Vulcanizing Press Loading Carriage Eliminates Rubber Strip Friction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vulcanizing press systems for tire retreading suffer from significant material loss due to frictional forces when loading raw rubber strips, leading to inefficiencies and economic limitations.
Innovation Solution
A loading device with a movable loading carriage equipped with endlessly circulating conveyor belts allows for tray loading, synchronizing the conveyor belt speed with the carriage's movement to deposit raw rubber strips without friction, eliminating tensile forces and elongation, thereby reducing material loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If raw rubber strips are drawn into the press using a loading arm, then the loading process can be completed, but frictional forces cause elongation and constriction of the raw rubber strips, leading to material loss
Solution Approach 1:
A loading carriage with conveyor belts is introduced as an intermediary device between the raw rubber strips and the press. The conveyor belts transport the raw rubber strips onto the loading carriage without direct contact with the press molds, eliminating frictional forces during loading. The loading carriage then moves as a complete unit into the press, avoiding the tensile forces and elongation that occur when strips are drawn individually.
2Loss of substance
If a support arm is added to reduce frictional forces, then material loss is reduced, but the device complexity increases
Solution Approach 1:
The loading function and the support function are merged into a single loading carriage assembly. The conveyor belts are integrated into the loading carriage structure, allowing both the transport of raw rubber strips and the support during loading to occur within one unified device. This eliminates the need for separate support arms while maintaining the benefit of reduced frictional forces.
3Manufacturing precision
If raw rubber strips are loaded individually into press decks, then the loading process can be controlled, but tensile forces cause elongation and constriction of the strips
Solution Approach 1:
The raw rubber strips are loaded onto the conveyor belts of the loading carriage in advance, before the carriage enters the press. This preliminary loading action allows the strips to be positioned and secured without subjecting them to tensile forces during the actual pressing operation. The entire loading carriage assembly with its contents is then moved into the press as a single unit, maintaining manufacturing precision while eliminating material loss.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly reduces material loss by avoiding frictional forces and elongation during the loading process, enhancing the economic efficiency of the vulcanizing press system.
Implementation Method 1
the raw rubber strips, which can be very heavy, come into contact with the molds, so that considerable frictional forces arise between the raw rubber strips and the molds
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a vulcanizing press system for producing treads for retreading tires, comprising a vulcanizing press (1) having a press frame (2) and one or more press levels (3), in which treads having a tire tread pattern are pressed from raw rubber strips, and further comprising at least one charging device (6) for charging the vulcanizing press (1) with the raw rubber strips. Said system is characterized in that the charging device (6) comprises at least one charging cart (7) which can be moved in the longitudinal press direction and which, at one or more levels, comprises one or more loading trays (8), each having an endlessly revolving conveyor belt (9), wherein the charging cart (7) containing the raw rubber strips arranged on the loading trays (8) can be moved in the working direction (R) into the vulcanizing press (1).