CN114394737B - Glass, metal fabric for forming and removing film of glass, forming die and film removing method - Google Patents
Glass, metal fabric for forming and removing film of glass, forming die and film removing method Download PDFInfo
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- CN114394737B CN114394737B CN202210130527.0A CN202210130527A CN114394737B CN 114394737 B CN114394737 B CN 114394737B CN 202210130527 A CN202210130527 A CN 202210130527A CN 114394737 B CN114394737 B CN 114394737B
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- glass
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- film
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
- C03B23/0302—Re-forming glass sheets by bending by press-bending between shaping moulds between opposing full-face shaping moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
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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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/06—Surface treatment of glass, not in the form of fibres or filaments, by coating with metals
Abstract
The invention relates to the technical field of glass film removal. The invention relates to a metal fabric for glass forming film removal, a forming die, a film removal method and glass, and the metal fabric for glass forming film removal comprises a contact protection area and a contact film removal area; the contact protection zone is in direct contact with the functional coating of the corresponding area on the glass surface without damaging the functional coating; the contact film removal region is in direct contact with the functional coating at a corresponding region on the glass surface and is capable of removing at least a portion of the functional coating. Set up contact protection district and contact and remove membrane district on metal fabric, the contact protection district can avoid the glass surface direct with the grinding apparatus contact and produce the indentation, thereby contact removes membrane district can grind the position that the membrane need be removed to the glass surface and form the broken line, and then reaches the purpose to glass membrane removal.
Description
Technical Field
The invention relates to the technical field of glass film removal, and particularly provides a metal fabric for glass forming film removal, a forming die, a film removal method and glass.
Background
Coated glasses formed by depositing a functional coating (e.g., a transparent conductive film) on a surface of a glass substrate using a Chemical Vapor Deposition (CVD) technique or a Physical Vapor Deposition (PVD) technique have been widely used in vehicles and buildings, and have an electrical heating function and/or a heat insulating function based on the good electrical conductivity and infrared-ray-reflecting property of a metal layer, a metal alloy layer or a transparent conductive oxide layer in the transparent conductive film. The coated glass has special functions of shading sun, preserving heat, insulating heat, enriching colors and the like, so the coated glass is widely applied to building doors and windows and automobile windows, but the functional coating is easy to corrode or scratch to cause function deterioration and even failure, particularly the coated glass containing a silver layer, and silver is particularly easy to oxidize in the air. In order to prevent the coated glass containing a silver layer from being oxidized in the processes of transportation, processing, use and the like after the coating is finished, the coated glass is usually subjected to edge film removal treatment.
The traditional film removing process mainly adopts processes such as grinding wheel polishing, sand blasting and the like to mechanically remove the film, is mostly applied to building glass, but the processes easily cause glass scratch or influence the appearance of the glass, and has more dust during film removing and is easily attached to the surface of a functional coating. In order to solve such problems, the prior art uses a mask or a laser to remove a film to form a film removing region on the film-coated surface of the glass. However, in both the mask and laser film removal methods, an additional film removal process is required in the glass processing process, which results in a reduction in the processing efficiency of the glass, and in both the mask and laser film removal methods, a large investment in equipment and processing costs are required, which results in an increase in the production cost of the glass.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to solve the technical problem of how to realize convenient film removal in the glass processing process and reduce the production cost.
In order to solve the above technical problems, a first technical solution adopted by the present invention is: a metal fabric for glass forming membrane removal comprises a contact protection area and a contact membrane removal area;
the contact protection zone is in direct contact with the functional coating of the corresponding area on the glass surface without damaging the functional coating;
the contact film removal region is in direct contact with the functional coating at a corresponding area on the glass surface and is capable of removing at least a portion of the functional coating.
Specifically, the contact film removing region comprises an edge film removing region, and the edge film removing region corresponds to four peripheral edge regions on the glass surface.
Specifically, the width of the edge film removing area is 0.2mm-10mm.
Specifically, the contact film-removing region further comprises an intermediate film-removing region, and the intermediate film-removing region corresponds to a communication window region on the glass surface.
Specifically, the ratio of the area of the contact protection area to the area of the glass surface is greater than or equal to 75%, and the ratio of the area of the contact film removing area to the area of the glass surface is less than 25%.
Specifically, the contact protection area comprises a first metal yarn, and the contact membrane removal area comprises a second metal yarn.
Specifically, the contact protection area is formed by weaving a first metal yarn or a first metal yarn and a glass fiber yarn, and the contact membrane removal area is formed by weaving a second metal yarn or a second metal yarn and the first metal yarn.
Specifically, the radial cross-sectional shape of the first metal yarn has no corner, and the radial cross-sectional shape of the second metal yarn has at least one convex corner.
Specifically, the weaving density of the contact membrane removing area is greater than or equal to that of the contact protection area.
The metal fabric for glass forming film removal has the beneficial effects that: set up contact protection district and contact and remove the membrane district on metal fabric, the contact protection district can avoid the glass surface directly to produce the indentation with the grinding apparatus contact, and thereby the contact removes the membrane district and can grinds the position that the membrane needs to be removed on the glass surface and form the broken line, and then reaches the purpose to glass membrane removal.
The second technical scheme adopted by the invention is as follows: a forming die for glass forming and film removing comprises an upper die and a lower die for bending and forming glass, wherein the upper die is provided with an upper forming surface, the lower die is provided with a lower forming surface, and the forming die also comprises the metal fabric for glass film removing;
the metal fabric is positioned between the upper forming surface and the lower forming surface.
Specifically, the molding device further comprises a metal fabric rack, wherein the metal fabric is fixed between the upper molding surface and the lower molding surface through the metal fabric rack and is in direct contact with the upper molding surface.
Specifically, the metal fabric is provided with a positioning line, and the positioning line is used for positioning between the metal fabric and the upper die.
The forming die for glass forming and film removing has the advantages that: when last mould and lower mould are carrying out the pressfitting shaping to glass, the metal fabric is as the intermediate level with glass contact, possess difficult pressure stand wear and tear, it is ventilative, performances such as high temperature resistant, not only can transmit the heat and the profile of going up the mould for glass, avoid going up the direct and glass surface contact of shaping surface and cause the indentation, can also grind the position that the membrane needs to be removed to the glass surface through the metal velvet layer simultaneously in order to reach the purpose of removing the membrane, and then avoided additionally to increase the membrane removal process, the glass machining efficiency is improved, and simultaneously, the production cost is reduced.
The third technical scheme adopted by the invention is as follows: a film removing method for removing a film for glass forming comprises the following steps;
placing the glass to be bent and formed between the metal fabric and the lower forming surface of the forming die for glass forming film removal;
moving the upper die and the lower die in opposite directions to bend and form the glass, and respectively and directly contacting the contact protection area and the contact film removing area of the metal fabric with the functional coating in the corresponding area on the surface of the glass;
during the glass bending forming process, the contact film removing area grinds the functional coating on the glass surface to remove at least part of the functional coating of the corresponding area.
Specifically, the time range of the contact film removing area for grinding the functional coating on the glass surface is 0.8-3.0 s.
Specifically, when the contact film removing area grinds the functional coating on the glass surface, the distance between the metal fabric and the lower forming surface is smaller than or equal to the thickness of the glass after bending forming.
Specifically, the difference between the distance between the metal fabric and the lower molding surface and the thickness of the glass after bending molding is-0.2-0 mm.
Specifically, the contact film removal region grinds the functional coating on the glass surface to remove at least 30% of the functional coating in the corresponding region.
The film removing method for glass forming film removal has the beneficial effects that: the glass film can be conveniently removed on the surface of the glass in the process of carrying out die assembly forming processing on the glass, and the production cost is reduced.
The fourth technical scheme adopted by the invention is as follows: the glass is provided with the functional coating on the surface and is prepared by the film removing method for glass forming film removal.
The glass has the beneficial effects that: the functional coating which is needed to be removed at the part of the glass surface in the glass forming process is ground to form a grinding surface with a broken line, so that the production process of the glass is simplified, the production efficiency is improved, and the production cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a forming mold for glass forming film removal according to an embodiment of the present invention;
FIG. 2 is a top view of a forming mold for glass forming film removal in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural view of a metal fabric according to an embodiment of the present invention;
FIG. 4 is a schematic view of a first glass according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a second glass according to an embodiment of the present invention;
FIG. 6 is a radial cross-sectional view of a second metal yarn in accordance with an embodiment of the present invention;
description of reference numerals:
1. a metal fabric; 11. a contact protection region; 12. a contact membrane removal area; 121. a border membrane removing area; 122. a middle membrane removing area; 2. an upper die; 21. an upper molding surface; 3. a lower die; 31. a lower molding surface; 4. a metal fabric frame; 5. glass; 51. and a film removing area.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 3, a metal fabric 1 for glass forming membrane removal of the present invention includes a contact protection area 11 and a contact membrane removal area 12;
the contact protection zone 11 is in direct contact with the functional coating of the corresponding area on the surface of the glass 5 without damaging the functional coating;
the contact film removal zone 12 is in direct contact with the functional coating of the corresponding area on the surface of the glass 5 and is capable of removing at least part of said functional coating.
The metal fabric 1 has certain flexibility, and can be tightly attached to the surface of a forming mold and the surface of the glass 5 in the process of forming the glass 5, so that the surface of the glass 5 cannot be directly contacted with the surface of the mold to generate indentations in the process of forming the glass 5. In addition, the contact film removing area 12 on the metal fabric 1 can grind the position of the surface of the glass 5 needing film removal so as to form a broken line, thereby achieving the purpose of film removal of the glass 5.
Further, the contact film removal region 12 includes an edge film removal region 121, and the edge film removal region 121 corresponds to a four-peripheral edge region on the surface of the glass 5.
The edge film-removing region 121 is specifically a film-removing region disposed along an edge of the surface of the glass 5, in a preferred embodiment, the edge film-removing region 121 corresponds to a peripheral region on the surface of the glass 5 and forms a closed ring-shaped structure, and in some embodiments, it is not excluded that the edge film-removing region 121 is disposed intermittently.
Since the position of the edge film removing region 121 is set according to the position of the peripheral region of the glass 5, and in order to avoid the oxidation of the functional coating caused by the contact of the edge of the functional coating on the surface of the glass 5 with air, water, etc., when the functional coating is touched, the edge of the functional coating is not used as the starting position of the film removing, so that a circle of the functional coating remains on the outermost edge of the glass 5, the remaining functional coating and the main functional coating on the surface of the glass 5 are separated from each other by the film removing line formed by the film removing, and when the remaining functional coating is oxidized, a circle of the sealing structure provided around the main functional coating is spontaneously formed, so as to further prevent the main functional coating on the surface of the glass 5 from being oxidized, in the embodiment shown in fig. 4 or 5, the position 1 to 3mm (including 1mm and 3 mm) from the edge film removing region 121 from the edge of the glass 5 is suitable as the starting point of the edge film removing region of the glass 5, and the preferred edge film removing region 121 is 2mm from the starting point of the edge of the glass 5.
Further, the width of the edge film-removing region 121 is 0.2mm to 10mm.
Wherein, the width of the edge film removing region 121 corresponds to the width of the film removing line formed after the functional coating on the surface of the glass 5 is removed, the width of the edge film removing region 121 may be, specifically, 0.2mm, 0.3mm, 1mm, 1.5mm, 2mm, 3mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., and in some preferred embodiments, the width of the metal velvet layer is further limited within the range of 0.3-6 mm, which can make the width of the film removing line on the surface of the glass 5 more suitable.
Further, the contact film removing region 12 further includes a middle film removing region 122, and the middle film removing region 122 corresponds to a communication window region on the surface of the glass 5.
The specific shape and position of the middle film-removing region 122 further include the position of a communication window region on the surface of the glass 5, where film removal is required, and the middle film-removing region 122 may be communicated with the edge film-removing region 121, or may be separated from the edge film-removing region 121. The communication window on the surface of the glass 5 refers to a region where the functional coating in the corresponding region on the surface of the glass 5 is not shielded from transmission of optical signals or electromagnetic signals after film removal, and in some embodiments, the communication window may be specifically a camera window, a laser radar window, a rain sensor window, or the like.
Further, the ratio of the area of the contact protection region 11 to the area of the surface of the glass 5 is greater than or equal to 75%, and the ratio of the area of the contact film removing region 12 to the area of the surface of the glass 5 is less than 25%.
The area ratio of the contact protection region 11 to the contact film removal region 12 may be: the area of the contact protection region accounts for 75% of the area of the surface of the glass 5, and the area of the contact film removing region 12 accounts for 25% of the area of the surface of the glass 5; the area of the contact protection region accounts for 80% of the area of the surface of the glass 5, and the area of the contact film removing region 12 accounts for 20% of the area of the surface of the glass 5; the area of the contact protection region accounts for 85% of the area of the surface of the glass 5, and the area of the contact film removing region 12 accounts for 15% of the area of the surface of the glass 5; the area of the contact protection region accounts for 90% of the area of the surface of the glass 5, and the area of the contact film removing region 12 accounts for 10% of the area of the surface of the glass 5; the area of the contact protection area accounts for 95% of the area of the surface of the glass 5, and the area of the contact film removing area 12 accounts for 5% of the area of the surface of the glass 5; the area of the touch protection region accounts for 99% of the area of the surface of the glass 5, and the area of the touch film removing region 12 accounts for 1% of the area of the surface of the glass 5.
Further, the contact protection region 11 includes a first metal yarn, and the contact membrane removal region 12 includes a second metal yarn.
Further, the contact protection area 11 is formed by weaving a first metal yarn or a first metal yarn and a glass fiber yarn, and the contact membrane removal area 12 is formed by weaving a second metal yarn or a second metal yarn and a first metal yarn.
Further, the radial cross-sectional shape of the first metal yarn has no corner, and the radial cross-sectional shape of the second metal yarn has at least one convex corner.
In a preferred embodiment, the first metal yarn is formed by spinning, weaving, cleaning, and inspecting metal fibers made of metal materials such as lead, copper, aluminum, and stainless steel, and the stainless steel fibers are formed by drawing a stainless steel wire rod, wherein the stainless steel wire rod is preferably made of 316 stainless steel. In order to avoid damage to the functional coating except for the film area 51 when the metal fabric 1 contacts the surface of the glass 5, the radial cross-sectional shape of the first metal yarn does not have any corner, and in some embodiments, the radial cross-sectional shape of the first metal yarn may be circular, oval or other irregular shapes with arc transition edges.
Since the metal fiber has good bending resistance and toughness, the metal fabric 1 woven by the first metal yarn has excellent mechanical properties and corrosion resistance, and the metal fabric 1 also has excellent heat conductivity and deformation capability similar to that of a conventional fabric, and can not only adapt to and adhere to the surface of the glass 5 forming mold, but also efficiently transfer the heat of the mold to the surface of the glass 5 during the glass 5 forming process.
The second metal yarns may be woven together by a knitting process to form a contact membrane removing area 12, and then the edges of the contact membrane removing area 12 and the contact protection area 11 are woven to form the metal fabric 1, or the second metal yarns may be woven directly in a partial area of the contact protection area 11 woven by the first metal yarns to form the contact membrane removing area 12, and the second metal yarns and the first metal yarns may be made of the same metal material and by the same manufacturing process, and the second metal yarns are different from the first metal yarns in that, in order to enable the contact membrane removing area 12 to grind the functional coating on the surface of the glass 5 for the purpose of membrane removal, the radial cross-sectional shape of the second metal yarns has at least one convex edge angle, and in some embodiments, the radial cross-sectional shape of the second metal yarns may be specifically a triangle, a prism or another shape with convex edge angles, and in the embodiment shown in fig. 6, the radial cross-sectional shape of the second metal yarns has 8 convex edge angles.
Further, the weaving density of the contact film removing region 12 is greater than or equal to that of the contact protection region 11. This enables the contact film removing region 12 to have a greater frictional strength when it comes into contact with the surface of the glass 5 and the film is removed, thereby achieving a better film removing effect.
Referring to fig. 1, the forming mold for glass forming and film removing of the present invention comprises an upper mold 2 and a lower mold 3 for bending and forming glass 5, wherein the upper mold 2 has an upper forming surface 21, the lower mold 3 has a lower forming surface 31, and the forming mold further comprises the metal fabric 1 for glass film removing;
the metal fabric 1 is located between the upper forming surface 21 and the lower forming surface 31.
In one embodiment, the upper mold 2 is a solid male mold with a bottom end protruding towards a direction close to the lower mold 3, the bottom end surface of the upper mold 2 is an upper molding surface 21, the lower mold 3 is a solid female mold with a top end recessed towards a direction far away from the upper mold 2, the top end surface of the lower mold 3 is a lower molding surface 31, the protruding radian of the upper molding surface 21 is consistent with the recessed radian of the lower molding surface 31, and the metal fabric 1 is located between the upper molding surface 21 and the lower molding surface 31. When the glass 5 is molded by using a molding die, the glass 5 is placed between the metal fabric 1 and the lower molding surface 31, and after the upper die 2 approaches the lower die 3, the metal fabric 1 will adhere to the upper molding surface 21, so that the profile of the upper molding surface 21 is transferred to the surface of the glass 5 through the metal fabric 1, and the glass 5 is extruded by the upper molding surface 21 and the lower molding surface 31 to form an arc shape consistent with the radian of the upper molding surface 21 and the lower molding surface 31, and thus the glass can be used as a front windshield, a rear windshield or the like of a vehicle.
In one embodiment, the upper mold 2 is a solid male mold with a bottom end protruding toward a direction close to the lower mold 3, the bottom end surface of the upper mold 2 is an upper molding surface 21, the lower mold 3 is a hollow female mold frame, the top end surface of the lower mold 3 is an annular lower molding surface 31, and the metal fabric 1 is located between the upper molding surface 21 and the lower molding surface 31. When the glass 5 is molded by using a molding die, the glass 5 is placed between the metal fabric 1 and the lower molding surface 31, the lower molding surface 31 of the lower die 3 only supports the peripheral edge of the glass 5, and after the upper die 2 approaches the lower die 3, the metal fabric 1 is attached to the upper molding surface 21, so that the molded surface of the upper molding surface 21 is transferred to the surface of the glass 5 through the metal fabric 1, and the glass 5 is extruded by the upper molding surface 21 and forms an arc shape consistent with the arc shape of the upper molding surface 21 under the combined action of the self weight of the glass 5.
In one embodiment, the upper mold 2 is a hollow convex mold frame, the bottom end surface of the upper mold 2 is an annular upper molding surface 21, the lower mold 3 is a hollow concave mold frame, the top end surface of the lower mold 3 is an annular lower molding surface 31, and the metal fabric 1 is located between the upper molding surface 21 and the lower molding surface 31. When the glass 5 is molded by using a molding die, the glass 5 is placed between the metal fabric 1 and the lower molding surface 31, only the peripheral edge of the glass 5 is fixed and supported by the upper die 2 and the lower die 3, and the contact film removing area 12 of the metal fabric 1 is fixed on the surface of the glass 5 through the upper molding surface 21, so that the contact film removing area 12 can be in contact with the glass 5 for film removal, and meanwhile, the glass 5 is subjected to the action of self weight in a hot melting state to cause the middle part to be sunken downwards to form an arc.
In one embodiment, the upper mold 2 is a hollow convex mold frame, the bottom end surface of the upper mold 2 is an annular upper molding surface 21, the lower mold 3 is a solid concave mold with the top end recessed in a direction away from the upper mold 2, the top end surface of the lower mold 3 is a lower molding surface 31, and the metal fabric 1 is located between the upper molding surface 21 and the lower molding surface 31. When the forming die is used for forming the glass 5, the glass 5 is placed between the metal fabric 1 and the lower forming surface 31, the upper die 2 extrudes and fixes the peripheral edge of the glass 5, the contact film removing area 12 of the metal fabric 1 is fixed on the surface of the glass 5 through the upper forming surface 21, so that the contact film removing area 12 can be in contact with the glass 5 for film removal, and meanwhile, the glass 5 can be subjected to the action of self weight under the hot melting state to cause the middle part to be sunken downwards until forming an arc shape attached to the lower forming surface 31.
When the glass 5 with the functional coating film is bent and formed through a forming die, the film-coated surface of the glass 5 is in contact with the metal fabric 1, the metal fabric 1 is applied to an intermediate layer of the forming die in contact with the glass 5 when the glass 5 is formed and is used as a covering of the bottom end of the upper die 2 in the production process of the bent glass 5, the metal fabric 1 is used as a flexible carrier fabric, and when the upper die 2 is a solid convex die, the metal fabric can be used for transferring heat and an upper forming surface 21 at the bottom end of the upper die 2 to the glass 5, and has the properties of difficult compression, wear resistance, air permeability, high temperature resistance and the like. The contact film removing area 12 on the metal fabric 1 has the capability of cutting the functional coating on the surface of the glass 5, when the upper die 2 and the lower die 3 are closed, no matter whether the upper die 2 is a solid convex die, the contact film removing area 12 on the metal fabric 1 can be extruded on the surface of the glass 5 by the upper die 2, and the functional coating of the film removing area 51 corresponding to the surface of the glass 5 is relatively displaced and scraped and cut, so that the functional coating of the film removing area 51 corresponding to the surface of the glass 5 is ground to form discrete grinding broken lines, and further, the purpose of removing the film in the forming process of the glass 5 is achieved.
Further, a metal fabric rack 4 is included, and the metal fabric 1 is fixed between the upper forming surface 21 and the lower forming surface 31 by the metal fabric rack 4 and is in direct contact with the upper forming surface 21.
Furthermore, a positioning line is arranged on the metal fabric 1 and used for positioning between the metal fabric 1 and the upper die 2.
The positioning lines on the metal fabric 1 can enable the metal fabric 1 and the upper die 2 to have a good positioning effect, so that the metal fabric 1 can be smoothly installed on the upper die 2.
As shown in fig. 1 and 2, in some embodiments, the metal fabric frame 4 is annular and located outside the outer wall of the upper mold 2, the metal fabric frame 4 is fixedly connected to the outer wall of the upper mold 2, four sides of the metal fabric 1 are fixed to the frame of the metal fabric frame 4, and the central portion of the metal fabric 1 is directly attached to the upper molding surface 21 of the upper mold 2.
The invention relates to a film removing method for glass forming film removal, which comprises the following steps;
placing the glass 5 to be bent and formed between the metal fabric 1 and the lower forming surface 31 of the forming die for glass forming film removal as described above;
moving the upper die 2 and the lower die 3 in opposite directions to bend and form the glass 5, and respectively enabling the contact protection area 11 and the contact membrane removal area 12 of the metal fabric 1 to be in direct contact with the functional coating of the corresponding area on the surface of the glass 5;
during the bending of the glass 5, the contact film removing region 12 grinds the functional coating on the surface of the glass 5 to remove at least part of the functional coating in the corresponding region.
Further, the time period for grinding the functional coating on the surface of the glass 5 by the contact film removing area 12 is 0.8-3.0 s.
Wherein the duration of the grinding has an effect on the area of the film removed, in some embodiments the duration of the grinding is 0.8s, in some embodiments the duration of the grinding is 1.2s, in some embodiments the duration of the grinding is 1.6s, in some embodiments the duration of the grinding is 3.0s.
Further, when the contact film removing region 12 grinds the functional coating on the surface of the glass 5, the distance between the metal fabric 1 and the lower molding surface 31 is less than or equal to the thickness of the bent and molded glass 5.
Further, the difference between the distance between the metal fabric 1 and the lower molding surface 31 and the thickness of the glass 5 after bending molding is-0.2 to 0mm.
After the upper die 2 and the lower die 3 are closed, the distance between the metal fabric 1 and the lower molding surface 31 is at most equal to the thickness of the glass 5, so that the arc formed after the glass 5 is pressed is consistent with the radian of the upper molding surface 21 or the lower molding surface 31, in some embodiments, if the thickness of the glass 5 is D, and the distance between the metal fabric 1 and the lower molding surface 31 after the closing is D, the value range of the distance D is D-0.2 (mm) or more and D (mm) or less, and in a preferred embodiment, the value of D is D-0.1 (mm).
Further, the contact film removal region 12 grinds the functional coating on the surface of the glass 5 to remove at least 30% of the functional coating of the corresponding region.
Wherein, when the removal amount of the functional coating on the corresponding area of the surface of the glass 5 by the contact film removing area 12 reaches 30% of the total amount of the functional coating in the corresponding area, the basic anti-oxidation effect can be achieved, and in some preferred embodiments, the removal amount of the functional coating on the corresponding area of the surface of the glass 5 by the contact film removing area 12 is in the range of 50% -90%, such as 50%, 70%, 90%, etc., so that the anti-oxidation effect of the film removing area 51 can be further improved.
Referring to fig. 4, a glass 5 according to the present invention is provided with a functional coating on a surface of the glass 5, and is manufactured by using the above film removing method for glass forming film removal, in this embodiment, the surface of the glass 5 only has a film removing region 51 disposed around the glass 5.
Wherein, starting from the position of 2mm in the direction from the edge of the glass 5 to the center of the glass 5, a circle of film removing area 51 which is arranged around the glass 5 and has the width range of 0.3-5 mm is formed, when the glass 5 is laminated, even if the functional coating positioned at the outer side of the film removing area 51 is oxidized, the oxidized range can not exceed the film removing area 51 to influence the functional coating surrounded by the film removing area 51, thus the functional coating which is actually operated can be effectively prevented from being oxidized. Simultaneously, the process of using metal fabric 1 in this application to remove the membrane to glass 5 and the fashioned process of glass 5 go on in step, consequently need not to set up extra membrane removal technology and also need not to invest in extra equipment cost, can reach high-efficient convenient and reduce cost's purpose.
Referring to fig. 5, another glass 5 of the present invention is provided with a functional coating on the surface of the glass 5, and is manufactured by using the above film removing method for glass forming film removal, in this embodiment, the surface of the glass 5 has a film removing region 51 formed by an edge region disposed around the glass 5 and a communication window region located in the middle of the glass.
The communication window area can prevent the functional coating from shielding the signal transmission of the communication equipment, so that the function of the glass 5 is greatly expanded.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (16)
1. The forming die for glass forming and film removing is characterized by comprising an upper die and a lower die for bending and forming glass, wherein the upper die is provided with an upper forming surface, the lower die is provided with a lower forming surface, and the forming die further comprises a metal fabric for glass film removing;
the metal fabric is positioned between the upper forming surface and the lower forming surface;
the metal fabric comprises a contact protection area and a contact film removing area;
the contact protection zone is in direct contact with the functional coating of the corresponding area on the glass surface without damaging the functional coating;
the contact film removal region is in direct contact with the functional coating at a corresponding region on the glass surface and is capable of removing at least a portion of the functional coating.
2. The forming die for glass forming stripping as in claim 1, wherein the contact stripping zone includes an edge stripping zone, the edge stripping zone corresponding to a four-peripheral edge region on the glass surface.
3. The forming die for glass forming film removing according to claim 2, wherein the width of the edge film removing region is 0.2mm-10mm.
4. The shaping mold for glass shaping film removal of claim 2, wherein the contact film removal region further comprises an intermediate film removal region, the intermediate film removal region corresponding to a communication window region on the glass surface.
5. The forming die for glass forming film removal according to claim 1, wherein the ratio of the area of the contact protection region to the area of the glass surface is greater than or equal to 75%, and the ratio of the area of the contact film removal region to the area of the glass surface is less than 25%.
6. The forming die for glass forming membrane removal of claim 1, wherein the contact protection zone comprises first metal yarns and the contact membrane removal zone comprises second metal yarns.
7. The forming die for glass forming membrane removal according to claim 6, wherein the contact protection zone is woven by a first metal yarn or a first metal yarn and a glass fiber yarn, and the contact membrane removal zone is woven by a second metal yarn or a second metal yarn and a first metal yarn.
8. The forming die for glass forming stripping as in claim 6, wherein the radial cross-sectional shape of the first metal yarns is free of corners and the radial cross-sectional shape of the second metal yarns is at least one convex corner.
9. The mold for glass molding membrane removal as defined in claim 1, wherein the weaving density of the contact membrane removal area is greater than or equal to the weaving density of the contact protection area.
10. The forming die for glass forming de-filming of claim 1 further comprising a metal fabric holder, wherein the metal fabric is secured between and in direct contact with the upper forming surface and the lower forming surface by the metal fabric holder.
11. The forming die for glass forming and film removing as defined in claim 1, wherein the metal fabric is provided with positioning lines for positioning between the metal fabric and the upper die.
12. A film removing method for removing a film in glass forming is characterized by comprising the following steps;
placing the glass to be bent and formed between the metal fabric and the lower forming surface of the forming die for glass forming film removal according to any one of claims 1 to 11;
moving the upper die and the lower die in opposite directions to bend and form the glass, and enabling the contact protection area and the contact membrane removal area of the metal fabric to be in direct contact with the functional coating in the corresponding area on the surface of the glass respectively;
during the glass bending forming process, the contact film removing area grinds the functional coating on the glass surface to remove at least part of the functional coating of the corresponding area.
13. The film removing method for glass forming film removal according to claim 12, wherein the contact film removing region grinds the functional coating on the glass surface for a time period ranging from 0.8s to 3.0s.
14. The film removing method for glass forming film removing according to claim 12, wherein the contact film removing region is used for grinding the functional coating on the glass surface, and the distance between the metal fabric and the lower forming surface is less than or equal to the thickness of the glass after bending forming.
15. The method as claimed in claim 14, wherein the difference between the distance between the metal fabric and the lower forming surface and the thickness of the glass after bending is-0.2-0 mm.
16. The film removal method for glass forming film removal according to claim 12, wherein the contact film removal zone abrades the functional coating on the surface of the glass to remove at least 30% of the functional coating in the corresponding zone.
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| CN202210130527.0A CN114394737B (en) | 2022-02-11 | 2022-02-11 | Glass, metal fabric for forming and removing film of glass, forming die and film removing method |
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| CN112125503A (en) * | 2020-09-02 | 2020-12-25 | 四川旭虹光电科技有限公司 | Method for hot bending and forming curved glass |
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| US7105220B2 (en) * | 2003-01-29 | 2006-09-12 | Ppg Industries Ohio, Inc. | Coated article having a sealed layered edge to impede corrosion of a coating at the edge and method of making same |
| US9744638B2 (en) * | 2013-10-18 | 2017-08-29 | Lisec Austria Gmbh | Method for decoating a glass panel |
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| US5631067A (en) * | 1992-07-01 | 1997-05-20 | N. V. Bekaert S.A. | Heterogeneous knitted fabric |
| CN1261302A (en) * | 1997-06-26 | 2000-07-26 | 刚玉机械制造联合股份公司 | Flexible abrasive body |
| EP2567945A2 (en) * | 2011-09-09 | 2013-03-13 | NV Bekaert SA | Fabrics for the production of mirrors |
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