Spring-Loaded Chute Liner for Strapping Machine Gap Elimination
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Solution Overview
Problem
Prior art modular chute designs for strapping machines suffer from strap short feeds due to gaps between chute liners and corner assemblies, which can cause the strap to snag, and precise machining to minimize these gaps is costly and ineffective due to thermal expansion and contraction differences in materials.
Innovation Solution
A chute corner assembly with a spring-loaded chute liner that includes a recess for the chute liner end, a spring plate for engagement, and a spring to bias the chute liner away from one corner assembly and towards an opposite one, allowing slidable movement and eliminating gaps during thermal changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chute liners are precisely machined to minimize gaps between liner ends and corner assemblies, then strap travel reliability is improved, but manufacturing cost and time increase
Solution Approach 1:
The chute liner is designed to be slidable along the support beam rather than being fixed in position. This dynamic capability allows the liner to automatically adjust its position in response to thermal expansion and contraction, maintaining contact with corner assemblies without requiring precise machining tolerances.
Solution Approach 2:
The invention changes the physical state of the chute liner from a statically fixed component to a dynamically adjustable one. By allowing the liner to slide along the support beam, the system adapts to temperature-induced dimensional changes in materials, eliminating the need for costly precision machining while ensuring reliable strap travel.
2Ease of manufacture
If chute liners are made stationary with fixed positions, then manufacturing simplicity is improved, but gaps form during thermal expansion and contraction causing strap snagging
Solution Approach 1:
The chute liner is designed with the capability to slide along the support beam, transforming it from a static component to a dynamic one. This allows the liner to automatically compensate for thermal expansion and contraction of the chute structure, maintaining continuous contact with corner assemblies and preventing strap snagging without complex manufacturing requirements.
Solution Approach 2:
The slidable chute liner serves itself by automatically adjusting its position in response to thermal changes in the chute structure. The liner's own mobility enables it to maintain proper alignment and contact with corner assemblies, eliminating the need for external adjustment mechanisms or precision machining to accommodate thermal expansion.
3Ease of manufacture
If the chute structure is made modular for ease of assembly, then ease of manufacture is improved, but gaps between modular components cause strap short feeds
Solution Approach 1:
The slidable chute liner design works specifically well with modular chute constructions. Each modular section can be independently assembled, and the slidable liners within each section automatically adjust to maintain continuous strap guidance paths, eliminating gaps and preventing strap short feeds while preserving the benefits of modular assembly.
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
This design eliminates the potential for strap snagging by creating a smooth path and dynamically adjusts to thermal changes, reducing manufacturing costs and time by eliminating the need for precise machining.
Implementation Method 1
precise machining to minimize these gaps is costly and ineffective due to thermal expansion and contraction differences in materials
Implementation Method 2
a spring to bias the chute liner away from one corner assembly and towards an opposite one
Data Source
AI summary
A chute corner assembly with a spring loaded chute liner for use in a strapping machine comprises a recess for receiving an end of an adjacent chute liner, a chute liner spring plate for engaging the end of the chute liner, a spring for biasing the chute liner away from the chute corner assembly and towards an opposite chute corner. The chute corner assembly of the present invention is used connection with a chute liner to eliminate the gap between the corner assembly and the chute liner, and to simultaneously dynamically eliminate any gap between the chute liner and the opposite chute corner.