JPH0798115B2 - Thread cutting device for eyelet sewing machine - Google Patents
Thread cutting device for eyelet sewing machineInfo
- Publication number
- JPH0798115B2 JPH0798115B2 JP22287489A JP22287489A JPH0798115B2 JP H0798115 B2 JPH0798115 B2 JP H0798115B2 JP 22287489 A JP22287489 A JP 22287489A JP 22287489 A JP22287489 A JP 22287489A JP H0798115 B2 JPH0798115 B2 JP H0798115B2
- Authority
- JP
- Japan
- Prior art keywords
- needle
- thread
- looper
- sewing machine
- needle thread
- 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 - Lifetime
Links
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は鳩目穴かがりミシンの糸切り装置、特に糸ほつ
れを防止出来る鳩目穴かがりミシンの糸切り装置に関す
るものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thread trimming device for eyelet stitching machines, and more particularly to a thread trimming device for eyelet stitching machines capable of preventing fraying.
針糸を持ちミシン機構に連動し上下動しつゝ揺振する針
を有する頭部と、針孔を持つ針板と、ルーパー糸を持つ
ルーパーと、そのルーパー糸をさばくスプレッダー及び
ルーパー糸を持たないルーパーと、針糸をさばくスプレ
ッダーを支持し回動可能としたルーパー台と、ミシン機
構に連動し支持枠に対し移動する移動体とより成り、定
位置に固定配置した布に対し上記移動体を一方向（後
方）に移動して鳩目穴かがり縫目の一方の平行縫目を形
成し、（針を揺振させながら180゜針を回す回転制御に
よる）針とルーパーブラケットとを同期回動して鳩目部
を形成し、次いで上記移動体を逆方向（前方）に移動し
て他方の平行縫目を形成して定位置に停止する鳩目穴か
がり縫いミシンが知られている。It has a head that has a needle thread and moves up and down in synchronization with the sewing machine mechanism, and a needle plate that has a needle hole, a looper that has a looper thread, and a spreader and a looper thread that separates the looper thread. It consists of a looper that does not rotate, a looper base that supports the spreader that handles the needle thread and that can rotate, and a moving body that moves with respect to the support frame in conjunction with the sewing machine mechanism. In one direction (rearward) to form one parallel stitch of eyelet overlock stitch, and the needle and looper bracket are synchronously rotated (by rotation control of rotating the needle 180 ° while shaking the needle) There is known an eyelet buttonhole sewing machine which forms an eyelet portion and then moves the movable body in the reverse direction (forward) to form the other parallel stitch and stops at a fixed position.
第２図は鳩目穴かがりミシンにより１サイクルの被縫製
布11の縫製を終了した状態の縫目構成を示す。この図か
ら明らかなように針12は上死点で停止され、針糸１はル
ーパー糸２のループ３の中及び針板４の針孔５を通り針
糸ループ６を形成し、この針糸ループ６は右ルーパー７
が針糸１をすくって、右スプレッダー８がさばいた状態
で三角形状に拡げられ保持されている。そして、針糸切
りメス９はメス固定ねじ9aにより図示しないメス調節台
に長穴9bを介して約45゜後方向に調節可能に固定され、
このメス調節台はルーパー台13の支点軸に回動可能な係
止片を持つメス作動腕にナットで固定され上下方向に位
置調整可能となっている。縫製終了後、上記メス作動腕
の係止片を駆動源により下方に押されることにより上記
支点軸を中心として矢印の方向に回動してその切刃部10
によって針糸ループ６の部分で縫目側、即ち右ルーパー
７に掛かっている針糸部分が切断されるようになってい
る。FIG. 2 shows a stitch structure in a state in which the sewing of the cloth 11 to be sewn for one cycle is completed by the eyelet buttonhole sewing machine. As is apparent from this figure, the needle 12 is stopped at the top dead center, the needle thread 1 passes through the loop 3 of the looper thread 2 and the needle hole 5 of the needle plate 4 to form a needle thread loop 6, and this needle thread 1 Loop 6 is right looper 7
Scoops the needle thread 1 and the right spreader 8 is spread and held in a triangular shape in a flared state. Then, the needle thread trimming knife 9 is fixed to a knife adjusting base (not shown) by a knife fixing screw 9a through a slot 9b so as to be adjustable backward about 45 °,
This knife adjusting base is fixed by a nut to a knife working arm having a rotatable locking piece on a fulcrum shaft of the looper stand 13 so that the position can be adjusted in the vertical direction. After the completion of sewing, the locking piece of the knife operating arm is pushed downward by the drive source to rotate in the direction of the arrow around the fulcrum shaft and the cutting edge portion 10 thereof.
Thus, the needle thread loop 6 is cut at the stitch side, that is, the needle thread portion hanging on the right looper 7.
又、ルーパー及びスプレッダーは左右一対であり、各ル
ーパーはルーパー台13にねじで固定され、スプレッダー
はルーパー台13の孔にその軸を遊嵌すると共にその軸方
向及び回転方向はルーパー台13にねじで固定された軸を
持つスプレッダーストッパー14で支持され、且つ尾部8a
はスプレッダーばね8bにて内側方向に常には附勢されて
いる。A pair of left and right loopers and spreaders are fixed to the looper base 13 with screws. The spreaders loosely fit their shafts in the holes of the looper base 13, and their axial and rotational directions are screwed to the looper base 13. Is supported by a spreader stopper 14 having a shaft fixed by and a tail portion 8a
Is always biased inward by a spreader spring 8b.
然しながら上記のような従来の鳩目穴かがりミシンの糸
切り装置によれば針糸１は第３図（第２図の矢印方向よ
り見る）に示すように右ルーパー７と右スプレッダー８
とによって三角形状に拡げられた針糸ループ６部分にお
いて縫目側、即ち右ルーパー７に掛かっている部分Ａで
切断され、切断された縫目側の針糸は縫目自体に与えら
れている張力により縫目側に引き込まれ、更に糸切り後
針糸を縫製素材から抜き出す際針側の針糸との摩擦によ
り縫目側の針糸がルーパー糸ループから抜け易くなり糸
ほつれの現象が発生する。However, according to the conventional thread trimming device of the eyelet buttonhole sewing machine, the needle thread 1 has the right looper 7 and the right spreader 8 as shown in FIG. 3 (viewed from the direction of the arrow in FIG. 2).
The needle thread loop 6 portion expanded in a triangular shape by and is cut at the stitch side, that is, at the portion A hanging on the right looper 7, and the cut needle thread on the stitch side is given to the stitch itself. When the needle thread is pulled into the stitch side by tension and the needle thread is pulled out from the sewing material after thread trimming, the needle thread on the stitch side easily comes off from the looper thread loop due to friction with the needle thread on the needle side, and the thread fray phenomenon occurs. To do.
本発明は上記の欠点を除くようにしたものである。The present invention eliminates the above drawbacks.
本発明の鳩目穴かがりミシンの糸切り装置は針糸を持ち
ミシン機構に連動し上下動しつゝ揺振する針を有する頭
部と、針孔を持つ針板と、針と協同して縫目を形成する
ルーパー糸を持つルーパーと、そのルーパー糸をさばく
スプレッダー及びルーパー糸を持たないルーパーと、針
糸をさばくスプレッダーを支持し回動可能としたルーパ
ー台と、ミシン機構に連動し支持枠に対し移動する移動
体とより成り、定位置に固定配置した布に対し上記移動
体を一方向に移動して鳩目穴かがり縫目の一方の平行縫
目を形成し、針とルーパー台とを同期回動して鳩目部を
形成し、次いで上記移動体を逆方向に移動して他方の平
行縫目を形成して定位置に停止する鳩目穴かがりミシン
において、遊端に切刃部を形成すると共にその近傍に切
り欠き部を形成する針糸切りメスを有し、ルーパーとス
プレッダーにより形成される針糸ループの一方を切り欠
き部が回避すると共に他方を切刃部が切断し、針糸ルー
プの針側の針糸を切断することを特徴とする。The thread cutting device of the eyelet boring machine of the present invention has a head having a needle having a needle thread and moving up and down in synchronization with the sewing machine mechanism, a needle plate having a needle hole, and a needle in cooperation with the sewing machine. A looper that has looper threads that form the eyes, a spreader that determines the looper thread and a looper that does not have the looper thread, a looper base that supports the spreader that determines the needle thread and that is rotatable, and a support frame that is linked to the sewing machine mechanism. The movable body is composed of a movable body that moves with respect to the cloth, and the movable body is moved in one direction with respect to the cloth fixedly arranged at a fixed position to form one parallel stitch of the eyelet eyeholing stitch, and the needle and the looper base are connected. In the eyelet buttonhole sewing machine that rotates synchronously to form the eyelet section, then moves the movable body in the opposite direction to form the other parallel stitch and stops at a fixed position, the cutting edge section is formed at the free end. And form a notch near it Having a needle thread cutting knife, the notch part avoids one of the needle thread loops formed by the looper and the spreader, and the cutting edge part cuts the other, and the needle thread on the needle side of the needle thread loop is cut. Is characterized by.
本発明の鳩目穴かがりミシンの糸切り装置においては針
糸ループを形成している針糸が針側、即ち右スプレッダ
ーに掛かっている部分で切断されるようになる。In the thread cutting device of the eyelet buttonhole sewing machine of the present invention, the needle thread forming the needle thread loop is cut at the needle side, that is, at the portion hanging on the right spreader.
以下図面によって本発明の実施例を説明する。 Embodiments of the present invention will be described below with reference to the drawings.
本発明においては第１図に示すように針糸切りメス９の
水平長さを十分に大きくし、これを針糸切断のため回動
した際、その切刃部10によって針糸ループ６の部分にお
いて右スプレッダー８に掛かっている針側の針糸１を切
断せしめるようにする。In the present invention, as shown in FIG. 1, the horizontal length of the needle thread trimming knife 9 is made sufficiently large, and when the needle thread trimming knife 9 is rotated for cutting the needle thread, the portion of the needle thread loop 6 is cut by the cutting blade portion 10. At, the needle thread 1 on the needle side hanging on the right spreader 8 is cut.
尚15は針側の針糸１を切断する時、縫目側の針糸１との
干渉を防ぐため針糸切りメス９の針糸１に対向する側の
面に設けた切り欠きを示す。Reference numeral 15 denotes a notch provided on the surface of the needle thread trimming knife 9 facing the needle thread 1 in order to prevent interference with the needle thread 1 on the stitch side when the needle thread 1 on the needle side is cut.
本発明の鳩目穴かがりミシンの糸切り装置は上記のよう
な構成であるから針糸１は第３図のＢ部分で切断され糸
切り後の糸残り長さを第３図において長さｌだけ長くす
ることが出来、糸ほつれが発生しないようになる。Since the thread cutting device of the eyelet buttonhole sewing machine of the present invention has the above-mentioned structure, the needle thread 1 is cut at the portion B in FIG. 3 and the thread remaining length after thread cutting is the length l in FIG. It can be made longer, and thread fraying will not occur.
又鳩目穴かがりで流れ閂止め無しの場合別の工程として
閂止めを行うが、この時針糸が長く残っていると他の糸
（芯糸）を含めて糸端の処理がし易く、又閂止めの縫目
から針糸の糸端がケバ状にはみ出すことが無いのできれ
いな縫目が得られる等の利点がある。In addition, when eyelet boring is performed and there is no bar tacking, bar tacking is performed as a separate process. At this time, if the needle thread remains long, it is easy to process the thread end including other thread (core thread), and bar tacking is also performed. Since the thread end of the needle thread does not stick out like a fluff from the seam for stop, there is an advantage that a clean seam can be obtained.
第１図は本発明の鳩目穴かがりミシンの糸切り装置によ
る針糸切断位置の説明図、第２図は従来の鳩目穴かがり
ミシンの糸切り装置による針糸切断位置の説明図、第３
図は針糸ループにおける右ルーパーと右スプレッダー及
び針糸切断位置の関係を示す説明図である。 １……針糸、２……ルーパー糸、３……ルーパー糸のル
ープ、４……針板、５……針孔、６……針糸ループ、７
……右ルーパー、８……右スプレッダー、8a……尾部、
8b……スプッダーばね、９……針糸切りメス、9a……メ
ス固定ねじ、9b……長穴、10……切刃部、11……被縫製
布、12……針、13……ルーパー台、14……スプレッダー
ストッパー、15……切り欠き。FIG. 1 is an explanatory view of a needle thread cutting position by a thread cutting device of an eyelet boring machine of the present invention, FIG. 2 is an explanatory view of a needle thread cutting position by a thread cutting device of a conventional eyelet boring sewing machine, and FIG.
The figure is an explanatory view showing the relationship between the right looper, the right spreader, and the needle thread cutting position in the needle thread loop. 1 ... Needle thread, 2 ... Looper thread, 3 ... Looper thread loop, 4 ... Needle plate, 5 ... Needle hole, 6 ... Needle thread loop, 7
…… Right looper, 8 …… Right spreader, 8a …… Tail,
8b: Spudder spring, 9: needle thread trimming knife, 9a: knife fixing screw, 9b: oblong hole, 10: cutting edge, 11: sewing cloth, 12: needle, 13: looper Table, 14 ... Spreader stopper, 15 ... Notch
Claims (1)
ゝ揺振する針を有する頭部と、 針孔を持つ針板と、 針と協同して縫目を形成するルーパー糸を持つルーパー
と、 そのルーパー糸をさばくスプレッダー及びルーパー糸を
持たないルーパーと、 針糸をさばくスプレッダーを支持し回動可能としたルー
パー台と、 ミシン機構に連動し支持枠に対し移動する移動体とより
成り、 定位置に固定配置した布に対し上記移動体を一方向に移
動して鳩目穴かがり縫目の一方の平行縫目を形成し、針
とルーパー台とを同期回動して鳩目部を形成し、次いで
上記移動体を逆方向に移動して他方の平行縫目を形成し
て定位置に停止する鳩目穴かがりミシンにおいて、 遊端に切刃部を形成すると共にその近傍に切り欠き部を
形成する針糸切りメスを有し、 ルーパーとスプレッダーにより形成される針糸ループの
一方を切り欠き部が回避すると共に他方を切刃部が切断
し、針糸ループの針側の針糸を切断することを特徴とす
る鳩目穴かがりミシンの糸切り装置。Claims: 1. A head having a needle thread, which has a needle thread that moves up and down in conjunction with a sewing machine mechanism to oscillate, a needle plate having a needle hole, and a looper thread which cooperates with the needle to form a stitch. The looper that it has, a spreader that handles the looper thread and a looper that does not have the looper thread, a looper base that supports the spreader that handles the needle thread and that is rotatable, and a moving body that moves with respect to the support frame in conjunction with the sewing machine mechanism. The movable body is moved in one direction with respect to the cloth fixedly arranged at a fixed position to form one parallel stitch of the eyelet hole overlock stitch, and the needle and the looper base are rotated in synchronization with each other to form the eyelet portion. In the eyelet buttonhole sewing machine that moves the movable body in the opposite direction to form the other parallel stitch and stops at a fixed position, a cutting edge is formed at the free end and a notch is formed in the vicinity thereof. Has a needle thread trimming knife that forms a section, Eyelet buttonhole sewing machine, characterized in that one of the needle thread loops formed by the spreader and the spreader is avoided by the cutout portion and the other is cut by the cutting blade portion to cut the needle thread on the needle side of the needle thread loop. Thread trimming device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22287489A JPH0798115B2 (en) | 1989-08-31 | 1989-08-31 | Thread cutting device for eyelet sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22287489A JPH0798115B2 (en) | 1989-08-31 | 1989-08-31 | Thread cutting device for eyelet sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0386196A JPH0386196A (en) | 1991-04-11 |
| JPH0798115B2 true JPH0798115B2 (en) | 1995-10-25 |
Family
ID=16789243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22287489A Expired - Lifetime JPH0798115B2 (en) | 1989-08-31 | 1989-08-31 | Thread cutting device for eyelet sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0798115B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4686025B2 (en) * | 1999-12-16 | 2011-05-18 | Ｊｕｋｉ株式会社 | Sewing machine thread trimmer |
-
1989
- 1989-08-31 JP JP22287489A patent/JPH0798115B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0386196A (en) | 1991-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH09225163A (en) | Method and device for preventing stitch loosening | |
| JP4698862B2 (en) | Sewing machine with buttons | |
| JP3499407B2 (en) | Method and apparatus for preventing seam fraying | |
| JP3535353B2 (en) | Method and apparatus for preventing seam fraying | |
| JPH0798115B2 (en) | Thread cutting device for eyelet sewing machine | |
| JP3527835B2 (en) | Method and apparatus for preventing seam fraying of double chain stitch sewing machine | |
| JP2000317176A (en) | Seam fray preventive device | |
| CA2024141C (en) | Satin stitch presser foot | |
| JP2961319B2 (en) | Embroidery sewing machine thread cutting device | |
| JPH08131678A (en) | Walking sewing machine | |
| JPS59222188A (en) | Method and apparatus for controlling decorative yarn automatic cutter blade of sewing machine | |
| US2499335A (en) | Thread-trimming and pull-off mechanism for sewing machines | |
| KR20030088369A (en) | Sewing machine | |
| US1946514A (en) | Trimming attachment | |
| JPH02134Y2 (en) | ||
| US2958301A (en) | Mecktie centralizing stitching machine | |
| JPS6115815Y2 (en) | ||
| JPH0117262Y2 (en) | ||
| JPS642706Y2 (en) | ||
| JPS5920214Y2 (en) | Overlock sewing machine overlock width switching device | |
| JPS5856634Y2 (en) | Cloth cutting knife folding device in sewing machine | |
| JPS60139280A (en) | Safety stitch and safety stitch sewing machine for forming the same | |
| JPS637026Y2 (en) | ||
| JPH01320087A (en) | Thread cutting method for automatic thread cutting sewing machine | |
| JPH0220277B2 (en) |