Steel ring device capable of improving wire exposure of tire bead

Abstract

The utility model belongs to the technical field of tire blank clamps, and particularly relates to a steel ring device capable of improving tire bead wire exposure, which comprises a base, the upper end of the base is slidably connected with a plurality of vulcanization mold steel rings, the adjacent vulcanization mold steel rings are in contact with each other, and the edges of the upper ends of the vulcanization mold steel rings are provided with chamfers. A center cylinder is fixedly connected to the middle of the upper end of the base, a sliding rod is slidably connected to the interior of the cylinder wall of the center cylinder, one end of the sliding rod is fixedly connected with the inner wall of the vulcanization die steel ring, and a cylindrical head is fixedly connected to the other end of the sliding rod. According to the utility model, the chamfers are arranged at the edges of the upper ends of the vulcanizing die steel rings, and the angles of the chamfers are set to be 20 degrees, so that the mold entering resistance of a tire blank can be reduced, the tire can enter the mold smoothly, the deformation of the tire bead is reduced, the occurrence rate of the appearance defect of wire exposure of the tire bead is reduced, and the appearance quality of the tire is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire blank clamps, in particular to a steel ring device capable of improving the exposure of tire bead lines. Background Art

[0002] Vulcanized mold steel ring is a mold material used to make rubber products. It is usually made of vulcanized mold steel and has high hardness and wear resistance. The main function of the vulcanized mold steel ring is to fix the rubber material in the mold during the vulcanization process of the rubber product so that it can be formed. For example, the utility model patent with announcement number CN214447723U discloses a split steel rim for tire vulcanization mold, which includes an upper steel rim and a lower steel rim, the upper steel rim is composed of an upper portion and an upper second portion, the upper portion and the upper second portion are connected as a whole, a close fitting seam one between the upper portion and the upper second portion is arranged at an arc-shaped bend position of the bottom of the groove where the upper steel rim cooperates with the tire bead, and a micro-exhaust groove one is provided in the close fitting seam one, the lower steel rim is composed of a lower portion and a lower second portion, the lower portion and the lower second portion are connected as a whole, a close fitting seam two between the lower portion and the lower second portion is arranged at an arc-shaped bend position of the bottom of the groove where the lower steel rim cooperates with the tire bead, and a micro-exhaust groove two is provided in the close fitting seam two; when using it, no glue will be generated at the tire bead position during tire vulcanization, and the close fitting of the tire bead and the automobile rim will not be affected, so that there is no risk of "slow" air leakage in the tire bead.

[0003] At present, in the vulcanization process of tire industry, the bead part of the vulcanization mold steel ring and the tire embryo are embedded. The height, width, diameter and inclination angle of the steel ring determine the matching degree between the bead part and the steel ring. However, in the vulcanization production process, due to the small inner diameter design of the steel ring, it is difficult for the robot to load the tire during the tire loading process, the tire embryo and the steel ring cannot be tightly embedded, and the rubber flow during the vulcanization process is abnormal, resulting in the exposed bead line of the finished tire, affecting the appearance quality of the tire. In addition, the vulcanization mold steel ring is worn out after long-term use, which affects the opening and closing of the vulcanization mold steel ring. Therefore, improvements are needed. Utility Model Content

[0004] The utility model aims to provide a steel ring device which can improve the exposed line of the tire bead, thereby solving the problems that the existing vulcanized mold steel ring is difficult to install the tire and the wear affects the use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel ring device that can improve the tire bead exposure line, comprising a base, the upper end of the base is slidably connected to a plurality of vulcanization mold steel rings, and adjacent vulcanization mold steel rings are in contact with each other, the upper end edge of the vulcanization mold steel ring is provided with a chamfer, the middle part of the upper end of the base is fixedly connected to a center cylinder, the inner wall of the cylinder wall of the center cylinder is slidably connected to a sliding rod, one end of the sliding rod is fixedly connected to the inner wall of the vulcanization mold steel ring, the other end of the sliding rod is fixedly connected to a cylindrical head, a section of the sliding rod located on the inner side of the center cylinder is sleeved with a spring, an electric motor is fixedly installed on the middle part of the upper end of the base and on the inner side of the center cylinder, the end of the output shaft of the motor is fixedly connected to a threaded shaft, the outer side of the shaft body of the threaded shaft is threadedly connected to a threaded sleeve, the top of the threaded sleeve is fixedly connected to a hollow push block, and the hollow push block is in contact with the cylindrical head.

[0006] Preferably, the base is slidably and fixedly connected to a limiting rod inside, a slider is slidably sleeved on the outside of the rod body of the limiting rod, and the slider is slidably connected to the inside of the base, and the top of the slider is fixedly connected to the vulcanization mold steel ring. The setting of the limiting rod and the slider has a guiding and limiting effect on the vulcanization mold steel ring when it moves radially in the base.

[0007] Preferably, one end of the spring is fixedly connected to the cylindrical head, and the other end of the spring is fixedly connected to the inner wall of the central tube. Through the setting of the spring, the elastic force can act on the vulcanization mold steel ring through the cylindrical head and the slide rod.

[0008] Preferably, a guide rod is fixedly connected to the inner wall of the central tube and located above the sliding rod, and the guide rod is slidably connected to the cylindrical head. The setting of the guide rod has a guiding effect on the lateral movement of the cylindrical head.

[0009] Preferably, a refueling hole is provided at the top of the hollow push block, a connecting rod is fixedly connected to the top of the threaded shaft, the connecting rod passes through the hollow push block and extends to the inner side of the hollow push block, a pressing net is fixedly connected to the top of the connecting rod, and the pressing net is slidably connected to the inner side of the hollow push block, a support ring is fixedly connected to the inner side of the hollow push block, and the connecting rod passes through the support ring, a sponge sleeve is in contact with the support ring and the pressing net, and the sponge sleeve is slidably sleeved on the outer side of the connecting rod, a plug is fixedly connected to the middle section of the rod body of the connecting rod, and the plug is slidably connected to the support ring. When the threaded shaft and the threaded sleeve are relatively displaced by the threaded movement, the pressing net will squeeze the sponge sleeve, thereby releasing the lubricating oil, lubricating the threaded shaft and the threaded sleeve, thereby ensuring the smooth opening and closing of the vulcanization mold steel ring.

[0010] Preferably, a guide groove is fixedly connected to the inner wall of the central tube and located below the slide rod, and a guide pin is fixedly connected to the outer lower part of the threaded sleeve, and the guide pin is slidably connected to the guide groove. The arrangement of the guide groove and the guide pin has a guiding effect on the relative displacement between the threaded shaft and the threaded sleeve.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The utility model sets a chamfer at the upper edge of each vulcanization mold steel ring, and the chamfer angle is set to 20 degrees, which can reduce the resistance of the tire blank into the mold, make the tire enter the mold smoothly, reduce tire bead deformation, and reduce the occurrence rate of tire bead exposed line appearance defects, thereby improving the appearance quality of the tire.

[0013] 2. The utility model arranges a sponge sleeve inside a hollow push block used for opening and closing the steel ring of the vulcanization mold, and then stores lubricating oil in the sponge sleeve. When the threaded shaft and the threaded sleeve are relatively displaced, the pressing net squeezes the sponge sleeve to release the lubricating oil, thereby lubricating the threaded shaft and the threaded sleeve, thereby ensuring smooth opening and closing of the steel ring of the vulcanization mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 For the utility model Figure 1 A front cross-sectional view of

[0016] Figure 3 For the utility model Figure 2 A magnified view of the structure of part A;

[0017] Figure 4 For the utility model Figure 1 A three-dimensional diagram of the vulcanization mold steel ring structure.

[0018] In the figure: 1. base; 2. vulcanization mold steel ring; 201. chamfer; 3. limit rod; 4. slider; 5. center tube; 6. slide rod; 7. cylindrical head; 8. guide rod; 9. spring; 10. motor; 11. threaded shaft; 12. threaded sleeve; 13. hollow push block; 14. oil filling hole; 15. connecting rod; 16. pressing net; 17. support ring; 18. sponge sleeve; 19. plug; 20. guide groove; 21. guide pin. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 , Figure 2 , Figure 4 A steel ring device capable of improving the exposure of the tire bead line comprises a base 1, a plurality of vulcanization mold steel rings 2 are slidably connected to the upper end of the base 1, and the adjacent vulcanization mold steel rings 2 are in contact with each other, and the upper edge of the vulcanization mold steel ring 2 is provided with a chamfer 201, and the angle of the chamfer 201 is 20°, and a limiting rod 3 is slidably fixedly connected inside the base 1, and a slider 4 is slidably sleeved on the outer side of the rod body of the limiting rod 3, and the slider 4 is slidably connected to the inside of the base 1, and the top of the slider 4 is fixedly connected to the vulcanization mold steel ring 2. Through the setting of the limiting rod 3 and the slider 4, the vulcanization mold steel ring 2 has a guiding and limiting function when the base 1 moves radially.

[0021] See also Figure 2 , Figure 3 , Figure 4 A center tube 5 is fixedly connected to the middle of the upper end of the base 1, and a slide rod 6 is slidably connected to the inner wall of the center tube 5. One end of the slide rod 6 is fixedly connected to the inner wall of the vulcanization mold steel ring 2, and the other end of the slide rod 6 is fixedly connected to the cylindrical head 7. A guide rod 8 is fixedly connected to the inner wall of the center tube 5 and located above the slide rod 6, and the guide rod 8 is slidably connected to the cylindrical head 7. The setting of the guide rod 8 has a guiding effect on the lateral movement of the cylindrical head 7. A spring 9 is sleeved on the outer side of a section of the slide rod 6 located on the inner side of the center tube 5, one end of the spring 9 is fixedly connected to the cylindrical head 7, and the other end of the spring 9 is fixedly connected to the inner wall of the center tube 5. Through the setting of the spring 9, the elastic force can be applied to the vulcanization mold steel ring 2 through the cylindrical head 7 and the slide rod 6.

[0022] See also Figure 2 , Figure 3An electric motor 10 is fixedly installed in the middle of the upper end of the base 1 and on the inner side of the central tube 5. The end of the output shaft of the electric motor 10 is fixedly connected to a threaded shaft 11. The outer side of the shaft body of the threaded shaft 11 is connected to a threaded sleeve 12 through a thread. The top of the threaded sleeve 12 is fixedly connected to a hollow push block 13, and the hollow push block 13 is in contact with the cylindrical head 7. A refueling hole 14 is provided at the top of the hollow push block 13, a connecting rod 15 is fixedly connected to the top of the threaded shaft 11, the connecting rod 15 penetrates the hollow push block 13 and extends to the inner side of the hollow push block 13, a pressing net 16 is fixedly connected to the top of the connecting rod 15, and the pressing net 16 is slidably connected to the inner side of the hollow push block 13, a supporting ring 17 is fixedly connected to the inner side of the hollow push block 13, and the connecting rod 15 passes through the supporting ring 17, a sponge sleeve 18 is in contact with the supporting ring 17 and the pressing net 16, and the sponge sleeve 18 is slidably sleeved on the outer side of the connecting rod 15, a plug 19 is fixedly connected to the middle section of the rod body of the connecting rod 15, and the plug 19 is slidably connected to the supporting ring 17. When the threaded shaft 11 and the threaded sleeve 12 are relatively displaced by threaded motion, the pressing net 16 will squeeze the sponge sleeve 18, thereby releasing lubricating oil, lubricating the threaded shaft 11 and the threaded sleeve 12, thereby ensuring the smooth opening and closing of the vulcanization mold steel ring 2. A guide groove 20 is fixedly connected to the inner wall of the central tube 5 and located below the slide rod 6, and a guide pin 21 is fixedly connected to the outer lower part of the threaded sleeve 12, and the guide pin 21 is slidably connected to the guide groove 20. The arrangement of the guide groove 20 and the guide pin 21 has a guiding effect on the relative displacement between the threaded shaft 11 and the threaded sleeve 12.

[0023] The specific implementation process of the utility model is as follows: when in use, firstly, the tire embryo is normally placed on the outer side of each vulcanization mold steel ring 2. Since a 20° chamfer 201 is provided at the upper edge of the vulcanization mold steel ring 2, the resistance of the tire embryo into the mold can be reduced, so that the tire can be smoothly molded, the tire bead is less deformed, and the occurrence rate of the appearance defect of the tire bead exposed line is reduced, thereby improving the appearance quality of the tire;

[0024] Then the motor 10 is started, and the motor 10 drives the threaded shaft 11 to rotate, and the threaded sleeve 12 moves relative to the threaded shaft 11 through the relative threaded movement between the threaded shaft 11 and under the guidance of the guide groove 20 and the guide pin 21, the threaded sleeve 12 drives the hollow push block 13 on its top to move upward, and the hollow push block 13 applies a lateral thrust to the cylindrical head 7, and then the cylindrical head 7 drives the vulcanization mold steel ring 2 to unfold through the sliding rod 6, so as to clamp and fix the tire blank from the inside, and when the threaded shaft 11 and the threaded sleeve 12 are relatively displaced, the pressing net 16 will squeeze the sponge sleeve 18, thereby releasing the lubricating oil to lubricate the threaded shaft 11 and the threaded sleeve 12, thereby ensuring the smooth opening and closing of the vulcanization mold steel ring 2.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel ring device capable of improving the exposure of the tire bead line, comprising a base (1), characterized in that: The upper end of the base (1) is slidably connected to a plurality of vulcanization mold steel rings (2), and adjacent vulcanization mold steel rings (2) are in contact with each other. The upper edge of the vulcanization mold steel ring (2) is provided with a chamfer (201). The middle of the upper end of the base (1) is fixedly connected to a center tube (5). The inner wall of the center tube (5) is slidably connected to a slide rod (6). One end of the slide rod (6) is fixedly connected to the inner wall of the vulcanization mold steel ring (2), and the other end of the slide rod (6) is fixedly connected to a cylindrical head (7). The slide rod (6) is located on a section of the inner side of the central tube (5) and is sleeved with a spring (9). A motor (10) is fixedly mounted on the middle part of the upper end of the base (1) and located on the inner side of the central tube (5). The end of the output shaft of the motor (10) is fixedly connected with a threaded shaft (11). The outer side of the shaft body of the threaded shaft (11) is connected with a threaded sleeve (12) through a thread. The top of the threaded sleeve (12) is fixedly connected with a hollow push block (13), and the hollow push block (13) is in contact with the cylindrical head (7).

2. A steel ring device capable of improving the bead exposure line according to claim 1, characterized in that: The base (1) is slidably and fixedly connected to a limit rod (3) inside, the limit rod (3) is slidably sleeved with a slider (4) outside the rod body, and the slider (4) is slidably connected to the inside of the base (1), and the top of the slider (4) is fixedly connected to the vulcanization mold steel ring (2).

3. A steel ring device capable of improving the bead exposure line according to claim 1, characterized in that: One end of the spring (9) is fixedly connected to the cylindrical head (7), and the other end of the spring (9) is fixedly connected to the inner wall of the central tube (5).

4. A steel ring device capable of improving the bead exposure line according to claim 1, characterized in that: A guide rod (8) is fixedly connected to the inner wall of the central tube (5) and located above the sliding rod (6), and the guide rod (8) is slidably connected to the cylindrical head (7).

5. The steel ring device capable of improving the tire bead exposure line according to claim 1, characterized in that: A refueling hole (14) is provided at the top of the hollow push block (13); a connecting rod (15) is fixedly connected to the top of the threaded shaft (11); the connecting rod (15) passes through the hollow push block (13) and extends to the inner side of the hollow push block (13); a pressing net (16) is fixedly connected to the top of the connecting rod (15); and the pressing net (16) is slidably connected to the inner side of the hollow push block (13); a supporting ring (17) is fixedly connected to the inner side of the hollow push block (13); and the connecting rod (15) passes through the supporting ring (17); a sponge sleeve (18) is in contact with the supporting ring (17) and the pressing net (16); and the sponge sleeve (18) is slidably sleeved on the outer side of the connecting rod (15); a plug (19) is fixedly connected to the middle section of the rod body of the connecting rod (15); and the plug (19) is slidably connected to the supporting ring (17).

6. A steel ring device capable of improving the bead exposure line according to claim 5, characterized in that: A guide groove (20) is fixedly connected to the inner wall of the central tube (5) and located below the slide rod (6), and a guide pin (21) is fixedly connected to the lower outer portion of the threaded sleeve (12), and the guide pin (21) is slidably connected to the guide groove (20).

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