| 摘要 |
PURPOSE: A spiral open nozzle mold of a CRB(Cold Runner Block) for an LSR(Liquid Silicon Rubber) mold is provided to prevent the loss and burrs during molding and improve productivity. CONSTITUTION: A spiral open nozzle mold of a CRB for an LSR mold comprises an upper mold(10), a nozzle body(20), a material injection port(12), an open nozzle(30), a waterproof and heat-insulation part(40), and a cooling water supply tube(50). LSR is put in the upper mold from the top. The nozzle body is integrally formed in the upper mold. The material injection port is to draw in the LSR from the upper mold. The open nozzle is connected to the material injection port in order to cool the LSR. The cooling water supply tube passes through the nozzle body and supplies cooling water to cool a molded product.
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