JPS6131386U - Needle thread feeding device of sewing machine - Google Patents
Needle thread feeding device of sewing machineInfo
- Publication number
- JPS6131386U JPS6131386U JP11848384U JP11848384U JPS6131386U JP S6131386 U JPS6131386 U JP S6131386U JP 11848384 U JP11848384 U JP 11848384U JP 11848384 U JP11848384 U JP 11848384U JP S6131386 U JPS6131386 U JP S6131386U
- Authority
- JP
- Japan
- Prior art keywords
- needle thread
- thread
- length
- sewing machine
- needle
- 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
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、従来の自動糸テンション装置かあるミシンの
上糸繰出装置の要部の斜視図、第２図は同モーションダ
イヤグラム、第３図はこの考案か適用された第１の実施
例の信号筐達系を示すブロック図、第４図は同ブロック
図、第５図はこの考案が適用された第２の実施例のミシ
ンの上糸繰り出し装置を示す斜視図、第６図は同モーシ
ョンダイヤグラム、第７図は同制御関係の入出力の説明
図である。
図において１２は繰り出し部、１６はワンチップ・マイ
コン、３０は布厚検知部、３５はマイクロコンピュータ
。
なお、各図中同一符号は同一部分または相当部分を表わ
すものである。Fig. 1 is a perspective view of the essential parts of a conventional automatic thread tensioning device or needle thread feeding device of a sewing machine, Fig. 2 is a motion diagram of the same, and Fig. 3 is a first embodiment of the device to which this invention is applied. FIG. 4 is a block diagram showing the signal housing delivery system, FIG. 5 is a perspective view showing the needle thread unwinding device of the second embodiment of the sewing machine to which this invention is applied, and FIG. 6 is the same motion The diagram, FIG. 7, is an explanatory diagram of input/output related to the same control. In the figure, 12 is a feeding section, 16 is a one-chip microcomputer, 30 is a cloth thickness detection section, and 35 is a microcomputer. Note that the same reference numerals in each figure represent the same or equivalent parts.
Claims (1)
形成に要する上糸長さを演出可能な演算式及び実験的に
求めた縫い始め時の上糸のたるみの長さを記憶した記憶
装置と、 ミシンの始動操作信号に関連して演算式に基いて一縫目
形成に必要な上糸長さを演算し上糸長さに対応する糸量
信号を発生する第一演算装置と、第一演算装置により算
出しな上糸長さと記憶装、置に記憶した上糸のたるみ長
さとから上糸のたるみ長さに相当する上糸が縫目形成に
よって消費される時期を予め又は一縫目形成毎に演算し
、その時期に解除信号を出力する第二演算装置と、第一
演算装置からの糸量信号に基いて作動し上糸を糸巻から
相当長さ繰出して天秤へ供給する繰出し装置と、 ミシンの始動操作信号に関連して第一演算装置からの糸
量信号の出力を禁止し、解除信号に関連してその禁止を
解除する制御回路、 とを備えたことを特徴とするミシンの上糸繰出し装置。[Claims for Utility Model Registration] An arithmetic expression that has terms corresponding to the cloth feed pitch, cloth thickness, etc. and that can produce the needle thread length required to form one stitch, and an experimentally determined sewing start time The machine calculates the needle thread length required to form one stitch based on the memory device that stores the slack length of the needle thread and a calculation formula in conjunction with the sewing machine start operation signal, and corresponds to the needle thread length. A first arithmetic device that generates a thread amount signal, and a memory device that calculates the needle thread length corresponding to the slack length of the needle thread from the needle thread length calculated by the first computing device and the slack length of the needle thread stored in the device. A second calculation device calculates the time consumed by stitch formation in advance or for each stitch formation, and outputs a release signal at that time, and a second calculation device operates based on the thread amount signal from the first calculation device to release the upper thread A feeding device that feeds a considerable length of yarn from a bobbin to a thread take-up, and a thread amount signal output from the first computing device in connection with a sewing machine start operation signal are prohibited, and the prohibition is canceled in connection with a release signal. A needle thread feeding device for a sewing machine, comprising: a control circuit for controlling the needle thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11848384U JPS6131386U (en) | 1984-07-31 | 1984-07-31 | Needle thread feeding device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11848384U JPS6131386U (en) | 1984-07-31 | 1984-07-31 | Needle thread feeding device of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6131386U true JPS6131386U (en) | 1986-02-25 |
| JPH0331264Y2 JPH0331264Y2 (en) | 1991-07-02 |
Family
ID=30677371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11848384U Granted JPS6131386U (en) | 1984-07-31 | 1984-07-31 | Needle thread feeding device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6131386U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63275384A (en) * | 1987-05-05 | 1988-11-14 | ブラザー工業株式会社 | Sewing machine |
| JPH01212595A (en) * | 1988-02-18 | 1989-08-25 | Brother Ind Ltd | Thread drawing-out control device of sewing-machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5631788A (en) * | 1979-08-22 | 1981-03-31 | Brother Ind Ltd | Automatic cotton toninggup device for straight line final sewing machine and final sewing ornament sewing machine |
-
1984
- 1984-07-31 JP JP11848384U patent/JPS6131386U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5631788A (en) * | 1979-08-22 | 1981-03-31 | Brother Ind Ltd | Automatic cotton toninggup device for straight line final sewing machine and final sewing ornament sewing machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63275384A (en) * | 1987-05-05 | 1988-11-14 | ブラザー工業株式会社 | Sewing machine |
| JPH01212595A (en) * | 1988-02-18 | 1989-08-25 | Brother Ind Ltd | Thread drawing-out control device of sewing-machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0331264Y2 (en) | 1991-07-02 |
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