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Title:
TAPPING CUTTER DEVICE FOR EYELET BUTTON HOLE SEWING MACHINE
Document Type and Number:
WIPO Patent Application WO/2011/143812
Kind Code:
A1
Abstract:
A tapping cutter device for an eyelet button hole sewing machine includes a multi-force cylinder (4), an auxiliary cylinder (12), an attachment base (8), a cutter lever (1), a cutter (22) and a sensor (13). The middle of the cutter lever (1) is hinged on an inner wall of an upper housing (25), and two ends are hinged on a piston rod of the multi-force cylinder (4) and a fixed shaft of the cutter (22), respectively. The attachment base (8) has a first and a second branch arm (81, 82) at a right angle to each other, and the right angle portion is hinged on an inner wall of a lower housing (26). The first branch arm (81) is hinged on the cylinder body of the multi-force cylinder (4), and the second branch arm (82) is hinged on the end of a piston rod of the auxiliary cylinder (12). The sensor (13) is arranged on the cylinder body of the auxiliary cylinder (12) to acquire a position of the piston rod thereof. A control unit turns on pressure air inlets on the multi-force cylinder (4) according to the position signal. The device adjusts the position of the multi-force cylinder (4) via the auxiliary cylinder (12), thereby improving cutting speed of the device by more than 70%, decreasing air consumption of the cylinder by more than 60%, extending service life of the cutter and reducing noise caused by material breaking on a premise of no change in the stroke of the cutter and the cutter pad, the cylinder diameter and the cutting force.

Inventors:
ZHANG ZHANGSHENG (CN)
Application Number:
PCT/CN2010/072905
Publication Date:
November 24, 2011
Filing Date:
May 19, 2010
Export Citation:
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Assignee:
ZHANG ZHANGSHENG (CN)
International Classes:
D05B37/02
Domestic Patent References:
WO2000077288A12000-12-21
Foreign References:
CN101671922A2010-03-17
CN1769563A2006-05-10
JP2007090052A2007-04-12
JPS5993A1984-01-05
US3789782A1974-02-05
Attorney, Agent or Firm:
BEIJING PSCU PATENT OFFICE (CN)
北京捷诚信通专利事务所 (CN)
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Claims: