Device for producing a reinforcing structure, which comprises a fiber-reinforced strip including a thermoplastic material, on a molded body surface, wherein D has the following features: - device comprises a contact pressure unit for pressing the strip onto the molded body surface; - the strip can be positioned between the contact pressure unit and the molded body surface in such a way that a contact pressure portion of the strip can be brought into contact with the contact pressure unit and the molded body surface, with the result that the strip can be subjected to a force in the direction of the molded body surface by means of the contact pressure unit; - device comprises a translation and/or rotation unit, which is coupled in terms of motion to the molded body and/or to the contact pressure unit, with the result that a motion and/or a rotation of the molded body relative to the contact pressure unit can be achieved, whereby the strip can be applied to the molded body surface, wherein the contact pressure unit moves in a direction of relative motion with respect to the molded body surface, and the strip is pulled in a pulling direction in relation to the contact pressure unit; - device comprises at least one laser diode array (110, 120) having a multiplicity of laser diodes for irradiating a heating surface of the strip ahead of the contact pressure region of the strip in the pulling direction, and/or for irradiating a heating surface of the molded body after the contact pressure region in the direction of relative motion; and - the strip can be melted locally in the region of the heating surface thereof and/or the molded body surface can be melted locally in the region of the heating surface thereof by irradiation by means of the laser diode array (110, 120), thus making it possible to join the strip to the molded body by pressing the strip onto the molded body surface by means of the contact pressure unit, wherein device is characterized in that the laser diode array (110, 120) is adapted to emit a radiation field which causes such a nonuniform intensity distribution on the heating surface of the strip that the radiation intensity on the heating surface of the strip decreases in the pulling direction, at least in sections, the emission direction vectors of at least two laser diodes are aligned in a nonparallel manner to one another and are directed toward one another in the direction of the heating surface (12, 32)/heating surfaces (12, 32). - device comprises a contact pressure unit for pressing the strip onto the molded body surface; - the strip can be positioned between the contact pressure unit and the molded body surface in such a way that a contact pressure portion of the strip can be brought into contact with the contact pressure unit and the molded body surface, with the result that the strip can be subjected to a force in the direction of the molded body surface by means of the contact pressure unit; - device comprises a translation and/or rotation unit, which is coupled in terms of motion to the molded body and/or to the contact pressure unit, with the result that a motion and/or a rotation of the molded body relative to the contact pressure unit can be achieved, whereby the strip can be applied to the molded body surface, wherein the contact pressure unit moves in a direction of relative motion with respect to the molded body surface, and the strip is pulled in a pulling direction in relation to the contact pressure unit; - device comprises at least one laser diode array (110, 120) having a multiplicity of laser diodes for irradiating a heating surface of the strip ahead of the contact pressure region of the strip in the pulling direction, and/or for irradiating a heating surface of the molded body after the contact pressure region in the direction of relative motion; and - the strip can be melted locally in the region of the heating surface thereof and/or the molded body surface can be melted locally in the region of the heating surface thereof by irradiation by means of the laser diode array (110, 120), thus making it possible to join the strip to the molded body by pressing the strip onto the molded body surface by means of the contact pressure unit,