Magnetic bar dust removal mechanism and coating equipment

Abstract

The utility model discloses a magnetic bar dust removal mechanism and coating equipment. The magnetic bar dust removal mechanism comprises cleaning units arranged on a pole piece conveying path and located on the two sides of a pole piece; the cleaning unit comprises a magnetic attraction assembly and a cleaning assembly; the magnetic attraction assembly comprises a protective cover, a magnetic bar and a first driving part, the protective cover is provided with an inner cavity, and the first driving part is used for driving the magnetic bar to enter or leave the inner cavity. Strong magnetic force generated by a magnetic bar in the magnetic attraction assembly can efficiently attract and remove scrap iron impurities on the pole piece, so that the magnetic bar can flexibly enter or leave the inner cavity of the protective cover, and dynamic attraction and cleaning of the surface of the pole piece are achieved. And meanwhile, the cleaning assembly is arranged to further ensure that the surface of the protective cover is clean, and secondary pollution of scrap iron is avoided. According to the design, the cleanliness of the pole piece is improved, the problem of impurities in the battery production process is reduced, the overall performance and safety of the battery are improved, the service life of the battery is prolonged, and potential safety hazards caused by the impurities are reduced.

Description

Technical Field

[0001] The utility model relates to the lithium battery industry, in particular to a magnetic rod dust removal mechanism and coating equipment. Background Art

[0002] In the current lithium battery industry, wet coating is a common technique for producing battery electrodes. During the slurry preparation process, fine impurities such as iron filings may be mixed into the electrode. These impurities are not only difficult to completely remove using traditional filtration systems, but can also penetrate the filter during the coating process and ultimately deposit on the electrode surface. The presence of metallic impurities such as iron filings poses a significant threat to battery performance and safety. They not only shorten the battery lifespan but can also cause dangerous conditions such as short circuits, overheating, and even fires during battery charging and discharging. Therefore, a technology is needed to effectively remove iron filings from the electrode surface. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a magnetic rod dust removal mechanism and a coating device which can effectively remove iron filings and impurities on pole pieces.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A magnetic bar dust removal mechanism, comprising:

[0006] Cleaning units are provided on the electrode conveying path and on both sides of the electrode;

[0007] The cleaning unit includes a magnetic attraction component and a cleaning component;

[0008] The magnetic attraction assembly includes a shield, a magnetic rod, and a first driving member. The shield has an inner cavity. The first driving member is in transmission connection with the magnetic rod and is used to drive the magnetic rod to enter or leave the inner cavity.

[0009] When the magnetic bar enters the inner cavity, the magnetic force generated by the magnetic bar can absorb the iron filings on the pole piece through the shield, thereby absorbing the iron filings on the pole piece onto the shield;

[0010] The cleaning assembly is arranged on the shield. When the magnetic rod leaves the inner cavity, the cleaning assembly can be driven by a second driving member to move along the extension direction of the shield and clean the iron filings on the shield.

[0011] Furthermore, the cleaning assembly has a cleaning port corresponding to the shape of the shield, a scraping portion located in the cleaning port, and a negative pressure chamber communicated with the cleaning port; and

[0012] The dust removal box located below the cleaning assembly is used to receive iron filings dropped after cleaning by the cleaning assembly.

[0013] Furthermore, the shield has a first adsorption surface perpendicular to the pole piece and a second adsorption surface parallel to the pole piece;

[0014] The scraping part includes a first brush and a second brush arranged along the circumference of the cleaning port, and a scraper located in the cleaning port;

[0015] The first brush and scraper are used to clean the iron filings adsorbed by the first adsorption surface, and the second brush is used to clean the iron filings adsorbed by the second adsorption surface.

[0016] Furthermore, the scraper is movably connected to the cleaning assembly via a connecting shaft, and an elastic member is provided on the connecting shaft for abutting against the scraper and the cleaning assembly.

[0017] Furthermore, it also includes a fixing plate and a mounting seat;

[0018] The first driving member, the mounting seat and the fixing plate are fixedly connected;

[0019] The shield is fixedly connected to the mounting seat;

[0020] The output end of the first driving member is connected to the magnetic rod and can be used to drive the magnetic rod to approach or move away from the shield.

[0021] Furthermore, a connecting block is fixedly mounted on the end of the magnetic bar, and the output end of the first driving member is connected to the magnetic bar via the connecting block;

[0022] The fixing block is transmission-connected to the mounting seat via a third driving member.

[0023] Furthermore, the mounting seat is provided with a support arm facing the cleaning assembly, and a buffer pad is provided on the support arm on a side facing the cleaning assembly.

[0024] Furthermore, the cleaning units located on both sides of the pole piece are relatively staggered.

[0025] Furthermore, the magnetic bar is a permanent magnet.

[0026] A coating device, comprising the above-mentioned dust removal mechanism.

[0027] The beneficial effects of the utility model are:

[0028] The magnetic rod dust removal mechanism and coating equipment of the present invention, through a cleaning unit provided on the pole piece transmission path, utilizes the strong magnetic force generated by the magnetic rod in the magnetic suction assembly to efficiently adsorb and remove iron filings and impurities on the pole piece, allowing the magnetic rod to flexibly enter or exit the inner cavity of the shield, achieving dynamic adsorption and cleaning of the pole piece surface. At the same time, the provision of the cleaning assembly further ensures the cleanliness of the shield surface and avoids secondary contamination by iron filings. This design not only improves the cleanliness of the pole piece and reduces impurity problems in the battery production process, but also helps to improve the overall performance and safety of the battery, extend the battery life, and reduce safety hazards caused by impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0031] Figure 2 yes Figure 1 A magnified schematic diagram of point A in the middle;

[0032] Figure 3 This is a partial structural diagram of the mounting base of the utility model;

[0033] Figure 4 It is a cross-sectional schematic diagram of the magnetic rod and the protective cover of the utility model;

[0034] Figure 5 This is an exploded diagram of the cleaning components.

[0035] in,

[0036] 1. Cleaning unit;

[0037] 11. Magnetic attraction assembly; 111. Protective cover; 1111. First attraction surface; 1112. Second attraction surface; 112. Magnetic rod; 113. First driving member; 114. Connecting block; 115. Third driving member;

[0038] 12. Cleaning assembly; 121. Cleaning port; 122. Scraping portion; 1221. First brush; 1222. Second brush; 1223. Scraper; 1224. Elastic member; 123. Negative pressure chamber;

[0039] 13. Dust removal box;

[0040] 14. Second driving member;

[0041] 2. Fixing plate; 21. Mounting seat; 211. Support arm; 212. Buffer pad. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the present invention can be combined interactively without conflicting with each other.

[0043] The utility model discloses a magnetic rod dust removal mechanism for removing small iron filings and impurities on pole pieces.

[0044] Reference Figure 1-5 , a magnetic rod dust removal mechanism includes: a cleaning unit 1 arranged on the pole piece transmission path and located on both sides of the pole piece; the cleaning unit 1 includes a magnetic attraction component 11 and a cleaning component 12; the magnetic attraction component 11 includes a shield 111, a magnetic rod 112 and a first driving member 113, the shield 111 has an inner cavity, the first driving member 113 is transmission-connected to the magnetic rod 112, and the first driving member 113 is used to drive the magnetic rod 112 to enter or leave the inner cavity; when the magnetic rod 112 enters the inner cavity, the magnetic force generated by the magnetic rod 112 can absorb the iron filings on the pole piece through the shield 111, thereby absorbing the iron filings on the pole piece on the shield 111; the cleaning component 12 is arranged on the shield 111, and when the magnetic rod 112 leaves the inner cavity, the cleaning component 12 can be driven by the second driving member 14 to move along the extension direction of the shield 111 and clean the iron filings on the shield 111.

[0045] Reference Figure 2 Specifically, the second driving member 14 includes a slide rail and a mechanical coupling cylinder, wherein the slide rail is parallel to the direction in which the shield 111 extends, and the mechanical coupling cylinder is connected to the cleaning assembly 12, and is used to drive the cleaning assembly 12 to reciprocate along the shield 111 to clean the iron filings on the shield 111.

[0046] It is understood that during the transfer of the pole piece, the magnetic suction component 11 of the cleaning unit 1 is used to absorb the iron filings on the corresponding pole piece. The cleaning units 1 are respectively provided on the upper and lower surfaces of the pole piece. The simultaneous adsorption on both sides can effectively remove the iron filings and impurities on the pole piece, thereby improving the yield and life of the pole piece. During the long-term use of the cleaning unit 1, the iron filings and impurities will gradually accumulate, and the magnetic suction component 11 needs to be regularly cleaned by the cleaning component 12 to improve the adsorption efficiency.

[0047] The magnetic assembly 11 uses a magnetic rod 112 to provide an attractive force, which is then transferred to the pole piece through the shield 111, thereby attracting the iron filings on the pole piece. In other words, after being attracted, the iron filings will accumulate on the shield 111. Then, the first driving member 113 is used to move the magnetic rod 112 away from the shield 111. The iron filings adsorbed on the shield 111 lose their magnetic attraction, and the cleaning assembly 12 can easily remove the iron filings from the shield 111. This achieves the purpose of removing fine iron filings and impurities from the pole piece.

[0048] The housing needs to be made of a material that is not easily magnetized and needs to be wear-resistant and structurally stable. It can be an alloy that is not easily magnetized, such as stainless steel, aluminum alloy, etc., or a composite plastic, ceramic material, etc. The magnetic rod 112 is preferably a permanent magnet.

[0049] The first driving member 113 is a cylinder, the output shaft of which is connected to the magnetic rod 112 , and the magnetic rod 112 is driven by the cylinder to enter or leave the inner cavity.

[0050] In some embodiments, reference Figure 1-3 , there can be multiple cleaning units 1 arranged on both sides of the pole piece, and they are staggered. In other words, the number of cleaning units 1 is at least two, located on both sides of the pole piece and staggered. In this way, the cleaning units 1 on both sides of the pole piece can respectively absorb iron filings on the corresponding surfaces of the pole piece, ensuring adsorption efficiency. To prevent the magnetic influence of the aligned cleaning units 1, the staggered arrangement is adopted to maximize the adsorption capacity of a single cleaning unit 1.

[0051] In some embodiments, reference Figure 2 、 5 The cleaning component 12 has a cleaning port 121 corresponding to the shape of the protective cover 111, a scraping portion 122 located in the cleaning port 121, a negative pressure chamber 123 connected to the cleaning port 121; and a dust removal box 13 located below the cleaning component 12, which is used to receive the iron filings that fall after cleaning by the cleaning component 12. That is, when the cleaning component 12 is cleaning, the adsorption surface of the protective cover 111 will be located in the cleaning port 121, and the scraping portion 122 of the cleaning port 121 will be used to remove the iron filings adhering to the protective cover 111, and the negative pressure generated by the negative pressure chamber 123 will suck the iron filings from the cleaning port 121 into the negative pressure chamber 123. The negative pressure chamber 123 is connected to the dust suction hole and is connected to an external negative pressure device (not shown) to provide negative pressure to the negative pressure chamber 123. In addition, the dust removal box 13 can collect the iron filings that fall after cleaning by the cleaning component 12.

[0052] Specifically, refer to Figure 4The shield 111 has a first adsorption surface 1111 perpendicular to the pole piece and a second adsorption surface 1112 parallel to the pole piece. That is to say, the adsorption surface of the shield 111 is composed of the first adsorption surface 1111 facing the pole piece and two second adsorption surfaces 1112 perpendicular to the pole piece. The first adsorption surface 1111 and the second adsorption surface 1112 form an inner cavity, and the magnetic rod 112 can be completely accommodated in the inner cavity, so that the iron filings can be completely adsorbed on the shield 111 instead of on the magnetic rod 112. Therefore, when the shield 111 needs to be cleaned, the three adsorption surfaces of the shield 111 need to be cleaned at the same time. The scraping portion 122 includes a first brush 1221 and a second brush 1222 arranged circumferentially along the cleaning port 121, and a scraper 1223 located within the cleaning port 121. The first brush 1221 and scraper 1223 are used to clean iron filings adsorbed by the first adsorption surface 1111, while the second brush 1222 is used to clean iron filings adsorbed by the second adsorption surface 1112. It is understood that since the first adsorption surface 1111 is closest to the electrode, it adsorbs the most iron filings, and the adsorbed iron filings may accumulate on the first adsorption surface 1111. Therefore, the first brush 1221 is required to work in conjunction with the scraper 1223 to clean the iron filings on the first adsorption surface 1111, while the second brush 1222 can clean the second adsorption surface 1112. More specifically, the first brush 1221 is preferably a row brush, and is respectively arranged on the left and right sides of the cleaning port 121; the second brush 1222 is preferably a bristle brush, and is respectively arranged on the upper and lower sides of the cleaning port 121; the scraper 1223 protrudes from the cleaning port 121 and is arranged for scraping out iron filings accumulated on the first adsorption surface 1111.

[0053] Further, refer to Figure 4 When the shield 111 is preferably a plane consisting of the first adsorption surface 1111 and the second adsorption surface 1112, the magnetic rod 112 is preferably a square columnar structure.

[0054] Further, refer to Figure 5, the scraper 1223 is movably connected to the cleaning assembly 12 via a connecting shaft, and an elastic member 1224 is provided on the connecting shaft to abut against the scraper 1223 and the cleaning assembly 12. It is understandable that when the scraper 1223 is cleaning the iron filings on the shell, it may encounter iron filings of different hardness or thickness. The elastic member 1224 can provide a certain buffering effect, which can absorb the impact force of the scraper 1223 during the scraping process and reduce damage to the scraper 1223 and the shell. On the other hand, the pressure applied by the scraper 1223 to the shell surface can be adjusted by adjusting the elasticity of the elastic member 1224, and the degree of contact between the scraper 1223 and the shell can be controlled to adapt to different cleaning needs. Through the buffering and regulating effect of the elastic member 1224, the direct wear between the scraper 1223 and the shell can be reduced, thereby extending the service life of the scraper 1223 and the cleaning assembly 12, and ensuring good contact between the scraper 1223 and the shell surface, improving cleaning efficiency, and ensuring that iron filings are effectively removed. The elastic member 1224 is preferably a spring, which is sleeved on the connecting shaft, and both ends of the spring are respectively in contact with the scraper 1223 and the cleaning assembly 12.

[0055] In some embodiments, the first driving member 113 and the mounting seat 21 are fixedly connected to the fixed plate 2; the protective cover 111 is fixedly connected to the mounting seat 21; the output end of the first driving member 113 is connected to the magnetic rod 112, and can be used to drive the magnetic rod 112 closer to or away from the protective cover 111. It can be understood that any cleaning unit 1 is mounted on the fixed plate 2, and the fixed plate 2 is located at both ends of the cleaning unit 1. Specifically, the connection method between the two ends of the cleaning unit 1 and the fixed plate 2 is the same. When two cleaning units 1 are installed on the fixed plate 2, the two cleaning units 1 are opposite and staggered, and a channel for the pole piece to pass through is formed between the two cleaning units 1. Refer to Figure 1 、 2 The shield 111 and the mounting base 21 are both fixedly mounted on the fixed plate 2. The vertical distance between the shield 111 and the pole piece is fixed, while the distance between the magnetic bar 112 and the pole piece can be changed. The first driving member 113 is used to drive the magnetic bar 112 toward or away from the shield 111. When the magnetic bar 112 approaches the shield 111 and enters the shield 111, the adsorption force provided by the magnetic bar 112 cleans the iron filings on the pole piece.

[0056] Further, refer to Figure 2, a connecting block 114 is fixedly installed at the end of the magnetic rod 112, and the output end of the first driving member 113 is connected to the magnetic rod 112 through the connecting block 114; the fixed block is connected to the mounting seat 21 through the third driving member 115 for transmission. The connecting block 114 is used to connect the first driving member 113 and the third driving member 115 and to connect with the magnetic rod 112, and the third driving member 115 is used to cooperate with the first driving member 113 to drive the magnetic rod 112 into the science shield 111. Specifically, the third driving member 115 is a slide cylinder, the slide cylinder body is fixedly set on the connecting block 114, the mounting seat 21 is provided with a track that cooperates with the slide cylinder, and the output end of the slide cylinder is fixedly connected to the mounting seat 21. Through the cooperation between the slide cylinder and the track, the magnetic rod 112 can move back and forth more smoothly. Preferably, the connecting block 114 is made of POM plastic.

[0057] Further, refer to Figure 3 The mounting seat 21 has a support arm 211 facing the cleaning assembly 12, and a buffer pad 212 is provided on the side of the support arm 211 facing the cleaning assembly 12. When the cleaning assembly 12 reciprocates along the shield 111 to clean iron filings on the surface of the shield 111, the support arm 211 and the buffer pad 212 provided on the support arm 211 can be used to limit the position of the cleaning assembly 12 and prevent the cleaning assembly 12 from colliding with the mounting seats 21 at both ends of the shield 111.

[0058] The utility model also discloses a coating device including the aforementioned dust removal mechanism. The dust removal mechanism can be used to remove iron filings and impurities from the electrode after coating, thereby improving the electrode yield and lifespan. Specifically, the dust removal mechanism is installed after the coating line passes through the oven zone.

[0059] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A magnetic bar dust removal mechanism, characterized in that: include: Cleaning units are provided on the electrode conveying path and on both sides of the electrode; The cleaning unit includes a magnetic attraction component and a cleaning component; The magnetic attraction assembly includes a shield, a magnetic rod, and a first driving member. The shield has an inner cavity. The first driving member is in transmission connection with the magnetic rod and is used to drive the magnetic rod to enter or leave the inner cavity. When the magnetic bar enters the inner cavity, the magnetic force generated by the magnetic bar can absorb the iron filings on the pole piece through the shield, thereby absorbing the iron filings on the pole piece onto the shield; The cleaning assembly is arranged on the shield. When the magnetic rod leaves the inner cavity, the cleaning assembly can be driven by a second driving member to move along the extension direction of the shield and clean the iron filings on the shield.

2. The dust removal mechanism according to claim 1, characterized in that: The cleaning assembly comprises a cleaning port corresponding to the shape of the shield, a scraping portion located in the cleaning port, and a negative pressure chamber communicating with the cleaning port; as well as The dust removal box located below the cleaning assembly is used to receive iron filings dropped after cleaning by the cleaning assembly.

3. The dust removal mechanism according to claim 2, characterized in that: The shield has a first adsorption surface perpendicular to the pole piece and a second adsorption surface parallel to the pole piece; The scraping part includes a first brush and a second brush arranged along the circumference of the cleaning port, and a scraper located in the cleaning port; The first brush and scraper are used to clean the iron filings adsorbed by the first adsorption surface, and the second brush is used to clean the iron filings adsorbed by the second adsorption surface.

4. The dust removal mechanism according to claim 3, characterized in that: The scraper is movably connected to the cleaning assembly via a connecting shaft, and an elastic member is provided on the connecting shaft for abutting against the scraper and the cleaning assembly.

5. The dust removal mechanism according to claim 1, characterized in that: Also included are a fixing plate and mount; The first driving member, the mounting seat and the fixing plate are fixedly connected; The shield is fixedly connected to the mounting seat; The output end of the first driving member is connected to the magnetic rod and can be used to drive the magnetic rod to approach or move away from the shield.

6. The dust removal mechanism according to claim 5, characterized in that: A connecting block is fixedly mounted on the end of the magnetic bar, and the output end of the first driving member is connected to the magnetic bar via the connecting block; the connecting block is transmission-connected to the mounting seat via a third driving member.

7. The dust removal mechanism according to claim 5, characterized in that: The mounting seat has a support arm facing the cleaning component, and a buffer pad is provided on the support arm on a side facing the cleaning component.

8. The dust removal mechanism according to claim 1, characterized in that: The cleaning units located on both sides of the pole piece are relatively staggered.

9. The dust removal mechanism according to any one of claims 1 to 8, characterized in that: The magnetic bar is a permanent magnet.

10. A coating device, characterized in that: It comprises the dust removal mechanism as described in any one of claims 1 to 9.

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