Modular Conveyor Hinge-Rod Tool for Damage-Free Belt Servicing
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Solution Overview
Problem
Existing methods for removing and inserting hinge rods in modular conveyor belts often result in damage to the rods or belts due to the use of standard tools that require grasping, prying, and pulling, which can lead to contamination of conveyed products.
Innovation Solution
A specialized hinge-rod tool with pivotable jaws and a split platform designed to grasp and insert hinge rods, featuring a lift hook for belt access and dimples to prevent slipping, reducing damage and ensuring smooth insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If standard tools like pliers are used to grasp and pull hinge rods, then the hinge rods can be removed from the belt, but damage occurs to the hinge rod or belt edge during grasping, prying, and pulling
Solution Approach 1:
The tool divides the hinge rod engagement into separate functional zones: the V-shaped groove provides controlled grasping at one location, while the flat surface provides a fulcrum point at another location. This segmentation allows prying forces to be applied at the fulcrum rather than directly at the grasping point, preventing damage to the hinge rod during removal.
Solution Approach 2:
The tool introduces an intermediary structure (the belt engagement surface with V-shaped groove and fulcrum) between the user's pulling force and the hinge rod. This intermediary mediates the force application by providing a controlled engagement point and leverage mechanism, preventing direct damage to the hinge rod while still enabling effective removal.
2Productivity
If heavy forces or impacts are used to push hinge rods into the belt during insertion, then the hinge rods can be inserted into the belt, but damage occurs to the hinge rod or belt
Solution Approach 1:
The tool performs preliminary alignment and positioning of the hinge rod using the V-shaped groove and platform structure before the actual insertion force is applied. The rod is pre-positioned and guided into the correct orientation, allowing insertion to proceed with minimal corrective forces and reducing the risk of damage during the insertion process.
Solution Approach 2:
The tool changes the application parameters of insertion force by distributing it through the platform structure rather than applying concentrated impacts. The flat surface and V-shaped groove provide controlled engagement that transforms heavy impact forces into controlled pushing forces, maintaining insertion productivity while protecting the hinge rod and belt from damage.
3Ease of operation
If the hinge rod is bent to clear rod-retention structure during removal, then the rod can be extracted from the belt, but damage occurs to the hinge rod or belt edge
Solution Approach 1:
The tool solves the spatial constraint problem by utilizing a second dimension - the fulcrum point on the belt surface. Instead of bending the rod in the same plane to clear retention structures, the tool provides a leverage point that allows the rod to be pried upward at an angle, clearing retention structures without requiring the rod to bend and maintain its straightness.
Data Source
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AI summary
A hinge-rod removal and insertion tool for opening and closing modular conveyor belts during installation and servicing. The tool is a pliers with jaws forming a split aperture. The jaws open to admit the end of the hinge rod of a modular conveyor belt. The jaws close to grasp the hinge rod so that it can be pulled from the belt. A head at the distal end of the jaws is used to push a hinge rod back into the belt. The tools have lift hooks to lift a section of belt to gain access to the ends of the hinge rods.