成型工藝流程及條件介紹(注塑技術(shù)英語大全)-資料下載頁
2025-08-06 01:12本頁面
【正文】 the vertical thickness of product. Back 頂退包括兩個過程與頂落的過程基本一致,頂退的終點應(yīng)預(yù)留13cm的空間,以保護(hù)頂針油管不被頂壞. The same as knocking out, ejector back includes 2 steps. To protect the ejector oil jar, it should make a 13mm distance in the ending point of ejector back. ,單次頂及頂針停留的選擇,機械手取產(chǎn)品,脫模順利的情況都采取多項,為了頂針油缸 壽命的延長,多次頂就以不超過三次為宜,頂針停留一般用在頂針帶著產(chǎn)品退回有可能對增品產(chǎn)生損傷的模具,同時為配合機械手使用,有時也需要較短的頂針停留. The way of knocking out includes knocking out once, Knocking out repeat and ejector delay. Take product by manipulator or take product easy, it should select knocking out once. To longer the work time of ejector oiljar, times of knocking out lower 3 times. Ejector delay used when product will be damaged if ejector back or suit manipulator. 成型時間的設(shè)定 Molding time setting 在保證產(chǎn)品質(zhì)量的前提下,周期時間是越短越好,周期時間又包括如下幾項:射膠時間,保壓時間,熔膠時間,冷卻時間,頂出時間,鎖模低壓時間,甚至乎關(guān)系到時間因素的還有還開模與鎖模,及頂出的快慢. Cycle time should shorter on condition that product quality well. Cycle time includes: injection time , holding pressure time, plastic time, cure time, knocking out time and mold protect time. Even mold opening closing sopeed and knocking out speed affect cycle. ,一般看起來,射膠時間越長,產(chǎn)品越飽和,但我們在講求質(zhì)量時,同時也須考慮產(chǎn)能,更何況,射膠時間過長,有可能會造成產(chǎn)品過于飽滿而尋致粘模頂?shù)淖冃螀沾缙蟮纫幌盗袉栴},故我們在設(shè)置射膠時間時應(yīng)綜合考慮,盡量在合乎質(zhì)量要求時縮短射膠時間. Injection time consists holding pressure time. Longer injection time, fuller product, we should consider production quantity when we suit for quality. If injection time too long, it may cause a series of defects suck as flash strain. So all sorts of factors should be considered, injection time should be shout if quality suit for requirement. ,背壓設(shè)定的大小,但有一點,熔膠時間控制的長短一定要比冷卻時間短. Plastic time depends on plastic speed and screw back pressure, but plastic time must shorter than cure time. :冷卻時間的長短直接影響到成型的周期,冷卻時間越長,成型時間就越長,造成產(chǎn)能就越低,故我們在設(shè)定高壓冷卻時間時,只要能保證到產(chǎn)品成型順利,不會直接影響到變形等問題,設(shè)定的時間也是越短越好. Cure time: Cure time affects molding cycle. Longer cure time, longer molding cycle, lower production quantity. So it sets cure time short on condition that product molding succed and can’t deformation.. ,我們的頂出時間一般是與機械手配合為宜,半自動生產(chǎn),如因頂針退回會導(dǎo)致產(chǎn)品掉落或卡緊,而取不下產(chǎn)品,停留時間則應(yīng)保持5秒左右. In PCE pany, for using manipulator in abundence , knocking out time suits manipulator, Knocking out delay keeps second when using manipulator fullmanipulator, knocking out delay keeps about 5 second when using manipulator semimanipulator and product will fall or can’t be taken off if ejector back. ,模具安全起很大作用,配合好模具低壓位置和低壓壓力的調(diào)整,低壓保護(hù)的時間應(yīng)取13秒,保護(hù)時間越短,可能造成的危害則越小. Lowpressure protect is very important for safety and protect mold, Mold protect time should adjust within 13 second suit low pressure and position of mold protect, shorter protect time, make damaged.
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