JPH027892Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a weft processing device for a shuttleless loom.

BACKGROUND OF THE INVENTION Generally, a weft yarn whose length has been measured by being wrapped in a so-called drum length measuring device is inserted by a main nozzle into a weft guide path formed by a large number of weft guide members erected on a sleigh. If this weft insertion is performed normally, the loom continues to operate. However, if the weft is not inserted normally, the weft insertion error is detected by the weft detection device and the operation of the loom is stopped. However, due to the structure of the loom, the weft threads that have been inserted incorrectly are directly inserted into the woven fabric, and remain as weaving scratches within the woven fabric.
Therefore, it is necessary to remove the misplaced yarn, but this work is done after releasing the operational connection part, that is, the clutch, of the drum length measuring device, which is operatively connected to the machine drive source, and then moving the machine machine to a specified position. This requires the steps of reversing the thread and pulling out the erroneous thread.

Thereafter, the drum length measuring device must be rotated to match the phase with the machine base, and the clutch must be connected. It must be done in good condition. Therefore, in the past, the weft yarn pulled out from the drum was held in hand to prevent the weft yarn from coming off the locking pin, but such work was troublesome, and the weft yarn was held in the locking pin. There was also a risk that it would come off.

In particular, when weft yarns supplied from a plurality of weft supply units are inserted, the above-mentioned defects become noticeable. That is, for example, when inserting weft threads from two weft supply sections, when rotating the drum length measuring devices provided for each weft supply section to match the phases, one of the drum length measuring devices must be locked. The pin sinks and the weft thread is released from this locking pin. Therefore, each of the weft threads wound around both drum length measuring devices must be pulled by hand as described above, but this operation is cumbersome and the weft threads also come off from the protruding locking pins. There is a risk.

Purpose This invention was made to eliminate the above-mentioned defect, and its purpose is to align the phase of the drum length measuring device and the machine base after reversing the machine base due to a weft insertion error, etc. An object of the present invention is to provide a weft processing device for a shuttleless loom that can easily and reliably process the weft wound around the drum.

Embodiment An embodiment of the present invention applied to a fluid jet loom will be described below with reference to the drawings. 1 is a drum length measuring device of a winding length measuring method, and the length of the weft thread measured by the device is Y passes through a guide member 3 provided on the frame 2 of the loom from a main nozzle 5 mounted on the slay 4 into a guide path 6a formed by a large number of weft guide pieces 6 arranged in parallel on the slay 4. The weft is inserted. Then, the main nozzle 5, which constitutes the weft insertion mechanism, together with the slay 4, which moves in the direction of the arrow in the figure during reed beating, moves to the position shown by the chain line in the same figure, and the weft yarn Y inserted from the main nozzle 5 is transferred to the reed beating. At the same time, they are driven into the front of the woven fabric W and cut by the cutter 7. After beating the reed, the sley 4 returns to the weft insertion standby position shown by the solid line in the figure.

In this embodiment, a suction nozzle 8 is provided on the frame 2 of the machine stand near the weft path from the drum length measuring device 1 to the weft end on the main nozzle 5 side. When a weft insertion error occurs, for example, when the tip of the weft Y inserted into the guide passage 6a protrudes from the guide passage 6a, this weft insertion error is detected by the weft detection device, and the weft insertion error is detected by the weft detection device. The machine is stopped based on the detection results. At this time, the weft yarn that has been inserted incorrectly (hereinafter referred to as the erroneous yarn) is driven into the woven fabric W, and the next weft yarn is inserted into the guide path 6a. Therefore, in order to remove the erroneous yarn from the woven fabric W, the machine must be reversed. In this case, in order to prevent the drum length measuring device 1 from being reversed, it is necessary to release the operational connection between the device 1 and the machine drive source, that is, the clutch. When the machine base is reversed in this state, a phase difference occurs between the length measuring device 1 and the machine base. Therefore, it is necessary to rotate the drum length measuring device 1 in the normal direction to match the phase of the machine.

Therefore, the weft yarn 1 is cut between the guide member 3 and the main nozzle 5, and the tip of the weft yarn Y continuing to the drum length measuring device 1 side is sucked into the suction nozzle 8. By the way, in the drum length measuring device 1, a pair of locking pins 1a (only one protrudes in the drawing) alternately appear and disappear. A locking pin sunk in the drum projects from the hole 1b, and the weft is locked by the locking pin. In this state, even if the drum length measuring device 1 side is rotated in the normal direction for phase alignment, the weft yarn Y will not reach the suction nozzle 8.
Since the length measuring device 1 is pulled in the direction of being pulled out from the length measuring device 1, it is securely locked to the locking pin. Furthermore, even if the locking pin in the protruding state comes out or disappears as the drum length measuring device 1 rotates in the normal direction, the weft that was locked by the locking pin will be reliably pulled out by the suction nozzle 8. , there is no risk of it becoming tangled on the drum of the length measuring device 1.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and for example, the suction direction or the arrangement location of the suction nozzle 8 may be changed as appropriate without departing from the spirit of the present invention. Furthermore, the present invention can be implemented even when weaving is carried out by inserting weft yarns supplied from a plurality of weft supply units, that is, when a plurality of drum length measuring devices are used, and the effects in this case are even greater. It becomes noticeable.

Effects As detailed above, the present invention has the advantage of being able to easily and reliably dispose of the weft wound around the drum length measuring device when the machine is reversed due to a weft insertion error, etc. have an effect.

[Brief explanation of the drawing]

The drawing is a perspective view showing an embodiment embodying the present invention. 1...Drum length measuring device, 8...Suction nozzle.

Claims (1)

[Scope of utility model registration request] In a shuttleless loom in which a weft whose length has been wrapped and measured by a length measuring mechanism of a winding length measuring method is inserted by a weft inserting mechanism, a weft path from the length measuring mechanism to a warp end on the weft inserting mechanism side. 1. A weft processing device for a shuttleless loom, characterized in that a suction nozzle is disposed near the loom, the suction nozzle being activated at least when the loom is stopped and sucking the end of the weft fed out from the length measuring mechanism.