High optical glass production equipment and production process

Abstract

This invention relates to the field of glass production and processing technology, specifically to a method that sets an installation gap between adjacent transfer rollers corresponding to the air outlet, allowing for unobstructed cooling airflow. Combined with the conical air outlet, it can achieve concentrated air pressure and uniform air delivery. At the same time, it achieves balanced airflow distribution through multiple evenly arranged connecting pipes. Combined with differential air pressure control, it ensures that the cooling rate of the upper and lower glass surfaces is uniform, effectively eliminating glass temperature stress, avoiding defects such as glass warping, uneven optical refractive index, and surface wind spots, and significantly improving the optical uniformity and finished product qualification rate of high-optical glass.

Description

Technical Field

[0001] This invention relates to the field of glass production and processing technology, specifically to a high-optical-value glass production equipment and process. Background Technology

[0002] High-optical-value glass, with its excellent light transmittance, optical uniformity, and low dispersion characteristics, can enhance the overall appearance of a car when applied to automotive glass. Regardless of the condition, objects reflected on the car's exterior glass will appear undistorted, providing a sense of comfort and contributing to the overall aesthetic appeal of the vehicle.

[0003] Existing high-optical glass production equipment has many defects in use: First, the structural design of the cooling and tempering process after the glass is heated and formed is unreasonable, and the uniformity of air blowing cooling is poor, which can easily lead to temperature difference stress on the glass surface, causing problems such as glass warping, deformation, and uneven optical refractive index, which seriously affect the optical performance of the glass. At the same time, it will also affect the overall aesthetics of the vehicle after it is installed on it. Summary of the Invention

[0004] To address the aforementioned problems, embodiments of the present invention provide a high-optical-value glass production equipment and production process.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution: a high-optical-value glass production equipment, including a conveyor roller conveyor, wherein an upper sheet area, a heating area and a lower sheet area are sequentially arranged on the conveyor roller conveyor along the material conveying direction, a forming area is arranged between the heating area and the lower sheet area, and a transfer component is arranged in the forming area; The transfer assembly includes an upper idler roller group and a lower idler roller group, with a conveying gap reserved between the upper idler roller group and the lower idler roller group for material passage, and a cooling assembly is provided on both the upper idler roller group and the lower idler roller group. The cooling assembly includes an air collector shroud, with an air outlet at one end and an air supply module connected to the other end.

[0006] As a further improvement to the above technical solution: Both the upper and lower idler groups include multiple horizontally distributed transfer idlers, and each transfer idler is equipped with a synchronous shaft at its end.

[0007] Two adjacent transfer rollers form a conveyor group, and each conveyor group is equipped with a synchronous belt one at its end. A synchronous belt two is installed between two adjacent conveyor groups.

[0008] An installation gap corresponding to the position of the air outlet is provided between two adjacent transfer rollers.

[0009] The air outlet includes a longitudinally arranged connecting portion and an air supply portion. The air supply portion extends outward from the end connected to the connecting portion, and its width gradually decreases.

[0010] A connecting pipe is provided between the connecting part and the air collecting hood, and there are multiple connecting pipes that are evenly distributed along the length of the connecting part.

[0011] The air supply module includes a main air duct, one end of which is equipped with a fan, and the other end is equipped with air supply branch pipes that are respectively connected to two air collection hoods.

[0012] The number of fans is two, and they are symmetrically distributed about the main air duct. Each fan is equipped with a branch pipe for air supply connected to the main air duct.

[0013] A high-optical-value glass manufacturing process, using the aforementioned high-optical-value glass manufacturing equipment, comprises the following specific steps: Step 1: Loading the glass sheet. Place the glass to be processed in the loading area and let it move to the heating area with the conveyor rollers. Step 2: The glass to be processed is heated in the heating zone at a temperature of 580℃-690℃ for 230 seconds. Step 3: After the glass to be processed is heated, it enters the forming area; Step 4: In the forming area, the glass to be processed moves between the upper and lower roller groups. At this time, the cooling components start to operate, providing airflow to cool the glass to be processed for tempering. The cooling time is 16 seconds. Step 5: After the cooling process is completed, the glass to be processed is tempered and moved to the lower sheet area by the conveyor rollers to complete the processing.

[0014] Step Six: Inspect the processed glass using the following method: First, take the testing box and place it vertically. Coat the testing surface with evenly distributed black and white stripes. Set up a support under the testing box to place the glass to be tested, with a gap of 10-20 cm between them. Place the glass to be tested horizontally on the upper surface of the support, making it perpendicular to the testing surface of the testing box. Use a camera to collect the reflective patterns on the surface of the glass to be tested. The angle between the camera and the glass to be tested should be 18-20 degrees, and the shooting distance should be 1-3 meters. Compare the photos collected by the camera with the comparison standard to confirm whether the glass is qualified.

[0015] The upward air pressure in step four is 0.4 kPa, and the downward air pressure is 0.3 kPa.

[0016] The beneficial effects of this invention are as follows: This invention sets an installation gap between adjacent transfer rollers corresponding to the air outlet, so that the cooling air is not obstructed by any structure. With the help of the conical air outlet, it can achieve air pressure concentration and uniform air delivery. At the same time, the air volume is evenly distributed through multiple sets of evenly arranged connecting pipes. Combined with the differential air pressure control between the upper and lower surfaces, the cooling rate of the upper and lower glass surfaces is uniform, which effectively eliminates the temperature difference stress of the glass and avoids defects such as glass warping, uneven optical refractive index, and surface wind spots. This greatly improves the optical uniformity of high optical glass and the finished product qualification rate. The air supply module structure with dual fans provides symmetrical air supply, ensuring sufficient air volume and stable air pressure. This guarantees the continuous and stable operation of the cooling and tempering process. Combined with precise heating temperature, heating time, cooling time, and air pressure parameters, it forms a standardized and high-precision glass tempering production process, suitable for the large-scale precision production of high-end, high-optical glass, effectively improving production efficiency and product quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the air outlet in this invention; Figure 4 This is a cross-sectional view of the present invention; Figure 5 This is a schematic diagram of the testing box. Figure 6 This is a diagram for comparison with the standard.

[0018] In the diagram: 1. Conveyor roller conveyor; 2. Upper sheet area; 3. Heating zone; 4. Lower sheet area; 5. Forming zone; 6. Upper idler roller assembly; 7. Lower idler roller assembly; 8. Conveying gap; 9. Air collector hood; 10. Air outlet; 11. Air supply module; 12. Transfer idler roller; 13. Synchronous shaft; 14. Synchronous belt one; 15. Synchronous belt two; 16. Installation gap; 17. Connecting part; 18. Air supply part; 19. Connecting pipe; 20. Main air duct; 21. Fan; 22. Air supply branch pipe; 23. Air supply branch pipe; 24. Detection box; 25. Support frame. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] like Figure 1-4As shown, it includes a conveyor roller 1, on which an upper sheet area 2, a heating area 3 and a lower sheet area 4 are arranged sequentially along the material conveying direction. A forming area 5 is arranged between the heating area 3 and the lower sheet area 4. A transfer component for transferring glass materials is arranged in the forming area 5.

[0021] The transfer assembly includes an upper idler roller group 6 and a lower idler roller group 7. A conveying gap 8 is reserved between the upper idler roller group 6 and the lower idler roller group 7 for material passage, which is suitable for the smooth conveying of glass sheets. Cooling components are provided on both the upper idler roller group 6 and the lower idler roller group 7, which can simultaneously cool and temper the high-temperature glass during the conveying process.

[0022] The cooling assembly includes an air collector shroud 9, with an air outlet 10 fixedly installed at one end and an air supply module 11 sealed to the other end. The air supply module 11 provides the cooling air source, which is collected by the air collector shroud 9 and then precisely blown onto the glass surface through the air outlet 10. The distance between two adjacent air outlets is 100mm. Compared with the conventional air outlet spacing of 120mm, the density of air outlets per unit area is increased by 20%. This is mainly to solve the problem of wind spots (stress spots) on the glass surface caused by wind tempering. Wind spots cause the glass surface to appear hazy, and the glass surface loses its original state.

[0023] Both the upper idler group 6 and the lower idler group 7 include multiple horizontally evenly distributed transfer idlers 12. Each transfer idler 12 has a synchronous shaft 13 fixedly mounted at its end for transmitting power and achieving synchronous rotation. Two adjacent transfer idlers 12 form a conveying group. Each conveying group has a synchronous belt 14 fitted at its end to achieve synchronous operation of the two idlers within a single group. A synchronous belt 2 15 is set between two adjacent conveying groups to achieve linkage and synchronization of the idlers in each group, ensuring overall conveying consistency.

[0024] An installation gap 16 is provided between two adjacent transfer rollers 12, corresponding to the position of the air outlet 10, so that the cooling air blown out by the air outlet 10 can directly penetrate the gap and act on the glass surface without obstruction or dead angles, ensuring uniform cooling.

[0025] The air outlet 10 includes a longitudinally arranged connecting portion 17 and an air supply portion 18. The air supply portion 18 extends outward from the end connected to the connecting portion 17, gradually decreasing in width to form a concentrating air supply structure, effectively improving air supply penetration and air pressure uniformity. Multiple connecting pipes 19 are assembled between the connecting portion 17 and the air collecting hood 9. The multiple connecting pipes 19 are evenly distributed along the length of the connecting portion 17 to achieve uniform airflow distribution and avoid situations where the local airflow is too large or too small.

[0026] The air supply module 11 includes a main air duct 20. One end of the main air duct 20 is equipped with a fan 21, and the other end is equipped with air supply branch pipes 22 that are respectively connected to the upper and lower air collection hoods 9, so as to realize independent air supply to the upper and lower cooling components and controllable air pressure. There are two fans 21, which are symmetrically distributed about the main air duct 20. Each fan 21 is equipped with an air supply branch pipe 23 connected to the main air duct 20. The dual fans provide symmetrical air supply, which improves the stability of the air source and the air supply efficiency. In this embodiment, there are two fans 21. The air volume can be adjusted at any time. When a small air volume is needed, one fan can be selected at full power and one at low power. Compared with the conventional use of a large power motor, the output of air volume can be better controlled. At the same time, the layout can be optimized and the footprint of a single fan can be reduced.

[0027] This embodiment also discloses a high-optical-value glass manufacturing process, which uses the aforementioned high-optical-value glass manufacturing equipment. The specific processing steps are as follows: Step 1: Loading operation. The staff places the high-optical glass to be processed steadily in the loading area 2 of the conveyor roller 1. After starting the equipment, the glass moves at a constant speed with the conveyor roller 1 into the heating area 3, completing the automatic loading and feeding. Step 2: Constant temperature heating operation. After the glass enters heating zone 3, the equipment control system precisely controls the heating temperature to 580℃-690℃, and the constant temperature heating time is stable at 230 seconds, so that the glass is heated evenly and the internal and external temperatures are consistent, which provides a good foundation for subsequent tempering and cooling. Step 3: Forming and feeding operation. After the glass has been heated to a constant temperature, it is smoothly conveyed by the conveyor roller 1 to the interior of the forming area 5 and precisely enters the tempering and cooling station. Step 4: Tempering with air blowing. The high-temperature glass is moved into the conveying gap 8 between the upper roller group 6 and the lower roller group 7. The equipment cooling components start simultaneously, and the dual fans 21 generate cold air, which is delivered to the air collection hood 9 through the main air duct 20 and the air supply branch pipe 22. Then, the air blowers 10 simultaneously cool the upper and lower surfaces of the glass. During the operation, the upper blowing air pressure is strictly controlled at 0.4 kPa and the lower blowing air pressure is 0.3 kPa, with continuous cooling for 16 seconds. Compared with the conventional heating temperature of 600-710℃, heating time of 200 seconds, and cooling time of 23 seconds, this allows the glass to be tempered and shaped quickly and evenly, eliminating internal stress. Step 5: Unloading operation. After the glass has been cooled and tempered, its optical properties and structural strength are fully determined. Under the continuous conveying action of conveyor roller 1, it moves smoothly to the unloading area 4, where the staff can unload the glass, thus completing the entire processing operation of the high optical glass.

[0028] Step six: Inspect the processed glass. The specific inspection steps of this high-optical-value glass inspection method are as follows: like Figure 5As shown, take the test box 24 and coat the test surface of the test box 24 with alternating black and white diagonal stripes of uniform width. Take a bracket 25 for placing the glass to be tested, place the test box 24 on the bracket 25, and ensure that the test surface of the test box is perpendicular to the upper surface of the bracket. Place the glass to be tested horizontally on the upper surface of the support, so that it is perpendicular to the testing surface of the testing box. The gap between the testing box and the upper surface of the support is 10-20 cm. The reflective patterns on the glass surface are captured using a camera. The angle between the camera and the glass is 18-20 degrees, and the shooting distance is 1-3 meters. Using the acquired images, and Figure 6 The comparison criteria shown are used to confirm whether the glass belongs to high optical glass.

[0029] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0032] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A high-optical-value glass production equipment, characterized in that, It includes a conveyor roller (1), on which an upper sheet area (2), a heating area (3) and a lower sheet area (4) are arranged sequentially along the material conveying direction. A forming area (5) is arranged between the heating area (3) and the lower sheet area (4), and a transfer component is arranged in the forming area (5). The transfer assembly includes an upper idler group (6) and a lower idler group (7), with a conveying gap (8) reserved between the upper idler group (6) and the lower idler group (7) for material passage, and a cooling assembly provided on both the upper idler group (6) and the lower idler group (7). The cooling assembly includes an air collector shroud (9), one end of which is provided with an air outlet (10), and the other end is connected to an air supply module (11).

2. The high-optical-value glass production equipment according to claim 1, characterized in that, The upper roller group (6) and the lower roller group (7) each include multiple horizontally distributed transfer rollers (12), and each transfer roller (12) is provided with a synchronous shaft (13) at its end.

3. The high-optical-value glass production equipment according to claim 2, characterized in that, Two adjacent transfer rollers (12) form a conveyor group, and each conveyor group is provided with a synchronous belt one (14) at the end, and a synchronous belt two (15) is provided between two adjacent conveyor groups.

4. The high-optical-value glass production equipment according to claim 2, characterized in that, An installation gap (16) corresponding to the position of the air outlet (10) is provided between two adjacent transfer rollers (12).

5. The high-optical-value glass production equipment according to claim 1, characterized in that, The air outlet (10) includes a longitudinally arranged connecting part (17) and an air supply part (18). The air supply part (18) extends outward from the end connected to the connecting part (17) and its width gradually decreases.

6. The high-optical-value glass production equipment according to claim 5, characterized in that, A connecting pipe (19) is provided between the connecting part (17) and the air collecting hood (9). There are multiple connecting pipes (19) and they are evenly distributed along the length direction of the connecting part (17).

7. The high-optical-value glass production equipment according to claim 1, characterized in that, The air supply module (11) includes a main air duct (20), one end of which is equipped with a fan (21), and the other end is equipped with an air supply branch pipe (22) that is connected to two air collection hoods (9).

8. The high-optical-value glass production equipment according to claim 7, characterized in that, The number of fans (21) is two, and they are symmetrically distributed about the main air duct (20). Each fan (21) is equipped with an air supply branch pipe (23) connected to the main air duct (20).

9. A high-optical-value glass manufacturing process, characterized in that, Using the high-optical-value glass production equipment according to any one of claims 1-8, the specific steps are as follows: Step 1: Loading the glass sheet. Place the glass to be processed in the loading area and let it move to the heating area with the conveyor rollers. Step 2: The glass to be processed is heated in the heating zone at a temperature of 580℃-690℃ for 230 seconds. Step 3: After the glass to be processed is heated, it enters the forming area; Step 4: In the forming area, the glass to be processed moves between the upper and lower roller groups. At this time, the cooling components start to operate, providing airflow to cool the glass to be processed for tempering. The cooling time is 16 seconds. Step 5: After the cooling process is completed, the glass to be processed is tempered and moved to the lower sheet area by the conveyor rollers to complete the processing. Step 6: Inspect the processed glass. The inspection method is as follows: First, take the inspection box (24), place the inspection box 24 vertically, and coat the inspection surface with evenly distributed black and white stripes. Set up a bracket (25) for placing the glass to be tested below the inspection box. The gap between the two is 10-20 cm. Place the glass to be tested horizontally on the upper surface of the bracket (24) so ​​that it is perpendicular to the inspection surface of the inspection box (24). Use a camera to collect the reflective texture on the surface of the glass to be tested. The angle between the camera and the glass to be tested is 18-20 degrees, and the shooting distance is 1-3 meters. Compare the photos collected by the camera with the comparison standard to confirm whether the glass is qualified.

10. The high-optical-value glass manufacturing process according to claim 9, characterized in that, The upward air pressure in step four is 0.4 kPa, and the downward air pressure is 0.3 kPa.

Images