Welding device for stretch bender

摘要

A welding device for a stretch bender is disclosed. The welding device for the stretch bender may include: an operating unit adapted to move forward toward or rearward from a bending die for shaping a shaped beam and mounted in front of the bending die; and a welding unit mounted at the operating unit and welding flange portions of the shaped beam that is completely formed by the bending die so as to prevent the flange portions from being overlapped with each other when extracting the shaped beam, the welding unit being movable forward or rearward against the operating unit.

主权项

1. A welding device for a stretch bender, comprising:
an operating unit adapted to move forward toward or rearward from a bending die for shaping a shaped beam and mounted in front of the bending die; and a welding unit mounted at the operating unit and welding flange portions of the shaped beam that is completely formed by the bending die so as to prevent the flange portions from being overlapped with each other when extracting the shaped beam, the welding unit being movable forward or rearward against the operating unit, wherein the operating unit comprises: a mounting frame disposed in front of the bending die; a first hinge block disposed at a side of the mounting frame; a second hinge block disposed apart from the first hinge block toward the bending die; a pair of first connecting links having ends hinged respectively to the first hinge block and the second hinge block; a movable frame having a rear end and a middle portion respectively hinged to other ends of the pair of the first connecting links; and a first operating cylinder having an operating rod, a rear end of the first operating cylinder being hinged to an upper portion of the mounting frame and a front end of the operating rod being hinged to a front end portion of the movable frame, and wherein the welding unit comprises: a fixed frame mounted at a front end portion of the movable frame; a second connecting link, one end of the second connecting link being hinged to a front portion of the fixed frame; a third connecting link disposed apart from the second connecting link toward the bending die, a middle portion of the third connecting link being hinged to a front end portion of the fixed frame; a second operating cylinder having an operating rod, a rear end of the second operating cylinder being hinged to an upper portion of the rear end of the fixed frame and a front end of the operating rod being hinged to one end of the third connecting link; a connecting block hinged to the other ends of the second connecting link and the third connecting link; and a welder mounted at the connecting block so as to face the bending die.