【正文】 穴與拉料桿 .........................................................................14 成型零部件的設(shè)計(jì)與計(jì)算 ....................................................................15 成型零部件結(jié)構(gòu)設(shè)計(jì) .................................................................16 成型零部件尺寸計(jì)算 .................................................................18 成型零部件強(qiáng)度計(jì)算 .................................................................21 抽芯機(jī)構(gòu)的設(shè)計(jì) .........................................................................22 脫模機(jī)構(gòu)的設(shè)計(jì) .....................................................................................23 脫模機(jī)構(gòu)的設(shè)計(jì)原則及脫模力計(jì)算 .........................................23 脫模機(jī)構(gòu)的確定 .........................................................................24 IV 脫模機(jī)構(gòu)的導(dǎo)向裝置和復(fù)位 .....................................................25 第 4 章 校核 ........................................................................................................27 注射機(jī)的相關(guān)參數(shù)校核 ........................................................................27 最大注射量的校核 .....................................................................27 鎖模力的校核 .............................................................................27 注射壓力的校核 .........................................................................28 模具高度與注射機(jī)閉合高度關(guān)系的校核 ................................28 開模行程的校核 .........................................................................29 推桿強(qiáng)度校核 .........................................................................................29 結(jié)論 ...........................................................................................................................31 致謝 ...........................................................................................................................32 參考文獻(xiàn) ..................................................................................................................33 V CONTENTS Abstract...................................................................................................................... I Abstract..................................................................................................................... II Chapter1 Introduction ........................................................................................1 A profile of China mold and die industry ................................................1 The development propest of China mold industry ..................................2 The role of design in mould manufacturing study...................................3 The main task of the design ......................................................................3 Chapter2 Scheme selection.................................................................................4 Plastic parts molding process analysis .....................................................4 Plastic parts analysis......................................................................4 Plastic raw material analysis .........................................................5 The size and the weight of plastic parts........................................6 The parting surface ...................................................................................6 The determination of cavity quantity and arrangment ............................7 The number of cavity.....................................................................7 The layout of the cavity.................................................................8 Preliminary selection of injection machine ..................................9 Chapter3 The calculation in the design of parts ........................................... 11 The design of gating system ................................................................... 11 The mon runner gating system position and design principe ..................................................................................................... 11 The design of the mainstream way .............................................12 The design of the shunt way........................................................13 The gate design ............................................................................13 Slag hole and pull rod..................................................................14 Forming parts design and calculation ....................................................15 The design of molding parts and molding parts structure design16 Molding parts size calculation ....................................................18 Molding parts strength calculation .............................................21 The design of the corepulling mechanism ................................22 The design of the demoulding mechanism ............................................23 Demoulding mechanism of the design principles and ejection force calculation ................................................23 The determination of demoulding mechanism ...........................24 Demoulding mechanism of the orientde device and reset .........25 Chapter4 Check ...................................................................................................26 VI The related parameters in injection machine checking .........................27 The largest injection quantity check ...........................................27 The clamping force of the check.................................................27 Injection pressure check ..............................................................28 Height of mould and injection machine of the relaionship between height and checking .........................................28 Drive travel check..........................................................