TWI684539B - A tire with a tread venting groove and a molding thereof - Google Patents

Abstract

The invention provides a tire with a tread venting groove and a molding thereof. The features of the tire mainly include a tread having a torus shape and two bead edges connected to opposite sides of the tread, each bead and tread with a turning portion. The tread is provided with grooves spaced apart; the tread is formed along the direction in which the toroid is extended and a plurality of venting grooves are arranged with a spacer ring; the forming mold comprises an upper mold set and a lower mold set. The upper mold set and the lower mold set include the corresponded surfaces of the upper mold and the lower mold. The upper mold set and the lower mold set include a tire tread molding module, a tire bead molding module and a tire lip molding module; the inner side of each tire tread molding module is provided with a tire tread molding wall having a toroidal shape, and each tire tread molding wall is formed with a plurality of molding strips distributed in a spacer ring row for forming an venting groove of the tire tread.

Description

Tire with tread exhaust groove and its forming mold

The present invention relates to a tire-related technology; in particular, it discloses an innovative tire with a tread exhaust groove and its molding die technology disclosed.

In the industry, the tire process is roughly divided into refining, extrusion, calendering, truncation and vulcanization and other processing procedures. The vulcanization process is combined with the vulcanization machinery, so when the temperature and time are used to cure the green tire in the mold, the tire can be vulcanized. The tread or bead produces tread patterns or patterns, and completes the tire manufacturing.

It is known that the tread of a tire after being formed usually has a number of convex hairs. The generation of the hairs (residue of the tire) is related to the tire vulcanization hardening process; in short, the vulcanization hardening In the process, the green tire is placed in the mold, and an air bladder is formed inside the green tire, and vulcanization and hardening are performed. At this time, the air bladder gradually bulges, pushing the green tire toward the mold cavity of the mold until it is outside the green tire. The rim surface can be completely attached to the mold cavity, and the tread pattern is formed according to the shape of the mold cavity. At the same time, when pushed, the air will be discharged through the vent holes provided in the mold, so the vent holes will be generated on the tire tread. Numerous small capillary hairs covered with gaps are the reason why the outer edges of the tread of new tires are covered with capillary hairs.

Due to the problems of polluting the environment and being unenvironmentally friendly, the aforementioned tire hair has long been the cause of human scale disease for finished tires, but so far there is no simple and effective technology that can effectively solve the problem of the tire hair, which is worthy of continued attention by the relevant industry. Important technical issues.

Therefore, in view of the problems existing in the above-mentioned conventional tire structure, how to develop an innovative structure that can be more ideal and practical, and the related industry needs to think about the goal and direction of the breakthrough; in view of this, the inventor himself After many years of experience in manufacturing development and design of related products, in accordance with the above objectives, after detailed design and prudent evaluation, we finally have a practical invention.

The main purpose of the present invention is to provide a tire with a tread exhaust groove and its forming mold. The technical problem it wants to solve is to develop a new type of tire and its forming mold that are more ideal and practical. The goal is to think about innovative breakthroughs.

Based on the foregoing purpose, one of the technical features of the present invention to solve the problem is that the tire system includes: a tread with a torus shape and two sidewalls connected to opposite sides of the tread, each of the sidewalls and the tread There is a turning part between the treads, and the tread is provided with spaced-apart grooves; and several exhaust grooves are distributed along the extending direction of the ring surface, and each exhaust groove has two penetrations respectively penetrating two sidewalls The end portion forms a pattern in which each exhaust groove extends laterally across the tread relative to each other; and the forming mold system includes: an upper mold group and a lower mold group that can selectively perform mold opening and closing operations, and the upper and lower molds The group has a corresponding upper mold clamping surface and a lower mold clamping surface, and each of which includes a tread molding module, a bead molding module and a bead molding module. Each tread molding module is provided with a toroidal shape on the inside of the tread molding module. Shaped wall; and each tread shaped wall is formed along the toroidal extension direction and formed with a plurality of forming stripes distributed at intervals of the ring row, and each forming fringe has two abutting ends respectively extending to the bead forming module, so as to be shaped by each The stripes form a number of exhaust grooves provided in the tread of the tire, and when the forming mold generates gas due to vulcanization and hardening, it is guided and discharged by each forming strip.

The second technical feature of the problem-solving problem of the present invention is to provide a molding die for molding the tire with a tread groove. The molding die includes one of selective mold opening and closing operations. The mold group and the lower mold group, wherein the upper mold group and the lower mold group have corresponding upper and lower mold clamping surfaces, and the upper mold group and the lower mold group each include a tread forming module, a bead forming module and The lip shaping module, each inside of the tread shaping module is provided with a tread shaped wall in the form of a torus; and each tread shaped wall is formed with a plurality of shaped stripes distributed at intervals in a row along its toroidal extension direction, and each The forming stripes have two abutting ends respectively extending to the bead forming module to form a plurality of exhaust grooves provided by the forming stripes for the tire tread, and when the forming mold generates gas due to vulcanization and hardening, the The gap formed between the forming stripes and the exhaust groove guides the discharge.

The main effects and advantages of the present invention are that several exhaust grooves of the tire tread can be formed by the molding stripes of the molding die, and when the molding die generates gas due to vulcanization and hardening, it can be guided and discharged by the molding stripes to facilitate To achieve the ideal state of tire tread without capillary formation, or to achieve the advantage of greatly reducing the amount of tread capillary wool, in order to meet the current environmental awareness requirements, greatly improve the environmental quality, and have practical progress and better industrial utilization benefits.

Please refer to Figures 1 to 4 for the preferred embodiment of the tire with tread vent groove and its forming mold of the present invention, but these embodiments are for illustrative purposes only and are not subject to this in patent applications Structural limitations.

The tire with tread exhaust groove and its molding die, the tire 10 includes the following structure: a tread 11 in a toroidal shape and two sidewalls 12 connected to opposite sides of the tread 11, each There is a turning portion 13 between the bead 12 and the tread 11, the tread 11 is provided with spaced-apart sipes 14; and wherein the tread 11 is formed with spaced annular rows along the direction of its ring surface extension A plurality of exhaust grooves 15, and each of the exhaust grooves 15 has two penetrating ends 16 that respectively pass through the second bead 12, and each of the exhaust grooves 15 extends laterally across the tread 11 Type; the forming mold includes the following components (see Figures 5 to 7): an upper mold set 20 and a lower mold set 30 that can selectively perform one of mold opening and closing actions, in which the upper mold set 20 and the lower mold group 30 have an upper mold clamping surface 40 and a lower mold clamping surface 50, and the upper mold group 20 and the lower mold group 30 each include a tread forming module 21, 31, a tire Edge forming modules 22, 32 and a bead forming module 23, 33, inside each of the tread forming modules 21, 31 is provided with a tread shaping wall 211, 311 in a toroidal shape; The shaped walls 211 and 311 are formed with a plurality of forming stripes 60 distributed at intervals in the circumferential direction of the ring surface, and each of the forming stripes 60 has two abutting ends 61 respectively extending to the bead forming modules 22 and 32. A plurality of exhaust grooves 15 provided on the tread 11 of the tire 10 are formed by the plurality of molding stripes 60, and when the molding die generates gas due to vulcanization and hardening, each of the molding stripes 60 and the exhaust groove 15 The gap formed between them guides the discharge.

The extended shape of each of the exhaust grooves 15 is one of the following: V-shaped, arc-shaped, straight-line, or wavy; the preferred embodiment is V-shaped (as shown in FIG. 3).

In addition, the extended shape of each of the formed stripes 60 is any one of the following: an arc shape, a straight shape, or a wavy shape.

As shown in FIG. 4, in this example, the width (W1) of each exhaust groove 15 is between 0.5 mm and 1 mm; the depth (H) of each exhaust groove 15 is between 0.5 mm and 1 mm And the distance (W2) between the adjacent exhaust grooves 15 is between 0.3 mm and 1 mm; and in this example, the exhaust grooves 15 are spaced parallel by being provided on the tread 11 The two concave strips 17 are defined by the relative concave parts.

As shown in FIG. 7, in this example, an air gap 70 is formed between the tread molding modules 21 and 31 and the bead molding modules 22 and 32 to connect and discharge the molding stripes 60 and the exhaust groove 15 The gap between them guides the exhaust gas.

Based on the above-mentioned structural types and technical features, in the practical application of the tire with a tread vent groove and its molding mold disclosed by the present invention, the tread molding module 21, the bead molding module 22, the tire through the upper mold set 20 The lip forming module 23 and the tread forming module 31, the bead forming module 32, and the bead forming module 33 of the lower mold group 30 move up and down together (as shown in FIG. 5), and the green tire 10B is removed (note: due to It has not been formed and cured into a tire, so it is called a green tire). Place it in a mold that has been clamped and perform a vulcanization process. This vulcanization process will generate gas inside the unformed tire 10, causing the unformed tire 10 to be A plurality of molding stripes 60 (as shown in FIG. 6) pushed to the respective tread molding modules 21, 31, and a plurality of exhaust grooves 15 and a plurality of convex strips 17 (as shown in FIG. 4) are formed, and the gas passes through The gap formed between each molding stripe 60 and the exhaust groove 15 is guided to the air gap 70 between each tread molding module 21, 31 and the bead molding module 22, 32 (the gas is guided in the direction 7 shown by arrows L1 and L2); from this, it can be seen that the tire and the mold having the tread vent groove disclosed by the present invention can indeed achieve the ideal state of achieving the tire tread without the formation of tire hair or achieve a large The advantage of reducing the number of tread hairs is to meet the current environmental awareness requirements and greatly improve the environmental quality; on the other hand, the tire 10 tread 11 of the present invention is provided with a number of exhaust grooves 15 in addition to the exhaust function of the aforementioned process, For finished tires, in addition to the original shape of the groove pattern, the tire tread can also produce a visual effect similar to a fine pattern, which is also a great help for the creation of special styles and novel aesthetic textures.

An additional point is that whether the final product of the present invention can achieve the condition of the tire tread without the formation of wool in the previous paragraph depends on the design of the air gap channel between each of the molding modules. 31, and an air gap 70 formed between the bead forming modules 22, 32 to exhaust the gas, the finished tread 11 of the final tire 10 can indeed achieve a state without capillary formation; however, if the industry orders An air gap 70 is also formed between the upper mold set 20 and the lower mold set 30 tread forming modules 21, 31 to assist in the exhaust of gas, and the final tire 10 product will also form a row at the parting line of the tread 11 Even if it is so, compared with the conventional tires, it has been able to achieve the advantages and progress of greatly reducing the amount of tread tire hairs (Note: Because the tire hairs on the treads of conventional tires are many spacer cloths) Full of the tread).

10. Tires

10B‧‧‧born tire

11‧‧‧Tread

12‧‧‧Tire

13. Turning Department

14‧‧‧ Girth

15‧‧‧Exhaust ditch

16. Through the end

17‧‧‧Convex strip

20‧‧‧Upper mould group

21, 31‧‧‧Tread molding module

211, 311‧‧‧Tread shaping wall

22, 32 ‧‧‧ Tire molding module

23, 33 ‧‧‧ Tire molding module

30‧‧‧Lower mould group

40‧‧‧ Upper mold surface

50‧‧‧Lower clamping surface

60‧‧‧forming stripes

61‧‧‧ against the end

70‧‧‧ Air gap

Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is an enlarged view of part B of Figure 1. Figure 3 is a front view of the preferred embodiment of the present invention. Figure 4 is a cross-sectional view of Figure 4-4-4. Figure 5 is a cross-sectional view of the molding die in use. Figure 6 is an enlarged view of part B of Figure 5. Figure 7 is an enlarged view of part C of Figure 5.

10‧‧‧Tire

11‧‧‧Tread

12‧‧‧Tire

13‧‧‧Transition Department

14‧‧‧ Groove

15‧‧‧Exhaust

16‧‧‧Through the end

Claims (7)

A tire with a tread exhaust groove, the tire includes a tread in a torus shape and two sidewalls connected to opposite sides of the tread, and each corner has a turning portion between the tread and the tread , The tread is provided with grooves distributed at intervals; and wherein, the tread is formed with a plurality of exhaust grooves distributed at intervals in the circumferential direction along the direction of the ring surface, and each of the exhaust grooves respectively has the two tires The two penetrating ends of the edge form a pattern in which each of the exhaust grooves extends laterally across the tread relative to each other; wherein the width of each exhaust groove is between 0.5 mm and 1 mm; The distance between the exhaust grooves is between 0.3mm and 1mm. The tire having a tread exhaust groove as described in item 1 of the patent application scope, wherein the depth of each exhaust groove is between 0.5 mm and 1 mm. A tire having a tread exhaust groove as described in item 1 or 2 of the patent application, wherein each of the exhaust grooves is provided by a relatively concave portion between two convex strips arranged in parallel on the tread surface at intervals Defined by. The tire having a tread exhaust groove as described in item 3 of the patent application scope, wherein each extended shape of the exhaust groove is any one of the following: V-shaped, arc-shaped, linear or wavy. A molding die for molding a tire having a tread exhaust groove as described in any one of the items 1 to 4 of the patent application range, the molding die includes optional mold opening and closing One of the mold movements, the upper mold group and the lower mold group, wherein the upper mold group and the lower mold group have corresponding upper and lower mold clamping surfaces, and the upper mold group and the lower mold group each include A tread forming module, a bead forming module, and a bead forming module, each of the tread forming modules is provided with a tread shaped wall in a toroidal shape; and wherein each of the tread shaped walls is along its A plurality of forming stripes distributed in a spaced row are formed in the extending direction of the torus, and each of the forming stripes has two abutting ends respectively extending to the bead forming module to form the tire tread by the forming stripes A plurality of exhaust grooves are provided, and when the molding die generates gas due to vulcanization and hardening, it is guided and discharged through the gap formed between each molding strip and the exhaust groove. The molding die as described in item 5 of the patent application scope, wherein an air gap is formed between the tread molding module and the bead molding module to connect and discharge the gap between the molding stripes and the exhaust groove Divert the exhaust gas. The molding die as described in Item 6 of the patent application range, wherein the extended shape of each molding stripe is any one of the following: an arc shape, a straight shape, or a wavy shape.

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