CN101475304B - Back bolt type vacuum glass and manufacturing method thereof - Google Patents

Abstract

The invention relates to a back bolt type vacuum glass and a manufacturing method thereof. The back-bolt vacuum glass includes at least two layers of tempered glass. There is a vacuum layer between the tempered glass substrates. The periphery is vacuum-sealed with dark low-melting glass with infrared heat absorption characteristics, and a support is arranged in the middle. One layer of substrate glass is tempered after opening a tapered hole on the back so that it can be anchored into the back bolt for fixation; the dark low-melting point glass used around is a low-melting point glass with infrared absorption characteristics; the other layer of tempered substrate glass and the tapered hole The interlayer is sealed with a dark low-melting glass ring. The invention realizes the application of the vacuum glass on the point-connected all-glass curtain wall (joint-type all-glass curtain wall).

Description

Back bolt type vacuum glass and manufacturing method thereof

technical field

The invention relates to the technical field of vacuum glass, in particular to a bolt-back type vacuum glass and a manufacturing method for manufacturing the back-bolt type vacuum glass.

Background technique

In order to improve the performance of sound insulation and heat insulation of door and window glass, a manufacturing method of vacuum glass has been proposed in the prior art. Made for vacuum. The double-layer glass panel commonly used now is a vacuum glass panel formed by setting a vacuum layer between two glass substrates.

A variety of schemes for manufacturing vacuum glass panels have been proposed in the prior art, as described in the Chinese patent application titled "Edge Heating Method for Vacuum Glass and Vacuum Glass Made by This Method" with application number 200410029896.2. When processing vacuum glass panels, low-melting point glass is used to seal the edges of the two glass substrates. During sealing, microwaves or electric heating wires are generally used to heat the whole glass panel coated with low-melting point glass at high temperature. At high temperature, the low-melting point glass melts to seal the two glass substrates.

However, the unavoidable defects of the above-mentioned technologies are: they cannot be used for point-connected all-glass curtain walls (connected all-glass curtain walls), and cannot fully utilize the transparency of glass to realize the communication and integration of the interior and exterior spaces of buildings; if the above-mentioned vacuum Glass perforation, on the one hand, there will be air leakage, resulting in the loss of vacuum, and even the complete loss of thermal insulation and sound insulation performance; Traces affect the artistic expression of the entire building. In addition, microwaves and heating wires are difficult to heat ordinary low-melting glass. Adding microwave-absorbing materials to low-melting point glass will affect the sealing strength, flow wettability and other properties of low-melting point glass, making it difficult to process and use. Direct high-temperature heating not only heats the low-melting point glass, but also heats the entire glass substrate, which undoubtedly has a serious impact on the performance of the glass substrate, especially the de-strengthening effect of high temperature, which significantly reduces the performance of the vacuum glass panel.

Contents of the invention

The object of the present invention is to provide a back-bolt type vacuum glass and a manufacturing method for manufacturing the back-bolt type vacuum glass, so as to realize the application of the vacuum glass on a point-connected full-glass curtain wall (connected full-glass curtain wall).

The plug-type vacuum glass of the present invention includes at least two layers of tempered glass, a vacuum layer is formed between the tempered glass substrates, the periphery is vacuum-airtightly sealed with glass, and a support is arranged in the middle. It is characterized in that: one layer of substrate glass is tempered after opening a tapered hole, so as to be anchored into the back bolt for fixing; the dark low melting point glass used around is low melting point glass with infrared absorption characteristics; the surface of the support is coated with dark low melting point Glass.

Or another layer of tempered substrate glass has a through hole at the corresponding position of the tapered hole. The diameter of the through hole is not smaller than the tapered hole.

Or one layer of tempered substrate glass remains intact; the other layer of substrate glass away from the layer of tempered glass is tempered after opening a tapered hole so that it can be anchored into the back bolt to fix it; the interlayer between the other layer of tempered substrate glass and the tapered hole Seal with a ring of dark low-melting glass.

Or one layer of tempered substrate glass remains intact; the other layer of tempered substrate glass has a tapered through hole, and the diameter of the through hole facing the side of the other layer of tempered substrate glass is the largest, and the gap between the through hole and the other layer of tempered substrate glass The interlayer is vacuum-sealed with a dark low-melting glass ring, and the tapered hole is easy to anchor into the back bolt for fixation.

The manufacturing method of the above-mentioned back bolt type vacuum glass is characterized in that, comprising:

Step 1. Arranging the dark low-melting glass on the edges of the two layers of toughened glass substrates and around the tapered hole, and the supports coated with dark low-melting glass are distributed in the toughened glass substrate; The parts are placed in a vacuum chamber as a whole;

Step 2, applying infrared heat radiation on the assembly to heat the dark low-melting glass in the assembly;

Step 3. After the dark low-melting glass is heated and melted, the infrared heat radiation is weakened so that the application of infrared heat radiation is stopped, and the melted dark low-melting glass is cooled and condensed, and is sealed and fixed with the tempered glass and the tempered glass; the temperature is lower than Take it out of the vacuum chamber after 100°C.

Further, between step 1 and step 2, it also includes: heating the substrate and the sealant arranged thereon to no higher than 400°C as a whole.

Further, the step 2 may also be: applying infrared heat radiation on the assembly, heating the dark low-melting glass to no higher than 600°C to melt and seal it.

Or the manufacturing method of the above-mentioned back bolt type vacuum glass is characterized in that it includes: setting a through hole on the tempered glass substrate; setting a sealant on the side of the through hole, adjacent to the through hole; one side of the tempered glass substrate;

After at least two layers of the tempered glass substrates are sealed to form a sealing layer, the air is extracted through the through hole by using an air extraction tube;

In the process of extracting air, applying infrared heat radiation on the heating layer arranged outside the through hole to heat the sealing layer arranged at the through hole;

When the sealing layer at the through hole is heated and melted, and the required vacuum degree is reached between the tempered glass substrates, the application of infrared heat radiation is weakened and the application of infrared heat radiation is stopped, and the heating layer outside the through hole is pressed, and the melted sealing layer is cooled. Condensation seals the through hole, and the pressed heating layer forms a plane outside the condensed sealing layer.

Further, the through hole is a stepped hole, and the sealing layer and the heating layer are arranged in the steps of the stepped hole.

Further, the sealing layer is specifically dark low-melting glass.

It further includes: setting a getter between the sealed tempered glass substrates.

In order to achieve the above object, the present invention provides a back-bolt type vacuum glass, which includes at least two layers of tempered glass, a vacuum layer is formed between the tempered glass substrates, the periphery is vacuum-sealed with dark low-melting point glass, and a support is arranged in the middle; Wherein, a, the back side of said layer of substrate glass is tempered with a tapered hole, so as to be anchored into the back bolt and fixed, as shown in Figure 1; the corresponding position of the other layer of tempered substrate glass is provided with a through hole, and the diameter of the through hole is Not smaller than the tapered hole, and the interlayer between the through hole and the tapered hole is vacuum-sealed with a dark low-melting glass ring; b. The first layer of tempered substrate glass remains intact; the back of the other layer of substrate glass is tapered After the hole is tempered so that it can be anchored into the back bolt and fixed, the interlayer between the other layer of tempered substrate glass and the tapered hole is sealed with a dark low-melting glass ring, as shown in Figure 2; c, the first layer of tempered The substrate glass remains intact; there is a tapered through hole on the other layer of tempered substrate glass, and the diameter of the through hole facing the other layer of glass is the largest, and the interlayer between the through hole and the other layer of tempered substrate glass is dark low-color The melting point glass ring is vacuum-airtight, and the tapered hole is easy to anchor into the back bolt for fixing, as shown in Figure 3.

When installing, insert the back bolt into the hole on the glass, tighten the nut, squeeze the gasket of the expansion head into the expansion head, and complete the fixing of the back bolt to the glass. The quadrilateral vacuum glass panels of the point-connected curtain wall can be connected at four points, or six points if necessary; the triangular vacuum glass panels can be connected at three points. The distance between the edge of the connection hole of the vacuum glass panel and the edge of the panel should not be less than 70 mm. Point-connected curtain walls generally use four-point connections. After two adjacent four-point connection plates are replaced by a six-point connection plate, the maximum bending moment is transferred from the mid-span of the four-point connection plate to the support of the six-point connection plate, and The value is similar, the bearing capacity is not significantly improved, but the mid-span deflection can be greatly reduced, so in general, a single four-point connection vacuum glass can be used; when the deflection is too large, two adjacent four-point connection vacuum glass panels can be used Change to a six-point connection vacuum glass plate.

In order to achieve the above object, the present invention further provides a manufacturing method for manufacturing back-bolted vacuum glass, comprising:

Step 1. Arranging the dark low-melting glass on the edge of the two-layer tempered glass substrate and around the through hole, and the supports coated with the dark low-melting glass on the surface are distributed in the tempered glass substrate; the assembly The whole is placed in a vacuum chamber;

Step 2, applying infrared heat radiation on the assembly to heat the dark low-melting glass in the assembly;

Step 3. After the dark low-melting glass is heated and melted, the infrared heat radiation is weakened so that the application of infrared heat radiation is stopped, and the melted dark low-melting glass is cooled and condensed, and is sealed and fixed with the tempered glass and the tempered glass; the temperature is lower than Take it out of the vacuum chamber after 100°C.

It can be known from the above technical solutions that the present invention adopts the technical means of heating and melting dark low-melting point glass by infrared heat radiation, which overcomes the technical problem of reducing the toughening degree of tempered glass by heating the whole tempered glass during heating in the prior art. The heating effect of the present invention on the dark low-melting glass is far superior to that on the transparent tempered glass substrate, avoiding the problem that the tempering degree decreases or even disappears due to the heating of the entire tempered glass, and effectively ensures the back-bolt vacuum The performance of tempered glass in glass, and the realization method is simple and easy to control.

The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a structural schematic diagram of a specific embodiment 1 of the back-bolt type vacuum glass of the present invention;

Fig. 2 is a structural schematic diagram of a second embodiment of the back-bolt type vacuum glass of the present invention;

Fig. 3 is a structural schematic diagram of a third embodiment of the back-bolt type vacuum glass of the present invention;

Fig. 4 is the flow chart of Embodiment 1 of the specific manufacturing method of the back-bolt type vacuum glass of the present invention;

Fig. 5 is the flow chart of Embodiment 2 of the specific manufacturing method of the back-bolt type vacuum glass of the present invention;

Fig. 6 is a schematic structural view of the sealant used in the back-bolt vacuum glass of the present invention.

Detailed ways

Embodiment 1 of back-bolt type vacuum glass

Fig. 1 is a schematic structural diagram of a specific embodiment 1 of the back bolt type vacuum glass. Open a tapered hole 20 on the back of the substrate glass 10 and then temper it so that it can be anchored into the back bolt for fixing; another layer of tempered substrate glass 40 has a hole 50 at the corresponding position, and the diameter of the through hole 50 is not smaller than the diameter of the tapered hole 20 ; The interlayer 60 between the through hole 50 and the tapered hole 20 is vacuum-air-sealed with a dark low-melting-point glass ring 70; connected; a support 80 is arranged in the middle of the tempered substrate glass 10 and the tempered substrate glass 40;

Specific embodiment two of back bolt type vacuum glass

As shown in Figure 2, it is a structural schematic diagram of the second embodiment of the back-bolt type vacuum glass. The tempered substrate glass 10 remains intact; the back side of the substrate glass 40 has a tapered hole 20 and is tempered so that it can be anchored into the back bolt and fixed; if necessary, it can be tempered The interlayer 60 between the substrate glass 10 and the tapered hole 20 is vacuum-air-tightly bonded with a dark low-melting-point glass ring 70; ; A support 80 is arranged between the toughened substrate glass 10 and the tempered substrate glass 40 ;

Specific embodiment three of back bolt type vacuum glass

As shown in Figure 3, it is a structural schematic diagram of the third embodiment of the back bolt type vacuum glass, the tempered substrate glass 10 remains intact; a tapered through hole 20 is opened on the tempered substrate glass 40, and the through hole 20 faces the side of the tempered substrate glass 10 The diameter is the largest, and the interlayer 60 between the through hole 20 and the tempered substrate glass 10 is vacuum-sealed with a dark low-melting glass ring 70, and the tapered hole 20 is fixed by anchoring the back bolt. The periphery of 40 is vacuum-sealed with dark low-melting glass 70 ; a support 80 is arranged between the tempered substrate glass 10 and the tempered substrate glass 40 .

Embodiment 1 of the specific manufacturing method of the back bolt type vacuum glass

Fig. 4 is a flow chart of Embodiment 1 of the specific manufacturing method of back-bolt type vacuum glass according to the present invention. This method is suitable for sealing two layers of glass substrates in a vacuum chamber to form a vacuum glass panel. The method specifically includes the following steps:

Step 10, arrange the dark low-melting glass 70 on the edges of the tempered substrate glass 10 and the tempered substrate glass 40 and around the through hole, the support 80 coated with the dark low-melting glass 70 is placed on the toughened substrate The glass 10 and the tempered substrate glass 40 are scattered and arranged; the assembly is placed in a vacuum chamber as a whole;

Step 20, applying infrared heat radiation on the assembly to heat the dark low-melting glass 70 in the assembly;

Step 30: After the dark low-melting glass 70 is heated and melted, weaken and stop the application of infrared heat radiation, the melted dark low-melting glass 70 is cooled and condensed, and sealed with the tempered substrate glass 10 and the tempered substrate glass 40 Solid connection; take it out of the vacuum chamber when the temperature is lower than 100°C.

In this embodiment, the technical means of heating and melting the dark low-melting glass 70 with infrared heat radiation overcomes the problem of reducing the tempering degree of the tempered glass by heating the entire tempered substrate glass 10 and the tempered substrate glass 40 during heating in the prior art. technical problem. The heating effect of the present invention on the dark low-melting point glass 70 is far superior to that on the transparent tempered substrate glass 10 and the tempered substrate glass 40, and avoids the problem that the degree of tempering decreases or even disappears when the entire tempered glass is heated. The performance of the toughened glass in the back-bolt type vacuum glass is effectively guaranteed, and the realization method is simple and easy to control. During the whole process, the tempered glass substrate has only experienced a local instantaneous high temperature process not higher than 600°C, so the impact of the heating and sealing process on the performance of the glass substrate can be minimized, and the performance of the glass substrate is avoided due to de-tempering. .

On the basis of the first embodiment above, each tempered glass substrate, the support 80 and the dark low-melting glass 70 disposed thereon can be further preheated to not higher than 400° C. as a whole between step 10 and step 20 .

Example 2 of the specific manufacturing method of back-bolted vacuum glass

As shown in Figure 3, it is the flow chart of the specific embodiment 2 of the manufacturing method of the back-bolt type vacuum glass of the present invention. This embodiment is based on the above-mentioned embodiment 1, and is implemented in a non-vacuum chamber, and the following steps are further added:

Step 100, setting a through hole 41 on the tempered glass substrate 40, setting a sealant 90 outside the through hole 41 of the tempered glass substrate, and setting the sealing layer 91 adjacent to the through hole, specifically, it can be arranged around the outer surface of the through hole 41 , the heating layer 92 is arranged on the side of the sealing layer 90 away from the tempered glass substrate 40, covering the outside of the sealing layer 91; wherein, the through hole 41 is provided on the tempered glass substrate 40 for extracting air, generally It is arranged at the corner position; the sealing object 90 is arranged at the through hole 41, and the sealing object 90 outside the through hole 41 can be arranged after the two tempered glass substrates have been sealed to form a sealed cavity, or it can be combined with the tempered glass substrate. The supports 80 between the substrates are arranged together;

Step 200, after at least two layers of tempered glass substrates are sealed to form a sealed cavity, the vacuuming equipment uses the air extraction pipe 42 to extract air through the through hole 41;

Step 300, when a vacuum or near-vacuum environment is formed between the tempered glass substrates or during the process of extracting air, apply infrared heat radiation on the heating layer arranged outside the through hole, and heat the sealing layer arranged at the through hole 41 91 for heating;

Step 400, when the sealing layer 91 at the through hole 41 is heated and melted and the inside of the board reaches the required vacuum degree, reduce or even stop the application of infrared heat radiation, press the heating layer 92 outside the through hole 41, and the melted sealing layer 91 is cooled and condensed to seal the through hole 41 , and the pressed heating layer 92 forms a plane outside the condensed sealing layer 91 .

The technical solution of this embodiment effectively solves the problem that the tip formed at the existing vacuum sealing port is easily damaged. In the prior art, a tip is formed at one end of the suction tube while sealing off the suction tube for extracting air. The tip is a part where stress concentrates and is also a part that is easily damaged by external collisions. In the prior art, because the entire tempered glass substrate and the sealing substance are heated as a whole, it is difficult to controllably perform local heating at the through hole to avoid the occurrence of sharp ends.

In the process of vacuuming in this embodiment, before sealing, a getter can be further arranged between the sealed tempered glass substrates, so as to further increase the vacuum degree inside the tempered glass substrates.

Embodiment of the sealant 90: as shown in Figure 6, it is a schematic structural view of a specific embodiment of the sealant 90 of the present invention, the sealant 90 includes at least one sealing layer 91 and at least one heating layer 92, the sealing layer 91 and the heating layer 92 overlap each other. The sealant in this embodiment can be applied to the manufacturing method of the back-bolt type vacuum glass of the present invention. The material of the heating layer 92 may be iron or nickel or an iron-nickel alloy, and the sealing layer 91 may specifically be dark low-melting glass.

The sealant in this embodiment can be manufactured independently to become a solid component, and then placed at the position where the glass substrate is to be sealed during the sealing process. In comparison, in the prior art, the low-melting point glass powder is usually prepared into a paste and coated on the glass substrate as a sealant, as a sealing frame or support, and then another glass substrate is fastened and heated. A seal that cannot be independently processed into a solid form of a seal frame or support. Therefore, the technical solution of this embodiment has a simpler process than the prior art.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (6)

1. the method for manufacture of a back bolt type vacuum glass, said back bolt type vacuum glass comprises two-layer at least toughened glass, is vacuum layer between the reinforced glass substrate, and periphery carries out the vacuum tight sealing-in with glass, and the centre is provided with upholder; It is characterized in that: wherein one deck glass substrate is opened tempering behind the tapered hole, fixes so that anchor into back of the body bolt; The used glass of periphery is to have the dark low melting glass that absorbs the infrared rays characteristic; The upholder surface scribbles dark low melting glass; Method of manufacture comprises: step 1, dark low melting glass is arranged on two-layer reinforced glass substrate edge and tapered hole around, the upholder that the surface scribbles dark low melting glass disperses to lay in said reinforced glass substrate; Subassembly integral body is placed in the Vakuumkammer;

Step 2, on said subassembly, apply infrared emanation, the dark low melting glass in the said subassembly is heated;

Step 3, after said dark low melting glass is heated fusing, weaken so that stop to apply infrared emanation, the dark low melting glass cooling after the fusing is condensed, and is connected with first toughened glass and the sealing of second toughened glass; After being lower than 100 ℃, temperature in Vakuumkammer, takes out.

2. according to the method for manufacture of the said back bolt type vacuum glass of claim 1, it is characterized in that, also comprise between said step 1 and the step 2: with said substrate and the last sealing thing that is provided with thereof, integral body is heated to and is not higher than 400 ℃.

3. according to the method for manufacture of the said back bolt type vacuum glass of claim 1, it is characterized in that said step 2 also is: on said subassembly, apply infrared emanation, said dark low melting glass is heated to is not higher than 600 ℃ of melt-sealed.

4. the method for manufacture of a back bolt type vacuum glass, said back bolt type vacuum glass comprises two-layer at least toughened glass, is vacuum layer between the reinforced glass substrate, and periphery carries out the vacuum tight sealing-in with glass, and the centre is provided with upholder; It is characterized in that: wherein one deck glass substrate is opened tempering behind the tapered hole, fixes so that anchor into back of the body bolt; The used glass of periphery is to have the dark low melting glass that absorbs the infrared rays characteristic; The upholder surface scribbles dark low melting glass; Method of manufacture comprises: through hole is set on reinforced glass substrate; In through-hole side the sealing thing is set, in abutting connection with the through hole setting; This sealing thing comprises one deck sealing layer and one deck zone of heating at least at least, and sealing layer and zone of heating are folded each other to be established; Zone of heating is arranged on the side of sealing layer away from reinforced glass substrate, covers outside the sealing layer; After being formed sealing ply by sealing-in between the two-layer at least said reinforced glass substrate, utilize extraction pipe to pass through said through hole extracting air; In the process of extracting air, on the zone of heating of said through hole arranged outside, apply infrared emanation, the sealing layer that said through hole is provided with heats; Sealing layer when said through hole is heated fusing; And after reaching required vacuum tightness between reinforced glass substrate; Weaken so that stop to apply infrared emanation; And push the zone of heating in the through hole outside, the sealing layer cooling after the fusing condensed said through hole sealing, and the zone of heating that is pressed forms the plane outside agglomerative sealing layer.

5. according to the method for manufacture of the said back bolt type vacuum glass of claim 4, it is characterized in that: said through hole is a stepped hole, and said sealing layer and said zone of heating are arranged in the step of said stepped hole.

6. according to the method for manufacture of the said back bolt type vacuum glass of claim 4, it is characterized in that: also be included between each reinforced glass substrate of sealing-in getter is set.

Images