EP0566831A1 - Mechanical cleaning device for surfaces - Google Patents

Abstract

A device (1) for the mechanical dry and/or wet cleaning of - in particular grained or somewhat irregular, but also smooth - surfaces (2) in particular on panels (3), films or laminates made, for example, of plastic, has at least one cleaning apparatus (7) which has an upper strand (4) and a lower strand (5) and at least two deflector rollers or rolls (6), one strand acting on the surface (2) to be cleaned as a cleaning strand (5) and, owing to the circulation, wiping across this surface. The cleaning apparatus (7) is in this case an approximately web-shaped non-woven fabric (8) which, on its inside facing the deflector rolls (6), is fastened to a smooth, tensile resistant carrier belt (9) and, on its outside facing the surface to be cleaned, has a multiplicity of at least partly convoluted and felted fibres which are able to pick up and carry with them even extremely small particles, even out of depressions. Very fast, because of the simplicity of the device (1), efficient and nevertheless thorough cleaning of sensitive surfaces is thus possible, which is required, for example, in the furniture industry. <IMAGE>

Description

The invention relates to a device for mechanical cleaning - in particular grained - surfaces, in particular on plates, foils or laminates, for example made of plastic, with a cleaning device having an upper run and a lower run and at least two deflecting rollers or rollers, which with the one run as Cleaning strand applied to the surface to be cleaned.

Such a device is known from practice, the cleaning device having bristles on its upper and lower run, so that a rotating brush is formed. This device has proven itself in many applications, but is not sufficient for cleaning if, for example, grained plastic surfaces, in particular black surfaces, have to be cleaned in the furniture industry in order to remove the dust which occurs during production. Neither such cross brushing nor blowing on the surface is sufficient to remove the finest particles that are immersed in the grained surface are safe to remove. At most, these surfaces can be wiped wet, which however makes very expensive machines with far too little volume throughput necessary for the furniture industry.

In other applications too, bristles can be too coarse and too far apart to mechanically remove the finest particles from a surface, in particular if they additionally adhere to the surface.

It is therefore the task of creating a device of the type mentioned at the outset, which allows good cleaning and removal on the finest particles even from grained surfaces, but is simple in structure and construction.

The solution to this apparently contradictory task is that the cleaning device is an approximately band-shaped fleece, which is fastened on its inside facing the deflecting rollers or rollers on a supple, tensile carrier tape and that it is made of a large number of entangled and matted fibers formed outside is pressed in the position of use with its cleaning strand on the surface to be cleaned.

Experiments have shown that the many fine fibers of the nonwoven can pick up and remove even the finest particles even from depressions in a grained surface, the nonwoven also taking up these detached particles due to its structure and surface and transporting them away from the surface to be cleaned.
The result is a very effective cleaning device with a very simple construction, with the fleece having the favorable cleaning properties mentioned, also with regard to very small and fine particles, even in depressions in a surface and its low tensile strength is compensated for by a carrier tape.

It is useful if the carrier tape is a plastic and / or textile tape onto which the fleece is welded, glued and / or sewn. Despite the different layers of the circulating belt used for cleaning, this results in a firm and largely homogeneous bond.

The carrier tape can have ferromagnetic inserts or fibers and the cleaning strand can be guided on a magnet. This is particularly useful when the cleaning strand extends over a relatively large span and there is a risk that it would sag, for example, in a horizontal arrangement, and could be caught by an incoming plate. Such sagging can be prevented by the guidance on a magnet.

A modified solution may consist in the cleaning strand being held on a suction guide arranged between the two strands as it is advanced. Between the runs, either a suction guide or - if a cleaning belt with ferromagnetic inserts is used - a magnet can be arranged as a guide for holding the cleaning strand in a horizontal position, with both guide devices practically not hindering the advancement of the cleaning belt in the direction of rotation.

So that the cleaning belt maintains its centered position despite the force and deflection forces during the cleaning process, it is expedient if the carrier belt is elastic at least in the edge area and the deflection rollers are cambered. Such cambered or crowned deflecting rollers can interact with the elasticity of the edge areas of the carrier tape Center it again or keep it in a centered position.

The fibers of the fleece can consist of plastic, in particular of polyamide. They then have the desired good mechanical properties and good durability at the same time and are not detached from the fleece in order to form impurities.

The direction of movement of the cleaning strand can be directed transversely to the transport direction of the surface to be cleaned towards its longitudinal edges. Contamination is thus removed from the surface in the best possible way and transported away via its lateral edge. This enables a further development in that a device for removing the particles picked up during cleaning is arranged in the area of at least one deflecting roller outside the cleaning area. This means that the cleaning devices can remain in operation for a very long time without trapping particles that have been taken up on the surface to be cleaned, because these are removed outside this surface.

For example, in the area of the deflecting roller outside the cleaning area, a blowing and / or suction device can be provided for removing picked up particles from the fleece. This can be supported by mechanical means that produce a knocking effect or vibration. Since this device for removing picked-up particles is arranged outside the cleaning area, ie outside the area of the surface to be cleaned, the risk of these particles being returned to the surface is also excluded.

A rotating nozzle can be provided as the blowing device for removing the particles taken from the fleece, which at least has an air outlet arranged eccentrically to its pivot bearing, which is additionally oriented obliquely to the direction of rotation and to the axis of the pivot bearing at an acute angle against the direction of rotation. This has the effect that the air outlet itself sets this nozzle in rotation about its axis of rotation, so that the areas of the fleece acted upon by the air nozzle always receive air blows and not only a continuous air flow. This rotation does not require its own drive, however, because the air flow itself causes the rotation due to the inclined position of the air outlet and the eccentric rotary bearing. This arrangement therefore also permits use in other cases where air blasts are to be emitted onto certain areas.

It is particularly expedient for a rapid pulse sequence of the air blasts that occur at a particular point and for a more or less symmetrical rotary movement if at least two air outlets or outlet nozzles are each at a distance from the common axis of rotation and are arranged obliquely in the direction of rotation in approximately the same direction .

The effectiveness of the entire device for cleaning can be increased in that a belt-like and arranged brush is provided parallel to the cleaning belt consisting of a fleece and that this brush is provided parallel to the fleece in the feed direction of the workpiece to be cleaned in front of the fleece , the bristles of the brush being harder than the fibers of the fleece. A cleaning brush can therefore be connected upstream of the cleaning fleece, which removes larger particles or, like stuck coarse particles, loosens them from the surface to such an extent that they can then be picked up and removed by the fleece. Such a combination is therefore of very particularly advantageous importance.

The circumferential fleece and / or the circumferential brush can have a deflection parallel to itself on the strand facing the surface to be cleaned, and only the part of this cleaning strand which is at a greater distance from the opposite strand can be in contact with the surface to be cleaned and from whose central area can be moved towards the edges. In the feed direction of the surface to be cleaned, at least two similar cleaning devices, at least two non-woven tapes, can be provided in parallel, the deflected cleaning areas of which overlap one another in the middle zone of the surface to be cleaned, viewed in the feed direction, one behind the other and in opposite directions to the two longitudinal edges of the surface to be cleaned facing away from one another. It is thereby achieved that in all areas of the surface to be cleaned the absorbed particles are only moved to the longitudinal edges and in the shortest possible way, so that the risk is kept as low as possible that in the transport of absorbed particles across the surface these could fall off again. The dwell time of the particles from their uptake by the fleece to the exceeding of the longitudinal edge of the surface to be cleaned is shortened and thus the cleaning performance is improved.

It is useful if the cleaning tapes and / or brushes are arranged somewhat obliquely to the feed direction of the surface to be cleaned in the sense that the feed speed and the inclination as well as the rotational speed of the cleaning tapes or brushes to one on the surface to be cleaned lead at right angles to their relative movement. As a result, the shortest path away from the surface to be cleaned is achieved for the absorbed particles.

To deflect the cleaning strand - parallel to itself - a guide profile comprising the carrier of the fleece and / or the bristles, preferably an extruded profile, can be provided, which is arranged between the deflection rollers. In this way, the aforementioned deflection on the cleaning strand can be implemented particularly easily. The guide profile and in particular its deflection area may be adjustable in the feed direction of the cleaning run or in the opposite direction, in order to be able to adapt to surfaces of different widths to be cleaned.

A further embodiment of the entire device can consist in that at least one antistatic brush is arranged in the circumferential direction behind the fleece, in particular parallel to the fleece, which can also be designed as an endless belt. Like the upstream brush, it can then optionally be guided and driven on the same deflecting rollers and can undo the electrostatic charges generated by the previous, in particular dry cleaning processes.

For a space-saving and effective device, it is expedient if the distance between the band-shaped cleaning brush and the fleece and / or the antistatic brush is less than the width of the fleece.

This distance has a further advantage, because it makes it possible to provide an air flow oriented in the direction of the cleaning strand in the area of the cleaning fleece as a cross flow that supports cleaning.

The arrangement according to the invention allows a further embodiment in such a way that the cross flow in the area of the fleece and / or the brushes by their rotational speed is produced. Especially if a fleece and a brush arranged parallel to it delimit a type of channel between them, the desired air flow in the feed direction of the cleaning strands of the two cleaning devices can be generated practically automatically with a correspondingly high rotational speed. Effective air flows already occur at circulation speeds of 10 m / sec or more, for example.

The invention allows a further expedient embodiment with which moist or wet cleaning can also be carried out, for example on glass surfaces or other surfaces. A related arrangement can provide that a liquid supply for wetting the surface to be cleaned and the cleaning strand is provided at the beginning of the cleaning strand and fleece and / or the brush and / or in the feed direction before the cleaning strand. So either the brush and the fleece can be wetted directly in order to then wipe the surface with a damp cloth, the liquid can also contain cleaning agents, or the liquid can be sprayed onto the surface to be cleaned immediately before the cleaning strand and then from the cleaning devices be included. A combination of both measures is also possible.

It is then expedient if a suction device for liquid is arranged at the end of the cleaning run or the deflection roller provided there, so that the liquid developing the protection can be removed from the cleaning devices.

A combination of the features and measures described above results in a device for mechanical dry and / or wet cleaning of surfaces, which is simple in construction but has high effectiveness.

Exemplary embodiments of the invention are described in more detail below with reference to the drawing.

Fig. 1

eine erfindungsgemäße Vorrichtung zum mechanischen Reinigen einer Platte, wobei diese Vorrichtung ein Obertrum und ein Untertrum sowie zwei Umlenkwalzen aufweisendes Reinigungsgerät hat, bei dem ein Trum als Reinigungstrum quer zum Vorschub der zu reinigenden Oberfläche bewegt und dabei an diese angedrückt wird.

Fig. 2

in vergrößertem Maßstab einen Teilausschnitt des Reinigungstrums, welches aus einem bandförmigen Vlies und einem dieses tragenden, anschmiegsamen, zugfesten Trägerband besteht,

Fig. 3

einen Ausschnitt einer abgewandelten Vorrichtung, bei welcher parallel zu einem aus einem Vlies mit Trägerband gebildeten Reinigungsgerät außerdem mit etwas Abstand mit Borsten besetzte, bandförmige und ebenfalls ein Reinigungstrum aufweisende Reinigungsgeräte angeordnet sind,

Fig. 4

eine weiter abgewandelte Anordnung, bei welcher zwei gegensinnig antreibbare, in Vorschubrichtung an der zu reinigenden Oberfläche etwas hintereinander und sich überlappend angeordnete Reinigungsgeräte vorgesehen sind, die jeweils etwa eine Hälfte der zu reinigenden Oberfläche von der Mitte zu ihrem Rand hin bearbeiten,

Fig. 5

eine der Figur 4 entsprechende Anordnung, bei welcher die Reinigungsgeräte in Vorschubrichtung der zu reinigenden Oberfläche schräg zum Rand hin gerichtet sind,

Fig. 6

ein Reinigungsgerät dessen Reinigungstrum in seinem Verlauf parallel zu sich selbst ausgelenkt ist und somit nur etwa eine Hälfte der zu reinigenden Oberfläche beaufschlagt, wobei ein analoges Reinigungsgerät für die Unterseite der zu reinigenden Platte vorgesehen ist.

Fig. 7

in schaubildlicher Darstellung die Anordnung gemäß Figur 6, wobei dargestellt ist, daß in Vorschubrichtung hinter einem ersten Reinigungsgerät ein zweites Reinigungsgerät mit gegensinnig ausgelenktem Reinigungstrum und entgegengesetzter Bewegungsrichtung dieses Reinigungstrums vorgesehen ist und um auch die zweite Hälfte der Platte zu reinigen, sowie

Fig. 8

eine etwa der Figur 1 entsprechende Darstellung einer abgewandelten Ausführungsform einer Vorrichtung, bei welcher im Anfangsbereich des Reinigungstrums eine Flüssigkeitszufuhr angeordnet ist mit welcher auch Reinigungsmittel zugeführt werden können.

It shows in a schematic representation:

Fig. 1

a device according to the invention for the mechanical cleaning of a plate, this device having an upper run and a lower run as well as two deflecting rollers having cleaning device, in which a run as a cleaning run is moved transversely to the feed of the surface to be cleaned and is pressed against it.

Fig. 2

on an enlarged scale, a partial section of the cleaning strand, which consists of a band-shaped fleece and a supple, supple, support band that supports it,

Fig. 3

1 shows a detail of a modified device, in which, in addition to a cleaning device formed from a nonwoven with a carrier tape, there are also bristle-shaped, band-shaped cleaning devices which also have a cleaning strand,

Fig. 4

a further modified arrangement, in which two oppositely drivable cleaning devices are provided, one behind the other and overlapping in the feed direction on the surface to be cleaned, each of which processes about half of the surface to be cleaned from the center towards its edge,

Fig. 5

an arrangement corresponding to Figure 4, in which the cleaning devices in the feed direction of the to be cleaned Surface is directed obliquely towards the edge,

Fig. 6

a cleaning device whose cleaning strand is deflected parallel to itself in its course and thus acts on only about half of the surface to be cleaned, an analog cleaning device being provided for the underside of the plate to be cleaned.

Fig. 7

in a graphical representation, the arrangement according to Figure 6, showing that a second cleaning device is provided in the feed direction behind a first cleaning device with the cleaning strand deflected in opposite directions and the opposite direction of movement of this cleaning strand and in order to clean the second half of the plate as well

Fig. 8

a representation of a modified embodiment of a device corresponding approximately to FIG. 1, in which a liquid supply is arranged in the initial region of the cleaning run, with which cleaning agents can also be supplied.

In the various exemplary embodiments, matching parts or parts having the same function are provided with matching reference numbers even with different designs.

A device designated as a whole with 1 is used for mechanical cleaning of, in particular, grained, possibly black and correspondingly sensitive surfaces 2, for example on a plate 3. However, films or laminates, for example made of plastic, can also be processed and cleaned with a device 1.

What is essential in this device 1 is at least one cleaning device 7 which has an upper run 4 and a lower run 5 and at least two deflecting rollers or rollers 6 and which acts on the surface of the plate 3 with the one run as a cleaning run. In almost all of the exemplary embodiments, the lower run 5 is the cleaning run, so that in the following the cleaning run is also designated with "5".

Above all in FIG. 2, but also in FIG. 3, it is made clear that the cleaning device 7 essentially has an approximately band-shaped fleece 8 or is essentially formed by this fleece 8, which on its inner side facing the deflection rollers 6 on a conformable, tensile carrier tape 9 is attached. In the position of use, the fleece 8 is pressed against the surface 2 to be cleaned in the region of the cleaning strand 5 with an outside formed from a multiplicity of fibers which are at least partially entangled and matted together. The individual fibers can then pick up even the smallest particles even from depressions in a grained surface 2 and remove them in the feed direction of the cleaning strand 5.

The carrier tape 9 can be a plastic and / or textile tape, which is also welded, glued and / or sewn on the fleece.

It is favorable for wear and the lowest possible dust formation if the fibers of the fleece 8 consist of plastic, in particular of polyamide. On the one hand, such a fleece can take the smallest particles with it and absorb them, on the other hand it can also be cleaned well without the fibers being worn out too quickly. In addition, it can work well on a carrier tape are attached in order to be able to be moved as cleaning device 7 over deflection rollers 6.

In FIG. 2 it is also indicated that the carrier tape 9 can be elastic in the edge region of the fleece, in which an additional elastic tape 9a is fastened there, so that the entire cleaning device 7 or the elastic carrier tape 9 can also be placed under a tension. Particularly in the case of cambered or somewhat spherical deflection rollers 6, this results in a practically automatic centering of the cleaning belt 7. Thus, belt guides for the cleaning strand 5 can be dispensed with under certain circumstances.

In a manner not shown in detail, the carrier tape 9 can have ferromagnetic deposits or fibers and the cleaning strand 5 can be guided on a magnet which can be arranged between the upper strand 4 and the cleaning strand 5 and, especially with large spans or distances between the deflection rollers 6, sagging of the cleaning strand 5 prevented. If the cleaning strand 5 were to sag, a plate 3 to be cleaned could collide with the cleaning strand 5 on its first contact and damage it.

In FIG. 3, instead of a magnet, a suction guide 10 with a vacuum connection 11 is shown, which can hold the cleaning strand 5 when it is being fed and is also arranged between the two strands 4 and 5. In this case, this suction guide, like a guide magnet, can be adjustable in height in order to also be able to adjust the position of the cleaning run 5 in its respective height.

It can be seen from FIGS. 1 and 4 to 8 that the direction of movement of the cleaning run 5 according to the arrows indicated in each case transversely to the transport direction or feed direction of the surface 2 to be cleaned and to its longitudinal edges 12 is directed. Thus, the dwell time of absorbed particles in the area of the surface 2 to be cleaned is kept as short as possible.

According to FIGS. 1 and 8, in the area of a deflecting roller 6 outside the cleaning area, a device designated as 13 for removing the particles picked up during cleaning is indicated, but which is also provided in the other exemplary embodiments. It is provided in the exemplary embodiments according to FIGS. 1 and 8 that in the region of the deflecting roller 6, outside the cleaning region, a blowing and / or suction device serves as a device 13 for removing particles taken up from the fleece. One can see both in FIG. 1 and in FIG. 8 arrows that start from the fleece 8 and point into the device 13 in order to indicate that the particles from the fleece can be sucked into this device 13 and can then be conveyed further by this.

This device 13 can be combined with a blowing device (not shown in more detail) or possibly only consist of such a blowing device, which expediently has a rotary nozzle, so that an air flow does not always act only at one and the same point. Such a rotary nozzle could have an air outlet arranged eccentrically to its rotary bearing, which is additionally oriented obliquely to the axis of the rotary bearing and to the direction of rotation counter to the direction of rotation or an acute angle, so that the air inlet itself not only hits the fleece 8 with a cleaning effect and therein contained particles dissolves, but also causes the drive of the rotary nozzle itself. This works even better if at least two air outlets or outlet nozzles are each provided at a distance from the common axis of rotation and are arranged obliquely in the direction of rotation approximately in the same direction, as a result of which the number of air impulses which each hit one point of the fleece 8 is then doubled.

In Figure 3 it is indicated that parallel to the cleaning belt consisting essentially of a fleece 8, a belt-like and arranged brush 14 can be provided, which runs parallel to the cleaning belt formed from the fleece 8 and in the feed direction of the workpiece 3 to be cleaned before Fleece 8 is provided, the bristles 15 of the brush 14 being harder than the fibers of the fleece 8. With such a belt-shaped and rotating cleaning brush 14, coarse or adhering particles can thus be detached from the surface 2 and transported away. If one or the other particle is loosened from the brush 14 but not completely taken away, it is then gripped by the fleece 8 and thus removed from the surface 2 with certainty. FIG. 3 shows a further embodiment in that an antistatic brush 16, which is likewise designed as an endless belt, is arranged all around in the feed direction behind the fleece 8, again parallel to the fleece 8. Electrostatic charges caused by the friction between the cleaning device and the surface can thus be reduced again. The distance between the band-shaped cleaning brush 14 and the fleece 8 and the antistatic brush 16 is in each case smaller than the width of the fleece 8. Narrow channels 17 thus arise between these different cleaning devices. These channels can be used in the area of the cleaning fleece 8 to provide air flow 18 oriented in the direction of movement of the cleaning run 5 as a cross flow supporting the cleaning, this cross flow advantageously being able to be generated by a correspondingly high rotational speed of the fleece 8 or the brushes 14 and 16.

In the device according to FIG. 3, several cleaning effects are first of all provided by a brush 14, which remove or also loosen coarse particles from a surface can, furthermore by means of the fleece 8, which in particular also takes very fine particles from recesses, by an antistatic brush 16 and finally by a transverse air flow 18.

It should be mentioned that these measures and configurations explained with reference to FIG. 3 can also be provided in analog form in other exemplary embodiments, for example also in the embodiments according to FIGS. 4 to 8 to be described.

FIGS. 6 and 7 show an arrangement in which the circumferential fleece 8 and possibly also the circumferential brush 14 on the strand 5 facing the surface 2 to be cleaned has a deflection 19 parallel to itself and only that of the opposite strand 4 the part of the cleaning strand 5 which has the greater distance rests in the use position on the surface 2 to be cleaned and can be moved from the central region thereof to the edges 12. Thus, a particle 5 picked up at the beginning of the cleaning area of the cleaning strand 5 does not have to be transported over the entire surface 2, but only about half of it. In Figure 7 it can be seen that at least two similar cleaning devices 7, i.e. at least two nonwoven belts, are provided in parallel in the feed direction of the surface 2 to be cleaned, the deflected cleaning areas of which overlap one another in the middle zone of the surface 2 to be cleaned, as seen in the feed direction and are each driven in opposite directions to the two opposite longitudinal edges 12 of the surface 2 to be cleaned. One cleaning device 7 thus cleans one half and the other half of the surface 2.

It is indicated in Figures 6 and 7 that not only one, but also the opposite surface 2 of a plate 3 can be treated and cleaned with such cleaning devices 7.

A similar arrangement is provided in FIG. 4, in which in turn cleaning devices 7, in particular two non-woven tapes, are arranged one behind the other as seen in the feed direction and slightly overlap one another in a central region, each of the cleaning devices 7 approximately half of the surface 2 to be cleaned pressurized without showing a deflection. The two cleaning devices located one behind the other can engage together on a coaxial deflection roller 6, whereby this common deflection roller 6 then requires a separation point for different directions of rotation. This also makes it possible to only have to drag particles that have been picked up over only half of the surface 2 to be cleaned, which is particularly useful in the case of relatively wide plates 3.

In Figure 5, a further embodiment of this principle can be seen, which consists in that the cleaning tapes 8 and / or brushes 14, that is, the cleaning devices 7 are each arranged somewhat obliquely to the feed direction of the surface 2 to be cleaned in the sense that the feed speed and the inclination and the rotational speed of the cleaning runs 5 lead to a relative movement directed at the surface 2 to be cleaned approximately at right angles to the respective edge 12 thereof. In this way, the shortest path for the removal of a picked-up particle results despite the respective superimposed movements.

It should also be mentioned that in order to deflect the cleaning strand 5 in the embodiment according to FIGS. 6 and 7, a support 9 of the fleece 8 and / or the bristles 15 comprising Not shown guide profile, preferably an extruded profile can be provided, which is arranged between the deflection rollers 6. This guide profile can in particular be adjustable with respect to its deflection area in the feed direction of the cleaning run 5 or in the opposite direction if the deflection 19 is to be adjusted, for example, to adapt to different widths of plates 3 or to change the overlap areas of the cleaning devices 7 arranged one behind the other.

FIG. 8 shows a device 1 which, including a device 13 for removing the particles picked up during cleaning, essentially corresponds to that according to FIG. 1. However, while the embodiments according to FIGS. 1 to 7 can carry out a dry mechanical cleaning, in this embodiment a liquid supply 20 in the form of a spray tube is provided at the beginning of the cleaning strand 5 of the fleece 8 and / or a possible brush 14, which is used to wet the cleaning strand 5 and thus also the surface 2 to be cleaned. Instead of or in addition, it would be conceivable to supply a liquid in the feed direction in front of the respective cleaning strand 5 in order to wet the surface directly and thereby also indirectly wet the cleaning strand 5. However, if this is itself directly moistened in the manner shown in FIG. 8, it can carry out a correspondingly moist cleaning of the surface 2, the liquid added being water or a cleaning agent or a mixture, depending on the cleaning requirement.

In this case, it is expedient if a suction device for liquid is arranged at the end of the cleaning run 5 or the deflection roller 6 provided there, which corresponds to the device 13 already described. In this exemplary embodiment, the device 13 is a suction device for liquid, which then also means that of the liquid captured particles are removed from the fleece 8 or a brush 14.

In all of the exemplary embodiments, the fleece 8 plays an important role in order to be able to remove even grained or irregular surfaces 2 and particles located there in depressions with great certainty, so that both dry and possibly moist cleaning of such sensitive ones can be carried out Surfaces is possible.

The device 1 for the mechanical dry and / or wet cleaning of - in particular grained or somewhat irregular, but also smooth - surfaces 2, in particular on plates 3, foils or laminates, for example made of plastic, has at least one cleaning device 7 which has an upper strand 4 and a Has upper run 5 and at least two deflecting rollers or rollers 6, the one run acting as a cleaning run 5 on the surface 2 to be cleaned and wiped over this surface due to the circulation. The cleaning device 7 is a somewhat band-shaped fleece 8, which is fastened on its inner side facing the deflecting rollers 6 to a supple, tension-resistant carrier tape 9 and on its outer side facing the surface to be cleaned has a multitude of at least partially entangled and matted fibers, which Capture even the smallest particles from wells and take them with you. Thus, a very quick, because of the simplicity of the device 1 rational and yet thorough cleaning of sensitive surfaces is possible, which is required for example in the furniture industry.

Claims (23)

Device (1) for the mechanical cleaning of - in particular grained - surfaces (2), in particular on plates (3), foils or laminates, for example made of plastic, with an upper strand (4) and a lower strand (5) and at least two deflection rollers or Rollers (6) having a cleaning device (7) which acts on the surface (2) to be cleaned with the one run as a cleaning run (5), characterized in that the cleaning device (7) is an approximately band-shaped fleece (8) which is attached to its inner side facing the deflecting rollers or rollers (6) is fastened to a supple, tension-resistant carrier tape (9), and that it has an outer side formed from a plurality of at least partially entangled and matted fibers with its cleaning strand (5) is pressed onto the surface to be cleaned (2). Device according to claim 1, characterized in that the carrier tape (9) is a plastic and / or textile tape onto which the fleece (8) is welded, glued and / or sewn. Device according to claim 1 or 2, characterized in that the carrier tape (9) has ferromagnetic inserts or fibers and the cleaning strand (5) is guided on a magnet. Device according to one of claims 1 to 3, characterized in that the carrier tape (9) is elastic at least in the edge region and the deflecting rollers (6) are preferably cambered or crowned. Device according to one of claims 1 to 4, characterized in that the fibers of the fleece (8) consist of plastic, in particular of polyamide. Device according to one of claims 1 to 5, characterized in that the direction of movement of the cleaning strand (5) is directed transversely to the transport direction of the surface (2) to be cleaned towards its longitudinal edges (12). Device according to one of claims 1 to 6, characterized in that a device (13) for removing the particles picked up during cleaning is arranged in the area of at least one deflecting roller (6) outside the cleaning area. Apparatus according to claim 7, characterized in that in the region of the deflecting roller (6) outside the cleaning region, a blowing and / or suction device is provided as a device (13) for removing picked up particles from the fleece. Device according to one of claims 1 to 8, characterized in that a rotary nozzle is provided as a blowing device for removing particles taken from the fleece, which has at least one air outlet arranged eccentrically to its rotary bearing, which is additionally at an acute angle to the direction of rotation opposite to the direction of rotation Direction of rotation and oriented to the axis of the pivot bearing. Apparatus according to claim 9, characterized in that at least two air outlets or outlet nozzles are each provided at a distance from the common axis of rotation and in Direction of rotation are arranged obliquely in the same direction. Device in particular according to one of Claims 1 to 10, characterized in that a brush (14) constructed and arranged in a belt-like manner is provided parallel to the cleaning belt consisting of a fleece (8), and in that the brush rotating in parallel with the fleece in the feed direction of the one to be cleaned Workpiece (3) is provided in front of the fleece (8), the bristles (15) of the brush (14) being harder than the fibers of the fleece (8). Device according to one of claims 1 to 11, characterized in that the circumferential fleece (8) and / or the circumferential brush (14) has a deflection (19) parallel to itself on the strand (5) facing the surface (2) to be cleaned itself and only that part of this cleaning run (5) which is at a greater distance from the opposite run (4) lies against the surface (2) to be cleaned in the position of use and can be moved from the central region thereof to the edges (12). Device according to one of claims 1 to 12, characterized in that at least two identical cleaning devices (7), at least two fleece belts, are provided in parallel in the feed direction of the surface (2) to be cleaned, the cleaning regions of which are deflected in particular in the middle Zone of the surface to be cleaned (2) seen in the feed direction overlap somewhat one behind the other and are each driven in opposite directions to the two opposite longitudinal edges (12) of the surface to be cleaned (2). Device according to one of claims 1 to 13, characterized in that the cleaning belts (8) and / or brushes (14) are each arranged somewhat obliquely to the feed direction of the surface (2) to be cleaned in the sense that the feed speed and the inclination and the rotational speed of the cleaning strands (5) lead to a relative movement directed at the surface (2) to be cleaned, approximately at right angles to its edge (12). Device according to one of claims 1 to 14, characterized in that a guide profile, preferably an extruded profile, is provided for deflecting the cleaning strand (5), which comprises the carrier (9) of the fleece (8) and / or the bristles (15) is arranged between the deflection rollers. Device according to one of claims 1 to 15, characterized in that the guide profile and in particular its deflection area in the feed direction of the cleaning strand (5) or opposite to it is adjustable. Device according to one of the preceding claims, characterized in that at least one antistatic brush (16), in particular parallel to the fleece (8), is also arranged in the feed direction behind the fleece (8) and is likewise designed as an endless belt. Device according to one of claims 1 to 17, characterized in that the distance between the band-shaped cleaning brush (14) and the fleece (8) and / or the antistatic brush (16) is less than the width of the fleece. Device according to one of claims 1 to 18, characterized in that in the area of the cleaning fleece (8) an air flow (18) oriented in the direction of movement of the cleaning run (5) is provided as a cross flow which supports cleaning. Apparatus according to claim 19, characterized in that the cross flow in the area of the fleece (8) and / or the brushes (14, 16) is generated by their rotational speed. Device according to one of claims 1 to 20, characterized in that the cleaning strand (5) is held on a suction guide (10) arranged between the two strands (4, 5) during its advancement. Device according to one of claims 1 to 21, characterized in that at the beginning of the cleaning strand (5) of the fleece (8) and / or the brush (14) and / or in the feed direction in front of the cleaning strand (5) a liquid supply (20) for Wetting the surface to be cleaned (2) and / or the cleaning strand (5) is provided. Device according to one of claims 1 to 22, characterized in that a suction device for liquid is provided at the end of the cleaning run (5) or in the region of the deflecting roller provided there as a device (13) for removing picked up particles.

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