FLANGE SHAPING APPARATUS FOR CIRCULAR DUCT

Title:

FLANGE SHAPING APPARATUS FOR CIRCULAR DUCT

Document Type and Number:

WIPO Patent Application WO/2021/182734

Kind Code:

A1

Abstract:

The present invention relates to a flange shaping apparatus for a circular duct. The flange shaping apparatus for a circular duct according to the present invention comprises: a shaping jig which is arranged to surround the outer circumferential surface of the lower end portion of a duct, and has a shaping groove in a surface facing the duct; a support at the lower portion of the shaping jig to support the lower end portion of the duct; a height adjustment unit for adjusting the height of the support; and a shaping unit which shapes a flange in the lower end portion of the duct, the flange having a shape corresponding to the shaping groove of the shaping jig, by striking the inner circumferential surface of the lower end portion of the duct, wherein the shaping groove includes a first shaping surface formed on the surface facing the duct, and a second shaping surface additionally extending from the end portion of the first shaping surface, and the height adjustment unit adjusts the location of the support relative to the shaping jig, such that the flange can be shaped only on the first shaping surface or shaped on the first shaping surface and the second shaping surface.

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Inventors:

NOH SUNG KEUN (KR)
KIM OK TAE (KR)

Application Number:

PCT/KR2021/000101

Publication Date:

September 16, 2021

Filing Date:

January 06, 2021

Export Citation:

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Assignee:

NOH SUNG KEUN (KR)
KIM OK TAE (KR)

International Classes:

B21D19/08; B21D37/10

Foreign References:

JP2000271677A	2000-10-03
KR100594623B1	2006-06-30
KR101996208B1	2019-07-03
JP2008260106A	2008-10-30
KR102148627B1	2020-08-26
KR100846878B1	2008-07-17
DE102016034581A
DE10205442A1	2003-08-21

Other References: