Decentralized Suction Devices for Container Safety Strip Application
Solution Overview
Problem
Existing machines for applying safety strips to containers face issues with clogging in the suction circuit of crimping devices and vacuum loss when a safety strip is missing, leading to inefficient vacuum creation and reduced reliability.
Innovation Solution
The machine employs decentralized, independently operated suction devices for each application assembly, using pressurized air to create a partial vacuum at the suction port, preventing clogging and ensuring consistent suction force regardless of the presence of a safety strip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single vacuum generator is shared by all application assemblies through a vacuum distribution unit, then the device complexity is reduced, but the suction ports become prone to clogging and vacuum loss occurs when safety strips are missing
Solution Approach 1:
The patent divides the single shared vacuum system into multiple independent vacuum generators, each dedicated to a specific application assembly. This segmentation eliminates the common suction circuit that caused clogging and vacuum loss, while each generator operates autonomously to maintain reliable suction for its respective assembly.
2Ease of manufacture
If suction ducts are connected to a shared vacuum distribution unit, then the ease of manufacture is improved, but the suction ports fill with dirt and become clogged requiring laborious cleaning
Solution Approach 1:
Each application assembly has its own dedicated vacuum generator and suction circuit, eliminating the shared distribution unit that accumulated dirt. This segmentation isolates contamination to individual circuits, making cleaning much easier and less laborious.
Solution Approach 2:
The system design allows each vacuum generator to serve its own application assembly independently, with each unit being self-contained and easily removable for cleaning or replacement without affecting other assemblies.
3Loss of substance
If a single vacuum generator serves all application assemblies, then the loss of substance is reduced, but vacuum loss occurs when a safety strip is absent causing reduced attraction force
Solution Approach 1:
The patent assigns separate vacuum generators to each application assembly, eliminating the problem where one missing safety strip causes vacuum loss for all assemblies. Each generator maintains consistent vacuum force for its dedicated assembly independently.
Solution Approach 2:
The system uses electronic control to monitor and adjust vacuum parameters for each application assembly independently, ensuring consistent attraction force even when safety strips are missing from other assemblies.
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 design prevents clogging and vacuum loss, enhancing the machine's efficiency, reliability, and ease of maintenance by allowing local dirt deposition and easy access for cleaning, while ensuring consistent suction force across all application assemblies.
Implementation Method 1
create a partial vacuum at the suction port (25)
Implementation Method 2
retaining the second end (4b) of the safety strip (4) on its working face
Data Source
AI summary
A machine for applying safety strips to the upper part of containers. The machine has, along a container advancement path, at least one application station which includes at least one application assembly provided with at least one crimping device which includes a first pad, designed to make contact, with a working face thereof, with a first end of the safety strip applied to the corresponding container at a transfer station, and a second pad, which is provided, on its working face, with at least one suction port, for the removable retention of a second end of the safety strip; each application assembly includes a respective suction device which is connected to the suction port of the corresponding second pad.