CN110548767B - Control method for head-tail shearing of rod wire - Google Patents
Control method for head-tail shearing of rod wire Download PDFInfo
- Publication number
- CN110548767B CN110548767B CN201910899521.8A CN201910899521A CN110548767B CN 110548767 B CN110548767 B CN 110548767B CN 201910899521 A CN201910899521 A CN 201910899521A CN 110548767 B CN110548767 B CN 110548767B
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- Prior art keywords
- head
- tail
- rod
- flying shear
- shearing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
- B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shearing Machines (AREA)
Abstract
The invention discloses a wire head for a rodThe control method of tail shearing comprises the following steps of firstly, selecting rod wires, placing the rod wires into shearing equipment, and measuring the distance L between every two adjacent rod wires; then measuring the walking perimeter C and the crop length L of the equivalent radius of the flying shear blade in the shearing equipment1Length of tail trimming L2(ii) a And finally, judging the position of the cutting edge of the flying shear, and respectively cutting the head and the tail of the rod wire. The invention discloses a control method for shearing the head and the tail of a rod wire, which solves the problem that the head and the tail of the rod wire are sheared disorderly by flying shears during high-speed rolling in the prior art.
Description
Technical Field
The invention belongs to the technical field of bar shearing, and relates to a control method for head and tail shearing of bar and wire rods.
Background
Flying shears are common equipment on a reinforcing steel bar and wire production line, and mainly have the functions of carrying out fixed-length sectioning, head cutting and tail cutting on bars and wires. Meanwhile, if an accident occurs in production, the flying shears can also realize the function of breaking so as to ensure the production safety.
With the updating of the technology, the rolling speed of the bar and the wire is faster and faster, but the traditional flying shear limits the further improvement of the rolling speed of the bar and the wire. In the existing production of a rolling line, the 1# flying shear and the 2# flying shear often have the situation that a head shearing command and a tail shearing command are overlapped when the rhythm is too fast, and the phenomenon that the tail is not cut or neither is cut can be accompanied, particularly the 1# flying shear can cause the interruption of the production line and even serious production accidents because the spearhead cannot be cut off; in general, an operator can start accident flying shear breaking to reduce steel passing rhythm and reduce steel passing amount in hours, and huge property loss is caused. Therefore, it is necessary to design a rod and wire end shearing control method which can solve the problem of disordered rod and wire end shearing and meet the requirement of high-speed rolling.
Disclosure of Invention
The invention aims to provide a control method for shearing the head and the tail of a rod wire, which solves the problem that the head and the tail of the rod wire are sheared disorderly by flying shears during high-speed rolling in the prior art.
The technical scheme adopted by the invention is that the control method for shearing the head and the tail of the rod and wire is implemented according to the following steps:
step 1, selecting rod wires, placing the rod wires in a shearing device, and measuring the distance L between every two adjacent rod wires;
step 2, measuring the walking perimeter of equivalent radius of flying shear blade in shearing equipmentC. Crop length L1Length of tail trimming L2；
And 3, judging the position of a cutting edge of the flying shear, and respectively cutting the head and the tail of the rod wire.
The invention is also characterized in that:
in the step 2, the walking perimeter C of the equivalent radius of the flying shear blade specifically adopts the following formula:
C＝2πR (1)，
in the formula (1), R is the equivalent radius of the cutting edge of the flying shear, and m.
The step 3 specifically comprises the following steps:
step 3.1, controlling the flying shears to perform tail cutting action on the bar and wire;
step 3.2, if L is more than or equal to C + L1+L2If the flying shear blade is positioned at the stop position, the shearing equipment does not have tail cutting action at the moment, and the rod and wire are subjected to head cutting action;
step 3.3, if L is less than C + L1+L2And at the moment, the shearing equipment has tail cutting action, and the high speed of the flying shear during tail cutting is switched to the head cutting given speed or one head cutting action is finished in a delayed mode.
Step 3.3 is specifically:
3.3.1, if the crop order of the shearing equipment is sent out and the crop order is not reset, automatically keeping the crop order until the crop order disappears, triggering the crop, switching the high speed of flying shear during crop into a crop given speed, and finishing crop action on the rod and wire;
and 3.3.2, if the head cutting command of the shearing equipment is sent out and the cutting edge of the flying shear does not reach the stop position, delaying to finish one head cutting action, triggering the head cutting after the flying shear reaches the stop position, and finishing the head cutting action of the rod wire.
In step 3.3.2, the delay time is specifically defined by the following formula:
T＝C/2V (2)，
in the formula (2), C is the walking perimeter of the equivalent radius of the cutting edge of the flying shear, m; v is the linear velocity m/s of the cutting edge of the flying shear.
The invention has the beneficial effects that:
the control method for cutting the head and the tail of the rod and wire can effectively cut the head, the tail and the segment of the rod and wire, reduce the space volume and reduce the operation cost; the control method for shearing the head and the tail of the rod and wire rod solves the problem that the head shearing command and the tail shearing command are overlapped when the rhythm of the No. 1 flying shear and the No. 2 flying shear is too fast, avoids the occurrence of shearing accidents, and simultaneously breaks through the limitation of further improving the rolling speed of the rod and wire rod because the shearing speed of the high-speed breaking shear is optimized, so that the rod and wire rod can meet the requirement of high-speed rolling during the head and tail shearing.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The invention relates to a control method for head and tail shearing of a rod wire, which is implemented according to the following steps:
step 1, selecting rod wires, placing the rod wires in a shearing device, and measuring the distance L between every two adjacent rod wires;
step 2, measuring the walking perimeter C and the crop length L of the equivalent radius of the flying shear blade in the shearing equipment1Length of tail trimming L2；
The walking perimeter C of the equivalent radius of the cutting edge of the flying shear specifically adopts the following formula:
C＝2πR (1)，
in the formula (1), R is the equivalent radius of the cutting edge of the flying shear, and m.
Step 3, judging the position of a cutting edge of the flying shear, and respectively cutting the head and the tail of the rod wire; the method specifically comprises the following steps:
step 3.1, controlling the flying shears to perform tail cutting action on the bar and wire;
step 3.2, if L is more than or equal to C + L1+L2If the flying shear blade is positioned at the stop position, the shearing equipment does not have tail cutting action at the moment, and the rod and wire are subjected to head cutting action;
step 3.3, if L is less than C + L1+L2At this moment, the shearing equipment has tail cutting action, and then the high speed during tail cutting of the flying shear is switched to head cutting given speed or one time of head cutting action is finished in a delayed mode, and the method specifically comprises the following steps:
3.3.1, if the crop order of the shearing equipment is sent out and the crop order is not reset, automatically keeping the crop order until the crop order disappears, triggering the crop, switching the high speed of flying shear during crop into a crop given speed, and finishing crop action on the rod and wire;
and 3.3.2, if the head cutting command of the shearing equipment is sent out and the cutting edge of the flying shear does not reach the stop position, delaying to finish one head cutting action, triggering the head cutting after the flying shear reaches the stop position, and finishing the head cutting action of the rod wire.
The delay time specifically adopts the following formula:
T＝C/2V (2)，
in the formula (2), C is the walking perimeter of the equivalent radius of the cutting edge of the flying shear, m; v is the linear velocity m/s of the cutting edge of the flying shear.
Claims (4)
1. The control method for the head-tail shearing of the rod wire is characterized by comprising the following steps:
step 1, selecting rod wires, placing the rod wires in a shearing device, and measuring the distance L between adjacent rod wires;
step 2, measuring the walking perimeter C and the crop length L of the equivalent radius of the flying shear blade in the shearing equipment1Length of tail trimming L2；
Step 3, judging the position of the cutting edge of the flying shear, and respectively cutting the head and the tail of the rod wire; the method specifically comprises the following steps:
step 3.1, controlling the flying shears to perform tail cutting action on the bar and wire;
step 3.2, if L is more than or equal to C + L1+L2If the flying shear blade is positioned at the stop position, the shearing equipment does not have tail cutting action at the moment, and the rod and wire are subjected to head cutting action;
step 3.3, if L is less than C + L1+L2And at the moment, the shearing equipment has tail cutting action, and the high speed of the flying shear during tail cutting is switched to a head cutting given speed or one head cutting action is finished in a delayed mode.
2. The control method for the head-tail shearing of the rod wire as claimed in claim 1, wherein in the step 2, the walking circumference C of the equivalent radius of the cutting edge of the flying shear specifically adopts the following formula:
C＝2πR (1)，
in the formula (1), R is the equivalent radius of the cutting edge of the flying shear, and m.
3. The control method for the head-to-tail shearing of the rod wire according to claim 1, wherein the step 3.3 is specifically as follows:
3.3.1, if the crop order of the shearing equipment is sent out and the crop order is not reset, automatically keeping the crop order until the crop order disappears, triggering the crop, switching the high speed of the flying shear during the crop into a crop given speed, and finishing crop action of the rod and the wire;
and 3.3.2, if the head cutting command of the shearing equipment is sent out and the cutting edge of the flying shear does not reach the stop position, delaying to finish one head cutting action, triggering the head cutting after the flying shear reaches the stop position, and finishing the head cutting action of the rod wire.
4. The control method for head-to-tail shearing of the rod wire according to claim 3, wherein in step 3.3.2, the delay time is specifically represented by the following formula:
T＝C/2V (2)，
in the formula (2), C is the walking perimeter of the equivalent radius of the cutting edge of the flying shear, m; v is the linear velocity m/s of the cutting edge of the flying shear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899521.8A CN110548767B (en) | 2019-09-23 | 2019-09-23 | Control method for head-tail shearing of rod wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899521.8A CN110548767B (en) | 2019-09-23 | 2019-09-23 | Control method for head-tail shearing of rod wire |
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| Publication Number | Publication Date |
|---|---|
| CN110548767A CN110548767A (en) | 2019-12-10 |
| CN110548767B true CN110548767B (en) | 2020-10-27 |
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| CN201910899521.8A Active CN110548767B (en) | 2019-09-23 | 2019-09-23 | Control method for head-tail shearing of rod wire |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111421179B (en) * | 2020-03-30 | 2021-04-09 | 马鞍山钢铁股份有限公司 | Rod cold shearing fixed-length shearing control system |
| CN112387786A (en) * | 2020-11-04 | 2021-02-23 | 河钢股份有限公司承德分公司 | Flying shear shearing method and device and flying shear equipment |
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| KR20010056652A (en) * | 1999-12-16 | 2001-07-04 | 이구택 | Apparatus for measuring velocity and shape of crop of hot-bar using ccd-sensor of line-scan type |
| CN109365541A (en) * | 2018-09-13 | 2019-02-22 | 北京金自天正智能控制股份有限公司 | The control method for fully automatic of steel area equipment on a kind of high-speed bar mill production line high-speed |
| CN109590336A (en) * | 2018-11-22 | 2019-04-09 | 阳春新钢铁有限责任公司 | A kind of control system and method for steel billet spacing |
| CN109940218A (en) * | 2019-03-26 | 2019-06-28 | 中冶华天南京电气工程技术有限公司 | A kind of servo flying shear control method under the platform based on Novel control |
| KR20190076616A (en) * | 2017-12-22 | 2019-07-02 | 주식회사 포스코 | Apparatus of controlling rolling mill |
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2019
- 2019-09-23 CN CN201910899521.8A patent/CN110548767B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010056652A (en) * | 1999-12-16 | 2001-07-04 | 이구택 | Apparatus for measuring velocity and shape of crop of hot-bar using ccd-sensor of line-scan type |
| KR20190076616A (en) * | 2017-12-22 | 2019-07-02 | 주식회사 포스코 | Apparatus of controlling rolling mill |
| CN109365541A (en) * | 2018-09-13 | 2019-02-22 | 北京金自天正智能控制股份有限公司 | The control method for fully automatic of steel area equipment on a kind of high-speed bar mill production line high-speed |
| CN109590336A (en) * | 2018-11-22 | 2019-04-09 | 阳春新钢铁有限责任公司 | A kind of control system and method for steel billet spacing |
| CN109940218A (en) * | 2019-03-26 | 2019-06-28 | 中冶华天南京电气工程技术有限公司 | A kind of servo flying shear control method under the platform based on Novel control |
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| CN110548767A (en) | 2019-12-10 |
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