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CN-122025426-A - Aluminum foil production process capable of inhibiting lotus leaf edge phenomenon

CN122025426ACN 122025426 ACN122025426 ACN 122025426ACN-122025426-A

Abstract

The invention relates to the technical field of aluminum foil production technology, and relates to an aluminum foil production technology capable of inhibiting lotus leaf edge phenomenon, which comprises the following steps of S1, arranging at least one group of press roller devices on a foil travelling path, wherein the press roller devices comprise a smooth roller region and a gear roller region which are coaxially arranged, the smooth roller region is arranged at the center of the press roller device, the gear roller regions are arranged at two ends of the press roller device, the roller surface of the smooth roller region is a smooth surface, and the roller surface of the gear roller region is provided with tooth-shaped structures distributed circumferentially along the axle center of the press roller device, S2, pressing a gear roller into the edge part of the foil at a set pressing depth, wherein the pressing depth is 10% -30% of the thickness of the foil, and S3, adjusting the online tension N1 of the foil to ensure that the foil meets the following conditions: s4, maintaining the working temperature of the compression roller device at 40-80 ℃. The invention realizes the transition from passive compensation to active regulation and control, and can obviously inhibit the lotus leaf edge phenomenon.

Inventors

  • GUO XUDONG
  • LIU HUIMING
  • GUO YI
  • HUANG QIQIAN

Assignees

  • 乳源瑶族自治县东阳光化成箔有限公司

Dates

Publication Date
20260512
Application Date
20251230

Claims (10)

  1. 1. The aluminum foil production process capable of inhibiting the lotus leaf edge phenomenon is characterized by comprising the following steps of: The method comprises the following steps that S1, at least one group of press roller devices are arranged on a foil travelling path, each press roller device comprises a smooth roller region (100) and a gear roller region (200) which are coaxially arranged, each smooth roller region (100) is arranged in the center of each press roller device, each gear roller region (200) is arranged at two ends of each press roller device, the roller surface of each smooth roller region (100) is a smooth surface, and the roller surface of each gear roller region (200) is provided with a toothed structure (210) which is circumferentially distributed along the axis of each press roller device; S2, adjusting the position of the press roller device to enable the gear roller to be pressed into the edge part of the foil with a set pressing depth, wherein the pressing depth is 10% -30% of the thickness of the foil; s3, adjusting the online tension of the foil passing through the action section of the compression roller device Let it satisfy: Wherein, the For the online tension of the foil passing through the application section of the roll arrangement, Is a standard tension in the foil production process; and S4, heating the gear roller region (200) to maintain the working temperature of the gear roller region (200) at 40-80 ℃.
  2. 2. The production process according to claim 1, wherein in step S1, the two gear roller zones (200) are equal in length, each gear roller zone (200) being 2% -4% of the length of the press roller device.
  3. 3. The production process according to claim 1, wherein in step S1, the diameters of the roller bodies of the gear roller region (200) and the smooth roller region (100) are 400-600 mm.
  4. 4. The production process according to claim 1, wherein in step S1, the surface roughness Ra of the smooth roll zone (100) is equal to or less than 0.01 μm.
  5. 5. The production process according to claim 1, characterized in that in step S1 the roll surface of the gear roll zone (200) is provided with a hard anodized layer or a ceramic coating.
  6. 6. The process according to claim 1, wherein in step S1, the tooth-like structure (210) is such that the tooth height is 0.05-0.2 mm and the tooth pitch is 0.5-2 mm.
  7. 7. The production process according to claim 1, wherein in step S1, the tooth form of the tooth-like structure (210) is rectilinear, V-shaped or corrugated.
  8. 8. The production process according to claim 1, wherein in step S1, the press roll device is provided with two groups on the travelling path of the foil, which are located at the outlet position of the oven and the inlet position of the winding device, respectively.
  9. 9. The production process according to claim 1, wherein in step S2, the pressing depth is controlled in real time by a gap adjusting mechanism driven by a servo motor.
  10. 10. The production process according to claim 1, characterized in that in step S3, the control of the on-line tension is achieved by adjusting the output torque of the drive motor or the damping of the brake.

Description

Aluminum foil production process capable of inhibiting lotus leaf edge phenomenon Technical Field The invention relates to the technical field of aluminum foil production processes, in particular to an aluminum foil production process capable of inhibiting a lotus leaf edge phenomenon. Background The production of the formed foil for the aluminum electrolytic capacitor generally adopts a continuous formation process, and the foil needs to be sequentially subjected to a plurality of treatment areas such as heating, electrolysis, cleaning, drying and the like in the production process. In the process, the edge of the foil is extremely prone to irregular transverse wavy folds due to differences in heat and tension distribution and stress release caused by the difference between the edge and the middle area of the foil, and the phenomenon is commonly called as 'scallop edge' in the industry, and the phenomenon can cause serious deterioration of flatness of the foil in the width direction. In order to inhibit the lotus leaf edges, the current common practice in the industry mainly depends on the adjustment of the overall process parameters of a production line, one common idea is to integrally increase the tension of foil materials in the running process, attempt to smooth wrinkles through stronger mechanical constraint, and the other idea is to reduce the temperature of procedures such as drying and the like, so that the stress caused by uneven heat shrinkage is reduced. However, the tensile force is increased, and the tensile stress on the foil is also obviously increased, so that the foil, especially the middle effective area, is subjected to micro damage or uneven thickness due to excessive stretching, and the final specific volume, strength and other key properties of the foil are potentially damaged. The latter reduces the thermal stress to a certain extent, but the heat efficiency is sacrificed, the process time is prolonged, and even the formation reaction is insufficient due to insufficient temperature, so that the quality of the oxide film is affected. Both methods in the prior art belong to passive compensation strategies, have limited inhibition effect on the lotus leaf edge, have other quality or efficiency defects, and cannot solve the problem that the contraction behaviors of the edge part and the middle area of the foil are not synchronous. Disclosure of Invention The invention aims to overcome the defects that the prior art adopts a passive compensation strategy, has limited inhibition effect on the lotus leaf edge and has other defects, and provides an aluminum foil production process capable of inhibiting the lotus leaf edge phenomenon, so that the transition from passive compensation to active regulation is realized, the generation and development of the lotus leaf edge phenomenon can be obviously inhibited, and meanwhile, the main body area in the middle of the foil is not influenced. In order to solve the technical problems, the invention adopts the following technical scheme: the aluminum foil production process capable of inhibiting the lotus leaf edge phenomenon comprises the following steps of: S1, arranging at least one group of press roller devices on a foil travelling path, wherein the press roller devices comprise a smooth roller region and a gear roller region which are coaxially arranged, the smooth roller region is arranged at the center of the press roller device, the gear roller regions are arranged at two ends of the press roller device, the roller surfaces of the smooth roller regions are smooth surfaces, and the roller surfaces of the gear roller regions are provided with tooth-shaped structures which are circumferentially distributed along the axle center of the press roller device; S2, adjusting the position of the press roller device to enable the gear roller to be pressed into the edge part of the foil with a set pressing depth, wherein the pressing depth is 10% -30% of the thickness of the foil; s3, adjusting the online tension of the foil passing through the action section of the compression roller device Let it satisfy: Wherein, the For the online tension of the foil passing through the application section of the roll arrangement,Is a standard tension in the foil production process; and S4, heating the gear roller region to maintain the working temperature of the gear roller region at 40-80 ℃. According to the aluminum foil production process capable of inhibiting the lotus leaf edge phenomenon, at least one group of compression roller devices with coaxial structures are arranged on a foil travelling path, the center of the device is a smooth roller area with a smooth roller surface, and two ends of the device are gear roller areas with circumferentially distributed tooth-shaped structures on the roller surface, so that a partition action foundation for middle constraint and edge deformation treatment is constructed on hardware. The gear roller is pressed into the ed