Combined mechanism

The utility model discloses a combined mechanism which is used for connecting two hemispheres together in a pressing mode and comprises a machine table, a fixed backrest installed on the machine table and a movable backrest capable of being close to or away from the fixed backrest, and the surfaces, used for being connected with the hemispheres in an abutting mode, of the fixed backrest and the movable backrest are provided with inwards-concave cambered surfaces matched with the hemispheres. The device at least has the following advantages that the working efficiency is greatly improved, and the product combination quality is improved. 本实用新型公开了一种组合机构，用于将两半球压接在一起，包括机台、安装于机台上的固定靠背、可靠近或远离固定靠背的活动靠背，固定靠背与活动靠背用于与半球抵接的表面具有与半球适配的内凹弧面。本实用新型至少包括以下优点：极大地提高了工作效率且提高了产品组合的质量。