Synthetic Yarn Splicer with Dynamic Clamping and Two-Stage Entangling
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Solution Overview
Problem
Existing synthetic yarn splicers fail to effectively shorten the length of yarn ends protruding from entangled portions, leading to inefficiencies in yarn processing.
Innovation Solution
A synthetic yarn splicer with a yarn splicing portion, clamping portions, and a moving mechanism that performs entangling and stretching processes to shorten yarn ends, utilizing cam mechanisms for precise movement and cutter synchronization for efficient cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the yarn ends are entangled by a single entangling process, then the splicing is completed quickly, but the yarn ends protruding from the entangled portion remain long
Solution Approach 1:
The entangling process is divided into two distinct stages: a first entangling process that initially binds the yarn ends together, and a second entangling process that further entangles the yarn ends after they have been pulled through by the moving mechanism. This segmentation allows the yarn ends to be progressively shortened while maintaining splicing efficiency.
Solution Approach 2:
The first entangling process performs a preliminary entangling of the yarn ends before the moving mechanism pulls them through. This preliminary action creates an initial bound portion that guides the subsequent pulling and second entangling processes, ensuring that the yarn ends are properly positioned for effective shortening.
2Manufacturing precision
If the yarn is stretched before entangling, then the entangled portion becomes more uniform in thickness, but the processing time increases
Solution Approach 1:
The stretching process is performed as a preliminary action before the first entangling process. By pre-stretching the yarn ends to remove slack and make them taut, the subsequent entangling processes produce a more uniform entangled portion without requiring additional time during the main splicing operation.
Solution Approach 2:
The stretching process changes the physical state of the yarn ends by applying tension to remove slack and make them taut. This parameter change in yarn tension before entangling ensures more uniform distribution of yarn material in the entangled portion, improving precision without significantly increasing overall processing time.
3Force
If the clamping force is increased to hold yarns firmly, then the yarns are securely clamped, but the yarn ends cannot be pulled and moved for shortening
Solution Approach 1:
The clamping portions are designed with dynamic, time-varying clamping forces. During the pulling and moving processes, the clamping force is reduced to allow yarn ends to be pulled through, and then increased again during the entangling processes to secure the yarns. This dynamic adjustment resolves the contradiction between secure clamping and ease of movement.
Solution Approach 2:
The moving mechanism implements periodic cycles of clamping and releasing. The clamping portions periodically release to allow yarn ends to be pulled through for shortening, then re-engage to secure the yarns for entangling. This periodic action pattern enables both secure clamping and easy movement at different stages of the splicing process.
Data Source
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AI summary
A splicer (66) includes a yarn splicing portion (66a), a first clamping portion (123), a second clamping portion (133), and a moving mechanism (170). The moving mechanism (170) performs a first moving process of moving a first portion (K1) clamped by the second clamping portion (133) before releasing in a first yarn (YA) and a second yarn (YB) to one side in a penetrating direction by moving the first clamping portion (123) to one side in the penetrating direction while a clamping operation is performed by the first clamping portion (123) and a clamping operation of the second clamping portion (133) is released. The yarn splicing portion (66a) performs a first entangling process of entangling the first yarn (YA) and the second yarn (YB) before the first moving process and a second entangling process of entangling the first portion (K1) after the first moving process.