Display glass warping degree detection device

Abstract

The invention discloses a display glass warping degree detection device which comprises a detection table and a probe matrix, a driving table is arranged below the detection table, a plurality of driving rollers arranged in parallel are arranged on the driving table, and passing grooves corresponding to the driving rollers one to one are formed in the detection table; the driving table is driven by a lifting mechanism to enable the driving roller to extend out of or retract into the passing groove; the probe matrix comprises a pressing frame and a plurality of probes arranged in a matrix mode, the probes are vertically connected to the pressing frame in a sliding mode, the probes are connected with position sensors, and the pressing frame drives the probes to be close to or away from the display glass to be detected. The detection table is fixed to the corresponding detection position on the display glass conveying line, when the display glass is fed and needs to be detected, the display glass directly and stably falls onto the detection table to be detected, carrying and transferring are not needed, and the detection efficiency is improved; after the probe matrix is pressed on the display glass, the position sensor converts the signal into an electric signal and outputs the electric signal; and the reliability is greatly improved through direct contact type detection.

Description

Technical Field

[0001] The present application belongs to the field of display glass production, and in particular relates to a display glass warpage detection device. Background Art

[0002] Display glass is one of the most important components on a display. Its quality directly affects the pass rate of the entire display, so display glass needs to be strictly tested.

[0003] In the inspection process of display glass, warpage is one of the important inspection parameters, and the size of the warpage directly affects the surface flatness of the display. Existing display glass warpage inspection is mostly transferred to a dedicated inspection table by manual or robotic arms. During the inspection, manual or automated equipment is used to detect the warpage of each position of the display glass using the reflection principle of laser or ultrasound. However, manual transfer or transfer by robotic arms is not only inefficient, but also has the risk of bumping and falling during the transfer process, which further increases uncertainty and has a certain impact on the pass rate; and laser or ultrasonic detection is easily affected by the ambient temperature and humidity, and the accuracy and reliability are poor.

[0004] Therefore, a warpage detection device for display glass is needed to solve the above problems. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, the present application provides a display glass warpage detection device, which can not only be installed on the display glass transmission line for on-line detection, but also is not affected by the surrounding environment, thereby improving the detection accuracy.

[0006] The technical effects to be achieved by this application are achieved through the following solutions:

[0007] According to the first aspect of the present application, there is provided a display glass warping detection device, comprising a detection platform and a probe matrix, wherein a driving platform is arranged below the detection platform, and a plurality of driving rollers arranged in parallel are arranged on the driving platform, and through slots corresponding to the driving rollers are opened on the detection platform, and the driving platform is driven by a lifting mechanism to extend or retract the driving rollers into the through slots; the probe matrix comprises a clamping frame and a plurality of probes arranged in a matrix, and the probes are all vertically slidably connected to the clamping frame, and the probes are all connected to position sensors, and the clamping frame drives the probes to approach or move away from the display glass to be detected.

[0008] Through this solution, the detection table is fixed to the corresponding detection position on the display glass conveyor line, so that the driving roller is exposed to the surface of the detection table. When the display glass needs to be tested after it is received, the transportation is stopped and the driving table is lowered, and the display glass directly and stably falls onto the detection table for testing, without the need for handling or transfer, thereby improving the detection efficiency; after the probe matrix is ​​pressed onto the display glass, the corresponding probe height can be changed according to the warping of the display glass, and then converted into an electrical signal by the position sensor for output; direct contact detection greatly improves reliability and will not be affected by the surrounding temperature and humidity to cause accuracy errors.

[0009] Preferably, the lifting mechanism comprises a lifting seat, a lifting cylinder and a polished rod, the bottom of the lifting cylinder is connected to the lifting seat and the top is connected to the bottom of the driving platform, the polished rod is vertically fixed to the bottom of the driving platform, and the polished rod is slidably connected to the bottom of the lifting seat.

[0010] Through this solution, the lifting cylinder drives the driving platform to rise and fall, and the light rod can improve the stability during the lifting process to avoid bumping the display glass caused by shaking.

[0011] Preferably, the lifting seat is a U-shaped structure, and the driving platform is slidably connected to the lifting seat.

[0012] Through this solution, the stability during the lifting process is further improved, and the influence of the tilt of the driving platform on the detection and conveying accuracy can be avoided.

[0013] Preferably, the driving platform comprises a mounting frame, the driving roller is rotatably connected to the mounting frame, a driving motor is disposed at the bottom of the mounting frame, and the driving motor drives the driving roller to rotate via a chain.

[0014] Through this solution, the driving rollers are also connected through chain drive, which improves the driving effect and avoids material jamming.

[0015] Preferably, the clamping frame comprises a frame body, a detection plate and a clamping cylinder, the detection plate is vertically slidably connected to the frame body, the clamping cylinder drives the detection plate to move vertically, and the probe is vertically slidably connected to the detection plate.

[0016] Through this solution, the clamping cylinder pushes the detection plate downward or upward, thereby driving all the probes to move and to be pressed against the display glass surface to ensure synchronization of operation.

[0017] Preferably, a stabilizing frame is connected to the detection plate, the pressing cylinder is connected to the stabilizing frame, a plurality of stabilizing rods are arranged on the stabilizing frame, and the stabilizing rods are slidably connected to the pressing frame.

[0018] Through this solution, the stabilizing frame can stabilize the horizontality of the detection plate and avoid measurement errors caused by tilting.

[0019] Preferably, a nylon head is provided at the bottom of the probe, and the nylon head is an inverted conical structure.

[0020] Through this solution, the nylon head can reduce friction damage with the display glass, and the conical structure can reduce the contact area with the display glass, so that smaller defects such as pits can be detected.

[0021] Preferably, the position sensor is fixed to the detection plate, a detection ring is fixed to the probe, and the detection ring is electrically connected to the position sensor.

[0022] Through this solution, the detection plate position sensor moves with the detection plate and is only used to detect the height change of the probe, so as to compare with other probes to obtain the current position height of the probe; the electrical connection can convert the position signal into an electrical signal to reduce the influence of humidity, etc.

[0023] Preferably, the position sensor comprises two separately arranged detection blocks, conductive parts are provided at both ends of the detection ring, the conductive parts are electrically connected to the two detection blocks respectively, and the current position is calculated by detecting the resistance between the tops of the two detection blocks.

[0024] Through this solution, a sliding resistor is formed between the detection ring and the detection block, and the current height of the probe is known by measuring the change in resistance; the two detection blocks can increase the rate of change of resistance, thereby improving the detection accuracy.

[0025] Preferably, the probe is slidably connected to a through hole of the detection board, the detection block is mounted on both sides of the through hole and is arranged through the through hole, the detection block is provided with a vertically arranged groove, and the conductive part is slidably connected to the groove.

[0026] Through this solution, the installation firmness of the detection block is improved, thereby improving the conductive effect with the detection ring; the groove can limit the angle of the probe to avoid rotation out of contact with the detection block.

[0027] According to an embodiment of the present application, the beneficial effect of using the display glass warpage detection device is that it can be directly installed on the conveyor line, and the display glass is placed on the detection table for detection after it arrives, and is directly lifted and removed after the detection is completed, which not only improves the detection efficiency without the need for transfer, but also avoids bumps caused by frequent transfers;

[0028] The use of contact-type warpage measurement can improve the anti-interference performance of the detection and avoid errors in detection accuracy caused by changes in temperature and humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the existing technical solutions, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 This is a schematic diagram of the structure of a device for detecting the warpage of display glass in one embodiment of the present application;

[0031] Figure 2 for Figure 1 The structure schematic diagram of the detection platform in the glass warpage detection device is shown in FIG.

[0032] Figure 3 for Figure 2 Schematic diagram of the position structure of the test platform during the test process;

[0033] Figure 4 for Figure 3 Schematic diagram of the structure of the middle drive platform;

[0034] Figure 5 for Figure 1 Structural diagram of the middle clamping frame;

[0035] Figure 6 for Figure 5 A schematic diagram of the top view of the structure of the middle detection board;

[0036] Figure 7 for Figure 5 Schematic diagram of the bottom structure of the middle probe;

[0037] Figure 8 for Figure 5 Schematic diagram of the structure of the probe and position sensor;

[0038] Fig. 9 for Figure 8 Schematic diagram of the top view structure of the position sensor. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0040] like Figures 1 to 9As shown, a display glass warpage detection device in an embodiment of the present application includes a detection platform 100 and a probe matrix 500, a driving platform 200 is arranged below the detection platform 100, a plurality of parallel arranged driving rollers 210 are arranged on the driving platform 200, a through slot 110 corresponding to the driving roller 210 is opened on the detection platform 100, the driving platform 200 is driven by a lifting mechanism to extend or retract the driving roller 210 into the through slot 110; the probe matrix 500 includes a clamping frame 400 and a plurality of matrix-arranged probes 510, the probes 510 are vertically slidably connected to the clamping frame 400, the probes 510 are connected to position sensors 520, and the clamping frame 400 drives the probes 510 to approach or move away from the display glass to be detected.

[0041] Through the scheme of this embodiment, the detection platform 100 is fixed to the corresponding detection position on the display glass conveyor line, so that the driving roller 210 is exposed from the surface of the detection platform 100. When the display glass needs to be tested after it is received, the conveying is stopped and the driving platform 200 is lowered, and the display glass directly and stably falls onto the detection platform 100 for testing, without the need for handling or transfer, thereby improving the detection efficiency; after the probe matrix 500 is pressed onto the display glass, the height of the corresponding probe 510 can be changed according to the warping of the display glass, and then converted into an electrical signal by the position sensor 520 for output; direct contact detection greatly improves reliability and will not be affected by the surrounding temperature and humidity to cause accuracy errors.

[0042] In one embodiment of the present application, the lifting mechanism includes a lifting seat 310, a lifting cylinder 320, and a polished rod 330. The bottom of the lifting cylinder 320 is connected to the lifting seat 310 and the top is connected to the bottom of the driving platform 200. The polished rod 330 is vertically fixed to the bottom of the driving platform 200, and the polished rod 330 is slidably connected to the bottom of the lifting seat 310. The lifting cylinder 320 drives the driving platform 200 to rise and fall, and the polished rod 330 can improve the stability during the lifting process to avoid bumping the display glass caused by shaking.

[0043] In one embodiment of the present application, the lifting seat 310 is a U-shaped structure, and the driving platform 200 is slidably connected to the lifting seat 310. This further improves the stability during the lifting process and can prevent the driving platform 200 from tilting and affecting the detection and conveying accuracy.

[0044] The test platform 100 is fixed to the lifting seat 310 to form a whole to improve stability. The driving platform 200 slides up and down in it. The test platform 100 is made of nylon. The use of a softer material can avoid bumping and damaging the display glass.

[0045] In one embodiment of the present application, the driving platform 200 includes a mounting frame 201, a driving roller 210 is rotatably connected to the mounting frame 201, a driving motor 220 is disposed at the bottom of the mounting frame 201, and the driving motor 220 drives the driving roller 210 to rotate through a chain 230. The driving rollers 210 are also connected by the chain 230 to improve the driving effect and avoid material jamming.

[0046] In one embodiment of the present application, the lifting cylinder 320 is connected to the driving platform 200 directly below the center of gravity, thereby improving the stability of the driving platform 200 and the service life of the lifting cylinder 320, and avoiding the influence of the driving effect caused by the center of gravity offset caused by the setting of the driving motor 220.

[0047] In one embodiment of the present application, a rubber pad is laid on the test platform 100. The rubber pad can not only play a buffering role to reduce damage to the display glass during landing, but also increase the friction with the test platform 100 to reduce its position movement caused by inertia during transportation.

[0048] In one embodiment of the present application, the pressing frame 400 includes a frame body 410, a detection plate 420 and a pressing cylinder 430. The detection plate 420 is vertically slidably connected to the frame body 410. The pressing cylinder 430 drives the detection plate 420 to move vertically. The probe 510 is vertically slidably connected to the detection plate 420. The pressing cylinder 430 drives the detection plate 420 to move downward or upward, thereby driving all the probes 510 to move, so as to be pressed against the display glass surface to ensure the synchronization of operation.

[0049] In one embodiment of the present application, a stabilizing frame 431 is connected to the detection plate 420, the pressing cylinder 430 is connected to the stabilizing frame 431, a plurality of stabilizing rods 432 are provided on the stabilizing frame 431, and the stabilizing rods 432 are slidably connected to the pressing frame 400. The stabilizing frame 431 can stabilize the horizontality of the detection plate 420 to avoid measurement errors caused by tilting.

[0050] In one embodiment of the present application, a nylon head 511 is provided at the bottom of the probe 510, and the nylon head 511 is an inverted conical structure. The nylon head 511 can reduce friction damage between the probe and the display glass, and the conical structure can reduce the contact area with the display glass, so that smaller defects such as pits can be detected.

[0051] In one embodiment of the present application, the position sensor 520 is fixed to the detection board 420, and a detection ring 512 is fixed to the probe 510, and the detection ring 512 is electrically connected to the position sensor 520. The detection board 420 position sensor 520 moves with the detection board 420, and is only used to detect the height change of the probe 510, so as to compare with other probes 510 to obtain the current position height of the probe 510; the electrical connection can convert the position signal into an electrical signal to reduce the influence of humidity, etc.

[0052] In one embodiment of the present application, the position sensor 520 includes two detection blocks 521 arranged separately, and conductive parts are provided at both ends of the detection ring 512, and the conductive parts are electrically connected to the two detection blocks 521 respectively, and the current position is calculated by detecting the resistance between the tops of the two detection blocks 521. A sliding rheostat is formed between the detection ring 512 and the detection block 521, and the current height of the probe 510 is known by measuring the change in resistance; the two detection blocks 521 can increase the change rate of resistance, thereby improving the detection accuracy.

[0053] In one embodiment of the present application, the probe 510 is slidably connected to the through hole of the detection plate 420, the detection block 521 is installed on both sides of the through hole and is arranged through the through hole, and the detection block 521 is provided with a vertically arranged groove, and the conductive part is slidably connected to the groove. The installation firmness of the detection block 521 is improved, thereby improving the conductive effect with the detection ring 512; the groove can limit the angle of the probe 510 to prevent rotation from being out of contact with the detection block 521.

[0054] The above embodiment also includes a processing device, which can collect the height data of each probe in real time, summarize the height data, and calculate the curvature of the current display glass.

[0055] According to an embodiment of the present application, the beneficial effect of using the display glass warpage detection device is that it can be directly installed on the conveyor line, and the display glass is placed on the detection table for detection after it arrives, and is directly lifted and removed after the detection is completed, which not only improves the detection efficiency without the need for transfer, but also avoids bumps caused by frequent transfers;

[0056] The use of contact-type warpage measurement can improve the anti-interference performance of the detection and avoid errors in detection accuracy caused by changes in temperature and humidity.

[0057] It should be noted that the above detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0059] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0060] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0061] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0062] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A display glass warpage detection device, characterized in that: It includes a detection platform and a probe matrix, wherein a driving platform is arranged below the detection platform, and a plurality of driving rollers arranged in parallel are arranged on the driving platform. Passing slots corresponding to the driving rollers are opened on the detection platform, and the driving platform is driven by a lifting mechanism to extend or retract the driving rollers into the passing slots; the probe matrix includes a clamping frame and a plurality of probes arranged in a matrix, and the probes are vertically slidably connected to the clamping frame, and the probes are connected to position sensors, and the clamping frame drives the probes to approach or move away from the display glass to be detected.

2. The display glass warpage detection device according to claim 1, characterized in that: The lifting mechanism includes a lifting seat, a lifting cylinder and a polished rod. The bottom of the lifting cylinder is connected to the lifting seat and the top is connected to the bottom of the driving platform. The polished rod is vertically fixed to the bottom of the driving platform, and the polished rod is slidably connected to the bottom of the lifting seat.

3. The display glass warpage detection device according to claim 2, characterized in that: The lifting seat is a U-shaped structure, and the driving platform is slidably connected to the lifting seat.

4. The display glass warpage detection device according to claim 2, characterized in that: The driving platform comprises a mounting frame, the driving roller is rotatably connected to the mounting frame, a driving motor is arranged at the bottom of the mounting frame, and the driving motor drives the driving roller to rotate through a chain.

5. The display glass warpage detection device according to claim 1, characterized in that: The clamping frame includes a frame body, a detection plate and a clamping cylinder. The detection plate is vertically slidably connected to the frame body, the clamping cylinder drives the detection plate to move vertically, and the probe is vertically slidably connected to the detection plate.

6. The display glass warpage detection device according to claim 5, characterized in that: The detection plate is connected to a stabilizing frame, the pressing cylinder is connected to the stabilizing frame, a plurality of stabilizing rods are arranged on the stabilizing frame, and the stabilizing rods are slidably connected to the pressing frame.

7. The display glass warpage detection device according to claim 5, characterized in that: A nylon head is arranged at the bottom of the probe, and the nylon head is an inverted cone structure.

8. The display glass warpage detection device according to claim 5, characterized in that: The position sensor is fixed to the detection plate, a detection ring is fixed on the probe, and the detection ring is electrically connected to the position sensor.

9. The display glass warpage detection device according to claim 8, characterized in that: The position sensor comprises two separately arranged detection blocks, and conductive parts are provided at both ends of the detection ring. The conductive parts are electrically connected to the two detection blocks respectively, and the current position is calculated by detecting the resistance between the tops of the two detection blocks.

10. The display glass warpage detection device according to claim 9, characterized in that: The probe is slidably connected to a through hole of the detection board, the detection block is installed on both sides of the through hole and is arranged through the through hole, the detection block is provided with a vertically arranged groove, and the conductive part is slidably connected to the groove.

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