CN101700688A - Large off-the-road (OTR) tire prevulcanization retreading equipment and use method - Google Patents
Large off-the-road (OTR) tire prevulcanization retreading equipment and use method Download PDFInfo
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- CN101700688A CN101700688A CN200910114528A CN200910114528A CN101700688A CN 101700688 A CN101700688 A CN 101700688A CN 200910114528 A CN200910114528 A CN 200910114528A CN 200910114528 A CN200910114528 A CN 200910114528A CN 101700688 A CN101700688 A CN 101700688A
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Abstract
The invention relates to large off-the-road (OTR) tire prevulcanization retreading equipment and a use method. A ring with a hollow inner cavity is formed in a folded die of the equipment; and the inner cavity is matched with the tire tread and the tire shoulder of a tire and has a smooth cure surface without tread blocks. Two clamping disks comprise platens and central cylinders fixedly connected with the two platens which are provided with opposite through holes; the two central cylinders are respectively inserted in a rim-mounting hole in the center of the tire from upside to downside; the two platens are respectively pressed and covered on an upper tire bead and a lower tire bead of the tire; clamping bolts penetrate through the two platens and are fastened by nuts; and gas nozzles of the clamping disks are connected with an air compressor. The use method comprises the following steps of: pasting a prevulcanization tread adhesive on the tire; mounting the clamping disks to seal the inner cavity of the tire; mounting the tire; folding the die; and heating the vulcanization die while pressing the tire by the gas nozzles to finish retreading and vulcanizing. The invention only heats the top and the shoulder of a tire, avoids damaging the tread, enables the retrodden tire to resist abrasion, piercing and cutting and have stable appearance quality, does not need a rim, a package envelope and a tire tube and reduces consumption.
Description
(1) technical field
The present invention relates to tyre retreading technique, be specially a kind of large off-the-road (OTR) tire prevulcanization retreading equipment and using method.
(2) background technology
The develop rapidly of mining activities both at home and abroad in recent years improves year by year to the demand of large-scale engineering machinery tire, and the renovation of big machinery engineering tyre is also risen day by day, and many companies and scientific research institution have begun the research of this respect.
At present the ripe method of large-scale engineering machinery method for renovating tyre mainly adopts modelling heat to turn over, and the main feature of this method has: technology is simple, product appearance is near new tyre, product size precision height.But modelling heat is turned over and had following shortcoming: 1. mould need be processed pattern block, and processing cost height, and same equipment replacement sulfurizing mould also can only vulcanize with a series of several specification tires, bigger cost; 2. the carcass of retreads is high temperature vulcanized through twice, and carcass is aging fast, has a strong impact on the service life of retreads; 3. wear-resisting, anti-cutting of retreads and anti-thorn poor performance.
Well-known cold the turning over of presulfurization can solve all shortcomings that heat is turned over, be several times that heat is turned over the service life of tire, but the large-scale engineering machinery tire is because bulky, adopt the renovation of traditional envelope presulfurization method to have following difficult point: 1. the envelope that does not have the large-scale engineering machinery tyre rebuilding to use at present, make envelope specially for this reason specially and must promote cost; But also having the loss problem of envelope, cost more will significantly rise; 2. the large-scale engineering machinery tire adopts the envelope method because tyre surface is thick, and limited to the tyre surface applied pressure, there is quality risk in product; 3. even make the spectacle case big envelope, envelope also is very difficult on the giant tire.Therefore have not yet to see the relevant report that the large-scale engineering machinery tire adopts the envelope prevulcanization retreading.
(3) summary of the invention
The purpose of this invention is to provide a kind of large-scale engineering machinery tire prevulcanization retreading equipment, need not to use the envelope and the inner tube of a tyre, the device fabrication cost is low, and loss is little.
Another object of the present invention provides a kind of using method of large-scale engineering machinery tire prevulcanization retreading equipment, and is with low cost, ensures the quality of products.
Large-scale engineering machinery tire prevulcanization retreading equipment of the present invention comprises the vulcanizer and the sulfurizing mould that is divided into upper and lower mould as main body, sulfurizing mould behind the matched moulds is formed with the annulus of hollow cavity, inner chamber partly matches with the crown for the treatment of retreads and tire shoulder, maximum inner diameter is slightly larger than and treats the retreads diameter at the bottom of the inner chamber, the inner chamber width is slightly larger than treats the retreads width, the inner chamber degree of depth is slightly larger than the distance for the treatment of retreads tyre surface top and sidewall, with treat that the contacted surface of internal cavity in retreads tyre surface top is a smooth surface, no pattern block.Also have two clamping disks, clamping disk comprises platen and affixed with it central tube, the diameter of central tube is less than treating retreads wheel rim installing hole diameter, the height of 2 clamping disk central tubes equals and treats 1/2 of rim width that retreads match, platen is vertical with the central shaft of central tube, the central shaft of central tube is through the center of platen, the diameter of platen is greater than treating retreads tyre bead diameter, there is the bcad seats that matches with the tyre bead for the treatment of retreads on the surface that platen contacts with tire, there is relative through hole at the center of two platens, the central tube of 2 clamping disks is treated the wheel rim installing hole at retreads center from inserting up and down respectively, the platen of 2 clamping disks respectively gland in the tyre bead up and down for the treatment of retreads, grip bolt passes the central through hole of 2 platens, nut fastening clamp bolt, fixing 2 clamping disks up and down.The valve that is interlinked to the outside in one of them clamping disk has, valve is connected with air compressor.
The using method step of large-scale engineering machinery tire prevulcanization retreading equipment of the present invention is as follows:
A, tyre surface cutting, cutting old tire tyre surface is removed stained tyre surface and is reached predetermined radial dimension;
B, tread rubber fit, and the adaptive tread rubber after the presulfurization is fitted on the tyre surface through cutting that steps A obtains;
C, installation clamping disk, the central tube of 2 clamping disks is respectively from the wheel rim installing hole at tire center of tread rubber that inserted applying that the B step obtains up and down, the platen difference gland of 2 clamping disks is in the tyre bead up and down of tire, fastening 2 clamping disks of grip bolt and nut, clamping disk sealing tyre cavity;
D, the sulfuration of dress mould, tire dress tire, matched moulds that the C step obtains, adopt steam or deep fat that sulfurizing mould is heated, keeping temperature is 120 degree～145 degree, and the valve by clamping disk injects gases at high pressure in tire simultaneously provides tyre vulcanization required interior pressure, and pressure is 0.5～1.0MPa, inner pressure of tire is pressed in the tyre surface on tire top the surface of internal cavity of sulfurizing mould, keep cure time 3～4 hours, and finished retreading vulcanizing, obtain retreads.
The advantage of large-scale engineering machinery tire prevulcanization retreading equipment of the present invention and using method is: 1, this equipment just heats tire top and shoulder, avoid injuring carcass, therefore have characteristics such as wear-resisting, the anti-thorn of traditional prevulcanization retreading tire, anti-cutting, have modelling heat simultaneously and turn over the same stable presentation quality; 2, adopt this equipment to need not to use wheel rim, envelope and the inner tube of a tyre, reduce consuming; 3, the sulfurizing mould inner surface does not have pattern block, and can change sulfurizing mould and clamping disk realizes that a machine vulcanizes multiple series and specification tire, compares the die cost that traditional modelling heat turns over and reduces greatly; 4, the compressed air of importing by the valve of clamping disk, can make inner pressure of tire reach desired value, assurance has enough pressure to tyre surface, tread rubber and tire are merged more steadily, ensure the quality of products, overcome envelope method prevulcanization retreading (mainly being large off-the-road (OTR) tire) and the quality problems that produce not enough tyre surface pressure.
(4) description of drawings
Fig. 1: the example structure schematic diagram of this large-scale engineering machinery tire prevulcanization retreading equipment;
Reference numeral is as follows:
1 vulcanizer; 2 sulfurizing moulds; 3 clamping disks; 4 valves; 5 tread rubbers; 6 tires; 7 grip bolts.
(5) specific embodiment
This large-scale engineering machinery tire prevulcanization retreading equipment embodiment comprises the vulcanizer 1 as main body, the sulfurizing mould 2 and the clamping disk 3 that are divided into upper and lower mould, as shown in Figure 1, its sulfurizing mould 2 is divided into upper and lower mould, become the annulus that hollow cavity is arranged behind the matched moulds, inner chamber partly matches with the crown and the tire shoulder of tire 6, maximum inner diameter is slightly larger than and treats retreads 6 diameters at the bottom of the inner chamber, the inner chamber width is slightly larger than treats retreads 6 width, the inner chamber degree of depth is slightly larger than the distance for the treatment of retreads 6 tyre surface tops and sidewall, and treats that the contacted surface of internal cavity in retreads 6 tyre surface tops is a smooth surface, no pattern block.Clamping disk 3 comprises platen and affixed with it central tube, the diameter of central tube is less than rim diameter, the height of 2 clamping disk 3 central tubes equals 1/2 of rim width, platen is vertical with the central shaft of central tube, the central shaft of central tube is through the center of platen, the diameter of platen is greater than treating retreads 6 tyre bead diameters, and there is the bcad seats that matches with the tyre bead for the treatment of retreads 6 on the surface that the platen of clamping disk 3 contacts with tire.There is relative through hole at the center of clamping disk 3 platens, the central tube of 2 clamping disks 3 respectively from insert the wheel rim installing hole treat retreads 6 centers up and down, the platen of 2 clamping disks 3 respectively gland on the tyre bead up and down for the treatment of retreads 6, grip bolt 7 passes the central through hole of 2 platens, nut fastening clamp bolt, fixing 2 clamping disks 3 up and down.The valve 4 that is interlinked to the outside in clamping disk 3 above being in has, valve 4 is connected with air compressor.
The using method step of large-scale engineering machinery tire prevulcanization retreading equipment of the present invention is as follows:
A, tire tread cutting, cutting old tire tyre surface is removed stained tyre surface and is reached predetermined radial dimension;
B, tread rubber fit, and the adaptive tread rubber 5 after the presulfurization is fitted on the crown position, tire top through cutting that steps A obtains;
C, installation clamping disk 3, the gland respectively of 2 clamping disks 3 in applying that the B step obtains the tyre bead up and down, 2 central tubes of tire 6 of tread rubber from insert tire 6 centre bores up and down, fastening 2 clamping disks 3 of grip bolt 7 and nut, the inner chamber of clamping disk 3 sealing tires 6;
D, the sulfuration of dress mould, tire 6 dress tires, matched moulds that the C step obtains, adopt steam or deep fat to sulfurizing mould 2 heating, keeping temperature is 130 degree, valve 4 by clamping disk 3 injects gases at high pressure in tire simultaneously provides tire 6 sulfurations required interior pressure, and pressure is 0.8MPa, keeps cure time 4 hours, finish retreading vulcanizing, obtain retreads.
The foregoing description is the specific case that purpose of the present invention, technical scheme and beneficial effect are further described only, and the present invention is defined in this.All any modifications of within scope of disclosure of the present invention, being made, be equal to replacement, improvement etc., all be included within protection scope of the present invention.
Claims (6)
1. large-scale engineering machinery tire prevulcanization retreading equipment comprises the vulcanizer (1) as main body and is divided into the sulfurizing mould (2) of upper and lower mould, it is characterized in that:
Be formed with the annulus of hollow cavity behind described sulfurizing mould (2) matched moulds, inner chamber partly matches with crown and the tire shoulder for the treatment of retreads (6), maximum inner diameter is slightly larger than and treats retreads (6) diameter at the bottom of the inner chamber, the inner chamber width is slightly larger than treats retreads (6) width, the inner chamber degree of depth is slightly larger than the distance for the treatment of retreads (6) tyre surface top and sidewall, and treats that the contacted surface of internal cavity in retreads (6) tyre surface top is a smooth surface; Also have 2 clamping disks (3), clamping disk (3) comprises platen and affixed with it central tube, the diameter of central tube is less than the diameter for the treatment of retreads (6) wheel rim installing hole, the height of 2 clamping disks (3) central tube equals and treats 1/2 of rim width that retreads (6) match, platen is vertical with the central shaft of central tube, the central shaft of central tube is through the center of platen, the diameter of platen is greater than treating retreads (6) tyre bead diameter, there is relative through hole at the center of platen, the central tube of 2 clamping disks (3) is treated the wheel rim installing hole at retreads (6) center from inserting up and down respectively, the platen of 2 clamping disks (3) respectively gland in the tyre bead up and down for the treatment of retreads (6), grip bolt (7) passes the central through hole of 2 platens, nut fastening clamp bolt, fixing 2 clamping disks (3) up and down; The valve (4) that is interlinked to the outside in one of them clamping disk (3) has, valve (4) is connected with air compressor.
2. large-scale engineering machinery tire prevulcanization retreading equipment according to claim 1 is characterized in that:
There is the bcad seats that matches with the tyre bead for the treatment of retreads (6) on the surface that the platen of described clamping disk (3) contacts with tire.
3. the using method of the described large-scale engineering machinery tire prevulcanization retreading equipment of claim 1 is characterized in that step is as follows:
A, tire tread cutting, cutting old tire tyre surface is removed stained tyre surface and is reached predetermined radial dimension;
B, tread rubber fit, and the adaptive tread rubber 5 after the presulfurization is fitted on the crown position, tire top through cutting that steps A obtains;
C, installation clamping disk (3), the central tube of 2 clamping disks (3) respectively from insert applying that the B step obtains up and down the wheel rim installing hole at the tire of tread rubber (6) center, the platen of 2 clamping disks (3) respectively gland in the tyre bead up and down for the treatment of retreads (6), fastening 2 clamping disks of grip bolt (7) and nut (3);
D, the sulfuration of dress mould, the tire that the C step obtains (6) dress tire, matched moulds, adopt steam or deep fat that sulfurizing mould (2) is heated, valve (4) by clamping disk (3) injects gases at high pressure in tire simultaneously provides tire (6) sulfuration required interior pressure, keep cure time, finish retreading vulcanizing, obtain retreads.
4. the using method of large-scale engineering machinery tire prevulcanization retreading equipment according to claim 3 is characterized in that:
Valve (4) by clamping disk (3) among the step D injects gases at high pressure in tire, the interior pressure of tire (6) is 0.5～1.0Mpa.
5. the using method of large-scale engineering machinery tire prevulcanization retreading equipment according to claim 3 is characterized in that:
Sulfurizing mould among the step D (2) is heated to 120 ℃～145 ℃.
6. the using method of large-scale engineering machinery tire prevulcanization retreading equipment according to claim 3 is characterized in that:
Sulfurizing mould among the step D (2) heating is 3 hours～4 hours to tire (6) the pressurising retention time simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101145280A CN101700688B (en) | 2009-11-04 | 2009-11-04 | Large off-the-road (OTR) tire prevulcanization retreading equipment and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101145280A CN101700688B (en) | 2009-11-04 | 2009-11-04 | Large off-the-road (OTR) tire prevulcanization retreading equipment and use method |
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| Publication Number | Publication Date |
|---|---|
| CN101700688A true CN101700688A (en) | 2010-05-05 |
| CN101700688B CN101700688B (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101145280A Expired - Fee Related CN101700688B (en) | 2009-11-04 | 2009-11-04 | Large off-the-road (OTR) tire prevulcanization retreading equipment and use method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115027083A (en) * | 2022-06-29 | 2022-09-09 | 季华实验室 | Non-pneumatic tyre retreading device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042637A (en) * | 2013-01-23 | 2013-04-17 | 青岛众益预硫化胎面工程有限公司 | Retreading and vulcanizing device for rubber tire without encapsulating compound sheath |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200960711Y (en) * | 2006-10-26 | 2007-10-17 | 张�诚 | Prevulcanization renewing complete equipment for waste and old tyre |
| CN201516660U (en) * | 2009-11-04 | 2010-06-30 | 中国化工橡胶桂林有限公司 | Pre-vulcanizing retreading equipment for large-sized off-the-road tire |
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2009
- 2009-11-04 CN CN2009101145280A patent/CN101700688B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115027083A (en) * | 2022-06-29 | 2022-09-09 | 季华实验室 | Non-pneumatic tyre retreading device |
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| CN101700688B (en) | 2011-10-05 |
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Granted publication date: 20111005 Termination date: 20161104 |