CN109176988B - Sealing device and vacuumizing tire mold - Google Patents
Sealing device and vacuumizing tire mold Download PDFInfo
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- CN109176988B CN109176988B CN201811401693.XA CN201811401693A CN109176988B CN 109176988 B CN109176988 B CN 109176988B CN 201811401693 A CN201811401693 A CN 201811401693A CN 109176988 B CN109176988 B CN 109176988B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
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- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a sealing device and a vacuum-pumping tire mold. The sealing device is matched with the guide ring and the base of the vacuum-pumping tire mold to seal the vacuum-pumping tire mold, and comprises a first sealing element, a floating sealing ring and an elastic device; the base is provided with a first annular groove which is circumferentially arranged, and the floating sealing ring is arranged in the first annular groove through an elastic device; the elastic device is configured to provide an elastic force for enabling the floating sealing ring to be close to the guide ring; the first sealing element is embedded at the end part of the floating sealing ring close to the guide ring, and the first sealing element is configured to enable the guide ring and the sealing device to be matched with each other to realize sealing effect.
Description
Technical Field
The invention relates to the field of tire vacuumizing molds, in particular to a sealing device and a vacuumizing tire mold.
Background
Fig. 1 is a schematic structural view of an evacuated tire mold in the prior art, fig. 2 is a schematic structural view of an evacuated tire mold in the prior art about to be in a sealed state, and fig. 3 is a schematic structural view of an evacuated tire mold in the prior art in a closed state. As shown in fig. 1, the conventional evacuated tire mold includes a guide ring 21, a base 22, an upper cover 24, a slider 25, an evacuation nozzle 26, a centering mechanism 27b, a bladder 29, a green tire 30, a positioning pin c1, and a positioning notch. The base 22 is circular, and the circumferential edge of the base 22 is provided with a positioning notch. The part of the circumferential edge of the guide ring 21 close to the base is provided with a positioning pin c1, and the positioning pin c1 is matched with the positioning notch when the mold is closed to be sealed, so that the effect of the sealing device is achieved.
The evacuated tire mold seal ring damage is primarily concentrated on the seal ring between the guide ring and the base in the form of a break or damage, primarily during the time the mold is about to seal to the mold closed condition, as shown in fig. 2 and 3. As seen from figure 2, when the mold is closed, the sealing ring is in contact with the base at each time, the precision of the vulcanizing machine is influenced, and the sealing ring is impacted to different degrees when the mold is closed at each time. As can be seen from fig. 3, although the positioning notch is circumferentially and inversely rounded, the sealing ring is still damaged by squeezing to different degrees. Therefore, the sealing ring is repeatedly damaged, and after multiple times of impact and extrusion, the sealing ring can be broken or damaged.
In the production process of the tire, in order to improve the appearance quality of the tire, avoid the surface from being lack of rubber or avoid generating part of raw rubber, a vacuumizing mold is often adopted in the vulcanization process, and the tire is widely applied to the aspect of passenger tires in particular; the existing vacuumizing mould is limited by the structure, so that a sealing ring between a guide ring and a base is broken frequently, and the sealing ring needs to be replaced frequently.
Disclosure of Invention
The first purpose of the invention is to provide a sealing device, which is used for improving the situation that a sealing ring is excessively extruded when a mold is closed.
The second purpose of the invention is to provide a vacuum-pumping tire mold to improve the situation that a sealing ring is excessively extruded when the mold is closed.
The embodiment of the invention is realized by the following technical scheme:
the sealing device is mutually matched with a guide ring and a base of the vacuumizing tire mold to seal the vacuumizing tire mold; the sealing device comprises a first sealing element, a floating sealing ring and an elastic device; the base is provided with a first annular groove arranged circumferentially; the floating sealing ring is arranged in the first annular groove through an elastic device; the elastic device is configured to provide an elastic force for enabling the floating sealing ring to be close to the guide ring; the first sealing element is embedded at the end part of the floating sealing ring close to the guide ring, and the first sealing element is configured to enable the guide ring and the sealing device to be matched with each other to realize sealing effect.
The inventor finds that the vacuumized tire mold designed at present adopts a positioning pin and a positioning notch to realize the sealing process of the guide ring and the base from a mold closing state to a finished state. Because of being influenced by vulcanizer precision, the compound die all can cause the impact to the sealing washer of different degrees at every turn, and the location notch causes crowded hindering of different degrees to the sealing washer. The sealing ring is damaged repeatedly, and after multiple times of impact and extrusion, the sealing ring can be broken or damaged, so that the vacuumizing effect of the die is influenced.
According to the sealing device, the guide ring and the base of the vacuumizing tire mold are matched with each other, the guide ring and the base are in an end face sealing mode, the sealing ring arranged through the first groove in the end portion of the floating sealing ring is matched with the guide ring, and the lower portion of the floating sealing ring is connected with the base through the elastic device.
In conclusion, the sealing device is simple in design and complete in function, can well improve the phenomenon that the sealing ring is damaged and impacted when the vacuumizing tire mold is closed, and ensures the vacuumizing effect of the vacuumizing tire mold; thereby ensuring the quality of the tire produced by the vacuumized tire mold.
Further, the sealing device also comprises a second sealing element, and the second sealing element is arranged between the floating sealing ring and the side wall of the first annular groove;
preferably, the second seal is provided on a side wall of the floating seal ring or the second seal is provided on a side wall of the first ring groove.
Further, a first groove is formed in the upper end face of the floating seal ring, and a first sealing element is arranged in the first groove;
the cross section of the first groove is trapezoidal or rectangular, preferably inverted trapezoidal;
preferably, the side wall of the floating seal ring is provided with a second groove; and/or a second groove is arranged on the side wall of the first ring groove; the second sealing element is arranged in the second groove;
the cross-sectional shape of the second groove is trapezoidal or rectangular, preferably inverted trapezoidal.
Further, the elastic device is a compression spring, and preferably, the compression spring is arranged in the first annular groove of the base.
Further, the sealing device comprises a first limiting part and a first matching part;
the first limiting part is arranged on the base, and the first matching part is arranged on the floating sealing ring;
the first limiting portion can be in butt fit with the first matching portion to limit the floating sealing ring to be far away from the base.
Further, the first limiting part comprises a limiting plate;
one end of the limiting plate is fixedly arranged on the base, and the other end of the limiting plate is provided with a first bulge extending towards the floating sealing ring;
the first matching part comprises a step part arranged on the floating sealing ring;
the first protrusion can be in butt fit with the step portion to limit the floating seal ring from being far away from the base.
Further, the bottom of the first ring groove of the base is provided with an installation groove; and/or the bottom of the floating seal ring is provided with a matching groove;
the mounting groove is opposite to the opening of the matching groove; the elastic device is movably arranged in a space enclosed by the mounting groove and the matching groove;
preferably, the elastic means corresponds to a first centerline of the floating seal ring extending in the height direction.
Further, the sealing device comprises a first positioning piece and a second positioning piece;
the first positioning piece and the second positioning piece extend along the axial direction of the vacuumizing tire mold;
the first positioning piece is arranged on the base, and the second positioning piece is arranged on the guide ring;
the first positioning member and the second positioning member can cooperate to define the relative position of the base and the guide ring. .
Further, the first positioning piece comprises a guide pin, the guide pin is arranged on the base, and the guide pin extends along the axial direction of the vacuum-pumping tire mold;
the second positioning piece comprises a positioning sleeve, the positioning sleeve comprises a first through hole, and the first through hole extends along the axial direction of the vacuum-pumping tire mold;
in the preset die assembly process, the guide pin can penetrate through the first through hole.
An evacuated tyre mould comprising a sealing device according to any of the preceding claims.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:
the sealing device provided by the embodiment of the invention comprises a first sealing element, a floating sealing ring and an elastic device. The first sealing element in the first groove on the floating sealing ring is matched with the guide ring when the die is closed, the floating sealing ring is connected with the base through the elastic device, the first sealing element can be protected, and the first sealing element is guaranteed not to be impacted by overlarge strength. The positioning is realized through the mutual matching of the positioning seat, the guide pin and the positioning sleeve, and the first sealing element is ensured not to be extruded. Thereby protecting the sealing ring, prolonging the service life of the sealing ring and ensuring the vacuumizing effect of the mould.
The vacuumizing tire mold provided by the embodiment of the invention is provided with the sealing device, so that the situations of excessive extrusion and impact of the sealing ring can be avoided, the sealing ring is protected, the service life of the sealing ring is prolonged, and the production efficiency is guaranteed.
Meanwhile, the vacuum-pumping tire mold provided by the embodiment of the invention can be obtained by simple transformation on the basis of the existing vacuum-pumping tire mold, so that the cost is saved, and the production benefit is increased; in the die closing process, the vacuumizing operation can be performed in advance, and the gas in the die can be better guaranteed to be pumped out.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a first prior art evacuated tire mold configuration;
FIG. 2 is a second schematic representation of a prior art evacuated tire mold;
FIG. 3 is a schematic view of a third prior art evacuated tire mold configuration;
FIG. 4 is a first structural schematic view of an evacuated tire mold provided in accordance with an embodiment of the present invention;
FIG. 5 is a second schematic diagram of an evacuated tire mold provided in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view of a third configuration of an evacuated tire mold according to an embodiment of the present invention;
FIG. 7 provides an enlarged view of a portion of a sealing device according to an embodiment of the present invention.
Icon: c 1-locating pins; c 2-locating notch; 10-sealing means; 100-a first seal; 110-a second seal; 200-a floating seal ring; 210-a first groove; 220-mating grooves; 240-a second groove; 300-a resilient means; 410-a first limit part; 411-limiting plate; 412-a first bump; 420-a first mating portion; 421-a step portion; 510-a first positioning element; 511-positioning seats; 512-guide pin; 520-a second positioning element; 521-a positioning sleeve; 522 — a first via; 20-vacuumizing the tire mold; 21-a guide ring; 22-a base; 22 a-a first ring groove; 22 b-a mounting groove; 23-upper hot plate; 24-an upper cover; 25-a slide block; 26-vacuumizing air nozzle; 27 a-a drive flange; 27 b-a centering mechanism; 29-capsule; 30-embryo.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the terms are only used for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 4 to 7, a sealing device 10, which cooperates with a guide ring 21 and a base 22 of an evacuated tire mold 20 to seal the evacuated tire mold 20, includes a first sealing member 100, a floating seal ring 200, and an elastic device 300.
The base 22 has a first circumferential groove 22a arranged circumferentially; the floating seal ring 200 is disposed in the first ring groove 22a by the elastic means 300; elastic means 300 is configured to provide an elastic force that brings floating seal ring 200 close to guide ring 21; the first seal 100 is embedded in the end of the floating seal ring 200 close to the guide ring 21, and the first seal 100 is configured to cooperate with the guide ring 21 and the sealing device 10 to achieve a sealing effect.
Preferably, the first seal 100 is provided on the upper end surface of the floating seal ring 200. Specifically, the upper end surface of the floating seal ring 200 is provided with a first groove 210; the first seal 100 is disposed in the first groove 210. The cross-sectional shape of the first groove 210 is trapezoidal or rectangular, preferably inverted trapezoidal.
It should be noted that the first seal 100 may also be disposed on the guide ring 21 at a position opposite to the floating seal ring 200; alternatively, a groove may be formed on the guide ring 21 to be aligned with the first seal 100, and the first seal 100 may be disposed in the groove, as long as it is disposed between the floating seal ring 200 and the guide ring 21 to seal the guide ring 21 and the sealing device 10.
Further, the sealing device 10 further includes a second seal 110, and the second seal 110 is disposed between the floating seal ring 200 and a sidewall of the first ring groove 22 a. Thus, the sealing performance between the floating seal ring 200 and the first ring groove 22a is ensured, and the sealing performance of the sealing device 10 is further improved. Preferably, the second seal 110 is disposed on a sidewall of the floating seal ring 200, or the second seal 110 is disposed on a sidewall of the first ring groove 22 a.
Preferably, the sidewall of floating seal ring 200 is provided with a second groove 240; and/or, a second groove 240 is arranged on the side wall of the first ring groove 22 a; the second seal 110 is disposed in the second groove 240; the cross-sectional shape of the second groove 240 is trapezoidal or rectangular, preferably inverted trapezoidal.
In the present embodiment, the second seal member 110 is provided on the side wall radially inside the first ring groove 22 a. Specifically, the second seal 110 is embedded in the second groove 240, and the second seal 110 abuts against the sidewall of the floating seal ring 200.
It should be noted that, in other embodiments of the present invention, the second groove 240 may also be provided on a side wall of the radially outer side of the first ring groove 22a or on a side wall of the floating seal ring 200 (provided on the side wall of the floating seal ring 200 has an advantage of convenience in machining), as long as the second seal 110 can achieve sealing between the floating seal ring 200 and the first ring groove 22 a.
It should be noted that, in the present embodiment, the cross-sectional shapes of the first groove 210 and the second groove 240 are trapezoidal or rectangular, preferably inverted trapezoidal, so as to improve the tightness of the connection between the grooves (the first groove 210 and the second groove 240) and the seals (the first seal 100 and the second seal 110).
The first seal 100 and the second seal 110 are sealing rings, preferably O-rings, which are easy to install. When receiving the pressing force from the guide ring 21 during the mold clamping process, the guide ring can be well matched with the groove (the first groove 210 or the second groove 240), and is not easy to be separated from the first groove 210 along with the opening and closing of the guide ring 21 during the use.
Further, the elastic means 300 is a compression spring, and preferably, the compression spring is disposed in the first ring groove 22a of the base 22.
As can also be seen from the figure, the bottom of the first ring groove 22a of the base 22 is provided with a mounting groove 22b, and the bottom of the floating seal ring 200 is provided with a mating groove 220; the mounting groove 22b is arranged opposite to the opening of the fitting groove 220; the elastic means 300 is movably disposed in a space enclosed by the mounting groove 22b and the fitting groove 220. In this manner, the up and down movement of floating seal ring 200 can be achieved. Preferably, elastic means 300 corresponds to a first center line of floating seal ring 200 extending in the height direction, which ensures that the elastic force applied by elastic means 300 can be applied in the height direction of floating seal ring 200, ensuring the stability of the movement of floating seal ring 200. It is of course also possible to provide the mounting groove 22b only at the bottom of the first ring groove 22a or the fitting groove 220 only at the bottom of the floating seal ring 200.
Optionally, the elastic device 300 includes two springs, two mounting grooves 22b are disposed in the corresponding first ring groove 22a, the springs are in telescopic motion in the two mounting grooves 22b, the number of the springs and the mounting grooves 22b in the circumferential direction is only required to ensure that the elastic force generated by the springs jacks up the floating seal ring 200, and may be more than 3, preferably 4 to 8, the springs are uniformly distributed on the base 22 in the circumferential direction, so that the force of the floating seal member is uniform, and the side deviation is not generated. When the floating seal is not molded until the floating seal and the guide ring 21 contact each other, the compression spring is in an extended state to jack up the floating seal ring 200, and the first limit portion 410 is abutted and engaged with the first engagement portion 420.
In other embodiments of the present invention, the elastic device 300 may be any one of a rubber, a pneumatic elastic structure, and so on, which is merely an example.
Further, the sealing device 10 includes a first limiting portion 410 and a first matching portion 420, the first limiting portion 410 is disposed on the base 22, the first matching portion 420 is disposed on the floating seal ring 200, and the first limiting portion 410 can be abutted and matched with the first matching portion 420 to limit the floating seal ring 200 to be away from the base 22. In this embodiment, the first position-limiting portion 410 can limit the floating seal ring 200 to be away from the base 22 by a certain distance, that is, the floating seal ring 200 has a certain position-limiting stroke under the abutting engagement between the first position-limiting portion 410 and the first engaging portion 420, and in the position-limiting stroke, the floating seal ring 200 can move under the pressure of the guide ring 21 and the elastic force of the spring. The distance is adjusted and set according to the need of the vacuumizing timing in advance.
Further, first spacing portion 410 is limiting plate 411, and the one end of limiting plate 411 is fixed to be set up on base 22, and the limiting plate 411 other end is provided with the first arch 412 that extends towards floating seal ring 200, and first cooperation portion 420 is including setting up step portion 421 on floating seal ring 200, and first arch 412 can cooperate in order to restrict floating seal ring 200 and keep away from base 22 with step portion 421 butt. In the present embodiment, before the floating seal and the guide ring 21 are not molded until they contact each other, the compression spring pushes up the floating seal ring 200 until the first protrusion 412 can be in abutting engagement with the step portion 421 to limit the floating seal ring 200 from moving away from the base 22.
In other embodiments of the present invention, the first position-limiting portion 410 may also be a column structure or a bar structure, as long as the first protrusion on the first position-limiting portion 410 can cooperate with the first cooperating portion 420 to limit the floating seal ring 200 from moving away from the base 22.
When the mould is not completely closed (as shown in figure 4), the sealing ring is in contact with the bottom surface of the guide ring 21 in advance by the action of a spring arranged on the base 22, so that advanced sealing is realized, and therefore advanced vacuum pumping is realized. The significance of vacuumizing in advance is great, and under most conditions, the air in the mold can be better pumped out, so that the vacuum degree of the vulcanization vacuumizing tire mold 20 is ensured, and the surface quality of the tire is ensured.
Further, the sealing device 10 includes a first positioning member 510 and a second positioning member 520, the first positioning member 510 and the second positioning member 520 both extend along the axial direction of the evacuated tire mold 20, the first positioning member 510 is disposed on the base 22, the second positioning member 520 is disposed on the guide ring 21, and the first positioning member 510 and the second positioning member 520 can cooperate with each other to define the relative position of the base 22 and the guide ring 21. Specifically, when the base 22 and the guide ring 21 are close to each other, the first positioning member 510 and the second positioning member 520 define the positions of the two. .
The first positioning member 510 includes a guide pin 512, the guide pin 512 is disposed on the base 22, and the guide pin 512 extends along an axial direction of the evacuated tire mold 20, the second positioning member 520 includes a positioning sleeve 521 disposed on the guide ring 21, the positioning sleeve 521 includes a first through hole 522, the first through hole 522 extends along the axial direction (vertical direction in the drawing) of the evacuated tire mold 20, and the guide pin 512 can pass through the first through hole 522 during the preset mold closing process. The positioning mode of the vacuumizing mould shell is designed to be a pin sleeve type, so that a positioning notch is prevented from being processed on the guide ring 21 or the base 22, and the damage to the sealing ring is eliminated.
When the floating sealing ring is used, the sealing ring arranged in the first groove 210 at the end part of the floating sealing ring 200 is matched with the guide ring 21, the lower part of the floating sealing ring 200 is connected with the base 22 through the elastic device 300, the guide pin 512 is matched with the positioning sleeve 521 during die assembly, the guide pin 512 and the positioning seat 511 are not in direct contact with the sealing ring, extrusion and impact on the sealing ring are avoided, and the vacuumizing effect is ensured.
Optionally, the guide pin 512 is disposed on the base 22 through the positioning seat 511, so as to improve the convenience of processing.
It can also be seen that in this embodiment, slider 25 is notched near the bottom of floating seal ring 200. This breach can ensure opening and shutting the mould in-process, and slider 25 can not touch floating seal ring 200 to avoid interfering, improved the smooth and easy degree of evacuation tire mould operation.
The sealing device 10 of the present embodiment of the invention has at least the following advantages:
1. the guide ring 21 and the base 22 in the existing vacuum-pumping mould can be changed, the positioning sleeve 521 is processed and installed on the guide ring 21, and the guide pin 512 and the positioning seat 511 are processed and installed on the base 22, so that the positioning function of the common vacuum-pumping mould is realized, and the cost for reprocessing and designing a new mould is saved.
2. Through locating pin c1, position sleeve, positioning seat 511 mutually support and realize the location, can avoid the impact of ordinary location notch c2 to first sealing member 100, improved the life of first sealing member 100, reduced the cost of changing the sealing member.
3. The guide ring 21 and the base 22 are sealed in an end face sealing mode, so that impact and extrusion damage to the sealing ring in the radial direction and the axial direction in the die assembly process are avoided.
4. The elastic device 300 supports the floating seal ring 200 and the guide ring 21 to cooperate with each other to realize sealing, so that impact or extrusion damage to the first seal member 100 can be avoided, and the maintenance cost is reduced.
5. The first sealing element 100 at the end part of the floating sealing ring 200 supported by the elastic device 300 is contacted with the bottom of the guide ring 21 in advance, so that sealing can be performed in advance, vacuum pumping is performed in advance, the vacuum degree of a vulcanized tire is guaranteed, and the surface quality of the tire is guaranteed.
The present embodiment also provides an evacuated tire mold 20 including the sealing device 10 of any of the above. The vacuum tire mold 20 includes an upper cover 24, a guide ring 21, a slider 25, a pattern block, and a vacuum nozzle 26, wherein the vacuum nozzle 26 may be disposed on the upper portion of the guide ring 21, or on the base 22, and penetrates through the first ring groove 22 a. The vacuum pumping air nozzle can be arranged at one position or a plurality of positions. The vacuumizing air tap 26 is used for performing vacuumizing operation of the vacuumizing tire mold 20, and vacuumizing operation is performed when the sealing ring is in contact with the bottom surface of the guide ring 21 in advance, so that vacuumizing is performed in advance, and the vacuum degree of a vulcanized tire is guaranteed. The vacuumized tire mold 20 is provided with the sealing device 10, so that the situation that the sealing ring is excessively extruded and impacted can be avoided, the sealing ring is protected, the service life of the sealing ring is prolonged, and the production efficiency is guaranteed.
Example 2
Fig. 6 is a schematic view of a sealing device 10 according to embodiment 2 of the present invention. Referring to fig. 6, it can be seen that the sealing device 10 of the present embodiment is substantially the same, except that the sealing device 10 of the present embodiment includes other sealing structures, such as the sealing structure between the upper cover 24 and the guide ring 21, the sealing structure between the slider 25 and the base 22, and the other sealing structures in combination with the sealing structure between the base 22 and the guide ring 21, to provide a seal for the vacuuming operation and support the vacuuming operation.
The present embodiment also provides an evacuated tire mold 20 including the sealing device 10 of any of the above. The vacuum tire mold 20 includes an upper cover 24, a guide ring 21, a slider 25, a pattern block, and a vacuum nozzle 26, wherein the vacuum nozzle 26 may be disposed on the upper portion of the guide ring 21, or on the base 22, and penetrates through the first ring groove 22 a. The vacuum pumping air nozzle can be arranged at one position or a plurality of positions. The vacuumizing air tap 26 is used for performing vacuumizing operation of the vacuumizing tire mold 20, and vacuumizing operation is performed when the sealing ring is in contact with the bottom surface of the guide ring 21 in advance, so that vacuumizing is performed in advance, and the vacuum degree of a vulcanized tire is guaranteed. The vacuumized tire mold 20 is provided with the sealing device 10, so that the situation that the sealing ring is excessively extruded and impacted can be avoided, the sealing ring is protected, the service life of the sealing ring is prolonged, and the production efficiency is guaranteed.
Example 3
The present embodiment of the invention also provides an evacuated tire mold 20 comprising the sealing device 10 of any of the above. The vacuumized tire mold 20 is provided with the sealing device 10, so that the situation that the sealing ring is excessively extruded and impacted can be avoided, the sealing ring is protected, the service life of the sealing ring is prolonged, and the production efficiency is guaranteed.
Meanwhile, the vacuumized tire mold 20 provided by the embodiment of the invention can be obtained by simple transformation on the basis of the existing non-vacuumized tire mold, and the vacuumization operation is carried out in advance, so that the cost is saved, and the production benefit is increased.
In the present embodiment, a specific implementation of the vacuumized tire mold 20 is provided, please refer to fig. 4-6 in combination. One use of the evacuated tire mold 20 is as follows:
referring to fig. 4, the center mechanism 27b opens the mold by driving the flange 27a, and the entire mold starts to be clamped;
referring to fig. 5, when the sealing ring starts to contact the bottom surface of the guide ring 21 during mold closing, the vacuum pump starts to vacuumize the mold through the vacuum nozzle 26, the mold is not completely closed, the vacuum pumping action is realized in advance, and the vacuum degree is displayed through the vacuum meter so as to meet the requirement of vacuum pumping;
referring to fig. 6, the mold is fully closed and curing of the tire begins.
In this embodiment, through the spring of base 22 installation, top floating seal ring 200 to limiting plate 411's position, under the state of complete compound die not, the sealing washer just contacts in advance with guide ring 21 bottom, realizes sealing in advance, and the evacuation in advance to satisfy the vacuum degree that vulcanizes the tire needs.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (18)
1. The utility model provides a sealing device, its guide ring and the base with evacuation tire mold mutually support in order to seal evacuation tire mold which characterized in that:
the sealing device comprises a first sealing element, a floating sealing ring and an elastic device;
the base is provided with a first annular groove which is circumferentially arranged, and the floating sealing ring is arranged in the first annular groove through the elastic device;
the elastic device is configured to provide an elastic force for enabling the floating seal ring to be close to the guide ring;
the first sealing element is arranged at the end part of the floating sealing ring close to the guide ring, and the first sealing element is configured to enable the guide ring and the sealing device to be matched with each other to realize sealing.
2. The sealing device of claim 1, wherein:
the sealing device further includes a second seal disposed between the floating seal ring and the sidewall of the first ring groove.
3. The sealing device of claim 2, wherein:
the second sealing element is arranged on the side wall of the floating sealing ring, or the second sealing element is arranged on the side wall of the first annular groove.
4. The sealing device of claim 2, wherein:
the upper end face of the floating sealing ring is provided with a first groove, and the first sealing element is arranged in the first groove.
5. The sealing device of claim 4, wherein:
the cross section of the first groove is trapezoidal or rectangular.
6. The sealing device of claim 5, wherein:
the cross section of the first groove is in an inverted trapezoid shape.
7. The sealing device of claim 4, wherein:
a second groove is formed in the side wall of the floating sealing ring; and/or a second groove is arranged on the side wall of the first ring groove; the second seal is disposed in the second groove.
8. The sealing device of claim 7, wherein: the cross section of the second groove is trapezoidal or rectangular.
9. The sealing device of claim 8, wherein:
the cross section of the second groove is in an inverted trapezoid shape.
10. The sealing device of claim 1, wherein:
the elastic device is a compression spring.
11. The sealing device of claim 10, wherein: the compression spring is disposed in the first ring groove of the base.
12. The sealing device of claim 10, wherein:
the bottom of the first ring groove of the base is provided with an installation groove; and/or the bottom of the floating sealing ring is provided with a matching groove;
the mounting groove is opposite to the opening of the matching groove; the elastic device can be movably arranged in a space enclosed by the mounting groove and the matching groove.
13. The sealing device of claim 12, wherein: the elastic device corresponds to a first central line extending along the height direction of the floating sealing ring.
14. The sealing device of claim 1, wherein:
the sealing device comprises a first limiting part and a first matching part;
the first limiting part is arranged on the base, and the first matching part is arranged on the floating sealing ring;
the first limiting portion can be in butt fit with the first matching portion to limit the floating sealing ring to be far away from the base.
15. The sealing device of claim 14, wherein:
the first limiting part comprises a limiting plate;
one end of the limiting plate is fixedly arranged on the base, and the other end of the limiting plate is provided with a first bulge extending towards the floating sealing ring;
the first fitting portion includes a stepped portion provided on the floating seal ring;
the first protrusion can be in butt fit with the step part to limit the floating sealing ring to be far away from the base.
16. The sealing device of any one of claims 1-15, wherein:
the sealing device comprises a first positioning piece and a second positioning piece;
the first positioning piece and the second positioning piece extend along the axial direction of the vacuum-pumping tire mold;
the first positioning piece is arranged on the base, and the second positioning piece is arranged on the guide ring;
the first positioning part and the second positioning part can be mutually matched to limit the relative position of the base and the guide ring.
17. The sealing device of claim 16, wherein:
the first positioning piece comprises a guide pin, the guide pin is arranged on the base, and the guide pin extends along the axial direction of the vacuum-pumping tire mold;
the second positioning piece comprises a positioning sleeve, the positioning sleeve comprises a first through hole, and the first through hole extends along the axial direction of the vacuum-pumping tire mold;
during the preset mold closing process, the guide pin can penetrate through the first through hole.
18. An evacuation tire mould which characterized in that: the evacuated tire mold comprising the sealing device of any one of claims 1-17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401693.XA CN109176988B (en) | 2018-11-22 | 2018-11-22 | Sealing device and vacuumizing tire mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401693.XA CN109176988B (en) | 2018-11-22 | 2018-11-22 | Sealing device and vacuumizing tire mold |
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| Publication Number | Publication Date |
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| CN109176988A CN109176988A (en) | 2019-01-11 |
| CN109176988B true CN109176988B (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811401693.XA Active CN109176988B (en) | 2018-11-22 | 2018-11-22 | Sealing device and vacuumizing tire mold |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4180215A3 (en) | 2021-11-15 | 2023-06-28 | The Goodyear Tire & Rubber Company | Tire molding process |
| EP4180216A3 (en) | 2021-11-15 | 2023-07-19 | The Goodyear Tire & Rubber Company | Tire mold for ventless tire molding |
| CN115257034B (en) * | 2022-09-28 | 2023-01-31 | 山东豪迈机械科技股份有限公司 | Vacuum-pumping segmented mold |
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|---|---|---|---|---|
| CN102278482A (en) * | 2011-06-23 | 2011-12-14 | 北京化工大学 | Mechanical seal device with stress self adaption |
| CN107443627A (en) * | 2017-08-10 | 2017-12-08 | 山东豪迈机械科技股份有限公司 | Vacuumize tyre adjustable die |
| CN209365138U (en) * | 2018-11-22 | 2019-09-10 | 山东豪迈机械科技股份有限公司 | A kind of sealing device and vacuumize tire-mold |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0983834B1 (en) * | 1998-09-03 | 2002-12-18 | Société de Technologie Michelin | Mould for flat treads |
| CN202895523U (en) * | 2012-10-13 | 2013-04-24 | 汕头天阳模具有限公司 | Vacuum-type tyre invgorating module |
| CN106286291B (en) * | 2016-10-21 | 2018-05-18 | 宁波邦威泵业有限公司 | Rotor pump shaft sealing device |
| CN107053717B (en) * | 2016-12-29 | 2023-06-06 | 山东豪迈机械科技股份有限公司 | Vacuum-pumping tire segmented mold |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278482A (en) * | 2011-06-23 | 2011-12-14 | 北京化工大学 | Mechanical seal device with stress self adaption |
| CN107443627A (en) * | 2017-08-10 | 2017-12-08 | 山东豪迈机械科技股份有限公司 | Vacuumize tyre adjustable die |
| CN209365138U (en) * | 2018-11-22 | 2019-09-10 | 山东豪迈机械科技股份有限公司 | A kind of sealing device and vacuumize tire-mold |
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| CN109176988A (en) | 2019-01-11 |
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