CN107683040B - Shell manufacturing method, shell and mobile terminal - Google Patents
Shell manufacturing method, shell and mobile terminal Download PDFInfo
- Publication number
- CN107683040B CN107683040B CN201710928353.1A CN201710928353A CN107683040B CN 107683040 B CN107683040 B CN 107683040B CN 201710928353 A CN201710928353 A CN 201710928353A CN 107683040 B CN107683040 B CN 107683040B
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- China
- Prior art keywords
- housing
- shell
- manufacturing
- milling
- cavity
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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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
-
- 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
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
Abstract
The invention provides a shell manufacturing method, a shell and a mobile terminal, wherein the shell manufacturing method comprises the following steps: providing a housing base body, wherein the housing base body is provided with a first surface, a second surface arranged opposite to the first surface, an inner cavity extending from the first surface to the second surface, and an antenna slot penetrating from the second surface to the inner cavity; filling non-signal shielding materials into the antenna slot; and processing the second surface into a back curved surface. The non-signal shielding material is filled in the antenna groove, and then the second surface is processed to form an appearance surface, so that the forming quality of the appearance surface is ensured, and the manufacturing efficiency of the shell is improved.
Description
Technical Field
The invention relates to the field of electronic equipment, in particular to a shell manufacturing method, a shell and a mobile terminal.
Background
At present, in the manufacturing process of the mobile phone shell, a non-signal shielding material is mostly required to be added into the shell. In the process of the existing shell manufacturing method, after the appearance surface of the shell is processed, the non-signal shielding material is added, and then the non-signal shielding material is polished, so that the non-signal shielding material is effectively combined with the appearance surface. However, the machined appearance surface is easily damaged in the process of polishing the non-signal shielding material, so that the molding quality is poor, and the manufacturing efficiency of the shell is low.
Disclosure of Invention
The invention provides a shell manufacturing method for improving shell manufacturing efficiency, a shell and a mobile terminal.
The invention provides a shell manufacturing method, which comprises the following steps:
providing a housing base body, wherein the housing base body is provided with a first surface, a second surface arranged opposite to the first surface, an inner cavity extending from the first surface to the second surface, and an antenna slot penetrating from the second surface to the inner cavity;
filling non-signal shielding materials into the antenna slot;
and processing the second surface into a back curved surface.
The invention also provides a shell, wherein the shell is manufactured by adopting the shell manufacturing method.
The invention also provides a mobile terminal, wherein the mobile terminal comprises the shell.
According to the shell manufacturing method provided by the invention, the non-signal shielding material is filled in the antenna groove, and then the second surface is processed to form the appearance surface, so that the forming quality of the appearance surface is ensured, and the shell manufacturing efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for manufacturing a housing according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of step 101 of a housing manufacturing method according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a housing fabricated by the method of fabricating a housing according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a housing base at step 101 of a method for fabricating a housing according to an embodiment of the invention;
FIG. 5 is a schematic cross-sectional view of a sheet metal part of step 101 of a method for making a housing according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of an extruded profile of step 101 of a method of making a housing according to an embodiment of the present invention;
FIG. 7 is a schematic flow chart illustrating step 1012 of step 101 of the method for manufacturing a housing according to the present invention;
FIG. 8 is a schematic processing diagram of step 1012 of a method for fabricating a housing according to an embodiment of the present invention;
FIG. 9 is a schematic processing diagram of step 1012 of a method for fabricating a housing according to an embodiment of the present invention;
FIG. 10 is a schematic processing diagram of step 1012 of a method for fabricating a housing according to an embodiment of the present invention;
FIG. 11 is a schematic processing diagram of step 1012 of a method for fabricating a housing according to an embodiment of the present invention;
FIG. 12 is a schematic processing diagram of step 1012 of a method for fabricating a housing according to an embodiment of the present invention;
FIG. 13 is a schematic processing diagram of step 101 of a method for manufacturing a housing according to an embodiment of the invention;
FIG. 14 is a schematic processing diagram of step 101 of a method for manufacturing a housing according to an embodiment of the invention;
FIG. 15 is a schematic processing diagram of step 101 of a method for manufacturing a housing according to an embodiment of the invention;
FIG. 16 is a process schematic of step 101 of a method of fabricating a housing according to an embodiment of the invention;
FIG. 17 is a schematic processing diagram of step 101 of a method for manufacturing a housing according to an embodiment of the invention;
FIG. 18 is a schematic processing diagram of step 102 of a method for fabricating a housing according to an embodiment of the present invention;
FIG. 19 is a schematic processing diagram of step 102 of a method for fabricating a housing according to an embodiment of the invention;
FIG. 20 is a schematic flow chart illustrating step 103 of a method for fabricating a housing according to an embodiment of the present invention;
FIG. 21 is a schematic processing diagram of step 103 of a method for fabricating a housing according to an embodiment of the present invention;
FIG. 22 is a schematic processing diagram of step 103 of a method for fabricating a housing according to an embodiment of the present invention;
FIG. 23 is a schematic illustration of a process of step 104 of a method of fabricating a housing according to an embodiment of the invention;
FIG. 24 is a schematic processing diagram of step 105 of a method for fabricating a housing according to an embodiment of the present invention;
FIG. 25 is a schematic flow chart illustrating step 106 of a method for fabricating a housing according to an embodiment of the present invention;
FIG. 26 is a schematic illustration of a process of step 106 of a method of fabricating a housing according to an embodiment of the invention;
FIG. 27 is a schematic illustration of a process of step 106 of a method of fabricating a housing according to an embodiment of the present invention;
FIG. 28 is a schematic cross-sectional view of a housing provided by an embodiment of the present invention;
fig. 29 is a schematic cross-sectional view of a mobile terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "thickness" and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, and do not imply or indicate that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Referring to fig. 1 and 3, the present invention provides a method for manufacturing a housing, which is used for manufacturing the housing. The housing 100 is formed by processing a metal plate member and a non-signal shielding material. The outer surface of the housing 100 is formed of a plurality of curved surfaces, so that the housing 100 has a smooth appearance, and the user experience is enhanced. It is understood that the housing 100 is applied to a mobile terminal, which may be a mobile phone, a tablet computer, a notebook computer, or the like. In this embodiment, the housing 100 is a back cover of a mobile phone.
As shown in fig. 1 and 4, the method for manufacturing the housing includes the steps of:
101: providing a housing base body 10, wherein the housing base body 10 is provided with a first surface 11, a second surface 12 arranged opposite to the first surface 11, a first inner cavity 13 extending from the first surface 11 to the second surface 12, and an antenna slot 14 penetrating from the second surface 12 to the first inner cavity 13.
In this embodiment, the housing base 10 is formed by cutting, extruding and milling. The housing base 10 is substantially in the form of a rectangular plate. The first surface 11 and the second surface 12 are large surfaces on both sides of the housing base 10. The first surface 11 is curved circumferentially and the second surface 12 is curved circumferentially. The first surface 11 has a first curved region 111 and an internal cavity 13 connected to the first curved region 111. The second surface 12 has a second curved region 121 and a flat region 122 opposite the cavity 13. The curvature of the first curved region 111 of the first surface 11 is greater than the curvature of the second curved region 121 of the second surface 12. The area of the first bending region 111 of the first surface 11 is larger than the area of the second bending region 121 of the second surface 12. That is, during the manufacturing process of the first housing base 10, the stress applied to the first surface 11 is greater than that applied to the second surface 12. By using the first shell substrate 10 with the first surface 11 and the second surface 12, and by using the shape of the shell substrate 10 close to the shell 100, the stress applied to the first shell substrate 10 in the subsequent steps is small, and the shell substrate 10 is prevented from being damaged in the subsequent steps. The inner cavity 13 is used for processing a cavity of the housing 100 for accommodating electronic components and facilitating the formation of an insulating part into the inner cavity 13. The antenna slot 14 extends through the inner cavity 13. The antenna slot 14 is used to machine the antenna clearance area of the housing 100. The housing base body 10 also has a fillet 15 connecting the first surface 11 and the second surface 12. In the process of processing the shell base body 10, the excess material edge 15 is clamped by a clamping fixture so as to stabilize the shell base body 10 and facilitate the processing of the shell base body 10.
In one embodiment, the step 101 comprises the steps of:
1011: an extruded profile 20 is provided.
In the present embodiment, as shown in fig. 5 and 6, the extruded profile 20 is formed by processing a metal plate. First, cutting a rectangular metal plate member 21 is provided. The sheet metal element 21 has a first large face 211 and a second large face 212. The first large surface 211 and the second large surface 212 are rectangular surfaces. The first large surface 211 is a flat surface, and the second large surface 212 is a flat surface. Before the first large surface 211 and the second large surface 212 are processed, the first large surface 211 and the second large surface 212 need to be cleaned to remove dust on the first large surface 211 and the second large surface 212. Then, the burrs of the peripheral edge of the sheet metal member 21 are removed. It is right the week side of sheet metal component 21 is polished for sheet metal component 21 is neat, and it is right to avoid in sheet metal component 21's the course of working, sheet metal component 21 atress is uneven, makes sheet metal component 21's deformation is balanced, improves the outward appearance effect. The sheet metal element 21 is heated. The sheet metal piece 21 is placed in a heating apparatus so that the temperature of the sheet metal piece 21 is raised to a preset value. The intermolecular stress of the metal plate 21 is reduced after heating, so that the deformation stress of the metal plate 21 is reduced, and the metal plate 21 is conveniently extruded and molded. The first large face 211 and the second large face 212 of the sheet metal element 21 are pressed, the first large face 211 forming a first pressing face 213 and the second large face 212 forming a second pressing face 214. Specifically, the sheet metal member 21 is extruded by a forging die. The sheet metal member 21 is placed in a forging die, and the sheet metal member 21 is pressed. The periphery of the first large surface 211 is pressed by a forging die, and the periphery of the second large surface 212 is pressed. The periphery of the first large surface 211 of the metal plate 21 is bent and deformed by the pressing of the press die to form the first pressing surface 213. The periphery of the second large surface 212 of the metal plate 21 is bent and deformed by the extrusion of the forging die to form the second extrusion surface 212. When the forging and pressing die performs impact extrusion on the metal plate 21, the metal plate 21 is slowly stressed, so that the defects of collapse, material pulling, sinking and the like of the metal plate 21 are avoided. The first pressing surface 213 is disposed flatly in a non-peripheral region, and the second pressing surface 214 is disposed flatly in a non-peripheral region, so as to provide a sufficient machining allowance for a subsequent machining process. The second pressing surface 214 is bent at both sides of the metal plate member 21 in the longitudinal direction to form grooves 215. The groove 215 is used for clamping the extruded profile 20 and reducing the processing cost of the extruded profile 20. By extruding the sheet metal part 21 into the extruded profile 20, the stress in the extruded profile 20 is strengthened, and the extruded profile 20 is more compact and hard.
1012: the extruded profile 20 is processed.
In the present embodiment, the extruded profile 20 is processed so that the extruded profile 20 is processed to have a structure close to the housing base 10. The extruded profile 20 may be formed by a forging and pressing process or a numerical control milling machine. The first extrusion surface 213 of the extruded profile 20 is used to form the first surface 11, and the second extrusion surface 214 is used to form the second surface 12.
Referring to FIG. 7, in one embodiment, the step 1012 includes the steps of:
10121: the extruded profile 20 is milled for the first time.
As shown in fig. 8, 9 and 10, in the present embodiment, the extruded profile 20 is roughly milled using a numerically controlled milling machine so that the extruded profile 20 is processed to have a shape substantially close to the shape of the housing base 10. First, a clamping positioning hole 213a is formed on the periphery of the first pressing surface 213 corresponding to the groove 215. Then, a rough milling cavity 216 is machined on the first pressing surface 213 according to the clamping positioning hole 213 a. The rough milled cavity 216 is generally proximate to the internal cavity 13 to facilitate machining of the internal cavity 13. During the process of milling the rough milling cavity 216, a milling positioning hole 217 is machined in the rough milling cavity 216. The milling positioning hole 217 provides a positioning reference for the rough milling cavity 216 in the subsequent further fine machining process, so that the rough milling cavity 216 can be conveniently machined. Then, the burrs on the first pressing surface 213 are removed, and the periphery of the first pressing surface 213 is processed to form the first pressing surface 213 into the first surface 11. The second extrusion surface 214 of the extruded profile 20 is roughly milled to form a large surface 218 to be machined. The large surface 218 to be machined is used for machining the second surface 12 of the housing base body 10. The extrusion section 20 is milled for the first time, so that the extrusion section 20 is formed into a regular three-dimensional volume, and subsequent milling is facilitated.
In a first milling step of the extruded profile 20, the side wall connecting the first extrusion face 213 and the second extrusion face 214 is milled to obtain the large face 218 to be machined and the side 219 to be machined connecting the first surface 11.
10122: obtaining a rough milling part 22, wherein the rough milling part 22 is provided with a first surface 11 and a rough milling cavity 216 opened on the first surface 11.
As shown in fig. 11, in the present embodiment, after the first pressing surface 213 is machined into the first surface 11, burrs of the first surface 11 and the large surface 218 to be machined are removed, and burrs of the rough milling cavity 216 are removed, so that the rough milling part 22 is obtained. The roughing 22 also has a side 219 to be machined connecting the first surface 11 and the large surface 218 to be machined. The side 219 to be machined is used to machine the side structure of the housing 100.
10123: the inner wall of the rough milling cavity 216 is milled for the second time to form the accommodating cavity 16.
As shown in fig. 12, in the present embodiment, the housing chamber 16 is further close to the inner chamber 13. The rough milling cavity 216 forms the accommodating cavity 16 by machining a counter bore or/and a boss at a position preset in the rough milling cavity 216 according to the milling positioning hole 217. The accommodating cavity 16 is formed with an insulating material, so that the housing 100 has an insulating portion, and the antenna radiator is isolated from the housing 100 by the insulating portion, thereby facilitating the installation of the antenna radiator inside the housing 100. By machining the rough milling cavity 216 into the receiving cavity 16, the insulating material subsequently formed in the receiving cavity 16 is bonded to the housing base 10 more firmly.
By milling the extruded profile 20 twice, the size of the inner cavity 13 of the extruded profile 20 is accurate, and the molding quality of the shell base body 10 is improved.
10124: a side hole 17 penetrating to the receiving cavity 16 is formed on the side 219 to be processed.
As shown in fig. 13, in the present embodiment, a milling process is used to machine a side hole 17 penetrating to the receiving cavity 16 on the side 219 to be machined. The side hole 17 is used for machining an earphone hole of the housing 100. Before accepting not shaping insulating part in the chamber 16, process earlier side opening 17, convenient follow-up to accept 16 shaping insulating part in-process in chamber, insulating material can accept in side opening 17, in order to form the earphone hole of casing 100 to make things convenient for behind the earphone plug-in components inserted the earphone hole with casing 100 is isolated.
In another embodiment, the step 1012 includes the steps of:
the extruded profile 20 is swaged.
In this embodiment, the extruded profile 20 is placed in a forging die, and the first extrusion surface 213 and the second extrusion surface 214 are forged by an upper die and a lower die of the forging die, respectively, so that the first extrusion surface 213 is forged into the first surface 11, and the second extrusion surface 214 is forged into the second surface 12. And a flash 17 is forged between the first surface 11 and the second surface 12.
A swage housing is obtained having a first surface 11 and a second surface 12 disposed opposite the first surface.
In this embodiment, after the forging and pressing of the first surface 11 and the second surface 12 are completed, the first surface 11 and the second surface 12 are deburred. The forging housing also has a flash edge connecting the first surface 11 and the second surface 12. The side structure of the housing 100 is finally formed by subsequently removing the flash edge.
A housing cavity 16 is machined in said first surface 11.
In this embodiment, the accommodating cavity 16 is milled on the first surface 11 by using a numerical control milling process.
The step 101 further comprises the steps of:
1013: a housing 30 to be processed is obtained, the housing 30 to be processed having a first surface 11 and a receiving cavity 16 defined by the first surface 11.
The step 101 further comprises the steps of:
1014: and performing nano-hole treatment on the shell 30 to be processed.
In this embodiment, a plurality of nano-scale concave holes are processed on the inner wall of the accommodating cavity 16 of the to-be-processed housing 30, so as to facilitate the effective combination of the subsequent insulating material and the to-be-processed housing 30. First, the housing 30 to be processed is washed with water to remove grease from the housing 30 to be processed. Then, the process case 30 is sequentially subjected to alkali washing, water washing, acid washing, water washing, pre-oxidation, and water washing. Finally, the housing 30 to be processed is dried.
The step 101 further comprises the steps of:
1015: the cavity 13 is obtained by molding the insulating part 18 into the housing cavity 16.
As shown in fig. 14, in the present embodiment, the housing 30 to be processed is a metal member. The insulating portion 18 is made of plastic. The insulating portion 18 is formed using an in-mold injection molding process. Firstly, the housing 30 to be processed is placed in an injection mold, then a hot-melt plastic material is injected into the injection mold, the injection mold is opened after the hot-melt plastic material is cooled and solidified, and the insulation portion 18 is formed on the solidified plastic part of the housing 30 to be processed. The insulating portion 18 provides an insulating environment for the housing 100, and electronic components isolated from the metal portion of the housing 100 can be conveniently fixed on the insulating portion 18.
The step 101 further comprises the steps of:
1016: the large surface 218 to be machined is milled to shape the second surface 12.
As shown in fig. 15, in the present embodiment, the large surface 218 to be machined is milled by using a numerical control milling process to machine the second surface 12. The large surface 218 to be processed and the inner wall of the accommodating cavity 16 are sequentially subjected to corrosion treatment of alkali washing, water washing, acid washing, water washing, pre-oxidation and water washing. The large surface to be machined 218 is provided with nanoscale concave holes. And removing the large surface 218 to be processed, and molding the second surface 12, so that no nano-scale concave hole exists on the second surface 12, and the molding quality of the outer surface of the shell substrate 10 is ensured. By forming the second surface 12 after forming the insulating part 18, the second surface 12 is not easily damaged, and the forming quality of the second surface 12 is improved.
The step 101 further comprises the steps of:
1017: an antenna slot 14 penetrating to the receiving cavity 16 is processed on the outer side of the housing 30 to be processed.
As shown in fig. 16 and 17, in the present embodiment, the antenna groove 14 penetrating to the housing cavity 16 is formed in the second surface 12. Two adjacent antenna grooves 14 are machined at one end of the second surface 12 of the housing 30 to be machined in the length direction. The width of each antenna slot 14 is less than the distance between two antenna slots 14. The antenna slot 14 is formed by a milling process. Each of the antenna grooves 14 partitions the housing 30 to be processed. The insulating portion 18 closes the opening of the antenna groove 14 in the housing cavity 16. The insulating part 18 stabilizes the divided portions of the housing 30 to be processed, so that the housing 30 to be processed is structurally stabilized. A plurality of the antenna grooves 14 are milled at preset positions of the large surface 218 to be machined by a milling cutter. The antenna groove 14 has a straight line segment 31a and an arc segment 31b connecting the straight line segment 31 a. The straight line segment 31a extends along a straight line and the arc segment 31b extends along an arc. When the straight line segment 31a is milled, a disc-shaped cutter can be used for milling to increase the milling speed. When the arc segment 31b is milled, a cylindrical cutter is adopted for milling, so that the cutter can conveniently process along an arc path, and the arc segment 31b and the straight segment 31a can be conveniently and smoothly butted. After the antenna slot 14 is formed, the shell 30 to be processed and the insulating part 18 are subjected to corrosion treatment of alkali washing, water washing, acid washing, water washing, pre-oxidation and water washing for the second time, so that nano-scale concave holes are formed in the side wall of the antenna slot 14, and the non-signal shielding material filled in the antenna slot 14 can be conveniently and subsequently combined with the shell 30 to be processed effectively. In other embodiments, the antenna groove 14 may not completely block the housing 30 to be processed.
The shell manufacturing method further comprises the following steps:
102: the antenna groove 14 is filled with a non-signal shielding material 32.
As shown in fig. 18 and 19, in the present embodiment, a filling jig 33 is provided, and the filling jig 33 is fixed at a position where the large surface 218 to be processed faces the plurality of antenna grooves 14. The filling fixture 33 includes a top end 331 and a bottom end 332 disposed opposite the top end 331. The filling jig 332 is provided with a glue pouring flow channel 333 penetrating from the top end 331 to the bottom end 332. The bottom end 332 abuts against the second surface 12, and the opening of the glue pouring channel 333 at the bottom end 332 faces the plurality of antenna slots 14. The glue channel 333 is open at the top end 331 for infusing molten non-signal shielding material 32. The non-signal shielding material 32 is heated to a molten state, and the molten non-signal shielding material 32 is poured into the glue pouring channel 333 of the filling jig 33. The non-signal screen material 32 in a molten state flows into the antenna slot 14 through the potting channel 333. The molten non-signal shielding material 32 is formed in the antenna groove 14 and gradually deposited into the opening of the antenna groove 14 at the second surface 12. The non-signal shielding material 32 to be melted flows into the antenna groove 14, and the non-signal shielding material 32 in a melted state is made to be the solid non-signal shielding material 32 by adopting a cooling solidification process, so that the solid non-signal shielding material 32 is effectively combined with the housing 30 to be processed, and the antenna groove 14 is sealed. The non-signal shielding material 32 that overflows the antenna slot 14 and accumulates on the second surface 12 forms a flash paste 34. The non-signal shielding material 32 overflows the antenna slot 14, so that the antenna slot 14 can be filled with the non-signal shielding material 32 after the non-signal shielding material is cured and shrunk, and the appearance molding quality of the shell 100 is ensured.
The manufacturing method of the shell comprises the following steps:
103: the second surface 12 is machined to a back curve 41.
In this embodiment, the back curved surface 41 is formed by removing the surface 12 and the flash glue 34 accumulated on the second surface 12, so as to ensure the precise size of the back curved surface 41.
In one embodiment, referring to fig. 20, the step 103 includes the steps of:
1031: milling the second surface 12 to shape the milled curved surface 123
As shown in fig. 21, in the present embodiment, a milling curved surface 123, in which a boss 124 is connected to the boss 124, is milled at the second bending region 121 of the second surface 12 by a nc milling process. The outer circumferential side of the boss 122 extends along an elliptical raceway-type curve. The peripheral side surface of the boss 122 is connected with the milling curved surface 123 through an arc curved surface 124. The included angle between the peripheral side surface of the boss 122 and the milling curved surface 123 is not fixed, so that the bending radius value of the arc curved surface 125 is also not fixed. For example: the peripheral side surface of the boss 122 has a first side 122a close to the edge of the second surface 12, the peripheral side surface of the boss 122 has a second side 122b away from the edge of the second surface 12, and the included angle between the first side 122a and the milling curved surface 123 is greater than the included angle between the second side 122b and the milling curved surface 123. That is, the circular arc curved surface 125 has two different circular arc radii. Milling the curved surface 123, forming the boss 44 with an oval runway shape on the curved surface 123, and forming the arc curved surface 125 with at least two different arc radiuses to reduce the processing difficulty of the shell base body 10, forming a structure with a complex structure through a simple processing technology, and improving the production efficiency.
1032: and turning the second surface 12 to form a turned surface 126.
As shown in fig. 22, in the present embodiment, the second surface 12 is milled into the milled curved surface 123 at the second bending area 121, and the flat area 122 of the second surface 12 is machined into the turned curved surface 126 through a turning process. The curved turning surface 126 is in smooth butt joint with the curved milling surface 123. In the process of turning the flat area 122, a copying tool is used to turn the flat area 122 of the second surface 12, turn a part of the non-signal shielding material 32 connected to the second surface 12, and turn off the flash glue 34 deposited on the second surface 12, so as to remove the flash glue 34 and simultaneously machine the shape of the turned curved surface 126. The shape of the cutting edge of the profiling cutter is similar to that of the turning curved surface 126, so that the turning curved surface 126 is guaranteed to be processed on the flat area 122, the processing time is reduced, and the cost of the shell manufacturing method is reduced. The antenna slot 14 forms an antenna seam 35 after removal of the second surface 12.
1033: and (3) performing surface treatment on the junction of the turning curved surface 126 and the milling curved surface 123.
In this embodiment, the back curved surface 41 is formed by polishing the joint between the curved turning surface 126 and the curved milling surface 123 to make the curved turning surface 126 and the curved milling surface 123 smoothly abut against each other.
The shell manufacturing method further comprises the following steps:
104: the excess edges 15 are removed.
As shown in fig. 23, in the present embodiment, the excess edge 15 is milled away by a milling process, and a side curved surface 42 connecting the first surface 11 and the back curved surface 41 is formed. The side curved surface 42 is smoothly butted with the first surface 11, and the side curved surface 42 is smoothly butted with the back curved surface 41.
The shell manufacturing method further comprises the following steps:
105: the inner wall of the cavity 13 is machined.
As shown in fig. 24, in the present embodiment, the inner wall of the inner cavity 13 is further precisely milled by a milling process to form a back cover cavity 43. By milling the insulating part 18 on the inner wall of the inner cavity 13, various electronic components can be placed in the back cover cavity 43 and can be stabilized, so that the use requirement of the shell 100 can be met.
The shell manufacturing method further comprises the following steps:
106: the back surface 41 is subjected to surface treatment.
In the present embodiment, in the process of surface-treating the back curved surface 41, the side curved surface 42 and the first surface 11 may be surface-treated. The back curved surface 41, the side curved surface 42 and the first surface 11 form an external appearance surface of the housing 100. The back curved surface 41, the side curved surface 42 and the first surface 11 are subjected to surface treatment, so that the appearance of the housing 100 is satisfactory.
As shown in fig. 25, 26 and 27, the step 106 includes the steps of:
1061: the back curve 41, the side curve 42 and the first surface 11 are ground.
The burrs on the back curved surface 41, the side curved surface 42 and the first surface 11 are ground, and the step differences of the back curved surface 41, the side curved surface 42 and the first surface 11 are ground. The back curved surface 41, the side curved surface 42 and the first surface 11 are made smooth, and the back curved surface 41 and the side curved surface 42 are made smooth in butt joint, and the side curved surface 42 and the first surface 11 are made smooth in butt joint.
1062: the back curve 41, the side curve 42 and the first surface 11 are finish polished.
The back curved surface 41, the side curved surface 42 and the predetermined area of the first surface 11 are finely polished, so that the back curved surface 41, the side curved surface 42 and the first surface 11 form a surface with a high reflectivity in the predetermined area, and the shell 100 can generate an effect of reflecting light rays with a high brightness in the predetermined area.
1063: the back curve 41, the side curve 42 and the first surface 11 are sandblasted.
After the back curved surface 41, the side curved surface 42 and the first surface 11 are subjected to sand blasting, matte lines are generated, so that the back curved surface 41, the side curved surface 42 and the first surface 11 have the performances of oil resistance, scratch resistance, dirt resistance and the like, and the touch feeling of a user is improved.
1064: the back curve 41, the side curve 42 and the first surface 11 are anodized.
The back curved surface 41, the side curved surface 42 and the first surface 11 are anodized to present desired colors, so that the housing 100 can present various color requirements to meet customer requirements. It can be understood that the back curved surface 41, the side curved surface 42 and the first surface 11 are subjected to surface treatment in steps 1061, 1062 and 1063 to form a first appearance curved surface 41a, a second appearance curved surface 42a and a third appearance curved surface 11a of the housing 100, respectively. The back curved surface 41 is different from the first design curved surface 41a only in design structure and is substantially the same in formation. For example, the back curved surface 41 may have a few burrs, uneven surface, and bright light reflectivity, and the first design curved surface 41a has no burrs, has even uneven surface, has matte light reflectivity, and has color. Similarly, the side curved surface 42 and the second appearance curved surface 42a are also different only in appearance structure and are substantially the same in formation, and the first surface 11 and the third appearance curved surface 11a are also different only in appearance structure and are substantially the same in shape.
Referring to fig. 28, the present invention provides a housing 100, where the housing 100 includes a metal portion 110 and an insulating portion 18, the metal portion 110 has a first appearance curved surface 41a and a third appearance curved surface 11a opposite to the first appearance curved surface 41a, the metal portion 110 further has a back cover cavity 43 opened from the third appearance curved surface 11a to the first appearance curved surface 41a, and an antenna seam 35 penetrating from the first appearance curved surface 41a to the back cover cavity 43, the antenna seam 35 is filled with a non-signal shielding material 32, and the insulating portion 18 is fixed in an inner cavity of the metal portion 110. The boss 122 is arranged on the first appearance surface curved surface 41a, and the peripheral side surface of the boss 122 is connected with the first appearance curved surface 41a through an arc appearance curved surface 123. The angle between the peripheral side surface of the boss 122 and the first appearance curved surface 41a is not fixed, so that the bending radius value of the circular arc appearance curved surface 123 is also not fixed. The first appearance curved surface 41a of the housing 100 is smooth and mellow, so that the touch feeling requirement of a user is met, and the user experience is improved. It is understood that the housing 100 is a back cover of the mobile terminal. The mobile terminal can be a mobile phone, a tablet computer or a notebook computer and the like.
Referring to fig. 29, the present invention further provides a mobile terminal 200, wherein the mobile terminal 200 includes the housing 100. The mobile terminal 200 further includes a front cover 210 covering the housing 100, and the front cover 210 is formed of a glass plate and a display screen laminated on the glass plate. The front cover 210 covers the back cover cavity 43 of the housing 100 to protect the electronic components fixed in the back cover cavity 43. The mobile terminal 200 may be a mobile phone, a tablet computer, a notebook computer, or the like.
The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the embodiments of the present invention and are intended to be within the scope of the present invention.
Claims (20)
1. A shell manufacturing method is characterized by comprising the following steps:
providing a housing base body, wherein the housing base body is provided with a first surface, a second surface arranged opposite to the first surface, an inner cavity extending from the first surface to the second surface, and an antenna slot penetrating from the second surface to the inner cavity;
providing a filling jig, wherein the filling jig is positioned outside the second surface, filling a non-signal shielding material into the antenna slot under the second surface through the filling jig, and gradually accumulating the non-signal shielding material to the opening of the antenna slot on the second surface;
and processing the second surface into a back curved surface.
2. The method of manufacturing a housing of claim 1, wherein the step of providing a housing base includes:
providing an extruded profile;
processing the extruded profile;
obtaining a shell to be processed, wherein the shell to be processed is provided with a first surface and an accommodating cavity arranged on the first surface;
forming an insulating part in the accommodating cavity to obtain the inner cavity;
and processing an antenna slot penetrating to the accommodating cavity on the outer side of the shell to be processed.
3. The method of making a housing of claim 2, wherein the step of machining the extruded profile comprises:
forging and pressing the extruded section;
obtaining a swage housing having a first surface and a second surface disposed opposite the first surface;
an accommodating cavity is machined in the first surface.
4. The method of making a housing of claim 2, wherein the step of machining the extruded profile comprises:
milling the extruded profile for the first time;
obtaining a rough milling piece, wherein the rough milling piece is provided with a first surface and a rough milling cavity formed in the first surface;
and milling the inner wall of the rough milling cavity for the second time to form an accommodating cavity.
5. The method for manufacturing a shell according to claim 4, wherein in the step of first milling the extruded profile, milling positioning holes are machined in the extruded profile.
6. The method for manufacturing a housing according to claim 4, wherein in the step of obtaining a rough milled piece, the rough milled piece further has a large face to be machined opposite to the first surface, and after the step of forming the insulating portion, the large face to be machined is milled to form the second surface.
7. The method for manufacturing a housing according to claim 4, wherein in the step of obtaining a rough milled piece, the rough milled piece further has a side to be machined connected to the first surface;
and after the step of milling the rough milling cavity for the second time, machining a side hole penetrating through the accommodating cavity on the side face to be machined.
8. The method of manufacturing a housing according to claim 2, further comprising, before molding the insulating portion in the receiving cavity, the steps of:
and carrying out nano hole treatment on the shell to be processed.
9. The method for manufacturing a housing according to claim 8, wherein a nano-injection molding process is used in the step of molding the insulating portion in the receiving cavity.
10. The method as claimed in any one of claims 1 to 9, wherein in the step of machining the second surface into a back surface, the second surface and a portion of the non-signal shielding material connecting the second surface are milled to obtain the back surface.
11. The method for manufacturing the shell according to any one of claims 1 to 9, wherein in the step of machining the second surface into a back curved surface, the second surface and a part of the non-signal shielding material connected with the second surface are turned to obtain the back curved surface.
12. The method of claim 10, wherein the step of forming the second surface into a back curve includes turning the second surface and the portion of the non-signal shielding material that connects the second surface with a profiling tool.
13. The method for manufacturing the shell according to any one of claims 1 to 9, wherein in the step of filling the antenna slot with the non-signal shielding material, the non-signal shielding material overflows the antenna slot and is accumulated on the second surface to form flash glue;
and in the step of processing the second surface into a back curved surface, removing the second surface, removing flash glue on the second surface and removing part of non-signal shielding material connected with the second surface.
14. The method of manufacturing a housing according to any one of claims 1 to 9, wherein in the step of providing a housing base body, the housing base body further has a fillet connecting the first surface and the second surface; after the second surface is processed into a back curved surface, the method further comprises the following steps: and removing the residual material edges.
15. The method of claim 14, wherein the step of removing the trim edge is to form a side curve connecting the first surface and the back curve.
16. The method for manufacturing the shell according to any one of claims 1 to 9, wherein the step of processing the second surface into a back surface further comprises:
and machining the inner wall of the inner cavity.
17. The method for manufacturing the shell according to any one of claims 1 to 9, further comprising the steps of:
and carrying out surface treatment on the back curved surface.
18. The method of manufacturing a shell of claim 17, wherein the step of surface treating the back curve comprises:
polishing the back curved surface;
finely polishing the back curved surface;
sandblasting the back curve;
and anodizing the back curved surface.
19. A housing, characterized in that it is produced by the method according to any one of claims 1 to 18.
20. A mobile terminal, characterized in that it comprises a housing according to claim 19.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710928353.1A CN107683040B (en) | 2017-09-30 | 2017-09-30 | Shell manufacturing method, shell and mobile terminal |
| PCT/CN2018/103659 WO2019062477A1 (en) | 2017-09-30 | 2018-08-31 | Housing manufacturing method, housing, and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710928353.1A CN107683040B (en) | 2017-09-30 | 2017-09-30 | Shell manufacturing method, shell and mobile terminal |
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| Publication Number | Publication Date |
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| CN107683040A CN107683040A (en) | 2018-02-09 |
| CN107683040B true CN107683040B (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710928353.1A Active CN107683040B (en) | 2017-09-30 | 2017-09-30 | Shell manufacturing method, shell and mobile terminal |
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| CN (1) | CN107683040B (en) |
| WO (1) | WO2019062477A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107683040B (en) * | 2017-09-30 | 2019-12-27 | Oppo广东移动通信有限公司 | Shell manufacturing method, shell and mobile terminal |
| CN112312710B (en) * | 2019-07-15 | 2023-09-29 | 天津海尔洗涤电器有限公司 | Control circuit sealing structure and washing machine using same |
| CN112566430B (en) * | 2019-09-26 | 2023-07-14 | 青岛海尔洗衣机有限公司 | Electrical element sealing structure and clothes treatment device using same |
| CN111627338B (en) * | 2020-06-28 | 2021-09-21 | 武汉天马微电子有限公司 | Profiling module, manufacturing method of curved surface display screen and laminating system of curved surface display screen |
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| CN107683040B (en) * | 2017-09-30 | 2019-12-27 | Oppo广东移动通信有限公司 | Shell manufacturing method, shell and mobile terminal |
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| CN107497986B (en) * | 2017-09-30 | 2020-04-21 | Oppo广东移动通信有限公司 | Shell manufacturing method, shell and mobile terminal |
| CN107801334B (en) * | 2017-10-24 | 2020-05-26 | Oppo广东移动通信有限公司 | Shell manufacturing method, shell and mobile terminal |
| CN107738074B (en) * | 2017-10-24 | 2019-07-09 | Oppo广东移动通信有限公司 | A kind of method for producing shell, shell and mobile terminal |
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| CN103846382A (en) * | 2014-03-21 | 2014-06-11 | 亚超特工业有限公司 | Forging mould and metal shell of electronic device |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019062477A1 (en) | 2019-04-04 |
| CN107683040A (en) | 2018-02-09 |
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Address after: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant after: OPPO Guangdong Mobile Communications Co., Ltd. Address before: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant before: Guangdong OPPO Mobile Communications Co., Ltd. |
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