JP5873355B2 - Seamless belt - Google Patents

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JP5873355B2
JP5873355B2 JP2012043183A JP2012043183A JP5873355B2 JP 5873355 B2 JP5873355 B2 JP 5873355B2 JP 2012043183 A JP2012043183 A JP 2012043183A JP 2012043183 A JP2012043183 A JP 2012043183A JP 5873355 B2 JP5873355 B2 JP 5873355B2
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belt
seamless belt
seamless
woven
spun yarn
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JP2013177237A (en
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邦王 森本
邦王 森本
小林 直樹
小林  直樹
石井 信彦
信彦 石井
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Mitsuboshi Belting Ltd
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Description

本発明は、ベルトコンベアに使用されるシームレスベルトに関する。   The present invention relates to a seamless belt used for a belt conveyor.

ベルトコンベアの搬送ベルトには、帯状のベルトを継目で無端状に継いだ継ぎベルトと、継目のない無端帯状のシームレスベルトが用いられている。継目のないシームレスベルトは、継目の段差に起因する振動や引掛かり等が発生せず、搬送物が食品等の軽量物であっても安定して搬送することができる。   As the conveyor belt of the belt conveyor, a joint belt obtained by joining a belt-like belt endlessly at a seam and a seamless belt having an endless belt shape without a seam are used. The seamless seamless belt does not generate vibration or catch due to the level difference of the seam, and can be stably conveyed even if the conveyed item is a lightweight item such as food.

このシームレスベルトの芯体には、通常、袋織等により無端状に織製された引裂強度の高い織布が用いられている(例えば、特許文献1、2参照)。この織布は経糸と緯糸を交互に浮き沈みさせて織る平織で形成されており、経糸と緯糸には連続した長繊維糸であるマルチフィラメント糸やモノフィラメント糸が使用され、経糸はベルト周長方向に、緯糸はベルト幅方向に織り込まれている。   For the core of the seamless belt, a woven fabric having high tear strength that is woven endlessly by bag weaving or the like is usually used (for example, see Patent Documents 1 and 2). This woven fabric is a plain weave made by weaving warp and weft alternately up and down. Multi-filament and monofilament yarns, which are continuous long fiber yarns, are used for the warp and weft. The weft is woven in the belt width direction.

また、ベルトコンベア用のシームレスベルトの芯体は、通常、複数のベルトを同時に採取できるように広幅に織製され、コーティング処理等による接着層やラミネート加工等によるカバー層を形成した広幅のベルト成形体とされたのち、所定のベルト製品幅となるように幅切り裁断されている。このため、製造されたシームレスベルトの幅端面は、幅切り裁断されたカットエッジとなる。   In addition, the core of a seamless belt for a belt conveyor is usually woven in a wide width so that a plurality of belts can be collected at the same time, and formed into a wide belt formed with an adhesive layer by a coating process or a cover layer by a laminating process. After the body is formed, it is cut into a width so as to have a predetermined belt product width. For this reason, the width end surface of the manufactured seamless belt becomes a cut edge that is cut in width.

特開2001−207358号公報JP 2001-207358 A 特開2004−149267号公報JP 2004-149267 A

上述した幅端面がカットエッジとされたシームレスベルトは、ベルト走行時の蛇行や片寄り等によって、幅端面がベルトコンベアのフレームやカバー等と接触すると、裁断面とされた幅端面に露出する経糸や緯糸の切断端部がほつれるほつれ現象が発生することがある。   The above-mentioned seamless belt with a cut end at the width end face is a warp that is exposed to the cut end face when the width end face comes into contact with the belt conveyor frame, cover, etc. due to meandering or offset when the belt is running. A fraying phenomenon may occur where the cut ends of the weft and the weft are frayed.

特許文献1、2に記載されたように、経糸と緯糸に長繊維糸を使用した織布を芯体に用いた従来のシームレスベルトは、ほつれ現象によってほつれた長繊維糸が、ベルトコンベアのフレームやプーリ等に絡まると、ベルト周長方向に織り込まれた経糸の長繊維糸が続けてほつれ出し、ほつれ現象が止まらずに進展する問題がある。このように、ほつれ現象が進展すると、長くほつれ出して切れた長繊維糸が搬送物に付着したり混入したりし、特に、搬送物が食品である場合は、食品衛生や品質管理の面で重大な問題となる。   As described in Patent Documents 1 and 2, a conventional seamless belt using a woven fabric using long fiber yarns for warps and wefts as a core has a long fiber yarn frayed by a fraying phenomenon. When entangled with a pulley or the like, there is a problem that the long fiber yarn of the warp woven in the belt circumferential direction is continuously frayed and the fraying phenomenon does not stop and progresses. In this way, when the fraying phenomenon progresses, the long fiber yarn that has frayed for a long time adheres to or mixes with the conveyed product, especially when the conveyed item is food, in terms of food hygiene and quality control. It becomes a serious problem.

そこで、本発明の課題は、シームレスベルトの幅端面がカットエッジとされても、織布とされた芯体のほつれ現象が進展しないようにすることである。   Accordingly, an object of the present invention is to prevent the fraying phenomenon of the core body made of a woven fabric from progressing even if the width end face of the seamless belt is a cut edge.

上記の課題を解決するために、本発明は、継目のない無端帯状の芯体に、ベルト周長方向に織り込まれる経糸とベルト幅方向に織り込まれる緯糸とで織製された平織の織布が用いられ、前記芯体の外周面と内周面とを覆う接着層が形成され、幅端面がカットエッジとされたシームレスベルトにおいて、前記織布の経糸に短繊維を用いた紡績糸を使用し、前記接着層を形成する接着剤の目付量は200〜300g/m 2 とされた構成を採用した。
In order to solve the above-described problems, the present invention provides a plain woven fabric woven with a warp woven in the belt circumferential direction and a weft woven in the belt width direction on a seamless endless belt-shaped core. In a seamless belt in which an adhesive layer covering the outer peripheral surface and the inner peripheral surface of the core body is formed and the width end surface is a cut edge, a spun yarn using short fibers is used for the warp of the woven fabric. , basis weight of the adhesive forming the adhesive layer employing the configuration is the 200-30Og / m 2.

すなわち、芯体に用いられる織布の経糸に短繊維を用いた紡績糸を使用することにより、カットエッジの幅端面でほつれ現象が発生しても、ベルト周長方向に織り込まれた経糸が続けてほつれ出すのを防止して、ほつれ現象が進展しないようにした。また、芯体を接着層で覆った場合に、短繊維の紡績糸は、長繊維のフィラメント糸に較べて、アンカー効果による接着剤との接着力が大きくなるので、ほつれ現象の発生も抑制できることが期待される。   In other words, by using spun yarn using short fibers for the warp of the woven fabric used for the core, the warp woven in the belt circumferential direction continues even if fraying occurs on the width end face of the cut edge. The fraying phenomenon was prevented from progressing by preventing it from fraying. In addition, when the core is covered with an adhesive layer, the spun yarn of short fibers has a greater adhesive force with the adhesive due to the anchor effect than the filament yarn of long fibers, so that the occurrence of fraying can be suppressed. There is expected.

前記紡績糸は、前記短繊維を20〜30番手のものとして、この短繊維の2〜3本を10cm長さ当たり30〜50回撚り合わせたものとするとよい。この短繊維には、ポリエステル繊維、芳香族ポリアミド繊維、ナイロン繊維等の伸びが少ない繊維を用いるのが好ましい。   In the spun yarn, the short fibers are 20 to 30 and the two or three short fibers are preferably twisted 30 to 50 times per 10 cm length. As the short fiber, it is preferable to use a fiber having a small elongation such as a polyester fiber, an aromatic polyamide fiber, or a nylon fiber.

前記紡績糸に用いる短繊維の長さは30〜60mmであることが好ましい。短繊維の長さが30mmでは、紡績糸の引張強度が低下したり、均斉度が整わなくなる不具合が生じる恐れがあり、短繊維の長さが60mmを超えると、ほつれ出し長さが長くなるからである。   The length of the short fiber used for the spun yarn is preferably 30 to 60 mm. If the length of the short fiber is 30 mm, the tensile strength of the spun yarn may decrease or the uniformity may not be adjusted. If the length of the short fiber exceeds 60 mm, the frayed length increases. It is.

本発明に係るシームレスベルトは、芯体に用いられる織布の経糸に短繊維を用いた紡績糸を使用したので、カットエッジの幅端面でほつれ現象が発生しても、ベルト周長方向に織り込まれた経糸が続けてほつれ出すのを防止して、ほつれ現象が進展しないようにすることができる。   The seamless belt according to the present invention uses a spun yarn using a short fiber as a warp of a woven fabric used for the core, so that even if a fraying phenomenon occurs on the width end face of the cut edge, the seamless belt is woven in the belt circumferential direction. It is possible to prevent the fraying phenomenon from progressing by preventing the warped yarn from continuously fraying.

本発明に係るシームレスベルトを使用したベルトコンベアを示す外観斜視図The external appearance perspective view which shows the belt conveyor using the seamless belt which concerns on this invention 図1のシームレスベルトを示す横断面図Cross section showing the seamless belt of FIG. (a)はシームレスベルトの走行試験に用いたベルトコンベアを示す正面図、(b)は(a)のIII−III線に沿った断面図(A) is a front view which shows the belt conveyor used for the running test of a seamless belt, (b) is sectional drawing along the III-III line of (a). 図2のシームレスベルトの変形例を示す横断面図Cross-sectional view showing a variation of the seamless belt of FIG.

以下、図面に基づき、本発明の実施形態を説明する。図1は、本発明に係るシームレスベルト1を使用したベルトコンベア10を示す。このベルトコンベア10は食品を搬送するものであり、無端帯状のシームレスベルト1は、1つの駆動プーリ11と複数の従動プーリ12に巻回され、搬送面13を形成する部位のシームレスベルト1の下面側には複数の支持ローラ14が搬送方向に配列されている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a belt conveyor 10 using a seamless belt 1 according to the present invention. The belt conveyor 10 conveys food, and the endless belt-like seamless belt 1 is wound around one drive pulley 11 and a plurality of driven pulleys 12 to form a conveyance surface 13 on the lower surface of the seamless belt 1. On the side, a plurality of support rollers 14 are arranged in the transport direction.

図2は、前記シームレスベルト1の横断面を示す。この横断面の上面側が無端帯状の外周側、下面側が内周側となり、紙面に垂直な方向がベルト周長方向となる。ベルト幅方向となる左右方向両側の幅端面1aは、幅切り裁断されたカットエッジとされている。シームレスベルト1の芯体2は、ベルト周長方向に織り込まれた経糸3とベルト幅方向に織り込まれた緯糸4とで織製された織布で形成されている。この芯体2の外周面と内周面は、接着剤の糊引き処理によって形成された接着層5で覆われており、接着層5で覆われた芯体2の外周面はカバー層6で被覆されている。   FIG. 2 shows a cross section of the seamless belt 1. The upper surface side of the cross section is the endless belt-shaped outer peripheral side, the lower surface side is the inner peripheral side, and the direction perpendicular to the paper surface is the belt circumferential length direction. The width end surfaces 1a on both sides in the left-right direction, which is the belt width direction, are cut edges that are cut in width. The core 2 of the seamless belt 1 is formed of a woven fabric woven by warps 3 woven in the belt circumferential direction and wefts 4 woven in the belt width direction. The outer peripheral surface and inner peripheral surface of the core body 2 are covered with an adhesive layer 5 formed by an adhesive paste process, and the outer peripheral surface of the core body 2 covered with the adhesive layer 5 is a cover layer 6. It is covered.

前記織布の経糸3は、繊維長が50mmの短繊維で20番手のポリエステル繊維2本を、10cm長さ当たり48回撚り合わせた紡績糸とされ、緯糸4は太さ660デシテックスのポリエステル繊維のモノフィラメント糸とされている。この織布は経糸3が50本/25mm、緯糸4が30本/25mmの密度の平織によって織製されている。   The warp 3 of the woven fabric is a spun yarn in which two 20th polyester fibers having a fiber length of 50 mm are twisted 48 times per 10 cm length, and the weft 4 is a polyester fiber having a thickness of 660 dtex. Monofilament yarn. This woven fabric is woven by a plain weave having a density of 50 warps / 25 mm and 30 wefts / 25 mm.

前記接着層3を形成する接着剤は、エーテル系ウレタン、エステル系ウレタン、ポリカーボネイト系ウレタン等のウレタン系接着剤とされ、2本の回転ロール間に巻回した芯体2の外周面側から糊引き処理で塗布されることにより、芯体2の外周面を覆うとともに、織布の織目から裏側にはみ出して内周面も覆う接着層5を形成する。接着剤の目付量は200〜300g/mとされている。この接着層3は、芯体への水や油等の液体の浸潤を防止する役割をする。 The adhesive forming the adhesive layer 3 is a urethane adhesive such as ether urethane, ester urethane, polycarbonate urethane, etc., and glue is applied from the outer peripheral surface side of the core 2 wound between two rotating rolls. By being applied by the drawing process, the adhesive layer 5 is formed which covers the outer peripheral surface of the core body 2 and protrudes from the weave of the woven fabric to the back side to cover the inner peripheral surface. The basis weight of the adhesive is 200 to 300 g / m 2 . The adhesive layer 3 serves to prevent infiltration of liquid such as water or oil into the core body.

前記カバー層6は、ポリウレタン系、ポリオレフィン系、ポリ塩化ビニル系等の熱可塑性エラストマで形成され、熱プレス盤等によって熱融着されることにより、芯体2の外周面を被覆する。カバー層6の厚みは0.3mmとされている。このカバー層6は、シームレスベルト1の搬送面を平滑にするとともに、搬送物との間の適度な摩擦係数を確保する役割をする。   The cover layer 6 is formed of a polyurethane-based, polyolefin-based, polyvinyl chloride-based or the like thermoplastic elastomer and is heat-sealed by a hot press machine or the like to cover the outer peripheral surface of the core body 2. The cover layer 6 has a thickness of 0.3 mm. The cover layer 6 serves to smooth the transport surface of the seamless belt 1 and to ensure an appropriate coefficient of friction with the transported object.

実施例として、上述した芯体の織布の経糸に紡績糸を使用し、緯糸にモノフィラメント糸を使用したシームレスベルトを用意した。また比較例として、芯体の織布の経糸にポリエステル繊維のマルチフィラメント糸(太さ1100デシテックス、撚り合わせ本数1、撚り回数5回/10cm)を使用し、緯糸に実施例と同じモノフィラメント糸を使用して、同様の接着層とカバー層を形成したシームレスベルトも用意した。実施例と比較例の各シームレスベルトの寸法は、いずれも幅100mm、周長1500mmとした。   As an example, a seamless belt using a spun yarn as the warp of the core woven fabric described above and a monofilament yarn as the weft was prepared. As a comparative example, a polyester filament multifilament yarn (thickness 1100 dtex, number of twists 1, number of twists 5 times / 10 cm) is used for the warp of the woven fabric of the core, and the same monofilament yarn as in the embodiment is used for the weft. A seamless belt having the same adhesive layer and cover layer was also prepared. The dimensions of each seamless belt of the example and the comparative example were 100 mm width and 1500 mm circumference.

上述した実施例と比較例の各シームレスベルトについて、試験用ベルトコンベアを用いた走行試験を行った。試験用ベルトコンベア20は、図3(a)、(b)に示すように、1つの駆動プーリ21と4つの従動プーリ22を備えたものであり、搬送ラインにシームレスベルト1の一方の幅端面1aに接触させる当て板23を設置した。駆動プーリ21と各従動プーリ22の直径は30mm、当て板23の搬送方向長さは250mmとした。   About each seamless belt of the Example and comparative example mentioned above, the running test using the belt conveyor for a test was done. As shown in FIGS. 3A and 3B, the test belt conveyor 20 includes one drive pulley 21 and four driven pulleys 22, and one width end face of the seamless belt 1 on the transport line. A contact plate 23 to be brought into contact with 1a was installed. The diameter of the driving pulley 21 and each driven pulley 22 was 30 mm, and the length of the contact plate 23 in the conveying direction was 250 mm.

前記走行試験では、実施例と比較例の各シームレスベルトの走行速度を50m/min、ベルト張力を3N/mmとし、当て板23を幅端面1aに0.1N/mmの力で押し当てて、1000時間まで走行させ、幅端面1aでのほつれ現象を観察した。   In the running test, the running speed of each seamless belt of the example and the comparative example was 50 m / min, the belt tension was 3 N / mm, and the contact plate 23 was pressed against the width end surface 1a with a force of 0.1 N / mm, It was run for up to 1000 hours and the fraying phenomenon on the width end face 1a was observed.

Figure 0005873355
Figure 0005873355

表1に、上記走行試験の結果を示す。経糸に長繊維のマルチフィラメント糸を使用した比較例のものは、68時間の走行でほつれ現象が観察され、経糸のほつれ長さが50mmとなったので、試験を途中で中止した。これに対して、経糸に短繊維の紡績糸を使用した実施例のものは1000時間走行させてもほつれ現象が発生しなかった。この試験結果より、経糸に短繊維の紡績糸を使用することにより、ほつれ現象の発生と進展を効果的に抑制できることが確認された。   Table 1 shows the results of the running test. In the comparative example using long filament multifilament yarn as the warp, the fraying phenomenon was observed after running for 68 hours, and the frayed length of the warp became 50 mm. Therefore, the test was stopped halfway. On the other hand, the fraying phenomenon did not occur in the example using short fiber spun yarn for warp even after running for 1000 hours. From this test result, it was confirmed that the occurrence and development of the fraying phenomenon can be effectively suppressed by using a spun yarn of short fibers as the warp.

図4は、上記シームレスベルト1の変形例の横断面を示す。この変形例のシームレスベルト1は、上述した実施形態のものを内外2層に重ね合わせたものであり、左右方向両側の幅端面1aはカットエッジとされている。内周側のもののカバー層6は、内外2層を熱融着する中間層7とされている。   FIG. 4 shows a cross section of a modified example of the seamless belt 1. A seamless belt 1 according to this modification is obtained by superimposing the above-described embodiment on two inner and outer layers, and the width end faces 1a on both sides in the left-right direction are cut edges. The cover layer 6 on the inner peripheral side is an intermediate layer 7 for heat-sealing the inner and outer two layers.

上述した実施形態では、芯体の織布の緯糸にモノフィラメント糸を使用したが、緯糸にも紡績糸を使用するようにしてもよい。   In the embodiment described above, the monofilament yarn is used as the weft of the woven fabric of the core body, but a spun yarn may be used as the weft.

上述した実施形態では、シームレスベルトを食品の搬送に使用されるものとしたが、本発明に係るシームレスベルトは食品の搬送用に限定されることはなく、電気部品や機械部品等の搬送に使用することもできる。   In the above-described embodiment, the seamless belt is used for transporting food, but the seamless belt according to the present invention is not limited to transporting food, and is used for transporting electrical parts, mechanical parts, and the like. You can also

1 シームレスベルト
1a 幅端面
2 芯体
3 経糸
4 緯糸
5 接着層
6 カバー層
7 中間層
10 ベルトコンベア
11 駆動プーリ
12 従動プーリ
13 搬送面
14 支持ローラ
20 ベルトコンベア
21 駆動プーリ
22 従動プーリ
23 当て板
DESCRIPTION OF SYMBOLS 1 Seamless belt 1a Width end surface 2 Core body 3 Warp 4 Weft 5 Adhesive layer 6 Cover layer 7 Intermediate layer 10 Belt conveyor 11 Drive pulley 12 Drive pulley 13 Transport surface 14 Support roller 20 Belt conveyor 21 Drive pulley 22 Drive pulley 23 Contact plate

Claims (3)

継目のない無端帯状の芯体に、ベルト周長方向に織り込まれる経糸とベルト幅方向に織り込まれる緯糸とで織製された平織の織布が用いられ、前記芯体の外周面と内周面とを覆う接着層が形成され、幅端面がカットエッジとされたシームレスベルトにおいて、前記織布の経糸に短繊維を用いた紡績糸を使用し、前記接着層を形成する接着剤の目付量は200〜300g/m 2 とされたことを特徴とするシームレスベルト。 A plain woven fabric woven with warps woven in the belt circumferential direction and wefts woven in the belt width direction is used for a seamless endless belt-shaped core, and the outer peripheral surface and inner peripheral surface of the core In a seamless belt in which an adhesive layer is formed and a width end surface is a cut edge, a spun yarn using a short fiber is used as the warp of the woven fabric, and the basis weight of the adhesive forming the adhesive layer is A seamless belt characterized by being 200 to 300 g / m 2 . 前記紡績糸が、前記短繊維を20〜30番手のものとして、この短繊維の2〜3本を10cm長さ当たり30〜50回撚り合わせたものである請求項1に記載のシームレスベルト。   2. The seamless belt according to claim 1, wherein the spun yarn is obtained by twisting 2 to 3 of the short fibers 30 to 50 times per 10 cm length, with the short fibers being 20-30. 前記紡績糸に用いる短繊維の長さが30〜60mmである請求項1または2に記載のシームレスベルト。   The seamless belt according to claim 1 or 2, wherein the short fibers used for the spun yarn have a length of 30 to 60 mm.
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