Adjustable Bar Feeder Guide Segments for Continuous Diameter Adaptation
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Solution Overview
Problem
Conventional bar feeder guiding devices face challenges in adapting to varying bar diameters and shapes, leading to increased energy consumption, production stoppages, and high costs due to the need for frequent replacement of guide elements, while existing solutions either introduce inertia or induce bending and shearing forces, negatively impacting guidance quality.
Innovation Solution
A guiding device with a system of adjustable guide segments forming a mechanical iris, allowing for continuous guidance without interruptions, with a clearance significantly less than the nominal diameter, enabling adaptation over a wide range of diameters without adding significant inertia, and maintaining optimal lubrication and guidance quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If guide elements are replaced to adapt to different bar diameters, then adaptability is improved, but productivity deteriorates due to frequent production stoppages
Solution Approach 1:
The guide elements are made movable and adjustable rather than fixed, allowing continuous modification of the passage cross-section to accommodate different bar diameters without replacement, thus maintaining production continuity while providing adaptability
Solution Approach 2:
The guide structure is divided into multiple guide segments that can be independently adjusted to modify the passage cross-section, enabling adaptability to different bar dimensions without stopping production
2Adaptability or versatility
If deformable guide elements are used to adjust passage section, then adaptability is improved, but device complexity increases
Solution Approach 1:
The guide system is segmented into multiple adjustable elements that can be independently positioned to create different passage cross-sections, providing adaptability through a relatively simple modular structure rather than complex deformable mechanisms
3Adaptability or versatility
If bearing sectors are nested in modular manner, then adaptability is improved, but manufacturing precision deteriorates due to bending and shear stresses
Solution Approach 1:
The guide segments are designed to be adjustable without inducing bending or shear stresses in the bar, maintaining guidance precision by allowing the bar to rotate freely while the segments modify the passage cross-section dynamically
4Use of energy by moving object
If clearance between bar and guide elements is optimized, then energy consumption is reduced, but adaptability worsens due to fixed passage section
Solution Approach 1:
The passage cross-section is made dynamically adjustable, allowing the clearance between the bar and guide elements to be optimized for each specific bar diameter, thus reducing energy consumption while maintaining adaptability to different bar sizes
Data Source
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AI summary
A guide device for a bar feeder, comprising at least one bearing (12) defining a guide channel (14) with a generally closed contour, extending continuously in a longitudinal direction (Z) and having, in a plane transverse (XY) to the longitudinal direction (Z), a section referred to as the guide section, and a system for adjusting said guide section. According to the invention, the bearing (12) comprises at least three guide segments (30) delimiting between them a channel forming the guide channel (14), and the adjustment system (20) is configured to move the guide segments (30) relative to each other so as to adjust a transverse dimension of the channel (14).