JPS6311917B2 - - Google Patents
Info
- Publication number
- JPS6311917B2 JPS6311917B2 JP56124395A JP12439581A JPS6311917B2 JP S6311917 B2 JPS6311917 B2 JP S6311917B2 JP 56124395 A JP56124395 A JP 56124395A JP 12439581 A JP12439581 A JP 12439581A JP S6311917 B2 JPS6311917 B2 JP S6311917B2
- Authority
- JP
- Japan
- Prior art keywords
- feed
- feed adjustment
- shaft
- cam
- amount
- 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.)
- Expired
Links
- 239000004744 fabric Substances 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000009958 sewing Methods 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【発明の詳細な説明】
本発明は、ミシンの布送り機構に関し、特に、
縫い終わりの布送り量を減少させるミシンの布送
り機構に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cloth feeding mechanism for a sewing machine, and in particular,
The present invention relates to a fabric feed mechanism of a sewing machine that reduces the amount of fabric feed at the end of sewing.
従来、布の裁断方法や布の折り曲げ方法に起因
して、第１図に示すように、縫い目の末端と加工
布端との間に残す長さ＝布端し残り長さ（ぬのは
しのこりながさ）Ａ・Ｂを所望範囲に安定させる
には、縫製末端附近で、送り調節ダイヤル等で送
り量を減少させたうえ、手廻しで、あるいは足踏
みペダルを瞬間踏入して上軸を一回転させ、最終
針落ち位置を補正縫い（Ｓ）していた。しかし、
これは非常にわずらわしく、時間的にもロスが多
く煩雑であつた。 Conventionally, due to the fabric cutting method and fabric folding method, as shown in Figure 1, the length left between the end of the seam and the processed fabric edge = fabric edge remaining length (Nunohashi) In order to stabilize A and B within the desired range, reduce the feed amount using the feed adjustment dial, etc. near the end of the sewing, and turn the upper shaft once by hand or by momentarily depressing the foot pedal. Then, the final needle drop position was corrected (S). but,
This was extremely troublesome and involved a lot of time loss.
本発明では、送り変換レバーの１作動で、安定
した前記布端し残り長さが得られるように計られ
たものである。 The present invention is designed so that a stable remaining length of the cloth edge can be obtained with one operation of the feed conversion lever.
以下、本発明の実施例を添附図面にもとづいて
説明する。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
第２図において、１はミシン頭部で、２は上
軸、３は上軸２にセツトされた偏心カムで、４は
その上部が偏心カム３に遊嵌された水平送りロツ
ドである。５は送り調節器でベツド下面の軸６上
に遊嵌され、該軸６の前方左右には軸７が夫々設
けられる（左方は図示なし）。 In FIG. 2, 1 is a sewing machine head, 2 is an upper shaft, 3 is an eccentric cam set on the upper shaft 2, and 4 is a horizontal feed rod whose upper part is loosely fitted to the eccentric cam 3. A feed adjuster 5 is loosely fitted onto a shaft 6 on the underside of the bed, and shafts 7 are provided on the left and right sides in front of the shaft 6 (the left side is not shown).
而して、前記軸７の夫々には内側に夫々送りリ
ンク８，８′の前側が遊嵌され、その後側は前記
送り調節器５内に位置する軸９に遊嵌される。前
記軸９上には送りリンク８，８′より内側に向け
夫々水平駆動ロツド１０，１０′が、また中央に
前記水平送りロツド４の下部が遊嵌される。 The front sides of feed links 8 and 8' are loosely fitted inside each of the shafts 7, and the shafts 9 located inside the feed adjuster 5 are loosely fitted on the rear sides thereof. Horizontal drive rods 10 and 10' are fitted on the shaft 9 toward the inside of the feed links 8 and 8', respectively, and the lower part of the horizontal feed rod 4 is loosely fitted in the center.
而して、水平駆動ロツド１０，１０′の前方部
は中間に布送り歯に連結される水平送り腕１１が
配置され、共に図示せぬ軸上にて作動連結され
る。 A horizontal feed arm 11 connected to a cloth feed tooth is disposed in the middle of the front portion of the horizontal drive rods 10, 10', and both are operatively connected on a shaft (not shown).
１２は送り調節カムで、係合腕１２ａ、カム面
１２ｂ，１２ｃが形成され、アーム適所に軸支さ
れ一端に逆縫二又１３が固着されたカム軸１４と
結合する。１５は送り調節ダイヤルで、その軸頭
１５ａが前記送り調節カム１２のカム面に対向進
退し、送り量が調整されることは公知の通りであ
る。 Reference numeral 12 designates a feed adjustment cam, which is formed with an engaging arm 12a and cam surfaces 12b and 12c, and is coupled to a cam shaft 14, which is pivotally supported at an appropriate position and has a reverse stitch fork 13 fixed to one end thereof. Reference numeral 15 denotes a feed adjustment dial, and as is well known, the shaft head 15a moves back and forth in opposition to the cam surface of the feed adjustment cam 12 to adjust the feed amount.
１６は送り調節ロツドで、その上方は送り調節
カム１２に固設された軸１７に、またその下方は
前記送り調節器の右方の軸７に遊嵌される。 Reference numeral 16 designates a feed adjustment rod, whose upper portion is loosely fitted to a shaft 17 fixed to the feed adjustment cam 12, and its lower portion is loosely fitted to the right shaft 7 of the feed adjuster.
１８は送り変換腕で、最大正送り量としたとき
の送り調節カム１２の係合腕１２ａに若干離間し
対向する送り変換腕軸１９を持ち、アームに軸支
されるレバー軸２０の一端に結合されてスプリン
グ２１により時計方向に附勢される。２２は把手
部がアーム外に延びた送り変換レバーで、その基
部は前記レバー軸２０の他端に固着される。 Reference numeral 18 denotes a feed conversion arm, which has a feed conversion arm shaft 19 facing the engagement arm 12a of the feed adjustment cam 12 with a slight distance from it when the maximum normal feed amount is set, and has a feed conversion arm shaft 19 at one end of a lever shaft 20 that is pivotally supported by the arm. They are connected and urged clockwise by a spring 21. Reference numeral 22 denotes a feed conversion lever whose handle extends outside the arm, and its base is fixed to the other end of the lever shaft 20.
而して、２３は送り変換レバー２２のストツパ
である。２４は逆縫い駆動板でその先端部のピン
２５は逆縫二又１３に嵌合し、スプリング２６に
より時計方向への附勢をうけ、２７は電磁ソレノ
イドである。 23 is a stopper for the feed conversion lever 22. Reference numeral 24 designates a reverse stitch driving plate, and a pin 25 at its tip fits into the reverse stitch fork 13, and is biased clockwise by a spring 26. 27 is an electromagnetic solenoid.
２８は、その指針部２８ａを上下に位置変向可
能としたスイツチ取付板で、スイツチ２９、レバ
ーストツパ３０、プランジヤ３１が組付構成さ
れ、３２は前記指針２８ａと協調する補正送り目
盛である。 Reference numeral 28 denotes a switch mounting plate which allows the pointer portion 28a to be moved up and down, on which a switch 29, a lever stopper 30, and a plunger 31 are assembled, and 32 is a correction feed scale that cooperates with the pointer 28a.
尚、本発明の布送り作動を満足すべく、装置中
には第３図に示す別の電気回路が直列に設けら
れ、第４図はそのタイムチヤートを示すものであ
る。 In order to satisfy the cloth feeding operation of the present invention, another electric circuit shown in FIG. 3 is provided in series in the apparatus, and FIG. 4 shows its time chart.
本発明の布送り機構は上記の如くにしてなり、
次に、その作用効果について述べる。 The cloth feeding mechanism of the present invention is constructed as described above,
Next, we will discuss its effects.
第２図示の状態ではスプリング２６の作用力に
より送り調節カム１２のカム面１２ｂと送り調節
ダイヤル１５の軸頭１５ａとが圧接し、送り調節
器５の軸７を上方の一定位置に維持している。こ
の状態（電磁ソレノイド２７）でミシンが運転さ
れると、偏心カム３の作用で水平送りロツド４が
上下動し、水平駆動ロツド１０，１０′を介する
水平送り腕１１の作動と、図示せぬ上下送り機構
との協同作用で布を正方向へ送る。この状態から
電磁ソレノイド２７をON状態にすると布は逆方
向に送られる。 In the state shown in the second figure, the cam surface 12b of the feed adjustment cam 12 and the shaft head 15a of the feed adjustment dial 15 are brought into pressure contact with each other by the acting force of the spring 26, and the shaft 7 of the feed adjustment device 5 is maintained at a fixed position above. There is. When the sewing machine is operated in this state (electromagnetic solenoid 27), the horizontal feed rod 4 moves up and down under the action of the eccentric cam 3, and the horizontal feed arm 11 is operated via the horizontal drive rods 10, 10', and Feeds the cloth in the forward direction through cooperation with the vertical feed mechanism. When the electromagnetic solenoid 27 is turned on from this state, the cloth is fed in the opposite direction.
即ち、逆縫い駆動板２４の反時計方向移行に伴
い、逆縫二又１３、送り調節カム１２を介し送り
調節ロツド１６の下部支軸７は下方の一定位置に
維持され、送り調節ダイヤル１５の軸頭１５ａは
送り調節カムのカム面１２ｃ側に圧接せしめられ
る。 That is, as the reverse stitch drive plate 24 moves counterclockwise, the lower support shaft 7 of the feed adjustment rod 16 is maintained at a constant downward position via the reverse stitch fork 13 and the feed adjustment cam 12, and the feed adjustment dial 15 is moved downward. The shaft head 15a is brought into pressure contact with the cam surface 12c side of the feed adjustment cam.
このことは、水平送りロツド４の上下動に対す
る水平駆動ロツド１０，１０′と水平送り腕１１
との関係が前記正方向送り時とは逆になり布は逆
方向に送られるわけである。この正逆布送りの選
択は電磁ソレノイド２７のON、OFFにより行い
得る。 This means that the horizontal drive rods 10, 10' and the horizontal feed arm 11 are
The relationship is reversed from that during forward feeding, and the cloth is fed in the opposite direction. This selection of forward and reverse cloth feeding can be made by turning the electromagnetic solenoid 27 ON and OFF.
第２図示の正送り状態において、加工布に残す
べき布端し残り長さ前方附近に縫いが到達した
際、運針を停止して送り変換レバー２２をレバー
ストツパ３０で停止するまで押し下げると、送り
調節カム１２が時計方向に回移し送り量が減少す
る状態になる。この減少量はスイツチ取付板２８
の指針２８ａにより補正送り目盛３２のいずれを
選ぶかにより定まる。この状態と同時にスイツチ
２９が働き、第３〜４図示の電気回路の作用で上
軸が少くとも一回転せしめられる。 In the normal feed state shown in the second figure, when the stitch reaches the front of the remaining length of the material to be left on the workpiece cloth, stop needle movement and press down the feed conversion lever 22 until it stops with the lever stopper 30 to adjust the feed. The cam 12 rotates clockwise and the feed amount decreases. This reduction amount is due to the switch mounting plate 28.
It is determined by which one of the correction feed scales 32 is selected using the pointer 28a. Simultaneously with this state, the switch 29 operates, and the upper shaft is rotated at least once by the action of the electric circuit shown in Figures 3 and 4.
従つて、この送り変換レバーの１作動で選択し
た減少量の縫いが少くも一針は補正縫いＳを縫製
できるので、加工布に所望の安定した布端し残り
長さを残すことができる。 Therefore, with one operation of the feed conversion lever, at least one correction stitch S can be sewn with the selected reduction amount, so that the desired stable cloth edge and remaining length can be left on the workpiece cloth.
以上述べた如く、本発明布送り機構によれば、
送り変換レバーの１作動で、送りを補正送り量に
変換できると同時に、マイクロスイツチ等にて、
少くともミシンを一回転させ、布端し残り長さの
バラツキを補正することができるので、作業上の
煩わしさや時間的ロスを解消し得、合理的に良好
な縫製効果を挙げることができる。 As described above, according to the cloth feeding mechanism of the present invention,
With one operation of the feed conversion lever, the feed can be converted to the corrected feed amount, and at the same time, with a micro switch, etc.
Since the sewing machine can be rotated at least once to correct for variations in the remaining length of the fabric edge, it is possible to eliminate operational hassle and time loss, and to achieve reasonably good sewing effects.
第１図は加工布の縫製状態図、第２図は本発明
布送り機構のミシン頭部に組込まれた俯瞰説明
図、第３図は電気回路のブロツク図、第４図は第
３図のタイムチヤート図である。
２……上軸、４……水平送りロツド、５……送
り調節器、８……送りリンク、１０……水平駆動
ロツド、１１……水平送り腕、１２……送り調節
カム、１５……送り調節ダイヤル、１４……送り
変換腕軸、１６……送り調節ロツド、１８……送
り変換腕、２２……送り変換レバー、２４……逆
縫い駆動板、２７……電磁ソレノイド、２９……
スイツチ。
Fig. 1 is a diagram of the sewing state of the work cloth, Fig. 2 is an overhead view of the fabric feed mechanism of the present invention incorporated in the sewing machine head, Fig. 3 is a block diagram of the electric circuit, and Fig. 4 is the same as Fig. 3. It is a time chart. 2...Upper shaft, 4...Horizontal feed rod, 5...Feed adjuster, 8...Feed link, 10...Horizontal drive rod, 11...Horizontal feed arm, 12...Feed adjustment cam, 15... Feed adjustment dial, 14... Feed conversion arm shaft, 16... Feed adjustment rod, 18... Feed conversion arm, 22... Feed conversion lever, 24... Reverse stitch drive plate, 27... Electromagnetic solenoid, 29...
Switch.
Claims (1)
節ダイヤル１５の軸頭１５ａと作用的に連結され
たカム面１２ｂを備え、前記送り調節ダイヤル１
５が所定量回転操作されると該回転操作量に応じ
た量だけ回動変移して布の水平送り量を変化せし
める送り調節カム１２： 該送り調節カム１２の係合腕１２ａと離間して
対向する軸１９を備え、スプリング２１の上方向
への付勢力によりストツパ２３と係合させられて
定位置に保持されているときは、前記送り調節ダ
イヤル１５の操作に伴う前記送り調節カム１２の
回動変移があつても前記軸１９は前記係合腕１２
ａと係合しない送り変換レバー２２： 該送り変換レバー２２との間の離間量を任意に
設定出来るように該送り変換レバー２２の下方に
設けられた取付板２８：ならびに 該取付板２８上に設置され、オンされると上軸
２を一回転せしめるスイツチ２９： を有し、前記送り変換レバー２２を前記スプリン
グ２１の付勢力に抗して下方向に所定量回動変移
させたとき、前記スイツチ２９がオンされると同
時に、前記軸２０が、前記送り調節ダイヤル１５
をそのままの状態にしておいて、前記送り調節カ
ム１２と係合して該送り調節カム１２を回動変移
させて前記布の水平送り量を減少させるようにし
たミシンの布送り機構。[Claims] 1. Feed adjustment dial 15: comprises an engaging arm 12a extending downward and a cam surface 12b operatively connected to the shaft head 15a of the feed adjustment dial 15;
5 is rotated by a predetermined amount, the feed adjustment cam 12 rotates by an amount corresponding to the rotational operation amount to change the horizontal feed amount of the cloth. When the feed adjustment cam 12 is provided with opposing shafts 19 and is engaged with the stopper 23 and held in place by the upward biasing force of the spring 21, the feed adjustment cam 12 is moved in response to the operation of the feed adjustment dial 15. Even if there is rotational displacement, the shaft 19
Feed conversion lever 22 that does not engage with a: A mounting plate 28 provided below the feed conversion lever 22 so that the distance between the feed conversion lever 22 and the feed conversion lever 22 can be arbitrarily set; and a mounting plate 28 on the mounting plate 28. a switch 29 that rotates the upper shaft 2 once when it is installed and turned on; At the same time that the switch 29 is turned on, the shaft 20 is turned on by the feed adjustment dial 15.
The fabric feed mechanism of the sewing machine is configured to engage with the feed adjustment cam 12 and rotationally displace the feed adjustment cam 12 to reduce the horizontal feed amount of the fabric while the feed adjustment cam 12 remains in that state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12439581A JPS5825194A (en) | 1981-08-07 | 1981-08-07 | Cloth sending mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12439581A JPS5825194A (en) | 1981-08-07 | 1981-08-07 | Cloth sending mechanism of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5825194A JPS5825194A (en) | 1983-02-15 |
| JPS6311917B2 true JPS6311917B2 (en) | 1988-03-16 |
Family
ID=14884361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12439581A Granted JPS5825194A (en) | 1981-08-07 | 1981-08-07 | Cloth sending mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5825194A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6171095A (en) * | 1985-08-20 | 1986-04-11 | ブラザー工業株式会社 | Sewing apparatus |
| JPS62129095A (en) * | 1985-11-29 | 1987-06-11 | ジューキ株式会社 | One-needle stitch apparatus of sewing machine |
| JPH088386Y2 (en) * | 1991-05-30 | 1996-03-06 | 東京瓦斯株式会社 | Pipe joint structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5465653A (en) * | 1977-10-31 | 1979-05-26 | Singer Co | Workpiece feed mechanism for sewing machine |
-
1981
- 1981-08-07 JP JP12439581A patent/JPS5825194A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5465653A (en) * | 1977-10-31 | 1979-05-26 | Singer Co | Workpiece feed mechanism for sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5825194A (en) | 1983-02-15 |
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