Title:
LIFTING MECHANISM FOR TABLETOP HEMMING MACHINE BASED ON SECTIONAL CONTROL PRINCIPLE
Document Type and Number:
WIPO Patent Application WO/2022/007364
Kind Code:
A1
Abstract:
A lifting mechanism for a tabletop hemming machine based on a sectional control principle, comprising a base (7), a lifting block (8), a lead screw (9), a left wedge block (10), a right wedge block (11), and a motor (14). The lead screw (9) is rotatably provided on the base (7), and has a levorotation thread section matching the left wedge block (10) and a dextrorotation thread section matching the right wedge block (11); the lifting block (8) has two bottom slopes (83) which are symmetrically arranged; the two bottom slopes (83) match the left wedge block (10) and the right wedge block (11), respectively; each bottom slope (83) comprises a pre-hemming surface (831) and a final hemming surface (833) at the two ends, and a quick stroke surface (832) in the middle; the slope of the quick stroke surface (832) is greater than the slope of the pre-hemming surface (831) and the final hemming surface (833).
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Inventors:
LIU LEI (CN)
FANG CHENCHENG (CN)
LI JIGUO (CN)
HE WEI (CN)
FANG CHENCHENG (CN)
LI JIGUO (CN)
HE WEI (CN)
Application Number:
PCT/CN2020/141453
Publication Date:
January 13, 2022
Filing Date:
December 30, 2020
Export Citation:
Assignee:
JEE TECH CO LTD (CN)
International Classes:
B21D19/08; B21C51/00; B66F7/00; B66F7/28
Foreign References:
| CN111974854A | 2020-11-24 | |||
| CN112077218A | 2020-12-15 | |||
| US6644089B1 | 2003-11-11 | |||
| CN2449908Y | 2001-09-26 | |||
| CN206536456U | 2017-10-03 | |||
| CN108455472A | 2018-08-28 |
Attorney, Agent or Firm:
KEYCOM PARTNERS, P.C. (CN)
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