JPH09135981A - Sewing machine - Google Patents
Sewing machineInfo
- Publication number
- JPH09135981A JPH09135981A JP30031295A JP30031295A JPH09135981A JP H09135981 A JPH09135981 A JP H09135981A JP 30031295 A JP30031295 A JP 30031295A JP 30031295 A JP30031295 A JP 30031295A JP H09135981 A JPH09135981 A JP H09135981A
- Authority
- JP
- Japan
- Prior art keywords
- sewing
- needle
- drive mechanism
- center line
- 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.)
- Pending
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Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、縫製対象物と縫い
針とを相対移動させる機構を備えたミシンに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine having a mechanism for relatively moving a sewing object and a sewing needle.
【0002】[0002]
【従来の技術】この種のミシンとして、図5(b)に示
すように刺繍枠1をアーム2の長手方向(Y軸方向)及
びこれと直交する方向(X軸方向)に運動させて刺繍枠
1に保持された不図示の加工布に所定の模様を縫製する
ものが知られている。2. Description of the Related Art As a sewing machine of this type, as shown in FIG. 5B, the embroidery frame 1 is moved in the longitudinal direction of the arm 2 (Y-axis direction) and in the direction orthogonal thereto (X-axis direction). It is known to sew a predetermined pattern on a work cloth (not shown) held by the frame 1.
【0003】[0003]
【発明が解決しようとする課題】上述した従来のミシン
では、刺繍枠1のY軸方向の移動範囲が支柱3で制限さ
れるため、縫い針4から支柱3までの距離に等しい直径
D0の範囲内でしか模様が縫製できない。なお、特開平
5−123464号公報、特開平3−193089号公
報等には、前記の二方向の直線運動に加えて、刺繍枠を
縫い針の中心線と平行な軸線の回りに回転可能としたミ
シンが記載されている。しかしながら、これらのミシン
は二つの直線運動に回転運動を追加して加工布と縫い針
との相対位置を修正しているに過ぎない。このような駆
動制御を行う限りY軸方向の移動量の制限から縫製範囲
が限定され、上述した問題点は解決されない。In the above-mentioned conventional sewing machine, since the moving range of the embroidery frame 1 in the Y-axis direction is limited by the support columns 3, the range of the diameter D0 equal to the distance from the sewing needle 4 to the support columns 3 is obtained. The pattern can be sewn only inside. In addition to Japanese Unexamined Patent Publication (Kokai) No. 5-123464 and Japanese Unexamined Patent Publication (Kokai) No. 3-1993089, it is possible to rotate the embroidery frame around an axis parallel to the center line of the sewing needle in addition to the linear movement in the two directions. Sewing machine is described. However, these sewing machines only add rotational movement to two linear movements to correct the relative position between the work cloth and the sewing needle. As long as such drive control is performed, the sewing range is limited due to the limitation of the movement amount in the Y-axis direction, and the above-mentioned problems cannot be solved.
【0004】本発明は、従来よりも縫製範囲を拡大でき
るミシンを提供することを目的とする。An object of the present invention is to provide a sewing machine capable of expanding the sewing range as compared with the conventional one.
【0005】[0005]
【課題を解決するための手段】請求項1の発明では、縫
い針をその中心線の方向に往復運動させて縫製対象物に
縫い目を形成する縫製機構と、前記縫い針の前記中心線
と平行な回転軸線を中心として前記縫製対象物と前記縫
製機構とを相対的に回転運動させる回転駆動機構と、前
記回転軸線が前記縫い針の前記中心線と直交する単一の
直線上を移動するように、前記縫製対象物と前記縫製機
構とを相対的に直線運動させる直線駆動機構と、前記回
転運動と前記直線運動との合成のみによって前記縫い針
が前記縫製対象物上の現在位置から目的位置へと相対移
動するように、前記回転駆動機構及び前記直線駆動機構
の動作を制御する制御装置とを具備したミシンにより上
述した目的を達成する。According to a first aspect of the present invention, a sewing mechanism that reciprocates a sewing needle in the direction of its center line to form a stitch on a sewing object, and a sewing mechanism that is parallel to the center line of the sewing needle. A rotation drive mechanism for relatively rotating the sewing object and the sewing mechanism about a rotation axis, and the rotation axis moves on a single straight line orthogonal to the center line of the sewing needle. A linear drive mechanism that relatively linearly moves the sewing object and the sewing mechanism, and the sewing needle moves from a current position on the sewing object to a target position only by combining the rotary motion and the linear motion. The above-described object is achieved by a sewing machine including a controller that controls the operations of the rotary drive mechanism and the linear drive mechanism so as to move relative to each other.
【0006】請求項2の発明では、縫い針の中心線と平
行な回転軸線の回りに回転可能に支持された縫製対象物
の保持部材と、前記回転軸線を中心として前記保持部材
を回転運動させる回転駆動機構と、前記縫い針の中心線
と直交する単一の直線上を前記回転軸線が移動するよう
に前記保持部材を直線運動させる直線駆動機構と、前記
回転運動と前記直線運動との合成のみによって前記縫い
針が前記縫製対象物上の現在位置から目的位置へと相対
移動するように、前記回転駆動機構及び前記直線駆動機
構の動作を制御する制御装置と、を具備したミシンによ
り上述した目的を達成する。According to the second aspect of the present invention, the holding member for the sewing object rotatably supported about the rotation axis parallel to the center line of the sewing needle, and the holding member rotating about the rotation axis. A combination of a rotary drive mechanism, a linear drive mechanism that linearly moves the holding member so that the rotary axis moves on a single straight line orthogonal to the center line of the sewing needle, and the rotary motion and the linear motion. The sewing machine is provided with a controller that controls the operations of the rotary drive mechanism and the linear drive mechanism so that the sewing needle relatively moves from the current position on the sewing object to the target position only by the sewing machine. Achieve the purpose.
【0007】以上の発明によれば、縫製対象物の側方に
支柱のような構造物があっても、それを避けるように直
線運動の方向を設定すれば縫製範囲の制限が緩和され
る。請求項3の発明は、請求項1又は2のミシンにおい
て、一端側で前記縫い針を保持するアーム及び該アーム
の他端側を前記中心線と平行な方向から支持する支柱を
具備し、前記アームの前記一端と前記他端とを結ぶ方向
と前記直線駆動機構による前記直線運動の方向とが直交
することを特徴とするものである。この発明によれば、
縫製対象物がアームの長手方向に移動しないので、縫い
針から支柱までの寸法のほぼ2倍程度の幅に渡って縫製
範囲を確保できる。According to the above invention, even if there is a structure such as a strut on the side of the sewing object, the restriction of the sewing range can be alleviated by setting the direction of the linear movement so as to avoid it. According to a third aspect of the present invention, in the sewing machine according to the first or second aspect, an arm that holds the sewing needle at one end side and a column that supports the other end side of the arm from a direction parallel to the center line are provided. It is characterized in that the direction connecting the one end and the other end of the arm is orthogonal to the direction of the linear movement by the linear drive mechanism. According to the invention,
Since the sewing object does not move in the longitudinal direction of the arm, the sewing range can be secured over a width approximately twice the size from the sewing needle to the support.
【0008】請求項4の発明は、請求項1又は2のミシ
ンにおいて、前記縫製対象物上のn回目(但しnは自然
数)の針落ち点からn+1回目の針落ち点へ前記縫い針
が移動する間に、前記n回目の針落ち点と前記縫い針の
中心線との距離が前記二つの針落ち点間の直線距離を超
えないように、前記制御装置が前記回転駆動機構及び前
記直線駆動機構の動作を制御するものである。この発明
によれば、縫製対象物上の一対の針落ち点間を縫い針が
相対的に移動する間に、それらの針落ち点間の距離を越
えて縫い針から糸が引き出されるおそれがない。According to a fourth aspect of the present invention, in the sewing machine according to the first or second aspect, the sewing needle is moved from the n-th (where n is a natural number) needle drop point on the sewing object to the (n + 1) -th needle drop point. In the meantime, the controller controls the rotary drive mechanism and the linear drive so that the distance between the n-th needle drop point and the center line of the sewing needle does not exceed the linear distance between the two needle drop points. It controls the operation of the mechanism. According to the present invention, while the sewing needle relatively moves between the pair of needle drop points on the sewing object, there is no possibility that the thread is pulled out from the sewing needle beyond the distance between the needle drop points. .
【0009】[0009]
【発明の実施の形態】図1〜図5を参照して本発明の一
実施形態を説明する。なお、図5(b)に示す従来例と
の共通部分には同一符号を付して説明を省略する。図1
は本実施形態に係るミシンの概略構成を示し、10は縫
製機構、20は回転駆動機構、30は直線駆動機構であ
る。縫製機構10は、針駆動モータ11と、針駆動モー
タ11の回転運動を縫い針4の中心線方向(図の上下方
向)の往復運動に変換する変換機構(不図示)とを有す
る。変換機構にはカムやリンク等を利用した周知の種々
の機構を用いてよく、ここでは詳細を省略する。また、
縫製機構10は、縫い針4による上糸の供給に連係して
下糸を供給する回転釜(不図示)も備えている。回転釜
は縫い針4の直下に常に保持される。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. Note that the same parts as those of the conventional example shown in FIG. FIG.
Shows a schematic configuration of the sewing machine according to the present embodiment, 10 is a sewing mechanism, 20 is a rotary drive mechanism, and 30 is a linear drive mechanism. The sewing mechanism 10 has a needle drive motor 11 and a conversion mechanism (not shown) that converts the rotational movement of the needle drive motor 11 into a reciprocating movement of the sewing needle 4 in the direction of the center line (the vertical direction in the drawing). Various well-known mechanisms using cams, links, etc. may be used as the conversion mechanism, and details thereof will be omitted here. Also,
The sewing mechanism 10 also includes a rotary hook (not shown) that supplies the lower thread in association with the upper thread supplied by the sewing needle 4. The rotary hook is always held immediately below the sewing needle 4.
【0010】回転機構20は、枠回転モータ21の回転
運動をベルト22を介して従動プーリ23へ伝達し、そ
の従動プーリ23の回転運動を不図示のギア機構を介し
て刺繍枠1の外周のギア1aに伝達する。刺繍枠1は、
可動台31に回転軸線RCを中心として回転自在に支持
されている。従って、ギア1aへの回転伝達によって刺
繍枠1が回転軸線RCを中心に回転する。回転軸線RC
は縫い針4の中心線と平行であり、しかもアーム2の長
手方向(Y軸方向)に関して縫い針4と回転軸線RCと
は等しい位置にある。なお、ベルト22等の動力伝達手
段を介することなく、モータにて刺繍枠1を直接に回転
軸線RCの回りに駆動してもよい。モータ21、プーリ
23及びプーリ23からギア1aに至る動力伝達機構は
可動台31に支持させることができる。The rotary mechanism 20 transmits the rotary motion of the frame rotary motor 21 to the driven pulley 23 via the belt 22, and the rotary motion of the driven pulley 23 is transferred to the outer periphery of the embroidery frame 1 via a gear mechanism (not shown). It is transmitted to the gear 1a. The embroidery frame 1 is
It is rotatably supported on the movable base 31 about the rotation axis RC. Therefore, the transmission of the rotation to the gear 1a causes the embroidery frame 1 to rotate about the rotation axis RC. Rotation axis RC
Is parallel to the center line of the sewing needle 4, and the sewing needle 4 and the rotation axis RC are at the same position in the longitudinal direction (Y-axis direction) of the arm 2. The embroidery frame 1 may be directly driven around the rotation axis RC by a motor without passing through a power transmission means such as the belt 22. The motor 21, the pulley 23, and the power transmission mechanism from the pulley 23 to the gear 1a can be supported by the movable table 31.
【0011】直線運動機構30は、上述した可動台31
と、これをX軸方向に往復移動させる駆動部32とを有
する。なお、X軸方向は、縫い針4の中心線方向及びア
ーム2の長手方向の双方と直交する方向に相当する。駆
動部32は、X軸方向に延びるラック33と、このラッ
ク33に噛み合うピニオン34と、ピニオン34を回転
させるX軸駆動モータ35とを有する。ラック33はピ
ニオン34との噛み合いを制限しない位置で可動台31
と連結される。従って、X軸駆動モータ35の回転によ
り、可動台31はX軸方向に直線的に往復する。このと
き、回転軸線RCは縫い針4の中心線を通過してX軸方
向に延びる仮想的な直線L上を移動することになる。The linear movement mechanism 30 includes a movable base 31 described above.
And a drive unit 32 that reciprocates the same in the X-axis direction. The X-axis direction corresponds to a direction orthogonal to both the center line direction of the sewing needle 4 and the longitudinal direction of the arm 2. The drive unit 32 includes a rack 33 extending in the X-axis direction, a pinion 34 that meshes with the rack 33, and an X-axis drive motor 35 that rotates the pinion 34. The rack 33 moves the movable table 31 at a position where the meshing with the pinion 34 is not limited.
Connected with. Therefore, the movable base 31 linearly reciprocates in the X-axis direction by the rotation of the X-axis drive motor 35. At this time, the rotation axis RC moves on a virtual straight line L passing through the center line of the sewing needle 4 and extending in the X-axis direction.
【0012】図1のミシンの制御系の構成を図2に示
す。図において40は縫製作業に必要なミシン各部の動
作制御や演算を実行するCPUである。CPU40は、
例えばマイクロプロセッシングユニット及びその動作に
必要な周辺回路を組み合わせて構成される。CPU40
には、データ入力装置41及び記憶装置42が接続され
るとともに、上述したモータ11、21、35が縫い針
制御回路43、枠回転制御回路44及びX軸駆動制御回
路45を介して接続される。データ入力装置41からは
縫製データが入力され、そのデータは記憶装置42に適
宜記憶される。縫製データには、例えば加工布に対する
一針毎の針落ち点(縫い針4を加工布に対して貫通させ
る点)の位置、縫い糸の色や種類等を特定するための情
報が含まれる。刺繍データは、例えばROMカードや刺
繍データ作成装置として構成されたパーソナルコンピュ
ータから提供する。ユーザーから縫製作業の開始が指示
されると、CPU40は与えられた縫製データに基づい
て針駆動モータ11、枠回転モータ21及びX軸駆動モ
ータ35の制御信号を出力する。これらの制御信号が制
御回路43〜45にて各モータ11、21、35の駆動
信号に変換され、それらの駆動信号に従ってモータ1
1、21、35が所定方向へ所定量回転駆動される。こ
れにより、縫い針4が上下に往復運動するとともに、そ
の往復運動に同期した速度で加工布上を相対的に移動す
る。The structure of the control system of the sewing machine shown in FIG. 1 is shown in FIG. In the figure, reference numeral 40 denotes a CPU that executes operation control and calculation of each part of the sewing machine necessary for sewing work. The CPU 40
For example, it is configured by combining a microprocessing unit and peripheral circuits necessary for its operation. CPU40
Is connected to the data input device 41 and the storage device 42, and is also connected to the above-described motors 11, 21, and 35 via the sewing needle control circuit 43, the frame rotation control circuit 44, and the X-axis drive control circuit 45. . Sewing data is input from the data input device 41, and the data is appropriately stored in the storage device 42. The sewing data includes, for example, information for specifying the position of a needle drop point (point where the sewing needle 4 penetrates through the work cloth) for each needle on the work cloth, the color and type of the sewing thread, and the like. The embroidery data is provided from, for example, a ROM card or a personal computer configured as an embroidery data creation device. When the user gives an instruction to start the sewing work, the CPU 40 outputs control signals for the needle drive motor 11, the frame rotation motor 21, and the X-axis drive motor 35 based on the given sewing data. These control signals are converted into drive signals for the motors 11, 21, and 35 by the control circuits 43 to 45, and the motor 1 is driven according to these drive signals.
1, 21, 35 are rotationally driven in a predetermined direction by a predetermined amount. As a result, the sewing needle 4 reciprocates up and down and relatively moves on the work cloth at a speed synchronized with the reciprocating motion.
【0013】次に、図3を参照してCPU40による刺
繍枠1の駆動原理を説明する。なお、図3において左右
方向が図1のX軸方向に相当する。また、縫い針4の中
心線を通過してX軸方向に延びる直線を図1と同じく一
点鎖線Lで示した。図3(a)において刺繍枠1上の加
工布に対する現在の針落ち点(n回目の針落ち点)がP
a、次回の針落ち点(n+1回目の針落ち点)がPbと
仮定すると、その時点で縫い針4の位置NPは針落ち点
Paと一致する。この状態から目的とする縫製を施すに
は、次回の針落ち点Pbを位置NPまで移動させる必要
がある。このためには、刺繍枠1の回転軸線RCと次回
の針落ち点Pbとを結ぶ線分とX軸方向とがなす角度θ
だけ刺繍枠1を回転させて図3(b)に示すように縫い
針4の位置NPと針落ち点PbとをX軸方向に並べる。
そして、図3(c)に矢印で示したように刺繍枠1をX
軸方向に駆動して、針落ち点Pbを縫い針4の位置NP
まで移動させる。このように、回転軸線RCを中心とし
た刺繍枠1の回転運動と、X軸方向への直線運動との合
成のみで縫い針4を加工布上の現在位置から目的位置ま
で相対的に移動させる。なお、上記では回転運動と直線
運動とを分けて説明したが、実際の縫製時には回転運動
と直線運動とが並列的に実行される。なお、針落ち点P
a〜Pb間の距離dは、実際には刺繍枠1の直径D1
(図5(a)参照)に比して遥かに小さいが、図3では
理解の便宜のために誇張している。Next, the driving principle of the embroidery frame 1 by the CPU 40 will be described with reference to FIG. The left-right direction in FIG. 3 corresponds to the X-axis direction in FIG. A straight line passing through the center line of the sewing needle 4 and extending in the X-axis direction is shown by a chain line L as in FIG. In FIG. 3A, the current needle drop point (n-th needle drop point) for the work cloth on the embroidery frame 1 is P.
Assuming that a and the next needle drop point (n + 1st needle drop point) are Pb, the position NP of the sewing needle 4 at that time coincides with the needle drop point Pa. In order to perform the desired sewing from this state, it is necessary to move the next needle drop point Pb to the position NP. For this purpose, an angle θ formed by the line segment connecting the rotation axis RC of the embroidery frame 1 and the next needle drop point Pb and the X-axis direction
By rotating the embroidery frame 1 only, the position NP of the sewing needle 4 and the needle drop point Pb are aligned in the X-axis direction as shown in FIG. 3B.
Then, as shown by the arrow in FIG.
The needle drop point Pb is moved to the position NP of the sewing needle 4 by driving in the axial direction.
Move up to In this way, the sewing needle 4 is relatively moved from the current position on the work cloth to the target position only by combining the rotational movement of the embroidery frame 1 about the rotation axis RC and the linear movement in the X-axis direction. . Although the rotary motion and the linear motion are separately described above, the rotary motion and the linear motion are executed in parallel during actual sewing. The needle drop point P
The distance d between a and Pb is actually the diameter D1 of the embroidery frame 1.
Although it is much smaller than that shown in FIG. 5A, it is exaggerated in FIG. 3 for convenience of understanding.
【0014】ここで、図3(a)の状態で針落ち点Pa
からPbへ縫い針4を相対移動させるとき、針落ち点P
aと縫い針4との距離が上記の距離dを越えないよう
に、換言すれば、縫い針4の位置NPから半径d以内の
領域(ハッチング領域)Hから針落ち点Paが外れない
ように刺繍枠1の移動量を制限する。領域Hから針落ち
点Paが外れると、針落ち点Pa、Pb間に縫い糸を渡
すために必要な量以上に縫い針4から上糸が引き出さ
れ、余分な糸が針落ち点Pa、Pbの間で弛んで刺繍の
品質が劣化する。Here, in the state of FIG. 3A, the needle drop point Pa
When moving the sewing needle 4 from P to Pb relative to the needle drop point P
The distance between a and the sewing needle 4 does not exceed the above distance d, in other words, the needle drop point Pa does not deviate from the area (hatching area) H within the radius d from the position NP of the sewing needle 4. The movement amount of the embroidery frame 1 is limited. When the needle drop point Pa deviates from the area H, the upper thread is pulled out from the sewing needle 4 more than the amount necessary to pass the sewing thread between the needle drop points Pa and Pb, and the extra thread is removed from the needle drop points Pa and Pb. The quality of the embroidery deteriorates due to the looseness.
【0015】図3では針落ち点をPaからPbまで一回
で移動する場合を例に挙げたが、これらの点Pa〜Pb
の間に一直線かつ連続的に縫い目を形成する場合には、
図4(a)〜(e)に示したように、刺繍枠1を一定方
向(図示例では反時計方向)へ回転させ、それに合わせ
て点Pa、Pbを結ぶ線上から縫い針4の位置NPが外
れないようにかつ各針落ち点の間隔が等しくなるように
X軸方向の駆動を制御する。この場合、駆動速度を逐次
変化させる必要があるので、制御を簡略化するには回転
運動の角速度若しくは直線運動の速度のいずれかを一定
速度に設定するとよい。In FIG. 3, the case where the needle drop point is moved from Pa to Pb at one time is taken as an example, but these points Pa to Pb are taken.
If you want to form a straight and continuous seam between
As shown in FIGS. 4A to 4E, the embroidery frame 1 is rotated in a fixed direction (counterclockwise in the illustrated example), and the position NP of the sewing needle 4 is aligned with the line connecting the points Pa and Pb. Drive in the X-axis direction is controlled so that the needles do not come off and the intervals between the needle drop points are equal. In this case, since the drive speed needs to be changed sequentially, it is advisable to set either the angular speed of the rotary motion or the speed of the linear motion to a constant speed in order to simplify the control.
【0016】以上の実施形態によれば、アーム2の長手
方向と直交するX軸方向への直線運動と回転軸線RCを
中心とした回転運動との合成のみによって刺繍枠1と縫
い針4との間に所定の相対運動を与えるようにしたの
で、Y軸方向へ刺繍枠1を駆動する必要はない。従っ
て、図5(a)に示したように、刺繍枠1の縫製範囲の
直径D1を同図(b)に示す従来の直径D0のほぼ2倍
まで拡大できる。According to the above embodiment, the embroidery frame 1 and the sewing needle 4 are combined only by the combination of the linear motion of the arm 2 in the X-axis direction orthogonal to the longitudinal direction and the rotary motion about the rotation axis RC. Since a predetermined relative movement is given between them, it is not necessary to drive the embroidery frame 1 in the Y-axis direction. Therefore, as shown in FIG. 5A, the diameter D1 of the sewing range of the embroidery frame 1 can be increased to almost twice the diameter D0 of the conventional case shown in FIG.
【0017】以上の実施形態では、刺繍枠1が縫製対象
物の保持部材に、CPU40が制御装置に相当する。な
お、以上の実施形態では刺繍枠1に直線運動と回転運動
とを与えるようにしたが、いずれか一方又は両者の運動
を縫製機構、すなわち縫い針や回転釜に与えてもよい。In the above embodiment, the embroidery frame 1 corresponds to the holding member of the sewing object, and the CPU 40 corresponds to the control device. In the above embodiment, the embroidery frame 1 is given a linear motion and a rotary motion, but either one or both motions may be given to the sewing mechanism, that is, the sewing needle or the rotary hook.
【0018】[0018]
【発明の効果】以上説明したように、本発明によれば、
単一の直線運動と回転運動との合成のみによって縫い針
が縫製対象物上の現在位置から目的位置へと相対移動す
るようにしたので、支柱等の構造物に対して縫製対象物
を接近及び離間させる必要がなく、従来よりも広い範囲
に縫製を施すことができる。請求項3の発明では特に支
柱による縫製範囲の制限を緩和して従来よりもほぼ2倍
の直径の縫製領域を確保できる。請求項4の発明によれ
ば、縫製対象物の一対の針落ち点の間を縫い針が相対的
に移動する間に縫い糸が必要以上に引き出されるおそれ
がないから、針落ち点間の糸の弛みを防止して美麗な縫
製を確実に施すことができる。As described above, according to the present invention,
Since the sewing needle is moved relative to the target position from the current position on the sewing object only by combining the single linear movement and the rotational movement, the sewing object can be moved closer to the structure such as the strut. It is not necessary to separate them, and it is possible to sew a wider area than before. According to the third aspect of the present invention, in particular, the restriction on the sewing range due to the support columns is relaxed, and a sewing area having a diameter approximately twice that of the conventional case can be secured. According to the invention of claim 4, there is no possibility that the sewing thread is unnecessarily pulled out while the sewing needle relatively moves between the pair of needle drop points of the sewing object. Prevents loosening and ensures beautiful sewing.
【図1】本発明の実施の一形態に係るミシンの概略構成
を示す斜視図。FIG. 1 is a perspective view showing a schematic configuration of a sewing machine according to an embodiment of the present invention.
【図2】図1のミシンの制御系のブロック図。FIG. 2 is a block diagram of a control system of the sewing machine shown in FIG.
【図3】図1のミシンによる刺繍枠の駆動原理を説明す
るための図。FIG. 3 is a diagram for explaining a driving principle of an embroidery frame by the sewing machine of FIG.
【図4】図1のミシンにより一方向に連続した縫い目を
加工布に形成する際の刺繍枠の動作を示す図。FIG. 4 is a diagram showing the operation of the embroidery frame when forming continuous stitches in one direction on the work cloth by the sewing machine of FIG. 1.
【図5】ミシンの縫製範囲を対比するための図で、
(a)は本発明のミシンによる縫製範囲を、(b)は従
来のミシンによる縫製範囲をそれぞれ示す。FIG. 5 is a diagram for comparing sewing ranges of sewing machines,
(A) shows the sewing range by the sewing machine of the present invention, and (b) shows the sewing range by the conventional sewing machine.
1…刺繍枠 2…アーム 3…支柱 4…縫い針 10…縫製機構 20…回転駆動機構 30…直線駆動機構 40…CPU NP…縫い針の位置 Pa、Pb…針落ち点 1 ... Embroidery frame 2 ... Arm 3 ... Strut 4 ... Sewing needle 10 ... Sewing mechanism 20 ... Rotation drive mechanism 30 ... Linear drive mechanism 40 ... CPU NP ... Sewing needle position Pa, Pb ... Needle drop point
Claims (4)
せて縫製対象物に縫い目を形成する縫製機構と、 前記縫い針の前記中心線と平行な回転軸線を中心として
前記縫製対象物と前記縫製機構とを相対的に回転運動さ
せる回転駆動機構と、 前記回転軸線が前記縫い針の前記中心線と直交する単一
の直線上を移動するように、前記縫製対象物と前記縫製
機構とを相対的に直線運動させる直線駆動機構と、 前記回転運動と前記直線運動との合成のみによって前記
縫い針が前記縫製対象物上の現在位置から目的位置へと
相対移動するように、前記回転駆動機構及び前記直線駆
動機構の動作を制御する制御装置と、を具備したことを
特徴とするミシン。1. A sewing mechanism that reciprocates a sewing needle in the direction of its center line to form a stitch on a sewing object; and a sewing object about a rotation axis parallel to the center line of the sewing needle. A rotation drive mechanism that relatively rotationally moves the sewing mechanism, and the sewing target and the sewing mechanism such that the rotation axis moves on a single straight line orthogonal to the center line of the sewing needle. A linear drive mechanism for relatively linearly moving the sewing needle, and the rotary drive so that the sewing needle relatively moves from a current position on the sewing object to a target position only by combining the rotational motion and the linear motion. A sewing machine comprising a mechanism and a control device for controlling the operation of the linear drive mechanism.
に回転可能に支持された縫製対象物の保持部材と、 前記回転軸線を中心として前記保持部材を回転運動させ
る回転駆動機構と、 前記縫い針の中心線と直交する単一の直線上を前記回転
軸線が移動するように前記保持部材を直線運動させる直
線駆動機構と、 前記回転運動と前記直線運動との合成のみによって前記
縫い針が前記縫製対象物上の現在位置から目的位置へと
相対移動するように、前記回転駆動機構及び前記直線駆
動機構の動作を制御する制御装置と、を具備したことを
特徴とするミシン。2. A holding member for a sewing object rotatably supported around a rotation axis parallel to a center line of a sewing needle, and a rotation drive mechanism for rotating the holding member about the rotation axis. A linear drive mechanism that linearly moves the holding member so that the rotation axis moves on a single straight line orthogonal to the center line of the sewing needle; and the sewing needle only by combining the rotational movement and the linear movement. A sewing machine which controls the operations of the rotary drive mechanism and the linear drive mechanism so that the machine relatively moves from the current position to the target position on the sewing object.
び該アームの他端側を前記中心線と平行な方向から支持
する支柱を具備し、前記アームの前記一端と前記他端と
を結ぶ方向と前記直線駆動機構による前記直線運動の方
向とが直交していることを特徴とする請求項1又は2記
載のミシン。3. An arm for holding the sewing needle at one end side, and a column for supporting the other end side of the arm from a direction parallel to the center line, and connect the one end and the other end of the arm. The sewing machine according to claim 1 or 2, wherein the direction and the direction of the linear movement by the linear drive mechanism are orthogonal to each other.
然数)の針落ち点からn+1回目の針落ち点へ前記縫い
針が移動する間に、前記n回目の針落ち点と前記縫い針
の中心線との距離が前記二つの針落ち点間の直線距離を
超えないように、前記制御装置が前記回転駆動機構及び
前記直線駆動機構の動作を制御することを特徴とする請
求項1又は2記載のミシン。4. The n-th needle drop point and the sewing stitch while the sewing needle moves from the n-th needle drop point (where n is a natural number) on the sewing object to the (n + 1) -th needle drop point. 2. The control device controls the operations of the rotary drive mechanism and the linear drive mechanism so that the distance from the center line of the needle does not exceed the linear distance between the two needle drop points. Or the sewing machine described in 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30031295A JPH09135981A (en) | 1995-11-17 | 1995-11-17 | Sewing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30031295A JPH09135981A (en) | 1995-11-17 | 1995-11-17 | Sewing machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09135981A true JPH09135981A (en) | 1997-05-27 |
Family
ID=17883270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30031295A Pending JPH09135981A (en) | 1995-11-17 | 1995-11-17 | Sewing machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09135981A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020127691A (en) * | 2019-02-12 | 2020-08-27 | トヨタ紡織株式会社 | Workpiece feeding controller for sewing machine |
JP2020127690A (en) * | 2019-02-12 | 2020-08-27 | トヨタ紡織株式会社 | Workpiece feeding controller for sewing machine |
-
1995
- 1995-11-17 JP JP30031295A patent/JPH09135981A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020127691A (en) * | 2019-02-12 | 2020-08-27 | トヨタ紡織株式会社 | Workpiece feeding controller for sewing machine |
JP2020127690A (en) * | 2019-02-12 | 2020-08-27 | トヨタ紡織株式会社 | Workpiece feeding controller for sewing machine |
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