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Patent Searching and Data


Title:
SEWING MACHINE THREADING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/138163
Kind Code:
A1
Abstract:
Provided is a sewing machine threading device, comprising: hermetic lips (7a - 7e) which are capable of making a hermetic contact with a peripheral ring-shaped region (22) of needles (1a, 1b, 1e - 1g) which surrounds thread discharge ports (5a - 5e) of thread holes (1 - 1d, 1h - 1j) of the needle, and which further comprises a corresponding peripheral ring-shaped rest (24) which surrounds intake ports (6a - 6e) which draw in air from the thread discharge ports of the thread holes of the needles; a thread suction guidance tube which is connected to the intake ports of the hermetic lips; a position changing mechanism which, when threading the needle, moves the hermetic lips to a threading position such that the hermetic lips are in contact with the needle with the intake ports being aligned with the thread discharge ports of the thread holes of the needle, and, when forming a stitch, retracts the hermetic lips from the needle and moves said hermetic lips to a standby position; and a pump which, with the thread suction guidance tubes being connected to a suction port, takes in one end of the thread which is to be inserted into thread entry ports of the thread holes of the needles when threading the needles in the suction port from the thread discharge ports of the thread holes of the needles via the intake ports by way of the thread suction guidance tubes, thereby threading the one end of the thread through the thread holes of the needles.

Inventors:
SAKUMA, Tohru (1-12-7, Shimaminam, Yamagata-shi Yamagata 86, 〒9900886, JP)
SUZUKI, Mitsuharu (1-12-7, Shimaminam, Yamagata-shi Yamagata 86, 〒9900886, JP)
KUDO, Shigenori (1-12-7, Shimaminam, Yamagata-shi Yamagata 86, 〒9900886, JP)
SATOU, Mitsuru (1-12-7, Shimaminam, Yamagata-shi Yamagata 86, 〒9900886, JP)
Application Number:
JP2016/069416
Publication Date:
August 17, 2017
Filing Date:
June 30, 2016
Export Citation:
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Assignee:
SUZUKI MANUFACTURING, LTD. (1-12-7, Shimaminami Yamagata-sh, Yamagata 86, 〒9900886, JP)
International Classes:
D05B87/00; D05B63/00
Foreign References:
JP2007105283A2007-04-26
JPH1076094A1998-03-24
JPH06154461A1994-06-03
JP2008036341A2008-02-21
JP2011062501A2011-03-31
Attorney, Agent or Firm:
MORIYA, Kazuo (Daiichi Teikei Bldg, 1-13-4 Nihonbashi-Kakigaracho Chuo-ku Tokyo, 14, 〒1030014, JP)
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