A kind of air pressure flattening roller for real-time regulation of transverse stress of film

Abstract

This utility model discloses a pneumatic flattening roller for real-time control of transverse stress of thin films, relating to the field of flattening roller technology. It includes a support shaft, characterized in that multiple sets of airbags are equidistantly distributed along the axial direction of the central roller shaft, with each set containing five airbags. A plastic partition is provided between adjacent airbags in any set, and the outer surface of each set of airbags is covered with a rubber sleeve. A metal partition is provided between adjacent sets of airbags, and a ring-belt piezoresistive sensor is fitted onto the outer surface of the metal partition for real-time monitoring of the pressure of the film surface on the roller. This flattening roller adjusts its curvature in real time through the ring-belt piezoresistive sensor. Due to the airbag design, it reacts faster than hydraulic flattening rollers during use, and can form irregularly shaped flattening rollers according to the film surface tension state, performing film flattening and dynamic correction. The curvature of each section of the flattening roller can be quantified, allowing for the deposition of different types of films according to different process materials, saving trial and error costs and improving yield.

Description

Technical Field

[0001] This utility model relates to the technical field of flattening roller equipment, and in particular to a pneumatic flattening roller for real-time control of transverse stress of film. Background Technology

[0002] Flattening is one of the most crucial steps in the unwinding and winding of membranes. Traditionally, membranes are flattened using left and right threaded flattening rollers. These rollers apply lateral spreading force through symmetrically distributed threads and inclined screw ridges, thus flattening the membrane. However, this lateral spreading force is insufficient, the threaded structure is prone to wear, and frequent maintenance and adjustments are required. Currently, there is also an arc-shaped flattening roller suitable for various materials. This roller uses its arc-shaped structure to flatten the membrane, but it lacks real-time data feedback, requiring manual correction of position. This adjustment lag significantly impacts the flattening quality of the membrane.

[0003] Existing flattening rollers cannot identify the film surface condition, have poor adaptability to uneven film thickness, and are prone to wrinkling due to local tension imbalances. Film edge curling requires additional flattening rollers for specialized handling, increasing equipment space requirements. Traditional rollers require machine shutdown for operation, resulting in uneven distribution of bending force at the edges, incomplete flattening, and an inability to respond in real-time to changes in film tension. Existing flattening rollers lack integrated online monitoring of film stress, relying mostly on external sensors for indirect judgment, leading to significant response delays. Most flattening rollers only adjust the curvature as a whole, unable to fine-tune localized areas based on the film's lateral tension distribution. Hydraulic flattening rollers have slow response times, cannot adjust curvature in segments, and have low versatility.

[0004] Therefore, a pneumatic flattening roller for real-time control of transverse stress of thin films is proposed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a pneumatic flattening roller for real-time control of transverse stress in thin films, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a pneumatic flattening roller for real-time control of transverse stress of a thin film, comprising a central roller shaft and multiple sets of air bladders, characterized in that the multiple sets of air bladders are equidistantly distributed along the axial direction of the central roller shaft, each set of air bladders contains five air bladders, a plastic partition is provided between two adjacent air bladders in each set of air bladders, a rubber sleeve is provided on the outer surface of each set of air bladders, a metal partition is provided between two adjacent sets of air bladders, and a ring-type piezoresistive sensor is sleeved on the outer surface of the metal partition for real-time monitoring of the pressure of the film surface on the roller.

[0007] As a further technical solution of this utility model, the ring-belt piezoresistive sensor is arranged in a 360-degree surround manner, which can comprehensively detect the pressure distribution on the roller surface.

[0008] As a further technical solution of this utility model, the plastic partition has a micro-expansion function, which can adapt to the expansion and contraction of the airbag.

[0009] As a further technical solution of this utility model, the rubber sleeve is used to limit the deformation of the airbag and make the roller surface transition uniformly.

[0010] As a further technical solution of this utility model, it also includes metal fixing flanges, and metal fixing flanges are installed at both ends of the central roller.

[0011] As a further technical solution of this utility model, any of the metal fixed flanges is provided with a V-shaped pulley groove.

[0012] As a further technical solution of this utility model, the central roller shaft and the metal partition are connected by a key.

[0013] This invention provides a pneumatic flattening roller for real-time control of transverse stress in thin films, which has the following advantages compared with the prior art: In use, the ring-belt piezoresistive sensor is distributed layer by layer between two adjacent airbags. An external solenoid valve connects the ring-belt piezoresistive sensor to the airbag. The ring-belt piezoresistive sensor monitors the pressure of the film on the flattening roller in real time. Through signal conversion, it feeds back a signal to the airbag. The airbag controls the curvature change of the flattening roller by adjusting the air inlet and outlet. After the change, it monitors the roller surface pressure in real time and makes multiple adjustments until the roller surface pressure meets the requirements.

[0014] This flattening roller adjusts its curvature in real time using a ring-belt piezoresistive sensor. With its airbag design, it reacts faster than hydraulic rollers during use. It can form irregularly shaped flattening rollers according to the film tension state, flattening and dynamically correcting the film. The curvature of each section of the flattening roller can be quantified, allowing for the deposition of different types of films according to different process materials, saving trial and error costs and improving productivity. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a pneumatic flattening roller for real-time control of transverse stress in thin films; Figure 2 A cross-sectional view of a pneumatic flattening roller AA for real-time control of transverse stress of a thin film; Figure 3 This is a cross-sectional view of a pneumatic flattening roller BB for real-time control of transverse stress in thin films.

[0016] In the diagram: 1. Rubber sleeve; 2. Airbag; 3. Plastic partition; 4. Center roller; 5. Ring belt piezoresistive sensor; 6. Metal partition; 7. Metal fixing flange; 8. V-belt pulley groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3 This utility model provides a pneumatic flattening roller technology solution for real-time control of transverse stress of film, including a central roller shaft 4 and multiple sets of air bladders 2. The multiple sets of air bladders 2 are equidistantly distributed along the axial direction of the central roller shaft 4, and each set of air bladders 2 has five air bladders. A plastic partition 3 is set between two adjacent air bladders 2 in each set of air bladders 2. The outer surface of each set of air bladders 2 is covered with a rubber sleeve 1, which is used to limit the deformation of the air bladders 2 and make the roller surface transition uniform. A metal partition 6 is set between two adjacent sets of air bladders 2 to enhance structural rigidity and installation stability. A ring-shaped piezoresistive sensor 5 is sleeved on the outer surface of the metal partition 6 and is wound in a ring shape on the surface of the air bladder 2 for real-time monitoring of the pressure of the film surface on the roller. The ring-shaped piezoresistive sensor 5 is arranged in a 360-degree surround, which can comprehensively detect the pressure distribution on the roller surface.

[0019] Furthermore, the plastic partition 3 has a micro-stretch function, which can adapt to the expansion and contraction of the airbag 2.

[0020] It also includes metal fixing flanges 7. Both ends of the central roller shaft 4 are equipped with metal fixing flanges 7. The metal fixing flanges 7 are used to increase structural rigidity and installation stability. Each metal fixing flange 7 is provided with a V-shaped pulley groove 8 for installation.

[0021] The central roller 4 is connected to the metal partition 6 by a key, making the structure more robust.

[0022] The working principle of this utility model is as follows: When this utility model is in use, the ring-belt piezoresistive sensor 5 is distributed layer by layer between two adjacent airbags 2. The external solenoid valve connects the ring-belt piezoresistive sensor 5 and the airbag 2. The ring-belt piezoresistive sensor 5 monitors the pressure of the film on the flattening roller in real time. Through signal conversion, it feeds back the signal to the airbag 2. The airbag 2 controls the curvature change of the flattening roller by adjusting the air inlet and outlet. After the change, it monitors the roller surface pressure in real time and makes multiple adjustments until the roller surface pressure meets the requirements.

[0023] The flattening roller adjusts its curvature in real time via a ring-belt piezoresistive sensor 5. With the design of the airbag 2, it reacts faster than the hydraulic type during use. It can form irregularly shaped flattening rollers according to the film tension state, flatten the film and dynamically correct it. The curvature of each section of the flattening roller can be quantified, and different types of films can be deposited according to different process materials, saving trial and error costs and improving productivity.

[0024] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A pneumatic flattening roller for real-time control of transverse stress in a film, comprising a central roller shaft (4) and a plurality of groups of air bags (2), characterized in that A plurality of said air bags (2) are equidistantly distributed along the axial direction of said central roller shaft (4), and the number of air bags (2) in any group is five, and a plastic partition (3) is arranged between any two adjacent air bags (2) in any group, and the outer surface of any group of said air bags (2) is covered with a rubber sleeve (1), and a metal partition (6) is arranged between two adjacent groups of said air bags (2), and the outer surface of said metal partition (6) is sleeved with a ring belt piezoresistive sensor (5) for real-time monitoring of the pressure of the film surface against the roller.

2. The air pressure flattening roller for real-time control of transverse stress of a film according to claim 1, characterized in that, Said ring belt piezoresistive sensor (5) is arranged in a 360-degree ring around the roller surface, which can comprehensively detect the pressure distribution of the roller surface.

3. The air pressure flattening roller for real-time control of transverse stress in a film according to claim 1, characterized in that, Said plastic partition (3) has a micro-elongation function and can adaptively deform according to the expansion and contraction of the air bag (2).

4. The air pressure flattening roller for real-time control of transverse stress in a film according to claim 1, wherein, Said rubber sleeve (1) is used to limit the deformation of the air bag (2) and make the roller surface uniform.

5. The air pressure flattening roller for real-time control of transverse stress in a film according to claim 1, wherein, It also includes a metal fixing flange (7), and the two ends of said central roller shaft (4) are both provided with a metal fixing flange (7).

6. The air pressure spreading roller for real-time control of transverse stress of a thin film according to claim 5, wherein A V-belt groove (8) is arranged on any said metal fixing flange (7).

7. The air pressure spreading roller for real-time control of transverse stress of a thin film according to claim 1, wherein Said central roller shaft (4) is connected with said metal partition (6) through a key.

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