CN112013767A - Sewing head detection device for aluminum strips and implementation method - Google Patents
Sewing head detection device for aluminum strips and implementation method Download PDFInfo
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- CN112013767A CN112013767A CN202011012024.0A CN202011012024A CN112013767A CN 112013767 A CN112013767 A CN 112013767A CN 202011012024 A CN202011012024 A CN 202011012024A CN 112013767 A CN112013767 A CN 112013767A
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- aluminum strip
- working roll
- range finder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- Length Measuring Devices By Optical Means (AREA)
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Abstract
The invention provides a sewing head detection device for an aluminum strip and an implementation method, which are used for detecting the sewing head of the aluminum strip subjected to sewing treatment during conveying, wherein the detection device comprises a PLC (programmable logic controller), a first working roll, a second working roll, a first laser range finder and a second laser range finder; the first working roll and the second working roll are combined into an aluminum strip conveying structure; the aluminum strip transmission structure enables the aluminum strip to be attached to the detection position of the roll surface of the working roll; the first laser range finder and the second laser range finder are arranged beside the detection position of the roller surface; the PLC measures the distance through a first laser distance meter and a second laser distance meter, and when the fluctuation range of the distance measurement data of the first laser distance meter is greater than or equal to a threshold value at the same time, the PLC judges that the sewing head of the aluminum strip is located at a detection position; the method can be used for revising the position of the strip sewing head in real time when the aluminum strip transportation tracking system works, so that the accumulated error of the strip tracking system in the running process is reduced.
Description
Technical Field
The invention relates to an aluminum strip processing technology, in particular to a sewing head detection device for an aluminum strip and an implementation method.
Background
In the continuous production line of aluminum materials and steel materials, not only the strip materials are longer in the production line, but also the production line belongs to continuous production equipment without stopping. The device functions related in the continuous production line are rich, different functions are selected according to different processes for incoming materials, the process routes of front and back strips are different, the strip tracking system uses an encoder to calculate, the accurate control of the position of the sewing head by the input of the device functions has great requirements, the sewing head detection device for the aluminum strips can be used for revising the position of the strip sewing head in the strip tracking system, and the accumulated error of the strip tracking system in the operation process is reduced.
Disclosure of Invention
The invention provides a sewing head detection device for an aluminum strip and an implementation method, which can be used for revising the position of a strip sewing head in real time when an aluminum strip transportation tracking system works, so that the accumulated error of the strip tracking system in the operation process is reduced.
The invention adopts the following technical scheme.
A sewing head detection device for an aluminum strip is used for detecting the sewing head of the aluminum strip after sewing treatment during conveying, and comprises a PLC, a first working roll (21), a second working roll (22), a first laser range finder (11) and a second laser range finder (12); the first working roll and the second working roll are combined into an aluminum strip conveying structure; the aluminum strip transmission structure enables the aluminum strip to be attached to the detection position (4) of the roll surface of the working roll; the first laser range finder and the second laser range finder are arranged beside the detection position of the roller surface; the PLC carries out distance measurement through the first laser distance measuring instrument and the second laser distance measuring pair, and when the fluctuation range of the distance measurement data of the first laser distance measuring instrument is larger than or equal to the threshold value at the same time, the PLC judges that the sewing head of the aluminum strip is located at the detection position.
The transmission path of the aluminum strip in the aluminum strip transmission structure is S-shaped.
The two superposed aluminum strips sewn at the sewing head are respectively belonged to a front section aluminum strip and a rear section aluminum strip, the width ranges of the front section aluminum strip and the rear section aluminum strip are Wmin-Wmax, and the thickness ranges of the front section aluminum strip and the rear section aluminum strip are tmin-tmax.
And when the fluctuation range of the ranging data of the first laser range finder is simultaneously greater than or equal to the threshold tmin, the PLC judges that the sewing head of the aluminum strip is positioned at the detection position.
The detection position is positioned at the second working roll; one side of the aluminum strip at the detection position is positioned at the side A of the operation side of the second working roll, and the other side of the aluminum strip is positioned at the side B of the transmission side of the second working roll.
A detection point of the first laser range finder on the surface of the aluminum strip is a first detection point, a detection point of the second laser range finder on the surface of the aluminum strip is a second detection point, and the distance between the first detection point and the second detection point is not more than 90% of Wmin; the distances between the first detection point and the second detection point and the edge of the aluminum strip are not less than 5% so as to avoid the edge defect of the aluminum strip.
The first working roll and the second working roll have the same size and specification; d is the diameter of the working roll, r is the radius of the working roll, T1 is the distance between the measuring part of the first laser range finder and the surface of the aluminum strip, T2 is the distance between the measuring part of the second laser range finder and the surface of the aluminum strip, L is the distance between the measuring part of the first laser range finder and the measuring part of the second laser range finder relative to the roll center of the second working roll, the thickness of the front section of aluminum strip is T1, the thickness of the rear section of aluminum strip is T2, and the thickness of the aluminum strip measured at the detection position by the first laser range finder and the second laser range finder is T; when the suture head is located at the detection position, T-T1 + T2; when the suture head is not located at the detection position, T is equal to T1 or T2.
When the detection device monitors the aluminum strip sewing head, the first laser distance meter is positioned on the transmission side of the second working roll, the measured thickness T1= L-r-T of the aluminum strip, the second laser distance meter is positioned on the operation side of the second working roll, and the measured thickness T2= L-r-T of the aluminum strip; when T1 and T2 are simultaneously greater than or equal to tmin, the PLC judges that the sewing head of the aluminum strip is positioned at the detection position.
The molding equipment of the sewing head comprises a sewing machine mold; the length of the sewing head is L, and the unit is millimeter; the maximum linear speed of the aluminum strip conveying structure for conveying the aluminum strip is Vmax, and the unit is meter/minute;
the PLC is internally stored with a delayer time s which can be used for verifying the judgment result of the sewing head; s = L/1000/Vmax in points; when the detection device monitors the sewing head of the aluminum strip, when T1 and T2 are simultaneously greater than or equal to tmin and the duration of the measurement result is not less than s, the PLC judges that the sewing head of the aluminum strip is located at the detection position.
When the PLC has a cycle scanning period Cmin-Cmax and the cycle scanning period ranges from 1 ms to 100ms, the time delay s is subjected to shrinkage compensation to compensate the cycle scanning period time of the controller and is shortened to be twice of the longest cycle scanning period time, namely s =2 Cmax.
When the method is used for detecting, the specific thickness of the aluminum strip does not need to be known, and the sewing head can be detected only by the condition that the data fluctuation of the two distance meters is greater than the threshold value at the same time, so that the method is more convenient to use.
The invention takes the transmission time of the sewing head, namely the time s of the delayer as the inspection data, and can reduce the misjudgment caused by the bad plate surface of the strip.
The invention can be used for repairing the position of the strip sewing head in the strip tracking system, thereby reducing the accumulated error of the strip tracking system in the operation process.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic view of an aluminum strip seaming head;
in the figure: 1-an aluminum strip; 2-front section aluminum strip; 3-rear section aluminum strip; 4-detection position; 5-sewing the head; 11-a first laser rangefinder; 12-a second laser rangefinder; 21-a first work roll; 22-second work roll.
Detailed Description
As shown in the figure, the sewing head detection device for the aluminum strip 1 is used for detecting the sewing head 5 of the aluminum strip subjected to sewing treatment during conveying, and comprises a PLC, a first working roll 21, a second working roll 22, a first laser distance meter 11 and a second laser distance meter 12; the first working roll and the second working roll are combined into an aluminum strip conveying structure; the aluminum strip transmission structure enables the aluminum strip to be attached to the detection position 4 of the roll surface of the working roll; the first laser range finder and the second laser range finder are arranged beside the detection position of the roller surface; the PLC carries out distance measurement through the first laser distance measuring instrument and the second laser distance measuring pair, and when the fluctuation range of the distance measurement data of the first laser distance measuring instrument is larger than or equal to the threshold value at the same time, the PLC judges that the sewing head of the aluminum strip is located at the detection position.
The transmission path of the aluminum strip in the aluminum strip transmission structure is S-shaped.
The two aluminum strips sewn and superposed at the sewing head are respectively attached to the front section aluminum strip 2 and the rear section aluminum strip 3, the width ranges of the front section aluminum strip and the rear section aluminum strip are Wmin-Wmax, and the thickness ranges of the front section aluminum strip and the rear section aluminum strip are tmin-tmax.
And when the fluctuation range of the ranging data of the first laser range finder is simultaneously greater than or equal to the threshold tmin, the PLC judges that the sewing head of the aluminum strip is positioned at the detection position.
The detection position is positioned at the second working roll; one side of the aluminum strip at the detection position is positioned at the side A of the operation side of the second working roll, and the other side of the aluminum strip is positioned at the side B of the transmission side of the second working roll.
A detection point of the first laser range finder on the surface of the aluminum strip is a first detection point, a detection point of the second laser range finder on the surface of the aluminum strip is a second detection point, and the distance between the first detection point and the second detection point is not more than 90% of Wmin; the distances between the first detection point and the second detection point and the edge of the aluminum strip are not less than 5% so as to avoid the edge defect of the aluminum strip.
The first working roll and the second working roll have the same size and specification; d is the diameter of the working roll, r is the radius of the working roll, T1 is the distance between the measuring part of the first laser range finder and the surface of the aluminum strip, T2 is the distance between the measuring part of the second laser range finder and the surface of the aluminum strip, L is the distance between the measuring part of the first laser range finder and the measuring part of the second laser range finder relative to the roll center of the second working roll, the thickness of the front section of aluminum strip is T1, the thickness of the rear section of aluminum strip is T2, and the thickness of the aluminum strip measured at the detection position by the first laser range finder and the second laser range finder is T; when the suture head is located at the detection position, T-T1 + T2; when the suture head is not located at the detection position, T is equal to T1 or T2.
When the detection device monitors the aluminum strip sewing head, the first laser distance meter is positioned on the transmission side of the second working roll, the measured thickness T1= L-r-T of the aluminum strip, the second laser distance meter is positioned on the operation side of the second working roll, and the measured thickness T2= L-r-T of the aluminum strip; when T1 and T2 are simultaneously greater than or equal to tmin, the PLC judges that the sewing head of the aluminum strip is positioned at the detection position.
The molding equipment of the sewing head comprises a sewing machine mold; the length of the sewing head is L, and the unit is millimeter; the maximum linear speed of the aluminum strip conveying structure for conveying the aluminum strip is Vmax, and the unit is meter/minute;
the PLC is internally stored with a delayer time s which can be used for verifying the judgment result of the sewing head; s = L/1000/Vmax in points; when the detection device monitors the sewing head of the aluminum strip, when T1 and T2 are simultaneously greater than or equal to tmin and the duration of the measurement result is not less than s, the PLC judges that the sewing head of the aluminum strip is located at the detection position.
When the PLC has a cycle scanning period Cmin-Cmax and the cycle scanning period ranges from 1 ms to 100ms, the time delay s is subjected to shrinkage compensation to compensate the cycle scanning period time of the controller and is shortened to be twice of the longest cycle scanning period time, namely s =2 Cmax.
Example (b):
when calculating the reduction compensation of the time delay device time s, the length of the suture head is 600mm, the aluminum strip transmission speed is Vmax =60m/min, s = L/1000/Vmax =0.01(min), 0.6s after converting unit second, and finally the time delay device time s =0.6-2Cmax/1000= 0.4(s).
Claims (10)
1. A sewing head detection device for an aluminum strip is used for detecting the sewing head of the aluminum strip after sewing treatment during conveying, and is characterized in that: the detection device comprises a PLC, a first working roll (21), a second working roll (22), a first laser range finder (11) and a second laser range finder (12); the first working roll and the second working roll are combined into an aluminum strip conveying structure; the aluminum strip transmission structure enables the aluminum strip to be attached to the detection position (4) of the roll surface of the working roll; the first laser range finder and the second laser range finder are arranged beside the detection position of the roller surface; the PLC carries out distance measurement through the first laser distance measuring instrument and the second laser distance measuring pair, and when the fluctuation range of the distance measurement data of the first laser distance measuring instrument is larger than or equal to the threshold value at the same time, the PLC judges that the sewing head of the aluminum strip is located at the detection position.
2. The apparatus of claim 1, wherein: the transmission path of the aluminum strip in the aluminum strip transmission structure is S-shaped.
3. The apparatus of claim 1, wherein: the two superposed aluminum strips sewn at the sewing head are respectively belonged to a front section aluminum strip and a rear section aluminum strip, the width ranges of the front section aluminum strip and the rear section aluminum strip are Wmin-Wmax, and the thickness ranges of the front section aluminum strip and the rear section aluminum strip are tmin-tmax.
4. The seaming head detection apparatus for an aluminum strip according to claim 3, wherein: and when the fluctuation range of the ranging data of the first laser range finder is simultaneously greater than or equal to the threshold tmin, the PLC judges that the sewing head of the aluminum strip is positioned at the detection position.
5. The seaming head detection apparatus for an aluminum strip according to claim 5, wherein: the detection position is positioned at the second working roll; one side of the aluminum strip at the detection position is positioned at the side A of the operation side of the second working roll, and the other side of the aluminum strip is positioned at the side B of the transmission side of the second working roll.
6. The seaming head detection apparatus for an aluminum strip according to claim 6, wherein: a detection point of the first laser range finder on the surface of the aluminum strip is a first detection point, a detection point of the second laser range finder on the surface of the aluminum strip is a second detection point, and the distance between the first detection point and the second detection point is not more than 90% of Wmin; the distances between the first detection point and the second detection point and the edge of the aluminum strip are not less than 5% so as to avoid the edge defect of the aluminum strip.
7. The seaming head detection apparatus for an aluminum strip according to claim 6, wherein: the first working roll and the second working roll have the same size and specification; d is the diameter of the working roll, r is the radius of the working roll, T1 is the distance between the measuring part of the first laser range finder and the surface of the aluminum strip, T2 is the distance between the measuring part of the second laser range finder and the surface of the aluminum strip, L is the distance between the measuring part of the first laser range finder and the measuring part of the second laser range finder relative to the roll center of the second working roll, the thickness of the front section of aluminum strip is T1, the thickness of the rear section of aluminum strip is T2, and the thickness of the aluminum strip measured at the detection position by the first laser range finder and the second laser range finder is T; when the suture head is located at the detection position, T-T1 + T2; when the suture head is not located at the detection position, T is equal to T1 or T2.
8. The apparatus of claim 7, wherein: when the detection device monitors the aluminum strip sewing head, the first laser distance meter is positioned on the transmission side of the second working roll, the measured thickness T1= L-r-T of the aluminum strip, the second laser distance meter is positioned on the operation side of the second working roll, and the measured thickness T2= L-r-T of the aluminum strip; when T1 and T2 are simultaneously greater than or equal to tmin, the PLC judges that the sewing head of the aluminum strip is positioned at the detection position.
9. The apparatus of claim 8, wherein: the molding equipment of the sewing head comprises a sewing machine mold; the length of the sewing head is L, and the unit is millimeter; the maximum linear speed of the aluminum strip conveying structure for conveying the aluminum strip is Vmax, and the unit is meter/minute;
the PLC is internally stored with a delayer time s which can be used for verifying the judgment result of the sewing head; s = L/1000/Vmax in points; when the detection device monitors the sewing head of the aluminum strip, when T1 and T2 are simultaneously greater than or equal to tmin and the duration of the measurement result is not less than s, the PLC judges that the sewing head of the aluminum strip is located at the detection position.
10. The apparatus of claim 9, wherein: when the PLC has a cycle scanning period Cmin-Cmax and the cycle scanning period ranges from 1 ms to 100ms, the time delay s is subjected to shrinkage compensation to compensate the cycle scanning period time of the controller and is shortened to be twice of the longest cycle scanning period time, namely s =2 Cmax.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011012024.0A CN112013767A (en) | 2020-09-24 | 2020-09-24 | Sewing head detection device for aluminum strips and implementation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011012024.0A CN112013767A (en) | 2020-09-24 | 2020-09-24 | Sewing head detection device for aluminum strips and implementation method |
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| Publication Number | Publication Date |
|---|---|
| CN112013767A true CN112013767A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011012024.0A Pending CN112013767A (en) | 2020-09-24 | 2020-09-24 | Sewing head detection device for aluminum strips and implementation method |
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| Country | Link |
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| CN (1) | CN112013767A (en) |
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- 2020-09-24 CN CN202011012024.0A patent/CN112013767A/en active Pending
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