Appearance detection equipment for automatic laser engraving of light guide plate

Abstract

The invention relates to the technical field of light guide plate detection, and discloses appearance detection equipment for automatic laser engraving of a light guide plate, the appearance detection equipment comprises a detection box, a cleaning chamber and a detection chamber are arranged on the detection box, a conveying belt is arranged on the detection box, and negative pressure adsorption covers are arranged on the two sides of the cleaning chamber. A rotatable brush plate and a wiping plate are arranged on the negative pressure adsorption cover, and a rotatable cleaning wet roller is arranged above the conveying belt; an adjustable detection camera and a contact head are arranged in the detection chamber; the cleaning wet roller rotates to promote the brush plate to automatically reciprocate through linkage, impurities in a groove of the light guide plate can be cleaned, the impurities can be timely sucked and cleaned through the negative pressure adsorption cover, dust splashing can be reduced, the dust cleaning effect is improved, meanwhile, the cleaning wet roller can evenly smear a cleaning solvent on the surface of the light guide plate to treat stubborn stains, and the cleaning effect is good. The appearance detection quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of light guide plate detection, in particular to appearance detection equipment for automatic laser engraving of light guide plates. Background Art

[0002] The automatic laser engraving technology for light guide plates achieves directional guidance and uniform diffusion of light through precise laser etching of the dot structure. Its core functions and advantages are as follows: the laser engraves micron-level dots on the back of the light guide plate, destroying the material's total reflection properties, so that light entering from the side is scattered through the dots to form a uniform surface light source. By adjusting the engraving depth and distribution density, the brightness requirements of different areas can be accurately matched. Laser etching replaces the traditional silk-screen ink layer, increasing the light transmittance by 15%-30%.

[0003] After the light guide plate is automatically laser engraved, it needs to undergo appearance inspection. The key indicators are light transmittance and brightness uniformity. The product is judged to be qualified by identifying defects such as scratches, stains or internal mist. At present, when the engraved light guide plate is transported on the conveyor belt, a manual handheld air gun is used to blow away impurities. For stubborn stains, use a cleaning cloth dipped in solvent to wipe them. ‌Problems‌:‌ Uneven blowing force of the air gun‌ can easily cause impurities to splash around, pollute the environment or adhere to other light guide plates;‌ Uneven wiping force of the cleaning cloth‌ may cause the engraved part of the light guide plate to deform, affecting light scattering and appearance inspection quality.‌‌ Summary of the Invention

[0004] The present invention provides an appearance inspection device for automatic laser engraving of light guide plates. The device has a cleaning wet roller that rotates through a linkage to cause a brush plate to automatically reciprocate, thereby cleaning impurities in the groove of the light guide plate. The impurities can be promptly sucked out by a negative pressure adsorption hood, thereby reducing dust splashing and improving the dust cleaning effect. At the same time, the cleaning wet roller can evenly apply a cleaning solvent to the surface of the light guide plate to treat stubborn stains, thereby improving the quality of appearance inspection. It solves the problem mentioned in the above background technology that uneven blowing force of the air gun can easily cause impurities to splash around, pollute the environment or adhere to other light guide plates; and uneven wiping force of the cleaning cloth may cause deformation of the engraved part of the light guide plate, thereby affecting light scattering and appearance inspection quality.

[0005] The present invention provides the following technical solution: an appearance inspection device for automatic laser engraving of a light guide plate, comprising an inspection box, wherein a cleaning chamber and an inspection chamber are respectively provided on the inspection box, and a conveyor belt is provided on the inspection box; negative pressure adsorption hoods are provided on both sides of the cleaning chamber, and a rotatable brush plate and a wiping plate are provided on the negative pressure adsorption hoods; a rotatable cleaning wet roller is provided above the conveyor belt; An adjustable detection camera and a contact head are provided in the detection chamber, and movable lighting strips and a cleaning seat are provided on both sides of the detection box, wherein a wiping strip is provided in the cleaning seat.

[0006] As an optional scheme of the appearance detection equipment for automatic laser engraving of the light guide plate, the detection box is fixed with a rotating shaft, the cleaning wet roller is fixed on the rotating shaft, one end of the rotating shaft is fixed with a mounting ring, and the mounting ring is fixed with an arc-shaped abutting block.

[0007] As an optional scheme of the appearance detection equipment for automatic laser engraving of the light guide plate, one end of the brush plate is fixed with a first rotating column, the first rotating column is rotatably connected to the negative pressure adsorption cover, the first rotating column is fixed with a first gear, one end of the wiping plate is fixed with a second rotating column, the second rotating column is rotatably connected to the negative pressure adsorption cover, and the second rotating column is fixed with a second gear.

[0008] As an optional scheme of the appearance detection equipment for automatic laser engraving of the light guide plate, the negative pressure adsorption cover is provided with a T-shaped gear rack, the two sides of the T-shaped gear rack are respectively meshed with the first gear and the second gear, the negative pressure adsorption cover is fixed with a first sliding bracket, the first sliding bracket is elastically connected to the T-shaped gear rack through a first spring, and the T-shaped gear rack is fixed with an abutting strip.

[0009] As an optional scheme of the appearance detection equipment for automatic laser engraving of the light guide plate, a partition plate is arranged between the cleaning chamber and the detection chamber, the partition plate is fixed on the detection box, a dust cover is mounted on the cleaning wet roller, two fixed strips are connected between the dust cover and the partition plate, a servo motor is fixed on the detection box, and one end of a rotating shaft of the servo motor is fixedly connected to the rotating shaft.

[0010] As an optional scheme of the appearance detection equipment for automatic laser engraving of the light guide plate, an electric push rod is fixed on the detection box, a mounting plate is fixed on the lower end of the piston rod of the electric push rod, the detection camera is fixed on the mounting plate, strip-shaped rods are fixed on the two sides of the mounting plate, abutting grooves are formed in the strip-shaped rods, a first L-shaped bracket is slidably connected to one side of the strip-shaped rod, a second spring is connected between the first L-shaped bracket and the strip-shaped rod, one end of the abutting head is located in the abutting groove, and the abutting head is elastically connected to the first L-shaped bracket through a third spring.

[0011] As an optional scheme of the appearance detection equipment for automatic laser engraving of the light guide plate, one side of the detection box is fixed with a support plate, one end of the cleaning seat is fixed with a guide rod, the guide rod is elastically connected with the support plate through a fourth spring, the support plate is fixed with a support strip, the support strip is rotatably connected with a bent plate, a torsion spring is connected between the bent plate and the support strip, and one end of the bent plate abuts against the cleaning seat.

[0012] As an optional scheme of the appearance detection equipment for automatic laser engraving of the light guide plate, a Z-shaped support is fixedly connected on the light strip, the Z-shaped support is elastically connected with the detection box through a fifth spring, one side of the light strip is fixed with a abutting wedge, and the abutting head is located above the abutting wedge.

[0013] As an optional scheme of the appearance detection equipment for automatic laser engraving of the light guide plate, a sliding support is fixed on the cleaning seat, a guide block is fixed on the back surface of the wiping strip, the guide block is elastically connected with the sliding support through a sixth spring, and a plug hole is formed in one end of the cleaning seat.

[0014] As an optional scheme of the appearance detection equipment for automatic laser engraving of the light guide plate, a second L-shaped support is slidably connected on the partition plate, and a seventh spring is connected between the second L-shaped support and the partition plate.

[0015] The present application has the following advantages: 1. In the appearance detection equipment for automatic laser engraving of the light guide plate, the completed light guide plate is conveniently conveyed to the cleaning chamber in the detection box for cleaning treatment through the conveying belt, the impurities attached to the light guide plate can be removed by the cooperation of the negative pressure adsorption cover and the plurality of mutually staggered distributed conical adsorption ports, and the impurities in the groove of the light guide plate are thoroughly cleaned by the reciprocating deflection brush plate on the negative pressure adsorption cover, which can improve the cleaning effect of the impurities on the light guide plate. The cleaning wet roller is arranged to rotate through the rotating shaft to uniformly apply cleaning solvent to the surface of the light guide plate to treat stubborn stains, thereby reducing the influence of impurities on the appearance detection of the light guide plate and improving the quality of the appearance detection. Meanwhile, the arc abutting block on the mounting ring can be synchronously rotated by the rotating shaft during the rotating process, so as to reciprocally abut the arc abutting block and the abutting strip. Under the cooperation of the first rotating column, the first gear and the first sliding support, the brush plate is driven to automatically reciprocally clean and move. After the impurities in the groove of the light guide plate are brushed out by the brush plate, the impurities can be immediately sucked and removed by the negative pressure airflow in the conical adsorption port, so as to reduce the phenomenon of dust scattering.

[0016] The detection camera in the detection chamber is matched with the light illumination lamp strip, so that the brightness contrast of the light guide plate in the inspection process is improved, the scratches, stains or internal gas mist defects on the light guide plate are easily identified, and the light transmittance parameter is measured.

[0017] 2、The appearance detection equipment for the automatic laser engraving of the light guide plate, the cleaning chamber and the detection chamber are separated by the partition plate, and the slot for the movement of the conveying belt is formed in the partition plate, so that the dust in the cleaning chamber can be prevented from entering the detection chamber to cause pollution, thereby ensuring the detection accuracy, the cleaning seat is provided for the installation of the wiping strip, and the dust attached to the wiping strip can be cleaned when the wiping strip contacts the light illumination lamp strip, so that the light blocking and transmission attenuation are reduced, the appearance detection accuracy is improved, the height of the cleaning seat below the detection chamber can be adjusted by the deflection of the deflection plate, so that the light illumination lamp strip is preliminarily cleaned by the wiping strip, and the horizontal position of the light illumination lamp strip can be adjusted when the abutting wedge block on the light illumination lamp strip is abutted, so that the light illumination lamp strip can closely adhere to the side surface of the light guide plate during detection, external stray light interference during detection can be avoided, and the detection quality is improved. When the working height of the detection camera is adjusted, the abutting head is synchronously lowered, the abutting head and one end of the deflection plate are abutted, the cleaning seat is moved upward, and the wiping strip preliminarily cleans the surface of the light illumination lamp strip, when the light illumination lamp strip is cleaned, the detection camera is lowered to the detection height, the abutting head vertically slides on the strip-shaped rod, the abutting head can move horizontally on the strip-shaped rod through the cooperation of the abutting groove, on the one hand, the abutting of the abutting head and the deflection plate is released, the cleaning seat is reset, the working of the light illumination lamp strip is avoided, and on the other hand, the abutting head and the abutting wedge block are abutted, so that the abutting wedge block automatically drives the light illumination lamp strip to abut on the side surface of the light guide plate, thereby improving the light illumination effect.

[0018] 3、The appearance detection equipment for the automatic laser engraving of the light guide plate, the wiping plate is provided, the residual moisture in the engraved groove of the light guide plate cleaned by the cleaning wet roller is wiped clean, so as to reduce the moisture and improve the detection accuracy, the second gear fixed on the second rotating column of the wiping plate can be engaged with the T-shaped rack, so that the T-shaped rack can drive the wiping plate to automatically reciprocate when the T-shaped rack reciprocates, the wiping efficiency is greatly improved, and the cleanliness of the surface of the light guide plate is ensured. Meanwhile, the sliding support on the cleaning seat is slidably connected with the wiping strip, when the wiping plate reciprocates, the second L-shaped support is horizontally moved through the cooperation of the second L-shaped support and the partition plate when the wiping plate reciprocates, one end of the second L-shaped support is inserted into the insertion hole in the cleaning seat to drive the wiping strip to automatically reciprocate, the cleaning dead angle is effectively reduced, and the cleaning quality of the light illumination lamp strip is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0020] Figure 2 It is the structural section view of the present application.

[0021] Figure 3 It is the schematic diagram of the internal structure of the cleaning chamber of the present application.

[0022] Figure 4 It is the schematic diagram of the internal structure of the detection chamber of the present application.

[0023] Figure 5 It is the schematic diagram of the T-shaped rack structure of the present application.

[0024] Figure 6 It is the schematic diagram of the internal structure of the cleaning seat of the present application.

[0025] Figure 7 It is the schematic diagram of the support plate structure of the present application.

[0026] Figure 8 It is the schematic diagram of the abutting head structure of the present application.

[0027] In the figure: 1, detection box; 2, cleaning chamber; 3, detection chamber; 4, conveying belt; 5, negative pressure adsorption cover; 6, brush plate; 7, cleaning wet roller; 8, wiping plate; 9, detection camera; 10, light bar; 11, cleaning seat; 12, wiping strip; 13, abutting wedge; 14, rotating shaft; 15, mounting ring; 16, arc abutting block; 17, first rotating column; 18, first gear; 19, second rotating column; 20, second gear; 21, T-shaped rack; 22, first sliding support; 23, first spring; 24, abutting strip; 25, partition plate; 26, dust cover; 27, second L-shaped support; 28, fixed strip; 29, servo motor; 30, electric push rod; 31, mounting plate; 32, strip-shaped rod; 33, abutting groove; 34, first L-shaped support; 35, second spring; 36, abutting head; 37, third spring; 38, support plate; 39, guide rod; 40, fourth spring; 41, support strip; 42, warped plate; 43, torsional spring; 44, U-shaped support; 45, seventh spring; 46, fifth spring; 47, sliding support; 48, guide block; 49, sixth spring; 50, jack; 51, conical suction port. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Embodiment one, please refer to Figures 1 to 8The utility model provides an appearance detection equipment for light guide plate automatic laser engraving, including detection box 1, detection box 1 is provided with cleaning chamber 2 and detection chamber 3 respectively, and detection box 1 is provided with conveying belt 4, both sides of cleaning chamber 2 are provided with negative pressure adsorption cover 5, and rotatable brush plate 6 and wiping plate 8 are arranged on negative pressure adsorption cover 5, rotatable cleaning wet roller 7 is arranged on the top of conveying belt 4, Adjustable detection camera 9 and abutting head 36 are arranged in detection chamber 3, movable light strip 10 and cleaning seat 11 are arranged on both sides of detection box 1, and wiping strip 12 is arranged in cleaning seat 11.

[0030] The pivot 14 is fixed on the detection box 1, the cleaning wet roller 7 is fixed on the pivot 14, and the one end of the pivot 14 is fixed with the mounting ring 15, and the arc abutting block 16 is fixed on the mounting ring 15.

[0031] The first rotating column 17 is fixed on one end of the brush plate 6, and the first rotating column 17 is rotatably connected to the negative pressure adsorption cover 5, and the first gear 18 is fixed on the first rotating column 17, the second rotating column 19 is fixed on one end of the wiping plate 8, and the second rotating column 19 is rotatably connected to the negative pressure adsorption cover 5, and the second gear 20 is fixed on the second rotating column 19.

[0032] The T-shaped rack 21 is arranged on the negative pressure adsorption cover 5, and the two sides of the T-shaped rack 21 are respectively engaged with the first gear 18 and the second gear 20, the first sliding bracket 22 is fixed on the negative pressure adsorption cover 5, the first sliding bracket 22 is elastically connected to the T-shaped rack 21 through the first spring 23, and the abutting strip 24 is fixed on the T-shaped rack 21.

[0033] The dust cover 26 is installed on the cleaning wet roller 7, and the two fixed strips 28 are connected between the dust cover 26 and the partition plate 25, the servo motor 29 is fixed on the detection box 1, and the motor shaft of the servo motor 29 is fixedly connected to one end of the pivot 14.

[0034] Reference Figures 1 to 5, the light guide plate is placed in the shallow groove, and position deviation is avoided during transportation. When the light guide plate moves into the cleaning chamber 2 of the detection box 1, the negative pressure adsorption cover 5 on both sides is connected with the dust collection equipment, and the local adsorption force is increased through cooperation of a plurality of conical adsorption ports 51 distributed in a staggered manner on the negative pressure adsorption cover 5, so that the effect of removing impurities on the light guide plate is improved. Since the negative pressure adsorption cover 5 is relatively long in size and has a wide working range, the impurities in the cleaning chamber 2 can also be adsorbed, so that dust can be prevented from passing through the partition plate 25 into the detection chamber 3. Meanwhile, the cleaning wet roller 7 is located within the adsorption range of the negative pressure adsorption cover 5, so that the adhesion of dust is reduced and the cleaning effect is improved. Meanwhile, the servo motor 29 drives the rotating shaft 14 to rotate, so that the cleaning wet roller 7 on the rotating shaft 14 and the arc-shaped abutting block 16 on the mounting ring 15 rotate synchronously. The arc-shaped abutting block 16 abuts against the abutting strip 24, so that the T-shaped rack 21 can reciprocate on the first sliding support 22. The first spring 23 continuously stores and releases elastic force, and when the T-shaped rack 21 is engaged with the first gear 18, the brush plate 6 on the first rotating column 17 can reciprocate and deflect on the negative pressure adsorption cover 5, so that the impurities in the groove of the light guide plate are thoroughly cleaned, and the effect of removing impurities on the light guide plate is improved. The brush plate 6 is a soft brush, which can prevent damage to the surface of the light guide plate and affect the detection accuracy. After the impurities in the groove of the light guide plate are brushed out, the impurities can be removed in time through the negative pressure airflow in the conical adsorption port 51, so that the phenomenon of dust splashing is reduced. The cleaning wet roller 7 is provided with a cleaning solvent filling port. The cleaning solvent is anhydrous ethanol solution, which can quickly dissolve organic stains such as oil, resin and gum on the light guide plate. After cleaning, the solvent can be volatilized without residue, so that secondary pollution is avoided. The cleaning wet roller 7 is made of superfine fiber material, which has strong adsorption capacity and cleaning effect, can penetrate into the tiny gap on the surface of the light guide plate, and remove dust and stains that are difficult to detect. When the moving light guide plate contacts the rotating cleaning wet roller 7, the cleaning solvent can be uniformly applied to the surface of the light guide plate and the engraved groove, so as to treat stubborn stains, reduce the influence of impurities on the appearance detection of the light guide plate, and improve the quality of the appearance detection. When the light guide plate moves through the partition plate 25 into the detection chamber 3, the brightness contrast of the light guide plate is improved during the inspection process through cooperation of the detection camera 9 in the detection chamber 3 and the light bar 10, so that scratches, stains or internal fog defects on the light guide plate can be easily identified, and the light transmittance parameter can be measured.

[0035] The conical adsorption port 51 is designed as a Venturi type adsorption port, which can improve the local adsorption effect. When a plurality of conical adsorption ports 51 are distributed in a staggered manner, the convection phenomenon of negative pressure air can be reduced, so that the adsorption effect of impurities is not affected.

[0036] The dust cover 26 installed on the cleaning wet roller 7 can reduce the dust in the cleaning chamber 2 from falling on the cleaning wet roller 7, thereby avoiding affecting the cleaning effect of the cleaning wet roller 7.

[0037] Secondly, the cleaning solvent is anhydrous ethanol, and the dust adhered to the cleaning solvent will not become mud, so that the cleaning wet roller 7 can be cleaned completely.

[0038] In the embodiment two, the improvement is made on the basis of the embodiment one, and the details can be known from Figures 1 to 8 The detection box 1 is fixed with an electric push rod 30, the lower end of the piston rod of the electric push rod 30 is fixed with a mounting plate 31, the detection camera 9 is fixed on the mounting plate 31, and the two sides of the mounting plate 31 are fixed with strip-shaped rods 32, the strip-shaped rods 32 are provided with abutting grooves 33, and the strip-shaped rods 32 are slidably connected with first L-shaped supports 34, the first L-shaped supports 34 are connected with second springs 35 between the strip-shaped rods 32, one end of an abutting head 36 is located in the abutting groove 33, and the abutting head 36 is elastically connected with the first L-shaped supports 34 through a third spring 37.

[0039] One side of the detection box 1 is fixed with a support plate 38, one end of the cleaning seat 11 is fixed with a guide rod 39, the guide rod 39 is elastically connected with the support plate 38 through a fourth spring 40, the support plate 38 is fixed with a support strip 41, the support strip 41 is rotatably connected with a flap 42, the flap 42 is connected with a torsion spring 43 between the support strip 41, and one end of the flap 42 abuts against the cleaning seat 11.

[0040] The cleaning seat 11 is fixed with a sliding support 47, the back surface of the wiping strip 12 is fixed with a guide block 48, the guide block 48 is elastically connected with the sliding support 47 through a sixth spring 49, and one end of the cleaning seat 11 is provided with a insertion hole 50.

[0041] The second L-shaped support 27 is slidably connected with the partition plate 25, and the second L-shaped support 27 is connected with a seventh spring 45 between the partition plate 25.

[0042] Reference Figures 2 to 8The light strip 10 is easy to absorb impurities in the air during the lighting process, so that when the light strip 10 illuminates the side of the light guide plate, light obstruction and transmission attenuation are easy to occur, affecting the detection effect. During the cleaning process of the light guide plate, the light strip 10 is cleaned synchronously, and the piston rod of the electric push rod 30 drives the mounting plate 31 to move, so that the detection camera 9, the strip rod 32 and the contact head 36 connected to the lower end of the strip rod 32 move downward synchronously, causing the contact head 36 to contact one end of the rocker 42, so that the rocker 42 deflects on the support bar 41 on the support plate 38, and the torsion spring 43 stores force. Since the elastic force of the second spring 35 is greater than the elastic force of the torsion spring 43, the position of the contact head 36 remains stationary. During the deflection of the rocker 42, the cleaning seat 11 can be prompted to move upward, driving the wiping strip 12 to perform preliminary cleaning on the surface of the light strip 10, and the guide rod 39 slides on the support plate 38, and the fourth spring 40 stores force; At the same time, when the T-shaped rack 21 reciprocates, it can mesh with the second gear 20 fixed with the second rotating column 19, which can drive the wiping plate 8 to automatically reciprocate and deflect, and can wipe the residual moisture in the carved groove of the light guide plate after cleaning the wet roller 7, thereby greatly improving the wiping efficiency and ensuring the cleanliness of the surface of the light guide plate, so as to reduce moisture and improve the detection accuracy. During the deflection of the wiping plate 8, it can conflict with the second L-shaped bracket 27, so that the second L-shaped bracket 27 slides on the partition 25, and the seventh spring 45 continuously accumulates force and releases elastic force, prompting one end of the second L-shaped bracket 27 to align with the socket 50, thereby inserting it into the cleaning seat 11 and pushing the guide block 48 to move horizontally on the sliding bracket 47. The sixth spring 49 continuously accumulates force and releases elastic force, prompting the wiping strip 12 to automatically reciprocate and clean the light strip 10 again, effectively reducing the cleaning dead angle and further improving the cleaning quality of the light strip 10.

[0043] Example 3: This example is an improvement made on the basis of Example 2. For details, please refer to Figures 1 to 8 A 匚-shaped bracket 44 is fixedly connected to the light strip 10, and the 匚-shaped bracket 44 is elastically connected to the detection box 1 through the fifth spring 46. A contact wedge 13 is fixed on one side of the light strip 10, and the contact head 36 is located above the contact wedge 13.

[0044] refer to Figures 2 to 7When the light guide plate moves to the detection position of the detection chamber 3, the conveying belt 4 stops running, at this time the detection camera 9 is lowered to the detection height, at this time the abutting head 36 continues to abut against the warped plate 42, as the warped plate 42 cannot continue to deflect, the abutting head 36 slides upward in the abutting groove 33, the first L-shaped support 34 slides on the strip-shaped rod 32, the second spring 35 stores energy, the abutting groove 33 is provided with a slope, so that the abutting head 36 moves horizontally on the first L-shaped support 34, the third spring 37 stores energy, the abutting head 36 and the warped plate 42 are disengaged, the cleaning seat 11 is automatically reset, the working of the light strip 10 is avoided, at the same time the abutting head 36 abuts against the abutting wedge 13, the abutting wedge 13 drives the light strip 10 to move horizontally, the U-shaped support 44 slides on the detection box 1, the fifth spring 46 stores energy, so that the abutting wedge 13 drives the light strip 10 to abut against the side of the light guide plate, so as to improve the lighting effect.

[0045] The support plate 38 is fixed with two blocking pieces, when the cleaning seat 11 is reset, the blocking pieces coincide with the blocking pieces, so as to reduce the dust entering the cleaning seat 11, so as to ensure the cleaning quality of the wiping strip 12.

[0046] It should be noted that the relative terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0047] The above description is only the preferred embodiment of the present application, it should be noted that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. An appearance inspection device for automatic laser engraving of a light guide plate, comprising a detection box (1), characterized in that: The detection box (1) is provided with a cleaning chamber (2) and a detection chamber (3), and a conveyor belt (4) is provided on the detection box (1). Negative pressure adsorption covers (5) are provided on both sides of the cleaning chamber (2). A rotatable brush plate (6) and a wiping plate (8) are provided on the negative pressure adsorption covers (5). A rotatable cleaning wet roller (7) is provided above the conveyor belt (4). An adjustable detection camera (9) and a contact head (36) are provided in the detection chamber (3), and movable lighting strips (10) and a cleaning seat (11) are provided on both sides of the detection box (1), wherein a wiping strip (12) is provided in the cleaning seat (11).

2. The appearance inspection device for automatic laser engraving of light guide plates according to claim 1, characterized in that: A rotating shaft (14) is fixed on the detection box (1), the cleaning wet roller (7) is fixed on the rotating shaft (14), and a mounting ring (15) is fixed on one end of the rotating shaft (14), and an arc-shaped resistance block (16) is fixed on the mounting ring (15).

3. The appearance inspection device for automatic laser engraving of light guide plates according to claim 1, characterized in that: A first rotating column (17) is fixed to one end of the brush plate (6), the first rotating column (17) is rotatably connected to the negative pressure adsorption cover (5), and a first gear (18) is fixed to the first rotating column (17). A second rotating column (19) is fixed to one end of the wiping plate (8), the second rotating column (19) is rotatably connected to the negative pressure adsorption cover (5), and a second gear (20) is fixed to the second rotating column (19).

4. The appearance inspection device for automatic laser engraving of light guide plates according to claim 3, characterized in that: The negative pressure adsorption cover (5) is provided with a T-shaped rack (21), and the two sides of the T-shaped rack (21) are respectively engaged with the first gear (18) and the second gear (20). A first sliding bracket (22) is fixed on the negative pressure adsorption cover (5), and the first sliding bracket (22) is elastically connected to the T-shaped rack (21) through a first spring (23). A resistance bar (24) is fixed on the T-shaped rack (21).

5. The appearance inspection device for automatic laser engraving of light guide plates according to claim 2, characterized in that: A partition (25) is provided between the cleaning chamber (2) and the detection chamber (3), and the partition (25) is fixed on the detection box (1). A dust cover (26) is installed on the cleaning wet roller (7), and two fixing bars (28) are connected between the dust cover (26) and the partition (25). A servo motor (29) is fixed on the detection box (1), and the motor shaft of the servo motor (29) is fixedly connected to one end of the rotating shaft (14). The negative pressure adsorption cover (5) is provided with a plurality of equally spaced conical adsorption ports (51).

6. The appearance inspection device for automatic laser engraving of light guide plates according to claim 1, characterized in that: An electric push rod (30) is fixed on the detection box (1). A mounting plate (31) is fixed to the lower end of the piston rod of the electric push rod (30). The detection camera (9) is fixed on the mounting plate (31). Both sides of the mounting plate (31) are fixed with strip-shaped rods (32). A抵触槽 (33) is formed in the strip-shaped rod (32). A first L-shaped bracket (34) is slidably connected to one side of the strip-shaped rod (32). A second spring (35) is connected between the first L-shaped bracket (34) and the strip-shaped rod (32). One end of the抵触头 (36) is located in the抵触槽 (33). The抵触头 (36) is elastically connected to the first L-shaped bracket (34) through a third spring (37).

7. The appearance inspection device for automatic laser engraving of light guide plates according to claim 1, characterized in that: A support plate (38) is fixed to one side of the detection box (1). A guide rod (39) is fixed to one end of the cleaning seat (11). The guide rod (39) is elastically connected to the support plate (38) through a fourth spring (40). A support strip (41) is fixed to the support plate (38). A rocker (42) is rotatably connected to the support strip (41). A torsion spring (43) is connected between the rocker (42) and the support strip (41). One end of the rocker (42) abuts against the cleaning seat (11).

8. The appearance inspection device for automatic laser engraving of light guide plates according to claim 6, characterized in that: A C-shaped bracket (44) is fixedly connected to the illumination lamp strip (10). The C-shaped bracket (44) is elastically connected to the detection box (1) through a fifth spring (46). A抵触楔块 (13) is fixed to one side of the illumination lamp strip (10). The抵触头 (36) is located above the抵触楔块 (13).

9. The appearance inspection device for automatic laser engraving of light guide plates according to claim 1, characterized in that: A sliding bracket (47) is fixed to the cleaning seat (11). A guide block (48) is fixed to the back surface of the wiping strip (12). The guide block (48) is elastically connected to the sliding bracket (47) through a sixth spring (49). A jack (50) is formed at one end of the cleaning seat (11).

10. The appearance inspection device for automatic laser engraving of light guide plates according to claim 5, characterized in that: A second L-shaped bracket (27) is slidably connected to the partition board (25). A seventh spring (45) is connected between the second L-shaped bracket (27) and the partition board (25). It should be noted that there are some Chinese characters in the original text that seem to be incorrect or incomplete. I translated them as "抵触槽", "抵触头", "抵触楔块" according to the context. If there are specific correct terms, it may need to be adjusted accordingly.

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