The project comprises of the design and development of an automatic wrapping machine. It is constructed in order to wrap all sizes and types of boxes. The image below shows design of an Automatic Wrapping Machine. The model designed is suitable for wrapping universal sizes of boxes. It has a rotating turntable, run by a motor, fixed on a steel base which is movable with the help of wheels.A lead screw along with its structure is mounted on a similar steel base which contains supports for the structure as shown in the figure. Plastic roller is mounted on a stand for straight position while wrapping. Roller assembly reciprocates on the lead screw by means of a motor. It containes two limit switch where one switch changes the direction of rotation of lead screw and the other limit swtich stops the cycle. The control unit is mounted on a base behind the screw to control the operation of wrapping.The design and working of an Automatic Wrapping Machine is made flexible for easy loading and unloading of different sizes of boxes. The machine containes two main sections. One section i.e. wrapping mechanism contains the turntable and its base where boxes are placed to be wrapped. The other section also called as controlling mechanism contains the plastic roller, attached to the lead screw, which is used for wrapping boxes. The plastic roller is fixed on a vertical stand mounted on a plate with the help of screws. Together they constitute the roller assembly.
The lead screw is mounted on a moving base with the help of supports. In the first section a motor is fixed under the turntable base to provide rotation to the turntable. A similar motor with more speed is mounted under the lead screw base to provide reciprocating motion to the roller assembly. A control unit is fixed behind the lead screw structure to control the operation of wrapping. It contains swtiches and regulators to control the speed of the motor and operation of the machine. The upper limit switch is kept fixed at a height equal to the height of the box and the lower switch is fixed with the roller assembly such that it touches the base when moving downwards.