Device for cleaning the roller surfaces of the drafting unit

Abstract

The invention relates to a device on a spinning preparation machine with a drafting system (1) for processing a fibrous material G moved in a conveying direction F by a drafting system, the drafting system having a plurality of, Roll pair (2, 3: 4, 5; 6, 7) comprising upper and lower rolls, with at least two peeling devices (9) and with a vacuum source (U) arranged above the peeling devices (9) Attached suction hoods (AH), the stripping means (9) are respectively in contact with one of the upper rollers (3, 5, 7) with their stripping edges (K) for removing dirt and other contaminants. In order to avoid the accumulation of exfoliated components in the area of ​​the exfoliation device and to improve the suction, it is proposed that each exfoliation device ( 9 ) be attached to its own suction channel ( 11 , 12 , 13 ), wherein each exfoliation device ( 9 ) is The peeling edge (K) of (9) protrudes beyond the suction channel of the peeling edge in the area of ​​the first opening (O1), and each suction channel is fixed to the bottom wall ( 8), wherein each suction channel (11, 12, 13) is provided with a second opening (O2) opposite to the first opening (O1), the second opening and the opening (B1, Opposite one of B2, B3), wherein the suction hood (AH) protrudes beyond the bottom wall opening (B1, B2, B3) and is attached to the bottom wall (8) and the suction channel (11, 12, 13) ) opposite sides.

Description

technical field [0001] The invention relates to a device on a spinning preparation machine having a drafting system with a plurality of roller pairs arranged one behind the other including upper and lower rollers, with at least two elongated stripping devices and There are suction hoods connected to a vacuum source arranged above the stripping devices, each of which is in contact with one of the upper rollers with its stripping edge. Background technique [0002] In order to remove dirt and other constituents deposited on the upper rolls of the drafting system during operation, stripping devices are used in practice, the stripping edges of which come into contact with the circumferential surface of the rolls with a certain pressing force. For example, flexible strippers are used which contact the circumference of the roller at a certain angle of attack and with a certain prestress. The flexible stripper is usually fastened to a holder by which it is fastened to the drafting...

AI Technical Summary

Problems solved by technology

This in turn leads to an increase in the amount of material stripped by the stripping device per unit time

This can lead to the fact that currently known devices are no longer able to continuously remove stripped material (grime, fibers and other components mixed with honeydew) from the area of ​​the stripper

As a result, buildup can occur in this area and ultimately affect the drafting operation

As a result, on the one hand, the stripping function of the corresponding stripper is negatively affected, and on the other hand, when leaving the stripper, these deposits can enter the nip between the upper and lower rolls and thus have a negative impact on the drafting operation. Negative impact

This can lead to uneven fiber sliver formation downstream of the drafting system

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