Design of Patchouli Shredder Machine Using Gasoline Engine

Abstract

The patchouli plant (Pogostemon cablin Benth.) is a high-value essential oil-producing commodity. The shredding process of patchouli leaves and stems is crucial for drying efficiency and distillation quality. However, shredding is still mostly performed manually, which is less efficient and poses safety risks. This study aims to design a gasoline-engine-based patchouli shredder using the VDI 2222 design method. The machine features two main shafts: a cutter shaft and a pulling shaft, producing shreds 5–7 cm long. The main drive uses a 6.5 HP gasoline engine with a 3-inch and 7-inch pulley transmission system. The design results show machine dimensions of 50 cm × 34 cm × 95 cm, equipped with 3 cutting blades, 4 pullers, and a transmission system that provides effective rotation for shredding. This machine is expected to improve farmers’ work efficiency and support productivity in essential oil production.