CN209365138U - A kind of sealing device and vacuumize tire-mold - Google Patents

Abstract

The utility model provides a kind of sealing device and vacuumizes tire-mold.Sealing device cooperates with the lead ring and pedestal for vacuumizing tire-mold and vacuumizes tire-mold to seal, and sealing device includes first seal, floating seal ring and elastic device；Pedestal has the first annular groove circumferentially, and floating seal ring is arranged in the first annular groove by elastic device；Elastic device is configured to supply the elastic force for making floating seal ring close to lead ring；First seal is embedded in floating seal ring close to the end of lead ring, and first seal is configured such that lead ring and sealing device cooperate to realize sealing effect.

Description

A kind of sealing device and vacuumize tire-mold

Technical field

The utility model relates to tires to vacuumize mould applications, in particular to a kind of sealing device and vacuumize wheel Placenta.

Background technique

Fig. 1 is the structural schematic diagram in the prior art for vacuumizing tire-mold, and Fig. 2 vacuumizes wheel to be in the prior art For placenta i.e. by the structural schematic diagram of sealing state, Fig. 3 is the structure in the prior art for vacuumizing tire-mold closed state Schematic diagram.From figure 1 it appears that the existing tire-mold that vacuumizes includes lead ring 21, pedestal 22, upper cover 24, sliding block 25, takes out Vacuum gas nozzle 26, central authority 27b, capsule 29, fetus 30, positioning pin c1, locating notch.Pedestal 22 is circle, pedestal 22 Circumferential edge has locating notch.The circumferential edge of lead ring 21 has a positioning pin c1 close to the part of pedestal, positioning pin c1 and fixed The mutual cooperation when molding will extremely seal of position notch, achievees the effect that sealing device.

The sealing ring that the damage of tire-mold sealing ring is concentrated mainly between lead ring and pedestal is vacuumized, the form of expression is disconnected Split or damage, mainly during mold will be sealed to mold closed condition caused by, as shown in Figures 2 and 3.From Fig. 2 Find out, when mold molds every time, sealing ring can all be contacted with pedestal, be influenced by vulcanizer precision, and molding all can not every time Sealing ring is caused to impact with degree.As can be seen from Figure 3, although locating notch border rounding arc is handled, sealing ring can still be made At different degrees of crowded wound.It is damaged repeatedly in this way, after through repeat impact and squeezing, sealing ring will be broken or damage.

In tire production process, to improve Appcarance guality of tyres, surface without starved or avoids the mitogenetic glue of generating unit, in sulphur It is often especially widely used in terms of riding tire using mold is vacuumized during changing；It is existing to vacuumize mold, by In the limitation by structure, the sealing ring between lead ring and pedestal is often broken, and needs to be replaced frequently sealing ring.

Utility model content

First of the utility model is designed to provide a kind of sealing device, and excessive compression is close when improving mold clamping The case where seal.

Second of the utility model is designed to provide one kind and vacuumizes tire-mold, excessive when improving mold clamping The case where squeezing sealing ring.

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

Sealing device cooperates with the lead ring and pedestal for vacuumizing tire-mold and vacuumizes tire-mold to seal；Sealing Device includes first seal, floating seal ring and elastic device；Pedestal has the first annular groove circumferentially；Floating seal ring It is arranged in the first annular groove by elastic device；Elastic device is configured to supply the elasticity for making floating seal ring close to lead ring Power；First seal is embedded in floating seal ring close to the end of lead ring, and first seal is configured such that lead ring and sealing device It cooperates to realize sealing effect.

Inventors have found that designs at present vacuumizes tire-mold, realized by the way of positioning pin and locating notch Lead ring and pedestal are being molded to the seal process of completion status.Due to being influenced by vulcanizer precision, molding all can different journeys every time Degree causes to impact to sealing ring, and locating notch causes different degrees of crowded wound to sealing ring.It is damaged repeatedly in this way, through multiple After impact and extruding, sealing ring will be broken or damage, and influence the vacuumizing effect of mold.

A kind of sealing device of inventor's utility model accordingly, by with the lead ring and pedestal phase interworking that vacuumize tire-mold It closes, lead ring and pedestal sealing means are end face seal mode, the sealing ring being equipped with by the first groove of floating seal ring end It cooperates with lead ring, floating seal ring lower part is connected with pedestal by elastic device, then can be avoided pair in mold clamping Sealing ring causes to fail, and avoids causing to squeeze to sealing ring and impacting, and protection sealing ring is injury-free, effectively guarantees to vacuumize Effect.

To sum up, such sealing device designs simple, perfect in shape and function, can preferably improve and vacuumize tire-mold molding When squeeze wound and impact sealing ring, guarantee to vacuumize the vacuumizing effect of tire-mold；Tire-mold life is vacuumized to ensure that The quality and quality of the tire of production.

Further, sealing device further includes second seal, and second seal is arranged in floating seal ring and the first ring Between the side wall of slot；

Preferably, second seal is arranged on the side wall of floating seal ring or second seal is arranged in the first annular groove Side wall on.

Further, the upper surface of floating seal ring is provided with the first groove, and first seal is arranged in the first groove；

The cross sectional shape of first groove is trapezoidal or rectangle, preferably inverted trapezoidal；

Preferably, the side wall of floating seal ring is provided with the second groove；And/or first annular groove side wall on be provided with Two grooves；Second seal is located in the second groove；

The cross sectional shape of second groove is trapezoidal or rectangle, preferably inverted trapezoidal.

Further, elastic device is compressed spring, it is preferred that compressed spring is arranged in the first annular groove of pedestal.

Further, sealing device includes the first limiting section and the first auxiliary section；

First limiting section is set on the base, and the first auxiliary section is arranged on floating seal ring；

First limiting section can be contacted with the first auxiliary section to limit floating seal ring far from pedestal.

Further, the first limiting section includes limit plate；

One end of limit plate is fixed on pedestal, and the other end of limit plate is provided with towards the extension of floating seal ring First protrusion；

First auxiliary section includes the stage portion being arranged on floating seal ring；

First protrusion can be contacted with stage portion, to limit floating seal ring far from pedestal.

Further, the bottom of the first annular groove of pedestal is provided with mounting groove；And/or the bottom of floating seal ring is provided with Mating groove；

The opening of mounting groove and mating groove is oppositely arranged；Elastic device is movably disposed in mounting groove and mating groove encloses Space in；

Preferably, elastic device corresponds to the first center line that floating seal ring extends along short transverse.

Further, sealing device includes the first locating piece and the second locating piece；

First locating piece and the second locating piece extend along the axial direction for vacuumizing tire-mold；

On the pedestal that first locating piece is arranged in, the second locating piece is arranged on lead ring；

First locating piece and the second locating piece can cooperate to limit the relative position of pedestal and lead ring.

Further, the first locating piece includes guide pin, and guide pin is set on the base, and guide pin edge vacuumizes tire The axial direction of mold extends；

Second locating piece includes positioning sleeve, and positioning sleeve includes first through hole, and first through hole is along the axis for vacuumizing tire-mold Extend to direction；

In default clamping process, guide pin can pass through first through hole.

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

The technical solution of the utility model embodiment is at least had the following advantages and beneficial effects:

Sealing device provided by the embodiment of the utility model includes first seal, floating seal ring and elastic device.It is logical It crosses the first seal on floating seal ring in the first groove to cooperate in molding with lead ring, floating seal ring and pedestal are logical Elastic device connection is crossed, first seal can be protected, guarantees the first seal not impact by excessive intensity.Pass through positioning Positioning is realized in the mutual cooperation of seat, guide pin, positioning sleeve, guarantees that first seal is not squeezed.To protect sealing ring, prolong Long sealing ring service life guarantees mold vacuumizing effect.

It is provided by the embodiment of the utility model to vacuumize tire-mold, due to having above-mentioned sealing device, also can The case where sealing ring is by excessive compression and impact is enough avoided, to protect sealing ring, extends sealing ring service life, ensures production Efficiency.

Meanwhile the tire-mold provided by the embodiment of the utility model that vacuumizes can be in the existing tire-mold of vacuumizing On the basis of, it is obtained by being simply transformed, has saved cost, increased productivity effect；In clamping process, it can carry out in advance Vacuum pumping can better ensure that the gas of mould inside is extracted.

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 first structure diagram in the prior art for vacuumizing tire-mold；

Fig. 2 is the second structural schematic diagram in the prior art for vacuumizing tire-mold；

Fig. 3 is the third structural schematic diagram in the prior art for vacuumizing tire-mold；

Fig. 4 provides the first structure diagram for vacuumizing tire-mold for the embodiments of the present invention；

Fig. 5 provides the second structural schematic diagram for vacuumizing tire-mold for the embodiments of the present invention；

Fig. 6 provides the third structural schematic diagram for vacuumizing tire-mold for the embodiments of the present invention；

Fig. 7 provides the partial enlarged view of sealing device for the embodiments of the present invention.

Icon: c1- positioning pin；C2- locating notch；10- sealing device；100- first seal；110- second is sealed Part；200- floating seal ring；The first groove of 210-；220- mating groove；The second groove of 240-；300- elastic device；410- first Limiting section；411- limit plate；The first protrusion of 412-；The first auxiliary section 420-；421- stage portion；The first locating piece of 510-；511- Positioning seat；512- guide pin；The second locating piece of 520-；521- positioning sleeve；522- first through hole；20- vacuumizes tire-mold； 21- lead ring；22- pedestal；The first annular groove of 22a-；22b- mounting groove；The upper hot plate of 23-；24- upper cover；25- sliding block；26- is vacuumized Gas nozzle；27a- driving flange；27b- central authority；29- capsule；30- fetus.

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 1

Incorporated by reference to referring to Fig. 4 to Fig. 7, a kind of sealing device 10, with the lead ring 21 and pedestal for vacuumizing tire-mold 20 22, which cooperate, vacuumizes tire-mold 20 to seal, including first seal 100, floating seal ring 200 and elastic device 300。

Pedestal 22 has the first annular groove 22a circumferentially；Floating seal ring 200 is arranged by elastic device 300 the In one annular groove 22a；Elastic device 300 is configured to supply the elastic force for making floating seal ring 200 close to lead ring 21；First is close Sealing 100 is embedded in floating seal ring 200 close to the end of lead ring 21, and first seal 100 is configured such that lead ring 21 and sealing Device 10 cooperates to realize sealing effect.

Sealing device 10, by cooperating with the lead ring 21 and pedestal 22 for vacuumizing tire-mold 20, lead ring 21 and bottom Seat 22 sealing means be end face seal mode, the sealing ring being equipped with by the first groove 210 of 200 end of floating seal ring with lead Ring 21 cooperates, and 200 lower part of floating seal ring is connected by elastic device 300 and pedestal 22, then can in mold clamping, It avoids that sealing ring is caused to fail, avoids that sealing ring is caused to squeeze and is impacted, protection sealing ring is injury-free, effectively guarantees The effect vacuumized.

Preferably, the upper surface of floating seal ring 200 is arranged in first seal 100.Specifically, floating seal ring 200 Upper surface be provided with the first groove 210；First seal 100 is arranged in the first groove 210.The section of first groove 210 Shape is trapezoidal or rectangle, preferably inverted trapezoidal.

It should be noted that first seal 100 can also be arranged in it is opposite with floating seal ring 200 on lead ring 21 Position；Optionally, the groove with first seal 100 can be set on lead ring 21, and first seal 100 is arranged in the groove It is interior, as long as being arranged between floating seal ring 200 and lead ring 21 to seal lead ring 21 and sealing device 10.

Further, sealing device 10 further includes second seal 110, and second seal 110 is arranged in floating seal ring 200 and first annular groove 22a side wall between.So ensure the leakproofness between floating seal ring 200 and the first annular groove 22a, into The sealing performance of one step raising sealing device 10.Preferably, second seal 110 is arranged on the side wall of floating seal ring 200, Or second seal 110 is arranged on the side wall of the first annular groove 22a.

Preferably, the side wall of floating seal ring 200 is provided with the second groove 240；And/or first annular groove 22a side wall on It is provided with the second groove 240；Second seal 110 is located in the second groove 240；The cross sectional shape of second groove 240 is trapezoidal Or rectangle, preferably inverted trapezoidal.

In the present embodiment, second seal 110 is arranged on the side wall of the radially inner side of the first annular groove 22a.Specifically, Second seal 110 is embedded in second groove 240, and second seal 110 is abutted with the side wall of floating seal ring 200.

It should be noted that the first ring can also be arranged in the second groove 240 in the other embodiments of the utility model (it is arranged on the side wall of floating seal ring 200 on the side wall of the radial outside of slot 22a or on the side wall of floating seal ring 200 Have the advantages that processing is convenient), as long as second seal 110 can be realized between floating seal ring 200 and the first annular groove 22a Sealing.

It should be noted that in the present embodiment, the cross sectional shape of the first groove 210 and the second groove 240 be it is trapezoidal or Rectangle, preferably inverted trapezoidal, to improve groove (the first groove 210 and the second groove 240) and sealing element (first seal 100 and second seal 110) connection compactness.

First seal 100 and second seal 110 are sealing ring, preferably O-ring seal, the sealing ring of O-shaped structure It is easy for installation.When in clamping process by the extruding force from lead ring 21, can well with groove (the first groove 210 or Second groove 240) it cooperates, when use, is not easy to be detached from out of first groove 210 with the folding of lead ring 21.

Further, elastic device 300 is compressed spring, it is preferred that the first annular groove of pedestal 22 is arranged in compressed spring In 22a.

From this figure it can be seen that the bottom of the first annular groove 22a of pedestal 22 is provided with mounting groove 22b, floating seal ring 200 bottom is provided with mating groove 220；Mounting groove 22b and the opening of mating groove 220 are oppositely arranged；Elastic device 300 is movable Ground is arranged in the space that mounting groove 22b and mating groove 220 enclose.So, it can be achieved that floating seal ring 200 moves up and down. Preferably, the first center line of the corresponding floating seal ring 200 of elastic device 300 extended along short transverse, has ensured bullet in this way Property device 300 apply elastic force can be along the short transverse of floating seal ring 200, it is ensured that floating seal ring 200 move it is steady It is qualitative.Certainly mounting groove 22b only can also be set in the bottom of the first annular groove 22a or is only arranged in the bottom of floating seal ring 200 Mating groove 220.

Optionally, elastic device 300 includes two springs, and there are two mounting grooves for the setting of corresponding first annular groove 22a 22b, spring stretching motion in two mounting groove 22b, as long as the quantity of spring and mounting groove 22b in the circumferential can guarantee bullet The elastic force that spring generates jacks up floating seal ring 200, can be 3 or more, preferably 4-8, spring is circumferentially evenly arranged on On pedestal 22, the uniform force of floating seal can be made, be unlikely to that lateral deviation occurs.Floating seal do not mold it is close to floating When sealing and lead ring 21 contact with each other, compressed spring is in elongation state, floating seal ring 200 is jacked up, the first limiting section 410 It is contacted with the first auxiliary section 420.

In the other embodiments of the utility model, elastic device 300 can also be rubber, appoint in pneumatic elasticity structure It anticipates one kind, here an only example.

Further, sealing device 10 includes the first limiting section 410 and the first auxiliary section 420, and the first limiting section 410 is the bottom of at On seat 22, the first auxiliary section 420 is arranged on floating seal ring 200, and the first limiting section 410 can be supported with the first auxiliary section 420 Cooperation is connect, to limit floating seal ring 200 far from pedestal 22.In the present embodiment, it is close can to limit floating for the first limiting section 410 Seal ring 200 is far from 22 certain distance of pedestal, that is to say, that floating seal ring 200 is in the first limiting section 410 and the first auxiliary section There is certain stroke-limit under 420 contacting, in stroke-limit, floating seal ring 200 can be in the pressure of lead ring 21 Power, spring elastic force under the action of move.The distance needed to be adjusted setting according to the opportunity vacuumized in advance.

Further, the first limiting section 410 is limit plate 411, and one end of limit plate 411 is fixed on pedestal 22, 411 other end of limit plate is provided with the first protrusion 412 extended towards floating seal ring 200, and the first auxiliary section 420 includes setting Stage portion 421 on floating seal ring 200, the first protrusion 412 can be contacted with stage portion 421 to limit floating seal Ring 200 is far from pedestal 22.In the present embodiment, before not molding to floating seal and lead ring 21 and contacting with each other, compressed spring Floating seal ring 200, which is jacked up to the first protrusion 412, to be contacted with stage portion 421, remote to limit floating seal ring 200 From pedestal 22.

In the other embodiments of the utility model, the first limiting section 410 can also be column construction, strip structure, only Want the first protrusion on the first limiting section 410 that can cooperate with the first auxiliary section 420 separate to limit floating seal ring 200 Pedestal 22.

When mold not yet molds completely (as shown in Figure 4), by being mounted on the effect of 22 upper spring of pedestal, sealing ring and lead ring 21 bottom surfaces contact in advance, and realization seals in advance, to vacuumize in advance.It is very big that meaning is vacuumized in advance, it in most cases, can Preferably the gas of mould inside is extracted out, guarantees that vulcanization vacuumizes the vacuum degree of tire-mold 20, guarantees the surface matter of tire Amount.

Further, sealing device 10 includes the first locating piece 510 and the second locating piece 520, the first locating piece 510 and the Two locating pieces 520 extend along the axial direction for vacuumizing tire-mold 20, on the pedestal 22 that the first locating piece 510 is arranged in, Second locating piece 520 is arranged on lead ring 21, and the first locating piece 510 and the second locating piece 520 can cooperate to limit bottom The relative position of seat 22 and lead ring 21.Specifically, when pedestal 22 and lead ring 21 are close to each other, the first locating piece 510 and second Locating piece 520 is with the position of both restrictions.

First locating piece 510 includes guide pin 512, and guide pin 512 is arranged on pedestal 22, and guide pin 512 is true along taking out The axial direction of empty tire-mold 20 extends, and the second locating piece 520 includes the positioning sleeve 521 being arranged on lead ring 21, positioning sleeve 521 include first through hole 522, and first through hole 522 is prolonged along the axial direction (vertical direction in figure) for vacuumizing tire-mold 20 It stretches, in default clamping process, guide pin 512 can pass through first through hole 522.It vacuumizes formwork positioning method and is designed as guide Formula avoids processing locating notch on lead ring 21 or pedestal 22, to eliminate the damage of sealing ring.

In use, sealing ring and 21 phase interworking of lead ring that the first groove 210 for passing through 200 end of floating seal ring is equipped with It closes, 200 lower part of floating seal ring is connected by elastic device 300 and pedestal 22, in molding, guide pin 512 and positioning sleeve 521 It cooperating, guide pin 512 and positioning seat 511 do not contact directly with sealing ring, it avoids that sealing ring is caused to squeeze and is impacted, It ensure that the effect vacuumized.

Optionally, guide pin 512 is located on pedestal 22 by positioning seat 511, so improves the convenience of processing.

From this figure it can be seen that in the present embodiment, sliding block 25 is provided with scarce close to the bottom of floating seal ring 200 Mouthful.The notch can ensure that during open mold, sliding block 25 will not touch floating seal ring 200, so as to avoid interference, Improve the smooth degree for vacuumizing tire-mold operation.

The sealing device 10 of the present embodiment of the utility model at least has the advantages that

1, can it is existing vacuumize lead ring 21 and pedestal 22 in mold on the basis of be modified, by lead ring 21 Processing installation positioning sleeve 521, processing installation guide pin 512 and positioning seat 511 on pedestal 22, commonly vacuumizes mould to realize The positioning function of tool has saved the cost for re-working, designing new die.

2, it is cooperated by positioning pin c1, positioning sleeve, positioning seat 511 and realizes positioning, it can be to avoid common locating slot The impact of mouthful c2 to first seal 100, improves the service life of first seal 100, reduce replacement sealing element at This.

3, lead ring 21 and pedestal 22 are sealed by end face seal mode, avoid clamping process radial and axial to close Seal causes to impact and squeeze wound.

4,300 support floating sealing ring 200 of elastic device and lead ring 21, which cooperate, realizes sealing, can be to avoid to first Sealing element 100 causes to impact or squeeze wound, reduces maintenance cost.

5, it is connect in advance with 21 bottom of lead ring by 300 support floating sealing ring of elastic device, 200 end first seal 100 Touching, can seal in advance, vacuumize in advance, guarantee tire curing vacuum degree, guarantee the surface quality of tire.

The present embodiment also provides one kind and vacuumizes tire-mold 20 comprising the sealing device 10 of any of the above-described.It takes out true Empty tire-mold 20, including upper hot plate 23, upper cover 24, lead ring 21, sliding block 25, pattern block, gas nozzle 26 is vacuumized, vacuumize gas nozzle 26 can be set in 21 top of lead ring, may also set up on pedestal 22, and wear through the first annular groove 22a.Vacuumizing gas nozzle can With only position is arranged one at one, also can be set multiple.This vacuumize gas nozzle 26 for execute vacuumize tire-mold 20 Vacuum pumping carries out vacuum pumping when sealing ring and 21 bottom surface of lead ring contact in advance, vacuumizes in advance, guarantees vulcanization wheel The vacuum degree of tire.Tire-mold 20 is vacuumized, due to having above-mentioned sealing device 10, also can be avoided sealing ring by mistake The case where degree is squeezed and impacted extends sealing ring service life to protect sealing ring, ensures production efficiency.

Embodiment 2

Fig. 6 is that the embodiments of the present invention 2 provide a kind of schematic diagram of sealing device 10.Fig. 6 is please referred to, it can from figure To find out, the sealing device 10 in the present embodiment is roughly the same, the difference is that, the sealing device 10 in the present embodiment includes Sealing structure between the sealing structure of other positions, such as upper cover 24 and lead ring 21, it is close between sliding block 25 and pedestal 22 Seal structure, the sealing device between the sealing structure and pedestal 22 and lead ring 21 of other positions are joined together, and common is to vacuumize Operation provides sealing, supports the progress of vacuum pumping.

The present embodiment also provides one kind and vacuumizes tire-mold 20 comprising the sealing device 10 of any of the above-described.It takes out true Empty tire-mold 20, including upper cover 24, lead ring 21, sliding block 25, pattern block, gas nozzle 26 is vacuumized, vacuumizing gas nozzle 26 can set It is placed in 21 top of lead ring, may also set up on pedestal 22, and wear through the first annular groove 22a.Vacuumizing gas nozzle can be only one Locate position and be arranged one, also can be set multiple.This vacuumize gas nozzle 26 for execute vacuumize tire-mold 20 and vacuumize behaviour Make, carries out vacuum pumping when sealing ring and 21 bottom surface of lead ring contact in advance, vacuumize in advance, guarantee tire curing vacuum Degree.Vacuumize tire-mold 20, due to having above-mentioned sealing device 10, also can be avoided sealing ring by excessive compression and The case where impact, extends sealing ring service life to protect sealing ring, ensures production efficiency.

Embodiment 3

The present embodiment of the utility model also provides one kind and vacuumizes tire-mold 20 comprising the sealing of any of the above-described Device 10.Tire-mold 20 is vacuumized, due to having above-mentioned sealing device 10, sealing ring is also can be avoided and is excessively squeezed The case where pressure and impact, extends sealing ring service life to protect sealing ring, ensures production efficiency.

Meanwhile the tire-mold 20 provided by the embodiment of the utility model that vacuumizes can be vacuumized in existing non-vacuum of filling It on the basis of tire-mold, is obtained by being simply transformed, carries out vacuum pumping in advance, saved cost, increased production Benefit.

In the present embodiment, the specific embodiment for vacuumizing tire-mold 20 is provided, incorporated by reference to referring to Fig. 4-Fig. 6.Its In, a kind of usage mode for vacuumizing tire-mold 20 is as follows:

Mold is opened by driving flange 27a, integrally starts to mold referring to Fig. 4, central authority 27b；

Referring to Fig. 5, when molding reaches sealing ring and starts to contact 21 bottom surface of lead ring, vacuum pump starts to be by vacuumizing gas Mouth 26 vacuumizes mold, and mold is not fully closed, realizes and shifts to an earlier date vacuuming action, shows vacuum by vacuum meter Degree, to reach the requirement vacuumized；

Referring to Fig. 6, mold molds completely, starts vulcanized tyre.

In the present embodiment, the spring installed by pedestal 22 pushes up floating seal ring 200 to the position of limit plate 411, In the state of not molding completely, sealing ring is just contacted with 21 bottom of lead ring in advance, and realization seals in advance, is vacuumized in advance, with Meet the vacuum degree of vulcanized tyre needs.

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 (18)

1. a kind of sealing device cooperates with the lead ring and pedestal for vacuumizing tire-mold and vacuumizes tyre mould to seal Tool, it is characterised in that:

The sealing device includes first seal, floating seal ring and elastic device；

The pedestal has the first annular groove circumferentially, and the floating seal ring is arranged by the elastic device described the In one annular groove；

The elastic device is configured to supply the elastic force for making the floating seal ring close to the lead ring；

The first seal is located at the floating seal ring close to the end of the lead ring, and the first seal is configured such that The lead ring and the sealing device cooperate to realize sealing.

2. sealing device according to claim 1, it is characterised in that:

The sealing device further includes second seal, and the second seal is arranged in the floating seal ring and described first Between the side wall of annular groove.

3. sealing device according to claim 2, it is characterised in that:

The second seal is arranged on the side wall of the floating seal ring or the second seal is arranged described first On the side wall of annular groove.

4. sealing device according to claim 2, it is characterised in that:

The upper surface of the floating seal ring is provided with the first groove, and the first seal is arranged in first groove.

5. sealing device according to claim 4, it is characterised in that: the cross sectional shape of first groove is trapezoidal or square Shape.

6. sealing device according to claim 5, it is characterised in that: the cross sectional shape of first groove is inverted trapezoidal.

7. sealing device according to claim 4, it is characterised in that: it is recessed that the side wall of the floating seal ring is provided with second Slot；And/or the second groove is provided on the side wall of first annular groove；The second seal is located in second groove.

8. sealing device according to claim 7, it is characterised in that: the cross sectional shape of second groove is trapezoidal or square Shape.

9. sealing device according to claim 8, it is characterised in that: the cross sectional shape of second groove is inverted trapezoidal.

10. sealing device according to claim 1, it is characterised in that:

The elastic device is compressed spring.

11. sealing device according to claim 10, it is characterised in that: the of the pedestal is arranged in the compressed spring In one annular groove.

12. sealing device according to claim 10, it is characterised in that:

The bottom of first annular groove of the pedestal is provided with mounting groove；And/or the bottom of the floating seal ring is provided with cooperation Slot；

The opening of the mounting groove and the mating groove is oppositely arranged；The elastic device is movably disposed in mounting groove and matches It closes in the space that slot encloses.

13. sealing device according to claim 12, it is characterised in that:

The elastic device corresponds to the first center line that the floating seal ring extends along short transverse.

14. sealing device according to claim 1, it is characterised in that:

The sealing device includes the first limiting section and the first auxiliary section；

On the base, first auxiliary section is arranged on the floating seal ring for the first limiting section setting；

First limiting section can be contacted with first auxiliary section to limit the floating seal ring far from the bottom Seat.

15. sealing device according to claim 14, it is characterised in that:

First limiting section includes limit plate；

On the base, the other end of the limit plate is provided with towards the floating for one end fixed setting of the limit plate The first protrusion that sealing ring extends；

First auxiliary section includes the stage portion being arranged on the floating seal ring；

First protrusion can be contacted with the stage portion, to limit the floating seal ring far from the pedestal.

16. sealing device described in any one of -15 according to claim 1, it is characterised in that:

The sealing device includes the first locating piece and the second locating piece；

First locating piece and second locating piece extend along the axial direction for vacuumizing tire-mold；

First locating piece is arranged on the pedestal, and second locating piece is arranged on the lead ring；

First locating piece and second locating piece can cooperate opposite with the lead ring to limit the pedestal Position.

17. sealing device according to claim 16, it is characterised in that:

First locating piece includes guide pin, and the guide pin is arranged on the base, and the guide pin is along the pumping The axial direction of vacuum tire mold extends；

Second locating piece includes positioning sleeve, and the positioning sleeve includes first through hole, and the first through hole vacuumizes described in The axial direction of tire-mold extends；

In default clamping process, the guide pin can pass through the first through hole.

18. one kind vacuumizes tire-mold, it is characterised in that: the tire-mold that vacuumizes includes any in claim 1-17 Sealing device described in.