JPH08192428A - Tire vulcanizing mold assembly - Google Patents

Abstract

PURPOSE: To prevent mold opening against the internal pressure of a tire by attaching one end part of a pressure device to a plate in a detachable manner and allowing an output rod to pierce through a plate part to attach the same to the other end part of the pressure device so as to bring the same into contact with a lower mold. CONSTITUTION: An upper side mold 100 is made relatively movable with respect to a plate 105 to which an outer ring 104 is connected. A lock ring 106 is attached to the flange 105a provided on the outer peripheral part of the plate 105 in a rotatable manner and the tooth form of the lower part 106a of a ring 106 can be engaged with the tooth form of the lower flange 107a of a lower plate 107. A lower side mold 101 is attached to a pressure plate 108 and the central cylindrical part 108a of the pressure plate 108 is guided in a liftable manner by the central part 107b of the lower plate 107. The rod part 113b of a pressure cylinder 113 passes through the through-hole 107b of the lower plate 107 at the time of extension to come into contact with the pressure plate 108 and does not prevent the movement of a tire vulcanizing mold assembly M at the time of drawing back.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire vulcanizing mold assembly applied to vulcanizing equipment for pneumatic tires mounted on automobiles and the like.

[0002]

2. Description of the Related Art In a conventional tire vulcanizing press, a reaction time of vulcanization performed by introducing a heating and pressurizing medium into the tire with a tire mold closed, and carrying in and shaping of an unvulcanized tire ( S
compared to the time taken to remove the vulcanized tire, the latter is much shorter, and therefore the mold opening / closing device for opening / closing the mold for tire loading / unloading and the tire unloading The operating rate of the input device is poor.

In order to improve the operation rate, improvement measures such as running the mold opening / closing device across a plurality of molds have been already proposed, but the mold generated by the pressure of the heating / pressurizing medium is opened. It is more expensive to prevent the mold from opening against the force that is being exerted, and for the mold opening / closing device running method, it is necessary to change the mold when changing the specifications of the vulcanized tires. It has not been put to practical use because there is a problem that it causes a waiting time and is accompanied by danger.

In order to remedy this problem, the applicant of the present invention uses a high-temperature and high-pressure heating and pressurizing medium (steam, steam + inert gas, or hot water) pressure introduced inside the tire during vulcanization of the tire, Split mold for tire vulcanization that cancels the force to open the tire mold inside the mold and does not need to be tightened from outside the mold so as not to open the tire mold during vulcanization An apparatus and a vulcanization facility to which the apparatus is applied have already been proposed (see Japanese Patent Application No. 6-122661).

This vulcanizing equipment will be described with reference to FIGS. 17 and 18. The vulcanizing station 1 (1a and 1b) has a plurality of tire vulcanizing molds M (Ma, Mb, Mc, ...).
A plurality of mold stands 5 (5a, 5b, 5c, ...
.), Each mold base 5 is provided with a mold moving means (for example, a pusher driven by a cylinder), which is not shown, and a heating / pressurizing medium replenishing means, a pipe, etc., if necessary.

Mold opening / closing station 2 (2a and 2b)
Is a mold opening / closing device 6 (6a and 6b) similar to a known tire vulcanizer (the difference will be described later), a known unloader 7 (7a and 7b) for discharging a vulcanized tire from the tire mold, A known loader 8 (8a and 8b) for loading an unvulcanized tire into a tire vulcanizing mold, and a vulcanized tire transporting conveyor 9 (9a and 9b), if necessary, for an unvulcanized tire A rack 10 (10a and 10b) and the like are provided.

The die carrier truck comprises a rail 4 fixed to the floor and a truck 3 (3a, 3b) guided by the rail 4 and driven by a drive unit (not shown).
The mold replacement station is a mold replacement table 11 for performing replacement of tread molds, sidewall molds, etc. in a mold for tire vulcanization accompanying the specification change of a tire to be vulcanized, and a bladder which is a consumable item. And a mold opening / closing means necessary for these replacement work.

Next, the split mold device for the tire vulcanizer will be described with reference to FIGS. 19 to 21. In FIG. 19, the unvulcanized tire T is loaded, the mold for tire vulcanization is closed, and the bladder B is closed. The heating and pressurizing medium is introduced into the inside of the tire T through the vulcanization to start the vulcanization. Reference numeral 101 denotes a substrate of the tire vulcanizing mold M, which is mounted on a frame 6e of the mold opening / closing device 6a so as to be slidable in the horizontal direction, and is a known locking device (not shown). ) By frame 6
It is fixed to e.

[0009] 103 is a substrate 1 through a hard heat insulating material 102
A lower disc fixed to 01 (in this example, a heating / pressurizing medium passage is provided to serve also as a heat plate, but a conventionally known heat plate independent of the lower disc 103 is provided below the lower disc 103. 105 is a lower sidewall type fixed to the lower disk 103, and 106 is a lower bead ring having an outer peripheral surface that engages with the circumferential cylindrical surface of the lower sidewall type 105. A lower end of the bladder B is sandwiched between a bladder retainer 107 bolted to the lower bead ring 106 and the lower bead ring 106. ing.

The cylindrical body 120 is formed on the substrate 1 as shown.
02, or may be fixed to the lower disc 103 or the independent heating plate below the lower disc. 109 is a tread type divided into a plurality in the circumferential direction, and when closed, the outer peripheral surface forms a practical conical surface, and the pressure receiving plate 104 fixed on the flange 103b formed on the outer peripheral portion of the lower disk 103 is mounted on the pressure receiving plate 104. A tread mold 109 is bolted to the inner peripheral surface of the slidable segment 110.

Reference numeral 111 denotes an outer ring having a conical surface which is engaged with the outer peripheral surface of the segment 110 on the inner peripheral portion thereof. The outer ring 111 has a T groove 110a formed vertically on the conical outer peripheral surface of the segment 110. A T-bar 111a that is engaged and slidable is fixed to the inner peripheral conical surface of the outer ring 111. In addition, the slide guide 115 is slidably attached to the plurality of arms 114a extending in the radial direction on the outer peripheral portion of the upper disc 114 in the radial direction.
It is fixed to the upper surface of 10, and when the upper disk 114 and the outer ring 111 move up and down relatively in the axial direction, the tread mold 109 moves in the radial direction via the segment 110, and is expanded and contracted. When the tread mold 109 is closed, the claws 110b and 110c formed on the upper end and the lower end of the segment 110 have upper disc 114 and lower disc 103, respectively.
Engaging with the claws 114b and 103a formed on the outer peripheral portion of the claw 110b and the claw 110b and the claw 1 when the tread mold 109 is opened.
The engagement between 14b and 110c and the claw 103a is released.

Reference numeral 113 denotes an upper disc 114 (in this example, a heating and pressurizing medium passage is provided to serve also as a heating plate.
A known hot plate independent from 14 may be attached to the upper side of the upper disc 114).
Is an upper bead ring bolted to the upper sidewall mold 113. A center post 121 is vertically slidably (slidingly) inserted into the cylindrical body 120, a bush 122 is integrally attached to a lower end portion of the center post 121, and an outer peripheral surface thereof slides on an inner peripheral surface of the cylindrical body 120. It is inserted into the upper end of the cylindrical body 120 and the inner peripheral surface is the center post 12.
1 is a packing that slides 1 and 124 is a retainer for the packing 123. A recess 121a formed in the lower end of the center post 121 has an automatic connecting means attached to the tip of a rod of a center post lifting cylinder (not shown). Is inserted, and the cap 12 is attached to the upper end of the center post 121.
5 is fixed by a pin 126.

Reference numeral 118 denotes a flange bolted to the cap 125, 117 denotes a bladder retainer bolted to the flange 118, and the outer peripheral portion of the flange 118 and the bladder retainer 11
The upper end of the bladder B is sandwiched between the bladder B and the bladder 7, and both ends of the bladder B are moved toward and away from each other by the operation of the center post lifting cylinder. A nozzle ring 127 having a plurality of nozzles 127a for introducing the heating / pressurizing medium into the tire T via the bladder B is fixed to the cylindrical body 120, and the heating / pressurizing medium passage 1 communicating with the nozzle 127a is fixed.
20c and a heating / pressurizing medium discharge passage 120d are formed, and quick couplers 128 and 129 with check valves for connecting these passages 120c and 120d to the mold device outer pipe are outlets of these passages 120c and 120d. It is attached to the section.

Reference numeral 130 denotes a cover plate, and the outer peripheral portion of the cover plate 130 is bolted to the outer ring 111 via the spacer ring 112 and the hard heat insulating material 131. Spacers 132, 119a, 119b, and 119c fixed to the upper disc 114 are soft heat insulating materials. The means for locking the upper disc 114 and the cover plate 130 is the inner ring 13 bolted to the upper disc 114.
8 and the bush 133 on the inner periphery of the cover plate 130.
A plurality of outer rings 134 rotatably assembled with each other, and a plurality of outer rings 134 which are formed on the inner circumference of the outer ring 134 and the outer circumference of the inner ring 138 and which can be engaged or passed in the axial direction depending on the rotation angle of the outer ring 134. It is composed of a pair of claws 134a and 138a and a swinging / rotating device described later.

Reference numeral 136 is a retaining member fixed to the outer ring 134. 20 and 21 is an arm 6c that is assembled so as to be capable of moving up and down (sliding) on the column of the mold opening / closing device 6a.
With the bolster plate fixed to, the elevator cylinder 6d moves up and down. 141 is a bolster plate 14
0 is a known attaching / detaching device for attaching / detaching the cover plate 130, 135 is a pusher fixed to the bolster plate 140, 142 is a plurality of rods whose one end is fixed to the bolster plate 140, and 143 is a metal bolted to the other end of the rod 142. A mold opening / closing cylinder, 144 is an extension rod fixed to the tip of the rod 143a of the mold opening / closing cylinder 143, 146 is a sleeve rotatably (slidingly) attached to the extension rod 144, and 145 is screwed into the upper end of the sleeve 146. Bush.

The connecting means for connecting the mold opening / closing cylinder 143 and the upper disc 114 is an extension rod 144,
Bush 145, sleeve 146, and inner ring 138
Connecting rod 139 integrally attached to the
It is composed of a plurality of pairs of claws 139a, 146b which are formed on the upper part of the outer periphery of 39 and the lower part of the inner periphery of the sleeve 146 and which can be engaged or passed in the axial direction depending on the rotation angle of the sleeve 146.

Reference numeral 148 denotes a lever, which has a fork-shaped tip and is rotatably assembled to the bolster plate 140 via a pin 149. The lever 148 is provided between the other end of the lever 148 and the bolster plate 140. Has
The cylinder 150 is assembled, and the cylinder 150
Is operated, the lever 148 swings around the pin 149.

A rod 147 is fixed to an arm 146c extending outward from the sleeve 146.
Are parallel to the sleeve 146. And the same rod 14
7 is inserted in a U-shaped groove formed in the tip fork of the lever 148, the tip of the arm 137 is inserted in a key groove 146a formed in the outer periphery of the sleeve 146 parallel to the axis, and the arm 137 is inserted into the outer ring 134. The cylinder 150 is operated, and the lever 148 swings to rotate the sleeve 146. At the same time, the sleeve 146 is rotated, and the outer ring 134 is connected via the sleeve 146 and the arm 137.
Also rotates.

By this rotation, when the set of claws 134a and 138a is in the engaged state, the set of claws 139a and 146b can pass (released state), and the claws 134a and 138a can be passed.
Claws 139 when the pair of is ready to pass (released state)
The set of a and 146b is brought into an engaged state.
Further, when the pusher 135 is in a state in which the attaching / detaching device 141 of the bolster plate 140 and the cover plate 130 are in contact with each other, the pusher 135 is not covered by the cover plate 13.
The inner peripheral portion of 0 is pushed down to elastically deform and hit the spacer 132 fixed to the upper disc 114,
The amount of deformation is regulated.

When the outer ring 134 is rotated, the claw 134a on the inner peripheral portion of the outer ring 134 and the inner ring 1
38 has a clearance in the height direction of the outer peripheral claws 138a and can be easily rotated, while rotating the outer peripheral claws 138a and the claws 13a and 13a.
8a, and then the bolster plate 140 is moved upward so that the claws 134a and the claws 138a are raised.
When and abut, most of the downward displacement of the cover plate 130 remains, and the cover plate 130 acts as a spring body to internally offset the relative movement of the outer ring 111, the segment 110, and the upper disc 114. It is supposed to do.

That is, the internal pressure inside the tire generates a force in the radial direction of the tread mold 109 and the segment 110, and this force is converted into an upward force by the inclined surface of the outer ring 111, and the outer ring 111 is segmented by the segment 110. The downward elastic deformation force of the cover plate 130 prevents the upward movement of the cover plate 130.

The operation of the tire vulcanizing facility and the tire vulcanizer split mold device shown in FIGS. 17 to 21 is as follows. 19 and 21 show that the tire vulcanization is completed in the tire vulcanization mold Ma that was on the mold base 5a of the vulcanization station 1a, and the tire vulcanization mold Ma is moved by the mold carrier 3a. Is the mold opening / closing device 6a of the mold opening / closing station 2a
It shows the state that it has been carried in.

At this time, the set of claws 134a, 138a is
In the engaged state, the set of claws 139a and 146b is in a passable state. From this state, the cylinder 6d is first operated to lower the arm 6c, and the attaching / detaching device 141 is used to move the cover plate 130 and the bolster plate 140.
And the pusher 135.
Deforms the cover plate 130 downward, and the claw 134a
A gap is formed between the engaging surfaces of the claw 138a and the claw 138a. Further, the heating / pressurizing medium passages 120c and 120d are connected to the quick coupler 128,
It is connected to a die outside pipe (not shown) via 129.

Then, a switching valve (not shown) is operated,
When the heating and pressurizing medium in the tire T is discharged and it is confirmed that the pressure in the tire T has sufficiently dropped, the cylinder 150 is operated and the pair of the claws 139a and 146b are engaged, and the upper disk 114 and The lock is released by connecting the rod 143 of the cylinder 143 and making the set of the claws 134a, 138a passable.

Then, as is well known, the cylinder 143 is operated in the pushing direction of the upper disc 114 and the cylinder 6d is operated in the raising direction of the bolster plate 140. Then, the tread mold 109 is peeled off from the tire T, the diameter is expanded, and the claw 110b and the claw 114 are formed.
b, the engagement between the claw 103a and the claw 110c is released, and the bolster plate 140 is further raised to move the cylinder 14
3 reaches the stroke end, the claws 139a, 146
Since b is engaged, the upper disc 114 is pulled up and the tire vulcanizing mold is opened.

Then, the vulcanized tire T is carried out of the tire vulcanizing mold, the tire to be vulcanized next is carried in, and then the cylinder 6d is operated in the reverse direction to make the tire vulcanizing metal. Close the mold. Then, first, the segment 110 suspended from the upper disc 114 comes into contact with the pressure receiving plate 104, and while the cylinder 143 is pushed back from there, the outer cylinder 110 descends via the bolster plate 140, and the tread mold 109 contracts. The tire vulcanizing mold is closed, and the pusher 135 further bends the cover plate 130 downward.

During this time, shaping pressure gas is introduced into the inside of the tire T, and at the final stage of the diameter reduction of the tread mold 109, the claw 110b and the claw 114b, and the claw 103a and the claw 110c.
And are engaged. Thus, the tire vulcanizing mold is completely closed, the operation of the cylinder 143 is stopped, and the cylinder 150 is operated in the reverse direction, whereby the claws 134a and 138a are operated.
Of the claws 139a, 146 while the cover plate 130 and the upper disc 114 are locked with each other.
The bolster plate 14 is made to be able to pass the group of b.
0 rises, and the claw 134a and the claw 138a engage and abut. Then, a heating and pressurizing medium is introduced inside the tire,
Enter the vulcanization process.

At this time, the force for separating the sidewall molds 105, 113 by the pressure of the heating and pressurizing medium is the upper disk 114, the claws 114b, 110b, the segment 110, the claws 110c, 103a, the lower disk 103. Are offset in the mold device via. Further, the radial force for expanding the diameter of the tread mold 109 is canceled in the outer ring 111 via the segment 110, and is generated by the sliding inclined surface interposed between the segment 110 and the outer ring 111. Vertical component of radial force,
That is, the force that lifts the outer ring 111 is the spacer ring 112, the hard heat insulating material 131, the elastic restoring force of the cover plate 130 and the cover plate 130, the outer ring 134, the claws 134a and 138a, the inner ring 138, and the upper circle. It is canceled in the mold device through the plate 114 and the claws 114b and 110b.

Therefore, it is no longer necessary to press the mold device by the external force via the bolster plate 140, the detaching device 141 is released, the cylinder 6d is operated, and the arm 6c is lifted. Proceed to move the mold system to a predetermined position in the vulcanization station and continue vulcanization.

[0030]

The tire vulcanization facility is premised on the use of a split mold device (commonly called a sectional mold container or a segmental mold container). Further, it is premised on using the self-locking split mold device illustrated in FIG. 10 which the applicant of the present invention has already proposed.

The tire vulcanizing equipment itself has remarkable effects on space saving, reduction of manufacturing cost, automation of factories and the like. And although the conventional tire vulcanization mold (the tire vulcanization mold to be used by assembling it in the sectional mold container) can be used as it is, it is necessary to newly prepare a split mold device, which is a more economical vulcanization facility. There is inconvenience from the viewpoint.

The present invention is proposed in view of the above problems, and the object thereof is to use it in the tire vulcanizing equipment already proposed by the applicant of the present invention, to automate the replacement work, and to improve the tire internal pressure. Another object of the present invention is to provide a tire vulcanizing mold assembly that can prevent the mold opening.

[0033]

In order to achieve the above object, the present invention provides an upper flange provided on an outer peripheral portion of an upper mold of a tire vulcanizing mold or an outer peripheral portion of a plate for mounting the upper mold. Upper flange, a lower flange provided on the outer periphery of a plate on which the lower die can be assembled vertically, and a lock ring rotatably assembled on one of the above flanges and detachably engaged on the other flange. In a tire vulcanizing mold assembly having and, one end of a pressurizing device is detachably attached to the plate, and an output rod penetrates the plate part to the other end of the pressurizing device and the lower mold. So that the tire vulcanization mold is closed and the flanges are connected by the lock ring, the mold opening force due to the internal pressure of the tire vulcanization mold is sealed. It is constructed (claim 1).

The tire vulcanizing mold assembly according to claim 1 may be provided with a protrusion provided on the lock ring and a rotation drive mechanism for the lock ring which is attachable to and detachable from the protrusion (claim). Item 2). The tire vulcanizing mold assembly according to claim 1, further comprising: a pedestal on which the tire vulcanizing mold assembly is installed, and an elastic support member that supports the pressing device on the pedestal. (Claim 3).

Further, according to the present invention, an upper flange provided on an outer peripheral portion of an upper mold of a tire vulcanizing mold or an upper flange provided on an outer peripheral portion of a plate for mounting the upper mold, and a plate for assembling a lower mold so as to be able to move up and down. In a tire vulcanizing mold assembly having a lower flange provided on the outer peripheral portion of the flange, and a lock ring rotatably assembled to one of the flanges and detachably engaged with the other flange, A pressurizing device for pressurizing the plate and the lower mold in a separating direction and a driving device for the pressurizing device are provided (claim 4).

Further, according to the present invention, an upper flange provided on an outer peripheral portion of an upper die of a tire vulcanizing die or an upper flange provided on an outer peripheral portion of a plate to which the upper die is attached, and a plate for assembling a lower die so as to be able to move up and down. In a tire vulcanizing mold assembly having a lower flange provided on the outer peripheral portion of the flange, and a lock ring rotatably assembled to one of the flanges and detachably engaged with the other flange, A spring assembly for urging the plate and the lower mold in a separating direction is provided (Claim 5).

In the tire vulcanizing mold assembly according to the fourth aspect, one end of a pressurizing device is detachably attached to the plate, and an output rod penetrates the plate part at the other end of the pressurizing device. Then, the tire vulcanization mold may be pressed and closed by the pressurizing device when it is attached so as to abut the lower mold, and when the respective flanges are connected by the lock ring. 6).

In the tire vulcanizing mold assembly according to claim 4, a pressure piston plate is provided on the plate so as to be able to move up and down, and a pressure chamber is formed in the plate directly below the pressure piston plate. A check valve may be provided at the pressure fluid supply port to the pressurizing chamber, and the tire vulcanizing mold may be pressed and closed by the pressurizing device when the flanges are connected by the lock ring. (Claim 7).

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) Next, a tire vulcanizing mold assembly of the present invention will be described with reference to a first embodiment shown in FIGS. FIG.
[Fig. 3] is a plan view of a tire vulcanizing facility to which the tire vulcanizing mold assembly of the first embodiment is applied.

FIG. 2 is a side view taken along the line aa of FIG. FIG. 3 is a side view of the tire vulcanizing mold assembly of the present invention (a tire vulcanizing mold assembly of a type commonly referred to as a section having a built-in sectional mold container) (first embodiment) as seen from the direction of arrow A in FIG. 3, the left half shows the state when the tire T is vulcanized through the bladder B by the pressurizing device, and the right half shows the replacement of the mold or the bladder. It shows a state when the mold assembly is moved for replacement or the like.

FIG. 4 is a plan view of the tire vulcanizing mold assembly of FIG. 3, with a part cut away. FIG. 5 is a vertical cross-sectional side view of the tire vulcanizing mold assembly of the present invention (a tire vulcanizing mold assembly having a built-in two-piece mold or two-piece mold) viewed from the direction of arrow A in FIG. 5, the left half shows the state when the tire T is vulcanized through the bladder B by being pressurized by the pressure device, and the right half is
It shows a state when the tire vulcanizing mold assembly is moved due to replacement of a mold or a bladder.

The central mechanism for bladder operation has been omitted because it has been described in detail in the above-mentioned (2) split mold device for tire vulcanization already proposed by the present applicant. The split mold opening / closing device mechanism has also been omitted since it has been described in detail in the above (2) Split mold device for tire vulcanization. First, the entire tire vulcanizing equipment will be described with reference to FIGS. 1 and 2, 1 is a base in which a pressurizing device and a central mechanism for operating a bladder are installed, and M
(M ₁ , M ₂ ...) Are a plurality of sets of tire vulcanizing dies installed on the upper surface of the base 1, 2 are tracks installed in parallel on each tire vulcanizing mold M, and the same track 2 is the base. It is fixed to the upper surface of 1.

A mold opening / closing device 3 which runs on the track 2
Reference numeral 0 is a running frame of the mold opening / closing device 3, 24 is a mold lifting cylinder fixed to the running frame 20, and the lower end of the piston rod of the mold lifting cylinder 24 is the running frame 2
It is fixed to an arm 21 that can be moved up and down to 0, and an upper center mechanism 23 is installed in the arm 21 and a mold attaching / detaching device 22 is attached.

An unloader 4 traveling on the track 2 4a
The arm 4b is a tire gripping mechanism assembled to the tip of the arm 4a, and the arm 4a is attached to the traveling frame of the unloader 4 so as to be vertically movable and swingable. The unloader 4 is the same as a known unloader except that it travels on the track 2. Reference numeral 5 denotes a loader traveling on the track 2, 5a denotes an arm, and 5b denotes a tire gripping mechanism assembled to a tip portion of the arm 5a. The arm 5a is attached to a traveling frame of the loader 5 so as to be vertically movable and swingable. ing.
The loader 5 is the same as a known loader except that it runs on the track 2.

In this embodiment, the track 2 is shared by the mold opening / closing device 3, the unloader 4 and the loader 5.
May be dedicated. 6 is an unvulcanized tire supply device described in detail in the tire vulcanization equipment already proposed by the applicant, and 7 is a vulcanized tire grip expansion and cooling device (PCI) in which an air switching valve for tire inflation is installed. Base, P (P ₁ ,
P ₂ ...) is a plurality of vulcanized tire grip expansion / cooling devices removably attached to the vulcanized tire grip expansion / cooling device base 7.
(P ₁ , P ₂ ...) Is similar to the known vulcanized tire grip expansion and cooling device, except that it is removably attached to the base 7.

Reference numeral 8 is a track fixed to the base 7, 9 is an unloader for a vulcanized tire grip expansion and cooling device which runs on the track 8, 10 is a running frame of the unloader 9, and one side surface of the running frame 10 is provided. The lock housing lifting device 10a is mounted so as to be liftable, the lock housing lifting device 10b is mounted at the tip of the lock housing lifting device 10a, and the arm 10c can be lifted on the other side surface of the traveling frame 10. And is swingably attached to the end of the arm 10c.
d is attached. 11 is a belt conveyor for delivering vulcanized tires, and 12 is a vulcanized tire gripping expansion cooling device P
It is a ring storage device used in (P ₁ , P ₂ ...).

Next, the tire vulcanizing mold assembly will be described in detail with reference to FIGS. Split mold device, upper side mold 1
00, a lower side mold 101, a divided tread mold 102, a segment 103 to which the tread mold 102 is attached, and an outer ring 104 that allows the segment 103 to swing.

The upper side mold 100 is a plate 10
5 is movable up and down relatively to 5, and is driven by an upper central mechanism 23 which is schematically shown. The outer ring 104 is connected to the plate 105 with bolts or the like. A flange 105a is provided on the outer peripheral portion of the plate 105. A lock ring 106 is rotatably attached to the flange 105a, and a lower portion 106a of the ring 106 has a tooth profile so that it can be engaged with a tooth profile of a lower flange 107a of a lower plate 107.

The lower plate 107 is guided by rollers 115 and 116 provided on the base 1 and fixed to the base 1 at a predetermined position by a known fixing device (not shown). The lower side mold 101 is attached to the pressure plate 108, and the central cylinder portion 1 of the pressure plate 108 is attached.
08a is guided by a central portion 107b of the lower plate 107 so as to be able to move up and down. Further, a rod 109 vertically installed at a proper position of the pressure plate 108 is incorporated via a spring 110 so as to pull the pressure plate 108 downward.

Further, the lower plate 107 and the pressure plate 10
8 is provided with a stopper 111, and the stopper 111 regulates the downward movement by the rod 109 to an appropriate amount. The appropriate amount is an amount that provides the minimum clearance required to rotate the lock ring 106 when the pressure plate 108 descends and is placed on the stopper 111. Of course, this amount is determined in consideration of the amount of thermal expansion of the die to be installed.

At a proper place on the lower surface of the lower plate 107, T
A block 112 having a V-shaped groove is provided, and the block 112 is detachable from the upper flange 113a of the pressure cylinder 113. The T-shaped groove of the block 112 is oriented so that the pressure cylinder 113 does not become an obstacle when the tire vulcanizing mold assembly M moves.

The rod portion 113 of the pressure cylinder 113
b is a through hole 107 of the lower plate 107 when extended.
The tire vulcanization mold assembly is prevented from moving while passing through b and contacting the pressure plate 108 and at the time of retracting. The lower end of the pressure cylinder 113 is supported on the base 1 by an elastic body 114 such as a spring.

With such a structure, the pressure cylinder 1
When the entire rod 113b of 13 is retracted,
The pressurizing cylinder 113 does not block the movement of the tire vulcanizing mold assembly as in the right half of FIG. When the mold is pressed, the reaction force is transmitted to the flange 113a → the block 112 → the lower plate 107, and if the lock ring 106 is in the connected state, the internally mounted mold is pressed and closed.

A protruding arm 106a is provided at an appropriate position of the lock ring 106, and a roller 106b is provided at a tip portion of the arm 106a. Further, a block 118 movable by a cylinder 117 is provided at an appropriate position on the base 1 side, and a roller 106b is fitted in a concave portion of the block 118. Therefore, the roller 106b of the lock ring 106 of the tire vulcanization mold assembly M guided and entered by the roller 115 can be engaged with the block 118, and if the cylinder 117 is driven in the engaged state, the roller 106b is moved. The ring 106 rotates through
The tooth profile 106a of the ring and the tooth profile 107a of the lower plate can be engaged and disengaged.

Next, the operation of the tire vulcanizing mold assembly will be specifically described. (1) The tire vulcanizing mold assembly M is transported from a mold exchanging place (not shown) to the tire vulcanizing equipment by a known method. (2) At this time, the output shaft of the pressurizing cylinder (pressurizing device) 113 at the place where the tire vulcanizing mold assembly M is installed is completely retracted. Further, the engagement portion is also in a state of being conveniently floated for the tire vulcanization mold assembly M to enter (see the right half portion of FIG. 3) (FIG. 5).
See the right half)). (3) The tire vulcanizing mold assembly M is stopped at a predetermined position,
It is fixed by a known method. At this time, lock ring 1
The 06 rotary drive also engages (see FIG. 4). (4) The mold opening / closing device 3 moves to the position of the tire vulcanization mold assembly M that has been received and is connected to the tire vulcanization mold assembly M, and the rotation drive mechanism of the lock ring 106 acts to cause the tire vulcanization mold assembly M to move. Is ready to open. (5) Next, the tire vulcanization mold assembly M is opened, raw tires are supplied, and the tire vulcanization mold assembly M is closed. (6) The lock ring 106 is connected, the output shaft of the pressurizing cylinder 113 operates in the extending direction, the tire vulcanizing mold assembly M is pressed, and the pressurizing cylinder 11 is pressed.
The engaging part of 3 is also in the engaged state (see the left half of FIG. 3)
(See the left half of FIG. 5), the tire vulcanizing mold assembly M is pressed and closed. (7) When the pressing by the pressurizing cylinder 113 is started,
The mold opening / closing device 3 releases the connection, moves to another mold position, and performs a predetermined work. After that, it is returned to the mold position at an appropriate time. (8) When the vulcanization is completed, the output shaft of the pressurizing cylinder 113 is slightly retracted even in the pressurized state, the pressing and closing of the tire vulcanizing mold assembly M are released, and the lock ring 106 rotates. It is enabled. (9) The lock ring 106 is rotated and connected to the mold opening / closing device 3, the tire vulcanizing mold assembly M is opened, and the removal of the finished tire and the supply of the raw tire are sequentially performed. (10) After supplying the raw tire, the tire vulcanizing mold assembly M is closed, the lock ring 106 is reconnected, and the output shaft of the pressurizing cylinder 113 is set in the extending direction.
While pressing the tire vulcanizing mold assembly M, the engaging portion of the pressure cylinder 113 is also brought into the engaged state, and the tire vulcanizing mold assembly M is pressed and closed.

Thereafter, the same operation is repeated, and when the tire vulcanizing mold assembly M or the bladder is replaced, the output shaft of the pressurizing cylinder 113 is completely pulled in, removed, and transported. The operation of the tire vulcanizing mold assembly shown in FIG. 5 (a tire vulcanizing mold assembly commonly referred to as a two-piece mold or a two-piece mold built-in type) is exactly the same, so a detailed description thereof will be omitted.

According to the above tire vulcanizing mold assembly,
(1) The conventional tire vulcanizing mold can be used in the tire vulcanizing equipment that the applicant of the present invention has already proposed, without preparing a new split mold device. (2) When removing and moving from the tire vulcanization position for mold replacement or bladder replacement,
There is an advantage that the drive device and the pressurizing device of the lock ring are automatically decoupled and the replacement work is automated.

(Second to Fourth Embodiments) Next, a tire vulcanizing mold assembly of the present invention will be described as a second embodiment shown in FIGS. 6 to 10, a third embodiment shown in FIG. ~ It demonstrates by the 4th Embodiment shown in FIG. FIG. 6 is a plan view showing an example of a tire vulcanizing facility to which the tire vulcanizing mold assembly of the second embodiment is applied.

FIG. 7 is a side view taken along the line aa in FIG. FIG. 8 is a second view of the tire vulcanizing mold assembly of the present invention.
In the vertical sectional side view showing the embodiment, the left half shows a state during vulcanization in which a predetermined mold clamping force is applied to the tire vulcanization mold assembly, and the right half is a mold opening / closing unit by a mold opening / closing device. The state immediately after closing and before starting the predetermined mold clamping is shown.

FIG. 9 is a plan view of the tire vulcanizing mold assembly. FIG. 10 is a system diagram of the pressurization control device P of FIG. FIG. 11 is a vertical sectional side view showing a third embodiment of the tire vulcanizing mold assembly of the present invention. FIG. 12 is a vertical sectional side view showing a fourth embodiment of the tire vulcanizing mold assembly of the present invention.

FIG. 13 is a plan view showing the lock ring actuating mechanism of the fourth embodiment. FIG. 14 is a vertical cross-sectional side view showing a split mold operating device of the mold opening / closing device of the fourth embodiment. FIG. 15 is a vertical cross-sectional side view showing a pressure fluid supply / discharge device for the pressurizing chamber of the pressurizing piston plate of the fourth embodiment.

FIG. 16 is a vertical sectional side view showing an open state of the check valve of the pressure fluid supply / discharge device of FIG. First, the entire tire vulcanizing equipment will be described with reference to FIGS. The vulcanization station 1 ′ (1 a ′ and 1 b ′) has a plurality of mold stands 5 ′ (5 a ′, 5 b ′) for mounting a plurality of tire vulcanization molds (Ma, Mb, Mc, ...). 5c ', ...),
Each mold table 5 is provided with mold moving means (for example, a pusher driven by a cylinder) (not shown), heating / pressurizing medium replenishing means, piping, etc., if necessary.

Mold opening / closing station 2 '(2a' and 2
b ′) is a mold opening / closing device 6 ′ (6a ′, 6b ′) similar to a known tire vulcanizer, a known unloader 7a ′ that carries out a vulcanized tire from the tire vulcanizing mold, and a tire. It comprises a known loader 8a 'that carries unvulcanized tires into a vulcanizing mold, and if necessary, a vulcanized tire conveying conveyor 9
a ', an unvulcanized tire rack 10a', etc. are provided.

The mold carrier is equipped with a rail 4'fixed to the floor and driving means (not shown) guided by the rail 4 '.
It is composed of a known trolley 3 '(3a' and 3b ') that travels according to, and the mold changing station is a tread type, a sidewall type, etc. in the tire vulcanizing mold accompanying the specification change of the tire to be vulcanized. And a mold change table 11 'for changing a bladder, which is a consumable item, and the like. If necessary, a tire vulcanization mold preheating chamber may be attached. In addition, the mold replacement table 11 'is simply used as a temporary stand for tire vulcanizing molds or a tire vulcanizing mold preheating chamber, and is transported to another place by a tire vulcanizing mold forklift or the like to replace the parts in the molds. It may be performed.

Next, the tire vulcanizing mold assembly of the present invention (second
Embodiment) will be described with reference to FIGS. The lower mold 222 of FIG. 8 is fixed to the pressure plate 225 by a known method. A lower plate 226 guides a central cylindrical portion 225a of the pressure plate 225 so that the central cylindrical portion 225a can be moved up and down by an inner peripheral portion 226a.

The outer peripheral flange 226b of the lower plate 226 is a toothed flange and is engageable with the toothed flange of the lower end 224a of the lock ring. There is a stopper 227 between the lower plate 226 and the pressure plate 225, and a rod 230a of a pressure cylinder 230 provided on the lower plate 226 by a plurality of rods 228 hanging from the pressure plate 225 and a spring 229. The pressure plate 225 is rested on the stopper 227 when is retracted.

With such a structure, the mold opening / closing device 22 is inserted while the bladder B is inserted into the tire T by a known procedure.
When the mold is closed by 6, the flange 223a and the flange 2
26b, a gap is formed between the lock ring 224 and the flange 226b as shown in the right half of FIG. 8 to allow the lock ring 224 to rotate. When the height of the stopper 227 reaches an appropriate height, the
The gap between the mating portions of the upper mold 221 and the lower mold 222 of the split mold becomes an appropriate amount, the lock ring 226 is locked by a known method, and then the rod 230a of the pressure cylinder 230 operates in the extension direction. Then, the mold 221,
There is no gap between the mating parts of 222 and the mold 22
1, 222 are pressed to a desired mold clamping force.

Then, when a high temperature / high pressure medium is introduced into the tire T through the bladder B, vulcanization is started. The mold clamping action of the pressure cylinder 230 is as follows. The members 221 to 230 are mounted on the base plate 232 via the spacers 231 at appropriate positions of the lower plate 226, and the pressure control device P is provided at appropriate positions on the base plate 232. The pressurizing control device P and the pressurizing cylinder 230 are connected by a pipe 233.

Next, the pressure control device P will be described with reference to FIG. Reference numeral 240 denotes an air-hydraulic pressure conversion device, which is a publicly-known device that generates high-pressure oil pressure by reciprocating movement by air pressure, and is operated by an air receiver 241, a pilot check valve 242, and a mechanical valve 243. 244 is a pilot check valve, which is the mechanical valve 243 and the pneumatic-hydraulic converter 24.
Driven by 5.

Reference numeral 246 is an oil tank, and 247 is a quick coupler type check valve used when replenishing the drive air to the air receiver 241. Numeral 248 is a die opening / closing station 2 ′, which is a pipe connected to the check valve 247 and a push rod 249 for driving the mechanical valve 243.
(2a ', 2b') or mold carrier 3 '(3
a ', 3b') or vulcanization station 5 '(5a',
5b ', 5c').

The operation of the pressurizing control device P will be described by taking an example in which the rod 249 and the pipe 248 are provided at the mold opening / closing station 2'position. While performing the mold operation by the mold opening / closing device, the push rod 249 is lifted up, the check valve 244 is opened by the hydraulic pressure generated by the converter 245, and the rod 22 of the tire vulcanizing mold assembly is opened.
8, the oil in the cylinder 230 is moved to the valve 244 by the spring 229.
And is returned to the tank 246 via, and as a result, the rod 230a of the cylinder 230 is retracted.

When the mold closing is completed and the lock ring 224 is locked by a known method, the rod 24 is locked.
9 is retracted, the valve 243 is switched, and the valve 244
Is closed, the valve 242 is opened, the air-hydraulic converter 240 is operated by the air stored in the air receiver 241, the cylinder 230 is pressurized, and the mold is pressed with a predetermined mold clamping force,
Will be closed.

The air pressure source can be supplemented to the air receiver 241 by ascending and connecting the pipe 248 at a required time. Next, the tire vulcanizing mold assembly (third embodiment) shown in FIG. 11 will be described. Regarding the same parts as the tire vulcanizing mold assembly (second embodiment) shown in FIG. 8, only the respective names are described. 221 is an upper mold, 222 is a lower mold,
223 is an upper plate, 223a is a flange, 224 is a lock ring, 224a is a flange, 225 is a pressure plate,
225a is a central tube, 226 is a lower plate, 226a
Is a central hole, 226b is a flange, 250 is the pressure plate 2
A plurality of rods hanging from the pressure plate 225.
A spring 251 is interposed between the lower plate 226 and the lower plate 226 so as to separate them from each other. The output of the spring 251 is an output that sufficiently overcomes the initial pressure immediately after the mold is closed and is supplied into the tire T.

A through hole 226c and a block 226d having a T-shaped groove are provided at appropriate places on the lower plate 226. Spring 2 on the mold base 205 of the vulcanization station
The upper flange 205c of the pressurizing cylinder 205b supported via 05a can be engaged with the T-shaped groove.

Therefore, when the molds 221 and 222 are pressed and closed by the spring 251, and transferred to the guide rollers 205d and 205e on the mold base 205 via the guide rollers 203b and 203c on the carriage 203a, The rod 205f of the cylinder 205b is completely retracted,
Since the flange portion 205c can pass through the T groove by the spring 205a, the die cannot be prevented from entering.

If the cylinder rod 205f is extended after the die has stopped at a predetermined position, the cylinder rod 205
f contacts the pressure plate 225, the cylinder 205b then crushes the spring 205a and descends, the flange portion 205c engages with the block 226d, and the molds 221 and 222 are tightened to a predetermined mold clamping force. When the vulcanization is completed, the rod 205f is retracted by releasing the pressure of the pressure cylinder 205b, the engagement between the flange 205c and the block 226d is released, and the mold can be moved.

Next, the tire vulcanizing mold assembly (fourth embodiment) shown in FIGS. 12 to 16 will be described. In FIG. 12, the mold is closed at the mold opening / closing station, the lower mold is pressed by the pressing force from below, and this pressing force overcomes the mold opening force generated by the heating / pressurizing medium in the tire. It shows a state where the tire vulcanizing mold assembly is clamped and held (only the right half).

Since the tire vulcanizing equipment to which the tire vulcanizing mold assembly of the present invention is applied has almost the same structure as the conventional tire vulcanizing equipment shown in FIGS. 17 and 18, a detailed description will be given. Will be omitted, and only the portions that have been modified to use the present vulcanizing mold assembly will be described with reference to FIGS. Reference numeral 200 denotes a conventionally known split mold device, which is a split mold device 2
00 is a tread mold 200a and an upper side mold 200
b, a lower side mold 200c, a segment 200d for mounting a tread mold, an outer ring 200e,
Top plate 200 for mounting upper side mold 200b
f, a bottom plate 200g to which the lower side mold 200c is attached, and a bayonet rod 200h to be attached to the central portion of the top plate 200f.

T is a tire and B is a bladder. The bladder operating device 201 operates the bladder B and supplies the heating and pressurizing medium into the tire.
It is attached to 2. The lower heating plate 202 is a heat insulating material 20.
It is attached to the (doughnut type) pressurizing piston plate 204 through 3. A pressurizing chamber 205a is formed in the lower plate 205 immediately below the pressurizing piston plate 204, and seal members 206 and 207 are interposed between the pressurizing piston plate 204 and the lower plate 205. Pressure fluid is supplied or negative pressure is applied through the check valve 206 mounted at a proper position, so that the pressure piston plate 2
04 moves up and down.

A stopper 208 that regulates the amount of upward movement of the pressure piston plate 204 is provided on the outer peripheral portion of the lower plate 205, and a plurality of claws are provided on the outer peripheral flange 205b. An upper heating plate 209 is provided above the outer ring 200e and the top plate 200f.
Thus, the outer ring 200e is fixed.

The upper heating plate 209 is fixed to the upper plate 211 via a heat insulating material 210. Upper plate 2
11, the outer peripheral flange 211c has a sliding member 211a,
There is 211b, and the lock ring 212 is rotatably supported. The lower end of the lock ring 212 is provided with a claw 212a that can be inserted into and removed from the claw of the flange 205b of the lower plate 205.

Outer peripheral flange 2 of the upper plate 211
11c allows the pawl 212a to pass therethrough and enables the assembling work from above.
Is attached to the claw of the flange 211c. The sliding member 211 is attached to the upper end of the lock ring 212.
A flange 212b that can be rotated and slid by a and 211b is provided, and the roller 2 is provided at an appropriate position of the lock ring 212.
13 is attached.

Reference numeral 6c designates an arm which is assembled to the column of the mold opening / closing device 6a so as to be able to move up and down, and 140 is a bolster plate fixed to the arm 6c, which is moved up and down by the operation of the lifting cylinder 6d. 141 is a bolster plate and plate 2
It is a known attachment / detachment device for attaching / detaching 11 and 11. 160 is a sliding rail 161 attached to the bolster plate 140.
It is a block that slides on the cylinder 162.

In the block 160, the roller 213 is attached.
Is provided with a recessed portion 160a. According to the above structure, the bolster plate 140 descends,
When abutting against the plate 211 of the mold assembly M, the roller 213 enters the recess 160a of the block 160,
When the pressure fluid in the pressurizing chamber 205a is discharged, the claw 205
A gap is formed between b and the claw 212a, and the cylinder 162
Causes the lock ring 212 to rotate and the claw 212a to move to the claw 2
If the bolster plate 140 rises after stopping the rotation at a position where it can pass 05b, the split mold apparatus M is opened as in the conventional case.

FIG. 14 shows a split die opening / closing device, but this split die opening / closing device only removes unnecessary parts from the split die opening / closing device shown in FIGS. 20 and 21. , Detailed description is omitted. 15 and 16 show a pressure fluid supply / discharge device for opening the check valve 206 provided on the lower plate 205 of the mold assembly M and supplying / discharging the pressure fluid. FIG. 16 shows a state before the stop valve 206 is opened, and FIG. 16 shows a state in which the check valve 206 is opened.

The pressure fluid supply / discharge device 300 is provided on the frame 6e of the mold opening / closing device 6, the mold base 5 of the vulcanization station 1, and the mold carrier 3. 301 is a cylinder, and the cylinder 301 is fixed to a proper position of the frame 6e, the mold table 5, or the mold carrier 3 and has a rod 301a.
A flange 303 having a pressure fluid hose 302 is fixed to the end of the.

An inner cylinder pipe 304 having a double pipe structure is erected on the flange 303, and an outer cylinder pipe 305 can be moved up and down while being biased by a spring 306. The upper end of the outer tube 305 contacts the lower flange of the check valve 206 and is hermetically held by an end face seal (not shown).

A plurality of passages 304a are provided at the upper end of the inner tubular pipe 304, communicate with the lower passage 304b, and communicate with the hose 302 via the passage 303a in the flange 303. 304c is packing, 304d
Is a guide bush, 304e is a packing presser, and has a passage 304f similar to the passage 304a.

The packing retainer 304e has a bolt 304
It is fixed to the upper end of the inner tubular pipe 304 by g. The bolt 304g further rises after the cylinder 301 operates and the spring 306 is compressed and the outer cylinder pipe comes into contact with the lower end flange of the check valve 206, and the valve body 206a of the check valve 206 is the inner cylinder. The check valve passage is opened by being pushed up by the bolt 304g at the upper end of the pipe 304.

A well-known switching valve 307 is provided at the end of the hose 302 to supply and discharge the pressure fluid, and further to supply a vacuum if necessary. According to the tire vulcanization mold assembly described above, the tire vulcanization mold can be used for the tire vulcanization equipment already proposed by the applicant of the present application without preparing a new mold shaving device for the conventional tire vulcanization mold. There are advantages.

[0091]

According to the tire vulcanizing mold assembly described above,
(1) The conventional tire vulcanizing mold can be used for the tire vulcanizing equipment already proposed by the applicant of the present application without preparing a split mold device. (2) When the tire is moved from the tire vulcanizing position for mold replacement or bladder replacement, the lock ring driving device and the pressurizing device can be automatically decoupled, and the replacement work can be automated. (3) From the time the mold is opened and closed at the mold opening and closing stations, until it is transported, vulcanized at the vulcanization station, and returned to the mold opening and closing station to open the mold, the mold is opened against the tire pressure. Can be stopped.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a tire vulcanizing facility to which a first embodiment of a tire vulcanizing mold assembly of the present invention is applied.

FIG. 2 is a side view taken along the line aa in FIG.

FIG. 3 is a side view showing a first embodiment of the tire vulcanizing mold assembly of the present invention as seen from the direction of arrow A in FIG.

FIG. 4 is a plan view showing a first embodiment of a tire vulcanizing mold assembly of the present invention.

FIG. 5 shows the tire vulcanizing mold assembly of the first embodiment.
It is a vertical side view seen from the arrow A direction.

FIG. 6 is a plan view showing another example of the tire vulcanizing equipment to which the second embodiment of the tire vulcanizing mold assembly of the present invention is applied.

7 is a side view taken along the line aa in FIG.

8 is a vertical cross-sectional side view showing a second embodiment of the tire vulcanizing mold assembly of the present invention taken along the line bb in FIG.

FIG. 9 is a plan view of a tire vulcanizing mold assembly according to the second embodiment.

10 is a system diagram of the pressurization control device shown in FIG.

FIG. 11 is a vertical sectional side view showing a third embodiment of a tire vulcanizing mold assembly of the present invention.

FIG. 12 is a vertical sectional side view showing a fourth embodiment of a tire vulcanizing mold assembly of the present invention.

FIG. 13 is a plan view showing a lock ring operating mechanism of the fourth embodiment.

FIG. 14 is a vertical cross-sectional side view showing a split mold operating device of the mold opening / closing device of the fourth embodiment.

FIG. 15 is a vertical cross-sectional side view showing a pressure fluid supply / discharge device for the pressurizing chamber of the pressurizing piston plate according to the fourth embodiment.

16 is a vertical cross-sectional side view showing an open state of a check valve of the pressure fluid supply / discharge device of FIG.

FIG. 17 is a plan view showing an example of a conventional tire vulcanizing facility.

18 is a vertical cross-sectional front view taken along the line cc of FIG.

FIG. 19 is a vertical sectional side view showing a tire mold applied to the tire vulcanizing equipment.

FIG. 20 is a vertical cross-sectional front view showing one mode of the tire mold and the mold opening / closing device, taken along the line dd of FIG. 18.

FIG. 21 is a vertical cross-sectional front view showing another embodiment of the tire mold and the mold opening / closing device, taken along the line dd of FIG. 18.

[Explanation of symbols]

 204 pressurizing piston plate 205 lower plate 205a pressurizing chamber 205b outer peripheral flange 206 check valve 211 upper plate 211c outer peripheral flange 212 lock ring

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B29L 30:00

Claims (7)

[Claims] 1. An upper flange provided on an outer peripheral portion of an upper die of a tire vulcanizing die or an upper flange provided on an outer peripheral portion of a plate on which the upper die is mounted, and an outer peripheral portion of a plate on which a lower die is vertically movable. In a tire vulcanizing mold assembly having a lower flange provided on the lower flange and a lock ring rotatably assembled to one of the flanges and detachably engaged with the other flange, the plate is pressed against the plate. One end of the device is detachably attached, and an output rod is attached to the other end of the pressurizing device so as to penetrate the plate portion and come into contact with the lower mold, and the tire vulcanizing mold is closed. The tire vulcanizing mold assembly is configured so as to close the mold opening force due to the internal pressure of the tire vulcanizing mold when the flanges are connected by the lock ring. 2. The tire vulcanizing mold assembly according to claim 1, further comprising a projection piece provided on the lock ring and a rotation drive mechanism for the lock ring that is attachable to and detachable from the projection piece. 3. The tire vulcanizing mold assembly according to claim 1, further comprising: a gantry on which the tire vulcanizing mold assembly is installed, and an elastic support member supporting the pressurizing device on the gantry. 4. An upper flange provided on an outer peripheral part of an upper mold of a tire vulcanizing mold or an upper flange provided on an outer peripheral part of a plate on which the upper mold is mounted, and an outer peripheral part of a plate on which a lower mold can be lifted and lowered. In a tire vulcanizing mold assembly having a lower flange provided in the above and a lock ring rotatably assembled to one of the flanges and detachably engaged with the other flange, wherein the plate and the A pressurizing device for pressurizing the lower mold in a separating direction,
A tire vulcanizing mold assembly comprising a driving device of the pressurizing device. 5. An upper flange provided on an outer peripheral portion of an upper die of a tire vulcanizing die or an upper flange provided on an outer peripheral portion of a plate on which the upper die is mounted, and an outer peripheral portion of a plate on which a lower die is vertically movable. In a tire vulcanizing mold assembly having a lower flange provided in the above and a lock ring rotatably assembled to one of the flanges and detachably engaged with the other flange, wherein the plate and the A tire vulcanizing mold assembly comprising a spring assembly that biases a lower mold in a separating direction. 6. An end portion of a pressure device is detachably attached to the lower plate, and an output rod is attached to the other end portion of the pressure device so as to penetrate the plate portion and come into contact with the lower mold. The tire vulcanizing mold assembly according to claim 4, wherein the pressurizing device presses and closes the tire vulcanizing mold when the respective flanges are connected by the lock ring. 7. A pressurizing piston plate is provided on the lower plate so as to be able to move up and down, a pressurizing chamber is formed in the plate directly below the pressurizing piston plate, and a non-return valve is provided at a pressure fluid supply port to the pressurizing chamber. The tire vulcanization mold assembly according to claim 4, wherein a valve is provided and the tire vulcanization mold is pressed and closed by the pressurizing device when the respective flanges are connected by the lock ring.