CN103158220A - Rear gas-filling device and cooling method of vulcanized rear tire - Google Patents
Rear gas-filling device and cooling method of vulcanized rear tire Download PDFInfo
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- CN103158220A CN103158220A CN2012104646521A CN201210464652A CN103158220A CN 103158220 A CN103158220 A CN 103158220A CN 2012104646521 A CN2012104646521 A CN 2012104646521A CN 201210464652 A CN201210464652 A CN 201210464652A CN 103158220 A CN103158220 A CN 103158220A
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- tire
- cooling
- sprayer
- inflation apparatus
- wheel rim
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- 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
- B29D30/0633—After-treatment specially adapted for vulcanising tyres
- B29D30/0643—Cooling during post cure inflation; Post cure inflators used therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a rear gas-filling device and a cooling method of a vulcanized rear tire. In a vulcanization process of a tire whose cooling time is limited, the cooling of a cord fabric layer is fully conducted in a short time, and thereby deterioration of RFV and RRO, caused by thermal contraction of the cord fabric layer can be prevented, and tire cooling can be effectively conducted without a large amount of cooling water. The rear gas-filling device is provided with a sprayer which sprays cooling medium into the tire and a gas outlet, from which gas in the tire is discharged. In the cooling method, cooling medium is sprayed from the sprayer to the internal tire, and the internal side of the tire is cooled down, and air in the tire passes through the gas outlet and is discharged. Accordingly, the internal pressure increase due to the evaporation of the cooling medium can be prevented, and the internal pressure of the tire can be kept constant.
Description
Technical field
The present invention relates to rear inflation apparatus (PCI:post cureinflator) that the manufacturing of tire uses and the cooling means of sulfuration rear tyre.
Background technology
In the vulcanization process of tire, utilize sulfurizing mould that green tire is vulcanized, then utilize the tire of the high temperature after rear inflation apparatus has just finished the sulfuration of taking out from sulfurizing mould to carry out cooling, prevent thus the distortion of tire.
And, rear inflation apparatus be tire is installed on a pair of wheel rim and the air of ormal weight is filled in tire and make carry out under the state of tire inflation cooling.
Yet, because in the past rear inflation apparatus is that by the air of normal temperature being sent in tire, tire to be carried out nature cooling, therefore in the vulcanization process that is restricted cool time, sometimes can't fully carry out the cooling of tire.
Therefore, propose to have by spray air, spray water from the outside of tire the rear inflation apparatus of cooling tire (for example patent documentation 1) efficiently.
Patent documentation 1: TOHKEMY 2007-320151 communique
Yet, even if also there are the following problems for such rear inflation apparatus: sometimes can't be at short notice abundant cooling casing ply as the most important part of tire, and need a large amount of cooling waters.
Summary of the invention
Therefore, problem of the present invention is to provide a kind of rear inflation apparatus, carry out fully at short notice the cooling of casing ply in the vulcanization process of the tire that is restricted in cool time, can prevent thus the thermal contraction of casing ply, and then need not just cooling tire efficiently of a large amount of cooling waters.
The invention of technical scheme 1 record is a kind of rear inflation apparatus, possesses with the bead part of tire chimericly and support a pair of wheel rim in up and down of described tire, pressurizes under the state after pressing in to described filling tires cooling, and described rear inflation apparatus is characterised in that,
Be provided with at described wheel rim: spray the sprayer of cooling medium and the exhaust outlet that the air in described tire is carried out exhaust in tire.
The invention of technical scheme 2 record is the cooling means that the tire of the high temperature after utilizing rear inflation apparatus that technical scheme 1 is put down in writing that cooling sulfuration has just been finished carries out cooling sulfuration rear tyre, and the cooling means of described sulfuration rear tyre is characterised in that,
Described tire is carried out from the inboard by spraying cooling medium in from described sprayer to described tire cooling,
Make the air in described tire carry out exhaust by described exhaust outlet, the interior pressure that suppresses thus the described tire that the evaporation because of the described cooling medium that sprays causes increases, thereby remains the interior pressure of described tire constant.
According to the present invention, fully carry out at short notice the cooling of casing ply in the vulcanization process of the tire that is restricted in cool time, can prevent thus RFV that the thermal contraction because of casing ply causes and the deterioration of RRO, and then need not just cooling tire efficiently of a large amount of cooling waters.
Description of drawings
Fig. 1 is the figure of structure of major part of the rear inflation apparatus of schematically illustrated an embodiment of the invention.
Fig. 2 illustrates the temperature of each several part of the tire housing in the vulcanization process of embodiment and the figure of the relation between cure time.
Fig. 3 illustrates the temperature of each several part of the tire housing in the vulcanization process of comparative example and the figure of the relation between cure time.
Description of reference numerals: 1 ... rear inflation apparatus; 11 ... fulcrum; 12 ... the wheel rim of patrix; 13 ... the wheel rim of counterdie; 14 ... sprayer; 14a ... spray holes; 15 ... exhaust outlet; T ... tire.
The specific embodiment
Below based on embodiment and utilize accompanying drawing the present invention will be described.
1. rear inflation apparatus
Fig. 1 is the figure of structure of major part of the PCI of schematically illustrated an embodiment of the invention.As shown in Figure 1, rear inflation apparatus 1 sprayer 14 and the exhaust outlet 15 that possess the wheel rim 13 of wheel rim 12, the counterdie of fulcrum 11, patrix, arrange at the wheel rim 12 of patrix.In addition, in Fig. 1, T represents to vulcanize the tire after firm end, and is the tire that is installed on rear inflation apparatus.
The wheel rim 12 of patrix is the interval that can adjust both sides with the wheel rim 13 of counterdie by fulcrum 11 supportings.Be provided with the sprayer 14 that sprays cooling water and in order to remain constant interior pressure in tire and exhaust outlet 15 exhaust at the wheel rim 12 of patrix.
In addition, preferably, for the inner surface that spreads all over tire T sprays cooling water equably, respectively at the wheel rim 13 of the wheel rim 12 of patrix and counterdie along circumferentially equally spaced the spray holes 14a of sprayer 14 being disposed at plurality of positions.And preferably, the sprinkling direction of spray holes 14a is towards the direction of tire T.
2. vulcanize the cooling means of rear tyre
Next, the method for the cooling sulfuration rear tyre of rear inflation apparatus 1 that uses present embodiment described.
(1) at first, the tire with the high temperature after just end of sulfuration is installed on rear inflation apparatus 1.Namely, after the wheel rim 13 of the tyre bead of the both sides of the tire T of the high temperature after making just end of sulfuration and the wheel rim 12 of patrix and counterdie is chimeric, according to the size of tire T, the wheel rim 12 of patrix and the interval of the wheel rim 13 of counterdie are adjusted to the size of regulation, thus tire T are fixed.
(2) next, for tire T being expanded and keeping stable shape and inject air so that the interior pressure of tire T reaches the size of regulation, particularly, if the SP(car) size reaches the 2.0kPa left and right, if ST(SUV) size reaches the 3.0kPa left and right.
(3) next, from sprayer 14 spray water.The water that sprays evaporation when absorbing heat from tire T, tire so the time evaporation heat and begin from the inboard promptly cooling, also promptly cooling near the casing ply of tire inboard.
In addition, total sprinkling amount of water decides according to the heat of tire.For example, the temperature of the tire after finishing because sulfuration is firm usually is 185 ℃ of left and right, therefore the temperature of tire is reduced to from 185 ℃ heat that normal temperature (30 ℃) loses and sets for the heat of the evaporation of water heat of spraying and equate, particularly, calculate total sprinkling amount by following formula.
Tire heat=tire quality * specific heat (1.1) * variations in temperature (185 ℃-30 ℃)
Total sprinkling amount (g)=tire heat ÷ evaporation of water heat (540cal/g)
Preferably, more than the spray pressure of sprayer 14 can being adjusted into 2.0kPa, the sprinkling amount is adjusted into the scope that is in 0ml/min～300ml/min.
Although the water of sprinkling is in the evaporation of the inboard of tire T and make volume increase, owing to being from exhaust outlet 15 exhausts, therefore interior pressure remains constant.
And, preferably, the pressure adjusting range of exhaust outlet 15 is set as 0kPa～5kPa.In addition, according to the size of tire, the sprinkling amount of water etc. and the operating pressure of exhaust outlet is adjusted into suitable value.
3. the effect of present embodiment
(1) according to present embodiment, be provided with the sprayer of spray water (cooling medium) in the tire, by spraying cooling medium in from sprayer to tire from the inboard cooling tire, therefore with carry out cooling method from the outside of tire in the past like that and compare, cooling settings is near the casing ply the tire inboard efficiently, and utilizes the evaporation of water heat to absorb heat from tire efficiently.
Therefore, can fully carry out at short notice the cooling of casing ply in the PCI operation after the sulfuration of the tire that is restricted in cool time, and the thermal contraction that can suppress to vulcanize the later casing ply of rear inflation, thereby can prevent that RFV and RRO from worsening.Due to can also be cooling efficiently, therefore need not a large amount of cooling waters.And, be converted into the evaporation heat of spray water by the heat with tire, can prevent hydropexis in the inboard of tire, thereby can carry out equably cooling.
(2) and, be provided with the exhaust outlet that the air in tire is carried out exhaust, make air in tire from exhaust outlet by carrying out exhaust, thereby the interior pressure that the interior pressure that can suppress thus the tire that causes because of the evaporation of water after spraying increases described tire keeps constant, therefore in gas replenishment process, tire can be remained suitable swelling state after sulfuration.
(3) owing to having above-mentioned feature, therefore can improve tyre evenness.
(4) and then, according to present embodiment, owing to shortening the PCI time by efficiently cooling, therefore can boost productivity, thereby can reduce the vulcanizer cost based on PCI of (cure) in sulfidation, and can realize saving spatialization.
Embodiment
Next carry out more specific description based on embodiment.
(1) embodiment, comparative example
Embodiment uses the example that sprays to carry out the rear inflation apparatus of cooling above-mentioned present embodiment by water.Comparative example is the example that uses based on naturally cooling rear inflation apparatus.
(2) experimental condition
Experimental condition is as follows.In addition, owing to not carrying out the sprinkling of water, so the experimental condition of comparative example is (a)～(h).
(a) tire size: 185/65R15
(b) curing temperature: skin ... 188 ℃
Heating plate ... 183 ℃
(c) PCI wheel rim interval: 160mm
(d) the PCI time: 15 minutes two curing cycles
(e) press in PCI: 2.0kPa
(f) test number: n=8
(g) tire weight: 7.5kg
(h) tire heat: 129kcal
(i) total sprinkling amount: 1279/0.54=2370ml
(j) spraying time: 2370(ml)/300(ml/min)=7.9min
(being made as 8min in test)
In addition, calculate total sprinkling amount of embodiment by described formula, take spray rate as 300ml(g)/min set spraying time.
(3) result of the test
Fig. 2 illustrates the temperature of each several part of the tire housing in the vulcanization process of embodiment and the figure of the relation between cure time.Fig. 3 illustrates the temperature of each several part of the tire housing in the vulcanization process of comparative example and the figure of the relation between cure time.In Fig. 2 and Fig. 3, the longitudinal axis represents temperature, and transverse axis represents cure time, and the thick line longitudinally of central authorities represents PCI operation zero hour.
Can confirm according to Fig. 2: in the situation that embodiment transfers to the later temperature of PCI operation and descends rapidly, after the PCI operation began through 10 minutes, the temperature of each several part can not cause the thermal contraction of casing ply all lower than 100 ℃.
On the other hand, can confirm according to Fig. 3: in the situation that comparative example, even more than the PCI operation begins to divide through 10 clocks, the temperature of tire housing of tyre sidewall position etc. also is in more than 100 ℃, thereby has produced thermal contraction.
In order to suppress the thermal contraction of casing ply, must promptly be cooled to not cause below 100 ℃ of thermal contraction after sulfuration from transferring to the PCI operation, can confirm according to above-mentioned result of the test: embodiment can satisfy this condition, and comparative example can't satisfy this condition.
(4) performance evaluation of tire
(a) evaluation method
Tire for embodiment and comparative example utilizes tire FV machine to measure RFV and RRO, and obtains respectively its mean value (Ave) and standard deviation (σ).
(b) evaluation result
The evaluation result of embodiment and comparative example has been shown in table 1.
Table 1
According to table 1 as can be known, embodiment compares with comparative example, and RFV, RRO both sides' Ave, σ all reduce, thereby have improved uniformity.
Although abovely describe the present invention based on embodiment, the present invention is not limited to above-mentioned embodiment.In or the scope that be equal to identical with the present invention, can apply various changes to above-mentioned embodiment.
Claims (2)
1. rear inflation apparatus possesses with the bead part of tire chimericly and support a pair of wheel rim in up and down of described tire, pressurizes under the state after pressing in to described filling tires cooling, and described rear inflation apparatus is characterised in that,
Be provided with at described wheel rim: spray the sprayer of cooling medium and the exhaust outlet that the air in described tire is carried out exhaust in tire.
2. cooling means of vulcanizing rear tyre is to utilize rear inflation apparatus claimed in claim 1 to carry out cooling method to the tire that vulcanizes the high temperature after firm end, and the cooling means of described sulfuration rear tyre is characterised in that,
Described tire is carried out from the inboard by spraying cooling medium in from described sprayer to described tire cooling,
Make the air in described tire carry out exhaust by described exhaust outlet, the interior pressure that suppresses thus the described tire that the evaporation because of the described cooling medium that sprays causes increases, thereby remains the interior pressure of described tire constant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011276572A JP5406267B2 (en) | 2011-12-19 | 2011-12-19 | Post-cure inflator and vulcanized tire cooling method |
| JP2011-276572 | 2011-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103158220A true CN103158220A (en) | 2013-06-19 |
Family
ID=48582017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104646521A Pending CN103158220A (en) | 2011-12-19 | 2012-11-16 | Rear gas-filling device and cooling method of vulcanized rear tire |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5406267B2 (en) |
| CN (1) | CN103158220A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626176A (en) * | 2017-03-16 | 2017-05-10 | 青岛双星橡塑机械有限公司 | Double-mold vulcanizer for tire forming |
| CN112895247A (en) * | 2021-01-23 | 2021-06-04 | 大千科技(天津)有限公司 | Cooling device applied to plastic production line |
| CN113547675A (en) * | 2021-07-27 | 2021-10-26 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Method for preventing crease from appearing on shoulder in tire when large-size radial aircraft tire is vulcanized and taken out of boiler |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6386828B2 (en) * | 2014-08-04 | 2018-09-05 | 東洋ゴム工業株式会社 | Method for manufacturing run-flat tires |
| JP6906748B2 (en) * | 2017-01-23 | 2021-07-21 | 住友ゴム工業株式会社 | Inflator equipment and gas leak detection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3852008A (en) * | 1973-07-26 | 1974-12-03 | Uniroyal Inc | Apparatus for cooling tires during post-inflation |
| JPH01310914A (en) * | 1988-06-09 | 1989-12-15 | Bridgestone Corp | Postcure inflator |
| EP1215024A2 (en) * | 2000-12-12 | 2002-06-19 | Bridgestone Corporation | Method and apparatus for the manufacture of pneumatic tires |
| CN102555125A (en) * | 2010-11-19 | 2012-07-11 | 固特异轮胎和橡胶公司 | Apparatus and method for shock cooling of a cured pneumatic tire |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001009848A (en) * | 1999-04-28 | 2001-01-16 | Fuji Seiko Kk | Postcure inflator and method for cooling tire after vulcanization |
| JP3404359B2 (en) * | 2000-05-11 | 2003-05-06 | 不二精工株式会社 | Post cure inflator and method of cooling tire after vulcanization |
| JP2008188825A (en) * | 2007-02-02 | 2008-08-21 | Ichimaru Giken:Kk | Vulcanized-tire cooling device |
| JP2009018445A (en) * | 2007-07-10 | 2009-01-29 | Yokohama Rubber Co Ltd:The | Method of manufacturing pneumatic tire |
-
2011
- 2011-12-19 JP JP2011276572A patent/JP5406267B2/en not_active Expired - Fee Related
-
2012
- 2012-11-16 CN CN2012104646521A patent/CN103158220A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3852008A (en) * | 1973-07-26 | 1974-12-03 | Uniroyal Inc | Apparatus for cooling tires during post-inflation |
| JPH01310914A (en) * | 1988-06-09 | 1989-12-15 | Bridgestone Corp | Postcure inflator |
| EP1215024A2 (en) * | 2000-12-12 | 2002-06-19 | Bridgestone Corporation | Method and apparatus for the manufacture of pneumatic tires |
| CN102555125A (en) * | 2010-11-19 | 2012-07-11 | 固特异轮胎和橡胶公司 | Apparatus and method for shock cooling of a cured pneumatic tire |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626176A (en) * | 2017-03-16 | 2017-05-10 | 青岛双星橡塑机械有限公司 | Double-mold vulcanizer for tire forming |
| CN112895247A (en) * | 2021-01-23 | 2021-06-04 | 大千科技(天津)有限公司 | Cooling device applied to plastic production line |
| CN112895247B (en) * | 2021-01-23 | 2022-04-05 | 大千科技(天津)有限公司 | Cooling device applied to plastic production line |
| CN113547675A (en) * | 2021-07-27 | 2021-10-26 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Method for preventing crease from appearing on shoulder in tire when large-size radial aircraft tire is vulcanized and taken out of boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013126726A (en) | 2013-06-27 |
| JP5406267B2 (en) | 2014-02-05 |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130619 |