Anti-sticking coating structure for film guide rollers

Abstract

The utility model discloses a film guide roller's anti -sticky coating structure, include: anti -sticky cover, the anti -sticky cover surface is provided with a plurality of groups of honeycomb unit, the honeycomb unit is enclosed and is formed with the accommodation cavity, adjacent honeycomb unit shares a side wall, a plurality of honeycomb unit is mutually connected and is in the net -like structure on the anti -sticky cover surface, the accommodation cavity is filled with the protection layer structure, the utility model discloses a rigid support framework through the honeycomb unit in the anti -sticky cover formation, effectively avoid the stress concentration problem that traditional smooth surface led to because local uneven stress, thereby prevent coating cracking or peeling, every honeycomb unit encloses and forms independent accommodation cavity, provides the physical embedding space for the anticorrosive layer, wear -resisting layer and anti -sticky layer, and this "nested type" filling mode compares traditional plane coating, and the binding force between each functional layer is enhanced greatly, and the honeycomb side wall forms effective restraint to filling material, prevents the delamination peeling caused by external force impact or thermal expansion and cold shrinkage.

Description

Technical Field

[0001] This utility model relates to the field of anti-sticking guide roller technology, and in particular to the anti-sticking coating structure of film guide rollers. Background Technology

[0002] In the film manufacturing process, guide rollers are key transmission components. Their surfaces must have anti-stick properties to prevent film adhesion, while also being wear-resistant and corrosion-resistant to ensure long-term operational stability.

[0003] However, most existing anti-stick coatings are continuous planar structures. Although they can meet the anti-stick requirements in the early stages of use, once microcracks or pitting corrosion occur, stress is transmitted along the continuous coating surface, causing crack propagation and eventually leading to serious problems such as large-area peeling. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0005] The anti-stick coating structure of the film guide roller includes:

[0006] An anti-stick sleeve is provided on the surface of the anti-stick sleeve, the honeycomb units are arranged to form a receiving cavity, adjacent honeycomb units share a sidewall, the multiple sets of honeycomb units are connected to each other on the surface of the anti-stick sleeve to form a mesh structure, and the receiving cavity is filled with a protective layer structure.

[0007] The protective layer structure includes an anti-corrosion layer covering the surface of the anti-stick sleeve, a wear-resistant layer covering the surface of the anti-corrosion layer, and an anti-stick layer covering the surface of the wear-resistant layer.

[0008] As an improvement to the above technical solution, the inner wall of the anti-stick sleeve is provided with multiple sets of connectors arranged in a ring array. The connectors include a connecting block integrally formed with the anti-stick sleeve and a snap-fit ​​block integrally formed at the end of the connecting block. The anti-stick sleeve is detachably connected to the guide roller through the connectors.

[0009] As an improvement to the above technical solution, the surface of the guide roller is provided with multiple sets of slots whose number and position are adapted to the connecting parts. Both sides of the guide roller are integrally formed with fixed shafts. The surface of the fixed shaft is provided with threaded sections, and the surface of the fixed shaft is threaded with limit plates through the threaded sections.

[0010] As an improvement to the above technical solution, the anti-stick layer is a Teflon coating.

[0011] As an improvement to the above technical solution, the anti-corrosion layer is a calcium silicide layer.

[0012] As an improvement to the above technical solution, the wear-resistant layer is a silicon carbide coating layer.

[0013] The beneficial effects of this utility model are:

[0014] By forming a rigid support skeleton in the anti-stick sleeve through honeycomb units, the stress concentration problem caused by uneven local force on traditional smooth surfaces is effectively avoided, thereby preventing the coating from cracking or peeling and significantly improving the overall structural strength.

[0015] Each honeycomb unit encloses an independent cavity, providing a physical embedding space for the anti-corrosion layer, wear-resistant layer, and anti-stick layer. Compared with traditional planar coating, this "nested" filling method greatly enhances the bonding force between the functional layers. The honeycomb sidewalls effectively constrain the filling material, preventing delamination and detachment caused by external impact or thermal expansion and contraction.

[0016] When the protective layer within a cellular cell fails due to accidental wear or corrosion, the damage is confined to the cavity and will not spread to adjacent areas, effectively preventing large-area coating failure and extending service life. Attached Figure Description

[0017] Figure 1 This is a front view of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the anti-stick sleeve of this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the protective layer structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the guide roller of this utility model.

[0021] Reference numerals: 10, anti-stick sleeve; 11, snap-fit ​​block; 12, connecting block; 101, honeycomb unit; 102, anti-corrosion layer; 103, wear-resistant layer; 104, anti-stick layer; 20, guide roller; 201, slot; 21, fixed shaft; 211, threaded section; 22, limiting piece. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The anti-stick coating structure of the film guide roller includes:

[0024] An anti-stick sleeve 10 is provided on the surface of which multiple sets of honeycomb units 101 are provided. The honeycomb units 101 are arranged to form a receiving cavity. Adjacent honeycomb units 101 share a sidewall. Multiple sets of honeycomb units 101 are interconnected on the surface of the anti-stick sleeve 10 to form a mesh structure. The receiving cavity is filled with a protective layer structure.

[0025] The protective layer structure includes an anti-corrosion layer 102 covering the surface of the anti-stick sleeve 10, a wear-resistant layer 103 covering the surface of the anti-corrosion layer 102, and an anti-stick layer 104 covering the surface of the wear-resistant layer 103.

[0026] Specifically, the honeycomb cells form a rigid support skeleton on the entire surface of the anti-stick sleeve 10, avoiding stress concentration caused by uneven local force on traditional smooth surfaces, which can lead to coating cracking or peeling. The cavity enclosed by each honeycomb cell provides an independent filling space for the internal protective layer structure. The cavity provides a physical embedding space for the anti-corrosion layer 102, wear-resistant layer 103, and anti-stick layer 104, allowing each layer to better bond with the substrate. Compared with traditional planar coating, this "nested" filling method significantly enhances the interlayer bonding force. The honeycomb walls constrain the internal filling material, effectively preventing coating separation caused by external impact or thermal expansion and contraction. Regarding the issue of layer detachment, if the protective layer within a certain honeycomb cell 101 fails due to accidental wear or corrosion, the damage is confined to an independent cavity and will not spread to adjacent areas, thus avoiding the problem of large-scale coating failure that "affects the whole body." The anti-corrosion layer 102 isolates corrosive media and prevents the anti-stick sleeve 10 from oxidizing. The wear-resistant layer 103 increases surface hardness, resists long-term friction and wear caused by the high-speed operation of the film on the guide roller surface, and maintains the smoothness and flatness of the anti-stick sleeve surface. The anti-stick layer 104 reduces surface energy, effectively reducing the adhesion of film materials to the guide roller surface, improving the demolding efficiency of the film, reducing film scratches, and reducing the difficulty of cleaning and maintenance.

[0027] In one embodiment, the inner wall of the anti-stick sleeve 10 is provided with a plurality of connecting members arranged in a ring array. The connecting members include a connecting block 12 integrally formed with the anti-stick sleeve 10 and a snap-fit ​​block 11 integrally formed at the end of the connecting block 12. The anti-stick sleeve 10 is detachably connected to the guide roller 20 through the connecting members.

[0028] The guide roller 20 has multiple sets of slots 201 on its surface, the number and position of which are adapted to the connecting parts. Fixed shafts 21 are integrally formed on both sides of the guide roller 20. The surface of the fixed shafts 21 has threaded sections 211. Limiting pieces 22 are threaded onto the surface of the fixed shafts 21 through the threaded sections 211. The anti-stick sleeve 10 is aligned with the guide roller 20, so that the locking block 11 is aligned with the slot 201. The anti-stick sleeve 10 is pushed axially along the guide roller 20, and the locking block 11 is inserted into the slot 201. This locking method is similar to... Similar to a "keyway" structure, it can ensure that the anti-stick sleeve and the guide roller rotate synchronously, avoiding slippage or deviation. After the anti-stick sleeve 10 is fully in place, the limiting piece 22 is screwed into the threaded section 211 of the fixed shaft 21, so that the limiting piece 22 presses against the end face of the anti-stick sleeve 10, completing the axial fixation. When the coating on the surface of the anti-stick sleeve 10 is worn or fails, it is only necessary to unscrew the limiting piece 22 and axially disassemble the anti-stick sleeve 10 for replacement. This detachable structure can avoid the overall scrapping of traditional guide rollers due to coating damage, significantly reducing maintenance costs and extending the service life of the equipment.

[0029] In one embodiment, the anti-stick layer 104 is a Teflon coating. The Teflon layer has extremely low surface energy, thus exhibiting excellent anti-stick properties and resistance to corrosion from chemicals such as acids, alkalis, and solvents.

[0030] In one embodiment, the anti-corrosion layer 102 is a calcium silicide layer, which is suitable for high-temperature environments and can effectively isolate moisture, acids, alkalis and oxidizing media.

[0031] In one embodiment, the wear-resistant layer 103 is a silicon carbide coating layer, which has strong resistance to sliding wear and erosion.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. Anti-sticking coating structure for film guide rollers, characterized in that, include: An anti-stick sleeve (10) is provided on the surface of the anti-stick sleeve (10) with multiple sets of honeycomb units (101). The honeycomb units (101) enclose a cavity. Adjacent honeycomb units (101) share a sidewall. Multiple sets of honeycomb units (101) are interconnected on the surface of the anti-stick sleeve (10) to form a mesh structure. The cavity is filled with a protective layer structure. The protective layer structure includes an anti-corrosion layer (102) covering the surface of the anti-stick sleeve (10), a wear-resistant layer (103) covering the surface of the anti-corrosion layer (102), and an anti-stick layer (104) covering the surface of the wear-resistant layer (103).

2. The anti-stick coating structure for a film guide roller according to claim 1, characterized by: The inner wall of the anti-stick sleeve (10) is provided with multiple sets of connectors arranged in a ring array. The connectors include a connecting block (12) integrally formed with the anti-stick sleeve (10) and a snap-fit ​​block (11) integrally formed at the end of the connecting block (12). The anti-stick sleeve (10) is detachably connected to the guide roller (20) through the connectors.

3. The anti-stick coating structure for a film guide roller according to claim 2, characterized in that: The guide roller (20) has multiple sets of slots (201) on its surface, the number and position of which are adapted to the connector. Both sides of the guide roller (20) are integrally formed with fixed shafts (21). The surface of the fixed shaft (21) is provided with threaded sections (211). The surface of the fixed shaft (21) is threaded with limit plates (22) through the threaded sections (211).

4. The anti-stick coating structure for a film guide roller according to claim 1, characterized by: The anti-stick layer (104) is a Teflon coating.

5. The anti-stick coating structure for a film guide roller according to claim 1, characterized by: The anti-corrosion layer (102) is a calcium silicide layer.

6. The anti-stick coating structure for a film guide roller according to claim 1, characterized by: The wear-resistant layer (103) is a silicon carbide coating layer.

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