Single machine double width cloth edge twisting device and air jet loom

Abstract

The application provides a single-machine double-width cloth twisting device, which comprises a mounting frame, two twisting gears, a driving part and two yarn guide rings, two fixed shafts are arranged on the mounting frame, the two twisting gears are rotatably sleeved on the two fixed shafts and are in engagement with each other, two yarn penetrating holes are symmetrically arranged on the center of each twisting gear, two yarn frames are arranged on the side of each twisting gear away from the weaving mouth of the paint spraying loom, yarn wheels are arranged on the two yarn frames, the twisting yarns wound on the two yarn wheels pass through the two yarn penetrating holes respectively, the driving part is in engagement with one of the twisting gears, the top of the yarn guide ring is higher than the warp-weft interlacing surface, and the two twisting gears rotate synchronously under the driving of the driving part and drive two twisting yarns to form a spiral weaving mouth. The single-machine double-width cloth twisting device can realize the processing of single-machine double-width cloth of the air-jet loom, thereby doubling the production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of textile equipment technology, specifically relating to a single-machine double-width fabric selvage device and an air-jet loom. Background Technology

[0002] Air-jet looms are commonly used high-efficiency weaving equipment in the textile industry. Their working principle is to use air as the weft insertion medium. The compressed air jet generates frictional traction force on the weft yarn to pull it through the shed. The jet generated by the air jet achieves the purpose of weft insertion.

[0003] While air-jet looms offer adjustable widths to accommodate different fabric widths, they can only process fabrics in single widths. For ultra-narrow fabrics, single-width processing creates significant performance redundancy for the loom. To improve production efficiency, the common practice is to process fabric twice the required width, then divide it into sections, and finally hem the edges of the two sections. While this method increases the width utilization of the air-jet loom, the subsequent hemming of the divided sections not only fails to achieve the expected improvement in processing efficiency but also requires additional hemming processes and equipment. Therefore, to adapt to the rapidly growing demand for ultra-narrow fabrics, it is urgent to develop solutions that improve processing efficiency to enhance business profitability. Summary of the Invention

[0004] This invention provides a single-machine double-width fabric selvage device and an air-jet loom, which aims to enable the air-jet loom to perform single-machine double-width processing on ultra-narrow width fabrics, thereby improving processing efficiency.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: Firstly, a single-machine double-width fabric sewing device is provided, comprising:

[0006] The mounting bracket is used to fix it to the machine frame and is located below the warp yarn. The mounting bracket has two fixed shafts that extend horizontally along the direction of the warp yarn.

[0007] Two yarn-twisting gears are respectively mounted on two fixed shafts and mesh with each other. Each yarn-twisting gear has two yarn-passing holes symmetrically distributed along its center. Each yarn-twisting gear has two yarn frames on the side away from the weaving opening of the spray painting loom. The two yarn frames are respectively equipped with yarn wheels. The twisted edge yarn wound on the two yarn wheels passes through the two yarn-passing holes respectively.

[0008] The drive unit, mounted on the mounting frame, has an input end that is connected to the drive shaft of the air-jet loom, and an output end that meshes with one of the yarn-winding gears.

[0009] Two yarn guide rings are connected to the extension ends of two fixed shafts respectively, and are located on the side of the yarn guide gear away from the yarn frame. The top of the yarn guide ring is higher than the warp and weft interlacing surface.

[0010] In this process, the two yarn-twisting gears rotate synchronously under the drive of the drive unit and each drives two yarn-twisting threads to form a spiral weave. The two yarn-twisting threads passing through the same yarn-twisting gear are alternately raised above the warp and weft interlacing surface under the guidance of the yarn guide ring, so that the weft yarn passes through the spiral weave.

[0011] In conjunction with the first aspect, in one possible implementation, the yarn guide ring is an elliptical ring with its major axis extending in a vertical direction, and a connecting frame is provided on the inner ring surface of the yarn guide ring, the connecting frame being connected to the fixed shaft, and at least a portion of the outer ring surface of the yarn guide ring is used to abut against and guide the twisted edge yarn.

[0012] In some embodiments, the extension ends of the two fixed shafts are provided with connecting rods that extend toward each other, and the extension ends of the two connecting rods are provided with support rods that extend toward the direction away from the yarn twisting gear and are fixedly connected to the yarn guide ring.

[0013] For example, the length of the minor axis of the ellipse of the yarn guide ring is less than the distance between the two yarn holes on the same yarn twisting gear; an elastic contact strip is provided on the outer side of the two yarn guide rings that are far apart from each other on the mounting frame, and the horizontal distance between the two elastic contact strips and their respective adjacent fixed shafts is less than half the distance between the two yarn holes on the same yarn twisting gear; two sensors are provided on the mounting frame, which are located on the sides of the two elastic contact strips respectively, and the elastic contact strips are used to swing under the touch of the twisted yarn to trigger the sensor's sensing signal.

[0014] In conjunction with the first aspect, in one possible implementation, two elastic supports are provided on the side wall of the twisted yarn gear away from the yarn guide ring, and the two elastic supports are respectively aligned with the two yarn threading holes; wherein, the two elastic supports are respectively used to elastically clamp and guide the two twisted yarns into the corresponding yarn threading holes.

[0015] For example, the elastic support includes a support base and an elastic clamp; wherein, the support base is fixedly connected to the side wall of the yarn-twisting gear and axially aligned with the yarn-threading hole, and is used to guide the yarn-twisting thread into the yarn-threading hole; the elastic clamp is provided on the support base and is used to elastically clamp the yarn-twisting thread.

[0016] In some embodiments, the support base includes a fixing ring, a plurality of conical spiral springs, and a connecting plate; wherein, the fixing ring is fixedly attached to the side wall of the yarn-twisting gear and coaxial with the yarn-passing hole; the plurality of conical spiral springs are distributed at intervals along the circumference of the fixing ring, and the large-diameter end of each conical spiral spring is fixedly connected to the fixing ring; the connecting plate is coaxially arranged with the fixing ring and is fixedly connected together with the small-diameter end of each conical spiral spring; the center of the connecting plate is provided with a yarn guide sleeve suitable for the yarn to pass through, and the elastic thread is clamped on the connecting plate.

[0017] For example, the elastic clamp includes two ear plates, a threading shaft, two clamping pieces, and two elastic elements; wherein, the two ear plates are disposed on the connecting plate and symmetrically distributed on both sides of the yarn guide sleeve; the two ends of the threading shaft are respectively connected to the two ear plates, and the peripheral wall of the threading shaft has a through hole along its radial direction suitable for the passing of the selvage yarn, the through hole being axially aligned with the yarn guide sleeve; the two clamping pieces are slidably sleeved on the threading shaft and are respectively located on both sides of the through hole; the two elastic elements are sleeved on the threading shaft and are respectively located between the two clamping pieces and the two ear plates, for applying an elastic clamping force to the selvage yarn by the two clamping pieces.

[0018] For example, the driving component includes a rotating shaft, an input gear, and an output gear; the rotating shaft is rotatably connected to the mounting bracket along the axial direction of the fixed shaft; the input gear is sleeved on the rotating shaft and is connected to the drive shaft of the air-jet loom; the output gear is sleeved on the rotating shaft and meshes with one of the yarn-twisting gears; wherein, the input gear drives the drive shaft in a one-to-one ratio, and the output gear drives the yarn-twisting gear in a one-to-two ratio.

[0019] The beneficial effects of the single-machine double-width fabric hemming device provided by the present invention are as follows: Compared with the prior art, in the single-machine double-width fabric hemming device of the present invention, the hemming yarns on the two yarn wheels pass through two yarn holes respectively, and after passing through the outer periphery of the yarn guide ring, they travel together with the warp yarns under the traction of the warp beam of the air-jet loom. During the travel, the drive component connected to the drive shaft of the air-jet loom drives the hemming gear to rotate. The two hemming yarns that pass through the two yarn holes symmetrically distributed on both sides of the center of the gear are intertwined with each other as the gear rotates. Moreover, since the yarn guide ring can guide the hemming yarns to rise above the warp and weft interlacing surface, the two hemming yarns are intertwined during one rotation of the gear. The yarn can form two spiral weaves, one above the other, relative to the warp and weft interlacing surface. By matching the gear speed and weft threading frequency, a weft yarn can be passed through each spiral weave to form a spiral selvage structure. Since the two selvage gears mesh with each other and are equipped with two corresponding yarn guide rings, two parallel spiral selvage structures can be formed on the fabric during the operation of the air-jet loom. Two narrow width fabrics can be processed at once by cutting along the position between the two spiral selvage structures. This not only makes full use of the width of the air-jet loom and reduces equipment performance redundancy, but also enables single-machine double-width fabric processing, thereby multiplying production efficiency.

[0020] Secondly, embodiments of the present invention also provide an air-jet loom, including a loom body, a dividing device, and the aforementioned single-loom double-width fabric selvedge device; the dividing device is fixedly connected to the loom body and is used to cut the fabric along the middle position of the fabric; the two spiral weaves formed by the single-loom double-width fabric selvedge device are respectively located on both sides of the dividing device.

[0021] The beneficial effects of the air-jet loom provided by the present invention are as follows: Compared with the prior art, the air-jet loom of the present invention can form two spiral helix structures on the fabric through the above-mentioned single-machine double-width fabric helix device, and then use a dividing device to separate the fabric from the two spiral helix structures, thereby realizing the processing of single-machine double-width fabric. This not only makes full use of the width of the air-jet loom to reduce equipment performance redundancy, but also enables the processing of single-machine double-width fabric, thereby multiplying production efficiency. Attached Figure Description

[0022] Figure 1 This is a cross-sectional structural schematic diagram of the single-machine double-width fabric sewing device provided in an embodiment of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the single-machine double-width fabric sewing device provided in an embodiment of the present invention;

[0024] Figure 3 This is a front view structural schematic diagram of the single-machine double-width fabric sewing device provided in an embodiment of the present invention;

[0025] Figure 4 This is a side view of the single-machine double-width fabric sewing device provided in an embodiment of the present invention;

[0026] Figure 5 This is a three-dimensional structural diagram of the elastic support member used in an embodiment of the present invention.

[0027] In the diagram: 10. Mounting frame; 11. Fixed shaft; 111. Connecting rod; 112. Support rod; 12. Elastic contact strip; 13. Sensor; 20. Yarn skein gear; 21. Yarn threading hole; 22. Yarn frame; 23. Yarn wheel; 24. Selvedge yarn; 25. Spiral weave; 30. Drive component; 31. Rotating shaft; 32. Input gear; 33. Output gear; 40. Yarn guide ring; 41. Connecting frame; 50. Warp and weft interlacing surface; 51. Weft yarn; 60. Elastic support component; 61. Support base; 611. Fixed ring; 612. Conical spiral spring; 613. Connecting disc; 6131. ​​Yarn guide sleeve; 62. Elastic wire clamp; 621. Ear plate; 622. Yarn threading shaft; 6221. Through hole; 623. Clamping piece; 624. Elastic component; 70. Loom body; 80. Dividing device. Detailed Implementation

[0028] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0029] It should be noted that the greige fabric is made of interwoven warp and weft yarns. Warp yarns are the yarns that travel under the traction of the warp beam, while weft yarns are the yarns that pass laterally through each warp yarn under the action of the air jet.

[0030] Please refer to the following: Figures 1 to 4 The single-machine double-width fabric hemming device provided by the present invention will now be described. The single-machine double-width fabric hemming device includes a mounting frame 10, two yarn-twisting gears 20, a driving component 30, and two yarn-guide rings 40. The mounting frame 10 is fixed to the machine frame and located below the warp yarns. Two fixed shafts 11 extending horizontally along the warp yarns are arranged at intervals on the mounting frame 10. The two yarn-twisting gears 20 are rotatably mounted on the two fixed shafts 11 and mesh with each other. Each yarn-twisting gear 20 has two symmetrically distributed yarn-threading holes 21 along its center, and each yarn-twisting gear 20 is away from the weaving point of the spray-painted loom. Two yarn frames 22 are provided on each side of the loom, and yarn wheels 23 are respectively installed on the two yarn frames 22. The selvage yarns 24 wound on the two yarn wheels 23 pass through the two yarn holes 21 respectively. The drive unit 30 is provided on the mounting frame 10, and has an input end that is connected to the drive shaft of the air jet loom, and also has an output end that meshes with one of the selvage gears 20. Two guide rings 40 are respectively connected to the extension ends of the two fixed shafts 11 and are located on the side of the selvage gear 20 away from the yarn frame 22. The top of the guide ring 40 is higher than the warp and weft interlacing surface 50.

[0031] The two yarn-twisting gears 20 rotate synchronously under the drive of the drive unit 30 and each drives two yarn-twisting threads 24 to form a spiral weave opening 25. The two yarn-twisting threads 24 passing through the same yarn-twisting gear 20 are alternately raised above the warp and weft interlacing surface 50 under the guidance of the yarn guide ring 40, so that the weft yarn 51 passes through the spiral weave opening 25.

[0032] It should be noted that the warp and weft interlacing surface 50 refers to the plane through which the weft yarn passes under the drive of the jet stream, which is equivalent to the shuttle plane of a shuttle loom. When the gear rotates to the point where the line connecting the two yarn holes 21 is vertical, one of the selvage yarns 24 is raised above the warp and weft interlacing surface 50 under the guidance of the yarn guide ring 40, while the other selvage yarn 24 is located below the warp and weft interlacing surface 50. The two selvage yarns 24 form an open state, that is, a spiral weave 25 is formed. At the same time, the weft yarn passes through, and as the gear continues to rotate and the selvage yarn 24 moves synchronously with the warp yarn, a spiral selvage structure is formed.

[0033] It should be emphasized that the yarn guide ring 40 in this embodiment should be polished to ensure that the selvage yarn 24 can slide smoothly along the outer ring surface of the yarn guide ring 40 under the action of traction. Of course, it should be understood that the main purpose of the yarn guide ring 40 is to lift the highest point of the selvage yarn 24 to the warp and weft interlacing surface 50. Therefore, the selvage yarn 24 only needs to contact the upper part of the yarn guide ring 40 during the rotation of the gear. However, in order to avoid the yarn getting stuck, the yarn guide ring 40 adopts a closed ring structure.

[0034] In addition, since the selvage yarn 24 is driven by the air-jet loom, and in order to ensure the quality of the selvage, the selvage yarn 24 should maintain a certain tension. Therefore, in this embodiment, there needs to be a tension adjustment component between the yarn wheel 23 and the yarn frame 22, such as a top spring pressing against the yarn wheel 23, or a damping shaft on the yarn frame 22 for mounting the yarn wheel 23. These structures for achieving the unwinding tension of the yarn wheel 23 are common forms in the prior art, and will not be described in detail here.

[0035] The single-machine double-width fabric selvage device provided in this embodiment, compared with the prior art, has selvage yarns 24 on two yarn wheels 23 passing through two yarn holes 21 and then around the outer periphery of the guide ring 40, moving together with the warp yarns under the traction of the warp beam of the air-jet loom. During this movement, the drive unit 30 connected to the drive shaft of the air-jet loom drives the selvage gear 20 to rotate. The two selvage yarns 24, which pass through two yarn holes 21 symmetrically distributed on both sides of the gear center, intertwine with each other as the gear rotates. Furthermore, since the guide ring 40 can guide the selvage yarns 24 to rise above the warp and weft interlacing surface 50, the two selvage yarns 24 can... Two spiral weaves 25 are formed relative to the warp and weft interlacing surface 50, one above the other. By matching the gear speed and weft threading frequency, a weft yarn 51 can be passed through at the same time as each spiral weave 25 is formed to form a spiral edge structure. Since the two yarn-threading gears 20 mesh with each other and are provided with two corresponding yarn guide rings 40, two parallel spiral edge structures can be formed on the greige fabric during the operation of the air-jet loom. Two narrow width greige fabrics can be processed at one time by cutting along the position between the two spiral edge structures. This not only makes full use of the width of the air-jet loom and reduces equipment performance redundancy, but also enables single-machine double width greige fabric processing, thereby multiplying production efficiency.

[0036] In some embodiments, see Figure 2 and Figure 3 The yarn guide ring 40 is an elliptical ring with its major axis extending vertically, and a connecting frame 41 is provided on the inner ring surface of the yarn guide ring 40. The connecting frame 41 is connected to the fixed shaft 11, and at least part of the outer ring surface of the yarn guide ring 40 is used to abut against and guide the twisted edge yarn 24.

[0037] Specifically, in this embodiment, the extension ends of the two fixed shafts 11 are provided with connecting rods 111 extending toward each other, and the extension ends of the two connecting rods 111 are provided with support rods 112. The support rods 112 extend away from the yarn twisting gear 20 and are fixedly connected to the yarn guide ring 40.

[0038] The use of a vertically arranged elliptical ring minimizes the weft space occupied at its top, avoiding interference with the normal interlacing of warp and weft yarns 51. Simultaneously, the connecting rod 111 allows the two guide rings 40 to move closer together, reducing the weft spacing between the spiral weave openings 25 formed by the rotation of the two gears. This prevents excessively wide waste edges in the cut fabric due to excessive spacing. Furthermore, the support rod 112 creates a certain gap between the guide ring 40 and the gears, preventing excessive bending of the selvage yarn 24 and ensuring smooth sliding on the guide ring 40.

[0039] For some possible implementations, please refer to [link / reference]. Figure 3 The length of the minor axis of the ellipse of the yarn guide ring 40 is less than the distance between the two yarn holes 21 on the same yarn twisting gear 20; an elastic contact strip 12 is provided on the outer side of the two yarn guide rings 40 that are far apart from each other on the mounting frame 10, and the horizontal distance between the two elastic contact strips 12 and their respective adjacent fixed shafts 11 is less than half the distance between the two yarn holes 21 on the same yarn twisting gear 20; two sensors 13 are provided on the mounting frame 10, which are located on the sides of the two elastic contact strips 12 respectively. The elastic contact strips 12 are used to swing under the touch of the twisted yarn 24 to trigger the sensing signal of the sensor 13.

[0040] To ensure the smooth sliding of the selvage yarn 24 along the guide ring 40, the minor axis of the ellipse of the guide ring 40 is set to be smaller than the distance between the two threading holes 21. Since the guide ring 40 is fixed relative to the center of the gear by the connecting rod 111, when the gear rotates to a horizontal position, the selvage yarn 24 located outside the two guide rings 40 does not contact the guide rings 40, but rather abuts against the elastic contact strip 12, causing the elastic contact strip 12 to bend and triggering the sensing signal of the sensor 13. Specifically, the sensor 13 can be a counting sensor 13, and the elastic contact strip 12... Each bend of strip 12 triggers a count, thus allowing for the counting of weft threads. Furthermore, if the selvage yarn 24 breaks, the elastic strip 12 cannot be activated, and the sensor 13 will not be triggered. If both selvage yarns 24 break, the counting is completely interrupted. If only one selvage yarn 24 breaks, the count is halved. The sensor 13 can establish an electrical connection with the controller of the air-jet loom. When an abnormal counting occurs, the controller will issue an alarm and stop the machine, thereby achieving real-time monitoring of the selvage yarn 24, timely detection of yarn breaks, and prevention of continued operation after a yarn break, which would affect product quality.

[0041] In some embodiments, such as Figure 4 As shown, the yarn twisting gear 20 has two elastic support members 60 on its side wall away from the yarn guide ring 40. The two elastic support members 60 are respectively aligned with the two yarn threading holes 21. The two elastic support members 60 are used to elastically clamp and guide the two twisted edge yarns 24 into the corresponding yarn threading holes 21.

[0042] Specifically, see Figure 5 The elastic support 60 includes a support base 61 and an elastic clamp 62; wherein, the support base 61 is fixedly connected to the side wall of the yarn twisting gear 20 and axially aligned with the yarn threading hole 21, and is used to guide the twisted edge yarn 24 into the yarn threading hole 21; the elastic clamp 62 is provided on the support base 61 and is used to elastically clamp the twisted edge yarn 24.

[0043] During gear rotation, the selvage yarn 24 becomes slack as it travels along the guide ring 40 from the long axis to the short axis due to the shortened path. Although the conventional yarn frame 22 and yarn wheel 23 have tension unwinding capabilities, they do not have rewinding capabilities. Therefore, the slack selvage yarn 24 is prone to snagging on surrounding components, causing interruptions in operation. Therefore, an elastic support 60 is provided to support the selvage yarn 24. On the one hand, this smoothly guides the selvage yarn 24 into the threading hole 21; on the other hand, the elastic clamping force can reverse the tension of the slack selvage yarn 24, ensuring that the selvage yarn 24 remains taut after passing through the threading hole 21. This not only ensures a smooth and efficient guiding path for the selvage yarn 24 by the guide ring 40 but also prevents the slack selvage yarn 24 from snagging on surrounding components, thus affecting normal selvage operation.

[0044] Optionally, in this embodiment, the support base 61 includes a fixing ring 611, a plurality of conical spiral spring pieces 612, and a connecting plate 613; wherein, the fixing ring 611 is attached and fixed to the side wall of the yarn twisting gear 20 and is coaxial with the yarn threading hole 21; the plurality of conical spiral spring pieces 612 are distributed circumferentially along the fixing ring 611, and the large diameter end of each conical spiral spring piece 612 is fixedly connected to the fixing ring 611; the connecting plate 613 is coaxially arranged with the fixing ring 611 and is fixedly connected together with the small diameter end of each conical spiral spring piece 612; the center of the connecting plate 613 is provided with a yarn guide sleeve 6131 suitable for the twisted yarn 24 to pass through, and the elastic wire clamp 62 is provided on the connecting plate 613.

[0045] The main function of the support seat 61 is to apply tension to the selvage yarn 24 along the axial direction of the threading hole 21. Conventional helical spring structures have insufficient elastic force stability in the axial direction and are prone to radial vibration. Therefore, multiple conical helical springs 612 are combined to form a multi-head conical helical structure, thereby improving the radial support strength of the connecting disc 613 connected to the small diameter end of the conical helical spring 612, reducing or even eliminating radial vibration, thereby ensuring the stability of the elastic clamp 62 connected to the connecting disc 613, preventing the selvage yarn 24 from shaking excessively and becoming tangled, and improving the smoothness of the selvage operation.

[0046] Figure 5 The above-mentioned elastic clamp 62 is used in a specific embodiment. The elastic clamp 62 includes two ear plates 621, a yarn threading shaft 622, two clamping pieces 623, and two elastic elements 624. The two ear plates 621 are disposed on the connecting plate 613 and are symmetrically distributed on both sides of the yarn guide sleeve 6131. ​​The two ends of the yarn threading shaft 622 are respectively connected to the two ear plates 621. The peripheral wall of the yarn threading shaft 622 has a through hole 6221 along its radial direction suitable for the twisted yarn 24 to pass through. The through hole 6221 is axially aligned with the yarn guide sleeve 6131. ​​The two clamping pieces 623 are slidably sleeved on the yarn threading shaft 622 and are respectively located on both sides of the through hole 6221. The two elastic elements 624 are sleeved on the yarn threading shaft 622 and are respectively located between the two clamping pieces 623 and the two ear plates 621, for the two clamping pieces 623 to apply an elastic clamping force to the twisted yarn 24.

[0047] The elastic element 624 can be a spring or a disc spring. Here, two elastic elements 624 are used to push the two clamping pieces 623 respectively, so that the two clamping pieces 623 elastically clamp the twisted edge yarn 24. Under the elastic clamping state, the twisted edge yarn 24 can smoothly enter the yarn guide sleeve 6131 under the action of forward traction force. At the same time, the elastic clamping force on the twisted edge yarn 24 keeps the conical spiral spring 612 in a compressed state. When the twisted edge yarn 24 relaxes, the conical spiral spring 612 rebounds and re-tensions the twisted edge yarn 24, resulting in high instantaneous response.

[0048] In addition, in order to improve the clamping stability of the two clamping pieces 623 on the twisted edge yarn 24, smooth grooves can be provided on the opposite wall surfaces of the two clamping pieces 623. The grooves are used to limit the twisted edge yarn 24, so that the twisted edge yarn 24 can pass smoothly through the through hole 6221 on the yarn threading shaft 622 along the groove, avoiding the twisted edge yarn 24 from getting stuck or breaking due to excessive tension.

[0049] It should be noted that, see Figure 1In this embodiment, the drive unit 30 includes a rotating shaft 31, an input gear 32, and an output gear 33. The rotating shaft 31 is rotatably connected to the mounting frame 10 along the axial direction of the fixed shaft 11. The input gear 32 is sleeved on the rotating shaft 31 and is connected to the drive shaft of the air-jet loom. The output gear 33 is sleeved on the rotating shaft 31 and meshes with one of the yarn-twisting gears 20. The input gear 32 drives the drive shaft in a one-to-one ratio, and the output gear 33 drives the yarn-twisting gear 20 in a one-to-two ratio.

[0050] It should be understood that for an air-jet loom, the drive shaft performs one weft insertion per revolution. Therefore, the input gear 32 is connected to the drive shaft with a 1:1 gear transmission, while the output gear 33 has a 1:2 gear ratio with the selvage gear. This results in a 1:2 transmission ratio between the drive shaft and the selvage gear 20. In other words, the interval between two weft insertions in the air-jet loom is half a revolution of the selvage gear 20. Each revolution of the selvage gear 20 causes two selvage yarns 24 to interweave under the drive of the threading hole 21, forming two threaded weft openings. Therefore, the selvage gear 20 is connected to the drive shaft for transmission, ensuring that a weft yarn 51 passes through each time a threaded weft opening is formed. This results in the formation of a threaded selvage structure simultaneously with normal warp and weft interweaving, resulting in high operational precision.

[0051] Based on the same inventive concept, please combine Figures 1 to 5 It is understood that this application embodiment also provides an air-jet loom, including a loom body 70, a dividing device 80, and the above-mentioned single-machine double-width fabric selvage device; the dividing device 80 is fixedly connected to the loom body 70 and is used to cut the fabric along the middle position of the fabric; the two spiral weave openings 25 formed by the single-machine double-width fabric selvage device are respectively located on both sides of the dividing device 80.

[0052] It should be noted that the dividing device 80 can be a structure in which the blade is set on the bracket connected to the loom body 70, and the blade is aligned with the position between the two threaded selvage structures to cut the greige fabric; in addition, it should be understood that there is no need to set the warp yarn between the two threaded selvage structures, so the cutting process is actually cutting each weft yarn 51, thereby reducing waste.

[0053] Compared with the prior art, the air-jet loom provided by the present invention can form two spiral helix structures on the fabric through the above-mentioned single-machine double-width fabric helix device, and then use the dividing device 80 to separate the fabric from the two spiral helix structures, thereby realizing the processing of single-machine double-width fabric. This not only makes full use of the width of the air-jet loom to reduce equipment performance redundancy, but also enables the processing of single-machine double-width fabric, thereby multiplying production efficiency.

[0054] 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, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A single-machine double-width fabric sewing device, characterized in that, include: A mounting bracket is used to fix it to the machine frame and is located below the warp yarn. Two fixed shafts extending along the travel direction of the warp yarn are horizontally spaced on the mounting bracket. Two yarn-twisting gears are respectively rotatably mounted on the two fixed shafts and mesh with each other. Each yarn-twisting gear has two yarn-passing holes symmetrically distributed along its center. Each yarn-twisting gear has two yarn frames on the side opposite to the weaving opening of the air-jet loom. The two yarn frames are respectively equipped with yarn wheels. The selvage yarn wound on the two yarn wheels passes through the two yarn-passing holes respectively. The drive unit, mounted on the mounting frame, has an input end that is connected to the drive shaft of the air-jet loom and an output end that meshes with one of the yarn-twisting gears. Two yarn guide rings are respectively connected to the extended ends of the two fixed shafts and are located on the side of the yarn guide gear away from the yarn frame. The top of the yarn guide ring is higher than the warp and weft interlacing surface. The yarn guide ring is an elliptical ring with its major axis extending in the vertical direction. A connecting frame is provided on the inner ring surface of the yarn guide ring. The connecting frame is connected to the fixed shaft. At least a portion of the outer ring surface of the yarn guide ring is used to abut and guide the yarn guide. The two yarn-twisting gears rotate synchronously under the drive of the driving member, each driving two yarn-twisting threads to form a spiral weave. The two yarn-twisting threads passing through the same yarn-twisting gear are alternately raised above the warp and weft interlacing surface under the guidance of the yarn guide ring, so that the weft yarn passes through the spiral weave. Two elastic support members are provided on the side wall of the yarn-twisting gear away from the yarn guide ring. The elastic support members include a support base and an elastic thread clamp. The support base is used to apply tension to the yarn-twisting threads along the axial direction of the threading hole.

2. The single-machine double-width fabric sewing device as described in claim 1, characterized in that, Each of the two fixed shafts has a connecting rod extending toward each other at its extended end, and each of the two connecting rods has a support rod at its extended end. The support rod extends away from the yarn twisting gear and is fixedly connected to the yarn guide ring.

3. The single-machine double-width fabric sewing device as described in claim 2, characterized in that, The length of the minor axis of the ellipse of the yarn guide ring is less than the distance between the two yarn-threading holes on the same yarn-threading gear; an elastic contact strip is provided on the outer side of the two yarn guide rings on the mounting frame, and the horizontal distance between the two elastic contact strips and their respective adjacent fixed shafts is less than half the distance between the two yarn-threading holes on the same yarn-threading gear; two sensors are provided on the mounting frame, respectively located on the sides of the two elastic contact strips, and the elastic contact strips are used to swing under the touch of the twisted yarn to trigger the sensor's sensing signal.

4. The single-machine double-width fabric sewing device as described in claim 1, characterized in that, The two elastic supports are respectively aligned with the two threading holes; wherein the two elastic supports are respectively used to elastically clamp and guide the two twisted selvage yarns into the corresponding threading holes.

5. The single-machine double-width fabric sewing device as described in claim 4, characterized in that, The support base is fixedly connected to the side wall of the yarn-twisting gear and axially aligned with the yarn-threading hole, for guiding the twisted edge yarn into the yarn-threading hole; the elastic thread is clamped on the support base for elastically holding the twisted edge yarn.

6. The single-machine double-width fabric sewing device as described in claim 5, characterized in that, The support base includes: A retaining ring is attached and fixed to the side wall of the yarn-twisting gear and is coaxial with the yarn-threading hole; Multiple conical spiral springs are distributed at intervals along the circumference of the fixed ring, and the large-diameter end of each conical spiral spring is fixedly connected to the fixed ring; The connecting disc is coaxially arranged with the fixing ring and is fixedly connected to the small diameter end of each of the conical spiral spring pieces; The connecting disc has a yarn guide sleeve at its center, which is suitable for the twisted yarn to pass through, and the elastic thread is clamped on the connecting disc.

7. The single-machine double-width fabric sewing device as described in claim 6, characterized in that, The elastic clamp includes: Two ear plates are provided on the connecting plate and are symmetrically distributed on both sides of the yarn guide sleeve; The yarn threading shaft is connected to the two ear plates at both ends. The peripheral wall of the yarn threading shaft is provided with a through hole along its radial direction to facilitate the passage of the twisted yarn. The through hole is axially aligned with the yarn guide sleeve. Two clips are slidably fitted onto the threading shaft and are located on both sides of the through hole, respectively; Two elastic elements are sleeved on the yarn threading shaft and are respectively located between the two clamping pieces and the two ear plates, for applying an elastic clamping force to the twisted yarn by the two clamping pieces.

8. The single-machine double-width fabric sewing device as described in any one of claims 1-7, characterized in that, The driving component includes: A rotating shaft is rotatably connected to the mounting bracket along the axial direction of the fixed shaft; An input gear is fitted onto the rotating shaft and is connected to the drive shaft of the air-jet loom. An output gear is sleeved on the rotating shaft and meshes with one of the yarn twisting gears; The input gear drives the drive shaft in a 1:1 ratio, and the output gear drives the yarn twisting gear in a 1:2 ratio.

9. An air-jet loom, characterized in that, include: Loom body; A cutting device, fixedly connected to the loom body, is used to cut the greige fabric along the middle position of the greige fabric; as well as The single-machine double-width fabric sewing device as described in any one of claims 1-8; The two spiral weave openings formed by the single-machine double-width fabric selvage device are located on both sides of the dividing device.

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