CN111847904A - Preparation method of vacuum glass - Google Patents
Preparation method of vacuum glass Download PDFInfo
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- CN111847904A CN111847904A CN201910343386.9A CN201910343386A CN111847904A CN 111847904 A CN111847904 A CN 111847904A CN 201910343386 A CN201910343386 A CN 201910343386A CN 111847904 A CN111847904 A CN 111847904A
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- 239000011521 glass Substances 0.000 title claims abstract description 330
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 79
- 239000000853 adhesive Substances 0.000 claims abstract description 38
- 230000001070 adhesive effect Effects 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000003825 pressing Methods 0.000 claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 125
- 230000008569 process Effects 0.000 claims description 121
- 239000000843 powder Substances 0.000 claims description 17
- 239000011230 binding agent Substances 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 132
- 238000004806 packaging method and process Methods 0.000 description 19
- 238000011068 loading method Methods 0.000 description 16
- 238000007599 discharging Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 238000000605 extraction Methods 0.000 description 5
- 239000005357 flat glass Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
The invention discloses a preparation method of vacuum glass. The preparation method of the vacuum glass comprises the following steps: s1, paving an adhesive on the edge of one surface of the first glass, forming at least one opening on the adhesive, covering the second glass on the first glass, enabling the adhesive to be positioned between the edge of the first glass and the edge of the second glass, and communicating the opening with the gap between the outside and the first glass and the second glass to form a glass sandwich structure; s2, placing the glass sandwich structure into a closed cavity, and vacuumizing the closed cavity until a gap between the first glass and the second glass is in a vacuum state; applying pressure to the top and bottom surfaces of the glass sandwich structure; heating the glass sandwich structure to a preset temperature so as to melt the adhesive, and keeping the temperature for a period of time; and S3, cooling to form the vacuum glass. The vacuum glass prepared by the preparation method of the vacuum glass is light and thin as a whole, does not leak gas, and is good in performance, short in production flow and high in efficiency.
Description
Technical Field
The invention relates to the technical field of high-performance glass, in particular to a preparation method of vacuum glass.
Background
The vacuum glass is a novel energy-saving glass front-edge product developed based on the principle of a vacuum flask, namely a layer of vacuum degree lower than 10 is artificially constructed between two layers of flat glass -1Pa vacuum interlayer. Because the vacuum layer exists between the glass, heat conduction and convection basically do not exist, sound cannot be transmitted, and the LOW-E reflecting layer on the flat glass can reflect more than 95 percent of heat radiation, the functions of the vacuum glass in the aspects of heat preservation, heat insulation, noise reduction and the like far exceed those of the hollow glass widely used at present.
At present, the domestic vacuum glass industry is still in the early development stage, the whole capacity scale is not large, and the traditional production process is generally adopted, namely, the peripheries of two pieces of glass are sealed in a high-temperature furnace under normal pressure, the sealed cavity between the two pieces of glass is vacuumized through a prefabricated exhaust opening after the edge sealing is finished, and finally the exhaust opening is sealed after the exhaust is finished, so that the vacuum glass is manufactured. The traditional manufacturing method has the following defects: 1. the stress of the air pumping port is concentrated, so that only plate glass with the thickness of more than 6 cm can be selected, the cost is increased, and the transportation and the installation are more inconvenient; the extraction opening is provided with a tail, stress is concentrated, and the extraction opening is easy to break, so that when the extraction pipe is installed and removed, the work difficulty is high, the work is difficult to complete by a robot hand and can only be completed manually, and the automation transformation difficulty is high; in addition, one more hole is arranged on the glass, so that the area and the point of air leakage are increased, and the vacuum state is more difficult to maintain for a long time. 2. The production flow needs punching and other processes, the process flow is longer, and the yield is reduced; high-temperature exhaust is usually adopted for obtaining vacuum, namely, the exhaust in a high-temperature furnace at the temperature of more than 350 ℃ is required to be carried out for 8 hours so as to effectively remove various gases on the gap layer of the vacuum glass and the inner surface and the deep layer of the glass, so that the vacuum glass has to be produced according to the furnace, the normal production capacity is about 15 sheets/8 hours, and the production efficiency is low. 3. The edge sealing is carried out by adopting the glass powder, the sintering temperature is higher and is basically more than four-five-hundred ℃, and the glass has annealing possibility.
Disclosure of Invention
Therefore, the invention needs to provide a method for preparing vacuum glass, which is light and thin as a whole, has no air leakage, good performance, short production flow and high efficiency.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a preparation method of vacuum glass comprises the following steps:
s1, paving an adhesive on the edge of one surface of the first glass, forming at least one opening on the adhesive, covering the second glass on the first glass, enabling the adhesive to be located between the edge of the first glass and the edge of the second glass, and enabling the opening to be communicated with the gap between the outside and the first glass and the second glass to form a glass sandwich structure;
s2, placing the glass sandwich structure into a closed cavity, and vacuumizing the closed cavity until the gap between the first glass and the second glass is in a vacuum state; applying pressure to the top and bottom surfaces of the glass sandwich structure; heating the glass sandwich structure to a preset temperature to melt the adhesive, and keeping the temperature for a period of time;
and S3, cooling to form the vacuum glass.
According to the preparation method of the vacuum glass, the extraction opening is not arranged, the concentrated stress is avoided, and the vacuum glass can be prepared by adopting the glass which is light and thin to 3 cm, so that the vacuum glass is light and thin as a whole; the vacuum glass is ensured not to leak air, the vacuum state is kept for a long time, the performance of the vacuum glass is ensured, and the service life is prolonged; the whole body is beautiful and flat without an air exhaust port; the whole process is completed automatically, and the production process is short and efficient.
In some embodiments, the step S2 specifically includes: the closed cavity comprises a wafer feeding cavity and a process cavity; firstly, the glass sandwich structure is arranged in a sheet feeding cavity, and the sheet feeding cavity is vacuumized until the gap between the first glass and the second glass is in a vacuum state; and then vacuumizing the process cavity to the same vacuum degree as the sheet feeding cavity, then enabling the glass sandwich structure to enter the process cavity, applying pressure to the top surface and the bottom surface of the glass sandwich structure, heating the glass sandwich structure to a preset temperature to melt the adhesive, and keeping the temperature for a period of time.
In some embodiments, the step S2 specifically includes: firstly, the glass sandwich structure is arranged in a preheating cavity, and the preheating cavity is vacuumized until the gap between the first glass and the second glass is in a vacuum state; then heating the glass sandwich structure for preheating; and then vacuumizing the process cavity to the same vacuum degree as the preheating cavity, then enabling the glass sandwich structure to enter the process cavity, applying pressure to the top surface and the bottom surface of the glass sandwich structure, heating the glass sandwich structure to a preset temperature to melt the adhesive, and keeping the temperature for a period of time.
In some embodiments, the step S2 specifically includes: firstly, the glass sandwich structure is arranged in a sheet feeding cavity, and the sheet feeding cavity is vacuumized until the gap between the first glass and the second glass is in a vacuum state; vacuumizing the preheating cavity, enabling the glass sandwich structure to enter the preheating cavity, and then heating the glass sandwich structure for preheating; and then vacuumizing the process cavity to the same vacuum degree as the preheating cavity, then enabling the glass sandwich structure to enter the process cavity, applying pressure to the top surface and the bottom surface of the glass sandwich structure, heating the glass sandwich structure to a preset temperature to melt the adhesive, and keeping the temperature for a period of time.
In some embodiments, the closed cavity is evacuated to a vacuum of less than 8.0 x 10-4pa。
In some of these embodiments, the binder is a glass frit and the glass sandwich structure is heated to a temperature of 150 ℃ to 230 ℃.
In some embodiments, the temperature is maintained for a time period of 15min to 30 min.
The invention also provides a preparation method of the vacuum glass, which comprises the following steps:
s1, paving glass powder on the edge of one surface of first glass, forming at least one opening on the glass powder, covering second glass on the first glass, enabling the glass powder to be located between the edge of the first glass and the edge of the second glass, and enabling the opening to be communicated with the outside and a gap between the first glass and the second glass to form a glass sandwich structure;
S20, placing the glass sandwich structure into a sheet feeding cavity, and vacuumizing the sheet feeding cavity until the vacuum degree is less than 8.0 x 10-4pa, the gap between the first glass and the second glass is in a vacuum state;
s21, vacuumizing a preheating cavity to the same vacuum degree as the sheet feeding cavity, enabling the glass sandwich structure to enter the preheating cavity, and then heating the glass sandwich structure to 150-230 ℃ for preheating;
s22, vacuumizing a process cavity to the same vacuum degree as that of the preheating cavity, then enabling the glass sandwich structure to enter the process cavity, applying pressure to the top surface and the bottom surface of the glass sandwich structure, and heating the glass sandwich structure to 150-230 ℃ to melt the glass powder, wherein the temperature is kept for 15-30 min;
and S3, cooling to form the vacuum glass.
In some embodiments, the process chamber comprises a heating station and a cooling station, and the step S3 is performed at the cooling station of the process chamber.
In some embodiments, the step S3 specifically includes: and vacuumizing the sheet outlet cavity to the same vacuum degree as the process cavity, and then cooling the glass sandwich structure in the sheet outlet cavity to form the vacuum glass.
Drawings
FIG. 1 is a schematic structural view of a process chamber of a packaging furnace according to a preferred embodiment of the present invention;
FIG. 2 is a schematic view of another perspective of the process chamber of FIG. 1;
FIG. 3 is a schematic view of another perspective of the process chamber of FIG. 1;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic structural view of a packaging furnace according to a second embodiment of the present invention;
FIG. 6 is a schematic view of the internal structure of the packaging oven of FIG. 5;
FIG. 7 is a schematic view of the internal structure of a packaging furnace according to a third embodiment of the present invention;
FIG. 8 is a schematic view of the preheating chamber of the packaging oven of FIG. 7;
FIG. 9 is a sectional view taken along line B-B of FIG. 8;
FIG. 10 is a schematic structural view of a packaging furnace according to the fourth embodiment of the present invention;
fig. 11 is a schematic view of the internal structure of the packaging furnace shown in fig. 10.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example one
The invention provides a preparation method of vacuum glass, which comprises the following steps:
s1, paving an adhesive on the edge of one surface of the first glass, forming at least one opening on the adhesive, covering the second glass on the first glass, enabling the adhesive to be located between the edge of the first glass and the edge of the second glass, and enabling the opening to be communicated with the gap between the outside and the first glass and the gap between the outside and the second glass to form a glass sandwich structure.
S2, placing the glass sandwich structure into a closed cavity, vacuumizing the closed cavity, and vacuumizing a gap between the first glass and the second glass from the opening to be in a vacuum state; applying pressure to the top and bottom surfaces of the glass sandwich structure; heating the glass sandwich structure to a preset temperature to melt the adhesive, keeping the temperature for a period of time, and filling the edge between the first glass and the second glass under pressure after the adhesive is melted so as to close the gap between the first glass and the second glass. The purpose of the pressure is to ensure that the glass sandwich structure does not move freely, and the first glass and the second glass are mutually bonded together under the action of the pressure.
And S3, cooling to form the vacuum glass. The cooling step can be carried out in the closed cavity or can be carried out outside the closed cavity for cooling.
The closed cavity is vacuumized until the vacuum degree is less than 8.0 x 10-4pa. Under the vacuum degree, the vacuum state between the first glass and the second glass and in the closed cavity can be ensured.
The heating temperature of the glass sandwich is related to the nature of the adhesive. The adhesive may be any adhesive capable of bonding glass, such as adhesive, or glass frit. The glass powder is melted at high temperature and can be bonded with glass after being cooled. The adhesive is preferably glass powder, and the heating temperature of the glass sandwich structure is 150-230 ℃. The temperature is kept for 15min-30 min.
The manner of applying pressure described above can be chosen in many ways, for example by pressing it with two movable pressure plates or by inflating a balloon.
According to the preparation method of the vacuum glass, the extraction opening is not arranged, the concentrated stress is avoided, and the vacuum glass can be prepared by adopting the glass which is light and thin to 3 cm, so that the vacuum glass is light and thin as a whole; the vacuum glass is ensured not to leak air, the vacuum state is kept for a long time, the performance of the vacuum glass is ensured, and the service life is prolonged; the whole body is beautiful and flat without an air exhaust port; the whole process is completed automatically, and the production process is short and efficient.
Referring to fig. 1 to 4, the embodiment may employ a packaging furnace 100, which includes a process chamber 10, a first vacuum mechanism 12 connected to the process chamber 10, a pressing mechanism 20 installed in the process chamber 10, and a first heating mechanism 30 installed in the process chamber 10, wherein the pressing mechanism 20 is configured to press a product, i.e., a glass sandwich structure, after the product is loaded into the process chamber 10, the first heating mechanism 30 is configured to heat the glass sandwich structure, and the first vacuum mechanism 12 is configured to evacuate the process chamber 10.
Referring to fig. 4, for example, the pressing mechanism 20 includes a high temperature-resistant bladder 21, and the bladder 21 is installed on the top of the process chamber 10. When the sandwich glass structure needs to be pressed, the air-filled bag 21 is inflated, and as the air-filled bag 21 is inflated, it presses against the top surface of the sandwich glass structure.
Of course, the pressing mechanism 20 also includes a structure for pressing the bottom surface of the glass sandwich structure. For example, the glass sandwich structure is loaded by a loading mechanism 40, and when the air bag 21 presses the top surface of the glass sandwich structure, the bottom surface is also pressed by the loading mechanism 40.
Further, the process chamber 10 may include a heating station and a cooling station, the first heating mechanism 30 is located at the heating station, the cooling station is provided with a cooling mechanism, and the cooling mechanism is used for cooling down products such as a glass sandwich structure. Thus, the vacuum glass prepared after the temperature reduction in the process chamber 10 is transported out of the process chamber 10. And the subsequent cooling process is omitted. The cooling mechanism may be a water cooling mechanism, and the like, and is not limited herein.
In this embodiment, when only the process chamber 10 is used, the conveying mechanism 50 may be arranged to convey the glass sandwich structure into the process chamber 10, or the glass sandwich structure may be manually placed into the process chamber 10 without being arranged.
Example two
Different from the first embodiment, the invention provides a preparation method of vacuum glass, which comprises the following steps:
s1, paving an adhesive on the edge of one surface of the first glass, forming at least one opening on the adhesive, covering the second glass on the first glass, enabling the adhesive to be positioned between the edge of the first glass and the edge of the second glass, and communicating the opening with the gap between the outside and the first glass and the second glass to form a glass sandwich structure;
s2, firstly, the glass sandwich structure is arranged in the sheet feeding cavity, and the sheet feeding cavity is vacuumized until the gap between the first glass and the second glass is in a vacuum state; and then vacuumizing the process cavity to the same vacuum degree as the sheet feeding cavity, then enabling the glass sandwich structure to enter the process cavity, applying pressure to the top surface and the bottom surface of the glass sandwich structure, heating the glass sandwich structure to a preset temperature to melt the adhesive, and keeping the temperature for a period of time. The glass sandwich structure is firstly vacuumized in the sheet feeding cavity and then enters the process cavity for heating treatment, and when the current glass sandwich structure is heated, the untreated glass sandwich structure can enter the sheet feeding cavity for vacuumizing, so that the treatment progress can be accelerated, and the treatment efficiency is ensured.
And S3, cooling to form the vacuum glass.
Referring to fig. 5 and 6, a packaging furnace 200 according to the present embodiment may be used for packaging, which is different from the packaging furnace of the first embodiment, and includes a process chamber 10, a first vacuum mechanism 12 communicated with the process chamber 10, a pressure mechanism 20 installed in the process chamber 10, a first heating mechanism 30 installed in the process chamber 10, a sheet feeding chamber 40, a second vacuum mechanism 41 communicated with the sheet feeding chamber 40, a conveying mechanism 50, and a carrying mechanism 51 installed on the conveying mechanism 50 for carrying products such as a glass sandwich structure, wherein the sheet feeding chamber 40 is connected with the process chamber 10, and a first control valve 60 is installed between the sheet feeding chamber 40 and the process chamber 10, when the first control valve 60 is opened, the sheet feeding chamber 40 is communicated with the process chamber 10, and the carrying mechanism 51 carried by the conveying mechanism 50 enters the process chamber 10 from the sheet feeding chamber 40. The second vacuum mechanism 41 is used for vacuumizing the sheet feeding cavity 40.
Referring to fig. 4, the pressing mechanism 20 includes a high temperature-resistant bladder 21, and the bladder 21 is installed on the top of the process chamber 10. When the sandwich glass structure needs to be pressed, the air-filled bag 21 is inflated, and as the air-filled bag 21 is inflated, it presses against the top surface of the sandwich glass structure.
Of course, the pressing mechanism 20 also includes a structure for pressing the bottom surface of the glass sandwich structure. For example, the glass sandwich structure is loaded by a loading mechanism 40, and when the air bag 21 presses the top surface of the glass sandwich structure, the bottom surface is also pressed by the loading mechanism 40.
The first heating mechanism 30 includes a lifting driving member 31 and a heating member 32 installed on the lifting driving member 31, after the glass sandwich structure reaches the process chamber 10, the lifting driving member 31 jacks up the glass sandwich structure or jacks up a carrying mechanism 51 carrying the glass sandwich structure, and the heating member 32 is turned on to heat the glass sandwich structure. The reason why the first heating mechanism 30 is provided as the elevating structure is that the conveying mechanism 50 is above the first heating mechanism 30, which may affect the heating effect. After the object carrying mechanism 51 reaches the process chamber 10, the first heating mechanism 30 rises to pass over the conveying mechanism 50, and the pressing mechanism 20 presses and heats the glass sandwich structure to achieve a good heat transfer effect. The heating unit 32 may be a thermal oil heating, an infrared heating, etc., and is not limited thereto. The lifting driving member 31 may be a cylinder, a hydraulic cylinder, or the like.
The structure of the conveying mechanism 50 may be arbitrarily selected, and the conveying function may be performed. For example, the conveying mechanism 50 includes a conveying frame 52 and a plurality of conveying rollers 53 mounted on the conveying frame 52. When the conveying roller 53 rotates, the loading mechanism 51 can be driven to advance.
In an embodiment, the part of the conveying frame 52 corresponding to the process chamber 10 is provided with a telescopic mechanism 70 for controlling the extension and retraction of the conveying roller 53 in the process chamber 10, the conveying roller 53 in the process chamber 10 is in a shape of a half roller arranged oppositely, the telescopic mechanism 70 is used for controlling the extension and retraction of the conveying roller in the process chamber to increase the distance between the conveying rollers and increase the space in the middle of the process chamber 10, and when the carrying mechanism 51 reaches the process chamber 10, the first heating mechanism 30 at the bottom of the process chamber 10 rises.
For example, the telescopic mechanism 70 includes an air cylinder 71 installed at a side portion of the conveying frame 52, the conveying roller 53 is half-section shaped and connected to only one side of the conveying frame 52, the air cylinder 71 is connected to the conveying roller 53, when the air cylinder 71 is opened, the conveying roller 53 can be driven to retract in a direction away from the center of the conveying roller 53, so that the space between the conveying rollers 53 at both sides of the conveying frame 52 is increased, and at this time, the first heating mechanism 30 is raised. Of course, the telescoping mechanism 70 may also include a hydraulic cylinder or the like.
In one embodiment, the above-mentioned telescoping mechanism 70 further comprises a sensor installed in the process chamber, the sensor is used for sensing the object carrying mechanism 51 and/or the glass sandwich structure, when the object carrying mechanism 51 and/or the glass sandwich structure reaches the heating station of the process chamber 10, the cylinder 71 is activated, and the first heating mechanism 30 is lifted.
In one embodiment, the telescopic mechanism 70 may not be provided, the length of the conveying roller 53 is short, and the space between the conveying rollers 53 connected to the opposite sides of the conveying frame 52 is greater than or equal to the size of the first heating mechanism 30, so that the first heating mechanism 30 can be directly lifted from the space.
The loading mechanism 51 is mounted on a conveying roller 53 and is driven to move by the conveying mechanism 50. The loading mechanism 51 may be a loading tray, a loading box, or the like. The material can be carbon fiber or aluminum material, which can resist high temperature and transfer temperature, and transfer heat to the product such as glass sandwich structure and the like loaded on the product.
The first control valve body 60 can be directly controlled by a controller, and when the vacuum degrees in the sheet feeding cavity 40 and the process cavity 10 are the same, the first control valve body 60 is opened, so that the damage to the glass sandwich structure caused by the pressure difference between the sheet feeding cavity 40 and the process cavity 10 is avoided. An air pressure detecting component can be arranged in the wafer feeding cavity 40 and the process cavity 10 and is communicated with the controller, and when the air pressure in the wafer feeding cavity 40 is the same as that in the process cavity 10, the controller controls the first control valve body 60 to open.
Putting products such as a glass sandwich structure on the object carrying mechanism 51, loading the products on the object carrying mechanism 51 on the conveying mechanism 50, sending the object carrying mechanism 51 into the object feeding cavity 40 by the conveying mechanism 50, vacuumizing the object feeding cavity 40 for a period of time, vacuumizing the process cavity 10, opening the first control valve body 60 when the air pressure in the object feeding cavity 40 is the same as that in the process cavity 10, enabling the object carrying mechanism 51 to enter the process cavity 10, opening the pressure applying mechanism 20, applying pressure to the products such as the glass sandwich structure, and then lifting the first heating mechanism 30 to heat the products such as the glass sandwich structure on the object carrying mechanism 51, and after a period of time, completing the manufacture of vacuum glass.
The sheet feeding cavity 40 is arranged, products such as glass sandwich structures and the like are vacuumized in advance and then enter the process cavity 10 for heating, and products such as glass sandwich structures and the like which are not vacuumized can enter the sheet feeding cavity 40 for vacuumizing, so that the treatment efficiency can be accelerated.
EXAMPLE III
Different from the first embodiment and the second embodiment, the invention provides a preparation method of vacuum glass, which comprises the following steps:
s1, paving an adhesive on the edge of one surface of the first glass, forming at least one opening on the adhesive, covering the second glass on the first glass, enabling the adhesive to be positioned between the edge of the first glass and the edge of the second glass, and communicating the opening with the gap between the outside and the first glass and the second glass to form a glass sandwich structure;
s2, firstly, the glass sandwich structure is arranged in a preheating cavity, and the preheating cavity is vacuumized until a gap between the first glass and the second glass is in a vacuum state; then heating the glass sandwich structure for preheating; and then vacuumizing the process cavity to the same vacuum degree as the preheating cavity, then enabling the glass sandwich structure to enter the process cavity, applying pressure to the top surface and the bottom surface of the glass sandwich structure, heating the glass sandwich structure to a preset temperature to melt the adhesive, and keeping the temperature for a period of time. Firstly, the glass sandwich structure is vacuumized and preheated, so that the gaps of the glass sandwich structure are firstly vacuumized, the adhesive is pre-melted and then enters the process cavity to be heated, melted and pressurized again, the untreated glass sandwich structure can enter the preheating cavity to be vacuumized, and the adhesive is pre-heated and melted, so that the heating time in the process cavity can be reduced, the treatment progress can be accelerated, and the treatment efficiency is ensured.
And S3, cooling to form the vacuum glass.
Referring to fig. 7, a packaging furnace 300 according to the present embodiment can be used for packaging, which is different from the packaging furnace of the first embodiment and the second embodiment, and includes a process chamber 10, a first vacuum mechanism 12 communicated with the process chamber 10, a pressing mechanism 20 installed in the process chamber 10, a first heating mechanism 30 installed in the process chamber 10, a preheating chamber 80, a third vacuum mechanism 81 communicated with the preheating chamber 80, a conveying mechanism 50, and a carrying mechanism 51 installed on the conveying mechanism 50 for carrying products such as a glass sandwich structure, wherein the third vacuum mechanism 81 is used for vacuumizing the preheating chamber 80, the preheating chamber 80 is internally provided with a second heating mechanism 82, the second heating mechanism 82 is used for heating the carrying mechanism 51 and/or the glass sandwich structure in the preheating chamber 80, the preheating chamber 80 is connected with the process chamber 10, and a third control valve 90 is installed between the preheating chamber 80 and the process chamber 10, when the third control valve body 90 is opened, the preheating cavity 80 is communicated with the process cavity 10, and the loading mechanism 51 loaded by the conveying mechanism 50 enters the process cavity 10 from the preheating cavity 80.
The second heating mechanism 82 may be a thermal oil heating, infrared heating, or the like. Referring to fig. 9, in the present embodiment, the second heating mechanism 82 of the preheating chamber 80 adopts vertically opposite infrared heating pipes, and a heating channel is formed in the middle for the carrying mechanism 51 to pass through with products such as a glass sandwich structure.
The structure of the conveying mechanism 50 may be arbitrarily selected, and the conveying function may be performed. For example, the conveying mechanism 50 includes a conveying frame 52 and a plurality of conveying rollers 53 mounted on the conveying frame 52. When the conveying roller 53 rotates, the loading mechanism 51 can be driven to advance.
The third control valve 90 can be directly controlled by the controller, and when the vacuum degrees in the preheating chamber 80 and the process chamber 10 are the same, the third control valve 90 is opened, so that the damage to the glass sandwich structure caused by the pressure difference between the preheating chamber 80 and the process chamber 10 is avoided. An air pressure detecting component can be arranged in the preheating cavity 80 and the process cavity 10 to communicate with the controller, and when the air pressure in the preheating cavity 80 is the same as that in the process cavity 10, the controller controls the third control valve body 90 to open.
Putting products such as a glass sandwich structure on the carrying mechanism 51, loading the products on the carrying mechanism 51 on the conveying mechanism 50, conveying the carrying mechanism 51 into the preheating cavity 80 by the conveying mechanism 50, vacuumizing the preheating cavity 80 for a period of time, then starting the second heating mechanism 82 for heating, vacuumizing the process cavity 10, starting the third control valve body 90 when the preheating cavity 80 is the same as the air pressure in the process cavity 10, allowing the carrying mechanism 51 to enter the process cavity 10, starting the pressure applying mechanism 20 for applying pressure to the products such as the glass sandwich structure, then lifting the first heating mechanism 30 to heat the products such as the glass sandwich structure on the carrying mechanism 51, and after a period of time, completing the production of vacuum glass.
The structure of the conveying mechanism and the process chamber in this embodiment are the same as those in the embodiment, and are not described herein again.
Example four
Different from the first embodiment to the third embodiment, the invention provides a preparation method of vacuum glass, which comprises the following steps:
s1, paving glass powder on the edge of one surface of the first glass, forming at least one opening on the glass powder, covering the second glass on the first glass, enabling the glass powder to be located between the edge of the first glass and the edge of the second glass, and enabling the opening to be communicated with the gap between the outside and the first glass and the gap between the outside and the second glass to form a glass sandwich structure;
s20, placing the glass sandwich structure into a sheet feeding cavity, and vacuumizing the sheet feeding cavity until the vacuum degree is less than 8.0 x 10-4pa, wherein a gap between the first glass and the second glass is in a vacuum state;
s21, vacuumizing the preheating cavity to the same vacuum degree as the sheet feeding cavity, enabling the glass sandwich structure to enter the preheating cavity, and then heating the glass sandwich structure to 150-230 ℃ for preheating;
s22, vacuumizing the process cavity to the same vacuum degree as that of the preheating cavity, then enabling the glass sandwich structure to enter the process cavity, applying pressure to the top surface and the bottom surface of the glass sandwich structure, heating the glass sandwich structure to 150-230 ℃ to melt glass powder, sealing the opening of the original glass powder under the action of the pressure after the glass powder is melted, and then keeping the temperature for 15-30 min;
And S3, cooling to form the vacuum glass.
The method is the most preferred embodiment, the glass sandwich structure is firstly vacuumized in the sheet feeding cavity and then is subjected to vacuum pumping
Current glass sandwich structure gets into to preheat in the cavity and preheats, melts in advance, and next batch glass sandwich structure gets into to advance in the piece cavity and carries out the evacuation this moment, and current glass sandwich structure gets into the technology cavity after preheating and heats once more and pressurizes, and such circulation processing mode can accelerate the processing progress, improves production efficiency.
Referring to fig. 10 and 11, the embodiment may adopt a packaging furnace 400 for packaging, wherein the packaging furnace 300 includes a process chamber 10, a first vacuum mechanism 12 connected to the process chamber 10, a pressure mechanism 20 installed in the process chamber 10, a first heating mechanism 30 installed in the process chamber 10, a wafer feeding chamber 40, a second vacuum mechanism 41 connected to the wafer feeding chamber 40, a preheating chamber 80, a third vacuum mechanism 81 connected to the preheating chamber 80, a conveying mechanism 50, and a carrying mechanism 51 installed on the conveying mechanism 50 for carrying products such as a glass sandwich structure, the first vacuum mechanism 12 is used for vacuumizing the process chamber 10, the second vacuum mechanism 41 is used for vacuumizing the wafer feeding chamber 40, the third vacuum mechanism 81 is used for vacuumizing the preheating chamber 80, the first heating mechanism 30 is used for heating the products such as the carrying mechanism 51 and/or the glass sandwich structure in the process chamber 10, a second heating mechanism 82 is arranged in the preheating cavity 80, the second heating mechanism 82 is used for heating products such as a loading mechanism 51 and/or a glass sandwich structure in the preheating cavity 80, the sheet feeding cavity 40 is connected with the preheating cavity 80, the process cavity 10 is arranged between the sheet feeding cavity 40 and the preheating cavity 80, a second control valve body 101 is arranged between the sheet feeding cavity and the process cavity 10, the preheating cavity 80 is connected with the process cavity 10, a third control valve body 90 is arranged between the sheet feeding cavity 80 and the preheating cavity 10, when the second control valve body 101 is opened, the sheet feeding cavity 40 is communicated with the preheating cavity 80, and the loading mechanism 51 loaded by the conveying mechanism 50 enters the preheating cavity 80 from the; when the third control valve body 90 is opened, the preheating cavity 80 is communicated with the process cavity 10, and the carrying mechanism 51 loaded by the conveying mechanism 50 enters the process cavity 10 from the preheating cavity 80.
The first heating mechanism 30 and the second heating mechanism 82 may be a thermal oil heating structure, an infrared heating structure, and the like, and are not limited herein.
The structure of the conveying mechanism 50 may be arbitrarily selected, and the conveying function may be performed. For example, the conveying mechanism 50 includes a conveying frame 52 and a plurality of conveying rollers 53 mounted on the conveying frame 52. When the conveying roller 53 rotates, the loading mechanism 51 can be driven to advance.
The second control valve body 101 and the third control valve body 90 can be directly controlled by a controller, and when the vacuum degrees of the two cavities communicated with the second control valve body are the same, the two cavities are opened, so that the damage to the glass sandwich structure caused by the pressure difference between the two cavities is avoided. An air pressure detection component can be arranged in the cavity to communicate with the controller, and when the air pressures in the two cavities are the same, the controller controls the valve body to be opened.
By adopting the packaging furnace 400 of the embodiment, products such as the glass sandwich structure and the like can enter the sheet feeding cavity 40 to be vacuumized firstly, then enter the preheating cavity 80 to be preheated, and the next batch of products such as the glass sandwich structure and the like can enter the sheet feeding cavity 40 at the moment, so that the whole processing progress is faster and the preparation efficiency is higher.
In this embodiment, the process chamber 10 is provided with a cooling station, the cooling station is provided with a cooling mechanism, and after the heating of the product such as the glass sandwich structure in the process chamber 10 is completed, the product is conveyed by the conveying mechanism 50 to the cooling station for cooling, and then the product is taken out of the process chamber 10.
The structure of the conveying mechanism and the process chamber in this embodiment are the same as those in the embodiment, and are not described herein again.
EXAMPLE five
Referring to fig. 10 and 11, the packaging furnace according to the first embodiment may further include a sheet discharging cavity 102, a fourth vacuum mechanism 103 communicating with the sheet discharging cavity 102, a conveying mechanism 50, and an object carrying mechanism 51 mounted on the conveying mechanism 50 for carrying a product, wherein the sheet discharging cavity 102 is connected to the process cavity 10, a fourth control valve 104 is mounted between the sheet discharging cavity 102 and the process cavity 10, when the fourth control valve 104 is opened, the process cavity 10 is communicated with the sheet discharging cavity 102, and the object carrying mechanism 51 carried by the conveying mechanism 50 carries a product such as a glass sandwich structure and the like to enter the sheet discharging cavity 102 from the process cavity 10. Similarly, when the vacuum degree of the process chamber 10 is the same as that of the wafer discharging chamber 102, the fourth control valve 104 is opened. The sheet outlet cavity 102 is arranged, the manufactured vacuum glass enters the sheet outlet cavity 102 to be cooled, and products such as unfinished glass sandwich structures and the like enter the process cavity 10 to be heated, so that the treatment efficiency can be improved. A
The structure of the sheet outlet cavity 102 is the same as or similar to that of the sheet inlet cavity 40, so that the purposes of vacuumizing and conveying products by matching with a conveying frame can be achieved.
The product may be cooled in the process chamber 10 and then cooled in the sheet outlet chamber 102, or may be cooled in the process chamber 10 after heating.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The preparation method of the vacuum glass is characterized by comprising the following steps:
s1, paving an adhesive on the edge of one surface of the first glass, forming at least one opening on the adhesive, covering the second glass on the first glass, enabling the adhesive to be located between the edge of the first glass and the edge of the second glass, and enabling the opening to be communicated with the gap between the outside and the first glass and the second glass to form a glass sandwich structure;
s2, placing the glass sandwich structure into a closed cavity, and vacuumizing the closed cavity until the gap between the first glass and the second glass is in a vacuum state; applying pressure to the top and bottom surfaces of the glass sandwich structure; heating the glass sandwich structure to a preset temperature to melt the adhesive, and keeping the temperature for a period of time;
And S3, cooling to form the vacuum glass.
2. The vacuum glass manufacturing method according to claim 1, wherein the step S2 is specifically: the closed cavity comprises a wafer feeding cavity and a process cavity; firstly, the glass sandwich structure is arranged in a sheet feeding cavity, and the sheet feeding cavity is vacuumized until the gap between the first glass and the second glass is in a vacuum state; and then vacuumizing the process cavity to the same vacuum degree as the sheet feeding cavity, then enabling the glass sandwich structure to enter the process cavity, applying pressure to the top surface and the bottom surface of the glass sandwich structure, heating the glass sandwich structure to a preset temperature to melt the adhesive, and keeping the temperature for a period of time.
3. The vacuum glass manufacturing method according to claim 1, wherein the step S2 is specifically: firstly, the glass sandwich structure is arranged in a preheating cavity, and the preheating cavity is vacuumized until the gap between the first glass and the second glass is in a vacuum state; then heating the glass sandwich structure for preheating; and then vacuumizing the process cavity to the same vacuum degree as the preheating cavity, then enabling the glass sandwich structure to enter the process cavity, applying pressure to the top surface and the bottom surface of the glass sandwich structure, heating the glass sandwich structure to a preset temperature to melt the adhesive, and keeping the temperature for a period of time.
4. The vacuum glass manufacturing method according to claim 1, wherein the step S2 is specifically: firstly, the glass sandwich structure is arranged in a sheet feeding cavity, and the sheet feeding cavity is vacuumized until the gap between the first glass and the second glass is in a vacuum state; vacuumizing the preheating cavity, enabling the glass sandwich structure to enter the preheating cavity, and then heating the glass sandwich structure for preheating; and then vacuumizing the process cavity to the same vacuum degree as the preheating cavity, then enabling the glass sandwich structure to enter the process cavity, applying pressure to the top surface and the bottom surface of the glass sandwich structure, heating the glass sandwich structure to a preset temperature to melt the adhesive, and keeping the temperature for a period of time.
5. According to the claimsThe method for preparing vacuum glass according to any one of claims 1 to 4, wherein the closed cavity is evacuated to a vacuum degree of less than 8.0 x 10-4pa。
6. Vacuum glass manufacturing method according to any of claims 1-4, characterised in that the binder is glass frit and the heating temperature of the glass sandwich structure is 150-230 ℃.
7. Vacuum glass production method according to any of claims 1 to 4, characterized in that the temperature is maintained for a time of 15-30 min.
8. The preparation method of the vacuum glass is characterized by comprising the following steps:
s1, paving glass powder on the edge of one surface of first glass, forming at least one opening on the glass powder, covering second glass on the first glass, enabling the glass powder to be located between the edge of the first glass and the edge of the second glass, and enabling the opening to be communicated with the outside and a gap between the first glass and the second glass to form a glass sandwich structure;
s20, placing the glass sandwich structure into a sheet feeding cavity, and vacuumizing the sheet feeding cavity until the vacuum degree is less than 8.0 x 10-4pa, the gap between the first glass and the second glass is in a vacuum state;
s21, vacuumizing a preheating cavity to the same vacuum degree as the sheet feeding cavity, enabling the glass sandwich structure to enter the preheating cavity, and then heating the glass sandwich structure to 150-230 ℃ for preheating;
s22, vacuumizing a process cavity to the same vacuum degree as that of the preheating cavity, then enabling the glass sandwich structure to enter the process cavity, applying pressure to the top surface and the bottom surface of the glass sandwich structure, and heating the glass sandwich structure to 150-230 ℃ to melt the glass powder, wherein the temperature is kept for 15-30 min;
And S3, cooling to form the vacuum glass.
9. The method for preparing vacuum glass according to claim 8, wherein the process chamber comprises a heating station and a cooling station, and the step S3 is performed at the cooling station of the process chamber.
10. The vacuum glass manufacturing method according to claim 8, wherein the step S3 is specifically: and vacuumizing the sheet outlet cavity to the same vacuum degree as the process cavity, and then cooling the glass sandwich structure in the sheet outlet cavity to form the vacuum glass.
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| CN201910343386.9A CN111847904A (en) | 2019-04-26 | 2019-04-26 | Preparation method of vacuum glass |
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| CN1907895A (en) * | 2005-08-02 | 2007-02-07 | 王世忠 | Vacuum welding furnace for producing building vacuum glass plate |
| CN101148313A (en) * | 2006-09-20 | 2008-03-26 | 黄家军 | One-step forming vacuum glass and its manufacturing method and device |
| CN102241473A (en) * | 2010-05-12 | 2011-11-16 | 王世忠 | Production method and equipment of toughened vacuum glass |
| CN106277729A (en) * | 2015-05-15 | 2017-01-04 | 戴长虹 | The continuous way of toughened vacuum glass produces stove |
| CN109415253A (en) * | 2017-10-25 | 2019-03-01 | 深圳孔雀科技开发有限公司 | A kind of method for sealing of planar vacuum glass |
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| CN1907895A (en) * | 2005-08-02 | 2007-02-07 | 王世忠 | Vacuum welding furnace for producing building vacuum glass plate |
| CN101148313A (en) * | 2006-09-20 | 2008-03-26 | 黄家军 | One-step forming vacuum glass and its manufacturing method and device |
| CN102241473A (en) * | 2010-05-12 | 2011-11-16 | 王世忠 | Production method and equipment of toughened vacuum glass |
| CN106277729A (en) * | 2015-05-15 | 2017-01-04 | 戴长虹 | The continuous way of toughened vacuum glass produces stove |
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Application publication date: 20201030 |