Tire tread extrusion outer die with conductive rubber strip structure
By designing an outer groove for the tire tread with a conductive rubber strip structure, the problems of high equipment cost and difficult operation in the existing technology are solved, realizing the efficient production of conductive rubber tires, simplifying the production process, reducing equipment procurement and modification costs, and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TRIANGLE TIRE
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-14
AI Technical Summary
Existing tire production lines struggle to effectively extrude conductive rubber strips, resulting in high equipment procurement and modification costs, significant operational difficulties, and limitations on the development and production of new products.
Design a tire tread extrusion outer end with a conductive rubber strip structure. The outer end upper and lower plates are detachably connected and equipped with conductive rubber flow channels and guide grooves. The conductive rubber can be discharged by replacing the outer end plate, avoiding the need to increase the number of extruders or modify the equipment.
It simplifies the production process, reduces costs, improves production efficiency, enables rapid response to market demands, and enhances business profitability without requiring additional equipment or modifications to existing production lines.
Smart Images
Figure CN224116665U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tire production molds, specifically a tire tread extrusion mold with a conductive rubber strip structure. Background Technology
[0002] As is well known, extensive research on low rolling resistance and high wet grip in passenger car tires has led to the increasingly widespread and higher proportion of silica used in these tires. However, a high silica content in the tread significantly reduces the tire's conductivity, preventing static electricity generated during driving from being properly conducted to the ground, posing a safety hazard to passengers. To address this issue, some tire manufacturers have adopted five-component tread production lines with conductive rubber. This involves increasing the number of extruders and changing the pre-drill profiles to achieve the extrusion of treads with conductive rubber, ensuring the tire's conductivity. However, this approach not only significantly increases the equipment procurement costs for tire companies but also raises the operational complexity. It is understood that currently, most domestic tire manufacturers use three-component or four-component extrusion lines. The existing number of extruders and pre-drill profile designs cannot meet the extrusion requirements of treads with conductive rubber strips, which greatly limits the development and production of new products for tire companies. Summary of the Invention
[0003] To overcome the shortcomings of the existing technology, this utility model provides a tire tread extrusion outer die with a conductive rubber strip structure. It does not require increasing the number of extruders or adjusting other structural designs of the tire. Simply by changing the outer die plate, the production of a tire tread with a conductive rubber strip structure can be achieved.
[0004] The technical solution adopted by this utility model to solve its technical problem is: a tire tread with a conductive rubber strip structure is pressed outward, and a plate is provided. The plate is characterized in that the plate is composed of an outer opening upper plate and an outer opening lower plate that can be detachably connected. A tread cavity is provided in the middle position of the lower part of the outer opening upper plate. A vertical positioning groove is opened on the back of the plate. The positioning groove is connected to the tread cavity. A conductive rubber channel is inserted in the positioning groove. The conductive rubber channel divides the outer opening tread cavity into left and right sections. The upper end of the conductive rubber channel abuts against the upper end of the positioning groove. The lower end of the conductive rubber channel is a beveled surface. A vertically penetrating guide groove is provided in the conductive rubber channel. A vertical conductive rubber outlet communicating with the guide groove is opened in the middle of the front side of the conductive rubber channel.
[0005] The upper and lower outer-mouth plates are connected by bolts.
[0006] The conductive adhesive flow channel is perpendicular to the tread cavity.
[0007] The lower back side of the electro-adhesive flow channel is a beveled surface.
[0008] The beneficial effects of this invention are that for tire companies with only three- or four-component extrusion tread production lines, there is no need to purchase new equipment or modify existing equipment. Simply changing the outer tread pattern allows for the extrusion of treads with conductive rubber, significantly saving on equipment procurement and modification costs, simplifying the production process, reducing equipment adjustment and replacement time, and improving production efficiency. Simultaneously, it accelerates the development and production of new conductive rubber tires for various applications, helping companies respond quickly to market demands and improve their profitability. Attached Figure Description
[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0010] Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] Figure 2 This is a front view of the utility model.
[0012] Figure 3 This is a rear view of the present invention.
[0013] Figure 4 This is a top view of the present invention.
[0014] Figure 5 This is a schematic diagram of the conductive adhesive flow channel structure of this utility model.
[0015] Figure 6 Top view of the conductive adhesive flow channel of this utility model.
[0016] Figure 7 Side view of the conductive adhesive flow channel of this utility model.
[0017] In the diagram: 1. Upper outer plate, 2. Lower outer plate, 3. Conductive adhesive flow channel, 4. Positioning groove, 5. Bolt, 6. Tread cavity, 7. Conductive adhesive outlet. Detailed Implementation
[0018] This utility model includes a plate body comprising a detachably connected upper outer-mouth plate 1 and a lower outer-mouth plate 2. A tread cavity 6 is machined into the lower center of the upper outer-mouth plate 1. The upper outer-mouth plate 1 and the lower outer-mouth plate 2 are connected by two bolts 5, one on each side of the tread cavity 6, facilitating the machining of the tread shape and assembly by on-site operators. A 5mm*5mm*30mm vertical positioning groove 4 is formed on the back of both the upper outer-mouth plate 1 and the lower outer-mouth plate 2 for installing conductive adhesive channels 3. This positioning groove 4 intersects perpendicularly with the tread cavity 6, forming a cross-shaped interconnected structure.
[0019] The conductive adhesive channel 3 has a vertically penetrating guide groove, and a vertical conductive adhesive outlet 7 connected to the guide groove is provided in the center of its front side. The upper end of the conductive adhesive channel 3 abuts against the upper end of the positioning groove 4. The lower side of the back of the conductive adhesive channel 3 is a beveled surface to facilitate the inflow of conductive adhesive. The conductive adhesive enters through the beveled surface, flows upward along the guide groove, and flows out through the conductive adhesive outlet 7.
[0020] The conductive adhesive channel 3 is embedded in the vertical positioning groove 4, perpendicular to the tread cavity 6, and divides the tread cavity 6 into left and right sections.
[0021] During production, because the conductive adhesive flow channel is perpendicular to the tread cavity 6 and divides the tread cavity 6 into left and right sections, the tread adhesive enters the tread cavity 6 from the back of the die plate, bypassing the conductive adhesive flow channel 3. The conductive adhesive enters through the oblique cut surface of the conductive adhesive flow channel 3, flows upward along the rubber guide groove, flows out through the conductive adhesive outlet 7, and re-merges with the tread adhesive on the front of the tread cavity 6, thereby achieving the penetration of conductive adhesive through the tread.
Claims
1. A tire tread extrusion type with a conductive rubber strip structure, comprising a plate, characterized in that the plate... It consists of a detachable upper plate and a lower plate. The upper plate has a tread cavity in the middle of its lower part. A vertical positioning groove is opened on the back of the plate. The positioning groove is connected to the tread cavity. A conductive adhesive channel is inserted in the positioning groove. The conductive adhesive channel divides the tread cavity into left and right sections. The upper end of the conductive adhesive channel abuts against the upper end of the positioning groove. The lower end of the conductive adhesive channel is a beveled. A guide groove runs vertically through the conductive adhesive channel. A vertical conductive adhesive outlet is opened in the middle of the front of the conductive adhesive channel and is connected to the guide groove.
2. The tire tread extrusion outer opening type with conductive rubber strip structure according to claim 1, characterized in that... The upper and lower outer-mouth plates are connected by bolts.
3. The tire tread extrusion outer opening type with conductive rubber strip structure according to claim 1, characterized in that... The conductive adhesive flow channel is perpendicular to the tread cavity.
4. The tire tread extrusion outer opening type with conductive rubber strip structure according to claim 1, characterized in that... The lower back side of the electro-adhesive channel is beveled.