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Recently, the demand for more accurate plastic lenses has been intensifying. In line with this, the demand for more accurate mold clamping units for injection molding machines has also been increasing in order to "stably mold highly accurate products at a low defective fraction." Molding consists of various processes including mold opening/closing, filling and cooling, and it is considered that different types of defective molding may occur in different processes. In other words, we cannot increase the accuracy of mold clamping units unless we know the mold clamping behavior during molding. This paper introduces the measuring technology for determining the mold clamping behavior, and describes the requirements for a high-accuracy mold clamping unit identified from measurement data, and ML200, which adopts a non-contact center press mold clamping unit that meets these requirements.
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