JPS62211093A - Differential feed mechanism of cylinder sewing machine - Google Patents
Differential feed mechanism of cylinder sewing machineInfo
- Publication number
- JPS62211093A JPS62211093A JP5582286A JP5582286A JPS62211093A JP S62211093 A JPS62211093 A JP S62211093A JP 5582286 A JP5582286 A JP 5582286A JP 5582286 A JP5582286 A JP 5582286A JP S62211093 A JPS62211093 A JP S62211093A
- Authority
- JP
- Japan
- Prior art keywords
- differential
- sewing machine
- feed
- differential feed
- pin
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims description 58
- 238000009958 sewing Methods 0.000 title claims description 31
- 241000282472 Canis lupus familiaris Species 0.000 description 25
- 239000004744 fabric Substances 0.000 description 3
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
この発明はミシンの差動送り機構に関し、ことに小径の
シリンダーベッド内に装備することができる構造のコン
パクトなシリンダーミシンにおける差動送り機構に関す
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a differential feed mechanism for a sewing machine, and more particularly to a differential feed mechanism for a compact cylinder sewing machine that can be installed in a small-diameter cylinder bed.
従来技術
ミシンの差動送り機構として知られるものに特公昭４４
−８７１４号に代表されるタイプのものがある。この機
構は主送り歯を取着した主送り台と差動送り歯を取着し
た差動送り台とが、各一端においてそれぞれ機枠に回動
可能に軸支される角駒を摺動可能に嵌合するとともに中
間部に主軸に外嵌の偏心輪に回動可能に外嵌する角駒を
摺動可能に嵌合し、しかも主軸に連動して揺動する揺動
軸に固着の主送り台用アームと差動送り台用アームにそ
れぞれリンク機構を介して連結され、主軸の回転により
一端の角駒を支点として上下に揺動すると−もに揺動軸
の揺動により前後に往復動するようになっており、これ
により各送り歯が前後動並びに上下動よりなる四運動を
行うが、各送り台が一端の角駒を支点として上下にｔ１
動するため送り歯も傾斜して針板上面に用役する。か−
る傾斜によって生ずる主送り歯と差動送り歯の送り歯上
面の段差は、各送り台一端を支持する角駒が縫製部より
かなり離れている場合には少なくなり、縫製に左程大き
な影響を与えないが、小径のシリンダーベッド内のよう
に、上記角駒を縫製部近くに設けねばならない場合には
比較的大きくなり縫製に影響を与えるようになる。A patent was issued in 1977 to what is known as a differential feed mechanism for conventional sewing machines.
There is a type represented by No.-8714. In this mechanism, the main feed base with the main feed dog attached and the differential feed base with the differential feed dog attached can slide square pieces that are rotatably supported on the machine frame at each end. At the same time, a square piece that is rotatably fitted onto the eccentric ring fitted onto the main shaft is slidably fitted in the middle part, and a main piece fixed to the swing shaft that swings in conjunction with the main shaft is fitted in the middle part. The arm for the feed table and the arm for the differential feed table are each connected via a link mechanism, and when the main shaft rotates, the square piece at one end is used as a fulcrum and swings up and down - both reciprocate back and forth by the swing of the swing shaft As a result, each feed dog performs four movements consisting of back-and-forth movement and up-and-down movement, but each feed bar moves up and down at t1 with the square piece at one end as a fulcrum.
Because of this movement, the feed dog is also inclined and serves the upper surface of the throat plate. Or?
The difference in level between the top surfaces of the main feed dog and differential feed dog caused by the inclination will be reduced if the square piece supporting one end of each feed bar is far away from the sewing area, and the difference in level between the upper surfaces of the main feed dog and the differential feed dog will be reduced. However, if the square piece has to be provided near the sewing section, such as in a small-diameter cylinder bed, it becomes relatively large and affects the sewing.
上記の問題は実公昭４８−２３０３号に示されるように
、送り台の両端を同時に上下動させて送り歯上面を常に
水平に保ちながら所定の送り運動をさせる機構を採用す
ることにより解消することができ、送り効率を向上させ
ることができるが、この機構による場合も前記した機構
と同様、主送り台と差動送り台の両送り台に各々異なっ
た前後動をさせて差動送りをさせるために主軸に連動し
て揺動する揺動軸に主送り用アームと差動送り用アーム
を固着して両送り台とそれぞれリンク機構によって連結
しており、こうした主送り用アームや差動送り用アーム
をシリンダーベッド内の限られたスペース内に設けるの
は難しく、したがって実公昭４８−２３０３号に示され
る上述するような機構を採用するにしてもベッドの内径
を小さくするのには限度があり、子供服のように径の小
さな筒状部を有する被縫製物は縫製することができなか
った。The above problem can be solved by adopting a mechanism that simultaneously moves both ends of the feed bar up and down to maintain the top surface of the feed dog horizontally while performing a predetermined feed movement, as shown in Utility Model Publication No. 48-2303. This mechanism can improve the feed efficiency, but in the same way as the above-mentioned mechanism, both the main feed table and the differential feed table are made to move back and forth differently, resulting in differential feed. Therefore, a main feed arm and a differential feed arm are fixed to a swing shaft that swings in conjunction with the main shaft, and are connected to both feed tables by a link mechanism. It is difficult to install the arm in the limited space within the cylinder bed, and therefore even if the above-mentioned mechanism shown in Japanese Utility Model Publication No. 48-2303 is adopted, there is a limit to reducing the inner diameter of the bed. However, it was not possible to sew items such as children's clothing that have a cylindrical portion with a small diameter.
発明が解決しようとする問題点
この発明は送り台を常に水平に保ちながら上下動させる
送り機構の前後動機構に改良を加えることによって小径
のシリンダーベッド内に収めることができるようにした
シリンダーミシンの差動送り機構を提供することを目的
とする。Problems to be Solved by the Invention This invention provides a cylinder sewing machine that can be housed in a small diameter cylinder bed by improving the forward and backward movement mechanism of the feed mechanism that moves the feed table up and down while keeping it horizontal. The purpose is to provide a differential feed mechanism.
問題点を解決するための手段
本発明によれば、そのため主送り歯を取着した主送り台
と、差動送り歯を取着した差動送り台と、両送り台の各
一端を水平方向に摺動可能に支持し、主軸に連動しｔ上
記各一端を上下動させる第一の上下動機構と、両送り台
の各他端を水平方向に摺動可能に支持し、主軸に連動し
て１工動或いは回転する軸に連結されて上記各他端を各
一端の上下動と同時にかつ同量上下動させる第二の上下
動機構と、主軸に連動して両送り台を前後動させる前後
動機構とを有するシリンダーミシンの差動送り機構にお
いて、上記前後機構は、主軸に連動して揺動するレバー
或いは主軸に連動して案内体に沿って摺動するスライダ
ー等よりなる駆動手段と、機枠に固定或いは回転可能に
軸支される軸、該軸に軸支される角駒或いはレバー等よ
りなる支持手段と、一端を駆動手段に、他端を支持手段
にそれぞれ連結し、駆動手段によって前後に往復運動す
る差動調節台と、主送り台と差動調節台のいづれか一方
及び差動送り台と差動調節台のいづれか一方に設けられ
る案内手段と、他方に設けられ、上記案内手段に上下方
向に摺動可能に係合する主送り台用の第一の係合手段及
び差動送り台用の第二の係合手段と、上記差動調節台の
運動を制御し、主送り台と差動送り台の前後運動量比を
調節する調節手段を有する差動送り機構が提供される。Means for Solving the Problems According to the present invention, the main feed bar to which the main feed dog is attached, the differential feed bar to which the differential feed dog is attached, and one end of each of both feed plates are arranged horizontally. a first vertical movement mechanism that is slidably supported on the main shaft and moves each one end up and down in conjunction with the main shaft; A second vertical movement mechanism is connected to a mechanical or rotating shaft and moves each of the other ends up and down at the same time and by the same amount as the vertical movement of each one end, and a second vertical movement mechanism that moves both feed tables back and forth in conjunction with the main shaft. In the differential feed mechanism of a cylinder sewing machine having a back-and-forth movement mechanism, the back-and-forth mechanism is a drive means consisting of a lever that swings in conjunction with the main shaft or a slider that slides along a guide body in conjunction with the main shaft. , a shaft that is fixed or rotatably supported on the machine frame, a support means consisting of a square piece or a lever supported on the shaft, one end of which is connected to the drive means, and the other end of which is connected to the support means; a differential adjustment table that reciprocates back and forth by a means; a guide means provided on one of the main feed table and the differential adjustment table; and a guide means provided on the other side; a first engagement means for the main feed carriage and a second engagement means for the differential feed carriage, which engage the guide means in a vertically slidable manner, and control the movement of the differential adjustment carriage; A differential feed mechanism is provided having adjustment means for adjusting the longitudinal momentum ratio of the main feed and the differential feed.
ここで第一及び第二の上下動機構は主軸及び該主軸に連
動して揺動或いは回動する軸に固定の偏心輪或いはクラ
ンクからそれぞれ構成され、偏心輪或いはクランクピン
に好ましくは角駒が嵌合される。Here, the first and second vertical movement mechanisms each include a main shaft and an eccentric wheel or a crank fixed to the shaft that swings or rotates in conjunction with the main shaft, and preferably a square piece is attached to the eccentric wheel or crank pin. mated.
差動調節台の往復運動は往復直線運動と上下方向への揺
動を伴う前後動を含むもので、前者の場合には主送り歯
と差動送り歯の布送り量が同じで差動送りが行われず、
後者の場合には両送り歯の布送り量が異なって正或いは
逆の差動送りが行われる。The reciprocating motion of the differential adjustment table includes reciprocating linear motion and back-and-forth motion accompanied by vertical swinging. In the former case, the main feed dog and the differential feed dog have the same cloth feed amount, resulting in differential feed. is not carried out,
In the latter case, the cloth feed amounts of both feed teeth are different, and differential feeding in the forward or reverse direction is performed.
案内手段は長溝、長孔、凸条等からなり、第一及び第二
の係合手段はこれらに摺動可能に嵌合する角駒、凹溝を
備えたスライダー等からなる。案内手段はまた第一及び
第二の係合手段に対し個別に、例えば主送り台と差動送
り台にそれぞれ、若くは差動調節台に一対或いは差動調
節台に一つ、主送り台と差動送り台のいずれか一方に一
つソ゛つ設けてもよいが、好ましくは構造を簡素化する
ため差動調節台に一つ設けられ、第一及び第二の係合手
段がともにその上下に摺動可能に係合するようにされる
。The guide means consists of a long groove, a long hole, a protrusion, etc., and the first and second engaging means consist of a square piece, a slider with a recessed groove, etc. which are slidably fitted into these. The guide means may also be arranged individually for the first and second engagement means, for example, one for the main feed and the differential feed, respectively, or a pair for the differential adjustment, or one for the differential adjustment and for the main feed. Although one may be provided on either one of the differential feed base and the differential feed base, preferably one is provided on the differential adjustment base to simplify the structure, and both the first and second engagement means are provided on the differential adjustment base. They are adapted to be slidably engaged up and down.
調節手段は駆動手段が例えばレバーである場合、その揺
動中心を変えるための機構、例えば円弧溝を備えた固定
金具と、レバー基端に突設され、円弧溝に慴動可能に嵌
合するピンと、該ピンを円弧溝の任意の位置に固定する
締付ネジとからなるか、或いは足踏ベタルの踏込み操作
によって回動するクランクと、該クランクと上記レバー
を連結するリンク機構とからなり、また駆動手段がスラ
イダーである場合、案内体の傾きを変えるための機構、
例えば案内体を固着した調節軸と、該軸に連結され、足
踏ベタルの踏込み操作によって作動するクランクレバー
機構とからなる。When the driving means is, for example, a lever, the adjustment means is a mechanism for changing the center of swing of the lever, for example, a fixing metal fitting having an arcuate groove, and is protruded from the base end of the lever and slidably fits into the arcuate groove. Consisting of a pin and a tightening screw that fixes the pin at an arbitrary position in the arcuate groove, or consisting of a crank that rotates when a foot pedal is depressed, and a link mechanism that connects the crank and the lever, In addition, when the driving means is a slider, a mechanism for changing the inclination of the guide body,
For example, it consists of an adjustment shaft to which a guide is fixed, and a crank lever mechanism that is connected to the shaft and is activated by depressing a foot pedal.
支持手段は上述するように主軸、主軸に連動して揺動或
いは回転する軸、固定軸など既設或いは新設の軸、該軸
に軸支される角駒、支持レバー等よりなるが、このうち
既設の軸に軸支される角駒を使用するのが最も望ましい
。軸を直接使用する場合、高速ミシンではことに軸自体
及び該軸を嵌合する差動調節台の摩耗が激しくなるのに
対し、角駒を使用するとこうした摩耗が少なくなり、ま
た支持レバーを使用する場合と比べてもスペースをとら
ず、しかも質量も小さいため慣性による縫い作業への影
響が少なくなるからである。As mentioned above, the supporting means consists of the main shaft, a shaft that swings or rotates in conjunction with the main shaft, an existing or newly installed shaft such as a fixed shaft, a square piece pivotally supported by the shaft, a support lever, etc. It is most desirable to use a square piece that is pivoted on the shaft of. If the shaft is directly used, high-speed sewing machines will experience severe wear, especially on the shaft itself and the differential adjustment base to which the shaft fits, but when a square piece is used, this wear is reduced, and the support lever is used. This is because it takes up less space and has a smaller mass than when using a sewing machine, which reduces the influence of inertia on sewing work.
作用 次に作用を第７Ａ−Ｃ図に基づいて説明する。action Next, the operation will be explained based on FIGS. 7A-C.
駆動手段１により差動ｌ目節台２が前後に往復直線運動
或いは支持手段３を支点として上下に揺動しながら前後
運動をすると、第一及び第二の係合手段４．５が図示し
ない上下動機構により案内手段６に沿って摺動しながら
これらに連結される図示しない主送り台及び差動送り台
をそれぞれ前後動させる。このとき往復運動する案内手
段６の瞬間中心が下方に位置し、この回りに案内手段６
が回動する時には（第７Ａ図）、上方の係合手段４の前
後運動量が下方の係合手段の前後運動量よりも大きくな
り、逆に案内手段６の瞬間中心が上方に位置するときに
は下方の係合手段の前後運動量の方が上方の係合手段の
それよりも太き（なる（第７Ｃ図）、シたがっていづれ
にしても差動送りが行われる。差動調節台２が第７Ｂ図
に示めすように近似直線運動を行い、案内手段６が平行
運動を行うときには係合−Ｆ段４．５の位置によって前
後運動量に差を生じないため両送り台の前後運動量が同
」となり差動送りは行われない。When the differential lubricator 2 moves back and forth linearly or swings up and down using the support means 3 as a fulcrum by the drive means 1, the first and second engagement means 4.5 (not shown) move. While sliding along the guide means 6 by the vertical movement mechanism, a main feed table and a differential feed table (not shown) connected thereto are moved back and forth, respectively. At this time, the instantaneous center of the guide means 6 that reciprocates is located below, and the guide means 6 moves around this point.
When the guide means 6 rotates (FIG. 7A), the longitudinal motion of the upper engagement means 4 becomes larger than the longitudinal motion of the lower engagement means, and conversely, when the instantaneous center of the guide means 6 is located upward, the lower The longitudinal momentum of the engagement means is greater than that of the upper engagement means (Fig. 7C), so differential feeding is performed in any case. As shown in the figure, when an approximate linear motion is performed and the guide means 6 is in parallel motion, there is no difference in the longitudinal momentum depending on the position of the engagement-F stage 4.5, so the longitudinal momentum of both feed tables is the same. No differential feed is performed.
なお図示するものでは第二の係合手段５は支持手段３と
ピン７を結ぶ線上に設けられていないが、差動比を大き
くとれることから該線上に設定するのが望ましい。In the illustrated embodiment, the second engaging means 5 is not provided on the line connecting the support means 3 and the pin 7, but it is desirable to set it on the line since the differential ratio can be increased.
実施例
主送り歯１１を備えた主送り台１２及び差動送り歯１３
を備え、主送り台に添設の差動送り台１４にはその双方
にそれぞれ各一端の二叉に主軸１５に固着の偏心輪１６
に外嵌する角駒１７が前後方向に摺動可能に嵌合すると
ともに各他端の二叉に主軸１５とリンク機構１８を介し
て連結され、主軸１５に連動してｔ駆動する揺動軸１９
に固着のクランクピン２１に嵌合する角駒２２が上記角
駒１７と同様、前後方向に摺動可能に嵌合しており、主
軸１５の回転により両送り台１２及び１４の両端が同時
に、かつ同量上下動して両送り歯１１及び１３の上面を
常に水平に保ちながら上下動させるようになっている。Main feed bar 12 with main feed dog 11 and differential feed dog 13
The differential feed table 14 attached to the main feed table has eccentric wheels 16 fixed to the main shaft 15 at two prongs at each end thereof.
A square piece 17 fitted onto the outside is slidably fitted in the front-rear direction, and the swing shaft is connected to the main shaft 15 via a link mechanism 18 to the two prongs at the other end, and is driven in conjunction with the main shaft 15. 19
Similar to the square piece 17, the square piece 22 that fits into the crank pin 21 fixed to the is fitted so as to be slidable in the front and rear direction, and by the rotation of the main shaft 15, both ends of both feed tables 12 and 14 are simultaneously moved. Moreover, the feed dogs 11 and 13 are moved up and down by the same amount, and the upper surfaces of both feed teeth 11 and 13 are always kept horizontal while being moved up and down.
主軸１５にはまた、偏心輪１６より突出して伸びるその
延長上に角駒２４を回動可能に取付けているとともに偏
心輪２５を止着し、一端を該偏心輪２５に外嵌したロン
ド２６が他端においてレバー２７に軸２８により軸着さ
れ、主軸１５の回転によりレバー２７を下端のピン２９
を支点として前後にｔａ動させるようになっている。軸
２８にはまた差動調節台３１の一端が軸着され、差動調
節台他端の二叉に上記角駒２４を摺動可能に嵌合してい
る。そしてその中間部に形成される縦溝３２の上下に差
動送り台１４にピン３２にて軸支される角駒３３と、差
動送り台１４の前後方向の長孔３５を通して主送り台１
２に突設されるピン３６に軸支される角駒３７がそれぞ
れ摺動可能に嵌合している。しかして主軸１５に連動す
２レバー２７の揺動により差動調節台３１が主軸１５の
回りに上下に揺動しながら前後に進退する往復運動を行
い、縦溝３２に嵌合する角駒３３．３７を介して主送り
台！２及び差動送り台１４に前後運動を与える。主送り
台１２及び差動送り台１４の前後運動量は前述したよう
に、縦溝３２換言すれば差動調節台２８の運動形態によ
って変化し、差動調節台３１の動きはと７２９の位置に
よって制御卸される。すなわち第１．２図に示す実施例
においてピン２９は、ミシンフレームに固定の固定金具
３９に軸２８を曲率中心として形成される円弧状長孔４
１にＲ１動可能に嵌合し、ネジ４２にて長孔内の所望位
置に調整可能に固定されるようになっているが、これを
例えば第１図に示す長孔４１の左側に位置設定すると第
７八図に示すように、縦溝３２の瞬間中心が下方に位置
し、角駒３３に連結される差動送り台１４の前後運動量
が角駒３７に連結される主送り台１２の前後運動量より
も大きくなって主送り歯１１よりも差動送り歯１３の送
り量が大の正差動送りが行われる。ピン２９を長孔４１
の中央に位置設定すると、第７Ｂ図に示されるように、
縦溝３２が平行移動し、したがって主送り歯及び差動送
り歯の送り量が同一となり、差動送りが行われない。A square piece 24 is rotatably attached to the main shaft 15 on an extension thereof that protrudes from the eccentric ring 16, and a rond 26 is fixedly attached to the eccentric ring 25 and has one end fitted onto the eccentric ring 25. The lever 27 is pivotally attached to the lever 27 at the other end by a shaft 28, and rotation of the main shaft 15 causes the lever 27 to be connected to the pin 29 at the lower end.
It is designed to move back and forth using the fulcrum as a fulcrum. One end of a differential adjustment base 31 is also pivotally attached to the shaft 28, and the square piece 24 is slidably fitted into two prongs at the other end of the differential adjustment base. Then, a square piece 33 is pivotally supported by a pin 32 on the differential feed base 14 above and below a vertical groove 32 formed in the intermediate portion, and the main feed base 1 is passed through a long hole 35 in the longitudinal direction of the differential feed base 14.
Square pieces 37 that are pivotally supported by pins 36 protruding from 2 are slidably fitted into each other. As a result of the swinging of the two levers 27 linked to the main shaft 15, the differential adjustment base 31 performs a reciprocating motion of advancing and retreating back and forth while swinging up and down around the main shaft 15, and the square piece 33 that fits into the vertical groove 32 Main feed bar via .37! 2 and the differential feed base 14 to give back and forth motion. As mentioned above, the amount of longitudinal movement of the main feed base 12 and the differential feed base 14 changes depending on the movement form of the vertical groove 32, in other words, the differential adjustment base 28, and the movement of the differential adjustment base 31 depends on the position of the and 729. Controlled wholesale. That is, in the embodiment shown in FIG. 1.2, the pin 29 is an arcuate long hole 4 formed in a fixture 39 fixed to the sewing machine frame with the shaft 28 as the center of curvature.
1 so that R1 can move, and is adjustable and fixed at a desired position within the elongated hole with a screw 42. For example, it can be positioned on the left side of the elongated hole 41 shown in FIG. Then, as shown in FIG. 78, the instantaneous center of the vertical groove 32 is located downward, and the longitudinal momentum of the differential feed base 14 connected to the square piece 33 is increased by the amount of movement of the main feed base 12 connected to the square piece 37. Positive differential feeding is performed in which the amount of feed of the differential feed teeth 13 is greater than the amount of longitudinal movement and the amount of feed of the differential feed teeth 13 is larger than that of the main feed teeth 11. Pin 29 into long hole 41
As shown in Figure 7B,
The vertical groove 32 moves in parallel, so the feed amounts of the main feed dog and the differential feed dog become the same, and no differential feed is performed.
またピン２９を長孔４１の右側に位置設定すると、第７
０図に示されるように、縦溝３２の瞬間中心が上方に位
置し、差動送り台１４の前後運動量が主送り台１２のそ
れよりも小さくなって逆差動送りが行われる。ピン２９
は以上述べたように、その位置によって送りの形態、す
なわち正差動送り或いは逆差動送りの選択更には差動送
り鼠が変化するが、それを表示できるようにするために
長孔周縁には目盛を付しておくのが望ましい。Also, if the pin 29 is positioned on the right side of the elongated hole 41, the seventh
As shown in FIG. 0, the instantaneous center of the vertical groove 32 is located upward, and the longitudinal motion of the differential feed bar 14 becomes smaller than that of the main feed bar 12, so that reverse differential feed is performed. pin 29
As mentioned above, the feed mode, that is, the selection of positive differential feed or reverse differential feed, and the differential feed change depending on the position, but in order to display this, there is a It is desirable to have a scale attached.
以上述べたピン２９はその調整に際し、ネジ４２を一旦
弛めてから長孔４１に沿って直接操作して動かさねばな
らないが、膝レバー、足踏ペクル、その他の手動操作部
材によって調整することができる。To adjust the pin 29 described above, it is necessary to loosen the screw 42 and then directly operate it along the elongated hole 41, but it can also be adjusted using a knee lever, foot pedal, or other manually operated member. can.
第３図はその一例を示すもので、機枠に軸支され、図示
しない足踏ペタルの踏込み操作によって回動する作動軸
４４（常にはバネ４５によって第３図の反時計方向に回
動すべく付勢されている）にはアーム４６が固着され、
中間部を機枠にピン４７にて軸着し、かつ一端に上記ピ
ン２９を取着したレバー４Ｂが他端において上記アーム
４６とリンク４９によって連結されており、足踏ペタル
の踏込み操作によって作動軸４４を回動させると、リン
ク４９、レバー４８を介してピン２９がピン４７を中心
として回動するようになっている。FIG. 3 shows an example of this. An operating shaft 44 (usually rotated counterclockwise in FIG. 3 by a spring 45) is pivoted on the machine frame and rotates by pressing a foot pedal (not shown). An arm 46 is fixed to the
A lever 4B whose intermediate portion is pivoted to the machine frame by a pin 47 and the pin 29 attached to one end is connected to the arm 46 by a link 49 at the other end, and is activated by pressing a foot pedal. When the shaft 44 is rotated, the pin 29 is rotated about the pin 47 via the link 49 and the lever 48.
第１〜３図に示す実施例においてはまた、主送り歯１１
及び差動送り歯１３の前後運動量を調整できるようにす
るため偏心輪２５の偏心量を実開昭６０−１４３５７１
号に示されるような既知の方法によって調整できるよう
になっている。すなわち偏心輪２５にはフランジ部５０
に切欠き５１が形成され、該切欠き５１に押しボタン操
作によりストッパーピン５２が嵌合係止するようになっ
ており、偏心量の調整は押しボタン５３を押下げてス）
−／パーピン５２を第二の偏心輪の切欠き５１に嵌合係
止したのち主軸１５を所要１日勤させることによって行
われる。In the embodiment shown in FIGS. 1-3, the main feed dog 11
In order to be able to adjust the longitudinal motion of the differential feed dog 13, the eccentricity of the eccentric wheel 25 was changed to
It can be adjusted by known methods such as those shown in the issue. That is, the eccentric wheel 25 has a flange portion 50.
A notch 51 is formed in the notch 51, and a stopper pin 52 is fitted into the notch 51 by pressing a push button.The amount of eccentricity can be adjusted by pressing down the push button 53.
-/This is done by fitting and locking the par pin 52 into the notch 51 of the second eccentric wheel, and then operating the main shaft 15 for a required day.
第４図に示す実施例は第１図に示す実施例において、レ
バー２７の揺動運動を主軸１５より偏心輪２５とロッド
２６よりなるクランクレバー機構を介して行う代りに主
軸１５に連動して揺動する揺動軸５５と、該軸に固着さ
れる二叉レバー５６と、軸２８に軸支され、二叉レバー
上端の二叉に摺動可能に嵌合する角駒５７とからなるス
ライダークランク機構によって行うようにしたものであ
る。The embodiment shown in FIG. 4 differs from the embodiment shown in FIG. A slider consisting of a rocking shaft 55 that swings, a two-pronged lever 56 fixed to the shaft, and a square piece 57 that is pivotally supported on the shaft 28 and slidably fits into the two prongs at the upper end of the two-pronged lever. This is done by a crank mechanism.
第５図に示す実施例は第３図に示す実施例において、差
動調節台３１の−―に突設される軸２８の中間部及び軸
端に角駒６１及び６２をそれぞれ回動可能に軸着し、中
間部の角駒６１を主軸１５に連動して揺動する揺動軸６
３の軸端に固着される二叉レバー６４の二叉部に摺動可
能に嵌合するとともに軸端の角駒６２を作動軸４４に連
動して回動するピン４７の突出端に固着される案内体６
５の案内溝６６に摺動可能に嵌合させ、更に差動調節台
３１の他端を角駒で支持する代りに機枠に軸支される支
持軸６７とリンク６８で連結することによって支持した
ものである。The embodiment shown in FIG. 5 is different from the embodiment shown in FIG. 3 in that square pieces 61 and 62 are rotatably mounted on the intermediate portion and shaft end of the shaft 28 protruding from the differential adjustment base 31. A swing shaft 6 is attached to the shaft and swings the square piece 61 in the middle part in conjunction with the main shaft 15.
It is slidably fitted into the two prongs of a two-pronged lever 64 that is fixed to the shaft end of 3, and the square piece 62 at the shaft end is fixed to the protruding end of a pin 47 that rotates in conjunction with the operating shaft 44. Guide body 6
5, and instead of supporting the other end of the differential adjustment base 31 with a square piece, it is supported by connecting it with a support shaft 67 that is rotatably supported on the machine frame using a link 68. This is what I did.
本実施例による場合、足踏ベタルの踏込み操作により案
内体６５の案内溝６６を水平に調節すると、二叉レバー
６４の揺動により角駒６２が案内溝内を水平に往復動す
る結果、差動調節台３１が平行移動するようになり、主
送り歯１１と差動送り歯１３に送り量の差を生じず差動
送りが行われない、案内体６５が図の時計方向に回動し
、案内溝６６が右下りになると、軸２８が右下りに往復
直線運動を行うため縦溝３２の瞬間中心が下方に位置す
るようになり、したがって縦溝上方に嵌合する角駒３３
及び差動送り台１４の前後運動量が縦溝下方に嵌合する
角駒３７及び主送り台１２の前後運動量よりも大きくな
り、正差動送りが、逆に案内体６５の案内溝を左下りに
すると、差動送り台１４の前後運動量が差動送り台１２
の前後運動量よりも小さくなり逆差動送りが行われる。In the case of this embodiment, when the guide groove 66 of the guide body 65 is adjusted horizontally by pressing the foot pedal, the square piece 62 reciprocates horizontally within the guide groove due to the swinging of the two-pronged lever 64. The dynamic adjustment table 31 begins to move in parallel, and there is no difference in the feed amount between the main feed dog 11 and the differential feed dog 13, and differential feed is not performed.The guide body 65 rotates clockwise in the figure. When the guide groove 66 moves downward to the right, the shaft 28 performs a reciprocating linear movement downward to the right, so that the instantaneous center of the vertical groove 32 is located downward, and therefore the square piece 33 that fits above the vertical groove
The forward and backward motion of the differential feed base 14 becomes larger than the forward and backward motion of the square piece 37 and the main feed base 12 that fit below the vertical groove, and the positive differential feed conversely moves the guide groove of the guide body 65 downward to the left. , the longitudinal motion of the differential feed bar 14 is equal to that of the differential feed bar 12.
becomes smaller than the longitudinal momentum of , and reverse differential feeding is performed.
第６図に示す実施例は第５図に示す実施例において、軸
２８に角駒６１を軸着して揺動軸６３に固着の二叉レバ
ー６４に嵌合してなるスライダークランク機構の代りに
主軸１５の回転運動を第１図に示されるようなりランク
レバー機構、すなわち主軸１５と一体となって回転する
偏心輪２５、ロッド２６を介して軸２８に伝え、該軸２
８を前後動させるようにしたものである。The embodiment shown in FIG. 6 is an alternative to the slider crank mechanism in the embodiment shown in FIG. As shown in FIG. 1, the rotational motion of the main shaft 15 is transmitted to the shaft 28 via the rank lever mechanism, that is, the eccentric wheel 25 and rod 26 that rotate together with the main shaft 15,
8 can be moved back and forth.
発明の効果
本発明は以上のように、主送り台と差動送り台の両端に
それぞれ上下動機構を設けて主送り歯と差動送り歯の両
送り歯上面が常に水平を保って差動送り運動を行うよう
になっており、布送り効率がよくなるとともに両送り歯
上面の傾斜による段差を少なくするために両送り台を長
くする必要がなく、しかも主送り台及び差動送り台の前
後運動量比の調節が上下方向に案内手段を備えた共通の
差動調節台によって行われるため装置全体をコンパクト
にすることができてシリンダーベッドの内径を小さくす
ることができ、被縫物の径の小さな筒状部に対しても差
動送りミシンによる縫製が可能となる。Effects of the Invention As described above, the present invention provides a vertical movement mechanism at both ends of the main feed table and the differential feed table, so that the upper surfaces of both the main feed dog and the differential feed dog always remain horizontal. It is designed to perform a feeding motion, which improves the cloth feeding efficiency and reduces the difference in level due to the slope of the top surface of both feed dogs, so there is no need to make both feed tables long, and moreover, the front and rear of the main feed table and differential feed table are Since the momentum ratio is adjusted by a common differential adjustment table equipped with guide means in the vertical direction, the entire device can be made compact, the inner diameter of the cylinder bed can be reduced, and the diameter of the material to be sewn can be reduced. Even small cylindrical parts can be sewn using a differential feed sewing machine.
第１図は本発明に係るミシンの差動送り機構の斜視図、
第２図は同機構の分解斜視図、第３図は変形態様の斜視
図、第４図は別の実施例の斜視図、第５図は更に別の実
施例の斜視図、第６図は他の実施例の斜視図、第７Ａ−
Ｃ図は本発明の詳細な説明するための線図である。
１２・・主送り台 １４・・差動送り台１５・・主軸
１９・・揺動軸 ２６・・ロッド２７・・レバー
２８・・軸２９・・ピン３１・・差動調節台 ３
２・・縦溝 ３３・・角駒３７、・角駒 ４４・・
作動軸 ５５．６３ ・・揺動軸５６．６４ ・・
二叉レバー ５９・・案内体６６・・案内溝FIG. 1 is a perspective view of a differential feed mechanism of a sewing machine according to the present invention;
Figure 2 is an exploded perspective view of the same mechanism, Figure 3 is a perspective view of a modified version, Figure 4 is a perspective view of another embodiment, Figure 5 is a perspective view of yet another embodiment, and Figure 6 is a perspective view of another embodiment. Perspective view of another embodiment, No. 7A-
Figure C is a diagram for explaining the present invention in detail. 12..Main feed base 14..Differential feed base 15..Main shaft 19..Swing shaft 26..Rod 27..Lever 28..Shaft 29..Pin 31..Differential adjustment base 3
2. Vertical groove 33. Square piece 37. Square piece 44.
Operating axis 55.63 ... Swing axis 56.64 ...
Two-pronged lever 59... Guide body 66... Guide groove
Claims (13)
着した差動送り台と、両送り台の各一端を水平方向に摺
動可能に支持し、主軸に連動して上記各一端を上下動さ
せる第一の上下動機構と、両送り台の各他端を水平方向
に摺動可能に支持し、主軸に連動して揺動或いは回転す
る軸に連結されて上記各他端を各一端の上下動と同時に
かつ同量上下動させる第二の上下動機構と、主軸に連動
して両送り台を前後動させる前後動機構とを有するシリ
ンダーミシンの差動送り機構において、上記前後機構は
、主軸に連動する駆動手段と、支持手段と、一端を駆動
手段に、他端を支持手段にそれぞれ連結し、駆動手段に
よって前後に往復運動する差動調節台と、主送り台と差
動調節台のいづれか一方及び差動送り台と差動調節台の
いづれか一方に設けられる案内手段と、他方に設けられ
、上記案内手段に上下方向に摺動可能に係合する主送り
台用の第一の係合手段及び差動送り台用の第二の係合手
段と、上記差動調節台の運動を制御し、主送り台と差動
送り台の前後運動量比を調節する調節手段を有するシリ
ンダーミシンの差動送り機構(1) The main feed base with the main feed dog attached, the differential feed base with the differential feed dog attached, and one end of each of both feed bases are supported so that they can slide horizontally, and are interlocked with the main shaft. a first vertical movement mechanism for vertically moving each one end of the feed table; A differential feed mechanism for a cylinder sewing machine that has a second vertical movement mechanism that moves each other end up and down simultaneously and by the same amount, and a back and forth movement mechanism that moves both feed tables back and forth in conjunction with the main shaft. In the above, the longitudinal mechanism includes a drive means interlocked with the main shaft, a support means, a differential adjustment table whose one end is connected to the drive means and the other end is connected to the support means, and which reciprocates back and forth by the drive means, and the main shaft. A guide means provided on either one of the feed base and the differential adjustment base and either one of the differential feed base and the differential adjustment base, and a main body provided on the other side and slidably engaged with the guide means in the vertical direction. Controls the movement of the first engagement means for the feed base, the second engagement means for the differential feed base, and the differential adjustment base, and adjusts the longitudinal momentum ratio of the main feed base and the differential feed base. Differential feed mechanism of cylinder sewing machine with adjustment means to
ク機構を介して連結され、主軸に連動して揺動するレバ
ーよりなる特許請求の範囲第１項記載のシリンダーミシ
ンの差動送り機構(2) The differential of the cylinder sewing machine according to claim 1, wherein the drive means comprises a lever that is connected at one end to the adjustment means and at the other end to the main shaft via a link mechanism, and swings in conjunction with the main shaft. feeding mechanism
よりリンク機構を介して調節手段に対し摺動するスライ
ダーである特許請求の範囲第１項記載のシリンダーミシ
ンの差動送り機構(3) The differential feed mechanism of the cylinder sewing machine according to claim 1, wherein the drive means is a slider that is slidably connected to the adjustment means and slides from the main shaft to the adjustment means via a link mechanism.
が調整可能な偏心輪を有する特許請求の範囲第２項又は
３項記載のシリンダーミシンの差動送り機構(4) The differential feed mechanism of the cylinder sewing machine according to claim 2 or 3, wherein the link mechanism rotates together with the main shaft and has an eccentric wheel whose eccentricity can be adjusted.
着の軸に軸支し、他端を差動調節台に軸着したレバーで
ある特許請求の範囲第１項乃至４項記載のシリンダーミ
シンの差動送り機構(5) The supporting means is a lever having one end pivoted on the sewing machine frame or a shaft fixed to the machine frame, and the other end pivoted on a differential adjustment base. Differential feed mechanism of cylinder sewing machine
台に摺動可能に嵌合する角駒である特許請求の範囲第１
項記載のシリンダーミシンの差動送り機構(6) The supporting means is a square piece that is pivotally attached to the machine frame on the shaft of the pivot support and slidably fitted to the differential adjustment base.
Differential feed mechanism of cylinder sewing machine described in section
する特許請求の範囲第１項記載のシリンダーミシンの差
動送り機構(7) A differential feed mechanism for a cylinder sewing machine according to claim 1, wherein the first and second engaging means engage with a common guide means.
係合手段は長溝乃至長孔に摺動可能に嵌合するスライダ
ーである特許請求の範囲第７項記載のシリンダーミシン
の差動送り機構(8) The cylinder sewing machine according to claim 7, wherein the guide means is a long groove or a long hole, and the first and second engaging means are sliders that are slidably fitted in the long groove or long hole. Differential feed mechanism
は凸条に摺動可能に嵌合する凹部を備えたスライダーで
ある特許請求の範囲第７項記載のシリンダーミシンの差
動送り機構(9) The cylinder sewing machine according to claim 7, wherein the guide means is a protrusion, and the first and second engaging means are sliders having recesses that are slidably fitted into the protrusion. Differential feed mechanism
バー他端のリンク機構との軸着点を曲率中心とし、上記
軸着点とピンとの軸間距離を曲率半径とする円弧軌跡上
において上記ピンを位置調整可能にする手段とからなる
特許請求の範囲第２項記載のシリンダーミシンの差動送
り機構(10) The adjusting means is arranged on an arcuate locus whose center of curvature is the pivot point between the pin protruding from one end of the lever and the link mechanism at the other end of the lever, and whose radius of curvature is the distance between the axes of the pivot point and the pin. A differential feed mechanism for a cylinder sewing machine according to claim 2, comprising means for making the position of the pin adjustable.
ンが摺動可能に嵌合する円弧状長孔を有し、ミシンフレ
ームに固定される固定金具と、上記ピンを長孔内の所望
位置に固定する締付ネジとからなる特許請求の範囲第１
０項記載のシリンダーミシンの差動送り機構(11) The means for adjusting the position of the pin has an arc-shaped elongated hole into which the pin is slidably fitted, a fixing fitting fixed to the sewing machine frame, and a means for adjusting the position of the pin in the elongated hole. Claim 1 comprising a tightening screw for fixing in position.
Differential feed mechanism of cylinder sewing machine described in item 0
ピンと手動操作部材を連結し、手動操作部材の操作によ
り上記ピンを一固定軸線の回りに回動させるリンク機構
とからなる特許請求の範囲第２項記載のシリンダーミシ
ンの差動送り機構(12) The adjusting means comprises a pin protruding from one end of the lever, and a link mechanism that connects the pin to a manual operating member and rotates the pin around a fixed axis by operating the manual operating member. Differential feed mechanism of cylinder sewing machine described in scope 2
内溝を備え、機枠にピンにて回動可能に軸支される案内
体と、上記ピンと手動操作部材を連結し、手動操作部材
の操作により案内体を回動させ、案内溝の傾きを変える
リンク機構とからなる特許請求の範囲第３項記載のシリ
ンダーミシンの差動送り機構(13) The adjustment means includes a guide groove into which the slider is slidably fitted, and a guide body rotatably supported on the machine frame by a pin, and a manual operation member connected to the pin and the manual operation member. A differential feed mechanism for a cylinder sewing machine according to claim 3, comprising a link mechanism that rotates the guide body and changes the inclination of the guide groove by the operation of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5582286A JPS62211093A (en) | 1986-03-12 | 1986-03-12 | Differential feed mechanism of cylinder sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5582286A JPS62211093A (en) | 1986-03-12 | 1986-03-12 | Differential feed mechanism of cylinder sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62211093A true JPS62211093A (en) | 1987-09-17 |
Family
ID=13009647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5582286A Pending JPS62211093A (en) | 1986-03-12 | 1986-03-12 | Differential feed mechanism of cylinder sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62211093A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09299641A (en) * | 1996-05-15 | 1997-11-25 | Pegasus Sewing Mach Mfg Co Ltd | Cylinder bed sewing machine with differential feed mechanism |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61253095A (en) * | 1985-04-30 | 1986-11-10 | ロツクウエル−リモルデイ・エス・ピ−・エ− | Cloth feeder of sewing machine |
-
1986
- 1986-03-12 JP JP5582286A patent/JPS62211093A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61253095A (en) * | 1985-04-30 | 1986-11-10 | ロツクウエル−リモルデイ・エス・ピ−・エ− | Cloth feeder of sewing machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09299641A (en) * | 1996-05-15 | 1997-11-25 | Pegasus Sewing Mach Mfg Co Ltd | Cylinder bed sewing machine with differential feed mechanism |
| KR100440362B1 (en) * | 1996-05-15 | 2004-12-03 | 페가수스미싱세이죠가부시기가이샤 | Cylinder bed sewing machine having differential feed mechanism |
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