Glass rolling mill

Abstract

This utility model discloses a glass rolling mill, relating to the field of glass manufacturing. The glass rolling mill of this utility model has a front-to-back direction and includes a rolling device, a conveying device, and a temperature regulating device. The rolling device is used to roll out glass sheets; the conveying device is located in front of the rolling device; the temperature regulating device is located above the conveying device, and a transport space exists between the temperature regulating device and the conveying device; the glass sheets rolled out by the rolling device enter the transport space, and the conveying device is used to receive and forward transport the glass sheets located in the transport space; the temperature regulating device can adjust the temperature of a preset position in the transport space in a first direction, where the first direction, the vertical direction, and the front-to-back direction are all perpendicular to each other. The thickness adjustment device in this utility model embodiment can reduce the heat generated during the glass sheet thickness adjustment process.

Description

Technical Field

[0001] This utility model relates to the field of glass manufacturing, specifically to a glass rolling mill. Background Technology

[0002] In related technologies, glass rolling mills roll molten glass into glass sheets. During production, a temperature difference exists in the molten glass perpendicular to the discharge direction, resulting in variations in the thickness of the rolled glass sheets. Some technologies utilize edge torches to heat the cooler sections of the molten glass to adjust the thickness of the glass sheets and reduce these variations. However, using edge torches to heat the molten glass can easily lead to excessively high temperatures, causing overheating and affecting the quality of the produced glass sheets. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a glass rolling mill that can reduce the heat generated during the glass sheet thickness adjustment process.

[0004] A glass rolling mill according to a first aspect of the present invention has a front-to-back direction, comprising: A rolling mill is used to roll out glass sheets; The conveying device is located in front of the calendering device; A temperature regulating device is located above the conveying device, and there is a transport space between the temperature regulating device and the conveying device; the glass plate rolled out by the rolling device enters the transport space, and the conveying device is used to receive and transport the glass plate located in the transport space forward. The temperature regulating device can adjust the temperature of the transport space at a preset position in a first direction, wherein the first direction, the up-down direction, and the front-back direction are perpendicular to each other.

[0005] The glass rolling mill according to the embodiments of this utility model has at least the following beneficial effects: the glass sheet rolled by the rolling device can enter the transport space and be continuously transported forward by the conveying device. Since the temperature regulating device can adjust the temperature at different positions in the first direction of the transport space, the temperature of different parts of the glass in the first direction in the transport space will change, thereby further changing the thickness of different parts. By adjusting the temperature of the glass sheet at the front of the rolling device, the temperature regulating device adjusts the thickness of the glass at various points, which helps to reduce the possibility of glass overheating, reduce the risk of heat generation, thereby reducing the risk of heat generation sticking to the rollers and rolling, and thus improving the quality of the glass.

[0006] According to some embodiments of the present invention, the calendering device includes a driving member, a first support, a first calendering roll, and a second calendering roll; both the first calendering roll and the second calendering roll are rotatably connected to the first support, and the rotation axis of both the first calendering roll and the second calendering roll are parallel to the first direction; the driving member can drive the first calendering roll and / or the second calendering roll to rotate, so that the first calendering roll and the second calendering roll jointly roll out the glass plate.

[0007] According to some embodiments of the present invention, the temperature regulating device includes a first cooling component, which is capable of reducing the temperature of the transport space below and is located in the first direction between the middle of the first calendering roll and the first support.

[0008] According to some embodiments of the present invention, the calendering apparatus further includes a second support, wherein the first calendering roll is rotatably connected to the first support on one side in the first direction and rotatably connected to the second support on the other side, and the second calendering roll is rotatably connected to the first support on one side in the first direction and rotatably connected to the second support on the other side.

[0009] According to some embodiments of the present invention, the temperature regulating device includes a first cooling component and a second cooling component, both of which are capable of reducing the temperature of the transport space below; in the first direction, the first cooling component is located between the middle of the first calender roll and the first support, and the second cooling component is located between the middle of the first calender roll and the second support.

[0010] According to some embodiments of the present invention, the first cooling component includes a first air gun having a downward-facing first air outlet and capable of blowing air through the first air outlet; the second cooling component includes a second air gun having a downward-facing second air outlet and capable of blowing air through the second air outlet.

[0011] According to some embodiments of the present invention, the temperature regulating device includes a heating component capable of raising the temperature of the transport space below; in the first direction, the heating component is located between the first cooling component and the second cooling component.

[0012] According to some embodiments of the present invention, the heating component has a downward heating surface, and the heating component includes an electric heating wire that at least partially covers the heating surface.

[0013] According to some embodiments of the present invention, the conveying device includes a plurality of conveying rollers, the rotation axes of the plurality of conveying rollers are parallel to the first direction, the plurality of conveying rollers are arranged in a front-back direction, and are used to carry and convey the glass plate.

[0014] According to some embodiments of the present invention, the calendering apparatus includes a driving member, a first support, a first calendering roll, and a second calendering roll; both the first calendering roll and the second calendering roll are rotatably connected to the first support, and the rotation axes of the first calendering roll and the second calendering roll are parallel to the first direction; the driving member can drive the first calendering roll and / or the second calendering roll to rotate, so that the first calendering roll and the second calendering roll jointly roll out the glass plate; Along the first direction, both ends of each of the conveying rollers extend beyond the first calendering roller and the second calendering roller.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a side view of a glass rolling mill according to some embodiments of the present invention; Figure 2 This is an isometric view of a portion of the structure of a glass rolling mill according to some embodiments of this utility model; Figure 3 This is a top view of a glass rolling mill according to some embodiments of the present invention.

[0017] Figure label: 10g of molten glass and 20g of glass plate; The calendering apparatus 100, the drive unit 110, the first support 120, the second support 130, the first calendering roll 140, and the second calendering roll 150 are included. Conveying device 200, conveying roller 210; Temperature regulating device 300, first cooling component 310, first air gun 311, first air outlet 3111, second cooling component 320, second air gun 321, second air outlet 3211, heating component 330, heating surface 331, electric heating wire 332; Transportation space: 400. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Please refer to Figures 1 to 3 As shown, this utility model proposes a glass rolling machine. The glass rolling machine of this utility model has a front-to-back direction and also includes a rolling device 100, a conveying device 200 and a temperature regulating device 300.

[0024] Please refer to Figure 1As shown, the rolling device 100 of this utility model is used to roll out glass plates 20. By using the rolling device 100, molten glass 10 at a high temperature can be rolled into glass plates 20, and the formed glass plates 20 can be moved in the forward direction.

[0025] The conveying device 200 of this invention is located in front of the calendering device 100. The temperature regulating device 300 is located above the conveying device 200, and a transport space 400 exists between the temperature regulating device 300 and the conveying device 200. The glass sheet 20 rolled out by the calendering device 100 enters the transport space 400. The conveying device 200 receives and forward-conveys the glass sheet 20 located in the transport space 400. The temperature regulating device 300 can adjust the transport space 400 in a first direction (i.e., the first direction is...). Figure 2 , Figure 3 The temperature at a preset position in the left-right direction (with the first direction, the up-down direction, and the front-back direction being perpendicular to each other).

[0026] Through the above scheme, the glass sheet 20 rolled by the rolling mill 100 can enter the transport space 400 and be continuously transported forward by the conveying device 200. Since the temperature regulating device 300 can adjust the temperature at different positions in the first direction of the transport space 400, the temperature of different parts of the glass in the first direction in the transport space 400 will change, thereby further changing the thickness of different parts. By adjusting the temperature of the glass sheet 20 at the front of the rolling mill 100, the temperature regulating device 300 regulates the thickness of the glass at various points, which helps to reduce the possibility of glass overheating, reduce the risk of heat generation, thereby reducing the risk of heat generation sticking to the rollers and wrapping around the rollers, and thus improving the quality of the glass.

[0027] Specifically, the glass plate 20 formed by rolling is still at a relatively high temperature, and the glass still retains a certain degree of fluidity and viscosity. The lower-temperature portions of the glass plate 20 have higher viscosity and weaker fluidity, thus tending to accumulate more glass, resulting in a thicker glass plate 20 in these areas. Conversely, the higher-temperature portions of the glass plate 20 have lower viscosity and stronger fluidity, allowing some glass to easily flow to other areas, resulting in a thinner glass plate 20 in these areas. When adjusting the thickness of the glass plate 20 using the glass rolling mill of this invention, cooling the higher-temperature areas of the glass plate 20 reduces the fluidity of these areas, making them thicker. The cooled portions of the glass plate 20 have even lower temperatures, reducing the risk of overheating. Conversely, heating the lower-temperature areas of the glass plate 20 increases their fluidity, making them thinner. Since the temperature of the rolled glass plate 20 is lower than that of the molten glass 10, it is less likely to overheat when the glass plate 20 is heated, further reducing the risk of overheating.

[0028] Further, please refer to Figure 1 , Figure 2 , Figure 3 As shown, in some embodiments, the rolling apparatus 100 includes a drive member 110, a first support 120, a first rolling roll 140, and a second rolling roll 150. Both the first rolling roll 140 and the second rolling roll 150 are rotatably connected to the first support 120, and the rotation axes of the first rolling roll 140 and the second rolling roll 150 are parallel to a first direction. The drive member 110 can drive the first rolling roll 140 and / or the second rolling roll 150 to rotate, so that the first rolling roll 140 and the second rolling roll 150 jointly roll out the glass sheet 20. Through this scheme, the first rolling roll 140 and the second rolling roll 150 can maintain a distance from each other through their rotatable connection to the first support 120. The first rolling roll 140 and / or the second rolling roll 150 can drive the molten glass 10 into the space between the first rolling roll 140 and the second rolling roll 150, forming the glass sheet 20 through the continuous pressing and conveying by the first rolling roll 140 and the second rolling roll 150.

[0029] Further, please refer to Figure 2 , Figure 3 As shown, in some embodiments, the temperature regulating device 300 includes a first cooling component 310, which is capable of reducing the temperature of the transport space 400 below and is located in the first direction between the middle of the first calender roll 140 and the first support 120.

[0030] The first cooling assembly 310 lowers the temperature of the portion of the glass plate 20 located below the first cooling assembly 310 by reducing the temperature of the transport space 400 below it, thereby making the portion of the glass plate 20 located below the first cooling assembly 310 thicker. During the formation of the glass plate 20 by the rolling apparatus 100, the first rolling roll 140 and the second rolling roll 150 are subjected to the reaction force of the glass, resulting in local deformation. Since the first calendering roll 140 and the second calendering roll 150 are rotatably connected to the first support 120, the portion of the first calendering roll 140 connected to the first support 120 and the portion of the second calendering roll 150 connected to the first support 120 are subject to a stronger limiting effect from the first support 120, while the portion of the first calendering roll 140 and the portion of the second calendering roll 150 away from the first support 120 are subject to a weaker limiting effect from the first support 120. Therefore, the extrusion force exerted on the glass by the first calendering roll 140 and the second calendering roll 150 together will change in the first direction. The glass closer to the first support 120 will be thinner due to the stronger extrusion force from the first calendering roll 140 and the second calendering roll 150, while the glass farther from the first support 120 will be thicker due to the weaker extrusion force from the first calendering roll 140 and the second calendering roll 150. In the above embodiment, the first cooling component 310 is disposed between the middle of the first calendering roll 140 and the first support 120 in the first direction. The first cooling component 310 can increase the thickness of the portion of the glass plate 20 near the first support 120, which is beneficial to reduce the thickness difference between different portions of the glass plate 20 in the first direction.

[0031] Please refer to Figure 3 As shown, in some embodiments, the rolling apparatus 100 includes a drive member 110, a first support 120, a first rolling roll 140, and a second rolling roll 150, and also includes a second support 130. The first rolling roll 140 is rotatably connected to the first support 120 on one side in a first direction and to the second support 130 on the other side. The second rolling roll 150 is rotatably connected to the first support 120 on one side in a first direction and to the second support 130 on the other side. Through this arrangement, the first rolling roll 140 and the second rolling roll 150 can maintain a distance from each other through their rotatable connections to the first support 120 and the second support 130. The first rolling roll 140 and / or the second rolling roll 150 can drive the molten glass 10 into the space between the first rolling roll 140 and the second rolling roll 150, forming a glass sheet 20 through continuous compression and conveying by the first rolling roll 140 and the second rolling roll 150. Limiting the first calendering roll 140 and the second calendering roll 150 with multiple supports helps improve the stability of the first calendering roll 140 and the second calendering roll 150 during rotation, which in turn helps improve the stability of forming the glass plate 20.

[0032] On the other hand, in the above embodiment, the first calendering roller 140 is rotatably connected to the first support 120 on one side in the first direction and to the second support 130 on the other side, and the second calendering roller 150 is rotatably connected to the first support 120 on one side in the first direction and to the second support 130 on the other side. In this way, the portion of the first calendering roller 140 away from the first support 120 and the portion of the second calendering roller 150 away from the first support 120 can also apply a strong extrusion force to the glass during the calendering of the glass plate 20, thereby reducing the thickness difference between different parts of the glass plate 20 in the first direction.

[0033] Further, please refer to Figure 3 As shown, the temperature regulating device 300 includes a first cooling component 310 and a second cooling component 320. Both the first cooling component 310 and the second cooling component 320 can reduce the temperature of the transport space 400 below. In the first direction, the first cooling component 310 is located between the middle of the first calendering roll 140 and the first support 120, and the second cooling component 320 is located between the middle of the first calendering roll 140 and the second support 130.

[0034] The cooling assembly lowers the temperature of the portion of the glass plate 20 located below the cooling assembly by reducing the temperature of the transport space 400 below, thereby increasing the thickness of this portion. During the formation of the glass plate 20 in the calendering apparatus 100, the first calendering roll 140 and the second calendering roll 150 are subjected to the reaction force of the glass, resulting in localized deformation. Since the two sides of the first calendering roll 140 are rotatably connected to the first support 120 and the second support 130 respectively, and the two sides of the second calendering roll 150 are also rotatably connected to the first support 120 and the second support 130 respectively, the portions of the first calendering roll 140 and the second calendering roll 150 connected to the first support 120 are strongly constrained by the first support 120, and the portions of the first calendering roll 140 and the second calendering roll 150 connected to the second support 130 are also strongly constrained by the second support 130. Therefore, the first calendering roll 140 and... The pressure exerted on the glass by the second calendering rolls 150 together will change in the first direction. The glass near the first support 120 will be thinned by the stronger pressure from the first calendering rolls 140 and the second calendering rolls 150. The glass near the second support 130 will be thinned by the stronger pressure from the first calendering rolls 140 and the second calendering rolls 150. At the same time, the glass far from the first support 120 and the second support 130 (that is, near the center of the area between the first support 120 and the second support 130 in the first direction) will be thickened by the weaker pressure from the first calendering rolls 140 and the second calendering rolls 150. In the above embodiment, the first cooling component 310 is disposed between the middle of the first calendering roll 140 and the first support 120 in the first direction. The first cooling component 310 can increase the thickness of the portion of the glass plate 20 near the first support 120. The second cooling component 320 is disposed between the middle of the first calendering roll 140 and the second support 130. The second cooling component 320 can increase the thickness of the portion of the glass plate 20 near the second support 130. This helps to reduce the thickness difference between different portions of the glass plate 20 in the first direction.

[0035] Further, please refer to Figure 3 As shown, the temperature regulating device 300 includes a heating component 330, which can raise the temperature of the transport space 400 below. In the first direction, the heating component 330 is located between the first cooling component 310 and the second cooling component 320. With the above solution, the heating component 330 can heat the portion of the glass plate 20 away from the first support 120 and the second support 130 (that is, the portion near the center of the area between the first support 120 and the second support 130 in the first direction), thereby reducing the thickness of the portion of the glass plate 20 away from the first support 120 and the second support 130, which is beneficial to reducing the thickness difference between different portions of the glass plate 20 in the first direction.

[0036] Without departing from the inventive concept of this utility model, those skilled in the art can adjust the structure of the first cooling component 310 and the second cooling component 320. In some embodiments, the first cooling component 310 includes a first cooling pipe, and the second cooling component 320 includes a second cooling pipe. The first and second cooling pipes are arranged along a first direction and are used to introduce coolant. Through the above scheme, the cooling pipes through which coolant is introduced can exchange heat with the material located in the transport space 400, thereby reducing the temperature of the transport space 400.

[0037] In some embodiments, please refer to Figure 3 As shown, where Figure 3 The locations of the air gun and air outlet are only shown and do not represent limitations on their structure. The first cooling assembly 310 includes a first air gun 311 with a downward-facing first air outlet 3111 through which air can be blown. The second cooling assembly 320 includes a second air gun 321 with a downward-facing second air outlet 3211 through which air can be blown. With this design, the air gun blows away heat from the transport space 400 through the air outlet, thereby cooling the portion of the glass plate 20 directly below the air outlet and reducing the thickness of that portion. Those skilled in the art can add multiple air guns based on the above embodiment to expand the cooling area and improve the cooling effect.

[0038] Without departing from the inventive concept of this utility model, those skilled in the art can adjust the structure of the heating component 330. In some embodiments, the heating component 330 heats the portion of the glass plate 20 located below the heating component 330 via an infrared heating tube.

[0039] Please refer to Figure 3 As shown, in some embodiments, wherein Figure 3 This illustration only shows the positions of the heating surface 331 and the heating wire 332 and does not imply any limitation on their structure. The heating assembly 330 has a downward-facing heating surface 331 and includes a heating wire 332, which at least partially covers the heating surface 331. Through this design, the heat from the heating wire 332 can be transferred to the transport space 400, thereby heating the glass located below the heating assembly 330 and reducing the thickness of the portion of the glass plate 20 directly below the heating assembly 330. Those skilled in the art can adjust the area of ​​the heating surface 331 and the degree to which the heating wire covers the heating surface 331 based on the above embodiment to adjust the heating effect.

[0040] It should be understood that in the prior art, glass is heated using an edge torch. Due to the large heating range of the edge torch, the effect on adjusting thickness differences is limited, with the minimum thickness difference only reduced to 0.15mm. However, the above embodiment, utilizing the first cooling component 310, the second cooling component 320, and the heating component 330 above the transport space, can more precisely adjust the local thickness, making the minimum thickness difference as low as 0.05mm. For a glass plate with a designed thickness of 3.2mm, the yield can be increased by 3%, and for a glass plate with a designed thickness of 2mm, the yield can be increased by 5%.

[0041] This invention does not limit the specific structure of the conveying device 200. In some embodiments, the conveying device 200 includes a conveyor belt extending along a first direction for carrying and conveying the glass plate 20.

[0042] In some embodiments, the conveying device 200 includes a plurality of conveying rollers 210, the rotation axes of the plurality of conveying rollers 210 being parallel to a first direction, the plurality of conveying rollers 210 being arranged in a front-back direction, and being used to carry and convey the glass plate 20. Through the above scheme, the conveying device 200 can drive the carried glass plate 20 forward by the rotation of the plurality of conveying rollers 210.

[0043] Further, please refer to Figure 2 , Figure 3 As shown, in some embodiments, the calendering apparatus 100 includes a drive member 110, a first support 120, a first calendering roll 140, and a second calendering roll 150. Both the first calendering roll 140 and the second calendering roll 150 are rotatably connected to the first support 120, and the rotation axes of the first calendering roll 140 and the second calendering roll 150 are parallel to a first direction. The drive member 110 can drive the first calendering roll 140 and / or the second calendering roll 150 to rotate, so that the first calendering roll 140 and the second calendering roll 150 jointly roll out the glass plate 20. Along the first direction, both ends of each conveying roll 210 extend beyond the first calendering roll 140 and the second calendering roll 150.

[0044] With the above solution, for the glass plate 20 jointly rolled by the first calendering roller 140 and the second calendering roller 150, since both ends of the conveying roller 210 extend beyond the first calendering roller 140 and the second calendering roller 150 in the first direction, both ends of the conveying roller 210 will also extend beyond the two sides of the glass plate 20 in the first direction, thereby enabling more stable conveying of the glass plate 20 and reducing the risk of the glass plate 20 falling from both sides in the first direction.

[0045] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A glass rolling mill, characterized in that, Having a front-to-back direction, including: A rolling mill is used to roll out glass sheets; The conveying device is located in front of the calendering device; A temperature regulating device is located above the conveying device, and there is a transport space between the temperature regulating device and the conveying device; the glass plate rolled out by the rolling device enters the transport space, and the conveying device is used to receive and transport the glass plate located in the transport space forward. The temperature regulating device can adjust the temperature of the transport space at a preset position in a first direction, wherein the first direction, the up-down direction, and the front-back direction are perpendicular to each other.

2. The glass rolling mill according to claim 1, characterized in that, The calendering apparatus includes a drive unit, a first support, a first calendering roll, and a second calendering roll; both the first calendering roll and the second calendering roll are rotatably connected to the first support, and the rotation axes of the first calendering roll and the second calendering roll are parallel to the first direction; the drive unit can drive the first calendering roll and / or the second calendering roll to rotate, so that the first calendering roll and the second calendering roll jointly roll out the glass sheet.

3. The glass rolling mill according to claim 2, characterized in that, The temperature regulating device includes a first cooling component, which is capable of reducing the temperature of the transport space below and is located in the first direction between the middle of the first calender roll and the first support.

4. The glass rolling mill according to claim 2, characterized in that, The calendering apparatus further includes a second support, wherein the first calendering roll is rotatably connected to the first support on one side in the first direction and rotatably connected to the second support on the other side, and the second calendering roll is rotatably connected to the first support on one side in the first direction and rotatably connected to the second support on the other side.

5. The glass rolling mill according to claim 4, characterized in that, The temperature regulating device includes a first cooling component and a second cooling component, both of which can reduce the temperature of the transport space below; in the first direction, the first cooling component is located between the middle of the first calender roll and the first support, and the second cooling component is located between the middle of the first calender roll and the second support.

6. The glass rolling mill according to claim 5, characterized in that, The first cooling assembly includes a first air gun having a downward-facing first air outlet and capable of blowing air through the first air outlet; the second cooling assembly includes a second air gun having a downward-facing second air outlet and capable of blowing air through the second air outlet.

7. The glass rolling mill according to claim 5, characterized in that, The temperature regulating device includes a heating component capable of raising the temperature of the transport space below; in the first direction, the heating component is located between the first cooling component and the second cooling component.

8. The glass rolling mill according to claim 7, characterized in that, The heating assembly has a downward-facing heating surface, and the heating assembly includes an electric heating wire that at least partially covers the heating surface.

9. The glass rolling mill according to claim 1, characterized in that, The conveying device includes multiple conveying rollers, the rotation axes of the multiple conveying rollers are parallel to the first direction, the multiple conveying rollers are arranged in the front-back direction, and are used to carry and convey the glass plate.

10. The glass rolling mill according to claim 9, characterized in that, The calendering apparatus includes a drive unit, a first support, a first calendering roll, and a second calendering roll; both the first calendering roll and the second calendering roll are rotatably connected to the first support, and the rotation axes of the first calendering roll and the second calendering roll are parallel to the first direction; the drive unit can drive the first calendering roll and / or the second calendering roll to rotate, so that the first calendering roll and the second calendering roll jointly roll out the glass sheet; Along the first direction, both ends of each of the conveying rollers extend beyond the first calendering roller and the second calendering roller.

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