Pivot Arm Indexing for Multi-Station Seamer Throughput
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Solution Overview
Problem
Current technologies for distributing work products to multiple workstations suffer from dead time due to the need to retract pneumatic cylinders, are costly, and lack flexibility in spacing and operation.
Innovation Solution
An indexing system with a multi-position platform and pivot arm assembly that rotates about an axis to efficiently move work products between receiving, processing, and discharge stations, minimizing components and ensuring continuous operation without lost time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pneumatic cylinders are used to push containers along different tracks, then work products can be distributed to multiple workstations, but dead time occurs due to the need to retract the cylinders in preparation to push the next container forward
Solution Approach 1:
The pivot arm assembly continuously rotates in one direction to advance containers along the arcuate path from the receiving station through processing stations to the discharge station. This unidirectional rotation eliminates dead time by ensuring the indexing mechanism is always performing useful work of advancing containers, with no retraction or idle movements required.
Solution Approach 2:
The system transitions from static pneumatic cylinders that must retract and reposition to a dynamic pivot arm assembly that continuously rotates. The pivot arm dynamically changes its position along the arcuate path, maintaining continuous contact with containers to push them forward without interruption or dead time.
2Adaptability or versatility
If multiple pneumatic cylinders are used for each workstation track, then work products can be fed to multiple stations, but the system complexity and cost increase
Solution Approach 1:
The single pivot arm assembly serves multiple functions by rotating to different positions along the arcuate path. It can push containers to the first processing station, the second processing station, or the discharge station depending on its rotational position. This multi-functional design eliminates the need for separate pneumatic cylinders for each track, reducing overall system complexity while maintaining the ability to feed multiple workstations.
Solution Approach 2:
The system merges the functions of multiple pneumatic cylinders into a single integrated pivot arm assembly. Instead of having separate actuation mechanisms for each workstation track, the pivot arm combines all pushing functions into one mechanism that serves all stations through its rotational movement along the arcuate path.
3Ease of manufacture
If fixed spacing is used for work products on the conveyor, then the feed mechanism can be simple, but flexibility is reduced when workstations need to operate independently
Solution Approach 1:
The pivot arm assembly provides dynamic indexing capability that adapts to varying container spacing. As containers arrive at the receiving station with variable spacing, the pivot arm rotates to the appropriate angular position to catch and advance each container to the correct processing station. This dynamic positioning allows the system to handle variable spacing while maintaining simple arcuate geometry, achieving both manufacturing simplicity and operational flexibility.
Data Source
AI summary
An indexing system for a multi-head seamer apparatus for scaling the tops of containers includes a multi-position indexing platform having a plurality of stations arranged along an arcuate path about an axis (62), including a receiving station (44) for receiving containers to which covers are to be sealed, and a diametrically located discharge station (46) from which containers with covers sealed thereto are removed from the platform (20). At least two sealing stations (48. 50) are provided where at covers are scaled to the containers. A first sealing station (48) is positioned on the arcuate path extending clockwise from the receiving station (44) toward the discharge station (46), and a second sealing station (50) positioned on the arcuate path extending counterclockwise from the receiving station (44) toward the discharge station (46). A pivot arm assembly (60) is rotatable about the pivot axis (62) to move the containers from the receiving station (44) in a clockwise direction to the first sealing station (48) and in a counterclockwise direction to the second sealing station (50).