is electrically connected to the light source (33). The movable sleeve (32) is located in the placement chamber and has an enlarged end. A spring (35) is wound on the surface of the movable sleeve (32) and located in the placement chamber.

2. The light guide plate detection device according to claim 1, wherein: The driving member includes a moving rod (22) movably plugged into the dust removal frame (20), a magnet 1 (24) is provided at one end of the moving rod (22) located outside the dust removal frame (20), the corresponding surfaces of the magnet 1 (24) and the magnet 2 (41) have the same magnetic properties, a spring 1 (23) is wound on the surface of the moving rod (22) and located between the magnet 1 (24) and the dust removal frame (20), and the end of the moving rod (22) located inside the dust removal frame (20) is fixedly connected to the sealing sleeve (25).

3. The light guide plate detection device according to claim 2, wherein: The magnetic force between the magnet 1 (24) and the magnet 2 (41) is greater than the elastic force of the spring 1 (23).

4. The light guide plate detection device according to claim 1, wherein: A baffle (11) is detachably connected to the conveyor (10).

5. A detection method for a light guide plate detection device, using the light guide plate detection device according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: clamping the second magnet (41) to both sides of the light guide plate (40), and then moving the light guide plate (40) into the conveyor (10) from the feed end; S2: When the light guide plate (40) is transported on the conveyor (10), when the driving member on the conveyor (10) is adjacent to the second magnet (41), the driving member moves in a direction away from the second magnet (41). At this time, the driving member drives the sealing sleeve (25) to move, opening the through hole (211), so that the opening of the corresponding dust suction pipe (21) sucks the dust on the surface of the light guide plate (40) into the dust suction pipe (21) under the action of negative pressure, and then enters the dust collector through the through hole (211); S3: As the light guide plate (40) moves on the conveyor (10), the driving member, after being separated from the light guide plate (40), returns to its initial position, so that the sealing sleeve (25) seals the through hole (211); S4: The conveyor (10) conveys the catheter light to the position of the detection component for detection.

Images