Movable Blowing Assembly for Bag Neck Removal in Sealing Units
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Solution Overview
Problem
Existing packaging devices face difficulties in removing severed bag necks from the abutment due to clinging issues, leading to accumulation and potential clogging, which can compromise the hermetic sealing of the chamber conveyor belt machine.
Innovation Solution
A blowing assembly with a movable blowing element that can be lowered into a housing and projected above it, utilizing compressed air to raise and blow away excess packaging material, including a blowing rail or pins, to ensure efficient removal without the need for additional suction or compressed air devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If compressed air devices and suction devices are used to remove severed bag necks, then removal capability is improved, but bag necks still cling to the abutment causing accumulation and potential clogging
Solution Approach 1:
The blowing element is made movable relative to the housing, transitioning between a first position (lowered into the housing) and a second position (projecting above the housing surface). This dynamic positioning allows the blowing element to adapt to different operational phases: during sealing it remains retracted, and during removal it projects to actively blow bag necks into the extractor, thereby improving removal capability while avoiding interference with sealing operations
Solution Approach 2:
The blowing element is activated before the gap to the extractor is fully opened. By raising the blowing element to the second position in advance, severed bag necks are blown away from the abutment surface before they can cling and accumulate. This preliminary action prevents the accumulation problem that occurs when using only compressed air devices or suction devices alone
2Productivity
If a compressed air device is provided in the chamber conveyor belt machine, then bag neck removal is improved, but the device complexity increases
Solution Approach 1:
The blowing assembly integrates the blowing element, housing, and compressed air delivery system into a single compact unit that can be mounted on the chamber conveyor belt machine. This merging of components achieves effective bag neck removal while avoiding the need for separate, complex compressed air devices and suction devices, thereby improving productivity without significantly increasing device complexity
Solution Approach 2:
The blowing assembly serves multiple functions: it acts as a sealing surface during the sealing process (when the blowing element is in the first position), and as a blowing device for removing bag necks (when the blowing element is in the second position). This multi-functionality eliminates the need for separate dedicated components, reducing overall device complexity while maintaining effective bag neck removal capability
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
The solution effectively and reliably removes both short and long severed bag necks, preventing accumulation and ensuring continuous operation of the packaging device by improving packaging times and preventing material from adhering to the blowing assembly.
Implementation Method 1
utilizing compressed air to raise and blow away excess packaging material
Data Source
AI summary
A blowing assembly for a sealing unit of a packaging device is provided comprising a housing and at least one blowing element which is movable relative to said housing between a first position, in which it is lowered at least partially into said housing, and a second position in which it at least partially projects above a surface of said housing. Also provided is a method for removing excess packing material from a blowing assembly for a sealing unit being provided in a packaging device.