The utility model relates to a paper expansion chuck comprises a core shaft, and is characterized in that the cam mechanism is arranged outside the mandrel, the cam mechanism is composed of the following: a cam on the outer surface of the spindle and the periphery of the cam sleeve shell, the shell shell is provided with a guide hole, the sliding plate installed in the guide hole, the outer the surface of the sliding plate is an arc, the inner surface of the cam shape, cylindrical pin mounted sliding plate and the core shaft, the positioning plate installed at both ends of the cylindrical pin; the core shaft end is installed on the end cover, the other end is arranged on the flange. The contact area of the utility model and the core tube of the base paper is large, and the pressure of the core tube of the paper base is symmetrical and the unit pressure is small, and the core cylinder can not be broken. The utility model has the advantages of simple operation, easy breakage and no need of maintenance.
【技术实现步骤摘要】
【技术保护点】
膨胀式原纸夹头，包括芯轴，其特征在于芯轴外设置有凸轮机构，所述凸轮机构构成如下：在心轴的外表面有凸轮，凸轮的外围套有壳体，所述壳体壳体上开有导向孔，导向孔内安装滑动板，所述滑动板的外表面为圆弧，内表面为凸轮形状，滑动板与芯轴间安装圆柱销，圆柱销两端安装定位板；芯轴一端端面上安装端盖，另一端安装在法兰上。
【技术特征摘要】
【专利技术属性】
技术研发人员：戴永斌，
申请(专利权)人：无锡市艾可密封技术有限公司，
类型：实用新型
国别省市：32[中国|江苏]
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