JPH08323756A - Tire vulcanizer - Google Patents

Abstract

PURPOSE: To generate a clamping force without using a frame for causing it to increase in size. CONSTITUTION: At the time of mold clamping, a pair of lower side ring 14 and upper side ring 16 in contact with the side 11b of a green tire 11 are provided. Further, the tire vulcanizer comprises a split mold cassette unit 9 having a tread mold 17 in contact with the tread part 11a of the tire 11 and so formed as to sandwich the rings 14 and 16 at the time of mold clamping and a mold telescoping mechanism for clamping or opening the mold by telescoping the mold 17 to the rings 14 and 16 in contact with the side 11b of the tire 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire vulcanizer for vulcanizing and molding a green tire by pressing it against a mold that has been clamped.

[0002]

2. Description of the Related Art Generally, in a tire vulcanizer, a green tire is loaded into a mold that has been clamped, and then the inner surface of the green tire is directly or indirectly pressed by steam or pressure gas to obtain the outer surface of the green tire. The vulcanization molding is carried out by bringing the resin into close contact with the mold. Therefore, the tire vulcanizer applies a pressing force in the mold opening direction from the green tire to the mold that has been clamped, so that the mold is sufficiently larger than the pressing force so that the mold does not open during vulcanization molding. It is necessary to apply a clamping force to the mold to clamp it.

Therefore, the conventional tire vulcanizer is designed to generate a tightening force by various methods such as a vertical opening / closing type, a dome lock type, and a non-vertical opening / closing type. That is, the vertical opening and closing type tire vulcanizer is provided with a mold 51 and a tightening mechanism 52 in a press frame 53, as shown in FIG.
When the tightening mechanism 52 applies a tightening force to the mold 51, the press frame 53 receives the tightening force. Further, in the dome lock type tire vulcanizer, as shown in FIG. 12, the dome frame 55 is arranged so as to be vertically movable with respect to the base frame 54, and the base frame 54 and the dome frame 55 are locked during vulcanization molding. By being fastened by the mechanism 56, the tightening force is received by the lock mechanism 56 and the frames 54, 55. Further, in the non-vertical open / close type tire vulcanizer, as shown in FIG. 13, one end of the dome frame 58 is rotatably provided with respect to the base frame 57 by a crank mechanism 59, and the base frame 57 is vulcanized during vulcanization molding. By fixing the dome frame 58 and the dome frame 58 by the crank mechanism 59, the tightening force is applied to the crank mechanism 59 and the frame 57.5.
8 and 8 are configured to receive.

[0004]

However, in the above-mentioned conventional tire vulcanizers, at least the frame is designed to receive the tightening force, so that it is sufficient for the repeatedly applied tightening force. It is necessary to design the frame with the strength that can withstand. Therefore, since the frame having the increased thickness and width so as to have a large strength is arranged in the vertical direction and the horizontal direction of the mold, there is a problem that the tire vulcanizer is upsized.

Therefore, the present invention is to provide a tire vulcanizer capable of generating a tightening force without using a frame which causes an increase in size.

[0006]

In order to solve the above-mentioned problems, a tire vulcanizer according to a first aspect of the present invention comprises a pair of side part molds which come into contact with the side parts of a green tire during mold clamping, and both of the above-mentioned molds during mold clamping. A tread portion mold formed to sandwich the side portion mold and abutting against the tread portion of the green tire, and a reciprocating movement of the tread portion mold with respect to the side portion mold abutting against the side portion of the green tire. It is characterized by having split mold cassette means provided with mold advancing and retracting means for performing mold clamping and mold opening by performing the above.

Further, in the tire vulcanizer of claim 2, the tire vulcanizer of claim 1 further causes the processing required for vulcanization molding of the green tire in the split mold cassette means to be performed at a plurality of processing positions. Thus, it is characterized in that it has a processing stage means for movably supporting the split mold cassette means.

The tire vulcanizer according to claim 3 is the tire vulcanizer according to claim 1 or 2, further comprising a bead portion seal capable of sealing the bead portion of the green tire mounted on the split mold cassette means. It is characterized by having means.

According to a fourth aspect of the present invention, there is provided a tire vulcanizer in which the bead sealing means according to the third aspect is capable of sandwiching a bead portion of a green tire in an airtight state, and a clamp for driving the bead clamp mechanism. The drive mechanism is separable from the drive mechanism, and the bead clamp mechanism is incorporated in the split mold cassette means.

[0010]

According to the structure of claim 1, when the tread portion mold is advanced by the mold advancing / retreating means with respect to the pair of side portion molds abutting on the side portions of the green tire, the side portion molds are treaded. The mold is clamped while being sandwiched by the partial mold. Therefore, since the tread part mold is in a state where a clamping force is applied to the side part mold, when the pressing force in the mold opening direction is applied to the side part mold during vulcanization molding of the green tire. However, the mold clamping of the side mold is not released. As a result, it is possible to generate the tightening force for the side part mold without using a frame, so it is possible to form the frame required for the side part mold with a small strength or to eliminate the need for the frame. As a result, it is possible to downsize the tire vulcanizer.

According to the second aspect of the present invention, the split mold cassette means is movably supported by the processing stage means, and the processing required for vulcanization molding of the green tire can be performed at a plurality of processing positions. Therefore, for example, the mechanisms required for the vulcanization treatment and the take-out treatment can be arranged at different positions. This eliminates the need to consider the operation between the mechanisms as in the case of concentrating the mechanisms for each process at the same position, so that it is possible to simplify each mechanism and facilitate maintenance and inspection. . Furthermore, when replacing the side mold or tread mold, etc., the split mold cassette means can be moved to the position where the replacement work is most easily performed, so the mold replacement time can be shortened and productivity can be improved. It has become.

Further, according to the structure of claim 3, the bead portion sealing means seals the bead portion of the green tire.
It is possible to directly supply pressure gas to the green tire to apply a pressing force. Therefore, the bladder, which is a consumable item, is not required, and it is possible to prevent the green tire from being damaged due to the damage of the bladder during vulcanization molding and reduce the tire defect rate.

Further, according to the structure of claim 4, since the bead clamp mechanism is incorporated in the split mold cassette means, it can be taken out integrally with various components such as the side mold of the split mold cassette means. This makes it possible to perform maintenance and inspection more easily. Furthermore, since the split mold cassette means can be freely moved to the location of the clamp drive mechanism with the bead clamp mechanism and the green tire mounted,
By forming the processing stage means so as to perform the most time-consuming vulcanization molding at a plurality of positions, it is possible to increase the processing amount per unit time.

[0014]

【Example】

[Embodiment 1] An embodiment of the present invention will be described with reference to FIGS. The tire vulcanizer according to the present embodiment is a vertical opening-and-closing type vulcanizer, and as shown in FIG. 3, it is erected from a base portion 1a fixed to the floor surface and both end portions of the base portion 1a. The frame 1 is composed of the vertically installed parts 1b and 1b and the upper surface part 1c that is horizontally installed at the upper ends of the vertically installed parts 1b and 1b. In the frame 1, a lower platen 2 is fixedly provided on the upper surface of the base portion 1 a, and an upper platen 5 is provided so as to face the lower platen 2.

An elevating cylinder 7 fixed to the upper surface portion 1c of the frame 1 is connected to the upper platen 5, and the elevating cylinder 7 elevates and lowers the upper platen 5. Further, the upper platen 5 has a vertically movable table 6
The upper and lower movable bases 6 are also connected to each other, and the both ends of the slide rails 8 are provided at the vertical portions 1b and 1b of the frame 1.
8 is movably engaged with the lower platen 2 and the upper platen 5.
The positional relationship in the left-right direction with and is made to be constant.

A split mold cassette device 9 is provided between the lower platen 2 and the upper platen 5. As shown in FIG. 1, the split mold cassette device 9 is formed in a cylindrical shape having a hollow portion inside so that the green tire 11 can be loaded therein, and the bladder 12 is provided at the center of the hollow portion. The bladder center mechanism 10 provided is inserted from the lower platen 2 side. The bladder center mechanism 10 is configured so that pressure gas such as steam or nitrogen gas
By being supplied to the second tire 2, the inner surface of the green tire 11 is pressed via the bladder 12.

The split mold cassette device 9 has an annular lower bead ring 13 that abuts on the lower surface of the bladder 12 and the lower bead portion 11c of the green tire 11, and the lower side portion 11b of the green tire 11. It has the lower side ring 14 which contacts, in this order from the inner peripheral side. Further, a lower support member 31 is provided in the outer peripheral direction of the lower side ring 14, and the lower bead ring 13, the lower side ring 14, and the lower support member 31 are fixed to the lower platen 2. Has been done.

On the other hand, above the lower bead ring 13, the lower side ring 14, and the lower support member 31, an upper bead ring 15, an upper side ring 16, and an upper support member 30 are arranged so as to face each other. The upper bead ring 15 and the upper side ring 16 are fixed to the upper platen 5, and when the upper platen 5 is lowered, the bead portion 11c and the side portion located on the upper surface of the bladder 12 and the green tire 11 are positioned. It is adapted to come into contact with 11b.

Tapered surfaces 16a and 14a inclined toward the green tire 11 toward the outer peripheral direction are formed on the upper peripheral portion of the upper side ring 16 and the lower peripheral portion of the lower side ring 14. Further, tread portion molds 17 divided into eight are arranged in the outer peripheral direction of the side rings 16 and 14, and all the tread portion molds 17 are integrated when they advance in the inner peripheral direction B. , The inner peripheral surface is the tread portion 11 of the green tire 11.
It comes into contact with a.

Further, projecting portions 17a, 17a projecting in the inner circumferential direction B are formed on the upper and lower portions of the inner circumferential surface of each tread mold 17, and these projecting portions 17 are formed.
a / 17a has a tapered surface 1 of the side ring 16/14.
Contact members 18, 18 are provided so as to contact the 6a, 14a. When the tread portion mold 17 advances in the inner circumferential direction B, the protruding portions 17a, 17a are brought into contact with the tapered surfaces 16a, 14a via the abutting members 18, 18 so that both side rings 16, 14a. By sandwiching between the side rings 16 and 14, a vertical tightening force is applied.

The advancing and retracting movement of the tread portion mold 17 with respect to the side rings 16 and 14 is performed by a mold advancing and retracting mechanism. The mold advancing / retreating mechanism includes the upper support member 30 and the lower support member 31 described above.
And a first sliding block 19, a second sliding block 20, a segment gear 21, and a gear drive mechanism 22 provided between the supporting members 30 and 31. First
The sliding block 19 and the second sliding block 20 are shown in FIG.
As shown in, each tread part mold 1 divided into eight
7 is provided corresponding to the first sliding block 19
The inner peripheral surface is fixed to the outer peripheral surface of the tread portion mold 17, and the movement direction is regulated so as to be movable only in the radial direction (A direction and B direction).

The first sliding block 19 and the second sliding block 20 are engaged with each other in the circumferential direction via the engaging portions 19a, 20a shown in FIG. The second sliding block 20 is curved so that the inner peripheral surface engaged with the first sliding block 19 moves away from the center point O from one end side to the other end side, and the outer peripheral surface of the segment gear 21. It is fixed to the inner surface. The segment gear 21 is formed in an annular shape, and a gear portion 21a is formed on the outer peripheral surface thereof. The gear portion 21a is meshed with the drive gear 23 of the gear drive mechanism 22, and the drive gear 23 is rotated in the forward and reverse directions by a drive motor (not shown) of the gear drive mechanism 22.

As a result, the gear drive mechanism 22 includes the segment gear 21 through the drive gear 23 and the gear portion 21a.
Can be turned in the C direction and the D direction. When the segment gear 21 turns in the D direction, the segment gear 21 retracts the first sliding block 19 in the outer peripheral direction A via the second sliding block 20. The first sliding block 19 is advanced in the inner circumferential direction B via the second sliding block 20 when the first sliding block 19 is turned in the C direction.

The operation of the tire vulcanizer having the above structure will be described. As shown in FIG. 1, after the unvulcanized green tire 9 is loaded into the split mold cassette device 9, the bladder center mechanism 10 is advanced into the cavity 24, and low pressure gas is supplied to the bladder 12. The upper platen 5 is lowered by the lifting cylinder 7 shown in FIG. As a result, the upper bead ring 15 and the upper side ring 16 provided on the upper platen 5 are connected to the side portion 11b and the bead portion 11c of the green tire 11.
And the bladder 12 are brought into contact with each other.

After that, as shown in FIG. 2, the gear drive mechanism 22 turns the segment gear 21 in the direction C through the drive gear 23 and the gear portion 21a, so that all the first gears fixed to the segment gear 21 are fixed. 2 Sliding block 20 ...
Will be turned in the C direction. At this time, each of the second sliding blocks 20 is engaged with the first sliding block 19 so as to be movable in the circumferential direction, and is also movable only in the radial direction. Therefore, when the second sliding block 20 is turned in the C direction, the first sliding block 19 is rotated.
Moves in the inner peripheral direction B by moving along the inner peripheral surface of the second sliding block 20, and as shown in FIG.
Upper and lower side rings 16/1 via 8 ・ 18
It comes into contact with the tapered surfaces 16a and 14a of No. 4.

With the advance of the above-mentioned tread portion molds 17 ..., all the tread portion molds 17 ...
When they are integrated while abutting against 6/14, all the tread part molds 17 ..., the side rings 16/14, and the bead rings 15/13 are clamped, and the cavity part 2 is formed.
4 will be formed. After this, the bladder center mechanism 10
By supplying a high-pressure gas such as nitrogen gas from the bladder 12 to the bladder 12, the green tire 11 is vulcanized while being pressed by the side rings 16 and 14 and the tread portion mold 17 through the bladder 12. .

Next, when the side rings 16 and 14 and the tread portion mold 17 are pressed in the mold opening direction by vulcanization molding of the green tire 11, the side rings 16 and
The pressing force in the vertical direction is applied to 14, and the pressing force in the outer peripheral direction A is applied to the tread portion mold 17. At this time, the side rings 16 and 14
Is clamped by the protruding portions 17a and 17a of the tread portion mold 17, and thus is fixed with a tightening force larger than the pressing force in the vertical direction. Also,
The tread portion mold 17 is fixed by a mold advancing / retreating mechanism such as the first sliding block 19 with a tightening force larger than the pressing force in the outer peripheral direction A. Therefore, even when pressure is applied to the side rings 16 and 14 and the tread portion mold 17 in the mold opening direction (vertical direction and outer peripheral direction A), the mold clamped state is maintained.

After this, when the vulcanization molding of the green tire 11 is completed, as shown in FIG. 2, the gear drive mechanism 22 causes the segment gear 21 and the first sliding block 19 through the drive gear 23 and the gear portion 21a. The second sliding block 20 is retracted in the outer peripheral direction A by rotating the shaft in the C direction. And the upper bead ring 15
After the upper side ring 16 and the upper platen 5 are lifted, the vulcanized green tire 11 is carried out to the next step.

In the split mold cassette device 9 of this embodiment, the drive gear 23 of the gear drive mechanism 22 and the gear portion 21a of the segment gear 21 are meshed with each other to drive the drive gear 23.
Is rotated by a drive motor (not shown) to rotate the segment gear 21, but the present invention is not limited to this. That is, for example, as shown in FIG. 4, the rack gear 25 provided on the gear cylinder 26 is meshed with the gear portion 21a of the segment gear 21, and the rack gear 25 is moved forward and backward by the gear cylinder 26 to move the segment gear. 21 may be turned. Further, in the present embodiment, as shown in FIG. 3, the vertical mold vulcanizer of the open / close type is used, so the split mold cassette device 9 is arranged horizontally, but the present invention is not limited to this. The split mold cassette device 9 may be arranged at an angle that facilitates the handling in consideration of the layout, maintenance, and inspection of the tire vulcanizer and peripheral devices.

[Embodiment 2] Another embodiment of the present invention will be described with reference to FIGS. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 7, the tire vulcanizer according to this embodiment has a split mold cassette device 9 for forming the cavity 24 while sandwiching the side rings 16 and 14 by the tread mold 17. There is. In this split mold cassette device 9, an upper bead ring 15 and an upper side ring 16 are fixedly mounted on an upper surface member 36, and these rings 15 and 16 are suspended by a mold moving mechanism (not shown) together with the upper surface member 36. It is supposed to be moved.

On the other hand, the lower support member 31 includes a movable carriage 32.
It is fixed to. A centering guide hole 32a is formed in the center of the moving carriage 32 so as to be inclined so as to reduce the hole diameter from the lower surface side to the upper surface side. The centering guide hole 32a is fitted into a positioning ring 33 provided on the lower platen 2, so that the positional relationship between the split mold cassette device 9 and the lower platen 2 is made constant. Wheels 35 are rotatably provided at both ends of the moving carriage 32 via wheel supporting members 34, and the wheels 35 are mounted on the first movable rails 37a.

As shown in FIG. 5, the first movable rails 37a are arranged in a pair on the left and right sides of the common floor 38, respectively. The common floor 38 has a tire unloading stage 39 for taking out the green tire 11, and a vulcanization molding stage 40 for carrying in the green tire 11 and vulcanization molding. In the split mold cassette device 9, the movable carriage 32 has the first movable rail 37a and the second movable rail 37b of the cassette fixing mechanism 43 described later.
By moving back and forth along, the tire take-out stage 39 and the vulcanization molding stage 40 are moved. The split mold cassette device 9 is moved back and forth between the stages 39 and 40 by a cassette moving mechanism such as a cylinder type or a chain type.

The tire take-out stage 39 is set as a place for taking out the vulcanized green tire 11 after moving the upper bead ring 15 and the upper side ring 16 together with the upper surface member 36 to the retracted position. Further, as shown in FIG. 6, the vulcanization molding stage 40 has a pair of cassette fixing mechanisms 43, 43 at both end positions of the common floor 38 and a lower platen having the positioning ring 33 described above. 2 and the bladder center mechanism 10 are provided at the center position between the fixed blocks 41.

Each cassette fixing mechanism 43 described above is used for the carriage 3
Fixed block 4 having a U-shaped cross section that can be engaged with one end of
1, a second movable rail 37b arranged in the fixed block 41, and a plurality of block elevating cylinders 42 for elevating the fixed block 41. Then, the cassette fixing mechanism 43 causes the second movable rail 37b of the fixed block 41 and the first movable rail 37a from the tire extraction stage 39 side to coincide with each other by raising the fixed block 41 by the block elevating cylinders 42 ... In addition, by lowering the fixed block 41 by the block lifting cylinder 42, the fixed block 41 is engaged with the moving carriage 32 and the split mold cassette device 9 is lowered in the lower platen 2 direction. There is.

The operation of the tire vulcanizer having the above structure will be described. First, as shown in FIG. 5, the fixed block 41 is lifted by the block lifting cylinder 42,
The second movable rail 37b and the first movable rail 37a are aligned with each other. After this, the split mold cassette device 9
Is a first movable rail 3 by a cassette moving mechanism (not shown).
7A and the second movable rail 37b, the split mold cassette device 9 is moved toward the vulcanization stage 40.

When the split mold cassette device 9 reaches the vulcanization molding stage 40, as shown in FIG. 6, the fixed block 41 is lowered by the block lifting cylinder 42 and engaged with the upper surface of the moving carriage 32. . Then, the movable carriage 32 is forcibly lowered by the fixed block 41, and the centering guide hole 32a of the movable carriage 32 is pressed by the lower platen 2 while being fitted into the positioning ring 33, so that the lower platen 2 is predetermined. Will be positioned at.

Next, as shown in FIG. 7, the upper bead ring 15 and the upper side ring 1 are moved by moving the upper surface member 36 by a mold moving mechanism (not shown).
After 6 is removed from the split mold cassette device 9, the unvulcanized green tire 11 is replaced with the split mold cassette device 9.
It will be brought in. And the bladder center mechanism 1
0 is increased, and the upper bead ring 15 and the upper side ring 16 are moved to the split mold cassette device 9 together with the upper surface member 36 while the low pressure gas is supplied to the bladder 12.

After that, the same operation as in the first embodiment is performed.
By the turning of the segment gear 21 and the second sliding block 20, ..., The first sliding block 19 and the tread portion mold 17 are advanced in the inner peripheral direction B, and the protruding portions 17a and 17a of the tread portion mold 17 allow the upper and lower portions to move upward and downward. After the side side rings 16 and 14 are fixed, the green tire 11 is vulcanized and molded. Then, when the vulcanization molding of the green tire 11 is completed, the pressure gas in the bladder 12 is exhausted, and the bladder center mechanism 10 is lowered into the lower platen 2 together with the bladder 12. After this, as shown in FIG. 5, the fixed block 41 is raised,
After the second movable rail 37b of the fixed block 41 is aligned with the first movable rail 37a, the split mold cassette device 9
Will be moved toward the tire extraction stage 39.

When the split mold cassette device 9 reaches the tire take-out stage 39, as shown in FIG. 7, the segment gear 21 and the second sliding block 20 are swung to move the tread portion mold 17 through the first sliding block 19. Is retracted, and the tightening of the side rings 16 and 14 by the tread portion mold 17 is released. Then, the upper surface member 36 is moved by a mold moving mechanism (not shown) to remove the upper bead ring 15 and the upper side ring 16 from the split mold cassette device 9, and then the vulcanized green tire 11 is split mold. It is carried out from the cassette device 9 to the next step.

As described above, the tire vulcanizers of Examples 1 and 2 were used in the side portion 11b of the green tire 11 during mold clamping.
A pair of side part molds (lower side ring 14 and upper side ring 16) that come into contact with each other, and both side part molds are sandwiched during mold clamping.
No. 1 tread part mold 1 abutting on the tread part 11a
7 and mold advancing / retreating means (mold advancing / retreating mechanism) for performing mold clamping and mold opening by advancing and retracting the tread part mold 17 with respect to the side part mold that is in contact with the side part 11b of the green tire 11. It is configured to have split mold cassette means (split mold cassette device 9).

As a result, when the tread portion mold 17 is advanced by the mold advancing / retreating means with respect to the pair of side portion molds abutting on the side portion 11b of the green tire 11, these side portion molds are tread portion mold 17. It will be clamped while being clamped by.
Therefore, since the tread portion mold 17 is in a state in which a clamping force is applied to the side portion mold, a pressing force in the mold opening direction is applied to the side portion mold during vulcanization molding of the green tire 11. Even if it does, the mold clamping of the side mold is not released. As a result, the tightening force for the side part mold can be generated without using a frame, so it is possible to form the frame required for the side part mold with a small strength or to eliminate the need. As a result, the tire vulcanizer can be downsized.

Further, in the tire vulcanizer of Example 2, the processing required for vulcanization molding of the green tire 11 in the split mold cassette means is performed at a plurality of processing positions (tire extraction stage 39, vulcanization molding stage 40, etc.). To make it happen
It is configured to have processing stage means (common floor board 38, first movable rail 37a, cassette fixing mechanism 43, etc.) that movably supports the split mold cassette means.

As a result, for example, the mechanisms required for the vulcanization process and the take-out process can be arranged at different positions, and the mechanisms for the processes can be separated from each other as in the case where the mechanisms for each process are concentrated in one place. Since it is not necessary to consider the operation, it is possible to simplify each mechanism and facilitate maintenance and inspection. Further, when replacing the side mold or tread mold 17, etc., the split mold cassette means can be moved to a position where the replacement work is most easily performed, so that the replacement time can be shortened and the productivity can be improved. become.

In the split mold cassette device 9 of the first and second embodiments, the green tire 11 is indirectly pressed via the bladder 12 for vulcanization molding.
It is not limited to this. That is, the split mold cassette device 9 has, as shown in FIGS. 8 and 9, a pair of upper and lower bead clamp mechanisms 27, 27 instead of the bladder center mechanism 10, and the clamp sector of these bead clamp mechanisms 27, 27. The bead portion 11c of the green tire 11 including the 28.28 and the upper and lower bead rings 15.13.
-By sandwiching 11c in an airtight state, the green tire 11 may be directly pressed by pressure gas to be vulcanized and molded.

As a result, it is not necessary to replace the bladder 12, which is a consumable item, and it is possible to eliminate the defects of the green tire 11 due to the damage of the bladder 12. Then, as shown in FIG. 8, the bead clamp mechanism 27.2
When 7 is divided, the upper bead clamp mechanism 27 and the clamp drive mechanism 29 for driving the bead clamp mechanism 27 can be incorporated in the loader mechanism used for carrying in the green tire 11.

Further, as shown in FIG. 9, the bead clamp mechanism 27, 27 and the clamp drive mechanism 29, 29 can be separated from each other, and the upper bead clamp mechanism 27 is incorporated in the upper bead ring 15 so that the lower bead clamp is formed. Mechanism 27
Is incorporated in the lower bead ring 13, the split mold cassette device 9 can be freely moved to the place where the clamp drive mechanism 29, 29 is mounted with the bead clamp mechanism 27, 27 and the green tire 11 mounted. it can. As a result, for example, as shown in FIG. 10, the tire mounting stage 44 for mounting the unvulcanized green tire 11 on the split mold cassette device 9 and the clamp drive mechanism 2.
It is possible to configure a tire vulcanizing machine including 9.29 and having a plurality of vulcanization stages 45 for vulcanizing and molding the green tire 11 and a tire take-out stage 39 for taking out the vulcanized green tire 11. Thus, by treating the vulcanization time that takes the longest time in the plurality of vulcanization stages 45, it is possible to increase the amount of treatment per unit time.

[0048]

As described above, the invention of claim 1 is formed so as to sandwich a pair of side part molds that come into contact with the side parts of a green tire during mold clamping and both side part molds during mold clamping. , Mold clamping and mold opening by moving the tread part mold abutting on the tread part of the green tire and the side part mold abutting on the side part of the green tire back and forth. This is a configuration having split mold cassette means provided with mold advancing and retracting means.

As a result, the side mold is clamped while being clamped by the tread mold, so that the tightening force is applied, so that the side mold is vulcanized during vulcanization molding of the green tire. Even when the pressing force in the mold opening direction is applied, the mold clamping of the side mold is not released. Therefore, since it is possible to generate the tightening force for the side part mold without using the frame, it is possible to form the frame required for the side part mold with small strength or to eliminate the need for the frame. The tire vulcanizer can be miniaturized.

According to the invention of claim 2, as described above, the tire vulcanizer of claim 1 further causes the processing required for vulcanization molding of the green tire in the split mold cassette means to be performed at a plurality of processing positions. As described above, the processing stage means for movably supporting the split mold cassette means is provided.

As a result, it becomes possible to arrange the mechanisms required for the vulcanization treatment and the take-out treatment, respectively, at different positions, and as in the case where the mechanisms for each treatment are concentrated in one place, the mechanisms are not separated from each other. Since it is not necessary to consider the operation, it is possible to simplify each mechanism and facilitate maintenance and inspection. Furthermore, when replacing the side mold or tread mold, etc., the split mold cassette means can be moved to the position where the replacement work is most easily performed, so the mold replacement time can be shortened and productivity can be improved. Has the effect of becoming.

According to the invention of claim 3, as described above, the tire vulcanizer according to claim 1 or 2 is further equipped with a bead portion seal capable of sealing the bead portion of the green tire mounted on the split mold cassette means. It is a structure having means.

As a result, since it becomes possible to directly supply pressure gas to the green tire to apply a pressing force, the bladder, which is a consumable item, becomes unnecessary, and the bladder is damaged during vulcanization molding. It is possible to prevent damage to the green tire and reduce the tire defect rate.

As described above, the invention according to claim 4 is such that the bead sealing means according to claim 3 holds the bead portion of the green tire in an airtight state, and a clamp for driving the bead clamp mechanism. The drive mechanism is separable from the drive mechanism, and the bead clamp mechanism is incorporated in the split mold cassette means.

As a result, since the bead clamp mechanism is incorporated in the split mold cassette means, it can be taken out integrally with various components such as the side mold of the split mold cassette means, and maintenance and inspection can be further facilitated. It becomes possible to do it easily. Furthermore, since the split mold cassette means can be freely moved to the place where the clamp drive mechanism is installed while the bead clamp mechanism and the green tire are attached, the vulcanization molding that requires the most time can be performed at multiple positions. By forming the stage means, it is possible to increase the processing amount per unit time.

[Brief description of drawings]

1 is a sectional view of the split mold cassette device of FIG. 2 taken along the line XX.

FIG. 2 is a plan view showing a split mold cassette device with a part thereof omitted.

FIG. 3 is a front view of a tire vulcanizer.

FIG. 4 is a plan view showing a split mold cassette device with a part thereof omitted.

FIG. 5 is a perspective view of a tire vulcanizer.

6 is a cross-sectional view of the tire vulcanizer of FIG. 1 taken along the line YY.

FIG. 7 is a vertical sectional view showing a tire vulcanizer with a part thereof omitted.

FIG. 8 is a vertical sectional view showing a tire vulcanizer with a part thereof omitted.

FIG. 9 is a vertical sectional view showing a tire vulcanizer with a part thereof omitted.

FIG. 10 is an explanatory view showing a processing stage of the tire vulcanizer.

FIG. 11 is an explanatory diagram showing a schematic configuration of a conventional tire vulcanizer.

FIG. 12 is an explanatory diagram showing a schematic configuration of a conventional tire vulcanizer.

FIG. 13 is an explanatory diagram showing a schematic configuration of a conventional tire vulcanizer.

[Explanation of symbols]

 1 frame 2 lower platen 3 lower mold 4 upper mold 5 upper platen 9 split mold cassette device 10 bladder center mechanism 11 green tire 12 bladder 13 lower bead ring 14 lower side ring 15 upper bead ring 16 upper side ring 17 tread mold 22 Gear Drive Mechanism 23 Drive Gear 32 Moving Carriage 35 Wheels 36 Top Member 38 Common Floor 39 Tire Extraction Stage 40 Vulcanization Molding Stage 41 Fixing Block 42 Block Lifting Cylinder 43 Cassette Fixing Mechanism 44 Tire Mounting Stage 45 Vulcanization Stage

Claims (4)

[Claims] 1. A pair of side part molds which come into contact with side parts of a green tire during mold clamping, and a tread part which is formed so as to sandwich both side molds during mold clamping and which comes into contact with the tread part of the green tire. A split mold cassette means comprising a mold and a mold advancing / retracting means for performing mold clamping and mold opening by advancing / retreating the tread part mold with respect to the side part mold abutting the side part of the green tire. A tire vulcanizer characterized by having. 2. The tire vulcanizer further movably supports the split mold cassette means so that the vulcanization molding of the green tire in the split mold cassette means can be performed at a plurality of processing positions. The tire vulcanizer according to claim 1, further comprising processing stage means for performing the treatment. 3. The tire vulcanizer further comprises a bead portion sealing means capable of sealing a bead portion of a green tire mounted on the split mold cassette means. 2. The tire vulcanizer described in 2. 4. The bead portion sealing means includes a bead clamp mechanism capable of sandwiching a bead portion of a green tire in an airtight state and a clamp driving mechanism for driving the bead clamp mechanism, which are separable from each other. 4. The tire vulcanizer according to claim 3, wherein the bead clamp mechanism is incorporated in the split mold cassette means.