塑料模具專業(yè)英語ppt課件-wenkub
2023-05-13 23:24:08 本頁面
【正文】 assage Two Three plate Injection Molds 2 Three plate injection molds are injection molds possessing two parting lines， having been designed as degating molds. This means that the sprue is separated from the parts in the mold. At the conclusion of injection the mold opens at the first parting line， which contains the sprue and runner and separated the pinpoint gate from the part. 三板式注射模具 是 具有 兩個分型面的 注射模具 ，這種模具帶有 澆口 也就是 直澆道 在模型中和塑件相分離。 As an example: The theoretical max. number of cavities is: F1= volume of machine（ cm3） /Volume of molded parts， sprue and runner（ cm3） F2=Plasticizing capacity（ cm3/min） /Number of shots/min（ part， sprue and runner（ cm3）） F2 must be equal to or smaller than F1. F1 is the maximum number of cavities attainable. Unit One Mold Constructions plasticize［ pl 230。不幸地 Condense [k?n‘dens]壓縮 。mp] 夾緊力，合模力 Capacity [k?‘p230。viti] 型控 母模 Order訂購 。 Therefore [‘240。持續(xù)期間 Therefore the decision concerning the number of cavities to be determined depends on: ① size of the order（ number of molded parts in connection with delivery time） 。rel?tiv ] a. 相對的 ,比較的 The production time required for a given molded part depends on the wall thickness， the injection speed， the recovery rate， the time required to cool the molded material， the cooling capacity of the mold and the necessary incidental time such as duration of pressure holding time， ejection time， delay time， etc. Unit One Mold Constructions 一個給定的模具零件 的 生產(chǎn)周期 取決于 壁厚、注射速度、 收縮率 、模內(nèi)材料的冷卻時間、冷卻的 效能 及必要的輔助時間，如壓力持續(xù)時間、排氣時間及延遲時間等。 basically ‘beisik?li ] ad. 基本上 ,主要地 Consists of [ k?n‘sist ] … 組成 halves [ hɑ:vz ] 同分?jǐn)?shù) is located at被放置在 DIN 16700德國標(biāo)準(zhǔn)化組織 16700 （ 2） Single or Multicavity Molds To set up a calculation conceiving the choice of cavities in an injection mold requires accurate knowledge of the material to be processed， of the injection molding machine and of the molds. The mold costs increase with the rising number of cavities and the relative machine costs decrease. Unit One Mold Constructions （ 2）單型腔注射模具及多型腔注射模具 注射模具 型腔 選擇等 設(shè)計 計算 要求掌握加工 材料 、 注射機(jī) 和模具等方面的 準(zhǔn)確 知識。 firm [ f?:m ] a. 堅定的 ,堅固的 ,結(jié)實的 ； n. 商行 ,公司 standardize [ ‘st230。 on對，依賴 The most important problem in the process of injection molding is undoubtedly the correct design of injection mold， because the molding shop has little influence， if any， on the construction of the machine① . 第一段 塑料成型與模具 Unit One Mold Constructions Efficient production of the most diverse injection molded parts depends primarily on the injection mold. 模具結(jié)構(gòu) The durability of the molds depends on their care and treatment. Since the moving ponents and cavity of the mold are always hardened and ground ， they should produce between 500 000 and 1 000 000 000 shots. 高效率地 生產(chǎn)各類 注射成型 零件 首先 取決于 注射模具。sid? ] 段落 Plastics [ 39。pl230。 diverse [ dai39。nd?daiz ] v. 標(biāo)準(zhǔn)化 ,使合于標(biāo)準(zhǔn) insert [ in39。 模具的制造 成本 隨著型腔數(shù)目的 增加 而增加，而相關(guān)的加工費用減少了。 Recovery rate
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