CN104385506A - Pressure retention and temperature varying nitrogen vulcanization method for tire - Google Patents

Pressure retention and temperature varying nitrogen vulcanization method for tire Download PDF

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Publication number
CN104385506A
CN104385506A CN201410678344.8A CN201410678344A CN104385506A CN 104385506 A CN104385506 A CN 104385506A CN 201410678344 A CN201410678344 A CN 201410678344A CN 104385506 A CN104385506 A CN 104385506A
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CN
China
Prior art keywords
temperature
time
deg
medium
tire
Prior art date
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CN201410678344.8A
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Chinese (zh)
Inventor
黄蕊芬
李海鹏
李华美
王宝江
常跃峰
丁超
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三角轮胎股份有限公司
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Priority to CN201410678344.8A priority Critical patent/CN104385506A/en
Publication of CN104385506A publication Critical patent/CN104385506A/en

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Abstract

The invention relates to a pressure retention and temperature varying nitrogen vulcanization method for a tire, and belongs to the field of tire production. The pressure retention and temperature varying nitrogen vulcanization method comprises the technical steps of feeding a high-temperature steam medium into a tire capsule, quickly heating the interior of the capsule for about 8-10 minutes, then feeding a high-pressure nitrogen medium, performing pressure retention after the pressure in the capsule reaches a standard value range, and performing pressure release, vacuumizing and die opening after the pressure retention is ended. According to the pressure retention and temperature varying nitrogen vulcanization method for the tire, in a tire vulcanization process, under a condition of insufficient high-temperature steam medium, the total sub-temperature time is automatically calculated by a programmable logic controller (PLC) program, delaying vulcanization is automatically executed within an appointed time period, and the delay time is automatically controlled. In the tire vulcanization process, under the condition of insufficient high-temperature steam medium, the total sub-temperature time is automatically calculated, delaying vulcanization is automatically executed within the appointed time period, and the delay time is automatically controlled, so that the qualification rate of the tire is increased.

Description

Tyre pressure-keeping alternating temperature nitrogen vulcanization process

 

Technical field

The present invention relates to tire manufacturing art, is the method for a kind of tyre pressure-keeping alternating temperature nitrogen sulfuration process automatic time delay sulfuration in detail, and alternative artificial calculating adds up to owe the error of temperature time and incorrect time delay.

 

Background technology

As everyone knows, tyre vulcanizing is last procedure in Tire production, is critical process, in sulfuration process, the tire base combined by preceding processes, is sulfided into the product with definite shape and physical and mechanical properties by mould and high temperature, high-pressure medium, has possessed the value used.Tyre pressure-keeping alternating temperature nitrogen sulfuration process step is that tyre capsule first passes into high-temperature steam medium, high-temperature steam temperature is 203 ~ 210 DEG C, be rapidly heated in capsule about 8 ~ 10 minutes, change subsequently and pass into high pressure nitrogen medium, high pressure nitrogen pressure is 2.5 ~ 2.9Mpa, rise to after standard value range until glue intraluminal pressure and carry out pressurize, carry out row pressure after pressurize terminates, inhale vacuum, Qi Mo.But in sulfidation, concentrate dress pot phenomenon that high temperature steam pressure can be caused to reduce if there is the same time, or catch up with from steam power plant not enough for the high-temperature steam surge pressure come, the vapor (steam) temperature of the low correspondence of steam pressure will be low, the low meeting of vapor (steam) temperature causes tyre vulcanization not enough, namely owe sulphur, form time waste product.Therefore in tire vulcanization process when high-temperature steam medium is not enough, artificial calculating is needed to add up to owe the temperature time, owing the temperature time refers to and terminates during this period of time to high temperature steam medium after 1 minute passing into high-temperature steam medium, by minute in units of, when vapor (steam) temperature lower than 203 DEG C higher than when equaling 200 DEG C, the artificial accumulative time of owing temperature, terminate advance pedestrian work time delay sulfuration at pressurize alternating temperature, accumulatively how long owe temperature with regard to time delay sulfuration how long; When vapor (steam) temperature lower than 200 DEG C higher than when equaling 190 DEG C, artificial calculate the accumulative time of owing temperature, manually carry out time delay sulfuration before terminating passing into high pressure nitrogen medium, pressurize alternating temperature, the accumulative of time delay 2 times owes the temperature time; When to occur simultaneously vapor (steam) temperature lower than 203 DEG C higher than when equaling 200 DEG C and lower than 200 DEG C higher than when equaling 190 DEG C, artificial calculating accumulatively owes temperature time and time delay cure time respectively according to the method described above, terminates last same manual operation time delay at pressurize alternating temperature.Time delay sulfuration makes in tire vulcanization process when high-temperature steam medium is not enough, and tyre vulcanization still reaches standard-required.Easily there is error in the artificial calculating accumulative deficient temperature time, and also has maloperation when delay operation and leak operation (forgetting time delay) phenomenon.

 

Summary of the invention

In order to overcome the deficiencies in the prior art, the invention provides a kind of tyre pressure-keeping alternating temperature nitrogen vulcanization process, in tire vulcanization process when high-temperature steam medium is not enough, automatic calculating is accumulative owes the temperature time, automatically at the appointed time section time delay sulfuration, the automatic control delay time, improve the qualification rate of tire.

The technical solution adopted for the present invention to solve the technical problems is: a kind of tyre pressure-keeping alternating temperature nitrogen vulcanization process, it is characterized in that, tyre capsule passes into high-temperature steam medium, be rapidly heated in capsule about 8 ~ 10 minutes, change subsequently and pass into high pressure nitrogen medium, rise to after standard value range until glue intraluminal pressure and carry out pressurize, row pressure is carried out after pressurize terminates, inhale vacuum, Qi Mo, when high-temperature steam medium is not enough, to high temperature steam medium terminate during this period of time after 1 minute by Programmable Logic Controller passing into high-temperature steam medium, in seconds, when vapor (steam) temperature lower than 203 DEG C higher than when equaling 200 DEG C, automatically the accumulative time of owing temperature, passing into high pressure nitrogen medium, pressurize alternating temperature terminates front automatic time delay sulfuration, accumulative how long owe temperature with regard to time delay sulfuration how long, when vapor (steam) temperature lower than 200 DEG C higher than when equaling 190 DEG C, the automatically accumulative time of owing temperature, automatically carry out time delay sulfuration before terminating passing into high pressure nitrogen medium, pressurize alternating temperature, the accumulative of time delay 2 times owes the temperature time, when to occur simultaneously vapor (steam) temperature lower than 203 DEG C higher than when equaling 200 DEG C and lower than 200 DEG C higher than when equaling 190 DEG C, calculate respectively automatically according to the method described above and accumulatively owe temperature time and time delay cure time, passing into high pressure nitrogen medium, pressurize alternating temperature terminates last same time delay.

The invention has the beneficial effects as follows, in tire vulcanization process when high-temperature steam medium is not enough, automatically calculate accumulative deficient temperature time, automatically at the appointed time section time delay sulfuration, the automatic control delay time, improve the qualification rate of tire.

 

Accompanying drawing explanation

Accompanying drawing 1 is normal curing curve.

Accompanying drawing 2 is the low curing curve of steam pressure.

Accompanying drawing 3 is the low curing curve of steam pressure.

Below in conjunction with embodiment, the present invention is further described.

 

Detailed description of the invention:

Tyre pressure-keeping alternating temperature nitrogen sulfuration process step of the present invention is that tyre capsule passes into high-temperature steam medium, be rapidly heated in capsule about 8 ~ 10 minutes, change subsequently and pass into high pressure nitrogen medium, rise to after standard value range until glue intraluminal pressure and carry out pressurize, carry out row pressure after pressurize terminates, inhale vacuum, Qi Mo.Write automatic time delay sulfuration program by Programmable Logic Controller (PLC), automatically calculate accumulative deficient temperature time, automatically at the appointed time section time delay sulfuration, the automatic control delay time.Be exactly pass into high-temperature steam medium and terminate during this period of time to high temperature steam medium by being programmed in after 1 minute specifically, in seconds, when vapor (steam) temperature lower than 203 DEG C higher than when equaling 200 DEG C, automatically the accumulative time of owing temperature, passing into high pressure nitrogen medium, pressurize alternating temperature terminate before automatic time delay sulfuration, accumulatively how long owe temperature with regard to time delay sulfuration how long; When vapor (steam) temperature lower than 200 DEG C higher than when equaling 190 DEG C, the automatically accumulative time of owing temperature, automatically carry out time delay sulfuration before terminating passing into high pressure nitrogen medium, pressurize alternating temperature, the accumulative of time delay 2 times owes the temperature time; When to occur simultaneously vapor (steam) temperature lower than 203 DEG C higher than when equaling 200 DEG C and lower than 200 DEG C higher than when equaling 190 DEG C, calculate respectively automatically according to the method described above and accumulatively owe temperature time and time delay cure time, passing into high pressure nitrogen medium, pressurize alternating temperature terminates last same time delay.Substitute the error of artificial calculating accumulative deficient temperature time and incorrect time delay, improve the qualification rate of tire.

Accompanying drawing 1 is normal curing curve, and A1 is for normally to pass into high-temperature steam medium about 8 ~ 10 minutes, and B1 is for normally to pass into high pressure nitrogen medium, pressurize alternating temperature time.

Accompanying drawing 2 is steam pressure low (corresponding vapor (steam) temperature will be low) curing curve, when A2 is for starting logical steam, pressure is just on the low side, in seconds, when vapor (steam) temperature lower than 203 DEG C higher than when equaling 200 DEG C, automatically the accumulative time S1 owing temperature, when vapor (steam) temperature lower than 200 DEG C higher than when equaling 190 DEG C, the automatically accumulative time S2 owing temperature; B1 is for normally to pass into high pressure nitrogen medium, pressurize alternating temperature time, and C1 is time delay cure time, and delay time is S1+2*S2.

Accompanying drawing 3 is steam pressure low (corresponding vapor (steam) temperature will be low) curing curve, when A3 is for starting logical steam, pressure is normal, occurred on the low side afterwards, in seconds, when vapor (steam) temperature lower than 203 DEG C higher than when equaling 200 DEG C, automatically the accumulative time S3 owing temperature, when vapor (steam) temperature lower than 200 DEG C higher than when equaling 190 DEG C, the accumulative time S4 owing temperature automatically; B1 is for normally to pass into high pressure nitrogen medium, pressurize alternating temperature time, and C2 is time delay cure time, and delay time is S3+2*S4.

Claims (1)

1. a tyre pressure-keeping alternating temperature nitrogen vulcanization process, it is characterized in that, tyre capsule passes into high-temperature steam medium, be rapidly heated in capsule about 8 ~ 10 minutes, change subsequently and pass into high pressure nitrogen medium, rise to after standard value range until glue intraluminal pressure and carry out pressurize, row pressure is carried out after pressurize terminates, inhale vacuum, Qi Mo, when high-temperature steam medium is not enough, to high temperature steam medium terminate during this period of time after 1 minute by Programmable Logic Controller passing into high-temperature steam medium, in seconds, when vapor (steam) temperature lower than 203 DEG C higher than when equaling 200 DEG C, automatically the accumulative time of owing temperature, passing into high pressure nitrogen medium, pressurize alternating temperature terminates front automatic time delay sulfuration, accumulative how long owe temperature with regard to time delay sulfuration how long, when vapor (steam) temperature lower than 200 DEG C higher than when equaling 190 DEG C, the automatically accumulative time of owing temperature, automatically carry out time delay sulfuration before terminating passing into high pressure nitrogen medium, pressurize alternating temperature, the accumulative of time delay 2 times owes the temperature time, when to occur simultaneously vapor (steam) temperature lower than 203 DEG C higher than when equaling 200 DEG C and lower than 200 DEG C higher than when equaling 190 DEG C, calculate respectively automatically according to the method described above and accumulatively owe temperature time and time delay cure time, passing into high pressure nitrogen medium, pressurize alternating temperature terminates last same time delay.
CN201410678344.8A 2014-11-24 2014-11-24 Pressure retention and temperature varying nitrogen vulcanization method for tire CN104385506A (en)

Priority Applications (1)

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CN201410678344.8A CN104385506A (en) 2014-11-24 2014-11-24 Pressure retention and temperature varying nitrogen vulcanization method for tire

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CN201410678344.8A CN104385506A (en) 2014-11-24 2014-11-24 Pressure retention and temperature varying nitrogen vulcanization method for tire

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1290595A (en) * 2000-07-07 2001-04-11 青岛国人橡胶研究院 Method and equpment for heating nitrogenation and vulcanization of tyre
CN102363339A (en) * 2011-11-08 2012-02-29 双钱集团(如皋)轮胎有限公司 Tyre rubber vulcanizing technology
CN102481739A (en) * 2009-09-03 2012-05-30 大陆轮胎德国有限公司 Method for vulcanizing vehicle tires using a heating press
CN102626969A (en) * 2012-05-02 2012-08-08 三角轮胎股份有限公司 Method for rubber vulcanization of semisteel tire
CN102773952A (en) * 2012-08-06 2012-11-14 李勇 Automatically shaped vulcanizing device for charging nitrogen gas by motorcycle tire capsule

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1290595A (en) * 2000-07-07 2001-04-11 青岛国人橡胶研究院 Method and equpment for heating nitrogenation and vulcanization of tyre
CN102481739A (en) * 2009-09-03 2012-05-30 大陆轮胎德国有限公司 Method for vulcanizing vehicle tires using a heating press
CN102363339A (en) * 2011-11-08 2012-02-29 双钱集团(如皋)轮胎有限公司 Tyre rubber vulcanizing technology
CN102626969A (en) * 2012-05-02 2012-08-08 三角轮胎股份有限公司 Method for rubber vulcanization of semisteel tire
CN102773952A (en) * 2012-08-06 2012-11-14 李勇 Automatically shaped vulcanizing device for charging nitrogen gas by motorcycle tire capsule

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
中国机械工程学会等: "《中国模具设计大典 第2卷》", 31 January 2003, 江西科学技术出版社 *
罗永丰等: "全钢载重子午线轮胎硫化机自动化改造", 《轮胎工业》 *

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Application publication date: 20150304