JPH08134747A - Upright type tetra-axial weaving machine - Google Patents

Abstract

PURPOSE: To realize the stabilized continuous weaving operation with overall production efficiency increased in a tetra-axial weaving machine. CONSTITUTION: This weaving machine has a three step structure where the warp feeder is arranged at the uppermost step, the oblique yarn feeder and sub-driving power source are at the middle step and the weft feeder and weaving unit and the main driving power source are at the lowermost step. The warp feeder comprises the warp beams 4 and the warp feeding unit 7, the oblique yarn feeder comprises a plurality of oblique yarn beams arranged in a circle 6, the oblique yarn feeding unit 7 and a swivel 3, and the weft feeding unit and weaving unit comprises the weft-feeding unit 8, the oblique yarn opener 9, the beater and the woven fabric winder 11, and the warp yarn guides and the oblique yarn guides are hung from the uppermost step down to the lowermost step. An elliptical oblique yarn guide ring 2 is set between the oblique yarn feeder and the oblique yarn swivel so that the yarn slides along the outer periphery of the guide, while individual yarn feeders are equipped with feed- tension adjuster and the abnormal, feed detector. The loom beating unit is arranged so that it opposes to the tetra-axial woven fabric nipped with the ring temples continuously mounted on both sides of a plurality of the rollers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weaving machine for a four-axis weaving machine, in order to establish stable weaving by continuous operation of the loom, convenience of maintenance, operation, feeding of warp or weft, and after beating. Regarding the improvement of the temple.

[0002]

2. Description of the Related Art Woven fabrics are plain weaves in which warp threads and weft threads intersect at right angles,
Twill weave and the like are common, and these woven fabrics have directionality in tensile strength and elongation on the woven surface. Since the tensile strength and elongation are preferably isotropic rather than directional, triaxial or tetraaxial woven fabrics have been developed in recent years. Triaxial woven fabrics are traditionally found in bamboo knitting "oblique knitting", and industrially they are triaxial looms (Japanese Patent Publication No. 59-36015 and Japanese Patent Publication No. 59-34812).
No.). These triaxial looms are vertical loom looms.

Although the four-axis woven fabric is found in the "8th knitting", which is a bamboo ajiro knitting in ancient times, a full-scale loom has not been developed until recently. Therefore, the present inventor
Regarding this four-axis weaving machine, firstly, "four-axis weaving machine and four-axis weaving machine", (JP-A-63-92751) "four-axis weaving machine" (JP-A-1-292140)
No.), `` Multi-spindle loom '' (JP-A-2-6649), `` Multi-spindle circular loom ''
(Japanese Patent Laid-Open No. 2-160947), `` Method for manufacturing tetraaxial woven fabric '' (Japanese Patent Publication No. 4-9
No. 218), and "a skew yarn transfer opening device for a four-axis loom" (JP-A-4
-91255) etc. are proposed. These looms have a structure of vertical type or horizontal type, or a combination of both types.

Taking a "four-axis weaving machine" (Japanese Patent Laid-Open No. 1-292140) as an example, an oblique thread creel for rotating an oblique thread beam in an annular shape, and an oblique thread sent from this oblique thread creel are forwarded. Diagonal thread,
A weaving machine equipped with a revolving traverse mechanism that divides into two sets of double-threads called double-threads and supplies reciprocating diagonal threads to a warp row that is hung down from approximately the center of the diagonal thread creel. In the "pitch transfer opening device of Japanese Patent Laid-Open No. 4-91255", there is newly provided a heddle mechanism for the patter which transfers and reverses the plaque reaching the end of the warp row.

[0005]

The more polyaxial the fabric, the more complex the loom. In the complicated four-axis loom, the complicated mechanism causes a failure, which lowers production efficiency and increases maintenance and operation costs. Also,
In order to weave a four-axis woven fabric with a high fiber density, it is necessary that the device is stably and speedily increased.
It was difficult because the operating rate of the loom as a whole decreased. Therefore, the present inventor decided to develop a loom that re-examines the four-axis loom that has been developed so far, realizes continuous and stable weaving, and improves production efficiency as a whole.

[0006]

As a result, what has been developed is a loom for weaving a four-axis woven fabric from a warp yarn, a weft yarn, and two diagonal yarns. Means, a sub-driving source, and a weft supplying weaving means in the lower layer and a main driving source are arranged in a three-layer structure.The upper layer warp supplying means comprises a warp beam and a warp supplying device, and the middle layer warp supplying means is formed in an annular shape. It is composed of a large number of oblique yarn beams or oblique yarn creels and an oblique yarn supplying device and their turning means, and the lower layer weft supplying and weaving means comprises a weft supplying device, an oblique yarn opening device, a beating device and a product winding device. In other words, it is a vertical four-axis weaving machine in which a warp guide and a weft guide extending from the upper layer to the lower layer are suspended from the upper layer to the lower layer. In this vertical four-axis weaving machine, an elliptical oblique thread guide ring for slidably contacting the oblique thread with the outer circumference may be provided between the oblique thread supply device and the oblique thread turning device.

In this warp type four-axis weaving machine, for example, in the warp supply means, a balance bar that swings in the direction for feeding the warp is arranged, and a feeding roller for hanging the warp is attached to the front side of the balance bar and a warp beam. The brake shoe attached to the brake drum is connected, and a feeding tension adjusting device with a weight attached to the rear side of the balance rod so that the mounting position can be changed, or a warp thread or a diagonal thread feeding a linear spring with a predetermined tension, It is advisable to provide a supply abnormality detecting device which is arranged so as to be in a biased state and in which an electric switch is arranged at a contact position of a linear spring which is restored or bent by cutting the warp or abnormal tension. These devices can also be applied to the oblique yarn feeding means.

On the other hand, in the beating device, the temples for feeding the four-axis fabric immediately after beating to the product winding device are ring temples continuously provided on both sides of the roller, and a plurality of these rollers form the four-axis fabric. It is good to arrange them linearly or in a staggered manner in a facing relationship.

[0009]

The warp type four-axis loom of the present invention has a three-layer structure corresponding to each of the warp, the weft, and the weft, so that not only maintenance work in each layer is easy, but also the beam or creel of each thread is replaced. The yarn splicing and preparation work can be performed easily and safely. Also, by dividing the drive source for the middle layer and the drive layer for the lower layer, and providing the auxiliary drive source for the former and the main drive source for the latter, it is possible to individually adjust the drive force transmission from the drive source of each layer to each device,
The adjustment becomes easy. For example, the gear ratio of the middle layer can be changed by electrical control in accordance with the change of the gear ratio of the lower layer (performed when changing the density of the weft thread).

The feeding tension adjusting device and the tension abnormality detecting device will be described by taking the warp as an example. The feeding tension adjusting device attaches to the rear a moment generated from the difference between the tension of the warp applied to the feeding roller axially attached to the front of the balance rod and the tension of the brake shoe applied to the brake drum of the warp beam also connected to the front. The tension of the warp payout is kept constant by balancing with the moment of the weight. This tension can be adjusted by changing the number of weights, the weight, or the mounting position. Also, regarding the diagonal thread guide ring, the distance from the diagonal thread supply device to the diagonal thread turning device is long as it is, and the short one is bent to be long,
The tension can be stabilized by making the distance equal for all the diagonal threads.

In the feeding tension adjusting device, when the tension increases, the moment of the difference between the tension and the pulling force of the brake shoe exceeds that of the weight, and the balance rod tilts in the direction of loosening the brake shoe. As a result, warp payout from the warp diagonal beam is increased and tension is reduced. Also,
When the tension decreases, the moment of the weight exceeds the difference between the tension and the pulling force of the brake shoe, and the balance rod tilts in the direction of tightening the brake shoe. As a result, warp payout from the warp beam is reduced and tension is increased.

In the supply abnormality detecting device, the linear spring, which is stable in a predetermined urging state by the warp fed out with a predetermined tension as described above, is restored with no load by cutting the warp, or the warp is restored. The abnormal tension causes an excessively small or excessive load to restore or bend, and the electric switch is turned on to detect the warp cutting or the abnormal tension, respectively. The electric switch may be a switch for performing some means such as a switch for stopping the entire loom, or a combination of both, in addition to a warning such as lighting of a lamp or an alarm.
The description of the feeding tension adjusting device and the tension abnormality detecting device for the warp yarn is omitted since it is the same for the oblique yarn.

The temple in the beating device pushes the four-axis woven fabric, specifically the oblique yarn, which is fed out after beating, in the width direction to make the height of the cloth fell constant. The four-axis fabric immediately after beating is
There is a problem in that the oblique yarns are deviated in the width direction due to the warp direction in the product feeding direction. A plurality of rollers provided with ring temples on both sides feed the four-axis fabric while sandwiching the four-axis fabric in an opposing relationship, thereby pushing out the oblique yarn near both sides of the four-axis fabric, which is markedly twisted, to spread the four-axis fabric. The rollers do not squeeze, and at the same time the rollers in contact with the comb teeth of the repulsion keep the height of the cloth fell, which is important especially for quadriaxial fabrics.

[0014]

Embodiments of the present invention will be described with reference to the drawings. 1 is a front view of a vertical four-axis loom 1 having a three-layer structure, FIG. 2 is a side view of the same, and FIG. 3 is a warp guide ring and a weft guide ring 2 of a weft guide of the same loom and a weft turning device 3 FIG. 4 is a side view showing the arrangement relationship, and FIG. 4 is A in FIG.
FIG. 5 is an enlarged side view of the part, and FIG. 5 is a plan view of the loom as viewed from the middle layer to the lower side. The four-axis weaving machine 1 of the present embodiment is for weaving the weft yarns horizontally from the lower layer while opening the oblique yarns sent out from the middle layer in a loop to the hanging warp yarns as the oblique yarn rows before and after the warp yarns.

In this embodiment, as shown in FIGS. 1 and 2, a pair of warp beams 4 serving as warp supplying means is provided at the center of the upper layer.
And a warp feeder 5, a set of 12 pairs of oblique yarn beams 6 and oblique yarn feeders, which are oblique yarn supplying means in the middle layer, are annularly arranged (see FIG. 5), and a weft yarn is a weft supplying and weaving means in the lower layer. A supply device 8, a diagonal yarn opening device 9, a beating device 10 and a product winding device 11 are arranged. The warp yarns and the individual oblique yarn feeding devices 5, 7 are provided with warp yarn or oblique yarn feeding tension adjusting devices 12, 13 and supply abnormality detecting devices 14, 15, respectively. Further, a sub-driving source 16 (see FIG. 5) for the turning means of the oblique yarn feeding means is provided in the middle layer, and a main driving source 17 for the weft feeding and weaving means is provided in the lower layer.
Furthermore, the middle layer has a deck 18 for maintenance, inspection and work.

As shown in FIG. 3, the guide frame 19 suspended from the upper layer has an oval-shaped oblique thread guide ring 2 (see FIG. 1 or 2) below the middle layer.
The oblique yarn turning device 3 is fixed to the lower part, and as shown in FIG. 4, a common guide 20 for guiding the warp yarn and the oblique yarn to the weft supply weaving means in the lower layer is attached at the lowermost end. The warp guide comprises a guide frame 19 and a common guide 20, and feeds the warp row to the weft supply weaving means along a vertical plane including the central axis of the loom.
The oblique thread guide is composed of an oblique thread guide ring 2, an oblique thread turning device 3 and a common guide 20. The oblique thread supplied from an annular shape centered on the central axis of the warp thread is the oblique thread row before and after the warp thread row. It is transformed into and sent to the weft supply and weaving means.

As shown in FIG. 5, the oblique thread guide ring 2 is an elliptical ring, and is deformed into an elliptical shape by slidably contacting an oblique thread supplied from an annular shape with the outer circumference.
When directly guiding the warp yarns to the parallel oblique yarn yarns, by making the distances from the oblique yarn feeder 7 to the oblique yarn swivel device 3 equal in each of the oblique yarns, the tensions of all the oblique yarns are almost the same. I am trying to become. The oblique thread swivel device 3 swivels the oblique thread in synchronism with the oblique layer supply means of the middle layer by an elliptical chain 21 flattened to be nearly parallel, and the opposite parallel regions are opposite to each other. It becomes a slant thread row that moves in the direction.

As shown in FIG. 4, the oblique thread shedding device 9 opens the oblique thread rows while moving them in opposite directions before and after the warp thread, and in synchronization with the opening of the oblique thread row, weft supply means. Weft yarns are sent from the weaving machine to weave a 4-axis woven fabric. The woven four-axis woven fabric is beaten by the beating device and then wound up by the product winding device 11 as a completed product. In this way, each device of each layer operates in conjunction with each other, but since the auxiliary drive source 16 and the main drive source 17 are separately arranged in the middle layer and the lower layer, when changing the density of each yarn, Adjustment of transmission of
There is an advantage that maintenance of the transmission mechanism can be performed independently and individually.

The feeding tension adjusting devices 12 and 13 and the supply abnormality detecting devices 14 and 15 in the warp or oblique yarn feeding devices 5 and 7 ensure continuous and stable operation of the loom 1. Hereinafter, the description will be given by taking the oblique thread as an example. FIG. 6 is a side view showing the respective devices 13 and 15 when the tension is increased, FIG. 7 is decreased, and when FIG. 8 is cut. Feeding tension adjusting device 1
As shown in FIG. 6, 3 indicates both sides of the diagonal beam 6 (see FIG. 5).
(Refer to), the balance rod 23 is axially attached to the strut 22 standing upright,
A feeding roller 25 is installed forward from the swing shaft 24, and equilibrium rods at both ends are provided.
A stay 26 is provided at 23 to connect a brake shoe 27, and a weight 28 is inserted behind the swing shaft 24. Supply abnormality detection device 15
Is applied to the feeding roller 25 through the insertion hole 30 at the tip of the linear spring 29 corresponding to each of the oblique threads reaching the feeding roller 25,
To the position that is restored or curved from the biased state by this diagonal thread,
Stop switches 31 for the entire loom 1 are arranged.

In the steady state, the moment in front of the balance rod is
(The difference between the tension of the diagonal thread and the pulling force of the brake shoe) and the rear moment (weight) are balanced. When the tension increases from the steady state, the forward moment increases and the balance rod tilts forward (clockwise in FIG. 6) as seen in FIG. As a result, the brake shoe 27 is loosened, and a larger amount of the oblique yarn is fed from the oblique yarn beam 6, so that the tension is gradually weakened and the steady state (two-dot chain line in FIG. 6) is restored. On the contrary, when the tension is reduced, as shown in FIG. 7, the front moment is reduced and the rearward (counterclockwise in FIG. 7) is tilted, the brake shoe 27 is tightened, and the diagonal thread from the diagonal thread beam 6 is removed. As a result of the feeding being suppressed, the tension gradually increases and the state returns to the steady state (two-dot chain line in FIG. 7).

When the oblique thread is cut, as shown in FIG. 8, the linear spring 29 jumps up and the stop switch 31 arranged at the restored position is turned on to stop the entire operation of the loom 1. ,
At the same time, report which diagonal thread has been cut. In this case, as in the case where the tension is extremely reduced, the feeding of the diagonal yarn from the diagonal yarn beam 6 is significantly suppressed, but the complete weaving cannot be performed due to the cutting of the diagonal yarn, so that the entire loom is stopped. is there. In the case of the abnormal tension of the oblique thread, the stop switch 31 arranged at the curved position of the linear spring 29 is turned on, and the entire loom is stopped as described above. The warp payout tension adjusting device 12,
The supply abnormality detecting device 14 also has a slightly different structure, but the operating principle thereof is the same as that described above, and will be omitted.

The temple in the beating device 10 has a function of keeping the weaving width of the woven four-axis woven fabric constant and forming a uniform woven surface. 9 is a side view of the beating device 10, and FIG. 10 is a front view thereof. When the tetraaxial woven fabric is wound up after weaving, the oblique yarns, especially the oblique yarns on both sides are squeezed toward the center of the weaving width, and the entire tetraaxial woven fabric tends to deform like a constriction. Beating device
As shown in FIGS. 9 and 10, 10 is a comb tooth 32 for beating.
Below, the rollers 34, 34 with the ring temple 33 provided on both sides,
34 are arranged in three stages alternately facing each other in a positional relationship, and the woven four-axis woven fabric is fed while being bent by the rollers 34, 34, 34, and wound by the product winding device 11. . The ring temple 33 applies outward pressure to the diagonal threads on both sides of the four-axis fabric,
Prevents squeezing of the oblique thread, and the top roller 34 is comb-teeth.
By making contact with 32, the cloth fell is kept constant.

The four-axis weaving machine of the present invention facilitates its operation and maintenance and improves the production efficiency as a whole. However, even if the feeding tension adjusting device, the tension abnormality detecting device, the temple, etc. are individually used. The respective effects described above can be exhibited, and the operating rate can be improved particularly in the operation of a loom having a complicated structure such as a four-axis woven fabric. These are the basic performances required of a loom when weaving a four-axis woven fabric with a high fiber density, which has been demanded in recent years, and it is possible to improve such an operating rate by turning it over. The more complicated mechanism can be operated stably and at high speed.

[0024]

The vertical four-axis loom according to the present invention has a three-layer structure corresponding to each yarn, thereby shortening the time required for maintenance, repair, etc., which requires the loom to be stopped. The operating rate of can be improved. This is a four-axis fabric,
In particular, it enables mass production of highly dense four-axis woven fabrics and has the effect of reducing production costs. In addition, the three-layer structure,
Since weaving preparation, weaving work, maintenance, and repair work are made simple and safe, the loom is easy to use.

The feeding tension adjusting device and the oblique thread guide ring are
A stable weaving machine operation is ensured by maintaining constant tensions of the warp threads and the weft threads, which are complicated for the weaving work, and the supply abnormality detection device detects defective products due to cutting of the warp threads or the weft threads and abnormal tension. Weaving prevention (cutting) and loom damage prevention (abnormal tension) can be detected and recovered early. In this way, continuous loom operation is achieved and fail-safe is realized.
In particular, in recent years, high-strength fibers have come to be used, and even if there is no abnormality in the fibers, the loom may be damaged.
Such fail-safe is important.

Further, the temples provided in the repulsion device avoid the squeezing in the width direction due to the oblique yarn of the four-axis woven fabric which becomes more remarkable as the density becomes higher, and at the same time, the height of the cloth fell becomes constant. By preventing the generation of products, it is possible to continuously produce high quality four-axis woven fabrics. As described above, the present invention, individually and in total, exerts an effect, in addition to mass production of high-density four-axis woven fabrics, in particular, due to fail-safe and the like, high tensile strength but weak folding tension inorganic fibers (carbon fiber, Weaving with glass fibers and metal fibers (piano wire, etc.) is also possible.

[Brief description of drawings]

FIG. 1 is a front view of a vertical four-axis loom having a three-layer structure shown in an embodiment.

FIG. 2 is a side view of the same.

FIG. 3 is a side view showing a warp guide and an oblique yarn guide in the same loom.

FIG. 4 is an enlarged side view of portion A in FIG.

FIG. 5 is a plan view of the loom when viewed from the middle to the lower side.

FIG. 6 is a side view showing the oblique yarn feeder when the tension of the oblique yarn to be fed is increased.

FIG. 7 is a side view showing the oblique thread feeding device when the tension of the oblique thread to be fed is reduced.

FIG. 8 is a side view showing the oblique thread feeding device when the oblique thread to be fed is cut.

FIG. 9 is a side view of the beating device.

FIG. 10 is a front view of the beating device.

[Explanation of symbols]

 1 Vertical four-axis weaving machine 2 Oblique yarn guide ring 3 Oblique yarn turning device 4 Warp beam 5 Warp feeder 6 Oblique yarn beam 7 Oblique yarn feeder 8 Weft feeder 9 Oblique yarn shedding device 10 Reeding device 11 Product winding device 12 Feeding tension adjusting device (warp) 13 Feeding tension adjusting device (oblique yarn) 14 Supply abnormality detection device (warp) 15 Supply abnormality detection device (oblique yarn) 16 Sub drive source (middle layer) 17 Main drive source (lower layer) 33 Ring Temple 34 Roller

Claims (5)

[Claims] 1. A weaving machine for weaving a four-axis woven fabric from a warp, a weft, and two diagonal yarns, wherein the upper layer is a warp yarn supplying means, the middle layer is a diagonal yarn supplying means and a sub-driving source, and the lower layer is a weft yarn supplying weave. The upper layer warp supplying means is composed of a warp beam and a warp supplying device, and the middle layer sloping yarn supplying means is composed of a large number of sloping yarn beams or oblique creels arranged annularly. The lower layer weft supplying and weaving means comprises a weft supplying device, a weft yarn opening device, a beating device and a product winding device, and the warp yarns from the upper layer to the lower layer weaving device. A vertical four-axis weaving machine in which the guides and the diagonal guides are suspended from the upper layer to the lower layer. 2. A weaving machine for weaving a four-axis woven fabric from a warp, a weft, and two oblique yarns, comprising a diagonal yarn supplying device and an oblique yarn rotating device, which are arranged vertically. A vertical four-axis weaving machine provided with an elliptical oblique thread guide ring that slidably contacts the oblique thread between the oblique thread supply device and the oblique thread turning device. 3. In the warp supplying means or the oblique thread supplying means, an equilibrium rod that swings in a direction in which the warp thread or the oblique thread is delivered is arranged, and a delivery roller for suspending the warp thread or the oblique thread is pivotally mounted in front of the balance rod. A warp or oblique yarn feeding tension adjusting device is provided which is connected with a brake shoe applied to a brake drum of a warp or oblique yarn beam, and a weight is attached to the rear side of the balance rod so that the attachment position can be changed. Vertical four-axis loom. 4. In the warp yarn supplying means or the sloping yarn supplying means, a linear spring is arranged so as to be in a predetermined urging state by the warp yarn or the sloping yarn fed with a predetermined tension, and the warp yarn or the sloping yarn is cut or abnormal. 2. The vertical four-axis weaving machine according to claim 1, further comprising a warp or slack yarn supply abnormality detecting device provided with an electric switch at a contact position of a linear spring that is restored or bent by tension. 5. In the beating device, the temple for feeding the four-axis fabric immediately after beating to the product winding device is a ring temple continuously provided on both sides of the roller, and the plurality of rollers form the four-axis fabric. The vertical four-axis weaving machine according to claim 1, wherein the four-axis weaving machines are arranged so as to face each other.