CN105291455A - Coating and vulcanizing method of rubber hose - Google Patents
Coating and vulcanizing method of rubber hose Download PDFInfo
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- CN105291455A CN105291455A CN201510877612.3A CN201510877612A CN105291455A CN 105291455 A CN105291455 A CN 105291455A CN 201510877612 A CN201510877612 A CN 201510877612A CN 105291455 A CN105291455 A CN 105291455A
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- rubber hose
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Abstract
The invention provides a coating and vulcanizing method of a rubber hose. According to the invention, a thermoplastic coating body is dried, a semi-finished product of the rubber hose penetrates through a fusion groove containing a fused coating body, and the whole rubber hose is coated with the fused coating body through an extrusion die; the coated rubber hose passes through a cooling pipe, the fused coating body is cooled to form a coating layer, and the coating layer shrinks on the rubber hose; a drawing machine draws the rubber hose coated with the thermoplastic coating body and winds the rubber hose around a rolling drum; then the hose is vulcanized, a stripping machine strips the coating layer formed by the thermoplastic coating body, and the stripped coating layer can be reused. According to the method, the integral uniformity of rubber hose products is good, the operation strength is low, and coating material can be reused so that the cost can be lowered greatly; polyamide resin material is good in toughness and easy to strip, special equipment is not needed, the appearance quality of the rubber hose can be remarkably improved, and the rubber hose can be easily and widely popularized.
Description
Technical field
The present invention relates to rubber technical field, particularly relate to a kind of coated vulcanization process of rubber hose.
Background technology
As everyone knows, external various countries flexible pipe industrial expansion and automobile, lathe, building industry, underground mining, oil exploitation and offshore oil drilling have close contacting, and flexible pipe shows powerful vitality as the accessory of above-mentioned industry.Flexible pipe industry has the history of 40 years in China, has now become one of China's rubber industry major industry.In recent years, along with China's automobile making, oil exploitation, agricultural water conservancy, marine chemical industry and building industry develop rapidly, the demand of flexible pipe is improved day by day; Draw close with international standard simultaneously, facilitate updating of traditional flexible pipe technique, production method, standard and structure.
Sulfuration is last technical process that rubber is produced, and is also one of main technique of rubber processing.In rubber hose is produced, sulfuration makes to have higher bonding strength between rubber and strengthening course, makes it into as a whole important process, is also the important step ensureing and improve the quality of products.Traditional vulcanization process before flexible pipe sulfuration, twines water cloth on its semi-finished product or lead-sheathing is fastening, carries out in steam vulcanization (cure) tank in batches.Although the sulfuration of bag water cloth also can increase the compactness of flexible pipe, its outward appearance is bad.General employing lead press cure can make flexible pipe obtain smooth outer surface, but this method significant drawbacks there is serious pollution problem, this is because lead used in lead-sheathing technique is very easily oxidized in melting and sulfidation, and with the pollution that lead steam causes.
In order to overcome shortcoming that conventional cure method exists and not reduce the properties of rubber hose, from the sixties, external many rubber companies and rubber manufacturing machinery company are making great efforts the various different flexible pipe vulcanization process of research always.
Summary of the invention
For the problems referred to above, the invention provides the coated vulcanization process of a kind of small investment, free of contamination rubber hose, effectively can solve the appearance quality of flexible pipe, plumbous pollution can be avoided again.
For realizing above-mentioned purpose of the present invention, the invention provides a kind of coated vulcanization process of rubber hose, comprising the following steps.
Step 1, dried by thermoplastic covering body, described thermoplastic covering body is made up of the raw material of following quality: polyamide-based resin 30g, Activity of Nanosized Zinc Peroxide 15g, linear paraffin oil 3g, talcum powder 5g.
Step 2, the rubber hose semi-finished product with inner glue layer, enhancement layer and outer glue-line are equipped with the molten groove of melting cladding through one, in molten groove, make the cladding of melting be coated on the whole surface of rubber hose by extruder die; Described rubber hose surface of semi-finished will keep clean drying, without moisture, without greasy dirt impurity.
Step 3, coated after rubber hose through cooling tube, the cladding of melting is cooled into clad; Described clad is contracted in rubber hose.
Step 4, be surrounded by the rubber hose of thermoplastic covering body with hauling machine traction, and spooling is batching on drum; Hauling speed is 800rmin
-1.
Step 5, then sulfuration flexible pipe at a given temperature and pressure.
Step 6, use stripping machine peel off the clad that thermoplastic covering body is formed, and the clad peeled can reuse.
The fusing point of described polyamide-based resin is 204 ~ 232 DEG C.
The thickness on the whole surface of the coated flexible pipe of described step 2 nylon melt is 0.5 ~ 1.25mm.
The cooling tube of described step 3 is spiral coil cooling tube.
In described step 5, temperature is 150 ~ 160 DEG C, and pressure is 10 ~ 150MPa.
Compared with prior art beneficial effect of the present invention.
The coated vulcanization process of rubber hose provided by the invention, such that the overall uniformity of rubber hose product is good, manipulation strength is little, and reusing of clad material can reduce costs greatly; Further, polyamide-based resin toughness of material is good, and self lubricity is excellent, peels off simple, without the need to special equipment, can significantly improve the exterior quality of rubber hose, adapt to the new demand of flexible pipe industrial development, be easy to promote on a large scale.
Detailed description of the invention
The present invention is further described below in conjunction with specific embodiment.
The present embodiment provides a kind of coated vulcanization process of rubber hose, comprises the following steps.
Step 1, dried by thermoplastic covering body, described thermoplastic covering body is made up of the raw material of following quality: polyamide-based resin 30g, Activity of Nanosized Zinc Peroxide 15g, linear paraffin oil 3g, talcum powder 5g.This is containing polarity water imbibition group in the chemical constitution due to polyamide-based resin, and the moisture of its absorption can cause the inside of covered section to produce a large amount of honeycomb space, affects the quality of rubber hose.
Described talcum powder is white or off-white color, fine, without the powder of grittiness, hand touches with greasy feeling; Odorless, tasteless; Main component is the moisture magnesium silicate of talcum, there is lubricity, anti-to stick, help stream, fire resistance, acid-resisting, insulating properties, fusing point high, chemically torpescence, covering power well, softness, good luster, the absorption affinity excellent Wuli-Shili-Renli system approach such as strong, crystal structure due to talcum is stratiform, so have the trend and special slip that easily split into scale.
Step 2, the rubber hose semi-finished product with inner glue layer, enhancement layer and outer glue-line are equipped with the molten groove of melting cladding through one, in molten groove, make the cladding of melting be coated on the whole surface of rubber hose by extruder die; The thickness on the described whole surface of coated flexible pipe is 1mm; Described rubber hose surface of semi-finished will keep clean drying, without moisture, without greasy dirt impurity.
Step 3, coated after rubber hose through spiral coil cooling tube, the cladding of melting is cooled into clad; Described clad is contracted in rubber hose.
Step 4, be surrounded by the rubber hose of thermoplastic covering body with hauling machine traction, and spooling is batching on drum; Hauling speed is 800rmin
-1.The speed of traction is most important, and excessive velocities easily causes clad excessively thin; Speed is crossed and clad can be made again blocked up slowly, and easily causes mouthful mould to block.
Step 5, then vulcanized rubber flexible pipe under 150 DEG C and 20MPa.The setting of temperature has significant meaning, and temperature is too high, and product can be made to contain bubble; Temperature is too low, plastifies bad, intensity difference, easily coated discrepancy occurs.
Sulfide stress is the key factor ensureing rubber hose size, density of texture, physical and mechanical properties, also can ensure the smooth zero defect of piece surface simultaneously, reach the sealing of goods, airtight requirement.Sulfide stress is not random, and sulfide stress is excessive except energy mold damage, equipment, consumption electric energy, equally also can affect the performance of goods.
Step 6, use stripping machine peel off the clad that thermoplastic covering body is formed, and the clad peeled can reuse.
Claims (5)
1. a coated vulcanization process for rubber hose, is characterized in that, comprise the following steps:
Step 1, dried by thermoplastic covering body, described thermoplastic covering body is made up of the raw material of following quality: polyamide-based resin 30g, Activity of Nanosized Zinc Peroxide 15g, linear paraffin oil 3g, talcum powder 5g;
Step 2, the rubber hose semi-finished product with inner glue layer, enhancement layer and outer glue-line are equipped with the molten groove of melting cladding through one, in molten groove, make the cladding of melting be coated on the whole surface of rubber hose by extruder die; Described rubber hose surface of semi-finished will keep clean drying, without moisture, without greasy dirt impurity;
Step 3, coated after rubber hose through cooling tube, the cladding of melting is cooled into clad; Described clad is contracted in rubber hose;
Step 4, be surrounded by the rubber hose of thermoplastic covering body with hauling machine traction, and spooling is batching on drum; Hauling speed is 800rmin
-1;
Step 5, then sulfuration flexible pipe at a given temperature and pressure;
Step 6, use stripping machine peel off the clad that thermoplastic covering body is formed, and the clad peeled can reuse.
2. the coated vulcanization process of rubber hose as claimed in claim 1, it is characterized in that, the fusing point of described polyamide-based resin is 204 ~ 232 DEG C.
3. the coated vulcanization process of rubber hose as claimed in claim 1, it is characterized in that, the thickness on the whole surface of the coated flexible pipe of described step 2 nylon melt is 0.5 ~ 1.25mm.
4. the coated vulcanization process of rubber hose as claimed in claim 1, it is characterized in that, the cooling tube of described step 3 is spiral coil cooling tube.
5. the coated vulcanization process of rubber hose as claimed in claim 1, it is characterized in that, in described step 5, temperature is 150 ~ 160 DEG C, and pressure is 10 ~ 150MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877612.3A CN105291455A (en) | 2015-12-04 | 2015-12-04 | Coating and vulcanizing method of rubber hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877612.3A CN105291455A (en) | 2015-12-04 | 2015-12-04 | Coating and vulcanizing method of rubber hose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105291455A true CN105291455A (en) | 2016-02-03 |
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ID=55189595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877612.3A Pending CN105291455A (en) | 2015-12-04 | 2015-12-04 | Coating and vulcanizing method of rubber hose |
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| Country | Link |
|---|---|
| CN (1) | CN105291455A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081678A (en) * | 2018-01-03 | 2018-05-29 | 盖茨液压技术（常州）有限公司 | Fork truck woven tube and its manufacturing method |
| CN115197499A (en) * | 2022-08-19 | 2022-10-18 | 华南农业大学 | Preparation method of modified plastic for plastic-coated vulcanization process for hydraulic rubber pipe production |
-
2015
- 2015-12-04 CN CN201510877612.3A patent/CN105291455A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081678A (en) * | 2018-01-03 | 2018-05-29 | 盖茨液压技术（常州）有限公司 | Fork truck woven tube and its manufacturing method |
| CN108081678B (en) * | 2018-01-03 | 2020-04-14 | 盖茨液压技术（常州）有限公司 | Braided tube for forklift and manufacturing method thereof |
| CN115197499A (en) * | 2022-08-19 | 2022-10-18 | 华南农业大学 | Preparation method of modified plastic for plastic-coated vulcanization process for hydraulic rubber pipe production |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |