Roof laser brazing system

Patent metadata

Field	Value
Publication number	US-10518347-B2
Application number	US-201514948138-A
Country	US
Kind code	B2
Filing date	Nov 20, 2015
Priority date	Jul 31, 2015
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A roof laser brazing system comprises a side home position jig installed at each of opposite sides of the transferring path of the body in the brazing section, a roof-pressing jig detachably mounted on a handling robot, docked to the side home position jig, and that home-positions and presses the roof panel loaded on the opposite side panels, a brazing assembly mounted on at least one brazing robot in the side home position jig side and that brazes bonding portions between the opposite side panels and the roof panel using a laser as a heat source, and a grinding assembly mounted on the at least one grinding robot in the grinding section and that grinds brazing beads of the bonding portions between the opposite side panels and the roof panel.

First claim

What is claimed is:

1. A roof laser brazing system which includes a predetermined brazing section and a predetermined grinding section along a transferring path of a body for bonding a roof panel to opposite side panels based on the body including the opposite side panels, comprising:
a side home position jig installed at each of opposite sides of the transferring path of the body in the brazing section, and that restricts and home-positions the opposite side panels of the body;
a roof-pressing jig detachably mounted on a handling robot, 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 grinding device mounted on at least one grinding robot in the grinding section, 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.

2. The roof laser brazing system of claim 1 , further comprising a gap measurement sensor installed to be movable forward or backward to the brazing device and that measures matching gaps between the roof panel and the opposite side panels pressed by the roof-pressing jig.

3. The roof laser brazing system of claim 2 , wherein the side home position jig home-positions the opposite side panels depending on the matching gaps measured by the gap measurement sensor, and ensures a zero gap between the opposite side panels and the roof panel.

4. The roof laser brazing system of claim 1 , further comprising:
a roof alignment jig installed between the brazing section and the grinding section and aligns the roof panel; and
a roof loading jig detachably installed at the handling robot, that unloads the roof panel from the roof alignment jig, and that loads the roof panel on the opposite side panels.

5. 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.

6. The roof laser brazing system of claim 5 , wherein the side home position jig includes:
a base frame installed at each of the opposite sides of the transferring path with the transferring path of the body therebetween;
a moving frame reciprocally and slidably movable in a width direction of the body through a plurality of guide rails provided in the base frame;
a post frame disposed in a direction perpendicular to opposite sides of the moving frame;
a support frame installed at the post frame along a length direction of the opposite side panels;
a plurality of clampers mounted on the support frame along the transfer direction of the body, that are reciprocally movable in the width direction of the body, and that restrict the opposite side panels; and
a first driving part at the base frame to reciprocally move the moving frame in the width direction of the body.

7. The roof laser brazing system of claim 6 , wherein the first driving part includes:
a first servo motor fixedly mounted on the base frame; and
a lead screw connected to the first servo motor and substantially screw-fixed to the moving frame.

8. The roof laser brazing system of claim 6 , wherein the clampers are reciprocally

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Jin Taeheun
• Sim Minsun
• Choi Jeongho

Classifications

• B23K26/0838

  by using an endless conveyor belt · CPC title

• B23K26/0884

  in at least three axial directions, e.g. manipulators, robots · CPC title

• B23K37/047

  moving work to adjust its position between soldering, welding or cutting steps (B23K37/053 takes precedence) · CPC title

• B23K2101/18

  Sheet panels · CPC title

• B23K2101/006

  Vehicles · CPC title