Background technology
Along with social progress, everybody has a new requirement to the various consumer goods, be 3C electronic product, and the consumption of 3C Product has become the indispensable some of people's material life by it.The product of the Gao Guang occurring on existing consumption market, highlighted, diversified metal shell and surface metal plating outward appearance obtains consumer's favor.So for example mobile phone is exactly.
It has been not merely a simple means of communication till now that mobile phone develops, and through the differentiation of science and technology for many years, is developed into and is had online by single communication function, navigation, real-time video, wireless transmission, the high-intelligentization terminal that the functions such as communication are integrated, possesses the function of computer completely.Along with the lifting of mobile intelligent, handset structure space is occupied by different electron process elements, the mobile phone single antenna of high intelligence cannot meet the multi-functional use simultaneously of smart mobile phone, and mobile signal quality quality also directly has influence on mobile phone service quality simultaneously.High-quality at a high speed,, high definition signal source is to weigh the hard standard of mobile phone quality, for guaranteeing stability and the multi-functional harmony of mobile phone signal, mobile phone can use many signal receiving units (antenna), for example: the antenna of the difference in functionalitys such as BT port, GSM port, GPS port and 3G (WCDMA) port.In the time of Antenna Design, according to the function of signal source, the position to antenna and shape also have different requirements.When design, want the sufficient fail safe of considering use, reasonability, feasibility, chronicity etc.
For preventing that diversified mobile phone technique (as: cell phone appearance all-metal) from having influence on mobile phone result of use, conventionally can or be printed on product surface by antenna for mobile phone assembling, strengthen mobile communication signal.But antenna assemblies or be printed onto behind material surface, antenna can protrude product surface.When spraying, paint is levelling normally, and product surface is uneven, causes bad order.For improving sprayed surface effect, when spraying priming paint, add sanding operation, dirt pits, particle after sanding also cannot thoroughly clean, and cause deficient manufacturing procedure simultaneously.Increase after production process, because of sanding technical factor, cannot improving product production capacity.Cause that production capacity is low, personnel and utilization rate of equipment and installations low, paint loss is high.
In prior art, have a kind of LDS(laser direct forming of antenna for mobile phone processing) technique, on the hand set machine shell that antenna can be processed: after hand set machine shell injection moulding completes, can pass through LDS processes antenna on hand set machine shell surface.This technique is relatively applicable to antenna for mobile phone and is built in the situation in mobile phone center or back cover, because it can not cause bad and affect mobile phone overall appearance cell phone appearance.But antenna is processed behind mobile phone surface now, and antenna position can protrude cell-phone function face, and after surface treatment, antenna position can produce convex closure and concave, affects the outward appearance of hand set machine shell, this LDS technique has lost technique and has been worth.
For solving this problem of LDS technique, application number is that 201310145654.9 Chinese patent application proposes a kind of electronic equipment casing, the same LDS technique that adopts, but different is, it forms in the lump a day line groove in the process of laser activation, the LDS antenna thickness obtaining on electronic equipment casing is not more than the degree of depth of the groove that laser activation forms, thereby has avoided LDS antenna to give prominence on electronic equipment casing surface, has kept the attractive in appearance of electronic equipment casing.
But the electronic product casing that the technique proposing in this Chinese patent application processes also has problems: because LDS uses laser to carve the circuit vestige of antenna at thermoplastic composite element surface, by laser, the organic metal additive in this thermoplastic is activated, metal particle in organic metal additive is exposed to the circuit vestige surface of element, finally element is carried out to the coat of metal through the part of laser activation, thereby formed the antenna for mobile phone of given shape at element surface.Process so dark groove by such technique, not only waste time and energy, and, owing to will forming metal activation layer in its groove, so need to adopt the thermoplastic composite that contains metallic particles, the requirement of material is improved greatly.
Therefore, electronic product casing of the prior art all exists Improvement requirement.
Embodiment
The electronic product casing of the present embodiment as Figure 1-4, it comprises outer cover body 1, first to fourth antenna 2,3,4,5, on outer cover body 1, be provided with the groove for placing respectively first to fourth antenna 2,3,4,5, described antenna is arranged in the groove in outer cover body 1 outer surface, its upper surface is concordant with the upper surface of outer cover body 1, in described concordant upper antenna surface be also provided with coating above outer cover body upper surface.
The said goods can be produced as follows: provide one or more sets antenna for mobile phone need assemble or be printed on surperficial plastic rubber shaping mould, at the groove of the reserved respective depth of antenna shaping position, the antenna of need assembling or printing is processed in surface of plastic product or inboard wall groove, and the existing spray treatment of effects on surface; Its spraying coating process is: in priming paint+middle paint 1+, paint and in 2+, paint 3+ finish paint.Cancel the production process that needs to carry out sanding in spraying process.
Its concrete technology step comprises:
One, injection mold designs in die sinking 3D map file: its design is: the installation site that first will design according to the effect of antenna antenna, the design of antenna will be away from the main body section of battery, and to avoid deformation of products to cause the loose contact of antenna and affect use, when design, antennal interface position approaches mobile phone main body edge part as far as possible, allow it more firmly be combined with cell phone mainboard, reduce and stop antenna for mobile phone in the time carrying out signal source transmission and receive, electronic signal conductively-closed thing (for example: hand set machine shell or electronic building brick) shielding, and deposition produces Electrostatic Electron, cause the weakening of loss of signal source.Antenna for mobile phone is designed in case surface simultaneously, can strengthen mobile phone signal intensity, avoid the generation of Electrostatic Electron.By the structural requirement of cell-phone function and being accustomed to machine of user, the structural design of antenna for mobile phone is avoided the impact on normal handset structure as far as possible, and fully user's custom is considered on structure and position.For example: hand is taken the custom of mobile phone location, when call, mobile phone signal is reduced to the factor such as minimum to the injury of human body.In the time of Cell Phone Design and Antenna Design, corresponding influencing factor is verified and analyzed, rationally use, and its design concept and theory are used in Design of Dies, injection mold just needs reserved day line groove in the time that the design of die sinking 3D map file generates, and antenna position is carried out to product structure design, the functional verification of antenna pattern and position, the most deeply should adapt to the thickness of antenna own at the reserved position of antenna, the widest width that will adapt to antenna itself, product making antenna reserved location need be worked in coordination with antenna, antenna pattern can be just, can justify, can be greatly, can be little.When design, to consider that antenna can not occur tension, crosses pine and exceed the phenomenon of product surface plane, and look after subsequent technique: its tolerance etc. will adapt to directly antenna directly be processed (installing, change the process of surface treatment such as plating, plating, printing) technological requirement in groove.
Two, injection mould processing: first need to select materials according to the structure of mould and effect, and process by following operation.1, sawing sheet: front mould material, rear mold mould material, mold insert material, line position material, injection moulding work oblique top material; 2, open frame: front mould is framed, rear mold is framed; 3, open slightly: front mould die cavity is opened slightly, rear mold die cavity is opened slightly, die parting line is opened slightly; 4, copper public affairs: front mould copper injection mold material public affairs, rear mold copper public affairs, the clear angle of die parting line copper public affairs; 5, line cutting: mold insert die parting line, copper public affairs, oblique top pillow position; 6, computer gong: injection mold essence gong die parting line, smart gong rear mold core rod; 6, electric spark: front mould is thick, copper is public, the clear angle of male model line, the rear mold position of bone, an injection moulding position, pillow position, boring, pin hole, thimble; 7 line positions, line position are pressed the utmost point: the multiple thimble of oblique top, injection mould processing are joined thimble; 7, other: 1. Zo chew, code mould hole, rubbish pin (position-limited needle); 2. fly mould; 3. the mouth of a river, fastener, spring, injection mold cost analysis fortune water (this is specialized vocabulary); Polishing, polishing, front mould, the rear mold position of bone; Quench in thin water-bound, pull bar screw drag hook, spring injection moulding Weifang, line position is surfaces nitrided, repair a die and carve characters.(note: when computer gong processing core rod, first product 3D is carried out to explosion analysis, then map file is converted to 2D, according to map file every (size, shape, outward appearance, technological requirement) processing request, in process equipment, carry out processing technology program setting, and complete core rod moulding by map file parameter request.) (above flow process is existing technique, just in the time of processing core rod, just antenna reserved place can be carried out to shape processing, also be just that postorder is in the time of making antenna, guarantee that antenna and product casing form entirety, in the time carrying out surface treatment (spraying), product casing can not produce the bad orders such as recessed bag and convex closure.Note: " copper public affairs ", " Zo chews " etc. are the vocabulary of industry universal.)
Processing request: mould die is in the time of smart gong processing core rod, need carry out fine finishining according to product structure, common conventional planar structure product is mainly datum level or etched surface with smooth light face, and while keeping surface treatment (spraying), the levelability of paint reaches Gao Guang, highlighted and flatness is consistent.According to mobile phone overall design and surface treatment effect demand, guarantee that mobile phone use procedure mobile phone signal is not subject to structure influence and causes to use and perplex.We add man-hour at designing mould, and situation and the reason that just rear technique can be produced to convex closure and concave join in design concept, when designed graphic document, antenna traveling and planform are conceived.During with computer gong processing mold core rod, carry out antenna traveling and structure processing on hand set machine shell surface, guarantee the consistent of antenna structure and shape, after making antenna, antenna and hand set machine shell unite two into one, antenna becomes as a whole with hand set machine shell, and can not have influence on rear operation surface treatment time, surface can not produce convex closure and concave yet, after surface treatment (spraying), mobile phone whole structure is consistent, and antenna is embedded in spraying bottom completely, and appearance be can't see any open defect.
Three: injection molding machine moulding: antenna has been designed to the injection mold of processing in mould and be arranged on forming machine, according to injection mo(u)lding and injection raw material technological requirement, adjusted injection molding parameter, completed product injection mo(u)lding.Simultaneously because sky line groove is designed in injection mold, as long as injection raw material that can injection molding moulding can be processed as product, the injection moulding of cell phone type shell is main or take PC material as main conventionally.
Four: antenna for mobile phone processing: antenna for mobile phone is directly added in to Mobile phone plastic part surface or inwall, has following several optional modes:
Mode 1---hot melt: the integrated antenna that the sheet metal of copper sheet or analog material or Raw material processing are completed, first antenna is attached on the product of reserved day line groove with rubberizing or some glue, antenna pattern need with product reserved location shape, the degree of depth, width and outward appearance are consistent, and to mobile phone case surface (note: thermosol equipment maximum temperature can not exceed 300 ℃), (prior art is substantially namely processed (stickup) in mobile phone center or back cover inner surface by antenna by thermosol equipment high temperature thermosol, because having phone housing substantially, protects inner surface, its resistance to wear, the test requests such as anti-corrosive properties all require low than outer surface, and without doing surface treatment.) after product antenna machines, carry out conductive test, will proceed to lower operation by the product of conductive test.
Mode 2---Vacuum Deposition: by molded good shell; first with tool, the position that does not need conduction is protected; prevent from flying to plate phenomenon; and product is fixed in coating machine; set process conditions and technological parameter; pack plated film raw material silver or other oxidation-resistant material into, product carries out vacuumizing phase, when vacuum degree reaches 4.0 × 10
-2pa(vacuum degree can be adjusted according to product requirement, absolute figure) time, carry out aura cleaning (a kind of discharge process of high current low voltage), after aura has cleaned, plated film raw material proceed to preheating (being exactly that plated film raw material are heated up), after preheating completes, carry out molten (be exactly plated film raw material by solid-state be converted into liquid process) in advance, be dissolved in advance and enter evaporating state, coating process completes.Complete the processing of antenna conducting position.After product antenna machines, carry out conductive test, will proceed to lower operation by the product of conductive test.
Mode 3-printing: first print printing down by designing perfect antenna for mobile phone, printing down complete (this is the third antenna molding mode, with front two projects be all independently.Carry out the processing of product antenna, first product is fixed on print station, reserve position, process antenna (stand-alone antenna moulding) with electrically conductive ink on product, after machining, product is placed in baking box and adds roasting 75 ± 5 ℃, duration is 60Min.After product antenna machines, carry out conductive test, will proceed to lower operation by the product of conductive test.
Fig. 1-4th, has processed each view of the phone housing of antenna.Wherein 1 is phone housing main body, 2 is the first antenna, 3 is the second antenna, 4 is third antenna, 5 is the 4th antenna, and wherein the pit depth of first day line position is 15 μ m, and the pit depth of the second aerial position is 13 μ m, the pit depth of third antenna position is 20 μ m, and the pit depth of the 4th aerial position is 17 μ m.
Five: mobile phone surface treatment (spraying): first product is arranged on Special spray coating tool, fixes; Make surface-treated product surface with clean non-dust cloth cleaning requirement, then by clean product, be placed on spraying line body and carry out surface oil paint spray treatment, its spraying coating process is: in protective paint+priming paint+middle paint 1+, paint and in 2+, paint 3+ finish paint.First spray ground floor protective paint, dry; Spray again priming paint, dry; Spray each middle paint, dry; Topcoating, dry; Blanking is examined entirely.Wherein, protective paint main component is modified grease, auxiliary agent and organic solvent; Priming paint main component is synthetic macromolecule resin, natural resin, dyestuff, auxiliary agent and organic solvent; Middle paint main component is synthetic macromolecule resin, natural resin, auxiliary agent and organic solvent; Finish paint main component is synthetic macromolecule resin, natural resin, auxiliary agent and organic solvent.
The utility model product, owing to having adopted special structure, makes it possible to adopt above-mentioned technique, thereby has following outstanding feature:
1, can revise its surface treatment manufacturing procedure, cancel polishing (sanding) operation.Previously another day when line not, antenna assemblies is on casing surface, when spraying, because of paint, to cover property cover poor, antenna position can the 100% recessed bag of appearance or convex closure bad, be the yields of guaranteeing that mobile phone is certain, in the time having sprayed priming paint, product can be removed from production line body, polish in recessed bag or convex closure position to antenna position, guarantee evenness and the consistency of antenna position and product.Improvement by the utility model to product structure, can add man-hour at product in early stage, just antenna projection is reserved, and be processed as groove, in the time of antenna processing and forming, antenna and mobile phone shell unite two into one, molten is a burnishing surface, in the time of spray oil, without polishing, can not produce recessed bag or convex closure bad, therefore polishing operation can be cancelled yet.
2: can make surface spraying time, spraying coating process processes at one time.First, can produce recessed bag or convex closure during because of antenna and mobile phone spray finishing, need manually repair (polishing) to recessed bag or the convex closure of antenna position having sprayed priming paint for guaranteeing yields, now because of architecture advances of the present utility model, while making its technique can guarantee spraying, antenna is integrated with hand set machine shell is molten, recessed bag or convex closure etc. can not produced again bad, therefore after no longer needing to have sprayed, more lower extension polished.After having beaten, then reach the standard grade and carry out priming paint, middle paint, finish paint spraying.After improvement, because not needing to polish again, so when spraying can be collinear disposable priming paint, middle paint, finish paint be machined.
The present embodiment can reduce manufacturing cost (paint, line body, personnel), reduces and manufactures operation, and improving product yields, guarantees that product appearance is attractive in appearance.Be described as follows:
1. reduce production costs: can reduce or cancel product polishing operation;
2. can promote personnel's utilance, save manpower man-hour: while saving blanking+sanding (10PCS/ people/H)+charger;
3. reduce manual operation error bad: polishing needs artificial participation conventionally, and the present embodiment has been saved this operation;
4. improving product yields: effectively reduce the bad and antenna of dirt pits, particle that product polishing produces and protrude the bad order causing.Experiment confirms, promotes 20-30% before the comparable improvement of yields.
5. environment cleanliness between lifting car: workshop overall situation cleannes promote.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of ordinary skill in the field; without departing from the concept of the premise utility; can also make some being equal to substitutes or obvious modification, and performance or purposes identical, all should be considered as belonging to protection range of the present utility model.