Loom Warp Stop Motion Holding Device Vibration Fixation
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Solution Overview
Problem
Existing holding devices for intermediate supports in warp stop motions of weaving machines are prone to stress and vibration-induced failures due to inadequate fixation, leading to reduced service life.
Innovation Solution
A holding device with a supporting part and a clamping part that provide two-dimensional contact with the thread support tube, ensuring a form-fitting attachment and reduced movement play, utilizing a clamping element that can pivot for easy assembly and featuring a recess that encloses the thread support tube in multiple directions, thereby enhancing stability and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a holding device with support element and clamping element is used to attach the intermediate support to the thread support tube, then the support device can be securely fixed, but the holding device is subject to considerable stress and strain due to vibrations and movements during operation, reducing its service life
Solution Approach 1:
The patent transitions from a conventional single-point or linear contact fixation to a two-dimensional surface contact between the holding device and the thread support tube. The support element and clamping element create a recess that receives the tube with extensive surface contact, distributing stresses across a larger area and preventing stress concentration that would lead to premature failure under vibrational loads.
Solution Approach 2:
The holding device is divided into functionally distinct support element and clamping element that can be attached separately. This segmentation allows each element to be optimized for its specific function while sharing the mechanical load, and enables easier maintenance or replacement of individual components without replacing the entire holding device.
2Object-affected harmful factors
If the clamping element is positioned below the plane tangential to the upper radii of the warp thread guide tubes to reduce the risk of warp thread contact and damage, then thread damage is prevented, but the holding device still experiences considerable stresses from vibrations and movements
Solution Approach 1:
The patent extends the contact interface from a narrow clamping line to a broad two-dimensional surface encompassing the thread support tube within the recess. This expanded contact area in multiple dimensions provides both thread protection (by maintaining proper positioning) and vibration resistance (through distributed surface contact), simultaneously addressing both requirements.
3Reliability
If the recess formed by the support element and clamping element is completely closed in the circumferential direction around the thread support tube, then the holding device achieves form-fitting attachment and reduced movement play, but the assembly and disassembly becomes more difficult
Solution Approach 1:
The holding device is segmented into support element and clamping element that can be attached and detached independently. This allows the recess to be formed as a complete enclosing structure for precise positioning, while the segmented construction enables practical assembly and disassembly operations without requiring the removal of a single monolithic component.
Solution Approach 2:
The clamping element is designed with dynamic attachment capabilities, allowing it to be moved into position to complete the enclosing recess structure during assembly, and subsequently detached for maintenance or replacement. This dynamic approach enables the recess to provide form-fitting attachment during operation while maintaining ease of assembly and disassembly.
Data Source
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AI summary
The holding device (40) has a clamping part (41) fastened on a support part (42), which is arranged for fastening on a thread support tube (26) of a warp stop motion. A holding surface (70) is provided on the clamping part and another holding surface (71) is provided on the support part, which is adjacent to a recess (58) for the thread support tube. Each holding surface is rested flat on the thread support tube, and on the side of a longitudinal center plane (M) by the thread support tube. The thread support tube is completely enclosed in the recess by the clamping part and the support part. An independent claim is included for a supporting device for a warp stop motion, particularly for supporting a contact rail of the warp stop motion.