A sprue structure of a high-precision tooth profile helical gear injection mold
The material head structure design, which combines single-point casting and annular waterfall casting, solves the weld line problem caused by multi-point casting, improves the meshing accuracy and surface quality of gears, and enables convenient separation and removal of the material head.
CN122401784APending Publication Date: 2026-07-17NINGBO JINGCHENG MOTOR CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NINGBO JINGCHENG MOTOR CO LTD
- Filing Date
- 2026-04-13
- Publication Date
- 2026-07-17
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Figure CN122401784A_ABST
Abstract
本申请涉及齿轮模具技术领域，更具体地涉及一种高精度齿形斜齿轮注塑模具的料头结构，包括：竖柱本体、浇口套、活动模座和脱料头套，活动模座包括第二板主体和第三活动板组，本发明通过在竖柱本体的侧壁与浇口套的第三仿形孔的孔口之间设置环形通道，实现环形瀑布式进浇，保障流体状物料在斜齿轮廓各位置具有相近熔体温度、黏度、压力及前锋推进速度，以降低制品斜齿轮的齿面产生熔接线的风险；通过在第三仿形孔孔口处设置刃口，以及脱料头套和浇口套的结构设计，使得活动模座整体上移时，可使制品斜齿轮与料头通过刃口分离，当第二板主体单独上移后，脱料头套上的弹性件会将料头弹出，以便于外部机械手抓取料头，实现可分断并排出料头的优势。
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