JPH0771593B2 - Sewing equipment - Google Patents
Sewing equipmentInfo
- Publication number
- JPH0771593B2 JPH0771593B2 JP63097553A JP9755388A JPH0771593B2 JP H0771593 B2 JPH0771593 B2 JP H0771593B2 JP 63097553 A JP63097553 A JP 63097553A JP 9755388 A JP9755388 A JP 9755388A JP H0771593 B2 JPH0771593 B2 JP H0771593B2
- Authority
- JP
- Japan
- Prior art keywords
- cloth
- feed
- presser foot
- spring
- presser
- 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 - Fee Related
Links
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- 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、所望の形状に裁断された布地の縁に沿って縁
かゞり縫いを行うための縫製方法並びにその装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing method and an apparatus therefor for performing edge stitching along an edge of a cloth cut into a desired shape.
従来技術 従来、例えばズボンの前身頃の裁断された布縁にほつれ
防止のため縁かゞり縫いを施す工程では、通常自動サー
ジングミシンが使用されている。このミシンには一般
に、プレート状の布ガイドと、その下に布厚に相当する
厚みを有し、かつ布縁端の当て定規としての機能を備え
たスペーサとが押え金手前のテーブル上に設置され、テ
ーブル上の手前側より送込まれた布地の先端をセンサで
検出して縫込みが始まり、縫終り端に達するまで縁かゞ
り縫いによる縫製が一気に自動的に行われる間、布縁を
押え金下まで案内する作用を行うようになっている。2. Description of the Related Art Conventionally, an automatic surging sewing machine is usually used in a process of sewn on the cut cloth edge of the front body of pants, for example, in order to prevent fraying. This sewing machine generally has a plate-shaped cloth guide and a spacer below it that has a thickness corresponding to the cloth thickness and that functions as a ruler for the edge of the cloth, placed on the table in front of the presser foot. The tip of the fabric fed from the front side on the table is detected by the sensor, sewing is started, and the edge of the cloth is sewn until the end of the sewing is reached Is designed to guide the lower part of the presser foot.
自動サージングミシンにはまた、布縁の曲線部分を縫合
するために針落ち手前に布縁案内用の当て定規を設ける
とともに押え金側方に補助押えを設け、送り歯による送
り作用で布縁端が当て定規に当るまで布を補助押えの回
りに旋回させるようにしたものがあり、押え金下に第一
及び第二の送り歯を左右に並設し、両送り歯に差動送り
を与えて布を旋回させるようにしたものもある(特開昭
49−96842号)。また補助押えについても傾斜させてそ
の一部で布を押え、布の旋回力を大きくしたもの(実公
昭56−46703号)、補助押えが回転するもの(特公昭60
−43989号)、ロール状のもの(特公昭57−1276号)な
ど種々のものが知られる。The automatic surging sewing machine is also provided with a pad ruler for guiding the cloth edge in front of the needle drop to stitch the curved edge of the cloth edge and an auxiliary presser foot on the side of the presser foot. There is one in which the cloth is swung around the auxiliary presser until it hits the contact ruler.The first and second feed dogs are installed side by side under the presser foot and differential feed is applied to both feed teeth. There is also one in which the cloth is swung (Japanese Patent Laid-Open No.
49-96842). In addition, the auxiliary presser is tilted and the cloth is pressed by a part of the auxiliary presser to increase the turning force of the cloth (No. Sho 56-46703), and the auxiliary presser rotates (Japanese Examined Sho 60).
-43989) and rolls (Japanese Patent Publication No. 57-1276) are known.
発明が解決しようとする課題 押え金側方の布を押える補助押えや押え金下に並設され
る差動送り歯は、布に旋回作用を与え、曲線部の縫合に
それなりの効果をもたらすが、前者の補助押えの場合、
針落ちの左右で布地に作用する押え金と送り歯は、針落
ちの左右で常に等量の布送りを行うため、曲線部の布縁
が捩れるなどの無理を与え、小回りができないうえ、曲
線のバイアス部分(布地を斜めに切断した部分)が伸び
がちとなる。The auxiliary presser for pressing the cloth on the side of the presser foot and the differential feed dog arranged in parallel under the presser foot give a swivel action to the cloth, and bring about a certain effect in stitching the curved portion. , In the case of the former auxiliary presser foot,
The presser foot and feed dog, which act on the fabric on the left and right of the needle drop, always feed the same amount on the left and right of the needle drop, which causes the fabric edge of the curved part to be twisted, making it impossible to make small turns. The biased part of the curve (the part where the fabric is cut diagonally) tends to stretch.
本発明は、かゝる問題を解決することを第1の目的とす
る。また後者の差動送り歯も、曲線部分を縫合する際の
布送りを円滑かつ確実に行うのには十分でなく、小回り
もできにくい。The first object of the present invention is to solve such a problem. Also, the latter differential feed dog is not enough to smoothly and reliably feed the cloth when sewing the curved portion, and it is also difficult to make a small turn.
本発明は、かゝる問題を解決することを第1の目的とす
る。The first object of the present invention is to solve such a problem.
補助押えは上述するように、布を反時計方向に旋回さ
せ、布縁端を当て定規に当てる作用を行うが、直線部を
縫うときと曲線部を縫うときとでは押え圧を加減するの
が望ましい。As described above, the auxiliary presser works to rotate the cloth counterclockwise and apply the cloth edge to the contact ruler.However, the presser foot pressure is adjusted when sewing the straight part and the curved part. desirable.
上述の特公昭60−43989号の補助押えは、直線部を縫う
ときと、凸状に彎曲する曲線部(アウトカーブ)を縫う
ときとで上昇位置と下降位置に切換えられ(凹状に彎曲
するインカーブでは補助押えは必要なく上昇位置に留め
られる)、アウトカーブを縫う時には降下して布の旋回
とともに回転するようになっているが、直線部を縫う時
でも直進性を確実にするために布を軽く押えて布縁端を
当て定規に当て、縫いずれが生じないように案内するの
が望ましい。The auxiliary presser of Japanese Patent Publication No. 60-43989 described above can be switched between a rising position and a descending position when sewing a straight portion and when bending a curved portion (outcurve) that bends in a convex shape (incurve that bends in a concave shape). However, the auxiliary presser is not necessary and it can be held in the raised position.When sewing out curves, it descends and rotates with the turning of the cloth, but even when sewing a straight part, the cloth should be straightened to ensure straightness. It is desirable to lightly press the edge of the cloth against the ruler and guide it so that no stitching will occur.
したがって本発明は、直線部を縫うときには軽く、アウ
トカーブを縫うときには強く加圧して右への旋回力を増
し、布の回転を安定化させて円滑な曲線縫いが行えるよ
うにすることを第2の目的とする。Therefore, according to the present invention, when the straight portion is sewn, it is light, and when the out-curve is sewn, it is strongly pressed to increase the turning force to the right to stabilize the rotation of the cloth so that the smooth curved sewing can be performed. The purpose of.
課題の解決手段 第1の目的を達成するための縫製装置は、押え金下の右
側及び左側に並設される第一及び第二の送り歯と、両送
り歯に差動送りを与える左右差動送り機構とを有するオ
ーバーロックミシンと、その針落ち手前に設けられる布
縁案内用のガイドとを備えた縫製装置において、左側の
第二の送り歯の布への作用部を右側の第一の送り歯の布
への作用部より小さくすると共に、布送り方向後方にず
らしたことを特徴とする。Means for Solving the Problem A sewing device for achieving a first object is a first and second feed dogs arranged in parallel on the right side and the left side under a presser foot, and a left-right difference that gives a differential feed to both feed teeth. In a sewing device including an overlock sewing machine having a dynamic feed mechanism, and a cloth edge guide provided before the needle drop, in a sewing device provided with a second feed dog on the left side acting on the cloth on the right side. It is characterized in that it is smaller than the acting portion of the feed dog on the cloth and is shifted rearward in the cloth feeding direction.
ここで用いられるガイドは、例えば従前のようなプレー
ト状の布ガイド並びに布厚に相当する厚みを有し、布ガ
イド下に設けられるスペーサ、当て定規などのようなも
のである。また右側の第一の送り歯は、左側の第二の送
り歯より作用部が大きくされる。これはオーバーロック
ミシンでは、針落ちの右側に送り歯がないため布が左へ
寄りがちなのを補うためである。The guide used here has a thickness corresponding to, for example, a conventional plate-shaped cloth guide and a cloth thickness, and is a spacer provided under the cloth guide, a pad ruler, or the like. The right first feed dog has a larger action portion than the left second feed dog. This is because in the overlock sewing machine, there is no feed dog on the right side of the needle drop and the cloth tends to shift to the left side.
第2の目的を達成するための縫製装置は、オーバーロッ
クミシンの押え金手前のミシンテーブル上に、布縁端を
検出して制御信号を出力するセンサと、布端縁を案内す
る当て定規と、プレート状の布ガイド及びその布ガイド
をテーブル上に布厚に応じた高さに保持すると共に、布
縁を案内するスペーサを設け、しかも前記押え金左方の
針落ち手前にテーブル上の布面向かって圧接するように
付勢される補助押えを設けた縫製装置において、前記押
え金下に位置を前後にずらして左右に配置される第一及
び第二の送り歯と、前記センサの制御信号により両送り
歯に差動送りを与える左右差動送り機構と、補助押えを
回転自在に軸支する傾斜軸を下方に付勢するバネと、前
記センサの制御信号によりバネの強さを変更する手段と
よりなることを特徴とする。A sewing device for achieving the second object includes a sensor for detecting a cloth edge and outputting a control signal on a sewing machine table in front of a presser foot of an overlock sewing machine, and a pad ruler for guiding the cloth edge. The plate-shaped cloth guide and the cloth guide are held on the table at a height according to the cloth thickness, and a spacer for guiding the cloth edge is provided, and the cloth on the table is placed in front of the needle drop on the left side of the presser foot. In a sewing device provided with an auxiliary presser which is urged so as to press against a surface, first and second feed dogs which are arranged on the left and right under the presser foot with positions shifted back and forth, and a control signal of the sensor. The left and right differential feed mechanism that differentially feeds both feed teeth, the spring that biases the tilt shaft that rotatably supports the auxiliary presser downward, and the strength of the spring are changed by the control signal of the sensor. Specially means to be To.
本装置において用いられる布ガイドは、布縁のしわ、カ
ール、折曲げなどを伸ばして押え金下に導く作用を行う
もので、好ましくは透明で、布の案内状態が見えるよう
にされ、また手前左方は上方に反らせて布挿入が行い易
いようにしてある。The cloth guide used in this device has a function of extending wrinkles, curls, bends, etc. of the cloth edge and guiding it to the bottom of the presser foot, and is preferably transparent so that the guide state of the cloth can be seen. The left side is bent upward so that the cloth can be easily inserted.
当て定規は、これを省いて布ガイドとスペーサの一部を
布切断用のメスに向って延長させて押え金右側に近接さ
せるのが望ましい。当て定規を設けたものでは、インカ
ーブを縫う場合ことにスペーサを通過後、布縁が当て定
規と押え金との間の隙間にまくれ上がり、そのため布が
正しく案内されず、布縁が布切断用のメスで切り落とさ
れることがある。当て定規を設ける代りに布ガイドとス
ペーサの一部を延長させ、押え金右側に近接させれば、
インカーブを縫う場合でも布縁が押え金に確実に案内さ
れ、上述するような布縁のまくれ上がりによる切り落し
を防ぐことができる。It is desirable that the patch ruler be omitted and a part of the cloth guide and the spacer be extended toward the cloth cutting knife so as to be close to the right side of the presser foot. With a ruler, the cloth edge rises up into the gap between the ruler and the presser foot after passing through the spacer, especially when sewing in-curves, so the cloth is not guided correctly and the cloth edge is used for cloth cutting. May be cut off with a scalpel. If you extend part of the cloth guide and spacer instead of installing a pad ruler and bring them closer to the right side of the presser foot,
Even when sewing an in-curve, the cloth edge is reliably guided by the presser foot, and it is possible to prevent the above-described cut-off due to the curling of the cloth edge.
補助押えは、傾斜軸線の回りを回転可能に軸支され、布
に片当りして布送りに伴って回転するようにされ、直線
縫い時には布面に軽く接しながら回転して布を当て定規
側へガイドし、加圧時にはその軸を中心として布を押圧
回転して布を右側へ寄せる。これにより布が無理なくス
ムースに送られるようになる。The auxiliary presser is rotatably supported around the inclined axis, and is made to hit one piece of cloth and rotate as the cloth feeds. When the pressure is applied, the cloth is pressed and rotated about its axis to move the cloth to the right side. As a result, the cloth can be smoothly fed.
補助押えの昇降手段は、例えばエアシリンダを好ましい
例として挙げることができる。An example of a preferable example of the lifting and lowering means for the auxiliary presser is an air cylinder.
バネの強さを変更するための手段としては、昇降により
バネの強さを変えるバネ押えと、バネ押えを昇降させる
エアシリンダを例として挙げることができる。Examples of means for changing the strength of the spring include a spring retainer that changes the strength of the spring by elevating and lowering, and an air cylinder that elevates and lowers the spring retainer.
作用 曲線部の縫合時において、アウトカーブを縫う場合、右
側の送り歯の送り量を左側のものよりも大にする。この
左右の差動送りにより回転中心が与えられ、布縁が右側
(反時計方向)に廻り込みながら布縁端をガイドに当て
ゝ送られる。インカーブを縫う場合には、左右の送り歯
の送り量を一致させる。これにより布は布縁端がガイド
に案内されて左側に廻り込みながら送られる。いづれの
場合も、左側の第二の送り歯は布への作用部を小さくし
たことにより、差動送りにより曲線部を縫うときの小廻
りが利き、また右側の第一の送り歯の布への作用部より
後方に設けたことにより、針落ち後方への布送りが円滑
かつ確実に行われるようになる。直線部を縫うときにも
左右の送り歯の送り量を一致させるが、直進性を増すた
めに第一の送り歯の送り量を第二の送り歯の送り量より
やゝ大きくしてもよい。Action When sewing an out-curve when sewing a curved portion, the feed amount of the right feed dog is made larger than that of the left feed dog. The center of rotation is given by this left and right differential feed, and the fabric edge is fed to the guide while the fabric edge wraps around to the right (counterclockwise). When sewing in-curves, the feed amounts of the left and right feed dogs are matched. As a result, the edge of the cloth is guided by the guide, and the cloth is fed while turning to the left. In either case, the second feed dog on the left side has a smaller acting part on the cloth, which makes it easier to turn around when bending a curved portion by differential feed, and the cloth for the first feed dog on the right side By arranging the cloth at the rear of the action portion, the cloth can be smoothly and reliably fed to the rear of the needle drop. The feed amounts of the left and right feed dogs are made to match when sewing a straight part, but the feed amount of the first feed dog may be made slightly larger than the feed amount of the second feed dog to increase straightness. .
第2の目的を達成する装置においては、適当な形状に裁
断した布をミシンテーブル上に置き、布縁をスペーサに
当て、布縁を布ガイド下に通して押え金下まで送る(こ
のとき補助押え及び押え金は持ち上げられている)。次
に補助押え及び押え金を降し、補助押えは布に軽く接触
させる。そして左右の送り歯の送り量を一致させた状態
でミシンを駆動するが、直線縫いを行う時には、補助押
えを降ろして布に軽く接触させ、左右の送り歯の送り量
を一致させる。これにより布が右側に回転しようとし、
布縁端をガイドに当て、ガイドに沿って真直ぐに進む。
縫製中、センサが曲線部を検知すると、その信号により
補助押えの押圧力が高まり、かつ右側の送り歯の送り量
が大にされ、左右の差動送りが行われるか(アウトカー
ブの場合)、或いは補助押えが上昇する(インカーブの
場合)。In the device which achieves the second object, a cloth cut into an appropriate shape is placed on the sewing machine table, the cloth edge is applied to the spacer, and the cloth edge is passed under the cloth guide and fed to the bottom of the presser foot (at this time, the auxiliary The presser foot and presser foot have been lifted). Next, the auxiliary presser foot and the presser foot are lowered, and the auxiliary presser is lightly contacted with the cloth. Then, the sewing machine is driven in a state where the feed amounts of the left and right feed dogs are made to match, but when performing linear sewing, the auxiliary presser foot is lowered and lightly contacted with the cloth to make the feed amounts of the left and right feed dogs match. This causes the cloth to try to rotate to the right,
Put the edge of the cloth on the guide and go straight along the guide.
If the sensor detects a curved portion during sewing, the signal will increase the pressing force of the auxiliary presser and increase the feed amount of the feed dog on the right side to perform differential feed to the left and right (in the case of out curve). Or, the auxiliary presser rises (in the case of in-curve).
すなわち、アウトカーブを縫うときには、補助押えの布
への加圧力を高めるとともに左右の差動送りを行う。That is, when sewing the outcurve, the pressing force of the auxiliary presser to the cloth is increased and the left and right differential feed is performed.
これにより補助押えの周りを布が補助押えの軸心を中心
として補助押えとともに回転し、布縁が当て定規又はス
ペーサに押付けられ、その縁部に沿って縁かゞり縫いが
行われる。As a result, the cloth rotates around the auxiliary presser together with the auxiliary presser about the axis of the auxiliary presser, the cloth edge is pressed against the abutting ruler or the spacer, and the hem is sewn along the edge.
インカーブを縫うときには、左右の送り歯の送り量を一
致させ、かつ補助押えを上昇させる。すると上記したと
同様となり、布が左側に廻り込みながら送られる。When sewing the in-curve, the feed amounts of the left and right feed dogs are made equal and the auxiliary presser foot is raised. Then, as described above, the cloth is fed while wrapping around on the left side.
実施例 隅にオーバーロックミシン1を配置したミシンテーブル
2上のミシン手前にはスライドテーブル3が固定具4に
よって止められ、ルーパ糸通し時などで邪魔になるとき
は手前側の矢印方向に回動されるようになっている。そ
してその上には布厚に相当する厚みを有し、彎曲した外
形線を有するスペーサ6と、プレート状の布ガイド7と
が取付ネジ8によって取付けられ、布を押え金9下へ案
内する作用を行うようになっており、布ガイド7は手前
側より押え金9に向ってセリ出す周縁部を上向きに反ら
せ、布縁が布ガイド下に挿入され易いようにしてある。Example A slide table 3 is stopped by a fixing tool 4 in front of a sewing machine on a sewing machine table 2 having an overlock sewing machine 1 arranged in a corner, and is rotated in the direction of the arrow on the front side when it interferes with the looper threading. It is supposed to be done. Then, a spacer 6 having a thickness corresponding to the cloth thickness and having a curved outline and a plate-shaped cloth guide 7 are attached thereto by means of mounting screws 8, and the action of guiding the cloth under the presser foot 9 is performed. The cloth guide 7 is designed so that the peripheral edge portion of the cloth guide 7 that is serrated from the front side toward the presser foot 9 is bent upward so that the cloth edge can be easily inserted under the cloth guide.
押え金左側方の針落ち手前の針板11上には、右側に傾斜
する傾斜軸12の下端部にペアリングよりなる補助押え14
が回転自在に設けてあり、(第3図)、針板上の布Wに
周縁の近傍部で接触し、布送りに伴って回転するように
なっている。なお補助押えの布への接触面は、慣性が小
さく、かつ小さな力で回転するベアリング自体を用いる
が、布に応じて粗面加工したり、ゴムやプラスチックで
被覆してもよい。傾斜軸12は可動台13の自由端に支持さ
れ、可動台13の基部は長孔15を通して連結板16に左右に
位置調整可能にネジ止めされ、連結板16は支持台17にピ
ン18により上下に枢動可能に軸支されている。そして支
持台17は固定台19に段付ネジ20によって軸着され、水平
に回動して取付位置が調整できるようになっている。On the needle plate 11 in front of the needle drop on the left side of the presser foot, the auxiliary presser foot 14 made by pairing is attached to the lower end of the tilt shaft 12 tilting to the right.
Is rotatably provided (see FIG. 3) and comes into contact with the cloth W on the needle plate in the vicinity of the peripheral edge thereof, and rotates with the cloth feeding. The contact surface of the auxiliary presser with respect to the cloth uses a bearing itself which has a small inertia and rotates with a small force, but may be roughened or covered with rubber or plastic depending on the cloth. The tilt shaft 12 is supported by the free end of the movable base 13, and the base of the movable base 13 is screwed to the connecting plate 16 through the long hole 15 so that the position of the connecting plate 16 can be adjusted left and right. Is pivotally supported by. The support base 17 is attached to the fixed base 19 by a stepped screw 20, and is pivoted horizontally so that the mounting position can be adjusted.
支持台17に適当間隔を置いて縦設され、可動台13を通っ
て突出する縦軸21及び22には、可動台上にそれぞれバネ
23及び24を装着し、バネ23は縦軸21に遊嵌のバネ押え25
を介して縦軸21に螺着される調節ナット26の捩込みによ
りその強さが調節され、可動台13を押下げる作用を行
う。27はバネ23よりも弱く、可動台13を下側から支承す
るバネである。一方バネ24は、縦軸22に遊嵌のバネ押え
28を押下げることによりバネ圧が可動台13に作用して可
動台13を押下げる作用を行い、バネ押え28への押えが解
除されると、上方に自由に伸び切って可動台13への押え
圧を解除するようになっている。The vertical axes 21 and 22 that are vertically installed at appropriate intervals on the support table 17 and project through the movable table 13 have springs on the movable table, respectively.
23 and 24 are attached, and the spring 23 is a spring retainer 25 that is loosely fitted on the vertical axis 21.
The strength of the adjusting nut 26 is adjusted by screwing the adjusting nut 26, which is screwed to the vertical axis 21 via the, so that the movable table 13 is pushed down. 27 is a spring that is weaker than the spring 23 and supports the movable table 13 from below. On the other hand, the spring 24 is a spring retainer that is loosely fitted to the vertical axis 22.
When the spring 28 is pushed down, the spring pressure acts on the movable table 13 to push down the movable table 13, and when the spring retainer 28 is released, the spring is fully extended upward to the movable table 13. It is designed to release the presser foot pressure.
支持台17にはまたエアシリンダ29が取着され、ロッド30
上端には縦軸22にスライド可能に嵌合する押え板31を取
付けており、エアシリンダ29の作動によりロッド30を引
込ませ、押え板31を降下させると、バネ押え28が押え込
まれ、バネ24のバネ圧を可動台13に作用させるようにな
っている。An air cylinder 29 is attached to the support 17 and the rod 30
A presser plate 31 slidably fitted to the vertical axis 22 is attached to the upper end, and when the rod 30 is retracted by the operation of the air cylinder 29 and the presser plate 31 is lowered, the spring retainer 28 is pressed in and the spring is pressed. The spring pressure of 24 is applied to the movable table 13.
両縦軸21及び22の間の可動台13上に縦設されるエアシリ
ンダ32は、第4図に示されるように、そのロッド33が可
動台13より下向きに突出しており、ロッド33を支持台17
に突き当らせた状態で更に突出させると、可動台13がバ
ネ23の作用に抗して押上げられる(このときエアシリン
ダ29は不作動状態にバネ24も不作用状態にされる)。The air cylinder 32 vertically provided on the movable table 13 between the two vertical axes 21 and 22 has a rod 33 protruding downward from the movable table 13 as shown in FIG. Stand 17
When the movable table 13 is further protruded in the state of being struck, the movable table 13 is pushed up against the action of the spring 23 (at this time, the air cylinder 29 is made inoperative and the spring 24 is made inoperative).
押え金下で左右に並列する送り歯のうち(第5図参
照)、針落ち手前の右側に位置する第一の送り歯35は、
差動送り歯とされ、後述するセンサからの出力信号に基
づいて図示しない公知の差動送り機構を利用した左右差
動送り機構により左側の第二の送り歯36と送り量が同一
か若しくはこれより大きくなるように切換えられ、送り
歯36と差動送りが行えるようになっている。その後の送
り歯は、補助送り歯37で、第一の送り歯35よりも歯が低
くされ(歯が高いと、布縁が押え金9との間に強く挟ま
れ、布を廻すときの障害となる)縫い終わり時に空環を
送出す作用を行うほかは、布を補助的に送出す作用を行
う。針落ち手前より後方に延びる第二の送り歯36は、前
後の歯を低くして(手前の低い歯はとくになくてもよ
い)布への作用部を第一の送り歯35よりも小さくし、小
廻りが利くようにしてあり、その一部は針落ち後方に位
置している。センサは、押え金手前で布前端及び後端を
検出するセンサ40と、布切断用メス39の切断線延長上の
左右に配置される二個一対よりなる布縁端検出用のセン
サ41とからなり(第2図参照)、センサ40が布前端或い
は後端を検出して発信する信号により押え金9及び補助
押え14の昇降、空環切断装置等が制御されるようになっ
ている。二個一対のセンサ41は、その両者が布縁で隠さ
れると、布縁の形状がインカーブ、片方が隠されると直
線、両方が開放されるとアウトカーブであることを判断
し、その出力信号により差動送り機構と補助押えを昇降
させるエアシリンダ並びに補助押えの布押圧力を変化さ
せるエアシリンダーを制御する。Of the feed dogs arranged side by side under the presser foot (see Fig. 5), the first feed dog 35 located on the right side before the needle drop is
The feed amount is the same as that of the second feed dog 36 on the left side or the same by the left and right differential feed mechanism utilizing a known differential feed mechanism (not shown) based on an output signal from a sensor described later. It is switched to be larger, and differential feed with the feed dog 36 can be performed. Subsequent feed dogs are auxiliary feed teeth 37 whose teeth are lower than those of the first feed teeth 35 (when the teeth are high, the cloth edge is strongly sandwiched between the presser foot 9 and the obstacle when turning the cloth. In addition to performing the action of sending the empty ring at the end of sewing, it also acts to feed the fabric as an auxiliary. The second feed dog 36, which extends rearward from the front of the needle drop, lowers the front and rear teeth (the lower front tooth may be omitted) to make the acting portion on the cloth smaller than that of the first feed tooth 35. , A small turn is made, and a part of it is located behind the needle drop. The sensor is composed of a sensor 40 for detecting the front and rear ends of the cloth in front of the presser foot, and a sensor 41 for detecting the cloth edge formed of a pair of two arranged on the left and right on the cutting line extension of the cloth cutting knife 39. As a result (see FIG. 2), the sensor 40 controls the lifting and lowering of the presser foot 9 and the auxiliary presser 14 and the air-ring cutting device according to the signal transmitted by detecting the front end or the rear end of the cloth. The two pairs of sensors 41 determine that when both of them are hidden by the cloth edge, the shape of the cloth edge is an incurve, when one is hidden, it is a straight line, and when both are open, it is an outcurve, and its output signal This controls the differential feed mechanism and the air cylinder that raises and lowers the auxiliary presser and the air cylinder that changes the cloth pressing force of the auxiliary presser.
43は押え金9の右側面に近接して設けられ、押え金下に
送り込まれた布縁端を案内する当て定規であり、44は空
環切断装置の吸込口である(第5図参照)。43 is a contact ruler which is provided near the right side surface of the presser foot 9 and guides the edge of the cloth fed under the presser foot, and 44 is a suction port of the air ring cutting device (see FIG. 5). .
本装置は以上のように構成され、布縁への縫製は次のよ
うにして行われる。This device is configured as described above, and sewing to the fabric edge is performed as follows.
所望形状に裁断された布の布縁を布ガイド下に挿入し、
布縁端をスペーサ6に沿わせて押え金下まで進ませる。
このときセンサ40が布前端を検出し、その出力信号によ
り押え金9並びに補助押え14が降下し布を押える。ミシ
ンは駆動状態にあり、そのため送り歯35、36、37の布送
り作用により布が布ガイド7、スペーサ6及び当て定規
43により案内されて送られる。Insert the cloth edge cut into the desired shape under the cloth guide,
Align the edge of the cloth along the spacer 6 and advance it to the bottom of the presser foot.
At this time, the sensor 40 detects the front end of the cloth, and the presser foot 9 and the auxiliary presser 14 are lowered by the output signal thereof to press the cloth. The sewing machine is in a driven state, so that the cloth feeding action of the feed dogs 35, 36 and 37 causes the cloth to be guided by the cloth guide 7, the spacer 6 and the pad ruler.
Guided by 43 and sent.
布送りに際しては、布縁によりセンサ40の両方が隠され
ると、エアシリンダ32のロッド33が突出して降下し、支
持台17に突き当って可動台13をバネ23の作用に抗して持
上げる。これにより補助押え14が上昇する。この際、エ
アシリンダ29は不作動状態にあってロッド30を突出さ
せ、バネ24を不作用にしている。補助押え14が上がる
と、オーバーロックミシンでは前述したように、布が左
側へ寄りがちとなる傾向があることから、布縁端がスペ
ーサ6及び当て定規43に沿い、布が左側へ回り込みなが
ら送られる。At the time of feeding the cloth, when both the sensors 40 are hidden by the cloth edge, the rod 33 of the air cylinder 32 projects and descends, hits the support base 17, and lifts the movable base 13 against the action of the spring 23. . This causes the auxiliary presser foot 14 to rise. At this time, the air cylinder 29 is in the inoperative state, the rod 30 is projected, and the spring 24 is inactivated. When the auxiliary presser foot 14 is lifted, the cloth tends to lean to the left side as described above in the overlock sewing machine. Therefore, the cloth edge is moved along the spacer 6 and the pad ruler 43 while the cloth is wrapping around to the left side. To be
右側のセンサ41が開放され、左側のセンサ41が隠される
と、エアシリンダ29のロッド30は突出位置にあり、バネ
24を不作用状態に維持する。一方、エアシリンダ32のロ
ッド33は上方に引込だ上昇位置に切換えられる。したが
って可動台13が降下し、バネ23の作用が補助押え14に及
ぶが、該バネ23は、可動台13の基部寄りに作用するため
補助押え14の布への加圧力は弱く、第3図に示されるよ
うに傾斜した状態でその一部が布に軽く接触する。これ
により布は右側へ旋回し、布縁端をスペーサ6及び当て
定規43に当てゝ直進する。以上については、左右の送り
歯35及び36の送り量が同じで、差動送りは行われない。When the right sensor 41 is opened and the left sensor 41 is hidden, the rod 30 of the air cylinder 29 is in the protruding position and the spring
Keep 24 inactive. On the other hand, the rod 33 of the air cylinder 32 is switched to the lifted position retracted upward. Therefore, the movable table 13 descends, and the action of the spring 23 extends to the auxiliary presser foot 14. However, since the spring 23 acts on the movable base 13 toward the base, the pressing force of the auxiliary presser foot 14 on the cloth is weak. As shown in Fig. 7, a part of it touches the cloth lightly in the inclined state. As a result, the cloth is swung to the right and the edge of the cloth is applied to the spacer 6 and the pad ruler 43 to go straight. Regarding the above, the feed amounts of the left and right feed dogs 35 and 36 are the same, and differential feed is not performed.
左右のセンサ41が開放されると、エアシリンダ32のロッ
ド33は引込んだ上昇位置に留まるが、エアシリンダ29が
作動されてそのロッド30が引込み、バネ押え28を押込ん
でバネ24のバネ圧を可動台13に作用させる。したがって
補助押え14は降下した状態で、バネ23とバネ24の作用に
より布に強く押付けられる。同時に右側の送り歯35の送
り量が左側の送り歯36の送り量よりも大きくされて差動
送りが行われる。これにより布は右旋回しながら送られ
る。なお補助押え14は、布が直進するときと右旋回しな
がら送られるときには、布送りに伴って反時計方向に回
動するが、特に布に強く押しつけられた時には、その押
しつけ部の布は、補助押え14とともに、補助押え14の回
転中心を中心として回転し、布縁が当て定規の方へ寄せ
られる。すなわち、補助押え14が布に回転中心を与える
ように働くので、布の回動が円滑に行われることとな
る。When the left and right sensors 41 are released, the rod 33 of the air cylinder 32 remains in the retracted and raised position, but the air cylinder 29 is actuated to retract the rod 30, and the spring retainer 28 is pushed in to push the spring pressure of the spring 24. To act on the movable table 13. Therefore, the auxiliary presser 14 is strongly pressed against the cloth by the action of the springs 23 and 24 in the lowered state. At the same time, the feed amount of the right feed dog 35 is made larger than the feed amount of the left feed dog 36, and differential feed is performed. As a result, the cloth is fed while turning right. Note that the auxiliary presser 14 rotates counterclockwise with the cloth feed when the cloth advances straight and is fed while turning right.However, when the cloth is pressed strongly against the cloth, the cloth of the pressing portion is Along with the auxiliary presser 14, the auxiliary presser 14 is rotated about the rotation center of the auxiliary presser 14, and the cloth edge is moved toward the contact ruler. That is, since the auxiliary presser 14 works to give the cloth a center of rotation, the cloth can be smoothly rotated.
布の後端がセンサ40を過ぎ、該センサ40が開放されて布
後端を検出すると、その出力信号により押え金9並びに
補助押え14が上昇するとともに図示しない空環切断装置
が作動され、形成された空環が吸込口44より吸い込ま
れ、吸込口44の内側に設けたメスで切断される。When the rear end of the cloth passes the sensor 40 and the sensor 40 is opened to detect the rear end of the cloth, the presser foot 9 and the auxiliary presser 14 are raised by the output signal thereof, and the not-shown empty ring cutting device is actuated to form. The empty ring thus sucked is sucked through the suction port 44 and is cut by a knife provided inside the suction port 44.
第6、7図は布ガイドとスペーサの他の例を示すもの
で、当て定規が省かれ、スペーサ46と布ガイド47の前側
部を押え金右側面に沿わせ、布切断用のメス39に達する
位置まで延長させている。Figures 6 and 7 show other examples of cloth guides and spacers. The ruler is omitted and the spacer 46 and the front side of the cloth guide 47 are placed along the right side surface of the presser foot, and the cloth cutting knife 39 is provided. It is extended to reach the position.
発明の効果 本発明は以上のように構成され、次のような効果を奏す
る。EFFECTS OF THE INVENTION The present invention is configured as described above and has the following effects.
請求項1記載の縫製装置によれば、左右の送り歯を差動
送りさせることによって布への回転力が与えられるが、
左側の第二の送り歯は布への作用部を小さくしたことに
より、差動送りにより曲線部を縫うときの小回りが利く
ようになるうえ、右側の第一の送り歯の布への作用部よ
り後方に設けたことにより、曲線部を縫うときの針落ち
後方への布送りが円滑かつ確実に行えるようになり、布
縁が捩れたり、延びたりするのを防ぐことができる。According to the sewing device of claim 1, the rotational force is applied to the cloth by differentially feeding the left and right feed dogs.
The second feed dog on the left side has a smaller acting part on the cloth, which makes it possible to make a small turn when sewing a curved portion by differential feed, and the acting part on the cloth of the first feed dog on the right side. By providing it further rearward, it is possible to smoothly and reliably feed the cloth to the rear of the needle drop when sewing the curved portion, and it is possible to prevent the cloth edge from being twisted or extended.
請求項2記載の縫製装置によれば、曲線部や直線部の縫
いに応じて補助押えを押下げるバネの強さを変えること
が可能であり、直線縫い時には補助押えを布上面に軽く
押付けることによって方向安定性が増し、真直ぐ縫える
ようになる。According to the sewing device of the second aspect, it is possible to change the strength of the spring that presses down the auxiliary presser according to the sewing of the curved portion or the straight portion, and the auxiliary presser is lightly pressed on the upper surface of the cloth during the straight stitching. This increases directional stability and allows straight stitching.
請求項3記載のスペーサ及び布ガイドを用いると、イン
カーブを縫うような場合でも布縁が押え金右側面からま
くれ上がって布切断用のメスで切り落されるといった問
題を解消することができる。請求項4記載の縫製装置に
よれば、バネの強さがエアシリンダにより自動的に変更
され、また昇降手段で補助押えを昇降させるようにした
ことにより、インカーブとアウトカーブ或いは直線縫い
の切換えが容易かつ確実に行えるようになる。By using the spacer and the cloth guide according to the third aspect, it is possible to solve the problem that the cloth edge curls up from the right side surface of the presser foot and is cut off by a cloth cutting knife even when incurving an incurve. According to the sewing device of the fourth aspect, the strength of the spring is automatically changed by the air cylinder, and the auxiliary presser is moved up and down by the elevating means, thereby switching between in-curve and out-curve or straight stitching. It will be easy and reliable.
第1図は本発明に係る縫製装置の斜視図、第2図は縫製
時の要部平面図、第3図は第2図の矢視を断面で表わし
た拡大正面図、第4図は補助押え機構の正面図、第5図
は縫製装置の要部斜視図、第6図は布ガイド及びスペー
サの別の態様を示す要部斜視図、第7図は同平面図であ
る。 1……オーバーロックミシン、3……スライドテーブ
ル、6……スペーサ、7……布ガイド、9……押え金、
13……可動台、14……補助押え、17……支持台、23、24
……バネ、26……調節ナット、28……バネ押え、29、32
……エアシリンダ、30、33……ロッド、31……押え板、
35、36、37……送り歯、39……布切断用のメス、40、41
……センサ、43……当て定規FIG. 1 is a perspective view of a sewing device according to the present invention, FIG. 2 is a plan view of essential parts at the time of sewing, FIG. 3 is an enlarged front view showing a cross section taken along the arrow of FIG. 2, and FIG. FIG. 5 is a front view of the pressing mechanism, FIG. 5 is a perspective view of a main part of the sewing machine, FIG. 6 is a perspective view of a main part showing another aspect of the cloth guide and the spacer, and FIG. 7 is a plan view of the same. 1 ... Overlock sewing machine, 3 ... Slide table, 6 ... Spacer, 7 ... Cloth guide, 9 ... Presser foot,
13 …… Movable stand, 14 …… Auxiliary presser foot, 17 …… Support stand, 23, 24
...... Spring, 26 …… Adjustment nut, 28 …… Spring retainer, 29, 32
...... Air cylinder, 30, 33 ...... Rod, 31 ...... Presser plate,
35, 36, 37 …… Feed teeth, 39 …… Knife for cutting cloth, 40, 41
…… Sensor, 43 …… Scoring ruler
Claims (4)
及び第二の送り歯と、両送り歯に差動送りを与える左右
差動送り機構とを有するオーバーロックミシンと、その
針落ち手前に設けられる布縁案内用のガイドとを備えた
縫製装置において、左側の第二の送り歯の布への作用部
を針落ち手前側に設けられた右側の第一の送り歯の布へ
の作用部より小さくすると共に、第二の送り歯を第一の
送り歯より布送り方向後方にずらしたことを特徴とする
縫製装置。1. An overlock sewing machine having first and second feed dogs arranged in parallel on the right side and left side under a presser foot, and a left and right differential feed mechanism for giving a differential feed to both feed teeth, and the same. In a sewing machine provided with a cloth edge guide provided in front of the needle drop, the action portion of the second feed dog on the left side on the cloth is provided with a first feed dog on the right side provided on the front side of the needle drop. A sewing device characterized in that it is smaller than a portion acting on cloth and that the second feed dog is displaced rearward from the first feed tooth in the cloth feed direction.
のミシンテーブル上に、布端縁を検出して布送り制御信
号を出力するセンサと、布端縁を案内する当て定規と、
プレート状の布ガイド及びその布ガイドをテーブル上に
布厚に応じた高さに保持すると共に、布縁を案内するス
ペーサとを設け、しかも前記押え金左方の針落ち手前に
テーブル上の布面に向かって圧接するように付勢される
補助押えを設けた縫製装置において、前記オーバーロッ
クミシンが前記押え金下に位置を前後にずらして左右に
配置される第一及び第二の送り歯と、前記センサの制御
信号により両送り歯に差動送りを与える左右差動送り機
構とを有し、かつ前記補助押えが傾斜軸で回転自在に軸
支されると共に、常には傾斜軸を下方に付勢して布面に
傾斜軸を中心として回転可能に前記補助押えを圧接する
バネと、そのバネの強さを変更する手段とを備え、前記
センサの制御信号によりバネの強さを変更することによ
り布を針落ちに向かって案内するようにしたことを特徴
とする縫製装置。2. An overlock sewing machine, a sensor for detecting a cloth edge and outputting a cloth feed control signal, and a pad ruler for guiding the cloth edge, on the sewing machine table in front of the presser foot.
The plate-shaped cloth guide and the cloth guide are held on the table at a height according to the cloth thickness, and a spacer for guiding the cloth edge is provided. Moreover, the cloth on the table is placed in front of the needle drop on the left side of the presser foot. In a sewing device provided with an auxiliary presser that is urged to press against a surface, the first and second feed dogs in which the overlock sewing machine is arranged on the left and right by shifting the position under the presser foot back and forth. And a left-right differential feed mechanism that differentially feeds both feed teeth by a control signal of the sensor, and the auxiliary presser is rotatably supported by an inclination shaft, and the inclination shaft is always downward. A spring that presses the auxiliary presser so that it can rotate around the tilt axis on the cloth surface by urging the spring, and a means that changes the strength of the spring, and the strength of the spring is changed by the control signal of the sensor. The cloth for needle drop Sewing machine, characterized in that was to guide me.
部を布切断用のメスに向かって延長させ、押え金右側に
近接させた請求項2記載の縫製装置。3. The sewing device according to claim 2, wherein the pad ruler is omitted, and a part of the cloth guide and the spacer are extended toward a cloth cutting knife so as to be close to the right side of the presser foot.
てのエアシリンダ29を備えると共に、さらに補助押えを
昇降させるための昇降手段32を備える請求項2記載の縫
製装置。4. The sewing device according to claim 2, wherein the auxiliary presser comprises an air cylinder 29 as a means for changing the strength of the spring, and further comprises an elevating means 32 for raising and lowering the auxiliary presser.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63097553A JPH0771593B2 (en) | 1988-04-19 | 1988-04-19 | Sewing equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63097553A JPH0771593B2 (en) | 1988-04-19 | 1988-04-19 | Sewing equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01268590A JPH01268590A (en) | 1989-10-26 |
JPH0771593B2 true JPH0771593B2 (en) | 1995-08-02 |
Family
ID=14195433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63097553A Expired - Fee Related JPH0771593B2 (en) | 1988-04-19 | 1988-04-19 | Sewing equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0771593B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0728970B2 (en) * | 1990-09-10 | 1995-04-05 | ジューキ株式会社 | Sewing machine for cloth on sewing machine |
JPH0468772U (en) * | 1990-10-27 | 1992-06-18 | ||
JP2944029B2 (en) * | 1995-07-20 | 1999-08-30 | 株式会社九州エム・アイ・シイ | Continuous dough press and surging equipment |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4996842A (en) * | 1973-01-23 | 1974-09-13 | ||
JPS6227837A (en) * | 1985-07-30 | 1987-02-05 | Nec Corp | Main memory access system |
JPS6335287A (en) * | 1986-07-30 | 1988-02-15 | ジューキ株式会社 | Differential belt feed apparatus of sewing machine |
-
1988
- 1988-04-19 JP JP63097553A patent/JPH0771593B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH01268590A (en) | 1989-10-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |