Tire Trimming Device with Multi-Tool Selection for Non-Uniform Rubber Removal

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Solution Overview

Problem

Conventional tire-trimming methods struggle to efficiently and cleanly remove non-uniform spew and thin rubber films from tire surfaces during vulcanization, as they require complex control procedures and are limited by the use of a single type of cutter that cannot effectively handle varying rubber component forms.

Innovation Solution

A tire-trimming device equipped with a rotation mechanism, profile sensor, control unit, and movement mechanism that uses multiple types of trimming tools, allowing for real-time detection of tire profiles and positions to select the appropriate tool for each area, enabling precise and efficient removal of unnecessary rubber components without pre-defined profile data or control procedures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single type of spew cutter is used to trim spew on the tire land portion, then the trimming device is simple in structure, but it cannot cleanly remove all types of spew and thin rubber films formed on different tire surfaces

Engineering Contradiction:
Improveability to remove different types of rubber componentsVSAvoidnumber of trimming tools
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by equipping the trimming device with multiple types of trimming tools (including spew cutters for land portions and thin rubber film removers for groove portions) that can handle different types of rubber components. The control unit selects the appropriate tool type based on the detected tire surface location and rubber component type, enabling one device to perform multiple trimming functions effectively.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If conventional trimming methods are used that only target spew on land portions, then the control procedure is simple, but thin rubber films on groove portions cannot be removed

Engineering Contradiction:
Improvecoverage of trimming areasVSAvoidcontrol procedure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by providing different types of trimming tools for different locations on the tire surface. Spew cutters are used for land portions while thin rubber film removers are used for groove portions. The control unit determines the tire surface location based on detected data and selects the appropriate tool type, ensuring each location receives the specific trimming treatment it requires.

Inventive Principle:
Principle #3Local quality

3Manufacturing precision

If the form of spew is not uniform and differs depending on tire surface portion, then the trimming challenge increases, but using one type of cutter cannot address the variation

Engineering Contradiction:
Improvecleanliness of spew removalVSAvoidtool specification matching
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by providing different types of trimming tools for different locations on the tire surface. Spew cutters are used for land portions while thin rubber film removers are used for groove portions. The control unit determines the tire surface location based on detected data and selects the appropriate tool type, ensuring each location receives the specific trimming treatment it requires.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS11878482B2Tire-trimming device and method
Publication Date: 2024.01.23 THE YOKOHAMA RUBBER CO LTD
  • US11878482B2 patent drawing
  • US11878482B2 patent drawing
  • US11878482B2 patent drawing

AI summary

Provided are a tire-trimming device and method. The method includes: detecting a profile of a tire outer surface and a position thereof by using a profile sensor while rotating the tire; inputting data detected by the profile sensor into a control unit; when removing the unnecessary rubber components, selecting, from among a plurality of different types of the trimming tool, a trimming tool which is of a type set in the control unit in advance for use in a location on which the unnecessary rubber components are formed; moving the selected trimming tool and the tire relative to one another on the basis of the data detected by the profile sensor; and positioning a tip end section of the trimming tool along the detected profile of the tire outer surface.