Confectionery Wrapping Device Simplifies Folding Mechanism
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Solution Overview
Problem
Conventional packaging machines for edible products are complex and costly due to the need for alternating motion elements to fold wrapping material into a tubular shape, complicating the structure and increasing maintenance and production costs.
Innovation Solution
A method and device that partially envelops products in wrapping material, forming a 'U' profile, where one flap is bent and sealed against the other, then both are flattened and sealed together to form a tubular wrapper, using a conveyor with slots and grippers to simplify the folding process and reduce structural complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional folding mechanisms with alternating motion elements are used to fold wrapping material into a tubular shape, then the wrapping function is achieved, but the device structure becomes complex and maintenance costs increase
Solution Approach 1:
The patent combines multiple folding operations into a single continuous folding action. Instead of using separate alternating motion elements for different folding steps, a single folder element performs all folding operations sequentially as the product moves through the station, merging complex operations into one simple mechanism
Solution Approach 2:
The patent employs a dynamic folding process where the folder element moves continuously along the product path, changing its position and orientation dynamically during the folding sequence. This allows a single static element to perform multiple folding functions through its motion relative to the product and wrapping material
2Ease of manufacture
If alternating motion elements are used to fold edges in opposite directions, then the tubular wrapper is formed, but production costs increase
Solution Approach 1:
The patent maintains continuous productive action by keeping the folder element engaged with the wrapping material throughout the entire folding sequence. The single folder element continuously folds different portions of the wrapping material as the product moves, eliminating idle time and alternating motion requirements, thereby reducing costs while maintaining speed
3Reliability
If multiple folding stations with alternating motions are used, then the wrapping function is completed, but the device becomes more costly to maintain
Solution Approach 1:
The patent merges multiple folding stations into a single integrated folding station. All folding operations that would traditionally require separate stations with alternating motions are combined into one continuous operation by a single folder element, reducing the number of components that can fail and the complexity of maintenance procedures
Data Source
Figure 1a~1c
Figure 2a~2d
Figure 3a~3b
AI summary
In a method for wrapping products such as items of confectionery, each product (1) is first enveloped in part by a respective leaf (2) of wrapping material so as to create an intermediate wrap presenting a first flap (3) and a second flap (4), projecting from the product (1) on either side of one face (5) that remains exposed initially. The first flap (3) is then bent in a direction (Fl) causing it to rotate inwards and cover the exposed face (5) of the product (1), while also closing on the second flap (4) in such a way that an area (7) of mutual contact is established between the two flaps (3, 4), whereupon the first and second flaps (3, 4) are bent further in the same direction (F1) and flattened against an adjoining flank face (5a) of the product (1), so as to form a semi-finished tubular wrapper (8). Finally, the two ends (9) of the tubular wrapper (8) are sealed, preferably by fashioning twist closures (10).