TW565637B - Wefting control device of jet loom - Google Patents

Abstract

The present invention is to provide a wefting control device which suppresses a load torque, so that lifting force of a weft can be suppressed. A distance L1 between a rotation axis 222 of a stepping motor 22 and a first guide loop 24 is smaller than a distance L2 between the rotation axis 222 and a second guide loop 25. When a weft Y1 is in a second yarn path, i.e., when a yarn path changer 23 is in a weft brake position, then yarn bending angle alpha becomes larger than yarn bending angle beta.

Description

565637 6. Scope of patent application. The yarn channel of the weft is changed between the third yarn channel of the bent weft yarn which is larger than the second yarn channel to pull back the weft yarn. 6 · The weft control device of the jet loom according to any one of the claims 1 to 5, wherein the pair of interference systems is a yarn guide loop that penetrates the weft yarn, and a pair of the yarn guide loop is the weft yarn at the first In the case of 1 yarn path, it is at a position that will not interfere with the weft yarn on the first yarn path. 7 · If the weft control device of the jet loom according to item 1 of the patent application scope, wherein the jet loom used to feed the weft according to the jetting action of the weft input nozzle is provided with: a first yarn channel; a yarn channel changing device, The first yarn channel brings a weft insertion resistance greater than the weft insertion resistance, and a yarn channel for changing the weft yarn between the first yarn channel and the second yarn channel; and a weft insertion resistance attaching device, according to which the yarn channel changing device has The movable body that contacts the weft yarn moving between the first yarn channel and the second yarn channel, and increases the weft insertion resistance as the movement of the weft yarn from the first yarn channel becomes larger. To the movable body, the yarn passage changing device has an abutment body that abuts against the weft at least at the side of the second yarn passage and moves between the first yarn passage and the second yarn passage. And a rotary driving device that moves the abutting body according to a rotational force, the movable body moves only between the first yarn channel and the second yarn channel, and the weft tension when it contacts the weft makes movement possible By. 8. The weft control device of the jet loom according to item 7 of the patent application scope, wherein the weft input resistance attachment device is provided with a yarn guide to 565637 6. The scope of the patent application is less on the side of the second yarn channel The weft is penetrated against the weft as the movable body; and an elasticity energizing device imparts elasticity to the yarn guide from the second yarn channel side to the first yarn channel side to attach the weft insertion resistance; and A support device is used to support the fixed end of the elastic energy-enabling device, and the support device is configured to be stationary. 9. The weft insertion control device of the jet loom according to item 8 of the patent application scope, wherein the yarn guide constituting the weft insertion resistance attaching device is arranged downstream of the abutting body. 10. The weft control device of the jet loom according to item 7 of the patent application scope, wherein the weft input resistance attaching device is provided with: a movable body contacting the weft at least on the side of the second yarn channel; an elastic energizing device, The movable body is elastically energized from the second yarn channel side to the first yarn channel side; and a supporting device for supporting a fixed end of the elastic energizing device, and the supporting device is a non-moving arranger.