Weft insertion method for weaving triplex plain weave fabric and triplex plain weave fabric

Abstract

The invention provides a weft insertion method for weaving a triplex plain weave fabric and the triplex plain weave fabric. The weft insertion method for weaving the triple plain weave fabric comprises the following steps that first weft yarn and second weft yarn are arranged in a first weft storage device, and third weft yarn is arranged in a second weft storage device; the triple plain weave fabric is woven, the double-weft throwing procedure and the single-weft throwing procedure are alternately carried out in the weaving process, the double-weft throwing procedure comprises the step of throwing the first weft yarn and the second weft yarn at the same time through the first weft storage device, and the single-weft throwing procedure comprises the step of throwing the third weft yarn through the second weft storage device. By means of the mode that only the two weft accumulators are adopted and the double-weft throwing procedure and the single-weft throwing procedure are alternately carried out, it can be guaranteed that the tension of two shutdown openings is more stable and consistent during weft stopping, and therefore the problem of tension difference existing in the prior art can be solved. Furthermore, the sparse and dense paths on the surface of the fabric are stably controlled, and the high yield is achieved.

Description

Technical Field

[0001] The present application relates to the field of textile technology, and in particular to a weft inserting method for weaving triple plain weave fabrics and triple plain weave fabrics. Background Art

[0002] In the process of weaving yarn into fabric, it is usually necessary to pull the weft yarn through the warp yarn to form the fabric structure. Air jet weft insertion is a common way to pull the weft yarn, which uses the main nozzle and auxiliary nozzle to spray air flow and generate friction on the weft yarn to achieve weft insertion. During weft insertion, the weft yarn and the air flow follow the reed groove, and the weft yarn flies at high speed in the pipeline with the air flow. One weft yarn is projected each time, and the weft yarn is repeatedly transmitted after completing one round according to the pattern card design.

[0003] The double plain weave is based on the plain weave and is obtained by extending the weave along the direction of the warp or weft yarn. For example, for triple plain weave, production is carried out according to the pattern card design. Usually, a single weft yarn is thrown in each time, and each throw is a cycle. However, when the weft stops due to the pattern card design, there are 6 openings, 2 of which are flat and 4 are open. The tension difference between the flat and open states is more than 30kg~100kg, which indirectly leads to a large tension difference in the fabric due to the stop, which in turn leads to sparse and dense roads on the surface of the fabric, and the fabric yield is reduced. Summary of the invention

[0004] Based on this, it is necessary to provide a weft insertion method for weaving triple plain weave fabrics to address the problems in the above-mentioned background technology. The weft insertion method can improve the tension problem faced by triple plain weave fabrics during the weaving process, thereby reducing the sparse and dense patterns on the surface of the fabric and improving the yield rate of the fabric.

[0005] The present application provides a weft inserting method for weaving a triple plain weave fabric, which comprises the following steps:

[0006] Arranging a first weft yarn and a second weft yarn in a first weft accumulator, and arranging a third weft yarn in a second weft accumulator;

[0007] When weaving the triple plain weave fabric, a double weft insertion process and a single weft insertion process are alternately performed during the weaving process. The double weft insertion process includes: simultaneously projecting the first weft yarn and the second weft yarn through the first weft accumulator, and the single weft insertion process includes: projecting the third weft yarn through the second weft accumulator.

[0008] In some embodiments of the present application, during the double weft insertion process, the first weft yarn and the second weft yarn are arranged on the same side of the same warp yarn.

[0009] In some embodiments of the present application, the triple plain weave fabric is organized as follows: The course is heavy and flat.

[0010] In some embodiments of the present application, in the process of weaving the triple plain weave fabric, the pattern of the card used is as shown in the figure:

[0011] ,

[0012] In the pattern plate pattern, one group of two alternate rows of pattern plates respectively correspond to the double weft inserting process, and another group of two alternate rows of pattern plates respectively correspond to the single weft inserting process.

[0013] In some embodiments of the present application, in the double weft insertion process, a tension controller is used to control the tension of the first weft yarn and the second weft yarn to be consistent.

[0014] In some embodiments of the present application, in the double weft insertion process, the first weft yarn and the second weft yarn are set in the same tension controller, and the tension controller is controlled to clamp the first weft yarn and the second weft yarn at the same time so that the tension of the first weft yarn and the second weft yarn is consistent.

[0015] In some embodiments of the present application, in the double weft insertion process, whether the first weft yarn and / or the second weft yarn is broken is detected in real time, and the machine is controlled to stop when the first weft yarn and / or the second weft yarn is detected to be broken.

[0016] In some embodiments of the present application, a weft breakage automatic stop device is used to detect in real time whether the first weft yarn and / or the second weft yarn is broken and control the machine to stop.

[0017] In some embodiments of the present application, in the process of projecting the first weft yarn and the second weft yarn, the first weft yarn and the second weft yarn are projected by jetting.

[0018] Furthermore, the present application also provides a triple plain weave fabric, which is prepared by the weft insertion method for weaving triple plain weave fabric as described in any of the above embodiments.

[0019] Triple plain weave fabric is a variation of plain weave. Compared with plain weave fabric, triple plain weave fabric is extended from one weave point to three weave points in the warp direction, which is a weave of warp heavy plain weave. In the traditional process of weaving triple plain weave fabric, weft insertion is usually carried out by inserting one weft at a time, and each three weft insertions constitute a cycle to complete the weft insertion action of triple plain weave. Figure 1 It is a traditional pattern plate used in weaving triple plain fabrics. Figure 1As shown, in the pattern plate, along the direction from bottom to top, the first row of pattern plates corresponds to the first weft, the second row of pattern plates corresponds to the second weft, the third row of pattern plates corresponds to the third weft, the fourth row of pattern plates corresponds to the fourth weft, the fifth row of pattern plates corresponds to the fifth weft, and the sixth row of pattern plates corresponds to the sixth weft. Three weft insertions constitute a cycle, and the main difference between the first to third wefts and the fourth to sixth wefts is only their position relative to the warp yarns. Although this weft insertion method is the conventional weft insertion method for weaving triple plain weaves in the industry, it will cause obvious tension differences in the woven fabric before and after the shutdown, affecting product quality.

[0020] In the weft insertion method for weaving triple plain weave fabrics of this embodiment, the first weft yarn and the second weft yarn are arranged in the first weft accumulator at the same time, and the first weft yarn and the second weft yarn are transmitted at the same time during weft insertion to complete the double weft insertion process, and then the third weft yarn is arranged in the second weft accumulator, and the third weft yarn is transmitted alone during weft insertion to complete the single weft insertion process. During the research process, the present application found that by using only two weft accumulators and alternating the double weft insertion process and the single weft insertion process, the tension of the two stop openings can be guaranteed to be more stable and consistent when the weft stops, thereby improving the tension difference problem existing in the traditional technology. Furthermore, the sparse and dense roads on the surface of the fabric are stably controlled, with a high yield rate.

[0021] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a traditional pattern plate used in weaving triple plain weave fabrics;

[0024] Figure 2 It is a structural schematic diagram of arranging the first weft yarn and the second weft yarn in the first weft accumulator at the same time, and arranging the third weft yarn in the second weft accumulator;

[0025] Figure 3 This is a pattern plate used in the process of weaving triple plain weave fabrics in the embodiment of the present application.

[0026] The reference numerals and their meanings are as follows:

[0027] 110, first weft yarn; 120, second weft yarn; 130, third weft yarn; 210, first yarn storage device; 220, second yarn storage device; 230, tension controller; 240, first weft break automatic stop device; 250, second weft break automatic stop device. DETAILED DESCRIPTION

[0028] To facilitate understanding of the present invention, a more comprehensive description of the present invention is provided below. The preferred embodiments of the present invention are given herein. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the content of the present invention more thorough and comprehensive.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this document pertains. The terms used herein in the specification of this document are only for describing specific embodiments and are not intended to limit this document.

[0030] It should be understood that when an element or layer is referred to as being "on, "adjacent to, "connected to, or "coupled to" another element or layer, it may be directly on, adjacent to, connected to, or coupled to the other element or layer, or there may be intervening elements or layers. In contrast, when an element is referred to as being "directly on, "directly adjacent to, "directly connected to, or "directly coupled to" another element or layer, there may be no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are merely used to distinguish one element, component, region, layer, or portion from another element, component, region, layer, or portion.

[0031] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein for ease of description to describe the relationship of one element or feature to other elements or features. It should be understood that the spatially relative terms are intended to also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "over" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be otherwise oriented (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used may be interpreted accordingly.

[0032] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application. When used herein, the singular forms "a", "an" and "the" are also intended to include plural forms, unless the context clearly indicates another way. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0033] Triple plain weave fabric is a variation of plain weave. Compared with plain weave fabric, triple plain weave fabric is extended from one weave point to three weave points in the warp direction, which is a weave of warp heavy plain weave. In the traditional process of weaving triple plain weave fabric, weft insertion is usually carried out by inserting one weft at a time, and each three weft insertions constitute a cycle to complete the weft insertion action of triple plain weave. Figure 1 It is a traditional pattern plate used in weaving triple plain fabrics. Figure 1 As shown, in the pattern plate, along the direction from bottom to top, the first row of pattern plates corresponds to the first weft, the second row of pattern plates corresponds to the second weft, the third row of pattern plates corresponds to the third weft, the fourth row of pattern plates corresponds to the fourth weft, the fifth row of pattern plates corresponds to the fifth weft, and the sixth row of pattern plates corresponds to the sixth weft. Three weft insertions constitute a cycle, and the main difference between the first to third wefts and the fourth to sixth wefts is only their position relative to the warp yarns. Although this weft insertion method is the conventional weft insertion method for weaving triple plain weaves in the industry, it will cause obvious tension differences in the woven fabric before and after the shutdown, affecting product quality.

[0034] The present application provides a weft inserting method for weaving a triple plain weave fabric, which comprises the following steps: arranging a first weft yarn and a second weft yarn in a first weft accumulator, and arranging a third weft yarn in a second weft accumulator. When weaving the triple plain weave fabric, a double weft inserting process and a single weft inserting process are alternately performed during the weaving process, the double weft inserting process comprises: simultaneously projecting the first weft yarn and the second weft yarn through the first weft accumulator, and the single weft inserting process comprises: projecting the third weft yarn through the second weft accumulator.

[0035] In the weft insertion method for weaving triple plain weave fabrics of the present application, the first weft yarn and the second weft yarn are arranged in the first weft accumulator at the same time, and the first weft yarn and the second weft yarn are transmitted at the same time during weft insertion to complete the double weft insertion process, and then the third weft yarn is arranged in the second weft accumulator, and the third weft yarn is transmitted alone during weft insertion to complete the single weft insertion process. During the research process, the present application found that by using only two weft accumulators and alternating between the double weft insertion process and the single weft insertion process, the tension of the two stop openings can be guaranteed to be more stable and consistent when the weft stops, thereby improving the tension difference problem existing in the traditional technology. Furthermore, the sparse and dense roads on the surface of the fabric are stably controlled, with a high yield rate.

[0036] Furthermore, compared with the traditional method of inserting one weft each time, the weft inserting method of the present application can reduce the difficulty of debugging the machine, save the time of debugging the machine, and is conducive to improving production efficiency. Since the weft inserting method only needs to insert the weft yarn twice in one cycle, the overall speed of the machine can be increased by 1 / 3, and the production capacity can also be increased by 1 / 3 accordingly.

[0037] In addition, the present application also tried to insert three wefts at the same time, but this method of inserting wefts will seriously affect the color of the fabric, and the weft yarn will twist during operation to produce a weft yarn crossing effect, which will degrade the sparse and dense paths and make the fabric quality relatively poor. Therefore, compared with the method of inserting three wefts at the same time, the method of inserting double wefts and single wefts alternately can improve the tension difference problem while ensuring the normal color of the fabric, and it is not easy to produce a weft yarn crossing effect, so the woven fabric has better quality.

[0038] A weft inserting method for weaving a triple plain weave fabric according to an embodiment of the present application includes steps S1 and S2, which are specifically as follows.

[0039] Step S1, arranging a first weft yarn and a second weft yarn in a first weft accumulator, and arranging a third weft yarn in a second weft accumulator.

[0040] Figure 2 Schematic diagram of the structure in which the first weft yarn 110 and the second weft yarn 120 are simultaneously arranged in the first weft accumulator, and the third weft yarn 130 is arranged in the second weft accumulator. Figure 2 As shown, the first weft yarn 110 and the second weft yarn 120 are simultaneously inserted into the first weft accumulator, and when weft is inserted, the first weft yarn 110 and the second weft yarn 120 can be simultaneously projected out. The third weft yarn 130 is inserted into the second weft accumulator, and when weft is inserted, the third weft yarn 130 can be projected out alone.

[0041] It can be understood that the weft storage device refers to the temporary storage device for the weft yarn unwound from the cheese yarn before it is introduced into the shed, which is used for rapier and projectile looms. It is usually composed of a motor, a yarn storage drum, a yarn winding disk, a yarn storage amount detector, a damping ring, a tensioner, a yarn arrangement mechanism, etc.

[0042] As an example of this embodiment, the first weft yarn 110 and the second weft yarn 120 are the same yarn. The first weft yarn 110 and the second weft yarn 120 are set to be the same yarn, so that the movement pace of the first weft yarn 110 and the second weft yarn 120 during the projection process can be as consistent as possible. Further, the first weft yarn 110, the second weft yarn 120 and the third weft yarn 130 are all the same yarn. In other examples, the third weft yarn 130 can also be different from the first weft yarn 110.

[0043] As a further example of this embodiment, the counts of the first weft yarn 110 and the second weft yarn 120 are less than 30S. The present application has been verified through experiments that the weft insertion method is particularly suitable for weft yarns with a count of less than 30S, and can better ensure the weft density of the fabric and the weft crossing effect of the fabric. In other examples, the counts of the first weft yarn 110 and the second weft yarn 120 can also be greater than 30S.

[0044] As an example of this embodiment, the triple plain weave fabric is organized as follows: Usually, the triple plain weave fabric is made as follows: Figure 1 The patterned card shown is woven.

[0045] As a further example of this embodiment, in the process of weaving a triple plain weave fabric, the pattern card pattern used is as follows: Figure 3 . Combined Figure 3 As shown, in the pattern plate pattern, one set of two alternate rows of pattern plates corresponds to the double weft insertion process, and the other set of two alternate rows of pattern plates corresponds to the single weft insertion process. For example, in the order from bottom to top, the first row of pattern plates corresponds to the double weft insertion process, the second row of pattern plates corresponds to the single weft insertion process, the third row of pattern plates corresponds to the double weft insertion process, the fourth row of pattern plates corresponds to the single weft insertion process, and so on.

[0046] The card pattern corresponds to the weft insertion method in the present application. The card pattern corresponding to the weft insertion method can solve the problem of sparse and dense wefts and ripples caused by severe tension differences in the traditional technology, and can also solve the risk of yarn breakage caused by double weft insertion.

[0047] Step S2, weaving a triple plain weave fabric, alternately performing a double weft insertion process and a single weft insertion process during the manufacturing process.

[0048] In this embodiment, the double weft inserting process includes: simultaneously projecting the first weft yarn 110 and the second weft yarn 120 through the first weft accumulator.

[0049] As an example of this embodiment, during the double weft insertion process, the first weft yarn 110 and the second weft yarn 120 are disposed on the same side of the same warp yarn.

[0050] In this embodiment, the single weft inserting process includes: projecting the third weft yarn 130 through the second weft accumulator.

[0051] As a further example of this embodiment, during the adjacent double weft insertion and single weft insertion processes, the third weft yarn 130 can be arranged on the same side of the same warp yarn as the first weft yarn 110 and the second weft yarn 120, or can be arranged on different sides of the same warp yarn.

[0052] As an example of this embodiment, in the double weft insertion process, the tension controller 230 is used to control the tension of the first weft yarn 110 and the second weft yarn 120 to be consistent. By controlling the tension of the first weft yarn 110 and the second weft yarn 120 to be consistent, it is possible to ensure that the first weft yarn 110 and the second weft yarn 120 are uniformly stressed during the weft insertion process, thereby avoiding the possible deviation of the first weft yarn 110 and the second weft yarn 120 during the insertion process or the problem of a weft yarn being broken.

[0053] As a further example of this embodiment, refer to Figure 2 As shown, in the double weft insertion process, the first weft yarn 110 and the second weft yarn 120 are set in the same tension controller 230, and the tension controller 230 is controlled to clamp the first weft yarn 110 and the second weft yarn 120 at the same time, so that the tension of the first weft yarn 110 and the second weft yarn 120 is consistent. It can be understood that by setting the first weft yarn 110 and the second weft yarn 120 in the same tension controller 230 at the same time, the first weft yarn 110 and the second weft yarn 120 can always keep the same tension during the weft insertion process, avoiding the problem of tension difference.

[0054] As a further example of this embodiment, the tension controller 230 may be a tension sheet.

[0055] As a further example of this embodiment, the tension controller 230 may be disposed between the weft accumulator and the cloth fell.

[0056] As an example of this embodiment, in the single weft insertion process, the third weft yarn 130 may also be set in another tension controller 230. The tension controller 230 may clamp the third weft yarn 130.

[0057] As an example of this embodiment, in the double weft insertion process, whether the first weft yarn 110 and / or the second weft yarn 120 is broken is detected in real time, and the machine is controlled to stop when the first weft yarn 110 and / or the second weft yarn 120 is detected to be broken. By timely controlling the machine to stop when the yarn breakage problem occurs, the quality impact of the left yarn breakage can be effectively avoided, ensuring that the fabric has a relatively good quality.

[0058] As an example of this embodiment, a weft breakage automatic stop device can be used to detect in real time whether the first weft yarn 110 and / or the second weft yarn 120 is broken and control the machine to stop. Figure 2 As shown, the first weft yarn 110 is inserted into the first weft breakage automatic stop device 240, and the first weft breakage automatic stop device 240 is used to detect in real time whether the first weft yarn 110 has a yarn breakage problem, and immediately control the machine to stop when the first weft yarn 110 is detected to have a yarn breakage problem. The second weft yarn 120 is inserted into the second weft breakage automatic stop device 250. The second weft breakage automatic stop device 250 is used to detect in real time whether the second weft yarn 120 has a yarn breakage problem, and immediately control the machine to stop when the second weft yarn 120 is detected to have a yarn breakage problem.

[0059] It can be understood that the weft breakage automatic stop device is an important safety and quality control device on the loom, which can automatically stop the operation of the loom when the weft yarn breaks.

[0060] As a further example of this embodiment, the weft break automatic stop device can be selected from a photoelectric weft break automatic stop device, a mechanical weft break automatic stop device, a magnetic weft break automatic stop device or an electronic weft break automatic stop device.

[0061] As an example of this embodiment, refer to Figure 2 As shown, the first weft yarn 110 and the second weft yarn 120 are respectively passed through two independent weft breakage automatic stop devices. When any weft breakage automatic stop device detects yarn breakage, the machine can be controlled to stop.

[0062] As an example of this embodiment, in the single weft insertion process, a weft breakage automatic stop device can also be used to detect in real time whether the third weft yarn 130 has a yarn breakage problem, and immediately control the machine to stop when a yarn breakage problem is detected.

[0063] As an example of this embodiment, during the process of projecting the first weft yarn 110 and the second weft yarn 120, the first weft yarn 110 and the second weft yarn 120 are projected by jetting. The jetting method can realize the simultaneous projection of the first weft yarn 110 and the second weft yarn 120 without substantially changing the machine structure.

[0064] In addition, when the first weft yarn 110 and the second weft yarn 120 are simultaneously projected by jet, the actual amount of air used is less than the total amount of air used when the two weft yarns are projected separately, so the weft inserting method can also save the actual amount of air used in the textile process.

[0065] As an example of this embodiment, in the process of projecting the third weft yarn 130, the third weft yarn 130 is transmitted by jetting.

[0066] In step S2, the weft inserting method for weaving triple plain weave fabric of the present application can be completed by alternately performing the above-mentioned double weft inserting process and single weft inserting process, and the warp yarn can be arranged according to the specific weaving mode of the triple plain weave fabric. Further, in the process of performing the double weft inserting process and the single weft inserting process, a single double weft inserting process and the single weft inserting process are regarded as one cycle, and the cycles are repeated for multiple times to complete the weft inserting method.

[0067] The present application also provides a triple plain weave fabric, which is prepared by the weft insertion method for weaving triple plain weave fabric as described in any of the above embodiments.

[0068] As some examples of this embodiment, the triple plain weave fabric can be but is not limited to textiles such as cloth, clothing, socks, towels, etc.

[0069] Please note that the above embodiments are for illustrative purposes only and are not meant to be limiting of this document.

[0070] It should be understood that, unless otherwise specified herein, there is no strict order restriction for the execution of the steps, and the steps may be executed in other orders. Moreover, at least a portion of the steps in the preparation process may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but may be executed at different times, and the execution order of these sub-steps or stages is not necessarily sequential, but may be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0071] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0072] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A weft inserting method for weaving triple plain weave fabrics, characterized in that: The steps include: Arranging a first weft yarn and a second weft yarn in a first weft accumulator, and arranging a third weft yarn in a second weft accumulator; When weaving the triple plain weave fabric, a double weft insertion process and a single weft insertion process are alternately performed during the weaving process. The double weft insertion process includes: simultaneously projecting the first weft yarn and the second weft yarn through the first weft accumulator, and the single weft insertion process includes: projecting the third weft yarn through the second weft accumulator.

2. The weft inserting method for weaving triple plain weave fabric according to claim 1, characterized in that: During the double weft insertion process, the first weft yarn and the second weft yarn are arranged on the same side of the same warp yarn.

3. The weft inserting method for weaving triple plain weave fabric according to claim 2, characterized in that: The triple plain weave fabric is organized as follows: The course is heavy and flat.

4. The weft inserting method for weaving triple plain weave fabric according to claim 3, characterized in that: In the process of weaving the triple plain weave fabric, the pattern of the card used is as shown below: ， In the pattern plate pattern, one group of two alternate rows of pattern plates respectively correspond to the double weft inserting process, and another group of two alternate rows of pattern plates respectively correspond to the single weft inserting process.

5. The weft inserting method for weaving triple plain weave fabric according to any one of claims 1 to 4, characterized in that: In the double weft insertion process, a tension controller is used to control the tension of the first weft yarn and the second weft yarn to be consistent.

6. The weft inserting method for weaving triple plain weave fabric according to claim 5, characterized in that: In the double weft insertion process, the first weft yarn and the second weft yarn are placed in the same tension controller, and the tension controller is controlled to clamp the first weft yarn and the second weft yarn at the same time, so that the tension of the first weft yarn and the second weft yarn is consistent.

7. The weft inserting method for weaving triple plain weave fabric according to any one of claims 1 to 4 and 6, characterized in that: In the double weft insertion process, whether the first weft yarn and / or the second weft yarn are broken is detected in real time, and when the first weft yarn and / or the second weft yarn are detected to be broken, the machine is controlled to stop.

8. The weft inserting method for weaving triple plain weave fabric according to any one of claims 1 to 4 and 6, characterized in that: A weft breakage automatic stop device is used to detect in real time whether the first weft yarn and / or the second weft yarn is broken and control the machine to stop.

9. The weft inserting method for weaving triple plain weave fabric according to any one of claims 1 to 4 and 6, characterized in that: In the process of projecting the first weft yarn and the second weft yarn, the first weft yarn and the second weft yarn are projected by jetting.

10. A triple plain weave fabric, characterized in that: The triple plain weave fabric is prepared by the weft inserting method for weaving the triple plain weave fabric as described in any one of claims 1 to 9.

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