JPS6245659Y2 - - Google Patents
Info
- Publication number
- JPS6245659Y2 JPS6245659Y2 JP14006784U JP14006784U JPS6245659Y2 JP S6245659 Y2 JPS6245659 Y2 JP S6245659Y2 JP 14006784 U JP14006784 U JP 14006784U JP 14006784 U JP14006784 U JP 14006784U JP S6245659 Y2 JPS6245659 Y2 JP S6245659Y2
- Authority
- JP
- Japan
- Prior art keywords
- support member
- feed roller
- work cloth
- feed
- support
- 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
- 239000004744 fabric Substances 0.000 claims description 52
- 238000009958 sewing Methods 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 241000669069 Chrysomphalus aonidum Species 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
この考案は加工布支持面上において針落下点近
傍に加工布を移送するために布押え足及び送り歯
を配設するとともに、針落下点より加工布送り出
し側において加工布上面との接触回転に基づいて
その加工布に送り力を付与する送りローラを備え
たミシンにおける加工布案内装置に関するもので
ある。[Detailed description of the invention] (Industrial application field) This invention provides a work clamp foot and a feed dog in order to transfer the work cloth to the vicinity of the needle drop point on the work cloth support surface. The present invention relates to a workpiece cloth guide device for a sewing machine equipped with a feed roller that applies a feed force to the workpiece cloth based on contact rotation with the upper surface of the workpiece cloth on the workpiece cloth feeding side.
(従来の技術)
従来、この種の装置としては、加工布の形状す
なわち、カーブ部分や段部を備えた加工布に応じ
て外径の異なる複数の送りローラを用意し、その
うちの1個を加工布に応じて選択し、針落下点よ
り布送り出し側に設けた支持部材の下端にその送
りローラを回転可能に取付け、前記送りローラの
回転軸を自在継手を介して駆動源の出力軸に連結
したものがある。そして、駆動源側に設けた送り
量調節ダイヤルを回動操作することにより前記出
力軸の回転速度を変更設定して送りローラの周速
を変更するようになつていた。(Prior Art) Conventionally, this type of device has prepared a plurality of feed rollers with different outer diameters depending on the shape of the work cloth, that is, the work cloth has curved portions or stepped portions, and one of the feed rollers is A feed roller selected according to the fabric to be processed is rotatably attached to the lower end of a support member provided on the fabric feed side from the needle drop point, and the rotating shaft of the feed roller is connected to the output shaft of the drive source via a universal joint. There are things that are connected. By rotating a feed amount adjustment dial provided on the drive source side, the rotational speed of the output shaft is changed and set, thereby changing the circumferential speed of the feed roller.
(考案が解決しようとする問題点)
ところが、上述した従来の装置においては、加
工布に応じて送りローラを交換するたびに周速が
変更されるため、加工布の種類にかかわらず送り
量を一定に設定しておくためには、送りローラを
交換するたびに調節ダイヤルを回動操作して送り
量を調節するという面倒な操作が必要であつた。
さらに、前記送り量調節ダイヤルには使用される
各送りローラに応じて複数の目盛が同心円上に刻
設されているため、目盛合わせの操作が面倒であ
つた。(Problem to be solved by the invention) However, in the conventional device described above, the peripheral speed is changed each time the feed roller is replaced depending on the workpiece cloth, so it is difficult to adjust the feed amount regardless of the type of workpiece cloth. In order to keep the feed amount constant, it was necessary to perform the troublesome operation of rotating an adjustment dial to adjust the feed amount each time the feed roller was replaced.
Furthermore, since a plurality of scales are concentrically carved on the feed amount adjustment dial according to each feed roller used, it is troublesome to adjust the scales.
考案の構成
(問題点を解決するための手段)
上記の問題点を解消するためにこの考案におい
ては、加工布支持面7上において加工布Wを移送
するための布押え足4及び送り歯を針落下点近傍
に配設し、針落下点より加工布送り出し側には支
持部材19を配設し、駆動源に連結された駆動ギ
ア32又は33を前記支持部材19上にて布送り
方向と直交する方向に延びる一軸線の周りで回転
可能に支持し、前記駆動ギア32又は33に噛合
う被動ギア43又は44を前記駆動ギア32又は
33の回転軸線に対し平行に延びかつ所定の距離
を隔てた軸線上において前記支持部材19上に回
転可能に支持し、前記加工布W上面との接触回転
に基づいてその加工布Wに送り力を付与する送り
ローラ41又は42を前記被動ギア43又は44
と同一軸線上において前記支持部材19上に被動
ギア43又は44と一体回転可能に支持し、前記
送りローラ41又は42を前記支持部材19に対
して交換可能に取付けるとともに、その交換に際
しても前記送りローラ41及び42の周速がほぼ
一定となるように前記各ギア32,33,43,
44のギア比を選定している。Structure of the invention (means for solving the problem) In order to solve the above problem, this invention has a presser foot 4 and a feed dog for transporting the work cloth W on the work cloth support surface 7. A support member 19 is disposed near the needle drop point and on the work cloth feed side from the needle drop point, and a drive gear 32 or 33 connected to a drive source is mounted on the support member 19 in the cloth feed direction. A driven gear 43 or 44 that is rotatably supported around one axis extending in an orthogonal direction and that meshes with the drive gear 32 or 33 extends parallel to the rotational axis of the drive gear 32 or 33 and extends a predetermined distance. The driven gear 43 or the feed roller 41 or 42 is rotatably supported on the supporting member 19 on a separate axis and applies a feeding force to the work cloth W based on contact rotation with the upper surface of the work cloth W. 44
The feed roller 41 or 42 is supported on the support member 19 so as to be rotatable integrally with the driven gear 43 or 44 on the same axis as the support member 19, and the feed roller 41 or 42 is attached to the support member 19 so as to be replaceable. Each of the gears 32, 33, 43,
44 gear ratios are selected.
(作用)
上記の構成によりこの考案においては、送りロ
ーラ41を別の送りローラ42に交換しても、そ
の周速がほぼ一定に保たれるため、送り量調節ダ
イヤルを調節する手間を省くことができ、そのた
めその送り量調節ダイヤルには1つの目盛を設け
るだけでよい。(Function) With the above configuration, in this invention, even if the feed roller 41 is replaced with another feed roller 42, its circumferential speed is kept almost constant, thereby eliminating the need to adjust the feed amount adjustment dial. Therefore, only one scale needs to be provided on the feed amount adjustment dial.
(実施例)
以下、この考案を具体化したミシンの一実施例
を図面に従つて説明する。(Example) An example of a sewing machine embodying this invention will be described below with reference to the drawings.
第1図に示すように、ミシンフレーム1のアー
ム部1aには下端に針2を有する針棒3がミシン
主軸に連動して上下動可能に支持され、ミシンフ
レーム1のベツド部1b内に設けられた糸輪捕捉
器(図示しない)との協働により、加工布Wに縫
目を形成するようになつている。又、前記アーム
部1aには下端に布押え足4を有する押え棒5が
上下動可能に支持され、ミシンフレーム1の布送
り出し側側面、すなわち背面に回動可能に支持さ
れた押え上げレバー6の回動操作に基づき、その
布押え足4が前記ベツド部1b上面の加工布支持
面7上に位置する使用位置とその加工布支持面7
から離間する上方の不使用位置との間で上下動さ
れる。この布押え足4と対応して前記ベツド部1
b内には布押え足4との協働により加工布Wを後
方へ移送するための送り歯(図示しない)が設け
られている。 As shown in FIG. 1, a needle bar 3 having a needle 2 at its lower end is supported on an arm portion 1a of a sewing machine frame 1 so as to be movable up and down in conjunction with the main shaft of the sewing machine. A stitch is formed on the work cloth W by cooperation with a thread loop catcher (not shown). Further, a presser foot 5 having a presser foot 4 at its lower end is supported on the arm portion 1a so as to be movable up and down, and a presser foot lifting lever 6 is rotatably supported on the side surface of the sewing machine frame 1 on the cloth feed side, that is, the back surface. Based on the rotational operation of
It is moved up and down between a non-use position and an upper position away from the main body. The bed portion 1 corresponds to this presser foot 4.
A feed dog (not shown) is provided in b for transporting the workpiece cloth W backward in cooperation with the presser foot 4.
第1図〜第3図及び第5図に示すように、アー
ム部1aの背面には中空状をなすとともに、下
面、左右両側面及びアーム部側側面において開口
する第1支持部材8が配設され、そのアーム部側
側面には上下に延びる長孔9aをそれぞれ備えた
3個の取付片9が一体形成されている。そして、
各長孔9aを貫通してアーム部1aに螺着される
ねじ10により前記第1支持部材8がアーム部1
aに上下位置調節可能に取付けられている。 As shown in FIGS. 1 to 3 and 5, a first support member 8 is provided on the back surface of the arm portion 1a, which is hollow and has openings on the lower surface, both left and right side surfaces, and the side surface of the arm portion. Three mounting pieces 9 each having an elongated hole 9a extending vertically are integrally formed on the side surface of the arm portion. and,
The first support member 8 is attached to the arm portion 1 by a screw 10 that passes through each elongated hole 9a and is screwed onto the arm portion 1a.
It is attached to a so that its vertical position can be adjusted.
前記第1支持部材8の上部内面及び下部支持片
8aには断面L字状をなして布送り方向(前後方
向)に延びる摺動面11がそれぞれ形成されると
ともに、前端にて開口し、第1支持部材8aの中
空部に連通する摺動溝8bが形成されている。そ
して、第1支持部材8の中空部内には側面ほぼコ
字状をなす第2支持部材12が前記各摺動面11
に沿つて布送り方向へ摺動可能に支持されてい
る。又、前記第1支持部材8の上部には段差部1
3aを備え、かつ布送り方向に延びる長孔13が
形成されている。そして、その長孔13を貫通し
て前記第2支持部材12の上辺部に螺着される一
対のねじ14により前記第2支持部材12が布送
り方向に沿つて摺動調節された任意の位置に固定
されるようになつている。第2支持部材12の上
面には第1支持部材8の摺動溝8bを貫通して上
方へ突出する筒状部15が形成されるとともに、
第2支持部材12の上下両辺部間には上下に延び
る支軸16が固定されている。 The upper inner surface and lower support piece 8a of the first support member 8 are each formed with a sliding surface 11 having an L-shaped cross section and extending in the cloth feeding direction (back and forth direction). A sliding groove 8b communicating with the hollow portion of the first support member 8a is formed. In the hollow portion of the first support member 8, a second support member 12 having a substantially U-shaped side surface is provided on each of the sliding surfaces 11.
It is supported so as to be slidable in the cloth feeding direction along. Further, a stepped portion 1 is provided on the upper part of the first support member 8.
3a and an elongated hole 13 extending in the cloth feeding direction is formed. Then, the second support member 12 is slidably adjusted to an arbitrary position along the cloth feeding direction by a pair of screws 14 that pass through the elongated hole 13 and are screwed onto the upper side of the second support member 12. It is becoming fixed. A cylindrical portion 15 is formed on the upper surface of the second support member 12 and projects upwardly through the sliding groove 8b of the first support member 8.
A support shaft 16 extending vertically is fixed between the upper and lower sides of the second support member 12 .
前記第2支持部材12の支軸16にはブロツク
状の支持体17と、その支持体17から下部前方
の布押え足4へ向かつて延出する腕部18とを備
えた第3支持部材19が前記支持体17において
上下動可能に及び回動可能に支持されている。 A third support member 19 is provided on the support shaft 16 of the second support member 12, and includes a block-shaped support 17 and an arm portion 18 extending from the support 17 toward the presser foot 4 at the front of the lower part. is supported on the support body 17 so as to be movable up and down and rotatable.
第6図に示すように、前記第1支持部材8の長
孔13の下方において前記支持体17上にはブロ
ツク状の調節体20がその段差付長孔20を貫通
して前記支持体17に螺着される一対のねじ21
により相対位置調節可能に取付けられている。こ
の調節体20に近接して前記第2支持部材12に
は上下に延びる案内孔22が形成されるととも
に、前記調節体20の一側面にはその案内孔22
に係合する係合片23が一体に突出形成されてい
る。又、前記調節体20の上部右側面には前後に
延びる突条20bが形成されている。そして、前
記各ねじ21を緩めた状態においては、第3支持
部材19を支軸16のまわりで回動位置調節する
ことができ、一方、第3支持部材19の支持体1
7に対し、調節体20を所要の調節位置に固定し
た状態においては、係合片23と案内孔22との
係合に基づき、支軸16を中心とする第3支持体
19の回動が規制され、その状態で前記案内孔2
2及び支軸16に沿つて、調節体20及び第3支
持部材19を上下動し得るようになつている。 As shown in FIG. 6, a block-shaped adjustment body 20 is placed on the support body 17 below the long hole 13 of the first support member 8, and is inserted into the support body 17 by passing through the stepped long hole 20. A pair of screws 21 to be screwed
It is mounted so that its relative position can be adjusted. A guide hole 22 extending vertically is formed in the second support member 12 adjacent to the adjustment body 20, and the guide hole 22 is formed on one side of the adjustment body 20.
An engaging piece 23 that engages with is integrally formed to protrude. Further, a protrusion 20b extending back and forth is formed on the upper right side surface of the adjustment body 20. When each of the screws 21 is loosened, the rotational position of the third support member 19 can be adjusted around the support shaft 16, while the support body 1 of the third support member 19
In contrast to 7, when the adjustment body 20 is fixed at a required adjustment position, the third support 19 cannot rotate about the support shaft 16 based on the engagement between the engagement piece 23 and the guide hole 22. regulated, and in that state the guide hole 2
2 and the support shaft 16, the adjustment body 20 and the third support member 19 can be moved up and down.
第1図及び第5〜7図に示すように、前記第3
支持部材19の支持体17及び腕部18には布送
り方向とほぼ直交する方向(左右方向)に延びる
回転軸24,25が軸受24a,25aを介して
それぞれ回転可能に支持され、各回転軸24,2
5の一端に取付けられた歯付きプーリ26,27
の間にはタイミングベルト28が掛装されてい
る。 As shown in FIG. 1 and FIGS. 5 to 7, the third
Rotating shafts 24 and 25 extending in a direction (horizontal direction) substantially orthogonal to the cloth feeding direction are rotatably supported on the support 17 and arm portion 18 of the supporting member 19 via bearings 24a and 25a, respectively. 24,2
Toothed pulleys 26, 27 attached to one end of 5
A timing belt 28 is hung between them.
一方、第4図に示すように、アーム部1aの右
側部後面にはミシンプーリ1cの回転運動を前記
上方の回転軸24に伝達するための周知の駆動伝
達機構Aが設けられ、その駆動伝達機構Aから出
力される間欠回転運動が一対の自在継手30及び
連結軸29を介して上方の回転軸24に伝達され
る。そして、前記間欠回転運動が上方の回転軸2
4、歯付きプーリ26、タイミングベルト28及
び下方の歯付きプーリ27を介して下方の回転軸
24に伝達され、その回転軸24が前述した送り
歯と同期して所定方向へ間欠回転されるようにな
つている。又、前記各歯付きプーリ26,27及
びベルト28はカバー体31によつて覆われてい
る。さらに、前記駆動伝達機構Aの上部には上方
の回転軸24の回転数を変更設定するための1個
の円形目盛を備えた送り量調節ダイアルDが配設
されている。 On the other hand, as shown in FIG. 4, a well-known drive transmission mechanism A for transmitting the rotational movement of the sewing machine pulley 1c to the upper rotating shaft 24 is provided on the rear surface of the right side of the arm portion 1a. The intermittent rotational motion output from A is transmitted to the upper rotating shaft 24 via the pair of universal joints 30 and the connecting shaft 29. Then, the intermittent rotational movement is caused by the upper rotating shaft 2.
4. Transmitted to the lower rotating shaft 24 via the toothed pulley 26, the timing belt 28, and the lower toothed pulley 27, so that the rotating shaft 24 is intermittently rotated in a predetermined direction in synchronization with the aforementioned feed dog. It's getting old. Further, each of the toothed pulleys 26 and 27 and the belt 28 are covered by a cover body 31. Furthermore, a feed rate adjustment dial D is provided at the top of the drive transmission mechanism A and is provided with a single circular scale for changing and setting the rotational speed of the upper rotating shaft 24.
前記下方の回転軸25の左端にはそれぞれ歯数
の異なる第1駆動ギヤ32及び第2駆動ギヤ33
が一対のねじ34により交換可能に取付けられ
る。又、前記腕部18の下端には前記各ギヤ3
2,33に対応して第1ブラケツト35及び第2
ブラケツト36が交換可能に取付けられる。すな
わち、各ブラケツト35,36は断面ほぼL字状
をなす取付部37と二叉状の軸支部38とから構
成されていて、各取付部37において3個のねじ
39により前記腕部18下端に取付けられる。各
ブラケツト35,36の軸支部38には前記回転
軸25に対して所定の距離を隔てて平行に延びる
支軸40が挿通支持されている。各ブラケツト3
5,36の支軸40には外径の異なる第1送りロ
ーラ41及び第2送りローラ42がそれぞれ回転
可能に支持され、各送りローラ41,42の右側
面には前記第1駆動ギヤ32及び第2駆動ギヤ3
3にそれぞれ噛合可能な第1被動ギヤ43及び第
2被動ギヤ44がそれぞれ一体形成されている。 A first drive gear 32 and a second drive gear 33 each having a different number of teeth are disposed at the left end of the lower rotating shaft 25.
is replaceably attached by a pair of screws 34. Further, each of the gears 3 is attached to the lower end of the arm portion 18.
2 and 33, the first bracket 35 and the second bracket
A bracket 36 is replaceably mounted. That is, each of the brackets 35 and 36 is composed of a mounting part 37 having a substantially L-shaped cross section and a bifurcated shaft support 38, and each mounting part 37 is connected to the lower end of the arm part 18 by three screws 39. Installed. A support shaft 40 extending parallel to the rotating shaft 25 at a predetermined distance is inserted through and supported by the shaft support 38 of each bracket 35, 36. Each bracket 3
A first feed roller 41 and a second feed roller 42 having different outer diameters are rotatably supported on the support shafts 40 of 5 and 36, respectively, and the first drive gear 32 and the second feed roller 42 are mounted on the right side of each feed roller 41 and 42, respectively. 2nd drive gear 3
A first driven gear 43 and a second driven gear 44 which can mesh with each other are integrally formed with each other.
そして、第1駆動ギヤ32を回転軸25に取付
けた状態において第1ブラケツト35を第3支持
部材19の腕部18に取付けたときには、回転軸
25の回転運動が第1駆動ギヤ32に噛合う第1
被動ギヤ43を介して第1送りローラ41に伝達
され、その第1送りローラ41が布送り方向へ間
欠回転される。又、前記回転軸25に第2駆動ギ
ヤ33を取付けた状態で第2ブラケツト36が前
記腕部18に取付られた状態においては、回転軸
25の回転運動が前記第2駆動ギヤ33に噛合う
第2被動ギヤ44を介して第2送りローラ42に
伝達される。なお、この実施例においては、各送
りローラ41,42の周速がほぼ一定となるよう
に各ギヤ32,33,43,44のギヤ比(速度
比)が選定されている。又、前記各被動ギヤ4
3,44は各軸支部38近傍に取付けられるカバ
ー45によつて被覆されている。 When the first bracket 35 is attached to the arm portion 18 of the third support member 19 with the first drive gear 32 attached to the rotation shaft 25, the rotational movement of the rotation shaft 25 meshes with the first drive gear 32. 1st
It is transmitted to the first feed roller 41 via the driven gear 43, and the first feed roller 41 is intermittently rotated in the cloth feeding direction. Further, when the second bracket 36 is attached to the arm portion 18 with the second drive gear 33 attached to the rotation shaft 25, the rotational movement of the rotation shaft 25 meshes with the second drive gear 33. It is transmitted to the second feed roller 42 via the second driven gear 44 . In this embodiment, the gear ratio (speed ratio) of each gear 32, 33, 43, 44 is selected so that the peripheral speed of each feed roller 41, 42 is approximately constant. Moreover, each of the driven gears 4
3 and 44 are covered by a cover 45 attached near each shaft support 38.
第5図に示すように第3支持部材19の支持体
17上面には軸受24aに連通し上下に延びる段
付き孔46が形成され、その下部には潤滑油が含
浸されたフエルト47が収容されている。一方、
第2支持部材12の筒状部15にねじ筒48が上
下動可能に螺合され、そのねじ筒48内には押圧
棒49が上下動可能に支持されている。そして、
この押圧棒49の下端が前記段付き孔46の段部
に係合されている。又、この押圧棒49にはばね
50が巻回され、そのばね50により押圧棒49
を介して第3支持部材19が下方へ移動付勢され
ている。そして、前記ねじ筒48の回動操作に基
づきばね50の圧力が変更調節され、所定の調節
位置にてねじ筒48外周のロツクリング51を締
付けることにより、ねじ筒48を所定の調節位置
に固定できるようになつている。 As shown in FIG. 5, a stepped hole 46 communicating with the bearing 24a and extending vertically is formed on the upper surface of the support 17 of the third support member 19, and a felt 47 impregnated with lubricating oil is accommodated in the lower part of the stepped hole 46. ing. on the other hand,
A threaded tube 48 is screwed into the cylindrical portion 15 of the second support member 12 so as to be movable up and down, and a press rod 49 is supported within the screw tube 48 so as to be movable up and down. and,
The lower end of this pressing rod 49 is engaged with the stepped portion of the stepped hole 46 . Further, a spring 50 is wound around this press rod 49, and the spring 50 causes the press rod 49 to
The third support member 19 is urged to move downward. Then, the pressure of the spring 50 is changed and adjusted based on the rotation operation of the threaded barrel 48, and by tightening the lock ring 51 on the outer periphery of the threaded barrel 48 at a predetermined adjustment position, the threaded barrel 48 can be fixed at a predetermined adjustment position. It's becoming like that.
第3図に示すように第1支持部材8の右側面に
は回動レバー52がその中間部にて段付きねじ5
3により回動可能に支持され、その前端に形成さ
れた突起54が第1支持部材8を貫通して前記調
節体20の突条20bの下面に位置している。一
方、第1,2図に示すように、前記第1支持部材
8の後部には左右に延びる支軸55が回動可能に
支持され、その左端(第2図において右端)には
操作レバー56が固着されるとともに、右端(第
2図において左端)には前記回動レバー52の後
端に係合し得るカム片57が取付けられている。
そして、操作レバー56が第1図に示す位置に配
置された状態においては、第3図に示すカム片5
7が回動レバー52の後端から離間し、回動レバ
ー52の前端の下方移動が許容されるため、第5
図に示すばね50の付勢力に基づき第3支持部材
19が下方移動され、その第3支持部材19下端
の第1送りローラ41あるいは第2送りローラ4
2が加工布W上面に圧接される。 As shown in FIG. 3, on the right side of the first support member 8, a rotating lever 52 is provided with a stepped screw 5 at its intermediate portion.
3, and a protrusion 54 formed at the front end thereof passes through the first support member 8 and is located on the lower surface of the protrusion 20b of the adjustment body 20. On the other hand, as shown in FIGS. 1 and 2, a support shaft 55 extending left and right is rotatably supported at the rear of the first support member 8, and an operating lever 56 is attached to the left end (right end in FIG. 2) of the support shaft 55. is fixed thereto, and a cam piece 57 that can engage with the rear end of the rotating lever 52 is attached to the right end (left end in FIG. 2).
When the operating lever 56 is placed in the position shown in FIG. 1, the cam piece 56 shown in FIG.
7 is separated from the rear end of the rotary lever 52, and the front end of the rotary lever 52 is allowed to move downward.
The third support member 19 is moved downward based on the urging force of the spring 50 shown in the figure, and the first feed roller 41 or the second feed roller 4 at the lower end of the third support member 19 is moved downward.
2 is pressed against the upper surface of the work cloth W.
又、前記操作レバー56が第1図の時計方向へ
回動操作されたときにはカム片57が回動レバー
52の後端上面に係合し、それに伴い回動レバー
52の前端が上方へ移動され、突起54と調節体
20の突条20bとの係合を介して第3支持部材
19とともに第1送りローラ41あるいは第2送
りローラ42が上方の不使用位置まで移動され
る。そして、前記カム片57との係合に基づき、
第3支持部材19が上方の不使用位置に配置保持
される。 Further, when the operating lever 56 is rotated clockwise in FIG. 1, the cam piece 57 engages with the upper surface of the rear end of the rotary lever 52, and the front end of the rotary lever 52 is accordingly moved upward. Through the engagement between the protrusion 54 and the protrusion 20b of the adjustment body 20, the first feed roller 41 or the second feed roller 42 is moved together with the third support member 19 to an upper position where it is not used. Based on the engagement with the cam piece 57,
The third support member 19 is arranged and held in an upper unused position.
又、前記押え棒5の下端部近傍には係合片58
が設けられるとともに、第3支持部材19の腕部
18には前記係合片58の上方まで延びる連係片
59が取付けられている。そして、前記押え上げ
レバー6の回動操作に基づき、押え棒5とともに
押え足4が上動されたときには前記係合片58が
連係片59に下方から係合し、第3支持部材19
が上方の不使用位置一体的に移動されるようにな
つている。 Further, an engaging piece 58 is provided near the lower end of the presser bar 5.
A linking piece 59 extending above the engaging piece 58 is attached to the arm portion 18 of the third support member 19 . Then, when the presser foot 4 is moved upward together with the presser foot bar 5 based on the rotational operation of the presser foot lifting lever 6, the engaging piece 58 engages with the linking piece 59 from below, and the third support member 19
are integrally moved to an upper unused position.
次に、上記のように構成されたミシンの作用を
説明する。さて、第1図は第3支持部材19の腕
部18下端に第1ブラケツト35が取付けられる
とともに、第3支持部材19が下方の使用位置に
配置され、第1送りローラ41が加工布支持面7
上の加工布W上面に接触した状態を示すものであ
る。この状態においては、ねじ筒48及びロツク
リング51の回動操作に基づいて予め設定された
ばね50のばね力により前記第1送りローラ41
が加工布W上面に押し付けられている。 Next, the operation of the sewing machine configured as described above will be explained. Now, in FIG. 1, the first bracket 35 is attached to the lower end of the arm portion 18 of the third support member 19, the third support member 19 is placed in the lower use position, and the first feed roller 41 is moved to the work cloth support surface. 7
It shows the state in which it is in contact with the upper surface of the upper work cloth W. In this state, the first feed roller 41 is moved by the spring force of the spring 50 set in advance based on the rotation operation of the threaded cylinder 48 and the lock ring 51.
is pressed against the upper surface of the work cloth W.
この状態でミシンを運転すると、送り歯(図示
しない)に送り運動が付与されるとともに、その
送り歯と同期して動力伝達機構Aからの動力によ
り第1送りローラ41が布送り方向に間欠回転さ
れる。従つて、布押え足4、送り歯及び第1送り
ローラ41の協働により加工布Wを円滑に移送す
ることができる。 When the sewing machine is operated in this state, a feed motion is applied to the feed dog (not shown), and the first feed roller 41 is intermittently rotated in the cloth feeding direction by the power from the power transmission mechanism A in synchronization with the feed dog. be done. Therefore, the workpiece cloth W can be smoothly transferred by the cooperation of the presser foot 4, the feed dog, and the first feed roller 41.
次に、第1図に実線で示す布押え足4を同図に
鎖線で示す布押え足4に交換し、それに伴つて、
布押え足4との干渉をさけるために、第1送りロ
ーラ41の配置位置を調整する操作について説明
する。まず、押え上げレバー6を所定方向へ回動
操作すると、布押え足4が第1図に示す使用位置
から上方の不使用位置まで移動される間に、係合
片58が連係片59の先端部に下方から係合し、
それにより布押え足4とともに第3支持部材19
がばね50の付勢力に抗して第1図に使用位置か
ら上方の不使用位置まで上昇される。従つて、布
押え足4及び第1送りローラ41が加工布Wから
上方へ離間する。 Next, the presser foot 4 shown in solid lines in FIG. 1 is replaced with the presser foot 4 shown in chain lines in the same figure, and along with this,
An operation for adjusting the arrangement position of the first feed roller 41 in order to avoid interference with the presser foot 4 will be described. First, when the presser foot lifting lever 6 is rotated in a predetermined direction, the engaging piece 58 is moved from the tip of the linking piece 59 while the presser foot 4 is moved from the used position shown in FIG. 1 to the upper non-used position. from below,
As a result, the third support member 19 together with the presser foot 4
is raised against the biasing force of the spring 50 from the used position to the upper non-used position as shown in FIG. Therefore, the presser foot 4 and the first feed roller 41 are separated upward from the work cloth W.
この状態で、第1図に実線で示す布押え足4を
同図に鎖線で示す布押え足4に交換した後、第1
支持部材8上の2個のねじ14を緩めて、第3支
持部材19及び第1送りローラ41とともに第2
支持部材12を各摺動面11に沿つて後方へ移動
させ、所要の移動位置で前記各ねじ14を締付け
て第2支持部材12を第1支持部材8に固定す
る。その後、前記押え上げレバー6を往復回動さ
せれば、交換された布押え足4と位置調整された
第2支持部材12上の第1送りローラ41とが一
体的に下方移動され、布押え足4及び第1送りロ
ーラ41が加工布W上面に圧接される。 In this state, after replacing the presser foot 4 shown in solid lines in FIG. 1 with the presser foot 4 shown in chain lines in the same figure,
By loosening the two screws 14 on the support member 8, the second
The support member 12 is moved rearward along each sliding surface 11, and each screw 14 is tightened at a required movement position to fix the second support member 12 to the first support member 8. Thereafter, when the presser foot lifting lever 6 is rotated back and forth, the replaced presser foot 4 and the first feed roller 41 on the second support member 12 whose position has been adjusted are integrally moved downward, and the presser foot The legs 4 and the first feed roller 41 are pressed against the upper surface of the work cloth W.
そして、この場合、第3支持部材19は第2支
持部材12とともに、固定位置にある第1支持部
材8の摺動面11及び摺動溝8bに沿つて後方へ
移動されるだけであるため、その第3支持部材1
9の第1送りローラ41の回転軸線がその移動操
作前後において変更されることはなく、従来例と
は異なり、面倒な微調整を行う必要がない。 In this case, the third support member 19 is simply moved backward along the sliding surface 11 and the sliding groove 8b of the first support member 8 in the fixed position, together with the second support member 12. The third support member 1
The axis of rotation of the first feed roller 41 of No. 9 is not changed before and after its movement operation, and unlike the conventional example, there is no need to perform troublesome fine adjustments.
上記のように小径の第1送りローラ41が装着
されている場合には、その第1送りローラ41を
布押え足4の後部に近接して配置することができ
るので、加工布Wのカーブ部分に沿つて縫目を形
成する場合などに特に有効に作用する。 When the small-diameter first feed roller 41 is installed as described above, the first feed roller 41 can be placed close to the rear part of the presser foot 4, so that the curved portion of the workpiece cloth W can be This is particularly effective when forming a seam along a seam.
一方、段差部を有する加工布Wに縫目を形成す
る場合にはその段差部を乗越えやすくするために
送りローラの径を大きくすることが望ましい。そ
こで、第6図に示す小径の第1送りローラ41を
大径の第2送りローラ42に交換する操作につい
て次に説明する。まず、押え上げレバー6を所定
方向へ回動操作して前述した布押え***換時と同
様に第3支持部材19とともに第1送りローラ4
1を上方の不使用位置に配置する。次に、前記と
同様に、第1支持部材8上の2個のねじ14を緩
めて、第3支持部材19とともに第2支持部材1
2を各摺動面11及び摺動溝8bに沿つて後方へ
移動させ、所要の移動位置で前記各ねじ14を締
付けて第2支持部材12を第1支持部材18に固
定する。 On the other hand, when forming a seam on the work cloth W having a stepped portion, it is desirable to increase the diameter of the feed roller in order to make it easier to get over the stepped portion. Therefore, the operation of replacing the small-diameter first feed roller 41 shown in FIG. 6 with the large-diameter second feed roller 42 will be described next. First, the presser foot lifting lever 6 is rotated in a predetermined direction, and the third support member 19 and the first feed roller 4 are
1 is placed in the upper unused position. Next, in the same manner as above, loosen the two screws 14 on the first support member 8, and remove the second support member 1 along with the third support member 19.
2 is moved rearward along each sliding surface 11 and sliding groove 8b, and each screw 14 is tightened at a required movement position to fix the second support member 12 to the first support member 18.
この状態で、3個のねじ39を緩めて第1ブラ
ケツト35とともに第1送りローラ41を第3支
持部材19から取外し、次に2個のねじ34を緩
めて第1駆動ギヤ32を下方の回転軸25から取
外す。その後、第6図に示す小径の第2駆動ギヤ
33を前記回転軸25に挿通して2個のねじ34
により固定し、引続き、第7図に示す第2ブラケ
ツト36を3個のねじ39により第3支持部材1
9に固定する。この第2ブラケツト36の装着と
同時に、第2被動ギヤ44が第2駆動ギヤ33に
噛合わされる。 In this state, loosen the three screws 39 to remove the first feed roller 41 together with the first bracket 35 from the third support member 19, then loosen the two screws 34 to rotate the first drive gear 32 downward. Remove from shaft 25. Thereafter, the small diameter second drive gear 33 shown in FIG. 6 is inserted into the rotating shaft 25, and the two screws 34 are inserted.
Then, the second bracket 36 shown in FIG.
Fixed at 9. At the same time as the second bracket 36 is attached, the second driven gear 44 is meshed with the second drive gear 33.
次に、前記押え上げレバー6を復帰回動させれ
ば、布押え足4と第3支持部材19とが一体的に
下方移動され、布押え足4及び第2送りローラ4
2が加工布支持面7上の加工布W上面に圧接され
る。この状態でミシンを運転すれば、前記小径の
第1送りローラ41とほぼ同じ周速で第2送りロ
ーラ42が間欠的に回転され、その第2送りロー
ラ42と送り歯及び布押え足4との協働により段
部を備えた加工布Wを円滑に移送することができ
る。 Next, when the presser foot lifting lever 6 is rotated to return, the presser foot 4 and the third support member 19 are integrally moved downward, and the presser foot 4 and the second feed roller 4 are moved downward.
2 is pressed against the upper surface of the work cloth W on the work cloth support surface 7. When the sewing machine is operated in this state, the second feed roller 42 is intermittently rotated at approximately the same circumferential speed as the small-diameter first feed roller 41, and the second feed roller 42, the feed dog, and the presser foot 4 are rotated intermittently. By this cooperation, the work cloth W having the stepped portion can be smoothly transferred.
なお、この実施例においては、操作レバー56
を回動操作することにより、布押え足4とは関係
なく、第3支持部材19上の送りローラ41,4
2を上方の不使用位置に配置することができ、そ
の状態で送りローラ41,42等の交換作業を行
うことができる。 Note that in this embodiment, the operating lever 56
By rotating the feed rollers 41 and 4 on the third support member 19, regardless of the presser foot 4,
2 can be placed in an upper unused position, and the feed rollers 41, 42, etc. can be replaced in this state.
又、この実施例においては、第3支持部材19
を第2支持部材12に対して回動位置調節可能に
支持したので組付け誤差などに起因して送りロー
ラ41の回転軸線が布送り方向と直交していない
場合に、第3支持部材19に対する調節体20の
取付位置を調節することによつて、回転軸線の位
置調節を容易に行うことができる。 Further, in this embodiment, the third support member 19
is supported with respect to the second support member 12 so that its rotational position can be adjusted, so that if the rotation axis of the feed roller 41 is not perpendicular to the cloth feeding direction due to an assembly error or the like, the By adjusting the mounting position of the adjusting body 20, the position of the rotation axis can be easily adjusted.
上記のように、この実施例において、送りロー
ラを交換する際に、その送りローラ41,42の
外径に応じて第3支持部材19とともに第2支持
部材12を布送り方向に延びる摺動面11に沿つ
て前後に移動調節することができるので、ローラ
交換後においてその回転軸線が布送り軸方向と直
交する方向からずれるおそれを未然に防止するこ
とができる。 As described above, in this embodiment, when replacing the feed rollers, depending on the outer diameter of the feed rollers 41 and 42, the third support member 19 and the second support member 12 are moved along the sliding surface extending in the cloth feeding direction. Since it is possible to adjust the movement back and forth along 11, it is possible to prevent the rotational axis from being deviated from the direction perpendicular to the cloth feeding axis direction after the roller is replaced.
さらに、ローラ交換後においても、送りローラ
の周速が変化することはないので、送り量調節ダ
イアルDにより送り量の微調整を行う必要がな
く、そのため送り量調節ダイアルDには各送りロ
ーラに対応して複数の目盛を設ける必要がない。 Furthermore, even after roller replacement, the circumferential speed of the feed roller does not change, so there is no need to make fine adjustments to the feed amount using the feed amount adjustment dial D. There is no need to provide multiple scales correspondingly.
考案の効果
以上詳述したようにこの考案は、各送りローラ
を支持部材に対して交換可能に取付けるととも
に、その交換に際しても前記送りローラの周速が
ほぼ一定となるように各ギヤのギヤ比を選定した
ので、送りローラの交換後において送り量調節ダ
イヤルにより送り量を調節するという面倒な操作
を行う必要がなく、そのために、前記ダイヤルに
送りローラに応じて複数の目盛を設ける必要がな
いという優れた効果を奏する。Effects of the invention As detailed above, this invention attaches each feed roller to the support member so that it can be replaced, and also adjusts the gear ratio of each gear so that the circumferential speed of the feed roller remains approximately constant even when the feed roller is replaced. Since we selected , there is no need to perform the troublesome operation of adjusting the feed amount using the feed amount adjustment dial after replacing the feed roller, and therefore there is no need to provide multiple scales on the dial depending on the feed roller. It has this excellent effect.
第1図はこの考案を具体化したミシンの左側面
図、第2図は背面図、第3図は送りローラの支持
構造を示す正面図、第4図は駆動伝達機構を示す
背面図、第5図は第2図における−線断面
図、第6図は第2図における−線断面図、第
7図は部分分解斜視図である。
図において、7は加工布支持面、19は支持部
材、32,33は駆動ギヤ、41,42は送りロ
ーラ、43,44は被動ギヤ、Wは加工布であ
る。
Figure 1 is a left side view of a sewing machine embodying this invention, Figure 2 is a rear view, Figure 3 is a front view showing the support structure for the feed roller, Figure 4 is a rear view showing the drive transmission mechanism, 5 is a cross-sectional view taken along the line -- in FIG. 2, FIG. 6 is a cross-sectional view taken along the line -- in FIG. 2, and FIG. 7 is a partially exploded perspective view. In the figure, 7 is a work cloth support surface, 19 is a support member, 32 and 33 are drive gears, 41 and 42 are feed rollers, 43 and 44 are driven gears, and W is a work cloth.
Claims (1)
おいて加工布Wを移送するための布押え足4及び
送り歯と、 針落下点より加工布送り出し側に配設された支
持部材19と、 その支持部材19上にて布送り方向と直交する
方向に延びる一軸線の回りで回転可能に支持さ
れ、駆動源に連結された駆動ギア32又は33
と、 その駆動ギア32又は33の回転軸線に対し平
行に延びかつ所定の距離を隔てた軸線上において
前記支持部材19上に回転可能に支持され、前記
駆動ギア32又は33に噛合う被動ギア43又は
44と、 前記被動ギア43又は44と同一軸線上におい
て前記支持部材19上に被動ギア43又は44と
一体回転可能に支持され、前記加工布W上面との
接触回転に基づいてその加工布Wに送り力を付与
する送りローラ41又は42と を備え、前記各送りローラ41又は42を前記支
持部材19に対して交換可能に取付けるととも
に、その交換に際しても前記送りローラ41,4
2の周速がほぼ一定となるように前記各ギア3
2,33,43,44のギア比が選定されるよう
に構成したことを特徴とするミシンにおける加工
布案内装置。[Scope of Claim for Utility Model Registration] A presser foot 4 and a feed dog which are arranged near the needle drop point and are used to transfer the work cloth W on the work cloth support surface 7, and from the needle drop point to the work cloth delivery side. A supporting member 19 is provided, and a driving gear 32 or 33 is rotatably supported on the supporting member 19 to be rotatable around one axis extending in a direction perpendicular to the cloth feeding direction, and is connected to a driving source.
and a driven gear 43 that is rotatably supported on the support member 19 on an axis that extends parallel to the rotation axis of the drive gear 32 or 33 and is separated by a predetermined distance, and meshes with the drive gear 32 or 33. or 44, and is supported on the support member 19 on the same axis as the driven gear 43 or 44 so as to be rotatable together with the driven gear 43 or 44, and the work cloth W is rotated in contact with the upper surface of the work cloth W. Each of the feed rollers 41 and 42 is attached to the support member 19 so as to be replaceable, and when the feed rollers 41 and 4 are replaced, the feed rollers 41 and 4
Each of the gears 3
1. A work cloth guide device for a sewing machine, characterized in that the gear ratios are selected from 2, 33, 43, and 44.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14006784U JPS6245659Y2 (en) | 1984-09-14 | 1984-09-14 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14006784U JPS6245659Y2 (en) | 1984-09-14 | 1984-09-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6154772U JPS6154772U (en) | 1986-04-12 |
JPS6245659Y2 true JPS6245659Y2 (en) | 1987-12-07 |
Family
ID=30698426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14006784U Expired JPS6245659Y2 (en) | 1984-09-14 | 1984-09-14 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6245659Y2 (en) |
-
1984
- 1984-09-14 JP JP14006784U patent/JPS6245659Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6154772U (en) | 1986-04-12 |
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