JPS6314776Y2 - - Google Patents
Info
- Publication number
- JPS6314776Y2 JPS6314776Y2 JP8218082U JP8218082U JPS6314776Y2 JP S6314776 Y2 JPS6314776 Y2 JP S6314776Y2 JP 8218082 U JP8218082 U JP 8218082U JP 8218082 U JP8218082 U JP 8218082U JP S6314776 Y2 JPS6314776 Y2 JP S6314776Y2
- Authority
- JP
- Japan
- Prior art keywords
- knee
- plate
- shaft
- raising
- raised plate
- 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
- 210000003127 knee Anatomy 0.000 claims description 34
- 238000009958 sewing Methods 0.000 claims description 20
- 239000004744 fabric Substances 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 10
- 230000033001 locomotion Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【考案の詳細な説明】
本考案は、縫終つた部分の糸のほつれを防止す
るすくい縫ミシンにおける止め縫装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixing stitch device for a blind stitch sewing machine that prevents threads from fraying at the finished sewing part.
すくい縫ミシンは環縫を行なつているため最終
の縫目がほつれると縫目全部にわたつて縫目が取
れてしまう欠点がある。しかし従来縫製終了後針
折れを防ぐため針を上死点に停止させて布地を前
方に引張つて糸を切断し、最終縫目の止め縫は糸
を切断したことで完了とし、特別に止め縫は行な
つていなかつた。しかし、この方法では布地を引
張る時縫目糸が引張られて美しい縫目が縮み、製
品価値を下げるとともに糸のほつれる原因ともな
つている。 Since the blind stitch sewing machine performs chain stitching, it has the disadvantage that if the final stitch frays, the entire stitch will come off. However, conventionally, in order to prevent the needle from breaking after sewing, the needle is stopped at the top dead center and the fabric is pulled forward to cut the thread, and the last stitch is completed when the thread is cut. was not carried out. However, with this method, when the fabric is stretched, the seam threads are pulled, causing the beautiful seams to shrink, lowering the product value and causing the threads to fray.
このため糸を切断した後、手作業によつて糸の
端部を縛つて結び目をつくつたり、或いは本出願
者が先に提案したように(実願55−186340)縫終
り時にペダル操作によつて針板に圧接している押
え金を針板から離し、布の送り量を減少させるこ
とによつて、縫目を細かく重ねて縫製するなどし
てほつれを防止しているが、前者は手作業のため
作業能率が悪く、後者はほつれを完全に防止出来
ない不都合があつた。 For this reason, after cutting the thread, it is necessary to manually tie the end of the thread and tie a knot, or, as previously proposed by the applicant (Utility Application No. 55-186340), by operating the pedal at the end of sewing. Therefore, the presser foot that is in pressure contact with the throat plate is moved away from the throat plate, the amount of cloth fed is reduced, and the stitches are sewn in close overlaps to prevent fraying. The latter had the disadvantage that it was not possible to completely prevent fraying, as it was done manually, resulting in poor work efficiency.
本考案は上記の事情に鑑み、ほつれの発生しな
い止め縫装置を提供することを目的とするもの
で、すくい縫の終りに押え金を針板から離して布
送り幅を減少して重ね縫を行う機構と、縫製中に
1針毎に布地を突上げてすくい縫をさせている突
上板の定角度振り運動の位置を変換させ針と突上
板の接触を断ち空環縫を行なわせる機構とを兼ね
具えたものである。 In view of the above-mentioned circumstances, the purpose of the present invention is to provide a tacking device that does not cause fraying, and which removes the presser foot from the throat plate at the end of blind stitching, reduces the cloth feed width, and performs overlap stitching. This mechanism changes the position of the fixed-angle swing motion of the raised plate that thrusts up the fabric for each stitch during sewing to create a blind stitch, thereby breaking the contact between the needle and the raised plate and performing empty chain stitching. It also has a mechanism.
以下本考案を図面を参照して説明する。 The present invention will be explained below with reference to the drawings.
第1図ないし第8図は本考案に係るすくい縫ミ
シンにおける止め縫装置の一実施例を示すもので
ある。第1図は、膝上げ機構の側部断面を示す図
で、図中符号1はブリー2の回転を伝達する上軸
である。上軸1には偏心カム3が取付けられてい
る。この偏心カム3には偏心カムエキセンスリー
ブ4を介して始動レバー5の上端が回動自在に取
付けられている。また上記始動レバー5の下端
は、前後方向に延在する揺動レバー6の後端部と
ピン7により回動自在に連結されている。上記ピ
ン7はねじ8によつて揺動レバー6に固定されて
いる。また上記揺動レバー6は、第2図に示すよ
うに中央に設けられた筒状部6aにおいて、アー
ム本体9に両端が支持された跳縫切換軸10に固
定されているすくい下げ偏心カム11に回動自在
に取付けられている。またすくい下げ偏心カムの
筒状部6aおよびスリーブ12の各端面には跳縫
切換軸10にねじ13,14によつて固着されて
いるカラー15,16が設けられ、軸10の延在
方向の移動が阻止されている。また上記揺動レバ
ー6の前端部は上方に屈折している。この屈折し
た先端には、ねじ棒17の一端がナツト18によ
つて固着されている。また上記ねじ棒17の他端
には、連動板19の両端部に取付けられたボール
20,21の一方20が芯ねじ22によつて回動
自在に取付けられ、他方のボール21には球受け
ロツト23が芯ねじ24により回動自在に取付け
られている。上記球受けロツト23には、締めね
じ25により突上伝動軸26の一端部が固着され
ている。また突上伝動軸26の他端には、突上板
27がナツト28で固着されている。 1 to 8 show an embodiment of a tacking device for a blind stitch sewing machine according to the present invention. FIG. 1 is a side cross-sectional view of the knee raising mechanism, and reference numeral 1 in the figure is an upper shaft that transmits the rotation of the brace 2. As shown in FIG. An eccentric cam 3 is attached to the upper shaft 1. The upper end of a starting lever 5 is rotatably attached to the eccentric cam 3 via an eccentric cam sleeve 4. The lower end of the starting lever 5 is rotatably connected to the rear end of a swing lever 6 extending in the front-rear direction by a pin 7. The pin 7 is fixed to the swing lever 6 by a screw 8. Further, as shown in FIG. 2, the swinging lever 6 has a scoop-down eccentric cam 11 fixed to a jump stitch switching shaft 10 whose both ends are supported by the arm body 9 in a cylindrical portion 6a provided at the center. It is rotatably mounted on the Further, collars 15 and 16 are provided on each end surface of the cylindrical portion 6a of the scooping eccentric cam and the sleeve 12, and are fixed to the jump stitch switching shaft 10 with screws 13 and 14. Movement is blocked. Further, the front end of the swing lever 6 is bent upward. One end of the threaded rod 17 is fixed to this bent tip with a nut 18. Further, one of balls 20 and 21 attached to both ends of the interlocking plate 19 is rotatably attached to the other end of the threaded rod 17 by a core screw 22, and the other ball 21 has a ball holder. A rod 23 is rotatably attached by a core screw 24. One end of a projecting transmission shaft 26 is fixed to the ball receiving rod 23 with a tightening screw 25. Further, a raised plate 27 is fixed to the other end of the raised transmission shaft 26 with a nut 28.
また、布地を着脱する際の膝上げ機構は、第2
図、第3図に示すように膝当て操作を行なうと膝
上げ軸29が回動されるようになつている。膝上
げ軸29は、、上記揺動レバー6とほぼ平行に前
後方向に延在しその前端部はアーム本体9に軸受
30を介して支承され、後端はアーム本体9に直
接支承されている。上記膝上げ軸29にはスリー
ブ31が装着されまた膝上げテコ32がボルト3
2aによつて固定され前方向(軸受30方向)の
移動が阻止され、またスリーブ31およびバネ掛
けカラー33により後方向の移動が阻止されてい
る。上記ばね掛けカラー33には、アーム本体9
にばね掛けピン34にひつ掛けられている引張り
コイルばね35が取付けられている。またばね掛
けカラー33はねじ36により膝上げ軸29に固
定されており膝当て操作を戻す場合、自動的に戻
るようになつている。 In addition, the knee-raising mechanism when putting on and taking off the fabric is the second
As shown in FIGS. 3 and 3, when the knee pad is operated, the knee raising shaft 29 is rotated. The knee raising shaft 29 extends in the front-rear direction substantially parallel to the swing lever 6, and its front end is supported by the arm body 9 via a bearing 30, and its rear end is directly supported by the arm body 9. . A sleeve 31 is attached to the knee raising shaft 29, and the knee raising lever 32 is connected to the bolt 3.
2a to prevent movement in the forward direction (towards the bearing 30), and movement in the rear direction is prevented by the sleeve 31 and spring collar 33. The arm body 9 is attached to the spring hanging collar 33.
A tension coil spring 35 is attached to the spring hook pin 34. Further, the spring-loaded collar 33 is fixed to the knee-raising shaft 29 by a screw 36, and is designed to automatically return when the knee pad operation is returned.
また膝上げテコ32の先端には、ボルト37に
よつて二股ブロツク38が取付けられている。こ
の二股ブロツク38にはねじ39,40によつて
固着され、上方に延びる押え下げ引き板41が取
付けられている。この押え下げ引き板41の上端
には第4図に示すようにボルト42により押え下
げロツト43の先端が回動自在に取付けられてい
る。また上記押え下げロツト43の基部は、押え
下げ軸46に回動自在に取付けられている。また
上記押え下げ軸46には、押え下げテコ44の基
部がねじ47によつて固着されている。この押え
下げテコ44の先端は、上記押え下げロツト43
に突設されたピン45によつて押え下げられ上記
押え下げ軸46が回動されるようになつている。
また押え下げ軸46の端部には、針板48の下面
に位置するように押え金49が取付けられ、上記
押え下げ軸46の回動に伴なつて押え金49と針
板48との間に間隙を生ずるようになつている。 Further, a bifurcated block 38 is attached to the tip of the knee raising lever 32 with a bolt 37. A presser foot lowering plate 41 is attached to the bifurcated block 38, which is fixed by screws 39 and 40 and extends upward. As shown in FIG. 4, the tip of a presser foot lowering rod 43 is rotatably attached to the upper end of the presser foot pull-out plate 41 with a bolt 42. The base of the presser foot lowering rod 43 is rotatably attached to a presser foot lowering shaft 46. Further, the base of the presser foot lowering lever 44 is fixed to the presser foot lowering shaft 46 with a screw 47. The tip of this presser foot lowering lever 44 is connected to the presser foot lowering rod 43.
The presser foot lowering shaft 46 is rotated by being held down by a pin 45 which is provided protrudingly.
Further, a presser foot 49 is attached to the end of the presser foot lowering shaft 46 so as to be located on the lower surface of the throat plate 48, and as the presser foot lowering shaft 46 rotates, the space between the presser foot 49 and the throat plate 48 is It is designed to create a gap between the two.
また上記膝上げ軸29の軸受30の後部には、
第5図、第6図に示すように突上板テコ50の基
部がボルト53により回動自在に取付けられてい
る。上記基部には、軸29の周に沿つて長孔状の
滑溝51が設けられ、この滑溝51には、膝上げ
軸29に固定された溝ピン52が嵌入されてい
る。また突上板テコ50の先端には、芯ねじ54
により中間ジヨイント55の一端が回動自在に連
結されている。また中間ジヨイント55の他端に
は芯ねじ56によりシリンダージヨイント57の
一端が回動自在に連結されている。またシリンダ
ージヨイント57の他端は、ミシン駆動モータ
(図示せず)の停止スイツチと連動して駆動する
エアシリンダ58とナツト59によつて連結され
ている。上記エアシリンダ58は、ミシンテーブ
ル60の下面に固定されたブラケツト61にナツ
ト62によつて取付けられている。 In addition, at the rear of the bearing 30 of the knee raising shaft 29,
As shown in FIGS. 5 and 6, the base of the raised plate lever 50 is rotatably attached with a bolt 53. As shown in FIGS. A long hole-shaped sliding groove 51 is provided in the base along the circumference of the shaft 29, and a groove pin 52 fixed to the knee raising shaft 29 is fitted into this sliding groove 51. Moreover, a core screw 54 is attached to the tip of the raised plate lever 50.
One end of the intermediate joint 55 is rotatably connected. Further, one end of a cylinder joint 57 is rotatably connected to the other end of the intermediate joint 55 by a core screw 56. The other end of the cylinder joint 57 is connected by a nut 59 to an air cylinder 58 which is driven in conjunction with a stop switch of a sewing machine drive motor (not shown). The air cylinder 58 is attached to a bracket 61 fixed to the lower surface of a sewing machine table 60 with a nut 62.
また上記膝上げ軸29前端(軸受30の前方)
には、第7図、第8図に示すように膝上げスリー
ブ63が回動自在に装着されている。この膝上げ
スリーブ63には膝上げ軸29の周に沿つて長孔
状の滑溝64が設けられ膝上げ軸29に固着され
た溝ピン65が嵌入されている。また上記膝上げ
スリーブ63の上記滑溝64の前部には、ボルト
66が取付けられ膝上げスリーブに挿入されてい
る膝上げ棒67が固定されている。 In addition, the front end of the knee raising shaft 29 (front of the bearing 30)
As shown in FIGS. 7 and 8, a knee-raising sleeve 63 is rotatably attached to the knee-raiser sleeve 63. This knee raiser sleeve 63 is provided with an elongated sliding groove 64 along the circumference of the knee raiser shaft 29, into which a groove pin 65 fixed to the knee raiser shaft 29 is fitted. Further, a knee-raising rod 67 is fixed to the front part of the sliding groove 64 of the knee-raising sleeve 63, and a bolt 66 is attached to the knee-raising rod 67, which is inserted into the knee-raising sleeve.
次に以上のように構成された本考案に係る止め
縫装置の作用を説明する。 Next, the operation of the tacking device according to the present invention constructed as above will be explained.
第9図は、本考案にかかる止め縫い装置の突上
げ板27と押え金49のそれぞれの場合における
位置的関係を示し、第10図は、それぞれの場合
における膝上げ軸29と膝上げ棒67の位置を示
す図である。なお第9図中68はすくい縫をする
針、69は布を送る送り歯である。本考案の止め
縫を行なうには、膝上げ軸29の回動と突上板2
7の旋回振り運動位置と押え金49の上下位置の
関係を順序正しく作動させる必要があり、この作
動を図によつて説明する。 FIG. 9 shows the positional relationship between the push-up plate 27 and the presser foot 49 of the securing stitching device according to the present invention, and FIG. 10 shows the knee-lifting shaft 29 and the knee-lifting bar 67 in each case. FIG. In FIG. 9, 68 is a needle for blind stitching, and 69 is a feed dog for feeding cloth. To perform the locking stitch of the present invention, rotation of the knee raising shaft 29 and raising plate 2 are required.
It is necessary to operate the relationship between the rotation swing movement position 7 and the vertical position of the presser foot 49 in the correct order, and this operation will be explained with reference to the drawings.
前述した如く通常の縫製中には一針毎に突上板
27が定角の振り運動をして布地を突き上げ掬作
用をしこれを針68によつてすくい縫をしてい
る。第9図a,b′は通常の縫製時を示すもので、
針68は、突上伝動軸26によつて旋回振り運動
している突上げ板27にかすかに接触しながら、
布地をすくい縫いする。布地は針板48と押え金
49の間に位置し、押え金49は、図中矢印で示
した送り歯69の旋回運動にしたがつて、針板4
8の下面より下側に圧動されながら針板48下面
で上下運動し布地を移動している。その場合第1
0図aに示すように膝上げ軸29と膝上げ棒67
は回動せず溝ピン52は突上げ板テコ50の滑溝
51の一方の端に密接しており膝上げ棒67はC
矢視図に示すように回動しない。 As described above, during normal sewing, the raised plate 27 swings at a constant angle for each stitch to push up and scoop the fabric, which is then sewn by the needle 68. Figures 9a and b' show normal sewing.
The needle 68 slightly contacts the thrusting plate 27 which is being rotated by the thrusting transmission shaft 26, while
Stitch the fabric. The fabric is located between the throat plate 48 and the presser foot 49, and the presser foot 49 moves the needle plate 4 along with the rotational movement of the feed dog 69 shown by the arrow in the figure.
While being pressed downward from the bottom surface of the throat plate 48, it moves up and down on the bottom surface of the throat plate 48 to move the fabric. In that case the first
As shown in Figure 0a, the knee-raising shaft 29 and the knee-raising rod 67
does not rotate, the groove pin 52 is in close contact with one end of the sliding groove 51 of the thrust plate lever 50, and the knee raising bar 67 is
It does not rotate as shown in the arrow view.
第9図bは、上記通常の縫製が終了し、止め縫
が作動した時の突上板27の位置で、針68は上
記と同様に旋回振り運動をしている突上板27に
かすかにふれる程度ですくい縫を行なつている。
但し押え金49を針板48より離れさせ、布の送
り寸法を減少せしめ、縫目を重ねて縫製し止め縫
を形成するようにしている。この場合、第10図
bの膝上げ軸29は、押え金49が下つて縫目を
重ねて縫製するまで左方に回動する。滑溝64中
を溝ピン65が動き膝上げ棒は回動しない。 FIG. 9b shows the position of the raised plate 27 when the above-mentioned normal sewing is completed and the locking stitch is activated, and the needle 68 slightly touches the raised plate 27 which is making the same swinging motion as above. I'm doing the blind stitching just enough to touch it.
However, the presser foot 49 is moved away from the throat plate 48, the feed dimension of the cloth is reduced, and the stitches are sewn in an overlapping manner to form a tacking stitch. In this case, the knee raiser shaft 29 in FIG. 10b is rotated to the left until the presser foot 49 is lowered and the stitches are sewn one on top of the other. The groove pin 65 moves in the sliding groove 64, and the knee raising bar does not rotate.
上記止め縫(重ね縫)が完了し、第6図に示す
ようにエアシリンダが駆動され、空環縫(結び
目)機構が作用すると、第9図cに示すように突
上板27の位置が変換するため、布地は突上板に
よつて掬われず、、空環縫が形成される。この場
合の押え金49は、通常の位置を保持している。
この場合、第10図cの膝上げ軸29は空環縫機
構の作用により突上板テコ50が左方に回動する
ため、突上板テコ50、滑溝51に嵌合されてい
る溝ピン52が突上板テコ52の滑溝51の一方
の端に密着され左方(第10図で反時計方向)に
回動する。 When the above-mentioned tacking stitches (overlapping stitches) are completed, the air cylinder is driven as shown in FIG. 6, and the empty chain stitch (knot) mechanism is activated, the position of the raised plate 27 is changed as shown in FIG. 9c. Due to the conversion, the fabric is not scooped up by the raised plate, and a hollow chain stitch is formed. The presser foot 49 in this case maintains its normal position.
In this case, the knee raising shaft 29 in FIG. The pin 52 is brought into close contact with one end of the sliding groove 51 of the raised plate lever 52 and rotated to the left (counterclockwise in FIG. 10).
最後に膝当て操作をすると、針板48の下面の
押え金49を押下げて針板48と押え金49の間
に布地を着脱する間隙を生じさせる。この場合突
上板27は前方に大きく旋回して静止する。同時
に第10図dに示すように膝上げ軸29は大きく
回動し溝ピン65は滑溝64の端に当り膝上げ棒
67は反時計方向に回動する。 Finally, when the knee pad is operated, the presser foot 49 on the lower surface of the throat plate 48 is pressed down, creating a gap between the throat plate 48 and the presser foot 49 for attaching and removing the fabric. In this case, the raised plate 27 swings forward significantly and remains stationary. At the same time, as shown in FIG. 10d, the knee raising shaft 29 rotates greatly, the groove pin 65 hits the end of the sliding groove 64, and the knee raising rod 67 rotates counterclockwise.
以上述べたように本考案に係る止め縫装置は、
すくい縫の最終段階においてミシン操作によつて
重ね縫と空環縫を併用してほつれを防止するの
で、簡単な操作によつて、すくい縫の縫目の形が
くずれずかすほつれの発生する懸念のない止め縫
が出来るものである。 As mentioned above, the securing stitching device according to the present invention is
At the final stage of blind stitching, the sewing machine uses a combination of overlapping stitches and empty chain stitches to prevent fraying, so this simple operation eliminates the concern that the shape of the blind stitch stitches may be distorted or fraying may occur. It is possible to make tacking stitches without any seams.
第1図は膝上げ機構の縦断面側面図、第2図
は、第1図の−線視図、第3図は布送り幅を
小さくする止め縫機構の正面図(第2図の−
線視図)、第4図は第3図の要部斜視図、第5図
および第6図は空環縫装置の正面断面図(第2図
の−線視)で、第5図は作動していない状態
を示す図、第6図は作動している状態を示す図、
第7図は空環縫装置の側面図(第2図−線視
図)、第8図は第7図の要部斜視図、第9図はそ
れぞれの場合における突上板と押え金の位置的関
係を示す図(第2図の−線視図で、a,a′は
通常縫製の場合の図、bは止め縫の場合の図、c
は空環縫の場合の図、d膝当操作中の図、、第1
0図は第8図のA−A、B−B断面およびC−矢
視のそれぞれの場合における膝上げ軸と膝上げ棒
の位置的関係を示す図で、aは通常の縫製の場合
の図、bは止め縫の場合の図、cは空環縫の場合
の図、dは膝当て動作中の図である。
1……上軸、2……プリー、3……偏心カム、
4……偏心カムエキセンスリーブ、5……始動レ
バー、6……揺動レバー、6a……筒状部、7…
…ピン、8……ねじ、9……アーム本体、10…
…跳縫切換軸、11……すくい下げ偏心カム、1
2……スリーブ、13,14……ねじ、15,1
6……カラー、17……ねじ棒、18……ナツ
ト、19……連動板、20,21……ボール、2
2……芯ねじ、23……球受けロツト、24……
芯ねじ、25……締めねじ、26……突上伝動
軸、27……突上板、28……突上板ナツト、2
9……膝上げ軸、30……軸受、31……スリー
ブ、32……膝上げテコ、32a……ボルト、3
3……ばね掛けカラー、34……ばね掛けピン、
35……コイルばね、36……ねじ、37……ボ
ルト、38……二股ブロツク、39,40……ね
じ、41……押え下げ引き板、42……ボルト、
43……押え下げロツト、44……押え下げテ
コ、45……ピン、46……押え下げ軸、47…
…ねじ、48……針板、49……押え金、50…
…突上板テコ、51……滑溝、52……溝ピン、
53……ボルト、54……芯ねじ、55……中間
ジヨイント、56……芯ねじ、57……シリンダ
ージヨイント、58……エアシリンダ、59……
ナツト、60……ミシンテーブル、61……ブラ
ケツト、62……ナツト、63……膝上げスリー
ブ、64……滑溝、65……溝ピン、66……ボ
ルト、67……膝上げ棒、68……針、69……
送り歯。
Fig. 1 is a vertical cross-sectional side view of the knee raising mechanism, Fig. 2 is a - line view in Fig. 1, and Fig. 3 is a front view of the tacking mechanism that reduces the cloth feed width (Fig. 2 -
Fig. 4 is a perspective view of the main part of Fig. 3, Fig. 5 and Fig. 6 are front sectional views of the empty chain stitching device (viewed from - line in Fig. 2), and Fig. 5 shows the operation. Figure 6 shows the state in which it is not activated, and Figure 6 shows it in the activated state.
Fig. 7 is a side view of the empty chain stitching device (Fig. 2 - line view), Fig. 8 is a perspective view of the main part of Fig. 7, and Fig. 9 is the position of the raised plate and presser foot in each case. Diagram showing the relationship (a - line view of Figure 2, a and a' are the diagrams for normal sewing, b is the diagram for the case of tacking stitches, c
is a diagram for empty chain stitching, d is a diagram during knee pad operation, 1st
Figure 0 is a diagram showing the positional relationship between the knee-raising shaft and the knee-raising rod in each case of cross-sections A-A, B-B and arrow C in Figure 8, and a is a diagram for normal sewing. , b is a diagram showing the case of tie stitching, c is a diagram of the case of empty chain stitching, and d is a diagram of the knee pad in operation. 1... Upper shaft, 2... Pulley, 3... Eccentric cam,
4... Eccentric cam eccentric sleeve, 5... Starting lever, 6... Rocking lever, 6a... Cylindrical portion, 7...
...Pin, 8...Screw, 9...Arm body, 10...
... Jump stitch switching shaft, 11 ... Lowering eccentric cam, 1
2... Sleeve, 13, 14... Screw, 15, 1
6... Collar, 17... Threaded rod, 18... Nut, 19... Interlocking plate, 20, 21... Ball, 2
2...Core screw, 23...Ball receiving rod, 24...
Core screw, 25...Tightening screw, 26...Protruding transmission shaft, 27...Protruding plate, 28...Protruding plate nut, 2
9... Knee lift shaft, 30... Bearing, 31... Sleeve, 32... Knee lift lever, 32a... Bolt, 3
3... Spring hanging collar, 34... Spring hanging pin,
35... Coil spring, 36... Screw, 37... Bolt, 38... Bifurcated block, 39, 40... Screw, 41... Presser foot pull plate, 42... Bolt,
43... Presser foot lowering rod, 44... Presser foot lowering lever, 45... Pin, 46... Presser foot lowering shaft, 47...
...screw, 48...throat plate, 49...presser foot, 50...
...Protruding plate lever, 51... Sliding groove, 52... Groove pin,
53... Bolt, 54... Core screw, 55... Intermediate joint, 56... Core screw, 57... Cylinder joint, 58... Air cylinder, 59...
Nut, 60... Sewing machine table, 61... Bracket, 62... Nut, 63... Knee lifter sleeve, 64... Smooth groove, 65... Groove pin, 66... Bolt, 67... Knee raiser bar, 68 ...Needle, 69...
Feed dog.
Claims (1)
上記突上板27に接触して駆動される針68によ
つてすくい縫をするすくい縫ミシンにおける止め
縫装置において、膝当て機構を有する膝上げ軸2
9に、膝上げ軸29の回動に伴なつて押え金49
を下方に移動させ止め縫を行なう手段と、上記膝
上げ軸29に基端部が回動自在に取付けられ、取
付けられた部分に滑溝51が穿設され、この滑溝
51を挿通して上記膝上げ軸29に固着された溝
ピン52により回動が制限された突上板テコ50
と、この突上板テコ50の先端がミシン駆動用モ
ータの停止スイツチに関連づけられたエアシリン
ダ58によつて回動される手段と、上記突上板テ
コ50の前部の膝上げ軸29の前端部に回動自在
に装着され、装着部に穿設された滑溝64を挿通
して上記膝上げ軸29に固着された溝ピン65に
より回動を制限された膝上げスリーブ63とを具
備してなり、止め縫後、上記エアシリンダの作用
により突上板27を前に位置を変換させて旋回振
りを行ない、針68と突上板27の接触を断ち空
環縫を行なうすくい縫ミシンにおける止め縫装
置。 A lock stitching device for a blind stitch sewing machine that scoops up fabric by swinging the raised plate 27 at a fixed angle and performs blind stitching with a needle 68 that is driven in contact with the raised plate 27, and has a knee pad mechanism. Knee raise axis 2
9, as the knee raising shaft 29 rotates, the presser foot 49
The proximal end is rotatably attached to the above-mentioned knee raising shaft 29, and a sliding groove 51 is bored in the attached part. A raised plate lever 50 whose rotation is restricted by a groove pin 52 fixed to the knee raising shaft 29
, means for rotating the tip of the uplift plate lever 50 by an air cylinder 58 associated with a stop switch of the sewing machine drive motor, and a means for rotating the tip of the uplift plate lever 50 by means of an air cylinder 58 associated with a stop switch of the sewing machine drive motor; A knee-raising sleeve 63 is rotatably attached to the front end and whose rotation is restricted by a groove pin 65 fixed to the knee-raising shaft 29 by passing through a sliding groove 64 bored in the mounting part. This is a blind stitch sewing machine in which, after tacking, the position of the raised plate 27 is changed forward by the action of the air cylinder, and the raised plate 27 is pivoted, thereby breaking contact between the needle 68 and the raised plate 27, and performing empty chain stitching. Securing device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8218082U JPS58185183U (en) | 1982-06-02 | 1982-06-02 | Tie-stitch device for blind-stitch sewing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8218082U JPS58185183U (en) | 1982-06-02 | 1982-06-02 | Tie-stitch device for blind-stitch sewing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58185183U JPS58185183U (en) | 1983-12-09 |
JPS6314776Y2 true JPS6314776Y2 (en) | 1988-04-25 |
Family
ID=30091255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8218082U Granted JPS58185183U (en) | 1982-06-02 | 1982-06-02 | Tie-stitch device for blind-stitch sewing machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58185183U (en) |
-
1982
- 1982-06-02 JP JP8218082U patent/JPS58185183U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58185183U (en) | 1983-12-09 |
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