Patent DE-102009003297-A1 (DE)
Title: Joining device for material joining using an additive material for producing a joint seam, comprises a feeding device for an additive material, a guiding device for an energy beam for melting the additive material, and a sensing element
Inventor: HASCHKE IGOR
IPC: B23K26/02
Filed: 2009-05-20
Abstract: The joining device (10) comprises a feeding device (22) for an additive material (16), where the feeding device is formed to guide the additive material during the operation of the joining device, a guiding device (14) for an energy beam for melting the additive material, and a sensing element (18), which is connected with the feeding device, the additive material and the guiding device for the energy beam, so that a lateral deflection of the sensing element causes a corresponding deflection of the feeding device and the guiding device related to the course of a joint seam to be produced. The joining device (10) comprises a feeding device (22) for an additive material (16), where the feeding device is formed to guide the additive material during the operation of the joining device, a guiding device (14) for an energy beam for melting the additive material, and a sensing element (18), which is connected with the feeding device, the additive material and the guiding device for the energy beam, so that a lateral deflection of the sensing element causes a corresponding deflection of the feeding device and the guiding device related to the course of a joint seam to be produced. The joining device has a base body, which is deflectable in lateral direction in relation to the joint seam to be produced. The sensing element and the guiding device are fixedly connected with the base body. The feeding device is connected with the joining device over a passive pressure element, so that the passive pressure element causes a prestressing force to the distal ends of the additive material in the direction of the joint seam to be produced during the operation of the joining device and the feeding device is coupled with the pressure element in relation to the lateral deflections of the base body. The feeding device is fixedly coupled with the base body in relation to the lateral deflections. The sensing element is connected with the base body, so that a vertical deflection of the sensing element directly causes a vertical deflection of the base body related to the course of the joint seam to be produced. The sensing element is rigidly connected with the base body. The base body is pivotably implemented together with the feeding device and the sensing element around a common pivot axis. The base body is prestressed in the direction of the joint seam to be produced using a spring-elastic element based on the gravitational force or a pneumatic or electromagnetic device. The force exercised in the feeding device using the passive pressure element is less than the force exercised in the joining device using the spring-elastic element based on the gravitational force or the pneumatic or electromagnetic device. The feeding device is trailed in a moving direction of the joining device. The additive material is a wire, which is melted during joining. The sensing element has a channel, over which a fluxing agent and/or an additive gas is supply able during producing the connection. The tip of the sensing element has recesses, which are turned to the feeding device. The joining device includes an actuator, which produces a pendulum movement to the distal ends of the additive material melting at the energy beam and/or energy beam, a focusing device that is designed to position the energy beam in dependent of the distances between the feeding device and the guiding device, and a sensor, which detects a relative movement between the base body and the feeding device. The actuator is designed to cause a movement of the additive material in the vertical direction.