JPH03111083A - Hook speed adjusting device for sewing machine - Google Patents
Hook speed adjusting device for sewing machineInfo
- Publication number
- JPH03111083A JPH03111083A JP25017589A JP25017589A JPH03111083A JP H03111083 A JPH03111083 A JP H03111083A JP 25017589 A JP25017589 A JP 25017589A JP 25017589 A JP25017589 A JP 25017589A JP H03111083 A JPH03111083 A JP H03111083A
- Authority
- JP
- Japan
- Prior art keywords
- needle
- gear
- hook
- sun gear
- rotation
- 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
- 238000009958 sewing Methods 0.000 title claims abstract description 18
- 230000010355 oscillation Effects 0.000 claims description 12
- 230000007547 defect Effects 0.000 abstract description 5
- 230000003111 delayed effect Effects 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、ＷＭ車な機構のミシンの釜速度調整装置に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hook speed adjusting device for a sewing machine having a WM mechanism.
［従来技術］
従来、揺動台に針棒を装着し、針振の上下動とともに揺
動台の針振りにより千鳥状に縫製する千鳥縫いミシンが
知られている。この従来の千鳥縫いミシンでは、針振と
釜の位相を常に一定にし、釜の剣先が上糸をすくうタイ
ミングを常に一定とするように、釜を針振り方向に移動
させるミシンが提案されている（実開昭６３−１２３２
８３号公報参照）。[Prior Art] Conventionally, a zigzag stitch sewing machine is known in which a needle bar is attached to a swinging table and sewing is performed in a staggered manner by the vertical movement of the needle and the swinging of the needle on the swinging table. In this conventional zigzag sewing machine, a sewing machine has been proposed in which the hook is moved in the needle oscillation direction so that the phase between the needle oscillation and the hook is always constant, and the timing at which the tip of the hook picks up the upper thread is always constant. (Jitsukai Sho 63-1232
(See Publication No. 83).
［発明が解決しようとする課題］
ところで、このように構成されたミシンにおいては、第
３図に示すように、針板１の上に設けられた布２に突き
刺された針３は点線の位置４まで押し込まれた後、針３
が引き抜かれるときに針穴３′を通る上糸を釜の剣先５
ですくうようにしている。ここで、針板１の針通し穴の
ほぼ中間の位置で針３ｂが突き刺された場合では、剣先
５ｂが針穴３′から最適距離ｄｔの位置で上糸をすくう
ため、上糸を確実にすくうことができる。しかしながら
、このミシンにおいては、針振と釜の位相が常に一定し
ているので、釜の進行方向に対して早い位置で針３ａが
突き刺された場合には、剣先５ａは針３ａの針穴３′よ
りかなり上の方の位置。[Problems to be Solved by the Invention] By the way, in the sewing machine configured in this way, as shown in FIG. After being pushed in to 4, needle 3
When the thread is pulled out, the needle thread passing through the needle hole 3' is passed through the tip 5 of the hook.
I try to scoop it up. Here, when the needle 3b is inserted at a position approximately in the middle of the needle hole in the throat plate 1, the needle point 5b scoops up the upper thread at a position at the optimum distance dt from the needle hole 3', so that the upper thread is securely removed. You can scoop it up. However, in this sewing machine, the phase of the needle oscillation and the hook are always constant, so when the needle 3a is inserted at an early position with respect to the direction of movement of the hook, the tip 5a is inserted into the needle hole of the needle 3a. ′ at a position well above.
つまり針穴３′から距離ｄ１の位置で上糸をすくうため
、剣先５ａが上糸をすくうことができず、目飛びなどの
縫製不良が生じることがあった。また、針３ｃの場合に
は、針穴３′と剣先５ｃが上糸をすくう位置の間の距離
ｄ３は非常に小さいため、剣先５ｃが上糸をすくうこと
ができず、目飛びなどの縫製不良が生じることがあった
。In other words, since the upper thread is scooped up at a distance d1 from the needle hole 3', the tip 5a cannot scoop up the upper thread, which may result in sewing defects such as skipped stitches. In addition, in the case of the needle 3c, the distance d3 between the needle hole 3' and the position where the tip 5c scoops up the needle thread is very small, so the tip 5c cannot scoop up the needle thread, resulting in sewing problems such as skipped stitches. Defects may occur.
本発明は、針振と、針振と同期して回転する釜との位相
を針振り量によって調整し、釜の剣先が上糸をすくうタ
イミングを常に一定にすることにより、美しい縫い目を
形成するミシンの釜速度調整装置を提供することを目的
とするものである。The present invention creates beautiful seams by adjusting the phase of the needle oscillation and the hook, which rotates in synchronization with the needle oscillation, by the amount of needle oscillation, and by always keeping the timing at which the tip of the hook scoops up the needle thread constant. The object of the present invention is to provide a hook speed adjusting device for a sewing machine.
［課題を解決するための手段］
本発明は、上記目的を達成するために、主軸の回転によ
って針振を上下動するとともに、針棒揺動台を揺動する
ことにより前記針振を針振り運動をして千鳥縫いを形成
する学＃壽やミシンにおいて、前記主軸の回転とともに
回転され、かつ内周にギアが形成された第１の太陽歯車
と、釜に連結される回転軸に固着され、かつ前記第１の
太陽歯車の歯の数の１７２の歯の数を外周に持つ第２の
太陽歯車と、前記第２の太陽歯車の回転軸に一端が遊嵌
されたギアホルダの他端に回動可能に装着され、かつ前
記第１．第２の太陽歯車と係合される遊星歯車と、前記
針棒揺動台の針振り運動を前記ギアホルダに伝達するレ
バー機構とを有するものである。[Means for Solving the Problems] In order to achieve the above object, the present invention moves the needle oscillation up and down by rotating the main shaft, and also moves the needle oscillation by swinging the needle bar rocking table. In a sewing machine that moves to form a zigzag stitch, a first sun gear that rotates with the rotation of the main shaft and has a gear formed on its inner periphery, and a rotating shaft that is fixed to a rotating shaft that is connected to a hook. , and a second sun gear having 172 teeth on its outer periphery, which is the number of teeth of the first sun gear, and the other end of a gear holder whose one end is loosely fitted to the rotating shaft of the second sun gear. rotatably mounted, and the first. It has a planetary gear that is engaged with the second sun gear, and a lever mechanism that transmits the needle swing motion of the needle bar rocking base to the gear holder.
［作用］
本発明によれば、主軸の回転に同期して第１の太陽歯車
が回転し、この回転を遊星歯車を介して第１の太陽歯車
の２倍の速度で回転する第２の太陽歯車に伝達する。こ
の構成において、遊星歯車の位置が変更されなければ、
第１の太陽歯車の回転速度に対して、第２の太陽歯車は
２倍の回転速度を保って回転する。ここで、針棒の揺動
台の揺動運動に同期してレバー機構によってギアホルダ
を移動し、遊星歯車の位置が変更されると、即ち、遊星
歯車が太陽歯車の回転方向に移動されると。[Operation] According to the present invention, the first sun gear rotates in synchronization with the rotation of the main shaft, and this rotation is reflected by the second sun gear, which rotates at twice the speed of the first sun gear, via the planetary gear. Transmit to gears. In this configuration, if the position of the planetary gear is not changed,
The second sun gear rotates at twice the rotation speed of the first sun gear. Here, when the gear holder is moved by the lever mechanism in synchronization with the swinging movement of the swinging base of the needle bar, and the position of the planetary gear is changed, that is, when the planetary gear is moved in the rotational direction of the sun gear. .
その遊星歯車が移動された分だけ第２の太陽歯車に回転
が伝達されないので、第２の太陽歯車の速度の位相が遅
れ、また、遊星歯車が太陽歯車の回転方向と逆方向に移
動されると、遊星歯車が移動された分だけ、第２の太陽
歯車の回転が増え、第２の太陽歯車の回転の位相が速く
なる。従って、揺動台の針振りに同期して第２の太陽歯
車の回転速度の位相を変化することにより、釜の回転速
度の位相が変化し、針が針板の針通し穴のいずれの位置
を通っても、釜の剣先が上糸をすくうタイミングが一定
となり、美しい縫い目を形成することができる。Since rotation is not transmitted to the second sun gear by the amount that the planet gear is moved, the phase of the speed of the second sun gear is delayed, and the planet gear is moved in the opposite direction to the rotation direction of the sun gear. Then, the rotation of the second sun gear increases by the amount by which the planetary gear is moved, and the phase of rotation of the second sun gear becomes faster. Therefore, by changing the phase of the rotational speed of the second sun gear in synchronization with the needle oscillation of the rocking table, the phase of the rotational speed of the rotary hook changes, and the needle moves to any position in the needle hole in the throat plate. Even when passing through the thread, the timing at which the tip of the hook picks up the upper thread remains constant, creating beautiful seams.
［実施例］
第１図を参照すると１本発明の１実施例の釜速度調整装
置では、主軸６の一方の端部近傍にはずみ車７が固着さ
れ、また、主軸６の他端に釣合錘８及び針棒クランク９
が固着され、針振クランク９は針振１０に針棒抱き１１
によって連結され。[Embodiment] Referring to FIG. 1, in a hook speed adjusting device according to an embodiment of the present invention, a flywheel 7 is fixed near one end of the main shaft 6, and a counterweight is attached to the other end of the main shaft 6. 8 and needle bar crank 9
is fixed, and the needle oscillation crank 9 connects the needle bar holder 11 to the needle oscillation 10.
connected by.
さらに、針１２が固着された針振１０は針棒揺動台１３
に上下動できるように装着されている。また、主軸６に
傘歯車１４が固着され、この傘歯車１４に傘歯車１５が
噛み合わされ、この傘歯車１５の縦軸１６に第１の太陽
歯車１７が固着されている。また、第１の太陽歯車１７
の内側に設けたギアに遊星歯車１８が噛み合わされ、こ
の遊星歯車１８は第１の太陽歯車１７の内側に装着され
た第２の太陽歯車１９の外周に設けたギアと噛み合わさ
れている。なお、第１の太陽歯車１７の歯の数に対して
、第２の太陽歯車１９の歯の数は半分になるように構成
されている。この第２の太陽歯車１９の縦軸２０の他端
に傘歯車２１が固着され、この傘歯車２１に傘歯車２２
が噛み合わされ、傘歯車２２の回転軸２３の先端に釜２
４が固着されている。また、第２の太陽歯車１９の縦軸
２０にギアホルダ２５の一端が回動ヰ能に保持され、こ
のギアホルダ２５の他端に遊星歯車１８が回動可能に装
着されている。このギアホルダ２５にリンク２６の一端
が回動可能に装着され、リンク２６の他端は回動軸２７
で回動可能に支持された回動リンク２８の一端に連結さ
れ、さらに１回動リンク２８の他端の直立部に設けた摺
動軸２９は針棒揺動台１２に設けた二叉部３ｏに摺動自
在に装着されている。Furthermore, the needle oscillator 10 to which the needle 12 is fixed is mounted on a needle bar oscillating table 13.
It is attached so that it can move up and down. Further, a bevel gear 14 is fixed to the main shaft 6, a bevel gear 15 is meshed with the bevel gear 14, and a first sun gear 17 is fixed to a vertical shaft 16 of the bevel gear 15. In addition, the first sun gear 17
A planetary gear 18 is meshed with a gear provided inside the first sun gear 17, and this planetary gear 18 is meshed with a gear provided on the outer periphery of a second sun gear 19 mounted inside the first sun gear 17. Note that the number of teeth on the second sun gear 19 is configured to be half the number of teeth on the first sun gear 17. A bevel gear 21 is fixed to the other end of the vertical shaft 20 of this second sun gear 19, and a bevel gear 22 is attached to this bevel gear 21.
are meshed, and the hook 2 is attached to the tip of the rotating shaft 23 of the bevel gear 22.
4 is fixed. Further, one end of a gear holder 25 is rotatably held on the vertical shaft 20 of the second sun gear 19, and the planetary gear 18 is rotatably mounted on the other end of the gear holder 25. One end of a link 26 is rotatably attached to this gear holder 25, and the other end of the link 26 is attached to a rotation shaft 27.
A sliding shaft 29 is connected to one end of a rotation link 28 which is rotatably supported by the rotation link 28, and a sliding shaft 29 provided at the other end of the upright portion of the rotation link 28 is connected to a two-pronged portion provided on the needle bar rocking table 12. 3o so that it can slide freely.
このように構成された本実施例の釜速度調整装置では、
遊星歯車１８が位置を変更しないときには、主軸６の回
転は第１の太陽歯車１７に伝達され、遊星歯車１８を介
して第２の太陽歯車１９が２倍の速度で回転する。ここ
で、遊星歯車１８が第１．第２の太陽歯車１７．１９の
回転方向と同じ方向に移動すると、遊星歯車１８が移動
した分だけ第２の太陽歯車１９の回転が第１の太陽歯車
１７の回転より遅くなり、釜２４の回転に負の位相差を
生じる。また、遊星歯車１８が第１．第２の太陽歯車１
７．１９の回転方向と反対方向に移動されると、その移
動した分だけ第２の太陽歯車１９を速く回転し、第１の
太陽歯車１７の回転よす速くなって釜２４の正の位相差
を生じる。従って、針揺動台１３の揺動によってギアホ
ルダ２５を移動することにより、第２図に示すように、
針板１上の布２を針１２がいずれの位置で突き刺しても
、釜２４の剣先２４′は針１２の針穴１２′から距離ｄ
の位置で上糸をすくうため、目飛びなどの縫製不良が生
じることはない。In the hook speed adjusting device of this embodiment configured as described above,
When the planetary gear 18 does not change its position, the rotation of the main shaft 6 is transmitted to the first sun gear 17, and the second sun gear 19 rotates at twice the speed via the planetary gear 18. Here, the planetary gear 18 is the first. When moving in the same direction as the rotation direction of the second sun gear 17, 19, the rotation of the second sun gear 19 becomes slower than the rotation of the first sun gear 17 by the amount that the planetary gear 18 moves, and the rotation of the rotor 24 becomes slower. Creates a negative phase difference in rotation. Also, the planetary gear 18 is the first. Second sun gear 1
7. When the rotation direction of 19 is moved in the opposite direction, the second sun gear 19 is rotated faster by the amount of movement, and the rotation of the first sun gear 17 becomes faster and the positive position of the hook 24 is increased. Causes a phase difference. Therefore, by moving the gear holder 25 by swinging the needle swinging table 13, as shown in FIG.
No matter where the needle 12 pierces the cloth 2 on the throat plate 1, the point 24' of the hook 24 is at a distance d from the needle hole 12' of the needle 12.
Since the upper thread is scooped up at this position, sewing defects such as skipped stitches will not occur.
［発明の効果］
本発明は、以上のように構成されているので、針棒の揺
動に対して、同期して釜の速度の位相差が変更され、従
って、針が上糸をすくう位置が針穴から常に一定の距離
となり、釜の剣先で常に上糸をすくうことができ、目飛
びなどの縫製不良を生じないという利点がある。[Effects of the Invention] Since the present invention is configured as described above, the phase difference in the speed of the hook is changed in synchronization with the swinging of the needle bar, and therefore the position where the needle scoops the upper thread is adjusted. is always at a constant distance from the needle hole, and the needle thread can always be scooped up with the tip of the hook, which has the advantage of preventing sewing defects such as skipped stitches.
第１図は本発明の１実施例のミシンの釜速度調整装置の
斜視図、第２図は第１の装置における針と剣先の関係を
示した図、第３図は従来の装置における針と剣先の関係
を示した図である。６・・・主軸、７・・・はずみ車、
８・・・釣合錘、９・・・針棒クランク、１０・・・針
棒、１１・・・針棒抱き、１２・・・針、１３・・・針
棒揺動台、１４．１５・・・傘歯車。
１６・・・縦軸、１７・・・第１の太陽歯車、１８・・
・遊星歯車、１９・・・第２の太陽歯車、２０・・・縦
軸、２１．２２・・・傘歯車、２３・・・回転軸、２４
・・・釜、２５・・・ギアホルダ、２６・・・リンク、
２７・・・回動軸、２８・・・回動リンク、２９・・・
摺動軸、３０・・・二叉部。Fig. 1 is a perspective view of a hook speed adjusting device of a sewing machine according to an embodiment of the present invention, Fig. 2 is a diagram showing the relationship between the needle and the tip of the needle in the first device, and Fig. 3 is a diagram showing the relationship between the needle and the point in the conventional device. It is a diagram showing the relationship between the points of the sword. 6... Main shaft, 7... Flywheel,
8... Counterweight, 9... Needle bar crank, 10... Needle bar, 11... Needle bar holder, 12... Needle, 13... Needle bar rocking base, 14.15 ...Bevel gear. 16... Vertical axis, 17... First sun gear, 18...
- Planetary gear, 19... Second sun gear, 20... Vertical axis, 21.22... Bevel gear, 23... Rotating shaft, 24
... Hook, 25 ... Gear holder, 26 ... Link,
27...Rotation axis, 28...Rotation link, 29...
Sliding shaft, 30...two prongs.
Claims (1)
棒揺動台を揺動することにより前記針棒を針振り運動し
て千鳥縫いを形成するミシンにおいて、前記主軸の回転
とともに回転され、かつ内周にギアが形成された第１の
太陽歯車と、釜に連結される回転軸に固着され、かつ前
記第１の太陽歯車の歯の数の１／２の歯の数を外周に持
つ第２の太陽歯車と、前記第２の太陽歯車の回転軸に一
端が遊嵌されたギアホルダの他端に回動可能に装着され
、かつ前記第１、第２の太陽歯車と係合される遊星歯車
と、前記針棒揺動台の針振り運動を前記ギアホルダに伝
達するレバー機構とを有することを特徴とするミシンの
釜速度調整装置。1. A sewing machine in which a needle bar is moved up and down by the rotation of a main shaft, and a needle bar is oscillated by swinging a needle bar oscillation table to form a zigzag stitch, which is rotated with the rotation of the main shaft, and a first sun gear having a gear formed on its inner periphery; and a first sun gear fixed to a rotating shaft connected to the hook and having a number of teeth on its outer periphery that is half the number of teeth of the first sun gear. a second sun gear, and a planet rotatably attached to the other end of a gear holder whose one end is loosely fitted to the rotating shaft of the second sun gear, and which is engaged with the first and second sun gears. 1. A hook speed adjusting device for a sewing machine, comprising a gear and a lever mechanism that transmits needle swinging motion of the needle bar swinging base to the gear holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25017589A JPH0728976B2 (en) | 1989-09-26 | 1989-09-26 | Sewing machine speed adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25017589A JPH0728976B2 (en) | 1989-09-26 | 1989-09-26 | Sewing machine speed adjustment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03111083A true JPH03111083A (en) | 1991-05-10 |
| JPH0728976B2 JPH0728976B2 (en) | 1995-04-05 |
Family
ID=17203935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25017589A Expired - Lifetime JPH0728976B2 (en) | 1989-09-26 | 1989-09-26 | Sewing machine speed adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0728976B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619035A (en) * | 2012-04-14 | 2012-08-01 | 浙江银工缝纫机有限公司 | Swing mechanism for needle range of straight buttonholing machines |
| US9050745B2 (en) * | 2013-02-22 | 2015-06-09 | Panasonic Intellectual Property Management Co., Ltd. | In-mold decoration molding method and in-mold decoration molding machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008212383A (en) | 2007-03-05 | 2008-09-18 | Brother Ind Ltd | Sewing machine |
| JP5821080B2 (en) | 2008-06-06 | 2015-11-24 | 株式会社ミドリ安全縫技研究所 | sewing machine |
-
1989
- 1989-09-26 JP JP25017589A patent/JPH0728976B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619035A (en) * | 2012-04-14 | 2012-08-01 | 浙江银工缝纫机有限公司 | Swing mechanism for needle range of straight buttonholing machines |
| US9050745B2 (en) * | 2013-02-22 | 2015-06-09 | Panasonic Intellectual Property Management Co., Ltd. | In-mold decoration molding method and in-mold decoration molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0728976B2 (en) | 1995-04-05 |
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