CN113085239A - Tire retreading process - Google Patents
Tire retreading process Download PDFInfo
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- CN113085239A CN113085239A CN202110410657.5A CN202110410657A CN113085239A CN 113085239 A CN113085239 A CN 113085239A CN 202110410657 A CN202110410657 A CN 202110410657A CN 113085239 A CN113085239 A CN 113085239A
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- Prior art keywords
- tire
- controlled
- tread
- retreading
- pressure
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000001035 drying Methods 0.000 claims abstract description 18
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 238000004073 vulcanization Methods 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 238000005498 polishing Methods 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 claims description 10
- 239000007767 bonding agent Substances 0.000 claims description 8
- 238000005336 cracking Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000012795 verification Methods 0.000 claims description 5
- 230000032798 delamination Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract description 2
- 238000009966 trimming Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/54—Retreading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/54—Retreading
- B29D2030/541—Abrading the tyre, e.g. buffing, to remove tread and/or sidewalls rubber, to prepare it for retreading
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
Abstract
The invention relates to a tire retreading process, which comprises the following steps: the method comprises the following steps: judging whether the tire meets the retreading standard or not, and cleaning up the qualified tire; step two: polishing the surface of the tire by a polisher, wherein the roughness of the surface of the polished tire reaches a preset range value; step three: inflating the tire body; step four: placing the tire in an extruder, and driving the tread rubber to be attached to the tread at high pressure by the extruder; step five: rolling and molding the tire tread by using rolling equipment; step six: conveying the formed tire to a drying room for drying; step eight: the treated tire is verified and trimmed. Whether reach the standard of reutilization through newly judging the tire, improve the life of tire, further strengthen the shaping in tire later stage through stoving and vulcanization processing, reduce the phenomenon of later stage fracture, further improve the security of tire through check-up and repairment at last.
Description
Technical Field
The invention particularly relates to a tire retreading process.
Background
With the development of the automobile manufacturing industry, the consumption of tires is more and more, how to recycle waste tires becomes a social topic under the environment of low carbon and environmental protection advocated in China at present, and the recycling of tire carcasses can save a large amount of rubber and metal resources, can also avoid environmental failure caused by tire waste, and has great economic and social benefits.
At present, the common method for retreading the old tire is to re-emboss the old tire or perform high-temperature secondary forming, but the operation methods cause large investment cost, poor wear resistance of the manufactured tire, easy cracking and low safety performance.
Disclosure of Invention
The invention aims to provide a tire retreading process which can effectively solve the technical problems.
In order to achieve the purpose of the invention, the following technical scheme is adopted: a process for retreading a tire comprising the steps of:
the method comprises the following steps: judging whether the tire meets the retreading standard or not, and cleaning up the qualified tire;
step two: polishing the surface of the tire by a polisher, wherein the roughness of the surface of the polished tire reaches a preset range value;
step three: inflating the tire body;
step four: placing the tire in an extruder, and driving the tread rubber to be attached to the tread at high pressure by the extruder;
step five: rolling and molding the tire tread by using rolling equipment;
step six: conveying the formed tire to a drying room for drying;
step seven: putting the bonding agent into the joint of the tire body and the tread rubber, putting the tire body and the tread rubber into vulcanization equipment, and carrying out high-temperature pressure vulcanization treatment;
step eight: the treated tire is verified and trimmed.
Preferably, the tire standard in the step one comprises:
inner tire ring: breaking and nailing holes;
an outer tire ring: delamination, deformation, fracture;
delaminating, cracking and pricking the crown;
shoulder: cracking and deformation;
inside the tire: breaking, bagging and emptying.
Preferably, the tread roughness after buffing in step two is between RA3.2 and 6.3.
Preferably, the pressure of the inflation in the third stepControlling the concentration at 3.5-6kg/cm2In the meantime.
Preferably, the temperature of the extruder in the fourth step is controlled to be between 80 and 130 MPa, and the pressure of the extruder is controlled to be between 5 and 13 MPa.
Preferably, the drying temperature in the sixth step is controlled between 100 and 180 degrees.
Preferably, the vulcanization time in the seventh step is controlled to be 2-3 hours, the vulcanization temperature is controlled to be 80-120 ℃, and the pressure of the vulcanizing tank is controlled to be 4-7KG/cm2Simultaneously controlling the internal pressure of the tire to be 3.5-6kg/cm2。
Preferably, the trimming in step eight includes: cutting materials at a plurality of positions in the tire forming process; the verification comprises the following steps: the detection of whether the tire has a leak or bulge by a laser inspection machine and the detection of the internal pressure of the tire by pressurizing the inside of the tire.
Compared with the prior art, the invention has the following beneficial effects:
whether reach the standard of reutilization through newly judging the tire, improve the life of tire, and simultaneously, control tire roughness is in the within range later stage tread adhesion of being convenient for in the surface of the tire, strengthen the adhesion effect of tread rubber, carry out the frictional force of roll-in reinforcing post-forming mesa to the tread through roll-in equipment simultaneously, further strengthen the shaping in tire later stage through drying and vulcanization processing, reduce the phenomenon of later stage fracture, further improve the security of tire through check-up and finishing at last.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below.
FIG. 1 is a schematic diagram of the operation of a tire retreading process in an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1:
as shown in fig. 1, a tire retreading process includes the steps of:
SI, judging whether the tire meets the retreading standard or not, and cleaning up the qualified tire;
wherein the tire criteria include:
inner tire ring: and (4) fracture and nail hole, and judging whether the inner ring of the tire is fractured or the nail hole is formed by naked eyes.
An outer tire ring: delaminating, deforming and breaking, and judging whether the outer ring of the tire has delaminating, deforming and breaking through naked eyes.
The tire crown is delaminated, cracked and pricked, and whether the tire crown is delaminated, cracked and pricked is judged by naked eyes.
Inside the tire: and (3) breaking, bagging and hollowing, and detecting whether the phenomena of breaking, bagging and hollowing exist in the tire through a laser detector.
S2: and (3) grinding the surface of the tire through a grinding machine, wherein the roughness of the ground surface of the tire reaches a preset range value.
Wherein, the roughness of the ground tread is RA 3.2.
And S3, inflating the tire body.
Wherein the pressure of the inflation gas is controlled at 3.5kg/cm2In the meantime.
And S4, placing the tire in an extruder, and driving the tread rubber to be attached to the tread at high pressure by the extruder.
Wherein the temperature of the extruder is controlled to be 80 MPa, and the pressure of the extruder is controlled to be 5 MPa.
S5: and rolling and forming the tire tread by using a rolling device.
Wherein the pressure of the contact surface of the rolling device and the tire is controlled at 15 MPa.
S6: and (5) conveying the molded tire to a drying room for drying.
Wherein, the drying temperature is controlled between 100 ℃.
And S7, putting the bonding agent at the joint of the tire body and the tread rubber, putting the bonding agent into vulcanization equipment, and carrying out high-temperature pressure vulcanization treatment.
Wherein, the adhesive adopts the special instant glue for rubber and plastic.
Wherein, when vulcanizedThe pressure of the vulcanizing tank is controlled to be 4KG/cm2While the internal pressure of the tire is controlled to be 3.5kg/cm2。
S8: the treated tire is verified and trimmed.
Wherein the trimming comprises: cutting materials at a plurality of positions in the tire forming process; the verification comprises the following steps: the detection of whether the tire has a leak or bulge by a laser inspection machine and the detection of the internal pressure of the tire by pressurizing the inside of the tire.
Example 2:
as shown in fig. 1, a tire retreading process includes the steps of:
SI, judging whether the tire meets the retreading standard or not, and cleaning up the qualified tire;
wherein the tire criteria include:
inner tire ring: and (4) fracture and nail hole, and judging whether the inner ring of the tire is fractured or the nail hole is formed by naked eyes.
An outer tire ring: delaminating, deforming and breaking, and judging whether the outer ring of the tire has delaminating, deforming and breaking through naked eyes.
The tire crown is delaminated, cracked and pricked, and whether the tire crown is delaminated, cracked and pricked is judged by naked eyes.
Inside the tire: and (3) breaking, bagging and hollowing, and detecting whether the phenomena of breaking, bagging and hollowing exist in the tire through a laser detector.
S2: and (3) grinding the surface of the tire through a grinding machine, wherein the roughness of the ground surface of the tire reaches a preset range value.
Wherein the ground tread roughness is between RA 6.3.
And S3, inflating the tire body.
Wherein the pressure of the inflation gas is controlled at 6kg/cm2In the meantime.
And S4, placing the tire in an extruder, and driving the tread rubber to be attached to the tread at high pressure by the extruder.
Wherein the temperature of the extruder is controlled to be 130 MPa, and the pressure of the extruder is controlled to be 13 MPa.
S5: and rolling and forming the tire tread by using a rolling device.
Wherein the pressure of the contact surface of the rolling device and the tire is controlled at 20 MPa.
S6: and (5) conveying the molded tire to a drying room for drying.
Wherein, the drying temperature is controlled between 180 ℃.
And S7, putting the bonding agent at the joint of the tire body and the tread rubber, putting the bonding agent into vulcanization equipment, and carrying out high-temperature pressure vulcanization treatment.
Wherein, the adhesive adopts the special instant glue for rubber and plastic.
Wherein the vulcanizing time is controlled to be 3 hours, the vulcanizing temperature is controlled to be 120 ℃, and the pressure of a vulcanizing tank is controlled to be 7KG/cm2Simultaneously controlling the internal pressure of the tire at 6kg/cm2。
S8: the treated tire is verified and trimmed.
Wherein the trimming comprises: cutting materials at a plurality of positions in the tire forming process; the verification comprises the following steps: the detection of whether the tire has a leak or bulge by a laser inspection machine and the detection of the internal pressure of the tire by pressurizing the inside of the tire.
Example 3:
as shown in fig. 1, a tire retreading process includes the steps of:
SI, judging whether the tire meets the retreading standard or not, and cleaning up the qualified tire;
wherein the tire criteria include:
inner tire ring: and (4) fracture and nail hole, and judging whether the inner ring of the tire is fractured or the nail hole is formed by naked eyes.
An outer tire ring: delaminating, deforming and breaking, and judging whether the outer ring of the tire has delaminating, deforming and breaking through naked eyes.
The tire crown is delaminated, cracked and pricked, and whether the tire crown is delaminated, cracked and pricked is judged by naked eyes.
Inside the tire: and (3) breaking, bagging and hollowing, and detecting whether the phenomena of breaking, bagging and hollowing exist in the tire through a laser detector.
S2: and (3) grinding the surface of the tire through a grinding machine, wherein the roughness of the ground surface of the tire reaches a preset range value.
Wherein the buffed tread roughness is between RA 4.
And S3, inflating the tire body.
Wherein the pressure of the inflation gas is controlled at 5kg/cm2In the meantime.
And S4, placing the tire in an extruder, and driving the tread rubber to be attached to the tread at high pressure by the extruder.
Wherein the temperature of the extruder is controlled between 100 MPa, and the pressure of the extruder is controlled between 10 MPa.
S5: and rolling and forming the tire tread by using a rolling device.
Wherein the pressure of the contact surface of the rolling device and the tire is controlled at 10 MPa.
S6: and (5) conveying the molded tire to a drying room for drying.
Wherein, the drying temperature is controlled between 120 ℃.
And S7, putting the bonding agent at the joint of the tire body and the tread rubber, putting the bonding agent into vulcanization equipment, and carrying out high-temperature pressure vulcanization treatment.
Wherein, the adhesive adopts the special instant glue for rubber and plastic.
Wherein the vulcanizing time is controlled to be 2.5 hours, the vulcanizing temperature is controlled to be 100 ℃, and the pressure of a vulcanizing tank is controlled to be 6KG/cm2While the internal pressure of the tire is controlled to be 5kg/cm2。
S8: the treated tire is verified and trimmed.
Wherein the trimming comprises: cutting materials at a plurality of positions in the tire forming process; the verification comprises the following steps: the detection of whether the tire has a leak or bulge by a laser inspection machine and the detection of the internal pressure of the tire by pressurizing the inside of the tire.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Claims (8)
1. A process for retreading a tire comprising the steps of:
the method comprises the following steps: judging whether the tire meets the retreading standard or not, and cleaning up the qualified tire;
step two: polishing the surface of the tire by a polisher, wherein the roughness of the surface of the polished tire reaches a preset range value;
step three: inflating the tire body;
step four: placing the tire in an extruder, and driving the tread rubber to be attached to the tread at high pressure by the extruder;
step five: rolling and molding the tire tread by using rolling equipment;
step six: conveying the formed tire to a drying room for drying;
step seven: putting the bonding agent into the joint of the tire body and the tread rubber, putting the tire body and the tread rubber into vulcanization equipment, and carrying out high-temperature pressure vulcanization treatment;
step eight: the treated tire is verified and trimmed.
2. The tire retreading process as recited in claim 1, wherein the tire criteria in the first step comprises:
inner tire ring: breaking and nailing holes;
an outer tire ring: delamination, deformation, fracture;
delaminating, cracking and pricking the crown;
shoulder: cracking and deformation;
inside the tire: breaking, bagging and emptying.
3. The tire retreading process of claim 1, wherein the ground tread roughness of step two is between RA 3.2-6.3.
4. The tire retreading process as claimed in claim 1, wherein the pressure of the air charged in the third step is controlled to 3.5-6kg/cm2In the meantime.
5. The tire retreading process of claim 1, wherein the temperature of the extruder in step four is controlled to be between 80 and 130 MPa, and the pressure of the extruder is controlled to be between 5 and 13 MPa.
6. The tire retreading process as recited in claim 1, wherein the drying temperature in the sixth step is controlled to be between 100 and 180 degrees.
7. The tire retreading process of claim 1, wherein the vulcanizing time in the seventh step is controlled to be 2-3 hours, the vulcanizing temperature is controlled to be 80-120 degrees, and the pressure of the vulcanizing tank is controlled to be 4-7KG/cm2Simultaneously controlling the internal pressure of the tire to be 3.5-6kg/cm2。
8. The tire retreading process of claim 1, wherein the dressing in the eighth step comprises: cutting materials at a plurality of positions in the tire forming process; the verification comprises the following steps: the detection of whether the tire has a leak or bulge by a laser inspection machine and the detection of the internal pressure of the tire by pressurizing the inside of the tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410657.5A CN113085239A (en) | 2021-04-14 | 2021-04-14 | Tire retreading process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410657.5A CN113085239A (en) | 2021-04-14 | 2021-04-14 | Tire retreading process |
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| Publication Number | Publication Date |
|---|---|
| CN113085239A true CN113085239A (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110410657.5A Pending CN113085239A (en) | 2021-04-14 | 2021-04-14 | Tire retreading process |
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| CN (1) | CN113085239A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670678A (en) * | 2009-09-28 | 2010-03-17 | 扬州市邗江飞达轮胎翻新厂 | Method for recapping tyres of cars |
| CN104339683A (en) * | 2013-08-01 | 2015-02-11 | 邱亚芹 | Novel giant tyre retreading technology |
| CN107839268A (en) * | 2017-12-25 | 2018-03-27 | 郑州万通汽车轮胎股份有限公司 | Carcass culture renovation technology |
| CN110962383A (en) * | 2018-09-30 | 2020-04-07 | 常州力普特轮胎翻新有限公司 | Method for retreading tire and retreaded tire |
-
2021
- 2021-04-14 CN CN202110410657.5A patent/CN113085239A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670678A (en) * | 2009-09-28 | 2010-03-17 | 扬州市邗江飞达轮胎翻新厂 | Method for recapping tyres of cars |
| CN104339683A (en) * | 2013-08-01 | 2015-02-11 | 邱亚芹 | Novel giant tyre retreading technology |
| CN107839268A (en) * | 2017-12-25 | 2018-03-27 | 郑州万通汽车轮胎股份有限公司 | Carcass culture renovation technology |
| CN110962383A (en) * | 2018-09-30 | 2020-04-07 | 常州力普特轮胎翻新有限公司 | Method for retreading tire and retreaded tire |
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Application publication date: 20210709 |