Point light source detection device and float glass production line

Abstract

This utility model belongs to the field of float glass testing technology, and particularly relates to a point light source testing device and a float glass production line. The point light source testing device includes: a light-emitting structure comprising a support, a light source housing connected to the support and having a receiving cavity, and a light source component disposed within the receiving cavity; the light source housing has a light-transmitting hole communicating with the receiving cavity; the light-emitting surface of the light source component is positioned opposite the light-transmitting hole; a support structure, spaced apart from the support and used to support a glass plate; and a back plate structure, positioned opposite the glass plate; the glass plate is located between the light-emitting structure and the back plate structure; the light source component projects light towards the light-transmitting hole, and the light passes through the light-transmitting hole and enters the glass plate, so that the glass plate is projected onto the back plate structure. This utility model has a simple structure and low cost, avoiding the problems of probe wear and high cost associated with surface morphology instruments, thus improving the efficiency and economy of float glass testing.

Description

Technical Field

[0001] This utility model belongs to the field of float glass testing technology, and particularly relates to a point light source testing device and a float glass production line. Background Technology

[0002] In the production process of float glass, the purpose of micro-waviness testing is to identify micro-unevennesses on the glass surface as much as possible. Their formation is often closely related to processes such as striations, molten tin convection during the forming stage, and disturbances; these factors directly affect the surface smoothness of the glass.

[0003] Streaks, deformation defects, and optical distortion are common defects that cause uneven glass surfaces, reduced transparency, and optical distortion, and in severe cases, can even affect the use of the product. These defects typically appear as strip-shaped substances with properties similar to glass, irregular in shape, and with blurred boundaries.

[0004] In existing technologies, the waviness detection of ultrathin float glass plates typically relies on surface topography instruments, which measure local surface undulations using a micrometer-scale probe trajectory. However, the probes used in this method are expensive, wear out quickly, and have short lifespans, resulting in high detection costs. Utility Model Content

[0005] The purpose of this application is to provide a point light source detection device, which aims to solve the problem of how to inspect glass plates and reduce costs.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, a point light source detection device is provided for detecting a glass plate, the point light source detection device comprising: A light-emitting structure includes a support, a light source housing connected to the support and having a receiving cavity, and a light source assembly disposed in the receiving cavity. The light source housing has a light-transmitting hole that communicates with the receiving cavity, and the light-emitting surface of the light source assembly is disposed opposite to the light-transmitting hole. A support structure, spaced apart from the bracket and used to support the glass plate; and A backplate structure is disposed opposite to the glass plate; The glass plate is located between the light-emitting structure and the back plate structure. The light source assembly projects light towards the light-transmitting hole. The light passes through the light-transmitting hole and enters the glass plate, so that the glass plate projects onto the back plate structure.

[0007] In some embodiments, the light source assembly includes conductive elements and a light-emitting lamp, with two conductive elements arranged and each of the two conductive elements connected to two electrodes of the light-emitting lamp.

[0008] In some embodiments, the conductive element includes an insulating porcelain bottle and an electrical contact piece made of conductive material connected to the insulating porcelain bottle, wherein the two electrical contacts are respectively electrically connected to the two electrodes of the light-emitting lamp.

[0009] In some embodiments, the electrical contact includes a first electrical contact plate, a second electrical contact plate spaced apart from the first electrical contact plate, and a third electrical contact plate with its two ends respectively connected to the first electrical contact plate and the second electrical contact plate. The first electrical contact plate is connected to the insulating porcelain bottle, and the second electrical contact plate is connected to the electrode of the light-emitting lamp.

[0010] In some embodiments, the third electrical contact plate is made of an elastic material, and the two ends of the third electrical contact plate are brought together to form an arc shape.

[0011] In some embodiments, the light source is a xenon lamp.

[0012] In some embodiments, the light-emitting structure further includes a cooling fan, the light source housing has an air outlet that communicates with the accommodating cavity, the air outlet is disposed opposite to the light-transmitting hole, and the cooling fan is connected to the light source housing at the air outlet.

[0013] In some embodiments, the support structure includes a support plate for placing the glass plate, a positioning clamp disposed on the support plate, and a support column connected to the support plate. The positioning clamp is used to position the glass plate, and the surface of the glass plate has an angle with the direction of light propagation, the angle being in the range of 30 to 45 degrees.

[0014] In some embodiments, the positioning fixture includes a clamping plate slidably disposed on the support plate and a driving mechanism for driving the clamping plate. Two clamping plates are arranged, and the driving mechanism drives the two clamping plates to clamp the glass plate.

[0015] Secondly, a float glass production line is provided, which includes the point light source detection device.

[0016] The beneficial effects of this application are as follows: the light-emitting structure provides directional light projection, and the supporting structure provides stable support for the glass plate, so that the light can shine on the glass plate and the back plate structure receives the projection of the glass plate. Then, the inspector can realize the transmission optical detection of the micro-roughness and stripe glass defects of the glass plate through human eyes. At the same time, the point light source detection device has a simple structure and low cost, which can avoid the problems of probe wear and high cost of surface morphology instrument, and improve the efficiency and economy of float glass inspection. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the point light source detection device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the light-emitting structure provided in another embodiment of this application; Figure 3 yes Figure 2 A magnified view of a portion at point A; Figure 4 This is a schematic diagram of the light-emitting structure provided in another embodiment of this application; Figure 5 This is a schematic diagram of the light-emitting structure provided in another embodiment of this application; Figure 6 This is a schematic diagram of the principle of the glass plate and positioning fixture provided in another embodiment of this application; Figure 7 This is a schematic diagram of the principle of the tin bath and edge-pulling machine provided in another embodiment of this application.

[0019] The following are the labeling elements in the figure: 100. Point light source detection device; 200. Light-emitting structure; 201. Light source assembly; 202. Support; 203. Light source housing; 231. Receiving cavity; 232. Light-transmitting hole; 214. Conductive component; 212. Electrical contact; 213. Light-emitting lamp; 230. Air switch; 240. Rectifier; 250. Cooling fan; 102. Power cord; 211. Insulating porcelain insulator; 101. Glass plate; 300. Support structure; 301. Support column; 302. Support plate; 2121. First electrical connection plate; 2122. Second electrical connection plate; 2123. Third electrical connection plate; 400. Back plate structure. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of this application.

[0021] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are for ease of description only, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0022] Please see Figures 1 to 3 This application provides a point light source detection device 100, which is used to detect glass plates 101 produced by a float glass production line.

[0023] Please see Figures 1 to 3 The point light source detection device 100 includes a light-emitting structure 200, a support structure 300, and a back plate structure 400.

[0024] Please see Figures 2 to 4 The light-emitting structure 200 includes a support 202, a light source housing 203 connected to the support 202 and having a receiving cavity 231, and a light source assembly 201 disposed in the receiving cavity 231. The light source housing 203 has a light-transmitting hole 232, which communicates with the receiving cavity 231. The light-emitting surface of the light source assembly 201 is positioned opposite the light-transmitting hole 232. The light emitted by the light source assembly 201 can exit through the light-transmitting hole 232. The light source housing 203 can fix the light source assembly 201 and provide protection for it. The support 202 can ensure that the emitted light from the light source assembly 201 has a certain height, so that the emitted light is suitable for the glass plate 101 to be tested.

[0025] Please see Figures 1 to 3 The support structure 300 is arranged at intervals with the bracket 202 and is used to support the glass plate 101. It can be understood that the support structure 300 can support the glass plate 101 along its height direction and maintain a certain distance from the bracket 202, so that the light emitted by the light source assembly 201 can illuminate the entire surface of the glass plate 101.

[0026] Please see Figures 1 to 3The back panel structure 400 is disposed opposite to the glass plate 101. It can be understood that the back panel structure 400 is generally plate-shaped and has an area for the projection of the glass plate 101. The color of this area has a certain color difference from the projection of the glass plate 101, allowing workers to visually detect defects in the projection of the glass plate 101. It can also be understood that a certain distance is maintained between the back panel structure 400 and the glass plate 101, so that the entire projection of the glass plate 101 can be displayed on the back panel structure 400.

[0027] Please see Figures 1 to 3 The glass plate 101 is located between the light-emitting structure 200 and the back plate structure 400. The light source assembly 201 projects light toward the light-transmitting hole 232. The light passes through the light-transmitting hole 232 and enters the glass plate 101, so that the glass plate 101 is projected onto the back plate structure 400.

[0028] The point light source detection device 100 provided in this embodiment provides directional light projection through the light-emitting structure 200 and provides stable support for the glass plate 101 through the support structure 300, so that the light can illuminate the glass plate 101 and the back plate structure 400 receives the projection of the glass plate 101. Then, the inspection personnel can realize the transmission optical detection of micro-roughness and stripe glass defects of the glass plate 101 through human eyes. At the same time, the point light source detection device 100 has a simple structure and low cost, which can avoid the problems of probe wear and high cost of surface morphology instrument, and improve the efficiency and economy of float glass inspection.

[0029] Please see Figures 1 to 3 In this embodiment, the distance between the light source component 201 and the glass plate 101 is 2~3m, such as 2m, 2.1m, 2.2m, 2.3m, 2.4m, 2.5m, 2.6m, 2.7m, 2.8m, 2.9m or 3.0m. There is no limitation here, and it can be selected according to the actual situation.

[0030] The distance between the glass plate 101 and the back panel structure 400 is 1~1.5m, such as 1m, 1.2m, 1.3m or 1.5m. There is no restriction here, and it can be selected according to the actual situation.

[0031] Please see Figures 1 to 3 In some embodiments, the light source assembly 201 includes a conductive element 214 and a light-emitting lamp 213. Two conductive elements 214 are arranged, and the two conductive elements 214 are respectively connected to the two electrodes of the light-emitting lamp 213.

[0032] Optionally, by electrically connecting the two conductive elements 214 to the two electrodes of the power supply, the power supply can provide a stable power supply to the light lamp 213, enabling the light lamp 213 to emit light efficiently, ensuring the uniformity and reliability of light projection, and avoiding detection interruptions caused by unstable electrical connections.

[0033] In this embodiment, two conductive elements 214 are arranged at intervals in the vertical direction, and the light lamp 213 is located between the two conductive elements 214. One conductive element 214 is connected to the bottom of the accommodating cavity 231, and the other conductive element 214 is connected to the bottom of the accommodating cavity 231, thereby achieving a compact structure, which is beneficial to the layout of the circuit and reduces the cost of the device.

[0034] Please see Figures 1 to 3 In some embodiments, the conductive element 214 includes an insulating porcelain bottle 211 and an electrical contact 212 made of conductive material connected to the insulating porcelain bottle 211, with the two electrical contacts 212 respectively electrically connected to the two electrodes of the light-emitting lamp 213.

[0035] Optionally, the insulating porcelain bottle 211 and the electrical contact piece 212 are used to achieve safe insulation and reliable conductivity, prevent the risk of high voltage electric shock, optimize the stability of the electrode contact of the light lamp 213, and avoid poor contact.

[0036] Please see Figures 1 to 3 In some embodiments, the electrical contact 212 includes a first electrical contact plate 2121, a second electrical contact plate 2122 spaced apart from the first electrical contact plate 2121, and a third electrical contact plate 2123 connected at both ends to the first electrical contact plate 2121 and the second electrical contact plate 2122, respectively. The first electrical contact plate 2121 is connected to the insulating porcelain bottle 211, and the second electrical contact plate 2122 is connected to the electrode of the light-emitting lamp 213.

[0037] Please see Figures 1 to 3 Optionally, the first electrical contact plate 2121 has a first conductive hole, and the second electrical contact plate 2122 has a second conductive hole. The insulating end of the insulating porcelain bottle 211 is inserted into the corresponding first conductive hole to support the electrical contact piece 212. The two electrodes of the light lamp 213 are respectively inserted into the two second conductive holes. The two second electrical contact plates 2122 are electrically connected to the two electrodes of the power supply through two power lines 102, thereby achieving a reliable electrical connection.

[0038] Please see Figures 1 to 3 The electrical contact 212 includes a first electrical contact plate 2121, a second electrical contact plate 2122 and a third electrical contact plate 2123, which realizes a multi-layer electrical connection structure, enhances the contact area and flexibility, avoids disconnection caused by deformation of a single layer plate, reduces the failure rate and lowers the replacement cost.

[0039] Optionally, the first electrical connection plate 2121, the second electrical connection plate 2122, and the third electrical connection plate 2123 can be integrally formed, and all of them are made of copper. Copper has extremely high conductivity, second only to silver and far superior to common metals such as aluminum and iron. It can transmit a large current in a relatively small cross-sectional area, thereby reducing energy loss. Copper has good thermal conductivity, which can effectively reduce the temperature rise generated when current passes through, and improve the safety and stability of the light source component 201. Copper has excellent ductility and plasticity, making it easy to process into conductors with fine wires or complex structures. At the same time, a dense copper oxide film can easily form on the surface of copper, which can prevent further oxidation to a certain extent and give it good corrosion resistance.

[0040] Please see Figures 1 to 3 In some embodiments, the third electrical contact plate 2123 is made of an elastic material, and the two ends of the third electrical contact plate 2123 are brought together and the third electrical contact plate 2123 is an arc-shaped plate.

[0041] Optionally, the cross-sectional shape of the electrical contact 212 is U-shaped, and the third electrical contact plate 2123 is made of thin copper sheet material, so that the two ends of the third electrical contact plate 2123 can push the first electrical contact plate 2121 and the second electrical contact plate 2122 respectively by their own elastic deformation, so as to achieve adaptive buffering and elastic recovery, compensate for displacement caused by vibration or thermal expansion, avoid loosening of the contact between the first electrical contact plate 2121 and the second electrical contact plate 2122, and improve the reliability and fatigue resistance of the electrical connection.

[0042] In some embodiments, the light source 213 is a xenon lamp.

[0043] Optionally, using a xenon lamp for the light source 213 can provide strong light transmission to enhance the contrast of defect projection and avoid the blurring caused by insufficient brightness of ordinary light sources. The brightness of xenon lamps is typically 2 to 3 times that of halogen lamps. The luminous flux of common xenon headlights is generally around 3000 to 3500 lumens, while that of halogen lamps of the same power is only about 1000 to 1500 lumens. In terms of color temperature, the color temperature of xenon lamps is generally between 4200K and 6000K, close to natural light or even slightly cool white light, which is more conducive to the projection of glass plate 101 and improves contrast. Most xenon lamps have a working power of about 35W, while ordinary halogen lamps require 55W to achieve similar illumination brightness, so xenon lamps have an energy consumption advantage. In terms of lifespan, the average lifespan of xenon lamps can reach more than 2000 hours, which is 3 to 5 times that of halogen lamps.

[0044] Understandably, by using a xenon lamp, the light source component 201 becomes a point light source, improving the accuracy of detection and reducing the cost of the device.

[0045] Please see Figures 3 to 5In some embodiments, the light-emitting structure 200 further includes a cooling fan 250, the light source housing 203 has an air outlet that communicates with the accommodating cavity 231, the air outlet is disposed opposite to the light-transmitting hole 232, and the cooling fan 250 is connected to the light source housing 203 at the air outlet.

[0046] Please see Figures 3 to 5 Optionally, the cooling fan 250 effectively cools the accommodating cavity 231, preventing overheating of the light source component 201 that could lead to performance degradation and shortened lifespan, and avoiding the impact of high temperatures on detection stability. It is understood that the cooling fan 250 can draw high-temperature gas from the accommodating cavity 231 through the air outlet, while low-temperature air flows into the accommodating cavity 231 through the light-transmitting hole 232 and directly to the light-emitting lamp 213. Through air convection, the temperature of the light-emitting lamp 213 is effectively reduced.

[0047] Optionally, the light-emitting structure 200 also includes an air switch 230 connected to the light source housing 203 and used to control the light lamp 213, and a rectifier 240 connected to the light source housing 203.

[0048] Please see Figures 1 to 3 In some embodiments, the support structure 300 includes a support plate 302 for placing the glass plate 101, a positioning clamp 107 disposed on the support plate 302, and a support column 301 connected to the support plate 302. The positioning clamp 107 is used to position the glass plate 101. The surface of the glass plate 101 has an angle with the direction of light propagation, and the angle ranges from 30 to 45 degrees.

[0049] Please see Figure 6 The glass plate 101 is arranged horizontally at an angle relative to the incident direction of the light, and the included angle is denoted as α. The value of the included angle can be 30 degrees, 35 degrees, 36 degrees, 38 degrees, 39 degrees, 40 degrees, 41 degrees, 42 degrees, 43 degrees, 44 degrees or 45 degrees. There is no restriction here, and it can be selected according to the actual situation.

[0050] Optionally, the glass plate 101 can be tilted and supported by the support plate 302, the positioning clamp 107 and the support column 301, so that light enters the glass plate 101 at a certain angle, thereby improving the projection clarity and magnifying the defects.

[0051] Please see Figure 6In some embodiments, the positioning fixture 107 includes two clamping plates 105 disposed on the support plate 302 and a driving mechanism 106 connected to the support plate 302. One clamping plate 105 is fixedly disposed, and the other clamping plate 105 is slidably disposed and connected to the driving mechanism 106. The driving mechanism 106 drives the corresponding clamping plate 105 to slide so that the two clamping plates 105 clamp the glass plate 101.

[0052] Optionally, the drive mechanism 106 includes a motor and a ball screw connected to the motor. The ball screw is also connected to a clamping plate 105 that is slidably disposed therein. The screw of the ball screw can drive the clamping plate 105 to slide toward another clamping plate 105, thereby realizing the automatic clamping of the glass plate 101 by the two clamping plates 105, ensuring positioning stability and quick loading and unloading, and avoiding displacement errors caused by manual fixing.

[0053] Please see Figures 2 to 4 In some embodiments, the shape of the light-transmitting hole 232 is circular, elliptical, or polygonal.

[0054] Optionally, in this embodiment, the shape of the light-transmitting hole 232 is circular. In other embodiments, the shape of the light-transmitting hole 232 can also be elliptical or polygonal. There is no limitation here, and it can be selected according to the actual situation.

[0055] Please see Figure 7 This utility model also proposes a float glass production line, which includes a point light source detection device 100. The specific structure of the point light source detection device 100 is as described in the above embodiments. Since this float glass production line adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0056] In some embodiments, the float glass production line further includes a tin bath 120 and a plurality of edge-pulling machines 110 connected to the tin bath 120. Molten glass flows into the tin bath 120 and is ultimately processed into glass sheets 101 by the edge-pulling machines 110.

[0057] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A point light source detecting device for detecting a glass sheet, characterized by, The point light source detection device includes: A light-emitting structure includes a support, a light source housing connected to the support and having a receiving cavity, and a light source assembly disposed in the receiving cavity. The light source housing has a light-transmitting hole that communicates with the receiving cavity, and the light-emitting surface of the light source assembly is disposed opposite to the light-transmitting hole. A support structure, spaced apart from the bracket and used to support the glass plate; and A backplate structure is disposed opposite to the glass plate; The glass plate is located between the light-emitting structure and the back plate structure. The light source assembly projects light towards the light-transmitting hole. The light passes through the light-transmitting hole and enters the glass plate, so that the glass plate projects onto the back plate structure.

2. The point light source detection device as described in claim 1, characterized in that: The light source assembly includes conductive elements and light-emitting lamps. Two conductive elements are arranged, and the two conductive elements are respectively connected to the two electrodes of the light-emitting lamps.

3. The point light source detection apparatus according to claim 2, wherein The conductive component includes an insulating porcelain bottle and electrical contacts made of conductive material connected to the insulating porcelain bottle. The two electrical contacts are respectively electrically connected to the two electrodes of the light-emitting lamp.

4. The point light source detection apparatus according to claim 3, wherein The electrical contact includes a first electrical contact plate, a second electrical contact plate spaced apart from the first electrical contact plate, and a third electrical contact plate whose two ends are respectively connected to the first electrical contact plate and the second electrical contact plate. The first electrical contact plate is connected to the insulating porcelain bottle, and the second electrical contact plate is connected to the electrode of the light-emitting lamp.

5. The point light source detection apparatus according to claim 4, wherein: The third electrical contact plate is made of an elastic material, and the two ends of the third electrical contact plate are brought together to form an arc shape.

6. The point source detection apparatus of any one of claims 2-5, wherein: The light source is a xenon lamp.

7. The point light source detection device as described in any one of claims 1-5, characterized in that: The light-emitting structure also includes a cooling fan. The light source housing has an air outlet that communicates with the accommodating cavity. The air outlet is located opposite to the light-transmitting hole. The cooling fan is connected to the light source housing at the air outlet.

8. The point light source detection device as described in any one of claims 1-5, characterized in that: The support structure includes a support plate for placing the glass plate, a positioning clamp disposed on the support plate, and a support column connected to the support plate. The positioning clamp is used to position the glass plate. The surface of the glass plate has an angle with the direction of light propagation, and the angle ranges from 30 to 45 degrees.

9. The point light source detection device as described in claim 8, characterized in that: The positioning fixture includes two clamping plates disposed on the support plate and a driving mechanism connected to the support plate. One of the clamping plates is fixedly disposed, and the other clamping plate is slidably disposed and connected to the driving mechanism. The driving mechanism drives the corresponding clamping plate to slide so that the two clamping plates clamp the glass plate.

10. A float glass production line, characterized in that, The point light source detection device as described in any one of claims 1-9.

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