Vacuumizing tire mold

Abstract

The utility model discloses a vacuumizing tire mold, which belongs to the field of manufacturing of molds for tire vulcanization and comprises a mold shell component consisting of an upper cover, a base and a guide ring. The upper end face of the guide ring is connected with an installation ring, the upper end face of the upper cover is connected with a sealing flange, the center line of the sealing flange coincides with the center line of the upper cover, an upper sealing ring is arranged between the installation ring and the sealing flange, the height of the sealing flange is larger than the thickness of the upper sealing ring, and the upper sealing ring ascends and descends along with the installation ring. The inner side of the upper sealing ring is in sealing fit with the outer side wall of the sealing flange, a lower sealing boss is arranged on the outer circumferential face of the base, and the outer side of the guide ring is in sealing fit with the contact face of the inner side of the lower sealing boss. And when the guide ring descends to drive the contact surface of the upper sealing ring and the sealing flange to be in sealing fit, the contact surface of the guide ring and the lower sealing boss is also in sealing fit. Through the structure, the sealing flange can be additionally arranged on the upper end face of the upper cover, so that the mold shell has a larger vacuumizing stroke, and the vacuumizing operation can be carried out earlier before the mold is closed.

Description

Technical Field

[0001] The utility model relates to the field of mold manufacturing for tire vulcanization, in particular to a vacuum tire mold. Background Art

[0002] Tire molds are key components for vulcanizing tires, and they determine the quality, performance, and cost of tires. When vulcanizing tires, the air between the mold and the tire blank must be exhausted through the exhaust structure, otherwise the tire will be defective and scrapped. In order to exhaust the gas, a large number of air holes need to be set on the mold. These air holes will form a large amount of rubber hair on the tire, which not only wastes the rubber, but also affects the appearance and performance of the tire. In addition, if the tire mold is used for a long time, the rubber will block the exhaust holes, causing air pockets, and the tire will be scrapped due to lack of rubber.

[0003] During the use of vacuum tire molds, it is necessary to reasonably control the timing of vacuuming to achieve the ideal vacuuming effect. After simulation and practice, when the vacuuming conditions are met, the vacuuming control system is immediately started to extract the air in the pipeline in advance, which can reduce the vacuuming time and improve production efficiency. Although the current vacuum tire molds can meet the needs of advance vacuuming, they are affected by the upper cover structure and the advance vacuuming time is too short. Therefore, the vacuuming efficiency has been difficult to break through.

[0004] In view of the above problems existing in the prior art, the present invention designs and manufactures a vacuum tire mold based on many years of design and use experience in the relevant field to overcome the above defects. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a vacuum tire mold, which can add a sealing flange on the upper end face of the upper cover, so that the mold shell has a larger vacuum stroke. The vacuum operation can be performed earlier before the mold is closed, thereby further reducing the number of air holes, avoiding air traps, and improving the appearance quality of the tire.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a vacuum tire mold, comprising a mold shell assembly and a cavity assembly arranged in the mold shell assembly, the cavity assembly is composed of an upper side plate, a lower side plate and a plurality of pattern blocks, and the mold shell assembly is composed of an upper cover, a base and a guide ring;

[0007] The upper end surface of the guide ring is connected to a mounting ring, the upper end surface of the upper cover is connected to a sealing flange, the center line of the sealing flange coincides with the center line of the upper cover, an upper sealing ring is arranged between the mounting ring and the sealing flange, the height of the sealing flange is greater than the thickness of the upper sealing ring, and the upper sealing ring rises and falls with the mounting ring;

[0008] The inner side of the upper sealing ring is in sealing cooperation with the outer side wall of the sealing flange, the outer circumferential surface of the base is provided with a lower sealing boss, and the outer side of the guide ring is in sealing cooperation with the contact surface on the inner side of the lower sealing boss;

[0009] When the guide ring descends to drive the contact surface of the upper sealing ring and the sealing flange to seal, the contact surface of the guide ring and the lower sealing boss also seals.

[0010] Preferably, the height of the sealing flange is 2-4 times the thickness of the upper sealing ring.

[0011] Preferably, the sealing flange is detachably mounted on the upper end surface of the upper cover.

[0012] Preferably, a first sealing structure is provided between the upper sealing ring and the sealing flange, the first sealing structure comprises a first sealing groove, the first sealing groove is provided on the inner side wall of the upper sealing ring, and a first sealing ring is provided in the first sealing groove.

[0013] Preferably, a second sealing structure is provided between the outer side of the guide ring and the inner side of the lower sealing boss, the second sealing structure includes a second sealing groove, the second sealing groove is arranged on the outer side wall of the guide ring or on the inner side wall of the lower sealing boss, and a second sealing ring is provided in the second sealing groove.

[0014] Preferably, an annular step is provided on the inner side of the upper end surface of the mounting ring, and the upper sealing ring overlaps the annular step.

[0015] Preferably, a third sealing structure is provided between the upper sealing ring and the annular step, and the third sealing structure includes a third sealing groove, and the third sealing groove is arranged on the vertical surface of the annular step or on the outer side wall of the upper sealing ring, and a third sealing ring is provided in the third sealing groove.

[0016] Preferably, a fourth sealing structure is provided between the guide ring and the mounting ring, the fourth sealing structure comprises a fourth sealing groove, the fourth sealing groove is arranged on the upper end surface of the guide ring or the lower end surface of the mounting ring, and a fourth sealing ring is provided in the fourth sealing groove.

[0017] Preferably, a fifth sealing structure is provided between the base and the lower side plate, the fifth sealing structure comprises a fifth sealing groove, the fifth sealing groove is arranged on the upper end surface of the base or the bottom surface of the lower side plate, and a fifth sealing ring is provided in the fifth sealing groove.

[0018] Preferably, a sixth sealing structure is provided between the upper cover and the sealing flange, the sixth sealing structure comprises a sixth sealing groove, the sixth sealing groove is arranged on the upper end surface of the upper cover or the lower end surface of the sealing flange, and a sixth sealing ring is provided in the sixth sealing groove.

[0019] The utility model is beneficial in that:

[0020] 1. The utility model adds a sealing flange to the upper end face of the upper cover, so that the upper sealing ring can be sealed and contacted with the sealing flange in advance, thereby making the mold shell have a larger vacuum stroke. The vacuum operation can be carried out earlier before the mold is closed, which can reduce the number of pores to the greatest extent, avoid the phenomenon of air trapping, and improve the appearance quality of the tire.

[0021] 2. In the utility model, when the contact surface of the upper sealing ring and the sealing flange is sealed, the contact surface of the guide ring and the lower sealing boss is also sealed, thereby ensuring the sealed environment inside the mold before closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a vacuum tire mold guide ring when it is raised;

[0023] Figure 2 A schematic diagram of a sealing ring on a vacuum tire mold and a sealing flange when they begin to make sealing contact;

[0024] Figure 3 It is a schematic diagram of a vacuum tire mold after mold closing.

[0025] In the figure: 1-sealing flange, 2-upper sealing ring, 3-mounting ring, 4-guide ring, 5-base, 6-upper cover, 7-upper side plate, 8-pattern block, 9-lower side plate, 10-first sealing structure, 11-second sealing structure, 12-third sealing structure, 13-fourth sealing structure, 14-fifth sealing structure, 15-sixth sealing structure. DETAILED DESCRIPTION

[0026] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 3 As shown, a vacuum tire mold includes a mold shell assembly and a cavity assembly arranged in the mold shell assembly, the cavity assembly is composed of an upper side plate 7, a lower side plate 9 and a plurality of pattern blocks 8, and the mold shell assembly is composed of an upper cover 6, a base 5 and a guide ring 4.

[0028] The upper end surface of the guide ring 4 of the utility model is connected with a mounting ring 3, and the upper end surface of the upper cover 6 is connected with a sealing flange 1. The sealing flange 1 is preferably detachably mounted on the upper end surface of the upper cover 6. A sealing flange positioning and mounting groove is preferably provided on the upper end surface of the upper cover 6. The sealing flange 1 is installed in the sealing flange positioning and mounting groove. The center line of the sealing flange 1 coincides with the center line of the upper cover 6. An upper sealing ring 2 is provided between the mounting ring 3 and the sealing flange 1. Specifically, an annular step is provided on the inner side of the upper end surface of the mounting ring 3, and the upper sealing ring 2 is overlapped on the annular step. The height of the sealing flange 1 is greater than the thickness of the upper sealing ring 2. The height of the sealing flange 1 is preferably 2-4 times the thickness of the upper sealing ring 2, and the upper sealing ring 2 can be raised and lowered with the mounting ring 3.

[0029] The inner side of the upper sealing ring 2 is sealed with the outer side wall of the sealing flange 1, and a lower sealing boss is provided on the outer circumferential surface of the base 5. The outer side of the guide ring 4 is sealed with the contact surface on the inner side of the lower sealing boss. When the guide ring 4 descends to drive the upper sealing ring 2 to seal with the contact surface of the sealing flange 1, the contact surface of the guide ring 4 and the lower sealing boss is also sealed, ensuring the internal sealing environment before the mold is closed.

[0030] The utility model adds a sealing flange 1 to the upper end surface of the upper cover 6, so that the upper sealing ring 2 can be sealed and contacted with the sealing flange 1 in advance, thereby making the mold shell have a larger vacuum stroke, and the vacuum operation can be performed earlier before the mold is closed, which can reduce the number of pores to the greatest extent, avoid the air trap phenomenon, and improve the appearance quality of the tire.

[0031] Due to the large-scale reduction of pores, the amount of rubber used in the tire is reduced, which can reduce the tire production cost. In addition, the reduction of pores can reduce the mold processing cost and the purchase cost of the tire factory. Furthermore, since there is very little remaining tire hair, the vulcanized tire can be sold directly without shaving the rubber hair. The tire factory can cancel the rubber hair shaving process, eliminating the additional equipment and labor costs, and can also avoid the problem of cutting the outer surface of the tire during the rubber hair shaving process. In addition, the waste treatment cost can be reduced after the rubber hair is shaved, and the environmental pollution can be reduced.

[0032] Specifically, a first sealing structure 10 is provided between the upper sealing ring 2 and the sealing flange 1 . The first sealing structure 10 includes a first sealing groove. The first sealing groove is provided on the inner side wall of the upper sealing ring 2 . A first sealing ring is provided in the first sealing groove.

[0033] A second sealing structure 11 is provided between the outer side of the guide ring 4 and the inner side of the lower sealing boss. The second sealing structure 11 includes a second sealing groove provided on the outer side wall of the guide ring 4 or on the inner side wall of the lower sealing boss. A second sealing ring is provided in the second sealing groove.

[0034] A third sealing structure 12 is provided between the upper sealing ring 2 and the annular step. The third sealing structure 12 includes a third sealing groove. The third sealing groove is provided on the vertical surface of the annular step or on the outer side wall of the upper sealing ring 2. A third sealing ring is provided in the third sealing groove.

[0035] A fourth sealing structure 13 is provided between the guide ring 4 and the mounting ring 3. The fourth sealing structure 13 includes a fourth sealing groove. The fourth sealing groove is provided on the upper end surface of the guide ring 4 or the lower end surface of the mounting ring 3. A fourth sealing ring is provided in the fourth sealing groove.

[0036] A fifth sealing structure 14 is provided between the base 5 and the lower side plate 9. The fifth sealing structure 14 includes a fifth sealing groove. The fifth sealing groove is provided on the upper end surface of the base 5 or the bottom surface of the lower side plate 9. A fifth sealing ring is provided in the fifth sealing groove.

[0037] A sixth sealing structure 15 is provided between the upper cover 6 and the sealing flange 1. The sixth sealing structure 15 comprises a sixth sealing groove. The sixth sealing groove is provided on the upper end surface of the upper cover 6 or the lower end surface of the sealing flange 1. A sixth sealing ring is provided in the sixth sealing groove.

[0038] With the aid of the sealing structure, the internal sealing environment of the mold is ensured before and after the mold is closed.

[0039] Specific action flow:

[0040] In the initial position, the guide ring 4 is in the raised position, and the mounting ring 3 and the upper sealing ring 2 are also in the raised position;

[0041] The guide ring 4 is lowered to close the mold. During the process, the upper sealing ring 2 will contact the sealing flange 1. The contact surface of the upper sealing ring 2 and the sealing flange 1 is sealed and matched. At the same time, the contact surface of the guide ring 4 and the lower sealing boss is also sealed and matched. At this time, the vacuum operation can be carried out in advance before the mold is closed.

[0042] As the guide ring 4 continues to descend, the mold closing action is finally completed.

[0043] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A vacuum tire mold, characterized in that: It comprises a mold shell component and a cavity component arranged in the mold shell component, wherein the cavity component is composed of an upper side plate (7), a lower side plate (9) and a plurality of pattern blocks (8), and the mold shell component is composed of an upper cover (6), a base (5) and a guide ring (4); The upper end surface of the guide ring (4) is connected to a mounting ring (3), the upper end surface of the upper cover (6) is connected to a sealing flange (1), the center line of the sealing flange (1) coincides with the center line of the upper cover (6), an upper sealing ring (2) is provided between the mounting ring (3) and the sealing flange (1), the height of the sealing flange (1) is greater than the thickness of the upper sealing ring (2), and the upper sealing ring (2) rises and falls with the mounting ring (3); The inner side of the upper sealing ring (2) is in sealing cooperation with the outer side wall of the sealing flange (1); the outer circumferential surface of the base (5) is provided with a lower sealing boss; the outer side of the guide ring (4) is in sealing cooperation with the contact surface on the inner side of the lower sealing boss; When the guide ring (4) descends to drive the contact surface of the upper sealing ring (2) and the sealing flange (1) to seal, the contact surface of the guide ring (4) and the lower sealing boss also seals.

2. A vacuum tire mold according to claim 1, characterized in that: The height of the sealing flange (1) is 2-4 times the thickness of the upper sealing ring (2).

3. The vacuum tire mold according to claim 1, characterized in that: The sealing flange (1) is detachably mounted on the upper end surface of the upper cover (6).

4. The vacuum tire mold according to claim 1, characterized in that: A first sealing structure (10) is provided between the upper sealing ring (2) and the sealing flange (1), wherein the first sealing structure (10) comprises a first sealing groove, the first sealing groove being arranged on the inner side wall of the upper sealing ring (2), and a first sealing ring being arranged in the first sealing groove.

5. The vacuum tire mold according to claim 1, characterized in that: A second sealing structure (11) is provided between the outer side of the guide ring (4) and the inner side of the lower sealing boss. The second sealing structure (11) comprises a second sealing groove. The second sealing groove is provided on the outer side wall of the guide ring (4) or on the inner side wall of the lower sealing boss. A second sealing ring is provided in the second sealing groove.

6. The vacuum tire mold according to claim 1, characterized in that: An annular step is provided on the inner side of the upper end surface of the mounting ring (3), and the upper sealing ring (2) overlaps the annular step.

7. The vacuum tire mold according to claim 1, characterized in that: A third sealing structure (12) is provided between the upper sealing ring (2) and the annular step, the third sealing structure (12) comprising a third sealing groove, the third sealing groove being provided on the annular step facade or on the outer side wall of the upper sealing ring (2), and a third sealing ring being provided in the third sealing groove.

8. The vacuum tire mold according to claim 1, characterized in that: A fourth sealing structure (13) is provided between the guide ring (4) and the mounting ring (3), the fourth sealing structure (13) comprising a fourth sealing groove, the fourth sealing groove being arranged on the upper end surface of the guide ring (4) or the lower end surface of the mounting ring (3), and a fourth sealing ring being arranged in the fourth sealing groove.

9. The vacuum tire mold according to claim 1, characterized in that: A fifth sealing structure (14) is provided between the base (5) and the lower side plate (9), the fifth sealing structure (14) comprising a fifth sealing groove, the fifth sealing groove being provided on the upper end surface of the base (5) or on the bottom surface of the lower side plate (9), and a fifth sealing ring being provided in the fifth sealing groove.

10. The vacuum tire mold according to claim 1, characterized in that: A sixth sealing structure (15) is provided between the upper cover (6) and the sealing flange (1), and the sixth sealing structure (15) comprises a sixth sealing groove, which is arranged on the upper end surface of the upper cover (6) or on the lower end surface of the sealing flange (1), and a sixth sealing ring is provided in the sixth sealing groove.

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