Spindle-Like Discharging Rod for Simultaneous Multi-Component Metering
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Solution Overview
Problem
Existing metering and mixing apparatuses for multi-component substances face challenges in ensuring simultaneous and controlled discharge of components, particularly in maintaining a consistent discharge ratio and preventing premature discharge of one component without the other, which affects the setting time and quantity of the mixed compound.
Innovation Solution
A driving device with a spindle-like discharging rod featuring a spiral-toothed spindle section and an engagement element, coupled with a transmission unit that includes an internally toothed driven wheel, allows for independent drive force coupling to a self-cutting piston, ensuring forward propulsion without axial force, and includes a braking element to manage axial motion and prevent premature discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional piston drive mechanism is used, then the piston can be propelled forward, but the discharge ratio control and simultaneous discharge of multiple components cannot be maintained
Solution Approach 1:
The drive mechanism is segmented into multiple independent spindle-like discharging rods, each capable of independent rotation and engagement with its respective piston. This segmentation allows precise control of each component's discharge timing and ratio while maintaining simultaneous operation across multiple components.
Solution Approach 2:
The system employs dynamic engagement and disengagement of the spiral-toothed spindle sections with the pistons. The spindle sections can rotate independently and engage or disengage from the pistons as needed, enabling flexible control of discharge timing and ratio while ensuring reliable simultaneous discharge when required.
2Speed
If axial force is applied to propel the piston, then forward propulsion is achieved, but premature discharge and loss of control occur
Solution Approach 1:
The conventional axial force-driven piston mechanism is replaced with a spindle-like rotation mechanism. The spiral-toothed spindle section rotates to propel the piston forward through threading engagement, eliminating the need for axial force application and preventing premature discharge while maintaining controlled piston advance speed.
Solution Approach 2:
The spindle-like discharging rod rotates in a periodic manner, engaging and disengaging the spiral-toothed section with the piston at controlled intervals. This periodic action enables precise control of piston advance speed and discharge timing, preventing premature discharge while maintaining reliable operation.
3Ease of operation
If the discharging rod is designed for easy retraction, then reloading becomes simple, but resistance during discharge may increase
Solution Approach 1:
The discharging rod is designed with dynamic engagement characteristics where the spiral-toothed spindle section can rotate freely during discharge to minimize resistance, while the engagement element maintains secure connection with the piston. During retraction, the same rotational capability allows easy disengagement and withdrawal without requiring excessive force, thus achieving both easy operation and effective discharge.
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 solution enables reliable simultaneous discharge of multiple components, maintaining the desired ratio and preventing premature discharge, thus controlling the setting time and quantity of the mixed compound effectively, while allowing easy retraction of the discharging rod for reloading without resistance.
Implementation Method 1
at least one discharge piston has a threading which by rotating can create forward propulsion of this discharging piston
Implementation Method 2
the transmission unit has an internally toothed driven wheel which is matched to the spiral toothing of the spindle section
Data Source
AI summary
A driving device of a metering and mixing apparatus for multi-component substances has at least two cartridge holders for holding interchangeable cartridges, a discharging apparatus for the simultaneous discharging of the substance components from the cartridges by discharging pistons entering the cartridge holder or cartridges, where at least one discharging piston has a thread which can generate a forward propulsion of the discharging piston, and a mixing apparatus for discharging the substance components in mixed form. A transmission unit connects a drive motor, and a spindle-like discharging rod of the discharging piston is provided with the thread, a rear part of the longitudinal extent of which discharging rod has a spiral-toothed, non-self-locking spindle section, and at a front end of which has an engagement element for engaging in the discharging piston.