Hot bending die for vehicle-mounted display cover plate

Abstract

The utility model discloses a hot bending mould for a vehicle-mounted display cover plate, which relates to the field of glass processing and comprises an upper mould, a cover plate to be hot-bent and a lower mould, a plurality of local heating pipes are arranged on the upper mould, and the cover plate to be hot-bent is arranged between the upper mould and the lower mould. The heating device is used for heating the whole to-be-hot-bent cover plate to about 400 DEG C, so that the glass is prevented from being exploded after local high temperature. After the overall temperature of the mold reaches 400 DEG C, the local heating pipe is started, the local heating pipe is used for heating the local part, needing to be bent, of the V shape to 600-700 DEG C in a local heating mode, and power consumption needed in the heating process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of glass processing, in particular to a hot bending mold for a vehicle-mounted display cover plate. Background Technique

[0002] With the popularization of vehicle-mounted display screens and the continuous development of technology, the appearance and performance requirements for display cover plates are also getting higher and higher. As an important processing tool, a hot bending mold can heat flat glass to the softening point and then, through the shaping effect of the mold, make it form a specific curved surface shape to meet the design requirements of vehicle-mounted display screens.

[0003] In the existing design of precision hot bending molds, the whole mold is heated to transfer heat to the bending cover plate and then pressurized to form. The bending part of the bending cover plate is heated to 600 degrees, while only 400 degrees is required for other places. The existing devices generally heat the whole bending cover plate to 600 degrees. The overall heating requires a long time to make the bending part of the bending cover plate reach the required temperature, which may lead to a reduction in heating efficiency and an increase in energy consumption. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hot bending mold for a vehicle-mounted display cover plate to solve the problems raised in the above background technique.

[0005] To solve the above technical problems, a hot bending mold for a vehicle-mounted display cover plate provided by the utility model includes an upper mold, a cover plate to be hot bent, and a lower mold. A plurality of local heating tubes are arranged on the upper mold, and the cover plate to be hot bent is arranged between the upper mold and the lower mold.

[0006] Furthermore, a cooling component is also included. The cooling component includes a water tank, a refrigeration sheet on the water tank, a water outlet pipe on one side of the water tank, a water pump on the outer wall of the water outlet pipe, a V-shaped frame at the other end of the water outlet pipe, and a water inlet pipe on the outer wall of the V-shaped frame. The water inlet pipe penetrates into the interior of the water tank.

[0007] Furthermore, one side of the refrigeration sheet extends to the outside of the water tank, and a heating device is arranged on the upper mold.

[0008] Furthermore, a support block is arranged on the inner wall of the lower mold, and the support block is arranged on the outer walls of the water outlet pipe and the water inlet pipe.

[0009] Furthermore, a bidirectional lead screw is rotatably connected to the inner wall of the lower mold, and two trapezoidal blocks are threadedly connected to the outer wall of the bidirectional lead screw. The trapezoidal blocks are symmetrically arranged.

[0010] Furthermore, a handle is arranged at one end of the bidirectional lead screw extending to the outside.

[0011] Furthermore, a plurality of reset springs are arranged between the V-shaped frame and the upper mold.

[0012] Further, a limiting rod is provided on the inner wall of the lower mold, and the two trapezoidal blocks are slidably connected to the outer wall of the limiting rod.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. In the present utility model, the heating device is used to first heat the overall heat-bending cover plate to about 400 °C to avoid cracking of the glass due to local high temperature. After the overall temperature of the mold reaches 400 °C, the local heating tube is started, and the local heating tube is used to locally heat the V-shaped part to be bent to 600 °C - 700 °C. By adopting local heating, the power consumption required during heating is reduced.

[0015] 2. In the present utility model, the V-shaped frame is lifted to fit the lower mold by using the bidirectional lead screw and the trapezoidal blocks, and the refrigerating sheet and the water pump are started to locally cool the bent part of the heat-bending cover plate in the V-shaped frame, realizing rapid cooling, so that the temperature at the bending position reaches about the surrounding temperature, and the cooling and discharging time is shortened. Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the internal structural schematic diagram of the present utility model;

[0018] Figure 3 is the side view of the internal structure of the present utility model;

[0019] Figure 4 is Figure 2 the enlarged structural view of part A in

[0020] Figure 5 is Figure 2 the enlarged structural view of part B in

[0021] In the figure: 1. Upper mold; 2. Local heating tube; 3. Heat-bending cover plate to be processed; 4. Lower mold;

[0022] 5. Cooling component; 501. Water tank; 502. Refrigerating sheet; 503. Water pump; 504. Water outlet pipe; 505. V-shaped frame; 506. Water inlet pipe;

[0023] 6. Support block; 7. Handle; 8. Bidirectional lead screw; 9. Trapezoidal block; 10. Return spring; 11. Limiting rod; 12. Heating device. Detailed Embodiment

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 - 5 , the present invention provides a technical solution:

[0026] Refer to Figures 1 - 5 As shown, a hot bending mold for a vehicle-mounted display cover plate includes an upper mold 1, a cover plate 3 to be hot bent, and a lower mold 4. A plurality of local heating tubes 2 are arranged on the upper mold 1, and the cover plate 3 to be hot bent is arranged between the upper mold 1 and the lower mold 4.

[0027] It should be noted that a storage battery is arranged on the outer wall of the upper mold 1, and the storage battery can provide power for the refrigerating sheet 502 and the refrigerating sheet 502.

[0028] First, use the heating device 12 to heat the whole cover plate 3 to be hot bent to about 400° to avoid cracking due to local high temperature of the glass. After the overall temperature of the mold reaches 400°, start the local heating tube 2 to locally heat the part that needs to be bent into a V shape to 600° - 700° by the local heating tube 2, which reduces the power consumption required during heating.

[0029] Refer to Figures 2 - 3 As shown, it further includes a cooling component 5. The cooling component 5 includes a water tank 501. The water tank 501 is fixedly installed on the outer wall of the lower mold 4. A refrigerating sheet 502 is fixedly installed on the water tank 501. A water outlet pipe 504 is fixedly installed on one side of the water tank 501. A water pump 503 is fixedly installed on the outer wall of the water outlet pipe 504. The water pump 503 is fixedly installed on the inner wall of the lower mold 4. The other end of the water outlet pipe 504 is fixedly installed with a V-shaped frame 505. An inlet pipe 506 is fixedly installed on the outer wall of the V-shaped frame 505, and the inlet pipe 506 penetrates into the interior of the water tank 501.

[0030] It should be noted that a heat insulation layer is arranged on the outer wall of the water pump 503 to prevent the heat of the cover plate 3 to be hot bent from being transferred to the water pump 503, so that the water pump 503 is damaged due to high temperature.

[0031] Then, the V-shaped frame 505 is lifted to fit against the inner top wall of the lower mold 4 by the mutual cooperation of the bidirectional lead screw 8 and the trapezoidal block 9. The switches of the Peltier cooler 502 and the water pump 503 are turned on. The Peltier cooler 502 cools the water inside the water tank 501, and the water pump 503 pumps the water in the water tank 501 and transports it through the water outlet pipe 504 to the inside of the V-shaped frame 505. The V-shaped frame 505 absorbs the heat at the bending position of the heat-bendable cover plate 3, realizing local cooling at the bending position. After absorbing heat inside the V-shaped frame 505, the water flows back to the inside of the water tank 501 through the water inlet pipe 506. After forming, the temperature at the bent position reaches about 400 degrees Celsius of the surrounding temperature, which can reduce the cooling and discharging time.

[0032] The switches of the Peltier cooler 502 and the water pump 503 and the control panel are arranged on the outer wall of the lower mold 4.

[0033] Refer to Figures 2 - 3 , one side of the Peltier cooler 502 extends to the outside of the water tank 501, and a heating device 12 is arranged on the upper mold 1.

[0034] During the refrigeration process, the Peltier cooler 502 generates heat. If the heat cannot be dissipated in time, it will affect the refrigeration effect and the service life of the equipment. Extending one side of the Peltier cooler 502 to the outside of the water tank 501 is beneficial to heat dissipation, ensuring the refrigeration efficiency and stability of the Peltier cooler 502.

[0035] Refer to Figures 2 - 3 , a support block 6 is fixedly installed on the inner wall of the lower mold 4, and the support block 6 is arranged on the outer walls of the water outlet pipe 504 and the water inlet pipe 506.

[0036] The support block 6 can effectively support the water outlet pipe 504 and the water inlet pipe 506, preventing them from shaking during the operation of the mold, thereby ensuring the stability of the water flow, which is relatively important for applications that require precise control of the water flow direction and flow rate.

[0037] Both the water outlet pipe 504 and the water inlet pipe 506 are stainless steel metal corrugated hoses, which are made of stainless steel and the outer layer is woven with stainless steel wires. Usually, they can withstand high temperatures of 400 °C and have good low-temperature resistance, withstanding -80 °C.

[0038] When setting the lower mold 4, the staff can set the middle part of the lower mold 4 to have a better heat conduction effect, which is the position where the bending position of the heat-bendable cover plate 3 needs to be received. Except for the middle position, the lower mold 4 has a better heat insulation effect, preventing the heat-bendable cover plate 3 from transferring heat to other parts inside the lower mold 4, resulting in component damage due to excessive heat.

[0039] Refer to Figures 2 - 3 , a bidirectional lead screw 8 is rotatably connected to the inner wall of the lower mold 4, and two trapezoidal blocks 9 are threadedly connected to the outer wall of the bidirectional lead screw 8. The trapezoidal blocks 9 are symmetrically arranged.

[0040] The threads on two sections of the bidirectional lead screw 8 at the two trapezoidal blocks 9 are opposite. When the bidirectional lead screw 8 is rotated, the two trapezoidal blocks 9 will move towards each other or away from each other. The return spring 10 supports the V-shaped frame 505, so that there is a certain gap between the V-shaped frame 505 and the upper mold 1. When it is necessary to locally cool the bent part of the heat-bendable cover plate 3, control the two trapezoidal blocks 9 to move towards each other, and the trapezoidal block 9 will lift the V-shaped frame 505 so that the V-shaped frame 505 is in contact with the bent part of the inner bottom wall of the lower mold 4.

[0041] Refer to Figures 2 - 3 One end of the bidirectional lead screw 8 extending to the outside is fixedly installed with a handle 7.

[0042] The handle 7 provides an intuitive and easy-to-operate grasping point for the user, enabling the user to more conveniently control and adjust the position and state of the bidirectional lead screw 8. Whether it is for precise fine-tuning or rapid rotation, the staff can achieve it through the handle 7.

[0043] Refer to Figures 2 - 3 A plurality of return springs 10 are fixedly installed between the V-shaped frame 505 and the upper mold 1.

[0044] If it is not necessary to locally cool the heat-bendable cover plate 3, make the two trapezoidal blocks 9 move away from each other on the bidirectional lead screw 8. The elastic force of the return spring 10 will pull the V-shaped frame 505 downward, so that the V-shaped frame 505 keeps a certain distance from the inner top wall of the lower mold 4. This can prevent the water in the V-shaped frame 505 from absorbing part of the heat when the local heating tube 2 locally heats the heat-bendable cover plate 3, so that the local heating tube 2 needs to increase the power or extend the heating time, which will increase the power consumption.

[0045] Refer to Figures 2 - 3 On the inner wall of the lower mold 4, a limiting rod 11 is fixedly installed, and the two trapezoidal blocks 9 are slidably connected to the outer wall of the limiting rod 11.

[0046] The limiting rod 11 provides a stable sliding track for the trapezoidal block 9, ensuring the linear movement of the trapezoidal block 9 on the inner wall of the lower mold 4, avoiding the deviation or shaking of the trapezoidal block 9 during the movement, and thus ensuring the stability and accuracy of the movement of the trapezoidal block 9.

[0047] Working principle: First, use the heating device 12 to heat the whole heat-bendable cover plate 3 to about 400 °C to avoid the glass cracking due to local high temperature. After the overall temperature of the mold reaches 400 °C, start the local heating tube 2 to locally heat the local part that needs to be bent of the V-shaped to 600 °C - 700 °C. By using local heating, the power consumption required during heating is reduced.

[0048] Then, the V-shaped frame 505 is lifted to fit against the inner top wall of the lower mold 4 by the mutual cooperation of the bidirectional lead screw 8 and the trapezoidal block 9. The switch of the Peltier cooler 502 and the water pump 503 is started. The Peltier cooler 502 cools the water inside the water tank 501, and the water pump 503 pumps the water in the water tank 501 and conveys it through the water outlet pipe 504 to the inside of the V-shaped frame 505. The V-shaped frame 505 absorbs the heat at the bending position of the to-be-thermoformed cover plate 3, realizing local cooling at the bending position. After absorbing heat inside the V-shaped frame 505, the water flows back to the inside of the water tank 501 through the water inlet pipe 506. After forming, the temperature at the bending position reaches about 400 degrees of the surrounding temperature, which can reduce the cooling and discharging time.

[0049] The switches of the Peltier cooler 502 and the water pump 503 and the control panel are arranged on the outer wall of the lower mold 4.

Claims

1. A hot bending mold for a vehicle-mounted display cover plate, comprising an upper mold (1), a cover plate to be hot bent (3), and a lower mold (4), characterized in that: A plurality of local heating tubes (2) are arranged on the upper mold (1), and a cover plate (3) to be hot-bent is arranged between the upper mold (1) and the lower mold (4).

2. A hot bending mold for a vehicle display cover according to claim 1, characterized in that: The cooling device also comprises a cooling component (5), wherein the cooling component (5) comprises a water tank (501), a refrigeration plate (502) on the water tank (501), a water outlet pipe (504) on one side of the water tank (501), a water pump (503) on the outer wall of the water outlet pipe (504), a V-shaped frame (505) at the other end of the water outlet pipe (504), and a water inlet pipe (506) on the outer wall of the V-shaped frame (505), wherein the water inlet pipe (506) penetrates into the interior of the water tank (501).

3. A hot bending mold for a vehicle display cover as claimed in claim 2, characterized in that: One side of the refrigeration fin (502) extends to the outside of the water tank (501), and a heating device (12) is provided on the upper mold (1).

4. A hot bending die for a vehicle display cover as claimed in claim 3, characterized in that: The inner wall support block (6) of the lower mold (4) is arranged on the outer wall of the water outlet pipe (504) and the water inlet pipe (506).

5. A hot bending mold for a vehicle display cover as claimed in claim 4, characterized in that: The inner wall of the lower mold (4) is rotatably connected to a bidirectional screw rod (8), and the outer wall of the bidirectional screw rod (8) is threadedly connected to two trapezoidal blocks (9), and the trapezoidal blocks (9) are symmetrically arranged.

6. A hot bending die for a vehicle display cover as claimed in claim 5, characterized in that: The bidirectional screw rod (8) extends to an external handle (7) at one end.

7. A hot bending mold for a vehicle display cover as claimed in claim 6, characterized in that: A plurality of return springs (10) are provided between the V-shaped frame (505) and the upper mold (1).

8. The hot bending mold for a vehicle display cover plate according to claim 7, characterized in that: An upper limit rod (11) is provided on the inner wall of the lower mold (4), and the two trapezoidal blocks (9) are slidably connected to the outer wall of the limit rod (11).

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