JPH07157951A - Heald separating device - Google Patents

Abstract

PURPOSE:To provide a heald separating device having a fixed curved amount of a heald, slightly causing extreme wear and damage of the separating device, capable of readily increasing speed, applicable to healds of various dimensions. CONSTITUTION:This device 1 has a first main body 21 and a second main body 31 apart from the first main body in the longer direction of a heald 4. The first main body is equipped with a stopper 23 which is laid movably in the longer direction of the heald and is engaged with and separated from one end of the heald during separation of the heald and the second main body is provided with a selector 33 which is installed movably in the longer direction of the heald and is approached and separated from the stopper while pushing the other end of the heald and bending during the separation of the heald. Further, the device is furnished with at least one of first transporting pawls 24 and 25 and at least one of second transporting pawls 34 and 35 which are attached to the first main body and the second main body and guide and support the heald during separation of the heald.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention separates a frontmost heald from a plurality of healds in an overlapped state for threading the heald, which is one of the steps for preparing a woven fabric, and separates the healds for conveying. Regarding the device.

[0002]

2. Description of the Related Art Generally, as one of the steps for preparing a woven cloth, a threading step is performed in which a large number of threads wound around a warp beam are passed through a heald. In the threading process, a heald separating process is required to separate the individual healds from the heald and supply the healds to the threading device in order.

Conventionally, as a device for carrying out such a process, a heald separating device for a loom disclosed in Japanese Patent Laid-Open No. 1-285051 has been known. In this device, a pair of abutting portions where both end edges of the heald abut against a tip position of a guide for moving a plurality of elastically deformable elongated healds in a laminating direction in a laminated state, and at least one abutting portion is the most abutting portion. It is provided so that only the tip heald can be curved while approaching the other abutting part, and it also pushes the back surface of the curved heald by entering into the gap created by the bending of the heald to push the heald forward. It is configured so that the piece can be retracted. In the case of this device, the locking position between the end of the heald and the abutting portion of the other is not fixed when the heald is bent, the amount of bending of the heald is not constant, and the heald to the conveying wheel that conveys the curved heald is large. There is a problem in that the transfer amount of the healds is not constant and it is difficult to increase the speed, and it is difficult to convey the healds due to warping of the healds.

Another conventional separation device is disclosed in Japanese Patent Laid-Open No. 4-3.
The one disclosed in Japanese Patent No. 70250 is also known. This device has a body disposed adjacent to a heald group composed of a plurality of healds supported by a heald holding member, and a slit for engaging with one end portion of the heald to be separated by forming a knife edge on the edge. A rotatable separation selector having a knife edge between the healds to be separated and an adjacent heald to separate by engaging the healds to be separated with the slit; It is provided with a nozzle that blows jet air to apply a pressure to the heald toward the separation selector, and a transfer claw that is rotatably mounted adjacent to the separation selector and that guides and supports the heald during the separation operation of the heald. . In the case of this device, the healds are chamfered in contact with the separating selector in order to facilitate the insertion of the knife edge of the separating selector between the heald to be separated and the adjacent heald. However, since the thickness of the heald is thin, the chamfered state is not constant over the entire cross section, and if the chamfering is insufficient, the knife edge of the separation selector between the adjacent healds enters. There is a problem that the gap between the two becomes insufficient, the knife edge hits the heald side surface and is damaged, and the knife edge is significantly worn. Further, when the shape of the heald is different, the separation selector and the heald holding member interfere with each other, so that the separation position of the heald is limited by a commercially available product.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems in the conventional heald separating device, and the heald has a constant amount of curvature, and the separating device is not significantly worn or damaged, so that the separating device can be easily and quickly operated. It is an object of the present invention to provide a device that can be realized and can be applied to healds of various shapes.

[0006]

To achieve the above object, the present invention provides one heald from a heald group consisting of a plurality of healds that are movably supported in a tightly packed state on a heald holding member. In a heald separating device that sequentially separates each of the healds, a first main body disposed adjacent to the heald group and a second main body disposed apart from the first main body in a longitudinal direction of the heald. A stopper that is movably attached to the first body in the longitudinal direction of the heald and that engages with or separates from one end of the heald to be separated during the separation of the heald; and the second body on the second body. Movably mounted in the longitudinal direction of the heald so as to press the other end of the heald to be separated during the separation of the heald to bend the heald to be separated so as to approach the stopper or separate from the stopper. Moved to Or a selector, at least one first transport pawl rotatably mounted on the first body and guiding and supporting the heald during separation of the heald, and rotatably mounted on the second body, And at least one second transport pawl for guiding and supporting the heald during separation of the heald.

[0007]

In the above structure, the stopper is engaged with one end of the heald to be separated, the selector is moved to abut against the other end of the heald to be separated, and the selector is further moved toward the stopper. As a result, the heald is curved. At this time, it is preferable that the healds are sprayed with a fluid in a direction to be separated to facilitate the separation of the healds to be separated. Next, the first transport pawl is rotated to engage and hold the curved heald, and then the selector is moved in the direction away from the stopper. At this time, in synchronization with the movement of the selector, the second conveying claw rotates and engages with the heald, and the other end of the heald is separated from the selector, and the heald is separated by the first conveying claw and the second conveying claw. It will be in a state of being guided and supported. Then, by moving the stopper away from the heald, one end of the heald is released from the engagement with the stopper, and the curvature of the heald is completely eliminated to complete the separation.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

Referring to FIG. 1, a front view of the heald separator of the present invention is shown generally at 1. This device is roughly divided into two parts. One is an upper part, generally indicated at 2, and the other is a lower part, generally indicated at 3, both parts operating independently of each other. The heald 4 has a known shape in which one guide hole is formed at each of both ends thereof, and a large number of healds 4 are densely arranged in parallel by members penetrating these guide holes. 40
Is formed. A plurality of similar heald groups 40 are arranged in parallel by a known method. These healds are sequentially supplied to the separating device by a feed brush 5 provided in the lower part.

FIG. 2 shows details of the upper part 2. The upper portion 2 is attached to a first body 21 firmly attached to a frame (not shown), a cylinder 22 attached to the first body 21, and a rod 22 of the cylinder 22. Possible stopper 23, two first transport pawls 24, 25 mounted on the lower part 211 of the first body 21, a drive device 6 for rotating the first transport pawls 24, 25, a first Body 21
The pulling head 26 is provided at the lower end portion 212 of the.

The stopper 23 engages and holds one end of the healds 4 to be separated supplied from the heald group 40.
Shoulder portion 231, a slant portion 232 that slants downward and extends from the shoulder portion 231, and a slant portion 23 from the tip of the slant portion 232.
An inclined portion 233 that extends in a direction opposite to that of 2 is formed, and a second shoulder portion 234 that is connected to the inclined portion 233 and engages and holds one end of the separated heald (FIG. 3b).

The first transfer claws 24 and 25 are the first main body 21.
Are arranged on the lower portion 211 at predetermined intervals in the vertical direction. Since the first transport claws 24 and 25 have the same structure, only the first transport claw 24 will be described below. The first conveying claw 24 includes a shaft 241 rotatably attached to a lower portion of the first main body 21, a feed plate 242 fitted to an end of the shaft 241 opposite to the heald group, and a heald of the shaft 241. It has a pulley 243 fitted to the end on the same side as the group. The feed plate 242 has two claws 24 arranged in a fork shape with a narrow groove 244 therebetween.
5, 246 are formed.

A rack 61 is built in the upper part of the first main body 21. The rack 61 is connected to a known mechanism such as an air cylinder or a screw nut and moves in a direction (perpendicular to the paper surface of FIG. 2) perpendicular to the conveying direction of the heald 4. Below the rack 61, a pinion gear 62 that meshes with the rack 61 is supported by the first main body 21. Pinion gear 62
A pulley 63 is attached to the endless timing of returning from the pulley 63 to the pulley 63 via the pulley 243 of the first conveying claw 24, the pulley of the first conveying claw 25, and the pulley 261 of the pulling head 26. A belt 64 is hung. Therefore, when the rack 61 is moved in the direction perpendicular to the carrying direction of the heald 4, the pinion gear 62 and the pulley 63 rotate, which causes the first carrying pawls 24, 2 to move.
5 can be rotated in both directions. A belt tensioner 65 is provided between the first transport claws 24 and 25. The rack 61, the pinion gear 62, the pulley 63, the timing belt 64, and the tensioner 65 constitute the drive device 6 that rotates the first transport claws 24 and 25.

FIG. 3 shows the details of the lower part 3. The lower portion 3 includes a second body 31 firmly attached to a frame (not shown), a cylinder 32 (or a known one such as a screw nut) attached to the lower side of the second body 31, and a cylinder. A selector 3 which is fixed to a rod 32 and can be moved up and down by a cylinder 32.
3, two second transfer claws 34 and 35 attached to the upper end 311 of the second main body 31, and a second transfer claw 34,
It is provided with a drive device 7 for rotating 35 and a feed brush 5 for sequentially supplying the healds of the heald group to the separating device.

The selector 33 is provided with a shoulder portion 331 for engaging and holding the other end of the healds 4 to be separated supplied from the heald group 40, a flat surface 332, and an inclined portion 333 (FIG. 3b). The shoulder portion 331 has a size slightly smaller than the thickness of one heald. The selector 33 can move up and down independently of the stopper 23, and
And the heald 4 is separated from the heald group 40.

The second conveying claws 34 and 35 are the second main body 31.
Are arranged at a predetermined interval in the vertical direction on the upper end portion 311 of the. Since the second transport claws 34 and 35 have the same structure, only the second transport claw 34 will be described below. The second conveying claw 34 includes a shaft 341 rotatably attached to an upper end portion of the second main body 31, and a feed plate 34 screwed to an end of the shaft 341 opposite to the heald group.
2 and the feed plate 342, the pinion gear 343 is attached to the shaft 341. The feed plate 342 has two claws 345 and 346 arranged in a fork shape with a narrow groove 344 therebetween.

The rod 321 of the cylinder 32 extends along the second body 31 and reaches almost the same position as the upper end of the second body 31. The rod 321 has a pinion gear 343 of each of the second conveying claws extending from the center to the tip.
A rack 322 that meshes with the rack 322 is formed, and a selector 33 is fixed at a position separated from the rack 322. Therefore, when the rod 321 of the cylinder 32 is moved up and down, the selector 33 is moved up and down, and the rack and pinion mechanism causes the second transfer claws 34 and 35 to rotate bidirectionally in synchronization with the up and down movement of the selector 33. Each pinion gear of the second conveying claw and the rack 322 constitute the drive device 7 for rotating the second conveying claws 34 and 35.

A feed brush 5 having a known shape is provided at a position adjacent to the selector 33 and the heald group 40. The feeding brush 5 is rotated in the direction of arrow A by a driving device (not shown) to supply the heald to the separating device.

As shown in FIGS. 3 and 4, it is desirable that the lower portion 3 is also provided with an air nozzle 8 serving as a fluid spraying device so that jet air is sprayed to the heald group 40 to provide a preload. In this embodiment, the air nozzle 8
Are provided on the side portion of the second main body 31 and have openings in the lower part of the heald 4 in the direction of ejecting air in the carrying direction. The air nozzle 8 communicates with an air port 81 formed in the main body 31, and air is jetted from the air nozzle 8 from an external air source (not shown) via the air port 81. As shown in FIG. 4, an air nozzle 8 ′ may be provided in the second main body 31 ′ adjacent to the second main body 31, and the air jet may be ejected toward the heald 4 from then on.

The operation of the above structure will be described below. As shown in FIG. 1, the heald group 40 is closely packed and supported. When the separation of the healds is started, the feed brush 5 rotates in the direction of arrow A (FIG. 3) to sequentially supply the heald groups to the separating device 1. At this time, jet air is jetted from the air nozzle 8 of the second main body 31 to cause the heald count 4
A preload is applied to 0 to facilitate engagement of the stopper 23 and the selector 33 with the most distal heald 4 of the heald group 40 to be separated. As a result, the state-of-the-art heald 4 shown in FIG.
As shown in (a), the shoulder portion 231 of the stopper 23 and the shoulder portion 331 of the selector 33 are engaged and held. In this state, the first conveying claws 24 and 25 and the second conveying claws 34,
In all, 35 is a state in which the feed plate faces downward.

Next, as shown in FIG. 5 (b), the selector 33 is moved up to bend the frontmost heald 4. At this time, it is desirable to blow an air jet from the nozzles 8 and 8 ′ toward the carrying direction so that the heald 4 is convex toward the carrying direction. As the heald 4 bends, the drive device 6 is urged to rotate both the first conveying claws 24 and 25 by a certain angle, so that the feed plate 242 moves in the conveying direction as shown in FIG. 5C. As the upper part of the curved heald 4 enters the groove 244 of each feed plate as it becomes horizontal, the heald 4 is lightly gripped in relation to the stopper 23.

Next, when the selector 33 is lowered, the engagement between the other end (lower end) of the heald 4 and the shoulder 331 and the inclined portion 333 of the selector 33 is released. Selector 33
As the second transport claws 34 and 35 both rotate 90 degrees in synchronization with the lowering of the feed plate 342 and the feed plate 342 becomes horizontal with respect to the transport direction, the lower part of the heald 4 which is about to return from the curved state is Groove 3 on each feed plate
44 and guided by the feed plate (FIG. 5).
(D)). In this state, one end (upper end) of the heald 4 is still engaged and held by the shoulder 231 of the stopper 23.

When the stopper 23 is raised from this state, the engagement between the one end of the heald 4 and the shoulder 231 and the inclined portion 232 of the stopper is released, and the one end of the heald 4 is inclined by the spring restoring force. 232 and slope 2
A state before bending is restored along 33 and a straight state is obtained (FIG. 6A).

Next, the stopper 23 is lowered to the position shown in FIG.
As shown in (b), one end of the heald 4 is engaged with the shoulder portion 234 of the stopper to position the heald 4 in the longitudinal direction. Next, the driving device 6 further rotates the first conveying claws 24 and 25 to securely clamp the heald 4 and align the direction of the through hole of the heald. In this state, the separation of the heald 4 is completed, and the threading of the heald is possible.

After the threading of the heald is completed, the first conveying claw 2
When the return rotation of Nos. 4 and 25 is performed and the selector 33 is moved up, the second transport pawl 3 is synchronized with the lift of the selector 33.
4, 35 are returned and rotated, and the heald 4 and the first transfer claw 24,
The engagement with 25 and the second transport claws 34, 35 is released. In this state, an air jet is blown onto the heald 4 to move it (FIG. 6 (c)). Thereby, the separation device is
Return to the state of (a). This completes one cycle of the heald separation process.

[0026]

As described above, according to the present invention, since the heddle is fixed by the movable stopper and the movable selector to keep the pressing amount constant, the bending amount of the heald is small and the bending amount is constant, and the conveying claw is constant. It was securely gripped by the feed plate, and the speed was increased. Further, since a large number of transport claws are provided, the influence of twisting of the heald can be minimized, and the transport claws and the healds are sequentially engaged from the central portion of the curvature of the heald toward the end portions. Since the common part that is not affected by the shape of the heald is the separation position of the heald, it can be applied to various types of healds. Furthermore, since the preload to the heald for separation is performed only by the feed brush and the air jet, a complicated mechanism is not required, and since the heald is mechanically separated, even if there is glue, oil film, etc., it is stable. It is possible to separate.

[Brief description of drawings]

FIG. 1 is an overall front view of a heald separation device of the present invention.

FIG. 2 is a front view showing a partial cross section of an upper portion of the heald separator.

FIG. 3a is a front view showing a partial cross section of a lower portion of the rudder separator. b is a partially enlarged sectional view of the stopper and the selector.

FIG. 4 is a plan view of the lower portion of the heald separator,
It is the figure which showed the position of the nozzle.

FIG. 5 is a diagram showing a process of separating a heald by a selector, a first conveying claw, and a second conveying claw.

FIG. 6 is a diagram showing a process of separating a heald by a selector, a first transport claw, and a second transport claw.

[Explanation of symbols]

1 Held Separator 2 Upper Part 3 Lower Part 4 Held 5 Feed Brush 6 Driving Device 7 Driving Device 8 Air Nozzle 21 First Body 23 Stopper 24 First Transfer Claw 25 First Transfer Claw 33 Selector 34 Second Transfer Claw 35 Second Transport Claw 40 Held Group

Claims (4)

[Claims] 1. A heald separating device for sequentially separating one heald from a heald group consisting of a plurality of healds movably supported in a state that the heald holding member is closely packed, is adjacent to the heald group. And a second main body disposed apart from the first main body in the longitudinal direction of the heald, and the first main body movable in the longitudinal direction of the heald. A stopper for engaging and separating one end of the heald to be separated during the separation of the heald; and a movably mounted longitudinal movement of the heald on the second body. A selector that pushes the other end of the heald to be separated during the separation to bend the heald to be separated and moves toward or away from the stopper, and is rotatable to the first main body. Mounted on And at least one first transport pawl for guiding and supporting the heald during separation of the heald, and at least one rotatably mounted to the second body for guiding and supporting the heald during separation of the heald. A heald separating device comprising a second conveying claw. 2. The heald separator according to claim 1, wherein the heald separator is provided adjacent to the heald group, and a fluid is directed toward the heald to be separated during a heald separation operation. The device for separating healds, further comprising a fluid spraying device for spraying the liquid to facilitate separation of the healds to be separated. 3. The heald separating device according to claim 1, wherein the stopper engages with a first shoulder portion that engages and holds one end of the heald to be separated, and one end of the separated heald. A heald separation device, characterized in that a second shoulder portion for holding and holding and a slant portion for connecting the first shoulder portion and the second shoulder portion are provided. 4. The heald separating apparatus according to claim 1, wherein the selector is provided with a step portion which is engaged only with the healds to be separated and has a size smaller than a thickness of one heald. A heald separation device characterized in that.