Automobile glass hot bending forming equipment

Abstract

The invention provides automobile glass hot bending forming equipment, which belongs to the technical field of glass hot bending equipment and comprises a bearing seat, a heat preservation box, a heating cover and an electric heating rod. Wherein a heat exchange pipe is installed on the inner wall of the heat preservation box, an oil storage unit and an oil pumping unit are installed on the outer side of the heat preservation box, the oil pumping unit is connected with the heat exchange pipe and the oil storage unit, and the oil pumping unit is configured to be capable of circularly conveying a heat exchange medium in the oil storage unit into the heat exchange pipe. According to the invention, the heat exchange tube is arranged in the heat insulation box, in the heating process, heat conducted to the side wall of the heat insulation box is absorbed by the heat exchange medium, the side wall of the heat insulation box is cooled, meanwhile, the temperature of the heat exchange medium is increased, the effect of storing waste heat is achieved, in the glass cooling process, the heat exchange medium in a high-temperature state can release heat outwards, and the heat exchange efficiency is improved. Therefore, the electric energy consumed by the electrical bar for maintaining the cooling speed is reduced, and the energy-saving effect is achieved.

Description

Technical Field

[0001] This invention belongs to the technical field of glass hot bending equipment, specifically referring to a hot bending forming equipment for automotive glass. Background Technology

[0002] Automotive glass hot bending is the process of shaping flat glass into curved surfaces that conform to the streamlined shape of a car body. First, the cut flat glass is placed into a mold of a specific shape and then fed into a glass hot bending furnace. When the glass is heated to its softening point, it naturally conforms to the curved shape of the mold under its own weight or applied pressure. Subsequently, through a strictly controlled annealing process, the internal stress of the glass is eliminated, and the required tempered strength is achieved.

[0003] Currently, glass hot bending furnaces still need to maintain a seal and use low-power heating during the cooling process after the glass is hot bent in order to precisely control the cooling rate of the glass and avoid the glass cooling too fast and affecting the annealing effect. This means that when a dual-station hot bending furnace is in operation, the second station can only start the hot bending process after the first station has completed the entire annealing cycle, which seriously limits the equipment utilization rate and overall production efficiency. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of the present invention is to provide an automotive glass hot bending forming equipment to at least partially solve the problems mentioned in the background art.

[0005] The technical solution adopted by this invention is as follows: This invention proposes an automotive glass hot bending forming equipment, comprising: The support base has a liftable insulated box on top of it; A heating cover is disposed above the insulation box, and multiple heating rods are installed inside the heating cover; The inner wall of the insulation box is equipped with heat exchange tubes, and the outer side of the insulation box is equipped with an oil storage unit and an oil pumping unit. The oil pumping unit is connected to the heat exchange tubes and the oil storage unit respectively, and the oil pumping unit is configured to circulate and pump the heat exchange medium in the oil storage unit to the heat exchange tubes. The top of the insulated box is rotatably connected to multiple flaps, and a drive motor is installed on one side of the flaps. The output shaft of the drive motor is connected to the flaps and is used to drive the flaps to rotate around their rotation axis so that the flaps can switch between an open state and a closed state.

[0006] Furthermore, the oil storage unit includes a first oil tank and a second oil tank, and the oil pumping unit is configured such that when the equipment is in a hot bending state, the heat exchange medium in the heat exchange tube flows back to the first oil tank, and when the equipment is in a cooling state, the heat exchange medium in the heat exchange tube flows back to the second oil tank.

[0007] Furthermore, the first fuel tank and the second fuel tank have the same volume.

[0008] Furthermore, the oil pumping unit includes an oil pumping pipe and an oil return pipe, which are respectively connected to the two ends of the heat exchange tube. The oil pumping unit also includes a delivery pump, the output end of which is connected to the oil pumping pipe, and the input end of which is connected to the oil storage unit.

[0009] Furthermore, the input end of the delivery pump is equipped with a suction three-way valve, and the delivery pump is connected to the first oil tank or the second oil tank through the suction three-way valve. The return oil pipe is equipped with a return oil three-way valve, and the return oil pipe is connected to the first oil tank and the second oil tank through the return oil three-way valve.

[0010] Furthermore, both the suction three-way valve and the return three-way valve are electrically operated three-way valves.

[0011] Furthermore, the inner wall of the insulation box is provided with a plurality of densely arranged heat exchange fins, which are connected to the heat exchange tube to increase the heat exchange area.

[0012] Furthermore, it includes a bracket, the top of which is equipped with a second hydraulic cylinder. The telescopic end of the second hydraulic cylinder is connected to the heating cover for driving the heating cover to rise and fall.

[0013] Furthermore, rails are provided on both sides of the support base, and the bracket is connected to the rails and can move along the rails.

[0014] Furthermore, a first hydraulic cylinder is installed on the outer side of the support base, and the telescopic end of the first hydraulic cylinder is connected to the insulation box for driving the insulation box to rise and fall.

[0015] Beneficial effects: 1. By installing heat exchange tubes inside the insulation box, the heat exchange medium absorbs the heat conducted to the side wall of the insulation box during the heating process, thereby cooling the side wall of the insulation box. At the same time, the temperature of the heat exchange medium rises, which plays a role in storing residual heat. During the cooling process of the glass, the heat exchange medium at high temperature can release heat to the outside, thereby reducing the electrical energy consumed by the heating rod to maintain the cooling rate, thus achieving the effect of energy saving.

[0016] 2. By installing a flap on the top of the heat exchange box, when the required cooling temperature is lower than the temperature provided by the heat exchange medium, the flap flips up and closes, using only the temperature released by the heat exchange medium to control the cooling rate of the glass. Then, the heating cover can be moved to the next station for hot bending heating of the glass, shortening the time for the heating cover to control the temperature during the glass cooling process and improving the production efficiency of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an automotive glass hot bending forming equipment according to an embodiment of the present invention; Figure 2 This is a schematic diagram showing the installation position of the heat exchanger tube in an automotive glass hot bending forming equipment according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of an automotive glass hot bending forming equipment in an open state, according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of the oil storage unit and the oil pumping unit in an automotive glass hot bending forming equipment according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a multi-station automotive glass hot bending forming equipment according to an embodiment of the present invention.

[0018] The components include: 1. Support base; 11. First oil cylinder; 2. Insulation box; 21. Heat exchange tube; 22. Heat exchange fins; 23. Flip plate; 24. Drive motor; 3. Heating cover; 31. Electric heating rod; 4. Support; 41. Second oil cylinder; 42. Track; 5. Oil storage unit; 51. First oil tank; 52. Second oil tank; 6. Oil pumping unit; 61. Oil pumping pipe; 62. Oil return pipe; 63. Transfer pump; 64. Oil suction three-way valve; 65. Oil return three-way valve.

[0019] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0021] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments.

[0022] Combination Figure 1 As shown, an embodiment of the present invention provides an automotive glass hot bending forming equipment, including a support 1, an insulation box 2, and a heating cover 3.

[0023] The heat preservation box 2 is positioned above the support base 1, and the heat preservation box 2 is a rectangular shell with openings at both the top and bottom and closed on all sides. The heating cover 3 is positioned above the heat preservation box 2, and multiple electric heating rods 31 are installed inside the heating cover 3.

[0024] The support base 1, the insulation box 2, and the heating cover 3 are separated from each other, that is, the support base 1 and the insulation box 2 can be separated from each other, and the insulation box 2 and the heating cover 3 can also be separated from each other.

[0025] Specifically, multiple first hydraulic cylinders 11 are installed on the outside of the support seat 1, and the telescopic end of the first hydraulic cylinder 11 is connected to the insulation box 2. The first hydraulic cylinder 11 is connected to an external hydraulic station, and the first hydraulic cylinder 11 can drive the insulation box 2 to rise and fall.

[0026] During the hot bending process, the support seat 1 and the heat preservation box 2 are first separated. Then, the mold is placed on the support seat 1, and the glass to be hot bent is installed on the mold. After installation, the heat preservation box 2 and the heating cover 3 are lowered, so that the support seat 1, the heat preservation box 2 and the heating cover 3 form a closed space. Multiple electric heating rods 31 in the heating cover 3 are used to heat the glass, so that the glass is heated and bent along the set shape of the mold. After bending is completed, the heat preservation box 2 is moved upward, and then the glass is taken out.

[0027] Combination Figure 2 and Figure 3 As shown, a heat exchange tube 21 is installed on the inner wall of the heat exchange box 2, and an oil storage unit 5 and an oil pumping unit 6 are installed on the outer side of the heat exchange box 2. The oil pumping unit 6 is connected to the heat exchange tube 21 and the oil storage unit 5 respectively. The oil pumping unit 6 is configured to circulate the heat exchange medium in the oil storage unit 5 to the heat exchange tube 21. When the multiple heating rods 31 in the heating cover 3 are heated, the heat exchange medium flowing in the heat exchange tube 21 can absorb the heat conducted to the side wall of the heat exchange box 2, cool the side wall of the heat exchange box 2, and at the same time, the temperature of the heat exchange medium rises, which plays the role of storing waste heat.

[0028] Furthermore, the top of the insulated box 2 is rotatably connected to multiple flaps 23, and a drive motor 24 is installed on one side of it. The output shaft of the drive motor 24 is connected to the flaps 23 to drive the flaps 23 to rotate around their rotation axis, so that the flaps 23 can switch between the open state and the closed state.

[0029] When the support 1, the insulation box 2, and the heating cover 3 form a closed space and heat the glass, the flip plate 23 is in the open state of flipping downwards. At this time, the electric heating rod 31 in the heating cover 3 can heat the glass inside the insulation box 2. After the heating is completed, the flip plate 23 can flip upwards to close, so that the top of the insulation box 2 is in a closed insulation state.

[0030] Thus, during use, the support base 1 and the insulation box 2 are first separated. Then, the mold is placed on the support base 1, and the glass to be heat-bent is installed on the mold. After installation, the insulation box 2 and the heating cover 3 are lowered, so that the support base 1, the insulation box 2, and the heating cover 3 form a closed space. The flap 23 is then opened, and multiple heating rods 31 inside the heating cover 3 heat the glass, causing it to bend along the set shape of the mold. During the heating process, the oil pump unit 6 circulates the heat exchange medium in the oil storage unit 5 to the oil exchanger. Inside the heat pipe 21, the heat exchange medium flowing inside the heat exchange pipe 21 can absorb the heat conducted to the side wall of the heat exchange box 2, cooling the side wall of the heat exchange box 2. At the same time, the temperature of the heat exchange medium rises, which plays a role in storing residual heat. After bending, the glass is slowly cooled. During the cooling process, the oil pump unit 6 delivers the heated heat exchange medium in the oil storage unit 5 back to the heat exchange pipe 21. At this time, the heat exchange medium at high temperature can release heat to the outside, thereby reducing the electrical energy consumed by the heating rod 31 to maintain the cooling rate, thus playing a role in energy saving.

[0031] When the required cooling temperature is lower than the temperature provided by the heat exchange medium, the flap 23 flips upward and closes, keeping the top of the insulation box 2 in a closed, insulated state. The cooling rate of the glass is controlled solely by the temperature released by the heat exchange medium. Then, the heating hood 3 can be moved to the next station for hot bending heating of the glass (e.g.,...). Figure 1 As shown in the figure, the time for the heating cover 3 to control the temperature during the glass cooling process is shortened, thereby improving the production efficiency of the equipment.

[0032] It should be noted that the inner wall of the heat exchange box 2 is provided with multiple densely arranged heat exchange fins 22, which are connected to the heat exchange tube 21, thereby increasing the heat exchange area.

[0033] Combination Figure 4 As shown, the oil storage unit 5 includes a first oil tank 51 and a second oil tank 52, and the oil pumping unit 6 is configured such that when the equipment is in a hot bending state, the heat exchange medium in the heat exchange tube 21 flows back to the first oil tank 51, and when the equipment is in a cooling state, the heat exchange medium in the heat exchange tube 21 flows back to the second oil tank 52.

[0034] In a specific embodiment, when the equipment is in a hot bending state, the oil suction end of the oil pump unit 6 is connected to the second oil tank 52, and the heat exchange medium in the second oil tank 52 is transported to the heat exchange tube 21. After absorbing heat, it flows back to the first oil tank 51. When the equipment is in a cooling state, the oil suction end of the oil pump unit 6 is connected to the first oil tank 51, and the high-temperature heat exchange medium in the first oil tank 51 is transported to the heat exchange tube 21 to release heat, and then flows back to the second oil tank 52. The first oil tank 51 and the second oil tank 52 are used to separate the heat exchange medium in the high-temperature state and the low-temperature state, so as to avoid the heat exchange medium of the two temperatures from neutralizing each other.

[0035] It should be noted that the first oil tank 51 and the second oil tank 52 have the same volume. When the heat exchange medium is switched between the first oil tank 51 and the second oil tank 52, both the first oil tank 51 and the second oil tank 52 have sufficient volume to store the heat exchange medium.

[0036] Furthermore, the oil pumping unit 6 includes an oil pumping pipe 61 and an oil return pipe 62, which are respectively connected to the two ends of the heat exchange tube 21. The oil pumping unit 6 also includes a delivery pump 63, the output end of which is connected to the oil pumping pipe 61, and the input end of which is connected to the oil storage unit 5. The input end of the delivery pump 63 is equipped with a suction three-way valve 64, and the delivery pump 63 is connected to the first oil tank 51 or the second oil tank 52 through the suction three-way valve 64. The oil return pipe 62 is equipped with a return three-way valve 65, and the oil return pipe 62 is connected to the first oil tank 51 and the second oil tank 52 through the return three-way valve 65.

[0037] Thus, when the equipment is in a hot bending state, the suction three-way valve 64 switches to connect with the second oil tank 52, and the delivery pump 63 delivers the heat exchange medium in the second oil tank 52 to the heat exchange tube 21. At the same time, the return three-way valve 65 switches to connect with the first oil tank 51. After absorbing heat, the heat exchange medium flows back to the first oil tank 51. When the equipment is in a cooling state, the suction three-way valve 64 switches to connect with the first oil tank 51, and the delivery pump 63 delivers the high-temperature heat exchange medium in the first oil tank 51 to the heat exchange tube 21. At the same time, the return three-way valve 65 switches to connect with the second oil tank 52, and the heat exchange medium that has released heat flows back to the second oil tank 52.

[0038] In an optional embodiment, both the suction three-way valve 64 and the return three-way valve 65 are electrically operated three-way valves.

[0039] Combination Figure 1 and Figure 5 As shown, it includes a bracket 4, and a second hydraulic cylinder 41 is installed at the top of the bracket 4. The telescopic end of the second hydraulic cylinder 41 is connected to the heating cover 3. The second hydraulic cylinder 41 is connected to an external hydraulic station, and the heating cover 3 can be driven to rise and fall through the second hydraulic cylinder 41.

[0040] Furthermore, both sides of the support 1 are provided with rails 42, and the bracket 4 is connected to the rails 42 and can move along the rails 42.

[0041] Thus, after the heating rod 31 on the heating cover 3 has completed the heat bending of the glass at one station, the second hydraulic cylinder 41 lifts the heating cover 3 upwards, so that it is removed from the insulation box 2 at that station. Then, the support 4 is moved along the track 42 to move the heating cover 3 directly above the insulation box 2 at the new station. The second hydraulic cylinder 41 lowers the heating cover 3 to heat the glass at that station.

[0042] The working principle of this invention is as follows: During use, the support base 1 and the insulation box 2 are first separated. Then, the mold is placed on the support base 1, and the glass to be heat-bent is installed on the mold. After installation, the insulation box 2 and the heating cover 3 are lowered, so that the support base 1, the insulation box 2, and the heating cover 3 form a closed space. The flap 23 is then opened, and multiple heating rods 31 inside the heating cover 3 heat the glass, causing it to bend along the set shape of the mold. During the heating process, the oil pump unit 6 circulates the heat exchange medium in the oil storage unit 5. The heat exchange medium flowing inside the heat exchange tube 21 absorbs the heat conducted to the side wall of the insulation box 2, cooling the side wall of the insulation box 2. At the same time, the temperature of the heat exchange medium rises, which serves to store residual heat. After bending, the glass is slowly cooled. During the cooling process, the oil pump unit 6 delivers the heated heat exchange medium in the oil storage unit 5 back to the heat exchange tube 21. At this time, the heat exchange medium at high temperature can release heat to the outside, thereby reducing the electrical energy consumed by the heating rod 31 to maintain the cooling rate, thus achieving energy saving.

[0043] In summary, by installing a heat exchange tube 21 inside the insulation box 2, during the heating process, the oil pump unit 6 circulates the heat exchange medium from the oil storage unit 5 to the heat exchange tube 21. The heat exchange medium absorbs the heat conducted to the side wall of the insulation box 2, thereby cooling the side wall of the insulation box 2. At the same time, the temperature of the heat exchange medium rises, which serves to store residual heat. During the glass cooling process, the heat exchange medium at high temperature can release heat to the outside, thereby reducing the electrical energy consumed by the heating rod 31 to maintain the cooling rate, thus achieving energy saving.

[0044] By installing a flap 23 on the top of the insulation box 2, when the required cooling temperature is lower than the temperature provided by the heat exchange medium, the flap 23 flips upward and closes, keeping the top of the insulation box 2 in a closed insulation state. The cooling rate of the glass is controlled solely by the temperature released by the heat exchange medium. Then, the heating hood 3 can be moved to the next station for hot bending heating of the glass (e.g., ...). Figure 1 As shown in the figure, the time for the heating cover 3 to control the temperature during the glass cooling process is shortened, thereby improving the production efficiency of the equipment.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A hot bending forming equipment for automotive glass, characterized in that, include: The support base (1) has an insulated box (2) that can be lifted and lowered on top of it. A heating cover (3) is set above the heat preservation box (2), and multiple electric heating rods (31) are installed inside the heating cover (3). The heat exchange tube (21) is installed on the inner wall of the heat insulation box (2), and an oil storage unit (5) and an oil pumping unit (6) are installed on the outer side of the heat insulation box (2). The oil pumping unit (6) is connected to the heat exchange tube (21) and the oil storage unit (5) respectively. The oil pumping unit (6) is configured to circulate and pump the heat exchange medium in the oil storage unit (5) into the heat exchange tube (21). The top of the heat preservation box (2) is rotatably connected to multiple flaps (23), and a drive motor (24) is installed on one side of it. The output shaft of the drive motor (24) is connected to the flaps (23) to drive the flaps (23) to rotate around their rotation axis so that the flaps (23) can switch between the open state and the closed state.

2. The automotive glass hot bending forming equipment according to claim 1, characterized in that: The oil storage unit (5) includes a first oil tank (51) and a second oil tank (52), and the oil pumping unit (6) is configured such that when the equipment is in a hot bending state, the heat exchange medium in the heat exchange tube (21) flows back to the first oil tank (51), and when the equipment is in a cooling state, the heat exchange medium in the heat exchange tube (21) flows back to the second oil tank (52).

3. The automotive glass hot bending forming equipment according to claim 2, characterized in that: The first oil tank (51) and the second oil tank (52) have the same volume.

4. The automotive glass hot bending forming equipment according to claim 2, characterized in that: The oil pumping unit (6) includes an oil pumping pipe (61) and an oil return pipe (62). The oil pumping pipe (61) and the oil return pipe (62) are respectively connected to the two ends of the heat exchange pipe (21). The oil pumping unit (6) also includes a delivery pump (63). The output end of the delivery pump (63) is connected to the oil pumping pipe (61), and the input end of the delivery pump (63) is connected to the oil storage unit (5).

5. The automotive glass hot bending forming equipment according to claim 4, characterized in that: The input end of the delivery pump (63) is provided with a suction three-way valve (64), and the delivery pump (63) is connected to the first oil tank (51) or the second oil tank (52) through the suction three-way valve (64). The return oil pipe (62) is provided with a return oil three-way valve (65), and the return oil pipe (62) is connected to the first oil tank (51) and the second oil tank (52) through the return oil three-way valve (65).

6. The automotive glass hot bending forming equipment according to claim 5, characterized in that: Both the suction three-way valve (64) and the return three-way valve (65) are electric three-way valves.

7. The automotive glass hot bending forming equipment according to claim 1, characterized in that: The inner wall of the heat exchange box (2) is provided with a number of densely arranged heat exchange fins (22), which are connected to the heat exchange tube (21) to increase the heat exchange area.

8. The automotive glass hot bending forming equipment according to claim 1, characterized in that: It includes a bracket (4), and a second oil cylinder (41) is installed at the top of the bracket (4). The telescopic end of the second oil cylinder (41) is connected to the heating cover (3) for driving the heating cover (3) to rise and fall.

9. The automotive glass hot bending forming equipment according to claim 8, characterized in that: The support (1) is provided with rails (42) on both sides, and the bracket (4) is connected to the rails (42) and can move along the rails (42).

10. The automotive glass hot bending forming equipment according to claim 1, characterized in that: A first hydraulic cylinder (11) is installed on the outside of the support seat (1), and the telescopic end of the first hydraulic cylinder (11) is connected to the heat preservation box (2) for driving the heat preservation box (2) to rise and fall.

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