Method and device for loading an installation with fibres

Abstract

The invention relates to a method and an apparatus for feeding an installation with fibres, which installation is fed with fibre tufts, the fibre tufts are opened at least partially and fed by means of a feed apparatus to a pneumatic feeding installation, which guides the fibres into the reservoir of at least one fibre-processing machine, especially a flat card, roller card, opener or cleaner. The invention is characterised in that, by means of a regulating circuit into which the actual pressure values measured and further processed in the pneumatic feeding installation are introduced, and into which the mass flow of the further processed fibres measured and further processed at at least one fibre-processing machine is introduced, the optimal operating point of the installation is determined by means of a regulating algorithm, and a signal is passed to an actuator of the feed apparatus for regulating the amount of fibre tufts.

1 . Method for feeding an installation with fibres, which installation is fed with fibre tufts, the fibre tufts are opened at least partially and fed by means of a feed apparatus to a pneumatic feeding installation, which guides the fibres into the reservoir of at least one fibre-processing machine, especially a flat card, roller card, opener or cleaner, characterised in that, by means of a regulating circuit into which the actual pressure values measured and further processed in the pneumatic feeding installation are introduced, and into which the mass flow of the further processed fibres measured and further processed at at least one fibre-processing machine is introduced, the optimal operating point of the installation is determined by means of a regulating algorithm, and a signal is passed to an actuator of the feed apparatus for regulating the amount of fibre tufts. 
     
     
         2 . Method according to  claim 1 , characterised in that the mass flow of the further processed fibres, the pressure difference between a reference variable and a regulating variable, and the difference between the desired production rate and the actual production rate of the mass flow of the further processed fibres are introduced into the regulating circuit. 
     
     
         3 . Method according to  claim 1  or  2 , characterised in that the signal for regulating the feed apparatus is fed back into the regulating circuit, where it again passes through the regulating algorithm. 
     
     
         4 . Method according to any one of the preceding claims, characterised in that the actual pressure values which are measured in the pneumatic feeding installation are converted by a differentiation over time into a corrected actual pressure value, and the resulting difference, with a desired pressure value, is introduced into the regulating circuit. 
     
     
         5 . Method according to any one of the preceding claims, characterised in that, for starting up the spinning room preparation installation, the regulating algorithm starts from a constant mass flow of fed fibre tufts. 
     
     
         6 . Method according to any one of the preceding claims, characterised in that planned or unplanned fluctuating production amounts of at least one fibre-processing machine are processed in the regulating circuit. 
     
     
         7 . Method according to any one of the preceding claims, characterised in that fluctuations in the pneumatic feeding installation through the determined fibre running time are introduced into the regulating circuit. 
     
     
         8 . Method according to any one of the preceding claims, characterised in that the maximum amount of fed fibre tufts can be set manually. 
     
     
         9 . Method according to any one of the preceding claims, characterised in that the desired pressure in the pneumatic feeding installation can be set manually. 
     
     
         10 . Apparatus for feeding an installation with fibres, which installation is fed with fibre tufts, the fibre tufts are opened at least partially and fed by means of a feed apparatus to a pneumatic feeding installation, which guides the fibres into the reservoir of at least one fibre-processing machine, especially a flat card, roller card, opener or cleaner, characterised in that, by means of a regulator (X 2 ) which is part of a regulating circuit into which the actual pressure values (p 1 ) measured and further processed in the pneumatic feeding installation are introduced, and into which the mass flow ({dot over (m)} 1 ) of the further processed fibres measured and further processed at at least one fibre-processing machine is introduced, the optimal operating point of the installation is determined by means of a regulating algorithm, and a signal (z) is passed to an actuator of the feed apparatus for regulating the amount of fibre tufts ({dot over (m)} 2 ). 
     
     
         11 . Apparatus according to  claim 10 , characterised in that a signal relating to the mass flow ({dot over (m)} 1 ) of the further processed fibres, a signal (v) relating to the pressure difference between the reference variable and the regulating variable, and a signal (u) relating to the difference between the desired production rate and the actual production rate of the mass flow ({dot over (m)} 1 ) of the further processed fibres are introduced into the regulator (M 2 ). 
     
     
         12 . Apparatus according to  claim 10  or  11 , characterised in that the signal (z) for regulating the control variable at the feed apparatus is fed back into the regulator (X 2 ), where it passes through the regulating algorithm again. 
     
     
         13 . Apparatus according to any one of the preceding  claims 10  to  12 , characterised in that the actual pressure values (p 1 ) measured in the pneumatic feeding installation are converted by a differentiation over time into a corrected actual pressure value (y) and compared in a regulator (X 3 ) with a desired pressure value, and the resulting difference is introduced as a signal (v) into the regulating circuit. 
     
     
         14 . Apparatus according to any one of the preceding  claims 10  to  13 , characterised in that planned or unplanned fluctuating production amounts of at least one fibre-processing machine are introduced as a signal (w) into the regulator (X 2 ). 
     
     
         15 . Apparatus according to any one of the preceding  claims 10  to  14 , characterised in that the fibre running time in the pneumatic feeding installation is measured and is introduced as a signal (t) into the regulator (X 2 ). 
     
     
         16 . Apparatus according to any one of the preceding  claims 10  to  15 , characterised in that the feed apparatus is in the form of a conveyor belt and/or feed roller ( 1   a ,  1   b ) which are driven via a regulatable drive, wherein the maximum speed of the drive ( 20 ) can be set manually. 
     
     
         17 . Apparatus according to any one of the preceding  claims 10  to  16 , characterised in that the pneumatic feeding installation is in the form at least of a feed and distributor line ( 5 ), the desired pressure of which can be set manually.