CN1833859A - Mfg. method of low-section mini forced load radial tyre - Google Patents

Abstract

A technology for manufacturing the low-profile miniature meridian tyre with strong load-bearing power includes such steps as manufacturing the tyre surface, tyre sides, triangular rubber and steel wire ring by use of banburying machine, extruder, calender and production line of steel wire ring, shaping and sulfurizing.

Description

Mfg. method of low-section mini forced load radial tyre

Affiliated technical field:

The present invention relates to a kind of manufacture method of radial-ply tyre manufacture method, particularly a kind of low-section mini forced load radial tyre.

Background technology:

Low-section mini forced load radial line tire is extraordinary industrial radial-ply tyre series, is extensive use of at European Region, and its main feature is: diameter is little, air pressure is high, load is big; Vehicle's center of gravity is low, and is easy to loading and unloading.This Series Tyre rim diameter is between 8-15 cun, and section changes from 50-90 series, and the low more manufacturing of section is difficult more.

Low-section mini forced load radial tyre tire manufacturing at home is still blank.At present, the country that produces this kind tire mainly concentrates on Japan, Korea S and Taiwan, because each national radial technology source is different, so manufacturing technology also is not quite similar, and technological process is each has something to recommend him.But tires that these countries produce all need madras handkerchief to solve the problem of wire loop joint perk, thereby this technology is complicated.

The invention task:

Purpose of the present invention to provide exactly a kind of technology simple, improve the quality of products, can fill the domestic gaps, substitute the Mfg. method of low-section mini forced load radial tyre of import.

The object of the present invention is achieved like this:

The first step: rubber and various auxiliary agent formulated by a certain percentage is good, be processed into elastomeric compound through banbury;

Second step: 1. elastomeric compound is through extruder extruded tread, sidewall, triangle glue;

2. use the high modulus low shrinkage polyester cord behind kiss-coating on the calender, and through 90 ° of width of cutting machine severing casing cloth that is 400～600mm;

3. use all-steel cord through the calender kiss-coating, and through the cutting machine severing steel wire belt that to become 24 ° of width be 100～160mm;

4. the interior line with rubber in the elastomeric compound rolls into inner liner through calender, and being reprocessed into thickness is that 1.2～1.6mm, width are the film of 300～600mm;

5. steel wire forms pierce tap behind steel wire extruder kiss-coating, and pierce tap shifts to an earlier date coiled wire loop after the prebuckling, sticks triangle glue after the wire loop presulfurization;

The 3rd step: parts process on make-up machine that second step made is fitted, and roll-forming becomes fetus;

The 4th step: fetus is packed on the mould of vulcanizer, tumble in air bag, feed steam and nitrogen, under the pressure of 2.2～2.4MPa, 180～189 ℃ temperature, vulcanize and cool off after 13～16 minutes, put in storage the back after testing.

The present invention compared with prior art has the following advantages:

1. because low-section mini forced load radial tyre belongs to blankly in China, thereby can fill the domestic gaps alternative import.

2. owing to adopted the various parts of banburying to make, moulding, sulfuration process, thereby have following characteristics:

1. the wire loop production technology has succinctly, makes things convenient for, efficient is high; The precision height; The characteristics such as tight of closing.Therefore common 10 cun bead wire ring productions need madras handkerchief because diameter is less, and the wire loop joint amasss easy perk.We have made the device of a cover elimination steel wire internal stress by oneself by research, have effectively solved steel wire nose problem, have cancelled madras handkerchief, have simplified production technology, have also guaranteed the wire loop diameter simultaneously.

2. to have packing good for moulding process, characteristics such as bubble rate is low, inherent quality is good.Because mini forced load tire pressure height, load is big, therefore use powerful higher body cord, this has just brought the anti-package difficulty to moulding, presses unreal, problems such as bubble is many, delamination, and we have made the lower compression roller and the back pressure roller of the moulding reverse-wrapped capsule of new imitative tire curve, imitative tire curve by oneself by research, because they and the curve of tire when each section moulding are approaching, therefore improve the pressing quality greatly, reduced the pressing distortion, improved product quality.

3. sulfuration process have the time short, efficient is high; Pollute characteristics such as little.Common miniature tire is because level is bigger, the thicker superheated water vulcanization that all adopts of carcass, we have transformed the central authority of vulcanizer by research, designed novel vulcanisation bladder, the attenuate balloon thickness has improved temperature in the sulfuration, the change superheated water is nitrogen, shortened cure time greatly, also reduced simultaneously coal-fired, pollution such as leak, simplified production technology, improved labor productivity.

The specific embodiment:

Low-section mini forced load radial line tire manufacturing method is made up of following steps, with 10 " tire is an example:

The first step: rubber and various auxiliary agent formulated by a certain percentage is good, be processed into elastomeric compound through banbury.Various and auxiliary agent is 10# natural rubber, 20# natural rubber, 1712 butadiene-styrene rubber, 1500 butadiene-styrene rubber, high-cis butadiene rubber, N115, N375, N326, N660 carbon black, CZ, NOBS, diphenylguanidine, age resistor 4020, RD, aromatic naphtha, plasticizer A, tert butyl phenolic resin, octyl group phenolic tackifying resins, sticking A, resorcinol, HMT, zinc oxide, stearic acid, insoluble sulfuy RS-6033, sofril, and the ratio of rubber and various auxiliary agents is pressed the prescription of BLT, FOA, EMI, TAS, APL, LSU, TRI.These prescriptions are products of my the autonomous research of company, can buy from my company.

Second step: 1. elastomeric compound is through extruder extruded tread, sidewall, triangle glue.Tyre surface forms by compound the extruding of BLT, EMI, and the sidewall forms with EMI and compound the extruding of TAS, and triangle glue is extruded with TRI.

2. use high modulus low shrinkage polyester cord 1670DSP behind kiss-coating on the calender, and to become 90 ° of width through the cutting machine severing be the casing cloth of 490mm, 410mm.

3. use all-steel cord through the calender kiss-coating, and the steel wire belt that becomes 24 ° of width to be through the cutting machine severing, the belt steel wire can adopt the 2+7*0.22 all-steel cord.

4. the interior line with rubber in the elastomeric compound rolls into inner liner through calender, and being reprocessed into thickness is that 1.2mm, width are the film of 340mm, and interior line with rubber adopts the LSU sizing material.

5. steel wire forms pierce tap behind steel wire extruder kiss-coating, and pierce tap shifts to an earlier date coiled wire loop after the prebuckling,

Stick triangle glue after the wire loop presulfurization.Wire loop is that to adopt diameter be the steel wire of 0.96mm, and is to enter winding system after two wheels of 40mm, 60mm make the steel wire prebuckling to be entwined through diameter, adopts * 5 layers of 5 rows' structure.

The 3rd step: parts process on make-up machine that second step made is fitted, and roll-forming becomes fetus.1014 special molding machines are adopted in moulding, can buy from exquisite dynamo-electric Co., Ltd.

The 4th step: fetus is packed on the mould of vulcanizer, tumble in air bag, feed steam and nitrogen, under 2.2～2.4MPa, 180～189 ℃ temperature, vulcanize and cool off after 13～16 minutes, put in storage the back after testing.Vulcanizer adopts special-purpose 42, and " vulcanizer can be bought from exquisite dynamo-electric Co., Ltd.

Claims (1)

1. the manufacture method of a low-section mini forced load radial tyre is characterized in that it may further comprise the steps:

The first step: rubber and various auxiliary agent formulated by a certain percentage is good, be processed into elastomeric compound through banbury;

Second step: 1. elastomeric compound is through extruder extruded tread, sidewall, triangle glue;

2. use the high modulus low shrinkage polyester cord behind kiss-coating on the calender, and to become 90 °, width through the cutting machine severing be the casing cloth of 400～600mm;

3. use all-steel cord through the calender kiss-coating, and to become 66 °, width with horizontal plane through cutting machine severing one-tenth be the steel wire belt of 100～160mm;

4. the interior line with rubber in the elastomeric compound rolls into inner liner through calender, and being reprocessed into thickness is that 1.2～1.6mm, width are the film of 300～600mm;

5. steel wire forms pierce tap behind steel wire extruder kiss-coating, and pierce tap shifts to an earlier date coiled wire loop after the prebuckling, sticks triangle glue after the wire loop presulfurization;

The 3rd step: parts process on make-up machine that second step made is fitted, and roll-forming becomes fetus;

The 4th step: fetus is packed on the mould of vulcanizer, tumble in air bag, feed steam and nitrogen, under 2.2～2.4MPa pressure, 180～189 ℃ temperature, vulcanize and cool off after 13～16 minutes, put in storage after testing.