JP2016210626A - Method for producing vacuum multi-layered glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a vacuum multi-layered glass in "flow type manner".SOLUTION: Provided is a method for producing vacuum multi-layered glass including: a step of placing an assembly having a bonding layer and an open space between a 1'st and a 2'nd glass substrates, on a transportation table and in which the bonding layer is arranged in a picture-frame shape on the 1'st and/or 2'nd glass substrate and the open space is maintained by a bearing member; a step of transporting, by the transportation table, the assembly into a vacuum chamber under vacuum environment in which a bearing release member is installed; a step of heating the assembly in the vacuum chamber and by using the bearing release member the maintenance of the open space by the bearing member is released, and by the contact of the bonding layer with the 1'st and 2'nd glass substrates an enclosed space is formed between the 1'st and 2'nd glass substrates; and a step of discharging the assembly from the vacuum chamber by the transportation table.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a method for producing a vacuum multilayer glass.

  A so-called “vacuum double-glazed glass” having a sealed space held in a low-pressure or vacuum state between a pair of glass substrates has an excellent heat insulating effect, and thus, for example, a window glass for buildings such as buildings and houses. Widely used in applications.

  The vacuum double-glazed glass is manufactured as follows. First, a first glass substrate and a second glass substrate are prepared. A bonding layer is formed on the surface of one glass substrate along the periphery. Next, the first and second glass substrates are laminated so that both are opposed to each other through the bonding layer to form an assembly. Next, this assembly is heated to melt and soften the bonding layer and bond both glass substrates. Thereby, a sealed space is formed between both glass substrates. Next, the inside of the sealed space is decompressed using an opening provided in advance in the first glass substrate. Then, the opening utilized for the decompression process is sealed, and a vacuum double-glazed glass is manufactured (Patent Document 1).

JP-A-10-2161

  As described above, the conventional vacuum multilayer glass manufacturing method includes the step of reducing the pressure in the sealed space of the assembly using the opening provided in the glass substrate and the step of sealing the opening. It is.

  However, although such a manufacturing method can be carried out by the so-called “batch type”, it is difficult to carry out by the “flow type”. That is, the conventional manufacturing method is not suitable for continuously manufacturing the vacuum double-glazed glass in a flow operation on a production line or the like. For this reason, from the viewpoint of production efficiency, there is a great demand for manufacturing vacuum double-glazed glass by the “flow method”.

  This invention is made | formed in view of such a background, and this invention aims at providing the manufacturing method of a vacuum double-glazed glass which can manufacture a vacuum double-glazed glass by a "flow system". And

In the present invention, there is provided a method for producing a vacuum double-glazed glass having a reduced pressure sealed space between a first glass substrate and a second glass substrate facing each other,
(A) A step of placing an assembly having a bonding layer and an open space between a first glass substrate and a second glass substrate on a transport table, wherein the bonding layer includes the first glass substrate and the second glass substrate. And / or arranged in a frame shape on the second glass substrate, the open space being maintained by a support member;
(B) transporting the assembly into a vacuum chamber under a vacuum environment in which a support release member is installed by the transport table;
(C) The assembly is heated in the vacuum chamber, the maintenance of the open space by the support member is released by using the support release member, and the bonding layer is the first and second glass substrates. A closed space surrounded by the bonding layer is formed between the first glass substrate and the second glass substrate by contacting with the first glass substrate; and
(D) discharging the assembly from the vacuum chamber by the transfer table;
A method for producing a vacuum double-glazed glass is provided.

Here, in the manufacturing method according to the present invention, in the assembly, the second glass substrate is disposed above the first glass substrate,
The support member has a support portion that supports the second glass substrate and a base portion on which the support portion is installed,
In the step (c), the support releasing member presses the base portion, and the support portion slides away from the second glass substrate, whereby the second glass substrate falls, and the opening is released. The maintenance of the space may be released.

  Further, in the manufacturing method according to the present invention, the support member may be formed with a slope on the top, and in the step (c), the support release member may press the slope.

In the manufacturing method according to the present invention, in the assembly, the second glass substrate is disposed above the first glass substrate,
The support member includes a support portion that supports the second glass substrate and a base portion that allows the support portion to rotate,
In the step (c), the support release member may come into contact with the support part, and the support part may be rotated to cause the second glass substrate to fall and release the maintenance of the open space. .

  In the manufacturing method according to the present invention, the support release member may be attached to an upper portion of the vacuum chamber.

In the manufacturing method according to the present invention, the pressure in the vacuum chamber may be in the range of 1 × 10 ⁻⁵ Pa to 10 Pa.

  In the manufacturing method according to the present invention, the temperature in the vacuum chamber may be 150 ° C. or higher, and may be a temperature lower than the lower softening point of the first and second glass substrates.

  In the manufacturing method according to the present invention, the bonding layer may have a vitrified layer.

In the manufacturing method according to the present invention, in the step (a), the assembly further includes a frame-shaped second bonding layer and a frame-shaped metal between the first and second glass substrates. And the bonding layer is disposed on the first glass substrate, the second bonding layer is disposed on the second glass substrate, and the metal member includes the bonding layer and the second glass substrate. Between the bonding layers,
In the step (c), the sealed space surrounded by the bonding layer, the metal member, and the second bonding layer is formed between the first glass substrate and the second glass substrate. May be.

  The present invention can provide a method for producing a vacuum double-glazing capable of producing a vacuum double-glazing by a “flow method”.

It is sectional drawing which showed typically an example of the structure of vacuum multilayer glass. It is the flowchart which showed schematically the manufacturing method of the vacuum double layer glass by one Embodiment of this invention. It is the figure which showed typically the 1st glass substrate and 2nd glass substrate which are used for an assembly. It is the figure which showed the cross section of the assembly typically. FIG. 5 is a schematic top view of the assembly shown in FIG. 4. It is a top view of the assembly which showed another example of arrangement form of a support member typically. It is sectional drawing which showed typically the mode at the time of the support function by a support member being lost by the support release member provided in the vacuum chamber. It is a schematic fragmentary sectional view of the vacuum multilayer glass which has another sealing member. It is the figure which showed typically the cross section of another assembly which has a different supporting member from the example of FIG. In the assembly shown in FIG. 9, it is the figure which showed typically the mode at the time of the support function by a support member being lost. It is the figure which showed typically the cross section of another assembly which has a different supporting member from the example of FIG. 4 and FIG. In the assembly shown in FIG. 11, it is the figure which showed typically the mode at the time of the support function by a support member being lost.

  Hereinafter, the present invention will be described with reference to the drawings.

(About the structure of the vacuum double-layer glass)
First, with reference to FIG. 1, an example of a structure of a vacuum double-glazed glass is demonstrated easily.

  In FIG. 1, an example of a structure of vacuum double layer glass is shown roughly.

  As shown in FIG. 1, the vacuum multi-layer glass 100 includes a first glass substrate 110, a second glass substrate 120, a sealed space 130 formed between both glass substrates 110 and 120, and the sealed space. And a sealing member 150 surrounding 130.

  The first glass substrate 110 has a first surface 112 and a second surface 114. In the vacuum multi-layer glass 100, the first glass substrate 110 is disposed so that the second surface 114 side is the outside. Similarly, the second glass substrate 120 has a third surface 122 and a fourth surface 124. In the vacuum double-glazed glass 100, the second glass substrate 120 is disposed such that the fourth surface 124 side is the outside. Therefore, the sealed space 130 is formed between the first surface 112 of the first glass substrate 110 and the third surface 122 of the second glass substrate 120.

  The sealed space 130 is maintained in a vacuum state. Here, the degree of vacuum of the sealed space 130 is not particularly limited, and may be any pressure lower than atmospheric pressure. Generally, the pressure of the sealed space 130 is about 0.2 Pa to 0.001 Pa.

  If necessary, the vacuum double-glazed glass 100 may have one or more pillars (not shown) in the sealed space 130.

  The seal member 150 is a member for hermetically holding the sealed space 130, and the seal member 150 is configured over the entire periphery of the sealed space 130.

  As the structure of the seal member 150, various structures have been proposed. For example, in the example of FIG. 1, the seal member 150 is configured by a single bonding layer 155. The bonding layer 155 is installed in a “frame shape” around the first or second glass substrate 110 or 120 when the vacuum multilayer glass 100 is viewed from the thickness direction (Z direction).

  In the present application, the term “frame shape” means a general term for a shape constituted by a “frame” having an outer outline and an inner outline, with the inside of a flat plate shape removed in plan view. That is, it means that it is formed along the periphery of the vacuum double-glazed glass 100. However, the outer contour and / or inner contour of the “frame-shaped” member is not necessarily limited to a substantially rectangular parallelepiped shape such as a forehead, for example, a polygon such as a quadrangle, a substantially quadrangle, a trapezoid, a substantially trapezoid, a circle, a substantially The shape may be circular, elliptical or substantially elliptical. Further, the outer contour and the inner contour of the “frame-shaped” member are not necessarily similar, and both may be different shapes, for example.

  The material and configuration of the bonding layer 155 are not particularly limited as long as the first glass substrate 110 and the second glass substrate 120 can be bonded to each other by heat treatment. For example, the bonding layer 155 may be a vitrified layer (softening point 350 to 600 ° C.).

  The vitrified layer is formed by firing a paste containing glass frit. The vitrified layer contains a glass component, but may further contain ceramic particles.

The composition of the glass component contained in the vitrified layer is not particularly limited. The glass component contained in the vitrified layer may be, for example, ZnO—Bi ₂ O ₃ —B ₂ O ₃ based glass or ZnO—SnO—P ₂ O ₅ based glass.

Table 1 shows an example of the composition of ZnO—Bi ₂ O ₃ —B ₂ O ₃ based glass that can be used for the glass component contained in the vitrified layer. Table 2 shows an example of the composition of ZnO—SnO—P ₂ O ₅ based glass that can be used for the glass component contained in the vitrified layer.

あるいは、接合層１５５は、ろう材またははんだ材料を含んでも良い。

Alternatively, the bonding layer 155 may include a brazing material or a solder material.

  Furthermore, in the example of FIG. 1, the cross section of the bonding layer 155 is shown in a substantially rectangular shape with rounded corners. However, this is merely an example, and the cross section of the bonding layer 155 may have other shapes such as a substantially elliptical shape and a substantially trapezoidal shape.

(About the manufacturing method of the vacuum double layer glass by one Example of this invention)
Hereinafter, with reference to FIG. 2, the manufacturing method of the vacuum multilayer glass by one Example of this invention is demonstrated in detail.

  In FIG. 2, the flow of the manufacturing method (1st manufacturing method) of the vacuum multilayer glass by one Example of this invention is shown roughly.

As shown in FIG. 2, the first manufacturing method is:
(A) A step of placing an assembly having a bonding layer and an open space between a first glass substrate and a second glass substrate on a transport table, wherein the bonding layer includes the first glass substrate and the second glass substrate. And / or a second glass substrate arranged in a frame shape, and the open space is maintained by a support member, an open space forming step (step S110);
(B) A vacuum chamber transfer step (step S120) in which the transfer unit transfers the assembly into a vacuum chamber in a vacuum environment in which a support release member is installed;
(C) The assembly is heated in the vacuum chamber, the maintenance of the open space by the support member is released using the support release member, and the bonding layer is formed by the first and second glass substrates. A sealed space forming step (step S130) in which a sealed space surrounded by the bonding layer is formed between the first glass substrate and the second glass substrate by contacting with the first glass substrate;
(D) a vacuum chamber discharging step (step S140) for discharging the assembly from the vacuum chamber by the transfer table;
Have

  Hereinafter, each step will be described in detail.

(Step S110)
First, a first glass substrate and a second glass substrate are prepared. The material and dimensions of both glass substrates are not particularly limited. For example, both glass substrates may be soda lime glass and / or alkali-free glass. The materials and dimensions of both glass substrates are not necessarily the same.

(Formation of bonding layer)
Next, a bonding layer is formed in a frame shape over the periphery on one surface of the first glass substrate and / or one surface of the second glass substrate. In the following example, it is assumed that the bonding layer is formed only on one surface (first surface) of the first glass substrate.

  FIG. 3 shows a first glass substrate 310 having first and second surfaces 312 and 314 and a second glass substrate 320 having third and fourth surfaces 322 and 324. A bonding layer 356 is formed on the frame on the first surface 312 of the first glass substrate 310.

  As described above, the material of the bonding layer 356 is not particularly limited. Here, the bonding layer 356 is formed on the first surface 312 of the first glass substrate 310 as an example in which the bonding layer 356 is formed of a glass solidified layer. A method for forming the bonding layer 356 will be described.

  When the glass solidified layer 356 is formed around the first surface 312 of the first glass substrate 310, first, a paste for the glass solidified layer is prepared. Usually, the paste includes glass frit, ceramic particles, a polymer, an organic binder, and the like. However, the ceramic particles may be omitted. The glass frit eventually becomes a glass component constituting the glass solidified layer 356.

  The prepared paste is applied around the first surface 312 of the first glass substrate 310.

  Next, the first glass substrate 310 containing the paste is dried. The conditions for the drying treatment are not particularly limited as long as the organic binder in the paste is removed. The drying process may be performed, for example, by holding the first glass substrate 310 at a temperature of 100 ° C. to 200 ° C. for about 30 minutes to 1 hour.

  Next, in order to pre-fire the paste, the first glass substrate 310 is heat-treated at a high temperature. The conditions for the heat treatment are not particularly limited as long as the polymer contained in the paste is removed. The heat treatment may be performed, for example, by holding the first glass substrate 310 in the temperature range of 300 ° C. to 470 ° C. for about 30 minutes to 1 hour. Thereby, a paste is baked and a glass solidification layer is formed.

(Formation of assembly)
Next, an assembly having an open space between the first glass substrate 310 and the second glass substrate 320 is formed.

  4 and 5 schematically show a configuration example of the assembly 370. FIG. FIG. 4 shows a schematic cross-sectional view of the assembly 370, and FIG. 5 shows a schematic top view of the assembly 370. In FIG. 5, the second glass substrate 320 is omitted for clarity.

  As shown in FIGS. 4 and 5, the assembly 370 has the first surface 312 of the first glass substrate 310 and the third surface 322 of the second glass substrate 320 facing each other. The two glass substrates 310 and 320 are stacked on each other.

  However, a support member 372 is disposed between the glass substrates 310 and 320, and thus an open space 329 is formed between the glass substrates 310 and 320.

  More specifically, due to the presence of the support member 372, at least a part of the bonding layer 356 is in a non-contact state with the third surface 322 of the second glass substrate 320, whereby the assembly 370 is placed on the upper surface ( When viewed from the Z direction in the figure, gas communication is possible between a region surrounded by the bonding layer 356 and a region outside the region.

  In addition, when a pillar that maintains the distance between the first glass substrate 310 and the second glass substrate 320 is disposed as the vacuum double-glazed glass 100, the first glass substrate 320 is laminated before the second glass substrate 320 is laminated in this step. A plurality of pillars may be arranged on the first surface 312 of one glass substrate 310.

  The support member 372 includes a base portion 374 and a support portion 376, and an inclined surface 378 is formed on the upper portion of the base portion 374. The support portion 376 is formed on the side portion of the base portion 374 so as to extend in a substantially horizontal direction. In addition, the slope 378 is formed on the upper portion of the base portion 374 so as to be inclined toward the support portion 376 (so that the height is reduced).

  The support member 372 makes the second glass substrate 320 “floating” from the first glass substrate 310 by bringing the upper surface of the support portion 376 into contact with the third surface 322 of the second glass substrate 320. Can be supported.

  Such an assembly 370 including the support member 372 is placed on the transport table 380.

  As shown in FIG. 5, the transport table 380 can move in a substantially horizontal direction (direction of arrow F <b> 1) with respect to the XY plane (installation surface of the assembly 370). For this reason, the assembly 370 on the conveyance stand 380 can also move in the direction of the arrow F1. The transfer table 380 may extend to the inside of the vacuum chamber, the outlet of the vacuum chamber, and the outside thereof, for example.

  4 and 5, the assembly 370 has a single support member 372, and the base 374 of the support member 372 is outside the first glass substrate 310, and The glass substrate 310 is disposed in the vicinity of one side 316a (see FIG. 5). Further, the base 374 of the support member 372 is disposed near the center of the side 316a.

  However, this is only an example. That is, as long as the open space 329 is formed between the first and second glass substrates 310 and 320, the number and the arrangement location of the support members 372 are not particularly limited. For example, a plurality of support members 372 may exist.

  In FIG. 6, the example of another arrangement | positioning form of the supporting member 372 is shown. This figure shows a schematic top view of the assembly. As in FIG. 5, the second glass substrate 320 is also omitted in FIG. 6 for clarity.

  In the example of FIG. 6, the assembly 370a includes two support members 372-1 and 372-2. The bases of these support members 372-1 and 372-2 are outside the first glass substrate 310 and in the vicinity of both ends of one side 316a of the first glass substrate 310 (near two adjacent corners). ).

  Furthermore, the shape of the base 374 of the support member 372 is not particularly limited. For example, the base 374 of the support member 372 may have a stretching axis in the height direction (Z direction) as shown in FIGS. In addition, the support portion 376 of the support member 372 is installed at a height higher than the bonding layer 356 in the base portion 374, and at a height at which at least the closest bonding layer 356 portion does not contact the second glass substrate 320. It only has to be installed.

  In addition, various modes are conceivable as the number, shape, and arrangement of the support members 372.

  In the configuration of the assembly 370 as shown in FIG. 4, the state of the upper second glass substrate 320 is unstable, and the position may be shifted during handling. In such a case, a stop member that restrains the movement of the second glass substrate 320 may be provided around the second glass substrate 320. Alternatively, the second glass substrate 320 may be temporarily fixed to the first glass substrate 310. Such stop members and temporary fastening methods are well known in the art and will not be described further here.

(Step S120)
Next, the assembly 370 configured in the above-described steps is transported by the transport base 380, and the assembly 370 is inserted into the vacuum chamber. The conveyance speed of the assembly 370 is not particularly limited. The assembly 370 may be preheated before being inserted into the vacuum chamber.

The inside of the vacuum chamber is maintained in a reduced pressure environment. Moreover, the pressure in a vacuum chamber may be the range of 1 * 10 < ^-5 > Pa-10Pa, for example. Preferably, the pressure in the vacuum chamber is 0.1 Pa or less.

(Step S130)
The assembly 370 is heated in a vacuum chamber and decompressed. For example, the inside of the vacuum chamber may be maintained at a high temperature and the entire assembly 370 may be heated, or the assembly 370 may be heated while being transported through the vacuum chamber. Further, the entire assembly 370 may be heated or locally heated, and the heating temperature may be 150 ° C. or higher. Further, the heating temperature may be a temperature lower than the lower one of the softening point of the first glass substrate 310 and the softening point of the second glass substrate 320.

  Next, using the support release member provided in the vacuum chamber, the maintenance of the open space 329 by the support member 372 is released. That is, the support member 372 is in a state in which the support function is lost by the support release member. As a result, the second glass substrate 320 falls on the first glass substrate 310. Thereby, the bonding layer 356 comes into contact with the second glass substrate 320 over the entire circumference. As a result, the open space 329 of the assembly 370 becomes a sealed space whose periphery is covered with the bonding layer 356.

  FIG. 7 shows a state in which the support function by the support member 372 is lost by the support release member provided in the vacuum chamber.

  As shown in FIG. 7, in this example, the support release member is a rod member 389 provided at the upper portion of the vacuum chamber. The rod member 389 can extend toward the support member 372.

  When the support of the second glass substrate 320 by the support member 372 is released, the rod member 389 is lowered from the upper part of the vacuum chamber. As a result, the tip of the rod member 389 comes into contact with the inclined surface 378 of the support member 372.

  When the inclined surface 378 of the support member 372 receives a pressing pressure by the tip of the rod member 389, a force that moves in the horizontal direction (the direction of the arrow F2 in the figure) is generated in the support member 372. Accordingly, the support member 372 moves in a direction away from the second glass substrate 320.

  Here, when the support member 372 moves more than a certain distance, the support portion 376 of the support member 372 can no longer support the second glass substrate 320. Therefore, the support of the second glass substrate 320 by the support member 372 is released. As a result, the second glass substrate 320 falls on the first glass substrate 310.

  As a result, as shown in FIG. 7, the open space 329 of the assembly 370 is lost, and a sealed space 330 is formed between the first glass substrate 310 and the second glass substrate 320.

  On the other hand, the bonding layer 356 in the assembly 370 is melted and softened by heating in the vacuum chamber. Therefore, when the bonding layer 356 of the first glass substrate 310 is in contact with the second glass substrate 320 over the entire circumference, the bonding layer 356 causes the first glass substrate 310 and the second glass substrate 320 to Are joined to form a joined body 390.

  Here, the inside of the vacuum chamber is in a reduced pressure environment, and therefore, the open space 329 is already in a reduced pressure state immediately before the second glass substrate 320 falls. Therefore, after the second glass substrate 320 falls, the sealed space 330 formed between the glass substrates 310 and 320 is in a reduced pressure state.

  Note that, after the support by the support member 372 is released by the function of the support release member (that is, after the second glass substrate 320 falls on the first glass substrate 310), the bonded body 390 needs to be Accordingly, a pressing pressure may be applied from the second glass substrate 320 side. Accordingly, the bonding layer 356 is uniformly distributed over the periphery of the bonded body 390, and better bonding can be obtained between the first glass substrate 310 and the second glass substrate 320.

(Step S140)
Next, the bonded body 390, that is, the vacuum multilayer glass is discharged from the vacuum chamber by the transport table 380. Thereby, the temperature of the bonded body 390 is decreased. Note that the temperature of the bonded body 390 may be lowered in a vacuum chamber.

  Through the steps as described above, for example, the vacuum multilayer glass 100 as shown in FIG. 1 can be manufactured.

  In such a first manufacturing method, the plurality of vacuum double-glazed glasses 100 can be continuously manufactured by the “flow method”. For this reason, the productivity of the vacuum double-glazed glass 100 is improved.

  Further, in such a first manufacturing method, a simple support releasing member installed on the vacuum chamber side, such as the rod member 389, is used without using a complicated drive system, and the first manufacturing method by the support member 372 is used. The support of the second glass substrate 320 can be released. For this reason, the structure of manufacturing equipment can be simplified.

  In the first manufacturing method, a support member that requires components that cause scattering, such as oil, is not used. Therefore, the bonded body 390 can be formed in a clean vacuum environment without contaminating the inside of the vacuum chamber.

(About another configuration of the seal member)
In the above description, the frame-shaped joining layer 155 as shown in FIG. 1 is assumed as the vacuum double-glazed glass sealing member, and the manufacturing method according to the embodiment of the present invention has been described.

  However, the configuration of the seal member is not limited to this. For example, the seal structure may be composed of a metal member and first and second bonding layers. Hereinafter, such a sealing structure will be briefly described with reference to FIG.

  FIG. 8 shows a schematic partial cross-sectional view of another sealing member that can be applied to a vacuum double-glazed glass.

  As shown in FIG. 8, this vacuum double-glazed glass 600 includes a first glass substrate 610, a second glass substrate 620, a sealed space 630 formed between both glass substrates 610 and 620, and the sealed glass And a seal member 650 surrounding the space 630.

  The seal member 650 is configured by stacking a first bonding layer 665, a metal member 658, and a second bonding layer 667 in this order.

  The first bonding layer 665 is installed in a frame shape on the first surface 612 side of the first glass substrate 610 over the periphery of the first glass substrate 610. Similarly, the second bonding layer 667 is provided in a frame shape around the second glass substrate 620 on the third surface 622 side of the second glass substrate 620.

  The metal member 658 has a first surface 661 and a second surface 662, and has a frame shape. The first surface 661 of the metal member 658 is at least partially bonded to the first bonding layer 665, and the second surface 662 of the metal member 658 is at least partially bonded to the second bonding layer 667. Has been.

  Here, although it is not clear from FIG. 8, the first surface 661 of the metal member 658 is not coupled to other members at a portion other than the coupling portion coupled to the first bonding layer 665. The second surface 662 of the metal member 658 is not bonded to another member at a place other than the bonding portion bonded to the second bonding layer 667.

  In the example of FIG. 8, the metal member 658 has a “step” shape with a contour that is linearly bent when viewed in cross section. However, the shape of the metal member 658 is not particularly limited. For example, the metal member 558 may have a curved shape when viewed in cross section, or a contour configured by a combination of a straight line and a curved line. Alternatively, the metal member 658 may have a substantially flat shape when viewed in cross section.

  Further, in the example of FIG. 8, when the vacuum double-glazed glass 600 is viewed from above (thickness direction: Z direction in FIG. 8), the first bonding layer 665 is installed at a position different from the second bonding layer 667. It's off. However, this is not always necessary, and the first bonding layer 665 may partially or entirely overlap with the second bonding layer 667 when viewed from the Z direction in FIG.

  The vacuum multilayer glass sealing member 650 may have such a configuration.

  The vacuum double-glazed glass 600 having such a sealing member 650 is basically the same by performing the steps shown in FIG. 2 for manufacturing the vacuum double-glazed glass 100 shown in FIG. Can be manufactured.

  For example, in the above-described step S110, first, the first glass substrate 610 in which the first bonding layer 665 is disposed on the first surface 612 and the second bonding layer 667 are disposed on the third surface 622. The prepared second glass substrate 620 is prepared. In addition, a frame-shaped metal member 658 is disposed over the first bonding layer 656 of the first glass substrate 610.

  Next, a support member is arranged so that an open space is formed between the glass substrates 610 and 620, thereby constituting an assembly. Thereafter, the vacuum double-glazed glass 600 having the sealing member 650 as shown in FIG. 8 can be manufactured by performing the above-described steps S120 to S140.

  In the above description, the rod member 389 that can be expanded and contracted in the vertical direction is given as an example of the support release member, and the support member 372 supports the second glass substrate 320 by the pressing force from above the rod member 389. Explained how to cancel.

  However, the method for releasing the support of the second glass substrate 320 of the support member 372 is not limited to this. For example, instead of the rod member 389 that can be expanded and contracted in the vertical direction, a rod member that can be expanded and contracted in the horizontal (horizontal) direction along the both glass substrates 610 and 620 is used. Support may be released. In this case, the support member is configured to have a slope that contacts the rod member on the side surface of the base.

  Alternatively, another configuration may be used as a combination of the support member and the support release member.

  9 and 10 schematically show an example of another combination of the support member and the support release member.

  FIG. 9 schematically shows a cross section of another assembly having a support member different from the example of FIG. FIG. 10 schematically shows a state where the support function by the support member is lost in this other assembly.

  As shown in FIG. 9, the assembly 470 includes a first glass substrate 410, a second glass substrate 420, and a support member 472.

  The first glass substrate 410 has a first surface 412 and a second surface 414, and the second glass substrate 420 has a third surface 422 and a fourth surface 424. A bonding layer 456 is formed on the first surface 412 of the first glass substrate 410.

  The support member 472 includes a base portion 474 and a support portion 476 extending in the horizontal direction from the side surface of the base portion 474. The support portion 476 has a rotation shaft 477 that can rotate within the XZ plane when receiving a predetermined load from above. The rotation shaft 477 extends in a direction (Y direction) perpendicular to the paper surface of FIG.

  The support member 472 is disposed so that an open space 429 is formed between the glass substrates 410 and 420. More specifically, the support member 472 supports the second glass substrate 420 on the third surface 422 by the support portion 476, whereby the second glass substrate 420 is supported by the first glass substrate. From 410, the state can be "floated".

  Note that the rotation shaft 477 of the support member 472 is set so that the support portion 476 does not rotate about the weight of the second glass substrate 420.

  In such an assembly 470, when releasing the support of the second glass substrate 420 by the support member 472, the assembly 470 is placed on the transfer table 480 and the assembly 470 is transferred into the vacuum chamber. To do.

  As shown in FIG. 10, a rod member 489 is provided as a support release member at the top of the vacuum chamber. The rod member 489 can extend toward the support portion 476 of the support member 472.

  When releasing the support of the second glass substrate 420 by the support member 472, the rod member 489 descends from the upper part of the vacuum chamber. Thereby, the tip of the rod member 489 comes into contact with the support portion 476 of the support member 472.

  When the support portion 476 of the support member 472 receives a pressing force by the tip of the rod member 489, the support portion 476 rotates downward about the rotation shaft 477 (see arrow F3).

  Here, when the support portion 476 is rotated by a certain angle or more, the support portion 476 can no longer support the second glass substrate 420. Therefore, the support of the second glass substrate 420 by the support member 472 is released. As a result, the second glass substrate 420 falls on the first glass substrate 410. In the drawing, the second glass substrate 420 is supported with a large inclination. However, this is exaggerated for the sake of explanation, and the second glass substrate 420 is actually the first glass. When superposed on the substrate 410, it is dropped from a height that does not cause misalignment or damage.

  As a result, as shown in FIG. 10, the open space 429 of the assembly 470 is lost, and a sealed space 430 can be formed between the first glass substrate 410 and the second glass substrate 420.

  FIG. 11 and FIG. 12 schematically show an example of still another combination of a support member and a support release member.

  FIG. 11 schematically shows a cross-section of still another assembly having a support member different from the examples of FIGS. 4 and 9. FIG. 12 schematically shows a state where the support function by the support member is lost in this assembly. FIG. 12 is a schematic top view of the assembly, but some members are omitted for clarity.

  As shown in FIG. 11, the assembly 570 includes a first glass substrate 510, a second glass substrate 520, and a support member 572.

  The first glass substrate 510 has a first surface 512 and a second surface 514, and the second glass substrate 520 has a third surface 522 and a fourth surface 524. A bonding layer 556 is formed on the first surface 512 of the first glass substrate 510.

  The support member 572 includes a base portion 574 and a support portion 576 extending in the horizontal direction from the side surface of the base portion 474. The support portion 576 has a rotation shaft 577 that can rotate within the XY plane (a plane parallel to the conveyance direction of the assembly 570) when receiving a predetermined load from the horizontal direction. The rotating shaft 577 extends in the Z direction in FIG. 11 and therefore coincides with the extending direction of the base 574.

  The support member 572 is disposed so that an open space 529 is formed between the glass substrates 510 and 520. More specifically, the support member 572 supports the second glass substrate 520 on the third surface 522 by the support portion 576, whereby the second glass substrate 520 is supported by the first glass substrate. From 510, the state can be "floated".

  In such an assembly 570, when the support of the second glass substrate 520 by the support member 572 is released, the assembly 570 is placed on the transfer table 580, and the assembly 570 is transferred into the vacuum chamber. To do.

  As shown in the upper diagram of FIG. 12, a rod member 589 is provided as a support release member at the upper portion of the vacuum chamber. The rod member 589 extends downward from the upper part of the vacuum chamber. The tip end of the rod member 589 does not reach the transport table 580. The rod member 589 has a fixed position and is non-movable.

  In the vacuum chamber, the assembly 570 on the carrier 580 advances in the direction of arrow F4 (Y direction) in FIG.

  Here, when the assembly 570 is transported to the installation position of the rod member 589 by the transport base 580, the support portion 576 of the support member 572 comes into contact with the rod member 589. However, the carrier 580 causes the assembly 570 to further advance in the direction of the arrow F4. As a result, as shown in the lower diagram of FIG. 12, the support portion 576 rotates around the rotation shaft 577 in the direction of the arrow F5 by the force from the rod member 589.

  As a result, the support of the second glass substrate 520 by the support member 572 is released, and the second glass substrate 520 falls on the first glass substrate 510. Note that the second glass substrate 520 is supported with a large inclination in the drawing, but this is exaggerated for the sake of explanation. Actually, the second glass substrate 520 is the first glass. When superposed on the substrate 510, it is dropped from a height that does not cause misalignment or damage.

  As a result, the open space 529 of the assembly 570 is lost, and a sealed space can be formed between the first glass substrate 510 and the second glass substrate 520.

  The example of the combination of the support member that can be used in the assembly and the support release member installed in the vacuum chamber has been described above. However, it will be apparent to those skilled in the art that the above combination is merely an example, and that other combinations may be applied as the combination of the support member and the support release member.

  That is, what is important in the present invention is that the open space formed by the support member included in the assembly is changed to a sealed space in the vacuum chamber by the support release member provided in the vacuum chamber. It should be noted that the combination of the support member and the support release member is not particularly limited as long as this is satisfied.

  INDUSTRIAL APPLICABILITY The present invention can be used for vacuum double glazing and the like used for building window glass and the like.

DESCRIPTION OF SYMBOLS 100 Vacuum multilayer glass 110 1st glass substrate 112 1st surface 114 2nd surface 120 2nd glass substrate 122 3rd surface 124 4th surface 130 Sealed space 150 Sealing member 155 Bonding layer 310 1st Glass substrate 312 First surface 314 Second surface 316a Side 320 Second glass substrate 322 Third surface 324 Fourth surface 329 Open space 330 Sealed space 356 Bonding layer 370 Assembly 370a Assembly 372 Support member 372- DESCRIPTION OF SYMBOLS 1, 372-2 Support member 374 Base part 376 Support part 378 Slope 380 Carriage 389 Rod member 390 Joint body 410 1st glass substrate 412 1st surface 414 2nd surface 420 2nd glass substrate 422 3rd surface 424 Fourth surface 429 Open space 430 Sealed space 456 Contact Layer 470 Assembly 472 Support member 474 Base portion 476 Support portion 477 Rotating shaft 480 Transport base 489 Rod member 510 First glass substrate 512 First surface 514 Second surface 520 Second glass substrate 522 Third surface 524 Second 4 surface 529 open space 556 bonding layer 570 assembly 572 support member 574 base portion 576 support portion 577 rotating shaft 580 carrier 589 rod member 600 vacuum double-glazed glass 610 first glass substrate 612 first surface 620 second glass Substrate 622 Third surface 630 Sealed space 650 Seal member 658 Metal member 661 Metal member first surface 662 Metal member second surface 665 First bonding layer 667 Second bonding layer

Claims (9)

A method for producing a vacuum double-glazed glass comprising a reduced-pressure sealed space between a first glass substrate and a second glass substrate facing each other,
(A) A step of placing an assembly having a bonding layer and an open space between a first glass substrate and a second glass substrate on a transport table, wherein the bonding layer includes the first glass substrate and the second glass substrate. And / or arranged in a frame shape on the second glass substrate, the open space being maintained by a support member;
(B) transporting the assembly into a vacuum chamber under a vacuum environment in which a support release member is installed by the transport table;
(C) The assembly is heated in the vacuum chamber, the maintenance of the open space by the support member is released by using the support release member, and the bonding layer is the first and second glass substrates. A closed space surrounded by the bonding layer is formed between the first glass substrate and the second glass substrate by contacting with the first glass substrate; and
(D) discharging the assembly from the vacuum chamber by the transfer table;
A method for producing a vacuum double-glazed glass, comprising: In the assembly, the second glass substrate is disposed above the first glass substrate,
The support member has a support portion that supports the second glass substrate and a base portion on which the support portion is installed,
In the step (c), the support releasing member presses the base portion, and the support portion slides away from the second glass substrate, whereby the second glass substrate falls, and the opening is released. The method for producing a vacuum double-glazed glass according to claim 1, wherein the maintenance of the space is released.   3. The method for producing a vacuum multilayer glass according to claim 2, wherein the support member has an inclined surface formed thereon, and in the step (c), the support releasing member presses the inclined surface. In the assembly, the second glass substrate is disposed above the first glass substrate,
The support member includes a support portion that supports the second glass substrate and a base portion that allows the support portion to rotate,
In the step (c), the support release member comes into contact with the support portion, and the support portion rotates, whereby the second glass substrate falls, and the maintenance of the open space is released. The manufacturing method of the vacuum double-glazed glass of 1.   The method for manufacturing a vacuum double-glazed glass according to claim 1, wherein the support release member is attached to an upper portion of the vacuum chamber. The method for producing a vacuum multi-layer glass according to any one of claims 1 to 5, wherein the pressure in the vacuum chamber is in a range of 1 x ^10-5 Pa to 10 Pa.   The vacuum according to any one of claims 1 to 6, wherein the temperature in the vacuum chamber is 150 ° C or higher, and is a temperature lower than the lower softening point of the first and second glass substrates. A method for producing a multilayer glass.   The method for producing a vacuum double-layer glass according to any one of claims 1 to 7, wherein the bonding layer includes a glass solidified layer. In the step (a), the assembly further includes a frame-shaped second bonding layer and a frame-shaped metal member between the first and second glass substrates, and the bonding layer includes: , Disposed on the first glass substrate, the second bonding layer is disposed on the second glass substrate, and the metal member is disposed between the bonding layer and the second bonding layer,
In the step (c), the sealed space surrounded by the bonding layer, the metal member, and the second bonding layer is formed between the first glass substrate and the second glass substrate. The manufacturing method of the vacuum multilayer glass as described in any one of Claim 1 thru | or 8.

Images