JP4917987B2 - Tire metal wire recovery device - Google Patents

Tire metal wire recovery device Download PDF

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Publication number
JP4917987B2
JP4917987B2 JP2007203190A JP2007203190A JP4917987B2 JP 4917987 B2 JP4917987 B2 JP 4917987B2 JP 2007203190 A JP2007203190 A JP 2007203190A JP 2007203190 A JP2007203190 A JP 2007203190A JP 4917987 B2 JP4917987 B2 JP 4917987B2
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metal wire
crusher
tire
compression
crushing
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JP2009034643A (en
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滋 辰巳
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Kurimoto Ltd
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Kurimoto Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0217—Mechanical separating techniques; devices therefor
    • B29B2017/0224—Screens, sieves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0268—Separation of metals
    • B29B2017/0272—Magnetic separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/08—Transition metals
    • B29K2705/12—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Disintegrating Or Milling (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Processing Of Solid Wastes (AREA)

Description

この発明は、補強材として金属ワイヤを使用しているタイヤから金属ワイヤを分別回収する、タイヤの金属ワイヤ回収装置に関する。   The present invention relates to a tire metal wire recovery device that separates and recovers metal wires from tires that use metal wires as reinforcing materials.

自動車等の輸送機器に一般的に用いられるタイヤは主として中空構造のゴム材から構成される。この中空構造の内面に金属ワイヤを編んでベルト状にしたブレーカーコードを設けて、トレッド面（接地面）への異物の突き刺さりによるパンクを防止している。さらに、ピアノ線等の金属ワイヤからなるビードワイヤをリム接触部近傍に円周状に埋め込んでタイヤを補強する（ドーナツ形状を保つ）ようにしている。   Tires generally used in transportation equipment such as automobiles are mainly composed of a rubber material having a hollow structure. A breaker cord in which a metal wire is knitted into a belt shape is provided on the inner surface of the hollow structure to prevent puncture caused by foreign matter sticking to the tread surface (grounding surface). Further, a bead wire made of a metal wire such as a piano wire is circumferentially embedded in the vicinity of the rim contact portion to reinforce the tire (maintain a donut shape).

このタイヤは、その使用距離とともにトレッド面の磨耗が進行し、その磨耗が使用限界に達すると使用できなくなる。この使用限界に達したタイヤの多くはリサイクルされて再利用される。
このリサイクルにおいて、タイヤを構成するゴム材と金属ワイヤは分別回収されて、それぞれ再利用先に運搬される。例えば、上記ゴム材は燃焼の際の発熱量が大きいことから、セメント工場等で燃料として用いられたり、アスファルトに混入して、高速道路等の排水性向上や騒音発生防止等に用いられたりする一方で、上記金属ワイヤはスクラップとして鉄鋼原料に用いられる。 In this tire, wear of the tread surface progresses with the use distance, and the tire cannot be used when the wear reaches a use limit. Many tires that have reached this limit are recycled and reused.
In this recycling, the rubber material and the metal wire constituting the tire are separately collected and transported to the reuse destination. For example, the rubber material generates a large amount of heat during combustion, so it is used as a fuel in cement factories, etc., or mixed with asphalt to improve drainage on highways and prevent noise generation. On the other hand, the metal wire is used as a raw material for steel as scrap.

上記リサイクルの工程で分別回収された金属ワイヤは、多くの切断片がそのまま積み重なった状態となっており、その重量の割に嵩張りやすい。そのため、トラック等での運搬において多くの重量を一度に運べず、運搬効率が悪いという問題がある。   The metal wires separated and collected in the recycling process are in a state in which many cut pieces are stacked as they are, and are easily bulky for their weight. Therefore, there is a problem that a large amount of weight cannot be carried at a time in transportation on a truck or the like, and transportation efficiency is poor.

そこで、この発明は、補強材として金属ワイヤを使用しているタイヤのリサイクルにおいて、このタイヤから分別回収された金属ワイヤの嵩を低減することを課題とする。   Then, this invention makes it a subject to reduce the volume of the metal wire separated and collected from this tire in the recycling of the tire which uses the metal wire as a reinforcing material.

上記の課題を解決するため、この発明は、タイヤの破砕片から分別して集めた金属ワイヤを圧縮減容して回収するようにしたのである。
この金属ワイヤを圧縮減容することで、この金属ワイヤの運搬を効率的に行い得る。 In order to solve the above-described problems, the present invention is configured to compress and recover the metal wires collected separately from the crushed pieces of the tire.
The metal wire can be efficiently transported by compressing and reducing the volume of the metal wire.

この発明は、補強材として金属ワイヤを使用しているタイヤから金属ワイヤを分別回収する回収装置を、上記タイヤを破砕する破砕機と、この破砕機で破砕した破砕片をゴム材と上記金属ワイヤに分別する分別機と、この分別機で分別された上記ワイヤを圧縮減容する圧縮機とから構成する。
上記破砕機によるタイヤの破砕の際に、このタイヤ片に強い外力（剪断力）が加わるため、その外力によって、タイヤの中空内面に設けられていたブレーカーコードや、タイヤに埋め込まれていたビードワイヤがゴム材から強制的に剥離し、ゴム材と金属ワイヤ（ブレーカーコード及びビードワイヤ）がばらばらになって混在した状態の破砕物が得られる。
この破砕物は上記分別機によってゴム材と金属ワイヤとに分別される。この分別の手法として、例えば、その比重の差を利用する方法、破砕片の大きさの差を利用する方法、磁力による方法等、種々の公知方法を採用し得る。
また、上記金属ワイヤを圧縮減容するための圧縮機としては、例えば、油圧等を利用した公知の二方締又は三方締プレス機が幅広く適用できる。 The present invention provides a recovery device that separates and collects metal wires from tires that use metal wires as a reinforcing material, a crusher that crushes the tires, and a rubber material and the metal wires that are crushed by the crusher. And a compressor for compressing and reducing the wires separated by the separator.
When the tire is crushed by the crusher, a strong external force (shearing force) is applied to the tire piece, so that the breaker cord provided on the hollow inner surface of the tire or the bead wire embedded in the tire is caused by the external force. The material is forcibly separated from the rubber material, and a crushed material in a state where the rubber material and the metal wire (breaker cord and bead wire) are separated and mixed is obtained.
The crushed material is separated into a rubber material and a metal wire by the sorting machine. As this sorting method, for example, various known methods such as a method using a difference in specific gravity, a method using a difference in size of crushed pieces, and a method using magnetic force can be adopted.
Moreover, as a compressor for compressing and reducing the volume of the metal wire, for example, a known two-way fastening or three-way fastening press using hydraulic pressure can be widely applied.

この圧縮機をスクリューコンベア部と圧縮部とから構成し、このスクリューコンベア部に投入した上記金属ワイヤを上記圧縮部に搬送する際に、上記スクリューコンベア部の回転によってこの金属ワイヤ同士の絡まり度合いが高まるようにすることもできる。
この金属ワイヤ同士の絡まりの度合いが低い場合は、この金属ワイヤに外力を負荷して一旦圧縮減容しても、この負荷を解除すると、金属ワイヤがその弾性力によって元の形状に戻ろうとするため、高い圧縮度を得ることができない。
これに対して、このスクリューコンベア部で搬送される際に、この金属ワイヤ同士がスクリューコンベア部の回転とともに回転して絡まり合うようにし、この絡まり合った状態のままで外力を負荷して圧縮減容すると、この負荷を解除しても、金属ワイヤがその弾性力によって元の形状に戻ろうとするのを絡まり合った金属ワイヤが互いに拘束する。このため、高い圧縮度を維持したままの状態の金属ワイヤ圧縮体を得ることができる。 When this compressor is composed of a screw conveyor unit and a compression unit, and the metal wire put into the screw conveyor unit is conveyed to the compression unit, the degree of entanglement between the metal wires is caused by the rotation of the screw conveyor unit. It can also be increased.
When the degree of entanglement between the metal wires is low, even if an external force is applied to the metal wires and the compression is reduced once, the metal wires attempt to return to the original shape by the elastic force when the load is released. Therefore, a high degree of compression cannot be obtained.
On the other hand, when the metal wire is conveyed by the screw conveyor unit, the metal wires are rotated and entangled with the rotation of the screw conveyor unit, and the compression force is reduced by applying an external force in the entangled state. In other words, even if this load is released, the metal wires entangled with each other to be restored to the original shape by the elastic force are restrained to each other. For this reason, the metal wire compression body of the state which maintained the high compression degree can be obtained.

上記破砕機を、破砕後の破砕片の大きさが次第に小さくなる多段の破砕機で構成し、上記タイヤをこの破砕機で順次破砕するようにするとともに、各破砕機の間に篩を設け、ふるい落とされた破砕片を次段の破砕機に投入する一方で、篩に残留した破砕片を現段の破砕機に再投入するようにすることもできる。
このように破砕機を多段に設けることにより、破砕機の破砕刃にかかる負担を軽減し得るとともに、破砕片の大きさを小さくすることができるため、リサイクルにおいて取り扱いがしやすくなる。また、多段の破砕機を通過することによって、上記ゴム材からの金属ワイヤの剥離が一層確実になされるので、この金属ワイヤを容易に回収することができる。 The crusher is composed of a multistage crusher in which the size of the crushing pieces after crushing is gradually reduced, and the tire is sequentially crushed with this crusher, and a sieve is provided between each crusher, It is also possible to throw the crushed pieces that have been sieved out into the next-stage crusher, while re-feeding the crushed pieces remaining on the sieve into the current-stage crusher.
By providing the crushers in multiple stages as described above, the burden on the crushing blades of the crusher can be reduced, and the size of the crush pieces can be reduced, so that handling in recycling becomes easy. Moreover, since the metal wire is more reliably separated from the rubber material by passing through a multistage crusher, the metal wire can be easily recovered.

さらに、上記破砕によって混在した上記ゴム材と金属ワイヤの分別回収に際し、上記破砕機又は上記分別機の少なくとも一方に磁石を設け、この磁石で上記金属ワイヤのみを分別するようにすることもできる。
この分別において上記磁石に金属ワイヤのみが吸着するので、両者の分別回収作業を容易かつ確実に行い得る。 Furthermore, at the time of separating and collecting the rubber material and the metal wire mixed by the crushing, a magnet may be provided in at least one of the crushing machine or the sorting machine, and only the metal wire may be separated by the magnet.
In this separation, only the metal wire is attracted to the magnet, so that the separation and collection of both can be easily and reliably performed.

この発明によると、補強材として金属ワイヤを使用するタイヤのリサイクルにおいて、このタイヤから分別回収された金属ワイヤの嵩を低減することができるため、上記リサイクルの工程においてこの金属ワイヤを容易に取り扱うことができる。   According to the present invention, in the recycling of a tire using a metal wire as a reinforcing material, the volume of the metal wire separated and collected from the tire can be reduced, so that the metal wire can be easily handled in the recycling process. Can do.

この発明に係るタイヤの金属ワイヤ回収装置の全体図を図１に示す。   An overall view of a tire metal wire recovery device according to the present invention is shown in FIG.

このタイヤの金属ワイヤ回収装置は一次破砕機１と、回転篩２と、二次破砕機３と、分別機４と、圧縮機５と、ベルトコンベア６と、ゴム材回収容器７と、金属ワイヤ回収容器８とから構成されている。
上記二次破砕機３と分別機４には、磁力選別機（図示せず）が内蔵され、この磁力選別機の発する磁力によって金属ワイヤとゴム材を分別して回収する。 The tire metal wire recovery device includes a primary crusher 1, a rotary sieve 2, a secondary crusher 3, a separator 4, a compressor 5, a belt conveyor 6, a rubber material recovery container 7, and a metal wire. And a collection container 8.
The secondary crusher 3 and the sorter 4 include a magnetic separator (not shown), and the metal wire and the rubber material are separated and collected by the magnetic force generated by the magnetic separator.

まず、補強材として金属ワイヤ９を使用しているタイヤ１０を一次破砕機１に投入し、この一次破砕機１に内蔵されている図示しない破砕刃によってこのタイヤ１０を破砕する。この破砕によって得られる破砕片１１の大きさは約１００ｍｍである。この破砕片１１は、ベルトコンベア６ａで回転篩２に搬送される。   First, a tire 10 using a metal wire 9 as a reinforcing material is put into the primary crusher 1, and the tire 10 is crushed by a crushing blade (not shown) built in the primary crusher 1. The size of the crushed pieces 11 obtained by this crushing is about 100 mm. The crushed pieces 11 are conveyed to the rotary sieve 2 by the belt conveyor 6a.

この回転篩２では、約１００ｍｍ以下の破砕片１１をふるい落とし、ふるい落とされた破砕片１１はベルトコンベア６ｂで二次破砕機３に搬送される一方で、約１００ｍｍを超える大きさの破砕片１１はベルトコンベア６ｃで再び一次破砕機１に搬送されて、回転篩２でふるい落とされる大きさ（約１００ｍｍ以下）に破砕される。   In the rotary sieve 2, the crushed pieces 11 of about 100 mm or less are screened out, and the crushed pieces 11 are transferred to the secondary crusher 3 by the belt conveyor 6b, while the crushed pieces 11 having a size exceeding about 100 mm. Is conveyed again to the primary crusher 1 by the belt conveyor 6c, and is crushed to a size (about 100 mm or less) that is sieved by the rotary sieve 2.

二次破砕機３に送られた破砕片１１は、図示しない破砕刃によってさらに約５ｍｍの大きさに破砕される。この破砕片１１にはゴム材１２と、このゴム材１２から剥離した金属ワイヤ９が混在している。まず、上記磁力選別機でこの破砕片１１の中からゴム材１２を分別して、これをゴム材回収容器７に回収する。   The crushed pieces 11 sent to the secondary crusher 3 are further crushed to a size of about 5 mm by a crushing blade (not shown). In this crushed piece 11, a rubber material 12 and a metal wire 9 peeled from the rubber material 12 are mixed. First, the rubber material 12 is separated from the crushed pieces 11 by the magnetic separator and collected in the rubber material collection container 7.

上記のようにゴム材１２を分離した破砕片１１には、金属ワイヤ９とともに、分別しきれなかったゴム材１２がまだ残留している。この破砕片１１はベルトコンベア６ｄで分別機４に搬送され、この分別機４に設けられた上記磁力選別機によって、金属ワイヤ９のみを吸着して回収する。残りのゴム材１２は、ベルトコンベア６ｅでゴム材回収容器７に回収する。これにより、上記破砕片１１をゴム材１２と金属ワイヤ９とに確実に分別し得る。   In the crushed piece 11 from which the rubber material 12 is separated as described above, the rubber material 12 that cannot be separated still remains together with the metal wire 9. The crushed pieces 11 are conveyed to the sorter 4 by the belt conveyor 6d, and only the metal wires 9 are adsorbed and collected by the magnetic separator provided in the sorter 4. The remaining rubber material 12 is collected in the rubber material collection container 7 by the belt conveyor 6e. Thereby, the crushed pieces 11 can be reliably separated into the rubber material 12 and the metal wire 9.

この分別機４で分離された金属ワイヤ９は、ベルトコンベア６ｆで圧縮機５に搬送され、この圧縮機５で圧縮減容される。
この圧縮機５を図２に示して説明する。この圧縮機５はスクリューコンベア部１３と圧縮部１４とから構成されている。
まず、分別機４から搬送された金属ワイヤ９をこのスクリューコンベア部１３の投入口１５に投入する。このスクリューコンベア部１３のスクリューフィーダー１６をこの回転軸周りに回転すると、スクリューフィーダー１６の翼部１６ａが見かけ上、圧縮部１４の方に移動し、これとともに金属ワイヤ９も圧縮部１４まで搬送される。
この搬送の際、回転するスクリューフィーダー１６によってこの金属ワイヤ９にも上記回転軸周りの回転力が作用し、この回転力によって金属ワイヤ９に変形（折れ曲がり等）が生じる。この変形によって、隣接する金属ワイヤ９同士が絡まり合う。 The metal wire 9 separated by the separator 4 is conveyed to the compressor 5 by the belt conveyor 6f, and is compressed and reduced by the compressor 5.
The compressor 5 will be described with reference to FIG. The compressor 5 includes a screw conveyor unit 13 and a compression unit 14.
First, the metal wire 9 conveyed from the sorter 4 is loaded into the loading port 15 of the screw conveyor unit 13. When the screw feeder 16 of the screw conveyor unit 13 is rotated around the rotation axis, the wings 16a of the screw feeder 16 apparently move toward the compression unit 14, and the metal wire 9 is also conveyed to the compression unit 14 along with this. The
During this conveyance, a rotating force around the rotation axis acts on the metal wire 9 by the rotating screw feeder 16, and the metal wire 9 is deformed (bent or the like) by the rotating force. Due to this deformation, adjacent metal wires 9 are entangled with each other.

このように絡まり合った状態の金属ワイヤ９は、圧縮部１４において、スクリューフィーダー１６の回転に伴う押し出し力とともに側壁１７からの圧縮力を受けて圧縮され金属ワイヤ圧縮体１８となり、排出口１９から押し出され、金属ワイヤ回収容器８に回収される。
この側壁１７からの圧縮力は、例えば、同図に示すように、排出口１９に向かってこの側壁１７の内径を徐々に縮径する形状とし、この側壁１７の内側を通過する金属ワイヤ９がこの側壁１７の径方向に次第に押し縮められることによって発生する。 The metal wire 9 in an entangled state in this way is compressed by receiving a compression force from the side wall 17 together with the pushing force accompanying the rotation of the screw feeder 16 in the compression unit 14 to become a metal wire compression body 18, and from the discharge port 19. Extruded and collected in the metal wire collection container 8.
For example, as shown in the figure, the compression force from the side wall 17 is such that the inner diameter of the side wall 17 is gradually reduced toward the discharge port 19, and the metal wire 9 passing through the inside of the side wall 17 is This occurs when the side wall 17 is gradually compressed in the radial direction.

この側壁１７内を通過する間に、この内径の縮径の度合いに対応して金属ワイヤ９は圧縮されてその体積は減少する。しかもこの圧縮の際、金属ワイヤ９同士が複雑に絡まり合った状態のまま減容し、上記圧縮の負荷を解除しても、金属ワイヤ９がその弾性力によって元の形状に戻ろうとするのを絡まり合った金属ワイヤ９が互いに拘束する（図３参照）。このため高い圧縮度を維持したままの状態の金属ワイヤ圧縮体１８を得ることができる。   While passing through the side wall 17, the metal wire 9 is compressed and its volume is reduced in accordance with the degree of reduction of the inner diameter. In addition, during the compression, the volume of the metal wire 9 is reduced in a complicatedly entangled state, and even if the compression load is released, the metal wire 9 tends to return to its original shape due to its elastic force. The entangled metal wires 9 restrain each other (see FIG. 3). For this reason, the metal wire compression body 18 of the state with the high compression degree maintained can be obtained.

このように、金属ワイヤ９同士による拘束が生じるのは、ある金属ワイヤ９がスクリューフィーダー１６の回転に伴って屈曲変形し、この屈曲変形した部分に、他の金属ワイヤ９の端部が挿し込まれたまま屈曲変形し、屈曲した金属ワイヤ９同士が上記負荷を解除しても、互いの動き（弾性力によって元に戻ろうとする動き）を阻止し続けるためであると解される。   In this way, the restraint between the metal wires 9 occurs because one metal wire 9 is bent and deformed as the screw feeder 16 rotates, and the end of the other metal wire 9 is inserted into this bent and deformed portion. It is understood that this is because even if the bent metal wires 9 are bent and deformed while being released and the load is released, the mutual movement (the movement to return to the original state by the elastic force) continues to be prevented.

これに対して、図４に示すように、各金属ワイヤ９がほとんど屈曲していない状態でこれを積み重ね（同図（ａ）参照）、これを圧縮した場合においても、外力の負荷中はその体積は一旦減容する（同図（ｂ）参照）。しかしながら、上記のように金属ワイヤ９同士による拘束力が作用していないため、上記負荷を解除するとそれぞれの金属ワイヤ９の弾性力によって元の体積に戻ろうとする（同図（ｃ）参照）。その結果、金属ワイヤ圧縮体１８の圧縮度を高めることができない。   On the other hand, as shown in FIG. 4, the metal wires 9 are stacked in a state where the metal wires 9 are hardly bent (see FIG. 4A), and even when the metal wires 9 are compressed, the load is applied while an external force is applied. The volume is temporarily reduced (see (b) in the figure). However, since the binding force between the metal wires 9 does not act as described above, when the load is released, the original volume is returned to the original volume by the elastic force of each metal wire 9 (see FIG. 3C). As a result, the compression degree of the metal wire compression body 18 cannot be increased.

上記の金属ワイヤ９同士による拘束は、この金属ワイヤ９の長さが長いと、単位長さあたりの上記端部の数が少ないため生じにくい。このため、圧縮負荷を解除した際に高い圧縮度を得にくい。
これに対して、この金属ワイヤ９の長さが短いと、単位長さあたりの上記端部の数が多いため、金属ワイヤ９同士の拘束が生じやすい。このため、圧縮負荷を解除しても高い圧縮度が維持される。 When the length of the metal wires 9 is long, the restriction between the metal wires 9 is less likely to occur because the number of the end portions per unit length is small. For this reason, it is difficult to obtain a high degree of compression when the compression load is released.
On the other hand, when the length of the metal wire 9 is short, the number of the end portions per unit length is large, so that the metal wires 9 are easily restrained. For this reason, even if the compression load is released, a high degree of compression is maintained.

具体的には、金属ワイヤ９の長さ（平均長）を１０ｃｍ以下とすることによって金属ワイヤ９同士による拘束が期待できる。これにより、金属ワイヤ圧縮体１８を高い圧縮度のままの状態で維持することができ、この金属ワイヤ９の運搬効率を高めることができる。   Specifically, the restriction by the metal wires 9 can be expected by setting the length (average length) of the metal wires 9 to 10 cm or less. Thereby, the metal wire compression body 18 can be maintained in the state with a high compression degree, and the conveyance efficiency of this metal wire 9 can be improved.

この発明に係るタイヤの金属ワイヤ回収装置の装置構成を示す全体図Overall view showing the device configuration of a tire metal wire recovery device according to the present invention この発明に係る圧縮機の断面図Sectional view of the compressor according to the present invention 金属ワイヤを屈曲変形した状態で圧縮減容を行った場合における体積変化を示す側面図であって、（ａ）は圧縮前、（ｂ）は圧縮負荷中、（ｃ）は負荷解除後It is a side view which shows the volume change at the time of performing compression volume reduction in the state which bent and deformed the metal wire, (a) is before compression, (b) is in compression load, (c) is after load cancellation | release 金属ワイヤを屈曲変形しない状態で圧縮減容を行った場合における体積変化を示す側面図であって、（ａ）は圧縮前、（ｂ）は圧縮負荷中、（ｃ）は負荷解除後It is a side view which shows the volume change at the time of performing compression volume reduction in the state which does not bend and deform a metal wire, (a) is before compression, (b) is during compression load, (c) is after load cancellation | release

符号の説明Explanation of symbols

１ 一次破砕機
２ 回転篩
３ 二次破砕機
４ 分別機
５ 圧縮機
６ ベルトコンベア
７ ゴム材回収容器
８ 金属ワイヤ回収容器
９ 金属ワイヤ
１０ タイヤ
１１ 破砕片
１２ ゴム材
１３ スクリューコンベア部
１４ 圧縮部
１５ 投入口
１６ スクリューフィーダー
１６ａ 翼部
１７ 側壁
１８ 金属ワイヤ圧縮体
１９ 排出口 DESCRIPTION OF SYMBOLS 1 Primary crusher 2 Rotary sieve 3 Secondary crusher 4 Separator 5 Compressor 6 Belt conveyor 7 Rubber material collection container 8 Metal wire collection container 9 Metal wire 10 Tire 11 Fragmented piece 12 Rubber material 13 Screw conveyor part 14 Compression part 15 Input port 16 Screw feeder 16a Wing portion 17 Side wall 18 Metal wire compressed body 19 Discharge port

Claims (3)

補強材として金属ワイヤ（９）を使用しているタイヤ（１０）から上記金属ワイヤ（９）を分別回収する回収装置において、
上記タイヤ（１０）を破砕する破砕機（１）と、この破砕機（１）で破砕した破砕片（１１）をゴム材（１２）と上記金属ワイヤ（９）に分別する分別機（４）と、この分別機（４）で分別した上記金属ワイヤ（９）を圧縮減容する圧縮機（５）とから構成され、上記圧縮機（５）がスクリューコンベア部（１３）と圧縮部（１４）とから構成され、上記圧縮部（１４）は、その排出口（１９）に向かって徐々に縮径する側壁（１７）を備え、
このスクリューコンベア部（１３）に投入した上記金属ワイヤ（９）を上記圧縮部（１４）に搬送する際に、上記スクリューコンベア部（１３）の回転とともに回転して絡まり合うようにし、この絡まり合った状態のまま、上記圧縮部（１４）の側壁（１７）からの圧縮力を負荷して上記圧縮減容をなし、上記負荷を解除した際に、上記金属ワイヤ（９）がその弾性力によって圧縮減容されていない元の状態に戻るのを、金属ワイヤ（９）が互いに拘束することによって阻止し、圧縮減容された金属ワイヤ（９）の高い圧縮度を維持するようにしたタイヤの金属ワイヤ回収装置。 In the collection device for separating and collecting the metal wire (9) from the tire (10) using the metal wire (9) as a reinforcing material,
Crusher (1) for crushing the tire (10), and a separator (4) for separating the crush pieces (11) crushed by the crusher (1) into a rubber material (12) and the metal wire (9) If, constructed from this sorter (4) in fractionated the metal wire (9) the compression volume reduction to the compressor (5), the compressor (5) is a screw conveyor unit and the compression unit (13) (14 ), And the compression part (14) includes a side wall (17) that gradually decreases in diameter toward the discharge port (19),
When the metal wire (9) charged into the screw conveyor unit (13) is conveyed to the compression unit (14), the metal wire (9) is rotated and entangled with the rotation of the screw conveyor unit (13). In this state, the compression force is applied from the side wall (17) of the compression part (14) to reduce the compression volume, and when the load is released, the metal wire (9) is caused by its elastic force. In the tire , the metal wires (9) are prevented from returning to the original uncompressed state by restraining each other, and the high compressibility of the compressed and reduced metal wires (9) is maintained . Metal wire recovery device. 上記破砕機（１）を、破砕後の破砕片（１１）の大きさが次第に小さくなる多段の破砕機（１）で構成し、上記タイヤ（１０）の破砕片（１１）を上記多段の破砕機（１）で順次破砕するようにするとともに、各破砕機（１）の間に篩（２）を設け、ふるい落とされた破砕片（１１）を次段の破砕機（３）に投入する一方で、篩（２）に残留した破砕片（１１）を現段の破砕機（１）に再投入するようにした請求項１に記載のタイヤの金属ワイヤ回収装置。 The crusher (1) is constituted by a multistage crusher (1) in which the size of the crushing pieces (11) after crushing is gradually reduced, and the crushing pieces (11) of the tire (10) are cleaved by the multistage crushing machines. The crusher (1) is sequentially crushed, and a sieve (2) is provided between each crusher (1), and the crushed pieces (11) are put into the next-stage crusher (3). On the other hand, the metal wire recovery device for a tire according to claim 1, wherein the crushed pieces (11) remaining on the sieve (2) are reintroduced into the crusher (1) at the current stage. 上記破砕機（１）又は上記分別機（４）の少なくとも一方に磁石を設け、この磁石で上記金属ワイヤ（９）のみを分別するようにした請求項１又は２に記載のタイヤの金属ワイヤ回収装置。
The tire metal wire recovery according to claim 1 or 2 , wherein a magnet is provided in at least one of the crusher (1) or the sorter (4), and only the metal wire (9) is separated by the magnet. apparatus.
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