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AssigneesBranson Ultraschall, Fentech AG
InventorsJörg Vetter, Peter Eugster, Beat Bruderer
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A method and an apparatus are described for the production of a mitered corner joint between parts of a frame, by vibration welding. During the welding procedure, in each case two parts of a frame are displaced by oscillatory heads into mutually perpendicular straight-line translatorial oscillations, the phases of which have been matched to one another in such a way that mitered areas of the two parts of the frame oscillate perpendicularly with respect to a stationary mitered plane and through the same, while the mitered area is retained under a prescribed welding pressure in the system. The method and the apparatus can be used for the simultaneous production of the four corner joints of a frame, in particular of a frame of the moveable or fixed part of windows or of doors. For this, at least four, and preferably eight, oscillatory heads, which displace the parts of the frame into the translatorial oscillations, are synchronized in such a way that their frequencies and amplitudes are the same.
A method for producing a mitered corner joint between two components by vibration welding, in which mutually contacting miter areas of the two components lie in a common fixed miter plane before the start of the welding process, and during the welding process are rubbed against each other through oscillations of the components under prescribed welding pressure, wherein they remain in contact under the prescribed welding pressure, wherein during the welding process the two components are set into mutually perpendicular straight-line translational oscillations, whose phases are matched to each other so that the miter areas of the two components oscillate transverse to the fixed miter plane, and through the plane.
An apparatus for producing a mitered corner joint between mutually contacting miter areas of two components through vibration welding, with two oscillating heads of a vibration system, which heads are each composed of an oscillator to each hold one component, and a stationary part, wherein the two oscillators can be set into oscillation such that they rub the mutually contacting miter areas against each other under a prescribed welding pressure, wherein the oscillators of the two oscillating heads are disposed relatively to each other such that during the welding process they set the components into mutually perpendicular, straight-line translational oscillations.
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