JPH11247539A - Vacuum insulating glass manufacturing equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve the productivity of vacuum laminated glass and the yield. SOLUTION: Instead of disposing the spacer directly on the glass plate, a magnetic material spacer 19 is arranged on a moving table 21 and the moving table 21 is moved so that the magnetic material spacer 19 on the moving table 21 has a preferable posture. Then, the magnet 18 provided on the plate collecting device 17 is attached to the lower surface of the glass plate 5 attracted to the plate collecting device 17 by suction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a vacuum double-glazed glass having spacers arranged thereon, and more particularly, to a series of steps from a step of arranging spacers of a magnetic material to a step of laminating the spacers between two glass plates. The present invention relates to a vacuum double glazing apparatus for performing a process.

[0002]

2. Description of the Related Art A vacuum double glazing is produced by arranging a number of spacers between two glass plates in an aligned state and sealing a peripheral portion thereof. Has the effect of maintaining the gap so that the glass plate is not stressed by bending when the intermediate layer is vacuum-sucked. The vacuum double glazing as described above is excellent in heat insulation and sound insulation, and can prevent fogging of the glass plate.

FIGS. 13 to 16 are schematic views showing an example of a manufacturing process which can be considered as a method of arranging a spacer between two glass plates in a vacuum insulating glass manufacturing apparatus.

[0004] In FIGS. 13 to 16, reference numeral 1 denotes a conveyor 2,
The conveyors 2, 3 and 4 receive the glass plate 5 on the upper surface and transport the glass plate 5 from the upstream side to the downstream side as indicated by arrows. , 3, 4 are operated synchronously or individually. Further, a plate collecting device 7 provided with an adsorber 6 of a suction type on an upper portion of the conveyor 3 and capable of adsorbing the glass plate 5 on a lower surface is provided so as to be able to move up and down.

Further, at an upper position on the upstream side of the conveying line 1 with respect to the plate collecting device 7, a spacer arranging device 9 for supplying the spacers 8 on the glass plate 5 carried in by the conveyor 2 in an aligned state. Is provided.

The spacer arranging device 9 is formed by, for example, a press. For example, a metal plate having a thickness of about 0.2 mm is used to form a disk having a diameter of about 0.6 mm and a metal plate having a thickness of about 0.2 mm. The metal spacers 8 are arranged in an aligned state on the glass plate 5 conveyed to the lower part by punching at intervals.

FIG. 13 shows an initial state, in which the first glass plate 5 conveyed on the conveyor 3 is adsorbed to the lower surface of the adsorber 6 by the lowering of the plate collecting device 7 and the suction operation of the adsorber 6. After that, the state where the plate collecting device 7 is raised is shown. At this time, the second glass plate 5 'has been carried onto the conveyor 2.

FIG. 14 shows a second example of the structure of the
The state in which the spacer 8 is arranged on the glass plate 5 'of FIG.

FIG. 15 shows the structure of the spacer 8 as shown in FIG.
Transports the second glass plate 5 ′ disposed on the upper surface to the position of the conveyor 3, lowers the plate collecting device 7, moves the first glass plate 5 onto the spacer 8, and immediately after collecting the layers, confirms the stacking. This shows a state in which the adsorption by the adsorber 6 of the plate device 7 is released, the first glass plate 5 is placed on the spacer 8, and then the plate collecting device 7 is raised. The laminated glass body 10 in which the spacer 8 is arranged between the plate 5 and the second glass plate 5 'is formed.

FIG. 16 shows a state in which the laminated glass body 10 in which the spacer 8 is disposed between the first glass plate 5 and the second glass plate 5 'is carried out onto the conveyor 4, and a new first glass plate is produced. 5
Is carried on the conveyor 3 and the first glass plate 5 is being attracted by the plate collecting device 7 as shown in FIG. 13 and the second glass plate 5 carried on the conveyor 2 14 shows a state in which the placement of the spacers 8 has been started by the spacer placement device 9 as in FIG. The first glass plate 5 has a laminated glass body 10 in a later step.
Is formed, and then a suction port 11 is formed for sucking the intermediate layer on which the spacers 8 are disposed to make a vacuum.

It is known that in the production of vacuum double glazing, a number of spacers must be arranged between two glass plates. The number of spacers is, for example, 15 mm
When trying to arrange at pitch, the total number is 4,100 /
m ² or more. Therefore, from the viewpoint of shortening the time required for arranging the spacers and improving the productivity, after arranging the spacers on one glass plate, the arranging of the spacers on the next glass plate is started immediately. That would be ideal.

[0012]

However, in the method shown in FIGS. 13 to 16, even if the laminated glass body 10 is formed on the conveyor 4 as shown in FIG. There is a problem that the placement of the spacer 8 on the 5 'cannot be started immediately. The reason is that in this manufacturing process, the two glass plates 5 and 5 ′ are sequentially put into the transport line 1. It is located at the bottom of the device 9. For this reason, the first lower part of the spacer placement device 9
Unless the glass plate 5 is carried into the conveyor 3 below the plate collecting device 7 and the second glass plate 5 ′ is carried into the lower portion of the spacer placing device 9, the next spacer by the spacer placing device 9 is used. 8 could not be started.

That is, it is difficult to shorten the time required for disposing the spacers 8 and improve the productivity in the methods shown in FIGS.

As a method for solving this problem, a facility as shown in FIG. 17 can be considered. FIG. 17 shows a plan view of the equipment.

In the method shown in FIG. 17, a carry-in conveyor 12 is further provided upstream of the conveyor 2, and
A spacer arranging device 9 is provided in an upper portion at a downstream side of the device. A side conveyor 13 is provided in parallel to the side of the conveyor 2, and the conveyor 2 can convey the glass plate 5 to the downstream side or to the side conveyor 13. .

Further, a delivery conveyor 14 is provided at a downstream end of the side conveyor 13, and moves between an upper portion of the delivery conveyor 14 and an upper portion of the conveyor 3, for example, along a rail 15. There is provided a movable plate collecting device 16 capable of moving up and down.

In the method shown in FIG. 17, after the first glass plate 5 conveyed from the conveyor 2 to the side conveyor 13 is carried into the transfer conveyor 14, the first glass plate 5 is adsorbed by the movable plate collecting device 16, and is further moved. It is moved to the upper position of the conveyor 3 by the traveling of the plate collecting device 16 and stands by.

On the second glass plate 5 'carried into the lower part of the spacer arranging device 9 by the conveyor 2, the spacer 8 is arranged by the spacer arranging device 9 as shown in FIG. Is completed, the second glass plate 5 ′ is conveyed onto the conveyor 3, and then the first glass plate 5 is placed on the spacer 8 by the lowering of the movable plater 16, whereby the laminated glass is placed. The body 10 is formed, and the formed laminated glass body 10 is carried out to the conveyor 4. The movable plate collecting device 16 with the first glass plate 5 placed on the spacer 8 immediately rises, and the transfer conveyor 1
4, the next first glass plate 5 is sucked, and then moved again to the upper position of the conveyor 3 to be on standby.

According to the method of FIG. 17, the second glass plate 5 'on which the spacers 8 are arranged by the spacer arranging device 9 is provided.
Is immediately discharged onto the conveyor 4, and subsequently, the next second glass plate 5 ′ is carried into the lower part of the spacer arrangement device 9,
The spacer 8 can be arranged on the next second glass plate 5 '.

In this way, the waiting time for the spacer arrangement in the method shown in FIGS. 13 to 16 can be eliminated.

However, in the method shown in FIG. 17, the first glass sheet 5 is transferred to the side conveyor 13 and the transfer conveyor 14.
In addition, there is a problem that the equipment cost is increased because of the configuration in which the detour is performed by the movable plate collecting device 16. Further, the first glass plate 5 carried in from the side conveyor 13 onto the delivery conveyor 14 is sucked by the movable plate collecting device 16, the movable plate collecting device 16 is moved, and further lowered onto the conveyor 4. In order to perform the operation of placing the spacer 8 on the spacer 8 by using the spacer, the operation takes a long time, and the time required for this operation is longer than the time required for arranging the spacer 8 by the spacer arranging device 9. Again, there is a problem that workability is reduced.

Further, as shown in FIGS. 13 to 16 and 17, as long as the spacers 8 are arranged directly on the second glass plate 5 ', there are the following problems. That is, when metal spacers are directly disposed on a glass plate, the number of metal spacers to be disposed on one glass plate is assumed to be 4,100 / m ² , and even one of these is not preferable, for example, the surface of the glass plate The spacers are arranged with the surface of the spacer, that is, a flat surface, standing, and if they are laminated, the glass plate is damaged. 1000 per day
If a vacuum multi-layer glass of 1 × ² m ² is to be produced, the number of spacers to be arranged will be 4.1 million. Assuming the actual production volume, the number of spacers must be several times or more. If stable production is taken into consideration, production with equipment directly arranged on a glass plate is extremely difficult, and there is a possibility that the product yield will be significantly reduced.

Therefore, even with the method shown in FIGS. 13 to 16 or the improvement shown in FIG. 17 corresponding thereto, it is possible to avoid the problem that the productivity cannot be improved and the yield cannot be expected. Could not.

The present invention has been made to solve the above-mentioned problems. Instead of disposing the spacer directly on the glass plate, the spacer is disposed on the moving table, and after the moving table is moved, the moving table is moved. An object of the present invention is to improve the productivity of a vacuum laminated glass and the yield by arranging a spacer on a table on a lower surface of a glass plate in a preferable posture.

[0025]

SUMMARY OF THE INVENTION The present invention relates to an apparatus for producing a double-glazed double glass in which a spacer is disposed in an intermediate layer evacuated to a predetermined degree of vacuum and the periphery thereof is sealed. And lifts the first glass plate by adsorbing the upper surface of the first glass plate conveyed on the conveyance line,
A plate collecting device capable of placing the lifted first glass plate on a second glass plate transferred on a transfer line, and a magnetic material disposed at an upper part of the transfer line upstream of the plate collecting device. A spacer arranging device capable of supplying a spacer, and a magnetic material spacer supplied from the spacer arranging device can be aligned at a predetermined position on the upper surface and moved between a lower portion of the spacer arranging device and a lower portion of the plate collecting device. A vacuum table, comprising: a movable table capable of performing the above operation; and a magnet arranged in the plate collecting apparatus so that the magnetic material spacers arranged on the movable table can be attracted to the lower surface of the first glass plate. The present invention relates to a double glazing manufacturing apparatus.

According to the present invention, when the sheet collecting apparatus is lowered to place the first glass sheet on the second glass sheet and form one laminated glass body, the next laminated glass body is formed. The arrangement of the magnetic material spacers for molding can be completed, so that the magnetic material spacers can be immediately adsorbed to the lower surface of the next first glass plate with almost no waiting time. Therefore, the arrangement time of the magnetic material spacers required for molding one laminated glass body can be reduced, and the productivity can be greatly improved. Further, since a complicated facility configuration is not required, cost can be reduced.

Further, a donut-shaped permanent magnet or a magnet made of a conductive wire is provided in the plate collecting apparatus so that the magnetic material spacer does not stand on the lower surface of the first glass plate and is parallel to the lower surface of the first glass plate. When the first glass plate is placed on the second glass plate to form a laminated glass body, the magnetic material spacer can be securely attached to the first glass plate. In addition, by being held in a state of being laid in parallel with the second glass plate, the problem of damaging the glass plate does not occur, and the yield can be improved.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of the apparatus of the present invention will be described with reference to the drawings. An example of a series of manufacturing steps by the apparatus of the present invention is schematically shown in FIGS. In addition, FIG.
The same components as those in FIGS. 3 to 16 are denoted by the same reference numerals to avoid duplication of description.

As shown in FIGS. 1 to 6, above the conveyor 3 of the transport line 1, a plate collecting device 17 having an adsorber 6 is provided.
Is provided. Further, the plate collecting device 17 is provided with a magnet 18 as described later, and a magnetic material spacer 19 formed of a magnetic material is used as the spacer.

Further, in the lower part of the spacer arrangement device 9,
For example, a moving table 21 is provided which is movable along the rail 20 with the plate collecting device 17.

Next, the magnet 1 provided in the plate collecting device 17 will be described.
8 will be described.

For example, when a strip 23 of a magnetic material is attracted by using a disk-shaped permanent magnet 22 as shown in FIG.
It is known that the strip 23 is attracted while standing against the surface of the permanent magnet 22. The disk-shaped permanent magnet 22
The lines of magnetic force 24 are concentrated in the central portion from all directions and the magnetic force density is high, and the lines of magnetic force 24 at the center stand vertically in relation to the surface of the permanent magnet 22. The piece 23 has a magnetic field line 24 at the center of the permanent magnet 22.
It is easy to be adsorbed while standing along. The same is true even when the strips 23 are disc-shaped.

On the other hand, when the donut-shaped permanent magnet 25 is used as shown in FIG. 8, when the small piece 23 is attracted, the small piece 23 stands vertically with respect to the surface of the permanent magnet 25. It was found that it was not adsorbed. Since the donut-shaped permanent magnet 25 has a space at the center, the strength of the magnetic force is dispersed in the circumferential direction, and the magnetic force lines 24 do not concentrate from the entire circumferential direction. It was found that when the small piece 23 was attracted, the small piece 23 was inclined along the line of magnetic force 24, that is, was attracted so as to approach a state parallel to the surface of the permanent magnet 25.

Therefore, the donut-shaped permanent magnet 2
9 is arranged on the lower surface of the plate collecting device 17 as shown in FIGS.
When the magnetic material spacers 19 are not attracted to the lower surface of the glass plate 5 in a standing state, and when the magnetic material spacers 19 are attracted to each of the permanent magnets 25 at four locations on the outer periphery as shown in FIG. It turned out that the position of the spacer 19 did not move.

FIG. 11 shows another example of the magnet 18. The magnet 18 shown in FIG. 11 is provided inside the vicinity of the lower surface of the plate collecting device 17 in a direction parallel to the lower surface of the plate collecting device 17. The figure shows a case in which an extended conductive line 26 is provided.

A direct current is applied to the conductive wire 26 in a direction from the front to the back of the drawing. As a result, a magnetic field is generated around the conductive wire 26, and an arrow 22
The magnetic material spacer 19 receives the force in the direction of the combined vector direction 22c of the arrows 22a and 22b by the application of the attractive force indicated by a and the force of the tangential magnetic field indicated by the arrow 22b. Will not stand.

As the magnetic material spacer 19, a general magnetic material can be used, a material obtained by mixing a ferromagnetic material powder with a non-magnetic material, a stainless material having a nickel-rich magnetic property, or the like can be used. Can be used.

The operation of the apparatus shown in FIGS. 1 to 6 will be described below.

FIG. 1 shows the initial state, and the conveyor 3
The state in which the first glass plate 5 conveyed above is adsorbed on the lower surface of the adsorber 6 by the lowering of the plate collecting device 17 and the suction operation of the adsorber 6, and then the plate collecting device 17 is raised. I have. At this time, the second glass plate 5 'has been carried onto the conveyor 2.

FIG. 2 shows a state where the moving table 21 is positioned below the spacer arranging device 9 and the magnetic material spacers 19 are arranged on the upper surface of the moving table 21 by the spacer arranging device 9. The moving table 21 moves downstream along the rails 20 to receive the supply of the magnetic material spacers 19 from the spacer arranging device 9 and to arrange the required number of magnetic material spacers 19 on the upper surface thereof in an aligned state. it can. The embodiment of the spacer arrangement device 9 is appropriately selected as long as the magnetic material spacers 19 can be supplied on the upper surface of the moving table 21 in an aligned state.

FIG. 3 shows a moving table 21 on which a magnetic material spacer 19 is arranged on the upper surface as shown in FIG.
After moving along the rail 20 to the lower part of the plate 7, the plate collecting device 17 is lowered, and the magnetic material spacer 19 on the moving table 21 is moved to the lower surface of the first glass plate 5 by the magnet 18 provided in the plate collecting device 17. FIG. 3 shows a state in which it is adsorbed on and raised. During this time, the second glass plate 5 ′ is carried into the conveyor 3, and the next first glass plate 5 is carried into the conveyor 2.

When the magnetic material spacer 19 is attracted, as shown in FIGS. 10 and 11, the magnetic material spacer 19 is moved to the first position by the action of the doughnut-shaped permanent magnet 25 or the magnet 18 composed of the conductive wire 26. Instead of standing on the lower surface of the glass plate 5, the suction is performed in a state of being inclined so as to approach a direction parallel to the lower surface of the first glass plate 5.

FIG. 4 shows a state in which the moving table 21 is returned to the lower part of the spacer arranging device 9 and the magnetic material spacers 19 are arranged on the moving table 21 again by the spacer arranging device 9.

FIG. 5 shows that the plate collecting device 17 is lowered to move the first glass plate 5 onto the second glass plate 5 ′, and after the stacking is confirmed, the suction by the adsorber 6 of the plate collecting device 17 is immediately performed. In this state, the first glass plate 5 is placed on the second glass plate 5 'after being released, and then the plate collecting device 17 is lifted. The laminated glass body 10 in which the magnetic material spacer 19 is arranged between the second glass plate 5 'and the second glass plate 5' is formed.

At this time, the magnetic material spacer 1 adsorbed to the lower surface of the first glass plate 5 by the action of the magnet 18.
9 is adsorbed in a state of being inclined so as to approach in a direction parallel to the lower surface of the first glass plate 5 without standing on the lower surface of the first glass plate 5, so that the first glass plate 5 is When the magnetic material spacer 19 is placed on the glass plate 5 ', the magnetic material spacer 19 is securely held in a state of lying in parallel with the first and second glass plates 5, 5'. , 5 'is not damaged.

FIG. 6 shows a state in which the laminated glass body 10 in which the magnetic material spacers 19 are arranged between the first glass plate 5 and the second glass plate 5 'is carried out onto the conveyor 4, and at this time, A new first glass plate 5 has already been conveyed onto the conveyor 3 and is sucked by the plate collecting device 7 as shown in FIGS. 1 and 2, and the magnetic material spacer 19 on the moving table 21. Is completed, the moving table 21 can be immediately moved to the lower part of the plate collecting device 17 and the magnetic material spacer 19 on the moving table 21 can be sucked into the plate collecting device 17 as shown in FIG. .

The point of particular note in the apparatus shown in FIGS. 1 to 6 is that, as shown in FIG. 5, the plate collecting device 17 is lowered to place the first glass plate 5 on the second glass plate 5 '. Put on 1
When one laminated glass body 10 is formed, the arrangement of the magnetic material spacers 19 for forming the next laminated glass body 10 has already been completed. Therefore, the magnetic material spacer 19 can be immediately adsorbed to the lower surface of the next first glass plate 5 with almost no waiting time. FIG. 12 shows the method according to the invention and FIGS.
6 is an example of a timing chart showing a comparison of the operations of the steps shown in FIG. 6, and according to the present invention, the productivity can be increased by the time reduction H.

Therefore, according to the apparatus shown in FIGS. 1 to 6, compared with the method shown in FIGS. 13 to 16 and FIG. 17, the magnetic property required for molding one laminated glass body 10 is improved. The time for disposing the material spacers 19 can be shortened, and the productivity can be improved. Further, since a complicated facility configuration is not required, cost can be reduced.

Further, the doughnut-shaped permanent magnet 25 shown in FIGS. 8 to 10 or the magnet 18 formed by the conductive wire 26 shown in FIG.
The magnetic material spacer 19 is tilted so as to approach in a direction parallel to the lower surface of the first glass plate 5 without standing on the lower surface of the first glass plate 5 by the action of the magnet 18 on the lower surface of the glass plate 5. When the first glass plate 5 is placed on the second glass plate 5 ′ to form the laminated glass body 10, the magnetic material spacers 19 are surely attached to the first and second glass plates 5 by suction. It is sandwiched in a state of lying in parallel with the glass plates 5, 5 ', so that there is no problem that the glass plates are damaged. Therefore, the magnetic material spacer 1
By laminating 9 in an undesired direction, the possibility of damaging the first and second glass plates 5, 5 'can be greatly reduced, and the yield can be improved.

After the spacers are thus arranged,
Evacuation and sealing of the intermediate layer are performed as follows.

As shown in FIG. 18, a pair of glass plates 5,
Glass plates 5, 5 'with a minute spacer 8 interposed between 5'
Is sealed with a sealing material 44 to hold the glass plates 5 and 5 ′ in parallel to form a double-glazed glass 10 ′ having an intermediate layer 27 formed thereon. Part 28
An attached suction port 11 is provided.

The suction port 11 is provided with a cylindrical low melting point closing member 3 having a through hole 29 formed at the center thereof by solder for kiln body.
The lower end of the "0" is fitted tightly to the step 28. When the lower end of the cylindrical low melting point closing member 30 is tightly fitted to the suction port 11 of the glass plate 5 up to the step portion 28, the outer end above the low melting point closing member 30 has the surface of the glass plate 5. It has a length that slightly protrudes from it.

The solder for the kiln constituting the cylindrical low melting point closing member 30 is a low melting point metal solder (glass solder) having an improved adhesiveness to the glass plates 5, 5 'by adding an additive such as zinc. Alternatively, low melting point glass or the like can be used.

Reference numeral 31 denotes a cylindrical box whose lower part is open, an exhaust pipe 32 is connected to the side surface, and a lid 33 is fixed to the outer periphery of the upper end to cover the upper part of the box 31. ing. A hollow plunger 34 penetrates through the center of the box 31, and the plunger 34 is fixed to the upper surface of the box 31 by the guide ring 3.
5 and the cylindrical box 3 as shown by arrow 36
1 can be slid up and down along the central axis.

A metal bellows 37 is attached to the outer periphery of the lower part of the plunger 34 and the inner surface of the upper part of the box 31 to hermetically partition the inside of the box 31 and the lid 33. A heater 38 is provided inside the lower portion of the plunger 34, and a heating section 39 is provided at the lower end of the plunger 34.
Is attached.

As the heater 38, an electric heater, an ultrasonic heater, or the like is used. As the heating unit 39, a copper alloy or the like having a high thermal conductivity is used. The lower end of the heating unit 39 has a conical pressing recess 39a. Is preferred.

The plunger 34 is moved up and down by an actuator. In FIG. 18, a pressure plate 40 is horizontally fixed to the upper end of the plunger 34.
Between the upper surface of the pressing plate 40 and the inner lower surface of the lid 33, there is provided a balloon-shaped first telescopic member 41 made of heat-resistant resin or the like. A ring-shaped second elastic member 42 also made of a heat-resistant resin or the like is provided between the first elastic member 42 and the upper surface of the second elastic member 42.

First elastic body 41 and second elastic body 42
Can supply and discharge fluid such as compressed air, water, and oil. When a fluid is supplied to the first elastic body 41 and the fluid is discharged from the second elastic body 42, The first elastic body 41 expands, the second elastic body 42 contracts, and the plunger 34 descends. When the fluid is discharged from the first elastic body 41 and the fluid is supplied to the second elastic body 42, the first elastic body 41 contracts and the second elastic body 42
Expands, causing the plunger 34 to rise. Various types of actuators such as a cylinder type can be adopted as an actuator for moving the plunger 34 up and down. A packing 43 is attached to the lower end of the cylindrical box 31 described above.

Next, a process of exhausting the intermediate layer 27 between the glass plates 5 and 5 'using the apparatus shown in FIG. 18 will be described.

First, as shown in FIG. 18, the lower end of the cylindrical low-melting point closing member 30 is tightly fitted to the step 28 from above the suction port 11 formed in one glass plate 5. Then, as shown in FIG. 18, when the box 31 is put on the surface of the glass plate 5 around the low melting point closing member 30, the packing 43 is interposed at the lower end of the box 31, so that the cylindrical shape of the surface of the glass plate 5 is formed. The low melting point closing member 30 is hermetically covered with a box 31.

In this state, when a vacuum pump is connected to the exhaust pipe 32 and suction is performed, the glass plates 5 and 5 ′ pass through the inside of the box 31 and the through hole 29 of the cylindrical low melting point closing member 30.
The pressure inside the intermediate layer 27 is reduced.

When the degree of decompression inside the box 31 approaches a predetermined pressure, the heater 38 starts to be heated, and the degree of decompression inside the box 31 reaches a predetermined pressure and the inside of the intermediate layer 27 becomes a predetermined degree of vacuum. Exhausted to a state, and a heating unit 39 by a heater 38
After the temperature reaches a predetermined temperature, the fluid is supplied to the first elastic body 41, the fluid is discharged from the second elastic body 42, the plunger 34 is lowered, and slightly protrudes from the surface of the glass plate 5. The heating section 39 at the lower end of the plunger 34 is pressed against the outer end of the low melting point closing member 30.

With this operation, the heat of the heater 38 is transmitted to the outer end of the cylindrical low melting point closing member 30 via the heating section 39, and the low melting point closing member 30 starts to melt. Then, the through hole 29 at the outer end of the cylindrical low melting point closing member 30 is formed.
Is closed for melting, the outside of the cylindrical low melting point closing member 30 is welded to the suction port 11, and the intermediate layer 27 between the glass plates 5, 5 'is kept in an evacuated state.

[0064]

As described above, according to the present invention, when the sheet collecting apparatus is lowered to place the first glass sheet on the second glass sheet and form one laminated glass body, The arrangement of the magnetic material spacers for forming the next laminated glass body can be completed, so that the magnetic material spacers are immediately adsorbed to the lower surface of the next first glass plate with almost no waiting time. be able to. Therefore, the arrangement time of the magnetic material spacers required for molding one laminated glass body can be reduced, and the productivity can be greatly improved.

Since a complicated equipment configuration is not required, the cost can be reduced.

Further, a donut-shaped permanent magnet or a magnet made of a conductive wire is provided in the plate collecting apparatus so that a magnetic material spacer does not stand on the lower surface of the first glass plate and is parallel to the lower surface of the first glass plate. When the first glass plate is placed on the second glass plate to form a laminated glass body, the magnetic material spacer can be securely attached to the first glass plate. In addition, by being held in a state of being laid in parallel with the second glass plate, the problem of damaging the glass plate does not occur, and the yield can be improved.

Further, when the first glass plate is placed on the second glass plate and laminated, the magnetic material spacer is fixed to the lower surface of the first glass plate by a magnet. And does not fluctuate even if it receives wind pressure from the glass plate on which it is mounted. As a result, the spacers can always be arranged in an aligned state.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an example of a process of the apparatus of the present invention.

FIG. 2 is a schematic side view showing an example of a process of the apparatus of the present invention.

FIG. 3 is a schematic side view showing an example of a process of the apparatus of the present invention.

FIG. 4 is a schematic side view showing an example of a process of the apparatus of the present invention.

FIG. 5 is a schematic side view showing an example of a process of the apparatus of the present invention.

FIG. 6 is a schematic side view showing an example of a process of the apparatus of the present invention.

FIG. 7 is a perspective view showing an example of a general magnet.

FIG. 8 is a perspective view showing an example of a magnet provided in the present invention.

FIG. 9 is a bottom view showing an example of a state where magnets are arranged in the plate collecting apparatus of the present invention.

FIG. 10 is a view as viewed in the direction of arrows XX in FIG. 9;

FIG. 11 is a cut-away side view showing another example of the magnet provided in the present invention.

FIG. 12 is an example of a timing chart showing a comparison between steps of a method of the present invention and a method generally assumed.

FIG. 13 is a side view showing an example of an assumed manufacturing process of the vacuum double glazing.

FIG. 14 is a side view showing an example of an assumed manufacturing process of the vacuum insulated glass.

FIG. 15 is a side view showing an example of an assumed manufacturing process of a vacuum double glazing.

FIG. 16 is a side view showing an example of an assumed manufacturing process of the vacuum double glazing.

FIG. 17 is a plan view showing an example of a method of manufacturing a vacuum insulated glass different from those shown in FIGS. 13 to 16;

FIG. 18 is a cross-sectional view illustrating an example of an apparatus that exhausts and seals an intermediate layer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveying line 5 1st glass plate 5 '2nd glass plate 9 Spacer arrangement apparatus 17 Sampler 18 Magnet 19 Magnetic material spacer 21 Moving table 25 Donut-shaped permanent magnet 26 Conductive wire

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinichi Harada 1-1-1, Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Within Asahi Glass Co., Ltd. (72) Inventor Takahiro Murakami 1150 Hazawacho, Kanagawa-ku, Yokohama-shi, Kanagawa Asahi Glass Co. Inside

Claims (3)

[Claims] 1. A vacuum double-glazing apparatus for manufacturing a double-layer glass in which spacers are arranged in an intermediate layer that has been evacuated to a predetermined degree of vacuum and the periphery of which is sealed, comprising: The upper surface of the conveyed first glass plate is sucked to lift the first glass plate, and the lifted first glass plate is placed on the second glass plate conveyed on the transfer line. And a spacer arranging device which is arranged at an upper part of the conveying line upstream of the plate arranging device to supply the magnetic material spacer, and a magnetic material spacer supplied from the spacer arranging device is positioned at a predetermined position on the upper surface. A moving table that can be aligned between the lower part of the spacer disposing device and the lower part of the plate collecting device; and a magnetic material spacer aligned on the moving table, Before it can be adsorbed on the bottom An apparatus for producing a vacuum double glazing, comprising: a magnet arranged in a plate collecting apparatus. 2. The method according to claim 1, wherein the direction of the lines of magnetic force of the magnet provided in the plate collecting apparatus is set so that the surface of the magnetic material spacer is brought close to and parallel to the direction parallel to the lower surface of the first glass plate. The apparatus according to claim 1. 3. The vacuum double glazing apparatus according to claim 1, wherein the magnet is a doughnut-shaped permanent magnet or a conductive wire.