【正文】
澆口位置的設置、模具工件零件的結構設計、側向分型與抽芯機構的設計等內容。 通過我們的塑件產品分析: H=25++8=( mm) 符合 S≥ H,可得該注射機符合要求。 當開模行程與模具厚度無關時 這種情況主要是指鎖模機構為液壓 機械聯(lián)合作用的注射機,其模板行程是由連桿機構的做大沖程決定的,而與模厚度是無關的。由于注射機的鎖模機 構不同,開模行程可按以下兩種情況進行校核:一種是開模行程與模具厚度無關;二種是開模行程與模具厚度有關。) . A 分 =*292*4+6*96+14*4*2= ∴ F 鎖≥ F脹 =A 分 P型 = 30 =*105( N) ≥ 250( KN)。我們這里選 P 型 =30Mpa。 3. 3 鎖模力的校核 鎖模力是指注射機的鎖模機構對模具所施加的最大夾緊力,當高壓的塑料熔體充填模腔時,會沿鎖模方向產生一個很大的脹型力。而該型號注塑機公稱壓力 P 為 119Mpa。 ( 2)根據(jù)模具型腔能否充滿與最大注射量關系,利用 UG 軟件測量得: V塑件: =(**282)*+(**282)**1/3 =*+ ≈ V塑件(總) =*4= 20%塑件 =*20%= 因 此 公 稱 注 射 量 =(+)/= = 查 [1]ρ 100 表 41,選注塑機 XSZ30,此型號表示液壓注射成型機,其公稱注射量為 30cm3. 符合 V 實< V公。 公稱注射量的注射機型號,然后依次對該機型的公稱注射壓力、公稱鎖模力、模板行程以及模具安裝部分的尺寸一一進行校核。 畢業(yè)設計(論文) 10 第三章 模具與注射機的關系 模具型腔能否充滿與注射機允許的最大注射量密切相關,設計模具時,應保證注射模內所需熔體總量在注射機實際的最大注射的范圍內。 注射速度:中高速度。(模具溫度將影響塑件光潔度,溫度較低則導致光潔度較低)。 熔化溫度: 210~ 280℃ ;建議溫度: 245℃ 。建議干燥條件為 80~ 90℃ 下最少干燥 2 小時。取 %。根據(jù)用途確定材料,查 [1]ρ 41 選用 ABS料,即 丙烯腈 丁二烯 苯乙烯共聚物 。隨著模具設計與制造技術的迅猛發(fā)展,塑料成型模具將趨向于高效率、自動化、大型、精密、長壽命的方向發(fā)展。第二,制造方面要求結構合理,容易制造,而且成本要低。它包括三個方面的內容。尤其是塑料模具,在所有模具的總產量中所占的比例越來越大,對經(jīng)濟的發(fā)展起著十分重要的作用。s rapid economic development, the use of mold production technology to be widely used. The pletion of a threeyear university courses and learning courses, internship, I skillfully mastered the mold materials and surface treatment, Metal Technology, mechanical design basis, with tolerances and measuring technology foundation, Master cam model and NC programming, pro / e modeling and mold design, Plastic Molding Process and mold design, mold manufacturing technology, processing technology and CNC programming, stamping and plastic pressure equipment and other professional courses and specialized courses based on the knowledge to mold manufacturing, The technology has a systematic and prehensive understanding to achieve the purpose of the study. Die design for the highly practical nature of the design issues, we conducted a lot of training. After the River Vocational Technical School Training Center production internship especially in Panyu District, Guangzhou Yong Die Limited attachments, I die especially plastic mold design steps with a brand new understanding, Die enriched the various movements of the structure and process knowledge, As for the mold manufacturing process is achieved a breakthrough. The instructor and with the assistance of the factory on the master, onsite inspection at the same time a lot of relevant information and personally disassembly of the typical mold entities, clear of the mold of the general principle, manufacture, Process UB in the library and borrow a lot of relevant manuals and books, design, will make full use of and access to various kinds of information, and with the students to fully discuss and make the greatest efforts to improve the current graduation design. 畢業(yè)設計(論文) 6 In the design process, there will be some difficulties, but there instructor and the guidance of their efforts, I believe the successful pletion of the graduate design tasks. As students is limited, but the lack of experience, design wrong with this unavoidable, the teachers are willing to please correct me. 畢業(yè)設計(論文) 7 第一章 緒論 模具是工業(yè)生產的重要工藝裝備,它被用來成型具有一定形狀和尺寸的各種制品。由于學生水平有限,而且缺乏經(jīng)驗,設計中不妥之處在所難免,肯請各位老師指正 。并在圖書館借閱了許多相關手冊和書籍,設計中,將充