CN113865911B - Automatic control method for bar cooling bed hot card sampling - Google Patents
Automatic control method for bar cooling bed hot card sampling Download PDFInfo
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- CN113865911B CN113865911B CN202111057583.8A CN202111057583A CN113865911B CN 113865911 B CN113865911 B CN 113865911B CN 202111057583 A CN202111057583 A CN 202111057583A CN 113865911 B CN113865911 B CN 113865911B
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- 238000005070 sampling Methods 0.000 title claims abstract description 56
- 238000001816 cooling Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 2
- 101100408454 Arabidopsis thaliana PLC6 gene Proteins 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- General Factory Administration (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a method for automatically controlling hot card sampling of a bar cooling bed, which belongs to the technical field of metal bar sampling, and adopts a PLC (programmable logic controller) for controlling cutting action of a flying shear and conveying speed of a roller way, wherein the PLC is connected with an upper computer; the control method comprises the following steps: firstly, presetting an additional length value of the length-doubling bar and a cutting value of the flying shears during sampling by an upper computer, when a PLC receives a sampling instruction, starting counting the cutting number of the flying shears, when the preset cutting value is reached, adding the preset additional length value of the length-doubling bar into the length value of the length-doubling bar cut at the time by the PLC, and simultaneously, controlling the conveying speed of a roller way to be slowed down until the steel throwing of the length-doubling bar for sampling is completed; to cycle through the next cycle. The invention can solve the problems that the quality of products is affected, raw materials are wasted and the production cost is increased because the section of the sampled double-length bar cannot be clearly distinguished in the existing bar cooling bed hot card sampling.
Description
Technical Field
The invention relates to the technical field of metal bar sampling, in particular to a bar cooling bed hot card sampling automatic control method.
Background
In a bar production workshop of a steel manufacturing enterprise, bars are cut into multiple bars through flying cutting controlled by a PLC (programmable logic controller), then are conveyed to a cooling bed through a roller way controlled by the PLC, are cooled by a steel throwing upper cooling bed and are output, and the PLC is connected with an upper computer for inputting control instructions. In order to ensure production quality, the sampling is usually carried out on the multiple-length bars, the sampling is carried out on the detection samples of the multiple-length bars during the sampling, the sampling of the existing detection samples is usually carried out manually, one of the multiple-length bars is randomly extracted for sampling, and the conveying roller way is used for conveying the multiple-length bars to the cooling bed without stopping, and the tail parts of the multiple-length bars are tidy after being thrown on the cooling bed, and the sampling points are hot and high in temperature, so that the problem that the quality of products is affected, raw materials are wasted and the production cost is increased due to the fact that the sampling points cannot be clearly distinguished.
Disclosure of Invention
The invention provides a method for automatically controlling the sampling of a bar cooling bed hot card, which can solve the problems that the quality of a product is affected, raw materials are wasted and the production cost is increased because the section of a sampled double-length bar cannot be clearly distinguished in the existing bar cooling bed hot card sampling.
In order to solve the problems, the invention adopts the following technical scheme: the method for automatically controlling the hot card sampling of the bar cooling bed adopts a PLC for controlling the cutting action of the flying shears and the conveying speed of the roller way, and the PLC is connected with an upper computer;
the control method comprises the following steps: firstly, presetting an additional length value of the length-doubling bar and a cutting value of the flying shears during sampling by an upper computer, when a PLC receives a sampling instruction, starting counting the cutting number of the flying shears, when the preset cutting value is reached, adding the preset additional length value of the length-doubling bar into the length value of the length-doubling bar cut at the time by the PLC, and simultaneously, controlling the conveying speed of a roller way to be slowed down until the steel throwing of the length-doubling bar for sampling is completed; to cycle through the next cycle.
Among the above technical schemes, more specific technical schemes may also be: when the PLC adds the preset additional length value into the length value of the length-doubled bar cut at this time, the length value of the length-doubled bar cut at this time is controlled to be the original length value plus the additional length value.
Further: when the preset cutting number is reached, the sampling enabling is triggered firstly, then the PLC adds the additional length value of the preset length-doubling bar to the length value of the cut length-doubling bar, and the sampling enabling is cancelled immediately after the sampling is completed.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the method comprises the steps that firstly, the additional length value of the length-doubling bar and the cutting number of the flying shears during sampling are preset through an upper computer, when a PLC receives a sampling instruction, the cutting number of the flying shears is counted, when the preset cutting number is reached, the PLC adds the preset additional length value of the length-doubling bar to the length value of the length-doubling bar cut at the time, meanwhile, the conveying speed of a roller way is controlled to be slowed down until steel throwing of the sampled length-doubling bar is completed, and the next cycle is circulated; the hot card of the cooling bed can be guided to make a sampling plan and a sampling length, so that the length value of the length-doubling bar to be sampled is larger than that of the common length-doubling bar, the random sampling is prevented from causing the length of the length-doubling bar to be not long enough to form a non-ruler, sampling steel stretches out and is separated from the common length-doubling bar by a certain distance, the sampling is convenient to take, the length dimension of the sampled length-doubling bar is identical with that of the common length-doubling bar, the yield is improved, the waste of raw materials is avoided, the production cost is reduced, the working efficiency is improved, and the labor intensity is reduced.
Drawings
Fig. 1 is a schematic illustration of a multiple length bar from a flying shear to a cooling bed in accordance with an embodiment of the present invention.
FIG. 2 is a control block diagram of a roller table and a cooling bed according to an embodiment of the invention.
Detailed Description
The invention is further described in detail below with reference to the examples of the drawings:
the bar cooling bed hot-clamping sampling shown in fig. 1 is carried out in the process that bars are cut into Cheng Beiche bars 2 by flying shears 1 and then sent to a cooling bed 4 through a roller way 3 to be thrown on the cooling bed 4, wherein a mark 5 is a length-doubling bar to be sampled, the length value of the length-doubling bar 5 before sampling is larger than that of a common length-doubling bar 2, and the length value of the length-doubling bar 5 after sampling is equal to that of the common length-doubling bar 2; as shown in fig. 2, the control ports of the PLC6 are respectively connected with the ports of the flying shear driving unit 7 and the transmission unit 8, the flying shear driving unit 7 drives the cutting action of the flying shear 1, and the transmission unit 8 controls the operation of the roller table 3; the PLC6 is connected with the upper computer 9;
the method for automatically controlling the hot card sampling of the bar cooling bed comprises the following steps: firstly, presetting an additional length value of a length-doubling bar and the cutting number of the flying shears during sampling by an upper computer, when a PLC receives a sampling instruction, starting to count the cutting number of the flying shears, when the preset cutting number is reached, firstly triggering sampling enabling, then adding the preset additional length value of the length-doubling bar into the length value of the length-doubling bar cut at this time by the PLC, and controlling the length value of the length-doubling bar cut at this time to be the original length value plus the additional length value; meanwhile, the conveying speed of the roller way is controlled to be slowed down, so that the position of the cut length-doubled bar on the cooling bed is separated from the common length-doubled bar by a certain distance, and the distance is controlled within the effective range of the sampling length; immediately canceling sampling enabling until the steel throwing of the sampled multiple-length bar is completed, and preventing the influence on the normal steel throwing of the next multiple-length bar; to cycle through the next cycle.
The invention can guide the hot card of the cooling bed to make a sampling plan and a sampling length, so that the length value of the length-doubled bar to be sampled is larger than that of the common length-doubled bar, the random sampling is prevented from causing the length of the length-doubled bar to be not long enough to form a non-length, the sampling steel stretches out and is separated from the common length-doubled bar by a certain distance, the sampling is convenient, the length dimension of the sampled length-doubled bar is the same as that of the common length-doubled bar, the yield is improved, the waste of raw materials is avoided, the production cost is reduced, the working efficiency is improved, and the labor intensity is reduced.
Claims (3)
1. A method for automatically controlling the sampling of a bar cooling bed hot card is characterized by comprising the following steps: a PLC for controlling the cutting action of the flying shears and the conveying speed of the roller way is adopted, and the PLC is connected with an upper computer;
the control method comprises the following steps: firstly, presetting an additional length value of the length-doubling bar and a cutting value of the flying shears during sampling by an upper computer, when a PLC receives a sampling instruction, starting counting the cutting number of the flying shears, when the preset cutting value is reached, adding the preset additional length value of the length-doubling bar into the length value of the length-doubling bar cut at the time by the PLC, and simultaneously, controlling the conveying speed of a roller way to be slowed down until the steel throwing of the length-doubling bar for sampling is completed; to cycle through the next cycle.
2. The method for automatically controlling the hot card sampling of the bar cooling bed according to claim 1, wherein the method comprises the following steps: when the PLC adds the preset additional length value into the length value of the length-doubled bar cut at this time, the length value of the length-doubled bar cut at this time is controlled to be the original length value plus the additional length value.
3. The method for automatic control of bar cooling bed hot card sampling according to claim 1 or 2, characterized in that: when the preset cutting number is reached, the sampling enabling is triggered firstly, then the PLC adds the additional length value of the preset length-doubling bar to the length value of the cut length-doubling bar, and the sampling enabling is cancelled immediately after the sampling is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111057583.8A CN113865911B (en) | 2021-09-09 | 2021-09-09 | Automatic control method for bar cooling bed hot card sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111057583.8A CN113865911B (en) | 2021-09-09 | 2021-09-09 | Automatic control method for bar cooling bed hot card sampling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113865911A CN113865911A (en) | 2021-12-31 |
| CN113865911B true CN113865911B (en) | 2024-02-20 |
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| CN202111057583.8A Active CN113865911B (en) | 2021-09-09 | 2021-09-09 | Automatic control method for bar cooling bed hot card sampling |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170513A (en) * | 1984-02-14 | 1985-09-04 | Kobe Steel Ltd | Method and equipment for collecting sample in steel bar rolling |
| CN1355073A (en) * | 2000-12-01 | 2002-06-26 | 机械工业部西安重型机械研究所 | Control system and method for in-line set-point scaling on metallic plate or band |
| JP2004237328A (en) * | 2003-02-06 | 2004-08-26 | Jfe Engineering Kk | Method for sampling test sample of weld zone between billets |
| CN201796266U (en) * | 2010-09-26 | 2011-04-13 | 鞍钢股份有限公司 | Fixed-length flying shear control device |
| CN105067371A (en) * | 2015-08-10 | 2015-11-18 | 江苏永钢集团有限公司 | Flush cutting sampling device of finished steel bars |
| CN107084861A (en) * | 2017-04-01 | 2017-08-22 | 唐山钢铁集团微尔自动化有限公司 | A kind of random time intervals sampling method |
| CN207533687U (en) * | 2017-12-13 | 2018-06-26 | 福建三安钢铁有限公司 | A kind of finished product automatic sampling device in Bar Cooling Bed |
-
2021
- 2021-09-09 CN CN202111057583.8A patent/CN113865911B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170513A (en) * | 1984-02-14 | 1985-09-04 | Kobe Steel Ltd | Method and equipment for collecting sample in steel bar rolling |
| CN1355073A (en) * | 2000-12-01 | 2002-06-26 | 机械工业部西安重型机械研究所 | Control system and method for in-line set-point scaling on metallic plate or band |
| JP2004237328A (en) * | 2003-02-06 | 2004-08-26 | Jfe Engineering Kk | Method for sampling test sample of weld zone between billets |
| CN201796266U (en) * | 2010-09-26 | 2011-04-13 | 鞍钢股份有限公司 | Fixed-length flying shear control device |
| CN105067371A (en) * | 2015-08-10 | 2015-11-18 | 江苏永钢集团有限公司 | Flush cutting sampling device of finished steel bars |
| CN107084861A (en) * | 2017-04-01 | 2017-08-22 | 唐山钢铁集团微尔自动化有限公司 | A kind of random time intervals sampling method |
| CN207533687U (en) * | 2017-12-13 | 2018-06-26 | 福建三安钢铁有限公司 | A kind of finished product automatic sampling device in Bar Cooling Bed |
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| Publication number | Publication date |
|---|---|
| CN113865911A (en) | 2021-12-31 |
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