A substrate glass stripe quality control device and method

Abstract

The present invention discloses a substrate glass stripe quality control device and method, which belongs to the technical field of substrate glass quality evaluation and display industry quality evaluation. It includes a light source, a transmission twisting device and a light intensity testing device; the light intensity testing device includes a screen and a plurality of light sensors arranged thereon; the transmission twisting device includes a conveyor belt and a clamping vehicle moving on the upper surface of the conveyor belt, and the lower part of the conveyor belt is provided with a twisting mechanism for driving it to undergo twisting movement, and the twisting mechanism is connected to a controller, and the controller is used to receive a signal from the light sensor and control the twisting angle of the twisting mechanism; the clamping vehicle is used to clamp the substrate glass to be tested; the clamping vehicle is located between the screen and the light source. The present invention realizes fully automated determination of substrate glass stripe quality, effectively improves control efficiency and control accuracy, and reduces the risk of missed inspection and over-inspection during production.

Description

Technical Field

[0001] The present invention belongs to the technical field of substrate glass quality evaluation and display industry quality evaluation, and relates to a substrate glass stripe quality control device and method. Background Art

[0002] In the production process of substrate glass, in order to ensure that the substrate glass meets the user's requirements, it is necessary to control the stripe quality of the substrate glass. Since the quality of the stripes directly affects the use of the substrate glass at the user end, missed detection will lead to product scrapping, resulting in customer complaints or the risk of suspension of production at the user end. Therefore, effective control of stripe defects in the production process of substrate glass is crucial. There are many factors affecting the quality of image stripes, such as uneven mixing and ingredient problems. In the production process of substrate glass, in order to accurately evaluate the stripe quality of the product, the substrate glass is sampled and inspected, and the quality of the substrate glass is tested for changes in the production process. However, sudden changes in the actual production process lead to missed detection of stripe anomalies, and defective products flow to users, resulting in customer complaints. At the same time, the traceability of production line defects has a more serious impact on the continuity and stability of production. In the prior art, the xenon lamp projection method is usually used to detect stripes. The glass plate sample to be tested is placed between the xenon lamp and the curtain, and the projection of the glass on the curtain is observed to perform stripe inspection on the glass sample. In order to solve the problem of defective products with streaks being delivered to customers, we investigated the pattern of streaks and found that streaks occur in batches and continuously in a short period of time, and the streaks change from weak to strong and then from strong to weak. In addition, considering the impact of streaks on quality, it is necessary to control defects in the 0-45° range, but existing technologies cannot control glass within a certain angle range. Summary of the invention

[0003] The purpose of the present invention is to solve the technical problem that the prior art cannot control glass within a certain angle range, and to provide a substrate glass stripe quality control device and method.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention provides a substrate glass stripe quality control device, comprising a light source, a transmission twisting device and a light intensity testing device; the light intensity testing device comprises a screen and a plurality of light sensors arranged thereon; the transmission twisting device comprises a conveyor belt and a clamping vehicle moving on the upper surface of the conveyor belt, a twisting mechanism for driving the conveyor belt to undergo twisting motion is arranged at the lower part of the conveyor belt, the twisting mechanism is connected to a controller, the controller is used to receive a signal from the light sensor and control the twisting angle of the twisting mechanism; the clamping vehicle is used to clamp the substrate glass to be tested; the clamping vehicle is located between the screen and the light source.

[0006] A further improvement of the present invention is:

[0007] The torsion mechanism includes a cylinder, the cylinder is connected to a first coaxial conversion device, the first coaxial conversion device is slidably connected to a second coaxial conversion device, the second coaxial conversion device is slidably connected to an angle operation device, and the angle operation device is fixedly connected to the transmission belt; the cylinder is connected to a controller.

[0008] The clamping vehicle is provided with a side clamping mechanism for clamping the substrate glass to be tested.

[0009] The light source is a 1000W xenon lamp.

[0010] The plurality of light sensors are arranged in a 3000 mm linear arrangement.

[0011] The controller pre-sets the light signal range to be A~B; when the light signal output by the light sensor exceeds the range of A~B, the controller controls the cylinder to start moving, driving the conveyor belt to rotate.

[0012] The controller is pre-set with an angle value corresponding to the light signal output by the light sensor; and the controller is pre-set with a standard angle value.

[0013] The rotation angle range of the conveyor belt is 0-45°.

[0014] The standard angle value is 0~60°.

[0015] In a second aspect, the present invention provides a method for controlling the quality of glass stripes on a substrate using the above device, comprising the following steps:

[0016] Step 1: The substrate glass to be tested is clamped by a clamping vehicle and moves on a conveyor belt to a stripe detection area; the light of a xenon lamp is irradiated on the substrate glass to be tested and projected onto a screen, and a light sensor calculates a light signal value and transmits it to a controller;

[0017] Step 2: When the optical signal value is within the preset optical signal range in the controller, the controller outputs OK, the cylinder does not work, and waits for the next substrate glass to be tested to move to the stripe detection area, and repeats step 1; when the optical signal value exceeds the preset optical signal range in the controller, the controller outputs NG and continues to receive the optical signal value, the cylinder starts to move, and the conveyor belt starts to rotate;

[0018] Step three, the controller calculates the angle value corresponding to the light signal value; when the angle value is greater than the standard angle value, the controller outputs OK, waits for the next substrate glass to be tested to move to the stripe detection area, and repeats step one; when the angle value is less than or equal to the standard angle value, the controller outputs NG and the angle value.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention discloses a substrate glass stripe quality control device. By setting a controller and a twisting device at the bottom of a conveyor belt, the controller makes a judgment after receiving a light signal value range, and then controls the twisting mechanism to drive the conveyor belt to rotate, and then constantly receives and judges the light signal value output by a light sensor to judge whether the quality of the substrate glass is qualified, thereby realizing fully automated judgment of the substrate glass stripe quality, effectively improving the control efficiency and accuracy, reducing the risk of missed inspection and over-inspection in the production process, achieving precise management of stripe control, and improving the controllable ability of substrate glass quality, as well as the controllability, stability and continuity of the production process.

[0021] Furthermore, the rotation angle of the conveyor belt is 0~45°, which can be used to specifically control the angle range where defects are more likely to occur, making it more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of a glass stripe quality control device in the present invention;

[0024] Figure 2 A schematic diagram of a transmission and twisting device of a glass stripe quality control device in the present invention;

[0025] Figure 3 A schematic diagram of a torsion mechanism of a glass stripe quality control device in the present invention;

[0026] Figure 4 The figure is a flow chart of a glass stripe quality control method in the present invention.

[0027] Among them: 1-light source; 2-curtain; 3-light sensor; 4-substrate glass to be tested; 5-transmission belt; 6-clamping vehicle; 7-twisting mechanism; 8-side clamping mechanism; 701-cylinder; 702-first coaxial conversion device; 703-second coaxial conversion device; 704-angle operation device. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0035] See also Figure 1 and Figure 2 , an embodiment of the present invention discloses a substrate glass stripe quality control device, including a light source 1, a transmission and torsion device, and a light intensity test device; the light intensity test device includes a curtain 2 and a plurality of light sensors 3 arranged thereon; the transmission and torsion device includes a conveyor belt 5 and a clamping vehicle 6 moving on the upper surface of the conveyor belt 5. As Figure 3 shown, a torsion mechanism 7 for driving the conveyor belt 5 to perform a torsion movement is provided below the conveyor belt 5. The torsion mechanism 7 includes a cylinder 701, the cylinder 701 is connected to a first coaxial conversion device 702, the first coaxial conversion device 702 is slidably connected to a second coaxial conversion device 703, the second coaxial conversion device 703 is slidably connected to an angular operation device 704, and the angular operation device 704 is fixedly connected to the conveyor belt 5; the cylinder 701 is connected to a controller. The torsion mechanism 7 is connected to a controller, and the controller is used to receive signals from the light sensors 3 and control the torsion angle of the torsion mechanism 7; the clamping vehicle 6 is used to clamp the substrate glass to be tested, and a side clamping mechanism 8 is further provided on the clamping vehicle 6; the clamping vehicle 6 is located between the curtain 2 and the light source 1. The light source 1 is a 1000 w xenon lamp. The plurality of light sensors 3 are arranged in a 3000 mm linear arrangement. The controller is pre-set with a light signal range of A~B; when the light signal output by the light sensor 3 exceeds the range of A~B, the controller controls the cylinder 701 to start moving and drives the conveyor belt 5 to rotate. The controller is pre-set with the angle value corresponding to the light signal output by the light sensor 3; the controller is pre-set with a standard angle value. The rotation angle range of the conveyor belt 5 is 0~45°. The standard angle value is 0~60°.

[0036] The working principle of the controller is: when the light signal > A, or the light signal < B, the torsion device performs an angular rotation, and the rotation angle is continuously output one-to-one with the light signal; when B < the light signal < A, the torsion device does not act;

[0037] When the light signal value > A or the light signal < B, the product signal is assigned: the angle value corresponding to max(light signal), NG product; when B < the light signal < A, the product signal is assigned: invisible, OK product.

[0038] An embodiment of the present invention discloses a substrate glass stripe quality control method, including the following steps:

[0039] Step 1, the substrate glass 4 to be tested is clamped by the clamping vehicle 6 and moves on the conveyor belt 5 to the stripe detection area; the light of the xenon lamp irradiates on the substrate glass 4 to be tested and projects on the curtain 2, and the light sensor 3 calculates the light signal value and transmits it to the controller;

[0040] Step 2: When the optical signal value is within the preset optical signal range in the controller, the controller outputs OK, the cylinder 701 does not work, and waits for the next substrate glass to be tested to move to the stripe detection area, and repeats step 1; when the optical signal value exceeds the preset optical signal range in the controller, the controller outputs NG and continues to receive the optical signal value, the cylinder 701 starts to move, and the conveyor belt 5 starts to rotate;

[0041] Step three, the controller calculates the angle value corresponding to the light signal value; when the angle value is greater than the standard angle value, the controller outputs OK, waits for the next substrate glass to be tested to move to the stripe detection area, and repeats step one; when the angle value is less than or equal to the standard angle value, the controller outputs NG and the angle value.

[0042] See also Figure 4 The specific process of a substrate glass stripe quality control method disclosed in an embodiment of the present invention is as follows:

[0043] S1: In the production of substrate glass, the conveyor belt 5 transports the glass to the stripe detection area;

[0044] S2: The xenon lamp irradiates the substrate glass and projects it onto the screen 2, and the light sensor 3 in the screen 2 outputs a light signal value;

[0045] S3: After the controller receives the light signal value, it makes a judgment. If the S2 light signal value is between the A value and the B value, it jumps to S4 and continues to detect the next substrate glass; otherwise, it jumps to S6;

[0046] S4: Output OK, jump to S5;

[0047] S5: Wait for the next substrate glass to be detected and jump to S1;

[0048] S6: The controller starts, the detection device rotates, and continuously outputs angle-light signal data;

[0049] S7: The system calculates the angle value corresponding to MAX (light signal);

[0050] S8: If the angle value is greater than the specification value, jump to S4; otherwise, jump to S9;

[0051] S9: Output NG, S7 angle value.

[0052] The present invention discloses a substrate glass stripe quality control method, which realizes fully automated determination of substrate glass stripe quality, effectively improves control efficiency and control accuracy, reduces the risk of missed inspection and over-inspection in the production process, realizes precise management of stripe control, and improves the controllability of substrate glass quality, as well as the controllability, stability and continuity of the production process.

[0053] 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 substrate glass stripe quality control device, characterized in that: The invention comprises a light source (1), a transmission twisting device and a light intensity testing device; the light intensity testing device comprises a curtain (2) and a plurality of light sensors (3) arranged thereon; the transmission twisting device comprises a transmission belt (5) and a clamping vehicle (6) moving on the upper surface of the transmission belt (5); a twisting mechanism (7) for driving the transmission belt (5) to undergo twisting movement is arranged at the lower part of the transmission belt (5); the twisting mechanism (7) is connected to a controller, and the controller is used to receive signals from the light sensors (3) and control the twisting angle of the twisting mechanism (7); the clamping vehicle (6) ) is used to clamp the substrate glass to be tested; the clamping vehicle (6) is located between the curtain (2) and the light source (1); the torsion mechanism (7) comprises a cylinder (701), the cylinder (701) is connected to a first coaxial conversion device (702), the first coaxial conversion device (702) is slidably connected to a second coaxial conversion device (703), the second coaxial conversion device (703) is slidably connected to an angle operation device (704), and the angle operation device (704) is fixedly connected to the conveyor belt (5); the cylinder (701) is connected to a controller; The controller pre-sets a light signal range of A to B; when the light signal output by the light sensor (3) exceeds the range of A to B, the controller controls the cylinder (701) to start moving, thereby driving the conveyor belt (5) to rotate; the controller pre-sets an angle value corresponding to the light signal output by the light sensor (3); the controller pre-sets a standard angle value; the rotation angle range of the conveyor belt (5) is 0 to 45°; and the standard angle value is 0 to 60°.

2. The substrate glass stripe quality control device according to claim 1, characterized in that: The clamping vehicle (6) is provided with a side clamping mechanism (8) for clamping the substrate glass to be tested.

3. The substrate glass stripe quality control device according to claim 1, characterized in that: The light source (1) is a 1000W xenon lamp.

4. The substrate glass stripe quality control device according to claim 1, characterized in that: The plurality of light sensing sensors (3) are arranged in a 3000 mm linear arrangement.

5. A method for controlling the quality of substrate glass stripes using the device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: The substrate glass (4) to be tested is clamped by a clamping vehicle (6) and moves on a conveyor belt (5) to a stripe detection area; light from a xenon lamp is irradiated on the substrate glass (4) to be tested and projected onto a screen (2); a light sensor (3) calculates a light signal value and transmits it to a controller; Step 2: when the optical signal value is within the optical signal range preset in the controller, the controller outputs OK, the cylinder (701) does not work, and waits for the next substrate glass to be tested to move to the stripe detection area, and repeats step 1; when the optical signal value exceeds the optical signal range preset in the controller, the controller outputs NG and continues to receive the optical signal value, the cylinder (701) starts to move, and the conveyor belt (5) starts to rotate; Step 3, the controller calculates the angle value corresponding to the light signal value; when the angle value is greater than the standard angle value, the controller outputs OK, waits for the next substrate glass to be tested to move to the stripe to be tested area, and repeats step 1; When the angle value is less than or equal to the standard angle value, the controller outputs NG and the angle value.

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