Patent DE-102008033797-A1 (DE)
Title: Welding device to thermally connect and separate metallic workpieces, comprises heat supply device for creating joint on workpieces, cooling device for cooling location on the joint and/or area directly above heat-supplied point, and robot
Inventor: REBHAN DIETER
IPC: B23K37/00
Filed: 2008-07-18
Abstract: The welding device (1) comprises a heat supply device for creating a joint that is made of solidified melt product on workpieces (2, 3), a cooling device (9) for cooling a location on the joint and/or an area directly above a heat-supplied point by using compact dry ices and/or for cooling the flanks or the circumferential area of the joint and/or the area directly above the heat-supplied point by using compact dry ices, and a robot, and an alternating system arranged at the robot to receive a tool that the heat supply device and comprises a part of the cooling device. The welding device (1) comprises a heat supply device for creating a joint that is made of solidified melt product on workpieces (2, 3), a cooling device (9) for cooling a location on the joint and/or an area directly above a heat-supplied point by using compact dry ices and/or for cooling the flanks or the circumferential area of the joint and/or the area directly above the heat-supplied point by using compact dry ices, and a robot, and an alternating system arranged at the robot to receive a tool that the heat supply device and comprises a part of the cooling device. The cooling device has a conveying device for conveying the dry ices in the form of bulk material such as pellets and nuggets or individual pieces such as bars, blocks, ingot boards and plates, a container for receiving the dry ices in the form of bulk material such as pellets and nuggets, a magazine for receiving the dry ices in a predetermined maximum number or a predetermined maximum volumes of bodies such as rods, pellets, nuggets, bolts, blocks, ingot, boards or plates, a drift, which press the dry ice bodies toward an outlet of the magazine under reduction of the volume of the magazine, an apparatus for producing an extruding body from a dry ice mass, a contact body contacting the location to be cooled, an application device for introducing the dry ice on the contact body, and a tracking device for tracking the dry ice with preadjusted rate under a preadjusted pressure. The cooling device is arranged on the location to be cooled for directly introducing the dry ice. The length of the dry ice bodies is larger than their maximum dimension in cross-sectional direction and the cross-sectional shape of the magazine corresponds to the cross-sectional shape of the dry ice bodies. The magazine has a mechanism for refilling during running operation. The contact body is a roller body, which rolls off on the location to be cooled. The heat supply device is formed as a device for gas fusion welding, arc welding or laser beam welding under protective gas, as a device for hard soldering or high temperature soldering with or without supply of protective gas, and as a device for autogenous burner cutting, plasma cutting, laser beam burner cutting, laser beam fusion cutting or laser beam sublimation cutting or for autogenous burner boring, plasma boring, laser beam burner boring, laser beam fusion boring or laser beam sublimation boring. The cooling device follows and/or runs ahead in a predetermined distance. An independent claim is included for a method for thermally connecting metallic workpieces.