Roof laser brazing system

A roof laser brazing system which laser-brazes a roof panel to opposite side panels based on a body including the opposite side panels, comprising:

• a side home position jig installed at each of opposite sides of a transferring path of the body in a brazing section set along the transferring path of the body, the side home position jig restricting the opposite side panels of the body;
• a roof-pressing jig detachably mounted on a handling robot, that is docked to the side home position jig, and that home-positions and presses the roof panel loaded on the opposite side panels;
• a brazing device mounted on at least one brazing robot in the side home position jig side, the brazing device brazing bonding portions between the opposite side panels and the roof panel using a laser as a heat source;
• a gap measurement sensor mounted on the brazing device and that measures matching gaps between the roof panel and the opposite side panels that are pressed by the roof-pressing jig;
• a grinding device mounted on at least one grinding robot in a grinding section set along the transferring path of the body, the grinding device grinding brazing beads of the bonding portions between the opposite side panels and the roof panel;
• and
• a bead inspection unit including a profile sensor installed at the grinding device, that inspects a brazing bead ground by the grinding device, and that senses a position of the body, the bead inspection profile sensor including a mounting bracket installed at the grinding device such that the mounting bracket and the grinding device are rotatable by the at least one grinding robot,
• wherein the roof-pressing jig includes:
• a jig frame mounted on the handling robot;
• a restriction pad installed at each of left and right sides of the jig frame and that supports opposite side edges of the roof panel along a length direction of the opposite side panels;
• a plurality of vacuum cups installed at the jig frame, that respectively pass through a plurality of penetration holes continuously formed in the restriction pad along the opposite side edges of the roof panel, and that vacuum-adsorb skin surfaces of the opposite side edges of the roof panel;
• a restriction pin that is vertically movable at the jig frame in a front end side of the restriction pad and is inserted upwardly from a lower side with respect to a restriction hole formed in the roof panel;
• a restriction pin cylinder connected to the restriction pin so that the restriction pin is vertically moved and is installed at the jig frame;
• a reference pin installed to be vertically movable at the jig frame in a rear end side of the restriction pad and that is inserted downwardly from an upper side with respect to a reference hole formed in the roof panel;
• and
• a reference pin cylinder connected to the reference pin so that the reference pin is vertically moved and is installed at the jig frame.