Laminating film tensioning device

Abstract

The utility model relates to a film covering tensioning device which comprises a film covering support and two inflatable bearing seats arranged on the film covering support, an inflatable shaft used for limiting a rolled film is arranged between the two inflatable bearing seats, and a magnetic powder brake is arranged at the transmission end of the inflatable shaft. The magnetic powder brake is controlled by a magnetic powder brake controller to adjust braking force. The device is simple in structure and reasonable in design, uniform stress of a film is achieved through expansion and contraction of the inflatable shaft to limit the rolled film, the film is not prone to wrinkling in the film laminating process, the magnetic powder brake controller controls the magnetic powder brake to apply reverse braking force to the inflatable shaft, the voltage of the magnetic powder brake controller is adjusted according to the viscosity and production speed of different films, and the film laminating efficiency is improved. According to the film laminating device, the braking force is adjusted through the magnetic powder brake and the tension controller, the film laminating requirements of different aluminum coils are met, and the universality is high.

Description

Technical Field

[0001] The utility model relates to a film laminating tensioning device. Background Art

[0002] In order to protect the aluminum strip, a laminating machine is used to coat the surface of the aluminum strip. In the prior art, the laminating equipment generally fixes the rolled film on the rotating shaft through a wedge-shaped fixture, and then rotates the film through a guide roller to convey it to the surface of the moving aluminum strip and presses the film on the aluminum strip through a pressure roller. However, since the types of laminations required for aluminum strips of different products are different, different types of films have different viscosities and cannot be coated according to a single braking torque requirement. The width of the film is also different, so it is impossible to meet different lamination requirements. Since the film viscosity of each aluminum coil coating is different, as the coil production speed increases, the tension of the film is inconsistent, wrinkles are easily generated during lamination or lamination is difficult, resulting in poor lamination quality. Utility Model Content

[0003] The utility model improves the above-mentioned problem, that is, the technical problem to be solved by the utility model is to provide a laminating tensioning device, which has a simple structure and is easy to use, and is conducive to improving the laminating quality.

[0004] The utility model is constructed as follows: it includes a film coating support and two pneumatic bearing seats arranged on the film coating support, an pneumatic shaft for limiting the rolled film is arranged between the two pneumatic bearing seats, a magnetic powder brake is arranged at the transmission end of the pneumatic shaft, and the magnetic powder brake is controlled by a magnetic powder brake controller to adjust the braking force.

[0005] Furthermore, a sliding block is provided below the pneumatic bearing seat, guide rails are provided on both sides above the coating support, and a sliding groove for cooperating with the guide rail is provided below the sliding block.

[0006] Furthermore, limit blocks are provided on both sides of the guide rail.

[0007] Furthermore, an adjusting screw is arranged on the outside of one of the pneumatic bearing seats, an adjusting handle is arranged on the outer end of the adjusting screw, the inner end of the adjusting screw passes through a threaded hole arranged at the lower part of the pneumatic bearing seat and cooperates with its thread, and a screw bearing seat is also arranged on the adjusting screw.

[0008] Furthermore, the magnetic powder brake is electrically connected to a magnetic powder brake controller.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the device has a simple structure, reasonable design and convenient use. The rolled film to be coated on the aluminum coil is installed on the air expansion shaft, and the air expansion shaft is inflated to evenly expand the entire rolled film, so as to achieve uniform limiting of the rolled film; the air expansion shaft and the film are installed on the two air expansion bearing seats of the film coating bracket of the laminating machine, and the air expansion film and the rolled film on the air expansion film are driven to move left and right along the guide rail by adjusting the handle to rotate the adjusting screw, so as to achieve alignment of the film and the aluminum coil; the transmission side of the air expansion shaft is connected to the magnetic powder brake, and when the rolled film rotates and outputs the film with the air expansion shaft, the magnetic powder brake provides a reverse torque to the air expansion shaft, so that the film achieves constant tension, and the magnetic powder brake is used to apply reverse braking force through the magnetic powder brake controller, and the voltage of the magnetic powder brake controller is adjusted according to the viscosity of the film and the production speed, so as to achieve different degrees of tension adjustment during film transportation. The device adjusts the braking force through the magnetic powder brake and the tension controller to achieve the coating requirements of different aluminum coils, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0011] Figure 2 It is a schematic diagram of an air expansion shaft according to an embodiment of the utility model. DETAILED DESCRIPTION

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0013] Example: Figure 1~2 As shown, in this embodiment, a coating tensioning device is provided, including a coating support 1 and two pneumatic bearing seats 2 arranged on the coating support, an pneumatic shaft 3 for limiting the rolled film 12 is arranged between the two pneumatic bearing seats, a magnetic powder brake 4 is arranged at the transmission end of the pneumatic shaft, the magnetic powder brake is fixed on an external frame, the magnetic powder brake is connected to the pneumatic shaft, and the magnetic powder brake is electrically connected to a magnetic powder brake controller 5; by arranging a magnetic powder brake at the end of the pneumatic shaft and a tension controller to adjust the braking force, the tension of the film during the output process is ensured, thereby meeting the coating requirements of different aluminum coils.

[0014] The above-mentioned inflatable shaft is an existing technology. The installation and disassembly of the rolled film is achieved through the expansion and contraction operation of the inflatable shaft. The expansion and contraction of the inflatable shaft can achieve uniform stress on the film, and the film is not easy to wrinkle. At the same time, the inflatable shaft can be quickly and conveniently replaced with a rolled film.

[0015] In the embodiment of the utility model, a slider 6 is provided below the pneumatic bearing seat, guide rails 7 are provided on both sides above the membrane support, and a slide groove for matching with the guide rail is provided below the slider.

[0016] In the embodiment of the utility model, limit blocks 8 are arranged on both sides of the guide rail to prevent the slider from sliding out of the guide rail during movement.

[0017] In an embodiment of the utility model, an adjusting screw 9 is arranged on the outside of one of the pneumatic bearing seats, an adjusting handle 10 is arranged on the outer end of the adjusting screw, the inner end of the adjusting screw passes through a threaded hole arranged at the lower part of the pneumatic bearing seat and cooperates with its thread, and a screw bearing seat 11 is also arranged on the adjusting screw; the screw bearing seat is installed on the top of the pneumatic bearing seat.

[0018] The device can adjust the left and right positions of the air shaft by rotating the adjusting screw to achieve alignment between the film and the aluminum strip. The air bearing seat, the air shaft, and the rolled film on the air shaft are driven to move left and right by the adjusting screw. During the movement, the slider and the guide rail slide in cooperation.

[0019] In the embodiment of the utility model, the magnetic powder brake and the magnetic powder brake controller are prior art. The model of the magnetic powder brake may be CZ-2.5, the model of the magnetic powder brake controller may be KTC800, and the braking force is adjustable from 0 to 24V.

[0020] The film may be a PE film.

[0021] In the embodiment of the utility model, when in use: the rolled film to be covered with the aluminum coil is installed on the air expansion shaft, and the air expansion shaft is inflated to evenly expand the entire rolled film to achieve uniform limiting of the rolled film; the air expansion shaft and the film are installed on the two air expansion bearing seats of the film coating bracket of the laminating machine, and the air expansion film and the rolled film on the air expansion film are driven to move left and right along the guide rail by adjusting the handle to rotate the adjusting screw to achieve alignment of the film and the aluminum coil; the transmission side of the air expansion shaft is connected to the magnetic powder brake, and when the rolled film rotates and outputs the film with the air expansion shaft, the magnetic powder brake provides a reverse torque to the air expansion shaft, so that the film achieves constant tension, and the magnetic powder brake is used to apply reverse braking force through the magnetic powder brake controller, and the voltage of the magnetic powder brake controller is adjusted according to the viscosity of the film and the production speed, so as to achieve different degrees of tension adjustment during film transportation. The device adjusts the braking force through the magnetic powder brake and the tension controller to achieve the coating requirements of different aluminum coils, and has strong versatility.

[0022] Unless otherwise stated, any technical solution disclosed in the above utility model, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many feasible numerical values. Since there are too many numerical values ​​to be exhaustive, the utility model discloses only some numerical values ​​to illustrate the technical solution of the utility model, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the utility model.

[0023] If the words "first", "second" and so on are used in this article to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of description to distinguish the components. Unless otherwise stated, the above words have no special meaning.

[0024] At the same time, if the above-mentioned utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0025] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar or close thereto.

[0026] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated forming process.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A film tensioning device, characterized in that: It includes a film coating support and two pneumatic bearing seats arranged on the film coating support, an pneumatic shaft for limiting the rolled film is arranged between the two pneumatic bearing seats, a magnetic powder brake is arranged at the transmission end of the pneumatic shaft, and the magnetic powder brake is controlled by a magnetic powder brake controller to adjust the braking force.

2. The film tensioning device according to claim 1, characterized in that: A sliding block is arranged below the air bearing seat, guide rails are arranged on both sides above the film-covering support, and a sliding groove for matching with the guide rail is arranged below the sliding block.

3. The film tensioning device according to claim 2, characterized in that: Limiting blocks are arranged on both sides of the guide rail.

4. The film tensioning device according to claim 2, characterized in that: An adjusting screw is arranged outside one of the air bearing seats, an adjusting handle is arranged at the outer end of the adjusting screw, the inner end of the adjusting screw passes through a threaded hole arranged at the lower part of the air bearing seat and cooperates with its thread, and a screw bearing seat is also arranged on the adjusting screw.

5. The lamination tensioning device according to claim 1, characterized in that: The magnetic powder brake is electrically connected to the magnetic powder brake controller.

Images