CN113246515B - Baking-free tire winding type semi-finished product direct vulcanization process - Google Patents
Baking-free tire winding type semi-finished product direct vulcanization process Download PDFInfo
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- CN113246515B CN113246515B CN202110717071.3A CN202110717071A CN113246515B CN 113246515 B CN113246515 B CN 113246515B CN 202110717071 A CN202110717071 A CN 202110717071A CN 113246515 B CN113246515 B CN 113246515B
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- 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)
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- 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)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
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- Tyre Moulding (AREA)
Abstract
The invention discloses a baking-free tire winding type semi-finished product direct vulcanization process, which comprises the steps of processing cord fabric required by a tire into an inner layer cord fabric cylinder on a laminating machine, forming the inner layer cord fabric cylinder and two sidewall rubbers on a forming machine to form a tire shell, and winding an extrusion rubber strip on a tire tread winding machine to form a semi-finished product; when the surface temperature of the semi-finished product is 55-70 ℃, the semi-finished product does not need to be dried in a drying room, and is parked for 25-45 min so as to ensure that the rubber material on the surface of the semi-finished product is subjected to sufficient heat flow, the semi-finished product is shaped when the surface temperature of the semi-finished product is not lower than 35 ℃, and the semi-finished product is subjected to mold filling and vulcanization to manufacture a finished product of the tire when the surface temperature of the semi-finished product is not lower than 25 ℃; the invention utilizes the higher temperature of the semi-finished product to lead the rubber material to fully flow, and then directly loads the semi-finished product into the mould of the vulcanizing machine for vulcanization, thereby avoiding the flow of drying the semi-finished product in a drying room and greatly improving the production efficiency.
Description
Technical Field
The invention relates to a manufacturing process for directly vulcanizing a semi-finished product without baking a tire in a drying room, in particular to a baking-free tire winding type semi-finished product direct vulcanizing process, belonging to the technical field of tires.
Background
At present, in the field of tire manufacturing, particularly in oblique tire manufacturing, after rubber parts are assembled into semi-finished products by a forming machine, in order to ensure that internal gasoline is fully volatilized, the thermal fluidity of rubber materials and the operability during shaping are easy, tire drying is carried out in a drying room, the tire drying temperature is 30-35 ℃, and the tire drying time is more than 4 hours, so that the tire drying time is longer, the turnover of the semi-finished products and the vulcanization progress of a subsequent process are affected, the efficiency is lower, and the capacity of supplying goods to customers is seriously affected during production in a busy season.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to improve the production efficiency, reduce the overstock and turnover of semi-finished products, and provide a manufacturing process for directly vulcanizing a semi-finished product of a tire without baking the tire in a drying room, in particular to a baking-free winding type semi-finished product direct vulcanization process.
The invention is realized by the following technical scheme, a baking-free tire winding type semi-finished product direct vulcanization process, firstly processing cord fabric required by a tire into an inner layer cord fabric cylinder on a laminating machine, molding the inner layer cord fabric cylinder and two sidewall rubbers by using a molding machine to form a tire shell, and then winding the tire shell on a tire tread winding machine to form a semi-finished product by winding an extruded rubber strip;
when the surface temperature of the semi-finished product is 55-70 ℃, the blank does not need to be dried in a drying room, and the semi-finished product is parked for 25-45 min so that the rubber material on the surface of the semi-finished product can be subjected to sufficient heat flow; shaping the semi-finished product when the surface temperature of the semi-finished product is not lower than 35 ℃, and filling and vulcanizing the semi-finished product when the surface temperature of the semi-finished product is not lower than 25 ℃ to manufacture a finished tire product;
the extrusion rubber strip is prepared by using a rubber cold feed extruder, wherein the temperature control of the extruder is set as follows: the screw is 45-50 ℃, the plasticizing section is 50-60 ℃, the feeding section is 55-65 ℃, the extruding section is 55-65 ℃, and the machine head is 65-75 ℃;
the winding area of the extrusion rubber strip is arranged between the two sidewall rubbers, and the gap between the extrusion rubber strip and the sidewall rubbers is 0 mm;
the winding angle set on the tire tread winding machine is 55-65 degrees; the gap between the adjacent extrusion rubber strips is 6 mm;
the temperature of the extruded rubber strip is less than or equal to 126 ℃.
The invention relates to a preferable scheme of a baking-free tire winding type semi-finished product direct vulcanization process, which comprises the following steps: the winding angle set by the tire tread winding machine is 60 degrees.
The invention relates to a preferable scheme of a baking-free tire winding type semi-finished product direct vulcanization process, which comprises the following steps: the width of the extrusion rubber strip is 60-90mm, and the thickness is 5-8 mm.
The invention has the beneficial technical effects that: the tire tread of the tire is wound by the extrusion rubber strip without coating gasoline among all parts, the surface temperature of the wound semi-finished product is higher, the rubber material can be fully flowed by utilizing the higher temperature of the semi-finished product (tire body), and the semi-finished product is directly put into a mold in a vulcanizing machine for vulcanization, so that the process flow of baking the tire of the semi-finished product in a baking room is avoided, and the production efficiency is greatly improved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is further illustrated by the following examples.
Example 1
As shown in fig. 1, a baking-free winding type semi-finished product direct vulcanization process,
the cord fabric required by the tire is firstly processed into an inner layer cord fabric tube on a laminating machine, the inner layer cord fabric tube and two sidewall rubbers are molded into a tire shell by a molding machine, and then the tire shell is wound on a tire tread winding machine to form a semi-finished product by an extrusion rubber strip.
When the surface temperature of the semi-finished product is 55-70 ℃, the blank does not need to be dried in a drying room, and the semi-finished product is parked for 25-45 min so that the rubber material on the surface of the semi-finished product can be subjected to sufficient heat flow; and (3) shaping the semi-finished product when the surface temperature of the semi-finished product is not lower than 35 ℃, and filling and vulcanizing the semi-finished product when the surface temperature of the semi-finished product is not lower than 25 ℃ to manufacture a finished tire product.
The extrusion rubber strip is prepared by using a rubber cold feed extruder, wherein the temperature control of the extruder is set as follows: screw 45-50 deg.C, plasticizing segment 50-60 deg.C, feeding segment 55-65 deg.C, extruding segment 55-65 deg.C, and die head 65-75 deg.C.
Wherein, each temperature control setting of extruder: in winter (10 months and 1 day-6 months and 14 days), the screw is 50 ℃, the plasticizing section is 60 ℃, the feeding section is 65 ℃, the extruding section is 65 ℃, and the machine head is 75 ℃.
In summer (15 days in 6 months to 30 days in 9 months), the screw rod is at 45 ℃, the plasticizing section is at 50 ℃, the feeding section is at 55 ℃, the extrusion section is at 55 ℃, and the head is at 65 ℃.
The winding area of the extrusion rubber strip is arranged between the two sidewall rubbers, and the gap between the extrusion rubber strip and the sidewall rubbers is 0 mm;
the winding angle set on the tire tread winding machine is 55-65 degrees; the gap between the adjacent extrusion rubber strips is 6 mm;
the temperature of the extruded rubber strip is less than or equal to 126 ℃.
The winding angle set by the tire tread winding machine is 60 degrees.
The width of the extrusion rubber strip is 60-90mm, and the thickness is 5-8 mm.
The tire produced by the invention is compared with the tire produced by the original process, and the performance is shown in the table 1; the comparison table of the production time required by the tire produced by the invention and the tire produced by the prior art is shown in table 2.
TABLE 1 comparison of the performances of the tires produced according to the invention and the tires produced according to the prior art
TABLE 2 comparison of the production times required for the tires produced according to the invention and the tires produced according to the prior art
Claims (1)
1. The direct vulcanization process of the baking-free tire winding type semi-finished product is characterized by comprising the following steps of:
firstly, processing cord fabric required by a tire into an inner layer cord fabric tube on a laminating machine, molding the inner layer cord fabric tube and two sidewall rubbers by using a molding machine to prepare a tire shell, and then winding the tire shell on a tire tread winding machine to prepare a semi-finished product by winding an extruded rubber strip;
when the surface temperature of the semi-finished product is 55-70 ℃, the blank does not need to be dried in a drying room, and the semi-finished product is parked for 25-45 min so that the rubber material on the surface of the semi-finished product can be subjected to sufficient heat flow; shaping the semi-finished product when the surface temperature of the semi-finished product is not lower than 35 ℃, and filling and vulcanizing the semi-finished product when the surface temperature of the semi-finished product is not lower than 25 ℃ to manufacture a finished tire product;
the extrusion rubber strip is prepared by using a rubber cold feed extruder, wherein the temperature control of the extruder is set as follows: the screw is 45-50 ℃, the plasticizing section is 50-60 ℃, the feeding section is 55-65 ℃, the extruding section is 55-65 ℃, and the machine head is 65-75 ℃;
the winding area of the extrusion rubber strip is arranged between the two sidewall rubbers, and the gap between the extrusion rubber strip and the sidewall rubbers is 0 mm;
the winding angle set on the tire tread winding machine is 55-65 degrees; the gap between the adjacent extrusion rubber strips is 6 mm;
the temperature of the extruded adhesive tape is less than or equal to 126 ℃;
the winding angle set by the tire tread winding machine is 60 degrees;
the width of the extrusion rubber strip is 60-90mm, and the thickness is 5-8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717071.3A CN113246515B (en) | 2021-06-28 | 2021-06-28 | Baking-free tire winding type semi-finished product direct vulcanization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717071.3A CN113246515B (en) | 2021-06-28 | 2021-06-28 | Baking-free tire winding type semi-finished product direct vulcanization process |
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| Publication Number | Publication Date |
|---|---|
| CN113246515A CN113246515A (en) | 2021-08-13 |
| CN113246515B true CN113246515B (en) | 2021-10-08 |
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| CN202110717071.3A Active CN113246515B (en) | 2021-06-28 | 2021-06-28 | Baking-free tire winding type semi-finished product direct vulcanization process |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1189672B (en) * | 1986-05-20 | 1988-02-04 | Firestone Int Dev Spa | METHOD FOR THE HOT PRODUCTION OF TIRES |
| JPH11129344A (en) * | 1997-10-30 | 1999-05-18 | Bridgestone Corp | Manufacturing of pneumatic tire |
| CN103660801B (en) * | 2012-09-17 | 2016-01-20 | 山东玲珑轮胎股份有限公司 | Tire with composite structure tread and manufacturing method thereof |
| CN104553619A (en) * | 2015-01-29 | 2015-04-29 | 双星东风轮胎有限公司 | Semi-steel radial tire blank |
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Address after: 221000 No.1 Xulun Road, Xuzhou Industrial Park, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Xulun Rubber Co.,Ltd. Address before: 221000 No.1 Xulun Road, Xuzhou Industrial Park, Xuzhou City, Jiangsu Province Patentee before: XUZHOU XUGONG TYRES Co.,Ltd. |