CN102133783A - Process for vulcanizing rubber transmission belt by overheating hydraulic pressure method - Google Patents
Process for vulcanizing rubber transmission belt by overheating hydraulic pressure method Download PDFInfo
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- CN102133783A CN102133783A CN2010101059184A CN201010105918A CN102133783A CN 102133783 A CN102133783 A CN 102133783A CN 2010101059184 A CN2010101059184 A CN 2010101059184A CN 201010105918 A CN201010105918 A CN 201010105918A CN 102133783 A CN102133783 A CN 102133783A
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Abstract
The invention relates to the field of the production of rubber transmission belts, and relates to a process for vulcanizing a rubber transmission belt by an overheating hydraulic pressure method. The process comprises the following steps of: designing a metal die with an inner cavity, wrapping rubber outside the die, sleeving a rubber sleeve outside the rubber, putting the die wrapped with the rubber into a hermetically-sealed vulcanizing tank, so that two hermetically-sealed cavities are formed inside and outside the die, wherein steam and a coil pipe are formed in an outer cavity of the die; injecting hot water into the outer cavity of the die, pressurizing to the pressure of between 1.0 and 2.0 MPa by using a pressurizing pump, conveying high-pressure steam (the pressure is between 0.3 and 0.7 MPa) into an inner cavity of the die, and maintaining constant pressure; and closing a coil pipe air inlet system automatically till the specific time to finish vulcanizing. Due to the adoption of the technical scheme, the temperature under the specific pressure is controlled accurately, so that three elements of rubber vulcanizing are matched organically, the phenomena of over cure and under cure of the rubber are overcome effectively, and the rubber can flow to all parts of the die fully in the process of softening due to heating and has the excellent anti-aging performance and long service life.
Description
Technical field
The present invention relates to the production field of rubber transmission belting, is a kind of superheated water platen press rubber transmission belt vulcanizing technology.
Background technology
Cold hardening, embrittlement are met in the rubber deliquescing of being heated, easy-formation, and wearing and tearing are soluble in organic solvents such as gasoline easily, have two keys in the molecule, easily play addition reaction, wear out easily.For improving the performance of rubber, to carry out a series of process to raw rubber on producing, under certain condition, make rubber and vulcanizing agent generation chemical reaction in the sizing material, make its macromolecules cross-linking become the cancellated big molecule of 3 D stereo, thereby make sizing material possess high strength, high resiliency, high abrasion, anticorrosive or the like premium properties by linear structure.This process is called the vulcanization of rubber.The reaction speed of vulcanizing between rubber molecule is different because of the difference of its molecular structure.But the sulfuration of rubber has three common key elements, i.e. curing temperature, sulfide stress and cure time.
The defective of the existence of tradition transmission belt vulcanizing technology is: the sulfuration process of driving-belt almost without exception be to adopt the steam vulcanization (cure) method.Promptly adopt the steam of 0.8MPa-1.0MPa workpiece to be vulcanized as curing medium.As everyone knows, according to thermal technology principle, the temperature of steam is directly proportional with pressure, will expect that under the certain prerequisite of curing temperature bigger pressure is impossible.The workpiece that this technology is vulcanized out is not that over cure is exactly that the rubber density is not enough, intensity is low, and stress at definite elongation is poor.Improve sulfide stress, curing temperature also will inevitably increase, cause cure time significantly to shorten, the bad thermal conduction characteristic of rubber in addition, everything is for this thicker workpiece of driving-belt, inside and outside state of cure (vulcanization) will be inconsistent, causes the whole workpiece quality not high, so the steam vulcanization (cure) method is difficult to obtain the optimum performance of rubber.
Summary of the invention
The objective of the invention is to provide a kind of new technology, this technology has effectively solved the relation of interdependence of temperature and pressure, will vulcanize three elements and combine.Its inventive point is to utilize superheated water as curing medium first, and the rubber workpiece is vulcanized.
The present invention is achieved in that a kind of metal die that inner chamber is arranged of design, the rubber bag is carried out in the mould outside, and put gum cover in rubber exterior, and both mold ends is sealed; To wrap the mould of having carried out rubber again and be placed in the airtight sulfuration filling, two airtight cavitys of the inside and outside formation of mould have steam to add coil pipe in the mould outer chamber; Inject hot water in the external cavity of mould, and be forced into 1.0-2.0MPa with booster pump, (0.3-0.7MPa) sends into dies cavity with high steam, keeps constant compression force; In the coil pipe of mould outer chamber, feed high steam (0.7-1.0MPa), for the hot water in the cavity heats once more, when water temperature rises to 140 ℃-160 ℃ of the temperature of regulation, the coil pipe gas handling system is closed automatically, when descending, temperature opens gas handling system automatically, move in circles, until reaching official hour, sulfuration finishes.
Owing to adopted technique scheme, realized the accurate control of temperature under the authorized pressure state, make the organic cooperation of vulcanization of rubber three elements, effectively overcome the over cure of rubber and owed the sulphur phenomenon, guarantee that rubber can fully flow to each position of mould in the softening process that is heated, guaranteed the accuracy of workpiece dimension, Stability Analysis of Structures, rubber density height, stress at definite elongation is good, compression is little, and good aging properties and long service life are arranged.
The specific embodiment
Below in conjunction with actual example the present invention is further described.
1, designed a kind of metal die that inner chamber is arranged, the rubber bag has been carried out in the mould outside, and put gum cover, both mold ends has been sealed in rubber exterior.
2, will wrap the mould of having carried out rubber and be placed in the airtight sulfuration filling, two airtight cavitys of the inside and outside formation of mould have steam to add coil pipe in the mould outer chamber.
3, inject hot water in the external cavity of mould, and be forced into 1.0-2.0MPa with booster pump, (0.3-0.7MPa) sends into dies cavity with high steam, keeps constant compression force.
4, in the coil pipe of mould outer chamber, feed high steam (0.7-1.0MPa), for the hot water in the cavity heats once more.According to thermal technology principle, the temperature of the steam of 0.7-1.0MPa is higher than the boiling temperature of 100 ℃ water far away, at this moment, the water expanded by heating in the cavity, internal pressure increases.When its pressure surpassed operation pressure 1.0-2.0MPa, the control pressurer system that sulfuration is irritated can start pressure relief device and reduce pressure, and closes automatically when reaching setting.When water temperature rose to 140 ℃-160 ℃ of the temperature of regulation, the coil pipe gas handling system was closed automatically, opened gas handling system when temperature descends automatically.Move in circles, until reaching official hour, sulfuration finishes.
Claims (1)
1. superheated water platen press rubber transmission belt vulcanizing technology is characterized in that designing a kind of metal die that inner chamber is arranged, and the rubber bag is carried out in the mould outside, and put gum cover in rubber exterior, and both mold ends is sealed; To wrap the mould of having carried out rubber again and be placed in the airtight sulfuration filling, two airtight cavitys of the inside and outside formation of mould have steam to add coil pipe in the mould outer chamber; Inject hot water in the external cavity of mould, and be forced into 1.0-2.0MPa with booster pump, (0.3-0.7MPa) sends into dies cavity with high steam, keeps constant compression force; In the coil pipe of mould outer chamber, feed high steam (0.7-1.0MPa), for the hot water in the cavity heats once more, when water temperature rises to 140 ℃-160 ℃ of the temperature of regulation, the coil pipe gas handling system is closed automatically, when descending, temperature opens gas handling system automatically, move in circles, until reaching official hour, sulfuration finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010105918.4A CN102133783B (en) | 2010-01-26 | 2010-01-26 | Process for vulcanizing rubber transmission belt by overheating hydraulic pressure method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010105918.4A CN102133783B (en) | 2010-01-26 | 2010-01-26 | Process for vulcanizing rubber transmission belt by overheating hydraulic pressure method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102133783A true CN102133783A (en) | 2011-07-27 |
| CN102133783B CN102133783B (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010105918.4A Expired - Fee Related CN102133783B (en) | 2010-01-26 | 2010-01-26 | Process for vulcanizing rubber transmission belt by overheating hydraulic pressure method |
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| CN (1) | CN102133783B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10264186A (en) * | 1997-03-24 | 1998-10-06 | Bando Chem Ind Ltd | Manufacture of laminated vulcanized rubber article and vulcanizing device for use in vulcanizing process |
| CN1266770A (en) * | 2000-03-15 | 2000-09-20 | 华南理工大学 | Temp-varying heating process for vulcanizing thick rubber products and its intelligent control system |
| CN1830648A (en) * | 2005-03-08 | 2006-09-13 | 厦门富懋塑料工业有限公司 | Modular sleeve forming method and its device |
| CN101301777A (en) * | 2008-06-26 | 2008-11-12 | 中车集团南京七四二五工厂 | Sulfuration method of brake hose with water |
| CN101318363A (en) * | 2008-07-11 | 2008-12-10 | 青岛信森机电技术有限公司 | Driving belt vulcanizing boiler |
-
2010
- 2010-01-26 CN CN201010105918.4A patent/CN102133783B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10264186A (en) * | 1997-03-24 | 1998-10-06 | Bando Chem Ind Ltd | Manufacture of laminated vulcanized rubber article and vulcanizing device for use in vulcanizing process |
| CN1266770A (en) * | 2000-03-15 | 2000-09-20 | 华南理工大学 | Temp-varying heating process for vulcanizing thick rubber products and its intelligent control system |
| CN1830648A (en) * | 2005-03-08 | 2006-09-13 | 厦门富懋塑料工业有限公司 | Modular sleeve forming method and its device |
| CN101301777A (en) * | 2008-06-26 | 2008-11-12 | 中车集团南京七四二五工厂 | Sulfuration method of brake hose with water |
| CN101318363A (en) * | 2008-07-11 | 2008-12-10 | 青岛信森机电技术有限公司 | Driving belt vulcanizing boiler |
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| CN102133783B (en) | 2014-03-26 |
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Granted publication date: 20140326 Termination date: 20190126 |