Foil Bag Cartridge Insert Alignment for Controlled Opening
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Solution Overview
Problem
Existing cartridges for dispensing devices lack precise positioning of the insert relative to the head, leading to uneven opening behavior and material wastage.
Innovation Solution
A cartridge design featuring a non-rigid elongated foil bag with a rigid insert connected via a form-fitting and/or force-fitting connecting device, allowing precise positioning and a detachable latching or screw connection to ensure accurate alignment and easy replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a releasable snap/lock connection is used to connect the insert to the head section, then the connection is simple and detachable, but the positioning precision is insufficient leading to uneven opening behavior
Solution Approach 1:
The connecting device is divided into multiple independent connecting elements distributed around the circumference. Each connecting element includes a connecting portion that engages with the head section and a positioning portion that precisely positions the insert. This segmentation allows the system to maintain detachability while achieving precise positioning through the coordinated action of multiple elements.
Solution Approach 2:
The connecting elements are arranged circumferentially around the insert, adding a dimensional aspect to the connection system. This circumferential arrangement in the radial dimension allows the insert to be precisely positioned in the longitudinal direction while maintaining ease of detachment through the distributed connection points.
2Ease of manufacture
If adhesive bonding is used to attach the insert to the head section, then the connection is simple, but the positioning precision is poor resulting in undefined opening behavior
Solution Approach 1:
The adhesive bonding method is replaced with a mechanical connecting device that uses form-fitting and force-fitting connections. The connecting elements engage mechanically with the head section through connecting portions, providing precise positioning through the geometric arrangement of connecting and positioning portions, while eliminating the need for adhesive bonding.
3Device complexity
If point-like locking mechanisms are used, then the connection is simple, but the positioning precision is insufficient causing large material wastage
Solution Approach 1:
The locking mechanism is segmented into multiple connecting elements distributed circumferentially. Each element contributes to both the locking function and positioning function. This segmentation allows the system to maintain simplicity through standardized connecting element design while achieving precise positioning that reduces material wastage through controlled opening behavior.
Data Source
Figure 1
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AI summary
The present invention relates to a cartridge (10) for an applicator device, said cartridge comprising: at least one elongate film bag (18) which is not inherently rigid and which has a chamber (20) for receiving a compound; a head part (12) for interacting with the film bag (18); and an inherently rigid insert (16) which is connected to the film bag (18) on a side facing the head part (12). A connecting device (200) is provided by means of which the insert (16) can be interlockingly and/or frictionally connected to the head part (12), wherein the insert (16) has at least one first connecting element (201) of the connecting device (200) and the head part (12) has at least one second connecting element (202) of the connecting device (200).