Foil surface cleaning system

Abstract

The utility model discloses a foil surface cleaning system which comprises a differential fiber roller and a corona cleaning mechanism. The differential fiber roller comprises a roller core and a fiber layer, the fiber layer wraps the outer side of the roller core to form the surface of the differential fiber roller, the roller core is connected with a power device capable of enabling the roller core to rotate, and the differential fiber roller is used for conveying and cleaning the surface of the foil through fibers; the corona cleaning mechanism comprises a corona roller, the corona roller is used for conveying and conducting corona impact treatment on the foil, and the corona roller is arranged behind the differential fiber roller in the foil conveying direction; the differential fiber roller comprises a concave-convex surface differential fiber roller and a smooth differential fiber roller which are sequentially arranged front and back in the foil conveying direction; the concave-convex surface differential fiber roller is provided with convex structures with alternate surfaces, so that a concave-convex surface is formed; the smooth differential fiber roller has a smooth surface. The cleaning effect and efficiency of the surface of the foil can be improved, and the production stability of products is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery current collector preparation technical field, concretely relates to a foil surface cleaning system. BACKGROUND

[0002] In the aluminum foil rolling process, it is necessary to spray rolling oil on the surface of aluminum material, so as to ensure the lubrication and protection during the cleaning of aluminum powder. After forming an oil film on the surface of the aluminum foil, the thickness uniformity and the consistency of the foil can be ensured by adjusting the foil version and controlling the temperature, and the stability in the subsequent process can be ensured. However, when using aluminum foil to prepare carbon-coated current collector, carbon coating operation needs to be performed on the surface of the aluminum foil, so the oil stains on the surface of the foil need to be treated first.

[0003] Due to the influence of impurities in the spraying rolling oil or uneven spraying distribution, and the combination of impurities with a small amount of aluminum foil surface at high temperature, the thickness of the oil film in some areas may be different, which may eventually lead to frequent appearance abnormalities during the carbon coating process, resulting in uneven coating, affecting the electrical performance and thickness uniformity of the foil, and reducing the consistency of the battery module and the production efficiency.

[0004] The existing foil surface oil stain treatment methods include baking and corona discharge. Corona discharge machines and baking facilities can apply uniform surface treatment to the surface of the foil. However, due to the high oil content in the local area during the rolling process, the oil stains cannot be effectively removed during the corona discharge and baking processes, and the product quality may be affected by the point-like or local area oil stains that may cause coating leakage during the coating process. INVENTION CONTENTS

[0005] The utility model aims at the above problems, and provides a foil surface cleaning system, which effectively treats the foil by combining fiber and corona discharge impact.

[0006] To achieve the above-mentioned purpose, the technical scheme provided by the utility model is as follows:

[0007] A foil surface cleaning system, comprising a differential speed fiber roller and a corona discharge cleaning mechanism. The differential speed fiber roller comprises a roller core and a fiber layer, the fiber layer is wrapped on the outside of the roller core to form the surface of the differential speed fiber roller, the roller core is connected to a power device that can rotate, and the differential speed fiber roller is used for conveying and cleaning the surface of the foil by fiber. The corona discharge cleaning mechanism comprises a corona discharge roller, the corona discharge roller is used for conveying and performing corona discharge impact treatment on the foil, and the corona discharge roller is arranged behind the differential speed fiber roller in the conveying direction of the foil.

[0008] The differential fiber roller comprises a concave-convex differential fiber roller and a smooth differential fiber roller arranged in sequence in the foil conveying direction.

[0009] To optimize the above technical solution, the specific measures taken also include:

[0010] The differential fiber roller is composed of two groups of differential fiber rollers arranged on both sides of the foil for cleaning the surfaces of the foil, each group of differential fiber rollers comprising a concave-convex differential fiber roller and a smooth differential fiber roller.

[0011] The protruding structure is an annular protrusion surrounding the roller core, and a plurality of annular protrusions are uniformly spaced.

[0012] Further, the width of the annular protrusion is greater than the spacing between two adjacent annular protrusions.

[0013] Further, the concave-convex differential fiber roller comprises a first concave-convex differential fiber roller and a second concave-convex differential fiber roller arranged in sequence, the first concave-convex differential fiber roller is provided with a first annular protrusion surrounding the roller core, the second concave-convex differential fiber roller is provided with a second annular protrusion surrounding the roller core, and the positions of the first annular protrusion and the second annular protrusion on the foil conveying surface are staggered.

[0014] As a preferred solution, a cladding sleeve with an annular protrusion is arranged between the surface of the roller core and the fiber layer.

[0015] The fiber layer is fixed by adhesion.

[0016] As a preferred solution, the differential fiber roller is provided with a heating device in the roller core for heating the fiber layer.

[0017] A plurality of over-rollers for assisting in transferring the foil are arranged around the differential fiber roller and the corona cleaning mechanism.

[0018] The corona cleaning mechanism further comprises a corona protective cover arranged outside the corona roller, and the corona protective cover and the corona roller have a gap for the foil to pass through.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] The utility model combines fiber and corona impact to effectively clean the foil, effectively removes dust, oil film and other impurities on the surface of the foil, ensures that the surface of the foil is relatively clean when entering the corona mechanism, uniformly modifies the surface of the foil by corona impact, and reduces the abnormal appearance problem of the current collector caused by oil film and dust.

[0021] Especially for the problem that the local oil stain is difficult to remove, the utility model discloses a different differential fiber roller is arranged to strengthen treatment, and deep and sufficient cleaning effect is achieved.

[0022] The utility model discloses be suitable for workshop operation, can guarantee processing efficiency, improve the quality of the carbon coated current collector product produced by the foil. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The utility model discloses a foil surface cleaning system's structure schematic diagram.

[0024] Figure 2 The utility model discloses a concave-convex surface differential fiber roller's structure schematic diagram.

[0025] Figure 3 The utility model discloses a concave-convex surface differential fiber roller's cross section schematic diagram.

[0026] In the drawing: 1-differential fiber roller, 2-corona cleaning mechanism, 3-roller core, 4-fiber layer, 5-concave-convex surface differential fiber roller, 6-smooth differential fiber roller, 7-ring convex, 8-first concave-convex surface differential fiber roller, 9-second concave-convex surface differential fiber roller, 10-corona protection cover, 11-pass roller, 12-interlayer cover. DETAILED DESCRIPTION

[0027] The above content of the utility model will be further explained in the form of embodiment, but this should not be understood as the range of the above subject matter of the utility model is limited to the following embodiment, and the technology realized based on the above content of the utility model belongs to the range of the utility model.

[0028] In the description of the utility model, it also needs to be explained that:

[0029] The orientation or positional relationship in it is the relationship shown based on the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or component must have a particular orientation, a particular orientation structure and operation, so it cannot be understood as the limitation of the utility model.

[0030] The utility model provides a kind of foil surface cleaning system, as shown in Figure 1 It includes differential fiber roller 1 and corona cleaning mechanism 2;Differential fiber roller 1 includes roller core 3 and fiber layer 4, fiber layer 4 is wrapped in the outside of roller core 3, forms the surface of differential fiber roller 1, and roller core 3 is connected to the power device that can make it rotate, and differential fiber roller 1 is used to transmit and clean the foil surface by fiber;Corona cleaning mechanism 2 includes corona roller, and the corona roller is used to transmit and carry out corona impact treatment to foil, and the corona roller is arranged behind differential fiber roller 1 in the direction of foil transmission.

[0031] The power device in the utility model can adopt the existing conventional design, and no longer be described repeatedly; the utility model discloses through the rotation of the driving roller core 3 and the adjustment of its rotating speed, makes the speed of differential fiber roller 1 and the foil material belt material running speed different, makes the surface of fiber layer 4 and the foil surface form the speed difference, thereby more effective cleaning of foil.

[0032] Among them, the fiber material of fiber layer 4 can be selected from polyamide, polyester, polypropylene, polyacrylonitrile, etc., and the length of the fiber can be 50-1000 μm; the material of roller core 3 can be stainless steel, carbon steel, etc.; the material and size of the utility model are not limited to the above.

[0033] The utility model discloses the combination of fiber and corona impact, forms effective processing to foil, especially for the problem that local oil stain is too heavy to remove, can be treated by setting different differential fiber roller 1:

[0034] Differential fiber roller 1 includes concave-convex surface differential fiber roller 5 and smooth differential fiber roller 6 arranged in front and back in the foil conveying direction; concave-convex surface differential fiber roller 5 has the convex structure of surface phase, forms concave-convex surface; smooth differential fiber roller 6 has smooth surface.

[0035] Among them, the concave-convex surface of concave-convex surface differential fiber roller 5 can form the cleaning of different force to the foil surface, compared with the smooth surface of smooth differential fiber roller 6, the removal effect of key oil spot is better.

[0036] In some embodiments, the concave-convex surface of concave-convex surface differential fiber roller 5 can be composed of concave-convex blocks; but considering the installation convenience of fiber layer 4 and the processing of concave-convex surface differential fiber roller 5, therefore, in the preferred embodiment, the concave-convex surface of concave-convex surface differential fiber roller 5 is formed by the following structure:

[0037] The convex structure is annular convex 7 around roller core 3, and a plurality of annular convex 7 are evenly spaced; the width of annular convex 7 is greater than the spacing of two adjacent annular convex 7.

[0038] Considering that the foil belt material is limited when contacting the contact surface of differential fiber roller 1 and the characteristics of concave-convex structure, the concave-convex surface differential fiber roller 5 provided with annular convex 7 cannot completely cover the surface of foil belt material, and the treatment of key oil spot is not sufficient, therefore, the first concave-convex surface differential fiber roller 8 and the second concave-convex surface differential fiber roller 9 are preferably arranged in front and back to optimize the treatment of key oil spot, as shown in Figure 2 .

[0039] The first concave-convex surface differential fiber roller 8 is provided with the first annular convex around its roller core 3, and the second concave-convex surface differential fiber roller 9 is provided with the second annular convex around its roller core 3, and the positions of the first annular convex and the second annular convex on the foil transmission surface are correspondingly staggered.

[0040] When the foil conveyor belt passes the first concave-convex differential fiber roller 8, the area in contact with the protrusions is cleaned in a focused manner. When the foil conveyor belt passes the second concave-convex differential fiber roller 9, the areas that have not been treated are cleaned in a focused manner through staggered protrusions.

[0041] The fiber layer 4 of the smooth differential fiber roller 6 can be fixed to the surface of its roller core 3 by an adhesive material; the uneven differential fiber roller 5 can be fixed by a sandwich sleeve 12 with annular protrusions 7 between the surface of the roller core 3 and the fiber layer 4, such as Figure 3 As shown, the fiber layer 4 is adhered and fixed to the surface of the jacket 12 with annular protrusions 7, or the core 3 of the differential fiber roller 5 with concave and convex surfaces is directly processed into a structure with annular protrusions 7. The material of the jacket 12 with annular protrusions 7 can be selected according to ease of processing and use, such as high molecular polymer materials.

[0042] After being treated by the uneven differential fiber roller 5, a significant amount of oil has been removed from the foil surface. It then undergoes a thorough cleaning by the smooth differential fiber roller 6, achieving a deep and complete cleaning effect. Next, it is sent to the corona cleaning mechanism 2 for corona impact treatment. The corona impact uniformly modifies the foil surface, ensuring product quality and reducing abnormalities in the current collector coating caused by oil film and dust. This treatment provides better cleaning results than current cleaning methods used alone or in simple combinations, and is suitable for workshop operations, ensuring processing efficiency.

[0043] The differential fiber roller 1 of this utility model consists of two sets of differential fiber rollers 1 disposed on both sides of the foil material for cleaning the surfaces of both sides of the foil material. Each set of differential fiber rollers 1 includes a concave-convex differential fiber roller 5 and a smooth differential fiber roller 6.

[0044] like Figure 1 As shown, the foil includes two sides, A and B. The preferred arrangement of the differential fiber rollers 1 is as follows: the first concave-convex differential fiber roller 8 and the second concave-convex differential fiber roller 9 on side A of the foil, the first concave-convex differential fiber roller 8 and the second concave-convex differential fiber roller 9 on side B of the foil, the smooth differential fiber roller 6 on side A of the foil, and the smooth differential fiber roller 6 on side B of the foil.

[0045] In some preferred embodiments, the roller core 3 of the differential fiber roller 1 is also provided with a heating device for heating the fiber layer 4. The increase in temperature has a better auxiliary effect on the removal of oil stains; the heating temperature is preferably 30 to 50°C.

[0046] In some embodiments, the corona cleaning mechanism 2 further includes a corona protection cover 10 disposed outside the corona roller, with a gap between the corona protection cover 10 and the corona roller allowing foil to pass through, and the corona protection cover 10 can protect against corona impacts on the work line.

[0047] The differential fiber roller 1 and the corona cleaning mechanism 2 are further provided with a plurality of over rollers 11 for assisting in transferring the foil, wherein the position setting and the number of the over rollers 11 can be set according to the requirement, and details are not described herein.

[0048] The utility model discloses can improve the cleaning effect and efficiency of foil surface, guarantee the production stability of product, convenient and fast operation.

[0049] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, and any skilled person in the art, without departing from the technical scheme range of the utility model, according to the technical essence of the utility model, any simple modification, equivalent replacement and improvement of the above embodiment, etc. still belong to the protection range of the technical scheme of the utility model.

Claims

1. A foil surface cleaning system characterized by: The differential fiber roller comprises a roller core and a fiber layer, the fiber layer is wrapped outside the roller core to form the surface of the differential fiber roller, the roller core is connected to a power device capable of rotating, and the differential fiber roller is used to convey and clean the foil surface through fibers. The differential fiber roller comprises a concave-convex surface differential fiber roller and a smooth differential fiber roller arranged in sequence in the foil conveying direction; the concave-convex surface differential fiber roller has a convex structure on the surface to form a concave-convex surface; and the smooth differential fiber roller has a smooth surface.

2. The foil surface cleaning system of claim 1, wherein: The differential fiber roller is composed of two groups of differential fiber rollers arranged on both sides of the foil for cleaning the surfaces of both sides of the foil, each group of differential fiber rollers comprises a concave-convex surface differential fiber roller and a smooth differential fiber roller.

3. The foil surface cleaning system of claim 1, wherein: The convex structure is an annular convex structure surrounding the roller core, and a plurality of annular convex structures are uniformly arranged.

4. The foil surface cleaning system of claim 3, wherein: The width of the annular convex structure is greater than the distance between two adjacent annular convex structures.

5. The foil surface cleaning system of claim 3, wherein: The concave-convex surface differential fiber roller comprises a first concave-convex surface differential fiber roller and a second concave-convex surface differential fiber roller arranged in sequence, the first concave-convex surface differential fiber roller is provided with a first annular convex structure surrounding the roller core, the second concave-convex surface differential fiber roller is provided with a second annular convex structure surrounding the roller core, and the positions of the first annular convex structure and the second annular convex structure on the foil conveying surface are staggered.

6. The foil surface cleaning system of claim 1, wherein: A clamping layer sleeve with an annular convex structure is arranged between the surface of the roller core and the fiber layer.

7. The foil surface cleaning system of claim 1, wherein: The fiber layer is fixed by adhesion.

8. The foil surface cleaning system of claim 1, wherein: The differential fiber roller is provided with a heating device in the roller core for heating the fiber layer.

9. The foil surface cleaning system of claim 1, wherein: A plurality of over rollers for assisting in conveying the foil are arranged around the differential fiber roller and the corona cleaning mechanism.

10. The foil surface cleaning system of claim 1, wherein: The corona cleaning mechanism further comprises a corona protective cover arranged outside the corona roller, and a gap for allowing the foil to pass between the corona protective cover and the corona roller.

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