Curved Tire Flash Cutting Tool for Automatic Burr Removal

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing methods for removing excess rubber from tire vulcanization, such as manual removal with a V-shaped knife, are inefficient and can cause tire damage, noise emissions, and poor tire seating on the rim.

Innovation Solution

A cutting tool with a bracket for a removable cutting insert, featuring a curved design that allows the tool to slide on the tire and cut the vulcanization ridge without pushing it away, thereby preventing distortion and allowing for effective automatic detection and removal of ridges.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If manual removal with a V-shaped knife is used, then the cutting action can be performed, but the tire can be damaged and noise emissions increase

Engineering Contradiction:
Improvecutting capabilityVSAvoidtire damage and noise
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The cutting tool features a curved body that allows it to slide along the tire surface rather than push against it. This curved geometry enables the tool to follow the tire contour and cut the flash material efficiently without causing damage or excessive noise, directly resolving the contradiction between cutting capability and harmful effects.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Ease of operation

If the cutting tool pushes the burr away, then the cutting action is simpler, but the burr becomes distorted

Engineering Contradiction:
Improvecutting action simplicityVSAvoidburr integrity
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The curved body of the cutting tool enables it to slide along the tire surface, pulling the flash material through the cutting edges rather than pushing it away. This sliding motion maintains burr integrity while keeping the operation simple, resolving the contradiction between ease of operation and manufacturing precision.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Productivity

If automatic burr removal is implemented, then productivity increases, but device complexity increases

Engineering Contradiction:
Improveburr removal efficiencyVSAvoidautomation system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The cutting tool is designed to be self-guiding through its curved geometry, which naturally follows the tire contour and positions the cutting edges correctly. This self-service capability enables automatic burr removal without requiring complex positioning systems, resolving the contradiction between productivity and device complexity.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3954533B1Cutting device and method for cutting the flash of a tire
Publication Date: 2025.04.02 CONTINENTAL REIFEN DEUTSCHLAND GMBH
  • EP3954533B1 patent drawingFigure 1(a)~2(b)
  • EP3954533B1 patent drawingFigure 3~5
  • EP3954533B1 patent drawingFigure 6~7

AI summary

Cutting tool and cutting method for the vulcanization burr of the tire, comprising a holder (2) for a removable cutting insert (4) and said removable cutting insert; in which the holder has an elongated body with a first part (2a) for attaching the tool to a robot arm, a second curved part (2b) and a third part (2c) for sliding on the tire and cutting off the burr; in which the second part connects the first part and the third part; in which the third part has a recess for receiving the removable cutting insert (4); in which the removable cutting insert has two V-shaped cutting edges for cutting the burr between said cutting edges; in which the apex of the "V" is oriented in a direction along the holder, opposite the first part.