WO2009107526A1 - 空気入りタイヤの加硫装置および方法 - Google Patents
空気入りタイヤの加硫装置および方法 Download PDFInfo
- Publication number
- WO2009107526A1 WO2009107526A1 PCT/JP2009/052753 JP2009052753W WO2009107526A1 WO 2009107526 A1 WO2009107526 A1 WO 2009107526A1 JP 2009052753 W JP2009052753 W JP 2009052753W WO 2009107526 A1 WO2009107526 A1 WO 2009107526A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mold
- diameter
- sector
- sectors
- tire
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0606—Vulcanising moulds not integral with vulcanising presses
- B29D30/0629—Vulcanising moulds not integral with vulcanising presses with radially movable sectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0606—Vulcanising moulds not integral with vulcanising presses
- B29D30/0629—Vulcanising moulds not integral with vulcanising presses with radially movable sectors
- B29D2030/063—Vulcanising moulds not integral with vulcanising presses with radially movable sectors the moulds being split in upper and lower halves
Definitions
- the present invention relates to a vulcanizing apparatus and method for a pneumatic tire having a plurality of sectors divided in the circumferential direction into an upper mold and a lower mold, and more particularly, to smoothly release a vulcanized tire.
- the present invention relates to a pneumatic tire vulcanizing apparatus and method capable of reducing the load on a mold.
- a pneumatic tire vulcanizing apparatus having a plurality of sectors divided in the circumferential direction into an upper mold and a lower mold divided into two parts (for example, see Patent Document 1) is known.
- each of the upper mold and the lower mold is formed with a tapered surface inclined outward toward the mating surfaces, and each sector slides up and down along the tapered surface.
- the diameter is increased and the diameter is decreased.
- Each sector is urged to constantly move in a reduced diameter by a spring, and each sector is automatically moved by the urging force of the spring when the vulcanized tire is released after the diameter of each sector is increased. It is configured to move in a reduced diameter.
- An object of the present invention is to smoothly release a vulcanized tire from a plurality of sectors divided in the circumferential direction into an upper mold and a lower mold, and to reduce the load on the mold.
- An object of the present invention is to provide an apparatus and a method for vulcanizing a filled tire.
- a pneumatic tire vulcanizing apparatus of the present invention has a plurality of sectors divided in the circumferential direction in each of an upper mold and a lower mold, and these sectors are combined into an upper mold and a lower mold.
- Air that is slid up and down along a tapered surface that slopes outward toward the surface and is configured to be able to expand and contract in diameter, and to provide a spring that urges each sector to constantly decrease in diameter
- an extruding pin that moves the respective sectors up and down to move the diameter and reduce the diameter
- a drive cylinder that operates the extruding pin.
- the push pin is provided in the upper die and the lower die
- the drive cylinder is provided outside the upper die and the lower die, and the push pin and the drive cylinder are divided.
- the pneumatic tire vulcanizing method according to the present invention also includes a plurality of circumferentially divided sectors provided on each of the upper mold and the lower mold, and inclined outward toward the mating surface of the upper mold and the lower mold.
- the upper and lower molds are clamped by energizing each sector by slidably moving up and down along the taper surface so that the respective sectors can be expanded and contracted. Vulcanize the green tires placed inside the sector with the reduced diameter movement, open the upper mold and lower mold and expand the respective sectors to release the vulcanized tire, Thereafter, in the vulcanizing method for pneumatic tires in which each sector is reduced in diameter by the urging force of the spring, when the green tire is disposed inside each sector, the upper mold and the lower mold are opened.
- a plurality of sets of upper molds and lower molds provided with the extrusion pins are prepared, and the drive cylinders are installed on the vulcanizer side separately from the plurality of sets of upper molds and lower molds,
- One set of upper mold and lower mold corresponding to the tire to be vulcanized is selected from the plurality of upper molds and lower molds, and the selected upper mold and lower mold are respectively provided with the extrusion pins provided therein. It can also be made to attach to a vulcanizer so that it may contact a drive cylinder.
- the sectors are expanded and contracted.
- the diameter expansion and contraction movement of each sector can be controlled, so that the vulcanized tire can be released reliably and smoothly. Is possible. Along with this, excessive force does not act on the protruding portion of the molding surface of the sector.
- the speed of the reduced diameter movement is controlled by the push pin, so it impacts the other parts of the mold. Can be prevented. In this way, the load on the mold can be reduced.
- FIG. 1 is a longitudinal sectional view illustrating a pneumatic tire vulcanizing apparatus according to the present invention.
- FIG. 2 is a partially enlarged view of the vulcanizing apparatus of FIG.
- FIG. 3 is an explanatory diagram illustrating the movement of the sector of FIG.
- FIG. 4 is a vertical cross-sectional view illustrating a state in which clamping of the upper mold and the lower mold in FIG. 1 is started and the sector is expanded in diameter.
- FIG. 5 is a longitudinal sectional view illustrating a state where the upper mold and the lower mold are clamped while the upper and lower sectors in FIG. 4 are in contact with each other.
- FIG. 6 is a longitudinal cross-sectional view illustrating a state in which the clamping of the upper mold and the lower mold in FIG.
- FIG. 7 is a longitudinal cross-sectional view illustrating a state in which opening of the upper mold and the lower mold is started after the tire is vulcanized and the sector is expanded in diameter.
- FIG. 8 is a vertical cross-sectional view illustrating a state in which the upper die of FIG. 7 is further moved upward and the sector is reduced in diameter.
- FIG. 9 is a longitudinal cross-sectional view illustrating a state in which a vulcanized tire is taken out from the upper die and the lower die that have been opened.
- FIG. 10 is a longitudinal sectional view illustrating a state in which the upper mold and the lower mold are removed from the vulcanizer.
- a line segment CL shown in FIGS. 1 to 10 indicates a tire axial center of a green tire G (a vulcanized tire T after vulcanization), and a line segment HL indicates a center line in the tire width direction. ing. Further, the green tire G (vulcanized tire T after vulcanization) is held by the central mechanism and moves upward and downward, but the central mechanism is omitted in FIGS. 1 to 10.
- a pneumatic tire vulcanizing apparatus 1 (hereinafter referred to as a vulcanizing apparatus 1) according to the present invention is divided into an upper mold 2 and a lower mold 3 as shown in FIGS. Has a mold.
- Each of the upper mold 2 and the lower mold 3 is detachably attached to a platen 7 having a heat medium flow path. Since the upper mold 2 and the lower mold 3 have basically the same structure, FIGS. 2 and 3 illustrate the structure of the lower mold 3 as a representative.
- a drive cylinder 8 is installed above the platen 7 to which the upper mold 2 is attached, and the cylinder rod 8a penetrates the platen 7 and moves forward and backward toward the upper mold 2.
- a drive cylinder 8 is installed below the platen 7 to which the lower mold 3 is attached. The cylinder rod 8a penetrates the platen 7 and moves forward and backward toward the lower mold 3.
- the operation of the drive cylinder 8 (advance and retreat operation of the cylinder rod 8a) is controlled by the control device.
- the upper mold 2 and the lower mold 3 each have a detachable side plate 5 and a plurality of sectors 4 divided in the circumferential direction.
- the annular side plate 5 mainly molds and vulcanizes the side portion of the green tire G, and the plurality of sectors 4 divided in the circumferential direction are assembled in an annular shape so that the tread portion of the green tire G is mainly molded and vulcanized. Sulfurate. Therefore, on the surface of the sector 4 which is a molding surface of the tire, a protruding portion for forming a tire groove is provided.
- the upper mold 2 and the lower mold 3 are each provided with a guide block 6 having a tapered surface inclined outward toward the mating surface of the upper mold 2 and the lower mold 3.
- a back segment 4 a is attached to the back surface (outer side surface) of each sector 4, and a guide rod 10 extending along the tapered surface of the guide block 6 is provided between the opposing surfaces of the back segment 4 a and the guide block 6. Is provided.
- the distal end portion of the guide rod 10 is fixed to the back segment 4 a and the main body portion is inserted into a guide hole formed in the guide block 6.
- the spring 11 wound around the guide rod 10 is sandwiched between the rear end portion of the guide rod 10 and the entrance of the guide hole.
- the opposing surfaces of the guide block 6 and the back segment 4a are, for example, conical surfaces that are slidably engaged by the concave and convex engaging portions.
- the tip of an extrusion pin 9 that extends along the tapered surface of the guide block 6 comes into contact with the back segment 4a.
- a diameter-expanded portion is formed at the tip of the extrusion pin 9 to form a stepped shape so that the extrusion pin 9 does not fall down downward when the mold is replaced.
- a sealing material 12 is fitted in the middle of the push pin 9 in the longitudinal direction, and the tip of a cylinder rod 8a that moves forward and backward along the taper surface of the guide block 6 is applied to the rear end of the push pin 9. It comes to touch.
- each sector 4 expands in diameter and opens, and when sliding toward the direction away from the mating surface of the upper die 2 and the lower die 3, each sector 4 is opened. 4 is configured to be reduced in diameter and assembled in an annular shape.
- the spring 11 wound around the guide rod 10 always urges each sector 4 to move away from the mating surface of the upper mold 2 and the lower mold 3, that is, to move in a reduced diameter. Therefore, when the diameter of each sector 4 is expanded, the cylinder rod 8a is advanced, and the rear ends of the push pins 9 provided in the upper mold 2 and the lower mold 3 are pushed at the front ends thereof, and the spring 11 The diameter is expanded against the urging force. On the other hand, when each sector 4 is moved in a reduced diameter, the biasing force of the spring 11 is used. The reduced diameter moving speed is obtained by bringing the tip of the cylinder rod 8a into contact with the rear end of the push pin 9 and moving the cylinder. Control is performed by adjusting the retraction speed of the rod 8a.
- each sector 4 is housed in the upper die 2 and the lower die 3 in a state where the diameter is reduced. In this state, the green tire G is placed inside the mold.
- the cylinder rod 8 a of the drive cylinder 8 is moved forward, and the respective sectors 4 are expanded in diameter against the urging force of the spring 11 to be fully opened.
- the green tire G is held at the mold clamping position, and the upper mold 2 is moved downward to start clamping the upper mold 2 and the lower mold.
- the upper and lower sectors 4 are brought into contact with each other as illustrated in FIG. It is preferable to provide positioning irregularities on the contact surfaces of the upper and lower sectors 4. From the time when the upper and lower sectors 4 come into contact with each other, the green tire G is moved downward in synchronization with the downward movement of the upper mold 2. Similarly, from the time when the upper and lower sectors 4 come into contact with each other, the cylinder rod 8a is retracted in synchronism with the downward movement of the upper mold 2, and the respective sectors 4 are reduced in diameter.
- the upper mold 2 is moved upward to start the upper mold 2 and the lower mold 3 and the vulcanized tire T is moved upward.
- the cylinder rod 8a is moved forward so that the upper and lower sectors 4 are kept in contact with each other, and each sector 4 is expanded in diameter against the urging force of the spring 11. Let it be fully open. As a result, the vulcanized tire T is released from the surfaces of the sector 4 and the side plate 5.
- each of the sectors 4 in the diameter-expanded state tries to move in a reduced diameter by the urging force of the spring 11, but the cylinder rod 8a that is in contact with the push pin 9 regulates the movement speed of the reduced diameter. Control to do. For this reason, each sector 4 is slowly reduced in diameter and does not impact other parts of the mold such as the side plate 5, thereby reducing the load on the mold.
- the upper mold 2 is further moved upward, and the respective molds 4 are housed in the upper mold 2 and the lower mold 3 in a state where the diameter of each sector 4 is reduced, and the mold opening is completed.
- the vulcanized tire T is taken out from the inside of the mold in this state.
- the diameter expansion and contraction movement of each sector 4 are controlled. Even when the frictional resistance during the diameter reduction movement is not uniform, the respective sectors 4 can be reliably expanded in diameter and reduced in diameter. Therefore, the release of the vulcanized tire T is not delayed in part, and when the vulcanized tire T is released, the projecting portion of the molding surface of the sector 4 is formed on the vulcanized tire T. Since it can also prevent being caught in a groove
- the extrusion pin 9 is installed in the upper die 2 and the lower die 3, and the drive cylinder 8 is provided outside the upper die 2 and the lower die 3 (on the vulcanizing device 1 side) to drive with the extrusion pin 9.
- the cylinder rod 8a of the cylinder 8 is divided. Therefore, it is possible to replace only the upper mold 2 and the lower mold 3 while leaving the drive cylinder 8 in the vulcanizing device 1.
- the drive cylinder 8 installed on the vulcanizing apparatus 1 side is connected to the plurality of sets of the upper mold 2 and the lower mold 3. Can be shared against.
- one set of the upper mold 2 and the lower mold 3 corresponding to the tire to be vulcanized is selected from the plurality of sets of the upper mold 2 and the lower mold 3, and the selected upper mold is selected. What is necessary is just to attach 2 and the lower mold
- the structures of the upper mold 2 and the lower mold 3 can be simplified. Accordingly, the upper mold 2 and the lower mold 3 can be reduced in weight and the manufacturing cost can be reduced.
- the upper die 2 and the lower die 3 can be clamped after the green tires G are arranged inside the sector 4 in a state where the respective sectors 4 are enlarged and moved fully open.
- the ratio of the diameter of the green tire G to the diameter of the vulcanized tire T can be increased. This makes it difficult for excessive stress to occur in the green tire G during vulcanization, so that a more stable and uniform vulcanized tire T can be manufactured.
Abstract
Description
2 上型
3 下型
4 セクター
4a バックセグメント
5 サイドプレート
6 ガイドブロック
7 プラテン
8 駆動シリンダ
8a シリンダロッド
9 押出しピン
10 ガイドロッド
11 スプリング
12 シール材
G グリーンタイヤ
T 加硫済みタイヤ
Claims (4)
- 上型と下型のそれぞれに周方向に分割された複数のセクターを有し、これらセクターを、上型と下型の合せ面に向って外側に傾斜するテーパ面に沿うように上下に摺動させて拡径および縮径移動可能な構成にし、それぞれのセクターを常時縮径移動させるように付勢するスプリングを設けた空気入りタイヤの加硫装置において、前記それぞれのセクターを上下に摺動させて拡径および縮径移動させる押出しピンと、この押出しピンを作動させる駆動シリンダとを設けた空気入りタイヤの加硫装置。
- 前記押出しピンを上型および下型に内設し、前記駆動シリンダを上型および下型の外部に設け、押出しピンと駆動シリンダとを分割した構成にした請求項1に記載の空気入りタイヤの加硫装置。
- 上型と下型のそれぞれに設けた周方向に分割された複数のセクターを、上型と下型との合せ面に向って外側に傾斜するテーパ面に沿うように上下に摺動させて拡径および縮径移動可能にし、それぞれのセクターをスプリングにより常時縮径移動させるように付勢し、上型と下型とを型締めして縮径移動させた状態のセクターの内側に配置したグリーンタイヤを加硫し、上型と下型とを型開きしてそれぞれのセクターを拡径移動させることにより加硫済みタイヤを離型させ、その後それぞれのセクターをスプリングの付勢力により縮径移動させる空気入りタイヤの加硫方法において、前記グリーンタイヤをそれぞれのセクターの内側に配置する際には、上型と下型とを型開きして、駆動シリングによって作動する押出しピンにより、それぞれのセクターをスプリングの付勢力に対抗して拡径移動させた状態にし、この状態のセクターの内側にグリーンタイヤを配置し、その後、上下のセクターどうしを当接させたまま、上型と下型とを型締めしてセクターを縮径移動させた状態にしてグリーンタイヤを加硫し、加硫済みタイヤを離型させる際には、上型と下型とを型開きするとともに、上下のセクターどうしを当接させたまま、前記駆動シリンダによって作動する押出しピンにより、それぞれのセクターをスプリングの付勢力に対抗して拡径移動させて加硫済みタイヤを離型させ、その後スプリングの付勢力により縮径移動するそれぞれのセクターの縮径移動速度を、前記駆動シリンダによって作動する押出しピンによって制御する空気入りタイヤの加硫方法。
- 前記押出しピンを内設した上型および下型を複数組用意するとともに、これら複数組の上型および下型とは分離して加硫装置側に前記駆動シリンダを設置しておき、これら複数組の上型および下型の中から加硫するタイヤに対応した1組の上型および下型を選択し、選択した上型および下型を、それぞれに内設された押出しピンを前記駆動シリンダに当接させるように加硫装置に取り付けるようにした請求項3に記載の空気入りタイヤの加硫方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/863,066 US8282372B2 (en) | 2008-02-25 | 2009-02-18 | Apparatus and method for vulcanizing pneumatic tire |
CN2009801063683A CN101959660A (zh) | 2008-02-25 | 2009-02-18 | 充气轮胎的硫化装置以及方法 |
EP09715594.9A EP2246169B1 (en) | 2008-02-25 | 2009-02-18 | Apparatus and method for vulcanizing pneumatic tire |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008042926A JP4345898B2 (ja) | 2008-02-25 | 2008-02-25 | 空気入りタイヤの加硫装置および方法 |
JP2008-042926 | 2008-02-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009107526A1 true WO2009107526A1 (ja) | 2009-09-03 |
Family
ID=41015926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/052753 WO2009107526A1 (ja) | 2008-02-25 | 2009-02-18 | 空気入りタイヤの加硫装置および方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8282372B2 (ja) |
EP (1) | EP2246169B1 (ja) |
JP (1) | JP4345898B2 (ja) |
KR (1) | KR20100133958A (ja) |
CN (1) | CN101959660A (ja) |
WO (1) | WO2009107526A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102029665A (zh) * | 2009-09-30 | 2011-04-27 | 住友橡胶工业株式会社 | 轮胎用模具 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5307205B2 (ja) * | 2011-08-15 | 2013-10-02 | 住友ゴム工業株式会社 | タイヤ用加硫金型および自動二輪車用タイヤ |
KR101403366B1 (ko) * | 2012-08-03 | 2014-06-05 | 한국타이어 주식회사 | 타이어 가류금형 |
JP7234752B2 (ja) * | 2019-04-03 | 2023-03-08 | 住友ゴム工業株式会社 | タイヤ加硫装置及びタイヤ加硫方法 |
CN113306182B (zh) * | 2021-07-13 | 2022-12-27 | 山东豪迈机械科技股份有限公司 | 轮胎活络模具 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04348915A (ja) | 1991-05-28 | 1992-12-03 | Sumitomo Rubber Ind Ltd | タイヤ用金型 |
JP2007253400A (ja) * | 2006-03-22 | 2007-10-04 | Yokohama Rubber Co Ltd:The | タイヤ成形用二分割金型及びこのタイヤ成形用二分割金型を使用したタイヤの製造方法。 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2270088B1 (ja) * | 1974-03-29 | 1977-01-07 | ||
DE2502185C3 (de) * | 1975-01-21 | 1982-02-04 | Continental Gummi-Werke Ag, 3000 Hannover | Vulkanisierform für Fahrzeugluftreifen |
US6318985B1 (en) * | 2000-09-15 | 2001-11-20 | Michelin Recherche Et Technique S.A. | Two-piece segmented mold |
EP1422036A4 (en) * | 2001-08-28 | 2005-05-04 | Yokohama Rubber Co Ltd | METHOD AND DEVICE FOR VULCANIZING PNEUMATIC |
-
2008
- 2008-02-25 JP JP2008042926A patent/JP4345898B2/ja not_active Expired - Fee Related
-
2009
- 2009-02-18 KR KR1020107017845A patent/KR20100133958A/ko not_active Application Discontinuation
- 2009-02-18 WO PCT/JP2009/052753 patent/WO2009107526A1/ja active Application Filing
- 2009-02-18 US US12/863,066 patent/US8282372B2/en not_active Expired - Fee Related
- 2009-02-18 EP EP09715594.9A patent/EP2246169B1/en not_active Not-in-force
- 2009-02-18 CN CN2009801063683A patent/CN101959660A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04348915A (ja) | 1991-05-28 | 1992-12-03 | Sumitomo Rubber Ind Ltd | タイヤ用金型 |
JP2007253400A (ja) * | 2006-03-22 | 2007-10-04 | Yokohama Rubber Co Ltd:The | タイヤ成形用二分割金型及びこのタイヤ成形用二分割金型を使用したタイヤの製造方法。 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2246169A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102029665A (zh) * | 2009-09-30 | 2011-04-27 | 住友橡胶工业株式会社 | 轮胎用模具 |
Also Published As
Publication number | Publication date |
---|---|
EP2246169A4 (en) | 2012-06-06 |
US20110042852A1 (en) | 2011-02-24 |
US8282372B2 (en) | 2012-10-09 |
KR20100133958A (ko) | 2010-12-22 |
CN101959660A (zh) | 2011-01-26 |
JP2009196305A (ja) | 2009-09-03 |
JP4345898B2 (ja) | 2009-10-14 |
EP2246169A1 (en) | 2010-11-03 |
EP2246169B1 (en) | 2013-07-10 |
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