Calendaring forming device and glass production line

Abstract

The invention discloses a calendaring forming device and a glass production line, and relates to the technical field of glass production. The calendaring forming device comprises a rack, a calendaring roller pair, a first cooling roller, a first turning roller and a transition roller set. The rolling pair rollers and the transition roller set are both installed on the machine frame, a pair roller gap is formed between the rolling pair rollers, the first cooling roller, the first turning roller and the transition roller set are sequentially arranged and are parallel to one another, the first cooling roller and the transition roller set are both arranged on the lower side of the glass belt, and the first turning roller is arranged on the upper side of the glass belt. The glass tape passing through the first cooling roller advances to the first turning roller at a first preset angle, the first preset angle is an included angle between the glass tape and the horizontal plane, and the range of the first preset angle is 95-105 degrees. The calendaring molding device provided by the invention can prevent the edge part of the glass tape from bending deformation, prevents the two sides of the glass tape from forming wavy edges, improves the flatness of the glass tape, and ensures the glass molding quality.

Description

Technical Field

[0001] The present invention relates to the technical field of glass production, and in particular, to a calendering forming device and a glass production line. Background Art

[0002] At present, with the wide application of electronic glass in the mobile phone cover plate industry, the demand for mass production of large-size and ultra-thin electronic glass has increased rapidly. Currently, the electronic glass used for mobile phone cover plates is generally produced in the form of fused bricks plus sliced pieces. This production method has high costs and limited board width. If the traditional calendering form (lip bricks plus vertical opposing rollers) is used for production, problems such as edge cold materials, crystallization, large thickness differences on the glass plate surface, and difficulty in thinning are likely to occur.

[0003] To solve this problem, a horizontal calendering opposing roller structure has been developed and designed. This structure supplies the glass melt in a vertically downward feeding manner. The glass melt drops into the gap between the opposing rollers to form a material pool. Under the extrusion and cooling effects of the opposing rollers, a glass ribbon is formed. In this forming method, there is no time and space for the glass melt to cool down and crystallize. Therefore, the problems of cold materials and crystallization of the glass at the edge of the retaining bricks and the lip brick edge can be effectively avoided.

[0004] However, during the use of the horizontal calendering opposing roller structure, it is found that after the glass melt drops into the gap between the opposing rollers to form a material pool, the contact time between the glass melt in the middle position of the material pool and the calendering opposing rollers is longer, and the contact time between the glass melt at both side positions of the material pool and the calendering opposing rollers is shorter. Cooling water flows through the inside of the calendering opposing rollers, resulting in higher temperatures on both sides of the glass ribbon after the rollers and lower temperature in the middle, with a large transverse temperature difference in the glass ribbon. In this way, when the glass ribbon travels in the horizontal direction, its edges will bend and sag under their own gravity, causing wavy edges to form on both sides of the glass ribbon after the rollers, resulting in an uneven surface of the glass ribbon and affecting the glass forming quality. Summary of the Invention

[0005] The purpose of the present invention is to provide a calendering 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 glass forming quality.

[0006] The present invention is implemented by adopting the following technical solutions.

[0007] A calendering forming device comprises a frame, a calendering pair of rollers, a first cooling roller, a first turning roller and a transition roller group, wherein the calendering pair of rollers and the transition roller group are both mounted on the frame, a pair of roller gaps are provided between the calendering pair of rollers, the first cooling roller, the first turning roller and the transition roller group are sequentially arranged along the traveling direction of a 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.

[0008] Optionally, 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.

[0009] 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.

[0010] 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 be lifted and lowered, and the second lifting mechanism is connected to the first steering roller for driving the first steering roller to be lifted and lowered.

[0011] 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.

[0012] Optionally, the calendering forming device also includes a temperature sensor and a controller, the temperature sensor is electrically connected to the controller, the temperature sensor is used 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, the controller is used 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.

[0013] Optionally, the preset temperature range is 650 degrees Celsius to 700 degrees Celsius.

[0014] Optionally, the second cooling roller is disposed on a side of the first cooling roller away from the first turning roller.

[0015] Optionally, the number of the second cooling rollers and the number of the third lifting mechanisms are both plural, and each of the third lifting mechanisms is connected to one of the second cooling rollers.

[0016] Optionally, the calendering and forming device further includes a second turning roller disposed on an upper side of the glass ribbon. A shaping gap is formed between the second turning roller and the transition roller group. The second turning roller is disposed on a side of the first turning roller away from the first cooling roller. The second turning roller and the transition roller group act together to ensure that the glass ribbon is output flatly from the shaping gap.

[0017] Optionally, the first turning roller is disposed 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 range of the second preset angle is 165 degrees to 175 degrees.

[0018] Optionally, the calendering and forming device further includes a fourth lifting mechanism mounted on the frame and drivingly connected to the second turning roller.

[0019] A glass production line includes the above-mentioned calendering and forming device.

[0020] The calendering and forming device and the glass production line provided by the present invention have the following beneficial effects:

[0021] Compared with the prior art, the calendering and forming device provided by the present invention can prevent the edge of the glass ribbon from being bent and deformed, avoid forming wavy edges on both sides of the glass ribbon, improve the flatness of the glass ribbon, and ensure the glass forming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 A schematic structural diagram of the glass production line provided by the first embodiment of the present invention;

[0024] Figure 2 A schematic structural diagram of the calendering and forming device provided by the first embodiment of the present invention during the calendering process;

[0025] Figure 3Schematic structural diagram of the calendering device provided by the second embodiment of the present invention;

[0026] Figure 4 Schematic structural diagram of the calendering device provided by the second embodiment of the present invention during the calendering process;

[0027] Figure 5 Block diagram of the electrical connection between the temperature sensor and the controller in the calendering device provided by the second embodiment of the present invention;

[0028] Figure 6 Schematic structural diagram of the calendering device provided by the third embodiment of the present invention;

[0029] Figure 7 Schematic structural diagram of the calendering device provided by the third embodiment of the present invention during the calendering process.

[0030] Icons: 10 - glass production line; 100 - calendering device; 110 - frame; 120 - calendering counter rolls; 121 - counter roll gap; 130 - first cooling roll; 140 - first turning roll; 150 - transition roll group; 151 - transition roll; 160 - shaping gap; 170 - first lifting mechanism; 180 - second lifting mechanism; 190 - second cooling roll; 200 - third lifting mechanism; 210 - temperature sensor; 220 - controller; 230 - second turning roll; 240 - fourth lifting mechanism; 300 - glass melt feeding device; 400 - glass ribbon. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0033] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, terms such as "set", "connected", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the features in the following embodiments can be combined with each other.

[0037] First Embodiment

[0038] Please refer to Figure 1 and Figure 2 , an embodiment of the present invention provides a glass production line 10 for producing glass products, where the glass products can be glass or glass-ceramics. It can prevent the edge of the glass ribbon 400 from bending and deforming, avoid forming wavy edges on both sides of the glass ribbon 400, improve the flatness of the glass ribbon 400, and ensure the glass forming quality.

[0039] It should be noted that the glass production line 10 includes a glass melt feeding device 300, a calendering and forming device 100, and an annealing furnace (not shown in the figure). Among them, the glass melt feeding device 300 is arranged above the calendering and forming device 100, and the calendering and forming device 100 and the annealing furnace are arranged in sequence along the flow direction of the glass melt. The glass melt feeding device 300 is used to feed the glass melt to the calendering and forming device 100 so that the glass melt flows into the calendering and forming device 100; the calendering and forming device 100 is used to calender and form the glass melt to obtain the glass ribbon 400; the annealing furnace is used to anneal the glass ribbon 400 to reduce the hardness of the glass ribbon 400, eliminate residual stress, stabilize the size, reduce the tendency of deformation and cracks, and finally obtain the glass product.

[0040] The calendering forming device 100 includes a frame 110, calendering counter rolls 120, a first cooling roll 130, a first turning roll 140, and a transition roll group 150. The calendering counter rolls 120 and the transition roll group 150 are both installed on the frame 110, and the frame 110 can carry and position the calendering counter rolls 120 and the transition roll group 150. A counter roll gap 121 is provided between the calendering counter rolls 120, and a glass melt feeding device 300 is arranged above the counter roll gap 121. The glass melt feeding device 300 is used to feed the glass melt into the counter roll gap 121, and the calendering counter rolls 120 are used to calender the glass melt into a glass ribbon 400 and output the glass ribbon 400 from the counter roll gap 121. The first cooling roll 130, the first turning roll 140, and the transition roll group 150 are arranged in sequence along the feeding direction. The spatial positional relationship between the axis of the first cooling roll 130 and the axis of the first turning roll 140 is parallel, and they are respectively parallel to the plane formed by the transition roll group 150. The glass ribbon 400 passes through the first cooling roll 130, the first turning roll 140, and the transition roll group 150 in sequence during its travel. The first cooling roll 130 is used to cool the glass ribbon 400 after cooling water is introduced, reducing the temperature of the glass ribbon 400. The first turning roll 140 is used to turn the glass ribbon 400 to adjust the travel direction of the glass ribbon 400. The transition roll group 150 is used to feed the glass ribbon 400 into an annealing furnace to facilitate the annealing process of the glass ribbon 400.

[0041] Specifically, both the first cooling roll 130 and the transition roll group 150 are arranged on the lower side of the glass ribbon 400, and the first turning roll 140 is arranged on the upper side of the glass ribbon 400, and they can all contact the glass ribbon 400 when the glass ribbon 400 travels to the corresponding position. The rotation directions of the first cooling roll 130, the transition roll group 150, and the first turning roll 140 are all along the travel direction of the glass ribbon 400, that is, the rotation directions of the first cooling roll 130 and the transition roll group 150 are the same, and both are opposite to the rotation direction of the first turning roll 140. In one embodiment, the first cooling roll 130, the transition roll group 150, and the first turning roll 140 can all be used as driving rolls or driven rolls, that is, the first cooling roll 130, the transition roll group 150, and the first turning roll 140 can all drive the glass ribbon 400 to move forward, or can be driven by the glass ribbon 400 to rotate during the travel of the glass ribbon 400.

[0042] It should be noted that during the calendering process of the glass melt by the calendering device 100, first, the glass melt feeding device 300 is used to feed the glass melt into the nip 121, and the calendering rolls 120 are used to calender the glass melt into a glass ribbon 400. Subsequently, the leading end is controlled to make the glass ribbon 400 travel forward, so that the glass ribbon 400 sequentially passes through the first cooling roll 130, the first turning roll 140, and the transition roll group 150. Finally, the glass ribbon 400 is sent into an annealing furnace for annealing treatment to obtain a glass product.

[0043] Continue to refer to Figure 2 , during the process that the glass ribbon 400 sequentially passes through the first cooling roll 130, the first turning roll 140, and the transition roll group 150, the glass ribbon 400 output from the nip 121 travels to the first cooling roll 130 at an initial angle. The first cooling roll 130 is used to change the feeding path of the glass ribbon 400, so that the glass ribbon 400 enters the first turning roll 140 in a state as close to perpendicular to the horizontal plane as possible after passing through the first cooling roll 130 (the glass ribbon 400 in a vertical state will not bend and sag at both side edges due to its own weight). The first cooling roll 130 is also used to appropriately cool the glass ribbon 400 to prevent the situation where the temperatures of both side edges of the glass ribbon 400 are still relatively high after passing through the first turning roll 140 (the glass ribbon 400 travels horizontally on the transition roll group 150 after passing through the first turning roll 140. If the temperatures of both side edges of the glass ribbon 400 are still relatively high at this time, the both side edges of the glass ribbon 400 will bend and sag due to their own weight). Then, the glass ribbon 400 passing through the first cooling roll 130 travels to the first turning roll 140 at a first preset angle. In this section of the path, since the temperature of the glass ribbon 400 has decreased and its hardness has increased under the action of the first cooling roll 130, the both sides of the glass ribbon 400 are not prone to bending and sagging. When the glass ribbon 400 passes through the first turning roll 140, the first turning roll 140 drives the glass ribbon 400 to turn, so that the glass ribbon 400 lands on the transition roll group 150. At this time, the both sides of the glass ribbon 400 are hardened under the cooling action of the first cooling roll 130, the auxiliary cooling action of the first turning roll 140, and the natural cooling action, and will not bend and sag again in the path from the transition roll group 150 to the annealing furnace. At this time, the glass ribbon 400 can travel to the transition roll group 150 while maintaining a flat surface. Then, the glass ribbon 400 passing through the first turning roll 140 travels horizontally on the transition roll group 150 and finally enters the annealing furnace.

[0044] For the convenience of understanding, the first preset angle is denoted as a (see Figure 2As shown in a). The first preset angle is the angle between the glass belt 400 and the horizontal plane in the path between the first cooling roller 130 and the first turning roller 140, and the angle is selected as the angle formed by the horizontal plane and the surface of the glass belt 400 (i.e., the side not in contact with the first cooling roller 130). The present invention analyzes the glass belt 400 in the path between the first cooling roller 130 and the first turning roller 140. Although it has been mentioned above that the two sides of the glass belt 400 are not prone to bending and sagging in this path, if the flatness of the glass belt 400 in this path is relatively high (i.e., the angle between the glass belt 400 and the horizontal plane is small), then the two sides of the glass belt 400 may still bend and sag. In this regard, in order to avoid the edge of the glass belt 400 from undergoing bending deformation between the first cooling roller 130 and the first turning roller 140, the glass belt 400 passing through the first cooling roller 130 is controlled to travel to the first turning roller 140 at the first preset angle. Specifically, the range of the first preset angle is 95 degrees to 105 degrees. In this way, since the angle between the glass belt 400 and the horizontal plane is large, the two sides of the glass belt 400 will not bend and sag when traveling between the first cooling roller 130 and the first turning roller 140. If the first preset angle is less than 95 degrees, the contact area between the glass belt 400 and the first turning roller 140 will be too large, which will cause too much heat of the glass belt 400 to be transferred to the first turning roller 140, resulting in a rapid increase in the temperature of the first turning roller 140 and a greater risk of sticking to the roller. If the first preset angle is greater than 105 degrees, the flatness of the glass belt 400 is relatively high, and the two side edges of the glass belt 400 may bend and sag under the action of its own gravity, causing the two sides of the glass belt 400 behind the roller to form wavy edges, resulting in an uneven surface of the glass belt 400 and affecting the glass forming quality. Thus, by providing the first cooling roller 130 and the first turning roller 140 that enable the glass belt 400 to travel at the first preset angle (range of 95 degrees to 105 degrees), the risk of sticking to the roller can be effectively reduced, and the edge of the glass belt 400 can be prevented from undergoing bending deformation, avoiding the formation of wavy edges on both sides of the glass belt 400, improving the flatness of the glass belt 400, and ensuring the glass forming quality. In addition, the initial angle is the angle between the glass belt 400 and the horizontal plane in the path between the calender roll pair 120 and the first cooling roller 130, and the angle is selected as the angle formed by the horizontal plane and the surface of the glass belt 400 (i.e., the side not in contact with the first cooling roller 130). In one embodiment, the range of the initial angle is 90 degrees to 135 degrees. Specifically, the initial angle can be adjusted according to the actual working conditions, as long as it does not affect the output of the glass belt 400 from the roll gap 121 and does not affect the normal operation of the calender roll pair 120, and no specific limitation is imposed on the initial angle.

[0045] Continue to refer to Figure 1, in one embodiment, the first turning roller 140 is disposed above the transition roller group 150, and a shaping gap 160 is formed between the first turning roller 140 and the transition roller group 150. The first turning roller 140 and the transition roller group 150 cooperate to ensure that the glass ribbon 400 is output smoothly from the shaping gap 160. In another embodiment, the transition roller group 150 is arranged to extend in the horizontal direction. The transition roller group 150 includes a plurality of transition rollers 151 arranged side by side. The connecting line of the rotation axes of the plurality of transition rollers 151 is located on a horizontal plane. A shaping gap 160 is formed between the first turning roller 140 and one of the transition rollers 151 located at the end. In another embodiment, the transition roller group 150 is arranged to extend obliquely to the horizontal direction. The connecting line of the rotation axes of the plurality of transition rollers 151 is arranged at an angle to the horizontal plane. A shaping gap 160 is formed between the first turning roller 140 and one of the transition rollers 151 located at the end. The transition roller group 150 being inclined to the horizontal direction can be set according to the position of the next process to cooperate with transporting the glass ribbon 400 to the appropriate station.

[0046] In one embodiment, the first turning roller 140 is disposed directly above one of the transition rollers 151 located at the end. The first turning roller 140 is disposed on the upper side of the glass ribbon 400, and one of the transition rollers 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 group 150. During this process, the first turning roller 140 and one of the transition rollers 151 located at the end rotate in opposite directions to simultaneously roll-press the glass ribbon 400, thereby improving the flatness of the glass ribbon 400. Thereafter, the glass ribbon 400 advances forward under the limiting action of the remaining plurality of transition rollers 151 until it enters the annealing furnace.

[0047] Refer to again Figure 1 , in one embodiment, the calendering and forming device 100 further includes a first lifting mechanism 170 and a second lifting mechanism 180. Both the first lifting mechanism 170 and the second lifting mechanism 180 are installed on the frame 110. The first lifting mechanism 170 is in driving connection with the first cooling roller 130. The first lifting mechanism 170 is used to drive the first cooling roller 130 to rise or fall. The second lifting mechanism 180 is in driving connection with the first turning roller 140. The second lifting mechanism 180 is used to drive the first turning roller 140 to rise or fall. The first lifting mechanism 170 and the second lifting mechanism 180 cooperate to facilitate controlling the first cooling roller 130 and the first turning roller 140 to move to a preset position, so that the glass ribbon 400 passing through the first cooling roller 130 travels to the first turning roller 140 at a first preset angle.

[0048] In one embodiment, both the first lifting mechanism 170 and the second lifting mechanism 180 are hydraulic cylinder structures, but this is not limited thereto. In other embodiments, both the first lifting mechanism 170 and the second lifting mechanism 180 can 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 means of a screw rod and a hand wheel, and realize the rising or falling of the roller by rotating the hand wheel forward or backward. The driving modes of the first lifting mechanism 170 and the second lifting mechanism 180 are not specifically limited.

[0049] In the calendering device 100 provided by the embodiment of the present invention, the calendering pair of rollers 120 and the transition roller group 150 are both installed on the frame 110. A pair of roller gaps 121 are provided between the calendering pair of rollers 120. The calendering pair of rollers 120 are used to calender the glass melt into a glass ribbon 400 and output the glass ribbon 400 from the pair of roller gaps 121. The transition roller group 150 is used to feed the glass ribbon 400 into the annealing furnace. The first cooling roller 130 and the transition roller group 150 are arranged on the lower side of the glass ribbon 400 and can both contact the glass ribbon 400 when the glass ribbon 400 travels to the corresponding position. The first turning roller 140 is arranged on the upper side of the glass ribbon 400 and can contact the glass ribbon 400 when the glass ribbon 400 travels to the corresponding position. The glass ribbon 400 passing through the first cooling roller 130 travels to the first turning roller 140 at a first preset angle, and the range of the first preset angle is 95 degrees to 105 degrees. Compared with the prior art, since the calendering device 100 provided by the present invention adopts the first cooling roller 130 and the first turning roller 140 that enable the glass ribbon 400 to travel at a first preset angle, it can prevent the edge of the glass ribbon 400 from bending and deforming, avoid forming wavy edges on both sides of the glass ribbon 400, improve the flatness of the glass ribbon 400, and ensure the glass forming quality. This makes the products of the glass production line 10 have good quality and high yield.

[0050] Second Embodiment

[0051] See Figure 3-4 , the embodiment of the present invention provides a calendering device 100. Compared with the first embodiment, the difference in this embodiment is that the calendering device 100 further includes a second cooling roller 190 and a third lifting mechanism 200.

[0052] In one embodiment, the third lifting mechanism 200 is installed on the frame 110 and is in driving connection with the second cooling roller 190. The third lifting mechanism 200 is used to drive the second cooling roller 190 to rise or fall, so that the second cooling roller 190 approaches or moves away from the glass belt 400. The second cooling roller 190 is used to further cool the glass belt 400 after cooling water is introduced, and reduce the temperature of the glass belt 400. Specifically, the second cooling roller 190 is arranged on the lower side of the glass belt 400 and can contact the glass belt 400 when the glass belt 400 travels to the corresponding position. The rotation direction of the second cooling roller 190 is along the traveling direction of the glass belt 400. The second cooling roller 190 can be used as either a driving roller or a driven roller.

[0053] Referring to Figure 5 , in one embodiment, the calendering and forming 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 used to detect the real-time temperature of the glass belt 400 before entering the first turning roller 140 and send the real-time temperature to the controller 220. The controller 220 is used to control the third lifting mechanism 200 to drive the second cooling roller 190 to rise until it fits with the glass belt 400 when the real-time temperature is greater than the preset temperature range, so as to use the second cooling roller 190 to cool the glass belt 400. Specifically, when the real-time temperature of the glass belt 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 belt 400 is relatively large, increasing the risk of the glass belt 400 sticking to the first turning roller 140. If the real-time temperature remains greater than the preset temperature all the time, the risk of sticking will continue to increase, resulting in the sticking phenomenon. Therefore, in order 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 belt 400, so as to further reduce the temperature of the glass belt 400, make the real-time temperature not higher than the preset temperature, control the temperature within a suitable range, reduce the risk of sticking, and further prevent the sticking phenomenon from occurring.

[0054] In one embodiment, the preset temperature range is from 650 degrees Celsius to 700 degrees Celsius and all ranges and sub-ranges therebetween, such as from 650 degrees Celsius to 660 degrees Celsius, from 660 degrees Celsius to 670 degrees Celsius, from 670 degrees Celsius to 680 degrees Celsius, from 680 degrees Celsius to 690 degrees Celsius, from 690 degrees Celsius to 700 degrees Celsius, from 650 degrees Celsius to 670 degrees Celsius, from 660 degrees Celsius to 680 degrees Celsius, from 670 degrees Celsius to 690 degrees Celsius, from 680 degrees Celsius to 700 degrees Celsius, etc. If the real-time temperature of the glass ribbon 400 before entering the first turning roller 140 is lower than 650 degrees Celsius, cold cracks are likely to occur after the glass ribbon 400 is turned by the first turning roller 140, affecting the forming quality of the glass; if the real-time temperature of the glass ribbon 400 before entering the first turning roller 140 is higher than 700 degrees Celsius, the phenomenon of sticking rollers is likely to occur when the glass ribbon 400 passes through the first turning roller 140, also affecting the forming quality of the glass.

[0055] In one embodiment, the second cooling roller 190 is arranged on the side of the first cooling roller 130 away from the first turning roller 140. During the traveling process of the glass ribbon 400, the glass ribbon 400 sequentially passes through the second cooling roller 190, the first cooling roller 130, the first turning roller 140 and the transition roller group 150, and finally enters the annealing furnace. However, it is not limited thereto. In other embodiments, the second cooling roller 190 can also be arranged on the side of the first cooling roller 130 close to the first turning roller 140, that is, the second cooling roller 190 is arranged between the first cooling roller 130 and the first turning roller 140. At this time, the glass ribbon 400 sequentially passes through the first cooling roller 130, the second cooling roller 190, the first turning roller 140 and the transition roller group 150, and the setting position of the second cooling roller 190 is not specifically limited.

[0056] Continue to refer to Figure 3, in this embodiment, in the horizontal direction perpendicular to the first cooling roller 130, the second cooling roller 190, and the first turning roller 140, the distance range between the second cooling roller 190 and the first cooling roller 130 is from 5 mm to 15 mm and all ranges and sub-ranges therebetween. The calculation method of the distance between the second cooling roller 190 and the first cooling roller 130 is as follows: Determine the tangent line X of the second cooling roller 190 perpendicular to the horizontal plane and close to the first cooling roller 130, and determine the tangent line Y of the first cooling roller 130 perpendicular to the horizontal plane and close to the second cooling roller 190, and calculate the horizontal distance between the tangent line X and the tangent line Y. 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 distance range between the first cooling roller 130 and the first turning roller 140 is from 5 mm to 15 mm. The calculation method of the distance between the first cooling roller 130 and the first turning roller 140 is the same and will not be elaborated here. A reasonable inter-roll gap can ensure that the glass belt 400 does not get stuck during the feeding process, and ensure the smoothness and stability of the feeding of the glass belt 400.

[0057] In this embodiment, the numbers of the second cooling roller 190 and the third lifting mechanism 200 are both one, but it is not limited thereto. In other embodiments, the numbers of the second cooling roller 190 and the third lifting mechanism 200 can also be multiple. Each third lifting mechanism 200 is connected to a second cooling roller 190, and multiple second cooling rollers 190 act together to further improve the cooling effect on the glass belt 400 and ensure that the real-time temperature of the glass belt 400 before entering the first turning roller 140 is within the preset temperature range.

[0058] The beneficial effects of the calendering and forming device 100 provided by the embodiments of the present invention are the same as those of the first embodiment and will not be elaborated here.

[0059] Third Embodiment

[0060] Please refer to Figure 6 and Figure 7 , the embodiments of the present invention provide a calendering and forming device 100. Compared with the first embodiment, the difference in this embodiment is that the calendering and forming device 100 further includes a second turning roller 230 and a fourth lifting mechanism 240.

[0061] In this embodiment, the fourth lifting mechanism 240 is installed on the frame 110 and is in transmission connection with the second turning roller 230. The fourth lifting mechanism 240 is used to drive the second turning roller 230 to rise or fall, so that the second turning roller 230 is away from or close to the glass belt 400. The second turning roller 230 is used to turn the glass belt 400 to adjust the traveling direction of the glass belt 400. Specifically, the second turning roller 230 is arranged on the upper side of the glass belt 400 and can contact the glass belt 400 when the glass belt 400 travels to the corresponding position. The rotation direction of the second turning roller 230 is along the traveling direction of the glass belt 400. The second turning roller 230 can be used as a driving roller or a driven roller.

[0062] In this embodiment, no shaping gap 160 is 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 act together to ensure that the glass belt 400 is output smoothly from the shaping gap 160.

[0063] In one embodiment, the second turning roller 230 is arranged directly above a transition roller 151 at the end. The second turning roller 230 is arranged on the upper side of the glass belt 400, and a transition roller 151 at the end is arranged on the lower side of the glass belt 400. During the shaping process of the glass belt 400, the glass belt 400 enters the shaping gap 160 between the second turning roller 230 and the transition roller group 150. During this process, the second turning roller 230 and a transition roller 151 at the end rotate in opposite directions to roll-press the glass belt 400 at the same time, so as to improve the flatness of the glass belt 400. Then, the glass belt 400 travels forward under the limiting action of the remaining transition rollers 151 until it enters the annealing furnace.

[0064] In this embodiment, the first turning roller 140 is arranged lower than the second turning roller 230. The glass belt 400 passing through the first turning roller 140 travels to the second turning roller 230 at a second preset angle. The second preset angle is the angle between the glass belt 400 and the horizontal plane on the path between the first turning roller 140 and the second turning roller 230, and the angle is selected as the angle formed by the horizontal plane and the side of the glass belt 400 that is not in contact with the first turning roller 140. (See Figure 7As shown in c). Specifically, the range of the second preset angle is 165 degrees to 175 degrees, so that the glass belt 400 has a rapid change of first downward and then upward during the traveling process, that is, the glass belt 400 first feeds obliquely downward, then feeds obliquely upward, and finally feeds horizontally under the action of the transition roller group 150. In this way, during the feeding process of the glass belt 400, the first turning roller 140, the second turning roller 230 and the transition roller group 150 act together to change the feeding path direction of the glass belt 400 twice in a short time (once from obliquely downward to obliquely upward, and the other time from obliquely upward to horizontal). On the one hand, the contact area between the glass belt 400 and the roller surface of the first turning roller 140 is increased, and the auxiliary cooling effect of the first turning roller 140 on the glass belt 400 is improved. On the other hand, the second turning roller 230 continuously presses the glass belt 400 during the feeding process, making the surface of the glass belt 400 smoother.

[0065] The beneficial effects of the calendering forming device 100 provided by the embodiments of the present invention are the same as those of the first embodiment, and will not be described in detail here.

[0066] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

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, wherein, 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 1, wherein 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 be lifted and lowered, and the second lifting mechanism is connected to the first steering roller for driving the first steering roller to be lifted and lowered.

5. The calendering device according to claim 1, 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.

6. The calendering device according to claim 5, wherein, The calendering device also includes a temperature sensor and a controller, wherein the temperature sensor is electrically connected to the controller, and the temperature sensor is used 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 used 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.

7. The calendering device according to claim 6, characterized in that, The preset temperature range is 650 degrees Celsius to 700 degrees Celsius.

8. The calendering device according to claim 5, characterized in that The second cooling roller is arranged on a side of the first cooling roller away from the first turning roller.

9. The calendering device according to claim 5, characterized in that, There are multiple second cooling rollers and multiple third lifting mechanisms, and each third lifting mechanism is connected to one second cooling roller.

10. 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.

11. The calendering apparatus according to claim 10, wherein, The first turning roller is arranged lower than the second turning roller, and the glass belt passing through the first turning roller travels to the second turning roller at a second preset angle, and the range of the second preset angle is 165 degrees to 175 degrees.

12. The calendering device according to claim 10, wherein The calendering and forming device further includes a fourth lifting mechanism, and the fourth lifting mechanism is installed on the frame and is in transmission connection with the second turning roller.

13. A glass production line, characterized in that, It includes the calendering and forming device according to any one of claims 1 to 12.

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