A liquid crystal screen defect detection device

Abstract

The utility model relates to notebook detection technical field, concretely relates to a LCD screen defect detection device, including main control electric cabinet, material entrance blocking station, preposition adjustment station and detection station, and the detection station includes notebook positive push subassembly, two -stage push screen subassembly, back push reset subassembly and camera subassembly, and notebook enters this device through the guide structure and imports the preposition after from the front section assembly line, and after preadjustment through preposition adjustment station enters camera subassembly work area, and after being in position, two -stage push screen subassembly pushes forward and moves and pushes the screen to the back push reset subassembly position, and the notebook positive push subassembly retreats after screen shaping is in position, and the system automatically adjusts the detection camera position to ensure clear imaging, and the image processing system electric connection with the detection camera carries out image acquisition and processing according to the system setting, and gives the qualified or unqualified result, and then can improve the detection precision, reduces the difference influence of artificial factor, realizes the consistency of product detection higher effect.

Description

Technical Field

[0001] This utility model relates to the field of notebook computer testing technology, and in particular to a device for detecting defects in liquid crystal screens. Background Technology

[0002] The core advantages of laptops lie in their portability, adaptability to various scenarios, and balance of overall performance, which can meet diverse needs such as mobile office, learning and entertainment, and professional creation. Laptops are widely used in daily life.

[0003] Under current technology, after a laptop is assembled, screen defects need to be detected. However, traditional methods mainly rely on human visual inspection, which is inefficient, cannot guarantee accuracy, is prone to missed detections, and requires a lot of labor for inspectors, resulting in low efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a defect detection device for LCD screens, which can improve detection accuracy, reduce the influence of human factors, and achieve a higher consistency in product testing.

[0005] To achieve the above objectives, this utility model provides a liquid crystal screen defect detection device, including a main control cabinet. A material feeding blocking station is provided on one side of the main control cabinet, a pre-positioning adjustment station is provided on one side of the material feeding blocking station, a material feeding blocking station is also provided on one side of the material feeding blocking station, and a detection station is provided on the left side of the pre-positioning adjustment station.

[0006] The detection station includes a laptop forward push component, a secondary screen push component, a rear push return component, and a camera component. The secondary screen push component is located on the upper side of the laptop forward push component, and a screen push rod is located in front of it. The rear push return component is driven by a servo electric cylinder and is aligned with the laptop forward push component. The detection camera of the camera component is driven by a moving component to achieve horizontal and vertical movement and is located on one side of the secondary screen push component.

[0007] The notebook forward push component is provided with a forward push positioning tray and a switching component on the side near the backward push return component.

[0008] The detection station is located on the side away from the pre-positioning adjustment station, and a rejection station is provided on the rejection station.

[0009] The rejection station is provided behind the rejection station, and a roller conveyor line is provided on the rejection conveyor station.

[0010] The moving component includes an X-axis moving part and a Z-axis moving part. The Z-axis moving part is disposed on the slide of the X-axis moving part and the detection camera is fixedly connected and installed thereon. The X-axis moving part is disposed on the right side of the detection station.

[0011] The detection camera is a 150-megapixel high-resolution camera, equipped with a 90mm focal length lens.

[0012] This utility model discloses a liquid crystal screen defect detection device. After a laptop enters the device from the front end of the production line, it is guided to a predetermined position by a guide structure and pre-adjusted by a pre-positioning adjustment station before entering the working area of ​​the camera component. Once in position, the secondary screen pushing component moves forward to push the screen to the position of the rear push-back component. After the screen is shaped into position, the laptop forward pushing component retracts. The system automatically adjusts the position of the detection camera to ensure clear imaging. The image processing system, electrically connected to the detection camera, performs image acquisition and processing according to system settings and provides a pass or fail result. After the inspection is completed, the screen flows to the next workstation for further inspection or processing, thereby improving the detection accuracy, reducing the influence of human factors, and achieving a higher consistency in product inspection. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a top view of the LCD screen defect detection device of this utility model.

[0015] Figure 2 This is a schematic diagram showing the placement of the push-screen rod of this utility model.

[0016] Figure 3 This is a schematic diagram showing the installation position of the detection camera of this utility model.

[0017] Figure 4 This is a structural schematic diagram of the rejection conveying station of this utility model.

[0018] In the diagram: 101-Main control cabinet, 102-Infeed blocking station, 1021-Infeed blocking, 103-Pre-positioning adjustment station, 104-Inspection station, 105-Notebook forward push assembly, 106-Secondary screen push assembly, 107-Backward push return assembly, 108-Camera assembly, 109-Forward push positioning tray, 110-Switching component, 111-Rejection station, 1111-Rejection push rod, 112-Rejection conveyor station, 1121-Roller conveyor line, 113-X-direction moving component, 114-Z-direction moving component, 115-Inspection camera, 116-Screen push round bar. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0020] like Figures 1 to 4 As shown, where Figure 1 This is a top view of an LCD screen defect detection device. Figure 2 This is a diagram showing the placement of the push-screen bar. Figure 3 This is a diagram showing the camera's setup location. Figure 4 This is a structural diagram of the conveying station. This utility model provides a liquid crystal screen defect detection device: it includes a main control cabinet 101, an infeed blocking station 102, a pre-positioning adjustment station 103, and a detection station 104. The detection station 104 includes a notebook forward push component 105, a secondary screen push component 106, a backward push return component 107, and a camera component 108. The moving components include an X-axis moving component 113 and a Z-axis moving component 114. The aforementioned solution can improve detection accuracy, reduce the impact of human factors, and achieve higher consistency in product inspection. It is understood that the aforementioned solution can improve detection accuracy and achieve higher consistency in product inspection.

[0021] In this embodiment, the main control cabinet 101 is used for mounting and supporting the working components of the device, and also houses electrical components such as the control PLC.

[0022] The main control cabinet 101 has an infeed blocking station 102 on one side, a pre-positioning adjustment station 103 on one side of the infeed blocking station 102, and an infeed blocking station 1021 on one side of the infeed blocking station 102. A detection station 104 is located to the left of the pre-positioning adjustment station 103. The infeed blocking station 1021 is used for limiting and guiding the laptop during transport. When the laptop is transported, its screen has a certain initial angle, which facilitates the angle adjustment of the secondary screen pushing component 106.

[0023] The secondary screen-pushing component 106 is disposed on the upper side of the laptop forward-pushing component 105, and a screen-pushing rod 116 is disposed in front of it. The rear-push-back component 107 is driven by a servo electric cylinder and is aligned with the laptop forward-pushing component 105. The detection camera 115 of the camera component 108 is driven by a moving component to achieve horizontal and vertical movement and is disposed on one side of the secondary screen-pushing component 106. The secondary screen-pushing component 106, the laptop forward-pushing component 105, and the rear-push-back component 107 are all driven by servo electric cylinders. The servo electric cylinder on 06 pushes the screen-pushing rod 116 to move linearly, thereby adjusting the screen angle. Before pushing, the servo electric cylinder of the notebook forward push component 105 moves the limiting plate linearly to abut the front edge of the notebook, facilitating the overall positioning of the notebook before screen adjustment. Then, the servo electric cylinder of the rear push return component 107 can move the support plate of the rear anti-shaping support structure away from the notebook after the notebook angle adjustment is completed, facilitating the continued conveying of the notebook after inspection. The notebook inspection feeding and post-inspection conveying are both achieved by belt conveyors set in coordination between the corresponding workstations.

[0024] The notebook forward push assembly 105 is provided with a forward push positioning tray 109 and a switching component 110 on the side near the backward push return assembly 107. The forward push positioning tray 109 is used for positioning after the notebook is pushed forward. The switching component 110 is a linkage and limit switch structure. When the notebook is pushed and slid, it will be positioned above the two forward push positioning trays 109 after it is fully positioned. At this time, when the linkage of the switching component 110 is pressed by the rear bottom of the notebook, the linkage moves downward and compresses the return spring, and finally squeezes the limit switch. Then the control PLC receives a feedback signal. At this time, the notebook is fully positioned in the forward push, and the system controls the working parts of the next step to move directly.

[0025] Secondly, a rejection station 111 is provided on the side of the inspection station 104 away from the pre-positioning adjustment station 103, and a rejection pusher 1111 is provided on the rejection station 111. When the screen of the laptop is found to be unqualified, the rejection pusher 1111 pushes the laptop onto the worktable of the rejection station 111. The rejection pusher 1111 is an electric pusher, and its output end is connected to a push plate for easy pushing. Then, the laptop is pushed to the roller conveyor line 1121 for conveying by an electric pushing device on the worktable.

[0026] Then, a rejection conveyor station 112 is provided behind the rejection station 111, and a roller conveyor line 1121 is provided on the rejection conveyor station 112. The roller conveyor line 1121 is used for temporary storage and conveying of defective laptops.

[0027] Furthermore, the Z-axis moving component 114 is mounted on the slide of the X-axis moving component 113 and the inspection camera 115 is fixedly connected to it; the X-axis moving component 113 is located on the right side of the inspection station 104. Both the Z-axis moving component 114 and the X-axis moving component 113 adopt a screw-rail structure as used in the prior art, similar to the X-axis and Z-axis moving structures of existing vertical machining centers. That is, both consist of a linear guide sliding mechanism, a transmission screw, a slide, and a servo motor with an encoder and a brake mechanism. The linear guide of the X-axis moving component 113 is mounted on the frame on the right side of the inspection station 104. A linear slider is mounted on the linear guide, and the linear slider is connected to the slide by bolts. The servo motor is mounted on the inspection station 104. 4. On the right side of the frame, the transmission screw is rotatably mounted on both sides via rotating bearings. Its T-shaped mating nuts are fixed to the slide block by bolts. The output shaft is connected to the output shaft of the servo motor via a coupling. The Z-axis moving component 114 is connected to the slide block of the X-axis moving component 113 via an L-shaped connecting plate. Then, the corresponding linear guide sliding mechanism, transmission screw, slide block, and servo motor with encoder and brake mechanism of the Z-axis moving component 114 are all mounted on the L-shaped connecting plate, and the detection camera 115 is fixed to the slide block by bolts. The Z-axis moving component 114 and the X-axis moving component 113 are used to control the vertical and horizontal movement of the detection camera 115 for position adjustment. The corresponding servo drivers and other control components are installed inside the main control cabinet 101.

[0028] Finally, the detection camera 115 is a 150-megapixel high-resolution camera, equipped with a 90mm focal length lens.

[0029] When using this utility model to improve detection accuracy, reduce the impact of human factors, and achieve higher consistency in product testing, the laptop enters the device from the front-end assembly line and is guided to a predetermined position by the guide structure. After pre-adjustment by the predetermined position adjustment station 103, it enters the working area of ​​the camera component 108. Once in position, the secondary screen pushing component 106 pushes forward, driving the screen pushing rod 116 to move and push the screen to the position of the rear push-back component 107. Before pushing, the laptop forward pushing component 105 needs to be controlled to move in advance to push the laptop and the rear push-back component 107 into position for engagement. Then, the secondary screen pushing component 106... Only when the servo electric cylinder of the 6 can it move the screen-pushing rod 116 to adjust the screen angle. After the screen is shaped into place, the laptop forward pushing component 105 retracts. The system controls the Z-axis moving component 114 and the X-axis moving component 113 to automatically adjust the position of the detection camera 115 to ensure clear imaging. The image processing system electrically connected to the detection camera 115 performs image acquisition and processing according to the system settings and gives a qualified or unqualified result. After the inspection is completed, the screen flows to the next workstation for further inspection or processing, thereby improving the inspection accuracy, reducing the influence of human factors, and achieving a higher consistency in product inspection.

[0030] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A liquid crystal screen defect detection device, comprising a main control cabinet, characterized in that: A material feeding blocking station is provided on one side of the main control cabinet, a pre-positioning adjustment station is provided on one side of the material feeding blocking station, a material feeding blocking station is also provided on one side of the material feeding blocking station, and a detection station is provided on the left side of the pre-positioning adjustment station. The detection station includes a laptop forward push component, a secondary screen push component, a rear push return component, and a camera component. The secondary screen push component is located on the upper side of the laptop forward push component, and a screen push rod is located in front of it. The rear push return component is driven by a servo electric cylinder and is aligned with the laptop forward push component. The detection camera of the camera component is driven by a moving component to achieve horizontal and vertical movement and is located on one side of the secondary screen push component. The notebook forward push component is provided with a forward push positioning tray and a switching component on the side near the backward push return component.

2. The liquid crystal screen defect detection device as described in claim 1, characterized in that: A rejection station is provided on the side of the detection station away from the prepositioning adjustment station, and a rejection push rod is provided on the rejection station.

3. The liquid crystal screen defect detection device as described in claim 2, characterized in that: A rejection conveying station is provided behind the rejection station, and a roller conveyor line is provided on the rejection conveying station.

4. The liquid crystal screen defect detection device as described in claim 1, characterized in that: The moving component includes an X-axis moving part and a Z-axis moving part. The Z-axis moving part is disposed on the slide of the X-axis moving part and the detection camera is fixedly connected and installed thereon. The X-axis moving part is disposed on the right side of the detection station.

5. The liquid crystal screen defect detection device as described in claim 1, characterized in that... : The detection camera is a 150-megapixel high-resolution camera, equipped with a 90mm focal length lens.

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