Product assembly line

The utility model relates to a product assembly line which is mainly composed of a double-layer assembly line body, a head end lifting pull rod device, a tail end lifting propelling device and a circulation station trolley, the devices at the head end and the tail end of the assembly line and the line body are arranged in a linear mode, the circulation station trolley is placed in the double-layer assembly line body, and the station trolleys are fully distributed on the lower layer of the double-layer assembly line body. And the station trolleys are tightly close to each other end to end. Automatic circulation of the station trolley in the line body between the upper layer and the lower layer is achieved, the cyclic utilization rate of the assembly station is improved, the universality of assembly work is enhanced, and flexible adjustment of the assembly work space is guaranteed. 本实用新型涉及一种产品装配流水线，主要由双层流水线体、首端升降拉杆装置、末端升降推进装置及循环工位车组成，流水线首末两端的装置与线体呈直线型布局，循环工位车摆放在双层流水线体中，双层流水线体下层布满工位车，工位车之间首尾紧密靠在一起。本实用新型实现线体内的工位车