Overview
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Raphaël ROUX: Technical and sales manager - JSW France injection molding machines
INTRODUCTION
All injection molding machines have identical basic functions: injection, plasticizing, mold opening, part ejection, mold closing. Traditionally, plastic injection processors have used injection molding machines based on a hydraulic system. Since the early 1980s, a new alternative to the hydraulic system has emerged: the all-electric horizontal injection molding machine.
This concept of injection molding machines was invented in Japan. The main functions remain the same as those of a traditional press, but the clamping, ejection and injection cylinders, as well as the plasticizing motor, have been replaced by servomotors and ball cylinders linked by a transmission system. All movements are controlled by a numerical controller.
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Horizontal electric injection molding machines
Design
The market
For twenty years, electric injection molding machines were considered marginal and remained confined to cutting-edge sectors such as connector technology, optics, medical technology or the production of parts requiring high precision. Since 2004, however, they have become a common working tool that can be transposed to most production processes previously carried out on hydraulic injection molding machines.
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