hmewrk_02_04 - Homework #2: Injection Molding 2.008 Design...

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Homework #2: Injection Molding 2.008 Design and Manufacturing II Spring 2004 Out: February 18 th Due: February 25 th Problem 1: What are the design considerations in replacing a metal container for carbonated beverages with plastic bottles? Think about the functional requirements and explain how the design of a plastic container differs from that of a metal can. Problem 2: Consider the injection molded L-bracket made of Polycarbonate shown in Figure 1. You are asked to find the mold design with the parting line that leads to the minimum possible clamping force to mold the part. 10mm x z y Plane B Gate 6 mm 6mm 1 mm 1 mm 3mm Plane A Figure 1: L-bracket part drawings a) What would be the minimum clamping force required for this part? Indicate the location of gate and the location of parting line/plane for the minimum clamping force design. Assume that the peak injection pressure is 6,000 psi. Also discuss the potential problems in producing the part with this design.
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b) You soon realize that the minimum clamping force is not as important as the
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This note was uploaded on 02/23/2012 for the course MECHANICAL 2.008 taught by Professor Jung-hoonchun during the Spring '04 term at MIT.

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hmewrk_02_04 - Homework #2: Injection Molding 2.008 Design...

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