JPS61268291A - Drive apparatus of cloth feed roller driving shaft - Google Patents
Drive apparatus of cloth feed roller driving shaftInfo
- Publication number
- JPS61268291A JPS61268291A JP11248785A JP11248785A JPS61268291A JP S61268291 A JPS61268291 A JP S61268291A JP 11248785 A JP11248785 A JP 11248785A JP 11248785 A JP11248785 A JP 11248785A JP S61268291 A JPS61268291 A JP S61268291A
- Authority
- JP
- Japan
- Prior art keywords
- rod
- shaft
- feed roller
- eccentric wheel
- drive
- 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.)
- Granted
Links
Landscapes
- Sewing Machines And Sewing (AREA)
- Advancing Webs (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、ミシンにおける布送りローラ駆動軸の駆動
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a drive device for a cloth feed roller drive shaft in a sewing machine.
第３図に示すように、例えばミシンアームの背面に取付
けた軸受１および軸受ブロック２で駆動軸３を回転可能
に支持し、上記軸受ブロック２に固定した支持アーム４
の下端部にローラアーム５を連結し、そのローラアーム
５の先端部で支持された支持軸６のまわりに駆動筒７を
回転可能に設け、前記駆動軸３を正負方向に設定角度回
転し、その回転を駆動軸３の端部に連結したスイングア
ーム８と、そのスイングアーム８と駆動筒７の連結片９
を連結するロッド１０とを介して上記駆動筒７に伝え、
その駆動筒７の一方向の回転を駆動筒７と同軸上に配置
した送りローラ１１に伝達し、この送りローラ１１の回
転によって布を前進送りするようにした布送り装置は従
来から存在する。As shown in FIG. 3, for example, a drive shaft 3 is rotatably supported by a bearing 1 and a bearing block 2 attached to the back of a sewing machine arm, and a support arm 4 is fixed to the bearing block 2.
A roller arm 5 is connected to the lower end of the roller arm 5, a drive cylinder 7 is rotatably provided around a support shaft 6 supported at the tip of the roller arm 5, and the drive shaft 3 is rotated by a set angle in the positive and negative directions. A swing arm 8 whose rotation is connected to the end of the drive shaft 3, and a connecting piece 9 between the swing arm 8 and the drive cylinder 7.
is transmitted to the drive cylinder 7 via the connecting rod 10,
Cloth feeding devices have conventionally existed in which rotation of the drive cylinder 7 in one direction is transmitted to a feed roller 11 disposed coaxially with the drive cylinder 7, and the cloth is fed forward by the rotation of the feed roller 11.
なお、駆動筒７の正負方向の回転のうち、一方向の回転
を送りローラ１１に伝えるようにした機構は実公昭５６
−７２５１号公報に示されており、公知である。Note that the mechanism for transmitting rotation in one direction of the positive and negative rotations of the drive cylinder 7 to the feed roller 11 was developed in 1983.
It is disclosed in Japanese Patent No. 7251 and is well known.
上記のような布送り装置においては、ミシンの送り歯と
タイミングをとって送りローラ１１を回転させる必要が
あるため、通常、ミシンの上軸１２の端部に偏心輪１３
を回り止めし、その偏心輪１３の外側に嵌合した外輪１
４にロッド１５を設ケ、上記ロッド１５の先端部と駆動
軸３の端部とをＬ形アーム１６で連結して上軸１２の一
方向の回転で駆動軸３を正負方向に設定角度回転するよ
うにしている。In the cloth feeding device as described above, since it is necessary to rotate the feed roller 11 in synchronization with the feed teeth of the sewing machine, an eccentric wheel 13 is usually installed at the end of the upper shaft 12 of the sewing machine.
The outer ring 1 is fitted on the outside of the eccentric ring 13.
A rod 15 is installed on the upper shaft 15, and the tip of the rod 15 and the end of the drive shaft 3 are connected by an L-shaped arm 16, and the rotation of the upper shaft 12 in one direction rotates the drive shaft 3 by a set angle in the positive and negative directions. I try to do that.
ところで、既に組立てられたミシンＣと対して布送り装
置を設ける場合、上軸１２の端部に偏心輪支持軸を接続
し、その支持軸で上記偏心輪を支持する必要がある。こ
の場合、上軸１２と支持軸の突き合わせ面の面精度を高
め上軸に対して支持軸を傾むきのないよう接続する必要
があり、その接続に際して支持軸に傾むきが生じると、
偏心輪１３は正しく回転せず、偏心輪１３と外輪１４と
の間に設けたころがり軸受が焼付けをおこし、ある０は
、ロッド１５とアーム１６の連結部に干渉（いわゆるこ
じれ）が生じ、回転伝動系を円滑に運動させることがで
きない。By the way, when a cloth feeding device is provided to the already assembled sewing machine C, it is necessary to connect an eccentric wheel support shaft to the end of the upper shaft 12 and to support the eccentric wheel with the support shaft. In this case, it is necessary to improve the surface precision of the abutting surfaces of the upper shaft 12 and the support shaft, and to connect the support shaft to the upper shaft without tilting, and if the support shaft tilts during the connection,
The eccentric ring 13 does not rotate properly, the rolling bearing installed between the eccentric ring 13 and the outer ring 14 seizes up, and in some cases, there is interference (so-called kink) in the connection between the rod 15 and the arm 16, causing rotation. The transmission system cannot move smoothly.
しかし、上軸１２の端面と支持軸の端面とがぴったりと
衝合するように両者の面精度を高める加工は実際問題と
して不可能である。従来のミシンにおいては、ロッド１
５とアーム１６との間に余裕をもたせて両部材の接続部
で干渉を吸収するようにしており、このため１回転の伝
達が悪く、駆動中に異音が発生し、駆動軸１２を精度よ
く回転させることができないという不都合がある。However, as a practical matter, it is impossible to process the end surface of the upper shaft 12 and the end surface of the support shaft to improve their surface precision so that they exactly abut each other. In conventional sewing machines, rod 1
5 and the arm 16 to absorb interference at the joint between the two members, this results in poor transmission of one rotation, causing abnormal noise during driving, and causing the drive shaft 12 to become inaccurate. There is a disadvantage that it cannot be rotated well.
そこで、この発明は上記の不都合を解消し、異音の発生
および軸受の焼付けを防止し、組立ての容易化を図るこ
とを技術的課題としている。Therefore, the technical object of the present invention is to solve the above-mentioned disadvantages, prevent the occurrence of abnormal noise and seizure of the bearing, and facilitate assembly.
上記の課題を解決するため、この発明は、外輪ね等の弾
性体で連結して両ロッドが上軸の軸方向に屈曲可能とし
、上記弾性体の曲がりｔこよって干渉を吸収するように
したのである。In order to solve the above problems, the present invention connects both rods with an elastic body such as an outer race ring so that both rods can be bent in the axial direction of the upper shaft, and the interference is absorbed by the bending of the elastic body. It is.
以下、この発明の実施例を第１図および第２図に基づい
て説明する。なお、先に述べた第３図のものと同一のも
のは同一の符号を付して説明する。Embodiments of the present invention will be described below with reference to FIGS. 1 and 2. Components that are the same as those shown in FIG. 3 described above will be described with the same reference numerals.
図示のように、上軸１２の端面にはねじ孔１７が形成さ
れ、そのねじ孔１７にねじ込むビス１８によって偏心輪
支持軸１９が接続されている。この支持軸１９の外側に
はバランスホイール２０を有する偏心輪１３が嵌め合わ
されて回り止めされている。As shown in the figure, a screw hole 17 is formed in the end surface of the upper shaft 12, and an eccentric wheel support shaft 19 is connected by a screw 18 screwed into the screw hole 17. An eccentric wheel 13 having a balance wheel 20 is fitted on the outside of the support shaft 19 to prevent it from rotating.
上記偏心輪１３のまわりｔこけ外輪１４が外装され、そ
の外輪１４と偏心輪１３との間（こころカダリ軸受２１
が組込まれている。A moss outer ring 14 is provided around the eccentric ring 13, and between the outer ring 14 and the eccentric ring 13 (the outer ring 14 is
is incorporated.
外輪１４はロッド１５を備え、そのロッド１５は長さ方
向昏こ分割され、その分割によって形成された上部ロッ
ド１５′と下部ロッド１５″は板ばね等から成る弾性体
２１によって連結され、上部口゛ンド１５′と下部ロッ
ド１５″とが上軸１２の軸方同番こ屈曲し得るようにな
っている。The outer ring 14 is equipped with a rod 15, and the rod 15 is divided in the longitudinal direction, and the upper rod 15' and lower rod 15'' formed by the division are connected by an elastic body 21 made of a leaf spring or the like. The lower rod 15'' and the lower rod 15'' can be bent at the same angle in the axial direction of the upper shaft 12.
上記下部ロッド１５″の下端にはロッドエンド２２が接
続され、そのロッドエンド２２の先端に接続したＬ形ア
ーム１６が送りローラ駆動軸３の端部に固定されている
。A rod end 22 is connected to the lower end of the lower rod 15'', and an L-shaped arm 16 connected to the tip of the rod end 22 is fixed to an end of the feed roller drive shaft 3.
いま、上軸１２を一方向番こ連続回転すると、同軸上に
取付けられた偏心輪１３が回転し・、外輪１４のロッド
１５が上下動する。このためアーム１６は揺動し、駆動
軸３を正負方向に設定角度回転させることができる。Now, when the upper shaft 12 is continuously rotated in one direction, the eccentric ring 13 mounted on the same axis rotates, and the rod 15 of the outer ring 14 moves up and down. Therefore, the arm 16 swings, and the drive shaft 3 can be rotated by a set angle in the positive and negative directions.
上記のような回転伝動時において、支持軸１９が上軸１
２に対して傾斜していると、偏心輪１３は芯振れした状
態で回転するため、外輪１４のロッド１５は上軸１２の
軸芯に直交する面１こ対して振れを生じながら上下動す
ることになり、偏心輪１３と外輪１４との間、およびロ
ッドエンド２２とアーム１６の接続部においてこじれを
生じるが、このとき、弾性体２１に曲げ方向の応力が集
中するため、弾性体２１が変形し、その変形によってこ
じれを吸収することができる。During rotational transmission as described above, the support shaft 19 is
2, the eccentric ring 13 rotates with a center runout, and the rod 15 of the outer ring 14 moves up and down with a runout relative to a plane perpendicular to the axis of the upper shaft 12. This causes twisting between the eccentric ring 13 and the outer ring 14 and at the connection between the rod end 22 and the arm 16. At this time, stress in the bending direction concentrates on the elastic body 21, so that the elastic body 21 It deforms and can absorb strain through that deformation.
以上のように、この発明においては、外輪に設けたロッ
ドを長さ方向に分割し、その分割によつて形成された上
部ロッドと下部ロッドとを板ばね等の弾性体で連結した
ので、主軸に接続した偏心輪支持軸が主軸に対して傾斜
していると、主軸の回転伝動時に偏心輪とアームとによ
って両端部が拘束されたロッドは分割位置において折れ
曲がる。As described above, in this invention, the rod provided on the outer ring is divided in the length direction, and the upper rod and lower rod formed by the division are connected by an elastic body such as a leaf spring. If the eccentric wheel support shaft connected to the rod is inclined with respect to the main shaft, the rod, whose both ends are restrained by the eccentric ring and the arm, will bend at the splitting position during rotational transmission of the main shaft.
このため、弾性体の変形によって、ロッド両端部に作用
するこじれを吸収することができ、偏心輪と外輪との間
に設けた軸受の焼付けを防止したり、ロッド両端部とア
ームの連結部において異音が発生するのを防止すること
ができ、上軸の回転を駆動軸に円滑に伝達することがで
きる。For this reason, the deformation of the elastic body can absorb the strain acting on both ends of the rod, preventing seizure of the bearing installed between the eccentric ring and the outer ring, and preventing It is possible to prevent abnormal noise from being generated, and the rotation of the upper shaft can be smoothly transmitted to the drive shaft.
また、弾性体の変形によってこじれを吸収することがで
きるため、偏心輪支持軸の接続精度を高める必要がなく
、支持軸および上軸端面の加工が容易であり、また組立
ても容易である。Furthermore, since twisting can be absorbed by the deformation of the elastic body, there is no need to increase the connection accuracy of the eccentric wheel support shaft, and the support shaft and upper shaft end face can be easily processed and assembled.
第１図はこの発明に係る駆動装置の一実施例を示す工面
図、第２図は同上の一部切欠側面図、第３図は従来の駆
動装置を示す斜視図である。
３・・・駆動軸、１２・・・上軸、１３・・・偏心輪、
１４・・・外輪、１５・・・ロッド、１５′・・・上部
ロッド、１５″・・・下部ロッド、１６・・アー・ム、
１９・・・支持軸、２１・・・弾性体FIG. 1 is a construction view showing an embodiment of a drive device according to the present invention, FIG. 2 is a partially cutaway side view of the same, and FIG. 3 is a perspective view showing a conventional drive device. 3... Drive shaft, 12... Upper shaft, 13... Eccentric wheel,
14...Outer ring, 15...Rod, 15'...Upper rod, 15''...Lower rod, 16...Arm,
19... Support shaft, 21... Elastic body
Claims (1)
に偏心輪を嵌合して回り止めし、偏心輪の外側に回転可
能に嵌合した外輪にロッドを設け、そのロッドの先端部
と上記上軸に平行に配置した送りローラ駆動用の駆動軸
の端部とをアームで連結して前記上軸の一方向の回転に
より駆動軸を正負方向に設定角度回転させるようにした
布送りローラ駆動軸の駆動装置において、前記ロッドを
長さ方向に分割し、その分割によつて形成された上部ロ
ッドと下部ロッドとが主軸の軸方向に屈曲し得るよう両
ロッドを弾性体で連結したことを特徴とする布送りロー
ラ駆動軸の駆動装置。An eccentric wheel support shaft is connected to the end surface of the upper shaft of the sewing machine, an eccentric wheel is fitted on the outside of the shaft to prevent rotation, a rod is provided on the outer ring rotatably fitted on the outside of the eccentric wheel, and a rod is provided at the tip of the rod. and the end of a drive shaft for driving a feed roller arranged parallel to the upper shaft are connected by an arm, and the drive shaft is rotated by a set angle in positive and negative directions by rotation of the upper shaft in one direction. In a drive device for a feed roller drive shaft, the rod is divided in the length direction, and the upper rod and lower rod formed by the division are connected by an elastic body so that they can be bent in the axial direction of the main shaft. A drive device for a cloth feed roller drive shaft, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11248785A JPS61268291A (en) | 1985-05-23 | 1985-05-23 | Drive apparatus of cloth feed roller driving shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11248785A JPS61268291A (en) | 1985-05-23 | 1985-05-23 | Drive apparatus of cloth feed roller driving shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61268291A true JPS61268291A (en) | 1986-11-27 |
| JPH0112515B2 JPH0112515B2 (en) | 1989-03-01 |
Family
ID=14587871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11248785A Granted JPS61268291A (en) | 1985-05-23 | 1985-05-23 | Drive apparatus of cloth feed roller driving shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61268291A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63275390A (en) * | 1987-04-30 | 1988-11-14 | ロツクウエル−リモルデイ・エス・ピー・エー | Modular sewing machine having auxiliary apparatus control function |
| JPS6440380U (en) * | 1987-08-29 | 1989-03-10 |
-
1985
- 1985-05-23 JP JP11248785A patent/JPS61268291A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63275390A (en) * | 1987-04-30 | 1988-11-14 | ロツクウエル−リモルデイ・エス・ピー・エー | Modular sewing machine having auxiliary apparatus control function |
| JPH0489267U (en) * | 1987-04-30 | 1992-08-04 | ||
| JPS6440380U (en) * | 1987-08-29 | 1989-03-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0112515B2 (en) | 1989-03-01 |
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