JP3508996B2 - Weft storage device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weft yarn storage device for a fluid jet loom, and more particularly to a weft yarn storage device for a fluid jet loom equipped with a weft yarn regulating body for regulating the movement of the weft yarn around a storage drum. Regarding

In this specification, "front" refers to the direction in which wefts are pulled out from the storage drum, and "rear" refers to the opposite direction.

[0003]

2. Description of the Related Art Conventionally, a storage drum which is a weft storage portion,
In a weft storage device of a fluid jet type loom having a weft locking device having a locking pin for engaging and disengaging the storage drum, a member for regulating ballooning of the weft drawn from the storage drum is provided around the storage drum. The one prepared for is proposed.

As one of the conventional techniques of such a warp yarn storage device, there is a device disclosed in Japanese Utility Model Laid-Open No. 4-135988. In this conventional technique, a ballooning regulation cover as a regulation member is arranged in front of the storage drum at a distance.

As another conventional technique, Japanese Patent Laid-Open No. 7-9
There is a device disclosed in Japanese Patent Publication No. 0752. In this prior art, the ballooning suppressing body as the weft regulating member is arranged so as to extend forward while surrounding the yarn winding surface of the storage drum, and the locking pin of the weft locking device is provided to suppress the ballooning. It is designed to advance toward the storage drum from a through hole formed in the body.

[0006]

In the former case of the above-mentioned prior art, since the ballooning guide is arranged apart from the storage drum, the ballooning of the weft yarn between the storage drum and the ballooning guide is restricted. I can't. Therefore, the weft yarn is greatly ballooned between the unwinding position of the weft yarn on the storage drum and the ballooning guide, and the following problems occur.

First, since the weft yarn that has largely ballooned on the downstream side of the storage drum is suddenly regulated by the ballooning guide, the weft yarn is damaged by sliding contact with the edge of the ballooning guide. In addition, when the weft is locked by the locking pin, the weft is violent, which causes damage such as fluffing of the weft, resulting in deterioration of the quality of the woven fabric.
Further, depending on the configuration and arrangement of the weft thread locking device, the weft thread may be caught by the locking pin or the like during unwinding, resulting in damage to the weft thread or weft insertion error. Moreover, since these problems become more remarkable as the loom speed increases,
It becomes a factor that hinders the speeding up of the loom.

In the latter case of the above-mentioned prior art, there is a problem in performing maintenance of the weft yarn storage device. That is, in the weft yarn storage device, it is necessary to perform maintenance such as cleaning of the inner peripheral surface of the ballooning guide, residual yarn processing on the storage drum, and diameter adjustment if the diameter of the storage drum is changeable. In the case of the technique, since the ballooning guide extends forward while surrounding the storage drum, it is difficult to perform maintenance as it is, and the ballooning guide needs to be removed. However, in this case, the following problems occur.

First, in order to remove the ballooning guide, it is necessary to move the weft locking device so that the locking pin of the weft locking device is disengaged from the through hole of the ballooning guide. As a result, the positional adjustment relationship between the storage drum and the locking pin is once destroyed, and readjustment must be performed, which complicates the work. If this readjustment is not performed correctly, the locking pin will protrude into the ballooning guide even if it retracts, and the weft will be caught by this locking pin during unwinding, resulting in damage to the weft and weft insertion errors. May be caused.

It is possible to set the position of the locking pin at the time of retreating so as to be outside the ballooning guide so that the ballooning guide can be removed regardless of the position of the weft thread locking device. However, in this case, there are problems that the stroke of the locking pin becomes long, the operation becomes unstable, and the speedup of the loom is hindered.

It is also conceivable to form a through hole, through which the locking pin of the ballooning guide is inserted, into a U-shape that opens at the end portion on the storage drum side. However, when the ballooning guide is configured to surround the storage drum, the weft slides on the edge of the ballooning guide at the start of winding the weft around the storage drum.
The weft may get caught in the opening of the through hole and may cause winding failure.

The present invention has been made in view of the above-mentioned problems of the prior art, and does not damage the weft and the like.
A weft storage device that can stably control winding around the storage drum and regulate ballooning, and can easily perform maintenance of the weft storage device without changing the position of the weft locking device with respect to the storage drum. The purpose is to provide.

[0013]

The present invention relates to a storage drum having a yarn winding surface which is a weft storage portion, and the storage drum.
A rotary yarn guide that winds the weft around the yarn winding surface, a locking pin that engages and disengages the weft with respect to the storage drum, and
A weft locking device, which is arranged on the outer circumference of the storage drum and is spaced apart from the storage drum, and which drives the locking pin and is fixed in position with respect to the storage drum; A weft storage device including a weft regulating body that extends forward in the weft inserting direction while surrounding the surface, wherein the weft regulating body comprises:
The end of the storage drum that is fixed to the storage drum is formed continuously over the entire circumference in front of the rotary yarn guide , and the end of the rotary yarn guide is formed.
A first guide member formed to have a diameter smaller than the rotation locus of the tip portion, and extending forward of the first guide member in the weft insertion direction, and at least a part of which interferes with the weft locking device. without a weft storage device comprising a second guide member which is separably configured from the first guide member.

An end edge of the second guide member corresponding to the weft thread locking device may be located in front of a portion of the corresponding weft thread locking device. Further, the end portion of the second guide member on the storage drum side may be located on the storage drum side or the position of the locking pin.

Preferably, the first guide member and the second guide member are formed to have the same diameter as each other, and when the second guide member is in a guide position where it is connected to the first guide member, the first guide member is provided. The inner surfaces of the member and the second guide member extend continuously.

In the weft storage device of the present invention, even if the ballooning guide surrounds the storage drum, the second guide member forming the front portion of the ballooning guide is the first guide regardless of the position of the weft locking device. The second guide member is detachable from the member, and the second guide member is separated from the first guide member without moving the weft locking device, so that various maintenance can be easily performed.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the present invention. In a weft storage device 10, a rotary shaft 12 thereof is inserted into a fixed cover 14 fixed to a machine base (not shown), and a drive motor 16 is provided. Is driven to rotate. The rotating shaft 12 has a rotating yarn guide 18
Is provided so as to project obliquely toward the tip side of the rotary shaft 12, and a weft guide passage 18a through which the weft Y is inserted is formed inside the rotary yarn guide 18. Weft guide passage 18a
Is formed along the rotary shaft 12 and guides the weft Y from a yarn feeder (not shown).

A drum holder 22 is attached to the rotary shaft 12 via a pair of bare rigs 20.
The drum holder 22 has a plurality of permanent magnets 22a at its outer peripheral position and faces the plurality of permanent magnets 14a on the fixed cover 14 side, thereby fixing the rotary shaft 12 with rotation. The relative rotation with respect to the cover 14 is blocked.

A storage drum 24 is fixed to the front surface of the drum holder 22. In the illustrated example, the storage drum 24 is divided into two, and the drum pieces 24b and 24c are each divided.
It consists of The drum piece 24c is attached so as to be movable in the radial direction.
By adjusting the position of, the winding diameter of the storage drum 24 can be changed. The drum piece 24b is assumed to be mounted in a fixed position so as not to disturb the positional relationship with the weft locking device 26 described later. Also, the storage drum 2
The center portion of each of the drum pieces 24b and 24c of No. 4 is formed in a hollow shape, thereby forming the yarn winding surface 24a. Further, an insertion hole 32 for inserting the locking pin is formed in the bulging portion formed in the front portion of the drum piece 24b.

Above the drum piece 24b of the storage drum 24, a weft locking device 26 supported by the fixed cover 14 by a bracket 47 is provided. Weft locking device 26
The inside thereof has an electromagnetic solenoid 28 and a weft thread locking pin 30 driven forward and backward by the excitation and demagnetization of the electromagnetic solenoid 28.
The weft locking pin 30 is provided so as to face the insertion hole 30 of the storage drum 24 described above.

Around the storage drum 24, the storage drum 2 is provided.
4, a bracket 36 that is supported by the fixed cover 14 and forms a ring-shaped frame member is provided at a predetermined distance from
A ballooning guide 34 as a weft regulating body surrounding the storage drum 24 is attached to the bracket 36. The ballooning guide 34 includes a first guide member 38 fixed to the bracket 36, and a second guide member 40 having the same diameter as the first guide member 38 and continuing to the front of the storage drum 24.

The first guide member 38 surrounds the storage drum 24 from the vicinity of the intermediate portion of the yarn winding surface 24a of the storage drum 24 to the center of the weft locking device 26, that is, the position aligned with the weft locking pin 30. It is installed in. Further, a semicircular cutout portion 38b for receiving the weft thread locking device 26 is formed at one end edge portion 38a of the first guide member 38. Further, the other end edge portion 38c of the first guide member 38 is formed continuously over the entire circumference without discontinuous portions such as notches.

The second guide member 40 has one end edge portion 40.
In a, it is configured to be able to come into contact with and separate from the end edge portion 38a of the first guide member 38. Then, the end edge portion 40a is in contact with the first guide member 38 at the end edge portion 3a.
The same notch 4 is provided at a position facing the notch 38b of 8a.
0b is formed, and the cutout portions 38b and 40b form a through hole 41 for receiving the weft locking device 26.

A metal band 42 for holding is wound around the second guide member 40, and a holder 44 is attached to a part of the metal band 42. Holder 4
The rear end of 4 extends toward the bracket 36 and is supported by a part of the bracket 36. Therefore, the second guide member 42 is also supported by the bracket 36 via the holder 44 and the metal band 42, similarly to the first guide member 38. Further, the holder 44 is supported rotatably in the horizontal direction by a hinge portion 45 formed on the bracket 36. Therefore, the second guide member 40 is also rotatable, and comes into contact with the first guide member 38 to be in a connected state (a solid line in FIG. 1) and a retracted position apart from the first guide member 38. Position (dashed line in Figure 1)
It is configured to rotate between and.

A hook 46 is attached to the metal strip 42 at a position opposite to the holder 44. A locking member 48 that detachably locks the hook 46 is provided at a position corresponding to the hook 46 of the bracket 36. The locking member 48 locks the hook 46 to prevent the second guide member 40 from rotating.

In the vicinity of the other end edge portion 40c of the second guide member 40, a weft yarn guide (not shown), through which the weft yarn Y drawn from the storage drum 24 is inserted, is provided.

Next, the operation of the weft yarn storage device 10 of this embodiment will be described. First, during weaving, the ballooning guide 34 is fixed to the guide position where the second guide member 40 is connected to the first guide member 38. At this time,
The hook 46 is locked to the locking member 48, and the second guide member 40 is fixed at that position. In addition, the weft locking device 26 includes the cutout portion 38 b of the first guide member 38 of the ballooning guide 34 and the cutout portion 4 of the second guide member 40.
It is in a state of being housed in the through hole 41 formed with 0b.

Then, with the weft-locking pin 30 entering the insertion hole 32, the rotary yarn guide 18 is rotationally driven by the drive motor 16, and the weft Y fed from this yarn guide is placed on the yarn winding surface 24a. It is wound and stored. After that, at a predetermined timing of the loom, the weft-locking pin 30 is retracted, and the weft yarn Y wound around the storage drum 24 is pulled out at a high speed by jetting a fluid from a weft-inserting nozzle (not shown), and the weft yarn is inserted. It At the subsequent predetermined timing, when the weft locking pin 30 advances again and enters the insertion opening 32, the weft Y is locked on the storage drum 24, and the weft Y wound around the storage drum 24 has a predetermined length. When the is pulled out, the pulling out is stopped.

At this time, ballooning occurs in the weft Y due to the centrifugal force between the storage drum 24 and the weft insertion nozzle (not shown), but the ballooning is restricted by the inner wall surface of the ballooning guide 34. It will not grow larger than necessary and will not interfere with weft insertion.

When carrying out maintenance of the weft yarn storage device 10, the hook 46 of the second guide member 40 of the ballooning guide 34 and the locking member 48 of the bracket 36 are fixed.
And the holder 44 holding the second guide member 40 is rotated about the hinge portion 45,
0 is rotated from the guide position to the retracted position. Then, the storage drum 24 is exposed from the end edge portion 38a of the first guide member 38, and the residual yarn processing on the storage drum 24 and the storage drum 24 are performed.
Maintenance such as diameter adjustment is easily performed.

Since the notch 40b, which is an end edge of the second guide member 40 corresponding to the weft thread locking device 26, is located in front of the corresponding part of the weft thread locking device 26, the above-mentioned rotation is not necessary. Even when the second guide member 40 moves, the second guide member 40 does not interfere with the weft thread locking device 26, and the weft thread locking device 2
It can be rotated regardless of the position of 6.

According to the weft yarn storage device 10 of this embodiment, the first guide member 38 constituting the ballooning guide 34 covers the yarn winding surface 24a of the storage drum 24,
Since the ballooning of the weft yarn Y immediately after unwinding from the storage drum 24 can be restricted, it is possible to prevent the weft yarn Y from being rubbed against the edge of the ballooning guide 34 and damaged. Even when the ballooning guide 34 covers the yarn winding surface 24a in this manner, the weft Y is stably wound around the storage drum 24, and the positions of the weft locking device 26 and the storage drum 24 are stable. The second guide member 40 of the ballooning guide 34 can be separated and opened without breaking the relationship, and the maintenance of the weft yarn storage device 10 can be easily performed.

Furthermore, the weft storage device 10 of this embodiment
According to the first guide member 3 of the ballooning guide 34,
Since the boundary between the second guide member 40 and the second guide member 40 is provided near the weft locking device 26, which is closer to the storage drum 24,
It is possible to suppress damage to the weft Y that is caused by the sliding contact with the boundary portion as much as possible.

In the above-described embodiment, in the weft yarn storage device 10, as shown in FIGS. 4 (a) and 4 (b), the body portion of the weft yarn engaging device 26 is inserted into the through hole 41 of the ballooning guide 34. However, instead of this, as shown in FIGS. 5A and 5B, only the weft locking pin 30 of the weft locking device 26 is provided with the through hole 4 of the ballooning guide 34.
It may be configured to be inserted through 1. In this case,
It is sufficient that the size of the through hole 41 corresponds to the weft thread locking pin 30.

Further, in the above embodiment, the second guide member 40 of the ballooning guide 34 is separated from the first guide member 38 by the rotation, but instead of this, the second guide member 40 is the first. The configuration may be such that it can be completely separated from the guide member 38 and moved to another place. Furthermore, the entire second guide member 40 does not necessarily have to be separated from the first guide member 38, and at least a part of the second guide member 40, such as the upper half, is separated from the first guide member 38 by rotation or separation. It may be one.

Further, in the above embodiment, the first guide member 38 and the second guide member 40 of the ballooning guide 34, which is the weft regulating body, are formed in the same length and are connected to each other. The weft regulating body is not limited to this, and the diameter of the first guide member 38 is formed larger than the diameter of the second guide member 40, and the second guide member 40 enters the inside of the first guide member 38. It may be.

As one of such structures, for example, the structures shown in FIGS. 6 (a) and 6 (b) can be considered. In the illustrated example, the second guide member 40 is
The end edge portion 40a has a larger diameter than the weft engaging device 26, and the yarn storage drum 24
Located on the side, and the cutout portion 40b of the second guide member 40.
Is formed by reaching a predetermined distance forward from the edge 40a. And according to this structure, the weft Y
However, the weft Y is less likely to be damaged without sliding contact with the boundary between the first guide member 38 and the second guide member 40.

Further, in this structure, the first guide member 38 may be extended in front of the weft-locking device 26 and the through hole 48 may be formed in place of the cutout portion 38b (see FIG. 7 (a)). ), (B)), and the second guide member 40 may be located in front of the storage drum 24 (FIGS. 8A and 8B).

Contrary to each of the above examples, FIG.
As shown in (b), the diameter of the second guide member 40 may be formed larger than the diameter of the first guide member 38, and the first guide member 38 may enter the inside of the second guide member 40.

That is, in the weft regulating body in the weft storage device of the present invention, the first guide member is fixed in position so as to surround the storage drum, and the second guide member is positioned farther than the rear edge of the first guide member. Any size and positional relationship may be adopted as long as it is positioned in the front and is movable regardless of the position of the weft locking device.

In the case of the examples shown in FIGS. 6 and 7,
The first guide member 38 does not have the function of restricting the ballooning of the weft Y at the time of unwinding. However, in the weft restriction body of the present invention, both the first and second guide members do not necessarily have the weft Y. The first guide member 38 does not have to function to regulate the ballooning of the storage drum 24.
It may be only for guiding the winding of the weft yarn Y around. However, in the examples shown in FIGS. 6 and 7, the diameter of the first guide member 38 is set to be close to that of the second guide member 40, and both guide members have a function of restricting ballooning of the weft Y. It goes without saying that it is okay.

In each of the above-described embodiments, the first guide member and the second guide member are arranged so as to be continuous or overlap with each other in the longitudinal direction of the weft regulating body. Both guide members may be arranged with a gap provided that they do not hinder the regulation of ballooning.

[0043]

In the weft storage device of the present invention, the weft regulating body covers the yarn winding surface of the storage drum, so that the quality of the woven fabric can be stabilized without damaging the weft during unwinding. it can. Further, the weft regulating body is divided into the first guide member and the second guide member, and since only the second guide member is movable with respect to the storage drum, winding around the storage drum can be stabilized. At the same time, maintenance of the length measurement storage device can be easily performed. further,
Since the second guide member can be moved regardless of the position of the weft-locking device, maintenance can be performed without removing the weft-locking device from the storage drum, which is extremely advantageous in terms of work.

When the end edge of the second guide member is located near the storage drum, the unwound weft does not come into sliding contact with the end edge of the second guide member, and the weft is less likely to be damaged. . Further, even when the first guide member and the second guide member have the same diameter, even if the weft thread slidably contacts the boundary portion, the contact state is uniform, and therefore the weft thread is less likely to be damaged.

[Brief description of drawings]

FIG. 1 is a plan view of a weft yarn storage device according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of this embodiment.

FIG. 3 is a left side view of the weft yarn storage device of this embodiment.

FIG. 4 is a vertical sectional view (a) and a plan view (b) showing an outline of a balloon guide of the weft yarn storage device of this embodiment.

FIG. 5 is a vertical sectional view (a) and a plan view (b) showing a modified example of the balloon guide of the weft yarn storage device of this embodiment.

FIG. 6 is a vertical sectional view (a) and a plan view (b) showing another modified example of the balloon guide of the weft yarn storage device of this embodiment.

FIG. 7 is a vertical sectional view (a) and a plan view (b) showing another modification of the balloon guide of the weft yarn storage device of this embodiment.

FIG. 8 is a vertical sectional view (a) and a plan view (b) showing another modification of the balloon guide of the weft yarn storage device of this embodiment.

FIG. 9 is a vertical sectional view (a) and a plan view (b) showing another modification of the balloon guide of the weft yarn storage device of this embodiment.

[Explanation of symbols]

10 Weft storage device 12 rotation axes 14 Fixed cover 16 Drive motor 18 Rotating yarn guide 20 bearings 22 Drum holder 24 Storage drum 26 Weft locking device 28 Electromagnetic solenoid 30 Weft locking pin 34 Ballooning Guide 36 bracket 38 First guide member 40 Second guide member 41 Through hole for weft locking device 44 holder 46 hook 48 locking member

Continuation of the front page (56) Bibliographic references Sho 60-127375 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) D03D 47/36

Claims (4)

(57) [Claims] Winding a storage drum, the weft yarn winding surface of the storage drum with a 1. A yarn winding surface is weft reservoir
A rotating yarn guide, a locking pin for engaging and disengaging the weft yarn with respect to the storage drum, and a release pin on the outer circumference of the storage drum.
A weft-locking device, which is arranged in-between and drives the locking pin, and is fixed in position with respect to the storage drum; and a weft-insertion direction while surrounding a yarn winding surface of the storage drum. In a weft storage device including a weft control body extending forward, the weft control body is positionally fixed with respect to the storage drum, and an edge on the storage drum side of the weft control body is larger than that of the rotary yarn guide.
It is formed continuously over the entire circumference in the front , and
The diameter is smaller than the rotation trajectory of the tip of the rotating yarn guide.
A first guide member that is extending in the weft insertion direction forward of the first guide member, separably configured at least partially from said first guide member without interference with the weft locking device And a second guide member that has been formed . 2. The end edge of the second guide member corresponding to the weft thread locking device is located forward of the portion of the corresponding weft thread locking device in the weft insertion direction. The weft storage device described. 3. The storage drum-side end of the second guide member is located at the position of the locking pin or on the storage drum side with respect to the position of the locking pin. Weft storage device. 4. The first guide member and the second guide member are formed to have the same diameter as each other, and when the second guide member is in a guide position in which the second guide member is connected to the first guide member, 4. The first guide member and the inner surface of the second guide member extend continuously.
The weft storage device according to any one of 1.