JPH05195371A - Apparatus for guiding warp yarn of loom - Google Patents

Abstract

PURPOSE:To smooth the movement of warp yarn moving in pressure contact with the outer periphery of a compensator cam of a loom for triaxial woven fabrics, etc., in the weaving width direction during the weaving. CONSTITUTION:A compensator cam 32 between a triaxial weaving mechanism 25 for interweaving many warp yarns (a) while moving the warp yarns relatively to weft yarns and a warp yarn feeding part 2 horizontally rotating synchronously with the movement of the warp yarns in the triaxial weaving mechanism 25 is equipped with a vibrator 40 and the warp yarns (a) are slid and guided with the compensator cam 32. The compensator cam 32 is attached through a vibration-proof member 29 to a support 28 hung from a traverse frame 27 so as not transmit the vibration of the compensator cam 32 to the support 28. Vibration is applied to the compensator cam 32 itself with the vibrator 40 installed in the compensator cam 32. Thereby, the warp yarns (a) are smoothly moved in the weaving width direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warp guide device provided with a compensator cam for making a warp length substantially constant between a warp supply section and a weaving section of a triaxial weaving loom or a circular loom.

[0002]

2. Description of the Related Art As a conventional warp guide device for a triaxial weaving loom, a plurality of warp beams around which a large number of warps are wound are horizontally rotated above a machine frame, as disclosed in JP-A-1-201550. The warp supplying section is formed by annularly attaching to the annular support provided so that the running length of the warp is relatively large at the intermediate portion between each beam and the triaxial weaving mechanism below the warp supplying section. In order to be constant, a compensator cam is provided which has a substantially elliptical outer circumference and a guide surface with a slight depression on both sides of the central part in the longitudinal direction. When the warp guided by the guide surface of the compensator cam is circulated in the width direction along the weaving of the triaxial woven fabric by the yarn guide of the movable yarn guide device provided below the compensator cam, the warp tension applied to the warp causes the warp to move. The compensator cam is moved in the cloth fell direction while being in pressure contact and sliding contact with the guide surface. The compensator cam having the guide surface is fixed to a suspension frame suspended from the machine frame, and the entirety of the compensator cam is integrated with the machine frame.

[0003]

As described above, due to the tension of the warp, the warp is pressed against the guide surface of the compensator cam,
In the case of sliding type, even if the guide surface of the compensator cam is smooth and easy to move in the width direction, the friction force generated by the warp tension of the warp in contact with the guide surface and the warp Movements of the warp yarns in the weft width direction may be hindered by deposits such as various oil agents. In that case, there has been a problem that smooth movement of the warp in the width direction is obstructed, resulting in overtension in the warp and unevenness of the fabric, which lowers the commercial value of the woven fabric. Therefore, the present invention is to provide a warp guide device for a triaxial weaving machine or the like so that the warp can easily move along the guide surface of the compensator cam in the weft width direction.

[0004]

In order to solve the above-mentioned problems, the present invention relates to a weaving section in which a large number of warp threads are interwoven while moving with respect to the weft thread, and a warp thread movement of the weaving section above the weaving section. Weaving triaxial woven fabric, etc. equipped with a compensator cam for sliding and guiding the warp between it and the horizontally rotating warp supply part to make the warp length between the warp supply part and the weaving part almost constant. In the warp guide device of the loom, a compensator cam is mounted on a support hung from the machine frame via a vibration isolating member, and a vibrating device for vibrating the compensator cam is provided.

[0005]

In the case of weaving, the warp threads are slid by a compensator cam between the weaving section that interweaves a large number of warp threads with respect to the weft threads and the warp thread supplying section that horizontally rotates as the warp threads of the weaving section move. The warp yarns are dynamically guided so that the warp yarn length between the warp yarn supplying portion and the weaving portion is substantially constant. Attach the compensator cam to the support hung from the machine frame via the anti-vibration member,
The vibration of the compensator cam is prevented from being transmitted to the support, and the compensator cam is vibrated by the vibration generator provided in the compensator cam. As a result, the warp becomes easy to move in the weft width direction due to the vibration of the compensator cam itself.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a triaxial weaving loom 1 with some parts omitted. In this triaxial weaving loom 1, 3 is a machine frame fixedly installed, which is constructed by assembling a support column 4, an upper frame 5, and a lower frame 6. An end of an intermediate frame 7 is fixed to an intermediate portion of the height of each of the columns 4, and a plurality of support arms 8 are fixed to the intermediate frame 7. Bearing brackets 10 are fixed on the support arms 8 respectively. The horizontal support rollers 9 are provided on the bearing brackets 10 and are rotatable about the horizontal axis, and the horizontal support roller 9 is rotated about the vertical axis to rotate the annular support 16. The annular support 16 is horizontally rotatable around a suspension frame 28a described later by a roller (not shown) that restricts the movement in the radial direction. The annular support 16 is rotated in one direction at a predetermined speed by a known rotary drive mechanism (not shown). A support stand 17 is fixed to each of the annular supports 16 at positions where the circumference is equally divided into a plurality of circles (not shown in the present embodiment, 8). The support base 17 is composed of a pair of opposing support plates 18 established on the annular support 16 and a support frame 19 fixed to the upper end thereof, and bearings 20 for beam support are fixed to the support plates 18, respectively. I am doing it. The beam shaft 21a of the beam 21 is rotatably supported by the corresponding pair of bearings 20, and the beam 21 is arranged between the adjacent support plates 18. Beam axis 2
A chain wheel 22 is fixed to 1a.

Reference numeral 35 denotes a rotary shaft supported by a bearing (not shown) attached to each support plate 18, and each rotary shaft 3
The ends of 5 are connected to the ends of the adjacent rotary shafts 35 through universal joints, and a chain wheel 38 is fixed to each rotary shaft 35 at a position corresponding to the chain wheel 22 of the beam 21. The chain 38b is wound around the chain wheel 22 and a tension chain wheel 38a attached to a bracket (not shown) and is rotated by a beam rotation motor (not shown). Reference numeral 90 denotes a well-known dropper device, and the annular support 16, the beam 21 provided thereon, its rotating mechanism, the dropper device 90, and the like constitute a warp supply unit 2 for supplying warp yarns to a weaving unit described later. There is.

Next, 23 is an annular thread guide ring fixed to the support frame 19 via a bracket (not shown) and is arranged concentrically with the axis of the support base 17. A guide reed (not shown) is fixed to the yarn guide ring 23 via a bracket (not shown) so as to guide each warp yarn a fed from each beam 21. Reference numeral 25 is a known triaxial weaving mechanism (weaving section), which is provided with a large number of two rows of heddles 25a arranged as rows in the weft insertion direction, and each of the two rows of heddles 25a guides the warp a to form a shed. Then, each time the wefts are inserted and the wefts are inserted sideways, the respective heddles 25a are alternately moved row by row in the same direction as the rotation direction of the support stand 17, and the heddle 25a at the end is moved to the other row. I am doing it. Reference numeral 26 is a known take-up roller rotatably supported by a frame (not shown) of the triaxial weaving mechanism 25. The take-up woven fabric b is wound by being rotated in the arrow direction by a drive mechanism (not shown). I am doing it.

In the triaxial weaving loom 1 as described above, a warp guide device 30 is arranged between the warp supply section 2 and the triaxial weaving mechanism 25. The warp guide device 30 includes a horizontal frame 2 which is integrated with the upper frame 5.
Support 2 composed of a suspension frame 28a suspended from 7 and a trapezoidal support bracket 28b fixed to the lower end thereof
Attached to 8. As shown in FIG. 3, the warp guide device 30
Is provided with a compensator cam 32 and a movable yarn guide device 31, and the compensator cam 32 is a support bracket 28b.
Is attached to the upper surfaces of a pair of anti-vibration members (anti-vibration rubber) 29, 29 that are attached to the upper surface 28c of the. The compensator cam 32 has a guide surface 32a formed on the outer periphery thereof so as to guide each warp yarn a drawn from each beam 21 and guided to the triaxial weaving mechanism 25 so that its length does not substantially change. .. On both upper surfaces of both ends of the compensator cam 32, a pair of vibrating devices 40, 40 for vibrating the compensator cam 32 and facilitating movement of the warp yarns a in the weft width direction are attached. Support bracket 28b
Sprockets 34 are rotatably supported on the left and right sides of the lower upper surface 28a of each of the sprocket 34, and a large number of thread guides 31a are connected to a chain 35 wound around these sprockets 34. It is guided to the triaxial weaving mechanism 25 through it. Sprocket 3
One of the four yarns 4 is rotated by a drive motor (not shown), and constitutes a movable yarn guide device 31 for rotating the warp yarn a in the weft width direction in synchronization with the movement of the heddle 25a of the triaxial weaving mechanism 25.

In the vibration oscillating device 40, as shown in FIGS. 4 and 5, a coil 43 is fixed to the upper surface of a mounting frame 41, while a movable core 44 is movably moved up and down with respect to the mounting frame 41 via a leaf spring 42. This is a device that is supported and generates a slight vibration by a magnet that vibrates the movable core 44 by the magnetic force of the coil 43. Therefore, when the warp yarn a slides in pressure contact with the guide surface 32a of the compensator cam 32, this vibration causes the warp yarn a to be momentarily separated from the guide surface 32a to release the over-tensioned yarn which is obstructed by an oil agent or the like, and thus the warp yarn a in the width direction. Easy to move. The vibration isolator 29 may have a structure for preventing vibration by using a spring, liquid, air or the like.

Next, when the operation of the triaxial weaving loom 1 is started in the above state, the heddle 25a of the triaxial weaving mechanism 25 guides the warp a to open the shed and simultaneously inserts the weft into the woven fabric b. Each time wefting is performed, the heddles 25a on both sides alternately move laterally in the direction of the arrow in FIG. 2 to rotate the warp in one direction. Further, the yarn guide 31a of the movable yarn guide device 31 and the annular support 16 synchronously rotate in the rotation direction of the heddle 25a, and rotate the warp yarns a drawn from each beam 21 in the same direction. When the winding roller 26 winds the woven fabric b and pulls the warp yarn a drawn from each beam 21, the warp yarn a moves in the woven fabric direction while being pressed against the guide surface 32a of the compensator cam 32 by the warp tension. .. At this time, the compensator cam 32 vibrates due to the vibration of the vibration oscillating device 40 operating at the start of the operation. As a result, the pressure contact portion between the warp yarn a and the guide surface 32a of the compensator cam 32 vibrates and the movement in the weaving direction becomes smooth without being obstructed by an oil agent or the like. When weaving in such a state, the warp yarn a moves in the width direction. Since the warp yarns are correctly performed, it is possible to prevent the warp movement and prevent the uneven weaving caused by the over tension of the warp yarns.

[0012]

As described above, according to the present invention, the compensator cam is mounted on the support suspended from the machine frame through the vibration isolating member, and the compensator cam is provided with the vibration generator to vibrate the compensator cam. Since the warp threads pressed against each other move smoothly in the width direction, the movement of the warp threads is performed smoothly, and weaving unevenness of the woven cloth caused by overtension can be prevented and the quality of the woven cloth can be improved. ..

[Brief description of drawings]

FIG. 1 is an explanatory diagram in which a warp guide device for a loom of the present invention is mounted on a triaxial weaving loom.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an explanatory diagram of a warp guide device when FIG. 2 is viewed from the III direction.

FIG. 4 is a sectional view of a vibrating device.

5 is a sectional view taken along line VV of FIG.

[Explanation of symbols]

1 triaxial weaving machine, 2 warp supply section, 3 machine frame, 2
5 Triaxial weaving mechanism (weaving section), 27 horizontal frame, 28
Support, 28a suspension frame, 28b support bracket,
29 anti-vibration member, 30 warp guide device, 32 compensator cam, 40 vibrating device, a warp

Claims (1)

[Claims] 1. A warp thread is slid between a weaving section that interweaves a large number of warp threads with respect to the weft thread and a warp supply section that is horizontally rotated above the weaving section as the warp thread of the weaving section moves. In a warp guide device of a loom for weaving a triaxial woven fabric or the like provided with a compensator cam for dynamically guiding the warp length between the warp supply part and the weaving part, a support suspended from a machine frame. A warp guide device for a loom, in which a compensator cam is attached to a vehicle through a vibration-proof member, and a vibrating device that applies vibration to the compensator cam is provided.