CN104907521B - Mobile phone center manufacturing process - Google Patents

Mobile phone center manufacturing process Download PDF

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Publication number
CN104907521B
CN104907521B CN201510155845.2A CN201510155845A CN104907521B CN 104907521 B CN104907521 B CN 104907521B CN 201510155845 A CN201510155845 A CN 201510155845A CN 104907521 B CN104907521 B CN 104907521B
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China
Prior art keywords
frame
metal
sliding block
framework
die
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CN104907521A (en
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卫凡
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Dongguan Changying Precision Technology Co. Ltd.
Guangdong Evenwin Precision Technology Co Ltd
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Dongguan Changying Precision Technology Co Ltd
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Abstract

A kind of mobile phone center manufacturing process, including:Step 1: provide metal outer frame frame;Step 2: testing the dilation dimension after the metal outer frame frame heating, and the positioning sliding block of the mould is designed according to the dilation dimension;Step 3: heating the outer framework is put into matched moulds in the die cavity of the mould;Step 4: injection metallic solution enters in the die cavity of the mould;Step 5: cooling molds and forms die-casting body between the medial surface of the outer framework;Mobile phone center manufacturing process of the present invention can effectively solve problem on deformation caused by the heating expansion of metal outer frame frame.

Description

Mobile phone center manufacturing process
Technical field
The present invention relates to metal processing sectors, espespecially a kind of mobile phone center manufacturing process.
Background technology
Currently, Smartphone device, particularly high-end smartphones, metal center, bonnet are used to cater to consumer There is problems with the manufacture to the demand of metal-like, but metal center, if the overall technique processed using forging in CNC Manufactured, then manufacturing cost is too high, and common customer is difficult to receive.And it is overall produced by the way of die casting, then hand The outer surface consistency of machine center finished product is inadequate, and has loose husky hole, and outward appearance is difficult to be received.
The system that No. 201110141704.7 patent application of the People's Republic of China (PRC) discloses a kind of forging, die casting is combined Technique is made, that is, first passes through the housing of forging or other modes shaping center and then again by passing through die casting inside the housing Mode be molded the internal structure of center, can solve the problem that the contradiction between manufacturing cost and outward appearance.But pass through the outer of forging molding Frame is inserted in mould when carrying out die-casting process, it is necessary to be heated to the housing good to ensure to have between die-casting body and housing Adhesion, but the housing of the heating can produce thermal expansion, and the design of die size is typically according to not heated housing Size design, causing the thermal expansion of the housing does not have rational Free up Memory and deforms in mould, influences product quality.Together When, the patent is also improved between die-casting body using the method processed recess in the inner side of the housing or weld mold insert Adhesion, but the difficulty of processing of recess is larger on the inside of housing, and the method for mold insert and unreliable is welded, welding procedure be present and answer It is miscellaneous, fraction defective is high and the problems such as may influenceing outward appearance.
Brief description of the drawings
Fig. 1 is the stereogram and its partial enlarged drawing of the outer framework of mobile phone center of the present invention;
Fig. 2 is stereogram and its partial sectional view of the outer framework of the real mobile phone center of the present invention after die-casting process;
Fig. 3 is the stereogram of mobile phone center manufacturing process die casting of the present invention;
Fig. 4 is placed on progress die casting in die cavity for the housing of the mobile phone center in the real mobile phone center manufacturing process of the present invention and added The structure chart and its partial enlarged drawing of work;
Fig. 5 is outer framework of the positioning sliding block to the mobile phone center of the die casting of mobile phone center manufacturing process of the present invention The schematic perspective view positioned;
Fig. 6 is along the sectional view of A-A dotted lines shown in Fig. 5 after outer framework is heated;
Fig. 7 is along the sectional view of A-A dotted lines shown in Fig. 5 in the case where outer framework is without heated condition;
Fig. 8 is the die-cast metal solution flow graph of mobile phone center manufacturing process of the present invention;
Fig. 9 is the sectional view and its partial enlarged drawing along B-B dotted lines shown in Fig. 8.
The content of the invention
It is low it is an object of the invention to provide a kind of processing cost and can effectively solve outer framework thermal expansion in die-casting process The mobile phone center manufacturing process of problem.
Therefore, the invention provides a kind of mobile phone center manufacturing process, including:
Step 1: provide metal outer frame frame;
Step 2: the dilation dimension after the metal outer frame frame heating is tested, and according to described in dilation dimension design The positioning sliding block of mould;
Step 3: heating the outer framework is put into matched moulds in the die cavity of the mould;
Step 4: injection metallic solution enters in the die cavity of the mould;
Step 5: cooling molds and forms die-casting body between the medial surface of the outer framework.
Compared to prior art, mobile phone center manufacturing process of the present invention is in mold design, after being heated to the outer framework Change in size verified that the accurate dimension after being heated according to the outer framework that calculates designs the chi of the positioning sliding block It is very little, solve the problems, such as outer framework described in prior art after being expanded because of heating by the positioning sliding block crimp.
Embodiment
Refer to the outer framework 10 for needing to carry out the mobile phone center of die-casting process shown in Fig. 1, Fig. 2, the outer framework 10 It is by the technological forming such as forging or extruding, and is process through CNC.The outer framework 10 is also not exclusively by other techniques and added Work forms.
The outer framework 10 is substantially in rectangular closed structure, including lateral surface 11, the medial surface 12 relative with lateral surface 11, Upper and lower side 13 between medial surface 12 and lateral surface 11.Inwardly processing formation is prominent for the medial surface 12 of the outer framework 10 Go out portion 14, the protuberance 12 includes relatively thin protuberance 141 and thicker protuberance 143, and described relatively thin, thicker dashes forward The thickness for going out portion 141,143 is respectively less than the thickness of itself of outer framework 10.On the relatively thin protuberance 141 processing formed with Through hole 142, the through hole 142 form groove-like structure 144 towards interior side opening, the middle processing of the thicker protuberance 143, The groove-like structure 144 processes to form through hole 145 in above-below direction.
The outer framework 10 forms die-casting body 20 after die cast in the medial surface 12 of the outer framework 10, described Die-casting body 20 keeps integrative-structure with the outer framework 10.In press casting procedure, metal liquid enters the interior of the outer framework 10 Groove-like structure in the through hole 142 of the interior side opening of the relatively thin protuberance 141 of side 12 and on thicker protuberance 143 144 and in the through hole 145 of the above-below direction of groove-like structure 144, die-casting body 20 is formed after cooling.In this way, the inner side is opened Part die-casting body 20 in the through hole 142 of mouth passes through the interior side opening and die-casting body 20 forms unitary physical structure, strengthens institute State the adhesion of die-casting body 20 and outer framework 10.Meanwhile the part die-casting body 20 of filling and the groove in the groove-like structure 143 Part die-casting body 20 in the through hole 145 of the above-below direction of shape structure 143 forms the part of the whole of die-casting body 20, more enters one Walk the associativity that the die-casting body 20 and outer framework 10 are kept in upper and lower, left and right directions.
Referring to Fig. 3, Fig. 4 and showing includes for the mould to the outer framework 10 progress die-casting process, the mould Upper cores 31, lower die 32, the die cavity 35 between upper cores 31 and lower die 32, charging aperture 33 and some positioning sliding blocks 34.The positioning sliding block 34 is used to position the outer framework 10, the positioning sliding block by the lateral surface 11 of the outer framework 10 34 include four positions the outer framework 10 from four sides of the outer framework 10.
Refer to shown in Fig. 6, Fig. 8, Fig. 9, at least relative two positioning sliding blocks 34 are close to the side of outer framework 10 Formed with the extension 341 being covered on the upper side 13 of the outer framework 10, the Inner edge of the extension 341, which are provided with, to incline for extension Inclined portion 342, the bottom outer-edge of the rake 342 are concordant with the medial surface 12 of the outer framework 10.Two provided with extension 341 One in individual positioning sliding block 34 is connected with the charging aperture 33, and another is provided with exhaust outlet, in press casting procedure, the metal The extension 341 that solution is covered on the upper side 13 of outer framework 10 after entering along charging aperture 33 along the positioning sliding block 34 flows Move and enter in the die cavity 35 between the medial surface 12 of the outer framework 10, after the metallic solution enters, runner and die cavity 35 Interior gas is discharged by the exhaust outlet of another top of positioning sliding block 34, is filled out after the exhaust outlet vent gas by metallic solution Fill, die-casting body 20 is formed after being cooled down in the die cavity 35.
Because the metallic solution temperature reaches 700 DEG C, and the temperature after the outer framework 10 heats is about 220 DEG C, such as Metallic solution described in fruit can then cause the upper side 13 of the outer framework 10 to become directly through the upper side 13 of the outer framework 10 Shape and influence product plane degree, the positioning sliding block 34 sets and is covered in extension 341 on the upper side 13 of the outer framework 10 It is directly entered for metallic solution after between the medial surface 12 of the outer framework 10, efficiently solves flatness problems with respect.And The design of rake 342 on the extension 341 can help to the effective flowing of metallic solution.
Refer to shown in Fig. 1 to Fig. 9, the application mobile phone center manufacturing process includes following manufacturing process flow:
Step 1: emphasis is refering to shown in Fig. 1, Fig. 2, there is provided metal outer frame frame 10, the metal outer frame frame 10 are to pass through forging The technological forming such as make or extrude, and be process through CNC.
Step 2: the size of the thermal coefficient of expansion design mould positioning sliding block 34 after being heated according to the outer framework 10;
The step emphasis is referred to shown in Fig. 5 to Fig. 7, and the size of the mould positioning sliding block 34 is typically according to the normality Under outer framework 10 be designed, so the outer framework 10 be heated expansion after, cause the positioning sliding block 34 to described The extruding of outer framework 10 and deform, it is necessary to be modified to the positioning sliding block 34 of the mould.The step is needed first to described outer Framework 10 carry out heating for multiple times test, checking it is described it is heated after outer framework 10 change in size, by repeatedly test after Go out the heating coefficient of expansion of the outer framework 10, it is determined that the repeatedly size of the average minimal error of outer framework 10 after test heating, Size according to the positioning sliding block 34 of mould described in the size design of outer framework 10 after the heating.It is described that repeatedly test can also It is that some outer frameworks 10 are once subjected to heating operation, measures the dilation dimension after the heating of each outer framework 10 respectively.Such as Fig. 6 It is shown, when the outer framework 10 after heating is positioned by the positioning sliding block 34 in normal state, it should be the positioning sliding block 34 Medial surface be close to the lateral surface 11 of the outer framework 10.Again as shown in fig. 7, not heated outer framework 10 is in normal condition Under, a gap h between the medial surface of the positioning sliding block 34 and the lateral surface 11 of the outer framework 10 be present.After the heating The change of size can be measured by laser surveying instrument to lift precision.
Step 3: heat the outer framework 10 and be put into the die cavity 35 of the mould simultaneously matched moulds;
In this step, the outer framework 10 is heated between 210 DEG C -230 DEG C, and the mold temperature is also maintained at 210 Between DEG C -230 DEG C.The heating process of the outer framework 10 can select to carry out before mold cavity 35 is put into, in this way, can be with Improve processing efficiency;It can also be heated in described be put into the mold cavity 35, but the program is less efficient.
Step 4: the metallic solution is injected in the mold cavity 35;
The metallic solution is aluminium alloy solution, and the temperature of the metallic solution is at 700 DEG C or so, empirical tests, the gold The category temperature of outer framework 10 have at 220 DEG C with described 700 DEG C of metallic solution it is optimal surface binding, it is molten in the metal Outer framework 10, which is can obtain, after liquid cooling is combined most close product with the die-casting body 20.
For emphasis refering to shown in Fig. 3, Fig. 4, Fig. 8, Fig. 9, the metallic solution enters the mould from the charging aperture 33 In die cavity 35, the metallic solution is direct via the runner of one of them top of extension 341 for being located at the positioning sliding block 34 Into between the medial surface 12 of the outer framework 10, and cast gate 37 is formed on the extension 341 of the positioning sliding block 34, it is described The extension 341 for the positioning sliding block 34 that gas in die cavity 35 is provided with exhaust outlet via a top is discharged.It is described be provided with runner, The extension 341 of the positioning sliding block 34 of exhaust outlet covers the upper side 13 of the outer framework 10, and two positioning sliding blocks 34 are relative Positioned at two sides both sides of the outer framework 10.
Step 5: cooling die sinking;
The metallic solution forms what is be combined as a whole with the outer framework 10 after being cooled down in the die cavity 35 of the mould Die-casting body 20.
In mold design, the change in size after being heated to the outer framework 10 is carried out the application mobile phone center manufacturing process Checking, the accurate dimension after being heated according to the outer framework 10 calculated design the size of the positioning sliding block 34, solve existing There is the problem of outer framework 10 described in technology is because after heating expansion by 34 crimp of positioning sliding block.

Claims (5)

  1. A kind of 1. mobile phone center manufacturing process, it is characterised in that including:
    Step 1: providing metal outer frame frame, the metal outer frame frame is molded by forging or extrusion process, and is processed through CNC Form, the metal outer frame frame is in rectangular configuration, and the metal outer frame frame includes lateral surface, medial surface and upper and lower side, described It is less than described second formed with some first protuberances and the second protuberance, the thickness of first protuberance on medial surface and protrudes The thickness in portion, first protuberance, the thickness of the second protuberance are respectively less than the thickness of the metal outer frame frame, and described first is prominent Go out in portion processing formed with first through hole, the first through hole towards the inner side of the metal outer frame frame formed with opening, described the Processing forms groove-like structure among two protuberances, and the groove-like structure processes to form the second through hole in above-below direction;
    Step 2: testing the dilation dimension after the metal outer frame frame heating, and determine according to dilation dimension design mould Position sliding block;
    Step 3: heat the metal outer frame frame and be put into matched moulds in the die cavity of the mould;
    Step 4: injection metallic solution enters in the die cavity of the mould;
    Step 5: cooling molds and forms die-casting body between the medial surface of the metal outer frame frame;
    At least two positioning sliding blocks are provided with the extension being covered in above the upper side of the metal outer frame frame, one of positioning The runner for injecting the metallic solution is provided with above the extension of sliding block, is provided with and is used for above the extension of another positioning sliding block The exhaust outlet of exhaust, in step 4, the metallic solution is entered along the runner above the extension of the positioning sliding block Between the medial surface of the metal outer frame frame, the gas in the die cavity is along above the extension of positioning sliding block Exhaust outlet discharge, avoid the higher metallic solution of temperature from being caused directly through the upper side for contacting the metal outer frame frame Lateral plane degree is bad;
    In step 5, after cooling die sinking, the metallic solution is formed by curing die-casting body, and it is logical that the metallic solution enters described first A part for the die-casting body is formed in second through hole in hole, groove-like structure and groove-like structure after cooling.
  2. 2. mobile phone center manufacturing process as claimed in claim 1, it is characterised in that:It is described Step 2: testing outside the metal Dilation dimension after framework heating, and according to the positioning sliding block of dilation dimension design mould, including:
    Some metal outer frame framves are heated to 220 DEG C;
    The size after all metal outer frame frame heating is measured, and calculates average value;
    Positioning sliding block according to the metal outer frame frame size average design mould after heating.
  3. 3. mobile phone center manufacturing process as claimed in claim 2, it is characterised in that:After measuring all metal outer frame frame heating During size, the metal outer frame frame after heating expansion is measured using laser measuring apparatus.
  4. 4. mobile phone center manufacturing process as claimed in claim 1, it is characterised in that:It is described Step 3: heating outside the metal Framework is simultaneously put into matched moulds in the die cavity of the mould, including:
    The metal outer frame frame be preheated between 210 DEG C -230 DEG C;
    Metal outer frame frame after preheating is put into the mold cavity that mould temperature is maintained between 210 DEG C -230 DEG C;
    The lateral surface that the positioning sliding block slides into the metal outer frame frame positions the metal outer frame frame.
  5. 5. mobile phone center manufacturing process as claimed in claim 1, it is characterised in that be respectively equipped with runner, two of exhaust outlet The inner side of positioning sliding block is provided with rake, and the bottom of the rake is concordant with the medial surface of the metal outer frame frame.
CN201510155845.2A 2015-04-02 2015-04-02 Mobile phone center manufacturing process Active CN104907521B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN104907521B true CN104907521B (en) 2017-11-21

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105312949A (en) * 2015-10-30 2016-02-10 广东长盈精密技术有限公司 Positioning device
CN106141586A (en) * 2016-07-22 2016-11-23 维沃移动通信有限公司 A kind of electronic equipment center processing method, electronic equipment center and electronic equipment
CN108832273A (en) * 2018-06-12 2018-11-16 Oppo广东移动通信有限公司 Center component, electronic device and center module processing method
CN108971894A (en) * 2018-06-21 2018-12-11 东莞市依诺电子科技有限公司 A kind of technique of die casting composite molding
CN109277755B (en) * 2018-11-29 2020-12-08 福建省石狮市通达电器有限公司 Manufacturing process of die-casting combined aluminum mobile phone middle frame

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101497250A (en) * 2008-02-01 2009-08-05 深圳富泰宏精密工业有限公司 Housing
CN102811264B (en) * 2011-05-30 2015-06-24 李树忠 Mobile phone shell and machining method thereof
CN103640161B (en) * 2013-12-24 2016-08-31 东明兴业科技股份有限公司 Precise injection mould of large-frame super-narrow zinc alloy insert of cellphone front shell
CN203764938U (en) * 2014-03-07 2014-08-13 深圳市长盈精密技术股份有限公司 Magnesium alloy mobile phone middle frame die-casting mould
CN104015009B (en) * 2014-06-13 2016-09-14 广东长盈精密技术有限公司 A kind of mobile phone center, the preparation method of bonnet

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