Compression roller structure and coating machine

Abstract

The compression roller structure comprises a core shaft roller and an elastic roller, the core shaft roller comprises a main body part and installation parts which are connected with each other, the installation parts are arranged at the two ends of the main body part and used for being connected with a driving piece of the coating machine, the elastic roller is arranged on the main body part in a sleeved mode, and meanwhile the elastic roller is arranged on the main body part in the axis direction of the core shaft roller. The ratio of the length W1 of the core shaft roller to the length W2 of the elastic roller is K, and K is larger than or equal to 1.5 and smaller than or equal to 4.

Description

Technical Field

[0001] This utility model relates to the field of winding device technology, and in particular to a pressure roller structure and a coating machine. Background Technology

[0002] In modern manufacturing, coating machines, as one of the key pieces of equipment, are widely used in the coating process of various materials. The performance and reliability of the coating machine directly affect the quality of the product, and the design and operational stability of the pressure roller structure, as an important component of the coating machine, are particularly important. Existing coating machine pressure roller structures often face the problem of asynchronous pressing of the left and right cylinders during operation, which can lead to a series of production defects.

[0003] First, asynchronous cylinder pressing will cause uneven stress on the electrode during coating. This uneven stress can lead to insufficient pressure on the electrode during coating, affecting the uniformity and adhesion of the coating. Second, due to uneven pressure, the electrode may slip during transport, which not only affects production efficiency but also leads to material waste. Furthermore, unevenly stressed electrodes are prone to wrinkling during pressing, further negatively impacting the product's appearance and performance. More seriously, this uneven pressure distribution may cause the electrode to crack, directly affecting the product's integrity and lifespan.

[0004] Therefore, how to alleviate the left-right difference caused by the asynchronous pressing of the winding pressure roller cylinder in the existing coating machine has become an urgent technical problem to be solved. Utility Model Content

[0005] One objective of this invention is to provide a pressure roller structure and a coating machine, which aims to solve the technical problem of how to alleviate the left-right difference caused by the asynchronous pressing of the winding pressure roller cylinder in existing coating machines.

[0006] To achieve the above objectives, the present invention provides a solution as follows: a pressure roller structure, which includes a mandrel roller, a main body and a mounting part connected to each other, the mounting part being disposed at both ends of the main body for connection with the drive component of a coating machine; and an elastic roller sleeved on the main body; wherein, in the axial direction of the mandrel roller, the ratio of the length W1 of the mandrel roller to the length W2 of the elastic roller is K, where 1.5≤K≤4.

[0007] Optionally, the elastic roller includes a contact portion and a fixed portion connected to each other. The fixed portion is disposed at the end of the contact portion, and the ratio of the roller diameter D1 of the fixed portion to the roller diameter D2 of the contact portion is N, where 0.6≤N≤0.8.

[0008] Optionally, there are multiple elastic rollers, which are spaced apart and fitted onto the main body.

[0009] Optionally, the elastic roller also includes a connecting part, and the number of contact parts is multiple. The connecting part connects adjacent contact parts, and the ratio of the roller diameter D3 of the connecting part to the roller diameter D2 of the contact part is H, where 0.6≤H≤0.8.

[0010] Optionally, in the axial direction of the elastic roller, the ratio of the length W3 of the contact portion to the length W4 of the connecting portion is L, where 4≤L≤6.

[0011] Optionally, the pressure roller structure also includes a fixing member, with a fixing hole provided in the fixing part or connecting part, and a positioning hole provided in the main body part. The fixing member passes through the fixing hole and the positioning hole and is connected to the main body part.

[0012] Optionally, the pressure roller structure also includes a fixing member, with a fixing hole provided in the fixing part or connecting part, and an adjustment groove provided in the main body part. The adjustment groove is arranged along the axial direction of the main body part, and the fixing member passes through the fixing hole and the adjustment groove and is connected to the main body part.

[0013] Optionally, the ratio of the roller diameter D2 of the contact portion to the roller diameter D4 of the main body is M, where 2≤M≤3.

[0014] Optionally, the mandrel roller is made of metal and the elastic roller is made of rubber.

[0015] To achieve the above objectives, another solution provided by this utility model is: a coating machine, which includes the aforementioned pressure roller structure.

[0016] The beneficial effects of this utility model are as follows:

[0017] Compared to the traditional method of using a single flat aluminum roller, this application employs a combination of a mandrel roller and an elastic roller. The elastic roller directly contacts the electrode sheet, rather than the entire roller body participating in the contact. This reduces the contact area and mitigates uneven stress caused by asynchronous drive mechanisms on both sides of the roller, significantly improving the wrinkling phenomenon that may occur during electrode winding. Furthermore, due to the reduced contact area, the stress applied by the roller is more concentrated in localized areas, increasing the friction between the electrode sheet and the roller surface during winding. This effectively avoids the slippage problem that may occur with traditional flat aluminum rollers, further improving winding quality and product stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of an existing pressure roller structure provided in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the pressure roller structure provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of another pressure roller structure provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of another pressure roller structure provided in this embodiment of the utility model;

[0023] Figure 5 This is a front view of another pressure roller structure provided in this embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of a mandrel roller structure provided in an embodiment of this utility model;

[0025] Figure 7 This is a schematic diagram of another mandrel roller structure provided in this embodiment of the utility model;

[0026] Figure 8 This is provided by the embodiment of the present utility model. Figure 5 Cross-sectional view along the AA direction;

[0027] Figure 9 This is provided by the embodiment of the present utility model. Figure 8 A magnified view of a portion of region A in the middle.

[0028] Explanation of icon numbers:

[0029] 10. Mandrel roller; 11. Main body; 111. Positioning hole; 112. Adjustment groove; 12. Mounting part; 20. Elastic roller; 21. Contact part; 22. Fixing part; 23. Connecting part; 24. Fixing hole; 30. Fixing component; 40. Flat aluminum roller; 50. Electrode sheet. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0032] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0033] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of an existing pressure roller structure provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the pressure roller structure provided in an embodiment of the present invention.

[0034] This utility model provides a pressure roller structure designed to improve the left-right difference caused by asynchronous pressing of the pressure roller cylinders during the winding process of a coating machine, thereby effectively reducing wrinkles on the electrode sheet 50 during the winding process and improving coating quality and production stability.

[0035] The pressure roller structure includes a mandrel roller 10 and an elastic roller 20. The mandrel roller 10 includes a main body 11 and a mounting part 12 connected to each other. The mounting part 12 is located at both ends of the main body 11 and is used to connect to the drive unit of the coating machine to provide stable support and power transmission. The elastic roller 20 is sleeved on the outside of the main body 11 and directly contacts the electrode 50 to achieve uniform pressing. In addition, in the axial direction of the mandrel roller 10, the ratio of the length W1 of the mandrel roller 10 to the length W2 of the elastic roller 20 is K, ranging from 1.5 ≤ K ≤ 4. Within this range, the length of the elastic roller 20 relative to the mandrel roller 10 is moderate, thereby optimizing the force characteristics and working stability of the roller.

[0036] In this embodiment, the present application employs a combination of a mandrel roller 10 and an elastic roller 20, which is significantly different from the conventional approach that uses only a single flat aluminum roller 40. The innovation of this structure lies in the fact that only the elastic roller 20 directly contacts the electrode 50, rather than the entire roller body participating in the action. Furthermore, in the axial direction, the length of the elastic roller 20 is much shorter than the length of the mandrel roller 10. This design significantly reduces the contact area between the pressure roller and the electrode 50.

[0037] By reducing the contact area, this structure effectively reduces uneven force caused by asynchronous drive devices on both sides of the roller, thus significantly improving the wrinkling phenomenon that may occur during the winding of the electrode 50. At the same time, due to the reduced contact area, the stress applied by the roller in local areas is more concentrated, which increases the friction between the electrode 50 and the roller surface during winding, thereby effectively avoiding the slippage problem that may occur with traditional flat aluminum rollers 40, further improving winding quality and product stability.

[0038] In a further optimized embodiment of this utility model, the elastic roller 20 is composed of a contact part 21 and a fixing part 22 connected to each other, wherein the fixing part 22 is located at the end of the contact part 21 and is used to firmly install the elastic roller 20 on the mandrel roller 10 to ensure that it maintains a stable structural shape during operation and does not shift or loosen.

[0039] While ensuring the overall stability of the elastic roller 20, the fixing part 22 also needs to consider its impact on the contact part 21. If the roller diameter of the fixing part 22 is too large, it will have an adverse effect on the contact part 21, reducing the elastic adjustment capability of the elastic roller 20 during operation, and thus affecting the bonding effect when the electrode sheet 50 is wound up. On the other hand, if the roller diameter of the fixing part 22 is too small, it may lead to insufficient fixing strength, affecting the durability and reliability of the overall structure.

[0040] Therefore, this application specifically sets the ratio of the roller diameter D1 of the fixing part 22 to the roller diameter D2 of the contact part 21 to be N, where 0.6 ≤ N ≤ 0.8. By controlling the range of N within this range, it is possible to ensure the fixing strength while avoiding interference with the flexibility and working performance of the contact part 21, so that the elastic roller 20 can be stably fixed and fully exert its elastic effect, thereby improving the winding quality.

[0041] Please see Figure 3 , Figure 3 This is a schematic diagram of another pressure roller structure provided by an embodiment of the present invention. In some embodiments of the present invention, the number of elastic rollers 20 is not limited to a single one, but rather a design of multiple elastic rollers 20 are adopted, and these elastic rollers 20 are distributed at certain intervals along the axial direction of the mandrel roller 10 and are sequentially sleeved on the main body 11.

[0042] The spaced arrangement of multiple elastic rollers 20 optimizes the stress distribution on the pressure roller, improving the uniformity and stability of the electrode sheet 50 during winding. Compared to a single elastic roller 20, the arrangement of multiple elastic rollers 20 creates a more concentrated pressing effect in localized areas, while reducing the deformation of a single elastic roller 20 due to prolonged stress, thereby extending the overall service life of the pressure roller. Furthermore, the spacing between the elastic rollers 20 allows for more flexible contact of the electrode sheet 50 as it passes through the pressure roller, helping to alleviate uneven material stretching or wrinkling issues that may arise from continuous stress on the roller surface.

[0043] Please see Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of another pressure roller structure provided in this embodiment of the utility model. Figure 5 This is a front view of another pressure roller structure provided by an embodiment of the present invention. In other embodiments, the structure of the elastic roller 20 is not limited to a spaced arrangement between individual elastic rollers 20, but can also adopt an integrated multi-segment design, that is, the elastic roller 20 also includes a connecting part 23, and is composed of multiple contact parts 21. Each contact part 21 is still responsible for direct contact with the electrode 50, while the connecting part 23 is used to connect adjacent contact parts 21 into one, thereby forming an integral multi-segment elastic roller 20 structure.

[0044] While maintaining the independent force-bearing characteristics of multiple contact parts 21, the overall integrity and stability of the structure are increased. Although traditional multiple independent elastic rollers 20 can provide good force distribution, the overall working effect of the pressure roller may be affected by the loosening or misalignment of individual elastic rollers 20 during high-speed operation or long-term work. However, by using the connecting part 23 to integrate multiple contact parts 21, this risk can be effectively reduced, ensuring that the elastic roller 20 maintains a stable structural shape during operation and avoiding uneven force problems caused by the displacement or damage of individual elastic rollers 20.

[0045] Furthermore, to balance the connection portion 23 and the contact portion 21, ensuring both good overall support and without affecting the elastic pressure applied by the contact portion 21 to the electrode 50, this application specifically sets the ratio of the roller diameter D3 of the connection portion 23 to the roller diameter D2 of the contact portion 21 to be H, and controls it within 0.6 ≤ H ≤ 0.8. Within this range, it ensures that the connection portion 23 is sufficiently robust to prevent the overall structure from breaking or deforming under stress, while also avoiding unnecessary interference of the connection portion 23 with the elastic properties of the contact portion 21, allowing the contact portion 21 to still effectively adhere to the electrode 50 and provide uniform pressure.

[0046] In a further optimization of this utility model, the length ratio of the contact portion 21 to the connecting portion 23 in the elastic roller 20 is set. In the axial direction of the elastic roller 20, the ratio of the length W3 of the contact portion 21 to the length W4 of the connecting portion 23 is L, where 4 ≤ L ≤ 6. That is, the length of the contact portion 21 is much greater than that of the connecting portion 23, while the proportion of the connecting portion 23 in the entire elastic roller 20 is relatively small.

[0047] The main purpose is to ensure that the contact portion 21 plays a dominant role in the overall structure of the elastic roller 20, enabling it to provide sufficient support and clamping for the electrode 50, while avoiding interference from the connecting portion 23 on the flexibility and elasticity adjustment performance of the contact portion 21. The length ratio setting further optimizes the working stability of the pressure roller. During the winding process, since the contact portion 21 mainly bears the responsibility of pressure distribution, its sufficient length ensures that the electrode 50 is subjected to uniform force when passing through the pressure roller, thereby reducing wrinkles or slippage caused by uneven pressure. At the same time, an appropriate amount of connecting portion 23 can enhance the overall rigidity of the elastic roller 20 without affecting the contact effect, preventing deformation or displacement of individual contact portions 21 due to uneven force, thus improving the operational reliability of the equipment.

[0048] Please see Figure 6 , Figure 6 This is a schematic diagram of a mandrel roller 10 structure provided in an embodiment of the present invention. In a further optimized version of the present invention, in order to ensure that the elastic roller 20 is securely installed on the mandrel roller 10 and to prevent axial or radial slippage during operation, a fixing member 30 is introduced into the pressure roller structure to enhance the overall fixing effect.

[0049] Specifically, the pressure roller structure also includes a fixing member 30. Fixing holes 24 are provided on the fixing part 22 or the connecting part 23 of the elastic roller 20. At the same time, positioning holes 111 are also provided on the main body part 11 of the mandrel roller 10. During installation, the fixing member 30 passes through the fixing holes 24 and the positioning holes 111 and is reliably connected to the main body part 11, thereby firmly fixing the elastic roller 20 on the mandrel roller 10 and avoiding loosening or displacement caused by high-speed operation or long-term use.

[0050] In this embodiment, a mechanical fixing method is adopted, which offers higher reliability and durability compared to traditional adhesive or friction fixing methods. Traditional friction fixing methods may loosen after prolonged use due to material aging or uneven stress on the elastic roller 20. This application, by employing a mechanical fixing method, makes the connection between the elastic roller 20 and the mandrel roller 10 more stable, effectively extending the service life of the pressure roller. Furthermore, the addition of the fixing component 30 makes the installation and replacement of the elastic roller 20 more convenient, reduces maintenance costs, and further improves the efficiency of the equipment.

[0051] Please see Figures 7 to 9 , Figure 7 This is a schematic diagram of another mandrel roller 10 structure provided in this embodiment of the utility model. Figure 8 This is provided by the embodiment of the present utility model. Figure 5 Cross-sectional view along the AA direction. Figure 9 This is provided by the embodiment of the present utility model. Figure 8A partial enlarged view of region A in the middle. In some other embodiments, in order to further enhance the flexibility of the pressure roller structure, the fixing method has been optimized so that the elastic roller 20 can not only be firmly installed on the mandrel roller 10, but also be positionally adjustable along the axial direction, so as to flexibly adjust the force area and contact position of the pressure roller according to the actual application requirements.

[0052] Specifically, the pressure roller structure also includes a fixing member 30. Fixing holes 24 are provided on the fixing part 22 or the connecting part 23, while the main body 11 has a corresponding adjusting groove 112. Unlike conventional fixing holes 24, the adjusting groove 112 extends along the axial direction of the main body 11, forming an adjustable installation channel. During installation, the fixing member 30 passes through the fixing holes 24 and the adjusting groove 112, and is reliably connected to the main body 11, thereby ensuring the stable installation of the elastic roller 20 while allowing it to slide and adjust its position axially within a certain range.

[0053] In this embodiment, the installation of the elastic roller 20 is no longer fixed but adjustable due to the setting of the adjustment groove 112. In actual use, the operator can adjust the specific position of the elastic roller 20 according to different electrode widths 50, winding tension requirements, or other process conditions, thereby optimizing the force distribution on the electrode 50 and improving the adaptability of the coating machine. For example, when processing narrower electrode 50s, the elastic roller 20 can be adjusted towards the center to ensure uniform pressure distribution; while when processing wider electrode 50s, the spacing of the elastic rollers 20 can be appropriately adjusted to cover a larger area to meet production needs.

[0054] In a further optimization of this utility model, in order to ensure the working performance of the elastic roller 20 and optimize the contact effect between the pressure roller and the electrode 50, this application has precisely set the ratio between the roller diameter of the contact portion 21 and the roller diameter of the main body portion 11 of the mandrel roller 10.

[0055] Specifically, in this embodiment, the ratio of the roller diameter D2 of the contact portion 21 to the roller diameter D4 of the main body portion 11 is M, and is set to 2≤M≤3. That is, the roller diameter of the contact portion 21 is 2 to 3 times the roller diameter of the main body portion 11, ensuring that the elastic roller 20 has appropriate thickness and elasticity to meet the requirement of applying uniform pressure to the electrode sheet 50 during the coating machine winding process.

[0056] If M is too small, meaning the difference between the roller diameter of the contact portion 21 and the roller diameter of the main body 11 is small, the thickness of the elastic roller 20 will be insufficient. This may lead to easy deformation or damage during long-term use, reducing the durability of the equipment. In addition, an excessively thin elastic layer cannot provide sufficient cushioning, making the electrode 50 susceptible to greater pressure impact during winding, which may cause scratches or wrinkles on the surface of the electrode 50, thus affecting product quality.

[0057] If M is too large, meaning the roller diameter of the contact portion 21 is much larger than the roller diameter of the main body 11, while it can provide stronger cushioning capacity, it may also bring additional adverse effects. For example, an excessively thick elastic layer is prone to large deformation during operation, thus affecting the winding accuracy and potentially causing uneven stress on the electrode sheet 50. In addition, an excessively thick elastic roller 20 will also increase the overall size of the equipment, affecting the compactness of the structure and potentially leading to additional energy consumption.

[0058] Therefore, by controlling M between 2 and 3, this application achieves a good balance between the thickness of the elastic roller 20 and the structural stability, so that the contact part 21 has sufficient elastic buffering capacity and will not affect the normal operation of the coating machine due to excessive deformation, thereby optimizing the winding effect and improving the stability and consistency of the electrode sheet 50 processing.

[0059] In a further optimized version of this utility model, in order to ensure that the pressure roller structure has good mechanical strength and elastic cushioning performance during use, this application has made reasonable selection and optimization of the materials of the mandrel roller 10 and the elastic roller 20. Specifically, in this embodiment, the mandrel roller 10 is made of metal, while the elastic roller 20 is made of rubber.

[0060] As the core support component of the pressure roller, the mandrel roller 10's main function is to provide a stable support structure and transmit driving force. Therefore, the mandrel roller 10 must possess high strength, rigidity, and wear resistance to withstand bending stress, torsional stress, and external loads that may occur during long-term use. Metal materials, due to their excellent mechanical properties such as high strength, high rigidity, and good wear resistance, are an ideal choice for the mandrel roller 10.

[0061] On the other hand, the elastic roller 20 is the part that directly contacts the electrode sheet 50. Its main function is to provide uniform clamping force and to play a buffering and regulating role during the winding process. Compared with metal materials, rubber materials have better elasticity and flexibility, which can effectively absorb external impacts and reduce mechanical damage to the electrode sheet 50 during the clamping process. In addition, the surface friction of rubber material is relatively large, which can improve the stability of the electrode sheet 50 on the pressure roller and reduce the risk of slippage during the winding process.

[0062] By combining a metal mandrel roller 10 with a rubber elastic roller 20, the pressure roller structure of this application ensures overall rigidity while also providing good elastic buffering effect. This allows the electrode 50 to be subjected to force more smoothly and evenly during coating and winding, thereby reducing wrinkles, slippage and other problems, and improving product processing quality and production efficiency.

[0063] The embodiments of this utility model also provide a coating machine, which adopts the above-mentioned optimized pressure roller structure to improve the stability of the coating and winding process and the finished quality of the electrode 50.

[0064] The pressure roller structure employs a combination of a mandrel roller 10 and an elastic roller 20. Compared to the traditional single metal roller design, the pressure roller structure used in this coating machine directly contacts the electrode sheet 50 via the elastic roller 20. This effectively reduces the impact of asynchronous driving components on the two sides of the roller on the electrode sheet 50, thereby improving the uniformity of winding. Furthermore, the axial length of the elastic roller 20 is much smaller than that of the mandrel roller 10, effectively reducing the contact area and concentrating the force on the electrode sheet 50, further optimizing the winding quality.

[0065] In this utility model, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0066] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A press roll structure, characterized by, The application relates to a compression roller structure. The core roller comprises a main body and a mounting part connected with each other, the mounting part is arranged at two ends of the main body and is used for being connected with a driving part of a coating machine. The ratio of the length W1 of the core roller to the length W2 of the elastic roller in the axial direction of the core roller is K, and 1.5<=K<=4. The elastic roller comprises a contact part and a fixing part connected with each other, the fixing part is arranged at the end of the contact part, the ratio of the roller diameter D1 of the fixing part to the roller diameter D2 of the contact part is N, and 0.6<=N<=0.

8.

2. A press roll structure according to claim 1, wherein The number of the elastic rollers is multiple, and the multiple elastic rollers are arranged on the main body in a sleeving mode.

3. A press roll structure according to claim 2, wherein The elastic roller further comprises a connecting part, the number of the contact parts is multiple, the connecting part connects adjacent contact parts, the ratio of the roller diameter D3 of the connecting part to the roller diameter D2 of the contact part is H, and 0.6<=H<=0.

8.

4. A press roll structure according to claim 2, wherein The ratio of the length W3 of the contact part to the length W4 of the connecting part in the axial direction of the elastic roller is L, and 4<=L<=6.

5. A press roll structure according to claim 4, wherein The compression roller structure further comprises a fixing part, the fixing part is arranged in the fixing hole and the positioning hole and is connected with the main body.

6. A press roll structure according to claim 4, wherein The compression roller structure further comprises a fixing part, the fixing part is arranged in the fixing hole and the adjusting groove and is connected with the main body.

7. A press roll structure according to claim 4, wherein The ratio of the roller diameter D2 of the contact part to the roller diameter D4 of the main body is M, and 2<=M<=3.

8. A press roll structure according to any one of claims 2 to 7, characterised in that, The core roller is made of metal, and the elastic roller is made of rubber.

9. A press roll structure according to any one of claims 2 to 7, characterised in that, The application further relates to a compression roller structure comprising any one of the compression roller structures in claims 1-9.

10. A coater characterized by comprising: ​

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