Large-pore, high-thickness, multi-layer twill-woven spaced braids and their twill-weaving devices and weaving methods

Abstract

This invention provides a high-thickness, multi-layered twill-woven spaced fabric with large pores, its twill weaving device, and weaving method. The device's opening mechanism is equipped with novel heddles containing multiple twill weave holes. These novel heddles include multi-layered lifting heddles capable of relative movement and multi-hole saddle heddles. During weaving, the device adjusts the movement path and the distance between the heddle eyes through the coordinated action of the lifting and saddle heddles, thereby adjusting the weave hole distance and ensuring successful weft insertion. This achieves integrated weaving of multi-layered twill-woven spaced fabrics. By increasing the number of layers in the middle layer of the fabric and using X-shaped warp threads to connect the layers, this invention meets the thickness requirements of the fabric, resulting in a high-thickness, multi-layered twill-woven fabric with a stable structure, uniform stress distribution, strong impact resistance, large pores, and minimal yarn slippage. The device of this invention has low modification costs, simple process, and high feasibility, enabling the industrial production of high-thickness, multi-layered twill-woven spaced fabrics and possessing significant commercial application value.

Description

Technical Field

[0001] This invention relates to the field of machine weaving technology, and in particular to a large-pore, high-thickness, multi-layer twill-woven fabric with spacing, its twill weaving device, and weaving method. Background Technology

[0002] Spacer fabrics are widely used in transportation, medical protection, and other fields due to their excellent breathability, cushioning, and air layer properties. Simultaneously, their high tensile and compressive strength makes them widely used in aerospace, automotive, shipbuilding, and wind power generation. The thicker the spacer fabric, the more air it can hold, resulting in better insulation. Traditional spacer fabrics are typically woven using a ground warp and a pile warp. The ground warp structure often uses a plain or twill weave, and the fabric thickness is adjusted by the height of the pile warp. However, this method can only produce spacer fabrics with a "sandwich" structure, with one layer of ground warp at the top and bottom and one layer of pile warp in the middle. Achieving high thickness with this type of spacer fabric presents three problems. First, because fibers are flexible materials, increasing the height of the pile warp often significantly reduces its support, causing the pile warp to bend within the spacer fabric. Second, because there is no interlacing structure within the spacer fabric, the upper and lower ground warps are prone to displacement, making it difficult to ensure structural stability. Third, the current pile warp mechanism has a limit on the length of a single pile feed, which is only 20mm. Therefore, the maximum thickness of the current spacer fabric is only about 20mm.

[0003] Traditional twill weaving equipment can only weave single-layer fabrics, making it difficult to weave multi-layer twill fabrics. To achieve integrated weaving of multi-layer twill fabrics, it is necessary to modify traditional equipment or develop new weaving equipment. Chinese Patent (Publication No. CN109881339A) provides a three-dimensional twill weaving machine and its twill weaving method. This equipment can achieve integrated weaving of multi-layer twill fabrics; however, the weaving method is equivalent to superimposing traditional heddles for weaving multi-layer twill fabrics, and cannot achieve interval weaving. Chinese Patent (Publication No. CN108532093B) provides a method for weaving interval fabrics with variable spacing. By setting the warp feed amount of the electronic warp feed system, height differences appear on the fabric surface, ultimately presenting a corresponding irregular curved surface effect. This method mainly changes the fabric thickness by varying the warp feed amount to create differences in warp height. However, this weaving method is only suitable for medium-thickness fabrics and cannot weave very thick fabrics.

[0004] In view of this, in order to increase the thickness of the spacer fabric, ensure the overall stability of the spacer fabric, and realize the integrated weaving of multi-layer twill spacer fabric, it is necessary to design an improved large-pore, high-thickness multi-layer twill spacer braid, its twill weaving device, and weaving method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a large-pore, high-thickness, multi-layer twill-woven interlocked braid, as well as its twill-weaving device and weaving method. By improving the heddle mechanism of the traditional twill-weaving device and combining it with the improved process, a large-pore, high-thickness, multi-layer twill-woven interlocked braid is obtained through twill weaving. This process is simple, highly feasible, and the resulting braid has the advantages of stable structure, impact resistance, high strength, compression resistance, bending resistance, and good self-supporting properties, making it highly valuable for application.

[0006] To achieve the above-mentioned objectives, this invention provides a weaving device for a large-pore, high-thickness, multi-layered twill-knitted fabric, comprising a frame, a braking mechanism, a warp feeding mechanism, a weft feeding mechanism, a weft insertion mechanism, an shedding mechanism, and a take-up mechanism. The shedding mechanism includes a novel heddle with n twill weave openings. The weft insertion mechanism includes a weft insertion rapier that cooperates with the n twill weave openings of the novel heddle. The novel heddle includes n layers of lifting heddles and saddle heddles. The saddle heddle has n holes, the same number of layers as the lifting heddle. The hooks on both sides of the lifting heddle are connected to the hooks on both sides of the saddle heddle via elastic components.

[0007] As a further improvement of the present invention, in the n twisted weaves of the novel heddle, n≥3; the number of rapiers of the weft insertion rapier is the same as the number of layers of the heddle lifting yarn.

[0008] As a further improvement of the present invention, the skein device further includes two multi-eye eccentric heddles, each of which has n-1 heddle eyes, controlling n-1 uniformly arranged pile warps.

[0009] As a further improvement of the present invention, the heald wire includes a first heald wire unit and a second heald wire unit that can move relative to each other; both the first heald wire unit and the second heald wire unit are connected to the riding heald wire through the hook.

[0010] As a further improvement of the present invention, the opening mechanism includes a plurality of novel heddles and two supports, the two supports being fixedly connected to the first heddle unit and the second heddle unit of the heddle lifting device, respectively.

[0011] The present invention also provides a method for weaving a high-porosity, thick, multi-layered twill-knitted fabric, comprising the following steps:

[0012] S1. The warp feeding mechanism provides the pile warp and the skein warp respectively, and the weft feeding mechanism provides the weft yarn and the reinforcing weft yarn respectively; the skein warp passes through the eyelets of the heddle wire and the saddle heddle wire of the new heddle, and the pile warp is controlled by the multi-eye eccentric heddle wire, and a single multi-eye eccentric heddle wire controls n-1 uniformly arranged pile warp.

[0013] S2. When the first heddle unit and the second heddle unit of the heddle-lifting yarn move relative to each other, the heddle-lifting yarn and the saddle heddle control the twisting to form n weaving points; the n weaving points correspond to n layers of fabric;

[0014] S3. The weft insertion rapiers enter the weaving opening, and the n rapiers respectively enter the n weaving openings of step S2, and feed the reinforcing weft yarn in, completing one weft insertion of the reinforcing weft yarn;

[0015] S4. The weft insertion rapier exits the weaving point, the first heddle unit and the second heddle unit remain stationary, and the two multi-eye eccentric heddles undergo relative lifting and lowering motion.

[0016] S5. The weft insertion rapier re-enters the weft opening and feeds in the weft yarn, completing the weft insertion of the weft yarn;

[0017] S6. The weft insertion rapier exits the weaving point, the first heddle unit and the second heddle unit remain stationary, and the two multi-eye eccentric heddles undergo lifting and lowering movements in the opposite direction to the movement of the two in step S4, thereby realizing the weaving of the X-shaped structure; and step S3 is repeated to complete the secondary weft insertion of the reinforcing weft yarn;

[0018] S7. After the weft rapier exits the weaving point, the first heddle unit and the second heddle unit undergo a lifting and lowering motion in the opposite direction to the motion in step S2, forming a new n weaving points, and repeating steps S3 to S7 until the large-pore, high-thickness, multi-layer twisted interlaced braided body is woven.

[0019] As a further improvement of the present invention, in step S3 or step S6, when the weft insertion of the weft insertion rapier is the reinforcing weft yarn, the movement distance of the saddle heddle is adjusted so that the reinforcing weft yarn contacts and interweaves with the bending point of the pile warp, fixing the pile warp and providing a support point for it to form an X-shaped structure.

[0020] The present invention also provides a high-porosity, thick, multi-layer twill-woven spaced braid, which includes an outer layer, several intermediate layers and a support layer; the support layer connects the outer layer and the intermediate layers, or connects the intermediate layers with each other, and the support layer forms an X-shaped structure between the outer layer and the intermediate layers, or between the intermediate layers.

[0021] As a further improvement of the present invention, both the outer layer and the middle layer include weft yarn, reinforcing weft yarn on both sides of the weft yarn, twisted warp and pile warp woven with the weft yarn or reinforcing weft yarn; the reinforcing weft yarn contacts and interweaves with the bending point of the pile warp, fixes the pile warp, and provides support points for the pile warp to form an X-shaped structure.

[0022] As a further improvement of the present invention, the support layer includes an X-shaped cross structure of the pile warp; by adjusting the length of the pile warp and the number of weft yarns crossing it, the angle and height of the triangle in the X-shaped structure can be adjusted.

[0023] As a further improvement of the present invention, the weft density of the weft yarn is 2-4 threads / cm, the warp density of the twill warp is 2-8 threads / cm, and the warp density of the pile warp is 2-8 threads / cm.

[0024] The beneficial effects of this invention are:

[0025] 1. This invention provides a large-pore, high-thickness, multi-layer twill-woven spaced braid, its twill weaving device, and weaving method. The twill weaving device's opening mechanism includes novel heddles with multiple twill weave openings. These novel heddles include multi-layered lifting heddles and saddle heddles capable of relative movement. The saddle heddles have multiple eyelets with the same number of layers as the lifting heddles. The hooks on both sides of the lifting heddles are connected to the hooks on both sides of the saddle heddles via elastic components. In this device, through the interaction of the lifting and saddle heddles, multiple weave openings with suitable angles are formed during the twill weaving process. The improved twill weaving process yields a large-pore, high-thickness, multi-layer twill-woven spaced braid. This invention improves the heddle mechanism of traditional twill weaving devices and combines it with an improved twill weaving process. This process is simple, highly feasible, and the resulting braid has advantages such as structural stability, impact resistance, high strength, compression resistance, bending resistance, and good self-support, making it highly valuable for application.

[0026] 2. This invention, by setting up multiple layers of heddles and including saddle heddles, allows for flexible adjustment of the distance between heddle eyes and, consequently, the distance of the weft insertion by coordinating the movement of these two elements during the process. Furthermore, the invention incorporates multi-eye eccentric heddles to control the movement of the pile warp, creating an X-shaped structure between the outer and middle layers, or between the middle layers themselves. This not only achieves the integrity of the fabric but also results in a composite material with numerous internal pores, high thickness, high strength, high air permeability, and high moisture permeability. Simultaneously, by increasing the number of middle layers and connecting them with the pile warp to form an X-shaped structure, this invention meets the thickness requirements of the knitted fabric, achieving overall fabric integrity and resulting in a structurally stable, uniformly stressed, impact-resistant, highly porous, and non-slippery multi-layered knitted fabric.

[0027] 3. The weaving device for the high-thickness, multi-layer twill spacer fabric of the present invention, by combining the improved device with the weaving process, overcomes the problem that the movement path of the pile warp is easily blocked due to the connection of multiple layers of structure in the twill process where multiple layers of twill and pile warp coaxial are present simultaneously, and realizes the integrated weaving of multi-layer twill spacer fabric; moreover, the device is a simple improvement on the original twill device with low modification cost, realizing the industrial mass production of high-thickness, multi-layer twill spacer fabric, and has good commercial application value. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the novel heddle structure of the twill weaving device for the large-pore, high-thickness, multi-layer twill weaving spacer of the present invention, wherein (a) is a disassembled diagram and (b) is an assembly diagram.

[0029] Figure 2 This is a schematic diagram of the twisting operation of the novel heddle yarn in the twisting device of the present invention.

[0030] Figure 3 This is a schematic diagram of the operation of the novel heddle wire and weft insertion rapier of the weaving device of the present invention.

[0031] Figure 4 This is a schematic diagram of the weaving method for the large-pore, high-thickness, multi-layer twisted interlaced braid of the present invention.

[0032] Figure 5 This is a schematic diagram of the structure of the large-pore, thick, multi-layered twisted woven fabric of the present invention.

[0033] Figure 6 for Figure 5 A schematic diagram of the outer layer structure of a high-porosity, thick, multi-layered twisted woven fabric.

[0034] Figure 7 for Figure 5 A schematic diagram of the intermediate layer structure of a high-porosity, thick, multi-layered twisted woven fabric.

[0035] Figure 8 for Figure 5 A simplified side view of a high-porosity, thick, multi-layered twisted woven fabric.

[0036] Figure 9 This is a simplified side view of the high-porosity, thick, multi-layered twisted woven structure of Example 2.

[0037] Figure 10 This is a simplified side view of the high-porosity, thick, multi-layered twisted woven fabric of Example 3.

[0038] Figure 11 This is a simplified side view of the high-porosity, thick, multi-layered twisted woven fabric of Example 4.

[0039] Figure 12 This is a simplified side view of the high-porosity, thick, multi-layered twisted woven structure of Example 5.

[0040] Figure 13 This is a schematic diagram of the structure of the high-porosity, thick, multi-layered twisted woven fabric of Example 6.

[0041] Figure 14 This is a simplified side view of the high-porosity, thick, multi-layered twisted woven structure of Example 7.

[0042] Figure label:

[0043] 100 - New type of heddle yarn; 110 - Heddle yarn with raised heddle; 111 - First heddle yarn unit; 112 - Second heddle yarn unit; 120 - Saddle heddle yarn; 130 - Hook ear; 200 - Large-pore, high-thickness, multi-layer twill weave; 210 - Outer layer; 211 - Weft yarn; 212 - Reinforcing weft yarn; 213 - Twill warp; 214 - Pile warp; 220 - Middle layer; 230 - Support layer; 300 - Weft rapier; 400 - Support; 500 - Multi-eye eccentric heddle yarn. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0046] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Please see Figures 1-2As shown, a weaving device for a large-pore, high-thickness, multi-layer twill-knitted spacer includes a frame, a braking mechanism, a warp feeding mechanism, a weft feeding mechanism, a weft insertion mechanism, a shedding mechanism, and a take-up mechanism. The shedding mechanism includes a novel heddle 100 with n twill weave openings, and the weft insertion mechanism includes a weft insertion rapier 300 that cooperates with the n twill weave openings of the novel heddle 100. The novel heddle 100 includes n layers of lifting heddle 110 and saddle heddle 120. The saddle heddle 120 has n eyelets, the same number as the lifting heddle 110. The hooks 130 on both sides of the lifting heddle 110 are connected to the hooks 130 on both sides of the saddle heddle 120 via elastic components. In this device, through the cooperation of the lifting heddle 110 and the saddle heddle 120, multiple weave openings with suitable angles are formed during the twill weaving process, and a large-pore, high-thickness, multi-layer twill-knitted spacer 200 is obtained through the improved twill weaving process. This invention improves the heddle mechanism of traditional twill weaving devices and combines it with an improved twill weaving process. This process is simple, highly feasible, and the resulting woven body has the advantages of stable structure, impact resistance, high strength, compression resistance, bending resistance, and good self-support, making it highly valuable for application.

[0048] Specifically, in the n skein weaves of the new heddle 100, n ≥ 3; the number of weft rapiers 300 is the same as the number of layers of the heddle 110. The heddle 110 includes a first heddle unit 111 and a second heddle unit 112 capable of relative movement; both the first heddle unit 111 and the second heddle unit 112 are connected to the saddle heddle 120 via hooks 130. The skein weaving device also includes two multi-eye eccentric heddles 500, each multi-eye eccentric heddle 500 having n-1 heddle eyes, controlling n-1 evenly arranged pile warps 214.

[0049] This invention employs a multi-layered heddle wire 110 and a saddle heddle wire 120. The first heddle wire unit 111 and the second heddle wire unit 112 of the heddle wire 110 continuously undergo relative lifting and lowering motion, cooperating with the saddle heddle wire 120 to control the twisted warp 213 to form the weave stop. Through the coordinated operation of both in the process, the distance between the heddle wire eyes can be flexibly adjusted by adjusting the movement path, thereby adjusting the distance of the twisted weave stop and ensuring successful weft insertion. Furthermore, this invention also includes a multi-eye eccentric heddle wire 500 to control the movement of the pile warp 214, causing the pile warp 214 to form an X-shaped structure between the outer layer 210 and the middle layer 220, or between the middle layers 220. This not only achieves the integrity of the fabric but also creates a composite material with numerous internal pores, high thickness, high strength, high air permeability, and high moisture permeability.

[0050] In some specific embodiments, the material of the novel heddle wire 100 can be nylon or stainless steel.

[0051] The twill weaving device for the high-thickness, multi-layer twill spacer fabric of the present invention, by combining the improved device with the weaving process, overcomes the problem that the movement path of the pile warp is easily blocked due to the connection of multiple layers of structure in the twill weaving process where multiple layers of twill and pile warp are present at the same time, and realizes the integrated weaving of multi-layer twill spacer fabric; moreover, the device is a simple improvement on the original twill weaving device with low modification cost, realizes the industrial mass production of high-thickness, multi-layer twill spacer fabric, and has good commercial application value.

[0052] Please see Figure 3 As shown, in some specific embodiments, the opening mechanism includes multiple new heddle wires 100 and two supports 400. The two supports 400 are respectively fixedly connected to the first heddle wire unit 111 and the second heddle wire unit 112 of the lifting heddle wire 110. During the weaving process, the braking mechanism provides power to drive the supports 400, which in turn drive the first heddle wire unit 111 and the second heddle wire unit 112 respectively, to complete the relative lifting and lowering movement of the two.

[0053] Please see Figures 3-4 As shown, a weaving method for a high-porosity, thick, multi-layered twill-woven interlocking fabric 200 includes the following steps:

[0054] S1. The warp feeding mechanism provides the pile warp 214 and the twill warp 213 respectively, and the weft feeding mechanism provides the weft yarn 211 and the reinforcing weft yarn 212 respectively; the twill warp 213 and the pile warp 214 pass through the eyelets of the heddle 110 and the saddle heddle 120 of the new heddle 100 respectively, and the pile warp 214 is controlled by the multi-eye eccentric heddle 500. A single multi-eye eccentric heddle 500 controls n-1 evenly arranged pile warps 214;

[0055] S2. When the first heddle unit 111 and the second heddle unit 112 of the heddle 110 move relative to each other, the heddle 110 and the saddle heddle 120 control the twisting warp 213 to form n weaving points; the n weaving points correspond to n layers of fabric.

[0056] S3. The weft insertion rapier 300 enters the weaving hole, and its n rapiers correspond to the n weaving holes in step S2 respectively, and feed in the reinforcing weft yarn 212 to complete one weft insertion of the reinforcing weft yarn 212.

[0057] S4. The weft insertion rapier 300 exits the weaving point, the first heddle unit 111 and the second heddle unit 112 remain stationary, and the two multi-eye eccentric heddles 500 undergo relative lifting and lowering motion.

[0058] S5. The weft insertion rapier 300 re-enters the weaving hole and feeds in the weft yarn 211, completing the weft insertion of the weft yarn 211;

[0059] S6. The weft insertion rapier 300 exits the weaving hole, the first heddle unit 111 and the second heddle unit 112 remain stationary, and the two multi-eye eccentric heddles 500 undergo lifting and lowering movements in the opposite direction to the movements in step S4, thereby realizing the weaving of the X-shaped structure; and repeat step S3 to complete the secondary weft insertion of the reinforcing weft yarn 212.

[0060] S7. After the weft insertion rapier 300 exits the weaving point, the first heddle unit 111 and the second heddle unit 112 undergo a lifting and lowering motion in the opposite direction to the movement of the two in step S1, forming a new n weaving points, and repeating steps S3 to S7 until the large-pore, high-thickness, multi-layer twisted woven interval braid 200 is completed.

[0061] Specifically, in step S3 or step S6, when the weft insertion of the weft insertion rapier 300 is the reinforcing weft yarn 212, the movement distance of the saddle heddle 120 can be adjusted to make the reinforcing weft yarn 212 contact and interweave with the bending point of the pile warp 214, fix the pile warp 214 and provide support points for it to form an X-shaped structure.

[0062] Please see Figure 5 As shown, a high-density, multi-layered twill-woven fabric 200 with large pores includes an outer layer 210, several intermediate layers 220, and a support layer 230. The support layer 230 connects the outer layer 210 with the intermediate layers 220, or connects the intermediate layers 220 with each other. The support layer 230 forms an X-shaped structure between the outer layer 210 and the intermediate layers 220, or between the intermediate layers 220.

[0063] Please see Figures 6-7 As shown, both the outer layer 210 and the middle layer 220 include a weft yarn 211, reinforcing weft yarns 212 on both sides of the weft yarn 211, a twisted warp 213 woven with the weft yarn 210 or the reinforcing weft yarn 212, and a pile warp 214; the reinforcing weft yarn 212 and the pile warp 214 interweave at the bends, fix the pile warp 214, and provide support points for the pile warp 214 to form an X-shaped structure.

[0064] In some specific embodiments, the weft density of weft yarn 211 is 2 to 4 threads / cm, the warp density of twill warp 213 is 2 to 8 threads / cm, and the warp density of pile warp 214 is 2 to 8 threads / cm.

[0065] In some specific embodiments, the thickness of the overall woven material can be controlled by increasing the number of intermediate layers 220. The layers are connected by X-shaped pile warps 214, satisfying the overall thickness requirements of the woven fabric and achieving fabric integrity. This results in a high-thickness, multi-layered, spaced woven fabric with a stable structure, uniform stress distribution, strong impact resistance, large porosity, and minimal yarn slippage. Furthermore, plain weave warp yarns can be incorporated into the intermediate layer 220, effectively providing tensile mechanical properties to the woven fabric in the warp direction. To ensure good tensile mechanical properties in this layer, the weft yarns 211 and plain weave warp yarns can be made of high-strength, elastic, and plastic fibers or yarns, providing excellent tensile strength to the woven fabric; the plain weave warp density is 2–8 yarns / cm.

[0066] It should be noted that in actual industrial production, the thickness of this large-pore, high-thickness, multi-layer twisted woven fabric 200 can reach up to 24cm; if the thickness is too large, the strength of the woven fabric and its compressive strength may decrease.

[0067] The support layer 230 includes an X-shaped cross structure of the pile warp 214. This cross structure connects the outer layer 210 and several intermediate layers 220 into a single structure, effectively supporting the outer layer 210 and the intermediate layers 220, forming a structure similar to an air layer. By adjusting the length of the pile warp 214 and the number of weft yarns 211 crossing it, the angle and height of the triangles in the X-shaped structure can be adjusted, allowing for control over the overall thickness and mechanical properties of the woven material.

[0068] In some specific embodiments, the support layer 230 can improve its mechanical properties in the vertical direction by using fibers or yarns with greater rigidity or by increasing the number of warp threads 214, thereby providing good compression resistance to the knitted body.

[0069] The fabric formed by the present invention using a twill weaving machine has a twill structure and an X-shaped support layer, which makes it difficult for the weft yarns 211 to slip. The weft yarns 211 also form larger pores, which is beneficial for subsequent foaming, filling and resin impregnation processes, making it easier for the filler and resin to penetrate into the fabric.

[0070] Example 1

[0071] Please see Figures 5-8As shown, this embodiment provides a large-pore, high-thickness, multi-layered twill-woven fabric and its twill weaving device and weaving method. The fabric includes an outer layer 210, an intermediate layer 220, and two support layers 230. The support layer 230 connects the outer layer 210 and the intermediate layer 220, forming an X-shaped structure between the outer layer 210 and the intermediate layer 220. Both the outer layer 210 and the intermediate layer 220 include a weft yarn 211, reinforcing weft yarns 212 on both sides of the weft yarn 211, a twill warp 213 twilled with the weft yarn 211 or the reinforcing weft yarn 212, and a pile warp 214. The reinforcing weft yarns 212 and the pile warp 214 interweave at their bends, fixing the pile warp 214 and providing support points for the pile warp 214 to form an X-shaped structure. The support layer 230 includes an X-shaped cross structure of the pile warp 214. In the intermediate layer 220, the plain weave warp density is 8 threads / cm; the weft density is 2 threads / cm; the twill warp density is 4 threads / cm; the pile warp density is 4 threads / cm; the pile warp height is 2cm; and the thickness of the knitted body is 4cm.

[0072] Please see Figures 1-2 As shown, in a weaving device for a high-pore, thick, multi-layered twill-woven interlaced fabric, the opening mechanism includes a new type of heddle 100 with three twill weaving openings, and the weft insertion mechanism includes a weft insertion rapier 300 that cooperates with the three twill weaving openings of the new heddle 100. The new heddle 100 includes three layers of lifting heddle 110 and saddle heddle 120. The hooks 130 on both sides of the lifting heddle 110 are connected to the hooks 130 on both sides of the saddle heddle 120 through elastic components. The number of rapiers in the weft insertion rapier 300 is three. The lifting heddle 110 has a hollow rectangular structure in the middle with a thickness of 3mm and a hollow structure in the middle of 1mm, used to install the saddle heddle 120. The saddle heddle 120 is a rectangular stainless steel sheet with three warp threads, each warp thread eye being 130mm apart.

[0073] The heald 110 includes a first heald unit 111 and a second heald unit 112 that can move relative to each other; both the first heald unit 111 and the second heald unit 112 are connected to the riding heald via hooks 130; the opening mechanism includes multiple new heals 110 and two supports 400, the two supports 400 being fixedly connected to the first heald unit 111 and the second heald unit 112 of the heald 110 respectively.

[0074] Please see Figure 4 As shown, a method for weaving a high-porosity, thick, multi-layered twill-woven fabric includes the following steps:

[0075] S1. The warp feeding mechanism provides the pile warp 214 and the twill warp 213 respectively, and the weft feeding mechanism provides the weft yarn 211 and the reinforcing weft yarn 212 respectively; the twill warp 213 passes through the eyelets of the heddle 110 and the saddle heddle 120 of the new heddle 100, and the pile warp 214 is controlled by the multi-eye eccentric heddle 500.

[0076] S2. When the first heddle unit 111 and the second heddle unit 112 of the heddle 110 move relative to each other, the heddle 110 and the saddle heddle 120 control the twisted warp 213 to form 3 weaving points, and the 3 weaving points correspond to 3 layers of fabric; there are two multi-eye eccentric heddle 500s, and each multi-eye eccentric heddle 500 has 2 heddle eyes, controlling 2 evenly arranged pile warps 214;

[0077] S3. The weft insertion rapier 300 enters the weaving hole, and its three rapiers correspond to the three weaving holes in step S2 respectively, and feed in the reinforcing weft yarn 212, completing one weft insertion of the reinforcing weft yarn 212;

[0078] S4. The weft insertion rapier 300 exits the weaving point, the first heddle unit 111 and the second heddle unit 112 remain stationary, and the two multi-eye eccentric heddles 500 undergo relative lifting and lowering motion.

[0079] S5. The weft insertion rapier 300 re-enters the weaving hole and feeds in the weft yarn 211, completing the weft insertion of the weft yarn 211;

[0080] S6. The weft insertion rapier 300 exits the weaving hole, the first heddle unit 111 and the second heddle unit 112 remain stationary, and the two multi-eye eccentric heddles 500 undergo lifting and lowering movements in the opposite direction to the movements in step S4, thereby realizing the weaving of the X-shaped structure; and repeat step S3 to complete the secondary weft insertion of the reinforcing weft yarn 212.

[0081] S7. The weft insertion rapier 300 exits the weaving point, and the first heddle unit 111 and the second heddle unit 112 undergo a lifting and lowering motion in the opposite direction to the movement of the two in step S1, forming three new weaving points, and repeating steps S3 to S7 until the large-pore, high-thickness, multi-layer twisted interlaced braided body 200 is completed.

[0082] Examples 2-5

[0083] Please see Figures 9-12 As shown, Examples 2-5 provide a large-pore, high-thickness, multi-layer twill-woven interlaced braid and its twill-weaving device and weaving method. Compared with Example 1, the difference is that Examples 2-5 adjust the included angle and height of the X-shaped structure by adjusting the number of weft yarns 211 in the outer layer 210 and the number of weft yarns 211 in the middle layer 220 across the cross structure of the pile warp 214 in the support layer 230.

[0084] In Example 2, the cross structure of the pile warp 214 in the support layer 230 connects the weft yarn 211 in the outer layer 210 and the two weft yarns spanning the middle layer 220, as shown below. Figure 9 ;

[0085] In Example 3, the cross structure of the pile warp 214 in the support layer 230 connects the weft yarn 211 in the outer layer 210 and the three weft yarns in the middle layer 220, as shown below. Figure 10 ;

[0086] In Example 4, the cross structure of the pile warp 214 in the support layer 230 connects the weft yarn 211 in the outer layer 210 and the weft yarn across one weft yarn in the middle layer 220, but the two pile warp 214 cross each other in the weft direction, such as... Figure 11 ;

[0087] In Example 5, the cross structure of the pile warp 214 in the support layer 230 connects the weft yarn 211 in the outer layer 210 and the two weft yarns spanning across in the middle layer 220, and the two pile warp 214 cross each other in the weft direction, as shown below. Figure 12 The processes and apparatus used in Examples 2 to 5 are largely the same as those in Example 1, and will not be described again here.

[0088] Figures 9-12 The diagram shows the crossover pattern and structure of the X-shaped yarns in Examples 2-5 from a side view. Therefore, for ease of viewing, the reinforcing weft yarn 212 is omitted. In practice, reinforcing weft yarns 212 are provided on both sides of the weft yarn 211 to fix the pile warp 214 and provide support points for its X-shaped structure. In Examples 2-3, the triangular stable X-shaped structure formed by the support layer 230 is lower in height than in Example 1, and the angle between the pile warp 214 and the intermediate layer 220 is smaller than in Example 1. The recovery speed after compression is slower than in Example 1, but the knitted body is softer. In Examples 4-5, the friction between the pile warps 214 is effectively increased, making the knitted body structure more stable.

[0089] Example 6

[0090] Please see Figure 13 As shown, Example 6 provides a high-density, multi-layered twill-woven fabric with large pores and a twill-woven device and weaving method. Compared with Example 1, the difference is that the intermediate layer 220 of Example 6 has two layers and the support layer 230 has three layers, thereby increasing the thickness of the woven fabric to 8cm. The device and method vary according to the number of layers of the woven fabric. The rest is roughly the same as Example 1, and will not be described again here. Figure 13 The simplified diagram of the multi-layer structure shows the layer structure and X-shaped structure of the braid. Therefore, for ease of viewing, the reinforcing weft yarn 212 is omitted. In reality, reinforcing weft yarns 212 are set on both sides of the weft yarn 211 to fix the pile warp 214 and provide support points for it to form an X-shaped structure.

[0091] Example 7

[0092] Please see Figure 14As shown, Example 7 provides a large-pore, high-thickness, multi-layer twill-woven interlaced braid and its twill-weaving device and weaving method. Compared with Example 1, the difference is that the intermediate layer 220 of Example 6 is n layers and the support layer 230 is n+1 layers, thereby increasing the thickness of the braid. The device and method change accordingly according to the number of layers of the braid. The rest is roughly the same as Example 1, and will not be described again here. Figure 14 For ease of viewing, the reinforcing weft yarn 212 is omitted. In reality, reinforcing weft yarns 212 are set on both sides of the weft yarn 211 to fix the pile warp 214 and provide support points for it to form an X-shaped structure.

[0093] In summary, this invention provides a large-pore, high-thickness, multi-layer twill-woven spacer fabric, its twill weaving device, and weaving method. The twill weaving device's opening mechanism includes novel heddles with multiple twill weave openings. These novel heddles comprise multi-layered lifting heddles and saddle heddles capable of relative movement. The saddle heddles have multiple eyelets with the same number of layers as the lifting heddles. The hooks on both sides of the lifting heddles are connected to the hooks on both sides of the saddle heddles via elastic components. Through the interaction of the lifting and saddle heddles, the distance between the heddle eyelets can be flexibly adjusted during the twill weaving process by adjusting the movement path, thereby adjusting the distance of the twill weave openings and forming multiple appropriately angled weave openings. This ensures successful weft insertion and achieves integrated weaving of multi-layer twill-woven spacer fabrics. This invention, through the control of multi-eye eccentric heddles, enables the pile warp to form an X-shaped structure between the outer and middle layers, or between the middle layers. This not only meets the thickness requirements of the woven fabric and achieves the integrity of the fabric, but also produces a high-thickness, multi-layer spaced woven composite material with a stable structure, uniform stress distribution, numerous internal pores, high strength, high air permeability, high moisture permeability, and minimal yarn slippage. This invention improves the heddle mechanism of traditional skein weaving devices and, combined with an improved skein weaving process, achieves low modification costs, simple processes, and high feasibility, enabling the industrial-scale mass production of high-thickness, multi-layer spaced woven fabrics. The resulting woven fabric possesses advantages such as structural stability, impact resistance, high strength, compression resistance, bending resistance, and good self-supporting properties, demonstrating significant commercial application value.

[0094] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A weaving device for a high-pore, thick, multi-layered twill-woven fabric, comprising a frame, a braking mechanism, a warp feeding mechanism, a weft feeding mechanism, a weft insertion mechanism, a shedding mechanism, and a take-up mechanism, characterized in that, The opening mechanism includes a heddle with n twill weave openings, and the weft insertion mechanism includes a weft insertion rapier that cooperates with the n twill weave openings of the heddle; the heddle includes n layers of lifting heddle and saddle heddle, the saddle heddle has n holes with the same number of layers as the lifting heddle, and the hooks on both sides of the lifting heddle are connected to the hooks on both sides of the saddle heddle through elastic components. In the n twisted weaves of the heddle wire, n≥3; the number of weft insertion rapiers is the same as the number of layers of the heddle wire; The weaving device also includes two multi-eye eccentric heddles, each of which has n-1 heddle eyes, controlling n-1 evenly arranged pile warps.

2. The weaving device for the high-porosity, thick, multi-layered twill-woven spaced braid according to claim 1, characterized in that, The heald wire includes a first heald wire unit and a second heald wire unit that can move relative to each other; both the first heald wire unit and the second heald wire unit are connected to the riding heald wire through the hook; the opening mechanism includes multiple heals and two supports, and the two supports are respectively fixedly connected to the first heald wire unit and the second heald wire unit of the heald wire.

3. A method for weaving a high-porosity, thick, multi-layered twill-woven fabric, characterized in that, Includes the following steps: S1. The warp feeding mechanism provides the pile warp and the skein warp respectively, and the weft feeding mechanism provides the weft yarn and the reinforcing weft yarn respectively; the skein warp passes through the eyelets of the heddle wire and the saddle heddle wire of the heddle wire, and the pile warp is controlled by the multi-eye eccentric heddle wire, and a single multi-eye eccentric heddle wire controls n-1 uniformly arranged pile warp wires; S2. When the first heddle unit and the second heddle unit of the heddle-lifting yarn move relative to each other, the heddle-lifting yarn and the saddle heddle control the twisting to form n weaving points; the n weaving points correspond to n layers of fabric; S3. The weft insertion rapiers enter the weaving opening, and the n rapiers respectively enter the n weaving openings of step S2, and feed the reinforcing weft yarn in, completing one weft insertion of the reinforcing weft yarn; S4. The weft insertion rapier exits the weaving point, the first heddle unit and the second heddle unit remain stationary, and the two multi-eye eccentric heddles undergo relative lifting and lowering motion. S5. The weft insertion rapier re-enters the weft opening and feeds in the weft yarn, completing the weft insertion of the weft yarn; S6. The weft insertion rapier exits the weaving point, the first heddle unit and the second heddle unit remain stationary, and the two multi-eye eccentric heddles undergo lifting and lowering movements in the opposite direction to the movement of the two in step S4, thereby realizing the weaving of the X-shaped structure; and step S3 is repeated to complete the secondary weft insertion of the reinforcing weft yarn; S7. After the weft rapier exits the weaving point, the first heddle unit and the second heddle unit undergo a lifting and lowering motion in the opposite direction to the motion in step S2, forming a new n weaving points, and repeating steps S3 to S7 until the large-pore, high-thickness, multi-layer twisted interlaced braided body is woven.

4. The weaving method of the high-porosity, thick, multi-layered twill-woven interlaced fabric according to claim 3, characterized in that, In step S3 or step S6, when the weft insertion of the weft insertion rapier is the reinforcing weft yarn, the movement distance of the saddle heddle is adjusted so that the reinforcing weft yarn contacts and interweaves with the bending point of the pile warp, fixing the pile warp and providing support points for it to form an X-shaped structure.

5. A high-porosity, thick, multi-layered twisted-weave interlaced fabric, characterized in that, The high-porosity, thick, multi-layered twisted-weave spaced braided body includes an outer layer, several intermediate layers, and a support layer; the support layer connects the outer layer and the intermediate layers, or connects the intermediate layers with each other, and the support layer forms an X-shaped structure between the outer layer and the intermediate layers, or between the intermediate layers; Both the outer layer and the middle layer include weft yarns, reinforcing weft yarns on both sides of the weft yarns, twisted warp yarns woven with the weft yarns or reinforcing weft yarns, and pile warp yarns; the reinforcing weft yarns contact and interweave with the bends of the pile warp yarns, fixing the pile warp yarns and providing support points for the pile warp yarns to form an X-shaped structure.

6. The high-porosity, thick, multi-layered twill-woven fabric according to claim 5, characterized in that, The support layer includes an X-shaped cross structure of the pile warp; by adjusting the length of the pile warp and the number of weft yarns crossing it, the angle and height of the triangle in the X-shaped structure can be adjusted.

7. The high-porosity, thick, multi-layered twill-woven fabric according to claim 6, characterized in that, The thickness of the high-density, multi-layered twill weave with large pores is 4cm to 24cm; the weft density of the weft yarn is 2 to 4 yarns / cm, the warp density of the twill warp is 2 to 8 yarns / cm, and the warp density of the pile warp is 2 to 8 yarns / cm.

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