MILL FOR ASSEMBLING AND WELDING LONGITUDINAL WELDED PIPES Russian patent published in 2018 - IPC B21C37/08 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to the production of large diameter pipes. Mill includes means for feeding a tube blank with a transport roller table with a longitudinal axis passing through a welding cage with radially located pressure rollers, designed to compress the tube billet transported along the transport roller table, as well as a longitudinally oriented guide knife, a welding trolley with rollers so that the rollers can rotate along the inner surface of the tube billet as it moves through the assembly welding cage. Ability to assemble the pipe blank, regardless of the size on the inside, with guaranteed alignment of the edges of the pipe blank is ensured by the fact that welding trolley is rigidly connected to the supporting elements of the assembly and welding stand by means of a vertically oriented longitudinally oriented connecting knife, and guide knife is designed to position the pipe blank by opening the edges in a position for 12 hours and is mounted on the support elements of the assembly and welding stand with the possibility of vertical movement and fixation, on the welding trolley, a welding head is mounted with the possibility of vertical movement to guide the edges of the tube blank and the upwardly facing pressure roller with the possibility of moving in the vertical direction to influence the edges of the tube blank from the inside, one of the roller beams is mounted vertically with the possibility of influencing the edges of the pipe blank from the outside.

EFFECT: ensured ability to assemble the pipe blank, regardless of the size on the inside, with guaranteed alignment of the edges of the pipe blank.

1 cl, 4 dwg