CN115636574A - Processing method of special-shaped curved glass - Google Patents
Processing method of special-shaped curved glass Download PDFInfo
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- CN115636574A CN115636574A CN202211400268.5A CN202211400268A CN115636574A CN 115636574 A CN115636574 A CN 115636574A CN 202211400268 A CN202211400268 A CN 202211400268A CN 115636574 A CN115636574 A CN 115636574A
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- 239000011521 glass Substances 0.000 title claims abstract description 186
- 238000003672 processing method Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 238000004140 cleaning Methods 0.000 claims abstract description 17
- 238000007688 edging Methods 0.000 claims abstract description 16
- 238000010030 laminating Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 27
- 238000000227 grinding Methods 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 23
- 238000010304 firing Methods 0.000 claims description 22
- 238000005452 bending Methods 0.000 claims description 18
- 239000005340 laminated glass Substances 0.000 claims description 18
- 239000011229 interlayer Substances 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 239000010410 layer Substances 0.000 claims description 13
- 238000013003 hot bending Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000005496 tempering Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000002390 adhesive tape Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 5
- 239000001307 helium Substances 0.000 claims description 5
- 229910052734 helium Inorganic materials 0.000 claims description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 239000004744 fabric Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 206010066054 Dysmorphism Diseases 0.000 description 2
- 238000013075 data extraction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention specifically discloses a processing method of special-shaped curved glass, which comprises the following processing steps: s1, modeling and extracting data; s2, manufacturing a special-shaped curved surface steel mold; s3, slicing glass; s4, edging the original sheet; s5, glass is bent and tempered; s6, cleaning glass; and S7, laminating the glass. The processing method of the special-shaped curved glass provided by the invention provides a new possibility for processing the special-shaped curved glass curtain wall, is simple and convenient to operate, ensures that the formed glass product has high quality, better meets the requirements and standards of construction sites, and has good popularization prospect.
Description
Technical Field
The invention relates to the field of glass processing, in particular to a processing method of special-shaped curved glass.
Background
In some public buildings, in order to create landmark buildings and make the distinctive design, streamline lines, single curved surfaces, double curved surfaces and even multiple curved surfaces are usually adopted for design combination, so as to represent more beautiful, more curved and more representative buildings. In particular to a special-shaped curved surface glass curtain wall in a special-shaped building, because the special-shaped curved surface glass curtain wall not only puts forward higher requirements and standards for construction, but also puts forward higher requirements and standards for processing special-shaped curved surface glass.
The special-shaped curved glass is not square like common glass and has a simple structure, so that the coordinate point, the blanking size and the processing size are easy to determine. And also can not use the conventional hot-bending mould to carry on the molding, and because the dysmorphism also increases glass and piece and PVB construction degree of difficulty in the process of piece mixing, how to guarantee the smooth processing of dysmorphism curved surface curtain wall glass so, satisfy the site operation demand, become the problem that the solution is badly needed.
Disclosure of Invention
Based on the method, the invention provides the method for processing the special-shaped curved glass, and the method reduces the construction difficulty in the forming and laminating process of the special-shaped curved glass and ensures the quality of the curved glass curtain wall.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a processing method of special-shaped curved glass, which comprises the following processing steps:
s1, modeling and extracting data: establishing a 3D model by using BIM modeling software, and extracting data such as glass processing blanking, processing size, number, positioning coordinates and the like;
s2, manufacturing a special-shaped curved surface steel die: determining the blanking size of glass by using a grid type space model, bending and forming a steel pipe according to the curvature of the transverse lines of the grid during manufacturing, placing a curved steel pipe at intervals of 100mm, and splicing into a special-shaped curved steel mould according to the curvature of the vertical lines of the grid;
s3, slicing glass: converting the three-dimensional coordinate data extracted in the step S1 into plane coordinate data, and cutting the original sheet according to a conventional common glass processing method;
s4, edging the original sheet: edging the raw sheet by using an edging machine, wherein the grinding amount is controlled to be less than 2.5mm when the glass thickness is less than 8mm, and less than 1.5mm when the glass thickness is less than 10-19mm; controlling the feeding speed: the speed is less than 2.5m when the glass thickness is less than 8mm, and the speed is less than 1.5m when the glass thickness is less than 10 to 19mm;
s5, glass hot bending and tempering: heating the glass original sheet to 700 ℃ by using heating equipment for softening, and pressing by using a male mold and a female mold;
s6, cleaning glass: wiping off foreign matters on the surface of the glass in a manual cleaning mode;
s7, glass sheet combination: vacuum clamping the laminated sheet, vacuum bagging, firing in a kettle, cooling and exhausting to obtain the glass finished product.
The processing method of the special-shaped curved glass provided by the invention has the specific processing steps of optionally spraying and painting colored glaze.
Further, the special-shaped curved surface steel mold in the step S2 is divided into a male mold and a female mold; and the sizes of the male die and the female die are reserved with the size allowance of the glass hot bending tempering resilience, the deviation of the curved surface is +/-2.5 mm, and the deviation of the external size is +/-3 mm.
Further, the manual cleaning mode in the step S6 is to remove the foreign matters on the glass surface by bonding through an adhesive roller.
Further, the manual cleaning manner in step S6 is to wipe off foreign matters on the surface of the glass by using absolute ethyl alcohol.
Further, the vacuum laminating sheet in the step S7 includes: vacuumizing by using equipment, combining two pieces of glass and a PVB film placed in an interlayer under the pressure of 10KG, stretch-bending the aluminum lattice bars by using a stretch-bending machine, and filling helium after hollowing.
Further, the water content of the PVB film is less than 0.2%; the storage environment temperature of the PVB film is 22-28 ℃, and the humidity is less than 28%.
Further, the vacuum bagging and pot firing in the step S7 includes: wrapping a layer of lining cloth at the edge of the glass after the laminating is finished, wrapping a layer of felt cloth outside the lining cloth, fixing the lining cloth by using a high-temperature adhesive tape to prevent the lining cloth from falling off, then putting the bent laminated glass into a high-temperature resistant vacuum bag provided with an air nozzle, pre-vacuumizing, putting the laminated glass into an autoclave after the pre-vacuumizing is finished, placing the laminated glass with a gap larger than 100mm, and putting the laminated glass into the autoclave for firing.
Further, the pre-vacuumizing duration is more than 30min, and the vacuum pressure is-0.03 MPa per square meter.
Further, the burning temperature in the burning process is 135-145 ℃, the pressure is 12.5-13 bar, and the burning time is 90-120min.
Further, the cooling the exhaust gas in the step S7 includes: and after firing, cooling the kettle at a cooling rate of more than or equal to 3.3 ℃/min, and exhausting when the temperature in the kettle is less than 45 ℃ to obtain a glass finished product.
Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:
(1) The invention provides a processing method of the special-shaped curved glass, and also provides a manufacturing step of a special-shaped curved steel die, so that the deviation of the curved surface formed by firing the glass is within +/-2.5 mm, the deviation of the external dimension is within +/-3 mm, and the product quality of the laminated glass can be met to the maximum extent.
(2) According to the processing method of the special-shaped curved glass, provided by the invention, in the vacuum laminating process, the glass product is uniformly heated, and can be rapidly cooled after firing is finished, so that the uneven transmittance caused by uneven heating is prevented.
(3) According to the processing method of the special-shaped curved glass provided by the invention, in the exhaust process, the cooling rate is kept to be more than or equal to 3.3 ℃/min, the temperature is less than 45 ℃, the transmittance of a glass product is reduced due to too high temperature and too early exhaust, the haze of the product is increased, and the product quality is influenced.
(3) The processing method of the special-shaped curved glass provided by the invention is simple and convenient to operate, and the formed glass product has high quality, better meets the requirements and standards of construction sites, and has good popularization prospect.
Drawings
FIG. 1 is a flow chart of an embodiment of the present invention;
fig. 2 is a flow chart of an embodiment of the present invention.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be illustrative of the present invention and are not intended to limit the scope of the invention. One skilled in the art can ascertain the essential characteristics of this invention, and without departing from the spirit and scope thereof, can make various changes and modifications of the invention to adapt it to various usages and conditions.
A processing method of special-shaped curved glass comprises the following processing steps:
s1, modeling and extracting data: establishing a 3D model by using BIM modeling software, and extracting data such as glass processing blanking, processing size, quantity, positioning coordinates and the like;
s2, manufacturing a special-shaped curved surface steel die: determining the blanking size of glass by using a grid type space model, bending and forming a steel pipe according to the curvature of the transverse lines of the grid during manufacturing, placing a curved steel pipe at intervals of 100mm, and splicing into a special-shaped curved steel mould according to the curvature of the vertical lines of the grid;
s3, slicing glass: converting the three-dimensional coordinate data extracted in the step S1 into plane coordinate data, and cutting the original sheet according to a conventional common glass processing method;
s4, edging the original sheet: edging the raw sheet by using an edging machine, wherein the grinding amount is controlled to be less than 2.5mm when the glass thickness is less than 8mm, and less than 1.5mm when the glass thickness is less than 10-19mm; controlling the feeding speed: the speed is less than 2.5m when the glass thickness is less than 8mm, and the speed is less than 1.5m when the glass thickness is less than 10 to 19mm;
s5, glass hot bending and tempering: heating the glass original sheet to 700 ℃ by using heating equipment for softening, and pressing by using a male mold and a female mold;
s6, cleaning glass: wiping off foreign matters on the surface of the glass in a manual cleaning mode;
s7, glass sheet combination: vacuum clamping the laminated sheet, vacuum bagging, firing in a kettle, cooling and exhausting to obtain the glass finished product.
The processing method of the special-shaped curved glass provided by the invention further comprises the optional step of spraying and painting colored glaze.
Further, the special-shaped curved surface steel mold in the step S2 is divided into a male mold and a female mold; and the sizes of the male die and the female die are reserved with the size allowance of the glass hot bending tempering resilience, the deviation of the curved surface is +/-2.5 mm, and the deviation of the external size is +/-3 mm.
Further, the manual cleaning mode in the step S6 is to remove the foreign matters on the glass surface by bonding through an adhesive roller.
Further, the manual cleaning manner in step S6 is to wipe off foreign matters on the surface of the glass by using absolute ethyl alcohol.
Further, the vacuum laminating sheet in the step S7 includes: vacuumizing by using equipment, combining two pieces of glass and a PVB film placed in an interlayer under the pressure of 10KG, stretch-bending the aluminum lattice bars by using a stretch-bending machine, and filling helium after hollowing.
Further, the water content of the PVB film is less than 0.2%; the storage environment temperature of the PVB film is 22-28 ℃, and the humidity is less than 28%.
Further, the vacuum bagging and pot firing in the step S7 includes: wrapping a layer of plectrum cloth on the edge of the glass after the laminating is finished, wrapping a layer of felt cloth outside the plectrum cloth, fixing the plectrum cloth by using a high-temperature adhesive tape to prevent the plectrum cloth from falling off, then putting the bent laminated glass into a high-temperature resistant vacuum bag provided with an air nozzle, pre-vacuumizing, putting the laminated glass into a high-pressure kettle after the pre-vacuumizing is finished, and placing the laminated glass into the high-pressure kettle with the placing gap larger than 100mm, and then firing the laminated glass in the kettle.
Further, the duration of the pre-vacuumizing is more than 30min, and the vacuum pressure is-0.03 MPa per square meter.
Further, the burning temperature in the burning process in the kettle is 135-145 ℃, the pressure is 12.5-13 bar, and the burning time is 90-120min.
Further, the cooling the exhaust gas in the step S7 includes: and after firing, cooling the kettle at a cooling rate of more than or equal to 3.3 ℃/min, and exhausting when the temperature in the kettle is less than 45 ℃ to obtain a glass finished product.
EXAMPLE 1 Forming of glass with irregular curved surface
S1, modeling and extracting data: according to the construction design drawing of the special-shaped curved glass, a 3D model is established on a computer by utilizing BIM modeling software, data such as glass processing blanking, processing size, quantity, positioning coordinates and the like are extracted, data extraction is carried out on a main steel structure frame through a BIM technology, and a hyperboloid model is established. Guiding the glass plate into rhinoceros software through a Revit parameterized irregular curved surface glass model, extracting a series of spatial positioning parameters such as the warping value and the size of the glass plate by adopting GH plug-in units to form a processing list of each curved surface glass, and submitting the processing list to a processing plant;
s2, manufacturing a special-shaped curved surface steel die: the method is characterized in that the blanking size of glass is determined by using a grid type space model, a steel pipe is bent and formed according to the curvature of the transverse line of a grid during manufacturing, a curved steel pipe is placed at intervals of 100mm and spliced into a special-shaped curved steel mould according to the curvature of the vertical line of the grid, the resilience size allowance of glass in the firing process is reserved, the curved surface deviation of the glass is guaranteed to be within +/-2.5 mm, the external dimension deviation is within +/-3 mm, the mould is divided into a male mould and a female mould, the product quality of laminated glass can be met to the maximum extent, the quality of a bent interlayer is directly determined by the goodness of fit of the model, and even the later service life of a bent interlayer product is influenced.
S3, slicing glass: and (3) converting the three-dimensional coordinate data extracted by the 3D model established by BIM in the step (S1) into plane coordinate data, cutting the original sheet according to a conventional common glass processing method, and edging the original sheet after the original sheet is cut.
S4, edging the original sheet: the edge grinding machine is a JH-3000 type medium-sized edge grinding machine mechanically developed and produced by Sichuan Jintai hongwei glass;
before use, the grinding wheel of the edge grinding machine is checked to determine whether the grinding wheel is loose, the degree of wear and whether the circulating water is clean, and after routine check is carried out, the edge grinding machine is preheated and started to carry out trial grinding.
After trial grinding, carrying out original sheet edging treatment on the glass original sheet by using an edging machine, wherein the feeding speed of the glass original sheet is controlled to be 2.5m, and the grinding amount is controlled to be 2.5mm; the grinding amount refers to the amount of glass lost when cutting.
S5, glass hot bending and tempering: heating the glass sheet to 700 ℃ by using heating equipment for softening, pressing by using a male mold and a female mold, scanning by using a 3D scanner after molding to check whether the glass sheet conforms to a design drawing, placing the glass sheet into a toughening furnace for toughening after the glass sheet is qualified, and scanning by using the 3D scanner again to detect whether the product is qualified after hot bending and toughening.
S6, cleaning glass: the method has the advantages that the qualified glass product is cleaned, foreign matters on the surface of the glass are removed in a manual cleaning mode, the glass is cleaned by using dust-free cloth and absolute ethyl alcohol, the next PVB film spreading operation can be carried out after the absolute ethyl alcohol is volatilized, the phenomenon that the ethanol partially remains in a PVB film layer to form steam bubbles is prevented, and the bonding performance of the PVB film and the glass is reduced.
S7, glass sheet combination: laminating the sheets in vacuum, taking out the PVB film, laying the PVB film and an interlayer of two pieces of glass together in a laminating device, wherein the storage environment temperature of the PVB film is 28 ℃, the humidity is 27%, and the water content of the PVB film is 0.2%;
and (3) pumping vacuum in the device by using equipment, combining the two pieces of glass and the PVB film placed in the interlayer under the pressure of 10KG, stretch-bending the aluminum lattice bars by using a stretch-bending machine, and filling helium after hollowing.
Vacuum bagging, firing in a kettle, wrapping a layer of denim at the edge of glass after laminating, wrapping a layer of felt outside the denim, fixing with high-temperature adhesive tape to prevent falling off, and placing the bent interlayer glass into a high-temperature resistant vacuum bag with an air nozzle, wherein the height of the high-temperature resistant vacuum bag is more than 3m 2 The glass is put into a high-temperature resistant vacuum bag with 2 air nozzles, and before the glass is loaded into a kettle, pre-vacuumizing is needed, and the pre-vacuumizing is long>30min, vacuum pressure-0.03 Mpa/square meter, placing the laminated glass in a high-pressure kettle after pre-pumpingIn the placing clearance>100mm to do benefit to the even circulation of thermal cycle wind in the cauldron, guarantee that the product is thermally equivalent in the autoclave, and can rapid cooling after keeping warm, prevent to be heated the inequality and form the transmittance inequality, advance the cauldron and fire, check before burning the cauldron whether the vacuum bag takes out tightly, have or not gas leakage phenomenon, if need in time handle gas leakage phenomenon, burn the cauldron after beginning, last the vacuum until opening the cauldron, temperature control is 140 ℃ in the cauldron, and the pressure is 12.5bar, fires time 100min.
Cooling and exhausting to obtain a finished glass product, cooling the kettle at a cooling rate of more than or equal to 3.3 ℃/min after firing is finished, cooling and exhausting when the temperature in the kettle is less than 45 ℃, taking out the glass, trimming to obtain a finished glass product, and selecting out unqualified products for rework.
And finally, conveying the special-shaped curved glass to a bonding frame processing factory for bonding the glass frames, previously bending the glass frames to form the special-shaped curved surfaces in a bending factory, and conveying the glass frames to a construction site after the inspection quality of the bonded frames is qualified.
Example 2 shaping and manufacturing of special-shaped curved surface colored glaze glass
S1, modeling and extracting data: according to the construction design drawing of the special-shaped curved glass, a 3D model is established on a computer by utilizing BIM modeling software, data such as glass processing blanking, processing size, quantity, positioning coordinates and the like are extracted, data extraction is carried out on a main steel structure frame through a BIM technology, and a hyperboloid model is established. Guiding the special-shaped curved glass model parameterized by Revit into Rhino software, extracting a series of spatial positioning parameters such as the warping value and the size of a glass plate by adopting GH plug-in units to form a processing list of each piece of curved glass, and submitting the processing list to a processing plant;
s2, manufacturing a special-shaped curved surface steel die: the method is characterized in that the blanking size of glass is determined by using a grid type space model, a steel pipe is bent and formed according to the curvature of the transverse line of a grid during manufacturing, a curved steel pipe is placed at intervals of 100mm and spliced into a special-shaped curved steel mould according to the curvature of the vertical line of the grid, the resilience size allowance of glass in the firing process is reserved, the curved surface deviation of the glass is guaranteed to be within +/-2.5 mm, the external dimension deviation is within +/-3 mm, the mould is divided into a male mould and a female mould, the product quality of laminated glass can be met to the maximum extent, the quality of a bent interlayer is directly determined by the goodness of fit of the model, and even the later service life of a bent interlayer product is influenced.
S3, slicing glass: and (3) converting the three-dimensional coordinate data extracted by the 3D model established by BIM in the step (S1) into plane coordinate data, cutting the original sheet according to a conventional common glass processing method, and edging the original sheet after the original sheet is cut.
S4, edging the original sheet: the edge grinding machine is a JH-3000 type medium-sized edge grinding machine which is mechanically researched and produced by Sichuan chinampane glass;
before use, the grinding wheel of the edge grinding machine is checked to determine whether the grinding wheel is loose, the degree of wear and whether the circulating water is clean, and after routine check is carried out, the edge grinding machine is preheated and started to carry out trial grinding.
After trial grinding, carrying out original sheet edge grinding treatment on the glass original sheet by using an edge grinding machine, wherein the feeding speed of the glass original sheet is controlled to be 1.5m, and the grinding amount is controlled to be 1.5mm; the grinding amount refers to the amount of glass lost when cutting.
S5, spray-painting colored glaze: the colored glaze is sprayed and painted at high temperature by adopting special equipment, the original piece of the ultra-white coated glass is divided into a surface coated with a film and a surface uncoated with a film, and the colored glaze surface is made on the surface uncoated with a film. The method comprises the steps of performing color glaze treatment on glass, then performing glass hot bending tempering, and performing a heterogeneous glass color glaze and film coating process, wherein in the process of entering a steel bending furnace, a color glaze layer and a low-e film are required to be positioned on a glass concave surface.
S6, glass hot bending and tempering: heating the glass sheet to 700 ℃ by using heating equipment for softening, pressing by using a male mold and a female mold, scanning by using a 3D scanner after molding to check whether the glass sheet conforms to a design drawing, placing the glass sheet into a toughening furnace for toughening after the glass sheet is qualified, and scanning by using the 3D scanner again to detect whether the product is qualified after hot bending and toughening.
S7, cleaning glass: the method has the advantages that the qualified glass product is cleaned, foreign matters on the surface of the glass are removed in a manual cleaning mode, the glass is cleaned by using dust-free cloth and absolute ethyl alcohol, the next PVB film laying operation can be performed after the absolute ethyl alcohol volatilizes, the ethanol is prevented from partially remaining in the PVB film layer to form steam bubbles, and the bonding performance of the PVB film and the glass is reduced.
S8, glass sheet combination: laminating the sheets in a vacuum manner, taking out the PVB film, storing the PVB film at 28 ℃, 27% of humidity and 0.2% of water content of the PVB film, laying the PVB film and an interlayer of the two pieces of glass, and putting the PVB film and the interlayer together into a laminating device
And (3) pumping the vacuum in the device by using equipment, laminating the two pieces of glass and the PVB film placed in the interlayer under the pressure of 10KG, stretch-bending the aluminum lattice bars by using a stretch-bending machine, and filling helium after hollowing.
Vacuum bagging, firing in a kettle, wrapping a layer of denim at the edge of glass after laminating, wrapping a layer of felt outside the denim, fixing with high-temperature adhesive tape to prevent falling off, and placing the bent interlayer glass into a high-temperature resistant vacuum bag with an air nozzle, wherein the height of the high-temperature resistant vacuum bag is more than 3m 2 The glass is put into a high-temperature resistant vacuum bag with 2 air nozzles, and before the glass is loaded into a kettle, pre-vacuumizing is needed, and the pre-vacuumizing is long>30min, vacuum pressure-0.03 Mpa/square meter, placing the laminated glass in a high-pressure kettle after pre-pumping, and placing gaps>100mm to do benefit to the even circulation of thermal cycle wind in the cauldron, guarantee that the product is thermally equivalent in the autoclave, and can rapid cooling after keeping warm, prevent to be heated the inequality and form the transmittance inequality, advance the cauldron and fire, check before burning the cauldron whether the vacuum bag takes out tightly, have or not gas leakage phenomenon, if need in time handle gas leakage phenomenon, burn the cauldron after beginning, last the vacuum until opening the cauldron, temperature control is 140 ℃ in the cauldron, and the pressure is 12.5bar, fires time 100min.
Cooling and exhausting to obtain a glass finished product, cooling the kettle at a cooling rate of more than or equal to 3.3 ℃/min after firing is finished, taking out the glass for trimming treatment when the temperature in the kettle is less than 45 ℃, and selecting unqualified products for reworking.
And finally, conveying the special-shaped curved glass to a bonding frame processing factory for bonding the glass frames, previously bending the glass frames to form the special-shaped curved surfaces in a bending factory, and conveying the glass frames to a construction site after the inspection quality of the bonded frames is qualified.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (10)
1. The processing method of the special-shaped curved glass is characterized by comprising the following processing steps:
s1, modeling and extracting data: establishing a 3D model by using BIM modeling software, and extracting data such as glass processing blanking, processing size, quantity, positioning coordinates and the like;
s2, manufacturing a special-shaped curved surface steel die: determining the blanking size of glass by using a grid type space model, bending and forming a steel pipe according to the curvature of the transverse lines of the grid during manufacturing, placing a curved steel pipe at intervals of 100mm, and splicing into a special-shaped curved steel mould according to the curvature of the vertical lines of the grid;
s3, slicing glass: converting the three-dimensional coordinate data extracted in the step S1 into plane coordinate data, and cutting the original sheet according to a conventional common glass processing method;
s4, edging the original sheet: edging the raw sheet by using an edging machine, wherein the grinding amount is controlled to be less than 2.5mm when the glass thickness is less than 8mm, and less than 1.5mm when the glass thickness is less than 10-19mm; controlling the feeding speed: speed < 2.5m when the glass thickness is less than 8mm, and speed < 1.5m when the glass thickness is less than 10 to 19mm;
s5, glass hot bending and tempering: heating the glass original sheet to 700 ℃ by using heating equipment for softening, and pressing by using a male mold and a female mold;
s6, cleaning glass: wiping off foreign matters on the surface of the glass in a manual cleaning mode;
s7, glass sheet combination: vacuum clamping the laminated sheet, vacuum bagging, firing in a kettle, cooling and exhausting to obtain the glass finished product.
2. The method for processing the special-shaped curved glass according to claim 1, wherein the special-shaped curved steel mold in the step S2 is divided into a male mold and a female mold; and the sizes of the male die and the female die are reserved with the size allowance of the glass hot bending tempering resilience, the deviation of the curved surface is +/-2.5 mm, and the deviation of the external size is +/-3 mm.
3. The method as claimed in claim 1, wherein the step S6 is performed by manually cleaning the glass surface by means of an adhesive roller to remove the foreign matter on the glass surface by means of adhesion.
4. The method as claimed in claim 1, wherein the step S6 is performed by manually cleaning the glass with absolute ethanol to remove foreign matter from the surface of the glass.
5. The method as claimed in claim 1, wherein the step S7 of vacuum laminating the sheets comprises: and (3) combining the two pieces of glass and the PVB film placed in the interlayer under the pressure of 10KG, stretch-bending the aluminum grid strips by using a stretch-bending machine, vacuumizing the glass cavity by using prepress equipment, and filling helium into the glass cavity.
6. The method for processing the shaped curved glass according to claim 5, wherein the water content of the PVB film is less than 0.2%; the storage environment temperature of the PVB film is 22-28 ℃, and the humidity is less than 28%.
7. The method as claimed in claim 1, wherein the step S7 of vacuum bagging and firing comprises: taking out the laminated glass after the laminating is finished, wrapping a layer of plectrum on the edge of the glass, wrapping a layer of felt outside the plectrum, fixing the plectrum by using a high-temperature adhesive tape to prevent the plectrum from falling off, then putting the bent laminated glass into a high-temperature resistant vacuum bag provided with an air nozzle, pre-vacuumizing, putting the laminated glass into a high-pressure kettle after the pre-vacuumizing is finished, putting the laminated glass with a clearance of more than 100mm, and putting the laminated glass into the kettle for firing.
8. The method for processing the glass with the specially-shaped curved surface according to claim 7, wherein the duration of the pre-vacuumizing is more than 30min, and the vacuum pressure is 0.03MPa per square meter.
9. The method as claimed in claim 7, wherein the firing temperature is 135-145 ℃, the pressure is 12.5-13 bar, and the firing time is 90-120min.
10. The method as claimed in claim 1, wherein the cooling and exhausting in step S7 comprises: and after firing, cooling the kettle at a cooling rate of more than or equal to 3.3 ℃/min, and when the temperature in the kettle is less than 45 ℃, exhausting and cooling, taking out the glass, and performing trimming treatment to obtain a glass finished product.
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| JP2004145674A (en) * | 2002-10-25 | 2004-05-20 | Nippon Sheet Glass Co Ltd | Method for designing mold surface of press bending form block |
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| WO2012028630A1 (en) * | 2010-09-03 | 2012-03-08 | Agc Glass Europe | Process for producing glazing shapes |
| KR101538120B1 (en) * | 2015-04-30 | 2015-07-29 | 대광특수유리공업(주) | Appatus and method for manufacturing curved glass |
| CN108437301A (en) * | 2018-06-12 | 2018-08-24 | 雅泰实业集团有限公司 | A kind of hyperbolic heterotype profiled sheet shaping mould and its hyperbolic moulding process |
| CN114163112A (en) * | 2021-12-25 | 2022-03-11 | 福州大学 | Digital design method of hot-press forming die for automobile rear windshield glass |
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| JP2004145674A (en) * | 2002-10-25 | 2004-05-20 | Nippon Sheet Glass Co Ltd | Method for designing mold surface of press bending form block |
| CN1931561A (en) * | 2006-09-29 | 2007-03-21 | 连云港中复连众复合材料集团有限公司 | Making process of molded curved GRP lattice |
| WO2012028630A1 (en) * | 2010-09-03 | 2012-03-08 | Agc Glass Europe | Process for producing glazing shapes |
| KR101538120B1 (en) * | 2015-04-30 | 2015-07-29 | 대광특수유리공업(주) | Appatus and method for manufacturing curved glass |
| CN108437301A (en) * | 2018-06-12 | 2018-08-24 | 雅泰实业集团有限公司 | A kind of hyperbolic heterotype profiled sheet shaping mould and its hyperbolic moulding process |
| CN114163112A (en) * | 2021-12-25 | 2022-03-11 | 福州大学 | Digital design method of hot-press forming die for automobile rear windshield glass |
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