CN103481518A - Manufacturing technology of envelopment sleeve for mine giant tire remanufacturing - Google Patents

Abstract

The present invention relates to the technical field of tire remanufacturing, particularly to a manufacturing technology of an envelopment sleeve for mine giant tire remanufacturing. The manufacturing technology comprises five steps such as sheet preparation, attaching, shaping, sulfurization, and inner hole and gas hole arrangement. According to the manufacturing technology, the envelopment sleeve for mine giant tire remanufacturing can be manufactured without giant mold processing and the glue injection machine.

Description

A kind of giant mining tire is manufactured the manufacturing technology with envelope again

Technical field

The present invention relates to tire re-manufacturing technology field, be specifically related to a kind of giant mining tire and manufacture again the manufacturing technology with envelope.

Background technology

The envelope cross section is annular, and the inner circle of annulus is called endoporus, on the outer surface of annulus, is provided with pore.In the technique of manufacturing again tire, at first precured tread and carcass are fit together by intermediate rubber, then its integral body is inserted in envelope from endoporus, the endoporus up and down of envelope is sealed, from pore, envelope inside is vacuumized again, put into the sulfuration kettle cure, inflation after sulfuration, dismounting, obtain retreads.

Envelope can be isolated the air in vulcanizing tank and carcass in sulfidation, forms two separate space, and the isolation hot-air contacts with carcass, can effectively protect carcass, prevents the thermo-oxidative ageing of carcass, extends the service life of carcass; In tank, in Plenum Process, the tank internal pressure passes to vulcanized tyre by envelope, and the gas between precured tread and carcass is discharged by envelope, and precured tread and carcass are combined closely, and has guaranteed the vulcanized quality of tire.Visible envelope plays very crucial effect in the technique of manufacturing again tire.

Traditional envelope preparation technology adopts injection-mould-integral forming method, and its step is as follows: 1, refining glue: the elastomeric compound that envelope is used is manufactured in preparation; 2, injecting glue: select the mould consistent with envelope model to be prepared, with injector by the elastomeric compound high-pressure injection in mould, the external form of this mould is consistent with the size and shape of envelope, and has inside and outside two-layerly, two-layer inside is hollow; 3, sulfuration: finally mould is positioned in vulcanizing tank and is vulcanized; 4, inflate hole: take out after sulfuration, obtain the annular of required model, then on the surface of annulus, pore is set, obtain envelope from mould.

But above-mentioned injection-mould-integral forming method process is not suitable for manufacturing for the preparation of the giant mining tire envelope of use again, this is because first: die cost is higher, the gauge size of envelope need to be consistent with mould, huge envelope size is larger, the outside diameter of its annulus is more than 3.5m, its needed die size is larger, and mould is corresponding one by one with the size of envelope, therefore for preparing the giant tyre envelope of different model, just need to prepare the huge mould of a series of corresponding models, so just increased greatly the input cost of mould.Second: can't complete the injecting glue step, the envelope that the giant mining retreads are used is because size is larger, its glue consumption is also very large, take 36.00R51 as example, the weight of its finished product reaches 80 kilograms, and the injecting glue capacity of injector of the prior art is 20～30 kilograms to the maximum, therefore can't complete the injecting glue step.In a word, conventional bag big envelope preparation technology can't realize that the giant mining tire manufactures the production with envelope again.

In sum, the giant mining tire is manufactured the great difficult problem that becomes restriction giant mining tire re-manufacturing technology with the preparation of envelope again.

Summary of the invention

For addressing the above problem, the object of the present invention is to provide a kind of giant mining tire to manufacture again the manufacturing technology with envelope, needn't process huge mould, also without glue-injection machine, just can produce the giant mining tire and manufacture again and use envelope.

Technical scheme of the present invention is: a kind of giant mining tire is manufactured the manufacturing technology with envelope again, comprises the steps:

Step 1, film-making: according to the model of envelope, elastomeric compound is made to circular film;

Step 2, laminating: the edge on circular film surface arranges the adhesive tape of a circle annular, in the inside of adhesive tape, it is isolated area, after the isolated area of the circular film of two formed objects is coated interleaving agent, by two neat fitting together of film, and with pressure roller, the adhesive tape compacting is formed to double-layer film;

Step 3, typing: the double-layer film after laminating is wrapped on format roll closely, and water cloth is wrapped in the double-layer film outside closely, and the two ends of water cloth are fixed; The circular cross-section girth of described format roll is slightly larger than the diameter of circular film;

Step 4, sulfuration: water cloth, double-layer film after typing are positioned over to pan vulcanization together with format roll, and double-layer film vulcanizes as adhesive tape is combined as a whole, isolated area keeps independently overall structure mutually;

Step 5 arranges endoporus and pore: take out integrally-built film after sulfuration, dismiss the glue of the gentle hole site of endoporus, obtain envelope.

Optimize, the diameter of format roll is 1.8m.

Optimize, the concrete operations of step 1 film-making are the model according to envelope, at first elastomeric compound is pressed into to the rectangle film of the formed objects of multi-disc desired thickness, then the edge of rectangle film is used to the pressure roller compacting after mutually splicing, finally be cut into the circular film of required specification.

Optimize, in step 1, the thickness of rectangle film is 2～4mm, and edge's thickness of splicing is slightly little mutually.

Optimize, instep 2, also between the adhesive tape of circular film and isolated area, a circle isolation strip is set, paste one deck glassine paper on the isolation strip of the circular film of two formed objects after, then by two neat fitting together of film.

Optimize, when instep 2, water cloth is wound around the double-layer film outside, at first the coaster of water cloth from being positioned at floor rails drawn, after its end is wound around a circle successively on two uneven bars that are positioned at middle part, be wrapped in again on double-layer film, along with the rotation of format roll and the movement of coaster, water cloth is wrapped in to the double-layer film outside closely.

Optimize, instep 2, in the double-layer film outside, be wound around water cloth more than 2 layers.

Optimize, instep 2, in the double-layer film outside, be wound around 3 layers of water cloth.

Optimize, instep 2, interleaving agent adopts silicone oil and talcum powder.

In step 1, compacting rectangle film adopts general rolling equipment.

The spliced rectangle film of compacting in step 1, instep 2, the compacting adhesive tape can adopt the cylindrical pressure roller of holding by splicing place or adhesive tape compacting.

The circular cross-section girth of format roll described in step 3 is slightly larger than the diameter of circular film, occurs after can avoiding film to be wrapped on format roll overlapping.

The external diameter of giant mining tire of the prior art is generally between 3.2-4.5m, the diameter of corresponding needed envelope is between 4.5-5.5m, therefore the diameter of corresponding format roll is 1.5-1.8m, prepare format roll that a diameter is 1.8m and just can meet the preparation requirement of all model giant tyres in prior art, reduce equipment cost, improved the utilization rate of equipment.

Beneficial effect of the present invention is:

1, by adopting double-layer film-water cloth, format roll typing method, needn't prepare huge mould, also without glue-injection machine, just can produce the giant mining tire and manufacture again and use envelope, save cost, solve a difficult problem that restricts giant mining tire re-manufacturing technology.

2, the present invention adopts rolling equipment to make two identical circular films, forms overall structure after edge laminating, intermediate isolating, sulfuration, obtains envelope after cutting out endoporus, pore, and the preparation method is simple, need not adopt glue-injection machine, and cost is lower.

3, the present invention adopts format roll that diameter is 1.8m just can meet the preparation requirement of all model giant tyres in prior art, has reduced equipment cost, has improved the utilization rate of equipment.

4, the format roll that is 1.8m by diameter in vulcanisation step of the present invention is put into vulcanizing tank, puts into vulcanizing tank with the mould that needs in prior art diameter is surpassed to 4.5m and compares, and has improved the simplicity of operation, has reduced taking space.

5, the present invention obtains circular film by elastomeric compound by first making the mode of cutting out after rectangle film, splicing, not only solve the difficulty that rolling equipment can't suppress the circular film of standard, also avoided a preparation work of the large-scale film that working strength is larger.

6, the present invention adopts the mode of the typing of water cloth and format roll and sulfuration, and by double-layer film and water cloth and format roll are wound around closely, water cloth plays with format roll the effect that the interior hot-air of isolation vulcanizing tank contacts with double-layer film; In sulfidation, the after-contraction of being heated of water cloth, in tank, heat of compression air is also exerted pressure to double-layer film by water cloth simultaneously, under double-deck effect, force the residual gas in double-layer film to be discharged, make the envelope surfacing made, even thickness has been avoided the generation of the phenomenons such as the local foaming of envelope, distortion simultaneously.

The accompanying drawing explanation

Fig. 1 is the circular film schematic diagram of the individual layer instep 2;

Fig. 2 is spliced rectangle film schematic diagram in step 1;

The circular ring section schematic diagram that Fig. 3 is the finished product envelope;

The device schematic diagram that Fig. 4 is winding water cloth in step 3.

1, adhesive tape; 2, isolation strip; 3, isolated area; 4, rectangle film splicing place; 5, pore; 6, endoporus; 7, double-layer film; 8, format roll; 9, uneven bars; 10, coaster.

The specific embodiment

Illustrate the present invention below in conjunction with the drawings and specific embodiments,

Take 36.00R51 as example, and its diameter is 3.2m, and this giant tyre that present embodiment provides is manufactured the manufacturing technology with envelope again, comprises the steps:

Step 1, film-making: according to the model of envelope, at first with rolling equipment, elastomeric compound being pressed into to 6 thickness is the rectangle film that 2.5-3mm, size are 5 * 0.8m, then the edge of rectangle film is used to the pressure roller compacting after mutually splicing, finally being cut into diameter is the circular film of 4.5m.Rectanglefilm splicing place 4 thickness are slightly little.

Step 2, laminating: the edge on circular film surface arranges the adhesive tape 1 of the annular that a circle width is 60mm, in the inside of adhesive tape 1, it is isolated area 3, onecircle isolation strip 2 is set between adhesive tape 1 and isolated area 3, after the isolated area 3 of the circular film of two formed objects is coated on interleaving agent silicone oil and talcum powder,isolation strip 2 and is pasted one deck glassine paper, by two neat fitting together of film, and with pressure roller, adhesive tape 1 compacting is formed to double-layer film 7;

Step 3, typing: the double-layer film 7 after laminating is wrapped onformat roll 8 closely, then at 3 layers of water cloth of double-layer film 7 outside windings, concrete steps are: at first by water cloth, the coaster from being positioned at floor rails 10 is drawn, after its end is wound around a circle successively on two uneven bars 9 that are positioned at middle part, be wrapped in again on double-layer film 7, along with the rotation offormat roll 8 and the movement ofcoaster 10, water cloth be wrapped in to double-layer film 7 outsides closely; Finally the two ends of water cloth are fixed; The circular cross-section girth of describedformat roll 8 is slightly larger than the diameter of circular film; The diameter of describedformat roll 8 is 1.8m.

Step 4, sulfuration: water cloth, double-layer film 7 after typing are positioned over to pan vulcanization together withformat roll 8, and double-layer film vulcanizes as adhesive tape is combined as a whole, isolated area 3 keeps independently overall structure mutually;

Step 5 arranges endoporus and pore: take out integrally-built film after sulfuration, dismiss the glue of endoporus 6 and pore 5 positions, obtain envelope.

The spliced rectangle film of compacting in step 1, instep 2, the compacting adhesive tape can adopt the cylindrical pressure roller of holding by splicing place or adhesive tape compacting.

The circular cross-section girth of format roll described in step 3 is slightly larger than the diameter of circular film, occurs after can avoiding film to be wrapped on format roll overlapping.

The external diameter of giant mining tire of the prior art is generally between 3.2-4.5m, the diameter of corresponding needed envelope is between 4.5-5.5m, therefore the diameter of corresponding format roll is 1.5-1.8m, prepare format roll that a diameter is 1.8m and just can meet the preparation requirement of all model giant tyres in prior art, reduce equipment cost, improved the utilization rate of equipment.

The characteristics of present embodiment are:

By adopting double-layer film-water cloth, format roll typing method, needn't prepare huge mould, also without glue-injection machine, just can produce the giant mining tire and manufacture again and use envelope, saved cost, solved a difficult problem that restricts giant mining tire re-manufacturing technology.

Present embodiment adopts rolling equipment to make two identical circular films, forms overall structure after edge laminating, intermediate isolating, sulfuration, obtains envelope after cutting out endoporus, pore, and the preparation method is simple, need not adopt glue-injection machine, and cost is lower.

The format roll that present embodiment employing diameter is 1.8m just can meet the preparation requirement of all model giant tyres in prior art, has reduced equipment cost, has improved the utilization rate of equipment.

The format roll that is 1.8m by diameter in the present embodiment vulcanisation step is put into vulcanizing tank, puts into vulcanizing tank with the mould that needs in prior art diameter is surpassed to 4.5m and compares, and has improved the simplicity of operation, has reduced taking space.

Present embodiment obtains circular film by elastomeric compound by first making the mode of cutting out after rectangle film, splicing, not only solve the difficulty that rolling equipment can't suppress the circular film of standard, also avoided a preparation work of the large-scale film that working strength is larger.

Present embodiment adopts the mode of water cloth and format roll typing and sulfuration, and by double-layer film and water cloth and format roll are wound around closely, water cloth plays with format roll the effect that the interior hot-air of isolation vulcanizing tank contacts with double-layer film; In sulfidation, the after-contraction of being heated of water cloth, in tank, heat of compression air is also exerted pressure to double-layer film by water cloth simultaneously, under double-deck effect, force the residual gas in double-layer film to be discharged, make the envelope surfacing made, even thickness has been avoided the generation of the phenomenons such as the local foaming of envelope, distortion simultaneously.

Claims (9)

1. a giant mining tire is manufactured the manufacturing technology with envelope again, it is characterized in that, comprises the steps:

Step 1, film-making: according to the model of envelope, elastomeric compound is made to circular film;

Step 2, laminating: the edge on circular film surface arranges the adhesive tape of a circle annular, in the inside of adhesive tape, it is isolated area, after the isolated area of the circular film of two formed objects is coated interleaving agent, by two neat fitting together of film, and with pressure roller, the adhesive tape compacting is formed to double-layer film;

Step 3, typing: the double-layer film after laminating is wrapped on format roll closely, and water cloth is wrapped in the double-layer film outside closely, and the two ends of water cloth are fixed; The circular cross-section girth of described format roll is slightly larger than the diameter of circular film;

Step 4, sulfuration: water cloth, double-layer film after typing are positioned over to pan vulcanization together with format roll, and double-layer film vulcanizes as adhesive tape is combined as a whole, isolated area keeps independently overall structure mutually;

Step 5 arranges endoporus and pore: take out integrally-built film after sulfuration, dismiss the glue of the gentle hole site of endoporus, obtain envelope.

2. giant mining tire according to claim 1 is manufactured the manufacturing technology with envelope again, and it is characterized in that: the diameter of format roll is 1.8m.

3. giant mining tire according to claim 2 is manufactured the manufacturing technology with envelope again, it is characterized in that: the concrete operations of step 1 film-making are the model according to envelope, at first elastomeric compound is pressed into to the rectangle film of the formed objects of multi-disc desired thickness, then the edge of rectangle film is used to the pressure roller compacting after mutually splicing, finally be cut into the circular film of required specification.

4. giant mining tire according to claim 3 is manufactured the manufacturing technology with envelope again, and it is characterized in that: in step 1, the thickness of rectangle film is 2～4mm, and edge's thickness of splicing is slightly little mutually.

5. giant mining tire according to claim 4 is manufactured the manufacturing technology with envelope again, it is characterized in that: in step 2, also between the adhesive tape of circular film and isolated area, a circle isolation strip is set, paste one deck glassine paper on the isolation strip of the circular film of two formed objects after, then by two neat fitting together of film.

6. giant mining tire according to claim 5 is manufactured the manufacturing technology with envelope again, it is characterized in that: when in step 2, water cloth is wound around the double-layer film outside, at first the coaster of water cloth from being positioned at floor rails drawn, after its end is wound around a circle successively on two uneven bars that are positioned at middle part, be wrapped in again on double-layer film, along with the rotation of format roll and the movement of coaster, water cloth is wrapped in to the double-layer film outside closely.

7. giant mining tire according to claim 6 is manufactured the manufacturing technology with envelope again, it is characterized in that: in step 2, in the double-layer film outside, be wound around water cloth more than 2 layers.

8. giant mining tire according to claim 7 is manufactured the manufacturing technology with envelope again, it is characterized in that: in step 2, in the double-layer film outside, be wound around 3 layers of water cloth.

9. manufacture the manufacturing technology with envelope according to the described any giant mining tire of claim 1-8 again, it is characterized in that: in step 2, interleaving agent adopts silicone oil and talcum powder.

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