JPS6114360Y2 - - Google Patents
Info
- Publication number
- JPS6114360Y2 JPS6114360Y2 JP11453881U JP11453881U JPS6114360Y2 JP S6114360 Y2 JPS6114360 Y2 JP S6114360Y2 JP 11453881 U JP11453881 U JP 11453881U JP 11453881 U JP11453881 U JP 11453881U JP S6114360 Y2 JPS6114360 Y2 JP S6114360Y2
- Authority
- JP
- Japan
- Prior art keywords
- cam
- arm
- adjusting
- swinging
- moving
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 43
- 238000009958 sewing Methods 0.000 claims description 36
- 230000000903 blocking effect Effects 0.000 claims description 8
- 239000004744 fabric Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【考案の詳細な説明】
この考案はボタン穴かがり縫ミシンに関するも
のである。[Detailed description of the invention] This invention relates to a buttonhole sewing machine.
従来、ボタン穴かがり縫いは、第1図に示すよ
うに、まず第1平行部イを縫つたのち次に第1閂
止ロを経て第2平行部ハを縫いその後再び第2閂
止ニを縫つて終了する。 Conventionally, buttonhole stitching involves first sewing the first parallel section A, then sewing the second parallel section C through the first bartack Lo, and then sewing the second bartack N again, as shown in Figure 1. Sew and finish.
このように、ボタン穴かがり縫いは閂止で一サ
イクルを終了していたので、糸がほつれやすくな
るという欠点があつた。 In this way, one cycle of buttonhole stitching ended with a bartack, which had the disadvantage that the threads were more likely to fray.
即ち、振巾を小さくして縫つた場合は一縫目の
長さが短いので指先等に縫目が引つかかり難く糸
がほつれにくいが、閂止は平行部に比較して針の
振り巾を大きくして縫つているため一縫目の長さ
が長くなり、従つて指先に引つかかり易くどうし
ても糸がほつれるという欠点がある。 In other words, when sewing with a small swing width, the length of each stitch is short, so the stitches are less likely to get caught on fingertips, etc., and the thread is less likely to fray. Since the stitches are sewn with larger threads, the length of each stitch is longer, which has the disadvantage that the threads tend to get caught on fingertips and inevitably become unraveled.
この発明は、このような欠点を解消する針棒振
巾変換装置を提供するにある。 The object of the present invention is to provide a needle bar amplitude conversion device that eliminates such drawbacks.
以下、この考案の実施例を図面により説明す
る。1はアーム2に回動可能に支持した針棒揺動
台で、この針棒揺動台1の下端に揺動腕3の一端
を連結し、その揺動腕3の他端をアーム2に回動
可能に支持した揺動軸4の一端に固定する。 Examples of this invention will be described below with reference to the drawings. Reference numeral 1 designates a needle bar rocking base rotatably supported on an arm 2. One end of a rocking arm 3 is connected to the lower end of this needle bar rocking base 1, and the other end of the rocking arm 3 is connected to the arm 2. It is fixed to one end of a swing shaft 4 that is rotatably supported.
揺動軸4の他端には一端を二又部を有するロツ
ド5の上端に段ねじにより回動可能に連結した揺
動杆6を固定し、ロツド5の二又部はミシンの作
動に連動して回転する偏心カム7を遊嵌する。ま
たこの二又部は振り巾を変えるための変換リンク
8の中央部で軸により回動可能に連結した揺動リ
ンクの一端を軸により回動可能に連結する。 A swinging rod 6 is fixed to the other end of the swinging shaft 4, one end of which is rotatably connected to the upper end of a rod 5 having a forked portion by a stepped screw, and the forked portion of the rod 5 is linked to the operation of the sewing machine. The rotating eccentric cam 7 is fitted loosely. Further, this forked portion rotatably connects one end of a swinging link rotatably connected by a shaft at the center of the conversion link 8 for changing the swing width.
変換リンク8の下部はミシンベツドに回動可能
に支持した基線変換軸10の一端部に固定した基
線変換腕11に軸により回動可能に連結し、上部
はミシンベツドに固定した軸受12に回動可能に
支持した振り巾調節のための調節腕13に一端を
回動可能に連結し、且つ一側面に目盛14を設け
た振り巾調節のための調節体15の他端に回動可
能に連結する。 The lower part of the conversion link 8 is rotatably connected by a shaft to a base line conversion arm 11 fixed to one end of a base line conversion shaft 10 rotatably supported on the sewing machine bed, and the upper part is rotatable on a bearing 12 fixed to the sewing machine bed. One end is rotatably connected to an adjusting arm 13 for adjusting the swinging width supported by the swinging width, and the other end is rotatably connected to the adjusting body 15 for adjusting the swinging width provided with a scale 14 on one side. .
上記軸受12には調節腕13の下半部二又部の
間に挿入した上方に延びる腕と横方向に延びる腕
をもつ振り巾変換のための変換体16を回動可能
に支持し、調節腕13の下面に一端を固定し変換
体16を調節腕13の方へ弾発するようばねSを
設ける。そして変換体16の上方に延びる腕の上
端には上記調節体15の目盛14に対向するボタ
ン孔かがり縫目の閂止部用の移動指針17を設
け、横方向に延びる腕の先端にはミシンの作業に
連動して回転するカム板18に設けた移動カム1
9の通路に対向する従動部としてのローラ20を
回動可能に支持する。 The bearing 12 rotatably supports a converting body 16 for swing width conversion, which has an upwardly extending arm and a laterally extending arm inserted between the forked portions of the lower half of the adjusting arm 13. A spring S is provided with one end fixed to the lower surface of the arm 13 so as to spring the converting body 16 toward the adjusting arm 13. At the upper end of the arm extending upwardly of the converting body 16, there is provided a moving pointer 17 for the bartacking part of the buttonhole stitch, which faces the scale 14 of the adjusting body 15, and at the tip of the arm extending laterally, a sewing machine is provided. A movable cam 1 provided on a cam plate 18 that rotates in conjunction with the work of
A roller 20 as a driven portion facing the passage 9 is rotatably supported.
上記調節腕13の中央部につまみを有するねじ
からなる第2調節体21を、その先端面が調節腕
13に設けたねじ穴を通つて上記変換体16の上
方に延びる腕の調節腕13に対向する面の上部に
はつまみを有するねじから成る第1調節体22
を、その先端面が調節腕13に設けたねじ穴及び
側面カバー23に設けた長穴を通つてアーム内に
凸出するよう設ける。 A second adjusting body 21 made of a screw having a knob at the center of the adjusting arm 13 is attached to the adjusting arm 13 of the arm whose distal end surface extends above the converting body 16 through a screw hole provided in the adjusting arm 13. The first adjusting body 22 consists of a screw having a knob on the upper part of the opposing surface.
is provided so that its tip surface protrudes into the arm through a screw hole provided in the adjustment arm 13 and an elongated hole provided in the side cover 23.
側面カバー23には、先端が上記目盛14に対
向するボタン孔かがり縫目の左右両側平行部の指
針を設けた指示体27を固定する。 An indicator 27 is fixed to the side cover 23, the tip of which is provided with a pointer on both left and right parallel parts of the buttonhole stitch, the tip of which faces the scale 14.
尚、上記変換リンク8の上部とアームとの間
に、変換リンク8が基線変換腕11との連結点を
中心にロツド5の方に弾性力を受けるようにばね
25を設け、また変換リンク8の下部とアームと
の間に変換リンク8が上方への弾性力を受けるよ
うにばね26を設ける。 A spring 25 is provided between the upper part of the conversion link 8 and the arm so that the conversion link 8 receives an elastic force toward the rod 5 around the connection point with the base line conversion arm 11, and the conversion link 8 A spring 26 is provided between the lower part of the converter link 8 and the arm so that the conversion link 8 receives an upward elastic force.
また上記基線変換軸10の他端部には基線調節
腕28を固定し、この基線調節腕28にはつまみ
を有するねじ29をその先端面が基線調節腕28
に設けたねじ穴を通つてミシンベツドに固定した
メタル30に上・下動可能に遊嵌した押し棒31
上端のねじ受け32に対向するように設け、押し
棒31の上部にはこの押し棒31を横方向に貫通
し、その突出部がメタル上部に設けた溝33に嵌
合するピン34を設け、下部には上記カム板18
に設けた高低面を有する基線変換カム35のカム
面に接触するローラー36を回動可能に設ける。
また第3図においてミシンベツドには基線調節腕
28の右先端部下面に対向する基線調節ネジ37
を設ける。 Further, a base line adjustment arm 28 is fixed to the other end of the base line conversion shaft 10, and a screw 29 having a knob is attached to the base line adjustment arm 28 so that the tip end thereof is connected to the base line adjustment arm 28.
A push rod 31 is loosely fitted into a metal 30 fixed to the sewing machine bed through a screw hole provided in the sewing machine so as to be movable up and down.
A pin 34 is provided at the top of the push rod 31 so as to face the screw receiver 32 at the upper end, and the pin 34 passes through the push rod 31 laterally and has a protrusion that fits into a groove 33 provided in the upper part of the metal. At the bottom is the cam plate 18 mentioned above.
A roller 36 is rotatably provided in contact with the cam surface of the base line conversion cam 35, which has a height surface provided on the base line conversion cam 35.
In addition, in FIG. 3, the sewing machine bed has a base line adjustment screw 37 facing the lower surface of the right tip of the base line adjustment arm 28.
will be established.
38は機枠内に設けた固定軸38bに回動可能
に支持したL字状の止縫腕で、常には機枠と止縫
腕38との間に設けたバネS1によつて反時計方向
に引張されると共に機枠に固定したストツパー
STによつてその回動位置が規制されている。そ
してこの状態で止縫腕38は前記第1調節体22
の先端と接触し、変換体13を介して針の振り巾
が縫目平行部の振り巾となる位置に調節体15を
保持している。 38 is an L-shaped locking arm rotatably supported on a fixed shaft 38b provided in the machine frame, and is normally rotated counterclockwise by a spring S1 provided between the machine frame and the locking arm 38. A stopper that is pulled in the direction and fixed to the machine frame.
Its rotational position is regulated by ST. In this state, the sewing arm 38 is attached to the first adjuster 22.
The adjusting body 15 is held in a position where the swinging width of the needle becomes the swinging width of the parallel stitch portion via the converting body 13.
この止縫腕38の水平部38A端には作動腕3
9の基端が固定してあり、作動腕39の先端には
ミシンの作動に連動して回転するカム板18上に
その位置を調節可能に設けた止縫カム40の通路
に対向するローラ41を回動可能に支持する。 At the end of the horizontal part 38A of this locking arm 38, there is an operating arm 3.
The proximal end of the actuating arm 39 has a fixed base end, and a roller 41 facing the path of a locking cam 40 whose position is adjustable on a cam plate 18 that rotates in conjunction with the operation of the sewing machine is provided at the distal end of the operating arm 39. is rotatably supported.
尚、止縫カム40と前記移動カム19の通路と
は異なる。 Note that the paths of the locking cam 40 and the moving cam 19 are different.
そして前記縫腕38と作動腕39とで交換体1
6を針棒揺動機構の針振り巾が縫目平行部におけ
る振り巾よりも小さい巾になるように移動する移
動手段Aを構成する。 Then, the sewing arm 38 and the operating arm 39 form the exchanger 1.
6 constitutes a moving means A that moves the needle bar swinging mechanism so that the needle swinging width becomes smaller than the swinging width in the parallel stitch portion.
42は前記止縫カム40とカム板18を挾んだ
対向位置に設けた遮断カムで、(第3図参照)止
縫カム40とはカム板18に設けた長孔18A内
を嵌通するボルト43,44で連結され、止縫カ
ム40を移動すると遮断カム42を同じく移動す
る。そして、この遮断カム42は図示しないが駆
動源と針棒揺動機構を連結又は遮断するクラツチ
機構と連動しており、クラツチ機構の従動子が遮
断カム42の低カム面42aに乗り上げたときは
針棒揺動機構を低速駆動し、さらに高カム面42
bに乗り上げたとき針棒揺動機構を停止するよう
になつている。 Reference numeral 42 denotes a blocking cam provided oppositely between the locking cam 40 and the cam plate 18 (see FIG. 3), and the locking cam 40 is fitted into the elongated hole 18A provided in the cam plate 18. They are connected by bolts 43 and 44, and when the locking cam 40 is moved, the blocking cam 42 is also moved. The cutoff cam 42 is interlocked with a clutch mechanism (not shown) that connects or cuts off the drive source and the needle bar swing mechanism, and when the follower of the clutch mechanism rides on the low cam surface 42a of the cutoff cam 42, The needle bar swing mechanism is driven at low speed, and the high cam surface 42
The needle bar swinging mechanism is stopped when the needle bar runs over the needle bar b.
次に作用を説明する。 Next, the action will be explained.
ミシンの作動に連動する偏心カム7の回転によ
りロツド5を揺動し、これによつて得られる上下
運動を揺動軸4に固定した揺動杆6に伝えて揺動
軸4を回動し、さらにこの揺動軸4の回動により
揺動軸4に固定した揺動腕3を介して針棒揺動台
1を左右に揺動し、針棒を揺動する。 The rod 5 is oscillated by the rotation of the eccentric cam 7 that is linked to the operation of the sewing machine, and the vertical movement obtained by this is transmitted to the oscillating rod 6 fixed to the oscillating shaft 4 to rotate the oscillating shaft 4. Further, by the rotation of the swing shaft 4, the needle bar swing table 1 is swinged from side to side via the swing arm 3 fixed to the swing shaft 4, thereby swinging the needle bar.
変換リンク8に設けたばね25の作用は、調節
体15を介して調節腕13をアーム側面方向に引
つぱり、調節腕13の上部に設けた第1調節体2
2の先端面をアーム側面カバー23内に設けたL
字状の止縫腕38に押圧するものである。この時
止縫腕38はばね39の引つ張り力により回動し
ない。 The action of the spring 25 provided on the conversion link 8 is to pull the adjustment arm 13 in the side direction of the arm via the adjustment body 15, and the first adjustment body 2 provided on the upper part of the adjustment arm 13
L with the tip end surface of 2 provided inside the arm side cover 23
It is pressed against the letter-shaped locking arm 38. At this time, the locking arm 38 does not rotate due to the tensile force of the spring 39.
そして、第1調節体22のつまみを右へ回動す
れば、止縫腕38は回動さないため、調節腕13
はばね25の作用に抗してアーム側面の反対方向
に回動し、調節体15は第4,5図において、ア
ーム側面カバー23に固定した指示体27の指針
に対して右へ移動し、これにより調節体1の側面
に設けた目盛14が右へ移動する。そして調節体
15の右への移動によつて変換リンク8は基線変
換腕11との連結点Aを中心に時計方向に回動す
る。また第1調節体22のつまみを左へ回動すれ
ば調節腕15は左へ移動する。そして調節体15
の左への移動によつて変換リンク8は基線変換腕
11との連結点Aを中心に反時計方向に回動す
る。そこで、第4図において偏心カム7の回転に
よつてロツド5は左右に揺動し、これによりロツ
ド5と変換リンク8に設けた揺動リンク9が変換
リンク8との連結点Bを支点として揺動してロツ
ド5の左右の揺動に上・下運動を与え、そして揺
動杆6は揺動杆6と揺動軸4の連結点を中心に上
下に揺動する。 If the knob of the first adjusting body 22 is rotated to the right, the locking arm 38 does not rotate, so the adjusting arm 13
The adjusting body 15 rotates in the opposite direction of the arm side surface against the action of the spring 25, and the adjusting body 15 moves to the right with respect to the pointer of the indicator 27 fixed to the arm side cover 23 in FIGS. As a result, the scale 14 provided on the side surface of the adjustment body 1 moves to the right. Then, as the adjustment body 15 moves to the right, the conversion link 8 rotates clockwise about the connection point A with the base line conversion arm 11. Further, when the knob of the first adjusting body 22 is turned to the left, the adjusting arm 15 moves to the left. and regulator 15
As the conversion link 8 moves to the left, the conversion link 8 rotates counterclockwise around the connection point A with the base line conversion arm 11. Therefore, in FIG. 4, the rod 5 swings left and right due to the rotation of the eccentric cam 7, and as a result, the swing link 9 provided on the rod 5 and the conversion link 8 uses the connection point B with the conversion link 8 as a fulcrum. The rod 5 swings horizontally to give vertical and vertical movements, and the swinging rod 6 swings up and down about the connection point between the swinging rod 6 and the swinging shaft 4.
これによつて揺動杆6の揺動角と等しい揺動角
を針棒揺動台1に与える。 As a result, a swinging angle equal to the swinging angle of the swinging rod 6 is given to the needle bar swinging table 1.
ところで、上記方法で調節体15を第6図から
第7図のように右へ移動すれば、変換リンク8は
連結点Aを支点に時計方向に回動し、これと共に
上記揺動リンク9と変換リンク8の連結点Bも時
計方向に移動する。このため揺動リンク9の揺動
支点が下がりロツド5が左終点位置へ揺動した時
ロツド5と揺動リンク9の連結点Cの上向終点位
置が第6図における位置よりも高くなり、揺動杆
6の揺動角が大きくなる。 By the way, if the adjustment body 15 is moved to the right from FIG. 6 to FIG. Connection point B of conversion link 8 also moves clockwise. Therefore, when the swinging fulcrum of the swinging link 9 lowers and the rod 5 swings to the left end position, the upward end position of the connecting point C between the rod 5 and the swinging link 9 becomes higher than the position in FIG. The swing angle of the swing rod 6 becomes larger.
こうして第一調節体22の左右への回動により
調節体15を左右に移動、つまり揺動リンク9の
揺動リンク9の揺動支点を移動して針棒揺動台1
の振り巾を調節する。また、第4図において変換
体16は調節腕13下面に固定したばねSの作用
により軸受12との連結点を中心に時計方向に回
動する力を受けるが、調節腕13の中央部に設け
た第2調節体21を右へ回動するとばねSの作用
に抗して反時計方向に回動し、変換体16の横方
向に延びる腕は下方へ移動する。また、第2調節
体21は左へ回動するとばねSの作用により変換
体16は時計方向に回動し、横方向に延びる腕は
上方へ移動する。 In this way, by rotating the first adjusting body 22 left and right, the adjusting body 15 is moved left and right, that is, the swinging fulcrum of the swinging link 9 is moved, and the needle bar swinging table 1 is moved.
Adjust the swing width. In addition, in FIG. 4, the converter 16 receives a force to rotate clockwise around the connection point with the bearing 12 due to the action of a spring S fixed to the lower surface of the adjusting arm 13. When the second adjusting body 21 is rotated to the right, it is rotated counterclockwise against the action of the spring S, and the arm extending in the lateral direction of the converting body 16 moves downward. Further, when the second adjustment body 21 is rotated to the left, the converting body 16 is rotated clockwise by the action of the spring S, and the arm extending in the lateral direction is moved upward.
この変換体16の回動によつて変換体16の横
方向に延びる腕は上・下に移動して、横方向に延
びる腕の先端に回動可能に支持したローラ20が
カム板18に設けた移動カム19によつて上方へ
持ち上げられる量が変化し、上方に延びる腕の上
端に設けた移動指針17は調節体15に設けた目
盛に対向して左右に移動する。この時の最大振り
巾の目盛14は「4」を指示している。(第7図
参照)
このカム板18の移動カム19はボタン穴の閂
止部を縫う時にローラ20を持ち上げるように配
置されていて、この移動カム16によつて持ち上
げられたローラ20を支持する変換体16は軸受
12との連結点を中心に時計方向へ回動し、上方
に延びる腕の上部はそれと対向接触する第2調節
体21の先端面をアーム側面の反対方向に押しつ
け、これによつて調節腕13もアーム側面の反対
方向に回動し、第2,6,7図において調節体1
5は右へ移動し、変換リンク8の回動により揺動
リンク9はその揺動支点である変換リンク8の連
結点Bの移動によつてその揺動上方終点位置が上
昇して針棒揺動台1の振り巾が大きくなる。 As the converter 16 rotates, the laterally extending arm of the converter 16 moves up and down, and a rotatably supported roller 20 is provided on the cam plate 18 at the tip of the laterally extending arm. The amount lifted upward by the moving cam 19 changes, and the moving pointer 17 provided at the upper end of the arm extending upward moves left and right in opposition to the scale provided on the adjusting body 15. At this time, the maximum swing width scale 14 indicates "4". (See FIG. 7) The movable cam 19 of this cam plate 18 is arranged to lift up the roller 20 when sewing the bartacking part of a buttonhole, and supports the roller 20 lifted by the movable cam 16. The converting body 16 rotates clockwise around the connection point with the bearing 12, and the upper part of the arm extending upward presses the end surface of the second adjusting body 21, which is in opposing contact with the converting body 16, in the opposite direction of the side surface of the arm. Therefore, the adjusting arm 13 also rotates in the opposite direction of the side of the arm, and as shown in FIGS.
5 moves to the right, and due to the rotation of the conversion link 8, the swing link 9 moves its swing fulcrum, the connection point B of the conversion link 8, and the upper end point of its swing rises, causing the needle bar to swing. The swing width of the moving table 1 becomes larger.
そしてローラが移動カム19の上面を乗り越え
ればばね25の作用により元の位置に戻り、変換
リンク8及び連結点Bも元の位置に戻つて針棒揺
動台1の振り巾は小さくなり平行部の振り巾とな
る。 When the roller passes over the upper surface of the moving cam 19, it returns to its original position due to the action of the spring 25, and the conversion link 8 and connection point B also return to their original positions, and the swing width of the needle bar swing table 1 becomes smaller. It becomes a swing.
尚、この時の最大振り巾の目盛14は第4図の
如く「2」を示す。 Incidentally, the maximum swing width scale 14 at this time indicates "2" as shown in FIG.
このようにして、第1平行部(第1図イ)、第
1閂止部、第2平行部(第1照ハ)、を縫成し、
更にローラが第2閂止部(第1図ニ)用の移動カ
ム19の上面を乗り越えて第2閂止部を縫い終わ
ると、遮断カム42の低カム面42aが停止機構
の従動子(図示せず)と接触してこれを移動さ
せ、ミシンを低速駆動させる。 In this way, the first parallel part (FIG. 1 A), the first bartacking part, and the second parallel part (first bolt C) are sewn,
Furthermore, when the roller passes over the upper surface of the movable cam 19 for the second bar-tacking section (D in FIG. (not shown) to move it and drive the sewing machine at low speed.
これと同時に作動腕39の先端に回動可能に支
持しれローラ41がカム板18に設けた止縫カム
40によつて上方へ持ち上げられる。このため、
作動腕39に固定している止縫腕38が固定軸3
8bを中心としてばねS1に抗して時計方向に回転
する。 At the same time, a roller 41 rotatably supported at the tip of the operating arm 39 is lifted upward by a locking cam 40 provided on the cam plate 18. For this reason,
The locking arm 38 fixed to the operating arm 39 is connected to the fixed shaft 3
It rotates clockwise about 8b against the spring S1 .
すると調節体15の先端が止縫腕38に追従し
て移動するため、調節腕13は軸受12を中心と
して反時計方向に回動し、これによつて調節体1
5は平行部の振り巾位置を通り越して左方に移動
し、変換リンク8の回動により揺動リンク8の連
結点Bの移動によつてその揺動上方終点位置が平
行部の場合に比較して下降し針棒揺動台1の振り
巾が平行部の振り巾にくらべて小さくなり、止め
縫いが行なわれる。 Then, the tip of the adjustment body 15 moves following the locking arm 38, so the adjustment arm 13 rotates counterclockwise around the bearing 12, and as a result, the adjustment body 1
5 moves to the left past the swing width position of the parallel part, and due to the rotation of the conversion link 8, the connection point B of the swing link 8 moves, and the upper end point of the swing is in the parallel part. Then, the swinging width of the needle bar oscillating table 1 becomes smaller than that of the parallel section, and tacking is performed.
この時の最大振り巾の目盛14は図示しないが
「1」を示す。 Although not shown, the maximum swing width scale 14 at this time indicates "1".
そして、停止機構の従動子(図示せず)が遮断
カム41の高カム面42bと接触するとミシンの
駆動源が停止し、ボタン穴かがり縫いの1サイク
ルが終了する。尚、次にミシンを始動する状態で
は、ローラ41は止縫カム40のカム面上にある
ので第1平行部を縫う前に止縫いが若干入ること
になる。 Then, when the follower (not shown) of the stop mechanism comes into contact with the high cam surface 42b of the cutoff cam 41, the drive source of the sewing machine stops, and one buttonhole sewing cycle is completed. In addition, when the sewing machine is next started, the roller 41 is on the cam surface of the locking cam 40, so a locking stitch will be slightly inserted before the first parallel portion is sewn.
以上は普通の布を縫う場合について述べたが、
ジヤージ等の伸縮性の高い布の場合には第2図に
示したように第1平行部イ′の縫い開始点Aが第
2閂止ニ′よりはみだしてしまうわけであるが、
これを防ぐためには遮断カム42の取付位置を前
記はみだし分だけづらせば縫い開始点Aも同量分
づれることになり、縫い開始点Aは第2閂止ニ′
によつてかくされることになる。 The above is about sewing ordinary cloth, but
In the case of highly elastic fabrics such as jersey, the sewing start point A of the first parallel portion A' protrudes beyond the second bar tack N' as shown in Figure 2.
In order to prevent this, if the mounting position of the cutoff cam 42 is shifted by the above-mentioned amount of protrusion, the sewing start point A will also be shifted by the same amount, and the sewing start point A will be shifted by the second bar tack.
It will be hidden by.
そして遮断カム42と止め縫いカム40は共に
同量分移動するので止縫の効く位置は常にミシン
の最終停止位置となる。 Since both the cutoff cam 42 and the tacking cam 40 move by the same amount, the position where the tacking is effective is always the final stop position of the sewing machine.
尚、第5図に示す如くミシンベツドに固定した
メタル30に遊嵌した押し棒31は、その下部に
設けたローラ36が、基線変換カム35が回転す
ることにより、その接触面の高低に対応して上・
下動し、一方変換リンク8の下部に設けたばね2
6の作用により変換リンク8は常に上方への力を
受け、この変換リンク8は連結した基線変換腕1
1は基線変換軸10との連結点を中心にベツド面
に対して反対方向の回動力を受けてその先端に固
定した基線調節腕28は基線変換軸10との連結
点を中心にベツド面の方向へ回動を受ける。 As shown in FIG. 5, the push rod 31, which is loosely fitted into the metal 30 fixed to the sewing machine bed, has a roller 36 provided at its bottom that corresponds to the height of its contact surface by the rotation of the base line conversion cam 35. Above and above
The spring 2 provided at the bottom of the conversion link 8 moves downward.
6, the conversion link 8 always receives an upward force, and this conversion link 8 is connected to the base line conversion arm 1.
1 receives a rotational force in the opposite direction to the bed surface around the connection point with the base line conversion shaft 10, and the base line adjustment arm 28 fixed at its tip rotates the bed surface around the connection point with the base line conversion shaft 10. receive rotation in the direction.
基線調節腕28は、その中央部に設けたねじ2
9の下面と接触する押し棒31の上・下動によつ
てねじ29を介してベツド面に対して上・下動す
る。基線変換カム35のカム面の変化により押し
棒31が上方へ押し上げらるとばね26の作用に
抗して基線調節腕28はベツド面の反対方向に回
動し、基線変換軸10の左への回動により基線変
換腕11はベツド面の方向に回動し、これによつ
て変換リンク8は下方へ移動し、揺動リンク9を
介してロツド5も下方へ移動する。そしてこのロ
ツド5の下方の移動に伴つて針棒揺動台1も移動
する。反対に押し棒31が下がるとばね26の作
用によつて基線調節腕28、基線変換軸10及び
基線変換腕11は元の状態に戻り針棒揺動台1も
元の状態に戻る。 The base line adjustment arm 28 has a screw 2 provided at its center.
The push rod 31 is moved up and down relative to the bed surface via the screw 29 by the up and down movement of the push rod 31 that comes into contact with the lower surface of the bed. When the push rod 31 is pushed upward due to a change in the cam surface of the base line conversion cam 35, the base line adjustment arm 28 rotates in the opposite direction of the bed surface against the action of the spring 26, and moves to the left of the base line conversion shaft 10. As a result of the rotation, the base line conversion arm 11 rotates in the direction of the bed surface, thereby the conversion link 8 moves downward, and the rod 5 also moves downward via the swing link 9. As the rod 5 moves downward, the needle bar swing table 1 also moves. Conversely, when the push rod 31 is lowered, the base line adjustment arm 28, base line conversion shaft 10, and base line conversion arm 11 return to their original states due to the action of the spring 26, and the needle bar swing table 1 also returns to its original state.
このように、基線を変換することによつて第1
平行部から第2平行部に縫い作用を変換し、前述
した閂止縫い及び止め縫いと共にボタン穴かがり
縫いを形成するものである。 In this way, by converting the baseline, the first
The sewing action is converted from the parallel portion to the second parallel portion, and buttonhole stitches are formed together with the above-mentioned bar tacking and tacking stitches.
以上述べたようにこの考案によれば、ボタン穴
かがりにおいて最終の閂止め部を縫つた後に、平
行部の針の振り巾よりも小さい振り巾で針を振ら
せ、これによつてボタン穴かがりを終了するよう
に構成したので、ボタン穴かがり縫いにおいて縫
い目がほつれることはなく商品価値が向上すると
いう効果を奏する。 As described above, according to this invention, after sewing the final bar-tacking part during buttonholing, the needle is swung with a width smaller than that of the needle in the parallel part, thereby sewing the buttonhole. Since the buttonhole stitching is configured to finish, the stitches do not come unraveled during buttonholing, and the product value is improved.
また、縫いはじめ位置を調節するための遮断カ
ムを移動しても、止め縫いカムは遮断カムに追従
して移動するので止め縫いの効く位置は常に最終
縫目部分となり、この種操作が簡単になるという
効果を奏する。 In addition, even if you move the blocking cam to adjust the sewing start position, the tacking cam will follow the blocking cam, so the tacking will always be effective at the last stitch, making this type of operation easier. It has the effect of becoming.
第1図は、ボタン穴かがり縫目の平面図、第2
図はこの考案の一実施例を示す斜視図、第3図は
遮断カムと止縫カムの取付部分の部分拡大断面
図、第4図は針棒の振巾調節部の部分断面図、第
5図は基線変換部の部分断面図、第6図、第7図
は針棒揺動機構の説明線図、第8図はジヤージ等
の伸縮性の高い布を縫つた場合のボタン穴かがり
縫目の平面図である。
5……ロツド、13……調節腕、15……調節
体、16……変換体、19……移動カム、21…
…第2調節体、22……第1調節体、39,38
b……移動手段、40……止縫カム、42……遮
断カム。
Figure 1 is a plan view of the buttonhole stitch, Figure 2
The figure is a perspective view showing one embodiment of this invention, FIG. 3 is a partially enlarged cross-sectional view of the mounting portion of the blocking cam and the locking cam, FIG. The figure is a partial sectional view of the base line conversion section, Figures 6 and 7 are explanatory diagrams of the needle bar swing mechanism, and Figure 8 is a buttonhole stitch when sewing highly elastic fabric such as jersey. FIG. 5... Rod, 13... Adjustment arm, 15... Adjustment body, 16... Conversion body, 19... Moving cam, 21...
...Second regulating body, 22...First regulating body, 39, 38
b...Moving means, 40...Securing cam, 42...Blocking cam.
Claims (1)
るロツドと ミシンベツドに揺動可能に支持した調節腕と、 ロツド及び調節腕を連結したアームに固定した
縫目平行部用の指示体の指針に対向する目盛をも
つ調節体と ミシンの作動に連動して回転可能に機枠に支持
したカム板と、 縫目閂止部の巾に関連するカム面をもち前記カ
ム板上に支持した移動カムと、 ミシンベツドに中間部を揺動可能に支持し下端
に移動カムのカム面に対向する従動部及び上端に
調節体の目盛に対向する縫目閂止部用の移動紙針
とをもつL字状の変換体と、 調節体を移動する第1調節体と、 目盛の指示体の指針示箇所へ移動指針を移動す
るように変換体を移動するとともに移動カムのカ
ム面による変換体の揺動に関連して調節腕を揺動
するようにした第2調節体と、 移動カムに対する取付位置を可変可能にカム板
上に支持した遮断カムと 遮断カムのカム面との接触に関連して駆動源と
針棒揺動機構との連動を遮断し、非接触に関連し
て駆動源と針棒揺動機構とを連動するクラツチ機
構と、 縫目平行部の巾よりも小さい巾に関連するカム
面を有し、かつ遮断カムと連動してカム面の取付
位置を可変可能にカム板上に支持した止縫カム
と、 基端をミシン機枠に回動可能に先端を止縫カム
の移動経路上に配置した作動腕と、作動腕に一体
に連結すると共に前記第1調節体に接触した止縫
腕とで構成される移動手段とよりなる針棒振巾変
換装置。[Scope of Claim for Utility Model Registration] A rod connected to a needle bar swinging mechanism and swinging in conjunction with a drive source, an adjusting arm swingably supported on the sewing machine bed, and a rod and adjusting arm fixed to the connected arm. An adjusting body with a scale opposite to the indicator pointer for the parallel seam section, a cam plate rotatably supported on the machine frame in conjunction with the operation of the sewing machine, and a cam surface related to the width of the seam bar-tacking section. a movable cam supported on the cam plate; an intermediate portion swingably supported on the sewing machine bed; a driven portion facing the cam surface of the movable cam at the lower end; and a stitch bartack at the upper end facing the scale of the adjuster. an L-shaped converting body having a moving paper needle for the part; a first adjusting body for moving the adjusting body; a second adjusting body whose adjusting arm swings in relation to the swinging of the converting body by the cam surface of the moving cam; a blocking cam supported on a cam plate so that its mounting position with respect to the moving cam can be varied; and a blocking cam. a clutch mechanism that interrupts the interlock between the drive source and the needle bar swing mechanism in connection with contact with the cam surface of the cam surface, and interlocks the drive source and the needle bar swing mechanism in connection with non-contact; A locking cam has a cam surface related to a width smaller than the width of the section, and is supported on a cam plate so that the mounting position of the cam surface can be changed in conjunction with the cutoff cam, and the base end is attached to the sewing machine frame. A needle comprising a moving means comprising an actuating arm whose tip is rotatably arranged on the moving path of the locking cam, and a locking arm integrally connected to the actuating arm and in contact with the first adjustment body. Rod width conversion device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11453881U JPS5820680U (en) | 1981-08-01 | 1981-08-01 | Needle bar width conversion device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11453881U JPS5820680U (en) | 1981-08-01 | 1981-08-01 | Needle bar width conversion device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5820680U JPS5820680U (en) | 1983-02-08 |
JPS6114360Y2 true JPS6114360Y2 (en) | 1986-05-06 |
Family
ID=29908814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11453881U Granted JPS5820680U (en) | 1981-08-01 | 1981-08-01 | Needle bar width conversion device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5820680U (en) |
-
1981
- 1981-08-01 JP JP11453881U patent/JPS5820680U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5820680U (en) | 1983-02-08 |
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