Apparatus and method for removing wrinkles from sheet material
AssigneeHaewon T&D Co., Ltd.
InventorsKi Woong HYUN, Kwang Ho AHN, Joo Sung OH
Life of this patent
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Abstract
An apparatus for removing wrinkles from a sheet material, includes: an expander roll that rotates in a bent state with respect to a rotation axis bent to straighten and remove wrinkles formed in a sheet material being transferred to be wrinkle-removed; a roll bender that generates a bending moment to bend the expander roll; a roll rotator that rotates the expander roll; a roll controller that controls the operation of the roll bender and the roll rotator; a vision camera that photographs one surface of the sheet material being wrinkle-removed, so as to generate an input image; and a wrinkle detection module that detects wrinkles in the sheet material to be detected, using the input image.
Claims12
An apparatus for removing wrinkles from a sheet material, the apparatus comprising:
- an expander roll that rotates in a bent state with respect to a rotation axis bent to straighten and remove wrinkles formed in a sheet material being transferred to be wrinkle-removed, while supporting the sheet material to be wrinkle-removed;
- a roll bender that generates a bending moment to bend the expander roll;
- a roll rotator that rotates the expander roll;
- a roll controller that controls an operation of the roll bender and the roll rotator;
- a vision camera that photographs one surface of the sheet material being wrinkle-removed, so as to generate an input image;
- and
- a wrinkle detection module that detects wrinkles in the sheet material to be detected, using the input image,
- wherein the wrinkle detection module comprises a region of interest (ROI) confirmation unit that confirms an ROI from the input image to generate a confirmed ROI image, an analyzing unit that generates image analysis information from the confirmed ROI image, and a quantification unit that quantifies the level of wrinkles formed in the sheet material being detected and produces wrinkle level information, and the roll controller adjusts, in response to the wrinkle level information, a bending degree of the expander roll and a rotation position of the expander roll.
A method for removing wrinkles from a sheet material, the method comprising:
- an input image generation operation in which a vision camera generates an input image by photographing one surface of a sheet material being transferred to be wrinkle-removed;
- a region of interest (ROI) confirmation operation in which a wrinkle detection module generates a confirmed ROI image by confirming an ROI from the input image;
- an analyzing operation in which the wrinkle detection module generates image analysis information from the confirmed ROI image;
- a quantification operation in which the wrinkle detection module quantifies a level of wrinkles formed in the sheet material to be wrinkle-removed, using the image analysis information to generate wrinkle level information;
- and
- an expander roll controlling operation in which a bent degree and a rotation position of an expander roll that rotates in a bent state with respect to a rotation axis bent to straighten and remove wrinkles formed in a sheet material being transferred to be wrinkle-removed, while supporting the sheet material to be wrinkle-removed, are controlled by a roll controller in response to the wrinkle level information.
Dependencies are inferred from the claim text.