CN208323931U - Tire-mold sealer and vacuumize tire-mold - Google Patents

Abstract

The utility model relates to tire-mold construction applications, discloses a kind of tire-mold sealer and vacuumize tire-mold.The middle die sleeve and pedestal of tire-mold sealer and tire-mold cooperate to seal tire-mold, and tire-mold sealer further includes lower sealing ring；The bottom of middle die sleeve is arranged in lower sealing ring, and the inner radial wall of lower sealing ring is matched with the outer radial periphery face of pedestal.It is such to vacuumize that tire-mold structure is simple, and sealing effect is outstanding and convenient for safeguarding.

Description

Tire-mold sealer and vacuumize tire-mold

Technical field

The utility model relates to tire-mold construction applications, in particular to a kind of tire-mold sealer And vacuumize tire-mold.

Background technique

Tire-mold when in use, to make the smooth discharge of gas, by processing a large amount of gas vents in cavity surface, tire base with Gas is passively discharged by gas vent between mold tyre surface, when structure is complicated for tyre tread, when pattern depth is larger, by temperature and tire Mobility after base is heated influences, and phenomenon of choking with resentment easily occurs, causes tire starved, tire arris unintelligible, influence tire Service performance and appearance.At this moment the sealing performance of tire-mold just plays important affect.

Please refer to Fig. 1, in traditional activating mold 10, especially between pedestal 12 and middle die sleeve 11, often by The sealing element 13 being arranged in the peripheral surface of middle 11 lower end of die sleeve is come the sealing realized.

But it is this vacuumize mold 10, the upper end of the outer circle of pedestal 12 is bonded shape with the peripheral surface of middle 11 lower end of die sleeve Be that proof strength is indeformable at sealing, the upper end thickness of the outer circle of general pedestal 12 is thicker, blank cost and processing capacity all compared with Greatly, more demanding for 10 size of mold, vulnerable to being limited to vulcanizer size.

And die sleeve 11 is an integral structure because in, later period inconvenience replacement can only integrally be scrapped if any damage.

Utility model content

The purpose of this utility model includes providing a kind of tire-mold sealer, can be improved in the related technology The inconvenient problem of sealing structure manufacture, maintenance.

The another object of the utility model is to provide a kind of vacuumizing including above-mentioned tire-mold sealer Tire-mold.

The embodiments of the present invention are achieved through the following technical solutions:

A kind of tire-mold sealer cooperates with the middle die sleeve and pedestal of tire-mold to seal tire Mold.

Tire-mold sealer further includes lower sealing ring；

The bottom of middle die sleeve is arranged in lower sealing ring, and the outer radial periphery face of the inner radial wall of lower sealing ring and pedestal matches It closes.

Inventor find existing tire-mold sealer often because leakproofness is bad and the phenomenon that occurs choking with resentment, It causes tire starved, tire arris unintelligible, influences the service performance and appearance of tire.In the sealing structure of tire-mold, The sealing of pedestal and middle die sleeve is very important part.

The pedestal of the tire-mold sealer of the relevant technologies is an integral structure, the top of the maximum outer circle of pedestal (or being upper end) is bonded to form sealing structure with the bottom (bottom of outer circle) of middle die sleeve.In order to ensure the knot of the sealing structure Structure intensity, keeps it from easily-deformable, therefore the thickness of the outer circle upper end of pedestal is thicker, and corresponding blank cost and processing capacity are all very Greatly, the increase of cost of material and processing cost is necessarily caused.However the mold more demanding for size, and be limited to vulcanize The setting of the size of machine, pedestal and middle die sleeve cannot be too thick, too big, and thickness and height are big, though it can guarantee sealing effect and extension Die life, but die size design flexibility can be reduced, the vulcanizer range for keeping mold applicable is limited, needs to select bigger rule The vulcanizer of lattice increases the equipment cost of vulcanizer.On the other hand, sealing structure (pedestal or middle die sleeve) in the related technology is Integral structure, later period inconvenience replacement, can only integrally scrap if any damage.

Accordingly, inventor devises a kind of tire-mold sealer comprising lower sealing ring, the lower sealing ring are set It sets in the bottom of middle die sleeve, and lower sealing ring is matched with the outer radial periphery face of pedestal.So in die sleeve by lower sealing ring with The outer radial periphery face of pedestal forms sealing structure, to complete to the sealing between pedestal and middle die sleeve.Because of lower sealing ring and bottom The outer radial periphery face cooperation of seat, i.e. sealing structure cooperate from the upper end of pedestal outer circle in the related technology and the lower end of middle die sleeve, It is changed to the outer radial periphery and the outer circular direction (outer circle interior direction, the specifically medial surface of lower sealing ring) of middle die sleeve of pedestal outer circle Cooperation, pedestal, middle die sleeve realize non-maintaining (only needing to safeguard lower sealing ring), and such tire-mold lower seal fills The sealing structure set is easy to repair and replaces.

To sum up, such tire-mold sealer has outstanding sealing effect, and at low cost, easy to maintain, With significant economic benefit.

Further, tire-mold sealer further includes the first seal member；

First seal member is arranged between the inside of lower sealing ring and the outer radial periphery face of pedestal.

Further, the outer radial periphery face of pedestal is provided with the first groove, and the first seal member is provided in the first groove；

Or the first groove is provided on the inside of lower sealing ring, the first seal member is provided in the first groove.

Further, the first seal member is sealing ring.

Further, lower sealing ring is removably disposed in the bottom of middle die sleeve.

Further, lower sealing ring is bolted with middle die sleeve.

Further, the second seal member is provided between lower sealing ring and middle die sleeve.

Further, the second seal member is sealing ring.

Further, lower sealing ring and middle die sleeve weld or are glued.

Further, lower sealing ring is that integral type is connect with middle die sleeve.

Further, lower sealing ring includes guide surface；

Guide surface is configured to guide lower sealing ring and base engagement；

Guide surface is that the conical surface or arc surface are constituted；

Further, guide surface and substructure height direction have default angle theta,

θ is 5-40 °, preferably 20-35 °.

Further, lower sealing ring includes mating surface；

Mating surface is configured to and base engagement, and lower sealing ring, middle die sleeve and pedestal is made to cooperate to seal tyre mould Tool；

Mating surface is cylindrical surface；

Or mating surface is the conical surface, the conical surface and substructure height direction have default angle α,

α is preferably 0-10 °.

One kind vacuumizing tire-mold comprising the tire-mold sealer of any of the above-described.

The beneficial effect of the utility model embodiment is:

Tire-mold sealer includes lower sealing ring, which is arranged in the bottom of middle die sleeve, lower sealing Ring is matched with the outer radial periphery face of pedestal.Tire-mold sealer passes through the outer radial periphery face of lower sealing ring and pedestal Sealing structure is formed, to complete the sealing to pedestal and middle die sleeve.Because the outer radial periphery face of lower sealing ring and pedestal cooperates, i.e., Sealing structure cooperates from the upper end of pedestal outer circle in the related technology and the lower end of middle die sleeve, and the diameter for being changed to pedestal outer circle is outside The cooperation of the outer circular direction (outer circle interior direction, the specifically medial surface of lower sealing ring) of Zhou Yuzhong die sleeve, pedestal, middle die sleeve are real Existing non-maintaining (only needing to safeguard lower sealing ring).In this way, the tire-mold for having such tire-mold sealer is close Seal structure is easy to repair and replaces.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the partial schematic diagram of the tire-mold of the relevant technologies；

Fig. 2 is provided by the embodiment of the utility model to vacuumize tire-mold including tire-mold sealer Structural schematic diagram；

Fig. 3 is the first partial schematic diagram of Fig. 2；

Fig. 4 is the partial schematic diagram of Fig. 3；

Fig. 5 is the second partial schematic diagram of Fig. 2；

Fig. 6 is the partial schematic diagram of tire-mold sealer provided by the embodiment of the utility model；

Fig. 7 is another partial schematic diagram of tire-mold sealer provided by the embodiment of the utility model；

Fig. 8 is the another structural schematic diagram of tire-mold sealer provided by the embodiment of the utility model；

Fig. 9 is another structural schematic diagram of tire-mold sealer provided by the embodiment of the utility model.

Icon: 10- mold；Die sleeve in 11-；12- pedestal；13- sealing element；20- vacuumizes tire-mold；110- upper cover； 111- annular groove；First conical surface of 112-；Die sleeve in 120-；131- arcuate seat；132- pattern block；141- epipleural；Under 142- Side plate；150- pedestal；161- top shoe；162- mounting ring；170- upper sealing ring；171- annular protrusion；Second conical surface of 172-； 200- lower sealing ring；The first seal member of 201-；The first groove of 202-；The second seal member of 220-；300- sealing element；410- matches Conjunction face；420- guide surface.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

In the description of the present invention, it should be noted that if occur term " center ", "upper", "lower", " left side ", The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "inner", "outside" is orientation based on the figure or position Relationship or the utility model product using when the orientation or positional relationship usually put, be merely for convenience of describing this reality It is described with novel with simplified, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific Orientation construction and operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " It is described etc. being only used for distinguishing, is not understood to indicate or imply relative importance.

In addition, being not offered as requiring component abswolute level or outstanding if there are the terms such as term "horizontal", "vertical", " pendency " It hangs down, but can be slightly tilted.It is not to indicate to be somebody's turn to do if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical" Structure is had to fully horizontally, but can be slightly tilted.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, if there is art Language " setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachable Connection, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, centre can also be passed through Medium is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can specific feelings Condition understands the concrete meaning of above-mentioned term in the present invention.

Embodiment

Referring to figure 2., Fig. 2 is a kind of pumping including tire-mold sealer provided by the embodiment of the utility model The structural schematic diagram of vacuum tire mold 20.As can be seen from Figure 2 one kind vacuumizes tire-mold 20 comprising middle die sleeve 120, pedestal 150 and tire-mold sealer.

It as an implementation, further include upper cover 110, arcuate seat 131, pattern block 132, epipleural 141, lower side panel 142。

Arcuate seat 131 is slidably disposed on middle die sleeve 120 radially to move, and the setting of pattern block 132 is being bent Radially inner side of the shape seat 131 far from middle die sleeve 120；Upper cover 110 is slidably connected by top shoe 161 with arcuate seat 131；On The bottom of upper cover 110 is arranged in side plate 141, and epipleural 141 is abutted with the top of pattern block 132；Lower side panel 142 is arranged in pedestal 150 top, lower side panel 142 are abutted with the bottom of pattern block 132；Pedestal 150 is connected to the bottom of arcuate seat 131；Pattern block 132, epipleural 141 and lower side panel 142 are enclosed the accommodation space for accommodating green tyre jointly；

Tire-mold sealer and middle die sleeve 120, pedestal 150 cooperate to seal tire-mold.Tyre mould Having sealer further includes lower sealing ring 200；The bottom of middle die sleeve 120, and lower sealing ring is arranged in lower sealing ring 200 200 inner radial wall is matched with the outer radial periphery face of pedestal 150.The bottom of middle die sleeve 120 is arranged in lower sealing ring 200, and Lower sealing ring 200 is matched with the outer radial periphery face of pedestal 150.

The pedestal 150 of the tire-mold of the relevant technologies is an integral structure, the top of the maximum outer circle of pedestal 150 (or For upper end) it is bonded to form sealing structure with the bottom (bottom of outer circle) of middle die sleeve 120.In order to ensure the structure of the sealing structure Intensity, keeps it from easily-deformable, therefore the thickness of the outer circle upper end of pedestal 150 is thicker, and corresponding blank cost and processing capacity are all It is very big, necessarily cause the increase of cost of material and processing cost.However the mold more demanding for size, and it is limited to sulphur The setting of the size of change machine, pedestal 150 and middle die sleeve 120 cannot be too thick, too big, this affects the sealing of tire-mold instead Property.On the other hand, sealing structure (pedestal 150 or middle die sleeve 120) in the related technology is an integral structure, and later period inconvenience is more It changes, can only integrally be scrapped if any damage.

Accordingly, inventor devises a kind of tire-mold lower seal dress comprising lower sealing ring 200, the lower sealing ring 200 are arranged in the bottom of middle die sleeve 120, and lower sealing ring 200 is matched with the outer radial periphery face of pedestal 150.Under so passing through The outer radial periphery face of sealing ring 200 and pedestal 150 forms sealing structure, to complete the sealing to pedestal 150 and middle die sleeve 120. Because the outer radial periphery face of lower sealing ring 200 and pedestal 150 cooperates, i.e. sealing structure is from 150 outer circle of pedestal in the related technology Upper end and middle die sleeve 120 lower end cooperate, be changed to 150 outer circle of pedestal outer radial periphery and the outer circular direction of middle die sleeve 120 (outside Inner round side direction, the specifically medial surface of lower sealing ring 200) cooperation, pedestal 150, middle die sleeve 120 realize it is non-maintaining (only Need to safeguard lower sealing ring 200), and such tire-mold sealer sealing structure it is easy to repair and replacement.

Please continue to refer to Fig. 2-Fig. 7, more CONSTRUCTED SPECIFICATIONs are understood from figure.It can be seen from the figure that tire-mold Sealer further includes gib block (not shown), mounting ring 162 and upper sealing ring 170.

Pattern block 132 is fixed by tightly locking screw and arcuate seat 131, is tiltedly flat on the inside of 131 outside of arcuate seat and middle die sleeve 120 Face, arcuate seat 131 by gib block and middle die sleeve 120 formed can guiding surface, 131 top of arcuate seat connects top shoe 161, in 120 top of die sleeve connects mounting ring 162.

The top of middle die sleeve 120 is arranged in by bolt for mounting ring 162, so that the top surface of mounting ring 162 and upper cover 110 Either flush.When so convenient for vulcanizer work, upper hot plate (not shown) can steadily push mold.

As an implementation, mounting ring 162 and upper cover 110 are provided with opposite ring-shaped step and (show not in figure Label), upper sealing ring 170 is arranged in the ring-shaped step.170 bottom of upper sealing ring is equipped with convex annular close to the side of upper cover 110 171 are played, the position of the upper cover 110 matched with the annular protrusion 171 is equipped with annular groove 111.Further annular groove 111 Lateral border is first conical surface 112, and the lateral surface of annular protrusion 171 engaged therewith is also second conical surface 172, the two conical surfaces (first conical surface 112 and second conical surface 172) plays guiding, to ensure that upper sealing ring 170 and the sealing of upper cover 110 cooperate.

When die sinking, the ring-shaped step of mounting ring 162 holds up upper sealing ring 170, upper sealing ring 170 and mounting ring 162, sulphur Hot plate moves upwards together on change machine；When molding, mounting ring 162, upper sealing ring 170, vulcanizer upper plate move downward together, directly In place to upper sealing ring 170 and the sealing of upper cover 110 cooperation.

From this figure it can be seen that being equipped with sealing element 300 between upper sealing ring 170 and upper cover 110, sealing element 300 is arranged In seal groove (shown in figure unnumbered, similarly hereinafter) on upper sealing ring 170 and/or upper cover 110.

Between upper sealing ring 170 and mounting ring 162 be equipped with sealing element 300, sealing element 300 setting upper sealing ring 170 and/ Or in the seal groove in mounting ring 162.

Between mounting ring 162 and middle die sleeve 120 be equipped with sealing element 300, sealing element 300 setting mounting ring 162 and/or in In seal groove on die sleeve 120.

Please continue to refer to attached drawing, in the present embodiment, tire-mold sealer further includes the first seal member 201；First seal member 201 is arranged between the inside of lower sealing ring 200 and the outer radial periphery face of pedestal 150.

Further, the inside of lower sealing ring 200 is provided with the first groove 202, and it is close to be provided with first in the first groove 202 Seal component 201.It is understood that being also possible to the outer radial periphery face of pedestal 150 in the other embodiments of the utility model It is provided with the first groove 202, the first seal member 201 is provided in the first groove 202.As long as the first seal member 201 is arranged Between the inside of lower sealing ring 200 and the outer radial periphery face of pedestal 150, with sealed mold.

Optionally, the first seal member 201 is sealing ring.In other embodiments, the first seal member 201 can be close Any one in packing plate, seal rubber and soft packing.

Optionally, lower sealing ring 200 and middle die sleeve 120 weld or are glued.Referring to figure 5., lower sealing ring is shown in Fig. 5 200 with middle die sleeve 120 weld the case where.It can be seen from the figure that the thickness of lower sealing ring 200 is less than the bottom of middle die sleeve 120 The inner peripheral surface of the thickness of (i.e. close to the end of pedestal 150), lower sealing ring 200 is matched with the outer peripheral surface of pedestal 150.Lower sealing The inner peripheral surface of ring 200 is provided with the first seal member 201, and the first seal member 201 is arranged in lower sealing ring 200 and pedestal 150 Between to complete sealing function.

Fig. 6 is please referred to, Fig. 6 is a kind of another office of tire-mold sealer provided by the embodiment of the utility model Portion's schematic diagram.The difference from Fig. 5 is that optionally, lower sealing ring 200 is removably disposed in the bottom of middle die sleeve 120.

Further, lower sealing ring 200 is bolted with middle die sleeve 120.In the other embodiments of the utility model, under Sealing ring 200 and middle die sleeve 120 can be any dismountable connection type such as riveting, mortise-tenon joint, clamping, not limit here It is fixed.

From this figure it can be seen that being provided with the second seal member 220 between lower sealing ring 200 and middle die sleeve 120.Second Seal member 220 can be obviously improved the sealing effect of mold.Optionally, the second seal member 220 is sealing ring.

When taking screw connecting mode, tire-mold sealer 20 can be in vacuum state and antivacuum mold state Between free switching.Also can be by old mold, on the basis of size meets related request, remolding vacuum mold, without adding again Work.

Mode as simultaneously is conducive to later period maintenance replacement and facilitates, is at low cost, and corresponding part is only needed to change after damage It can (such as lower sealing ring 200, the first seal member 201, the second seal member 220, connector).

Fig. 7 is please referred to, Fig. 7 is a kind of the another of tire-mold sealer 20 provided by the embodiment of the utility model Partial schematic diagram.The difference is that, lower sealing ring 200 is that integral type is connect with middle die sleeve 120 with Fig. 5 and Fig. 6.

Such structure can substantially reduce the quantity (mainly the second seal member 220) of seal member, while can It ensures that lower sealing ring 200 has preferable structural strength, and then ensures the stable structure of tire-mold sealer 20 Property.

Fig. 8 is please referred to, it can be seen from the figure that lower sealing ring 200 includes guide surface 420.Guide surface 420 is configured to guide Lower sealing ring 200 and pedestal 150 cooperate.Further, guide surface 420 is that the conical surface or arc surface constitute that (Fig. 8 shows guide surface 420 the case where being the conical surface), guide surface 420 and 150 short transverse of pedestal have default angle theta, and θ is 5-40 °, preferably 20- 35°。

It can also be seen that lower sealing ring 200 further includes mating surface 410 from Fig. 8；Mating surface 410 is configured to and pedestal 150 cooperations, make lower sealing ring 200, middle die sleeve 120 and pedestal 150 cooperate to seal tire-mold.Further, it is oriented to The lower part of mating surface 410 is arranged in face 420.It is shown here as the case where mating surface 410 is cylindrical surface.The cooperation of cylindrical Face 410 have it is easy to process, convenient feature is arranged in corresponding sealing element 300.

It should be noted that lower sealing ring 200 can only include guide surface 420 or only include mating surface 410, or wrap simultaneously Guide surface 420 and mating surface 410 are included, here without limitation, as long as 150 phase interworking of lower sealing ring 200, middle die sleeve 120 and pedestal It closes to seal tire-mold.

Fig. 9 is please referred to, it can be seen from the figure that lower sealing ring 200 only includes mating surface 410.Further, mating surface 410 be the conical surface, and the conical surface and 150 short transverse of pedestal have default angle α, and α is preferably 0-10 °.

With continued reference to Fig. 1-Fig. 9, it can be seen from the figure that guide surface 420 is located at the lower part of lower sealing ring 200, guide surface Fillet between 420 and the bottom surface of lower sealing ring 200 (shown in figure unlabeled, similarly hereinafter) transition.

Optionally, the transition face (showing in figure unlabeled) cooperated with guide surface 420, transition face are provided on pedestal 150 It can be the conical surface or arc surface constituted, the guide surface 420 of the transition face and lower sealing ring 200 guides lower sealing ring 200 and pedestal 150 cooperations.Further, which is arranged on the circle end face of pedestal 150, the upper end circle of the transition face and pedestal 150 Angle transition.

The angle of the fillet is γ (not shown), and γ is 0-10 °.

It is provided by the embodiment of the utility model to vacuumize tire-mold 20 at least including tire-mold sealer It has the advantages that

1, lower seal structure is changed to split type, reduction blank material waste by integral type.

2, sealing structure is changed to lead ring outer circle from 150 outer circle of pedestal simultaneously, pedestal 150, lead ring are realized non-maintaining.

3, when taking bolt connecting mode, can between vacuum and antivacuum mold free switching.Also can by old mold, On the basis of size meets related request, remolding vacuum mold, without re-working.

4, later period maintenance replacement is convenient, at low cost, and sealed shield is only needed to change after damage.

5, mold design freedom degree is big, and die boundary dimensions are limited small compared with current art by vulcanizer.

6,200 thickness of lower sealing ring can be relatively thin, and material cost reduces.

7, machining tool is Vehicle Processing, raising efficiency.

8, structure design freedom is big, can at an arbitrary position, shape be arranged sealing ring, 150 outer circular shape of pedestal can from By designing, guarantee has in sealing contact.Mold design and requirement on machining accuracy are low, without die sleeve 120, peace in stringent control The dimensional accuracy of the height of ring 162 is filled, processing cost is low.Can middle die sleeve 120, mounting ring 162 after processing is completed, redesign Lower seal structure is installed.

The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model, Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (13)

1. a kind of tire-mold sealer cooperates with the middle die sleeve and pedestal of tire-mold to seal tyre mould Tool, it is characterised in that:

The tire-mold sealer further includes lower sealing ring；

The bottom of the middle die sleeve, and the diameter of the inner radial wall of the lower sealing ring and the pedestal is arranged in the lower sealing ring It is matched to outer peripheral surface.

2. tire-mold sealer according to claim 1, it is characterised in that:

The tire-mold sealer further includes the first seal member；

First seal member is arranged between the inside of the lower sealing ring and the outer radial periphery face of the pedestal.

3. tire-mold sealer described in any one of -2 according to claim 1, it is characterised in that:

The lower sealing ring is removably disposed in the bottom of the middle die sleeve.

4. tire-mold sealer described in any one of -2 according to claim 1, it is characterised in that:

The lower sealing ring is bolted with the middle die sleeve.

5. tire-mold sealer according to claim 4, it is characterised in that:

The second seal member is provided between the lower sealing ring and the middle die sleeve.

6. tire-mold sealer described in any one of -2 according to claim 1, it is characterised in that:

The lower sealing ring and the middle die sleeve welding are glued.

7. tire-mold sealer described in any one of -2 according to claim 1, it is characterised in that:

The lower sealing ring is that integral type is connect with the middle die sleeve.

8. tire-mold sealer described in any one of -2 according to claim 1, it is characterised in that:

The lower sealing ring includes guide surface；The guide surface is configured to guide lower sealing ring and the base engagement；

The guide surface is that the conical surface or arc surface are constituted.

9. tire-mold sealer according to claim 8, it is characterised in that:

The guide surface and substructure height direction have default angle theta,

θ is 5-40 °.

10. tire-mold sealer according to claim 9, it is characterised in that:

θ is 20-35 °.

11. tire-mold sealer described in any one of -2 according to claim 1, it is characterised in that:

The lower sealing ring includes mating surface；

The mating surface is configured to and base engagement, and lower sealing ring, middle die sleeve and pedestal is made to cooperate to seal tyre mould Tool；

The mating surface is cylindrical surface；

Or the mating surface is the conical surface, the conical surface and substructure height direction have default angle α.

12. tire-mold sealer according to claim 11, it is characterised in that:

α is 0-10 °.

13. one kind vacuumizes tire-mold, it is characterised in that:

The tire-mold that vacuumizes includes tire-mold sealer of any of claims 1-12.