Efficient overlock technology of improved double-layer overlock ribbon on shuttleless ribbon loom

Abstract

The invention discloses an efficient overlock technology of an improved double-layer overlock braid on a shuttleless ribbon loom, and particularly relates to an efficient overlock technology for applying a braid weaving technology of a velvet machine to the shuttleless ribbon loom. According to the process, a velvet machine overlock technology and accessories are combined, and the efficient and high-quality velvet woven belt production process is achieved on a shuttleless ribbon loom. Comprising the following steps: firstly, determining that the number of warps is 382, and the number of wefts and the number of side lines are 2 so as to ensure that the basic structure of the braid is stable; secondly, according to a preset process yarn threading graph, the warp yarn needed by each frame is precisely threaded; then, the first chain is designed to be distributed in the 18 frames by 48 sections, so that the overall stability and uniformity of the braid are improved; then, the weft density needle number is set, so that the braid has good structural strength and wear resistance while keeping softness; and finally, a double-hole side hook of the velvet machine is adopted as a side line hook and is matched with a common double-weft weft hook which is balanced up and down, the overlock technology is improved, and the tight and smooth overlock is realized, so that the adjustment process is simplified, the production efficiency is improved, and the market competitiveness of the product is reduced.

Description

[Technical field]

[0001] The invention relates to the field of textiles, and in particular to a high-efficiency edge locking process for an improved double-layer edge locking webbing on a shuttleless webbing machine. [Background technology]

[0002] The traditional Z10 double-weft double-line double-layer weaving process often leads to problems such as complex adjustment, unstable quality and loose edge locking due to the front-to-back arrangement of weft hooks and side hooks during the weaving process. These problems not only affect production efficiency, but also reduce the market competitiveness of products. Therefore, how to simplify the adjustment process, improve webbing quality and edge locking tightness has become a technical problem that needs to be solved urgently in the weaving industry. [Summary of the invention]

[0003] In order to solve the above problems, an improved double-layer lock-edge webbing efficient lock-edge process on a shuttleless webbing machine is proposed; specifically, the webbing weaving process of the velvet machine is improved and applied to the shuttleless webbing machine. By optimizing the configuration of the weft hook and the edge hook and the lock-edge method, an efficient upper and lower double-layer lock-edge process is achieved, making the production of double-layer webbing simpler, more efficient and of higher quality. Specifically, the following steps are included:

[0004] 1. Raw material preparation: The number of warp threads is set to 320, including 62 root threads, 2 weft threads and 2 side threads, and 2 bud threads to ensure the stability of the basic structure of the ribbon.

[0005] 2. Yarn threading steps: According to the preset process threading diagram, the number of warp yarns required for each heald frame is accurately threaded to ensure that the yarns are arranged in order, laying a good foundation for subsequent weaving. Among them, the number of heald frames is 18, and the first 1-4 frames are double-hole healds with a root thread on the top and bottom, which matches the needs of the double-layer structure of the webbing and reduces the number of heald frames and healds used in the fabric, reducing the damage to the yarn caused by the movement of the healds during the weaving process. Among them, the first frame has 18 wires, the second frame has 9 wires, the third and fourth frames have 2 wires each, the fifth frame has 13 wires, the sixth frame has 14 wires, the seventh frame has 26 wires, the eighth frame has 30 wires, the ninth frame has 44 wires, the tenth frame has 48 wires, the eleventh frame has 24 wires, the twelfth frame has 26 wires, the thirteenth frame has 24 wires, the fourteenth frame has 24 wires, the fifteenth frame has 9 wires, the sixteenth frame has 8 wires, the seventeenth frame has 16 wires, and the eighteenth frame has 16 wires.

[0006] 3. Pre-chain loop design: According to the structural design of the webbing, the pre-chain has a total of 48 sections, distributed in 18 heald frames. One circle of the pattern chain drum is set with 8 chain sections. The arrangement of high, medium and low chain sections is set to control the rise and fall of the yarn and form corresponding patterns and structures.

[0007] 4. Weft density control: Set the weft density to 17.2 needles, the hoop grid specification to 10.5PC, the hoop grid includes the arrangement of the reed, the reed is arranged into multiple rows, and the bud line is set on the outside of the first and last rows to ensure that the bud line will not be woven together with the warp.

[0008] 5. Accessories assembly: The double-hole side hook of the velvet machine is used as the overlocking needle, combined with the double weft needles that are balanced up and down; the overlocking needle and the weft needle are not on the same side; this structure can perform double-sided overlocking on both sides. When the weft needle and the hook needle are performing the overlocking operation, they will pass through the bud line, which not only fixes the overlocking line on the edge of the ribbon, but also forms a lace effect through the interlacing of the bud line; the accessories assembly also includes a fixed block, a reed, a belt pressing plate handle and a needle seat. The fixed block can be assembled on a velvet machine and a shuttleless loom. The needle seat and the reed are designed on the fixed block and include overlocking needles and weft needles. The belt pressing plate handle is designed on the weft needle to adjust the weft tension.

[0009] 6. Edge locking optimization: The edge locking optimization steps include adjusting the relevant parameters of the shuttle loom, pre-shrinking the webbing and edge reinforcement.

[0010] Parameter adjustment includes: Warp tension: According to the material, thickness and required fabric tightness of the webbing, adjust the warp tension to an appropriate range, set between 50 and 80 Newtons per strand to ensure that the warp maintains a stable tension state during weaving; Weft tension: The weft tension matches the warp tension, and the value set by the belt pressing handle is slightly smaller than the warp tension by 10 to 20 Newtons per strand to ensure the flatness and structural stability of the fabric; Loom speed: Increasing the loom speed can improve production efficiency. The speed of the shuttleless loom is set in the range of 800 to 900 rpm; Weft insertion speed: The weft insertion speed is consistent with the loom speed.

[0011] The pre-shrinkage treatment is to lightly spray the yarn with steam or spray during the weaving process to expand and relax the fibers in the webbing, thereby achieving the purpose of pre-shrinkage.

[0012] The edge reinforcement is a lock-edge line that can be used as a line to reinforce the edge, and can also act as part of the weft line. The overlap of the lock-edge line and the weft line can achieve double-sided locking on both sides of the fabric through two weft needles distributed on the left and right and two lock-edge needles with double holes distributed in the same way.

[0013] Furthermore, an improved high-efficiency edge-locking process for double-layer edge-locking webbing on a shuttleless webbing machine is provided, wherein the webbing is a double-layer structure woven by a shuttleless webbing machine and has a double-layer edge-locking structure with a lace shape.

[0014] The beneficial effects of the present invention are as follows:

[0015] In the traditional Z10 weaving method, the advantages of the shuttleless loom and velvet loom are combined, and the velvet machine edge locking method and accessories are used on the shuttleless loom; through the modified parameter adjustment and edge locking optimization steps, the edge locking is made tighter and smoother, which effectively solves the problems of complicated adjustment, unstable quality and loose edge locking when the weft hook and the side hook are used in the traditional process, and significantly improves the quality of the ribbon. The simplified adjustment process and optimized edge locking technology have significantly improved production efficiency. In addition, the accessory configuration method reduces the difficulty of operation and improves the overall flexibility and operability of the production line.

Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the weaving process of the present invention;

[0017] Figure 2 It is a schematic diagram of the first chain cycle of the present invention;

[0018] Figure 3 This is a schematic diagram of assembling the edge locking accessories of the present invention;

[0019] Figure 4 It is a schematic diagram of the double-layer webbing structure of the present invention. [Specific implementation method]

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The improved velvet webbing high-efficiency edge-locking process on the shuttleless webbing machine of this technical implementation scheme realizes the simplification, high efficiency and quality improvement of webbing production through a series of fine steps and innovative configurations. The following is a detailed analysis of the process:

[0022] 1. Raw material preparation

[0023] Warp number: set to 320, which is determined by the width, density and strength requirements of the webbing. Root thread: 62, used to enhance the structural stability and durability of the webbing. Weft and side thread: 2 each, the weft is used to interweave with the warp to form the main body of the webbing, and the side thread is used for edge locking and reinforcement. Bud thread: 2, used to form a lace effect during the edge locking process.

[0024] 2. Threading the yarn

[0025] The heald frame is equipped with 18 heald frames, and the first 4 frames use double-hole healds with one wrapped wire each on the top and bottom to meet the requirements of the double-layer structure of the webbing. By optimizing the threading method, the number of heald frames and healds is reduced to reduce the damage to the yarn. Threading configuration: the first frame threads 18 wires, the second frame threads 9 wires, the third frame and the fourth frame each thread 2 wires, the fifth frame threads 13 wires, the sixth frame threads 14 wires, the seventh frame threads 26 wires, the eighth frame threads 30 wires, the ninth frame threads 44 wires, the tenth frame threads 48 wires, the eleventh frame threads 24 wires, the twelfth frame threads 26 wires, the thirteenth frame threads 24 wires, the fourteenth frame threads 24 wires, the fifteenth frame threads 9 wires, the sixteenth frame threads 8 wires, the seventeenth frame threads 16 wires, and the eighteenth frame threads 16 wires.

[0026] 3. First chain loop design

[0027] There are 48 chain links in total, distributed in 18 heald frames, X is high chain, Δ is middle chain, � is low chain, and 8 chain links are required for one circle of the flower chain drum to ensure that every 8 chain links form a complete cycle. The cycle of the flower chain drum is set to configure the chain links of each heald frame according to high, middle and low chains. The specific distribution example is as follows Figure 2 As shown in the figure, according to the arrangement of high, medium and low chain links, the rotation of the pattern chain drum will drive the heald frames to rise and fall in a predetermined order, thereby controlling the interweaving of the yarns. Since the chain links in each heald frame are arranged differently, the interweaving pattern of the yarns will also change with the rotation of the pattern chain drum, forming a continuous cycle and pattern.

[0028] 4. Weft density control

[0029] Weft density: 17.2 needles according to the density requirements of the ribbon.

[0030] Hoop grid specification: 10.5PC, through the reasonable arrangement of 26 reeds, to ensure the uniform distribution of the weft during the weaving process. Figure 1 As shown, the bud wires are arranged in the 1st row and the 26th row to prevent the bud wires from being woven into the main body of the ribbon.

[0031] 5. Accessories assembly

[0032] like Figure 3The accessories shown in the figure are assembled, and the accessories include a fixed block 1 and a steel reed 7. The fixed block 1 is provided with a needle seat 2, and the needle seat 2 is provided with a weft needle 4, a locking needle 5 and a knitting needle 6, etc. The weft needle 4 is provided with a belt pressing handle 3 to adjust the warp tension. Through fine assembly and adjustment, the smooth weaving process is ensured. The locking needle 5 uses a double-hole edge hook as the locking needle 5, and the weft needle 4 is penetrated with a double-layer weft thread 9, and the needle hole of the locking needle 5 is penetrated with a double-layer locking thread 8. Bud threads 10 are provided on both sides of the steel reed 7, and the double weft weft needles 4 and the knitting needles 6 that are balanced up and down are used for edge sealing and lace processing. This configuration allows double-sided locking on both sides, thereby improving the efficiency and quality of locking. The fixed block 1 is fixed to the ribbon loom by screws, and can be installed on the velvet machine and shuttle loom according to the process requirements, or on other mechanical equipment. The improvement of the fixed block can realize the function of one machine with multiple uses.

[0033] 6. Edge locking optimization

[0034] Parameter adjustment:

[0035] Warp tension: 50-80 N / strand, adjusted according to the material and thickness of the webbing. Weft tension: slightly less than the warp tension, 10-20 N / strand, set by the belt pressing handle 3 to ensure the fabric is flat. Loom speed: 800-900 rpm, to improve production efficiency. Weft insertion speed: consistent with the loom speed to ensure accurate weft insertion.

[0036] Pre-shrinkage: Use steam or spray to lightly spray the yarn during the weaving process to expand and relax the fibers, reducing the shrinkage of the ribbon.

[0037] Edge reinforcement: The lock edge line is used as a line to reinforce the edge and can also act as part of the weft line. Through two weft needles distributed on the left and right and two double-hole lock edge needles distributed in the same way, double-sided lock edge can be achieved on both sides.

[0038] Product features: The webbing is woven by an improved shuttleless webbing machine and has a double-layer structure to enhance the overall strength. The double-layer lock-edge structure with lace shape is not only beautiful but also durable.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An improved high-efficiency edge-locking process for double-layer edge-locking webbing on a shuttleless webbing machine, characterized in that: It includes raw material preparation, yarn threading, pre-chain loop design, weft density control, and accessories assembly and edge locking optimization steps; The raw material preparation includes setting the number of warps, the number of wrapping threads, the weft threads and the edgelock threads; the warps are interwoven with the weft threads, the edgelock threads are located on the side of the ribbon, and a plurality of bud threads are arranged on the side of the edgelock threads; during the weaving process, the edgelock threads are guided to the side of the ribbon and are tied with the weft threads; The threading is carried out according to the preset threading diagram and the number of heald frames, and the number of warp threads required for each frame is accurately threaded into the heald frame; The first chain cycle design has 48 first chain sections, which are distributed in the harness frame of the threading step. The arrangement of high, medium and low chain sections is set in the harness frame. One circle of the pattern chain drum is set with 8 chain sections to control the rise and fall of the yarn and form corresponding patterns and structures. The weft density control sets the weft density to 17.2 needles and the hoop grid specification to 10.5 PC; The described accessory assembly uses a velvet machine double-hole edge hook as a lock stitch needle, and cooperates with a double weft needle that is balanced up and down; the described lock stitch needle and the weft needle are not on the same side; this structure can perform double-sided lock stitching on both sides, and when the weft needle and the hook needle perform the lock stitching operation, they will pass through the bud line, which not only fixes the lock stitch on the edge of the ribbon, but also forms a lace effect through the interlacing of the bud line; The edge locking optimization step includes adjusting relevant parameters of the shuttle loom, pre-shrinking of the webbing and edge reinforcement.

2. The high-efficiency edge-locking process of an improved double-layer edge-locking webbing on a shuttleless webbing machine according to claim 1, characterized in that: There are 18 heald frames in the threading step, the first 1-4 frames are double-hole healds, and a root wire is respectively threaded on the upper and lower sides of the double-hole healds.

3. The high-efficiency edge-locking process of the improved double-layer edge-locking webbing on the shuttleless webbing machine according to claim 1 is characterized in that: The accessory assembly comprises a fixing block, a reed, a belt pressing plate handle and a needle seat. The needle seat and the reed are designed on the fixing block. The needle seat is provided with a locking needle and a weft needle. The fixing block can be assembled on a velvet machine and a shuttleless loom.

4. The high-efficiency edge-locking process of the improved double-layer edge-locking webbing on the shuttleless webbing machine according to claim 1 is characterized in that: The hoop grid includes an arrangement of row reeds, the row reeds are arranged in multiple rows, and the bud lines are arranged on the outside of the first row and the last row.

5. The high-efficiency edge-locking process of an improved double-layer edge-locking webbing on a shuttleless webbing machine according to claim 1, characterized in that: The parameter adjustment of the edge locking optimization includes: Warp tension: According to the material, thickness and required fabric density of the webbing, adjust the warp tension to an appropriate range, set between 50 and 80 Newtons per strand, to ensure that the warp yarn maintains a stable tension state during the weaving process; Weft tension: The weft tension matches the warp tension, and the value set by the belt pressing handle is slightly smaller than the warp tension by 10-20 Newtons / strand to ensure the flatness and structural stability of the fabric; Loom speed: Increasing the loom speed can improve production efficiency. The speed of the shuttleless loom is set in the range of 800 to 900 rpm; Weft insertion speed: The weft insertion speed should be consistent with the loom speed.

6. The high-efficiency edge-locking process of an improved double-layer edge-locking webbing on a shuttleless webbing machine according to claim 1, characterized in that: The pre-shrinking treatment is to lightly spray the yarn with steam or spray during the weaving process to expand and relax the fibers in the webbing, thereby achieving the purpose of pre-shrinking.

7. The high-efficiency edge-locking process of the improved double-layer edge-locking webbing on the shuttleless webbing machine according to claim 1 is characterized in that: The edge reinforcement is a locking line that can be used as a line to reinforce the edge, and can also serve as part of the weft line. The functions of the locking line and the weft line overlap, and two weft needles distributed on the left and right and two locking needles distributed in the same way can achieve double-sided locking on both sides of the fabric.

8. The high-efficiency edge-locking process of an improved double-layer edge-locking webbing on a shuttleless webbing machine according to claim 1, characterized in that: The double-layer webbing is woven by a shuttleless weaving machine and has a double-layer edge-locking structure, and the double-layer edge-locking structure has a lace shape.

Images