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WO2000058039A1 - Procede d'enroulement de bandes - Google Patents

Procede d'enroulement de bandes Download PDF

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Publication number
WO2000058039A1
WO2000058039A1 PCT/JP1999/005198 JP9905198W WO0058039A1 WO 2000058039 A1 WO2000058039 A1 WO 2000058039A1 JP 9905198 W JP9905198 W JP 9905198W WO 0058039 A1 WO0058039 A1 WO 0058039A1
Authority
WO
WIPO (PCT)
Prior art keywords
strip
winding
pinch roll
mandrel
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1999/005198
Other languages
English (en)
Japanese (ja)
Inventor
Taichi Kukizaki
Yasuo Ichii
Toshio Imazeki
Satoshi Shibuya
Kiyoshi Ueda
Itaru Hishinuma
Hideyuki Nikaidoh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to DE69928559T priority Critical patent/DE69928559T2/de
Priority to US09/673,954 priority patent/US6301946B1/en
Priority to EP99944792A priority patent/EP1121994B1/fr
Priority to AT99944792T priority patent/ATE310594T1/de
Priority to CA002332953A priority patent/CA2332953C/fr
Publication of WO2000058039A1 publication Critical patent/WO2000058039A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/02—Winding-up or coiling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/003—Regulation of tension or speed; Braking

Definitions

  • a strip fed from a hot rolling mill is cut into a predetermined length by a strip shear, and the cut strip is wound on a winding pinch disposed on the exit side of the strip shear.
  • the present invention relates to a method for winding a strip which is wound by a mandrel of a winding device via a roll.
  • Fig. 16 shows the general outline of a general continuous hot rolling line.
  • switching of the winding device has been performed as follows.
  • a strip d sent from the finishing mill c is transferred to the downstream of the finishing mill c.
  • the lower pinch port g of the winding pinch roll f arranged at the outlet side of the strip shear e is moved to the upstream side.
  • the transport direction of the strip is switched in advance from the preceding material take-up device a to the succeeding material take-up device b, and the leading strip becomes the take-up pin.
  • the trailing strip d 2 is invited to the trailing material winding device b And guide and wound by the following material winding device b the rear row string-up d 2. At this time, to prevent the trailing strip d 2 is gradually penetrate the preceding material winding device a side by a triangular gate j.
  • FIG. 20 schematically shows an example of a continuous hot rolling line in which a force-roiling reel type winding facility is arranged.
  • the power roselle reel type winding device is provided with first and second mandrels 1 and 2, and the first and second mandrels 1 and 2 are arranged such that when one is at the winding start position, the other is at the winding start position. They are arranged on the orbit 3 so as to be pivotally separated from each other in the circumferential direction so as to be located at the winding end position. Then, for example, when the first mandrel 1 is located at the winding start position, after a predetermined amount of the preceding strip sent out from the finishing mill 4 by the first mandrel 1, the preceding strip S!
  • an upstream thread guide that guides the tip of the strip S toward the upstream mandrel. 6 to 13 are arranged, and the winding ends at the upper and lower sides of the downstream pass line P 2 diverging from the upstream pass line P, and heading to the mandrel at the winding end position (the second mandrel 2 in the figure).
  • downstream side guides 13 to 15 and guide rollers 20 for guiding the strip S to be wound around the mandrel.
  • reference numeral 16 denotes a pass line P
  • a pinch roll disposed between the finishing mill 4 and the strip shear 5
  • reference numeral 17 denotes a pass line P, at which the strip shear 5 exits.
  • 18 is an upstream wrapper roll arranged so as to be able to move closer to and away from the outer peripheral surface of the mandrel at the winding start position
  • 19 is a winding end position.
  • These are downstream rolls arranged on the outer peripheral side of the mandrel so as to be able to move close to and away from each other, and the upper and lower wrapper rolls 18 and 19 and the upper guide 14 of the downstream side plate guide.
  • the present invention has been made to solve such a disadvantage. After the tail end of a strip wound by a mandrel is cut by a strip shear, the strip is moved out of the strip shear. It is possible to prevent looseness on the exit side of the take-up pinch roll arranged at the same time, and to prevent the tip of the following strip from loosening on the entry side of the take-up pinch roll. It is an object of the present invention to provide a method of winding a strip. Disclosure of the invention
  • the strip winding method of the present invention cuts a strip fed from a rolling mill into a predetermined length by a strip shear, and cuts the cut strip into the strip shear.
  • the strip is wound by a mandrel of a winding device via a pinch roll for winding arranged on the exit side of the strip.
  • the peripheral speed of the winding pinch roll after cutting the tail end of the strip wound on the mandrel via the winding pinch roll with the strip shear is the same as that immediately after the cutting. It is characterized in that the speed is higher than the conveying speed of the row material and lower than the winding speed of the strip by the mandrel.
  • the strip after cutting is subjected to a pulling force acting between the strip shear and the winding pinch roll toward the downstream side, and the downstream side between the winding pinch roll and the mandrel. Since the bowing force acts, the leading strip can be prevented from loosening on the exit side of the winding pinch roll, and the peripheral speed of the winding pinch roll can be reduced immediately after the cutting. Since the transport speed of the following material is higher than that of the following material, it is possible to prevent the leading end of the following material from loosening on the entrance side of the winding pinch opening.
  • the mandrel is a mandrel of a carousel-type winding device, and after cutting the tail end of a strip wound on the mandrel through the winding pinch roll by the strip shear.
  • the relationship between the set winding speed V ra of the mandrel of the above, the target speed V P of the winding pinch roll at the time of the cutting, and the plate speed V s of the following material immediately after the cutting is represented by V m >
  • V p> V s By setting V p> V s, the leading strip is caught at the end of the thread guide at the branch position between the pass line toward the mandrel at the winding start position and the pass line toward the mandrel at the winding end position. Can be prevented.
  • the strip cut to a predetermined length by the strip shear is passed through a first winding pinch roll arranged on the exit side of the strip shear and the mandrel of the upstream winding device and the downstream mandrel.
  • the stripping method includes a second winding pinch roll disposed on an inlet side of a downstream mandrel.
  • the first ⁇ pinch rolls The relationship between the target speed V P2 of the following material, the target plate speed V s of the succeeding material immediately after the cutting, and the set winding speed V m of the downstream mandrel is defined as V m > V PI > V pZ > Vs. It is possible to prevent the strip from being damaged due to the tail end of the strip catching on the triangular gate.
  • the tail end of the strip wound on the downstream mandrel via the second winding pinch roll after offsetting the lower pinch roll of the first winding pinch roll, the tail end of the strip wound on the downstream mandrel via the second winding pinch roll.
  • the upper pinch roll of the first winding pinch roll before cutting is performed by the strip shear.
  • the strip is pressed until the actual torque value of the first lower pinch roll reaches a predetermined set value, and the upper pinch roll is pressed when the pressing force at this time is offset.
  • the winding pinch is used prior to continuously winding the strip cut by the strip shear by the mandrel through the winding pinch port arranged on the exit side of the strip shear.
  • the winding control of the strip by the mandrel is switched from the torque control to the rotation speed control, and thereafter, the strip is wound into a coil.
  • the strip is torque-controlled by the mandrel so as to increase the tension of the strip.
  • the deceleration of the coil due to the contact of the presser roll can be prevented, and the occurrence of loose winding of the outer winding of the coil and the occurrence of poor winding such as a telescope can be avoided, and the strip
  • the rotation of the coil can be stopped in a short time because the holding hole has a braking force.
  • the winding pinch roll is By setting the torque limit on the deceleration side in the drive device of the winding pinch roll so that the peripheral speed is faster than the conveying speed of the following material, the bending rigidity of the thick dog is increased. Even in the case of a trip, the trailing material can be prevented from loosening on the entrance side of the winding pinch roll.
  • FIG. 1 is an explanatory diagram for explaining a strip winding method according to a first embodiment of the present invention.
  • FIG. 2 is an explanatory diagram illustrating an example of an operation pattern (speed pattern) of each part at the time of strip cutting and winding.
  • FIG. 3 is an explanatory diagram illustrating the state of the leading strip and the trailing strip from the time of cutting the strip to the time after the cutting.
  • FIG. 4 is an explanatory diagram for explaining a strip winding method according to a second embodiment of the present invention.
  • FIG. 5 is a view for explaining a strip winding method according to a third embodiment of the present invention, and is a schematic perspective view of a driving mechanism of a winding pinch roll on the side of the stripper.
  • FIG. 6 is a graph showing the change over time in the rotation speed and load torque of the take-up pinch roll on the exit side of the strip shear when the torque limit on the reduction side is set.
  • FIG. 7 is a graph showing the change over time in the rotation speed and load torque of the winding pinch roll on the strip shaft exit side when the torque limit on the reduction side is not set.
  • FIG. 8 is a diagram used for describing the fourth embodiment of the present invention, and is a diagram illustrating a dynamic model of a winding coil.
  • FIG. 9 is a graph showing the measurement results of the speed and torque of the mandrel at the end of winding.
  • Figure 10 shows the measurement of mandrel speed and torque at the end of winding. It is a graph showing a result.
  • FIG. 11 is a diagram used for describing the fifth embodiment of the present invention, and is a graph showing the relationship between the pushing force of the strip by the upper pinch roll and the pushing amount by the pinch roll for winding.
  • Fig. 12 is a time chart of the pressing force of the strip by the upper pinch roll and the cylinder oil injection command.
  • Fig. 13 is a time chart of the pressing force of the strip by the upper pinch roll and the cylinder oil injection command.
  • FIG. 14 is a side view of the winding pinch roll when it is offset.
  • Fig. 15 is a side view when the strip is pushed down by the upper pinch roll for the winding pinch roll.
  • FIG. 16 is an overall schematic view of a general continuous hot rolling line.
  • FIG. 17 is an explanatory diagram for explaining the looseness of the tail end of the strip on the exit side of the winding pinch roll.
  • FIG. 18 is an explanatory diagram for explaining a problem when the pushing force of the strip by the upper pinch roll is small.
  • FIG. 19 is an explanatory diagram for explaining the looseness of the leading end of the following strip on the entry side of the winding pinch roll.
  • FIG. 20 is a view schematically showing a power rosell-type winding facility.
  • FIG. 21 is an explanatory diagram for explaining the looseness of the tail end of the strip at the exit side of the winding pinch roll.
  • FIG. 1 schematically shows a portion of the continuous hot rolling line on the downstream side of the strip shear.
  • a finishing mill (not shown) is used.
  • Both the downstream winding device 104 and the upstream winding device 101 rotate the mandrel 107 as a means for pulling the strip wound around the mandrel 107 with a predetermined winding tension.
  • the motor 1 108 is filtered so that the detected torque value obtained by the torque detector 1 09 and the torque detector 1 0 9 matches the target torque value.
  • Torque control device 110 to maintain the strip tension at a constant level by performing feedback control, pilot nozzle 1101 (PLG) 111 to detect the rotation status of motor 108, and pilot generator 1 And a speed control device for feedback control of the motor so that the detected speed value obtained by the control unit matches the target speed.
  • PSG pilot nozzle 1101
  • the downstream winding pinch roll 103 has a torque detector 114 for detecting the torque of the motor 113 of the lower pinch roll 103a and a pie for detecting the rotation state of the motor 113.
  • Speed control for feedback control of motor 113 so that the speed detection value obtained by mouth generator (PLG) 115 and pilot generator 115 matches the target speed V pl Device 1 16.
  • the upstream pinch roll 1 Q5 is also the same as the lower pinch roll 1 Q5.
  • the lower pinch roll 105a can be moved along the pass line to the upstream side when changing the offset angle when switching from the downstream winding device 104 to the upstream winding device 101, and the upper pinch roll.
  • the roll 105b is capable of pressing the strip via a hydraulic cylinder 122 to push the strip down. Further, a pressing force detector 122 for detecting a pressing force applied to the upper pinch roll 105b is attached to the upper pinch roll 105b.
  • the pressing force applied to the upper pinch roll 1 0 5 b via the hydraulic cylinder 1 2 1 is determined by the detected pressing force obtained by the pressing force detector 1 2 2.
  • Feedback valve 1 2 7 that switches oil supplied from hydraulic pump 1 2 6 to hydraulic cylinder 1 2 1 is fed back by pinch roll pressing force controller 1 2 5 so that it matches the pressing force. It is determined by controlling. Note that the pinch roll pressing force control may be performed by an air.
  • the leading strip S is changed by the mandrel 107 of the downstream winding device 104.
  • the lower pinch roll 105a of the upstream winding pinch roll 105 is moved to the upstream side along a pass line by a hydraulic cylinder (not shown) or the like, and the By changing the offset angle of the upstream-side winding pinch roll 105, the transport direction of the strip is switched in advance from the downstream-side winding device 104 to the upstream-side winding device 101, and Immediately after the tape exits the upstream take-up pinch roll 105 Keep to the trailing strip S 2 can be guided to the upstream side winding device 1 0 1 side.
  • a triangular gate to prevent the code 1 2 8 tip of the trailing strip S 2 is gradually penetrate the downstream winding device 4 side in FIG.
  • the cut-off completion signal is sent from the stripper 102 or the host computer to the speed control device 1 1 2 of the downstream winding device 104, and the speed control device 1 1 of the pinch roll 1 103 for the downstream winding. 6, and the speed control device 120 of the upstream winding pinch roll 105 are notified, respectively.
  • the disconnection completion signal is time t.
  • the mandrel 107 of the downstream winding device 104 switches from the tension control by the torque control device 110 to the speed control by the speed control device 112.
  • the speed control device 1 1 2 starts accelerating the winding speed of the strip, As such, the acceleration rate Bok final speed V m after the end of acceleration in X starts the speed control such that the following equation (1).
  • V m V s XA... (1)
  • V s is the transport speed of the strip immediately before cutting
  • A is the lead rate (coefficient for determining the final speed).
  • Time t of the start of the acceleration During the delay time T1 from the time t to the time t, the speed of the downstream winding pinch roll 103 is cut off by the speed control device 116 of the downstream winding pinch roll 103. The previous strip speed V s is maintained.
  • the speed control device 116 starts accelerating the speed of the downstream winding pinch roll 103, and as shown by the curve II in FIG. — Start speed control so that the final speed V spl after acceleration ends at Y with the following equation (2).
  • the delay time T1 is measured by the timer of the speed control device 116 or a host computer.
  • V Pl V s XB... (2)
  • B is the lead rate
  • the relation between lead rates A and B is A> B.
  • the time t of the start of acceleration Between the delay time T 2 of the up to time t 2 is more to the speed control device 1 2 0 pinch rolls 1 0 5 preparative upstream winding, the speed of the upstream-side take-pinch roll 1 0 5 cutting The previous strip speed is maintained at Vs. And power, and, at a time t 2, the speed control device 1 2 0 in together when starting the acceleration of the speed of the upstream winding take-up Vinci roll 1 0 5, as shown by the curve III 2, the When the acceleration rate is Z, speed control is started so that the final speed VP2 after the end of acceleration becomes the following equation (3). Note that the above delay time T 2 is measured by the timer of the speed control device 120. The delay time T 1 and T 2 are set to T 1 ⁇ T 2.
  • V P2 V s XC (3)
  • C is the lead rate
  • the relationship between the lead rates B and C is B> C.
  • the speed ratio y of the final speed V m and the final speed V pl speed ratio x, and final velocity V P l and the final velocity V P2 is as follows.
  • the above-mentioned speed ratio X is secured also in the speed ratio of the downstream winding device 104 and the downstream winding pinch roll 103 in the acceleration process, and the downstream winding pinch roll 10 It is preferable that the above-described speed ratio y is secured also in the speed ratio of the acceleration process between the pinch roll 3 and the upstream winding pinch roll 105.
  • X is the acceleration rate of the downstream winding device 104
  • T1 is the delay time shown in FIG.
  • the delay time T 1 becomes the following equation, and the delay time T 1 may be set as in the following equation.
  • T 1 (V s / X) (A / B 1) (9)
  • T2 (T1 + T3).
  • downstream ⁇ device 1 0 4 downstream take-pinch roll 1 0 3, and acceleration of the upstream winding pinch rolls 1 0 5, the Gyosu Bok Clip S 2 after being cut It must be completed before the leading end reaches the upstream winding pinch roll 5. That is, it is necessary that the relationship between the times t 4 , t 5 , t 6 , and t 7 shown in FIG. 2 satisfy the following condition.
  • the distance between the upstream winding pinch roll 105 and the strip shear 102 is 10 Cm
  • the strip S after cutting has a V Vs between the stripper 102 and the winding pinch roll 105 because the V S is equal to V Vs.
  • the pinch roll 1 0 5 pulling force acts to toward the downstream side, take-up for a V P l> V p2 is between the pinch rolls 1 0 5 and the take-up pinch roll 1 0 3 roll-up
  • a pulling force acts downstream by the pinch roll 103 for winding, and the pinch roll 103 for winding takes Force pulling to the downstream side is applied by the mandrel 1 0 7 for a V m> V pl in between the mandrel 1 0 7 downstream ⁇ device 4.
  • the exit side of the winding pinch roll 105 that is, between the winding device 104 and the downstream winding pinch roll 103 and between the downstream winding pinch roll 103 and the upstream side
  • the trailing end of the preceding strip S can be prevented from sticking to the winding pinch roll 105, and as a result, the trailing end of the leading strip S, gets caught on the triangular gate 26. breakage of the strip can also be prevented, and further, V P 2> V S and to feedrate of the winding pinch port Ichiru 1 0 5 becomes faster than the conveying speed of the trailing string-up S 2 Since the speed is set to, it is possible to prevent the leading end of the trailing strip S 2 from loosening on the entrance side of the winding pinch roll 105.
  • the take-up pinch roll 1 of the downstream take-up device 4 will not work. Since the tail end of the strip to be wound at 07 cannot be sufficiently held by the upstream winding pinch roll 105, the tail end of the strip is at the upstream winding pinch roll 10 5 causes slippage without being sufficiently suppressed, and as shown in FIG. 18, there is a looseness between the downstream winding device 104 and the upstream winding device 101. Therefore, in this embodiment, a pressing force that can reliably pinch the strip with the upstream winding pinch roll 105 is set, and before the cutting, the upstream winding pinch roll 105 is set. Preceding Strip S! Is securely clamped.
  • the pressing force detector of the upstream winding pinch roll 105 is placed in the upper pinch roll 105b side, and the leading strip is located downstream. Wound around the winding pinch roll 107 of the winding device 104
  • the leading strip S is pushed down from the pass line according to the offset amount of the lower pinch roll 105a.
  • Strip S! Must be sandwiched between the upper and lower pinch rolls 105b and 105a.
  • the leading strip S is pressed by the upper pinch opening 105b of the upstream winding pinch roll 105 via the hydraulic cylinder 122.
  • the pressing force at this time is set by the compensating pressing force setting unit 1 2 4 o
  • the compensating push force setting device 124 has a leading strip S! With the upper pinch roll 105b and the lower pinch roll 105a for the upstream winding pinch opening 105. This is to set a compensating pushing force that securely clamps the upstream stripping pin 105.
  • the strip S After the offset angle of the upstream winding pinch roll 105 has been changed, the strip S At an appropriate timing until the tail end is cut, the speed control device 120 is controlled to adjust the speed standard of the lower pinch roll 105a to the preceding strip S! Of slightly slower than the plate speed V s, the set value is detected torque value T by the torque detector 1 1 8 preset in this state T.
  • the feed-back control of the servo valve 1 26 is performed via the pinch roll pressing force control device 1 15 until the pressure becomes, and the strip S, is kept pressed.
  • the force P s (N) for sandwiching the leading strip S, between the upper pinch roll 105b and the lower pinch opening 105a is equal to the leading strip and the lower pinch roll 1 ⁇ 5.
  • the speed difference between a ⁇ ⁇ (mpm), the coefficient of friction of the preceding string-up and lower pinch rolls 1 0 5 a to change the speed difference ⁇ 2 ( ⁇ V), the lower pinch roll 1 0 5 a performance When the torque is T (Nm) and the radius of the lower pintilol 105 a is r (m),
  • the compensation set pushing force Ps can be obtained by measuring the actual torque ⁇ at the lower pinch opening. Can be.
  • the upstream winding is performed to such an extent that the tail end of the preceding strip S is not knocked even if the cutting is performed by the strip shear 102.
  • the compensation setting pushing force P s! That can pinch the strip with the pinch roll 105 The obtained beforehand, when the Shitapi Nchiroru 1 0 5 a speed settings before the cut set slower by a predetermined speed delta [nu than the strip S, the plate speed V s, wherein the compensation set pushing force P s The torque value T of the lower pinch roll 105 a when Is set in advance in the compensating push force setting device 1 2 4.
  • the speed control device 1 2 0 as the speed of the lower pinch roll 1 0 5 a slow only ⁇ than the plate speed V s
  • the speed control device 1 2 0 measure the actual torque ⁇ of the lower pinch roll 105a using the torque detector 118, while pressing the strip S, with the upper pinch roll 105b.
  • the actual torque T is T.
  • the above value is assumed. Therefore, strip S, The state can be reliably held by the pinch roll 105 for winding on the upstream side. In this state, the preceding strip S! Make a cut at the tail end.
  • the strip is wound by the mandrel 107 of the downstream winding device 104
  • the strip is wound by the mandrel 107 of the upstream winding device 101.
  • the present invention can be applied to a case in which is wound.
  • FIG. 4 schematically shows a portion of the continuous hot rolling line on the downstream side of the strip shear.
  • a finishing mill (not shown) is used. . ) Is cut into a predetermined length with a stripper 15, and the preceding strip S, is taken up by a winding pinch roll 1 disposed on the exit side of the stripper 15.
  • the mandrel at the winding end position (the second mandrel 2 in the figure) at the winding end position via 7 and the trailing strip S 2 at the winding start position via the winding pinch roll 17.
  • the case of winding by the first mandrel 1 is taken as an example.
  • the second mandrel 2 located at the winding end position includes a motor 3 2 for rotating and driving the mandrel 2 as a means for pulling the strip wound around the mandrel 2 with a predetermined winding tension.
  • the torque detector 34 detects the torque of the motor, and the motor 32 is feedback-controlled so that the detected torque value obtained by the torque detector 34 matches the target torque value.
  • the torque detection device 36 that maintains the tension of the motor constant, the pilot generator (PLG) 38 that detects the rotation state of the motor 32, and the speed detection value obtained by the A speed control device 40 that performs feedback control of the motor 32 so as to match the speed.
  • the first mandrel 1 located at the winding start position also serves as a means for pulling the strip wound around the mandrel 1 with a predetermined winding tension.
  • the torque detector 33 that detects the torque of 1 and the motor 31 are fed back and stripped so that the detected torque value obtained by the torque detector 33 matches the target torque value.
  • the torque detection device 35 maintains the tension of the motor constant
  • the pilot generator (PLG) 37 detects the rotational state of the motor 31 and the speed detection value obtained by the pilot generator 37.
  • the take-up pinch roll 17 has a speed obtained by a pilot generator 42 and a pilot generator 42 detecting the rotation state of the motor 41 of the lower pinch roll 17a.
  • the stripping S after cutting has a winding pinch because V P > V s between the strip shear 5 and the winding pinch roll 17.
  • force acts to pull the toward the downstream side by the roll 1 7
  • force acts to pull the downstream side by the mandrel 2 for a V m> V P of between the ⁇ pinch rolls 1 7 and the mandrel 2.
  • the leading strip is It is possible to prevent the plate from being damaged caught by the leading end of the downstream side plate moth I de 1 3 at the branch position between the pass line and the downstream pass line P 2, further, V P> V s and a winding since the feed speed V P of the pinch rolls 1 7 is the speed set to be faster than the conveying speed V s of the trailing strip S 2, the pinch roll roll-up the tip of Kogyosu Bok lip S 2
  • the luggage can be prevented at the entrance of 1 mm.
  • the actual value can be obtained from the target speed of the mandrel 2 immediately before cutting or the opening speed of the finishing mill, and the above condition is satisfied based on the actual value of the sheet speed V s.
  • V m and V P may be set as described above.
  • the strip can be tensioned by the finishing mill and the mandrel 2 until the above cutting is performed, and the winding control by the mandrel 2 controls the winding torque up to that point. Is preferred.
  • the feedback control of the motor 32 is performed so that the detected torque value of the motor 32 obtained by the torque detector 34 matches the target torque value, and the tension of the strip is maintained constant.
  • strip S! Shortly after cutting the tail end, the mandrel 2 is decelerated to stop rotation while holding the strip S wound up in a coil shape with the wrapper roll 19. After the rotation stops, remove two coils of strip S, from the mandrel.
  • strip S! After the cutting, the tension cannot be applied between the finishing mill and the mandrel 2, so if the winding control by the mandrel 2 is switched from the torque control to the speed control after cutting, Until step S is performed, tension is applied to strip S] by torque control, and strip S! Can be wound on a tile, and after cutting, Strip S!
  • the winding speed can be set to V m> V p> V s as described above in. W
  • winding control of the mandrel 2 may be switched from torque control to speed control in advance before the preceding strip S, 5 is cut by the strip shear 5.
  • FIGS. a method of winding a strip according to a third embodiment of the present invention will be described with reference to FIGS.
  • this embodiment is applicable to the first and second embodiments, a case where the present embodiment is applied to the first embodiment will be described as an example. Therefore, the same parts as those in the first embodiment are denoted by the same reference numerals with reference to FIG. 1 and the description thereof is omitted.
  • the target plate speed V P2 of the winding pinch roll 105 is set to a value smaller than the set winding speed V m , that is, the plate speed of the preceding strip S, after cutting.
  • the motor 11 ⁇ (drive device) of the lower pinch roll 105 a of the winding pinch roll 105 generates torque on the side that reduces the speed of the winding pinch roll 105. Therefore, after cutting, the load torque of the motor 1 17 changes from the forward rotation direction to the reverse rotation direction.
  • the trailing string Tsu pinch roll 1 0 5 tip of flop S 2 is the winding in ⁇ Muma 0.3 seconds since extremely short as about, as described above, the tip of the trailing strip S 2 is the winding when the rotational speed of the pinch rolls 1 0 5 roll-up is slower than the trailing string-up S 2 plate velocity V s
  • the strip feed speed of the take-up pinch roll 105 becomes slower than the plate speed of the succeeding strip S, as shown in FIG. However, the leading end of the trailing strip S 2 will be loose on the entry side of the winding pinch roll 5.
  • the motor 1117 which is the drive device of the winding pinch roll 105, is provided with a torque limit Tmax (Nm) on the reduction side, and the speed control device 120 the load torque of the motor 1 1 7 is controlling the motor Isseki 1 1 7 so as not to exceed the Bok Rukuri mission-Bok T max deceleration side.
  • Tmax Nm
  • the speed control device 120 the load torque of the motor 1 1 7 is controlling the motor Isseki 1 1 7 so as not to exceed the Bok Rukuri mission-Bok T max deceleration side.
  • the torque limit T max can be determined in advance as follows.
  • FIG. 5 shows a state in which the preceding strip S i is pressed by the pinch roll 105.
  • the plate speed V s of the preceding strip S is lower than the lower pinch roll 1 Since the set plate speed V P 2 of 0 5 a is greater than that of the lower pinch roll 1 0 5 a, only the force F (N) is applied from the preceding strip S, and the motor 11 1 1 opposes this.
  • the force that the lower pinch roll 105a receives from the preceding strip S i is F (t) (N)
  • the torque generated by the motor 117 is T M (t) ( N ⁇ m)
  • the lower pinch roll 105 a has an angular velocity of ⁇ 2 (radZ sec)
  • the motor 1 1 17 has an angular velocity of ⁇ !
  • ⁇ ⁇ ,, ⁇ t 2 are the lower pinch at time, t 2, respectively.
  • the angular velocity of the roll 105a. (1 6), the prior scan Bok lip S, the ⁇ tail from leaves the pinch opening Ichiru 1 0 5 for ⁇ , the pinch roll 1 0 5 tip of the trailing strip S 2 is the winding Until it is filled, it is F (t) 20.
  • the sign of the change amount ⁇ is deceleration in the case of-, and acceleration in the case of +.
  • V (, ⁇ 0 + ⁇ ⁇
  • Trailing strip S 2 Transport speed V s at the tip, moment of inertia J between motor 11 1 and gear 22, Moment of inertia between lower pinch roll 105 a and gear 22 1 J 2, the lower pinch roll diameter 0, reduction ratio i, the set angular velocity omega [rho] 2 of the lower pinch roll 1 0 5 a are known in advance, also the tail end of the preceding string-up is passed through the pinch roll 1 0 5 for ⁇ take credit after Gyosu Bokuri Tsu for the time t 2 until the earlier end of the flop S 2 is Komu seen ⁇ to pinch roll 1 0 5 for ⁇ , preceding the scan and the conveying speed V s of the trailing string-up S 2 Since the relationship with the winding speed V m of the trip S, is known in advance, the value of T ma that satisfies the above equation (20-4) may be set.
  • the winding pinch roll 105 will be cut after the strip is cut.
  • the target winding speed V m downstream winding device 1 0 4 set winding speed
  • ⁇ pinch rolls 1 0 5 Target plate speed V Based on the speed difference from p2
  • the load torque on the decelerating side of the motor 1 17 does not become excessive, and immediately after the leading end of the preceding strip S, has passed through the winding pinch roll 105, the winding pinch roll 10 rotational speed of 5 does not become smaller than the plate velocity V s of the trailing strip S 2.
  • a stable threading and winding is performed by applying tension to the strip between the finishing mill and the mandrel.
  • the means for imparting tension is generally based on the tension standard applied to the strip when winding, that is, according to the winding temperature conditions during winding and the steel type of the strip to be wound.
  • the strip sent from the finishing mill is cut and wound around multiple mandrels alternately, so from the end of winding per mandrel to the start of winding of the next material.
  • the coil (strip) after winding must be removed in a very short time, and preparation for the next winding must be completed in a short time. For this reason, it is necessary to stop the rotation of the mandrel after winding in a short time, but before the winding is completed, the wrapper roll (holding roll) is brought into contact with the surface of the strip wound in a coil shape.
  • the rubber roll generates torque that hinders rotation of the mandrel during winding, and the mandrel itself is decelerated. As a result, the strip is loosened between the wrapper roll and the pinch roll, causing a phenomenon that the strip is loosened.
  • the inner diameter of the coil is a (m)
  • the outer diameter is b (m)
  • the tension acting on the strip is T (KN)
  • the torque generated by the mandrel is T MD (KNm)
  • the inertia of the coil is When the force is I c and the angular velocity is ⁇ (rad / s), the kinetic equation for the coil is expressed as follows.
  • a strip is cut with a strip shear 5.
  • the rotation control of the motor 132 of the mandrel 2 at the winding end position is switched from the torque control to the rotation speed control.
  • the operation may be switched to the rotation speed control at the timing of operating the strip shear 5, or when the strip is cut by the shear 5 while the torque control of the mandrel 2 is being performed, Since the tension applied to the strip is released and the rotation speed of the mandrel increases, an upper limit value is set for the rotation speed, and the speed control is automatically performed when the actual rotation speed reaches the above value. May be switched to.
  • the wrapper roll 19 is equally spaced along the outer circumference of the coil, and is installed so that it can advance and retreat with respect to the mandrel 2 via a hydraulic cylinder equipped with a hydraulic pump and a servo valve (both not shown). In addition, it can be rotationally driven by a driving source (not shown). In this embodiment, at the time of the cutting, the mandrel 2 is switched to the rotation speed control, and then the wrapper roll 19 is brought into contact with the outer peripheral surface of the coil to control the coil.
  • the wrapper roll 19 also functions as a guide for the strip when the mandrel 2 starts winding the strip.
  • the relative position of the wrapper mouth 19 with respect to the coil may be grasped by a position detector (not shown), and the coil may be contacted with high accuracy.
  • the torque control of the mandrel 2 of the coiler is continued as before until the winding of the strip is completed, and the torque control of the mandrel 2 is performed immediately before the winding is completed, in accordance with the cutting of the strip.
  • the actual change of the rotation speed (plate speed: mpm) and torque of the mandrel 2 were measured before and after switching to the control.
  • the rotation speed of the mandrel 2 be faster than the moving speed of the preceding strip S ,. This is because when the mandrel 2 is switched from torque control to rotational speed control, the target of the speed control value is set somewhat faster than the actual speed at that time, so that the mandrel 2 pulls the strip. Because you can do it.
  • the mandrel 2 can make the wrapper roll 19 contact the coil during the speed control, and the wrapper roll 19 can quickly start the braking operation of the rotation of the coil.
  • the mandrel 2 is torque-controlled so that the strip wound around the mandrel 2 is pulled at a predetermined winding tension. Winding up. Thereafter, the strip is cut by the stripper_5.
  • the torque control of the mandrel 2 is continued even after the cut. After the cutting, the winding is continued with the strip being tensioned by the pinch rolls 17 and the mandrel 2.
  • the tension set value should be increased by 4 F or more.
  • a strip winding method according to a fifth embodiment of the present invention will be described with reference to FIGS.
  • this embodiment is applicable to the first and second embodiments, here, instead of the pressing force setting by the compensating pressing force setting device 124 of the first embodiment, the present embodiment is applied.
  • the case where the embodiment is applied is taken as an example. Therefore, the same parts as those in the first embodiment are denoted by the same reference numerals with reference to FIG. 1 and the description thereof is omitted.
  • the downstream winding device for thin strips 104 If the pressing force of the strip by the upper pinch roll 105 b is not appropriate when the offset angle of the pinch roll 105 for upstream winding is changed, the downstream winding device for thin strips 104 The tail end of the preceding strip S i cannot be sufficiently clamped by the upstream winding pinch roll 105, so that the tail end of the preceding strip S i is wound upstream. There is a danger that the tail strip may be cut off by hitting the triangular gate 1 2 8 when passing through the strip 5, and in the case of a thick strip, the following strip S 2 is taken up by the upstream winding device 10. In some cases, normal induction to 1 cannot be performed.
  • the winding pinch roll on the stripper exit side is designed to prevent the tail end of the strip from being torn and to optimize the bending direction of the following strip. Set the appropriate pushing force of. Also, make sure that the leading end of the following strip does not get stuck in the winding pinch roll and cause a failure.
  • FIG. 14 shows a state in which the lower pinch roll 105a is retracted upstream by an offset amount with respect to the upper pinch opening 105b.
  • FIG. 15 shows a state in which the lower pinch roll 105a is offset, and then the upper pinch roll 105b is pressed down with the pressing force P.
  • the product P ⁇ ⁇ of the pressing force P of the pinch roll 105 and the vertical displacement ⁇ of the pinch opening 105 generated by the pressing force P is the amount of work due to the pressing force ⁇ .
  • M B 2 MB ⁇ (la / R L) + (1 b / Ru) ⁇ ⁇ (2 3)
  • M B can be represented by the following formula (2 4).
  • the yield stress of the strip is ⁇ B
  • the thickness of the strip is t
  • the width of the strip is w.
  • equation (2 3) is expressed by the following equation (2 5). From equations (2 5) and (2 4), the following equation (2 6) holds P ⁇ x— F ⁇ ⁇ u
  • the displacement ⁇ and Au can be calculated geometrically, and the strip yield stress ⁇ ⁇ is a value determined according to the material, and the strip thickness t The width W is determined by the processing material. Therefore, the rotation speed of the winding device and the pinch opening
  • the most appropriate pressing force P can be calculated by determining the strip tension F from the rotation speed of the tool.
  • the pushing force of the winding pinch nozzle is determined by the above equation (26). The value was set to a value or more.
  • Fig. 12 and Fig. 13 show the actual force chart and the chart of the oil injection command for the slicing that pushes down the pinch roll.
  • Fig. 12 shows the case where the pressing force is not set in this embodiment.
  • FIG. 13 shows an example of the present embodiment.
  • the pressing force suddenly drops to a quality load state when the preceding strip comes off the pinch roll, and when it drops, as shown in Fig. 12, the cylinder oil injection command changes the direction to maintain the pressing force. To operate the pinch roll in the tightening direction. Therefore, there is a possibility that the subsequent strip will be defectively inserted. Even if there is no misfeeding, if the trailing strip enters the pinch roll, the pressing force rises rapidly and then recovers to the set value, and the cylinder oil injection command activates the pinch roll in the opening direction. Hunting as an overaction.
  • Fig. 13 shows that the pinch roll cap is held constant until the leading strip comes off the pinch roll after the pressing force is set and the following strip enters the pinch roll.
  • the one-point valve is closed and the oil injection is held, so the cylinder oil injection command remains constant. Therefore, there is no occurrence of a failure in the following strip.
  • the present invention it is possible to prevent the preceding strip from being loose on the exit side of the winding pinch opening and to prevent the leading end of the following material from being wound. An effect is obtained in which it is possible to prevent looseness on the entrance side of the pinch roll. Further, when the present invention is applied to a hot rolling line equipped with a carousel-type winding device, the tail end of the strip wound on the mandrel via a winding pinch roll is set to the above-mentioned position.
  • the tail end of the strip wound on the downstream mandrel via the second winding pinch roll is strip sheared.
  • the torque of the lower pinch roll is reduced by the upper pinch roll of the first winding pinch roll. Press the strip until the actual value reaches a predetermined set value, and set the pressing force at this time to the set pressing force of the upper pinch roll against the strip when offsetting Is stored on the downstream mandrel. Since the tail end of the rip can be satisfactorily sandwiched by the first winding pinch roll, the slip between the strip tail end and the upstream winding pinch roll can be reliably eliminated. The effect is obtained
  • the pressing force of the upper pinch roll can be set to the most appropriate value, so that the tail end of thin strips or poor guiding of the thick strip to the winding device can be prevented. This has the effect of preventing it.
  • the winding control of the strip by the mandrel is switched from the torque control to the rotation speed control. Hold down the mandrel against the lip to stop the rotation of the mandrel, or increase the tension of the strip before finishing the winding of the strip by the mandrel.
  • the pressing roll is pressed against the strip which is then wound into a coil, and the rotation of the mandrel is stopped. Deceleration can be prevented, and winding defects such as loose winding of the outer coil and telescoping can be avoided. Presser mouth when stopping the rotation of the I Le - lifting Le is the braking force Therefore, the effect that the rotation of the coil can be stopped in a short time can be obtained.
  • the winding is performed.
  • the torque limit on the decelerating side of the drive device for the winding pinch roll so that the peripheral speed of the pinch roll for winding is faster than the conveying speed of the following material, bending at a large plate thickness is possible. Even in the case of a strip having high rigidity, an effect is obtained in which the trailing material can be prevented from loosening on the entrance side of the winding pinch roll.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Ropes Or Cables (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Windings For Motors And Generators (AREA)
  • Winding Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

La présente invention concerne un procédé d'enroulement de bandes dans lequel afin d'éviter que la bande précédente ne traîne à la sortie des galets pinceurs d'enroulement et d'empêcher la partie d'extrémité avant du matériau suivant de traîner sur le côté entrée des galets pinceurs d'enroulement, on coupe une bande à la sortie du laminoir à une longueur prédéterminée au moyen de cisailles de bande (102) et la bande ainsi coupée est enroulée sur le mandrin (107) du dispositif enrouleur (104) à travers les galets pinceurs d'enroulement (105) prévus à la sortie des cisailles de bandes (102), la vitesse périphérique des galets pinceurs d'enroulement (105) après que la partie arrière de la bande à être enroulée sur le mandrin (107) à travers les galets pinceurs d'enroulement (105) ait été coupée par les cisailles de bandes (102) étant supérieure à la vitesse à laquelle le matériau suivant est immédiatement transféré après la coupe et inférieure à la vitesse d'enroulement à laquelle la bande est enroulée sur le mandrin (107).
PCT/JP1999/005198 1998-03-27 1999-09-22 Procede d'enroulement de bandes Ceased WO2000058039A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE69928559T DE69928559T2 (de) 1999-03-25 1999-09-22 Verfahren zum wickeln von band
US09/673,954 US6301946B1 (en) 1998-03-27 1999-09-22 Strip coiling method
EP99944792A EP1121994B1 (fr) 1999-03-25 1999-09-22 Procede d'enroulement de bandes
AT99944792T ATE310594T1 (de) 1999-03-25 1999-09-22 Verfahren zum wickeln von band
CA002332953A CA2332953C (fr) 1999-03-25 1999-09-22 Procede d'enroulement de bandes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11082074A JP2000271641A (ja) 1999-03-25 1999-03-25 ストリップの巻取方法
JP11/82074 1999-03-25

Publications (1)

Publication Number Publication Date
WO2000058039A1 true WO2000058039A1 (fr) 2000-10-05

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PCT/JP1999/005198 Ceased WO2000058039A1 (fr) 1998-03-27 1999-09-22 Procede d'enroulement de bandes

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EP (1) EP1121994B1 (fr)
JP (1) JP2000271641A (fr)
KR (1) KR100521953B1 (fr)
CN (1) CN1123407C (fr)
AT (1) ATE310594T1 (fr)
CA (1) CA2332953C (fr)
DE (1) DE69928559T2 (fr)
WO (1) WO2000058039A1 (fr)

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DE10208964A1 (de) * 2002-02-28 2003-09-18 Sms Demag Ag Umlenkeinrichtung für ein Band in einer Haspelanlage
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JP2000271641A (ja) 2000-10-03
CA2332953C (fr) 2004-08-24
EP1121994B1 (fr) 2005-11-23
KR100521953B1 (ko) 2005-10-14
CN1123407C (zh) 2003-10-08
ATE310594T1 (de) 2005-12-15
EP1121994A4 (fr) 2003-05-28
DE69928559D1 (de) 2005-12-29
EP1121994A1 (fr) 2001-08-08
CA2332953A1 (fr) 2000-10-05
DE69928559T2 (de) 2006-06-01
CN1303323A (zh) 2001-07-11
KR20010043743A (ko) 2001-05-25

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