Calendering and forming apparatus, and glass production line

Abstract

A calendering and forming apparatus (100) and a glass production line (10), relating to the technical field of glass production. The calendering and forming apparatus (100) comprises a frame (110), a calendering roller pair (120), a first cooling roller (130), a first turning roller (140) and a transition roller group (150). The calendering roller pair (120) and the transition roller group (150) are both mounted on the frame (110), a roller gap (121) being provided between the calendering roller pair (120); the first cooling roller (130), the first turning roller (140) and the transition roller group (150) are sequentially arranged and parallel to each other; the first cooling roller (130) and the transition roller group (150) are both disposed at a lower side of a glass ribbon (400); the first turning roller (140) is disposed at an upper side of the glass ribbon (400); the glass ribbon (400), after passing the first cooling roller (130), travels to the first turning roller (140) at a first preset angle, the first preset angle being an angle between the glass ribbon (400) and the horizontal plane, and a range of the first preset angle being 95 degrees to 105 degrees. The calendering and forming apparatus (100) can prevent bending deformation of the edges of the glass ribbon (400), avoid the formation of wavy edges on both sides of the glass ribbon (400), improve the flatness of the glass ribbon (400), and ensure the quality of glass forming.

Description

A calendering forming device and a glass production line

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 2023117754202, filed with the Patent Office of China on December 21, 2023, entitled “A calendering forming device and a glass production line,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the technical field of glass production, and in particular to a calendering forming device and a glass production line. Background Art

[0004] With the widespread adoption of electronic glass in the mobile phone cover industry, demand for mass-produced, large-size, ultra-thin electronic glass is rapidly increasing. Currently, electronic glass for mobile phone covers is typically produced by fusing bricks and slicing them. This method is costly and has limited sheet width. Furthermore, using traditional rolling methods (lip bricks and vertical rollers) can easily lead to issues such as edge cooling, crystallization, large thickness variations across the glass sheet, and difficulty in thinning. To address these issues, a horizontal rolling roller structure has been developed and designed that feeds the molten glass in a vertical, downward flow.

[0005] However, the glass produced by the horizontal rolling roller structure is prone to form wavy edges on both sides of the glass ribbon, resulting in an uneven surface of the glass ribbon and affecting the quality of glass molding.

[0006] Public content

[0007] The embodiments of the present disclosure provide a rolling forming device and a glass production line, which can prevent the edges of a glass ribbon from bending and deforming, avoid the formation of wavy edges on both sides of the glass ribbon, improve the flatness of the glass ribbon, and ensure the quality of glass forming.

[0008] The present disclosure is implemented by adopting the following technical solutions.

[0009] A rolling forming device includes a frame, a rolling pair of rollers, a first cooling roller, a first turning roller and a transition roller group, wherein the rolling pair of rollers and the transition roller group are both installed on the frame, a roller gap is provided between the rolling pair of rollers, the first cooling roller, the first turning roller and the transition roller group are sequentially arranged along the traveling direction of the glass ribbon to convey the glass ribbon, the first cooling roller and the transition roller group are both arranged on the lower side of the glass ribbon and can contact the glass ribbon, the first turning roller is arranged on the upper side of the glass ribbon and can contact the glass ribbon, the glass ribbon passing through the first cooling roller travels to the first turning roller at a first preset angle, and the first preset angle ranges from 95 degrees to 105 degrees.

[0010] Optionally, a shaping gap is formed between the first turning roller and the transition roller group, and the first turning roller and the transition roller group work together to ensure that the glass ribbon is smoothly output from the shaping gap.

[0011] Optionally, the transition roller group includes a plurality of transition rollers arranged side by side, a line connecting the rotation axes of the plurality of transition rollers is located on a horizontal plane, and the shaping gap is formed between the first steering roller and one of the transition rollers located at the end.

[0012] Optionally, the transition roller group includes multiple transition rollers arranged side by side, the line connecting the rotation axes of the multiple transition rollers is arranged at a certain angle to the horizontal plane, and a shaping gap is formed between the first steering roller and one of the transition rollers located at the end.

[0013] Optionally, the first turning roller and one of the transition rollers located at the end rotate in opposite directions to roll the glass ribbon simultaneously.

[0014] Optionally, the calendering forming device also includes a first lifting mechanism and a second lifting mechanism, both of which are installed on the frame, the first lifting mechanism is connected to the first cooling roller for driving the first cooling roller to rise and fall, and the second lifting mechanism is connected to the first steering roller for driving the first steering roller to rise and fall.

[0015] Optionally, the first lifting mechanism is a liquid cylinder structure, an electric cylinder structure or a pneumatic cylinder structure, and / or the second lifting mechanism is a liquid cylinder structure, an electric cylinder structure or a pneumatic cylinder structure.

[0016] Optionally, the calendering forming device also includes a second cooling roller and a third lifting mechanism, the third lifting mechanism is installed on the frame, and is transmission-connected to the second cooling roller to drive the second cooling roller to rise and fall, and the second cooling roller is arranged on the lower side of the glass ribbon and can contact the glass ribbon.

[0017] Optionally, the calendering forming device further includes a temperature sensor and a controller, wherein the temperature sensor is electrically connected to the controller, and the temperature sensor is configured to detect the real-time temperature of the glass ribbon before entering the first turning roller, and send the real-time temperature to the controller, and the controller is configured to control the third lifting mechanism to drive the second cooling roller to rise to fit with the glass ribbon when the real-time temperature is greater than a preset temperature range, so as to use the second cooling roller to cool the glass ribbon.

[0018] Optionally, the preset temperature range is 650 degrees Celsius to 700 degrees Celsius.

[0019] Optionally, the second cooling roller is arranged on a side of the first cooling roller away from the first turning roller.

[0020] Optionally, in a horizontal direction perpendicular to the first cooling roller, the second cooling roller and the first turning roller, a distance between the second cooling roller and the first cooling roller is 5 mm to 15 mm.

[0021] Optionally, the second cooling roller is arranged on a side of the first cooling roller close to the first turning roller.

[0022] Optionally, there are multiple second cooling rollers and multiple third lifting mechanisms, and each third lifting mechanism is connected to one second cooling roller.

[0023] Optionally, the calendering forming device also includes a second turning roller, which is arranged on the upper side of the glass ribbon, and a shaping gap is formed between the second turning roller and the transition roller group. The second turning roller is arranged on the side of the first turning roller away from the first cooling roller, and the second turning roller and the transition roller group work together to ensure that the glass ribbon is output smoothly from the shaping gap.

[0024] Optionally, the first turning roller is arranged lower than the second turning roller, and the glass ribbon passing the first turning roller travels to the second turning roller at a second preset angle, and the second preset angle ranges from 165 degrees to 175 degrees.

[0025] Optionally, the calendering forming device further includes a fourth lifting mechanism, which is installed on the frame and is transmission-connected to the second steering roller.

[0026] A glass production line comprises the above-mentioned calendering and forming device.

[0027] The calendering forming device and glass production line provided by the embodiments of the present disclosure have the following beneficial effects:

[0028] The calendering molding device provided in the embodiment of the present disclosure can prevent the edge of the glass ribbon from bending and deforming, avoid the formation of wavy edges on both sides of the glass ribbon, improve the flatness of the glass ribbon, and ensure the quality of glass molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0030] FIG1 is a schematic structural diagram of a glass production line provided by an embodiment of the present disclosure;

[0031] FIG2 is a schematic structural diagram of a calendering forming device during a calendering process according to an embodiment of the present disclosure;

[0032] FIG3 is a schematic structural diagram of a calendering forming device provided in an embodiment of the present disclosure;

[0033] FIG4 is a schematic structural diagram of a calendering forming device during a calendering process according to an embodiment of the present disclosure;

[0034] FIG5 is a block diagram of the electrical connection between the temperature sensor and the controller in the calendering device provided by an embodiment of the present disclosure;

[0035] FIG6 is a schematic structural diagram of a calendering forming device provided in an embodiment of the present disclosure;

[0036] FIG7 is a schematic structural diagram of the calendering forming device provided in an embodiment of the present disclosure during the calendering process.

[0037] Icons: 10-glass production line; 100-calendering forming device; 110-frame; 120-calendering rollers; 121-gap between rollers; 130-first cooling roller; 140-first turning roller; 150-transition roller group; 151-transition roller; 160-shaping gap; 170-first lifting mechanism; 180-second lifting mechanism; 190-second cooling roller; 200-third lifting mechanism; 210-temperature sensor; 220-controller; 230-second turning roller; 240-fourth lifting mechanism; 300-glass melt feeding device; 400-glass ribbon. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all of them. Generally, the components of the embodiments of the present disclosure described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the present disclosure as claimed, but merely represents selected embodiments of the present disclosure. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort shall fall within the scope of protection of the present disclosure.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] In the description of this disclosure, it should be noted that the terms "inside," "outside," "upper," "lower," and "horizontal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the disclosed product is typically placed when in use. These terms are intended solely to facilitate the description of this disclosure and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0043] The following describes some embodiments of the present disclosure in detail with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0044] With the widespread application of electronic glass in the mobile phone cover industry, the demand for mass production of large-size, ultra-thin electronic glass is rapidly increasing. Currently, electronic glass for mobile phone covers is typically produced by fusing bricks and slicing them. This production method is costly and has limited sheet width. Furthermore, using traditional rolling (lip bricks and vertical rollers) can easily lead to issues such as edge cooling, crystallization, large thickness variations across the glass sheet, and difficulty in thinning.

[0045] To address this issue, a horizontal rolling roller structure was developed and designed. This structure feeds molten glass in a vertical downward flow. The molten glass falls into the gap between the rollers, forming a shoal. Under the squeezing and cooling action of the rollers, it forms a glass ribbon. This forming method eliminates the time and space for the molten glass to cool down and crystallize, effectively avoiding the problem of glass cooling and crystallization at the edges of the sidewalls and lip tiles.

[0046] However, when using a horizontal rolling roller structure, it was found that after the glass melt falls into the gap between the rollers to form a material pool, the glass melt located in the middle of the material pool has a longer contact time with the rolling rollers, while the glass melt located on both sides of the material pool has a shorter contact time with the rolling rollers. Cooling water is passed through the rolling rollers, resulting in higher temperatures on both sides of the glass ribbon behind the rollers and lower temperatures in the middle, resulting in a large lateral temperature difference in the glass ribbon. As a result, when the glass ribbon is transported horizontally, its edges will bend and sag under the action of its own gravity, forming wavy edges on both sides of the glass ribbon behind the rollers, resulting in an uneven surface of the glass ribbon, which affects the quality of glass molding. Based on this, please refer to Figures 1 and 2. The embodiment of the present disclosure provides a glass production line 10 configured to produce glass products, wherein the glass products can be glass or microcrystalline glass. It can prevent the edges of the glass ribbon 400 from bending and deforming, avoid the formation of wavy edges on both sides of the glass ribbon 400, improve the flatness of the glass ribbon 400, and ensure the quality of glass molding.

[0047] It should be noted that the glass production line 10 includes a molten glass feeding device 300, a rolling and forming device 100, and an annealing lehr (not shown). The molten glass feeding device 300 is positioned above the rolling and forming device 100, and the rolling and forming device 100 and the annealing lehr are sequentially arranged along the flow direction of the molten glass. The molten glass feeding device 300 is configured to feed the rolling and forming device 100 so that the molten glass flows into the rolling and forming device 100; the rolling and forming device 100 is configured to roll and form the molten glass to produce a glass ribbon 400; and the annealing lehr is configured to anneal the glass ribbon 400 to reduce the hardness of the glass ribbon 400, eliminate residual stress, stabilize the dimensions, reduce deformation and cracking tendencies, and ultimately produce a glass product.

[0048] The rolling and forming apparatus 100 includes a frame 110, a rolling roller pair 120, a first cooling roller 130, a first turning roller 140, and a transition roller set 150. The rolling roller pair 120 and the transition roller set 150 are both mounted on the frame 110, which supports and limits the rolling roller pair 120 and the transition roller set 150. A gap 121 is defined between the rolling roller pair 120. A molten glass feeding device 300 is disposed above the gap 121 and is configured to feed molten glass into the gap 121. The rolling roller pair 120 is configured to roll the molten glass into a glass ribbon 400 and then discharge the glass ribbon 400 from the gap 121. The first cooling roller 130, the first turning roller 140, and the transition roller set 150 are sequentially arranged along the feeding direction. The axes of the first cooling roller 130 and the first turning roller 140 are spatially parallel, and are also parallel to the plane formed by the transition roller set 150. As the glass ribbon 400 travels, it passes through the first cooling roller 130, the first turning roller 140, and the transition roller set 150 in sequence. The first cooling roller 130 is configured to cool the glass ribbon 400 after cooling water is passed through it, thereby reducing the temperature of the glass ribbon 400. The first turning roller 140 is configured to turn the glass ribbon 400 to adjust its travel direction. The transition roller set 150 is configured to feed the glass ribbon 400 into an annealing lehr to facilitate the annealing process of the glass ribbon 400.

[0049] Specifically, the first cooling roller 130 and the transition roller set 150 are both disposed below the glass ribbon 400, while the first turning roller 140 is disposed above the glass ribbon 400. Each of the first cooling roller 130, the transition roller set 150, and the first turning roller 140 are capable of contacting the glass ribbon 400 when the glass ribbon 400 reaches a corresponding position. The first cooling roller 130, the transition roller set 150, and the first turning roller 140 all rotate in the same direction as the glass ribbon 400. That is, the first cooling roller 130 and the transition roller set 150 rotate in the same direction, and opposite to the direction of rotation of the first turning roller 140. In one embodiment, the first cooling roller 130, the transition roller set 150, and the first turning roller 140 can all serve as either driving rollers or driven rollers. That is, the first cooling roller 130, the transition roller set 150, and the first turning roller 140 can all drive the glass ribbon 400 forward, or can be driven by the glass ribbon 400 to rotate as the glass ribbon 400 travels.

[0050] It is worth noting that in the process of rolling and forming the glass melt by the rolling forming device 100, the glass melt feeding device 300 is first used to feed the glass melt into the gap 121 between the rollers, and the glass melt is rolled and formed into a glass ribbon 400 by the rolling rollers 120; then the glass ribbon 400 is controlled to move forward by the leader, so that the glass ribbon 400 passes through the first cooling roller 130, the first turning roller 140 and the transition roller group 150 in sequence; finally, the glass ribbon 400 is sent to the annealing furnace for annealing treatment to obtain a glass product.

[0051] Continuing with FIG. 2 , as the glass ribbon 400 sequentially passes through the first cooling roller 130, the first turning roller 140, and the transition roller set 150, the glass ribbon 400 exiting the gap 121 travels at an initial angle to the first cooling roller 130. The first cooling roller 130 is configured to alter the feeding path of the glass ribbon 400 so that the glass ribbon 400 enters the first turning roller 140 in a position as close to a vertical plane as possible after passing through the first cooling roller 130 (a vertical position of the glass ribbon 400 will prevent the edges of the glass ribbon 400 from bending or sagging due to its own weight). The first cooling roller 130 is also configured to appropriately cool the glass ribbon 400 to prevent the edges of the glass ribbon 400 from remaining at elevated temperatures after passing through the first turning roller 140 (the glass ribbon 400 travels horizontally on the transition roller set 150 after passing through the first turning roller 140. If the edges of the glass ribbon 400 remain elevated at this point, the edges of the glass ribbon 400 may bend or sag due to their own weight). Next, the glass ribbon 400, having passed through the first cooling roller 130, travels to the first turning roller 140 at a first preset angle. During this section of the path, the glass ribbon 400 is less likely to bend or sag on either side because the first cooling roller 130 has already lowered its temperature and increased its hardness. As the glass ribbon 400 passes through the first turning roller 140, the first turning roller 140 causes the glass ribbon 400 to turn, causing it to land on the transition roller set 150. At this point, the glass ribbon 400's sides, cooled by the first cooling roller 130, supplemented by the first turning roller 140, and naturally cooled, have become hardened. This prevents further bending or sagging during the path from the transition roller set 150 to the annealing lehr, allowing the glass ribbon 400 to maintain a flat surface as it travels to the transition roller set 150. The glass ribbon 400, having passed through the first turning roller 140, then travels horizontally along the transition roller set 150 and ultimately enters the annealing lehr.

[0052] For ease of understanding, the first preset angle is denoted as a (see a in FIG2 ). The first preset angle is the angle between the glass ribbon 400 and the horizontal plane in the path between the first cooling roller 130 and the first turning roller 140. This angle is selected as the angle formed by the horizontal plane and the surface of the glass ribbon 400 (i.e., the side not in contact with the first cooling roller 130). The present embodiment analyzes the glass ribbon 400 in the path between the first cooling roller 130 and the first turning roller 140. Although it has been mentioned above that the sides of the glass ribbon 400 are unlikely to bend or sag in this path, if the glass ribbon 400 is relatively horizontal in this path (i.e., the angle between the glass ribbon 400 and the horizontal plane is relatively small), the sides of the glass ribbon 400 may still bend or sag.

[0053] To prevent the edges of the glass ribbon 400 from bending and deforming between the first cooling roller 130 and the first turning roller 140, the glass ribbon 400 passing through the first cooling roller 130 is controlled to travel at a first preset angle to the first turning roller 140. Specifically, the first preset angle ranges from 95 degrees to 105 degrees. This ensures that the glass ribbon 400 does not bend or sag between the first cooling roller 130 and the first turning roller 140 due to the larger angle between the glass ribbon 400 and the horizontal plane. If the first preset angle is less than 95 degrees, the contact area between the glass ribbon 400 and the first turning roller 140 is too large, causing excessive heat transfer from the glass ribbon 400 to the first turning roller 140, rapidly increasing the temperature of the first turning roller 140 and increasing the risk of roller sticking. If the first preset angle is greater than 105 degrees, the glass ribbon 400 will be too horizontal, and the edges of the glass ribbon 400 may bend and sag under their own weight, forming wavy edges on both sides of the glass ribbon 400 after rolling. This will cause the surface of the glass ribbon 400 to be uneven, affecting the quality of glass forming. Thus, by providing the first cooling roller 130 and the first turning roller 140 to cause the glass ribbon 400 to travel at the first preset angle (ranging from 95 degrees to 105 degrees), the risk of roller sticking can be effectively reduced, and bending and deformation of the edges of the glass ribbon 400 can be prevented, thereby avoiding the formation of wavy edges on both sides of the glass ribbon 400, improving the flatness of the glass ribbon 400, and ensuring the quality of glass forming.

[0054] Furthermore, the initial angle is the angle between the glass ribbon 400 and the horizontal plane along the path between the rolling rollers 120 and the first cooling roller 130. The angle is selected to be the angle formed by the horizontal plane and the surface of the glass ribbon 400 (i.e., the surface not in contact with the first cooling roller 130). In one embodiment, the initial angle ranges from 90 degrees to 135 degrees. Specifically, the initial angle can be adjusted based on actual operating conditions, as long as it does not affect the delivery of the glass ribbon 400 from the gap 121 between the rolling rollers and the normal operation of the rolling rollers 120. There is no specific limitation on the initial angle.

[0055] Continuing with FIG1 , in one embodiment, the first turning roller 140 is disposed above the transition roller assembly 150, with a shaping gap 160 formed between the first turning roller 140 and the transition roller assembly 150. The first turning roller 140 and the transition roller assembly 150 work together to ensure that the glass ribbon 400 is smoothly discharged from the shaping gap 160. In another embodiment, the transition roller assembly 150 extends horizontally and includes a plurality of transition rollers 151 arranged side by side. The line connecting the rotation axes of the plurality of transition rollers 151 lies on a horizontal plane, and the shaping gap 160 is formed between the first turning roller 140 and a transition roller 151 located at the end. In another embodiment, the transition roller group 150 is arranged to extend obliquely in the horizontal direction, the line connecting the rotation axes of the multiple transition rollers 151 is arranged at a certain angle to the horizontal plane, and a shaping gap 160 is formed between the first turning roller 140 and a transition roller 151 located at the end. The transition roller group 150 is inclined in the horizontal direction and can be arranged according to the position of the next process to facilitate the conveyance of the glass ribbon 400 to the appropriate workstation.

[0056] In one embodiment, the first turning roller 140 is disposed directly above a transition roller 151 located at the end. The first turning roller 140 is disposed on the upper side of the glass ribbon 400, and the transition roller 151 located at the end is disposed on the lower side of the glass ribbon 400. During the shaping process of the glass ribbon 400, the glass ribbon 400 enters the shaping gap 160 between the first turning roller 140 and the transition roller set 150. During this process, the first turning roller 140 and the transition roller 151 located at the end rotate in opposite directions to simultaneously roll the glass ribbon 400, thereby improving the flatness of the glass ribbon 400. Thereafter, the glass ribbon 400 moves forward under the restraining action of the remaining multiple transition rollers 151 until it enters the annealing furnace.

[0057] Referring again to FIG. 1 , in one embodiment, the calendaring apparatus 100 further includes a first lifting mechanism 170 and a second lifting mechanism 180. The first lifting mechanism 170 and the second lifting mechanism 180 are both mounted on the frame 110. The first lifting mechanism 170 is in transmission connection with the first cooling roller 130 and is configured to raise or lower the first cooling roller 130. The second lifting mechanism 180 is in transmission connection with the first turning roller 140 and is configured to raise or lower the first turning roller 140. The first lifting mechanism 170 and the second lifting mechanism 180 work together to control the movement of the first cooling roller 130 and the first turning roller 140 to predetermined positions, thereby causing the glass ribbon 400 passing through the first cooling roller 130 to travel to the first turning roller 140 at a first predetermined angle.

[0058] In one embodiment, the first lifting mechanism 170 and the second lifting mechanism 180 are both hydraulic cylinder structures, but are not limited to this. In other embodiments, the first lifting mechanism 170 and the second lifting mechanism 180 can both be electric cylinder structures or pneumatic cylinder structures. In addition, the first lifting mechanism 170 and the second lifting mechanism 180 can also adjust the height position of the roller by connecting the screw rod and the hand wheel, and the roller can be raised or lowered by rotating the hand wheel forward and reverse. There is no specific limitation on the driving method of the first lifting mechanism 170 and the second lifting mechanism 180.

[0059] In the rolling forming apparatus 100 provided by the present disclosure, a rolling roller pair 120 and a transition roller set 150 are both mounted on a frame 110, with a gap 121 defined between the rolling roller pair 120. The rolling roller pair 120 is configured to roll a glass melt into a glass ribbon 400 and discharge the glass ribbon 400 from the gap 121. The transition roller set 150 is configured to feed the glass ribbon 400 into an annealing lehr. The first cooling roller 130 and the transition roller set 150 are positioned below the glass ribbon 400 and are both capable of contacting the glass ribbon 400 when the glass ribbon 400 reaches a corresponding position. The first turning roller 140 is positioned above the glass ribbon 400 and is capable of contacting the glass ribbon 400 when the glass ribbon 400 reaches a corresponding position. The glass ribbon 400, passing through the first cooling roller 130, advances to the first turning roller 140 at a first predetermined angle, with the first predetermined angle ranging from 95 degrees to 105 degrees.

[0060] Compared to the prior art, the rolling and forming apparatus 100 provided in the embodiment of the present disclosure utilizes a first cooling roller 130 and a first turning roller 140 that cause the glass ribbon 400 to travel at a first preset angle. This prevents bending and deformation of the edges of the glass ribbon 400, avoids the formation of wavy edges on both sides of the glass ribbon 400, improves the flatness of the glass ribbon 400, and ensures the quality of the glass formed. This results in high product quality and a high yield rate for the glass production line 10.

[0061] 3-4 , an embodiment of the present disclosure provides a calendering device 100 . Compared with the above embodiment, the difference of this embodiment is that the calendering device 100 further includes a second cooling roller 190 and a third lifting mechanism 200 .

[0062] In one embodiment, the third lifting mechanism 200 is mounted on the frame 110 and is in transmission connection with the second cooling roller 190. The third lifting mechanism 200 is configured to raise or lower the second cooling roller 190 so as to move the second cooling roller 190 closer to or further away from the glass ribbon 400. The second cooling roller 190 is configured to further cool the glass ribbon 400 after cooling water is passed through it, thereby reducing the temperature of the glass ribbon 400. Specifically, the second cooling roller 190 is disposed on the lower side of the glass ribbon 400 and is capable of contacting the glass ribbon 400 when the glass ribbon 400 travels to a corresponding position. The second cooling roller 190 rotates in the direction of travel of the glass ribbon 400. The second cooling roller 190 can function as both a driving roller and a driven roller.

[0063] 5 , in one embodiment, the calendaring device 100 further includes a temperature sensor 210 and a controller 220. The temperature sensor 210 is electrically connected to the controller 220. The temperature sensor 210 is configured to detect the real-time temperature of the glass ribbon 400 before entering the first turning roller 140 and transmit the real-time temperature to the controller 220. The controller 220 is configured to control the third lifting mechanism 200 to drive the second cooling roller 190 to rise to contact with the glass ribbon 400 when the real-time temperature is greater than a preset temperature range, so as to cool the glass ribbon 400 using the second cooling roller 190.

[0064] Specifically, when the real-time temperature of the glass ribbon 400 before entering the first turning roller 140 is greater than the preset temperature, it indicates that the cooling effect of the first cooling roller 130 is insufficient. At this time, the viscosity of the glass ribbon 400 is relatively high, increasing the risk of the glass ribbon 400 sticking to the first turning roller 140. If the real-time temperature remains above the preset temperature, the risk of sticking will continue to increase, leading to the occurrence of sticking. Therefore, to reduce the risk of sticking, it is necessary to control the third lifting mechanism 200 to drive the second cooling roller 190 to further cool the glass ribbon 400, further reducing the temperature of the glass ribbon 400 so that the real-time temperature does not exceed the preset temperature. By controlling the temperature within an appropriate range, the risk of sticking is reduced and the occurrence of sticking can be further prevented.

[0065] In one embodiment, the preset temperature range is 650 degrees Celsius to 700 degrees Celsius and all ranges and sub-ranges therebetween, such as 650 degrees Celsius to 660 degrees Celsius, 660 degrees Celsius to 670 degrees Celsius, 670 degrees Celsius to 680 degrees Celsius, 680 degrees Celsius to 690 degrees Celsius, 690 degrees Celsius to 700 degrees Celsius, 650 degrees Celsius to 670 degrees Celsius, 660 degrees Celsius to 680 degrees Celsius, 670 degrees Celsius to 690 degrees Celsius, 680 degrees Celsius to 700 degrees Celsius, etc.

[0066] If the glass ribbon 400's temperature before entering the first turning roller 140 is lower than 650 degrees Celsius, cold cracks are likely to form on the glass ribbon 400 after turning through the first turning roller 140, affecting the quality of the glass being formed. If the glass ribbon 400's temperature before entering the first turning roller 140 is higher than 700 degrees Celsius, the glass ribbon 400 is likely to stick to the roller when passing through the first turning roller 140, also affecting the quality of the glass being formed.

[0067] In one embodiment, the second cooling roller 190 is disposed on the side of the first cooling roller 130 away from the first turning roller 140. During the travel of the glass ribbon 400, the glass ribbon 400 passes through the second cooling roller 190, the first cooling roller 130, the first turning roller 140, and the transition roller set 150 in sequence, and ultimately enters the annealing lehr. However, this is not limiting. In other embodiments, the second cooling roller 190 may also be disposed on the side of the first cooling roller 130 closer to the first turning roller 140, that is, the second cooling roller 190 is disposed between the first cooling roller 130 and the first turning roller 140. In this case, the glass ribbon 400 passes through the first cooling roller 130, the second cooling roller 190, the first turning roller 140, and the transition roller set 150 in sequence. The position of the second cooling roller 190 is not specifically limited.

[0068] Continuing with FIG3 , in this embodiment, in a horizontal direction perpendicular to the first cooling roller 130 , the second cooling roller 190 , and the first turning roller 140 , the spacing between the second cooling roller 190 and the first cooling roller 130 ranges from 5 mm to 15 mm and all ranges and sub-ranges therebetween. The spacing between the second cooling roller 190 and the first cooling roller 130 is calculated as follows:

[0069] Determine the tangent line of the second cooling roller 190 perpendicular to the horizontal plane and close to the first cooling roller 130 as X, determine the tangent line of the first cooling roller 130 perpendicular to the horizontal plane and close to the second cooling roller 190 as Y, and calculate the horizontal distance between the tangent line X and the tangent line Y.

[0070] For example, 5 mm to 8 mm, 8 mm to 11 mm, 11 mm to 15 mm, 5 mm to 11 mm, 8 mm to 15 mm, 7 mm to 12 mm, 9 mm to 14 mm, 10 mm to 15 mm, etc. The spacing between the first cooling roller 130 and the first turning roller 140 ranges from 5 mm to 15 mm. The spacing between the first cooling roller 130 and the first turning roller 140 is calculated in a similar manner and will not be further described. A reasonable gap between the rollers prevents the glass ribbon 400 from getting stuck during feeding, ensuring smooth and stable feeding of the glass ribbon 400.

[0071] In this embodiment, there is one second cooling roller 190 and one third lifting mechanism 200, but this is not limiting. In other embodiments, there may be multiple second cooling rollers 190 and multiple third lifting mechanisms 200. Each third lifting mechanism 200 is connected to at least one second cooling roller 190. The multiple second cooling rollers 190 work together to further improve the cooling effect on the glass ribbon 400 and ensure that the real-time temperature of the glass ribbon 400 before entering the first turning roller 140 is within a preset temperature range. The multiple third lifting mechanisms 200 can be provided in a one-to-one correspondence with the multiple second cooling rollers 190. Of course, one third lifting mechanism 200 can also be connected to multiple second cooling rollers 190, and the one third lifting mechanism 200 is configured to drive the multiple second cooling rollers 190 to move up and down, which is not limited here.

[0072] The beneficial effects of the calendering forming device 100 provided in the embodiment of the present disclosure are the same as those of the first embodiment, and will not be repeated here.

[0073] 6 and 7 , optionally, the calendering device 100 of this embodiment further includes a second turning roller 230 and a fourth lifting mechanism 240 .

[0074] In this embodiment, the fourth lifting mechanism 240 is mounted on the frame 110 and is in transmission connection with the second turning roller 230. The fourth lifting mechanism 240 is configured to raise or lower the second turning roller 230 so as to move the second turning roller 230 away from or closer to the glass ribbon 400. The second turning roller 230 is configured to turn the glass ribbon 400 to adjust the travel direction of the glass ribbon 400. Specifically, the second turning roller 230 is disposed above the glass ribbon 400 and is capable of contacting the glass ribbon 400 when the glass ribbon 400 travels to a corresponding position. The rotation direction of the second turning roller 230 is along the travel direction of the glass ribbon 400. The second turning roller 230 can function as both a driving roller and a driven roller.

[0075] In this embodiment, a shaping gap 160 is no longer formed between the first turning roller 140 and the transition roller group 150. The second turning roller 230 is arranged on the side of the first turning roller 140 away from the first cooling roller 130. A shaping gap 160 is formed between the second turning roller 230 and the transition roller group 150. The second turning roller 230 and the transition roller group 150 work together to ensure that the glass ribbon 400 is smoothly output from the shaping gap 160.

[0076] In one embodiment, the second turning roller 230 is disposed directly above a transition roller 151 located at the end. The second turning roller 230 is disposed on the upper side of the glass ribbon 400, and the transition roller 151 located at the end is disposed on the lower side of the glass ribbon 400. During the shaping process of the glass ribbon 400, the glass ribbon 400 enters the shaping gap 160 between the second turning roller 230 and the transition roller set 150. During this process, the second turning roller 230 and the transition roller 151 located at the end rotate in opposite directions to simultaneously roll the glass ribbon 400, thereby improving the flatness of the glass ribbon 400. Thereafter, the glass ribbon 400 moves forward under the restraining action of the remaining multiple transition rollers 151 until it enters the annealing furnace.

[0077] In this embodiment, the first turning roller 140 is positioned lower than the second turning roller 230. The glass ribbon 400 passing through the first turning roller 140 travels to the second turning roller 230 at a second predetermined angle. The second predetermined angle is the angle between the glass ribbon 400 and a horizontal plane along the path between the first turning roller 140 and the second turning roller 230. The angle is selected as the angle formed by the horizontal plane and the side of the glass ribbon 400 not in contact with the first turning roller 140 (see FIG. 7 c). Specifically, the second preset angle ranges from 165 degrees to 175 degrees, so that the glass ribbon 400 has a rapid change from downward to upward during its travel, that is, the glass ribbon 400 first travels obliquely downward, then travels obliquely upward, and finally travels horizontally under the action of the transition roller group 150. In this way, during the traveling of the glass ribbon 400, the first turning roller 140, the second turning roller 230 and the transition roller group 150 work together to change the traveling direction of the glass ribbon 400 twice in a short period of time (once from oblique downward to oblique upward, and once from oblique upward to horizontal). On the one hand, the contact area between the glass ribbon 400 and the roller surface of the first turning roller 140 is increased, thereby improving the auxiliary cooling effect of the first turning roller 140 on the glass ribbon 400. On the other hand, the second turning roller 230 continuously presses the glass ribbon 400 during the traveling process, making the surface of the glass ribbon 400 smoother.

[0078] The beneficial effects of the calendering forming device 100 provided in the embodiment of the present disclosure are the same as those of the first embodiment, and will not be repeated here.

[0079] The above are merely preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations of the present disclosure are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure. Industrial Applicability

[0080] In summary, the embodiments of the present disclosure provide a rolling forming device and a glass production line, which can prevent the edges of the glass ribbon from bending and deforming, avoid the formation of wavy edges on both sides of the glass ribbon, improve the flatness of the glass ribbon, and ensure the quality of glass forming.

Claims

1. A calendering device, characterized in that: The invention comprises a frame, a pair of calendering rollers, a first cooling roller, a first turning roller and a transition roller group, wherein the pair of calendering rollers and the transition roller group are both installed on the frame, a pair of roller gaps are arranged between the pair of calendering rollers, the first cooling roller, the first turning roller and the transition roller group are sequentially arranged along the traveling direction of the glass ribbon to convey the glass ribbon, the first cooling roller and the transition roller group are both arranged on the lower side of the glass ribbon and can contact the glass ribbon, the first turning roller is arranged on the upper side of the glass ribbon and can contact the glass ribbon, the glass ribbon passing through the first cooling roller travels to the first turning roller at a first preset angle, and the range of the first preset angle is 95 degrees to 105 degrees.

2. The calendering device according to claim 1, characterized in that: A shaping gap is formed between the first steering roller and the transition roller group, and the first steering roller and the transition roller group work together to ensure that the glass ribbon is smoothly output from the shaping gap.

3. The calendering device according to claim 2, characterized in that: The transition roller group includes a plurality of transition rollers arranged side by side, the line connecting the rotation axes of the plurality of transition rollers is located on a horizontal plane, and the shaping gap is formed between the first steering roller and one of the transition rollers located at the end.

4. The calendering device according to claim 2, characterized in that: The transition roller group includes a plurality of transition rollers arranged side by side, the connecting line of the rotation axes of the plurality of transition rollers is arranged at a certain angle to the horizontal plane, and a shaping gap is formed between the first steering roller and one of the transition rollers located at the end.

5. The calendering device according to claim 2 or 3, characterized in that: The first turning roller and one of the transition rollers located at the end rotate in opposite directions to roll the glass ribbon simultaneously.

6. The calendering device according to any one of claims 1 to 5, characterized in that: The calendering forming device also includes a first lifting mechanism and a second lifting mechanism, both of which are installed on the frame, the first lifting mechanism is connected to the first cooling roller for driving the first cooling roller to rise and fall, and the second lifting mechanism is connected to the first steering roller for driving the first steering roller to rise and fall.

7. The calendering device according to any one of claims 6, characterized in that: The first lifting mechanism is one of a liquid cylinder structure, an electric cylinder structure or a gas cylinder structure, and / or the second lifting mechanism is one of a liquid cylinder structure, an electric cylinder structure or a gas cylinder structure.

8. The calendering device according to any one of claims 1 to 7, characterized in that: The calendering forming device also includes a second cooling roller and a third lifting mechanism. The third lifting mechanism is installed on the frame and is transmission-connected to the second cooling roller to drive the second cooling roller to rise and fall. The second cooling roller is arranged on the lower side of the glass ribbon and can contact the glass ribbon.

9. The calendering device according to claim 8, characterized in that: The calendering forming device also includes a temperature sensor and a controller, wherein the temperature sensor is electrically connected to the controller, and the temperature sensor is configured to detect the real-time temperature of the glass ribbon before entering the first turning roller, and send the real-time temperature to the controller, and the controller is configured to control the third lifting mechanism to drive the second cooling roller to rise to fit with the glass ribbon when the real-time temperature is greater than a preset temperature range, so as to use the second cooling roller to cool the glass ribbon.

10. The calendering device according to claim 9, characterized in that: The preset temperature range is 650 degrees Celsius to 700 degrees Celsius.

11. The calendering device according to any one of claims 8 to 10, characterized in that: The second cooling roller is arranged on a side of the first cooling roller away from the first turning roller.

12. The calendering device according to claim 11, characterized in that: In a horizontal direction perpendicular to the first cooling roller, the second cooling roller and the first turning roller, a distance between the second cooling roller and the first cooling roller is 5 mm to 15 mm.

13. The calendering device according to any one of claims 8 to 10, characterized in that: The second cooling roller is arranged on a side of the first cooling roller close to the first turning roller.

14. The calendering device according to any one of claims 8 to 13, characterized in that: There are multiple second cooling rollers and multiple third lifting mechanisms, and each of the third lifting mechanisms is connected to at least one of the second cooling rollers.

15. The calendering device according to claim 1, characterized in that: The calendering forming device also includes a second steering roller, which is arranged on the upper side of the glass ribbon, and a shaping gap is formed between the second steering roller and the transition roller group. The second steering roller is arranged on the side of the first steering roller away from the first cooling roller, and the second steering roller and the transition roller group work together to ensure that the glass ribbon is smoothly output from the shaping gap.

16. The calendering device according to claim 15, characterized in that: The first turning roller is arranged lower than the second turning roller, and the glass ribbon passing through the first turning roller travels to the second turning roller at a second preset angle, and the second preset angle ranges from 165 degrees to 175 degrees.

17. The calendering device according to claim 15 or 16, characterized in that: The calendering device also includes a fourth lifting mechanism, which is installed on the frame and is transmission-connected to the second steering roller.

18. A glass production line, characterized in that: It comprises a calendering forming device as described in any one of claims 1 to 17.

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