CN111238420B - Online monitoring device and monitoring method for curvature of external wall panel - Google Patents
Online monitoring device and monitoring method for curvature of external wall panel Download PDFInfo
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- CN111238420B CN111238420B CN202010096390.2A CN202010096390A CN111238420B CN 111238420 B CN111238420 B CN 111238420B CN 202010096390 A CN202010096390 A CN 202010096390A CN 111238420 B CN111238420 B CN 111238420B
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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
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
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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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
Abstract
The embodiment of the invention discloses an on-line monitoring device for the curvature of an external wall panel, which comprises a group of width measuring mechanisms and flatness measuring mechanisms, wherein the width measuring mechanisms are oppositely arranged on two sides of a conveying chain of the external wall panel, the flatness measuring mechanisms are respectively arranged above the width measuring mechanisms, the width measuring mechanisms are used for calculating the width between two parallel side edges of the external wall panel and monitoring the curvature of the side surface of the external wall panel through the change of the width, and the flatness measuring mechanisms are used for calculating the height of the upper surface of the external wall panel and monitoring the curvature of the surface of the external wall panel through the change; presetting a relational expression between the data of the online monitoring device and the width and the height of the external wall panel; simultaneously generating a width two-dimensional information graph and a height two-dimensional information graph of the external wall panel in a coordinate system; calculating the curvature of the external wall panel according to the monitoring result; this scheme can realize the on-line measuring to the side of outer wallboard and surface crookedness, and the production efficiency of outer wallboard is high to production quality is stable.
Description
Technical Field
The embodiment of the invention relates to the technical field of external wall panel production lines, in particular to an external wall panel curvature online monitoring device and a monitoring method.
Background
The exterior wall cladding is a kind of building material, which is a building board used for exterior wall. The exterior wall cladding has the basic performances of corrosion resistance, high temperature resistance, ageing resistance, no radiation, fire resistance, insect prevention, no deformation and the like, and simultaneously requires attractive appearance, simple and convenient construction, environmental protection, energy conservation and the like. Common exterior wall cladding panels include fiber cement panels, aluminum-plastic panels, PVC panels, stone materials, and the like.
The inner side of the PVC outer wall cladding can be very conveniently provided with heat insulation materials such as polystyrene foam and the like, so that the heat insulation materials with better outer wall heat insulation effect are like a 'cotton-padded coat' which is worn on a house, and the PVC cladding is a 'jacket'; the metal exterior wall cladding integrates the heat insulation material polyurethane and the metal steel plate, the heat insulation effect depends on the thickness of the heat insulation material, and all the exterior wall cladding types have the effects of resisting severe cold and severe summer heat, durability, ultraviolet resistance and aging resistance. Has good corrosion resistance to acid, alkali, salt and humid areas. No pollution and can be recycled; the environmental protection performance is good. Easy cleaning and no need of later maintenance.
But at present do not realize the online real-time supervision of crookedness in outer wallboard production process, the crookedness monitoring is after the board is produced, uses the aluminium guiding rule, leans on the board edge and monitors the board straightness to guiding rule monitoring data error is big, therefore outer wallboard's production efficiency is low, and production quality is unstable.
Disclosure of Invention
Therefore, the embodiment of the invention provides an external wall panel curvature online monitoring device and a monitoring method, wherein the width between two parallel side edges of an external wall panel is detected, the height of the upper surface of the external wall panel is detected, the whole curvature of the external wall panel is detected online, the acquired data error is small, and the problems that online real-time monitoring cannot be realized and the error of the guiding rule monitoring data is large in the prior art are solved.
In order to achieve the above object, an embodiment of the present invention provides the following: the utility model provides an external wall panel crookedness on-line monitoring device, includes a set of relative installation and carries the width measurement mechanism of chain both sides at the external wall panel to and set up respectively the planarization measuring mechanism of width measurement mechanism top, width measurement mechanism is used for calculating the width between two parallel sides of external wall panel and monitors through the change of width the side crookedness of external wall panel, the planarization measuring mechanism is used for calculating the upper surface height of external wall panel and monitors through the altitude variation the surface crookedness of external wall panel.
As a preferred scheme of the invention, the width measuring mechanism comprises cut-off mounting plates arranged at two sides of the external wall panel conveying chain, width laser range finders which are relatively parallel and used for detecting the width of the external wall panel are arranged on the cut-off mounting plates, and an included angle between a connecting line of the two width laser range finders and the transmission direction of the external wall panel conveying chain is 91-93 degrees.
As a preferred scheme of the invention, the flatness measuring mechanism comprises an inverted L-shaped mounting plate arranged above the width laser range finder, a height laser range finder for detecting the surface curvature of the external wall panel is mounted on an upper plate of the inverted L-shaped mounting plate, an open hole groove is vertically formed in a side plate of the inverted L-shaped mounting plate, a probe which is level with the height of the upper surface of the external wall panel is connected in the open hole groove through a T-shaped plate, a parallel wing plate is arranged on the probe outside the side edge of the external wall panel, and the laser emission position of the height laser range finder is opposite to the parallel wing plate.
As a preferable scheme of the invention, one side edge of the T-shaped plate is provided with a vertical rack, the inner wall of the open hole groove is provided with a gear which is meshed with the vertical rack through a fixed rotating shaft, the inner wall of the open hole groove is provided with a limiting sliding groove used for limiting the linear movement of the T-shaped plate at the position opposite to the gear, the central position of the gear freely rotates around the fixed rotating shaft, the side edge of one gear is provided with a locking cylinder, the tail end of a piston rod of the locking cylinder is provided with an arc-shaped clamping plate, the arc-shaped clamping plate stops the rotation of the gear by extruding the gear, the telescopic work of the locking cylinder is triggered by an output signal of the width laser range finder, the width laser range finder detects the external wall plate on the external wall plate conveying chain, and the piston rod of the locking cylinder retracts inwards, the width laser range finder detects the clearance between two side fascia on the side fascia conveyor chain, the piston rod of locking cylinder stretches out outwards.
In addition, the invention also provides an on-line monitoring device method for the bending degree of the external wall panel, which comprises the following steps:
step 100, debugging an external wall panel bending online monitoring device, and presetting a relational expression between data of the online monitoring device and the width and height of the external wall panel;
200, monitoring the width information and the height information of the external wall panel on line in real time, and simultaneously generating a width two-dimensional information graph and a height two-dimensional information graph of the external wall panel in a coordinate system;
step 300, calibrating the width information within the detection time range of the external wall panel according to the width information and the height information of the same time point, and filtering and removing the height information outside the detection time range of the external wall panel;
and step 400, calculating the curvature of the external wall panel according to the monitoring result, and determining the flatness performance of the external wall panel.
As a preferred embodiment of the present invention, in step 100, the relationship between the online monitoring device data and the width of the external wall panel is specifically: w-L-x 1-x 2; wherein w is the width of the external wall panel, L is the vertical distance between the on-line detection devices arranged at the two side edges of the external wall panel, x1 is the real-time vertical distance between the on-line detection device at one side and the external wall panel, and x2 is the real-time vertical distance between the on-line detection device at the other side and the external wall panel.
As a preferred embodiment of the present invention, in step 100, the relationship between the online monitoring device data and the height of the external wall panel is specifically: h-y; wherein H is the height of side fascia, H is the vertical distance between the online detection device of setting in side fascia top and the side fascia conveyor chain, and y is the real-time vertical distance between the online detection device of side fascia top and the side fascia upper surface.
As a preferred embodiment of the present invention, in step 200, the abscissa of the width two-dimensional information graph is the detection time of the online monitoring device, the ordinate is the width of the exterior wall panel detected by the online monitoring device, the abscissa of the height two-dimensional information graph is the detection time of the online monitoring device, the ordinate is the height of the exterior wall panel detected by the online monitoring device, and the time points corresponding to the abscissas of the width two-dimensional information graph and the height two-dimensional information graph coincide with each other.
As a preferred embodiment of the present invention, in the detection time of a single external wall panel, when the width w of the external wall panel is detected to be less than half of the standard width of the external wall panel, the online monitoring device for detecting the lateral bending of the external wall panel sets the width w of the external wall panel detected at this time to be the standard width of the external wall panel.
As a preferable aspect of the present invention, the curvature is divided into a side curvature representing a width of the exterior wall panel and a surface curvature representing a surface of the exterior wall panel;
the calculation formula of the side bending degree is as follows: q ═ wMaximum and minimum－wMinimum size)/wStandard of meritWherein Q denotes the degree of lateral curvature, wMaximum and minimumDenotes the maximum width of the outer wall panel, wMinimum sizeDenotes the minimum width of the outer wall panel, wStandard of meritStandard specification for representing the width of the external wall panel;
the calculation formula of the surface curvature is as follows: p ═ hMaximum and minimum－hMinimum size)/hStandard of meritWherein P represents the degree of surface curvature, hMaximum and minimumDenotes the maximum height of the external wall panel, hMinimum sizeDenotes the minimum height of the exterior wall panel, hStandard of meritStandard specifications for the height of the exterior wall panel are shown.
The embodiment of the invention has the following advantages:
(1) according to the invention, the width between two parallel side edges of the external wallboard is detected, and the height of the upper surface of the external wallboard is detected, so that the on-line detection of the whole bending degree of the external wallboard is realized, the production efficiency of the external wallboard is high, and the production quality is stable;
(2) according to the invention, the height detection and the width detection are combined, and the measurement results of the height and the width at corresponding time points are calibrated mutually, so that the time period of the corresponding detection external wall panel is determined, the error data in the filtering detection process is eliminated, and the error of the calculation result of the curvature is small.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic structural diagram of an on-line detection device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a T-shaped board mounting structure according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of an online monitoring method according to an embodiment of the present invention.
In the figure:
1-a width measuring mechanism; 2-a flatness measuring mechanism; 3-vertical rack; 4-fixing the rotating shaft; 5-a gear; 6-locking the cylinder; 7-arc-shaped clamping plates; 8-a limiting chute;
101-a cut-off mounting plate; 102-width laser rangefinder;
201-inverted L-shaped mounting plate; 202-height laser rangefinder; 203-open pore groove; 204-T shaped plate; 205-a probe; 206-parallel wings.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the invention provides an online monitoring device for the curvature of an external wallboard, which is implemented by detecting the width between two parallel side edges of the external wallboard and the height of the upper surface of the external wallboard, so as to realize the online detection of the whole curvature of the external wallboard, the smaller the change amplitude of the measurement data of the width detection and the height detection is, the better the plate straightness is, the qualified the external wallboard is produced, the larger the change amplitude of the measurement data is, the better the plate straightness is, the S-shaped exists, the unqualified external wallboard is, and the unqualified external wallboard needs to be recycled to a mixing roll for re-extrusion.
Specifically including a set of width measurement mechanism 1 of installing relatively in side fascia conveyor chain both sides to and set up respectively the planarization measuring mechanism 2 of width measurement mechanism 1 top, width measurement mechanism 1 is used for calculating the width between two parallel sides of side fascia and monitors through the change of width the side crookedness of side fascia, planarization measuring mechanism 2 is used for calculating the upper surface height of side fascia and monitors through the altitude variation the surface crookedness of side fascia.
The width measuring mechanism 1 comprises stop mounting plates 101 arranged on two sides of the outer wall panel conveying chain, width laser range finders 102 which are relatively parallel and used for detecting the width of the outer wall panel are arranged on the stop mounting plates 101, and an included angle between a connecting line of the two width laser range finders 102 and the transmission direction of the outer wall panel conveying chain is 91-93 degrees.
Two width laser range finders 102 that are used for detecting the external wall panel width change of this embodiment are not just to distributing, and two width laser range finders 102 misplace slightly, thereby when width laser range finder 102 detects the interval between two external wall panel heads and tails, width laser range finder 102's detection distance is two distances between the end mounting panel 101, when width laser range finder 102 detected the side of external wall panel, width laser range finder 102's detection distance is the distance between width laser range finder 102's the laser emission point to the side of external wall panel.
Thereby ensure width laser range finder 102's output data's stability, output data is disorderly when avoiding width laser range finder 102 to measure the interval between two side fascia heads and tails, and the convenience is unified filters and gets rid of to distinguish width laser range finder 102's detection data.
The probe 205 of this embodiment can move linearly up and down in the open hole groove 203 of the inverted L-shaped installation plate 201 through the T-shaped plate, so the probe 205 always contacts the external wall plate and floats up and down along with the surface flatness of the external wall plate, and the height laser range finder 202 detects the surface curvature of the external wall plate by calculating the distance between the laser emission point and the parallel wing plate 206 on the probe 205.
Therefore, the width laser range finder 102 of the present embodiment is used for detecting the side bending degree of the exterior wall panel, but when the upper and lower surfaces of the exterior wall panel are bent and the bending degree is large, the difference between the measurement result of the width laser range finder 102 at this time and the measurement result of the side of the exterior wall panel detected normally is large, and therefore the complete side bending condition of the exterior wall panel and the surface bending condition of the exterior wall panel cannot be determined only by the inability of the width laser range finder 102.
This embodiment passes through height laser range finder 202 and width laser range finder 102's combined use, confirms on the one hand that the outer wall panel side crookedness in to the outer wall panel testing process changes, and on the other hand also can confirm that the upper surface crookedness of outer wall panel changes.
This embodiment realizes the on-line monitoring to the side fascia on the side fascia conveyor chain, it is well known, when the side fascia is carried on the conveyor chain, there is the interval between two adjacent side fascia heads and tails, because probe 205 passes through T word board can be linear motion from top to bottom in the opening hole groove 203 of the L shape dress board 201 of inversion, in order to avoid probe 205 to have the interval between two side fascia heads and tails and move down the position excessively low and lead to unable normal surface curvature monitoring to carrying out to next side fascia, this embodiment carries out intermittent type fixed to probe 205, guarantee probe 205 to the normal monitoring of side fascia surface crookedness.
The specific implementation structure is as follows: one side of the T-shaped plate 204 is provided with a vertical rack 3, the inner wall of the open hole groove 203 is provided with a gear 5 which is meshed with the vertical rack 3 through a fixed rotating shaft 4, the inner wall of the open hole groove 203 is provided with a limiting sliding groove 8 which is used for limiting the linear movement of the T-shaped plate 204 at the opposite position of the gear 5, the central position of the gear 5 freely rotates around the fixed rotating shaft 4, one side of the gear 5 is provided with a locking cylinder 6, the tail end of a piston rod of the locking cylinder 6 is provided with an arc clamping plate 7, and the arc clamping plate 7 extrudes the gear 5 to stop the rotation of the gear 5.
The principle that the probe 205 can monitor the curvature of the surface of the external wall panel is that the supporting force of the external wall panel to the probe 205 is equal to and opposite to the gravity of the probe 205, the parallel wing plate 206 and the T-shaped plate, so that the probe 205 can ensure stable linear movement.
When the surface of the outer wall plate is concave downwards, the probe 205 moves downwards along with the outer wall plate, and the T-shaped plate 204 moves downwards linearly through the meshing of the vertical rack 3 and the gear 5, so that the real-time monitoring of the surface curvature of the outer wall plate is ensured.
Similarly, when the surface of the outer wall board is convex upwards, the probe 205 moves upwards accordingly, and the T-shaped board 204 moves upwards linearly through the meshing of the vertical rack 3 and the gear 5, so that the real-time monitoring of the curvature of the surface of the outer wall board is ensured.
After the height laser range finder 202 completely detects an external wall panel, the force balance of the probe 205 is broken, if no external supporting function is added, the probe 205 continues to move downwards until contacting the surface of the conveying chain, and in order to ensure the online detection work of the probe 205, the probe 205 is fixed and stopped by the locking cylinder 6 in the embodiment.
The flexible work of locking cylinder 6 is triggered by width laser range finder's 102 output signal, width laser range finder 102 detects the side fascia on the side fascia conveyor chain, the piston rod of locking cylinder 6 inwards contracts, width laser range finder 102 detects the clearance between two side fascia on the side fascia conveyor chain, the piston rod of locking cylinder 6 outwards stretches out.
The height laser range finder 202 is arranged right above the width laser range finder 102, so when the width laser range finder 102 detects the existence of an external wall panel, the probe 205 can work normally, the piston rod of the locking cylinder 6 retracts inwards, and the movable displacement control of the T-shaped panel is removed.
Because the speed of drive chain is certain, therefore this embodiment stretches out fixed specifically width laser range finder 102 to the check-out time of an external wall panel to the piston rod of locking cylinder 6, and height laser range finder 202 is definite to the check-out time of an external wall panel, when width laser range finder 102's measuring time accomplishes the check-out time to an external wall body, need fix probe 205, and the piston rod of locking cylinder 6 outwards stretches out, realizes the activity of T word board fixed.
Therefore, the width between the two parallel sides of the outer wallboard is detected through the method, the height of the upper surface of the outer wallboard is detected, the online detection of the whole bending degree of the outer wallboard is realized, and the online continuous detection of the bending degree of the upper surface of the outer wallboard is ensured through the original position of the control probe 205.
In addition, as shown in fig. 3, the invention also provides an external wall panel bending online monitoring device and method, comprising the following steps:
step 100, debugging the external wall panel bending online monitoring device, and presetting a relational expression between data of the online monitoring device and the width and height of the external wall panel.
The relation between the data of the on-line monitoring device and the width of the external wall panel is specifically as follows: w-L-x 1-x 2; wherein w is the width of the external wall panel, L is the vertical distance between the on-line detection devices arranged at the two side edges of the external wall panel, x1 is the real-time vertical distance between the on-line detection device at one side and the external wall panel, and x2 is the real-time vertical distance between the on-line detection device at the other side and the external wall panel.
The relation between the data of the on-line monitoring device and the height of the external wall panel is specifically as follows: h-y; wherein H is the height of side fascia, H is the vertical distance between the online detection device of setting in side fascia top and the side fascia conveyor chain, and y is the real-time vertical distance between the online detection device of side fascia top and the side fascia upper surface.
200, monitoring the width information and the height information of the external wall panel on line in real time, and generating a width two-dimensional information map and a height two-dimensional information map of the external wall panel in the same coordinate system.
The horizontal coordinate of the width two-dimensional information graph is the detection time of the online monitoring device, the vertical coordinate of the width two-dimensional information graph is the width of the external wall panel detected by the online monitoring device, the horizontal coordinate of the height two-dimensional information graph is the detection time of the online monitoring device, the vertical coordinate of the height two-dimensional information graph is the height of the external wall panel detected by the online monitoring device, and the time points corresponding to the horizontal coordinate of the width two-dimensional information graph and the horizontal coordinate of the height two-dimensional information graph coincide.
Step 300, calibrating the width information within the detection time range of the external wall panel according to the width information and the height information of the same time point, and filtering and removing the height information outside the detection time range of the external wall panel;
wherein to the online detection device that wallboard side crookedness detected and wallboard surface crookedness detected begin work simultaneously, therefore the abscissa of width two-dimensional information picture and height two-dimensional information picture coincides basically, can fuse width two-dimensional information picture and height two-dimensional information picture in a coordinate system, there may be less error in the testing process, consequently through the information data of width two-dimensional information picture, but the beginning of correctable height two-dimensional information picture to every wallboard detects time point and stops the detection time point, thereby make things convenient for the surperficial crookedness of confirming the wallboard more.
The online monitoring device for detecting the curvature of the side edge of the external wall panel is used for setting the width w of the external wall panel detected at the moment as the standard width of the external wall panel within the detection time of a single external wall panel when the width w of the external wall panel is less than half of the standard width of the external wall panel.
When the surface curvature of the external wall panel is too large, the data change amplitude of the online monitoring device for detecting the curvature of the side edge of the external wall panel is large, the reason for the data mutation of the online monitoring device for detecting the curvature of the side edge of the external wall panel can be determined in the coordinate system fused by the width two-dimensional information graph and the height two-dimensional information graph, the data change is large, error data is filtered and eliminated, the accuracy of calculating the curvature of the external wall panel is improved, and the error of curvature detection is reduced.
And step 400, calculating the curvature of the external wall panel according to the monitoring result, and determining the flatness performance of the external wall panel.
The curvature is divided into side curvature representing the width of the external wall panel and surface curvature representing the surface of the external wall panel;
the calculation formula of the side bending degree is as follows: q ═ wMaximum and minimum－wMinimum size)/wStandard of meritWherein Q denotes the degree of lateral curvature, wMaximum and minimumDenotes the maximum width of the outer wall panel, wMinimum sizeDenotes the minimum width of the outer wall panel, wStandard of meritStandard specification for representing the width of the external wall panel;
the calculation formula of the surface curvature is as follows: p ═ hMaximum and minimum－hMinimum size)/hStandard of meritWherein P represents the degree of surface curvature, hMaximum and minimumDenotes the maximum height of the external wall panel, hMinimum sizeDenotes the minimum height of the exterior wall panel, hStandard of meritStandard specifications for the height of the exterior wall panel are shown.
W aboveMaximum and minimumAnd wMinimum sizeAre the maximum width and the minimum width of the external wall panel selected from the data excluded by the error data filtering with large data variation.
Therefore, the embodiment realizes the online real-time monitoring of the bending degree of the outer wall plate in the production process of the outer wall plate, when the bending degree exceeds the error range, the outer wall plate is directly discharged back to the mixing roll for re-production, the stability of the production quality of the outer wall plate is improved, meanwhile, the artificial participation is not needed, the bending degree of each outer wall plate can be calculated in real time, the detection efficiency is high, and the detection error of the bending degree is small.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. The device for monitoring the curvature of the external wall panel on line is characterized by comprising a group of width measuring mechanisms (1) which are oppositely arranged on two sides of a conveying chain of the external wall panel and flatness measuring mechanisms (2) which are respectively arranged above the width measuring mechanisms (1), wherein the width measuring mechanisms (1) are used for calculating the width between two parallel side edges of the external wall panel and monitoring the curvature of the side surface of the external wall panel through the change of the width, and the flatness measuring mechanisms (2) are used for calculating the height of the upper surface of the external wall panel and monitoring the curvature of the surface of the external wall panel through the change of the height;
the width measuring mechanism (1) comprises stop mounting plates (101) arranged on two sides of the outer wall panel conveying chain, width laser range finders (102) which are relatively parallel and used for detecting the width of the outer wall panel are arranged on the stop mounting plates (101), and an included angle between a connecting line of the two width laser range finders (102) and the transmission direction of the outer wall panel conveying chain is 91-93 degrees;
the flatness measuring mechanism (2) comprises an inverted L-shaped mounting plate (201) arranged above the width laser range finder (102), a height laser range finder (202) used for detecting the surface curvature of the external wall panel is mounted on the upper plate of the inverted L-shaped mounting plate (201), an open hole groove (203) is vertically formed in the side plate of the inverted L-shaped mounting plate (201), a probe (205) which is flush with the upper surface of the external wall panel in height is connected in the open hole groove (203) through a T-shaped plate (204), a parallel wing plate (206) is arranged on the probe (205) outside the side edge of the external wall panel, and the laser emission position of the height laser range finder (202) is over against the parallel wing plate (206);
one side edge of the T-shaped plate (204) is provided with a vertical rack (3), the inner wall of the open hole groove (203) is provided with a gear (5) which is meshed with the vertical rack (3) through a fixed rotating shaft (4), the inner wall of the open hole groove (203) is provided with a limiting sliding groove (8) which is used for limiting the linear movement of the T-shaped plate (204) at the opposite position of the gear (5), the central position of the gear (5) freely rotates around the fixed rotating shaft (4), the side edge of one of the gears (5) is provided with a locking cylinder (6), the tail end of a piston rod of the locking cylinder (6) is provided with an arc-shaped clamping plate (7), the arc-shaped clamping plate (7) stops the rotation of the gear (5) by extruding the gear (5), and the telescopic work of the locking cylinder (6) is triggered by the output signal of the width laser range finder (102), the width laser range finder (102) detects the external wall panel on the external wall panel conveying chain, the piston rod of the locking cylinder (6) retracts inwards, the width laser range finder (102) detects the gap between two external wall panels on the external wall panel conveying chain, and the piston rod of the locking cylinder (6) extends outwards.
2. The monitoring method of the device for the on-line monitoring of the bending degree of the external wall panel according to claim 1 is characterized by comprising the following steps:
step 100, debugging an external wall panel bending online monitoring device, and presetting a relational expression between data of the online monitoring device and the width and height of the external wall panel;
200, monitoring the width information and the height information of the external wall panel on line in real time, and simultaneously generating a width two-dimensional information graph and a height two-dimensional information graph of the external wall panel in a coordinate system;
step 300, calibrating the width information within the detection time range of the external wall panel according to the width information and the height information of the same time point, and filtering and removing the height information outside the detection time range of the external wall panel;
and step 400, calculating the curvature of the external wall panel according to the monitoring result, and determining the flatness performance of the external wall panel.
3. The method for monitoring the bending degree of the external wall panel according to claim 2, wherein in step 100, the relation between the data of the on-line monitoring device and the width of the external wall panel is specifically as follows: w-L-x 1-x 2; wherein w is the width of the external wall panel, L is the vertical distance between the on-line detection devices arranged at the two side edges of the external wall panel, x1 is the real-time vertical distance between the on-line detection device at one side and the external wall panel, and x2 is the real-time vertical distance between the on-line detection device at the other side and the external wall panel.
4. The method for monitoring the bending degree of the external wall panel according to claim 3, wherein in step 100, the relation between the data of the on-line monitoring device and the height of the external wall panel is specifically as follows: h-y; wherein H is the height of side fascia, H is the vertical distance between the online detection device of setting in side fascia top and the side fascia conveyor chain, and y is the real-time vertical distance between the online detection device of side fascia top and the side fascia upper surface.
5. The method for monitoring the bending degree of the external wall panel according to claim 2, wherein in step 200, the abscissa of the width two-dimensional information graph is the detection time of the online monitoring device, the ordinate is the width of the external wall panel detected by the online monitoring device, the abscissa of the height two-dimensional information graph is the detection time of the online monitoring device, the ordinate is the height of the external wall panel detected by the online monitoring device, and the time points corresponding to the abscissas of the width two-dimensional information graph and the height two-dimensional information graph coincide with each other.
6. The method for monitoring the bending degree of the external wall panel as claimed in claim 5, wherein the online monitoring device for detecting the bending degree of the side edge of the external wall panel sets the width w of the detected external wall panel as the standard width of the external wall panel when the width w of the external wall panel is smaller than half of the standard width of the external wall panel within the detection time of a single external wall panel.
7. The method for monitoring the online curvature monitoring device of the external wall panel as claimed in claim 2, wherein in step 400, the curvature is divided into side curvature representing the width of the external wall panel and surface curvature representing the surface of the external wall panel;
the calculation formula of the side bending degree is as follows: q ═ wMaximum and minimum－wMinimum size)/wStandard of meritWherein Q denotes the degree of lateral curvature, wMaximum and minimumDenotes the maximum width of the outer wall panel, wMinimum sizeDenotes the minimum width of the outer wall panel, wStandard of meritStandard specification for representing the width of the external wall panel;
therein tablesThe formula for calculating the surface curvature is as follows: p ═ hMaximum and minimum－hMinimum size)/hStandard of meritWherein P represents the degree of surface curvature, hMaximum and minimumDenotes the maximum height of the external wall panel, hMinimum sizeDenotes the minimum height of the exterior wall panel, hStandard of meritStandard specifications for the height of the exterior wall panel are shown.
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