35 patents in this list

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Modern tire manufacturing requires precise control of rubber extrusion, where dimensional accuracy must be maintained within 0.1mm while processing materials at temperatures between 100-150°C. Current extruder systems face challenges with material consistency, temperature control, and production bottlenecks, particularly when handling multiple compound layers that require different processing conditions.

The fundamental challenge lies in balancing throughput speed with precise dimensional control while maintaining uniform material properties across complex geometrical profiles.

This page brings together solutions from recent research—including vertical extruder stack systems for consistent layering, temperature-controlled multi-outlet dies, and automated feeding mechanisms with integrated mixing capabilities. These and other approaches focus on improving production efficiency while maintaining the strict quality requirements of tire component manufacturing.

1. Vertical Extruder Stack System with Unified Main Head for Consistent Rubber Layering

MESNAC CO LTD, QINGDAO MESNAC MACHINERY & ELECTRIC ENGINEERING CO LTD, 2024

An extrusion system for efficiently producing rubber products by stacking multiple extruders vertically rather than horizontally. The extruders are mounted on a frame that moves as a unit. This allows all extruders to be aligned simultaneously for consistent rubber layering. The extruder stack has a main extruder head in front that collects the extruded rubber from multiple extruders below. This avoids the time-wasting and space-inefficient multiple extruder head movements in horizontal layouts. The main head has a tire outlet that connects to all extruders' outlets.

2. Extrusion Device with Perpendicular Sieve Element for Elastomeric Material Production

VMI HOLLAND B V, VMI HOLLAND BV, 2024

Extrusion device for producing continuous strips of elastomeric material, like rubber for tire applications, with increased output capacity without compromising performance. The device has a screw extruder, gear pump, and screen head to filter impurities. The screen head has a perpendicular sieve element instead of a flat screen. This allows higher axial forces on the screen without bending or damage as the screen size increases with device scaling.

3. Extruder with Automated Feeding and Mixing Mechanism for Continuous Rubber Tire Production

HEFEI TIANYU BOOEN TECH CO LTD, HEFEI TIANYU BOOEN TECHNOLOGY CO LTD, 2024

Extruder for rubber tire production that improves efficiency and quality by automating feeding and mixing of the raw materials. The extruder has a fixed feeding bin connected to the extruder body, and a movable collection bin connected to the base. A mechanism allows the collection bin to slide horizontally into the feeding bin when filled. This eliminates manual feeding and adjustment of the feeding bin. The collection bin also has a mixing mechanism with a rotating shaft. This mixes the materials before feeding them into the fixed bin. The extruder also has an automated driving mechanism to move horizontally without stopping the extrusion process. This improves efficiency by allowing loading and unloading without stopping extrusion.

4. Rubber Extruder with Hinged Feed Box Cover for Enhanced Mobility and Stability

JIAONAN HUALU RUBBER PRODUCTS CO LTD, 2023

Rubber extruder for tire production that allows easy movement and stable operation. The extruder has a base, extruding barrels fixed to the base, and a motor with screw to push material into the barrels. The barrels have feed boxes and discharge pipes. The key innovation is a hinged cover on the feed box that can swing open for filling material. This allows the extruder to be moved by simply lifting the open cover and swinging the barrel assembly. The closed cover provides stability during extrusion.

5. Extrusion Die with Multi-Outlet Glue Distribution and Variable Pitch Screw Channels for Tire Sidewall Manufacturing

DOUBLE COIN GROUP ANHUI HUILI TYRE CO LTD, DOUBLE COIN GROUP HUILI TYRE CO LTD, 2023

Sidewall production extrusion die and extruder for tire sidewall manufacturing that addresses the issue of high extrusion temperature degrading tire performance. The die has three glue outlets, with the upper and lower outlets connected to the same middle outlet. This allows outputting the same glue from the upper and lower while a different glue comes from the middle. The extruder has separate channels for each outlet. The screw channels have a decreasing pitch closer to the die end. This allows lower temperature glue from the middle outlet to mix with hotter glue from the upper and lower outlets, reducing overall extrusion temperature.

CN218315123U-patent-drawing

6. Screw Extruder with Integrated Internal and External Heating for Uniform Tire Rubber Processing

山东银宝轮胎集团有限公司, SHANDONG YINBAO TYRE GROUP CO LTD, 2022

A tire rubber extruder design with integrated internal and external heating to ensure uniform melting and extrusion of tire rubber. The extruder uses screw extrusion with a central shaft and external heaters around the extrusion box. The central shaft has internal heating while the external heaters surround the box. This integrated heating with screw motion provides consistent rubber melting and extrusion.

7. Rubber Extruder with Adjustable Interface and Variable Feed Path Geometry

SUMITOMO RUBBER IND, SUMITOMO RUBBER IND LTD, 2022

Rubber extruder for molding tire parts that reduces bank growth and improves rubber supply stability. The extruder has a hopper, screw, cylinder, and interface between the hopper and cylinder opening. The interface has a connecting port overlapping the opening front and a main body closing the rear. The main body covers 40-60% of the opening. This configuration allows the bank to shrink as fresh rubber replaces it since the main body narrows the feed path. It also prevents blockages as the bank grows. The interface position can adjust. The connecting port shape is rectangular, trapezoidal, or pentagonal.

8. Extrusion Device with Integrated Stirring Chamber and Sealed Hopper for Solid Tire Production

QINGDAO SHUOFENG RUBBER & PLASTIC PRODUCTS CO LTD, 2022

Extrusion device for producing solid tires that improves mixing and prevents damage to the feeding hopper. The device has a feeding hopper with a stirring chamber below it. The stirring mechanism, consisting of a motor with a shaft passing through the hopper, agitates the tire rubber inside the hopper. This ensures even mixing of the raw material before it enters the extruder. The hopper is also sealed and connected to the extruder body to prevent odor volatilization. This prevents raw material from entering the extruder before stirring.

9. Horizontal Tire Tread Extrusion System with Parallel Barrel Configuration for Multi-Component Co-Extrusion

COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN & CIE, 2021

A tire tread extrusion system that eliminates the need for foundation pits by orienting the extrusion barrels horizontally instead of vertically. The system uses multiple extruders to co-extrude tire treads made of multiple components. The horizontal barrels are positioned parallel to the ground instead of vertically, allowing the extruded treads to be removed without pits underneath. The system can still rotate and twist the treads as needed after extrusion.

10. Self-Feeding Tire Extruder with Integrated Compression Mechanism for Uninflated Tires

HU ZHIYONG, 2021

Self-feeding tire extruder for processing uninflated tires that saves storage space and facilitates tire collection compared to conventional tire extrusion machines. The extruder has a bottom plate with a motor, a desktop connected to the bottom plate, an extrusion mechanism on the bottom plate connected to the motor, and a feeding mechanism on the desktop. The extruder allows uninflated tires to be fed into the machine without requiring an external source of compressed air to inflate them first. The extrusion mechanism compresses the tire as it is fed through, allowing it to be processed without inflation.

CN112549599A-patent-drawing

11. Extruder for Tire Production with Symmetrical Non-Return Device and Cone-Shaped Stopper Configuration

YANCHENG JINGZE NEW MATERIAL TECH CO LTD, YANCHENG JINGZE NEW MATERIAL TECHNOLOGY CO LTD, 2021

A new type of extruder for tire production that improves feeding efficiency and extrusion effectiveness compared to existing tire extrusion equipment. The extruder has a box body with a fixed plate, extrusion nozzle, and discharge port. A non-return device on the lower end of the discharge port prevents backflow. The non-return device has a ring, pipe, and sliding connector. The ring, pipe, and connector are arranged symmetrically with fixed rods. The connector slides inside a support ring. One end connects to a limit block and the other penetrates the ring to connect to a cone-shaped stopper. The stopper has a sealing gasket. The cone shape and gasket prevent sol backflow. The sliding connector, fixed rods, and cone stopper configuration facilitates sol flow and extrusion.

CN212636517U-patent-drawing

12. Rubber Extrusion Equipment with Integrated Roller-Based Flattening and Adjustable Conveyor System

ZHEJIANG XIANGQI TECH CO LTD, ZHEJIANG XIANGQI TECHNOLOGY CO LTD, 2020

Rubber extrusion equipment with integrated material flattening and conveying to improve efficiency and reduce costs. The equipment has a frame with a flattening frame containing rollers to flatten the extruded rubber. A conveyor belt group raises and lowers to move the flattened rubber. This allows automated, mechanized handling of the extruded rubber without manual intervention.

CN211709956U-patent-drawing

13. Rubber Tire Material Extruder with Rotating Distribution Roller and Adjustable Feed Rate Control

JIANGXI VIMIA TYRE CO LTD, 2020

A new type of rubber tire material extruder with improved feeding and feeding rate control to prevent material accumulation and excessive supply during extrusion. The extruder has a feeding hopper with a rotating distribution roller and restrictor roller. The hopper has a drive assembly and motor that rotates the distribution roller to discharge material through feed openings. A stopper blade covers the openings periodically to control the feed rate. This prevents material buildup in the hopper and feed port. The feeding rate can be adjusted by the motor speed.

14. Extrusion Apparatus with Threaded Rod and Integrated Heating for Rubber Processing

SHANDONG SHENGSHITAILAI RUBBER SCIENCE & TECH CO LTD, SHANDONG SHENGSHITAILAI RUBBER SCIENCE & TECHNOLOGY CO LTD, 2020

An extrusion equipment for tire production that prevents cooling and hardening of the rubber during extrusion. The equipment has a sliding groove in a cylindrical block that the rubber passes through. A sliding rod with a threaded groove moves in the groove. A threaded rod with a threaded groove attaches to the sliding rod. A bevel gear on one end of the threaded rod meshes with a bevel gear on the motor. This setup allows the rubber to be pushed through the sliding groove by the threaded rod rotating. An electric heating wire inside the cylindrical block heats the rubber as it moves.

15. Extrusion System with Movable Extruder Assembly and Multi-Outlet Die for Tire Production

MESNAC CO LTD, 2019

Extrusion system for tire production that improves efficiency and reduces footprint compared to conventional systems. The system has a movable extruder assembly with multiple extruders and a front die. The extruders can be selected and moved to process different rubber compounds without switching between embryos. This eliminates the need for frequent extruder repositioning in conventional systems. The die has outlets connected to multiple extruders for direct processing of embryos.

CN209454124U-patent-drawing

16. Twin Screw Extruder System with Variable Viscosity Handling and Modular Extrusion Heads for Elastomeric Compound Processing

PIRELLI TYRE SPA, 2019

Process and plant for producing elastomeric compounds like tire rubber that avoids premature vulcanization and curing during extrusion. The process involves feeding compounds with specific viscosities into a twin screw extruder and using different extrusion heads based on compound viscosity to prevent overheating and pressure. This allows handling compounds with wide viscosity ranges in the same extruder without vulcanization issues. The extruder has feed and relief openings, and the compound viscosity is calculated to set the feed rate and extrusion speed. This prevents overheating by limiting compound flow rate. The extrusion device has multiple supports for mounting different extrusion heads with rollers instead of a fixed die to reduce pressure.

17. Rubber Extrusion Device with Adjustable Die Head for Flow Path and Pressure Distribution Control

THE YOKOHAMA RUBBER CO LTD, 2019

Rubber extrusion device and manufacturing method to prevent unexpected bending of rubber extrudates. The device allows relative movement of the die head along the front end of the extrusion head to adjust the flow path and pressure distribution. This allows compensating for variations in rubber properties and extrusion conditions to prevent unexpected bending. The method involves mounting the die on the extrusion head and moving it relative to the head along the front end surface. This enables adjusting the die position to counteract any unwanted bending in the extruded rubber.

CN110167739A-patent-drawing

18. Extrusion Screw with Removable Working Ring for Material Property Adaptation

Compagnie Generale Des Etablissements Michelin, 2019

Device for extruding plastics, particularly elastomers used in tire manufacturing, with a screw that can adapt to different material properties without complex finger adjustments. The extrusion screw has a removable working ring near the end that modifies the gap between the screw and barrel. The ring can be swapped out based on the material being extruded to impose the right stress and homogenization in the gap. The ring can be mounted on the screw end or inside the barrel. It can also have crenulations for better mixture flow. This allows tailoring the extruder performance to match the material without expensive finger adjustments.

19. Rubber Tire Extruder with Cold Water Sleeves, Vacuum Pump, and Automated Screen Changer

青岛诺橡胶机械有限公司, 2019

Extruder for rubber tire production with improved cooling and filtering capabilities. The extruder has features like cold water sleeves, a circulating water pump, a vacuum pump, and an automated screen changer to enhance cooling, filtering, and cleaning efficiency. The cold water sleeves allow circulating water to be pumped through the extrusion barrel for cooling. A vacuum pump extracts air from the extrusion barrel to aid material flow. The automated screen changer allows filter screens to be changed without stopping production.

20. Rolling Device with Forming Drum and Pressure-Sensing Enclosure for Tire Building Machine

荣成荣鹰橡胶制品有限公司, 2018

Rolling device for a tire building machine used in solid tire production to improve tire quality and production efficiency. The device has a forming drum, roller barrel, and hydraulic push rod to compress the tire material. A cylinder with pressure sensor and baffles encloses the roller barrel. A display, processor, and voltage sensor are inside a frame. This allows monitoring and controlling the rolling pressure for consistent tire shape and compound distribution.

21. Volumetric Extrusion Assembly with Offset Inlet and Synchronized Interpenetrating Screw Mechanism

22. Extruded Rubber Extruder with Rotating Cylindrical Body and Variable Discharge Die Assembly

23. Extruder Cleaning Mechanism with Translational Frame and Auto-Locking Seal System

24. Tire Extruder Conveying Device with Angled Contact Rotating Roller and Adjustable Sliding Bracket

25. Mold Die with Separate Pre-Formers and Direct White Sidewall Rubber Passage for Tire Extrusion

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