JPS6215366A - Method and apparatus for producing knitted fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is characterized in that the reinforcing weft threads are in the form of weft threads, the reinforcing warp threads are in the form of warp threads or diagonal threads, and the binding threads are oriented substantially 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) Shiso 14 with reinforcing threads, in which reinforcing threads in the form of wefts, warps, or diagonal threads are held in the form of a knitted fabric by binding threads.
H ground is well known (DE-053304345). This type of knitted fabric can be manufactured using a conventional warp knitting machine equipped with a reinforcing yarn feeding means. Such knitted fabrics have the advantage, compared to fabrics made of reinforcing yarns, 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 -052043956). Into the open gap formed in this case the weft thread is inserted transversely in the longitudinal direction of the weft thread by means of two inserting devices that operate alternately.

This results in a very loose braided fabric. This is because the warp threads must be spaced apart from each other by a distance corresponding to the individual bobbins. This problem has a thick thread (
In addition, there is a known machine for producing triaxial fabrics 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 edge of the fabric (DE- O32319822). In this case, all the threads in the finished fabric are wavy.

The problem of the present invention is that the reinforcing yarn groups are each on one surface,
The object of the present invention is to propose a method and a device as described at the outset, with which textile fabrics can be produced in which the amount of inserted weft material can be increased.

(Means, actions, and effects for solving the problem) This problem is solved by the present invention as follows. In other words, when the binding yarn fed into one side of the warp threads enters the warp thread group,
being carried alternately to one side and to the other, thereby forming alternating open and closed gaps with the warp threads, and the weft threads being carried alternately to one side and to the other, and the weft threads being carried alternately to one side and to the other, and the weft threads being carried alternately to one side and to the other, forming alternately open and closed gaps with the warp threads, and the weft threads being carried alternately to one side and to the other; It is inserted and driven into the edge of the fabric.

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

It is particularly effective if the weft threads are inserted into closed gaps in the weft direction and into open gaps in the weft direction and transversely to the warp direction. Therefore, the weft yarn is inserted into one gap using the conventional power w7 method, and into the other gap using the conventional warp knitting machine method. The second weft (the weft inserted into the closed gap) is held by a gripper and a projector.
etc., therefore a high operating speed can be obtained.

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 l pitches of warp threads in those positions 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 present manufacturing apparatus according to the present invention is a manufacturing apparatus for woven fabric according to the method of the invention, which comprises a guiding mechanism for feeding reinforcing warp yarns, a guide bar equipped with a guide needle for guiding binding yarns, and a weft yarn insertion 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 movable back and forth through at least one plane of at least one group of warp yarns defined by the yarn guide and the weaving area, and a magazine weft insertion device is provided on the side of the guide bar. and an insertion device for drawing the weft thread in the longitudinal direction of said weft thread is provided opposite said one surface, and a drive-in plate for the weft thread is provided from a position located between the thread guide and the insertion point. It is provided so that it can move within the range of the plane up 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 vacant, 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 guiding mechanism that moves transversely to the winding direction in its plane. The diagonal yarn flow is caused by the eight yarns being fed by a moving body transverse to 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 guide mechanisms.

A yarn comb provided in a rotating (rotating) conveying means is preferably disposed in the 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 guide system 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 area of the device of the present invention when the gap is open, and Fig. 2 is a diagram showing the operating area of the device of the present invention when the gap is closed.
Figure 3 is a schematic sectional view showing the second embodiment; Figure 4 is a simplified perspective view of the device in Figure 3; Figure 5 is an open view of the device in Figure 3. Figure 6 is a diagram showing the operating area in the closed gap state of Figure 5. Figure 7 is a plan view of the diagonal thread guiding mechanism from above. Figure 8 is a diagram showing the flow of the diagonal yarn at the start of the cycle in the device of Figure 3, Figure 9 is a diagram showing the flow of the diagonal yarn when the guide needle enters the yarn group, Figure 1O is a diagram showing the flow of diagonal yarns after the weft yarns are driven into the edge of the fabric.

In the apparatus of FIGS. 1 and 2, the reinforcing warp threads, in the form of warp threads 1, are passed almost vertically from above through a guiding mechanism (yarn 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 the fabric winding device 5 (
Here, it is arranged at a position before reaching the hoisting device).

The warp threads 1 form one plane E between the guiding mechanism 2 and the fabric edge 4.

The binding thread 6 is guided to the fabric edge 4 via a direction change roller 7 and a guide needle 8 fixed to a guide bar 9. The guide needle 8 is moved in the direction of the arrow 10, i.e. in the first direction.
It is driven back and forth from the position shown in the figure to the position shown in Figure 2 and vice versa. At the terminal position shown in FIG.
, and in the terminal position shown in Fig. 2, the gap 1 is closed.
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. The weft yarn 15 is inserted into the open gap 11 by these conveyors.

A weft insertion device 16 is provided on the opposite side of the surface E,
Thereby, the weft thread 17 can be inserted into the closed gap 12 in the longitudinal direction of the weft thread using, for example, known means such as a gripper, a projector, etc.

The other bar 18 has a driving plate 19 which reciprocates in the direction of the arrow 20. These comb sinkers connect the guiding mechanism 2 and the weft threads 15.1 in the area of the plane E.
7 (see Figure 2) and the edge of the fabric 4.
The weft threads inserted in each case are driven into the edges of the fabric, resulting in a very tight weave weave. 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 linear configuration in the finished product.

In the embodiments shown in FIGS. 3 to 7, for the warp 101, the zero machine 122 represents the corresponding parts using the symbols shown in FIGS. 1 and 2 plus 100. A warp beam 123 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. A magazine warp insertion device 113 and a beam 125 for the binding yarn 106 are provided on the opposite side across the center plane (opposed to each other) and are shifted in position in the winding direction. The guide needle 108 and the driving plate 119 can be pivoted about an axis 126 and about an axis 127, respectively, as desired. Two diagonal thread groups 128, 12
9 is fed into the weaving area by the feeding device 130. This delivery device comprises two counter-rotating spool shafts 131, 132, each of which supports an individual bobbin 133 or an individual beam. The diagonal threads are guided through deflection rollers 134, 135 to guide mechanisms 136, 137 moving in opposite directions and from there into the weaving area.

FIG. 4 shows the arrangement of each part in a perspective view. The weft insertion device 116 comprises a glyph bar 138, by means of which the weft thread 117 fed from the bobbin 139 is drawn through a closed gap. Furthermore, the wagon 140 shown schematically
The weft yarns 115 are guided respectively onto longitudinal conveyors 14 and 14a, which longitudinal conveyors are each deflected at their ends by toothed wheels 141.

5 and 6 show the weaving area, however, the fabric storage device 124 still serves as a winding device. The interrelationship of warp threads 101, weft threads 115 and 117 and binding threads 106 corresponds to that of FIGS. 1 and 2. However, the diagonal thread 128 and the diagonal thread 129
and a guiding mechanism 136. which acts as a thread guide.
137 combs 142 and 143. Therefore, in addition to plane E of warp threads 101, groups σ100 E1 and E2 of diagonal threads 128 and 129 are created.

As shown in FIG. 7, the guiding mechanism 136 and the guiding mechanism 1
37 comprises respective conveying chenles 144 , 145 moving in opposite directions on diagonal threads, which chenos are connected to the toothed wheel 14 .
It rotates on four toothed wheels such as 6 and 147. Each yarn comb 142, 143 is fixed to these conveying chenos. These thread combs automatically enter the diagonal threads 128, 129 in the middle part 148 and in the outer part 1
It deviates from the diagonal thread at 49 and 150.

The moving speed of the conveyor chain is as follows:
32 rotation speeds.

The original position of the diagonal threads 128, 129 is illustrated in FIG.
movement in the opposite direction moves it to the position shown in FIG. In this case, a gap 151 remains near the thread combs 142, 143. 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 plates 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 bars 109 are adjusted so that the warp threads 100 are adjusted in the position where the bars form the gap 111 using an adjusting device 152 known in warp knitting machines, as schematically shown in FIG.
It is possible to slide one pinch or multiple pitches of 1,128.129. In this way, it is possible to knit with a much smaller number of binding yarns than the number of warp yarns 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 area of the device of the present invention when the gap is open, and Fig. 2 is a diagram showing the operating area of the device of the present invention when the gap is closed.
Figure 3 is a schematic sectional view showing the second embodiment; Figure 4 is a simplified perspective view of the device in Figure 3; Figure 5 is an open view of the device in Figure 3. Figure 6 is a diagram showing the operating area in the closed gap state of Figure 5. Figure 7 is a plan view of the diagonal thread guiding mechanism from above. 8 is a diagram showing the flow of the diagonal yarn at the start of the cycle in the device of FIG. 3, FIG. 9 is a diagram showing the flow of the diagonal yarn when the guide needle enters the yarn group,
FIG. 10 is a diagram showing the flow of diagonal yarns after the weft yarns are driven into the edge of the fabric. 1... Warp, 2... Thread guide (guiding system mechanism), 4...
・Fabric edge, 6... Binding thread, 8... Guide needle,
9)...Guide bar, 11.12...Gap, 13.
...Magazine weft insertion device, 16...Weft insertion device,
17... Weft, 24... Fabric winding device, E...
Surface, 19... Drive-in plate.

Claims (14)

[Claims] (1) In a method for producing 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 approximately in the warp direction, the reinforcing threads are fed into one side of the warp threads. The binding threads are carried alternately on one side and the other side relative to the entry of the warp threads, so that the binding threads alternately form open and closed gaps with the warp threads. 1. A method for producing a woven fabric, characterized in that the weft yarns are inserted into the respective formed gaps and driven into the edge of the fabric. (2) In the above manufacturing method, the weft yarn is inserted across the closed gap in the weft direction and into the open gap in the weft direction.
A method for manufacturing the woven fabric described in Section 1. (3) The method for producing a woven fabric according to claim 2, wherein the weft threads to be inserted into the open gaps are magazined in advance. (4) In the above manufacturing method, when a group of intersecting warp threads is used, each of the binding threads is caused to move within a gap formed between the warp threads, as claimed in claim 1 or The method for producing a woven fabric according to item 2 or 3. (5) In the above manufacturing method, the binding yarn is shifted by at least one pitch of the warp yarn at the position where the binding yarn forms an open gap. A method for producing a woven fabric according to any one of items 4 to 4. (6) A manufacturing device for 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, comprising: A guiding mechanism for the delivery of the reinforcing warp threads, a guide bar with guide needles for guiding the binding threads, means for inserting the weft threads, and a weaving area is arranged in front of the fabric winding device. In the textile manufacturing device, said guide needle (8, 108) having the following characteristics, comprises at least one group of warp threads determined by the thread guide (2, 102, 142, 143) as well as the weaving area (4, 104). (1, 101, 128, 129) to be capable of reciprocating movement through at least one surface (E, E1, E2); and the magazine weft insertion device (13) on the side of the guide bar (9, 109). , 113), and opposite the face thereof an insertion device (
16, 116) are provided, and a weft driving plate (19, 119) is provided.
It is movable within the range of the plane from one position between the yarn guide and the weft insertion point to the weaving area. (7) In the textile manufacturing apparatus, a binding thread (106)
Claims characterized in that the beam (125) for use is provided on the same side as the weft insertion device (113) with respect to the planes (E, E1, E2) and offset in the winding direction. The textile manufacturing apparatus according to item 6. (8) In the textile manufacturing apparatus, the warp beam (123) of the warp (101) is provided opposite the magazine weft insertion device (113) via the surfaces (E, E1, E2). A textile manufacturing apparatus according to claim 7. (9) In the fabric manufacturing apparatus, the fabric storage device (1
10. The textile manufacturing apparatus according to claim 8, wherein the thread beam 24) is arranged on the same side as the warp beam with respect to the planes (E, E1, E2) and shifted in the winding direction. (10) In the textile manufacturing apparatus, a diagonal yarn feeding device (130) is provided approximately in the center, and a diagonal yarn (128)
, 129) are fed generally into the plane (E, E1, E2). (11) In the textile manufacturing apparatus, the diagonal yarn delivery device (130) is equipped with a rotatable thread winding rack (131,
132), and a guiding mechanism (136, 137) configured to move across the winding direction in a plane formed by the yarn sent out from there. The textile manufacturing apparatus according to any one of the ranges 6 to 10. (12) In the textile manufacturing apparatus, two thread winding shafts (131, 132) that rotate in opposite directions, and two guiding mechanisms (136, 137) that move in opposite directions.
Claim 1 characterized in that
The textile manufacturing apparatus according to item 1. (13) In the textile manufacturing apparatus, the guiding mechanism (136, 137) of the diagonal yarn sending device (130) connects the yarn comb (142, 143) provided on the rotating conveying means (144, 145). A textile manufacturing apparatus according to claim 11 or 12, characterized in that the apparatus comprises: (14) In the textile manufacturing apparatus, the guide needles (8, 108) are connected to the warp guiding mechanism (2, 102, 13).
6, 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.