JPS60110953A - Rotary drum type weft yarn storage apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotating drum-type weft storage device for a shuttleless AM, in which a locking protrusion is provided on the outer edge of the side surface of the yarn storage drum, and the weft is moved by the action of a yarn path converter. It is an object of the present invention to provide a weft storage device which is secured to a protrusion and wound and stored around a drum.

In a rotating drum type weft storage device, a means is required to hold the ends of continuously supplied weft yarns when the weft yarns are wound around the drum. The weft end holding means that has been commonly used in the past includes a brush or a comb-shaped ring provided on the outer edge of the yarn storage drum on the nozzle side. This has the drawback that good processing conditions cannot be obtained because of the high resistance to loosening.

In addition, a method has been proposed in which a projection is protruded and retracted from inside the drum at the outer peripheral end of the yarn storage drum, and the weft is retained by the projection.However, with such a structure, although the unraveling resistance is small, However, since the mechanism for projecting and retracting the protrusions must be provided within the rotating drum, the device is complicated.

This invention was made to solve the problems of these conventional methods, and the yarn is guided from the outer periphery of the yarn storage drum to the nozzle by the operation of a yarn path converter provided on the weft waste side of the yarn storage drum. The structure is extremely simple and the operation is very simple by changing the path of the weft yarn and causing the weft yarn to engage and disengage from the locking protrusion provided on the outer edge of the side surface of the yarn storage drum to hold and unwind the weft yarn. The objective is to provide a rotating drum type weft storage device that is reliable and has almost no unraveling resistance.

Explaining with reference to the reference numerals of the illustrated embodiments, the rotating drum type weft storage device of the present invention comprises a weft waste side oblique outer edge of a yarn storage drum 6 that winds and stores the weft yarn a continuously supplied from the yarn supply source l. Weft locking protrusions 11...11 are provided on the weft waste side of the yarn storage drum 6, and yarn path converters 12, 7a, 1
3.15, and by the operation of this thread path converter, that is, the movement of the thread path converters 12.7a, 13 in the axial direction or the throttling action of the blades 17...17 of the yarn path converter 15. , by bending and stretching the first weft C (conducting force from the outer periphery of the yarn storage drum 6 to the nozzle 9), the weft C is locked to the locking protrusions 11, and is wound and stored. This is a characteristic feature.

Hereinafter, further explanation will be given based on the embodiments shown in the drawings.

Figures 1 to 4 show each part 2i of the weft storage device of the present invention.
In the figure, 1 is a weft supply bobbin, 2 is a yarn guide, 3 is a yarn feeding roller, 4 is a length measuring drum, 5 is a yarn guide, 6 is a yarn storage drum, and 7 and 7a are yarn yarn storage drums. 8 is a gripper, 9 is a weft insertion nozzle, a is a weft guided from the yarn supply bobbin 1 to the weft storage device, b is a weft wound around the yarn storage drum 6, and C is a yarn storage This is the weft thread being led from the drum 6 to the nozzle 91\.

The length measuring drum 4 and the yarn storage drum 6 are integrally fixed to the driving shaft lO, and are driven to rotate at a constant speed by a drive device (not shown). The yarn feeding roller 3 is rotated while being pressed against the length measuring drum 4, and the weft yarn a from the yarn feeding bobbin 1 is held between the yarn feeding roller 3 and the length measuring drum 4 and is rotated by the rotation of the length measuring drum 4. be drawn out. The weft yarn pulled out by the length measuring drum 4 and the yarn feeding roller 3 is guided by the yarn guide 5 toward the standing drum 6 side, and is wound and stored on the yarn storage drum 6. When the nozzle 9 is operated at a predetermined weft insertion timing, the tension applied from the nozzle 9 to the weft yarn C causes the weft yarn wound around the yarn storage drum 6 to unravel in the axial direction of the drum 6, and the weft yarn is inserted. The configuration and operation of the zero or more weft storage device are the same as those of a conventional rotating drum type weft storage device.

In the weft storage device of the present invention, a large number of weft locking projections 11 are provided on the outer edge of the weft waste side side surface of the yarn storage drum 6.
・11 are planted at a constant pitch.

Only two of them are shown in the figure. Further, on the weft waste side of the yarn storage drum 6, yarn path converters 12°7a, 13
, 15 are provided.

The yarn path converter 12 shown in FIG. 1 is a guide ring that is reciprocated in the axial direction of the yarn storage drum 6 as shown by the arrow at a predetermined timing, and the weft C from the yarn storage drum 6 is
The yarn guide 7 passes through the inside of this guide link 12.
, are guided to the nozzle 9 via the gripper 8.

When the guide ring 12 is in the position shown by the solid line in the figure close to the yarn storage drum 6, the weft C from the yarn storage drum 6 is
is bent toward the yarn storage drum 6 by this guide ring 12, and the thread path of the weft C passes through the weft area around which the locking protrusions 11 installed on the yarn storage drum 6 revolve. Become. Therefore, in this state, the yarn storage drum 6 rotates.
The end of the weft thread is held by one of the locking protrusions 11...11, and the weft thread pulled out by the length measuring drum 4 is wound around the yarn storage drum 6. Become.

On the other hand, when the guide ring 12 is separated from the yarn storage drum 6 as shown by the imaginary line in the figure, the weft C guided from the yarn storage drum 6 to the yarn guide 7 is
The thread path of the weft C is separated from the locking projections 11...11
The yarn storage drum 6
The weft thread wound around the weft thread is released from the locking protrusion 11 and becomes ready to be unwound.

NIJ, when winding and storing the weft thread, the guide ring 12
The guide ring 12 can be moved to the yarn storage drum 6 side and the weft end can be locked by the locking protrusion 11 to securely wind and store the weft thread on the yarn storage drum 6. By separating the weft end from the locking protrusion 11 and separating it from the locking protrusion 11, the weft can be unraveled without resistance.

In the embodiment shown in FIG. 2, the yarn guide 7a installed between the yarn storage drum 6 and the gripper 8 is moved in the axial direction of the yarn storage drum 6.
The yarn path from the nozzle 9 to the nozzle 9 is changed. That is, by moving the yarn guide 7a to the yarn storage drum 6 side, the weft yarn C is bent once and is locked to the locking protrusion 11, and the weft yarn is wound and stored in this state, and when the weft is inserted, the weft yarn C is wound and stored. The yarn guide 7a is separated from the yarn storage drum 6 so that the yarn end can be released from the locking protrusion 11.
2, but the operating stroke of the guide 7a necessary for locking and releasing the weft is larger than that of the guide 1 nong 12 shown in FIG.

What is shown in FIG. 3 is a guide disc 13 as a thread path converter.
is used. Guide disc 13 & drums 4, 6
It is fixed to the tip of a sliding shaft 14 that passes through the drive shaft 10 of. The yarn guide 7 is installed close to the yarn storage drum 6, and the yarn path from the outer periphery of the yarn storage drum 6 to the yarn guide 7 extends through the area where the locking protrusions 11...11 go around. It is set to pass. Guide disc 13
In the state shown by a solid line in the diagram in which
In the state shown by the imaginary line in the figure in which the guide disk 13 is advanced toward the nozzle 9 side, the weft C is pushed outward by the guide disk 13, and the weft C is released from the locking protrusion 11.

The thread path converter 15 shown in FIG. 4 is an aperture ring whose inner diameter can be widened or narrowed.
7...17, and this blade 17...
17 is opened and closed by a mechanism similar to the aperture of a camera to widen and narrow the inner diameter. The weft C guided from the yarn storage drum 6 to the yarn guide 7 passes through the inside of this drawing ring 15, and by squeezing the blade 17, the weft C is bent and the weft C and the locking protrusion 11 are locked.
The structure is such that the weft C is released from the locking protrusion 11 by opening the blade 17.

As shown in the above figure, the yarn path converters 12.7a and 13°15 are provided on the weft waste side of the yarn storage drum 6, and the yarn path converters 12.7a and 13.15 are used to disentangle the yarn from the yarn storage drum 6. The locking protrusion 11 of the yarn storage drum 6 changes the yarn path of the weft yarn C being carried.
By connecting and disengaging with the yarn storage drum 6, the end of the weft thread is securely held and wound around the yarn storage drum 6 during weft storage, and the weft thread wound around the yarn storage drum 6 is released without resistance during weft insertion. You will be able to do it.

FIG. 5 shows a more detailed structure of the weft storage device of the present invention, and shows an example belonging to the embodiment of FIG. 1.

In FIG. 5, the length measuring drum 4 and the yarn storage drum 6 are integrally formed and fixed to one end of a drive shaft 10, and this drive shaft 10 is pivotally supported by a casing 20 by bearings 18 and 19. There is. 21 and 22 are seal rings. A pulley 23 is fixed to the other end of the drive shaft lO, and is driven by a timing belt 24. The yarn feed roller 3° is mounted in free rotation on the shaft '27 by means of bearings 25,26. The shaft 27 is connected to the casing 2 by an eccentric shaft 29 extending from its J+ξ end 28 to the opposite side.
It is pivotally supported by a bracket 30 fixed to
By urging the shaft 27 around 9, the yarn feeding roller 3 is brought into pressure contact with the length measuring drum 4. 31 is
This is a lever that manually rotates the eccentric shaft 29 to release the pressure contact between the yarn feeding roller 3 and the length measuring drum 4. A cover 32 is provided on the outer periphery of the yarn storage drum 6 to prevent ballooning when the weft waste is collected, and the edge of the cover 32 on the weft waste side is bent inward to prevent the weft waste from forming. A guide ring 12 is formed for converting. Weft locking protrusion 1
Although only two of the threads 1 . . . 11 are shown in the figure, a large number of threads 1 . A bracket 33 is fixed to the cover 32,
This bracket 33 is slidably attached to a guide rod 35 extending from the frame 34 in parallel to the rotation axes of the drums 4 and 6. Although only one guide rod 35 is shown in the figure, two guide rods are actually required. A pin 36 is implanted at the tip of the bracket 33, and this pin 36 is loosely fitted into an elongated hole 39 provided at one end of a lever 38 that swings around a pin 37 implanted in a stationary member. A roller 4 is attached to the other end of the lever 38.
The roller 40 is in contact with a surface cam 42 provided on a camshaft 41 that rotates in synchronization with the crankshaft of the loom. 43 is a tension spring provided to urge the roller 40 toward the surface cam 42.

At the time of weft storage shown in the figure, the cover 32 is attached to the spring 43
The guide ring 12 is located close to the yarn storage drum 6, and the guide ring 12 is biased toward the left side in the figure.
2 bends the weft C guided from the yarn storage drum 6 to the nozzle and locks it in the locking protrusion 11. When the crankshaft of the loom rotates and the weft insertion timing is reached, the protrusion 42a of the cam 42 rotating in synchronization with the crankshaft moves the roller 40, and the lever 38 swings to move the bracket 33 to the guide rod 35. Move it to the right along.

Then, the cover 32 and the guide ring 12 move to the position indicated by the imaginary line in the figure, and the weft yarn C is separated from the guide ring 12 and released from the locking protrusion 11, and is unraveled from the yarn storage drum 6 by the tension applied from the nozzle. The material is then inserted into the weft. And at the timing when weft insertion is finished,
The roller 40 returns and the cover 32 and guide ring 1
2 moves to the left again, and 0 or more operations of bending the weft C and locking it to the locking protrusion 11 are repeated for each pick,
Measurement, storage, and insertion of the weft threads for each pick are performed.

According to the weft yarn storage device of the present invention as described above, when storing the weft yarn, it is possible to reliably lock the end of the weft yarn wound around the yarn storage drum to the yarn storage drum and wind the weft yarn. In addition, the structure can be such that no unwinding resistance is applied to the weft unraveled from the yarn storage drum during weft insertion, and the mechanism for locking and unwinding the weft yarn on the barge is extremely simple. It becomes possible to configure.

[Brief explanation of drawings]

FIG. 1 shows the first embodiment of the present invention, and FIG. 2 shows the second embodiment 7J.
tli aspect, FIG. 3 shows the third embodiment, and FIG. 4 shows the fourth embodiment.
FIG. 3 is a side view showing each embodiment. FIG. 5 is a sectional view showing the detailed structure of an example belonging to the first embodiment. In the figure, 1 is a weft supply bobbin, 4 is a length measuring drum, 6 is a yarn storage drum, 7 and 7a are yarn guides, 9 is a weft insertion nozzle,
11 is a weft locking projection, 12 is a guide link, 13 is a guide disk, 14 is a sliding shaft, 15 is an aperture ring, 17 is a blade, 32 is a cover, 33 is a bracket, 35 is a guide rod, 38 is a lever, 39 is a long hole, 4o is a roller, 4
1 is a cam shaft, 42 is a surface cam, 43 is a tension spring, a, b
. C is the weft. Agent Patent Attorney Takao Nishi

Claims (1)

[Claims] (1) A weft locking protrusion is provided on the outer R part of the side surface on the m yarn waste side of the yarn storage drum that winds and stores the weft that is continuously supplied from the yarn feeder, and the weft is released from the yarn storage drum. A yarn path converter is disposed in the path of the yarn path converter, and the operation of the yarn path converter bends and stretches the weft yarn guided from the outer periphery of the yarn storage drum to the nozzle, thereby locking the weft yarn to the locking protrusion and winding it. Rotating drum of shuttleless loom, characterized by storage 5! S weft storage device.