Variable-Height Box Creasing With Rolling Scoring Mechanism

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Solution Overview

Problem

Existing packaging systems struggle to form consistent creases in corrugated cardboard boxes of varying dimensions, requiring manual replacement of creasing members and reducing productivity.

Innovation Solution

A packaging apparatus that measures the height of the stored object and forms horizontal creases on a cylindrical packaging box using rollers to ensure consistent crease formation, adaptable to different object heights without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If long convex and concave members are used to form creases across the entire horizontal area, then complete crease coverage is achieved, but pressure distribution becomes uneven causing inconsistent crease depth

Engineering Contradiction:
Improvecrease coverage areaVSAvoidcrease depth consistency
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The crease formation process is segmented into multiple passes. Instead of attempting to crease the entire horizontal area in one operation with long members, the apparatus creates creases sequentially across different sections, ensuring uniform pressure application in each segment while achieving complete coverage through multiple operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The apparatus introduces dynamic movement to the creasing process. The cylindrical body rotates during crease formation, allowing fixed or short creasing members to act on different horizontal sections sequentially. This dynamic approach maintains consistent pressure application while achieving complete crease coverage across the entire horizontal area.

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If box dimension changes are accommodated by replacing convex and concave members, then crease formation accuracy is maintained, but device complexity and productivity are reduced due to replacement time

Engineering Contradiction:
Improvecrease formation accuracyVSAvoidproductivity
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The apparatus employs universal creasing members that can accommodate multiple box dimensions without replacement. By using a cylindrical body with rotatable positioning and adjustable crease depth control, the same creasing members can effectively create accurate creases across various box sizes, eliminating the need for frequent component replacement.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses dynamic adjustment mechanisms rather than static fixed members. The cylindrical body's rotation and the adjustable positioning of creasing members allow the system to adapt to different box dimensions dynamically during operation, maintaining crease formation accuracy without requiring physical replacement of components.

Inventive Principle:
Principle #15Dynamics

3Manufacturing precision

If box dimension changes are accommodated by replacing convex and concave members, then crease formation accuracy is maintained, but device complexity increases due to replacement mechanisms

Engineering Contradiction:
Improvecrease formation accuracyVSAvoiddevice complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The apparatus is designed with universal, adjustable creasing members that can accommodate multiple box dimensions without replacement. The cylindrical body with rotatable positioning and adjustable crease depth control allows the same components to effectively create accurate creases across various box sizes, eliminating the need for complex replacement mechanisms.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system employs dynamic adjustment mechanisms rather than complex replacement systems. The cylindrical body's rotation and the adjustable positioning of creasing members provide flexibility to adapt to different box dimensions during operation, maintaining crease formation accuracy while keeping the device structure relatively simple.

Inventive Principle:
Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables consistent crease formation on cylindrical packaging boxes of varying heights, improving productivity by eliminating the need for manual member replacement.

Implementation Method 1

a roller part which holds the wall of the cylindrical body and moves in a horizontal direction while rolling on both front and rear surfaces of the wall to form the horizontal crease

Methodology Applied
Scientific EffectRolling: Roller

Implementation Method 2

The roller part moves in a horizontal direction while rolling on both front and rear surfaces of the wall, applying pressure to form the horizontal crease

Methodology Applied
Scientific EffectMechanical pressure: Compression

Data Source

PatentEP4711285A1Packaging device
Publication Date: 2026.03.18 RENGO CO LTD
  • EP4711285A1 patent drawingFigure 1
  • EP4711285A1 patent drawingFigure 2
  • EP4711285A1 patent drawingFigure 3

AI summary

A packaging apparatus (2) packages a stored object (90) in a packaging box (1) having a cylindrical body (1W) and changes a height of the packaging box (1) dependent on a height of the stored object (90). The packaging apparatus (2) includes a height measuring part (30) which measures a height of the stored object (90) stored in the cylindrical body (1W), and a scoring part (31) which forms a horizontal crease (L3) in a wall (10) of the cylindrical body (1W) based on a result of the height measuring part (30) to divide the wall (10) into a side wall (15) and an upper flap (16). The scoring part (31) includes a roller part (43) which holds the wall (10) of the cylindrical body (1W) and moves in a horizontal direction while rolling on both front and rear surfaces of the wall (10) to form the horizontal crease (L3).