WO2011098284A2

WO2011098284A2 - Method and device for applying a surface layer to a roller and use of said method and device

Info

Publication number: WO2011098284A2
Application number: PCT/EP2011/000647
Authority: WO
Inventors: Søren TOFT SØRENSEN
Original assignee: Beva Specialsvejs Aps
Priority date: 2010-02-15
Filing date: 2011-02-11
Publication date: 2011-08-18
Also published as: DE102010001940A1; WO2011098284A3

Abstract

According to the invention, to produce a roller (1) with an applied surface coating (4), a liquid surface material is supplied to the roller during rotation (8) of the latter and said material is distributed with the desired material thickness with the aid of a peripheral body (5) running alongside the roller at a distance (6) to the latter, thus permitting a roller with a surface coating to be produced in a single work operation, as a uniform, completely smooth surface requiring no post-processing, such as grinding, is achieved. Production is thus simplified and material savings can be made. The application is economical as there is no need for post-processing and there are also no adverse effects on the environment or problems caused by dust.

Description

METHOD AND DEVICE FOR APPLYING A SURFACE LAYER ON A ROLLER AND ITS APPLICATION

State of the art

The invention relates to a method for applying a surface layer to a roller, to an apparatus for carrying out the method and to the use thereof. Innernalb the part of the industry in which the application of web-like material, such. Within the paper industry and the plastics industry, or the application of such web-like materials for printing, laminating and the like, a rotary roller mill is used.

These rolls can either form and steer the web material, or they can do so as a backing, anvil during printing or other form of processing. For this purpose, it is crucial that the rollers are dimensionally stable without damage or wear on the surface.

The rolls usually consist of a metal core whose surface is treated so that the roll is dimensionally stable and the surface is smooth.

If the roller is worn or if the surface is damaged, the surface can be restored by applying a surface layer. Of course, such a surface layer can also be applied to new rolls. This surface layer can be applied either by spraying liquid material such as a chemically polymeric composite or similar curable non-abrasive material, or the surface layer can be constructed by applying a so-called electro-slag welding method.

In both cases, a material layer thicker than the finished roll diameter is to be applied, which further material layer may be applied by machining such as e.g. by grinding, to reduce to the desired roll dimension.

In practice, this means that a layer is applied whose thickness can be up to twice the finished layer, which in part results in an increased material consumption, in part a complex and laborious finishing, with a view to designing a very smooth and dimensionally stable roller.

A particular disadvantage is that the post-processing as mentioned by grinding, as this developed a lot of dust with the resulting inconvenience and the arbeitsumgebungsmäβigen reasons for air purification u.a.m. claims.

The object of the invention The object of the invention is to remedy these deficiencies and disadvantages simultaneously with the fact that the production costs are reduced, and this is achieved according to the invention by a method in which the roller is made to rotate about its central axis, wherein surfaces material is fed in liquid form to the roll, wherein the surface material is distributed to the roll by a peripheral body arranged along one side of the roll and parallel to the center line is, and wherein the distance of this edge body is set to the surface of the roller to form the desired layer thickness of the surface material. In this surprisingly simple manner, a uniform and very smooth surface layer can be applied to the entire roll in one operation, which surface layer to form a gleichmäβigen and smooth surface with exactly the desired dimensions exactly the desired layer thickness. The application is carried out in one operation, wherein the surface layer is supplied in liquid form to the roller during its rotation, which will adhere and level liquid material to the surface, and uniformly by a peripheral body set to form a restriction and a smoothing of the material on the roller will be distributed to this. Thus, after application, a roller will be presented which has a dimensionally stable, smooth and uniform surface, and thus a roller that is ready for use.

This provides the significant advantage that no reworking of the surface is needed, as the strength of the surface layer can be maximized because the surface remains undamaged. Added to this is the material savings achieved by this method, which incidentally no significant environmental impact and thus no need for air cleaning u.a.m. entails.

By discontinuing the supply of material and removing the skirt as the roll is being rolled, the material will gradually become rigid in the course of curing so that the material is leveled and smoothed during rotation while The material is plastic, resulting in a completely uniform and smooth surface after curing. Characterized in that, as described in claim 3, that the peripheral body can be tilted such that its bottom can obliquely upwards and downwards, the material supply can be regulated to and from the roller and thereby break off without the creation of an unwanted edge or rib on the roller.

By the use of a device with material metering and a peripheral body in the form of the outside of the roller along extending, to the roller in an adjustable distance channel, as described in claim 4, a corresponding dimensioning of the material thickness is ensured on the roller.

By the formation of the bottom of the edge body as inclined towards the side edge down to the roller as described in claim 5, the groove will act as an accumulation chamber for the material during its distribution on the roller during application.

By adjusting the skirt such that its bottom slopes downwardly from the side edge as described in claim 6, the web can be reduced to a minimum while the body is guided away from the roll upon cessation of the supply of material.

Finally, as described in claims 7, 8 and 9, it is expedient to use the method and the apparatus for producing rolls of different shapes, which may differ from the usual rotary cylinder rolls, as it is also possible by profiled side edges, roll forming manufacture.

The drawing

An exemplary embodiment of the method and the device as well as their application according to the invention will be described in more detail below with reference to the drawing. Showing:

Figure 1 seen from above an example of an apparatus when applying a surface material to a cylindrical rotary roller,

Figure 2 shows a section of the device and the roller in the direction II-II in

Figure 1 seen

FIG. 3 shows an example of a conical roller,

FIG. 4 shows an example of a convex-shaped roll, FIG. 5 shows an example of a concave-shaped roll, and FIG

FIG. 6 shows an example of a partial surface coating of a

Roller. Description of the embodiments

In the following the invention will be described, partly in the form of a description of the device for carrying out the method, partly the method itself and its application.

The embodiment is shown for use in the manufacture of a rotary cylinder 1, as shown in FIGS. 1 and 2.

The roll 1 may comprise a metal core, which usually laterally has journals 2, which journals cooperate with the equipment for which they are to be applied, so that the roll can be brought to rotate about these journals.

The axis of rotation extends in the center line of the roller and the bearing pin as shown.

For this roll 1 a mass is to be applied, which may be a liquid polymeric composite which will cure after a reasonable time. This liquid mass 4 is shown in Figure 2, wherein it is stored and supplied by a one of the top of the roller 1 along and extending in its full length channel 3 system. By means of valves, not shown, or similar adjustable openings in the channel, the material 4 can be passed in a suitable amount on the roller 1, as indicated in Figure 2, so that the mass is evenly distributed on the top of the roller.

When the roller is made to rotate, as indicated by the arrow 8 in Figure 2, the mass will, after discharge from the channel, attach or stick to the top of the roller and thus spread throughout the surface of the roller during rotation.

To ensure a uniform distribution of the mass is arranged on the side of the device parallel to and in the same horizontal plane or slightly above this level, a scraper 5 in the form of a groove, which is open against the roller 1, as shown in Figure 2, wherein it forms a gap 6 together with the roller.

This scraper body is adjustable at a distance from the roller so that the gap 6 between the outside of the roller and the side edge of the scraper body can be designed. Furthermore, the scraper body 5 is tiltable such that its bottom can either run obliquely upward, as shown in Figure 2, or obliquely down when the application of material is to cease. In this simple manner, during the rotation of the roll, a uniform coating 4 will be formed on the surface of the roll, with the material - in excess of material - accumulating in the gutter 5, from which it will spread to locations on the roll may lack material.

The advantage of rotating the roller during application is to ensure a very uniform and even material distribution, and the material will have a thickness corresponding to the distance 6 between the roller and the groove.

Upon reaching this layer of material, the scraper body 5 may be partly tilted such that the "web" for the roll is reduced to a minimum, partly led away from the roll, which will continue its rotation, and the material thereby becomes an adequate dimensional stability, depending according to material thickness, as well as achieve a very smooth surface.

When the cure has progressed such that the material is dimensionally stable, the roll can be removed from the apparatus and a new roll can be stretched for material application.

The simple structure and the simple function of the device ensures that a surface layer can be applied with such precision that reworking in the form of loops is not required. The device can thus in a previously unknown fast manner with a low material consumption and without a significant amount of work in the Apply even layers on rollers.

This device also makes it possible to produce other forms of rolls than the rotary cylinder roll shown in FIGS. 1 and 2.

By adapting the shape of the peripheral body 5, other roller shapes can be produced in a corresponding manner, as shown for example in FIGS. 3 to 6. FIG. 3 shows a conical roller 9 with a surface coating 4, a convexly shaped roller 10 in FIG. 4, a concave-shaped roller 11 in FIG. 5, and FIG. 6 shows an example of a roller in which a surface layer 4 is present the middle section 12 is applied.

These are only examples of different roller shapes. However, peripheral body with projections and recesses for shaping of profile rolls and the like can also be designed, which may be possible by applying the method with the same advantages as described above.

Claims

Method for applying a surface layer to a roller, characterized in that the roller (1) is brought to rotate (8) about its center axis, that surface material (4) is supplied in liquid form to the roller, that the surface material (4) by one of the one side of the roller (1) along and the center line parallelJ arranged edge body (5) on the roller (1) is distributed, and that the distance (6) of this edge body (5) to the surface of the roller (1) for forming the desired layer thickness of the surface material (4) is set.

2. Method according to claim 1, characterized in that the supply of the surface material (4) upon reaching the desired layer thickness of the material (4) is stopped, and that the edge body (5) from the surface of the roller (1) is removed , and that the rotation of the roller (1) is continued until the material (4) has become adequately dimensionally stable.

3. Process according to claims 1 and 2, characterized in that the edge body (5) is tilted such that its bottom during the material supply (4) can extend obliquely upwards to the side edge and obliquely downwards, when the supply (4) is stopped.

4. A device for carrying out the method according to claims 1 to 3, comprising means for rotating and rotating the roller (1), characterized in that above the roller (1) a material supply (3) with means for metering the material (4 ) is arranged on the roller (1), and that in a plane parallel to the central axis or slightly above the central axis plane, an edge body (5) is arranged in the form of a groove, the roller (1) facing side is open, and their Side edge in one of the desired material thickness (4) corresponding distance (6) to the surface of the roller (1) is adjustable.

5. Device according to claim 4, characterized in that the bottom of the Randköpers (5) verlaüft during application of the surface material (4) obliquely down to the side edge.

6. Device according to claim 5, characterized in that the bottom of the peripheral body (5) is tiltable such that it runs obliquely downwards from the side edge when stopping the application of the material (4).

7. Application of the method negotiated in claims 1 to 3 and the device negotiated in claims 4 and 5, characterized in that the method and the device for surface coating of rolls in the form of either a rotary cylindrical roller (1), a conical rotary roller ( 9), a convex rotary roller (10) or a conical kaven rotary roller (11) can be applied.

8. Application according to claim 7, characterized in that the method and the device can apply the surface material (4) to the entire roll or to a section (12) of the roll.

9. Application according to claims 7 and 8, characterized in that the material (4) by applying a profiled side edge having edge body (5) is applied to form a profile roller.