Modular Conveyor Belt Sprocket Positioning for Hinge Gap Cleaning
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Solution Overview
Problem
Modular conveyor belts in the food industry face challenges in cleaning due to trapped residual food matter in the hinge areas, exacerbated by sprocket teeth that cover these areas, making it difficult to access and clean.
Innovation Solution
The belt module and sprocket combination positions sprockets between link pairs, leaving hinge gaps uncovered for cleaning, with a center transverse rib or protuberance for tracking to prevent sideways movement and ensure proper engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sprockets are positioned to engage the hinge area for driving the belt, then proper sprocket engagement and belt tracking are achieved, but the hinge gaps become covered and inaccessible for cleaning
Solution Approach 1:
The hinge structure is segmented into link pairs with spacing that allows sprockets to engage between them rather than over them. This segmentation creates distinct functional zones: sprocket engagement areas and cleaning accessible hinge gaps, resolving the contradiction between reliable driving and cleanability.
Solution Approach 2:
The sprocket engagement is moved from a vertical positioning (over the hinge) to a horizontal positioning (between link pairs). This dimensional change allows the hinge gaps to remain exposed and accessible for cleaning while maintaining proper sprocket engagement for belt tracking.
2Stability of the object's composition
If sprocket teeth press against the hinge area for driving, then belt tracking is maintained, but residual food matter is pressed into the hinge gaps making cleaning difficult
Solution Approach 1:
The harmful function of pressing food matter into hinge gaps is extracted by relocating the sprocket engagement point away from the hinge area. The sprockets now engage between link pairs, eliminating the pressing action on hinge gaps and preventing food residue entrapment while maintaining belt tracking through the center transverse rib or protuberance.
Solution Approach 2:
The center transverse rib or protuberance acts as an intermediary element that provides the necessary tracking function without requiring direct sprocket-to-hinge contact. This mediator allows belt tracking to be maintained while keeping the hinge area exposed and free from pressed-in food matter.
3Stability of the object's composition
If additional guide teeth are added to sprockets for lateral guidance, then belt tracking is improved, but cleaning becomes more difficult due to increased complexity
Solution Approach 1:
The guide teeth are extracted from the sprocket structure and their function is transferred to the center transverse rib or protuberance on the belt. This simplification removes the cleaning obstacles created by additional teeth while maintaining lateral guidance capability through the rib structure that cleaning fluids can access.
Solution Approach 2:
The center transverse rib serves as an intermediary that provides lateral guidance functionality without the complexity of additional sprocket teeth. This mediator element is easily accessible to cleaning fluids and eliminates the cleaning difficulties associated with complex sprocket structures.
Data Source
Figure 1A~1B
Figure 2A
Figure 2B
AI summary
A modular conveying system with sprockets (55) engages the modules (100) such that they do not cover any link gaps but are positioned between the link gaps. The module (100) is characterized by link structures having link pairs (114, 115, 124, 127) that are spaced apart sufficiently at a distance to allow the sprockets (55) to be located between the link pairs (114, 115, 124, 127). Positioning the sprockets (55) between the link pairs (114, 115, 124, 127) leaves the hinge gaps uncovered and thus allows free access to the hinge gap for cleaning.