JPS6112714B2 - - Google Patents
Info
- Publication number
- JPS6112714B2 JPS6112714B2 JP22859482A JP22859482A JPS6112714B2 JP S6112714 B2 JPS6112714 B2 JP S6112714B2 JP 22859482 A JP22859482 A JP 22859482A JP 22859482 A JP22859482 A JP 22859482A JP S6112714 B2 JPS6112714 B2 JP S6112714B2
- Authority
- JP
- Japan
- Prior art keywords
- embroidery frame
- movement
- detection
- needle
- moves
- 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
- 238000001514 detection method Methods 0.000 claims description 30
- 238000009958 sewing Methods 0.000 claims description 11
- 239000004744 fabric Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Automatic Embroidering For Embroidered Or Tufted Products (AREA)
- Sewing Machines And Sewing (AREA)
Description
【発明の詳細な説明】
この発明は、フロツピーデイスク等の記憶手段
に記憶した刺繍枠の移動量データに基づき、ステ
ツピングモータ等の駆動手段により刺繍枠を移動
して縫目を形成する刺繍縫いミシンに関し、特
に、縫目形成の前に刺繍枠を針落ち点に対応する
所定の基準位置に設定するようにした刺繍縫いミ
シンの刺繍枠位置決め装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides embroidery in which a stitch is formed by moving an embroidery frame using a driving means such as a stepping motor based on movement amount data of the embroidery frame stored in a storage means such as a floppy disk. The present invention relates to a sewing machine, and particularly to an embroidery frame positioning device for an embroidery sewing machine that sets the embroidery frame at a predetermined reference position corresponding to a needle drop point before stitch formation.
従来、上記した刺繍縫いミシンにおいては、刺
繍枠の枠内に布を張設し、その枠内で針を上下動
して刺繍縫いを行なうようにしていたが、移動量
データに対する刺繍枠の移動位置を確定するため
にその移動開始前に所定の初期位置（例えば枠内
の中心点）に針を対向するように刺繍枠を移動す
る必要があり、従来においてはこの設定を手動操
作により行つていたため、操作に手間を要し、作
業能率が低下するという欠点があつた。 Conventionally, in the above-mentioned embroidery sewing machine, the fabric was stretched within the frame of the embroidery frame, and the needle was moved up and down within the frame to perform embroidery stitches. In order to determine the position, it is necessary to move the embroidery frame so that the needle faces a predetermined initial position (for example, the center point within the frame) before starting the movement. Conventionally, this setting was done manually. Therefore, the disadvantage was that it required time and effort to operate and reduced work efficiency.
この発明は、上記の欠点に鑑みてなされたもの
であり、刺繍枠を検知し、針落ち点に対して自動
的に刺繍枠を基準位置に設定するようにした装置
を提供することを目的とするものである。 The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a device that detects an embroidery frame and automatically sets the embroidery frame at a reference position relative to the needle drop point. It is something to do.
以下、図面によりこの発明の実施例を説明する
と、１は平坦な上面１ａをもつテーブルであり、
上面１ａと同一平面上にベツド面２ａが位置する
ようにミシン２を載置する。ミシン２は主軸（図
示しない）に連結した駆動モータＭに連動して針
３を上下動する。４はテーブル１の上面１ａ上に
配置した支持枠であり、布を張設して保持する円
形の刺繍枠５を着脱可能に枠内に支持し、テーブ
ル１の下方に配置した一対のステツピングモータ
XSTM，YSTMに連結してミシン主軸の軸線方向
に沿うＹ方向の直交方向に沿うＸ方向との合成方
向へ移動可能とする。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a table having a flat upper surface 1a;
The sewing machine 2 is placed so that the bed surface 2a is located on the same plane as the upper surface 1a. The sewing machine 2 moves the needle 3 up and down in conjunction with a drive motor M connected to a main shaft (not shown). Reference numeral 4 denotes a support frame arranged on the upper surface 1a of the table 1, which removably supports a circular embroidery frame 5 holding cloth stretched thereon, and a pair of stepping pins arranged below the table 1. motor
It is connected to XSTM and YSTM to enable movement in the composite direction with the X direction, which is perpendicular to the Y direction along the axial direction of the main shaft of the sewing machine.
DSWは、刺繍枠５の検知手段であり、ミシン
２の機枠の下端に固定した支持体６の下端に、針
３を貫通可能とするように針３の上下動通路に対
向し且つ刺繍枠５と同一水平面上に配置した導電
性のリング７を固定し、リング７は支持体６を介
して後述する制御回路に電気的に接続する。リン
グ７の外周に対応して導線１０に接続した導電性
のリング８を可撓性の絶縁体（例えばゴム）より
なる連結体９によりリング７に支持して、リング
７とリング８とは常には離隔（第３図）して電気
的にに絶縁し、リング８が刺繍枠５に接触して押
圧されるとき、連結体９の弾性力に抗してリンン
グ８がリング７に接触し（第４図）電気的に導通
する。 The DSW is a detection means for the embroidery frame 5, and is placed at the lower end of a support 6 fixed to the lower end of the machine frame of the sewing machine 2, facing the vertical movement path of the needle 3 so that the needle 3 can pass through it, and the embroidery frame. A conductive ring 7 placed on the same horizontal plane as the ring 5 is fixed, and the ring 7 is electrically connected to a control circuit to be described later through a support 6. A conductive ring 8 connected to a conductive wire 10 corresponding to the outer circumference of the ring 7 is supported on the ring 7 by a connecting body 9 made of a flexible insulator (for example, rubber), so that the rings 7 and 8 are always connected. are separated (Fig. 3) and electrically insulated, and when the ring 8 contacts and is pressed against the embroidery frame 5, the ring 8 contacts the ring 7 against the elastic force of the connecting body 9 ( Figure 4) Electrically conductive.
次に、本発明の制御回路について説明する。第
５図において、CPUは演算・制御・入出力機能
をもつ中央処理装置、RAMは読み出し・書き込
み用の記憶回路、ROMはCPUのプログラム等を
記憶した読み出し専用の記憶回路、SSWは後述
する刺繍枠位置設定のための起動スイツチDSW
は前述した検知手段、DRはCPUの指令に基づい
てステツピングモータXSTM、YSTMを制御する
ための駆動回路、Ｉ／Ｏは入出力ポートである。 Next, the control circuit of the present invention will be explained. In Figure 5, the CPU is a central processing unit with calculation, control, and input/output functions, the RAM is a memory circuit for reading and writing, the ROM is a read-only memory circuit that stores CPU programs, etc., and the SSW is an embroidery unit that will be described later. Start switch DSW for setting frame position
is the aforementioned detection means, DR is a drive circuit for controlling the stepping motors XSTM and YSTM based on instructions from the CPU, and I/O is an input/output port.
次に、CPUの制御フローチヤートについて第
６図において説明すると、先ず起動スイツチ
SSWがオンか否かを判断し、オンであれば刺繍
枠（フロー中では「枠」と略記）５をＸ方向の一
方向（第１図＋Ｘ）に移動させる。次に、検知手
段DSWがオンか否かを判断し、オフ即ち検知手
段DSWが第３図の状態になれば、刺繍枠５を＋
Ｘ方向に移動し続け、また検知手段DSWがオ
ン、即ち第４図の状態になれば刺繍枠５の移動方
向を逆転してＸ方向（第１図−Ｘ方向）へ移動す
るとともに、ステツピングモータXSTMの駆動パ
ルスの加算を開始する。次に検知手段DSWを判
断し、オフであれば刺繍枠５の−Ｘ方向の移動及
び上記駆動パルスの加算を継続し、オンであれ
ば、その時点での駆動パルスの加算値LXから得
られる演算値LX／２に等しい駆動パルス分だけ
刺繍枠５を＋Ｘ方向に戻してステツピングモータ
XSTMを停止する。 Next, to explain the CPU control flowchart with reference to Figure 6, first the startup switch is
It is determined whether the SSW is on or not, and if it is on, the embroidery frame (abbreviated as "frame" in the flow) 5 is moved in one direction in the X direction (+X in FIG. 1). Next, it is determined whether the detection means DSW is on or not, and if it is off, that is, the detection means DSW is in the state shown in FIG.
If the embroidery frame 5 continues to move in the X direction, and the detection means DSW is turned on, that is, in the state shown in FIG. 4, the embroidery frame 5 reverses its moving direction and moves in the Start adding drive pulses for motor XSTM. Next, the detection means DSW is determined, and if it is off, the movement of the embroidery frame 5 in the -X direction and the addition of the drive pulses described above are continued, and if it is on, it is obtained from the added value LX of the drive pulses at that point. The stepping motor moves the embroidery frame 5 back in the +X direction by the drive pulse equal to the calculated value LX/2.
Stop XSTM.
続いて刺繍枠５を＋Ｙ方向（第１図参照）へ移
動して検知手段のDSWがオンか否かを判断し、
オフであれば刺繍枠５を＋Ｙ方向へ移動し続け、
また、オフであれば刺繍枠５の移動を−Ｙ方向
（第１図参照）へ逆転するとともに、ステツピン
グモータYSTMの駆動パルスの加算を開始する。
次に検知手段DSWを検知し、オフであれば刺繍
枠５の−Ｙ方向の移動及び上記駆動パルスの加算
を継続し、オンであれば、その時点での駆動パル
スの加算値から得られる演算値LY／２に等しい
駆動パルス分だけ刺繍枠５を＋Ｙ方向に戻してス
テツピングモータYSTMを停止する。 Next, move the embroidery frame 5 in the +Y direction (see Figure 1) to determine whether or not the DSW of the detection means is on.
If it is off, continue moving the embroidery frame 5 in the +Y direction,
If it is off, the movement of the embroidery frame 5 is reversed in the -Y direction (see FIG. 1), and addition of drive pulses for the stepping motor YSTM is started.
Next, the detection means DSW is detected, and if it is off, it continues moving the embroidery frame 5 in the -Y direction and adding the drive pulses, and if it is on, it is calculated based on the added value of the drive pulses at that point. The embroidery frame 5 is returned in the +Y direction by a drive pulse equal to the value LY/2, and the stepping motor YSTM is stopped.
次に、第７Ａ〜７Ｆ図に基づきこの発明の作用
を説明する。尚、これらの図において、実際に移
動するのは針３でなく刺繍枠５だが、とくに説明
の便宜上刺繍枠５に対する針３の相対的な移動を
破線矢印で示してある。 Next, the operation of the present invention will be explained based on FIGS. 7A to 7F. In these figures, it is the embroidery frame 5, not the needle 3, that actually moves, but for the convenience of explanation, the movement of the needle 3 relative to the embroidery frame 5 is shown by broken line arrows.
先ず、針３をベツド面２ａから上昇した状態に
おいて、針落ち点が刺繍枠５内の任意の点に位置
するように支持枠４を移動しておく（第７Ａ
図）。こうして起動スイツチSSWを操作すると、
ステツピングモータXSTMが起動し、刺繍枠５が
＋Ｘ方向へ移動する。針３の周囲に嵌挿した検知
手段DSWが刺繍枠５の点Ｐ１に接触すると、検
知手段DSWがオンになるため、ステツピングモ
ータXSTMが逆転して刺繍枠５が−Ｘ方向へ移動
し始めるとともに、CPUによりステツピングモ
ータXSTMの駆動パルスの加算が開始される。 First, with the needle 3 raised from the bed surface 2a, move the support frame 4 so that the needle drop point is located at an arbitrary point within the embroidery frame 5 (see step 7A).
figure). When you operate the startup switch SSW in this way,
The stepping motor XSTM is activated and the embroidery frame 5 moves in the +X direction. When the detection means DSW fitted around the needle 3 contacts point P1 of the embroidery frame 5, the detection means DSW is turned on, so the stepping motor XSTM reverses and the embroidery frame 5 begins to move in the -X direction. At the same time, the CPU starts adding drive pulses for the stepping motor XSTM.
次に検知手段DSWが刺繍枠５の点Ｐ２（第７
Ｂ図）に接触してオンになると、そこまでの加算
値LXの値の1/2であるLX／２が演算され、LX／
２分だけ刺繍枠５が＋Ｘ方向へ戻されて、３が刺
繍枠５内におけるＸ方向の中心P3に位置するよう
になる。ここでステツピングモータXSTMが停止
したのちに、ステツピングモータYSTMが起動
し、刺繍枠５が＋Ｙ方向へ移動する次に検知手段
DSWが刺繍枠５の点Ｐ４に接触してオンになる
と、ステツピングモータYSTMが逆転して刺繍枠
５が−方向へ移動し始めるとともに、CPUによ
りステツピングモータYSTMの駆動パルスの加算
が開始される。次に検知手段DSWDが刺繍枠５の
点P5に接触してオンになると、そこまでの加算値
LYの値の1/2であるLY／２が演算され、LY／２
分だけ刺繍枠５が＋Ｙ方向へ戻されて、ステツピ
ングモータYSTMが停止し、このとき、針３は刺
繍枠５の中心点P6に設定されている。 Next, the detection means DSW detects the point P2 (the seventh point) on the embroidery frame 5.
When it comes into contact with (Figure B) and turns on, LX/2, which is 1/2 of the added value LX up to that point, is calculated, and LX/
The embroidery frame 5 is moved back in the +X direction by 2 minutes, and the embroidery frame 5 is now located at the center P3 in the X direction within the embroidery frame 5. After the stepping motor XSTM stops, the stepping motor YSTM starts and the embroidery frame 5 moves in the +Y direction.
When the DSW contacts point P4 of the embroidery frame 5 and turns on, the stepping motor YSTM reverses and the embroidery frame 5 begins to move in the negative direction, and the CPU starts adding drive pulses for the stepping motor YSTM. Ru. Next, when the detection means DSWD contacts point P5 of the embroidery frame 5 and turns on, the added value up to that point is
LY/2, which is 1/2 of the value of LY, is calculated, and LY/2
The embroidery frame 5 is moved back in the +Y direction by that amount, and the stepping motor YSTM is stopped. At this time, the needle 3 is set at the center point P6 of the embroidery frame 5.
次に、他の実施例について説明する。第８図
は、刺繍枠５に、Ｙ方向の中心点を示す目印５ａ
を設けたものであり、この場合には刺繍枠５を、
その目印５ａが針３に近接するように予め設定し
ておくことにより、第６図のフローにおけるＸ方
向のみの中心点設定により、刺繍枠５を針３がそ
の中心点に位置するようにすることができる。 Next, other embodiments will be described. FIG. 8 shows a mark 5a on the embroidery frame 5 indicating the center point in the Y direction.
In this case, the embroidery frame 5 is
By setting the mark 5a in advance so that it is close to the needle 3, by setting the center point only in the X direction in the flow shown in FIG. 6, the needle 3 can be positioned at the center point of the embroidery frame 5. be able to.
また、上記実施例では、刺繍枠５は真円型であ
るが、第９図に示すような楕円型の刺繍枠でもよ
く、より一般には刺繍枠はＸ軸及びＹ軸について
線対称であればよい。 Further, in the above embodiment, the embroidery frame 5 is a perfect circle, but it may be an elliptical embroidery frame as shown in FIG. good.
さらに、刺繍枠の検知手段は第３図に示した機
械的接点のものでなく、例えば刺繍枠のまわりに
磁石を配置してこの磁気をホール素子により感知
してもよい。また、検知手段DSWは必ずしも針
棒に近接して配置する必要はなく、例えば針棒か
ら一定の距離ｌcm離して配置しておき、針を刺繍
枠の中心に設定するときにこの距離ｌcmを移動補
償するようにしてもよい。 Furthermore, the embroidery frame detection means is not the mechanical contact shown in FIG. 3, but may instead be a magnet arranged around the embroidery frame and the magnetism detected by a Hall element. Furthermore, the detection means DSW does not necessarily need to be placed close to the needle bar; for example, it may be placed a certain distance lcm away from the needle bar, and moved by this distance lcm when setting the needle to the center of the embroidery frame. It may be arranged to compensate.
さらに、刺繍枠の駆動手段はステツピングモー
タでなくサーボモータでもよい。 Further, the driving means for the embroidery frame may be a servo motor instead of a stepping motor.
また、刺繍枠は、必ずしも針がその枠の中心に
来るように設定しなくともよく、必要に応じて任
意の位置に設定できる。これは、第６図にCPU
のフローチヤートの一部を変更することにより容
易に達成される。 Further, the embroidery frame does not necessarily have to be set so that the needle is located at the center of the frame, but can be set at any position as needed. This is shown in Figure 6.
This can be easily achieved by changing some parts of the flowchart.
以上のように、この発明によれば、刺繍枠を一
方向に沿つて正逆方向に移動し、針の通過経路の
周囲に配置した検知手段DSWの検知により刺繍
枠内部の距離を演算回路を用いて算出し、さらに
この算出値を２分してその２分した値に対応する
距離だけ刺繍枠を針に接触する位置から移動する
ことにより針を刺繍枠の中点に自動的に設定する
ようにしたので、従来のように、手動操作で刺繍
枠を設定する手間が省け、作業能率を向上する効
果がある。 As described above, according to the present invention, the embroidery frame is moved in the forward and reverse directions along one direction, and the distance inside the embroidery frame is detected by the detection means DSW disposed around the passage of the needle by the arithmetic circuit. The needle is automatically set at the midpoint of the embroidery frame by dividing this calculated value into two and moving the embroidery frame from the position where it touches the needle by a distance corresponding to the divided value. This eliminates the need to manually set the embroidery frame, which is required in the past, and has the effect of improving work efficiency.
第１図は、刺繍縫いミシンの斜視図、第２，３
図は針に対する検知手段DSWの配置状態を示す
図、第４図は検知手段DSWによる刺繍枠の検知
状態を示す図、第５図は制御回路のブロツク図、
第６図はCPUの制御フローチヤート、第７Ａ〜
７Ｆ図は刺繍枠の中点検知動作における針位置の
相対的移動を示す推移図、第８図は本発明の他の
実施例を示す図、第９図は真円以外の形状の刺繍
枠を示す図である。
１……テーブル、２……ミシン、３……針、４
……支持枠、XSTM，YSTM……駆動手段（ステ
ツピングモータ）、DSW……検知手段、CPU……
制御回路。
Figure 1 is a perspective view of the embroidery sewing machine, Figures 2 and 3 are
FIG. 4 is a diagram showing the arrangement of the detection means DSW with respect to the needle, FIG. 4 is a diagram showing the detection state of the embroidery frame by the detection means DSW, and FIG. 5 is a block diagram of the control circuit.
Figure 6 is a CPU control flowchart, 7A~
Figure 7F is a transition diagram showing the relative movement of the needle position during the middle point detection operation of the embroidery frame, Figure 8 is a diagram showing another embodiment of the present invention, and Figure 9 is a diagram showing the relative movement of the needle position in the middle point detection operation of the embroidery frame. FIG. 1...Table, 2...Sewing machine, 3...Needle, 4
...Support frame, XSTM, YSTM...Drive means (stepping motor), DSW...Detection means, CPU...
control circuit.
Claims (1)
る針をもつミシンと、 テーブル上面に沿う一直線に平行するＸ方向及
ぎＸ方向に直交するＹ方向に移動可能にテーブル
上に支持し内部に水平に布を張設可能とした刺繍
枠と、 電気的制御により駆動・停止し刺繍枠をＸ方向
及びＹ方向のそれぞれの正または逆方向に各別に
移動・停止可能とした駆動手段XSTM，YSTM
と、 刺繍枠の移動データに基づき駆動手段を駆動す
る駆動回路とを有する刺繍縫いミシンにおいて、
針に対し刺繍枠が相対に近接するのを検知して検
知信号を発生する検知手段と、 駆動手段の駆動に基づいて刺繍枠の移動量を検
出しその移動量に対応して異なる移動量信号を発
生する検出回路と、 操作による信号により作用し、刺繍枠をＸまた
はＹ方向の正または逆方向の一方に移動し、検知
信号の発生に関連して前記とは逆の他方に刺繍枠
を移動し、その後の検知信号の発生に関連して前
記他方移動を停止する第一の制御回路と、 第一の制御回路に基づく前記両検知信号の発生
間における検出回路の移動量信号に基づいて刺繍
枠を前記両検知信号発生間の移動経路上の中間に
ある所定位置に位置するように所定位置までの移
動量を算出し駆動回路を作用する第二の制御回
路、 とを備えた刺繍縫いミシンの刺繍枠位置決め装
置。[Claims] 1. A sewing machine having a needle that is placed on a table and moves up and down in conjunction with a main shaft, and that is movable in the X direction parallel to a straight line along the top surface of the table and in the Y direction perpendicular to the X direction. The embroidery frame is supported on a table and allows fabric to be stretched horizontally inside, and the embroidery frame is driven and stopped by electrical control, allowing the embroidery frame to be moved and stopped separately in the forward or reverse directions of the X and Y directions. Drive means XSTM, YSTM
and a drive circuit that drives a drive means based on movement data of an embroidery frame,
A detection means that detects the relative proximity of the embroidery frame to the needle and generates a detection signal, and a detection means that detects the amount of movement of the embroidery frame based on the driving of the drive means and generates a different movement amount signal corresponding to the amount of movement. a detection circuit that operates according to a signal from an operation, moves the embroidery frame in either the forward or reverse direction of the X or Y direction, and moves the embroidery frame in the opposite direction in relation to the generation of the detection signal; a first control circuit that moves and then stops the other movement in relation to the generation of a subsequent detection signal; and a movement amount signal of the detection circuit between the generation of both detection signals based on the first control circuit. A second control circuit that calculates the amount of movement to a predetermined position and operates a drive circuit so that the embroidery frame is located at a predetermined position midway on the movement path between the two detection signals. Sewing machine embroidery frame positioning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22859482A JPS59125594A (en) | 1982-12-29 | 1982-12-29 | Apparatus for determining embroidering frame of embroideringsewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22859482A JPS59125594A (en) | 1982-12-29 | 1982-12-29 | Apparatus for determining embroidering frame of embroideringsewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59125594A JPS59125594A (en) | 1984-07-19 |
| JPS6112714B2 true JPS6112714B2 (en) | 1986-04-09 |
Family
ID=16878798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22859482A Granted JPS59125594A (en) | 1982-12-29 | 1982-12-29 | Apparatus for determining embroidering frame of embroideringsewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59125594A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH069922U (en) * | 1992-07-15 | 1994-02-08 | 大宝工業株式会社 | Synthetic resin injection mold runner lock pin |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4939302B2 (en) * | 2007-05-18 | 2012-05-23 | 東京モノレール株式会社 | Bridge superstructure and construction method of bridge superstructure |
-
1982
- 1982-12-29 JP JP22859482A patent/JPS59125594A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH069922U (en) * | 1992-07-15 | 1994-02-08 | 大宝工業株式会社 | Synthetic resin injection mold runner lock pin |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59125594A (en) | 1984-07-19 |
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