JP2003320595A - Manufacturing method for core for manufacturing tire - Google Patents
Manufacturing method for core for manufacturing tireInfo
- Publication number
- JP2003320595A JP2003320595A JP2002127979A JP2002127979A JP2003320595A JP 2003320595 A JP2003320595 A JP 2003320595A JP 2002127979 A JP2002127979 A JP 2002127979A JP 2002127979 A JP2002127979 A JP 2002127979A JP 2003320595 A JP2003320595 A JP 2003320595A
- Authority
- JP
- Japan
- Prior art keywords
- metal powder
- core
- manufacturing
- layer
- tire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 73
- 229910052751 metal Inorganic materials 0.000 claims abstract description 52
- 239000002184 metal Substances 0.000 claims abstract description 52
- 239000000843 powder Substances 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 238000000149 argon plasma sintering Methods 0.000 abstract description 2
- 238000003475 lamination Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 24
- 238000005266 casting Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Tyre Moulding (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、金属粉末を積層
造形することによりタイヤ製造用コアを製作するための
タイヤ製造用コア製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire manufacturing core manufacturing method for manufacturing a tire manufacturing core by laminating metal powders.
【０００２】[0002]
【従来の技術】空気入りタイヤを製造する際、環状に形
成された金属製のタイヤ製造用コアの外周面に未加硫の
ゴム、プライ等のタイヤ構成部材を貼り付け、これらタ
イヤ構成部材を貼り付けたコアをモールドに装填して加
硫を行う空気入りタイヤの製造方法がある。2. Description of the Related Art When manufacturing a pneumatic tire, a tire constituent member such as unvulcanized rubber or ply is attached to the outer peripheral surface of an annular metal-made tire manufacturing core. There is a method of manufacturing a pneumatic tire in which the stuck core is loaded into a mold and vulcanized.
【０００３】[0003]
【発明が解決しようとする課題】従来は、金属製のタイ
ヤ製造用コアを鋳造、または機械加工（ブロックから削
り出し）の何れか、または両者の組み合せで製作されて
いた。Conventionally, a core for manufacturing a tire made of metal has been manufactured by either casting or machining (cutting out from a block), or a combination of both.
【０００４】鋳造の場合、木型の製作、鋳造等の工程を
必要としている。また、通常、タイヤ製造用コアは中空
構造であり、中子型も必要である。したがって、鋳型の
製造時間（納期）、コストともに大であり、かつ、形状
（特に内面）の自由度も小さかった。In the case of casting, steps such as production of a wooden mold and casting are required. Further, the tire manufacturing core usually has a hollow structure, and a core type is also required. Therefore, the manufacturing time (delivery time) and cost of the mold are large, and the degree of freedom of the shape (especially the inner surface) is small.
【０００５】また、所望の最終精度確保のためには、鋳
造後の機械加工による仕上げは必須であり、ここで加工
時間（納期）、及びコスト共に大であった。Further, in order to secure a desired final accuracy, finishing by mechanical processing after casting is indispensable, and here, the processing time (delivery time) and the cost are large.
【０００６】一方、ブロックからの削り出しでは、切削
する量が多大であり、加工時間（納期）、及びコスト共
に大であった。On the other hand, when cutting from a block, the amount of cutting is large, and the processing time (delivery time) and the cost are large.
【０００７】本発明は上記事実を考慮し、少ない工数で
タイヤ製造用コアを形成することのできるタイヤ製造用
コアの製造方法を提供することが目的である。In view of the above facts, an object of the present invention is to provide a method for manufacturing a tire manufacturing core, which can form the tire manufacturing core with a small number of steps.
【０００８】[0008]
【課題を解決するための手段】請求項１に記載の発明
は、タイヤ製造用コアの製造方法であって、金属粉末に
レーザー光線を照射して燒結させ、金属粉末の供給及び
燒結を繰り返すことによって燒結部分を順次積層してタ
イヤ製造用コアを製造することを特徴としている。According to a first aspect of the present invention, there is provided a method for manufacturing a tire manufacturing core, which comprises irradiating a metal beam with a laser beam to sinter it, and repeating the supply and sinter of the metal powder. It is characterized in that the sintered parts are sequentially laminated to manufacture a tire manufacturing core.
【０００９】請求項１に記載のタイヤ製造用コアの製造
方法では、金属粉末にレーザー光線を照射して燒結さ
せ、金属粉末の供給及び燒結を繰り返すことによって燒
結部分を順次積層してタイヤ製造用コアを製造するの
で、鋳造で必要とする鋳型（中子や、鋳型を作る際の木
型を含む）を作成する必要が無く、また、形状の自由度
が向上する。In the method for manufacturing a tire manufacturing core according to the first aspect, the metal powder is irradiated with a laser beam to be sintered, and the supply of the metal powder and the sintering are repeated to successively stack the sintered portions to form a tire manufacturing core. Since it is manufactured, it is not necessary to prepare a mold (including a core and a wooden mold for making a mold) required for casting, and the degree of freedom of shape is improved.
【００１０】また、燒結層の１層当たりの厚さを薄くす
ることにより、タイヤ製造用コアの表面粗さを小さくす
ることができ、機械加工を無くすことも出来る。Further, by reducing the thickness of the sintered layer per layer, the surface roughness of the tire manufacturing core can be reduced, and machining can be eliminated.
【００１１】請求項２に記載の発明は、タイヤ製造用コ
アの３次元モデルを作成する第１の工程と、前記タイヤ
製造用コアの３次元モデルを一定のピッチでスライス
し、その輪切り形状のスライスデータを各々作成する第
２の工程と、金属粉末の層を形成する第３の工程と、前
記スライスデータに基づいてレーザービームを金属粉末
上に照射して、一層の金属粉末燒結層を形成する第４の
工程と、金属粉末燒結層の上に金属粉末の層を形成する
第５の工程と、第４の工程と第５の工程とを繰り返すこ
とによって金属粉末燒結層を順次一体化させながら積層
し、タイヤ製造用コアとする、ことを特徴としている。According to a second aspect of the present invention, the first step of creating a three-dimensional model of a tire manufacturing core, and the three-dimensional model of the tire manufacturing core are sliced at a constant pitch to form a sliced shape. A second step of creating slice data, a third step of forming a layer of metal powder, and a laser beam irradiating the metal powder on the basis of the slice data to form a single layer of the metal powder sintered layer. 4th step of forming, a 5th step of forming a layer of metal powder on the metal powder sinter layer, and the 4th step and the 5th step are repeated to integrate the metal powder sinter layer in sequence. However, it is laminated to form a tire manufacturing core.
【００１２】請求項２に記載のタイヤ製造用コアの製造
方法を以下に説明する。A method for manufacturing the tire manufacturing core according to claim 2 will be described below.
【００１３】第１の工程では、タイヤ製造用コアの３次
元モデルをＣＡＤ／ＣＡＭ等で作成する。In the first step, a three-dimensional model of a tire manufacturing core is created by CAD / CAM or the like.
【００１４】第２の工程では、タイヤ製造用コアの３次
元モデルを一定のピッチでスライスし、その輪切り形状
のスライスデータを各々作成する。In the second step, the three-dimensional model of the tire manufacturing core is sliced at a constant pitch, and slice data of the sliced shape is created.
【００１５】第３の工程では、金属粉末の層を形成す
る。In the third step, a layer of metal powder is formed.
【００１６】第４の工程では、スライスデータに基づい
てレーザービームを金属粉末上に照射して、一層の金属
粉末燒結層を形成する。In the fourth step, the metal powder is irradiated with the laser beam based on the slice data to form one layer of the metal powder sintered layer.
【００１７】第５の工程では、金属粉末燒結層の上に金
属粉末の層を形成する。In the fifth step, a layer of metal powder is formed on the sintered layer of metal powder.
【００１８】以後、順次スライスデータを読み出して、
第４の工程と第５の工程とを繰り返すことによって金属
粉末燒結層を順次一体化させながら積層することにより
所望の形状のタイヤ製造用コアが得られる。After that, the slice data is sequentially read out,
By repeating the fourth step and the fifth step and sequentially stacking the metal powder sinter layers, the core for tire production having a desired shape can be obtained.
【００１９】[0019]
【発明の実施の形態】本発明のタイヤ製造用コアの製造
方法を図１乃至図６にしたがって説明する。BEST MODE FOR CARRYING OUT THE INVENTION A method for manufacturing a tire manufacturing core according to the present invention will be described with reference to FIGS.
【００２０】図１、及び図２には、空気入りタイヤを製
造する際に用いる金属製のタイヤ製造用コア（所謂ハー
ドコア）１０が示されている。1 and 2 show a metal tire manufacturing core (so-called hard core) 10 used for manufacturing a pneumatic tire.
【００２１】タイヤ製造用コア１０は全体で円環状とさ
れ、大ブロック１２と小ブロック１４とに分割可能とな
っている。The tire manufacturing core 10 has an annular shape as a whole and can be divided into a large block 12 and a small block 14.
【００２２】図１に示すように、大ブロック１２、及び
小ブロック１４は中空構造となっている。As shown in FIG. 1, the large block 12 and the small block 14 have a hollow structure.
【００２３】次に、このタイヤ製造用コア１０の製造工
程を説明する。Next, the manufacturing process of the tire manufacturing core 10 will be described.
【００２４】大ブロック１２及び小ブロック１４共に製
造工程は同一であるので、代表して大ブロック１２の製
造工程を説明する。Since the manufacturing processes of the large block 12 and the small block 14 are the same, the manufacturing process of the large block 12 will be described as a representative.
【００２５】先ず、第１の工程では、大ブロック１２の
３次元モデル（３次元データ）を３次元のＣＡＤ／ＣＡ
Ｍ等で作成する。First, in the first step, the three-dimensional model (three-dimensional data) of the large block 12 is subjected to three-dimensional CAD / CA.
Create with M etc.
【００２６】第２の工程では、積層の方向を決定し、上
記大ブロック１２の３次元モデルを一定の積層厚みでス
ライスした複数の２次元形状（輪切り形状のスライスデ
ータ）を作成する（図３の概念図参照。）。なお、２次
元形状の厚みｔは、コアの精度を決定するものなので薄
い方が良いが、金属粉体径、加工時間等を考慮すると
０．１〜０．５mm程度が好ましい。In the second step, the stacking direction is determined, and a plurality of two-dimensional shapes (slice data of a round slice shape) are created by slicing the three-dimensional model of the large block 12 with a constant stacking thickness (FIG. 3). See the conceptual diagram.). The thickness t of the two-dimensional shape determines the accuracy of the core and is preferably thin, but is preferably about 0.1 to 0.5 mm in consideration of the metal powder diameter, processing time, and the like.
【００２７】第３の工程では、容器の底部（図示せず）
に金属粉末の層を、リコータ等を用いて一定厚みで形成
する。In the third step, the bottom of the container (not shown)
Then, a layer of metal powder is formed with a constant thickness using a recoater or the like.
【００２８】金属粉末は、レーザービームを照射した際
に燒結するものであり、例えば、直径が１０〜５０μm
で、材質としては鉄、ステンレス、アルミニューム等が
好ましい。The metal powder is one which is sintered when irradiated with a laser beam, and has a diameter of 10 to 50 μm, for example.
Therefore, the material is preferably iron, stainless steel, aluminum or the like.
【００２９】金属粉末の層の厚みは、第２の工程で決定
した寸法（０．１〜０．５mm程度）とする。The thickness of the layer of metal powder is the dimension (about 0.1 to 0.5 mm) determined in the second step.
【００３０】第４の工程では、２次元形状を、図４に示
すように、レーザー照射装置（例えば、光造形用のレー
ザー燒結装置。）１６のＣＡＭデータに変換し、該デー
タに基づいてレーザービーム１８で金属粉末２０上をト
レースする。In the fourth step, the two-dimensional shape is converted into CAM data of a laser irradiation device (for example, a laser sintering device for stereolithography) 16 as shown in FIG. 4, and the laser is converted based on the data. The beam 18 traces on the metal powder 20.
【００３１】レーザービーム１８の照射された金属粉末
２０はレーザービーム１８の熱により燒結し、２次元形
状に対応した板状の金属粉末燒結層（図の斜線部分）２
２が形成される。The metal powder 20 irradiated with the laser beam 18 is sintered by the heat of the laser beam 18, and a plate-like metal powder sintered layer (hatched portion in the figure) 2 corresponding to a two-dimensional shape
2 is formed.
【００３２】第５の工程では、前に形成した金属粉末２
０の層（燒結した部分も含む）の上全体に、一定厚さの
金属粉末の層を形成する。In the fifth step, the metal powder 2 previously formed is used.
A layer of metal powder having a constant thickness is formed on the entire 0 layer (including the sintered portion).
【００３３】以後、順次スライスデータを読み出して、
第４の工程と第５の工程とを繰り返すことによって、図
５および図６に示すように、金属粉末燒結層２２の上に
次の金属粉末燒結層２２が順次一体化して積層され、最
終的に所望の形状のタイヤ製造用コア１０が得られる。After that, the slice data is sequentially read out,
By repeating the fourth step and the fifth step, as shown in FIGS. 5 and 6, the next metal powder sintered layer 22 is sequentially integrated and laminated on the metal powder sintered layer 22, and finally, Thus, the tire manufacturing core 10 having a desired shape can be obtained.
【００３４】なお、タイヤ製造用コア１０の燒結完成後
は、燒結していない金属粉末を除去する。After the sintering of the tire manufacturing core 10 is completed, the unsintered metal powder is removed.
【００３５】本実施形態のタイヤ製造用コアの製造方法
によれば、鋳造工程が必要なく、切削可能不可能な形状
であっても形成可能であり、形状の自由度が向上する。According to the method for manufacturing a tire manufacturing core of this embodiment, a casting step is not required, and even a shape that cannot be cut can be formed, and the degree of freedom in shape is improved.
【００３６】また、金属粉末燒結層２２の厚さが薄いの
で、タイヤ製造用コア１０の表面粗さを小さくすること
ができ、機械加工を無くすことも可能となる。Further, since the sintered metal powder layer 22 is thin, the surface roughness of the tire manufacturing core 10 can be reduced, and machining can be eliminated.
【００３７】なお、レーザー照射装置１６、及び金属粉
末２０の層を形成するリコータをコンピュータ制御する
ことにより、全自動（無人で）でタイヤ製造用コア１０
を形成することも可能である。By controlling the laser irradiation device 16 and the recoater for forming the layer of the metal powder 20 by computer, the tire manufacturing core 10 is fully automated (unmanned).
Can also be formed.
【００３８】また、本実施形態の製造方法によれば、製
作時間（工数、納期）、コスト的に従来方法に対して圧
倒的に優位となる。Further, according to the manufacturing method of this embodiment, the manufacturing time (man-hours, delivery time) and cost are overwhelmingly superior to the conventional method.
【００３９】[0039]
【発明の効果】以上説明したように、本発明のタイヤ製
造用コアの製造方法によれば、少ない工数でタイヤ製造
用コアを提供することができる、という優れた効果を有
する。As described above, according to the method for manufacturing a tire manufacturing core of the present invention, there is an excellent effect that the tire manufacturing core can be provided with a small number of steps.
【図１】タイヤ製造用コアの斜視図である。FIG. 1 is a perspective view of a tire manufacturing core.
【図２】タイヤ製造用コアの側面図である。FIG. 2 is a side view of a tire manufacturing core.
【図３】タイヤ製造用コアの３次元モデル及び２次元モ
デルの概念図である。FIG. 3 is a conceptual diagram of a three-dimensional model and a two-dimensional model of a tire manufacturing core.
【図４】金属粉末上をレーザービームでトレースして金
属粉末燒結層を形成している様子を示す説明図である。FIG. 4 is an explanatory diagram showing a state in which a metal powder sintered layer is formed by tracing on the metal powder with a laser beam.
【図５】タイヤ製造用コアの形成途中を示す斜視図であ
る。FIG. 5 is a perspective view showing a process of forming a tire manufacturing core.
【図６】タイヤ製造用コアの形成途中を示す断面図であ
る。FIG. 6 is a cross-sectional view showing a process of forming a tire manufacturing core.
１０ タイヤ製造用コア １８ レーザービーム ２０ 金属粉末 ２２ 金属粉末燒結層 10 Tire manufacturing core 18 laser beam 20 metal powder 22 Sintered layer of metal powder
Claims (2)
て、 金属粉末にレーザー光線を照射して燒結させ、金属粉末
の供給及び燒結を繰り返すことによって燒結部分を順次
積層してタイヤ製造用コアを製造することを特徴とする
タイヤ製造用コアの製造方法。1. A method for manufacturing a tire manufacturing core, which comprises irradiating a metal powder with a laser beam to sinter the metal powder, and successively supplying and sintering the metal powder to sequentially laminate the sinter portions to manufacture the tire manufacturing core. A method of manufacturing a tire manufacturing core, comprising:
成する第１の工程と、 前記タイヤ製造用コアの３次元モデルを一定のピッチで
スライスし、その輪切り形状のスライスデータを各々作
成する第２の工程と、 金属粉末の層を形成する第３の工程と、 前記スライスデータに基づいてレーザービームを金属粉
末上に照射して金属粉末燒結層を形成する第４の工程
と、 金属粉末燒結層の上に金属粉末の層を形成する第５の工
程と、 第４の工程と第５の工程とを繰り返すことによって金属
粉末燒結層を順次一体化させながら積層し、タイヤ製造
用コアとする、 ことを特徴とするタイヤ製造用コアの製造方法。2. A first step of creating a three-dimensional model of a tire manufacturing core, and a step of slicing the three-dimensional model of the tire manufacturing core at a constant pitch and creating slice data of the sliced shape. 2, a third step of forming a layer of metal powder, a fourth step of irradiating the metal powder with a laser beam based on the slice data to form a metal powder sinter layer, and a metal powder sinter A fifth step of forming a layer of metal powder on the layer and a fourth step and a fifth step are repeated to sequentially stack the metal powder sinter layers while integrally laminating the layers to obtain a tire manufacturing core. A method for manufacturing a tire manufacturing core, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002127979A JP2003320595A (en) | 2002-04-30 | 2002-04-30 | Manufacturing method for core for manufacturing tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002127979A JP2003320595A (en) | 2002-04-30 | 2002-04-30 | Manufacturing method for core for manufacturing tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003320595A true JP2003320595A (en) | 2003-11-11 |
Family
ID=29541884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002127979A Pending JP2003320595A (en) | 2002-04-30 | 2002-04-30 | Manufacturing method for core for manufacturing tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003320595A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| JP2012512069A (en) * | 2008-12-17 | 2012-05-31 | ソシエテ ド テクノロジー ミシュラン | Lining assembly including skin for tire vulcanization mold |
| WO2014050363A1 (en) * | 2012-09-27 | 2014-04-03 | 住友ゴム工業株式会社 | Rigid core and method for manufacturing pneumatic tire using same |
| JP2014069333A (en) * | 2012-09-27 | 2014-04-21 | Sumitomo Rubber Ind Ltd | Rigid core and method for manufacturing pneumatic tire using the same |
| US10239269B2 (en) | 2012-09-27 | 2019-03-26 | Sumitomo Rubber Industries Ltd. | Rigid core and method for manufacturing pneumatic tire using same |
| US9815249B2 (en) | 2013-02-25 | 2017-11-14 | Bridgestone Corporation | Method for producing tire vulcanizing mold and tire vulcanizing mold |
| JP2014162099A (en) * | 2013-02-25 | 2014-09-08 | Bridgestone Corp | Method for producing tire-vulcanizing mold and tire-vulcanizing mold |
| WO2014129651A1 (en) * | 2013-02-25 | 2014-08-28 | 株式会社ブリヂストン | Method for producing a tire-vulcanizing mold and tire-vulcanizing mold |
| WO2015182444A1 (en) * | 2014-05-27 | 2015-12-03 | 株式会社ブリヂストン | Tire mold and tire mold manufacturing method |
| JP2015223750A (en) * | 2014-05-27 | 2015-12-14 | 株式会社ブリヂストン | Tire mold and production method of the same |
| JP2015223755A (en) * | 2014-05-27 | 2015-12-14 | 株式会社ブリヂストン | Tire vulcanization mold, and production method of tire vulcanization mold |
| US10350790B2 (en) | 2014-05-27 | 2019-07-16 | Bridgestone Corporation | Tire mold and method for manufacturing tire mold |
| US10501863B2 (en) | 2014-08-25 | 2019-12-10 | Seiko Epson Corporation | Forming method and formed article |
| WO2017068846A1 (en) * | 2015-10-23 | 2017-04-27 | 株式会社ブリヂストン | Method for producing mold for rubber article, mold for rubber article, method for producing mold member, and mold member |
| JPWO2017068846A1 (en) * | 2015-10-23 | 2018-08-09 | 株式会社ブリヂストン | Method for manufacturing mold for rubber article, mold for rubber article, method for manufacturing mold member, and mold member |
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