Rotatable Strapping Unit for Maintenance Access

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Solution Overview

Problem

Maintenance of existing strapping stations is complicated due to the inaccessible position of the strapping unit and conveyor system, leading to prolonged machine downtime and the need to disassemble parts for maintenance.

Innovation Solution

A strapping station with a strapping unit suspended from a cantilevered arm that can be rotated and vertically moved, allowing easy access for maintenance and operation, and featuring a conveyor system that can be easily accessed and maintained without interrupting strapping operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the strapping unit is positioned inside the operating zone for continuous operation, then productivity is improved, but ease of repair deteriorates due to inaccessibility

Engineering Contradiction:
Improvecontinuous strapping operationVSAvoidmaintenance accessibility
Core Design Contradiction:
ProductivityVSEase of repair

Solution Approach 1:

The strapping unit is mounted on a rotatable arm that allows it to dynamically change position between an operative position (inside the operating zone for continuous operation) and a maintenance position (outside the operating zone for easy access). This dynamic repositioning resolves the contradiction by enabling both continuous productivity and easy maintenance at different times.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention adds a rotational dimension to the strapping unit's positioning capability. By rotating the arm about a vertical axis, the strapping unit can move from the horizontal operating zone into a different spatial dimension (maintenance zone), allowing maintenance personnel to access components without interrupting the overall system design.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If the conveyor system is located in the operating zone, then productivity is improved, but ease of operation deteriorates due to difficulty in accessing conveyor parts

Engineering Contradiction:
Improvesequential object transportVSAvoidconveyor maintenance access
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The conveyor system is designed to be repositionable relative to the strapping unit. When maintenance is needed, the conveyor can be dynamically moved to an accessible position outside the operating zone, while during operation it returns to its productive position within the operating zone.

Inventive Principle:
Principle #15Dynamics

3Productivity

If maintenance is performed on the strapping unit in its operative position, then productivity is maintained, but loss of time increases due to disassembly requirements

Engineering Contradiction:
Improveminimal operational interruptionVSAvoidmaintenance downtime
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The system allows the strapping unit to be pre-positioned in the maintenance position before maintenance is actually needed. This preliminary positioning action enables maintenance personnel to access components immediately when maintenance is required, eliminating the time-consuming disassembly process that would otherwise be necessary.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3956231B1Strapping station with rotatable strapping unit
Publication Date: 2023.05.03 MESSERSI PACKAGING
  • EP3956231B1 patent drawingFigure 1~2
  • EP3956231B1 patent drawingFigure 3~4
  • EP3956231B1 patent drawingFigure 5~6

AI summary

A strapping station (10) comprises a strapping unit (11) which is provided with a rectangular frame (14) intended to be passed through by an object on which a strap (40) is to be applied when the strapping unit (11) is in its operative position. Along one side of the frame (14) there is a strapping head (15) for forming a strap ring along the frame (14) and for tightening it around the object to be strapped. The strapping unit (1) is suspended from an arm (20) which protrudes from a support (21) to which the arm is rotatably constrained in a cantilevered manner about a vertical axis (22) so that it may be moved away from the said operative position.