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塑料注射成型機是熱塑性制品的成型加工設備,它將顆粒塑料加熱熔化后,高壓快速注入模腔,經一定時間的保壓,冷卻后成型為塑料制品。250型注塑機節能低耗高效,液壓缸設計中,缸體與缸蓋采用外半環連接方式,活塞桿與活塞螺紋采用組合式結構中的螺紋連接。液壓控制裝置的結構采用塊式集成設計塊式,做成通用化的6面體油路塊(集成塊)。本設計中采用鐘形罩立式安裝,通過液壓泵上的軸端法蘭實現泵與鐘形罩的連接,鐘形罩再與帶發蘭的立式電動機連接,依靠鐘形罩上的止口保證液壓泵與電動機的同軸度。