JPH0376576U - - Google Patents
Info
- Publication number
- JPH0376576U JPH0376576U JP13879389U JP13879389U JPH0376576U JP H0376576 U JPH0376576 U JP H0376576U JP 13879389 U JP13879389 U JP 13879389U JP 13879389 U JP13879389 U JP 13879389U JP H0376576 U JPH0376576 U JP H0376576U
- Authority
- JP
- Japan
- Prior art keywords
- detecting
- rotational angular
- driving means
- angular position
- lower thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009958 sewing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Sewing Machines And Sewing (AREA)
Description
第1図は本考案の1実施例の水平釜を設けたミ
シンの一部概略構成図、第2図は第1図のクラン
プ開放ソレノイドを動作する本考案の1実施例の
下糸クランプ開放装置のブロツク図、第3図は第
2図の装置の動作を説明するフローチヤート、第
4図は第2図の装置の動作を説明するタイミング
チヤート、第5図は従来の水平釜を設けたミシン
の概略構成図、第6図は第5図の水平釜の部分の
平面図、第7図は従来の下糸クランプ開放装置の
概略説明図である。
9……下軸、11……水平釜、12……釜軸台
、14……動メス、15……固定メス、16……
下糸、17……クランプばね、18……クランプ
開放ソレノイド、19……プツシユロツド、20
……ねじ、21……釜軸、22,23……ギヤ、
24……CPU、25……速度発電機、26……
上下位置検出器、27……ペダル。
Fig. 1 is a partial schematic diagram of a sewing machine equipped with a horizontal hook according to an embodiment of the present invention, and Fig. 2 is a bobbin thread clamp release device according to an embodiment of the present invention that operates the clamp release solenoid of Fig. 1. 3 is a flow chart explaining the operation of the device shown in FIG. 2, FIG. 4 is a timing chart explaining the operation of the device shown in FIG. 2, and FIG. 5 is a sewing machine equipped with a conventional horizontal hook. 6 is a plan view of the horizontal shuttle portion of FIG. 5, and FIG. 7 is a schematic explanatory diagram of a conventional bobbin thread clamp release device. 9... lower shaft, 11... horizontal hook, 12... hook shaft stand, 14... moving knife, 15... fixed knife, 16...
Lower thread, 17... Clamp spring, 18... Clamp release solenoid, 19... Push rod, 20
... Screw, 21 ... Hook shaft, 22, 23 ... Gear,
24... CPU, 25... Speed generator, 26...
Vertical position detector, 27...pedal.
Claims (1)
切り装置により切断された下糸の供給源側端部を
次の縫い始めの所定期間経過するまで保持してか
ら解放するようにした下糸保持装置において、主
軸の特定の回転角度位置を検出する位置検知手段
と、該位置検知手段が予め設定した主軸の特定の
複数回転目の特定回転角度位置を検出することに
より往動し、その後の特定回転角度位置を検出す
ることにより復帰する可動部材を有する駆動手段
と、該駆動手段の往動により前記動メスと協働し
て下糸をクランプ可能とし、復帰により下糸を解
放可能に駆動手段の可動部材に支持したクランプ
部材とを備えたことを特徴とするミシンの下糸保
持装置。 A bobbin thread holding device that holds the cut end of the bobbin thread on the supply source side until a predetermined period of time has elapsed before starting the next stitch, and then releases it. The device includes a position detection means for detecting a specific rotational angular position of the spindle, and the position detection means moves forward by detecting a specific rotational angular position of a preset plurality of rotations of the spindle. A driving means having a movable member that returns by detecting a rotational angular position; and a driving means that allows the lower thread to be clamped in cooperation with the movable knife by forward movement of the driving means, and to release the lower thread by returning. A lower thread holding device for a sewing machine, comprising a clamp member supported by a movable member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13879389U JPH0376576U (en) | 1989-11-30 | 1989-11-30 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13879389U JPH0376576U (en) | 1989-11-30 | 1989-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0376576U true JPH0376576U (en) | 1991-07-31 |
Family
ID=31685871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13879389U Pending JPH0376576U (en) | 1989-11-30 | 1989-11-30 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0376576U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001062180A (en) * | 1999-08-16 | 2001-03-13 | Duerkopp Adler Ag | Lock stitch sewing machine provided with thread nipper assembly |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS635987B2 (en) * | 1978-04-20 | 1988-02-06 | Nippon Electric Co | |
JPS6339383B2 (en) * | 1983-01-13 | 1988-08-04 | Noritake Kanpanii Rimitedo Kk |
-
1989
- 1989-11-30 JP JP13879389U patent/JPH0376576U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS635987B2 (en) * | 1978-04-20 | 1988-02-06 | Nippon Electric Co | |
JPS6339383B2 (en) * | 1983-01-13 | 1988-08-04 | Noritake Kanpanii Rimitedo Kk |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001062180A (en) * | 1999-08-16 | 2001-03-13 | Duerkopp Adler Ag | Lock stitch sewing machine provided with thread nipper assembly |
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