Abstract：This Paper focused on Design and Analysis of an automatic plastic injection mould for production of CAM BUSH. Cam Bush is used as a indexing device in ON/OFF Load Tap changer device of high voltage transformer and serves as the connector between the indexing head and the power changing gears. An injection mould is a tool which is used for production of plastic components in large numbers in a short span of time. Modeling in done by using Unigraphics (NX 7.5) and Auto Desk Mould flow Plastic Insight is use for Mould flow Analysis for CAM BUSH filling rate, cooling system location and Location of submarine gate. The moulding tool consists of the Top plate, Cavity plate, Core plate, Spacer blocks, Ejector plate and the Bottom plate. In this six core pins and six ejector pins are provided on injection mould because the required cam bush has six indexing holes. The material use is Oil Hardened Non-shrinking Steel (OHNS) for the core and cavity, and EN353 for the Tie Rod, guide bushes, core pins, ejector pins, locator ring and the sprue bush and Mild Steel for other plates are selected. The elements of injection moulding tool has designed and analyzed. Submarine gate and Baffle circular hole cooling system has provided in the moulding tool to increase the productivity and good surface finish. The required Nylon-66 Cam bush component will produced with this moulding tool with the various parameters of injection moulding machine.

Key words: Plastic Injection Mould, CAM BUSH, Mould Floe Analysis

1. Introduction

Now a day’s plastic are occupying a vital role in the day-to-day life. It is not at all can exaggeration, if we say that there is no field into which plastic have not stepped in right from the manufacturing at a pin to that of a spacecraft. At the middle of 19th century, plastics start a leading role in the material and in our life.Corrosion resistance are some of the aspects through which plastics are even becoming superiors to metals and attained an elevated rate of preference in every branch of manufacturing. Right from the emergency of plastics they are undergoing drastic in various aspects like design of plastic product, manufacturing processing then in testing fields and now, because of fruitful efforts of many people at last the came in work through manual labor, but with help of artificial intelligence that is, with software package like CAD/CAM. Because of high strength of weight ratio, improve chemical and temperature resistance, inherent properties of being bath thermal and corrosion resistance, transparency have made them a material choice. Plastic consume less energy during formation and can be profitably recycled. Today plastics are replacing the metals like Brass, Copper, Cast Iron, Steel etc. Plastics can be classified according to manufacturing methods in to main groups Those which soften when heated and solidifies on cooling. These are known as “Thermo plastic” and Those which harden when heated as a result of chemical change. These are known as Thermosetting or Duro plastic material” Selection of particular material for the product is another important factor. This is particularly very necessary for the product

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2214-7853 © 2015 Published by Elsevier Ltd.

Selection and peer-review under responsibility of the conference committee members of the 4th International conference on Materials Processing and Characterization.

doi:10.1016/j.matpr.2015.07.203

determination. It should capable of withstanding stresses acted upon it as well. Each material has its own properties and attributes. Some materials are better in high environment and extremely abrasion resistance. The difficult part is to find a material that will come close to fulfilling the entire requirement of the purpose. So material should be so versatile that it suits all the consideration and requirement of our product. After considering all these point’s material must be selected suitable enough to satisfy all these conditions.