本課題完成250g中小型注塑機的液壓系統(tǒng)設計。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。本次設計主要完成了以下設計內容：注射成型原理和理論研究及注射成型工藝過程分析； SZ—250型注塑機節(jié)能低耗高效的液壓系統(tǒng)設計，繪制工作原理圖；液壓結構設計與繪圖。液壓缸設計中，缸體與缸蓋采用外半環(huán)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(xiàn)泵與鐘形罩的連接，鐘形罩再與帶發(fā)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。
關鍵詞：注塑機 液壓系統(tǒng) 液壓缸 鐘形罩
Abstract
The completion of this subject 250g small injection molding machine hydraulic system. Plastic injection molding is a thermoplastic products, processing equipment, it will heat melting plastic particles, high speed injection mold cavity, after some time packing, cool molding for the plastic products. This design was completed for the following design elements: principles and theoretical study of injection molding and injection molding process analysis; SZ-250 injection molding machine, low power and highly efficient energy-saving hydraulic system design, schematic drawing of work; hydraulic structure design and drawing. Hydraulic cylinder design, the cylinder block and cylinder head connection with external half-ring, piston rod and piston screw thread used to connect modular structure. The structure of hydraulic control unit integrated with block block design, made of 6-sided universal manifold block (Manifold). This design uses vertical installation of the bell jar, pump the shaft through the pump flange to achieve the connection with Bell, Bell again and vertical motors with flange connection, relying on the only bell-shaped hood hydraulic pump and motor mouth to ensure concentricity.
Key words: Injection molding machine Hydraulic System Hydraulic cylinder Manifold Bell
目錄
第一章緒論1
1.1注塑機概述1
1.2塑料注射機的工作循環(huán)塑料1
第二章 SZ-250型注塑機液壓系統(tǒng)設計2
2.1SZ-250型注射機液壓系統(tǒng)設計要求及有關設計參數(shù)2
2.2液壓執(zhí)行元件載荷力和載荷轉矩計算2
2.3液壓系統(tǒng)主要參數(shù)計算4
2.4制定系統(tǒng)方案和擬定液壓系統(tǒng)圖6
2.5液壓元件的選擇9
2.6液壓系統(tǒng)性能驗算11
2.7液壓缸的設計16
第三章液壓集成塊的設計22
3.1塊式集成的結構22
3.2塊式集成的特點22
3.3塊式集成液壓控制裝置的設計22
第四章SZ-250型注塑機動力裝置的設計28
4.1 SZ-250型注塑機液壓站的設計28
4.2液壓油箱的設計29
4.3液壓泵組的結構設計32
總結與展望34
致 謝35
參考文獻36