JP2016030718A - Method and apparatus for production of vacuum multiple glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a production method of vacuum multiple glass which is improved in production efficiency when both joining and sealing are carried out in a reduced-pressure space in a heating furnace.SOLUTION: A production method of vacuum multiple glass comprises: assembling an assembly including a first glass plate, a second glass plate and a sealant; carrying a plurality of assemblies and separation members located between the above and below of the plurality of assemblies into a heating furnace; and compressing the plurality of assemblies vertically in a reduced-pressure space in the heating furnace to join the first glass plate and the second glass plate together with the sealant and simultaneously seal the reduced-pressure space formed between the first and second glass plates with the sealant.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a method for producing a vacuum double-glazed glass and an apparatus for producing a vacuum double-glazed glass.

  The vacuum double-glazed glass has a first glass plate, a second glass plate, and a decompression space formed between the first glass plate and the second glass plate. The decompression space is a space having an atmospheric pressure lower than the atmospheric pressure. Vacuum double-glazed glass is excellent in heat insulation, and is used, for example, as a window glass for buildings.

  The manufacturing method of the vacuum double-glazed glass includes a step of sealing the periphery of the first glass plate and the second glass plate with a sealing material, attaching a glass tube to the stepped hole of the first glass plate, and evacuating the glass tube. And a step of melting and closing the end of the glass tube (see, for example, Patent Document 1).

JP-A-10-2161

  As another method of manufacturing a vacuum double-glazed glass, an assembly including a first glass plate, a second glass plate, and a sealing material is carried into a heating furnace, and both bonding and sealing are performed in a reduced pressure space in the heating furnace. There is a way to do it.

  When both joining and sealing are performed in the decompression space in the heating furnace, the assemblies are carried into the heating furnace one by one, and the production efficiency of the vacuum double-glazed glass is poor.

  The present invention has been made in view of the above-mentioned problems, and mainly provides a method for producing a vacuum double-glazed glass in which production efficiency is improved when both joining and sealing are performed in a reduced pressure space in a heating furnace. With a purpose.

In order to solve the above problems, according to one aspect of the present invention,
Assembling an assembly including a first glass plate, a second glass plate, and a sealing material,
A plurality of the assemblies, and a separating member positioned between the top and bottom of the plurality of assemblies are carried into a heating furnace,
In the decompression space in the heating furnace, the plurality of assemblies are compressed in the vertical direction, the first glass plate and the second glass plate are joined by the sealing material, and the first glass plate and the second glass plate are joined together. There is provided a method for producing a vacuum double-glazed glass, wherein a reduced pressure space formed between a glass plate is sealed with the sealing material.

  According to one aspect of the present invention, there is provided a method for producing a vacuum double-glazed glass in which production efficiency is improved when both joining and sealing are performed in a reduced pressure space in a heating furnace.

It is a flowchart which shows the manufacturing method of the vacuum multilayer glass by 1st Embodiment. It is sectional drawing which shows the assembly process by 1st Embodiment. It is sectional drawing which shows the joining and sealing process by 1st Embodiment. It is sectional drawing which shows the vacuum multilayer glass by 1st Embodiment. It is sectional drawing which shows the assembly process by 2nd Embodiment. It is sectional drawing which shows the joining / sealing process by 2nd Embodiment. It is sectional drawing which shows the vacuum multilayer glass by 3rd Embodiment.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the drawings, the same or corresponding components are denoted by the same or corresponding reference numerals, and description thereof is omitted. In this specification, “to” representing a numerical range means a range including numerical values before and after the numerical range.

[First Embodiment]
FIG. 1 is a flowchart showing a method for producing a vacuum double-glazed glass according to the first embodiment. FIG. 2 is a sectional view showing an assembly process according to the first embodiment. FIG. 3 is a cross-sectional view showing a bonding / sealing process according to the first embodiment.

  As shown in FIG. 1, the manufacturing method of vacuum double-glazed glass includes an assembly process (step S11), a carry-in process (step S13), a joining / sealing process (step S15), and a carry-out process (step S17). And a cutting step (step S19).

  In the assembly process (step S11), the assembly 20 is assembled as shown in FIG. The assembly 20 includes an upper glass plate 21 as a first glass plate, a lower glass plate 22 as a second glass plate, a sealing material 25, and a deaeration spacer 27. The deaeration spacer 27 does not have to be part of the vacuum multilayer glass.

  The upper glass plate 21 and the lower glass plate 22 may be general glass plates for buildings. At least one of the upper glass plate 21 or the lower glass plate 22 may have a heat ray reflective film formed thereon. The heat ray reflective film is formed of silver or tin oxide. The heat ray reflective film is also called a Low-E (Low Emissivity) film.

  The upper glass plate 21 and the lower glass plate 22 are formed of the same type of glass, but may be formed of different types of glass. The upper glass plate 21 may be larger than the lower glass plate 22 and may protrude from the lower glass plate 22 when viewed from above.

  The sealing material 25 is formed in a frame shape and disposed between the upper glass plate 21 and the lower glass plate 22. The sealing material 25 may be a paste, for example. Note that the sealing material 25 may be a heat-treated paste.

The paste includes, for example, glass frit, a solvent, an organic binder, and the like. The glass frit is made of, for example, ZnO—Bi ₂ O ₃ —B ₂ O ₃ glass, ZnO—SnO—P ₂ O ₅ glass, or the like. The solvent adjusts the viscosity of the paste and is removed by heat treatment. The organic binder binds the glass frit after drying and is removed by heat treatment. The paste may further contain ceramic particles or the like as a filler.

  For example, the paste is applied to the surface of the lower glass plate 22 facing the upper glass plate 21. Then, after removing a solvent and an organic binder by heat processing, a glass layer is obtained by melting glass frit.

  In this embodiment, the paste is applied to the surface of the lower glass plate 22 facing the upper glass plate 21, but may be applied to the surface of the upper glass plate 21 facing the lower glass plate 22. In this case, the paste may be applied and heat-treated in advance with the surface of the upper glass plate 21 facing the lower glass plate 22 facing upward.

  In addition, although the sealing material 25 of this embodiment is formed with a glass frit etc., you may form with a brazing material or a solder material.

  The deaeration spacer 27 is placed on, for example, the transport table 50 or the separating member 30, supports the upper glass plate 21, and forms a gap 28 between the upper glass plate 21 and the sealing material 25. As shown in FIG. 2, the gap 28 may be formed in at least a part of the sealing material 25, and may not be formed over the entire sealing material 25.

  The deaeration spacer 27 supports a portion that protrudes from the lower glass plate 22 of the upper glass plate 21 in a top view, and tilts the upper glass plate 21 with respect to the lower glass plate 22. The deaeration spacer 27 may support the upper glass plate 21 in parallel with the lower glass plate 22.

  The deaeration spacer 27 may change its height by pressurization. For example, the deaeration spacer 27 may be a metal piece having a cross-sectional shape (inverted V shape in FIG. 2) that is crushed by pressurization. The cross-sectional shape of the metal piece may be wavy and is not particularly limited.

  The deaeration spacer 27 may be a glass piece. The glass piece is melted at a lower temperature than the metal piece and is crushed by pressurization. The deaeration spacer 27 may be an elastic body such as a spring.

  In the assembly process, the assembly 20 is assembled on each of the transport table 50 and the separating member 30, and the assemblies 20 are stacked. The isolation member 30 isolates the plurality of assemblies 20 in the vertical direction, and prevents the assemblies 20 from being joined together by heat treatment.

  The isolation member 30 is disposed above the transport table 50 and is movable up and down in parallel with the transport table 50. A plurality of heat-resistant springs 31 are disposed between the separating member 30 and the transport table 50. The plurality of heat-resistant springs 31 are urging members that urge the isolation member 30 upward with respect to the transport base 50. The heat-resistant spring 31 is a coil spring in FIGS. 2 and 3, but may be a leaf spring, a disc spring, or the like, and is not particularly limited.

  The separating member 30 moves up and down between the pressure position (see FIG. 3) for compressing the assembly 20 in the vertical direction and the standby position (see FIG. 2) above the pressure position with respect to the transport base 50. It can be freely adjusted and is urged from the pressurizing position toward the standby position. The isolation member 30 in the standby position does not contact the assembly 20 below the isolation member 30.

  In FIG. 2, the number of stacks of the assemblies 20 is two, but may be three or more, and the number of isolation members 30 may be two or more. A plurality of heat resistant springs 31 may be disposed between the separating members 30.

  In the carrying-in process (step S13), the conveyance stand 50 which conveys the plurality of assemblies 20 and the separating member 30 is carried into the heating furnace. The conveyance stand 50 is carried in from the entrance of the heating furnace, and is carried out from the exit of the heating furnace via a plurality of zones in the heating furnace.

  As the transfer table 50 moves in the heating furnace, the paste is heat-treated, the solvent and the organic binder are removed, and a glass layer is obtained. Thereafter, a joining / sealing process is performed in a reduced pressure space in the heating furnace. Note that the heat treatment of the paste and the removal of the solvent and the organic binder may be performed by another heating furnace before being carried into the heating furnace.

In the joining / sealing step (step S15), as shown in FIG. 3, the assembly 20 is heated in the decompression space 61 in the heating furnace 60 to melt the sealing material 25. The decompression space 61 is a space having an atmospheric pressure lower than the atmospheric pressure. The pressure of the decompression space 61 may be, for example, 1 × 10 ⁻⁵ Pa to 10 Pa, and preferably 1 × 10 ⁻⁵ Pa to 0.1 Pa.

  After the sealing material 25 is melted, in the decompression space 61 in the heating furnace 60, the pressurizing member 62 disposed above the transport table 50 and the transport table 50 compress in the vertical direction across the plurality of assemblies 20. . The pressurizing member 62 includes, for example, a plurality of fluid pressure cylinders 63 and a pressurizing plate 64. The body of each fluid pressure cylinder 63 is fixed to the ceiling of the heating furnace 60, and the tip of the rod of each fluid pressure cylinder 63 is fixed to the pressure plate 64. The pressure plate 64 is movable up and down with respect to the transport table 50.

  The plurality of fluid pressure cylinders 63 lowers the pressure plate 64, compresses the assembly 20 between the pressure plate 64 and the isolation member 30 in the vertical direction, and pushes the isolation member 30 down from the standby position to the pressure position. The separating member 30 and the transport table 50 are compressed in the vertical direction with another assembly 20 interposed therebetween. When a plurality of separating members 30 are used, another assembly 20 is sandwiched between the separating members 30 and compressed in the vertical direction.

  The plurality of fluid pressure cylinders 63 lowers the pressure plate 64 and compresses the plurality of assemblies 20 between the pressure plate 64 and the transport base 50 in the vertical direction. Thereby, the height of the deaeration spacer 27 is reduced, and the formation of the gap 28 by the deaeration spacer 27 is released. Thus, both the upper glass plate 21 and the lower glass plate 22 are in close contact with the sealing material 25, and the decompression space 23 formed between the upper glass plate 21 and the lower glass plate 22 is surrounded by the sealing material 25. .

  Subsequently, in the decompression space 61 in the heating furnace 60, the sealing material 25 is cooled and solidified in a state where the plurality of assemblies 20 are pressurized by the pressurizing plate 64 and the transport base 50. Thereby, the sealing material 25 joins the upper glass plate 21 and the lower glass plate 22 and seals the decompression space 23 formed between the upper glass plate 21 and the lower glass plate 22.

  Thereafter, the plurality of fluid pressure cylinders 63 raise the pressure plate 64 and widen the gap between the pressure plate 64 and the transport table 50. The shrunk heat-resistant spring 31 is extended, the separating member 30 is lifted with respect to the conveying table 50, and the interval between the separating member 30 and the conveying table 50 is widened. As a result, the pressurization of the plurality of assemblies 20 is released.

  In this embodiment, the release timing is after the sealing material 25 is cooled and solidified, but may be any time as long as the sealing material 25 is in contact with both the upper glass plate 21 and the lower glass plate 22. However, when an elastic body is used as the deaeration spacer 27, the release timing is after the cooling and solidification of the sealing material 25.

  In the carry-out process (step S <b> 17), the carrying table 50 that carries the plurality of assemblies 20 and the separating member 30 is carried out from the heating furnace 60. Before unloading from the heating furnace 60, the plurality of assemblies 20 are gradually cooled in the heating furnace 60.

  In the cutting step (step S19), each assembly 20 carried out of the heating furnace 60 is cut to obtain a vacuum multilayer glass. For example, in the cutting step, a portion that protrudes from the lower glass plate 22 of the upper glass plate 21 in the top view is cut out to obtain a vacuum multilayer glass.

  In the cutting step, a plurality of vacuum double-glazed glasses may be obtained by cutting one assembly 20. In this case, each assembly 20 includes a plurality of sealing materials 25, and cutting is performed between the sealing materials 25.

  The cutting step is an optional step and may not be performed.

  As described above, according to this embodiment, when both joining and sealing are performed in the decompressed space in the heating furnace 60, the assembly 20 is stacked and carried into the heating furnace 60. The production efficiency is better than when the solids 20 are carried into the heating furnace 60 one by one.

  Further, according to the present embodiment, the separating member 30 is movable up and down between the pressurization position and the standby position, and is biased from the pressurization position to the standby position, and the pressurization member 62 includes a plurality of assemblies. By compressing 20 in the vertical direction, the separating member 30 is moved from the standby position to the pressurizing position. In this case, the plurality of assemblies 20 may have the same size as shown in FIG. 2 or may have different sizes. Since the size of the upper assembly 20 is not limited by the size of the lower assembly 20, it can be selected relatively freely. Moreover, the stability of each assembly 20 during conveyance is good.

  FIG. 4 is a cross-sectional view showing the vacuum multilayer glass according to the first embodiment. The vacuum multilayer glass 10 shown in FIG. 4 is obtained by the manufacturing method shown in FIGS. The vacuum multi-layer glass 10 includes a first glass plate 11, a second glass plate 12, a decompression space 13, and a sealing material 15. In addition, between the 1st glass plate 11 and the 2nd glass plate 12, the space | interval for spacer which hold | maintains the space | interval may be arrange | positioned.

  The first glass plate 11 and the second glass plate 12 may be general glass plates for buildings. At least one of the first glass plate 11 or the second glass plate 12 may have a heat ray reflective film formed thereon. The heat ray reflective film is formed of silver or tin oxide. The heat ray reflective film is also called a Low-E (Low Emissivity) film.

  The first glass plate 11 and the second glass plate 12 are formed of the same type of glass, but may be formed of different types of glass. The first glass plate 11 and the second glass plate 12 may be the same size. A decompression space 13 is formed between the first glass plate 11 and the second glass plate 12.

  The sealing material 15 joins the first glass plate 11 and the second glass plate 12 and seals the decompression space 13. The sealing material 15 is formed in a frame shape along the outer edge of the first glass plate 11 or the outer edge of the second glass plate 12 and surrounds the decompression space 13. The decompression space 13 is a space having an atmospheric pressure lower than the atmospheric pressure. The atmospheric pressure in the decompression space 13 is, for example, 0.001 to 0.2 Pa.

The sealing material 15 is composed of, for example, a glass layer. The glass layer is formed by heat-treating a paste containing glass frit. The glass frit is made of, for example, ZnO—Bi ₂ O ₃ —B ₂ O ₃ glass, ZnO—SnO—P ₂ O ₅ glass, or the like. The glass layer may include ceramic particles. The sealing material 15 may be formed of a brazing material or a solder material.

[Second Embodiment]
In the second embodiment, differences from the first embodiment will be mainly described.

  FIG. 5 is a cross-sectional view showing an assembly process according to the second embodiment. FIG. 6 is a cross-sectional view showing a bonding / sealing process according to the second embodiment.

  In the assembly process, the assembly 20A is assembled as shown in FIG. The assembly 20A includes an upper glass plate 21A as a first glass plate, a lower glass plate 22A as a second glass plate, a sealing material 25A, and a deaeration spacer 27A. The deaeration spacer 27A does not have to be part of the vacuum double-glazed glass.

  The size of the upper glass plate 21A may be different for each assembly 20A. Similarly, the size of the lower glass plate 22A may be different for each assembly 20A. An installation space for the deaeration spacer 27A can be secured.

  The sealing material 25A is formed in a frame shape, and is disposed between the upper glass plate 21A and the lower glass plate 22A. The sealing material 25A may be a paste, for example, like the sealing material 25 shown in FIG. The sealing material 25A may be a paste obtained by heat treatment.

  The deaeration spacer 27A is placed on, for example, the transport table 50, supports the upper glass plate 21A, and forms a gap 28A between the upper glass plate 21A and the sealing material 25A. As shown in FIG. 5, the gap 28 </ b> A may be formed in at least a part of the sealing material 25 </ b> A, and may not be formed over the entire sealing material 25 </ b> A.

  In the assembly process, a plurality of assemblies 20A are stacked on the transport table 50, and a separating member 30A is disposed between the assemblies 20A. The isolation member 30A isolates the plurality of assemblies 20A in the vertical direction, and prevents the assemblies 20 from being joined together by heat treatment.

  The isolation member 30A may be a heat-resistant cloth knitted from heat-resistant fibers such as an assembled stainless fiber or silica fiber. The isolation member 30A is placed on the assembly 20A (specifically, the upper glass plate 21A) below the isolation member 30A.

  In FIG. 5, the number of stacked assemblies 20A is two, but may be three or more, and the number of isolation members 30A may be two or more.

  In the carrying-in process, the carrying table 50 that carries the plurality of assemblies 20A and the separating member 30A is carried into the heating furnace. The conveyance stand 50 is carried in from the entrance of the heating furnace, and is carried out from the exit of the heating furnace via a plurality of zones in the heating furnace.

  As the carrier 50 moves in the heating furnace, the paste is heat-treated, the solvent and the organic binder are removed, and a glass layer is obtained. Thereafter, a joining / sealing process is performed in a reduced pressure space in the heating furnace. Note that the heat treatment of the paste and the removal of the solvent and the organic binder may be performed by another heating furnace before being carried into the heating furnace.

  In the joining / sealing process, as shown in FIG. 6, the assembly 20 is heated in the decompression space 61 in the heating furnace 60 to melt the sealing material 25. Then, the pressurizing member 62 disposed above the transport table 50 and the transport table 50 compress the upper and lower sides with the plurality of assemblies 20A sandwiched therebetween, and the gap 28A is formed by the deaeration spacer 27A. To release.

  The plurality of fluid pressure cylinders 63 lower the pressure plate 64 and compress the plurality of assemblies 20 </ b> A vertically with the pressure plate 64 and the transport base 50. Thereby, the height of the deaeration spacer 27A is reduced, and the formation of the gap 28A by the deaeration spacer 27A is released. Thus, both the upper glass plate 21A and the lower glass plate 22A are in close contact with the sealing material 25A, and the reduced pressure space 23A formed between the upper glass plate 21A and the lower glass plate 22A is surrounded by the sealing material 25A. .

  Subsequently, in the decompression space 61 in the heating furnace 60, the sealing material 25 </ b> A is cooled and solidified in a state where the plurality of assemblies 20 </ b> A are pressurized by the pressure plate 64 and the transport table 50. Thus, the sealing material 25A joins the upper glass plate 21A and the lower glass plate 22A, and seals the decompressed space 23A formed between the upper glass plate 21A and the lower glass plate 22A.

  Thereafter, the plurality of fluid pressure cylinders 63 raise the pressure plate 64 to release the pressure of each assembly 20A. The release timing is after the cooling and solidification of the sealing material 25A in this embodiment, but may be any time as long as it is after the contact between both the upper glass plate 21A and the lower glass plate 22A and the sealing material 25A. However, when an elastic body is used as the deaeration spacer 27A, the release timing is after the cooling and solidification of the sealing material 25A.

  In the carrying-out process, the carrying table 50A carrying the plurality of assemblies 20A and the separating member 30A is carried out from the heating furnace 60. Before being carried out of the heating furnace 60, the plurality of assemblies 20 </ b> A are gradually cooled in the heating furnace 60.

  In the cutting step, each assembly 20A carried out of the heating furnace 60 is cut to obtain a vacuum double-glazed glass. For example, in the cutting step, a portion that protrudes from the lower glass plate 22A of the upper glass plate 21A in a top view is cut out to obtain a vacuum multilayer glass.

  In the cutting step, a plurality of vacuum double-glazed glasses may be obtained by cutting one assembly 20A. In this case, each assembly 20A includes a plurality of sealing materials 25A, and cutting is performed between the sealing materials 25A.

  The cutting step is an optional step and may not be performed.

  As described above, according to the present embodiment, when both joining and sealing are performed in the reduced pressure space in the heating furnace 60, the assembly 20A is stacked and carried into the heating furnace 60. The production amount can be increased as compared with the case where the components are carried into the heating furnace 60 one by one.

  Further, according to the present embodiment, the isolation member 30A is placed on the assembly 20A below the isolation member 30A. Since the assemblies 20A are stacked via the separating member 30A, the height at the time of assembly is low when the number of the assemblies 20A is the same. If the height during assembly is the same, the number of assemblies can be increased.

  In addition, since the vacuum multilayer glass obtained by this embodiment is the same as that of the vacuum multilayer glass 10 shown in FIG. 4, description is abbreviate | omitted.

[Third Embodiment]
FIG. 7 is a cross-sectional view showing a vacuum multilayer glass according to the third embodiment. The vacuum multilayer glass 10A includes a first glass plate 11A, a second glass plate 12A, a decompression space 13A, and a sealing material 15A.

  The vacuum double-glazed glass 10A shown in FIG. 7 is different from the vacuum double-glazed glass 10 shown in FIG. 4 in that the sealing material 15A has a thermal stress relaxation structure. Hereinafter, differences will be mainly described.

  The sealing material 15A includes a first coupling member 15Aa, a second coupling member 15Ab, and a metal member 15Ac.

  The first coupling member 15Aa and the second coupling member 15Ab are made of, for example, a glass layer. The glass layer is formed by heat-treating a paste containing glass frit. The glass layer may include ceramic particles. The first coupling member 15Aa and the second coupling member 15Ab may be formed of a brazing material or a solder material.

  The first coupling member 15Aa is formed in a frame shape along the outer edge of the first glass plate 11A, and couples the first glass plate 11A and the metal member 15Ac. The first coupling member 15Aa is not in contact with the second glass plate 12A and is not coupled with the second glass plate 12A.

  The second coupling member 15Ab is formed in a frame shape along the outer edge of the second glass plate 12A, and couples the second glass plate 12A and the metal member 15Ac. The second coupling member 15Ab is not in contact with the first glass plate 11A and is not coupled with the first glass plate 11A.

  As shown in FIG. 7, the metal member 15Ac has a step, and movably contacts the first glass plate 11A and movably contacts the second glass plate 12A. The metal member 15Ac is formed flat and does not have to contact the first glass plate 11A and the second glass plate 12A. The metal member 15Ac may have a section having a linear cross section and a section having a curved cross section.

  The metal member 15Ac has a portion that is elastically deformed between a portion that is coupled to the first coupling member 15Aa and a portion that is coupled to the second coupling member 15Ab. Therefore, the thermal stress generated by the temperature difference between the first glass plate 11A and the second glass plate 12A can be absorbed by the elastic deformation of the metal member 15Ac, and the breakage of the vacuum multilayer glass 10A can be suppressed.

  The vacuum double-layer glass 10A shown in FIG. 7 can be manufactured by the manufacturing method shown in FIGS. 1 to 6 similarly to the vacuum double-layer glass 10 shown in FIG.

  As mentioned above, although embodiment of the manufacturing method of vacuum multilayer glass, etc. were described, this invention is not limited to the said embodiment etc., In the range of the summary of this invention described in the claim, various deformation | transformation Improvements are possible.

  For example, the number and arrangement of the deaeration spacers 27 may vary widely. The deaeration spacer 27 only needs to form a gap between at least one of the upper glass plate 21 and the lower glass plate 22 and the sealing material 25.

  The deaeration spacer 27 changes its height by pressurization in the above embodiment, but may be one that does not change its height. In this case, by changing the position or orientation of the deaeration spacer 27 with respect to the upper glass plate 21 and the lower glass plate 22, the formation of the gap 28 by the deaeration spacer 27 can be released.

  The deaeration spacer 27 may not be provided.

  The pressure member 62 is disposed above the conveyance table 50 and compresses in the vertical direction with the plurality of assemblies 20 sandwiched between the pressure member 62 and the conveyance table 50, but is not particularly limited. For example, the pressure member 62 may be disposed below the transport table 50, and may be disposed above and below the transport table 50. In these cases, the transport table 50 may be movable up and down with respect to the floor of the heating furnace 60. Further, as shown in FIGS. 3 and 6, the transfer table 50 may move along a rail installed on the floor of the heating furnace 60, but moves along a rail installed on the ceiling of the heating furnace 60. May be. The heating furnace 60 of the above embodiment is a continuous type, but may be a batch type.

DESCRIPTION OF SYMBOLS 10 Vacuum multilayer glass 11 1st glass plate 12 2nd glass plate 13 Decompression space 15 Sealing material 20 Assembly 21 1st glass plate 22 2nd glass plate 23 Decompression space 25 Sealing material 27 Deaeration spacer 50 Carriage 60 Heating Furnace 61 Depressurized space 62 Pressure member 63 Fluid pressure cylinder 64 Pressure plate

Claims (9)

Assembling an assembly including a first glass plate, a second glass plate, and a sealing material,
A plurality of the assemblies, and a separating member positioned between the top and bottom of the plurality of assemblies are carried into a heating furnace,
In the decompression space in the heating furnace, the plurality of assemblies are compressed in the vertical direction, the first glass plate and the second glass plate are joined by the sealing material, and the first glass plate and the second glass plate are joined together. A method for producing a vacuum double-glazed glass, wherein a reduced pressure space formed between a glass plate is sealed with the sealing material. The isolation member can be raised and lowered between a pressure position for compressing the assembly in the vertical direction and a standby position above the pressure position, and is biased from the pressure position to the standby position,
The manufacturing method of the vacuum multilayer glass of Claim 1 by which the said isolation member is moved to the said pressurization position from the said stand-by position by compressing these several assemblies to an up-down direction.   The method for producing a vacuum double-glazed glass according to claim 1, wherein the isolation member is placed on the assembly below the isolation member.   The said assembly contains the deaeration spacer which forms a clearance gap between at least one of the said 1st glass plate or the said 2nd glass plate, and the said sealing material, The any one of Claims 1-3. Manufacturing method of vacuum multilayer glass.   5. The height of the deaeration spacer is reduced by compressing the plurality of assemblies in the vertical direction in the decompression space in the heating furnace, and the formation of the gap by the deaeration spacer is released. The manufacturing method of the vacuum double glazing described in 2.   The formation of the gap by the deaeration spacer is canceled by changing the position or orientation of the deaeration spacer with respect to the first glass plate and the second glass plate in the decompression space in the heating furnace. Item 5. A method for producing a vacuum double-glazed glass according to Item 4. A heating furnace having therein a decompression space into which an assembly made of a first glass plate, a second glass plate, and a sealing material, and a separating member for isolating the plurality of assemblies in the vertical direction;
A pressure member that compresses the plurality of assemblies in the vertical direction in a decompression space in the heating furnace,
The pressurizing member compresses the plurality of assemblies in the vertical direction, so that the first glass plate and the second glass plate are joined by the sealing material and the first glass plate and the second glass. An apparatus for producing a vacuum double-glazed glass, wherein a reduced-pressure space formed between plates is sealed with the sealing material. The isolation member can be raised and lowered between a pressure position for compressing the assembly in the vertical direction and a standby position above the pressure position, and is biased from the pressure position to the standby position,
The vacuum multilayer glass manufacturing apparatus according to claim 7, wherein the pressure member compresses the plurality of assemblies in the vertical direction so that the isolation member is moved from the standby position to the pressure position.   The apparatus for manufacturing a vacuum double-glazed glass according to claim 8, wherein the isolation member is placed on the assembly below the isolation member.

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