Reciprocating Pump Rotary Drive Reduces Adhesive Maintenance
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Solution Overview
Problem
Existing pumping devices for viscous media, such as adhesives, are complex and require frequent maintenance, leading to interruptions in labeling processes, especially when handling hot glue, as they necessitate replacement during maintenance, indicating a need for a simpler, low-maintenance solution.
Innovation Solution
A pumping device utilizing a cylinder and piston unit operating on a reciprocating piston principle, driven by a rotating drive shaft connected to a motor, with a positive guide converting the rotation into alternating lifting and return stroke movements, reducing wear and maintenance needs, and allowing the device to be easily oriented for efficient viscous medium conveyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If linear drives are used to move the pump piston up and down, then the pumping function is achieved, but the device complexity increases and maintenance requirements increase
Solution Approach 1:
The patent replaces linear drives with a rotary drive system where a drive shaft rotates to simultaneously drive the piston unit and cylinder unit. This substitution of mechanical drive systems reduces complexity by eliminating the need for separate linear actuation mechanisms while maintaining the pumping function through rotational motion conversion.
Solution Approach 2:
The patent merges the drive functions for the piston unit and cylinder unit into a single rotary drive shaft. Instead of using separate linear drives for each component, the unified rotary drive simultaneously accomplishes both functions, reducing overall device complexity and the number of moving parts that require maintenance.
2Ease of operation
If intricate mechanics are used to generate linear movement of the pump piston, then the pumping function is achieved, but the device complexity increases and maintenance frequency increases
Solution Approach 1:
The patent replaces complex linear movement mechanics with a simpler rotary drive system. The drive shaft's rotation directly drives the piston unit and cylinder unit without requiring intricate linear actuation mechanisms, thereby reducing the number of components that wear and require maintenance, improving overall reliability.
3Reliability
If frequent maintenance is performed on pump devices, then pump failure is prevented, but the labeling process is interrupted
Solution Approach 1:
The patent employs a rotary drive system that eliminates the need for frequent maintenance of linear drive components. By reducing wear on moving parts through the simplified mechanical architecture, the pump can operate continuously without interruption to the labeling process, maintaining both reliability and productivity.
4Reliability
If pump replacement is performed during maintenance, then pump failure is prevented, but the labeling process is interrupted
Solution Approach 1:
The patent's rotary drive system reduces wear on critical components, extending the operational lifespan of the pump. This minimized wear pattern allows the pump to continue operating without replacement during the labeling process, eliminating time loss while maintaining reliability through reduced failure risk.
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
The solution provides a simpler, low-maintenance pumping device that effectively conveys viscous media with reduced wear and operational complexity, enabling continuous labeling processes without the need for frequent device replacement.
Implementation Method 1
a heating element (9), which heats the viscous medium in the annular channel
Data Source
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AI summary
A pumping device (1, 1a) and a method for conveying viscous media, in particular adhesives, are disclosed. The pumping device (1, 1a) comprises a cylinder unit (20) and a piston unit (22) at least partially enclosed by the cylinder unit (20), which together form a conveying device (2) operating on the reciprocating piston principle. Furthermore, the pumping device (1, 1a) comprises at least one drive shaft (7) connected to a motor, via which the cylinder unit (20) and the piston unit (22) are rotatable about a common axis, and a positive guide mechanically coupled to the conveying device (2), by means of which the rotary movement of the conveying device (2) can be converted into an alternating stroke and return stroke of the piston unit (22) for pumping the respective viscous medium.