Injection molds for beginners

• Main Author: Dangel, Rainer (Author)
• Format: Electronic eBook
• Language: English
• Published: München : Carl Hanser Verlag GmbH & Co. KG, [2020]
• Edition: 2nd edition.
• Subjects: Molding (Chemical technology); elektronické knihy; electronic books
• ISBN: 9781569908198; 1569908192; 1569908184; 9781569908181
• Physical Description: 1 online resource

Table of Contents:

• Intro
• Preface to the Second Edition
• Foreword to the First Edition
• The Author
• Acknowledgments
• Contents
• How to Use This Book
• 1 Introduction
• 2 Mold Types
• 2.1 Simple Open/Close Mold
• 2.1.1 Classic Structure of an Open/Close Mold
• 2.1.2 Guiding Elements
• 2.1.3 Backing Plate
• 2.2 Molds with Moving Elements
• 2.2.1 Undercut
• 2.2.2 Slide
• 2.2.3 Slide Operation
• 2.2.4 Latch, Clip Lock
• 2.2.5 Inclined Ejector
• 2.2.6 Forced Demolding
• 2.2.7 Mold Size
• 2.3 Mold for Threads
• 2.3.1 External Threads
• 2.3.2 Internal Threads
• 2.3.3 Drive Types for De-spindling
• 2.3.3.1 Hydraulic Unscrewing Unit
• 2.3.3.2 Gear Rack
• 2.3.3.3 High-Helix Lead Screw
• 2.3.3.4 Multi-cavity Molds
• 2.4 Multi-component Injection Molds
• 2.4.1 Material Pairings
• 2.4.2 Mold Technology
• 2.4.2.1 Shifting Technology
• 2.4.2.2 Rotary Table Technology
• 2.4.2.3 Sealing Slide Technology
• 2.4.2.4 Further Technologies
• 2.5 Stack Mold
• 2.5.1 Material Combinations
• 2.5.2 Hot Runner
• 2.5.3 Opening and Closing
• 2.5.4 Toggle Lever
• 2.5.5 Ejection
• 2.5.6 General Information on the Stack Mold
• 2.6 Further Literature
• 3 Preparation
• 3.1 CAD System
• 3.2 Data Transfer, Procedure, and Processing
• 3.2.1 Data Transfer
• 3.2.2 Formats
• 3.2.2.1 IGES
• 3.2.2.2 STEP
• 3.2.2.3 STL
• 3.2.3 Data Size
• 3.2.4 Shrinkage
• 3.2.4.1 Material Selection
• 3.2.4.2 Shrinkage (Physical Process)
• 3.2.4.3 Influencing Variables
• 3.2.5 Calculation and Impact
• 3.2.5.1 Free Shrinkage, Constrained Shrinkage
• 3.2.5.2 Warping
• 3.3 Specifications
• 3.3.1 Location of the Component inside the Injection Mold
• 3.3.1.1 Demolding Direction
• 3.3.2 Number of Cavities
• 3.3.3 Arrangement of Cavities
• 3.4 Material Selection for Injection Molds
• 3.5 Mold Size
• 3.6 Plate Thickness
• 3.7 Demolding
• 3.7.1 Basic Principle of Demolding
• 3.7.2 Draft Angles
• 3.7.2.1 Definition
• 3.7.2.2 Effect on the Opening of the Mold
• 3.7.2.3 Draft Angle in the Split Line Face
• 3.7.2.4 Demolding Problems and Solutions
• 3.8 Split Line Face
• 3.8.1 Plain Split Line Face
• 3.8.2 Contour-Forming Split Line Face
• 3.8.3 Jumping Split Line Face
• 3.8.4 Wear Plates in the Split
• 3.8.5 Visible Split Line
• 3.9 Injection
• 3.9.1 Injection and Feed Point
• 3.9.2 Simulation
• 3.9.3 Sprue System, Sprue Type
• 3.9.3.1 Cold Runner
• 3.9.3.2 Hot Runner
• 3.9.4 Runner
• 3.9.5 Sprue on the Part
• 3.9.6 Tunnel Gate
• 3.9.7 Film Gate
• 3.9.8 Diaphragm Gate
• 3.9.9 Hot Runner Single Nozzle
• 3.9.10 Hot Runner Distributor
• 3.9.11 Hot Runner Distribution System with Needle Valve
• 3.9.11.1 Integral Hinge
• 3.9.12 Three-Plate Mold
• 3.9.13 Tunnel Gate Inserts
• 3.10 Ventilation
• 3.10.1 General Information about Ventilation
• 3.10.2 Ventilation via Components
• 3.10.3 Geometric Design of Ventilation
• 3.11 Further Literature
• 4 Components