1.Pemilihan bahan cangkang ponsel
Cetakan ponsel itu mahal, dan harga bahan produk tidak terlalu mahal; peran cangkang di ponsel: itu adalah bingkai dukungan dari seluruh ponsel; memposisikan dan memperbaiki komponen elektronik; membawa semua bagian non-kulit lainnya dan membatasi. Cangkang biasanya dicetak oleh plastik rekayasa.
1. Bahan umum untuk cangkang
perut: fluiditas tinggi, murah, cocok untuk suku cadang dengan persyaratan kekuatan rendah (components not directly impacted and not subject to structural durability test in reliability test), such as the keypad frame (LCD frame) inside the mobile phone, dll. There are also commonly used in parts to be electroplated (seperti tombol, side keys, navigation keys, electroplated trim, dll.). Saat sekarang, Qimei pa-727, pa757 and so on are commonly used.
PC + ABS: good liquidity, good strength, moderate price. It is suitable for most mobile phone cases, as long as the structure design is more optimized, the strength is guaranteed. Ge color c1200hf is more commonly used.
PC: kekuatan tinggi, mahal, and poor liquidity. It is applicable to the case with high strength requirements (Misalnya, two shells in the flip phone that match the rotating shaft, two shells of slide rails and slideways in the slide cover machine without standard slide rail module, dll., so PC materials must be used at present). Ge Lexan exl1414 and Samsung hf1023im are more commonly used.
2. The following two points should be paid attention to in the application of materials:
Avoid reducing the risk of strength, and PC materials are used for any part, which leads to forming difficulties and cost increase;
In case of incomplete grasp of strength, the mold supplier should be clearly informed when the tool review is being reviewed. It may be possible to produce T1 products with PC + ABS first, but it is not excluded that PC materials will be used later when the strength is not enough. Lewat sini, the die supplier should consider the shrinkage and the drawing angle of special parts in the design of the mold.
Umumnya, the shell is composed of upper and lower shells. The upper and lower shell shapes can be coincident theoretically. Namun, due to the influence of manufacturing precision and injection parameters of the mold, the size of the upper and lower outer dimensions is inconsistent, itu adalah, surface scraping (surface shell is larger than the bottom shell) or bottom scraping (bottom shell is larger than surface shell). The acceptable surface scraping is less than 0.15mm and the bottom scraping is acceptable less than 0.1mm. When the zero section difference cannot be guaranteed, the surface shell of the product shall be larger than the bottom shell as far as possible. Secara umum, the surface shell has more key holes, and the forming shrinkage is larger, so the shrinkage is larger, umumnya 0.5%. The shrinkage of the bottom shell is smaller, so the shrinkage is smaller, umumnya 0.4%, itu adalah, the shrinkage of the surface shell is generally 0.1% larger than that of the bottom shell. Even if the two shells are of the same material, it is also necessary to remind the mold factory to take a smaller shrinkage rate when making the die.
3. In the manufacturing of digital camera mould, many mold products are also developed based on ABS + PC.
The general process of making silicone mold for mobile phone is as follows;
Preparation → rubber pressing → painting → stamping → radium carving → finished product packaging.
1. persiapan: penggilingan konvensional akan dilakukan, the raw rubber block to be manufactured and some ingredients (mainly color powder and other additives) are fully mixed, then extruded into plate shape, and then cut into the required strip rubber for later pressing
2. rubber pressing: it is easy to accident for the main process. If the rubber parts are very thin or narrow, it is possible to tear them when they are removed (the reason may be that the wall of rubber parts is too thin and too narrow, and the mold temperature is high at that time, tentang 100 ℃, and the rubber parts are too soft and the strength is not enough). See one side of the outer sealing part of buzzer in 2024 as an example; Pada waktu bersamaan, there will be a rough edge (which can not be punched in the subsequent process) like the forming of this kind of edge can not be removed.
3. Painting: pay special attention to painting. The rate of scrapping is very high. Umumnya, two coats of paint should be sprayed, which are of different colors for the later radium carving. After spraying, the next procedure will be followed
4. Stamping: it is to cut off the non flying edge and leave the key needed. Dalam proses ini, rubber can not be allowed to produce rough edges; sering, too small fillets will produce flying edges, one not less than 0.5mm.
5. Radium carving: laser carving is to lay the key flat, generally have the manufacturing tools and positioning, and then the laser carves out a layer of paint on the key, and calls out the words on the key, such as the number key, which is transparent; if it is two layers of paint, only one layer is carved out, leaving a layer, such as OK answer key, and the key is, one layer of paint is red, and the other is blue.
The method of making key characters of silica gel
The characters on the surface of the silica key generally have the following manufacturing methods:
1. screen printing: the screen and the bottom are divided. Saat mencetak, the surface of the key is generally sprayed, then the font and symbol of the screen printing are printed on it, and then the protective oil is sprayed. The bottom is generally transparent key, there are screen printing hollow word cover background color and screen printing solid font cover background color. For the key indicating that the arc surface is large, the method of transfer printing can be used, the font can be corroded on the steel plate, and the ink is transferred to the surface of the key with the glue head. The transfer printing is used in the toy industry.
2. if the characters require light transmission effect, most of them are spray and laser carving. After injection of transparent keys, spray ink on the surface of the key, then laser out the characters that can be transmitted through light, and then spray a layer of protective oil. For the red symbol, you can first shift red on the top of the key, and you need to print the whole surface. After spraying, you can print the ink on the surface to see red. Other colors are similar.
3. the buttons requiring electroplating effect can be used for water plating and vacuum plating. Saat sekarang, the common electroforming mold with Yin and Yang effect on many direction buttons is required. The boundary of the process is clear and the appearance is beautiful. It is the effect that can not be achieved directly by shading on the mold. Two color injection molding is generally used on a key that needs light transmission and electroplating. PC can not be electroplated, ABS can be electroplated. The requirement of two-color injection molding is to inject PC and ABS together. The place where ABS is electroplated is plating effect, and PC part can be transparent. Vacuum plating can also make light transmission symbols at present, but the effect of vacuum plating makes people feel more floating, no electroplating effect is good.
The surface of mobile phone button is usually a processing method for text processing on the surface of key painting. It is generally 0.04-0.06 in diameter. Then we fill the text with lines with spacing of 0.04-0.06. Lewat sini, we have developed a path for the laser. The laser can cut off the paint along the path.
If we want to do laser carving well, it is important to speed up, the method of filling light is not enough. Another way is to give the path of laser as CNC does. The boundary will be clear, because the laser will generate a large energy when triggering, which will cause the problem of breakthrough and the appearance of serration.
Tentang JasonMould Industrial Company Limited
Jasonmould adalah pembuat cetakan Cina dari cetakan plastik- cetakan injeksi, cetakan die casting, cetakan tiup plastik, cetakan rotasi, medis cetakan injeksi plastik, dua tembakan cetakan injeksi plastik, masukkan cetakan, overmolding, cetakan injeksi logam, cetakan injeksi mikro, cetakan injeksi bubuk, cetakan injeksi keramik, cetakan injeksi cair, cetakan injeksi husky, cetakan rumah tangga, pengecoran cetakan, alat cetakan mati, cetakan khusus, cetakan cina, perkakas prototipe cepat rapid, perkakas prototipe plastik plastic, perkakas tekan pukulan, mati dan perkakas untuk bagian ponsel / ponsel cell, bagian otomotif, penyedot debu, alat isi ulang, telepon, mesin fotokopi, komputer, speaker multimedia, dan banyak produk elektronik dan peralatan rumah tangga lainnya. Dan juga produsen produk plastik, produsen cetakan Cina- bagian-bagian yang terbuat dari plastik, tangki air plastik, bola plastik, wadah plastik, gesper plastik, jangkar plastik, gantungan plastik, sendok plastik, pemasangan pipa plastik, gelas plastik, peralatan makan plastik, gelas plastik, botol-botol plastik, nampan plastik, wadah kosmetik plastik, kotak plastik, wadah makanan plastik, kursi plastik, tutup plastik, penutupan tutup plastik, tabung plastik, pipa air plastik, kenop plastik, tabung plastik, kotak utilitas plastik, rak plastik dan sebagainya.
Kontak:
Orang: James Yuan
Perusahaan: JasonMould Industrial Company Limited
Menambahkan: Desa LongGang,Kota LongXi,Kabupaten BoLuo,Kota HuiZhou,Provinsi Guangdong, Cina
Telp: 86-752-6682869
Surel: [email protected]
Situs: https://www.jasonmolding.com/custom-injection-molding/
