nxcae13: plásticos técnicos mexicanos - igps pallet

A Modern CAE Environment: Enabling Smarter Decisions

iGPS Pallet

José Antonio Hernández, CAE Engineer, Plásticos Técnicos Mexicanos

NX CAE

Symposium

2013

LOGO HERE

20XX-XX-XX

Restricted © Siemens AG 2013 All rights reserved.

Siemens PLM Software

Plásticos Técnicos Mexicanos

• PTM (Plásticos Técnicos Mexicanos) was founded in 1976. Today, with over 35

years of experience, provides solution and manufacturing for plastic processing

projects. PTM provides specially services, tailored to meet client-specific needs,

and PTM also serves a range of industries, such as automotive, material handling,

as well as food and beverage.

• PTM has two production plants in Mexico as well as operations in Colombia and

Brazil with more than 1,000 employees, the annual processing capacity exceeds

20,000 tons of plastic resins. PTM has modern production capabilities and the

ability to perform various plastic transformation processes, such as blown,

injection, thermoforming and extrusion.

• PTM recovers and recycles more than 8,000 tons of plastic annually for use in the

manufacture of useful products. PTM is one of the largest plastics recyclers in

México.

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Between 80% and 90% of pallets fall in two problems:

block pallet breaks

75% – 80%

pallet disassembly

5% – 10%

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Reasons of block pallet breaks:

Injection pallet

walls: 3 – 4 mm

Structural foam pallet

walls: 6 – 12 mm

Inside Injection Foaming pallet

walls: 4 + 12 + 4 = 20 mm

THE SOLUTION

iif process

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Reasons of block pallet disassembly:

Snap-Fit

design

1st step snap-fit design

2nd walls smelting with iif

THE SOLUTION

iif process

http://www2.basf.us/businesses/plasticportal/pp_techRes_tools_snapfit_en.html

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Materials

Mechanical Properties

Polyethylene

Young´s Modulus = 822Mpa

Poisson´s Ratio = 0.388

Stress = 16.6 Mpa

Structural foam

Young´s Modulus = 1573Mpa

Poisson´s Ratio = 0.3

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Design

This model was designed using NX CAD

Structural Foam

Cover

Base

Whole assembly

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Dimensions

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The Finite element model (preprocessing) was made using NX CAE.

• 3D tetrahedral elemenet used (CTETRA10) more than 2 million of elements.

The Solution was made using NX Nastran.

• Solution NLSTATIC106 Considering geometry and material nonlinear characteristics.

Finite Element Model

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The pallet works as a unique structure, Displacement

Results

With a vertical load (1,270 Kg) on the surface

Maximum Displacement=19.98mm

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Physical Test, Results

POSITION L1 C L2

Without load 00

mm

00 mm 00

mm

Initial measure 15

mm

17 mm 16

mm

After 24hr 17

mm

19 mm 20

mm

After 48hr 18

mm

20 mm 21

mm

AVG. SHORT

SIDE

19.7

mm

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The pallet works as a unique structure, Stresses

Results

Stresses=@24Mpa

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Facility List Upgrades

implemented by PTM for the iGPS program

• Base Mold – Austria

• Cover Mold – Austria

• RFID and inserts robot – Italy

• 80 ton silo – Mexico

• Water cooling equipment – Italy

• Foaming control device – USA

• Platform movement equipment –

Mexico

• Material gravimetric loaders – USA

• Equipment investment $2,566,000

• Building modifications $726,000

• TOTAL INVESTMENT FOR iGPS

• $3,292,000

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New recycling plant

implemented by PTM for the G1 iGPS pallet

• Platform separator - Mexico

• Schrader – Austria

• Metal separator – Germany

• Grinder – Germany

• Washing machine – Germany

• Drying device – Germany

• Engineering and installation

• Other equipment

• Equipment investment

$1,349,000

• Building $50,000.

• TOTAL INVESTMENT FOR iGPS

• G1 platform recycling.

• $1,399,000

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Summary

• Using the engineering and design tools was very useful to increase the proposals in

less time and faster.

• With NX CAD was very fast to move the design and have several concepts (more

than expected) using synchronous thechnology.

• Several environments with differents loads was fast and the solution process and

results with NX CAE and NX NASTRAN.

• Finally the engineering and design process was done on time because of NX CAD,

NX CAE and NX NATRAN.

nxcae13: plásticos técnicos mexicanos - igps pallet

Technology

xxsiemens plm software

mmrestricted siemens

iif restricted siemens

mparestricted siemens

injection pallet walls

nx nastran

solution process

nx natran