Glass fusion method, fusion device, glass processing apparatus, and glass composite

Abstract

Provided in the embodiments of the present application are a glass fusion method, a fusion device, a glass processing apparatus, and a glass composite. The glass fusion method comprises: placing a glass member to be fused into a fusion device, wherein the fusion device has a carrying space for accommodating said glass member; and fusing said glass member. In the glass fusion method provided in the embodiments of the present application, the carrying space of the fusion device is configured to support and limit said glass member, so that said glass member can be adaptively assembled at a high temperature without lamination, thereby achieving final fusion. Even if said glass member is deformed at the high temperature during fusion, said glass member can be fixed by means of an inner wall of the carrying space, so that the fusion device can achieve the effect of shaping said glass member, thereby ensuring the dimensional accuracy of a container formed by said glass member after being fused.

Description

Glass fusion method, fusion device, glass processing equipment and glass composite

[0001] Cross-reference to related applications

[0002] The present application is based on the Chinese patent application No. 202410739613.0, filed on June 7, 2024, the Chinese patent application No. 202410739543.9, filed on June 7, 2024, the Chinese patent application No. 202421303628.4, filed on June 7, 2024, and the Chinese patent application No. 202421303247.6, filed on June 7, 2024, and claims priority to the above four Chinese patent applications, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of glass processing, in particular to a glass fusion method, a fusion device, a glass processing equipment and a glass composite. BACKGROUND

[0004] Currently, glass fusion is usually planar fusion, two pieces of glass are first planarly attached to a bubble-free state, then heat treated for fusion, and finally annealed to reduce the temperature, so that the two pieces of glass are fused into one. In the current glass fusion technology, the glass patching step is very important. If the glass is not patched first, the glass cannot be fused or the fusion quality is very poor and the fusion is not firm. When the glass fusion is three-dimensional fusion, such as T-shaped, cubic and other fusion structures, the glass patching operation is difficult due to the small fusion area, which is not conducive to fusion. SUMMARY

[0005] Therefore, the embodiments of the present application provide a glass fusion method, a fusion device, a glass processing equipment and a glass composite, which provide support and limiting for the to-be-fused glass piece by using the bearing space, so that the to-be-fused glass piece can be self-adaptively assembled at high temperature without patching, and finally the fusion is realized.

[0006] The embodiments of the present application provide a glass fusion method, which comprises the following steps:

[0007] Placing a to-be-fused glass piece in a fusion device, the fusion device having a bearing space accommodating the to-be-fused glass piece;

[0008] Fusing the to-be-fused glass piece.

[0009] In some embodiments, before the step of placing the to-be-fused glass piece in the fusion device, the method further comprises:

[0010] The plurality of glass sub-pieces are overlapped to form a glass piece to be fused, and the adjacent two glass sub-pieces are adhered by the adhesive;

[0011] In the step of fusing the glass piece to be fused, the adhesive is separated from the glass sub-pieces under the action of high temperature.

[0012] In some embodiments, the glass piece to be fused is a glass piece;

[0013] The glass piece to be fused comprises a plurality of glass sub-pieces, the plurality of glass sub-pieces comprising a first glass sub-piece and a second glass sub-piece, the first glass sub-piece having a first fusion surface, and the second glass sub-piece having a second fusion surface for fusing with the first fusion surface; the fusing device comprises a plurality of profiling pieces, and a bearing space is defined between the plurality of profiling pieces, the shape of the bearing space being the same as that of the glass composite to be fused;

[0014] The fusing of the glass piece to be fused comprises:

[0015] In the case that the first fusion surface is in contact with the second fusion surface, the first glass sub-piece and the second glass sub-piece are fused by applying pressure and heating to the glass piece to be fused, wherein the pressure applied to the first fusion surface is 0.01 MPa to 0.9 MPa, and the fusing temperature is the strain point of the glass piece to be fused to the softening point of the glass piece to be fused plus 100°C.

[0016] In some embodiments, the roughness of the first fusion surface and the second fusion surface is less than or equal to 10 μm, the flatness of the first fusion surface and the second fusion surface is less than or equal to 100 μm, the pressure applied to the first fusion surface is 0.01 MPa to 0.2 MPa, and the fusing temperature is the strain point of the glass piece to be fused to the softening point of the glass piece to be fused; or,

[0017] The roughness of the first fusion surface and / or the second fusion surface is greater than 10 μm, the flatness of the first fusion surface and / or the second fusion surface is greater than 100 μm, the pressure applied to the first fusion surface is 0.2 MPa to 0.9 MPa, and the fusing temperature is the strain point temperature of the glass piece to be fused plus 50°C to the softening point temperature of the glass piece to be fused plus 100°C.

[0018] In some embodiments, before the step of placing the glass piece to be fused in the bearing space and contacting the first fusion surface with the second fusion surface, the first fusion surface of the first glass sub-piece and the second fusion surface of the second glass sub-piece are fixed by using glue or adhesive tape.

[0019] In the step of applying pressure and heating to the glass piece to be fused, the glue or adhesive tape is volatilized.

[0020] In some embodiments, the first glass sub-piece has two, and the second glass sub-piece has a plurality, and the plurality of the second glass sub-piece further has a third fusion surface and a fourth fusion surface, the third fusion surface is disposed opposite to the second fusion surface, and the fourth fusion surface is in contact with both the second fusion surface and the third fusion surface.

[0021] In the step of placing the glass pieces to be fused into the supporting space, the first fusion surface of one of the first glass sub-pieces is in contact with the second fusion surface of the plurality of the second glass sub-pieces, the first fusion surface of the other first glass sub-piece is in contact with the third fusion surface of the plurality of the second glass sub-pieces, and the fourth fusion surface of two adjacent second glass sub-pieces is in contact, so that the glass composite is a hollow polyhedral glass.

[0022] In some embodiments, the first fusion surface of one of the first glass sub-pieces is provided with a through hole, and the corresponding position of the supporting member supporting the first glass sub-piece is also provided with a through hole, and in the step of heating while pressurizing the glass pieces to be fused, air is further introduced into the glass composite through the through hole, and the air pressure is 0.001 MPa to 0.6 MPa lower than the pressure applied to the first fusion surface.

[0023] Optionally, the air pressure is 0.05 MPa to 0.4 MPa lower than the pressure applied to the first fusion surface.

[0024] In some embodiments, the air pressure is 15 KPa to 800 KPa.

[0025] Optionally, the air pressure is 30 KPa to 500 KPa.

[0026] In some embodiments, the gas introduced includes one or more of nitrogen, argon, hydrogen, and air.

[0027] In some embodiments, the fusion time is 1 min to 10 h.

[0028] Optionally, the fusion time is 30 min to 3 h.

[0029] In some embodiments, the absolute value of the difference between the expansion coefficient of the fusion device and the expansion coefficient of the glass pieces to be fused is not more than 50% of the expansion coefficient of the glass pieces to be fused.

[0030] Optionally, the absolute value of the difference between the expansion coefficient of the fusion device and the expansion coefficient of the glass pieces to be fused is not more than 30% of the expansion coefficient of the glass pieces to be fused.

[0031] The embodiment of the present application provides a fusion device, which is applied to the glass fusion method in any embodiment of the present application, wherein the fusion device comprises:

[0032] The fixing assembly is formed with a bearing space for accommodating the glass pieces to be fused, and when the glass pieces to be fused are located in the bearing space, the outer wall of the glass pieces to be fused is in close contact with the inner wall of the bearing space.

[0033] In some embodiments, the fixing assembly is further formed with an avoiding space in communication with the bearing space, and when the glass pieces to be fused are located in the bearing space, the adhesive member is located in the avoiding space.

[0034] In some embodiments, the fixing assembly comprises a plurality of profiling members, all the profiling members surround to form the bearing space, all the profiling members correspond to all the glass sub-pieces one by one, and each profiling member can be in close contact with the surface of the corresponding glass sub-piece.

[0035] At least one of the profiling members can press the corresponding glass sub-piece.

[0036] In some embodiments, the plurality of glass sub-pieces comprises a bottom glass sub-piece, a top glass sub-piece and two side glass sub-pieces, the two side glass sub-pieces are arranged at intervals along a first direction on the bottom glass sub-piece, the top glass sub-piece is overlapped on one end of the two side glass sub-pieces away from the bottom glass sub-piece along a second direction intersecting the first direction.

[0037] The plurality of profiling members comprises a top profiling member, a bottom profiling member and two side profiling members, the two side profiling members are arranged at intervals along the first direction and correspond to the two side glass sub-pieces respectively, the bottom glass sub-piece is arranged on the bottom profiling member, and the top profiling member is arranged on the side of the top glass sub-piece away from the bottom glass sub-piece.

[0038] At least one of the side profiling members can press the corresponding side glass sub-piece along the second direction.

[0039] In some embodiments, the adhesive member is arranged on both ends of each side glass sub-piece in the first direction, and the adhesive member has an adhesive surface with adhesion, the adhesive surface is adhered to the side of the side glass sub-piece abutting against the corresponding side profiling member, and the adhesive surface is perpendicular to the second direction.

[0040] In some embodiments, the side of the side profiling member abutting against the corresponding side glass sub-piece is provided with an avoiding hole and / or an avoiding groove, and the adhesive member is located in the avoiding hole and / or the avoiding groove.

[0041] In some embodiments, the fixing assembly further comprises two connectors and two pressing members, the two connectors are respectively arranged on the side of each of the side profiling members away from the glass piece to be welded, each of the connectors extends longitudinally along the second direction, and the two ends of each of the connectors are connected to the bottom profiling member and the top profiling member respectively;

[0042] Each of the side profiling members is provided with a guide slope on the side thereof away from the bearing space, the guide slope intersects the second direction, and each of the pressing members abuts between the guide slope and the nearest connector.

[0043] In some embodiments, the pressing member is a cylinder, and the axis direction of the pressing member is parallel to the guide slope.

[0044] In some embodiments, the fixing assembly comprises a bearing assembly, a plurality of side profiling members and a plurality of pressing members, the plurality of side profiling members are installed on the bearing assembly and surround to form a bearing space for accommodating the glass piece to be welded, and the surface of each of the side profiling members can be fitted with the circumferential side wall of the glass piece to be welded.

[0045] The plurality of pressing members correspond to the plurality of side profiling members one by one, each of the pressing members is arranged between the corresponding side profiling member and the bearing assembly, and is used for applying a pre-tightening force to the corresponding side profiling member towards the bearing space.

[0046] In some embodiments, the bearing assembly comprises a base, a top seat and a plurality of connectors, the base and the top seat are arranged at intervals along the second direction, all the side profiling members are arranged between the base and the top seat, and the plurality of connectors are arranged at intervals around the bearing space, the two ends of each of the connectors are connected to the base and the top seat respectively, and each of the pressing members is arranged between at least one of the connectors and the corresponding side profiling member.

[0047] In some embodiments, each of the side profiling members is provided with a guide slope on the side thereof away from the bearing space, and the guide slope intersects the second direction.

[0048] Each of the connectors extends longitudinally along the second direction, and each of the pressing members abuts between the guide slope of the corresponding pressing member and the connector.

[0049] In some embodiments, the pressing member is a cylinder, and the axis direction of the pressing member is parallel to the guide slope.

[0050] In some embodiments, the fixing assembly further comprises a bottom profiling member, which is mounted on the base and capable of conforming to the bottom surface of the glass piece to be welded.

[0051] In some embodiments, the fixing assembly further comprises a top profiling member, which is placed on the top of the glass piece to be welded and conforms to the top surface of the glass piece to be welded.

[0052] In some embodiments, the welding device further comprises a jacking member, which is mounted on the bearing assembly;

[0053] The glass piece to be welded has an opening in communication with the interior, the jacking member is capable of entering the interior of the glass piece to be welded via the opening and capable of abutting against the top of the glass piece to be welded.

[0054] In some embodiments, the jacking member is configured to apply a jacking force to the top of the glass piece to be welded towards the top profiling member.

[0055] In some embodiments, the fixing assembly further comprises a fixing member mounted on the bearing assembly, the middle part of the jacking member is swingably mounted on the fixing member, and a weight is mounted on one end of the jacking member in the longitudinal direction, and the other end of the jacking member extends into the interior of the glass piece to be welded via the opening and abuts against the top of the glass piece to be welded.

[0056] In some embodiments, the glass piece to be welded is formed with an opening in communication with the interior thereof;

[0057] The fixing assembly comprises:

[0058] An inflation port is in communication with the bearing space and faces the opening;

[0059] An exhaust port is in communication with the bearing space and is located away from the opening.

[0060] In some embodiments, the fixing assembly comprises a top profiling member, a side profiling member, a flow dividing member, and a bottom profiling member, the side profiling member and the flow dividing member are arranged on the bottom profiling member at one end in the second direction, the side profiling member and the flow dividing member are provided with the top profiling member at the other end in the second direction, and the top profiling member, the side profiling member, the flow dividing member, and the bottom profiling member form the bearing space.

[0061] The top profiling part and the bottom profiling part respectively fit two ends of the glass piece to be welded in the second direction, the flow dividing part fits a circumferential side wall of the glass piece to be welded, the flow dividing part faces the opening, and the flow dividing part is provided with the inflation port, and the bottom profiling part is provided with the air extraction port.

[0062] In some embodiments, the fixing assembly further comprises a carrier, the carrier is provided with a receiving cavity and a receiving port in communication with the receiving cavity, the top profiling part is mounted on the carrier and covers the receiving port, and the side profiling part, the flow dividing part and the bottom profiling part are arranged in the receiving cavity.

[0063] In some embodiments, the top profiling part is capable of being mutually fastened with the carrier.

[0064] In some embodiments, the fixing assembly further comprises a pressing part, the pressing part is arranged on a side of the side profiling part away from the flow dividing part, and the pressing part is capable of exerting a pre-tightening force on the side profiling part towards the flow dividing part.

[0065] In some embodiments, the side profiling part is provided with a guide slope, the guide slope is arranged obliquely relative to the second direction, and the pressing part is in abutment with the guide slope and the carrier respectively.

[0066] In some embodiments, the pressing part is further provided with a contact slope, the contact slope is parallel to the guide slope and in abutment with the guide slope.

[0067] In some embodiments, the top profiling part is provided with an air inlet port, the top profiling part, the carrier and the flow dividing part are all provided with gas flow channels in communication with each other, the gas flow channel on the top profiling part is in communication with the air inlet port, and the gas flow channel on the flow dividing part is in communication with the inflation port.

[0068] In some embodiments, the glass piece to be welded comprises a top glass sub-piece, a bottom glass sub-piece and a plurality of side glass sub-pieces, the top glass sub-piece and the bottom glass sub-piece are arranged at two ends of all the side glass sub-pieces in the second direction, the plurality of side glass sub-pieces are sequentially connected and arranged around the top glass sub-piece and the bottom glass sub-piece, and the opening is formed between the first side glass sub-piece and the last side glass sub-piece.

[0069] In some embodiments, the number of the side profiling parts is a plurality, the plurality of side profiling parts are sequentially connected and correspond to the plurality of side glass sub-pieces one by one, and the surface of each side profiling part matches and fits the surface of the corresponding side glass sub-piece.

[0070] The embodiment of the present application provides a glass processing equipment, comprising the fusion device as described in any embodiment of the present application. The embodiment of the present application provides a glass composite, which is prepared by the glass fusion method as described in any embodiment of the present application.

[0071] The glass fusion method provided by the embodiment of the present application uses the bearing space of the fusion device to provide support and limiting for the glass piece to be fused, so that the glass piece to be fused can be adaptively assembled at high temperature without patching, and finally fusion is realized. Even if the glass piece to be fused deforms due to high temperature during fusion, the inner wall of the bearing space can fix the glass piece to be fused, so that the fusion device can have a shaping effect on the glass piece to be fused, and ensure the dimensional accuracy of the container formed after the glass piece to be fused is fused. BRIEF DESCRIPTION OF DRAWINGS

[0072] Fig. 1 is a process flow diagram of the glass fusion method provided by the first embodiment of the present application;

[0073] Fig. 2 is a process flow diagram of the glass fusion method provided by the second embodiment of the present application;

[0074] Fig. 3 is a process flow diagram of the glass fusion method provided by the third embodiment of the present application;

[0075] Fig. 4 is a structural diagram of the fusion device provided by the fourth embodiment of the present application;

[0076] Fig. 5 is an exploded diagram of the glass piece to be fused in the structure shown in Fig. 4;

[0077] Fig. 6 is a structural diagram of the glass piece to be fused after being bonded by the bonding piece in the structure shown in Fig. 5;

[0078] Fig. 7 is a structural diagram of the glass piece to be fused after being fused so that the bonding piece falls off in the structure shown in Fig. 5;

[0079] Fig. 8 is a structural diagram of the fusion device provided by the fifth embodiment of the present application;

[0080] Fig. 9 is an exploded diagram of the fusion device in the structure shown in Fig. 8;

[0081] Fig. 10 is a structural diagram of the glass piece to be fused in the structure shown in Fig. 8;

[0082] Fig. 11 is an exploded diagram of the glass piece to be fused in the structure shown in Fig. 10;

[0083] Fig. 12 is a structural diagram of the fusion device provided by the sixth embodiment of the present application;

[0084] Fig. 13 is a structural diagram of the glass piece to be fused in the structure shown in Fig. 12;

[0085] Fig. 14 is an exploded schematic view of the glass pieces to be fused in the structure shown in Fig. 13;

[0086] Fig. 15 is a schematic view of the structure of the glass pieces to be fused before the fusing device according to the seventh embodiment of the present application;

[0087] Fig. 16 is a schematic view of the structure of the glass pieces to be fused in the fusing device shown in Fig. 15 according to the embodiment of the present application;

[0088] Fig. 17 is a schematic view of the structure of the glass pieces to be fused before the fusing device according to the eighth embodiment of the present application;

[0089] Fig. 18 is a schematic view of the structure of the glass pieces to be fused in the fusing device shown in Fig. 17 according to the embodiment of the present application;

[0090] Fig. 19 is a fused interface view of the T-shaped glass of Example 1 in the experiment of the present application observed under a microscope at 5 times magnification;

[0091] Fig. 20 is a fused interface view of the T-shaped glass of Example 1 in the experiment of the present application observed under a microscope at 5 times magnification after the glass was placed in an ultrasonic device and vibrated for 12 h at a power of 600 W;

[0092] Fig. 21 is a fused interface view of the glass composite prepared by the glass fusing method of Comparative Example 3 in the experiment of the present application observed under a microscope at 5 times magnification after the glass composite was vibrated;

[0093] Fig. 22 is a fused interface view of the T-shaped glass of Example 2 in the experiment of the present application observed under a microscope at 5 times magnification. DETAILED DESCRIPTION

[0094] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated to cover all such modifications as fall within the scope of the present application. It should be noted that the specific embodiments of the present application do not limit the scope of the present application.

[0095] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0096] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if there are terms "a plurality of", the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0097] In this application, unless otherwise explicitly specified and limited, if there are terms "installation", "connection", "connection", "fixation" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0098] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0099] It is to be noted that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0100] The term "optionally" as used in the present application means that some embodiments of the present application can provide certain benefits in certain circumstances. However, other embodiments can also be optional in the same or other circumstances. Further, the description of one or more optional embodiments does not imply that other embodiments are not usable, nor is it meant to exclude other embodiments from the scope of the present application.

[0101] When a range of values is disclosed, unless otherwise explicitly indicated, each intervening value, to the minimum and maximum value of that range is intended to be included. Further, where a range of values is provided, every intervening value between the minimum and maximum value of that range is also intended to be encompassed. Additionally, other ranges can be combined even though the ranges are not explicitly stated.

[0102] In the present application, the technical features described in an open way include both the closed technical solution consisting of the listed features and the open technical solution containing the listed features.

[0103] The terms "comprises", "comprising", "includes", "including", "has", "having" and their conjugates as used herein, are intended to cover a non-exclusive inclusion. For example, a process, method, article, or apparatus that comprises a list of steps or components does not necessarily comprise only those steps or components but can include additional steps or components not expressly listed or inherent to such process, method, article, or apparatus.

[0104] Reference throughout this specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be combined with any of the other embodiments unless explicitly stated otherwise.

[0105] In the present application, "A is B ~ C" means that A is in a range of greater than or equal to B and less than or equal to C, for example, "the pressure is 0.01 MPa ~ 0.9 MPa" means that the pressure is in a range of greater than or equal to 0.01 MPa and less than or equal to 0.9 MPa, "the fusion temperature is the strain point of the glass piece ~ the softening point of the glass piece + 100°C" means that the fusion temperature is in a range of greater than or equal to the strain point of the glass piece and less than or equal to the softening point of the glass piece + 100°C.

[0106] In the present application, "the strain point" refers to the temperature at which the viscosity of the glass is 1014.5 dPa·s, that is, the temperature at which the internal stress of the glass can be substantially eliminated within a few hours, also known as the lower limit of the annealing temperature of the glass.

[0107] In the present application, "the softening point" refers to the temperature at which the viscosity of the glass is 107.6 Pa·s.

[0108] Referring to FIG. 1, the embodiment of the present application provides a glass fusion method, comprising the following steps:

[0109] S30: Placing the glass piece to be fused into the fusion device.

[0110] The fusion device has a bearing space for accommodating the glass piece to be fused, that is, when the glass piece to be fused is located in the bearing space, the inner wall of the bearing space can at least provide support and limiting for the glass piece to be fused.

[0111] Exemplarily, the outer wall of the glass piece to be fused and the inner wall of the bearing space are in close contact with each other.

[0112] Exemplarily, the fusion device comprises a plurality of profiling pieces, and the plurality of profiling pieces define the bearing space therebetween.

[0113] S50: Fusing the glass piece to be fused.

[0114] It should be noted that the fusion manner is not limited, for example, only the glass piece to be fused located in the bearing space can be heated to make the glass piece to be fused realize fusion under high temperature. For another example, the glass piece to be fused located in the bearing space can be heated and at the same time one of the glass pieces is subjected to pressure to make the glass piece to be fused realize fusion under high temperature and pressure. For another example, the glass piece to be fused located in the bearing space can be heated and at the same time the inside of the glass piece to be fused is inflated to make the inside of the glass piece to be fused in a high pressure state.

[0115] After the glass piece to be fused is fused, a glass composite is formed, that is, the shape of the bearing space is the same as the shape of the glass piece to be fused and the glass composite to be fused.

[0116] The glass fusing method provided by the embodiments of the present application uses the bearing space of the fusing device to provide support and limiting for the glass pieces to be fused, so that the glass pieces to be fused can be adaptively assembled at high temperature without needing to be combined, and finally fusing is realized. Even if the glass pieces to be fused are deformed due to high temperature during the fusing process, the inner wall of the bearing space can be used to fix the glass pieces to be fused, so that the fusing device can have a shaping effect on the glass pieces to be fused, and the dimensional accuracy of the container formed after fusing of the glass pieces to be fused is ensured.

[0117] It should be noted that the fusing device can also be referred to as a mold. The bearing space can also be referred to as an accommodating space, a fusing space, or a fusing cavity.

[0118] The present application also provides a glass composite, which can be prepared by using the glass fusing method provided by any of the embodiments of the present application.

[0119] In some embodiments, referring to FIG. 2, before step S30, the glass fusing method further includes step S10:

[0120] The plurality of glass sub-pieces are overlapped to form the glass pieces to be fused, and the adjacent two glass sub-pieces are bonded by the bonding member.

[0121] In the step of fusing the glass pieces to be fused, the bonding member is separated from the glass sub-pieces under the action of high temperature.

[0122] Exemplarily, the glass sub-pieces have fusing surfaces, and in the process of overlapping the plurality of glass sub-pieces to form the glass pieces to be fused, the fusing surfaces of every adjacent two glass sub-pieces contact each other. After the bonding member bonds the adjacent two glass sub-pieces, the fusing surfaces of the two glass sub-pieces contact more stably, and it is also convenient for the fusing surfaces of the two glass sub-pieces to better realize fusing in the fusing process.

[0123] In some embodiments, when the bonding member bonds the adjacent two glass sub-pieces, the bonding member needs to avoid the area where the fusing surfaces are located.

[0124] Exemplarily, the bonding member can be an adhesive tape, which can be volatilized and removed in the subsequent heating step.

[0125] In other embodiments, the bonding member can also be glue. In this embodiment, the glue is used to bond the fusing surfaces of the adjacent two glass sub-pieces. In the subsequent heating step, the glue can be volatilized and removed.

[0126] The bonding member can also be of other types, as long as it can bond the adjacent two glass sub-pieces.

[0127] Specifically, referring to FIG. 4, FIG. 5 and FIG. 6, the glass piece to be fused 40 is formed by at least two glass sub-pieces 41, for example, the at least two glass sub-pieces 41 include a bottom glass sub-piece 411, a top glass sub-piece 412 and two side glass sub-pieces 413 as described below. In step S10 of the glass fusing method, an adhesive 20 is adhered to the joint of each two adjacent glass sub-pieces 41, and the adhesive 20 adheres the two adjacent glass sub-pieces 41 to reinforce the joint of each glass sub-piece 41 by the adhesive 20, so that the glass piece to be fused 40 cooperates with the adhesive 20 to form a relatively stable structure, as shown in FIG. 6.

[0128] The adhesive 20 can be separated from the glass piece to be fused 40 under the action of high temperature, that is, the adhesive 20 used for adhesion can be selected to lose adhesion or directly evaporate in a high-temperature environment, so that the adhesive 20 loses the effect of adhesion. The fusing process of the glass piece to be fused 40 is to melt each glass sub-piece 41 by high temperature, so that the parts of each glass sub-piece 41 in contact with each other form an integral whole. Therefore, in the fusing process of the glass piece to be fused 40, the adhesive 20 is separated from the glass piece to be fused 40 under the action of high temperature, and the glass piece to be fused 40 forms a container as shown in FIG. 7.

[0129] The above glass fusing method reinforces the joint of each glass sub-piece 41 by the adhesive 20, so that the glass piece to be fused 40 cooperates with the adhesive 20 to form a relatively stable structure to ensure the stability of the glass piece to be fused 40 in the fusing process. The adhesive 20 will automatically fall off from the glass piece to be fused 40 under the action of high temperature in the fusing process. The product formed after the fusing of the glass piece to be fused 40 does not carry the adhesive 20. Compared with the traditional structure formed by splicing using a beam or a mortise and tenon structure, the glass sub-pieces 41 fixed and spliced by the adhesive 20 do not need additional processing of the splicing structure, and the adhesive 20 does not need to be removed by secondary operation after the fusing is completed. Therefore, the processing steps are effectively saved, and the production cost of the product is reduced.

[0130] In some embodiments, step S50 specifically includes:

[0131] S510a: After the glass piece to be fused is placed into the fusing device, the fusing device is placed into the sintering furnace, and the sintering furnace is used to increase the temperature at a first section of 200-400°C / 2 hours, and hold pressure for 2 hours to make the heat conduction uniform and perfect the initial temperature rise.

[0132] S520a: The second section of the sintering furnace is slowly heated at a speed of 450-750°C / 5 hours, and hold pressure for 30 minutes.

[0133] S530a: After the pressure-keeping and fillable gas mode protection, the glass pieces to be fused are taken out after cooling to below 80℃, and finally the required container, i.e., the required glass composite, is obtained.

[0134] In some embodiments, referring to FIGS. 16 and 18, the glass pieces to be fused 40 include a plurality of glass sub-pieces 41, which include a first glass sub-piece 41a having a first fusion surface and a second glass sub-piece 41b having a second fusion surface.

[0135] In some embodiments, the first glass sub-piece 41a can be one, two, three, or more than three, etc. The second glass sub-piece 41b can be one, two, three, or more than three, etc. For example, there is one first glass sub-piece 41a and one second glass sub-piece 41b, and the first glass sub-piece 41a and the second glass sub-piece 41b are fused to form a T-shaped glass or an L-shaped glass. Alternatively, there is one first glass sub-piece 41a and two second glass sub-pieces 41b, and the first glass sub-piece 41a and the second glass sub-pieces 41b are fused to form a U-shaped glass, etc. Alternatively, there are two first glass sub-pieces 41a and a plurality of second glass sub-pieces 41b, and the first glass sub-pieces 41a and the second glass sub-pieces 41b are fused to form a polyhedral glass, such as a hexahedral glass.

[0136] In some embodiments, the first glass sub-piece 41a and the second glass sub-piece 41b are made of the same material.

[0137] In some embodiments, the first glass sub-piece 41a and the second glass sub-piece 41b can have the same shape or different shapes, which can be selected according to the shape of the glass composite to be fused.

[0138] In some embodiments, the thickness of the first glass sub-piece 41a and the second glass sub-piece 41b is greater than 1 mm. For example, the thickness of the first glass sub-piece 41a and the second glass sub-piece 41b can be, but is not limited to, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, or a range formed by any two of these values.

[0139] It can be understood that the first glass sub-piece 41a and the second glass sub-piece can be vertically fused, or the first glass sub-piece 41a and the second glass sub-piece can be fused at a certain inclination angle, which is not particularly limited here. The first fusion surface can be a larger surface in the first glass sub-piece 41a, and the second fusion surface can be a smaller surface (such as a side surface) in the second glass sub-piece 41b, and the above-mentioned glass fusion method can fuse two glass sub-pieces with smaller fusion areas.

[0140] Exemplarily, step S50 specifically includes:

[0141] S510b: heating the glass pieces to be fused while pressing the glass pieces to be fused in the case where the first fusion surface is in contact with the second fusion surface, so that the first glass piece and the second glass piece are fused, wherein the pressure applied to the first fusion surface is 0.01 MPa to 0.9 MPa, and the fusion temperature is the strain point of the glass pieces to be fused to the softening point of the glass pieces to be fused + 100 DEG C.

[0142] In some embodiments, the pressure applied to the first fusion surface is 0.01 MPa to 0.9 MPa. For example, the pressure applied to the first fusion surface can be, but is not limited to, 0.01 MPa, 0.05 MPa, 0.1 MPa, 0.2 MPa, 0.3 MPa, 0.4 MPa, 0.5 MPa, 0.6 MPa, 0.7 MPa, 0.8 MPa, 0.9 MPa, or a range defined by any two of these values. Alternatively, the pressure applied to the first fusion surface is 0.1 MPa to 0.6 MPa. Under the above pressure, the glass can be self-adapted to the fusion surface, and the fusion effect is improved.

[0143] In some embodiments, the fusion temperature is related to the material properties of the glass pieces to be fused. Specifically, the fusion temperature is the strain point of the glass pieces to be fused to the softening point of the glass pieces to be fused + 100 DEG C. For example, the strain point of the glass pieces to be fused is 550 DEG C, the softening point is 770 DEG C, and the optional fusion temperature range is 560 DEG C to 790 DEG C.

[0144] In some embodiments, the fusion time is 1 min to 10 h. For example, the fusion time can be, but is not limited to, 1 min, 10 min, 30 min, 1 h, 2 h, 4 h, 6 h, 8 h, 10 h, or a range defined by any two of these values. Alternatively, the fusion time is 0.5 h to 3 h. The specific fusion time can be adjusted according to the fusion temperature, and it is necessary to ensure that the glass does not have obvious deformation during fusion.

[0145] The above fusion temperature, fusion time, and fusion pressure are the main parameters for controlling the fusion of the glass, and also affect the deformation of the glass during fusion. In some embodiments, the deformation of the glass pieces to be fused during the fusion process is less than 1 mm. Alternatively, the deformation of the glass pieces to be fused during the fusion process is controlled to be within 0.1 mm. Controlling the deformation is beneficial to ensure the fusion accuracy.

[0146] In some embodiments, the step of fusing the first glass sub-piece and the second glass sub-piece by applying pressure to the glass pieces to be fused while heating the glass pieces to be fused comprises: applying pressure to the fusing device at a fusing temperature and maintaining the temperature for a period of time to fuse the first glass sub-piece and the second glass sub-piece, and then annealing by cooling. It is understood that in the embodiments in which the fusing is performed by applying pressure to the glass pieces to be fused while heating the glass pieces to be fused, the pressure is maintained during the fusing stage. The pressure can be applied at the beginning of the heating stage or the constant temperature stage, and the pressure can be removed or maintained during the cooling stage. The heating rate and the cooling rate of the fusing are not particularly limited and can be commonly used in the art.

[0147] In some embodiments, the step of annealing by cooling, the glass pieces to be fused can be annealed by cooling together with the fusing device, and the cooling rate is, for example, 0.1-20 ℃ / min. The cooling rate can be adjusted according to the residual thermal stress, or the glass can be separately annealed after demolding. By annealing by cooling, the overall strength of the fused glass can be enhanced, the glass can be prevented from breaking, and the yield of the fusing can be improved.

[0148] In some embodiments, the roughness of the first fusing surface and the second fusing surface is less than or equal to 10 μm, the flatness is less than or equal to 100 μm, the pressure applied to the first fusing surface is 0.01-0.2 MPa, and the fusing temperature is the strain point of the glass pieces to be fused to the softening point of the glass pieces to be fused. By using the above glass fusing method, the glass pieces can be assembled and fused at the roughness and the flatness of the first fusing surface and the second fusing surface, although the glass pieces are not bonded. The glass pieces can be adapted to each other and can be assembled and fused, and the fusing area is greater than 80%. In addition, the problem of bubbles and gaps after fusing can be improved at the roughness and the flatness.

[0149] In some other embodiments, the roughness of the first fusing surface and / or the second fusing surface is greater than 10 μm, the flatness is greater than 100 μm, the pressure applied to the first fusing surface is 0.2-0.9 MPa, and the fusing temperature is the strain point temperature of the glass pieces to be fused + 50 ℃ to the softening point temperature of the glass pieces to be fused + 100 ℃. For the glass fusing surface with a roughness Ra greater than 10 μm and a flatness greater than 100 μm, at least partial fusing can be achieved by increasing the fusing temperature and the pressure, and the fusing area is greater than 40%. In addition, the bubbles and the gaps generated after fusing can be reduced by increasing the fusing temperature and the pressure, and the fusing effect can be improved.

[0150] In some embodiments, the heating is performed under a protective atmosphere. The protective atmosphere includes, but is not limited to, one or more of nitrogen, hydrogen, and argon. The protective atmosphere is beneficial to increase the service life of the fusing device. It is understood that in other embodiments, the heating can also be performed in an air atmosphere protected by a refractory material, in which case the service life of the fusing device can be reduced.

[0151] It should be understood that, although the steps in the flowcharts shown in FIGS. 1, 2, and 3 are shown in sequence according to the arrows, these steps are not necessarily performed in the order indicated by the arrows, and unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and they can be executed in other sequences, and at least part of the steps in FIG. 1 can include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but can be performed at different times, and the execution sequence is not necessarily sequential, but can be performed alternately or alternately with at least part of other steps or other sub-steps or stages.

[0152] Referring to FIG. 4, the fusing device provided by an embodiment of the present application is applied to the glass fusing method described above, and the fusing device includes a fixing assembly 10, the fixing assembly 10 is formed with a bearing space 10a, the bearing space 10a is used to accommodate a glass piece to be fused 40, and when the glass piece to be fused 40 is located in the bearing space 10a, the outer part of the glass piece to be fused 40 is in close contact with the inner wall of the bearing space 10a, that is, even if the glass piece to be fused 40 deforms due to high temperature during fusing, the glass piece to be fused 40 can be fixed by the inner wall of the bearing space 10a, so that the fusing device can have a shaping effect on the glass piece to be fused 40, and the dimensional accuracy of the glass piece to be fused 40 after fusing to form a container is ensured.

[0153] In addition, the present application provides a glass processing equipment, which includes the fusing device provided by any of the embodiments of the present application.

[0154] In some embodiments, the absolute value of the difference between the expansion coefficient of the fusing device and the expansion coefficient of the glass piece to be fused is not more than 50% of the expansion coefficient of the glass piece to be fused. Alternatively, the absolute value of the difference between the expansion coefficient of the fusing device and the expansion coefficient of the glass piece to be fused is not more than 30% of the expansion coefficient of the glass piece to be fused.

[0155] In some embodiments, the fusing device is graphite. Graphite is resistant to high temperature, and is not easy to adhere to the glass piece to be fused at high temperature. Specifically, the expansion coefficient of the fusing device is 3x10-6 / ℃-13x10-6 / ℃, and the expansion coefficient of the glass piece to be fused is 1x10-6 / ℃-15x10-6 / ℃.

[0156] It can be understood that the fusing device is not limited to graphite, and can also be ceramic or a base material + plating. Specifically, the fusing device can also be silicon carbide ceramic or silicon nitride ceramic, or the fusing device includes a tungsten carbide base material and a protective film arranged on the surface of the tungsten carbide base material, and the protective film can be a tantalum-tungsten alloy.

[0157] It can be understood that the structure of the fusing device can be adjusted according to the shape of the glass composite to be fused.

[0158] In some embodiments, the fixing assembly 10 is further formed with an avoiding space 10b in communication with the bearing space 10a, and the bonding member 20 is located in the avoiding space 10b when the glass piece 40 to be fused is located in the bearing space 10a. Since the outer wall of the glass piece 40 to be fused needs to be fitted with the inner wall of the bearing space 10a, the bonding member 20 is arranged in the avoiding space 10b, which can avoid the bonding member 20 affecting the fitting effect of the glass piece 40 to be fused and the inner wall of the bearing space 10a.

[0159] In some embodiments, the fixing assembly 10 includes a plurality of profiling members 11, such as the top profiling member 111, the bottom profiling member 112, and the side profiling member 113 described below, and the plurality of profiling members 11 correspond one-to-one to the plurality of glass sub-pieces 41. Each profiling member 11 can be fitted with the surface of the corresponding glass sub-piece 41 to fix the surface of the corresponding glass sub-piece 41 through the profiling member 11, thereby preventing the surface of the glass sub-piece 41 from deforming due to high temperature.

[0160] However, in actual use, the surface of the glass sub-piece 41 often has different shapes. During the fusing process, high temperature not only causes the glass sub-piece 41 to expand and deform, but also causes the shape or pattern on the glass sub-piece 41 to melt and deform. The profiling member 11 fitted with the surface of the corresponding glass sub-piece 41 can only prevent the glass sub-piece 41 from expanding and deforming, but cannot prevent the shape of the glass sub-piece 41 from melting and deforming.

[0161] Therefore, at least one profiling member 11 can press the corresponding glass sub-piece 41 tightly, so that even if the surface shape of the glass sub-piece 41 melts and deforms due to high temperature, the required shape can be recast on the glass sub-piece 41 through the profiling member 11 pressed tightly, so that the overall size and shape of the glass sub-piece 41 do not change greatly after fusing.

[0162] Specific to the embodiment of FIG. 4 and FIG. 5, the plurality of glass sub-pieces 41 includes a bottom glass sub-piece 411, a top glass sub-piece 412, and two side glass sub-pieces 413, the two side glass sub-pieces 413 are arranged at intervals along the first direction D1 from the bottom glass sub-piece 411, and the top glass sub-piece 412 is overlapped on one end of the two side glass sub-pieces 413 away from the bottom glass sub-piece 411 in the second direction D2, the second direction D2 intersects with the first direction D1, that is, a square structure is formed by overlapping the bottom glass sub-piece 411, the top glass sub-piece 412, and the two side glass sub-pieces 413.

[0163] The plurality of profiled pieces 11 includes a top profiled piece 111, a bottom profiled piece 112, and two side profiled pieces 113, the two side profiled pieces 113 are arranged at intervals along the first direction D1 and correspond to the two side glass sub-pieces 413 respectively, the bottom profiled piece 112 is provided with the bottom glass sub-piece 411, and the top profiled piece 111 is arranged on the side of the top glass sub-piece 412 away from the bottom glass sub-piece 411, so as to form the bearing space 10a by surrounding the top profiled piece 111, the bottom profiled piece 112, and the side profiled piece 113.

[0164] Among them, each side profiled piece 113 can press the corresponding side glass sub-piece 413, so as to fix the shape of the two side glass sub-pieces 413 by the two side profiled pieces 113, to avoid the surface of the side profiled piece 113 from being deformed, and in other embodiments, only one side profiled piece 113 can press the corresponding side glass sub-piece 413, when one side glass sub-piece 413 is pressed, the pressing force can be transmitted to the other side glass sub-piece 413 through the top glass sub-piece 412 or the bottom glass sub-piece 411, so that the other side glass sub-piece 413 can also press the corresponding side profiled piece 113 and be fixed by the corresponding side profiled piece 113.

[0165] It should be noted that the top glass sub-piece 412 can also be referred to as a top plate, an upper cover. The bottom glass sub-piece 411 can also be referred to as a bottom plate, a lower cover. The side glass sub-piece 413 can also be referred to as a side plate, an independent piece.

[0166] It should be noted that the top profiled piece 111 can also be referred to as an upper profiled piece, a cover plate. The bottom profiled piece 112 can also be referred to as a lower profiled piece, a static pressure piece. The side profiled piece 113 can also be referred to as a side profiled piece.

[0167] Optionally, the top glass sub-piece 412, the bottom glass sub-piece 411 and the side glass sub-piece 413 are all glass pieces, the top glass sub-piece 412 and the bottom glass sub-piece 411 have a thickness of 0.3mm-10mm, and the bonding piece 20 is also a glass piece, has a thickness of 1.5-3 times the thickness of the bottom glass sub-piece 411 or the top glass sub-piece 412, and has a width of 5-15mm, and the bonding piece 20 is bonded by a low-temperature bonding agent.

[0168] In some embodiments, each side glass sub-piece 413 is provided with a bonding piece 20 at each end in the first direction D1, and the bonding piece 20 has a bonding surface 21 that is adhesive, and the bonding surface 21 is bonded to a side of the side glass sub-piece 413 that is in abutment with the corresponding side profiling piece 113, and the bonding surface 21 is perpendicular to the second direction D2. When the side profiling piece 113 presses the side glass sub-piece 413, the pressing force acts on the side glass sub-piece 413 in the second direction D2, and in order to prevent the side glass sub-piece 413 from being pushed by the pressing force, the bonding piece 20 also needs to apply an adhesive force to the side glass sub-piece 413 to keep the side glass sub-piece 413 in a state of being connected to the bonding piece 20, and for this purpose, the bonding surface 21 of the bonding piece 20 is perpendicular to the second direction D2, so that the bonding force applied by the bonding piece 20 to the side glass sub-piece 413 is also in the second direction D2, thereby ensuring the bonding effect of the bonding piece 20 and the side glass sub-piece 413.

[0169] Further, in order to avoid interference between the bonding piece 20 and the side profiling piece 113, the side surface of the side profiling piece 113 that is in abutment with the corresponding side glass sub-piece 413 is provided with a relief groove 1132, and when the side profiling piece 113 is in abutment with the corresponding side glass sub-piece 413, the bonding piece 20 on the side glass sub-piece 413 is located in the relief groove 1132, i.e., a relief space 10b is formed in the relief groove 1132, and when the bonding piece 20 falls off from the glass piece to be melted due to high temperature, the bonding piece 20 falls into the relief groove 1132 and is accommodated in the relief groove 1132.

[0170] In other embodiments, the side surface of the side profiling piece 113 that is in abutment with the corresponding side glass sub-piece 413 is provided with a relief hole 1131, and when the side profiling piece 113 is in abutment with the corresponding side glass sub-piece 413, the bonding piece 20 on the side glass sub-piece 413 is located in the relief hole 1131, i.e., a relief space 10b is formed in the relief hole 1131, and when the bonding piece 20 falls off from the glass piece to be melted due to high temperature, the bonding piece 20 falls into the relief hole 1131 and is accommodated in the relief hole 1131.

[0171] Specific to the embodiment of FIG. 4, the side profile 113 is provided with a clearance groove 1132 at one end close to the top profile 111, and is provided with a clearance hole 1131 at one end close to the bottom profile 112. It can be understood that in some other embodiments, the side profile 113 can be provided with a clearance groove 1132 at both ends, or can be provided with a clearance hole 1131 at both ends, which is not limited herein.

[0172] In some embodiments, in order to realize the pressing of the side profile 113 to the side glass sub-piece 413, the fixing assembly 10 further comprises two first connecting pieces 12 and two pressing pieces 13. The two first connecting pieces 12 are respectively located on the side of each side profile 113 away from the to-be-welded glass piece 40. Each first connecting piece 12 extends longitudinally along the second direction D2, and the two ends thereof are connected with the bottom profile 112 and the top profile 111 respectively, that is, the bottom profile 112 and the top profile 111 are connected to form an integral whole through the first connecting piece 12, so as to improve the stability of the integral whole of the bottom profile 112, the top profile 111 and the first connecting piece 12.

[0173] Each side profile 113 is provided with a guide slope 1133 on the side thereof away from the bearing space 10a, and the guide slope 1133 intersects with the second direction D2. Each pressing piece 13 abuts between the guide slope 1133 of one of the side profiles 113 and the nearest first connecting piece 12. When the welding device is working, the second direction D2 is parallel to the direction of gravity. Under the action of gravity, the pressing piece 13 falls along the guide slope 1133 until it abuts with the first connecting piece 12. At this time, the gravity of the pressing piece 13 is entirely applied to the guide slope 1133, and finally changes to the horizontal pressure applied to the side profile 113, so that the side profile 113 can press the corresponding side glass sub-piece 413.

[0174] It should be noted that the horizontal pressure applied by the pressing piece 13 to the side profile 113 can also be referred to as the pre-tightening force applied by the pressing piece 13 to the side profile 113 towards the bearing space 10a.

[0175] It can be understood that in some other embodiments, the pressing piece 13 can also be an elastic piece such as a spring. By arranging the spring between the first connecting piece 12 and the side profile 113 and keeping the spring in a compressed state, the spring can also apply a certain pressure to the side profile 113, so that the side profile 113 can press the to-be-welded glass piece 40.

[0176] Further, the pressing member 13 is a cylinder, and the axis direction of the pressing member 13 is parallel to the guide slope 1133. When the pressing member 13 is placed on the guide slope 1133, the side surface of the cylinder is tangent to the guide slope 1133, so that the contact area between the pressing member 13 and the guide slope 1133 is reduced, and the rolling of the pressing member 13 is smoother.

[0177] In some embodiments, the glass piece to be welded 40 further comprises a back substrate 414, which is in abutment with one end of the bottom glass sub-piece 411, the top glass sub-piece 412 and each side glass sub-piece 413 in the third direction, respectively. The third direction, the first direction D1 and the second direction D2 are all intersected with each other and are not coplanar, that is, a five-surface closed cuboid structure is formed by the back substrate 414, the top glass sub-piece 412, the bottom glass sub-piece 411 and the two side glass sub-pieces 413.

[0178] The welding device further comprises a back profiling member (not shown in the figure), which is installed on the bottom profiling member 112 and is in close contact with the side of the back substrate 414 away from the side glass sub-piece 413. Thus, the back substrate 414 is fixed by the back profiling member, so as to avoid the separation of the back substrate 414 from the other glass sub-pieces 41, and the surface of the back substrate 414 is also fixed by the back profiling member, so as to avoid the deformation of the surface of the back substrate 414 during the welding process.

[0179] It should be noted that, in some embodiments, the back substrate 414 can be directly abutted on the structure formed by the glass sub-pieces 41 through the adhesive member 20 and fixed by the back profiling member after the glass sub-pieces 41 form an integral structure through the adhesive member 20. Therefore, the back substrate 414 can not be connected with the glass sub-pieces 41 through the adhesive member 20, and in other embodiments, the back substrate 414 can be connected with the glass sub-pieces 41 through the adhesive member 20 to fix the back substrate 414. Whether the back substrate 414 needs to be connected with the glass sub-pieces 41 through the adhesive member 20 can be selected according to actual needs, which is not limited herein.

[0180] Referring to FIGS. 8 and 9, in some embodiments, the fixing assembly 10 comprises a bearing assembly 14, a plurality of side profiling members 113 and a plurality of pressing members 13. The plurality of side profiling members 113 are all installed on the bearing assembly 14 and surround to form a bearing space 10a for accommodating the glass piece to be welded 40. The surface of each side profiling member 113 can be in close contact with the circumferential side wall of the glass piece to be welded 40. During the high-temperature welding process of the glass piece to be welded 40, the glass piece to be welded 40 will expand due to high temperature, and the shape of the glass piece to be welded 40 is corrected by the plurality of side profiling members 113, so as to avoid the great change of the dimensional accuracy of the glass piece to be welded 40.

[0181] In the process of high-temperature fusion of the glass piece to be fused 40, in addition to expansion due to high temperature, the glass piece to be fused 40 will also soften due to high temperature, and finally collapse, resulting in uneven product surface after fusion.

[0182] To this end, the plurality of pressing members 13 correspond to the plurality of side profiling members 113 one by one, each pressing member 13 is arranged between the corresponding side profiling member 113 and the bearing assembly 14, and is used to apply a pre-tightening force to the corresponding side profiling member 113 towards the bearing space 10a. When the glass piece to be fused 40 is located in the bearing space 10a, the pre-tightening force applied by the pressing member 13 can make the side profiling member 113 always press the glass piece to be fused 40, thereby correcting the shape of the glass piece to be fused 40, and ensuring the surface of the product formed after fusion of the glass piece to be fused 40 is flat.

[0183] It should be noted that the pressing member 13 can also be referred to as a pre-tightening member.

[0184] It should be noted that the plurality means greater than or equal to two, for example, two, three, and the like.

[0185] The above-mentioned fusion device, by surrounding the plurality of side profiling members 113 to form a bearing space 10a for accommodating the glass piece to be fused 40, the surface of each side profiling member 113 can be fitted with the circumferential side wall of the glass piece to be fused 40, and by applying a pre-tightening force to the corresponding side profiling member 113 by the plurality of pressing members 13 towards the bearing space 10a, the side profiling member 113 can always press the glass piece to be fused 40, thereby correcting the shape of the glass piece to be fused 40, and ensuring the surface of the product formed after fusion of the glass piece to be fused 40 is flat, improving the precision size of the final product.

[0186] Optionally, the glass piece to be fused 40 is formed by mutually splicing a plurality of glass sub-pieces 41, after the glass piece to be fused 40 is placed in the fusion device, the entire fusion device is placed in an atmosphere protection high-temperature furnace, so that the splicing part of the plurality of glass sub-pieces 41 is melted and fused with each other, and finally the plurality of glass sub-pieces 41 form an integral whole.

[0187] In some embodiments, the bearing assembly 14 includes a base 141, a top seat 142, and a plurality of second connecting members 143, the base 141 and the top seat 142 are arranged at intervals along the second direction D2, all the side profiling members 113 are arranged between the base 141 and the top seat 142, and the two ends of each second connecting member 143 are connected with the base 141 and the top seat 142 respectively, the plurality of second connecting members 143 are arranged at intervals around the bearing space 10a, and each pressing member 13 is arranged between at least one second connecting member 143 and the corresponding side profiling member 113.

[0188] As shown in FIG. 8, when the pressing member 13 applies the pre-tightening force to the corresponding side profiling member 113, the pressing member 13 also applies a reaction force to the second connecting member 143 connected thereto, and the base 141 and the top 142 are connected to form a whole through the plurality of second connecting members 143, so that the reaction force acts not only on the second connecting member 143, but also on the whole of the fusion device, thereby reducing the deformation of the second connecting member 143 caused by the reaction force, and further ensuring that the pressing member 13 can normally apply the pre-tightening force to the side profiling member 113.

[0189] In some embodiments, each side profiling member 113 is provided with a guide inclined surface 1133 on the side away from the bearing space 10a, each second connecting member 143 extends longitudinally along the second direction D2, and each pressing member 13 abuts between the guide inclined surface 1133 of the corresponding pressing member 13 and the second connecting member 143. Among them, the guide inclined surface 1133 intersects the second direction D2, and when the fusion device works, the pressing member 13 is pressed under the action of gravity, so that the pressing member 13 can press the glass to be fused 40.

[0190] Specifically, when the fusion device works, the second direction D2 is parallel to the direction of gravity, and at this time the guide inclined surface 1133 is inclined relative to the direction of gravity. The pressing member 13 placed between the guide inclined surface 1133 and the bearing assembly 14 will move downward along the guide inclined surface 1133 under the action of gravity due to the inclination of the guide inclined surface 1133 relative to the direction of gravity, until it abuts against the second connecting member 143. At this time, the gravity of the pressing member 13 is entirely applied to the guide inclined surface 1133, and finally changes to the horizontal pre-tightening force applied to the side profiling member 113, so that the side profiling member 113 can tightly adhere to the glass to be fused 40 located in the bearing space 10a.

[0191] It can be understood that in other embodiments, the pressing member 13 can also be a spring or the like elastic member. By arranging the spring between the second connecting member 143 and the side profiling member 113 and keeping the spring in a compressed state, the spring can also apply a certain pre-tightening force to the side profiling member 113, so that the side profiling member 113 can tightly adhere to the glass to be fused 40.

[0192] Specifically, in some embodiments, the pressing member 13 is a cylinder. The cylinder-shaped pressing member 13 has the same effect as the foregoing embodiments, which will not be described here again. When the glass to be fused 40 deforms, the movement of the pressing member 13 on the guide inclined surface 1133 can push the side profiling member 113 to move together, so that the side profiling member 113 always tightly adheres to the side wall of the glass to be fused 40.

[0193] As shown in FIGS. 10 and 11, the glass piece to be welded 40 includes a top glass sub-piece 412, a bottom glass sub-piece 411, and a plurality of side glass sub-pieces 413 arranged around the edges of the top glass sub-piece 412 and the bottom glass sub-piece 411 and respectively spliced with the top glass sub-piece 412 and the floor to form the glass piece to be welded 40. After welding, the top glass sub-piece 412, the bottom glass sub-piece 411, and each side glass sub-piece 413 form an integral whole.

[0194] In the embodiment of FIGS. 8, 9, and 10, the side glass sub-pieces 413 include three, and the side profiling members 113 include three, which are a first side profiling member 113a, a second side profiling member 113b, and a third side profiling member 113c. The first side profiling member 113a and the third side profiling member 113c are oppositely arranged, and the second side profiling member 113b is connected with the first side profiling member 113a and the third side profiling member 113c. The pressing members 13 also include three, which are a first pressing member 13a, a second pressing member 13b, and a third pressing member 13c. The first pressing member 13a is abutted between the first side profiling member 113a and two second connecting members 143, the second pressing member 13b is abutted between the second side profiling member 113b and one second connecting member 143, and the third pressing member 13c is abutted between the third side profiling member 113c and two second connecting members 143.

[0195] Further, the top glass sub-piece 412 and the bottom glass sub-piece 411 of the glass piece to be welded 40 can be directly shaped by the top seat 142 and the bottom seat 141. At this time, the top seat 142 is equivalent to the top profiling member 111, and the bottom seat 141 is equivalent to the bottom profiling member. The second connecting member 143 is equivalent to the first connecting member 12 in the foregoing embodiment.

[0196] However, different top seats 142 and bottom seats 141 need to be prepared for different glass pieces to be welded 40, which is costly. Therefore, in some embodiments, the welding device further includes a bottom profiling member 112 mounted to the bottom seat 141 and capable of being mutually fitted with the bottom surface of the welding member to shape the bottom of the glass piece to be welded 40 by the bottom profiling when the glass piece to be welded 40 is welded, so as to avoid excessive deformation of the bottom of the glass piece to be welded 40 and ensure the precision size of the product after welding. When different glass pieces to be welded 40 are replaced, only the corresponding bottom profiling member 112 needs to be replaced, without replacing the bottom seat 141.

[0197] Further, the fusing device further comprises a top profiling member 111, which is placed on the top of the glass piece 40 to be fused and is in contact with the top surface of the glass piece 40 to be fused, so as to shape the top of the glass piece 40 to be fused by the top profiling during the fusing of the glass piece 40 to be fused, to avoid excessive deformation of the top of the glass piece 40 to be fused and to ensure the precision size of the product after fusing.

[0198] For example, the bottom glass sub-piece 411 of the glass piece 40 to be fused is in contact with the surface of the bottom profiling member 112, the plurality of side glass sub-pieces 413 are respectively in one-to-one correspondence with and in contact with the plurality of side profiling members 113, and the top glass sub-piece 412 is in contact with the surface of the top profiling member 111. During the fusing of the glass piece 40 to be fused, the middle part of the top glass sub-piece 412 will soften due to high temperature. Since only the edge of the top glass sub-piece 412 can be supported on the plurality of side glass sub-pieces 413, and the top profiling member 111 is also placed above the top glass sub-piece 412, the middle part of the top glass sub-piece 412 will collapse, which will affect the precision size of the product formed after fusing.

[0199] It should be noted that the bottom profiling member 112 can also be referred to as a lower profiling member, and the top profiling member 111 can also be referred to as an upper profiling member.

[0200] Therefore, in some embodiments of the present application, the fusing device further comprises a jacking member 15, which is installed on the bearing assembly 14. The plurality of side glass sub-pieces 413 on the glass piece 40 to be fused are sequentially arranged, and the opening 40a in communication with the inside of the glass piece 40 to be fused is formed between the first side glass sub-piece 413 and the last side glass sub-piece 413. The jacking member 15 can enter the inside of the glass piece 40 to be fused through the opening 40a and abut against the top of the glass piece 40 to be fused, so as to support the top glass sub-piece 412 of the glass piece 40 to be fused by the jacking member 15, thereby avoiding the collapse of the top glass sub-piece 412.

[0201] In some embodiments, the jacking member 15 is configured to apply a jacking force to the top of the glass piece 40 to be fused towards the profiling member, i.e., the jacking member 15 can apply a jacking force to the top glass sub-piece 412 of the glass piece 40 to be fused towards the profiling member, so that the top glass sub-piece 412 can press the top profiling member 111, thereby making the top glass sub-piece 412 in contact with the surface of the top profiling member 111, and finally making the surface of the top glass sub-piece 412 after fusing more flat, thereby improving the precision size of the final product.

[0202] Specific to some embodiments, the fusing device further comprises a fixing member 191, the fixing member 191 is installed on the bearing assembly 14, the middle part of the jacking member 15 is swingably installed on the fixing member 191, and the one end of the jacking member 15 in the longitudinal direction is installed with a weight 192. The other end of the jacking member 15 extends into the interior of the glass piece 40 to be fused through the opening 40a and abuts against the top of the glass piece 40 to be fused. In this way, when the fusing device is working, the one end of the jacking member 15 installed with the weight 192 will move downward under the gravity of the weight 192, and the one end of the jacking member 15 extending into the interior of the glass piece 40 to be fused will move upward and exert a certain pressure on the top of the glass piece 40 to be fused, which is the jacking force.

[0203] Specific to the embodiment of FIG. 8, the fixing member 191 is provided with a through hole 191a, the axis direction of the through hole 191a is perpendicular to the second direction D2, the jacking member 15 is arranged in the through hole 191a, and the one end of the jacking member 15 is provided with a mounting groove 15a, the longitudinal direction of the mounting groove 15a is perpendicular to the longitudinal direction of the jacking member 15. The weight 192 is provided with a mounting column 192a, the mounting column 192a can be placed in the mounting groove 15a, so as to install the weight 192 on the one end of the jacking member 15, and the other end of the jacking member 15 can enter the interior of the glass piece 40 to be fused through the opening 40a and abut against the middle part of the top glass sub-piece 412. Under the action of the weight 192, the jacking member 15 can exert a certain pressure on the top glass sub-piece 412, so that the surface of the top glass sub-piece 412 is attached to the top profiling member 111.

[0204] During the fusing process of the glass piece 40 to be fused, in addition to the outward expansion, the inward collapse is also possible, which causes the dimensional accuracy of the glass piece 40 to be fused to change. Therefore, in some embodiments, the glass piece 40 to be fused is formed with an opening 40a communicating with the interior thereof, and the fusing device further comprises an inflation port 16, the inflation port 16 faces the opening 40a, and the inflation port 16 is used for outputting gas. The output gas enters the interior of the glass piece 40 to be fused through the opening 40a, so that the interior of the glass piece 40 to be fused is in a high-pressure state. The glass piece 40 to be fused after being heated will expand and make the glass piece 40 to be fused more closely attached to the inner wall of the bearing space 10a, thereby ensuring the dimensional accuracy of the glass piece 40 to be fused.

[0205] Further, in the actual welding process, due to the existence of air in the bearing space 10a, the outer wall of the to-be-welded glass piece 40 cannot be completely attached to the inner wall of the bearing space 10a, thereby affecting the size precision of the to-be-welded glass piece 40 after welding. Therefore, the welding device further comprises an air outlet 17, which is in communication with the bearing space 10a and is located at the opening 40a of the to-be-welded glass piece 40. Thus, the air between the inner wall of the bearing space 10a and the to-be-welded glass piece 40 is extracted through the air outlet 17, so that the to-be-welded glass piece 40 can be in close contact with the inner wall of the bearing space 10a, thereby further ensuring the size precision of the to-be-welded glass piece 40.

[0206] The above welding device, when the to-be-welded glass piece 40 is welded, the air inlet 16 fills air towards the inside of the to-be-welded glass piece 40, and the air outlet 17 extracts air between the to-be-welded glass piece 40 and the inner wall of the bearing space 10a, so that even if the to-be-welded glass piece 40 deforms during welding, the outer wall of the to-be-welded glass piece 40 can be attached to the inner wall of the bearing space 10a, thereby playing a shaping effect on the to-be-welded glass piece 40. Thus, while ensuring the welding effect, the size precision variation of the to-be-welded glass piece 40 can be reduced.

[0207] Optionally, the to-be-welded glass piece 40 is formed by splicing a plurality of glass pieces (also referred to as glass sub-pieces). After the to-be-welded glass piece 40 is placed in the welding device, the welding device is heated to melt the plurality of glass pieces of the to-be-welded glass piece 40, and the plurality of glass pieces are welded together to form a whole. After the welding device is cooled, a glass product can be obtained.

[0208] In some embodiments of the present application, the welding device comprises a top profiling member 111, a side profiling member 11, a flow divider 18, and a bottom profiling member 112. The side profiling member 11 and the flow divider 18 are arranged on the bottom profiling member 112 at one end in the second direction D2, and the side profiling member 11 and the flow divider 18 are provided with the top profiling member 111 at the other end in the second direction D2. The top profiling member 111, the side profiling member 11, the flow divider 18, and the bottom profiling member 112 form the bearing space 10a.

[0209] In the embodiment of FIG. 12, the bottom of the side profiling member 11 and the flow divider 18 is arranged on the bottom profiling member 112, and the top of the side profiling member 11 and the flow divider 18 is provided with the top profiling member 111. The top profiling member 111, the side profiling member 11, the flow divider 18, and the bottom profiling member 112 are spliced together to form a closed bearing space 10a.

[0210] The top profiling part 111 and the bottom profiling part 112 respectively fit the two ends of the glass piece 40 to be welded in the second direction D2, that is, the top and bottom of the glass piece 40 to be welded are shaped by the top profiling part 111 and the bottom profiling part 112 respectively, and the side profiling part 11 fits the circumferential side wall of the glass piece 40 to be welded, and the side wall of the glass piece 40 to be welded is shaped by the shunt 18.

[0211] Further, the shunt 18 is provided with the inflation port 16 and faces the opening 40a, that is, the part of the shunt 18 corresponding to the glass piece 40 to be welded is the opening 40a, so the shunt 18 does not participate in the shaping of the glass piece 40 to be welded, avoiding the influence of the inflation port 16 on the shaping effect of the glass piece 40 to be welded.

[0212] Further, the bottom profiling part 112 is provided with the air outlet 17, that is, the air outlet 17 is arranged at the bottom of the bearing space 10a, so that the air outlet 17 can be away from the inflation port 16, avoiding the air outlet 17 from extracting the airflow inside the glass piece 40 to be welded, affecting the inflation effect of the glass piece 40 to be welded. During the welding process of the glass piece 40 to be welded, the inflation port 16 only needs to inflate a certain amount of gas into the glass piece 40 to be welded to ensure that the gas pressure in the glass piece 40 to be welded is within a certain range, so that the glass piece 40 to be welded can be inflated. Similarly, the air outlet 17 only needs to extract a certain amount of gas to ensure that the glass piece 40 to be welded can contact the inner wall of the bearing space 10a.

[0213] In some embodiments, referring to FIG. 12, the welding device further comprises a carrier 30, the carrier 30 is provided with a receiving cavity 31 and a receiving port 32 communicating with the receiving cavity 31, the top profiling part 111 is installed on the carrier 30 and covers the receiving port 32, and the side profiling part 11, the shunt 18 and the bottom profiling part 112 are arranged in the receiving cavity 31. Since the side profiling part 11, the shunt 18 and the bottom profiling part 112 are connected to each other in a splicing manner, the side profiling part 11, the shunt 18 and the bottom profiling part 112 are accommodated in the receiving cavity 31, which can avoid the separation of the side profiling part 11, the shunt 18 and the bottom profiling part 112, and improve the reliability of the welding device.

[0214] Specifically, in some embodiments, the top profiling part 111 can be mutually buckled with the carrier 30, so that the top profiling part 111 and the carrier 30 can form an integral whole, and the side profiling part 11, the shunt 18 and the bottom profiling part 112 can be fixed in the receiving cavity 31, avoiding the change of the position of the side profiling part 11, the shunt 18 and the bottom profiling part 112 during welding.

[0215] In some embodiments, the welding device further comprises a pressing member 13 arranged at the end of the side profiling member 11 away from the flow distributor 18 and capable of applying a pre-tightening force to the side profiling member 11 towards the flow distributor 18. In actual use, the gas blown from the gas inlet 16 will first hit the inner wall of the end of the glass member 40 away from the gas inlet 16 and then gradually diffuse in the glass member 40. When the gas hits the end of the glass member 40, it will apply a certain impact force to the glass member 40, which is then transferred to the flow distributor 18 through the glass member 40.

[0216] In this way, after long-term use, the flow distributor 18 will be deformed to some extent. After deformation, the flow distributor 18 cannot tightly fit the glass member 40, resulting in a change in the size of the glass member 40. However, the pre-tightening force applied by the pressing member 13 to the side profiling member 11 towards the flow distributor 18 can offset the impact force of the gas, thereby preventing the side profiling member 11 from deforming towards the flow distributor 18 and ensuring that the side profiling member 11 can always tightly fit the glass member 40.

[0217] As shown in the embodiments of FIGS. 13 and 14, the glass member 40 comprises a top glass sub-member 412, a bottom glass sub-member 411, and a plurality of side glass sub-members 413. The top glass sub-member 412 and the bottom glass sub-member 411 are arranged at the two ends of the plurality of side glass sub-members 413 in the second direction D2. The plurality of side glass sub-members 413 are sequentially connected and arranged around the top glass sub-member 412 and the bottom glass sub-member 411, and an opening 40a is formed between the first side glass sub-member 413 and the last side glass sub-member 413.

[0218] In order to enable the side profiling member 11 to fit the side wall of the glass member 40, the side profiling member 11 comprises a plurality of side profiling members 113. The plurality of side profiling members 113 are sequentially connected and correspond to the plurality of side glass sub-members 413 one by one. The surface of each side profiling member 113 matches and fits the surface of the corresponding side glass sub-member 413, so that each side glass sub-member 413 can independently shape the corresponding side glass sub-member 413 to ensure the shaping effect.

[0219] The opening 40a is provided with the flow distributor 18. The pressing member 13 is arranged on the side of the side profiling member 113 farthest from the flow distributor 18 and applies a pre-tightening force to the side profiling member 113 towards the flow distributor 18, thereby preventing the side profiling member 113 from deforming due to long-term gas thrust and ensuring that the side profiling member 113 tightly fits the side glass sub-member 413.

[0220] In some embodiments, the side profile 11 is provided with a guide slope 1133, which is inclined relative to the second direction D2. The pressing member 13 abuts against the guide slope 1133 and the carrier 30. When the fusion device is in operation, the second direction D2 is parallel to the direction of gravity. The pressing member 13 on the guide slope 1133 is subjected to a certain pressure under the action of gravity. The pressure is converted into a pre-tightening force for pushing the side profile 11 to move horizontally, i.e. the pre-tightening force is applied to the side profile 11 by the pressing member 13 towards the flow divider 18. In the embodiment shown in FIG. 14, the glass piece 40 to be fused includes three side glass sub-pieces 413. The side profile 11 includes three side profiles 113. The side profile 113 in the middle is provided with the guide slope 1133, which abuts against the pressing member 13.

[0221] Further, the pressing member 13 is also provided with a contact slope 131, which is parallel to the guide slope 1133 and abuts against the guide slope 1133. The contact slope 131 and the guide slope 1133 increase the contact area between the pressing member 13 and the side profile 11, so that the pre-tightening force applied by the pressing member 13 to the side profile 11 is more stable.

[0222] In some embodiments, in order to send the gas outside the fusion device into the inflation port 16 on the flow divider 18, the top profile 111 is provided with a gas inlet 111a, which is used to communicate with an external gas source. The top profile 111, the carrier 30 and the flow divider 18 are all provided with gas flow channels 33, which communicate with each other. The gas flow channel 33 on the top profile 111 communicates with the gas inlet 111a. The gas flow channel 33 on the flow divider 18 communicates with the inflation port 16.

[0223] In this way, the gas input by the gas inlet 111a passes through the gas flow channels 33 on the top profile 111, the carrier 30 and the flow divider 18 in sequence, and is finally discharged from the inflation port 16 of the flow divider 18 and enters the inside of the glass piece 40 to be fused through the opening 40a of the glass piece 40 to be fused.

[0224] In some embodiments, the glass processing equipment also includes a gas extraction device and a gas supply device. The gas extraction device communicates with the gas extraction port 17, so as to extract the gas in the carrier space 10a by the gas extraction device. The gas supply device communicates with the gas inlet 111a, so as to enable the input device to communicate with the inflation port 16 and input the gas into the inflation port 16 by the gas supply device.

[0225] When the glass piece 40 to be welded is welded, the inflation port 16 is inflated towards the inside of the glass piece 40 to be welded, and the air between the glass piece 40 to be welded and the inner wall of the bearing space 10a is extracted by the air extraction port 17, so that even if the glass piece 40 to be welded is deformed during welding, the inner wall of the bearing space 10a can be fitted with the outer wall of the glass piece 40 to be welded, thereby playing a shaping effect on the glass piece 40 to be welded, thereby ensuring the welding effect while reducing the dimensional accuracy variation of the glass piece 40 to be welded.

[0226] In some embodiments, the assembly gap between the welding device and the glass piece 40 to be welded is 0.02mm-0.1mm. For example, the assembly gap between the welding device and the glass piece 40 to be welded can be, but is not limited to, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm or a range formed by any two of these values. Alternatively, the assembly gap between the welding device and the glass piece 40 to be welded is 0.05mm-0.08mm. Through the above setting, it is convenient for the assembly of the glass piece 40 to be welded in the welding device.

[0227] In some embodiments, when the glass piece 40 to be welded is placed in the bearing space 10a, the overpressure gap between the welding device and the glass piece 40 to be welded is 0.03mm-0.5mm. For example, the overpressure gap can be, but is not limited to, 0.03mm, 0.05mm, 0.1mm, 0.12mm, 0.15mm, 0.18mm, 0.2mm, 0.22mm, 0.25mm, 0.28mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm or a range formed by any two of these values. Alternatively, the overpressure gap is 0.1mm-0.3mm. Through the above setting, it can be ensured that the pressure applied to the welding device can be transmitted to the glass piece 40 to be welded.

[0228] It can be understood that the welding device space can be fixed in size in one or more directions, but at least one direction can be opened and closed and inwardly applied pressure. In the fixed size direction, the gap between the welding device and the glass piece 40 to be welded is 0.05mm-0.08mm, which is convenient for the taking and assembling of the glass piece 40 to be welded, and preferably the gap is 0.1mm-0.3mm (i.e. the aforementioned assembly gap). In the direction that can be opened and closed and inwardly applied pressure, the welding device and the glass are interference fit, that is, there is no gap or negative gap between the welding device and the glass piece 40 to be welded, the negative gap is above 0.03mm (i.e. the aforementioned overpressure gap), which is used to compress the glass piece 40 to be welded.

[0229] For example, when the glass pieces to be fused 40 are placed in the space of the fusing device, the length of the space of the fusing device is fixed in the X and Y directions, and the fusing device is only used to passively limit the position of the glass pieces to be fused 40 in the X and Y directions, then the gap between the space of the fusing device and the glass pieces to be fused 40 in the X and Y directions is 0.05mm to 0.08mm, which facilitates the taking, placing and assembling of the glass pieces to be fused 40, and preferably, the gap is 0.1mm to 0.3mm; in the Z direction, the fusing device can be opened and closed from the outside and can apply pressure inwardly to press the glass pieces to be fused 40, and in this direction, the fusing device and the glass should be interference fit, that is, there is no gap or negative gap between the fusing device and the glass pieces to be fused 40, and the negative gap is greater than 0.03mm.

[0230] In some embodiments, the first glass sub-piece 41a is one, the second glass sub-piece 41b is one, and the glass composite is a T-shaped glass or an L-shaped glass.

[0231] In some embodiments, as shown in FIG. 16, the fusing device includes a top profiling member 111 and a carrier 30 for supporting the first glass sub-piece 41a, and two side profiling members 113 for supporting the second glass sub-piece 41b, which are arranged in parallel between the top profiling member 111 and the carrier 30, and the top profiling member 111 and the two side profiling members 113 define a first carrier space 101a for accommodating the first glass sub-piece 41a, and the two support blocks define a second carrier space 102a for accommodating the second glass sub-piece 41b, and the first carrier space 101a and the second carrier space 102a are in communication, together forming a carrier space 10a.

[0232] It should be noted that in this embodiment, the top profiling member 111 can also be referred to as an upper die, the carrier 30 can also be referred to as a lower die, and the side profiling members 113 can also be referred to as support blocks.

[0233] In the step of placing the glass pieces to be fused 40 in the carrier space 10a, the first glass sub-piece 41a is placed in the first carrier space 101a, and the second glass sub-piece 41b is placed in the second carrier space 102a.

[0234] In the step of heating while pressurizing the fusing device, the top profiling member 111 and / or the carrier 30 are pressurized.

[0235] For example, as shown in FIG. 15 and FIG. 16, the fusing device includes a top profiling member 111, two side profiling members 113 and a carrier 30, and the glass pieces to be fused 40 include a first glass sub-piece 41a and a second glass sub-piece 41b.

[0236] As shown in FIG. 15 and FIG. 16, when welding, the second glass sub-piece 41b is inserted between the two side profiled pieces 113, and the carrier 30 and the side profiled pieces 113 ensure the vertical assembly of the second glass sub-piece 41b. The first glass sub-piece 41a is arranged on the section of the second glass sub-piece 41b and the two side profiled pieces 113, and the top profiled piece 111 is pressed on the first glass sub-piece 41a, so that the first glass sub-piece 41a is basically kept horizontal.

[0237] After assembly, there is a gap between the first glass sub-piece 41a and the side profiled pieces 113, and there is a gap between the top profiled piece 111 and the carrier 30, so as to ensure that the lower surface of the first glass sub-piece 41a, i.e., the first welding surface, is in contact with and pressed against the section of the second glass sub-piece 41b, i.e., the second welding surface.

[0238] After the welding device and the glass piece 40 to be welded are assembled in the above manner, the welding device and the glass piece 40 to be welded are heated to a welding temperature in a suitable device, pressure is applied to the welding device, and the temperature is kept constant for a period of time, and finally the temperature is lowered to anneal, so as to weld the first glass sub-piece 41a and the second glass sub-piece 41b together. In the process of applying pressure, pressure can be applied to the top profiled piece 111 or to the carrier 30, so that the top profiled piece 111 and the carrier 30 are folded towards each other along the central axis. During this process, the top profiled piece 111 should be as uniformly stressed as possible to ensure that the first glass sub-piece 41a is always kept horizontal, and finally the first glass sub-piece 41a will be kept perpendicular to the second glass sub-piece 41b.

[0239] It can be understood that the pressure can be applied at the beginning of the heating stage or at the constant temperature stage, as long as the pressure is applied during the constant temperature welding stage. The pressure can be continued to be applied during the cooling stage, or the pressure can be removed. In actual process, the self-weight of the glass piece 40 to be welded and the top profiled piece 111 has already started partial welding during the heating stage.

[0240] In some embodiments, in order to further improve the welding effect, the roughness (Ra) of the lower surface of the first glass sub-piece 41a, i.e., the first welding surface, and the section of the second glass sub-piece 41b, i.e., the second welding surface, is less than or equal to 10 μm, and the flatness is less than or equal to 100 μm. Further, the first welding surface and the second welding surface can also be cleaned before being contacted. By the above method, the risk of bubbles and gaps after welding is reduced, and the welding effect is improved. It can be understood that in other embodiments, the bubble and gap can also be reduced by adjusting the welding temperature and pressure, and using the characteristics of high-temperature self-adaptive assembly welding.

[0241] It can be understood that FIG. 15 and FIG. 16 only show two glass pieces 40 to be fused for T-shaped fusion, but are not limited thereto, and the two glass pieces 40 to be fused can also be used for L-shaped fusion, or three glass pieces 40 to be fused are used for U-shaped fusion or H-shaped fusion, etc.

[0242] In some other embodiments, the above glass fusion method can also be used for the fusion of a polyhedron. Specifically, there are two first glass sub-pieces 41a, and a plurality of second glass sub-pieces 41b, the plurality of second glass sub-pieces 41b further have a third fusion surface and a fourth fusion surface, the third fusion surface is arranged opposite to the second fusion surface, and the fourth fusion surface is in contact with both the second fusion surface and the third fusion surface.

[0243] In the step of placing the glass pieces 40 to be fused in the bearing space 10a, the first fusion surface of one of the first glass sub-pieces 41a is in contact with the second fusion surface of the plurality of second glass sub-pieces 41b, and the first fusion surface of the other first glass sub-piece 41a is in fusion contact with the third fusion surface of the plurality of second glass sub-pieces 41b, and the fourth fusion surfaces of two adjacent second glass sub-pieces 41b are in contact, so that the glass composite is a hollow polyhedral glass.

[0244] In this embodiment, the two first glass sub-pieces 41a can be respectively referred to as a top glass sub-piece 412 and a bottom glass sub-piece 411, and the plurality of second glass sub-pieces 41b can be referred to as side glass sub-pieces 413.

[0245] In some embodiments, the first fusion surface of one of the first glass sub-pieces 41a is provided with a through hole, and the corresponding position of the profiling member 11 supporting the first glass sub-piece 41a is also provided with a through hole, and in the step of heating while pressurizing the glass pieces 40 to be fused, air is also introduced into the polyhedral glass through the through hole, and the air pressure is 0.001 MPa to 0.6 MPa lower than the pressure of the first fusion surface. For example, the air pressure is 0.001 MPa, 0.01 MPa, 0.05 MPa, 0.1 MPa, 0.15 MPa, 0.2 MPa, 0.25 MPa, 0.3 MPa, 0.35 MPa, 0.4 MPa, 0.5 MPa, 0.6 MPa, or any range formed by any two of these values, lower than the pressure of the first fusion surface. Alternatively, the air pressure is 0.05 MPa to 0.4 MPa lower than the pressure of the first fusion surface. By the above arrangement, a pressure greater than the air blowing pressure is applied outside the fusion device to achieve internal and external balance, ensure that the assembled glass is not expanded by internal air blowing, and ensure that the glass is pressed tightly to complete fusion.

[0246] In some embodiments, the ventilation pressure is 15 KPa to 800 KPa. For example, the ventilation pressure can be, but is not limited to, 20 KPa, 30 KPa, 50 KPa, 70 KPa, 90 KPa, 100 KPa, 120 KPa, 150 KPa, 180 KPa, 200 KPa, 500 KPa, 800 KPa, or a range between any two of the above values. Alternatively, the ventilation pressure is 30 KPa to 500 KPa. When the glass is assembled outside the fusing device, the pressure of the gas blown into the hollow glass should be kept within the range of 15 KPa to 800 KPa to ensure that the glass does not collapse at high temperature.

[0247] In some embodiments, the gas blown in includes one or more of nitrogen, argon, hydrogen, or air. Alternatively, the gas blown in includes one or more of nitrogen, argon, and hydrogen, which is blown in to protect the graphite fusing device and support the glass pieces 40 to be fused. Alternatively, the gas blown in includes air, which shortens the service life of the graphite fusing device. It can be understood that when air is blown in, a high-temperature and oxidation-resistant ceramic material can be used as the fusing device.

[0248] The fusing of the hollow three-dimensional hexahedral glass is described in detail below in connection with FIGS. 17 and 18, but is not limited thereto.

[0249] Referring to FIGS. 17 and 18, the glass pieces to be fused include two first glass sub-pieces 41a and four second glass sub-pieces 41b. The first glass sub-pieces 41a have first fusing surfaces, and the second glass sub-pieces 41b have second fusing surfaces and third fusing surfaces that are fused to the first glass sub-pieces 41a, and fourth fusing surfaces that are in contact with the second fusing surfaces and the third fusing surfaces. The fusing device includes a top profiling piece 111 and a carrier 30, which define a carrier space 10a.

[0250] In this embodiment, the fusing device can also be referred to as a mold, the top profiling piece 111 can also be referred to as an upper mold, and the carrier 30 can also be referred to as a lower mold. The top profiling piece 111 and the carrier 30 define the carrier space 10a, i.e., the carrier 30 (lower mold) has the functions of the bottom profiling piece 112 and the side profiling piece 113.

[0251] Specifically, the first fusing surface of one of the first glass sub-pieces 41a is provided with a through hole, and the corresponding position of the top profiling piece 111 in contact with the first glass sub-piece 41a is also provided with a through hole. The second glass sub-pieces 41b and the first glass sub-pieces 41a are both provided with 45° beveling, and the processing size deviation is less than ±0.5 mm, so that a tight fit can be achieved after assembly.

[0252] In the fusing, the glass pieces to be fused are placed in the bearing space 10a, the first fusing surface of one of the first glass pieces 41a is brought into contact with the second fusing surface of the second glass pieces 41b, the first fusing surface of the other first glass piece 41a is brought into contact with the third fusing surface of the second glass pieces 41b, and the fourth fusing surface of two adjacent second glass pieces 41b is brought into contact, so that the glass composite is a one-face-open hollow hexahedral glass.

[0253] After assembly, the opening 111b of the top profiling piece 111 is aligned with the opening of the first glass piece 41a, and air can be blown into the interior of the glass composite through the opening 111b. A gap exists between the top profiling piece 111 and the bearing piece 30 after assembly, which ensures overpressure, and the closing pressure of the fusing device can press the glass pieces to be fused against each other to achieve high-temperature fusing.

[0254] After assembly, the opening 111b of the top profiling piece 111 is aligned with the opening of the first glass piece 41a, and air can be blown into the interior of the glass composite through the opening 111b. A gap exists between the top profiling piece 111 and the bearing piece 30 after assembly, which ensures overpressure, and the closing pressure of the fusing device can press the glass pieces to be fused against each other to achieve high-temperature fusing.

[0255] It can be understood that air blowing should be maintained throughout the fusing process, including the heating, constant-temperature, and cooling stages, to avoid glass deformation.

[0256] In the above glass fusing method, air is blown into the interior of the glass composite to be fused to form a positive hydrostatic pressure, achieving non-contact internal support to prevent the glass from collapsing due to gravity during high-temperature fusing, and achieving three-dimensional fusing. Non-contact air pressure and contact pressure are used to support and fix the glass pieces to be fused, enabling the assembly of the glass pieces to be fused at room temperature without the need for glass bonding, and enabling direct high-temperature processing for fusing.

[0257] It can be understood that the above Figs. 15-18 show two relatively specific glass fusing methods, but are not limited thereto. The fusing device can also be designed according to the shape and number of the glass composite to be fused, for example, it can be composed of more components, and is not limited to the design of the upper and lower fusing devices being closed. It can be composed of multiple components to restrict and fix the assembled glass from multiple directions, and the fusing device can press the glass pieces to be fused from multiple directions to achieve self-adaptive fusing of the glass pieces to be fused under high temperature and high pressure. In addition, the temperature, extrusion pressure, and air blowing pressure during fusing processing can be designed to vary within the above ranges according to the specific material of the glass pieces to be fused and the material of the fusing device.

[0258] In traditional techniques, high-temperature flame is used to weld glass composites, such as lamp glass. Specifically, the glass is softened or melted by high-temperature flame, and then two pieces of glass are placed together to realize fusion welding of the two pieces of glass, and then annealing is performed. However, the glass needs to be heated to a temperature above the softening point, and the glass deforms obviously, even flows and shrinks, so the size cannot be accurately controlled, and the operation precision is low. In the glass fusion welding method of some embodiments of the present application, cold forming is realized by using a fusion welding device, and the size of a single piece and the assembled size can be accurately controlled. Precise assembly is realized before fusion welding, and the assembled glass is heated and pressurized in the fusion welding device to realize fusion welding. The fusion welding temperature of this method is usually near the softening point temperature or lower, and the glass will not produce large deformation, and the size precision is high. Further, in some embodiments, the fusion welding temperature can be reduced to near the strain point temperature of the glass to be fused.

[0259] Current fusion welding technology cannot realize the fusion welding of multiple components and glass composites, because the assembly of multiple component fusion sheets is prone to mutual interference, and it is difficult to realize precise fusion sheet assembly. The glass fusion welding method of some embodiments of the present application uses a fusion welding device to limit and fix and provides air pressure support, so that precise assembly can be easily realized without fusion sheet, and fusion sheet does not affect subsequent fusion welding. Further, low-ash glue or adhesive tape can be used to fix the glass to realize room temperature assembly of the glass, and the assembled glass is placed into the fusion welding device for fixation. The glue and adhesive tape will decompose and disappear at high temperature, and will not affect subsequent fusion welding. The assembled glass is heated together in the fusion welding device, and the glass gradually softens at high temperature. Under the pressure of the fusion welding device, multiple pieces of glass are closely attached to each other, chemical bonding and material exchange occur on the interface, and fusion welding is realized.

[0260] Due to the limitation of fusion sheet technology, current fusion welding technology is only suitable for planar fusion welding, because the contact area (fusion sheet area) of three-dimensional fusion welding is small, and the width of the contact surface is usually comparable to the thickness of the glass, which makes it difficult to fuse two pieces of glass. If three pieces of glass are in contact during three-dimensional fusion welding, the fusion of two pieces of glass between the three pieces of glass is even more difficult. Because the size and flatness precision of the glass need to reach sub-micron level to realize seamless attachment of three pieces of glass, and the fusion process is prone to scratching and edge collapse, the operation is basically impossible to realize. In addition, during three-dimensional fusion welding, the glass is prone to deformation due to its own gravity at high temperature. Some embodiments of the present application solve the above problems through fusion welding device design and fusion welding process improvement, and can realize fusion welding of glass with small contact area and three-dimensional structure without fusion sheet, and the thickness of the glass is >1 mm. Specifically, the fusion welding device is used to support the glass to prevent deformation, and the fusion welding device applies pressure to fuse the glass components into one body; further, the gas non-contact support is used to support the glass, which will not leave marks in the hollow glass, avoiding the problem of difficult polishing in the future.

[0261] Therefore, the glass fusion method of pressurizing and heating the glass pieces to be fused has at least the following advantages:

[0262] (1) The glass fusion method uses a fusion device to support and fix the plurality of glass pieces to be fused, so that the plurality of glass pieces to be fused can be fixed without being laminated, and then pressurized and heated, so that the glass can be slightly deformed (<3 mm) under a certain temperature and pressure, so that the glass pieces to be fused are pressed and adapted to each other, thereby realizing assembly and fusion.

[0263] (2) The glass pieces to be fused can be fixed by using, but not limited to, adhesive tape, glue, etc., and the adhesive tape or glue is volatilized at high temperature, the glass is limited and fixed by the fusion device, and the glass fusion is realized by applying pressure to the glass.

[0264] (3) For the fusion of glass composites with cavities, the fusion device and the glass pieces to be fused are provided with air holes, the air holes are connected to the cavities, pressure is applied to the fusion device to press and fuse the glass during fusion, and air is blown into the cavities through the air holes to support the glass, so that the internal and external pressures are balanced, the assembled glass composites are fused under a certain high temperature and high pressure, and are not deformed.

[0265] In order to make the purpose and advantages of the present application more clear, the glass fusion method and its effects will be further described in detail in combination with specific examples. It should be understood that the specific examples described herein are only used to explain the present application, and should not be used to limit the present application. The following examples do not include other components except unavoidable impurities, unless otherwise specified. In the examples, the drugs and instruments are selected according to the conventional selection in the art, unless otherwise specified. The experimental methods in the examples are carried out according to the conventional conditions, such as the conditions described in the literature, books or the methods recommended by the manufacturers.

[0266] Example 1

[0267] The present embodiment provides a glass fusion method for the fusion of T-shaped glass, comprising the following steps:

[0268] (1) High-aluminum-silicon glass material with a thickness of 2 mm is used for T-shaped fusion, and the size of the two glass pieces is 120 mm long and 50 mm wide. The strain point temperature of the two glass pieces is 550℃, and the softening point is 780℃.

[0269] (2) Laser cutting is used to grind and polish the fusion surface to Ra 0.8 μm, and the flatness is 12 μm (1 mm*1 mm area), and the pure water ultrasonic cleaning is performed.

[0270] (3) The graphite fusing device shown in FIGS. 15 and 16 is used for fusing, placed horizontally, the top profiling member (upper mold) and the carrier member (lower mold) are closed with an overpressure of 0.2 mm, a vertical downward pressure of 48 N is applied to the top profiling member (upper mold) (fusing surface pressure 0.2 MPa). The fusing device and the glass pieces to be fused are heated in a nitrogen-protected atmosphere furnace at a rate of 10 °C / min, the temperature is raised to 700 °C, kept constant for 15 min, then the temperature is lowered to room temperature at a rate of 5 °C / min, the fusing device is taken out, and the fused T-shaped glass is obtained.

[0271] The fusing surface of the T-shaped glass of Example 1 is observed under a microscope at 5 times, as shown in FIG. 19, except for the fusing bubbles and the dirty gap area, the fused area accounts for more than 90% of the entire cross-sectional area.

[0272] The T-shaped glass of Example 1 is placed in an ultrasonic device for 12 h at a power of 600 W, microscopic observation of the fusing surface shows no obvious change, as shown in FIG. 20, neither separation nor new bubbles and gaps appear.

[0273] In the above test, the ultrasonic vibration test is carried out by placing the fused glass in a single tank ultrasonic machine with a volume of 500*300*250 mm, about half of the tank is filled with water, the water is kept above the glass, and the ultrasonic vibration is maintained at a power of 600 W for about 12 h.

[0274] Because the glass fusing interface is not completely attached and seamless, a small amount of water enters the edge of the interface, and the cavitation effect and mechanical vibration of the water ultrasonic can be used to test the glass fusing strength. If the glass fusing strength is poor (such as Comparative Example 3), after ultrasonic vibration, the water at the edge of the fusing interface will gradually enter the interior, causing the fusing interface to separate, and white edges can be observed under microscopic observation, as shown in FIG. 21, which is the gap formed by the water and air entering the fusing interface. When the fusing quality is worse, the fused glass will directly separate.

[0275] Example 2

[0276] This example provides a glass fusing method, which is similar to the glass fusing method of Example 1, the difference lies in the roughness, flatness, fusing temperature and fusing pressure of the glass fusing surface. In Example 2, the fusing surface is ground and polished to Ra of 11 μm, the edge flat area is locally deformed, the local flatness is 320 μm (1 mm*1 mm area), a vertical downward pressure of 72 N is applied to the upper mold during fusing (fusing surface pressure 0.3 MPa), and the fusing temperature is 780 °C. The other steps are the same as those of Example 1 and will not be repeated here.

[0277] The final fusing interface effect of the T-shaped glass prepared in Example 2 under a microscope at 5 times is shown in FIG. 22, as can be seen from FIG. 22, the glass edge area is partially fused, and the fused area still accounts for about 80% of the entire fusing surface.

[0278] Comparative Example 1

[0279] Comparative Example 1 provides a glass fusing method similar to the glass fusing method of Example 1, except that the pressure and temperature during fusing are different. In Comparative Example 1, a vertical downward pressure of 120 N (fusing surface pressure 0.5 MPa) is applied to the upper mold, and the fusing temperature is 500°C. Other steps and parameters are the same as those of Example 1 and will not be repeated here.

[0280] After the temperature rising process, the first glass sub-piece 41a and the second glass sub-piece 41b are not fused into one body, and only a pressure mark appears at the contact position.

[0281] Comparative Example 2

[0282] Comparative Example 2 provides a glass fusing method similar to the glass fusing method of Example 1, except that the pressure and temperature during fusing are different. In Comparative Example 2, a vertical downward pressure of 360 N (fusing surface pressure 1.5 MPa) is applied to the top profiling piece (upper mold), and the fusing temperature is 800°C. Other steps and parameters are the same as those of Example 1 and will not be repeated here.

[0283] After the temperature rising process, the first glass sub-piece 41a and the second glass sub-piece 41b are fused into one body, but the second glass sub-piece 41b is deformed.

[0284] Comparative Example 3

[0285] Comparative Example 3 provides a glass fusing method similar to the glass fusing method of Example 1, except that the pressure and temperature during fusing are different. In Comparative Example 3, a vertical downward pressure of 360 N (fusing surface pressure 1.5 MPa) is applied to the top profiling piece (upper mold), and the fusing temperature is 550°C. Other steps and parameters are the same as those of Example 1 and will not be repeated here.

[0286] After the temperature rising process, the first glass sub-piece 41a and the second glass sub-piece 41b are visually fused into one body, but after 12 h of ultrasonic oscillation, a white edge appears at the edge of the glass fusing surface, as shown in FIG. 21, which is a fusing interface diagram of the glass composite prepared by the glass fusing method of Comparative Example 3 under a 5-fold microscope. As can be seen from FIG. 21, the edge of the fusing interface is separated, and the fusing strength is poor.

[0287] Example 3

[0288] This example provides a glass fusing method for fusing a square box, which comprises the following steps:

[0289] (1) The high-alumina-silica glass material with a thickness of 3 mm was used to fuse the three-dimensional square box, and the structure is shown in FIGS. 17 and 18. The length and width of the glass are both 50 mm. The strain point temperature of the glass in this embodiment is 550°C, and the softening point is 700°C.

[0290] (2) The fusion surface was ground and polished to Ra of 0.5 μm, and the flatness was 15 μm (1 mm*1 mm area) by using CNC fine carving profile, and then the pure water ultrasonic cleaning was performed.

[0291] (3) The graphite fusion device shown in FIGS. 17 and 18 was used for fusion, and the device was placed horizontally. The top profiling part (upper die) and the bearing part (lower die) were closed with an overpressure of 0.1 mm. A vertical downward pressure of 120 N (vertical fusion surface pressure of 0.1 MPa) was applied to the top profiling part (upper die), and nitrogen was blown into the air hole at the same time. The air source pipeline pressure was 45 KPa. The fusion device and the glass were heated in a nitrogen-protected atmosphere furnace at a rate of 10°C / min to 650°C, and then the temperature was kept constant for 1 h. Then the temperature was decreased to room temperature at a rate of 0.5°C / min. The fused square glass box was obtained by taking out the fusion device.

[0292] The above glass box was filled with water and placed in an ultrasonic device for ultrasonic vibration at a power of 600 W for 12 h. The glass box did not appear to be broken and separated.

[0293] Comparative Example 4

[0294] Comparative Example 4 provides a glass fusion method, which is similar to the glass fusion method of Example 3, except that the air source pipeline pressure in the fusion step is different. In Comparative Example 4, the air source pipeline pressure is 5 KPa, and the other steps and parameters are the same as those of Example 3, which will not be repeated.

[0295] After the glass fusion method of Comparative Example 4 was used for temperature rising and falling treatment, the glass box fusion failed, and the glass around and on the top was deformed downward.

[0296] Comparative Example 5

[0297] Comparative Example 5 provides a glass fusion method, which is similar to the glass fusion method of Example 3, except that the fusion temperature is different. In Comparative Example 5, the fusion temperature is 530°C, and the other steps and parameters are the same as those of Example 3, which will not be repeated.

[0298] After the glass fusion method of Comparative Example 5 was used for temperature rising and falling treatment, the 6 surfaces of the glass did not appear to be fused, and the glass could be taken out one by one after demolding.

[0299] Comparative Example 6

[0300] Comparative Example 6 provides a glass fusing method similar to the glass fusing method of Example 3, except that the gas supply line pressure in the fusing step is different, in Comparative Example 6, the gas supply line pressure is 300 KPa, and the other steps and parameters are the same as in Example 3, and are not repeated here.

[0301] After the temperature rising and falling process, the glass fusing failed, and the glass cracked in many places. Because the gas supply line pressure was too high, the pressure applied by the top profiling part (upper mold) of the fusing device was not enough, the upper mold leaked and vibrated, causing the glass to crack and not fuse.

Claims

1. A method of glass fusion, wherein, The method comprises the following steps: placing a glass piece to be fused into a fusion device, the fusion device having a bearing space for accommodating the glass piece to be fused; fusing the glass piece to be fused.

2. The glass fusing method according to claim 1, wherein, Before the step of placing the glass piece to be fused into the fusion device, further comprising: lapping a plurality of glass sub-pieces to form the glass piece to be fused, and bonding two adjacent glass sub-pieces by an adhesive; In the step of fusing the glass piece to be fused, the adhesive is separated from the glass sub-pieces under the action of high temperature.

3. The glass fusing method according to claim 1 or 2, wherein the glass piece to be fused comprises a plurality of glass sub-pieces, the plurality of glass sub-pieces comprising a first glass sub-piece having a first fusing surface and a second glass sub-piece having a second fusing surface for fusing with the first fusing surface; the fusion device comprises a plurality of profiling members, and the plurality of profiling members define a bearing space therebetween, the bearing space having a shape identical to that of the glass composite to be fused; the fusing of the glass piece to be fused comprises: under the condition that the first fusing surface is in contact with the second fusing surface, pressing and heating the glass piece to be fused simultaneously to achieve fusion between the first glass sub-piece and the second glass sub-piece, wherein the pressure applied to the first fusing surface is 0.01 MPa to 0.9 MPa, and the fusing temperature is the strain point of the glass piece to be fused to the softening point of the glass piece to be fused plus 100°C.

4. The glass fusing method according to claim 3, wherein, the first fusing surface and the second fusing surface each have a roughness of less than or equal to 10 μm and a flatness of less than or equal to 100 μm, the pressure applied to the first fusing surface is 0.01 MPa to 0.2 MPa, and the fusing temperature is the strain point of the glass piece to be fused to the softening point of the glass piece to be fused; or the first fusing surface and / or the second fusing surface have a roughness greater than 10 μm and a flatness greater than 100 μm, the pressure applied to the first fusing surface is 0.2 MPa to 0.9 MPa, and the fusing temperature is the strain point temperature of the glass piece to be fused plus 50°C to the softening point temperature of the glass piece to be fused plus 100°C.

5. The glass fusing method according to claim 3, wherein, Before the step of placing the glass piece to be fused into the fusion device, further comprising: fixing the first fusing surface of the first glass sub-piece and the second fusing surface of the second glass sub-piece by using glue or adhesive tape; In the step of pressing and heating the glass piece to be fused simultaneously, the glue or adhesive tape is volatilized.

6. The glass frit method according to any one of claims 3 to 5, wherein the first glass sub-piece is two, and the second glass sub-piece is a plurality of, the plurality of second glass sub-pieces further having a third fusing surface and a fourth fusing surface, the third fusing surface being oppositely arranged with the second fusing surface, and the fourth fusing surface being in contact with both the second fusing surface and the third fusing surface; In the step of placing the glass pieces to be fused into the fusion device, the first fusion surface of one of the first glass sub-pieces is in contact with the second fusion surfaces of a plurality of the second glass sub-pieces, the first fusion surface of another of the first glass sub-pieces is in contact with the third fusion surfaces of a plurality of the second glass sub-pieces, and the fourth fusion surfaces of two adjacent second glass sub-pieces are in contact, so that the glass composite is a hollow polyhedral glass.

7. The glass fusing method according to claim 6, wherein, The first fusion surface of one of the first glass sub-pieces is provided with a through hole, and a corresponding support of one of the support members is also provided with a through hole. In the step of heating while applying pressure to the glass pieces to be fused, air is also introduced into the glass composite through the through hole. The pressure of the introduced air is 0.001 MPa to 0.6 MPa lower than the pressure applied to the first fusion surface. Optionally, the pressure of the introduced air is 0.05 MPa to 0.4 MPa lower than the pressure applied to the first fusion surface.

8. The glass fusing method according to claim 7, wherein, The pressure of the introduced air is 15 KPa to 800 KPa. Optionally, the pressure of the introduced air is 30 KPa to 500 KPa.

9. The glass frit method according to claim 7 or 8, wherein, The introduced air includes one or more of nitrogen, argon, hydrogen, and air.

10. The glass frit method according to any one of claims 1 to 9, wherein, The fusion time is 1 minute to 10 hours. Optionally, the fusion time is 30 minutes to 3 hours.

11. The glass frit method according to any one of claims 1 to 9, wherein, The absolute value of the difference between the expansion coefficient of the fusion device and the expansion coefficient of the glass pieces to be fused is not more than 50% of the expansion coefficient of the glass pieces to be fused. Optionally, the absolute value of the difference between the expansion coefficient of the fusion device and the expansion coefficient of the glass pieces to be fused is not more than 30% of the expansion coefficient of the glass pieces to be fused.

12. A fusing apparatus applied to the glass fusing method according to any one of claims 1 to 11, wherein The fusion device includes: A fixing assembly is formed with a bearing space for accommodating the glass pieces to be fused. When the glass pieces to be fused are located in the bearing space, the outer wall of the glass pieces to be fused and the inner wall of the bearing space are in close contact with each other.

13. The fusion device of claim 12, wherein, The fixing assembly is also formed with an avoiding space in communication with the bearing space. When the glass pieces to be fused are located in the bearing space, the adhesive member is located in the avoiding space.

14. The fusion device of claim 12, wherein, The fixing assembly includes a plurality of profiling members. All the profiling members surround the bearing space, and all the profiling members correspond to all the glass sub-pieces one by one. Each profiling member can be in close contact with the surface of the corresponding glass sub-piece. At least one of the profiling members can press the corresponding glass sub-piece.

15. The fusion device of claim 14, wherein, The plurality of glass sub-pieces includes a bottom glass sub-piece, a top glass sub-piece, and two side glass sub-pieces. The two side glass sub-pieces are spaced apart from each other along a first direction and are arranged on the bottom glass sub-piece. The top glass sub-piece is overlapped on one end of the two side glass sub-pieces away from the bottom glass sub-piece along a second direction intersecting the first direction. The plurality of profiling members comprises a top profiling member, a bottom profiling member and two side profiling members, the two side profiling members are arranged at intervals along the first direction and correspond to two side glass sub-members respectively, the bottom glass sub-member is arranged on the bottom profiling member, and the top profiling member is arranged on a side of the top glass sub-member away from the bottom glass sub-member. At least one of the side profiling members can press the side glass sub-member corresponding thereto in the second direction.

16. The fusion device of claim 15, wherein, Each of the side glass sub-members is provided with the adhesive member at two opposite ends in the first direction, and the adhesive member has an adhesive surface, the adhesive surface is adhered to a surface of the side glass sub-member abutting against the corresponding side profiling member, and the adhesive surface is perpendicular to the second direction.

17. The fusion device of claim 15, wherein, A side surface of the side profiling member abutting against the corresponding side glass sub-member is provided with a relief hole and / or a relief groove, and the adhesive member is located in the relief hole and / or the relief groove.

18. The fusion device of claim 15, wherein, The fixing assembly further comprises two connecting members and two pressing members, the two connecting members are respectively located on a side of each of the side profiling members away from the glass member to be fused, each of the connecting members extends longitudinally in the second direction, and two ends of each of the connecting members are connected to the bottom profiling member and the top profiling member respectively. Each of the side profiling members is provided with a guide inclined surface on a side thereof away from the bearing space, the guide inclined surface intersects the second direction, and each of the pressing members abuts between the guide inclined surface and the nearest connecting member.

19. The fusion device of claim 18, wherein, The pressing member is a cylinder, and an axis direction of the pressing member is parallel to the guide inclined surface.

20. The fusion device of claim 12, wherein, The fixing assembly comprises a bearing assembly, a plurality of side profiling members and a plurality of pressing members, the plurality of side profiling members are mounted on the bearing assembly and surround to form a bearing space for accommodating the glass member to be fused, and a surface of each of the side profiling members can be fitted with a circumferential side wall of the glass member to be fused. The plurality of pressing members correspond to the plurality of side profiling members one by one, each of the pressing members is arranged between the corresponding side profiling member and the bearing assembly, and is used for applying a pre-tightening force to the corresponding side profiling member towards the bearing space.

21. The fusion device of claim 20, wherein, The bearing assembly comprises a base, a top seat and a plurality of connecting members, the base and the top seat are arranged at intervals along the second direction, all the side profiling members are arranged between the base and the top seat, and the plurality of connecting members are arranged at intervals around the bearing space, two ends of each of the connecting members are connected to the base and the top seat respectively, and each of the pressing members is arranged between at least one of the connecting members and the corresponding side profiling member.

22. The fusion device of claim 21, wherein, Each of the side profiling members is provided with a guide inclined surface on a side thereof away from the bearing space, and the guide inclined surface intersects the second direction. Each of the connecting members extends longitudinally in the second direction, and each of the pressing members abuts between the guide inclined surface of the corresponding pressing member and the connecting member.

23. The fusion device of claim 22, wherein, The pressing member is a cylinder, and an axis direction of the pressing member is parallel to the guide inclined surface.

24. The fusion device of claim 21, wherein, The fixing assembly further comprises a bottom profiling member, which is installed on the base and can be in close contact with the bottom surface of the glass piece to be welded.

25. The fusion device of claim 20, wherein, The fixing assembly further comprises a top profiling member, which is placed on the top of the glass piece to be welded and can be in close contact with the top surface of the glass piece to be welded.

26. The fusion device of claim 25, wherein, The welding device further comprises a jacking member, which is installed on the bearing assembly. The glass piece to be welded has an opening in communication with the interior, and the jacking member can enter the interior of the glass piece to be welded through the opening and abut against the top of the glass piece to be welded.

27. The fusion device of claim 26, wherein, The jacking member is configured to apply a jacking force to the top of the glass piece to be welded towards the top profiling member.

28. The fusion device of claim 27, wherein, The fixing assembly further comprises a fixing member and a weight, the fixing member is installed on the bearing assembly, the middle part of the jacking member is swingably installed on the fixing member, and the weight is installed on one end of the jacking member in the longitudinal direction, and the other end of the jacking member extends into the interior of the glass piece to be welded through the opening and abuts against the top of the glass piece to be welded.

29. The fusion device of claim 12, wherein, The glass piece to be welded is formed with an opening in communication with the interior thereof; The fixing assembly comprises: An inflation port, which is in communication with the bearing space and faces the opening; An exhaust port, which is in communication with the bearing space and is located away from the opening.

30. The fusion device of claim 29, wherein, The fixing assembly comprises a top profiling member, a side profiling member, a flow dividing member, and a bottom profiling member, the side profiling member and the flow dividing member are arranged on the bottom profiling member at one end in the second direction, the side profiling member and the flow dividing member are provided with the top profiling member at the other end in the second direction, and the top profiling member, the side profiling member, the flow dividing member, and the bottom profiling member form the bearing space. The top profiling member and the bottom profiling member are respectively in close contact with the two ends of the glass piece to be welded in the second direction, the flow dividing member is in close contact with the circumferential sidewall of the glass piece to be welded, the flow dividing member faces the opening and is provided with the inflation port, and the bottom profiling member is provided with the exhaust port.

31. The fusion device of claim 30, wherein, The fixing assembly further comprises a bearing member, which is provided with a receiving cavity and a receiving port in communication with the receiving cavity, the top profiling member is installed on the bearing member and covers the receiving port, and the side profiling member, the flow dividing member, and the bottom profiling member are arranged in the receiving cavity.

32. The fusion device of claim 31, wherein, The top profiling member can be mutually buckled with the bearing member.

33. The fusion device of claim 31, wherein, The fixing assembly further comprises a pressing member, which is arranged on the side of the side profiling member away from the flow dividing member and can apply a pre-tightening force to the side profiling member towards the flow dividing member.

34. The fusion device of claim 33, wherein, The side profiling member is provided with a guide inclined surface, which is arranged obliquely relative to the second direction, and the pressing member abuts against the guide inclined surface and the bearing member.

35. The fusion device of claim 34, wherein, The pressing member is further provided with a contact inclined surface, which is parallel to the guide inclined surface and abuts against the guide inclined surface.

36. The fusion apparatus of claim 31, wherein, The top profiling piece is provided with an air inlet, and the top profiling piece, the bearing piece and the flow dividing piece are all provided with gas flow channels in communication with each other, the gas flow channel on the top profiling piece is in communication with the air inlet, and the gas flow channel on the flow dividing piece is in communication with the air filling port.

37. The fusion apparatus of claim 30, wherein, The glass pieces to be welded include a top glass sub-piece, a bottom glass sub-piece and a plurality of side glass sub-pieces, the top glass sub-piece and the bottom glass sub-piece are respectively arranged at two ends of all the side glass sub-pieces in a second direction, the plurality of side glass sub-pieces are sequentially connected and arranged around the top glass sub-piece and the bottom glass sub-piece, and the opening is formed between the first side glass sub-piece and the last side glass sub-piece. The plurality of side profiling pieces are sequentially connected and correspond to the plurality of side glass sub-pieces one by one, and the surface of each side profiling piece matches and is attached to the surface of the corresponding side glass sub-piece.

38. A glass processing apparatus, comprising: The welding device according to any one of claims 12-37.

39. A glass composite, wherein, Prepared by the glass welding method according to any one of claims 1-11. Prepared by the glass welding method according to any one of claims 1-11.

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