JPS6137192A - Needle thread amount controller of sewing machine - Google Patents
Needle thread amount controller of sewing machineInfo
- Publication number
- JPS6137192A JPS6137192A JP15811284A JP15811284A JPS6137192A JP S6137192 A JPS6137192 A JP S6137192A JP 15811284 A JP15811284 A JP 15811284A JP 15811284 A JP15811284 A JP 15811284A JP S6137192 A JPS6137192 A JP S6137192A
- Authority
- JP
- Japan
- Prior art keywords
- thread
- amount adjusting
- adjusting member
- sewing
- sewing machine
- 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)
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］ 本発明はミシンの上糸量調節装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a needle thread amount adjusting device for a sewing machine.
［従来技術］
従来この種の装置としては、縫目糸が担持された天秤を
サーボモータで上下動させ、その上下動を予め指令され
た縫い条件に従って制御し、そのストロークを変化させ
、縫目糸の供給量を変化させるものがあった。[Prior Art] Conventionally, this type of device uses a servo motor to move a thread take-up lever up and down, controls the up and down movement according to pre-commanded sewing conditions, changes the stroke, and stitches the thread. There was one that changed the amount of yarn supplied.
［発明が解決しようとする問題点］
この装置においては、天秤を直接サーボモータで上下動
させているために、きめ細かな天秤のストロークの調節
ができる反面、このサーボモータには大きなトルクが必
要であり、サーボモータが大型化すると共に、ミシンの
高速化への対応が困難であった。[Problems to be solved by the invention] In this device, since the balance is moved up and down directly by a servo motor, the stroke of the balance can be finely adjusted, but on the other hand, this servo motor requires a large torque. However, as the servo motor became larger, it was difficult to adapt to higher speed sewing machines.
［発明の目的］
本発明は従来の欠点を解消するためになされたものであ
り、その目的は小型の駆動手段を使用でき、しかもミシ
ンの高速化に対応でき、縫製条件によって上糸供給量が
自動的に設定されるミシンの上糸量調節装置を提供する
ことにある。[Object of the Invention] The present invention has been made in order to eliminate the drawbacks of the conventional technology.The purpose of the present invention is to use a small-sized drive means, to be able to cope with higher speed sewing machines, and to be able to adjust the upper thread supply amount depending on the sewing conditions. An object of the present invention is to provide a needle thread amount adjusting device for a sewing machine that is automatically set.
［問題点を解決するための手段］
本発明は、ミシンの主軸と機械的に連結さ些て機枠に対
して上下動される天秤と、その天秤の上昇により緊張さ
れた上糸に係合し、その経路を変化させるために前記機
枠に対し変位可能な糸量調節部材と、その糸量調節部材
を変位させる駆動手段と、縫製条件を指令する入力手段
と、その入力手段によって指令された縫製条件に基づい
て前記駆動手段を介して糸量調節部材を変位させる設定
手段とより構成されている。[Means for Solving the Problems] The present invention includes a take-up lever that is mechanically connected to the main shaft of a sewing machine and is moved up and down with respect to the machine frame, and engages the upper thread that is tensioned by the rise of the take-up thread. a thread amount adjusting member displaceable relative to the machine frame in order to change the route; a driving means for displacing the thread amount adjusting member; an input means for commanding sewing conditions; and a setting means for displacing the thread amount adjusting member via the driving means based on the sewing conditions set.
［作用］
本発明においては、主軸により高速駆動される天秤に担
持された上糸が天秤の上昇により緊張された時、その上
糸に糸量調節部材が係合する。糸量調節部材は駆動手段
によって変位されて上糸の経路を変化させ、上糸供給量
を変化させる。また、設定手段は入力手段によって指令
された縫製条件に基づいて駆動手段を介して糸量調節部
材を変位させ、最適な上糸供給量を設定する。[Operation] In the present invention, when the upper thread carried on the take-up thread driven at high speed by the main shaft is tensioned by the rise of the thread take-up, the thread amount adjusting member engages with the upper thread. The thread amount adjusting member is displaced by the driving means to change the path of the upper thread, thereby changing the amount of upper thread supplied. Further, the setting means displaces the thread amount adjusting member via the driving means based on the sewing conditions commanded by the input means, and sets an optimum upper thread supply amount.
［実施例］
以下に本発明を具体化した一実施例を示す図面を参照し
てその詳細を説明する。[Example] The details of an embodiment of the present invention will be described below with reference to the drawings.
図においてミシンの機枠１には主軸（図示せず）に連結
され、機枠１に形成された溝１９において公知の揺動運
動をする天秤２が支持されており、その天秤２はストＯ
−りが一定であると共に、その天秤２の先端には、それ
ぞれ上糸３の挿通孔２１が形成された二股部２２が形成
されている。In the figure, a machine frame 1 of the sewing machine is connected to a main shaft (not shown) and is supported in a groove 19 formed in the machine frame 1 to perform a known swinging motion.
The thread take-up lever 2 has a forked portion 22 at the tip thereof, each having a through-hole 21 for the upper thread 3 therein.
前記機枠１には糸量調節部材４が前記主軸と平行な軸５
により回動可能に支持されており、その自由端４１は機
枠１の溝１９から突出して前記天秤２の二股部２２中に
位置する。この糸量調節部材４の自由端４１には上糸係
合面４２が形成されており、その上糸係合面４２は前記
天秤２の上昇時に二股部２２に挿通された上糸３に係合
してこれを屈曲させる。A yarn amount adjusting member 4 is attached to the machine frame 1 with a shaft 5 parallel to the main shaft.
The free end 41 protrudes from the groove 19 of the machine frame 1 and is located in the bifurcated portion 22 of the balance 2. An upper thread engaging surface 42 is formed on the free end 41 of the thread amount adjusting member 4, and the upper thread engaging surface 42 engages the upper thread 3 inserted into the forked portion 22 when the thread take-up lever 2 is raised. and bend it.
前記機枠１の上部には立垂部１１が突出形成されており
、その立垂部１１の前記糸量調節部材４側には、駆動手
段としてのパルスモータ６がねじ７により固定されてい
る。このパルスモータ６の駆動軸６１は前記主軸と平行
に前記糸量調節部材４の方向へ延びており、前記糸量調
節部材４と隣接して係合部材８がねじ１２により固定さ
れている。A vertical hanging part 11 is formed projecting from the upper part of the machine frame 1, and a pulse motor 6 as a driving means is fixed with a screw 7 to the vertical hanging part 11 on the side of the yarn amount adjusting member 4. . A drive shaft 61 of the pulse motor 6 extends parallel to the main shaft in the direction of the yarn amount adjusting member 4 , and an engaging member 8 is fixed adjacent to the yarn amount adjusting member 4 with a screw 12 .
この係合部材８は前記駆動軸６１の半径方向に延びる係
合溝８１が形成されており、前記駆動軸６１と一体に回
動可能である。This engaging member 8 is formed with an engaging groove 81 extending in the radial direction of the drive shaft 61, and is rotatable together with the drive shaft 61.
ここで、前記糸量調節部材４には前記係合部材８側に突
出するように係合ピン９が突設されており、この係合ビ
ン９は前記係合部材８の係合溝８１に係合している。従
って、前記パルスモータ６の作動により回動される前記
係合部材８と連動して前記糸量調節部材４は回動される
。Here, an engagement pin 9 is provided on the thread amount adjusting member 4 so as to protrude toward the engagement member 8 side, and this engagement pin 9 is inserted into the engagement groove 81 of the engagement member 8. engaged. Therefore, the yarn amount adjusting member 4 is rotated in conjunction with the engaging member 8 which is rotated by the operation of the pulse motor 6.
前記機枠１には糸案内１５．１６．１７がそれぞれ取付
けられており、この糸案内１５．１６゜１７により上糸
３は上糸供給源（図示せず）から前記天秤２を経て上下
動される針１８に案内される。Thread guides 15, 16, and 17 are respectively attached to the machine frame 1, and the thread guides 15, 16, and 17 move the needle thread 3 up and down from the needle thread supply source (not shown) through the thread take-up 2. The needle 18 is guided by the needle 18.
前記機枠１には入力手段としての入力スイッチ１３が設
置されており、この入力スイッチ１３は縫製条件毎に選
択されて操作される。An input switch 13 as an input means is installed in the machine frame 1, and the input switch 13 is selected and operated for each sewing condition.
前記機枠１内にはデジタル演算回路で構成された設定手
段としてのコントローラ１４が設置されており、その入
力端子には前記入力スイッチ１３がそれぞれ接続され、
出力端子にはパルスモータ駆動回路（図示せず）を介し
て前記パルスモータ６が接続されている。A controller 14 as a setting means composed of a digital arithmetic circuit is installed in the machine frame 1, and the input switches 13 are connected to the input terminals of the controller 14, respectively.
The pulse motor 6 is connected to the output terminal via a pulse motor drive circuit (not shown).
このコントローラ１４は、縫目ビッヂの大小、糸の伸縮
性の大小、上糸の張力の大小等、各縫製条件毎に最適な
上糸供給量となる前記糸量調節部材４の上糸係合面４２
の上死点における天秤２に対する位置を示す前記パルス
モータ６の駆動軸６１の回転位置データがそれぞれ記憶
された読出し専用メモリ（図示せず）を有している。更
に、前記コントローラ１４はその作動により前記入力ス
イッチ１３の状態を検出して、指令された縫製条件に対
応する回転位置データを前記読出専用メモリから読出し
、このデータに基づいて前記パルスモータ６を駆動する
ように構成されている。This controller 14 controls the needle thread engagement of the thread amount adjusting member 4 to obtain the optimum needle thread supply amount for each sewing condition such as the size of the stitch bit, the elasticity of the thread, and the tension of the needle thread. Surface 42
It has a read-only memory (not shown) in which rotational position data of the drive shaft 61 of the pulse motor 6 indicating the position relative to the balance 2 at the top dead center of the pulse motor 6 is stored. Furthermore, the controller 14 detects the state of the input switch 13 through its operation, reads rotational position data corresponding to the commanded sewing conditions from the read-only memory, and drives the pulse motor 6 based on this data. is configured to do so.
次にその作用を説明する。Next, its effect will be explained.
使用者は、糸量調節部材４を手により第２図における反
時計方向に回動させて溝１９の側壁に係合させ、その上
糸係合面４２を上死点における天秤２よりも上方に位置
させる。この状態において使用者は、上糸３を糸案内１
５に通した後、天秤２のそれぞれの挿通孔２１に通し、
糸案内１５゜１６．１７を通して針１８にこの上糸３を
担持させる。The user rotates the thread amount adjusting member 4 by hand in the counterclockwise direction in FIG. to be located. In this state, the user threads the upper thread 3 into the thread guide 1.
5, and then through each insertion hole 21 of the balance 2,
This upper thread 3 is carried by the needle 18 through the thread guide 15° 16.17.
次に使用者は実際に縫製作業を行なう場合の縫製条件に
従って入力スイッチ１３を操作した後に電源を投入する
。これによりコントローラ１４が作動して入力スイッチ
１３の状態を検出し、指令された縫製条件に対応する回
転位置データを読出専用メモリから読出し、このデータ
に基づいて前記パルスモータ６を駆動して糸量調節部材
４を回動させる。一方、天秤２は主軸が回転されること
によって揺動され、その上昇により天秤２の二股部２２
に担持された上糸３は糸量調節部材４の上糸係合面４２
に係合して屈曲される。前述の通り糸量調節部材４が最
適の位置にあるので適切な上糸が供給され、良好な縫目
が形成される。Next, the user operates the input switch 13 according to the sewing conditions for actual sewing work, and then turns on the power. As a result, the controller 14 is actuated to detect the state of the input switch 13, read rotational position data corresponding to the commanded sewing conditions from the read-only memory, and drive the pulse motor 6 based on this data to increase the amount of thread. Rotate the adjustment member 4. On the other hand, the balance 2 is swung by the rotation of the main shaft, and the forked part 22 of the balance 2 is swung as the main shaft is rotated.
The upper thread 3 carried by the needle thread engaging surface 42 of the thread amount adjusting member 4
is engaged and bent. As described above, since the thread amount adjusting member 4 is in the optimal position, an appropriate needle thread is supplied and a good stitch is formed.
尚、本発明は前述の実施例にのみ限定されるものではな
く、縫製条件を指令する入力手段としては、可変抵抗等
によりアナログ値を指令覆る方式であってもよい。また
、駆動手段もパルスモータに限らず、デジタル信号をア
ナログ信号に変換してサーボモータ等で糸量調節部材を
変位させてもよい。It should be noted that the present invention is not limited to the above-described embodiments, and the input means for commanding sewing conditions may be of a type that overrides analog values using a variable resistor or the like. Further, the driving means is not limited to a pulse motor, and a digital signal may be converted into an analog signal and a servo motor or the like may be used to displace the yarn amount adjusting member.
［効果］
本発明は、主軸により機械的に上下動される天秤と、主
軸とは別個の駆動手段により変位される糸量調節部材と
を設け、しかもその駆動手段を入力手段によって指令さ
れた縫製条件に基づいて作動させているので、天秤と糸
量調節部材との協働により常に上糸供給量をその縫製条
件に適したものに設定できる。また、駆動手段は糸量調
節部材のみを変位させるだけなので、小型化が可能であ
る。又更に天秤が通常のミシンと同様に主軸により上下
動されるもので前記糸量調節部材の設置が縫製条件に悪
影響を及ぼすことがなくミシンを高速で駆動することが
できる。[Effects] The present invention includes a thread take-up lever that is mechanically moved up and down by a main shaft, and a thread amount adjusting member that is displaced by a drive means separate from the main shaft, and furthermore, the drive means can be used to perform sewing commanded by an input means. Since the sewing machine is operated based on the sewing conditions, the needle thread supply amount can always be set to be suitable for the sewing conditions through cooperation between the thread take-up and the thread amount adjusting member. Further, since the driving means only displaces the yarn amount adjusting member, it is possible to downsize the apparatus. Furthermore, since the thread take-up lever is moved up and down by the main shaft in the same way as in a normal sewing machine, the installation of the thread amount adjusting member does not adversely affect sewing conditions, and the sewing machine can be driven at high speed.
第１図は本発明を具体化した一実施例を示づ正面図、第
２図はそのＡ−Δ線断面図、第３図はブロック図である
。
２は天秤、３は上糸、４は糸量調節部材、６はパルスモ
ータ、１３は入力スイッチ、１４はコントローラである
。FIG. 1 is a front view showing an embodiment embodying the present invention, FIG. 2 is a sectional view taken along the line A-Δ, and FIG. 3 is a block diagram. 2 is a thread take-up, 3 is an upper thread, 4 is a thread amount adjusting member, 6 is a pulse motor, 13 is an input switch, and 14 is a controller.
Claims (1)
の主軸と機械的に連結されて上下動される天秤と、 前記機枠に対し変位可能に設置され、前記天秤の上昇に
より緊張された上糸に係合し、その経路を変化させるこ
とにより上糸供給量を変化させる糸量調節部材と、 その糸量調節部材を変位させるために作動する駆動手段
と、 縫製条件を指令する入力手段と、 その入力手段によつて指令された縫製条件に基づいて前
記駆動手段を作動させて前記糸量調節部材を変位させ、
上糸供給量をその縫製条件に適したものに設定する設定
手段とより構成されていることを特徴とするミシンの上
糸量調節装置。[Scope of Claims] 1. A take-up lever that is supported to be movable up and down with respect to the machine frame and is mechanically connected to the main shaft of the sewing machine to move up and down; a thread amount adjusting member that engages with the upper thread tensioned by the rise of the thread take-up and changes the upper thread supply amount by changing its path; and a driving means that operates to displace the thread amount adjusting member. an input means for commanding sewing conditions; and operating the drive means to displace the thread amount adjusting member based on the sewing conditions commanded by the input means;
An upper thread amount adjusting device for a sewing machine, comprising a setting means for setting an upper thread supply amount to a value suitable for sewing conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15811284A JPS6137192A (en) | 1984-07-27 | 1984-07-27 | Needle thread amount controller of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15811284A JPS6137192A (en) | 1984-07-27 | 1984-07-27 | Needle thread amount controller of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6137192A true JPS6137192A (en) | 1986-02-22 |
| JPH0577439B2 JPH0577439B2 (en) | 1993-10-26 |
Family
ID=15664562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15811284A Granted JPS6137192A (en) | 1984-07-27 | 1984-07-27 | Needle thread amount controller of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6137192A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63234995A (en) * | 1987-03-23 | 1988-09-30 | ブラザー工業株式会社 | Automatic thread tensible lock stitch sewing machine |
-
1984
- 1984-07-27 JP JP15811284A patent/JPS6137192A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63234995A (en) * | 1987-03-23 | 1988-09-30 | ブラザー工業株式会社 | Automatic thread tensible lock stitch sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0577439B2 (en) | 1993-10-26 |
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