JP2629091B2 - Heald separation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heald separating apparatus for separating each heald from a plurality of healds in an overlapping state for threading the heald, which is one of the preparation steps of a woven fabric.

[0002]

2. Description of the Related Art In general, a threading step of passing a number of yarns wound around a warp yarn beam through a heald one by one is performed as one of the preparation steps of a woven fabric. In this threading process,
There is a need for a heald separation process that separates individual healds from a plurality of healds that are closely packed and supported by a heald holding rail and sequentially supplies the healds to a threading device.

Conventionally, as one of the apparatuses for performing such a process, an apparatus described in Japanese Patent Application Laid-Open No. 58-65044 is known. This device is provided with a blow nozzle at one end of at least one blower tube and a suction nozzle which is turned in the opposite direction and is fitted into the blow nozzle, and a magnet is attached to a tip portion of the suction nozzle. In this method, the attraction force of the nozzle and the magnet cooperate to separate individual healds from a plurality of healds. In the case of this device, the glue used in the fiber process is usually attached to the heald, and the heald may be held in a state where the healds are lightly adhered to each other by this glue. There are cases.

[0004] Another conventional separation device is disclosed in
The thing described in 20666 gazette is known. The device alternates between front and rear healds by means of a heald selector having a separating cam rotatably mounted from a plurality of front and rear double healds supported alternately on heald holding rails. Is to be separated. This device is intended for a double heald as described above, wherein each front heald and rear heald are each formed symmetrically at an intermediate portion, and the separating cams engage with the intermediate portions and alternately. What separates. Therefore, it cannot be applied to a single type heald.

[0005] Still another conventional device is disclosed in Japanese Patent Application Laid-Open No. 64-2.
No. 0358 is known. In this device, a first group of healds and a second group of healds, each of which is composed of a number of healds held on a heald holding rail, are arranged symmetrically in parallel, and a slit for separating the individual healds is formed. The upper and lower heald removal and positioning mechanisms having guide members separate and transport individual healds in order from any one of the heald groups. In the case of this device, there is a problem that the separation procedure is complicated, and there are many erroneous operations when the heald groups are arranged alternately in order from the symmetrically arranged heald group.

[0006]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the conventional heald separation apparatus, and is applicable to both a double heald and a single heald, and is used for a heald used in a fiber process. It is an object of the present invention to provide a heald separation device that can be reliably separated even if it is attached and that does not malfunction.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a heald group consisting of a plurality of healds movably supported in a tightly packed state on a heald holding member. An apparatus for separating a heald to be separated, comprising a body disposed adjacent to the group of healds, and a slit having a knife edge formed at an edge thereof to engage a wide portion of one end of the heald to be separated. A rotatable separation selector for causing the knife edge to enter the heald to be separated and the heald adjacent thereto and separating the heald to be separated by engaging with the slit, and jetting air to the healds of the heald group. A nozzle mounted on the body to preload the heald towards the separation selector prior to separation of the heald, and perpendicular to the axis of rotation of the separation selector And rotatably mounted adjacent the separate selector countercurrent, is configured to include a conveying claw for guiding and holding the heald during the separation operation of the heddle, a.

[0008]

In the above construction, an appropriate preload is applied to the heald in the moving direction of the heald by the jet air ejected from the air nozzle. The knife edge of the separation selector penetrates between the heald to be separated from the heald of the group of healds and the heald adjacent thereto, and the heald enters the slit of the separation selector and is separated by rotating the separation selector. During the separating operation, the heald is guided and held by the transport claw.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heald separation apparatus according to the present invention will be described below with reference to the drawings.

Referring to FIG. 1, a device for threading a heald is shown generally at 1. The heald 2 is of a known shape, and is formed in a thin plate shape in the vertical direction, and has a thread passing hole 21 in the center and one guide hole 24, 25 at both ends 22, 23. The upper heald holding member 3 is provided in each of the guide holes 24 and 25 of the heald 2.
1. The lower heald holding member 32 penetrates to form the heald group 20, and a plurality of other similar heald groups are arranged in parallel by a known method. The healds of each heald group are supported by one end of the upper and lower heald holding members 31 and 32 in a state of being tightly integrated.

A carriage 5 movable along a rail 41 provided on the base 4 is provided below the lower heald holding member 32. The carriage 5 is not shown in a direction parallel to the moving direction of the heald 2. It is moved by the drive. The carriage 5 has a threading mechanism 6 between each lower heald holding member in a state of being arranged in parallel with each lower heald holding member 32.
Are arranged. The threading mechanism 6 has a known structure.

The carriage 5 is further provided with a heald separating device 7 described below below each threading mechanism 6.
Further, a preload auxiliary mechanism 80 described later is arranged in front of the threading mechanism 6 (on the side where the heald group is located). Both ends of the preload assist mechanism 80 are swingably supported by brackets provided on the carriage 5.

FIG. 2 is an enlarged side view of the heald separating device 7 and the preload auxiliary mechanism 80. The heald separation device 7 includes a main body 71, a separation selector 72 attached to a rotating shaft projecting from the main body, a first transport claw 73 located above the separating selector 72 and attached to the rotating shaft projecting from the main body, and A second transport claw 74 similar to the first transport claw is provided above the first transport claw 72. The separation selector 72 and the first and second transport claws 73 and 74 are respectively provided with a rack and a pinion mechanism 7 disposed inside the main body 71.
0 is driven in a known manner. An air nozzle 711 is formed on one side surface of the main body 71. The air nozzle 711 communicates with a tube 712 formed in the main body and a tube 51 (FIG. 3) formed inside the carriage 5 and having a connector 52 on a side of the carriage 5. Through an air hose (not shown), the connector 52 of the carriage 5 and the pipe 51,
It is ejected from the air nozzle 711 through the pipe 712.

The separation selector 72 has a cylindrical boss 721 and a substantially annular cam 722 formed at one end of the boss as shown in FIG. A slit 723 having a width of one heald 2 is formed at one position of the cam 722 in parallel with a plane perpendicular to the long axis of the separation selector 72. FIG. 5 is a development view of the cam 722.
In FIG. 5, the cam portion 724 below the slit 723
The upper surface 725 is inclined so as to become thinner toward the slit 723, and a knife edge 726 is formed at a tip end defining the slit 723. Slit 723
The upper surface 728 of the upper cam portion 727 is inclined so that the tip portion becomes thinner toward the slit, while
The lower surface 729 is formed in a concave shape. The separation selector 72 is rotatable bidirectionally within an angle range of about 90 ° by a rack and a pinion mechanism 70 disposed inside the main body.

As shown in FIG. 6, a first transporting claw 73 is attached to the boss 731 having a substantially cylindrical shape by a known method such as a bolt or the like, and a feed plate 732 protrudes from the boss 731 in a radial direction. have. The feed plate 732 is formed with two forks 733 and 734 ′ arranged in a fork shape with a narrow groove 733 therebetween, and each of the claws 732 and 734 ′ faces the opposite side (outside) of the main body 71. The surface 735, 735 'of the front end section has a shape inclined toward the main body 71 side (inside) in the distal end area. Further, a protrusion 737 is formed on the inner surface 736 of the claw 734 ′ so as to protrude inward at the tip.
The first transport claw 73 is moved about 90 degrees by a rack and a pinion mechanism 70 disposed inside the main body similarly to the separation selector 72.
It is rotatable bidirectionally within the angle range of ° to 120 °, and its rotation is started slightly later than the start of rotation of the separation selector.

Returning to FIG. 2, a second transport claw 74 is arranged above the first transport claw 73 at a distance from the first transport claw. The second transport claw 74 has the same structure as the first transport claw 73 and rotates slightly later than the rotation of the first transport claw. In the present embodiment, the first and second transport claws 73 and 74 are provided, but the first and second transport claws may be provided only.

As shown in FIG. 3, a preload auxiliary mechanism 80 is a long plate-shaped preload auxiliary plate 81 having a fork shape as a whole.
It has. The auxiliary preloading plate 81 has a plurality of arms 82 extending in a cantilever manner, and the arms 82 are arranged below the lower heald holding member 32 between the heald separating devices 7 arranged in parallel. . A groove 8 extending in the width direction over the entire width of the arm is provided at a position close to the tip of the arm portion 82.
3 are formed. Housings 84 are attached to both ends of the preload auxiliary plate 81, and the housing 84 supports two eccentric cams 85 and 85 'arranged inside (FIG. 2). The eccentric cams 85, 85 'are
1 and is fixed to a pair of rotating shafts 86 and 86 'which are driven to rotate by a known method. Accordingly, the preload auxiliary plate 81 is moved in the directions of arrows C and D through the cam engagement of the housing 84 and the eccentric cams 85, 85 'with the rotation of the rotary shafts 86, 86'. Rocked. The rotating shafts 86 and 86 'are rotatably supported at both ends by brackets 53 attached to both ends of the carriage 5.

The operation of the above configuration will be described below. In FIG. 1, the heald group 20 includes heald holding members 31, 32.
The carriage 5 is tightly supported at one end of the
Is located away from the healds. When starting the separation operation of the heald, the carriage 5 approaches the heald group 20 and stops at the position of the front row of the heald group. On this occasion,
As shown in FIG. 7, jet air is ejected from an air nozzle of a main body 71 of the heald separation device 7 to apply a preload to the heald group 20, thereby facilitating engagement between the separation selector 72 and the heald. The jet air is ejected from a block having an air nozzle on the side opposite to the heald separation device 7 or an air nozzle provided on the main body of the adjacent separation device, as shown by a chain line in FIG. You may do so. Next, the separation selector 72
To cause the knife edge 726 of the cam portion 724 to enter between the heald 2 in the front row of the heald group 20 and the next heald. As shown in FIG. 8, as the separation selector 72 is rotated, the heald 2 passes through the slit 723 and the cam portion 7.
24 along a surface 725. When the heald 2 has completely passed through the slit 723, the separation selector 72 reversely rotates. Then, the heald 2 is separated by moving along the surface 728 of the cam portion 727. In this case, the cam 722 engages the wider portion of the end 23 of the heald 2.
This wide portion of the heald 2 is a common portion having a fixed width regardless of whether it is a double heald or a single heald. That is, since the central portion of the heald and the separation selector are not engaged as in the conventional double heald separation device, even if the central portion is alternately and symmetrically arranged as in the double heald, it is influenced by the separation selector. Never. Therefore, the present invention can be applied to the case of a double heald (FIG. 9). When the heald 2 is engaged with the cam 722 of the separation selector 72 by applying a preload with jet air to facilitate the engagement, since the heald 2 has a thin plate shape, a "warp" occurs, which hinders the engagement. May occur. In such a case,
By operating the preload auxiliary mechanism 80, the preload auxiliary plate 81 is swung in the directions of arrows C and D in FIG. 3 by the action of the eccentric cams 85 and 85 '. It is possible to correct the warpage.

The first transport claw 73 starts rotating slightly after the rotation of the separation selector 72 starts. The feed plate of the first transport claw is initially oriented upward. As the first transport claw 73 rotates downward, the groove 733 is formed.
The penetrated heald 2 'that was in the surface 7 of the claw 734'
It moves to the tip of the pawl 734 'along 36, moves over the protruding portion 737 of the pawl 734' with the upper end surface 729 'of the cam 727 as a support surface, separates from the groove 733, and moves to the surface 735'. Next, when the separation selector 72 is switched to the reverse rotation, the feed plate of the transport claw also rotates in the reverse direction and faces upward. As a result, the heald 2 to be separated engages with the surface 735 of the pawl 734 and is guided into the groove 733, and the heald separation operation is completed. Further, the heald 2 'which has been passed through is the face 73 of the claw 734'.
It moves by engaging with 5 'and is discharged from the feed plate.

The second transport pawl 74 starts rotating slightly later than the first transport pawl 73, and operates in the same manner as the first transport pawl to further ensure the separation operation. In this embodiment, the first and second transport claws are provided, but only the first transport nail may be provided.

[0021]

As described above, the heald separation apparatus of the present invention employs a system in which a separation selector and a transport claw are used to directly separate mechanically, so that healds separated from each other by glue or an oil film adhered to the heald. Separation can be reliably and stably performed even when close contact has occurred, and malfunction in the separation order has been eliminated even when a plurality of rows are separated.

Further, since the engagement position between the separation selector and the heald is engaged at the wide portion of the end of the heald, that is, at the common portion of the double heald and the single heald, it can be applied to both the double heald and the single heald. In addition, the effect of warp and twist of the heald is relatively small as compared with the case where the heald is separated at the center of the heald, and reliable operation is possible. Further, since the preload is performed by jet air prior to the heald separation, a complicated preload mechanism is not required, and consumables are eliminated.

[Brief description of the drawings]

FIG. 1 is a diagram showing an entire device for threading a heald.

FIG. 2 is an enlarged view of a side surface of a heald separating device and a preload auxiliary device.

FIG. 3 is a perspective view of a heald separating device and a preload auxiliary device.

FIG. 4 is an enlarged view of a separation selector of the heald separation device.

5 is an expanded view of a cam portion of the separation selector of FIG.

FIG. 6 is an enlarged view of a transport claw of the heald separation device.

FIG. 7 is a diagram showing a state in which a preload is applied to the heald group by jet air.

FIG. 8 is a diagram illustrating a process of separating a heald by a separation selector and a first transport claw.

FIG. 9 is a diagram showing a position where the separation selector and the heald engage with each other.

[Explanation of symbols]

2: heald, 20: heald group, 31: heald holding member,
32: heald holding member, 7: heald separating device, 71: heald
Main body, 711: air nozzle, 72: separation selector, 72
3: slit, 726: knife edge, 73: transport claw,
74: transport claw, 80: preload assist mechanism.

Claims (1)

(57) [Claims] 1. A heald separation device for sequentially separating healds one by one from a heald group consisting of a plurality of healds movably supported in a state of being densely gathered on a heald holding member, comprising: And a slit having a knife edge formed at an edge thereof for engaging a wide portion at one end of the heald to be separated, and the knife edge is separated from the heald to be separated and adjacent thereto. and separating the selector rotatable to separate by by entering between the heald into engagement with the slit of the heald to be the separation of, by blowing air jets in the heddle of the heald group, Hell
A nozzle mounted on the body to preload the heald toward the separation selector prior to separation of the blade, and perpendicular to the rotation axis of the separation selector and adjacent to the separation selector. A conveying claw rotatably mounted to guide and hold the heald during the heald separation operation.