modulardesignappliedtobeverage-containerinjectionmolds-外文文献(编辑修改稿)

modulardesignappliedtobeverage-containerinjectionmolds-外文文献(编辑修改稿)内容摘要：

g such a sophisticated system mayfrequently fail because of small mistakes occurring indimensions. This study defines dimensions involvingstructural elements with mutual assembly relationships asunion dimensions. These dimensions are simplified to afoolproofing effect. Procedures for assembling structuralelements are introduced below:(1) Direction of module assembly—Two lines are used toseparate a mold into four assembly modules. The firstline is the parting line defining the female and malemolds. The second line defines the boundary betweenthe front and rear hotrunner plates. The sequence ofassembly follows the order of male mold, femalemold, front hotrunner plate, and rear hotrunnerplate.(2) Direction of assembly units—Each unit belonging tothe abovementioned four assembling modules isassembled in a sequence, namely, confirming theappearance dimensions of injectionmolded parts,further confirming the productrelated dimensions ofthe mold insert and mold cavity, fixing the moldinsert with the clamping module, identifying thedimension of the hotrunner module using thestructural ponents of the female mold, calculatingthe precise dimensions of the clamping plates, andfinally selecting the injection molding machinespecifications. The assembling sequence primarilyfollows product, mold insert, clamping plate, andinjection molding machine. Standardization of structural unitAs for the structural units of beveragecontainer injectionmolds, the concept of product families is further introducedto increase the monality and exchangeability amongvarious functional units. Figure 4 illustrates an example ofmutually substitutable cooling systems. Furthermore, Fig. 5shows the design of various ejection systems used forproduct families. Design of cooling systemThe cooling system prises two units: male moldcooling unit and female mold cooling unit. The male moldcooling unit includes fountain, double spiral, single spiral,(b)Core x 4Ejector plateEjector ring x 4 (a)Linetype LtypeLinetypeLtype air outlet Ltype air inletFig. 5 Design of ejector: a airejector, b ejector plateInt J Adv Manuf Technol (2020) 53:1–10 5and block plate types listed in descending sequence ofcooling efficiency. Based on manufacturing cost and cooling effect, the double spiral type is prioritized. As to thefemale mold cooling unit, it includes multisegment, blockplate, U shape, and linear types listed in descendingsequence of cooling efficiency. Based on manufacturingcost and cooling effect, block plate is prioritized. Design of ejection mechanismThe beverage container is normally thinwalled and theideal ejection mechanism is an air ejector, based on thedesirability of preventing damage to injectionmolded parts.As for injection molding materials with high shrinkage, theejector plate can be selected to smoothly separate theproducts and mold. The air ejector design incorporates twoair outlets around the mold insert, namely, one Ltype outletand one linetype outlet. The air in the Ltype outlet entersthe periphery of the mold insert and separates the injectionmolded parts from the mold insert. The air in the linetypeoutlet is then injected into the bottom of the parts to ejectthem from the mold cavity. Ejector plate is to push amolded part off a core or out of a cavity mold. It is attachedto a core and moves linearly along leaders. Coding of standard structural unitsAfter specifying structural unit dimensions, this investigation introduces a coding system to assist in managing theseponents and units. Structural unit codesThis study uses three digits to code all of the structural units(Fig. 6a). The first digit is the main function code, whichrepresents product geometry and dimensions, and symbolizes standardized structural units. The second digit is thesubfunction code, which represents materials, and iswidely used in bills of materials (BOM) for structural units.The third digit represents the characteristics of eachstructural unit, and includes the codes for products familiesand dimensions. Product identification plex codeThis code is designed for rapidly searching structural unitswhich are mutually exchangeable during product development. This code integrates all structural units correlatedwith the manufacture of a specific container, and alsoreveals information on mold geometry and dimensions, andproduct characteristics, as shown in Fig. 6b.Modular design of injection molds Product and unit coding Manufacturing facility analysisConfirmation of product specificationsIs a proper design?YesNoYesNoStructural unit manufacturing Mold assembly and inspection Component drawingList of modular objectsMold testing amp。 mass productionIs inspection OK?Fig. 7 Standard operation procedure for developing beveragecontainer injection molds(a)(b)Main function Gemoetry amp。 dimensions1 2 3Sub function Materials module codeClamping module Hotrunnermodule Moldingmodule7 8Characteristic code Product family amp。 dimensions Injection molding machine Product classification EjectortypeClamping plate Hottip bushing Female moldMale moldFemale mold baseMale mold base Hot tipmanifold Guiding module Ejectorunit21 3 4 5 6 9 10 11 12 13Fig. 6 Code of modular functionality: a structural unit codes, bproduct identification plex code6 Int J Adv Manuf Technol (2020) 53:1–104 Procedure for developing container productsBased on the abovementioned modular design approach, astandard operation procedure for designing beveragecontainer injection molds can be generated. Thus, merelyfollowing the procedure。