CN212275616U

CN212275616U - Visual inspection equipment for appearance of light guide plate of mobile phone

Info

Publication number: CN212275616U
Application number: CN202021996019.3U
Authority: CN
Inventors: 万英伟; 沈浩; 尹建群; 张东东; 宋培华
Original assignee: Lei Ao Vision Technology Dongguan Co ltd
Current assignee: Lei Ao Vision Technology Dongguan Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-01-01
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses a mobile phone light guide plate appearance visual detection device, which comprises a detection table, wherein the detection table is provided with a material taking station, a size detection and positioning station and an appearance detection station which are sequentially arranged along the length direction of the detection table, the size detection and positioning station is provided with a CCD visual positioning assembly, and the appearance detection station is provided with an appearance CCD visual detection assembly; examine test table both sides and be equipped with respectively and transport manipulator A and transport manipulator B, will be in waiting to examine that the light guide plate is waiting to be examined of getting the material station through transporting manipulator A and snatch and deliver to and supply CCD visual positioning subassembly to carry out the size detection during the detection, transport manipulator B and will accomplish the light guide plate that the size detected and transfer outward appearance CCD visual detection subassembly and carry out the appearance detection of dotting point. The detection of two indexes of the light guide plate is completed by adopting a full-automatic step-by-step detection mode, and the detection is matched with an independent detection assembly, so that the detection efficiency and the detection precision are favorably improved, the online detection requirement of mass production is met, the operation is simple, the overall layout is compact, and the occupied space is small.

Description

Visual inspection equipment for appearance of light guide plate of mobile phone

Technical Field

The utility model relates to a cell-phone spare part detects technical field, concretely relates to cell-phone light guide plate outward appearance visual detection equipment.

Background

The backlight module is one of the key components of the liquid crystal display panel, and has the function of supplying sufficient light source with uniform brightness and distribution, so that the backlight module can normally display images. The light guide plate of the mobile phone is used as an important part of a backlight module of the mobile phone, has the functions of guiding the scattering direction of light, improving the brightness of a panel and ensuring the uniformity of the brightness of the panel, is formed by high-precision injection molding, has strict appearance and size requirements, and particularly has the light scattering effect of a point surface of the light guide plate, and directly influences the overall quality of the light guide plate.

The detection of the light guide plate dotting surface (v-cut surface) is currently a common method that a worker performs highlight from different angles, and then the worker performs identification and detection through naked eyes, the work is long, visual damage is extremely easy to cause to the worker, the requirements on self skills and experience of the worker are high, the detection efficiency is relatively low, good detection quality is difficult to guarantee, large-batch production requirements cannot be met, although some automatic visual detection equipment also appears in the market, for example, the publication number is 'CN 211318238U', the patent name is 'a mobile phone light guide plate defect visual automatic identification equipment', the utility model discloses a patent can be used for detecting the defects of the light guide plate, the overall efficiency is relatively low, the on-line detection requirements are difficult to meet, and the detection precision of the light guide plate dotting surface is poor due to the adoption of a direct camera shooting mode.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a cell-phone light guide plate outward appearance visual detection equipment can realize the short-term test of two indexs of cell-phone light guide plate size and appearance quality, improves detection efficiency and quality, satisfies the on-line measuring demand.

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

the utility model provides a cell-phone light guide plate outward appearance visual detection equipment, is including examining test table, and its key lies in: the detection platform is provided with a material taking station, a size detection and positioning station and an appearance detection station which are arranged along the length direction of the detection platform, wherein the size detection and positioning station is provided with a CCD visual positioning assembly for detecting the size of the light guide plate, and the appearance detection station is provided with an appearance CCD visual detection assembly for detecting the appearance quality of the dot surface of the light guide plate;

examine test table both sides and be equipped with respectively and transport manipulator A and transport manipulator B, wherein transport manipulator A and be used for waiting to examine that the light guide plate will be in and get the material station and snatch and deliver to size detection and location station, perhaps transfer the outward appearance and detect the station, transport manipulator B and be used for the light guide plate to detect and fix a position the transportation between station and outward appearance detection station at the size.

Scheme more than adopting, mainly utilize CCD visual positioning subassembly and outward appearance to detect the station to the light guide plate size parameter respectively with beat a little the face and expand the light effect and detect, improved detection effect greatly, the overall arrangement is compact, and full automatization operation satisfies mass production demand, is favorable to reducing staff occupational health risk simultaneously.

Preferably, the method comprises the following steps: CCD visual positioning subassembly includes the rotary platform of vertical setting to and be used for driving this rotary platform along examining test table width direction rectilinear slide's lead screw module A, the rotary platform top has rotary joint, the last tool A that supports the level setting of rotary joint, tool A top is equipped with CCD area array camera and light source A. Scheme more than adopting, it is whole along examining test table width direction slip to drive rotary platform through lead screw module A, can make tool A accept the light guide plate that a plurality of positions sent to carry out position control at width direction, make it be under light source A, lie in CCD area array camera's within range promptly, can adjust tool A's position through rotary platform rotation in addition, make it suit with outward appearance CCD visual detection subassembly, improve space utilization, it is whole compacter.

Preferably, the method comprises the following steps: the CCD area-array camera is provided with an angle adjusting structure A. By adopting the scheme, the angle of the CCD area-array camera can be adjusted as required, and the detection requirements of more types of light guide plates are met.

Preferably, the method comprises the following steps: the appearance CCD visual detection assembly comprises a jig B and a lead screw module B, wherein the lead screw module B is used for driving the jig B to linearly slide along the width direction of the detection table, a light source B is arranged on the jig B, a CCD linear array camera is arranged above the jig B, the CCD linear array camera inclines downwards, and the inclination angle of the CCD linear array camera is 0-60 degrees. Scheme more than adopting, the mode that adopts line scanning detects the surface of light guide plate, and manual observation relatively, its efficiency is higher, and the quality is more reliable, and the detection of shooing relatively, its stability and precision are higher, are favorable to further improving the scanning precision.

Preferably, the method comprises the following steps: the jig B comprises a jig bottom plate and a jig plate fixedly arranged on the jig bottom plate, the light source B is an LED line light source and is positioned at one end of the jig plate, and emergent light of the light source B is parallel to the jig plate and is positioned above the jig plate. Adopt the parallel light to try light to the light guide plate from the incident mode of tip, the mode of polishing is adopted to the tradition to the cooperation line scanning, compares and adopts the multi-angle, detects out the light guide plate more easily and beats a little the face light diffusion degree of consistency, and the result reliability is higher.

Preferably, the method comprises the following steps: one end of the jig bottom plate, which corresponds to the light source B, is provided with a sinking platform A, and a radiator is arranged in the sinking platform A;

the jig plate is characterized in that one end, close to the light source B, of the jig plate is provided with a light source light guide sheet, the light source light guide sheet is fixed to the upper surface of the jig plate through a cover plate and is attached to a light emitting surface of the light source B, and the front edge of the cover plate is flush with the light source light guide sheet. By adopting the scheme, the emergent light of the light source B is transmitted by the light guide sheet of the light source, so that the condition that the light generated by the light source B forms a dark area on the light guide plate to influence the accuracy of a detection result is avoided, and the precision and the reliability of the detection result are improved.

Preferably, the method comprises the following steps: the material taking station is provided with a turnover manipulator, and the turnover manipulator comprises a vertical plate arranged along the thickness direction of the detection table and a lead screw module C for driving the vertical plate to lift;

the vertical plate upper end is provided with a rotary cylinder base arranged along the width direction of the detection table, at least one rotary gripper is arranged on the rotary cylinder base, the rotary gripper comprises a sucker fixing seat C extending outwards along the length direction of the detection table and is used for driving the sucker fixing seat C to rotate, and a traceless sucker is arranged on the sucker fixing seat C. Scheme more than adopting, upset manipulator mainly used upset light guide plate when guaranteeing to send tool A to on, the dotting face of light guide plate is up to improve and detect the precision.

Preferably, the method comprises the following steps: the transfer manipulator A comprises a cantilever A arranged along the width direction of the detection table and a servo belt module A used for driving the cantilever A to horizontally slide along the length direction of the detection table, and the cantilever A is provided with at least one sucker fixing seat A and a slide rail cylinder A used for driving the corresponding sucker fixing seat A to move up and down;

transport manipulator B and include along the cantilever B who examines test table width direction setting to and be used for driving cantilever B along examining test table length direction horizontal slip's servo belt module B, be equipped with sucking disc fixing base B on the cantilever B, and be used for the drive sucking disc fixing base B elevating movement's step lead screw motor, sucking disc fixing base A and sucking disc fixing base B all are equipped with the no trace sucking disc that the working face down.

The scheme more than adopting satisfies the demand of transporting, improves space utilization efficiency simultaneously to guarantee the transportation steadiness of light guide plate, and be convenient for adopt unified control, guarantee that the light guide plate places the position degree of accuracy, improve and detect the precision.

Preferably, the method comprises the following steps: it all has to enclose the fender to examine test table top and circumference outside, examines the position that is close to outward appearance detection station on the test table and is equipped with unloading manipulator. By adopting the scheme, the dust-free environment required by detection is guaranteed, the environmental interference is reduced, the detection effect is improved, meanwhile, the rapid blanking is facilitated, and the detection efficiency is improved.

Compared with the prior art, the beneficial effects of the utility model are that:

adopt the utility model provides a cell-phone light guide plate outward appearance visual detection equipment adopts the mode that full automatization substep detected to accomplish two kinds of indexes of light guide plate and detects, cooperates independent determine module, is favorable to improving detection efficiency and detects the precision, satisfies mass production on-line measuring demand, easy operation, and overall arrangement is compact, and occupation space is little.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a perspective view of the present invention;

FIG. 3 is a schematic view of the internal structure of the inspection station;

FIG. 4 is a schematic structural view of the flipping robot;

fig. 5 is a schematic view of the internal structure of the transfer robot a;

FIG. 6 is a schematic view of a CCD visual positioning assembly;

FIG. 7 is a schematic structural view of a transfer robot B;

FIG. 8 is a schematic structural view of an appearance CCD visual inspection assembly;

FIG. 9 is a schematic structural view of a jig B;

FIG. 10 is an enlarged view of a portion of FIG. 9 at A;

fig. 11 is an exploded view of the jig B.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

Referring to fig. 1 to 11, the apparatus for visual inspection of appearance of a light guide plate of a mobile phone mainly includes an inspection table 100, as shown in the figure, the inspection table 100 is substantially rectangular, and has a material taking station 110, a size detecting and positioning station 120 and an appearance detecting station 130 which are sequentially divided along a length direction, wherein the size detecting and positioning station 120 is provided with a CCD visual positioning assembly 200 for detecting a size of the light guide plate, the appearance detecting station 130 is provided with an appearance CCD visual detecting assembly 300 for detecting an appearance quality of the light guide plate after dotting, two sides of the inspection table 100 in the length direction are respectively provided with a transferring manipulator a400 and a transferring manipulator B500, wherein the transferring manipulator a400 is used for grabbing the light guide plate to be inspected at the material taking station 110 and delivering the light guide plate to the size detecting and positioning station 120 for the CCD visual positioning assembly 200 to perform size detection, and the transferring manipulator B500 is used for transferring the light, for the appearance CCD visual inspection component 300 to perform the dotting surface appearance inspection.

In this embodiment, it is preferable that the size detection and positioning station 120 is located before the appearance detection station 130, which is mainly convenient for arrangement, reduces occupied space, and improves overall compactness.

Referring to fig. 3 and 6, the CCD visual positioning assembly 200 mainly includes a rotary platform 210, a lead screw module a220, a fixture a230, a CCD area array camera 240 and a light source a250, as shown in the figure, the lead screw module a220 is disposed along the width direction of the inspection table 100, the rotary platform 210 is fixed on the lead screw module a220 and can slide linearly along the width direction of the inspection table 100 under the driving of the lead screw module a220, a rotary joint 211 is disposed at the top of the rotary platform 210, the fixture a230 is fixed on the rotary joint 211 in a horizontal posture and can horizontally rotate under the action of the rotary platform 210, and the fixture a230 is a vacuum adsorption type fixture.

The CCD area-array camera 240 and the light source a250 are both located right above the size detection and positioning station 120, as shown in the figure, one end of the detection table 100 is provided with an upright frame 160, the upright frame 160 is provided with a cross arm a161 which is arranged along the length direction of the detection table 100 and extends to the position above the size detection and positioning station 120, the CCD area-array camera 240 and the light source a250 are both fixedly arranged on the cross arm a161, meanwhile, the CCD area-array camera 240 is also provided with an angle adjustment structure a260, the angle adjustment structure a260 in the embodiment is mainly composed of an arc-shaped groove arranged on a fixed plate, and the rotation angle of the CCD area-array camera 240 is limited by the arc-shaped groove.

Referring to fig. 3, 8 to 11, the external CCD vision inspection assembly 300 of the present application mainly includes a jig B310, a lead screw module B320, a light source B311, and a CCD line camera 330, the lead screw module B320 is disposed along the width direction of the inspection table 100, the jig B310 is disposed on the lead screw module B320 and can move linearly along the width direction of the inspection table 100 under the action of the lead screw module B320, the stand 160 has a cross arm B162 disposed along the width direction of the inspection table 100, the CCD line camera 330 is fixed on the cross arm B162 in an inclined downward posture, and corresponding to the sliding path of the jig B310, the jig B310 can scan the whole surface of the CCD line camera 330 on the sliding stroke, the included angle between the CCD line camera 330 and the vertical direction in the embodiment is within 0-60 degrees, in order to improve the reliability of scanning detection, the light source B311 is disposed on the fixture B310 and can slide along with the fixture B310, so as to ensure the uniformity of the luminosity during scanning.

In order to further improve the detection accuracy and reduce the damage to the light guide plate, the jig B310 in this embodiment mainly includes a jig bottom plate 312 and a jig plate 313 disposed on the jig bottom plate 312, the jig bottom plate 312 is made of metal or other hard materials, and is mainly used for cooperating with the lead screw module B320, the jig plate 313 is made of teflon, and of course, may be made of other materials, or is directly attached to the surface film and other structures on the bottom plate 312, and mainly plays a role in buffering, thereby preventing the light guide plate from being damaged on the bottom plate 312, and is provided with a vacuum absorption joint 3130, and the stability of the light guide plate is maintained by using the vacuum absorption mode.

As shown in the figure, the jig base plate 312 has two sinking tables arranged along the length direction, which are a sinking table a3120 and a sinking table B3121, wherein the sinking table a3120 is slightly higher than the sinking table B3121, a protruding portion 3122 is arranged between the sinking table a3120 and the sinking table B3121, the jig plate 313 is fixedly arranged in the sinking table B3121, the upper surface of the jig plate 313 is higher than the upper surface of the protruding portion 3122, the light source B311 is substantially in the shape of a strip plate, and is a linear light source formed by LEDs and arranged on the protruding portion 3122 along the width direction of the jig base plate 312, an emergent light substrate of the linear light source is parallel to the upper surface of the jig plate 313 and is slightly higher than the upper surface of the jig plate 313, and a heat sink 314 is arranged in the sinking table a3120 and is tightly attached to the rear surface of.

The upper surface of the fixture plate 313 is provided with a light source light guide plate 315 at a position close to the light source B311, in this embodiment, the light source light guide plate 315 mainly functions to diffuse the light source and enhance the light intensity, as shown in the figure, the light source light guide plate 315 is in a sheet shape, the thickness of the light guide plate is adapted to the height of the light source B311 protruding from the upper surface of the jig plate 313, the rear side of the light guide plate 315 at least partially protrudes above the protruding portion 3122, and closely attached to the emitting side of the light source B311, and finally fixed by the cover plate 316, and the front edge of the cover plate 316 is flush with the light guide sheet 315 of the light source, so as to prevent the light from emitting from the upper part to cause interference, meanwhile, the light source B311 is prevented from being in direct contact with the jig plate 313, the jig plate 313 is prevented from being too hot, the cover plate 316 is connected with the jig bottom plate 312 through screws, the light source light guide sheet 315, the light source B311 and the radiator 314 can be simultaneously pressed, the installation difficulty is favorably reduced, and the maintenance or replacement of each component in the later period is facilitated.

In addition, the CCD line camera 330 is configured with an angle adjusting structure 340, which is mainly used to adjust the inclination angle and the relative height of the CCD line camera 330, so as to meet the detection requirements of light guide plates with different specifications.

Referring to fig. 5 and 7, the transferring manipulator a400 and the transferring manipulator B500 in the present application have similar structures, wherein the transferring manipulator a400 includes a cantilever a410 disposed along the width direction of the detection platform 100, and a servo belt module a420 for driving the cantilever a410 to horizontally slide along the length direction of the detection platform 100, and at least one suction cup fixing seat a430 and a slide rail cylinder a440 for driving the corresponding suction cup fixing seat a430 to move up and down are disposed on the cantilever a 410.

Transfer manipulator B500 includes along examining cantilever B510 that test table 100 width direction set up to and be used for driving cantilever B510 along examining test table 100 length direction horizontal slip's servo belt module B520, be equipped with sucking disc fixing base B530 on cantilever B510, and be used for the drive sucking disc fixing base B530 elevating movement's step screw motor 540, sucking disc fixing base A430 and sucking disc fixing base B530 all are equipped with the no trace sucking disc that the working face down.

Considering the situation that the light guide plate dotting surface sent from the conveying line to the material taking station 110 may face downward, a turning manipulator 600 is further disposed at the material taking station 110, as shown in fig. 4, the turning manipulator 600 includes a vertical plate 610 disposed along the thickness direction of the detection table 100, and a screw rod module C620 for driving the vertical plate 610 to ascend and descend, a rotary cylinder base 630 disposed along the width direction of the detection table 100 is disposed at the upper end of the vertical plate 610, at least one rotary gripper 640 is disposed on the rotary cylinder base 630, the rotary gripper 640 includes a suction cup fixing base C650 extending outward along the length direction of the detection table 100, and a rotary cylinder 660 for driving the suction cup fixing base C650 to rotate, and a non-mark suction cup is disposed on the suction cup fixing base C650.

During the installation, lead screw module C620 sets firmly on examining test table 100 through support 670, as shown in the figure, it has the installing port to examine the position on test table 100, support 670 inserts in this installing port, the upper end of support 670 have with examine test table 100 parallel arrangement's connecting portion 6700, connecting portion 6700 passes through the screw and examines test table 100 fixed connection, mounting means more than adopting is favorable to realizing the modularization equipment, improve equipment final assembly efficiency, the later stage troubleshooting and the investigation of being convenient for equally etc..

In this embodiment, in order to fully improve equipment detection efficiency, so have two parallel arrangement's rotatory tongs 640 on upset manipulator 600, and have two parallel arrangement's sucking disc fixing base a430 on the transfer manipulator a400, and the position of two sucking disc fixing base a430 suits with two positions of upset manipulator 600, if when the light guide plate arrives the material taking station with the gesture of dotting face down, then can rely on upset manipulator 600 to suck it up and overturn 180, make its dotting face up after, again absorb by transfer manipulator a400 and transfer to size detection and location station 120.

In addition, in the embodiment, two traceless suction cups are disposed on the suction cup fixing seat a430, the suction cup fixing seat B530 and the suction cup fixing seat C650, so as to improve the reliability thereof, and the traceless suction cups have similar structures.

Referring to fig. 1 and 2, in order to sufficiently improve the accuracy of the detection result and reduce the environmental impact, in this embodiment, the circumferential outer side and the top of the detection platform 100 are both provided with the enclosure 140 to ensure that the detection environment is in a relatively closed environment, and the air purifier 150 is disposed above the enclosure 140, so that the enclosure 140 is cleaned by the air purifier 150, which is beneficial to maintaining a clean environment.

The position, close to the appearance detection station 130, on the detection table 100 is provided with a blanking manipulator 700, the blanking manipulator 700 is positioned outside the appearance CCD vision detection assembly 300, and the blanking manipulator 700 is mainly used for grabbing and placing the light guide plate, which is used for completing detection on the jig B310, onto a discharge line.

Referring to fig. 1 to 11, the mobile phone light guide plate appearance visual inspection apparatus mainly includes the following steps:

firstly, the detection device is butted with a feeding line 900 and a discharging line 800, wherein the tail end of the feeding line 900 corresponds to the material taking station 110 on the detection table 100, the initial end of the feeding line 900 is connected with the production line or the storage feeding mechanism of the light guide plate, so that the light guide plate can be continuously conveyed to the material taking station 110 through the feeding line 900, the initial end of the discharging line 800 corresponds to the appearance detection station 130 on the detection table 100, and the tail end of the discharging line 800 is correspondingly provided with a plurality of film coating machines, so that the light guide plate which completes two-step detection can be grabbed and placed on the discharging line 800 through the blanking manipulator 700 and conveyed to different film coating machines through the discharging line 800 for film coating.

And secondly, transferring the light guide plate at the material taking station 110 to a jig A230 by using a transferring manipulator A400, wherein the jig A230 is in a posture vertical to the jig B310, and in the transferring process, if the dotting surface of the light guide plate at the material taking station 110 is downward, the light guide plate is firstly grabbed by a turnover manipulator 600 and turned over, and then transferred by the transferring manipulator A400.

And thirdly, lighting the light source A250, carrying out size detection by photographing through the CCD area array camera 240, turning off the light source A250 after the photographing of the CCD area array camera 240 is finished, comparing the position of the jig B310 according to the photographing result of the CCD area array camera 240, controlling the rotary platform 210 to drive the jig A230 to rotate, adjusting the parallelism of the jig A230 and the jig B310 in parallel, namely ensuring that the jig A230 and the jig B310 are in relatively accurate parallel postures, and improving the position accuracy when the light guide plate is grabbed and placed on the jig B310.

Fourthly, the light guide plate which completes the size detection is transferred to a jig B310 by using a transferring mechanical arm B500, the posture of the light guide plate is kept unchanged in the grabbing process, meanwhile, the transferring mechanical arm B500 is guided to act by using the photographing result communication of the CCD area array camera 240, so that when the light guide plate is placed on the jig B310, the end part of the light guide plate can be attached to a light guide sheet 315 of a light source, gaps between the two surfaces are reduced, or the gaps are eliminated, and the light source B311 is lightened, after the CCD linear array camera 330 is started, the jig B310 is driven to slide by a lead screw module B320, so that the jig B310 moves linearly and is scanned by the CCD linear array camera 330, the appearance detection of the dotting surface of the light guide plate.

Fifthly, the light guide plate which is finished with the dotting surface appearance detection is grabbed and placed on the discharging line 800 by using the discharging mechanical arm 700, so that the influence of dust pollution on the light guide plate before reaching the laminating machine is reduced, and a transparent dustproof cover plate 810 is arranged on the discharging line 800 close to the tail end in the actual implementation process.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. The utility model provides a cell-phone light guide plate outward appearance visual inspection equipment, is including examining test table (100), its characterized in that: the detection platform (100) is provided with a material taking station (110), a size detection and positioning station (120) and an appearance detection station (130) which are arranged along the length direction of the detection platform, wherein the size detection and positioning station (120) is provided with a CCD visual positioning assembly (200) for detecting the size of the light guide plate, and the appearance detection station (130) is provided with a CCD visual detection assembly (300) for detecting the appearance quality of the light guide plate;

detect platform (100) both sides and be equipped with respectively and transport manipulator A (400) and transport manipulator B (500), wherein transport manipulator A (400) and be used for waiting to examine that the light guide plate will be in and get material station (110) and snatch and send size detection and location station (120) or outward appearance detection station (130), transport manipulator B (500) and be used for the light guide plate to detect and fix a position the transportation between station (120) and outward appearance detection station (130) at size.

2. The visual inspection device for the appearance of the light guide plate of the mobile phone according to claim 1, wherein: CCD visual positioning subassembly (200) are including vertical rotary platform (210) that sets up to and be used for driving this rotary platform (210) along examining test table (100) width direction rectilinear slide's lead screw module A (220), rotary platform (210) top has rotary joint (211), support tool A (230) that the level set up on rotary joint (211), tool A (230) top is equipped with CCD area array camera (240) and light source A (250).

3. The visual inspection device for the appearance of the light guide plate of the mobile phone according to claim 2, wherein: the CCD area-array camera (240) is provided with an angle adjustment structure A (260).

4. The visual inspection device for the appearance of the light guide plate of the mobile phone according to claim 1, wherein: the CCD visual detection assembly (300) comprises a jig B (310) and a screw rod module B (320) used for driving the jig B (310) to linearly slide along the width direction of the detection table (100), a light source B (311) is arranged on the jig B (310), a CCD linear array camera (330) is arranged above the jig B (310), the CCD linear array camera (330) inclines downwards, and the inclination angle of the CCD linear array camera is 0-60 degrees.

5. The visual inspection device for the appearance of the light guide plate of the mobile phone according to claim 4, wherein: the jig B (310) comprises a jig base plate (312) and a jig plate (313) fixedly arranged on the jig base plate (312), the light source B (311) is an LED linear light source and is positioned at one end of the jig plate (313), and emergent light of the light source B is parallel to the jig plate (313) and is positioned above the jig plate (313).

6. The visual inspection device for the appearance of the light guide plate of the mobile phone according to claim 5, wherein: one end of the jig bottom plate (312) corresponding to the light source B (311) is provided with a sinking platform A (3120), and a radiator (314) is arranged in the sinking platform A (3120);

the fixture plate (313) is provided with a light source light guide sheet (315) at one end close to the light source B (311), the light source light guide sheet (315) is fixed on the upper surface of the fixture plate (313) through a cover plate (316) and is attached to the light emitting surface of the light source B (311), and the front edge of the cover plate (316) is flush with the light source light guide sheet (315).

7. The visual inspection device for the appearance of the light guide plate of the mobile phone according to claim 1, wherein: the material taking station (110) is provided with a turnover manipulator (600), the turnover manipulator (600) comprises a vertical plate (610) arranged along the thickness direction of the detection table (100) and a screw rod module C (620) used for driving the vertical plate (610) to lift;

riser (610) upper end has along the revolving cylinder base (630) that detects platform (100) width direction and set up, has at least one rotatory tongs (640) on this revolving cylinder base (630), rotatory tongs (640) include along the outside sucking disc fixing base C (650) that extends of length direction who detects platform (100) to and be used for the drive sucking disc fixing base C (650) pivoted revolving cylinder (660), be equipped with the no trace sucking disc on sucking disc fixing base C (650).

8. The visual inspection device for the appearance of the light guide plate of the mobile phone according to claim 7, wherein: the transfer manipulator A (400) comprises a cantilever A (410) arranged along the width direction of the detection platform (100), and a servo belt module A (420) used for driving the cantilever A (410) to horizontally slide along the length direction of the detection platform (100), wherein at least one sucker fixing seat A (430) and a slide rail air cylinder A (440) used for driving the corresponding sucker fixing seat A (430) to move up and down are arranged on the cantilever A (410);

transport manipulator B (500) including along examining cantilever B (510) that test table (100) width direction set up to and be used for driving cantilever B (510) along examining test table (100) length direction horizontal slip's servo belt module B (520), be equipped with sucking disc fixing base B (530) on cantilever B (510), and be used for the drive sucking disc fixing base B (530) elevating movement's step screw motor (540), sucking disc fixing base A (430) and sucking disc fixing base B (530) all are equipped with the no trace sucking disc that the working face down.

9. The visual inspection device for the appearance of the light guide plate of the mobile phone according to claim 1, wherein: the upper part and the circumferential outer side of the detection table (100) are provided with a surrounding baffle (140), and a blanking manipulator (700) is arranged at a position, close to the appearance detection station (130), on the detection table (100).