Yarn tension sensor
A technology of tension sensor and weft yarn, which is applied in the direction of tension measurement, weaving, textiles and papermaking, etc., to achieve the effects of simple structure, improved control and weft insertion success rate, and long service life
Inactive Publication Date: 2008-07-23
WUJIANG WANGONG ELECTROMECHANICAL EQUIP
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Problems solved by technology
The three stages correspond to different tension states and time processes. The existing measurement of the time process can be obtained by measuring the time when the weft reaches the weft catcher and using photoelectric reflection to detect the arrival time of the weft. However, there is no online real-time The parts that measure the weft flight tension are actually more important to measure the weft flight tension than the arrival time of the weft yarn, because knowing the weft flight tension at each stage can correctly understand the whole process of weft flight
Method used
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[0016] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0017] Sensitive element is an element that converts the strain change on the measured object into an electrical signal. There are many types of sensitive elements, among which resistance strain gauge (referred to as resistance gauge or strain gauge) is the simplest and most widely used. At the same time, the strain gauge is tightly bonded to the substrate that produces mechanical strain through the adhesive. When the substrate is stressed and the stress changes, the resistance strain gauge also deforms together, so that the resistance value of the strain gauge changes. As a result, the voltage applied to the resistance changes. The resistance change of this strain gauge is usually small when it is stressed. Generally, this strain gauge forms a strain bridge, which is amplified by a subsequent instrument amplifier and then transmitted. To t...
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Abstract
The invention relates to a filling yarn tension sensor, which comprises a sensing base with a cavity; three rollers which are arranged at the upward side of the sensing base in interval and parallel; a sensitive element which is adhered to the outer wall of the cavity and can convert the strain change into electrical signal; each axis wire splice of the roller at the same cross section is in a shape of del; when the filling yarn runs through each roller, the flying tension can make the force generated from the roller be transferred to the sensitive element, so the sensitive element will deform and output electrical signal. The filling yarn tension sensor can work out the filling yarn tension accurately through the processing for a back-end processing module which is connected with the sensitive element; the filling yarn tension sensor has the advantages of simple structure, long service life and high reliability; when the filling yarn tension sensor is used in measuring a dynamic filling yarn tension in real time, the control to the air-jet loom and the success rate of weft insertion can be improved greatly.
Description
technical field [0001] The invention relates to a measuring part for online real-time measurement of weft yarn tension on an air-jet loom. Background technique [0002] The air-jet loom uses airflow to achieve weft insertion, and the flight process of the weft yarn is divided into a starting stage, a free flight stage and a restrained flight stage. The three stages correspond to different tension states and time processes. The existing measurement of the time process can be obtained by measuring the time when the weft reaches the weft catcher and using photoelectric reflection to detect the arrival time of the weft. However, there is no online real-time The components for measuring the weft flight tension are actually more important to measure the weft flight tension than the arrival time of the weft yarn, because knowing the weft flight tension at each stage can correctly understand the whole process of weft flight. Whether the weft insertion process is normal can be clear...
Claims
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Login to View More IPC IPC(8): G01L5/04G01L5/10D03J1/00
Inventor 周平祝章琛
Owner WUJIANG WANGONG ELECTROMECHANICAL EQUIP