Benefits Of Multi-Layer Hot Runner Mold
ompared to conventional single-sided injection molds, the use of stacked hot runner molds allows the plastic melt to be evenly distributed into two separate parting surfaces, thereby more than doubling the throughput of the injection molding machine.
Double the production of parts
The stacked hot runner mold technology does not increase the size of the mold by adding more cavities. Instead, the second layer cavity is added to the first layer while maintaining the original mold size and the size of the injection molding machine. The cavities are parallel. The injection, compaction, and cooling times of the stacked hot runner molds are maintained at the same level, increasing the mold opening and closing time throughout the duty cycle.
Reduce the price of parts
The price of the part depends on the working hours of the injection molding machine, and this cost is directly related to the clamping tonnage of the injection molding machine. A stacked hot runner mold requires only about 50% of the clamping tonnage compared to a single-sided mold having the same number of cavities. For example, a set of 8+8 cavity laminar hot runner molds can replace a single-sided mold designed with 16 cavities, and the required injection molding machine requires only half the size, which means that the mold used is smaller. The size of the injection molding machine is also small.
However, its production capacity and throughput are the same as those for the 16 cavity. However, a 16-cavity single-sided mold needs to be run on a 600t injection press, and a set of 8+8 cavity laminated molds requires only a 300t injection press, which enables injection molding. The machine’s working hours were reduced by 43%.
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