Roller structure

Abstract

The utility model discloses a roller structure which comprises a roller, a first bearing fixing seat, a second bearing fixing seat, a first cylindrical roller bearing, a second cylindrical roller bearing, a first bearing set and a second bearing set. The first bearing group and the second bearing group are angular contact bearings or deep groove bearings; inner rings of the first cylindrical roller bearing and the first bearing pack are fixedly connected with one end of the roller, and outer rings of the first cylindrical roller bearing and the first bearing pack are fixedly connected with the first bearing fixing seat; the inner rings of the second cylindrical roller bearing and the second bearing group are fixedly connected with the other end of the roller, and the outer rings of the second cylindrical roller bearing and the second bearing group are fixedly connected with the first bearing fixing seat. The first cylindrical roller bearing and the second cylindrical roller bearing make contact with the roller line, the bearing capacity is large, and radial loads are mainly borne. The angular contact bearing can bear a radial load and a one-way axial load, and the deep groove ball bearing can bear a radial load and a two-way axial load, so that the roll surface runout is smaller.

Description

Technical Field

[0001] This utility model relates to the technical field of thin film manufacturing equipment, specifically to a roller structure. Background Technology

[0002] Dry electrode film is a technology that produces thin film materials using physical methods. A mixed powder slurry is pressed into a thin film between several sets of rollers, and then transferred to the surface of a substrate to form a dry electrode film. However, problems such as film layer inhomogeneity and wavy lines on the film surface exist during the preparation of dry electrode films. These problems can affect the quality of the dry electrode film and may even render it unusable.

[0003] Currently, tapered roller bearings are commonly used in dry electrode rollers. After a period of use, tapered roller bearings are prone to wear and excessive temperature, which can lead to increased roller surface runout, resulting in uneven film layer and wavy patterns on the film surface. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a roller structure with small roller surface runout.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A roller structure includes a roller, a first bearing mounting base, a second bearing mounting base, a first cylindrical roller bearing, a second cylindrical roller bearing, a first bearing assembly, and a second bearing assembly;

[0007] The first bearing assembly and the second bearing assembly are angular contact bearings or deep groove bearings;

[0008] The inner rings of the first cylindrical roller bearing and the first bearing assembly are both fixedly connected to one end of the roller, and the outer rings of the first cylindrical roller bearing and the first bearing assembly are both fixedly connected to the first bearing mounting seat.

[0009] The inner rings of the second cylindrical roller bearing and the second bearing assembly are both fixedly connected to the other end of the roller, and the outer rings of the second cylindrical roller bearing and the second bearing assembly are both fixedly connected to the first bearing mounting seat.

[0010] In the roller structure described above, the first bearing assembly is disposed adjacent to the first cylindrical roller bearing, and the first bearing assembly is located on the side away from the second bearing mounting base; the second bearing assembly is disposed adjacent to the second cylindrical roller bearing, and the second bearing assembly is located on the side away from the first bearing mounting base.

[0011] As described above, the first bearing assembly and the second bearing assembly have the same structure; the first bearing assembly includes two or more of the angular contact bearings or the deep groove bearings.

[0012] The roller structure described above also includes a rotary joint, one end of which passes through the first bearing mounting seat and is rotatably connected to the rotary joint. The roller is provided with a heat-conducting channel for holding heat-conducting liquid, and the rotary joint is used to connect to an external heater to supply the heat-conducting liquid into the heat-conducting channel.

[0013] In the roller structure described above, the heat-conducting channels are honeycomb-shaped.

[0014] As described above, the first bearing mounting base and the second bearing mounting base have the same structure; the first bearing mounting base is provided with a cooling channel for holding cooling liquid, which is used to cool the first cylindrical roller bearing and the first bearing assembly.

[0015] The roller structure described above also includes a rotary drive assembly, with the other end of the roller passing through the second bearing mounting seat and rotatably connected to the rotary drive assembly.

[0016] The roller structure described above is made of 9Cr3Mo.

[0017] As described above, the outer surface of the roller is plated with a chromium layer, and the chromium layer is polished.

[0018] In the roller structure described above, the end of the roller near the second bearing mounting seat is the fixed end, and the end of the roller near the first bearing mounting seat is the floating end.

[0019] The beneficial effects of this utility model are:

[0020] In this invention, the first cylindrical roller bearing and the second cylindrical roller bearing are in line contact with the roller, which has a large load-bearing capacity and mainly bears radial loads; the angular contact bearing can bear radial loads and unidirectional axial loads, and the deep groove ball bearing can bear radial loads and bidirectional axial loads. Therefore, compared with using cylindrical roller bearings alone, the roller surface runout in this invention is smaller, which can improve the uniformity of the film layer and reduce the probability of wavy patterns appearing on the film surface. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the roller structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the roller structure in this embodiment 1;

[0024] Figure 3 yes Figure 2 Enlarged view of the structure of section A in the middle;

[0025] Figure 4 This is a cross-sectional view of the roller structure in Embodiment 2;

[0026] Figure 5 yes Figure 4 Enlarged view of the structure of section B in the middle;

[0027] The attached figures are labeled as follows:

[0028] 1-Roller; 11-Heat conduction channel;

[0029] 2-First bearing mounting base; 21-Cooling flow channel;

[0030] 3-Second bearing mounting base;

[0031] 4-First cylindrical roller bearing;

[0032] 5-Second cylindrical roller bearing;

[0033] 61-First bearing group; 612-Angular contact bearing; 611-Deep groove bearing; 62-Second bearing group;

[0034] 7-Rotary joint;

[0035] 8-Rotary drive assembly; 81-Coupling; 82-Planetary reducer; 83-Servo motor. Detailed Implementation

[0036] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0037] Reference Figures 1 to 5 A roller structure includes a roller 1, a first bearing mounting base 2, a second bearing mounting base 3, a first cylindrical roller bearing 4, a second cylindrical roller bearing 5, a first bearing assembly 61, and a second bearing assembly 62.

[0038] Wherein, the first bearing group 61 and the second bearing group 62 are angular contact bearings 612 or deep groove bearings 611;

[0039] The inner rings of the first cylindrical roller bearing 4 and the first bearing assembly 61 are both fixedly connected to one end of the roller 1, and the outer rings of the first cylindrical roller bearing 4 and the first bearing assembly 61 are both fixedly connected to the first bearing mounting seat 2.

[0040] The inner rings of the second cylindrical roller bearing 5 and the second bearing assembly 62 are both fixedly connected to the other end of the roller 1, and the outer rings of the second cylindrical roller bearing 5 and the second bearing assembly 62 are both fixedly connected to the second bearing mounting base 3.

[0041] The first cylindrical roller bearing 4 and the second cylindrical roller bearing 5 are in line contact with roller 1, providing high load-bearing capacity and primarily bearing radial loads. The angular contact bearing 612 can withstand radial loads and unidirectional axial loads, while the deep groove ball bearing 611 can withstand radial loads and bidirectional axial loads. Their combined use improves the stability of the roller structure and reduces roller surface runout. When using tapered roller bearings alone, the roller surface runout is 10µm; in this embodiment, the runout is 1-3µm. Therefore, compared to using tapered roller bearings alone, the roller structure in this embodiment exhibits less roller surface runout, improving film uniformity and reducing the probability of wavy patterns on the film surface.

[0042] The above roller structure has two embodiments:

[0043] Example 1: The inner rings of the first cylindrical roller bearing 4 and the deep groove bearing 611 are both fixedly connected to one end of the roller 1, and the outer rings of the first cylindrical roller bearing 4 and the deep groove bearing 611 are both fixedly connected to the first bearing mounting seat 2; the inner rings of the second cylindrical roller bearing 5 and the deep groove bearing 611 are both fixedly connected to the other end of the roller 1, and the outer rings of the second cylindrical roller bearing 5 and the deep groove bearing 611 are both fixedly connected to the first bearing mounting seat 2.

[0044] Example 2: The inner rings of the first cylindrical roller bearing 4 and the angular contact bearing 612 are both fixedly connected to one end of the roller 1, and the outer rings of the first cylindrical roller bearing 4 and the angular contact bearing 612 are both fixedly connected to the first bearing mounting seat 2; the inner rings of the second cylindrical roller bearing 5 and the angular contact bearing 612 are both fixedly connected to the other end of the roller 1, and the outer rings of the second cylindrical roller bearing 5 and the angular contact bearing 612 are both fixedly connected to the first bearing mounting seat 2.

[0045] In one embodiment, the first bearing assembly 61 is disposed adjacent to the first cylindrical roller bearing 4, and the first bearing assembly 61 is located on the side away from the second bearing mounting base 3; the second bearing assembly 62 is disposed adjacent to the second cylindrical roller bearing 5, and the second bearing assembly 62 is located on the side away from the first bearing mounting base 2, ensuring a tight fit between the first bearing assembly 61 and the first cylindrical roller bearing 4, and between the second bearing assembly 62 and the second cylindrical roller bearing 5, thereby improving the overall stability and load-bearing capacity of the roller structure and further reducing roller surface runout.

[0046] Reference Figures 2 to 5 In one embodiment, the first bearing group 61 and the second bearing group 62 have the same structure; the first bearing group 61 includes two or more of the angular contact bearings 612 or the deep groove bearings 611, which further improves the overall stability and load-bearing capacity of the roller structure and further reduces roller surface runout.

[0047] Reference Figure 1 , Figure 2 as well as Figure 4 In one embodiment, a rotary joint 7 is further included. One end of the roller 1 passes through the first bearing mounting seat 2 and is rotatably connected to the rotary joint 7. The roller 1 is provided with a heat-conducting channel 11, which is used to hold heat-conducting liquid. The rotary joint 7 is used to connect to an external heater to supply the heat-conducting liquid into the heat-conducting channel 11. The rotary joint 7 ensures that the heat-conducting liquid in the heat-conducting channel 11 will not flow out when the roller 1 rotates, thus affecting the heating of the roller 1. In this embodiment, when the roller structure is in use, the heat-conducting liquid is loaded into the heat-conducting channel 11. When the mixed powder slurry is rolled into a film by the roller structure, the heat-conducting liquid helps to maintain the surface temperature of the roller 1, reduces the condensation of the powder slurry due to cooling, improves the adhesion between the roller 1 and the film surface, and reduces the impact on the quality of the film.

[0048] Specifically, the heat-conducting liquid is circulating heat-conducting oil.

[0049] Specifically, the roller 1 is made of metal material, which further improves the heat transfer efficiency of the roller 1.

[0050] Specifically, the heat-conducting channels 11 are honeycomb-shaped, meaning that the heat-conducting channels 11 inside the roller 1 are interconnected in a multi-way manner. When the heat-conducting liquid heats the roller 1, the surface temperature uniformity of the roller 1 can reach ±0.5℃, and the highest roller surface temperature can reach 150℃. After improving the uniformity of the roller surface temperature, the adhesion between the roller surface and the film surface is further increased, thereby improving the film quality.

[0051] Reference Figures 2 to 5In one embodiment, the first bearing mounting base 2 and the second bearing mounting base 3 have the same structure; the first bearing mounting base 2 is provided with a cooling channel 21, which is used to hold cooling liquid. The cooling liquid is used to cool the first cylindrical roller bearing 4 and the first bearing assembly 61, so as to extend the service life of the first cylindrical roller bearing 4, the second cylindrical roller bearing 5, the first bearing assembly 61 and the second bearing assembly 62, and reduce the probability of premature bearing failure due to excessive temperature.

[0052] In one embodiment, a rotary drive assembly 8 is further included, with the other end of the roller 1 passing through the second bearing mounting seat 3 and rotatably connected to the rotary drive assembly 8. The rotary drive assembly 8 serves as a power source, driving the roller 1 to rotate, thereby crushing the powder slurry into a film.

[0053] Specifically, the rotary drive assembly 8 includes a coupling 81, a planetary reducer 82, and a servo motor 83; the coupling 81 is connected to the roller 1, and the planetary reducer 82 and the servo motor 83 are connected to the roller 1 through the coupling 81 to transmit power to the roller 1.

[0054] In one embodiment, the roller 1 is made of 9Cr3Mo material to improve the hardness and wear resistance of the roller 1, further improve the uniformity of the film layer and reduce the probability of wavy lines appearing on the film surface.

[0055] In one embodiment, the outer surface of the roller 1 is plated with a chromium layer, and the chromium layer is polished. The chromium layer has extremely high hardness and wear resistance, which can extend the service life of the roller. The polishing treatment of the chromium layer can reduce the micro-protrusions on the surface of the roller 1, improve the smoothness of the roller 1 surface, and thus further improve the uniformity of the film layer.

[0056] Reference Figure 1 In any of the above embodiments, the end of the roller 1 closest to the second bearing mounting base 3 is the fixed end, and the end of the roller 1 closest to the first bearing mounting base 2 is the floating end. Allowing the roller 1 to move axially to a certain extent helps compensate for thermal expansion caused by temperature changes and prevents thermal expansion of the first cylindrical roller bearing 4, the second cylindrical roller bearing 5, the first bearing assembly 61, and the second bearing assembly 62.

[0057] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A roller structure, characterized in that: It includes a roller (1), a first bearing mounting base (2), a second bearing mounting base (3), a first cylindrical roller bearing (4), a second cylindrical roller bearing (5), a first bearing assembly (61), and a second bearing assembly (62); Wherein, the first bearing group (61) and the second bearing group (62) are angular contact bearings (612) or deep groove bearings (611); The inner rings of the first cylindrical roller bearing (4) and the first bearing assembly (61) are fixedly connected to one end of the roller (1), and the outer rings of the first cylindrical roller bearing (4) and the first bearing assembly (61) are fixedly connected to the first bearing mounting base (2). The inner rings of the second cylindrical roller bearing (5) and the second bearing assembly (62) are fixedly connected to the other end of the roller (1), and the outer rings of the second cylindrical roller bearing (5) and the second bearing assembly (62) are fixedly connected to the first bearing mounting base (2).

2. The roller structure as described in claim 1, characterized in that: The first bearing assembly (61) is disposed adjacent to the first cylindrical roller bearing (4), and the first bearing assembly (61) is located on the side away from the second bearing mounting base (3); the second bearing assembly (62) is disposed adjacent to the second cylindrical roller bearing (5), and the second bearing assembly (62) is located on the side away from the first bearing mounting base (2).

3. The roller structure as described in claim 1, characterized in that: The first bearing assembly (61) and the second bearing assembly (62) have the same structure; the first bearing assembly (61) includes two or more of the angular contact bearings (612) or the deep groove bearings (611).

4. The roller structure as described in claim 1, characterized in that: It also includes a rotary joint (7), one end of the roller (1) passes through the first bearing fixing seat (2) and is rotatably connected to the rotary joint (7). The roller (1) is provided with a heat-conducting channel (11), which is used to hold heat-conducting liquid. The rotary joint (7) is used to connect an external heater and supply the heat-conducting liquid to the heat-conducting channel (11).

5. The roller structure as described in claim 4, characterized in that: The heat-conducting channel (11) is honeycomb-shaped.

6. The roller structure as described in claim 1, characterized in that: The first bearing mounting base (2) and the second bearing mounting base (3) have the same structure; the first bearing mounting base (2) is provided with a cooling channel (21), which is used to hold cooling liquid, and the cooling liquid is used to cool the first cylindrical roller bearing (4) and the first bearing assembly (61).

7. The roller structure as described in claim 1, characterized in that: It also includes a rotary drive assembly (8), the other end of which passes through the second bearing mounting base (3) and is rotatably connected to the rotary drive assembly (8).

8. The roller structure as described in claim 1, characterized in that: The roller (1) is composed of 9Cr3 Made of Mo material.

9. The roller structure as described in claim 1, characterized in that: The outer surface of the roller (1) is plated with a chromium layer and the chromium layer is polished.

10. The roller structure according to any one of claims 1-9, characterized in that: The end of the roller (1) near the second bearing fixing seat (3) is the fixed end, and the end of the roller (1) near the first bearing fixing seat (2) is the floating end.

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