Let-off control method and let-off control device for loom including temple device having automatic temple position switching mechanism
A technology of automatic switching and control methods, applied in looms, textiles, textiles and papermaking, etc., can solve the problems of weaving defects, excessive delivery, instability, etc., and achieve the effect of preventing poor weft insertion.
Active Publication Date: 2014-04-02
TSUDAKOMA KOGYO KK
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Problems solved by technology
[0015] In addition, due to the rapid change of warp tension, the control of the feeding amount becomes too large, and the control becomes unstable (shaking state), which may cause fabric defects.
Method used
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Embodiment Construction
[0095] figure 1 A loom for cord weaving using the present invention is shown. In general cord weaving looms, there are independently provided: a yarn supplying section 1 that supplies a plurality of warp yarns 1a, 1a... as a horizontal row of warp yarn rows 1b (hereinafter referred to as "warp yarn sheets"); Shown) through the warp yarn sheet 1b and as the weaving weaving device 2 of the woven cloth 2a; and the take-up device 3 for winding the woven cloth 2a. Hereinafter, each part of the cord weaving used as the woven fabric 2a and the loom for cord weaving will be described in detail.
[0096] The carcass fabric is a type of fabric for rubber reinforcement used to manufacture a carcass layer that becomes the skeleton of a rubber tire. Not shown in the figure, the cord weave includes a cord weave portion having a very low weft density; and a plain weave portion having a high weft density relative to the cord weave portion, two weaving portions having greatly different weft ...
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In a warp let-ff control method performed by a let-off device of a loom, the loom used for weaving a fabric (2a) having two or more weave sections with different densities, the loom including the let-off device that controls an amount of warp let-off by performing let-off control in which a let-off motor (5c) is driven in accordance with a detected tension and a target tension, and a temple device (40) including a temple (41) that is displaceable between an operating position and a standby position, the temple device automatically switching a position of the temple between the two positions in accordance with a weft density of one of the weave sections to be woven, the method includes controlling driving of a let-off motor with a control mode during a control period including a period during which the temple is displaced, the control mode adjusting an amount of warp let-off in a direction such that a change in a warp tension due to the displacement of the temple is cancelled out, the control mode being different from a control mode for performing let-off control in a normal operation of the loom after the control period.
Description
technical field [0001] The present invention relates to a method and a device for controlling warp let-off conditions in a loom provided with a temple device having a mechanism for automatically switching temple positions. More specifically, a loom for weaving a fabric including two or more weaving portions having different densities (for example, a cord weaving in which the weaving portion is composed of a cord weave portion and a plain weave portion) is targeted. This loom is equipped with: a delivery device, which controls the drive of the delivery motor based on the basic speed obtained based on the number of rotations of the loom, thereby controlling the amount of warp delivery (delivery speed); and a temple device, which has a temple. (such as a ring temple) and the actuator as a driving source to make the temple move and displace between the active position and the standby position (such as an automatic lifting mechanism). And, the temple device automatically switches ...
Claims
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IPC IPC(8): D03D49/06D03D51/12D03J1/22
CPCD03J1/22D03D49/10
Inventor 伊藤直幸
Owner TSUDAKOMA KOGYO KK