Method and apparatus for treating a moving surface
OwnerRaimo Rajala, Eino Harkonen +2inventors
InventorsRaimo Rajala, Eino Harkonen, Jouni Paltakari, Olli Asp
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Abstract
A method for treating a moving surface, such as a rotating roller (11) or a moving belt (42), according to which method surface treatment elements (12), such as metallic brushes (12), are pressed against the surface to clean and smooth it. The brushes are cleaned at the edge of the surface. The brushes are connected to an endless chain (16) on which the brushes are moved in a transverse direction by a moving means (17). The apparatus may be mounted in conjunction with a roller or belt or connected to it via a doctor frame (31) or some other supporting structure (47).
Claims18
Method for treating or cleaning a moving surface, such as a rotating roller (11), a moving belt (42) or a similar surface, according to which method at least one surface treatment element (12) is applied against the surface and moved transversely with respect to the direction of motion of the surface, e.g. in the direction of the axis of the rotating roller or the axis of a roller supporting the moving belt, characterized in that
- at least one surface treatment brush or equivalent is moved across the moving surface, such as a rotating roller (11), a moving belt (42) or a similar surface, in a direction transverse to the direction of motion of the surface, said brush being pressed against said surface,
- while the brush is moving transversely across the moving surface, the bristles of the brush are kept pressed against the moving surface so that at least some of the bristles are subjected to a longitudinal compression stress,
- and that the surface treatment brush is passed over the edge of the moving surface so that the bristles are released from the longitudinal compression stress.
Surface treatment apparatus (10) for coating or cleaning a moving surface, such as a rotating roller (11), a moving belt (42) or a similar surface, said apparatus comprising at least one surface treatment element (12) to be applied against the moving surface (11, 42) and means for moving the surface treatment element transversely relative to the direction of motion of the surface, e.g. in the direction of the axis (45) of the rotating roller or the axis of a roller (44) supporting the moving belt, characterized in that the surface treatment apparatus (10) comprises
- at least one surface treatment brush (12) having bristles (37) made of an elastic material,
- means for pressing the points of the bristles (37) of the surface treatment brush (12) against the moving surface (11, 42),
- means for moving the surface treatment brush (12) transversely across the moving surface (11, 42) and further outside the surface so that the bristles (37) of the surface treatment brush are disengaged from the moving surface.
Dependencies are inferred from the claim text.