A foldable boehmite doctor blade

By designing a foldable boehm stone scraper and adopting a magnetic fixing and limiting block structure, the problem of easy damage to boehm stone scrapers during transportation and use has been solved, achieving scraper protection and stability, and reducing replacement frequency and wear risk.

CN224443580UActive Publication Date: 2026-07-03CHANGZHOU HUANFENG NEW MATERIAL EQUIP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU HUANFENG NEW MATERIAL EQUIP CO LTD
Filing Date
2025-08-11
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Boehm stone scrapers are easily damaged by impacts during transportation, installation, or cleaning. They are brittle and require frequent replacement.

Method used

Design a foldable boehm scraper that uses magnetic fixation and limiting blocks to allow the scraper blade to rotate and fold for storage, forming a closed space to prevent external collisions and contamination.

Benefits of technology

Effectively protects boehm stone scrapers during non-working periods, reducing the risk of physical damage, lowering replacement frequency, ensuring scraper stability, and preventing wear caused by vibration and misalignment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of coating equipment especially relates to a foldable boehmite doctor blade, including doctor blade board, doctor blade board rotation sets up on doctor blade folding storage seat, the doctor blade board for installing storage cavity is opened to the doctor blade folding storage seat upper surface department, the middle part of storage cavity is provided with first rotation rod, and the doctor blade board rotation cooperation is in first rotation rod, and one end of doctor blade board is arranged as doctor blade face, the utility model doctor blade board can rotate and fold to the storage cavity, forms the closed space after closing by the cover plate, is thoroughly isolated external collision and pollution in the transportation storage process, guarantees boehmite doctor blade to be completely stored in the non -working period, reduces the physical damage risk, significantly reduces the replacement frequency, and the first magnetic attraction piece and second magnetic attraction piece of magnetic attraction fixed design ensure that the cover plate is closed firm, avoid accidental opening, and the cooperation locking doctor blade working angle of limiting stopper and limiting stop groove prevents the wear and tear of the blade edge caused by vibration deviation.
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Description

Technical Field

[0001] This utility model relates to the field of coating equipment technology, and in particular to a foldable boehm stone scraper. Background Technology

[0002] A lithium battery separator production line refers to a series of equipment and processes used to produce lithium battery separators. The separator is a crucial component of a lithium battery; it isolates the positive and negative electrodes, preventing short circuits, while allowing lithium ions to pass through, enabling the battery to charge and discharge. The quality and performance of the separator directly affect the safety, cycle life, and energy density of the lithium battery. Separator coating machines are often used in the lithium battery separator coating process.

[0003] Diaphragm coating machines are all equipped with scrapers, which are used to apply adhesive. Some scrapers are made of expensive boehmite, which is used in high-end scrapers due to its excellent wear resistance and chemical stability. However, it is brittle and easy to break, especially during transportation, installation or cleaning, it is easily damaged by bumps. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a foldable boehm stone scraper.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A foldable boehmite scraper includes a scraper plate rotatably mounted on a scraper folding and storage base. The upper surface of the scraper folding and storage base has a scraper plate for mounting a storage cavity. A first rotating rod is provided in the middle of the storage cavity. The scraper plate is rotatably fitted onto the first rotating rod. One end of the scraper plate is provided as a scraper surface, and the other end is provided with a second rotating hole for fitting onto the first rotating rod. Limiting grooves are symmetrically provided on both sides of the scraper plate. A cover plate is rotatably fitted onto the upper surface of the scraper folding and storage base.

[0007] In addition, a preferred structure is that a second rotating rod is provided at one end of the scraper folding storage base, the cover plate is rotatably fitted on the second rotating rod, and first mounting plates are symmetrically provided on the two side walls of the scraper folding storage base.

[0008] In addition, a preferred structure is that a first mounting groove is provided on both side walls of the storage cavity, and a first magnetic block is placed in each of the first mounting grooves.

[0009] In addition, a preferred structure is that a second mounting plate is symmetrically arranged on both sides of the cover plate, the second mounting plate overlaps and fits with the first mounting plate, and mounting holes are opened on both the second mounting plate and the first mounting plate.

[0010] In addition, a preferred structure is that the bottom end of the cover plate is provided with a first rotating hole, which is used to fit with the second rotating rod.

[0011] In addition, in a preferred structure, the cover plate is provided with symmetrical limit blocks on the other end away from the first rotating hole and on the side surface that is in contact with the scraper folding and storage seat. The limit blocks are used to be locked in the limit slots. A second mounting groove is provided on the side of the cover plate located on the limit block, and a second magnetic block is provided in the second mounting groove.

[0012] The beneficial effects of this utility model are as follows: The scraper blade can be rotated and folded into the storage cavity, forming a closed space after the cover is closed. This completely isolates the scraper blade from external collisions and contamination during transportation and storage, ensuring that the boehm scraper blade is completely stored during non-working periods, reducing the risk of physical damage and significantly reducing the replacement frequency. The magnetic fixing design of the first and second magnetic blocks ensures that the cover is closed securely and avoids accidental opening. The cooperation of the limiting block and the limiting slot locks the working angle of the scraper blade, preventing blade wear caused by vibration and displacement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the scraper blade in its unfolded state;

[0014] Figure 2 A schematic diagram of the scraper blade folding storage cover in the open state;

[0015] Figure 3 This is a structural diagram of a scraper folding storage base;

[0016] Figure 4 This is a schematic diagram of the storage cavity structure;

[0017] Figure 5 This is a schematic diagram of the scraper blade structure;

[0018] Figure 6 This is a schematic diagram of the cover plate structure;

[0019] Figure 7 This is a partially enlarged structural diagram of the cover plate.

[0020] In the diagram: 1. Scraper folding storage base, 11. Storage cavity, 111. First mounting groove, 12. First rotating rod, 13. Second rotating rod, 14. First mounting plate, 2. Cover plate, 21. Second mounting plate, 22. Limiting block, 23. Second mounting groove, 24. First rotating hole, 3. Scraper plate, 31. Limiting groove, 32. Second rotating hole, 4. First magnetic block, 5. Second magnetic block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-7 A foldable boehmstone scraper includes a scraper plate 3, which is rotatably mounted on a scraper folding and storage base 1. The upper surface of the scraper folding and storage base 1 has a scraper plate 3 for mounting a storage cavity 11. A first rotating rod 12 is provided in the middle of the storage cavity 11. The scraper plate 3 is rotatably fitted on the first rotating rod 12. One end of the scraper plate 3 is set as a scraper surface, and the other end is provided with a second rotating hole 32 for fitting at the first rotating rod 12. Limiting grooves 31 are symmetrically provided on both sides of the scraper plate 3. A cover plate 2 is rotatably fitted on the upper surface of the scraper folding and storage base 1. The scraper plate 3 is made of boehmstone and can be folded and stored in the scraper folding and storage base 1.

[0023] Furthermore, a second rotating rod 13 is provided at one end of the scraper folding storage base 1, and the cover plate 2 is rotatably engaged with the second rotating rod 13. A first mounting plate 14 is symmetrically provided on both side walls of the scraper folding storage base 1. The first mounting plate 14 is used to install the scraper folding storage base 1 onto the coating machine.

[0024] Meanwhile, a first mounting groove 111 is provided on both sides of the storage cavity 11, and a first magnetic block 4 is placed in each of the first mounting grooves 111. The first magnetic block 4 is used to magnetically attract and cooperate with the second magnetic block 5.

[0025] In addition, second mounting plates 21 are symmetrically arranged on both sides of the cover plate 2. The second mounting plates 21 overlap and fit with the first mounting plate 14. Mounting holes are provided on both the second mounting plates 21 and the first mounting plate 14. A first rotating hole 24 is provided at the bottom of the cover plate 2. The first rotating hole 24 is used to fit the second rotating rod 13. The cover plate 2 is used to store the scraper plate 3 in the storage cavity 11.

[0026] Among them, the other end of the cover plate 2 away from the first rotating hole 24 and the surface of the side that is in contact with the scraper folding storage seat 1 is symmetrically provided with a limiting block 22. The limiting block 22 is used to be locked in the limiting slot 31. A second mounting slot 23 is opened on one side of the cover plate 2 located at the limiting block 22. A second magnetic block 5 is provided in the second mounting slot 23. The limiting block 22 is used to fix the position of the scraper plate 3.

[0027] In this embodiment, when storing and transporting the boehmite scraper 3, in order to prevent the scraper 3 from being exposed alone and to prevent it from breaking, the cover plate 2 is rotated open, the scraper 3 is rotated so that it is folded and stored in the storage cavity 11, and then the cover plate 2 is closed. The first magnetic block 4 and the second magnetic block 5 are magnetically attached together, so that the cover plate 2 will not open. The scraper folding storage base 1 and the cover plate 2 protect the scraper 3 inside from damage.

[0028] When using the scraper blade 3 and installing it on the coating machine for diaphragm coating, open the cover plate 2, unfold the scraper blade 3, and after the cover plate 2 is closed, the limiting block 22 is engaged with the limiting slot 31. After the cover plate 2 is closed, the first mounting plate 14 and the second mounting plate 21 overlap. The first mounting plate 14 and the second mounting plate 21 are used to install the fixing components onto the coating machine, making it difficult to separate the scraper folding storage seat 1 and the cover plate 2.

[0029] In this invention, the scraper blade 3 can be rotated and folded into the storage cavity 11. After the cover plate 2 is closed, a closed space is formed, which completely isolates external collisions and contamination during transportation and storage, ensuring that the boehm stone scraper is completely stored during non-working periods, reducing the risk of physical damage and significantly reducing the replacement frequency. The magnetically fixed design of the first magnetic block 4 and the second magnetic block 5 ensures that the cover plate 2 is closed firmly and avoids accidental opening. The cooperation of the limiting block 22 and the limiting groove 31 locks the working angle of the scraper and prevents blade wear caused by vibration and displacement.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A foldable boehmite doctor blade comprising a doctor blade plate (3) rotatably arranged in a doctor blade folding storage seat (1), characterized in that, The scraper folding storage base (1) has a scraper plate (3) for installing the storage cavity (11) on its upper surface. A first rotating rod (12) is provided in the middle of the storage cavity (11). The scraper plate (3) is rotatably fitted on the first rotating rod (12). One end of the scraper plate (3) is set as a scraper surface, and the other end is set with a second rotating hole (32). The second rotating hole (32) is used to fit at the first rotating rod (12). Limiting slots (31) are symmetrically opened on both sides of the scraper plate (3). A cover plate (2) is rotatably fitted on the upper surface of the scraper folding storage base (1).

2. The foldable boehmite doctor blade according to claim 1, wherein The scraper folding storage base (1) is provided with a second rotating rod (13) at one end, and the cover plate (2) is rotatably fitted on the second rotating rod (13). The scraper folding storage base (1) is provided with first mounting plates (14) symmetrically on both side walls.

3. The foldable boehmite doctor blade according to claim 1, wherein The storage cavity (11) has a first mounting groove (111) on both sides of the side wall, and a first magnetic block (4) is placed in the first mounting groove (111).

4. The foldable boehmite doctor blade of claim 1, wherein, The cover plate (2) is symmetrically provided with a second mounting plate (21) on both sides. The second mounting plate (21) overlaps and fits with the first mounting plate (14). Mounting holes are provided on both the second mounting plate (21) and the first mounting plate (14).

5. A foldable boehmite doctor blade according to claim 4, wherein The bottom end of the cover plate (2) is provided with a first rotating hole (24), which is used to fit with the second rotating rod (13).

6. A foldable boehmite doctor blade according to claim 5, wherein On the other end of the cover plate (2) away from the first rotating hole (24) and on the side surface that is in contact with the scraper folding storage seat (1), there are symmetrically arranged limit blocks (22). The limit blocks (22) are used to be locked in the limit slot (31). A second mounting slot (23) is provided on the side of the cover plate (2) located on the limit block (22). A second magnetic block (5) is provided in the second mounting slot (23).