A vacuum process for producing double-layer glass

Abstract

The present invention discloses a vacuuming process for double-layer glass production, comprising the following steps: step one, evenly arranging a number of support columns and iron-nickel-cobalt alloy sealing rings on the surface of the lower glass; step two, air-tightly connecting the three branch pipe ports of the special three-way head to the exhaust pipe, the suction pump and the sealer respectively; step three, starting the upper heating plate and the lower heating plate to heat the double-layer glass, and as the temperature rises, the iron-nickel-cobalt alloy sealing ring and the edge of the double-layer glass are fused together to complete the edge sealing; step four, starting the suction pump to extract the air between the double-layer glass from the exhaust pipe, forming a vacuum between the double-layer glass; step five, after the vacuuming is completed, starting the telescopic rod to push the sealing plug in the special three-way head into the exhaust pipe, and the sealing plug blocks the exhaust pipe mouth to complete the sealing of the exhaust pipe. In the above-mentioned vacuuming process, the entire edge sealing, vacuuming and sealing process are all carried out in the vacuuming box, simplifying the entire vacuuming process, and requiring low equipment.

Description

Technical Field

[0001] The invention relates to the technical field of glass manufacturing, and in particular to an evacuation process for producing double-layer glass. Background Art

[0002] Vacuum glass is a new type of energy-saving glass. It can not only solve the "breathing" problem of the existing insulating glass that is widely used, but also has the advantages of good heat insulation and sound insulation, high wind pressure resistance, small thickness and long service life. Vacuum glass is generally composed of two or three pieces of glass. A cavity is formed between two adjacent pieces of glass. Sealant is set around the glass to form a vacuum layer after the cavity is evacuated.

[0003] Double-layer vacuum glass is widely used in car windows and windshields. During the production process, the gas in the gap between the two layers of glass needs to be evacuated. The existing vacuum process requires the double-layer glass after edge sealing to be placed in a vacuum environment, and the air between the double-layer glass is extracted through the reserved exhaust holes, and then the exhaust holes need to be sealed. This requires special vacuum environment equipment and vacuum equipment, which makes the entire vacuum process complicated, requires many equipments, and has high environmental requirements and production costs, resulting in high product prices and low market competitiveness. Summary of the invention

[0004] The purpose of the present invention is to provide a vacuuming process for producing double-glazed glass to solve the problems of the existing vacuuming process being complicated, using many equipments, having high environmental requirements and production costs, and resulting in high product prices.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A double-glazed glass production vacuum process, comprising the following steps:

[0007] Step 1, placing the glass and support columns: placing the lower glass on the lower heating plate in the vacuum box, then evenly arranging a number of support columns on the surface of the lower glass, and arranging an iron-nickel-cobalt alloy sealing ring with an exhaust pipe on the edge of the surface of the lower glass, and then covering the upper glass with the lower glass to form a double-layer glass to be processed, and finally starting the lifting cylinder to push the upper heating plate to press against the surface of the upper glass;

[0008] Step 2, connect the special tee: connect the three branch pipe ports of the special tee to the suction pipe, the suction pump and the sealer in an airtight manner;

[0009] Step 3: Edge sealing: Start the upper heating plate and the lower heating plate to heat the double-layer glass. As the temperature rises, the iron-nickel-cobalt alloy sealing ring fuses with the edge of the double-layer glass to complete the edge sealing.

[0010] Step 4: Vacuuming: After the edge sealing is completed, start the vacuum pump to extract the air between the double-layer glass from the vacuum pipe to form a vacuum between the double-layer glass;

[0011] Step 5, sealing: After the vacuum is completed, start the telescopic rod to push the sealing plug in the special three-way head into the exhaust pipe. The sealing plug blocks the exhaust pipe opening to complete the sealing of the exhaust pipe.

[0012] As a further solution of the present invention: a notch is respectively opened at the same edge of the double-layer glass, and an exhaust pipe is arranged at the notch, and the front end surface of the exhaust pipe does not exceed the edge end surface of the double-layer glass.

[0013] As a further solution of the present invention: the sealing plug is also made of an iron-nickel-cobalt alloy material, and a metal slurry coating is applied to the inner wall of the exhaust pipe, and the metal slurry coating helps the sealing plug to fit the exhaust pipe airtightly.

[0014] As a further solution of the present invention: in the sealing process, after the telescopic rod pushes the sealing plug to block the outlet of the exhaust pipe, the heating block at the end of the telescopic rod is started to heat the sealing plug made of iron-nickel-cobalt alloy material so that the edge of the sealing plug and the inner wall of the exhaust pipe are fused together.

[0015] And an evacuation box used in the evacuation process for producing double-layer glass, comprising a box body, an air suction pump is arranged on the box body, a sealer is arranged on the inner side wall of the box body, a placement table is arranged at the bottom of the box body, a lower heating plate is arranged on the placement table, a lifting cylinder is arranged at the top of the box body, and an upper heating plate is arranged at the telescopic end of the lifting cylinder;

[0016] It also includes a special tee head, the three branches of which are respectively used for air-tight connection with the suction pump, the sealer and the exhaust pipe on the double-layer glass, and the branch of the special tee head used for connecting with the sealer is provided with a sealing plug.

[0017] As a further solution of the present invention: the outer peripheries of the three branch pipes of the special tee can be rotatably threaded with a sealing sleeve.

[0018] As a further solution of the present invention: the suction end of the suction pump is connected to a suction hose, and the end of the suction hose that passes through the box body is integrally connected to a first metal threaded tube.

[0019] As a further solution of the present invention: the sealer comprises:

[0020] A sealing cover is arranged on the inner wall of the box body, a second metal threaded pipe is integrally connected to the side of the sealing cover, and the second metal threaded pipe is communicated with the inside of the box body;

[0021] A telescopic rod is fixedly disposed in the sealing cover, and a telescopic end of the telescopic rod is slidably and closely disposed in the second metal threaded tube;

[0022] The heating block is fixedly arranged on the telescopic end of the telescopic rod.

[0023] As a further solution of the present invention: a heating pump is also provided in the box.

[0024] The present invention has at least the following beneficial effects:

[0025] By setting up an evacuation box and a special three-way head, when evacuating, the three branches of the special three-way head are respectively connected airtightly with the suction pump, the sealer and the suction pipe on the double-layer glass. After the double-layer glass is sealed in the evacuation box, the air between the double-layer glass can be extracted from the suction pipe through the special three-way head by the suction pump, so as to form a vacuum between the double-layer glass. After evacuating, the sealing plug in the special three-way head is pushed into the suction pipe through the sealer, and the sealing plug blocks the pipe opening of the suction pipe to complete the sealing of the suction pipe. The entire edge sealing, evacuating and sealing processes are carried out in the evacuation box, which simplifies the entire vacuuming process. The entire process does not need to be carried out in special vacuum environment equipment, and the equipment requirements are low, thereby reducing the production cost of the product and improving the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 It is a three-dimensional schematic diagram of the double-layer glass structure of the present invention;

[0028] Figure 2 It is a schematic cross-sectional view of the double-glazed structure of the present invention;

[0029] Figure 3 It is a schematic cross-sectional view of the structure of the evacuation box of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the special three-way head of the present invention;

[0031] Figure 5 It is a schematic cross-sectional view of the special three-way head structure of the present invention.

[0032] In the figure: 1. box body; 2. suction pump; 3. sealer; 4. placement table; 5. lower heating plate; 6. lifting cylinder; 7. upper heating plate; 8. special three-way head; 9. exhaust pipe; 10. sealing plug; 11. sealing sleeve; 12. suction hose; 13. first metal threaded pipe; 14. sealing cover; 15. second metal threaded pipe; 16. telescopic rod; 17. heating block; 18. heating pump; 19. upper glass; 20. lower glass; 21. support column; 22. iron-nickel-cobalt alloy sealing ring; 23. gap. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-5 As shown, the present invention provides a vacuuming process for producing double-layer glass, which specifically includes the following steps:

[0035] Step 1, placing the glass and support columns 21: according to the shape and size of the double-layer vacuum glass to be produced, the upper glass 19 and the lower glass 20 of the required size are cut. The two glasses are tempered glass or semi-tempered glass, one of which can be low-emissivity glass, and a notch 23 can be opened at the same edge and position of the double-layer glass. Then, the upper glass 19 and the lower glass 20 are edged, chamfered, cleaned and dried. After the preparation work is completed, the box door is opened, and the lower glass 20 is placed on the lower heating plate 5 in the vacuum box. Then, a number of support columns 21 are evenly arranged on the surface of the lower glass 20. The support columns 21 are used to To maintain the interval between the two pieces of glass, the support column 21 can be a common support column 21 made of metal, ceramic, alloy and other materials, and then an iron-nickel-cobalt alloy sealing ring 22 with an exhaust pipe 9 is arranged on the edge of the surface of the lower glass 20. The exhaust pipe 9 can also be made of iron-nickel-cobalt alloy material. The exhaust pipe 9 and the iron-nickel-cobalt alloy sealing ring 22 can be integrally formed by injection molding. The exhaust pipe 9 is arranged at the notch 23, and the front end face of the exhaust pipe 9 does not exceed the edge face of the double-layer glass; then the upper glass 19 is covered on the lower glass 20 to form a double-layer glass to be processed, and finally the lifting cylinder 6 is started to push the upper heating plate 7 to press against the surface of the upper glass 19.

[0036] Step 2, connect the special tee 8: Specifically, when placing the iron-nickel-cobalt alloy sealing ring 22, the port of the exhaust pipe 9 should be aligned with the port of the sealer 3. After alignment, start the lifting cylinder 6 to push the upper heating plate 7 to press against the surface of the upper glass 19, and then connect the three branch pipe ports of the special tee 8 to the exhaust pipe 9, the suction pump 2 and the sealer 3 in an airtight manner respectively.

[0037] Step three, edge sealing: after connecting the special three-way head 8, close the box door, start the upper heating plate 7 and the lower heating plate 5 to heat the double-layer glass. As the temperature rises to the melting point of the iron-nickel-cobalt alloy, the upper and lower surfaces of the iron-nickel-cobalt alloy sealing ring 22 melt, and the molten iron-nickel-cobalt alloy sticks to the lower surface of the upper glass 19 and the upper surface of the lower glass 20, so that the iron-nickel-cobalt alloy sealing ring 22 is fused with the edge of the double-layer glass to complete the edge sealing.

[0038] Step 4, vacuuming: After the edge sealing is completed, stop heating and open the door on the box body 1 to quickly cool down the box body 1, and the molten iron-nickel-cobalt alloy solidifies again, so that the upper glass 19 and the lower glass 20 are fastened together, and then the suction pump 2 is started. The suction pump 2 draws the air between the double-layer glass from the suction pipe 9 through the special three-way head 8 to form a vacuum between the double-layer glass.

[0039] Step 5, sealing: after the vacuuming is completed, start the telescopic rod 16 to push the sealing plug 10 in the special three-way head 8 into the exhaust pipe 9. The sealing plug 10 blocks the pipe opening of the exhaust pipe 9 to complete the sealing of the exhaust pipe 9. Specifically, a metal slurry coating can be applied to the inner wall of the exhaust pipe 9. The metal slurry coating helps the sealing plug 10 to fit the exhaust pipe 9 airtightly. After the sealing is completed, the telescopic rod 16 retracts, and the lifting cylinder 6 is controlled to rise, so that the double-glazed product after edge sealing and vacuuming can be taken out of the box body 1.

[0040] By adopting the above-mentioned vacuuming process for the production of double-layer glass, the edge sealing, vacuuming and sealing of the double-layer glass are all carried out in the vacuum box. There is no need to first seal the double-layer glass in one device, then place it in a special vacuum environment equipment for vacuuming, and finally seal the vacuum holes. The entire vacuuming process is simplified, less equipment is used, and the production efficiency is high, thereby reducing the production cost of the product and improving the market competitiveness of the product.

[0041] like Figure 3-5 As shown, the present invention also provides an evacuation box, which is used in the evacuation process for the production of double-layer glass. The evacuation box includes a box body 1, a box door is opened on one side of the box body 1, an air suction pump 2 is arranged on the top of the box body 1, a sealer 3 is arranged on the inner wall of the box body 1, a placement table 4 is arranged at the bottom of the box body 1, and a lower heating plate 5 is arranged on the placement table 4. Preferably, in order to make the lower layer of glass 20 be stably placed on the lower heating plate 5, a limiting groove can be opened on the lower heating plate 5, and the lower layer of glass 20 can be placed in the limiting groove. A heating pump 18 is also arranged in the box body 1, a lifting cylinder 6 is arranged on the top of the box body 1, and an upper heating plate 7 is arranged at the telescopic end of the lifting cylinder 6; it also includes a special three-way head 8, and the three branches of the special three-way head 8 are respectively used for air-tight connection with the suction pump 2, the sealer 3 and the evacuation pipe 9 on the double-layer glass, and the branch pipe of the special three-way head 8 used for connecting with the sealer 3 is provided with a sealing plug 10.

[0042] like Figure 4 As shown, the three branches of the special tee head 8 can be rotatably threadedly sleeved with a sealing sleeve 11 on their outer circumferences. After the three branches of the special tee head 8 are connected to the suction pump 2, the sealer 3 and the exhaust pipe 9, the three branches of the special tee head 8 are airtightly connected to the suction pump 2, the sealer 3 and the exhaust pipe 9 through the sealing sleeve 11.

[0043] Specifically, if Figure 3 As shown, after the double-glazed glass is placed, align the right-side branch pipe opening of the special tee 8 with the pipe opening of the exhaust pipe 9, and then rotate the sealing sleeve 11 on the right-side branch pipe of the special tee 8 so that the sealing sleeve 11 is sleeved on the joint between the right-side branch pipe port of the special tee 8 and the pipe opening of the exhaust pipe 9, thereby completing the airtight connection between the special tee 8 and the exhaust pipe 9.

[0044] For the connection between the special tee 8 and the air suction pump 2, an air suction hose 12 can be connected to the air suction end of the air suction pump 2. The air suction hose 12 passes through the end portion inside the box body 1 and is integrally connected with a first metal threaded pipe 13. During installation, the pipe mouth of the first metal threaded pipe 13 is aligned with the upper branch pipe port of the special tee 8, and then the sealing sleeve 11 on the upper branch pipe of the special tee 8 is rotated so that the sealing sleeve 11 is sleeved on the joint between the upper branch pipe port of the special tee 8 and the first metal threaded pipe 13, thereby completing the airtight connection between the special tee 8 and the air suction pump 2.

[0045] Regarding the connection between the special tee 8 and the sealer 3, the sealer 3 specifically includes a sealing cover 14, a telescopic rod 16 and a heating block 17. The sealing cover 14 is arranged on the inner wall of the box body 1. The sealing cover 14 can be made of a material with good heat insulation effect. The side of the sealing cover 14 is integrally connected with a second metal threaded tube 15, and the second metal threaded tube 15 is connected to the inside of the box body 1; the telescopic rod 16 is fixedly arranged in the sealing cover 14, and the telescopic end of the telescopic rod 16 is slidably fitted in the second metal threaded tube 15; the heating block 17 is fixedly arranged at the telescopic end of the telescopic rod 16; during installation, align the pipe mouth of the second metal threaded tube 15 with the left branch pipe port of the special tee 8, and then rotate the sealing sleeve 11 on the left branch pipe of the special tee 8, so that the sealing sleeve 11 is sleeved on the left branch pipe port of the special tee 8 and the joint between the second metal threaded tube 15, and complete the airtight connection between the special tee 8 and the sealer 3.

[0046] In the description of the present invention, it should be understood that terms such as "up", "down", "left", "right", "front" and "back" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, they should not be understood as limitations on the present invention.

[0047] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The above is a detailed description of the preferred embodiments of the present invention, which cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A vacuum process for producing double-glazed glass, characterized in that: The following steps are involved: Placing the glass and the supporting columns (21): placing the lower layer of glass (20) on the lower heating plate (5) in the vacuum box, then evenly arranging a number of supporting columns (21) on the surface of the lower layer of glass (20), and arranging an iron-nickel-cobalt alloy sealing ring (22) with an exhaust pipe (9) on the edge of the surface of the lower layer of glass (20), then covering the upper layer of glass (19) on the lower layer of glass (20) to form a double-layer glass to be processed, and finally starting the lifting cylinder (6) to push the upper heating plate (7) to press against the surface of the upper layer of glass (19); Connecting the special three-way head (8): the three branch pipe ports of the special three-way head (8) are respectively connected to the air extraction pipe (9), the air suction pump (2) and the sealer (3) in an airtight manner; Edge sealing: starting the upper heating plate (7) and the lower heating plate (5) to heat the double-layer glass, and as the temperature rises, the iron-nickel-cobalt alloy sealing ring (22) fuses with the edge of the double-layer glass to complete the edge sealing; Vacuuming: After the edge sealing is completed, the suction pump (2) is started to extract the air between the double-layered glass from the suction pipe (9), thereby forming a vacuum between the double-layered glass; Sealing: After the vacuuming is completed, the telescopic rod (16) is started to push the sealing plug (10) in the special three-way head (8) into the exhaust pipe (9), and the sealing plug (10) blocks the pipe opening of the exhaust pipe (9), so that the edge of the sealing plug (10) and the inner wall of the exhaust pipe (9) are fused together, thereby completing the sealing of the exhaust pipe (9).

2. The vacuum process for producing double-glazed glass according to claim 1, characterized in that: Before placing the glass and the support column (21), a notch (23) is opened on the same edge of the double-layer glass, and the exhaust pipe (9) is arranged at the notch (23), and the front end surface of the exhaust pipe (9) does not exceed the edge end surface of the double-layer glass.

3. The vacuum process for producing double-glazed glass according to claim 1, characterized in that: In the sealing process, the sealing plug (10) is also made of an iron-nickel-cobalt alloy material, and a metal slurry coating is applied to the inner wall of the exhaust pipe (9). The metal slurry coating helps the sealing plug (10) to fit the inner wall of the exhaust pipe (9) in an airtight manner.

4. The evacuation process for producing double-glazed glass according to claim 3, characterized in that: In the sealing process, after the telescopic rod (16) pushes the sealing plug (10) to block the outlet of the exhaust pipe (9), the heating block (17) at the end of the telescopic rod (16) is started to heat the sealing plug (10) made of an iron-nickel-cobalt alloy material, so that the edge of the sealing plug (10) and the inner wall of the exhaust pipe (9) are fused together.

5. An evacuation box used in the evacuation process for producing double-glazed glass according to claim 1, comprising a box body (1), characterized in that: The box body (1) is provided with an air suction pump (2), the inner side wall of the box body (1) is provided with a sealer (3), the bottom of the box body (1) is provided with a placement table (4), the placement table (4) is provided with a lower heating plate (5), the top of the box body (1) is provided with a lifting cylinder (6), and the telescopic end of the lifting cylinder (6) is provided with an upper heating plate (7); It also comprises a special three-way head (8), the three branches of which are respectively used for airtight connection with the suction pump (2), the sealer (3) and the exhaust pipe (9) on the double-layer glass, and a sealing plug (10) is arranged in the branch of the special three-way head (8) for connecting with the sealer (3).

6. The evacuation box according to claim 5, characterized in that: The outer circumferences of the three branch pipes of the special tee (8) can be rotatably threaded with a sealing sleeve (11).

7. The evacuation box according to claim 6, characterized in that: The suction end of the suction pump (2) is connected to a suction hose (12), and the end of the suction hose (12) that passes through the box body (1) is integrally connected to a first metal threaded tube (13).

8. The evacuation box according to claim 6, characterized in that: The sealer (3) comprises: A sealing cover (14) is arranged on the inner wall of the box body (1), a second metal threaded pipe (15) is integrally connected to the side of the sealing cover (14), and the second metal threaded pipe (15) is communicated with the interior of the box body (1); A telescopic rod (16) is fixedly disposed in the sealing cover (14), and a telescopic end of the telescopic rod (16) is slidably and closely disposed in the second metal threaded tube (15); The heating block (17) is fixedly arranged on the telescopic end of the telescopic rod (16).

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