WO2024000806A1

WO2024000806A1 - Collection apparatus for metal particles on surface of flexible membrane material, collection method, and detection method

Info

Publication number: WO2024000806A1
Application number: PCT/CN2022/116816
Authority: WO
Inventors: 刘科; 金骋; 武亚红
Original assignee: 扬州纳力新材料科技有限公司
Priority date: 2022-06-30
Filing date: 2022-09-02
Publication date: 2024-01-04
Also published as: CN115106191A

Abstract

A collection apparatus (100) for metal particles on a surface of a flexible membrane material (200), a collection method, and a detection method. In the collection apparatus (100) for the metal particles on the surface of the flexible membrane material (200), the flexible membrane material (200) is transmitted by a transmission device mainly by means of the cooperation of an unwinding roller (102), the transmission device, a magnetic member (104) and a winding roller (105), and the flexible membrane material (200) is respectively wound and unwound by means of the unwinding roller (102) and the winding roller (105). During transmission of the flexible membrane material (200), the metal particles on the surface of the flexible membrane material (200) are adsorbed by means of the magnetic member (104), so as to collect the metal particles on the surface of the flexible membrane material (200). In addition, the metal particles on the surface of the flexible membrane material (200) are collected by means of the collection apparatus (100), so that the metal particles on the surface of the flexible membrane material (200) are effectively removed, thereby improving the surface state of the flexible membrane material (200), and enhancing the use performance of the flexible membrane material (200).

Description

Collection equipment, collection methods and detection methods for metal particles on the surface of flexible membrane materials

Technical field

The present invention relates to the technical field of surface detection of flexible membrane materials, and in particular, to a device for collecting metal particles on the surface of flexible membrane materials, a method of collecting metal particles on the surface of flexible membrane materials, and a method of detecting metal particles on the surface of flexible membrane materials.

Background technique

With the continuous popularity of flexible membrane materials, the performance requirements for flexible membrane materials in production are also getting higher and higher. As for the performance of flexible membrane materials, it is mainly reflected in the two aspects of the membrane material's own performance and surface state. The performance of the membrane material directly affects the use of the membrane material, and the surface state of the membrane material also has an important impact on the use of the membrane material. For example, in the preparation process of lithium batteries, flexible membrane materials such as copper foil, aluminum foil separators and current collectors are used. During the production and use of these flexible membrane materials, it is inevitable that some metal particles will adhere to their surfaces. At this time, when the film material with metal particles attached to the surface is applied to the assembly of the battery, it will cause greater harm to the battery. For example, metal particles pierce the separator and cause a short circuit, and the attachment of metal particles causes uneven distribution of active materials and affects battery cycle performance. Therefore, removing metal particles on the surface of flexible membrane materials is of great significance to improving the performance of flexible membrane materials.

Contents of the invention

Based on this, it is necessary to provide a device that can effectively collect metal particles on the surface of flexible membrane materials, as well as a collection method and a method for detecting metal particles.

In order to solve the above technical problems, the technical solution of an embodiment of the present invention is:

A collection equipment for metal particles on the surface of flexible film materials, including a frame, a unwinding roller, a transmission device, a magnetic component, and a winding roller; the transmission device is connected to the frame, and a transmission channel is provided on the transmission device , the transmission channel has a feed end and a discharge end; the unwinding roller and the rewinding roller are respectively connected to the frame, and the unwinding roller is located at the feeding end of the transmission channel for use When unwinding the flexible film material, the winding roller is located at the discharge end of the transmission channel for winding up the flexible film material; the magnetic component is connected to the frame, and the magnetic component is located on the transmission channel. At least one side of the channel is used to adsorb metal particles on the surface of the flexible membrane material.

In one embodiment, there are a plurality of magnetic members, and the plurality of magnetic members are respectively disposed on both sides of the transmission channel.

In one embodiment, the magnetic component is formed by splicing multiple magnetic blocks in sequence.

In one embodiment, a guide member is provided on the frame, and the magnetic member is movably connected to the guide member for adjusting the distance between the magnetic member and the transmission channel, thereby adjusting the The distance between the magnetic part and the surface of the flexible membrane.

In one embodiment, the transmission device includes a guide roller connected to the frame for guiding the flexible film material through the transmission channel.

In one embodiment, the device for collecting metal particles on the surface of the flexible film material further includes a pressure roller, the pressure roller is movably connected to the frame, and the distance between the pressure roller and the winding roller can be Adjust, and the pressure roller can move to abut the flexible film material on the winding roller.

In one embodiment, the device for collecting metal particles on the surface of the flexible film material further includes a tension roller, and the tension roller is connected to the frame for adjusting the tension of the flexible film material.

A method for collecting metal particles on the surface of flexible membrane materials, using the device for collecting metal particles on the surface of flexible membrane materials described in any of the above embodiments, the collection method includes the following steps:

Install the roll-shaped flexible film material on the unwinding roller for unwinding, and transfer the flexible film material to the rewinding roller through the transmission device for rewinding;

The metal particles on the surface of the flexible film material are absorbed by the magnetic component.

In one embodiment, the transmission speed of the flexible film material is controlled to be 10 m/min to 100 m/min.

In one embodiment, the distance between the magnetic component and the surface of the flexible film material is controlled to be 0 mm to 20 mm.

In one embodiment, the tension of the flexible film material is controlled to be 3N-100N.

A method for detecting metal particles on the surface of flexible membrane materials, including the following steps:

Use the described collection method to collect metal particles on the surface of the flexible membrane material;

Transfer the metal particles adsorbed by the magnetic piece to the tape;

Metal particles on the tape were detected.

In one embodiment, the metal particles on the tape are detected by polarized light.

In the above-mentioned collection equipment of metal particles on the surface of flexible film materials, the flexible film material is transported mainly through the cooperation of the unwinding roller, the transmission device, the magnetic parts and the winding roller, and the flexible film material is transported through the unwinding roller and the winding roller respectively. Flexible membrane materials are rolled and unrolled. During the transmission process of the flexible membrane material, the metal particles on the surface of the flexible membrane material are adsorbed by magnetic components to collect the metal particles on the surface of the flexible membrane material. At the same time, the metal particles on the surface of the flexible membrane are collected through the above collection equipment, so that the metal particles on the surface of the flexible membrane are effectively removed, thereby improving the surface condition of the flexible membrane and improving the performance of the flexible membrane.

The above-mentioned collection method of metal particles on the surface of flexible membrane materials uses the collection equipment of metal particles on the surface of flexible membrane materials. When collecting metal particles on the surface of flexible membrane materials, the operation method is simple and easy, and does not need to rely on complicated equipment and operations. It can reduce the cost of collecting and removing metal particles on the surface of flexible membrane materials, and improve the efficiency of collecting and removing metal particles on the surface of flexible membrane materials.

The above-mentioned method for detecting metal particles on the surface of a flexible film material mainly collects the metal particles on the surface of the flexible film material to the surface of the magnetic part through the above-mentioned collection method of metal particles on the surface of the flexible film material, and then transfers the metal particles on the surface of the magnetic part to the tape. , and then detect the metal particles on the tape. In the above method for detecting metal particles on the surface of flexible membrane materials, the metal particles transferred to the tape serve as metal particles on the surface of the entire flexible membrane material, which can represent the surface state of the entire flexible membrane material, thereby improving the authenticity and reliability of the detection. .

Furthermore, when detecting metal particles on the surface of flexible membrane materials, the size and quantity of metal particles can be accurately determined by detecting the particles on the tape through polarized light, and more truly reflects the surface state of the flexible membrane material.

Description of drawings

Figure 1 is a schematic structural diagram of a device for collecting metal particles on the surface of a flexible membrane material in an embodiment of the present invention.

Description of markings in the picture:

100. Equipment for collecting metal particles on the surface of flexible membranes; 101. Frame; 102. Unwinding roller; 103. Guide roller; 104. Magnetic parts; 105. Winding roller; 106. Pressure roller; 107. Tension roller; 108. Spare roller; 109. Guide; 200. Flexible membrane material.

Detailed ways

In order to make the above objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, the present invention can be implemented in many other ways different from those described here. Those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply the device or device referred to. Elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

In the present invention, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise specified restrictions. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the invention belongs. The terminology used herein in the description of the invention is for the purpose of describing specific embodiments only and is not intended to limit 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 , one embodiment of the present invention provides a device 100 for collecting metal particles on the surface of a flexible membrane material. The equipment 100 for collecting metal particles on the surface of flexible film materials includes a frame 101, an unwinding roller 102, a transmission device, a magnetic component 104 and a rewinding roller 105; the transmission device is connected to the frame 101, and a transmission channel is provided on the transmission device. The channel has a feed end and a discharge end; the unwinding roller 102 and the winding roller 105 are respectively connected to the frame 101, and the unwinding roller 102 is located at the feeding end of the transmission channel for unwinding the flexible film material 200. The roller 105 is located at the discharge end of the transmission channel for winding up the flexible film material 200; the magnetic component 104 is connected to the frame 101, and the magnetic component 104 is located on at least one side of the transmission channel for adsorbing metal on the surface of the flexible film material 200. Particles. The device 100 for collecting metal particles on the surface of the flexible film material in this embodiment mainly uses the cooperation of the unwinding roller 102, the transmission device, the magnetic component 104 and the winding roller 105. The flexible film material 200 is transported through the transmission device. The roller 102 and the winding roller 105 respectively wind and unwind the flexible film material 200 . During the transportation process of the flexible film material 200 , the metal particles on the surface of the flexible film material 200 are adsorbed by the magnetic member 104 to collect the metal particles on the surface of the flexible film material 200 . At the same time, the metal particles on the surface of the flexible membrane material 200 are collected through the above collection equipment, so that the metal particles on the surface of the flexible membrane material 200 are effectively removed, thereby improving the surface condition of the flexible membrane material 200 and improving the use of the flexible membrane material 200 performance.

It can be understood that when the flexible film material 200 is transported in the transmission channel, the magnetic member 104 is provided on at least one side of the transmission channel to adsorb particles on at least one surface of the flexible film material 200 . In order to improve the adsorption effect of the magnetic components 104 on the particles on the surface of the flexible film, magnetic components 104 are provided on both sides of the transmission channel.

Specifically, there are multiple magnetic members 104, and the multiple magnetic members 104 are respectively disposed on both sides of the transmission channel. Optionally, the number of magnetic components 104 is 2 to 10. For example, the number of magnetic components 104 may be, but is not limited to, 2, 3, 5, 6, 8, etc. In the embodiment shown in FIG. 1 , the number of magnetic members 104 is two, and the two magnetic members 104 are respectively disposed on both sides of the transmission channel. Optionally, the number of magnetic components 104 is an even number, and further optionally, the magnetic components 104 on both sides of the transmission channel are staggered. Further optionally, the magnetic components 104 on both sides of the transmission channel are arranged oppositely one by one.

In a specific example, the magnetic component 104 is reversibly connected to the frame 101 . The metal particles adsorbed on the magnetic part 104 can be easily transferred to the tape by turning the magnetic part 104 over. Optionally, the magnetic component 104 is connected to the rack 101 through snaps (not shown in the figure). The snap connection can facilitate the reversible connection of the magnetic component 104 to the rack 101 . Specifically, the buckle is a stainless steel buckle.

In a specific example, the magnetic member 104 is a permanent magnet or an electromagnet. Optionally, the magnetic component 104 is a magnetic component 104 with a magnetic field strength of 8000GS to 20000GS. Optionally, the magnetic field strength of the magnetic component 104 may be, but is not limited to, 8000GS, 1000GS, 12000GS, 15000GS, 18000GS, etc. Further optionally, the magnetic field strength of the permanent magnet is 8000GS~12000GS. The magnetic field strength of the electromagnet is 8000GS~20000GS.

In a specific example, the magnetic component 104 is composed of multiple magnetic blocks spliced in sequence. Specifically, the magnetic component 104 is composed of multiple magnetic blocks sequentially spliced along its length direction. By splicing multiple magnet blocks into the magnetic component 104, a more uniform magnetic field can be obtained and the dead spots of adsorption can be reduced. Optionally, the number of magnetic blocks is 2 to 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˜0.5m. For example, the length of the magnet block may be, but is not limited to, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm or 0.5 mm, etc. Further optionally, the plurality of magnet blocks in the magnetic component 104 are the same magnet blocks.

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 the distance between the magnetic member 104 and the transmission channel, and thereby adjusting the distance between the magnetic member 104 and the flexible film material. 200 distance between surfaces. Through the arrangement of the guide 109, it is convenient to adjust the position of the magnetic member 104, thereby adjusting the distance between the magnetic member 104 and the surface of the flexible membrane 200, and improving the adsorption effect of the magnetic member 104 on the metal particles on the surface of the flexible membrane 200. Optionally, the guide 109 is a slide rail. At this time, the magnetic component 104 is slidably connected to the guide component 109 . It can be understood that in order to facilitate the installation of the magnetic component 104, a slide block is provided on the slide rail. The slide block can slide on the slide rail. The magnetic component 104 is fixed on the slide block, and the sliding of the slide block drives the magnetic component 104 along the slide rail. Slide movement.

It can be understood that the transmission device includes a guide roller 103, and the guide roller 103 is connected to the frame 101 for guiding the flexible film material 200 through the transmission channel. It can also be understood that the guide roller 103 cooperates with the unwinding roller 102 and the winding roller 105 to form a transmission channel. Further, the number of guide rollers 103 is 1 to 20. For example, the number of guide rollers 103 may be, but is not limited to, 2, 3, 5, 6, 8, 10, 12, 15, 18, etc. Furthermore, there are multiple guide rollers 103 . Through the arrangement of multiple guide rollers 103, the shape of the transmission channel can be flexibly designed, thereby adjusting the transmission direction of the flexible film material 200, and at the same time, the stability of the transmission of the flexible film material 200 can be improved. In the embodiment shown in FIG. 1 , the number of guide rollers 103 is nine, and the flexible film material 200 can be stably transported through the arrangement of nine guide rollers 103 .

In a specific example, the device 100 for collecting metal particles on the surface of flexible film materials also includes a pressure roller 106. The pressure roller 106 is movably connected to the frame 101. The distance between the pressure roller 106 and the winding roller 105 is adjustable, and the pressure The roller 106 can move to abut the flexible film material 200 on the winding roller 105 . The pressure roller 106 is provided on the frame 101. When the flexible film material 200 is rolled up, the air between the layers of the flexible film material 200 on the winding roller 105 can be discharged through the extrusion of the pressure roller 106, making the winding process more efficient. Stable and tight.

In a specific example, the device 100 for collecting metal particles on the surface of the flexible film material also includes a tension roller 107 , which is connected to the frame 101 for adjusting the tension of the flexible film material 200 . Through the arrangement of the tension roller 107, the tension of the flexible film material 200 can be adjusted, so that the flexible film material 200 can be transported and rolled up more smoothly.

In another specific example, the device 100 for collecting metal particles on the surface of flexible film materials also includes a backup roller 108 , which is connected to the frame 101 for replacing the guide roller 103 . When the guide roller 103 is damaged or needs to be replaced periodically, the spare roller 108 is used to replace the guide roller 103 so that the device 100 for collecting metal particles on the surface of the flexible film material can work stably.

It can be understood that in order to reduce the impact of particles produced by the rotation of the unwinding roller 102, the guide roller 103, the pressure roller 106, the tension roller 107 and the winding roller 105 on the collection and detection, the flexible film material 200 can be transported normally while maintaining On the basis of reducing the use of rollers. In addition, in order to reduce the risk of metal particles generated during the operation of the collection equipment, ceramic bearings are selected as the bearings in the equipment. At the same time, protective covers are installed on worn rotating parts to further reduce the impact of particles generated during equipment operation on collection and detection.

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 adsorbed by the magnetic member 104 .

Another embodiment of the present invention provides a method for collecting metal particles on the surface of flexible membrane material 200 . The collection method uses the above-mentioned collection device 100 for metal particles on the surface of flexible film materials. The collection method includes the following steps: install the roll-shaped flexible film material 200 on the unwinding roller 102 to unwind, and transfer the flexible film material 200 to the unwinding roller 102 through a transmission device. The winding roller 105 winds up; the magnetic part 104 absorbs the metal particles on the surface of the flexible film material 200 . When collecting metal particles on the surface of the flexible membrane material 200, this collection method is simple and easy to operate and does not need to rely on complicated equipment and operations. It can reduce the cost of collecting and removing metal particles on the surface of the flexible membrane material 200 and improve flexibility. The efficiency of collecting and removing metal particles on the surface of the membrane material 200.

Optionally, in the method of collecting metal particles on the surface of the flexible membrane 200, the transmission speed of the flexible membrane 200 is controlled to be 10 m/min to 100 m/min. The smaller the transmission speed of the flexible film material 200 is, the longer the interaction time between the magnetic component 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 the production plan, order arrangement, etc. For example, the transmission speed of the flexible membrane material 200 is controlled to be 10m/min, 30m/min, 50m/min, 60m/min, 80m/min or 90m/min, etc.

Optionally, in the method of collecting metal particles on the surface of the flexible film material 200, the distance between the magnetic component 104 and the surface of the flexible film material 200 is controlled to be 0 mm to 20 mm. The magnetic field strength of the magnetic component 104 gradually weakens from near to far. The smaller the distance between the magnetic component 104 and the surface of the flexible membrane material 200, the greater the interaction strength between the magnetic component 104 and the particles on the surface of the flexible membrane material 200, and the adsorption force will be greater. The better. In the actual production process, the distance between the magnetic part 104 and the surface of the flexible membrane 200 mainly depends on the flatness of the flexible membrane 200. The distance must be small and the magnetic part 104 must not touch the surface of the flexible membrane 200. To prevent scratches on the surface of the flexible film material 200, for example, control the distance between the magnetic component 104 and the surface of the flexible film material 200 to be 1 mm, 5 mm, 8 mm, 10 mm, 15 mm or 18 mm, etc. Preferably, the distance between the control magnetic component 104 and the surface of the flexible film material 200 is 2 mm to 5 mm.

Optionally, in the method of collecting metal particles on the surface of the flexible membrane 200, the tension of the flexible membrane 200 is controlled to be 3N to 100N. For example, the tension of the flexible membrane material 200 is controlled to be 5N, 10N, 20N, 50N or 80N, etc.

It can be understood that before installing the roll-shaped flexible film material 200 on the unwinding roller 102, the following steps are also included: cleaning the collection device 100 of metal particles on the surface of the flexible film material, specifically, cleaning the rollers and magnetic parts of the collection device. 104 and so on for cleaning. More specifically, alcohol, lint-free cloth, tape, etc. are used to clean the rollers, magnetic parts 104, etc. of the collection device.

Another embodiment of the present invention provides a method for detecting metal particles on the surface of flexible membrane material 200 . The method for detecting metal particles on the surface of the flexible film material 200 includes the following steps: using the above collection method to collect the metal particles on the surface of the flexible film material 200; transferring the metal particles adsorbed by the magnetic member 104 to the tape; and detecting the metal particles on the tape. . In this detection method, the particles on the surface of the flexible film material 200 are mainly collected to the surface of the magnetic part 104 through the above-mentioned method of collecting metal particles on the surface of the flexible film material 200, and then the metal particles on the surface of the magnetic part 104 are transferred to the tape, and then the Metal particles on the tape are detected. In the above method for detecting metal particles on the surface of the flexible film material 200, the metal particles transferred to the tape serve as metal particles on the surface of the entire flexible film material 200, which can represent the surface state of the entire flexible film material 200, thereby improving the authenticity of the detection. and reliability. At the same time, the above-mentioned method for detecting metal particles on the surface of the flexible film material 200 has a wide range of applications, and can obtain relatively accurate test results for both transparent and opaque flexible film materials 200 .

Regarding the detection method of metal particles on the surface of the flexible membrane material 200, the traditional method mainly uses the scanning electron microscope method and the CCD surface defect detection method. Specifically, the scanning electron microscope method is to cut the test object from the roll to make a 3mm × 5mm electron microscope sample, place it on the test sample stage, and use a narrow high-energy electron beam focused by the electron microscope to scan the sample. It interacts with matter to stimulate various physical information. This information is collected, amplified, and re-imaged to characterize the microscopic morphology of the matter. The electron microscope system is equipped with the EDS elemental analysis function to analyze the elemental composition of the microscopic surface matter. Whether the surface contains metal particles. This scanning electron microscopy method requires expensive electron microscopy equipment, has a small sampling area, has great contingency, and is difficult to reflect the true surface state of the entire flexible membrane material. The CCD surface defect detection method is aimed at film materials with high light transmittance. The system adopts the transmission lighting detection method for detection, that is, the light source is below the film and the camera captures images above the film. When the production line is running, the system collects the production line operating status information in real time through the encoder and starts detection. The system uses the images collected by the camera to process defects through SIMV image analysis software. Because the defects and normal product images are obviously different on the gray scale. Differences allow the system to detect defects and determine the size, location, type and other information of the defects through further calculation and analysis. This CCD surface defect detection method has a narrow application range. The main inspection object is light-transmitting materials, and the application range is narrow. It cannot be used for opaque materials such as copper foil and aluminum foil.

In a specific example, the metal particles on the tape are detected by polarized light. When detecting metal particles on the surface of the flexible membrane material 200 , by detecting the particles on the tape through polarized light, the size and quantity of the metal particles can be accurately determined, and the surface state of the flexible membrane material 200 can be more truly reflected. Specifically, the physical properties of the metal surface determine that light cannot enter the metal material, and it will reflect the incident light 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 material, its vibration direction will change (the main reason is that the light enters the interior of the non-metallic material) and passes through the non-metallic material. The reflected light that comes out after entering the non-metallic material is no longer polarized, and its direction will also change. Using this principle, polarized light can enter the camera through polarizers with the same direction. When the two polarizers are in a cross position (one of them is rotated 90 degrees), the polarized reflected light cannot pass through the second polarizer. The metal particles are black in the cross state, so as to determine whether they are metal particles, as well as their size and quantity, and more truly reflect the surface state of the flexible membrane material 200 . Optionally, when detecting particles on the tape through polarized light, use a JOMES polarized light testing instrument to detect the particles on the tape.

Optionally, as a selection example of the tape, the tape includes Mylar tape, transparent tape, double-sided tape or PP tape. In a specific example, the tape is Mylar tape. During the inspection, the Mylar tape is cut into a square with a width of 5 mm × 5 mm, and the particles are transferred by moving 4 cm each time, and the adhesion is repeated three times at each position.

In a specific example, when the particles adsorbed by the magnetic component 104 are transferred to the tape, the tape is used to transfer the metal particles adsorbed by the magnetic component 104 in a sticky manner. Among them, the requirements for particle transfer meet the following two requirements: the number of the second sticking is less than 30% of the sum of the previous two times, and the number of the last sticking is less than 10% of the sum of all previous times. The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

The above-mentioned embodiments only express several implementation modes of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be determined by the appended claims, and the description and drawings can be used to interpret the content of the claims.

Claims

A collection equipment for metal particles on the surface of flexible film materials, which is characterized in that it includes a frame, an unwinding roller, a transmission device, a magnetic part, and a winding roller; the transmission device is connected to the frame, and the transmission device A transmission channel is provided, and the transmission channel has a feed end and a discharge end; the unwinding roller and the rewinding roller are respectively connected to the frame, and the unwinding roller is located at the inlet of the transmission channel. The material end is used to unwind the flexible film material, and the winding roller is located at the discharge end of the transmission channel for winding the flexible film material; the magnetic component is connected to the frame, and the magnetic component Located on at least one side of the transmission channel for adsorbing metal particles on the surface of the flexible membrane material.
The device for collecting metal particles on the surface of flexible film materials according to claim 1, characterized in that there are multiple magnetic parts, and the plurality of magnetic parts are respectively provided on both sides of the transmission channel.
The device for collecting metal particles on the surface of flexible film materials according to claim 1, wherein the magnetic component is composed of a plurality of magnetic blocks spliced in sequence.
The device for collecting metal particles on the surface of flexible film materials according to claim 1, characterized in that a guide member is provided on the frame, and the magnetic member is movably connected to the guide member for adjusting the magnetic member. and the transmission channel, thereby adjusting the distance between the magnetic component and the surface of the flexible film material.
The device for collecting metal particles on the surface of flexible film materials according to claim 1, characterized in that the transmission device includes a guide roller, and the guide roller is connected to the frame for guiding the flexible film material through the transmission channel.
The device for collecting metal particles on the surface of flexible film materials according to any one of claims 1 to 5, characterized in that it also includes a pressure roller, the pressure roller is movably connected to the frame, and the pressure roller is connected to the The distance between the winding rollers is adjustable, and the pressure roller can move to abut the flexible film material on the winding rollers; and/or,

It also includes a tension roller connected to the frame for adjusting the tension of the flexible film material.
A method for collecting metal particles on the surface of flexible membrane materials, characterized in that the device for collecting metal particles on the surface of flexible membrane materials according to any one of claims 1 to 6 is used, and the collection method includes the following steps:

Install the roll-shaped flexible film material on the unwinding roller for unwinding, and transfer the flexible film material to the rewinding roller through the transmission device for rewinding;

The metal particles on the surface of the flexible film material are absorbed by the magnetic component.
The method for collecting metal particles on the surface of flexible membrane materials according to claim 7, characterized in that the transmission speed of the flexible membrane material is controlled to be 10m/min～100m/min; and/or,

Control the distance between the magnetic component and the surface of the flexible film material to be 0 mm to 20 mm; and/or,

Control the tension of the flexible membrane material from 3N to 100N.
A method for detecting metal particles on the surface of flexible membrane materials, which is characterized by including the following steps:

Using the collection method of claim 8 to collect metal particles on the surface of the flexible membrane material;

Transfer the metal particles adsorbed by the magnetic piece to the tape;

Metal particles on the tape were detected.
The method for detecting metal particles on the surface of flexible film materials according to claim 9, characterized in that the metal particles on the tape are detected through polarized light.