CN115106191A - Collecting device, collecting method and detecting method for metal particles on surface of flexible membrane material - Google Patents
Collecting device, collecting method and detecting method for metal particles on surface of flexible membrane material Download PDFInfo
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- CN115106191A CN115106191A CN202210759828.XA CN202210759828A CN115106191A CN 115106191 A CN115106191 A CN 115106191A CN 202210759828 A CN202210759828 A CN 202210759828A CN 115106191 A CN115106191 A CN 115106191A
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- 239000002923 metal particle Substances 0.000 title claims abstract description 113
- 239000012528 membrane Substances 0.000 title claims abstract description 38
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- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 239000002390 adhesive tape Substances 0.000 claims description 22
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- 238000001514 detection method Methods 0.000 claims description 18
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- 238000005096 rolling process Methods 0.000 abstract description 3
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
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- 238000012360 testing method Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Optical investigation techniques, e.g. flow cytometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Optical investigation techniques, e.g. flow cytometry
- G01N2015/1486—Counting the particles
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The invention relates to a device, a method and a method for collecting metal particles on the surface of a flexible film material. In the collecting device of flexible membrane material surface metal particle, mainly through the cooperation of unreeling roller, transmission device, magnetism spare and wind-up roll, transmit flexible membrane material through transmission device, carry out the rolling and unreel to flexible membrane material respectively through unreeling roller and wind-up roll. In the transmission process of the flexible membrane material, the magnetic part adsorbs the metal particles on the surface of the flexible membrane material so as to collect the metal particles on the surface of the flexible membrane material. Meanwhile, the metal particles on the surface of the flexible film material are collected through the collecting equipment, so that the metal particles on the surface of the flexible film material are effectively removed, the surface state of the flexible film material can be improved, and the use performance of the flexible film material is improved.
Description
Technical Field
The invention relates to the technical field of surface detection of flexible film materials, in particular to a device for collecting metal particles on the surface of a flexible film material, a method for collecting metal particles on the surface of the flexible film material and a method for detecting metal particles on the surface of the flexible film material.
Background
With the continuous popularization of flexible films, the performance requirements on the flexible films in production are higher and higher. The performance of the flexible film is mainly reflected in two aspects of the performance and the surface state of the film. The self-performance of the membrane material directly influences the use of the membrane material, and the surface state of the membrane material also has important influence on the use of the membrane material. For example, in the preparation of lithium batteries, flexible films such as copper foils, aluminum foil separators, and current collectors are used. These flexible films have a problem in that some metal particles adhere to the surface thereof during the production and use thereof, which is difficult to avoid. In this case, when the film material having the metal particles attached to the surface thereof is applied to the assembly of the battery, the battery is greatly damaged. For example, metal particles penetrate the separator to cause short circuits, and the active material is unevenly distributed due to the adhesion of metal particles, thereby affecting the cycle performance of the battery. Therefore, the removal of the metal particles on the surface of the flexible film material is of great significance to the improvement of the service performance of the flexible film material.
Disclosure of Invention
Based on this, it is necessary to provide an apparatus capable of effectively collecting metal particles on the surface of a flexible film, a collecting method, and a method of detecting metal particles.
In order to solve the above technical problems, a technical solution of an embodiment of the present invention is:
a collecting device for metal particles on the surface of a flexible film material comprises a rack, an unwinding roller, a transmission device, a magnetic part and a winding roller; the conveying device is connected to the rack, a conveying channel is arranged on the conveying device, and the conveying channel is provided with a feeding end and a discharging end; the unwinding roller and the winding roller are respectively connected to the rack, the unwinding roller is positioned at the feeding end of the transmission channel and used for unwinding the flexible film material, and the winding roller is positioned at the discharging end of the transmission channel and used for winding the flexible film material; the magnetic part is connected to the rack, and the magnetic part is located on at least one side of the transmission channel and used for adsorbing metal particles on the surface of the flexible membrane material.
In one embodiment, the magnetic members are multiple, and the multiple magnetic members are respectively arranged on two sides of the transmission channel.
In one embodiment, the magnetic member is formed by sequentially splicing a plurality of magnetic blocks.
In one embodiment, a guide piece is arranged on the machine frame, and the magnetic piece is movably connected to the guide piece to be used for adjusting the distance between the magnetic piece and the transmission channel so as to adjust the distance between the magnetic piece and the surface of the flexible film.
In one embodiment, the transport device comprises a guide roller connected to the frame for guiding the flexible film through the transport channel.
In one embodiment, the collecting apparatus for metal particles on the surface of the flexible film further comprises a pressure roller movably connected to the frame, the distance between the pressure roller and the wind-up roller is adjustable, and the pressure roller can move to abut against the flexible film on the wind-up roller.
In one embodiment, the device for collecting metal particles on the surface of the flexible film further comprises a tension roller connected to the machine frame for adjusting the tension of the flexible film.
A method for collecting metal particles on the surface of a flexible film material by using the device for collecting metal particles on the surface of a flexible film material in any embodiment of the invention comprises the following steps:
mounting a rolled flexible film material on an unwinding roller for unwinding, and transmitting the flexible film material to a winding roller for winding through the transmission device;
and adsorbing the metal particles on the surface of the flexible film material by the magnetic part.
In one embodiment, the conveying speed of the flexible film material is controlled to be 10 m/min-100 m/min.
In one embodiment, the distance between the magnetic part and the surface of the flexible film is controlled to be 0-20 mm.
In one embodiment, the tension of the flexible film material is controlled to be 3N-100N.
A detection method for metal particles on the surface of a flexible film material comprises the following steps:
collecting the metal particles on the surface of the flexible membrane material by adopting the collection method;
transferring the metal particles adsorbed by the magnetic part to an adhesive tape;
and detecting the metal particles on the adhesive tape.
In one embodiment, the metal particles on the tape are detected by polarized light.
Among the collecting device of above-mentioned flexible membrane material surface metal particle, mainly through the cooperation of unreeling roller, transmission device, magnetism spare and wind-up roll, transmit flexible membrane material through transmission device, carry out the rolling and unreel to flexible membrane material respectively through unreeling roller and wind-up roll. In the transmission process of the flexible membrane material, the magnetic part adsorbs the metal particles on the surface of the flexible membrane material so as to collect the metal particles on the surface of the flexible membrane material. Meanwhile, the metal particles on the surface of the flexible film material are collected through the collecting equipment, so that the metal particles on the surface of the flexible film material are effectively removed, the surface state of the flexible film material can be improved, and the use performance of the flexible film material is improved.
The collecting method of the metal particles on the surface of the flexible film material adopts the collecting equipment of the metal particles on the surface of the flexible film material, the operation method is simple and easy to implement when the metal particles on the surface of the flexible film material are collected, the complicated equipment and operation are not needed, the cost for collecting and removing the metal particles on the surface of the flexible film material can be reduced, and the efficiency for collecting and removing the metal particles on the surface of the flexible film material is improved.
The method for detecting the metal particles on the surface of the flexible film material mainly collects the metal particles on the surface of the flexible film material to the surface of the magnetic part by the method for collecting the metal particles on the surface of the flexible film material, transfers the metal particles on the surface of the magnetic part to the adhesive tape, and then detects the metal particles on the adhesive tape. In the detection method of the metal particles on the surface of the flexible film, the metal particles transferred to the adhesive tape are taken as the metal particles on the surface of the whole flexible film, so that the surface state of the whole flexible film can be represented, and the authenticity and reliability of detection can be further improved.
Further, when the metal particles on the surface of the flexible film are detected, the particles on the adhesive tape are detected through polarized light, so that the size and the number of the metal particles can be accurately judged, and the surface state of the flexible film is more truly reflected.
Drawings
Fig. 1 is a schematic structural diagram of a device for collecting metal particles on the surface of a flexible film according to an embodiment of the present invention.
The notation in the figure is:
100. collecting equipment for metal particles on the surface of the flexible membrane material; 101. a frame; 102. unwinding the roller; 103. a material guide roller; 104. a magnetic member; 105. a wind-up roll; 106. a pressure roller; 107. a tension roller; 108. a backup roll; 109. a guide; 200. a flexible film material.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, an embodiment of the invention provides an apparatus 100 for collecting metal particles on a surface of a flexible film. The collecting device 100 for the metal particles on the surface of the flexible film material comprises a frame 101, an unreeling roller 102, a transmission device, a magnetic piece 104 and a reeling roller 105; the transmission device is connected to the rack 101, a transmission channel is arranged on the transmission device, and the transmission channel is provided with a feeding end and a discharging end; the unwinding roller 102 and the winding roller 105 are respectively connected to the rack 101, the unwinding roller 102 is located at the feed end of the transmission channel and used for unwinding the flexible film material 200, and the winding roller 105 is located at the discharge end of the transmission channel and used for winding the flexible film material 200; the magnetic member 104 is connected to the frame 101, and the magnetic member 104 is located on at least one side of the transmission channel for adsorbing the metal particles on the surface of the flexible film 200. In the collecting apparatus 100 for metal particles on the surface of a flexible film material of the embodiment, the flexible film material 200 is transmitted through the transmission device mainly through the cooperation of the unreeling roller 102, the transmission device, the magnetic member 104 and the reeling roller 105, and the flexible film material 200 is reeled and unreeled through the unreeling roller 102 and the reeling roller 105 respectively. In the transmission process of the flexible film 200, the magnetic member 104 adsorbs the metal particles on the surface of the flexible film 200 to collect the metal particles on the surface of the flexible film 200. Meanwhile, the metal particles on the surface of the flexible membrane material 200 are collected through the collecting device, so that the metal particles on the surface of the flexible membrane material 200 are effectively removed, the surface state of the flexible membrane material 200 can be improved, and the use performance of the flexible membrane material 200 is improved.
It can be understood that when the flexible film 200 is transported in the transportation channel, the magnetic member 104 is disposed on at least one side of the transportation channel, so as to adsorb particles on at least one surface of the flexible film 200. In order to improve the adsorption effect of the magnetic member 104 on the particles on the surface of the flexible film, the magnetic member 104 is disposed on both sides of the transmission channel.
Specifically, there are a plurality of magnetic members 104, and the plurality of magnetic members 104 are respectively disposed at two sides of the transmission channel. Optionally, the number of magnetic members 104 is 2 to 10. For example, the number of magnetic elements 104 may be, but is not limited to, 2, 3, 5, 6, 8, etc. In the embodiment shown in fig. 1, the number of the magnetic members 104 is 2, and 2 magnetic members 104 are respectively disposed at two sides of the transmission channel. Optionally, the number of the magnetic members 104 is even, and further optionally, the magnetic members 104 on both sides of the transmission channel are arranged in a staggered manner. Further alternatively, the magnetic members 104 on both sides of the transmission channel are respectively arranged in a one-to-one manner.
In one specific example, the magnetic member 104 is pivotably coupled to the frame 101. The metal particles adsorbed on the magnetic member 104 can be conveniently transferred to the adhesive tape by turning the magnetic member 104. Optionally, the magnetic member 104 is connected to the frame 101 by a snap (not shown), and the magnetic member 104 can be conveniently connected to the frame 101 in a reversible manner by the snap connection. Specifically, the clasp is a stainless steel clasp.
In one particular example, the magnetic member 104 is a permanent magnet or an electromagnet. Alternatively, the magnetic member 104 has a magnetic field strength of 8000GS to 20000 GS. Alternatively, the magnetic field strength of the magnetic member 104 may be, but is not limited to, 8000GS, 1000GS, 12000GS, 15000GS, 18000GS, or the like. Further optionally, the magnetic field intensity of the permanent magnet is 8000GS to 12000 GS. The magnetic field intensity of the electromagnet is 8000 GS-20000 GS.
In a specific example, the magnetic element 104 is formed by sequentially splicing a plurality of magnetic blocks. Specifically, the magnetic member 104 is formed by sequentially splicing a plurality of magnetic blocks along the length direction thereof. The magnetic pieces 104 are spliced by the plurality of magnetic blocks, so that a more uniform magnetic field can be obtained, and adsorption dead angles are reduced. Optionally, the number of the magnetic blocks is 2-10. For example, the number of magnetic blocks may be, but is not limited to, 2, 3, 5, 6, 8, etc. Further optionally, the length of the magnetic block is 0.1m to 0.5 m. For example, the length of the magnetic block may be, but is not limited to, 0.1mm, 0.2mm, 0.3mm, 0.4mm, or 0.5 mm. Further alternatively, the plurality of magnetic blocks in the magnetic element 104 are the same magnetic block.
In a specific example, the frame 101 is provided with a guide 109, and the magnetic member 104 is movably connected to the guide 109 for adjusting a distance between the magnetic member 104 and the transmission channel, and further adjusting a distance between the magnetic member 104 and the surface of the flexible film 200. Through the setting of guide piece 109, be convenient for adjust the position of magnetic part 104, and then adjust the distance between the surface of magnetic part 104 and flexible membrane material 200, improve the adsorption effect of magnetic part 104 to flexible membrane material 200 surface metal particle. Optionally, the guide 109 is a sliding rail. At this time, the magnetic member 104 is slidably coupled to the guide 109. It can be understood that, in order to facilitate the installation of the magnetic element 104, a slider is disposed on the slide rail, the slider can slide on the slide rail, the magnetic element 104 is fixed on the slider, and then the slider slides to drive the magnetic element 104 to move along the slide rail.
It is understood that the conveying device includes a guide roller 103, and the guide roller 103 is connected to the frame 101 for guiding the flexible film 200 through the conveying passage. It will also be appreciated that the guide roll 103 cooperates with the unwind roll 102 and the wind-up roll 105 to form a transport path. Further, the number of the material guide rollers 103 is 1 to 20. For example, the number of the guide rollers 103 may be, but is not limited to, 2, 3, 5, 6, 8, 10, 12, 15, 18, and the like. Still further, there are a plurality of the guide rollers 103. The shape of the transmission channel can be flexibly designed by the arrangement of the guide rollers 103, so that the transmission direction of the flexible film material 200 is adjusted, and meanwhile, the transmission stability of the flexible film material 200 can also be improved. In the embodiment shown in fig. 1, the number of the material guiding rollers 103 is 9, and the flexible film material 200 is stably conveyed by the arrangement of the 9 material guiding rollers 103.
In a specific example, the collecting apparatus 100 for metal particles on the surface of the flexible film further comprises a pressure roller 106, the pressure roller 106 is movably connected to the frame 101, the distance between the pressure roller 106 and the wind-up roller 105 is adjustable, and the pressure roller 106 can move to abut against the flexible film 200 on the wind-up roller 105. The pressure roller 106 is arranged on the frame 101, so that when the flexible film material 200 is wound, air between the layers of flexible film materials 200 on the winding roller 105 can be exhausted through the extrusion effect of the pressure roller 106, and the winding is more stable and compact.
In a specific example, the collecting apparatus 100 for metal particles on the surface of the flexible film further comprises a tension roller 107, and the tension roller 107 is connected to the frame 101 for adjusting the tension of the flexible film 200. Through the setting of tension roller 107, can adjust the tension of flexible membrane material 200, make flexible membrane material 200 transmit and the rolling more smoothly.
In another specific example, the collecting apparatus 100 for metal particles on the surface of the flexible film material further comprises a standby roller 108, and the standby roller 108 is connected to the frame 101 to replace the guide roller 103. When the material guiding roller 103 is damaged or needs to be replaced periodically, the material guiding roller 103 is replaced by the standby roller 108, so that the collecting device 100 for the metal particles on the surface of the flexible film material works stably.
It can be understood that in order to reduce the influence of particles generated by the rotation of the unwinding roller 102, the material guiding roller 103, the pressure roller 106, the tension roller 107, the winding roller 105 and the like on the collection and detection, the use of rollers can be reduced on the basis of keeping the flexible film material 200 normally transported. In addition, in order to reduce the risk of the generation of metal particles during the operation of the collecting device, ceramic bearings are selected as the bearings in the device. Meanwhile, a protective cover is additionally arranged at the position of the abrasion rotating part, so that the influence of particles generated when the equipment runs on collection and detection is further reduced.
In a specific example, the device 100 for collecting metal particles on the surface of the flexible film material is a device for collecting magnetic particles on the surface of the flexible film material 200. The magnetic particles are particles that can be attracted by the magnetic member 104.
In another embodiment of the present invention, a method for collecting metal particles on the surface of the flexible film 200 is provided. The collecting method adopts the collecting device 100 for the metal particles on the surface of the flexible membrane material, and comprises the following steps: mounting the rolled flexible film material 200 on an unwinding roller 102 for unwinding, and transmitting the flexible film material 200 to a winding roller 105 for winding through a transmission device; the magnetic member 104 attracts the metal particles on the surface of the flexible film 200. When the metal particles on the surface of the flexible membrane material 200 are collected, the collecting method is simple and easy to operate, does not need to depend on complex equipment and operation, can reduce the cost for collecting and removing the metal particles on the surface of the flexible membrane material 200, and improves the efficiency for collecting and removing the metal particles on the surface of the flexible membrane material 200.
Optionally, in the method for collecting the metal particles on the surface of the flexible film material 200, the conveying speed of the flexible film material 200 is controlled to be 10m/min to 100 m/min. The smaller the transmission speed of the flexible film material 200 is, the longer the action time of the magnetic member 104 and the particles on the surface of the flexible film material 200 is, and the better the adsorption effect is. In the actual production process, the transmission speed can be designed according to production plan arrangement and the like. For example, the transmission speed of the flexible film 200 is controlled to be 10m/min, 30m/min, 50m/min, 60m/min, 80m/min or 90 m/min.
Optionally, in the method for collecting metal particles on the surface of the flexible film material 200, the distance between the magnetic member 104 and the surface of the flexible film material 200 is controlled to be 0mm to 20 mm. The magnetic field intensity of the magnetic part 104 is gradually reduced from near to far, the smaller the distance between the magnetic part 104 and the surface of the flexible film material 200 is, the greater the action intensity of the particles on the surfaces of the magnetic part 104 and the flexible film material 200 is, and the better the adsorption effect is. The distance between the magnetic member 104 and the surface of the flexible film 200 in the actual production process mainly depends on the flatness of the flexible film 200, i.e. the distance is small, and it needs to be ensured that the magnetic member 104 cannot touch the surface of the flexible film 200, so as to prevent the surface of the flexible film 200 from being scratched, for example, the distance between the magnetic member 104 and the surface of the flexible film 200 is controlled to be 1mm, 5mm, 8mm, 10mm, 15mm, 18mm, and so on. Preferably, the distance between the magnetic member 104 and the surface of the flexible film 200 is controlled to be 2mm to 5 mm.
Optionally, in the method for collecting the metal particles on the surface of the flexible film material 200, the tension of the flexible film material 200 is controlled to be 3N to 100N. For example, the tension of the flexible film 200 is controlled to be 5N, 10N, 20N, 50N, 80N, or the like.
It is understood that the mounting of the rolled flexible film 200 onto the unwinding roll 102 further comprises the following steps: the collecting device 100 for the metal particles on the surface of the flexible film material is cleaned, and specifically, the roller, the magnetic member 104 and the like of the collecting device are cleaned. More specifically, the roller of the collecting device, the magnetic member 104, and the like are cleaned using alcohol, dust-free cloth, an adhesive tape, and the like.
In another embodiment of the present invention, a method for detecting metal particles on a surface of a flexible film 200 is provided. The detection method of the metal particles on the surface of the flexible membrane material 200 comprises the following steps: collecting the metal particles on the surface of the flexible membrane material 200 by adopting the collecting method; transferring the metal particles adsorbed by the magnetic member 104 to the adhesive tape; and detecting the metal particles on the adhesive tape. In the detection method, the particles on the surface of the flexible film material 200 are collected on the surface of the magnetic member 104 by the collection method of the metal particles on the surface of the flexible film material 200, the metal particles on the surface of the magnetic member 104 are transferred to the adhesive tape, and then the metal particles on the adhesive tape are detected. In the method for detecting metal particles on the surface of the flexible film material 200, the metal particles transferred to the adhesive tape are used as the metal particles on the surface of the whole flexible film material 200, which can represent the surface state of the whole flexible film material 200, and further can improve the authenticity and reliability of detection. Meanwhile, the detection method for the metal particles on the surface of the flexible film material 200 has a wide application range, and can obtain relatively accurate test results for both transparent and opaque flexible film materials 200.
Regarding the detection method of the metal particles on the surface of the flexible film material 200, the traditional method mainly adopts a scanning electron microscope method and a CCD surface flaw detection method. The scanning electron microscope method is characterized in that a detection object is cut on a coil stock to be made into an electron microscope sample with the size of 3mm multiplied by 5mm, the electron microscope sample is placed on a test sample carrying table, a narrow high-energy electron beam focused by an electron microscope is used for scanning the sample, various physical information is excited through the interaction between a light beam and a substance, the information is collected, amplified and re-imaged to achieve the representation of the microscopic appearance of the substance, an electron microscope system is configured with an EDS element analysis function, and whether metal particles are contained on the surface or not is analyzed through analyzing the element components of the substance on the microscopic surface. The scanning electron microscope method needs to rely on expensive electron microscope equipment, has small sampling area and larger contingency, and is difficult to reflect the real surface state of the whole flexible film. The CCD surface flaw detection method is used for detecting a thin film material with high light transmittance in a transmission polishing detection mode, namely, a light source is arranged below the thin film, and a camera is used for shooting images above the thin film. When the production line runs, the system collects production line running state information in real time through the encoder and starts to detect, the system carries out flaw processing on images collected by the camera through SIMV image analysis software, and due to the fact that the flaws are obviously different from images of normal products in gray scale, the system can find the flaws and further calculate and analyze the flaws to determine information such as sizes, positions and types of the flaws. The CCD surface flaw detection method is small in application range, the main detection object is a light-transmitting material, and the application range is narrow. It cannot be used for opaque materials such as copper foil and aluminum foil.
In one particular example, the metal particles on the tape are detected by polarized light. When the metal particles on the surface of the flexible film material 200 are detected, the particles on the adhesive tape are detected by polarized light, so that the size and the number of the metal particles can be accurately judged, and the surface state of the flexible film material 200 can be reflected more truly. In particular, the physical properties of the metal surface determine that light cannot enter the metal mass and will reflect incident light out like a mirror. After the incident light is reflected by the metal surface, the reflected light has the same vibration direction as the incident light; after the incident light passes through the non-metallic substance, the vibration direction of the incident light is changed (mainly because the incident light is emitted into the non-metallic substance), and the reflected light which passes through the interior of the non-metallic substance and comes out does not have polarization any more, and the direction of the reflected light is also changed. By using the principle, polarized light can pass through the polarizers with the same direction to enter the camera, and when the two polarizers are in a cross position (one of the polarizers is rotated by 90 degrees), the polarized reflected light cannot pass through the second polarizer. The metal particles are black in the cross state, so that whether the metal particles are the metal particles or not is judged, and the size and the number of the metal particles reflect the surface state of the flexible film material 200 more truly. Optionally, when the particles on the adhesive tape are detected by polarized light, a JOMES polarized light tester is used to detect the particles on the adhesive tape.
Alternatively, as an example of selection of the adhesive tape, the adhesive tape includes mylar tape, scotch tape, double-sided tape, or PP tape. In one specific example, the tape is a mylar tape, and the mylar tape is cut into a square having a length and width of 5mm × 5mm at the time of inspection, and the particle transfer is performed by moving 4cm each time, and the adhesion is repeated 3 times at each position.
In a specific example, when the particles adsorbed by the magnetic member 104 are transferred to the adhesive tape, the adhesive tape is used to perform adhesive transfer on the metal particles adsorbed by the magnetic member 104. Wherein the requirement for particle transfer meets the following two requirements: the number of second times of sticking is less than 30% of the sum of the first two times, and the number of last times of sticking is less than 10% of the sum of all the previous times. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims, and the description and the drawings can be used for explaining the contents of the claims.
Claims (10)
1. The collecting equipment for the metal particles on the surface of the flexible film material is characterized by comprising a rack, an unwinding roller, a transmission device, a magnetic part and a winding roller; the transmission device is connected to the rack, a transmission channel is arranged on the transmission device, and the transmission channel is provided with a feeding end and a discharging end; the unwinding roller and the winding roller are respectively connected to the rack, the unwinding roller is positioned at the feeding end of the transmission channel and used for unwinding the flexible film material, and the winding roller is positioned at the discharging end of the transmission channel and used for winding the flexible film material; the magnetic part is connected to the rack, and the magnetic part is located on at least one side of the transmission channel and used for adsorbing metal particles on the surface of the flexible membrane material.
2. The apparatus as claimed in claim 1, wherein the magnetic members are disposed on two sides of the conveying channel.
3. The device for collecting metal particles on the surface of a flexible film material as claimed in claim 1, wherein the magnetic member is formed by sequentially splicing a plurality of magnetic blocks.
4. The apparatus as claimed in claim 1, wherein the frame is provided with a guide member, and the magnetic member is movably connected to the guide member for adjusting a distance between the magnetic member and the conveying passage, so as to adjust a distance between the magnetic member and a surface of the flexible film.
5. The apparatus as claimed in claim 1, wherein the conveyor comprises a guide roller connected to the frame for guiding the flexible film through the conveyor channel.
6. The collecting device for the metal particles on the surface of the flexible film material according to any one of claims 1 to 5, further comprising a pressure roller, wherein the pressure roller is movably connected to the frame, the distance between the pressure roller and the wind-up roller is adjustable, and the pressure roller can move to abut against the flexible film material on the wind-up roller; and/or the presence of a gas in the gas,
still include the tension roll, the tension roll connect in the frame is in order to be used for adjusting the tension of flexible membrane material.
7. A method for collecting metal particles on the surface of a flexible film material, which is characterized by adopting the device for collecting metal particles on the surface of a flexible film material as claimed in any one of claims 1 to 6, and comprises the following steps:
mounting a rolled flexible film material on an unwinding roller for unwinding, and transmitting the flexible film material to a winding roller for winding through the transmission device;
and adsorbing the metal particles on the surface of the flexible film material through the magnetic part.
8. The method for collecting the metal particles on the surface of the flexible film material as claimed in claim 7, wherein the transmission speed of the flexible film material is controlled to be 10m/min to 100 m/min; and/or the presence of a gas in the gas,
controlling the distance between the magnetic part and the surface of the flexible film material to be 0-20 mm; and/or the presence of a gas in the gas,
controlling the tension of the flexible film material to be 3N-100N.
9. A detection method for metal particles on the surface of a flexible film material is characterized by comprising the following steps:
collecting metal particles on the surface of a flexible membrane material by using the collecting method of claim 8;
transferring the metal particles adsorbed by the magnetic part to an adhesive tape;
and detecting the metal particles on the adhesive tape.
10. The method of claim 9, wherein the metal particles on the tape are detected by polarized light.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210759828.XA CN115106191A (en) | 2022-06-30 | 2022-06-30 | Collecting device, collecting method and detecting method for metal particles on surface of flexible membrane material |
| PCT/CN2022/116816 WO2024000806A1 (en) | 2022-06-30 | 2022-09-02 | Collection apparatus for metal particles on surface of flexible membrane material, collection method, and detection method |
| PCT/CN2023/104576 WO2024002333A1 (en) | 2022-06-30 | 2023-06-30 | Collection device, collection method and detection method for magnetic metal particles on surfaces of flexible film material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210759828.XA CN115106191A (en) | 2022-06-30 | 2022-06-30 | Collecting device, collecting method and detecting method for metal particles on surface of flexible membrane material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115106191A true CN115106191A (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210759828.XA Withdrawn CN115106191A (en) | 2022-06-30 | 2022-06-30 | Collecting device, collecting method and detecting method for metal particles on surface of flexible membrane material |
Country Status (2)
| Country | Link |
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| CN (1) | CN115106191A (en) |
| WO (1) | WO2024000806A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024002333A1 (en) * | 2022-06-30 | 2024-01-04 | 扬州纳力新材料科技有限公司 | Collection device, collection method and detection method for magnetic metal particles on surfaces of flexible film material |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2671494B1 (en) * | 1991-01-10 | 1994-01-14 | Andrin Fils Ets G | MAGNETIC PARTICLE SEPARATOR IN NON - FERROUS METAL. |
| US7113277B2 (en) * | 2003-05-14 | 2006-09-26 | Lockheed Martin Corporation | System and method of aerosolized agent capture and detection |
| FR2951961B1 (en) * | 2009-10-30 | 2011-11-04 | Snecma | DEVICE AND METHOD FOR RECOVERING MAGNETIC PARTICLES SPILLED ON A MAGNETIC CAP |
| DE102013219181B4 (en) * | 2013-09-24 | 2018-05-09 | Olympus Soft Imaging Solutions Gmbh | Apparatus and method for the optical determination of particle properties |
| CN103991732B (en) * | 2014-05-26 | 2016-04-20 | 苏州百骐电子材料有限公司 | Heating type electronic film winding device |
| CN105035812B (en) * | 2015-06-10 | 2020-06-05 | 东莞市途锐机械有限公司 | Multi-station full-automatic central surface coiling machine |
| CN215354799U (en) * | 2021-05-17 | 2021-12-31 | 宁德卓高新材料科技有限公司 | Compound function rewinding machine |
-
2022
- 2022-06-30 CN CN202210759828.XA patent/CN115106191A/en not_active Withdrawn
- 2022-09-02 WO PCT/CN2022/116816 patent/WO2024000806A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024002333A1 (en) * | 2022-06-30 | 2024-01-04 | 扬州纳力新材料科技有限公司 | Collection device, collection method and detection method for magnetic metal particles on surfaces of flexible film material |
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| WO2024000806A1 (en) | 2024-01-04 |
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