JPS6358979U - - Google Patents
Info
- Publication number
- JPS6358979U JPS6358979U JP15344086U JP15344086U JPS6358979U JP S6358979 U JPS6358979 U JP S6358979U JP 15344086 U JP15344086 U JP 15344086U JP 15344086 U JP15344086 U JP 15344086U JP S6358979 U JPS6358979 U JP S6358979U
- Authority
- JP
- Japan
- Prior art keywords
- looper
- bobbin thread
- thread
- dead center
- adjustment mechanism
- 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.)
- Granted
Links
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
第１図ないし第１１図は本考案の一実施例を示
し、第１図は装置の全体構成を示す簡略斜視図、
第２図ないし第４図は下糸調節装置の動作を順を
追つて示す簡略正面図、第５図ないし第７図はル
ーパと上針との動作を順を追つて示す簡略正断面
図、第８図ないし第１０図は前進側下糸調節機構
の動作を順を追つて示す簡略側断面図、第１１図
はカム体の後退死点状態を示す簡略正面図、第１
２図は従来の下糸調節装置を示す原理図である。
ａ……ルーパ、１８……下糸調節装置、１９…
…後退側下糸調節機構、２１……前進側下糸調節
機構、２４ａ……カム面、２５……カム体、２６
……糸通ガイド体、３１……倣い補助手段、３５
……傾動板、３６……糸通ガイド体。
1 to 11 show an embodiment of the present invention, and FIG. 1 is a simplified perspective view showing the overall configuration of the device;
2 to 4 are simplified front views showing the operation of the lower thread adjusting device in order; FIGS. 5 to 7 are simplified front sectional views showing the operation of the looper and the upper needle in order; 8 to 10 are simplified side sectional views showing the operation of the forward-side bobbin thread adjustment mechanism in order; FIG. 11 is a simplified front view showing the cam body in the backward dead center state;
FIG. 2 is a principle diagram showing a conventional bobbin thread adjustment device. a... Looper, 18... Lower thread adjustment device, 19...
...Retreat side lower thread adjustment mechanism, 21...Forward side lower thread adjustment mechanism, 24a...Cam surface, 25...Cam body, 26
... Threading guide body, 31 ... Copying auxiliary means, 35
...Tilt plate, 36...Threading guide body.
Claims (1)
に、先端面にカム面を形成したカム体と、このカ
ム体のカム面上にルーパの下糸を掛け渡す糸通ガ
イト体と、ルーパが前進死点から後退死点に後退
し、上針がルーパの下糸をくぐり始める状態まで
、下糸をカム面に沿つて倣わせて所要長さのたぐ
りを得るとともに、それ以後のルーパの後退死点
までそのたぐり分だけ保持する倣い補助手段とか
らなる後退側下糸調節機構を備え、また、ルーパ
の往復傾動と同期した傾動をなす傾動板と、ルー
パの後退死点から前進死点に前進する期間に対応
する傾動側に下糸を通過させ、ルーパが上針の上
糸をすくい始める状態まで下糸の引張りを支持す
る糸通ガイド体とからなる前進側下糸調節機構を
備えたことを特徴とする下糸調節装置。 A cam body that oscillates in synchronization with the reciprocating oscillation of the looper and has a cam surface formed on its tip surface, a threading guide body that passes the bobbin thread of the looper over the cam surface of the cam body, and the looper moves forward. The lower thread is traced along the cam surface until the upper needle moves back from the dead center to the retraction dead center and the lower thread begins to pass through the looper's lower thread to obtain the required length, and then It is equipped with a retraction-side bobbin thread adjustment mechanism consisting of a copying auxiliary means that holds the looper up to the point by the amount of tracing, and a tilting plate that tilts in synchronization with the reciprocating tilting of the looper, and a bobbin thread adjustment mechanism that moves the looper forward from the retraction dead center to the forward dead center. A forward side bobbin thread adjustment mechanism is provided, which includes a threading guide body that allows the bobbin thread to pass through the tilting side corresponding to the period in which the bobbin thread passes, and supports tension of the bobbin thread until the looper begins to scoop up the needle thread of the upper needle. A bobbin thread adjustment device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15344086U JPH0333345Y2 (en) | 1986-10-06 | 1986-10-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15344086U JPH0333345Y2 (en) | 1986-10-06 | 1986-10-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6358979U true JPS6358979U (en) | 1988-04-19 |
| JPH0333345Y2 JPH0333345Y2 (en) | 1991-07-15 |
Family
ID=31072324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15344086U Expired JPH0333345Y2 (en) | 1986-10-06 | 1986-10-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0333345Y2 (en) |
-
1986
- 1986-10-06 JP JP15344086U patent/JPH0333345Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0333345Y2 (en) | 1991-07-15 |
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