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Mold Selection P5

Previous Page 4.1 Selection of an Appropriate Mold C 147 A Figure 4.63 A 2 × 4 family stack mold for two different rectangular tubs (Courtesy: Husky) B B D A stack mold can make identical products in both levels or have stacks for matching products in each level. This offers the possibility for perfect color match, for assembling the products inside or near the mold, and/or for controlled ejection for subsequent assembly or other post-molding operations, as explained in Section 4.1.2.2. Figure 4.63 shows a 2 × 4 family stack mold for two different rectangular tubs (modular construction). Air ejection and cam-operated actuators with suction cups. | 4.1 Selection of an Appropriate Mole Previous Page Copyrighted Materials Copyright 2006 Hanser Publishers Retrieved from www.knovel.com 147 C B D Figure 4.63 A 2 x 4 family stack mold for two different rectangular tubs Courtesy Husky A stack mold can make identical products in both levels or have stacks for matching products in each level. This offers the possibility for perfect color match for assembling the products inside or near the mold and or for controlled ejection for subsequent assembly or other post-molding operations as explained in Section 4.I.2.2. Figure 4.63 shows a 2 x 4 family stack mold for two different rectangular tubs modular construction . Air ejection and cam-operated actuators with suction cups A remove the products and drop them into chutes B on the side of the center section. This mold is built for a machine specially equipped for stack molds. On the side of the center section C are provisions D to mount the center section to the machine supports. Cycle time 6 s no MO time productivity 4 800 tubs h. Figure 4.64 shows a 2 x 8 stack mold for containers modular construction . Air ejection and cam-operated actuators with suction cups A remove the products and drop them into chutes B on the side of the center section. This mold is built for a machine specially equipped for stack molds. The side of the center section has provisions to mount the center section to the machine supports. Cycle time 6 s no MO time productivity 9 600 pieces h. Notable advantages of stack molds are as follows For the same output there is only about one half of the plant space required compared with two machines making the same product on single-level molds. The same clamp size can be used for twice the number of cavities. In fact it is required to have about 10 more clamping force than for a similar one-level mold as explained 5 . However it is important that the machine has at least twice the shot capacity than that required for a single 148 4 Mold Selection Figure .