The invention discloses an automatic feeding and stacking mechanism for steel pipe hot-dip galvanizing pretreatment in the technical field of steel pipe machining. The automatic feeding and stacking mechanism comprises a first conveyor, a lifting and clamping mechanism, a second conveyor, a self-weight material blocking mechanism, a movable skip car and a safety fence, a supporting frame is provided with chains, the chains are in transmission fit with chain wheels, the lifting and clamping mechanism is arranged at the front end of the first conveyor, the second conveyor and the first conveyorare the same in structural composition, the self-weight material blocking mechanism is arranged between the first conveyor and the second conveyor, and the movable skip car is arranged at the front end of the second conveyor. According to the automatic feeding and stacking mechanism for the steel pipe hot-dip galvanizing pretreatment, the number of workers and labor intensity required for feedingof steel pipe hot-dip galvanizing pretreatment are reduced, and the whole feeding section work can be completed only by one to two persons through the automatic feeding and stacking mechanism for thesteel pipe hot-dip galvanizing pretreatment; and the automatic feeding and stacking mechanism for the steel pipe hot-dip galvanizing pretreatment increases the acid pickling feeding speed and meets the requirement for higher productivity of steel pipe hot-dip galvanizing.

本发明公开了钢管加工技术领域的一种钢管热浸镀锌前处理自动上料码垛机构，包括，一号输送机，所述支撑架上设有链条，所述链条与链轮传动配合；举升夹紧机构，所述举升夹紧机构设于一号输送机前端；二号输送机，所述二号输送机与一号输送机结构组成相同；自重拦料机构，所述自重拦料机构设于一号输送机与二号输送机之间；移动料车，所述移动料车设于二号输送机前端；安全围栏；本发明减少钢管热浸镀锌前处理上料所需工人数量及劳动强度，钢管热浸镀锌前处理自动上料码垛机构只需一至两人即可完成整个上料段工作；本发明的钢管热浸镀锌前处理自动上料码垛机构提高酸洗上料速度，满足钢管热浸镀锌更大产能需要。