CN112872097A - Uncoiling control method and uncoiling control system for cold-rolled steel coil - Google Patents
Uncoiling control method and uncoiling control system for cold-rolled steel coil Download PDFInfo
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- CN112872097A CN112872097A CN202110046054.1A CN202110046054A CN112872097A CN 112872097 A CN112872097 A CN 112872097A CN 202110046054 A CN202110046054 A CN 202110046054A CN 112872097 A CN112872097 A CN 112872097A
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- 239000010960 cold rolled steel Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 56
- 230000008569 process Effects 0.000 claims abstract description 15
- 238000005097 cold rolling Methods 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 12
- 230000002441 reversible effect Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 97
- 239000010959 steel Substances 0.000 abstract description 97
- 238000004519 manufacturing process Methods 0.000 description 15
- 230000037303 wrinkles Effects 0.000 description 11
- 230000008901 benefit Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 241000277275 Oncorhynchus mykiss Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- 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
- B21C47/16—Unwinding or uncoiling
- B21C47/18—Unwinding or uncoiling from reels or drums
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- 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
- B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
- B21C47/3433—Feeding or guiding devices not specially adapted to a particular type of apparatus for guiding the leading end of the material, e.g. from or to a coiler
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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Abstract
The invention discloses an uncoiling control method of a cold-rolled steel coil, which is applied to an uncoiling process section of a cold-rolling subsequent unit, and comprises the following steps: controlling the uncoiler to rotate reversely so that a magnetic belt of the uncoiler detects a first strip head signal of the cold-rolled steel coil; controlling a guide plate table of the uncoiler to ascend and closing a pinch roll according to the first strip head signal; controlling the straightening machine to be started; controlling the uncoiler to rotate forward for a preset time period; judging whether the straightener detects a second strip head signal of the cold-rolled steel coil or not in a preset time period; if the straightener detects a second strip head signal of the cold-rolled steel coil, the uncoiler is controlled to rotate forwards to the straightener; if the straightening machine does not detect a second strip head signal of the cold-rolled steel coil, controlling the uncoiler to stop rotating forwards and controlling the straightening machine to close; the method can timely eliminate the problem that the uncoiler is uncoiled by mistake due to the fact that the steel coil is bundled to cause the strip head to be folded, avoids a large amount of steel from being piled in the pit, and reduces the loss of the strip steel.
Description
Technical Field
The application relates to the technical field of steel cold rolling, in particular to an uncoiling control method and an uncoiling control system for a cold-rolled steel coil.
Background
An uncoiler is one of important devices in the production process of cold-rolled steel strips. In the strip steel cold rolling production line, the quick production rhythm and the smooth uncoiling have great significance in the production efficiency and the product quality of strip steel. The uncoiling of the cold-rolled strip steel is an important component of the strip steel production process, and if the uncoiling of the uncoiler is not smooth, the production efficiency is influenced, and the product quality can be influenced.
After the cold rolling process is completed, the cold rolled steel coil (hard rolled steel coil) is uncoiled again during subsequent annealing and recoiling. However, in the process of uncoiling the cold-rolled steel coil, the head of the steel coil can not normally penetrate into the straightening machine, but the head of the steel coil always falls into a pit below the uncoiling machine along with the forward rotation of the uncoiling machine; due to the lack of effective monitoring measures in the pit, field operators are not easy to find out the situation in time. When the operator finds that the head of the steel coil is released a lot, the uncoiler needs to be manually stopped to rotate, the strip steel falling into the pit is cut off, and the steel coil is accumulated in the pit. Because the pit space under the uncoiler saddle is very deep and narrow, the fallen scrap steel is very difficult to clean, safety accidents are easily caused, a large amount of strip steel is lost, a lot of production time is delayed, and the production efficiency is influenced.
Disclosure of Invention
The invention provides an uncoiling control method and an uncoiling control system for a cold-rolled steel coil, which are used for solving or partially solving the technical problems that uncoiling abnormity of the cold-rolled steel coil cannot be found in time when the cold-rolled steel coil is uncoiled by an uncoiler, and the head of strip steel enters a pit more to cause pit steel stacking accidents, influence on production efficiency and cause strip steel loss.
In order to solve the technical problem, the invention provides an uncoiling control method of a cold-rolled steel coil, which is applied to an uncoiling process section of a cold-rolling subsequent unit, and the uncoiling control method comprises the following steps:
controlling the uncoiler to rotate reversely so that a magnetic belt of the uncoiler detects a first strip head signal of the cold-rolled steel coil;
controlling a guide plate table of the uncoiler to ascend and closing a pinch roll according to the first strip head signal;
controlling the straightening machine to be started;
controlling the uncoiler to rotate forward for a preset time period;
judging whether the straightener detects a second strip head signal of the cold-rolled steel coil or not in a preset time period;
if the straightener detects a second strip head signal of the cold-rolled steel coil, the uncoiler is controlled to rotate forwards to the straightener;
and if the straightening machine does not detect a second strip head signal of the cold-rolled steel coil, controlling the uncoiler to stop rotating forwards and controlling the straightening machine to be closed.
Optionally, the preset time period is 20 seconds to 40 seconds.
Optionally, before controlling the uncoiler to rotate reversely so that the magnetic belt of the uncoiler detects the first strip head signal of the cold-rolled steel coil, the uncoiling control method further includes:
controlling the cold-rolled steel coil to be sleeved on a mandrel of the uncoiler;
and controlling the pressing of a press roller of the uncoiler.
Further, after the pressing of the pressure roller of the uncoiler is controlled, before the uncoiler is controlled to rotate reversely so that the magnetic belt of the uncoiler detects the first strip head signal of the cold-rolled steel coil, the uncoiling control method further comprises the following steps:
the uncoiler is controlled to pause for a first period of time.
Optionally, after controlling the straightener to be started and before controlling the uncoiler to rotate forward for a preset time period, the uncoiling control method further includes:
controlling the uncoiler to pause for a second period of time.
Optionally, after controlling the uncoiler to rotate forward in the straightening machine, the uncoiling control method further includes:
controlling a guide plate table of the uncoiler to retract;
controlling a guide plate table of the uncoiler to swing down;
and continuously controlling the uncoiler to rotate forwards to the straightening machine.
Further, after controlling the uncoiler to rotate positively to the straightener, and before controlling the guide plate table of the uncoiler to retract, the uncoiling control method further comprises the following steps:
controlling the uncoiler to pause for a third time period.
Based on the same inventive concept of the technical scheme, the invention also provides an uncoiling control system of the cold-rolled steel coil, the uncoiling control system is applied to an uncoiling process section of a cold-rolling subsequent unit, and the uncoiling control system comprises:
the uncoiler control module is used for controlling the uncoiler to rotate reversely so that a magnetic belt of the uncoiler detects a first strip head signal of the cold-rolled steel coil; the control device is used for controlling the guide plate table of the uncoiler to ascend and closing the pinch roll according to the first strip head signal;
the straightener control module is used for controlling the straightener to be started;
the uncoiler control module controls the uncoiler to rotate forward for a preset time period;
the straightening machine control module judges whether the straightening machine detects a second strip head signal of the cold-rolled steel coil in a preset time period;
if the straightener detects a second strip head signal of the cold-rolled steel coil, the uncoiler control module and the straightener control module control the uncoiler to rotate forwards to the straightener;
and if the straightening machine does not detect a second strip head signal of the cold-rolled steel coil, the uncoiler control module controls the uncoiler to stop rotating forwards, and the straightening machine control module controls the straightening machine to be closed.
Optionally, before controlling the uncoiler to rotate reversely so that the magnetic belt of the uncoiler detects the first strip head signal of the cold-rolled steel coil, the uncoiler control module is further configured to:
controlling the cold-rolled steel coil to be sleeved on a mandrel of the uncoiler;
and controlling the pressing of a press roller of the uncoiler.
Optionally, after controlling the uncoiler to rotate forwards in the straightening machine, the uncoiler control module is further configured to:
controlling a guide plate table of the uncoiler to retract;
controlling a guide plate table of the uncoiler to swing down;
the uncoiler control module and the straightening machine control module continuously control the uncoiler to rotate forwards to the straightening machine.
Through one or more technical schemes of the invention, the invention has the following beneficial effects or advantages:
the invention provides an uncoiling control method of a cold-rolled steel coil, which controls a guide plate table to ascend, a pinch roll to close and a straightener to open when an uncoiler rotates reversely and a magnetic belt detects a first strip head signal of the steel coil; then, the uncoiler rotates forwards for a preset time period, whether the straightening machine detects a second strip head signal of the steel coil is judged in the preset time period, if the second strip head signal is detected in the preset time period, the steel coil is normally threaded and uncoiled, and the uncoiler is controlled to rotate forwards to the straightening machine; if the second strip head signal is not detected in the preset time period, the situation that the steel coil is not penetrated successfully is shown, the magnetic belt judges the wrinkle at the head of the steel coil to be the strip head of the steel coil by mistake, the uncoiler is controlled to stop rotating forwards at the moment, and the straightening machine is closed; through the judgement of the above-mentioned delay preset time quantum, make the straightener give the signal that the decoiler continues corotation again when contacting belted steel tape head, can in time eliminate and beat the problem that causes the decoiler mistake to open a book because of the coil of strip head fold because of the coil of strip bundling causes, even the steel tape head falls into the pit in the preset time quantum, the pile volume is also few, belted steel warp for a short time, can handle fast, avoided the operation personnel to fail to discover the coil of strip and normally open a book, lead to the accident of piling up a large amount of steel in the pit, the belted steel loss has been reduced, the security of the operation of opening a book and the production efficiency.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a flowchart of an uncoiling control method of a cold-rolled steel coil according to an embodiment of the present invention;
FIG. 2 shows a schematic drawing of an uncoiling process section of a 1420 hood degreasing line according to one embodiment of the invention;
fig. 3 shows a schematic view of an uncoiling control system for a coil of cold rolled steel according to an embodiment of the present invention.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments. Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is a conflict, the present specification will control. Unless otherwise specifically stated, various apparatuses and the like used in the present invention are either commercially available or can be prepared by existing methods.
Researches show that the uncoiling of the steel coil after cold rolling is not smooth, the main reason for pit steel stacking is that the cold-rolled strip steel is thin, the coiling and bundling quality in the last working procedure (cold rolling) is poor, and wrinkles are easy to appear in the range of 0-3 m at the head of the steel coil. When the uncoiler uncoils, the uncoiler is firstly reversed so that a magnetic belt on the uncoiler can absorb a belt head of a steel coil; under normal conditions, when the steel coil strip head has no folds or folds are small, the grating on the magnetic belt absorbs and drives the strip head to operate after detecting the strip head. When the wrinkles of the head of the steel coil are larger and more prominent, the magnetic belt on the uncoiler firstly detects the convex points or convex lines of the wrinkles of the steel coil in the reverse rotation process of the uncoiler, and the magnetic belt does not absorb the head of the steel coil but acquiescently absorbs the head of the steel coil, so that a signal that the magnetic belt already absorbs the head of the steel coil is sent; when a signal that the magnetic belt detects a belt head is received, the uncoiler starts to rotate forward to uncoil; but at the moment, the strip head does not actually penetrate into the straightening machine normally, and then falls into a pit below a saddle of the uncoiler until an operator finds that a large amount of strip steel is lost and the production efficiency is influenced.
Therefore, in order to reduce the adverse effect of wrinkles on uncoiling of the cold-rolled steel coil as much as possible and reduce the adverse effect of pit steel stacking on production efficiency, in an optional embodiment, as shown in fig. 1, an uncoiling control method for the cold-rolled steel coil is provided, and the uncoiling control method is applied to an uncoiling process section of a subsequent cold-rolling unit, and the overall idea is as follows:
s1: controlling the uncoiler to rotate reversely so that a magnetic belt of the uncoiler detects a first strip head signal of the cold-rolled steel coil;
s2: controlling a guide plate table of the uncoiler to ascend and closing a pinch roll according to the first strip head signal;
s3: controlling the straightening machine to be started;
s4: controlling the uncoiler to rotate forward for a preset time period;
s5: judging whether the straightener detects a second strip head signal of the cold-rolled steel coil or not in a preset time period;
s6: if the straightener detects a second strip head signal of the cold-rolled steel coil, the uncoiler is controlled to rotate forwards to the straightener;
s7: and if the straightening machine does not detect a second strip head signal of the cold-rolled steel coil, controlling the uncoiler to stop rotating forwards and controlling the straightening machine to be closed.
Specifically, the control idea of the above scheme is as follows: because the grating on the magnetic belt can not judge whether the detected strip head signal (head signal) of the steel coil strip head is the real steel coil strip head or the steel coil wrinkle; therefore, in the aspect of control of the straightening machine, a delay step sequence for judging whether the straightening machine detects a steel coil strip head signal or not after the uncoiler rotates forward for a preset time is added. If the steel strip head signal is not detected by the straightening machine within the preset time period of forward rotation of the uncoiler, the magnetic belt does not absorb the strip head at the moment, the wrinkle is regarded as the strip head, the strip head of the steel coil is not successfully threaded, and the signals of shutdown of the uncoiler and shutdown of the straightening machine are required to be given at the moment; if the strip head signal of the strip steel is detected within the preset time period of forward rotation of the uncoiler, normal uncoiling is indicated, and the uncoiler is controlled to rotate forwards to the straightener. The uncoiler rotates forwards to the straightening machine, namely the uncoiler keeps rotating forwards continuously, and the straightening machine and the uncoiler rotate forwards synchronously. By the method, the problem that the uncoiler is uncoiled by mistake due to the wrinkles of the head of the steel coil caused by bundling of the steel coil can be solved, even if the uncoiler is uncoiled by mistake, the uncoiler can be stopped automatically in time, a large amount of strip steel cannot be accumulated in a pit, and the loss of the strip steel is reduced.
The preset time period in the scheme is determined according to the actual conditions of different production units and the distance from the uncoiler to the straightener according to the uncoiling speed. Under the normal condition of a common unit, the time from the uncoiler to the straightener of the strip head is ten seconds, so that the optional preset time period is 20 seconds to 40 seconds, preferably 30 seconds. The preset time period is not short enough, otherwise normal threading is judged to be abnormal, and the threading cannot be too long, otherwise more strip steel is accumulated in the pit.
Optionally, at S1: the uncoiling control method comprises the following steps of controlling the uncoiler to rotate reversely so that before a magnetic belt of the uncoiler detects a first strip head signal of the cold-rolled steel coil:
s01: controlling the cold-rolled steel coil to be sleeved on a mandrel of the uncoiler;
s02: and controlling the pressing of a press roller of the uncoiler.
Further, at S02: after controlling the press roller depression of the unwinder, at S1: the uncoiling control method comprises the following steps of controlling the uncoiler to rotate reversely so that before a magnetic belt of the uncoiler detects a first strip head signal of the cold-rolled steel coil:
s03: the uncoiler is controlled to pause for a first period of time.
The pause is for reserving response time for the device, and the selectable range of the first time period is 0.5-2 seconds, preferably 1 second.
Optionally, at S3: after controlling the straightener to be turned on, at S4: before controlling the uncoiler to rotate positively for a preset time period, the uncoiling control method further comprises the following steps:
s31: controlling the uncoiler to pause for a second period of time.
Similarly, the second time period is also reserved response time for the equipment, and the optional range of the second time period is 0.5-2 seconds, preferably 1 second.
Optionally, at S6: after controlling the uncoiler to rotate forwards by the straightener, the uncoiling control method further comprises the following steps:
s61: controlling a guide plate table of the uncoiler to retract;
s62: controlling a guide plate table of the uncoiler to swing down;
s63: and continuously controlling the uncoiler to rotate forwards to the straightening machine.
Further, at S6: after controlling the uncoiler to rotate forward of the straightener, at S61: before controlling the guide plate table of the uncoiler to retract, the uncoiling control method further comprises the following steps:
s60: controlling the uncoiler to pause for a third time period.
Similarly, the second time period is also reserved response time for the equipment, and the optional range of the third time period is 1-3 seconds, preferably 2 seconds.
In the following, the above scheme is applied to the uncoiling process section of an 1420-cover degreasing line in a certain steel mill, and is described with reference to fig. 2 and practical cases:
after the scheme is applied, the control flow of normal uncoiling is as follows:
step 1: starting preparation after the uncoiler coils;
step 2: pressing by a press roller of the uncoiler;
step 3: stopping for 1 second;
step 4: the uncoiler rotates reversely to enable the steel tape winding head to rotate reversely to the top, and the steel tape winding head can be detected by a grating on the magnetic belt;
step 5: when the grating detects the head of the strip steel, the magnetic belt is considered to suck the head of the strip steel, and the guide plate platform of the uncoiler rises;
step 6: closing the pinch roll;
step 7: opening the straightening machine;
step 8: stopping for 1 second;
step 9: the uncoiler rotates forwards;
step 10: delaying for 30 seconds, and detecting the head of the strip steel by the straightening machine;
step 11: controlling the uncoiler to rotate forwards to the straightening machine;
step 12: stopping for 2 seconds;
step 13: retracting the guide plate of the uncoiler;
step 14: a guide plate of the uncoiler is swung down;
step 15: and continuously controlling the uncoiler to rotate forwards to the straightening machine, and ending the uncoiling process.
The control flow of abnormal uncoiling is as follows:
step 1: starting preparation after the uncoiler coils;
step 2: pressing by a press roller of the uncoiler;
step 3: stopping for 1 second;
step 4: the uncoiler rotates reversely to enable the steel tape winding head to rotate reversely to the top, and the steel tape winding head can be detected by a grating on the magnetic belt;
step 5: the grating detects the wrinkles of the head of the strip steel, but the magnetic belt is considered to suck the head of the strip steel, and the guide plate platform of the uncoiler rises;
step 6: closing the pinch roll;
step 7: opening the straightening machine;
step 8: stopping for 1 second;
step 9: the uncoiler rotates forwards;
step 10: delaying for 30 seconds, and detecting no strip steel head by the straightener;
step 11: and controlling the uncoiler to stop rotating forward, closing the straightener and stopping the uncoiling program.
The actual operation process of the control flow is as follows:
1. after the uncoiler is used for coiling, an operator presses a start button, an uncoiling program runs, a press roller of the uncoiler is pressed down, the uncoiler rotates reversely, so that the strip head of the steel coil is reversely rotated to the top and is detected by a grating on a magnetic belt, the strip head is detected by the grating, the strip head is sucked by the magnetic belt, a guide plate platform of the uncoiler rises, and a pinch roller is closed.
2. When the uncoiling program of the uncoiler runs normally, the strip head needs 14 seconds from the uncoiler to the large straightener, the strip head of the strip steel is detected on the straightener within 30 seconds, the straightener is opened, the uncoiler rotates forwards to the straightener, the guide plate of the uncoiler retracts, the guide plate of the uncoiler swings down, the uncoiler rotates forwards to the straightener, and the uncoiling process is finished.
3. And if the strip head of the strip steel is detected by the grating of the straightening machine within 30 seconds, operating the program uncoiler to rotate the straightening machine forwardly.
4. And if the straightener grating does not detect the strip head of the strip steel within 30 seconds, the uncoiler and the straightener are automatically stopped, and the uncoiling procedure is stopped until the uncoiling procedure of the uncoiler is restarted after the treatment of an operator.
Through field application practice, if the uncoiler uncoils by utilizing a control program before improvement, when the strip head of the strip steel is wrinkled and raised, the uncoiler uncoiling is not smooth, so that a large number of steel piling accidents in a pit are caused. After the improved control program provided by the embodiment is used for uncoiling the uncoiler, even if the uncoiler uncoiling unsmooth condition caused by the fact that the strip head of the strip steel is wrinkled is met, the uncoiling speed of the strip head of the uncoiler is 30m/min, the strip steel falling into a pit in 30 seconds is only 15m, the strip steel falling into the pit is less, the stacking is not much, the strip steel is not greatly deformed, the pit is not required to be cleaned by an operator, and the uncoiler is directly started to reversely rotate and is rewound to be cut off.
Generally speaking, the embodiment provides an uncoiling control method of a cold-rolled steel coil, which comprises the steps of controlling a guide plate table to ascend, closing a pinch roll and opening a straightener when an uncoiler rotates reversely and a magnetic belt detects a first strip head signal of the steel coil; then, the uncoiler rotates forwards for a preset time period, whether the straightening machine detects a second strip head signal of the steel coil is judged in the preset time period, if the second strip head signal is detected in the preset time period, the steel coil is normally threaded and uncoiled, and the uncoiler is controlled to rotate forwards to the straightening machine; if the second strip head signal is not detected in the preset time period, the situation that the steel coil is not penetrated successfully is shown, the magnetic belt judges the wrinkle at the head of the steel coil to be the strip head of the steel coil by mistake, the uncoiler is controlled to stop rotating forwards at the moment, and the straightening machine is closed; through the judgement of the above-mentioned delay preset time quantum, make the straightener give the signal that the decoiler continues corotation again when contacting belted steel tape head, can in time eliminate and beat the problem that causes the decoiler mistake to open a book because of the coil of strip head fold because of the coil of strip bundling causes, even the steel tape head falls into the pit in the preset time quantum, the pile volume is also few, belted steel warp for a short time, can handle fast, avoided the operation personnel to fail to discover the coil of strip and normally open a book, lead to the accident of piling up a large amount of steel in the pit, the belted steel loss has been reduced, the security of the operation of opening a book and the production efficiency.
Based on the same inventive concept of the foregoing embodiment, in yet another alternative embodiment, as shown in fig. 3, there is provided an uncoiling control system for a cold-rolled steel coil, which is applied to an uncoiling process section of a cold-rolling subsequent unit, the uncoiling control system includes:
the uncoiler control module 10 is used for controlling the uncoiler to rotate reversely so that a magnetic belt of the uncoiler detects a first strip head signal of the cold-rolled steel coil; the control device is used for controlling the guide plate table of the uncoiler to ascend and closing the pinch roll according to the first strip head signal;
the straightener control module 20 is used for controlling the opening of the straightener;
the uncoiler control module 10 controls the uncoiler to rotate forward for a preset time period;
the straightening machine control module 20 judges whether the straightening machine detects a second strip head signal of the cold-rolled steel coil in a preset time period;
if the straightener detects a second strip head signal of the cold-rolled steel coil, the uncoiler control module 10 and the straightener control module 20 control the uncoiler to rotate forwards;
if the straightener does not detect the second strip head signal of the cold-rolled steel coil, the uncoiler control module 10 controls the uncoiler to stop rotating forward, and the straightener control module 20 controls the straightener to be closed.
Optionally, the preset time period is 20 seconds to 40 seconds.
Optionally, before controlling the uncoiler to rotate reversely so that the magnetic belt of the uncoiler detects the first strip head signal of the cold-rolled steel coil, the uncoiler control module 10 is further configured to:
controlling the cold-rolled steel coil to be sleeved on a mandrel of the uncoiler;
and controlling the pressing of a press roller of the uncoiler.
Optionally, after controlling the pressing of the pressing roller of the uncoiler, before controlling the uncoiler to rotate reversely so that the magnetic belt of the uncoiler detects the first strip head signal of the cold-rolled steel coil, the uncoiler control module 10 controls the uncoiler to pause for a first time period.
Optionally, after controlling the straightener to start, before controlling the uncoiler to rotate forward for a preset time period, the uncoiler control module 10 controls the uncoiler to pause for a second time period.
Optionally, after controlling the uncoiler to rotate forward in the straightener, the uncoiler control module 10 is further configured to:
controlling a guide plate table of the uncoiler to retract;
controlling a guide plate table of the uncoiler to swing down;
the uncoiler control module 10 and the straightener control module 20 continue to control the uncoiler to rotate forwards to the straightener.
Optionally, after controlling the uncoiler to rotate forwards and before controlling the guide plate table of the uncoiler to retract, the uncoiler control module 10 controls the uncoiler to pause for a third time period.
Through one or more embodiments of the present invention, the present invention has the following advantageous effects or advantages:
the invention provides an uncoiling control method of a cold-rolled steel coil, which controls a guide plate table to ascend, a pinch roll to close and a straightener to open when an uncoiler rotates reversely and a magnetic belt detects a first strip head signal of the steel coil; then, the uncoiler rotates forwards for a preset time period, whether the straightening machine detects a second strip head signal of the steel coil is judged in the preset time period, if the second strip head signal is detected in the preset time period, the steel coil is normally threaded and uncoiled, and the uncoiler is controlled to rotate forwards to the straightening machine; if the second strip head signal is not detected in the preset time period, the situation that the steel coil is not penetrated successfully is shown, the magnetic belt judges the wrinkle at the head of the steel coil to be the strip head of the steel coil by mistake, the uncoiler is controlled to stop rotating forwards at the moment, and the straightening machine is closed; through the judgement of the above-mentioned delay preset time quantum, make the straightener give the signal that the decoiler continues corotation again when contacting belted steel tape head, can in time eliminate and beat the problem that causes the decoiler mistake to open a book because of the coil of strip head fold because of the coil of strip bundling causes, even the steel tape head falls into the pit in the preset time quantum, the pile volume is also few, belted steel warp for a short time, can handle fast, avoided the operation personnel to fail to discover the coil of strip and normally open a book, lead to the accident of piling up a large amount of steel in the pit, the belted steel loss has been reduced, the security of the operation of opening a book and the production efficiency.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. The uncoiling control method of the cold-rolled steel coil is characterized by being applied to an uncoiling process section of a cold-rolling subsequent unit, and comprises the following steps:
controlling an uncoiler to rotate reversely so that a magnetic belt of the uncoiler detects a first strip head signal of the cold-rolled steel coil;
controlling a guide plate table of the uncoiler to ascend and closing a pinch roll according to the first strip head signal;
controlling the straightening machine to be started;
controlling the uncoiler to rotate forward for a preset time period;
judging whether the straightener detects a second strip head signal of the cold-rolled steel coil or not in the preset time period;
if the straightening machine detects a second strip head signal of the cold-rolled steel coil, controlling the uncoiler to rotate forwards;
and if the straightening machine does not detect a second strip head signal of the cold-rolled steel coil, controlling the uncoiler to stop rotating positively, and controlling the straightening machine to be closed.
2. The unwinding control method according to claim 1, wherein the preset time period is 20 to 40 seconds.
3. The uncoiling control method as claimed in claim 1, wherein before said controlling an uncoiler to reverse such that a magnetic belt of said uncoiler detects a first tap signal of said coil of cold rolled steel, said uncoiling control method further comprises:
controlling the cold-rolled steel coil to be sleeved on a mandrel of the uncoiler;
and controlling the pressing of the press roller of the uncoiler.
4. The uncoiling control method as claimed in claim 3, wherein after said controlling the pressing roller reduction of the uncoiler, before said controlling the uncoiler to reverse so that the magnetic belt of the uncoiler detects the first strip head signal of the cold rolled steel coil, the uncoiling control method further comprises:
controlling the uncoiler to pause for a first period of time.
5. The unwinding control method according to claim 1, wherein after the control leveler is started and before the control unwinder is rotated forward for a preset time period, the unwinding control method further comprises:
controlling the uncoiler to pause for a second period of time.
6. The unwinding control method according to claim 1, wherein after the controlling of forward rotation of the unwinder to the straightener, the unwinding control method further comprises:
controlling a guide plate table of the uncoiler to retract;
controlling a guide plate table of the uncoiler to swing down;
and continuously controlling the uncoiler to rotate forwards by the straightening machine.
7. The unwinding control method according to claim 6, wherein after said controlling the unwinding machine to rotate forward to the straightener, before said controlling the guide table of the unwinding machine to retract, the unwinding control method further comprises:
controlling the uncoiler to pause for a third time period.
8. The utility model provides a control system opens a book of cold rolled steel coil which characterized in that, control system opens a book is applied to the process section of opening a book of cold rolling follow-up unit, control system opens a book includes:
the uncoiler control module is used for controlling the uncoiler to rotate reversely so that a magnetic belt of the uncoiler detects a first strip head signal of the cold-rolled steel coil; the control device is used for controlling a guide plate table of the uncoiler to ascend and closing a pinch roll according to the first strip head signal;
the straightener control module is used for controlling the straightener to be started;
the uncoiler control module controls the uncoiler to rotate forward for a preset time period;
the straightening machine control module judges whether the straightening machine detects a second strip head signal of the cold-rolled steel coil in the preset time period;
if the straightening machine detects a second strip head signal of the cold-rolled steel coil, the uncoiler control module and the straightening machine control module control the uncoiler to rotate forwards;
and if the straightening machine does not detect a second strip head signal of the cold-rolled steel coil, the uncoiler control module controls the uncoiler to stop rotating positively, and the straightening machine control module controls the straightening machine to close.
9. The system for controlling decoiling of a coil of cold rolled steel as claimed in claim 8, wherein before said control of the decoiler to reverse such that the magnetic belt of the decoiler detects the first strip head signal of the coil of cold rolled steel, said decoiler control module is further configured to:
controlling the cold-rolled steel coil to be sleeved on a mandrel of the uncoiler;
and controlling the pressing of the press roller of the uncoiler.
10. The system for controlling uncoiling of a coil of cold rolled steel according to claim 8, wherein after said controlling of the forward rotation of said uncoiler to said straightener, said uncoiler control module is further configured to:
controlling a guide plate table of the uncoiler to retract;
controlling a guide plate table of the uncoiler to swing down;
the uncoiler control module and the straightener control module continue to control the uncoiler to rotate forwards to the straightener.
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| CN202110046054.1A CN112872097A (en) | 2021-01-14 | 2021-01-14 | Uncoiling control method and uncoiling control system for cold-rolled steel coil |
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| CN202110046054.1A CN112872097A (en) | 2021-01-14 | 2021-01-14 | Uncoiling control method and uncoiling control system for cold-rolled steel coil |
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