Abstract
Plastics injection molding is a sector that is becoming increasingly competitive due to the environmental issues it entails, pressuring consumers to reduce its use. Thus, plastics processing companies attempt to minimize costs, with the aim of increasing competitiveness. This pressure is transmitted to the mold manufacturers, as the mold conditions the equipment that it is used for, which may have significantly different amortization costs. The present work aimed to design a novel mechanism able to deal with the necessary movements in 2K injection molding in a more compact way. A novel hybrid mechanical and hydraulic movement was developed. More compact movements lead to smaller molds, which can be used on smaller injection machines, leading to reduced costs. This methodology consists of multiplying a disproportionate movement to the mold through several movements, which results in a slightly more complex, but much more compact, system for molds devoted to multi-material injected parts.
Highlights
IntroductionMolds are an indispensable tool for obtaining parts of both metals and plastics by injection [1,2]
This work aimed to develop and describe an innovative mechanism integrated in a mold for multi-material injection molding
Important details were worked on to improve the quality of the mold/part, in addition
Summary
Molds are an indispensable tool for obtaining parts of both metals and plastics by injection [1,2]. The evolution of molds over time has been remarkable, both in terms of materials and wear resistance [3], as well as in terms of simulation, allowing the final product quality to be improved [4,5]. The complexity of the obtained shapes requires extra efforts from the field of engineering to find effective and economical solutions that are able to satisfy the demanding requirements of customers. Molds are intended to have the smallest possible volume, as this allows them to be used in injection machines with a shorter distance between columns, a factor that enhances greater mold use flexibility [6]
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