Slack Casing Looping Mechanism for Stuffing Machines
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Solution Overview
Problem
Existing sausage stuffing machines cannot produce longer product logs without increasing the voider spread distance, which requires enlarging the packaging/stuffing machines, and do not provide sufficient slack casing for reshaped products like square or rectangular shapes.
Innovation Solution
A packaging machine apparatus with a pair of spaced-apart spanner members and an actuator system that positions and moves a drawing member to create a loop in the slack casing, increasing its length without enlarging the machine, using rollers to engage the casing and adjust the loop formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the voider spread distance is increased to provide more slack casing for longer product logs and reshaped products, then the amount of slack casing is improved, but the machine size must be enlarged
Solution Approach 1:
The patent introduces a drawing member that operates in a dimension perpendicular to the casing flow direction. By moving the drawing member laterally away from the spanner members, a loop is formed that extends the slack casing length without requiring additional axial space in the machine. This dimensional change allows the machine to produce more slack casing for longer and reshaped products without enlarging the overall machine footprint.
2Productivity
If the voider spread distance is increased to create more slack casing, then the productivity for longer product logs is improved, but the device complexity increases
Solution Approach 1:
The drawing member serves multiple functions: it engages the slack casing, draws it laterally to form a loop, and thereby extends the casing length. This single component performs what would otherwise require multiple separate mechanisms, reducing overall device complexity while enabling the production of longer product logs and reshaped products that require additional slack casing.
Data Source
AI summary
A casing extender apparatus (30) includes a first actuator assembly (50) to raise and lower a pair of spaced-apart spanners (52a and 52b) from a position above the bunched casing rope (24) to a position adjacent the rope. A second actuator assembly (54) lowers a drawing member (56) to a position beneath the slack casing rope and then draws the slack casing rope upwardly between the spanners to form a loop (60) of slack casing rope upwardly between the spanners (52a and 52b).