Method for removing erroneously introduced weft yarns and air jet loom
By eliminating the synchronization of the air-jet loom drive and adopting a small-angle shed design and independent drive, the automatic removal of weft yarns is achieved, solving the problems of fabric growth points and removal complexity when weft yarns break, and improving weaving efficiency.
CN117716079BActive Publication Date: 2026-06-26LINDAUER DORNIER GMBH
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Patent Information
- Application Number
- CN202280048737.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-07-09
- Filing Date
- 2022-06-10
- Publication Date
- 2026-06-26
- Estimated Expiration
- 2042-06-10
AI Technical Summary
Technical Problem
Existing air-jet looms are prone to creating fabric growth sections when the weft yarn breaks, and the weft yarn removal process is complicated, affecting weaving efficiency.
Method used
By eliminating the synchronization between the first and second drive units in the air-jet loom, independently controlling the shedding mechanism and reed, and adopting a small-angle shed design and independent drive, the automatic removal of the weft yarn is achieved.
Benefits of technology
It reduces the growth points in the fabric, improves the success rate of weft yarn removal, shortens the downtime after weft yarn breakage, and improves weaving efficiency.
✦ Generated by Eureka AI based on patent content.
Abstract
A method for removing a weft thread which has been introduced incorrectly on an air-jet weaving machine and a corresponding air-jet weaving machine are proposed, wherein a first drive device drives an opening mechanism and wherein a second drive device drives a sley (36) together with the guide bars (32). A control mechanism operates the first drive device and the second drive device such that they run synchronously with one another in a normal weaving operation. The method according to the invention comprises the following steps: detecting a weft thread which has been introduced incorrectly into the shed with at least one warp thread stop motion; cancelling the synchronization between the first and second drive devices by means of the control mechanism; operating the second drive device by means of the control mechanism such that the guide bars (32) assume a first swivel position which swivels away from the warp-weft thread interlacing point (66); operating the first drive device by means of the control mechanism such that the opening mechanism converts the shed into a first open position with a relatively small opening angle (a); removing the incorrectly introduced weft thread on the introduction side or the exit side; cutting off the incorrectly introduced weft thread on the introduction side; and removing the incorrectly introduced and cut-off weft thread.
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