Coating passing roller and vacuum coating equipment

Abstract

The utility model discloses a coating passing roller and vacuum coating equipment in the technical field of conductive film manufacturing, the coating passing roller comprises a roller shaft, the outer side of the roller shaft is sleeved with a roller sleeve, and an adjusting part is arranged between the roller sleeve and the roller shaft, so that the roller sleeve can rotate relative to the roller shaft. The utility model solves the problem that the rollers in the existing vacuum coating equipment are not synchronous and the film is easily damaged, and can ensure that the axis and the surface of the coating passing roller can slightly rotate, namely the coating passing roller can adaptively carry out fine adjustment on the rotating speed according to the film running speed of the conductive film, so that the film running speed of the conductive film is greatly improved. The rotating speed of the multiple different coating rollers can be synchronous with the rotating speed of the conductive film, friction between the coating rollers and the film is reduced, and damage to the surface of the film due to the fact that the rotating speed of the coating rollers and the film moving speed of the conductive film are different is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of conductive film manufacturing, in particular to a coating roller and vacuum coating equipment. Background Art

[0002] Conductive film is a polymer material with copper or aluminum layers plated on the top and bottom surfaces of substrates such as PET and PP. It has a sandwich structure and is also called a composite thin film current collector. It is a type of material with many good properties and is widely used in lithium-ion batteries, mainly as a battery current collector in lithium-ion batteries.

[0003] Conductive film can be produced by vacuum coating equipment. There are multiple rollers inside the vacuum coating equipment to form a path for the conductive film to be transported. When the equipment is running, the multiple rollers rotate synchronously, allowing the conductive film to be unrolled, coated, and reeled in the vacuum coating equipment.

[0004] However, different rollers in vacuum coating equipment are usually driven by multiple different motors. Even if the speeds of different motors are set to the same, there may still be slight differences in the linear speeds of the specific rollers. The difference in the linear speeds of the rollers will cause the speed of the film to be different from the linear speed of the roller surface when the roller contacts the film, which will cause friction between the roller surface and the film, and may cause damage to the film surface.

[0005] The above defects need to be solved urgently. Utility Model Content

[0006] In order to solve the problem that rollers in the existing vacuum coating equipment are not synchronized and easily cause damage to the film, the utility model provides a coating roller and a vacuum coating equipment.

[0007] The technical solution of the utility model is as follows:

[0008] A coating roller comprises a roller shaft, wherein a roller sleeve is sleeved on the outer side of the roller shaft, and an adjusting component is arranged between the roller sleeve and the roller shaft so that the roller sleeve can rotate relative to the roller shaft.

[0009] According to the above-mentioned solution of the utility model, there are two adjusting components, and the two adjusting components are respectively arranged at two ends of the roller sleeve.

[0010] According to the utility model of the above solution, the adjusting component is a bearing.

[0011] The utility model according to the above scheme also includes two clamping assemblies sleeved on the roller shaft, and one end of the two clamping assemblies is respectively connected to the inner ring of the corresponding bearing.

[0012] According to the above-mentioned solution of the utility model, the clamping assembly includes an extrusion part and a locking part which are connected to each other, the extrusion part abuts against the inner ring of the bearing, and the locking part is detachably connected to the roller shaft.

[0013] According to the utility model of the above scheme, the extrusion part is trumpet-shaped, the end of the extrusion part with a smaller diameter abuts against the inner ring of the bearing, and the end of the extrusion part with a larger diameter is connected to the locking part.

[0014] According to the above-mentioned solution of the utility model, the locking part is a nut, a thread is provided at a corresponding position on the roller shaft, and the locking part is threadedly connected to the roller shaft.

[0015] According to the above-mentioned solution of the utility model, at least two locking parts are provided.

[0016] According to the utility model of the above solution, a pair of external bearings are also arranged on the roller shaft.

[0017] A vacuum coating device comprises the above-mentioned coating roller.

[0018] The utility model according to the above scheme has the following beneficial effects:

[0019] In the above-mentioned coating roller, a roller sleeve is provided on the outer side of the roller shaft, and an adjusting component is provided between the roller sleeve and the roller shaft, so that the roller sleeve can rotate relative to the roller shaft, so that a slight rotation can occur between the axis of the coating roller and its surface, that is, the coating roller can adaptively fine-tune the rotation speed according to the film traveling speed of the conductive film, so that the rotation speed of multiple different coating rollers can be synchronized with the rotation speed of the conductive film, thereby reducing the friction between the coating roller and the film, and avoiding damage to the film surface caused by the different rotation speed of the coating roller and the film traveling speed of the conductive film. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a cross-sectional view of the utility model.

[0023] In the figure, 1, roller shaft; 2, roller sleeve; 3, adjusting component; 31, bearing; 4, clamping assembly; 41, extrusion part; 42, locking part; 5, external bearing. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] The utility model provides a vacuum coating device, wherein a plurality of coating rollers are arranged inside the vacuum coating device to form a path for conveying a conductive film. When the vacuum coating device is running, the plurality of rollers rotate synchronously, so that the conductive film can be unwound, coated and rewound in the vacuum coating device.

[0026] like Figure 1 , Figure 2 As shown, in this embodiment, the coating roller includes a roller shaft 1, and a roller sleeve 2 is sleeved on the outer side of the roller shaft 1. The roller sleeve 2 is in contact with the conductive film, and an adjustment component 3 is arranged between the roller sleeve 2 and the roller shaft 1, so that the roller sleeve 2 can rotate relative to the roller shaft 1. The motor drives the roller shaft 1 to rotate, and the roller shaft 1 drives the roller sleeve 2 to rotate through the adjustment component 3. When the speed of the roller shaft 1 is consistent with that of the roller sleeve 2, the roller sleeve 2 does not rotate relative to the roller shaft 1. When the film-feeding speed of the conductive film is not synchronized with the speed of the roller sleeve 2, the roller sleeve 2 rotates relative to the roller shaft 1 through the adjustment component 3 to adjust the speed difference, thereby ensuring the stability and continuity of the conductive film during the transmission process, and improving the production efficiency and quality.

[0027] In this embodiment, the adjusting components 3 are designed to be two, and the two adjusting components 3 are respectively arranged at the two ends of the roller sleeve 2, so as to facilitate the rotation of the coating roller, so that the rotation of the coating roller is more stable. When the film-feeding speed of the conductive film changes, the roller sleeve 2 can be fine-tuned at both ends according to the actual situation, so as to ensure the stability of the overall transmission. In addition, since the adjusting components 3 are located at both ends of the roller sleeve 2, the pressure between the roller sleeve 2 and the roller shaft 1 can be dispersed, and the stress concentration can be reduced, thereby reducing the degree of wear of the roller sleeve 2 and the roller shaft 1, which can not only extend the service life of the equipment, but also help to maintain the continuity and stability of production. In addition, since the adjusting components 3 are located at both ends of the roller sleeve 2, it is more convenient to operate when repairing or replacing parts, which can reduce downtime and help improve the maintenance efficiency of the equipment.

[0028] like Figure 2As shown, in this embodiment, the adjusting component 3 can be designed as a bearing 31, the inner ring of the bearing 31 is sleeved on the outer side of the roller shaft 1, the inner ring of the bearing 31 is connected to the roller sleeve 2, and a ball is arranged between the inner ring of the bearing 31 and the outer ring of the bearing 31. Of course, in actual design, the structure of the adjusting component 3 can be designed according to actual conditions. In addition, a clamping assembly 4 is also sleeved on the roller shaft 1, and one end of the two clamping assemblies 4 is respectively connected to the inner ring of the corresponding bearing 31, which can ensure that the clamping assembly 4 and the bearing 31 are closely matched, effectively transmit torque and prevent relative sliding between the bearing 31 and the roller shaft 1. The clamping assembly 4 clamps the bearing 31 and the roller sleeve 2 on the roller shaft 1 to prevent sliding between the bearing 31 and the roller shaft 1, thereby preventing the roller sleeve 2 from moving in the axial direction and shaking the roller sleeve 2.

[0029] like Figure 1 , Figure 2 As shown, in this embodiment, the clamping assembly 4 includes a pressing part 41 and a locking part 42. One end of the pressing part 41 is connected to the locking part 42, and the other end of the pressing part 41 abuts against the inner ring of the bearing 31, so that the pressing part 41 can apply sufficient pressure to the inner ring of the bearing 31 to ensure the tight fit between the bearing 31 and the roller shaft 1 to prevent sliding and displacement. The two pressing parts 41 press the inner rings of the two bearings 31 respectively, further enhancing the stability of the bearing 31 on the roller shaft 1, so that the position of the clamping assembly 4 on the roller shaft 1 is fixed, thereby fixing the position of the bearing 31 and the roller sleeve 2 on the roller shaft 1. In addition, the locking part 42 is detachably connected to the roller shaft 1, which facilitates the installation and removal of the clamping assembly 4. When the bearing 31 needs to be replaced or maintained, the locking part 42 can be easily removed without disassembling the entire roller shaft 1, which greatly shortens the maintenance time and improves the maintenance efficiency of the equipment.

[0030] like Figure 1 , Figure 2As shown, in this embodiment, the extrusion portion 41 is trumpet-shaped, which not only increases the contact area between the extrusion portion 41 and the inner ring of the bearing 31, but also increases the clamping force. The end of the extrusion portion 41 close to the bearing 31 has a small diameter, and the end of the extrusion portion 41 with a small diameter abuts against the inner ring of the bearing 31 to ensure close contact with the inner ring of the bearing 31. When the clamping assembly 4 applies pressure, the small diameter end of the extrusion portion 41 can abut against the inner ring of the bearing 31, thereby effectively squeezing the inner ring of the bearing 31, which can prevent the bearing 31 from sliding on the roller shaft 1 and ensure its stable operation. In addition, the end of the extrusion portion 41 with a small diameter only abuts against the inner ring of the bearing 31, and does not contact the ball of the bearing 31, the outer ring of the bearing 31 and the roller sleeve 2. In this way, the clamping assembly 4 can be prevented from interfering with the relative rotation between the roller sleeve 2 and the roller shaft 1. In addition, the end of the extrusion part 41 away from the bearing 31 has a larger diameter, and the end of the extrusion part 41 with a larger diameter is connected to the locking part 42. Due to the larger contact surface, a more stable connection can be provided. The larger contact surface allows the extrusion part 41 to better contact the locking part 42, thereby enhancing the connection force between the two. At the same time, this also increases the overall strength of the extrusion part 41 and reduces the possibility of deformation when it is subjected to pressure.

[0031] In this embodiment, the locking part 42 is a nut, and a thread is provided at a corresponding position on the roller shaft 1. The locking part 42 is threadedly connected to the roller shaft 1, and the locking part 42 can be fixed on the roller shaft 1. The design of the nut enables the clamping assembly 4 to be fixed on the roller shaft 1 by rotating or tightening. It is not only simple and easy to operate, but also provides sufficient clamping force to ensure that the clamping assembly 4 will not slip on the roller shaft 1, ensure the position of the clamping assembly 4 is fixed, and further enhance the stability of the bearing 31 and the roller sleeve 2 on the roller shaft 1. In addition, at least two locking parts 42 are provided, and the locking parts 42 can be designed to be two, three, four, etc. In actual design, the number of locking parts 42 can be designed according to actual needs. The design of multiple locking parts 42 can provide a more uniform and stable clamping force distribution, further enhancing the overall stability of the clamping assembly 4.

[0032] like Figure 1 , Figure 2 As shown, in this embodiment, a pair of outer bearings 5 ​​are also provided on the roller shaft 1, and the outer bearings 5 ​​are used to be installed in the cavity wall, so that when used in the vacuum coating equipment, one end of the coating roller connected to the motor extends to the outside of the chamber, which is convenient for the installation and connection of the motor, and also makes the equipment layout more compact and reasonable. By installing the outer bearings 5 ​​in the cavity wall, the coating roller can run more stably, reducing the error caused by vibration or offset, thereby improving production efficiency and product quality. In addition, this design also makes the equipment easier to maintain and operate, providing greater convenience for the production process.

[0033] In this embodiment, the length of the roller 1 is 2299 mm, and the diameter of the roller sleeve 2 is 80 mm. Of course, in actual design, the length of the roller 1 and the diameter of the roller sleeve 2 can be designed according to actual conditions.

[0034] In this embodiment, a roller sleeve 2 is provided on the outer side of the roller shaft 1, and a bearing 31 is provided between the roller sleeve 2 and the roller shaft 1, so that the roller sleeve 2 can rotate relative to the roller shaft 1, thereby allowing a slight rotation to occur between the axis of the coating roller and its surface, that is, the coating roller can be driven to rotate by a motor in the vacuum coating equipment, and can also adaptively adjust the rotation speed according to the film traveling speed of the conductive film, so that the rotation speed of multiple different coating rollers can be synchronized with the film traveling speed of the conductive film, thereby reducing the friction between the coating roller and the film, and avoiding damage to the film surface caused by the different rotation speeds of the coating roller and the film traveling speed of the conductive film.

[0035] It should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the application product is usually placed when used, or is the orientation or position relationship commonly understood by technical personnel in this field, or is the orientation or position relationship in which the application product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0036] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0037] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A coating roller, characterized in that: It comprises a roller shaft, the outer side of the roller shaft is provided with a roller sleeve, and an adjusting component is provided between the roller sleeve and the roller shaft, so that the roller sleeve can rotate relative to the roller shaft; There are two adjusting components, which are respectively arranged at two ends of the roller sleeve; the adjusting components are bearings; It also includes two clamping assemblies sleeved on the roller shaft, and one end of the two clamping assemblies is respectively connected to the inner ring of the corresponding bearing.

2. The coating roller according to claim 1, characterized in that: The clamping assembly comprises an extrusion portion and a locking portion which are connected to each other. The extrusion portion abuts against the inner ring of the bearing, and the locking portion is detachably connected to the roller shaft.

3. The coating roller according to claim 2, characterized in that: The extrusion part is trumpet-shaped, an end of the extrusion part with a smaller diameter abuts against the inner ring of the bearing, and an end of the extrusion part with a larger diameter is connected to the locking part.

4. The coating roller according to claim 2, characterized in that: The locking portion is a nut, a thread is provided at a corresponding position on the roller shaft, and the locking portion is threadedly connected to the roller shaft.

5. The coating roller according to claim 2, characterized in that: The number of the locking parts is at least two.

6. The coating roller according to any one of claims 1 to 5, characterized in that: A pair of external bearings are also arranged on the roller shaft.

7. A vacuum coating device, characterized in that: It comprises a coating roller as described in any one of claims 1 to 6.

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