密码机面壳注射模设计

Design of injection mould for cipher machine face shell

分析了密码机面壳的注射成型工艺,指出了模具设计的难点,模具运用潜伏式浇口避免了在制品表面留下浇口痕迹,设计循环式冷却系统提高了制品精度,采用斜推杆实现了制品内侧倒扣的成型与抽芯。实践证明,模具结构合理,工作稳定,成型的制品质量合格。

The injection moulding process for a cipher machine face shell was analyzed and the mould design difficulty was pointed out. The use of submarine gate prevents the gate mark from being on the surface; the circulating cooling system increases the products accuracy; and the application of angle ejector pin achieves the moulding and core-pulling of the product with inside upended structure.