Measuring roll for determining properties of a strip material guided on the measuring roll

Abstract

The invention relates to a measuring roll (1) for determining properties of a strip-shaped material, in particular a metal strip, guided on the measuring roll (2), wherein the measuring roll (3) comprises a measuring roll body (4) having a surrounding surface (6) extending along a rotation axis (R), wherein the measuring roll (2) comprises at least one recess (8), wherein the at least one recess (8) extends from the surrounding surface (6) to an interior of the measuring roll body (4), wherein the measuring roll (2) comprises at least one carrier (10), wherein the at least one carrier (10) is arranged in the at least one recess (8), wherein the at least one carrier (10) comprises at least one measuring zone (12), wherein the at least one measuring zone (12) is arranged on at least one force sensor (14), wherein the at least one carrier (10) comprises at least one material weakening zone (16), wherein the at least one measuring zone (12) is at least partially delimited by the at least one material weakening zone (16).

Description

Technical Field

[0001] The present invention relates to a measuring roller for determining the properties of a strip material (particularly a metal strip) guided on a measuring roller. Background Technology

[0002] Measuring rolls are used to determine the properties of strip materials (especially metal strips) guided on measuring rolls, and are used to detect straightness defects in strip materials during cold rolling and hot rolling of metal strips.

[0003] For this purpose, the measuring roller includes a measuring roller body extending along a rotation axis and having a peripheral surface, wherein the measuring roller includes at least one recess. The at least one recess extends from the peripheral surface into the interior of the measuring roller body, and the measuring roller also includes at least one measuring area disposed on at least one force sensor.

[0004] When measuring flatness, the strip material is guided onto at least one measurement area at a certain wrap angle during the rolling process. The strip tension distribution and related strip defects such as undulation can be determined based on the contact force measured using at least one force sensor.

[0005] To achieve the most accurate measurements possible using a force sensor, any force diversion between the measuring roller body and at least one measuring zone should be minimized.

[0006] Therefore, as is known in the prior art, at least one measuring area is separated from the measuring roller body by a circumferential gap. This prevents the force transmission from the measuring roller body to the measuring area from affecting the measurement.

[0007] Although the circumferential gap prevents force diversion, foreign matter such as oil, grease, and / or metal shavings from the strip material can enter the circumferential gap during the rolling process. This can impair the function of at least one measuring area and at least one force sensor, thus distorting the measurement results. Furthermore, the circumferential gap leaves marks on the strip material, thereby reducing its quality.

[0008] To prevent foreign objects from entering, at least one measuring area, particularly the measuring roller body, is covered. This can be achieved by covering or sealing the circumferential gap with O-rings, plastic coatings, caps, or welded layers. This reduces the entry of foreign objects into the circumferential gap. However, covering or sealing the circumferential gap again creates force diversion, and indentations will still remain on the strip material due to the circumferential gap.

[0009] In view of this prior art, the object of the present invention is to provide a reliable measuring roller that can be used for accurate measurement while minimizing indentation and force diversion. Summary of the Invention

[0010] According to a first aspect, the aforementioned objective is achieved by a measuring roller of the present invention for determining the properties of a strip of material (particularly a metal strip) guided on the measuring roller. The measuring roller comprises a measuring roller body extending along a rotation axis and having a peripheral surface, wherein the measuring roller includes at least one recess extending from the peripheral surface into the interior of the measuring roller body, wherein the measuring roller includes at least one carrier disposed in at least one recess, wherein the at least one carrier includes at least one measuring region disposed on at least one force sensor, wherein the at least one carrier includes at least one material weakening region, wherein the at least one measuring region is at least partially defined by the material weakening region.

[0011] In this way, a measuring roller capable of measuring with exceptional reliability and accuracy can be provided. Furthermore, the at least one measuring area is not surrounded by a circumferential gap, thereby preventing indentations on the strip material. Additionally, force diversion is minimized.

[0012] The defined characteristics may specifically be the flatness and / or the edge of the strip material.

[0013] The measuring roller includes a measuring roller body. In a preferred embodiment, the measuring roller body may be a solid roller capable of extending along the axis of rotation. The solid roller can be understood as the measuring roller body, which may be made as a single piece, its shape produced by a primary forming process (e.g., casting), and / or its geometry produced from a single semi-finished product by a separation process (particularly by machining), particularly by turning, drilling, milling, or grinding. Alternatively or additionally, the solid roller may also be produced wholly or partially (particularly multi-layered) by applying layers, as specifically described in WO 2020 / 174001 A1.

[0014] In a preferred embodiment, in the measuring roller body designed as a solid roller, the measuring roller shaft pin arranged at the front end of the measuring roller can also be part of an integral body for rotatably mounting the measuring roller, for example, by mounting it in a ball bearing. However, it is also conceivable that DE 20 2014 006 820 U1 Figure 2 The design shown allows for a main portion of the measuring roller body to be designed as a cylindrical solid roller, which may have a cover arranged on the front side, with the measuring roller pin designed on the cover. Furthermore, the measuring roller body may be designed as, for example, DE 20 2014 006 820 U1. Figure 3 The measuring roller body shown may be designed with molded pins, and a sleeve may be pushed onto the measuring roller body. However, in a particularly preferred embodiment, the measuring roller may be designed as a solid roller without a sleeve.

[0015] The surrounding surface of the measuring roller body can be the outer surface of the measuring roller body. The surrounding surface can be the surface of the measuring roller body that comes into contact with the strip material during the measurement process.

[0016] The at least one recess can be used to remove material from the measuring roller body. The at least one recess extends from the surrounding surface into the interior of the measuring roller body. Therefore, the at least one recess can extend from the surrounding surface toward the central axis. Preferably, the recess can begin from the surrounding surface and end in front of the central axis. The recess can extend in both the circumferential direction and the direction of rotation axis.

[0017] The at least one support body can be a support structure. The at least one support body can support the at least one measuring area. Specifically, the at least one measuring area can be completely surrounded by the at least one support body. This prevents any direct force transmission from the measuring roller body to the at least one measuring area. Instead, any force transmission must be from the measuring roller body via the at least one support body to the at least one measuring area. This further reduces force diversion.

[0018] The at least one measuring area may be a region within the measuring roller body where force measurement or flatness measurement can be performed. The at least one measuring area may be the only region on the carrier that can move radially. Therefore, force transmission during flatness measurement can only occur within the measuring area. The at least one measuring area may have different shapes. The at least one measuring area may be circular, rhomboid, U-shaped, square, triangular, or any other shape. The shape of the at least one measuring area may specifically be the boundary of at least one material region caused by at least one material weakening portion. Therefore, the at least one material weakening portion may be arranged in a circular, rhomboid, U-shaped, quadrilateral, triangular, or other shape around the at least one measuring area.

[0019] The at least one force sensor can be designed to measure the force acting on the at least one measurement area. Specifically, the at least one force sensor can measure the force acting on the at least one measurement area by radial movement of the at least one measurement area. The at least one force sensor can be arranged at the center or edge of the at least one measurement area. If the at least one force sensor is arranged at the center of the at least one measurement area, then the sensor can be equidistant from all boundaries of the measurement area. For example, the at least one force sensor can be equidistant from several material weakening portions. If the at least one force sensor is arranged at the edge of the at least one measurement area, then the sensor can be closer to the boundary of the measurement area. For example, the at least one force sensor can be arranged closer to one of several material weakening portions. In particular, the at least one measurement area can be arranged on at least two, three, or four force sensors.

[0020] The at least one material weakened portion may have a lower strength than the at least one measuring region. The material weakened portion can significantly reduce force diversion between the at least one measuring region and the measuring roller body. The at least one material weakened portion may, in particular, have a different strength, different thickness, different alloy, and / or different microstructure than the at least one measuring region. For example, the thickness of the at least one material weakened portion may be smaller than the thickness of the at least one measuring region. In this way, the at least one material weakened portion can be formed particularly easily. The at least one material weakened portion can be introduced into the interior of at least one carrier. The interior of the at least one carrier is the side of the carrier facing the axis of rotation.

[0021] The at least one measurement region is defined at least partially by the at least one material weakening portion. Therefore, the at least one measurement region can be completely or only partially separated from the support. For example, the at least one measurement region can be completely defined by only one circular material weakening portion. The at least one measurement region, for example, can be defined by only one semi-circular material weakening portion. The at least one measurement region, for example, can be partially defined by three material weakening portions, wherein the three material weakening portions can be arranged in a U-shape. For example, the at least one measurement region can be completely defined by four material weakening portions, wherein the material weakening portions can form a rhombus shape.

[0022] According to the first embodiment, the at least one material weakening portion can be produced by milling, drilling and / or molding, and / or wherein the at least one of the material weakening portions can be produced during the 3D printing process.

[0023] In this way, material weakening portions can be produced particularly easily and reliably. The at least one material weakening portion can have a smaller thickness than the at least one carrier and / or at least one measuring region. Milling, drilling, and / or die-casting provide the advantage that the at least one carrier, at least one measuring region, and at least one material weakening portion can be made of solid material, thus allowing for uniform material properties. During 3D printing, the at least one material weakening portion can be produced as a special filament structure, and the material properties can be varied by process parameters. Therefore, the properties of the measuring roller can be varied more drastically.

[0024] According to another embodiment, the at least one material weakening portion may be at least partially tilted relative to the surrounding direction and / or the axis of rotation.

[0025] If the at least one weakened portion of the material can be at least partially tilted relative to the circumferential direction and / or the axis of rotation, then the at least one measuring area can be used to determine the strip edge. This allows for reliable determination of the location of flatness errors relative to the strip edge. This makes the measurements of the measuring roller more accurate.

[0026] The at least one material weakened portion may be at least partially inclined relative to the circumferential direction and / or the axis of rotation, meaning that the at least one material weakened portion may have a tangent that is inclined relative to the circumferential direction and the axis of rotation. For example, in the case of a circular material weakened portion, a portion of the material weakened portion may be inclined relative to the circumferential direction and / or the axis of rotation.

[0027] According to another embodiment, the at least one material weakening portion may be at least partially parallel to the circumferential direction and / or the axis of rotation.

[0028] In this way, the at least one material weakening portion can also be easily formed on the entire measuring roller. The at least one material weakening portion may extend at least partially parallel to the circumferential direction and / or the axis of rotation, which means that the at least one other material weakening portion may have a tangent that can extend parallel to the circumferential direction and / or the axis of rotation. For example, in the case of a circular material weakening portion, a portion of the material weakening portion may be parallel to the circumferential direction and / or the axis of rotation. A straight material weakening portion may be parallel to the circumferential direction and / or the axis of rotation.

[0029] According to another embodiment, the at least one force sensor may be designed as a piezoelectric force sensor, wherein the at least one force sensor may be specifically connected to the at least one measuring area and the measuring roller body in a force-fit manner.

[0030] In this way, the force on the at least one measuring area can be determined with particular precision. Here, the radial position change of the at least one measuring area can be reliably measured by the at least one piezoelectric sensor. If the at least one force sensor can be connected to the at least one measuring area and the measuring roller body, especially in a force-fit manner, the measurement can be particularly accurate.

[0031] The at least one force sensor can be used to measure force, particularly pressure. To measure the force acting on the at least one force sensor, the sensor can be designed to have a sensor surface and generate a sensor signal when the position of the sensor surface changes. The at least one force sensor can typically have a reference system associated with it and can respond to changes in the position of the sensor surface in the reference system. The at least one force sensor can typically have a housing. The reference system can then be the housing. In this embodiment, for example, the at least one force sensor can determine whether the position of the sensor surface relative to the housing has changed. For example, if the at least one force sensor can be designed as a piezoelectric force sensor, then the at least one force sensor can have piezoelectric quartz, which can generate an electrical signal when the position of one of its surfaces relative to a reference surface (e.g., the opposite surface of the piezoelectric quartz) can change, for example, when the piezoelectric quartz can be compressed. If the at least one force sensor can be designed as a strain gauge, then a change in the surface position of the at least one force sensor can change the length of the measuring line or the measuring grid formed by the measuring line, typically stretching it, but in some cases compressing it. If the at least one force sensor can be designed as an optical force sensor, then the optical properties of the at least one force sensor, such as refractive index or reflection properties, can be changed by a change in the surface position. For example, the at least one force sensor can use infrared light. Alternatively, the at least one force sensor can use radar. If the at least one force sensor can use infrared or radar, then at least one force sensor can be advantageously integrated into the measuring roller without requiring a force connection.

[0032] According to another embodiment, the at least one carrier may include the at least one support structure, wherein the at least one measuring region may be connected to the at least one support structure at least partially through the at least one material weakening portion, and / or wherein the at least one measuring region may have lower strength, particularly lower thickness, than the at least one support structure.

[0033] If the at least one measuring area can be at least partially connected to the at least one support structure through the at least one material weakening portion, then the at least one measuring area and the measuring roller can measure strip materials with particularly high accuracy, because the at least one support structure can stabilize the at least one measuring area and protect it from other forces. Simultaneously, due to the at least one material weakening portion, the at least one measuring area can be decoupled from the at least one support structure, so that no force can be transmitted from the at least one support structure to the at least one measuring area. Therefore, very accurate and reliable measurements are achieved.

[0034] If the at least one measuring region can have a lower strength, particularly a lower thickness, than the at least one supporting structure, then the at least one supporting structure can stabilize the at least one measuring region, and due to its lower strength, the at least one measuring region can measure force particularly well. This allows the measuring roller to measure with a specific level of accuracy. If the lower strength of the at least one measuring region relative to the supporting structure can be achieved through a lower thickness, then the measuring roller can be manufactured particularly easily. If the thickness of the at least one measuring region can be less than the thickness of the at least one supporting structure, then the thickness of the at least one supporting structure can be less than the thickness of both the at least one measuring region and the at least one supporting structure. Different thicknesses of the at least one supporting structure, the at least one measuring region, and / or the at least one material weakening portion can be achieved by applying less material or removing a large amount of material on the inner side of the at least one carrier. In this way, the surface of the at least one carrier can be smooth on the outer side. The outer side of the at least one carrier can be the side of the carrier that can contact the strip material. Thus, by using different thicknesses of the at least one supporting structure, the at least one measuring region, and / or the at least one material weakening portion, indentations on the strip material can be prevented while ensuring accurate measurement.

[0035] The thickness of the at least one material weakened portion can be constant. This makes the measurement particularly reliable. If the thickness of the at least one material weakened portion can be constant, then the remaining material thickness of the at least one material weakened portion can be constant in the circumferential direction and along the axis of rotation. In other words, the distance between the outer and inner surfaces of the at least one material weakened portion can be constant.

[0036] Measurements using a measuring roller can be particularly accurate and precise if the at least one measuring area can be at least partially connected to the at least one support structure via the at least one material weakening portion, and if the at least one measuring area can have lower strength, particularly lower thickness, than the at least one support structure.

[0037] The at least one support structure can be a more stable structure than the at least one measurement area. The at least one support structure can support the at least one measurement area. The at least one support structure can have such strength that it cannot affect the measurement of the at least one measurement area. The at least one support structure can partially or completely surround the at least one measurement area. If the at least one support structure can completely surround the at least one measurement area, the measurement can be particularly accurate, and the handling of the at least one support can be particularly easy. This also simplifies manufacturing.

[0038] According to another embodiment, the at least one carrier can be placed at the bottom of the at least one recess, thereby, in particular, the at least one carrier can be force-fitted to the bottom of the at least one recess, especially by fastening it into place.

[0039] In this way, the at least one support can be mounted in a particularly stable manner, allowing the measuring roller to measure with exceptional precision. If the at least one support can be force-fitted to the bottom of the at least one recess, the support can resist forces along the circumferential direction and / or along the axis of rotation with exceptional stability. This allows for the stability of the at least one support, resulting in very high measurement accuracy of the measuring roller. If the at least one support can be securely fastened to the bottom of the at least one recess, the support can be designed to be particularly simple and stable to install. This means that the measuring roller can be designed to be particularly simple and precise. Furthermore, the at least one support can be disassembled or replaced particularly easily for maintenance.

[0040] According to another embodiment, the at least one carrier may be designed to be flush with the surrounding surface of the measuring roller body.

[0041] In this way, indentations on the strip material can be prevented or minimized. Furthermore, since the at least one support rests against the surface, the force from the strip material can be measured with particular precision. The at least one support can be designed to align with the surrounding surface of the measuring roller body, meaning that the at least one support and the at least one measuring area can be designed to align with the surrounding surface of the measuring roller body.

[0042] Alignment with the surrounding surface of the measuring roller body means that the surface of the surrounding surface and the surface of the at least one carrier have the same radial distance from the axis of rotation. Alignment with the surrounding surface of the measuring roller body means that the measuring roller can have a circular cross-section with a constant cross-sectional radius, the cross-section being transverse to the axis of rotation passing through the surrounding surface and the at least one carrier.

[0043] According to another embodiment, the at least one carrier may be welded to the measuring roller body, with or without the use of welding filler material.

[0044] In this way, after the insertion of the at least one carrier, the surface can be sealed to prevent foreign matter such as oil, grease, and / or metal shavings from the strip material from entering between the at least one carrier and the measuring roller body. Welding filler material can be used to seal larger gaps between the measuring roller body and the at least one carrier. Without welding filler material, the measuring roller can be manufactured particularly easily.

[0045] According to another embodiment, the at least one carrier and / or measuring roller body may be covered with a layer, wherein, in particular, the layer may be applied by 3D printing, laser beam melting, electron beam melting, laser powder deposition welding, thermal spraying, surfacing, brazing, wire laser deposition welding, powder bed processes, preferably selective laser sintering (SLS) or selective laser melting (SLM), laser metal deposition (LMD), ultra-high speed laser deposition surfacing (EHLA) and / or wire-feed arc welding.

[0046] By covering the at least one carrier and / or the measuring roller body, an additional coating can be applied, thereby improving the performance of the measuring roller, such as surface hardness. Furthermore, indentations on the strip material can be minimized due to the uniform surface. Additionally, the coating can improve the abrasion resistance and corrosion resistance of the measuring roller.

[0047] According to another embodiment, the at least one carrier may abut against the wall of the at least one recess in the circumferential direction.

[0048] In this way, the at least one carrier can be mounted particularly stably in the at least one recess, allowing the measuring roller to measure with particularly high precision. The at least one carrier can rest against the wall in the at least one recess circumferentially, which may mean that the at least one carrier is in close contact with the wall of the recess. The at least one carrier can also rest against the wall in the at least one recess circumferentially, which may mean that the at least one carrier closes the recess and is flush with the measuring roller body. In this case, manufacturing tolerances during the manufacture and installation of the at least one carrier may limit the contact between the at least one carrier and the circumferential wall in the at least one recess, thus potentially creating a small gap between the measuring roller body and the at least one carrier. The size of this small gap may vary.

[0049] The wall may be a surface of the measuring roller body, which may form a recess and extend from the surrounding surface toward the axis of rotation. The wall may terminate on the surrounding surface of the measuring roller body. The wall may extend radially.

[0050] According to another embodiment, the measuring roller may include the at least one force-fitting element, particularly a plate and / or a wedge, wherein the at least one force-fitting element can force-fit the at least one carrier to the measuring roller body, particularly in the circumferential direction.

[0051] This allows the at least one carrier to be mounted in the at least one recess in a particularly stable manner, thereby preventing positional changes of the at least one carrier during the measurement of strip material. This enables the measuring roller to perform measurements with exceptional precision. If the force-fitting element can be a plate and / or a wedge, the at least one carrier can be connected to the measuring roller body in a particularly simple manner via force fit. This allows for the design of the measuring roller in a particularly simple way.

[0052] According to another embodiment, the at least one carrier may be arranged parallel to or inclined to the axis of rotation.

[0053] If the at least one carrier can be arranged parallel to the axis of rotation, a large number of measurements can be performed side-by-side on the strip. This allows for particularly precise and high-resolution measurements using measuring rollers. If the at least one carrier can be tilted relative to the axis of rotation, the strip can be measured partially at different rotation angles.

[0054] According to another embodiment, the carrier may include at least two measurement areas, wherein the at least two measurement areas may be separated by at least one material weakening portion, such that the at least two measurement areas can be subjected to two independent local measurements.

[0055] Since the at least two measurement zones can only be separated by at least one material weakening section, multiple measurements can be performed directly adjacent to each other using a single carrier. This makes the measurements from the measuring roller particularly accurate.

[0056] The at least two measurement areas can be arranged adjacent to each other and separated only by at least one material weakening portion. In this way, particularly high-resolution and accurate measurements can be performed.

[0057] Two independent local measurements mean that these two measurements will not affect each other and different points on the strip material can be measured simultaneously. This means that two adjacent measurement points on the strip material can also be measured simultaneously without affecting each other.

[0058] According to the second aspect, the above objective is achieved by the method for preparing the measuring roller according to the present invention, wherein the measuring roller having a measuring roller body extending along the axis of rotation is provided with a peripheral surface, wherein at least one recess is formed in the peripheral surface inside the measuring roller body, and wherein at least one carrier is provided in the at least one recess.

[0059] According to the third aspect, the above objective is achieved by the method for determining the properties of a strip material as described in the present invention, wherein the strip material is guided above the measuring roller of the present invention, thereby determining the properties of the strip material.

[0060] According to the fourth aspect, the above objective is achieved by using the measuring roller of the present invention to determine the characteristics of the strip material guided on the measuring roller.

[0061] From the following description and the appended claims, those skilled in the art will clearly understand the objectives, features, advantages, and aspects of the present invention. However, it should be understood that the following description, the appended claims, and the specific embodiments showing preferred embodiments of the invention are for illustrative purposes only. After reading the following description, those skilled in the art will readily conceive of various changes and modifications within the disclosed spirit and scope of the invention.

[0062] definition

[0063] Unless otherwise specified in the appropriate context, the following terms generally have the following meanings.

[0064] The term "comprising" as used herein includes, in addition to its literal meaning, the terms "substantially consisting of" and "consisting of," and specifically refers to the stated content. Therefore, the term "comprising" refers both to an embodiment that "comprising" the specifically listed elements but excludes no other elements, and to an embodiment that "includes" the specifically listed elements but may include and / or actually include other elements. Similarly, the term "having" should be understood as the term "comprising," which also includes and refers to both the expressions "substantially consisting of" and "consisting of." The term "substantially comprising" includes, in addition to an embodiment that consists substantially of the specifically listed elements, an embodiment that includes 20% or less, particularly 15% or less, 10% or less, or 5% or less of other elements. Attached Figure Description

[0065] Figure 1 This is a schematic diagram of the measuring roller;

[0066] Figure 2 This is a cross-sectional view of the measuring roller;

[0067] Figure 3 A schematic diagram of a section of the carrier;

[0068] Figure 4 A schematic diagram of a section of the carrier;

[0069] Figure 5 A schematic diagram of a section of the carrier;

[0070] Figure 6 A cross-sectional view of the measuring roller with the carrier.

[0071] Figure 7 This is a schematic diagram of the cross-section of a measuring roller with four carriers. Detailed Implementation

[0072] Figure 1 A schematic diagram of a measuring roller 2 is shown for determining the properties of a strip of material, particularly a metal strip, guided on the measuring roller 2. The measuring roller 2 includes a measuring roller body 4 having a peripheral surface 6 extending along a rotation axis R, wherein the measuring roller 2 has a recess 8. The recess 8 extends from the peripheral surface 6 into the interior of the measuring roller body 4. The measuring roller 2 includes a carrier 10 disposed within the recess 8. The carrier 10 includes at least one measuring region 12 disposed on at least one force sensor 14. The carrier 10 contains at least one material weakening portion 16, wherein the at least one measuring region 12 is at least partially defined by the at least one material weakening portion 16.

[0073] Figure 2 A cross-sectional view of the measuring roller 2 is shown. The measuring roller 2 includes a measuring roller body 4 having a peripheral surface 6 extending along the axis of rotation R, wherein the measuring roller 2 has a recess 8. The recess 8 extends from the peripheral surface 6 into the interior of the measuring roller body 4. The measuring roller 2 includes a carrier 10 disposed in the recess 8. The carrier 10 includes at least one measuring region 12 disposed on at least one force sensor 14. The carrier 10 includes at least one material weakening portion 16, wherein the at least one measuring region 12 is at least partially defined by the at least one material weakening portion 16.

[0074] The carrier 10 and the measuring roller body 4 are covered by the layer 19, wherein the layer 19 is applied by 3D printing, laser beam melting, electron beam melting, laser powder deposition welding, thermal spraying, overlay welding, brazing, wire laser deposition welding, powder bed process, preferably selective laser sintering (SLS) or selective laser melting (SLM), laser metal deposition (LMD), ultra-high speed laser deposition overlay welding (EHLA) and / or wire feeding arc welding.

[0075] Figure 3 A segment of the support body 10 is schematically shown. The view of the support body 10 is based on the axis of rotation R. The support body 10 includes three visible measuring regions 12, each of which is arranged on a force sensor 14. Each force sensor 14 is arranged at the center of the measuring region 12. The support body 10 includes six material weakening sections 16, three of which define the measuring regions 12. The measuring regions 12 have a parallelogram shape.

[0076] The material weakening portion 16 is produced by milling, drilling, and / or die cutting. Alternatively, the material weakening portion 16 can be generated using a 3D printing process.

[0077] Some of the material weakening portions 16 are inclined relative to the axis of rotation R. Alternatively or additionally, the material weakening portions 16 may be partially inclined relative to the circumferential direction U and / or the axis of rotation R. Two material weakening portions 16 extend at least partially parallel to the axis of rotation R. Furthermore or alternatively, the material weakening portions 15 may extend at least partially parallel to the circumferential direction U.

[0078] The three force sensors 14 are designed as piezoelectric force sensors 14. The force sensors 14 are connected to the measuring area 12 and the measuring roller body 4 in a force-fit manner.

[0079] The support 10 includes a support structure 18. The measuring region 12 is connected to the support structure 18 via a material weakening portion 16. Furthermore, because the thickness of the measuring region 12 is less than that of the support structure 18, the strength of the measuring region 12 is lower.

[0080] Figure 4 A segment of the support body 10 is schematically shown. The view of the support body 10 is based on the axis of rotation R. The support body 10 includes a measuring region 12, which is arranged on three force sensors 14. The support body 10 includes three material weakening portions 16, thereby defining the measuring region 12. The measuring region 12 has a triangular shape.

[0081] Figure 5 A segment of the support body 10 is schematically shown. The view of the support body 10 is based on the axis of rotation R. The support body 10 includes three visible measuring regions 12, each of which is arranged on a force sensor 14. The force sensor 14 is arranged at the edge of the measuring region 12. The support body 10 includes five material weakening sections 16, thereby defining the three measuring regions 12 at least partially by the material weakening sections 15. Each measuring region 12 is defined by a material weakening section 17 parallel to the axis of rotation R and two parallel material weakening sections 16, wherein the two parallel material weakening sections 16 are arranged at an angle to the axis of rotation R and the circumferential direction U.

[0082] Figure 6 A cross-sectional view of the measuring roller 2 with the carrier 10 is shown.

[0083] The carrier 10 is placed at the bottom of the recess 8. The carrier 10 is connected to the bottom of the recess 8 by force engagement. For this purpose, the carrier 10 is tightly connected to the bottom of the recess 8. The carrier 10 is designed to align with the surrounding surface 6 of the measuring roller body 4.

[0084] The carrier 10 is welded to the measuring roller body 4. The carrier 10 can be welded to the measuring roller body 4 with or without filler material.

[0085] The support 10 rests against the wall 20 in the recess 8 along the circumferential direction U.

[0086] The measuring roller 2 includes a force-fitting element 22. The force-fitting element 22 is a wedge-shaped piece. Alternatively, the force-fitting element 22 may also be a plate. The force-fitting element 22 connects the carrier 10 to the measuring roller body 4 in the circumferential direction U in a force-fitting manner.

[0087] like Figure 1 As shown, the support body 10 is arranged parallel to the rotation axis R. Alternatively, the support body 10 may be arranged at an angle to the rotation axis R.

[0088] like Figure 3 As shown, the carrier 10 includes three measurement areas 12, wherein the measurement areas 12 are separated by material weakening portions 16 so that the measurement areas 12 can be measured independently and locally.

[0089] Figure 7 A schematic cross-sectional view of a measuring roller 2 having four carriers 10 is shown. The four carriers 10 are arranged at a 90° offset from each other. Each of the four carriers 10 is arranged in one of four recesses 8. Each of the four carriers 10 includes at least one measuring area 12. Each measuring area 12 is arranged on a force sensor 14. Each carrier 10 includes a material weakening portion 16. The measuring area 12 is defined by the material weakening portion 16.

Claims

1. A measuring roller (2) for determining the properties of a strip material, particularly a metal strip, guided on a measuring roller (2). in, The measuring roller (2) includes a measuring roller body (4) having a surrounding surface (6) extending along the axis of rotation (R). The measuring roller (2) includes at least one recess (8). Wherein, at least one recess (8) extends from the surrounding surface (6) into the interior of the measuring roller body (4), The measuring roller (2) includes at least one carrier (10). Wherein, at least one carrier (10) is arranged in at least one recess (8), The at least one carrier (10) includes at least one measuring area (12). The at least one measuring area (12) is arranged on at least one force sensor (14). The feature is that the at least one support (10) includes at least one material weakening part (16). The at least one measurement area (12) is defined at least partially by the at least one material weakening portion (16).

2. The measuring roller according to claim 1, characterized in that, The at least one material weakening part (16) is prepared by milling, drilling and / or molding, and / or the at least one material weakening part (16) is prepared by 3D printing.

3. The measuring roller according to claim 1 or 2, characterized in that, The at least one material weakening portion (16) is at least partially inclined relative to the surrounding direction (U) and / or the axis of rotation (R).

4. The measuring roller according to any one of claims 1 to 3, characterized in that: The at least one material weakening portion (16) extends at least partially along the circumferential direction (U) and / or the axis of rotation (R).

5. The measuring roller according to any one of claims 1 to 4, characterized in that, The at least one force sensor (14) is designed as a piezoelectric force sensor (14), wherein the at least one force sensor (14) is connected to the at least one measuring area (12) and the measuring roller body (4) in a force-fit manner.

6. The measuring roller according to any one of claims 1 to 5, characterized in that, The at least one carrier (10) includes at least one support structure (18), wherein the at least one measuring region (12) is at least partially connected to the at least one support structure (18) through the at least one material weakening portion (16), and / or wherein the strength, in particular the thickness, of the at least one measuring region (12) is lower than that of the at least one support structure.

7. The measuring roller according to any one of claims 1 to 6, characterized in that, The at least one support (10) is disposed on the bottom of the at least one recess (8), wherein in particular the at least one support (10) is connected to the bottom of the at least one recess (9) by means of force engagement, especially by means of screws.

8. The measuring roller according to any one of claims 1 to 7, characterized in that, The at least one carrier (10) is configured to be flush with the surrounding surface (6) of the measuring roller body (4).

9. The measuring roller according to any one of claims 1 to 8, characterized in that, The at least one carrier (10) is welded to the measuring roller body (4), with or without the use of welding filler material.

10. The measuring roller according to any one of claims 1 to 9, characterized in that, The at least one carrier (10) and / or the measuring roller body (4) are covered with a layer (19), wherein the layer (19) is applied in particular by 3D printing, laser beam melting, electron beam melting, laser powder deposition welding, thermal spraying, surfacing, brazing, wire laser deposition welding, powder bed processes, preferably selective laser sintering (SLS) or selective laser melting (SLM), laser metal deposition (LMD), ultra-high speed laser deposition surfacing (EHLA) and / or wire-feed arc welding.

11. The measuring roller according to any one of claims 1 to 10, characterized in that, The at least one carrier (10) abuts against the wall (20) in the at least one recess (8) in the circumferential direction (U).

12. The measuring roller according to any one of claims 1 to 11, characterized in that, The measuring roller (2) includes at least one force-fitting element (22), particularly a plate and / or a wedge, wherein the at least one force-fitting element (22) connects the at least one carrier (10) to the measuring roller body (4) in a force-fitting manner, particularly in the circumferential direction (U).

13. The measuring roller according to any one of claims 1 to 12, characterized in that, The at least one carrier (10) is configured to be parallel or inclined relative to the axis of rotation (R).

14. The measuring roller according to any one of claims 1 to 13, characterized in that, The carrier (10) includes at least two measurement areas (12), wherein the at least two measurement areas (12) are separated by the at least one material weakening portion (16), such that the at least two measurement areas (12) perform two independent local measurements.

Images