Collection Hopper Inversion for Packaging Sealing Accuracy
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Solution Overview
Problem
Existing collection hopper systems oscillate at high speeds, causing inertia that can lead to articles contacting the opening edge of the packaging machine input port, resulting in delayed arrival and improper sealing, especially when dealing with smaller packaging bags.
Innovation Solution
A collection device with an upper collection hopper having integrally coupled storage chambers that discharge articles diagonally and a lower collection hopper that stores and discharges them vertically, eliminating the need for oscillation and reducing contact resistance through tapered and inclined surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If collection hoppers oscillate at high speeds to discharge articles, then discharge speed is improved, but articles contact the opening edge of the packaging machine input port causing delayed arrival and improper sealing
Solution Approach 1:
Instead of oscillating the collection hopper to discharge articles, the invention inverts the approach by using a stationary hopper with a movable discharge gate. The gate oscillates to control discharge timing while the hopper itself remains fixed, preventing inertia-induced article contact with the input port edge and ensuring reliable sealing.
Solution Approach 2:
The collection hopper is segmented into an upper collection hopper with multiple storage chambers and a lower collection hopper. This segmentation allows articles to be collected and discharged in a controlled manner, with the lower hopper positioned directly above the input port to ensure vertical discharge without lateral contact, thus maintaining sealing quality while achieving adequate discharge speed.
2Manufacturing precision
If collection hoppers are positioned close to the packaging machine for small bags, then sealing accuracy is improved, but articles are more likely to contact the opening edge due to reduced clearance
Solution Approach 1:
The invention inverts the discharge mechanism from hopper oscillation to gate oscillation. This allows the hopper to be positioned close to the packaging machine for small bags (improving sealing accuracy) while the stationary hopper and controlled gate discharge prevent articles from contacting the opening edge, eliminating the harmful effect.
Solution Approach 2:
The discharge gate acts as an intermediary between the collection hopper and the packaging machine input port. It controls the discharge of articles, ensuring they are released in a controlled manner that prevents direct contact with the opening edge, thus allowing close positioning for small bags without the harmful contact effect.
3Productivity
If multiple collection hoppers are used for multiple discharge paths, then weighing speed is improved, but device complexity increases
Solution Approach 1:
The invention merges multiple storage chambers into a single integrated collection hopper structure. The upper collection hopper contains multiple storage chambers that feed into a shared lower collection hopper, which then discharges to a single packaging machine input port. This merging maintains the productivity benefits of multiple discharge paths while reducing the complexity of managing multiple separate hoppers.
Data Source
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AI summary
Articles discharged in different directions from different storage chambers of an upper collection hopper are temporarily stored in one storage chamber of a lower collection hopper and then discharged vertically downward. As such, the articles may be thrown into an input port of a packaging machine right below the lower collection hopper even if the input port has a small opening area.