Warp arrangement and carrier system for an automatic loom
AssigneeNissan Motor Co., Ltd.
InventorMasami Yao
Life of this patent
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Abstract
In a looming system or method, warp yarns are mounted on a loom by the following four steps. At a first step, warp yarns of a full warp beam are drawn through a warp holding unit including a warp dropper unit, a heald unit and a reed. Then, at a second step, the full warp beam is mounted on the loom. At a third step, a warp tension is sensed between the warp beam and the warp holding unit. At a fourth step, the warp holding unit is moved toward the loom and mounted in the loom while rotating the warp beam so as to reduce a deviation of the sensed warp tension from a predetermined standard.
Claims14
A looming system comprising;
- a main weaving mechanism comprising a warp let off motion and a fabric take up motion,
- a warp arrangement comprising a warp beam and a warp holding unit which comprises a weaving component through which warp yarns of said warp beam are drawn in, and a front warp gripper gripping said warp yarns,
- carrier means for carrying said warp arrangement and mounting said warp arrangement on said main mechanism, said carrier means comprising first arm means for carrying said warp beam and second arm means for carrying said warp holding unit and moving said warp holding unit from a separate position to an engaged position at which said warp holding unit is engaged with said main weaving mechanism,
- sensing means for sensing a force applied on said warp yarns by said second arm means while said second arm means is moving said warp holding unit from said separate position to said engaged position, and
- controlling means for causing said warp beam to rotate in accordance with said force sensed by said sensing means while said warp holding unit is moving from said separate position to said engaged position.
A looming method for mounting warp yarns on a loom, comprising
- a first step of preparing a warp arrangement by drawing warp yarns of a warp beam through a warp holding unit and causing said warp yarns to be gripped by said warp holding unit,
- a second step of mounting said warp beam on said loom,
- a third step of sensing a warp tension of said warp yarns while moving said warp holding unit relative to said loom, and
- a fourth step of mounting said warp holding unit on said loom by moving said warp holding unit relative to said loom and rotating said warp beam so as to reduce a deviation of said warp tension from a predetermined standard.
Dependencies are inferred from the claim text.