Rolling contact type static elimination device
By installing a rolling contact electrostatic elimination device with graphite rollers on both sides of the film, the problem of static accumulation in the vacuum environment is solved, and the electrostatic elimination is achieved without damaging the film surface. It is suitable for roll-to-roll coating equipment and winding process equipment.
Patent Information
- Application Number
- CN202421826183.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-07-31
AI Technical Summary
In a vacuum environment, the relative friction between the film and the roller leads to static electricity accumulation, affecting the adsorption effect and safety of the film. The existing electrostatic elimination methods are poor in vacuum or damage the film surface.
A rolling contact electrostatic elimination device is designed, and a graphite roller is used to roll and rub with the film. The grounding body is connected to the grounding body through the grounding body and the grounding wire. The graphite roller and the film form a certain angle, providing a flattening force and increasing the electrostatic conduction point.
Effectively eliminate static electricity, reduce damage to the film surface, is suitable for long-term stable operation, is suitable for vacuum roll-to-roll coating equipment and winding process equipment, ensuring safety.
Smart Images
Figure CN223261689U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vacuum coating equipment, in particular to a rolling contact type static elimination device. Background Art
[0002] In roll-to-roll coating equipment and various other process equipment, there is a certain speed difference between the film and the roller, resulting in relative friction between the film and the roller. In many processes, such as vacuum environments, processes requiring roller insulation, and relatively dry process environments, static electricity is more likely to form on the film contact surface. As production time increases, static charge accumulates at the reel end, affecting the adsorption effect between the films, resulting in uneven reeling and, in severe cases, sparking and discharge. This not only affects the stability of product quality but also poses a safety hazard to the working space. In addition, when the charge accumulates to a high level at the reel end and is not effectively released, it can also endanger the safety of personnel during reel changes.
[0003] In modern industry, commonly used static elimination methods include process control, humidification, static eliminators, and static grounding. The best way to eliminate static without damaging the membrane surface is to use non-contact methods, such as static eliminators, which ionize the air to generate plasma wind that neutralizes the charge on the membrane surface, achieving the purpose of eliminating static electricity. However, in a vacuum environment where there is almost no air, this method is obviously not feasible, and in some special processes, ionization cannot be used for neutralization. Therefore, static grounding is more reliable for eliminating static in vacuum environments and is more suitable for special process protection environments.
[0004] A soft-bristle brush is a commonly used contact-type grounding electrode for eliminating static electricity. Its disadvantage is that the material is relatively soft and easily deformed after a long period of use. It cannot ensure adhesion to the film surface during the production process. At the same time, it is a sliding friction. If a hard conductor is directly used to rub against the film, it will damage the film surface.
[0005] Therefore, it is necessary to design an electrostatic elimination device that does not damage the membrane surface and is more suitable for long-term stable operation. Utility Model Content
[0006] In view of the above problems, the utility model provides a rolling contact type static elimination device which has a simple structure, low cost, does not damage the film surface, and has a certain flattening effect on the edge of the film.
[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a rolling contact type static elimination device, the static elimination device is symmetrically installed on both sides of the film, the static elimination device includes a grounding body, a grounding wire and a grounding electrode, the grounding electrode is connected to the grounding body through the grounding wire, the grounding electrode is composed of a guide shaft, a fixed seat, a roller base, a roller guide shaft, and a graphite roller, the mounting plane of the fixed seat is parallel to the end face of the film, the guide shaft is fixedly installed on the fixed seat, the roller base is sleeved on the guide shaft, the roller base is "U"-shaped, and its two arms are respectively placed on the upper and lower sides of the film, and positioning guide holes are respectively opened on the two arms of the roller base, one end of the roller guide shaft is installed in the positioning guide hole, and the other end is connected to the graphite roller, the roller base moves along the guide shaft direction to adjust the distance between the graphite roller and the end face of the film, and can rotate around the guide shaft to adjust the angle between the roller guide shaft and the membrane surface of the film.
[0008] Furthermore, the static elimination device is installed in multiple groups on both sides of the film in sections.
[0009] Furthermore, the fixing seat is fixed to the machine platform at both ends of the film by bolts.
[0010] Furthermore, two positioning guide holes are respectively provided on the two arms of the roller base, and the positioning guide holes are used to adjust the position of the roller guide shaft by loosening or tightening the fastening bolts provided on the side to adjust the film pressing depth of the graphite roller.
[0011] Furthermore, a group of roller guide shafts and graphite rollers are diagonally arranged in the positioning guide holes on the two arms of the roller base.
[0012] Furthermore, the graphite roller is fixed to the roller guide shaft by plugging bolts.
[0013] Furthermore, the graphite rollers symmetrically installed on both sides of the film form an angle of 5° with the center line of the film along the film moving direction.
[0014] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:
[0015] 1. This utility model designs the conductive wheel as a graphite roller, which rolls and rubs against the film surface and has a relatively hard surface. The film guide posture is easy to control, and the contact force between the guide wheel and the base film is controllable. Under the premise of meeting the conductivity, the damage to the film is minimized to the greatest extent. It is more suitable for long-term stable operation and is suitable for roll-to-roll coating equipment and various winding process equipment in a vacuum. It can effectively eliminate the static electricity generated by the friction between the coating edge, the process blank edge and each winding guide roller.
[0016] 2. This utility model has a simple structure and low cost. It is arranged symmetrically in pairs on both sides of the membrane. The graphite rollers form a certain angle with the film, which provides an outward force to the film during the film running process, which helps to flatten the membrane surface. At the same time, multiple groups of this device can be installed in sections on both sides of the film roll to increase the conductive contact points of static charge, thereby achieving the purpose of eliminating static electricity. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0019] Figure 2 It is a schematic diagram of the top structure of the utility model. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to 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 intended to limit the present invention.
[0021] Example
[0022] refer to Figure 1 、 Figure 2 , a rolling contact type static elimination device, the static elimination device is symmetrically installed in sections on both sides of the film 10 N groups of the device, the static elimination device includes a grounding body 1, a grounding wire 2 and a grounding electrode, the grounding electrode is connected to the grounding body 1 through the grounding wire 2, the grounding electrode is composed of a guide shaft 3, a fixed seat 4, a roller base 6, a roller guide shaft 7, and a graphite roller 8. The fixed seat 4 is fixed to the machine at both ends of the film by bolts 5. The mounting plane of the fixed seat 4 is parallel to the end face of the film 10. The guide shaft 3 is fixedly mounted on the fixed seat On the seat 4, the roller base 6 is sleeved on the guide shaft 3, the roller base 6 is in a "U" shape, and its two arms are respectively placed on the upper and lower sides of the film 10, and positioning guide holes 11 are respectively opened on the two arms of the roller base 6. One end of the roller guide shaft 7 is installed in the positioning guide hole 11, and the other end is connected to the graphite roller 8. The roller base 6 moves along the direction of the guide shaft 3 to adjust the distance between the graphite roller 8 and the end face of the film 10, and can be rotated around the guide shaft 3 to adjust the angle between the roller guide shaft 7 and the film surface of the film 10 to ensure that the guide shaft 7 is perpendicular to the film surface.
[0023] There are two corresponding positioning guide holes 11 on the two arms of the roller base 6. The positioning guide holes 11 are used to adjust the position of the roller guide shaft 7 by loosening or tightening the fastening bolts 12 provided on the side to adjust the film pressing depth of the graphite roller 8.
[0024] A group of roller guide shafts 7 and graphite rollers 8 are diagonally arranged in the positioning guide holes 11 on the two arms of the roller base 6 , and the graphite rollers 8 are fixed on the roller guide shafts 7 by plug bolts 9 .
[0025] The graphite rollers 8 symmetrically mounted on both sides of the film 10 form an angle of 5° with the center line of the film 10 along the film moving direction.
[0026] The conductive wheel is designed as a graphite roller, which rolls and rubs against the film surface and has a hard surface. The film guide posture is easy to control, and the contact force between the guide wheel and the base film is controllable. The damage to the film is minimized to the greatest extent under the premise of meeting the conductivity. It is more suitable for long-term stable operation and is suitable for roll-to-roll coating equipment and various winding process equipment in a vacuum. It can effectively eliminate static electricity generated by friction between the coating edge, the process blank edge and each winding guide roller; the structure is simple and the cost is low. The rollers are symmetrically arranged in pairs on both sides of the film. The graphite rollers form a certain angle with the film, which provides an outward force to the film during the film movement process, which helps to flatten the film surface. At the same time, multiple groups of the device can be installed in sections on both sides of the film roll to increase the conductive contact points of static charge, thereby achieving the purpose of eliminating static electricity.
[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A rolling contact type static eliminator, characterized in that: The static elimination device is symmetrically installed on both sides of the film, and the static elimination device includes a grounding body, a grounding wire and a grounding electrode. The grounding electrode is connected to the grounding body through the grounding wire. The grounding electrode is composed of a guide shaft, a fixed seat, a roller base, a roller guide shaft, and a graphite roller. The mounting plane of the fixed seat is parallel to the end face of the film. The guide shaft is fixedly installed on the fixed seat, and the roller base is sleeved on the guide shaft. The roller base is "U"-shaped, and its two arms are respectively placed on the upper and lower sides of the film. Positioning guide holes are respectively opened on the two arms of the roller base. One end of the roller guide shaft is installed in the positioning guide hole, and the other end is connected to the graphite roller. The roller base moves along the guide shaft direction to adjust the distance between the graphite roller and the end face of the film, and can rotate around the guide shaft to adjust the angle between the roller guide shaft and the film surface.
2. The rolling contact type static eliminator according to claim 1, characterized in that: The static elimination device is installed in multiple groups on both sides of the film in sections.
3. The rolling contact type static eliminator according to claim 1, characterized in that: The fixing seat is fixed to the machine platform at both ends of the film by bolts.
4. The rolling contact type static eliminator according to claim 1, characterized in that: There are two corresponding positioning guide holes on the two arms of the roller base. The positioning guide holes are used to adjust the position of the roller guide shaft by loosening or tightening the fastening bolts arranged on the side to adjust the film pressing depth of the graphite roller.
5. The rolling contact type static eliminator according to claim 4, characterized in that: A group of roller guide shafts and graphite rollers are diagonally arranged in the positioning guide holes on the two arms of the roller base.
6. The rolling contact type static eliminator according to claim 1, characterized in that: The graphite roller is fixed on the roller guide shaft by plugging bolts.
7. The rolling contact type static eliminator according to claim 1, characterized in that: The graphite rollers symmetrically mounted on both sides of the film form an angle of 5° with the center line of the film along the film moving direction.