JPS6163748A - Weft yarn storage apparatus of fluid jet type loom - 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 (Field of Industrial Application) The present invention relates to a weft storage device between a weft feeder and a weft insertion nozzle in a fluid jet loom.

(Prior Art) As a conventional weft storage device, there is one shown in Japanese Patent Publication No. 55-49177.

This is because when storing the weft yarn in a coiled manner between the weft yarn feeder and the weft insertion means, a plurality of rollers are arranged in a skein frame shape, and the center axis of some or all of the rollers is the skein frame axis. Coils that are not included in any plane including the center and are parallel to one of the planes (coils that are continuously formed on the winding ends of the arranged roller frame due to the rotation of the roller) , and the roller arrangement to advance toward the unraveling end in the order of formation and independently, while holding the weft portion stretched from the coil closest to the unwinding end to the weft insertion means in the advancing direction. It is characterized by being stored in a balloon shape and then being pulled out in a balloon shape while applying rotational resistance.

According to this, the coil of wound weft yarn moves forward toward the unwound end at a constant speed due to the twisting and rotation of the rollers that make up the roller frame, so that the weft yarns that are to be wound one after another are already wound. Since the weft threads hardly come into contact with each other, let alone riding on the existing weft coils, it is possible to prevent the weft threads from getting tangled or damaged, and from increasing the unwinding resistance due to running over them, and it is possible to store the weft threads in an orderly manner.

<Problems to be solved by the invention> However, in such a conventional weft storage device,
The unwinding end of the roller frame applies rotational resistance to hold and store the weft yarn, and when inserting the weft, it is pulled out in a balloon shape while applying rotational resistance, so that the weft yarn has no extra inertia at the end of weft insertion. The problem is that fluid injection looms, especially those with weak weft insertion force such as air injection looms, suffer from insufficient weft insertion due to the large amount of rotational resistance. There was a point.

Therefore, it is desirable to adopt a locking device that can reduce the weft insertion resistance during weft insertion and securely lock the weft yarn at the unrolled end of the roller frame when weft insertion is completed. If it is constant, unless the weft width (weft insertion length) is specified, the circumferential position of the weft yarn at the unrolled end of the roller frame at the end of each weft insertion will not be constant, making it difficult to employ a locking device.
Even if adopted, it would not be possible to respond to changes in the texture.

Therefore, the present invention further improves this type of weft storage device that can store the weft in an orderly manner in a coiled manner, reduces weft insertion resistance during weft insertion, and securely locks the weft at the end of weft insertion. The purpose is to be able to respond to changes in 1rll.

Means for Solving the Problems> In order to achieve the above object, the present invention has a plurality of rollers arranged in a frame shape, and a part or all of the central axes of the rollers are arranged in any plane including the axis of the frame. Arranged so that it does not include
A roller frame around which the weft from the yarn feeder is wound, a rotation drive mechanism that rotates at least one of the inclined rollers around its central axis, and one location near the end of the weft insertion nozzle of the roller frame. a locking body that always locks the weft stretched between the weft insertion nozzle at the weft insertion nozzle, and a locking body that is removed during weft insertion to release the lock on the weft, and at least one of the rollers that is not rotationally driven. Provided is a weft storage device for a fluid jet loom, which is equipped with a position adjustment mechanism that allows the position of the weft yarn to be adjusted in a direction substantially perpendicular to the skein frame axis.

In the above-mentioned weft storage device, the weft wound around the roller frame is continuously sent to the weft insertion nozzle side due to the twisting and rotation of the rollers constituting the roller frame. There is no gap between the wefts and weft insertion errors due to overlapping of the wefts.Also, the locking body can normally lock the weft yarn and store the weft reliably, and when inserting the weft, the locking body is removed and the weft is inserted. Since there is no weft insertion resistance during weft insertion, there is no weft insertion failure due to this resistance, and the weft is retained by the locking body even if it is pulled out excessively due to a sudden stop at the end of weft insertion. Because it is destroyed, it all disappears. Moreover, since the circumference of the roller frame changes by adjusting the position of the roller that is not rotationally driven, the integral number of windings around the roller frame can be adjusted to correspond to the weft insertion length of one time in response to changes in the weaving width. Even if the position of the locking body is constant, it can respond to changes in the fabric width.

<Example> An embodiment of the present invention will be described below.

1 to 3 show a weft storage device according to the present invention, FIG. 4 shows its control circuit portion, and FIG. 5 shows the overall configuration of Ita.

First, the overall configuration of the loom will be explained.

In Fig. 5, lΔ, IB are the frame of the loom, 2 is the back roller, 3 is the warp, 4 is the heddle, 5 is the reed, 6 is the loom,
7 is a woven fabric, and 8 is a pressed beam.

Further, 9 is a yarn feeding stand, 10 is a yarn feeding body, 11 is a weft,
12 is a bracket fixed to the frame IA, 13 is a weft storage device attached to the bracket 12, 14 is a weft guide provided on the frame IA, and 15 is a weft insertion nozzle that swings together with the reed 5. Here, the weft yarn 11 pulled out from the yarn supplier 10 is stored in the weft storage device 13, and after being inserted into the warp opening by air jet from the weft insertion nozzle 15, it is beaten by the reed 5 to form the woven fabric 7. woven.

Next, the weft storage device 13 according to the present invention will be explained with reference to FIGS. 1 to 3.

A rotary shaft 22 is rotatably supported by a bearing 21 on a support body 20 fixed to the bracket 12 . and,
A variable speed electric motor 23 is fixed to the end surface ratio of the support body 20 on the yarn supplying body 10 side (left side in the figure), so that the rotary shaft 22 can be rotationally driven.

This motor 23 does not need to be a variable speed type as long as it can pull out more weft yarns 11 than the consumption amount of the weft yarns 11, but if it is a variable speed type, it is set to the optimum rotation speed according to the consumption amount of the weft yarns 11. There are many advantages to being able to do so.

A thread guide hole 24 through which the weft 11 from the thread feeder 10 is drawn is formed in the axis of the rotating shaft 22 on the side of the thread feeder 10, and the thread guide hole 24 is connected to the thread guide hole 24 in the middle part. A winding vibrator 25 that projects obliquely is fixed with screws 26.

A winding guide 27 is fixed to the tip of the winding vibrator 25. A balance rod 28 is fixed to the rotating shaft 22 in symmetry with the wrapped vibrator 25, and is fixed with a nut 29.

A flanged cylindrical stationary support 31 is supported on the weft insertion nozzle 15 side (left side in the figure) of the rotating shaft 22 via a bearing 30 so as to be relatively rotatable. The stationary support 31 has a permanent magnet 32 fixed thereto facing a permanent magnet 33 fixed to the support 20 with a predetermined gap therebetween, and the rotating shaft 22 rotates due to the attractive action of these magnets 32 and 33. Try to stay still even when you are moving. The winding vibrator 25 is designed to pass through the gap between the magnets 32 and 33 when rotating.

The static support 31 includes driving rollers 35A, 35B, 35C and driven rollers 49A, 49B that constitute the roller frame 34.
.

49G are arranged in a frame shape.

The drive rollers 35A to 35C have their shafts 36A to 36
G is rotatably supported by each of the support frames 37A to 37G via bearings 38. These support frames 37A~
37C is fixed to the bracket 40 with bolts 39,
This bracket 40 is connected to the stationary support 31 by bolts 41.
Fixed.

A pulley 4 is provided at each end of the shafts 36A to 36C.
2A to 42C are fixed by screws 43, and a round belt 45 is wound between these pulleys 42A to 42G and a pulley 44 formed at the end of the rotating shaft 22. 46A.

46B is a guide roller, which is attached to brackets 48A and 48B fixed to bracket 40 with bolts 47. As a result, the rotation of the rotation shaft 22 causes the drive rollers 35A to 35C to rotate in the same direction around the shafts 36A to 36C. Therefore, the rotating shaft 22, the belt 45, the pulleys 42A to 42C, and the like constitute a rotational drive mechanism.

Here, these drive rollers 35A to 35G are mounted by tilting the support frames 37A to 37C in the same direction with respect to the bracket 40, so that their shafts 36A to 36G are
It is arranged so that it is not included in any plane including the axis of the rotating shaft 22 and is parallel to one of the planes.

The driven rollers 49A to 49C are connected to respective support shafts 50A.
It is rotatably attached via a bearing 51 with respect to ~50G. The ends of these support shafts 50A to 50C are inserted into adjustment holes 52A to 52C formed in the stationary support body 31 radially with respect to the axis of the rotating shaft 22, and the ends are inserted into adjustment holes 52A to 52C formed in the stationary support body 31 in a radial manner with respect to the axis of the rotating shaft 22.
It is tightened and fixed. Therefore, the adjustment hole 52A
~52C, the lock nut 53, etc. constitute a position adjustment mechanism.

These support shafts 50A to 50C are bent near their ends, and their central axes are not included in any plane including the axis of the rotating shaft 22, and the driven rollers 49A to 49G are drive roller 3 so that it is parallel to one of the
It is tilted in the same direction and at almost the same angle as 5A to 35C.

Therefore, driving rollers 35A to 35C and driven roller 49A
-49C are shaped like a tC frame, and are tilted so that their central axes are not included in any plane including the axis of the rotating shaft 22 as the skein frame axis, and are parallel to one of the planes. They are arranged to form a roller frame 34.

54 is the end of the drive Φ10-ra 35A to 35C (pulley 4
2A to 42C) from the outer periphery side, and a portion of the stay is fixed to the bracket 40 with bolts 56.

Reference numeral 57 denotes a rod-shaped locking body, which is supported by a bracket 58 fixed to the support body 20 and is disposed so as to face the outer peripheral surface of the cover 54 from the outside. This locking body 57 normally passes through the through hole 61 of the cover 60 fixed to the bracket 58 with bolts 59, and further projects into the through hole 55 of the cover 540, and is inserted into the roller frame between the cover 54 and the cover 60. 3
The weft 1 is stretched from the unwinding end of the weft 4 to the weft insertion nozzle 15.
1 is locked.

62 is a cam that rotates in synchronization with the main shaft of the loom, and a cam follower 65 at the end of a lever 64 pivotally connected to a fixed shaft 63.
are in contact with each other. During weft insertion, the high part of the cam 62 comes into contact with the cam follower 65, and the lever 64 rotates counterclockwise in the figure, pulling up the locking body 57 connected to the lever 64 by a wire 66, and pulling up the cover 54. 60 through holes 55.
61 to leave the room.

Reference numeral 67 denotes a photoelectric weft detector, which is equipped with a light projector 68 and a light receiver 69 as shown in FIG. Weft yarn 1 on the roller frame 34
Detecting the increase in the amount of reflected light due to the consumption of
The operation of the motor 23 is controlled.

For details, refer to Fig. 1 (1).The signal from the light receiver 69 is compared with the reference signal from the base Y final value setting circuit 71 in the comparison circuit 70, and if the signal from the light receiver 69 is larger. ,
That is, when the weft yarn 11 on the roller frame 34 is consumed and the resulting diffuse reflection disappears, and a large amount of light from the projector 68 is reflected from the circumferential surface of the drive roller 35B and enters the light receiver 69, The output of the comparison circuit 70 becomes H level, turning the switching circuit 72 m1lli (ON).
It's like letting them do it. These four connections connect the motor 23 to the DC power supply 73 and the current control circuit 74 for speed change, thereby causing the motor 23 and the rotating shaft 22 to rotate. Been,
The winding pipe 25 is configured to rotate around the roller frame 34.

Next, the effect will be explained.

Due to the rotation of the motor 23, the wrapped pipe 2 is rotated along with the rotating shaft 22.
5 is rotated in the direction of arrow A in FIG. 2, and the weft yarn 11 is wound around a roller frame 34 in the form of a skein frame consisting of driving rollers 35A to 35C and driven rollers 49A to 49C. Of course, the entire roller frame 34 is held stationary.

Also, due to the rotation of the rotating shaft 22, the belt 45 and the pulley 4
Drive rollers 35A to 35B rotate in the direction of arrow B in FIG. 2 via rollers 2A to 42C, respectively. This rotation causes
The weft yarn 11 wound around the roller frame 34 is sequentially sent to the unwound end side of the roller frame 34 by the inclination of each roller 35A to 35C and 49A to 49G, so that the weft yarn 11 is wound as shown in FIG. The weft yarns 11 are spaced apart. This interval is determined by the inclination and rotational speed of the rollers 35A to 35C and 49A to 49C.

Therefore, when changing this interval, the support frame 37A
The inclination of ~37C with respect to the bracket 40 may be changed, or the boos IJ42A~42G may be changed to ones with different diameters.

When the wound weft 11 reaches the weft detector 67, the light from the projector 68 is diffusely reflected by the weft 11 and the amount of light entering the light receiver 69 is reduced.
The L-level signal from the comparison circuit 70 causes the switching circuit 72 to turn off (OFF), and the motor 23 stops!
Hi. This stops the winding.

On the other hand, the locking body 57 is connected to the cover 54 via the lever 64 and the wire 66 by the cam 62 which rotates in relation to the main axis of the weave. [i(enters and exits through hole 55.61 of l).

That is, to explain with reference to FIG. 6, air injection from the weft insertion nozzle 15 is started prior to weft insertion. Immediately thereafter, the locking body 57 exits from the through hole 55.61. As a result, the weft yarn 11 is unwound and pulled out from the unwound end side of the roller frame 34 by the traction force of the weft insertion nozzle 15 while causing ballooning, and is inserted into the opening of the warp yarn 1. Note that a ballooning cover may be provided between the roller frame 34 and the weft guide 14 to control the size of ballooning. During this weft insertion, the weft 11 is pulled out while rotating around the roller frame 34, so the weft 11 is pulled out while rotating around the roller frame 34.
The timing of reaching the locking body 57 part of No. 1 is shown in Fig. 6.
r, Tz.

It is shown at T3.

The locking body 57 immediately enters the through hole 55.61 after the third passage (T,) of the weft thread 11. For this reason, the 4th part of the weft 11
At the time of reaching the weft thread 11 for the third time, the weft yarn 11 is locked by the locking body 57, and weft insertion is completed. Before this, air injection from the weft insertion nozzle 15 has been stopped.

When weft insertion is performed in this way, there is no weft 11 in the weft detector 67, so the amount of light incident on the light receiver 69 is large.Therefore, the comparison circuit 70 determines that the weft exceeds the reference level. This causes the switching circuit 72 to become conductive.This causes the monitor 23 to rotate and move the weft yarn 11 to the roller frame 34.
Wrap it around to maintain the specified amount. It is preferable that this winding speed is faster than the consumption speed of the weft yarn 11. Therefore, the motor 23
A current control circuit 74 is provided for speed change so that the rotation speed of the motor can be changed.

Next, when changing the weave width of the woven fabric 7, and therefore the weft insertion length, the support shafts 50A to 50C of the driven rollers 49Δ to 49C (
Alternatively, the napft 53 of at least one of these is loosened, moved within the adjustment holes 52A to 52C, and then fixed again at a predetermined position. As a result, the roller frame 34
Since the circumference of the weft changes, the weft insertion length can be changed. That is, since the weft insertion length is regulated by the locking body 57, the circumference is always adjusted so that the number of unwindings is an integral number.

In the above embodiment, the shafts 36A to 36C are arranged so as to be parallel to one of the planes including the axis of the rotating shaft, but the shafts 36A to 36C are arranged so as to be tilted forward toward the weft insertion nozzle 15. is also possible. In addition, while detecting the winding amount of the weft yarn 11 on the roller frame 34, the winding amount of the weft yarn 11 on the roller frame 34 is checked so that the winding amount of the weft yarn 11 on the roller frame 34 is always more than a certain amount.
However, the winding pipe 25 is linked to the main shaft of the loom and rotated an integral number of times per one revolution of the main shaft.
The weft 11 may be wound for one pick per rotation.

Furthermore, in the above embodiment, the weft 11 is wound around the roller frame 34 by keeping the roller frame 34 stationary and rotating the winding pipe 25 around it, but the winding pipe 25 is fixed in position. The winding may be performed by rotating the roller frame 34. In that case,
The locking body 57 may be held within the roller frame 34 and protruded and retracted.

<Effects of the Invention> As explained above, according to the present invention, not only can the weft yarns be wound and stored in an orderly manner at intervals around the roller frame without overlapping, etc., but also it is possible to unwind the roller frame. Since the locking body that locks the weft at the end is removed during weft insertion, weft insertion resistance can be greatly reduced, especially for air injection looms with low weft insertion force. Moreover, it is possible to respond to changes in the weaving width by changing the circumferential length of the roller frame very easily.

[Brief explanation of drawings]

1 to 5 show one embodiment of the present invention, in which FIG. 1 is a front longitudinal sectional view of the weft storage device, FIG. 2 is a side view of the same, FIG. 3 is a plan view of the same, and FIG. The figure is a schematic diagram of the control circuit part.
FIG. 5 is a plan view of the entire loom. Moreover, FIG. 6 is a timing chart of the operation of the main devices in the same embodiment. DESCRIPTION OF SYMBOLS 10... Yarn feeder 11... Weft 13... Weft storage device 15... Weft insertion nozzle 22... Rotating shaft 23... Motor 25... Winding pipe 31
... Stationary support body 34 ... Roller frame 35A ~
35C... Drive roller 42A-42G... Pulley 45... Belt 49A-49G... Followed roller 50A-50C... Support shaft 52A-5
2C...Adjustment hole 53...Rofukunasoto 57
...Locking body 62...Cam 67...Weft thread detector Patent applicant Nissan Motor Co., Ltd. agent Patent attorney Fujio Sasashima Figure 2

Claims (1)

[Claims] The weft yarn (
11) is wound into a coil shape and stored, and during weft insertion, the coiled weft (1
In the weft storage device (13) of a fluid jet loom that pulls out and inserts the weft, a plurality of rollers (35A to 35
C, 49A to 49C) are arranged in a skein frame shape so that some or all of their center axes are not included in any plane including the skein frame axis, and the weft (11) is wound around it. A roller frame (34), a rotation drive mechanism (22, 45, 42A to 42C) that rotates at least one of the inclined rollers (35A to 35C) around its central axis, and Weft (11) stretched between the weft insertion nozzle (15) at one location near the end on the insertion nozzle side
and a locking body (57) that locks the weft thread (11) at all times and moves out during weft insertion to release the lock on the weft thread (11).
At least one of the rollers that is not rotationally driven (49A
A weft storage device for a fluid jet loom, comprising a position adjustment mechanism (52A to 52C, 53) that can freely adjust the position of (52A to 49C) in a direction substantially perpendicular to the skein frame axis.