Paper tube curling device

The invention discloses a paper tube curling device. A curling mechanism comprises an upper curling mechanism and a lower expansion mechanism; the lower expansion mechanism comprises a pressing plate,outward expansion plates, a spring ring, screws and nuts; the pressing plate is positioned at the bo...

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Bibliographic Details
Main Author ZHOU CHUANYONG
Format Patent
LanguageChinese
English
Published 18.09.2020
Subjects
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