A pin-type barrel and an extruder

By optimizing the pin arrangement structure of the pin-type barrel, the problem of poor plasticization of the tread compound was solved, the tread compound's viscosity was improved, and the finished tire quality and safety were enhanced.

CN224510358UActive Publication Date: 2026-07-17SAILUN GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SAILUN GRP CO LTD
Filing Date
2025-07-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing technology, the plasticization effect of the tread compound is not good during the extrusion process, resulting in insufficient surface adhesion of the compound in the shoulder area of ​​the tread, which easily leads to air bubbles or poor adhesion, affecting the quality and safety of the finished tire.

Method used

Design a pin-type barrel, including a feeding section, a plasticizing section and an extrusion section, which adopts a structure of alternating long pins and blind pins. Optimize the pin arrangement to improve the shearing and plasticizing effect of the rubber compound, reduce the Mooney value and enhance the viscosity of the rubber compound.

Benefits of technology

By optimizing the pin arrangement, the plasticizing effect of the rubber compound was improved, the tread compound's adhesion was enhanced, air bubbles and poor bonding were reduced, and the quality and safety of the finished tires were improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a kind of pin type machine cylinder and extruder, pin type machine cylinder includes cylinder, and cylinder is provided with several pin rows along its length direction, pin row includes the several pins arranged along the circumference of cylinder, pin includes long pin and blind pin, long pin end extends to cylinder inner cavity, and blind pin end is flush with cylinder inner wall;Along by feeding port to glue outlet direction, cylinder sequentially includes feeding section, plasticizing section and extrusion section, long pin and blind pin interval arrangement structure are used to the pin row in feeding section and extrusion section, long pin interval arrangement structure is used to the pin row in plasticizing section, the utility model can solve the technical problem that the quality and safety of finished product are affected due to the poor plasticizing effect of rubber compound, leading to poor bonding of composite interface in prior art.
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Claims

1. A pin barrel characterized by, The device includes a cylindrical body, on which a plurality of pin rows are arranged along its length. Each pin row includes a plurality of pins arranged along the circumference of the cylindrical body. The pins include long pins and blind pins. The ends of the long pins extend into the inner cavity of the cylindrical body, and the ends of the blind pins are flush with the inner wall of the cylindrical body. Along the direction from the feeding port to the dispensing port, the cylinder sequentially includes a feeding section, a plasticizing section, and an extrusion section. The pin rows in the feeding section and the extrusion section adopt a structure of alternating long pins and blind pins, while the pin rows in the plasticizing section adopt a structure of alternating long pins.

2. The pin-type barrel according to claim 1, characterized in that, The number of pin rows in the feeding section is no less than the number of pin rows in the extrusion section, and the number of pin rows in the plasticizing section is greater than the number of pin rows in the feeding section.

3. The pin-type barrel according to claim 1, characterized in that, The total number of pins in each pin row is equal.

4. The pin barrel of claim 3, wherein, Several pins are arranged in a row with the pins aligned.

5. The pin barrel of any of claims 1-4, wherein, The cylinder is provided with a pin hole, the pin is sunk into the pin hole and locked by a locking device.

6. The pin barrel of claim 5, wherein, The feeding section is provided with 3 rows of pins, the plasticizing section is provided with 5 rows of pins, and the extrusion section is provided with 2 rows of pins.

7. The pin barrel of claim 5, wherein, The feeding section is provided with 2 rows of pins, the plasticizing section is provided with 7 rows of pins, and the extrusion section is provided with 1 row of pins.

8. An extruder characterized by, Includes the pin-type barrel as described in any one of claims 1-7.