Vacuum glass metal sealing tape

Abstract

The utility model discloses a vacuum glass metal sealing belt which is characterized by comprising a hot melting belt, the hot melting belt is made of a welding material and is of a belt-shaped structure, concave-convex grains are arranged on the outer surface of the hot melting belt, and the concave-convex grains are three-dimensional stripes or three-dimensional dot grains. A plurality of small gaps which are communicated with the hollow part between the two pieces of glass are formed by the concave-convex grains of the hot melting belt; the width of the hot melting belt is 3mm-15mm, the thickness of the hot melting belt is 0.2 mm-2mm, a metalized layer is arranged on each of the peripheral surfaces of the two pieces of glass, and the hot melting belt is fixed on the metalized layers through spot welding. The hot melting belt is of a belt-shaped structure and can be conveniently laid on a metallization layer, meanwhile, the concave-convex grains on the hot melting belt can increase the friction coefficient and prevent the sealing belt from shifting due to the fact that air in the two pieces of glass is exhausted during vacuumizing, manual welding flux coating is not needed, the welding flux amount can be accurately controlled, the welding effect is good, the sealing effect is good, and the sealing effect is good. The method is suitable for processing vacuum glass without air exhaust holes.

Description

Technical Field

[0001] The utility model relates to the technical field of glass processing, and particularly relates to a metal sealing strip for vacuum processing of vacuum glass. Background Technique

[0002] Vacuum glass is a common environmental protection glass with good sound insulation and heat insulation effects. The processing method of vacuum glass generally first bonds and forms two spaced glass sheets, then leaves an air extraction hole for subsequent vacuum pumping, and then seals the air hole. Generally, it is processed in at least two steps.

[0003] In addition, in the existing melting coating sealing method, metallization is formed at the edge of the glass to form a metallized layer, and then solder is coated on the metallized layer and welded by high temperature to seal and fix the metallized layers of the two glasses. Since this method requires manual coating for feeding, it is inconvenient to control the amount of solder. Too much or too little will result in insufficient firmness after welding or partial position leakage welding, which takes a long time and is more troublesome. And during the processing, if the glass has an angular change or position movement, due to the glass being relatively smooth, the solder is likely to shift in position accordingly, resulting in uneven welding and thus vacuum leakage. Therefore, it is necessary to provide a metal sealing strip used in a vacuum sealing structure that is convenient for applying solder, has stable and convenient solder fixation, and reduces the processing steps of vacuum glass. Summary of the Utility Model

[0004] The utility model provides a metal sealing strip for vacuum glass to solve the problems raised in the above background technique.

[0005] To solve the above problems, the technical solution adopted by the utility model is:

[0006] A metal sealing strip for vacuum glass, characterized in that: it includes a hot melt tape, the hot melt tape is a welding material and is in a strip structure, the outer surface of the hot melt tape is provided with concave and convex patterns, the concave and convex patterns are three-dimensional stripes or three-dimensional dot patterns, and a number of small gaps communicating with the hollow between the two glasses are formed by the concave and convex patterns of the hot melt tape; the width of the hot melt tape is 3 mm to 15 mm, and the thickness is 0.2 mm to 2 mm. The two glasses are two glass sheets of the same size and are arranged relatively spaced apart. A metallized layer is provided on the peripheral surfaces of the opposite glasses, and the hot melt tape is arranged between the metallized layers of the two glasses, and the hot melt tape is fixed on the metallized layer by spot welding.

[0007] Compared with the prior art, the utility model has the following beneficial effects:

[0008] The hot melt tape described above is a tin soldering material, that is, the concave-convex pattern of the hot melt tape is a hot melt tape that can deform after being heated at high temperature, and can be completely adhered and sealed to the metallization layer, so that a vacuum-sealed glass without air extraction holes is formed after the two glasses are sealed. The hot melt tape is in a strip structure, which is convenient to lay on the metallization layer. At the same time, the concave-convex pattern on the hot melt tape can increase the friction coefficient and prevent the sealing tape from shifting due to the discharge of air inside the two glasses during vacuum pumping. It is also possible to place two glasses in a vacuum furnace. While heating the hot melt tape to seal the peripheries of the two glasses, since there are gaps between the concave-convex patterns provided on the surface of the hot melt tape, vacuum pumping can be carried out while heating and welding. When the glass sheets are evacuated in the vacuum furnace, the gas can pass through the gaps between the cloth patterns, accelerating the vacuum pumping speed, so as to realize the one-step processing of vacuum pumping and sealing of the vacuum glass without air extraction holes.

[0009] When the hot melt tape is used, there is no need to coat solder, which reduces the processing difficulty. It is only necessary to pre-place the hot melt tape on the metallization layer, greatly shortening the manufacturing steps and time. During heating and sealing, the solder is not likely to move in position, making the welding more uniform and having a good sealing effect. Brief Description of the Drawings

[0010] Figure 1 It is a schematic structural diagram of the processing state of the present invention;

[0011] 1 Glass; 2 Metallization layer; 3 Hot melt tape. Detailed Embodiment

[0012] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0013] Please refer to Figure 1, A vacuum glass metal sealing tape, comprising two pieces of glass 1 of the same size and arranged at a relative interval. A metallization layer 2 is provided on the peripheral surfaces of the opposite glasses 1. A hot melt tape 3 is provided between the metallization layers 2 of the two glasses 1. The concave-convex pattern of the hot melt tape 3 is a hot melt tape that can deform after being heated at a high temperature and is completely adhered and sealed to the metallization layer 2. After the two glasses 1 are sealed, a vacuum-sealed glass without an air extraction hole is formed. The two pieces of glass 1 can be two rectangular glasses of the same or different sizes. The two pieces of glass 1 are placed in an external vacuum furnace, and the glass 1 and the hot melt tape 3 are processed by vacuum brazing in the vacuum furnace. Vacuum brazing is a welding process in which, in a vacuum state, it is heated to a temperature above the melting point of the filler metal but below the melting point of the base metal, and a weld seam is formed by means of the wetting and flowing of the filler metal on the base metal. The vacuum furnace and vacuum brazing are both prior arts and will not be elaborated here. The hot melt tape 3 has a strip structure, which is convenient for laying on the metallization layer 2. At the same time, the concave-convex pattern on the hot melt tape 3 can increase the friction coefficient and prevent the sealing tape from shifting due to the discharge of air inside when the two glasses 1 are evacuated.

[0014] The width of the hot melt tape 3 is 3 mm to 15 mm, and the thickness is 0.2 mm to 2 mm. The width and thickness of the hot melt tape 3 are the amount of the sealing solder, and the amount of solder required for sealing different glasses 1 can be accurately controlled by adjusting the width and thickness of the hot melt tape 3.

[0015] The hot melt tape 3 is fixed on the metallization layer 2 by spot welding. Fixing the hot melt tape 3 on the metallization layer 2 in advance is convenient for subsequent assembly processing and prevents the hot melt tape 3 from shifting during the processing.

[0016] The outer surface of the hot melt tape 3 is provided with concave-convex patterns, and the concave-convex patterns can be three-dimensional stripes or three-dimensional dot patterns. A number of small gaps communicating with the hollow between the two glasses 1 are formed by the concave-convex patterns of the hot melt tape 3. The concave-convex patterns on both sides of the hot melt tape 3 are of the same shape. The three-dimensional dot patterns can improve the friction force. At the same time, when the hot melt tape 3 is fixed at a high temperature, the three-dimensional dot patterns form a multi-point fixing structure similar to spot welding, and the fixing effect is good. When the three-dimensional stripes and the glass 1 are assembled and evacuated, the gas can quickly exhaust through the channels between the cloth patterns, improving the evacuation speed.

[0017] The hot melt tape 3 can be other metal inorganic welding materials such as hot melt tin.

[0018] When the utility model is in use, calculate the required amount of solder according to the type and size of the glass 1, and then select the hot melt tape 3 with corresponding thickness and width. Fix the hot melt tape 3 on the metallization layer 2 by spot welding to ensure that the solder surrounds the glass 1 in a circle and prevent missed welding. Combine two pieces of glass 1, and after combination, put them into a prepared vacuum pumping device to pump the air in the cavity between the two pieces of glass 1. During this period, the gaps between the concave and convex patterns can accelerate the extraction of the air between the two pieces of glass 1 and improve the vacuum pumping efficiency. After the vacuum pumping is completed, heat the position of the hot melt tape 3 for fusion sealing.

[0019] The utility model is used for vacuum glass sealing without manual solder coating, can accurately control the amount of solder, will not have solder movement during welding, has good welding effect, and the gaps between the concave and convex patterns can accelerate the extraction of the air in the vacuum pumping layer and speed up the vacuum pumping speed during vacuum pumping.

[0020] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0021] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vacuum glass metal sealing tape, characterized in that: The invention comprises a hot melt tape (3), wherein the hot melt tape (3) is a welding material and has a strip-shaped structure. The outer surface of the hot melt tape (3) is provided with concave-convex patterns, wherein the concave-convex patterns are three-dimensional stripes or three-dimensional dot patterns. The concave-convex patterns of the hot melt tape (3) form a plurality of fine gaps connected to the hollow space between the two glasses (1).

2. A vacuum glass metal sealing tape according to claim 1, characterized in that: The width of the hot melt tape (3) is 3 mm to 15 mm, and the thickness is 0.2 mm to 2 mm.

3. The vacuum glass metal sealing tape according to claim 1, characterized in that: The two glasses are two pieces of glass (1) of the same size and arranged at a relative interval. The surfaces of the opposite glasses (1) are all provided with a metallized layer (2). The hot melt tape (3) is arranged between the metallized layers (2) of the two glasses (1).

4. The vacuum glass metal sealing tape according to claim 1, characterized in that: The hot melt tape (3) is fixed on the metallized layer (2) by spot welding.

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