Semifinished Pouring Nozzle Cutting Element Fitting
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Solution Overview
Problem
Existing closable opening devices for sealed packaging face challenges in efficiently and cost-effectively fitting semifinished products, as the cutting element's teeth can bend or break when pushed into the pouring nozzle, leading to operational failures and high equipment costs due to complex fitting processes.
Innovation Solution
The solution involves producing a semifinished product with a cutting element and pouring nozzle as a one-piece semifinished product, where the cutting element is injection molded to the pouring nozzle via predetermined breaking points, allowing for a simpler and more cost-effective fitting process without compromising the seal, and incorporating a ring-shaped sealing bead that extends further into the spout to ensure a secure fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the cutting element and pouring nozzle are pushed together without specific arrangements, then the fitting process is simple, but the teeth of the cutting element bend, break or become blunt
Solution Approach 1:
The patent applies preliminary action by providing support surfaces at the lower end of the pouring nozzle and/or upper end of the cutting element that engage before the teeth come into contact. This preliminary support prevents the teeth from bending or breaking during the pushing operation, allowing for a simple fitting process while maintaining teeth integrity.
2Reliability
If complicated fitting devices are used to protect the teeth, then the teeth remain intact, but the equipment cost increases and fitting speed decreases
Solution Approach 1:
The support surfaces are integrated into the semifinished product structure itself, providing preliminary protection to the teeth during fitting without requiring external complicated devices. This maintains high fitting speed while ensuring teeth integrity.
Solution Approach 2:
The semifinished product structure itself provides the protective function through its geometric design (support surfaces), eliminating the need for separate protective devices. The structure serves both its functional purpose and the protective purpose simultaneously.
3Ease of manufacture
If the cutting element is injection molded to the pouring nozzle via predetermined breaking points, then the fitting process becomes simpler and more cost-effective, but the seal integrity may be compromised
Solution Approach 1:
The ring-shaped sealing bead is designed to extend further into the spout of the pouring nozzle as a preliminary protective measure, compensating for the potential gap or defect created by the predetermined breaking points. This ensures seal integrity is maintained even with the simplified injection molding process.
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 approach enables faster and more cost-efficient assembly of the opening device without compromising the seal's integrity, reducing tool costs and minimizing rejects, while ensuring the cutting element's teeth remain undamaged and functional.
Implementation Method 1
the cutting element pierces the packaging in a screw motion
Implementation Method 2
the cutting element is injection molded to the pouring nozzle via predetermined breaking points
Data Source
AI summary
A pouring nozzle with a flange and an internal thread and an external thread, and also a cutting element having an upper rim and a lower rim formed with teeth. A screw cap with catches acts on catches of the cutting element. To make fitting easier, the cutting element and the pouring nozzle are produced as a one-piece semifinished product, wherein the cutting element is connected to the lower rim by weakened bridges so that the lower rim of the cutting element lies in a plane with the upper rim of the pouring nozzle and the teeth are protected in the pouring nozzle. This structural design allows an easy fitting which also reduces the reject rate.