CN110154378B - Manufacturing method of curved surface shell of 3C electronic device - Google Patents
Manufacturing method of curved surface shell of 3C electronic device Download PDFInfo
- Publication number
- CN110154378B CN110154378B CN201810146452.9A CN201810146452A CN110154378B CN 110154378 B CN110154378 B CN 110154378B CN 201810146452 A CN201810146452 A CN 201810146452A CN 110154378 B CN110154378 B CN 110154378B
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- China
- Prior art keywords
- light
- transmitting base
- base shell
- decorative film
- shell
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/0073—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor of non-flat surfaces, e.g. curved, profiled
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/0091—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor in particular atmospheres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/30—Lining or sheathing of internal surfaces using sheet or web-like material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/006—Using vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/007—Using fluid under pressure
Abstract
The invention relates to a method for manufacturing a curved surface shell of a 3C electronic device, which is mainly characterized in that a decorative film is arranged in a light-transmitting base shell with a curved arc design, the light-transmitting base shell is attached and positioned by fixed-point hot pressing, then the light-transmitting base shell is placed in a vacuum tight space, the decorative film can be tightly attached to the light-transmitting base shell, and a hydraulic environment is provided, so that the decorative film can be smoothly combined with the surface of the light-transmitting base shell in a high-pressure high-temperature liquid solvent; by the method, the patterns in the curved surface shell can be accurately aligned and can be smoothly bonded in a liquid pressure equalizing state, the phenomenon of corrugation of the curved arc part can not be generated, and the effect of improving the manufacturing yield of the curved surface shell is achieved.
Description
Technical Field
The invention relates to a method for manufacturing a curved shell of a 3C electronic device, in particular to a method for manufacturing a shell with curved surfaces and curved arc parts, which is mainly used for accurately aligning patterns in the shell and flatly bonding the patterns in a liquid pressure equalizing state without generating wrinkles at the curved arc parts.
Background
With the development of modern society and the progress of science and technology, people have higher and higher requirements for consumer electronic products (such as light, thin, small and small volume, diversified functions, textured appearance and the like). Therefore, current consumer electronic products are based on a thin and light design concept. In the case of high-end electronic products, the shell material is usually made of metal or carbon fiber composite. Both materials have high rigidity and light weight, and thus can be generally used for small-sized products (e.g., smart phones, navigation devices, etc.), medium-sized products (e.g., notebook computers, tablet computers), and large-sized products (e.g., All-in-One computers, liquid crystal televisions, etc.).
For the intelligent mobile phone, since the invention of the mobile phone, plastics are always the best choice for the shell of the mobile phone; the patterns and the character marks of the mobile phones or the electronic products are usually directly formed on the outer surface of the plastic shell, but the patterns and the character marks become blurred due to abrasion after long-time use, and the attractiveness of the electronic products is greatly influenced. Until several years ago, the concept of a metal shell was introduced to improve the texture of high-end electronic products, however, the metal shell has the advantages of wear resistance, excellent texture, good heat dissipation, thinness and the like; however, the metal can generate shielding effect on electromagnetic waves, if the metal enters an elevator, the mobile phone immediately loses signals, and the metal cover shields the mobile phone signals; these phenomena show a strong shielding effect of metal against electromagnetic waves. Therefore, in the 5G era, the metal shell is no longer favored.
In order to improve the texture of the housing, many studies have been made on the manufacturing process of the housing, such as taiwan patent publication No. I609786, which includes: providing a first glass fiber board; coating a first colloid on the first glass fiber board, wherein the material of the first colloid comprises chemical resin with a foaming function; providing a second glass fiber plate; covering the second glass fiber plate on the first colloid; and curing the first adhesive to form a buffer adhesive layer, wherein the first glass fiber board, the buffer adhesive layer and the second glass fiber board form a composite board. The first colloid is arranged between the first glass fiber board and the second glass fiber board, and is cured for a long time to form a buffering adhesive layer to be combined between the first glass fiber board and the second glass fiber board; therefore, the process has the defects of long manufacturing time and waste of cost (two glass fiber plates are needed).
Because the defects exist, namely, the design of directly sticking the film in the glass fiber board exists, but each brand of electronic goods has a local brand of LOGO, and each brand has a special LOGO position, the alignment deviation phenomenon is often generated in the film sticking process due to machine module or human problems, the LOGO position can be in the correct position, and the yield problem is derived; in addition, since most of the housing has a curved periphery, when the film is attached, the curved periphery of the housing will cause the film material to wrinkle, so that it is difficult to achieve smooth and wrinkle-free finished product, which is a major subject to be researched and developed in the industry.
The inventor inherits abundant design development and actual manufacturing experience of the related industry for many years, and particularly provides a method for manufacturing a curved surface shell of a 3C electronic device so as to achieve the purpose of better practical value.
Disclosure of Invention
The present invention is directed to a method for manufacturing a curved casing of a 3C electronic device, and more particularly, to a method for manufacturing a casing having curved surfaces and curved portions, which can align patterns inside the casing accurately and smoothly adhere to the casing in a liquid pressure-equalized state without generating wrinkles at the curved portions.
The main purpose and effect of the method for manufacturing the curved surface shell of the 3C electronic device are achieved by the following specific technical means:
the decoration film is arranged in a light-transmitting base shell with a curved arc design, the light-transmitting base shell is attached and positioned through fixed-point hot pressing, the light-transmitting base shell is placed in a vacuum tight space, the decoration film can be tightly attached to the light-transmitting base shell, a hydraulic environment is provided, and the decoration film can be smoothly combined with the surface of the light-transmitting base shell in a high-pressure high-temperature liquid solvent; by the method, the patterns in the curved surface shell can be accurately aligned and can be smoothly bonded in a liquid pressure equalizing state, the phenomenon of folding of the curved arc part can not be generated, and the effect of improving the manufacturing yield of the curved surface shell is achieved.
The preferred embodiment of the method for manufacturing the curved-surface shell of the 3C electronic device comprises the following steps:
(a) providing a fixed-point hot pressing step, arranging a decorative film in a light-transmitting base shell with a curved arc design, performing fixed-point hot pressing on the decorative film by using a hot pressing head, and attaching and positioning the decorative film in the light-transmitting base shell;
(b) providing a vacuum environment, placing the light-transmitting base shell which is fixedly attached to the decorative film in a vacuum bag, and extracting vacuum to enable the decorative film and the light-transmitting base shell to be tightly attached in the vacuum environment;
(c) and providing a hydraulic combination step, namely placing the vacuum bag in the step into a container filled with a liquid solvent, and applying the high-pressure high-temperature condition to the liquid solvent in the container to smoothly combine the decorative film on the surface of the light-transmitting base shell under the high-pressure high-temperature condition of the liquid solvent.
In the preferred embodiment of the method for manufacturing the curved-surface shell of the 3C electronic device, in the step (a), the thermal pressing head is thermally pressed at a temperature of 80 to 150 ℃ for 3 to 5 seconds.
In the preferred embodiment of the method for manufacturing the curved-surface housing of the 3C electronic device of the present invention, the high-pressure and high-temperature conditions in step (C) are 1000 to 7000psi and 60 to 150 ℃. More preferably, the operation time is 10 to 30 minutes.
In a preferred embodiment of the method for manufacturing a curved casing of a 3C electronic device according to the present invention, the light-transmissive base casing is made of glass, plastic or ceramic.
In a preferred embodiment of the method for manufacturing a curved casing of a 3C electronic device according to the present invention, the decorative film is a polyethylene terephthalate (PET) or an environmentally friendly multilayer co-extruded Polyolefin (PO) film.
From the above description, the composition and the use of the system of the present invention are clear that the present invention has the following advantages compared with the prior art:
1. according to the manufacturing method of the curved surface shell of the 3C electronic device, the decorative film can be accurately positioned in the light-transmitting base shell through the fixed-point hot pressing step, so that the film layer pattern is not deviated in alignment, and the subsequent process is more accurate and the finished whole body is more attractive.
2. According to the manufacturing method of the curved surface shell of the 3C electronic device, the decoration film which is positioned and aligned can be in a sealing state with a larger area with the light-transmitting base shell through the vacuum environment step, and the decoration film can achieve the effects of being flat and tightly attached to the light-transmitting base shell in a vacuum state.
3. According to the manufacturing method of the curved surface shell of the 3C electronic device, the decorating film and the light-transmitting base shell can be arranged in a liquid environment through a hydraulic combination step, and the decorating film can be smoothly combined with the light-transmitting base shell in a pressure-equalizing state by utilizing balanced hydraulic pressure and temperature, so that the smooth texture and the attractive appearance without wrinkles are achieved.
Drawings
FIG. 1: the steps of the invention are schematically shown.
FIG. 2: step (a) of the present invention is a schematic sectional view.
FIG. 3: step (b) of the present invention is a schematic sectional view.
FIG. 4: step (c) of the present invention is a schematic sectional view.
The reference numerals in fig. 1 to 4 have the following meanings:
(a) the method comprises the following steps Providing a fixed-point hot pressing step; (b) the method comprises the following steps Providing a vacuum environment; (c) the method comprises the following steps Providing a hydraulic combination step; 1: a light-transmissive base shell; 2: decorating a film; 3: a hot-pressing head; 4: vacuum bag; 5: a container.
Detailed Description
To make the technical content, the purpose and the efficacy achieved by the present invention more complete and clear, reference is now made to the following detailed description, taken in conjunction with the accompanying drawings, in which:
first, please refer to fig. 1 to 4, which are schematic cross-sectional views and steps of a method for manufacturing a curved casing of a 3C electronic device according to the present invention, and the method includes the following steps:
(a) providing a fixed-point hot pressing step, arranging a decorative film 2 in a light-transmitting base shell 1 with a curved arc design, performing fixed-point hot pressing on the decorative film 2 by using a hot pressing head 3, and attaching and positioning the decorative film in the light-transmitting base shell 1;
(b) providing a vacuum environment, placing the light-transmitting base shell 1 which is fixedly attached to the decorative film 2 in a vacuum bag 4, and extracting vacuum to enable the decorative film 2 and the light-transmitting base shell 1 to be tightly attached in the vacuum environment;
(c) providing a hydraulic bonding step, placing the vacuum bag 4 in the above step in a container 5 filled with a liquid solvent, and applying a high-pressure high-temperature condition to the liquid solvent in the container 5, so that the decorative film 2 is smoothly bonded to the inner surface of the light-transmitting base shell 1 under the high-pressure high-temperature condition of the liquid solvent.
Before actual manufacturing, it is described that the light-transmissive base case 1 is mainly applied to 3C electronic devices, such as a mobile phone case, a mobile device case …, and the like or peripheral goods; taking a mobile phone as an example, for example, in the same model or model, there are various color systems and patterns for consumers to choose, or each brand of electronic goods has a LOGO of its own brand, so that when these colors and LOGOs of the LOGO are displayed, the effect is achieved by a transparent base shell 1, and the transparent base shell 1 can be made of glass, plastic or ceramic. Further, the decorative film 2 can be a full-color film, a pattern film or a LOGO-labeled film …, and can be made of a polyethylene terephthalate (PET) material or an environmentally-friendly multilayer co-extruded Polyolefin (PO) material.
In actual manufacturing, please refer to fig. 1 to 4, the transparent base casing has a plurality of curved arcs and curved surfaces, as shown in the drawings, which is a mobile phone bottom casing, and has a curved arc portion around the periphery and a curved arc portion at four corners, when the decoration film is a full-color film with LOGO, the following operation steps are described:
firstly, referring to fig. 1 to 2, a fixed-point hot-pressing step is provided in step (a), in which the light-transmitting base shell 1 with a plurality of curved arcs and curved surface designs is mainly placed on a mold platform, the decoration film 2 is correspondingly placed inside the light-transmitting base shell, and according to the required corresponding position of the decoration film 2, such as the LOGO laying direction or the predetermined position of a brand, the preliminary corresponding positioning is performed, and then step (a) is performed, the hot-pressing head 3 is used for pressing down, the decoration film 2 is correspondingly subjected to fixed-point hot pressing, the hot-pressing temperature is controlled to be 80 to 150 ℃, and the hot-pressing time is about 3 to 5 seconds, so that the decoration film 2 is attached to and positioned inside the light-transmitting base shell 1 in a fixed-point manner; next, referring to fig. 1 and 3, in step (b), in order to provide a vacuum environment, the so-called vacuum environment mainly enables the transparent base shell 1 and the decoration film 2 to be tightly attached together in a vacuum extraction state, that is, the decoration film 2 located at the curved arc portion and the curved arc portion of the curve can be flatly attached by using a vacuum pressure, herein, the transparent base shell 1 with the decoration film 2 attached at a fixed point is placed in the vacuum bag 4 by using the vacuum bag 4, and vacuum is extracted by a vacuum extraction device (not shown), so that the decoration film 2 and the transparent base shell 1 can be tightly attached in the vacuum environment.
Finally, referring to fig. 1 and 4, step (c) is executed to provide a hydraulic bonding step, in which the vacuum bag 4 with the decorative film attached to the transparent base shell 1 disposed therein in step (b) is disposed in a container 5, liquid solvent (such as a hydraulic press device or a device … capable of sealing and pressurizing and heating) is injected into the container 5, the vacuum bag 4 is soaked in the liquid solvent in the container 5, and further the liquid solvent in the container 5 is applied with high pressure and high temperature conditions, the high pressure and high temperature conditions are set to be 1000-7000 psi and 60-150 deg.C, the operation time is 10-30 minutes, and the surface of the light-transmitting base shell 1 and the decorative film 2 are in a micro-melting state under the high-pressure high-temperature condition, so that the decorative film 2 can be smoothly combined with the inner surface of the light-transmitting base shell 1 under the high-pressure high-temperature condition of a liquid solvent.
From the above description, the composition and the use of the system of the present invention are clear that the present invention has the following advantages compared with the prior art:
1. according to the manufacturing method of the curved surface shell of the 3C electronic device, the decorating film can be accurately positioned in the light-transmitting base shell through the fixed-point hot pressing step, so that the film layer pattern is not deviated in alignment, and the subsequent process is more accurate and the finished whole body is more attractive.
2. According to the manufacturing method of the curved surface shell of the 3C electronic device, the decoration film which is positioned and aligned can be in a sealing state with a larger area with the light-transmitting base shell through the vacuum environment step, and the decoration film can be in a flat and tight fit with the light-transmitting base shell in a vacuum state.
3. According to the manufacturing method of the curved surface shell of the 3C electronic device, the decorating film and the light-transmitting base shell can be arranged in a liquid environment through a hydraulic combination step, and the decorating film can be smoothly combined with the light-transmitting base shell in a pressure-equalizing state by utilizing balanced hydraulic pressure and temperature, so that the smooth texture and the attractive appearance without wrinkles are achieved.
Claims (4)
1. A method for manufacturing a curved surface shell of a 3C electronic device comprises the following steps:
(a) providing a fixed-point hot pressing step, arranging a decorative film in a light-transmitting base shell with a curved arc design, performing fixed-point hot pressing on the decorative film by using a hot pressing head, and attaching and positioning the decorative film in the light-transmitting base shell;
(b) providing a vacuum environment, placing the light-transmitting base shell which is fixedly attached to the decorative film in a vacuum bag, and extracting vacuum to enable the decorative film and the light-transmitting base shell to be tightly attached in the vacuum environment;
(c) providing a hydraulic combination step, namely placing the vacuum bag in the step into a container filled with a liquid solvent, applying a high-pressure high-temperature condition to the liquid solvent in the container, and enabling the surface of the light-transmitting base shell and the decorative film to generate a micro-melting state by utilizing the high-pressure high-temperature condition, so that the decorative film is smoothly combined with the inner surface of the light-transmitting base shell under the high-pressure high-temperature condition of the liquid solvent;
wherein, the light-transmitting base shell is made of glass, plastic or ceramic;
the decorative film is a polyethylene terephthalate or multilayer co-extrusion polyolefin film.
2. The method for manufacturing a curved casing of a 3C electronic device as claimed in claim 1, wherein the thermal head is thermally pressed at a temperature of 80-150 ℃ for 3-5 seconds in step (a).
3. The method for manufacturing a curved casing of a 3C electronic device as claimed in claim 1 or 2, wherein the high pressure and high temperature conditions in step (C) are 1000 to 7000psi and 60 to 150 ℃.
4. The method for manufacturing a curved casing of a 3C electronic device as claimed in claim 3, wherein the operation time of the high pressure and high temperature condition in the step (C) is further controlled to be 10-30 minutes.
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CN201810146452.9A CN110154378B (en) | 2018-02-12 | 2018-02-12 | Manufacturing method of curved surface shell of 3C electronic device |
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CN201810146452.9A CN110154378B (en) | 2018-02-12 | 2018-02-12 | Manufacturing method of curved surface shell of 3C electronic device |
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CN110154378B true CN110154378B (en) | 2021-09-10 |
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Citations (8)
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EP0254901A2 (en) * | 1986-07-18 | 1988-02-03 | Tektronix, Inc. | Lamination method and apparatus |
CN1559318A (en) * | 2004-02-23 | 2005-01-05 | ����̷� | Method for making helment by vacuum hydraulic |
US7936273B2 (en) * | 2006-06-30 | 2011-05-03 | Fujitsu Limited | RFID tag manufacturing methods and RFID tags |
CN103052282A (en) * | 2011-10-13 | 2013-04-17 | 深圳富泰宏精密工业有限公司 | Electronic device shell and manufacturing method thereof |
CN103826827A (en) * | 2011-07-12 | 2014-05-28 | 理化科技株式会社 | Molded article coated with film |
US8763802B2 (en) * | 2010-10-19 | 2014-07-01 | Heylo Ltd | Cases for portable electronic devices |
CN106347751A (en) * | 2016-11-17 | 2017-01-25 | 惠州市龙海科技有限公司 | Multipurpose attaching machine for 3D glass curved screens |
TWI609786B (en) * | 2013-08-12 | 2018-01-01 | 緯創資通股份有限公司 | Housing manufacturing method, composite board, and housing |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201294685Y (en) * | 2008-08-27 | 2009-08-19 | 比亚迪股份有限公司 | Casing and electronic product employing the same |
TW201023716A (en) * | 2008-12-12 | 2010-06-16 | Fih Hong Kong Ltd | Housing for electronic device and method for making the same |
CN101951739A (en) * | 2009-07-10 | 2011-01-19 | 深圳富泰宏精密工业有限公司 | Shell and method for manufacturing same |
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2018
- 2018-02-12 CN CN201810146452.9A patent/CN110154378B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0254901A2 (en) * | 1986-07-18 | 1988-02-03 | Tektronix, Inc. | Lamination method and apparatus |
CN1559318A (en) * | 2004-02-23 | 2005-01-05 | ����̷� | Method for making helment by vacuum hydraulic |
US7936273B2 (en) * | 2006-06-30 | 2011-05-03 | Fujitsu Limited | RFID tag manufacturing methods and RFID tags |
US8763802B2 (en) * | 2010-10-19 | 2014-07-01 | Heylo Ltd | Cases for portable electronic devices |
CN103826827A (en) * | 2011-07-12 | 2014-05-28 | 理化科技株式会社 | Molded article coated with film |
CN103052282A (en) * | 2011-10-13 | 2013-04-17 | 深圳富泰宏精密工业有限公司 | Electronic device shell and manufacturing method thereof |
TWI609786B (en) * | 2013-08-12 | 2018-01-01 | 緯創資通股份有限公司 | Housing manufacturing method, composite board, and housing |
CN106347751A (en) * | 2016-11-17 | 2017-01-25 | 惠州市龙海科技有限公司 | Multipurpose attaching machine for 3D glass curved screens |
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Application publication date: 20190823 Assignee: Shenzhen pinjiang Industrial Design Co.,Ltd. Assignor: He Yingxin Contract record no.: X2022990000239 Denomination of invention: Manufacturing method of curved shell of 3C electronic device Granted publication date: 20210910 License type: Exclusive License Record date: 20220510 |
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