CN110696378A - Electronic product shell and manufacturing method thereof - Google Patents
Electronic product shell and manufacturing method thereof Download PDFInfo
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- CN110696378A CN110696378A CN201910801492.7A CN201910801492A CN110696378A CN 110696378 A CN110696378 A CN 110696378A CN 201910801492 A CN201910801492 A CN 201910801492A CN 110696378 A CN110696378 A CN 110696378A
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- cover plate
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- rear cover
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000013003 hot bending Methods 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 38
- 238000003466 welding Methods 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims description 32
- 239000004417 polycarbonate Substances 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229920000515 polycarbonate Polymers 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 210000002421 cell wall Anatomy 0.000 claims description 4
- 239000000805 composite resin Substances 0.000 claims description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 238000003848 UV Light-Curing Methods 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- 238000007650 screen-printing Methods 0.000 claims description 3
- 238000010023 transfer printing Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000007731 hot pressing Methods 0.000 abstract description 6
- 239000012943 hotmelt Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 12
- 238000005034 decoration Methods 0.000 description 8
- 238000001746 injection moulding Methods 0.000 description 6
- 238000005507 spraying Methods 0.000 description 5
- 238000001723 curing Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
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- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009501 film coating Methods 0.000 description 2
- 239000007888 film coating Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
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Images
Classifications
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/70—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by moulding
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/024—Thermal pre-treatments
- B29C66/0242—Heating, or preheating, e.g. drying
-
- 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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/0009—After-treatment of articles without altering their shape; Apparatus therefor using liquids, e.g. solvents, swelling agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
- B29K2033/12—Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3431—Telephones, Earphones
- B29L2031/3437—Cellular phones
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Casings For Electric Apparatus (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention relates to an electronic product shell and a manufacturing method thereof, wherein the manufacturing method comprises the following steps: providing or manufacturing a rear cover plate and an internal bracket, and performing first hot bending on the edge of the rear cover plate to enable the rear cover plate to form an accommodating groove; and pressing the internal support in the accommodating groove, and heating to fuse the internal support and the rear cover plate into a whole. The mode of high-tension and hot-melt welding is carried out through hot bending, and only the rear cover plate and the inner support are placed in a die for hot pressing, so that the process flow is simple and easy to operate, the cost is low, and the mass production is easy.
Description
Technical Field
The invention relates to the field of electronic product shells, in particular to an electronic product shell and a manufacturing method thereof.
Background
The mobile phone structure comprises a rear cover plate, an inner support and a front cover plate. The front cover plate is glass which meets the display requirements and is generally high in transparency. The back cover plate and the internal support can be made of metal, glass, ceramics and plastics. Generally, the rear cover, the inner bracket, and the front cover are assembled after being separately processed. The integrated mobile phone structural part is formed by integrating the rear cover plate and the inner support, and only internal parts and the front display module need to be assembled, so that the mobile phone assembling procedure is simplified.
For the rear cover plate and the internal support which are made of plastic materials, the traditional mobile phone integrated structural part is manufactured by adopting a high-pressure injection molding process, namely, molten plastic is injected into a specific mold to obtain a preset product appearance. However, the process adopts a high-pressure injection molding machine, which has high cost and difficult maintenance, and for irregular structures, the design and manufacture of injection molds are complicated, and the cost is high.
Disclosure of Invention
Therefore, it is necessary to provide a method for manufacturing an electronic product housing with simple process flow, easy operation and low cost, and an electronic product housing manufactured by the method.
A manufacturing method of an electronic product shell comprises the following steps:
providing or manufacturing a rear cover plate and an internal bracket, and performing first hot bending on the edge of the rear cover plate to enable the rear cover plate to form an accommodating groove;
and pressing the inner support in the accommodating groove to integrate the inner support and the rear cover plate in a hot melting way.
In one embodiment, in the first hot bending, the side wall of the accommodating groove is perpendicular to the bottom of the accommodating groove; and performing second hot bending while the hot welding is performed so as to bend the side wall of the accommodating groove to form an inward buckling structure in a curved surface shape protruding outwards.
In one embodiment, the heat welding and the second heat bending are performed simultaneously by a molding die; forming die includes mould and lower mould, the lower mould has the shaping groove, the inside wall in shaping groove is the arcwall face, go up the mould include with shaping groove complex press section and enclose and establish the peripheral kink of press section, the kink has annular breach, annular breach with form the bending groove between the press section, the bending groove is located cell wall on the kink is the arcwall face, works as go up the mould with during the lower mould cooperation, the bending groove is located cell wall on the kink with the inside wall cooperation formation in shaping groove is used for obtaining the arcwall face of interior knot structure.
In one embodiment, the inner side wall of the molding groove and the groove bottom are in smooth transition.
In one embodiment, the internal support is formed using CNC engraving.
In one embodiment, before the first hot bending, a step of manufacturing a decorative layer on the back cover plate is further included.
In one embodiment, the decorative layer is made by at least one of UV transfer printing, coating, silk screening and vacuum lamination.
In one embodiment, before the first hot bending, the manufacturing method further comprises the step of covering a heat-resistant protective film on the outer surfaces of the decorative layer and the back cover plate.
In one embodiment, the manufacturing method further comprises the step of hardening the surface of the product.
In one embodiment, the surface hardening treatment is to coat the composite resin on the surface of the product by spraying and perform UV curing.
In one embodiment, the material of the rear cover plate is a composite material of polycarbonate and polymethyl methacrylate, and the material of the internal bracket is polycarbonate.
In one embodiment, the process temperature of the first hot bending is 150-180 ℃, and the process temperature of the hot welding is 120-180 ℃.
An electronic product shell is manufactured by the manufacturing method of any one of the embodiments.
Compared with the prior art, the electronic product shell and the manufacturing method thereof have the following beneficial effects:
the manufacturing method of the electronic product shell, which is disclosed by the invention, particularly aims at an integrated mobile phone structural member, high stretching and hot welding are carried out through hot bending, only the rear cover plate and the internal support are placed in a die for hot pressing, and the process flow is simple and easy to operate, the cost is lower, and the mass production is easy.
Drawings
Fig. 1 is a cross-sectional view of an electronic product housing manufactured by a method for manufacturing an electronic product housing according to an embodiment;
FIG. 2 is a schematic structural diagram of a hot bending mold adopted in a method for manufacturing an electronic product housing according to an embodiment;
FIG. 3 is a schematic structural diagram of a molding die adopted in a method for manufacturing an electronic product housing according to an embodiment;
fig. 4 is a partial schematic view of the molding die shown in fig. 3.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the present invention provides a method for manufacturing an electronic product housing, including the following steps:
providing or manufacturing a rear cover 11 and an inner bracket 12, and performing first hot bending on the edge of the rear cover plate 11 to enable the rear cover plate to form an accommodating groove;
the inner support 12 is pressed into the receiving groove, and the inner support 12 and the rear cover plate 11 are thermally welded together by heating, so as to form the integrated electronic product housing structure 100.
The manufacturing method of the electronic product shell, which is disclosed by the invention, particularly aims at an integrated mobile phone structural member, high stretching and hot melt welding are carried out through hot bending, only the rear cover plate and the internal support are placed in a die for hot pressing, and the process flow is simple, easy to operate and easy to produce in mass.
The traditional high-pressure injection molding process has the defects of rough product surface and insufficient decoration property. The process is used for decorating processes such as paint spraying, electroplating, silk-screen printing or spraying, special equipment is needed, the equipment cost is high, and some processes can cause environmental pollution. For products with higher requirements on glossiness and decoration, the decoration cost is very high or the product requirements cannot be met by utilizing the later decoration cost of the traditional injection molding process. The manufacturing method of the invention can use 2D plane printing, film coating, bonding and other decoration modes, and also can use 3D spraying, bonding and other decoration modes, and the decoration method is various and simple and easy to implement.
The rear cover plate and the inner support are made of plastic materials, and are lower in price, better in processability and lower in processing cost compared with glass and ceramic materials. In addition, equipment used for hot bending and hot welding operation is a hot bending machine, and compared with a high-pressure injection molding machine, the equipment is lower in cost, simpler in operation and easy to maintain.
In one embodiment, the material of the rear cover plate is a composite material of polycarbonate and polymethyl methacrylate, and the material of the internal bracket is polycarbonate. The temperature of the forming process of the first hot bending is 150-180 ℃. The process temperature of welding is 120-180 ℃, compared with the PC material temperature of injection molding process of 260-270 ℃, the temperature is much lower, and the viscosity of the raw material is higher. Therefore, the material is not easy to stick to a mould in the forming process, and the product is easy to demould.
In one embodiment, as shown in FIG. 2, the first bending is performed using a bending die 100. The bending die 100 includes a male die 110 and a female die 120. The female mold 120 has a bending cavity 122 and the male mold 110 has a pressing portion 112 that mates with the bending cavity 122. When the first bending is performed, the rear cover plate is placed on the female die 120 and covers the opening of the bending cavity 122, the heating is performed to a certain temperature, so that the rear cover plate is softened, the male die 110 is moved close to the female die 120, the rear cover plate is pressed down by the pressing portion 112, and high-tension hot bending is performed under the pressure, so that the four sides are bent to form a 90-degree right angle with the bottom surface. In this embodiment, the bending depth is 5mm to 7 mm.
In one embodiment, the bending die 100 is made of aluminum alloy or graphite.
As shown in fig. 1, in one embodiment, in the first hot bending, the sidewall of the receiving groove is perpendicular to the bottom, and the second hot bending is performed while the heat welding is performed, so as to bend the sidewall of the receiving groove to form an inward buckling structure 111 with a curved surface shape protruding outward.
In this embodiment, the process temperature of the second hot bending and the hot welding is 120 ℃ to 180 ℃.
As shown in fig. 3 and 4, in one embodiment, the thermal welding and the second thermal bending are simultaneously performed by the molding die 200. The forming mold 200 includes an upper mold 210 and a lower mold 220, the lower mold 220 has a forming groove 222, and an inner sidewall of the forming groove 222 is an arc-shaped surface protruding to an outer side of the forming groove 222. The upper mold 210 includes a press-in portion 212 matching with the forming groove 222 and a bending portion 214 surrounding the periphery of the press-in portion 212, the bending portion 214 has an annular notch, a bending groove 2142 is formed between the annular notch and the press-in portion 212, and a groove wall of the bending groove 2142 on the bending portion 212 is an arc-shaped surface. When the upper mold 210 and the lower mold 220 are matched, the groove wall of the bending groove 2142 on the bending part 212 is matched with the inner side wall of the forming groove to form an arc-shaped surface for obtaining the inner buckle structure. The inside wall of the forming groove 222 is smoothly transited to the bottom of the groove.
After the first bending, the back cover plate is cooled, and is placed in the molding groove 222 of the molding die 200, and the internal bracket is placed in the receiving groove of the back cover plate. The temperature is raised so that the back cover plate and the inner bracket are softened. The upper mold 210 is moved closer to the lower mold 220, and the pressing portion 212 of the upper mold 210 presses the inner holder against the back cover, and the portions of the back cover in contact with the inner holder are fused together by the migration of particles. Meanwhile, the bent portion 214 of the upper mold 210 presses down the side wall of the rear cover plate, so that the side wall of the rear cover plate is bent to form an inward buckling structure in a curved surface shape protruding outward.
In one embodiment, the forming mold 200 is made of aluminum alloy or graphite.
In one embodiment, the internal support is fabricated by CNC engraving using a sheet stock.
In one embodiment, before the first hot bending, the method for manufacturing the electronic product casing further comprises the step of manufacturing a decorative layer on the rear cover plate. The method for making the decorative layer may be, but is not limited to, at least one of UV transfer printing, coating, silk screening and vacuum lamination.
Further, in one embodiment, before the first hot bending, a step of covering a heat-resistant protective film on the decorative layer and the outer surface of the back cover plate is further included.
In one embodiment, the method for manufacturing the electronic product shell further comprises the step of hardening the surface of the product. In one embodiment, the surface hardening treatment is performed by coating the composite resin on the surface of the product and performing UV curing.
Furthermore, the invention also provides an electronic product shell, which is characterized by being manufactured by the manufacturing method of the electronic product shell of any embodiment.
The following describes a method for manufacturing an electronic product housing according to an embodiment of the present invention.
The method for manufacturing the electronic product shell comprises the following steps:
and step S1, decorating the rear cover plate by using a PC/PMMA composite plate with the thickness of 0.5-1 mm in a UV (ultraviolet), film coating or silk screen printing mode, so that the composite plate has gorgeous decoration effect. And covering a heat-resistant protective film on the front surface and the decorative layer of the product, and cutting the product into 2D (two-dimensional) sheet materials with specific sizes through CNC (computer numerical control) engraving so as to wait for the next step of carrying out primary hot bending.
And S2, selecting a PC plate with the thickness of 5mm-7mm to carry out CNC engraving to serve as an internal support of the integrated mobile phone structural part. And (4) carrying out CNC (computer numerical control) engraving on the PC board to form the shape required by the assembled mobile phone terminal.
Step S3, placing the rear cover plate sheet in the bending die 100 shown in fig. 2 for high-tension hot bending, heating the bending die 100 and the sheet to reduce the viscosity of the material and soften the material, and making the rear cover plate sheet fit with the bending cavity 122 under pressure to form a deep right-angle housing with four sides bent, wherein the bending depth can reach 5mm-7mm, thereby forming the accommodating groove.
Step S4, removing the decorative layer protection film of the back cover receiving groove, placing the carved inner bracket in the receiving groove of the back cover, and placing the inner bracket in the forming mold 200 shown in fig. 3. The temperature is raised so that the back cover plate and the inner bracket are softened. The upper mold 210 is moved closer to the lower mold 220, and the pressing portion 212 of the upper mold 210 presses the inner holder against the back cover, and the portions of the back cover in contact with the inner holder are fused together by the migration of particles. Meanwhile, the bending portion 214 of the upper mold 210 presses the sidewall of the rear cover plate downward, so that the sidewall of the rear cover plate is bent toward the inside of the accommodating groove to form an arc-shaped inner buckle structure.
In steps S3 and S4, 11-station hot bending machines are used, which are divided into a preheating station, a hot pressing station, and a cooling station. The mould moves in the equipment through a push rod and sequentially passes through each station of the hot bending machine at the time interval of 60-120 s. The temperature of hot bending and stretching when the die passes through the preheating station and reaches the hot pressing station is 150-160 ℃, the bending die 100 is intermittently contacted with a heating plate on a hot bending machine, and the hot bending die 100 moves in the hot bending machine at set time intervals. The heating plate on the hot bending machine of the preheating station is contacted with the die but not pressed downwards, and the heating plate on the hot pressing station is pressed downwards under a set pressure to bend the sheet stock of the rear cover plate into a right-angle side with deep right angles at the periphery. The product is taken out after the cooling station, the second step of hot bending is carried out to put the formed shell after the high tension and the inner support which is carved in advance into the die respectively to enable the shell and the inner support to be in close contact, the product passes through the hot bending machine again, the viscosity of the heated material is reduced after the product reaches the forming station through the preheating station, the parts of the rear cover plate, which are in contact with the inner support, are fused into a whole through the migration of particles, and meanwhile, the side wall of the rear cover plate is bent towards the inner side of the containing groove to form an arc-shaped inner buckling structure.
And step S5, removing the outer surface heat-resistant protective film, spraying and coating curing liquid on the outer surface of the product, wherein the curing liquid is composite resin, and carrying out UV illumination curing on the product after the curing liquid is sprayed and coated.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (13)
1. A method for manufacturing an electronic product shell is characterized by comprising the following steps:
providing or manufacturing a rear cover plate and an internal bracket, and performing first hot bending on the edge of the rear cover plate to enable the rear cover plate to form an accommodating groove;
and pressing the inner support in the accommodating groove to integrate the inner support and the rear cover plate in a hot melting way.
2. The method according to claim 1, wherein in the first hot bending, the side wall of the receiving groove is perpendicular to the bottom thereof; and performing second hot bending while the hot welding is performed so as to bend the side wall of the accommodating groove to form an inward buckling structure in a curved surface shape protruding outwards.
3. The manufacturing method according to claim 2, wherein the heat welding and the second heat bending are performed simultaneously by a molding die; forming die includes mould and lower mould, the lower mould has the shaping groove, the inside wall in shaping groove is the arcwall face, go up the mould include with shaping groove complex press section and enclose and establish the peripheral kink of press section, the kink has annular breach, annular breach with form the bending groove between the press section, the bending groove is located cell wall on the kink is the arcwall face, works as go up the mould with during the lower mould cooperation, the bending groove is located cell wall on the kink with the inside wall cooperation formation in shaping groove is used for obtaining the arcwall face of interior knot structure.
4. The method of claim 3, wherein the inside wall of the molding groove is rounded off from the bottom of the groove.
5. The method of claim 1, wherein the internal support is formed using CNC engraving.
6. The method according to any one of claims 1 to 5, further comprising a step of forming a decorative layer on the rear cover panel before the first hot bending.
7. The method of claim 6, wherein the decorative layer is formed by at least one of UV transfer printing, coating, screen printing, and vacuum lamination.
8. The method of claim 6, further comprising the step of covering the decorative layer and the outer surface of the back cover plate with a heat-resistant protective film before the first hot bending.
9. The method according to any one of claims 1 to 5, 7 and 8, further comprising a step of hardening the surface of the product.
10. The method of claim 9, wherein the surface hardening treatment is a UV curing by coating a composite resin on the surface of the product.
11. The manufacturing method of any one of claims 1 to 5, 7, 8 and 10, wherein the rear cover plate is made of a composite material of polycarbonate and polymethyl methacrylate, and the inner support is made of polycarbonate.
12. The manufacturing method of claim 11, wherein the process temperature of the first hot bending is 150 ℃ to 180 ℃, and the process temperature of the hot welding is 120 ℃ to 180 ℃.
13. An electronic product housing, characterized by being manufactured by the manufacturing method of any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910801492.7A CN110696378B (en) | 2019-08-28 | 2019-08-28 | Electronic product shell and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910801492.7A CN110696378B (en) | 2019-08-28 | 2019-08-28 | Electronic product shell and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN110696378A true CN110696378A (en) | 2020-01-17 |
| CN110696378B CN110696378B (en) | 2021-10-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206858425U (en) * | 2017-07-03 | 2018-01-09 | 蓝思科技（长沙）有限公司 | A kind of hot bending die |
| US20180035528A1 (en) * | 2016-08-01 | 2018-02-01 | Samsung Electronics Co., Ltd. | Heat dissipation apparatus and electronic device including the same |
| CN108675618A (en) * | 2018-06-06 | 2018-10-19 | 三砥新材（深圳）有限公司 | The manufacturing method of mobile terminal glass back cover |
| CN108769302A (en) * | 2018-05-11 | 2018-11-06 | Oppo广东移动通信有限公司 | Shell, electronic device and method for producing shell |
| CN209065737U (en) * | 2018-06-06 | 2019-07-05 | 三砥新材（深圳）有限公司 | The hot bending bonding die and its hot bending welder of mobile terminal glass back cover |
-
2019
- 2019-08-28 CN CN201910801492.7A patent/CN110696378B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180035528A1 (en) * | 2016-08-01 | 2018-02-01 | Samsung Electronics Co., Ltd. | Heat dissipation apparatus and electronic device including the same |
| CN206858425U (en) * | 2017-07-03 | 2018-01-09 | 蓝思科技（长沙）有限公司 | A kind of hot bending die |
| CN108769302A (en) * | 2018-05-11 | 2018-11-06 | Oppo广东移动通信有限公司 | Shell, electronic device and method for producing shell |
| CN108675618A (en) * | 2018-06-06 | 2018-10-19 | 三砥新材（深圳）有限公司 | The manufacturing method of mobile terminal glass back cover |
| CN209065737U (en) * | 2018-06-06 | 2019-07-05 | 三砥新材（深圳）有限公司 | The hot bending bonding die and its hot bending welder of mobile terminal glass back cover |
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