Understanding injection molds

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Bibliographic Details
Main Authors Pruner, Harry (Author), Nesch, Wolfgang (Author)
Format Electronic eBook
LanguageEnglish
Published Munich : Hanser, [2020]
Edition2nd edition.
Subjects
Molding (Chemical technology)
elektronické knihy
electronic books
Online AccessFull text
ISBN9781569908440
1569908443
9781569908433
Physical Description1 online resource

Cover

Table of Contents:
  • Intro
  • How to Use the Book
  • Table of Contents
  • Preface
  • Basic Mold Design
  • 1.1 Assemblies of an Injection Mold
  • 1.1.1 Phases of Design
  • 1.1.2 Stability of Thermosets Molds
  • 1.1.3 Wear in Thermoset Molds
  • 1.2 Nozzle Side
  • 1.2.1 Sprue Bushing
  • 1.2.2 Decompression
  • 1.2.3 Strainer Nozzles
  • 1.2.4 Nozzle Side of Thermoset Materials
  • 1.2.5 Nozzle Side of Elastomer Molds
  • 1.3 Ejector Side
  • 1.3.1 Ejector Device
  • 1.3.1.1 Ejector Set with Ejector Pins
  • 1.3.1.2 Stripper Plate
  • 1.3.1.3 Mushroom Ejector
  • 1.3.1.4 Air Ejector
  • 1.3.1.5 Ejector System for Thermoset Molds
  • 1.3.1.6 Ejector System for Elastomer Molds
  • 1.3.2 Draft Angles
  • 1.3.3 Ejector Coupling
  • 1.4 Buoyancy Forces in the Mold
  • 1.5 Mold Protection
  • 1.5.1 Light Barrier/Failure Scale
  • 1.5.2 Infrared Mold Protection
  • 1.5.3 Vision Systems
  • 1.6 Mold Cavity Pressure/Mold Filling Control
  • 1.7 Simulation of the Filling Process (Moldflow Analysis)
  • 1.8 Demolding Force
  • 1.9 Ventilation
  • 1.9.1 Ventilation by Displacement
  • 1.9.2 Ventilation by Vacuum
  • 1.10 Support Bars, Support Plates, and Support Rollers
  • 1.11 Mold Clamping Plate and Centering Ring
  • 1.11.1 Mold Clamping Plate
  • 1.11.2 Centering Ring
  • 1.12 Core Pullers
  • 1.13 Mold Structure in Elastomer Processing
  • Types of Demolding in Two-Platen Molds
  • 2.1 Molded Parts without Undercuts
  • 2.2 Molded Parts with Undercuts
  • 2.2.1 Elastic Stripping
  • 2.2.2 Demolding through Sliders
  • 2.2.3 Demolding with Jaws (Split Molds)
  • 2.2.4 Collapsible Cores
  • 2.3 Molded Parts with Internal and External Threads
  • 2.3.1 Internal Thread
  • 2.3.2 External Thread
  • 2.3.3 Unscrewing Device
  • 2.3.3.1 Types of Unscrewing
  • 2.3.3.1.1 Unscrewing when the Mold is Closed
  • 2.3.3.1.2 Unscrewing for an Attached Stripper Plate
  • 2.3.3.1.3 Unscrewing during Upward Motion
  • 2.3.3.1.4 Unscrewing the Stripper Plate with Spring Force
  • 2.4 Molded Parts with Threads, Forcibly Demolded
  • 2.5 Unscrewing Gears
  • Gate Technology
  • 3.1 Distribution Systems
  • 3.1.1 Distribution System with Demolded Molded Part
  • 3.1.1.1 Cold Runner
  • 3.1.1.2 Three-Platen Distributor
  • 3.1.2 Distribution System, Remaining in the Mold
  • 3.1.2.1 Insulating Runner
  • 3.1.2.2 Hot Runner
  • 3.1.2.2.1 Advantages of a Hot Runner
  • 3.1.2.2.2 Hot Runner, Internally Heated
  • 3.1.2.2.3 Hot Runner, Externally Heated
  • 3.1.2.2.4 Multiple Connections
  • 3.1.2.2.5 Needle Shut-Off Nozzles
  • 3.1.2.2.6 Hot Mold Halves
  • 3.2 Gate Technology
  • 3.2.1 Solidifying Gate, Remaining on the Molded Part
  • 3.2.1.1 Direct Gate
  • 3.2.1.2 Pinpoint Gate
  • 3.2.1.3 Fan and Ring Gate
  • 3.2.1.4 Sprue Gate
  • 3.2.1.5 Film Gate
  • 3.2.2 Automatically Separated Gate
  • 3.2.2.1 Tunnel Gate
  • 3.2.2.2 Whip Gate
  • 3.2.2.3 Hot Edge Gate (Lateral Injection)
  • 3.2.2.4 Hot Runner Nozzles
  • 3.3 Distribution System for Thermosets and Elastomers

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