Conveying Belt Reinforcing Insert for Edge Tearing Prevention
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Solution Overview
Problem
Existing transport, driving, and pressing belts for grinding machines suffer from reduced useful life due to stress on longitudinal edges and connection regions, leading to tearing and uneven thickness, which affects their structural integrity and service life.
Innovation Solution
A three-layer belt design is implemented by arranging transverse edges in abutting relationship and adding a second belt material centrally, covering up to 50% of the first belt's width, with folded longitudinal edges embedding the second material and ensuring uniform thickness and high tensile strength, optionally reinforced with fibers or wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transverse edges are connected by overlapping and bonding sheet, then continuous belt is formed, but belt thickening occurs which causes problems
Solution Approach 1:
The belt connection is segmented into multiple layers: the first belt material forms the base layer, the bonding sheet creates an intermediate bonding layer, and the second belt material forms a reinforcing top layer. This segmentation allows each layer to perform its specific function - the bonding sheet provides adhesion while the second belt material provides structural reinforcement without excessive thickening.
Solution Approach 2:
The belt connection uses a composite structure combining different materials: the first belt material (woven textile), the bonding sheet (adhesive material), and the second belt material (reinforcing material). This composite approach allows optimization of each material for its specific function, achieving both strong bonding and controlled thickness.
2Reliability
If longitudinal edges are folded down and connected, then belt continuity is achieved, but the connection region becomes stressed above average leading to limited useful life
Solution Approach 1:
The longitudinal edges are folded down and connected in advance during manufacturing, creating a pre-reinforced connection region. The second belt material is positioned to cover and reinforce the connection region before the belt enters service, so that when stresses occur during use, the reinforcement is already in place to distribute and mitigate the stresses.
Solution Approach 2:
The second belt material is strategically positioned to provide localized reinforcement at the connection region where stresses are highest. This local quality enhancement ensures that the critical connection area has superior strength and durability compared to the rest of the belt, directly addressing the weakness at this specific location.
3Reliability
If transverse edges are connected by rivet fastening, then continuous belt is formed, but irregularities are transferred to workpiece surface
Solution Approach 1:
The bonding sheet acts as an intermediary layer between the first and second belt materials, providing a smooth bonding interface. This intermediary layer distributes loads evenly and prevents direct transmission of irregularities from the connection region to the belt surface, thereby maintaining surface finish quality while achieving continuous belt formation.
4Strength
If second belt material covers 50% of first belt width, then tensile strength is enhanced, but belt structure becomes more complex
Solution Approach 1:
The second belt material covers only 50% of the first belt material's width, providing localized reinforcement where it is most needed - at the connection region and extending partially along the belt. This partial coverage approach enhances tensile strength effectively while avoiding the complexity and material waste of complete double-layer construction throughout the entire belt.
Data Source
AI summary
A transport, driving or pressing belt, comprising at least one belt material having a lower and an upper face limited by two longitudinal edges and two transverse edges running obliquely with respect to the main extension direction of the belt, the belt material being closed and the longitudinal edges being folded down, and a method for manufacturing a transport, driving or pressing belt. To ensure high tensile strength over the complete belt length and avoid an edge tearing of the first belt material at the longitudinal edges, the transverse edges of a first belt material lie against each other in abutting relationship, and a second belt material is arranged centrically on the first belt material at least in the region of the transverse edges. The second belt material here nearly covers a width of 50% of the first belt material and is centrically glued with the first belt material.