CN102313057B - Improved pore-free tire mould exhaust valve - Google Patents
Improved pore-free tire mould exhaust valve Download PDFInfo
- Publication number
- CN102313057B CN102313057B CN2011102424118A CN201110242411A CN102313057B CN 102313057 B CN102313057 B CN 102313057B CN 2011102424118 A CN2011102424118 A CN 2011102424118A CN 201110242411 A CN201110242411 A CN 201110242411A CN 102313057 B CN102313057 B CN 102313057B
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- sealing surface
- exhaust
- valve rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0606—Vulcanising moulds not integral with vulcanising presses
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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
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0606—Vulcanising moulds not integral with vulcanising presses
- B29D2030/0607—Constructional features of the moulds
- B29D2030/0617—Venting devices, e.g. vent plugs or inserts
Abstract
The invention discloses an improved pore-free tire mould exhaust valve, which is arranged on a tire forming mould exhaust hole and comprises a valve body, wherein a valve core is sleeved in the valve body and comprises a valve head; the valve head is arranged at the end of the valve core close to the cavity of a tire forming mould; the rear end of the valve head is fixedly provided with a valve rod; the rear end of the valve rod is fixedly provided with a valve rod fixing seat; the valve head and the valve body are provided with a valve head sealing surface and a valve body sealing surface which are matched with each other respectively; an exhaust cavity is formed between the valve rod and the valve body; the valve rod fixing seat is fixedly connected with the valve body; the valve body and/or the valve rod fixing seat are/is provided with an exhaust passage for communicating the exhaust cavity with exterior; the thermal expansion coefficient of the valve rod is greater than that of the valve body; at normal temperature, the valve head sealing surface is attached to the valve body sealing surface; at tire forming temperature, an exhaust gap is formed between the valve head sealing surface and the valve body sealing surface; the thermal extension of the valve rod is greater than that of the valve body to form an exhaust gap; and thus, exhaust control is realized, and the valve is difficult to fatigue, stable and reliable, and easier to assemble.
Description
Technical field
The present invention relates to the tire mold field, relate in particular to a kind of outlet valve of pore-free tire mold.
Background technique
Tire need be discharged the gas in the tire forming mold inner chamber in sulfidation, makes rubber be full of die cavity fully; If there is residual gas to accumulate, will there be defective in the tyre tread after the moulding, so on the tire mold a plurality of exhaust ports is set usually; With the smooth moulding of assurance tire, but when tyre vulcanization, a small amount of sizing material can overflow from exhaust port; Form a rule tree lace at the tire finished surface; Increased the materials consumption that tire is made on the one hand, the pruning to tree lace has also increased machining period on the other hand, has influenced manufacturing efficiency.
As shown in Figure 5, available technology adopting spring 12 is as the outlet valve of elastic element, the exhaust phase in the tire building process; Outlet valve stays open under the effect of spring 12, has exhaust clearance 11 between valve head 5 and the valve body 1, when exhaust finishes; After sizing material is full of the tire forming mold inner chamber; Sizing material presses spool 3 motions, and exhaust valve closure is accomplished tire building.Because the frequent compression and the stretching of spring; Fatigue takes place in the working procedure easily, and the operating ambient temperature of spring is higher, the elastic parameter of spring constantly changes; Make the exhaust clearance between outlet valve valve head and the valve body to control; The conformity variation of all outlet valves makes solation go out easily during the moulding tire, the quality of moulding tire also reduces greatly; And these spring rows air valve matching requirements are higher, and maintenance is difficulty very, are difficult to guarantee that the exhaust clearance of a plurality of outlet valves is consistent, cause that the exhaust velocity of each outlet valve differs in exhaust process; Outlet valve stayed open when mould cleaned, and dust gets in the outlet valve with other foreign material easily, causes the inefficacy of outlet valve.
Summary of the invention
Technical problem to be solved by this invention provide a kind of can effectively avoid in the sulfidation exhaust time sizing material overflow and the improved pore-free tire mold of stable and reliable operation outlet valve.
For solving the problems of the technologies described above, technological scheme of the present invention is: improved pore-free tire mold outlet valve is installed on the tire forming mold exhaust port; Comprise valve body, be set with spool in the said valve body, said spool comprises valve head; Said valve head is located at the end of said spool near said tire forming mold inner chamber; Said valve head rear end is fixed with valve rod, and the rear end of said valve rod is fixed with the valve rod fixed base, is respectively equipped with valve head sealing surface and the valve body sealing surface that cooperatively interacts on said valve head and the said valve body; Be provided with exhaust cavity between said valve rod and the said valve body; Said valve rod fixed base is fixedly connected with valve body, and said valve body and/or said valve rod fixed base are provided with and are communicated with said exhaust cavity and extraneous exhaust passage, and the thermal expansion coefficient of said valve rod is greater than the thermal expansion coefficient of said valve body; Said at normal temperatures valve head sealing surface and said valve body sealing surface are fitted, and are forming exhaust clearance between said valve head sealing surface and the said valve body sealing surface under the tire building temperature.
As optimized technical scheme, said exhaust clearance is 0.02mm-0.03mm.
As optimized technical scheme, said valve head sealing surface and said valve body sealing surface are the conical surface that cooperatively interacts.
As optimized technical scheme, said valve head, said valve rod and said valve rod fixed base are integral structure.
As optimized technical scheme, said valve body is a stainless steel body, and said spool is the aluminum alloy spool.
As optimized technical scheme, said exhaust passage comprises the relief opening that is arranged on said body wall, is provided with between said valve body outer side wall and the said exhaust port to be communicated with said relief opening and extraneous space.
Owing to adopted technique scheme, improved pore-free tire mold outlet valve is installed on the tire forming mold exhaust port; Comprise valve body, be set with spool in the said valve body, said spool comprises valve head; Said valve head is located at the end of said spool near said tire forming mold inner chamber; Said valve head rear end is fixed with valve rod, and the rear end of said valve rod is fixed with the valve rod fixed base, is respectively equipped with valve head sealing surface and the valve body sealing surface that cooperatively interacts on said valve head and the said valve body; Be provided with exhaust cavity between said valve rod and the said valve body; Said valve rod fixed base is fixedly connected with valve body, and said valve body and/or said valve rod fixed base are provided with and are communicated with said exhaust cavity and extraneous exhaust passage, and the thermal expansion coefficient of said valve rod is greater than the thermal expansion coefficient of said valve body; Said at normal temperatures valve head sealing surface and said valve body sealing surface are fitted, and are forming exhaust clearance between said valve head sealing surface and the said valve body sealing surface under the tire building temperature; The thermal expansion coefficient of valve rod is greater than the thermal expansion coefficient of said valve body; In sulfidation under 155 ℃ to 200 ℃ the high temperature; The elongation of valve stem forms exhaust clearance between valve head and the valve body, and the gas in the tire forming mold inner chamber can be discharged through the exhaust clearance between said valve head and the said valve body at this moment; Rely on the physical property of valve rod and valve body; Be that the valve rod elongation that is heated forms the exhaust clearance between valve head and the valve body greater than the valve body elongation that is heated, realize that exhaust control does not need other elastic element, is difficult for taking place tired, reliable and stable; Be more prone to assembling; Only need valve core housing is contained in the valve body; Valve head sealing surface and valve body sealing surface are fitted each other, valve rod fixed base and valve body are fixed get final product, need not as adopting spring is that the mensuration that the outlet valve of elastic element carries out exhaust clearance is earlier assembled again; The exhaust clearance that can guarantee a plurality of outlet valves is consistent, makes that the exhaust velocity of each outlet valve is synchronous in exhaust process.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the enlarged view at I place among Fig. 1;
Fig. 3 is the installment state schematic representation of the embodiment of the invention;
Fig. 4 is an embodiment of the invention exhaust valve closure view;
Fig. 5 is the structural representation of existing design in the background technique;
Among the figure: the 1-valve body; The 2-exhaust port; The 3-valve head; The 4-valve rod; 5-valve rod fixed base; 6-valve head sealing surface; The 7-valve body sealing surface; The 8-exhaust cavity; The 9-relief opening; The 10-space; The 11-exhaust clearance; The 12-spring; The 13-tire forming mold.
Embodiment
Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, improved pore-free tire mold outlet valve is installed on the tire forming mold exhaust port 2; Comprise valve body 1; Be set with spool in the said valve body 1, said spool comprises valve head 3, and said valve head 3 is located at the end of said spool near said tire forming mold 13 inner chambers; Said valve head 3 rear ends are fixed with valve rod 4, and the rear end of said valve rod 4 is fixed with valve rod fixed base 5.In the present embodiment, said valve head 3, said valve rod 4 and said valve rod fixed base 5 are integral structure.
Be respectively equipped with the valve head sealing surface 6 and valve body sealing surface 7 that cooperatively interact on said valve head 3 and the said valve body 1, said valve head sealing surface 6 and the conical surface of said valve body sealing surface 7 for cooperatively interacting; Be provided with exhaust cavity 8 between said valve rod 4 and the said valve body 1; Said valve rod fixed base 5 and valve body 1 are fixedly connected through interference fit; Said valve body 1 is provided with and is communicated with said exhaust cavity 8 and extraneous exhaust passage; Said exhaust passage comprises the relief opening 9 that is arranged on said valve body 1 sidewall, is provided with between said valve body 1 outer side wall and the said exhaust port 2 to be communicated with said relief opening 9 and extraneous space 10.Certainly, said exhaust passage can also be arranged on the said valve rod fixed base, and said exhaust passage is passed the valve rod fixed base and is communicated with said exhaust cavity with extraneous, and perhaps said exhaust passage is arranged on the connecting part of said valve rod fixed base and said body cavity.
The thermal expansion coefficient of said valve rod 4 is greater than the thermal expansion coefficient of said valve body 1; The two assembles at normal temperatures; Said valve head sealing surface 6 is fitted with said valve body sealing surface 7; Forming exhaust clearance 11 under the tire building temperature between said valve head sealing surface 6 and the said valve body sealing surface 7, said exhaust clearance 11 is 0.02mm-0.03mm; Said valve body 1 is a stainless steel body, and said spool is the aluminum alloy spool.
The thermal expansion coefficient of valve rod 4 is greater than the thermal expansion coefficient of said valve body 1; In sulfidation under 155 ℃ to 200 ℃ the high temperature; Valve rod 4 elongations form exhaust clearance 11 between valve head 3 and the valve body 1, the gas in the tire forming mold inner chamber can be discharged through the exhaust clearance between said valve head and the said valve body 11 at this moment; Rely on the physical property of valve rod 4 and valve body 1; Be that the valve rod elongation that is heated forms the exhaust clearance between valve head and the valve body greater than the valve body elongation that is heated, realize that exhaust control does not need other elastic element, is difficult for taking place tired, reliable and stable; Be more prone to assembling; Only need valve core housing is contained in the valve body; Valve head sealing surface and valve body sealing surface are fitted each other, valve rod fixed base and valve body are fixed get final product, need not as adopting spring is that the mensuration that the outlet valve of elastic element carries out exhaust clearance is earlier assembled again; The exhaust clearance that can guarantee a plurality of outlet valves is consistent, makes that the exhaust velocity of each outlet valve is synchronous in exhaust process.
More than show and described basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (6)
1. improved pore-free tire mold outlet valve is installed on the tire forming mold exhaust port, it is characterized in that: comprise valve body; Be set with spool in the said valve body; Said spool comprises valve head, and said valve head is located at the end of said spool near said tire forming mold inner chamber, and said valve head rear end is fixed with valve rod; The rear end of said valve rod is fixed with the valve rod fixed base; Be respectively equipped with valve head sealing surface and the valve body sealing surface that cooperatively interacts on said valve head and the said valve body, be provided with exhaust cavity between said valve rod and the said valve body, said valve rod fixed base is fixedly connected with valve body; Said valve body and/or said valve rod fixed base are provided with and are communicated with said exhaust cavity and extraneous exhaust passage; The thermal expansion coefficient of said valve rod is greater than the thermal expansion coefficient of said valve body, and said at normal temperatures valve head sealing surface and said valve body sealing surface are fitted, and are forming exhaust clearance between said valve head sealing surface and the said valve body sealing surface under the tire building temperature.
2. improved pore-free tire mold outlet valve as claimed in claim 1, it is characterized in that: said exhaust clearance is 0.02mm-0.03mm.
3. improved pore-free tire mold outlet valve as claimed in claim 1, it is characterized in that: said valve head sealing surface and said valve body sealing surface are the conical surface that cooperatively interacts.
4. improved pore-free tire mold outlet valve as claimed in claim 1 is characterized in that: said valve head, said valve rod and said valve rod fixed base are integral structure.
5. improved pore-free tire mold outlet valve as claimed in claim 1, it is characterized in that: said valve body is a stainless steel body, said spool is the aluminum alloy spool.
6. like claim 1,2,3,4 or 5 described improved pore-free tire mold outlet valves; It is characterized in that: said exhaust passage comprises the relief opening that is arranged on said body wall, is provided with between said valve body outer side wall and the said exhaust port to be communicated with said relief opening and extraneous space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102424118A CN102313057B (en) | 2011-08-23 | 2011-08-23 | Improved pore-free tire mould exhaust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102424118A CN102313057B (en) | 2011-08-23 | 2011-08-23 | Improved pore-free tire mould exhaust valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102313057A CN102313057A (en) | 2012-01-11 |
| CN102313057B true CN102313057B (en) | 2012-11-21 |
Family
ID=45426492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102424118A Withdrawn - After Issue CN102313057B (en) | 2011-08-23 | 2011-08-23 | Improved pore-free tire mould exhaust valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102313057B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109159330B (en) * | 2018-09-05 | 2021-01-12 | 青岛科技大学 | Tire mold exhaust sleeve with adjustable gap |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9708584D0 (en) * | 1997-04-29 | 1997-06-18 | Sp Tyres Uk Ltd | Mould vents |
| US6871831B1 (en) * | 2003-12-19 | 2005-03-29 | The Goodyear Tire & Rubber Company | Mold vent |
| KR100666073B1 (en) * | 2005-12-02 | 2007-01-09 | 한국타이어 주식회사 | Vent device of vulcanization mold |
| WO2007086095A1 (en) * | 2006-01-24 | 2007-08-02 | The Yokohama Rubber Co., Ltd. | Metal mold for tire formation, plug for use in vent hole of metal mold for tire formation, and tire manufactured with use of metal mold for tire formation |
| KR101006894B1 (en) * | 2008-09-17 | 2011-01-12 | 한국타이어 주식회사 | Vent apparatus for tire vulcanizing mold |
| CN202203469U (en) * | 2011-08-23 | 2012-04-25 | 山东豪迈机械科技股份有限公司 | Improved exhaust valve for tire mold without exhaust vent |
-
2011
- 2011-08-23 CN CN2011102424118A patent/CN102313057B/en not_active Withdrawn - After Issue
Also Published As
| Publication number | Publication date |
|---|---|
| CN102313057A (en) | 2012-01-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20221130 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20221130 |