Processing system for protective air-tight door

The invention relates to the field of civil air defense engineering, in particular to a processing system for a protective air-tight door. The system comprises a welding auxiliary device and a conveyor belt positioned below the welding device, the welding auxiliary device comprises a welding frame, a plurality of first telescopic pieces are arranged on the two sides of the welding frame, telescopic piece rotating mechanisms are arranged on the multiple first telescopic pieces on each side, the telescopic piece rotating mechanisms are connected with second telescopic pieces, and grabbing pieces used for fixing workpieces are arranged on the second telescopic pieces. The system has the effect that position and angle of the protective air-tight door during welding can be conveniently changed. 本申请涉及人防工程的领域，尤其是涉及一种用于防护密闭门的加工系统，其包括焊接辅助装置以及位于所述焊接装置下方的传送带；所述焊接辅助装置包括焊接架，所述焊接架的两侧设有若干第一伸缩件，每侧的若干所述第一伸缩件上均设有伸缩件转动机构，所述伸缩件转动机构连接有第二伸缩件，且所述第二伸缩件上设有用于固定工件的抓取件。本申请具有便于改变防护密闭门在焊接时的位置及角度的效果。