Runner and Gating Design Handbook: Tools for Successful Injection Molding.
Runner and Gating Design Handbook Tools for Successful Injection Molding injection molding
A manufacturing process for forming objects, as of plastic or metal, by heating the molding material to a fluid state and injecting it into a mold. By John P. Beaumont Published by: Hanser Gardner Publications ISBN ISBN
International Standard Book Number
ISBN International Standard Book Number
ISBN n abbr (= International Standard Book Number) → ISBN m : 1-56990-347-6. $129.95 www.hansergardner.com * 800-950-8977
In the opinion of many plastics experts, the design of runners and gates is one of the most important yet often neglected and least understood features in successful injection molding of plastic parts. Traditionally, both part and tooling designers have avoided addressing the issue of sizing and properly balancing the runners, and mold makers have followed their own intuition intuition, in philosophy, way of knowing directly; immediate apprehension. The Greeks understood intuition to be the grasp of universal principles by the intelligence (nous), as distinguished from the fleeting impressions of the senses. and relied on past experience. Today, more than ever before, molders must recognize the fact that the only way to achieve quality goals such as Six Sigma Not to be confused with Sigma 6.
Six Sigma is a set of practices originally developed by Motorola to systematically improve processes by eliminating defects. A defect is defined as nonconformity of a product or service to its specifications. is to develop a clear understanding of the molding principles, and particularly the melt delivery system and its affects on molded parts.
The recently published Runner and Gating Design Handbook: Tools for Successful Injection Molding by John P. Beaumont is an outstanding contribution to the plastics industry and provides a valuable resource for proper design and troubleshooting techniques for both hot and cold runner systems, and methods to successfully solve engineering and processing issues. This first-of-its-kind processing handbook is intended to provide the reader a better understanding of the theological properties of polymer melts and the melt delivery system consisting of nozzle An orifice in an inkjet print head through which ink is sprayed onto the paper. Print heads with six thousand or more nozzles are common in today's printers.
Nozzle , sprue sprue, chronic disorder of the small intestine caused by impaired absorption of fat and other nutrients. Two forms of the disease exist. Tropical sprue occurs in central and northern South America, Asia, Africa, and other specific locations. , runner, and gate. Shear-induced melt variations, key differences between hot and cold runner molds, gating locations, and molding problems related to gates and runners are also explained in a clear and concise manner. The book begins with a brief introduction of the basic runner types and their influence on gate design and gating location. The author has done an excellent job of simplifying the somewhat difficult to understand subject of rheological rhe·ol·o·gy
The study of the deformation and flow of matter.
rheo·log characteristics of plastics in the subsequent chapter. In order to assist the reader in establishing an optimum gating and molding strategy, an in-depth analysis of the development of the different melt conditions within the cavity and their influence on the molded parts is presented. Chapter 4 discusses important considerations for the positioning of gates. The effect of gate placement is explained in detail along with examples and illustrations. Of particular interest is the effect of gate placement on parts made with integral hinges Hinges may refer to:
Chapter 8 covers cold runner molds including runner shapes, sizes, runner ejection ejection /ejec·tion/ (e-jek´shun)
1. the act of casting out or the state of being cast out, as of excretions, secretions, or other bodily fluids.
2. something cast out.
3. , and various gate designs. According to according to
1. As stated or indicated by; on the authority of: according to historians.
2. In keeping with: according to instructions.
3. recent statistics, the use of hot runners in molds has increased to approximately 30% of all new molds. Chapters 9 through 13 provide a close look at the design of hot runner systems and their unique capabilities and challenges. Advantages, disadvantages, and limitations of hot runner molds are discussed along with their mechanics and operation. The process of designing and selecting a runner system is summarized in Chapter 14. The colorfully illustrated last chapter on trouble-shooting with contribution from industry experts such as John Bozzelli and Brad Johnson Brad Johnson can refer to:
Overall, Runner and Gating Design Handbook is an excellent technical reference manual, written in an easy-to-understand and easy-to-read format, with numerous colorful illustrations, photographs and charts. Hanser Gardner Publications has done an outstanding job of producing this book, allowing the author to clearly demonstrate his point with the use of full-color 3-D graphics and photographs throughout the book.
The book is a must for all designers, tool makers, and molders and will prove extremely valuable to anyone wishing to further enhance their plastics engineering knowledge. Author John P. Beaumont is Professor and Department Chair at the Plastics Engineering Technology Program at Penn State Erie and President of Beaumont Technologies, Inc.
Vishu Shah is an author, educator, President of Consultek, and managing partner of CPC (1) (Central Processing Complex) An IBM mainframe that has two or more central processors (CPs) that share memory. It is the collection of processors, memory and I/O subsystems manufactured with a single serial number, typically all contained in one cabinet. Plastics, Technical and Management consulting firms List of Management Consulting Firms
1. McKinsey & Company
2. Marakon Associates
3. Boston Consulting Group (BCG)
4. A.T. Kearney
5. Booz Allen Hamilton (BAH)
6. Monitor Group
7. Bain & Company
8. Roland Berger for the plastics industry. He is a graduate of UMASS Lowell Plastics Engineering program.