INTRODUCTION

1.1 Background of the Project

Typically, a winding machine winds a material such as metal wire, thread, or paper, onto a core, spool, or bobbin. There are several different types of winding machines, from simple manual feed machines to complex computer-numeric-control (CNC) machines. Some of the more common uses for winding machines are coil winding, rope winding, and continuous filament winding. Many industries use these devices, including textile, electronics, and wire industries (Pansini, 2009).

A manual winding machine usually has a core on a spindle and the user feeds wire, rope, or other material onto the core. The user controls the spindle speed and feeds the material through user hand, guiding it to control the tension and load pattern. These simple machines may be of a bench-top size or large stand-alone winder.  Winding machines may be used for transformer or motor (Henry, 2011).

Transformer rewinding machine is a machine for rewinding coil in a transformer. This transformer rewinding machine is one of types of winding machine that is available in industries today. The transformer rewinding machine can be classified according to speed levels and capacity. From multi speeded machines to medium, large and extra-large machines, these machines come in various types and categories, performing a range function and can be manual, automatic, analogue or digital (Peri, 2010).

Transformer rewinding machine with digital display design is dictated by a coil’s complexity, material tension limitations, machine versatilities, and automation/operator intervention, production volume and budgetary considerations (Bill, 2013).

1.2 Problem Statement

The problem to be solved in this project will include;

1. The design an automatic transformer rewinding machine

2. Integrating a digital counter into the transformer rewinding machine

3. Sourcing of local components for construction of automatic transformer rewinding machine

4. Production of a user friendly and easy to operate automatic transformer rewinding machine

1.3 Objectives of the project

The aim of this project is to design and construct a transformer rewinding machine with digital counter.

Basically, this project has four main objectives;

1. To design an automatic transformer rewinding machine

2. To integrate a digital counter into the transformer rewinding machine

3. To source local components for construction of automatic transformer rewinding machine

4. To produced a user friendly and easy to operate automatic transformer rewinding machine

1.4 Scope and Limitation 

The design of the machine will be limited to a table size winding machine. This study limited its scope for winding coils of small transformers of about 12KV with an input voltage of 220v-5v dc and an output voltage of 5v,the number of turns the machine can wind is in the range of 0-999 turns . The size of the copper wire for winding other machines like large turbine, heavy transformers e.t.c that has 14 to 34 SWG or specifically 0.078-0.3125 diameter copper wire is beyond the machine capability. Specifically indoor appliances commonly found in household like electric fan, grinder.

1.5 Importance of the Project

The significance of this project cannot be overemphasized this is because it would serve as a low cost machine when produced in bulk. And this will aid the small business man who cannot afford to buy the bigger machine by affording this one. Also it can be used for training students in winding of small transformers & relay coils.

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