TWI710532B - 3d glass forming device and method of forming 3d glass - Google Patents

Abstract

A 3D glass forming device is provided in the present application. The 3D glass forming device includes a carrier and a heater disposed corresponding to the carrier. The carrier includes a base and a module disposed on the base, wherein the surface of the module has at least one curve region. The heater includes a heating base and at least two heating units disposed on the surface of the heating base, wherein the temperature of each of the heating units can be adjusted independently. At least one of the heating units is corresponding to the curved region, and at least another one of the heating units is not corresponding to the curved region.

Description

3D glass forming device and method for forming 3D glass

The present invention relates to a 3-dimentional (3D) glass forming device and a method for forming 3D glass, in particular to a 3D glass forming device with an independent heating unit and a related method for forming 3D glass.

3D glass is widely used in the field of optoelectronics and electronic devices because of its shape that can be designed according to the application environment. However, since the application of 3D glass can be expanded to the fields of instrument panels, control panels, audio-visual navigation panels, etc., the demand for large-sized or multi-curved 3D glass is gradually increasing.

The invention provides a 3D glass forming device, which has a plurality of heating units that can independently adjust the temperature and a design that can be tilted in any direction. Therefore, the 3D glass forming device can provide a simpler manufacturing process for 3D glass with a larger size or with multiple curved surfaces. The present invention also provides a method for forming 3D glass, which utilizes zone heating and tilting the glass to change the relative gravity direction to achieve the desired shape of the glass.

In some embodiments, the present invention provides a 3D glass forming device. 3D glass forming The device includes a carrier and a heater corresponding to the carrier. The carrier includes a carrier board and a mold arranged on the carrier board, wherein the surface of the mold has at least one curved surface area. The heater includes a heating carrier and at least two heating units, which are arranged on the surface of the heating carrier, wherein each of the heating units can independently adjust the temperature. At least one of the heating units corresponds to a curved surface area, and at least another of the heating units does not correspond to a curved surface area.

In some embodiments, the present invention provides a 3D glass forming method, the method includes: providing the above 3D glass forming device, providing a glass set on the mold of the 3D glass forming device, and then setting the heating unit corresponding to the curved surface The temperature of at least one heating unit in the area is adjusted to a first temperature, and the temperature of at least another heating unit in the heating unit that does not correspond to the curved area is adjusted to a second temperature, where the first temperature can soften the glass, And the second temperature is lower than the first temperature.

The 3D glass forming method of the present invention includes providing a 3D glass forming device with a heating unit that can be separately controlled, so that only a part of the glass to be processed can be heated, while other parts of the glass can be maintained at a lower temperature. This improves the processing effect and saves production costs. In addition, since the 3D glass forming device of the present invention can be tilted to change the influence of gravity on the glass, and the weight of the glass itself generates pressure on the glass, it can reduce the need for additional pressure sources compared to the traditional manufacturing process.

100: 3D glass forming device

102: carrier board

102a: lower surface

104: Mould

106: Stage

108: Heating carrier board

110, 110-1~110-9: heating unit

112: heater

114: glass

1141, 1142: curved surface

120: gravity direction adjustment unit

600: method

602, 604, 606, 608: steps

CR, CR1, CR2: surface area

GP: Gravity direction

NL: Normal

T1: first temperature

T2: second temperature

X, Y, Z: direction

α: included angle

θ: tilt angle

FIG. 1 is a schematic cross-sectional view of a 3D glass forming device according to a first embodiment of the present invention.

Figure 2 is a schematic bottom view of the heater of the first embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of the 3D glass forming apparatus in an inclined state according to the first embodiment of the present invention.

4 to 7 are schematic diagrams of the 3D glass forming process according to the second embodiment of the present invention.

Fig. 8 is a flowchart of the 3D glass forming process according to the second embodiment of the present invention.

Fig. 9 is a schematic cross-sectional view of a 3D glass forming apparatus according to a modified embodiment of the present invention.

Figure 10 is a schematic bottom view of a heater according to a modified embodiment of the present invention.

This disclosure can be understood by referring to the following detailed description in conjunction with the accompanying drawings. It should be noted that, in order to make the readers easy to understand and for the simplicity of the diagrams, the multiple diagrams in this disclosure only depict the 3D glass forming device. Part of it, and the specific elements in the drawing are not drawn according to actual scale. In addition, the number and size of each element in the figure are only for illustration, and are not used to limit the scope of the disclosure.

Throughout the disclosure and the appended claims, certain words are used to refer to specific elements. Those skilled in the art should understand that manufacturers may refer to the same components by different names. This article does not intend to distinguish those elements with the same function but different names.

In the following description and claims, the words "containing" and "including" are open-ended words, so they should be interpreted as meaning "containing but not limited to...".

It should be understood that the following embodiments can be substituted, reorganized, and mixed to complete other embodiments without departing from the spirit of the present disclosure.

Please refer to Figure 1. Figure 1 is a schematic cross-sectional view of a 3D glass forming apparatus according to a first embodiment of the present invention. As shown in FIG. 1, the 3D glass forming apparatus 100 includes a stage 106, wherein the stage 106 includes a carrier plate 102 and a mold 104. According to this embodiment, the carrier 102 in the carrier 106 may include any settable The carrier of the mold 104 is set, and the mold 104 may include a metal material, a graphite material, a gypsum material, other suitable materials, or a combination of the foregoing materials, and the present invention is not limited thereto. The carrier 102 shown in Fig. 1 is a flat carrier having a surface substantially parallel to the X-Y plane. In the present invention, the mold 104 may include at least one curved area. For example, as shown in Figure 1, the mold 104 of the 3D glass forming apparatus 100 has two curved areas CR1 and CR2, wherein the curved area CR1 and the curved area The radius of curvature of CR2 may be different from each other. For example, the radius of curvature of the curved area CR1 may be greater than the radius of curvature of the curved area CR2, but it is not limited thereto. It should be noted that the shape design of the mold 104 in this embodiment can determine the shape of the 3D glass formed in the subsequent manufacturing process. Therefore, the shape of the mold 104 in Figure 1 is only exemplary, and the present invention is not limited thereto. That is to say, in other embodiments, the mold 104 may have different shapes according to the requirements of different 3D glass shapes. Therefore, the mold 104 may have one, two or more curved areas, and each curved area has different shapes. The radii of curvature can be the same or different from each other, depending on requirements.

In addition to the above-mentioned elements, the 3D glass forming apparatus 100 in this embodiment further includes a heater 112 corresponding to the carrier 106. The heater 112 includes a heating carrier 108 and a plurality of heating units 110 (that is, at least two A heating unit 110), wherein the heating unit 110 can be arranged on the surface of the heating carrier 108, but not limited to this. According to this embodiment, the heating unit 110 in the heater 112 can be, for example, a heating plate, a heating coil, other suitable heating units, or a combination of the above, and the heating carrier 108 can include any carrier that can be used to set the heating unit 110, wherein The heating carrier 108 may be provided with a control unit (not shown in Figure 1) for controlling the temperature of the heating unit 110, for example, and the present invention is not limited thereto. According to the present invention, when the 3D glass forming apparatus 100 is in use, each heating unit 110 can have different temperatures, that is, each of the heating units 110 can independently adjust the temperature, for example, the temperature can be adjusted by heating the carrier 108 Different control units control the temperature of each heating unit 110, but not limited to this. Moreover, when the mold 104 has only one curved area, at least one of the heating units 110 may correspond to the curved area of the mold 104, and at least another of the heating units 110 may not correspond to the curved area of the mold 104, or Moreover, when the mold 104 has more than two curved areas (ie, two or more curved areas), different curved areas may correspond to at least one different heating unit 110, and different curved areas may have the same or different The radius of curvature, but not limited to this. In detail, taking the 3D glass forming apparatus 100 shown in Fig. 1 as an example, nine heating units 110 (ie heating units 110-1 to 110-9) are provided on the heating carrier 108 of the 3D glass forming apparatus 100. The heating units 110-1 to 110-3 may correspond to the curved area CR2 of the mold 104, and the heating units 110-4 to 110-9 may correspond to the curved area CR1 of the mold 104, but not limited to this. Therefore, the 3D glass forming apparatus 100 can adjust the temperature of the heating units 110-1 to 110-3 according to the process requirements, thereby changing the temperature of the curved area CR2. Similarly, the heating units 110-4 to 110- can be adjusted according to the process requirements. 9 to control the temperature of the curved area CR1. In other words, since the heating units 110-1 to 110-9 can independently adjust the temperature, the curved area CR1 and the curved area CR2 of the mold 104 can be provided with different heating temperatures. It should be noted that the temperature of the above-mentioned curved area can be, for example, the temperature of a part of the glass corresponding to the curved area after the glass is placed on the mold 104, that is, when the glass is placed on the mold 104, different parts of the glass It can correspond to different curved areas of the mold 104, that is, different parts of the glass correspond to different heating units 110, and then be provided with different heating temperatures, but it is not limited to this.

In addition to the above-mentioned components, the 3D glass forming apparatus 100 in this embodiment can optionally include a gravity direction adjustment unit 120 connected to the heating carrier 108 and/and the carrier 102, wherein the gravity direction adjustment unit 120 can enable 3D The glass forming apparatus 100 is inclined to adjust the direction of gravity relative to the 3D glass forming apparatus 100. The content that the gravity direction adjusting unit 120 causes the 3D glass forming apparatus 100 to tilt will be described below. It should be noted that the location of the gravity direction adjusting unit 120 in Fig. 1 and the following Figs. 3-7 and 9 is only for illustration, and the present invention is not limited thereto.

Please refer to Figure 2, which is a bottom view of the heater according to the first embodiment of the present invention. As shown in Figure 2, the heater 112 may include multiple rows of heating units 110, that is, the heating units 110 can be arranged side by side along the X and Y directions at the same time, and the mold (not shown in Figure 2) is in the X direction. The and Y directions may include a plurality of side-by-side curved areas, corresponding to at least one heating unit 110 respectively. For example, the heater 112 in FIG. 2 includes four rows of heating units 110, and each row of heating units 110 includes nine heating units 110 (as shown in FIG. 1), but it is not limited thereto. It should be noted that the number and arrangement of the heating units 110 in Figure 2 are only exemplary, and the present invention is not limited thereto. In some embodiments, the number of heating units 110 can be more or less than nine according to requirements, or the number of rows of heating units 110 can be more or less than four. Furthermore, although the shape of the heating unit 110 in Figure 2 is square, the shape and size of the heating unit 110 in the present invention are not limited to this. For example, the shape of the heating unit 110 can be square, round or other suitable shapes, and the size (or the area of the heating unit 110) of each heating unit 110 can be the same or different from each other, and the present invention does not This is limited.

Please refer to FIG. 3, which is a schematic cross-sectional view of the 3D glass forming apparatus in an inclined state according to the first embodiment of the present invention. According to this embodiment, the 3D glass forming apparatus 100 can be tilted relative to the horizontal plane (XY direction) in any direction and any angle. For example, as shown in FIG. 3, the gravity direction adjusting unit 120 can control the 3D glass forming apparatus 100 , The 3D glass forming device 100 is tilted with respect to the XY plane in the Z direction. The tilt angle of the 3D glass forming device 100 can be, for example, the inclination angle θ shown in FIG. 3, such as the lower surface 102a of the carrier 102 and the horizontal The included angle of is defined as the inclination angle θ, but not limited to this. The range of the inclination angle θ may be, for example, between 0 degrees and 90 degrees, but is not limited to this. According to this embodiment, since the 3D glass forming apparatus 100 can be tilted, the angle of the gravity direction (that is, opposite to the Z direction) relative to the mold 104 (or curved area) can be adjusted, or in other words, when the glass is placed on the mold 104 During the processing process, the 3D glass forming apparatus 100 can be tilted to adjust the angle of the direction of gravity relative to the glass, so as to adjust the pressure on each part of the glass, but it is not limited to this. It should be noted that although the 3D glass forming apparatus 100 in FIG. 3 is tilted downward on the right side, it can be regarded as the carrier of the 3D glass forming apparatus 100 The plate 102 rotates and tilts in a clockwise direction, but the present invention is not limited to this. The tilt direction of the 3D glass forming apparatus 100 can also be the opposite direction or any surface, for example, the carrier plate 102 is rotated counterclockwise to tilt.

In summary, the present invention provides a 3D glass forming device. Different regions of the mold of the 3D glass forming device can correspond to different heating units, and each of the heating units can independently adjust the temperature. Therefore, different regions of the mold can have different temperatures, so that different parts of the glass placed on the mold can also independently adjust the temperature. In addition, since the 3D glass forming device of the present invention can be tilted in any direction and any angle, the angle of the gravity direction relative to the glass can be adjusted. When the glass 114 is placed on the mold 104, the glass can be adjusted by the tilt angle. Part of the gravity pressure.

The 3D glass forming method will be described in detail below. In order to simplify the description, the same elements in the following embodiments will be marked with the same symbols, and repeated features will not be repeated.

Please refer to Figures 4 to 8. Figures 4 to 7 are schematic diagrams of the 3D glass forming process according to the second embodiment of the present invention, and Figure 8 is a flowchart of the 3D glass forming process according to the second embodiment of the present invention . As shown in FIG. 8, the 3D glass forming method 600 first includes step 602 of providing a 3D glass forming device, where the 3D glass forming device can refer to the content in the above-mentioned first embodiment, so it will not be repeated here. Next, proceed to step 604 to set the glass 114 on the mold 104 of the 3D glass forming apparatus 100. The glass 114 may be, for example, the glass to be processed. Therefore, the glass 114 may not fit the curved area of the mold 104 (for example, the curved area). CR1 and the curved area CR2), as shown in Figure 4, but not limited to this. Next, proceed to step 606 to adjust the temperature of at least one heating unit corresponding to one of the curved areas to the first temperature, and adjust the temperature of other heating units not corresponding to the curved area to the second temperature. For example, as shown in Figure 5, the heating units corresponding to the curved area CR2 (ie heating units 110-1 to 110-1 to The temperature of 110-3) is adjusted to the first temperature T1, and the temperature of the heating units 110-4 to 110-9 that do not correspond to the curved area CR2 is adjusted to the second temperature T2. According to this embodiment, the first temperature T1 can cause the glass 114 to soften and deform, and the second temperature T2 can be less than the first temperature T1. In some embodiments, the first temperature T1 can be greater than or equal to the type of glass to be processed The glass softening temperature (for example, the softening temperature of glass 114) is less than the melting point of the glass (that is, the range of the first temperature T1 is from the glass softening temperature to the melting point of the glass), so that it is softened without melting It has plasticity, and the second temperature T2 can be lower than the softening temperature of the glass to be processed, for example, can be slightly lower than the first temperature T1 (for example, slightly lower than the first temperature 50°C, 100°C, 150°C or 200°C) temperature. For example, the first temperature T1 may range from 600° C. to 900° C., where the first temperature T1 may be determined according to the type of glass material. For example, when the material of the glass 114 is soda lime glass, the first temperature T1 can be greater than 600°C, and the second temperature T2 can be, for example, less than 600°C; when the material of the glass 114 is aluminosilicate glass, the range of the first temperature T1 It can be from 700°C to 900°C, and the second temperature T2 can be, for example, less than 700°C, but not limited to this. It should be noted that the above-mentioned ranges of the first temperature T1 and the second temperature T2 are only exemplary, and the present invention is not limited thereto. Since the value of the second temperature T2 in this embodiment is slightly smaller than the first temperature T1, it can prevent the part of the glass corresponding to the heating temperature of the second temperature T2 (that is, a part of the unprocessed glass) from producing pitting or unnecessary Because the value of the second temperature T2 is only slightly smaller than the first temperature T1, it can reduce the chance of glass cracking or damage due to the large temperature difference of different parts, but it is not limited to this. Since the temperature of the heating units 110-1 to 110-3 is adjusted to the first temperature T1 of the softenable glass 114, the portion of the glass 114 corresponding to the heating units 110-1 to 110-3 will be softened, and due to the heating unit The temperature of 110-4 to 110-9 is adjusted to a second temperature T2 lower than the softening temperature of the glass 114, so the portion of the glass 114 corresponding to the heating units 110-4 to 110-9 does not soften. After a part of the glass 114 is softened, the part may sag to join the surface of the mold 104 due to the direction of gravity, resulting in a desired curvature and curved surface. However, in some cases, if the curved surface to be formed is closer to the periphery of the glass 114 and/or the radius of curvature of the curved surface is too small, the gravity of the glass 114 in this part may not be sufficient to effectively fit the curved surface of the mold 104 Area (e.g. curved area CR2), at this time, step 608 can be optionally performed to tilt the 3D glass forming apparatus 100 and change the angle of the gravity direction relative to the glass 114. For example, as shown in FIG. 5, the 3D glass forming apparatus 100 can be tilted clockwise (as shown by the arrow) by the gravity direction adjustment unit 120 to have a tilt angle θ, so that the gravity direction GP is relative to the carrier board The normal line NL of 102 has an included angle α, and a part of the glass 114 corresponding to the curved area CR2 has a greater pressure due to the change in the weight it bears. In detail, when the 3D glass forming apparatus 100 is not tilted, the pressure on a part of the glass 114 corresponding to the curved area CR2 comes from the weight of the part itself. However, when the 3D glass forming apparatus 100 is tilted, it corresponds to the curved surface. The pressure on a part of the glass 114 in the area CR2 may include its own weight and the weight of the other part of the glass 114 above. Therefore, the pressure of the glass 114 in this part can be increased and the part of the glass 114 located on the outer side can be The curved area CR2 of the mold 104 is more efficiently attached to form a curved surface 1141 with a smaller radius of curvature. In detail, as shown in FIG. 5, since the partial glass 114 corresponding to the heating units 110-1 to 110-3 (that is, corresponding to the curved area CR2) can be provided by the heating units 110-1 to 110-3. The temperature T1 softens, but the part of the glass 114 corresponding to the heating units 110-4 to 110-9 does not soften, and when the 3D glass forming apparatus 100 is tilted as shown in Fig. 5, the part of the glass 114 corresponding to the curved area CR2 It can also be affected by the gravity of other unsoftened parts of the glass. Therefore, the part of the glass 114 corresponding to the curved area CR2 can be effectively attached to the curved area CR2 of the mold 104, thereby completing the processing of this part of the glass 114 to form a curved surface 1141 . After completing the processing of the curved surface 1141, step 606 may be repeated to process another part of the glass 114 corresponding to the curved surface area CR1. For example, as shown in Figure 6, the temperature of the heating units 110-4 to 110-9 can be adjusted to a first temperature T1, and the temperature of the heating units 110-1 to 110-3 can be adjusted to a second temperature T2 , The part of the glass 114 corresponding to the curved area CR1 is softened and hangs down to fit the curved area CR1 to form a curved surface 1142, as shown in FIG. It should be noted that although the step of forming the curved surface 1142 shown in Figure 7 does not include rotating the 3D glass forming device 100, step 608 can be selectively performed as required, for example, the gravity direction adjustment unit 120 is used to form the 3D glass forming device. 100 rotates and tilts in a counterclockwise direction so that the glass 114 corresponding to the heating units 110-4 to 110-9 Part of the pressure is increased, and make it fit to the curved area CR1. It should be noted that the inclination direction and angle of the 3D glass forming device 100 in step 608 is to make the part of the glass to be processed can withstand greater pressure and fit the mold, so it can have different inclination directions according to design requirements And the angle, for example, the 3D glass forming device can be tilted toward the direction in which the part of the glass to be processed is located so that it can withstand greater pressure. For example, when the curved area corresponding to a part of the glass 114 to be processed has a larger radius of curvature and/or a larger area (the area here can be regarded as a curved area on the XY plane or the carrier 102 Is not limited to this), because a part of the glass 114 corresponding to the curved area may itself have a relatively large weight, it is not necessary to tilt the 3D glass forming device 100 or to set the tilt angle during processing. θ is zero degrees, and when the curved area corresponding to a portion of the glass 114 to be processed has a smaller radius of curvature and/or a smaller area, the 3D glass forming device 100 can be tilted, or 3D glass forming can be added as needed The inclination angle θ of the device 100 increases the gravitational pressure on the part of the glass 114 to accelerate the curved surface forming speed or effectively form the curved surface, but is not limited to this. In addition, although in the above embodiment, step 606 is performed to adjust the temperature of the heating unit and then step 608 is performed to change the tilt angle, the present invention is not limited to this. In some embodiments, step 606 can be performed after step 608, or step 606 and step 608 can be performed simultaneously. Furthermore, when the glass 114 is processed to have more than three curved surfaces, that is, when the mold 104 has more than three curved surfaces, step 606 can be repeated, or step 606 and step 608 can be repeated, respectively. The corresponding portions of the glass 114 are heated and softened to form corresponding curved surfaces.

Although in the above-mentioned embodiment, the glass corresponding to the curved area CR2 is processed first, but the present invention is not limited to this. In some embodiments, the glass corresponding to the curved area CR1 may be processed first, and then the glass corresponding to the curved area CR2 may be processed, or, in some embodiments, when the mold has more than two curved areas, The processing can be carried out in any order according to requirements, and the processing method can refer to the above content, so it will not be repeated.

Please refer to FIGS. 9 and 10. FIG. 9 is a schematic cross-sectional view of a 3D glass forming apparatus according to a modified embodiment of the present invention, and FIG. 10 is a schematic bottom view of a heater according to a modified embodiment of the present invention. According to this modified embodiment, the heater 112 of the 3D glass forming apparatus 100 may only include two heating units 110 (as shown in FIG. 10), and the two heating units 110 can independently adjust the temperature. In addition, the mold 104 of the 3D glass forming apparatus 100 may include a curved portion CR, wherein the curved portion CR may correspond to the two heating units 110 of the heater 112, but is not limited to this. Similarly, the 3D glass forming device 100 of this modified embodiment can be tilted to change the direction of gravity relative to the device, so that the glass can withstand greater pressure to fit the mold to form 3D glass, but it is not limited to this. .

In summary, the 3D glass forming method of the present invention includes providing a 3D glass forming device with a heating unit that can be separately controlled, so that only a part of the glass to be processed can be heated, while other parts of the glass can be maintained. At a lower temperature, thereby increasing the influence of gravity on the glass portion to be processed when the device is tilted. In addition, in the traditional 3D glass processing process, additional pressure is generally required to make the softened glass fit the mold. However, since the 3D glass forming device of the present invention can be tilted to change the influence of gravity on the glass, the weight of the glass itself generates pressure on the glass, so compared to the traditional manufacturing process, the need for additional pressure sources can be reduced, and it can still be effective Form the desired glass curved surface. Furthermore, since the 3D glass forming device provided by the present invention can achieve the curvature requirements of each curved surface area by means of zone heating, tilting the device, and changing the influence of gravity, the 3D glass forming device of the present invention can be applied to multiple curvatures or In order to simplify the manufacturing process of large-size 3D glass.

The foregoing descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

100: 3D glass forming device

102: carrier board

102a: lower surface

104: Mould

106: Stage

108: Heating carrier board

110, 110-1~110-9: heating unit

112: heater

120: gravity direction adjustment unit

CR1, CR2: surface area

X, Y, Z: direction

θ: tilt angle

Claims (14)

A 3D glass forming device includes: a carrier, including: a carrier; and a mold arranged on the carrier, wherein the surface of the mold has at least one curved area; and a heater arranged corresponding to the carrier, It includes: a heating carrier board; and at least two heating units arranged on the surface of the heating carrier board, wherein each of the heating units can independently adjust the temperature; wherein at least one of the heating units corresponds to the curved surface area , And at least another of the heating units does not correspond to the curved area, and the 3D glass forming device can be tilted on a horizontal surface in any direction and at any angle. The 3D glass forming device according to claim 1, wherein the 3D glass forming device further includes a gravity direction adjustment unit to control the tilt of the 3D glass forming device. The 3D glass forming device according to claim 1, wherein the heating units include heating plates, heating coils or a combination of the foregoing materials. The 3D glass molding device according to claim 1, wherein the mold includes a metal material, a graphite material, a gypsum material, or a combination of the foregoing materials. The 3D glass forming device according to claim 1, wherein the mold includes at least two curved areas Domains, and the curved surfaces have different radii of curvature and correspond to different heating units. A method of forming 3D glass, comprising the following steps: (a) providing a 3D glass forming device as described in claim 1; (b) providing a glass to be set on the mold of the 3D glass forming device; (c) placing The temperature of the at least one heating unit in the heating units corresponding to the curved area is adjusted to a first temperature, and the temperature of the at least another heating unit in the heating units that does not correspond to the curved area is adjusted to a first temperature. A second temperature, where the first temperature can soften the glass, and the second temperature is lower than the first temperature; and (d) tilt the 3D glass forming device to adjust the angle of the direction of gravity relative to the glass to A part of the glass corresponding to the curved surface area is softened by the at least one heating unit and is at least partially attached to the mold under the influence of gravity. The method for forming 3D glass according to claim 6, wherein the mold includes at least two curved areas, and the curved areas have different radii of curvature and correspond to different heating units, and for each of the curved areas One goes to step (c) separately. The method for forming 3D glass according to claim 6, wherein the first temperature is greater than or equal to the softening temperature of the glass, and the second temperature is less than the softening temperature of the glass. The method for forming 3D glass according to claim 6, wherein the first temperature ranges from 600°C to 900°C. The method for forming 3D glass according to claim 9, wherein when the glass is soda lime glass, the first temperature is greater than 600°C, and when the glass is aluminosilicate glass, the first temperature ranges from 700 ℃ to 900 ℃. The method for forming 3D glass according to claim 6, wherein when the glass is soda lime glass, the second temperature is less than 600°C, and when the glass is aluminosilicate glass, the second temperature is less than 700°C. The method for forming 3D glass according to claim 6, wherein the glass forming device can be tilted on a horizontal surface in any direction and any angle. The method for forming 3D glass according to claim 6, wherein the heating units include heating plates, heating coils, or a combination of the foregoing materials. The method for forming 3D glass according to claim 6, wherein the mold includes a metal material, a graphite material, a gypsum material, or a combination of the foregoing materials.

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