CN109954761B - Coil stripping system and coil stripping method thereof - Google Patents
Coil stripping system and coil stripping method thereof Download PDFInfo
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- CN109954761B CN109954761B CN201711408327.2A CN201711408327A CN109954761B CN 109954761 B CN109954761 B CN 109954761B CN 201711408327 A CN201711408327 A CN 201711408327A CN 109954761 B CN109954761 B CN 109954761B
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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
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Abstract
The invention discloses a coil unloading system, which is used for unloading a steel coil on a coiling block of a coiler and comprises a coil unloading trolley, wherein the coil unloading trolley comprises a movable base and a saddle fixed on the movable base, the movable base can move along the axial direction of the coiling block, and the saddle is used for bearing the steel coil; the both sides of removing the base are equipped with the cylinder respectively, work as when the piston rod of cylinder stretches out, the piston rod can prevent the coil of strip is followed drop on the saddle. The invention also discloses a coil unloading method for unloading the steel coil by using the coil unloading system. By adopting the coil stripping system and the coil stripping method thereof, the coil which is easy to collapse can be prevented from falling off from the saddle.
Description
Technical Field
The invention relates to the field of oriented silicon steel finishing units, in particular to a coil stripping system and a coil stripping method thereof.
Background
When the oriented silicon steel finishing machine set produces thin materials, strip steel with defects of dozens of meters at the head and the tail is often cut off and rolled into small rolls for convenient use. Because the outer diameter of the small coil is small and is generally below 560mm, the small coil lacks rigidity, the coil is collapsed frequently during coil unloading, the coil unloading is difficult, the small coil cannot be basically placed on the coil unloading trolley, and the collapsed coil directly falls onto a coil unloading trolley track from the coil unloading trolley, so that potential safety hazards exist. Operators need to spend a long time on making a series of safety measures, so that not only is the operation risk present, but also the production efficiency is influenced.
Aiming at the problems in the prior art, the coil stripping system and the coil stripping method thereof have important significance.
Disclosure of Invention
To solve the above problems, the present invention provides an uncoiling system and an uncoiling method thereof, which can prevent a steel coil, which is easily collapsed, from falling off from a saddle.
In order to achieve the purpose, the coil unloading system is used for unloading the steel coil on the coiling block of the coiling machine and comprises an unloading trolley, wherein the unloading trolley comprises a movable base and a saddle fixed on the movable base, the movable base can move along the axial direction of the coiling block, and the saddle is used for bearing the steel coil; the both sides of removing the base are equipped with the cylinder respectively, work as when the piston rod of cylinder stretches out, the piston rod can prevent the coil of strip is followed drop on the saddle.
Preferably, the coil stripping system further comprises a measuring roller and a PLC controller;
the measuring roller is provided with an encoder, and the strip steel runs to the coiling machine through the measuring roller and is coiled by the coiling drum;
the PLC calculates the outer diameter of the steel coil according to the pulse signal output by the encoder, judges whether the outer diameter of the steel coil is smaller than a set value or not, and controls the piston rod to extend out if the outer diameter of the steel coil is smaller than the set value.
Further, the encoder is an incremental encoder.
Preferably, two sides of the movable base are respectively provided with a groove capable of accommodating the cylinder.
Preferably, the number of the cylinders is plural.
The invention also discloses a coil unloading method for unloading the steel coil by using the coil unloading system, which comprises the following steps:
step one, calculating the outer diameter of the steel coil;
moving the coil stripping trolley to the position below the steel coil, wherein the saddle is in contact with the steel coil;
judging whether the outer diameter of the steel coil is smaller than a set value or not, if the outer diameter of the steel coil is smaller than the set value, extending out a piston rod of the air cylinder, and preventing the steel coil from falling off from the saddle by the piston rod;
and step four, after the mandrel of the winding drum is contracted, the coil unloading trolley moves the steel coil out of the winding drum, and the unloading of the steel coil is finished.
Preferably, in the first step, the calculation formula of the outer diameter of the steel coil is as follows:
wherein D is1For the external diameter of coil of strip, d does the diameter of reel, L does the total length of belted steel of coil of strip, h does the thickness of belted steel, and a does the windup coefficient of coil of strip, pi is the circumference.
Further, the total length of the strip steel of the steel coil is measured through a measuring roller, an encoder is arranged on the measuring roller, the encoder outputs pulse signals to a PLC (programmable logic controller), and the PLC calculates the number of pulses output by the encoder in the process that the strip head of the strip steel passes through the measuring roller and the strip tail of the strip steel passes through the measuring roller according to the pulse signals output by the encoder;
the calculation formula of the total length of the steel strip of the steel coil is as follows:
wherein, L does the total length of belted steel of coil of strip, M is for following the tape head of belted steel passes through the measuring roller arrives the tape tail of belted steel passes through the in-process of measuring roller the pulse number of encoder output, D2The diameter of the measuring roller, n the resolution of the encoder, and pi the circumference ratio.
According to the coil stripping system and the coil stripping method thereof, the cylinders are respectively arranged on the two sides of the movable base, so that when a coil which is easy to collapse is required to be unloaded, the coil can be prevented from falling off from the saddle by using the piston rods of the cylinders. Furthermore, by arranging the measuring roller and the PLC, the outer diameter of the steel coil on the winding drum is calculated, and whether the outer diameter of the steel coil is smaller than a set value or not is judged, so that whether the piston rod of the control cylinder extends out or not is controlled, and then the automatic control of the extension and retraction of the piston rod is realized.
Drawings
FIG. 1 is a schematic structural view of the decoiling system of the present invention showing the decoiling carriage positioned below the coiler drum;
fig. 2 is a schematic structural view of the coil discharging system of the present invention, which shows a state where a steel coil is discharged to a coil discharging carriage.
Detailed Description
The structure, operation, and the like of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 2, the coil unloading system of the present invention is used for unloading a steel coil 10 on a winding drum 2 of a coiler 1, and is particularly suitable for unloading a steel coil 10 with a small outer diameter. The coil stripping system comprises a coil stripping trolley (not shown) which comprises a movable base 6 and a saddle 5 fixed on the movable base 6. The above-mentioned moving base 6 can move along the axis direction of the winding drum 2, and this function can be realized through a plurality of modes, for example, the moving base 6 below is provided with a walking wheel, and the axis direction along the winding drum 2 is provided with a track for the walking wheel to walk. Saddle 5 is used for accepting coil of strip 10, in order to make this coil of strip dolly be applicable to the coil of strip 10 of multiple external diameter size, saddle 5 can rise or descend for moving base 6, when the coil of strip 10 needs to be unloaded, move base 6 and remove to the below of coil of strip 10, saddle 5 rises to and contacts with coil of strip 10, at this moment, the dabber shrink of reel 2 of coiling machine 1, the coil of strip dolly then bears coil of strip 10 and removes to the direction of keeping away from reel 2, make coil of strip 10 take off from reel 2, later the coil of strip dolly again with coil of strip 10 carry to the place that is used for depositing coil of strip 10, saddle 5 descends for moving base 6 at last, the unloading dolly can return the normal position.
When the external diameter of coil of strip 10 is very little, coil of strip 10 can take place to collapse the roll phenomenon because of lacking the rigidity during the coil of strip to lead to coil of strip 10 can't place on saddle 5 and drop to the both sides of unloading the coil of strip and getting off, in order to prevent the emergence of above-mentioned phenomenon, can set up cylinder 7 respectively in the both sides of removing base 6, as shown in fig. 2, when the piston rod 8 of this cylinder 7 stretches out, piston rod 8 can prevent that coil of strip 10 from dropping from saddle 5.
In order to avoid the interference between the air cylinder 7 and other devices, the two sides of the movable base 6 are respectively provided with a groove 9 capable of accommodating the air cylinder 7. The coil stripping system is suitable for small steel coils with small outer diameters and easy collapse and large steel coils with large outer diameters and no collapse, when the small steel coils need to be unloaded, the piston rod 8 of the air cylinder 7 extends out, and the piston rod 8 can prevent the small steel coils from falling off the saddle 5; when the large steel coil needs to be unloaded, the large steel coil cannot collapse, and the piston rod 8 of the air cylinder 7 retracts, so that the large steel coil cannot interfere with other equipment.
Preferably, the air cylinder 7 can be provided in plurality, and as shown in fig. 1 and fig. 2, two air cylinders 7 are respectively provided on both sides of the moving base 6. Of course, the air cylinder 7 can be replaced by a hydraulic cylinder or other driving mechanism capable of achieving the telescopic function.
In the coil unloading process, whether the piston rod 8 of the air cylinder 7 extends out depends on the outer diameter of the steel coil 10 required to be unloaded, if the outer diameter of the steel coil 10 is smaller than a set value, the piston rod 8 needs to extend out, so that the piston rod 8 can prevent the steel coil 10 from falling off the saddle 5; if the outer diameter of the steel coil 10 is larger than the set value, the piston rod 8 does not need to be extended. Wherein the set value is defined as the maximum value of the outer diameter of the steel coil 10 where the coil collapse occurs.
The expansion and contraction of the piston rod 8 can be manually controlled, the automatic control of the expansion and contraction of the piston rod 8 is realized for labor saving and convenient operation, and the coil stripping system further comprises a measuring roller 4 and a PLC (programmable logic controller) (not shown in the figure).
The measuring roll 4 is provided with an encoder (not shown in the figure), the strip steel 3 firstly passes through the measuring roll 4, then runs to the coiling machine 1 and is coiled by the coiling drum 2, wherein the encoder converts the angular displacement of the measuring roll 4 into a pulse signal. Preferably, the encoder is selected to be an incremental encoder.
The PLC calculates the outer diameter of the steel coil 10 according to the pulse signal output by the encoder, judges whether the outer diameter of the steel coil 10 is smaller than a set value or not, and controls the piston rod 8 to extend out if the outer diameter of the steel coil 10 is smaller than the set value.
Specifically, the coil unloading method for unloading the steel coil 10 by using the coil unloading system includes the following steps:
step one, calculating the outer diameter of the steel coil 10.
The outer diameter of the steel coil 10 can be measured manually or calculated by the following calculation formula:
wherein D is1The outer diameter of the steel coil 10, d the diameter of the winding drum 2, L the total length of the strip steel 3 of the steel coil 10, h the thickness of the strip steel 3, and a the tightness factor of the steel coil 10, where a is 1 and pi is the circumferential ratio.
The method for calculating the total length of the strip steel 3 of the steel coil 10 includes various methods, preferably, the method can be measured by the measuring roller 4, specifically, the strip steel 3 firstly passes through the measuring roller 4, then runs to the coiler 1 and is coiled by the winding drum 2, the measuring roller 4 is provided with an encoder, the encoder outputs a pulse signal to the PLC controller, the PLC controller calculates the number of pulses output by the encoder in the process that the strip head of the strip steel 3 passes through the measuring roller 4 and the strip tail of the strip steel 3 passes through the measuring roller 4 according to the pulse signal output by the encoder, that is, when the strip head of the strip steel 3 passes through the measuring roller 4, the PLC controller starts to calculate the number of pulses output by the encoder, when the strip tail of the strip steel 3 passes through the measuring roller 4, the PLC controller finishes calculating the number of pulses output by the encoder, and then the specific calculation formula of the total length of the:
wherein, L is the total length of the strip steel 3 of the steel coil 10, M is the number of pulses output by the encoder in the process that the strip head of the strip steel 3 passes through the measuring roller 4 to the strip tail of the strip steel 3 passes through the measuring roller 4, and D2To measure the diameter of the roller 4, n is the resolution of the encoder and pi is the circumference ratio.
And step two, moving the coil stripping trolley to the position below the steel coil 10, and lifting the saddle 5 to the position contacting with the steel coil 10.
Step three, judging whether the outer diameter of the steel coil 10 is smaller than a set value or not, if the outer diameter of the steel coil 10 is smaller than the set value, extending out the piston rod 8 of the air cylinder 7, and preventing the steel coil 10 from falling off from the saddle 5 by the piston rod 8; if the outer diameter of the steel coil 10 is larger than the set value, the piston rod 8 of the cylinder 7 does not need to be extended. Preferably, the PLC controller may determine whether the outer diameter of the steel coil 10 is smaller than a set value, and control the extension and retraction of the piston rod 8.
And step four, after the mandrel of the winding drum 2 is contracted, the coil unloading trolley moves the steel coil 10 out of the winding drum 2, and the steel coil 10 is unloaded.
According to the coil stripping system and the coil stripping method thereof, the cylinders 7 are respectively arranged on the two sides of the movable base 6, so that when a coil 10 which is easy to collapse is required to be unloaded, the coil 10 can be prevented from falling off the saddle 5 by the piston rods 8 of the cylinders 7. Further, through setting up measuring roller 4 and PLC controller, calculate the external diameter of coil of strip 10 on reel 2 to judge whether the external diameter of coil of strip 10 is less than the setting value, thereby whether the piston rod 8 of control cylinder 7 stretches out, and then realize the flexible automatic control of piston rod 8.
The foregoing is merely illustrative of the present invention, and it will be appreciated by those skilled in the art that various modifications may be made without departing from the principles of the invention, and the scope of the invention is to be determined accordingly.
Claims (4)
1. A coil unloading method is characterized in that a coil unloading system is used for unloading a steel coil on a coiling block of a coiler, the coil unloading system comprises a coil unloading trolley, the coil unloading trolley comprises a movable base and a saddle fixed on the movable base, the movable base can move along the axial direction of the coiling block, and the saddle is used for bearing the steel coil; the two sides of the movable base are respectively provided with an air cylinder;
the coil stripping method comprises the following steps:
step one, calculating the outer diameter of the steel coil;
moving the coil stripping trolley to the position below the steel coil, and lifting the saddle to be in contact with the steel coil;
judging whether the outer diameter of the steel coil is smaller than a set value or not, if the outer diameter of the steel coil is smaller than the set value, extending out a piston rod of the air cylinder, and preventing the steel coil from falling off from the saddle by the piston rod; if the outer diameter of the steel coil is larger than a set value, the piston rod of the air cylinder retracts to avoid the interference between the air cylinder and the steel coil;
after the mandrel of the winding drum is contracted, the coil unloading trolley moves the steel coil out of the winding drum, and the unloading of the steel coil is finished;
in the first step, a calculation formula of the outer diameter of the steel coil is as follows:
wherein D is1The outer diameter of the steel coil, d the diameter of the winding drum, L the total length of the strip steel of the steel coil, h the thickness of the strip steel, a the coiling coefficient of the steel coil, and pi the circumference ratio; the total length of the strip steel of the steel coil is measured through a measuring roller, an encoder is arranged on the measuring roller, the strip steel runs to the coiling machine through the measuring roller and is coiled by the coiling block, the encoder outputs pulse signals to a PLC (programmable logic controller), and the PLC calculates the number of pulses output by the encoder in the process that the strip head of the strip steel passes through the measuring roller and the strip tail of the strip steel passes through the measuring roller according to the pulse signals output by the encoder;
the calculation formula of the total length of the steel strip of the steel coil is as follows:
wherein, L does the total length of belted steel of coil of strip, M is for following the tape head of belted steel passes through the measuring roller arrives the tape tail of belted steel passes through the in-process of measuring roller the pulse number of encoder output, D2The diameter of the measuring roller, n the resolution of the encoder, and pi the circumference ratio.
2. The method of decoiling claim 1, wherein the encoder is an incremental encoder.
3. The coil stripping method as claimed in claim 1, wherein both sides of said movable base are respectively provided with a groove capable of accommodating said cylinder.
4. The coil stripping method as claimed in claim 1, wherein the number of said cylinders is plural.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711408327.2A CN109954761B (en) | 2017-12-22 | 2017-12-22 | Coil stripping system and coil stripping method thereof |
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| CN201711408327.2A CN109954761B (en) | 2017-12-22 | 2017-12-22 | Coil stripping system and coil stripping method thereof |
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| CN109954761A CN109954761A (en) | 2019-07-02 |
| CN109954761B true CN109954761B (en) | 2021-05-14 |
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| CN110668264A (en) * | 2019-10-02 | 2020-01-10 | 山西太钢不锈钢股份有限公司 | Reducing coiling machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57181723A (en) * | 1981-04-30 | 1982-11-09 | Nippon Steel Corp | Slip preventing method in case when annealed coil is rewound |
| CN102806235A (en) * | 2012-08-17 | 2012-12-05 | 中冶南方工程技术有限公司 | Online calculating method for wrap angle of cold-rolled strip steel plate shape roll |
| CN202594458U (en) * | 2012-04-26 | 2012-12-12 | 宝山钢铁股份有限公司 | Auxiliary device for unloading small coils and installing sleeve on coiling machine |
| CN202715655U (en) * | 2012-05-30 | 2013-02-06 | 中冶南方工程技术有限公司 | System for precisely determining coil diameter value of strip steel coiling machine |
| CN203002839U (en) * | 2012-11-07 | 2013-06-19 | 宝钢发展有限公司 | Auxiliary small tail roll unrolling device |
| CN104923584A (en) * | 2014-03-20 | 2015-09-23 | 宝山钢铁股份有限公司 | Coil stripping car |
| CN105066866A (en) * | 2015-07-15 | 2015-11-18 | 武汉钢铁(集团)公司 | Method for measuring steel coil radius of strip steel reel coiler working line |
-
2017
- 2017-12-22 CN CN201711408327.2A patent/CN109954761B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57181723A (en) * | 1981-04-30 | 1982-11-09 | Nippon Steel Corp | Slip preventing method in case when annealed coil is rewound |
| CN202594458U (en) * | 2012-04-26 | 2012-12-12 | 宝山钢铁股份有限公司 | Auxiliary device for unloading small coils and installing sleeve on coiling machine |
| CN202715655U (en) * | 2012-05-30 | 2013-02-06 | 中冶南方工程技术有限公司 | System for precisely determining coil diameter value of strip steel coiling machine |
| CN102806235A (en) * | 2012-08-17 | 2012-12-05 | 中冶南方工程技术有限公司 | Online calculating method for wrap angle of cold-rolled strip steel plate shape roll |
| CN203002839U (en) * | 2012-11-07 | 2013-06-19 | 宝钢发展有限公司 | Auxiliary small tail roll unrolling device |
| CN104923584A (en) * | 2014-03-20 | 2015-09-23 | 宝山钢铁股份有限公司 | Coil stripping car |
| CN105066866A (en) * | 2015-07-15 | 2015-11-18 | 武汉钢铁(集团)公司 | Method for measuring steel coil radius of strip steel reel coiler working line |
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