Automatic submerged arc welding device for drawing circle shape

The invention relates to the technical field of welding, in particular to a circle drawing type automatic submerged arc welding device which comprises a shell, through shaft openings, a light through opening, a welding slag box, a first sensor, a starting shaft, a gear, an upper rotating plate, a lower rotating plate, a welding head, a rack shaft, an abutting opening and a second sensor. Two through shaft openings are formed in the shell, a rack shaft is arranged between the interiors of the two through shaft openings in a penetrating mode, a light passing opening is formed in the position, located on one side of each through shaft opening, of the shell, a welding slag box is arranged on the outer side of the shell, and a sensor is arranged on the side, close to the light passing opening, of the welding slag box. Welding slag laying, circle drawing and welding are achieved while moving is conducted again. 本发明涉及焊接技术领域，具体为一种画圈形自动埋弧焊装置，其包括：壳体、通轴口、通光口、焊渣盒、传感器一、启动轴、齿轮、上旋转板、下旋转板、焊接头、齿条轴、抵压口、传感器二，所述壳体的两侧均开设有通轴口，两个所述