JPH11268934A - Production of vacuum multiple glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a vacuum multiple glass by which the outer periphery of the vacuum multiple glass can be smoothly sealed without obstacle. SOLUTION: A metallic layer previously attached to the mutually facing outer peripheries of two layers of glass plates 1, 1 having distance-keeping member lying therebetween is heated and melted by an induction heating device 9, and a molten metal melted by a heater 15 is pushed into the outer periphery of intermediate layer formed between the glass plates 1, 1 while vibrating the glass plates 1, 1 by a molten metal-pushing-in apparatus 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for producing a vacuum double glazing.

[0002]

2. Description of the Related Art In vacuum double glazing, a plurality of glass plates are laminated with a gap holding member between the glass plates so that an intermediate layer having a slight gap is held between the glass plates arranged opposite to each other.
It is manufactured by sealing the peripheral edge of the laminated glass plate with a sealing member such as a metal and then exhausting the intermediate layer to a predetermined degree of vacuum.

FIG. 4 is a cross-sectional view of a peripheral edge of a glass plate of conventional vacuum insulated glass. In FIG. 4, reference numeral 1 denotes two glass plates laminated with the gap holding member 2 placed on the opposing surface, and reference numeral 3 denotes a seal made of metal or the like provided on the outer peripheral edge of the intermediate layer 4 formed between the glass plates 1 and 1. It is a stop member. Thus, in such a vacuum insulated glass, the intermediate layer 4 is evacuated so that a predetermined degree of vacuum can be maintained.

[0004]

In the vacuum double glazing shown in FIG. 4, a sealing member 3
Is provided. However, there is no disclosure at all about what means is used to seal the outer peripheral edge of the glass plates 1 and 1, and it is a problem whether or not it is possible to actually manufacture a vacuum double glazing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to enable the outer peripheral edge of a vacuum insulated glass to be smoothly and smoothly sealed using practical means.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided a method of manufacturing a vacuum double glazing by accommodating a gap holding member in an intermediate layer formed between a plurality of opposing glass plates and evacuating the intermediate layer. In the vacuum multi-layer, a metal layer is interposed on the outer peripheral edge of a glass plate facing the intermediate layer with the gap holding member housed in the intermediate layer, and the metal layer is heated and melted by a heating device. A method for producing glass is provided.

The present invention also relates to a method for manufacturing a vacuum double glazing, in which a gap holding member is housed in an intermediate layer formed between a plurality of opposing glass plates and the intermediate layer is evacuated to produce a vacuum double glazing. An object of the present invention is to provide a method for producing a vacuum double-glazed glass in which a metal heated and melted by a heating device is vibrated through a vibrating body and pushed into a peripheral edge of a layer by a molten metal pushing device.

Further, the present invention provides a method of manufacturing a vacuum double glazing, wherein a gap holding member is housed in an intermediate layer formed between a plurality of glass plates facing each other and the intermediate layer is evacuated to produce a vacuum double glazing. In a state where the gap holding member is housed in the layer, a metal layer is interposed on the outer peripheral edge of the glass plate facing through the intermediate layer, and the metal layer is heated and melted by the first heating device. Provided is a method for manufacturing a vacuum double glazing in which a metal heated by a second heating device and melted is vibrated by a molten metal pushing device through an oscillating body on an outer peripheral edge of an intermediate layer in which the layer is melted. It is. Still further, the present invention provides a method for producing a vacuum double glazing in which a preload is applied to a peripheral edge of a glass sheet from a thickness direction by a preload applying means before solidification of a molten metal.

According to the present invention, the outer peripheral edge of the glass plate can be easily and reliably sealed.

If the preload is applied to the outer peripheral edge of the glass sheet from the thickness direction by the preload applying means before the solidification of the molten metal, the gap holding member is not displaced, and the appearance of the product is improved. And the metal oxide film can be crushed, so that the sealing state is further improved.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of an apparatus for sealing the outer periphery of a glass plate for realizing the method for producing a vacuum double-glazed glass of the present invention, FIG. 2 is a side view of an induction heating apparatus used in the apparatus of FIG. FIG. 2 is a side view of a molten metal pushing device of the device used in FIG.

In FIG. 1, reference numeral 5 denotes a horizontally arranged guide rail, on which a movable platform 6 is arranged so as to be able to reciprocate along the guide rail 5. A bracket 7 is fixedly provided on the side of the movable base 6,
The bracket 7 is fixedly mounted on a drive belt 8 which is wound endlessly around a belt wheel (not shown) arranged on the front and rear end portions of the guide rail 5 in the longitudinal direction. The driving belt 8 is driven by the driving device to move the driving belt 8, and the movable base 6 can be reciprocated along the guide rail 5 via the driving belt 8. The outer peripheral edge of the glass plate 1 is sealed by moving the movable gantry 6 in the direction of arrow A.

An induction heating device 9 is installed at a position on the tip side with respect to the traveling direction a of the movable gantry 6. Thus, the induction heating device 9 is mounted on the mounting table 1 such as a turntable.
It is formed in a U-shape as viewed from the traveling direction A of the movable gantry 6 so that the outer peripheral edges of the two glass plates 1 and 1 horizontally disposed on the upper side of the movable frame 6 are sandwiched from above and below by a gap. As the heating device, a light source that emits strong heat, such as a halogen lamp, can be used in addition to the induction heating device 9.

The two glass plates 1 are arranged on a mounting table 10 in a state of being stacked on the opposing surface via a gap holding member 2.

A molten metal pushing device 11 is disposed on the movable gantry 6 so as to be located upstream of the induction gantry 9 in the traveling direction a of the movable gantry 6. That is, the bracket 12 is erected on the movable base 6 so as to be located upstream of the induction heating device 9 in the traveling direction a.
Is mounted with an ultrasonic oscillator 13 whose axis L1 extends in a direction orthogonal to the guide rail 5 when viewed in plan. At the tip of the shaft of the ultrasonic oscillator 13, an oscillator 14 having a substantially square cross section, which is capable of reciprocating vibration in a direction parallel to the axis L 1 by the ultrasonic oscillator 13, is directed toward the mounting table 10. It is connected so as to protrude. Further, a heater 15 is formed by winding a nichrome wire around the outer periphery of the oscillator 14.

Another bracket 16 erected on the movable base 6 close to the bracket 12 extends in a cantilever manner toward the mounting table 10. Then, the bracket 16
When the outer peripheral edge of the glass plates 1 and 1 is sealed, a predetermined point such as a low melting point metal is disposed between the distal end of the oscillator 14 and the outer peripheral edges of the upper and lower glass plates 1 and 1. Metal wire 1
A metal wire supply device 18 such as a reel capable of supplying the 7 is provided.

The molten metal pushing device 1 is placed on the movable base 6.
A glass plate outer peripheral edge pressing device 19 is provided so as to be located on the upstream side in the traveling direction a of the movable base 6 with respect to the movable frame 6. That is, the arm 20 protruding toward the mounting table 10 is disposed on the movable gantry 6 so as to be located on the upstream side in the traveling direction a from the molten metal pushing device 11. The vertical member 20a erected on the mounting table 10 side of the arm 20 can support the lower surface of the lower glass plate 1 supported on the mounting table 10 when the outer peripheral edges of the glass plates 1 and 1 are sealed. A lower horizontal roller 21 is provided rotatably. The axis L2 of the lower horizontal roller 21 is parallel to the axis L1 of the ultrasonic oscillator 13.

At the top of the vertical member 20a of the arm 20, a horizontal member 20b is provided so as to protrude toward the mounting table 10, and a vertical hydraulic cylinder 22 is installed on the horizontal member 20b. A bracket 24 is connected to the lower end of the piston rod 22a of the fluid pressure cylinder 22 so that the bracket 24 can be guided up and down by a guide member 23 provided on the vertical member 20a of the arm 20.

Further, the glass plate 1 is attached to the bracket 24.
An upper horizontal roller 25 is provided rotatably so as to press the upper surface of the upper glass plate 1 supported on the mounting table 10 when the outer peripheral edge is sealed. The upper horizontal roller 25 is located immediately above the lower horizontal roller 21 and is disposed in parallel with the lower horizontal roller 21.

In FIG. 2, reference numeral 26 denotes a relatively thin (about 0.01 to 0.02 mm) metal layer which is preliminarily applied or wetted on the outer peripheral edge of the glass plate 1 by known means. It is. In FIG. 3, reference numeral 27 denotes a metal wire 17.
Is molten metal injected into the intermediate layer 4 formed between the upper and lower glass plates 1 and 1 so as to seal the outer peripheral edge of the glass plates 1 and 1.

Next, the operation of the present invention will be described.

When the outer peripheral edge of the vacuum double-glazed glass is sealed, first, a metal layer 26 is pre-deposited on the outer peripheral edge surface of the glass plate 1 by a known means. Further, the lower glass plate 1 is placed on the mounting table 10 in a predetermined state so that the metal layer 26 faces the upper surface. Further, the metal layer 26 of the upper glass plate 1 is separated from the metal layer 26 of the lower glass plate 1 at a plurality of locations on the upper surface of the lower glass plate 1 through the aligned gap holding members 2.
6 so as to face it.

Next, the drive belt 8 is connected to the outer peripheral edge sealing device of the laminated glass plate 1 at one end side of the laminated glass plate 1 (on the front side in FIG. 1) with respect to the glass plate 1 and stopped. By driving, it is moved in the traveling direction A along the guide rail 5. When the movable base 6 moves while being guided by the guide rails 5 and the induction heating device 9 reaches one end of the glass plate 1 on the sealing work start side, the induction heating device 9 is activated to generate a high frequency. . For this reason,
The metal layer 26 is heated up to the melting temperature in a short time.

Next, when the movable gantry 6 moves in the advancing direction A while being guided by the guide rail 5, the molten metal pushing device 11 reaches one end of the glass plate 1 on the sealing work start side. 11 is started. In addition, the heater 15 is activated and the metal wire supply device 18 is also activated so that the tip of the oscillator 14 of the metal wire 17 and the glass plate 1
The supply to the outer peripheral edge is started.

For this reason, the metal wire 17 is heated and melted by the heater 15, and at the same time, the oscillating body 14 vibrates so as to approach and separate from the outer peripheral edge of the glass plate 1, and thereby, between the upper and lower glass plates 1, 1. It is pushed into the formed intermediate layer 4 and one side of the outer peripheral edge of the glass plates 1 and 1 is gradually sealed.

Further, when the movable base 6 moves in the advancing direction A while being guided by the guide rails 5 and the outer peripheral edge pressing device 19 of the glass plate reaches one end of the sealing operation start side of the glass plate 1, the fluid pressure cylinder 22 To lower the upper horizontal roller 25 via the piston rod 22a.

For this reason, the outer peripheral edges of the upper and lower glass plates 1, 1 are brought into contact with the upper and lower surfaces of the glass plates 1, 1.
The pre-load is applied by being pressed in the vertical direction by the lower horizontal rollers 25 and 21, and the molten metal layer 26 and the molten metal 27 are firmly and integrally fixed to the outer peripheral edges of the glass plates 1 and 1 immediately before solidification. You.

The movable frame 6 of the outer peripheral edge sealing device of the glass plate moves along the outer peripheral edge of the glass plates 1 and 1 in the traveling direction A in FIG. When it reaches one end of the work end side (the back side with respect to the paper surface of FIG. 1), the induction heating device 9 is stopped to end the heating.
When the movable gantry 6 moves in the traveling direction A and the molten metal pushing device 11 reaches one end of the glass plate 1 on the sealing work end side, the ultrasonic oscillator 13 is stopped to stop the oscillation of the oscillator 14. Then, the pushing of the molten metal 27 into the intermediate layer 4 is completed.

Further, similarly, when the outer peripheral edge pressing device 19 of the glass plate reaches one end of the glass plate 1 on the sealing end side, the upper horizontal roller 25 is raised by the fluid pressure cylinder 22, and the upper and lower horizontal rollers 25, The vertical pressing of the outer peripheral edge of the upper and lower glass plates 1 and 1 by the upper and lower layers 21 is released.

When sealing of the outer periphery of the glass plates 1 and 1 with metal is completed, the outer periphery sealing device of the glass plate is
Travels in the direction opposite to the traveling direction a and returns to the original position, and waits for the next operation. In addition, the mounting table 10 turns horizontally, and one side of the glass plate 1 that has not yet been sealed by the metal sealing member is parallel to the guide rail 5.

Then, the outer peripheral edge sealing device of the glass plate is moved again along the guide rail 5 in the traveling direction A in FIG. 1 through the movable base 6 and the outer peripheral edge of the glass plate 1 is made of metal as described above. Seal with a sealing member. Similarly, the other two sides are similarly sealed with a metal sealing member.

The four sides are sealed by a sealing member, and the intermediate layer 4 between the lower glass plates 1 and 1 is evacuated at an appropriate stage, and the evacuated portion is closed. Production is completed.

According to the embodiment of the present invention, the outer periphery of the glass plate can be easily and reliably sealed, so that the feasibility is high. The outer peripheral edges of the glass plates 1, 1 are pre-pressed by upper and lower horizontal rollers 25, 21. Therefore, since the outer peripheral edge of the glass plates 1 and 1 is slightly compressed, the gap holding member 2 disposed near the outer peripheral edge is provided.
Is not displaced (dropped off) in the intermediate layer 4,
The appearance of the product is not impaired. Further, by applying a preload, the oxide film on the surface of the metal layer 26 can be crushed, so that the sealing state is further improved.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

For example, in the embodiment of the present invention, the metal layer 26 is formed on the glass
Melts the metal layer 26, and the molten metal pushing device 1
Although the case where the molten metal 27 is pressed into the intermediate layer 4 has been described with reference to FIG. 1, the molten metal layer 26 can be directly fixedly contacted to form a metal sealing member. Also, without pre-depositing the metal layer 26 on the glass plate 1, the metal wire 17
The glass plate 1 can be sealed with the molten metal 27 obtained by melting the glass plate 1. In this case, the former does not require the molten metal pushing device 11, and the latter does not require the induction heating device 9.

Further, the metal layer 26 may not be pre-deposited on the glass plate 1, but a band-shaped metal may be interposed between the glass plates 1 and 1 as the metal layer, and the metal layer may be melted.

The outer peripheral edge pressing device 19 need not be provided if the displacement of the gap holding member 2 in the intermediate layer 4 does not pose a problem. Further, it is preferable to cut the surface of the metal layer 26 pre-deposited on the glass plate 1 to remove the oxide film. However, the cutting for removing the oxide film need not be particularly performed. Further, a synthetic resin cover may be provided on the sealing portion of the glass plate 1 so as to cover the sealing portion from outside.

As a material of the molten metal 27, for example, a material that can be melted at a temperature of about 150 to 300 ° C., for example, a normal solder containing lead as a main component, Solder.

[0040]

According to the method for producing a vacuum double glazing of the present invention, various excellent effects can be obtained as follows.

I) The outer peripheral edge of the glass plate can be easily and securely sealed, and the feasibility is high.

II) When a preload is applied to the outer peripheral edge of the glass plate by the upper and lower horizontal rollers, the position of the gap holding member does not shift, the appearance of the product is improved, and the metal oxide film is crushed. Therefore, the sealing state is further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an outer peripheral edge sealing device for a glass plate used in a method for producing a vacuum double glazing of the present invention.

FIG. 2 is a side view of an induction heating device used in the device shown in FIG.

FIG. 3 is a side view of a molten metal pushing device used in the device shown in FIG.

FIG. 4 is a cross-sectional view of an outer peripheral edge portion of a conventional vacuum double-glazed glass plate.

[Description of Signs] 1 Glass plate 2 Gap holding member 4 Intermediate layer 9 Induction heating device (Heating device) 11 Molten metal pushing device 14 Oscillator 15 Heater (Heating device) 19 Glass plate outer edge holding device (Preload applying means) 21 Lower horizontal roller (preload applying means) 25 Upper horizontal roller (preload applying means) 26 Metal layer 27 Molten metal (metal)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takahiro Murakami 1150 Hazawa-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture Inside Asahi Glass Co., Ltd. (72) Inventor Yasushi Maeda 1-1 1-1 Suehiro-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Asahi Glass Co., Ltd. (72) Inventor Naoki Okino Asahi Glass Co., Ltd. 1-1 1-1 Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa

Claims (4)

[Claims] 1. A method of manufacturing a vacuum double glazing by accommodating a gap holding member in an intermediate layer formed between a plurality of glass layers facing each other and evacuating the intermediate layer.
In a state in which the gap holding member is housed in the intermediate layer, a metal layer is interposed on the outer peripheral edge of the glass plate facing the intermediate layer, and the metal layer is heated and melted by a heating device. Manufacturing method of vacuum double glazing. 2. A method for producing a vacuum double glazing, wherein a gap holding member is housed in an intermediate layer formed between a plurality of glass plates facing each other and the intermediate layer is evacuated,
A method for producing a vacuum double glazing, characterized in that a metal heated and melted by a heating device is pushed into the outer peripheral edge of the intermediate layer while being vibrated by a molten metal pushing device via an oscillator. 3. A method for producing a vacuum double glazing, wherein a gap holding member is housed in an intermediate layer formed between a plurality of glass layers facing each other and the intermediate layer is evacuated to produce a vacuum double glazing.
In a state in which the gap holding member is housed in the intermediate layer, a metal layer is interposed on the outer peripheral edge of the glass plate facing through the intermediate layer, and the metal layer is heated and melted by the first heating device. A second layer is formed on the outer peripheral edge of the intermediate layer where the metal layer is melted.
A method for producing a vacuum double glazing, characterized in that a metal melted by heating by a heating device is pressed while being vibrated by a molten metal pressing device through an oscillator. 4. The vacuum double-glazed glass according to claim 1, wherein a preload is applied to the outer peripheral edge of the glass sheet from a thickness direction by a preload applying means before solidification of the molten metal. Production method.