JP3135782U - Tension relief device for embroidery machine - Google Patents
Tension relief device for embroidery machine Download PDFInfo
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- JP3135782U JP3135782U JP2007005496U JP2007005496U JP3135782U JP 3135782 U JP3135782 U JP 3135782U JP 2007005496 U JP2007005496 U JP 2007005496U JP 2007005496 U JP2007005496 U JP 2007005496U JP 3135782 U JP3135782 U JP 3135782U
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Abstract
【課題】刺繍糸が刺繍針の穴での接触角度を増加させることによって刺繍中の刺繍糸と刺繍針の穴との摩擦力を減少させて、刺繍糸の刺繍中に生じる高過ぎる張力を緩和し、糸切れの発生を減少させることが可能な刺繍機の張力緩和装置を提供する。
【解決手段】刺繍機の張力緩和装置では、角度βを調節し増大させるバネ板２２と、糸経路部２３を含む。板バネ２２は、針棒２０又は布押え１０と連動するように針棒２０に取り付けられ、かつ、針棒２０から上糸２１の方向へ突出し、上糸２１は、糸経路部２３によって刺繍針から離れる方向に所定の角度に支えられて、刺繍糸が刺繍針の穴を通る前における刺繍針との間の角度βを増大させる。
【選択図】図４The embroidery thread reduces the frictional force between the embroidery thread and the embroidery needle hole during embroidery by increasing the contact angle of the embroidery needle at the hole of the embroidery needle, and alleviates excessive tension generated during embroidery of the embroidery thread. And a tension relief device for an embroidery machine capable of reducing the occurrence of thread breakage.
A tension relief device for an embroidery machine includes a spring plate 22 for adjusting and increasing an angle β, and a thread path portion 23. The leaf spring 22 is attached to the needle bar 20 so as to interlock with the needle bar 20 or the presser foot 10 and protrudes from the needle bar 20 in the direction of the upper thread 21. The angle β between the embroidery thread and the embroidery needle before it passes through the hole of the embroidery needle is increased by being supported at a predetermined angle away from the embroidery thread.
[Selection] Figure 4
Description
本考案は、多頭式コンピュータ刺繍機に設けた刺繍糸の張力緩和装置に関し、より具体的に言えば、刺繍針の穴において刺繍糸との接触角度を変えることによって、刺繍糸と刺繍針との摩擦を減少させ、高張力の発生を減少可能であり、構造の簡単な機械式の装置に関するものである。 The present invention relates to an embroidery thread tension relaxation device provided in a multi-head computer embroidery machine, and more specifically, by changing the contact angle between the embroidery thread and the embroidery thread at the hole of the embroidery needle. The present invention relates to a mechanical device with a simple structure that can reduce friction and reduce the occurrence of high tension.
多頭式コンピュータ刺繍技術について、図１に示す多頭式コンピュータ刺繍機の図面を用いて簡単に説明する。この多頭式コンピュータ刺繍機では、刺繍機に設置されたスレッドスプール（thread spool）１における刺繍糸を、刺繍機のヘッド１２に案内し、天秤レバー（take-up lever）１３と刺繍針１４の上下往復運動に合わせて、刺繍針１４及び刺繍糸が一緒に原反布を貫通して、ボビン１６から供給された下糸と互いに絡み合ってロックステッチ（lock-stitch）を生成する。刺繍模様の形成において、ｘ及びｙ方向の同期モータで刺繍枠１５を駆動するとともに、刺繍針の上下運動に合わせて一連のロックステッチを形成することによって、コンピュータで生じた模様を形成する。 The multi-head computer embroidery technique will be briefly described with reference to the drawing of the multi-head computer embroidery machine shown in FIG. In this multi-head computer embroidery machine, the embroidery thread in a thread spool 1 installed in the embroidery machine is guided to the head 12 of the embroidery machine, and the take-up lever 13 and the embroidery needle 14 are moved up and down. In accordance with the reciprocal movement, the embroidery needle 14 and the embroidery thread pass through the raw fabric together and entangle with the lower thread supplied from the bobbin 16 to generate a lock-stitch. In forming the embroidery pattern, the embroidery frame 15 is driven by a synchronous motor in the x and y directions, and a series of lock stitches are formed in accordance with the vertical movement of the embroidery needle, thereby forming a computer-generated pattern.
周知のように、刺繍の品質は、ロックステッチの張力が適当であるかどうかによって決められる。張力が小さ過ぎると、形成された模様がばらばらになり、逆に張力が大きすぎると、ロックステッチが硬くなり過ぎ、かつ刺繍糸が刺繍の過程において糸切れする確率を高める。 As is well known, the quality of embroidery is determined by the appropriate tension of the lock stitch. If the tension is too small, the formed pattern is scattered, and conversely if the tension is too large, the lock stitch becomes too hard and the probability that the embroidery thread breaks during the embroidery process is increased.
刺繍機の張力システムは、簡易的に以下のように説明することができる。図２に示すように、スレッドスプール1からの糸を、プリテンション手段（pre-tensioner）２に案内させ、プリテンションを加えてから、このプリテンション手段２からテンション手段（tensioner）３に入って糸を緊張させ、スプリングフック（spring hook）４を介して針棒箱（needle bar case）５に案内させ、この針棒箱５に設置された天秤レバー６によって所定の糸を刺繍針９に案内させる。さらに、天秤レバー６からの糸を、上糸２１（upper thread）として低位糸ガイド（lower thread guide）７から刺繍針の穴に貫通し、下糸ボビン（under thread bobbin）８からの下糸と共に布押え（presser foot）１０によって織物にロックステッチ３０を形成する。そのため、刺繍の過程には、刺繍機において、様々な要素の影響によって、刺繍糸の張力を向上させ、張力が緩和されない場合に、刺繍糸は切れてしまう。刺繍糸が切れた場合には、刺繍機を一時停止して糸を通し、その後に刺繍機を起動して先程の糸切れの部分を補足し刺繍する必要があるので、多くの無駄な生産時間を浪費し、生産効率を低下させる。 The tension system of the embroidery machine can be simply described as follows. As shown in FIG. 2, the thread from the thread spool 1 is guided to a pre-tensioner 2 and applied with a pretension, and then the tensioner 3 enters the tensioner 3 from the pretensioner 2. The thread is tensioned and guided to a needle bar case 5 via a spring hook 4, and a predetermined thread is guided to the embroidery needle 9 by a balance lever 6 installed in the needle bar box 5. Let Further, the thread from the balance lever 6 is passed through the hole of the embroidery needle from the lower thread guide 7 as an upper thread 21 (upper thread) and together with the lower thread from the under thread bobbin 8 A lock stitch 30 is formed in the fabric by a presser foot 10. For this reason, in the embroidery process, the embroidery thread breaks when the tension of the embroidery thread is improved by the influence of various factors in the embroidery machine and the tension is not relaxed. When the embroidery thread breaks, it is necessary to pause the embroidery machine to pass the thread, and then start the embroidery machine to supplement and embroidery the previous thread breakage, so a lot of wasted production time Wastes the production efficiency.
そのため、糸切れの発生を減少させるように、ソフトウエアプログラムで刺繍針の経路を変更することによって針と糸との摩擦の減少を図る手段が提案されているが、刺繍糸と刺繍針との間の摩擦状態を的確に解決することができない。かつ、刺繍模様の設計は様々であり、模様の設計員は、予め糸切れを防ぐための経路を判断する技能を必ずしも有していない。また、下糸ボビンの面から改善する方策もある。下糸と上糸とは原反布にロックステッチを形成し、原反布は柔軟なものであり、下糸に高い張力を生じた時、原反布は多少変形して、生じた高い張力を緩和しているが、刺繍糸と刺繍針とが高い張力で刺繍針の穴に生じた摩擦力を解消しないので、刺繍糸の糸切れを避けることができない。 Therefore, means for reducing friction between the needle and the thread by changing the path of the embroidery needle with a software program so as to reduce the occurrence of thread breakage has been proposed. The frictional condition between them cannot be solved accurately. And the design of an embroidery pattern is various, and the design designer does not necessarily have the skill to judge the path | route for preventing thread breakage beforehand. There is also a measure to improve from the surface of the bobbin bobbin. The lower thread and upper thread form a lock stitch on the original fabric, and the original fabric is flexible. When high tension is applied to the lower thread, the original fabric is slightly deformed and the high tension generated. However, since the frictional force generated in the hole of the embroidery needle is not eliminated by high tension between the embroidery thread and the embroidery needle, the thread breakage of the embroidery thread cannot be avoided.
糸切れの発生は、刺繍糸の抗張力がその限界値を超えたからであり、特に高速で刺繍するときに、より頻繁に発生する。多種の要素により影響されるので、刺繍糸の張力に対する制御は非常に難しい。刺繍糸の粗さが均一でないこと、原反布の厚さが一致でないこと、刺繍糸の震動などの要素は、刺繍糸の糸切れに影響を与える可能性のある要素である。刺繍中において刺繍糸の張力を低下させることができれば、糸切れ率は対応して低下する。しかしながら、係る考察は刺繍糸の動力原理及び特性に関わるので、刺繍工業の分野において、今日まで、糸切れ率を低下させる有効な方法が見出されていない。 The occurrence of thread breakage is because the tensile strength of the embroidery thread has exceeded its limit value, and it occurs more frequently, especially when embroidery at high speed. Since it is influenced by various factors, it is very difficult to control the tension of the embroidery thread. Elements such as unevenness of the embroidery thread, unevenness of the thickness of the raw fabric, and vibration of the embroidery thread are elements that may affect the thread breakage of the embroidery thread. If the tension of the embroidery thread can be reduced during embroidery, the thread breakage rate is correspondingly reduced. However, since such considerations relate to the power principle and characteristics of the embroidery thread, no effective method for reducing the thread breakage rate has been found in the embroidery industry to date.
高速撮影機で撮像した一連の糸切れ画像を分析することによって、大部分の糸切れは、刺繍糸と刺繍針の穴との間に発生することが分かる。数学モデルを作成して分析、計算及び試験検証することによって、刺繍糸と刺繍針の穴との接触角度は、非常に重要な糸切れの要素であることを確認できる。一般的に、張力を調節する装置は、上糸の経路に設けられ、刺繍針の穴から遠く離れ、刺繍中には、下糸の張力は各種の要素に従って遷移して、調節され得ないようになる。
本考案は、刺繍糸が刺繍針の穴での接触角度を増加させることによって刺繍中の刺繍糸と刺繍針の穴との摩擦力を減少させて、刺繍糸の刺繍中に生じる高過ぎる張力を緩和し、糸切れの発生を減少させることが可能な刺繍機の張力緩和装置を提供することを目的とする。 The present invention reduces the frictional force between the embroidery thread during embroidery and the hole of the embroidery needle by increasing the contact angle of the embroidery thread at the hole of the embroidery needle, thereby reducing the excessive tension generated during embroidery of the embroidery thread. An object of the present invention is to provide a tension relaxation device for an embroidery machine that can relax and reduce the occurrence of thread breakage.
本考案は刺繍機の張力緩和装置であって、拡角装置を備え、この拡角装置は、刺繍機に設置され、刺繍糸を刺繍針から離れる方向に支え、この拡角装置と刺繍糸とを当接することによって、刺繍糸が刺繍針の穴を通る前における刺繍針との角度を増大させることを特徴とする。 The present invention is a tension relief device for an embroidery machine, and includes a widening device, which is installed in the embroidery machine and supports the embroidery thread in a direction away from the embroidery needle. The angle between the embroidery thread and the embroidery needle before passing through the hole of the embroidery needle is increased.
前記拡角装置は、針棒箱又はケースと一体に構成された糸経路部であることが好ましい。
前記拡角装置は、針棒に設置されて上下に滑り可能な縦方向移動装置であることが好ましい。
前記拡角装置は、針棒箱又はその付近の空の位置から刺繍糸が刺繍針から離れる方向に所定の角度に支えられる現在の刺繍位置まで横方向に滑る横方向移動突出装置であることが好ましい。
前記拡角装置は、バネ板、伸張／圧縮バネ、横方向移動突出装置の一つ又は二つ以上の組み合わせであることが好ましい。
It is preferable that the angle expansion device is a thread path portion configured integrally with a needle bar box or a case.
It is preferable that the angle expansion device is a longitudinal movement device that is installed on a needle bar and can slide up and down.
The angle expansion device is a laterally moving projection device that slides laterally from an empty position in or near the needle bar box to the current embroidery position where the embroidery thread is supported at a predetermined angle in a direction away from the embroidery needle. preferable.
The angle expansion device is preferably one or a combination of two or more of a spring plate, an extension / compression spring, and a lateral movement protrusion device.
本考案によれば、張力緩和装置と針棒と協力して運動し、簡単な機械構造で刺繍糸と刺繍針の穴との接触角度を変える。この角度は原反布にとても近付く位置に生じ、下糸通路の張力を調節し、高い張力点の発生を減少させるので、糸切れの発生を明らかに減少させる効果をもたらす。本考案によれば、刺繍糸が刺繍中に生じた高い張力点を減少させ、糸切れの発生を減少させることによって、生産性を向上させることができる。 According to the present invention, the tension relief device and the needle bar move in cooperation to change the contact angle between the embroidery thread and the embroidery needle hole with a simple mechanical structure. This angle is generated at a position very close to the raw fabric, and adjusts the tension of the lower thread passage and reduces the occurrence of a high tension point, thus effectively reducing the occurrence of thread breakage. According to the present invention, the productivity can be improved by reducing the high tension point generated during the embroidery thread and reducing the occurrence of thread breakage.
本考案は、従来の問題の核心を簡単に改善でき、刺繍糸と刺繍針とが高い張力で刺繍針の穴に生じた摩擦力を低下させ、容易に刺繍機に適用される利点がある。 The present invention can easily improve the core of the conventional problem, and has an advantage that the embroidery thread and the embroidery needle can be easily applied to the embroidery machine by reducing the frictional force generated in the hole of the embroidery needle with high tension.
本考案は、多頭式コンピュータ刺繍機に適用され、刺繍糸と刺繍針との接触角度を調整して摩擦力を減少させることによって、糸切れを減少させ、停止時間を減少させるので、生産性を向上させることができ、市場未来性を具備する。 The present invention is applied to a multi-head computer embroidery machine and adjusts the contact angle between the embroidery thread and the embroidery needle to reduce the frictional force, thereby reducing thread breakage and reducing the stop time. It can be improved and has market future potential.
本考案は、刺繍糸の刺繍中の運動から糸切れを分析する。以下、図面を参照しながら本考案を詳しく説明する。図１〜図２を含めた各図において、同一の構成要素には、同一の符号を付し、重複する説明を省略する。図３は、簡略化した刺繍糸の動力モデルであり、分析によって、刺繍糸と刺繍針の接触角は、高い張力の発生に大きく関係することを確認できた。試験結果に基づき、刺繍糸と刺繍針との接触角を増加することによって、高い張力の発生を減少することができるので、刺繍がよりなめらかになることが証明できた。 The present invention analyzes thread breakage from embroidery thread movement during embroidery. Hereinafter, the present invention will be described in detail with reference to the drawings. In each of the drawings including FIGS. 1 to 2, the same components are denoted by the same reference numerals, and redundant description is omitted. FIG. 3 shows a simplified embroidery thread power model, and it was confirmed by analysis that the contact angle between the embroidery thread and the embroidery needle is greatly related to the generation of high tension. Based on the test results, it was proved that the embroidery becomes smoother by increasing the contact angle between the embroidery thread and the embroidery needle, since the generation of high tension can be reduced.
図３に示す従来の刺繍機の接触角αが小さ過ぎて、高い張力を生じ、糸切れ率が増加する。糸切れ率を改善するために、接触角αを増大させる必要がある。実際的な測定において、接触角αを測定することは難しい。しかし、刺繍糸（上糸）と刺繍針とがなす角度βは、測定し易く、かつ、上記接触角αに関連するものである。そのため、付加した小さい装置で角度βを増大させることにより目的を達することができ、刺繍糸が原反布に刺し込まれる前に大きい接触角を有するとともに、刺繍針及び布押えの上下運動に影響を与えないようにできる。 The contact angle α of the conventional embroidery machine shown in FIG. 3 is too small, causing high tension and increasing the thread breakage rate. In order to improve the yarn breakage rate, it is necessary to increase the contact angle α. In practical measurement, it is difficult to measure the contact angle α. However, the angle β formed by the embroidery thread (upper thread) and the embroidery needle is easy to measure and is related to the contact angle α. Therefore, the objective can be achieved by increasing the angle β with a small device added, and has a large contact angle before the embroidery thread is pierced into the original fabric, and also affects the vertical movement of the embroidery needle and the presser foot. Can not be given.
図４（ａ）には、本考案の拡角装置を取り付けない一般の刺繍機を示し、かつ刺繍糸が刺繍針の穴を通る前における刺繍針との間の角度が示されている。図４（ｂ）には、本考案の一つの例が示されている。本考案の拡角装置として用いられ、角度βを調節し増大させるバネ板２２は一例として示される。このバネ板２２は、糸経路部２３を含み、針棒２０又は布押え１０と連動するように針棒２０に取り付けられ、かつ、針棒２０から上糸２１の方向へ突出し、上糸２１は、上記糸経路部２３によって刺繍針から離れる方向に所定の角度に支えられて、刺繍糸が刺繍針の穴を通る前における刺繍針との間の角度βを増大させる。 FIG. 4 (a) shows a general embroidery machine to which the angle expansion device of the present invention is not attached, and the angle between the embroidery thread and the embroidery needle before passing through the hole of the embroidery needle. FIG. 4B shows an example of the present invention. The spring plate 22 that is used as the angle expansion device of the present invention and adjusts and increases the angle β is shown as an example. The spring plate 22 includes a thread path portion 23, is attached to the needle bar 20 so as to be interlocked with the needle bar 20 or the presser foot 10, and protrudes from the needle bar 20 toward the upper thread 21. The thread path 23 is supported at a predetermined angle in a direction away from the embroidery needle, and the angle β between the embroidery thread and the embroidery needle before passing through the hole of the embroidery needle is increased.
また、本考案の拡角装置は以下の構成で設置されてもよい。図５に示すように、針棒箱又はケースと一体に結合する糸経路部２４として設置されてもよい。この糸経路部２４は上糸２１の方向へ突出し、上糸２１を刺繍針から離れる方向に引き出し所定の角度に支えており、上記角度βを増大させる機能を担っている。 Moreover, the angle expansion device of this invention may be installed with the following structures. As shown in FIG. 5, it may be installed as a thread path portion 24 that is integrally coupled to the needle bar box or the case. This thread path portion 24 protrudes in the direction of the upper thread 21, pulls the upper thread 21 away from the embroidery needle and supports it at a predetermined angle, and has a function of increasing the angle β.
又、図６に示すように、針棒箱又はケースに縦方向に傾斜する滑り溝２６を設置してもよい。縦方向移動装置２５の一端はこの滑り溝内に移動し、他端は上糸２１に当接して、上糸２１が刺繍針から離れる方向に引き出し所定の角度に支えており、かつ、縦方向移動装置２５の一端が滑り溝２６内を上下に摺動して増大の角度を変更する。 Moreover, as shown in FIG. 6, you may install the sliding groove | channel 26 which inclines in a vertical direction in a needle bar box or a case. One end of the longitudinal movement device 25 moves into the sliding groove, the other end abuts on the upper thread 21, the upper thread 21 is pulled away from the embroidery needle and supported at a predetermined angle, and the longitudinal direction One end of the moving device 25 slides up and down in the sliding groove 26 to change the increase angle.
更に、図７に示すように、針棒箱又はその付近の空の位置から針棒上に横方向に突出し、刺繍糸が刺繍針から離れる方向に押し出し所定の角度に支える図示の刺繍位置まで横方向に滑る横方向移動突出装置により拡角装置を構成することができ、係る構成は例えばトランクピストン機構２７を設置して実現してもよい。この横方向移動突出装置は、上糸２１を刺繍針から離れる方向に押し出し所定の角度に支えて上記角度βを増大させ、かつ、トランクピストンの移動によって刺繍糸が刺繍針の穴を通る前における刺繍針との角度を変更することによって、この角度を適当な角度にする。 Further, as shown in FIG. 7, the needle bar box protrudes laterally from the empty position of the needle bar box or the vicinity thereof onto the needle bar, and the embroidery thread is pushed away from the embroidery needle to the illustrated embroidery position supported at a predetermined angle. The angle expansion device can be constituted by a laterally moving projection device that slides in the direction, and such a configuration may be realized by installing a trunk piston mechanism 27, for example. This laterally moving projecting device pushes the upper thread 21 away from the embroidery needle to support the predetermined angle to increase the angle β, and before the embroidery thread passes through the hole of the embroidery needle by the movement of the trunk piston. By changing the angle with the embroidery needle, this angle is set to an appropriate angle.
これらにおいて、上記角度βの適当な値は、異なる装置の材料の特性、例えば摩擦力、厚さ及び天秤レバーの刺繍糸ストローク等によって決まるが、本願考案は、単に上記糸と針との接触角度を変更することに限られなく、例えば、機械構造において上記接触角度を改善すること及び／又は新たな機器を用いて達成することも可能であり、係る変形例は、本考案の範囲内に含まれる。 In these, the appropriate value of the angle β is determined by material characteristics of different devices, such as frictional force, thickness, and the embroidery thread stroke of the balance lever. However, the present invention is merely a contact angle between the thread and the needle. For example, the contact angle can be improved in a mechanical structure and / or achieved by using a new device, and such modifications are included in the scope of the present invention. It is.
本考案に係る刺繍糸が刺繍針の穴を通る前における刺繍針との間の角度を増大させる拡角装置は、刺繍機上に、又はその内部に設置することができる。本願考案は、上記各構成を組み合わせて具備する多頭式コンピュータ刺繍機を含む。 The angle expansion device for increasing the angle between the embroidery thread and the embroidery needle before the embroidery thread passes through the hole of the embroidery needle according to the present invention can be installed on or inside the embroidery machine. The invention of the present application includes a multi-head computer embroidery machine having a combination of the above components.
1 スレッドスプール
２ プリテンション手段
３ テンション手段
４ スプリングフック
５ 針棒箱
６ 天秤レバー
９ 刺繍針
１２ ヘッド
１４、１５ 刺繍枠
１６ ボビン
２０ 針棒
２１ 上糸
２２ バネ板
２３、２４ 糸経路部
２５ 縦方向移動装置
２６ 溝
２７ トランクピストン機構
３０ ロックステッチ
α 接触角
β 角度
1 Thread spool 2 Pretensioning means 3 Tensioning means 4 Spring hook 5 Needle bar box 6 Balance lever 9 Embroidery needle 12 Heads 14 and 15 Embroidery frame 16 Bobbin 20 Needle bar 21 Upper thread 22 Spring plate 23 and 24 Thread path section 25 Vertical direction Moving device 26 Groove 27 Trunk piston mechanism 30 Lock stitch α Contact angle β Angle
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007005496U JP3135782U (en) | 2007-07-18 | 2007-07-18 | Tension relief device for embroidery machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007005496U JP3135782U (en) | 2007-07-18 | 2007-07-18 | Tension relief device for embroidery machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3135782U true JP3135782U (en) | 2007-09-27 |
Family
ID=43286261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007005496U Expired - Fee Related JP3135782U (en) | 2007-07-18 | 2007-07-18 | Tension relief device for embroidery machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3135782U (en) |
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2007
- 2007-07-18 JP JP2007005496U patent/JP3135782U/en not_active Expired - Fee Related
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