US 11,999,091 B2
Method for automatically regulating the size of a slot of a nozzle assembly and control and/or regulation system
Torsten Schmitz, Lengerich (DE); Waldemar Colell, Lengerich (DE); Bernd-Alexander Groepper, Lengerich (DE); and Daniel Faustmann, Lengerich (DE)
Assigned to Windmöller & Hölscher KG, Lengerich (DE)
Appl. No. 17/055,375
Filed by Windmöller & Hölscher KG, Lengerich (DE)
PCT Filed May 15, 2019, PCT No. PCT/EP2019/062437
§ 371(c)(1), (2) Date Nov. 13, 2020,
PCT Pub. No. WO2019/219730, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 10 2018 111 766.3 (DE), filed on May 16, 2018.
Prior Publication US 2021/0213668 A1, Jul. 15, 2021
Int. Cl. B29C 48/92 (2019.01); B29C 48/31 (2019.01)
CPC B29C 48/92 (2019.02) [B29C 48/313 (2019.02); B29C 2948/92152 (2019.02); B29C 2948/92409 (2019.02); B29C 2948/92647 (2019.02); B29C 2948/92904 (2019.02)] 13 Claims
OG exemplary drawing
 
1. A method for automatically regulating the size of a nozzle discharge slot of a nozzle assembly, wherein the nozzle assembly comprises 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 plurality of adjusting elements is arranged at the first nozzle lip, which are coupled to a respective thermoelement, wherein the thermoelements are controllable by a regulation in such a way that the slot adjustment can be realized by the action of a mechanical force from the respective 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 respectively arranged in a right-hand and left-hand edge region of the nozzle assembly, wherein the width of the nozzle discharge slot can be variably set, wherein the method comprises the following steps, which are carried out 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; and
clamping the clamping blade within the nozzle discharge slot and fixing individual adjusting elements, wherein prior to displacing the clamping blade, an examination of a necessity of adjusting the specific setting of the adjusting elements is carried out.