Single-Sided Lever Locking for Nonwoven Winder Shafts
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Solution Overview
Problem
Existing fleece winders face challenges with complex locking mechanisms for winding shafts, which can lead to uncontrolled movement and safety risks due to energy loss in drive elements, complicating integration and increasing the risk of injury and damage.
Innovation Solution
A lever arrangement is integrated into the fleece winder that locks the winding shaft from one side, utilizing the shaft's weight to maintain the lock and prevent release, even without continuous drive element force, allowing for simple rotational movement and energy-efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If double-acting clamp devices are used to lock the winding shaft from both sides, then the locking reliability is improved, but the device complexity increases and the integration difficulty increases
Solution Approach 1:
The patent extracts the locking action from a complex double-acting system and implements it through a single lever arrangement that engages the winding shaft from one side only. The lever arrangement includes a lever arm with a locking element that can be actuated by a simple drive element, eliminating the need for complex dual-sided clamping mechanisms while maintaining reliable locking.
Solution Approach 2:
Instead of applying locking force from both sides of the winding shaft (conventional approach), the patent inverts the approach by locking from one side only. The lever arrangement is designed such that the single locking action is sufficient to prevent uncontrolled movement, simplifying the overall device architecture.
2Reliability
If double-acting clamp devices are used to lock the winding shaft from both sides, then the locking reliability is improved, but the integration difficulty into the nonwoven winder increases
Solution Approach 1:
The patent simplifies integration by extracting the essential locking function and implementing it through a compact lever arrangement that can be easily integrated into the nonwoven winder's existing structure. The single-sided locking mechanism requires fewer mounting points and less complex alignment than dual-sided clamps.
3Extent of automation
If a drive element is used to actuate the clamp, then the locking operation is automated, but the safety risk increases due to potential drive failure causing uncontrolled movement
Solution Approach 1:
The patent converts the potential harm of drive failure into a beneficial self-locking effect. The lever arrangement is designed with mechanical geometry such that when the drive element releases, the weight of the winding shaft and the lever's mechanical advantage automatically maintain the locked position, preventing uncontrolled movement even without continuous drive force.
Solution Approach 2:
The lever arrangement incorporates preliminary anti-action through its mechanical design, where the geometry of the lever arms and locking elements creates a self-reinforcing locked state that resists unintended movement. The system is pre-configured to counteract any forces that might cause release, including the weight of the winding shaft itself.
4Reliability
If continuous force is applied by the drive element to maintain the lock, then the locking reliability is improved, but the energy consumption increases
Solution Approach 1:
The lever arrangement is designed to be self-sustaining once locked. The mechanical geometry creates a stable equilibrium position where the locked state is maintained without continuous energy input from the drive element. The system uses its own mechanical structure and the weight of the winding shaft to maintain the locked position, eliminating the need for continuous power consumption.
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 secure, energy-efficient, and space-saving locking mechanism that prevents uncontrolled movement of winding shafts, enhancing safety and reducing the risk of injury and damage, while allowing for automatic winding operations.
Implementation Method 1
the levers are arranged such that the weight of the winding shaft is prevented from introducing a (release) force into the lever arrangement that would be suitable for releasing the lock
Implementation Method 2
The second lever pivots in such a way that a free end of the second lever and the pivot joint between the two levers redirect the force of the winding shaft towards a rotary bearing of the first lever in a direction essentially perpendicular to the path of movement of this rotary bearing
Data Source
Figure 1
Figure 2a~2b
Figure 3~4
AI summary
A device (200) is designed to be integrated into a nonwoven fabric winder (1) so that the winder can use the device (200) to move a winding shaft (20) from a waiting position (3) to a winding position (4) and/or a winding position (5). The device has a lever arrangement (220, 230, 240) configured such that, in a locked state, it engages the winding shaft (20) from one side in such a way that, viewed in the longitudinal direction of the winding shaft (20), the lever arrangement (220, 230, 240) is open to one side of the winding shaft (20), and the levers are arranged such that the weight of the winding shaft (20) is prevented from exerting a force on the lever arrangement (220, 230, 240) that would release the lock. A nonwoven winder (1) is configured to wind a first winding shaft (20) with an incoming nonwoven and to bring a second winding shaft (20) into a waiting position (3). It includes the device (200).This is attached to a conveying section of the nonwoven winder (1) in a waiting state such that its lever arrangement (220, 230, 240) can clamp the second winding shaft (20). The conveying section is designed to move the clamped second winding shaft (20) from the waiting position (3) towards the winding position (4) and/or winding position (5) of the nonwoven winder (1).