CN214718521U - Optical detection equipment for backlight module - Google Patents

Abstract

The utility model relates to a backlight unit optical detection equipment, include: the lighting fixture is used for placing the backlight module; the lighting fixture comprises a feeding station, an optical detection station and a discharging station, wherein the lighting fixture is arranged on each of the feeding station, the optical detection station and the discharging station; the optical detection station is provided with an optical detection mechanism, and the optical detection mechanism is used for detecting and judging the backlight module. The rotary table mechanism is divided into at least three areas which are respectively a feeding station, an optical detection station and a discharging station; and the grabbing mechanism is arranged on the backlight module optical detection equipment or other adjacent devices and is used for grabbing the backlight module and/or transmitting the backlight module. Utilize the carousel structure in this equipment, have the advantage that overall dimension is little, can shorten the test time of monolithic product simultaneously, promote the productivity.

Description

Optical detection equipment for backlight module

Technical Field

The utility model belongs to panel detection area especially relates to a backlight unit optical detection equipment.

Background

The backlight module is one of the key components of the liquid crystal display panel, and because the liquid crystal itself has no light-emitting characteristic, a light-emitting source must be added on the bottom surface of the panel to achieve a full color display effect. The quality of the backlight module determines important parameters of the liquid crystal display screen such as brightness, emergent light uniformity and color level, and the light emitting effect of the liquid crystal display screen is determined to a great extent. Therefore, in the production process of the backlight module, the detection of the defects of foreign matters, white spots, scratches, insufficient bonding, uneven brightness and the like of the inner layer and the outer layer is very important.

At present, most factories mainly depend on manual work to inspect the backlight module, the detection method not only consumes a large amount of labor cost and has low efficiency, but also can generate visual fatigue due to manual long-time inspection to cause a missing detection phenomenon, and different manual inspection results have difference. And if replace artifical the detecting through the visual inspection system, just can greatly reduced cost of labor, equipment can be long-time continuous operation can not be tired to the uniformity that detects the parameter setting can guarantee the uniformity of testing result. Therefore, in the prior art, the backlight module is inspected by the backlight module optical inspection equipment of the line body. However, the whole equipment occupies a large space, and the whole testing time is long.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned deficiencies of the prior art, in whole or in part, it is an object of the present invention to: the backlight module optical detection equipment is small in overall size, and capable of shortening detection time of single-chip products and improving production performance through the turntable structure.

In order to achieve the above object, the utility model provides a following technical scheme:

a backlight module optical detection device comprises:

the lighting fixture is used for placing the backlight module;

the lighting fixture comprises a feeding station, an optical detection station and a discharging station, wherein the lighting fixture is arranged on each of the feeding station, the optical detection station and the discharging station; the optical detection station is provided with an optical detection mechanism, and the optical detection mechanism is used for detecting and judging the backlight module.

The rotary table mechanism is divided into at least three areas which are respectively a feeding station, an optical detection station and a discharging station;

and the grabbing mechanism is arranged on the backlight module optical detection equipment or other adjacent devices and is used for grabbing the backlight module and/or transmitting the backlight module.

Owing to adopt the carousel structure in this application, avoided straight strip type or linear type production line to arrange, avoided the whole occupation space of equipment shortcoming such as big, transmission path length, wholly improved efficiency. In order to reduce the detection misjudgment rate, the product that this application is related to still is provided with clean station, clean station also is provided with the tool of lighting a lamp for clean backlight unit. For example, cleaning the backlight module before detection; therefore, preferably, the cleaning station and the optical detection station are located in the same area of the turntable mechanism; or the cleaning station and the optical detection station are combined into a cleaning and optical detection station.

Further, in order to avoid problems of production line blockage, production stagnation and the like, a buffer station is arranged between the feeding station and the cleaning and optical detection station. At this time, the number of partial or all kinds of stations can be more than one by the radius of the turntable mechanism, the size of each station and the like. The feeding station, the buffering station, the cleaning and optical detection station and the discharging station are sequentially arranged clockwise or anticlockwise. It should be noted that when four stations are provided, the angle between adjacent stations is preferably 90 °.

The equipment further comprises a first product conveying line and/or a second product conveying line, the grabbing mechanism grabs the corresponding backlight module according to the detection result of the optical detection mechanism and transmits the backlight module to the corresponding product conveying line, such as the first or second product conveying line, for example, if the product grade is divided into a qualified grade and an unqualified grade, the first product conveying line is a qualified product conveying line, and the second product conveying line is an unqualified product conveying line; specifically, the grabbing mechanism grabs qualified products to the qualified product conveying line, and the grabbing mechanism grabs unqualified products to the unqualified product conveying line. The grabbing mechanism is preferably a mechanical claw which is provided with an overpressure buffer unit and an overpressure feedback unit, so that the phenomenon that the jig damages a product due to the position deviation of the product is avoided. The qualified product conveying line quickly conveys qualified products to downstream, and meanwhile, the unqualified products conveyed to the unqualified product conveying line are subjected to subsequent processes such as manual re-judgment and overhaul.

The lighting jig is adjustable in size, can be compatible with backlight modules of various sizes, and is convenient to adjust and high in adaptability.

The utility model provides a pair of backlight unit optical detection equipment has following beneficial effect: (1) the equipment realizes the processes of feeding, cleaning, checking, judging, re-judging and the like. (2) The equipment has small integral size, compact structure and small occupied space. (3) The equipment shortens the testing time of single-chip products and improves the productivity through a turntable structure. (4) The lighting fixture in the equipment can be compatible with backlight modules with various sizes, is convenient to adjust and has lower cost.

Drawings

In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive efforts.

Fig. 1 is a schematic perspective view of the optical inspection apparatus for backlight module according to the present invention;

fig. 2 is a top view of the optical inspection apparatus for backlight module of the present invention.

Reference numerals: 1-a feeding station; 2-a blanking station; 21-qualified product conveying line; 22-an off-spec product delivery line; 23-a gripping mechanism; 3-a buffer station; 4-cleaning and optical detection station; 41-a cleaning mechanism; 42-an automated optical detection mechanism; 5-a turntable mechanism; 6-lighting a lamp; 7-backlight module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model provides a backlight unit optical detection mechanism equipment please refer to fig. 1 and fig. 2, and backlight unit optical detection mechanism equipment of this embodiment includes: the device comprises a feeding station 1, a discharging station 2, a buffer station 3, a cleaning and optical detection station 4, a turntable mechanism 5, a lighting fixture 6 for placing a backlight module 7 and a grabbing mechanism 23 for grabbing the backlight module 7.

The feeding station 1, the buffering station 3, the cleaning and optical detection station 4 and the blanking station 2 are sequentially arranged anticlockwise, the lighting jig 6 is arranged on the feeding station 1, the lighting jig 6 is adjustable in size and compatible with backlight modules of various sizes, the lighting jig 6 is installed on the turntable mechanism 5, and under the action of the turntable mechanism 5, the backlight module 7 on the lighting jig 6 normally sequentially passes through the feeding station 1, the buffering station 3, the cleaning and optical detection station 4 and the blanking station 2.

The cleaning and optical detection station 4 is provided with a cleaning mechanism 41 and an optical detection mechanism, and an automatic optical detection mechanism 42 is adopted in the embodiment. The cleaning mechanism 41 is used for cleaning the surface of a product to be tested, so that misjudgment of the automatic optical detection mechanism 42 caused by dirt is avoided, and the test stability is improved. The cleaning mechanism 41 is preferably disposed above the automatic optical detection mechanism 42. The automatic optical detection mechanism 42 is used for detecting whether the product has defects such as scratches, foreign matters, bright spots, black and white shadows, light leakage, bright lines, burrs, too low brightness and the like, and judging whether the backlight module is qualified or not according to a detection result. In other embodiments, the position of the cleaning mechanism may be set according to the specific structure and shape of the cleaning mechanism, as long as the cleaning of the backlight module can be performed before the detection of the automatic optical detection mechanism 42, which is not described herein again.

The equipment further comprises a qualified product conveying line 21 and an unqualified product conveying line 22, and the grabbing mechanism 23 grabs the qualified products detected and judged by the automatic optical detection mechanism 42 to the qualified product conveying line 21 and grabs the unqualified products to the unqualified product conveying line 22.

The qualified product conveying line 21 quickly conveys the qualified products to the downstream, and meanwhile, manual re-judgment is carried out on the unqualified products conveyed to the unqualified product conveying line 22.

The optical detection equipment for the backlight module provided by the embodiment executes the following steps:

(1) a first product is put into the lighting fixture 6 at the feeding station 1, and a start button is pressed;

(2) the turntable mechanism 5 rotates anticlockwise by 90 degrees to drive a first product to the buffer station 3, and meanwhile, a second product is put into the feeding station 1;

(3) the turntable mechanism 5 rotates anticlockwise by 90 degrees to drive a first product to a cleaning and optical detection station 4, a second product is transferred to a buffer station 3 while cleaning and automatic optical detection are finished, and a third product is put into a feeding station 1;

(4) the turntable mechanism 5 rotates anticlockwise by 90 degrees to drive a first product to the blanking station 2, and the grabbing mechanism 23 selects to place the first product on the qualified product conveying line 21 or the unqualified product conveying line 22 according to the judgment of the automatic optical detection mechanism 42; driving a second product to a cleaning and optical detection station 4, completing cleaning and automatic optical detection, simultaneously transferring a third product of a feeding station 1 to a buffer station 3, and feeding a fourth product to the feeding station 1;

(5) the turntable mechanism 5 rotates anticlockwise by 90 degrees to drive a second product to the blanking station 2, and the grabbing mechanism 23 puts the product to the qualified product conveying line 21 or the unqualified product conveying line 22 according to the judgment result of the automatic optical detection; driving a third product to a cleaning and optical detection inspection station 4, and putting a fifth product in a feeding station 1 while completing cleaning and automatic optical detection inspection; and circulating the above actions to finish the automatic optical detection of the backlight module product.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement that there is an element defined as "comprising" … … does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. The utility model provides a backlight unit optical detection equipment which characterized in that includes:

the lighting fixture is used for placing the backlight module;

the lighting fixture comprises a feeding station, an optical detection station and a discharging station, wherein the lighting fixture is arranged on each of the feeding station, the optical detection station and the discharging station; the optical detection station is provided with an optical detection mechanism, and the optical detection mechanism is used for detecting and judging the backlight module;

the rotary table mechanism is divided into at least three areas which are respectively a feeding station, an optical detection station and a discharging station;

and the grabbing mechanism is arranged on the backlight module optical detection equipment and is used for grabbing the backlight module and/or transmitting the backlight module.

2. The optical inspection apparatus for backlight modules as claimed in claim 1, further comprising a cleaning station, wherein the cleaning station is also provided with a lighting fixture for cleaning the backlight module.

3. The apparatus of claim 2, wherein the cleaning station and the optical inspection station are located in the same region of the turntable mechanism.

4. The backlight module optical inspection apparatus of claim 3, further comprising a buffer station disposed between the loading station and the cleaning and optical inspection station.

5. The apparatus of claim 4, wherein the turntable mechanism is configured to have four regions corresponding to the loading station, the buffering station, the cleaning and optical inspection station, and the unloading station.

6. The backlight module optical inspection apparatus of any of claims 1-3 further comprising a first product delivery line and/or a second product delivery line.

7. The apparatus of claim 6, wherein the pick-up mechanism sorts the backlight modules according to the inspection results of the optical inspection mechanism when the first and second product conveying lines are both disposed.

8. The apparatus of any one of claims 1-3, wherein the grasping mechanism is a gripper, and the gripper is provided with an overpressure buffer and an overpressure feedback unit.

9. The optical inspection apparatus for backlight module according to any of claims 1-3, wherein the lighting fixture is adjustable in size and compatible with backlight modules of various sizes.

10. The optical detection device for the backlight module according to claim 5, wherein the feeding station, the buffering station, the cleaning and optical detection station and the blanking station are sequentially arranged clockwise or counterclockwise, and an included angle between adjacent stations is 90 °.

Images