Curved glass forming device and production line having the same

Abstract

This application relates to the technical field of curved glass forming, and particularly to a curved glass forming device and a production line having the same. The curved glass forming device includes a filling mold, a high-temperature air extraction mechanism, and a gas heating and filling mechanism. The filling mold has a cavity for accommodating a glass sheet, and the glass sheet divides the cavity into a first space and a second space. The high-temperature air extraction mechanism includes a support assembly and an air extraction assembly. The support assembly has a support surface adapted to the filling mold, and the air extraction assembly acts on the second space via the support surface. The gas heating and filling mechanism includes a heating assembly and an inflation assembly. The heating assembly has a heating end that moves and presses against the filling mold, and the inflation assembly acts on the first space via the heating end. This curved glass forming device can effectively avoid the problems of surface indentation and glass breakage during the forming process of curved glass, and improve the product yield.

Description

Technical Field

[0001] This application relates to the technical field of curved glass forming, and particularly to a curved glass forming device and a production line having the same. Background Art

[0002] Currently, the forming process of curved glass is generally carried out by hot bending and pressing. The hot bending and pressing mold containing glass moves step by step on the mold aisle at the top of the forming lower plate group under the control of a pushing mechanism, and is respectively pressed by multiple forming stations in a high-temperature environment, so that the internal glass raw material is extruded and pressed into the shape of the inner surface of the mold.

[0003] During the pressing process, the glass sheet in the mold is in direct contact with the mold punch. Once the temperature of the glass mold is not high enough to soften the glass sheet, or the placement of the glass in the mold is not precise enough, or there are some details problems such as a little deviation of the forming upper plate group during the pressing process, when the mold punch moves downward to press the glass sheet against the curved surface of the mold cavity during the cylinder pressing process, it is easy to produce defects such as indentation and imprint on the curved glass, and the glass may break, affecting the product yield. Summary of the Invention

[0004] The purpose of this application is to provide a curved glass forming device and a production line having the same. The curved glass forming device can effectively avoid the defects of indentation, imprint on the surface of the curved glass and glass breakage during the forming process, and improve the product yield.

[0005] To this end, in a first aspect, an embodiment of this application provides a curved glass forming device, including a filling mold, a high-temperature air extraction mechanism, and a gas heating and filling mechanism. Among them, the filling mold has a cavity for accommodating a glass sheet, and the glass sheet divides the cavity into a first space and a second space; the high-temperature air extraction mechanism includes a support component and an air extraction component, the support component has a support surface adapted to the filling mold, and the air extraction component acts on the second space via the support surface; the gas heating and filling mechanism includes a heating component and an air filling component, the heating component has a heating end that moves and presses the filling mold, and the air filling component acts on the first space via the heating end. The heating component includes: a heating plate and a heating tube sleeve, arranged at the heating end. A gas channel is arranged inside the heating plate, the heating tube sleeve is filled and arranged in at least part of the gas channel, and the heating tube sleeve is provided with heating holes along the extending direction of the gas channel.

[0006] In a possible implementation manner, the heating component further includes: a first heating tube, inserted into the heating plate for heating the gas in the gas channel.

[0007] In a possible implementation manner, a second heating tube is inserted below the support surface.

[0008] In a possible implementation, the input end of the inflation assembly is connected to the first nitrogen gas source; the air extraction assembly includes a vacuum pump, a vacuum pipeline, and a vacuum-breaking module. One end of the vacuum pipeline is connected to the support assembly, the other end is connected to the vacuum pump, one end of the vacuum-breaking module is connected to the vacuum pipeline, and the other end is connected to the second nitrogen gas source.

[0009] In a possible implementation, a control valve is provided on the vacuum pipeline. The control valve has a first state for conducting the vacuum pump and a second state for conducting the vacuum-breaking module.

[0010] In a possible implementation, the gas heating and filling mechanism further includes: a linear drive assembly; and a first water-cooling assembly disposed at the movable end of the linear drive assembly; wherein, the heating assembly is disposed on the first water-cooling assembly.

[0011] In a possible implementation, the high-temperature air extraction mechanism further includes a second water-cooling assembly, and the second water-cooling assembly is disposed on the side of the support assembly away from the gas heating and filling mechanism.

[0012] In a second aspect, an embodiment of the present application provides a curved glass forming production line, including: the above-mentioned curved glass forming device, the curved glass forming device includes a filling mold, a high-temperature air extraction mechanism, and a gas heating and filling mechanism; and a furnace body, in which a channel for conveying the filling mold is provided, and a forming station is provided in the channel; wherein, the high-temperature air extraction mechanism and the gas heating and filling mechanism are respectively disposed on both sides of the forming station.

[0013] In a possible implementation, a slow cooling station is further provided in the channel at the output end of the forming station, and the curved glass forming device further includes a high-temperature air extraction mechanism disposed at the slow cooling station.

[0014] According to the curved glass forming device and the production line having the same provided by the embodiment of the present application, the curved glass forming device places the filling mold preheated to a preset temperature together with the glass sheet inside on the support assembly. The gas heating and filling mechanism fills the gas heated to the preset temperature into the first space of the filling mold, and the gas in the second space of the filling mold is extracted through the high-temperature air extraction mechanism, so that a stable pressure difference is formed on both sides of the glass sheet in the filling mold. Through the pressure difference, the softened glass sheet fits the forming surface of the cavity and is formed, which can effectively avoid the problems of surface indentation and glass breakage during the forming process of the curved glass. The temperature of the filled gas is consistent with the temperature of the internal environment of the filling mold, which can ensure uniform and stable temperature in the first space, thereby improving the product yield. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings. Additionally, in the accompanying drawings, the same components are denoted by the same reference numerals, and the drawings are not drawn to actual scale.

[0016] Figure 1 Shows a schematic structural diagram of a curved glass forming device provided by an embodiment of the present application;

[0017] Figure 2 Shows a three-dimensional structural diagram of a gas heating and filling mechanism provided by an embodiment of the present application;

[0018] Figure 3 Shows a three-dimensional structural diagram of a heating component provided by an embodiment of the present application;

[0019] Figure 4 Shows an exploded structural diagram of a heating plate and a heating tube sleeve provided by an embodiment of the present application;

[0020] Figure 5 Shows a planar structural diagram of a heating tube sleeve provided by an embodiment of the present application;

[0021] Figure 6 Shows a three-dimensional structural diagram of a heating tube sleeve provided by an embodiment of the present application;

[0022] Figure 7 Shows a cross-sectional structural diagram of a filling mold and a glass sheet provided by an embodiment of the present application;

[0023] Figure 8 Shows a three-dimensional structural diagram of a high-temperature air extraction mechanism provided by an embodiment of the present application;

[0024] Figure 9 Shows a partially enlarged structural diagram of a support component and a second water cooling component provided by an embodiment of the present application;

[0025] Figure 10 Shows a three-dimensional structural diagram of a curved glass forming production line provided by an embodiment of the present application;

[0026] Figure 11 Shows a top view structural diagram of a curved glass forming production line provided by an embodiment of the present application;

[0027] Figure 12 Shows a planar structural diagram of a curved glass forming production line provided by an embodiment of the present application;

[0028] Figure 13 Shows a schematic diagram of the inflation principle of a gas heating and filling mechanism provided by an embodiment of the present application;

[0029] Figure 14 Shows a schematic diagram of the vacuum pumping principle of a high-temperature air extraction mechanism provided by an embodiment of the present application.

[0030] Description of the reference numerals:

[0031] a, glass sheet;

[0032] 1, filling mold; 11, first space; 12, second space;

[0033] 2, high-temperature air extraction mechanism; 21, support assembly; 211, support surface; 212, second heating tube; 22, air extraction assembly; 221, vacuum pump; 222, vacuum pipeline; 223, vacuum-breaking module; 224, control valve; 225, second nitrogen gas source; 23, second water cooling assembly;

[0034] 3, gas heating and filling mechanism; 31, heating assembly; 311, heating plate; 3111, gas channel; 312, first heating tube; 313, heating tube sleeve; 3131, heating hole; 3132, communication hole; 3133, through hole; 3134, first heating hole; 3135, second heating hole; 32, inflation assembly; 321, first nitrogen gas source; 322, filter element; 323, booster pump; 324, gas storage tank; 325, gas path connection block; 326, inflation pipeline; 327, inflation control valve; 328, pressure regulating valve; 329, inflation pipe column; 33, linear drive assembly; 331, lifting cylinder; 332, slide rail connecting column; 34, first water cooling assembly;

[0035] 4, furnace body; 41, channel; 42, forming station; 43, slow cooling station. Detailed implementation manners

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0037] Figure 1 Shows a schematic structural diagram of a curved glass forming device provided by an embodiment of the present application; Figure 2 Shows a three-dimensional structural diagram of a gas heating and filling mechanism provided by an embodiment of the present application;

[0038] Figure 3 Shows a three-dimensional structural schematic diagram of a heating component provided by an embodiment of the present application; Figure 4 Shows an exploded structural schematic diagram of a heating plate and a heating tube sleeve provided by an embodiment of the present application; Figure 5 Shows a planar structural schematic diagram of a heating tube sleeve provided by an embodiment of the present application; Figure 6 Shows a three-dimensional structural schematic diagram of a heating tube sleeve provided by an embodiment of the present application; Figure 7 Shows a cross-sectional structural schematic diagram of a filling mold and a glass sheet provided by an embodiment of the present application; Figure 8 Shows a three-dimensional structural schematic diagram of a high-temperature air extraction mechanism provided by an embodiment of the present application; Figure 9 Shows a partially enlarged structural schematic diagram of a support component and a second water cooling component provided by an embodiment of the present application;

[0039] As Figures 1 to 9 Shown, an embodiment of the present application provides a curved glass forming device, including a filling mold 1, a high-temperature air extraction mechanism 2, and a gas heating and filling mechanism 3, wherein:

[0040] The filling mold 1 has a cavity for accommodating a glass sheet a, and the glass sheet a divides the cavity into a first space 11 and a second space 12.

[0041] The high-temperature air extraction mechanism 2 includes a support component 21 and an air extraction component 22. The support component 21 has a support surface 211 adapted to the filling mold 1, and the air extraction component 22 acts on the second space 12 via the support surface 211.

[0042] The gas heating and filling mechanism 3 includes a heating component 31 and an air inflation component 32. The heating component 31 has a heating end that moves and presses the filling mold 1, and the air inflation component 32 acts on the first space 11 via the heating end.

[0043] In the present application, the filling mold 1 preheated to a preset temperature together with the internal glass sheet a is placed on the support component 21. The gas heating and filling mechanism 3 fills the first space 11 of the filling mold 1 with gas heated to the preset temperature. The high-temperature air extraction mechanism 2 extracts the gas in the second space 12 of the filling mold 1, so that a stable pressure difference is formed on both sides of the glass sheet a in the filling mold 1. Through the pressure difference, the softened glass sheet a fits the forming surface of the cavity and is formed, which can effectively avoid the problems of surface indentation and glass breakage during the forming process of the curved glass. The temperature of the filled gas is consistent with the temperature of the internal environment of the filling mold 1, which can ensure that the temperature in the first space 11 is uniform and stable, thereby improving the product yield.

[0044] Specifically, the filling mold 1 includes an upper mold and a lower mold. After the glass sheet a is loaded into the lower mold, the upper mold and the lower mold are buckled. The glass sheet a divides the cavity into a first space 11 above and a second space 12 below. Micro holes are respectively provided on the upper mold and the lower mold. Such micro holes can be the micro holes invisible to the naked eye possessed by the graphite mold itself due to the characteristics of the graphite material conveying structure, or the micro holes machined on the steel mold. The gas heating and filling mechanism 3 passes high-pressure and high-temperature gas into the first space 11 of the filling mold 1 through the micro holes on the upper mold, and the high-temperature air extraction mechanism 2 evacuates the second space 12 through the micro holes on the lower mold.

[0045] In some embodiments, the heating component 31 includes a heating plate 311 and a first heating pipe 312, wherein:

[0046] The heating plate 311 is arranged at the heating end. A gas channel 3111 is arranged inside the heating plate 311. One end of the gas channel 3111 is communicated with the gas filling component 32, and the other end extends to the support surface 211.

[0047] The first heating pipe 312 is inserted into the heating plate 311 for heating the gas in the gas channel 3111.

[0048] In this application, the entire heating plate 311 is heated by the first heating pipe 312. The gas filling component 32 passes gas into the gas channel 3111. The gas is heated to a preset temperature during the process of flowing in the gas channel 3111, and then is passed into the filling mold 1 on the support surface 211 to inflate and boost the pressure of the first space 11 above the glass sheet a in the filling mold 1, avoiding the situation of uneven temperature in the filling mold 1 caused by heating after low-temperature gas is passed into the filling mold 1, and thus ensuring the forming effect of the glass.

[0049] In some embodiments, the heating component 31 further includes a heating pipe sleeve 313. The heating pipe sleeve 313 is filled and arranged in at least part of the gas channel 3111, and the heating pipe sleeve 313 is provided with heating holes 3131 along the extending direction of the gas channel 3111, and the heating holes 3131 penetrate through the heating pipe sleeve 313.

[0050] In the related art, due to material and processing limitations, it is not only difficult but also very costly to machine small gas channels 3111 on the heating plate 311. If the aperture of the gas channel 3111 is not reduced, it is impossible to effectively and uniformly heat the high-pressure gas, so that the high-pressure gas may not be heated to the preset temperature when flowing through the gas channel 3111, and it is very likely that the glass is affected by low-temperature high-pressure nitrogen to cause uneven heating and cooling, and then the internal stress of the glass sheet a at high temperature is chaotic, cracks or other adverse problems are generated.

[0051] In this application, by filling the heating tube sleeve 313 into the gas passage 3111 of the heating plate 311, high-pressure gas flows through the heating holes 3131 of the heating tube sleeve 313. The heating holes 3131 of a single heating tube sleeve 313 are convenient to be processed into smaller apertures. The high-pressure gas flowing through the gas passage 3111 changes to flowing through the heating holes 3131, greatly reducing the cross-sectional area of the high-pressure gas flow, enabling the heating plate 311 to heat the high-pressure gas more sufficiently, effectively and uniformly heating the high-pressure gas, ensuring that the high-pressure gas is heated to a preset temperature, avoiding the situation of internal stress disorder of the glass sheet due to uneven heating and cooling, and ensuring the forming effect of the curved glass.

[0052] Specifically, a gas passage 3111 with a normal aperture is processed on the heating plate 311, which can be completed by using existing drilling techniques. Then, the heating tube sleeve 313 is filled into the gas passage 3111, and the high-pressure gas flows through the heating holes 3131 of the heating tube sleeve 313. The heating holes 3131 of the heating tube sleeve 313 are convenient to be processed into small holes, thereby reducing the aperture of the high-pressure gas flow and the cross-sectional area of the high-pressure gas flow, enabling more delicate and sufficient heating of the high-pressure gas, and thus ensuring the heating effect of the high-pressure gas.

[0053] In this application, the cross-section of the heating hole 3131 is circular, which is convenient for drilling. Of course, the shape of the cross-section of the heating hole 3131 is not limited and can also be an arc structure or a strip structure.

[0054] In some embodiments, the heating hole 3131 includes a plurality of first heating holes 3134 evenly distributed around the central axis of the heating tube sleeve 313.

[0055] In this application, the high-pressure gas is conveyed through a plurality of first heating holes 3134 evenly distributed around the central axis of the heating tube sleeve 313. The heat of the heating plate 311 is transferred to the high-pressure gas in the first heating holes 3134 through the heating tube sleeve 313. The heating tube sleeve 313 is evenly heated, thereby ensuring that the high-pressure gas flowing through the heating tube sleeve 313 can be uniformly heated.

[0056] Specifically, the number of the first heating holes 3134 is 5, and the number of the first heating holes 3134 on the heating tube sleeve 313 can also be set to other numbers according to actual situations, such as 4, 6, 7, 8, etc.

[0057] In some embodiments, the heating hole 3131 further includes a second heating hole 3135 extending along the central axis of the heating tube sleeve 313.

[0058] In this application, the second heating hole 3135 extends along the central axis of the heating tube sleeve 313, increasing the number of heating holes 3131 on the heating tube sleeve 313. The distance from the second heating hole 3135 to the surrounding first heating holes 3134 is equal, which can ensure that the high-pressure gas in the second heating hole 3135 is evenly heated, make full use of the heating tube sleeve 313, and utilize the heat at the central axis of the heating tube sleeve 313.

[0059] In some embodiments, a communication hole 3132 is provided at the end of the heating tube sleeve 313. A plurality of heating holes 3131 are communicated through the communication hole 3132. The ends of adjacent two heating tube sleeves 313 are abutted against each other and communicated through the communication hole 3132.

[0060] In this application, since the heating holes 3131 processed on the heating tube sleeve 313 are tiny fine holes, the length of the heating tube sleeve 313 should not be too long. The heating tube sleeve 313 adopts a small-section structure, which is convenient for processing micro heating holes 3131 on the heating tube sleeve 313, and loading multiple sections of heating tube sleeves 313 into the gas passage 3111 in sequence. The ends of adjacent two heating tube sleeves 313 are abutted against each other. During the operation of the heating assembly 31, lifting and lowering movements will occur. The heating tube sleeves 313 in the gas passage 3111 are prone to rotation and displacement during the lifting and lowering process, causing the heating holes 3131 on adjacent heating tube sleeves 313 to be misaligned and resulting in gas blockage. However, in this application, a communication hole 3132 is provided at the end of the heating tube sleeve 313. The communication hole 3132 is communicated with the heating hole 3131, and adjacent two heating tube sleeves 313 are communicated through the communication hole 3132. When the heating tube sleeve 313 is offset or rotated, the heating holes 3131 of the two heating tube sleeves 313 can still be kept communicated, effectively avoiding the situation of gas path blockage.

[0061] Moreover, when the high-pressure gas flows through the heating hole 3131 of one heating tube sleeve 313 to the communication hole 3132, the high-pressure gas will be mixed. Then it enters the communication hole 3132 and the heating hole 3131 of the next heating tube sleeve 313, which is equivalent to mixing the high-pressure gas multiple times during the flow of the high-pressure gas, further improving the uniformity of heating the high-pressure gas.

[0062] Optionally, a limiting groove can also be provided along the extending direction in the gas passage 3111. A limiting block is reserved on the outer peripheral side of the heating tube sleeve 313. The heating tube sleeve 313 is positioned by the limiting block in the limiting groove, ensuring that the heating holes 3131 between adjacent heating tube sleeves 313 can be accurately matched, and preventing the situation of gas path blockage caused by the rotation of the heating tube sleeve 313.

[0063] In some embodiments, a gap is left between the heating tube sleeve 313 and the inner surface of the gas passage 3111. A through hole 3133 communicating with the communication hole 3132 is provided on the outer peripheral side of the heating tube sleeve 313, so that the communication hole 3132 communicates with the gap between the heating tube sleeve 313 and the gas passage 3111.

[0064] In this application, by providing the through hole 3133 to connect the communication hole 3132 with the gap between the heating tube sleeve 313 and the gas passage 3111, the gap between the heating tube sleeve 313 and the inner wall of the gas passage 3111 can be utilized, further enhancing the uniform heating effect of the heating plate 311 on the high-pressure gas.

[0065] Specifically, the inner diameter of the gas passage 3111 needs to be slightly larger than the outer diameter of the heating tube sleeve 313 to facilitate inserting the heating tube sleeve 313 into the gas passage 3111. Therefore, a gap will be left between the heating tube sleeve 313 and the inner surface of the gas passage 3111, and this gap can be better utilized to heat the high-pressure gas.

[0066] In addition, the heating tube sleeve 313 is inserted into the gas passage 3111 of the heating plate 311 by filling, so that the damaged heating tube sleeve 313 can be replaced, saving costs.

[0067] In some embodiments, a second heating tube 212 is inserted below the support surface 211.

[0068] In this application, the support surface 211 is heated by the second heating tube 212, and then the heat is transferred to the filling mold 1 and the glass sheet a inside the filling mold 1, so that the temperature in the second cavity of the filling mold 1 is maintained at a preset temperature, ensuring that the temperatures on both sides of the glass sheet a are the same, and further improving the forming effect of the glass.

[0069] In some embodiments, the input end of the inflation assembly 32 is connected to the first nitrogen gas source 321; the air extraction assembly 22 includes a vacuum pump 221, a vacuum pipeline 222 and a vacuum breaking module 223. One end of the vacuum pipeline 222 is connected to the support assembly 21, the other end is connected to the vacuum pump 221, one end of the vacuum breaking module 223 is connected to the vacuum pipeline 222, and the other end is connected to the second nitrogen gas source 225.

[0070] In this application, the inflation assembly 32 is connected to the first nitrogen gas source 321 to deliver high-pressure nitrogen gas to the heating assembly 31 for heating. Then, the nitrogen gas heated to the preset temperature is introduced into the first space 11 of the filling mold 1. The air extraction assembly 22 extracts the gas in the second space 12 of the filling mold 1 through the vacuum pump 221 and the vacuum pipeline 222, making the second space 12 in a negative pressure or vacuum state. After the second space 12 is evacuated, the glass sheet a is formed in the filling mold 1. Finally, the vacuum pipeline 222 is disconnected through the vacuum breaking module 223, and the second nitrogen gas source 225 is introduced into the second space 12 to achieve vacuum breaking. The entire forming process is carried out in a nitrogen environment, avoiding oxidation of the filling mold 1 when it is in a high-temperature state and in contact with oxygen, effectively protecting the filling mold 1 and extending its service life. Moreover, when the inflation stops during glass forming, the high-temperature and high-pressure nitrogen gas will gradually overflow from the filling mold 1 into the furnace body 4, further supplementing the nitrogen gas volume in the furnace body 4 and increasing the nitrogen concentration in the furnace body 4, thereby being able to more effectively prevent the parts in the furnace body 4 from oxidizing and further reducing the maintenance cost of the furnace body 4.

[0071] In some embodiments, a control valve 224 is provided on the vacuum pipeline 222. The control valve 224 has a first state for conducting the vacuum pump 221 and a second state for conducting the vacuum breaking module 223.

[0072] In this application, when the control valve 224 is in the first state, it conducts the vacuum pump 221, and the second space 12 of the filling mold 1 is evacuated through the vacuum pump 221. When the control valve 224 is in the second state, it conducts the vacuum breaking module 223, and nitrogen gas is supplied to the second space 12 of the filling mold 1 through the vacuum breaking module 223 to achieve vacuum breaking.

[0073] In some embodiments, the gas heating and filling mechanism 3 further includes: a linear drive assembly 33; and a first water cooling assembly 34 disposed at the movable end of the linear drive assembly 33. Among them, the heating assembly 31 is disposed on the first water cooling assembly 34.

[0074] In this application, the linear drive assembly 33 drives the first water cooling assembly 34 and the heating assembly 31 to move downward and cooperate with the support assembly 21 to press the filling mold 1 tightly. The heating ends of the support assembly 21 and the heating assembly 31 are respectively abutted against the bottom surface and the top surface of the filling mold 1, so as to complete subsequent high-pressure gas filling and vacuum pumping operations; the first water cooling assembly 34 arranged between the heating assembly 31 and the linear drive assembly 33 can play a heat insulation effect, avoiding the heat of the heating assembly 31 being transferred to the linear drive assembly 33, and can cool down the heating assembly 31. Once the temperature is too high, the heating power can be reduced to ensure that "the heating heat of the first heating tube 312 = the heat absorbed by the first water cooling assembly 34 + the heat naturally lost in the furnace", so that the temperature is stabilized at a fixed value; and this also prevents the overheating damage of the heating element.

[0075] Specifically, the linear drive assembly 33 includes a lifting cylinder 331 and a slide rail connecting column 332 arranged at the movable end of the lifting cylinder 331; the first water cooling assembly 34 includes a first water cooling plate, and a cooling water channel is arranged inside the first water cooling plate. The cooling water channel is connected to an external cooling water source, so that the cooling water flows through the cooling water channel of the first water cooling plate to achieve the purpose of cooling; the gas filling assembly 32 includes a gas storage tank 324, a gas filling pipeline 326 and a gas filling column 329. One end of the gas filling pipeline 326 is connected to the gas storage tank 324 through a gas path connecting block 325, and the other end is connected to the gas filling column 329. The gas filling column 329 is installed at the bottom of the slide rail connecting column 332, and the gas filling column 329 penetrates through the first water cooling plate and is communicated with the gas channel 3111 of the heating plate 311.

[0076] In some embodiments, the high-temperature air extraction mechanism 2 further includes a second water cooling assembly 23, and the second water cooling assembly 23 is arranged on the side of the support assembly 21 away from the gas heating and filling mechanism 3.

[0077] In this application, it is used to isolate the support assembly 21, water-cool and protect the parts in the non-high-temperature area, and at the same time, the heating temperature of the support assembly 21 can be stabilized within a fixed range.

[0078] The curved glass forming device places the filling mold 1 preheated to a preset temperature together with the glass sheet a inside on the support assembly 21. The gas heating and filling mechanism 3 fills the gas heated to the preset temperature into the first space 11 of the filling mold 1, and the gas in the second space 12 of the filling mold 1 is extracted through the high-temperature air extraction mechanism 2, so that a stable pressure difference is formed on both sides of the glass sheet a in the filling mold 1. Due to the pressure difference, the softened glass sheet a fits the forming surface of the cavity and is formed, which can effectively avoid the problems of surface indentation and glass cracking during the forming process of the curved glass. The temperature of the filled gas is the same as the temperature of the internal environment of the filling mold 1, which can ensure that the temperature in the first space 11 is uniform and stable, thereby improving the product yield.

[0079] Figure 10 Shows a three - dimensional structural schematic diagram of a curved glass forming production line provided by an embodiment of the present application; Figure 11 Shows a top - view structural schematic diagram of a curved glass forming production line provided by an embodiment of the present application; Figure 12 Shows a planar structural schematic diagram of a curved glass forming production line provided by an embodiment of the present application; Figure 13 Shows a schematic diagram of the inflation principle of a gas heating and filling mechanism provided by an embodiment of the present application; Figure 14 Shows a schematic diagram of the principle of vacuum pumping of a high - temperature air extraction mechanism provided by an embodiment of the present application.

[0080] As Figures 10 - 14 As shown, an embodiment of the present application provides a curved glass forming production line, including: the above - mentioned curved glass forming device, the curved glass forming device includes a filling mold 1, a high - temperature air extraction mechanism 2 and a gas heating and filling mechanism 3; and a furnace body 4, in which a channel 41 for conveying the filling mold 1 is arranged, and a forming station 42 is arranged in the channel 41; wherein, the high - temperature air extraction mechanism 2 and the gas heating and filling mechanism 3 are respectively arranged on both sides of the forming station 42.

[0081] In the present application, the filling mold 1 containing the glass sheet a is conveyed through the channel 41. After being conveyed to the forming station 42, the second space 12 of the filling mold 1 is evacuated by the high - temperature air extraction mechanism 2, and high - temperature and high - pressure gas is introduced into the first space 11 of the filling mold 1 by the gas heating and filling mechanism 3. Thus, a stable pressure difference is formed on both sides of the glass sheet a, and the bending forming of the glass is completed under the action of the pressure difference. During the whole forming process, no indentation, imprint and glass breakage problems will occur to the glass sheet a, improving the forming effect of the glass.

[0082] Specifically, the channel 41 is a sliding channel 41 for the transfer and conveyance of the filling mold 1 in the furnace body, which is composed of a plurality of support plates arranged in sequence along the extending direction of the channel 41. The filling mold 1 can be step - by - step conveyed in the channel 41 through a fork mechanism or a sorting component, and is sequentially conveyed to different stations. Among them, the support surface 211 of the support component 21 forms the channel 41 at the forming station 42.

[0083] In some embodiments, a slow - cooling station 43 is further arranged in the channel 41 at the output end of the forming station 42, and the curved glass forming device further includes a high - temperature air extraction mechanism 2 arranged at the slow - cooling station 43.

[0084] In the present application, the slow cooling station 43 is also called the pressure holding station, which is located behind the molding station 42. After the filling mold 1 is transported from the molding station 42 to the slow cooling station 43, high-temperature and high-pressure gas is no longer introduced into the first space 11 of the filling mold 1. Only the second space 12 of the filling mold 1 is evacuated by the high-temperature exhaust mechanism 2, so as to keep the formed 3D curved glass tightly attached to the lower mold curved surface, and perform slow cooling and solidification of the 3D curved glass.

[0085] Specifically, the support surface 211 of the support assembly 21 forms a channel 41 at the slow cooling station 43 .

[0086] like Figure 13 As shown, the inflation principle of the gas heating filling mechanism 3 is as follows: the first nitrogen gas source 321 is filtered and purified by the filter element 322, and then flows into the booster pump 323 for boosting. The low-pressure nitrogen is pressurized into high-pressure nitrogen by the booster pump 323 and stored in the gas storage tank 324. The gas outlet of the gas storage tank 324 is connected to the gas circuit connection block 325. Through the diversion of the gas circuit connection block 325, the high-pressure nitrogen is respectively introduced into a plurality of inflation pipelines 326. The inflation pipeline 326 is provided with a control The inflation control valve 327 and the pressure regulating valve 328 are used to control the opening and closing of the inflation pipeline. The pressure regulating valve 328 is used to adjust and control the pressure of the high-pressure nitrogen filled into the corresponding forming station 42. The inflation pipeline 326 is connected to the inflation column 329. The high-pressure nitrogen is filled into the gas channel 3111 of the heating plate 311 through the inflation column 329 for heating. Finally, the high-pressure nitrogen heated to a preset temperature is filled into the first space 11 of the filling mold 1 to form a high-pressure environment above the glass plate.

[0087] like Figure 14 As shown, the vacuum pumping principle of the high-temperature pumping mechanism is: a pumping hole is provided on the supporting surface 211 of the supporting component 21, and the vacuum pump 221 acts on the pumping hole through the vacuum pipeline 222 to perform a vacuum operation on the second space 12 of the filling mold 1 on the supporting surface 211, and a control valve 224 is provided on the vacuum pipeline 222 to control the vacuum pipeline 222 to be connected with the vacuum pump 221 or to be connected with the vacuum breaking module 223. When the vacuum pipeline 222 is connected with the vacuum pump 221 and disconnected from the vacuum breaking module 223, a vacuum pumping operation is performed; when the vacuum pipeline 222 is connected with the vacuum breaking module 223 and disconnected from the vacuum pump 221, the vacuum breaking module 223 passes a second nitrogen gas source into the filling mold 1 to release the vacuum negative pressure state of the filling mold 1.

[0088] This curved glass forming production line evacuates the second space 12 of the filling mold 1 through the high-temperature air extraction mechanism 2, and introduces high-temperature and high-pressure gas into the first space 11 of the filling mold 1 through the gas heating and filling mechanism 3, so as to form a stable pressure difference on both sides of the glass sheet a. Under the action of the pressure difference, the bending forming of the glass is completed. During the whole forming process, no indentation, imprint or glass breakage will occur to the glass sheet a, improving the forming effect of the glass.

[0089] It should be noted that the "one embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. Moreover, when combining a specific feature, structure or characteristic with an embodiment, it is within the knowledge scope of those skilled in the art to implement such a feature, structure or characteristic in combination with other embodiments, whether explicitly or implicitly described.

[0090] It should be easily understood that the terms "on", "above" and "over" in this disclosure should be interpreted in the broadest way, so that "on" not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over something", but also can include the meaning of "above" or "over something" with no intermediate features or layers therebetween (i.e., directly on something).

[0091] In addition, for the convenience of description, spatial relative terms may be used in the text, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature relative to other elements or features as shown in the figure. Spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation shown in the drawings. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatial relative descriptive words used in the text can be similarly interpreted accordingly.

[0092] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A curved glass forming device, characterized in that, it includes a filling mold (1), a high-temperature air extraction mechanism (2) and a gas heating and filling mechanism (3), wherein, the filling mold (1) has a cavity for accommodating a glass sheet, and the glass sheet divides the cavity into a first space (11) and a second space (12); the high-temperature air extraction mechanism (2) includes a support assembly (21) and an air extraction assembly (22), the support assembly (21) has a support surface (211) adapted to the filling mold (1), and the air extraction assembly (22) acts on the second space (12) via the support surface (211); the gas heating and filling mechanism (3) includes a heating assembly (31) and an air inflation assembly (32), the heating assembly (31) has a heating end that moves and presses the filling mold (1), the air inflation assembly (32) acts on the first space (11) via the heating end, and the heating assembly (31) includes: a heating plate (311), a heating tube sleeve (313) arranged at the heating end, a gas passage (3111) is arranged inside the heating plate (311), the heating tube sleeve (313) is filled and arranged in at least part of the gas passage (3111), and the heating tube sleeve (313) is provided with heating holes (3131) along the extending direction of the gas passage (3111).

2. The curved glass forming device according to claim 1, characterized in that, the heating assembly (31) further includes: a first heating tube (312) inserted into the heating plate (311) for heating the gas in the gas passage (3111).

3. The curved glass forming device according to claim 1, characterized in that, a second heating tube (212) is inserted below the support surface (211).

4. The curved glass forming device according to claim 1, characterized in that, the input end of the air inflation assembly (32) is connected to a first nitrogen gas source; the air extraction assembly (22) includes a vacuum pump (221), a vacuum pipeline (222) and a vacuum breaking module (223), one end of the vacuum pipeline (222) is connected to the support assembly (21), the other end is connected to the vacuum pump (221), one end of the vacuum breaking module (223) is connected to the vacuum pipeline (222), and the other end is connected to a second nitrogen gas source.

5. The curved glass forming device according to claim 4, characterized in that, a control valve (224) is arranged on the vacuum pipeline (222), and the control valve (224) has a first state for conducting the vacuum pump (221) and a second state for conducting the vacuum breaking module (223).

6. The curved glass forming device according to claim 1, characterized in that, the gas heating and filling mechanism (3) further includes: a linear drive assembly (33); and a first water cooling assembly (34) arranged at the movable end of the linear drive assembly (33); wherein, the heating assembly (31) is arranged on the first water cooling assembly (34).

7. The curved glass forming device according to claim 1, characterized in that, the high-temperature air extraction mechanism (2) further includes a second water cooling component (23), and the second water cooling component (23) is arranged on a side of the support component (21) away from the gas heating and filling mechanism (3).

8. A curved glass forming production line, characterized in that, it includes: the curved glass forming device according to any one of claims 1 to 7, the curved glass forming device includes a filling mold (1), a high-temperature air extraction mechanism (2) and a gas heating and filling mechanism (3); and a furnace body (4), a channel (41) for conveying the filling mold (1) is arranged in the furnace body (4), and a forming station (42) is arranged in the channel (41); wherein, the high-temperature air extraction mechanism (2) and the gas heating and filling mechanism (3) are respectively arranged on two sides of the forming station (42).

9. The production line according to claim 8, characterized in that, a slow cooling station (43) is further arranged in the channel (41) at the output end of the forming station (42), and the curved glass forming device further includes the high-temperature air extraction mechanism (2) arranged at the slow cooling station (43).

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