EE 5001 Project Report

Gasoline Container Blow Moulder

Group: - Kaustubh.A.Deshpande, Prathmesh.R.Kumbhare

Introduction

This project involves the production of 5 liter jerry cans which are generally used for

storing gasoline by using the blow moulding technique. We referred to the video link

below:-

https://www.youtube.com/watch?v=7Ktr24o5Vzg

The video shows the working of the JHB EBMC machines which are used for stable moulding

of high quality products. The machine uses only electric and pneumatic parts and thanks to

installing a servomotor for motion, we ensure high positioning accuracy and stabilization of

motion speed. High quality is maintained by the machine by using unique mechanisms such

as parting line misalignment prevention mechanism which reduces the defective product

rate, automatic adjustment of the mouth cutting positions when moulding multiple parisons,

and calibrating force equalizing mechanism which eliminates the time for adjustment

calibrator’s height and reduces the time spent for changing moulds. This machine is efficient

and can produce 356 bottles per hour.

The image shows the various mechanism present in the machine. The blow moulding

mechanism and the clamping mechanism are servo controlled. The clamping mechanism has

3 axes of operation while the blow moulding has one. The conveyor belt is non-servo

controlled and is just started and stopped.

Process

The preforms which are previously injected are again passed through an oven to be reheated.

The preforms are then picked up by the blow moulding mechanism. Once inside the mould,

a pusher and high air pressure blows the container and the mould then opens to eject the

container. The newly formed container is then held in position so that unnecessary parts

formed during the moulding process can be removed. The finished product is then picked up

by a clamping mechanism and put on the conveyor belt for further transport.

The general overview of the blow moulding process is as shown in the figure below.

The basic steps required to achieve the successful completion of one container is described

briefly in the function chart below.