CN211710093U - Production system for manufacturing whole annular precured tread of retreaded tire - Google Patents
Production system for manufacturing whole annular precured tread of retreaded tire Download PDFInfo
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- CN211710093U CN211710093U CN201922336502.2U CN201922336502U CN211710093U CN 211710093 U CN211710093 U CN 211710093U CN 201922336502 U CN201922336502 U CN 201922336502U CN 211710093 U CN211710093 U CN 211710093U
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Abstract
The utility model relates to the technical field of tire retreading, in particular to a production system for manufacturing an integral annular precured tread of a retreaded tire; the device comprises an annular tire tread mold and two injection devices, wherein the two injection devices are positioned at symmetrical positions on two sides of the annular tire tread mold; the corresponding positions on two sides of the circumference of the annular tire tread mold are respectively provided with a glue injection hole and a mold fixing rod; the injection device comprises an injection tube and an injection device upper fixing rod, the top end of the injection tube is matched with the shape of the glue injection hole, and the injection device upper fixing rod is fixedly connected with the mold fixing rod; the utility model discloses can ensure injection device's stability, guarantee that injection device and cyclic annular tread mould's relative position can not produce the skew to have synchronous, highly compressed characteristics, improve the physical mechanical properties and the wear resistance of retreaded tire.
Description
Technical Field
The utility model relates to a tire retreading technical field especially relates to a manufacturing system who makes whole cyclic annular prevulcanization tread of retreaded tire.
Background
When the tire is used, the service life of the tire body is far longer than that of the tire tread. In order to improve the utilization of tires, the tire retreading industry has gradually emerged. The current commonly used tyre retreading method is a precuring tyre tread-envelope process, which is characterized in that a polished surface of a tyre crown of an old tyre is coated with mucilage, then a precuring tyre tread with patterns is attached to a tyre body, and then a molded retreaded tyre blank is assembled with an envelope and then enters a vulcanizing tank for low-temperature vulcanization, wherein the retreading process is called cold retreading. The precured tread adopted by the cold-turning method is divided into a strip tread and an annular tread, the annular tread is not provided with a joint, the balance performance of the tire is good, and the tire has certain technical advantages compared with the strip tread.
The truck tire, especially the truck tire, has huge annual consumption and high tire price, and along with the high development of the tire meridional degree, the service life of a tire body taking a steel cord as a framework material is longer and is obviously higher than the tread wear cycle, so the truck tire retreading has very important significance and wide development prospect.
For retreading of truck and passenger car tires, strip-shaped precured treads are still commonly adopted in the industry, and although technical development is carried out by many enterprises on annular treads, most of the tread production technologies adopt that rubber strips are put into an annular tread mold, and the annular tread mold is locked and vulcanized by utilizing radial expansion or radial contraction of a segmented block mold. The method for producing the annular tire tread has obvious defects that firstly, most rubber filling is manually operated, although the rubber filling weight can be controlled, the rubber filling weight is extremely unevenly distributed in the initial stage of a mold, and the rubber shortage and the like are easy to occur after vulcanizationA defect; secondly, no matter whether the mold adopts an inner loose joint or an outer loose joint, the mold clamping force after filling the rubber is radial expansion or contraction force, the force value is small, and the pressure value to the rubber is low in the vulcanization process and is generally only 5-15kgf/cm2The rubber vulcanized under the pressure has the physical and mechanical properties, wear resistance and the like which are difficult to reach the optimal values, so the quality level and the service life of the annular tread are lower than those of a strip tread, and the popularization and the application of the annular tread are restricted.
In order to overcome the defects, the Qingdao university of science and technology submits the Chinese patent application with the application number of 201410158158.1, discloses a tire retreading method and vulcanizing equipment for realizing the retreading method, and the tire retreading method comprises the steps of tire body inspection, tire body polishing and vulcanizing, and comprises the following specific steps: polishing the checked tire body, putting the polished tire body into vulcanizing equipment, inflating and closing the mold, injecting a rubber material into a gap between the inner wall of the vulcanizing mold and the tire tread through an injection device, filling the rubber material in a mold cavity, and vulcanizing; also included is the step of mixing the size with the reinforcing agent in an injection apparatus. The application discloses tire curing equipment includes heating device, vulcanizes cavity, controlling means, goes up mould and lower mould, and the lower mould sets up in vulcanizing the cavity, goes up the mould and passes through strutting arrangement and connect on vulcanizing the equipment to cooperate with the lower mould, go up mould and lower mould circumference and all open the hole of being connected with the device of injection. Compared with the prior art, the technical scheme has the advantages that the rubber cement does not need to be coated, the environment is protected, the rubber cement, gasoline and manpower are saved, the production efficiency is improved, the labor condition is improved, the rubber cement is beneficial to the health of workers, the influence of less or more rubber materials on tires is avoided, and the product quality is improved. However, in the technology, the upper die and the lower die are both provided with connecting holes connected with the injection devices, if all the connecting holes are utilized, the operation of injecting the rubber material can be completed only by the cooperation of a plurality of injection devices, so that the operation difficulty is high, the energy consumption is excessive, and the resources are seriously wasted.
The applicant obtains the Chinese patent with the patent number of 201310419291.3 and discloses a method for manufacturing a full circle pre-vulcanized tread of a giant tire for mining by a spiral pushing method, which adopts the technical scheme that a cold feeding screw extruder is adopted to push rubber into a mold through a rubber inlet of the mold, the mold is filled with the rubber through continuous spiral pushing force, higher pressure is applied to the rubber through pulse, the rubber is more compact, and the physical mechanical property and the wear resistance of the vulcanized tread are improved. However, the rubber inlet of the technology is arranged above the upper die and the outer die, and therefore when the extruder pushes rubber into the die, the rubber needs to pass through a corner of a pipeline, so that smooth proceeding and continuity of pushing the rubber are not facilitated, and the efficiency of rubber pushing operation is reduced.
In order to overcome the defects, the applicant obtains a Chinese utility model patent with the patent number of 201420853523.6 and discloses a tread vulcanizing system; comprises a vulcanizing device and an injection device; the injection device comprises two injection machines and a longitudinal movement mechanism, wherein the longitudinal movement mechanism comprises two parallel longitudinal rails, and the two injection machines are respectively arranged at corresponding positions on the two longitudinal rails; the vulcanizing device comprises a plurality of vulcanizing machines which are arranged between two parallel longitudinal rails side by side, each vulcanizing machine is internally provided with an annular tire tread mold, and the two injection machines sequentially inject annular tire tread rubber into the annular tire tread mold by moving on the longitudinal rails; the form that two injection machines supply a plurality of vulcanizing machines is arranged, so that the utilization rate and the production efficiency of equipment are effectively improved. However, when the injection machine injects rubber into the annular tread mold in the technology, the annular tread mold can generate reaction force to the injection machine, so that the injection machine loses stability, and generates deviation on a track, thereby ensuring that two injection machines can not complete rubber injection operation uniformly and synchronously, and affecting the performance of vulcanized rubber.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned problem that exists among the prior art, the utility model aims at providing a production system for manufacturing the whole cyclic annular prevulcanization tread of retreaded tire makes it can ensure the stability of injecting rubber operation to have synchronous, highly compressed characteristics, improve the physical and mechanical properties and the wear resistance of retreaded tire.
In order to achieve the above purpose, the technical scheme of the utility model is that: a production system for manufacturing an integral annular precured tread of a retreaded tire comprises an annular tread mold and two injection devices, wherein the two injection devices are positioned at symmetrical positions on two sides of the annular tread mold; the corresponding positions on two sides of the circumference of the annular tire tread mold are respectively provided with a glue injection hole and a mold fixing rod; the injection device comprises an injection tube and an upper fixing rod of the injection device, the top end of the injection tube is matched with the shape of the glue injection hole, and the upper fixing rod of the injection device is fixedly connected with the fixing rod of the mold.
Optimally, the shape of the glue injection hole is a cone with a small inside and a large outside, correspondingly, the shape of the top end of the injection tube is a cone with a small outside and a large inside, and the two cones are tightly attached.
Preferably, the mold fixing rod is positioned right above the glue injection hole.
Preferably, the annular tread mold is fixed on a vulcanizing machine, a vulcanizing machine fixing rod is respectively arranged at corresponding positions of two sides of the lower portion of the vulcanizing machine, the injection device comprises an injection device lower fixing rod located at the lower portion, and the injection device lower fixing rod is fixedly connected with the vulcanizing machine fixing rod.
Optimally, the lower fixing rod of the injection device is positioned right below the glue injection hole.
Preferably, the injection device further comprises a feeding machine, a glue containing cavity and a pressure pump, wherein the glue containing cavity is connected with the injection tube, the feeding machine and the pressure pump respectively.
Optimally, the glue containing cavity and the center of the injection tube are positioned at the same horizontal and vertical positions; the sectional area of the glue containing cavity along the vertical direction is larger than that of the injection tube along the vertical direction.
Optimally, the rubber capacity of the annular tread mold is 10-20 liters, the volume of the rubber containing cavity is 15 liters, and the pressure of the injected rubber generated by the pressure pump is 10-25 MPa.
Optimally, through holes are arranged on an upper fixing rod of the injection device, a mould fixing rod, a lower fixing rod of the injection device and a fixing rod of the vulcanizing machine; the upper fixing rod of the injection device is sleeved outside the fixing rod of the mold, the lower fixing rod of the injection device is sleeved outside the fixing rod of the vulcanizing machine, and the through holes are aligned and fixed through pins penetrating through the through holes respectively.
The corresponding positions on the two sides of the circumference of the annular tire tread mold mean that the connecting line of the two corresponding positions is a diameter passing through the center of the annular tire tread mold; the corresponding positions on the two sides of the lower part of the vulcanizing machine mean that the connecting line of the two corresponding positions is a diameter passing through the center of the plane of the lower part of the vulcanizing machine.
The glue injection hole is in the shape of a cone with a small inside and a large outside, wherein the inside is the direction close to the inside of the annular mould, and the outside is the direction far away from the inside of the annular mould; the shape of the tip of the syringe is a cone with a small outside and a large inside, where inside refers to the direction towards the body of the injection device and outside refers to the direction away from the body of the injection device.
The utility model provides a manufacturing system who makes the whole cyclic annular prevulcanization tread of retreaded tire's working method does:
firstly, two injection devices are arranged at the symmetrical positions of the two sides of the annular tire tread mold, the top end of an injection tube is tightly attached to an injection hole, an upper fixing rod of the injection device is fixedly connected with a mold fixing rod, and a lower fixing rod of the injection device is fixedly connected with a vulcanizing machine fixing rod.
Calculating the volume of the precured tread to be prepared, starting feeding machines of two injection devices, and respectively filling rubber with half volume of the precured tread into two rubber containing cavities; setting the pressure of the two pressure pumps, starting the two pressure pumps simultaneously, and injecting the rubber in the rubber containing cavity into the mold in a high-pressure, rapid, synchronous and stable manner; and (5) after the injection is finished, starting a vulcanizing control system of the vulcanizing machine to carry out vulcanization.
The beneficial effects of the utility model reside in that:
1. through injection apparatus last dead lever and mould dead lever fixed connection, be fixed in the symmetric position of cyclic annular tread mould both sides respectively with two injection apparatus, when injecting rubber in to cyclic annular tread mould, can ensure injection apparatus's stability, guarantee that injection apparatus and cyclic annular tread mould's relative position can not produce the skew to have synchronous, highly compressed characteristics, improve the physical mechanical properties and the wear resistance of retreaded tire.
2. The shape of the glue injection hole and the top end of the injection tube are both arranged into a cone shape which is matched with each other, so that the positions of the two parts are gradually adjusted in the process of fixedly connecting the injection device and the annular tire tread mold, finally, the two cones are tightly attached, the coincidence of the vertex of the cone of the glue injection hole and the vertex of the cone at the top end of the injection tube is ensured, and the smooth one-time injection of the rubber under high pressure is ensured.
3. Through injection apparatus lower dead lever and vulcanizer dead lever fixed connection, further improved the fixity that injection apparatus and annular tread mould are connected, improved the stability of injecting glue process, further improved the physical and mechanical properties and the wear resistance of retreaded tire.
4. The injection device lower fixing rod and the mold fixing rod are respectively arranged right below and above the injection hole, so that the injection device and the annular tire tread mold can be conveniently adjusted, and finally the injection hole is tightly attached to the top end of the injection tube.
5. The utility model discloses an establish and put into the material machine, hold gluey chamber and force pump, can realize earlier respectively to two hold gluey intracavity fill into the rubber of the half volume of precuring tread, then set for the pressure of two force pumps, start two force pumps simultaneously, will hold the operation that the rubber high pressure in the gluey intracavity, quick, synchronous, the stable injection was injected into the mould, can guarantee synchronism, the pressure uniformity of injecting glue process.
6. The glue containing cavity and the center of the injection tube are positioned at the same horizontal position and the vertical position, so that the continuity, the continuity and the smoothness of the glue injection process are ensured.
7. The sectional area of the rubber containing cavity in the vertical direction is larger than that of the injection pipe in the vertical direction, so that the rubber containing cavity is short and thick, the injection pipe is long and thin, and the pressure born by the rubber is larger and larger along with the propulsion from the rubber containing cavity, the injection pipe, the top end cone of the injection pipe and finally the annular tread mold in the process of injecting the rubber from the rubber containing cavity into the mold, so that the vulcanization pressure is improved.
8. The rubber capacity of the annular tire tread mold is 10-20 liters, the maximum capacity of the rubber containing cavity is 15 liters, and the two injection devices are 30 liters in total, so that the requirement of the annular precured tire tread of a truck can be met, and the rubber can be injected smoothly at one time.
9. The pressure of the injected rubber generated by the pressure pump is 10-25MPa, after the step of injecting the rubber is completed, high pressure is always kept in the annular rubber mold in the vulcanization process, namely the pressure in the vulcanization process, the physical and mechanical properties and the wear resistance of the rubber vulcanized under the pressure are all superior to those of the annular pre-vulcanized tread in the prior art, and the quality level and the service life of the rubber vulcanized under the pressure are higher than those of a strip tread, so that the popularization and the application of the annular tread are facilitated.
Drawings
FIG. 1 is a schematic view of a system for producing an annular precured tread according to the present invention;
FIG. 2 is a schematic view of the annular tread mold provided by the present invention;
fig. 3 is a schematic view of an injection device provided by the present invention;
1. an annular tread mold; 2. an injection device; 3. injecting glue holes; 4. a mold fixing rod; 5. an injection tube; 6. an injection device upper fixing rod; 7. a vulcanizer; 8. a vulcanizer fixing rod; 9. a lower fixing rod of the injection device; 10. feeding a material machine; 11. a glue containing cavity; 12. a pressure pump; 13. and a pin.
Detailed Description
The present invention will be described in more detail with reference to the following embodiments.
The technical scheme of the embodiment is as follows: a production system for manufacturing an integral annular precured tread of a retreaded tire comprises an annular tread mold and two injection devices, wherein the two injection devices are positioned at symmetrical positions on two sides of the annular tread mold; the corresponding positions on two sides of the circumference of the annular tire tread mold are respectively provided with a glue injection hole and a mold fixing rod; the injection device comprises an injection tube and an upper fixing rod of the injection device, the top end of the injection tube is matched with the shape of the glue injection hole, and the upper fixing rod of the injection device is fixedly connected with the fixing rod of the mold.
The shape of the glue injection hole is a cone with a small inside and a large outside, correspondingly, the shape of the top end of the injection tube is a cone with a small outside and a large inside, and the two cones are tightly attached.
Wherein, the mould dead lever is located the direct top in notes gluey hole.
The annular tire tread mold is fixed on a vulcanizing machine, a vulcanizing machine fixing rod is arranged at the corresponding positions of two sides of the lower portion of the vulcanizing machine respectively, the injection device comprises an injection device lower fixing rod located at the lower portion, and the injection device lower fixing rod is fixedly connected with the vulcanizing machine fixing rod.
Wherein, injection device lower dead lever is located the direct lower side in annotating the gluey hole.
The injection device further comprises a feeding machine, a glue containing cavity and a pressure pump, wherein the glue containing cavity is connected with the injection tube, the feeding machine and the pressure pump respectively.
Wherein, the glue containing cavity and the center of the injection tube are positioned at the same horizontal and vertical positions; the sectional area of the glue containing cavity along the vertical direction is larger than that of the injection tube along the vertical direction.
Wherein, the rubber capacity of the annular tread mold is 10-20 liters, the capacity of the rubber containing cavity is 15 liters, and the pressure of the injected rubber generated by the pressure pump is 10-25 MPa.
Through holes are formed in an injection device upper fixing rod, the outer part of a mold fixing rod, an injection device lower fixing rod and a vulcanizing machine fixing rod; the upper fixing rod of the injection device is sleeved outside the fixing rod of the mold, the lower fixing rod of the injection device is sleeved outside the fixing rod of the vulcanizing machine, and the through holes are aligned and fixed through pins penetrating through the through holes respectively.
When the rubber capacity of the annular tire tread mold is 15 liters, the volume of the rubber injected into each rubber containing cavity is 7.5 liters, and the pressure of the injected rubber generated by a pressure pump is 18MPa, the rubber pushing time is 10s, the compactness of the vulcanized rubber is good, and the wear resistance is improved by 20-30%.
Claims (9)
1. A production system for manufacturing an integral annular precured tread of a retreaded tire, characterized in that: the device comprises an annular tire tread mold and two injection devices, wherein the two injection devices are positioned at symmetrical positions on two sides of the annular tire tread mold; the corresponding positions on two sides of the circumference of the annular tire tread mold are respectively provided with a glue injection hole and a mold fixing rod; the injection device comprises an injection tube and an upper fixing rod of the injection device, the top end of the injection tube is matched with the shape of the glue injection hole, and the upper fixing rod of the injection device is fixedly connected with the fixing rod of the mold.
2. The production system according to claim 1, wherein: the shape of the glue injection hole is a cone with a small inside and a large outside, correspondingly, the shape of the top end of the injection tube is a cone with a small outside and a large inside, and the two cones are tightly attached.
3. The production system according to claim 2, wherein: the mould dead lever is located the direct top in notes gluey hole.
4. The production system according to any one of claims 1 to 3, wherein: the annular tire tread mold is fixed on a vulcanizing machine, a vulcanizing machine fixing rod is respectively arranged at corresponding positions of two sides of the lower part of the vulcanizing machine, the injection device comprises an injection device lower fixing rod positioned at the lower part, and the injection device lower fixing rod is fixedly connected with the vulcanizing machine fixing rod.
5. The production system according to claim 4, wherein: the lower fixing rod of the injection device is positioned right below the glue injection hole.
6. The production system according to claim 5, wherein: the injection device further comprises a feeding machine, a glue containing cavity and a pressure pump, wherein the glue containing cavity is connected with the injection pipe, the feeding machine and the pressure pump respectively.
7. The production system according to claim 6, wherein: the glue containing cavity and the center of the injection tube are positioned at the same horizontal and vertical positions; the sectional area of the glue containing cavity along the vertical direction is larger than that of the injection tube along the vertical direction.
8. The production system according to claim 7, wherein: the rubber capacity of the annular tire tread mold is 10-20 liters, the capacity of the rubber containing cavity is 15 liters, and the pressure of the injected rubber generated by the pressure pump is 10-25 MPa.
9. The production system according to any one of claims 5 to 8, wherein: through holes are formed in the injection device upper fixing rod, the mold fixing rod, the injection device lower fixing rod and the vulcanizing machine fixing rod; the upper fixing rod of the injection device is sleeved outside the fixing rod of the mold, the lower fixing rod of the injection device is sleeved outside the fixing rod of the vulcanizing machine, and the through holes are aligned and fixed through pins penetrating through the through holes respectively.
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| CN201922336502.2U CN211710093U (en) | 2019-12-24 | 2019-12-24 | Production system for manufacturing whole annular precured tread of retreaded tire |
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| CN201922336502.2U CN211710093U (en) | 2019-12-24 | 2019-12-24 | Production system for manufacturing whole annular precured tread of retreaded tire |
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| CN211710093U true CN211710093U (en) | 2020-10-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114834075A (en) * | 2022-04-25 | 2022-08-02 | 曲周县胎州轮轮胎翻新有限公司 | Production process of all-steel radial tire annular retreaded tread |
-
2019
- 2019-12-24 CN CN201922336502.2U patent/CN211710093U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114834075A (en) * | 2022-04-25 | 2022-08-02 | 曲周县胎州轮轮胎翻新有限公司 | Production process of all-steel radial tire annular retreaded tread |
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