Kumaha mésér mesin suntik china anu cocog

Sacara umum, lolobana nasabah anu geus kalibet dina industri suntik molding salila sababaraha taun, have the ability to judge for themselves and choose the suitable china mesin suntik to produce. Nanging, dina sababaraha kasus, konsumén bisa jadi butuh pitulung produsén urang dina mutuskeun nu mesin suntik molding ngagunakeun, or even the customer may just have the sample or idea of ​​the product and then ask the manufacturer. whether the machine can be produced or which model is compared.

Salaku tambahan, some special products may require special devices such as pressure accumulators, loop katutup, komprési suntik, jsb., to be produced more efficiently. It can be seen that how to determine the appropriate injection molding machine to produce is an extremely important question. The following information is provided for the convenience of readers.

Important factors that generally affect the selection of an injection machine include molds, produk, palastik, syarat molding, jsb. Ku sabab kitu, the following information should be collected or available before making a selection:

◆ kapang ukuran (lebar, jangkungna, kandelna), beurat, desain husus, jsb. ;

◆ Type and quantity of plastic dipaké (a single raw material or several plastics);

Ukuran penampilan (panjangna, lebar, jangkungna, kandelna), beurat, jsb. injection molded product;

After getting the above information, you can follow the steps below to select a suitable injection machine:1. Choose the right model: the model and series depend on the product and the plastic. Because there are many types of china mesin suntik, it is necessary to determine correctly from which injection molding machine or series the product should be initially made, such as common thermoplastic or bakelite raw materials or PET raw materials. Warna, dua-warna, multicolor, interlayer atanapi warna campuran, jsb. Salaku tambahan, sababaraha produk merlukeun kaayaan kayaning stabilitas tinggi (loop katutup), high accuracy, very high fire, high firing pressure or fast production (multi-loop), and a suitable series must also be selected for production.

2. Ieu bisa nempatkeun handap: the mold size determines whether the “large column inside distance”, “ketebalan kapang”, “ukuran kapang minimum” jeung “ukuran plat kapang” of the machine are suitable to ensure that the mold can be put down.

◆ The width and height of the mold must be less than or at least one side smaller than the inside distance of the large column;

◆ The width and height of the mold must correspond to the minimum mold size recommended by the injection molding machine and is too small.

3. It can be obtained: the mold and the final product determine whether the “mold opening strokes” jeung “mold strokes” are sufficient to remove the final product.

◆ The opening stroke of the mold must be at least twice the height of the final product in the direction of opening and closing of the mold, and the length of the casting must be included;

4. The clamping unit that can lock the injection machine must provide enough “kakuatan clamping” pikeun nyegah kapang tina dibuka. Itungan sarat gaya clamping nyaéta kieu:

◆Calculate the projected area of ​​the finished product in the direction of the switch mold from the appearance size of the finished product;

◆Mould support force = projected area of ​​the finished product in the direction of the switch mold (cm2) × jumlah Rongga kapang × tekanan dina kapang (kg / cm2);

◆The pressure in the mold varies with the raw material, and the general raw material is 350～400kg/cm2;

◆The clamping force of the machine must be greater than the clamping force, sareng demi kaamanan, gaya clamping mesin biasana 1.17 kali langkung ageung tibatan gaya clamping.

5. Makéna pinuh: Nangtukeun anu diperyogikeun “volume suntik” tina beurat produk atos sareng jumlah rongga kapang sareng pilih anu pas “diaméterna screw”.

◆The number of mold cavities (hiji kapang jeung sababaraha rongga) kedah diperhatoskeun nalika ngitung beurat produk réngsé;

◆For the sake of stability, the injection volume must be 1.35 kali beurat produk réngsé, éta, beurat produk rengse kudu dina 75% tina volume suntikan.

6. Suntikan anu saé: the conditions of “ratio komprési screw” jeung “tekanan suntik” ditangtukeun ku plastik. Sababaraha plastik rékayasa ngabutuhkeun tekanan suntik anu langkung luhur sareng desain rasio komprési screw anu cocog pikeun gaduh épék cetakan anu langkung saé. Ku sabab kitu, Pikeun nyieun produk rengse makéna hadé, the injection pressure requirements and compression ratio issues must also be considered when selecting the screw. .

7.7. Shooting fast: and confirmation of “laju némbak”. Sababaraha produk réngsé peryogi tingkat suntikan tinggi sareng suntikan gancang pikeun nyetak stabil, sapertos produk réngsé ultra-ipis. Dina hal ieu, panginten kedah mastikeun naha tingkat suntikan sareng tingkat suntikan mesin cekap, sareng naha éta kedah dilengkepan tekanan akumulator, kontrol loop-tutup sareng alat-alat sanés. Sacara umum, dina kaayaan anu sami, sekrup anu tiasa nyayogikeun tekanan suntikan anu langkung luhur biasana ngagaduhan kecepatan shot anu langkung handap, sabalikna, sekrup anu tiasa nyayogikeun tekanan suntikan anu langkung handap biasana gaduh kecepatan shot anu langkung luhur. Ku sabab kitu, nalika milih diaméter screw, polumeu suntikan, tekanan suntikan sareng tingkat suntikan (kagancangan suntikan) kedah dipertimbangkeun sareng dipilih.

Salaku tambahan, desain multi-loop ogé tiasa dianggo pikeun nyingkat waktos cetak ku tindakan sanyawa anu disingkronkeun. Saatos léngkah di luhur, pokokna, mesin cetak suntikan anu nyumponan sarat tiasa ditangtoskeun, but there are some special issues that must be considered:

◆The problem of size matching:

Dina kaayaan khusus anu tangtu, kapang customer urang atanapi produk mungkin gaduh ukuran kapang leutik tapi sajumlah ageung shot, atanapi ukuranana ageung ageung tapi sakedik shot. Dina hal ieu, spésifikasi standar anu ditetepkeun ku pabrikan panginten henteu sayogi. Pikeun nyumponan kabutuhan pelanggan, disebutna “ukuran cocog” kudu dilaksanakeun, éta, “témbok gedé ditémbak leutik” atawa “témbok leutik ditémbak gedé”. Anu disebut “témbok ageung sareng suntikan alit” nujul kana unit dieusian clamping standar asli sareng sekrup suntikan anu langkung alit. Sabalikna, éta “témbok leutik sareng suntikan ageung” nujul kana unit clamping standar asli sareng sekrup suntik anu langkung ageung. Tangtosna, meureun aya sababaraha tingkatan bédana antara kapang clamping sareng suntikan.

Dina panggunaan anu saleresna, beuki seueur nasabah bakal naros mésér anu disebatna “mesin gancang-gancang” atawa “mesin gancang”. Sacara umum, salian ti kabutuhan produk éta sorangan, kaseueuran targétna nyaéta pikeun ngingetkeun siklus citakan sareng ningkatkeun kaluaran per unit waktos, kukituna ngirangan biaya produksi sareng ningkatkeun daya saing. Umumna, to achieve the above-mentioned purpose, there are several ways:

1. Speed ​​up the kagancangan suntikan: ningkatkeun motor sareng pompa, atanapi nambihan akumulator tekanan (langkung saé kontrol loop tertutup);
2. Speed ​​up the feeding speed: increase the motor motor and pump, atanapi ngirangan motor hidrolik nyoco pikeun nyepetkeun laju sekrup;
3. Multi-loop system: adopts double-loop or three-loop design to perform compound actions simultaneously to shorten the molding time;
4. Increase the mold waterway to improve the cooling efficiency of the mold.

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