Rotating Cartridge Flange Dispenser for Viscous Compounds
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Solution Overview
Problem
Existing dispensing devices for multi-component cartridges face issues with uneven load distribution and potential damage due to high forces when handling viscous filling compounds, especially when mixing ratios deviate from 1:1, leading to tilting moments and safety flap damage.
Innovation Solution
A dispensing device with a receiving element that allows the cartridge end flange to be rotated 90° from an assembly position to a dispensing position, ensuring even load distribution and secure fixation through a latching mechanism, and a drive arrangement for moving plungers to discharge the filling compound, minimizing the forces on the support structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a safety flap is used to press the flange from above, then the flange is secured in the discharge device, but the safety flap can be damaged or break due to large forces from viscous filling compounds
Solution Approach 1:
The patent changes the fixation approach from vertical pressing (one-dimensional force application) to rotational engagement (two-dimensional movement). The flange is rotated 90 degrees into a dispensing position where it engages with the receiving element through rotational motion, distributing forces across multiple points and directions rather than concentrating them on a single safety flap pressing from above.
Solution Approach 2:
The patent introduces dynamic rotational movement to transform the static pressing action into a dynamic rotational engagement. The flange rotates from an assembly position to a dispensing position, allowing the system to adapt to varying force conditions during operation while maintaining secure fixation without relying on a fragile safety flap.
2Ease of operation
If the multi-component cartridge is loaded unevenly over the long side of the flange, then the cartridge can be positioned in the dispenser, but a tilting moment is formed causing uneven load distribution and damage to the safety flap
Solution Approach 1:
The patent employs asymmetric geometry in the receiving element and flange design. The receiving element has specific geometric features that guide and constrain the flange during rotation, ensuring proper orientation and symmetric load distribution. The asymmetric shape of the flange and receiving element work together to prevent tilting moments by providing defined engagement points that distribute loads evenly during the rotational movement.
3Ease of operation
If the cartridge end flange is pushed into the receiving element from above, then the cartridge can be inserted, but large forces act on the discharge device at the open end of the holder
Solution Approach 1:
The patent transitions from linear insertion (pushing from above in one dimension) to rotational insertion (rotating into position in two dimensions). The flange rotates 90 degrees from an assembly position to a dispensing position, distributing the insertion forces across different spatial dimensions and reducing peak forces on the discharge device holder.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A dispensing device (1) for a multi-component cartridge comprises a housing (2) in which a receiving element (3) for receiving a cartridge end of the multi-component cartridge is arranged. The cartridge end is located at the inlet side of a first and second reservoir, which are filled with a filling compound and sealed fluid-tight at the cartridge end. A plunger assembly (5) and a drive assembly (6) for moving the plunger assembly (5) are arranged in the housing (2). The drive assembly (6) enables the plunger assembly (5) to move in a discharge direction to discharge the filling compound from the reservoirs of the multi-component cartridge. The receiving element has a pivot axis (10) that is arranged essentially parallel to the discharge direction. The cartridge end inserted into the receiving element (3) can be moved from a mounting position (20) to a discharge position (30) by rotating it about the pivot axis (10).