CN110745596A - Device and method for controlling unwinding tension of thin copper strip after cold continuous rolling - Google Patents

Device and method for controlling unwinding tension of thin copper strip after cold continuous rolling Download PDF

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Publication number
CN110745596A
CN110745596A CN201911210247.5A CN201911210247A CN110745596A CN 110745596 A CN110745596 A CN 110745596A CN 201911210247 A CN201911210247 A CN 201911210247A CN 110745596 A CN110745596 A CN 110745596A
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China
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tension
copper strip
stage
thin copper
setting
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CN110745596B (en
Inventor
黄程林
刘建新
文志凌
孙来保
杨建红
陈剑
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Anhui Chujiang High Precision Copper Strip Co ltd
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Anhui Truchum Advanced Materials And Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H16/00—Unwinding, paying-out webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/182—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations
    • B65H23/1825—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations and controlling web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/182—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations
    • B65H23/185—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations motor-controlled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
    • B65H23/1955—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations and controlling web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
    • B65H23/198—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations motor-controlled (Controlling electrical drive motors therefor)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
    • B65H26/04—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs for variation in tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to predetermined lengths of webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to a predetermined diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/173—Metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Control Of Metal Rolling (AREA)

Abstract

The invention discloses a device and a method for controlling the uncoiling tension of a thin copper strip after cold continuous rolling, belonging to the field of tension control and comprising the following steps: the pressure sensor on the tension roller and the encoders on the meter roller, the left uncoiler and the right coiler feed detected data back to the tension system; calculating the radius of the left and right rolls of copper strips by utilizing the linear velocity of the copper strips and the angular velocity on the left uncoiler and the right coiling machine; the tension system is provided with a plurality of sections of tension gradients according to the length of the copper strip, and the tension system is matched with a tension gradient formula according to the running distance of the copper strip, so that the theoretical ideal tension required by the copper strip at the running distance is obtained; after the tension system compares theoretical ideal tension with real-time tension, the rotation speed and the torque of the left uncoiler and the right coiler are controlled, and then a left linear speed and a right linear speed are formed to complete tension regulation control of the section.

Description

Device and method for controlling unwinding tension of thin copper strip after cold continuous rolling
Technical Field
The invention relates to the field of tension control, in particular to a device and a method for controlling the uncoiling tension of a thin copper strip after cold continuous rolling.
Background
The original uncoiler adopts constant tension control during tension control, tension adjustment is manual control in the uncoiling process, and the tension is not high in adjustment precision along with the coil diameter, so that the deviation and adhesion phenomena of the strip are easy to occur during coiling of the strip, and the product percent of pass is influenced.
The thin copper strip is more obviously deviated and adhered in the unwinding process due to the influence of the self performance, the thickness, the length and other size factors of the thin copper strip, the scrappage of the thin copper strip is constantly increased and not reduced every month in the actual production process due to adhesion and deviation of the thin copper strip caused by poor tension control, and the waste of resources and labor cost are greatly caused.
Disclosure of Invention
Technical problem to be solved by the invention
The invention aims to overcome the defect that the thin copper strip is easy to deviate and adhere in the unwinding process in the prior art, and provides a tension control device and method for unwinding the thin copper strip after cold continuous rolling.
Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a tension control device for loosening a thin copper strip after cold continuous rolling, which comprises a tension roller, a meter roller, a balance roller, a left uncoiling machine, a right coiling machine and a tension control system, wherein a pressure sensor is arranged below the tension roller, an encoder is arranged on the meter roller, the motors of the left uncoiling machine and the right coiling machine are respectively provided with an encoder, and in addition, the encoders on the meter roller and the tension control system, and the encoders on the motors of the left uncoiling machine and the right coiling machine and the tension control system are respectively connected through signals;
wherein, tension control system includes: a data calculation unit: the device is used for integrating data fed back by a pressure sensor below a tension roller, an encoder on a meter roll, an encoder on a left uncoiler motor and an encoder on a right coiler motor, then obtaining real-time tension SZ of the copper strip, obtaining the real-time linear velocity of the copper strip at the meter roll through internal calculation, and then combining the real-time linear velocity of the copper strip with the angular velocity on the left uncoiler motor and the angular velocity on the right coiler motor respectively so as to calculate the estimated radius of the left and right coiled copper strips;
a tension gradient control unit: automatically matching a corresponding tension gradient formula according to the copper strip running distance YJ detected by the metering roller in real time, and further obtaining a theoretical ideal tension LZ required by the copper strip at the running distance YJ according to a corresponding single-stage theoretical ideal tension LZ variation formula;
a data comparison unit: comparing the real-time tension SZ with the theoretical ideal tension LZ according to data fed back by the data calculation unit and the tension gradient control unit;
a tension adjusting unit: and controlling the rotating speed and the torque of the left uncoiler and the rotating speed and the torque of the right coiler according to the data fed back by the data comparison unit so as to form a left and right linear speed difference, and accordingly completing tension adjustment control in the length interval of the single-section copper strip in sequence.
As a further aspect of the present invention, the tension gradient control unit includes a single-stage tension gradient control unit and a parameter setting unit;
wherein, the single-stage ideal tension LZ change formula in the single-stage tension gradient control unit is as follows:
LZ =（CZ - MZ）*[（MJ-YJ）/（MJ-CJ）]+MZ
initial tension: CZ; target tension: MZ; theoretical ideal tension: LZ; initial distance: CJ; target distance: MJ; the running distance is as follows: YJ;
the parameter setting unit is used for manually inputting known parameters of the initial tension CZ, the initial distance CJ, the target distance MJ and the target tension MZ.
The invention discloses a method for controlling the uncoiling tension of a thin copper strip after cold continuous rolling, which is characterized by comprising the following steps of:
the method comprises the following steps: (1) detecting the real-time tension SZ of the copper strip by using a pressure sensor below the tension roller;
(2) detecting the rotating angular speed of the meter roller in real time by using an encoder on the meter roller, and simultaneously recording the number of turns of the meter roller by using the encoder so as to obtain the running distance YJ of the copper strip;
(3) encoders on a left uncoiler motor and a right coiler motor respectively detect angular velocities on the left uncoiler motor and the right coiler motor;
meanwhile, the pressure sensor and the encoder feed back the detected data to the tension control system in real time;
step two: the tension control system obtains the real-time linear velocity of the copper strip at the meter roller through internal calculation according to the feedback data, and then the real-time linear velocity of the copper strip is respectively combined with the angular velocity on the motor of the left uncoiler and the angular velocity on the motor of the right coiler, so that the estimated radius of the left and right coiled copper strips is calculated;
step three: the tension control system is internally provided with a multi-section tension gradient control formula of the same strip according to the total length of the strip of the copper strip, and the theoretical ideal tension LZ matched with the coiling running distance YJ of the copper strip is calculated through the formula, wherein the metering roller feeds the running distance YJ of the copper strip detected in real time back to the tension control system in the control process, the tension control system automatically matches the corresponding tension gradient formula through closed-loop control, and then the theoretical ideal tension LZ required by the copper strip at the running distance YJ is obtained according to the corresponding single-section theoretical ideal tension LZ change formula;
and fourthly, the tension control system controls the rotation speed and the torque of the left uncoiler and the rotation speed and the torque of the right coiler to form a left and right linear speed difference through the estimated radius of the copper strip coil and the theoretical ideal tension LZ data fed back in the second step and the third step, and then comparing the theoretical ideal tension LZ with the real-time tension SZ, so as to complete tension adjustment control in the length interval of the single-section copper strip in sequence.
As a further aspect of the present invention, the single stage theoretical ideal tension LZ variation formula is as follows:
LZ =（CZ - MZ）*[（MJ-YJ）/（MJ-CJ）]+MZ
initial tension: CZ; target tension: MZ; theoretical ideal tension: LZ; initial distance: CJ; target distance: MJ; the running distance is as follows: YJ;
meanwhile, the initial tension CZ, the initial distance CJ, the target distance MJ and the target tension MZ are known parameters set through a tension control system, and the running distance YJ is the running length of the copper strip obtained by recording the number of turns of the rice roller.
As a further aspect of the present invention, when the unwound copper tape is a thin copper tape, the thickness of the thin copper tape is 0.1mm, and the length of the thin copper tape is 10000m, the specific tension gradient is as follows:
in the first stage, setting the initial tension CZ to be 2.5KN, and setting the running distance YJ interval of the thin copper strip to be 0-4000 m;
in the second stage, setting the initial tension CZ to be 0.35 KN, and setting the running distance YJ interval of the thin copper strip to be 4000-7000 m;
in the third stage, setting the initial tension CZ to be 0.2 KN, and setting the running distance YJ interval of the thin copper strip to be 7000-10000 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.1 KN.
As a further aspect of the present invention, when the unwound copper tape is a thin copper tape, the thickness of the thin copper tape is 0.1mm, and the length of the thin copper tape is 3000m, the specific tension gradient is as follows:
in the first stage, setting the initial tension CZ to be 2.5KN, and setting the running distance YJ interval of the thin copper strip to be 0-1000 m;
in the second stage, setting the initial tension CZ to be 0.8 KN, and setting the running distance YJ interval of the thin copper strip to be 1000-2000 m;
in the third stage, setting the initial tension CZ to be 0.6 KN, and setting the running distance YJ interval of the thin copper strip to be 2000-3000 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.4 KN.
As a further aspect of the present invention, when the unwound copper tape is a thin copper tape, the thickness of the thin copper tape is 0.15mm, and the length is 8500m, the specific tension gradient is as follows:
in the first stage, setting the initial tension CZ to be 3KN, and setting the running distance YJ interval of the thin copper strip to be 0-3300 m;
setting the initial tension CZ to be 0.4 KN and the running distance YJ interval of the thin copper strip to be 3300-6000 m in the second stage;
in the third stage, setting the initial tension CZ to be 0.25 KN, and setting the running distance YJ interval of the thin copper strip to be 6000-8500 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.1 KN.
As a further aspect of the present invention, when the unwound copper tape is a thin copper tape, the thickness of the thin copper tape is 0.15mm, and the length of the thin copper tape is 2500m, the specific tension gradient is as follows:
in the first stage, setting the initial tension CZ to be 3KN, and setting the running distance YJ interval of the thin copper strip to be 0-800 m;
in the second stage, setting the initial tension CZ to be 0.85 KN, and setting the running distance YJ interval of the thin copper strip to be 800-1600 m;
in the third stage, setting the initial tension CZ to be 0.65 KN, and setting the running distance YJ interval of the thin copper strip to be 1600-2500 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.45 KN.
Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) the invention relates to a tension control device and a method for uncoiling a thin copper strip after cold continuous rolling, which are summarized by working experience of an applicant for many years, and a plurality of sections of tension gradients are arranged according to the length of the strip of the copper strip according to the specific conditions of the performance and the thickness of the copper strip so as to adapt to the tension control requirement of each section, and through the arrangement of the plurality of sections of tension gradients, the problem of strip deviation can not occur when each independent operating distance section is curled, meanwhile, the problem of adhesion of the strip of the front section can not occur when the tension control of the next operating distance section of the strip is performed, namely, the problem of adhesion of the strip of the first operating distance section can not occur when the tension control of the second operating distance section is performed, and the problem of adhesion of the strip of the first operating distance section and the strip of the second operating distance section can not occur when the tension control of the third operating distance section is performed, and so on.
(2) The invention relates to a tension control device and method for unwinding of a thin copper strip after cold continuous rolling, wherein a balance roller is arranged between a tension roller and a left uncoiler and at a position close to the tension roller, the resultant force direction of pressure applied to the tension roller by the copper strip can be just aligned to a pressure sensor below the tension roller through the arrangement of the balance roller, and the real-time tension SZ of the copper strip detected by the pressure sensor below the tension roller is more accurate, so that the tension control of unwinding of the copper strip is more accurate, and the problems of deviation and adhesion in the unwinding process of the copper strip are easier to solve.
Drawings
FIG. 1 is a schematic view of a tension control device according to the present invention;
fig. 2 is a block diagram of tension control in the present invention.
Detailed Description
For a further understanding of the present invention, reference will now be made in detail to the following examples and accompanying drawings.
Example 1
As shown in fig. 1 and fig. 2, the tension control device for unwinding of a thin copper strip after cold continuous rolling according to the present embodiment includes a tension roller, a meter roller, a balance roller, a left uncoiler, a right coiler and a tension control system, wherein a pressure sensor is disposed below the tension roller, an encoder is disposed on the meter roller, and encoders are disposed on motors of the left uncoiler and the right coiler;
wherein, tension control system includes: a data calculation unit: the device is used for integrating data fed back by a pressure sensor below a tension roller, an encoder on a meter roll, an encoder on a left uncoiler motor and an encoder on a right coiler motor, then obtaining real-time tension SZ of the copper strip, obtaining the real-time linear velocity of the copper strip at the meter roll through internal calculation, and then combining the real-time linear velocity of the copper strip with the angular velocity on the left uncoiler motor and the angular velocity on the right coiler motor respectively so as to calculate the estimated radius of the left and right coiled copper strips;
a tension gradient control unit: automatically matching a corresponding tension gradient formula according to the copper strip running distance YJ detected by the metering roller in real time, and further obtaining a theoretical ideal tension LZ required by the copper strip at the running distance YJ according to a corresponding single-stage theoretical ideal tension LZ variation formula;
a data comparison unit: comparing the real-time tension SZ with the theoretical ideal tension LZ according to data fed back by the data calculation unit and the tension gradient control unit;
a tension adjusting unit: and controlling the rotating speed and the torque of the left uncoiler and the rotating speed and the torque of the right coiler according to the data fed back by the data comparison unit so as to form a left and right linear speed difference, and accordingly completing tension adjustment control in the length interval of the single-section copper strip in sequence. In addition, the tension gradient control unit comprises a single-section tension gradient control unit and a parameter setting unit;
wherein, the single-stage ideal tension LZ change formula in the single-stage tension gradient control unit is as follows:
LZ =（CZ - MZ）*[（MJ-YJ）/（MJ-CJ）]+MZ
initial tension: CZ; target tension: MZ; theoretical ideal tension: LZ; initial distance: CJ; target distance: MJ; the running distance is as follows: YJ;
the parameter setting unit is used for manually inputting known parameters of the initial tension CZ, the initial distance CJ, the target distance MJ and the target tension MZ.
The method for controlling the uncoiling tension of the thin copper strip after cold continuous rolling comprises the following steps:
the method comprises the following steps: (1) detecting the real-time tension SZ of the copper strip by using a pressure sensor below the tension roller; it can be known from fig. 1 that, the position that just is close to the tension roller between tension roller and left decoiler is provided with a balance roller, it is required to explain that setting up through this balance roller can make the copper strips give the pressure sensor below the tension roller that the resultant force direction of tension roller pressure just aims at the tension roller, and then the real-time tension SZ of copper strips that makes the pressure sensor below the tension roller detect is more accurate to make copper strips loose coil tension control more accurate, the copper strips pine coil in-process off tracking, adhesion problem are changeed and are solved.
(2) Detecting the rotating angular speed of the meter roller in real time by using an encoder on the meter roller, and simultaneously recording the number of turns of the meter roller by using the encoder so as to obtain the running distance YJ of the copper strip;
(3) encoders on a left uncoiler motor and a right coiler motor respectively detect angular velocities on the left uncoiler motor and the right coiler motor;
meanwhile, the pressure sensor and the encoder feed back the detected data to the tension control system in real time;
step two: and the tension control system obtains the real-time linear velocity of the copper strip at the meter roller through internal calculation according to the feedback data, and then the real-time linear velocity of the copper strip is respectively combined with the angular velocity on the motor of the left uncoiler and the angular velocity on the motor of the right coiler, so that the estimated radius of the left and right coiled copper strips is calculated.
Here, it should be noted that: because the radius of the meter roller is a known and fixed parameter, the real-time linear velocity of the copper strip at the meter roller can be obtained according to the relation among the radius, the angular velocity and the linear velocity by combining the known radius parameter with the real-time meter roller rotating angular velocity detected by an encoder on the meter roller.
Step three: the tension control system is internally provided with a multi-section tension gradient control formula of the same strip according to the total length of the strip of the copper strip, and the theoretical ideal tension LZ matched with the coiling running distance YJ of the copper strip is calculated through the formula, wherein the metering roller feeds the running distance YJ of the copper strip detected in real time back to the tension control system in the control process, the tension control system automatically matches the corresponding tension gradient formula through closed-loop control, and then the theoretical ideal tension LZ required by the copper strip at the running distance YJ is obtained according to the corresponding single-section theoretical ideal tension LZ change formula;
and fourthly, the tension control system controls the rotation speed and the torque of the left uncoiler and the rotation speed and the torque of the right coiler to form a left and right linear speed difference through the estimated radius of the copper strip coil and the theoretical ideal tension LZ data fed back in the second step and the third step, and then comparing the theoretical ideal tension LZ with the real-time tension SZ, so as to complete tension adjustment control in the length interval of the single-section copper strip in sequence.
When the running distance YJ of the copper strip reaches the next running distance interval, the tension control system automatically matches the formula of the next tension gradient corresponding to the next running distance interval, and then the tension control of the copper strip at the stage is completed. It should be noted that the copper strips in the first step, the second step, the third step and the fourth step are all thin copper strips.
Specifically, the equation for the variation of the single-stage theoretical ideal tension LZ in this embodiment is as follows:
LZ =（CZ - MZ）*[（MJ-YJ）/（MJ-CJ）]+MZ
initial tension: CZ; target tension: MZ; theoretical ideal tension: LZ; initial distance: CJ; target distance: MJ; the running distance is as follows: YJ; meanwhile, the initial tension CZ, the initial distance CJ, the target distance MJ and the target tension MZ are known parameters set through a tension control system, the real-time tension SZ is the tension detected by a pressure sensor on a tension roller, and the running distance YJ is the running length of the copper strip obtained by recording the number of turns of the rice roller.
The important points to be explained are: in the process of unreeling, the copper belt of inlayer will certainly have pressure at the curling in-process of copper strips outer, if this pressure is too big and then produce the adhesion problem of copper strips layer-to-layer more easily, but if this pressure undersize, the problem of taking the material off tracking in the process of unreeling easily appears, no matter be the adhesion problem of strip layer-to-layer at the in-process of unreeling, still the problem of strip off tracking all can cause the copper strips to protect useless, consequently how balanced copper strips unreel the in-process, the adhesion between the strip layer-to-layer and the off tracking problem of strip are crucial. For the thin copper strip with the thickness range of 0.1-1 mm in the embodiment, how to overcome the problems of adhesion between layers of the strip and deviation of the strip is more difficult, the applicant of the invention summarizes through many years of working experience that a plurality of sections of tension gradients are arranged according to the performance of the copper strip and the specific situation of the thickness of the copper strip according to the length of the strip of the copper strip so as to adapt to the requirement of tension control of each section, and through the arrangement of the plurality of sections of tension gradients, the problem of deviation of the strip cannot occur when each independent operating distance section is curled, and meanwhile, the problem of adhesion of the strip of the front section cannot occur when the tension control of the next operating distance section of the strip is performed, namely, the problem of adhesion of the strip of the first operating distance section cannot occur when the tension control of the second operating distance section is performed, and the problem of adhesion of the first operating distance section, the problem of the strip of the first operating distance section, the tape in the second range of travel creates sticking problems and so on.
Specifically, in this embodiment, when the unwound copper tape is a thin copper tape, the thickness of the thin copper tape is 0.1mm, and the length of the thin copper tape is 10000m, the specific tension gradient thereof is as follows:
in the first stage, setting the initial tension CZ to be 2.5KN, and setting the running distance YJ interval of the thin copper strip to be 0-4000 m;
in the second stage, setting the initial tension CZ to be 0.35 KN, and setting the running distance YJ interval of the thin copper strip to be 4000-7000 m;
in the third stage, setting the initial tension CZ to be 0.2 KN, and setting the running distance YJ interval of the thin copper strip to be 7000-10000 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.1 KN.
When the thickness of the thin red copper strip is 0.1mm and the length is 10000m, according to a single-stage tension real-time theory ideal tension LZ change formula: LZ = (CZ-MZ) [ (MJ-YJ)/(MJ-CJ) ] + MZ, note that: in the first stage, the initial tension CZ is 2.5KN, the initial distance CJ is 0, the target distance MJ is 4000m, the operating distance YJ interval is 0-4000 m, and the target tension MZ in the first stage is equal to the initial tension CZ in the second stage;
in the second stage, the initial tension CZ is 0.35 KN, the initial distance CJ is 4000m, the target distance MJ is 7000m, the running distance YJ interval is 4000-7000 m, and the target tension MZ of the second stage is equal to the initial tension CZ of the third stage;
in the third stage, the initial tension CZ is 0.2 KN, the initial distance CJ is 7000m, the target distance MJ is 10000m, the running distance YJ interval is 7000-10000 m, and the target tension MZ is 0.1 KN.
According to the embodiment, the tension gradient is set to be the above process according to the condition that the thickness of the thin copper belt is 0.1mm and the length of the thin copper belt is 10000m, so that the problems of adhesion and deviation of the thin copper belt in the unwinding process are well solved.
Example 2
This embodiment is different from embodiment 1 in that: when the uncoiled copper strip is a thin copper strip, the thickness of the thin copper strip is 0.1mm, and the length of the thin copper strip is 3000m, the specific tension gradient is as follows:
in the first stage, setting the initial tension CZ to be 2.5KN, and setting the running distance YJ interval of the thin copper strip to be 0-1000 m;
in the second stage, setting the initial tension CZ to be 0.8 KN, and setting the running distance YJ interval of the thin copper strip to be 1000-2000 m;
in the third stage, setting the initial tension CZ to be 0.6 KN, and setting the running distance YJ interval of the thin copper strip to be 2000-3000 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.4 KN.
According to the embodiment, the tension gradient is set to be the above process according to the condition that the thickness of the thin copper belt is 0.1mm and the length of the thin copper belt is 3000m, so that the problems of adhesion and deviation of the thin copper belt in the unwinding process are well solved.
Example 3
This example is different from example 1 in that: when the uncoiled copper strip is a thin copper strip, the thickness of the thin copper strip is 0.15mm, and the length is 8500m, the specific tension gradient is as follows:
in the first stage, setting the initial tension CZ to be 3KN, and setting the running distance YJ interval of the thin copper strip to be 0-3300 m;
setting the initial tension CZ to be 0.4 KN and the running distance YJ interval of the thin copper strip to be 3300-6000 m in the second stage;
in the third stage, setting the initial tension CZ to be 0.25 KN, and setting the running distance YJ interval of the thin copper strip to be 6000-8500 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.1 KN.
In the embodiment, the tension gradient is set to be the above process according to the condition that the thickness of the thin copper belt is 0.1mm and the length is 8500m, so that the problems of adhesion and deviation of the thin copper belt in the unwinding process are well solved.
Example 4
This example is different from example 1 in that: when the uncoiled copper strip is a thin copper strip, the thickness of the thin copper strip is 0.15mm, and the length of the thin copper strip is 2500m, the specific tension gradient is as follows:
in the first stage, setting the initial tension CZ to be 3KN, and setting the running distance YJ interval of the thin copper strip to be 0-800 m;
in the second stage, setting the initial tension CZ to be 0.85 KN, and setting the running distance YJ interval of the thin copper strip to be 800-1600 m;
in the third stage, setting the initial tension CZ to be 0.65 KN, and setting the running distance YJ interval of the thin copper strip to be 1600-2500 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.45 KN.
In the embodiment, the tension gradient is set to be the above process according to the condition that the thickness of the thin copper belt is 0.1mm and the length of the thin copper belt is 2500m, so that the problems of adhesion and deviation of the thin copper belt in the unwinding process are well solved.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims (8)

1. A tension control device for loosening and coiling of a thin copper strip after cold continuous rolling is characterized by comprising a tension roller, a meter rice roller, a balance roller, a left uncoiler, a right coiler and a tension control system, wherein a pressure sensor is arranged below the tension roller, an encoder is arranged on the meter rice roller, encoders are arranged on motors of the left uncoiler and the right coiler, and in addition, the encoders on the meter rice roller and the tension control system, and the encoders on the motors of the left uncoiler and the right coiler and the tension control system are connected through signals;
wherein, tension control system includes: a data calculation unit: the device is used for integrating data fed back by a pressure sensor below a tension roller, an encoder on a meter roll, an encoder on a left uncoiler motor and an encoder on a right coiler motor, then obtaining real-time tension SZ of the copper strip, obtaining the real-time linear velocity of the copper strip at the meter roll through internal calculation, and then combining the real-time linear velocity of the copper strip with the angular velocity on the left uncoiler motor and the angular velocity on the right coiler motor respectively so as to calculate the estimated radius of the left and right coiled copper strips;
a tension gradient control unit: automatically matching a corresponding tension gradient formula according to the copper strip running distance YJ detected by the metering roller in real time, and further obtaining a theoretical ideal tension LZ required by the copper strip at the running distance YJ according to a corresponding single-stage theoretical ideal tension LZ variation formula;
a data comparison unit: comparing the real-time tension SZ with the theoretical ideal tension LZ according to data fed back by the data calculation unit and the tension gradient control unit;
a tension adjusting unit: and controlling the rotating speed and the torque of the left uncoiler and the rotating speed and the torque of the right coiler according to the data fed back by the data comparison unit so as to form a left and right linear speed difference, and accordingly completing tension adjustment control in the length interval of the single-section copper strip in sequence.
2. The device for controlling the uncoiling tension of the thin copper strip after the cold continuous rolling according to claim 1, wherein the tension gradient control unit comprises a single-section tension gradient control unit and a parameter setting unit;
wherein, the single-stage ideal tension LZ change formula in the single-stage tension gradient control unit is as follows:
LZ =（CZ - MZ）*[（MJ-YJ）/（MJ-CJ）]+MZ
initial tension: CZ; target tension: MZ; theoretical ideal tension: LZ; initial distance: CJ; target distance: MJ; the running distance is as follows: YJ;
the parameter setting unit is used for manually inputting known parameters of the initial tension CZ, the initial distance CJ, the target distance MJ and the target tension MZ.
3. A method for controlling the uncoiling tension of a thin copper strip after cold continuous rolling is characterized by comprising the following steps:
the method comprises the following steps: (1) detecting the real-time tension SZ of the copper strip by using a pressure sensor below the tension roller;
(2) detecting the rotating angular speed of the meter roller in real time by using an encoder on the meter roller, and simultaneously recording the number of turns of the meter roller by using the encoder so as to obtain the running distance YJ of the copper strip;
(3) encoders on a left uncoiler motor and a right coiler motor respectively detect angular velocities on the left uncoiler motor and the right coiler motor;
meanwhile, the pressure sensor and the encoder feed back the detected data to the tension control system in real time;
step two: the tension control system obtains the real-time linear velocity of the copper strip at the meter roller through internal calculation according to the feedback data, and then the real-time linear velocity of the copper strip is respectively combined with the angular velocity on the motor of the left uncoiler and the angular velocity on the motor of the right coiler, so that the estimated radius of the left and right coiled copper strips is calculated;
step three: the tension control system is internally provided with a multi-section tension gradient control formula of the same strip according to the total length of the strip of the copper strip, and the theoretical ideal tension LZ matched with the coiling running distance YJ of the copper strip is calculated through the formula, wherein the metering roller feeds the running distance YJ of the copper strip detected in real time back to the tension control system in the control process, the tension control system automatically matches the corresponding tension gradient formula through closed-loop control, and then the theoretical ideal tension LZ required by the copper strip at the running distance YJ is obtained according to the corresponding single-section theoretical ideal tension LZ change formula;
and fourthly, the tension control system controls the rotation speed and the torque of the left uncoiler and the rotation speed and the torque of the right coiler to form a left and right linear speed difference through the estimated radius of the copper strip coil and the theoretical ideal tension LZ data fed back in the second step and the third step, and then comparing the theoretical ideal tension LZ with the real-time tension SZ, so as to complete tension adjustment control in the length interval of the single-section copper strip in sequence.
4. The method for controlling the uncoiling tension of the thin copper strip after the cold continuous rolling according to claim 3, wherein the method comprises the following steps: the single-stage theoretical ideal tension LZ variation formula is as follows:
LZ =（CZ - MZ）*[（MJ-YJ）/（MJ-CJ）]+MZ
initial tension: CZ; target tension: MZ; theoretical ideal tension: LZ; initial distance: CJ; target distance: MJ; the running distance is as follows: YJ;
meanwhile, the initial tension CZ, the initial distance CJ, the target distance MJ and the target tension MZ are known parameters set through a tension control system, and the running distance YJ is the running length of the copper strip obtained by recording the number of turns of the rice roller.
5. The method for controlling the uncoiling tension of the thin copper strip after the cold continuous rolling according to claim 4, wherein the method comprises the following steps: when the uncoiled copper strip is a thin copper strip, the thickness of the thin copper strip is 0.1mm, and the length is 10000m, the specific tension gradient is as follows:
in the first stage, setting the initial tension CZ to be 2.5KN, and setting the running distance YJ interval of the thin copper strip to be 0-4000 m;
in the second stage, setting the initial tension CZ to be 0.35 KN, and setting the running distance YJ interval of the thin copper strip to be 4000-7000 m;
in the third stage, setting the initial tension CZ to be 0.2 KN, and setting the running distance YJ interval of the thin copper strip to be 7000-10000 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.1 KN.
6. The method for controlling the uncoiling tension of the thin copper strip after the cold continuous rolling according to claim 4, wherein the method comprises the following steps: when the uncoiled copper strip is a thin copper strip, the thickness of the thin copper strip is 0.1mm, and the length of the thin copper strip is 3000m, the specific tension gradient is as follows:
in the first stage, setting the initial tension CZ to be 2.5KN, and setting the running distance YJ interval of the thin copper strip to be 0-1000 m;
in the second stage, setting the initial tension CZ to be 0.8 KN, and setting the running distance YJ interval of the thin copper strip to be 1000-2000 m;
in the third stage, setting the initial tension CZ to be 0.6 KN, and setting the running distance YJ interval of the thin copper strip to be 2000-3000 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.4 KN.
7. The method for controlling the uncoiling tension of the thin copper strip after the cold continuous rolling according to claim 4, wherein the method comprises the following steps: when the uncoiled copper strip is a thin copper strip, the thickness of the thin copper strip is 0.15mm, and the length is 8500m, the specific tension gradient is as follows:
in the first stage, setting the initial tension CZ to be 3KN, and setting the running distance YJ interval of the thin copper strip to be 0-3300 m;
setting the initial tension CZ to be 0.4 KN and the running distance YJ interval of the thin copper strip to be 3300-6000 m in the second stage;
in the third stage, setting the initial tension CZ to be 0.25 KN, and setting the running distance YJ interval of the thin copper strip to be 6000-8500 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.1 KN.
8. The method for controlling the uncoiling tension of the thin copper strip after the cold continuous rolling according to claim 4, wherein the method comprises the following steps: when the uncoiled copper strip is a thin copper strip, the thickness of the thin copper strip is 0.15mm, and the length of the thin copper strip is 2500m, the specific tension gradient is as follows:
in the first stage, setting the initial tension CZ to be 3KN, and setting the running distance YJ interval of the thin copper strip to be 0-800 m;
in the second stage, setting the initial tension CZ to be 0.85 KN, and setting the running distance YJ interval of the thin copper strip to be 800-1600 m;
in the third stage, setting the initial tension CZ to be 0.65 KN, and setting the running distance YJ interval of the thin copper strip to be 1600-2500 m;
the target tension MZ of the first stage is equal to the initial tension CZ of the second stage, the target tension MZ of the second stage is equal to the initial tension CZ of the third stage, and the target tension MZ of the third stage is 0.45 KN.
CN201911210247.5A 2019-12-02 2019-12-02 Device and method for controlling uncoiling tension of Bao Tongdai after cold continuous rolling Active CN110745596B (en)

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