- The parameters W and L obtained in approximately actual size:
0.030 "≤l≤ 0125" choose l = 0.1 (inch)
1/8 ≤ ½ W≤ choose W = 0:25 (inch)
- The circumference of 1 drains Engineering: a = 2 (W + D) = 2 (0.25 + 0,001) = 0.5002 inches
- Circumference of products: eg plastic bottle cap with D = 3 cm = 1.18 inches,
height of lid: h = 1.5cm inch = 0:59
- So the approximate circumference of the product: A = ((2x3.14x0.59) +0.59)) x2 = 8.5904 inch
- Number of grooves exhaust X: Xa = 0.3A What have X = 0.3 A / a =
0.3x8.5904 / 0.5002 = 5:15 → Choose X = 6
- slotted exhaust layout: 6 groove exhaust will be arranged on the
parting grooves spaced every 60 °.
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