JPS5841878B2 - Rotating zigzag sewing machine - Google Patents
Rotating zigzag sewing machineInfo
- Publication number
- JPS5841878B2 JPS5841878B2 JP54095494A JP9549479A JPS5841878B2 JP S5841878 B2 JPS5841878 B2 JP S5841878B2 JP 54095494 A JP54095494 A JP 54095494A JP 9549479 A JP9549479 A JP 9549479A JP S5841878 B2 JPS5841878 B2 JP S5841878B2
- Authority
- JP
- Japan
- Prior art keywords
- needle bar
- shaft
- rotating arm
- frame
- rotating
- 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
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【発明の詳細な説明】
この発明は、縫い方向を３６０°自由に変えうるように
構成されたジグザグ（千鳥縫い）ミシン、更に詳しくは
ジグザグミシンのアームに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a zigzag (zigzag) sewing machine configured to freely change the sewing direction through 360 degrees, and more particularly to an arm of the zigzag sewing machine.
ジグザグミシンを搭載した布団綴じミシンは、布団の移
動方向がかわった場合、千鳥縫いを正しく行うために布
団Ｏ方向転換に追従してジグザグミシンを旋回させる必
要がある。In a futon binding sewing machine equipped with a zigzag sewing machine, when the moving direction of the futon changes, it is necessary to rotate the zigzag sewing machine to follow the change in the direction of the futon O in order to perform zigzag stitches correctly.
この点を満足するために、従来においては、ジグザグミ
シンの旋回制御系にいろいろな工夫がなされ、それなり
の効果をあげているが、固定式のジグザグミシンをその
まま或いはこれに近いかたちで旋回自在に支持して用い
ているため、旋回の中心から離れた位置に重・心があっ
てその片寄りが大きく、したがってジグザグミシンの旋
回時に大きな慣性が生じて円滑な作動が損われる欠点が
ある。In order to satisfy this point, in the past, various improvements have been made to the rotation control system of zigzag sewing machines, and they have achieved certain effects. Since the zigzag sewing machine is used in a supported manner, the center of gravity is located far from the center of rotation, and the center of gravity is largely offset.Therefore, when the zigzag sewing machine rotates, a large amount of inertia is generated, which impairs smooth operation.
このため、特公昭５４−５３３４号公報に見るように、
バランスウェイトを取り付けて上記の問題点の解決をは
かつているが、その分ミシンの重量が重くなり、別の面
で円滑な作動が阻害されるため、好ましい解決策ではな
い。For this reason, as seen in Japanese Patent Publication No. 54-5334,
Attempts have been made to solve the above problems by attaching a balance weight, but this increases the weight of the sewing machine and impedes smooth operation in other respects, so this is not a desirable solution.
この発明は、旋回の中心におかれた針棒の左右に、上記
針棒を上下に動かす針棒用クランク機構と、針棒を左右
に回動させるもう一つのクランク機構をそれぞれ設備す
ることにより重心の片寄りを町反的になくして従来の欠
点を解決したもので、旋回作動が円滑で故障も少ないジ
グザグミシンを提供することを目的とする。This invention is achieved by installing a needle bar crank mechanism that moves the needle bar up and down and another crank mechanism that rotates the needle bar left and right on each side of the needle bar placed at the center of rotation. The purpose of the present invention is to provide a zigzag sewing machine which solves the conventional drawbacks by eliminating the bias of the center of gravity in a vertical manner, and which has smooth turning operation and fewer failures.
以下この発明を図面を参照して詳細に説明する。The present invention will be explained in detail below with reference to the drawings.
添付図面はこの発明の一実施例を示すもので１はフレー
ムである。The accompanying drawings show one embodiment of the present invention, and numeral 1 indicates a frame.
このフレーム１の上部中央には支持軸２が垂直に取り付
けられ、フレーム１を水平な面内で回転自在に支持する
ようになっている。A support shaft 2 is vertically attached to the center of the upper part of the frame 1, and supports the frame 1 rotatably within a horizontal plane.
またフレーム１の上記支持軸２の中心線Ｏの近くには回
動腕３が垂直な面内で回動自在に軸ピン４で取り付けら
れている。Further, near the center line O of the support shaft 2 of the frame 1, a rotating arm 3 is attached with a shaft pin 4 so as to be rotatable in a vertical plane.
この回動腕３には、針棒５が軸孔６，７に挿入されて回
動腕３の軸方向に移動自在に取り付けられ、支持軸２の
中心線０を含む垂直な面内で上記軸ビン４を支点に回動
腕３によって第１図で左右に動かされるように構成され
ている。A needle bar 5 is inserted into the shaft holes 6 and 7 and is attached to the rotating arm 3 so as to be movable in the axial direction of the rotating arm 3. It is configured so that it can be moved left and right in FIG. 1 by a rotating arm 3 about a shaft pin 4 as a fulcrum.
一方、フレーム１の上記針棒５を中心とする第１図にお
いて右側には、針棒５を回動腕３に対して上下させる針
棒用クランク機構８が設けられ、また左側には前記回動
腕３を軸ピン４を支点に針棒５とともに左右に回動させ
る回動腕用クランク機構９が設けられている。On the other hand, a needle bar crank mechanism 8 for moving the needle bar 5 up and down with respect to the rotating arm 3 is provided on the right side of the frame 1 in FIG. A rotating arm crank mechanism 9 is provided for rotating the moving arm 3 to the left and right together with the needle bar 5 about the shaft pin 4 as a fulcrum.
上記針棒用クランク機構８は、フレーム１に設けられた
軸受け１０に水平に軸支された回転軸１１と、この回転
軸１１の一側の端部に固着されたクランク輪１２と、こ
のクランク輪１２に固着されたクランク軸１３と、この
クランク軸１３の先端に回転自在に取り付けられた連接
棒１４と、この連接棒１４の自由端（下端）に設けられ
た挿入孔１５に、周方向に回転自在にかつ軸方向に移動
自在に挿入されて前記針棒５に自在継手１６で連結され
た連結軸１７と、連接棒１４をその挿入孔１５の部分に
取り付けられたスライダ１８を介してガイド溝１９に沿
って案内する案内部材２０とから構成され、回転軸１１
を回転させるとクランク輪１２が回転して連接棒１４が
上下し、連結軸１７を介して針棒５を上下させる構造に
なっている。The needle bar crank mechanism 8 includes a rotating shaft 11 horizontally supported by a bearing 10 provided on the frame 1, a crank ring 12 fixed to one end of the rotating shaft 11, and a crank ring 12 fixed to one end of the rotating shaft 11. A crankshaft 13 fixed to the ring 12, a connecting rod 14 rotatably attached to the tip of the crankshaft 13, and an insertion hole 15 provided at the free end (lower end) of the connecting rod 14 in the circumferential direction. A connecting shaft 17 is rotatably and axially movably inserted into the needle bar 5 and connected to the needle bar 5 by a universal joint 16, and the connecting rod 14 is inserted through a slider 18 attached to the insertion hole 15 of the connecting shaft 17. a guide member 20 that guides along a guide groove 19;
When rotated, the crank wheel 12 rotates, the connecting rod 14 moves up and down, and the needle bar 5 is moved up and down via the connecting shaft 17.
また、回動腕用クランク機構９は、後述するように回転
軸１１に同期して回転させられる溝カム２１と、この溝
カム２１のカム溝２２（第３図）に先端の突子（ローラ
）２３を嵌め入れて、フレーム１の軸受け２４に軸支し
た回動軸２５にその板端を固着して設けられた回動アー
ム２６と、上記回動軸２５の先端に固着された揺動アー
ム２７と、この揺動アーム２７の案内溝２８に移動自在
に嵌め入れられた可動駒２９と、この可動駒２９の小軸
３０に一側の端部を嵌合し他側の端部を止めねじ３１に
よって回動腕３に止められて酊動駒２９に回動腕３を連
結している連結アーム３２とから構成され、溝カム２１
を回転させると、回動アーム２６が回動して回動軸２５
とともに揺動アーム２７を左右に回動させ、連結アーム
３２を介して回動腕３を軸ピン４を支点に左右に動かす
構造になっている。The rotary arm crank mechanism 9 also includes a grooved cam 21 that is rotated in synchronization with the rotating shaft 11 as described later, and a protrusion (roller) at the tip of the grooved cam 21 in a cam groove 22 (FIG. 3). ) 23, and a rotating arm 26 whose plate end is fixed to a rotating shaft 25 supported by a bearing 24 of the frame 1, and a swinging arm 26 fixed to the tip of the rotating shaft 25. An arm 27, a movable piece 29 movably fitted into the guide groove 28 of the swinging arm 27, and one end of the movable piece 29 fitted into the small shaft 30 and the other end thereof fitted. A connecting arm 32 is fixed to the rotating arm 3 by a set screw 31 and connects the rotating arm 3 to the driving piece 29.
When rotated, the rotating arm 26 rotates and the rotating shaft 25
At the same time, the swing arm 27 is rotated left and right, and the swing arm 3 is moved left and right using the shaft pin 4 as a fulcrum via the connecting arm 32.
なお、第１図と第３図は回動軸２５の中心に小軸３０が
きている直線縫いの状態を示すもので、上記のように回
動腕３を動かして千鳥縫いを行う場合は、シリンダ３３
等により呵動駒２９を回動軸２５の位置から上に移動さ
せる。Note that FIGS. 1 and 3 show straight stitching with the small shaft 30 centered on the rotating shaft 25. When performing zigzag stitches by moving the rotating arm 3 as described above, cylinder 33
etc., to move the sliding piece 29 upward from the position of the rotating shaft 25.
更にまた、上記の回転軸１１は、支持軸２に回転自在に
軸着された駆動歯車３４に、中間歯車３５、フレーム１
の軸受け３６に軸支された縦軸３７、傘歯車３８．３９
を介して連絡され、また前記の溝カム２１は、フレーム
１の軸受け４０に軸支された水平軸４１、ウオーム歯車
４２、ウオーム４３、フレーム１の軸受け４４に軸支さ
れた中間軸４５、タイミングプーリ４６、タイミングベ
ルト４７、タイミングプーリ４８を弁して回転軸１１に
連絡されている。Furthermore, the rotating shaft 11 has a drive gear 34 rotatably attached to the support shaft 2, an intermediate gear 35, and a frame 1.
A vertical shaft 37 supported by a bearing 36, a bevel gear 38, 39
The grooved cam 21 is connected to a horizontal shaft 41 which is supported by a bearing 40 of the frame 1, a worm gear 42, a worm 43, an intermediate shaft 45 which is supported by a bearing 44 of the frame 1, and a timing shaft. A pulley 46, a timing belt 47, and a timing pulley 48 are connected to the rotating shaft 11 through valves.
したがって、駆動歯車３４を支持軸２に対して所要の駆
動装置（図示せず）により回転させると、回転軸１１が
回転するとともに、この回転軸１１の回転に連動して溝
カム２１が回転する。Therefore, when the drive gear 34 is rotated with respect to the support shaft 2 by a required drive device (not shown), the rotation shaft 11 rotates, and the grooved cam 21 rotates in conjunction with the rotation of the rotation shaft 11. .
なお、図のものは、ミシンから離れた位置に設けられた
駆動装置によって、タイミングベルト４９とタイミング
プーリ５０を介して駆動歯車３４を回すようになってい
るが、パルスモータにより直接駆動歯車３４を回すよう
にするなど他の構造をとることもできる。In the illustrated example, the drive gear 34 is rotated via a timing belt 49 and a timing pulley 50 by a drive device installed at a distance from the sewing machine, but the drive gear 34 is rotated directly by a pulse motor. Other structures, such as a rotating structure, can also be used.
しかして、５３はフレーム１に固定された案内突子であ
り、回動腕３の下端部に設けられた長孔５４内に挿入さ
れて回動腕３を案内する。Reference numeral 53 designates a guide protrusion fixed to the frame 1, which is inserted into an elongated hole 54 provided at the lower end of the rotating arm 3 to guide the rotating arm 3.
また、５１はクランク軸１３の作用によって動かされて
周知のように糸天秤（図示せず）を作動させる受動部材
、５２は中間軸４５により作動させられて布押え（図示
せず）をこれも周知のように動かすクランクである。Further, 51 is a passive member which is moved by the action of the crankshaft 13 to operate a thread take-up (not shown) as is well known, and 52 is a passive member which is actuated by an intermediate shaft 45 to operate a cloth presser foot (not shown). As is well known, it is a crank that moves the machine.
次に上記のように構成されたこの発明に係る旋回式ジグ
ザグミシンの作用を説明する。Next, the operation of the rotating zigzag sewing machine according to the present invention constructed as described above will be explained.
第１図と第３図は前に述べたように回動軸２５の中心で
小軸３０がシリンダ３３によって固定されている直線縫
いの状態を示すもので、この状態で駆動歯車３４を回転
させると、針棒用クランク機構８のみが作動して（回動
腕用クランク機構９は回動軸２５の中心に小軸３０が位
置しているため作用しない）針棒５を上下させ、布（図
示せず）を直線縫いする。1 and 3 show the state of straight stitching in which the small shaft 30 is fixed by the cylinder 33 at the center of the rotating shaft 25, as described above, and in this state the drive gear 34 is rotated. Then, only the needle bar crank mechanism 8 operates (the rotating arm crank mechanism 9 does not work because the small shaft 30 is located in the center of the rotating shaft 25) to move the needle bar 5 up and down, and the cloth ( (not shown) in a straight line.
この直線縫いの場合は、布の縫い方向がかわってもフレ
ーム１をその方向に旋回させる必要はない。In the case of straight stitching, even if the sewing direction of the cloth changes, there is no need to rotate the frame 1 in that direction.
千鳥縫いの場合は、シリンダ３３により小軸３０を可動
駒２９とともに図で上方に動かして所定の位置に固定し
、駆動歯車３４を回転させる。In the case of zigzag stitching, the small shaft 30 is moved upward in the figure together with the movable piece 29 by the cylinder 33 and fixed at a predetermined position, and the drive gear 34 is rotated.
駆動歯車３４の回転により、二つのクランク機構８．９
が作動し、針棒用クランク機構８は針棒５を上下させ、
また回動腕用クランク機構９は回動腕３を軸ピン４を支
点に左右に回動させる。Due to the rotation of the drive gear 34, two crank mechanisms 8.9
is activated, the needle bar crank mechanism 8 moves the needle bar 5 up and down,
Further, the rotating arm crank mechanism 9 causes the rotating arm 3 to rotate left and right about the shaft pin 4 as a fulcrum.
これにより千鳥縫いがなされるが、この場合においては
支持軸２を回動させて縫い方向にフレーム１を追従させ
る。As a result, a zigzag stitch is performed, and in this case, the support shaft 2 is rotated to cause the frame 1 to follow the sewing direction.
以上説明したように、この発明の旋回式ジグザクミシン
は、針棒５を中心とするフレーム１の一側に針棒用クラ
ンク機構８を、また他側に回動腕用クランク機構９をそ
れぞれ設備する構造であるため、全体の重心を支持軸２
の旋回中心に一致させることが容易であり、したがって
重心の片寄りに起因する各種の支障をなくしてミシンを
円滑に作動させることができる。As explained above, the rotating zigzag sewing machine of the present invention is equipped with a needle bar crank mechanism 8 on one side of the frame 1 centering on the needle bar 5, and a rotating arm crank mechanism 9 on the other side. Because of the structure, the overall center of gravity is centered on the support shaft 2.
It is easy to align the center of gravity with the center of rotation of the sewing machine, and therefore the sewing machine can operate smoothly without any problems caused by the center of gravity being shifted to one side.
また、針棒５の左右に二つのクランク機構８，９を設け
る関係上、必然的に、針棒５を囲むようにして、クラン
ク機構８９とそれらを動かす回転軸１１等の伝動機構が
広い面に分散して設けられるため、設計及びメンテナン
スが容易になるほか、クランク機構８，９や上記伝動機
構Ｏ作動に起因する旋回トルクの発生や微振動の共鳴等
を防止できる長所がある。Furthermore, since two crank mechanisms 8 and 9 are provided on the left and right sides of the needle bar 5, the crank mechanism 89 and the transmission mechanisms such as the rotating shaft 11 that move them are naturally distributed over a wide area surrounding the needle bar 5. This arrangement facilitates design and maintenance, and has the advantage of preventing the generation of turning torque and the resonance of minute vibrations caused by the operation of the crank mechanisms 8, 9 and the transmission mechanism O.
図面はこの発明の一実施例を示すもので、第１図はこの
発明に係る旋回式ジグザグミシンの断面図、第２図はフ
レームに対する中間軸の取付は状態を示す平面図、第３
図は第１図の（１−１）線に沿う断面図である。
１・・・・・・フレーム、２・・・・・・支持軸、３・
・・・・・回動腕、４・・・・・・軸ピン、５・・・・
・・針棒、８・・・・・・針棒用クランク機構、９・・
・・・・回動腕用クランク機構。The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view of a rotating zigzag sewing machine according to the invention, FIG. 2 is a plan view showing how the intermediate shaft is attached to the frame, and FIG.
The figure is a sectional view taken along line (1-1) in FIG. 1...Frame, 2...Support shaft, 3.
... Rotating arm, 4 ... Axis pin, 5 ...
...Needle bar, 8...Crank mechanism for needle bar, 9...
...Crank mechanism for rotating arm.
Claims (1)
レームと、このフレームの上記支持軸の中心線近傍に軸
ピンにより垂直な面内で回動自在に取り付けられた回動
腕と、この回動腕に回動腕の軸方向に移動自在に取り付
けられ前記支持軸の中心線を含む垂直な面内で回動自在
に構成された針棒と、前記フレームの上記針棒を中心と
する一側に設備され針棒を回動腕に対して上下させる針
棒用クランク機構と、前記フレームの前記針棒を中心と
する他側に設備され前記回動腕を軸ピンを支点に針棒と
ともに左右に回動させる回動腕用クランク機構とを具備
したことを特徴とする旋回式ジグザグミシン。1 A frame rotatably supported in a horizontal plane by a support shaft, a rotating arm attached to the frame near the center line of the support shaft by a shaft pin so as to be rotatable in a vertical plane, and a needle bar attached to a rotating arm so as to be movable in the axial direction of the rotating arm and configured to be rotatable in a vertical plane including the center line of the support shaft; and a needle bar of the frame centered on the needle bar. A needle bar crank mechanism is installed on one side and moves the needle bar up and down with respect to the rotating arm, and a needle bar is installed on the other side of the frame with the needle bar as the center, and the needle bar is installed on the other side of the frame and uses the rotating arm as a fulcrum. A rotating zigzag sewing machine characterized in that it is equipped with a crank mechanism for a rotating arm that rotates from side to side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54095494A JPS5841878B2 (en) | 1979-07-26 | 1979-07-26 | Rotating zigzag sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54095494A JPS5841878B2 (en) | 1979-07-26 | 1979-07-26 | Rotating zigzag sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5618894A JPS5618894A (en) | 1981-02-23 |
| JPS5841878B2 true JPS5841878B2 (en) | 1983-09-14 |
Family
ID=14139144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54095494A Expired JPS5841878B2 (en) | 1979-07-26 | 1979-07-26 | Rotating zigzag sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5841878B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH039482U (en) * | 1989-06-17 | 1991-01-29 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS545334A (en) * | 1977-06-15 | 1979-01-16 | Hitachi Ltd | Magnetic bubble memory device |
-
1979
- 1979-07-26 JP JP54095494A patent/JPS5841878B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS545334A (en) * | 1977-06-15 | 1979-01-16 | Hitachi Ltd | Magnetic bubble memory device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH039482U (en) * | 1989-06-17 | 1991-01-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5618894A (en) | 1981-02-23 |
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