Glue Valve Stroke Adjustment Without Stop Part Rotation
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Solution Overview
Problem
Existing valves for flowable media face challenges in aligning the stop part of the valve lift adjustment unit, coil carrier, and closure element due to manufacturing tolerances, leading to sub-optimal performance and unwanted side effects from changes in rotational position.
Innovation Solution
A valve design where the stop part is only moved axially during rotation of the adjustment means, without rotating, ensuring a fixed relative position between the stop part and closure member, and integrating the valve lift adjustment unit with the coil carrier for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the stop part is moved axially by rotation of the adjusting means, then the valve lift can be adjusted, but the stop part also rotates which changes the magnetic field and closing force
Solution Approach 1:
A new component (adjusting mechanism with decoupling function) is introduced between the adjustment means and the stop part. This intermediary mechanism allows axial movement of the stop part while preventing rotational movement, thereby decoupling the two motions and maintaining consistent magnetic field and closing force during adjustment.
Solution Approach 2:
The adjusting mechanism is divided into separate functional components: one that allows axial movement (for valve lift adjustment) and another that constrains rotational movement. This segmentation enables independent control of position adjustment while maintaining rotational stability of the stop part.
2Ease of manufacture
If multiple components are assembled to form the valve, then the valve can be manufactured with modular design, but alignment of components is difficult due to manufacturing tolerances
Solution Approach 1:
The coil carrier and valve lift adjustment unit are merged into a single integrated component. This combination eliminates the alignment interface between these two components, removing the accumulation of manufacturing tolerances and ensuring precise alignment while maintaining modular manufacturability.
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 prevents changes in rotational position that could affect magnetic fields and closing forces, ensuring consistent performance and self-alignment of components, reducing manufacturing tolerances' impact and improving valve behavior.
Implementation Method 1
a closure member which can be moved in a valve interior by an electromagnet
Implementation Method 2
individual permanent magnets are attached to the stop part, which interact with permanent magnets on the closure member to apply a closing force
Data Source
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AI summary
The invention relates to a valve for flowable media, in particular a glue valve, comprising a valve housing (25) and a closing element (32), in particular a valve plunger, which is movable in a valve interior by an electromagnet and bears against a valve seat (36) with a closing piece in the closed position of the valve (14), and a valve stroke adjustment unit (44) for adjusting the valve stroke, which includes an elongated stop element (49) arranged at least partially in the valve interior, the axial position of which can be changed in the valve interior by rotation of an adjusting means (47) of the valve stroke adjustment unit (44), and which limits the movement of the closing element (32) in the direction of the valve stroke adjustment unit (44). The invention is characterized in that the valve stroke adjustment unit (44) is designed such that the stop element (49) is moved only axially when the adjusting means (47) is rotated, without the stop element (49) rotating with it.