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EFFECTS OF EXTRUSION BLOW MOLDING INTERNAL COOLING ...

EFFECTS OF EXTRUSION BLOW MOLDING INTERNAL COOLING ...

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1.3.4 Installation<br />

Installation of the equipment required significant modifications to the machine<br />

including fabrication of mounting brackets for both the cooling unit and the<br />

valves. It was necessary to mount the cooling unit at a level higher than the blow<br />

pins and with as short a distance between the blow pin, cooling unit, and valves<br />

as possible. The size of the cooling unit required it to be mounted on top of the<br />

machine surround with a substantial bracket able to support its 90 pound weight.<br />

The final design for the mounting tray consisted of a three-point support with the<br />

main weight of the unit being carried by the machine surround and a third mount<br />

point inside the cabinet on a mounting plate. The mounting tray also needed a<br />

lip to contain the unit to prevent it from vibrating off. The valve units were<br />

mounted to the sheet metal sides of the machine surround using sandwich plates<br />

to stabilize them, this spread out the load further. Photos of the blow mold<br />

machine before and after modification are shown in Figures 7 and 8.<br />

12

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