JPS598687Y2 - Sewing machine feed rate adjustment device - Google Patents
Sewing machine feed rate adjustment deviceInfo
- Publication number
- JPS598687Y2 JPS598687Y2 JP3068880U JP3068880U JPS598687Y2 JP S598687 Y2 JPS598687 Y2 JP S598687Y2 JP 3068880 U JP3068880 U JP 3068880U JP 3068880 U JP3068880 U JP 3068880U JP S598687 Y2 JPS598687 Y2 JP S598687Y2
- Authority
- JP
- Japan
- Prior art keywords
- cam body
- sewing machine
- feed
- feed rate
- cam
- 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
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- Sewing Machines And Sewing (AREA)
Description
【考案の詳細な説明】
本考案は、略ハート状カム体の凹部一方のカム面に先端
が当接した送り量調節ねじを進退させカム体の位置調節
を行なうことによってミシン送り量の調節を行なうミシ
ン送り量調節装置に関する。[Detailed description of the invention] The present invention adjusts the sewing machine feed amount by moving the feed adjustment screw, whose tip is in contact with the cam surface of one of the recesses of the approximately heart-shaped cam body, back and forth to adjust the position of the cam body. The present invention relates to a sewing machine feed amount adjustment device.
略ハート状カム体を有するミシン送り量調節装置では、
カム体凹部一方のカム面に先端が当接した送り量調節ね
じを進退させカム体の位置調節を行なうことによりミシ
ン送り量の調節が可能であり、更に、それまで送り量調
節ねし先端に当接していた一方のカム体カム面を他方の
カム面に切換え当接することにより、それまで゛の送り
ピッチと同一ピッチの逆送りピッチを得ることができる
。In a sewing machine feed rate adjusting device having a substantially heart-shaped cam body,
Cam body recess The sewing machine feed rate can be adjusted by moving the feed rate adjustment screw, whose tip is in contact with one cam surface, back and forth to adjust the position of the cam body. By switching the cam surface of one cam body that was in contact with the other cam surface and bringing it into contact, a reverse feed pitch that is the same as the previous feed pitch can be obtained.
以下図面に基づいて従来のミシン送り量調節装置を説明
する。A conventional sewing machine feed rate adjusting device will be explained below based on the drawings.
第1図にはミシン送り量調節装置を備えたミシンの概略
図が示されている。FIG. 1 shows a schematic diagram of a sewing machine equipped with a sewing machine feed adjustment device.
図においてミシン機枠がハツチングにて示され、ミシン
機枠に支承された主軸10には送りカム12が固着され
ており、送りカムには二又ロツド14の上部二又部14
aにて把持されている。In the figure, the sewing machine frame is shown by hatching, and a feed cam 12 is fixed to the main shaft 10 supported on the sewing machine frame.
It is gripped at a.
二又ロツド14は二又ロツド揺動支点14bを支点とし
て揺動可能であり、二又ロツド根部14 Cの揺動は腕
16により回動運動に変換されて軸18に伝動され腕2
0により図において送り歯22の前後往復運動に変換さ
れ、送り歯22が布送り作用を行なうことができる。The fork rod 14 can swing about the fork rod swing fulcrum 14b, and the swing of the fork rod root 14C is converted into rotational motion by the arm 16 and transmitted to the shaft 18, and the arm 2
0 converts the feed dog 22 into a back and forth reciprocating motion in the figure, allowing the feed dog 22 to perform a cloth feeding action.
送り歯22の送り量は二又ロツド揺動支点14bの位置
を変位させることによって行なわれ、この位置変位はミ
シン送り量調節装置24にて行なわれる。The feed amount of the feed dog 22 is determined by displacing the position of the forked rod swing fulcrum 14b, and this positional displacement is performed by the sewing machine feed amount adjusting device 24.
第2図には従来のミシン送り量調節装置24が示されて
おり、図においてハツチングの部分はミシン機枠あるい
はアーム機枠を示している。FIG. 2 shows a conventional sewing machine feed rate adjusting device 24, and the hatched portion in the figure indicates a sewing machine frame or an arm machine frame.
ミシン機枠に回動可能に支承された送り調整ねじ26に
は送り量調節つまみ28が固定されており、送り量調節
ねじ26の先端26 aには略ハート状カム体30の凹
部一方のカム面30 aあるいは30 bが当接してい
る。A feed adjustment knob 28 is fixed to a feed adjustment screw 26 rotatably supported on the sewing machine frame, and a cam on one side of the recess of a substantially heart-shaped cam body 30 is attached to the tip 26a of the feed adjustment screw 26. The surfaces 30a or 30b are in contact with each other.
このカム体凹部上側カム面30 aは正送り用カム面で
あり、他方凹部下側の力ム面30 bは逆送り用カム面
である。The upper cam surface 30a of this cam body recess is a cam surface for normal feeding, while the force cam surface 30b on the lower side of the recess is a cam surface for reverse feeding.
カム体30はミシン機枠に支承されたカム体軸32に回
動可能に支承されており、前記送り量調節つまみ28の
回動による送り量調節ねじ26の進退によってカム体軸
32を中心として回動可能である。The cam body 30 is rotatably supported on a cam body shaft 32 supported on the sewing machine frame, and is rotated about the cam body shaft 32 by moving the feed rate adjusting screw 26 forward or backward by rotating the feed rate adjusting knob 28. It is rotatable.
カム体30には腕部30 Cが形威されており、腕部3
0 Cには連結部軸穴30 dが設けられ、また腕部3
0 Cには摺動部30 eが設けられている。The cam body 30 has an arm portion 30C in the form of an arm portion 30C.
0 C is provided with a connecting part shaft hole 30 d, and the arm part 3
A sliding portion 30e is provided at 0C.
この軸穴30 dに軸14dが固着されており(なお、
前記二又ロツド揺動支点14bは軸14dの軸中心であ
る)、軸14dは二又ロツド14の回動軸14eとリン
ク34にてリンク結合されている。A shaft 14d is fixed to this shaft hole 30d (in addition,
The forked rod swing fulcrum 14b is the axial center of the shaft 14d), and the shaft 14d is linked to the rotating shaft 14e of the forked rod 14 by a link 34.
摺動部30 eには角コマ38が嵌遊されており、角コ
マ38は腕40に固定されている。A square piece 38 is loosely fitted into the sliding portion 30e, and the square piece 38 is fixed to the arm 40.
腕40の他端には軸穴40 aが設けられており、軸穴
40 aにはアーム機枠に回動可能に支承された軸42
が挿着されている。A shaft hole 40a is provided at the other end of the arm 40, and a shaft 42 rotatably supported on the arm machine frame is provided in the shaft hole 40a.
is inserted.
アーム機枠と腕40とにばばね44が係止されており、
ばね44は図において腕40に反時計方向に付勢力を与
えている。A spring 44 is locked to the arm machine frame and the arm 40,
The spring 44 applies a biasing force to the arm 40 in a counterclockwise direction in the figure.
軸42は一方で逆送りレバー46に挿着固定されており
、逆送りレバーはばね44により常に図において上方に
付勢されている。On the one hand, the shaft 42 is inserted and fixed to a reverse feed lever 46, which is always urged upward in the figure by a spring 44.
ばね44の付勢力により、カム体30の正送り用カム面
30 aに送り調節ねじ26の先端26 aが通常は当
接しているが、逆送りレバー46が図中下方にばね44
の付勢力に逆って押し下げられると、カム体30の逆送
り用カム面30 bに送り調節ねじ26の先端26 a
が当接する。Due to the biasing force of the spring 44, the tip 26a of the feed adjustment screw 26 normally comes into contact with the normal feed cam surface 30a of the cam body 30, but the reverse feed lever 46 is moved downward in the figure by the spring 44.
When the tip 26a of the feed adjustment screw 26 is pushed down against the urging force of
comes into contact.
第2図従来例は以上の構威から或り、以下その作用を説
明する。The conventional example shown in FIG. 2 has the above structure, and its operation will be explained below.
第2図従来例の布送り作用の説明図が第3図に示されて
おり、第3図においては第1図、第2図と同一部材には
同一符号が付されでいる。FIG. 2 is an explanatory diagram of the cloth feeding action of the conventional example. In FIG. 3, the same members as in FIGS. 1 and 2 are given the same reference numerals.
送りピッチの調節は送り量調節つまみ28の回動によっ
て行なわれる。The feed pitch is adjusted by rotating the feed amount adjustment knob 28.
送り量調節つまみ28が回動されると送り量調節ねじ2
6はその先端26 aがカム体30の正送り用カム面3
0 aに当接した状態で進退を行なう。When the feed rate adjustment knob 28 is rotated, the feed rate adjustment screw 2
6 is the tip 26 a of the cam body 30 for normal feeding cam surface 3
0 Move forward and backward while in contact with a.
送り量調節ねじ26の進退により正送り用カム面30
aと送り量調節ねし先端26 aとが当接しながら摺動
移動し、カム体30はカム体軸32を中心として回動す
る。The normal feed cam surface 30 is adjusted by advancing and retracting the feed amount adjustment screw 26.
a and the feed amount adjusting screw tip 26 a slide while in contact with each other, and the cam body 30 rotates around the cam body shaft 32 .
カム体30の回動により二又ロツド揺動支点14bの位
置が変位し、前述したように送り量(あるいは送りピッ
チ)が変化する。The rotation of the cam body 30 displaces the position of the forked rod swing fulcrum 14b, and the feed amount (or feed pitch) changes as described above.
以上のようにして、送り量調節ねじ26の進退によりカ
ム体30の回動を行なうことにより二又ロツド揺動支点
14 bの位置を変位させて送り量(送りピッチ)を変
化させることができる。As described above, by rotating the cam body 30 by moving the feed amount adjusting screw 26 back and forth, the position of the forked rod swing fulcrum 14b can be displaced and the feed amount (feed pitch) can be changed. .
次に返し縫いを行なうには逆送りレバー46をばね44
に抗して下に引き下げることによって行なわれる。Next, to perform reverse stitching, press the reverse feed lever 46 with the spring 44.
This is done by pulling down against the
逆送りレバー46を下に引き下げるとカム体30はカム
体軸32を中心として時計方向に回動され、逆送り用カ
ム面30 bには送り調節ねし先端26 aが当接して
、この状態で送り歯22の逆送りが行なわれる。When the reverse feed lever 46 is pulled down, the cam body 30 is rotated clockwise around the cam body shaft 32, and the forward end 26a of the feed adjustment screw comes into contact with the reverse feed cam surface 30b to maintain this state. The feed dog 22 is reversely fed.
以上説明した第2図従来例は、カム体凹部の斜面すなわ
ち両カム面30a,30bの精度向上が難しいことから
、被縫製物の縫目ピッチを精密に微調節することができ
ないという欠点を有していた。The conventional example shown in FIG. 2 described above has the disadvantage that it is difficult to improve the precision of the slopes of the cam body recess, that is, the two cam surfaces 30a and 30b, and therefore it is not possible to precisely finely adjust the stitch pitch of the workpiece. Was.
更に返し縫いを行なう場合にあっては、縫製すべき布の
種類や厚さあるいは布押え圧力等の種々の縫製条件によ
り正送りピッチと逆送りピッチとに誤差が生じるという
欠点を有していた。Furthermore, when reverse stitching is performed, there is a drawback that an error occurs between the normal feed pitch and the reverse feed pitch depending on various sewing conditions such as the type and thickness of the fabric to be sewn or the pressure of the presser foot.
そして第2図従来例により均一で正確な縫目を得るため
には送り量調節つまみを長時間費して回動調節せねばな
らないので、縫製作業に長時間を要していた。In addition, in order to obtain uniform and accurate stitches as shown in the conventional example shown in FIG. 2, it is necessary to spend a long time adjusting the rotation of the feed amount adjusting knob, which requires a long time for the sewing operation.
本考案は上記従来の課題に鑑み為されたものであり、そ
の目的は、縫目ピッチの微調節が迅速・簡易に行なうこ
とができ、かつ正逆送りピッチを等しくなるように調節
することができるミシン送り量調節装置を提供すること
にある。The present invention was devised in view of the above-mentioned conventional problems, and its purpose is to make it possible to quickly and easily finely adjust the stitch pitch, and to adjust the forward and reverse feed pitches so that they are equal. The purpose of the present invention is to provide a sewing machine feed amount adjustment device that can be used.
上記目的を達戊するために、本考案は、ミシン機枠に支
承された略ハート状のカム体と、前記カム体の略ハート
状凹部一方の斜面から或るカム面に先端が当接しミシン
機枠に支承された送り量調節ねじとを有し、前記・送り
量調節ねじの回動によりミシン送り量の調節を行なうミ
シン送り量調節装置において、前記カム体の支持機構は
、カム体を回動可能に支持するカム体軸と、カム体軸中
心に対し偏心内穴を有しこの偏心内穴にカム体軸が回動
自在に嵌入されミシン機枠に回動可能に支承された偏心
プッシュとを有し、偏心プッシュの回動によりカム体を
偏位させてミシン送り量の調節を行なうことを特徴とす
る。In order to achieve the above object, the present invention includes a substantially heart-shaped cam body supported on a sewing machine frame, and a substantially heart-shaped concave portion of the cam body whose tip abuts against a certain cam surface from one slope of the substantially heart-shaped recess of the cam body. In the sewing machine feed rate adjusting device, which has a feed rate adjusting screw supported on the machine frame and adjusts the sewing machine feed rate by rotating the feed rate adjusting screw, the support mechanism for the cam body supports the cam body. The eccentric has a cam body shaft that is rotatably supported, and an eccentric inner hole with respect to the center of the cam body shaft, and the cam body shaft is rotatably fitted into the eccentric inner hole and rotatably supported on the sewing machine frame. The sewing machine has a push and is characterized in that the cam body is deflected by the rotation of the eccentric push to adjust the feed amount of the sewing machine.
以下図面に基づいて本考案の好適な実施例を説明する。Preferred embodiments of the present invention will be described below based on the drawings.
第4図には、本考案の好適な実施例が示されており、第
2図と同一部材には同一符号を付して説明を省略する。FIG. 4 shows a preferred embodiment of the present invention, and the same members as those in FIG. 2 are given the same reference numerals and their explanations will be omitted.
カム体軸32はカム体軸32の軸中心100に対して偏
心した内穴48 aを有する偏心プッシュ48の偏心内
穴48 aに回動自在に挿嵌されている。The cam shaft 32 is rotatably inserted into an eccentric inner hole 48 a of an eccentric pusher 48 having an inner hole 48 a eccentric with respect to the shaft center 100 of the cam shaft 32 .
偏心プッシュ48には微調節レバー50が嵌着されてお
り、微調節レバー50はアーム機枠(図示せず)に開け
られたねし穴に挿入された止めねじ34により所定位置
に固定されている。A fine adjustment lever 50 is fitted into the eccentric push 48, and the fine adjustment lever 50 is fixed in a predetermined position by a set screw 34 inserted into a threaded hole drilled in the arm machine frame (not shown). .
そして偏心プッシュ48はミシン機枠に回動可能に支承
されている。The eccentric pusher 48 is rotatably supported on the sewing machine frame.
本考案の目的であるミシン送り量の微調節は、微調節レ
バー50の回動により偏心プッシュ48を回動させ、第
5図に示すようにカム体軸中心100を100′に偏位
させることによって行なわれる。Fine adjustment of the sewing machine feed amount, which is the purpose of the present invention, is achieved by rotating the eccentric pusher 48 by rotating the fine adjustment lever 50, and thereby deviating the cam body axis center 100 to 100' as shown in FIG. It is carried out by
このようなミシン送り量の微調整は以下の様にして行な
われる。Such fine adjustment of the sewing machine feed amount is performed as follows.
微調節レバー50の回動により偏心プッシュ48をカム
体軸中心100が送り調節ねじ26の軸上にある状態、
すなわち中立状態となるように予め設定する。Rotation of the fine adjustment lever 50 causes the eccentric push 48 to be adjusted so that the cam body axis center 100 is on the axis of the feed adjustment screw 26;
That is, it is set in advance to be in a neutral state.
次に送り調節ねじ26の先端26 aがカム体凹部上側
カム面30 aに当接されて主軸10が回転すると、二
又ロツド14は二又ロツド揺動支点14bを支点として
揺動する。Next, when the tip 26a of the feed adjustment screw 26 comes into contact with the upper cam surface 30a of the cam body recess and the main shaft 10 rotates, the fork rod 14 swings about the fork rod swing fulcrum 14b.
このとき、逆送りレバー46を引き下げると送り調節ね
じ15の先端がカム体凹部下側カム面30 bに当接さ
れ、これによって逆送りが正送りと同一の送り量で行な
われる。At this time, when the reverse feed lever 46 is pulled down, the tip of the feed adjustment screw 15 comes into contact with the lower cam surface 30b of the cam body recess, thereby performing reverse feed with the same amount of feed as the normal feed.
しかしながら、カム体30の凹部カム面30a,30
bの加工寸法誤差や縫製物材料等の縫製条件によって、
正送りピッチと逆送りピッチとは同一とはならず、若干
の誤差が生ずる。However, the concave cam surfaces 30a, 30 of the cam body 30
Depending on the sewing conditions such as machining dimensional error of b and sewing material,
The forward feed pitch and the reverse feed pitch are not the same, and some errors occur.
そこで、この誤差を修正するために、微調節レバー50
を回動させ、偏心プッシュ48を回動させてカム体軸中
心100を新たなカム体軸中心100′に偏位させる。Therefore, in order to correct this error, the fine adjustment lever 50
is rotated, and the eccentric push 48 is rotated to deviate the cam body axis center 100 to a new cam body axis center 100'.
このカム体軸中心100′への偏位によりカム体30の
凹部カム面30 aあるいは30 bに当接した送り調
節ねじ26の先端26 aの当接位置が変化するととも
に二又ロツド揺動支点14bも14b′に偏位する。Due to this deviation toward the cam body axis center 100', the contact position of the tip 26a of the feed adjustment screw 26 that is in contact with the recessed cam surface 30a or 30b of the cam body 30 changes, and the forked rod swing fulcrum changes. 14b is also deflected to 14b'.
このように二又ロツド揺動支点14bが偏位した結果、
腕部16及び20の作動範囲が変化し、送り歯22の往
復運動範囲が調節される。As a result of the deviation of the forked rod swing fulcrum 14b in this way,
The operating range of the arms 16 and 20 changes, and the reciprocating range of the feed dog 22 is adjusted.
なお、この二又ロツド揺動支点14 bの揺動が反時計
方向に移動した場合には正送り量が大となり逆送り量が
小となり、時計方向に移動した場合にはこの逆となる。Note that when the bifurcated rod swing fulcrum 14b moves counterclockwise, the forward feed amount becomes large and the reverse feed amount becomes small, and when it moves clockwise, the opposite occurs.
以上説明したように、本考案は、カム体軸32の軸中心
100を偏心プッシュ48の回動により偏位させること
により送り量を微調節でき、かつ正送り量と逆送り量と
を等しくすることができるという利点を有している。As explained above, in the present invention, the feed amount can be finely adjusted by deflecting the axis center 100 of the cam body shaft 32 by the rotation of the eccentric pusher 48, and the forward feed amount and the reverse feed amount can be made equal. It has the advantage of being able to
この結果、常に正逆送り量が等しくかつ正逆縫目ピッチ
が均一な縫製が可能となるので、美しい縫目で商品価値
の高い縫製物が得られ、更に縫目ピッチを被縫製物材料
等の縫製条件の変化あるいは正逆送り切換により生ずる
送りピッチの変化に応じて迅速かつ容易に調節できる利
点がある。As a result, it is possible to always sew with the same forward and reverse feed amounts and a uniform forward and reverse stitch pitch, making it possible to obtain sewn products with beautiful seams and high commercial value. It has the advantage that it can be quickly and easily adjusted in response to changes in sewing conditions or changes in the feed pitch caused by switching between forward and reverse feed.
第1図は従来のミシン送り量調節装置を備えたミシンの
概略図、第2図は従来のミシン送り量調節装置を示す概
略図、第3図は第2図従来例の作用説明図、第4図は本
発明の好適な実施例を示す概略図、第5図は第4図実施
例の作用説明図である。
各図中同一部材には同一符号を付し、14bは二又ロツ
ド揺動支点、26は送り量調節ねし、26aは送り量調
節ねし先端、28は送り量調節つまみ、30は略ハート
状カム体、30 aは正送り用カム面、30bは逆送り
用カム面、32はカム体軸、100はカム体軸中心、4
6は逆送りレバー、48は偏心プッシュ、48aは偏心
穴、50は微調節レバーである。Fig. 1 is a schematic diagram of a sewing machine equipped with a conventional sewing machine feed amount adjustment device, Fig. 2 is a schematic diagram showing a conventional sewing machine feed amount adjustment device, and Fig. 3 is a diagram illustrating the operation of the conventional example in Fig. 2. FIG. 4 is a schematic view showing a preferred embodiment of the present invention, and FIG. 5 is an explanatory diagram of the operation of the embodiment shown in FIG. In each figure, the same members are given the same reference numerals, 14b is the bifurcated rod swing fulcrum, 26 is the feed rate adjustment screw, 26a is the tip of the feed rate adjustment screw, 28 is the feed rate adjustment knob, and 30 is approximately the heart. 30a is a cam surface for normal feeding, 30b is a cam surface for reverse feeding, 32 is a cam body axis, 100 is a center of the cam body axis, 4
6 is a reverse feed lever, 48 is an eccentric push, 48a is an eccentric hole, and 50 is a fine adjustment lever.
Claims (1)
ム体の略ハート状凹部一方の斜面から或るカム面に先端
が当接しミシン機枠に支承された送り量調節ねじと、を
有し、前記送り量調節ねじの回動によりミシン送り量の
調節を行なうミシン送り量調節装置において、前記カム
体の支持機構は、カム体を回動可能に支承するカム体軸
と、カム体軸中心に対し偏心した偏心内穴を有しこの偏
心内穴にカム体軸が回動自在に嵌入されミシン機枠に回
動可能に支承された偏心プッシュと、を有し、偏心プッ
シュの回動によりカム体を偏位させてミシン送り量の調
節を行なうことを特徴とするミシン送り量調節装置。a substantially heart-shaped cam body supported by the sewing machine; and a feed rate adjusting screw supported by the sewing machine frame, the tip of which contacts a certain cam surface from one slope of the substantially heart-shaped recess of the cam body. In the sewing machine feed rate adjusting device, which adjusts the sewing machine feed rate by rotating the feed rate adjusting screw, the support mechanism for the cam body includes a cam body shaft that rotatably supports the cam body, and a cam body shaft that rotatably supports the cam body; The cam body shaft is rotatably fitted into the eccentric inner hole and is rotatably supported on the sewing machine frame. 1. A sewing machine feed amount adjusting device, which adjusts the sewing machine feed amount by deflecting a cam body by motion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3068880U JPS598687Y2 (en) | 1980-03-10 | 1980-03-10 | Sewing machine feed rate adjustment device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3068880U JPS598687Y2 (en) | 1980-03-10 | 1980-03-10 | Sewing machine feed rate adjustment device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56136666U JPS56136666U (en) | 1981-10-16 |
JPS598687Y2 true JPS598687Y2 (en) | 1984-03-17 |
Family
ID=29626582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3068880U Expired JPS598687Y2 (en) | 1980-03-10 | 1980-03-10 | Sewing machine feed rate adjustment device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS598687Y2 (en) |
-
1980
- 1980-03-10 JP JP3068880U patent/JPS598687Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS56136666U (en) | 1981-10-16 |
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