Tempered glass positioning device and tempered glass production process

Abstract

The invention relates to the technical field of tempered glass production, and discloses a tempered glass positioning device which comprises a lower hearth, an upper hearth, a feeding transmission roller way and a discharging transmission roller way, supporting frames are fixedly connected to the outer walls of the two sides of the lower hearth, and a connecting shaft is rotationally connected to the middle position of each supporting frame; multiple rotating blocks distributed at equal intervals are fixedly connected to the outer wall of the connecting shaft, limiting rods are slidably connected to the two ends of each rotating block, limiting plates are fixedly connected to the ends, away from the lower hearth, of the limiting rods, and positioning frames are fixedly connected to the ends, close to the middle of the lower hearth, of the limiting rods. According to the tempered glass positioning device, the positioning frame is pushed through the air cylinder, the positioning roller is attached to the edge of glass, transverse displacement of the glass is effectively limited by combining sliding guiding of the limiting rod, the positioning roller is located in a gap between the ceramic rollers, normal conveying of the glass cannot be interfered, and stable contact between the glass and the positioning roller can be guaranteed; the defects of scratching, warping and the like caused by glass displacement are reduced, and the product quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of tempered glass production technology, specifically to a tempered glass positioning device and a tempered glass production process. Background Technology

[0002] The core strengthening mechanism of tempered glass lies in the compressive stress layer formed on its surface. This stress state effectively counteracts external impact forces, a characteristic achieved through precise heating and rapid cooling cycles in a tempering furnace. Ordinary annealed glass, due to its uniform internal stress distribution, typically has a bending strength between 40 and 60 MPa. After tempering, the glass surface rapidly contracts to form a compressive stress layer, while a tensile stress layer forms internally, increasing the overall strength to 120 to 150 MPa. Furthermore, when tempered glass breaks, it forms honeycomb-shaped, blunt-angled small particles, significantly reducing the risk of cuts. Therefore, the tempering furnace is an indispensable core piece of equipment in tempered glass production.

[0003] As per existing technology, patent CN103274586B discloses a glass tempering furnace, which includes an upper furnace chamber, a lower furnace chamber, a transmission roller conveyor, heating wires, and a radiant plate. It also includes a radiant tube assembly and a convection tube. The radiant tube assembly is suspended inside the upper furnace chamber and positioned below the heating wires. The radiant tube assembly is composed of several parallel radiant tubes connected side-by-side. The convection tube is suspended below the radiant tube, with its air inlet connected to a fan. Air jet holes are provided on the convection tube. This glass tempering furnace uses heat-resistant stainless steel radiant tubes instead of traditional radiant plates, increasing the surface area of ​​the radiant surface by approximately 60% and resulting in faster heat transfer. The convection tube uses a fan for air supply, effectively controlling glass deformation.

[0004] The glass tempering furnace described in the aforementioned patent still has certain shortcomings: Although the aforementioned glass tempering furnace uses heat-resistant stainless steel radiant tubes, which replace traditional radiant plates for faster heat transfer and effectively control glass deformation, it lacks positioning restrictions for the glass. Precise positioning is crucial when tempering ordinary glass in the furnace. Its core function is to prevent displacement of the glass during heating, softening, cooling, solidification, and transport, ensuring that the glass remains in the preset position. This measure guarantees a uniform distribution of compressive stress on the glass surface and tensile stress within, while maintaining product dimensional accuracy and surface quality, avoiding defects such as scratches, warping, or spontaneous breakage caused by displacement. Without positioning, the glass may shift due to high-temperature softening and deformation, transport vibration deviation, or uneven thermal stress, leading to unbalanced stress distribution, dimensional deviations, and ultimately significantly reducing the product qualification rate. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a tempered glass positioning device that prevents the glass from shifting inside the tempering furnace.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tempered glass positioning device, comprising a lower furnace chamber, an upper furnace chamber, a feeding transmission roller conveyor, and a discharging transmission roller conveyor. Support frames are fixedly connected to the outer walls of both sides of the lower furnace chamber. A connecting shaft is rotatably connected to the middle position of the support frames. Multiple equidistantly distributed rotating blocks are fixedly connected to the outer wall of the connecting shaft. Limiting rods are slidably connected to both ends of each rotating block. A limiting plate is fixedly connected to the end of the limiting rod away from the lower furnace chamber. A positioning frame is fixedly connected to the end of the limiting rod near the middle position of the lower furnace chamber. A rotating shaft is installed on the side of the positioning frame away from the limiting rod. A positioning roller is sleeved on the outside of the rotating shaft. The positioning roller is located in the gap between ceramic roller shafts within the lower furnace chamber. A cylinder is fixedly connected to the side of the rotating block located in the middle position of the lower furnace chamber away from the positioning frame. The output end of the cylinder is fixedly connected to the positioning frame.

[0007] Furthermore, a compression fixing plate is slidably connected inside the positioning frame. The side wall of the compression fixing plate and the inner wall of the positioning frame are both provided with mounting grooves that match the rotating shaft. Multiple sets of guide blocks are slidably connected to the middle position of the compression fixing plate. The two ends of the guide blocks are respectively fixedly connected to the two sides inside the positioning frame. Multiple sets of threaded rods are fixedly connected to the side of the positioning frame away from the limiting rod. One end of the threaded rod passes through the compression fixing plate and is threadedly connected to a nut.

[0008] Furthermore, the top of the positioning frame is provided with multiple replacement slots, the number and position of which are matched with the number and position of the positioning rollers, and the width of the replacement slots is greater than the diameter of the positioning rollers.

[0009] Furthermore, a motor is provided at one end of the connecting shaft, the output end of the motor is fixedly connected to the connecting shaft, and an installation plate is provided at the bottom of the motor and fixedly connected to the outer wall of the lower furnace. An inclined support plate is fixedly connected to the bottom of the installation plate, and the side wall of the inclined support plate is fixedly connected to the lower furnace.

[0010] Furthermore, guide rails are fixedly connected to both sides of the top of the feed transmission roller conveyor, and a slide plate is slidably connected to the top of the guide rails. A fixed hinge block is fixedly connected to the end of the slide plate away from the positioning frame, and a slide rail is fixedly connected to the end of the slide plate near the positioning frame. A slider is slidably connected to the top of the slide rail, and a movable hinge block is sleeved on the end of the slider near the middle of the lower furnace. A guide plate is hinged to the end of the movable hinge block away from the slide plate, and the other end of the guide plate is hinged to the fixed hinge block. A spring is provided inside the movable hinge block, one end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the inner wall of the movable hinge block.

[0011] Furthermore, a positioning block is provided on the side of the movable hinge block near the positioning frame, and the positioning block is fixedly connected to the movable hinge block.

[0012] Furthermore, a reinforcing plate is fixedly connected to the side of the fixed hinge block near the slider. The bottom of the reinforcing plate is fixedly connected to the slide plate. A bolt is threadedly connected to the middle position of the slide plate. The lower end of the bolt passes through the slide plate and abuts against the top of the guide rail.

[0013] This invention also provides a tempered glass manufacturing process, comprising the following steps: Step 1: Based on the width of the glass, start the cylinder to push the positioning frame to move until the positioning roller just contacts the edge of the glass.

[0014] Step 2: Move the position of the slide plate and move the hinge block so that the positioning block abuts against the pressing and fixing plate, thereby connecting the positioning frame and the guide plate to guide the position of the glass.

[0015] Step 3: Place the cut, polished, cleaned and dried glass sheet on the feed conveyor rollers and start the entire equipment. After being guided by the guide plate, the glass will be guided between the two positioning frames, so that the glass accurately enters the ceramic rollers in the lower furnace. At the same time, the positioning rollers in the furnace contact the two sides of the glass. Through the sliding guide of the limit rod and the stable thrust of the cylinder, the lateral displacement of the glass is restricted, ensuring that the glass moves along the preset path.

[0016] Step 4: The glass is heated evenly in the upper and lower furnace chambers, with the temperature controlled at 620-650℃ to reach the glass softening point. During the heating process, the positioning rollers continuously position the glass laterally to prevent displacement caused by high-temperature softening and ensure uniform distribution of thermal stress on the glass surface and inside.

[0017] Step 5: After heating is complete, the glass enters the cooling section, where the glass surface is rapidly cooled by high-pressure cold air at a rate of 100-200℃ / s. During the cooling process, the positioning frame remains operational until the glass temperature drops to near room temperature, ensuring that the glass does not shift during the curing process and forms a stable stress structure.

[0018] Step 6: After the glass has cooled, it can be sent out via the discharge conveyor rollers.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. This tempered glass positioning device uses a cylinder to push the positioning frame, causing the positioning roller to fit against the edge of the glass. Combined with the sliding guide of the limiting rod, it effectively restricts the lateral displacement of the glass. The positioning roller is located in the gap between the ceramic rollers, which does not interfere with the normal conveying of the glass and ensures stable contact between the glass and the positioning roller. The rotating block can adjust the angle of the entire positioning frame. When the positioning roller is damaged, the entire positioning frame can be rotated out between the upper and lower furnace chambers after the upper furnace chamber is raised to facilitate the replacement of the positioning roller. The positioning frame and positioning roller reduce defects such as scratches and warping caused by glass displacement, thus ensuring product quality.

[0020] 2. This tempered glass positioning device, through the cooperation of the pressing fixing plate, threaded rod and nut, can flexibly adjust the installation tightness of the positioning roller, ensuring that the positioning roller is stable and does not loosen during operation, maintaining positioning accuracy. At the same time, it is easy to replace positioning rollers of different specifications according to needs. The operation is simple and efficient, improving the adaptability and maintenance convenience of the device.

[0021] 3. This tempered glass positioning device has a replacement slot at the top of the positioning frame that matches the positioning roller and is wider. The positioning roller can be quickly removed or installed without disassembling the positioning frame, which greatly shortens the replacement and maintenance time, reduces downtime costs, and improves production efficiency and equipment operation and maintenance convenience. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the lower furnace structure of the present invention; Figure 3 For the present invention Figure 2 A magnified schematic diagram of the local structure at point A; Figure 4 For the present invention Figure 2 A magnified view of the structure at point B in the middle; Figure 5 This is a schematic diagram of the connection structure between the positioning frame and the rotating shaft of the present invention; Figure 6 This is a partial cross-sectional view of the positioning frame of the present invention; Figure 7 This is a schematic diagram of the connection structure between the connecting shaft and the support frame of the present invention; Figure 8 This is a schematic diagram of the connection structure between the guide plate and the slide plate of the present invention; Figure 9 For the present invention Figure 8 A magnified schematic diagram of the structure at point C.

[0023] In the diagram: 1. Lower furnace chamber; 2. Upper furnace chamber; 3. Feed transmission roller conveyor; 4. Discharge transmission roller conveyor; 5. Guide rail; 6. Slide plate; 7. Fixed hinge block; 8. Reinforcing plate; 9. Guide plate; 10. Moving hinge block; 11. Slider; 12. Spring; 13. Slide rail; 14. Positioning block; 15. Bolt; 16. Mounting plate; 17. Inclined support plate; 18. Motor; 19. Connecting shaft; 20. Rotating block; 21. Support frame; 22. Cylinder; 23. Positioning frame; 24. Limiting rod; 25. Limiting plate; 26. Mounting slot; 27. Rotating shaft; 28. Positioning roller; 29. ​​Extrusion fixing plate; 30. Guide block; 31. Threaded rod; 32. Nut; 33. Replacement slot. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Please see Figures 1 to 9 A tempered glass positioning device includes a lower furnace chamber 1, an upper furnace chamber 2, a feeding drive roller conveyor 3, and a discharging drive roller conveyor 4. Support frames 21 are fixedly connected to the outer walls on both sides of the lower furnace chamber 1. A connecting shaft 19 is rotatably connected to the middle position of the support frame 21. Multiple equidistantly distributed rotating blocks 20 are fixedly connected to the outer wall of the connecting shaft 19. Limiting rods 24 are slidably connected to both ends of the rotating blocks 20. A limiting plate 25 is fixedly connected to the end of the limiting rod 24 away from the lower furnace chamber 1. A positioning frame 23 is fixedly connected to the end of the limiting rod 24 near the middle position of the lower furnace chamber 1. A rotating shaft 27 is installed on the side of the positioning frame 23 away from the limiting rod 24. A positioning roller 28 is sleeved on the outside of the rotating shaft 27. The positioning roller 28 is located in the gap between the ceramic roller shafts inside the lower furnace chamber 1. A cylinder 22 is fixedly connected to the side of the rotating block 20 located in the middle position of the lower furnace chamber 1 away from the positioning frame 23. The output end of the cylinder 22 is fixedly connected to the positioning frame 23.

[0026] Please see Figures 1 to 9 The present invention provides a tempered glass manufacturing process, comprising the following steps: Step 1: Based on the width of the glass, start the cylinder 22 to push the positioning frame 23 to move until the positioning roller 28 just contacts the edge of the glass.

[0027] Step 2: Move the position of the slide plate 6 and move the movable hinge block 10 so that the positioning block 14 abuts against the pressing and fixing plate 29, thereby connecting the positioning frame 23 with the guide plate 9 to guide the position of the glass.

[0028] Step 3: Place the cut, polished, cleaned and dried glass sheet on the feed conveyor roller 3 and start the whole equipment. After being guided by the guide plate 9, the glass will be guided between the two positioning frames 23, so that the glass accurately enters the ceramic roller chute of the lower furnace 1. At the same time, the positioning roller 28 in the furnace contacts the two sides of the glass. Through the sliding guide of the limit rod 24 and the stable thrust of the cylinder 22, the lateral displacement of the glass is restricted, ensuring that the glass moves along the preset path.

[0029] Step 4: The upper furnace chamber 2 and the lower furnace chamber 1 heat the glass evenly, and the temperature is controlled at 620-650℃ to reach the softening point of the glass. During the heating process, the positioning roller 28 continuously positions the glass laterally to prevent displacement caused by high temperature softening and to ensure that the thermal stress distribution on the glass surface and inside is uniform.

[0030] Step 5: After heating is completed, the glass enters the cooling section, where the glass surface is rapidly cooled by high-pressure cold air at a rate of 100-200℃ / s. During the cooling process, the positioning frame 23 remains in operation until the glass temperature drops to near room temperature, ensuring that the glass does not shift during the curing process and forms a stable stress structure.

[0031] Step 6: After the glass has cooled, it can be sent out through the discharge conveyor roller 4.

[0032] The tempered glass positioning device and tempered glass production process of this invention use a cylinder 22 to push a positioning frame 23, causing the positioning roller 28 to fit against the edge of the glass. Combined with the sliding guide of the limiting rod 24, this effectively restricts the lateral displacement of the glass. The positioning roller 28 is located in the gap between the ceramic rollers in the lower furnace 1, which neither interferes with the normal conveying of the glass nor prevents the glass from being in stable contact with the positioning roller 28. The rotating block 20 can adjust the angle of the entire positioning frame 23. If the positioning roller 28 is damaged, the entire positioning frame 23 can be rotated out from between the upper furnace 2 and the lower furnace 1 after the upper furnace 2 is raised, so that the positioning roller 28 can be replaced. The positioning frame 23 and the positioning roller 28 reduce defects such as scratches and warping caused by glass displacement, thus ensuring product quality.

[0033] As a preferred embodiment of the present invention, a compression fixing plate 29 is slidably connected inside the positioning frame 23. The side wall of the compression fixing plate 29 and the inner wall of the positioning frame 23 are both provided with mounting grooves 26 that match the rotating shaft 27. Multiple sets of guide blocks 30 are slidably connected to the middle position of the compression fixing plate 29. The two ends of the guide blocks 30 are respectively fixedly connected to the two sides inside the positioning frame 23. Multiple sets of threaded rods 31 are fixedly connected to the side of the positioning frame 23 away from the limiting rod 24. One end of the threaded rod 31 passes through the compression fixing plate 29 and is threadedly connected to a nut 32.

[0034] Specifically, by squeezing the fixing plate 29, threaded rod 31 and nut 32 together, the installation tightness of the positioning roller 28 can be flexibly adjusted to ensure that the positioning roller 28 is stable and does not loosen when working, and maintains positioning accuracy; at the same time, it is easy to replace positioning rollers 28 of different specifications according to needs, the operation is simple and efficient, and the adaptability and maintenance convenience of the device are improved.

[0035] As a preferred embodiment of the present invention, the top of the positioning frame 23 is provided with a plurality of replacement grooves 33, the number and position of the replacement grooves 33 being matched with the number and position of the positioning rollers 28, and the width of the replacement grooves 33 being greater than the diameter of the positioning rollers 28.

[0036] Specifically, the replacement slot 33 at the top of the positioning frame 23 matches the positioning roller 28 and is wider, allowing the positioning roller 28 to be quickly removed or installed without disassembling the positioning frame 23, which greatly shortens the replacement and maintenance time, reduces downtime costs, and improves production efficiency and equipment operation and maintenance convenience.

[0037] As a preferred technical solution of the present invention, a motor 18 is provided at one end of the connecting shaft 19, the output end of the motor 18 is fixedly connected to the connecting shaft 19, and a mounting plate 16 is provided at the bottom of the motor 18 and fixedly connected to the outer wall of the lower furnace chamber 1. An inclined support plate 17 is fixedly connected to the bottom of the mounting plate 16, and the side wall of the inclined support plate 17 is fixedly connected to the lower furnace chamber 1.

[0038] Specifically, the motor 18 drives the connecting shaft 19 to rotate, realizing automatic adjustment of the positioning angle, replacing manual operation, improving positioning efficiency and accuracy. When replacing the positioning roller 28, the positioning frame 23 can be rotated to a vertical position to facilitate the replacement of the positioning roller 28. The mounting plate 16 and the inclined support plate 17 enhance the stability of the motor 18, reduce the impact of vibration, and ensure the long-term reliability of the positioning system.

[0039] As a preferred embodiment of the present invention, guide rails 5 are fixedly connected to both sides of the top of the feed transmission roller conveyor 3. A slide plate 6 is slidably connected to the top of the guide rail 5. A fixed hinge block 7 is fixedly connected to the end of the slide plate 6 away from the positioning frame 23. A slide rail 13 is fixedly connected to the end of the slide plate 6 near the positioning frame 23. A slider 11 is slidably connected to the top of the slide rail 13. A movable hinge block 10 is sleeved on the end of the slider 11 near the middle of the lower furnace chamber 1. A guide plate 9 is hinged to the end of the movable hinge block 10 away from the slide plate 6. The other end of the guide plate 9 is hinged to the fixed hinge block 7. A spring 12 is provided inside the movable hinge block 10. One end of the spring 12 is fixedly connected to the slider 11, and the other end of the spring 12 is fixedly connected to the inner wall of the movable hinge block 10.

[0040] Specifically, the structure of the feed transmission roller conveyor 3, including the guide rail 5, slide plate 6, guide plate 9, and spring 12, allows the guide plate 9 to elastically guide the edge of the glass, avoiding hard contact damage. The positioning block 14 assists in correcting the position of the guide plate 9, enabling the glass to enter the furnace accurately, effectively reducing feeding deviation and improving the accuracy of subsequent tempering positioning.

[0041] As a preferred technical solution of the present invention, the movable hinge block 10 is provided with a positioning block 14 on the side near the positioning frame 23, and the positioning block 14 is fixedly connected to the movable hinge block 10.

[0042] Specifically, the positioning block 14 on the side of the movable hinge block 10 can fit against the pressing and fixing plate 29, making the connection between the guide plate 9 and the positioning frame 23 smoother. In addition, the guide plate 9 can further correct the feeding position, improve the positioning effect of the glass before entering the furnace, ensure that the glass is conveyed along the preset path, reduce lateral displacement, and improve the product dimensional accuracy.

[0043] As a preferred technical solution of the present invention, a reinforcing plate 8 is fixedly connected to the side of the fixed hinge block 7 near the slider 11. The bottom of the reinforcing plate 8 is fixedly connected to the slide plate 6. A bolt 15 is threadedly connected to the middle position of the slide plate 6. The lower end of the bolt 15 passes through the slide plate 6 and abuts against the top of the guide rail 5.

[0044] Specifically, the reinforcing plate 8 enhances the structural strength of the fixed hinge block 7, thereby providing more stable support for the guide plate 9. The bolt 15 fixes the slide plate 6, which can be quickly adjusted to adapt to glass of different widths, improving the device's compatibility with various glass specifications. It is easy to operate and has a stable structure.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A tempered glass positioning device, comprising a lower furnace chamber (1), an upper furnace chamber (2), a feeding drive roller conveyor (3), and a discharging drive roller conveyor (4), characterized in that, Support frames (21) are fixedly connected to the outer walls on both sides of the lower furnace chamber (1). A connecting shaft (19) is rotatably connected to the middle position of the support frame (21). Multiple equidistant rotating blocks (20) are fixedly connected to the outer wall of the connecting shaft (19). Limiting rods (24) are slidably connected to both ends of the rotating blocks (20). A limiting plate (25) is fixedly connected to the end of the limiting rod (24) away from the lower furnace chamber (1). The limiting rod (24) is closer to the middle position of the lower furnace chamber (1). A positioning frame (23) is fixedly connected to one end. A rotating shaft (27) is installed on the side of the positioning frame (23) away from the limiting rod (24). A positioning roller (28) is sleeved on the outside of the rotating shaft (27). The positioning roller (28) is located in the gap between the ceramic roller shafts in the lower furnace chamber (1). A cylinder (22) is fixedly connected to the side of the rotating block (20) located in the middle of the lower furnace chamber (1) away from the positioning frame (23). The output end of the cylinder (22) is fixedly connected to the positioning frame (23).

2. The tempered glass positioning device according to claim 1, characterized in that, The positioning frame (23) is slidably connected to a pressing fixing plate (29). The side wall of the pressing fixing plate (29) and the inner wall of the positioning frame (23) are both provided with mounting grooves (26) that match the rotating shaft (27). Multiple sets of guide blocks (30) are slidably connected to the middle position of the pressing fixing plate (29). The two ends of the guide blocks (30) are respectively fixedly connected to the two sides inside the positioning frame (23). Multiple sets of threaded rods (31) are fixedly connected to the side of the positioning frame (23) away from the limiting rod (24). One end of the threaded rod (31) passes through the pressing fixing plate (29) and is threadedly connected to a nut (32).

3. The tempered glass positioning device according to claim 2, characterized in that, The top of the positioning frame (23) is provided with multiple replacement slots (33), the number and position of the replacement slots (33) are matched with the number and position of the positioning rollers (28), and the width of the replacement slots (33) is greater than the diameter of the positioning rollers (28).

4. A tempered glass positioning device according to claim 3, characterized in that, One end of the connecting shaft (19) is provided with a motor (18), the output end of the motor (18) is fixedly connected to the connecting shaft (19), the bottom of the motor (18) is provided with an installation plate (16) fixedly connected to the outer wall of the lower furnace (1), the bottom of the installation plate (16) is fixedly connected with an inclined support plate (17), and the side wall of the inclined support plate (17) is fixedly connected to the lower furnace (1).

5. A tempered glass positioning device according to claim 4, characterized in that, The top of the feed transmission roller (3) is fixedly connected to both sides of the guide rail (5). The top of the guide rail (5) is slidably connected to the slide plate (6). The end of the slide plate (6) away from the positioning frame (23) is fixedly connected to the fixed hinge block (7). The end of the slide plate (6) near the positioning frame (23) is fixedly connected to the slide rail (13). The top of the slide rail (13) is slidably connected to the slider (11). The end of the slider (11) near the middle position of the lower furnace (1) is fitted with a movable hinge block (10). The end of the movable hinge block (10) away from the slide plate (6) is hinged to the guide plate (9). The other end of the guide plate (9) is hinged to the fixed hinge block (7). The movable hinge block (10) is provided with a spring (12). One end of the spring (12) is fixedly connected to the slider (11). The other end of the spring (12) is fixedly connected to the inner wall of the movable hinge block (10).

6. A tempered glass positioning device according to claim 5, characterized in that, The movable hinge block (10) has a positioning block (14) on the side near the positioning frame (23), and the positioning block (14) is fixedly connected to the movable hinge block (10).

7. A tempered glass positioning device according to claim 6, characterized in that, The fixed hinge block (7) is fixedly connected to a reinforcing plate (8) on the side near the slider (11). The bottom of the reinforcing plate (8) is fixedly connected to the slide plate (6). A bolt (15) is threadedly connected to the middle position of the slide plate (6). The lower end of the bolt (15) passes through the slide plate (6) and abuts against the top of the guide rail (5).

8. The tempered glass manufacturing process according to claim 7, characterized in that, Includes the following steps: Step 1: Based on the width of the glass, start the cylinder (22) and push the positioning frame (23) to move until the positioning roller (28) just contacts the edge of the glass.

9. Step 2: Move the position of the slide plate (6) and move the hinge block (10) so that the positioning block (14) abuts against the pressing fixing plate (29), thereby connecting the positioning frame (23) and the guide plate (9) together to guide the position of the glass.

10. Step 3: Place the glass sheet after cutting, grinding, cleaning and drying on the feeding drive roller (3) and start the whole equipment. After being guided by the guide plate (9), the glass will be guided between the two positioning frames (23) so that the glass can accurately enter the ceramic roller of the lower furnace (1). At the same time, the positioning roller (28) in the furnace contacts the two sides of the glass. Through the sliding guide of the limit rod (24) and the stable thrust of the cylinder (22), the lateral displacement of the glass is restricted, ensuring that the glass moves along the preset path.

11. Step 4: The upper furnace (2) and lower furnace (1) heat the glass evenly, and the temperature is controlled at 620-650℃ to reach the glass softening point. During the heating process, the positioning roller (28) continuously positions the glass laterally to prevent displacement caused by high temperature softening and ensure that the thermal stress distribution on the glass surface and inside is uniform.

12. Step 5: After heating is completed, the glass enters the cooling section and the glass surface is rapidly cooled by high-pressure cold air. The cooling rate is controlled at 100-200℃ / s. During the cooling process, the positioning frame (23) remains in working state until the glass temperature drops to near room temperature, ensuring that the glass does not shift during the curing process and forms a stable stress structure.

13. Step 6: After the glass has cooled, it can be sent out through the discharge conveyor roller (4).

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