You Are Bringing In A Hot Runner Injection Mold So You Do Not Need Any Runner Information To Manufacture Plastic Parts 1 (54.82 KiB) Viewed 52 times
You Are Bringing In A Hot Runner Injection Mold So You Do Not Need Any Runner Information To Manufacture Plastic Parts 2 (44.68 KiB) Viewed 52 times
You are bringing in a hot runner injection mold (so you do not need any runner information) to manufacture plastic parts out of polystyrene (PS). The part geometry in the direction of draw is shown below, where the part is 1.5" x 4" x 0.25". There are two circular cutouts (diameter = 0.5") and one triangular cutout (base = 0.99"; height = 0.86"). You must first determine the required clamp tonnage and the required machine shot size to run this part in a 2-cavity mold. Which of the machines listed below are capable of producing this part with this cold runner mold, knowing that since PS is amorphous we do not want to exceed 65% of the machine shot size and we need 5 T/in2 of clamp force? Assume that on all machines listed below the mold will fit between the tie bars and that the mold height is appropriate for all machines listed. The equations for the areas of a rectangle, circlevand triangle are given to the right of the part schematics below.
Draw Direction Arectangle = bh bh Atriangle 2 πd2 Acircle Alone in nonces 4 o SMS Clamp Tonnage Maximum Shot Size Machine 1 40 tons Machine 2 50 tons 4.7 in 5.1 in 3 4.5 in 3.7 in 3 Machine 3 60 tons Machine 4 70 tons Machine 4 Machine 2 Machine 1 D Machine 3
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