JP2006158800A - Device for adjusting pressure in presser foot for sewing machine - Google Patents

Device for adjusting pressure in presser foot for sewing machine Download PDF

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JP2006158800A
JP2006158800A JP2004357520A JP2004357520A JP2006158800A JP 2006158800 A JP2006158800 A JP 2006158800A JP 2004357520 A JP2004357520 A JP 2004357520A JP 2004357520 A JP2004357520 A JP 2004357520A JP 2006158800 A JP2006158800 A JP 2006158800A
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sewing machine
sewing
spring
presser
speed
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JP3872807B2 (en
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Masanobu Takeda
昌宣 竹田
Shigeji Tsuta
茂治 蔦
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Nippo Sewing Machine Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for adjusting pressure in a presser foot for a sewing machine, capable of simply, easily, and neatly sewing any kinds of workpieces in a desired sewing way without imposing burden on a base material itself. <P>SOLUTION: When the workpieces B of various base materials are sewed in the desired sewing way, the operation speed of a sewing machine A is controlled to be the speed corresponding to the base materials of the workpieces B and the sewing way. The speed is shifted from low speed to high speed or from the high speed to the low speed in response to the stepping degree of a footboard 14. The device 1 for adjusting pressure in the presser foot for the sewing machine is operated in response to the stepping degree. Then the pressure of the presser foot Ad on the workpiece B is automatically adjusted. Consequently, any kinds of workpieces B are simply, easily, and neatly sewed in the desired sewing way without imposing burden on the base material itself. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、例えばニット、メリヤス、新素材、難素材等の様々な素材の被縫製物を所望する縫い方で縫製するときに起きる縫製不良現象を解消又は解決することができるミシン用押金圧調整装置に関する。   This invention is a sewing machine pressurizing pressure adjustment that can eliminate or solve a sewing failure phenomenon that occurs when sewing a sewing material of various materials such as knit, knitted fabric, new material, and difficult material by a desired sewing method. Relates to the device.

従来、上述のようなミシンによる縫製時に起きる縫製不良現象を解消する装置としては、例えば被縫布の厚さにより被縫物の押え圧を制御する手段を備えるミシンに於いて、被縫布の厚さの変化を検出する手段と、弾性体に構成されたことを特徴とする特許文献１のミシンの布押え圧制御装置がある。しかし、上述の装置は、予め設定された圧力でミシンの押し棒下端に取付けた押え金で被縫製物を押圧するので、ミシンの縫製速度を低速と高速との間で変化する過程で、被縫製物の縫い付け部に、例えばパッカリングやズレ、針り目の不揃い、段差の詰まり、伸縮、変形等の縫製不良現象が起こりやすく、且つ、被縫製物の縫い目に、例えば波打ち、連れ、皺、縫いズレ等の乱れが生じるため、縫製作業に熟練及び経験が必要であり、それらが発生しないように被縫製物の縫い付け部を修正するか、ゆっくりと縫製しなければならず、作業性が悪いという問題点を有している。また、作業者個人の技能に任せて問題の発生に対処するには、ノッチを多くして、ズレや伸縮等を強引にノッチで合わせるか、ミシンの運転速度を低下させる等の様々な方法で対処している。   Conventionally, as a device for eliminating the sewing failure phenomenon that occurs when sewing with the sewing machine as described above, for example, in a sewing machine provided with means for controlling the presser pressure of the sewing object by the thickness of the sewing cloth, There is a means for detecting a change in thickness, and a cloth presser pressure control device for a sewing machine disclosed in Patent Document 1, which is configured as an elastic body. However, since the above-described apparatus presses the workpiece with a presser foot attached to the lower end of the push rod of the sewing machine at a preset pressure, in the process of changing the sewing speed of the sewing machine between the low speed and the high speed, For example, puckering or misalignment, uneven stitches, clogging of steps, expansion / contraction, deformation, etc. are likely to occur in the sewn portion of the sewn product, and the seam of the sewn product is, for example, wavy, accompanied, Since irregularities such as wrinkles and sewing misalignment occur, skill and experience are necessary for the sewing work. It has the problem of poor quality. In addition, in order to deal with the occurrence of problems by leaving it to the individual skill of the worker, various methods such as increasing notches and forcibly adjusting misalignment and expansion / contraction with the notches, or reducing the operating speed of the sewing machine, etc. It is addressed.

実開平０７−０３７０５２号公報Japanese Utility Model Publication No. 07-037052

この発明は上記問題に鑑み、如何なる被縫製物も簡単且つ容易で、素材自体に負担を与えることなく、所望する縫い方で綺麗に縫製することができるミシン用押金圧調整装置の提供を目的とする。   SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a presser pressure adjusting device for a sewing machine, which can easily sew any material to be sewn, and can be sewn neatly in a desired way of sewing without imposing a burden on the material itself. To do.

請求項１に記載した発明のミシン用押金圧調整装置は、ミシンのアーム部に垂下された押え棒上端に浮上調節ネジと押え圧調節ネジを互いに当接して取付け、該当接の反力により押え棒を押えバネに抗して上昇させる押え金浮上装置を備え、上記ミシンのアーム部に対して上記押え棒と平行して取付けられた外筒の上端側開口部に、上記浮上調節ネジを加圧するための引きバネが装填された内筒を上下動可能に挿入保持し、上記外筒上端に突出する内筒上端に固定した連結バーの端部を、上記浮上調節ネジの上端に当接又は連結し、上記引きバネ上端を上記内筒の上端側内部に固定し、該引きバネの下端側中心部にワイヤー上端を係止して、上記外筒下端から引き出されたワイヤーと、上記ミシンの駆動を制御する制御部とを、該ミシンの運転速度を可変する踏み板に連結したことを特徴とする。   In the presser pressure adjusting device for a sewing machine according to the first aspect of the present invention, the lift adjusting screw and the presser pressure adjusting screw are attached to the upper end of the presser bar suspended from the arm portion of the sewing machine, and the presser foot is pressed by the reaction force of the corresponding contact. A presser foot levitation device that raises the bar against the presser spring is provided, and the levitation adjustment screw is added to the upper end side opening of the outer cylinder attached to the sewing machine arm in parallel with the presser bar. An inner cylinder loaded with a tension spring for pressing is inserted and held so as to be movable up and down, and the end of the connecting bar fixed to the upper end of the inner cylinder protruding from the upper end of the outer cylinder abuts on the upper end of the levitation adjustment screw or The upper end of the pulling spring is fixed inside the upper end side of the inner cylinder, the upper end of the wire is locked to the lower end side center of the pulling spring, the wire pulled out from the lower end of the outer cylinder, and the sewing machine A control unit for controlling the driving of the sewing machine. Characterized in that the concatenation of the speed variable is stepping plate.

上記被縫製物は、例えばニット、メリヤス、新素材、難素材等の様々な素材で構成することができる。また、被縫製物の縫い方は、例えばステッチ縫い、地縫い、バイアス縫い、異質素材の縫い合わせ等の何れか一つ又は複数の組み合わせで構成することができる。   The sewing product can be made of various materials such as knit, knitted fabric, new material, and difficult material. Moreover, the sewing method of a to-be-sewn material can be comprised by any one or some combination, such as stitch stitching, ground stitching, bias stitching, sewing of heterogeneous materials, and the like.

上記押え金浮上装置を備えたミシンを用いて、様々な素材の被縫製物を所望する縫い方で縫製する場合、ミシンの運転速度を、その被縫製物の素材及び縫い方に応じた速度に踏み板で制御する。つまり、踏み板（又はペダル）の踏み込む度合いに応じて、ワイヤーを介して引きバネを引き下げるとともに、その引きバネに蓄積される引き下げ力（復元力）を、内筒及び連結バーを介して、押え金浮上装置の浮上調節ネジに伝達し、被縫製物に押圧された押え金の圧力を増加又は減衰させる。且つ、ミシンの運転速度を低速から高速又は高速から低速に変化させ、踏み板の踏み込む度合いに追従してミシン用押金圧調整装置を作動させ、被縫製物に押圧された押え金の圧力を自動調整するので、素材自体に負担を与えることなく、所望する縫い方で綺麗に縫製することができる。   When using the sewing machine equipped with the presser foot levitation device to sew sewing materials of various materials in the desired sewing method, the operation speed of the sewing machine is set to a speed corresponding to the material and sewing method of the sewing products. Control with treadle. In other words, the pulling spring is pulled down via the wire in accordance with the degree of depression of the tread plate (or pedal), and the pulling force (restoring force) accumulated in the pulling spring is pressed via the inner cylinder and the connecting bar. The pressure of the presser foot that is transmitted to the floating adjustment screw of the floating device and pressed against the sewing product is increased or decreased. In addition, the sewing machine operating speed is changed from low speed to high speed or from high speed to low speed, and the presser pressure adjusting device for the sewing machine is operated according to the degree to which the treadle is depressed to automatically adjust the pressure of the presser foot pressed against the sewing product. Therefore, it is possible to sew beautifully with a desired sewing method without imposing a burden on the material itself.

また、ミシンの運転開始（スタート作動）から低速に移行する間は、被縫製物に押圧された押え金の圧力に変化を与えず、例えば中高速から高速に移行するときに押え金の圧力を徐々に強める。ミシンの運転速度を高速から低速に移行するとき押え金の圧力を徐々に弱める。   In addition, during the transition from the start of sewing machine operation (start operation) to low speed, the pressure of the presser foot pressed against the workpiece is not changed. Strengthen gradually. When shifting the operating speed of the sewing machine from high speed to low speed, gradually reduce the pressure of the presser foot.

請求項２に記載した発明のミシン用押金圧調整装置は、上記請求項１記載の構成と併せて、上記引きバネ内に組み込まれた押しバネ下端を、該引きバネ下端に固定した受け部材に当接し、上記受け部材の中心部に挿通したワイヤー上端を、上記押しバネ上端に固定したことを特徴とする。つまり、ワイヤーを介して押しバネが圧縮されたとき、その押しバネに蓄積された復元力により引きバネが引き下げられ、その引きバネに蓄積される引き下げ力（復元力）を、内筒及び連結バーを介して、押え金浮上装置の浮上調節ネジに伝達する。   The pressurizing pressure adjusting device for a sewing machine according to a second aspect of the present invention includes a receiving member fixed to the lower end of the pulling spring with a lower end of the pressing spring incorporated in the pulling spring together with the configuration of the first aspect. The upper end of the wire that is in contact and inserted through the center of the receiving member is fixed to the upper end of the push spring. That is, when the pressing spring is compressed through the wire, the pulling spring is pulled down by the restoring force accumulated in the pushing spring, and the pulling-down force (restoring force) accumulated in the pulling spring is reduced to the inner cylinder and the connecting bar. To the levitation adjusting screw of the presser foot levitation device.

請求項３に記載した発明のミシン用押金圧調整装置は、上記請求項１又は２に記載の構成と併せて、上記引きバネの復元力を、上記押しバネが圧縮されたときに蓄積された復元力で下方に引き下げられるような強さに設定したことを特徴とする。つまり、踏み板の踏み込む度合いに応じて、引きバネに蓄積される引き下げ力（復元力）が増加し、内筒及び連結バーを介して、押え金浮上装置の浮上調節ネジに圧力を加える。   The pressurizing pressure adjusting device for a sewing machine according to a third aspect of the invention, together with the configuration according to the first or second aspect, accumulates the restoring force of the tension spring when the pressing spring is compressed. The strength is such that it can be pulled downward by a restoring force. That is, the pulling force (restoring force) accumulated in the pulling spring increases according to the degree of depression of the tread plate, and pressure is applied to the lifting adjustment screw of the presser foot lifting device via the inner cylinder and the connecting bar.

請求項４に記載した発明のミシン用押金圧調整装置は、上記請求項１又は２に記載の構成と併せて、上記押しバネを、上記引きバネが引き下げ開始されるまで圧縮されるような強さに設定したことを特徴とする。つまり、踏み板の踏み込み初期時において、ワイヤーを介して押しバネのみが圧縮され、引きバネに付与される圧力を吸収して、ミシンの低速運転時において押え金浮上装置の浮上調節ネジに圧力を伝達しない。   According to a fourth aspect of the present invention, there is provided a pressurizing pressure adjusting device for a sewing machine in combination with the structure of the first or second aspect, in which the push spring is compressed until the pull spring starts to be pulled down. It is characterized by having been set. In other words, when the treadle is initially depressed, only the push spring is compressed via the wire, absorbing the pressure applied to the pull spring, and transmitting the pressure to the lift adjustment screw of the presser foot levitation device during low-speed operation of the sewing machine do not do.

この発明によれば、ミシンの運転速度に応じて、被縫製物に押圧された押え金の圧力をミシン用押金圧調整装置が自動調整するので、如何なる被縫製物も簡単且つ容易で、素材自体に負担を与えることなく、所望する縫い方で綺麗に縫製することができる。また、ミシンの運転速度が速くなるほど被縫製物に付与される圧力が高くなるので、高速運転時における縫製不良現象（又は地団太現象）を無くすことができ、アタッチメントに属するような簡単な装置でありながら、縫製時において生じる様々な問題を解消及び解決することができる。   According to the present invention, since the presser pressure adjusting device for the sewing machine automatically adjusts the pressure of the presser foot pressed against the sewing product in accordance with the operating speed of the sewing machine, any sewing product is simple and easy, and the material itself Can be sewn in a desired manner of sewing without imposing a burden on the sewing machine. In addition, since the pressure applied to the sewing product increases as the operating speed of the sewing machine increases, it is possible to eliminate the sewing failure phenomenon (or the ground thickening phenomenon) during high-speed operation, and it is a simple device that belongs to the attachment. However, various problems that occur during sewing can be solved and solved.

また、ミシン用押金圧調整装置を標準ミシンに装着すれば、作業者の経験及び熟練した技術により縫製されていた大半の被縫製物を、未熟な作業者であっても簡単且つ容易に縫製することができ、作業者に与える労力負担が軽減され、縫製作業が楽に行える。且つ、標準ミシンの機能が大幅に変えられるので、縫製精度及び縫製能力、商品価値、生産性を向上させることができる。   In addition, if the presser pressure adjusting device for the sewing machine is attached to the standard sewing machine, most sewing items that have been sewn based on the experience and skill of the operator can be easily and easily sewn even by inexperienced operators. This reduces the labor burden on the operator and makes the sewing work easier. In addition, since the functions of the standard sewing machine can be significantly changed, it is possible to improve the sewing accuracy, sewing capacity, product value, and productivity.

また、ミシン用押金圧調整装置と押え金浮上装置とを連結バーにより一体的に連結するだけであるので、本発明の装置をミシンに対して簡単且つ容易に取付けることができ、メンテナンスや調整操作が不要となるだけでなく、コンパクト、廉価の要点を満たすものとなる。また、例えば特殊ミシン、専用ミシン等が持つ機能を標準ミシンに対して簡単且つ容易に付加することができる。   Further, since the presser pressure adjusting device for the sewing machine and the presser foot floating device are simply connected together by the connecting bar, the device of the present invention can be easily and easily attached to the sewing machine, and maintenance and adjustment operations can be performed. Not only becomes unnecessary, but also satisfies the main points of compactness and low price. For example, the functions of a special sewing machine, a dedicated sewing machine, etc. can be easily and easily added to a standard sewing machine.

この発明は、如何なる被縫製物も簡単且つ容易で、素材自体に負担を与えることなく、所望する縫い方で綺麗に縫製することができるという目的を、ミシンの運転速度に応じて、被縫製物に押圧された押え金の圧力をミシン用押金圧調整装置が自動調整することで達成した。   The object of the present invention is that any sewing product is simple and easy and can be sewn neatly in a desired sewing method without giving a load to the material itself, according to the operating speed of the sewing machine. This is achieved by automatically adjusting the pressure of the presser foot pressed by the presser pressure adjusting device for the sewing machine.

この発明の一実施例を以下図面に基づいて詳述する。
図面は、ミシンの運転速度に応じて、被縫製物に押圧された押え金の圧力を自動調整するミシン用押金圧調整装置を示し、図１に於いて、このミシン用押金圧調整装置１は、後述する押え金浮上装置３０（実開平６−３１６７５号公報）と組み合わせてミシンＡのアーム部Ａａに装着され、ミシンＡの運転速度に応じて、被縫製物Ｂに押圧された押え金Ａｄの圧力を自動調整するものである。 An embodiment of the present invention will be described below in detail with reference to the drawings.
The drawing shows a presser pressure adjusting device for a sewing machine that automatically adjusts the pressure of a presser foot pressed against a sewing product in accordance with the operating speed of the sewing machine. In FIG. The presser foot Ad attached to the arm portion Aa of the sewing machine A in combination with the presser foot floating device 30 (Japanese Utility Model Laid-Open No. 6-31675) described later and pressed against the sewing product B according to the operating speed of the sewing machine A. Automatically adjusts the pressure.

上記ミシン用押金圧調整装置１は、図３、図４にも示すように、上端側が開口され下端側が閉塞された外筒２を、ミシンＡのアーム部Ａａ上面に固定された取付け台４の突出側端部に垂直に差し込んで締付け固定し、上端側が閉塞され下端側が開口された内筒３を、外筒２内部に対して上下動可能に挿入保持している。   As shown in FIGS. 3 and 4, the sewing machine pressure adjusting device 1 includes an outer cylinder 2 having an upper end opened and a lower end closed. The mounting cylinder 4 is fixed to the upper surface of the arm portion Aa of the sewing machine A. The inner cylinder 3 is inserted and held perpendicularly to the projecting side end portion, and is clamped and fixed.

且つ、内筒３を外筒２に挿入するとき、コイル状の引きバネ５及び押しバネ８を内筒３に装填したまま挿入して、その引きバネ５の上端を内筒３の上端側内部に止め部材６で固定する。   When the inner cylinder 3 is inserted into the outer cylinder 2, the coiled tension spring 5 and the push spring 8 are inserted while being loaded in the inner cylinder 3, and the upper end of the tension spring 5 is connected to the upper end side inside the inner cylinder 3. It is fixed with a stop member 6.

且つ、ミシン用押金圧調整装置１と、後述する押え金浮上装置３０とを連動する連結バー７の一端側を、外筒２上端に突出される内筒３上端にネジで固定し、連結バー７の他端側下面に突出される当接部７ａを、後述する浮上調節ネジ３３（又は押え棒Ａｇ）の上端に当接又は連結している。   In addition, one end side of the connecting bar 7 linking the presser pressure adjusting device 1 for the sewing machine and the presser foot floating device 30 described later is fixed to the upper end of the inner cylinder 3 protruding from the upper end of the outer cylinder 2 with a screw. 7 is in contact with or connected to the upper end of a floating adjustment screw 33 (or presser bar Ag) described later.

且つ、外筒２の高さを取付け台４に対して上下方向に昇降調節し、外筒２の上端側縁部と内筒３の上端側縁部との隙間Ｈを、略２ｍｍとなるように設定している。また、隙間Ｈを、略２ｍｍ以下又は略２ｍｍ以上に可変調節することもできる。   Further, the height of the outer cylinder 2 is adjusted up and down with respect to the mounting base 4 so that the gap H between the upper end side edge of the outer cylinder 2 and the upper end side edge of the inner cylinder 3 is approximately 2 mm. Is set. Further, the gap H can be variably adjusted to approximately 2 mm or less or approximately 2 mm or more.

且つ、ミシンＡのアーム部Ａａ上面に突出するミシン用押金圧調整装置１及び押え金浮上装置３０の高さを、略６０ｍｍとなるように標準設定している。また、高さを、場合により略６０ｍｍ以下又は略６０ｍｍ以上に可変調節することもできる。   In addition, the heights of the sewing machine pressure adjusting device 1 and the presser foot floating device 30 protruding from the upper surface of the arm portion Aa of the sewing machine A are set as standard so as to be approximately 60 mm. Moreover, the height can be variably adjusted to about 60 mm or less or about 60 mm or more depending on the case.

且つ、引きバネ５にコイル状の押しバネ８を組み込むとき、ワイヤー９上端を引きバネ５下端に固定した受け部材１０の中心部に挿通して、その押しバネ８の上端に係止される止め部材１１に固定した後、引きバネ５内の中心部に押しバネ８を一体的に組み込んで、押しバネ８下端を引きバネ５下端に固定した受け部材１０に当接する。また、受け部材１０に挿通したワイヤー９の下端は、外筒２の下端側中心部に形成した孔部２ａから外部に引き出され、その孔部２ａに連結したチューブ１２に挿入している。   In addition, when the coiled push spring 8 is incorporated into the tension spring 5, the upper end of the wire 9 is inserted into the center portion of the receiving member 10 fixed to the lower end of the tension spring 5, and the latch is locked to the upper end of the push spring 8. After being fixed to the member 11, the pressing spring 8 is integrally incorporated in the central portion of the tension spring 5, and the lower end of the pressing spring 8 is brought into contact with the receiving member 10 fixed to the lower end of the tension spring 5. Further, the lower end of the wire 9 inserted through the receiving member 10 is drawn out from a hole 2a formed at the center on the lower end side of the outer cylinder 2 and inserted into a tube 12 connected to the hole 2a.

上記ワイヤー９及びチューブ１２は、ミシンＡ側部のミシン台Ａｅに形成した孔部Ａｆから下方に引き出され、ワイヤー９の下端をミシン台Ａｅ下部の支軸１３に取付けられた踏み板１４（ペダル）に対して後述するピットマン棒１８及び連結部材１９を介して連結し、チューブ１２の下端を調節ボルト１５の端部に固定した規制部材１６に連結し、チューブ１２の下端から引き出したワイヤー９をピットマン棒１８上に取付けた連結部材１９に連結している。   The wire 9 and the tube 12 are drawn downward from a hole Af formed in the sewing machine base Ae on the side of the sewing machine A, and the bottom end of the wire 9 is attached to the support shaft 13 at the lower part of the sewing machine base Ae (pedal) 14 Are connected via a pitman rod 18 and a connecting member 19, which will be described later, the lower end of the tube 12 is connected to a regulating member 16 fixed to the end of the adjusting bolt 15, and the wire 9 drawn from the lower end of the tube 12 is connected to the pitman. It is connected to a connecting member 19 mounted on the rod 18.

上記調節ボルト１５は、後述する取付け台１７に対してミシン台Ａｅ下部の枠部Ａｇと略直交する方向に取付けられ、チューブ１２の下端を調節ボルト１５の端部に固定した規制部材１６に連結し、そのチューブ１２及び規制部材１６から引き出したワイヤー９を連結部材１９に連結している。   The adjusting bolt 15 is attached to a mounting base 17, which will be described later, in a direction substantially perpendicular to the frame portion Ag below the sewing machine base Ae, and is connected to a restricting member 16 in which the lower end of the tube 12 is fixed to the end of the adjusting bolt 15. The wire 9 drawn from the tube 12 and the regulating member 16 is coupled to the coupling member 19.

且つ、ワイヤー９下端を連結部材１９上端に形成した受け部１９ａに対して回動自在に連結し、連結部材１９の下端をピットマン棒１８上に固定した支持部材２０に対してボルト２１で回動自在に連結し、規制部材１６と連結部材１９との間にコイルバネ２２を圧縮装填して、連結部材１９を、踏み板１４の踏み込み動作に応じてワイヤー９が略垂直に引き下げられる角度に回動自在に設けている。   In addition, the lower end of the wire 9 is rotatably connected to a receiving portion 19 a formed on the upper end of the connecting member 19, and the lower end of the connecting member 19 is rotated by a bolt 21 with respect to a support member 20 fixed on the pitman rod 18. The coil spring 22 is compressed and loaded between the restricting member 16 and the connecting member 19, and the connecting member 19 is rotatable to an angle at which the wire 9 can be pulled down substantially vertically in response to the stepping operation of the tread plate 14. Provided.

上記取付け台１７は、図２にもしめすように、ミシン台Ａｅ下部の枠部Ａｇに対してボルト２３及びナット２４で固定され、取付け台１７を枠部Ａｇ上の所望する位置に左右移動させてボルト２３及びナット２４で固定し、規制部材１６を調節ボルト１５の正逆回動操作により枠部Ａｇと略直交する方向に前後移動させる等して、規制部材１６を、踏み板１４の踏み込み動作に応じてワイヤー９が略垂直に引き下げられるように位置調節する。また、ピットマン棒１８は所望する長さに伸縮調節自在に設け、連結部材１９は、ピットマン棒１８上の所望する位置に移動調節自在に設けている。   As shown in FIG. 2, the mounting base 17 is fixed to the frame part Ag below the sewing machine base Ae with bolts 23 and nuts 24, and the mounting base 17 is moved to the desired position on the frame part Ag. The bolt 23 and the nut 24 are fixed, and the regulating member 16 is moved back and forth in a direction substantially perpendicular to the frame portion Ag by forward / reverse rotation operation of the adjusting bolt 15 so that the regulating member 16 is stepped on the tread plate 14. Accordingly, the position is adjusted so that the wire 9 is pulled down substantially vertically. Further, the pitman rod 18 is provided so as to be adjustable in a desired length, and the connecting member 19 is provided in a desired position on the pitman rod 18 so that the movement can be adjusted.

上記踏み板１４は、ピットマン棒１８を介して、モーターが内蔵された制御部２５の可変レバー２６に連結され、図３にも示すように、踏み板１４の爪先側を足で前方に向けて踏み込むと、その踏み込む度合いに応じて、引きバネ５に組み込まれた押しバネ８が圧縮され、押しバネ８に蓄積された復元力により引きバネ５が引き下げられるとともに、ピットマン棒１８を介して、制御部２５の可変レバー２６を高速側に回動し、ミシンＡの運転速度（又はモーターの回転速度）を低速から高速に変化させる。   The tread plate 14 is connected to the variable lever 26 of the control unit 25 with a built-in motor via the pitman rod 18, and as shown in FIG. 3, when the toe side of the tread plate 14 is stepped forward with a foot. Depending on the degree of depression, the pressing spring 8 incorporated in the pulling spring 5 is compressed, the pulling spring 5 is pulled down by the restoring force accumulated in the pressing spring 8, and the control unit 25 is connected via the pitman rod 18. The variable lever 26 is rotated to the high speed side to change the operating speed of the sewing machine A (or the rotational speed of the motor) from the low speed to the high speed.

且つ、踏み板１４の踏み込み動作に連動して、ワイヤー９上端が下方に引き下げられると、引きバネ５に組み込まれた押しバネ８が圧縮され、その押しバネ８に蓄積された復元力により引きバネ５が連動して引き下げられるので、引きバネ５に蓄積される引き下げ力（復元力）が増加し、内筒３を介して引きバネ５上端に固定した連結バー７に圧力が加えられる。その連結バー７に加えられた圧力は、後述する押え金浮上装置３０の浮上調節ネジ３３（又は押え棒Ａｇ）に伝達されるので、ミシンＡの運転速度が低速から高速に移行するほど、その運転速度に比例して、被縫製物Ｂに押圧された押え金Ａｄの圧力が強くなる。   When the upper end of the wire 9 is pulled downward in conjunction with the stepping operation of the tread plate 14, the push spring 8 incorporated in the pull spring 5 is compressed, and the pull spring 5 is restored by the restoring force accumulated in the push spring 8. Is pulled down in conjunction with each other, the pulling force (restoring force) accumulated in the pulling spring 5 is increased, and pressure is applied to the connecting bar 7 fixed to the upper end of the pulling spring 5 via the inner cylinder 3. Since the pressure applied to the connecting bar 7 is transmitted to a lifting adjustment screw 33 (or presser bar Ag) of the presser foot floating device 30 described later, the more the operating speed of the sewing machine A shifts from a low speed to a high speed, In proportion to the operation speed, the pressure of the presser foot Ad pressed against the workpiece B increases.

一方、図４にも示すように、踏み板１４に対する踏み込む力を弱めると、引きバネ５及び押しバネ８の復元力によりワイヤー９が引き上げられ、踏み込む前の状態に復帰するとともに、可変レバー２６を低速側に回動し、ミシンＡの運転速度を高速から低速に変化させる。   On the other hand, as shown in FIG. 4, when the stepping force on the tread plate 14 is weakened, the wire 9 is pulled up by the restoring force of the pulling spring 5 and the pushing spring 8 to return to the state before stepping on, and the variable lever 26 is moved at a low speed. The operation speed of the sewing machine A is changed from high speed to low speed.

且つ、ミシンＡの運転速度が低速になるほど、その運転速度に比例して、内筒３を介して引きバネ５上端に固定した連結バー７から圧力が取り除かれ、被縫製物Ｂに押圧された押え金Ａｄの圧力が低くなり、ミシンＡによる縫製作業時（高速運転時及び低速運転時）に起きるような縫製不良現象、例えばパッカリング、生地のズレ、縫い目の不揃い、伸縮、変形等が無くし、精度の高い縫製状態を保つことができる。   Further, as the operating speed of the sewing machine A becomes lower, the pressure is removed from the connecting bar 7 fixed to the upper end of the tension spring 5 via the inner cylinder 3 in proportion to the operating speed, and is pressed against the sewing product B. The pressure of the presser foot Ad is lowered, and sewing defects such as puckering, fabric misalignment, uneven seam, expansion and contraction, deformation, etc. that occur during sewing operations with sewing machine A (during high-speed operation and low-speed operation) are eliminated. Highly accurate sewing state can be maintained.

且つ、踏み板１４の踏み込み初期時は、押しバネ８が圧縮され、ミシンＡの運転速度が低速であるため、低速時に付与される圧力を吸収し、被縫製物Ｂに押圧された押え金Ａｄの圧力を低くする。一方、踏み板１４の爪先側を前側に踏み込んで、ミシンＡの運転速度を高速に移行するほど、引きバネ５に引く力が加わり、被縫製物Ｂに押圧された押え金Ａｄの圧力が高くなる。また、押しバネ８の圧縮は、ミシンＡの運転速度（モーターの回転速度）が一定速度に到達するまでのラグを吸収する。また、ミシンＡの運転停止後又は糸切り動作時に、踏み板１４の上昇を引きバネ５と押しバネ８で吸収する。   In addition, when the tread plate 14 is initially depressed, the pressing spring 8 is compressed and the operating speed of the sewing machine A is low. Therefore, the pressure applied at the low speed is absorbed and the presser foot Ad pressed against the sewing product B is absorbed. Reduce pressure. On the other hand, as the toe side of the tread plate 14 is stepped forward and the operating speed of the sewing machine A is shifted to a higher speed, a pulling force is applied to the pull spring 5 and the pressure of the presser foot Ad pressed against the sewing product B increases. . Further, the compression of the push spring 8 absorbs the lag until the operating speed of the sewing machine A (the rotational speed of the motor) reaches a constant speed. Further, after the operation of the sewing machine A is stopped or when the thread trimming operation is performed, the rise of the tread plate 14 is absorbed by the pull spring 5 and the push spring 8.

前記押え金浮上装置３０は、図１、図３、図４に示すように、既に公知の装置であるのでその詳細な説明を省略する。つまり、ミシンＡのアーム部Ａａに垂下される押え棒Ａｂを、ミシンＡのアーム部Ａａ上面に取付け台４を介して固定した押え圧調節ネジ３１で上下動自在に保持し、押え棒Ａｂの下端側受け部と押え圧調節ネジ３１の下端部との間に圧縮装填した押えバネ３２の復元力により、押え金Ａｄが取付けられた押え棒Ａｂを略垂直に押し下げられる方向に付勢している。   Since the presser foot floating device 30 is already a known device as shown in FIGS. 1, 3, and 4, detailed description thereof will be omitted. That is, the presser bar Ab suspended by the arm part Aa of the sewing machine A is held by the presser pressure adjusting screw 31 fixed to the upper surface of the arm part Aa of the sewing machine A via the mounting base 4 so as to be movable up and down. By the restoring force of the presser spring 32 compressed and loaded between the lower end side receiving part and the lower end part of the presser pressure adjusting screw 31, the presser bar Ab to which the presser foot Ad is attached is urged in a direction to be pushed down substantially vertically. Yes.

且つ、押え棒Ａｂ上端に取付けた浮上調節ネジ３３を押え圧調節ネジ３１の上端に当接して、その当接の反力により押え棒Ａｂを押えバネ３２の復元力に抗して上昇させる。つまり、浮上調節ネジ３３を右回動（締める）すると押え棒Ａｂが上昇し、左回動（緩める）すると押え棒Ａｂが下降し、押え圧調節ネジ３１と浮上調節ネジ３３との隙間を確認しながら圧力調整する。押え圧調節ネジ３１に取付けた固定ナット３４を緩め、押え圧調節ネジ３１を調節して、押えバネ３２のバネ圧を強弱調節する。   Further, the lifting adjustment screw 33 attached to the upper end of the presser bar Ab is brought into contact with the upper end of the presser pressure adjusting screw 31 and the presser bar Ab is raised against the restoring force of the presser spring 32 by the reaction force of the contact. That is, when the lifting adjustment screw 33 is rotated (tightened) to the right, the presser bar Ab is raised, and when it is rotated (loosened) to the left, the presser bar Ab is lowered, and the clearance between the presser pressure adjusting screw 31 and the lifting adjustment screw 33 is confirmed. While adjusting the pressure. The fixing nut 34 attached to the presser pressure adjusting screw 31 is loosened, the presser pressure adjusting screw 31 is adjusted, and the spring pressure of the presser spring 32 is adjusted.

図示実施例は上記の如く構成するものにして、以下、ミシン用押金圧調整装置１により被縫製物Ｂに付与される圧力を自動調整する動作を説明する。   The illustrated embodiment is configured as described above, and the operation of automatically adjusting the pressure applied to the sewing product B by the sewing machine pressure adjusting device 1 will be described below.

先ず、図１にも示すように、ミシンＡのアーム部Ａａに垂下した押え棒Ａｂを上下動させ、ミシン針Ａｃ直下の針落し位置に供給される被縫製物Ｂを、押え棒Ａｂ下端に取付けた押え金Ａｄで押圧する。   First, as shown in FIG. 1, the presser bar Ab suspended on the arm portion Aa of the sewing machine A is moved up and down, and the sewing product B supplied to the needle drop position immediately below the sewing needle Ac is placed at the lower end of the presser bar Ab. Press with the attached presser foot Ad.

次に、様々な素材の被縫製物Ｂを所望する縫い方で縫製するとき、ミシンＡの運転速度を、その被縫製物Ｂの素材及び縫い方に応じた速度に制御する。踏み板１４の踏み込む度合いに追従して低速から高速又は高速から低速に移行させ、その踏み込む度合いに応じてミシン用押金圧調整装置１を作動させ、被縫製物Ｂに押圧された押え金Ａｄの圧力を自動調整する。   Next, when the sewing material B of various materials is sewn in a desired sewing method, the operation speed of the sewing machine A is controlled to a speed corresponding to the material of the sewing material B and the sewing method. The pressure of the presser foot Ad pressed against the sewing product B is activated by shifting the low-speed to the high-speed or the high-speed to the low-speed according to the degree of depression of the tread plate 14 and operating the presser pressure adjusting device 1 for the sewing machine according to the degree of depression. Adjust automatically.

つまり、図３にも示すように、踏み板１４の踏み込む度合いに応じて、引きバネ５に組み込まれた押しバネ８が圧縮され、押しバネ８に蓄積された復元力により引きバネ５が引き下げられるとともに、ピットマン棒１８を介して、制御部２５の可変レバー２６が高速側に回動し、ミシンＡの運転速度が低速から高速に変化する。   That is, as shown in FIG. 3, the push spring 8 incorporated in the pull spring 5 is compressed according to the degree of depression of the tread plate 14, and the pull spring 5 is pulled down by the restoring force accumulated in the push spring 8. The variable lever 26 of the control unit 25 is rotated to the high speed side via the pitman bar 18, and the operating speed of the sewing machine A changes from low speed to high speed.

且つ、ワイヤー９上端が下方に引き下げられると、引きバネ５に組み込まれた押しバネ８が圧縮されるが、引きバネ５が押しバネ８に蓄積される復元力で引き下げ開始されるまでは、低速時に付与される圧力を吸収し、被縫製物Ｂを押圧する押え金Ａｄの圧力を弱くする。   When the upper end of the wire 9 is pulled downward, the push spring 8 incorporated in the pull spring 5 is compressed. However, until the pull spring 5 starts to be pulled down by the restoring force accumulated in the push spring 8, the speed is low. The pressure that is sometimes applied is absorbed, and the pressure of the presser foot Ad that presses the workpiece B is reduced.

続いて、押しバネ８に蓄積された復元力により引きバネ５が連動して引き下げられると、引きバネ５の引き下げ力が増加し、引きバネ５上端に固定した連結バー７に圧力が加えられる。その連結バー７に加えられた圧力は、押え金浮上装置３０の浮上調節ネジ３３に伝達され、ミシンＡの運転速度が低速から高速に移行するほど、その運転速度に比例して、被縫製物Ｂを押圧する押え金Ａｄの圧力が強くなる。   Subsequently, when the pulling spring 5 is pulled down in conjunction with the restoring force accumulated in the pressing spring 8, the pulling force of the pulling spring 5 increases and pressure is applied to the connecting bar 7 fixed to the upper end of the pulling spring 5. The pressure applied to the connecting bar 7 is transmitted to the lifting adjustment screw 33 of the presser foot floating device 30, and the sewing machine A increases in proportion to the operating speed as the operating speed of the sewing machine A shifts from low to high. The pressure of the presser foot Ad that presses B increases.

一方、図４にも示すように、被縫製物Ｂのアール部分や曲線部分を縫い付ける場合、ミシンＡの運転速度を高速から低速に変化させるが、踏み板１４に対する踏み込む力を弱めると、引きバネ５及び押しバネ８の復元力によりワイヤー９が引き上げられ、可変レバー２６が低速側に回動し、ミシンＡの運転速度が高速から低速に変化する。   On the other hand, as shown in FIG. 4, when sewing the rounded portion or the curved portion of the workpiece B, the operating speed of the sewing machine A is changed from a high speed to a low speed. 5 and the restoring force of the pressing spring 8 pulls up the wire 9 and the variable lever 26 rotates to the low speed side, so that the operating speed of the sewing machine A changes from high speed to low speed.

且つ、ミシンＡの運転速度が低速になるほど、引きバネ５上端に固定した連結バー７から圧力が取り除かれ、被縫製物Ｂを押圧する押え金Ａｄの圧力が低くなるため、ミシンＡの低速運転時に起きるような縫製不良現象、例えばパッカリング、生地のズレ、縫い目の不揃い、伸縮、変形等が起きることが無くなる。また、ミシン糸の糸切り作業は、ミシンＡの運転停止後（又はモーターの回転停止後）に行う。   Further, as the operating speed of the sewing machine A becomes lower, the pressure is removed from the connecting bar 7 fixed to the upper end of the tension spring 5 and the pressure of the presser foot Ad that presses the sewing product B becomes lower. Occasional sewing problems such as puckering, fabric misalignment, uneven seams, expansion / contraction, deformation, etc., which occur sometimes are eliminated. The thread cutting operation of the sewing thread is performed after the operation of the sewing machine A is stopped (or after the rotation of the motor is stopped).

以上のように、ミシンＡの運転速度に応じて、被縫製物Ｂに押圧された押え金Ａｄの圧力をミシン用押金圧調整装置１が自動調整するので、如何なる被縫製物Ｂも簡単且つ容易で、素材自体に負担を与えることなく、所望する縫い方で綺麗に縫製することができる。また、ミシンＡの運転速度が速くなるほど被縫製物Ｂに付与される圧力が高くなるので、高速運転時における縫製不良現象（又は地団太現象）を無くすことができる。また、アタッチメントに属するような簡単な装置でありながら、縫製時において生じる様々な問題を解消及び解決することができる。   As described above, according to the operating speed of the sewing machine A, the pressure of the presser foot Ad pressed against the sewing product B is automatically adjusted by the sewing machine pressure adjusting device 1, so that any sewing product B can be easily and easily performed. Thus, it is possible to sew beautifully with a desired sewing method without imposing a burden on the material itself. Further, since the pressure applied to the sewing object B increases as the operating speed of the sewing machine A increases, it is possible to eliminate the sewing failure phenomenon (or ground thickening phenomenon) during high-speed operation. Moreover, although it is a simple apparatus which belongs to an attachment, the various problems which arise at the time of sewing can be eliminated and solved.

また、ミシン用押金圧調整装置１を標準ミシンに装着すれば、作業者の経験及び熟練した技術により縫製されていた大半の被縫製物Ｂを、未熟な作業者であっても簡単且つ容易に縫製することができ、作業者に与える労力負担が軽減され、縫製作業が楽に行える。且つ、標準ミシンの機能が大幅に変えられるので、縫製精度及び縫製能力、商品価値、生産性を向上させることができる。   Further, if the presser pressure adjusting device 1 for a sewing machine is attached to a standard sewing machine, most of the sewing objects B that have been sewn by the experience and skill of the operator can be easily and easily obtained even by an unskilled operator. Sewing can be performed, the labor burden on the operator is reduced, and the sewing work can be performed easily. In addition, since the functions of the standard sewing machine can be significantly changed, it is possible to improve the sewing accuracy, sewing capacity, product value, and productivity.

また、ミシン用押金圧調整装置１と押え金浮上装置３０とを連結バー７により一体的に連結するだけであるので、ミシン用押金圧調整装置１をミシンＡに対して簡単且つ容易に取付けることができ、メンテナンスや調整操作が不要となるだけでなく、コンパクト、廉価の要点を満たすものとなる。   Moreover, since the presser pressure adjusting device 1 for the sewing machine and the presser foot floating device 30 are simply connected together by the connecting bar 7, the presser pressure adjusting device 1 for the sewing machine can be easily and easily attached to the sewing machine A. This not only eliminates the need for maintenance and adjustment operations, but also satisfies the main points of compactness and low cost.

また、ミシン用押金圧調整装置１と押え金浮上装置３０とを組み合わせることにより、例えば特殊ミシン、専用ミシン等が持つ機能を標準ミシンに対して簡単且つ容易に付加することができる。   Further, by combining the presser pressure adjusting device 1 for the sewing machine and the presser foot floating device 30, the functions of a special sewing machine, a dedicated sewing machine, etc. can be easily and easily added to the standard sewing machine.

また、ミシン用押金圧調整装置１と押え金浮上装置３０とを併用するよりも、一体的な装置として考えると押え金浮上装置３０の価値も一段とアップする。また、ミシン用押金圧調整装置１も格段の性能を内蔵する装置になり、縫製のエキスパートとして理解できる装置性能であることが明確である。   Further, the value of the presser foot floating device 30 is further increased when considered as an integrated device rather than using the presser foot pressure adjusting device 1 for the sewing machine and the presser foot floating device 30 together. Further, it is clear that the sewing machine pressure adjusting device 1 is also a device incorporating a remarkable performance, and the device performance can be understood as an expert of sewing.

ミシン用押金圧調整装置の装着状態を示す側面図。The side view which shows the mounting state of the presser pressure adjusting device for sewing machines. 踏み板の取付け状態を示す側面図。The side view which shows the attachment state of a tread board. ミシン低速運転時の圧力付加状態を示す側面図。The side view which shows the pressure addition state at the time of a sewing machine low speed driving | operation. ミシン高速運転時の圧力付加状態を示す側面図。The side view which shows the pressure addition state at the time of sewing machine high speed operation.

符号の説明Explanation of symbols

Ａ…ミシン
Ａａ…アーム部
Ａｂ…押え棒
Ａｄ…押え金
Ａｅ…ミシン台
Ｂ…被縫製物
１…ミシン用押金圧調整装置
２…外筒
３…内筒
４…取付け台
５…引きバネ
７…連結バー
８…押しバネ
９…ワイヤー
１０…受け部材
１４…踏み板
１８…ピットマン棒
２５…制御部
２６…可変レバー
３０…押え金浮上装置
３１…押え圧調節ネジ
３２…押えバネ
３３…浮上調節ネジ
３４…固定ナット
A ... Sewing machine Aa ... Arm part Ab ... Presser bar Ad ... Presser foot Ae ... Sewing machine base B ... Sewing material 1 ... Sewing machine pressure adjusting device 2 ... Outer cylinder 3 ... Inner cylinder 4 ... Mounting base 5 ... Pulling spring 7 ... Connecting bar 8 ... Pressing spring 9 ... Wire 10 ... Receiving member 14 ... Treading plate 18 ... Pitman rod 25 ... Control unit 26 ... Variable lever 30 ... Presser foot lifting device 31 ... Presser pressure adjusting screw 32 ... Presser spring 33 ... Floating adjusting screw 34 ... Fixing nut

Claims (4)

ミシンのアーム部に垂下された押え棒上端に浮上調節ネジと押え圧調節ネジを互いに当接して取付け、該当接の反力により押え棒を押えバネに抗して上昇させる押え金浮上装置を備え、
上記ミシンのアーム部に対して上記押え棒と平行して取付けられた外筒の上端側開口部に、上記浮上調節ネジを加圧するための引きバネが装填された内筒を上下動可能に挿入保持し、
上記外筒上端に突出する内筒上端に固定した連結バーの端部を、上記浮上調節ネジの上端に当接又は連結し、
上記引きバネ上端を上記内筒の上端側内部に固定し、該引きバネの下端側中心部にワイヤー上端を係止して、
上記外筒下端から引き出されたワイヤーと、上記ミシンの駆動を制御する制御部とを、該ミシンの運転速度を可変する踏み板に連結した
ミシン用押金圧調整装置。 Equipped with a presser foot levitation device that lifts the presser bar against the presser spring by the reaction force of the corresponding contact with the lifting adjustment screw and presser pressure adjustment screw attached to the upper end of the presser bar suspended from the arm of the sewing machine. ,
An inner cylinder loaded with a tension spring for pressurizing the levitation adjusting screw is inserted into the upper end side opening of the outer cylinder attached in parallel with the presser bar to the arm part of the sewing machine so as to move up and down. Hold and
The end of the connecting bar fixed to the upper end of the inner cylinder protruding from the upper end of the outer cylinder is in contact with or connected to the upper end of the levitation adjustment screw,
The upper end of the tension spring is fixed inside the upper end side of the inner cylinder, and the upper end of the wire is locked to the lower end side center of the tension spring,
A sewing machine pressure adjusting device in which a wire drawn out from the lower end of the outer cylinder and a control unit for controlling the driving of the sewing machine are connected to a tread plate that varies the operating speed of the sewing machine. 上記引きバネ内に組み込まれた押しバネ下端を、該引きバネ下端に固定した受け部材に当接し、
上記受け部材の中心部に挿通したワイヤー上端を、上記押しバネ上端に固定した
請求項１に記載のミシン用押金圧調整装置。 A lower end of a push spring incorporated in the tension spring is brought into contact with a receiving member fixed to the lower end of the tension spring;
The pressurizing pressure adjusting device for a sewing machine according to claim 1, wherein the upper end of the wire inserted through the central portion of the receiving member is fixed to the upper end of the push spring. 上記引きバネの復元力を、上記押しバネが圧縮されたときに蓄積された復元力で下方に引き下げられるような強さに設定した
請求項１又は２に記載のミシン用押金圧調整装置。 3. The pressurizing pressure adjusting device for a sewing machine according to claim 1, wherein the restoring force of the tension spring is set to a strength that can be lowered downward by the restoring force accumulated when the pressing spring is compressed. 上記押しバネを、上記引きバネが引き下げ開始されるまで圧縮されるような強さに設定した
請求項１又は２に記載のミシン用押金圧調整装置。
The pressurizing pressure adjusting device for a sewing machine according to claim 1 or 2, wherein the pressing spring is set to have such a strength as to be compressed until the pulling spring starts to be pulled down.
JP2004357520A 2004-12-10 2004-12-10 Presser pressure adjusting device for sewing machine Expired - Fee Related JP3872807B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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JP3872807B2 JP3872807B2 (en) 2007-01-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106637710A (en) * 2016-12-16 2017-05-10 浙江中捷缝纫科技有限公司 Foot pressure driving device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111235775B (en) * 2020-01-20 2021-09-24 浙江众邦机电科技有限公司 Industrial sewing machine and control system thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106637710A (en) * 2016-12-16 2017-05-10 浙江中捷缝纫科技有限公司 Foot pressure driving device
CN106637710B (en) * 2016-12-16 2023-01-03 浙江中捷缝纫科技有限公司 Presser foot drive arrangement

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