Interchangeable Axial Load Device for Capping Heads

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Solution Overview

Problem

Current capping machines lack operational flexibility in adjusting axial loads for different screw cap types, requiring complex and time-consuming processes, especially when integrated springs are used, and are costly when dedicated capping heads are needed for each type.

Innovation Solution

A motion transmission group with an integrated axial load device that allows quick and reliable adjustment of axial loads by replacing the entire axial load device with pre-loaded springs, eliminating the need for specialized personnel and tools, and enabling the use of interchangeable devices for various cap types.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If pre-loaded compression springs are integrated into the motion transmission group, then the axial load can be applied during vertical translation, but the adjustment becomes operationally complex and time-consuming

Engineering Contradiction:
Improveaxial load adjustmentVSAvoidspring replacement time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The motion transmission group is divided into separable modules: the first module contains the compression spring, while the second module can be quickly coupled or uncoupled from the first. This segmentation allows the spring-containing module to be replaced as a complete unit rather than requiring complex in-situ adjustment, significantly reducing operational time while maintaining the pre-loaded spring mechanism's functional benefits.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from a static, fixed spring configuration to a dynamic, interchangeable module system. The motion transmission group can be reconfigured by coupling different modules with different pre-loaded springs according to different cap types, enabling rapid adaptation without complex adjustment procedures.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If dedicated capping heads are provided for each cap type, then operational flexibility is improved, but system cost increases

Engineering Contradiction:
Improvecap type adaptabilityVSAvoidnumber of capping heads
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

A single capping head design is made universal by combining it with interchangeable motion transmission modules. Each module is configured with specific pre-loaded springs for different cap types, allowing one capping head to perform multiple functions across different cap types without requiring dedicated heads for each type, thereby reducing overall system complexity and cost.

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

Solution Approach 2:

The motion transmission modules are pre-configured with appropriate compression springs for specific cap types before being installed on the capping head. This preliminary preparation allows for rapid switching between cap types by simply replacing the pre-configured module rather than adjusting a single complex mechanism, enhancing adaptability while maintaining simplicity.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If frequent cap changes are required, then production flexibility is needed, but specialized personnel and equipment are required for spring replacement

Engineering Contradiction:
Improveproduction flexibilityVSAvoidspring replacement simplicity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system is designed to enable operators to perform module replacements without requiring specialized personnel or equipment. The coupling mechanism between modules is simplified to allow straightforward attachment and detachment of spring-containing modules, making the system self-sufficient for routine changes and eliminating the need for specialized intervention.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

By segmenting the motion transmission group into replaceable modules, the complex task of spring replacement is transformed into a simple module swap operation. This segmentation isolates the complex spring mechanism within a self-contained module that can be handled and replaced by standard operators using basic tools or even hand operations.

Inventive Principle:
Principle #1Segmentation

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

This solution simplifies the adjustment of axial loads, reduces operational downtime, and decreases system costs by allowing fast adaptation to different cap types without the need for specialized intervention, enhancing the operational flexibility and reliability of capping machines.

Implementation Method 1

The device 10 comprises at least one pre-loaded compression spring 12 so as to generate in use the aforesaid predefined axial load

Methodology Applied
Scientific EffectCompression spring: Spring

Data Source

PatentEP3647256B1Motion transmission group for capping heads for screw caps
Publication Date: 2022.07.20 MBF SPA
  • EP3647256B1 patent drawingFigure 1~2
  • EP3647256B1 patent drawingFigure 3
  • EP3647256B1 patent drawingFigure 4

AI summary

The present invention concerns a motion transmission group for capping heads for screw caps. This group 1 comprises a device 10 for applying in use a predefined axial load to means of axial engagement P of the caps which a capping head T associated in use with said group is provided with. The device comprises at least one axially pre-loaded compression spring 12 so as to generate in use this predefined axial load. The device 10 is separable from the main structure of the transmission group 1 as a single body, with the aforesaid at least one spring maintained associated with a support structure 11 of the device in pre-loaded condition by means of two axial positioning portions 11b, 11c, to allow the replacement of the device with a structurally similar device, but suitable to generate in use a different axial load.