JPH04135280U - sewing machine - Google Patents

sewing machine

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Publication number
JPH04135280U
JPH04135280U JP4307591U JP4307591U JPH04135280U JP H04135280 U JPH04135280 U JP H04135280U JP 4307591 U JP4307591 U JP 4307591U JP 4307591 U JP4307591 U JP 4307591U JP H04135280 U JPH04135280 U JP H04135280U
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JP
Japan
Prior art keywords
thread
needle
bobbin
take
sewing
Prior art date
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Pending
Application number
JP4307591U
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Japanese (ja)
Inventor
章文 仲島
Original Assignee
ブラザー工業株式会社
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Priority to JP4307591U priority Critical patent/JPH04135280U/en
Publication of JPH04135280U publication Critical patent/JPH04135280U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】 【目的】 上糸を縫針に通した状態で下糸巻を行う際、
上糸の屈曲を少なくして、上糸が流れやすく、良好な糸
巻ができるミシンを提供する。 【構成】 ミシンの天秤11は、縫製時に上糸弛緩位置
と上糸緊張位置との間を移動される。そして、縫製状態
のミシンを糸コマ19より糸案内装置27、天秤11を
介して針9に上糸Tを通した状態でボビンに下糸巻をす
る糸巻状態に下糸巻装置31の腕37を糸巻状態位置に
回動して切り換えたとき、天秤駆動モータ45が糸コマ
19と天秤11との間の糸道経路上に配置される糸案内
装置27の側部に天秤11の上糸挿通部11aを移動す
る。
(57) [Summary] [Purpose] When winding the bobbin thread with the upper thread passed through the sewing needle,
To provide a sewing machine which allows the upper thread to easily flow by reducing the bending of the upper thread, and enables good thread winding. [Structure] A thread take-up lever 11 of a sewing machine is moved between an upper thread relaxing position and an upper thread tensioning position during sewing. Then, the arm 37 of the bobbin thread winding device 31 is placed in the thread winding state in which the needle thread T is passed through the needle 9 from the thread spool 19 through the thread guide device 27 and the thread take-up lever 11, and the bobbin is wound with the bobbin. When the thread take-up lever 11 is rotated to the position, the thread take-up drive motor 45 inserts the needle thread insertion portion 11a of the take-up thread thread take-up 11 into the side of the thread guide device 27, which is disposed on the thread path between the thread take-up 19 and the take-up thread take-up 11. Moving.

Description

【考案の詳細な説明】[Detailed explanation of the idea]

【0001】0001

【産業上の利用分野】[Industrial application field]

本考案は、上糸供給源と、上糸が挿通される上糸挿通部を有し、上糸弛緩位置 と上糸緊張位置との間を移動される天秤と、前記糸供給源と前記天秤との間の糸 道経路上に配置される糸案内装置と、ミシン機枠に上下往復動可能に支持された 針棒に固定される縫針と、加工布に縫製をする縫製状態とボビンに下糸を巻く糸 巻状態との切り換えをする切換手段を有し、前記糸供給源より前記糸案内装置、 前記天秤を介して前記縫針に上糸を通した状態でボビンに下糸巻をする下糸巻取 装置とを有するミシンに関するものである。 The present invention has a needle thread supply source, a needle thread insertion part through which the needle thread is inserted, and a needle thread relaxation position. and an upper thread tensioning position; and a thread thread between the thread supply source and the thread thread thread tensioning position. The thread guide device is placed on the path and is supported by the sewing machine frame so that it can move vertically and reciprocally. The sewing needle fixed to the needle bar, the sewing state for sewing on the work cloth, and the thread for winding the bobbin thread on the bobbin the yarn guide device has a switching means for switching between the winding state and the yarn supply source; A bobbin thread take-up for winding the bobbin around the bobbin while passing the upper thread through the sewing needle through the thread take-up. The present invention relates to a sewing machine having a device.

【0002】0002

【従来の技術】[Conventional technology]

従来、この種のミシンについては、例えば特公昭55−32399号公報に開 示されており、そのミシンを図5を参照して説明する。 Conventionally, this type of sewing machine was disclosed, for example, in Japanese Patent Publication No. 55-32399. The sewing machine will be described with reference to FIG.

【0003】 モータ1に周知の機構を介して連結された主軸(図示せず)がミシンアーム部 3の機枠5に回転可能に支持されている。その主軸の回転により上下往復動する 針棒7がミシン頭部8の機枠5に支持されており、針棒7の下端には、針9が固 定されている。また、頭部8の機枠5には、針棒7の上下往復動と連動して主軸 の回転により上糸弛緩位置と上糸緊張位置との間を上下往復動をする天秤11が 支持されている。その天秤11には上糸を挿通する上糸挿通部11a(図2参照 )が設けられている。更に、ミシン頭部8の機枠5に上下動可能に支持された押 え棒(図示せず)の下端には加工布を押圧する押え足15が連結されている。前 記押え棒は、機枠5に回動可能に支持された押え上げ17の操作により加工布を 押圧して縫製を行うための縫製位置と、加工布の出し入れを行う布出入位置とに 上下動される。0003 A main shaft (not shown) connected to the motor 1 through a well-known mechanism is connected to the sewing machine arm. It is rotatably supported by the machine frame 5 of No. 3. It reciprocates up and down due to the rotation of its main shaft. A needle bar 7 is supported by a machine frame 5 of a sewing machine head 8, and a needle 9 is fixedly attached to the lower end of the needle bar 7. has been established. In addition, a main shaft is attached to the machine frame 5 of the head 8 in conjunction with the up and down reciprocation of the needle bar 7. The thread take-up lever 11 reciprocates up and down between the needle thread relaxation position and the needle thread tension position by the rotation of the thread take-up lever 11. Supported. The thread take-up lever 11 has an upper thread insertion portion 11a (see Fig. 2) through which the upper thread is inserted. ) is provided. Furthermore, a pusher is supported on the machine frame 5 of the sewing machine head 8 so as to be movable up and down. A presser foot 15 for pressing the work cloth is connected to the lower end of the presser bar (not shown). Before The presser foot lifts the work cloth by operating a presser foot lifter 17 rotatably supported on the machine frame 5. Sewing position for pressing and sewing, and cloth loading/unloading position for loading and unloading processed fabric. Moved up and down.

【0004】 ミシンアーム部3の上部には上糸Tが巻かれた糸コマ19を回転可能に支持す る糸立て棒21が設けられている。その糸立て棒21と天秤11との間の糸道経 路上には、周知の糸調子皿を含む糸調子器23及び、上糸Tのたるみを取る糸取 りバネ25(図2参照)を備えた糸案内装置27が設けられている。その糸案内 装置27は、天秤11の上糸弛緩位置よりも下方に配設されている。前記押え上 げ17を操作して前記押え足15を縫製位置に設定すると、糸調子器23により 上糸Tが挟持される。また、押え上げ17を操作して押え足15を布出入位置に 設定すると、糸調子器23による上糸Tの挟持が開放されるように構成されてい る。0004 The upper part of the sewing machine arm 3 rotatably supports a thread block 19 on which the upper thread T is wound. A spool pin 21 is provided. The thread path between the spool pin 21 and the thread take-up lever 11 On the road, there is a thread tension device 23 including a well-known thread tension disc, and a thread take-up which takes up the slack of the upper thread T. A thread guide device 27 is provided with a spring 25 (see FIG. 2). The thread guide The device 27 is disposed below the needle thread relaxation position of the thread take-up 11. The presser foot When the presser foot 15 is set to the sewing position by operating the lever 17, the thread tension device 23 The upper thread T is clamped. Also, operate the presser foot lifter 17 to move the presser foot 15 to the cloth loading/unloading position. When set, the upper thread T is released from being held by the thread tension device 23. Ru.

【0005】 また、ミシン脚柱部29の側部に下糸巻装置31が設けられている。その下糸 巻装置31には、ボビンを取り付ける糸巻軸35が周知の機構を介して前記モー タ1に連結可能に備えられている。その糸巻軸35には腕37が固定されており 、その腕37には糸を糸巻軸35方向に案内するための糸案内溝が形成されてい る。そして、モータ1と前記主軸との連結を解除して、モータ1と糸巻軸35と を連結する糸巻状態位置と、モータ1と糸巻軸35との連結を解除して、モータ 1と前記主軸とを連結する縫製状態位置との間を腕37が回動可能である。[0005] Further, a bobbin winding device 31 is provided on the side of the sewing machine pillar portion 29. the bobbin thread A bobbin winding shaft 35 to which a bobbin is attached is connected to the winding device 31 through a well-known mechanism. It is provided so as to be connectable to the data controller 1. An arm 37 is fixed to the pincushion shaft 35. , a thread guide groove is formed in the arm 37 for guiding the thread in the direction of the bobbin winding shaft 35. Ru. Then, the connection between the motor 1 and the main shaft is released, and the motor 1 and the bobbin shaft 35 are connected. The pincushion state position where the motor 1 and the pincushion shaft 35 are connected is released, and the motor The arm 37 is rotatable between the sewing state position where the sewing state 1 and the main shaft are connected.

【0006】 更に、ミシン頭部8の作業者側面には、ミシンの起動・停止を制御する主スイ ッチ39が設けられている。そして、ベッド41には、加工布に送りを与える周 知の四運動送りを行い、針板43の送り溝に出没する送り歯(図示せず)が配設 され、この送り歯と前記押え足15とにより加工布が挟持され、加工布は間欠的 に送られる。[0006] Furthermore, on the operator's side of the sewing machine head 8, there is a main switch that controls starting and stopping of the sewing machine. A switch 39 is provided. The bed 41 is provided with a circumference that feeds the processed cloth. A feed dog (not shown) that performs four-movement feed and retracts from the feed groove of the throat plate 43 is provided. The work cloth is held between the feed dog and the presser foot 15, and the work cloth is intermittently sent to.

【0007】 ボビンに糸巻をするには、まず、針9を最上位位置に停止させる。このとき針 9の移動に連動して天秤11が前記糸緊張位置に移動される。そして、下糸巻装 置31の腕37を前記糸巻状態位置に回動してミシンを縫製状態から糸巻状態に 切り換えて、糸巻軸35にボビンを取り付ける。次に、押え上げ17を操作して 押え足15を前記布出入位置に設定する。この状態で上糸Tを前記糸コマ19よ り前記糸調子器23を通って下降して、前記糸案内装置27で上に曲げられ、前 記天秤11の上糸挿通部11aにより下に曲げられた後、前記針9を通して、前 記押え足15の針落孔を通して下糸巻装置31の糸案内溝に案内してボビンに巻 き付ける。[0007] To wind the bobbin, first, the needle 9 is stopped at the uppermost position. At this time, the needle In conjunction with the movement of the thread take-up 9, the thread take-up 11 is moved to the thread tensioning position. And bobbin winding The arm 37 of the machine 31 is rotated to the bobbin winding state position to change the sewing machine from the sewing state to the bobbin winding state. Then, the bobbin is attached to the bobbin winding shaft 35. Next, operate the presser foot lifter 17. The presser foot 15 is set at the cloth loading/unloading position. In this state, thread the upper thread T through the thread spool 19. The thread is lowered through the thread tension device 23, bent upward by the thread guide device 27, and then After being bent downward by the needle thread insertion part 11a of the thread take-up lever 11, the thread thread is passed through the needle 9 and then The thread is guided through the needle hole of the presser foot 15 to the thread guide groove of the bobbin winder 31 and wound around the bobbin. to ask.

【0008】 そして、主スイッチ39を操作してモータ1を駆動してボビンに下糸を巻く。[0008] Then, the main switch 39 is operated to drive the motor 1 to wind the bobbin around the bobbin.

【0009】[0009]

【考案が解決しようとする課題】[Problem that the idea aims to solve]

しかしながら、従来のミシンにおいて下糸巻を行う際、上糸Tは糸案内装置2 7、天秤11、針9等により屈曲されているので、その屈曲抵抗により上糸Tに は、大きな張力がかかるため、糸がボビンに向かって流れにくくなる。従って、 糸がボビンに強く巻かれたり、糸切れが起こるといった問題がある。 However, when winding the bobbin thread in a conventional sewing machine, the upper thread T is 7. Since it is bent by the thread take-up 11, needle 9, etc., the needle thread T is bent due to its bending resistance. Since this applies a large amount of tension, it becomes difficult for the thread to flow toward the bobbin. Therefore, There are problems such as the thread being tightly wound around the bobbin and thread breakage.

【0010】 本考案は、上述した問題点を解決するためになされたものであり、下糸巻時に 天秤の上糸挿通部を糸案内装置の近傍に移動させることにより、上糸の天秤での 屈曲抵抗をなくして、針に上糸を通したままで良好な下糸巻ができるミシンを提 供することを目的としている。0010 This invention was made to solve the above-mentioned problems, and when winding the bobbin thread, By moving the needle thread insertion part of the thread take-up to the vicinity of the thread guide device, the thread take-up part can be moved closer to the thread guide device. We propose a sewing machine that eliminates bending resistance and allows for good bobbin winding with the upper thread threaded through the needle. The purpose is to provide

【0011】[0011]

【課題を解決するための手段】[Means to solve the problem]

この目的を達成するために本考案は、上糸供給源と、上糸が挿通される上糸挿 通部を有し、上糸弛緩位置と上糸緊張位置との間を移動される天秤と、前記上糸 供給源と前記天秤との間の糸道経路上に配置される糸案内装置と、ミシン機枠に 上下往復動可能に支持された針棒に固定される縫針と、加工布に縫製をする縫製 状態とボビンに下糸を巻く糸巻状態との切り換えをする切換手段を有し、前記上 糸供給源より前記糸案内装置、前記天秤を介して前記縫針に上糸を通した状態で ボビンに下糸巻をする下糸巻取装置とを有するミシンにおいて、前記切換手段に より縫製状態から糸巻状態に切り換えたとき、前記天秤の上糸挿通部を前記糸案 内装置の近傍に移動させる天秤駆動手段を備えている。 To achieve this purpose, the present invention provides an upper thread supply source and an upper thread insert through which the upper thread is inserted. a thread take-up lever having a passing portion and moved between an upper thread relaxing position and an upper thread tensioning position; a thread guide device disposed on the thread path between the supply source and the thread take-up; A sewing needle fixed to a needle bar that is supported so that it can move up and down, and a sewing machine that sews on processed fabric. The above-mentioned upper The upper thread is passed from the thread supply source to the sewing needle via the thread guide device and the thread take-up. In a sewing machine having a bobbin thread winding device for winding a bobbin on a bobbin, the switching means When switching from the sewing state to the bobbin winding state, the upper thread insertion portion of the thread take-up lever is inserted into the thread guide. The balance drive means is provided to move the balance close to the inner device.

【0012】0012

【作用】[Effect]

上記の構成を有する本考案のミシンの天秤は、縫製時に上糸弛緩位置と上糸緊 張位置との間を移動される。そして、縫製状態のミシンを上糸供給源より糸案内 装置、前記天秤を介して縫針に上糸を通した状態でボビンに下糸巻をする糸巻状 態に下糸巻取装置の切換手段が切り換えたとき、天秤駆動手段が上糸供給源と前 記天秤との間の糸道経路上に配置される糸案内装置の近傍に天秤の上糸挿通部を 移動させる。 The thread take-up of the sewing machine of the present invention having the above-mentioned configuration is capable of adjusting the needle thread relaxation position and needle thread tension during sewing. is moved between the two positions. Then, the thread is guided from the upper thread supply source to the sewing machine in the sewing state. The device is a pincushion type device that winds the bobbin thread onto the bobbin while passing the upper thread through the sewing needle through the thread take-up. When the switching means of the bobbin thread winding device switches to The needle thread insertion part of the thread take-up is placed near the thread guide device located on the thread path between the thread take-up and the thread take-up. move it.

【0013】[0013]

【実施例】【Example】

以下、本考案を具体化した一実施例を図面を参照して説明する。 An embodiment embodying the present invention will be described below with reference to the drawings.

【0014】 但し従来技術と同一の部材には同一の符号を付け、その説明を省略する。[0014] However, the same members as in the prior art are given the same reference numerals, and their explanations will be omitted.

【0015】 図2に示すように、ミシン頭部8の機枠5に設けられた固定軸41には、上糸 挿通部11aを有する天秤11が、その基端部において回動可能に枢支されてい る。天秤11の基端部側の一側には扇形歯43が天秤11と一体形成され、その 歯面は天秤11の回動軸線を中心とした扇状に形成されている。前記扇形歯43 は、前記機枠5内に固定された天秤駆動モータ45のモータ軸47に固着された ピニオン49と噛合している。[0015] As shown in FIG. 2, a fixed shaft 41 provided on the frame 5 of the sewing machine head 8 has an upper thread A balance 11 having an insertion portion 11a is rotatably supported at its base end. Ru. A fan-shaped tooth 43 is formed integrally with the balance 11 on one side of the proximal end of the balance 11. The tooth surface is formed in a fan shape centered on the rotation axis of the balance 11. The sector tooth 43 is fixed to the motor shaft 47 of the balance drive motor 45 fixed in the machine frame 5. It meshes with pinion 49.

【0016】 モータ1は周知の機構を介して針棒7、送り歯(図示せず)、釜(図示せず) に周知の動作をさせる。[0016] The motor 1 is connected to a needle bar 7, a feed dog (not shown), and a hook (not shown) through a well-known mechanism. perform a known action.

【0017】 前記押え上げ17を操作して前記押え足15を前記布出入位置に設定すると、 前記糸調子器23による上糸Tの挟持が開放されるとともに、押え上げスイッチ 51がONされる。また、押え上げ17を操作して押え足15を前記縫製位置に 設定すると、糸調子器23により上糸Tが挟持されるとともに、押え上げスイッ チ51がOFFされるように構成されている。押え上げスイッチ51はONされ ると布出入状態信号を出力する。[0017] When the presser foot 15 is set to the cloth loading/unloading position by operating the presser foot lifter 17, The upper thread T is released from being held by the thread tension device 23, and the presser foot lifting switch is activated. 51 is turned on. Also, operate the presser foot lifter 17 to move the presser foot 15 to the sewing position. When set, the upper thread T is held by the thread tension device 23, and the presser foot lifting switch is activated. The switch 51 is configured to be turned off. The presser foot lifter switch 51 is turned on. When this happens, a cloth loading/unloading status signal is output.

【0018】 前記下糸巻装置31の腕37を前記糸巻状態位置に回動すると、周知の機構に より前記モータ1と前記主軸との連結を解除してモータ1と糸巻軸35とを連結 するとともに、糸巻スイッチ53がONされる。また、腕37を前記縫製状態位 置に回動すると、周知の機構によりモータ1と糸巻軸35との連結を解除してモ ータ1と前記主軸とを連結するとともに、糸巻スイッチ53がOFFされるよう に構成されている。糸巻スイッチ53はONされると糸巻状態信号を出力する。[0018] When the arm 37 of the bobbin winder 31 is rotated to the winding position, a well-known mechanism is activated. The connection between the motor 1 and the main shaft is released, and the motor 1 and the bobbin shaft 35 are connected. At the same time, the peg switch 53 is turned on. In addition, the arm 37 is placed in the sewing state. When the motor 1 is rotated to the position, a well-known mechanism releases the connection between the motor 1 and the bobbin shaft 35, and the motor The motor 1 and the main shaft are connected, and the bobbin winding switch 53 is turned off. It is composed of When the pin winding switch 53 is turned on, it outputs a pin winding state signal.

【0019】 図3に示すように、本実施例のミシンは、マイクロプロセッサ(CPU)を基 礎とする制御装置55を備えている。この制御装置55には、その入力側に主ス イッチ39、糸巻スイッチ53、押え上げスイッチ51及び前記主軸の位相を検 知する位相検出装置57がそれぞれ接続され、更に、その出力側には、モータ1 を駆動する駆動回路59、天秤駆動モータ45を駆動する駆動回路61がそれぞ れ接続されている。[0019] As shown in Figure 3, the sewing machine of this embodiment is based on a microprocessor (CPU). It is equipped with a control device 55 as a foundation. This control device 55 has a main stand on its input side. The phases of the switch 39, the bobbin winding switch 53, the presser foot lifting switch 51, and the main shaft are detected. A phase detection device 57 is connected to each of the motors 1 to A drive circuit 59 that drives the balance drive motor 45, and a drive circuit 61 that drives the balance drive motor 45, respectively. connected.

【0020】 この制御装置55は、糸巻スイッチ53がOFFであるミシンの縫製状態にお いて主スイッチ39のONによりモータ1を駆動し、かつ前記位相検出装置から の検出結果に応答して天秤駆動モータを駆動して所望の縫目を形成する縫目形成 モードと、糸巻スイッチ53がONであるミシンの糸巻状態において主スイッチ 39のONによりモータ1を駆動してボビンに下糸を巻く糸巻モードとを実行す るように構成されている。[0020] This control device 55 controls the sewing machine when the bobbin winding switch 53 is OFF. When the main switch 39 is turned on, the motor 1 is driven, and the phase detection device Stitch formation in which the desired seam is formed by driving the balance drive motor in response to the detection results. mode and the main switch in the sewing machine's bobbin winding state when the bobbin winding switch 53 is ON. 39 is turned ON, the motor 1 is driven to execute the bobbin winding mode in which the bobbin thread is wound around the bobbin. It is configured to

【0021】 縫目形成モードの時、制御装置55は天秤駆動モータ45を駆動して天秤11 の上糸挿通部11aを前記上糸弛緩位置と前記上糸緊張位置と間で上下往復動さ せる。また、糸巻スイッチ53がONされて糸巻状態信号が出力させると、制御 装置55は天秤駆動モータ45を駆動して前記上糸挿通部11aを前記糸案内装 置27の側部である糸巻位置に停止させる。[0021] In the stitch forming mode, the control device 55 drives the thread take-up motor 45 to move the thread take-up 11. The needle thread insertion portion 11a is reciprocated up and down between the needle thread relaxing position and the needle thread tensioning position. let In addition, when the bobbin winding switch 53 is turned on and the bobbin winding state signal is output, the control The device 55 drives the thread take-up motor 45 to move the upper thread insertion portion 11a to the thread guide device. It is stopped at the bobbin winding position, which is the side of position 27.

【0022】 次に本実施例におけるミシンの動作について図4のフローチャートを参照して 説明する。[0022] Next, the operation of the sewing machine in this embodiment will be explained with reference to the flowchart in FIG. explain.

【0023】 まず、作業者によってミシンに電源投入が行われると、初期設定として、制御 装置55は天秤駆動モータ45を駆動して、天秤11を前記糸緊張位置に停止し 、かつ針9を最上位位置に停止させる(ステップS1、以下S1とし他のステッ プについても同様とする)。この状態で、作業者は糸掛けを行う。糸掛けは、従 来と同じように、押え上げ17を操作して押え足15を布出入位置に設定して、 糸立て棒21に回転可能に支持された糸コマ19から導かれた上糸Tを、糸調子 器23、糸案内装置27、天秤11の上糸挿通部11aの順に掛けた後、針9に 通す。制御装置55は糸巻スイッチ53がONかどうかを判断する(S2)。[0023] First, when the power is turned on to the sewing machine by the operator, the control The device 55 drives the thread take-up motor 45 to stop the thread take-up 11 at the thread tension position. , and stop the needle 9 at the highest position (step S1, hereinafter referred to as S1). The same applies to pools). In this state, the worker threads the thread. Threading As before, operate the presser foot lifter 17 to set the presser foot 15 to the cloth loading/unloading position. The upper thread T led from the thread spool 19 rotatably supported by the spool pin 21 is After threading the needle 23, the thread guide device 27, and the needle thread insertion part 11a of the thread take-up lever 11 in this order, Pass. The control device 55 determines whether the bobbin winding switch 53 is ON (S2).

【0024】 糸巻スイッチ53がONであると制御装置55が判断すると(S2・YES) 、ミシンは糸巻状態となり、制御装置55が天秤駆動モータ45を駆動して前記 上糸挿通部11aを前記糸巻位置に停止させる(S3)。図1に示すように、針 9まで通った上糸Tを押え足15の針落孔を通して、下糸巻装置31まで案内さ せる。[0024] When the control device 55 determines that the bobbin switch 53 is ON (S2, YES) , the sewing machine enters the bobbin winding state, and the control device 55 drives the thread take-up motor 45 to The needle thread insertion portion 11a is stopped at the thread winding position (S3). As shown in Figure 1, the needle The upper thread T that has passed up to 9 is guided through the needle hole of the presser foot 15 to the bobbin winder 31. let

【0025】 次に、主スイッチ39がONされると(S4・YES)、制御装置55は押え 上げスイッチ51がONかどうかを判断する(S5)。押え上げスイッチ51が OFFであると判断すると(S5・NO)、周知の警報装置(図示せず)が警告 し(S7)、S2へ戻る。押え上げスイッチ51がONであると判断する(S5 ・YES)と、モータ1を駆動する(S6)。[0025] Next, when the main switch 39 is turned on (S4・YES), the control device 55 It is determined whether the up switch 51 is ON (S5). Presser foot lift switch 51 If it is determined that it is OFF (S5, NO), a well-known alarm device (not shown) will issue a warning. (S7) and returns to S2. It is determined that the presser foot lifter switch 51 is ON (S5 - YES), the motor 1 is driven (S6).

【0026】 そして、主スイッチ39がOFFされると(S8・YES)、モータ1を停止 する(S9)。制御装置55は糸巻スイッチ53がOFFかどうかを判断する( S10)。糸巻スイッチ53がONであると判断する(S10・NO)と、主ス イッチ39がONかどうかを判断する(S11)。主スイッチ39がONである と判断すると(S11・YES)、S5へ戻る。主スイッチ39がOFFである と判断すると(S11・NO)、S10へ戻る。S1Oにおいて制御装置55が 糸巻スイッチ53がOFFであると判断する(S10・YES)と、天秤駆動モ ータ45を駆動して天秤11の上糸挿通部11aを前記糸緊張位置に停止させ( S12)、S2へ戻る。[0026] Then, when the main switch 39 is turned off (S8・YES), the motor 1 is stopped. (S9). The control device 55 determines whether the peg switch 53 is OFF ( S10). When it is determined that the bobbin winding switch 53 is ON (S10, NO), the main switch It is determined whether the switch 39 is ON (S11). Main switch 39 is ON If it is determined that (S11, YES), the process returns to S5. Main switch 39 is OFF If it is determined that (S11, NO), the process returns to S10. In S1O, the control device 55 When it is determined that the bobbin winding switch 53 is OFF (S10・YES), the balance drive motor is turned off. The needle thread insertion portion 11a of the thread take-up lever 11 is stopped at the thread tension position by driving the motor 45 ( S12), return to S2.

【0027】 また、S2において糸巻スイッチ53がOFFであると制御装置55が判断す ると(S2・NO)、ミシンは縫製状態となる。主スイッチ39がONされると (S13)、制御装置55は押え上げスイッチ51がOFFかどうかを判断する (S14)。押え上げスイッチ51がONであると判断すると(S14・NO) 、周知の警報装置(図示せず)が警告し(S16)、S2へ戻る。押え上げスイ ッチ51がOFFであると判断すると(S14・YES)、制御装置55はモー タ1を駆動し、前記位相検出装置57の検出結果に応答して天秤駆動モータ45 を駆動して、縫製をする(S15)。[0027] Further, if the control device 55 determines that the bobbin winding switch 53 is OFF in S2, Then (S2, NO), the sewing machine enters the sewing state. When the main switch 39 is turned on (S13), the control device 55 determines whether the presser foot lifter switch 51 is OFF. (S14). When it is determined that the presser foot lifter switch 51 is ON (S14, NO) , a well-known alarm device (not shown) issues a warning (S16), and the process returns to S2. presser foot lifter If it is determined that the switch 51 is OFF (S14・YES), the control device 55 turns the mode off. In response to the detection result of the phase detection device 57, the balance drive motor 45 is driven to perform sewing (S15).

【0028】 そして、主スイッチ39が押されると(S17・YES)、モータ1及び天秤 駆動モータ45は停止する(S18)。このとき周知のように、制御装置55は 針9が最上位位置にくるようにモータ1を停止し、天秤11が糸緊張位置にくる ように天秤駆動モータ45を停止する。そして、S2へ戻る。[0028] Then, when the main switch 39 is pressed (S17, YES), the motor 1 and the balance The drive motor 45 is stopped (S18). At this time, as is well known, the control device 55 Stop the motor 1 so that the needle 9 is at the highest position, and the thread take-up 11 is at the thread tension position. Then, the balance drive motor 45 is stopped. Then, the process returns to S2.

【0029】 以上のように、本考案は、糸立て棒21に回転可能に支持された糸コマ19か ら導かれた上糸Tを糸調子器23、糸案内装置27、天秤11の上糸挿通部11 aの順に掛け、針9に通った上糸Tを押え足15の針落孔を通して、下糸巻装置 31まで案内して下糸巻をするときに、天秤11の上糸挿通部11aが糸案内装 置27の側部に設定されて上糸Tが上糸挿通部11aにより屈曲しないので、糸 が下糸巻装置31に向かって流れやすく、糸切れが起こらない。[0029] As described above, in the present invention, the thread spool 19 rotatably supported by the thread spool pin 21 The needle thread T guided from the thread tension device 23, the thread guide device 27, and the needle thread insertion portion 11 of the thread take-up lever 11 The upper thread T passed through the needle 9 is passed through the needle hole of the presser foot 15, and then passed through the lower thread winding device. 31 and winding the bobbin thread, the needle thread insertion portion 11a of the thread take-up lever 11 is connected to the thread guide device. Since the needle thread T is set on the side of the needle thread insertion part 11a and is not bent by the needle thread insertion part 11a, the thread The thread easily flows toward the bobbin winding device 31, and thread breakage does not occur.

【0030】 尚、本実施例では、下糸巻装置31の糸巻軸35をモータ1で行っているが、 下糸巻用に専用のモータを使用しても良い。[0030] In this embodiment, the bobbin winding shaft 35 of the bobbin winding device 31 is operated by the motor 1. A dedicated motor may be used for winding the bobbin thread.

【0031】 また、天秤11が上下往復動していたが、天秤11が左右往復動する場合でも 同様の効果が得られる。[0031] In addition, although the balance 11 has been reciprocating up and down, even when the balance 11 is reciprocating left and right, A similar effect can be obtained.

【0032】[0032]

【考案の効果】[Effect of the idea]

以上説明したことから明かなように、本考案のミシンでは、下糸巻時に天秤の 上糸挿通部を糸案内装置に近傍に移動させることにより、上糸の上糸挿通部での 屈曲抵抗がなくなるので、糸が下糸巻装置に向かって流れやすい。従って、糸が ボビンに強く巻かれたり、糸切れが起こるといったことがなく、針に上糸を通し たままで良好な下糸巻ができる。 As is clear from the above explanation, in the sewing machine of the present invention, when winding the bobbin thread, the thread take-up is By moving the upper thread insertion part closer to the thread guide device, the needle thread insertion part can be moved closer to the thread guide device. Since there is no bending resistance, the thread easily flows toward the bobbin winder. Therefore, the thread Thread the upper thread onto the needle without being tightly wound around the bobbin or breaking the thread. Good bobbin winding is possible even when the bobbin is left in place.

【図面の簡単な説明】[Brief explanation of drawings]

【図1】本考案の一実施例における糸巻状態のミシンの
正面図である。
FIG. 1 is a front view of a sewing machine in a bobbin winding state according to an embodiment of the present invention.

【図2】ミシンの頭部の内部を示す構成図である。FIG. 2 is a configuration diagram showing the inside of the head of the sewing machine.

【図3】ミシンの各部材を制御する電気制御系のブロッ
ク図である。
FIG. 3 is a block diagram of an electrical control system that controls each member of the sewing machine.

【図4】ミシンの動作のフローチャートである。FIG. 4 is a flowchart of the operation of the sewing machine.

【図5】従来技術における糸巻状態のミシンの正面図で
ある。
FIG. 5 is a front view of a conventional sewing machine in a bobbin winding state.

【符号の説明】[Explanation of symbols]

T 上糸 9 針 19 糸コマ 11 天秤 11a 上糸挿通部 27 糸案内装置 31 下糸巻装置 45 天秤駆動モータ T Needle thread 9 needles 19 Thread frame 11 Balance 11a Upper thread insertion part 27 Thread guide device 31 Bobbin winding device 45 Balance drive motor

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 上糸供給源と、上糸が挿通される上糸挿
通部を有し、上糸弛緩位置と上糸緊張位置との間を移動
される天秤と、前記糸供給源と前記天秤との間の糸道経
路上に配置される糸案内装置と、ミシン機枠に上下往復
動可能に支持された針棒に固定される縫針と、加工布に
縫製をする縫製状態とボビンに下糸を巻く糸巻状態との
切り換えをする切換手段を有し、前記上糸供給源より前
記糸案内装置、前記天秤を介して前記縫針に上糸を通し
た状態でボビンに下糸巻をする下糸巻取装置とを有する
ミシンにおいて、前記切換手段により縫製状態から糸巻
状態に切り換えたとき、前記天秤の上糸挿通部を前記糸
案内装置の近傍に移動させる天秤駆動手段を備えたこと
を特徴とするミシン。
1. A thread take-up lever having a needle thread supply source, a needle thread insertion part through which the needle thread is inserted, and which is moved between a needle thread relaxation position and a needle thread tension position; The thread guide device is placed on the thread path between the thread take-up lever, the sewing needle is fixed to the needle bar supported on the sewing machine frame so as to be able to move vertically and reciprocally, and the sewing state for sewing the work cloth and the bobbin are controlled. It has a switching means for switching between a bobbin winding state in which the bobbin thread is wound, and a bobbin winding state in which the bobbin thread is wound around the bobbin in a state in which the needle thread is passed from the needle thread supply source to the sewing needle via the thread guide device and the thread take-up. A sewing machine having a thread take-up device, further comprising a thread take-up drive means for moving an upper thread insertion portion of the thread take-up to the vicinity of the thread guide device when the switching means switches from the sewing state to the thread winding state. sewing machine.
JP4307591U 1991-06-10 1991-06-10 sewing machine Pending JPH04135280U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4307591U JPH04135280U (en) 1991-06-10 1991-06-10 sewing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4307591U JPH04135280U (en) 1991-06-10 1991-06-10 sewing machine

Publications (1)

Publication Number Publication Date
JPH04135280U true JPH04135280U (en) 1992-12-16

Family

ID=31923466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4307591U Pending JPH04135280U (en) 1991-06-10 1991-06-10 sewing machine

Country Status (1)

Country Link
JP (1) JPH04135280U (en)

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