JPH0422115B2 - - Google Patents
Info
- Publication number
- JPH0422115B2 JPH0422115B2 JP1180268A JP18026889A JPH0422115B2 JP H0422115 B2 JPH0422115 B2 JP H0422115B2 JP 1180268 A JP1180268 A JP 1180268A JP 18026889 A JP18026889 A JP 18026889A JP H0422115 B2 JPH0422115 B2 JP H0422115B2
- Authority
- JP
- Japan
- Prior art keywords
- cloth
- seam
- fabric
- cloth feeding
- scraping
- 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 - Lifetime
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- Sewing Machines And Sewing (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は縫代制御装置、特に縫代（縫い目線）
を一定に保つ制御装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seam allowance control device, particularly a seam allowance (seam line)
The invention relates to a control device that maintains a constant value.
従来、ミシンの針落ち部の縫い方向手前近傍に
生地端の位置を検知する検出器と、ミシンに備え
られた送り機構による縫い目形成方向と直交した
方向に生地を移動せしめるため生地に圧接して設
けたローラ状の回転体とを夫々上下２枚の生地に
対向して備え、生地の掻き込み、掻き出しによつ
て一定の縫い目線が得られるようにした装置が開
発されている。
Conventionally, a sewing machine has a detector that detects the position of the edge of the fabric near the front of the needle drop point in the sewing direction, and a feed mechanism installed in the sewing machine that presses against the fabric to move the fabric in a direction perpendicular to the seam forming direction. A device has been developed in which a roller-like rotating body is provided facing two upper and lower fabrics, and a fixed seam line is obtained by scraping and scraping the fabric.
第５図ａ，ｂ及び第６図において、１は本縫い
ミシン、２は縫針、３ｕ，３ｄは生地の縫い目形
成方向と直交した方向に生地を移動させるため
上，下生地夫々に対応して配置したローラ状生地
圧接回転体、４ｕ−１，４ｄ−１は生地の側端を
検出するために付加された発光体、５は前記生地
圧接回転体３ｕ，３ｄに回転を伝達する傘歯車、
６は伝達シヤフト、７はモータ、８は上下生地が
夫々独立して動作し互いの干渉が避けられるよう
にするための上下生地分離板、９はミシンの押え
足、１０ｕ，１０ｄは夫々上下生地、１１は生地
送り歯、１２は縫い目線１５からの距離１４を読
み取る太陽電池から成るリニアセンサ、１３は生
地の側端である。 In Figures 5a, b and 6, 1 is a lockstitch sewing machine, 2 is a sewing needle, and 3u, 3d correspond to upper and lower fabrics, respectively, in order to move the fabric in a direction perpendicular to the seam forming direction of the fabric. 4u-1 and 4d-1 are light emitters added to detect the side edges of the fabric; 5 is a bevel gear that transmits rotation to the fabric pressure-contacting rotating bodies 3u and 3d;
6 is a transmission shaft, 7 is a motor, 8 is a top and bottom fabric separation plate to allow the upper and lower fabrics to operate independently and avoid interference with each other, 9 is the presser foot of the sewing machine, and 10u and 10d are the upper and lower fabrics, respectively. , 11 is a fabric feed dog, 12 is a linear sensor consisting of a solar cell that reads the distance 14 from the seam line 15, and 13 is a side edge of the fabric.
このような従来の縫代制御装置においては、生
地送り歯１１によつて第６図の矢印方向に示すよ
うに生地の側端１３がカーブした生地１０が送ら
れると縫い目線１５と生地の側端１３との距離１
４は上記カーブに沿つて変化する。この変化分を
リニアセンサ１２が読み取り、上記距離１４が常
に一定になるようにモータ７を制御し、生地圧接
回転体３ｕ，３ｄによつて生地１０を第７図の上
下方向に移動させ、常時縫代を一定に保つように
している。 In such a conventional seam allowance control device, when the fabric 10 whose side edge 13 is curved as shown in the arrow direction in FIG. 6 is fed by the fabric feed dog 11, the seam line 15 and the side of the fabric are Distance 1 from end 13
4 changes along the above curve. The linear sensor 12 reads this change, controls the motor 7 so that the distance 14 is always constant, and moves the fabric 10 in the vertical direction in FIG. 7 by the fabric pressing rotary bodies 3u and 3d. I try to keep the seam allowance constant.
然しながらこのような従来の装置においては第
６図における縫製が進んで、縫い目が図中Ａの領
域からＢに移つた場合、第７図に示すように生地
の織り目は縦目又は横目から斜目に変わる。この
時生地１０は伸び易い状態となり、生地送り歯１
１によつて生地を第７図の矢印方向に引く力と、
生地圧接回転体３ｕ，３ｄが生地を押されている
力との間に張力が働き、このため送り方向には伸
びが生じ、一方その直角方向には縮みが生ずる。
このためリニアセンサ１２は見掛け上X2と少な
い値を読み取り、それに応じて生地圧接回転体３
ｕ，３ｄは生地を掻き込む方向に（図の上方に生
地を動作）制御される。この結果縫製後、伸びた
生地が元に戻ると縫代幅が設定値より大きくなり
縫製品質が満足出来ないものとなる。
However, in such a conventional device, when the sewing progresses in Figure 6 and the seam moves from area A to area B in the figure, the weave of the fabric changes from vertical or horizontal to diagonal as shown in Figure 7. Changes to At this time, the dough 10 is in a state where it is easy to stretch, and the dough feed dog 1
1 to pull the fabric in the direction of the arrow in Figure 7;
A tension force acts between the fabric pressing rotary bodies 3u and 3d and the force with which the fabric is pressed, and as a result, elongation occurs in the feeding direction, while shrinkage occurs in the direction perpendicular to the feeding direction.
Therefore, the linear sensor 12 reads an apparently small value of X 2 , and accordingly the cloth pressing rotary body 3
u and 3d are controlled in the direction of scraping the dough (moving the dough upward in the figure). As a result, if the stretched fabric returns to its original shape after sewing, the seam allowance width will become larger than the set value, resulting in unsatisfactory sewing quality.
本発明は上記の欠点を除くようにしたものであ
る。 The present invention seeks to eliminate the above-mentioned drawbacks.
本発明の縫代制御装置は生地端位置と縫い目線
間の距離を検出する機構と、この距離検出機構の
出力に応じて生地の掻き込み、掻き出し動作を行
う布制御機構とを有する縫代制御装置において、
縫制すべき生地の縫い位置における生地の特性を
記憶せしめたメモリと、実際の縫い位置を検出す
る手段と、この位置検出手段により検出された縫
い位置における上記メモリに記憶された生地の特
性によつて布制御機構の動作量を補正せしめる手
段とより成ることを特徴とする。
The seam allowance control device of the present invention has a mechanism that detects the distance between the fabric edge position and the seam line, and a fabric control mechanism that performs raking and raking operations of the fabric according to the output of this distance detection mechanism. In the device,
A memory that stores the characteristics of the fabric at the sewing position of the fabric to be sewn, a means for detecting the actual sewing position, and a fabric characteristic stored in the memory at the sewing position detected by the position detecting means. The invention is characterized by comprising means for correcting the amount of operation of the cloth control mechanism.
本発明の縫代制御装置においては生地の持つ伸
縮特性等の変化に応じて生地端検出機構の検出し
た生地端のずれ量が補正される。
In the seam allowance control device of the present invention, the amount of deviation of the fabric edge detected by the fabric edge detection mechanism is corrected in accordance with changes in the stretch characteristics of the fabric.
以下図面によつてこの発明の実施例を説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.
例えば第１図に示すような端縁形状を持つ生地
１０の該端縁に沿い縫い目を形成する場合、生地
１０の織り目方向に対し縫い目線１５の方向が一
致する端縁部毎にn1，n2，n3，……と複数部分に
分割し、例えば本願出願人に係る特願昭63−
285699号明細書および図面（特開平２−132374号
公報）に記載された技術により、その各部分n1，
n2，n3，……について縫い目線方向に対する伸び
長さを測定する。 For example, when forming a seam along the edge of a fabric 10 having an edge shape as shown in FIG. 1, n 1 , n 2 , n 3 , .
By the technology described in the specification and drawings of No. 285699 (Japanese Unexamined Patent Publication No. 2-132374), each part n 1 ,
Measure the elongation length of n 2 , n 3 , ... in the seam line direction.
第２図のブロツク図において、２１は前記伸び
長さ及び布送りピツチをデータとして入力するた
めのキーボード入力手段、２４は入力された伸び
長さ及び入力された布送りピツチに基づいて
CPU２５において計算された各部分n1，n2，n3，
……の縫い針数（各部分の長さ÷指定布送りピツ
チ）を記憶するメモリである。伸び長さは針数に
対応して読み出し可能に記憶される。リニアセン
サ１２の出力は増幅器２２及びＡ／Ｄ変換器２３
を介してCPU２５へ入力される。ミシンには主
軸の１回転を検出するための周知のパルス発生器
（図示しない）が設けてあり、この１回転パルス
をカウンタ２６がカウントしてCPU２５へ運針
データとして出力する。２７は２つのモータ７を
各別に制御するドライバである。 In the block diagram of FIG. 2, 21 is a keyboard input means for inputting the elongation length and cloth feed pitch as data, and 24 is a keyboard input means for inputting the elongation length and cloth feed pitch as data.
Each part calculated by the CPU 25 n 1 , n 2 , n 3 ,
This is a memory that stores the number of sewing stitches (length of each section ÷ designated cloth feed pitch). The elongated length is readably stored in correspondence with the number of stitches. The output of the linear sensor 12 is sent to an amplifier 22 and an A/D converter 23.
It is input to the CPU 25 via. The sewing machine is equipped with a well-known pulse generator (not shown) for detecting one revolution of the main shaft, and a counter 26 counts this one revolution pulse and outputs it to the CPU 25 as hand movement data. Reference numeral 27 represents a driver that controls each of the two motors 7 separately.
以上のような構成において、ミシンが駆動され
生地１０への縫い目形成が開始されると、カウン
タ２６からの運針データに基づいて針数データに
対応する伸び長さデータがメモリ２４から読み出
され、この伸び長さデータに基づいて生地圧接回
転体３ｕ，３ｄの布掻き出し量が補正され、モー
タ７の回転量が制御される。即ち伸び長さが大き
い程掻き出し量が少なくなるような所定補正量が
与えられる。この所定補正量は演算により又はメ
モリのテーブル上に記憶することにより得られ
る。又伸び長さに代えて伸び率をデータとしても
良い。 In the above-described configuration, when the sewing machine is driven to start forming stitches on the fabric 10, elongation length data corresponding to the number of stitches data is read out from the memory 24 based on the needle movement data from the counter 26. Based on this elongation length data, the cloth scraping amount of the cloth pressing rotary bodies 3u, 3d is corrected, and the rotation amount of the motor 7 is controlled. That is, a predetermined correction amount is given such that the greater the elongation length, the smaller the scraping amount. This predetermined correction amount can be obtained by calculation or by storing it on a table in memory. Furthermore, the elongation rate may be used as data instead of the elongation length.
次に第２実施例について説明する。前記第１の
実施例では予め伸び長さを測定してメモリ中に記
憶し運針に対応して読み出すものを示したが、第
３図，第４図に示す第２実施例では、生地圧接回
転体３ｕよりも布送り方向手前に前記特願昭63−
285699号明細書および図面（特開平２−132374号
公報）に詳述した伸び長さ測定部材２８ａ，２８
ｂを設置し、ミシンの駆動に同期して各縫い目形
成毎に伸び長さを測定する。即ち第３図に示した
ように、両測定部材２８ａ，２８ｂの回転軸２９
ａ，２９ｂ先端のフツクを生地に突刺し、両回転
軸２９ａ，２９ｂをそれぞれ所定トルクで逆方向
に回転し、回転トルクと生地の復元力が釣り合つ
たときの回転軸２９ａ，２９ｂの回転角、即ち回
転軸２９ａ，２９ｂ先端の離間距離をロータリー
エンコーダ（図示しない）により検出するもので
ある。この伸び長さ検知出力を入力とするCPU
２５は生地圧接回転体３ｕの掻き出し量を前記と
同様に補正するようにモータ７の回転を制御す
る。 Next, a second embodiment will be described. In the first embodiment, the elongation length is measured in advance, stored in the memory, and read out in accordance with the movement of the hands, but in the second embodiment shown in FIGS. The above-mentioned patent application No. 63- is located before the body 3u in the cloth feeding direction.
Elongation length measuring members 28a, 28 detailed in the specification and drawings of No. 285699 (Japanese Unexamined Patent Publication No. 2-132374)
b, and measure the length of elongation each time a seam is formed in synchronization with the driving of the sewing machine. That is, as shown in FIG.
The rotation angle of the rotating shafts 29a, 29b when the hooks at the tips of a, 29b are pierced into the fabric, both rotating shafts 29a, 29b are rotated in opposite directions with a predetermined torque, and the rotating torque and the restoring force of the fabric are balanced. That is, the separation distance between the tips of the rotating shafts 29a and 29b is detected by a rotary encoder (not shown). CPU that receives this elongated length detection output as input
Reference numeral 25 controls the rotation of the motor 7 so as to correct the scraping amount of the dough pressing rotary body 3u in the same manner as described above.
第１の実施例における針数データと伸び長さデ
ータとは、布送り方向における縫針２の位置とリ
ニアセンサ１２との距離を考慮してリニアセンサ
１２に位置する生地部分に対応する伸び長さが読
み出されるように記憶し、又第２の実施例におい
ても、測定部材２８ａ，２８ｂとリニアセンサ１
２との距離を考慮して測定部材２８ａ，２８ｂ上
にあつた生地がリニアセンサ１２上に移動したと
きに生地圧接回転体３ｕ，３ｄを制御するように
タイミング設定してある。 The stitch count data and elongation length data in the first embodiment are the elongation length corresponding to the portion of the fabric located at the linear sensor 12, taking into consideration the distance between the position of the sewing needle 2 in the cloth feeding direction and the linear sensor 12. Also, in the second embodiment, the measuring members 28a, 28b and the linear sensor 1
The timing is set so that when the fabric on the measuring members 28a, 28b moves onto the linear sensor 12, the fabric pressing rotary bodies 3u, 3d are controlled in consideration of the distance from the measuring members 28a, 28b.
又上記実施例では生地圧接回転体３ｕ，３ｄの
回転量を補正したが、リニアセンサ１２の出力を
補正するようにしても良い。 Further, in the above embodiment, the amount of rotation of the cloth pressing rotating bodies 3u, 3d is corrected, but the output of the linear sensor 12 may be corrected.
上記のように本発明の縫代制御装置においては
生地の伸び率、縫い目方向と織り目等の関係によ
つて見掛けの生地端ずれ量を補正する事が出来る
ので、所定通りの縫い目線位置を保つ事ができ、
縫製品質を向上することが出来る。
As described above, in the seam allowance control device of the present invention, the apparent amount of fabric edge deviation can be corrected based on the elongation rate of the fabric, the relationship between the seam direction and weave, etc., so that the seam line position can be maintained as specified. I can do things,
Sewing quality can be improved.
第１図は本発明の縫代制御装置に適用する生地
の説明図、第２図は本発明の縫代制御装置のブロ
ツク線図、第３図は第２実施例を説明する平面
図、第４図は第２実施例のブロツク線図、第５図
ａ，ｂは本発明にも利用する従来の縫代制御装置
の正面図及び側面図、第６図，第７図は生地の伸
びを示す作動説明図である。
１……本縫いミシン、２……縫針、３ｕ，３ｄ
……生地圧接回転体、４ｕ−１，４ｄ−１……発
光体、５……傘歯車、６……伝達シヤフト、７…
…モータ、８……上下生地分離板、９……押え
足、１０……生地、１０ｕ，１０ｄ……上下生
地、１１……生地送り歯、１２……リニアセン
サ、１３……生地の側端、１４……距離、１５…
…縫い目線、２１……キーボード入力手段、２２
……増幅器、２３……Ａ／Ｄ変換器、２４……メ
モリ、２５……CPU、２６……カウンタ、２７
……ドライバ、２８ａ，２８ｂ……測定部材。
FIG. 1 is an explanatory diagram of a fabric applied to the seam allowance control device of the present invention, FIG. 2 is a block diagram of the seam allowance control device of the present invention, and FIG. 3 is a plan view illustrating a second embodiment. 4 is a block diagram of the second embodiment, FIGS. 5a and 5b are front and side views of a conventional seam allowance control device also used in the present invention, and FIGS. 6 and 7 are diagrams showing the elongation of the fabric. FIG. 1... Lockstitch sewing machine, 2... Sewing needle, 3u, 3d
... Cloth pressure contact rotating body, 4u-1, 4d-1 ... Light emitting body, 5 ... Bevel gear, 6 ... Transmission shaft, 7 ...
...Motor, 8...Upper and lower dough separation plate, 9...Presser foot, 10...Dough, 10u, 10d...Upper and lower dough, 11...Dough feed dog, 12...Linear sensor, 13...Side edge of dough , 14...distance, 15...
...Seam line, 21...Keyboard input means, 22
...Amplifier, 23...A/D converter, 24...Memory, 25...CPU, 26...Counter, 27
...Driver, 28a, 28b...Measurement member.
Claims (1)
方向に送る布送り手段と、 布送り手段よりも布送り方向手前において生地
端位置と縫い目線間の距離を光学的に検出する手
段と、 布送り手段よりも布送り方向手前において布に
接し距離検出手段の出力に応じて上記距離が一定
になるよう布送り方向との交叉方向に生地の掻き
込み、掻き出し動作を行う布制御手段、 とを有し、縫い目形成方向に対して生地の伸び長
さがそれぞれ異なる複数の区間を有する生地端縁
に沿い縫い目を形成する縫代制御装置において、 上記各区間の伸び長さを測定する手段と、 予め設定された布送りピツチに基づいて各区間
の針数を演算する手段と、 上記測定値および上記計算された針数を記憶す
る手段と、 縫い針数を計数する手段と、 上記計数値に対応して記憶された測定値を読み
だす手段と、 読みだされた測定値に基づいて伸び長さに反比
例した掻き出しまたは掻き込み量となるように設
定する手段、 とを備えた縫代制御装置。 ２ 布送り歯と布押さえ足との協働により布を一
方向に送る布送り手段と、 布送り手段よりも布送り方向手前において生地
端位置と縫い目線間の距離を光学的に検出する手
段と、 布送り手段よりも布送り方向手前において布に
接し距離検出手段の出力に応じて上記距離が一定
となるよう布送り方向との交叉方向に生地の掻き
込み、掻き出し動作を行う布制御手段、 とを有し、縫い目形成方向に対して生地の伸び長
さがそれぞれ異なる複数の区間を有する生地端縁
に沿い縫い目を形成する縫代制御装置において、 布制御手段よりも布送り方向手前に配置し上記
各区間の伸び長さを測定する手段と、 縫い目形成毎に上記測定値を読み込む手段と、 読み込まれた測定値に基づいて伸び長さに反比
例した掻き出しまたは掻き込み量となるように設
定する手段、 とを備えた縫代制御装置。[Scope of Claims] 1. A cloth feeding means that feeds the cloth in one direction by cooperation of a cloth feeding tooth and a cloth presser foot, and a distance between the cloth edge position and the seam line before the cloth feeding means in the cloth feeding direction. an optical detection means, and a means for scraping and scraping the cloth in a direction crossing the cloth feeding direction so that the distance is constant according to the output of the distance detecting means, which contacts the cloth at a position before the cloth feeding means in the cloth feeding direction. A seam allowance control device for forming a seam along an edge of a fabric having a plurality of sections each having a different elongation length of the fabric in the seam forming direction, comprising: means for measuring elongation length; means for calculating the number of stitches in each section based on a preset cloth feed pitch; means for storing the measured value and the calculated number of stitches; and means for calculating the number of stitches to be sewn. A means for counting, a means for reading a stored measured value corresponding to the counted value, and a means for setting the amount of scraping or scraping to be inversely proportional to the elongation length based on the read measured value. , and a seam allowance control device. 2. A cloth feeding means that feeds the cloth in one direction through cooperation between the cloth feeding teeth and the cloth presser foot, and a means for optically detecting the distance between the cloth edge position and the seam line before the cloth feeding means in the cloth feeding direction. and a cloth control means that contacts the cloth in front of the cloth feeding means in the cloth feeding direction and performs scraping and scraping operations of the cloth in a direction crossing the cloth feeding direction so that the distance is constant according to the output of the distance detection means. , and which forms a seam along the edge of a fabric having a plurality of sections in which the stretch length of the fabric is different in the seam forming direction, the seam allowance control device has a seam allowance control device that forms a seam along the edge of the fabric, which has a plurality of sections in which the stretching length of the fabric is different in the seam forming direction. a means for arranging and measuring the elongation length of each section; a means for reading the measured value each time a seam is formed; A seam allowance control device comprising: means for setting;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18026889A JPH0345292A (en) | 1989-07-14 | 1989-07-14 | Seam margin controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18026889A JPH0345292A (en) | 1989-07-14 | 1989-07-14 | Seam margin controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0345292A JPH0345292A (en) | 1991-02-26 |
| JPH0422115B2 true JPH0422115B2 (en) | 1992-04-15 |
Family
ID=16080265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18026889A Granted JPH0345292A (en) | 1989-07-14 | 1989-07-14 | Seam margin controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0345292A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2550042B1 (en) * | 1983-07-29 | 1985-11-22 | Ctm | MODULAR CONNECTION DEVICE FOR TELEPHONE DISTRIBUTOR |
| JPS6042744A (en) * | 1983-08-18 | 1985-03-07 | Olympus Optical Co Ltd | Endoscope data photographically inserting device |
-
1989
- 1989-07-14 JP JP18026889A patent/JPH0345292A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0345292A (en) | 1991-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |