Research and Development of a Spring Drive with Recovery Energy in the Presence of a Variable Inertial Load

A spring drive with energy recovery, working with an external variable inertial load that occurs in devices for unwinding and pulling packaging material in packaging equipment, is considered. In order to reduce energy costs, the device does not have a brake installed on the supporting device for a roll with packaging material, due to this, areas with freely sagging packaging material appear. Operating modes are considered when the packaging material is not stretched and in this case the energy consumption is minimal. In the case of tension of the packaging material, an external inertial load appears due to the acceleration of the roll with the packaging material to the required maximum speed of the spring drive carriage. The dependence for determining the turn-off coordinate of the pneumatic drive depending on the current value of the mass of the roll is determined.