CN116087285A - Complex film integrality detection device - Google Patents
Complex film integrality detection device Download PDFInfo
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- CN116087285A CN116087285A CN202211680077.9A CN202211680077A CN116087285A CN 116087285 A CN116087285 A CN 116087285A CN 202211680077 A CN202211680077 A CN 202211680077A CN 116087285 A CN116087285 A CN 116087285A
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- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 239000012790 adhesive layer Substances 0.000 claims abstract description 44
- 239000002131 composite material Substances 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims description 23
- 238000010168 coupling process Methods 0.000 claims description 23
- 238000005859 coupling reaction Methods 0.000 claims description 23
- 239000012528 membrane Substances 0.000 claims description 14
- 239000004922 lacquer Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012939 laminating adhesive Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Molecular Biology (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to the technical field of composite film detection and discloses a composite film integrity detection device which comprises a workbench, wherein a rear vertical plate is fixedly connected to the rear side of the upper surface of the workbench, an end frame is fixedly connected to the front side of the upper surface of the workbench, a fixed shaft is fixedly connected between the rear vertical plate and the end frame, an upper roller is arranged on the surface of the fixed shaft, an upper conductive adhesive layer is arranged on the surface of the upper roller, a rotating shaft is arranged in the workbench, a lower roller is arranged on the surface of the rotating shaft, and a lower conductive adhesive layer is adhered to the outer side surface of the lower roller. Through last conductive adhesive layer and lower conductive adhesive layer can contact each other in the damage to make the circuit switch-on, current detection module is switched on, shows that this part complex film exists the damage, through removing metal elastic sheet, judges the damage according to the electric current, through the mode of current detection, the dust in the environment can not influence the condition emergence that the damage can't be detected.
Description
Technical Field
The invention relates to the technical field of composite membrane detection, in particular to a composite membrane integrity detection device.
Background
Composite films refer to films of multilayer construction formed from various plastics bonded together with paper, metal or other materials by lamination extrusion coating, coextrusion, or other process techniques. The composite film generally consists of a substrate, laminating adhesive, barrier material, heat seal material, printing and protective layer coating, and the like.
In the actual production process of the composite film, defects such as holes and the like are generated on the surface of the composite film due to the influence of factors in various aspects, so that the quality of the composite film is seriously influenced, however, the traditional composite film detection method adopts a high-brightness LED linear condensation cold light source to irradiate the surface of the composite film, whether the composite film has the defects of the holes or not is judged according to the projection of light rays, and the method has higher requirements on the environment, so that dust in the environment is prevented from falling on the surface of the composite film to influence the penetration of the light rays. Accordingly, a composite membrane integrity detection device is provided by those skilled in the art to solve the above-mentioned problems.
Disclosure of Invention
The invention provides a composite film integrity detection device which is used for solving the technical problems that in the prior art, a high-brightness LED linear condensation cold light source is adopted to irradiate the surface of a composite film, whether the composite film has hole defects or not is judged according to the projection of light rays, but the method has high requirements on the environment, and dust in the environment falls on the surface of the composite film to influence the penetration of the light rays.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a complex film integrality detection device, includes the workstation, the upper surface rear side rigid coupling of workstation has the back riser, the upper surface front side rigid coupling of workstation has the tip frame, the back riser with common rigid coupling has the fixed axle between the tip frame, the surface of fixed axle and the one side that is close to the tip frame rotate the sleeve ring, just the sleeve ring surface rigid coupling has the backup pad, the tip rigid coupling of backup pad has upper portion cylinder, the other end card of upper portion cylinder is gone into the inside of back riser, the surface of upper portion cylinder has been pasted and has been applied the conductive adhesive layer, the inside rotation of workstation is provided with the axis of rotation, the axis of rotation is located under the fixed axle, the surface rigid coupling of axis of rotation has circular backup pad, the other end rigid coupling of circular backup pad has the lower part cylinder, the outside surface subsides of lower part cylinder has applied down the conductive adhesive layer.
As still further aspects of the invention: the upper roller and the lower roller are cylindrical, the central axis of the upper roller is coincident with the central axis of the fixed shaft, and the central axis of the lower roller is coincident with the central axis of the rotating shaft.
As still further aspects of the invention: the highest side of the lower roller extends to the upper surface of the workbench, the highest side of the lower conductive adhesive layer and the lowest side of the slip ring are in mutual extrusion contact, and the upper conductive adhesive layer and the lower conductive adhesive layer are made of elastic conductive materials.
As still further aspects of the invention: the inner wall of upper portion cylinder is spiral winding has the enameled wire, just the adjacent two circles of enameled wire are close to each other, the enameled wire orientation one side surface of fixed axle is the no lacquer setting, the enameled wire be close to the tip in the outside with connect through conductive wire between the last conductive adhesive layer, the other end of enameled wire is connected with current detection module.
As still further aspects of the invention: the surface cover of fixed axle is equipped with the slip ring, the lower extreme surface rigid coupling of slip ring has the extension body, the lower extreme rigid coupling of extension body has the metal elastic sheet, the lower extreme of metal elastic sheet is the closed angle setting, just the lower extreme of metal elastic sheet is taken and is leaned on the enameled wire surface does not have lacquer setting department.
As still further aspects of the invention: an alignment groove is formed in the surface of the fixed shaft, an alignment key is fixedly connected to the inner wall of the sliding ring, and the alignment key is clamped in the alignment groove.
As still further aspects of the invention: the rear side wall of the rear vertical plate is fixedly connected with a sleeve, the sleeve and the fixed shaft are positioned on the same central axis, the rear side of the sleeve is fixedly connected with a telescopic rod, the driving end of the telescopic rod faces the rear vertical plate, the driving end of the telescopic rod is fixedly connected with a push rod, and the front end of the push rod penetrates through the rear vertical plate and is fixedly connected to the rear side face of the sliding ring.
As still further aspects of the invention: the moving range of the metal elastic sheet is the product of the diameter of the enameled wire and all the turns.
As still further aspects of the invention: the sleeve is transparent, and the surface of the sleeve is provided with a scale.
As still further aspects of the invention: the current detection module can be an ammeter, a clamp meter or a variable-frequency electric quantity analyzer.
Compared with the prior art, the invention has the beneficial effects that:
1. through setting up conductive adhesive layer and lower conductive adhesive layer, when the damage appears on the complex film surface, because last conductive adhesive layer and lower conductive adhesive layer itself have elasticity, go up conductive adhesive layer and lower conductive adhesive layer and can contact each other in the damage department to make the circuit switch-on, current detection module is switched on, shows that this part complex film exists the damage.
2. Can control the slip ring through the telescopic link that sets up and slide at the surface of fixed axle, utilize metal elastic sheet in the non-lacquer department round trip contact of enameled wire surface, when current detection module detected maximum current, there is the damage in the complex film that is located metal elastic sheet directly under, and through carrying out transparent setting with the sleeve, telescopic surface is provided with the scale for observe the terminal position that corresponds with sleeve surface scale of telescopic link drive end, thereby can find the damaged position of this complex film more fast, through the mode of current detection, dust in the environment can not influence the condition emergence that the damage can not be detected, and can fix a position the damage, be convenient for follow-up repair the damage.
Drawings
FIG. 1 is a schematic diagram of a device for detecting the integrity of a composite membrane;
FIG. 2 is a schematic diagram of the internal structure of a device for detecting the integrity of a composite membrane;
FIG. 3 is an enlarged schematic view of FIG. 2A;
FIG. 4 is a schematic view of the structure in the direction B-B in FIG. 3;
fig. 5 is a schematic circuit diagram of a device for detecting integrity of a composite film.
In the figure: 1. a work table; 2. a rear vertical plate; 3. a sleeve; 4. a telescopic rod; 5. an upper roller; 6. a conductive adhesive layer is arranged on the upper surface; 7. enamelled wires; 8. a fixed shaft; 9. a collar; 10. a support plate; 11. an end frame; 12. a rotating shaft; 13. a lower drum; 14. a lower conductive adhesive layer; 15. a conductive wire; 16. a slip ring; 17. an extension body; 18. a metal elastic sheet; 19. an alignment key; 20. an alignment groove; 21. a circular support plate; 22. a current detection module; 23. a push rod.
Detailed Description
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1 to 5, in an embodiment of the invention, a device for detecting integrity of a composite film includes a workbench 1, a rear vertical plate 2 is fixedly connected to a rear side of an upper surface of the workbench 1, an end frame 11 is fixedly connected to a front side of the upper surface of the workbench 1, a fixed shaft 8 is fixedly connected between the rear vertical plate 2 and the end frame 11, a collar 9 is rotatably sleeved on one side of the surface of the fixed shaft 8, a supporting plate 10 is fixedly connected to a surface of the collar 9, an upper roller 5 is fixedly connected to an end of the supporting plate 10, the other end of the upper roller 5 is clamped into the rear vertical plate 2, an upper conductive adhesive layer 6 is adhered to a surface of the upper roller 5, a rotating shaft 12 is rotatably arranged in the workbench 1, the rotating shaft 12 is located under the fixed shaft 8, a circular supporting plate 21 is fixedly connected to a surface of the rotating shaft 12, a lower roller 13 is fixedly connected to the other end of the circular supporting plate 21, and a lower conductive adhesive layer 14 is adhered to an outer surface of the lower roller 13.
Preferably, the upper roller 5 and the lower roller 13 are cylindrical, the central axis of the upper roller 5 coincides with the central axis of the fixed shaft 8, the central axis of the lower roller 13 coincides with the central axis of the rotating shaft 12, the highest side of the lower roller 13 extends to the upper surface of the workbench 1, the highest side of the lower conductive adhesive layer 14 and the lowest side of the slip ring 16 are in mutual extrusion contact, the upper conductive adhesive layer 6 and the lower conductive adhesive layer 14 are made of elastic conductive materials, when the surface of the composite film is damaged, the upper conductive adhesive layer 6 and the lower conductive adhesive layer 14 have elasticity, and when part of the composite film between the upper conductive adhesive layer 6 and the lower conductive adhesive layer 14 is damaged, the upper conductive adhesive layer 6 and the lower conductive adhesive layer 14 are in mutual contact, so that a circuit is completed.
Preferably, the inner wall of the upper roller 5 is spirally wound with the enameled wire 7, two adjacent circles of the enameled wire 7 are mutually closely attached, one side surface of the enameled wire 7, which faces the fixed shaft 8, is paint-free, the end part, which is close to the outer side, of the enameled wire 7 is connected with the upper conductive adhesive layer 6 through the conductive metal wire 15, and the other end of the enameled wire 7 is connected with the current detection module 22.
Preferably, the surface cover of fixed axle 8 is equipped with slip ring 16, and the outer surface rigid coupling of slip ring 16's lower extreme has extension 17, and the lower extreme rigid coupling of extension 17 has metal elastic sheet 18, and the lower extreme of metal elastic sheet 18 is sharp angle setting, and the lower extreme of metal elastic sheet 18 is taken to lean on the enameled wire 7 surface and is not had the lacquer setting department, and the range of movement of metal elastic sheet 18 is the product of enameled wire 7 diameter and a certain number of turns for when metal elastic sheet 18 removes, can all contact with the surface of enameled wire 7.
Preferably, the surface of the fixed shaft 8 is provided with an alignment groove 20, an alignment key 19 is fixedly connected to the inner wall of the sliding ring 16, and the alignment key 19 is clamped inside the alignment groove 20 to perform alignment during installation.
Preferably, the rear side wall of the rear vertical plate 2 is fixedly connected with a sleeve 3, the sleeve 3 and the fixed shaft 8 are positioned on the same central axis, the rear side of the sleeve 3 is fixedly connected with a telescopic rod 4, the driving end of the telescopic rod 4 faces the rear vertical plate 2, the driving end of the telescopic rod 4 is fixedly connected with a push rod 23, and the front end of the push rod 23 penetrates through the rear vertical plate 2 and is fixedly connected to the rear side surface of the sliding ring 16, so that the upper conductive adhesive layer 5 and the enameled wire 7 are mutually connected.
Preferably, the sleeve 3 is transparent, and the surface of the sleeve 3 is provided with a scale for observing the position corresponding to the end of the driving end of the telescopic rod 4 and the scale on the surface of the sleeve 3, when the current detection module 22 detects the maximum current, the telescopic rod 4 is stopped, and at the moment, the damaged part of the composite film can be judged by observing the position corresponding to the end of the driving end of the telescopic rod 4 and the scale on the surface of the sleeve 3, so that the damaged part can be conveniently and rapidly found for repairing, and the detection efficiency is improved.
Preferably, the current detection module 22 may be an ammeter, a clamp meter or a variable frequency power analyzer, which are known in the art and are not described herein.
The working principle of the invention is as follows: when the detection device is used for detecting the integrity of the composite film, the front end of the composite film firstly passes through the space between the upper conductive adhesive layer 6 and the lower conductive adhesive layer 14, then the subsequent composite film is paved on the surface of the workbench 1, the front end of the composite film is slowly pulled, the upper roller 5 and the lower roller 13 rotate, when the surface of the composite film is damaged, the upper conductive adhesive layer 6 and the lower conductive adhesive layer 14 have elasticity, when part of the composite film between the upper conductive adhesive layer 6 and the lower conductive adhesive layer 14 is damaged, the upper conductive adhesive layer 6 and the lower conductive adhesive layer 14 are mutually contacted, so that a circuit is connected, the current detection module 22 is connected, the part of the composite film is damaged, then the push rod 23 is pushed by the telescopic rod 4, the sliding ring 16 slides on the surface of the fixed shaft 8, the metal elastic sheet 18 is contacted back and forth at the paint-free position of the 7 surface of the enameled wire, when the current detection module 22 detects the maximum current, the telescopic rod 4 stops, and the position corresponding to the tail end of the driving end of the telescopic rod 4 and the surface scale of the sleeve 3 can be judged that the part of the composite film is damaged, so that the circuit is connected, and the repair efficiency is convenient to be improved.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a complex film integrality detection device, includes workstation (1), its characterized in that: the utility model discloses a high-speed electric power machine, including workstation (1) and fixed axle (8), upper surface rear side rigid coupling of workstation (1) has back riser (2), the upper surface front side rigid coupling of workstation (1) has tip frame (11), back riser (2) with joint has fixed axle (8) between tip frame (11), the surface of fixed axle (8) and one side that is close to tip frame (11) rotate and cup joint lantern ring (9), just lantern ring (9) surface rigid coupling has backup pad (10), the tip rigid coupling of backup pad (10) has upper portion cylinder (5), the inside of back riser (2) is gone into to the other end card of upper portion cylinder (5), the surface of upper portion cylinder (5) is applied with upper conductive adhesive layer (6), the inside rotation of workstation (1) is provided with axis of rotation (12), axis of rotation (12) are located the direct below of fixed axle (8), the surface rigid coupling of axis of rotation (12) has circular backup pad (21), the other end rigid coupling of circular backup pad (21) has lower part cylinder (13), the outside of lower part (13) is applied with conductive adhesive layer (14).
2. The composite membrane integrity test device of claim 1, wherein: the upper roller (5) and the lower roller (13) are cylindrical, the central axis of the upper roller (5) is coincident with the central axis of the fixed shaft (8), and the central axis of the lower roller (13) is coincident with the central axis of the rotating shaft (12).
3. A composite membrane integrity test apparatus as claimed in claim 2, wherein: the highest side of the lower roller (13) extends to the upper surface of the workbench (1), the highest side of the lower conductive adhesive layer (14) and the lowest side of the slip ring (16) are in mutual extrusion contact, and the upper conductive adhesive layer (6) and the lower conductive adhesive layer (14) are made of elastic conductive materials.
4. The composite membrane integrity test device of claim 1, wherein: the inner wall of upper portion cylinder (5) is spiral winding has enameled wire (7), just enameled wire (7) adjacent two circles are close to each other, enameled wire (7) orientation one side surface of fixed axle (8) is the no lacquer setting, enameled wire (7) be close to the tip in the outside with go up connect through electrically conductive wire (15) between electrically conductive glue film (6), the other end of enameled wire (7) is connected with current detection module (22).
5. The composite membrane integrity test device of claim 4, wherein: the surface cover of fixed axle (8) is equipped with slip ring (16), the outer surface rigid coupling of the lower extreme of slip ring (16) has extension body (17), the lower extreme rigid coupling of extension body (17) has metal elastic sheet (18), the lower extreme of metal elastic sheet (18) is the closed angle setting, just the lower extreme of metal elastic sheet (18) is taken and is leaned on enameled wire (7) surface does not have lacquer setting department.
6. The composite membrane integrity test device of claim 5, wherein: an alignment groove (20) is formed in the surface of the fixed shaft (8), an alignment key (19) is fixedly connected to the inner wall of the sliding ring (16), and the alignment key (19) is clamped in the alignment groove (20).
7. The composite membrane integrity test device of claim 5, wherein: the utility model discloses a sliding ring, including back riser (2), sleeve (3), fixed axle (8), telescopic link (4) are located same axis to the back lateral wall rigid coupling of back riser (2), sleeve (3) with fixed axle (8), the rear side rigid coupling of sleeve (3) has, just the drive end orientation of telescopic link (4) back riser (2), the drive end rigid coupling of telescopic link (4) has push rod (23), just the front end of push rod (23) pass back riser (2) and rigid coupling in the trailing flank of sliding ring (16).
8. The composite membrane integrity test device of claim 6, wherein: the moving range of the metal elastic sheet (18) is the product of the diameter of the enameled wire (7) and all the turns.
9. The composite membrane integrity test device of claim 7, wherein: the sleeve (3) is arranged in a transparent mode, and a scale is arranged on the surface of the sleeve (3).
10. The composite membrane integrity test device of claim 4, wherein: the current detection module (22) can be an ammeter, a clamp meter or a variable frequency electric quantity analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211680077.9A CN116087285A (en) | 2022-12-27 | 2022-12-27 | Complex film integrality detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211680077.9A CN116087285A (en) | 2022-12-27 | 2022-12-27 | Complex film integrality detection device |
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| Publication Number | Publication Date |
|---|---|
| CN116087285A true CN116087285A (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211680077.9A Pending CN116087285A (en) | 2022-12-27 | 2022-12-27 | Complex film integrality detection device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002022695A (en) * | 2000-07-12 | 2002-01-23 | Tokyo Gas Co Ltd | Method for detecting coating film damage position of embedded coated piping |
| JP2003307509A (en) * | 2002-04-15 | 2003-10-31 | Jiyooben Denki Kk | Pinhole inspection method for insulating covering material |
| CN102539482A (en) * | 2012-02-09 | 2012-07-04 | 重庆师范大学 | Micro-current detection system for micropore defect of transparent film |
| CN204740221U (en) * | 2015-07-24 | 2015-11-04 | 浙江中科恒泰新材料科技有限公司 | An insulating film damage detection device |
| CN108663409A (en) * | 2018-08-03 | 2018-10-16 | 上海颀普静电科技有限公司 | A kind of film micropore defect detecting system |
| CN111781245A (en) * | 2020-07-30 | 2020-10-16 | 芜湖金奥微细漆包线有限公司 | On-line detection device and detection method for damage to enameled wire paint film |
| CN112345594A (en) * | 2020-11-20 | 2021-02-09 | 中国科学院工程热物理研究所 | Material damage detection method and device |
| CN114660121A (en) * | 2022-03-25 | 2022-06-24 | 佛山市迈世创科技有限公司 | Enameled wire paint film breakage on-line measuring device |
-
2022
- 2022-12-27 CN CN202211680077.9A patent/CN116087285A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002022695A (en) * | 2000-07-12 | 2002-01-23 | Tokyo Gas Co Ltd | Method for detecting coating film damage position of embedded coated piping |
| JP2003307509A (en) * | 2002-04-15 | 2003-10-31 | Jiyooben Denki Kk | Pinhole inspection method for insulating covering material |
| CN102539482A (en) * | 2012-02-09 | 2012-07-04 | 重庆师范大学 | Micro-current detection system for micropore defect of transparent film |
| CN204740221U (en) * | 2015-07-24 | 2015-11-04 | 浙江中科恒泰新材料科技有限公司 | An insulating film damage detection device |
| CN108663409A (en) * | 2018-08-03 | 2018-10-16 | 上海颀普静电科技有限公司 | A kind of film micropore defect detecting system |
| CN111781245A (en) * | 2020-07-30 | 2020-10-16 | 芜湖金奥微细漆包线有限公司 | On-line detection device and detection method for damage to enameled wire paint film |
| CN112345594A (en) * | 2020-11-20 | 2021-02-09 | 中国科学院工程热物理研究所 | Material damage detection method and device |
| CN114660121A (en) * | 2022-03-25 | 2022-06-24 | 佛山市迈世创科技有限公司 | Enameled wire paint film breakage on-line measuring device |
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