CN117190877A - Method for measuring fixed length of continuous casting billet - Google Patents
Method for measuring fixed length of continuous casting billet Download PDFInfo
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- CN117190877A CN117190877A CN202311167682.0A CN202311167682A CN117190877A CN 117190877 A CN117190877 A CN 117190877A CN 202311167682 A CN202311167682 A CN 202311167682A CN 117190877 A CN117190877 A CN 117190877A
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000011144 upstream manufacturing Methods 0.000 claims description 17
- 238000004513 sizing Methods 0.000 claims description 14
- 230000005484 gravity Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Length Measuring Devices By Optical Means (AREA)
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Abstract
The invention discloses a method for measuring the fixed length of a continuous casting blank. The length of the cut continuous casting blank realized by the invention does not need to be stopped, and operators can pick out unqualified products before the cut continuous casting blank enters the next working procedure according to the measuring result output by the computer, thereby meeting the requirements of the continuous casting blank hot-feeding process.
Description
Technical Field
The invention relates to the technical field, in particular to a method for measuring the fixed length of a continuous casting billet.
Background
At present, continuous casting billets have certain specification requirements, and in order to enable the produced continuous casting billets to meet the specification requirements, the fixed-size length of the continuous casting billets needs to be measured when the continuous casting billets are produced, so that the continuous casting billets meeting the specification requirements can be obtained by cutting according to the measured fixed-size length.
Currently, a continuous casting billet normally advances on a roller way at a billet drawing speed of 0.5-3m/min under the action of a withdrawal and straightening machine, an infrared camera fixed-length measuring device is installed on the roller way, the infrared camera fixed-length measuring device shoots images of the continuous casting billet advancing on the roller way, the fixed-length of the continuous casting billet is measured through image processing, and when the measured fixed-length reaches a preset fixed-length specification, the continuous casting billet meeting the fixed-length specification is obtained through cutting by a fixed-length cutting machine.
However, the infrared camera fixed-length measuring device is difficult to meet the fixed-length measuring requirements of continuous casting billets of various specifications. Moreover, the accuracy of measuring the fixed length by taking an image is limited, and particularly when measuring a short-specification continuous casting billet, the fixed length is easily interfered by cutting sparks, so that the accuracy of measuring the fixed length is low.
Therefore, there is a need to design a method for measuring the fixed length of a continuous casting billet by measuring the distance by laser.
Disclosure of Invention
The invention aims to provide a method for measuring the fixed length of a continuous casting billet, which aims to solve the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a method for measuring the fixed length of a continuous casting blank, which comprises the following steps:
obtaining the fixed-length specification of a continuous casting blank to be cut;
obtaining a preset demarcation length, and setting the demarcation length according to the sizing specification of the continuous casting blank to be cut;
determining the horizontal distance D between the trigger switch and the distance meter in the advancing direction of the cut continuous casting billet according to the fixed length L0 of the cut continuous casting billet, and enabling D to be larger than L0;
the synchronous trigger controls the trigger switch to intermittently detect the trigger signal and synchronously controls the distance meter to measure the horizontal distance between the distance meter and the billet head or the billet tail of the cut continuous casting billet in the advancing direction of the cut continuous casting billet;
when the billet tail of the cut continuous casting billet moves to the position of the trigger switch or the billet head of the cut continuous casting billet moves to the position of the trigger switch, the trigger switch is triggered, the horizontal distance L1 between the distance meter and the billet head or the billet tail of the cut continuous casting billet in the advancing direction of the cut continuous casting billet is marked and stored according to time sequence;
calculating the actual length of the cut continuous casting blank: l=d-L1; correcting the fixed-size length L0 of the fixed-size cutting device according to the actual length of the cut continuous casting billet;
when the cut continuous casting billet advances to the position of the distance meter, the cut continuous casting billet pushes the distance meter to rotate around the mounting shaft of the mounting device so as to allow the cut continuous casting billet to pass through; after the cut continuous casting billet completely passes through the position of the distance meter, the distance meter returns to the original position by means of gravity or spring force.
The trigger switch is an optical path sensor.
The distance meter is a laser distance meter.
The trigger switch and range finder response times are no greater than 7ms.
Or after the preset demarcation length is obtained, a distance meter arranged on a roller way obtains the current distance corresponding to the distance meter, wherein the current distance is the distance between the current distance meter and the cutting machine; determining a position point on a roller way, wherein the distance between the position point and the fixed-length cutting machine is the sum of the fixed-length specification and the preset length; controlling the selected range finders to move to the position points, and determining the range finders moving to the position points as range finders corresponding to the continuous casting billets to be cut; and measuring the fixed length of the continuous casting blank to be cut through the determined range finder and a range finder preset at the blank head of the cut continuous casting blank.
Measuring the distance between the distance meter and the billet head of the continuous casting billet to be cut through the distance meter;
the preset upstream ranging sensor measures the distance between the upstream ranging sensor and the starting point of the sizing cutter;
acquiring a determined distance between the range finder and the upstream range finding sensor;
obtaining the fixed-size length of the continuous casting blank to be cut through the following formula (1);
Li＝Dk-(LA+Lj)…(1)
in the formula (1), li is the specified length of the continuous casting billet to be cut, dk is the determined distance between the distance meter and the upstream distance measuring sensor, LA is the distance between the upstream distance measuring sensor and the starting point of the fixed-length cutting machine, and Lj is the determined distance between the distance meter and the billet head of the continuous casting billet to be cut.
The invention discloses the following technical effects: according to the invention, the trigger switch and the range finder are controlled by the synchronous trigger to respectively and simultaneously measure the length of the cut continuous casting blank, so that the product percent of pass is improved and the cost is reduced. The length of the cut continuous casting blank realized by the invention does not need to be stopped, and operators can pick out unqualified products before the cut continuous casting blank enters the next working procedure according to the measuring result output by the computer, thereby meeting the requirements of the continuous casting blank hot-feeding process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a method for measuring the fixed length of a continuous casting blank, which is characterized by comprising the following steps:
obtaining the fixed-length specification of a continuous casting blank to be cut;
obtaining a preset demarcation length, and setting the demarcation length according to the sizing specification of the continuous casting blank to be cut;
determining the horizontal distance D between the trigger switch and the distance meter in the advancing direction of the cut continuous casting billet according to the fixed length L0 of the cut continuous casting billet, and enabling D to be larger than L0;
the synchronous trigger controls the trigger switch to intermittently detect the trigger signal and synchronously controls the distance meter to measure the horizontal distance between the distance meter and the billet head or the billet tail of the cut continuous casting billet in the advancing direction of the cut continuous casting billet;
when the billet tail of the cut continuous casting billet moves to the position of the trigger switch or the billet head of the cut continuous casting billet moves to the position of the trigger switch, the trigger switch is triggered, the horizontal distance L1 between the distance meter and the billet head or the billet tail of the cut continuous casting billet in the advancing direction of the cut continuous casting billet is marked and stored according to time sequence;
calculating the actual length of the cut continuous casting blank: l=d-L1; correcting the fixed-size length L0 of the fixed-size cutting device according to the actual length of the cut continuous casting billet;
when the cut continuous casting billet advances to the position of the distance meter, the cut continuous casting billet pushes the distance meter to rotate around the mounting shaft of the mounting device so as to allow the cut continuous casting billet to pass through; after the cut continuous casting billet completely passes through the position of the distance meter, the distance meter returns to the original position by means of gravity or spring force.
The trigger switch is an optical path sensor.
The distance meter is a laser distance meter.
The trigger switch and range finder response times are no greater than 7ms.
In one embodiment of the invention, the light path sensor is arranged at the upstream of the bloom roller way, and the emitted light beam is vertical to the advancing direction of the cut continuous casting bloom; the laser distance measuring instrument is arranged at the downstream of the billet discharging roller way, and the emitted light beam is parallel to the advancing direction of the cut continuous casting billet.
Further, the photoelectric sensor is arranged at the downstream of the billet ejection roller way, and the emitted light beam is perpendicular to the advancing direction of the cut continuous casting billet; the laser distance measuring instrument is arranged at the upstream of the billet discharging roller way, and the emitted light beam is parallel to the advancing direction of the cut continuous casting billet.
In one embodiment of the invention, the device further comprises a mounting device; the distance meter is arranged on the mounting device and can rotate around a mounting shaft of the mounting device; when the cut continuous casting billet advances to the position of the distance meter, the cut continuous casting billet pushes the distance meter to rotate so as to allow the cut continuous casting billet to pass through; after the cut continuous casting billet completely passes through the position of the distance meter, the distance meter returns to the original position by means of gravity or spring force.
Or after the preset demarcation length is obtained, a distance meter arranged on a roller way obtains the current distance corresponding to the distance meter, wherein the current distance is the distance between the current distance meter and the cutting machine; determining a position point on a roller way, wherein the distance between the position point and the fixed-length cutting machine is the sum of the fixed-length specification and the preset length; controlling the selected range finders to move to the position points, and determining the range finders moving to the position points as range finders corresponding to the continuous casting billets to be cut; and measuring the fixed length of the continuous casting blank to be cut through the determined range finder and a range finder preset at the blank head of the cut continuous casting blank.
Measuring the distance between the distance meter and the billet head of the continuous casting billet to be cut through the distance meter;
the preset upstream ranging sensor measures the distance between the upstream ranging sensor and the starting point of the sizing cutter;
acquiring a determined distance between the range finder and the upstream range finding sensor;
obtaining the fixed-size length of the continuous casting blank to be cut through the following formula (1);
Li＝Dk-(LA+Lj)…(1)
in the formula (1), li is the specified length of the continuous casting billet to be cut, dk is the determined distance between the distance meter and the upstream distance measuring sensor, LA is the distance between the upstream distance measuring sensor and the starting point of the fixed-length cutting machine, and Lj is the determined distance between the distance meter and the billet head of the continuous casting billet to be cut.
Furthermore, since continuous casting billets with different sizing specifications can be produced, when the laser range finder corresponding to the continuous casting billets to be cut is determined, the demarcation length can be preset in the control terminal, and the demarcation length is used for dividing the continuous casting billets with different sizing specifications into two types, one type is the continuous casting billets with sizing specifications smaller than the demarcation length, and the other type is the continuous casting billets with sizing specifications larger than or equal to the demarcation length. In the embodiment of the present invention, the preset demarcation length may be a distance between a laser rangefinder and the sizing cutter, where the laser rangefinder is not the laser rangefinder farthest from the sizing cutter.
Furthermore, in the embodiment of the invention, the demarcation length can be set according to the sizing specification of the continuous casting blank to be cut. Setting the demarcation length as the sum of the fixed-length specification and the preset value of the continuous casting blank to be cut, and in order to ensure that the set demarcation length is smaller than the distance between the furthest laser range finder and the fixed-length cutting machine, presetting a plurality of preset values, when the demarcation length is set according to the fixed-length specification of the continuous casting blank to be cut, firstly determining the preset value which enables the demarcation length to be smaller than the distance between the furthest laser range finder and the fixed-length cutting machine, randomly selecting one preset value from the determined preset values, and setting the sum of the selected preset value and the fixed-length specification of the continuous casting blank to be cut as the demarcation length.
Further, the distance between each laser range finder arranged on the roller table and the fixed-length cutting machine is respectively obtained through the demarcation length, and the obtained distance corresponding to each laser range finder is respectively determined to be the fixed distance corresponding to each laser range finder; comparing the fixed-length specification and the demarcation length of the continuous casting blank to be cut, if the fixed-length specification is smaller than the demarcation length, selecting the laser range finder with the minimum fixed distance from the laser range finders with the fixed distance larger than the demarcation length, and determining the selected laser range finders as the laser range finders corresponding to the continuous casting blank to be cut; and if the fixed size is larger than or equal to the demarcation length, determining the laser range finder with the minimum fixed distance in the laser range finders with the fixed distance larger than the fixed size as the laser range finders corresponding to the continuous casting billets to be cut.
Further, a current distance corresponding to the laser distance meter is obtained through the laser distance meter arranged on the roller way, and the current distance is the distance between the current laser distance meter and the fixed-length cutting machine; selecting a laser range finder with the smallest difference between the current distance and the sizing specification from a plurality of laser range finders arranged on a roller way; determining a position point on a roller way, wherein the distance between the position point and the fixed-length cutting machine is the sum of fixed-length specifications and preset length; and controlling the selected laser rangefinder to move to the position point, and determining the laser rangefinder moving to the position point as the laser rangefinder corresponding to the continuous casting blank to be cut.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (6)
1. A method for measuring the specified length of a continuous casting billet, comprising the steps of:
obtaining the fixed-length specification of a continuous casting blank to be cut;
obtaining a preset demarcation length, and setting the demarcation length according to the sizing specification of the continuous casting blank to be cut;
determining the horizontal distance D between the trigger switch and the distance meter in the advancing direction of the cut continuous casting billet according to the fixed length L0 of the cut continuous casting billet, and enabling D to be larger than L0;
the synchronous trigger controls the trigger switch to intermittently detect the trigger signal and synchronously controls the distance meter to measure the horizontal distance between the distance meter and the billet head or the billet tail of the cut continuous casting billet in the advancing direction of the cut continuous casting billet;
when the billet tail of the cut continuous casting billet moves to the position of the trigger switch or the billet head of the cut continuous casting billet moves to the position of the trigger switch, the trigger switch is triggered, the horizontal distance L1 between the distance meter and the billet head or the billet tail of the cut continuous casting billet in the advancing direction of the cut continuous casting billet is marked and stored according to time sequence;
calculating the actual length of the cut continuous casting blank: l=d-L1; correcting the fixed-size length L0 of the fixed-size cutting device according to the actual length of the cut continuous casting billet;
when the cut continuous casting billet advances to the position of the distance meter, the cut continuous casting billet pushes the distance meter to rotate around the mounting shaft of the mounting device so as to allow the cut continuous casting billet to pass through; after the cut continuous casting billet completely passes through the position of the distance meter, the distance meter returns to the original position by means of gravity or spring force.
2. The method for measuring the specified length of a continuous casting billet according to claim 1, wherein: the trigger switch is an optical path sensor.
3. The method for measuring the specified length of a continuous casting billet according to claim 1, wherein: the distance meter is a laser distance meter.
4. The method for measuring the specified length of a continuous casting billet according to claim 1, wherein: the trigger switch and range finder response times are no greater than 7ms.
5. The method for measuring the specified length of a continuous casting billet according to claim 1, wherein: or after the preset demarcation length is obtained, a distance meter arranged on a roller way obtains the current distance corresponding to the distance meter, wherein the current distance is the distance between the current distance meter and the cutting machine; determining a position point on a roller way, wherein the distance between the position point and the fixed-length cutting machine is the sum of the fixed-length specification and the preset length; controlling the selected range finders to move to the position points, and determining the range finders moving to the position points as range finders corresponding to the continuous casting billets to be cut; and measuring the fixed length of the continuous casting blank to be cut through the determined range finder and a range finder preset at the blank head of the cut continuous casting blank.
6. The method for measuring the specified length of a continuous casting billet according to claim 5, wherein: measuring the distance between the distance meter and the billet head of the continuous casting billet to be cut through the distance meter;
the preset upstream ranging sensor measures the distance between the upstream ranging sensor and the starting point of the sizing cutter;
acquiring a determined distance between the range finder and the upstream range finding sensor;
obtaining the fixed-size length of the continuous casting blank to be cut through the following formula (1);
Li＝Dk-(LA+Lj)…(1)
in the formula (1), li is the specified length of the continuous casting billet to be cut, dk is the determined distance between the distance meter and the upstream distance measuring sensor, LA is the distance between the upstream distance measuring sensor and the starting point of the fixed-length cutting machine, and Lj is the determined distance between the distance meter and the billet head of the continuous casting billet to be cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311167682.0A CN117190877A (en) | 2023-09-11 | 2023-09-11 | Method for measuring fixed length of continuous casting billet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311167682.0A CN117190877A (en) | 2023-09-11 | 2023-09-11 | Method for measuring fixed length of continuous casting billet |
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| CN202311167682.0A Pending CN117190877A (en) | 2023-09-11 | 2023-09-11 | Method for measuring fixed length of continuous casting billet |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772443A (en) * | 2015-04-09 | 2015-07-15 | 田志恒 | Fixed-length measurement system and method for continuous casting billet |
| CN104848793A (en) * | 2015-06-01 | 2015-08-19 | 衡阳镭目科技有限责任公司 | Method and system for on-line measurement of length of cut continuous casting blank in high-speed conveying state |
| CN105136040A (en) * | 2015-07-24 | 2015-12-09 | 衡阳镭目科技有限责任公司 | Method of measuring cut-length of continuous casting slab and device |
| CN109470153A (en) * | 2018-12-10 | 2019-03-15 | 上海鼎经自动化科技有限公司 | A method of measurement continuous casting billet length and width |
| CN210498299U (en) * | 2019-06-21 | 2020-05-12 | 阳春新钢铁有限责任公司 | Device for weighing continuous casting billet on line |
-
2023
- 2023-09-11 CN CN202311167682.0A patent/CN117190877A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772443A (en) * | 2015-04-09 | 2015-07-15 | 田志恒 | Fixed-length measurement system and method for continuous casting billet |
| CN104848793A (en) * | 2015-06-01 | 2015-08-19 | 衡阳镭目科技有限责任公司 | Method and system for on-line measurement of length of cut continuous casting blank in high-speed conveying state |
| CN105136040A (en) * | 2015-07-24 | 2015-12-09 | 衡阳镭目科技有限责任公司 | Method of measuring cut-length of continuous casting slab and device |
| CN109470153A (en) * | 2018-12-10 | 2019-03-15 | 上海鼎经自动化科技有限公司 | A method of measurement continuous casting billet length and width |
| CN210498299U (en) * | 2019-06-21 | 2020-05-12 | 阳春新钢铁有限责任公司 | Device for weighing continuous casting billet on line |
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