IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0146063
(2002-05-16)
|
우선권정보 |
JP-0167282 (2001-06-01) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
9 |
초록
▼
A mold for molding a foamed tube for a tire is formed from a first mold and a second mold. Each mold has an annular concave portion for tube molding, and joining faces which are continuous with the annular concave portion and are formed at an inner side and an outer side, in a radial direction, of t
A mold for molding a foamed tube for a tire is formed from a first mold and a second mold. Each mold has an annular concave portion for tube molding, and joining faces which are continuous with the annular concave portion and are formed at an inner side and an outer side, in a radial direction, of the annular concave portion. Each of the joining faces of the first mold and the joining faces of the second mold has horizontal joining faces provided adjacent to the annular concave portion in a direction orthogonal to an axial direction at a radially inner side and a radially outer side of the annular concave portion, and an inclined joining face provided continuously with the horizontal joining face so as to be inclined with respect to the horizontal joining face at one of an inner side and an outer side in the radial direction.
대표청구항
▼
1. A mold for molding an annular foamed tube for a tire, comprising:a first mold having a first annular concave portion which molds one side, in an axial direction, of the foamed tube for a tire; and a second mold having a second annular concave portion which molds another side, in the axial directi
1. A mold for molding an annular foamed tube for a tire, comprising:a first mold having a first annular concave portion which molds one side, in an axial direction, of the foamed tube for a tire; and a second mold having a second annular concave portion which molds another side, in the axial direction, of the foamed tube for a tire, wherein when the first mold and the second mold are combined in the axial direction, the first annular concave portion and the second annular concave portion form an annular space for molding the foamed tube for a tire, the first mold has first joining faces which are connected to the first annular concave portion and which are positioned at an inner side and an outer side, in a radial direction, of the first annular concave portion, and the first joining faces include horizontal joining faces provided adjacent to the first annular concave portion in a direction orthogonal to the axial direction at the inner side and the outer side, in the radial direction, of the first annular concave portion, and inclined joining faces each provided continuously with a respective one of the horizontal joining faces so as to be inclined with respect to the horizontal joining face at one of an inner side and an outer side in the radial direction, the second mold has second joining faces which are connected to the second annular concave portion and which are positioned at an inner side and an outer side, in the radial direction, of the second annular concave portion, and the second joining faces include horizontal joining faces provided adjacent to the second annular concave portion in a direction orthogonal to the axial direction at the inner side and the outer side, in the radial direction, of the second annular concave portion, and inclined joining faces each provided continuously with a respective one of the horizontal joining faces so as to be inclined with respect to the horizontal joining face at one of an inner side and an outer side in the radial direction, and the first mold and the second mold have configurations which complementarily complete one another via the first joining faces and the second joining faces. 2. A mold for molding a foamed tube for a tire according to claim 1, wherein, of the inclined joining faces of the first joining faces and the inclined joining faces of the second joining faces, at least the inclined joining faces which are positioned at the outer side in the radial direction form an angle of 90 to 120° with respect to the horizontal joining face adjacent thereto.3. A mold for molding a foamed tube for a tire according to claim 1, wherein a cross-sectional configuration, along the axial direction, of the annular space is circular, and given that a radius of the annular space is R and a length, in the axial direction, of the inclined joining face is H, a relation R?H?3R is satisfied.4. A mold for molding a foamed tube for a tire according to claim 1, wherein a width, in the radial direction, of each horizontal joining face of the first and second joining faces is in a range of 5 to 30 mm.5. A mold for molding a foamed tube for a tire according to claim 1, wherein when the first mold and the second mold are combined, the horizontal joining faces of the first joining faces and the horizontal joining faces of the second joining faces fit tightly together.6. A mold for molding a foamed tube for a tire according to claim 5, wherein the first mold and the second mold are aligned by engaging the inclined joining faces of the first joining faces and the inclined joining faces of the second joining faces.7. A mold for molding a foamed tube for a tire according to claim 6, wherein when the first mold and the second mold are combined, the inclined joining faces of the first joining faces and the corresponding inclined joining faces of the second joining faces are fit tightly together at at least one portion at at least one of the inner side and the outer side in the radial direction.8. A mold for molding a foamed tube for a tire according to claim 7, wherein when the first mold and the second mold are combined, a gap is formed between the inclined joining faces of the first joining faces and the corresponding inclined joining faces of the second joining faces, along the entire circumference of the molds.9. A mold for molding a foamed tube for a tire according to claim 6, wherein when the first mold and the second mold are combined, the inclined joining faces of the first joining faces and the corresponding inclined joining faces of the second joining faces are in a close contact with each other, along an entire range thereof.10. A mold for molding an annular foamed tube for a tire, comprising:a first mold having a first annular concave portion which molds one side, in an axial direction, of the foamed tube for a tire; and a second mold having a second annular concave portion which molds another side, in the axial direction, of the foamed tube for a tire, wherein when the first mold and the second mold are combined in the axial direction, the first annular concave portion and the second annular concave portion form an annular space for molding the foamed tube for a tire, the first mold includes horizontal joining faces provided adjacent to the first annular concave portion in a direction orthogonal to the axial direction at an inner side and an outer side, in a radial direction, of the first annular concave portion, and inclined joining faces each provided continuously with a respective one of the horizontal joining faces so as to be inclined with respect to the horizontal joining face at one of an inner side and an outer side in the radial direction, the second mold includes horizontal joining faces provided adjacent to the second annular concave portion in a direction orthogonal to the axial direction at an inner side and an outer side, in the radial direction, of the second annular concave portion, and inclined joining faces each provided continuously with a respective one of the horizontal joining faces so as to be inclined with respect to the horizontal joining face at one of an inner side and an outer side in the radial direction, and a sum of an angle, which the horizontal joining face of the first mold forms with the inclined joining face adjacent thereto, and an angle, which the horizontal joining face of the second mold forms with the inclined joining face adjacent thereto, is substantially 360°. 11. A mold for forming a foamed tube for a tire according to claim 10, wherein, of the two angles, a smaller angle is within a range of 90° to 120°.12. A mold for molding a foamed tube for a tire according to claim 10, wherein a cross-sectional configuration, along the axial direction, of the annular space is circular, and given that a radius of the annular space is R and a length, in the axial direction, of the inclined joining face is H, a relation R?H?3R is satisfied.13. A mold for molding a foamed tube for a tire according to claim 10, wherein a width, in the radial direction, of each horizontal joining face is in a range of 5 to 30 mm.14. A mold for molding a foamed tube for a tire according to claim 10, wherein when the first mold and the second mold are combined, the horizontal joining faces of the first mold and the horizontal joining faces of the second mold fit tightly together.
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