Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
  • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C19/00—Devices for straightening wire or like work combined with or specially adapted for use in connection with drawing or winding machines or apparatus
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
  • B21D1/05—Stretching combined with rolling
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
  • B21B2015/0071—Levelling the rolled product
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
  • B21B2203/38—Strain gauges
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
  • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
  • B21B39/08—Braking or tensioning arrangements
  • B21B39/082—Bridle devices

Definitions

• the invention relates to a tension roller for a belt treatment plant, in which the belt is guided over the tension roller and the belt tension is increased or reduced by the tension roller between the inlet to the tension roller and the outlet of the tension roller. Furthermore, the invention relates to a strip processing plant and the use of a tensioning roller.
• the band passing through the strip processing plant is subjected to a strip tensile force.
• This can be done with tension rollers.
• these tension rollers are driven by a motor and retard or accelerate the belt by transmitting frictional forces.
• the strip tension can be increased after the tensioning roller.
• the strip tension can be reduced to the tension roller.
• strip straightening systems which are used to eliminate unevenness. By plastic stretching the shorter band shares in the band, a length compensation is achieved and are thus removed, for example, center or edge waves. In doing so, band sections, which were different in length before the straightening process and therefore partly wavy, different plastic elongated.
• the belt treatment plants used for this purpose regularly have an inlet clamping drum set with tension rollers, in which the strip tension is increased in relation to the strip tension in the line, a stretching zone or a stretch bending stand and an outlet tensioning drum set, in which the tensioning cable is reduced again to the level of the line.
• the strip In the stretch bending stand, the strip is bent alternately at high tension around bending rolls of small diameter. In this case, the elasticity limit is exceeded in the band.
• the superimposition of the elastoplastic bending with the strip tension produces a permanent elongation, the so-called degree of stretching.
• the required tension is applied by the tension drum sets and must reach the yield point of the material.
• a combination of stretching and stretch bending is used for certain products, such as aluminum strip, since this often results in better flatness results.
• the band In the band straightening process, the band is set under high longitudinal tension. Waves or bumps in the band, which would be visible without a longitudinal tension, do not appear. The resulting tension distribution is therefore dependent on the length distribution present in the belt. In this case, the shorter band fibers assume higher stress components when applying an outer band tensile stress than longer band fibers. In order for the stretching zone and / or the bending stand to be optimally adjusted, it is necessary to measure the flatness of the strip continuously.
• a measurement method for flatness measurement of bands is known from EP 0 988 904 A2. There, a method is described according to which the strip tension for measuring the flatness is reduced by means of tensioning rollers, so-called S-roller sets. An optical measuring device arranged after the outlet of the tape from the S-roll set measures the flatness of the tape in the almost belt-tension-free tape. After measuring the band flatness, the band tension is again increased to the strip tension of the line by means of S roll sets.
• measuring rollers are known, for example, from DE 42 36 657 C2, DE 297 21 085 U1, DE 102 07 501 C2, DE 18 38 457 A1, DE 199 18 699 A1 and DE 196 16 980 A1.
• the installation location for the measuring roller is the option to use it either in the stretching zone, after the bending stand or after the Auslaufspanntrommelsatz, for example in front of the take-up drum.
• the object of the invention is to propose a device for detecting strip flatness in strip processing plants, which reduces the dead distance, shortens the settling time, increases the speed of the process and avoids influencing the strip to be measured during the measurement.
• This object is solved by the subject matter of claim 1.
• Advantageous embodiments are specified in the subclaims.
• the invention is based on the basic idea of designing the tensioning roller, which is provided anyway for setting the desired strip tensioner, as a measuring roller.
• the tensioning roller according to the invention for a belt treatment plant is equipped with at least one measuring sensor arranged on the circumference of the tensioning roller for detecting the tension in the belt.
• several measuring sensors are provided to measure the stress distribution in the belt.
• the measuring sensor can be arranged in recesses which are open towards the outer circumference of the roller.
• the measuring sensor may be arranged in the vicinity of the outer circumference of the tensioning roller such that the deflecting force of the belt acting in the radial direction acts on the measuring sensor by the material layer of the tensioning roller remaining between the measuring sensor and the outer circumference.
• strain gauges or so-called Preßduktoren can be used as measuring sensors in particular piezoelectric force transmitter. Preßduktoren were developed by the company ABB about 1953 and are based on the magnetoelastic effect.
• a tension roller is characterized in that it is designed, for example by a motor drive, its surface condition and / or its storage, to act, for example, by frictional forces on the belt and to accelerate the belt section guided over it, depending on the direction of action or to slow down.
• the measuring sensors can be arranged in a row in the direction of the tension roller longitudinal axis. As a result, the voltage state in the strip in the same strip length position is measured by the measuring sensors. As a result, the flatness of the strip at this strip length position can be determined.
• Alternative arrangements of the measuring sensors are, for example, a helical arrangement on the circumference of the tensioning roller.
• the tensioning roller is particularly preferably coated, particularly preferably with rubber or polyurethane. Due to the coating, frictional forces for generating the desired strip tension can be transferred particularly well to the strip.
• the coating is preferably designed such that it also covers the measuring sensor, so for example, also covers a arranged on the outer circumference of the roll strain gauges.
• the tension roller has a diameter which results from the relationship h max / D ro ii e ⁇ yield point / modulus of elasticity, where h max is the maximum thickness of the strip, D ro n e the tension roller diameter, yield point the yield point of the Band material and modulus of elasticity of the E-modulus of Bandmateri ⁇ as is.
• This large roll diameter avoids the introduction of ribbon form errors, such as longitudinal and transverse bends, into the strip.
• the tensioning roller can be formed as a hollow shaft. This design further simplifies access to the measuring sensors.
• a measuring sensor can be a force measuring transducer with a cover which, in the operating state, bears with its surface directly against the surface of the strip to be tested.
• the cover is preferably without wall contact only in a recess in which the Kraft ⁇ measuring sensor is arranged in the direction of the axis of the measuring roller 29ieb ⁇ bar.
• the cover may be acted upon by the deflection force of the band, and the two opposite end faces of the force Measuring sensors are loaded by both of the one end face is clamped on the footprint of the recess, while the other is exposed to the Beauschelagung with the deflection force on the cover.
• An inventively provided with the tension roller according to the invention strip treatment plant may comprise a tensioning roller set, in which the tensioning roller according to the invention is the tensioning roller closer to the treatment step in Bandlaufrich ⁇ direction. As a result, the dead time is shortened.
• a strip treatment plant is any conceivable device which is suitable for transport, for treatment, for coating or the like of a continuous belt.
• the strip in a strip treatment plant according to the invention with a tensioning roller according to the invention, can be guided around the tensioning roller at a wrap angle of at least 180 °, in particular preferably of 270 °.
• a tensioning roller according to the invention for measuring the change of the strip tension from the inlet of the strip to the tensioning roller to the outlet of the strip from the tensioning roller can be used. In this way, results can be determined about the strip tension structure via the tension pulley.
• FIG. 1 shows the use of the tensioning roller according to the invention in a belt treatment plant for stretch bending in a schematic
• FIG. 2 shows the arrangement of the load cell cover in a tensioning roller according to the invention in a cross section;
• Fiq. 3 shows the use of the tensioning roller according to the invention in a belt treatment plant for drawing in a schematic side view and
• FIG. 3 shows the use of the tensioning roller according to the invention in a belt treatment plant for drawing in a schematic side view and
• FIG. 4 shows the use of the tensioning roller according to the invention in a belt treatment plant for stretch bending and drawing in a schematic side view.
• the strip treatment plant shown in FIG. 1 has an inlet clamping drum set 1 with tensioning rollers 2, 3, 4, 5. Downstream of the run-in tensioning drum set in the strip running direction is a stretch bending stand 6. A runout tensioning drum set 7 with tensioning rollers 8, 9, 10, 11 is arranged downstream of the stretching bending stand 6 in the direction of belt travel. The tension roller 8 of the Auslaufspanntrom- melsatzes 7 is designed as a tension roller with measuring sensors.
• the strip tension of the strip processing system shown in FIG. 1 is increased by the entry clamping drum set.
• the stretch bender 6 treats the strip.
• the strip tension is lowered to a level determined for the subsequent method steps.
• the band flatness is measured.
• the measurement results of the plane measurement are fed to the regulation of the stretch bending stand 6 in order to achieve a predetermined flatness.
• the strip treatment plant shown in FIG. 3 differs from that shown in FIG. 1 in that no stretch bending stand 6 is provided between the inlet tensioning drum set 1 with tensioning rollers 2, 3, 4, 5 and the outlet tensioning drum set 7 with tensioning rollers 8, 9, 9, 11 ,
• the band treatment takes place here by means of stretching.
• another tensioning roller pair 12, 13 and in the outlet tensioning drum set a further tensioning roller pair 14, 15 are provided in the inlet tensioning drum set.
• FIG. 4 shows a combined treatment by drawing and stretching bending straightening.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Force Measurement Appropriate To Specific Purposes (AREA)
• Pretreatment Of Seeds And Plants (AREA)
• Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
• Nonmetallic Welding Materials (AREA)
• Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=35229708

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (5)

Family Cites Families (3)

• 2004
  • 2004-09-03 DE DE102004043150A patent/DE102004043150A1/de not_active Withdrawn
• 2005
  • 2005-09-02 EP EP05778086A patent/EP1789211B1/fr active Active
  • 2005-09-02 AT AT05778086T patent/ATE414575T1/de active
  • 2005-09-02 WO PCT/EP2005/009461 patent/WO2006027172A1/fr active Application Filing
  • 2005-09-02 DE DE502005006017T patent/DE502005006017D1/de active Active

Non-Patent Citations (1)

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