Automatic testing and screening equipment for warping degree of cover plate

Abstract

The utility model provides automatic testing and screening equipment for warping degree of a cover plate. The automatic testing and screening equipment comprises a multi-laser scanning device, an assembly line platform, an ink jet device and a control module, the control module is electrically connected with the multi-laser scanning device, the assembly line platform and the ink jet device. The multi-laser scanning device is used for detecting the warping degree of the cover plate, and when the warping degree of the cover plate exceeds a set range, the cover plate is a defective product; and the ink jet device is used for starting an ink jet function and making a mark on the cover plate when the cover plate is a defective product. The multi-laser scanning device is used for emitting laser to the glass face of the cover plate, whether the warping degree of the cover plate is within the set range or not is judged according to the measurement result, automatic testing and screening of the warping degree of the cover plate are achieved, the production efficiency is improved, misjudgment is avoided, and automatic full inspection is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to an automatic testing and screening device for the warping of a cover plate. Background Art

[0002] In the field of display technology, the cover plate is an indispensable part. In order to ensure that the cover plate fits tightly with the display screen, a warpage test is required. The traditional method of testing the cover plate warpage is to manually use a plug gauge to fill the entire workpiece for measurement, and to control the four sides of the glass. This not only slows down the work efficiency, but also easily causes scratches due to improper operation. In addition, the traditional method pays great attention to test specifications, but due to the different abilities of testers, the techniques cannot be 100% consistent. When the plug gauge cannot measure the data in the center area, it will lead to human misjudgment. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes an automatic testing and screening device for the warping of a cover plate.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An automatic testing and screening device for cover plate warpage, comprising: a multi-laser scanning device, an assembly line platform, an inkjet device and a control module;

[0006] The control module is electrically connected to the multi-laser scanning device, the assembly line platform and the inkjet device respectively;

[0007] The multi-laser scanning device is used to detect the warpage of the cover plate. When the warpage of the cover plate exceeds the set range, the cover plate is a defective product;

[0008] The inkjet device is used to start the inkjet function and make a mark on the cover plate when the cover plate is a defective product.

[0009] As a preferred improvement of the utility model, the control module is used to transfer the cover plate placed on the assembly line platform to directly below the multi-laser scanning device;

[0010] The control module is also used to control the cover plate to be transported to the bottom of the inkjet device when the warping degree of the cover plate exceeds a set range, and control the inkjet device to start the inkjet function.

[0011] As a preferred improvement of the present invention, the multi-laser scanning device includes four laser rangefinders.

[0012] As a preferred improvement of the utility model, the multi-laser scanning device further includes a housing;

[0013] The shell is a rectangular box-shaped structure with an opening downward;

[0014] The four laser rangefinders are respectively arranged at the center of the front, rear, left and right surfaces inside the shell, and the four laser rangefinders are arranged at the same horizontal line.

[0015] As a preferred improvement of the utility model, the assembly line platform also includes a lifting platform;

[0016] The lifting platform is arranged directly below the multi-laser scanning device. When the cover plate is transferred to the lifting platform, the cover plate is lifted into the shell body, and the cover plate and the laser emission port of the laser rangefinder are kept at the same horizontal line.

[0017] As a preferred improvement of the present invention, the lifting platform includes an infrared sensor, and the infrared sensor is used to sense whether the cover plate is correctly transferred to the lifting platform.

[0018] As a preferred improvement of the utility model, the lifting platform further includes a lifting platform plane and a lifting shaft;

[0019] The initial position of the lifting platform plane is kept level with the assembly line platform;

[0020] The lifting shaft is connected to the lifting platform plane. When the cover plate is correctly transferred to the lifting platform, the lifting shaft is started to make the lifting platform plane rise.

[0021] As a preferred improvement of the present invention, the control module is also used to control the lifting shaft to drive the lifting platform plane to descend to the initial position after the multi-laser scanning device completes the measurement and records the data.

[0022] As a preferred improvement of the present invention, the lifting platform further comprises a limit block, and the limit block is connected below the lifting shaft.

[0023] As a preferred improvement of the present invention, the setting range is 0-0.3 mm.

[0024] Compared with the prior art, the advantages and positive effects of the utility model are:

[0025] In the utility model, a multi-laser scanning device is used on the assembly line to replace manual measurement of the warpage of the glass product. The multi-laser scanning device emits laser to the glass surface of the cover plate. If it is identified as a good product, the equipment can flow away and be transported normally on the assembly line platform. If it is a defective product, when the cover plate flows to the next process, the inkjet device will start the inkjet function after receiving the information of the previous process, and leave a mark such as "NG" on the defective product, which is convenient for distinction in the later stage of the production line, can improve production efficiency, avoid misjudgment, and realize automatic full inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1A schematic diagram of the structure of an automatic testing and screening device for cover plate warpage provided by the utility model;

[0027] Figure 2 A schematic diagram of the structure of an automatic testing and screening device for cover plate warpage provided by the utility model;

[0028] Figure 3 A schematic diagram of the laser light principle provided by the utility model;

[0029] Figure 4 The utility model provides a test schematic diagram. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0031] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0034] See also Figure 1 , the utility model embodiment provides a technical solution:

[0035] An automatic testing and screening device for cover plate warpage includes: a multi-laser scanning device 100, an assembly line platform 200, an inkjet device 300 and a control module 400;

[0036] The control module 400 is electrically connected to the multi-laser scanning device 100, the assembly line platform 200 and the inkjet device 300 respectively;

[0037] The multi-laser scanning device 100 is used to detect the warpage of the cover plate 500. When the warpage of the cover plate 500 exceeds a set range, the cover plate 500 is a defective product.

[0038] The inkjet device 300 is used to start the inkjet function and make a mark on the cover plate 500 when the cover plate 500 is a defective product.

[0039] Preferably, the control module can be arranged inside the device, or the device can be connected to an independent control device externally as the control module.

[0040] In the utility model, a multi-laser scanning device is used on the assembly line to replace manual measurement of the warpage of the glass product. The multi-laser scanning device emits laser to the glass surface of the cover plate. If it is identified as a good product, the equipment can flow away and be transported normally on the assembly line platform. If it is a defective product, when the cover plate flows to the next process, the inkjet device will start the inkjet function after receiving the information of the previous process, and leave a mark such as "NG" on the defective product, which is convenient for distinction in the later stage of the production line, can improve production efficiency, avoid misjudgment, and realize automatic full inspection.

[0041] As a preferred improvement of the present utility model, the control module 400 is used to transfer the cover plate placed on the assembly line platform 200 to directly below the multi-laser scanning device 100;

[0042] The control module 400 is also used to control the cover plate to be transferred to the bottom of the inkjet device 300 when the warpage of the cover plate exceeds a set range, and control the inkjet device 300 to start the inkjet function. The ink sprayed by the inkjet device can be any ink, and the spray mark can be the word "NG", which is used to distinguish defective products at the back end, thereby improving the detection efficiency.

[0043] As a preferred improvement of the present invention, please refer to Figure 2 The multi-laser scanning device 100 includes four laser rangefinders 110. When working, the laser rangefinder emits a very thin laser beam to the target, and the laser beam reflected by the target is received by the photoelectric element. The timer measures the time from the emission to the reception of the laser beam, and calculates the distance from the observation end to the target.

[0044] As a preferred improvement of the present invention, please refer to Figure 2, the multi-laser scanning device 100 further includes a housing 120;

[0045] The housing 120 is a rectangular box-shaped structure with an opening downward;

[0046] The four laser rangefinders 110 are respectively arranged at the center of the front, rear, left and right sides of the housing 120, and the four laser rangefinders 110 are arranged at the same horizontal line. Multiple laser rangefinders improve the detection accuracy and efficiency of the equipment.

[0047] As a preferred improvement of the present invention, please refer to Figure 2 , the assembly line platform 200 also includes a lifting platform 210;

[0048] The lifting platform 210 is disposed directly below the multi-laser scanning device 100. When the cover plate 500 is transferred to the lifting platform 210, the cover plate 500 is lifted into the shell 120, and the cover plate 500 and the laser outlet of the laser rangefinder 110 are kept at the same horizontal line.

[0049] As a preferred improvement of the present invention, please refer to Figure 2 The lifting platform 210 includes an infrared sensor 211, and the infrared sensor 211 is used to sense whether the cover plate is correctly transferred to the lifting platform.

[0050] As a preferred improvement of the present invention, please refer to Figure 2 , the lifting platform 210 also includes a lifting platform plane 212 and a lifting shaft 213;

[0051] The initial position of the lifting platform plane 212 is kept level with the assembly line platform 200;

[0052] The lifting shaft 213 is connected to the lifting platform plane 212 . When the cover plate 500 is correctly transferred to the lifting platform, the lifting shaft 213 is started to make the lifting platform plane 212 rise.

[0053] The distance moved by the assembly line platform in each test is equal, which can ensure that the cover plate is transferred to the lifting platform and the cover plate 500 is located at a preset position directly below the multi-laser scanning device 100 .

[0054] As a preferred improvement of the present invention, the control module 400 is also used to control the lifting axis 213 to drive the lifting platform plane 212 to descend to the initial position after the multi-laser scanning device 100 completes the measurement and records the data, so as to continue the assembly line test.

[0055] As a preferred improvement of the present invention, please refer to Figure 2 The lifting platform 210 also includes a limit block 214, which is connected below the lifting shaft 213 and is used to limit the lifting of the lifting platform.

[0056] As a preferred improvement of the present invention, the setting range is 0-0.3 mm.

[0057] The specific working principle of the technical solution provided in the embodiment of the utility model is as follows: by setting up a lifting platform, when the assembly line sends the cover plate to the lifting platform, the infrared ray senses that the cover plate is in place, and the control module will start the lifting shaft to transport the cover plate upwards so that the bottom surface of the glass of the cover plate is in the same plane as the laser rangefinder. The laser rangefinder simultaneously emits laser to the glass surface, and the device starts to measure and record data. Figure 3-4 As shown, if the set range is within 0.3mm, when the warpage of the test cover is within the set range, the laser is irradiated on the edge of the cover or the increase is within a smaller range. If it meets this range, it is judged as a good product and can be directly transmitted; when the warpage of the test cover is not within the set range, the increase exceeds a certain range, such as exceeding 0.3mm, it is a defective product, and the warpage of the cover is judged to be excessive. After the measurement, the lifting platform descends to the initial position. If it is identified as a good product, the machine will flow and transport normally. If it is a defective product, when the cover flows to the inkjet device, the inkjet device receives the information of the previous process, starts the inkjet function, and leaves a mark such as "NG" on the defective product, which is convenient for the later stage of the production line to distinguish. Improve production efficiency, avoid misjudgment, and realize automatic full inspection.

[0058] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An automatic testing and screening device for cover plate warpage, characterized in that: include: Multi-laser scanning device, assembly line platform, inkjet device and control module; The control module is electrically connected to the multi-laser scanning device, the assembly line platform and the inkjet device respectively; The multi-laser scanning device is used to detect the warping of the cover plate. When the warping of the cover plate exceeds a set range, the cover plate is a defective product. The inkjet device is used to start the inkjet function and make a mark on the cover plate when the cover plate is a defective product.

2. The automatic testing and screening equipment for cover plate warpage according to claim 1, characterized in that: The control module is used to transfer the cover plate placed on the assembly line platform to directly below the multi-laser scanning device; The control module is also used to control the cover plate to be transported to the bottom of the inkjet device when the warping degree of the cover plate exceeds a set range, and control the inkjet device to start an inkjet function.

3. The automatic testing and screening equipment for cover plate warpage according to claim 1, characterized in that: The multi-laser scanning device includes four laser rangefinders.

4. The automatic testing and screening equipment for cover plate warpage according to claim 3, characterized in that: The multi-laser scanning device also includes a housing; The housing is a rectangular box-shaped structure with an opening downward; The four laser rangefinders are respectively arranged at the center of the front, rear, left and right surfaces inside the shell, and the four laser rangefinders are arranged at the same horizontal line.

5. The automatic testing and screening device for cover plate warpage according to claim 4, characterized in that: The assembly line platform also includes a lifting platform; The lifting platform is arranged directly below the multi-laser scanning device. When the cover plate is transferred to the lifting platform, the cover plate is lifted into the shell and the cover plate and the laser outlet of the laser rangefinder are kept at the same horizontal line.

6. The automatic testing and screening equipment for cover plate warpage according to claim 5, characterized in that: The lifting platform includes an infrared sensor, and the infrared sensor is used to sense whether the cover plate is correctly transferred to the lifting platform.

7. The automatic testing and screening device for cover plate warpage according to claim 6, characterized in that: The lifting platform also includes a lifting platform plane and a lifting axis; The initial position of the lifting platform plane is kept level with the assembly line platform; The lifting shaft is connected to the lifting platform plane. When the cover plate is correctly transferred to the lifting platform, the lifting shaft is started to make the lifting platform plane rise.

8. The automatic testing and screening equipment for cover plate warpage according to claim 7, characterized in that: The control module is also used to control the lifting shaft to drive the lifting platform plane to descend to the initial position after the multi-laser scanning device completes the measurement and records the data.

9. The automatic testing and screening equipment for cover plate warpage according to claim 7, characterized in that: The lifting platform also includes a limit block, which is connected below the lifting shaft.

10. The automatic testing and screening equipment for cover plate warpage according to claim 1, characterized in that: The setting range is 0-0.3 mm.

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