Recording of trash in a fiber preparation system

Abstract

A method and associated device and system are provided for recording trash in a fiber preparation system having a plurality of cleaning points and a transport line that is connected to the cleaning points and is guided into a central container connected to a negative pressure source for generating transport air. The trash is suctioned from each cleaning point through the transport line with the transport air to the central container and is feed separately from each cleaning point to the central container. In the central container, the trash is separated from the transport air and transferred into a scale for weighing. With the trash located on the scale, an optical recording of the trash is made with a camera directed to an interior of the scale.

Claims

1. A method for recording trash in a fiber preparation system used in a spinning mill to prepare fibers or fiber flocks from fiber bales for subsequent spinning, the fiber preparation system having a plurality of cleaning points and a transport line that is connected to the cleaning points and is guided into a central container, the central container connected to a negative pressure source for generating transport air, the method comprising: suctioning the trash from each cleaning point through the transport line with the transport air to the central container; separately feeding the trash from each cleaning point to the central container; in the central container, separating the trash from the transport air and transferring the trash into a scale and weighing the trash; and with the trash located on the scale, optically recording the trash with a camera directed to an interior of the scale.

2. The method according to claim 1, wherein after the trash has been weighed and optically recorded, the method further comprising emptying the trash from the scale into a waste via a flap located in a bottom of the scale.

3. The method according to claim 1, further comprising determining a quality characteristic of the trash by evaluating an optical image from the optically recording process.

4. A method for recording trash in a fiber preparation system having a plurality of cleaning points and a transport line that is connected to the cleaning points and is guided into a central container, the central container connected to a negative pressure source for generating transport air, the method comprising: suctioning the trash from each cleaning point through the transport line with the transport air to the central container; separately feeding the trash from each cleaning point to the central container; in the central container, separating the trash from the transport air and transferring the trash into a scale and weighing trash; with the trash located on the scale, optically recording the trash with a camera directed to an interior of the scale; determining a quality characteristic of the trash by evaluating an optical image from the optically recording process; and further comprising using the quality characteristic to optimize a setting of the cleaning point corresponding to where the trash was collected.

5. A device for recording trash in a fiber preparation system used in a spinning mill to prepare fibers or fiber flocks from fiber bales for subsequent spinning, the fiber preparation system having a plurality of cleaning points, the device comprising: a transport line connected to the cleaning points and guided into a central container; a negative pressure source for generating transport air; a separate connection of each of the cleaning points to the transport line, the connection comprising a separate shut-off element for each respective cleaning point; the central container comprising a transport air separator and a scale; and the central container comprising a camera directed into an interior of the scale to optically record the trash located in the scale.

6. The device according to claim 5, wherein the scale comprises a bottom, the bottom comprising a flap for emptying the trash from the central container.

7. A fiber preparation system having a plurality of cleaning points, comprising: a device for recording trash, the device comprising: a transport line connected to the cleaning points and guided into a central container; a negative pressure source for generating transport air; a connection of each of the cleaning points to the transport line, the connection comprising a shut-off element; the central container comprising a transport air separator and a scale; and the central container comprising a camera directed into an interior of the scale to optically record the trash located in the scale; a controller, the controller configured: to evaluate an optical image of fiber material entering the fiber preparation system and calculate a quality characteristic of the fiber material; and use the quality characteristic as a basis for adjustment of the cleaning points.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention is described below with reference to an exemplary embodiment and explained in more detail by means of the drawings, in which:

(2) FIG. 1 is a schematic view of a fiber preparation system having a device according to the invention, and

(3) FIG. 2 is a schematic view of a central container for recording the trash according to the invention.

DETAILED DESCRIPTION

(4) Reference will now be made to embodiments of the invention, one or more examples of which are shown in the drawings. Each embodiment is provided by way of explanation of the invention, and not as a limitation of the invention. For example features illustrated or described as part of one embodiment can be combined with another embodiment to yield still another embodiment. It is intended that the present invention include these and other modifications and variations to the embodiments described herein.

(5) FIG. 1 is a schematic view of a fiber preparation system having a device according to the invention. Fibers or fiber flocks to be processed are fed into a coarse cleaner 2 via a fiber feed 1 (not shown in detail). The fibers pass from the coarse cleaner 2 to the fine cleaner 4 via a conveying line 3, and pass from said fine cleaner 4 to a carder 6 via a further conveying line 5. After the fibers or the fiber flocks have been guided through the various cleaning and processing stages, they leave the carder 6 in the form of a sliver 7 for further processing. In the embodiment shown, a cleaning point is provided in each case on the coarse cleaner 2 and the fine cleaner 4. The carder 6 in which the fibers are introduced via a filling chute 8 and then undergo coarse cleaning in a licker-in 9 and are transferred to a drum 10. At the circumference of the drum 10, the fibers are further cleaned and parallelized and then pass via a doffer into a sliver-forming unit 11, by means of which the fibers are formed into a sliver 7. In the embodiment shown, the carder 6 has a cleaning point on the licker-in 9 and a further cleaning point on the drum 10.

(6) The cleaning points are individually connected to a transport line 12, which is used to remove trash which is produced in the cleaning points. The cleaning point of the coarse cleaner 2 is thus connected to the transport line 12 via the connection 13, a shut-off element 14 being provided in the connection 13. The connection 13 can be closed by the shut-off element 14 and the cleaning point of the coarse cleaner 2 can thus be decoupled from the transport line 12. Furthermore, the cleaning point of the fine cleaner 4 is connected to the transport line 12 via the connection 15, a shut-off element 16 being provided in the connection 15. Furthermore, the cleaning point of the licker-in 9 of the carder 6 is connected to the transport line 12 via the connection 17, a shut-off element 18 being provided in the connection 17. Furthermore, the cleaning point of the drum 10 of the carder 6 is connected to the transport line 12 via the connection 19, a shut-off element 20 being provided in the connection 19.

(7) The transport line 12 is connected to a central container 21 and has an air inlet opening at the end thereof that is opposite the central container. The transport line 12 is connected to a negative pressure source 26, a fan in the embodiment shown, via the central container. The fan generates the transport air required to suction the trash away at the various cleaning points.

(8) The central container 21 comprises a transport air separator 22, a scale and a camera 25 directed to the interior of the scale 24. The scale 24 and the camera 25 as well as the fan 26 and the shut-off elements 14, 16, 18 and 20 are connected to a controller 27. A transfer of the trash from a cleaning point is initiated by the controller 21. For this purpose, the shut-off element 14 in the connection 13 of the cleaning point of the coarse cleaner 2 is opened and the fan 26 is switched on, for example. The trash of the coarse cleaner 2 is thus suctioned through the transport line 12 into the central container 21, freed from the transport air and filled into the scale 24. The process of filling the scale 24 is completed by closing the shut-off element 14. The trash is then weighed and optically recorded by the camera 25. The various cleaning points are emptied successively in this way, and the trash suctioned away therefrom is fed to the central container 21. After the trash has been weighed and visually recorded, the controller carries out an analysis of the trash.

(9) FIG. 2 is a schematic view of a central container 21 for recording the trash 31 according to the invention. The trash 31, together with the transport air 23, passes into the transport air separator 22 via the transport line 12. The transport air 23 is separated from the trash 31 by the transport air separator 22, the trash 31 passes into the scale 24, and the transport air 23 is discharged using the negative pressure source (not shown). The trash 31 is then weighed and optically recorded by a camera 25. The bottom 29 of the scale 24 is designed as a flap 30. After the trash 31 has been weighed and optically recorded, the flap 30 is opened and the contents of the scale 24 are emptied into a waste container 32. After the flap 30 is closed again, the trash of a further cleaning point can be brought into the central container 21.

(10) The present invention is not limited to the embodiments shown and described. Modifications within the scope of the claims are possible, as is a combination of the features, even if these are shown and described in different embodiments.

LIST OF REFERENCE SIGNS

(11) 1 Fiber feed 2 Coarse cleaner 3 Conveying line 4 Fine cleaner 5 Conveying line 6 Carder 7 Sliver 8 Filling chute 9 Licker-in 10 Drum 11 Sliver-forming unit 12 Transport line 13, 15, 17, 19 Connection 14, 16, 18, 20 Shut-off element 21 Central container 22 Transport air separator 23 Transport air 24 Scale 25 Camera 26 Negative pressure source 27 Controller 28 Air inlet opening 29 Bottom of the scale 30 Flap 31 Trash 32 Waste container