Extruders - A Special Supplement from Rubber & Tyre Machinery World
Rubber extruders have a varied field of application. So, when you come across a rubber profile, strip, hose, cable, wire, cord coating, tire tread, v-belt, tube, or blank remember that they are only a few handful of products manufactured using extrusion process. In this Knowledge On-The-Go Special Supplement, we bring to you a ‘collector’s edition’ on Extruders and Extrusion incorporating the fundamentals.
Rubber extruders have a varied field of application. So, when you come across a rubber profile, strip, hose, cable, wire, cord coating, tire tread, v-belt, tube, or blank remember that they are only a few handful of products manufactured using extrusion process. In this Knowledge On-The-Go Special Supplement, we bring to you a ‘collector’s edition’ on Extruders and Extrusion incorporating the fundamentals.
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| EXTRUDERS |<br />
Image of Extrusion Line. Source: CGEC<br />
changed and consists of carburized and<br />
ground gears. These gears are capable of<br />
delivering much more power in its smaller<br />
size. When old gear designs are<br />
constructed using the new materials and<br />
process, the power calculations yield much<br />
higher gear tooth ratings. But if the rest of<br />
the design is unchanged, and the same<br />
bearings, shafts, and housings are used, the<br />
total gearbox rating cannot simply be based<br />
on the new higher gear rating alone.<br />
The higher torque could never be applied to<br />
the original sized input shaft without<br />
causing bending or twisting. The bearings<br />
and/or shafts would be overloaded with the<br />
higher forces, and the housing would<br />
probably not have sufficient strength to<br />
resist significant distortion. Reputed<br />
gearbox rebuilders will guide you well.<br />
Automation<br />
The different levels of automation of downstream<br />
line for extruders makes the<br />
extrusion operations highly user-friendly<br />
and efficient.<br />
In the case of extruder heads, there are<br />
different options depending on user<br />
requirement - a simple, single-compound<br />
single-component mechanically opening<br />
extruder head to a sophisticated costeffective<br />
PLC controlled hydraulically<br />
opening multi-compound multi-cavity head.<br />
So, rubber extrusion is in itself a vast and<br />
interesting subject.<br />
RMW<br />
35<br />
<strong>Rubber</strong> & <strong>Tyre</strong> <strong>Machinery</strong> <strong>World</strong> | FEB 2016
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