Vacuum Forming Tools for Automated Folding Box Inserts

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Solution Overview

Problem

Existing devices for producing inserts for folding boxes from flat blanks lack automation, requiring manual intervention and inefficiency in forming the necessary structures to subdivide the inner volume.

Innovation Solution

A device with movable forming tools perpendicular to the blank plane, equipped with vacuum suction for fixing and shaping the blank into a grid-like structure, allowing for automated production of inserts and parallel processing with folding boxes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If manual methods are used to produce inserts from flat blanks, then flexibility in handling complex shapes is maintained, but automation level and production efficiency are reduced

Engineering Contradiction:
Improveautomation levelVSAvoidforming tool complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The forming tool is divided into multiple independent forming elements (2a-2e) that can be individually positioned and controlled. Each forming element can be independently adjusted to create different shapes and configurations, enabling automated production of various insert designs without requiring complete tool redesign

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The forming elements are designed to be movable and adjustable during the forming process. The elements can be positioned at different locations and adjusted to different heights or angles, allowing the same automated tool to produce multiple insert configurations dynamically without manual intervention

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If forming tools are used to erect floor areas and wall areas from the blank, then the insert structure is created, but the forming tools must be precisely positioned and coordinated

Engineering Contradiction:
Improveinsert geometry precisionVSAvoidforming tool coordination
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The insert is formed by multiple separate forming elements (2a-2e) that each create specific portions of the final structure. This segmentation allows each element to be independently controlled and positioned, ensuring precise formation of individual walls and floors while simplifying the overall coordination requirement

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The forming elements are designed to work simultaneously at the same operational level, with standardized movement paths and positioning mechanisms. This equipotential design ensures that all elements can be coordinated through a single control system without complex inter-element timing or positioning requirements

Inventive Principle:
Principle #12Equipotentiality

3Manufacturing precision

If vacuum suction devices are used to fix the blank, then holding force and positioning accuracy are improved, but the device complexity increases

Engineering Contradiction:
Improveblank positioning accuracyVSAvoidvacuum system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The vacuum suction devices are integrated into the existing forming tool structure, serving dual functions: they provide holding force to secure the blank during forming and also assist in positioning the blank initially. This multi-functionality reduces the need for separate positioning mechanisms, thereby limiting the increase in device complexity

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

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 fully automated manufacturing of inserts from flat blanks, facilitating efficient subdivision of the folding box volume and enabling simultaneous production of folding boxes and inserts, improving production efficiency and accuracy.

Implementation Method 1

the means for fixing the blank for use on the molds are designed by negative pressure or vacuum suction devices

Methodology Applied
Scientific EffectNegative pressure or vacuum suction: Vacuum

Data Source

PatentEP2292420B1Device for the production of an insert for a folding box, and machine for the production of a folding box with insert
Publication Date: 2012.04.25 ROBERT BOSCH GMBH
  • EP2292420B1 patent drawingFigure 1
  • EP2292420B1 patent drawingFigure 2
  • EP2292420B1 patent drawingFigure 3a~4

AI summary

The device (1) has device forming tools (2a to 2e), which are displaced perpendicularly to a plane of a section (8) on one hand and relatively to each other on another hand. The forming tools are equipped with a unit for fixing pieces of the section. The unit is formed from pieces of the section by lower pressure or vacuum suction. An independent claim is also included for a machine for manufacturing an insert for a folding box of a flat lying section.