Rancang bangun mesin pengupas kulit buah kopi basah berkapasitas 20 kg/jam di kabupaten mamasa

Abstract

The coffee cherry peeling process is still done manually. Using a coffee cherry peeling machine is faster than manual methods. This coffee cherry peeling machine can facilitate this process. In this design, the first steps were field observations and literature review. The results of these observations and literature review served as the basis for the construction of the components and mechanisms of the machine itself. A design comparison revealed that a peeling system with a grinding shaft was most suitable for breaking the coffee cherries, while a grinding base was used to separate the skin and beans. The stages in manufacturing a coffee cherry peeling machine include needs analysis, preparation of technical product specifications, and product concept design, which aims to generate alternative product concepts. Once the product concept is established, the next step is product design, which involves developing the product concept from a sketch into an engineering object. The final step in manufacturing this machine is creating product documentation in the form of working drawings. The coffee hulling machine has a capacity of 20 kg/hour, measures 60 cm long x 50 cm high, and uses a 1.5 HP electric motor with a speed of 1487.4 rpm. The frame uses a 40 x 40 x 2 mm angle profile. The coffee hulling machine's transmission system uses two pulleys, each with a diameter of 13 inches and a 3 inch, which convert the rotational speed from 1487.4 rpm to 169 rpm. A No. 67 type V-belt, and a 1 inch diameter solid shaft.