Adjustable Expansion Core for Tubular Mesh Bag Capacity Control

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing machines for manufacturing tubular mesh bags often face issues where the storage capacity of the tubular mesh does not match the length of the heat sealable bands, leading to either excess mesh hanging out or surplus space, resulting in suboptimal packaging of fruit and vegetable products.

Innovation Solution

A device with an expansion core and adjustable insertion plates that allow for varying the amount of tubular mesh inserted, creating side folds of variable depth to match the storage capacity with the band length, utilizing a hydraulic or pneumatic regulating mechanism to control the insertion plates' movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the storage capacity of the tubular mesh is increased, then the mesh can accommodate more product, but the bands of heat sealable material become insufficient in length to join the bottom with the mouth of the bag

Engineering Contradiction:

Improvestorage capacity of tubular meshVSAvoidlength of heat sealable bands

Core Design Contradiction:

Quantity of substanceVSLength of moving object

Solution Approach 1:

The expansion core is designed to be adjustable in size, allowing dynamic modification of the tubular mesh's storage capacity during the manufacturing process. By varying the expansion core dimensions, the system can adapt the mesh capacity to match the band length, resolving the contradiction between storage capacity and band length

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the physical parameters of the tubular mesh by using an adjustable expansion core that modifies the mesh's volume and shape. This allows the storage capacity parameter to be tuned to correspond with the fixed band length, achieving optimal packaging without excess mesh or insufficient band length

Inventive Principle:

Principle #35Parameter changes

2Length of moving object

If the storage capacity of the tubular mesh is decreased, then the bands of heat sealable material are sufficient in length, but excess space remains between the bands and the product

Engineering Contradiction:

Improvelength of heat sealable bandsVSAvoidstorage capacity of tubular mesh

Core Design Contradiction:

Length of moving objectVSQuantity of substance

Solution Approach 1:

The adjustable expansion core enables dynamic reduction of the tubular mesh's storage capacity when product volume is low. This dynamic adjustment ensures the mesh capacity always matches the available band length, eliminating excess space while maintaining sufficient band coverage

Inventive Principle:

Principle #15Dynamics

3Device complexity

If a fixed expansion core is used, then the manufacturing process is simple, but the storage capacity cannot be adjusted to match different band lengths

Engineering Contradiction:

Improvesimplicity of manufacturing processVSAvoidadjustability of storage capacity

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The adjustable expansion core serves multiple functions: it maintains the tubular mesh shape during manufacturing and simultaneously allows variation of storage capacity to match different band lengths. This multi-functionality resolves the contradiction between manufacturing simplicity and adaptability

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 the production of tubular mesh bags with an optimal relationship between storage capacity and band length, ensuring products are securely contained without excess space or hanging mesh, improving packaging efficiency.

Implementation Method 1

utilizing a hydraulic or pneumatic regulating mechanism to control the insertion plates' movement

Methodology Applied

Scientific EffectHydraulic or pneumatic pressure: Hydraulic Press

Data Source

PatentUS7780589B2Device for altering the storage capacity of a tubular mesh bag

Publication Date: 2010.08.24 GIRNET INT

AI summary

It is disclosed a device (1) for altering the storage capacity of a tubular mesh bag of heat sealable material during the manufacture thereof and the bag (15) obtained from its using. The device comprises an expansion core (2) to which the tubular mesh is peripheral, which is essentially oblong and will be inserted vertically inside the tubular mesh, thus determining two from faces (21) and two side faces of said mesh as it passes over the expansion core. The device has a mechanism for inserting, in a variable way as the mesh passes over the expansion core, sections of the peripheral tubular mesh into it, thus accumulating a greater or smaller quantity of mesh in each longitudinal section of mesh corresponding with one bag unit.