Whole-width weft insertion warp knitting machine weft laying device with yarn selection function and yarn selection method of full-width weft insertion warp knitting machine weft laying device

Abstract

The invention relates to a full-width weft insertion warp knitting machine weft laying device with a yarn selection function and a yarn selection method of the full-width weft insertion warp knitting machine, and belongs to the technical field of textile equipment and weaving. The yarn selection method of the full-width weft insertion warp knitting machine comprises the steps that S100, various cheese yarns of different colors placed on a creel sequentially pass through a yarn guide bar and a tension regulator, and then are subjected to yarn laying; yarns penetrate into the weft selector main body from the plurality of yarn penetrating holes; and S200, through processing of the controller, the directions of the positive pole and the negative pole of the power supply are changed, so that the magnetic N pole and the magnetic S pole of the solenoid are changed, the electromagnet connected with the weft feeding rod generates attraction or repulsion, and the needed weft yarn is selected. According to the invention, the weft laying device of the full-width weft insertion warp knitting machine has a yarn selection function.

Description

Technical Field

[0001] This invention application relates to the technical fields of textile equipment and weaving technology, in particular to a weft laying device and its weft selection method for a full-width weft insertion warp knitting machine with weft selection function. Background Art

[0002] Traditional full-width weft insertion warp knitting machines mostly rely on the passive unwinding process, and the yarn is transported by mechanical pulling, resulting in too high and significantly fluctuating pre-tension of the yarn, which is only suitable for high-strength and high-rigidity yarns. For low-strength or elastic yarns, excessive tension is likely to cause yarn deformation, fabric shrinkage and even breakage, seriously affecting product quality.

[0003] With the diversified development of the functions of industrial textiles, it is necessary to dynamically switch weft yarns of different materials and functions (such as elastic filaments, metal yarns, etc.) during the same weaving process. However, traditional equipment relies on manual or simple mechanical switching, making it difficult to achieve real-time and precise control, which restricts the expansion of fabric functionality and the improvement of production efficiency. The existing tension control mechanism of the weft laying device lacks closed-loop feedback, and problems such as uneven yarn tension, yarn breakage or deviation frequently occur during high-speed operation, resulting in an increase in the defect rate; at the same time, the complex reversing mechanism and the design of the passive yarn feeding path cause serious yarn waste, high energy consumption of the equipment, and low modularity, making it difficult to meet the flexible production requirements of small-batch and multi-variety orders. Summary of the Invention

[0004] The purpose of this invention application is to overcome the defects existing in the prior art, and provides a weft laying device and its weft selection method for a full-width weft insertion warp knitting machine with weft selection function. To achieve the above purpose, the following technical solutions are provided in this invention application:

[0005] In the first aspect, this invention application provides a weft laying device for a full-width weft insertion warp knitting machine with weft selection function, including: a yarn rack, a guide rod is installed above the cheese yarn on the yarn rack, a tension regulator is installed on the yarn rack, a weft selector main body is installed on the right side of the tension regulator, the weft selector main body is provided with a yarn passing hole, a weft feeding rod is arranged on the front side of the weft selector main body, a first electromagnetic device is installed on the rear side of the weft selector main body, a wire is installed on the weft selector main body, one end of the wire is connected to a controller, and the other end is connected to the first electromagnetic device. The first electromagnetic device includes a wire, a solenoid and a power supply. The wire is wound around the solenoid, and both sides of the wire are connected to the power supply. The right side of the solenoid is an electromagnet, and the electromagnet is connected to the weft feeding rod.

[0006] Optionally, clamping mechanisms are respectively installed on both sides of the weft laying device. The clamping mechanism includes a connecting piece, a clamping base, a flexible pressure roller, a cantilever, a rotating shaft hole, a displacement rod, a return spring, and a second electromagnetic device. The clamping base is installed on the weft laying device through a plurality of connecting pieces. A flexible pressure roller with a connecting rod is installed above the clamping base. The flexible pressure roller with the connecting rod is connected to the cantilever through the rotating shaft hole. A second electromagnetic device is installed above the cantilever. A displacement rod is installed on the front side of the second electromagnetic device. A return spring is connected to the front side of the displacement rod, and the return spring is connected to the flexible pressure roller with the connecting rod. The second electromagnetic device drives the displacement rod to move, and the movement of the displacement rod drives the flexible pressure roller with the connecting rod to press on the clamping base.

[0007] Optionally, the bottom of the weft insertion mechanism is an installation base plate. The weft insertion mechanism is installed below the weft laying carriage. The top of the weft insertion mechanism is an installation cover plate. A first clamping jaw and a second clamping jaw are installed at the front end of the weft insertion mechanism. The right sides of the first clamping jaw and the second clamping jaw are connected to a driving slide plate. The right side of the driving slide plate is connected to a driving cylinder. The driving cylinder drives the first clamping jaw and the second clamping jaw to clamp the yarn.

[0008] Optionally, a first shearing mechanism and a second shearing mechanism are respectively installed on both sides of the weft laying device. Both the first shearing mechanism and the second shearing mechanism include a blade, an upper plate, and a lower plate. The blade is connected to the upper plate. A groove is provided on the lower plate. The blade is used to cut the yarn located above the groove.

[0009] Optionally, the second electromagnetic device and the first electromagnetic device have the same structure. The weft laying carriage drives the weft insertion mechanism to make a reciprocating motion.

[0010] Optionally, the weft laying device of a full-width weft insertion warp knitting machine with a yarn selection function further includes a yarn pressing device and a suction cup electromagnet. The upper end of the yarn pressing device is made of iron, and the lower end is made of ceramic to avoid friction. The suction cup electromagnet is energized to attract the yarn pressing device upward. When the suction cup electromagnet is de-energized, the yarn pressing device drops to clamp the yarn.

[0011] Optionally, the electromagnet is higher than the weft feeding rod.

[0012] In a second aspect, the present invention application provides a yarn selection method for a weft laying device of a full-width weft insertion warp knitting machine. The method uses a weft laying device of a full-width weft insertion warp knitting machine with a yarn selection function according to any one of the first aspects above, and includes:

[0013] Step S100, multiple bobbin yarns of different types and colors placed on the yarn rack pass through the yarn guide rod and the tension regulator in sequence, and the yarns are threaded into the weft selector main body through a plurality of yarn threading holes.

[0014] Step S200: After being processed by the controller, the direction of the positive and negative power supply poles is changed, so that the magnetic N and S poles of the solenoid change, and the magnet connected to the weft feeder rod generates attraction or repulsion to select the required weft yarn.

[0015] Optionally, after step S200, it further includes:

[0016] Step S300: When the selection of the required weft yarn is completed, the yarn presser drops to hold the selected weft yarn. When the weft feeder rod reaches the specified position, the suction cup electromagnet sucks up the yarn presser. Then, the selected weft yarn is clamped by the first jaw and the second jaw of the weft insertion mechanism under the weft laying carriage, so as to lead the weft yarn from one side to the other side;

[0017] Step S400: When the weft laying carriage reaches the other side, the second electromagnetic device starts to work, generating a repulsive force with the magnet connected to the displacement rod, thereby pushing the flexible pressure roller to press the yarn on the clamping base. Then, the first shearing mechanism and the second shearing mechanism on both sides of the weft laying device work simultaneously to cut off the yarn at both ends. The weft laying carriage drives the weft insertion mechanism to move back. During the process of the weft insertion mechanism moving back, the weft selector main body selects the next weft yarn.

[0018] In summary, the present invention application has the following beneficial technical effects:

[0019] (1) In the present invention application, the controller can adopt a PLC control system and multiple groups of weft yarn conveying mechanisms, and can switch different types of weft yarns (such as FDY, DTY, metal yarns, etc.) in real time. There is no need to stop the machine when switching yarns, reducing the production interruption time, enhancing the design flexibility of the fabric, and by increasing the number of bobbins and the number of weft selector main bodies, multiple groups of different weft insertion yarns can be selected simultaneously, and the machine production efficiency is high.

[0020] (2) In the present invention application, the yarn selection mechanism is small in size and simple to install, and can be refitted on the basis of the original weft laying device, reducing the transformation cost of the warp knitting full-width weft insertion equipment and the demand for skilled workers, alleviating the labor cost pressure and at the same time increasing the profit margin of equipment sales. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of a weft laying device of a full-width weft insertion warp knitting machine with a yarn selection function according to the present invention application;

[0022] Figure 2 is a schematic structural diagram of the weft selector main body according to the present invention application;

[0023] Figure 3 is a schematic structural diagram of the first electromagnetic device, the suction cup electromagnet, the yarn presser and the yarn feeding rod according to the present invention application;

[0024] Figure 4It is a schematic structural diagram of the sucker electromagnet and the yarn pressing device of the present invention application.

[0025] Figure 5 It is a schematic structural diagram of the clamping mechanism of the present invention application;

[0026] Figure 6 It is a schematic structural diagram of the weft insertion mechanism of the present invention application;

[0027] Figure 7 It is a schematic structural diagram of the shearing mechanism of the present invention application;

[0028] Figure 8 It is a schematic diagram of the yarn selection movement of the weft laying device of the full-width warp knitting machine with yarn selection function of the present invention application Figure 1 ;

[0029] Figure 9 It is a schematic diagram of the yarn selection movement of the weft laying device of the full-width warp knitting machine with yarn selection function of the present invention application Figure 2 ;

[0030] Figure 10 It is a schematic diagram of the yarn selection movement of the weft laying device of the full-width warp knitting machine with yarn selection function of the present invention application Figure 3 ;

[0031] Figure 11 It is a schematic diagram of the yarn selection movement of the weft laying device of the full-width warp knitting machine with yarn selection function of the present invention application Figure 4 。

[0032] Reference numerals:

[0033] 1 - yarn rack, 2 - yarn guiding rod, 3 - tension regulator, 4 - weft selector, 5 - clamping mechanism, 6 - weft insertion mechanism, 7 - weft laying carriage, 8 - controller, 9 - wire, 91 - conducting wire, 10 - first shearing mechanism, 11 - second shearing mechanism, 101 - blade, 102 - groove, 103 - lower plate, 104 - upper plate, 12 - yarn pressing device, 13 - sucker electromagnet, 41 - weft supply rod, 411 - electromagnet, 42 - yarn threading hole, 43 - first electromagnetic device, 58 - second electromagnetic device, 431 - solenoid, 51 - fixing bolt, 52 - clamping base, 53 - flexible pressure roller, 54 - cantilever, 55 - rotating shaft hole, 56 - displacement rod, 57 - return spring, 61 - mounting base plate, 62 - driving cylinder, 63 - first jaw, 64 - second jaw, 65 - driving slide plate, 66 - mounting cover plate, 67 - clamping surface. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0035] Among them, the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings of the specification of the present application, and the words "bottom surface" and "top surface", "inner" and "outer" respectively refer to facing or away from a specific component. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the specification of the present application, "a plurality" means two or more, and steps S100, step S200, step S300 and step S400 do not represent a specific order.

[0036] In a first aspect, as Figures 1 to 11 shown, a weft laying device of a full-width weft insertion warp knitting machine with a yarn selection function includes a yarn rack 1. A yarn guiding rod 2 is installed above the cheese yarn on the yarn rack 1. The yarn rack 1 is equipped with a tension regulator 3. A weft selector main body 4 is installed on the right side of the tension regulator. The weft selector main body 4 is provided with a yarn passing hole 42. A weft feeding rod 41 is arranged on the front side of the weft selector main body 4. A first electromagnetic device 43 is installed on the rear side of the weft selector main body 4. A conducting wire 9 is installed on the weft selector main body 4. One end of the conducting wire 9 is connected to a controller 8, and the other end is connected to the first electromagnetic device 43. The first electromagnetic device 43 includes a conducting wire 91, a solenoid 431 and a power supply 432. The conducting wire 91 is wound around the solenoid 431. Both sides of the conducting wire 91 are connected to the power supply 432. The right side of the solenoid 431 is an electromagnet 411. The electromagnet 411 is connected to the weft feeding rod 41.

[0037] In some embodiments, the movement of the weft feeding rod is controlled by a first electromagnetic device (including a conducting wire, a solenoid and an electromagnet) to achieve precise selection of the yarn. The fast response characteristic of the electromagnet enables rapid yarn switching, which can meet the requirements of producing complex patterns or diversified fabrics. The yarn selection function allows different types, colors or materials of yarns to be selected according to design requirements, enhancing the diversity and functionality of the fabric.

[0038] In some embodiments, the tension regulator ensures that the yarn maintains an appropriate tension during the conveying and knitting processes, avoiding yarn breakage or slack, thereby ensuring the uniformity and high quality of the fabric and reducing defects in production. Components such as the yarn creel, yarn guide rod, tension regulator, and weft selector body are closely combined, with a compact overall structure, small space occupation, and easy installation on a full-width weft insertion warp knitting machine. Installation and disassembly are also very convenient, contributing to the upgrade and daily maintenance of the weft laying device.

[0039] In some embodiments, first, a controller is equipped and connected to the first electromagnetic device through a wire to achieve the automation of the yarn selection process. The controller can preset programs to automatically complete the selection and conveying of the yarn, significantly improving production efficiency. The automated control reduces the errors of manual operations, ensuring the accuracy of each yarn selection and the stability of the fabric quality. Additionally, the controller can adopt a PLC control system and use multiple sets of weft yarn conveying mechanisms to be able to switch different types of weft yarns (such as FDY, DTY, metal yarns, etc.) in real time without stopping the machine during the yarn switching process, reducing the production interruption time, enhancing the design flexibility of the fabric, and being able to select multiple sets of different weft insertion yarns simultaneously by increasing the number of bobbins and the number of weft selector bodies, resulting in high machine production efficiency.

[0040] In the application of the present invention, the weft laying device of the full-width weft insertion warp knitting machine with the yarn selection function can be applicable to the production of various types of warp knitted fabrics, especially suitable for scenarios that require frequent yarn switching or the production of complex patterns, capable of improving production efficiency and fabric quality, and enhancing the production adaptability of the warp knitting machine.

[0041] Optionally, clamping mechanisms 5 are respectively installed on both sides of the weft laying device. The clamping mechanism 5 includes a connecting member 51, a clamping base 52, a flexible pressure roller 53, a cantilever 54, a rotating shaft hole 55, a displacement rod 56, a return spring 57, and a second electromagnetic device 58. The clamping base 52 is installed on the weft laying device through multiple connecting members 51. A flexible pressure roller 53 with a connecting rod is installed above the clamping base 52. The flexible pressure roller 53 with the connecting rod is connected to the cantilever 54 through the rotating shaft hole 55. A second electromagnetic device 58 is installed above the cantilever 54. A displacement rod 56 is installed on the front side of the second electromagnetic device 58. The front side of the displacement rod is connected to the return spring 57, and the return spring 57 is connected to the flexible pressure roller 53 with the connecting rod. The second electromagnetic device 58 drives the displacement rod 56 to move, and the movement of the displacement rod 56 drives the flexible pressure roller 53 with the connecting rod to press on the clamping base 52.

[0042] In some embodiments, the clamping mechanism drives the displacement rod 56 to move through the second electromagnetic device 58, thereby controlling the rapid pressing down or releasing of the flexible pressing roller 53. This electromagnetic driving method has a fast response speed and can quickly clamp and release the yarn or fabric during the weaving process, ensuring the accuracy and stability of yarn feeding, improving production efficiency; at the same time, the design of the flexible pressing roller 53 enables it to adapt to yarns or fabrics of different thicknesses and materials, providing a uniform and gentle clamping force. This characteristic not only avoids damaging the yarn but also ensures the firmness of clamping, suitable for various weaving requirements. Moreover, the flexible pressing roller 53 can be connected to the cantilever 54 through the rotating shaft hole 55, and the setting of the cantilever 54 enables it to move flexibly. This structural design enables the flexible pressing roller 53 to adjust its position and angle according to different clamping requirements, enhancing the applicability and operation flexibility of the clamping mechanism.

[0043] In some embodiments, the return spring 57 is connected between the displacement rod 56 and the flexible pressing roller 53. When the clamping mechanism is not working, the return spring 57 can automatically reset the flexible pressing roller 53, avoiding applying unnecessary pressure to the yarn or fabric, protecting the yarn and extending the service life of the equipment; at the same time, the clamping base 52 is installed on the weft laying device through a plurality of connecting pieces 51, with modular characteristics, facilitating the installation, disassembly and maintenance of the clamping mechanism, reducing the maintenance cost and downtime of the equipment, and improving the operability of the equipment.

[0044] In the present invention application, the fast response and precise clamping ability of the clamping mechanism ensure the stability and tension control of the yarn during the weaving process. This stability helps to reduce fabric defects and improve the production efficiency of the warp knitting machine and the quality of the final fabric.

[0045] Optionally, the bottom of the weft insertion mechanism 6 is the mounting base plate 61, the weft insertion mechanism 6 is installed below the weft laying carriage 7, the top of the weft insertion mechanism 6 is the mounting cover plate 66, the front end of the weft insertion mechanism 6 is installed with a first jaw 63 and a second jaw 64, the right sides of the first jaw 63 and the second jaw 64 are connected to the driving slide plate 65, and the right side of the driving slide plate 65 is connected to the driving cylinder 62. The driving cylinder 62 drives the first jaw 63 and the second jaw 64 to clamp the yarn.

[0046] In some embodiments, the weft insertion mechanism 6 is fixed below the weft laying carriage 7 through the mounting base plate 61 and uses the mounting cover plate 66 as the top. The overall structural design is compact and occupies little space. This design is convenient for installation and use on a full-width weft insertion warp knitting machine, especially suitable for production environments with limited equipment space.

[0047] In some embodiments, the driving slide plate 65 can be rotationally engaged with the first jaw 63 and the second jaw 64. The right side of the driving cylinder 62 is connected to the driving slide plate 65. Thus, the driving cylinder 62 controls the opening and closing of the first jaw 63 and the second jaw 64 through the driving slide plate 65, and the operation process is simple and fast. The jaws can quickly grip and release the yarn, greatly improving the production efficiency and reducing the complexity of manual operation at the same time. The design of the first jaw 63 and the second jaw 64 can firmly grip the yarn, ensuring that the tension and position of the yarn are accurate during the knitting process. This stability effectively avoids the problems of yarn loosening or misalignment, thus ensuring the uniformity and quality of the fabric.

[0048] In the application of the present invention, the weft insertion mechanism 6 has a simple structure, is easy to disassemble, replace and maintain, reducing the maintenance cost and downtime of the equipment. By automatically controlling the opening and closing of the jaws through the driving cylinder 62, the weft insertion mechanism 6 realizes the automation of the weft insertion process, reduces manual intervention, provides strong support for the efficient and stable operation of the full-width weft insertion warp knitting machine, and significantly improves the performance and production efficiency of the equipment.

[0049] Optionally, a first shearing mechanism 10 and a second shearing mechanism 11 are respectively installed on both sides of the weft laying device. Both the first shearing mechanism 10 and the second shearing mechanism 11 include a blade 101, an upper plate 104 and a lower plate 103. The blade 101 is connected to the upper plate 104, and a groove 102 is provided on the lower plate 103. The blade 101 is used to cut the yarn located above the groove 102.

[0050] In the application of the present invention, first, the first jaw 63 and the second jaw 64 of the weft insertion mechanism 6 grip the weft yarn and lead it from one side to the other side. When the flexible pressure rollers 53 on both sides press down the first jaw 63 and the second jaw 64 to grip the yarn, both the first shearing mechanism 10 and the second shearing mechanism 11 work. The yarn is clamped by the upper plate 103 and the lower plate 104, and the blade 101 is used to cut the yarn located above the groove 102. The blade 101 can be telescopic, or the first shearing mechanism 10 and the second shearing mechanism 11 can also be a conventional scissor mechanism; in addition, the flexible pressure roller 53 is pressed down under the drive of the second electromagnetic device 58, firmly pressing the yarn on the clamping base 52, ensuring the stability of the yarn during shearing and avoiding the shaking or displacement of the yarn during the shearing process. After the shearing is completed, the flexible pressure roller 53 and the jaws are released, and the weft laying trolley 7 drives the weft insertion mechanism 6 to return, preparing for the next weft laying, ensuring the smoothness and efficiency of the entire weft laying and shearing process.

[0051] Optionally, the second electromagnetic device and the first electromagnetic device have the same structure, and the weft laying trolley 7 drives the weft insertion mechanism 6 to make a reciprocating motion.

[0052] In the application of the present invention, the second electromagnetic device has the same structure as the first electromagnetic device, making the production process more unified and the parts more universal during maintenance, thus reducing the operation complexity and cost. The weft laying trolley 7 drives the weft insertion mechanism 6 to reciprocate, realizing precise control of the weft insertion operation, being able to adapt to different knitting requirements, and improving the fabric quality and production efficiency.

[0053] Optionally, the weft laying device of the full-width weft insertion warp knitting machine with the yarn selection function further includes a yarn pressing device 12 and a sucker electromagnet 13. The upper end of the yarn pressing device 12 is made of iron, and the lower end is made of ceramic to avoid friction. The sucker electromagnet 13 is energized to attract the yarn pressing device 12 upward, and when the sucker electromagnet 13 is de-energized, the yarn pressing device 12 drops to clamp the yarn.

[0054] In the application of the present invention, the upper end of the yarn pressing device 12 is made of iron, which is convenient for the electromagnet to attract, and the lower end is made of ceramic to avoid friction with the yarn and reduce wear, thereby extending the service life of the equipment. The sucker electromagnet 13 controls the up and down movement of the yarn pressing device 12 by energizing and de-energizing. When energized, it attracts the yarn pressing device 12 upward, and when de-energized, the yarn pressing device 12 drops to clamp the yarn. This method has a fast response and is reliable, can precisely control the yarn, improves the production efficiency, is also convenient for maintenance and replacement, and reduces the operation and maintenance costs.

[0055] Optionally, the electromagnet 411 is higher than the weft feeding rod 41.

[0056] In the application of the present invention, the electromagnet 411 is higher than the weft feeding rod 41. Furthermore, it can ensure that by controlling the energization and de-energization of the electromagnet 411, the movement of the weft feeding rod 41 can be controlled. The response speed is fast. This design has high flexibility and can precisely control the movement of the weft feeding rod 41 by adjusting the position and parameters of the electromagnet 411 to meet the requirements of various knitting processes.

[0057] In the second aspect, the application of the present invention provides a yarn selection method for the weft laying device of a full-width weft insertion warp knitting machine, using any one of the weft laying devices of a full-width weft insertion warp knitting machine with the yarn selection function described in the first aspect above, including:

[0058] It should be noted that the yarn selection method for the weft laying device of a full-width weft insertion warp knitting machine in the application of the present invention includes any one of the weft laying devices of a full-width weft insertion warp knitting machine with the yarn selection function in the first aspect. Correspondingly, it also includes all the technical problems, technical solutions, and technical effects recorded in any one of the weft laying devices of a full-width weft insertion warp knitting machine with the yarn selection function in the first aspect. The application of the present invention will not elaborate on this here.

[0059] Step S100, multiple bobbin yarns of different types and colors placed on the yarn rack 1 pass through the yarn guiding rod 2 and the tension regulator 3 in sequence, and the yarns are threaded into the weft selector main body 4 through a plurality of yarn threading holes 42.

[0060] Step S200: After being processed by the controller, the positive and negative directions of the power supply 432 are changed, so that the magnetic N and S poles of the solenoid 431 are transformed, and the electromagnet connected to the weft feed rod 41 generates attraction or repulsion to select the required weft yarn.

[0061] In some embodiments, in step S100, first, a variety of (for example, eight kinds of) yarns are neatly placed on the yarn rack, and the yarns are guided into the weft selector through the yarn guide rod and the tension regulator to ensure a stable yarn conveying process and not easy to be chaotic. This order helps to reduce the problems of yarn entanglement or misalignment; in addition, the tension regulator can keep the tension uniform during the yarn conveying process, avoiding the situation of yarn slack or over-tightening. This uniform tension control can significantly improve the quality of the fabric and reduce defects; in addition, after the yarns are threaded into the yarn threading holes 42, the weft selector can quickly respond to subsequent control instructions to select the required yarns, improving the continuity and efficiency of production.

[0062] In some embodiments, in step S200, first, the selection of the yarn is controlled by using the electromagnetic principle, with fast response speed and high precision. This mechanism can quickly and accurately switch different types of yarns to meet complex knitting requirements; in addition, by automatically processing the yarn selection process by the controller, manual intervention is greatly reduced, improving production efficiency and ensuring the consistency and reliability of operation; in addition, by simply changing the power supply direction, the yarn can be switched, enabling the weft laying device of the full-width weft insertion warp knitting machine with the yarn selection function to easily adapt to a variety of knitting requirements, improving the application range and production adaptability of the weft laying device of the full-width weft insertion warp knitting machine with the yarn selection function.

[0063] In the present invention application, through the designs of step S100 and step S200, an orderly yarn conveying, tension control and efficient automatic yarn selection mechanism can be realized, achieving fast and accurate weft yarn selection, providing strong support for an efficient and high-quality weaving process, and significantly improving the production efficiency, fabric quality and operation flexibility of the warp knitting machine.

[0064] Optionally, after step S200, it further includes:

[0065] Step S300: When the selection of the required weft yarn is completed, the yarn presser 12 drops to hold the selected weft yarn. When the weft feed rod 41 reaches the designated position, the suction cup electromagnet 13 sucks up the yarn presser 12, and then the selected weft yarn is clamped by the first jaw 63 and the second jaw 64 of the weft insertion mechanism 6 under the weft laying carriage 7, so as to lead the weft yarn from one side to the other side;

[0066] Step S400: When the weft laying trolley 7 reaches the other side, the second electromagnetic device 58 starts to work, generating a repulsive force against the magnet connected to the displacement rod 56, thereby pushing the flexible pressure roller 53 to press the yarn against the clamping base 52. Then, the first shearing mechanism 10 and the second shearing mechanism 11 on both sides of the weft laying device work simultaneously to cut off the two ends of the yarn. The weft laying trolley 7 drives the weft insertion mechanism 6 to move back. During the process of the weft insertion mechanism 6 moving back, the weft selector body 4 selects the next weft yarn.

[0067] In some embodiments, in step S300, after the required weft yarn is selected, the yarn pressing device 12 drops to hold the weft yarn. After the weft feeding rod 41 reaches the designated position, the suction cup electromagnet 13 sucks up the yarn pressing device 12. Subsequently, the first jaw 63 and the second jaw 64 of the weft insertion mechanism 6 clamp the weft yarn and lead it from one side to the other side. When the yarn pressing device 12 drops, it can accurately hold the selected weft yarn, ensuring the stable position of the yarn after selection and avoiding accidental movement or loosening. The suction cup electromagnet 13 precisely controls the suction and release of the yarn pressing device 12 through electromagnetic force, with fast response and reliable operation, improving the accuracy of the operation. The first jaw 63 and the second jaw 64 of the weft insertion mechanism 6 firmly clamp the weft yarn, ensuring the stability of the yarn tension and position during transportation and preventing the yarn from being misaligned or loosened.

[0068] In some embodiments, from the dropping of the yarn pressing device 12 to the suction of the suction cup electromagnet 13 and then to the clamping of the jaws, the whole process is completed through automated control, reducing manual intervention. The automated design improves production efficiency and at the same time reduces the risk of human operation errors, ensuring operation consistency and the stability of fabric quality. At the same time, the coordinated work of the yarn pressing device 12, the suction cup electromagnet 13, and the weft insertion mechanism 6 ensures the seamless connection of the weft yarn from selection to transportation, shortens the operation cycle, and improves the efficiency of the overall production process.

[0069] In some embodiments, in step S400, first of all, the second electromagnetic device 58 quickly pushes the flexible pressure roller 53 using magnetic force to achieve the rapid clamping of the yarn, greatly improving the operation efficiency. In addition, the flexible pressure roller 53 can adapt to different types of yarns, providing uniform clamping force to ensure that the yarn is firmly pressed against the clamping base 52, avoiding sliding or displacement. In addition, the first shearing mechanism 10 and the second shearing mechanism 11 work simultaneously to ensure that the two ends of the yarn are cut off synchronously. Synchronous shearing reduces the pulling of the yarn during the shearing process, protects the integrity of the yarn, and thus improves the fabric quality. In addition, during the process of the weft laying trolley 7 driving the weft insertion mechanism 6 to return, the weft selector body 4 has started to select the next weft yarn, realizing the continuity of the production process, reducing the downtime, optimizing the connection between the reciprocating movement of the weft laying trolley 7 and the yarn selection operation, and improving the utilization rate of the equipment and the overall production efficiency.

[0070] In the present invention application, through rapid response and automated control, the operation cycle is significantly shortened, production efficiency is improved, and precise clamping and conveying mechanisms ensure the stability of the yarn throughout the process, reducing fabric defects. The continuous design of the production process maximizes the equipment operation time, increases production capacity, and synchronous shearing and stable clamping effectively guarantee the neatness and quality of the fabric.

[0071] As described above, although the present invention application has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation of the present invention application itself. Various changes in form and detail may be made without departing from the spirit and scope of the present invention application as defined by the appended claims.

Claims

1. A weft-laying device for a full-width weft-insertion warp knitting machine with a yarn selection function, characterized in that: include: A yarn rack, a yarn guide rod is installed above the bobbin yarn of the yarn rack, a tension adjuster is installed on the yarn rack, a weft selector body is installed on the right side of the tension adjuster, the weft selector body is provided with a yarn threading hole, a weft delivery rod is provided on the front side of the weft selector body, a first electromagnetic device is installed on the back side of the weft selector body, a wire is installed on the weft selector body, one end of the wire is connected to a controller, and the other end is connected to the first electromagnetic device, the first electromagnetic device includes a conductive wire, a solenoid and a power supply, the conductive wire is wound on the solenoid, both sides of the conductive wire are connected to the power supply, the right side of the solenoid is an electromagnet, and the electromagnet is connected to the weft delivery rod.

2. The weft placing device of a full-width weft insertion warp knitting machine with a yarn selection function according to claim 1, characterized in that: Clamping mechanisms are respectively installed on both sides of the weft laying device, and the clamping mechanisms include a connecting piece, a clamping base, a flexible pressure roller, a cantilever, a rotating shaft hole, a displacement rod, a reset spring and a second electromagnetic device. The clamping base is installed on the weft laying device through multiple connecting pieces, and a flexible pressure roller with a connecting rod is installed above the clamping base, and the flexible pressure roller with the connecting rod is connected to the cantilever through the rotating shaft hole. A second electromagnetic device is installed above the cantilever, and a displacement rod is installed on the front side of the second electromagnetic device, and the front side of the displacement rod is connected to the reset spring, and the reset spring is connected to the flexible pressure roller with the connecting rod; the second electromagnetic device drives the displacement rod to move, and the movement of the displacement rod drives the flexible pressure roller with the connecting rod to press on the clamping base.

3. The weft placing device of a full-width weft insertion warp knitting machine with a yarn selection function according to claim 2, characterized in that: The bottom of the weft insertion mechanism is a mounting base plate, the weft insertion mechanism is installed under the weft placing trolley, the top of the weft insertion mechanism is a mounting cover plate, the front end of the weft insertion mechanism is installed with a first clamp and a second clamp, the right side of the first clamp and the second clamp is connected to a driving slide, the right side of the driving slide is connected to a driving cylinder, and the driving cylinder drives the first clamp and the second clamp to clamp the yarn.

4. The weft placing device of a full-width weft insertion warp knitting machine with a yarn selection function according to claim 3, characterized in that: A first shearing mechanism and a second shearing mechanism are respectively installed on both sides of the weft laying device. The first shearing mechanism and the second shearing mechanism both include a blade, an upper plate and a lower plate. The blade is connected to the upper plate, and a groove is provided on the lower plate. The blade is used to cut the yarn above the groove.

5. The weft placing device of a full-width weft insertion warp knitting machine with a yarn selection function according to claim 4, characterized in that: The second electromagnetic device has the same structure as the first electromagnetic device, and the weft placing trolley drives the weft insertion mechanism to perform reciprocating motion.

6. The weft placing device of a full-width weft insertion warp knitting machine with a yarn selection function according to claim 5, characterized in that: The weft laying device of the full-width weft insertion warp knitting machine with yarn selection function also includes a yarn presser and a suction cup electromagnet. The upper end of the yarn presser is iron, and the lower end is ceramic to avoid friction. When the suction cup electromagnet is energized, the yarn presser is attracted upward, and when the suction cup electromagnet is not energized, the yarn presser falls down to clamp the yarn.

7. A weft placing device for a full-width weft insertion warp knitting machine with a yarn selection function according to claim 6, characterized in that: The electromagnet is higher than the weft sending rod.

8. A yarn selection method for a weft placement device of a full-width weft insertion warp knitting machine, which adopts a weft placement device of a full-width weft insertion warp knitting machine with a yarn selection function as described in any one of claims 1 to 7, characterized in that: include: Step S100, the various cheese yarns of different colors placed on the creel successively pass through the yarn guide rod and the tension regulator, and the yarns are passed through the multiple yarn threading holes into the main body of the weft selector; Step S200: After being processed by the controller, the positive and negative directions of the power supply are changed, so that the magnetic N and S levels of the solenoid are changed, and the electromagnet connected to the weft delivery rod generates attraction or repulsion, and the required weft yarn is selected.

9. A yarn selection method for a weft placement device of a full-width weft insertion warp knitting machine according to claim 8, characterized in that: After step S200, the following steps are also included: Step S300: When the required weft yarn is selected, the yarn presser falls down to hold the selected weft yarn. When the weft delivery rod reaches the specified position, the suction cup electromagnet sucks up the yarn presser. Then the selected weft yarn is clamped by the first clamping claw and the second clamping claw of the weft insertion mechanism under the weft placing trolley, so that the weft yarn is guided from one side to the other side. Step S400: When the weft placing trolley reaches the other side, the second electromagnetic device starts to work, generating a force that repels the magnet connected to the displacement rod, thereby pushing the flexible pressure roller to press the yarn onto the clamping base, and then the first shearing mechanism and the second shearing mechanism on both sides of the weft placing device work simultaneously to cut off the yarn at both ends, and the weft placing trolley drives the weft insertion mechanism to move back. During the process of the weft insertion mechanism moving back, the weft selector body performs the next weft yarn selection.

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