Long Material Conveying via Pinch Roller and Feed Bar
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Solution Overview
Problem
Existing long-material conveying and positioning apparatuses either require a guide rail along the entire conveying table, limiting lateral material entry, or cannot convey materials beyond the pinch rollers, resulting in unworkable portions.
Innovation Solution
A long-material conveying and positioning apparatus that combines a pinch roller apparatus with a feed bar device, allowing lateral material entry from any side and enabling continued conveyance by switching to the feed bar for stable positioning and cutting, eliminating the need for a guide rail and reducing unworkable material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a guide rail is provided over the entire length of the conveying table, then the carriage can slide stably toward the working machine, but the long material cannot be laterally carried in from the guide rail side
Solution Approach 1:
The conveying system is divided into two independent segments: a guide rail for carriage movement and a feed bar for material conveyance. This segmentation allows the guide rail to provide stable carriage guidance while the feed bar enables lateral material entry from any side without interfering with the carriage mechanism.
Solution Approach 2:
The feed bar acts as an intermediary device that transfers the long material from the lateral entry point to the working machine. It mediates between the material source and the carriage system, allowing material conveyance without requiring the carriage to move laterally or the guide rail to be removed.
2Adaptability or versatility
If pinch rollers are used to convey the long material, then lateral material entry from any side is enabled, but the long material cannot be conveyed after the rear end portion passes the pinch rollers
Solution Approach 1:
The system ensures continuous conveyance of the entire long material by transitioning from pinch roller conveyance (for the portion passing through the rollers) to feed bar conveyance (for the remaining portion). This continuous action eliminates the unworkable portion problem by ensuring every part of the material can be conveyed to the working position.
Solution Approach 2:
The feed bar serves as an intermediary conveyance mechanism that takes over from the pinch rollers. It extends the conveyance capability beyond the pinch roller region, allowing the rear end portion of the material to be conveyed to the working machine even after passing the pinch rollers.
3Measurement precision
If the feed bar slides to convey the long material through the pinch roller apparatus, then precise positioning is achieved, but the feed bar must be supported to allow sliding in the conveying direction
Solution Approach 1:
The guide rail function is extracted from the overall system and applied only to the feed bar support, rather than covering the entire conveying table. This extraction reduces the complexity of the support structure while maintaining the precision needed for feed bar positioning and movement.
Solution Approach 2:
The guide rail is provided only where needed - specifically to support the feed bar during its sliding movement - rather than covering the entire conveying table. This local application of the guide rail provides necessary positioning precision for the feed bar while minimizing structural complexity.
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
Enables lateral material entry from any side, stable conveyance, and precise positioning without guide rails, reducing unworkable material and increasing space efficiency.
Implementation Method 1
conveys the long material toward the working machine by driving the drive roller to rotate under a state in which the pinch rollers sandwich the long material
Implementation Method 2
the feed bar device including a feed bar extending in a conveying direction of the long material, a support portion for supporting the feed bar to allow the feed bar to slide in the conveying direction
Data Source
AI summary
Under a state in which a long material (structural steel (A)) is sandwiched by pinch rollers (drive roller (21) and idle rollers (22)) of a pinch roller apparatus (20), the drive roller (21) is driven to rotate, and the structural steel (A) is conveyed forward. When a rear end portion of the structural steel (A) reaches a vicinity of the pinch roller apparatus (20), the rear end portion of the structural steel (A) is held by a holding portion (32) provided at a front end portion of a feed bar (36) of a feed bar device (30), and the feed bar (36) is caused to slide toward a working machine. Consequently, the structural steel (A) is conveyed forward through the pinch roller apparatus (20) and is positioned.