JPH0313347B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention has a reinforcing weft thread in the form of a weft thread, a reinforcing warp thread in the form of a warp thread or a diagonal thread, and a binding thread oriented approximately in the warp direction. The present invention relates to a method for producing textile fabrics and an apparatus for producing the same.

(Prior Art and Problems to be Solved by the Invention) A knitted fabric with reinforcing yarns is a knitted fabric with reinforcing yarns in which reinforcing yarns in the form of weft, warp, or diagonal yarns are held in the form of a knitted fabric by binding yarns. It is well known. (DE−
OS3304345). This type of knitted fabric can be produced on a conventional warp knitting machine equipped with a reinforcing yarn delivery means. Such a knitted fabric has an advantage over a fabric made of reinforcing yarns in that the reinforcing yarns are arranged straight without bending here and there. This improves the strength in the direction of yarn elongation and also allows the use of hard-to-bend reinforcing materials such as glass fibers or carbon fibers. By using one weft yarn group, one warp yarn group, and two intersecting diagonal yarn groups, a knitted fabric with high strength in all directions can be obtained. If such a knitted fabric is coated with a resin, it can be used as a canvas fabric or as a laminate for manufacturing resin molded products with high strength.

Furthermore, it is known that the warp threads of the first group are individually wound onto bobbins, and the warp threads of the second group reciprocate through the bobbins to create a textile structure (DE −
OS2043956). Into the open gap thus formed the weft thread is inserted transversely in the longitudinal direction of the weft thread by means of two inserting devices which operate alternately. This results in a very loose braided fabric. This is because the warp threads must be spaced from each other by a distance corresponding to the individual bobbins. This problem becomes more obvious as the thread becomes thicker.

Furthermore, machines for the production of triaxial fabrics are known (DE-OS 2319822) in which the diagonal threads are fed in as warp threads and the weft threads are inserted in their longitudinal direction and then driven into the fabric edges. In this case, all the threads in the finished fabric are wavy.

The object of the invention is to propose a method and a device thereof, as mentioned at the outset, with which it is possible to produce textile fabrics in which groups of reinforcing threads are each in one plane, making it possible to increase the amount of inserted weft material. It is in.

(Means, actions, and effects for solving the problem) This problem is solved by the present invention as follows. That is, the binding yarn fed into one side of the warp is carried alternately to one side and then to the other side as the warp group enters.
The first step is to form a closed gap between the open gap and the warp yarn, and the weft yarns are inserted into the respective formed gaps and driven into the edge of the fabric.

In this process, the binding thread is guided alternately around one weft thread of one weft group and around one weft thread of the other weft thread group. Between the weft threads there is at least one warp thread group, which can be supplemented by one such warp thread group or by other warp thread groups. The warp yarns can be warp yarns or diagonal yarns, which can provide great strength in all directions. Since each weft thread is driven into the edge of the fabric, a very high weft density is obtained.
The result is a woven fabric with greater strength in the weft direction. Greater strength in other directions can be obtained by introducing a sufficient amount of warp or diagonal threads.

It is particularly effective if the weft thread is inserted into the closed gap in the weft direction and into the open gap in the weft direction and across the warp direction. Therefore,
The weft yarn is inserted into one gap using the conventional method of a power loom, and into the other gap using the conventional method of a warp knitting machine. A high operating speed is obtained since only the second weft thread (the weft thread inserted into the closed gap) has to be inserted with a gripper, projector, etc.

In particular, as is the case in warp knitting machines, the weft threads to be inserted into the open gap may be magazined beforehand.

If groups of interlacing warp threads are used, each binding thread must be able to move back and forth within the gaps formed between the warp threads. If the binding thread passes through the warp threads, there is practically no resistance to overcome.

Furthermore, the binding threads can be offset by at least one pitch of warp threads in the position where they (warp thread groups) form an open gap. This improves the binding effect of the binding yarn depending on the type and direction of the warp.

The manufacturing apparatus according to the present invention is a manufacturing apparatus for woven fabric according to the method of the invention, which comprises a yarn guide mechanism for feeding reinforcing warp yarns, a guide bar equipped with a guide needle for guiding binding yarns, and a weft yarn insertion mechanism. A textile manufacturing apparatus, comprising means for and a weaving area disposed in front of a fabric winding device, having the following characteristics: that is, the guide needle is capable of reciprocating movement through at least one plane of at least one group of warp yarns defined by the yarn guide and the weaving area; magazine weft insertion on the side of the guide bar; a device is provided, and opposite to said one side an insertion device is provided for drawing the weft yarn in the longitudinal direction of said weft yarn, and a drive-in plate for the weft yarn is located between the yarn guide and the insertion point. It is movable within a plane from the position to the weaving area.

Therefore, this device has a completely simple structure, and existing devices and elements can be used for most of the structural parts. To suit this purpose, a beam for the binding yarn is provided on the same side as the magazine weft insertion device and is offset in the winding direction. This results in a space-saving structure and increases the storage capacity of the binding thread.

By arranging the warp beam for the warp yarns on the opposite side of the magazine weft insertion device, a space-saving structure and a large storage capacity for the warp yarns also become possible.

In particular, the fabric storage device may be arranged on the same side as the plane of the warp beam for the warp threads, but offset, which furthermore contributes to giving the device a compact construction.

A preferred embodiment is to arrange the diagonal thread delivery device approximately in the center and take care to feed the diagonal thread generally towards that plane. As a result, the diagonal threads are fed almost straight and arranged neatly. If the binding yarn beam, the warp beam, the magazine weft insertion device, and the fabric storage device are arranged in this way, the central area becomes empty, so a diagonal yarn delivery device is added there. It becomes possible to arrange.

It is advantageous for the diagonal thread delivery device to have a rotatable thread winding shaft with individual bobbins for the diagonal thread, as well as a thread guiding mechanism that moves transversely to the winding direction in its plane. The flow of the diagonal yarns is caused by each yarn being fed by a moving body that traverses the winding direction.

In order to hold the two intersecting groups of diagonal threads, it is desirable to provide two counter-rotating spool shafts as well as two counter-moving thread guiding mechanisms.

A yarn comb provided in a rotating (rotating) conveying means is preferably disposed in the yarn guiding mechanism of the diagonal yarn sending device. These thread combs automatically enter the thread bundle fed out by the thread winding rack and guide the thread in the transverse direction.

A particular advantage can be mentioned that the guide needles are arranged close to the thread guiding mechanism for the warp threads. Thereby, the warp threads are guided reliably, so that it is reliably ensured that the guide needles can pass through the gaps between the warp threads.

(Examples) The present invention will be described in detail below with reference to suitable embodiments shown in the drawings.

FIG. 1 is a diagram showing the operating range of the device of the present invention with the gap open, FIG. 2 is a diagram showing the same operating range as in FIG. 1 with the gap closed, and FIG.
The figure is a schematic sectional view showing the second embodiment, FIG. 4 is a simplified perspective view showing the device of FIG. 3, and FIG. 5 is a diagram showing the operating area in the open gap state of FIG. 3. ,
Fig. 6 is a diagram showing the operating area in the closed gap state of Fig. 5, Fig. 7 is a plan view of the diagonal thread guiding mechanism seen from above, and Fig. 8 is a diagram showing the operating area in the state of the closed gap shown in Fig. 5. Figure 9 shows the flow of the diagonal yarn at the start of the cycle, Figure 9 shows the flow of the diagonal yarn when the guide needle enters the yarn group, and Figure 10 shows the flow of the diagonal yarn after the weft has been driven into the edge of the fabric. FIG. 3 is a diagram showing the flow of diagonal threads.

In the device of FIGS. 1 and 2, the reinforcing warp threads, in the form of warp threads 1, are passed approximately perpendicularly from above through a thread guiding mechanism (thread guide) 2 with holed needles fixed to a bar 3. It is guided to the fabric edge 4, ie the fabric weaving area (also simply referred to as the weaving area). The fabric weaving area is arranged at a position before reaching the fabric winding device 5 (here, the winding device). Warp 1
forms one plane E between the yarn guiding mechanism 2 and the fabric edge 4.

The binding yarn 6 is guided to the fabric edge 4 via a direction changing roller 7 and a guide knurl 8 fixed to a guide bar 9. Guide needle 8 is indicated by arrow 10
, that is, from the position shown in FIG. 1 to the position shown in FIG. 2, and vice versa. In the terminal position shown in FIG. 1, the binding threads 6 form an open gap 11 with the warp threads 1, and in the terminal position shown in FIG.
form 2.

The magazine weft insertion device 13 comprises two longitudinal conveyors 14 whose width is slightly larger than the width of the group of warp threads 1. By these conveyors, the weft yarn 15 is
It is inserted into the open gap 11.

Opposite plane E, a weft thread insertion device 16 is provided, by means of which the weft thread 17 is inserted into the closed gap 12 in the longitudinal direction of the weft thread using known means such as grippers, projectors, etc. Rukoto can.

The other bar 18 has a driving plate 19 which reciprocates in the direction of the arrow 20. These comb sinkers move in the area of the plane E from the position between the insertion points of the weft threads 15, 17 (see FIG. 2) of the thread guiding mechanism 2 to the fabric edge 4, and in the process,
Each inserted weft thread is driven into the edge of the fabric,
As a result, a very dense weft weave is obtained. Overall, the fabric 21 is provided with relatively high strength in the longitudinal direction and very high strength in the transverse direction. The warp threads 1 and the weft threads 15 and 17 exhibit an almost straight configuration in the finished product.

In the embodiments shown in FIGS. 3 to 7, corresponding parts are represented using symbols added by 100 to the symbols shown in FIGS. 1 and 2. Machine 1
At 22, a warp beam 123 for the warp threads 101 is provided. Below this is a fabric storage device 124 for finished fabrics, and in front of this is a fabric winding device 105, here a winding roller device. Opposed to each other across the center plane are a magazine warp insertion device 113 and a beam 12 for the binding yarn 106 shifted in the winding direction.
5 is provided. The guide needle 108 is placed around the axis 126, and the driving plate 119 is placed around the axis 1.
27, it is possible to freely swing the desired movement. The two diagonal yarn groups 128 and 129 are fed into the weaving area by a feeding device 130. This delivery device comprises two counter-rotating bobbin shafts 131, 132, each of which supports an individual bobbin 133 or an individual beam. For the diagonal thread, the direction changing roller 13
4, 135 to guide mechanisms 136, 137 moving in the opposite direction, from where it enters the weaving area.

FIG. 4 shows the arrangement of each part in a perspective view. The weft insertion device 116 includes a gripper 138,
As a result, the weft 1 fed from the bobbin 139
17 is drawn through the closed gap. Furthermore, a wagon 140, shown schematically, guides the weft threads 115 to longitudinal conveyors 14 and 14a, respectively. This longitudinal conveyor is deflected at each end by a toothed wheel 141.

5 and 6 show the weaving area, however, the fabric storage device 124 still serves as a winding device. Warp 101, weft 11
5 and 117 and the interrelationship of the binding thread 106 corresponds to that of FIGS. 1 and 2. However, diagonal yarn 128 and diagonal 129 are added and fed into combs 142, 143 of yarn guiding mechanisms 136, 137 which act as yarn guides. Therefore, in addition to plane E of warp threads 101, planes E1 and E2 of groups of diagonal threads 128 and diagonal threads 129 occur.

As FIG. 7 shows, the thread guiding mechanism 136 and the thread guiding mechanism 137 include respective conveying chains 144, 145 that move in opposite directions over the diagonal threads, and these chains are arranged like toothed wheels 146, 147. It rotates on four toothed wheels. Each yarn comb 142, 143 is fixed to these conveyance chains. These thread combs automatically enter the diagonal threads 128, 129 in the middle part 148, and in the outer part 149,
At 150 it is removed from the diagonal thread.

The moving speed of the conveyance chain is as follows:
1 and 132 rotation speeds.

FIG. 8 shows the original position of the diagonal threads 128, 129, from which the diagonal threads are moved to the position of FIG. 9 by movement of the thread combs 142 and 143 in opposite directions. At that time, the thread combs 142, 14
A gap 151 remains near 3. The guide needle 108 passes through this gap. A driving plate 119 is also inserted at this location. That is, the guide needles and the driving plate are arranged at the same pitch as the warp yarns. When the weft yarn 117 is inserted, the driving plate 119 moves to the position shown in FIG. 10 and drives the weft yarn 117 into the fabric edge 104. Thus, again an initial situation similar to that of FIG. 8 occurs, allowing the process to be repeated.

The structure described above may be modified in various ways as long as the basic idea of the invention is not impaired. That is, the warp threads can be fed in groups of two or more. It is also permissible to change the positions of the warp beams and fabric storage devices.

The bar 109 is connected to an adjusting device 15, which is known in warp knitting machines, as shown schematically in FIG.
2 can be used to slide the warp yarns 101, 128, 129 by one pitch or by multiple pitches at the position where the bar forms the gap 111. In this way, it is possible to knit with a much smaller number of binding threads than the number of warp threads in each yarn group, or to achieve a very strong binding effect. Depending on the machine application, it may be possible to omit individual reinforcing warp threads.

It is also possible to omit the warp threads and braid only the weft threads with diagonal threads.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the operating range of the device of the present invention with the gap open, FIG. 2 is a diagram showing the same operating range as in FIG. 1 with the gap closed, and FIG.
The figure is a schematic sectional view showing the second embodiment, FIG. 4 is a simplified perspective view showing the device of FIG. 3, and FIG. 5 is a diagram showing the operating area in the open gap state of FIG. 3. ,
Fig. 6 is a diagram showing the operating area in the closed gap state of Fig. 5, Fig. 7 is a plan view of the diagonal thread guiding mechanism seen from above, and Fig. 8 is a diagram showing the operating area in the state of the closed gap shown in Fig. 5. Figure 9 shows the flow of the diagonal yarn at the start of the cycle, Figure 9 shows the flow of the diagonal yarn when the guide needle enters the yarn group, and Figure 10 shows the flow of the diagonal yarn after the weft has been driven into the edge of the fabric. FIG. 2 is a diagram showing the flow of diagonal threads. 1... Warp, 2... Thread guide (thread guiding mechanism), 4
...Fabric edge, 6... Binding thread, 8... Guide needle, 9... Guide bar, 11, 12... Gap, 1
3... Magazine weft insertion device, 16... Weft insertion device, 17... Weft, 24... Fabric winding device,
E... Surface, 19... Driving plate.

Claims (1)

[Scope of Claims] 1. A method for manufacturing a woven fabric having reinforcing weft threads in the form of weft threads, reinforcing warp threads in the form of warp threads or diagonal threads, and binding threads oriented substantially in the warp direction, wherein: The fed-in binding yarn is carried alternately to one side and the other side with respect to the entry of the warp yarn group, and as a result, the binding yarn alternately opens and closes gaps between the warp yarns. 1. A method for producing a woven fabric, which comprises: forming a gap between the woven fabric and the weft, and inserting the weft yarn into each of the formed gaps and driving the weft threads into the edge of the fabric. 2. The fabric according to claim 1, wherein in the manufacturing method, the weft threads are inserted in the weft direction into the closed gaps and in the weft direction into the open gaps. Fabric manufacturing method. 3. The method of manufacturing a woven fabric according to claim 2, wherein the weft yarns to be inserted into the open gaps are previously magazineized. 4. Claims 1 or 2, characterized in that, in the above manufacturing method, when a group of intersecting warp threads is used, each binding thread is moved in a gap formed between the warp threads. Alternatively, the method for producing a woven fabric according to item 3. 5. In the manufacturing method described above, the binding threads are offset by at least one pitch of the warp threads at the position where the binding threads form an open gap. A method for producing any of the woven fabrics described up to Section 1. 6. A manufacturing apparatus for a method of manufacturing a textile fabric having reinforcing weft threads in the form of weft threads, reinforcing warp threads in the form of warp threads or diagonal threads, and binding threads oriented approximately in the warp direction, the manufacturing apparatus comprising: A textile manufacturing device comprising a thread guiding mechanism for delivery, a guide bar with a guide needle for guiding the binding thread, means for inserting the weft thread, and a weaving area arranged in front of the fabric winding device. It has the following characteristics. Said guide needle 8, 108 is arranged in at least one plane E of at least one warp yarn group 1, 101, 128, 129, which is determined by the yarn guides 2, 102, 142, 143 and the weaving area 4, 104; A magazine weft insertion device 13, 113 is provided on the side of the guide bar 9, 109, and on the opposite side of the guide bar 9, 109, a magazine weft insertion device 13, 113 is provided to draw the weft in the longitudinal direction of the weft An insertion device 16, 116 is provided, and a driving plate 19, 119 for the weft yarn.
is provided so as to be movable within the range of the plane from one position existing between the yarn guide and the weft insertion point to the weaving area. 7. The textile manufacturing apparatus is characterized in that the beam 125 for the binding yarn 106 is provided on the same side as the weft insertion device 113 with respect to the surfaces E, E1, and E2, and is shifted in the winding direction. A textile manufacturing apparatus according to claim 6. 8. In the textile manufacturing apparatus, the warp beam 123 of the warp 101 passes through the surfaces E, E1, and E2,
The textile manufacturing apparatus according to claim 7, characterized in that the magazine weft insertion device 113 is provided on the opposite side. 9 In the textile manufacturing apparatus, the fabric storage device 1
9. The fabric manufacturing apparatus according to claim 8, wherein the thread beam 24 is disposed on the same side as the warp beam with respect to the planes E, E1, and E2, and is shifted in the winding direction. 10 In the textile manufacturing apparatus, a diagonal yarn feeding device 130 is provided approximately at the center, and a diagonal yarn 12
Apparatus for manufacturing textiles according to any one of claims 6 to 9, characterized in that the fabrics 8,129 are fed generally into planes E, E1, E2. 11. In the textile manufacturing apparatus, the diagonal thread delivery device 130 includes a rotatable thread winding shaft 131 with individual bobbins 133 for the diagonal threads 128, 129;
132, and a yarn guide mechanism 136, 137 adapted to move transversely to the winding direction in a plane formed by the yarn delivered therefrom. 10. The textile manufacturing apparatus according to any one of items 1 to 10. 12 In the textile manufacturing apparatus, two thread winding shaft racks 131, 132 that rotate in opposite directions, and two thread guide mechanisms 136 that move in opposite directions,
13. The textile manufacturing apparatus according to claim 11, further comprising: 137. 13. Claims characterized in that in the textile manufacturing apparatus, the yarn guide mechanisms 136, 137 of the diagonal yarn sending device 130 include yarn combs 142, 143 provided on rotating conveyance means 144, 145. The textile manufacturing apparatus according to item 11 or 12. 14 In the textile manufacturing apparatus, the guide needles 8, 108 are connected to the thread guide mechanisms 2, 102, 1 for warp threads.
36, 137. The textile manufacturing apparatus according to any one of claims 6 to 13, characterized in that it is installed near a textile manufacturing apparatus.