JP2001131847A - Weft yarn guidance device of rapier loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weft yarn guide of a rapier loom capable of remarkably increasing number of using yarns even though drive parts are as few as possible and compact. SOLUTION: This warp yarn guide 1 of a rapier loom 2 is installed to a front plate 4 to be rotatable at a position facing to a weaving end 41 of a woven fabric and constituted of a rotary disc 10 in which several yarn guides 22, 22,... are arranged along the peripheral direction of the disc 10, a drive means 18 and drive gear 16 for rotatively driving the rotary disc 10 to move a specific yarn guide 22A to a prescribed position and a warp yarn guide means 28 for guiding a warp yarn 24A from the yarn guide 22A moved to the prescribed position to an inserting position. The drive means 18 is constituted to be able to control the amount of rotation of the rotary disc 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically weaving a woven fabric using various types of wefts, such as re-weaving, chenille weaving, and Nishijin weaving, to produce a woven fabric with higher added value. The present invention relates to a weft guiding device for a rapier loom.

[0002]

2. Description of the Related Art In a current weft guiding device of a rapier loom,
A lever system with a number of levers corresponding to the number of wefts is adopted, and command signals related to weft selection from electronic jacquard etc. are transmitted via mechanical elements such as wires, levers, links, cams etc. It has become so. Therefore, when a weft selection command from an electronic jacquard or the like is transmitted to the weft guiding device, the weft guiding device swings each lever to select the weft, and guides the selected weft to the yarn capture position by the rapier. is there.

[0003]

However, in the lever system employed in the above-described conventional apparatus, each lever has a thread guide hole and a weft thread must be passed through each hole.
In addition, the mechanism for driving the lever itself is very complicated. In addition, a swing space must be secured so that the lever does not interfere with other parts, and the installation space is increased. For this reason, the number of levers deployed (ie,
The practical limit of the number of weft yarns is about 20, and beyond that, the number of weft yarns could not be easily increased and practical use has not been achieved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and it is possible to greatly increase the number of wefts to be used, despite the fact that the number of drive components is as small as possible and the structure is compact. It is an object of the present invention to provide a weft guiding device for a rapier loom.

[0005]

In order to achieve the above-mentioned object, a weft guiding device for a rapier loom according to the present invention comprises a plurality of wefts stretched between a plurality of yarn guides and a woven fabric, respectively. In a weft guiding device of a rapier loom that guides a weft from a specified yarn guide to a weft insertion position where the rapier can catch the yarn, captures the weft guided to the weft insertion position with the rapier, and inserts the warp opening. A rotating disk provided rotatably at a position facing the woven cloth and the plurality of yarn guides are provided along a circumferential direction of the disk; and moving the specific yarn guide to a preset predetermined position. And a weft guiding means for guiding the weft from the yarn guide moved to a predetermined position to the weft insertion position where the rapier can catch the yarn.

Further, in the above arrangement, the driving means for driving the rotating disk to rotate can control the amount of rotation of the rotating disk.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an external view showing a weft guiding device of a rapier loom according to an embodiment of the present invention, FIG. 2 is a side view of the weft guiding device, FIG. 3 is a front view of the weft guiding device,
FIG. 4 is a sectional view taken along line AA in FIG. In each of the drawings, a weft guiding device 1 according to the present embodiment includes a bottom plate 3, a front plate 4 erected at a front portion of the bottom plate 3, and a fixed plate 5 erected at a rear portion of the bottom plate 3. A pedestal is provided, and is provided at a position facing the woven fabric 40 (see FIGS. 6 and 7) on the side of the rapier loom 2.

In front of the front opening 6 of the front plate 4, a ring-shaped rotating disk 10 having a ring opening 11 is rotatably provided. Then, the round hole-shaped thread guides 22, 22,
Are provided on the rotating disk 10 at appropriate intervals along the circumferential direction thereof, for example. These thread guides 2
The hole edges of 2, 22,... Are made of a titanium alloy that is lightweight and has excellent wear resistance. On the outer peripheral surface of the rotating disk 10, a rail groove 12 is formed over the entire circumference. At the position sandwiching the rail groove 12 on the outer peripheral surface of the rotating disk 10, the outer peripheral teeth 2 are provided.
0 and 20 are engraved over the entire circumference. Then, three holding wheels 13, 1 pivotally supported on the front surface of the front plate 4, respectively.
By rotating the rails 4 and 15 in the rail groove 12, the rotating disk 10 can be rotated without falling off the front plate 4.

A driving gear 16 having outer peripheral teeth 19 on the outer peripheral surface is provided at a diagonal position of the holding wheel 14. The driving gear 16 is driven by a driving means 18 fixed on the back of the front plate 4.
, And the outer teeth 19 mesh with the outer teeth 20 of the rotating disk 10. In this case, the driving means 18 is constituted by, for example, a servomotor with a rotary encoder, and is capable of controlling the rotation amount of the rotating disk 10 with high accuracy. On the other hand, a cylindrical tubular body 9 is adhered to the front surface of the fixing plate 5. The tip of the cylindrical body 9 is inserted into the ring opening 11 of the rotating disk 10. A protective tube 8 for guiding the power supply tube 36 to the outside is connected to the rear opening 7 of the fixed plate 5. .. Corresponding to the thread guides 22, 22,... Of the rotating disk 10, for example, 30 fixed-side thread guides 23, 23,.
Are provided on the fixed plate 5 along the vicinity of the outer periphery of the cylindrical body 9.

An actuator 29 disposed in front of the cylinder opening 21 of the cylinder 9, an elevating rod 30 directly connected to the driving end of the actuator 29 and moving up and down, and a Y-shaped member provided at the upper end of the elevating rod 30 A thread selecting means 26 is constituted by the thread receiving hook 31 having the shape of a circle. The thread catch 3
Reference numeral 1 denotes an arrangement capable of moving up and down in front of a specific thread guide 22A to be inserted. The actuator 29 is formed of, for example, an air cylinder, and is fixed to the inner surface of the cylinder 9 via a supporting plate 35. When an air cylinder is used as the actuator 29, the power supply pipe 36 is constituted by an air supply pipe.

An actuator 34 composed of a rotary solenoid or the like, a swing lever 33 directly connected to the drive shaft of the actuator 34 and capable of swinging above the rotating disk 10 in a lateral direction, and a tip of the swing lever 33 The thread hooks 32 provided constitute a thread guiding means 27. That is, the above-described yarn selecting means 26, the yarn guiding means 27, and the rotating disk 10 constitute the weft guiding means 28.

The control system of the weft guiding device 1 is shown in FIG.
Shown in In the figure, reference numeral 37 denotes a control device for controlling the weft guiding device 1, reference numeral 38 denotes an electronic jacquard connected to the signal input side of the control device 37, and reference numeral 39 denotes a keyboard and a mouse connected to the signal input side of the control device 37. And manual input means represented by The control device 37 is composed of, for example, a sequencer. The control device 37 is based on a timing signal relating to weaving from the rapier loom 2, a weft selection signal from an existing electronic jacquard 38, or weaving pattern information manually input separately from the manual input unit 39. The amount of rotation of the rotary disk 10 (positioning of the yarn guide 22), the expansion / contraction operation of the lifting / lowering rod 30 of the yarn selection means 26, the swinging operation of the swing lever 33 of the yarn guiding means 27, and the like are performed comprehensively. I have.

As shown in FIGS. 6 and 7, the rapier loom 2 includes a loom main body (not shown) for weaving the woven fabric 40 with the warps 43 and the wefts 24, and a number of warps 43A, 43A,.
.. a rapier 44 that moves in a weft direction in a warp opening 42 in which a group of a plurality of warps 43B, 43B,... Are open to each other, and a rapier drive that reciprocates the rapier 44 in a weft direction. The apparatus includes a device 45 and a cutter 46 disposed near the woven fabric 40 for cutting the weft yarn 24 connected to the woven end 41.

Next, the operation of guiding the weft yarn 24 by the weft guiding device 1 will be described. A weft 24 supplied from a yarn supplying body 25 such as a bobbin passes through a fixed-side yarn guide 23 in advance, and then passes through a side of the cylinder 9 to form a yarn guide 22 of the rotating disk 10.
And is connected to the woven end 41 of the woven fabric 40 woven by the rapier loom 2. Then, when the control device 37 receives a signal related to weft guidance from the rapier loom 2, the electronic jacquard 38, or the manual input means 39, the control device 37
Drives the driving means 18, the actuator 29, the actuator 34 and the like as appropriate.

First, the drive means 18 passes a weft yarn 24A to be inserted from now on through a predetermined position (in this embodiment, for example, the uppermost position on the rotating disk 10 in FIGS. 1, 3, and 6). Specific thread guide 22
The rotating disk 10 is rotationally driven so as to move A.
Next, the yarn receiving hook 31 of the yarn selecting means 26 is provided with 30 wefts 24, 24, 24, which are stretched between the 30 yarn guides 22, 22,. ..., the weft yarn 24A from the yarn guide 22A positioned at the predetermined position is lifted upward and brought to the hooking position of the yarn hooking hook 32 of the yarn guiding means 27. And
The thread hook 32 of the thread guiding means 27 hooks the weft 24A and swings, and the weft 24A from the thread guide 22A is turned into a rapier 44.
(A rapier 44 shown by a solid line in FIG. 6 and a rapier 44 shown by a two-dot chain line in FIG. 7)
Is the position of the weft 24A that can be caught by each.

Then, in the rapier loom 2, the rapier drive unit 45 drives the rapier 44 to move the rapier 44 and move the warp shedding section 4.
2 to reach the weft insertion position. The rapier 44 grips the weft yarn 24A at the weft insertion position. Immediately thereafter, the weft 24A gripped near the weaving end 41 is
Cut at And the rapier 44 is the grabbed weft 24A
Is drawn into the warp opening 42 of the weaving end 41 and is conveyed to just before the rapier driving device 45. Subsequently, the warps 43A, 43A,.
.. Cross vertically and close the warp opening 42.
Immediately thereafter, the weft 24A is released from the rapier 44. Almost at the same time, the weft 24
A is removed. Next, the woven end 4 of the closed warp opening 42
1 is beaten with a lead, and the weft 24A is packed in the weaving end 41, and a series of steps is completed. Such a series of steps is repeated, and the woven fabric 40 is woven.

As described in detail above, the weft guiding device 1 of the rapier loom 2 accurately positions the yarn guide 22 at a fixed position by the rotation of the rotary disk 10, and furthermore, the weft guiding device 28 controls the weft 24. Take out and guide. That is, the thread catch hook 31 can lift any of the wefts 24 to the same position, so that it can be reliably delivered to the swing lever 33. Further, the movement of the swing lever 33 is simple. Therefore, the mechanism is simple, there is little malfunction, and no maintenance is required.

Also, the weft guiding device 1 does not take a large device size in one direction as in the case where a plurality of yarn guides 22, 22,... Are arranged in a line, and the installation space is the same. In this case, the apparatus can be made much more compact than the conventional apparatus. By the way, even if the rotating disk 10 has a diameter of about 10 cm, it is 1 cm in the circumferential direction.
Approximately 30 yarn guides 22 can be provided at a pitch or approximately 60 yarn guides 22 at a 0.5 cm pitch, and weft yarns 24 of a type corresponding to the number can be used. The number of the yarn guides 22 can be increased by changing the diameter of the rotating disk 10 or the drilling pitch (circumferential direction) of the yarn guides 22, and the number of weft yarns 24 can be dramatically increased to, for example, 100 or more. It is.

Since the weft guiding device 1 uses a servomotor as the driving means 18, the positioning of the yarn guide 22 can be performed extremely accurately. In addition, since the weft guiding device 1 is configured independently of the rapier loom 2, it can be retrofitted to the existing rapier loom 2, and the existing equipment can be effectively used without waste. Further, since signals from the electronic jacquard 38 and the like are transmitted by an optical fiber or an electric signal cable, the signal transmission path is not limited unlike the mechanical type, and the driving method can be easily realized by a program such as a sequencer. The degree of freedom is great.

When changing the weft yarn 24 to be inserted, the rotating disk 10 may be rotated clockwise or counterclockwise by a maximum of 180 degrees. That is, as shown in FIG. 8, when the rotating disk 10 rotates 180 degrees,
The yarn guide 22 originally located at the uppermost position of the rotating disk 10
A reaches the lowermost position, and the yarn guide 22B that was originally at the lowermost position reaches the uppermost position. At this time, for example, the fixing plate 5
From the uppermost fixed-side thread guide 23A to the thread guide 22A.
The weft 24A from the lower end of the cylindrical body 9 is skewed while being supported by the outer peripheral surface of the cylindrical body 9, and the weft 24B from the lowermost fixed side yarn guide 23B to the yarn guide 22B is also skewed on the outer peripheral surface of the cylindrical body 9 by the fixing plate 5. I do. In this case, if the tubular body 9 does not exist, the adjacent wefts 24 are entangled between the fixed-side yarn guide 23 and the yarn guide 22. However, since the weft guiding device 1 has the cylindrical body 9, the rotation of the rotary disk 10 causes the wefts 24, 24,.
Are skewed, the wefts 24, 24,... Are supported by the outer peripheral surface of the cylindrical body 9 and are arranged at appropriate intervals. Therefore, the adjacent wefts 24 are not entangled and are guided stably. In returning the rotational position of the rotating disk 10, the wefts 24, 24,.
Are released by general-purpose yarn tensioning means (not shown) individually arranged between the yarn supplying body 25 and the fixed-side yarn guide 23.

In the above, the ring-shaped rotary disk 1 has been exemplified, but the present invention is not limited to this, and as shown in FIG. 9, a weft guiding device 1a using a flat rotary disk 10a may be used. This weft guiding device 1a includes a flat rotating disk 10
The drive shaft 17 of the drive means 18 is directly connected to a so that the rotation amount of the rotating disk 10a is directly controlled. Then, the yarn guide 22A and the weaving end 4
A thread hook 47 is arranged so as to reach the weft 24A (solid line) stretched between the hooks 1 and 2. The thread hook 47 is driven up and down by an actuator 48. That is, here, the hook 47, the actuator 48, and the rotating disk 10a
Thus, the weft guiding means 28a is configured.

According to the weft guiding means 28a, the weft 24A at the position shown by the solid line is pulled up by the hook 47.
As a result, the weft yarn 24A is guided to the position indicated by the two-dot chain line, that is, the weft insertion position where the rapier 44 (two-dot chain line) can catch the yarn. Such a weft guiding device 1a
In this case, since the rotating disk 10a is directly connected to the driving means 18, no intermediate power transmission parts are required, the configuration is simplified, and the control error of the rotation amount is further reduced. Also,
Since the movement of the hook 47, which constitutes the weft guiding means 28a, only moves up and down in one direction, a complicated arm swinging mechanism and a thread pushing-up mechanism are not required, and a highly reliable device with less failure is provided. Is done.

In the above embodiment, one weft 24 is used to pass through one yarn guide 22, but the present invention is not limited to this. For example, if two or more wefts are passed through one yarn guide 22, two or more wefts can be taken out at one time and guided to the weft insertion position. Further, in the above description, the yarn guide 22 and the fixed-side yarn guide 23 are formed in a round hole shape. However, the yarn guide of the present invention may be an elliptical hole or an elliptical hole, or the rotating disk 10
May be formed in a groove shape that is continuous with the outer periphery of. And
As the driving means 18 that can control the amount of rotation of the rotating disk 10, besides a servomotor with a rotary encoder,
It is also possible to use a pulse motor or the like by feedforward control of a pulse signal. Further, the drive sources of the actuators 29, 34, 48 are not particularly limited, and those that are easily available in the installation environment of the device, such as air pressure, electric power, oil pressure, and water pressure, may be appropriately selected.

[0024]

As described above, according to the weft guiding device of the rapier loom according to the present invention, the yarn guide is accurately positioned at a fixed position by the rotation of the rotating disk, and the weft from the positioned yarn guide is removed. Since it is guided by one weft guiding means, the mechanism is simple, there are few malfunctions, and no maintenance is required. That is, when the installation space is the same, the device can be configured to be much more compact than the conventional device. In addition, the number of yarn guides can be increased by changing the diameter of the rotating disk and the pitch at which the yarn guides are pierced, and the number of weft yarns can be dramatically increased. Furthermore, since it can be constituted separately and independently from the rapier loom, it can be retrofitted to an existing rapier loom.

When the driving means is configured to be able to control the amount of rotation of the rotating disk, the rotating disk can be driven to rotate with high accuracy, and the positioning of the thread guide of the rotating disk can be performed very accurately. it can. Thereby, it is possible to prevent a malfunction such as erroneously guiding a non-specific weft.

[Brief description of the drawings]

FIG. 1 is an external view showing a weft guiding device of a rapier loom according to an embodiment of the present invention.

FIG. 2 is a side view of the weft guiding device.

FIG. 3 is a front view of the weft guiding device.

FIG. 4 is a sectional view taken along line AA in FIG.

FIG. 5 is a block diagram showing a control configuration of the weft guiding device.

FIG. 6 is an explanatory diagram for explaining a weft thread insertion operation in a rapier loom using the weft guiding device.

FIG. 7 is an explanatory diagram of a thread insertion operation viewed from a different direction from FIG. 6;

FIG. 8 is an explanatory view of a state in which a rotating disk of the weft guiding device is rotated.

FIG. 9 is an external view showing a weft guiding device of a rapier loom according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Weft guiding device 2 Rapier loom 4 Front plate 10, 10a Rotating disk 16 Drive gear 17 Drive shaft 18 Drive means 22, 22, A, 22B Thread guide 24, 24A, 24B Weft 28, 28a Weft guide 40 woven cloth 42 warp Opening 44 Rapier

Claims (2)

[Claims] 1. A weft from a specified yarn guide among a plurality of wefts stretched between a plurality of yarn guides and a woven fabric, is guided to a weft insertion position where a rapier can catch a yarn,
In a weft guiding device of a rapier weaving machine for catching a weft guided to a weft insertion position with a rapier and inserting the weft through a warp opening, the plurality of yarn guides are rotatably disposed at a position facing the woven fabric. A driving means for rotating the rotating disk so as to move the specific yarn guide to a predetermined position, and a yarn guide moved to the predetermined position. And a weft guiding means for guiding the weft to a weft insertion position where the rapier can catch the yarn. 2. The weft guiding device for a rapier loom according to claim 1, wherein the drive means for rotatingly driving the rotating disk is configured to control the amount of rotation of the rotating disk.