Roller for measuring flatness

FIELD: physics.

SUBSTANCE: roller for measuring flatness defects of a strip has force transducers built into the lateral surface of the roller with formation of measurement sections and coatings for the force transducers which are flush with the surface of the roller. The coatings are surrounded by a gap for movement with formation of a clearance from the force transducers. The measurement sections are closed by one or more metal films adhesively connected to the surface of the roller. Also the measurement roller has an additional shell.

EFFECT: increased strength and wear-resistance of the measurement roller, prevention of shear deformation in coatings which form measurement sections of the roller.

9 cl, 8 dwg

 

The invention relates to a roller for measuring flatness to determine defects in the flatness of strips, in particular steel and metal bands, with the passage of lines for the production of strips or rolling mills, containing embedded in the side surface of the roller torque sensors with the formation of the measuring stations located flush with the surface of the roller cover for a torque sensor, and cover surrounded with clearance for movement with the formation of the gap relative to the torque sensor.

Known these videos for measuring flatness, in which a torque sensors are located in the radial direction to the axis of the measuring roller with the formation of separate metering stations, namely the formation of free annular gap for movement between the outer surface of the coating and the inner surface of the recess in the side surface of the roller, in which they are placed (EP 0595072 A1). The annular clearance for movement may be closed by a ring or layer of plastic to prevent penetration of dirt particles, which are often covered with a strip on its surface. These dirt particles can represent, for example, the products of abrasion strips, and in the case of galvanized bands - particles of zinc, etc. However, su is basically the danger that dirt particles penetrate into the gap for movement during rotation of the roller will cause unwanted mark on the strip surface. To avoid damage to the strip surface is known that the measuring roller and, therefore, its measurement sites supply shell. When this sheath may consist of multiple tubular segments or be on the carrier pipe. In the latter case we are talking about termokapillyarnoi shell, if the shell consists of wear metals (DE 29824236 U1). It is also known rubber or plastic coating, such as polyurethane, rollers for measuring flatness in order to avoid clogging with dirt particles clearances for traffic coatings torque sensors. The choice of a suitable coating or a suitable membrane depends on destination. If, for example, aluminum strips and strips of stainless steel usually use a rubber or plastic coating, especially to protect the surface of the band. The carbon strips, in contrast, are often hard coatings, and electrolytic galvanized strips, preferably with a plastic coating. If the shell directly on the roller for measuring flatness put the hard coating of wear metals, there is a danger that in the area lying on the this shell clearances for movement of solid floor will be prone to cracking due proof coatings torque sensors since the radial spinimana in 1-2 microns due to the measured force at the gap, for example, 20 μm, mean shear deformation in 5-10%. Such a shear deformation of a solid floor for a long time can not perceive. If the roller for measuring flatness surround the carrier pipe and put a solid floor as the shell, it, however, you can avoid unacceptable deformations, but then the side of the power circuit through the carrier pipe interferes that has a negative influence on the measuring signals. Here the support is provided by the invention.

The basis of the invention lies in the task of creating a roller for measuring flatness in the above described form of execution, which itself is directly deposited hard coating without carrier pipe differs extremely high creep strength and therefore a long service life.

This problem is solved in the roller for measuring flatness due to the fact that the measuring sections are closed one or more adhesively United with the surface of the roller metal films. These measures of the invention have the effect that applied directly to the measuring roller shell or coating, anyway, whether hard or soft cover, long exposed to violate the shear strain in the surrounding area coverage is innometrics sensors clearance for movement. Even when the radial spinimana cover such shear deformation is prevented by the closing of the measuring areas of the metal films. Otherwise than the carrier pipe, such membranebased metal films does not occur violates side of the power circuit, so that the measuring signals are almost no experience changes. This applies not only to the annular measuring sections with radially oriented to the main axis of the roller with a torque sensors on ER 0595072 A1, but also to the case when measuring the areas formed by the measuring beams on two supports, and, on the one hand, the measuring beam is surrounded with clearance for movement, and, on the other hand, a support formed with a torque sensors, not oriented radially to the main axis of the roller (DE 10224938 A1).

Other significant for the invention of the measures below. So, each measuring site can be closed with a metal film. There is also the possibility to close together multiple plots measuring one metal film. So, for example, a metal film for closing one or more measurement areas can be in the form of a film strip across the entire width of the measuring roller.

Further, according to the invention the measuring tape consists of a spring article is Lee. Thickness measuring tapes can be 10-100 µm, mostly 50 μm. Metal film or films can be bonded with the metal surface. There is also the possibility of welding of metallic films or films with the surface of the roller.

In the framework of the invention the roller for measuring flatness may be known by itself to contain the shell not only of solid metal, such as hard chromium or tungsten carbide, but also of rubber or plastic, for example polyurethane.

Below the invention is explained in more detail using depicting only one example of execution of the drawing, which are:

figure 1 - schematic, top view of the roller for measuring flatness without sheath;

figure 2 is a radial section of the roller of figure 1 in the zone of the torque sensor;

figure 3 - section a-a clip of figure 1 along the length of the measuring beam;

4 is a modified form of the clip of figure 1;

5 is another modified form of the clip of figure 1;

6 is a roller of figure 1 with the shell of solid metal;

Fig.7 - section In In in the area of the measuring beams in Fig.6;

Fig - radial section of the measuring beam by 6 in the zone of the torque sensor.

The drawings depicted the roller 1 for measuring flatness to determine defects in the flatness of strips 2, and the hour of the particular steel and metal bands passing through the production line strip or rolling mills. This video 1 contains embedded or recessed in the side surface 4 of the roller torque sensor 5 with the formation of the measuring sections 3 and located flush with the surface of the roller cover 6A,6b for these torque sensor 5, and the cover 6A,6b surrounded by a gap 7 for movement with the formation of the gap relative to the torque sensor 5. This gap 7 for movement can be filled microelasticity synthetic adhesive 8 for sealing roller, so that, for example, in raw mode such roller 1 in the area of the torque sensor 5 no moisture can penetrate. Further, the gaps 7 for movement can be additionally sealed around the ring 8 and the circular cross-section.

The form of figures 1 to 4 and 6-8 as coatings obliquely to the main axis of the roller 9 is inserted measuring beams 6A, which may be the same in the direction of movement of the strip and the surface of which has the curvature of the roller surface. These measuring beams 6A supported on both sides of the torque sensor 5 (two beams), and a torque sensor 5 and the fixing screws 10 are not radial to the main axis 9 of the roller direction, and is displaced transversely to the main axis of the roller. Measuring stations 3 are closed by one or a few is Kimi adhesively connected to the roller surface of the metal film 11. The form of execution in figure 1, each sensor section 3 is covered with a metal film 11. The form of execution in figure 4 several measuring sections 3 are closed together, a metal film 11, namely by passing across the measuring sections of the film strip.

The metal film 11 composed of spring steel. The thickness of the metal film is 10-100 μm, mostly 50 μm. The metal film 11 or the film can be glued or welded to the surface of the roller. In the exemplary embodiment roller 1 includes a shell 12 made of hard metal, such as hard chromium or tungsten carbide.

The form of execution in figure 5 is implemented by a separate measurement sites 3, in which the torque sensor 5 is oriented in the radial direction to the main axis of the roller 9 with the formation of the annular gap 7 for the movement of their coatings 6b. Also in this case, each measuring section 3 can be closed metal film 11 or more measuring stations 3 can be closed together one metal film.

In the above described form of the distribution of the load over the width of the roller when the loading strip occurs as a reaction of the distribution of tensile stresses across the width. This explain the marked contact surface 12 between polosi and measuring beams 6A, moving across the width of the roller by the movement of the strip. Position width changes when the roller 1 rotates. Thus there is a continuous measurement of the width of the roller.

1. The roller for measuring flatness to determine defects in the flatness of strips, in particular steel and metal bands, in passing, in particular, the production lines of the strip or rolling mills, containing embedded in the side surface of the roller torque sensors with the formation of the measuring stations located flush with the surface of the roller cover for a torque sensor, and cover surrounded with clearance for movement with the formation of the gap relative to the torque sensor, wherein the measuring sections are closed one or more adhesively United with the surface of the roller metal films, and the measuring roller has advanced shell.

2. The roller according to claim 1, characterized in that each measuring section (3) separately closed one metal film (11) or more measurement areas (3) together closed one metal foil (11).

3. The roller according to claim 1 or 2, characterized in that the metal film (11) for closing one or more measurement areas (3) takes the form of a film strip across the width measure is inogo roller.

4. The roller according to claim 1, characterized in that the measuring tape (11) is made of spring steel.

5. The roller according to claim 4, characterized in that the thickness measurement film (11) is 10-100 μm, mostly 50 microns.

6. The roller according to claim 1 or 2, characterized in that the metal film or foil (11) glued to the surface of the roller.

7. The roller according to claim 1 or 2, characterized in that the metal film or foil (11) is welded with the surface of the roller.

8. The roller according to claim 1 or 2, characterized in that the measuring roller (1) includes a shell (12) of rubber or plastic, for example polyurethane.

9. The roller according to claim 1 or 2, characterized in that the measuring roller (1) includes a shell (12) made of hard metal, such as hard chromium or tungsten carbide.



 

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