CN113829803A

CN113829803A - Co-extruded self-repairing tire and production process thereof

Info

Publication number: CN113829803A
Application number: CN202111093557.0A
Authority: CN
Inventors: 郝纯涛; 彭世明
Original assignee: Nantong Shunchi Rubber Product Co ltd
Current assignee: Nantong Shunchi Rubber Product Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2021-12-24

Abstract

The invention discloses a co-extruded self-repairing tyre and a production process thereof, which comprises a tyre body layer, an inner tyre layer, a butyl rubber inner tyre, an outer tyre layer and a tread layer, wherein the inner tyre layer is fixedly arranged on the inner wall of the tyre body layer, the butyl rubber inner tyre is fixedly arranged in the middle position of the outer wall of the tyre body layer, the outer tyre layer is fixedly arranged on one side of the butyl rubber inner tyre, and the tread layer is fixedly arranged on one side of the outer tyre layer. Increasing the service life of the tire.

Description

Co-extruded self-repairing tire and production process thereof

Technical Field

The invention relates to the field of co-extrusion self-repairing tires, in particular to a co-extrusion self-repairing tire and a production process thereof.

Background

A tire is a ground-rolling circular ring-shaped elastic rubber article mounted on various vehicles or machines. Generally mounted on a metal rim, and is capable of supporting a vehicle body, buffering external impact, achieving contact with a road surface and ensuring the driving performance of a vehicle. Tires are often used under complex and severe conditions, which are subjected to various deformations, loads, forces and high and low temperature effects during running, and therefore must have high load-bearing, traction and cushioning properties. At the same time, high abrasion resistance and flexibility resistance, and low rolling resistance and heat build-up are also required.

In the prior art, the abrasion of the tire is usually large, the tire used on a stone road for a long time is easy to be punctured by a sharp object, the service life of the tire is short, the tire repairing and replacing frequency is high, the use efficiency and the practicability of the tire are reduced, and therefore the co-extrusion self-repairing tire is needed.

Disclosure of Invention

The invention aims to provide a co-extrusion self-repairing tire and a production process thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a crowded tire from mending altogether and production technology thereof, includes carcass layer, inner tube layer, butyl rubber inner tube of a tyre, outer tube layer and tread layer, the fixed inner tube layer that is equipped with in inner wall on carcass layer, the fixed butyl rubber inner tube of a tyre that is equipped with of intermediate position of carcass layer outer wall, the fixed outer tube layer that is equipped with in one side of butyl rubber inner tube, the fixed tread layer that is equipped with in one side of outer tube layer, the both ends of carcass layer one side are all fixed and are equipped with belted layer, two the intermediate position of belted layer all alternates and is equipped with the meridian, two the outer wall of meridian is fixed and is equipped with the rubber layer, two the one end on rubber layer respectively with the both sides fixed connection of outer tube layer.

Preferably, the four corners of the inner wall of the carcass layer are fixedly provided with positioning seats, eight positioning seats are fixedly provided with positioning rings at one ends, one ends of the eight positioning seats are fixedly connected with the four corners of the two sides of the positioning rings respectively, and the two ends of the inner wall of the positioning rings are fixedly provided with buffer rings.

Preferably, four corners of the positioning ring outer wall are all alternated to be provided with a first positioning rod, four the one end of the first positioning rod outer wall is all alternated to be provided with a first spring, four the one end of the first positioning rod is all fixedly provided with a support ring, and the one end of the four first positioning rods is respectively fixedly connected with four corners of the support ring inner wall, four the other end of the first positioning rod is all fixedly provided with a first limit block.

Preferably, a protective layer is fixedly arranged at one end of the outer wall of the rubber layer.

Preferably, the fixed air inlet that is equipped with of one end on rubber layer, the intermediate position of air inlet outer wall rotates and is equipped with the fixing base, the both ends of fixing base one side all alternate and are equipped with the second locating lever, two the one end of second locating lever outer wall all alternates and is equipped with the second spring, two the one end of second locating lever all is fixed and is equipped with the positioning disk, and the one end of two second locating levers respectively with the both ends fixed connection of positioning disk one side, two the other end of second locating lever all is fixed and is equipped with the second stopper.

Preferably, the fixed disk that is equipped with of one end of air inlet outer wall, the constant head tank has all been seted up at the both ends of fixed disk one side, two the outer wall of second stopper alternates the contact with the one end of two constant head tanks respectively.

Preferably, a fixing groove is formed in the middle of one side of the positioning plate.

A co-extrusion self-repairing tire production process comprises the following steps:

step one, installing a plurality of feed inlets on an extruder, adding a self-repairing butyl rubber material into one feed inlet, starting the extruder, extruding a butyl rubber inner tube semi-finished product component containing butyl rubber by starting the extruder, and sequentially adding tire materials to extrude a carcass layer, an inner carcass layer, an outer carcass layer, a tread layer, a belt layer and a rubber layer;

laying a thin synthetic rubber inner tire layer on a drum, laying a tire body layer at the top end of the synthetic rubber inner tire layer, laying belt layers at two ends of one side of the tire body layer, sleeving meridians at the middle positions of the tops of the two belt layers, and laying rubber layers at two ends of the top of the tire body layer;

step three, extruding a cylinder on the drum, compressing the long cylinder to obtain a semi-finished product of the tire, and installing and paving a tread layer on the surface of the tire;

putting the semi-finished tire into a vulcanization mold, and extruding rubber into the mold by a vulcanization liner filled with high-pressure hot water so as to form the tire tread of the semi-finished tire and precisely combine the rubber and the steel wire fiber bundles together through vulcanization reaction;

and step five, performing visual appearance inspection on the tire finished product, and then performing uniformity detection, wherein the uniformity detection is completed through a uniformity testing machine, the uniformity testing machine mainly measures the radial force, the lateral force, the cone force and the fluctuation condition, a dynamic balance test is performed after the uniformity detection is completed, and the dynamic balance test is completed on the dynamic balance testing machine.

The invention has the technical effects and advantages that:

(1) the method comprises the following steps of extruding a butyl rubber inner tube semi-finished product component containing butyl rubber through an extruder, sequentially adding tire materials to extrude a tire body layer, an inner tire layer, an outer tire layer, a tread layer, a belt ply and a rubber layer, uniformly laying the semi-finished product, extruding a drum upper cylinder, compressing a long cylinder to obtain a tire semi-finished product, putting the tire of the semi-finished product into a vulcanization mold, extruding rubber into the mold through a vulcanization liner filled with high-pressure hot water, and precisely combining the rubber and a steel wire fiber bundle and the like to generate vulcanization reaction, so that a butyl rubber inner tire layer with an automatic repairing function is arranged on the inner wall of the tire, the automatic repairing function is realized when the tire is punctured, the practicability of the tire body is improved, and the service life of the tire is prolonged;

(2) the positioning seat fixedly arranged on the inner wall of the tire body layer is adhered to the positioning ring, when the tire body layer is extruded to be close to the supporting ring, the supporting ring is connected with one side of the positioning ring in an inserting mode through the first positioning rod fixed on one side, and the supporting ring plays a supporting role on the inner wall of the tire body layer through elastic deformation of the first spring and fixation of the first limiting block, so that the tire body layer and the tire body are protected, the stability of the tire body is improved, the tire plays a protecting role under the condition of low air pressure and the like, and the working efficiency of the tire is improved;

(3) rotate the positioning disk through detaining the fixed slot, make the positioning disk drive the second locating lever that one side both ends are fixed and rotate, drive the fixing base and rotate along the outer wall of air inlet when the second locating lever pivoted, when two second stoppers rotate the great end of constant head tank, elastic deformation through two second springs makes the second stopper, second locating lever and positioning disk outwards pop out, make the positioning disk separate with the one end of air inlet, also inwards contract simultaneously, increase the guard action of tire body air inlet, reduce hidden danger such as air inlet receives wearing and tearing.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the tire structure of the present invention;

FIG. 3 is a schematic view of a support structure according to the present invention;

fig. 4 is a schematic view of the protection structure of the present invention.

In the figure: 1. a carcass layer; 2. positioning seats; 3. a positioning ring; 4. an air inlet; 5. an inner tube layer; 6. a butyl rubber inner tube; 7. an outer tire layer; 8. a tread layer; 9. a belt ply; 10. a meridian; 11. a rubber layer; 12. a protective layer; 13. a buffer ring; 14. a first positioning rod; 15. a first spring; 16. a support ring; 17. a first stopper; 18. a fixed seat; 19. fixing the disc; 20. positioning a groove; 21. a second positioning rod; 22. a second spring; 23. a second limiting block; 24. positioning a plate; 25. and fixing the grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a co-extrusion self-repairing tire and a production process thereof as shown in figures 1-4, the co-extrusion self-repairing tire comprises a tire body layer 1, an inner tire layer 5, a butyl rubber inner tube 6, an outer tire layer 7 and a tread layer 8, wherein the inner wall of the tire body layer 1 is fixedly provided with the inner tire layer 5, the middle position of the outer wall of the tire body layer 1 is fixedly provided with the butyl rubber inner tube 6, one side of the butyl rubber inner tube 6 is fixedly provided with the outer tire layer 7, one side of the outer tire layer 7 is fixedly provided with the tread layer 8, both ends of one side of the tire body layer 1 are fixedly provided with belt layers 9, the middle positions of the two belt layers 9 are respectively inserted with meridians 10, the outer walls of the two meridians 10 are fixedly provided with rubber layers 11, one ends of the two rubber layers 11 are respectively fixedly connected with both sides of the outer tire layer 7, and one end of the outer wall of the rubber layer 11 is fixedly provided with a protective layer 12;

the invention provides a co-extrusion self-repairing tire and a production process thereof as shown in figure 3, wherein four corners at two sides of the inner wall of a tire body layer 1 are all fixedly provided with positioning seats 2, one end of each of eight positioning seats 2 is all fixedly provided with a positioning ring 3, one end of each of eight positioning seats 2 is respectively fixedly connected with four corners at two sides of the positioning ring 3, two ends of the inner wall of the positioning ring 3 are all fixedly provided with buffer rings 13, four corners of the outer wall of the positioning ring 3 are all penetrated with first positioning rods 14, one end of the outer wall of each of four first positioning rods 14 is all penetrated with a first spring 15, one end of each of four first positioning rods 14 is all fixedly provided with a support ring 16, one end of each of four first positioning rods 14 is respectively fixedly connected with four corners of the inner wall of the support ring 16, the other end of each of four first positioning rods 14 is all fixedly provided with a first limit block 17, one end of each of the positioning ring 3, each support ring 16 and each buffer ring 13 is provided with a gap, so that the positioning ring 3, the supporting ring 16 and the buffer ring 13 are conveniently clamped into the central shaft of the tire;

the invention provides a co-extrusion self-repairing tire and a production process thereof as shown in figure 4, wherein one end of a rubber layer 11 is fixedly provided with an air inlet 4, the middle position of the outer wall of the air inlet 4 is rotatably provided with a fixed seat 18, two ends of one side of the fixed seat 18 are respectively and alternately provided with a second positioning rod 21, one end of the outer wall of each of the two second positioning rods 21 is respectively and alternately provided with a second spring 22, one end of each of the two second positioning rods 21 is respectively and fixedly provided with a positioning disc 24, and the one end of two second locating levers 21 respectively with the both ends fixed connection of positioning disk 24 one side, the other end of two second locating levers 21 all is fixed and is equipped with second stopper 23, the fixed disk 19 that is equipped with of the one end of 4 outer walls of air inlet, constant head tank 20 has all been seted up at the both ends of fixed disk 19 one side, the outer wall of two second stoppers 23 respectively with the one end alternate contact of two constant head tanks 20, fixed slot 25 has been seted up to the intermediate position of positioning disk 24 one side.

step one, installing a plurality of feed inlets on an extruder, adding a self-repairing butyl rubber material into one feed inlet, starting the extruder, thereby extruding a butyl rubber inner tube 6 semi-finished product component containing butyl rubber, and sequentially adding a tire material to extrude a carcass layer 1, an inner tube layer 5, an outer tire layer 7, a tread layer 8, a belt layer 9 and a rubber layer 11;

secondly, laying a thin synthetic rubber inner tire layer 5 on a drum, laying a tire body layer 1 on the top end of the synthetic rubber inner tire layer 5, laying belt layers 9 at two ends of one side of the tire body layer 1, sleeving meridians 10 at the middle positions of the tops of the two belt layers 9, and laying rubber layers 11 at two ends of the top of the tire body layer 1;

step three, extruding a cylinder on the drum, compressing the long cylinder to obtain a semi-finished product of the tire, and installing and paving a tread layer 8 on the surface of the tire;

The working principle of the invention is as follows: installing a plurality of feed inlets on an extruder, adding a self-repairing butyl rubber material into one feed inlet, using the other feed inlets as the materials of a common tire, starting the extruder to extrude a butyl rubber inner tube 6 semi-finished product component containing butyl rubber, sequentially adding tire materials to extrude a tire body layer 1, an inner tube layer 5, an outer tire layer 7, a tread layer 8, a belt ply layer 9 and a rubber layer 11, laying a thin synthetic rubber inner tube layer 5 on a drum, laying the tire body layer 1 on the top of the synthetic rubber inner tube layer 5, laying the belt ply layer 9 on two ends of one side of the tire body layer 1, sleeving a meridian 10 on the middle position of the tops of the two belt ply layers 9, laying the rubber layer 11 on two ends of the top of the tire body layer 1, extruding a cylinder on the drum, compressing the long cylinder to obtain a tire semi-finished product, installing the tread layer 8 on the surface of the tire, putting a semi-finished tire into a vulcanization mold, extruding rubber into the mold by a vulcanization bladder filled with high-pressure hot water to form the tire grain of the semi-finished tire, and precisely combining the rubber with a steel wire fiber bundle and the like through vulcanization reaction, carrying out visual appearance inspection on the tire finished product, then carrying out uniformity detection, wherein the uniformity detection is completed by a uniformity tester, the uniformity tester mainly measures the radial force, the lateral force, the conical force and the fluctuation condition, a dynamic balance test is carried out after the uniformity detection is completed, the dynamic balance test is completed on the dynamic balance tester, a positioning ring 3 is fixedly glued on the inner wall of a tire body layer 1 through a positioning seat 2, when the tire body layer 1 is extruded to be close to a support ring 16, the support ring 16 is connected with one side of the positioning ring 3 in an inserting way through a first positioning rod 14 fixed on one side, and is fixed through the elastic deformation of a first spring 15 and a first limiting block 17, so that the support ring 16 acts as a support on the inner wall of the carcass layer 1, protecting the carcass layer 1 and the tyre body, when the interior of the tire needs to be inflated, the fixing groove 25 is buckled to rotate the positioning disc 24, so that the positioning disc 24 drives the second positioning rod 21 fixed at two ends of one side to rotate, the second positioning rod 21 drives the fixing seat 18 to rotate along the outer wall of the air inlet 4 while rotating, so that the two second limiting blocks 23 fixed at one end of the second positioning rod 21 rotate simultaneously, when the two second limit blocks 23 rotate to the larger end of the positioning slot 20, the second limit blocks 23, the second positioning rods 21 and the positioning disc 24 are ejected outwards through the elastic deformation of the two second springs 22, so that the positioning disc 24 is separated from one end of the air inlet 4, which is convenient for inflating the inner wall of the tire, and the inward contraction of the positioning disc 24 is also convenient for protecting the outer wall of the air inlet 4 after inflation.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used by the invention can be purchased from the market, and the special-shaped parts can be customized according to the description and the description of the attached drawings.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A co-extruded self-repairing tire comprises a tire body layer (1), an inner tire layer (5), a butyl rubber inner tire (6), an outer tire layer (7) and a tread layer (8), it is characterized in that the inner wall of the carcass layer (1) is fixedly provided with an inner carcass layer (5), a butyl rubber inner tube (6) is fixedly arranged in the middle of the outer wall of the carcass layer (1), an outer tire layer (7) is fixedly arranged on one side of the butyl rubber inner tube (6), a tread layer (8) is fixedly arranged on one side of the outer tire layer (7), the tyre is characterized in that belt layers (9) are fixedly arranged at two ends of one side of the tyre body layer (1), meridians (10) are inserted into the middle positions of the belt layers (9), rubber layers (11) are fixedly arranged on the outer walls of the meridians (10), and one ends of the rubber layers (11) are fixedly connected with two sides of the outer tyre layer (7) respectively.

2. The co-extrusion self-repairing tire according to claim 1, wherein the positioning seats (2) are fixedly arranged at four corners of two sides of the inner wall of the tire body layer (1), the positioning ring (3) is fixedly arranged at one end of each of the eight positioning seats (2), one end of each of the eight positioning seats (2) is fixedly connected with the four corners of the two sides of the positioning ring (3), and the buffer rings (13) are fixedly arranged at two ends of the inner wall of the positioning ring (3).

3. The co-extrusion self-repairing tire according to claim 2, wherein four corners of the outer wall of the positioning ring (3) are respectively provided with a first positioning rod (14) in an inserting manner, one end of the outer wall of the four first positioning rods (14) is respectively provided with a first spring (15) in an inserting manner, one end of each of the four first positioning rods (14) is respectively and fixedly provided with a support ring (16), one end of each of the four first positioning rods (14) is respectively and fixedly connected with the four corners of the inner wall of the support ring (16), and the other end of each of the four first positioning rods (14) is respectively and fixedly provided with a first limiting block (17).

4. A co-extruded self-repairing tyre according to claim 1, wherein a protective layer (12) is fixed to one end of the outer wall of said rubber layer (11).

5. The co-extrusion self-repairing tire according to claim 1, wherein an air inlet (4) is fixedly arranged at one end of the rubber layer (11), a fixing seat (18) is rotatably arranged at the middle position of the outer wall of the air inlet (4), second positioning rods (21) are respectively inserted into the two ends of one side of the fixing seat (18), second springs (22) are respectively inserted into the one ends of the outer wall of the second positioning rods (21), a positioning disc (24) is respectively fixedly arranged at one ends of the two second positioning rods (21), one ends of the two second positioning rods (21) are respectively fixedly connected with the two ends of one side of the positioning disc (24), and a second limiting block (23) is respectively fixedly arranged at the other ends of the two second positioning rods (21).

6. The co-extrusion self-repairing tire according to claim 5, wherein a fixed disc (19) is fixedly arranged at one end of the outer wall of the air inlet (4), positioning grooves (20) are formed in both ends of one side of the fixed disc (19), and the outer walls of the two second limiting blocks (23) are respectively in penetrating contact with one ends of the two positioning grooves (20).

7. Co-extruded self-repairing tyre according to claim 5, characterized in that the positioning disc (24) has a fixing groove (25) in the middle of one side.

8. A co-extrusion self-repairing tire production process comprises the following steps:

step one, installing a plurality of feed inlets on an extruder, adding a self-repairing butyl rubber material into one feed inlet, starting the extruder, extruding a butyl rubber inner tube (6) semi-finished product component containing butyl rubber by starting the extruder, and then sequentially adding tire materials to extrude a tire body layer (1), an inner tube layer (5), an outer tube layer (7), a tread layer (8), a belted layer (9) and a rubber layer (11);

secondly, laying a thin synthetic rubber inner tire layer (5) on a drum, laying a tire body layer (1) at the top end of the synthetic rubber inner tire layer (5), laying belt layers (9) at two ends of one side of the tire body layer (1), sleeving meridians (10) at the middle positions of the tops of the two belt layers (9), and laying rubber layers (11) at two ends of the top of the tire body layer (1);

step three, extruding a cylinder on the drum, compressing the long cylinder to obtain a semi-finished product of the tire, and installing and paving a tread layer (8) on the surface of the tire;