A thin-film cleaning device

Abstract

This utility model discloses a film chip removal device, belonging to the technical field of film processing equipment. The device includes two opposing fixed seats, with at least two chip-collecting rollers movably connected between them. The two rollers can move towards or away from each other to press or loosen the film. It also includes a chip removal device, which includes an exhaust pipe mounted on the fixed seats. The exhaust pipe's outlet is connected to a fan, and its inlet is connected to a suction pipe via an airflow channel located inside the fixed seats. The suction pipe is fixed between the two fixed seats, and its side wall has a suction port with an arc-shaped plate installed on the inner side wall of the fixed seats. This utility model, through the combined use of the chip-collecting rollers and the chip removal device, can effectively remove debris from the film surface, improving film processing quality. Furthermore, its reasonable structural design results in excellent chip removal performance.

Description

Technical Field

[0001] This invention relates to the field of thin film processing equipment, and more specifically to a thin film debris removal device. Background Technology

[0002] During the production and processing of thin films, especially in steps such as slitting and cutting, a large amount of debris is often generated. If this debris is not removed promptly and effectively, it will adversely affect subsequent processes and even lead to a decline in product quality. Particularly in the separator production process, high-speed winding equipment combined with a cutting process is typically used to cut continuous membrane materials into segments to meet the assembly requirements of batteries of different specifications. However, traditional cutting processes rely on the downward pressure of a cutting blade to cut the separator. Due to the characteristics of the blade and long-term wear, fine membrane debris is easily generated on the cut surface during the cutting process. If these residual membrane debris are not removed in time, they may adhere to the separator surface or mix into the battery interior, causing serious safety hazards such as dendrite growth, local short circuits, and even thermal runaway, directly affecting battery performance and lifespan.

[0003] Currently, film debris removal mainly relies on static adsorption devices or manual cleaning. Manual periodic cleaning requires frequent machine downtime, impacting production efficiency and continuous production needs, and also necessitates additional manpower and cleaning tools, increasing operating costs. For example, CN210450129U discloses a structure to prevent debris entanglement after slitting in a slitting machine. This structure includes a dust collection cylinder and a debris collection cylinder positioned vertically. Multiple rows of suction holes are evenly distributed on the outer walls of both cylinders, and an internal impurity removal mechanism collects dust and debris from the film surface. However, static adsorption devices, due to their fixed position and relatively fixed suction distribution, struggle to fully cover both ends of the film cutting area or the upper and lower surfaces of the film, easily creating cleaning blind spots and resulting in debris residue, affecting cleaning effectiveness. Furthermore, improperly set cleaning cycles can lead to debris accumulation, making timely removal impossible and impacting product quality.

[0004] Therefore, there is an urgent need to develop a film debris removal device that can clean film debris in real time and efficiently, in order to solve the problems existing in the current technology and improve the quality and efficiency of film production and processing. Summary of the Invention

[0005] This invention addresses the shortcomings of existing film debris removal devices by providing a film debris removal device capable of real-time and efficient debris removal.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A film cleaning device includes two opposing fixed seats, with at least two suction rollers movably connected between the two fixed seats. The two suction rollers move towards or away from each other to press or release the film located between the two suction rollers. The device also includes a chip removal device, which includes an exhaust pipe mounted on the fixed seats. The exhaust pipe's outlet is connected to a fan, and the exhaust pipe's inlet is connected to a suction pipe via an airflow channel. The airflow channel is located inside the fixed seats, and the suction pipe is fixed between the two fixed seats. A suction port is provided on the side wall of the suction pipe, and an arc-shaped plate is provided in the opening direction of the suction port. The arc-shaped plate is mounted on the inner side wall of the fixed seats.

[0008] As a further embodiment of this utility model: In order to allow the dust collection roller to move to press or release the film, the dust collection roller and the fixed base are movably connected by a movable connecting mechanism. The movable connecting mechanism includes a mounting plate, which is fixedly mounted on the inner side wall of the fixed base along the film conveying direction. A movable plate is movably connected to the mounting plate by a driving member. A bushing is fixedly connected to the movable plate. The bushing is rotatably connected to the roller head of the dust collection roller, so that the driving member drives the movable plate to move along a direction perpendicular to the film conveying direction, thereby pressing or releasing the film.

[0009] As a further embodiment of this utility model: in order to ensure the effect of suction tube sucking up debris and to prevent the debris suction roller from moving and squeezing the suction tube, the suction tube is installed on the side of the debris suction roller away from the film, and the arc plate is located between the suction tube and the debris suction roller.

[0010] As a further embodiment of this invention: in order to ensure that the debris on both sides of the film can be adsorbed and removed, the debris-adsorbing rollers are configured to be at least two and arranged symmetrically about the plane of the film.

[0011] As a further embodiment of this utility model: in order to ensure the effect of the suction roller rotating when the suction roller presses the film, the bushing is rotatably connected to the suction roller through a bearing.

[0012] As a further embodiment of this invention: in order to allow as many debrises as possible to be sucked into the suction pipe, the two transverse ends of the arc-shaped plate extend towards the direction of the debris-collecting roller as oblique scraper structures, which are used to scrape off the debrises on the debris-collecting roller.

[0013] As a further aspect of this invention: In order to ensure the effectiveness of the chip suction roller in adsorbing debris, the outer periphery of the chip suction roller is covered with an adhesive adsorption layer for adhering debris on the film.

[0014] The beneficial effect of this utility model is that by setting a movable and connectable chip suction roller, it solves the problem that static adsorption devices in the prior art cannot fully cover the film. The chip suction roller can press or release the film as the driving component drives the moving plate, achieving full contact with the film surface. At the same time, after the arc plate contacts the chip suction roller, it can scrape off the debris on the surface of the chip suction roller and discharge the debris in time through the chip removal device, so that the chip suction roller can repeat the chip suction work, improving the sustainability of the chip suction work and ensuring high efficiency of film debris cleaning.

[0015] Furthermore, the cleaning process of this invention can be carried out simultaneously with the film transport and cutting process, which increases the immediacy of film debris cleaning, avoids frequent downtime caused by manual periodic cleaning, improves production efficiency, and prevents excessive debris accumulation due to unreasonable debris cleaning cycle, which in turn affects product quality. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 This utility model Figure 3 A magnified view of the structure at point A in the middle;

[0020] In the figure: 1-fixed seat, 2-chip suction roller, 3-moving connection mechanism, 31-mounting plate, 32-moving plate, 33-driving component, 34-shaft sleeve, 4-chip removal device, 41-exhaust pipe, 42-suction pipe, 421-suction port, 5-arc plate. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] A film cleaning device includes two opposing fixed seats 1, with at least two suction rollers 2 movably connected between the two fixed seats 1. The two suction rollers 2 move towards or away from each other to press or release the film located between the two suction rollers 2. The film cleaning device also includes a chip removal device 4, which includes an exhaust pipe 41 mounted on the fixed seats. The exhaust port of the exhaust pipe 41 is connected to a fan, and the inlet of the exhaust pipe 41 is connected to a suction pipe 42 through an airflow channel. The airflow channel is opened inside the fixed seats 1, and the suction pipe 42 is fixed between the two fixed seats 1. The suction pipe has a suction port 421 on its side wall, and an arc-shaped plate 5 is provided in the opening direction of the suction port 421. The arc-shaped plate 5 is mounted on the inner side wall of the fixed seats 1.

[0023] In this embodiment, the two fixing seats 1 are arranged symmetrically. The fixing seats 1 are made of metal and have sufficient strength and rigidity to stably support the structure of the entire chip removal device. The inner sidewall of the fixing seat 1 is provided with mounting structures for installing other components, such as threaded holes and slots, to facilitate the installation and disassembly of each component.

[0024] The chip suction roller 2 is movably connected to the fixed base 1 via a movable connecting mechanism 3. The movable connecting mechanism 3 includes a mounting plate 31, which is fixedly mounted on the inner side wall of the fixed base 1 along the film conveying direction. A movable plate 32 is movably connected to the mounting plate 31 via a driving member 33. A bushing 34 is fixedly connected to the movable plate 32. The bushing 34 is rotatably connected to the roller head of the chip suction roller 2, so that the driving member 33 drives the movable plate 32 to move along a direction perpendicular to the film conveying direction, thereby causing the chip suction roller 2 to press or release the film.

[0025] The mounting plate 31 is made of high-strength alloy material and is fixed to the inner wall of the fixing base 1 by bolts. The surface of the mounting plate 31 is smooth and flat, which facilitates the smooth movement of the moving plate 32 on it. The driving component 33 can be a linear drive device such as a cylinder, hydraulic cylinder, or electric push rod. In this embodiment, an electric push rod is preferably used as the driving component 33. One end of the electric push rod is fixedly connected to the mounting plate 31, and the other end is connected to the moving plate 32. The movement of the moving plate 32 is achieved by controlling the extension and retraction of the electric push rod.

[0026] The movable plate 32 is made of lightweight, high-strength materials, such as aluminum alloy, and has grooves or rails that mate with the mounting plate 31 to ensure stable and reliable movement of the movable plate 32 on the mounting plate 31. A bushing 34 is fixedly connected to the movable plate 32, and the bushing 34 is rotatably connected to the head of the chip suction roller 2 through bearings, allowing the chip suction roller 2 to rotate freely within the bushing 34 and move as a whole with the movable plate 32.

[0027] The bushing 34 is rotatably connected to the chip suction roller 2 via a bearing. The bearing is a high-precision rolling bearing, capable of withstanding certain radial and axial forces to ensure the stability and reliability of the chip suction roller 2 during high-speed rotation. The inner ring of the bearing is fixedly connected to the roller head of the chip suction roller 2, and the outer ring is fixedly connected to the bushing 34. The bearing selection is determined based on the diameter, speed, and load of the chip suction roller 2.

[0028] At least two chip suction rollers 2 are configured symmetrically about the plane of the film. The outer periphery of each roller is covered with an adhesive layer for adhering to debris. The main body of the roller 2 is made of a metal material, such as stainless steel or aluminum alloy, possessing sufficient strength and rigidity to withstand pressure without deformation. The adhesive layer covering the outer periphery of the roller 2 is made of silicone or other adhesive elastic material with moderate viscosity, effectively adsorbing debris from the film without damaging it. The thickness of the adhesive layer is typically 2-5 mm, adjustable according to actual needs.

[0029] The suction pipe 42 is installed on the side of the dust-collecting roller 2 away from the film, and the arc-shaped plate 5 is located between the suction pipe 42 and the dust-collecting roller 2. The suction pipe 42 is made of metal or engineering plastic material, has sufficient strength and rigidity, and can withstand a certain negative pressure without deformation. The two ends of the suction pipe 42 are fixed between two fixed seats 1, and the side wall of the suction pipe 42 has a suction port 421, which is set towards the dust-collecting roller 2 to facilitate the collection of debris on the dust-collecting roller 2.

[0030] The suction port 421 can be elongated, elliptical, or other shapes, and its width and length are determined according to the size of the dust suction roller 2 and the distribution of the debris. The edge of the suction port 421 can be designed with a smooth transition shape to reduce airflow resistance and improve adsorption efficiency.

[0031] The arc-shaped plate 5 is mounted on the inner wall of the fixed base 1, located between the suction pipe 42 and the chip suction roller 2. The shape of the arc-shaped plate 5 is adapted to the outer circumferential surface of the chip suction roller 2, which can effectively guide the airflow and make it easier for debris to be sucked into the suction port 421. The arc-shaped plate 5 is made of metal or engineering plastic material with a smooth surface to reduce airflow resistance. The two transverse ends of the arc-shaped plate 5 extend towards the chip suction roller 2 as inclined scraper structures to scrape away debris on the chip suction roller 2.

[0032] The angle of the inclined scraper structure is at a certain angle to the tangent of the chip suction roller 2, generally 30-60 degrees, which can effectively scrape off the debris on the chip suction roller 2 without damaging it. The inclined scraper structure can be made of flexible materials, such as rubber or soft plastic, so that it will not wear the sticky adsorption layer of the chip suction roller 2 when it comes into contact with the surface of the chip suction roller 2.

[0033] Exhaust pipes 41 are mounted on fixed bases 1, with one exhaust pipe on each of the two fixed bases 1. A fan is connected to the outlet of the exhaust pipe 41. The fan can be a centrifugal fan, axial fan, or other type of fan, capable of generating sufficient negative pressure to allow airflow to form a complete airflow circulation system through the suction port 421, suction pipe 42, airflow channel, and exhaust pipe 41. The power of the fan is determined based on the scale of the debris removal device and the amount of debris, generally ranging from 0.5 to 2 kilowatts.

[0034] The air inlet of the exhaust pipe 41 is connected to the suction pipe 42 via an airflow channel. The airflow channel is located inside the fixed base 1, and its cross-sectional area should be greater than or equal to that of the suction pipe 42 to ensure unobstructed airflow. The inner wall of the airflow channel is smooth to reduce airflow resistance and improve adsorption efficiency.

[0035] The working principle of the film cleaning device in this embodiment is as follows: During film transport, two suction rollers 2 move towards each other via a movable connecting mechanism 3 to press the film together. The adhesive adsorption layer of the suction rollers 2 contacts the film and adsorbs debris from the film surface. As the suction rollers 2 rotate, the debris is carried above them. At this time, the inclined scraper structure of the arc plate 5 scrapes away the debris from the suction rollers 2. Under the action of gravity and airflow, the debris falls into the suction port 421 and is drawn into the suction pipe 42 by the negative pressure generated by the fan. It is then discharged outside the device through the airflow channel and the exhaust pipe 41. When the film needs to be replaced or maintained, the two suction rollers 2 move away from each other via the movable connecting mechanism 3 to loosen the film, facilitating the operation by the operator.

[0036] In another embodiment, four chip removal rollers 2 are configured, divided into upper and lower groups of two, with the four rollers 2 arranged symmetrically about the plane of the film. The upper group of rollers 2 is responsible for removing debris from the upper surface of the film, while the lower group is responsible for removing debris from the lower surface of the film, thus improving the efficiency and effectiveness of chip removal.

[0037] The diameters of the four chip suction rollers 2 can be the same or different, depending on the actual needs. For example, the diameter of the upper chip suction roller 2 can be larger than that of the lower chip suction roller 2, or vice versa. The length of the chip suction roller 2 should be greater than the width of the film to ensure that it can cover the entire film surface.

[0038] Each chip removal roller 2 is connected to the fixed base 1 via an independent movable connection mechanism 3, allowing independent control of the clamping force and position of each chip removal roller 2 to adapt to films of different thicknesses and materials. Each chip removal roller 2 is equipped with a corresponding suction pipe 42 and arc plate 5, forming an independent chip removal system to improve chip removal efficiency.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A film duster comprising two fixed seats (1) arranged opposite to each other, characterized in that: At least two chip suction rollers (2) are movably connected between the two fixed seats (1). The two chip suction rollers (2) move towards or away from each other to press or loosen the film located between the two chip suction rollers (2). It also includes a chip removal device (4). The chip removal device (4) includes an exhaust pipe (41) installed on the fixed seat. The exhaust port of the exhaust pipe (41) is connected to a fan. The air inlet of the exhaust pipe (41) is connected to a suction pipe (42) through an airflow channel. The airflow channel is opened inside the fixed seat (1). The suction pipe (42) is fixed between the two fixed seats (1). The suction pipe has a suction port (421) on its side wall. The suction port (421) has an arc plate (5) in the opening direction. The arc plate (5) is installed on the inner side wall of the fixed seat (1).

2. The film cleaning device according to claim 1, characterized in that: The chip suction roller (2) and the fixed base (1) are movably connected by a movable connection mechanism (3). The movable connection mechanism (3) includes a mounting plate (31). The mounting plate (31) is fixed on the inner side wall of the fixed base (1) along the film conveying direction. A movable plate (32) is movably connected to the mounting plate (31) through a driving member (33). A bushing (34) is fixedly connected to the movable plate (32). The bushing (34) is rotatably connected to the roller head of the chip suction roller (2), so that the driving member (33) drives the movable plate (32) to move along a direction perpendicular to the film conveying direction, so that the chip suction roller (2) presses or releases the film.

3. The film cleaning device according to claim 1, characterized in that: The suction pipe (42) is installed on the side of the chip suction roller (2) away from the film, and the arc plate (5) is located between the suction pipe (42) and the chip suction roller (2).

4. The film cleaning device according to claim 1, characterized in that: The chip suction rollers (2) are configured in at least two and are arranged symmetrically about the plane of the film.

5. A film cleaning device according to claim 2, characterized in that: The bushing (34) is rotatably connected to the chip suction roller (2) via a bearing.

6. The film cleaning device according to claim 1, characterized in that: The two transverse ends of the arc-shaped plate (5) extend toward the chip suction roller (2) to form an oblique scraper structure, which is used to scrape off the debris on the chip suction roller (2).

7. The film cleaning device according to claim 1, characterized in that: The outer periphery of the chip suction roller (2) is covered with an adhesive adsorption layer for adhering chips.

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