Casing Brake Linkage for Low-Friction Tubular Case Change
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Solution Overview
Problem
Existing casing holding devices for filling tubular cases with pasty foodstuff materials face challenges in simplifying the movement of the casing brake between the portioning and casing change positions, often requiring high forces and energy due to significant frictional forces involved in sliding guides.
Innovation Solution
A guide linkage with multiple links is introduced, allowing the casing brake to move axially in the first phase and pivot in the second phase, reducing the force needed for manual actuation and minimizing friction, enabling a simplified and efficient uncoupling and coupling process with a four-link linkage mechanism that guides the casing brake along a predetermined curved path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sliding guide is used to move the casing brake, then the casing brake can be moved between positions, but significant frictional forces occur requiring high actuation forces
Solution Approach 1:
The patent replaces the sliding guide mechanical system with a guide linkage system consisting of multiple links and joints. This substitution transforms the motion mechanism from direct sliding contact to a multi-link articulated system, eliminating the significant frictional forces that characterized the sliding guide approach while maintaining the ability to move the casing brake between portioning and casing change positions.
Solution Approach 2:
The patent segments the motion of the casing brake into multiple phases through the guide linkage: a first phase with substantial axial movement and a second phase with pivotal movement. This segmentation of the single sliding motion into multiple discrete movement phases through articulated links reduces friction at each stage compared to continuous sliding contact.
2Ease of operation
If the casing brake is moved manually, then operation is simple, but the process is time-consuming and less efficient
Solution Approach 1:
The patent makes the casing brake positioning system dynamic by implementing a guide linkage that enables quick transition between positions. The articulated linkage system allows the brake to move rapidly between the portioning position and casing change position, transforming the previously static or slowly移动的 brake system into a dynamic positioning system that maintains manual simplicity while achieving higher operational speed and productivity.
Solution Approach 2:
The guide linkage system enables periodic action by facilitating rapid back-and-forth movement of the casing brake between its two primary positions. This periodic positioning action allows the filling process to proceed more quickly through repeated cycles of portioning and case changing, thereby increasing overall productivity while maintaining manual operation.
3Manufacturing precision
If the casing brake moves in a single direction, then the structure is simple, but the precision and control of movement are insufficient
Solution Approach 1:
The patent introduces dynamic control through the guide linkage system, which enables the casing brake to execute precise two-phase movement: axial displacement followed by pivotal motion. This dynamic multi-directional capability provides superior movement precision compared to simple single-direction mechanisms, allowing accurate positioning at both the portioning and casing change positions despite the increased structural complexity of the articulated linkage.
Data Source
AI summary
Casing holding device for filling tubular cases with a pasty foodstuff material. A casing brake, in a portioning position, is in contact with a case drawn on to a filling tube and produces a pressing force between case and filling tube. An adjusting device is configured for moving the casing brake between the portioning position and a casing change position in which the casing brake is uncoupled from the filling tube. The adjusting device has a guide linkage which has a plurality of links and which is adapted for the casing brake in at least a first phase of the movement out of the portioning position into the casing change position to be moved substantially axially relative to the longitudinal axis of the filling tube and to be pivoted in at least a second phase of the movement relative to the longitudinal axis of the filling tube.