Rotatable Mixing Container with Threaded Piston Drive
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Solution Overview
Problem
Existing container systems for multi-component molding materials face issues with stability, susceptibility to failure, and time-consuming replacement, as well as the inability to vary the mixing ratio during discharge, leading to increased drive energy consumption and potential leaks due to rigid connections and high friction losses.
Innovation Solution
The container system features a rotatable container body with a thread engaging a counter-thread on the piston, allowing for variable volume adjustment without a drive shaft retraction, enabling easy replacement and precise control of mixing ratios through independent rotational speeds of container bodies, reducing wear and improving force transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rigid connections and force-fit connections are used for drive shaft, then connection stability is improved, but friction losses increase and wear occurs leading to potential leaks
Solution Approach 1:
The patent replaces rigid force-fit connections with a dynamic belt drive system. The drive shaft is connected to the piston rod via a belt that allows for relative movement, reducing friction and wear while maintaining reliable force transmission. This dynamic connection eliminates the harmful effects of rigid coupling under high load conditions.
2Reliability
If drive shaft retraction is implemented for container replacement, then connection reliability is improved, but replacement time increases
Solution Approach 1:
The patent separates the drive mechanism from the container by using a belt-driven system. The drive shaft remains stationary while the belt transmits motion to the piston rod, allowing the container to be replaced without retracting the drive shaft. This segmentation enables quick container exchange while maintaining reliable drive connection.
3Device complexity
If fixed mixing ratio is used with common conveying feed, then device complexity is reduced, but adaptability decreases
Solution Approach 1:
The patent employs a universal belt drive system that can accommodate different container configurations and mixing ratios. The same belt-driven mechanism works for various container sizes and component viscosities, providing adaptability without requiring complex specialized conveying systems for each application scenario.
4Reliability
If large forces are transmitted through rigid connections, then propulsion reliability is improved, but wear and friction losses increase
Solution Approach 1:
The patent introduces a belt as an intermediary element between the drive shaft and piston rod. This belt mediator transmits large propulsion forces while reducing direct contact friction and wear compared to rigid force-fit connections. The belt absorbs and distributes mechanical stress, eliminating harmful friction effects while maintaining reliable force transmission.
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
This design enhances the stability and ease of replacement of containers, allows for precise control of mixing ratios, and reduces wear and energy consumption by using a large lever mechanism for force transmission, ensuring reliable propulsion and efficient material handling.
Implementation Method 1
a thread (15) is arranged in the interior of the container (10; 30) which engages in a counter thread (16) of the piston (17) and the piston (17) is mounted so that it can rotate relative to the thread (15)
Implementation Method 2
a rotation of the container body (12; 32) relative to the outlet opening (13; 33) leads to a rotation of the piston (17) relative to the thread (15), such that the variable volume (18) can be varied
Data Source
AI summary
A container (10, 30, 50) is provided for single- or multi-component molding materials. The container has a container body (12, 32, 52) having a constant outer contour in a longitudinal extent of the container (10, 30, 50), a piston (17, 37) movable in the longitudinal direction, and a cover (11, 31) having an outlet opening (13, 33, 53). A volume for a molding material is defined between the piston (17, 37) and the cover (11, 31), the volume being variable in the direction of the longitudinal extent of the container (10, 30, 50). The container distinguishes itself in that the container body (12, 32, 52) is rotatable relative to the outlet opening (13, 33, 53), and the piston (17, 37) thereby pushes out the content of the container (10, 30, 50).