WO2019202736A1 - Bobbin, and thread wound around bobbin - Google Patents

Bobbin, and thread wound around bobbin Download PDF

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Publication number
WO2019202736A1
WO2019202736A1 PCT/JP2018/016314 JP2018016314W WO2019202736A1 WO 2019202736 A1 WO2019202736 A1 WO 2019202736A1 JP 2018016314 W JP2018016314 W JP 2018016314W WO 2019202736 A1 WO2019202736 A1 WO 2019202736A1
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Prior art keywords
bobbin
thread
yarn
wound around
sewing
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PCT/JP2018/016314
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French (fr)
Japanese (ja)
Inventor
俊也 鈴木
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サンエス株式会社
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Priority to PCT/JP2018/016314 priority Critical patent/WO2019202736A1/en
Publication of WO2019202736A1 publication Critical patent/WO2019202736A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/12—Kinds or types of circular or polygonal cross-section with a single end flange (e.g. with a conical end flange); formed with one end of greater diameter than the barrel

Definitions

  • the present invention relates to a bobbin for winding a thread used for sewing an airbag and a thread wound around the bobbin.
  • Automobile airbags are manufactured by sewing the cut fabric with an industrial sewing machine.
  • a sewing thread used for sewing is wound around a bobbin and loaded into an industrial sewing machine.
  • the sewing thread is colored in a different color from the fabric to facilitate quality inspection of the sewing.
  • the airbag is colored in a different color for each thickness.
  • the sewing thread wound around the bobbin is finished during the production of one airbag and is replaced with the next bobbin, the sewing thread is divided during the sewing. So it is not allowed for quality. Therefore, if it is determined that the remaining amount of the bobbin sewing thread is less than the amount used for one airbag, the bobbin sewing thread is discarded even though the sewing thread remains.
  • Patent Document 1 discloses a thread bobbin. This thread bobbin is reused, and is provided with a cutter groove for removing the wound thread remaining on the bobbin removed after use by cutting with a cutter or the like.
  • Patent Document 2 discloses a method for manufacturing an airbag sewing thread. This yarn is obtained by twisting a polyester or nylon 66 multifilament yarn, and simultaneously performing coloring and resin processing, followed by drying and heat treatment.
  • the frequency of replacing the bobbin increases, and production cannot be performed during the replacement, resulting in a decrease in production efficiency.
  • the amount of sewing thread to be discarded increases accordingly.
  • the outer diameter of the bobbin around which the sewing thread is wound is small, a curl will be formed on the inner side of the wound sewing thread.
  • This winding rod places an excessive load on the sewing thread that passes through the inside of the industrial sewing machine and causes malfunction of the industrial sewing machine.Therefore, even if there is still a thread sufficient for sewing the airbag, the bobbin must be replaced. There is a problem that the thread may be discarded.
  • the present invention has been made in view of the above-mentioned actual situation, and by reducing the frequency of replacing the bobbin, even in the inner part of the sewing thread wound around the bobbin,
  • An object of the present invention is to provide a bobbin and a thread wound around a bobbin that prevent a decrease in production efficiency, reduce sewing thread to be discarded, and prevent malfunction of an industrial sewing machine.
  • the bobbin according to the present invention comprises: A bobbin for winding a thread used for sewing an airbag,
  • the bobbin has a barrel portion having a cylindrical shape, and a flange portion having a funnel shape on one side of the barrel portion,
  • the outer diameter of the barrel is 45-60 mm.
  • the inner diameter of the barrel is 20 to 40 millimeters.
  • the yarn according to the present invention comprises: The bobbin is wound, and the wound weight is 1500 to 3000 grams.
  • the yarn is colored by applying a colored resin.
  • the outer diameter of the bobbin around which the sewing thread is wound is large, it is possible to provide a sewing thread free of curling habits, thereby preventing malfunction of the industrial sewing machine.
  • the replacement frequency of the bobbin can be lowered, and the production efficiency of the airbag can be improved.
  • the amount of sewing thread to be discarded can be reduced.
  • FIG. 1 is a front view of the appearance of the bobbin 10 and the yarn 50 wound around the bobbin 10
  • FIG. 2 is a cross-sectional view of the bobbin 10 and the yarn 50 wound around the bobbin 10.
  • the bobbin 10 includes a barrel portion 20 having a cylindrical shape, and a flange portion 30 having a funnel shape formed at one end of the barrel portion 20.
  • the bobbin 10 is made of a resin such as polypropylene, but may be made of other materials such as wood or metal.
  • the length L1 of the body 20 is 150 to 200 mm.
  • the outer diameter D2 of the trunk portion 20 is 45 to 60 mm in diameter.
  • the inner diameter D1 of the trunk 20 is 2 to 6 millimeters smaller than the outer diameter D2.
  • drum 20 is demonstrated.
  • the yarn 50 wound around the bobbin 10 is tightly wound so as not to loosen during transportation. Therefore, when the outer diameter D ⁇ b> 2 of the trunk portion 20 is small, a curl is attached to the thread 50 wound around the outer periphery of the trunk portion 20.
  • the outer diameter of a portion where a general bobbin is wound is 20 to 30 millimeters. It has been found that the inner part of the yarn wound around the bobbin has a curl. For this reason, when the airbag is sewn with an industrial sewing machine, the thread with a curl is subjected to an excessive load from the threading portion of the industrial sewing machine. As a result, troubles such as thread breakage or entanglement tend to occur.
  • the outer diameter D2 of the present embodiment is 45 to 60 millimeters, it has been found that no curl occurs.
  • the length L1 of the trunk portion 20 is longer than the length L2 around which the yarn 50 is wound. That is, the wound yarn 50 is set so as not to protrude from the body portion 20.
  • the inner diameter D1 is set so that the overall thickness is the same for the convenience of resin molding.
  • the outer diameter of the connection portion of the flange portion 30 with the trunk portion 20 is the same as the outer diameter of the trunk portion 20.
  • the flange portion 30 gradually increases in outer diameter from the connecting portion of the body portion 20 toward the outside, and the outer diameter D3 of the most widened portion is 140 to 180 millimeters.
  • the outer diameter D3 is larger than the maximum winding thickness of the yarn 50 so that the yarn 50 does not protrude from the end of the flange portion 30 when the yarn 50 is wound.
  • the thread 50 is wound around the bobbin 10.
  • the yarn 50 is wound without a gap from the joint portion of the body portion 20 to the flange portion 30 to a predetermined position from the end of the end portion on the flange-free side, that is, in the range of the winding length L2. .
  • the yarn 50 is wound around the flange portion 30 as the yarn 50 is wound around the body portion 20 and the winding diameter of the yarn 50 increases.
  • the end portion of the winding length L2 is always present on the surface of the flange portion 30.
  • the winding length L2 does not change. Therefore, the upper shape of the thread 50 wound around the bobbin and the outer peripheral shape of the flange portion 30 are similar.
  • the yarn 50 wound around the bobbin is generally represented by the weight of the wound yarn 50.
  • the wound weight of the yarn 50 is 1500 to 3000 grams.
  • the length of the wound yarn 50 depends on the thickness of the yarn, that is, the weight per unit length, but is, for example, 10,000 to 30,000 meters.
  • the sewing thread material for the airbag is made of polyester or nylon 66 or the like.
  • the multifilament yarn is twisted and then colored by dyeing.
  • This coloring operation is a process in which a multifilament yarn is wound around a dyeing tool, dyed by a dyeing device, and dried after dyeing.
  • a dyeing tool has a limitation on the length of a thread to be wound in order to perform uneven dyeing. This limitation prevents the production of sewing threads for long airbags.
  • a transparent resin is applied to the multifilament yarn, dried and heat-treated to form a sewing thread for an airbag.
  • the airbag yarn 50 used in the embodiment of the present invention does not require coloring by dyeing. This is because a sewing thread for a general airbag needs to be coated with a transparent resin, so that a sewing thread for an airbag colored in a predetermined color by making this resin a colored resin.
  • the method of manufacturing is used. In this method, since the coloring of the yarn is performed by applying a colored resin, a coloring operation called dyeing is not necessary. Therefore, since the restriction on the length of the yarn in the dyeing process is eliminated, a sewing thread for a long airbag can be produced.
  • the bobbin 10 is loaded in a winding device (not shown) so that the body 20 is horizontal.
  • the end of the yarn 50 that has passed through the yarn feed guide is attached to a predetermined position of the body portion 20.
  • the yarn feed guide is reciprocated between the winding lengths L2.
  • the reciprocation of the yarn feed guide is gradually shifted along the shape of the flange portion 30.
  • the thread 50 wound around the bobbin 10 is applied with oil.
  • the bobbin 10 and the thread 50 wound around the bobbin are loaded into an industrial sewing machine in order to sew an airbag.
  • the body portion 20 is extrapolated to an axis that is disposed perpendicular to the industrial sewing machine so that the flange portion 30 is at the lower portion.
  • the end of the thread 50 is set in an industrial sewing machine via a threader on a bobbin.
  • the yarn 50 is always unwound upward in FIG.
  • the shape of the flange portion 30 is that when the unwinding yarn 50 is loosened, it enters under the wound yarn 50, and a load more than expected is applied to the yarn feed of the industrial sewing machine. To prevent.
  • the replacement frequency of the bobbin can be lowered when sewing the airbag. Since the outer diameter D2 is larger than the outer diameter of a general bobbin, it is possible to prevent curling wrinkles on the inner part of the wound yarn 50. As a result, troubles can be prevented from occurring when sewing with an industrial sewing machine. Since the frequency of bobbin replacement can be lowered and troubles can be prevented, the production efficiency of the airbag can be increased. Furthermore, the amount of yarn 50 to be discarded can be reduced.
  • the inner diameter D1 of the body portion 20 depends on the outer diameter D2. Therefore, the shaft of the industrial sewing machine that loads the bobbin 10 and the yarn 50 wound around the bobbin needs to be set according to the inner diameter D1.
  • the second embodiment is an example in which the inside of the bobbin body is changed in accordance with the shaft of an industrial sewing machine set for a conventional bobbin.
  • FIG. 3 is a perspective view of the bobbin 70.
  • the bobbin 70 includes a barrel portion 60 having a cylindrical shape, and a flange portion 30 having a funnel shape formed at one end of the barrel portion 60.
  • the body 60 is composed of a double cylinder.
  • the outer cylinder and the inner cylinder are connected by a plurality of, for example, six ribs, and the central axes of the two cylinders substantially coincide.
  • the inner diameter D4 of the inner cylinder is 20-40 millimeters.
  • the body 60 is made thicker, not the double cylinder but the first embodiment. A similar single cylinder may be used.
  • the portions of the bobbin 70 other than the inside of the body portion 60 are the same as those in the first embodiment, and thus description thereof is omitted.
  • the outer periphery of the body portions 20 and 60 or the surface of the flange portion 30 is not limited to a smooth surface, and may have irregularities so that the wound yarn is not easily displaced.
  • the inside of the flange portion 30 is not limited to a smooth surface, and may have a structure with unevenness and ribs to improve the strength.
  • the body 60 is not limited to a single or double cylindrical shape, and may be configured to be triple or more. Moreover, it is also possible to adopt a configuration in which the end of the plurality of ribs is externally mounted on the shaft of the industrial sewing machine without forming a cylinder inside.

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Abstract

A bobbin (10) for winding a thread used for sewing an airbag comprises a cylindrically shaped barrel part (20), and a funnel-shaped flange part (30) on one side of the barrel part (20). The outer diameter of the barrel part (20) is 45 to 60 millimeters. A thread (50) wound around the bobbin (10) has a wound weight of 1,500 to 3,000 grams.

Description

ボビン及びボビンに巻回された糸Bobbins and yarn wound around bobbins
　本発明は、エアバッグの縫製に用いられる糸を巻くボビン及びボビンに巻回された糸に関する。 The present invention relates to a bobbin for winding a thread used for sewing an airbag and a thread wound around the bobbin.
　自動車用のエアバッグは、裁断された布地を、工業用ミシンで縫製して製作される。縫製に使用される縫製糸は、ボビンに巻回されて、工業用ミシンに装填される。エアバッグを製作するとき、縫製の品質検査を容易にするために、縫製糸は布地とは異なる色に着色される。さらに、エアバッグの製作においては、複数種類の太さの縫製糸を使用することから、それぞれの太さ毎に異なる色に着色される。また、一つのエアバッグを製作する間に、ボビンに巻回された縫製糸が終了して、次のボビンに入れ替えるという事態が発生することは、縫製途中で縫製糸が分断されることになるので、品質上許されない。そのため、ボビンの縫製糸は、その残量が一つのエアバッグに使用する量よりも少ないと判断された場合は、縫製糸が残っているにもかかわらず、廃棄される。 Automobile airbags are manufactured by sewing the cut fabric with an industrial sewing machine. A sewing thread used for sewing is wound around a bobbin and loaded into an industrial sewing machine. When manufacturing an airbag, the sewing thread is colored in a different color from the fabric to facilitate quality inspection of the sewing. Furthermore, since a plurality of types of sewing threads are used in the production of the airbag, the airbag is colored in a different color for each thickness. In addition, when the sewing thread wound around the bobbin is finished during the production of one airbag and is replaced with the next bobbin, the sewing thread is divided during the sewing. So it is not allowed for quality. Therefore, if it is determined that the remaining amount of the bobbin sewing thread is less than the amount used for one airbag, the bobbin sewing thread is discarded even though the sewing thread remains.
　特許文献１には、糸巻きボビンが開示されている。この糸巻きボビンは、再利用されるものであって、糸を使用後に取り外されたボビンに残った巻き付け糸を、カッター等で切断して排除するためのカッター溝を備えたものである。 Patent Document 1 discloses a thread bobbin. This thread bobbin is reused, and is provided with a cutter groove for removing the wound thread remaining on the bobbin removed after use by cutting with a cutter or the like.
　特許文献２には、エアバック用縫い糸の製造方法が開示されている。この糸は、ポリエステル又はナイロン６６のマルチフィラメント糸に撚りを施した後、着色と樹脂加工を同時に行い、その後乾燥と熱処理を施すものである。 Patent Document 2 discloses a method for manufacturing an airbag sewing thread. This yarn is obtained by twisting a polyester or nylon 66 multifilament yarn, and simultaneously performing coloring and resin processing, followed by drying and heat treatment.
特開平７―２８５７４０号公報JP-A-7-285740 特開２０００―１９９１４２号公報JP 2000-199142 A
　ボビンに巻回された縫製糸が短いと、ボビンを交換する頻度が高くなり、交換中は生産することが出来ないため、生産効率が低下する。そして、ボビンを交換する頻度が高くなると、それに伴って廃棄する縫製糸の量が増加する。
　また、ボビンの、縫製糸を巻回す部分の外径が小さいと、巻回した縫製糸の内側部に巻き癖がつく。この巻き癖によって、工業用ミシン内部を通過する縫製糸に過大な負荷がかかり、工業用ミシンの動作不良を引き起こすため、エアバッグの縫製に足る量の糸が残っていても、ボビンを交換して糸を廃棄する場合がある、などの課題がある。 If the sewing thread wound around the bobbin is short, the frequency of replacing the bobbin increases, and production cannot be performed during the replacement, resulting in a decrease in production efficiency. As the frequency of replacing the bobbin increases, the amount of sewing thread to be discarded increases accordingly.
Further, if the outer diameter of the bobbin around which the sewing thread is wound is small, a curl will be formed on the inner side of the wound sewing thread. This winding rod places an excessive load on the sewing thread that passes through the inside of the industrial sewing machine and causes malfunction of the industrial sewing machine.Therefore, even if there is still a thread sufficient for sewing the airbag, the bobbin must be replaced. There is a problem that the thread may be discarded.
　本発明は、上記実状に鑑みてなされたものであり、ボビンを交換する頻度を低くし、ボビンに巻回した縫製糸の内側部であっても、巻き癖がつかないようにすることで、生産効率の低下を防ぎ、廃棄する縫製糸を減少し、工業用ミシンの動作不良を防止する、ボビン及びボビンに巻回された糸を提供することを目的とする。 The present invention has been made in view of the above-mentioned actual situation, and by reducing the frequency of replacing the bobbin, even in the inner part of the sewing thread wound around the bobbin, An object of the present invention is to provide a bobbin and a thread wound around a bobbin that prevent a decrease in production efficiency, reduce sewing thread to be discarded, and prevent malfunction of an industrial sewing machine.
　上記目的を達成するため、本発明に係るボビンは、
　エアバッグの縫製に用いられる糸を巻くボビンであって、
　前記ボビンは、円筒形状を有する胴部と、前記胴部の片側に漏斗形状を有するフランジ部を有し、
　前記胴部の外径は、４５～６０ミリメートルである。 In order to achieve the above object, the bobbin according to the present invention comprises:
A bobbin for winding a thread used for sewing an airbag,
The bobbin has a barrel portion having a cylindrical shape, and a flange portion having a funnel shape on one side of the barrel portion,
The outer diameter of the barrel is 45-60 mm.
　例えば、前記胴部の内径は、２０～４０ミリメートルである。 For example, the inner diameter of the barrel is 20 to 40 millimeters.
　上記目的を達成するため、本発明に係る糸は、
　前記ボビンに巻回され、巻回された重量が１５００～３０００グラムである。 In order to achieve the above object, the yarn according to the present invention comprises:
The bobbin is wound, and the wound weight is 1500 to 3000 grams.
　例えば、前記糸は、有色の樹脂を塗布して着色される。 For example, the yarn is colored by applying a colored resin.
　本発明によれば、ボビンの、縫製糸を巻回す部分の外径が大きいため、巻き癖の無い縫製糸を提供できるので、工業用ミシンの動作不良を予防できる。また、ボビンに長い縫製糸を巻回すことができるため、ボビンの交換頻度を低くすることができるので、エアバッグの生産効率を向上することができる。さらに、廃棄する縫製糸の量も減少することができる。 According to the present invention, since the outer diameter of the bobbin around which the sewing thread is wound is large, it is possible to provide a sewing thread free of curling habits, thereby preventing malfunction of the industrial sewing machine. In addition, since a long sewing thread can be wound around the bobbin, the replacement frequency of the bobbin can be lowered, and the production efficiency of the airbag can be improved. Furthermore, the amount of sewing thread to be discarded can be reduced.
本発明の実施の形態１に係るボビン及びボビンに巻回された糸の正面図The front view of the bobbin which concerns on Embodiment 1 of this invention, and the thread | yarn wound around the bobbin 本発明の実施の形態１に係るボビン及びボビンに巻回された糸の断面図Sectional drawing of the bobbin which concerns on Embodiment 1 of this invention, and the thread | yarn wound around the bobbin 本発明の実施の形態２に係るボビンの斜視図The perspective view of the bobbin concerning Embodiment 2 of the present invention.
　以下、本発明の実施の形態に係るボビン及びボビンに巻回された糸について、図面を参照しながら説明する。 Hereinafter, the bobbin and the yarn wound around the bobbin according to the embodiment of the present invention will be described with reference to the drawings.
　（実施の形態１）
　図１に、ボビン１０及びボビン１０に巻回された糸５０の外観の正面図を示し、図２に、ボビン１０及びボビン１０に巻回された糸５０の断面図を示す。 (Embodiment 1)
FIG. 1 is a front view of the appearance of the bobbin 10 and the yarn 50 wound around the bobbin 10, and FIG. 2 is a cross-sectional view of the bobbin 10 and the yarn 50 wound around the bobbin 10.
　最初に、ボビン１０を説明する。ボビン１０は、図１及び図２に示すように、円筒形状を有する胴部２０と、胴部２０の一方の端に形成された、漏斗形状を有するフランジ部３０とを有する。ボビン１０は樹脂、例えばポリプロピレンからなるが、他の材質、例えば木材や金属から構成されることもある。 First, the bobbin 10 will be described. As shown in FIGS. 1 and 2, the bobbin 10 includes a barrel portion 20 having a cylindrical shape, and a flange portion 30 having a funnel shape formed at one end of the barrel portion 20. The bobbin 10 is made of a resin such as polypropylene, but may be made of other materials such as wood or metal.
　胴部２０の長さＬ１は、１５０～２００ミリメートルである。胴部２０の外径Ｄ２は、直径４５～６０ミリメートルである。胴部２０の内径Ｄ１は、外径Ｄ２よりも２～６ミリメートル小さい。 The length L1 of the body 20 is 150 to 200 mm. The outer diameter D2 of the trunk portion 20 is 45 to 60 mm in diameter. The inner diameter D1 of the trunk 20 is 2 to 6 millimeters smaller than the outer diameter D2.
　ここで、胴部２０の外径について説明する。ボビン１０に巻回される糸５０は、運送途中等に緩むことが無いように、きつく巻回される。そこで、胴部２０の外径Ｄ２が小さい場合は、胴部２０の外周近辺に巻かれた糸５０に、巻き癖がつく。
　例えば、一般的なボビンの巻回す部分の外径は２０～３０ミリメートルである。そのボビンに巻回された糸の内側部分には、巻き癖がつくことが判明している。そのため、エアバッグを工業用ミシンで縫製するときに、巻き癖のついた糸が、工業用ミシンの糸通し部から過大な負荷をうける。その結果糸が切れたり絡んだりするというトラブルが発生しやすい。 Here, the outer diameter of the trunk | drum 20 is demonstrated. The yarn 50 wound around the bobbin 10 is tightly wound so as not to loosen during transportation. Therefore, when the outer diameter D <b> 2 of the trunk portion 20 is small, a curl is attached to the thread 50 wound around the outer periphery of the trunk portion 20.
For example, the outer diameter of a portion where a general bobbin is wound is 20 to 30 millimeters. It has been found that the inner part of the yarn wound around the bobbin has a curl. For this reason, when the airbag is sewn with an industrial sewing machine, the thread with a curl is subjected to an excessive load from the threading portion of the industrial sewing machine. As a result, troubles such as thread breakage or entanglement tend to occur.
　しかし、本実施の形態の外径Ｄ２は、４５～６０ミリメートルであるため、巻き癖がつかないことが判明している。 However, since the outer diameter D2 of the present embodiment is 45 to 60 millimeters, it has been found that no curl occurs.
　胴部２０の長さＬ１は、糸５０が巻回される長さＬ２よりも長い。すなわち、巻回された糸５０が、胴部２０からはみ出すことが無いように設定されている。内径Ｄ１は、樹脂成形の都合により、全体の肉厚が同じ程度となるように設定されている。 The length L1 of the trunk portion 20 is longer than the length L2 around which the yarn 50 is wound. That is, the wound yarn 50 is set so as not to protrude from the body portion 20. The inner diameter D1 is set so that the overall thickness is the same for the convenience of resin molding.
　フランジ部３０の、胴部２０との接続部分の外径は、胴部２０の外径と同一である。フランジ部３０は、胴部２０の接続部分から外側に向かって、徐々に外径が大きくなり、最も広がった部分の外径Ｄ３は、１４０～１８０ミリメートルである。外径Ｄ３は、糸５０が巻回されたときに、フランジ部３０の端からはみ出すことの無いように、糸５０の最大巻き太さよりも大きい。 The outer diameter of the connection portion of the flange portion 30 with the trunk portion 20 is the same as the outer diameter of the trunk portion 20. The flange portion 30 gradually increases in outer diameter from the connecting portion of the body portion 20 toward the outside, and the outer diameter D3 of the most widened portion is 140 to 180 millimeters. The outer diameter D3 is larger than the maximum winding thickness of the yarn 50 so that the yarn 50 does not protrude from the end of the flange portion 30 when the yarn 50 is wound.
　次に、糸５０を説明する。糸５０は、ボビン１０に巻回されている。糸５０は、胴部２０の、フランジ部３０との接合部分から、フランジの無い側の端部の端から所定の位置までの間、すなわち巻き長さＬ２の範囲に、隙間無く巻回される。糸５０を胴部２０に巻回し、糸５０の巻き径が太くなるにつれて、糸５０はフランジ部３０部分にも巻回されている。ここで、巻き長さＬ２の端部は常にフランジ部３０の表面に存在している。しかし、巻き長さＬ２の長さは変化しない。そのため、ボビンに巻回された糸５０の上部形状と、フランジ部３０の外周形状は相似になっている。 Next, the thread 50 will be described. The thread 50 is wound around the bobbin 10. The yarn 50 is wound without a gap from the joint portion of the body portion 20 to the flange portion 30 to a predetermined position from the end of the end portion on the flange-free side, that is, in the range of the winding length L2. . The yarn 50 is wound around the flange portion 30 as the yarn 50 is wound around the body portion 20 and the winding diameter of the yarn 50 increases. Here, the end portion of the winding length L2 is always present on the surface of the flange portion 30. However, the winding length L2 does not change. Therefore, the upper shape of the thread 50 wound around the bobbin and the outer peripheral shape of the flange portion 30 are similar.
　ボビンに巻回された糸５０は、一般的に巻回された糸５０の重量で表す。糸５０の巻回された重量は、１５００～３０００グラムである。この、巻回された糸５０の長さは、糸の太さ、すなわち単位長さあたりの重量に依存するが、例えば、１００００～３００００メートルである。 The yarn 50 wound around the bobbin is generally represented by the weight of the wound yarn 50. The wound weight of the yarn 50 is 1500 to 3000 grams. The length of the wound yarn 50 depends on the thickness of the yarn, that is, the weight per unit length, but is, for example, 10,000 to 30,000 meters.
　ここで、ボビンに巻回された糸５０について、詳細に説明する。エアバッグ用の縫製糸の材質は、ポリエステル又はナイロン６６等からなる。一般的には、このマルチフィラメント糸に撚りを施した後、染色によって着色される。この着色作業は、マルチフィラメント糸の撚り糸を染色用の道具に巻き直し、染色装置によって染色し、染色後に乾燥するという工程である。この工程において、ムラの無い染色を行うために、染色用の道具には、巻き付ける糸の長さに制限があることが知られている。この制限によって、長いエアバッグ用の縫製糸が生産できない。染色による着色後に、マルチフィラメント糸に透明な樹脂を塗布し、乾燥し、熱処理が行われて、エアバッグ用の縫製糸になる。 Here, the thread 50 wound around the bobbin will be described in detail. The sewing thread material for the airbag is made of polyester or nylon 66 or the like. Generally, the multifilament yarn is twisted and then colored by dyeing. This coloring operation is a process in which a multifilament yarn is wound around a dyeing tool, dyed by a dyeing device, and dried after dyeing. In this process, it is known that a dyeing tool has a limitation on the length of a thread to be wound in order to perform uneven dyeing. This limitation prevents the production of sewing threads for long airbags. After coloring by dyeing, a transparent resin is applied to the multifilament yarn, dried and heat-treated to form a sewing thread for an airbag.
　しかし、本発明の実施の形態において用いられるエアバッグ用の糸５０は、染色による着色を不要としたものである。これは、一般的なエアバッグ用の縫製糸には、透明な樹脂の塗布が必要であることから、この樹脂を有色の樹脂にすることで、所定の色に着色したエアバッグ用の縫製糸を製造するという方法を用いるものである。この方法では、糸の着色は、有色の樹脂を塗布することによって行われるため、染色という着色作業が不要になる。そのため、染色工程における糸の長さ制限が撤廃されることから、長いエアバッグ用の縫製糸を生産することが可能となる。 However, the airbag yarn 50 used in the embodiment of the present invention does not require coloring by dyeing. This is because a sewing thread for a general airbag needs to be coated with a transparent resin, so that a sewing thread for an airbag colored in a predetermined color by making this resin a colored resin. The method of manufacturing is used. In this method, since the coloring of the yarn is performed by applying a colored resin, a coloring operation called dyeing is not necessary. Therefore, since the restriction on the length of the yarn in the dyeing process is eliminated, a sewing thread for a long airbag can be produced.
　次に、ボビン１０に糸５０を巻回す方法を説明する。図示しない巻き取り装置に、胴部２０が水平となるように、ボビン１０を装填する。糸送りガイドを経由した糸５０の端を、胴部２０の所定の位置に付着する。巻き取り装置によってボビン１０を回転しながら、糸送りガイドを、巻き長さＬ２の間を往復させる。ただし、巻き太さが太くなるにつれて、糸送りガイドの往復動作を、フランジ部３０の形状に沿って、徐々にシフトしていく。このとき、ボビン１０に巻回す糸５０は、油を塗布して巻回すものである。 Next, a method for winding the thread 50 around the bobbin 10 will be described. The bobbin 10 is loaded in a winding device (not shown) so that the body 20 is horizontal. The end of the yarn 50 that has passed through the yarn feed guide is attached to a predetermined position of the body portion 20. While the bobbin 10 is rotated by the winding device, the yarn feed guide is reciprocated between the winding lengths L2. However, as the winding thickness increases, the reciprocation of the yarn feed guide is gradually shifted along the shape of the flange portion 30. At this time, the thread 50 wound around the bobbin 10 is applied with oil.
　次に、ボビン１０及びボビンに巻回された糸５０の使用方法を説明する。ボビン１０及びボビンに巻回された糸５０は、エアバッグを縫製するために、工業用ミシンに装填される。装填の方向は、フランジ部３０が下部となるように、工業用ミシンに垂直に配置された軸に、胴部２０が外挿される。糸５０の端を、ボビン上にある糸通しを経由して、工業用ミシンにセットする。糸５０は、図１において常に上方向にほどかれていく。フランジ部３０の形状は、ほどかれていく糸５０が、弛んだときに、巻回された糸５０の下に入り込んで、工業用ミシンの糸送りに対して、想定以上の負荷がかかることを防止する。 Next, how to use the bobbin 10 and the thread 50 wound around the bobbin will be described. The bobbin 10 and the thread 50 wound around the bobbin are loaded into an industrial sewing machine in order to sew an airbag. In the loading direction, the body portion 20 is extrapolated to an axis that is disposed perpendicular to the industrial sewing machine so that the flange portion 30 is at the lower portion. The end of the thread 50 is set in an industrial sewing machine via a threader on a bobbin. The yarn 50 is always unwound upward in FIG. The shape of the flange portion 30 is that when the unwinding yarn 50 is loosened, it enters under the wound yarn 50, and a load more than expected is applied to the yarn feed of the industrial sewing machine. To prevent.
　以上によって、ボビン１０に巻回された糸５０が一般のボビンに巻回された糸よりも長いので、エアバッグを縫製するときに、ボビンの交換頻度を低くできる。外径Ｄ２が一般のボビンの外径よりも大きいので、巻回された糸５０の内側部分に巻き癖がつくことを防止できる。その結果、工業用ミシンによる縫製を行う時にトラブルが発生することを予防できる。ボビンの交換頻度を低くすることが出来て、トラブルを予防できるので、エアバッグの生産効率を高く出来る。さらに、廃棄する糸５０の量を少なく出来る。 As described above, since the thread 50 wound around the bobbin 10 is longer than the thread wound around the general bobbin, the replacement frequency of the bobbin can be lowered when sewing the airbag. Since the outer diameter D2 is larger than the outer diameter of a general bobbin, it is possible to prevent curling wrinkles on the inner part of the wound yarn 50. As a result, troubles can be prevented from occurring when sewing with an industrial sewing machine. Since the frequency of bobbin replacement can be lowered and troubles can be prevented, the production efficiency of the airbag can be increased. Furthermore, the amount of yarn 50 to be discarded can be reduced.
　（実施の形態２）
　実施の形態１においては、胴部２０の内径Ｄ１は、外径Ｄ２に依存するものである。そのため、ボビン１０及びボビンに巻回された糸５０を装填する工業用ミシンの軸は、内径Ｄ１に合わせて設定する必要がある。しかしながら、本発明の実施の形態にかかるボビン１０及びボビンに巻回された糸５０は、従来のボビン用に設定された工業用ミシンの軸にも使用したいという要望がある。そのため、従来のボビン用に設定された工業用ミシンの軸にあわせて、ボビンの胴部の内部を変更したものの一例が実施の形態２である。 (Embodiment 2)
In the first embodiment, the inner diameter D1 of the body portion 20 depends on the outer diameter D2. Therefore, the shaft of the industrial sewing machine that loads the bobbin 10 and the yarn 50 wound around the bobbin needs to be set according to the inner diameter D1. However, there is a desire to use the bobbin 10 and the yarn 50 wound around the bobbin according to the embodiment of the present invention also for an industrial sewing machine shaft set for a conventional bobbin. Therefore, the second embodiment is an example in which the inside of the bobbin body is changed in accordance with the shaft of an industrial sewing machine set for a conventional bobbin.
　図３は、ボビン７０の斜視図である。ボビン７０は、円筒形状を有する胴部６０と、胴部６０の一方の端に形成された、漏斗形状を有するフランジ部３０とを有する。 FIG. 3 is a perspective view of the bobbin 70. The bobbin 70 includes a barrel portion 60 having a cylindrical shape, and a flange portion 30 having a funnel shape formed at one end of the barrel portion 60.
　胴部６０は、２重の円筒からなる。外側の円筒と内側の円筒は、複数本、例えば６本のリブで接続されており、両円筒の中心軸はほぼ一致する。内側の円筒の内径Ｄ４は、２０～４０ミリメートルである。なお、外側の円筒の外径Ｄ２と内側の円筒の内径Ｄ４との差が、６ミリメートルよりも小さい場合は、胴部６０を厚肉にして、２重の円筒ではなく、実施の形態１と同様の、１重の円筒としても良い。 The body 60 is composed of a double cylinder. The outer cylinder and the inner cylinder are connected by a plurality of, for example, six ribs, and the central axes of the two cylinders substantially coincide. The inner diameter D4 of the inner cylinder is 20-40 millimeters. When the difference between the outer diameter D2 of the outer cylinder and the inner diameter D4 of the inner cylinder is smaller than 6 millimeters, the body 60 is made thicker, not the double cylinder but the first embodiment. A similar single cylinder may be used.
　ボビン７０の、胴部６０内部を除く部分は、実施の形態１と同様であるため、説明を省略する。 The portions of the bobbin 70 other than the inside of the body portion 60 are the same as those in the first embodiment, and thus description thereof is omitted.
　本発明は、本発明の広義の精神と範囲を逸脱することなく、様々な実施の形態及び変形が可能とされるものである。また、上述した実施の形態は、この発明を説明するためのものであり、本発明の範囲を限定するものではない。すなわち、本発明の範囲は、実施の形態ではなく、特許請求の範囲によって示される。そして、特許請求の範囲内及びそれと同等の発明の意義の範囲内で施される様々な変形が、この発明の範囲内とみなされる。 The present invention is capable of various embodiments and modifications without departing from the broad spirit and scope of the present invention. The above-described embodiments are for explaining the present invention and do not limit the scope of the present invention. In other words, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.
　例えば、胴部２０及び６０の外周又はフランジ部３０の表面は、滑らかな表面に限定されず、凹凸を有して、巻回した糸がずれにくいようにしても良い。 For example, the outer periphery of the body portions 20 and 60 or the surface of the flange portion 30 is not limited to a smooth surface, and may have irregularities so that the wound yarn is not easily displaced.
　また、フランジ部３０の内部は、滑らかな表面に限定されず、凹凸やリブを有して、強度向上を図る構成にしても良い。 Further, the inside of the flange portion 30 is not limited to a smooth surface, and may have a structure with unevenness and ribs to improve the strength.
　また、胴部６０は、１重又は２重の円筒形状に限られず、３重以上の構成とすることも可能である。また、内側に円筒を形成せず、複数のリブの端部が工業用ミシンの軸に外装される構成とすることも可能である。 Further, the body 60 is not limited to a single or double cylindrical shape, and may be configured to be triple or more. Moreover, it is also possible to adopt a configuration in which the end of the plurality of ribs is externally mounted on the shaft of the industrial sewing machine without forming a cylinder inside.
１０　ボビン、２０　胴部、３０　フランジ部、５０　糸、６０　胴部、７０　ボビン 10 bobbins, 20 barrels, 30 flanges, 50 threads, 60 barrels, 70 bobbins

Claims (4)

  1. 　エアバッグの縫製に用いられる糸を巻くボビンであって、
    　前記ボビンは、円筒形状を有する胴部と、前記胴部の片側に漏斗形状を有するフランジ部を有し、
    　前記胴部の外径は、４５～６０ミリメートルである、
    　ボビン。     A bobbin for winding a thread used for sewing an airbag,
    The bobbin has a barrel portion having a cylindrical shape, and a flange portion having a funnel shape on one side of the barrel portion,
    The outer diameter of the barrel is 45-60 mm.
    Bobbin.
  2. 　前記胴部の内径は、２０～４０ミリメートルである、
    　請求項１に記載のボビン。     The inner diameter of the barrel is 20 to 40 millimeters.
    The bobbin according to claim 1.
  3. 　請求項１又は２に記載のボビンに巻回され、巻回された重量が１５００～３０００グラムである、
    　エアバッグの縫製に用いられる、ボビンに巻回された糸。     The bobbin according to claim 1 or 2 is wound, and the wound weight is 1500 to 3000 grams.
    A thread wound around a bobbin used to sew airbags.
  4. 　前記糸は、有色の樹脂を塗布して着色される、
    　請求項３に記載の、エアバッグの縫製に用いられる、ボビンに巻回された糸。     The yarn is colored by applying a colored resin,
    The thread wound around a bobbin used for sewing an airbag according to claim 3.
PCT/JP2018/016314 2018-04-20 2018-04-20 Bobbin, and thread wound around bobbin WO2019202736A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS592759U (en) * 1982-06-28 1984-01-09 平岩　芳郎 thread winder
JPS59137246U (en) * 1983-02-28 1984-09-13 積水化学工業株式会社 thread winding piece
JPH06239529A (en) * 1993-02-18 1994-08-30 Toyoda Gosei Co Ltd Winding structure of air bag sewing thread
JP2000199142A (en) * 1998-12-25 2000-07-18 Sanesu Seni Kogyo Kk Production of sewing thread for airbag
JP2004018207A (en) * 2002-06-18 2004-01-22 Asahi Fiber Glass Co Ltd Yarn package
JP2013249143A (en) * 2012-05-30 2013-12-12 Toray Ind Inc Polyester monofilament package

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS592759U (en) * 1982-06-28 1984-01-09 平岩　芳郎 thread winder
JPS59137246U (en) * 1983-02-28 1984-09-13 積水化学工業株式会社 thread winding piece
JPH06239529A (en) * 1993-02-18 1994-08-30 Toyoda Gosei Co Ltd Winding structure of air bag sewing thread
JP2000199142A (en) * 1998-12-25 2000-07-18 Sanesu Seni Kogyo Kk Production of sewing thread for airbag
JP2004018207A (en) * 2002-06-18 2004-01-22 Asahi Fiber Glass Co Ltd Yarn package
JP2013249143A (en) * 2012-05-30 2013-12-12 Toray Ind Inc Polyester monofilament package

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