High-frequency welding method

A high-frequency welding method for welding an accessory to a substrate by means of high-frequency welding machinery, the accessory having a profile with a specific shape and dimensions and wherein the high-frequency welding machinery includes a female mold, comprising a cavity formed by a profile having substantially the same shape and dimensions as the accessory, and a male mold, comprising a relief formed by a profile having substantially the same shape and dimensions as the accessory, wherein the substrate is comprised in a fabric for garments or upholstery, the method comprising:

• mounting the female mold or the male mold on a movable upper plate of the high-frequency welding machinery;
• mounting on a fixed lower plate of the high-frequency welding machinery the female mold, if the male mold is mounted on the upper plate, or the male mold, if the female mold is mounted on the upper plate, in such a manner that the profile of the cavity is aligned in a closure direction of the molds with the profile of the relief in such a manner that, when the female mold is closed on the male mold, the profile of the cavity coincides with the profile of the relief;
• positioning the accessory on the relief, if the male mold is mounted on the fixed lower plate, in such a manner that the profile of the accessory coincides with the profile of the relief or in the cavity, if the female mold is mounted on the fixed lower plate, in such a manner that the profile of the accessory coincides with the profile of the cavity;
• positioning the substrate above the accessory;
• moving the movable upper plate towards the fixed lower plate in such a manner that the accessory is pressed between the cavity and the relief;
• supplying high-frequency welding energy to the movable upper plate and/or to the fixed lower plate so as to weld the accessory to the substrate;
• wherein said method comprises cutting a sheet of material according to the profile with the shape and dimensions desired in order to obtain the accessory;
• and
• wherein said cutting is carried on the same high-frequency welding machine used to carry out the high-frequency welding method, by mounting a cutting mold on the movable upper plate.