影響注塑模具產(chǎn)品冷卻成型的原因有很多比如注塑模具的形狀、分型面的設(shè)計(jì)、冷卻介質(zhì)的種類、溫度、流速，冷卻管道的幾何參數(shù)及空間布置，模具材料，熔體溫度等等。注塑模具產(chǎn)品要求頂出溫度和模具溫度、塑件和模具間的熱循環(huán)交互作用。

Effect of injection mold cooling molding products for many reasons such as the shape of the injection mold, parting surface design, cooling medium type, temperature, velocity, geometry and spatial layout, cooling pipe mold material, melt temperature and so on. The injection mold product requires the interaction between the top temperature and mold temperature, the thermal cycling between the plastic and the die.

山東模具制造廠家，濟(jì)南注塑模具， 濟(jì)南注塑加工 http://www.sdlqmj.com/

（1）低的模具溫度可降低塑件的成型收縮率。

(1) low mold temperature can reduce the molding shrinkage of plastic parts.

（2）模具溫度均勻、冷卻時(shí)間短、注射速度快可以減小塑件的翹曲變形。

(2) die temperature uniformity, short cooling time, injection speed can reduce the warpage of plastic parts.

（3）對(duì)于結(jié)晶性聚合物，提高模具溫度可使塑件尺寸穩(wěn)定，避免后結(jié)晶現(xiàn)象，但是將導(dǎo)致成型周期延長(zhǎng)和塑件發(fā)脆的缺陷。

(3) in order to improve the mold temperature, the crystal size of the polymer can be stabilized and the post crystallization phenomenon can be avoided, but it will lead to the defects of the forming period and the brittleness of the plastic parts.

（4）隨著結(jié)晶型聚合物的結(jié)晶度的提高，塑料的耐應(yīng)力開裂性降低，因此降低模具溫度是有利的。但對(duì)于高粘度的無定型聚合物，由于其耐力開裂性與塑件的內(nèi)應(yīng)力直接相關(guān)，因此提高模具溫度和充模速度，減少補(bǔ)料時(shí)間有利的。

(4) with the increase of crystallinity of crystalline polymer, the stress cracking resistance of plastics is reduced. However, for the high viscosity amorphous polymer, because of its resistance to cracking and the internal stress of the plastic parts directly related to the mold temperature and mold filling speed, reduce the feeding time is favorable.

（5）提高模具溫度可以改善塑件的表面質(zhì)量。模具溫度的確定注射成型工藝過程中，模具溫度直接影響到塑料的充模、塑件的定型、模塑周期和塑件質(zhì)量。而模具溫度的高低取決于塑料結(jié)晶性、塑件尺寸與結(jié)構(gòu)、性能要求以及其它工藝條件如熔料溫度、注射速度、注射壓力和模塑周期等。

(5) improve the mold temperature can improve the surface quality of plastic parts. The mold temperature determines the injection molding process, the mold temperature directly affects the plastic filling, plastic parts, molding cycle and plastic parts quality. The mold temperature depends on the crystallinity of plastic, plastic parts size and structure, performance requirements and other process conditions such as melt temperature, injection speed, injection pressure and molding cycle, etc..

對(duì)于無定型聚合物，其熔體在注入模腔后隨著溫度的降低而固化，但并不發(fā)生相的轉(zhuǎn)變，模溫主要影響熔體的粘度，即充模速率。因此，對(duì)于熔融粘度較低和中等的無定型塑料如聚苯乙烯、醋酸纖維素等，采用較低的模具溫度可以縮短冷卻時(shí)間。

For amorphous polymers, the melt is solidified with the decrease of temperature after injection into the mold cavity, but no phase change occurs. Therefore, it is possible to shorten the cooling time for low - and medium - melting amorphous plastics such as polystyrene and cellulose acetate.