Spindle Yarn Nipping Device Sealing Mechanism
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Solution Overview
Problem
Conventional thread clamping devices for spinning or twisting spindles allow contaminants to penetrate, leading to potential jamming of the movable clamping element due to frictional forces, which can hinder the device's operation.
Innovation Solution
A thread clamping device with a stop surface that seals the gap between the first and second clamping elements in the open position, preventing contaminants from entering the interior space and using a design that includes a stop surface for the second clamping element to ensure a secure sealing contact, potentially incorporating a sealing element like a ring for enhanced sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gap is present between the first and second clamping elements to enable relative movement, then the movable clamping element can move freely between closed and open positions, but contaminants can penetrate into the interior space surrounding the relief elements
Solution Approach 1:
The interior space surrounding the relief elements is segmented from the exterior environment by introducing a sealing element (such as an O-ring or lip seal) that creates a barrier while allowing the second clamping element to move. This segmentation isolates the relief elements from contaminants while preserving the necessary movability of the clamping element.
Solution Approach 2:
A sealing element acts as an intermediary between the interior space containing the relief elements and the exterior environment. This intermediary component prevents contaminant penetration while allowing the second clamping element to move between positions, thus resolving the contradiction between protectiveness and movability.
2Reliability
If the second clamping element is held in the closed position by a loading force, then the thread is securely clamped at standstill, but the relief elements must overcome this loading force to open the clamping gap during rotation
Solution Approach 1:
The clamping device utilizes dynamic principles by employing relief elements (such as balls or springs) that respond to centrifugal force during rotation. At standstill, the loading force holds the clamping element closed for secure threading. During rotation, the relief elements dynamically adjust based on centrifugal force, automatically overcoming the loading force to open the clamping gap when needed.
Solution Approach 2:
The system changes operational parameters based on rotational speed. At low speeds or standstill, the loading force dominates to maintain secure clamping. As rotational speed increases, centrifugal force on the relief elements increases, changing the force balance to automatically open the clamping gap. This parameter-based control resolves the contradiction between secure clamping and easy opening.
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 effectively prevents contamination from entering the device, ensuring reliable operation by maintaining the movable clamping element's functionality and providing a self-cleaning mechanism through centrifugal force-driven air flow, thus extending the device's service life.
Implementation Method 1
with at least one relief element, which exerts a centrifugal force-related relief force on the second clamping element when the thread clamping device rotates
Implementation Method 2
the second clamping element in its open position sealingly abutting the stop surface via at least one of its outer surfaces, in order to prevent contamination from penetrating
Implementation Method 3
providing a self-cleaning mechanism through centrifugal force-driven air flow
Data Source
Figure 1
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Figure 3
AI summary
The device has a load element (4) that applies biasing force to clamping element (2). A discharge element (5) exerts centrifugal force on clamping element that is operated against biasing force, during the rotation of main portion. The clamping element is shifted from closing position to open position due to rotation speed of main portion. An outer surface (8) of clamping element is engaged with stop surface (7) in the open position of clamping element, such that penetration of impurities into an inner space (9) surrounding the discharge element is prevented.