Coated curved glass manufacturing method and device

Abstract

The invention discloses a method and a device for manufacturing coated curved glass. The manufacturing method of the coated curved glass comprises the following steps: providing plate glass with a first surface and a second surface which are back to back; coating a film on the first surface; heating the coated plate glass, and heating the plate glass until the plate glass can be bent; stopping heating the glass, blowing first preset air to the first surface, and bending the plate glass at the same time; and after the bending of the glass is stopped, blowing second preset wind to the first surface, and blowing third preset wind to the second surface. According to the manufacturing method, the first preset air is blown to the first surface in advance, so that the first surface can be cooled in advance, and after bending forming, the second preset air and the third preset air are blown to the first surface and the second surface at the same time, so that the cooling rates of the first surface and the second surface are consistent; therefore, the dispersion process of internal stress is improved, and the deformation condition of side edges is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of glass processing, and in particular to a method and device for manufacturing coated curved glass. Background Art

[0002] Curved glass is a common type of glass. The common processing method of curved glass is to cut the original glass, transfer the glass to the heating furnace for heating and softening through the upper table, and then bend it in the curved wind grid and blow it to cool it, thus forming a curved glass with two arc edges and two straight edges. With the development of society, the requirements for curved glass are also increasing, so coated curved glass has appeared. Coated curved glass is usually coated on the inside of the glass to meet various usage requirements. However, processing coated curved glass using the existing processing methods for curved glass will cause serious warping and deformation of the straight edges. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a method for manufacturing coated curved glass, which can effectively improve the side deformation of the coated curved glass.

[0004] The present invention also provides a coated curved glass manufacturing device applied to the above manufacturing method.

[0005] According to the first aspect of the present invention, a method for manufacturing coated curved glass includes: providing flat glass, the flat glass having a first surface and a second surface facing away from each other; coating the first surface; heating the coated flat glass to raise the temperature of the flat glass to a point where it can be bent; stopping heating the glass, blowing a first preset wind on the first surface, and bending the flat glass at the same time; after stopping bending the glass, blowing a second preset wind on the first surface, and blowing a third preset wind on the second surface, so that the bent glass is shaped into the coated curved glass, the first preset wind, the second preset wind, and the third preset wind are all used to cool the glass.

[0006] The method for manufacturing coated curved glass according to the embodiment of the present invention has at least the following beneficial effects: since the inner side of the curved glass is coated, there are differences in material and physical properties between the first surface and the second surface, and the heating and cooling rates of the first surface are slower than those of the second surface. Therefore, in the prior art, after entering the wind grille for bending, during the process of blowing air to cool and shape, the cooling rates of the two surfaces are inconsistent, resulting in inconsistent deformation degrees, making the internal stress distribution uneven, so that the two sides are warped and deformed. In the manufacturing method of the present invention, from the time when the glass enters the wind grille until the glass is bent and deformed, the first surface is blown with the first preset wind in advance, so that the first surface can be cooled in advance, and after the bending is formed, the second preset wind and the third preset wind are blown on the first surface and the second surface at the same time, so that the cooling rates of the first surface and the second surface can be consistent, thereby improving the dispersion process of the internal stress and improving the deformation of the side. It should be noted that blowing the first preset wind on the first surface in advance means blowing the first preset wind before the glass is bent.

[0007] According to some embodiments of the present invention, the fan power corresponding to the first preset wind is P1, and the fan power corresponding to the second preset wind is P2; the coated curved glass is tempered glass, 20% P2≤P1≤30% P2, or the coated curved glass is semi-tempered glass, 70% P2≤P1≤100% P2.

[0008] According to some embodiments of the present invention, the coated curved glass includes two arc edges arranged opposite to each other and two side edges arranged opposite to each other, the two ends of each of the arc edges are respectively connected to the two side edges, and the two ends of each of the side edges are respectively connected to the two arc edges; after the coated curved glass is shaped, the manufacturing method also includes the following steps: detecting the deviation between the arc edge and the target arc, detecting the flatness of the four endpoints of the glass, and detecting the curvature of the side edge relative to the line connecting the two ends of the side edge.

[0009] According to some embodiments of the present invention, detecting the deviation between the arc edge and the target arc includes the following steps: placing the coated curved glass upright on a horizontal plane with the plane where any one of the arc edges is located as the bottom surface or the top surface; preparing an arc template, wherein the arc template has a curved edge having the same curvature as the target arc; aligning the two ends of the curved edge with the two ends of the arc edge serving as the top surface, and measuring the gap value of the arc edge relative to each position of the curved edge, wherein the gap value is the deviation.

[0010] According to some embodiments of the present invention, when the arc edge is convex relative to the convex surface of the curved edge, the deviation is a positive deviation, and when the arc edge is convex relative to the concave surface of the curved edge, the deviation is a negative deviation. After detecting the deviation, the manufacturing method further includes the following steps: When the deviation is a positive deviation and the maximum value of the deviation is ≥5mm, the blowing time of the third preset wind is delayed or the blowing time of the second preset wind is advanced; When the deviation is a positive deviation and the maximum value of the deviation is less than 5 mm, the fan power of the second preset wind speed is increased or the fan power of the third preset wind speed is reduced; When the deviation is a negative deviation and the maximum value of the deviation is ≥5mm, the blowing time of the third preset wind is advanced or the blowing time of the second preset wind is delayed; When the deviation is a negative deviation and the maximum value of the deviation is less than 5 mm, the fan power of the second preset wind speed is reduced or the fan power of the third preset wind speed is increased.

[0011] According to some embodiments of the present invention, detecting the curvature of the side relative to the line connecting the two ends of the side includes the following steps: connecting the two ends of the same side with a straight line, measuring the maximum gap of the side relative to the line as d, measuring the length of the side as L, and the curvature as k, k = (d / L) * 1000‰.

[0012] According to the second aspect of the present invention, a device for manufacturing coated curved glass is applied to the manufacturing method described in any one of the first aspect of the present invention, and the device comprises a heating furnace and a wind grille. The heating furnace comprises an inlet and an outlet, and the heating furnace is used to heat the glass. The wind grille is connected to the outlet, and the wind grille is used to bend the glass and blow air to the glass. The wind grille comprises an upper blowing device and a lower blowing device, and the upper blowing device is used to blow the first preset air and the second preset air to the first surface, and the lower blowing device is used to blow the third preset air to the second surface.

[0013] The coated curved glass manufacturing device according to the embodiment of the present invention has at least the following beneficial effects: the manufacturing device of the present invention heats the glass by using a heating furnace, and after heating, the glass enters the wind grid. From the time the glass enters the wind grid until the glass is bent and deformed, a first preset wind is blown on the first surface in advance, so that the first surface can be cooled in advance. After bending and forming, a second preset wind and a third preset wind are blown on the first surface and the second surface at the same time. In this way, the cooling rates of the first surface and the second surface can be consistent, thereby improving the dispersion process of the internal stress and improving the deformation condition of the side.

[0014] According to some embodiments of the present invention, the coated curved glass manufacturing device also includes a plurality of conveying rollers, which are arranged at intervals within the wind grid along the conveying direction, and the downblowing device includes a downblower, a lower air collecting box, a plurality of downblower pipes, and a plurality of downblower nozzles, each of the downblower pipes being connected to a downblower nozzle at one end close to the conveying roller, and being connected to the lower air collecting box at one end of the downblower pipe away from the conveying roller, and the downblower nozzle being arranged between two adjacent conveying rollers.

[0015] According to some embodiments of the present invention, the upper air blowing device includes an upper fan, an upper air collecting box, a plurality of upper air ducts and a plurality of upper air nozzles, each of the upper air ducts is connected to an upper air nozzle at one end close to the conveying roller, and the end of the upper air duct away from the conveying roller is connected to the upper air collecting box, and the upper air nozzles are spaced apart from the lower air nozzles and are distributed facing each other.

[0016] According to some embodiments of the present invention, the vertices of the plurality of conveying rollers jointly abut against the second surface, the plurality of conveying rollers are distributed along an arc line, the conveying rollers can move in a vertical direction to bend the glass, the upper air duct and the lower air duct can be bent so that the air outlet of the upper air nozzle is perpendicular to the first surface, and the air outlet of the lower air nozzle is perpendicular to the second surface.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 is an overall schematic diagram of a coated curved glass manufacturing device in one embodiment of the present invention; Figure 2 A schematic diagram of a first state of an air grille of a manufacturing device in an embodiment of the present invention; Figure 3 A schematic diagram of a second state of the wind grille of the manufacturing device in an embodiment of the present invention; Figure 4 A schematic diagram of a third state of the wind grille of the manufacturing device in an embodiment of the present invention; Figure 5 is a first stereoscopic view of the coated curved glass in an embodiment of the present invention; Figure 6 is a second stereoscopic view of the coated curved glass in the embodiment of the present invention; Figure 7 is a top view of the coated curved glass in an embodiment of the present invention; Figure 8 It is a front view of the coated curved glass in the embodiment of the present invention.

[0019] Figure numerals: coated curved glass manufacturing device 100, heating furnace 101, wind grille 102, upper sheet platform 103, lower sheet platform 104, inlet 105, outlet 106, upper air blowing device 201, lower air blowing device 202, conveying roller 203, flat glass 204, first surface 205, second surface 206, upper air collecting box 207, upper air duct 208, upper air nozzle 209, lower air collecting box 210, lower air duct 211, lower air nozzle 212, coated curved glass 301, arc edge 501, side edge 502, deviation 701, arc template 702, curved edge 703. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0022] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0024] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0025] refer to Figures 1 to 4 According to the first aspect of the present invention, a method for manufacturing a coated curved glass 301 includes: providing a flat glass 204, wherein the flat glass 204 has a first surface 205 and a second surface 206 facing each other; coating the first surface 205; heating the coated flat glass 204 (such as Figure 2 As shown), the flat glass 204 is heated to a temperature that can be bent; the heating of the glass is stopped, and a first preset wind is blown to the first surface 205, while bending the flat glass 204 (as shown Figure 3 As shown); after stopping the bending of the glass, the second preset wind is blown to the first surface 205, and the third preset wind is blown to the second surface 206, so that the bent glass is shaped into a coated curved glass 301, and the first preset wind, the second preset wind and the third preset wind are all used to cool the glass.

[0026] Since the inner side of the curved glass is coated, the first surface 205 and the second surface 206 have differences in material and physical properties, and the heating and cooling rates of the first surface 205 are slower than those of the second surface 206. Therefore, in the prior art, after entering the wind grille 102 for bending, during the process of blowing air to cool and shape, the cooling rates of the two surfaces are inconsistent, resulting in inconsistent deformation degrees, making the internal stress distribution uneven, so that the two side edges 502 are warped and deformed. In the manufacturing method of the present invention, from the time when the glass enters the wind grille 102 until the glass is bent and deformed, the first surface 205 is blown with the first preset air in advance, so that the first surface 205 can be cooled in advance, and after the bending is formed, the second preset air and the third preset air are blown with the first surface 205 and the second surface 206 at the same time, so that the cooling rates of the first surface 205 and the second surface 206 can be consistent, thereby improving the dispersion process of its internal stress and improving the deformation of the side edges 502.

[0027] In some embodiments of the present invention, the fan power corresponding to the first preset wind is P1, and the fan power corresponding to the second preset wind is P2; the coated curved glass 301 is tempered glass, 20% P2≤P1≤30% P2, or the coated curved glass 301 is semi-tempered glass, 70% P2≤P1≤100% P2. The first preset wind is selected at an appropriate power to effectively keep the cooling rate of the first surface 205 and the second surface 206 as consistent as possible in the subsequent cooling process. If the fan power of the first preset wind is too large, the cooling of the first surface 205 may be too fast. If the fan power of the first preset wind is too small, the cooling rate of the first surface 205 may still be slower than that of the second surface 206. Since the stress value requirement of tempered glass is greater than that of semi-tempered glass, the fan power requirement for the first preset wind cannot be too high. When P1>30% P2, the power of the first preset wind is too large, which will reduce the stress value of the formed coated curved glass 301 so that it cannot meet the requirement. It should be noted that the fan power requirements for the second preset wind for tempered glass and semi-tempered glass are also different, and the fan power requirement for the second preset wind for tempered glass is higher than that for semi-tempered glass.

[0028] refer to Figures 5 to 8 In some embodiments of the present invention, the coated curved glass 301 includes two arc edges 501 disposed opposite to each other and two side edges 502 disposed opposite to each other, the two ends of each arc edge 501 are respectively connected to the two side edges 502, and the two ends of each side edge 502 are respectively connected to the two arc edges 501; after the coated curved glass 301 is shaped, the manufacturing method further includes the following steps: detecting the deviation 701 between the arc edge 501 and the target arc, detecting the flatness of the four endpoints of the glass, and detecting the curvature of the side edge 502 relative to the line connecting the two ends of the side edge 502. Specifically, Figure 7 This is a schematic diagram for checking the deviation degree 701. Figure 6 This is a schematic diagram for checking flatness. Figure 8 By checking the deviation 701, flatness and curvature of the formed glass, the quality of the finished product can be known according to the numerical values, and the manufacturing equipment can be adjusted according to the degree of deviation to make the quality of the subsequently produced coated curved glass 301 higher.

[0029] It should be noted that, in some embodiments of the present invention, the flatness detection is as follows: Figure 6 As shown, after laying the glass flat, use two diagonal lines to connect the four end points of the glass diagonally. If the product is in an ideal state, there is no height difference between the two diagonal lines, that is, Figure 6 The height difference M in the equation is 0. If there is an inclination or unevenness, Figure 6The size of the height difference M can be used to know the flatness of the current product. In the subsequent bending process of the glass, a greater degree of bending is performed on the corners with lower heights to make the flatness of the subsequent products better.

[0030] refer to Figure 5 and Figure 7 In some embodiments of the present invention, detecting the deviation 701 between the arc edge 501 and the target arc includes the following steps: taking the plane where any arc edge 501 is located as the bottom surface or the top surface, placing the coated curved glass 301 upright on a horizontal plane; preparing an arc template 702, the arc template 702 having a curved edge 703 with the same curvature as the target arc; aligning the two ends of the curved edge 703 with the two ends of the arc edge 501 as the top surface, and measuring the gap value of the arc edge 501 relative to each position of the curved edge 703, the gap value being the deviation 701. In an ideal state, the arc edge 501 should fit perfectly with the curved edge 703, but there will be deviations in actual products, so detecting the deviation 701 can intuitively know the degree of deviation and the direction of deviation, for example, Figure 7 The arc edge 501 of the coated curved glass 301 shown is protruding relative to the convex surface of the curved edge 703, so it is a positive deviation. Therefore, the fan power in the wind grid 102 or the movement of the conveying roller 203 can be adjusted according to the current product to make the deviation 701 of the subsequent product smaller and improve the product quality.

[0031] refer to Figure 7 In some embodiments of the present invention, when the arc edge 501 is convex relative to the convex surface of the curved edge 703, the deviation 701 is a positive deviation, and when the arc edge 501 is convex relative to the concave surface of the curved edge 703, the deviation 701 is a negative deviation. After detecting the deviation 701, the manufacturing method further includes the following steps: When the deviation 701 is a positive deviation and the maximum value of the deviation 701 is ≥5mm, the blowing time of the third preset wind is delayed or the blowing time of the second preset wind is advanced; When the deviation 701 is a positive deviation and the maximum value of the deviation 701 is less than 5 mm, the fan power of the second preset wind speed is increased or the fan power of the third preset wind speed is reduced; When the deviation 701 is a negative deviation and the maximum value of the deviation 701 is ≥5mm, the blowing time of the third preset wind is advanced or the blowing time of the second preset wind is delayed; When the deviation 701 is a negative deviation and the maximum value of the deviation 701 is less than 5 mm, the fan power of the second preset wind speed is reduced or the fan power of the third preset wind speed is increased.

[0032] First, we discuss the deviation 701 as a positive deviation (such as Figure 7 If a positive deviation occurs, it means that the coated curved glass 301 is too curved, that is, when the glass is as shown in FIG. Figure 3 In the state shown, the two ends of the glass are too warped. At this time, it is necessary to reduce the curvature of the two ends of the glass to reduce the deviation 701. This phenomenon can be effectively alleviated by blowing and cooling the second preset wind on the side of the first surface 205 in advance or increasing the fan power. Similarly, delaying the blowing of the third preset wind on the side of the second surface 206 or reducing the fan power of the third preset wind is equivalent to a mirror operation, which can achieve the same technical effect. Whether to control the blowing time or the fan power depends on the deviation degree of the glass. When the maximum value of the deviation degree 701 is ≥5mm, the deviation degree 701 is too large, and the method of controlling the blowing time is used, because the early and late blowing time has a more significant impact on the bending degree of the glass during shaping. Blowing the second preset wind in advance or delaying the third preset wind can significantly reduce the bending degree of both ends of the glass; when the maximum value of the deviation degree 701 is <5mm, the deviation degree 701 is small, and the method of controlling the fan power is used. The change in the size of the fan power has a relatively small effect on the bending degree of the glass compared to the blowing time. Increasing the fan power of the second preset wind or reducing the fan power of the third preset wind can make a small adjustment to the bending degree of both ends of the glass. In this way, the fan blowing time and power of the wind grille 102 can be adjusted according to the deviation degree 701 of the current product to improve the quality of the subsequent products. The adjustment method and principle for negative deviation are the same as those for positive deviation, and will not be repeated here.

[0033] refer to Figure 7 In some embodiments of the present invention, detecting the curvature of the side 502 relative to the line connecting the two ends of the side 502 includes the following steps: connecting the two ends of the same side 502 with a straight line, measuring the maximum gap of the side 502 relative to the line as d, measuring the length of the side 502 as L, and the curvature as k, k = (d / L) * 1000‰. In this way, the curvature of the current product can be measured, and the wind grid 102 can be adjusted according to the curvature value to improve the quality of the subsequent manufactured products. Specifically, in some embodiments of the present invention, k is required to be ≤ 1.5‰. It can be seen from the following embodiments that using the manufacturing method of the embodiment of the present invention, blowing the first preset wind on the first surface 205 of the glass can effectively solve the problem of excessive curvature of the side 502 and reduce the deformation degree of the side 502. It should be noted that the preset wind power in the table refers to the fan power corresponding to the preset wind, and the power value is a percentage relative to the rated power of the fan itself. Therefore, the ratio of the power of the first preset wind to the power of the second preset wind in the following does not conflict with the above-mentioned relationship between P1 and P2.

[0034]

[0035] According to the second aspect of the present invention, the coated curved glass manufacturing device 100 is applied to any one of the manufacturing methods of the first aspect of the present invention, and the device includes a heating furnace 101 and a wind grid 102. The heating furnace 101 includes an inlet 105 and an outlet 106, and the heating furnace 101 is used to heat the glass. The wind grid 102 is connected to the outlet 106, and the wind grid 102 is used to bend the glass and blow air to the glass. The wind grid 102 includes an upper blowing device 201 and a lower blowing device 202, and the upper blowing device 201 is used to blow the first preset air and the second preset air to the first surface 205, and the lower blowing device 202 is used to blow the third preset air to the second surface 206. The manufacturing device of the present invention heats the glass by using a heating furnace 101, and after heating, the glass enters the wind grid 102. From the time the glass enters the wind grid 102 until the glass is bent and deformed, the first surface 205 is blown with a first preset wind in advance, so that the first surface 205 can be cooled in advance. After the glass is bent and formed, the first surface 205 and the second surface 206 are blown with a second preset wind and a third preset wind at the same time. In this way, the cooling rates of the first surface 205 and the second surface 206 are consistent, thereby improving the dispersion process of the internal stress and improving the deformation condition of the side edge 502.

[0036] It should be noted that the reference Figure 1 In some embodiments of the present invention, the coated curved glass manufacturing device 100 also includes an upper platen 103 and a lower platen 104. The upper platen 103 is arranged upstream of the heating furnace 101, and the lower platen 104 is arranged downstream of the wind grid 102, so that the glass can be better transported and processed.

[0037] refer to Figure 2 In some embodiments of the present invention, the coated curved glass manufacturing device 100 further includes a plurality of conveying rollers 203, which are arranged at intervals in the wind grid 102 along the conveying direction. The downwinding device 202 includes a downwinder (not shown in the figure), a lower air collecting box 210, a plurality of downwind pipes 211, and a plurality of downwind nozzles 212. The end of each downwind pipe 211 close to the conveying roller 203 is connected to a downwind nozzle 212, and the end of the downwind pipe 211 away from the conveying roller 203 is connected to the lower air collecting box 210. The downwind nozzle 212 is arranged between two adjacent conveying rollers 203. Such a design can maximize the use of the space in the wind grid 102, so that the downwind nozzles 212 and the conveying rollers 203 are closely arranged, and the downwind nozzles 212 can cool the surface of the glass more evenly. The design of the plurality of downwind nozzles 212 also enables the third preset wind to be blown more evenly to various places of the second surface 206.

[0038] It should be noted that the reference Figure 1In some embodiments of the present invention, the upper platen 103, the heating furnace 101 and the lower platen 104 are all provided with conveying rollers 203, so that the glass can be better conveyed during the manufacturing process, thereby improving the conveying and processing efficiency.

[0039] refer to Figure 2 In some embodiments of the present invention, the upper air blowing device 201 includes an upper air blower (not shown in the figure), an upper air collecting box 207, a plurality of upper air pipes 208, and a plurality of upper air nozzles 209. The end of each upper air pipe 208 close to the conveying roller 203 is connected to an upper air nozzle 209, and the end of the upper air pipe 208 away from the conveying roller 203 is connected to the upper air collecting box 207. The upper air nozzles 209 and the lower air nozzles 212 are spaced apart from each other. The design of the plurality of upper air nozzles 209 enables the first preset air and the second preset air to be blown toward the first surface 205 more evenly. The spaced apart distribution of the upper air nozzles 209 and the lower air nozzles 212 also enables the first surface 205 and the second surface 206 to be cooled by air blowing at the same position, thereby improving product quality.

[0040] refer to Figures 2 to 4 In some embodiments of the present invention, the vertices of a plurality of conveying rollers 203 are jointly against the second surface 206, and the plurality of conveying rollers 203 are distributed along an arc line. The conveying rollers 203 can move in the vertical direction to bend the glass, and the upper air duct 208 and the lower air duct 211 can be bent so that the air outlet of the upper air nozzle 209 is perpendicular to the first surface 205, and the air outlet of the lower air nozzle 212 is perpendicular to the second surface 206. The plurality of conveying rollers 203 participate in the extrusion and bending of the heated and softened glass, so that the bending degree of each part of the glass can be more accurately controlled, and there is no need to set up an additional bending device, thereby reducing the processing cost. The bendability of the upper air duct 208 and the lower air duct 211 can make the upper air nozzle 209 and the lower air nozzle 212 as perpendicular as possible to the first surface 205 and the second surface 206 of the glass, so that the blowing effect at each position of the glass is as uniform as possible, thereby improving the product quality. It should be noted that, specifically, with reference to Figures 1 to 4 In some embodiments of the present invention, the glass processing and forming process is as follows: First, the glass is Figure 1 The heating furnace 101 is heated to a bending temperature, and then transported to the wind grille 102. The state of the wind grille 102 is changed by Figure 2 The shown Figure 3 As shown, in this process, the conveying roller 203 bends to deform the glass, and the upper air duct 208 and the lower air duct 211 bend so that the air outlets of the upper air nozzle 209 and the lower air nozzle 212 are perpendicular to the first surface 205 and the second surface 206. After deformation and blowing cooling and shaping, the conveying roller 203 and the lower air nozzle 212 return to the horizontal position, that is, Figure 4The glass is continuously transported by the conveying roller 203 to the unloading platform 104 for unloading, and the upper air duct 208 and the upper air nozzle 209 automatically return to the horizontal position ( Figure 2 status shown).

[0041] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A method for manufacturing coated curved glass, characterized in that: include: Providing a flat glass having a first surface and a second surface facing away from each other; coating a film on the first surface; Heating the coated flat glass to raise the temperature of the flat glass to a temperature that allows it to be bent; Stop heating the glass, blow a first preset wind to the first surface, and bend the flat glass at the same time; After stopping the bending of the glass, a second preset wind is blown to the first surface and a third preset wind is blown to the second surface, so that the bent glass is shaped into the coated curved glass, and the first preset wind, the second preset wind and the third preset wind are all used to cool the glass.

2. The method for manufacturing coated curved glass according to claim 1, characterized in that: The wind turbine power corresponding to the first preset wind is P1, and the wind turbine power corresponding to the second preset wind is P2; The coated curved glass is tempered glass, 20% P2≤P1≤30% P2, or the coated curved glass is semi-tempered glass, 70% P2≤P1≤100% P2.

3. The method for manufacturing coated curved glass according to claim 1, characterized in that: The coated curved glass comprises two arc edges and two side edges arranged opposite to each other, the two ends of each arc edge are respectively connected to the two side edges, and the two ends of each side edge are respectively connected to the two arc edges; After the coated curved glass is shaped, the manufacturing method further includes the following steps: detecting the deviation between the arc edge and the target arc, detecting the flatness of the four endpoints of the glass, and detecting the curvature of the side relative to the line connecting the two ends of the side.

4. The method for manufacturing coated curved glass according to claim 3, characterized in that: The step of detecting the deviation between the arc edge and the target arc comprises the following steps: Taking the plane where any of the arc edges is located as the bottom surface or the top surface, the coated curved glass is placed upright on a horizontal plane; Preparing an arc template, wherein the arc template has a curved edge consistent with the curvature of the target arc; The two ends of the curved edge are aligned with the two ends of the arc edge as the top surface, and the gap value of the arc edge relative to each position of the curved edge is measured, and the gap value is the deviation degree.

5. The method for manufacturing coated curved glass according to claim 4, characterized in that: When the arc edge is protruding relative to the convex surface of the curved edge, the deviation is a positive deviation, and when the arc edge is protruding relative to the concave surface of the curved edge, the deviation is a negative deviation. After detecting the deviation, the manufacturing method further includes the following steps: When the deviation is a positive deviation and the maximum value of the deviation is ≥5mm, the blowing time of the third preset wind is delayed or the blowing time of the second preset wind is advanced; When the deviation is a positive deviation and the maximum value of the deviation is less than 5 mm, the fan power of the second preset wind speed is increased or the fan power of the third preset wind speed is reduced; When the deviation is a negative deviation and the maximum value of the deviation is ≥5mm, the blowing time of the third preset wind is advanced or the blowing time of the second preset wind is delayed; When the deviation is a negative deviation and the maximum value of the deviation is less than 5 mm, the fan power of the second preset wind speed is reduced or the fan power of the third preset wind speed is increased.

6. The method for manufacturing coated curved glass according to claim 3, characterized in that: Detect the curvature of the side relative to the line connecting the two ends of the side The method comprises the following steps: connecting two ends of the same side with a straight line, measuring the maximum gap between the side and the line as d, measuring the length of the side as L, and the curvature as k, where k=(d / L)*1000‰.

7. A device for manufacturing coated curved glass, characterized in that: The device is applied to the manufacturing method according to any one of claims 1 to 6, and the device comprises: A heating furnace, the heating furnace comprising an inlet and an outlet, the heating furnace being used to heat the glass; A wind grille is connected to the outlet, the wind grille is used to bend the glass and blow air to the glass, the wind grille includes an upper blowing device and a lower blowing device, the upper blowing device is used to blow the first preset wind and the second preset wind to the first surface, and the lower blowing device is used to blow the third preset wind to the second surface.

8. The coated curved glass manufacturing device according to claim 7, characterized in that: It also includes a plurality of conveying rollers, which are arranged at intervals in the wind grid along the conveying direction. The downblowing device includes a downblower, a lower air collecting box, a plurality of downwind pipes and a plurality of downwind nozzles. Each downwind pipe is connected to a downwind nozzle at one end close to the conveying roller, and is connected to the lower air collecting box at one end away from the conveying roller. The downwind nozzle is arranged between two adjacent conveying rollers.

9. The coated curved glass manufacturing device according to claim 8, characterized in that: The upper air blowing device includes an upper fan, an upper air collecting box, a plurality of upper air ducts and a plurality of upper air nozzles. The end of each upper air duct close to the conveying roller is connected to an upper air nozzle, and the end of the upper air duct away from the conveying roller is connected to the upper air collecting box. The upper air nozzles and the lower air nozzles are spaced apart and distributed facing each other.

10. The coated curved glass manufacturing device according to claim 9, characterized in that: The vertices of the multiple conveying rollers jointly abut against the second surface, and the multiple conveying rollers are distributed along an arc line. The conveying rollers can move in the vertical direction to bend the glass, and the upper air duct and the lower air duct can be bent so that the air outlet of the upper air nozzle is perpendicular to the first surface, and the air outlet of the lower air nozzle is perpendicular to the second surface.

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