CN112985290B - Detection equipment and method for roundness of guide hole and micropore - Google Patents
Detection equipment and method for roundness of guide hole and micropore Download PDFInfo
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- CN112985290B CN112985290B CN201911215337.3A CN201911215337A CN112985290B CN 112985290 B CN112985290 B CN 112985290B CN 201911215337 A CN201911215337 A CN 201911215337A CN 112985290 B CN112985290 B CN 112985290B
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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
- G01B11/2408—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring roundness
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
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Abstract
The invention discloses a device and a method for detecting the roundness of a guide hole and a micropore, which comprise a spinneret plate detection table, a guide hole roundness detection device, a micropore roundness detection device and a calculation terminal; the guide hole roundness detection device is used for shooting first image information of the guide hole outer circular hole and the micro-hole inner circular hole and transmitting the first image information to the computing terminal; the micropore roundness detection device is used for shooting second image information of the micropore outer circular hole and transmitting the second image information to the computing terminal. By adopting the detection equipment and the detection method for the roundness of the guide hole and the micropore, the roundness of the guide hole and the micropore is effectively analyzed and detected through a computer algorithm and a position detection standard, the problem of detection of the roundness defect of the guide hole and the micropore is fully solved, and the phenomenon that a single spinneret orifice becomes a waste orifice due to unqualified roundness of the guide hole and the micropore can be effectively avoided. Greatly improving the efficiency of spinneret plate operation and reducing the maintenance and detection cost.
Description
Technical Field
The invention relates to the field of spinneret plate detection, in particular to a device and a method for detecting roundness of a guide hole and a micropore.
Background
At present, the spinneret plate is an important part in the textile industry, especially in the chemical fiber industry. As an indispensable precision part in a spinning machine in the chemical fiber industry, the spinning machine has the function of extruding fiber bundles with certain thickness and fine texture by spraying and extruding spinning melt or solution which is accurately metered through micropores on a spinneret plate. The development of spinnerets has thus helped to promote the development of new textile fibres. The manufacturing precision of the spinneret plate determines the quality of fiber forming, and the shape of the micropores of the spinneret plate determines the cross section shape of the fiber, so that the comfort of the fabric is influenced. Therefore, the quality of the spinneret plate is an important condition for ensuring the quality of the finished fiber product and a good spinning process. For the detection of the quality of the spinneret plate, only relevant research in China is only developed on the micropore detection; guide holes and transition holes which also have great influence on the spinning quality are not researched yet.
The number of spinneret orifices on the existing spinneret plate is at least about 50, and can reach 1.2-9.8 thousands, and the aperture of each micropore is 10-50 mu m, which puts a very high requirement on the quality detection of the spinneret plate. For the detection of the spinneret plate, the bottom irradiation detection of an intense light source and the under-microscope amplification detection are mostly used. Wherein strong light source bottom irradiation mode can only observe whether the hole of whole face is printing opacity, whether porose jam, very easily takes place to miss and examines, and can't discover downthehole tiny dirt, more can't be to spinneret orifice data quantization. Although the hole can be enlarged by the microscope for detection, tiny dirt in the hole can be observed, the number of the micropores reaches tens of thousands, the distance between the holes is only less than 100 mu m, the condition of missing detection is very easy to occur, even if dirt is detected in a certain hole, the hole is difficult to find on a spinneret plate, the microscope is manual detection and cannot be replaced by a machine, the labor intensity of manual detection is high, and the detection accuracy is low.
In the prior art, only the micropore part of the spinneret orifice in the spinneret plate is usually detected, but although the guide hole is relatively large relative to the micropore, the detection of the guide hole cannot be ignored. The guide hole of the spinneret plate is used as a guide hole for spinning and is also a positioning hole in the spinneret hole processing process with extremely high precision requirement. Quality testing of vias is often ignored because the quality of the via does not directly affect the fiber. And according to the structural characteristics of the guide hole and the transition hole, the aperture of the guide hole is about 2-3mm, so that the light source cannot irradiate the wall of the guide hole and the surface of the transition hole, the depth of the guide hole is about 22mm, and the depth puts high requirements on the depth of field of the camera. The guide holes and the transition holes have more defects, such as: the defects of tool withdrawal scratch, bulge, dirt, unqualified roundness, non-central micropore position and the like do not form a complete detection standard and a mature algorithm at present. All in all, the quality detection of the spinneret plate puts extremely high requirements.
For the guide holes and the micropores, if the roundness of the guide holes and the micropores is unqualified, the processing defect easily influences the state of a melt in the holes, the forming quality of textile fibers can be greatly influenced, and the unqualified roundness of the guide holes and the micropores can also cause single spinneret holes of a spinneret plate to become waste holes, and even directly influences the service life of the whole spinneret plate. If the roundness of the guide hole and the micropore is not detected in time, serious time, material and equipment cost are greatly lost and wasted. However, no technical solution for specifically detecting the roundness of the guide hole and the micro hole exists in the prior art, and it is of great significance to provide a device and a method for detecting the roundness of the guide hole and the micro hole to solve the problems in the prior art.
Aiming at the problems in the prior art, the equipment and the method for detecting the roundness of the guide hole and the micropore have important significance.
Disclosure of Invention
In order to solve the above problems, the present invention provides an apparatus and a method for detecting the roundness of a guide hole and a micro-hole.
In order to achieve the purpose, the guide hole and micropore roundness detection equipment comprises a spinneret plate detection table, a guide hole roundness detection device, a micropore roundness detection device and a calculation terminal; a spinneret plate placing part is arranged on the spinneret plate detecting platform and used for placing the spinneret plate; the spinneret plate is provided with a spinneret orifice, the spinneret orifice consists of a circular guide hole and a circular micropore, the bottom of the guide hole is provided with a conical transition hole, and the micropore and the guide hole are connected through the transition hole; the guide hole comprises a guide hole outer circular hole, the micropore comprises a micropore outer circular hole and a micropore inner circular hole, the micropore inner circular hole is connected with the guide hole through the transition hole, the micropore outer circular hole is positioned on the lower surface of the spinneret plate, and the guide hole outer circular hole is positioned on the upper surface of the spinneret plate; the guide hole roundness detection device is arranged below the spinneret plate placing plane and is used for shooting first image information of the outer circular hole of the guide hole and the inner circular hole of the micropore and transmitting the first image information to the computing terminal; the micropore roundness detection device is arranged above the spinneret plate placing plane and is used for shooting second image information of the micropore outer circular hole and transmitting the second image information to the computing terminal;
further, the guide hole roundness detection device specifically comprises a first camera, a first lens light source module, a first positioning module, a first correction sheet and a first data transmission module; the first camera is used for shooting first image information of the outer round hole of the guide hole and second image information of the inner round hole of the micropore; the first lens light source module is used for providing a light source for shooting; the first positioning module is used for positioning the shot outer circular hole of the guide hole and the shot inner circular hole of the micropore; the first data transmission module is used for transmitting the first image information and the second image information to the computing terminal;
further, the micropore roundness detection device specifically comprises a second camera, a second lens light source module, a second positioning module, a second correction sheet and a second data transmission module; the second camera is used for shooting third image information of the outer round hole of the micropore; the second lens light source module is used for providing a light source for shooting; the second positioning module is used for positioning the shot outer circular hole of the guide hole and the shot inner circular hole of the micropore; the second data transmission module is used for transmitting the third image information to the computing terminal;
furthermore, the computing terminal comprises a control module, a data receiving module, an analysis module, a preset threshold storage module and a judgment module; the data receiving module, the analysis module, the preset threshold storage module and the judgment module are respectively electrically connected with the control module; the data receiving module is used for receiving the image information; the analysis module is used for analyzing the first image information, the second image information and the third image information, detecting the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole and respectively generating first parameter information, second parameter information and third parameter information; the judging module is used for respectively comparing the first parameter information, the second parameter information and the third parameter information with preset thresholds and respectively judging whether the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole is qualified or not;
further, the judging module is further configured to compare the first parameter information, the second parameter information, and the third parameter information with a preset threshold, and respectively judge whether the guide hole outer circular hole, the micropore inner circular hole, and the micropore outer circular hole have a notch or a collapsed edge;
the invention also provides a method for detecting the roundness of the guide hole and the micropore, which comprises the following steps: shooting first image information of the outer round hole of the guide hole on the spinneret plate, second image information of the inner round hole of the micropore and third image information of the outer round hole of the micropore; analyzing the first image information, the second image information and the third image information, respectively detecting the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole, and generating corresponding first parameter information, second parameter information and third parameter information; respectively comparing the first parameter information, the second parameter information and the third parameter information with a preset threshold value, and respectively judging whether the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole is qualified;
further, the comparing the first parameter information, the second parameter information, and the third parameter information with a preset threshold, and respectively determining whether the circularities of the guide hole outer circular hole, the micropore inner circular hole, and the micropore outer circular hole are qualified further includes: respectively comparing the first parameter information, the second parameter information and the third parameter information with a preset threshold value, and respectively judging whether gaps and collapsed edges exist in the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole;
further, the shooting of the first image information of the outer circular hole of the guide hole on the spinneret plate, the second image information of the inner circular hole of the micropore and the third image information of the outer circular hole of the micropore are specifically as follows: shooting first image information of a guide hole outer circular hole, second image information of a micropore inner circular hole and third image information of a micropore outer circular hole on the spinneret plate right above and right below the guide hole and the micropore;
further, the determining whether the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole have gaps and collapsed edges specifically includes the following steps: shooting fourth image information of the outer circular hole of the guide hole, fifth image information of the inner circular hole of the micropore and sixth image information of the outer circular hole of the micropore on the spinneret plate in a backlight environment; shooting seventh image information of the outer circular hole of the guide hole, eighth image information of the inner circular hole of the micropore and ninth image information of the outer circular hole of the micropore on the spinneret plate in a light-focusing environment; respectively comparing the fitting diameter and the roundness in the fourth image information, the fifth image information and the sixth image information with a first preset fitting diameter threshold value and a first preset roundness defect threshold value to obtain a first judgment result; respectively comparing the fitting diameter and the roundness in the seventh image information, the eighth image information and the ninth image information with a second preset fitting diameter threshold value and a second preset roundness defect threshold value to obtain a second judgment result; according to the first judgment result and the second judgment result, judging whether gaps and collapsed edges exist in the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole in a combined mode;
further, the comparing the first parameter information, the second parameter information, and the third parameter information with a preset threshold, and respectively determining whether the circularities of the guide hole outer circular hole, the micropore inner circular hole, and the micropore outer circular hole are qualified further includes: and respectively comparing the first parameter information, the second parameter information and the third parameter information with a preset threshold value, and respectively judging the symmetry degrees of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole.
According to the detection equipment and method for the roundness of the guide hole and the micropore, the roundness of the guide hole and the micropore is effectively analyzed and detected through the arrangement of the shooting device and the calculation terminal and the computer algorithm and the position detection standard, so that the problem of detecting the roundness defects of the guide hole and the micropore is fully solved. The processing defect that the roundness of the guide holes and the micropores is unqualified is effectively prevented, and the risk that the poor state of the melt formed in the holes has great influence on the forming quality of the textile fibers is avoided. Meanwhile, the risk that a single spinneret orifice becomes a waste orifice due to unqualified roundness of the guide holes and the micropores, and even the service life of the whole spinneret plate is directly influenced can be effectively avoided. Greatly improving the working efficiency of the spinneret plate and reducing the maintenance and detection cost.
Drawings
FIG. 1 is a schematic view of a first structure of the apparatus for detecting the roundness of the guide holes and the micro holes according to the present invention;
FIG. 2 is a schematic diagram of a second structure of the apparatus for detecting the roundness of the via and the micro-hole according to the present invention;
FIG. 3 is a schematic view of the spinneret orifice of the present invention;
FIG. 4 is a first flowchart illustrating a method for detecting the roundness of the via and the micro-hole according to the present invention;
FIG. 5 is a second flowchart of the method for detecting the roundness of the via and the micro-hole according to the present invention.
Detailed Description
The structure, operation, and the like of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, fig. 2 and fig. 3, fig. 1 is a first structural schematic diagram of the guide hole and micropore roundness detection apparatus of the present invention, fig. 2 is a second structural schematic diagram of the guide hole and micropore roundness detection apparatus of the present invention, and fig. 3 is a structural schematic diagram of the spinneret hole of the present invention; the invention discloses a guide hole and micropore roundness detection device, which is particularly used on a spinneret plate detection device and comprises a spinneret plate detection table 2, a guide hole roundness detection device 3, a micropore roundness detection device 1 and a calculation terminal 4; the spinneret plate detection platform 2 is provided with a spinneret plate placing part 21, and the spinneret plate placing part 21 is used for placing the spinneret plate 22; as shown in fig. 3, a spinneret plate 22 is provided with a spinneret hole, the spinneret hole is composed of a circular guide hole 221 and a circular micro hole 222, a tapered transition hole 223 is provided at the bottom of the guide hole 221, and the micro hole 222 and the guide hole 221 are connected through the transition hole 223; the guide hole 221 comprises a guide hole outer circular hole 2211, the micropores comprise a micropore outer circular hole 2222 and a micropore inner circular hole 2221, the micropore inner circular hole 2221 is connected with the guide hole 221 through the transition hole 223, the micropore outer circular hole 2222 is positioned on the lower surface of the spinneret plate, and the guide hole outer circular hole 2211 is positioned on the upper surface of the spinneret plate; the guide hole roundness detection device 3 is arranged below the plane where the spinneret plate 22 is placed, and the guide hole roundness detection device 3 is used for shooting first image information of the guide hole outer circular hole 2211 and the micropore inner circular hole 2221 and transmitting the first image information to the computing terminal; the micropore roundness detection device 1 is arranged above the spinneret plate placing plane, and the micropore roundness detection device 1 is used for shooting second image information of the micropore outer circular hole 2222 and transmitting the second image information to the computing terminal 4. In a preferred embodiment of the present invention, the spinneret is placed in such a manner that the upper surface of the spinneret is facing the ground and the lower surface of the spinneret is facing the sky, so that the guide hole roundness detection apparatus is disposed below the spinneret placement plane in such a manner; the micropore roundness detection device is arranged above the spinneret plate placing plane; the micropore roundness detection device is integrated in a micropore detection device, and the micropore detection device is specifically used for detecting micropores on the lower surface of the spinneret plate; the guide hole roundness detection device is integrated in a guide hole detection device, and the guide hole detection device is used for detecting the guide hole on the upper surface of the spinneret plate.
The guide hole roundness detection device 3 specifically comprises a first camera 31, a first lens light source module 34, a first positioning module 32, a first correction sheet 33 and a first data transmission module 35; the first camera 31 is configured to capture first image information of the guide hole outer circle 2211 and second image information of the micro-hole inner circle 2221; the first lens light source module 34 is used for providing a light source for shooting; the first positioning module 32 is configured to position the guide hole outer circle hole 2211 and the micro-hole inner circle hole 2221 which are photographed; the first data transmission module 35 is configured to transmit the first image information and the second image information to the computing terminal 4. In a preferred embodiment of the present invention, the first camera 31 is provided with a 7X zoom lens; the first positioning module 32 is a laser positioning point.
The micropore roundness detection device 1 specifically comprises a second camera 11, a second lens light source module 14, a second positioning module 12, a second correction sheet 13 and a second data transmission module 15; the second camera 11 is configured to capture third image information of the micro-hole outer round hole 2222; the second lens light source module 14 is used for providing a light source for shooting; the second positioning module 12 is configured to position the photographed micro-hole outer circular hole 2222; the second data transmission module 15 is configured to transmit the third image information to the computing terminal 4. In a preferred embodiment of the present invention, the second camera 11 is provided with a 7X zoom lens; the second positioning module 12 is a laser positioning point.
The computing terminal 4 comprises a control module 41, a data receiving module 45, an analysis module 44, a preset threshold storage module 43 and a judgment module 42; the data receiving module 45, the analyzing module 44, the preset threshold storage module 43 and the judging module 42 are electrically connected with the control module 41 respectively; the data receiving module 45 is configured to receive the image information; the analysis module 44 is configured to analyze the first image information, the second image information, and the third image information, detect circularities of the guide hole outer circular hole 2211, the micro-hole inner circular hole 2221, and the micro-hole outer circular hole 2222, and generate first parameter information, second parameter information, and third parameter information, respectively; the determining module 42 is configured to compare the first parameter information, the second parameter information, and the third parameter information with preset thresholds, and determine whether the circularities of the guide hole outer circular hole, the micro-hole inner circular hole 2221, and the micro-hole outer circular hole 2222 are qualified. In a preferred embodiment of the present invention, a preset threshold is stored in the preset threshold storage module, when the comparison is needed, the judgment module 42 outputs a call instruction to the control module 41, and the control module 41 calls the preset threshold stored in the preset threshold storage module 43 and transmits the preset threshold to the judgment module 42 for comparison; preferably, the preset threshold is that the roundness defect is larger than 5 micrometers or the fitting diameter error is larger than 10 micrometers. The determining module 42 is further configured to compare the first parameter information, the second parameter information, and the third parameter information with preset thresholds, and determine whether there are gaps and collapsed edges in the guide hole outer circular hole 2211, the micro hole inner circular hole 2221, and the micro hole outer circular hole 2222, respectively.
As shown in fig. 4, fig. 4 is a first flow chart of the method for detecting the roundness of the via and the micro-hole according to the present invention; the method specifically comprises the following steps:
s1, shooting first image information of the outer circular hole of the guide hole on the spinneret plate, second image information of the inner circular hole of the micropore and third image information of the outer circular hole of the micropore; in a preferred embodiment of the invention, first image information of the outer circular hole of the guide hole, second image information of the inner circular hole of the micropore and third image information of the outer circular hole of the micropore on the spinneret plate are shot right above and below the guide hole and the micropore;
s2 analyzing the first image information, the second image information, and the third image information, and detecting the circularities of the guide hole outer circular hole, the micropore inner circular hole, and the micropore outer circular hole, respectively, and generating corresponding first parameter information, second parameter information, and third parameter information; in a preferred embodiment of the present invention, the roundness measurement method of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole may specifically use a minimum contained area method, a minimum circumscribed circle method, a maximum inscribed circle method or a least square method to perform measurement. And calculating the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole by analyzing the first image information, the second image information and the third image information and establishing a rectangular coordinate system for the detected image and using methods such as a minimum contained area method, a minimum circumcircle method, a maximum inscribed circle method or a least square method.
S3 comparing the first parameter information, the second parameter information, and the third parameter information with a preset threshold, and determining whether the circularities of the guide hole outer circular hole, the micropore inner circular hole, and the micropore outer circular hole are qualified;
s4 compares the first parameter information, the second parameter information, and the third parameter information with a preset threshold, and determines whether there is a notch or a sag in the guide hole outer circular hole, the micro hole inner circular hole, and the micro hole outer circular hole, respectively. Generally, when the roundness of the via outer circular hole, the via inner circular hole and the via outer circular hole is impossible to be obtained, there is a high possibility of occurrence of a gap or a sag. Therefore, by comparing the first parameter information, the second parameter information, and the third parameter information with the threshold values of the notch and the collapsed edge, it can be further determined whether the notch and the collapsed edge exist in the guide hole outer circular hole, the micropore inner circular hole, and the micropore outer circular hole, and a determination result is output.
As shown in fig. 5, fig. 5 is a second schematic flow chart of the method for detecting the roundness of the guide hole and the micro-hole of the present invention, wherein the method for determining whether the circular hole outside the guide hole, the circular hole inside the micro-hole, and the circular hole outside the micro-hole have notches and collapsed edges further includes the following steps:
s1', in the environment of backlight, shooting fourth image information of the outer round hole of the guide hole on the spinneret plate, fifth image information of the inner round hole of the micropore and sixth image information of the outer round hole of the micropore;
s2', in the environment of light, the seventh image information of the outer round hole of the guide hole, the eighth image information of the inner round hole of the micropore and the ninth image information of the outer round hole of the micropore on the spinneret plate are shot;
s3' compares the fitting diameter and roundness in the fourth image information, the fifth image information, and the sixth image information with a first preset fitting diameter threshold and a first preset roundness defect threshold, respectively, to obtain a first determination result; in a preferred embodiment of the present invention, the first preset roundness defect threshold may be set to 3 μm to 5 μm; the first preset fitting diameter threshold may be set to 6 μm to 10 μm;
s4' compares the fitting diameter and the roundness in the seventh image information, the eighth image information, and the ninth image information with a second preset fitting diameter threshold and a second preset roundness defect threshold, respectively, to obtain a second determination result; in a preferred embodiment of the present invention, the second preset roundness defect threshold may be set to 5 μm to 10 μm; the second preset fitting diameter threshold may be set to 10 μm to 15 μm;
and S5', according to the first judgment result and the second judgment result, judging whether the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole have gaps and collapsed edges in a combined manner.
In a preferred embodiment of the present invention, the comparing the first parameter information, the second parameter information, and the third parameter information with a preset threshold, and determining whether the circularities of the guide hole outer circular hole, the micropore inner circular hole, and the micropore outer circular hole are qualified further includes: and comparing the first parameter information, the second parameter information and the third parameter information with preset thresholds respectively, and judging the symmetry degrees of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole respectively, wherein preferably, the threshold interval of the symmetry degree is 0.001 to 0.005.
In the first embodiment provided by the invention, the detection equipment for the guide hole and the roundness of the micropore is particularly applied to a detection device of a spinneret plate, and the detection device of the spinneret plate particularly comprises a micropore roundness detection device, a spinneret plate detection table, a guide hole roundness detection device and a support arm; the spinneret plate detection platform is provided with a spinneret plate placing part, and the spinneret plate placing part is used for placing the spinneret plate and can rotate the spinneret plate on a placing plane; the spinneret plate is placed in a mode that the upper surface faces the ground and the lower surface faces the sky; the micropore roundness detection device and the guide hole roundness detection device are fixedly arranged on the support arm; the spinneret plate is provided with a spinneret orifice, the spinneret orifice consists of a circular guide hole and a circular micropore, the bottom of the guide hole is provided with a conical transition hole, and the micropore and the guide hole are connected through the transition hole; the guide hole comprises a guide hole outer circular hole, the micropore comprises a micropore outer circular hole and a micropore inner circular hole, the micropore inner circular hole is connected with the guide hole through the transition hole, the micropore outer circular hole is positioned on the lower surface of the spinneret plate, and the guide hole outer circular hole is positioned on the upper surface of the spinneret plate; the guide hole roundness detection device is arranged below the spinneret plate placing plane and is used for shooting first image information of the outer circular hole of the guide hole and the inner circular hole of the micropore and transmitting the first image information to the computing terminal; the micropore roundness detection device is arranged above the spinneret plate placing plane and used for shooting second image information of the micropore outer circular hole and transmitting the second image information to the computing terminal. The micropore roundness detection device is integrated in a micropore detection device, and the micropore detection device is particularly used for detecting micropores on the lower surface of the spinneret plate; the guide hole roundness detection device is integrated in a guide hole detection device, and the guide hole detection device is used for detecting the guide hole on the upper surface of the spinneret plate.
The guide hole roundness detection device specifically comprises a first camera, a first lens light source module, a first positioning module, a first correction sheet and a first data transmission module; the first camera is provided with a 7X zoom lens and is used for shooting first image information of the outer round hole of the guide hole and second image information of the inner round hole of the micropore; the first lens light source module is used for providing a light source for shooting; the first positioning module is a laser positioning point and is used for positioning the shot outer circular hole of the guide hole and the shot inner circular hole of the micropore; the first data transmission module is used for transmitting the first image information and the second image information to the computing terminal.
The micropore roundness detection device specifically comprises a second camera, a second lens light source module, a second positioning module, a second correcting sheet and a second data transmission module; the second camera is provided with a 7X zoom lens and is used for shooting third image information of the outer round hole of the micropore; the second lens light source module is used for providing a light source for shooting; the second positioning module is a laser positioning point and is used for positioning the shot outer circular hole of the guide hole and the shot inner circular hole of the micropore; the second data transmission module is used for transmitting the third image information to the computing terminal.
The computing terminal is a desktop computer device and comprises a control module, a data receiving module, an analysis module, a preset threshold storage module and a judgment module; the data receiving module, the analysis module, the preset threshold storage module and the judgment module are respectively electrically connected with the control module; the data receiving module is used for receiving the image information; the analysis module is used for analyzing the first image information, the second image information and the third image information, detecting the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole and respectively generating first parameter information, second parameter information and third parameter information; the judging module is used for respectively comparing the first parameter information, the second parameter information and the third parameter information with preset thresholds and respectively judging whether the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole is qualified. The preset threshold is that the roundness defect is larger than 5 micrometers or the fitting diameter error is larger than 10 micrometers, the preset threshold is stored in the preset threshold storage module, when the preset threshold is compared, the judging module outputs a calling instruction to the control module, and the control module calls the preset threshold stored in the preset threshold storage module and transmits the preset threshold to the judging module for comparison; the judging module is further configured to compare the first parameter information, the second parameter information, and the third parameter information with a preset threshold, and respectively judge whether the guide hole outer circular hole, the micropore inner circular hole, and the micropore outer circular hole have a notch or a collapsed edge.
The method for detecting the roundness of the guide hole and the micropore in the first embodiment of the invention specifically comprises the following steps:
the guide hole roundness detection device and the micropore roundness detection device respectively shoot first image information of a guide hole outer circular hole, second image information of a micropore inner circular hole and third image information of a micropore outer circular hole on a spinneret plate right above and right below the guide hole and the micropore; and transmitting to the computing terminal;
an analysis module of the computing terminal analyzes the first image information, the second image information and the third image information, respectively detects the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole and generates corresponding first parameter information, second parameter information and third parameter information; the roundness measuring method of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole is specifically used for measuring by a least square method. And calculating the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole by analyzing the first image information, the second image information and the third image information and establishing a rectangular coordinate system for the detected image, a least square method and other methods.
The judging module respectively compares the first parameter information, the second parameter information and the third parameter information with a first preset threshold, wherein the first preset threshold is that the roundness defect is larger than 5 micrometers or the fitting diameter error is larger than 10 micrometers, and respectively judges whether the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole is qualified or not;
the judging module further compares the first parameter information, the second parameter information and the third parameter information with a second preset threshold value, wherein the second preset threshold value is that the roundness defect is larger than 9 micrometers or the fitting diameter error is larger than 15 micrometers, and judges whether gaps and collapsed edges exist in the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole respectively. When the roundness of the guide-hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole is impossible to be obtained, there is a high possibility of occurrence of a gap or a sag. Therefore, the first parameter information, the second parameter information, and the third parameter information are further compared with a second preset threshold of the notch and the collapsed edge, so that whether the notch and the collapsed edge exist in the guide hole outer circular hole, the micropore inner circular hole, and the micropore outer circular hole can be further determined, and a determination result is output.
In the second embodiment of the present invention, the determining whether the guide hole outer circular hole, the micropore inner circular hole, and the micropore outer circular hole have gaps and collapsed edges specifically includes the following steps:
shooting fourth image information of the outer circular hole of the guide hole, fifth image information of the inner circular hole of the micropore and sixth image information of the outer circular hole of the micropore on the spinneret plate in a backlight environment;
shooting seventh image information of the outer circular hole of the guide hole, eighth image information of the inner circular hole of the micropore and ninth image information of the outer circular hole of the micropore on the spinneret plate in a light-focusing environment;
respectively comparing the fitting diameter and the roundness in the fourth image information, the fifth image information and the sixth image information with a first preset fitting diameter threshold value and a first preset roundness defect threshold value to obtain a first judgment result; the first preset roundness defect threshold may be set to 3 μm; the first preset fitting diameter threshold may be set to 6 μm; if the fitting diameter and the roundness of the fourth image information, the fifth image information or the sixth image information are respectively greater than the first preset fitting diameter threshold and the first preset roundness defect threshold, judging that gaps and collapsed edges possibly exist;
respectively comparing the fitting diameter and the roundness in the seventh image information, the eighth image information and the ninth image information with a second preset fitting diameter threshold value and a second preset roundness defect threshold value to obtain a second judgment result; the second preset roundness defect threshold may be set to 5 μm; the second preset fitting diameter threshold may be set to 10 μm; if the fitting diameter and the roundness of the seventh image information, the eighth image information or the ninth image information are respectively greater than the second preset fitting diameter threshold and the second preset roundness defect threshold, judging that gaps and collapsed edges may exist;
and according to the first judgment result and the second judgment result, judging whether the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole have gaps and collapsed edges in a combined manner. And if the first judgment result and the second judgment result both possibly have a notch and a collapsed edge, judging that the notch and the collapsed edge exist.
The foregoing is merely illustrative of the present invention, and it will be appreciated by those skilled in the art that various modifications may be made without departing from the principles of the invention, and the scope of the invention is to be determined accordingly.
Claims (6)
1. A guide hole and micropore roundness detection device is characterized by comprising a spinneret plate detection table, a guide hole roundness detection device, a micropore roundness detection device and a calculation terminal; a spinneret plate placing part is arranged on the spinneret plate detecting platform and used for placing the spinneret plate; the spinneret plate is provided with a spinneret orifice, the spinneret orifice consists of a circular guide hole and a circular micropore, the bottom of the guide hole is provided with a conical transition hole, and the micropore and the guide hole are connected through the transition hole;
the guide hole comprises a guide hole outer circular hole, the micropore comprises a micropore outer circular hole and a micropore inner circular hole, the micropore inner circular hole is connected with the guide hole through the transition hole, the micropore outer circular hole is positioned on the lower surface of the spinneret plate, and the guide hole outer circular hole is positioned on the upper surface of the spinneret plate;
the guide hole roundness detection device is arranged below the spinneret plate placing plane and is used for shooting first image information of the round hole outside the guide hole and second image information of the round hole inside the micropore and transmitting the first image information and the second image information to the computing terminal;
the micropore roundness detection device is arranged above the spinneret plate placing plane and is used for shooting third image information of the micropore outer circular hole and transmitting the third image information to the computing terminal,
the computing terminal comprises a control module, a data receiving module, an analysis module, a preset threshold storage module and a judgment module; the data receiving module, the analysis module, the preset threshold storage module and the judgment module are respectively electrically connected with the control module; the data receiving module is used for receiving the image information; the analysis module is used for analyzing the first image information, the second image information and the third image information, detecting the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole and respectively generating first parameter information, second parameter information and third parameter information; the judging module is used for comparing the first parameter information, the second parameter information and the third parameter information with a first preset threshold value respectively and judging whether the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole is qualified or not respectively,
the judging module is further configured to compare the first parameter information, the second parameter information, and the third parameter information with a second preset threshold, and judge whether the guide hole outer circular hole, the micropore inner circular hole, and the micropore outer circular hole have a notch or a collapsed edge,
the method for judging whether the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole have gaps and collapsed edges comprises the following steps:
shooting fourth image information of the outer circular hole of the guide hole, fifth image information of the inner circular hole of the micropore and sixth image information of the outer circular hole of the micropore on the spinneret plate in a backlight environment;
shooting seventh image information of the outer circular hole of the guide hole, eighth image information of the inner circular hole of the micropore and ninth image information of the outer circular hole of the micropore on the spinneret plate in a light-focusing environment;
respectively comparing the fitting diameter and the roundness in the fourth image information, the fifth image information and the sixth image information with a first preset fitting diameter threshold value and a first preset roundness defect threshold value to obtain a first judgment result;
respectively comparing the fitting diameter and the roundness in the seventh image information, the eighth image information and the ninth image information with a second preset fitting diameter threshold value and a second preset roundness defect threshold value to obtain a second judgment result;
and according to the first judgment result and the second judgment result, judging whether the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole have gaps and collapsed edges in a combined manner.
2. The apparatus for detecting the roundness of a via and a micro via according to claim 1, wherein the device for detecting the roundness of a via comprises a first camera, a first lens light source module, a first positioning module, a first calibration sheet, and a first data transmission module; the first camera is used for shooting first image information of the outer round hole of the guide hole and second image information of the inner round hole of the micropore; the first lens light source module is used for providing a light source for shooting; the first positioning module is used for positioning the shot outer circular hole of the guide hole and the shot inner circular hole of the micropore; the first data transmission module is used for transmitting the first image information and the second image information to the computing terminal.
3. The apparatus for detecting the roundness of the via and the micropore as claimed in claim 1, wherein the micropore roundness detecting device specifically includes a second camera, a second lens light source module, a second positioning module, a second calibration sheet and a second data transmission module; the second camera is used for shooting third image information of the outer round hole of the micropore; the second lens light source module is used for providing a light source for shooting; the second positioning module is used for positioning the shot micropore outer circular hole; the second data transmission module is used for transmitting the third image information to the computing terminal.
4. The method for detecting the roundness of the guide hole and the micropore is characterized by comprising the following steps:
shooting first image information of the outer round hole of the guide hole on the spinneret plate, second image information of the inner round hole of the micropore and third image information of the outer round hole of the micropore;
analyzing the first image information, the second image information and the third image information, respectively detecting the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole, and generating corresponding first parameter information, second parameter information and third parameter information;
respectively comparing the first parameter information, the second parameter information and the third parameter information with a first preset threshold value, and respectively judging whether the roundness of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole is qualified,
respectively comparing the first parameter information, the second parameter information and the third parameter information with a second preset threshold value, and respectively judging whether gaps and collapsed edges exist in the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole,
the method for judging whether the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole have gaps and collapsed edges comprises the following steps:
shooting fourth image information of the outer circular hole of the guide hole, fifth image information of the inner circular hole of the micropore and sixth image information of the outer circular hole of the micropore on the spinneret plate in a backlight environment;
shooting seventh image information of the outer circular hole of the guide hole, eighth image information of the inner circular hole of the micropore and ninth image information of the outer circular hole of the micropore on the spinneret plate in a light-focusing environment;
respectively comparing the fitting diameter and the roundness in the fourth image information, the fifth image information and the sixth image information with a first preset fitting diameter threshold value and a first preset roundness defect threshold value to obtain a first judgment result;
respectively comparing the fitting diameter and the roundness in the seventh image information, the eighth image information and the ninth image information with a second preset fitting diameter threshold value and a second preset roundness defect threshold value to obtain a second judgment result;
and according to the first judgment result and the second judgment result, judging whether the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole have gaps and collapsed edges in a combined manner.
5. The method for detecting the roundness of the guide hole and the micro hole according to claim 4, wherein the capturing of the first image information of the outer circular hole of the guide hole, the second image information of the inner circular hole of the micro hole, and the third image information of the outer circular hole of the micro hole on the spinneret plate is specifically: and shooting first image information of the outer round hole of the guide hole on the spinneret plate under the guide hole, shooting second image information of the inner round hole of the micropore on the spinneret plate under the micropore, and shooting third image information of the outer round hole of the micropore on the spinneret plate above the micropore.
6. The method for detecting the roundness of the via and the micro-hole according to claim 4, wherein the comparing the first parameter information, the second parameter information, and the third parameter information with a predetermined threshold and determining whether the roundness of the via outer circular hole, the micro-hole inner circular hole, and the micro-hole outer circular hole is acceptable further comprises: and respectively comparing the first parameter information, the second parameter information and the third parameter information with a preset threshold value, and respectively judging the symmetry degrees of the guide hole outer circular hole, the micropore inner circular hole and the micropore outer circular hole.
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