Overmoulded Bar Feeder Frame for Precision and Vibration Damping
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Solution Overview
Problem
Current bar feeder manufacturing methods face challenges with dimension drift, high labor and production costs, and inadequate anti-vibration and anti-noise properties due to the assembly of metal components and the use of metal frames, which affect the precision and efficiency of the guidance system.
Innovation Solution
A method involving combined molding and overmolding using polymer concrete to create a one-piece central assembly that replaces the metal beam and aluminum profile, allowing for the integration of structural and functional elements, such as guide channels and anchoring elements, which are then embedded in a chassis to enhance mass and rigidity, while maintaining precision and reducing assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If metal components are assembled to form the frame structure, then the frame provides structural support and guidance, but dimension drift occurs during assembly which reduces precision
Solution Approach 1:
The patent combines multiple separate metal components (central beam, aluminum profile, guide channel segments, anchoring elements) into a single integrated frame structure made of polymer concrete. This merging eliminates the assembly process that causes dimension drift and reduces assembly complexity while maintaining structural support and guidance functions.
Solution Approach 2:
The patent uses polymer concrete, a composite material consisting of polymer resin and aggregate, to create the frame structure. This composite material provides both structural strength and dimensional stability, eliminating the precision issues associated with assembling multiple metal components while maintaining the required mechanical properties.
2Ease of manufacture
If multiple segments are assembled one by one to form the guide channel, then the guide channel can be constructed, but assembly time increases significantly
Solution Approach 1:
The patent integrates the guide channel segments into a single monolithic frame structure made of polymer concrete. This eliminates the need to assemble multiple segments one by one, dramatically reducing assembly time while maintaining the guide channel's functionality for bar transport.
Solution Approach 2:
The guide channel geometry is pre-formed within the polymer concrete frame structure during manufacturing. This preliminary formation of the complete structure eliminates the need for subsequent assembly operations, reducing assembly time to minimal positioning and securing steps.
3Object-affected harmful factors
If metal frame with low weight is used, then the machine footprint is reduced, but noise and vibrations increase
Solution Approach 1:
The patent uses polymer concrete, a composite material with high density due to the aggregate content, to create the frame structure. This dense composite material effectively dampens vibrations and reduces noise from bar rotation while providing the required structural support, eliminating the need to choose between light weight and vibration reduction.
Solution Approach 2:
The patent changes the material parameters of the frame from lightweight metal to dense polymer concrete composite. This parameter change in material density and composition provides inherent vibration damping and noise reduction properties while maintaining an acceptable frame weight for the application.
4Manufacturing precision
If polymer concrete is used to increase mass and reinforce rigidity, then anti-vibration properties improve, but the structural elements cannot be functionally integrated
Solution Approach 1:
The patent merges the structural frame, guide channel, and anchoring elements into a single integrated polymer concrete structure. This integration maintains the high precision guidance properties of the metal profile design while incorporating the vibration-damping benefits of polymer concrete, and simplifies manufacturing by eliminating separate assembly steps.
Data Source
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AI summary
Method of manufacturing a chassis (1) for a bar feeder, characterized in that it comprises a first molding step (A) carried out using a first molding material (M1) in a mold (20) jointly with an overmolding step (B) of a counter-mold (50), the shape of the mold (20) and/or the shape cavities of the counter-mold (50) being designed to produce in a single piece at least a first structural and/or functional element of said bar feeder.