Development of small injection moulding machine for forming small plastic articles for small-scale industries

Development of small injection moulding machine for forming small plastic articles in small-scale industries was studied. this work which entailed design,construction and test small injection moulding machine that was capable of forming small plastic articles by injecting molten resins into a closed,cooled mould,where it solidifies to give the desired products was developed. the machine was designed and constructed to work as a prototype for producing very small plastic components. design concept,operation,and assembly of components parts were made. also,working drawings and materials selection were made based on calculations of the diameter of injection plunger,number of teeth required for the plunger rack and spur gear,the angular velocity,number of revolution,torque and power obtained from the electric motor selected and the leverage on the handle of the machine. the machine parts/components were then assembled in line with the designed made,thereafter the constructed machine was tested using high density polyethylene and master batch. the results obtained from the test were satisfactory. © school of engineering,taylor's university college.