Coated curved glass hot bending forming device
By employing a heater and turntable rotation combined with a sliding column, retaining ring, and spring structure in the hot bending forming device for coated curved glass, the problem of uneven glass preheating was solved, achieving uniform heating and stable fixation, thus improving forming quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN ZHONGBO GLASS CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-19
AI Technical Summary
Existing coated curved glass hot bending forming equipment suffers from uneven heating during the glass preheating stage, which leads to prolonged preheating time and affects forming quality and yield.
A heater is placed near the glass, and a motor drives a turntable to rotate, causing the U-shaped lower mold and the glass to rotate. Combined with the structural design of sliding pillars, retaining rings, and springs, the glass is heated evenly from all directions, and the U-shaped upper and lower molds work together to achieve a stable and buffered fixing effect.
This technology enables uniform heating of glass during the preheating stage, improving molding quality and yield, and enhancing the processing efficiency and stability of the hot bending forming device.
Smart Images
Figure CN224258506U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of hot bending forming equipment, and in particular to a hot bending forming equipment for coated curved glass. Background Technology
[0002] With the increasing demands for aesthetics and functionality from industries such as consumer electronics and automobile manufacturing, coated curved glass, with its unique curved visual effect, light refraction properties, and structural strength, has become a core component in fields such as smartphone screens, automotive dashboards, and smart home panels. Hot bending is a key process in the production of coated curved glass, and the performance of the equipment directly affects the forming accuracy, surface quality, and production efficiency of the glass. However, traditional hot bending equipment has significant defects in terms of heating uniformity, pressure control, and automation, making it difficult to meet the mass production requirements of modern high-precision curved glass. There is an urgent need to achieve efficient production through technological innovation, such as refined heating process and dynamically adjustable forming pressure.
[0003] Existing coated curved glass hot bending forming equipment mainly consists of a heating system, a mold assembly, and a pressure drive mechanism. The heating system mostly uses fixed-position infrared lamps or resistance wires for heating, and achieves constant temperature heating through closed-loop control of temperature sensors. The mold assembly includes an upper mold and a lower mold, and the curved surface contour design defines the bending shape of the glass. The pressure drive mechanism is mainly based on hydraulic or pneumatic cylinders, which push the upper mold down through rigid connection to achieve the shaping of the glass.
[0004] However, existing hot bending forming equipment for coated curved glass generally suffers from uneven heating during the glass preheating stage, which seriously affects the forming quality and yield. Under the traditional fixed heating method, the glass is placed on the mold, and only the upper surface or local area directly receives heat radiation. The bottom and edge areas heat up slowly due to low heat conduction efficiency, resulting in temperature differences throughout the glass. This temperature unevenness will cause internal stress concentration in the glass during the hot bending process, resulting in defects such as curvature deviation, coating cracking, or glass breakage. In addition, the static heating mode leads to a longer preheating time and reduced production efficiency. Therefore, a hot bending forming equipment for coated curved glass is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a hot bending forming device for coated curved glass, which aims to improve the problem of uneven heating during the glass preheating stage in the prior art, which leads to prolonged preheating time and affects forming quality and yield.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A hot bending forming device for coated curved glass includes a support frame, a fixed frame fixedly connected to the top of the support frame, a guide column fixedly connected inside the fixed frame, a slide table slidably connected to the outer wall of the guide column, an electric push rod fixedly connected to the top of the fixed frame, a transmission block fixedly connected to the output end of the electric push rod, a U-shaped upper mold fixedly connected to the bottom of the transmission block, a rotating component provided on the top of the fixed frame, and a limit component provided inside the slide table.
[0008] The rotating assembly includes a turntable, which is rotatably connected to the top of the fixed frame. A motor is fixedly connected to the bottom of the fixed frame, and the output end of the motor is connected to the turntable. A U-shaped lower mold is fixedly connected to the top of the turntable.
[0009] As a further description of the above technical solution:
[0010] A cylinder is fixedly connected to one side of the support frame, a connecting frame is fixedly connected to the output end of the cylinder, a heater is fixedly connected to one end of the connecting frame, and the heater is located outside the turntable.
[0011] As a further description of the above technical solution:
[0012] The limiting assembly includes a second cylinder and a baffle. The outer wall of the second cylinder is fixedly connected to the inside of the slide table, and one side of the baffle is fixedly connected to the output end of the second cylinder.
[0013] As a further description of the above technical solution:
[0014] A fixing rod is fixedly connected to the side wall of the U-shaped lower mold, and a sliding column is slidably connected inside the fixing rod.
[0015] As a further description of the above technical solution:
[0016] A retaining ring is fixedly connected to the outer wall of the sliding column, and the retaining ring is in contact with the fixed rod.
[0017] As a further description of the above technical solution:
[0018] A spring is fitted on the outer wall of the sliding column, and one end of the spring is fixedly connected inside the fixed rod.
[0019] As a further description of the above technical solution:
[0020] A pressure plate is fixedly connected to the bottom end of the sliding column, and the other end of the spring is fixedly connected inside the pressure plate.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, by bringing the heater close to the glass and simultaneously driving the turntable to rotate, the U-shaped lower mold and the glass rotate accordingly. These structures work together to achieve the effect of uniform heating of the glass in all directions during the preheating stage. This solves the problem of uneven heating of the glass during the preheating stage, which leads to a longer preheating time and affects the molding quality and yield. As a result, the processing efficiency of the hot bending forming device is improved.
[0023] 2. In this utility model, the glass is initially positioned by the U-shaped lower mold, and the sliding column slides in the fixed rod, the retaining ring restricts the sliding of the sliding column, and the pressure plate applies elastic pressure to the glass under the action of the spring. These structures work together to achieve a stable and buffered fixing effect on the glass, which solves the problem that the traditional device has a single fixing method for glass and lacks buffering, which easily leads to the glass shifting or breaking due to thermal expansion and contraction during the hot bending process, thereby improving the stability of the hot bending forming device. Attached Figure Description
[0024] Figure 1 This is a three-dimensional schematic diagram of the hot bending forming device for coated curved glass proposed in this utility model.
[0025] Figure 2 This is a schematic diagram of the internal structure of the fixing frame of the hot bending forming device for coated curved glass proposed in this utility model.
[0026] Figure 3 This is a schematic diagram of the heater structure of the hot bending forming device for coated curved glass proposed in this utility model.
[0027] Figure 4 This is a schematic diagram of the baffle structure of the hot bending forming device for coated curved glass proposed in this utility model.
[0028] Figure 5 This is a schematic diagram of the pressure plate structure of the hot bending forming device for coated curved glass proposed in this utility model.
[0029] Legend:
[0030] 1. Support frame; 2. Fixing frame; 3. Guide column; 4. Slide table; 5. Electric push rod; 6. Transmission block; 7. U-shaped upper mold; 8. Cylinder 1; 9. Connecting frame; 10. Heater; 11. Motor; 12. Turntable; 13. U-shaped lower mold; 14. Cylinder 2; 15. Baffle; 16. Fixing rod; 17. Slide column; 18. Retaining ring; 19. Pressure plate; 20. Spring. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Reference Figures 1-3 This utility model provides an embodiment of a hot bending forming device for coated curved glass, including a support frame 1, a fixed frame 2 fixedly connected to the top of the support frame 1, a guide column 3 fixedly connected inside the fixed frame 2, and a slide table 4 slidably connected to the outer wall of the guide column 3. The sliding nature of the guide column 3 ensures that the slide table 4 can be accurately adjusted in position during the hot bending process, avoiding positional errors in the glass during bending. An electric push rod 5 is fixedly connected to the top of the fixed frame 2. The main function of the electric push rod 5 is to provide the necessary longitudinal pushing force to make the slide table 4 slide on the guide column 3. A transmission block 6 is fixedly connected to the output end of the electric push rod 5. The bottom of the transmission block 6 is fixedly connected to the top of the slide table 4. A U-shaped upper mold 7 is fixedly connected to the bottom of the slide table 4. A rotating component is provided on the top of the fixed frame 2, and a limit component is provided inside the slide table 4.
[0033] The rotating assembly includes a turntable 12, which is rotatably connected to the top of the fixed frame 2. A motor 11 is fixedly connected to the bottom of the fixed frame 2, and the output end of the motor 11 is connected to the turntable 12. A U-shaped lower mold 13 is fixedly connected to the top of the turntable 12, which cooperates with the U-shaped upper mold 7. This rotation function ensures that all parts of the glass can be heated evenly, avoiding deformation or cracks caused by uneven heat. It ensures that the glass can be heated sufficiently during the forming process and can be accurately bent into the required curved shape. A cylinder 8 is fixedly connected to one side of the support frame 1, and a connecting frame 9 is fixedly connected to the output end of the cylinder 8. A heater 10 is fixedly connected to one end of the connecting frame 9. The heater 10 is located outside the turntable 12. The function of the heater 10 is to heat the glass so that it becomes soft after reaching a certain temperature, making it easier to form.
[0034] Reference Figure 1 , Figure 4 and Figure 5The limiting assembly includes a second cylinder 14 and a baffle 15. The outer wall of the second cylinder 14 is fixedly connected to the inside of the slide table 4. One side of the baffle 15 is fixedly connected to the output end of the second cylinder 14. A fixing rod 16 is fixedly connected to the side wall of the U-shaped lower mold 13. A sliding column 17 is slidably connected inside the fixing rod 16. A retaining ring 18 is fixedly connected to the outer wall of the sliding column 17. The retaining ring 18 contacts the fixing rod 16. The cooperation between the sliding column 17 and the fixing rod 16 is limited by the retaining ring 18, further ensuring that the sliding column 17 will not slide excessively, thereby preventing the glass from shifting. A spring 20 is sleeved on the outer wall of the sliding column 17. One end of the spring 20 is fixedly connected to the inside of the fixing rod 16. A pressure plate 19 is fixedly connected to the bottom end of the sliding column 17. The other end of the spring 20 is fixedly connected to the inside of the pressure plate 19. Under the elastic force of the spring 20, the pressure plate 19 applies appropriate pressure to the glass. The spring 20 can be finely adjusted according to the degree of glass deformation.
[0035] Working principle: Before hot bending the coated curved glass, cylinder 8 drives the connecting frame 9, which in turn pushes the heater 10 at one end of the connecting frame 9 closer to the turntable 12. The heater 10 is turned on to preheat the coated curved glass placed on the U-shaped lower mold 13. At the same time, motor 11 drives the turntable 12 to rotate, and the U-shaped lower mold 13 rotates synchronously with the turntable 12. During the heating process of the heater 10, the glass rotates with the U-shaped lower mold 13, which further ensures that all parts of the glass are heated evenly, making the glass more evenly heated during the preheating stage. Then, the electric push rod 5 is started, and its output drives the transmission block 6, which in turn causes the slide table 4 to slide down along the guide column 3. The U-shaped upper mold 7 at the bottom of the slide table 4 descends and approaches the U-shaped lower mold 13. When the U-shaped upper mold 7 descends to a certain position, it cooperates with the U-shaped lower mold 13 to apply pressure to the preheated coated curved glass between the two. Under the combined action of pressure and temperature, the glass gradually bends and forms a shape that fits the mold, completing the hot bending process.
[0036] When it is necessary to fix the glass, the glass is placed on the U-shaped lower mold 13. The shape of the U-shaped lower mold 13 can play a preliminary positioning and fixing role for the glass. When the glass is placed, the sliding column 17 can slide inside the fixing rod 16. The retaining ring 18 on the sliding column 17 contacts the fixing rod 16 to limit the excessive sliding of the sliding column 17. At the same time, when the glass is placed on the U-shaped lower mold 13, the pressure plate 19 applies a certain pressure to the glass under the action of the spring 20, which achieves the effect of elastic fixing. This elastic fixing method can not only stabilize the glass and prevent it from shifting during the rotation of the turntable 12 or hot bending, but also provide a certain buffer space when the glass undergoes slight deformation due to thermal expansion and contraction, ensuring the stability and reliability of the glass fixing.
[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A hot bending forming device for coated curved glass, comprising a support frame (1), characterized in that: The support frame (1) is fixedly connected to the top of the fixed frame (2), the fixed frame (2) is fixedly connected to the inside of the fixed frame (2), the guide column (3) is slidably connected to the outer wall of the guide column (3) and the electric push rod (5) is fixedly connected to the top of the fixed frame (2), the output end of the electric push rod (5) is fixedly connected to the transmission block (6), the bottom of the transmission block (6) is fixedly connected to the top of the slide (4), the bottom of the slide (4) is fixedly connected to the U-shaped upper mold (7), the fixed frame (2) is provided with a rotating component, and the slide (4) is provided with a limit component inside; The rotating assembly includes a turntable (12), which is rotatably connected to the top of the fixed frame (2). A motor (11) is fixedly connected to the bottom of the fixed frame (2). The output end of the motor (11) is connected to the turntable (12). A U-shaped lower mold (13) is fixedly connected to the top of the turntable (12).
2. The hot bending forming apparatus for coated curved glass according to claim 1, characterized in that: A cylinder (8) is fixedly connected to one side of the support frame (1), and a connecting frame (9) is fixedly connected to the output end of the cylinder (8). A heater (10) is fixedly connected to one end of the connecting frame (9), and the heater (10) is located outside the turntable (12).
3. The hot bending forming apparatus for coated curved glass according to claim 1, characterized in that: The limiting assembly includes a second cylinder (14) and a baffle (15). The outer wall of the second cylinder (14) is fixedly connected to the inside of the slide (4), and one side of the baffle (15) is fixedly connected to the output end of the second cylinder (14).
4. The hot bending forming apparatus for coated curved glass according to claim 3, characterized in that: The U-shaped lower mold (13) is fixedly connected to a fixing rod (16) on its side wall, and a sliding column (17) is slidably connected inside the fixing rod (16).
5. The hot bending forming apparatus for coated curved glass according to claim 4, characterized in that: A retaining ring (18) is fixedly connected to the outer wall of the sliding column (17), and the retaining ring (18) is in contact with the fixed rod (16).
6. The hot bending forming apparatus for coated curved glass according to claim 5, characterized in that: A spring (20) is fitted on the outer wall of the sliding column (17), and one end of the spring (20) is fixedly connected inside the fixed rod (16).
7. The hot bending forming apparatus for coated curved glass according to claim 6, characterized in that: The bottom end of the sliding column (17) is fixedly connected to a pressure plate (19), and the other end of the spring (20) is fixedly connected inside the pressure plate (19).