Sheet Metal Processing Cell for Automated Web-Material Roll Changes
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Solution Overview
Problem
Conventional methods for changing rolls of web material in sheet metal processing lines are time-consuming and cumbersome, often requiring manual intervention, which disrupts the processing line and limits the efficiency of roll changes due to the size and proximity of roll holders to the applicator system.
Innovation Solution
A sheet metal processing cell with an applicator assembly, storage assembly, and transfer assembly that automates the movement of rolls between these components, using a control system to manage roll selection, storage, and changeover, reducing operator involvement and downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual roll changeover is used, then operator control is maintained, but downtime increases and productivity decreases
Solution Approach 1:
The system pre-positions multiple rolls of web material in the storage assembly before processing begins. The transfer assembly is pre-configured with the capability to automatically exchange rolls, so when a roll needs changing, the replacement is already in position and can be installed immediately without manual intervention or significant downtime.
Solution Approach 2:
The transfer assembly is designed to automatically perform the roll changeover operation without human assistance. The system monitors roll usage and autonomously executes the transfer of new rolls from storage to the applicator assembly, allowing the processing line to maintain continuous operation.
2Adaptability or versatility
If multiple roll holders are arranged adjacent the applicator system, then roll availability improves, but space constraints limit the number of rolls that can be stored
Solution Approach 1:
Instead of arranging roll holders only in the horizontal plane adjacent to the applicator, the storage assembly extends in multiple dimensions - vertically stacked and arranged in rows. This three-dimensional configuration allows many more rolls to be stored in a compact footprint, overcoming the space limitations of traditional side-by-side roll holder arrangements.
Solution Approach 2:
The storage assembly is designed with a compact, space-efficient structure where rolls are nested in an organized array. The transfer assembly can access rolls from different positions in this compact storage configuration, maximizing the number of rolls that can be accommodated in the available space around the applicator system.
Data Source
AI summary
A sheet metal processing cell applies web material to sheet metal. The web material is unwound from a roll that is rotatably supported by a mandrel. An applicator assembly includes a conveyor for the sheet metal, an unwind stand, and an applicator roller that receives and applies the web material to the sheet metal. An storage assembly disposed above the conveyor has mounts that support one or more mandrels. A transfer assembly includes a picker assembly that moves between the applicator assembly and the storage assembly and transfers the mandrel between the unwind stand and the mounts in the storage structure. The picker assembly has a roll clamp assembly configured to engage and disengage from the mandrel when the picker assembly transfers the mandrel to and from the unwind stand and when the picker assembly transfers the mandrel to and from the mounts in the storage structure.