阅读说明：本技术 轮胎硫化装置以及轮胎硫化方法 (Tire vulcanizing device and tire vulcanizing method ) 是由 鬼松博幸 于 2020-03-27 设计创作，主要内容包括：本发明为轮胎硫化装置以及轮胎硫化方法,提供能够在能够从模具中取出已硫化轮胎的同时使胎侧模与胎面模的分割位置向轮胎半径方向的内侧移动的轮胎硫化装置。轮胎硫化装置(1)包含模具(2),该模具具有胎面模(4)以及上胎侧模、下胎侧模(5L、5U),所述胎面模包括在轮胎周向上配置的多个组合模。各组合模(6)包含上下分割开的上侧组合模部(10)以及下侧组合模部(11)。该轮胎硫化装置包含组合模支承单元(15),该组合模支承单元将上侧组合模部(10)和下侧组合模部(11)支承为能够在轮胎半径方向上彼此向相同方向移动,并且将上侧组合模部(10)和下侧组合模部(11)支承为能够在轮胎轴向上彼此向相反方向移动。(The invention provides a tire vulcanizing device and a tire vulcanizing method, which can take out a vulcanized tire from a mold and simultaneously move a split position of a sidewall mold and a tread mold to the inner side of a tire radius direction. A tire vulcanizing device (1) includes a mold (2) having a tread mold (4) including a plurality of split molds arranged in the tire circumferential direction, and an upper sidewall mold and a lower sidewall mold (5L, 5U). Each split mold (6) includes an upper split mold section (10) and a lower split mold section (11). The tire vulcanizing device includes a split mold support unit (15) that supports an upper split mold section (10) and a lower split mold section (11) so as to be movable in the same direction as each other in the tire radial direction, and supports the upper split mold section (10) and the lower split mold section (11) so as to be movable in opposite directions to each other in the tire axial direction.)

1. A tire vulcanizing apparatus comprising a mold having a tread mold including a plurality of split molds arranged in a tire circumferential direction, and an upper sidewall mold and a lower sidewall mold, wherein,

each combined mould comprises an upper combined mould part and a lower combined mould part which are divided up and down,

the tire vulcanizing device includes a split mold support unit that supports the upper and lower split mold sections so as to be movable in the same direction as each other in the tire radial direction and supports the upper and lower split mold sections so as to be movable in opposite directions to each other in the tire axial direction.

2. The tire vulcanizing device according to claim 1,

the distance from the dividing position of the upper sidewall mold, the lower sidewall mold and the tread mold to the radial direction of the tire bead reference line is smaller than 50% of the height of the section of the tire.

3. The tire vulcanizing device according to claim 1,

the split positions of the upper sidewall mold, the lower sidewall mold and the tread mold are closer to the inner side in the tire radius direction than the maximum width position of the tire.

4. The tire vulcanizing device according to any one of claims 1 to 3, wherein,

the tire vulcanizing device includes an upper side plate disposed above the upper split mold part partially apart from the upper split mold in a closed state of the mold,

the split mold support unit includes a 1 st moving means for bringing the upper split mold portion into proximity or contact with the upper side plate when the upper split mold portion is moved outward in the tire radial direction from the closed state.

5. The tire vulcanizing device according to claim 4,

the split mold support unit includes a 2 nd moving means for moving the upper split mold portion from the closed state to the outer side in the tire radial direction by the 2 nd moving means.

6. The tire vulcanizing device according to claim 5,

said 2 nd moving means comprise an actuator ring movable in the axial direction of the tyre,

the upper mold assembly has an upper inclined surface on an outer surface of the tire radially outward, the upper inclined surface being connected to the actuator ring and inclined downward toward the tire radially outward.

7. The tire vulcanizing device according to claim 6,

the second moving means moves the lower mold assembly from the closed state to the outside in the tire radial direction,

the lower mold assembly has a lower inclined surface on an outer surface of the tire radially outward, the lower inclined surface being connected to the actuator ring and inclined downward toward the tire radially outward.

8. The tire vulcanizing device according to any one of claims 1 to 7, wherein,

the tire vulcanizing device comprises a lower side plate which supports the lower combined mold part,

an upper surface of the lower side plate includes a support surface that supports a lower surface of the lower split mold portion when the lower split mold portion moves outward in a tire radial direction from a closed state of the mold,

the support surface is inclined downward toward the outside in the tire radial direction.

9. A tire vulcanizing method for vulcanizing a green tire by a mold having a tread mold including a plurality of split molds arranged in a tire circumferential direction and each including an upper split mold portion and a lower split mold portion divided up and down,

the tire vulcanizing method includes a tire removing step of removing a vulcanized tire from the mold after vulcanization,

the tire removal process includes:

1, moving the upper mold assembly and the lower mold assembly outward in a tire radial direction in a closed state of the mold; and

and 2, moving the upper combined mold part and the lower combined mold part in the direction of separating from each other in the axial direction of the tire.

10. The tire vulcanizing method according to claim 9, wherein,

the 1 st movement and the 2 nd movement are performed in parallel.

Technical Field

The present invention relates to a tire vulcanizing apparatus and a tire vulcanizing method capable of removing a vulcanized tire from a mold and moving a split position of a sidewall mold and a tread mold inward in a tire radial direction.

Background

For example, patent document 1 listed below describes a tire vulcanizing mold (hereinafter, may be referred to as a mold) for vulcanizing and molding a tire. The above mold comprises: a side plate forming a sidewall portion; a tread molding ring for molding a tread portion; and an actuator ring that moves the tread forming ring in a radial direction. In the closed state of the mold, the tread forming ring is connected to the side plate.

On the other hand, in a tire for a four-wheel drive vehicle such as an SUV, a technique of providing a block (hereinafter, sometimes referred to as a side block) also in a region near a tire maximum width position of a side wall portion has been proposed in recent years (for example, see patent document 2). Such sidewall blocks improve traction and aesthetics over the field.

Patent document 1: japanese laid-open patent publication No. 2016-196114

Patent document 2: japanese patent laid-open publication No. 2016-55820

However, when a tire having the sidewall block is vulcanized and molded using the mold as described above, a parting line of the mold is formed on the surface of the sidewall block, which causes a problem that the appearance of the tire is impaired. The parting line is a protruding mold mark generated at a dividing position between the tread molding ring and the side plate.

To cope with this, the present inventors have proposed the following technique: the parting line is made inconspicuous by moving the dividing position inward in the radial direction of the sidewall block. However, in the mold in which only the divided position is moved inward in the radial direction of the sidewall block, when the mold is opened, the tread molding ring is hooked to the sidewall block, and the tire cannot be taken out of the mold.

Disclosure of Invention

Therefore, an object of the present invention is to provide a tire vulcanizing apparatus and a tire vulcanizing method capable of moving a split position of a sidewall mold and a tread mold inward in a tire radial direction while removing a vulcanized tire from a mold.

The present invention provides a tire vulcanizing device including a mold having a tread mold including a plurality of split molds arranged in a tire circumferential direction, an upper side mold and a lower side mold, wherein each of the split molds includes an upper split mold section and a lower split mold section divided vertically, and a split mold supporting unit that supports the upper split mold section and the lower split mold section so as to be movable in a same direction in a tire radial direction and supports the upper split mold section and the lower split mold section so as to be movable in opposite directions in a tire axial direction.

In the tire vulcanizer of the present invention, it is preferable that a distance in the tire radial direction from a bead reference line at a dividing position of the upper sidewall mold, the lower sidewall mold, and the tread mold is smaller than 50% of a tire sectional height.

In the tire vulcanizer of the present invention, it is preferable that the upper sidewall mold, the lower sidewall mold, and the tread mold are divided at a position inward in the tire radial direction from the tire maximum width position.

In the tire vulcanizer of the present invention, it is preferable that the tire vulcanizer includes an upper side plate which is disposed above the upper split mold part in a state where the mold is closed, apart from the upper split mold part, and the split mold support unit includes a 1 st moving means which brings the upper split mold part into proximity or contact with the upper side plate when the upper split mold part is moved outward in the tire radial direction from the closed state.

In the tire vulcanizer of the present invention, it is preferable that the split mold support unit includes a 2 nd moving means for moving the upper split mold part from the closed state to the outer side in the tire radial direction.

In the tire vulcanizer according to the present invention, it is preferable that the 2 nd moving means includes an actuator ring movable in the tire axial direction, and the upper mold assembly has an upper inclined surface on an outer surface on the outer side in the tire radial direction, the upper inclined surface being connected to the actuator ring and inclined downward toward the outer side in the tire radial direction.

In the tire vulcanizer according to the present invention, it is preferable that the 2 nd moving means moves the lower split mold portion from the closed state to the outside in the tire radial direction, and the outer surface of the lower split mold portion on the outside in the tire radial direction has a lower inclined surface which is connected to the actuator ring and is inclined downward toward the outside in the tire radial direction.

In the tire vulcanizing device of the present invention, it is preferable that the tire vulcanizing device includes a lower plate that supports the lower split mold portion, an upper surface of the lower plate includes a support surface that supports a lower surface of the lower split mold portion when the lower split mold portion moves outward in the tire radial direction from the closed state of the mold, and the support surface is inclined downward toward the outside in the tire radial direction.

The present invention provides a tire vulcanizing method for vulcanizing a green tire by a mold having a tread mold including a plurality of split molds arranged in a tire circumferential direction and each including an upper split mold portion and a lower split mold portion which are vertically divided, and an upper sidewall mold portion and a lower sidewall mold portion, the tire vulcanizing method including a tire taking-out step of taking out a vulcanized tire from the mold after vulcanization, the tire taking-out step including: 1, moving the upper mold assembly and the lower mold assembly outward in a tire radial direction in a closed state of the mold; and 2 nd movement for moving the upper mold assembly and the lower mold assembly in a direction away from each other in the tire axial direction.

In the tire vulcanizing method of the present invention, it is preferable that the 1 st movement and the 2 nd movement are performed in parallel.

The tire vulcanizing device of the present invention includes a mold having a tread mold including a plurality of split molds, and an upper sidewall mold and a lower sidewall mold. Each combined die comprises an upper combined die part and a lower combined die part which are vertically divided. The tire vulcanizing device of the present invention further includes a split mold supporting unit that supports the upper split mold section and the lower split mold section so as to be movable in the same direction as each other in the tire radial direction and supports the upper split mold section and the lower split mold section so as to be movable in opposite directions to each other in the tire axial direction.

Thus, for example, even when a tire having a split position moved to the inside in the radial direction of the side block is vulcanized, the tread mold can be pulled out to the outside in the radial direction of the tire without being caught by the side block. That is, the tire vulcanizing device of the present invention can mold a tire having a good appearance, particularly a tire having no parting line on the surface of the sidewall block, and can take out the tire from the mold after vulcanization molding.

Drawings

Fig. 1 is a main part sectional view of a closed state of a tire vulcanizing device according to an embodiment of the present invention.

Fig. 2 (a) is a cross-sectional view of a tire formed by the tire vulcanizing device of fig. 1, and fig. 2 (b) is a side view of fig. 2 (a).

Fig. 3 is a main part sectional view of a closed state of the tire vulcanizing device.

Fig. 4 is a cross-sectional view conceptually showing a closed state of the taking-out process.

Fig. 5 is a cross-sectional view conceptually showing the 1 st stage of the taking-out process.

Fig. 6 is a cross-sectional view conceptually showing the 2 nd stage of the taking-out process.

Description of the reference symbols

1: a tire vulcanizing device; 2: a mold; 4: molding a tread; 5L: a lower tire side mold; 5U: an upper sidewall mold; 6: assembling a die; 10: an upper combined mold part; 11: a lower-side combination mold part; 15: a segmented die support unit.

Detailed Description

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a main part sectional view of a tire vulcanizing device (hereinafter, may be abbreviated as "device") 1 according to the present embodiment (embodiment 1). Fig. 2 is a sectional view and a side view of an embodiment of a vulcanized tire (hereinafter, sometimes simply referred to as "tire") 100 formed by the apparatus 1.

As shown in fig. 2, the tire 100 of the present embodiment is a tire for a four-wheel drive vehicle such as an SUV. The tire 100 may be a heavy duty tire, for example. In the present embodiment, the tire 100 includes: a tread portion 101; a sidewall portion 102 extending from both outer sides of the tread portion 101 in the tire axial direction to the inner side in the tire radial direction; and a bead portion 103 disposed radially inward of each sidewall portion 102. The tire 100 has a known internal structure using a cord reinforcing layer (not shown) such as a carcass, a belt layer, and a cap ply.

A tread pattern Tp including a plurality of block rows R extending in the tire circumferential direction is arranged in the tread portion 101, for example.

In the radially outer region Y of the sidewall portion 102, for example, a sidewall pattern Sp including sidewall blocks B2 is formed in order to improve traction performance over the field. The sidewall block B2 is a protrusion protruding from the surface S of the sidewall 102. The sidewall block B2 is formed including, for example, a tread end Te. The shape, the protruding height, and the like of the sidewall block B2 may be appropriately set according to the tire size and the like.

In the present specification, the radially outer region Y refers to a region located radially outward of the tire from the tire maximum width position m. The tire maximum width position m is a position at which the surface S of the sidewall portion 102 projects outward in the tire axial direction most, except for projections such as characters and a rim protector provided on the sidewall portion 102.

As shown in fig. 1, the apparatus 1 includes, for example, a mold 2 located outside a tire 100 and an apparatus main body 3 supporting the mold 2 so as to be openable and closable. In the present specification, a state in which the mold 2 can vulcanize and mold an unvulcanized green tire (not shown) is referred to as a closed state J1. The state of the mold 2 in which the green tire can be mounted inside and the vulcanized tire 100 can be taken out is referred to as an open state (shown in fig. 6) J2.

The mold 2 of the present embodiment includes an annular tread mold 4, an upper sidewall mold 5U, and a lower sidewall mold 5L, which are capable of expanding and contracting in the radial direction of the tire.

In the present specification, the tire radial direction, the tire axial direction, and the tire circumferential direction of the mold 2 refer to the radial direction, the axial direction, and the circumferential direction of the tire 100 housed in the mold 2, respectively, and are represented by X, Z and R, respectively. In the present embodiment, the tire axial direction coincides with the vertical direction (vertical direction). Reference numeral 104 is a tire rotation axis.

The tread mold 4 has a molding surface 4a for forming a tread pattern Tp and a sidewall pattern Sp, for example. The upper sidewall mold 5U and the lower sidewall mold 5L each have a molding surface 5a for forming, for example, an inner portion in the tire radial direction from the split position Q of the sidewall portion 102 and a bead portion 103. The division position Q is a boundary position where the upper sidewall mold 5U, the lower sidewall mold 5L, and the tread mold 4 contact the outer surface of the tire 100.

As shown in fig. 2, in the present embodiment, the dividing position Q is located radially inward of the tire radial direction at least with respect to the inner end Be of the side block B2 in the tire radial direction. Preferably, the distance L in the tire radial direction from the bead reference line BL at the dividing position Q is smaller than 50% of the tire sectional height H. The dividing position Q is preferably located inward in the tire radial direction from the tire maximum width position m. The present invention is most effective for the mold 2 having the dividing position Q.

As shown in fig. 1, the tread mold 4 includes, for example, a plurality of split molds 6 arranged in the tire circumferential direction. In the present embodiment, each split mold 6 includes an upper split mold portion 10 and a lower split mold portion 11 which are vertically divided.

In the present embodiment, the tread mold 4 includes a tread forming ring 7 that contacts the tire 100, and a sector plate (japanese: セクターシュー)8 for opening and closing the tread forming ring 7. The tread forming ring 7 and the sector plate 8 are each formed in an annular shape. The tread forming ring 7 has, for example, a forming surface 4 a.

The tread forming ring 7 of the present embodiment includes a plurality of upper ring pieces 7A and lower ring pieces 7B divided vertically and in the tire circumferential direction. The sector plate 8 of the present embodiment includes a plurality of upper sectors 8A and lower sectors 8B divided vertically and in the tire circumferential direction. In the present embodiment, the upper segment mold portion 10 is formed by the upper ring piece 7A and the upper segment piece 8A. In addition, the lower ring piece 7B and the lower segment piece 8B form a lower combined mold part 11.

Fig. 3 is a main part sectional view of the device 1. As shown in fig. 3, the upper mold assembly 10 has an upper inclined surface 12 inclined downward toward the tire radial direction outer side on an outer surface 10a on the tire radial direction outer side, for example. The upper inclined surface 12 of the present embodiment is formed on the upper segment 8A. The lower mold assembly 11 has, for example, a lower inclined surface 13a inclined downward toward the tire radial direction outer side and a lower axial surface 13b extending downward from the lower inclined surface 13a in the tire axial direction on the outer surface 11a on the tire radial direction outer side. The upper split mold 10 has a contact surface 10b that contacts the lower split mold 11. In the present embodiment, the contact surface 10b is formed parallel (horizontally) to the tire radial direction. The contact surface 10b is not limited to being formed parallel to the tire radial direction.

In the present embodiment, the lower mold assembly 11 has an inclined surface 14a inclined downward toward the outside in the tire radial direction on a lower surface 14 facing downward. The lower inclined surface 13a, the lower axial surface 13B, and the inclined surface 14a of the present embodiment are formed on the lower segment 8B.

In the present embodiment, the apparatus main body 3 includes: a split mold support unit 15 that movably supports the upper and lower split mold sections 10 and 11; an upper side plate 16 that supports the upper sidewall mold 5U; and a lower side plate 17 that supports the lower sidewall mold 5L.

In the closed state J1 of the mold 2, a gap K extending in the tire circumferential direction is provided between the upper side plate 16 and the upper split mold portion 10. That is, in the closed state J1, the upper side plate 16 is separated from the upper split mold 10 in the tire axial direction.

The split mold support unit 15 includes, for example, a 1 st moving tool 20 and a 2 nd moving tool 21.

The 1 st moving tool 20 is, for example, a known cylinder mechanism having a rod 20a and a cylinder 20b that supports the rod 20a in a telescopic manner. The upper mold unit 10 is fixed to the tip of the rod 20 a. The cylinder block 20b is held by, for example, a holding member 22 fixed to the upper side plate 16. In the present embodiment, the 1 st moving tool 20 is held so as to be movable in the tire radial direction through a guide hole 23 extending in the tire radial direction provided in the upper side plate 16 and the holding member 22.

In the present embodiment, the 2 nd moving means 21 includes an actuator ring 21a movable in the tire axial direction.

The actuator ring 21a has an inner surface 24 on the inner side in the tire radial direction. The inner surface 24 includes a downward inclined surface 24a inclined downward toward the tire radial direction outer side. The downward inclined surface 24a is connected to the upper inclined surface 12 and the lower inclined surface 13a by a guide portion (not shown) having a known structure, for example. Thereby, the actuator ring 21a can move relative to the upper and lower split mold portions 10 and 11. Further, it is preferable that a known retaining member for preventing the downward inclined surface 24a from being separated from the lower inclined surface 13a is provided in the guide portion.

In the present embodiment, the actuator ring 21a is fixed to a rod 26a that extends and contracts in the tire axial direction. The rod 26a is held in a cylinder portion (not shown) of a known structure, for example, so as to be extendable and retractable.

In the present embodiment, the lower plate 17 has an upper surface 28 facing upward. The upper surface 28 of the present embodiment includes a support surface 28a that supports the lower surface 14 of the lower split mold 11. The support surface 28a is inclined downward toward the tire radial direction outer side, for example. In the present embodiment, the support surface 28a is inclined at the same gradient as the inclined surface 14 a. Thus, for example, when the actuator ring 21a moves upward, the lower mold assembly 11 moves outward in the tire radial direction and can move while sliding downward due to its own weight.

The apparatus main body 3 includes, for example, a lifting/lowering unit 30 that vertically moves the upper plate 16. The lifting unit 30 of the present embodiment is fixed to the upper side plate 16. The lifting unit 30 moves the upper mold unit 10, the lower mold unit 11, the 1 st moving tool 20, the 2 nd moving tool 21, the upper side plate 16, and the upper sidewall mold 5U relative to the lower side plate 17 and the lower sidewall mold 5L in the tire axial direction, for example. The lifting unit 30 is preferably an actuator such as a cylinder mechanism or a ball screw mechanism of a known structure.

Next, a tire vulcanization method using the apparatus 1 will be described. The tire vulcanizing method of the present embodiment includes a step of disposing the green tire in the mold 2 in the open state J2, a step of bringing the mold 2 into the closed state J1 and vulcanizing the disposed green tire, and a tire removing step of removing the vulcanized tire 100 from the mold 2 after vulcanization. The step of arranging the green tire and the step of vulcanizing the green tire are the same as those of the conventional vulcanizing method. Therefore, only the tire removing step will be described below.

Fig. 4 is a sectional view conceptually showing a closed state J1 immediately after completion of vulcanization molding of the tire 100, fig. 5 is a sectional view conceptually showing a 1 st stage S1 in the tire removing process, and fig. 6 is a sectional view conceptually showing a 2 nd stage S2 in the tire removing process.

As shown in fig. 4, in the closed state J1, a gap K is provided between the upper mold unit 10 and the upper plate 16. In the present embodiment, the dividing position Q is disposed inward in the tire radial direction from the side block B2 and the tire maximum width position m.

As shown in fig. 5, the 1 st movement F1 and the 2 nd movement F2 are included in the 1 st stage S1. In the present embodiment, the upper split mold 10 and the lower split mold 11 are moved outward in the tire radial direction in the 1 st movement F1. In the 2 nd movement F2, the upper and lower split mold portions 10 and 11 are moved in the direction away from each other in the tire axial direction.

In order to realize the 1 st movement F1 and the 2 nd movement F2, in the present embodiment, the 1 st movement F1 and the 2 nd movement F2 are performed in parallel. In the present embodiment, the 1 st moving tool 20 and the 2 nd moving tool 21 are operated at predetermined timings, for example, simultaneously. That is, the actuator ring 21a is moved upward by the rod 26a, and the upper mold unit 10 is moved upward by the 1 st moving tool 20 so as to be separated from the tire 100 and come close to or abut against the upper side plate 16. Thus, the upper split mold 10 moves by the amount of the gap K while being guided in the tire radial direction by the guide hole 23, and thereby moves outward in the tire radial direction without being caught by the sidewall block B2 (shown in fig. 2) of the tire 100. The lower split mold 11 moves outward and downward in the tire radial direction so as to slide down on the support surface 28a of the lower side plate 17 by its own weight without being caught by the side block B2.

The angle θ of the support surface 28a with respect to the tire radial direction is determined by the relationship between the dividing position Q and the tire maximum width position m, and is preferably 5 to 15 degrees, and more preferably 8 to 12 degrees, for example.

The distance La (shown in fig. 4) in the tire axial direction between the lower end 10e in the vertical direction where the upper combined mold portion 10 contacts the tire 100 and the tire maximum width position m1 on the upper side is preferably 40% to 60% of the tire sectional width W, for example. If the distance La is less than 40% or exceeds 60% of the tire section width W, there is a possibility that the sidewall block B2 of the tire 100 may catch on the tread mold 4 at the 1 st movement F1 and the 2 nd movement F2. The tire section width W is a length in the tire axial direction between the tire maximum width positions m, m of the tire 100 in the mold 2. The tire maximum width position m1 on the upper side is the tire maximum width position m of the tire 100 uppermost in the mold 2.

In this way, in the present embodiment, the 1 st moving tool 20 and the 2 nd moving tool 21 are preferably controlled to be operable at predetermined timings by a control unit (not shown) such as a computer. The control unit is preferably capable of controlling the moving speed of the actuator ring 21a (rod 26a) and the moving speed of the upper mold unit 10 (rod 20a), for example.

In step 1S 1, for example, the upper mold assembly 10 and the lower mold assembly 11 are moved outward in the tire radial direction from the outer end 105 of the tire 100 in the tire radial direction.

As shown in fig. 6, in the 2 nd stage S2, the lifting unit 30 moves the upper mold assembly 10, the lower mold assembly 11, the 1 st moving tool 20, the 2 nd moving tool 21, the upper side plate 16, and the upper sidewall mold 5U upward to the position of the open state J2. In the present embodiment, the lower split mold 11 is located above the vertical upper end 106 of the tire 100. Thus, the tire 100 having the dividing position Q arranged on the inner side of the side block B2 in the tire radial direction can be taken out of the mold 2.

Next, a tire vulcanizing method according to embodiment 2 using the apparatus 1 will be described. The same structure as that of embodiment 1 will not be described. In embodiment 2, the lifting unit 30 is configured to be able to descend downward from the closed state J1 in fig. 4. The lifting unit 30 is lowered downward from the closed state J1 in fig. 4, and lowers the upper side plate 16 and the upper sidewall mold 5U by a distance corresponding to the tire axial length of the gap K. Accordingly, the sidewall 102 of the tire 100 is squashed downward by the upper sidewall mold 5U, and therefore the upper split mold 10 can be moved outward in the tire radial direction without catching on the sidewall block B2 (not shown).

A tire vulcanizing method according to embodiment 3 using the apparatus 1 will be described. The same structure as that of embodiment 1 will not be described. In embodiment 3, the lifting unit 30 is configured to be able to descend downward from the closed state J1 in fig. 4. In embodiment 3, the lifting unit 30 is lowered downward from the closed state J1 shown in fig. 4, and the upper die assembly 10 is moved upward by the first moving means 20 to eliminate the gap K. This allows the upper assembled mold 10 to be separated from the sidewall block B2 while flattening the sidewall 102 of the tire 100 downward. Therefore, the upper split mold 10 can be moved outward in the tire radial direction without being caught by the side block B2 (not shown).

While the above has described the particularly preferred embodiments of the present invention in detail, the present invention is not limited to these embodiments, and can be implemented by being modified into various embodiments.