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PROJECT TOPIC: DESIGN AND FABRICATION OF A PRINTING MACHINE

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ABSTRACT Parameters on which clear prints depends were comprehensively investigated.  The study revealed that clear print depends on the impressed pressure the working temperature and the gold foil print paper life expectancy.Also studies were he manner of dependence of these parameters on prints impressed  on sheets of varied thickness.  The results of these investigation were  utizlied in the design and fabrication of an operational manual printing machine using gold foil   sheet depositor clear prints were impressed on papers during the new machine’s operation. LIST OF TABLESTABLE     1  - Experimental determination of pressure for printing                   11- Effect of temperature on sharpness of print.                          111 – Description of (components) parts and materials use for them                          1v- comparison of cost and properties of materials  LIST OF FIGURESDescriptionFigure 1 sketch of alternative AFigure 2. Sketch of alternative B.Figure 3 sketch of alternative CFigure 4 isomeric view of hot plate square housing Figure 5 isometric view of type holderFigure 6 &7 load and free body diagram of crank are (Handle) and rod. LIST OF SYMBOLSA – AreaA – AccelerationD – Maximum shaft diameterd-    minimum  shaft diameter e-     efficiency k – Thermal conductivityc – Heat capacityx – The pressure transmissibility of lever system (press x  1/duration )t – Timel – Length of shaftm – Massm – Maximum bearding momentp - Electric powerq – Quantity of heat   TABLE OF CONTENTS Title page                                iiLetter of transmittal                            iiiRelease                                    ivApproval page                                vDedication                                viAcknowledgement                             viiAbstract                                viiiList of figures                                ix List of tables                             xList of symbols                                xiTable of contents                            xiiCHAPTER ONE 1.1    introduction                             11.2    literature review and data collection                 21.3    experimental determination of pressure for prating        31.4     design specification                         9CHAPTER TWO2.1    Design solutions                        112.2    Alternative A press foot printer                112.3    Alternative  B; crank arm  (handle )                142.4    Alternative  C; automatic (motorized) printer             172.5    Comparison of alternative and choice                20CHAPTER THREE    3.1    Design selection and analysis of parts of chosen alternative    223.2    Theory of  design/  design calculation                 243.3    The  design of the shaft (Hollow)                26CHAPTER FOUR        4.1    construction of prototype                    284.2    general                             284.3    material selection                         294.4    sequence of construction and assembly                40CHAPTER FIVE5.1    Testing of prototype (test – run)                405.2    Evaluation of machine efficiency                405.3    Operator’s manual                        415.4    Costing  (cost analysis)                    425.5    Problems Encounter                        455.6    Conclusion                            455.7    Recommendation                            46Reference                                48


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