JP2015155588A - Manufacturing method and manufacturing apparatus of three dimensional net-like structure - Google Patents

Manufacturing method and manufacturing apparatus of three dimensional net-like structure Download PDF

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JP2015155588A
JP2015155588A JP2015005371A JP2015005371A JP2015155588A JP 2015155588 A JP2015155588 A JP 2015155588A JP 2015005371 A JP2015005371 A JP 2015005371A JP 2015005371 A JP2015005371 A JP 2015005371A JP 2015155588 A JP2015155588 A JP 2015155588A
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conveyor
water
filaments
assembly
guide
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JP5802849B2 (en
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高岡 伸行
Nobuyuki Takaoka
伸行 高岡
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SHIIENJI KK
C Eng Co Ltd
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SHIIENJI KK
C Eng Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a three dimensional net-like structure manufacturing apparatus capable of preventing defective forming of a three dimensional net-like structure, improving versatility to manufacture various shapes and sizes of three dimensional net-like structures, and extending life of the manufacturing apparatus.
SOLUTION: A three dimensional net-like structure manufacturing apparatus comprises: a cap 370 with multiple push-out holes for pushing out and dropping melted thermoplastic resin as filaments 310; a water bath 390 for cooling an aggregation 311 of the filaments 310; conveyors 340a, 340b placed to face each other below the push-out holes 371, around which endless members 341 are placed with a gap R between them; ejecting holes 320 for ejecting cooling water from the gaps R toward the aggregation 311, which is placed at inner regions I of the conveyors 340a, 340b; and a guide 330, which is placed at the inner region I and regulates deflection of the endless members 341. The aggregation 311 is formed into a three dimensional net-like structure 315 by taking out the aggregation 311 by conveyors 340a, 340b at a lower speed than dropping speed of the filaments 310 and cooling the aggregation 311 in the water bath 390.
COPYRIGHT: (C)2015,JPO&INPIT

Description

本発明は、マットレス、クッション等に使用する立体網状構造体製造方法および立体網状構造体製造装置に関するものである。   The present invention relates to a three-dimensional network structure manufacturing method and a three-dimensional network structure manufacturing apparatus used for mattresses, cushions and the like.

従来の立体網状構造体の2面ないし4面成形方法、異形成形は、特許文献1に示すものであり、熱可塑性樹脂を原料又は主原料とする溶融した線条を複数の孔を有する口金を先端部に有するダイスから下方へ押し出し、一部水没した、引取機の間に自然降下させ、該降下速度より前記線条を遅く引き込むことにより立体網状構造体を製造する際、前記引取機は互いに対向するものが少なくとも1対あり、該1対の引取機によって押し出し方向と垂直な方向に四辺形等の所定形状が形成され、押出された線条の集合体の幅より前記互いに対向する引取機の間隔が狭く設定され、前記引取機が水没する前後に前記線条の集合体の外周の二面ないし四面が前記引取機に接触することにより成形され、前記押し出し方向と平行な外周の四面の表面側の密度が、前記表面側を除く部分の密度より相対的に高くなることを特徴とした立体網状構造体の成形方法である。これにより、後工程での仕上げを不要とし、整列度を高めることができる。   A conventional two- or four-sided molding method for a three-dimensional network structure, and an irregularly shaped shape are those shown in Patent Document 1, and a die having a plurality of holes is formed from a molten filament made of a thermoplastic resin as a raw material or a main raw material. When manufacturing a three-dimensional network structure by pushing down from a die at the tip, partially submerged, naturally descending between the take-up machines, and drawing the filaments slower than the descent speed, the take-up machines are mutually connected There is at least one pair facing each other, and a predetermined shape such as a quadrilateral is formed in a direction perpendicular to the extrusion direction by the pair of take-up machines, and the take-up machines are opposed to each other by the width of the aggregate of the extruded filaments Is formed by contacting the take-up machine with two or four outer peripheral surfaces of the filament assembly before and after the take-out machine is submerged, and the outer four sides are parallel to the extrusion direction. Surface side Degree is a method of molding a three-dimensional net-like structure characterized by relatively higher that than the density of the portion excluding the surface side. This eliminates the need for finishing in the subsequent process and increases the degree of alignment.

特開2001−328153号公報JP 2001-328153 A

しかしながら、立体網状構造体の連続的な製造によって水槽の水温が上昇し、正常な冷却が行われないこととなる問題があった。これは冷却に重要な立体網状構造体の引取経路において特に顕著で、溶融している線条の冷却固化が遅れることにより、ループや絡合部分の形状が崩れ、立体網状構造体の形成不良を招くおそれがあった。また、水槽内の局所的な水温上昇により製造装置の傷みの原因となるおそれがあった。   However, there is a problem that the water temperature of the water tank rises due to continuous production of the three-dimensional network structure and normal cooling is not performed. This is particularly noticeable in the take-up path of a three-dimensional network structure that is important for cooling, and by delaying the cooling and solidification of the melted filament, the shape of the loop and the entangled portion collapses, resulting in poor formation of the three-dimensional network structure. There was a risk of inviting. Moreover, there existed a possibility of causing the damage of a manufacturing apparatus by the local water temperature rise in a water tank.

また、別の課題としては、引取り中の線条の集合体の反発力によって立体網状構造体の引取機に掛かる力は大きく、引取機として無端部材を備えたコンベヤ等を用いる場合にはコンベヤが撓んでしまい、引き取ることができず安定的な立体網状構造体の製造の障害となったり、立体網状構造体の精度を悪化させたりする要因となるおそれがあった。一般にコンベヤは構造上、その張力の設定が重要であるところ、最適な張力は諸条件によっても変化するものであり張力の設定は容易ではないが、本技術分野においてコンベヤを用いる場合には、立体網状構造体を挟持して引き取るという特有な構造上、さらに難しいものとなるおそれがあった。例えば、このような問題はダブルベッドのサイズのマットレスとして用いられる等、立体網状構造体の幅が広い場合等に顕著となるおそれがあった。   Another problem is that the force applied to the take-up machine for the three-dimensional network structure is large due to the repulsive force of the assembly of the filaments being taken up, and if a conveyor with an endless member is used as the take-up machine, the conveyor May be bent and cannot be taken out, which may cause an obstacle to the production of a stable three-dimensional network structure, or may deteriorate the accuracy of the three-dimensional network structure. Generally, it is important to set the tension of a conveyor because of its structure. However, the optimal tension varies depending on various conditions and it is not easy to set the tension. Due to the unique structure of sandwiching and pulling the net-like structure, there is a risk that it will be even more difficult. For example, such a problem may become prominent when the width of the three-dimensional network structure is wide, such as when used as a mattress having a double bed size.

そこで本発明は、立体網状構造体の製造中に必要な冷却を確実に行い、立体網状構造体の形成不良を防止し、様々な立体網状構造体の形状や大きさに対応可能な汎用性を向上させ、製造装置の長寿命化を図ることを課題とする。   Therefore, the present invention ensures the necessary cooling during the production of the three-dimensional network structure, prevents the formation failure of the three-dimensional network structure, and is versatile enough to adapt to the shape and size of various three-dimensional network structures. It is an object to improve the life of the manufacturing apparatus.

また本発明は、引取り中の線条の集合体の反発力によってコンベヤが撓むことを防止し、立体網状構造体の精度を良好に保ち、様々な立体網状構造体の形状や大きさに対応可能な汎用性を向上させ、製造装置の長寿命化を図ることを別の課題とする。   In addition, the present invention prevents the conveyor from being bent by the repulsive force of the aggregate of the filaments being picked up, maintains the accuracy of the three-dimensional network structure, and makes various shapes and sizes of the three-dimensional network structure. Another object is to improve the versatility that can be handled and to extend the life of manufacturing equipment.

上記課題に鑑み本発明は、溶融した熱可塑性樹脂を線条として下方に押し出して降下させる複数の押出孔を有する口金と、前記線条の集合体を冷却する水槽と、前記押出孔の下方で一対が対向して設けられ、周設される無端部材が間隙を有するコンベヤと、該コンベヤの内部領域に設けられ、前記間隙から前記集合体に向かって冷却水を噴出する噴出孔または前記集合体付近から前記間隙を通して水を吸引する吸引孔の少なくとも一方を含む強制対流部材と、を備え、前記線条の降下速度より遅い速度で前記集合体を前記コンベヤにより引き取り、前記水槽で冷却することにより、前記集合体を立体網状構造体となす立体網状構造体製造装置である。   In view of the above problems, the present invention provides a base having a plurality of extrusion holes for extruding and lowering a molten thermoplastic resin as a filament, a water tank for cooling the aggregate of the filaments, and below the extrusion hole. A pair of opposingly provided and endless members provided in the periphery have a gap, and an ejection hole provided in an inner region of the conveyor to eject cooling water from the gap toward the aggregate or the aggregate A forced convection member including at least one of suction holes for sucking water from the vicinity through the gap, and the assembly is taken up by the conveyor at a speed lower than the descending speed of the filament, and cooled by the water tank. , A three-dimensional network structure manufacturing apparatus that makes the aggregate a three-dimensional network structure.

また本発明は、溶融した熱可塑性樹脂を線条として下方に押し出して降下させる複数の押出孔を有する口金と、前記線条の集合体を冷却する水槽と、前記押出孔の下方で一対が対向して設けられ、周設される無端部材が間隙を有するコンベヤと、該コンベヤの内部領域に設けられ、前記無端部材の撓みを規制するガイドと、を備え、前記線条の降下速度より遅い速度で前記集合体を前記コンベヤにより引き取り、前記水槽で冷却することにより、前記集合体を立体網状構造体となす立体網状構造体製造装置である。   Further, the present invention provides a die having a plurality of extrusion holes for extruding and lowering molten thermoplastic resin as a filament, a water tank for cooling the aggregate of the filament, and a pair facing below the extrusion hole A circumferentially provided endless member having a gap, and a guide that is provided in an inner region of the conveyor and that restricts the bending of the endless member, and is slower than the descending speed of the filament Then, the assembly is taken up by the conveyor and cooled in the water tank, thereby forming the assembly into a three-dimensional network structure.

また本発明は、溶融した熱可塑性樹脂を線条として下方に押し出して降下させる複数の押出孔を有する口金と、前記線条の集合体を冷却する水槽と、前記押出孔の下方で一対が対向して設けられ、周設される無端部材が間隙を有するコンベヤと、該コンベヤの内部領域に設けられ、前記間隙から前記集合体に向かって冷却水を噴出する噴出孔または前記集合体付近から前記間隙を通して水を吸引する吸引孔の少なくとも一方を含む強制対流部材と、前記内部領域に設けられ、前記無端部材の撓みを規制するガイドと、を備え、前記線条の降下速度より遅い速度で前記集合体を前記コンベヤにより引き取り、前記水槽で冷却することにより、前記集合体を立体網状構造体となす立体網状構造体製造装置である。   Further, the present invention provides a die having a plurality of extrusion holes for extruding and lowering molten thermoplastic resin as a filament, a water tank for cooling the aggregate of the filament, and a pair facing below the extrusion hole The endless member provided around the conveyor has a gap, and is provided in an inner region of the conveyor, and the jet hole for ejecting cooling water from the gap toward the assembly or the vicinity of the assembly A forced convection member including at least one of suction holes for sucking water through the gap, and a guide provided in the inner region for restricting the bending of the endless member, and at a speed slower than the descending speed of the filament The apparatus is a three-dimensional network-structure manufacturing apparatus that takes the aggregate by the conveyor and cools it in the water tank to make the aggregate into a three-dimensional network structure.

また本発明は、溶融した熱可塑性樹脂を複数の線条として下方に押し出して降下させる押出ステップと、前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着するループ形成ステップと、前記コンベヤにより前記集合体を挟持して前記線条の降下速度より遅い速度で水中に引き取る引取ステップと、前記コンベヤに周設される無端部材が間隙を有し、一対の前記コンベヤに挟まれる引取領域に向かって前記コンベヤの内部領域から該間隙を通して冷却水を噴出するか、または前記引き取り領域から前記コンベヤの内部領域へ該間隙を通して水を吸引することにより、水の強制対流を起こし、前記引取ステップと並行して前記集合体を水中で冷却する冷却ステップと、を備えたことを特徴とする立体網状構造体の製造方法である。   The present invention also opposes an extrusion step of extruding and lowering molten thermoplastic resin as a plurality of filaments, with the filament contacting the water surface or sandwiching the aggregate of the filaments descending. A loop forming step in which a pair of guide members or a conveyor facing below the guide members is contacted, the filaments are entangled irregularly, and the entangled portions are heat-welded, and the assembly is sandwiched by the conveyor A step of taking the water into the water at a speed slower than the descending speed of the wire, and an inner region of the conveyor toward a take-up region sandwiched between a pair of the conveyors, with an endless member provided around the conveyor having a gap Forced water convection occurs by ejecting cooling water from the gap through the gap or suctioning water through the gap from the take-up area to the interior area of the conveyor. Wherein a method of producing a three-dimensional net-like structure characterized by comprising a cooling step in parallel with the take-off step of cooling the aggregates in water, a.

また本発明は、溶融した熱可塑性樹脂を複数の線条として下方に押し出して降下させる押出ステップと、前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着するループ形成ステップと、前記コンベヤに周設される無端部材の内部領域に撓みを規制するガイドを備え、該コンベヤにより前記集合体を挟持して前記線条の降下速度より遅い速度で水中に引き取る引取ステップと、前記引取ステップと並行して前記集合体を水中で冷却する冷却ステップと、を備えたことを特徴とする立体網状構造体の製造方法である。   The present invention also opposes an extrusion step of extruding and lowering molten thermoplastic resin as a plurality of filaments, with the filament contacting the water surface or sandwiching the aggregate of the filaments descending. A loop forming step of contacting a pair of guide members or a conveyor facing below the guide members, wherein the filaments are entangled irregularly, and the entangled portions are heat-welded, and an endless member provided around the conveyor A guide for restricting bending in the inner region of the sheet, the take-up step of holding the assembly by the conveyor and taking it into the water at a speed slower than the descending speed of the filament, and the assembly in parallel with the take-up step And a cooling step for cooling in water.

また本発明は、溶融した熱可塑性樹脂を複数の線条として下方に押し出して降下させる押出ステップと、前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着するループ形成ステップと、前記コンベヤに周設される無端部材の内部領域に撓みを規制するガイドを備え、該コンベヤにより前記集合体を挟持して前記線条の降下速度より遅い速度で水中に引き取る引取ステップと、前記無端部材が間隙を有し、一対の前記コンベヤに挟まれる引取領域に向かって前記コンベヤの内部領域から該間隙を通して冷却水を噴出するか、または前記引取領域から前記コンベアの内部領域へ該間隙を通して水を吸引することにより、水の強制対流を起こし、前記引取ステップと並行して前記集合体を水中で冷却する冷却ステップと、を備えたことを特徴とする立体網状構造体の製造方法である。   The present invention also opposes an extrusion step of extruding and lowering molten thermoplastic resin as a plurality of filaments, with the filament contacting the water surface or sandwiching the aggregate of the filaments descending. A loop forming step of contacting a pair of guide members or a conveyor facing below the guide members, wherein the filaments are entangled irregularly, and the entangled portions are heat-welded, and an endless member provided around the conveyor A guide step for restricting bending in the inner region of the sheet, the take-up step of holding the assembly by the conveyor and taking it into the water at a speed slower than the descending speed of the filament, and the endless member having a gap, Cooling water is ejected through the gap from the inner area of the conveyor toward the take-up area sandwiched by the conveyor, or the gap is passed from the take-up area to the inner area of the conveyor. A method for producing a three-dimensional network structure, comprising: forcibly convection of water by sucking water; and a cooling step for cooling the aggregate in water in parallel with the take-up step. .

また本発明は、溶融した熱可塑性樹脂が複数の線条として下方に押し出され、前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着してループが形成され、前記コンベヤにより前記集合体が挟持され前記線条の降下速度より遅い速度で水中に引き取られ、前記コンベヤに周設される無端部材が間隙を有し、一対の前記コンベヤに挟まれる引取領域に向かって前記コンベヤの内部領域から該間隙を通して冷却水が噴出されるか、または前記引取領域から前記コンベヤの内部領域へ該間隙を通して水が吸引されることにより、水の強制対流がおこり、水中で冷却されてなる立体網状構造体である。   In the present invention, the melted thermoplastic resin is extruded downward as a plurality of filaments, and the filaments come into contact with the water surface, or a pair of guide members facing each other with the aggregate of the filaments descending between them. Contacting the opposite conveyor below the guide member, the filaments are entangled irregularly, the entangled portion is thermally welded to form a loop, the assembly is sandwiched by the conveyor, the wire of the filament The endless member that is drawn into the water at a speed slower than the descending speed and has a gap between the endless members disposed around the conveyor has a gap, and cooling water is passed through the gap from the inner area of the conveyor toward the take-up area sandwiched between the pair of conveyors A three-dimensional network structure in which forced convection of water occurs and is cooled in water when water is sucked through the gap from the take-up area to the inner area of the conveyor. .

また本発明は、溶融した熱可塑性樹脂が複数の線条として下方に押し出され、前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着してループが形成され、前記コンベヤに周設される無端部材の内部領域に撓みを規制するガイドを備えた前記コンベヤにより前記集合体が挟持され前記線条の降下速度より遅い速度で水中に引き取られ冷却されてなる立体網状構造体である。   In the present invention, the melted thermoplastic resin is extruded downward as a plurality of filaments, and the filaments come into contact with the water surface, or a pair of guide members facing each other with the aggregate of the filaments descending between them. Contacting the opposite conveyor below the guide member, the filaments are entangled irregularly, the entangled portion is thermally welded to form a loop, in the inner region of the endless member provided around the conveyor It is a three-dimensional network-like structure in which the assembly is sandwiched by the conveyor provided with a guide for restricting bending, and is taken up in water and cooled at a speed slower than the descending speed of the filament.

また本発明は、溶融した熱可塑性樹脂が複数の線条として下方に押し出され、前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着してループが形成され、前記コンベヤに周設される無端部材の内部領域に撓みを規制するガイドを備えた前記コンベヤにより前記集合体が挟持され前記線条の降下速度より遅い速度で水中に引き取られ、前記コンベヤに周設される無端部材が間隙を有し、一対の前記コンベヤに挟まれる引取領域に向かって前記コンベヤの内部領域から該間隙を通して冷却水が噴出されるか、または前記引取領域から前記コンベヤの内部領域へ該間隙を通して水が吸引されることにより、水の強制対流がおこり、水中で冷却されてなる立体網状構造体である。   In the present invention, the melted thermoplastic resin is extruded downward as a plurality of filaments, and the filaments come into contact with the water surface, or a pair of guide members facing each other with the aggregate of the filaments descending between them. Contacting the opposite conveyor below the guide member, the filaments are entangled irregularly, the entangled portion is thermally welded to form a loop, in the inner region of the endless member provided around the conveyor The assembly is sandwiched by the conveyor having a guide for controlling bending and taken up in water at a speed slower than the descending speed of the filament, and an endless member provided around the conveyor has a gap, and a pair of the Cooling water is ejected through the gap from the inner area of the conveyor toward the take-off area sandwiched by the conveyor, or water is sucked through the gap from the take-up area to the inner area of the conveyor And by, occur forced convection of water, a three-dimensional net-like structure formed is cooled in water.

本発明において、前記ガイドが、前記無端部材を駆動する回動体と同軸に設けられ、前記無端部材の撓みを規制する円形ガイドであることが好ましい。   In this invention, it is preferable that the said guide is a circular guide provided coaxially with the rotary body which drives the said endless member, and controls the bending of the said endless member.

また前記ガイドが、前記内部領域のうち前記集合体に接する側において、前記無端部材の直線部と平行な縦方向に延設される中間ガイドであることも好ましい。   It is also preferable that the guide is an intermediate guide that extends in the longitudinal direction parallel to the straight portion of the endless member on the side of the inner region that contacts the assembly.

前記コンベヤは無端部材が周回することよりなるものであって、該無端部材は板材が連結部材により縦方向に連結して周設されることにより構成されるものが好ましい。連結部材とは無端チェーン等をいう。無端部材としてはその他、ゴム製や金属メッシュ製の無端ベルトを用いることもできる。   The conveyor is formed by an endless member that circulates, and the endless member is preferably configured by a plate member connected in a vertical direction by a connecting member and provided circumferentially. The connecting member refers to an endless chain or the like. In addition, as the endless member, an endless belt made of rubber or metal mesh can be used.

前記コンベヤの前記内部領域とは、無端部材の周設によって隔てられる内部の領域をいう。また、前記引取領域とは、前記内部領域と同様にして規定される外部領域のうち、対向する一対の前記コンベヤに挟まれる領域であって、前記集合体が引き取られる際に通過する領域をいう。   The internal area of the conveyor refers to an internal area separated by the circumferential arrangement of endless members. The take-up area is an area that is sandwiched between a pair of opposed conveyors among outer areas that are defined in the same manner as the inner area, and that passes through when the assembly is taken up. .

前記コンベヤは周回方向が上下に設けられ、対向する一対の該コンベヤがそれぞれ前記引取領域において下方に搬送するように設定される。   The conveyor is provided so that the circumferential direction is provided up and down, and a pair of opposed conveyors are respectively conveyed downward in the take-up area.

前記回動体は、前記連結部材を駆動するためのものであって、プーリーやスプロケット等の駆動回転体または従動回転体をいう。   The rotating body is for driving the connecting member, and means a driving rotating body such as a pulley or a sprocket or a driven rotating body.

本発明によれば、引取り中の前記線条からなる前記集合体に対して直接に冷却水流を当てることができ、より迅速・確実に冷却し、立体網状構造体の形成を良好なものとすることができる。新鮮な冷却水を連続的に供給することによって、装置の長時間運転においても水温の上昇を防止することができる。また、水槽内下部の低温な水を循環させることによっても、冷却に重要な引取領域の局部的な温度上昇を防止することができる。   According to the present invention, it is possible to directly apply a cooling water flow to the aggregate composed of the filaments being taken up, to cool more quickly and reliably, and to improve the formation of a three-dimensional network structure. can do. By continuously supplying fresh cooling water, an increase in water temperature can be prevented even during long-time operation of the apparatus. Further, by circulating low-temperature water in the lower part of the water tank, it is possible to prevent a local temperature increase in the take-up area important for cooling.

本発明によれば、前記ガイドによって前記無端部材の撓みを規制し、精度の良好な立体網状構造体を安定的に製造することができる。ダブルベッドサイズのマットレス等の幅広の立体網状構造体を製造する際にも前記ガイドによって、前記無端部材の撓みを規制することができる。   According to the present invention, the bending of the endless member is restricted by the guide, and a highly accurate three-dimensional network structure can be stably manufactured. Even when a wide three-dimensional network structure such as a double bed-size mattress is manufactured, the endless member can be bent by the guide.

実施例1による立体網状構造体15の製造装置1のシュート80a,80bを省略した平面図である。水槽90の左半分や口金70の図示は省略している。4 is a plan view in which the chute 80a, 80b of the manufacturing apparatus 1 for a three-dimensional network structure 15 according to the first embodiment is omitted. The left half of the water tank 90 and the base 70 are not shown. 同実施例1による立体網状構造体15の製造装置1の平面図である。水槽90の左半分や口金70の図示は省略している。It is a top view of the manufacturing apparatus 1 of the three-dimensional network structure 15 by the Example 1. FIG. The left half of the water tank 90 and the base 70 are not shown. 同実施例1による立体網状構造体15の製造装置1の左側面図である。水槽90の左半分や口金70の図示は省略している。It is a left view of the manufacturing apparatus 1 of the three-dimensional network structure 15 by the Example 1. FIG. The left half of the water tank 90 and the base 70 are not shown. 同実施例1による立体網状構造体15の製造装置1の口金70、シュート80a,80b、コンベヤ40a,40b部分の正面図である。It is a front view of the nozzle | cap | die 70, chute | shoots 80a and 80b, and conveyors 40a and 40b part of the manufacturing apparatus 1 of the three-dimensional network structure 15 by the Example 1. FIG. 同実施例1による立体網状構造体15の製造装置1を稼働させている状態における口金70、シュート80a,80b、コンベヤ40a,40b部分の正面図である。It is a front view of the nozzle | cap | die 70 in the state which is operating the manufacturing apparatus 1 of the three-dimensional network structure 15 by the Example 1, chute | shoot 80a, 80b, and conveyor 40a, 40b part. 実施例2による立体網状構造体215の製造装置201のコンベヤ240a,240b部分を上部駆動シャフト244の高さで断面状態にした部分断面平面図である。水槽290の左半分や口金270の図示は省略している。FIG. 10 is a partial cross-sectional plan view in which the conveyors 240a and 240b of the manufacturing apparatus 201 for the three-dimensional network structure 215 according to the second embodiment are cross-sectionalized at the height of the upper drive shaft 244. The left half of the water tank 290 and the base 270 are not shown. 同実施例2による立体網状構造体215の製造装置201の左側面図である。水槽290の左半分や口金270の図示は省略している。It is a left view of the manufacturing apparatus 201 of the three-dimensional network structure 215 by the Example 2. FIG. The left half of the water tank 290 and the base 270 are not shown. 同実施例2による立体網状構造体215の製造装置201の口金270、シュート280a,280b、コンベヤ240a,240b部分の正面図である。It is a front view of the nozzle | cap | die 270, chute | shoot 280a, 280b, and conveyor 240a, 240b part of the manufacturing apparatus 201 of the three-dimensional network structure 215 by the Example 2. FIG. 同実施例2による立体網状構造体215の製造装置201を稼働させている状態における口金270、シュート280a,280b、コンベヤ240a,240b部分の正面図である。It is a front view of the nozzle | cap | die 270, the chute | shoots 280a and 280b, and the conveyors 240a and 240b in the state which is operating the manufacturing apparatus 201 of the solid network structure 215 by the Example 2. FIG. 実施例3による立体網状構造体315の製造装置301の口金370、シュート380a,380b、コンベヤ340a,340b部分の正面図である。コンベヤ340aにおいてガイド330との関係を、コンベヤ340bにおいて噴出孔320との関係を図示しているが、これは便宜上の図示であって、コンベヤ340a,340bにおいてこれらの構成に差はないものである。It is a front view of the nozzle | cap | die 370, chute | shoot 380a, 380b, and conveyor 340a, 340b part of the manufacturing apparatus 301 of the three-dimensional network structure 315 by Example 3. FIG. The relationship with the guide 330 in the conveyor 340a and the relationship with the ejection hole 320 in the conveyor 340b are illustrated, but this is for the sake of convenience, and there is no difference between these configurations in the conveyors 340a and 340b. . 同実施例3による立体網状構造体315の製造装置301を稼働させている状態における口金370、シュート380a,380b、コンベヤ340a,340b部分の正面図である。It is a front view of the nozzle | cap | die 370, the chute | shoots 380a and 380b, and the conveyors 340a and 340b part in the state which is operating the manufacturing apparatus 301 of the three-dimensional network structure 315 by the Example 3. FIG.

本発明の実施例1による立体網状構造体15(図5参照)の製造装置1(以下、単に製造装置1という。)について図1〜図5を参照して以下に説明する。この製造装置1は、図1〜図5に示す通り、溶融した熱可塑性樹脂を線条10として下方に押し出して降下させる複数の押出孔71を有する口金70と、降下する集合体11を挟んで対向する一対の案内部材であるシュート80a,80bと、集合体11を冷却する水槽90と、押出孔71の下方で一対が対向して設けられ、周設される無端部材41が間隙Rを有するコンベヤ40a,40bと、コンベヤ40a,40bの内部領域Iに設けられ、間隙Rから集合体11に向かって冷却水を噴出する噴出孔20と、を備え、線条10の降下速度より遅い速度で集合体11をコンベヤ40a,40bにより引き取り、噴出孔20によって冷却水を噴出しつつ水槽90で冷却することにより、集合体11を立体網状構造体15となすものである。以下、各部について説明する。   A manufacturing apparatus 1 (hereinafter simply referred to as manufacturing apparatus 1) of a three-dimensional network structure 15 (see FIG. 5) according to Example 1 of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 to 5, this manufacturing apparatus 1 sandwiches a base 70 having a plurality of extrusion holes 71 for extruding and lowering a molten thermoplastic resin as a filament 10 and a descending assembly 11. A pair of opposed chutes 80a and 80b, a water tank 90 that cools the assembly 11, and a pair are provided opposite to each other below the extrusion hole 71, and a circumferentially provided endless member 41 has a gap R. The conveyors 40a and 40b, and the ejection holes 20 that are provided in the inner region I of the conveyors 40a and 40b and eject the cooling water from the gap R toward the assembly 11, are slower than the descending speed of the filament 10. The aggregate 11 is taken up by the conveyors 40 a and 40 b and cooled in the water tank 90 while ejecting the cooling water through the ejection holes 20, thereby forming the aggregate 11 as the three-dimensional network structure 15. Hereinafter, each part will be described.

まず噴出孔20について説明する。噴出孔20は、図4,図5に示す通り、コンベヤ40a,40bのそれぞれの内部領域Iにおいて設けられるノズル21の先端に備わり、コンベヤ40a,40bに挟まれる引取領域Uに向かって間隙Rを通して冷却水を噴出するように設定される。ノズル21は、図3〜図5に示す通り、コンベヤ40a,40bの内部領域Iにおいて横方向に延設される上フレーム50と下フレーム51にそれぞれ3個ずつ設けられ、これらが供給パイプ22に連通し、外部の水源(図示略)から冷却水が供給される。各噴出孔からの水量は、ポンプ(図示略)により2〜50リットル/分に設定することが好ましく、4〜40リットル/分に設定することがより好ましく、6〜20リットル/分に設定することがさらに好ましい。なお、内部領域Iとはコンベヤ40a,40bにおいて無端部材41によって隔てられる内部の領域をいい、引取領域Uとは、一対のコンベヤ40a,40bに挟まれる領域であって、集合体11が引き取られる際に通過する領域をいう。コンベヤ40a,40bの構成や集合体11については後に説明する。   First, the ejection hole 20 will be described. As shown in FIGS. 4 and 5, the ejection hole 20 is provided at the tip of the nozzle 21 provided in each of the inner regions I of the conveyors 40a and 40b, and passes through the gap R toward the take-up region U sandwiched between the conveyors 40a and 40b. The cooling water is set to be ejected. As shown in FIGS. 3 to 5, three nozzles 21 are provided in each of the upper frame 50 and the lower frame 51 extending in the lateral direction in the inner region I of the conveyors 40 a and 40 b, and these are provided in the supply pipe 22. In communication, cooling water is supplied from an external water source (not shown). The amount of water from each ejection hole is preferably set to 2 to 50 liters / minute by a pump (not shown), more preferably set to 4 to 40 liters / minute, and set to 6 to 20 liters / minute. More preferably. The internal area I is an internal area separated by the endless member 41 in the conveyors 40a and 40b, and the take-up area U is an area sandwiched between the pair of conveyors 40a and 40b, and the assembly 11 is taken up. An area that passes through. The configuration of the conveyors 40a and 40b and the assembly 11 will be described later.

噴出孔20を設ける場所は、例示する箇所に限られず、内部領域Iにおいて適宜選択することができる。すなわち、噴出孔20は、例示のようなコンベヤ40a,40bの中間部に限られず、コンベヤ40a,40bの上部や下部に設けてもよいし、これら複数箇所に設けてもよい。また、噴出孔20は片面に6箇所設けてあるが、個数は限定されるものではなく、一対のコンベアについて少なくとも1箇所、好ましくは2〜6箇所設けられる。また、ノズル21には外部の水源(図示略)から新鮮な水が供給されるが、これに限らず、例えば水槽90の下部等の比較的低温な水を取水し、循環ポンプ(図示略)によって水流をノズル21につなげ、噴出孔20から供給する等して、水槽90内を撹拌することとしてもよい。   The location where the ejection holes 20 are provided is not limited to the illustrated locations, and can be selected as appropriate in the internal region I. In other words, the ejection holes 20 are not limited to the intermediate portions of the conveyors 40a and 40b as illustrated, and may be provided at the upper and lower portions of the conveyors 40a and 40b, or may be provided at a plurality of these locations. Moreover, although the jet hole 20 is provided in six places on one side, the number is not limited and at least one place, preferably 2 to 6 places are provided for a pair of conveyors. Further, fresh water is supplied to the nozzle 21 from an external water source (not shown). However, the present invention is not limited to this. For example, relatively low-temperature water such as a lower part of the water tank 90 is taken in, and a circulation pump (not shown). It is good also as stirring the inside of the water tank 90, for example by connecting a water flow to the nozzle 21 and supplying it from the ejection hole 20.

噴出孔20は、間隙Rの上下間隔よりも小さく設定すると、水圧の損失を少なくして集合体11の内部まで効果的に冷却することができて好ましい。本実施例ではコンベヤ40a,40bに周設される無端部材41は、横方向に長尺な板材42が連結部材である無端チェーン43により縦方向に連結して周設されることより構成され、間隙Rは板材42の上下間隔として設けられるため、これよりも小さな噴出孔20に設定している。   If the ejection holes 20 are set to be smaller than the vertical interval of the gap R, it is preferable that the loss of water pressure can be reduced and the inside of the assembly 11 can be effectively cooled. In this embodiment, the endless member 41 provided around the conveyors 40a and 40b is constituted by a plate member 42 which is elongated in the horizontal direction and connected in the vertical direction by an endless chain 43 which is a connecting member. Since the gap R is provided as a vertical interval of the plate member 42, the gap R is set to a smaller ejection hole 20 than this.

一対のコンベヤ40a,40bがそれぞれ備える無端部材41は、図2,図4に示す通り、横方向に長尺な板材42が無端チェーン43により縦方向に連結して周設されることより構成される。一対のコンベヤ40a,40bのうち一方のコンベヤ40aは、図2〜図4に示す通り、上部駆動シャフト44と下部駆動シャフト45とを備え、これらは正面フレーム46aと背面フレーム47aとの間において回動自在に軸支される。一対のコンベヤ40a,40bのうち他方のコンベヤ40bも同様にして、上部駆動シャフト44と下部駆動シャフト45とを備え、これらは正面フレーム46bと背面フレーム47bとの間において回動自在に軸支される。正面フレーム46a,46bと背面フレーム47a,47bとの間には、コンベヤ40a,40bの内部領域Iにおいて上フレーム50と下フレーム51とが横方向に延設される。上部駆動シャフト44および下部駆動シャフト45の間と、上部駆動シャフト44および下部駆動シャフト45の間には、それぞれにおいて対応する間隔で上スプロケット48および下スプロケット49が設けられ、無端チェーン43は、上スプロケット48および下スプロケット49に張力を掛けて周設される。なお、無端部材41としては上記の構成の他、ゴム製や金属製のメッシュを繋げた無端ベルトを用いることもできる。なお、図3〜図5における上スプロケット48および下スプロケット49の歯は省略して図示している。   The endless member 41 included in each of the pair of conveyors 40a and 40b is configured by a plate member 42 which is long in the horizontal direction connected in the vertical direction by an endless chain 43 and provided circumferentially as shown in FIGS. The As shown in FIGS. 2 to 4, one of the pair of conveyors 40a and 40b includes an upper drive shaft 44 and a lower drive shaft 45, which rotate between the front frame 46a and the rear frame 47a. It is pivotally supported. Similarly, the other conveyor 40b of the pair of conveyors 40a and 40b includes an upper drive shaft 44 and a lower drive shaft 45, which are pivotally supported between a front frame 46b and a rear frame 47b. The Between the front frames 46a, 46b and the back frames 47a, 47b, an upper frame 50 and a lower frame 51 extend in the lateral direction in the inner region I of the conveyors 40a, 40b. Between the upper drive shaft 44 and the lower drive shaft 45 and between the upper drive shaft 44 and the lower drive shaft 45, an upper sprocket 48 and a lower sprocket 49 are provided at corresponding intervals, respectively. The sprocket 48 and the lower sprocket 49 are provided with tension. In addition, as the endless member 41, an endless belt having a mesh made of rubber or metal can be used in addition to the above configuration. Note that the teeth of the upper sprocket 48 and the lower sprocket 49 in FIGS. 3 to 5 are omitted.

板材42は金属製が好ましいが、その他、セラミック、耐熱性プラスチック、炭素繊維、FRP、あるいは、これらの複合材でもよい。例えば、金属製の表面にプラスチック製の板を積層し、線条がプラスチックの面に接触するようにしてもよい。   The plate material 42 is preferably made of metal, but may be ceramic, heat resistant plastic, carbon fiber, FRP, or a composite material thereof. For example, a plastic plate may be laminated on a metal surface so that the filament contacts the plastic surface.

コンベヤ40aには、駆動モータ、駆動チェーン、各種ギヤ、変速機、制御装置、その他計器類等から構成される駆動制御装置が接続され(図示略)、これによって上部駆動シャフト44には回転駆動力が付与される。この回転駆動力は同時に下部駆動シャフト45にも伝達されて、上部駆動シャフト44および下部駆動シャフト45は同期回転する(図4参照)。   The conveyor 40a is connected to a drive control device (not shown) including a drive motor, a drive chain, various gears, a transmission, a control device, and other instruments, and thereby the rotational drive force is applied to the upper drive shaft 44. Is granted. This rotational driving force is simultaneously transmitted to the lower drive shaft 45, and the upper drive shaft 44 and the lower drive shaft 45 rotate synchronously (see FIG. 4).

一対のコンベヤ40a,40bは、図1,図2,図3に示す通り、それぞれ正面フレーム46aおよび背面フレーム47a、正面フレーム46bおよび背面フレーム47bにより挟持されて水槽90内に設けられる。正面フレーム46aおよび背面フレーム47aは水槽90の内部に固設されるが、正面フレーム46bおよび背面フレーム47bは水槽90の内部において左右にスライドし、一対のコンベヤ40a,40bの対向間隔C1を調節可能としている。   The pair of conveyors 40a and 40b are provided in the water tank 90 while being sandwiched between the front frame 46a and the back frame 47a, the front frame 46b and the back frame 47b, respectively, as shown in FIGS. Although the front frame 46a and the back frame 47a are fixed inside the water tank 90, the front frame 46b and the back frame 47b slide to the left and right inside the water tank 90, and the facing distance C1 between the pair of conveyors 40a and 40b can be adjusted. It is said.

図示は略すが、一対のコンベヤ40a,40bの対向間隔C1を調節可能とする間隔調節機構を設けてもよい。例えば、シャフト、ハンドル、歯車等により構成が可能であり、一対のコンベヤ40a,40bのうちの、いずれか一方を、シャフトに沿って水平移動する構成が挙げられる。なお、間隔調節機構における位置調節の機械的な伝達は一例にすぎずその他の構成を採ることもできる。例えば、歯車としては、傘歯車、または、ウォームギヤを用いてもよい。   Although illustration is omitted, an interval adjusting mechanism that can adjust the opposing interval C1 of the pair of conveyors 40a and 40b may be provided. For example, it can be configured with a shaft, a handle, a gear, and the like, and includes a configuration in which one of the pair of conveyors 40a and 40b is horizontally moved along the shaft. The mechanical transmission of the position adjustment in the interval adjustment mechanism is merely an example, and other configurations can be adopted. For example, a bevel gear or a worm gear may be used as the gear.

一対のコンベヤ40a,40bの対向間隔C1は、シュート80a,80bの下端部の間隔S1よりも狭く設ける(図4参照)。対向間隔C1は間隔S1に対して1〜13%狭くすることが好ましい。1%より小さいと製品の反発力の向上や厚みの安定性において効果が少なく、13%より大きいと板材42の跡が製品に残ったり、コンベヤ40a,40bの駆動への負担が増大したりしてしまうからである。また、対向間隔C1は間隔S1に対して2〜10%狭くすることがより好ましく、3〜7%狭くすることがさらに好ましい。   The facing interval C1 between the pair of conveyors 40a and 40b is set narrower than the interval S1 between the lower ends of the chutes 80a and 80b (see FIG. 4). The facing interval C1 is preferably narrowed by 1 to 13% with respect to the interval S1. If it is smaller than 1%, the effect of improving the repulsive force of the product and the stability of the thickness is small, and if it is larger than 13%, the trace of the plate material 42 remains on the product or the burden on driving the conveyors 40a and 40b increases. Because it will end up. Further, the facing interval C1 is more preferably 2 to 10% narrower than the interval S1, and further preferably 3 to 7% narrower.

口金70は、図4に示す通り、略長四辺形内に複数個が配列された押出孔71を有し、溶融した熱可塑性樹脂に圧力を加えて吐出することにより線条10を下方に降下させるものである。押出孔71は、略長四辺形内に複数個が配列される。押出孔71は複数個が配列されるため、一群の線条は押出孔71の配列形状を降下方向の断面形状として有する集合体11となる。降下する集合体11は、外周において長手側面と短手側面と二面ずつ有することとなる。   As shown in FIG. 4, the base 70 has a plurality of extrusion holes 71 arranged in a substantially long quadrilateral, and the line 10 is lowered downward by applying pressure to the molten thermoplastic resin and discharging it. It is something to be made. A plurality of extrusion holes 71 are arranged in a substantially long quadrilateral. Since a plurality of the extrusion holes 71 are arranged, the group of filaments becomes the aggregate 11 having the arrangement shape of the extrusion holes 71 as a cross-sectional shape in the descending direction. The descending assembly 11 has two long sides and two short sides on the outer periphery.

シュート80a,80bは、図4,図5に示す通り、口金70の下方において、降下する集合体11の長手側面を挟んで対向するように配置される一対の案内部材である。一対のシュート80a,80bはそれぞれ集合体11に向かって下方に傾斜する形状であり、その下端部が対向する間隔S1は口金70における押出孔71の短手方向の配列間隔D1と同じか、それよりも狭く設定される。   The chute | shoots 80a and 80b are a pair of guide members arrange | positioned so that it may oppose on both sides of the longitudinal side of the assembly 11 to descend | fall below the nozzle | cap | die 70, as shown in FIG. 4, FIG. The pair of chutes 80a and 80b each have a shape inclined downward toward the assembly 11, and the interval S1 at which the lower ends thereof are opposed is the same as the arrangement interval D1 in the short direction of the extrusion holes 71 in the base 70, or It is set narrower than.

また、図1に示すように、集合体11の短手側面を挟んで対向するように短手シュート81a,81bを配置している。なお、短手シュート81a,81bは平面図である図1に示しているが、その傾斜等の構造は図4,図5に示すシュート80a,80bと同様なものである。短手シュート81a,81bの下端部が対向する間隔は口金70における押出孔71の長手方向の配列間隔よりも狭く設定される。なお、シュート80a,80bおよび短手シュート81a,81bを用いなくても本発明は適用できる。   Moreover, as shown in FIG. 1, the short chutes 81a and 81b are arranged so as to face each other with the short side surface of the aggregate 11 interposed therebetween. Although the short shoots 81a and 81b are shown in FIG. 1 which is a plan view, the structure of the inclination and the like is the same as the chutes 80a and 80b shown in FIGS. The interval at which the lower ends of the short chutes 81 a and 81 b face each other is set to be narrower than the arrangement interval in the longitudinal direction of the extrusion holes 71 in the base 70. The present invention can be applied without using the chutes 80a and 80b and the short chutes 81a and 81b.

長手方向に延設されるシュート80a,80bの下端部および短手シュート81a,81bの下端部に囲まれる領域が、集合体11が通過する最小断面積である成形開口部82となる(図1参照)。傾斜面の形状は図4,図5に示すものに限られず、一つの平面的な斜面からなるものや、傾斜率が変化する曲面であってもよい。長手方向に延設されるシュート80a,80bと短手シュート81a,81bは、独立して設けても、直交する四隅において連続して一体的に設けてもよい。   A region surrounded by the lower ends of the chutes 80a and 80b extending in the longitudinal direction and the lower ends of the short chutes 81a and 81b is a molding opening 82 which is the minimum cross-sectional area through which the assembly 11 passes (FIG. 1). reference). The shape of the inclined surface is not limited to that shown in FIGS. 4 and 5, and may be a single flat inclined surface or a curved surface with a changing inclination rate. The chutes 80a and 80b and the short chutes 81a and 81b extending in the longitudinal direction may be provided independently, or may be provided continuously and integrally at four orthogonal corners.

シュート80a,80bの上方には水供給口83が設けられる。水供給口83は、シュート80a,80bの長手方向のほぼ全幅に亘る供給パイプ84a,84bに適宜間隔で複数個が設けられ、図4の矢印Wに示すようにシュート80a,80bの上面に水流を供給する。短手シュート81a,81bへの水流の供給は、供給パイプ84a,84bからの水流を調節して流用してもよいし、別途、短手シュート81a,81bの上方に同様な供給パイプ(図示略)を設けてもよい。   A water supply port 83 is provided above the chutes 80a and 80b. A plurality of water supply ports 83 are provided at appropriate intervals in the supply pipes 84a and 84b extending over almost the entire width in the longitudinal direction of the chutes 80a and 80b. As shown by an arrow W in FIG. Supply. The supply of the water flow to the short chutes 81a and 81b may be diverted by adjusting the water flow from the supply pipes 84a and 84b, or a similar supply pipe (not shown) is provided above the short chutes 81a and 81b. ) May be provided.

水槽90は、集合体11を冷却するためのものであって、コンベヤ40a,40bの全体が水没する水位に調節可能な大きさを有するものである。コンベヤ40a,40bの上部が水上にあるように水位を設定してもよい。シュート80a,80bの下端部を基準にする水位H(図4参照)は、0≦Wd≦30(mm)に設定することが好ましく、1≦Wd≦20(mm)に設定することがより好ましく、3≦Wd≦12(mm)の高さに設定することがさらに好ましい。水位はシュート80a,80bの下端部の高さと同一の高さを含み、これ以上の水位であれば本発明を実施できる。しかし、製造時の水位のばらつきや機械の水平度などを考慮して水位高さを設定することが好ましい。製造条件にも影響されるが、水位を3mm以上の高さに設定すれば、水位がシュート80a,80bの下端部より低くなることを防止できる。一方、水位がシュート80a,80bの下端部から30mmを越すと、条件によっては樹脂の固化が始まり繊維同士の融着が悪くなり、また表面の粗さが増して不適当となる。   The water tank 90 is for cooling the aggregate 11, and has a size that can be adjusted to a water level at which the entire conveyors 40a and 40b are submerged. The water level may be set so that the upper portions of the conveyors 40a and 40b are on the water. The water level H (see FIG. 4) relative to the lower ends of the chutes 80a and 80b is preferably set to 0 ≦ Wd ≦ 30 (mm), more preferably set to 1 ≦ Wd ≦ 20 (mm). More preferably, the height is set to 3 ≦ Wd ≦ 12 (mm). The water level includes the same height as the lower ends of the chutes 80a and 80b, and the present invention can be implemented if the water level is higher than this. However, it is preferable to set the water level height in consideration of variations in the water level at the time of manufacture and the level of the machine. Although affected by the manufacturing conditions, if the water level is set to a height of 3 mm or more, the water level can be prevented from becoming lower than the lower ends of the chutes 80a and 80b. On the other hand, when the water level exceeds 30 mm from the lower ends of the chutes 80a and 80b, depending on the conditions, the resin starts to be solidified and the fibers are poorly fused, and the surface roughness increases, which is inappropriate.

以下、本発明の実施例1による立体網状構造体の製造方法について図5を参照して説明する。公知の構成部分については、その詳細な説明は省略するので、日本国特許第4350286号、U.S.Patent No.7,625,629等を参照されたい。   Hereinafter, the manufacturing method of the three-dimensional network structure by Example 1 of this invention is demonstrated with reference to FIG. The detailed description of known components is omitted, so Japanese Patent No. 4350286, U.S. Pat. S. Patent No. See 7,625,629 and the like.

まず、熱可塑性合成樹脂を主原料とした原料を溶融する。溶融された原料は、口金70内部へと送られ、圧力を加えられて、下部の押出孔71から下方へ押し出しされて線条10となる。口金70内部の温度範囲は100〜400℃、押出量は20〜200Kg/時間、等に設定可能である。口金70内部における圧力は、例えば75mmスクリューの吐出圧によるものが挙げられ、その圧力範囲は0.2〜25MPa程度である。厚みが100mmを越える立体網状構造体15を製造する場合は、ギヤポンプ等によりダイス圧力の均一化を図ることが好ましい。口金70から吐出されたそれぞれの線条10は、押出孔71の複数個の配列により、複数本の線条10からなる集合体11となる。   First, a raw material mainly composed of a thermoplastic synthetic resin is melted. The melted raw material is sent into the base 70, pressure is applied, and it is extruded downward from the lower extrusion hole 71 to become the filament 10. The temperature range inside the base 70 can be set to 100 to 400 ° C., the extrusion amount can be set to 20 to 200 Kg / hour, and the like. The pressure in the base 70 is, for example, that due to the discharge pressure of a 75 mm screw, and the pressure range is about 0.2 to 25 MPa. When manufacturing the three-dimensional network 15 having a thickness exceeding 100 mm, it is preferable to make the die pressure uniform by a gear pump or the like. Each of the filaments 10 discharged from the base 70 becomes an aggregate 11 composed of a plurality of filaments 10 due to a plurality of arrangements of the extrusion holes 71.

集合体11のうち外周の長手側面に位置する線条10は、図5に示す通り、一対のシュート80a,80bの上に接地し、その接触により垂直落下軌道が乱され、隣り合う線条10とループ状に絡まり合いつつ、供給パイプ84a,84bから供給される水流に乗り、シュート80a,80bの上を滑り降りる。この際、線条10は重力の影響を直接的に受け、シュート80a,80bに沿って二次元的に絡合する。供給パイプ84a,84bから供給される水流は一対の短手シュート81a,81bにも及び、集合体11のうち、外周の短手側面に位置する線条10も同様にして短手シュート81a,81bの上を滑り降りることとなる。   As shown in FIG. 5, the filament 10 positioned on the outer peripheral longitudinal side surface of the aggregate 11 is grounded on the pair of chutes 80 a and 80 b, and the vertical drop trajectory is disturbed by the contact, and the adjacent filament 10 While entangled in a loop shape, it rides on the water flow supplied from the supply pipes 84a and 84b and slides down on the chute 80a and 80b. At this time, the filament 10 is directly affected by gravity and is intertwined two-dimensionally along the chutes 80a and 80b. The water flow supplied from the supply pipes 84a and 84b also reaches the pair of short chutes 81a and 81b, and the line 10 located on the short side surface of the outer periphery of the aggregate 11 is similarly short chutes 81a and 81b. Will slide down.

集合体11のうち、長手方向に延びるシュート80a,80bおよび短手シュート81a,81bのいずれにも接触せずに落下した線条10は、成形開口部82を通過する。このとき、成形開口部82を通過する線条10のうち、シュート80a,80bおよび短手シュート81a,81bの下端近くを通過するものは、シュート80a,80bおよび短手シュート81a,81bを滑り降りてくる線条10と接触し、ループ状に絡まり合い、さらにその接触絡合による落下軌道の撹乱が隣り合う中心方向の線条10に若干の範囲で伝播しつつ落下する。成形開口部82を通過する線条10のうち、成形開口部82の中央付近を通過するものは、上記のような絡合をすることなく水面に着水する(図5参照)。ここにおいて、コンベヤ40a,40bによる引き取り速度は集合体11の落下速度よりも遅いため、着水した線条10は撓み、水面付近でループ状に絡まり合うこととなる。   Of the aggregate 11, the filament 10 that has fallen without contacting any of the chutes 80a and 80b and the short chutes 81a and 81b extending in the longitudinal direction passes through the forming opening 82. At this time, among the filaments 10 that pass through the molding opening 82, those that pass near the lower ends of the chutes 80a and 80b and the short chutes 81a and 81b slide down the chutes 80a and 80b and the short chutes 81a and 81b. It comes into contact with the coming wire 10 and is entangled in a loop shape, and further, the disturbance of the drop trajectory due to the contact entanglement propagates to the adjacent wire 10 in the central direction and falls. Of the filaments 10 that pass through the molding opening 82, those that pass near the center of the molding opening 82 land on the water surface without being entangled as described above (see FIG. 5). Here, since the take-up speed by the conveyors 40a and 40b is slower than the dropping speed of the aggregate 11, the landed wire 10 is bent and entangled in a loop shape near the water surface.

このように集合体11は立体網状構造が形成され、水槽90にて冷却されつつ、コンベヤ40a,40bにより引き取られ降下する。コンベヤ40a,40bの最小対向間隔の位置まで降下した集合体11は、コンベヤ40a,40bによって、成形開口部82の短手方向の間隔S1よりも小さな対向間隔C1で挟持され圧縮作用を受ける(図5参照)。コンベヤ40a,40bの最小対向間隔の位置まで降下した時点では、水没による集合体11の冷却固化がまだ完全に終わっていないので、コンベヤ40a,40bでの挟持により圧縮成形効果を得ることができるものである。   In this way, the aggregate 11 has a three-dimensional network structure and is taken down by the conveyors 40a and 40b while being cooled in the water tank 90. The assembly 11 lowered to the position of the minimum facing interval of the conveyors 40a and 40b is sandwiched and compressed by the conveyors 40a and 40b at the facing interval C1 smaller than the interval S1 in the short direction of the forming opening 82 (see FIG. 5). At the time when the conveyors 40a and 40b are lowered to the position of the minimum facing interval, the cooling and solidification of the assembly 11 due to submersion is not yet complete, so that a compression molding effect can be obtained by sandwiching with the conveyors 40a and 40b. It is.

引取領域Uにおいて噴出孔20の位置まで降下した集合体11は、コンベヤ40a,40bの内部領域Iから無端部材41の間隙Rを通して、噴出孔20によって噴出される冷却水を受ける(図5参照)。集合体11の冷却は水槽90に着水した時点から冷却が始まるが、集合体11の内部の冷却が遅れることもあるところ、噴出孔20からの冷却水により確実に冷却されるものである。引き続き、コンベヤ40a,40bにより引き取り、送り出せば、立体網状構造に形成された集合体11は冷却が進行し、形状が固定される。   The assembly 11 lowered to the position of the ejection hole 20 in the take-up area U receives the cooling water ejected by the ejection hole 20 from the inner area I of the conveyors 40a and 40b through the gap R of the endless member 41 (see FIG. 5). . The cooling of the aggregate 11 starts from the point of time when it reaches the water tank 90, but the cooling inside the aggregate 11 may be delayed, but it is surely cooled by the cooling water from the ejection holes 20. Then, if it picks up and conveys by the conveyors 40a and 40b, the aggregate | assembly 11 formed in the solid network structure will progress cooling, and a shape will be fixed.

上記操作を連続し、水槽90の左方向に集合体11を引取り、水槽90から引き出し、所望の長さに切断すれば立体網状構造体15を得ることができる。立体網状構造体15は、成形開口部82と同様の形状を断面に有し、コンベヤ40a,40bで補助的な圧縮成形を受けた状態の略板状となる。なお、短手シュート81a,81bを設けなかった場合は、必要に応じて立体網状構造体15の短手側面の端面処理を行うものとする。なお、シュート80a,80bを用いない場合は直接にコンベヤ40a,40bに接触しつつ着水することとなるが、上記と同様にして立体網状構造体15が形成される。   The three-dimensional network structure 15 can be obtained by continuing the above operation, pulling out the assembly 11 in the left direction of the water tank 90, pulling it out from the water tank 90, and cutting it to a desired length. The three-dimensional network structure 15 has a shape similar to that of the molding opening 82 in a cross-section, and has a substantially plate shape in a state of being subjected to auxiliary compression molding by the conveyors 40a and 40b. In addition, when the short chutes 81a and 81b are not provided, the end surface treatment of the short side surface of the three-dimensional network structure 15 is performed as necessary. In addition, when not using chute | shoots 80a and 80b, it will land while contacting the conveyors 40a and 40b directly, but the three-dimensional network structure 15 is formed like the above.

本発明による立体網状構造体15の原料の熱可塑性樹脂としてポリエチレン、ポリプロピレンなどのポリオレフィン、ポリエチレンテレフタレートなどのポリエステル、ナイロン66などのポリアミド、ポリ塩化ビニル、ポリスチレン、上記樹脂をベースとし共重合したコポリマーやエラストマー、上記樹脂をブレンドしたもの等が挙げられる。抗菌剤などのブレンドされた原料も可能である。例えば、立体網状構造体15を寝具マットレスとして用いる場合は、その原料としてはポリエチレンが好適である。また、原料の熱可塑性樹脂に抗菌剤や不燃材、難燃剤を混合し、立体網状構造体15がこれらの機能を備えるようにしてもよい。   As a thermoplastic resin as a raw material of the three-dimensional network structure 15 according to the present invention, a polyolefin such as polyethylene and polypropylene, a polyester such as polyethylene terephthalate, a polyamide such as nylon 66, polyvinyl chloride, polystyrene, a copolymer based on the above resin, Examples include elastomers and blends of the above resins. Blended raw materials such as antibacterial agents are also possible. For example, when the three-dimensional network structure 15 is used as a bedding mattress, polyethylene is suitable as the raw material. Moreover, an antibacterial agent, a non-combustible material, and a flame retardant may be mixed with the raw material thermoplastic resin so that the three-dimensional network structure 15 has these functions.

本発明の実施例1により製造される立体網状構造体15について説明する。立体網状構造体15は、溶融した熱可塑性樹脂が複数の線条10として下方に押し出され、線条10が水面91に接触し、または、降下する線条10の集合体11を挟んで対向する一対のシュート80a,80bまたはコンベヤ40a,40bに接触し、線条10が不規則に絡まり合い、その絡合部が熱溶着してループが形成され、コンベヤ40a,40bにより集合体11が挟持され線条10の降下速度より遅い速度で水中に引き取られ、引取領域Uに向かってコンベヤ40a,40bの内部領域Iから間隙Rを通して冷却水が噴出され、水中で冷却されて形成されるものである。これによって、立体網状構造体15は、複数本の線条10がループ状に無秩序に絡まり合い、熱接着された立体網状構造を備えることとなる。立体網状構造体15において、製造段階での集合体11の外周部の長手側面と短手側面に相当する側面に、内部17と比較して嵩密度の大きな表面部16が形成される。表面部16は、製造段階において、線条10がシュート80a,80bに沿って二次元的に絡合したことによるものである。   The three-dimensional network structure 15 manufactured by Example 1 of the present invention will be described. In the three-dimensional network structure 15, the molten thermoplastic resin is extruded downward as a plurality of filaments 10, and the filaments 10 are in contact with the water surface 91, or are opposed to each other with the aggregate 11 of the filaments 10 that descend. The pair of chutes 80a, 80b or the conveyors 40a, 40b come into contact with each other, the filaments 10 are irregularly entangled, the entangled portions are thermally welded to form a loop, and the assembly 11 is held by the conveyors 40a, 40b. It is drawn into the water at a speed slower than the descending speed of the filament 10, and the cooling water is ejected from the inner area I of the conveyors 40a, 40b toward the take-up area U through the gap R and cooled in the water. . As a result, the three-dimensional network structure 15 has a three-dimensional network structure in which a plurality of filaments 10 are randomly entangled in a loop shape and thermally bonded. In the three-dimensional network structure 15, a surface portion 16 having a larger bulk density than the inner portion 17 is formed on the side surfaces corresponding to the long side surface and the short side surface of the outer peripheral portion of the assembly 11 at the manufacturing stage. The surface portion 16 is due to the two-dimensional entanglement of the filament 10 along the chutes 80a and 80b in the manufacturing stage.

本発明の実施例1による効果について説明する。噴出孔20から引取領域Uに向けて冷却水を噴出することにより、引取中の集合体11を確実に冷却することができる。これによって立体網状構造体15の冷却不足による形成不良を防止し、製造効率を向上させることができる。   The effect by Example 1 of this invention is demonstrated. By ejecting the cooling water from the ejection hole 20 toward the take-up region U, the assembly 11 being taken up can be reliably cooled. Thereby, formation defects due to insufficient cooling of the three-dimensional network structure 15 can be prevented, and the manufacturing efficiency can be improved.

噴出孔20から新鮮な冷却水を連続的に供給することによって、製造装置1の長時間運転においても水温の上昇を防止し、立体網状構造体15の品質を安定化することができる。また、水槽90内の低温な部分の水を循環させることによっても、冷却に重要な引取領域の局所的な温度上昇を防止し、立体網状構造体15の形成を良好に保つことができる。   By continuously supplying fresh cooling water from the ejection holes 20, it is possible to prevent an increase in water temperature even during long-time operation of the manufacturing apparatus 1 and to stabilize the quality of the three-dimensional network structure 15. In addition, by circulating water at a low temperature in the water tank 90, it is possible to prevent a local temperature increase in the take-up region important for cooling and to keep the formation of the three-dimensional network structure 15 well.

水槽90内の全体的な温度上昇や局所的な温度上昇を防止することによって、製造装置の熱損傷を防ぎ、長寿命化が図られる。   By preventing an overall temperature rise or a local temperature rise in the water tank 90, thermal damage to the manufacturing apparatus can be prevented and the life can be extended.

本実施例1による立体網状構造体15には表面部16が形成されることにより内部17の冷却が進行しにくいものとなってしまうが、噴出孔20から引取領域Uに向けて冷却水を噴出することにより、内部17まで直接的に冷却水を当てることが可能となる。また、噴出された水により、水の強制対流がおこり、立体網状構造体と水とで効率的に熱交換が行われる。また、異形断面の口金による集合体11を冷却する場合や、立体網状構造体15の厚みが大きい場合においても、表面部16を形成する場合と同様にして内部17の冷却が進行しにくいものとなってしまうが、適切に内部17を冷却することができる。すなわち、噴出孔20から冷却水を噴出することにより、様々な立体網状構造体15の嵩密度、形状、大きさ等に対応する汎用性が向上することとなる。   In the three-dimensional network structure 15 according to the first embodiment, the surface portion 16 is formed, so that the cooling of the inside 17 is difficult to proceed, but the cooling water is ejected from the ejection hole 20 toward the take-up region U. By doing so, it becomes possible to apply cooling water directly to the inside 17. In addition, forced convection of water occurs due to the ejected water, and heat exchange is efficiently performed between the three-dimensional network structure and water. Further, when the assembly 11 is cooled by a die having a modified cross-section or when the three-dimensional network structure 15 is thick, the cooling of the interior 17 is difficult to proceed as in the case of forming the surface portion 16. However, the inside 17 can be appropriately cooled. That is, by ejecting cooling water from the ejection holes 20, versatility corresponding to the bulk density, shape, size, and the like of various three-dimensional network structures 15 is improved.

本実施例1の変形例として、噴出孔20を吸引孔(図示略)に変えることもできる。吸引孔は、吸引管によってポンプに接続され、引取領域∪から内部領域Iに間隙Rを通して水を吸引する。引取領域U内の、集合体11付近の局所的に温度上昇した水は、吸引孔によって吸引され、水の強制対流により周囲から比較的低温な水が供給される。そのため、立体網状構造体と水とで効率的に熱交換が行われ、適切に内部17を冷却することができる。吸引された水は水槽90の下部等に供給して循環させてもよいし、外部へ排出されてもよい。また、吸引孔と噴出孔の両方を設けてもよい。   As a modification of the first embodiment, the ejection hole 20 can be changed to a suction hole (not shown). The suction hole is connected to the pump by a suction pipe, and sucks water from the take-up area ∪ to the inner area I through the gap R. The water whose temperature has risen locally in the vicinity of the aggregate 11 in the take-up region U is sucked by the suction holes, and relatively cool water is supplied from the surroundings by forced convection of water. Therefore, heat exchange is efficiently performed between the three-dimensional network structure and water, and the inside 17 can be appropriately cooled. The sucked water may be supplied to the lower part of the water tank 90 and circulated, or may be discharged to the outside. Moreover, you may provide both a suction hole and an ejection hole.

本発明の実施例2による立体網状構造体215の製造装置201(以下、単に製造装置201という。)について図6〜図9を参照して以下に説明する。製造装置201は、溶融した熱可塑性樹脂を線条210として下方に押し出して降下させる複数の押出孔271を有する口金270と、降下する線条集合体211を挟んで対向する一対の案内部材であるシュート280a,280bと、線条集合体211を冷却する水槽290と、押出孔271の下方で一対が対向して設けられ、周設される無端部材241が間隙を有するコンベヤ240a,240bと、コンベヤ240a,240bの内部領域Iに設けられ、無端部材241の撓みを規制するガイド230と、を備え、線条210の降下速度より遅い速度で集合体211をコンベヤ240a,240bにより引き取り、水槽290で冷却することにより、集合体211を立体網状構造体215となすものである。以下、各部について説明する。   A manufacturing apparatus 201 (hereinafter simply referred to as a manufacturing apparatus 201) for a three-dimensional network structure 215 according to a second embodiment of the present invention will be described below with reference to FIGS. The manufacturing apparatus 201 is a pair of guide members opposed to each other with a die 270 having a plurality of extrusion holes 271 for extruding and lowering a molten thermoplastic resin as a filament 210 and sandwiching the descending filament assembly 211. Chute 280a, 280b, water tank 290 for cooling the filament aggregate 211, a pair of opposed endless members 241 provided below the extrusion hole 271, and conveyors 240a, 240b having a gap, conveyors 240a and 240b, and a guide 230 that restricts the bending of the endless member 241. The assembly 211 is taken up by the conveyors 240a and 240b at a speed lower than the descending speed of the filament 210. By cooling, the aggregate 211 becomes a three-dimensional network structure 215. Hereinafter, each part will be described.

ガイド230は、内部領域Iのうち集合体211に接する側において、無端部材241の直線部と平行な縦方向に延設されるものである。無端部材241を駆動する回動体である上スプロケット248および下スプロケット249と同軸である上部駆動シャフト244および下部駆動シャフト245に設けられ、無端部材241の撓みを規制する円形ガイド(図示略)を設けてもよい。なお、内部領域Iとはコンベヤ240a,240bにおいて無端部材241によって隔てられる内部の領域をいう。以下、コンベヤ240a,240bの構成について説明した後、ガイド230について説明する。   The guide 230 extends in the longitudinal direction parallel to the straight portion of the endless member 241 on the side of the inner region I that contacts the assembly 211. A circular guide (not shown) is provided on the upper drive shaft 244 and the lower drive shaft 245 that are coaxial with the upper sprocket 248 and the lower sprocket 249 that are rotating bodies that drive the endless member 241, and restricts the bending of the endless member 241. May be. The internal region I is an internal region separated by the endless member 241 in the conveyors 240a and 240b. Hereinafter, after describing the configuration of the conveyors 240a and 240b, the guide 230 will be described.

一対のコンベヤ240a,240bがそれぞれ備える無端部材241は、図8に示す通り、横方向に長尺な板材242が無端チェーン243により縦方向に連結して周設されることより構成される。一対のコンベヤ240a,240bのうち一方のコンベヤ240aは、上部駆動シャフト244と下部駆動シャフト245とを備え、これらは正面フレーム246aと背面フレーム247aとの間において回動自在に軸支される。一対のコンベヤ240a,240bのうち他方のコンベヤ240bも同様にして、上部駆動シャフト244と下部駆動シャフト245とを備え、これらは正面フレーム246bと背面フレーム247bとの間において回動自在に軸支される。正面フレーム246a,246bと背面フレーム247a,247bとの間には、コンベヤ240a,240bの内部領域Iにおいて上フレーム250と下フレーム251とが横方向に延設される。上部駆動シャフト244および下部駆動シャフト245の間と、上部駆動シャフト244および下部駆動シャフト245の間には、それぞれにおいて対応する間隔で上スプロケット248および下スプロケット249が設けられ、無端チェーン243は、上スプロケット248および下スプロケット249に張力を掛けて周設される。なお、無端部材241としては上記の構成の他、ゴム製や金属製のメッシュを繋げた無端ベルトを用いることもできる。なお、図6〜図9における上スプロケット248および下スプロケット249の歯は省略して図示している。   As shown in FIG. 8, the endless member 241 provided in each of the pair of conveyors 240 a and 240 b is configured by a plate member 242 that is elongated in the horizontal direction and connected in the vertical direction by an endless chain 243. One conveyor 240a of the pair of conveyors 240a and 240b includes an upper drive shaft 244 and a lower drive shaft 245, which are pivotally supported between the front frame 246a and the rear frame 247a. Similarly, the other conveyor 240b of the pair of conveyors 240a and 240b includes an upper drive shaft 244 and a lower drive shaft 245, which are pivotally supported between the front frame 246b and the rear frame 247b. The Between the front frames 246a and 246b and the back frames 247a and 247b, an upper frame 250 and a lower frame 251 extend in the lateral direction in the inner region I of the conveyors 240a and 240b. Between the upper drive shaft 244 and the lower drive shaft 245 and between the upper drive shaft 244 and the lower drive shaft 245, an upper sprocket 248 and a lower sprocket 249 are provided at corresponding intervals, respectively. The sprocket 248 and the lower sprocket 249 are provided with tension. The endless member 241 may be an endless belt having a rubber or metal mesh connected in addition to the above configuration. Note that the teeth of the upper sprocket 248 and the lower sprocket 249 in FIGS. 6 to 9 are omitted.

一対のコンベヤ240a,240bは、実施例1と同様あるので、説明は略す。   Since the pair of conveyors 240a and 240b is the same as that of the first embodiment, the description thereof is omitted.

ガイド230は、コンベヤ240a,240bのそれぞれの内部領域Iのうち集合体211に接する側において、無端部材241の直線部と平行な縦方向に延設され、無端部材241の撓みを規制するガイド230である。すなわち、コンベヤ240a,240bは長尺の長円形に周設され二つの直線部を備えるが、このうち、一対のコンベヤ240a,240bに挟まれる領域であって集合体211が引き取られる際に通過する引取領域Uにある側の直線部であって、コンベヤ240a,240bのそれぞれの内部領域Iに、ガイド230は設けられる。ガイド230は、図8に示す通り、コンベヤ240a,240bの内部領域Iにおいて横方向に延設される上フレーム250と下フレーム251に固設され、周回する板材242に対して摺動するように設けられる。なお、図8では便宜上、無端チェーン243の手前側にガイド230が見える位置での部分断面状に図示している。ガイド230は、図7に示す通り、上部駆動シャフト244および下部駆動シャフト245の延設方向において、三つが設けられるが、これに限られず、製造する立体網状構造体215の大きさや形状、嵩密度・材質等による反発力等に応じて、数量、位置、形状等は、適宜調整できる。ガイド230の材質は硬質な樹脂製であるが、上記の製造における要素に応じて金属製、セラミックス製、炭素繊維製、あるいは、複合材料等を用いてもよい。   The guide 230 extends in the longitudinal direction parallel to the straight portion of the endless member 241 on the side of the inner region I of each of the conveyors 240a and 240b that contacts the assembly 211, and regulates the bending of the endless member 241. It is. That is, the conveyors 240a and 240b are provided in the shape of a long oval and have two straight portions. Of these, the conveyors 240a and 240b pass between the pair of conveyors 240a and 240b when the assembly 211 is taken up. The guide 230 is provided in each of the inner regions I of the conveyors 240a and 240b, which are straight portions on the side in the take-up region U. As shown in FIG. 8, the guide 230 is fixed to the upper frame 250 and the lower frame 251 extending in the lateral direction in the inner region I of the conveyors 240 a and 240 b, and slides with respect to the rotating plate member 242. Provided. For the sake of convenience, FIG. 8 shows a partial cross-sectional shape at a position where the guide 230 can be seen on the front side of the endless chain 243. As shown in FIG. 7, three guides 230 are provided in the extending direction of the upper drive shaft 244 and the lower drive shaft 245. However, the guide 230 is not limited to this, and the size, shape, and bulk density of the three-dimensional network structure 215 to be manufactured are not limited thereto. -The quantity, position, shape, etc. can be adjusted as appropriate according to the repulsive force of the material. The material of the guide 230 is made of a hard resin, but a metal, a ceramic, a carbon fiber, a composite material, or the like may be used depending on the elements in the manufacturing.

以下、本発明の実施例2による立体網状構造体215の製造方法については実施例1と同様であるので、噴出口20、ノズル21を削除し、ガイド230を設けたものであり、基本的なものは同様であるので、説明は援用する。   Hereinafter, since the manufacturing method of the three-dimensional network structure 215 according to the second embodiment of the present invention is the same as that of the first embodiment, the nozzle 20 and the nozzle 21 are omitted, and a guide 230 is provided. Since the thing is the same, description is used.

本発明の実施例2による効果について説明する。本実施例ではガイド230を備えることにより、コンベヤ240a,240bにおける板材242の撓みを規制し、精度の良好な立体網状構造体215を安定的に製造することができる。   The effect by Example 2 of this invention is demonstrated. In this embodiment, by providing the guide 230, it is possible to regulate the bending of the plate material 242 in the conveyors 240a and 240b and stably manufacture the three-dimensional network structure 215 with good accuracy.

また、ガイド230を備えることにより、様々な形状や大きさの立体網状構造体215を製造する際にも板材242の歪みを防止することができる。例えば、ダブルベッドサイズのマットレス等の幅広な立体網状構造体215を製造する際には、板材242の横方向の延設長さが大きくなり、引取中の集合体211の反発力によって板材242に加わる曲げ応力も大きくなるが、適宜の間隔でガイド230を備えることにより、板材242に必要な曲げ剛性を保ち、板材242の撓みを防止することができる。また、例えば、口金270による長四辺形の断面形状の立体網状構造体215を製造するラインにおいて、製造する立体網状構造体215の形状を異形状のようなものに変更した場合においては、集合体211からの反発力が板材242の延設方向の中央付近に集中し、板材242に加わる曲げ応力が大きくなるが、そのような場合であってもガイド230によって板材242の撓みを防止することができる。   Further, by providing the guide 230, it is possible to prevent distortion of the plate material 242 when manufacturing the three-dimensional network structure 215 having various shapes and sizes. For example, when a wide three-dimensional network structure 215 such as a double bed size mattress is manufactured, the laterally extending length of the plate member 242 becomes large, and the repulsive force of the assembly 211 during taking-up causes the plate member 242 to be retreated. Although the bending stress to be applied also increases, by providing the guides 230 at appropriate intervals, the bending rigidity required for the plate material 242 can be maintained and the bending of the plate material 242 can be prevented. In addition, for example, in the line for manufacturing the three-dimensional network structure 215 having a long quadrangular cross-sectional shape by the base 270, when the shape of the three-dimensional network structure 215 to be manufactured is changed to an irregular shape, the assembly The repulsive force from 211 concentrates in the vicinity of the center in the extending direction of the plate member 242 and the bending stress applied to the plate member 242 increases. Even in such a case, the guide 230 can prevent the plate member 242 from being bent. it can.

ガイド230を備えることによりコンベヤ240a,240b全体の剛性が向上する上、間隔調節機構(図示略)を備えることによりコンベヤ240a,240bの対向間隔C1を調整できるため、製造する立体網状構造体215の形状や大きさに合わせて最適な引取領域Uの間隔を設定し、これを保つことが可能となる。   By providing the guide 230, the rigidity of the conveyors 240a and 240b as a whole is improved, and by providing the interval adjusting mechanism (not shown), the opposing interval C1 of the conveyors 240a and 240b can be adjusted. It is possible to set an optimum interval of the take-up region U in accordance with the shape and size, and keep this.

上記の通り、ガイド230を備えることにより、様々な立体網状構造体215を精度よく製造することができ、製造装置201の汎用性が向上する。また、板材242の撓みを防止するため、無端チェーン243の適切な張力の設定範囲が広くなり、張力の設定が容易となる。さらに、コンベヤ240a,240bの全体的な剛性が向上することにより、コンベヤ240a,240b全体の形状を保持するための無端チェーン243の張力の負担を減らすことができ、製造装置201の長寿命化が図られ、総合的にコストダウンされる。   As described above, by providing the guide 230, various three-dimensional network structures 215 can be accurately manufactured, and the versatility of the manufacturing apparatus 201 is improved. Further, in order to prevent the plate member 242 from being bent, an appropriate tension setting range of the endless chain 243 is widened, and the tension can be easily set. Furthermore, by improving the overall rigidity of the conveyors 240a and 240b, the burden on the tension of the endless chain 243 for maintaining the shape of the entire conveyors 240a and 240b can be reduced, and the life of the manufacturing apparatus 201 can be extended. The cost is reduced overall.

なお、円形ガイド(図示略)を備えることにより、コンベヤ240a,240bの上部および下部における板材242の撓みを防止できる。上述の通り、集合体211を引き取るために一対のコンベヤ240a,240bの対向間隔C1はシュート280a,280bの下端部の間隔S1よりも狭く設けられ、また、上述の立体網状構造体215の製造方法のように、集合体211には水面291付近で立体網状構造が形成されるため、コンベヤ240a,240bの対向間隔C1が狭まるにつれて、コンベヤ240a,240bには集合体211を圧縮するための反発力が加わるところ、コンベヤ240a,240bの上部には円形ガイド(図示略)が設けられているので、集合体211を圧縮するために必要な板材242の曲げ剛性を保つことができる。また、コンベヤ240a,240bの下部にも円形ガイド(図示略)が設けられるため、コンベヤ240a,240bの上下の剛性をバランスよく保つことができ、そのようなコンベヤ240a,240bの上部にかかる力によってコンベヤ240a,240bが全体的に歪むことはない。   In addition, by providing a circular guide (not shown), it is possible to prevent the plate material 242 from being bent at the upper and lower portions of the conveyors 240a and 240b. As described above, the distance C1 between the pair of conveyors 240a and 240b is set to be narrower than the distance S1 between the lower ends of the chutes 280a and 280b in order to take up the aggregate 211, and the manufacturing method of the above-described three-dimensional network structure 215 As described above, since the three-dimensional network structure is formed in the vicinity of the water surface 291 in the aggregate 211, the repulsive force for compressing the aggregate 211 on the conveyors 240a and 240b as the facing distance C1 between the conveyors 240a and 240b decreases. However, since circular guides (not shown) are provided on the upper portions of the conveyors 240a and 240b, the bending rigidity of the plate material 242 necessary for compressing the aggregate 211 can be maintained. In addition, since circular guides (not shown) are also provided at the lower parts of the conveyors 240a and 240b, the upper and lower rigidity of the conveyors 240a and 240b can be maintained in a well-balanced manner, and the force applied to the upper parts of the conveyors 240a and 240b can be maintained. The conveyors 240a and 240b are not distorted as a whole.

本発明の実施例3による立体網状構造体315の製造装置301(以下、単に製造装置301という。)について図10〜図11を参照して以下に説明する。製造装置301は、おおむね実施例1、2と同様であるので、説明は援用するが、実施例1の噴出口20、ノズル21に対応する噴出口320、ノズル321、実施例2のガイド230に対応するガイド330を共に備えていることが相違する。なお、図10、図11においては、噴出口320、ノズル321、ガイド330は、それぞれ、左右一対を備えているが、図面では便宜上、一個のみ表示し、他は省略している。   A manufacturing apparatus 301 (hereinafter, simply referred to as a manufacturing apparatus 301) for a three-dimensional network structure 315 according to a third embodiment of the present invention will be described below with reference to FIGS. Since the manufacturing apparatus 301 is almost the same as in the first and second embodiments, the description is incorporated, but the jet outlet 320 in the first embodiment, the jet outlet 320 corresponding to the nozzle 21, the nozzle 321, and the guide 230 in the second embodiment. The difference is that the corresponding guides 330 are provided together. 10 and 11, each of the jet outlet 320, the nozzle 321, and the guide 330 includes a pair of left and right, but in the drawings, only one is shown for convenience and the others are omitted.

本発明の実施例3による効果について説明する。実施例3では噴出口320、ノズル321、ガイド330を共に備えているので、実施例1と2の効果を共に備えることで、相乗的な効果が得られる。なお、変形例として、噴出口320を吸入孔に変えてもよい。   The effect by Example 3 of this invention is demonstrated. In the third embodiment, since the ejection port 320, the nozzle 321 and the guide 330 are all provided, a synergistic effect can be obtained by providing both the effects of the first and second embodiments. As a modification, the ejection port 320 may be changed to a suction hole.

なお、本発明は、上述の実施の形態に限定されるものではなく、本発明の技術的思想を逸脱しない範囲において、改変等を加えることが出来るものであり、それらの改変、均等物等も本発明の技術的範囲に含まれることとなる。   Note that the present invention is not limited to the above-described embodiment, and modifications and the like can be made without departing from the technical idea of the present invention. It will be included in the technical scope of the present invention.

1、201、301・・・立体網状構造体の製造装置
10、210、310・・・線条
11、211、311・・・集合体
15、215、315・・・立体網状構造体
20、320・・・噴出孔
230、330・・・ガイド
40a,40b、240a,240b、340a,340b・・・コンベヤ
41、241、341・・・無端部材
42、242、342・・・板材
R・・・間隙
1, 201, 301... Three-dimensional network structure manufacturing apparatus 10, 210, 310... Lines 11, 211, 311... Aggregates 15, 215, 315. ... Eject holes 230, 330 ... Guides 40a, 40b, 240a, 240b, 340a, 340b ... Conveyors 41, 241, 341 ... Endless members 42, 242, 342 ... Plate material R ... gap

Claims (15)

溶融した熱可塑性樹脂を線条として下方に押し出して降下させる複数の押出孔を有する口金と、
前記線条の集合体を冷却する水槽と、
前記押出孔の下方で一対が対向して設けられ、周設される無端部材が間隙を有するコンベヤと、
該コンベヤの内部領域に設けられ、前記間隙から前記集合体に向かって冷却水を噴出する噴出孔または前記集合体付近から前記間隙を通して水を吸引する吸引孔の少なくとも一方を含む強制対流部材と、を備え、
前記線条の降下速度より遅い速度で前記集合体を前記コンベヤにより引き取り、前記水槽で冷却することにより、前記集合体を立体網状構造体となす立体網状構造体製造装置。
A die having a plurality of extrusion holes for extruding and lowering the molten thermoplastic resin as a filament;
A water tank for cooling the assembly of the filaments;
A conveyer having a pair of opposed endless members provided below the extrusion hole and a circumferentially provided endless member having a gap;
A forced convection member provided in an inner region of the conveyor and including at least one of an ejection hole for ejecting cooling water from the gap toward the assembly or a suction hole for sucking water through the gap from the vicinity of the assembly; With
The three-dimensional network-structure manufacturing apparatus which makes the said aggregate | assembly into a three-dimensional network structure by taking up the said aggregate | assembly by the said conveyor at a speed slower than the descent | fall speed | rate of the said filament, and cooling with the said water tank.
溶融した熱可塑性樹脂を線条として下方に押し出して降下させる複数の押出孔を有する口金と、
前記線条の集合体を冷却する水槽と、
前記押出孔の下方で一対が対向して設けられ、周設される無端部材が間隙を有するコンベヤと、
該コンベヤの内部領域に設けられ、前記無端部材の撓みを規制するガイドと、を備え、
前記線条の降下速度より遅い速度で前記集合体を前記コンベヤにより引き取り、前記水槽で冷却することにより、前記集合体を立体網状構造体となす立体網状構造体製造装置。
A die having a plurality of extrusion holes for extruding and lowering the molten thermoplastic resin as a filament;
A water tank for cooling the assembly of the filaments;
A conveyer having a pair of opposed endless members provided below the extrusion hole and a circumferentially provided endless member having a gap;
A guide that is provided in an inner region of the conveyor and regulates the bending of the endless member,
The three-dimensional network-structure manufacturing apparatus which makes the said aggregate | assembly into a three-dimensional network structure by taking up the said aggregate | assembly by the said conveyor at a speed slower than the descent | fall speed | rate of the said filament, and cooling with the said water tank.
溶融した熱可塑性樹脂を線条として下方に押し出して降下させる複数の押出孔を有する口金と、
前記線条の集合体を冷却する水槽と、
前記押出孔の下方で一対が対向して設けられ、周設される無端部材が間隙を有するコンベヤと、
該コンベヤの内部領域に設けられ、前記間隙から前記集合体に向かって冷却水を噴出する噴出孔または前記集合体付近から間隙を通して水を吸引する吸引孔の少なくとも一方を含む強制対流部材と、
前記内部領域に設けられ、前記無端部材の撓みを規制するガイドと、を備え、
前記線条の降下速度より遅い速度で前記集合体を前記コンベヤにより引き取り、前記水槽で冷却することにより、前記集合体を立体網状構造体となす立体網状構造体製造装置。
A die having a plurality of extrusion holes for extruding and lowering the molten thermoplastic resin as a filament;
A water tank for cooling the assembly of the filaments;
A conveyer having a pair of opposed endless members provided below the extrusion hole and a circumferentially provided endless member having a gap;
A forced convection member provided in an inner region of the conveyor and including at least one of an ejection hole for ejecting cooling water from the gap toward the assembly or a suction hole for sucking water through the gap from the vicinity of the assembly;
A guide that is provided in the inner region and restricts the bending of the endless member,
The three-dimensional network-structure manufacturing apparatus which makes the said aggregate | assembly into a three-dimensional network structure by taking up the said aggregate | assembly by the said conveyor at a speed slower than the descent | fall speed | rate of the said filament, and cooling with the said water tank.
前記ガイドが、前記無端部材を駆動する回動体と同軸に設けられ、前記無端部材の撓みを規制する円形ガイドである請求項2または3の立体網状構造体製造装置。   The three-dimensional network structure manufacturing apparatus according to claim 2 or 3, wherein the guide is a circular guide that is provided coaxially with a rotating body that drives the endless member and restricts bending of the endless member. 前記ガイドが、前記内部領域のうち前記集合体に接する側において、前記無端部材の直線部と平行な縦方向に延設される中間ガイドである請求項2または3の立体網状構造体製造装置。   4. The three-dimensional network structure manufacturing apparatus according to claim 2, wherein the guide is an intermediate guide that extends in a longitudinal direction parallel to the straight portion of the endless member on a side in contact with the assembly in the inner region. 溶融した熱可塑性樹脂を複数の線条として下方に押し出して降下させる押出ステップと、
前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着するループ形成ステップと、
前記コンベヤにより前記集合体を挟持して前記線条の降下速度より遅い速度で水中に引き取る引取ステップと、
前記コンベヤに周設される無端部材が間隙を有し、一対の前記コンベヤに挟まれる引取領域に向かって前記コンベヤの内部領域から該間隙を通して冷却水を噴出するか、または前記引取領域から前記コンベアの内部領域へ該間隙を通して水を吸引することにより、水の強制対流を起こし、前記引取ステップと並行して前記集合体を水中で冷却する冷却ステップと、
を備えたことを特徴とする立体網状構造体の製造方法。
An extrusion step of extruding and lowering the molten thermoplastic resin downward as a plurality of filaments;
The filaments contact the water surface, or contact a pair of guide members facing each other across the descending assembly of the filaments or a conveyor facing below the guide members, and the filaments are entangled irregularly. Loop formation step in which the entangled portion is heat-welded,
A take-off step of sandwiching the assembly by the conveyor and taking it into the water at a speed slower than the descending speed of the filament;
The endless member provided around the conveyor has a gap, and the cooling water is ejected from the inner area of the conveyor toward the take-up area sandwiched between the pair of conveyors through the gap, or from the take-up area to the conveyor. A cooling step in which forced convection of the water is caused by sucking water through the gap into the inner region of the chamber and the assembly is cooled in water in parallel with the take-up step;
A method for producing a three-dimensional network structure comprising:
溶融した熱可塑性樹脂を複数の線条として下方に押し出して降下させる押出ステップと、
前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着するループ形成ステップと、
前記コンベヤに周設される無端部材の内部領域に撓みを規制するガイドを備え、該コンベヤにより前記集合体を挟持して前記線条の降下速度より遅い速度で水中に引き取る引取ステップと、
前記引取ステップと並行して前記集合体を水中で冷却する冷却ステップと、
を備えたことを特徴とする立体網状構造体の製造方法。
An extrusion step of extruding and lowering the molten thermoplastic resin downward as a plurality of filaments;
The filaments contact the water surface, or contact a pair of guide members facing each other across the descending assembly of the filaments or a conveyor facing below the guide members, and the filaments are entangled irregularly. Loop formation step in which the entangled portion is heat-welded,
A take-off step comprising a guide for restricting bending in an inner region of an endless member provided around the conveyor, and holding the assembly by the conveyor and taking it into water at a speed slower than the descending speed of the filaments;
A cooling step for cooling the aggregate in water in parallel with the take-up step;
A method for producing a three-dimensional network structure comprising:
溶融した熱可塑性樹脂を複数の線条として下方に押し出して降下させる押出ステップと、
前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着するループ形成ステップと、
前記コンベヤに周設される無端部材の内部領域に撓みを規制するガイドを備え、該コンベヤにより前記集合体を挟持して前記線条の降下速度より遅い速度で水中に引き取る引取ステップと、
前記無端部材が間隙を有し、一対の前記コンベヤに挟まれる引取領域に向かって前記コンベヤの内部領域から該間隙を通して冷却水を噴出するか、または前記引取領域から前記コンベヤの内部領域へ該間隙を通して水を吸引することにより、水の強制対流を起こし、前記引取ステップと並行して前記集合体を水中で冷却する冷却ステップと、
を備えたことを特徴とする立体網状構造体の製造方法。
An extrusion step of extruding and lowering the molten thermoplastic resin downward as a plurality of filaments;
The filaments contact the water surface, or contact a pair of guide members facing each other across the descending assembly of the filaments or a conveyor facing below the guide members, and the filaments are entangled irregularly. Loop formation step in which the entangled portion is heat-welded,
A take-off step comprising a guide for restricting bending in an inner region of an endless member provided around the conveyor, and holding the assembly by the conveyor and taking it into water at a speed slower than the descending speed of the filaments;
The endless member has a gap, and the cooling water is ejected through the gap from the inner area of the conveyor toward the take-up area sandwiched between the pair of conveyors, or the gap from the take-up area to the inner area of the conveyor. A cooling step in which forced convection of the water is caused by sucking water through and the assembly is cooled in water in parallel with the take-up step;
A method for producing a three-dimensional network structure comprising:
前記ガイドが、前記無端部材を駆動する回動体と同軸に設けられ、前記無端部材の撓みを規制する円形ガイドである請求項7または8の立体網状構造体製造方法。   The method of manufacturing a three-dimensional network structure according to claim 7 or 8, wherein the guide is a circular guide that is provided coaxially with a rotating body that drives the endless member and restricts bending of the endless member. 前記ガイドが、前記内部領域のうち前記集合体に接する側において、前記無端部材の周回方向に延設される中間ガイドである請求項7または8の立体網状構造体製造方法。   The method of manufacturing a three-dimensional network structure according to claim 7 or 8, wherein the guide is an intermediate guide that extends in a circumferential direction of the endless member on a side of the inner region that contacts the assembly. 溶融した熱可塑性樹脂が複数の線条として下方に押し出され、
前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着してループが形成され、
前記コンベヤにより前記集合体が挟持され前記線条の降下速度より遅い速度で水中に引き取られ、
前記コンベヤに周設される無端部材が間隙を有し、一対の前記コンベヤに挟まれる引取領域に向かって前記コンベヤの内部領域から該間隙を通して冷却水が噴出されるか、または前記引取領域から前記コンベヤの内部領域へ該間隙を通して水が吸引されることにより、水の強制対流がおこり、水中で冷却されてなる立体網状構造体。
The molten thermoplastic resin is extruded downward as a plurality of filaments,
The filaments contact the water surface, or contact a pair of guide members facing each other across the descending assembly of the filaments or a conveyor facing below the guide members, and the filaments are entangled irregularly. The entangled part is heat welded to form a loop,
The assembly is sandwiched by the conveyor and taken up in water at a speed slower than the descending speed of the filament,
An endless member provided around the conveyor has a gap, and cooling water is ejected from the inner area of the conveyor toward the take-up area sandwiched between the pair of conveyors through the gap or from the take-up area. A three-dimensional network structure in which forced convection of water occurs when water is sucked through the gap into the inner region of the conveyor and is cooled in water.
溶融した熱可塑性樹脂が複数の線条として下方に押し出され、
前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着してループが形成され、
前記コンベヤに周設される無端部材の内部領域に撓みを規制するガイドを備えた前記コンベヤにより前記集合体が挟持され前記線条の降下速度より遅い速度で水中に引き取られ冷却されてなる立体網状構造体。
The molten thermoplastic resin is extruded downward as a plurality of filaments,
The filaments contact the water surface, or contact a pair of guide members facing each other across the descending assembly of the filaments or a conveyor facing below the guide members, and the filaments are entangled irregularly. The entangled part is heat welded to form a loop,
A three-dimensional net-like structure in which the assembly is sandwiched by the conveyor provided with a guide for restricting bending in an inner region of an endless member provided around the conveyor, and is drawn into water and cooled at a speed lower than the descending speed of the filament. Structure.
溶融した熱可塑性樹脂が複数の線条として下方に押し出され、
前記線条が水面に接触し、または、降下する前記線条の集合体を挟んで対向する一対の案内部材もしくは該案内部材の下方で対向するコンベヤに接触し、前記線条が不規則に絡まり合い、その絡合部が熱溶着してループが形成され、
前記コンベヤに周設される無端部材の内部領域に撓みを規制するガイドを備えた前記コンベヤにより前記集合体が挟持され前記線条の降下速度より遅い速度で水中に引き取られ、
前記コンベヤに周設される無端部材が間隙を有し、一対の前記コンベヤに挟まれる引取領域に向かって前記コンベヤの内部領域から該間隙を通して冷却水が噴出されるか、または前記引取領域から前記コンベヤの内部領域へ該間隙を通して水が吸引されることにより、水の強制対流が起こり、水中で冷却されてなる立体網状構造体。
The molten thermoplastic resin is extruded downward as a plurality of filaments,
The filaments contact the water surface, or contact a pair of guide members facing each other across the descending assembly of the filaments or a conveyor facing below the guide members, and the filaments are entangled irregularly. The entangled part is heat welded to form a loop,
The assembly is sandwiched by the conveyor provided with a guide that regulates bending in an inner region of an endless member that is provided around the conveyor, and is taken up in water at a speed slower than the descending speed of the filament,
An endless member provided around the conveyor has a gap, and cooling water is ejected from the inner area of the conveyor toward the take-up area sandwiched between the pair of conveyors through the gap or from the take-up area. A three-dimensional network structure in which forced convection of water is caused by water being sucked through the gap to the inner region of the conveyor and is cooled in water.
前記ガイドが、前記無端部材を駆動する回動体と同軸に設けられ、前記無端部材の撓みを規制する円形ガイドである請求項12または13の立体網状構造体。   The three-dimensional network structure according to claim 12 or 13, wherein the guide is a circular guide that is provided coaxially with a rotating body that drives the endless member and restricts bending of the endless member. 前記ガイドが、前記内部領域のうち前記集合体に接する側において、前記無端部材の周回方向に延設される中間ガイドである請求項12または13の立体網状構造体。   The three-dimensional network structure according to claim 12 or 13, wherein the guide is an intermediate guide that extends in a circumferential direction of the endless member on a side of the inner region that contacts the assembly.
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