CN112492811A - Method for manufacturing housing, and electronic device - Google Patents
Method for manufacturing housing, and electronic device Download PDFInfo
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- CN112492811A CN112492811A CN202011415443.9A CN202011415443A CN112492811A CN 112492811 A CN112492811 A CN 112492811A CN 202011415443 A CN202011415443 A CN 202011415443A CN 112492811 A CN112492811 A CN 112492811A
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- Prior art keywords
- glass substrate
- hyperboloid
- polishing
- hyperboloid glass
- cover plate
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
- H05K5/0243—Mechanical details of casings for decorative purposes
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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
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
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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
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F1/00—Designs or pictures characterised by special or unusual light effects
- B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application discloses a manufacturing method of a shell, the shell and an electronic device. The manufacturing method of the shell comprises the following steps: carrying out hot-pressing treatment on the glass base material to obtain a hyperboloid glass substrate, wherein the hyperboloid glass substrate is provided with a first surface and a second surface which are opposite in the thickness direction, and four corner parts of the hyperboloid glass substrate are cambered surfaces; performing surface pretreatment on a first surface and a second surface of a hyperboloid glass substrate to obtain a hyperboloid glass cover plate, wherein the surface treatment comprises frosting treatment; polishing the cambered surfaces of the four corner parts of the hyperboloid glass cover plate and the two opposite long edge parts of the first surface and the second surface, and forming a gradient color texture layer with a first preset color on the cambered surfaces of the four corner parts and the two opposite long edge parts of the first surface and the second surface to obtain the shell. This application has formed the casing of edge part for having the gradual change effect, can satisfy the user to the high-quality outward appearance demand of electronic equipment casing.
Description
Technical Field
The application belongs to the technical field of electronic equipment manufacturing, and particularly relates to a manufacturing method of a shell, the shell and electronic equipment.
Background
In recent years, with the increasing popularity of consumer electronics, electronic products between brands compete more strongly. Meanwhile, consumers have higher and higher requirements for consumer electronics, and in addition to higher requirements for hardware specifications of the electronics, such as processors, display modules, camera modules, and the like, the consumers also pay more attention to the appearance design of the electronic devices.
Taking an external casing of an electronic device (for example, a glass cover plate, that is, a TW cover plate is used) as an example, the whole surface of the casing of an electronic product is an AG frosted surface or a local AG frosted surface, so that the casing surface of the electronic device can only present a single color, and the effect is relatively monotonous, thereby causing the appearance expressive force of the casing of the electronic device to be relatively limited, the homogeneity to be serious, and the novelty to be lacking. Therefore, the housing of the existing electronic device has difficulty in meeting the appearance requirements of consumers for high quality of electronic products.
Disclosure of Invention
The application aims to provide a shell manufacturing method, a shell and electronic equipment, and aims to solve the problem that in the prior art, the appearance of the shell is monotonous due to the fact that the color of the shell of the electronic equipment is single.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a method for manufacturing a housing, including:
carrying out hot-pressing treatment on a glass substrate to obtain a hyperboloid glass substrate, wherein the hyperboloid glass substrate is provided with a first surface and a second surface which are opposite in the thickness direction, and four corner parts of the hyperboloid glass substrate are cambered surfaces;
performing surface pretreatment on a first surface and a second surface of the hyperboloid glass substrate to obtain a hyperboloid glass cover plate, wherein the surface pretreatment comprises frosting treatment;
and polishing the cambered surfaces of the four corner parts of the hyperboloid glass cover plate and the two opposite long edge parts of the first surface and the second surface to form a gradient color texture layer with a first preset color on the cambered surfaces of the four corner parts and the two opposite long edge parts of the first surface and the second surface to obtain the shell.
In a second aspect, an embodiment of the present application provides a casing, the casing is manufactured by using the manufacturing method as described in any one of the above, the casing has a first surface and a second surface opposite to each other in a thickness direction, four corner portions of the casing are arc surfaces, and a gradient color texture layer of a first predetermined color is formed on the arc surfaces of the four corner portions of the casing and two opposite long edge portions of the first surface and the second surface.
In a third aspect, embodiments of the present application provide an electronic device including a housing obtained by using the manufacturing method described above.
In the embodiment of the application, the gradient color texture layer of the first preset color is formed on the four corner parts and two opposite long edge parts of the formed double-curved-surface glass cover plate, so that the manufactured shell presents a gradient color in appearance, and the color depth layering sense can be improved by matching the first preset color, so that the manufactured shell has rich colors and good visual effect, the whole attractiveness of the shell is promoted, and the requirement of a consumer on the high-quality appearance of an electronic product can be met.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is one of flow charts of a method of manufacturing a housing according to an embodiment of the present application;
fig. 2 is a second flowchart of a method for manufacturing a housing according to an embodiment of the present application;
fig. 3 is a schematic view of a glass structure before and after CNC processing of a manufacturing method of a housing according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
For a better understanding of the present application, embodiments of the present application are described below with reference to fig. 1 and 2.
Referring to fig. 1, an embodiment of the present application provides a manufacturing method of a housing, where the manufacturing method at least includes the following steps:
step 1, carrying out hot-pressing treatment on a glass substrate to obtain a hyperboloid glass substrate;
wherein the hyperboloid glass substrate is obtained to have a first surface and a second surface opposite in the thickness direction (i.e., the hyperboloid glass substrate has a front surface and a back surface, alternatively referred to as a concave surface or a convex surface); and simultaneously, four corner parts of the hyperboloid glass substrate are cambered surfaces, and the radian sizes of the cambered surfaces of the four corner parts of the hyperboloid glass substrate are the same.
By performing the hot pressing treatment on the glass substrate in the step 1, 3D hyperboloid glass can be obtained. The obtained 3D hyperboloid glass is used for manufacturing the shell of the electronic equipment, so that the electronic equipment can have attractive and novel appearance effects and better visual effects.
It should be noted that, the electronic device may be, for example, a smart phone, a tablet computer, a smart watch, a smart band, and other various types of electronic products, which is not limited in this application.
And 2, performing surface pretreatment on the first surface and the second surface of the hyperboloid glass substrate to obtain the hyperboloid glass cover plate, wherein the surface pretreatment comprises AG frosting treatment.
In step 2, first surface pretreatment needs to be performed on the first surface and the second surface of the hyperboloid glass substrate, and the purpose is to: and removing various surface defect problems on the two surfaces of the hyperboloid glass substrate in advance, such as removing surface defects of orange peel and microcracks on the two surfaces of the hyperboloid glass substrate.
And performing second surface pretreatment, namely AG frosting treatment, to obtain the double-curved-surface glass cover plate. And through AG sanding treatment, an AG sanding effect can be formed on the first surface and the second surface. The design can improve the hand feeling and the skid resistance of the double-curved-surface glass cover plate, and fingerprints are not easy to leave on the double-curved-surface glass cover plate, so that the double-curved-surface glass cover plate is more suitable for manufacturing a shell of electronic equipment.
And 3, carrying out SPM polishing treatment on the cambered surfaces of the four corner parts of the hyperboloid glass cover plate and the long edge parts of the first surface and the second surface which are opposite, and forming a gradient color texture layer with a first preset color on the cambered surfaces of the four corner parts and the long edge parts of the first surface and the second surface which are opposite, so as to obtain the shell.
The double-curved-surface glass cover plate itself has first and second surfaces opposed in the thickness direction before being formed into a housing, and a housing formed using the double-curved-surface glass cover plate also has first and second surfaces opposed in the thickness direction. Specifically, one of the two surfaces of the double-curved-surface glass cover plate may serve as a front surface of the housing, and the other surface may serve as a back surface (or called a reverse surface) of the housing.
When the double-curved-surface glass cover plate is manufactured into a shell of electronic equipment, the front surface of the double-curved-surface glass cover plate can be directly seen by a user, and the appearance effect of electronic products can be embodied. Wherein, the double-curved-surface glass cover plate can be covered with more than two layers of first predetermined colors on the front surface (which can be a first surface or a second surface, and the application is not limited thereto). The design of more than two layers of the first preset colors can enable the first preset colors formed on the surfaces of the hyperboloid glass cover plates to be thicker, more uniform and more opaque, and on the basis, the 3D hyperboloid glass cover plates with specific colors can be obtained.
And, by performing SPM polishing on the designated portions of the 3D hyperboloid glass cover plate with a specific color, for example, the cambered surfaces of two opposite long edge portions and four corner portions, using an SPM machine, a gradient color texture layer with a first predetermined color can be formed on the designated portions, so that the appearance of the product can present a gradient color effect.
It should be noted that the first predetermined color may be, for example, white, pink green, pink purple, rose gold, black, and other colors that are popular in electronic device housings on the market at present, and may be other rare colors, and those skilled in the art may select any one of the colors according to the preference of most consumers, and the color is not limited to the above color, and the present application does not limit the color.
The manufacturing method of the shell provided by the embodiment of the application is manufactured through a new process, especially, SPM polishing treatment is added at four corner parts and two opposite long edge parts of a formed double-curved-surface glass cover plate, the manufactured shell has a special arc edge gradual change AG effect, the shell is different from the shell with a traditional single color or AG frosted effect, the formed shell can show a gradual change AG color effect in appearance, color depth gradation can be improved by matching with a first preset color on the shell, and therefore the manufactured shell has richer colors, novel appearance and good visual effect, the overall attractiveness of the shell is further promoted, and the requirement of a consumer on the high-quality appearance of an electronic product can be met. And the manufacturing cost is low, the method is suitable for batch production, and the method has a wide application prospect.
The improvement of the embodiment of the application effectively solves the problem that the appearance of the shell is monotonous due to the single color of the shell of the electronic equipment in the prior art.
In an embodiment of the present application, step 1 may include the following steps:
And 102, cutting the glass substrate to obtain the glass substrate with a preset size and a preset shape.
That is, the glass substrate is first cut into a predetermined size and a predetermined shape, so that the cut glass substrate can be matched with the size and the shape of the electronic device, and the case manufactured in the subsequent step can be directly applied to the electronic device, which can facilitate the manufacture of the electronic device.
Step 103, referring to fig. 3, performing a first CNC processing on the four corner portions of the glass substrate 101 obtained in the step 102, and forming arc shapes on the four corner portions after the CNC processing, wherein the arc sizes of the arc surfaces of the four corner portions are the same, so as to obtain the first-stage glass substrate 102.
That is, in the step 102, a large glass substrate may be cut into small pieces of glass with corresponding sizes by blanking, and then, in the step 103, the contour of the small pieces of glass and the arc surfaces of the four corner portions are processed by a CNC (Computer Numerical Control) machine, as shown in fig. 3, after the small pieces of glass are processed by the CNC machine, the first-stage glass substrate 102 with a predetermined size and a predetermined shape can be obtained.
Specifically, in the step 103, the CNC processing can adopt a silver steel grinding wheel and a convex positioning jig which are designed by a combined tool. On one hand, the wear resistance is stronger; on the other hand, the outline and the curved surface part of the small glass can be processed and formed at one time, no tool change is needed in the midway, and the yield and the processing efficiency can be improved.
And 104, performing hot-pressing treatment on the first-stage glass base material obtained in the step 103 at a first preset temperature to obtain a hyperboloid glass substrate.
In the step 104, the first-stage glass substrate may be subjected to a hot pressing process at a first predetermined temperature by using a predetermined hot pressing mold under a uniform pressure, so that a hyperboloid glass substrate with a better molding effect may be obtained quickly.
Specifically, the first predetermined temperature may be 480 ℃ to 820 ℃.
Further, the first predetermined temperature is preferably 500 to 800 ℃.
In addition, a preferable scheme is that the glass base material in the first stage can be subjected to gradual temperature rise treatment in the hot pressing treatment process, the glass base material is sequentially heated to a softened state, and then the glass base material in the softened state is subjected to hot pressing treatment, so that the obtained hyperboloid glass substrate has a good forming effect.
Specifically, in step 104, a mold made of graphite material may be selected as the mold used in the hot pressing process, and the surface of the graphite material may be subjected to a high-precision polishing process. The hot-pressing die made of graphite material has better heat-conducting property, so that the hot-pressing forming speed is higher. Moreover, the surface of the graphite material is polished with high precision, so that the flatness and smoothness of the surface of a finished product can be ensured. In addition, because graphite material has high temperature resistance, coefficient of thermal expansion is also very little, the hot pressing mould in this application embodiment adopts graphite material, can increase of service life.
In a specific embodiment of the present application, the predetermined hot press mold includes, for example, an upper press plate and a lower press plate, a lower surface of the upper press plate forms a first arc shape corresponding to a back surface of the hyperboloid glass substrate, and an upper surface of the lower press plate forms a second arc shape corresponding to a front surface of the hyperboloid glass substrate. The upper surface of the upper pressure plate and the lower surface of the lower pressure plate are respectively provided with a heater.
When the hot pressing mold is used for hot pressing the first-stage glass substrate 102, the first-stage glass substrate 102 may be placed between an upper pressing plate and a lower pressing plate, and at this time, the first-stage glass substrate 102 still has a planar shape; then, the temperature of the first-stage glass substrate 102 is raised (preferably gradually raised) by the heater on the upper pressing plate and the heater on the lower pressing plate, so that the glass substrates are sequentially heated to a softening state; then applying pressure above the upper platen at a first predetermined temperature (e.g., 480 ℃ to 820 ℃) to cause the lower surface of the upper platen and the upper surface of the lower platen to snap together under pressure, at which time the first stage glass substrate 102 deforms; and finally, removing the upper pressing plate from the upper part of the lower pressing plate, and taking out the formed hyperboloid glass substrate.
Step 105, after completing step 104, needs to perform a cooling process on the obtained hyperboloid glass substrate.
In the step 104, the first-stage glass substrate 102 is actually subjected to a hot pressing process under a high temperature condition to obtain a double-curved-surface glass substrate, and then the obtained double-curved-surface glass substrate needs to be cooled to a room temperature condition, so that the double-curved-surface glass substrate can be further processed.
Preferably, the hyperboloid glass substrate may be gradually cooled and sequentially cooled to room temperature.
Further, the gradual temperature-up process of step 104 and the gradual cooling process of step 105 may include the following processes: the first step is heating to 480-520 ℃; secondly, heating to 540-560 ℃; thirdly, heating to 630-670 ℃; fourthly, heating to 740-760 ℃; fifth step, pressurizing at 740-760 ℃ under 18N/cm2～22N/cm2(ii) a Sixth step, heating and pressurizing at 765-775 ℃ and 28N/cm2～32N/cm2(ii) a The seventh step is heating and reducing the pressure, the temperature is 780-820 ℃, and the pressure is 18N/cm2～22N/cm2(ii) a Step eight, cooling to 740-760 ℃; ninth, cooling, wherein the temperature is 680-720 ℃; the tenth step is to cool the mixture at the temperature of 580-620 ℃; the tenth step is to cool the mixture to 540-560 ℃; and 4 steps of temperature reduction can be further included, the temperature is gradually cooled to the room temperature, and the time of each step is 85 seconds to 95 seconds.
More preferably, the temperature-increasing step 104 and the cooling step 105 may include the following steps: firstly, heating to 500 ℃; secondly, heating to 550 ℃; thirdly, heating to 650 ℃; fourthly, heating to 750 ℃; fifthly, pressurizing at 750 ℃ and under 20N/cm2(ii) a Sixth step, heating and pressurizing at 770 deg.C and 30N/cm2(ii) a Seventh step, raising temperature and reducing pressure, wherein the temperature is 800 ℃, and the pressure is 20N/cm2(ii) a Step eight, cooling to 750 ℃; ninth, cooling to 700 ℃; the tenth step is cooling, the temperature is 600 ℃; cooling to 550 ℃ in the eleventh step; the following can also comprise 4 steps of temperature reduction and gradual cooling to the room temperature, wherein the time of each step is 90 seconds.
The hyperboloid glass substrate with better forming effect can be obtained by heating, pressurizing and cooling the glass substrate put into the hot-pressing die in sequence by gradually increasing the temperature and then cooling the glass substrate.
And 106, carrying out second CNC (computerized numerical control) processing on the hyperboloid glass substrate to form a camera accommodating hole in the preset position of the hyperboloid glass substrate.
After the hyperboloid glass substrate is obtained (which may be the hyperboloid glass substrate obtained in step 106, or the hyperboloid glass substrate obtained in step 105), a hole needs to be formed in a predetermined position on the hyperboloid glass substrate, so that a camera of the electronic device can be exposed, and a user can take pictures or videos by using the camera.
Specifically, the present embodiment employs a CNC machining process to form the camera accommodating hole.
The shape and the size of the camera accommodating hole are matched with a camera of the electronic equipment.
In addition, it should be noted that the first predetermined color is covered on the area of the front surface of the hyperboloid glass substrate except the predetermined opening.
In the step 1 of the application, the hyperboloid glass substrate with a good forming effect can be obtained through a series of process treatments such as cutting, hot press forming, cooling, CNC (computer numerical control) processing and the like. This may provide good guarantees for the following further processing.
In an embodiment of the present application, the step 2 may include the steps of:
step 201, performing at least one time of SPM polishing treatment on the cambered surfaces of the four corner parts of the hyperboloid glass substrate and the two opposite long edge parts of the first surface and the second surface.
After obtaining the double-curved-surface glass substrate through step 1, it is necessary to perform SPM polishing processes on both surfaces of the double-curved-surface glass substrate. And the polishing treatment of both surfaces of the hyperboloid glass substrate is aimed at: on one hand, polishing to remove the bad appearances of scratches, imprints, orange peels, microcracks and the like on the surface of the hyperboloid glass substrate and four corner parts; in another aspect, the hyperboloid glass substrate may be adjusted in thickness to achieve a predetermined thickness value.
Wherein, in the process of polishing two surfaces of the hyperboloid glass substrate, the polishing time is reasonably regulated and controlled to achieve good polishing effect.
Specifically, the polishing time can be controlled within 5min to 10min, for example. It should be noted that, in the polishing process, the polishing time is not longer. This is because: the polishing time is long, and a large number of polishing traces are easily generated on the surface of the product, which may have a certain influence on the appearance of the product.
When the two surfaces of the hyperboloid glass substrate are polished, the method comprises the following specific steps:
and 2011, placing the hyperboloid glass substrate between the first polishing device and the second polishing device through a preset jig.
Wherein the first polishing means and the second polishing means are, for example, both cylindrical brushes.
At this time, the double-curved-surface glass substrate may be horizontally placed at a central position between the first polishing device and the second polishing device by a preset jig. And preferably, the linear distances between the hyperboloid glass substrate and the first polishing device and between the hyperboloid glass substrate and the second polishing device are both 5cm to 10 cm.
Step 2012, in the polishing process, the hyperboloid glass substrate, the first polishing device and the second polishing device may rotate simultaneously along a preset direction, and the first polishing device and the second polishing device may perform SPM polishing on the arc surfaces of the four corner portions of the hyperboloid glass substrate and the two opposite long edge portions of the first surface and the second surface together, where the polishing time may be controlled to be 5min to 10 min.
The first polishing device and the second polishing device are both cylindrical brushes, and in a working state, the first polishing device and the second polishing device can simultaneously rotate in one direction at a preset speed so as to brush the shell. The rotation direction may be clockwise or counterclockwise, and those skilled in the art can flexibly adjust the rotation direction according to actual conditions, which is not limited in the present application.
And, during the polishing, the hyperboloid glass substrate is located between the first polishing device and the second polisher, the hyperboloid glass substrate is also rotated together with the hyperboloid glass substrate, and the direction and speed of the rotation are the same as those of the first polishing device and the second polisher in the operating state. In this way, the first polishing device and the second polishing device can utilize respective brushes to fully brush the cambered surfaces of the four corner parts of the hyperboloid glass substrate and the two opposite long edge parts of the first surface and the second surface so as to achieve the purpose of polishing. In the process of polishing treatment, the time of the polishing treatment can be controlled within 5 min-10 min, for example, so that the phenomenon of over-polishing is avoided.
It is noted that the distance between the hyperboloid glass substrate and the first and second polishing devices, and the specific polishing time may be determined according to specific appearance needs.
In addition, in the embodiment of the present application, when the double curved surface glass substrate is subjected to the polishing process, the polishing process may be actually performed on a plurality of double curved surface glass substrates at the same time. Specifically, a plurality of hyperboloid glass substrates can be arranged on the preset jig in a stacking manner. Thus, a plurality of hyperboloid glass substrates can be polished simultaneously, and the production time is saved.
Step 202, performing a sweeping and grinding treatment on a first surface and a second surface of the hyperboloid glass substrate, wherein one of the first surface and the second surface is a concave surface, and the other of the first surface and the second surface is a convex surface.
Specifically, the hyperboloid glass substrate polished in step 201 is placed in a sweeping and grinding jig, a grinding disc is arranged above the sweeping and grinding jig, and the hyperboloid glass substrate is subjected to upper sweeping and lower grinding treatment by the cooperation of the grinding disc and the sweeping and grinding jig. Through right hyperboloid glass substrate sweeps and grinds the processing, can be better get rid of bad outward appearance such as fish tail, impression, orange peel, crazing crack on the hyperboloid glass substrate surface to promote hyperboloid glass substrate's appearance quality.
For the hyperboloid glass substrate, one of the first surface and the second surface is a concave surface, and then the other is a convex surface, which can be used to form the front surface and the back surface of the hyperboloid glass substrate, respectively.
And 204, performing AG frosting treatment on the concave surface of the hyperboloid glass substrate to obtain the hyperboloid glass cover plate.
Optionally, the step 204 further includes the steps of:
step a, before performing AG frosting treatment on the concave surface of the hyperboloid glass substrate, spraying protective oil on the concave surface of the hyperboloid glass substrate, so as to form a protective layer on the concave surface.
Specifically, for a hyperboloid glass substrate after being subjected to a polishing process, it is necessary to provide a protective layer on the concave surface thereof. For example, an acid-resistant protective oil may be sprayed on the concave surface of the hyperboloid glass substrate to form a protective layer. After this step is completed, the concave surface of the hyperboloid glass substrate may be subjected to AG sanding (i.e., sand etching).
Wherein, the protective layer can be a protective ink layer. The protective ink can be acid-resistant ink, and can protect the concave surface of the hyperboloid glass substrate from the sand etching solution during the sand etching treatment process.
And b, after the sand etching is finished, removing the protective layer by using an alkaline solution. That is, after the AG-frosting process is performed on the concave surface of the hyperboloid glass substrate, the protective oil removing process may be performed on the concave surface of the hyperboloid glass substrate at a second predetermined temperature.
In the step b, the acid-resistant protective oil on the concave surface of the double-curved-surface glass substrate may be neutralized with an alkaline solution to push the acid-resistant protective oil away.
Further, in the step b, the alkaline solution is a potassium hydroxide solution with a concentration of 15% -25%, the second predetermined temperature is 90 ℃, and the treatment time is 10-15 min.
In the embodiment of the present application, the step 3 is the same as the step 201. In the step 3, the double-curved-surface glass cover plate obtained in the step 2 is subjected to the SPM polishing treatment again. However, the purpose of step 3 is: the edge part of the shell forms a gradient effect.
Specifically, the step 3 may include the following steps:
301, placing the hyperboloid glass cover plate between a first polishing device and a second polishing device through a preset fixture. Wherein the first polishing means and the second polishing means are, for example, cylindrical brushes.
At this time, the double-curved-surface glass cover plate may be horizontally placed at a central position between the first polishing device and the second polishing device by a preset jig. And preferably, the linear distances between the hyperboloid glass cover plate and the first polishing device and between the hyperboloid glass cover plate and the second polishing device are both 5 cm-10 cm.
Step 302, in the polishing process, the hyperboloid glass cover plate, the first polishing device and the second polishing device may rotate simultaneously along a preset direction, and the first polishing device and the second polishing device may perform SPM polishing on the arc surfaces of the four corner portions of the hyperboloid glass cover plate and the two opposite long edge portions of the first surface and the second surface together, where the polishing time may be controlled to be 5min to 10 min.
After step 302 is completed, forming a gradient color texture layer of a first preset color on the cambered surfaces of the four corner parts of the double-curved-surface glass cover plate and the edge parts of the two opposite long sides of the first surface and the second surface.
The first polishing device and the second polishing device are both cylindrical brushes, and in a working state, the first polishing device and the second polishing device can simultaneously rotate at a preset speed in one direction, wherein the rotating direction can be clockwise or anticlockwise. During the polishing process, the hyperboloid glass cover plate is positioned between the first polishing device and the second polisher, the hyperboloid glass cover plate also rotates, and the direction and the speed of the rotation are the same as those of the first polishing device and the second polisher in the working state. In this way, the first polishing device and the second polishing device can polish the arc surfaces of the four corner parts of the hyperboloid glass cover plate and the two opposite long edge parts of the first surface and the second surface by using the respective brushes. In the process of the polishing treatment, the time of the polishing treatment is controlled to be 5 min-10 min.
It should be noted that the distance between the hyperboloid glass cover plate and the first polishing device and the second polishing device, and the specific polishing time can be determined according to specific appearance needs.
In addition, when the double-curved-surface glass cover plate is polished, a plurality of double-curved-surface glass cover plates can be polished at the same time. Specifically, a plurality of hyperboloid glass cover plates can be arranged on the preset jig in a stacking manner. This can speed up the production efficiency of the housing.
Through the polishing treatment in the step 3, the manufactured shell can have the texture of gradual change of the peripheral edge part, and the effect is more glaring.
Optionally, referring to fig. 2, the manufacturing method of the housing further includes the following step 4. And step 4, cleaning the shell formed in the step 3.
The step of cleaning treatment in the step 4 comprises the following specific steps:
step 401, washing with water for the first time.
And (4) washing the shell obtained in the step (3) by using clean water at least once.
Step 402, acid washing.
After step 401, the housing may be acid washed with an acidic cleaning solution (e.g., citric acid).
Wherein the pH value of the acidic cleaning solution can be controlled to be about 5.
And step 403, alkali washing.
After step 402, the shell may be caustic washed with a caustic wash. The acidity imparted by the acid wash in step 402 may be neutralized using an alkaline cleaning solution.
Wherein, the PH value of the alkaline cleaning liquid can be controlled to be about 9.
And step 404, cleaning with neutral cleaning solution.
And step 405, washing with water for the second time.
The shell obtained in step 404 is washed again with clean water.
It should be noted that, when the casing obtained in step 3 is cleaned, the cleaning time of each cleaning stage can be controlled to 90 seconds. The whole cleaning treatment process can be carried out at normal temperature.
Through the cleaning step, impurities such as oil stains on the surface of the manufactured shell can be removed, and the cleanliness of the shell is improved.
Optionally, referring to fig. 2, the manufacturing method of the shell further includes a step 5, where the step 5 is to perform a strengthening treatment on the shell.
The strengthening treatment specifically comprises the following steps: immersing the housing entirely within the molten salt at a third predetermined temperature.
For example, the shell obtained in step 3 or step 4 is immersed in molten salt at a temperature of 700 ℃ to 800 ℃ for strengthening treatment, and the strengthening treatment time is controlled to be 7h to 9 h.
In the application, the surface composition of the glass is changed according to the mechanism of ion diffusion, when the shell is wholly immersed into the molten salt under the high-temperature condition, sodium ions in the glass and potassium ions in the molten salt are mutually exchanged due to diffusion, so that the phenomenon of squeezing is generated, the surface of a glass material generates compressive stress, the strength can be improved, and the strength of the prepared shell can be improved. Therefore, the overall strength of the whole electronic equipment is improved, and the service life of the electronic equipment is prolonged.
In another aspect, embodiments of the present application provide a housing manufactured by the manufacturing method as described above. The casing has relative first surface and second surface in thickness direction, four corner positions of casing are the cambered surface, the cambered surface of four corner positions of casing and first surface with form the gradual change look texture layer of first predetermined colour on the two relative long limit edge positions of second surface.
The casing of this application embodiment, its both sides edge has specific arc limit gradual change AG effect, and its appearance is more novel, and visual effect is good. A new appearance design is provided in a plurality of consumer electronic products, and the requirement of consumers on the high-quality appearance of the shell of the electronic equipment can be met. Moreover, the manufacturing cost is low, the mass production can be realized, and the use and popularization value is higher. The problem that the appearance of the shell is monotonous due to the fact that the color of the shell of the electronic equipment is single in the prior art can be effectively solved.
The shell of the embodiment of the application is manufactured by the manufacturing method of the shell.
In another aspect, the present application provides an electronic device including a housing obtained by the manufacturing method described above. That is, the electronic device includes the housing as described in any of the above embodiments.
The electronic device may be, for example, a smart phone, a tablet computer, a smart watch, a smart band, or other types of electronic products, which is not limited in this application.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A method of manufacturing a housing, comprising:
carrying out hot-pressing treatment on a glass substrate to obtain a hyperboloid glass substrate, wherein the hyperboloid glass substrate is provided with a first surface and a second surface which are opposite in the thickness direction, and four corner parts of the hyperboloid glass substrate are cambered surfaces;
performing surface pretreatment on a first surface and a second surface of the hyperboloid glass substrate to obtain a hyperboloid glass cover plate, wherein the surface pretreatment comprises frosting treatment;
and polishing the cambered surfaces of the four corner parts of the hyperboloid glass cover plate and the two opposite long edge parts of the first surface and the second surface to form a gradient color texture layer with a first preset color on the cambered surfaces of the four corner parts and the two opposite long edge parts of the first surface and the second surface to obtain the shell.
2. The method for manufacturing a housing according to claim 1, wherein the step of cutting and thermocompression-treating the glass base material to obtain the double-curved-surface glass substrate comprises:
providing a glass substrate;
CNC processing is carried out on four corner parts of the glass substrate, so that arc surfaces are formed on the four corner parts, and the radian of the arc surfaces of the four corner parts of the glass substrate are the same, and the glass substrate in the first stage is obtained;
and carrying out hot-pressing treatment on the first-stage glass base material at a first preset temperature to obtain the hyperboloid glass substrate.
3. The method for manufacturing a housing according to claim 1, wherein the step of performing surface pretreatment on the first surface and the second surface of the hyperboloid glass substrate to obtain the hyperboloid glass cover plate comprises:
performing at least one SPM polishing treatment on the cambered surfaces of the four corner parts of the hyperboloid glass substrate and the two opposite long edge parts of the first surface and the second surface;
performing a sweeping and grinding process on a first surface and a second surface of the hyperboloid glass substrate, wherein one of the first surface and the second surface is a concave surface, and the other of the first surface and the second surface is a convex surface;
and performing AG frosting treatment on the concave surface of the hyperboloid glass substrate to obtain the hyperboloid glass cover plate.
4. The method for manufacturing a case according to claim 3, wherein the step of performing at least one SPM polishing process on the arc surfaces of the four corner portions of the double-curved-surface glass substrate and the two opposing long-side edge portions of the first surface and the second surface comprises:
placing the hyperboloid glass substrate between a first polishing device and a second polishing device through a preset fixture, wherein the hyperboloid glass substrate, the first polishing device and the second polishing device rotate along a preset direction at the same time, and the first polishing device and the second polishing device jointly perform SPM polishing treatment on the cambered surfaces of four corner parts of the hyperboloid glass substrate and two opposite long edge parts of the first surface and the second surface;
wherein the polishing time is controlled to be 5min to 10min,
and the linear distances between the hyperboloid glass substrate and the first polishing device and between the hyperboloid glass substrate and the second polishing device are both 5 cm-10 cm.
5. The method for manufacturing a housing according to claim 3, wherein the step of performing AG frosting on the concave surface of the hyperboloid glass substrate to obtain the hyperboloid glass cover plate further comprises:
before AG frosting treatment is carried out on the concave surface of the hyperboloid glass substrate, spraying protective oil on the concave surface of the hyperboloid glass substrate to form a protective layer on the concave surface;
and after performing AG sanding treatment on the concave surface of the hyperboloid glass substrate, performing protective oil removal treatment on the concave surface of the hyperboloid glass substrate at a second preset temperature.
6. The method of manufacturing a casing according to claim 5, wherein the protective oil is an acid-resistant ink;
and the protective oil is removed by using an alkaline solution, the second preset temperature is 90 ℃, and the treatment time is 10-15 min.
7. The method for manufacturing a casing according to claim 1, wherein the step of polishing the arc surfaces of the four corner portions of the double-curved-surface glass cover plate and the two opposite long-side edge portions of the first surface and the second surface to form a gradient-color texture layer of a first predetermined color on the arc surfaces of the four corner portions and the two opposite long-side edge portions of the first surface and the second surface to obtain the casing comprises:
placing the hyperboloid glass cover plate between a first polishing device and a second polishing device through a preset fixture, wherein the hyperboloid glass cover plate, the first polishing device and the second polishing device rotate along a preset direction at the same time, and the first polishing device and the second polishing device jointly perform at least one SPM (spin mechanical polishing) treatment on the cambered surfaces of four corner parts of the hyperboloid glass cover plate and two opposite long edge parts of the first surface and the second surface;
wherein, in the SPM polishing processing step:
the linear distances between the hyperboloid glass cover plate and the first polishing device and between the hyperboloid glass cover plate and the second polishing device are both 5 cm-10 cm,
the polishing time is controlled to be 5 min-10 min.
8. The method of manufacturing a housing according to claim 1, further comprising:
performing strengthening treatment on the shell, wherein the strengthening treatment comprises the following steps:
immersing the housing into molten salt at a third predetermined temperature,
wherein the third preset temperature is 700-800 ℃, and the strengthening treatment time is 7-9 h.
9. A case, characterized in that the case is manufactured by the manufacturing method according to any one of claims 1 to 8, the case has a first surface and a second surface opposite to each other in the thickness direction, four corner portions of the case are all arc surfaces, and the arc surfaces of the four corner portions of the case and two opposite long edge portions of the first surface and the second surface form a gradient texture layer of a first predetermined color.
10. An electronic device, characterized in that the electronic device comprises a housing obtained by the manufacturing method according to any one of claims 1 to 8.
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| CN114454658A (en) * | 2022-02-28 | 2022-05-10 | 蓝思科技（长沙）有限公司 | Single-color gradient film, preparation method thereof, cover plate, device and application |
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| CN112492811B (en) | 2022-04-22 |
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