A mold for manufacturing a tire pattern cutter groove and a tire pattern structure

Abstract

The application discloses a preparation mold for a tire pattern knife groove and a tire pattern structure, relates to the technical field of tires, and comprises a supporting surface, a ring groove protrusion and a steel sheet. The supporting surface is used for being attached to a tread. The ring groove protrusion is arranged on the supporting surface and is used for forming a ring groove on the tread. The steel sheet has oppositely arranged first and second cutting portions. The first cutting portion is arranged along the normal direction of the protruding side wall of the ring groove protrusion and is connected with the protruding side wall of the ring groove protrusion. The first cutting portion is used for forming a notch of the knife groove. The second cutting portion intersects with the supporting surface. The second cutting portion is used for forming the knife groove. The preparation mold for the tire pattern knife groove can make the notch of the knife groove on the tread be arranged along the normal direction of the ring groove side wall of the ring groove, ensures the uniformity of the rigidity of the tire pattern, and is favorable for reducing the noise of the tire and improving the performance of the tire.

Description

Technical Field

[0001] This application relates to the field of tire technology, and more specifically, to a mold for preparing tire tread grooves and a tire tread structure. Background Technology

[0002] Tire tread grooves are the narrow grooves cut into the tire tread. They can be used to adjust tire rigidity, increase tire-road contact, thereby improving traction, and also help reduce noise generated when the tire rotates.

[0003] In traditional tire tread pattern preparation molds, the grooves formed by the steel sheet of the tire tread pattern are not set along the normal direction of the sidewall of the circumferential groove, and the angle between the groove and the sidewall of the circumferential groove is uneven, resulting in uneven tread rigidity, which affects the tire's noise, wear resistance and other properties. At the same time, the tread grooves are prone to being scratched during the demolding process after tire vulcanization, which in turn affects the service life of the steel sheet and increases repair costs.

[0004] Therefore, ensuring uniformity in tire tread rigidity and improving tire performance has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a mold for preparing tire tread grooves to ensure the uniformity of tire tread rigidity and improve tire performance.

[0006] Another objective of this application is to provide a tire tread structure prepared using the above-described mold for preparing tire tread grooves.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] A mold for preparing tire tread grooves, comprising:

[0009] A support surface, the support surface being used to conform to the tire tread;

[0010] A ring groove protrusion is provided on the support surface and is used to form a ring groove on the tire tread.

[0011] A steel sheet having a first cutting portion and a second cutting portion disposed opposite to each other. The first cutting portion is disposed along the normal direction of the protruding sidewall of the annular groove and is connected to the protruding sidewall of the annular groove. The first cutting portion is used to form the groove of the cutting groove. The second cutting portion intersects with the support surface and is used to form the cutting groove.

[0012] Optionally, in the above-described mold preparation, the steel sheet is bent along the extending direction of the annular groove protrusion at the intersection of the protruding sidewall of the annular groove protrusion and the supporting surface to form the first cutting portion and the second cutting portion.

[0013] Optionally, in the above-described mold preparation, one end of the steel sheet away from the protruding sidewall of the annular groove protrusion is twisted along the extending direction of the annular groove protrusion to form the first cutting portion and the second cutting portion, and the second cutting portion is arranged along the normal of the support surface.

[0014] Optionally, in the above-mentioned mold preparation, the steel sheet is a twisted surface prepared by 3D stamping.

[0015] Optionally, in the above-mentioned preparation mold, the steel sheet has a torsion section, which is a position where the connection end of the steel sheet and the protruding sidewall of the annular groove extends to the end of the steel sheet away from the protruding sidewall of the annular groove to a preset distance, the preset distance being 4mm to 6mm.

[0016] Optionally, in the above-described mold preparation, the steel sheet includes at least three points along the normal direction of the support surface in the extension direction of the annular groove protrusion.

[0017] Optionally, in the above-described mold preparation, the angle between the steel sheet and the supporting surface is 90°±2°.

[0018] Optionally, in the above-mentioned mold preparation, the steel sheet comprises a plurality of steel sheets, and each steel sheet is spaced apart on the raised sidewall of the annular groove protrusion.

[0019] A tire tread pattern structure, prepared using a die for preparing tire tread grooves as described in any of the preceding claims, comprising:

[0020] Circular grooves are provided on the tread of the tire along the circumferential direction of the tire;

[0021] A cutting groove is provided on one side of the annular groove and is connected to the annular groove. The groove opening is provided along the normal direction of the annular groove sidewall.

[0022] Optionally, in the above tire tread structure, the angle between the sidewall of the sipe and the tread in the depth direction is 90°±2°.

[0023] The mold for preparing tire tread grooves provided in this application is attached to the tire tread by a supporting surface, and the circumferential groove on the tire tread can be formed by the circumferential groove protrusion on the supporting surface. At the same time, the steel sheet has a first cutting part and a second cutting part. The first cutting part is arranged along the normal direction of the protruding sidewall of the circumferential groove protrusion and is connected to the protruding sidewall of the circumferential groove protrusion so that the groove opening can be formed through the first cutting part, ensuring that the groove opening can be arranged along the normal direction of the circumferential groove sidewall. The second cutting part is arranged intersecting with the supporting surface so that the groove can be formed through the second cutting part. As can be seen from the above examples, the mold for preparing tire tread grooves provided in this application can be set along the normal direction of the raised sidewall of the annular groove by the first cutting part of the steel sheet, so that the groove opening can be set along the normal direction of the annular groove sidewall. The second cutting part is intersecting with the support surface so that the groove can be formed through the second cutting part. Thus, the groove openings of the tread grooves can all be set along the normal direction of the annular groove sidewall, ensuring the uniformity of tire tread rigidity. At the same time, it can help reduce tire noise, improve tire performance, reduce tread groove damage, increase the service life of the steel sheet, reduce repair costs, and improve the appearance quality of the tire.

[0024] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 A partial schematic diagram of a conventional manufacturing mold provided for embodiments of this application. Figure 1 ;

[0027] Figure 2 A partial schematic diagram of a conventional manufacturing mold provided for embodiments of this application. Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the structure of a conventional tool groove provided in an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the structure of the preparation mold provided in the embodiments of this application;

[0030] Figure 5 A partial schematic diagram of the preparation mold provided in Embodiment 1 of this application. Figure 1 ;

[0031] Figure 6 A partial schematic diagram of the preparation mold provided in Embodiment 1 of this application. Figure 2 ;

[0032] Figure 7 This is a schematic diagram of the tool groove provided in Embodiment 1 of this application;

[0033] Figure 8 A partial schematic diagram of the preparation mold provided in Embodiment 2 of this application. Figure 1 ;

[0034] Figure 9 A partial schematic diagram of the preparation mold provided in Embodiment 2 of this application. Figure 2 ;

[0035] Figure 10 This is a schematic diagram of the tool groove provided in Embodiment 2 of this application;

[0036] Figure 11 A partial schematic diagram of the preparation mold provided in Embodiment 3 of this application. Figure 1 ;

[0037] Figure 12 A partial schematic diagram of the preparation mold provided in Embodiment 3 of this application. Figure 2 ;

[0038] Figure 13 This is a schematic diagram of the tool groove provided in Embodiment 3 of this application.

[0039] Where 100 is the support surface;

[0040] 200 is the annular groove protrusion, and 201 is the sidewall of the protrusion;

[0041] 300 is a steel sheet, 301 is the first cutting section, 302 is the second cutting section, and 303 is the torsion section;

[0042] 400 is the ring ditch, and 401 is the sidewall of the ring ditch;

[0043] 500 is the cutting groove, and 501 is the slot opening;

[0044] 600 is the tire tread size. Detailed Implementation

[0045] The core of this application is to provide a mold for preparing tire tread grooves to ensure the uniformity of tire tread rigidity and improve tire performance.

[0046] Another key aspect of this application is to provide a tire tread structure prepared using the aforementioned mold for tire tread grooves.

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] like Figures 1 to 3 As shown, in traditional tire tread pattern preparation molds, the grooves 500 formed by the steel sheet 300 do not have their openings 501 aligned with the normal direction of the annular groove sidewall 401, and the angles between the groove openings 501 and the annular groove sidewall 401 are uneven. This results in poor uniformity of the tire tread block volume, leading to uneven rigidity and affecting tire wear resistance. Furthermore, the uneven angles between the groove openings 501 and the annular groove sidewall 401 cause the grooves 500 on both sides of the annular groove 400 to easily form through cavities with other tread patterns. This can cause air resonance within these cavities, hindering tire noise reduction. In addition, the grooves 500 are prone to scoring during the demolding process after tire vulcanization, affecting the service life of the steel sheet 300 and increasing repair costs.

[0049] Therefore, such as Figure 4 As shown in the embodiment of this application, a mold for preparing tire tread grooves is disclosed, including a support surface 100, an annular groove protrusion 200, and a steel sheet 300. The first cutting portion 301 of the steel sheet 300 is arranged along the normal direction of the protruding sidewall 201 of the annular groove protrusion 200, so that the groove opening 501 of the groove 500 can be arranged along the normal direction of the annular groove 400 sidewall. The second cutting portion 302 is arranged intersecting with the support surface 100, so that the groove 500 can be formed through the second cutting portion 302. This ensures that the groove openings 501 of the grooves 500 on the tread 600 are all arranged along the normal direction of the annular groove 400 sidewall, guaranteeing the uniformity of tire tread rigidity. Simultaneously, it helps reduce tire noise, improve tire performance, reduce groove 500 damage, extend the service life of the steel sheet 300, reduce repair costs, and improve the tire's appearance quality.

[0050] The following will combine Figures 4 to 13 The preparation mold for tire tread grooves disclosed in the embodiments of this application will be explained and described in detail.

[0051] Among them, such as Figure 4As shown, the support surface 100 of the mold can fit against the tread 600, and the annular groove 400 on the tread 600 can be formed by the annular groove protrusion 200 provided on the support surface 100. Meanwhile, as... Figure 5 , Figure 8 and Figure 11 As shown, the steel sheet 300 has a first cutting portion 301 and a second cutting portion 302 disposed opposite to each other. The first cutting portion 301 is disposed along the normal direction of the protruding sidewall 201 of the annular groove protrusion 200 and is connected to the protruding sidewall 201 of the annular groove protrusion 200 so that the slot 501 of the cutting groove 500 can be formed through the first cutting portion 301, and the slot 501 of the cutting groove 500 is disposed along the normal direction of the sidewall of the annular groove 400. The second cutting portion 302 is disposed intersecting with the support surface 100 so that the second cutting portion 302 can be disposed intersecting with the support surface 100. The cutting section 302 forms a sipe 500, which allows the openings 501 of the sipe 500 on the tread 600 to be arranged along the normal direction of the sidewall of the annular groove 400. This ensures the uniformity of the tire tread rigidity, improves the tire's wear resistance, and reduces the risk of the tread pattern on both sides of the annular groove 400 and the openings 501 of the sipe 500 to penetrate each other. This helps to reduce tire noise, improve tire performance, reduce sipe 500 damage, extend the service life of the steel sheet 300, reduce repair costs, and improve the tire's appearance quality.

[0052] In some embodiments, such as Figure 8 and Figure 9 As shown, one end of the steel sheet 300 away from the protruding sidewall 201 of the annular groove protrusion 200 is twisted along the extending direction of the annular groove protrusion 200 to form a first cutting portion 301 and a second cutting portion 302. Optionally, the end of the steel sheet 300 connected to the protruding sidewall 201 of the annular groove protrusion 200 and the end of the steel sheet 300 away from the protruding sidewall 201 of the annular groove protrusion 200 can be rotated in opposite directions along the extending direction of the annular groove protrusion 200, so that the first cutting portion 301 can be arranged along the normal direction of the protruding sidewall 201 of the annular groove protrusion 200, and the second cutting portion 302 can be arranged along the normal direction of the support surface 100, thereby making the included angle between the entire sipe 500 formed by the steel sheet 300 and the tread 600 90°, as shown. Figure 10 As shown, this ensures uniform rigidity of the tire tread blocks, reduces tire noise during driving, and improves tire performance. It should be noted that the extension direction of the annular groove protrusion 200 is parallel to the tire's circumferential direction when the mold is fitted to the tire.

[0053] In the above embodiments, the steel sheet 300 can be prepared by using a 3D stamping process to form a twisted surface in which one end of the steel sheet 300 away from the protruding sidewall 201 of the annular groove protrusion 200 is twisted along the extension direction of the annular groove protrusion 200.

[0054] In some embodiments, such as Figure 5 and Figure 6 As shown, the steel sheet 300 can be bent along the extending direction of the annular groove protrusion 200 at the intersection of the protruding sidewall 201 of the annular groove protrusion 200 and the supporting surface 100 to form a first cutting portion 301 and a second cutting portion 302. Optionally, the steel sheet 300 can be bent around the intersection of the protruding sidewall 201 of the annular groove protrusion 200 and the supporting surface 100 and toward the extending line of the steel sheet 300 away from the supporting surface 100, so that the first cutting portion 301 can be arranged along the normal direction of the protruding sidewall 201 of the annular groove protrusion 200, thereby allowing the groove 501 of the sipe 500 formed by the first cutting portion 301 of the steel sheet 300 to have an angle of 90° with the tread 600, such as... Figure 7 As shown, this ensures uniform rigidity of the tire tread blocks, reduces tire noise during driving, and improves tire performance.

[0055] In some embodiments, such as Figure 11 and Figure 12 As shown, the steel sheet 300 can also be partially twisted so that the first cutting part 301 can be arranged along the normal direction of the protruding sidewall 201 of the annular groove protrusion 200, that is, the connection end of the steel sheet 300 and the protruding sidewall 201 of the annular groove protrusion 200 and the surrounding area rotate toward the extension direction of the annular groove protrusion 200. Optionally, for ease of understanding, the part of the steel sheet 300 that is twisted is defined as the twisting segment 303. The twisting segment 303 can be the connection end of the steel sheet 300 and the protruding sidewall 201 of the annular groove protrusion 200, i.e., the intersection of the protruding sidewall 201 of the annular groove protrusion 200 and the support surface 100, extending to a predetermined distance from the end of the steel sheet 300 away from the protruding sidewall 201 of the annular groove protrusion 200. The predetermined distance can be 4mm to 6mm. Thus, the twisting segment 303 of the steel sheet 300 can rotate in the extending direction of the annular groove protrusion 200, so that the first cutting part 301 can be set along the normal direction of the protruding sidewall 201 of the annular groove protrusion 200. This allows the groove 501 of the blade groove 500 formed by the first cutting part 301 of the steel sheet 300 to have an angle of 90° with the tread 600. Figure 13 As shown, this ensures uniform rigidity of the tire tread blocks, reduces tire noise during driving, and improves tire performance.

[0056] As can be seen from the above embodiments, when the steel sheet 300 in the above embodiments is used for embedding, at least three points can be set along the normal direction of the support surface 100 in the extension direction of the annular groove protrusion 200, thereby ensuring the uniformity of the formed groove 500, improving the rigidity of the tire tread block, reducing tire noise during driving, and improving tire performance. At the same time, the angle between the steel sheet 300 and the support surface 100 during embedding can be 90°±2°.

[0057] In some embodiments, such as Figure 4As shown, the steel sheet 300 may include multiple steel sheets, and each steel sheet 300 is spaced apart on the raised sidewall 201 of the annular groove protrusion 200 to form multiple sipes 500 on the tire tread block.

[0058] This application also discloses a tire tread structure, which is prepared using the preparation mold for tire tread grooves disclosed in the above embodiments. Therefore, it possesses all the technical effects of the groove 500 prepared by the above preparation mold, and will not be repeated here. The tire tread structure may include annular grooves 400 and grooves 500, and the annular grooves 400 may be disposed on the tire tread 600 along the circumferential direction of the tire.

[0059] The sipe 500 can be provided on one side of the annular groove 400, and the sipe 500 is connected to the annular groove 400. The groove opening 501 of the sipe 500 can be set along the normal direction of the annular groove sidewall 401 to ensure the uniformity of tire tread rigidity, improve tire wear resistance, and reduce the risk of the tread pattern on both sides of the annular groove 400 and the groove opening 501 of the sipe 500 penetrating each other, which helps to reduce tire noise and improve tire performance. Furthermore, the angle between the sidewall of the sipe 500 and the tread 600 in the depth direction can be 90°±2°.

[0060] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather not listed.

[0061] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mold for preparing tire tread grooves, characterized in that, include: A support surface (100) is provided for contacting the tread (600); A ring groove protrusion (200) is disposed on the support surface (100) and is used to form a ring groove (400) on the tread (600). A steel sheet (300) has a first cutting portion (301) and a second cutting portion (302) disposed opposite to each other. The first cutting portion (301) is disposed along the normal direction of the protruding sidewall (201) of the annular groove protrusion (200) and is connected to the protruding sidewall (201) of the annular groove protrusion (200). The first cutting portion (301) is used to form the groove (501) of the knife groove (500). The second cutting portion (302) intersects with the support surface (100) and is used to form the knife groove (500).

2. The preparation mold according to claim 1, characterized in that, The steel sheet (300) is bent along the extension direction of the annular groove protrusion (200) at the intersection of the protruding sidewall (201) of the annular groove protrusion (200) and the supporting surface (100) to form the first cutting portion (301) and the second cutting portion (302).

3. The preparation mold according to claim 1, characterized in that, The steel sheet (300) is twisted at one end away from the protruding sidewall (201) of the annular groove protrusion (200) along the extension direction of the annular groove protrusion (200) to form the first cutting portion (301) and the second cutting portion (302), and the second cutting portion (302) is arranged along the normal of the support surface (100).

4. The preparation mold according to claim 3, characterized in that, The steel sheet (300) is a twisted surface prepared by 3D stamping.

5. The preparation mold according to claim 1, characterized in that, The steel sheet (300) has a torsion section (303), which is a position where the connection end of the steel sheet (300) and the protruding sidewall (201) of the annular groove protrusion (200) extends to a predetermined distance away from the protruding sidewall (201) of the annular groove protrusion (200) at a predetermined distance of 4mm to 6mm.

6. The preparation mold according to claim 1, characterized in that, The steel sheet (300) is provided at least three points along the normal direction of the support surface (100) in the extension direction of the annular groove protrusion (200).

7. The mold for preparation according to claim 1, characterized in that, The angle between the steel sheet (300) and the supporting surface (100) is 90°±2°.

8. The preparation mold according to any one of claims 1 to 7, characterized in that, The steel sheet (300) includes a plurality of steel sheets, and each steel sheet (300) is spaced apart on the raised sidewall (201) of the annular groove protrusion (200).

9. A tire tread pattern structure, prepared using a mold for preparing tire tread grooves as described in any one of claims 1 to 8, characterized in that, include: A circumferential groove (400) is provided on the tread (600) of the tire along the circumferential direction of the tire; A cutting groove (500) is provided on one side of the annular groove (400) and the cutting groove (500) is connected to the annular groove (400). The groove opening (501) of the cutting groove (500) is provided along the normal direction of the annular groove sidewall (401) of the annular groove (400).

10. The tire tread structure according to claim 9, characterized in that, The sidewall of the sipe (500) forms an angle of 90°±2° with the tread (600) in the depth direction.

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