Device for unwinding and winding plied yarns and plying method thereof

Abstract

The invention provides a device for unwinding and winding plied yarns and a plying method thereof.The device comprises a yarn supply unit, an unwinding unit and a plying machine, the yarn supply unit comprises a plurality of erected yarn bobbins, the unwinding unit comprises a plurality of unwinding rollers, and a guide assembly is arranged at the position, at the bottom end of a rotating shaft, of the plying machine; by arranging the multiple erected yarn bobbins of the yarn supply unit and the multiple corresponding unwinding rollers of the unwinding unit, the problem of uneven tension in the yarn unwinding process can be effectively solved, it is ensured that each yarn is in a stable state when entering the plying stage, and the quality basis of the plied yarn is improved. A bundling ring is arranged at the inlet end of an adjusting frame in the stranding machine, yarn can be preliminarily tidied, a first tension rod at the top end and a plurality of second tension rods arranged below the first tension rod at intervals are matched with a guide wheel at the tail end, and the row ratio density can be controlled when stranded yarn is formed and wound by changing the yarn passing paths of the yarn on the tension rods; and different threading and winding modes can be selected according to different yarns.

Description

Technical Field

[0001] The invention relates to the technical field of yarn plying, in particular to a device for unwinding and winding plying yarns and a plying method thereof. Background Art

[0002] In the field of yarn processing in the textile industry, the production of plied yarn is an important process, and its quality directly affects the performance and quality of subsequent textiles. With the continuous development of textile technology and the growing market demand for high-quality yarn products, the performance requirements for plied yarn production equipment are also getting higher and higher.

[0003] Traditional yarn plying devices have many limitations in structure and function. First, in the yarn unwinding process, the yarn is usually released directly from the yarn tube, and multiple yarns are ply-wound, and the tension of the yarn is uneven during the unwinding process. This uneven tension will cause the yarn to be in an unstable state when entering the plying stage, which will affect the quality of the ply yarn. In the plying process, existing devices often lack effective wire arrangement and guiding structures. Usually, the yarns are simply brought together for plying, and the arrangement and winding density of the yarns cannot be accurately controlled. This makes the parallel density between the yarns uneven when the ply yarn is formed, with some areas where the yarns are too tight and some areas where they are relatively loose. This uneven parallel density will seriously affect the appearance and internal quality of the ply yarn.

[0004] In addition, traditional devices have poor compatibility with yarns of different specifications and materials. When facing diverse production needs, it is necessary to frequently replace equipment or perform complex debugging, which not only increases production costs and time costs, but also easily affects the stability of product quality due to human operational errors.

[0005] To sum up, in order to meet the demand of modern textile industry for high-quality twisted yarn and improve production efficiency and product quality stability, there is an urgent need for a new type of yarn unwinding and twisted yarn device that can overcome the above-mentioned defects. By optimizing each link in the yarn supply, unwinding and twisting process, reliable control of the twisted yarn forming winding ratio density can be achieved, thereby improving the level and efficiency of the entire yarn twisting production process. Summary of the invention

[0006] The object of the present invention is to provide a device for unwinding and winding plied yarns and a plying method thereof, which can achieve stable plying of the yarns and adjust the parallel density of the plied yarns wound on a roller.

[0007] The present invention provides a device for unwinding and winding twisted yarn, comprising a yarn supply unit, an unwinding unit and a twisting machine, wherein the yarn supply unit comprises a plurality of mounted yarn tubes, the unwinding unit comprises a plurality of unwinding rollers, each of the unwinding rollers corresponds to a yarn; a roller is installed on the rotating shaft of the twisting machine, a wire arranger is arranged on one side of the rotating shaft of the twisting machine, a guide assembly is arranged at the bottom end of the rotating shaft of the twisting machine, the guide assembly comprises an adjusting frame, a bunching ring is arranged at the inlet end of the adjusting frame, a first tension rod is arranged at the top end of the adjusting frame, a plurality of second tension rods are arranged on the adjusting frame below the first tension rod and spaced along the length direction of the adjusting frame, and a guide wheel is arranged at the end of the adjusting frame.

[0008] Furthermore, the yarn supply unit comprises a movable yarn rack, on which a plurality of yarn tubes are rotatably mounted, and a front end of the yarn rack is provided with a plurality of guide rods corresponding to different yarns respectively.

[0009] Furthermore, the debonding unit includes a roller bracket, and a plurality of debonding rollers are rotatably mounted on the roller bracket via bearings, a spiral groove is provided on the surface of each debonding roller, and a first motor for driving the debonding roller to rotate is fixedly mounted on the roller bracket.

[0010] Furthermore, a twisting mechanism is provided between the stranding machine and the unwinding unit. The twisting mechanism is provided between the stranding machine and the unwinding unit. The twisting mechanism includes a twisting wheel and a second motor for driving the twisting wheel to rotate. A plurality of threading holes are provided on the twisting wheel at equal intervals along the circumferential direction.

[0011] Furthermore, the outer side of the twisting wheel is provided with engaging teeth, and a gear meshing with the engaging teeth is fixedly mounted on the output shaft of the second motor.

[0012] Furthermore, a slide rail is provided on one side of the stranding machine close to the unwinding unit, a slide seat is slidably mounted on the slide rail, and the twisting mechanism is fixedly mounted on the top of the slide seat.

[0013] Furthermore, it also includes a tension control unit for controlling the tension of the yarn during the unwinding process, the tension control unit includes a tension sensor, a controller and a tension regulator, the tension sensor is installed on the yarn path between the unwinding roller and the plying machine, and the controller is electrically connected to the tension sensor and the tension regulator.

[0014] Furthermore, the tension adjuster is a magnetic damper or a pneumatic damper.

[0015] A method for plying yarn by unwinding yarn and forming ply yarn, which is implemented based on the device for unwinding yarn and forming ply yarn, comprises the following steps:

[0016] S1: installing the yarn bobbins wound with the yarn to be unwound on the yarn racks of the yarn supply unit respectively;

[0017] S2: The yarn is wound onto the unwinding roller of the unwinding unit and then introduced into the plying machine;

[0018] S3: The plied yarn passes through the guide assembly, through the actuator of the cable arrangement device, and is wound on the roller.

[0019] Furthermore, before the yarn is introduced into the plying machine, a plurality of yarns are respectively threaded through the threading holes of the twisting wheel at equal intervals.

[0020] The beneficial effect of this technical solution is that by setting up multiple yarn barrels of the yarn supply unit and multiple corresponding unwinding rollers of the unwinding unit, the problem of uneven tension in the yarn unwinding process can be effectively improved, ensuring that each yarn is in a stable state when entering the plying stage, and improving the quality foundation of the ply yarn. The clustering ring is set at the inlet end of the adjusting frame in the plying machine to preliminarily regularize the yarn. The first tension rod at the top and the multiple second tension rods arranged at intervals below, in conjunction with the guide wheel at the end, can change the yarn passing path of each tension rod to achieve control of the parallel density when the ply yarn is formed and rolled in, and different threading methods can be selected for different yarns. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the guide assembly in the present invention.

[0024] Figure 3 It is a schematic structural diagram of the yarn supply unit in the present invention.

[0025] Figure 4 It is a structural schematic diagram of the decomposition unit in the present invention.

[0026] Figure 5 It is a structural schematic diagram of the twisting mechanism in the present invention.

[0027] Explanation of the accompanying drawings: 1-yarn supply unit, 101-yarn bobbin, 102-guide rod, 2-retraction unit, 201-retraction roller, 202-first motor, 203-pulley, 204-synchronous belt, 3-twisting machine, 301-cable arranger, 4-twisting mechanism, 401-slide rail, 402-sliding seat, 5-guide assembly, 501-adjusting frame, 502-first tension rod, 503-second tension rod, 504-clustering ring, 505-guide wheel, 506-first strip hole, 507-second strip hole, 508-fastening screw, 6-roller, 7-twisting wheel, 701-threading hole, 702-biting tooth, 703-flange, 8-second motor, 9-mounting frame, 901-roller, 10-gear. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Example 1

[0032] like Figure 1-Figure 5 As shown, the present invention provides a device for unwinding and winding a plied yarn, comprising a yarn supply unit 1, an unwinding unit 2 and a plier 3. The yarn supply unit 1 comprises a movable yarn rack, on which a plurality of yarn tubes 101 are rotatably mounted, and a plurality of guide rods 102 corresponding to different yarns are arranged at the front end of the yarn rack, through which the yarns are led out. A universal wheel is arranged at the bottom end of the yarn rack for moving the entire yarn rack.

[0033] The unwinding unit 2 includes a roller bracket and a plurality of unwinding rollers 201, each unwinding roller 201 corresponds to a yarn; the plurality of unwinding rollers 201 are rotatably mounted on the roller bracket through bearings, the surface of each unwinding roller 201 is provided with a spiral groove, and the yarn can be pulled out under the action of the spiral groove, and a first motor 202 for driving the unwinding roller 201 to rotate is fixedly mounted on the roller bracket, and the unwinding roller 201 is driven to rotate by the first motor 202, and two unwinding rollers 201 coaxially arranged on the roller bracket are fixedly connected, and a pulley 203 is installed at the connection, and a plurality of pairs of unwinding rollers 201 are arranged at equal intervals along the height direction of the roller bracket, and a pulley 203 is also installed on the driving shaft of the first motor 202, and the pulleys 203 on the plurality of unwinding rollers 201 are driven to rotate by installing a synchronous belt 204, thereby driving the unwinding rollers 201 to rotate synchronously. In this embodiment, the synchronous belt 204 is an annular transmission belt with equidistant teeth, and the outer circumference of the pulley 203 is also processed with a corresponding tooth shape. During transmission, the teeth of the synchronous belt 204 and the teeth of the multiple pulleys 203 are meshed with each other for transmission. In order to keep the synchronous belt 204 always meshed with the multiple pulleys 203, a corresponding tensioning component can be set on the roller bracket to maintain the tension of the synchronous belt 204. The tensioning component is a prior art and will not be described in detail here. It can be adaptively selected according to actual conditions.

[0034] The stranding machine 3 includes a stranding machine 3, a roller 6 is installed on the rotating shaft of the stranding machine 3, a wire arrangement device 301 is arranged on one side of the rotating shaft of the stranding machine 3, a guide assembly 5 is arranged at the bottom end of the rotating shaft of the stranding machine 3, and the guide assembly 5 includes an adjustment frame 501, a cluster ring 504 is arranged at the inlet end of the adjustment frame 501, a first tension rod 502 is arranged at the top of the adjustment frame 501, a first strip hole 506 is opened on the side of the adjustment frame 501 along its length direction, and a plurality of second tension rods 503 are arranged in intervals in the first strip hole 506, a guide wheel 505 is arranged at the end of the adjustment frame 501, and a second strip hole 507 can be opened at the top of the adjustment frame 501, so that the second tension rod 503 can be fixed at the second strip hole 507 by a fastening screw 508 after adjusting the position. Through the arrangement of the first tension rod 502 and the plurality of second tension rods 503, the spacing of the second tension rods 503 can be adjusted according to different winding density requirements, and different numbers of tension rods can be used. The reason is that the way the yarn is wound on the tension rod will affect the tightness of the yarn. If the yarn is wound around the tension rod for a large number of times, the friction between the yarn and the tension rod will increase significantly when the yarn is unwound. This large friction will increase the tension on the yarn in the subsequent molding process, thereby making the yarn more compact. On the contrary, if the number of windings is small, the friction on the yarn is small, the tension is relatively small, and the compactness after molding may be low.

[0035] It also includes a tension control unit for controlling the tension of the yarn during the unwinding process. The tension control unit includes a tension sensor, a controller and a tension regulator. The tension sensor is installed on the yarn path between the unwinding roller 201 and the plying machine 3, and is used to monitor the tension of the yarn in real time. The controller is electrically connected to the tension sensor and the tension regulator. The tension regulator in this embodiment is a magnetic damper or a pneumatic damper. The tension regulator adjusts the tension of the yarn according to the instructions of the controller.

[0036] Example 2

[0037] The difference between this embodiment and embodiment 1 is that the stranding machine 3 also includes a twisting mechanism 4, which is arranged between the stranding machine 3 and the unwinding unit 2. The twisting mechanism 4 includes a twisting wheel 7 and a second motor 8 for driving the twisting wheel 7 to rotate. The twisting wheel 7 is provided with a plurality of threading holes 701 at equal intervals along the circumferential direction. An engaging tooth 702 is provided on the outer side of the twisting wheel 7, and a gear 10 meshing with the engaging tooth 702 is fixedly mounted on the output shaft of the second motor 8. The twisting mechanism 4 can be selected as needed. Accordingly, in order to move the twisting mechanism 4 out of the yarn path when not in use, a slide rail 401 is provided on the side of the plying machine 3 close to the unwinding unit 2, and a sliding seat 402 is slidably mounted on the slide rail 401. The twisting mechanism 4 is fixedly mounted on the top of the sliding seat 402, and a mounting frame 9 is provided on the top of the sliding seat 402. A roller 901 is rotatably mounted on the mounting frame 9. Annular flanges 703 are provided on both sides of the twisting wheel 7, and the rollers 901 on the mounting frame 9 abut against the outer side of the annular flange 703 to provide rotational support for the twisting wheel 7.

[0038] The present invention also provides a method for plying yarns by unwinding and winding the ply yarns, which is implemented based on the device for unwinding and winding the ply yarns by yarn unwinding, and comprises the following steps: firstly, yarn tubes 101 wound with the yarns to be unwound are respectively mounted on the yarn racks of the yarn supply unit 1; then, the yarns are wound on the unwinding rollers 201 of the unwinding unit 2 and then introduced into the plying machine 3; after the yarns are led out by the unwinding rollers 201, the tension is adjusted by the tension adjustment unit, and the target linear density, twist, strength and other parameters of the ply yarns are input into the controller of the tension adjustment unit, and the controller calculates the initial tension setting value of each yarn in the unwinding process according to the preset algorithm; the initial tension setting value ranges from the yarn breaking strength to the yarn breaking strength. 5%-50%, and set the monitoring threshold of the tension sensor at the same time, the threshold range is ±5% of the set tension value. During the yarn unwinding process, the tension sensor monitors the tension of the yarn in real time and transmits the tension data to the controller. When the monitored tension value exceeds the set threshold range, the controller sends a command to the tension regulator, and the tension regulator dynamically adjusts the yarn tension by changing the damping size, adjusting the speed of the unwinding roller 201 or other appropriate methods to keep the tension value within the set range; then, multiple yarns can be twisted according to demand, that is, before the yarn is introduced into the plying machine 3, multiple yarns are respectively and evenly spaced on the threading holes 701 of the twisting wheel 7. Finally, the ply-plying yarn passes through the guide assembly 5 and the actuator of the cable arrangement device 301 and is wound on the roller 6.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for unwinding and winding a plied yarn, characterized in that: It includes a yarn supply unit, a withdrawal unit and a stranding machine, the yarn supply unit includes a plurality of mounted yarn tubes, the withdrawal unit includes a plurality of withdrawal rollers, each of the withdrawal rollers corresponds to a yarn; a roller is installed on the rotating shaft of the stranding machine, a wire arranger is arranged on one side of the rotating shaft of the stranding machine, a guide assembly is arranged at the bottom end of the rotating shaft of the stranding machine, the guide assembly includes an adjusting frame, a bunching ring is arranged at the inlet end of the adjusting frame, a first tension rod is arranged at the top end of the adjusting frame, a plurality of second tension rods are arranged on the adjusting frame below the first tension rod and spaced along the length direction of the adjusting frame, and a guide wheel is arranged at the end of the adjusting frame.

2. The device for unwinding and winding plied yarn according to claim 1, characterized in that: The yarn supply unit comprises a movable yarn rack, on which a plurality of yarn tubes are rotatably mounted, and a front end of the yarn rack is provided with a plurality of guide rods corresponding to different yarns respectively.

3. The device for unwinding and winding plied yarn according to claim 1, characterized in that: The debonding unit comprises a roller bracket, a plurality of debonding rollers are rotatably mounted on the roller bracket via bearings, a spiral groove is provided on the surface of each debonding roller, and a first motor for driving the debonding roller to rotate is fixedly mounted on the roller bracket.

4. The device for unwinding and winding plied yarn according to claim 1, characterized in that: A twisting mechanism is also provided between the stranding machine and the unwinding unit. The twisting mechanism is provided between the stranding machine and the unwinding unit. The twisting mechanism includes a twisting wheel and a second motor for driving the twisting wheel to rotate. A plurality of threading holes are provided on the twisting wheel at equal intervals along the circumferential direction.

5. The device for unwinding and winding plied yarn according to claim 4, characterized in that: The outer side of the twisting wheel is provided with meshing teeth, and a gear meshing with the meshing teeth is fixedly mounted on the output shaft of the second motor.

6. The device for unwinding and winding plied yarn according to claim 4, characterized in that: A slide rail is arranged on one side of the stranding machine close to the unwinding unit, a slide seat is slidably mounted on the slide rail, and the twisting mechanism is fixedly mounted on the top of the slide seat.

7. The device for unwinding and winding plied yarn according to claim 1, characterized in that: It also includes a tension control unit for controlling the tension of the yarn during the unwinding process. The tension control unit includes a tension sensor, a controller and a tension regulator. The tension sensor is installed on the yarn path between the unwinding roller and the plying machine. The controller is electrically connected to the tension sensor and the tension regulator.

8. The device for unwinding and winding plied yarn according to claim 7, characterized in that: The tension regulator is a magnetic damper or a pneumatic damper.

9. A method for plying yarns by unwinding yarns, which is realized based on the device for unwinding yarns by unwinding yarns as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1: installing the yarn bobbins wound with the yarn to be unwound on the yarn racks of the yarn supply unit respectively; S2: The yarn is wound onto the unwinding roller of the unwinding unit and then introduced into the plying machine; S3: The plied yarn passes through the guide assembly, through the actuator of the cable arrangement device, and is wound on the roller.

10. The method for plying yarn by unwinding yarn according to claim 9, characterized in that: Before the yarn is introduced into the plying machine, a plurality of yarns are respectively threaded through the threading holes of the twisting wheel at equal intervals.

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