US 2020/0409333 A1Published application

Method for operating an extrusion system and extrusion system

OwnerHarald Hepkeinventor

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Abstract

A method for operating an extrusion system with the automatically executed steps of detecting, on a time-dependent basis, at least two operating parameters, which are selected from the following list: a screw rotational speed parameter, from which the number of rotations made by an endless screw of an extruder of the extrusion system as of a predefined point in time can be determined, and/or a torque characteristic value, which describes the torque applied to the endless screw, and/or an operating pressure in a cylinder of the extruder and/or an abrasion parameter, which describes an abrasiveness of material processed in the extruder, calculating, from the operating parameters, a wear parameter, more particularly a time for maintenance, which encodes a wear state of at least one component of the extruder, and outputting a maintenance message, which encodes the wear parameter.

Claims6

Dependent claims

A method for operating an extrusion system (10) with the automatically executed steps:

(a) time-dependent detecting of at least two operating parameters (P), which are selected from the following list:
(i) a screw rotational speed parameter (U), from which is able to be determined the number of rotations which an endless sceew (26) of an extruder (12) of the extrusion system (10) has carried out since a predefined point in time, and/or
(ii) a torque characteristic, which describes the torque (M) which is applied to the endless screw (26), and/or
(iii) an operating pressure in a cylinder of the extruder (12) and/or
(iv) an abrasion parameter (C), which describes an abrasivenss of material processed in the extruder (12),
(b) calculating from the operating parameters (P) a wear parameter (), comprising a time for maintenance (Tw), which encodes a wear state at least of one component of the extruder (12), wherein the time for maintenance (Tw) is calculated from the earliest point in time at which a threshold (Bp, max, BM, max, Umax, Hmax) corresponding to the operating parameters (P) is reached, and
(c) outputting of a maintenance message, which encodes the wear parameter.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/959,211Filed 18 Dec 2018
Priority: DE 10 2018 100 455.910 Jan 2018
Published: 31 Dec 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

G05B 19/4065
Characterised by monitoring or safety: monitoring tool breakage, life or condition
B29B 7/726
Measuring, controlling or regulating: measuring properties of mixture, e.g. temperature or density
B29B 7/728
Measuring, controlling or regulating: measuring data of the driving system, e.g. torque, speed, power, vibration
B29B 7/7495
Systems, i.e. flow charts or diagrams; Plants: for mixing rubber