It is simple in structure, satisfactory to perform, and with low cost, to use a step motor drive for the let off motion device in a loom.
用步电机驱动的织机送经装置具有结构简单，性能优良，成本低廉，织物适应范围广等优点。
In the wide weaving machine, the difference of warp tension on two beams are reduced by using a differential gear train of let-off motion double beams (side by side).
在阔幅织机上，以周转轮系差速器作双轴送经的方法可以通过机构自动调节来缩小两织轴的经纱张力差异。
The warp let... off motion allows the feeding of warp yarn under uniform tension and at the proper rate.
送经机构可以使送出的经纱保持均匀的张力并保证准确有送经量。
The difference of the length of the rest yarn can be overcome by the use of two sets of electronic let-off motion respectively used to control the let-off of two beams.
以两套电子送经机构分别控制丙只织轴的送经运动，是克服余纱长度不等的措施。
It is the function of the let - off motion to control the warp tension, so, to achieve the required result, both the take - up and the let - off motions must be functioning correctly.
控制经纱张力是送经机构的功能，因此要获得理想的结果，卷取机构和送经机构必须正常工作。
Characteristics: Oil soaking CAM and connecting bar system; sinker with an eyelet to take unable-closed steel wire; let-off boxes control two rollers for positive let-off motion.
特点：油浸式凸轮连杆机构，地梳固定不摆动，带耳沉降片穿防闭钢丝，送经箱体分别控制二辊罗拉积极送经。
Compared with the traditional method, this method simplifies let-off and take-up mechanism, improves automatic level and synchronous character of let-off and take-up motion.
与传统的方法相比，该方法使送经卷取机构大大简化，自动化程度高，送经卷取同步性能好。
The above-said let-off motion can meet the requirement of weft on warp let-off, and more the let-off can be fine tuned as well, keeping constant tension of warp let-offs.
该机构不仅能满足织物纬密对每纬送经量的要求，而且能根据经纱张力的变化对送经量进行微调，使送经量和经纱张力都保持基本恒定。
The above-said let-off motion can meet the requirement of weft on warp let-off, and more the let-off can be fine tuned as well, keeping constant tension of warp let-offs.
该机构不仅能满足织物纬密对每纬送经量的要求，而且能根据经纱张力的变化对送经量进行微调，使送经量和经纱张力都保持基本恒定。
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