Design and analysis of shredder machine for e - waste recycling using CATIA

Abstract

In the current scenario wherein technical gadgets are ruling everywhere from personal mobile phones to official devices technological usage of the electronic and electrical gadgets is increasing day by day and the very big challenge behind it is the disposal and recycling to reduce the effect of toxic materials used in these equipment’s. Most of the countries have been disposing in huge contents of e-waste into dumping yards on abandoned islands disturbing the eco-system. This has been taken as a serious environmental issue all across the world. Even though, lots of disposal methods are in existence for safe disposal, there had been a list of limitations too. The usage of poisonous metals in micron sizes, chemicals in batteries etc. This project, is an attempt to model a crushing machine to dismantle and crush the small electronic gadgets like laptop, mobile phones and i-pads after its life time. The design of the new shredder machine with effective blade profile is to be modeled to crush the used equipment for a size that can be recycled. This project is thus to design a suitable shredder and an analysis using CATIA is expected to provide an optimum solution for the e-waste recycling problem, a need of the hour.

Shredder machine for plastic recycling: A review paper

“…The reported work did not emphasize the cutting angle. Nevertheless, the cutting angle ranging from 50° to 80° were widely used for the shredder blades [16,[25][26][27]. There are no extensive studies carried out to determine the effects of the cutting angle to the performance of plastic shredding.…”

“…Dave Dakken, the pioneer of precious plastic committee claimed that thicker blades are stronger and produce bigger flake output [10]. Finite Element Analysis with ANSYS was implemented for calculating the induced stresses and strains throughout the structure of the blades [22,[25][26][27]. The detailed design feature of blades and the structural analysis including deformation, shear stress (equivalent to Von Mises stress) and shear strain for various thicknesses and design of blades in several researchers are tabulated in the following table 3.…”

“…Cutting is performed at the interface of the two opposing sets of blades [29]. The blades can be arranged to specific orientation [18,22,26,30].…”

“…(d) Two-edge V-shape orientation. Redrawn images of [22], [30], [26], [18]. In the forum discussed in the Precious Plastic Committee, problems were encountered in a singleshaft shredder machine [10,31].…”

“…Rotating shaft with (a) Two-edges spiral, (b) Four-edges zig-zag, (c) Three-edges series, and (d) Two-edge V-shape orientation. Redrawn images of[22],[30],[26],[18].…”