JAYALAKSHMI INSTITUTE OF TECHNOLOGY

THOPPUR, DHARMAPURI

AUTOMATIC COCONUT DEHUSKING MACHINE

USING MECHATRONICS PRINCIPLES

Presented by

K.NANDHAKUMAR

J.JOVIN JAMES

nandhakarthik92@gmail.com

ABSTRACT

The outer shell (husk) of the coconut is removed for various purposes like extraction of

oil, coir products, preparation of food items, etc. Until now the shell of the coconut is

removed manually. The manual dehusking involves risk due to injury and consumes

more time to dehusk (peel) the coconut shell and labor fatigue. This leads to less

productivity and more labor cost. To overcome this, there is a need to automate the

dehusking process.

The invention of the project is that, the removal of the husk of coconuts by low cost

automation. This project technique consists of pair of curved shells, multi hooks and two

double acting pneumatic cylinders to remove the husk of the coconut, and one single

acting pneumatic cylinder to hold and press the coconut. Here 5/2 spring return single

solenoid direction control valve is used to actuate the two pistons which are used to

remove the husk and 2/2 single solenoid direction valve is used to actuate the holding

cylinder which press and hold the coconut in the shell.

The range of operating pressure is 12 to 16 bars. The project is an attempt to replace man

power required to dehusk (peel) the outer shell of the coconut.

All the analysis and conclusions in this paper are strictly based on the project

“AUTOMATIC COCONUT DEHUSKING MACHINE”, done at our college.