Method for automatically regulating the size of a nozzle discharge slot of a nozzle assembly, wherein the nozzle assembly has a first and a second nozzle lip, and a nozzle discharge slot arranged between the nozzle lips for setting in a controlled manner a thickness profile of a conveyable melt, wherein a majority of adjusting elements are arranged at the first nozzle lip, in particular a majority of adjusting pins, which are each coupled to a respective thermoelement, wherein the thermoelements can be controlled by the adjustment in such a way that the slot adjustment can be performed by means of a mechanical force from the respective thermoelement via an associated adjusting element on the first nozzle lip as a result of an expansion or contraction of the thermoelements, wherein at least one clamping blade is arranged respectively in a right-hand and left-hand edge region of the nozzle assembly, wherein the width of the nozzle discharge slot can be set to be variable, wherein the method comprises the following steps, which are performed automatically for adjusting the width of the nozzle discharge slot and for clamping the adjusting elements: unclamping the clamping blade within the nozzle discharge slot; displacing the clamping blade within the nozzle discharge slot; clamping the clamping blade within the nozzle discharge slot for clamping individual adjusting elements, wherein prior to displacing the clamping blade, an examination of a necessity of adjusting the specific setting of the adjusting elements occurs in an edge region, wherein when the clamping blade is displaced, a specific setting of the adjusting elements in an edge region is transferred accordingly to the new nozzle discharge slot. wherein the nozzle assembly has a first and a second nozzle lip, and a nozzle discharge slot arranged between the nozzle lips for setting in a controlled manner a thickness profile of a conveyable melt, wherein a majority of adjusting elements are arranged at the first nozzle lip, in particular a majority of adjusting pins, which are each coupled to a respective thermoelement, wherein the thermoelements can be controlled by the adjustment in such a way that the slot adjustment can be performed by means of a mechanical force from the respective thermoelement via an associated adjusting element on the first nozzle lip as a result of an expansion or contraction of the thermoelements, wherein at least one clamping blade is arranged respectively in a right-hand and left-hand edge region of the nozzle assembly, wherein the width of the nozzle discharge slot can be set to be variable, wherein the method comprises the following steps, which are performed automatically for adjusting the width of the nozzle discharge slot and for clamping the adjusting elements: unclamping the clamping blade within the nozzle discharge slot; displacing the clamping blade within the nozzle discharge slot; clamping the clamping blade within the nozzle discharge slot for clamping individual adjusting elements, unclamping the clamping blade within the nozzle discharge slot; displacing the clamping blade within the nozzle discharge slot; clamping the clamping blade within the nozzle discharge slot for clamping individual adjusting elements, wherein prior to displacing the clamping blade, an examination of a necessity of adjusting the specific setting of the adjusting elements occurs in an edge region, wherein when the clamping blade is displaced, a specific setting of the adjusting elements in an edge region is transferred accordingly to the new nozzle discharge slot.