Plastics Molds: Design, Construction, Use

Thayer, G.B., 1946. Plastics Molds: Design, Construction, Use, 2nd ed. Huebner Publications, Cleveland. This book covers the following: Introduction - Preface to the third edition - Acknowledgements to the third edition - I Introduction: definition, requirements, types, factors - II Suggestions on design procedure - III Practical points in mold design and construction - General mold design - Compression mold design - Injection mold design - For the tool maker - For the molding operator - For the estimator - For the finisher - For the inspector - IV Materials for plastic molds - General purpose low carbon steels - Hobbing steels - Water hardening steels - Carburizing steels - High alloy tool steels - Stainless steels - Oil hardening tool steels - Air hardening tool steels - Stainless steels - Hot rolled and cold Finished steels - Heat treating equipment - nonferrous metals for molds, by Wm. J. Dewer - Beryllium alloys and their applications, by N. W. Bass - A classification of plastics according to their molding characteristics - Rockwell hardness tests on plastics, by J. Robert Tucker - V Types of molds for compression molding - Positive type mold - Semi-positive type mold - Flash type mold - VI The design of a simple compression type mold - VII The Design of a split cavity compression type mold - Design of a cooling fixture for the same mold - VIII The design of a side-opening compression mold, by F.G. Woodiwiss - A loading fixture for a compression mold - IX Design of a transfer type mold - Jet molding - X The design of a simple injection type mold - An alternate design for a typical ejector pin mold, by Thomas J. Lester - XI The design of a stripper-plate injection mold - An alternate design for a stripper type mold - by Thomas J. Lester - XII The design of a loose-bar injection mold - XIII An injection mold for a plastics lens, by Carl H. Whitlock - XIV Loading the injection mold, by Don F. Hoffman - XV Ejector systems for injection molds - Direct systems, by Don F. Hoffman - Indirect systems, by Don F. Hoffman - The use of an Air Cylinder for deep cavity ejection, by Gordon B. Thayer - Finger core pulls in mold design, by Thomas J. Lester - XVI Mold building methods and equipment - XVII Methods of mold sinking - Hobbing - Heat treatment for hobbing - Milling - The rotary head method for milling mold cavities, by D. V. Stevens - Duplicating - Gorton Duplicators - The monarch shapemaster; lead screw variating mechanism - The Turchan duplicating attachment - XVIII Finishing methods and equipment - Edging - Filing - Tumble finishing - Sanding and grinding - Flash trimming dies - Drilling - Tools for drilling and tapping - Tapping - Increasing efficiency in tapping molded parts, by Ray Olson - Turning and boring - Broaching - Buffing - Assembling - Painting - XIX Molding screw threads in plastics - XX Hard chromium plating for the plastics industry, by W.A. Crowder and L.E. Welch - Electroplating (Ekko process) - What hardness for plastics molds?, by L.J. Morrison - XXI Plastic tooling, by Harry W. Tompkins - A plastic tooling shop and its equipment - The liquid casting resins - plaster pattern making - Casting procedure - Drop hammer punches - Compreg drill fixtures - conclusion - Mechanical equipment for plaster model making - XXII Estimating plastics molds - Index to tables of time values and estimating - A time estimate for a compression mold - Estimating systems for plastics molds - Estimate of a six cavity stripper plate injection mold, by John Wintemute - How to use shrinkage charts - Shrinkage charts - Nomenclature of plastics molding - Index

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