Previous Page Selection of an Appropriate Mold When considering the use of stack molds, especially for fast cycling products, special measures must be planned to remove the huge amounts of products. Depending on the shape of the product, these measures could be any of a number of controlled ejection methods, conveyors, stackers, packing machines etc. Figure shows a typical cup stacker. The stacker is positioned at the rear of the molding machine. It consists of an unscrambling vibratory conveyor (A) that receives the randomly ejected, scrambled containers from under the mold. The cups are then elevated to the orienting section. | previous page Copyrighted Materials Copyright 2006 Hanser Publishers Retrieved from Selection of an Appropriate Mold------------------------------- 153 When considering the use of stack molds especially for fast cycling products special measures must be planned to remove the huge amounts of products. Depending on the shape of the product these measures could be any of a number of controlled ejection methods conveyors stackers packing machines etc. Figure shows a typical cup stacker. The stacker is positioned at the rear of the molding machine. It consists of an unscrambling vibratory conveyor A that receives the randomly ejected scrambled containers from under the mold. The cups are then elevated to the orienting section B and moved to the stacking section C where they are counted to the required stack length. The stack is moved to the staging table D . From there the stacks are removed by hand and packed into boxes. Production depending on product size ranges from 2 400 to 12 000 pieces hour. Figure shows a typical lid stacker for round lids in a range from 3 to in. diameter. The randomly ejected lids are moved by in-press conveyors onto a twin-disc unscrambler A . The lids are then single-filed from each disc and oriented ready for stacking in two lanes up the elevating conveyor B to the stacking system waterfall C . Next the flow is split again and four lanes D enter the spin bar stacking section E . Stacks are cut to length ready for transfer to the tray loading section F . The automatic tray feeder G moves the cardboard trays under the stacked lids four stacks at a time and moves the loaded boxes to the unloading station H from where they are hand packed into cartons. Figure shows a CHSV retrieval transfer and stacking system seen from the side where the molding machine would be located. Arms enter between the open 2 x 8 container stack mold. Eight suction cups face the cores in each level. The ejected containers are held
