Capper Folding Cam Segmentation for Independent OP1 and OP2 Control

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Solution Overview

Problem

Existing tax devices for can closers suffer from geometric distortions that lead to incorrect pre-folding during the folding process, particularly when adjusting the position of the OP2 area, which affects the accuracy of the first folding operation (OP1).

Innovation Solution

A tax device with a folding curve comprising independent first and second curve segments, allowing for separate adjustments of the first and second folding operations. The curve segments can move independently, enabling precise control over the folding process without influencing the other operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single folding curve is used to control both folding operations, then the device structure is simple, but geometric distortions occur when adjusting the OP2 area position, affecting the accuracy of the OP1 folding operation

Engineering Contradiction:
Improvecontrol device structureVSAvoidfolding operation accuracy
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The single folding curve is divided into two independent curve segments (first curve segment and second curve segment). Each segment can be adjusted independently without affecting the other, eliminating geometric distortions that occur when adjusting one area while maintaining the accuracy of the other folding operation.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If the curve segments are fixed, then the device structure is stable, but the adaptability to different folding requirements is limited

Engineering Contradiction:
Improvedevice structure stabilityVSAvoidfolding operation adjustability
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The curve segments are made adjustable and movable relative to each other, allowing the control device to adapt to different folding requirements. The first and second curve segments can be independently positioned to accommodate various folding operations while maintaining structural stability during operation.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4309824B1Control device for a closing machine
Publication Date: 2025.04.30 FERRUM PACKAGING AG
  • EP4309824B1 patent drawingFigure 1A~1B
  • EP4309824B1 patent drawingFigure 1C
  • EP4309824B1 patent drawingFigure 2

AI summary

The invention relates to a control device (1) for a capper (1000) for closing a container (100), comprising a carrier element (2); and a folding cam (4) arranged on the carrier element (2) with a cam track (3); and a folding device comprising a carrier shaft (7) with a control end and a folding end, wherein the folding device further comprises a control element (6) arranged at the control end and a folding lever (8) arranged at the folding end, wherein a first folding roller (81) for a first folding operation (OP1) and a second folding roller (82) for a second folding operation (OP2) are arranged on the folding lever (8), wherein the control element (6) is arranged to be movable in the cam track (4) such that the first folding operation (OP1) and the second folding operation (OP2) can be controlled by the movement of the control element (6) in the cam track (3).The folding curve (4) comprises a first curve segment (41) and a second curve segment (42), wherein the curve path (3) is formed by the first curve segment (41) and the second curve segment (42), and the first curve segment (41) and the second curve segment (42) are movable independently of each other such that the first folding operation (OP1) and the second folding operation (OP2) can be set independently of each other.