Elastic yarn weft storage device
By designing an elastic yarn weft storage device including a yarn storage drum, a yarn storage plate, a groove, a boss and an adjustment mechanism, the problems of elastic yarn crossing and tension in traditional devices are solved, and efficient and stable supply of elastic yarn is achieved and the quality of fabric is improved.
Patent Information
- Application Number
- CN202421979522.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-15
AI Technical Summary
Traditional weft storage devices are difficult to effectively guide and store elastic yarns, resulting in the yarns being easily crossed and confused, and it is difficult to accurately monitor and adjust the yarn tension in real time, affecting the quality of the fabric.
An elastic yarn weft storage device including a yarn storage drum, a yarn storage plate, a groove, a boss and an adjustment mechanism is designed. The grooves and bosses on the yarn storage plate guide and separate the elastic yarn to prevent crossing. The adjustment mechanism monitors and adjusts the tension of the elastic yarn in real time through the screw, slider and tension sensor.
The efficient, stable and orderly storage and supply of elastic yarns are achieved, and the problems of yarn crossing and tension instability are avoided, and the quality and production efficiency of fabrics are improved.
Smart Images
Figure CN222935620U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of weft storage devices, in particular to an elastic yarn weft storage device. Background Technique
[0002] Textile is the general term for spinning and weaving. The technologies of textile and printing and dyeing have a very long history. As early as in the primitive society, in order to adapt to the climate change, the ancients knew how to obtain materials locally, use natural resources as raw materials for textile and printing and dyeing, and manufacture simple textile tools. Even today, our daily clothes, some daily necessities and artworks are all the products of textile and printing and dyeing technologies.
[0003] In the modern textile industry, elastic yarns are increasingly widely used. However, the efficient and stable storage and supply of elastic yarns have always been a challenging problem. Traditional weft storage devices may not be able to effectively guide the yarn path and store the yarns, resulting in easy crossing and chaos of the yarns, which affects the quality and efficiency of subsequent weaving. Moreover, in terms of tension control, previous devices are difficult to monitor and adjust the yarn tension in real time and accurately, making the yarn tension unstable during the conveying process, thus affecting the quality of the fabric.
[0004] Therefore, we propose an elastic yarn weft storage device. Content of the Utility Model
[0005] The main purpose of the utility model is to provide an elastic yarn weft storage device, in order to prevent chaos and unstable tension of elastic yarns during storage and supply, thereby improving the quality and production efficiency of fabrics, and effectively solving the problems in the background technique.
[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0007] An elastic yarn weft storage device includes a housing. A first motor is arranged inside the housing. The output end of the first motor is fixedly connected with a yarn storage drum. A plurality of groups of equidistantly arranged yarn storage plates are annularly arrayed on the outer side of the yarn storage drum. Grooves for guiding the path and storing the elastic yarns and bosses for separating and positioning the elastic yarns are arranged on the yarn storage plates;
[0008] A support plate is fixedly installed at the top end of the housing. An adjusting mechanism is arranged at the bottom end of the support plate. The adjusting mechanism includes a fixed frame. A lead screw is rotatably connected inside the fixed frame. Two groups of oppositely output thread grooves are arranged on the outer side of the lead screw. Two first sliders are threadedly connected to the outside of the two groups of thread grooves. Two groups of oppositely arranged damping mechanisms are arranged at one end of the two first sliders. The damping mechanism includes a second slider, a limit block, a spring and a sliding rod. A tension sensor is arranged inside the sliding rod. A pressing piece is fixedly installed at one end of the sliding rod.
[0009] By adopting the above technical solution, the first motor starts, and its output end drives the yarn storage drum to rotate. When it is necessary to store elastic yarn, the elastic yarn is introduced into the yarn storage device. The elastic yarn moves and is stored along the groove on the yarn storage plate. The design of the groove provides a specific path for the elastic yarn, guiding the elastic yarn to be wound around the yarn storage drum orderly. At the same time, the convex platform plays a role in separating and positioning the elastic yarn, preventing the elastic yarn from crossing and getting disordered during the winding process, ensuring that the elastic yarn is evenly and stably distributed on the yarn storage plate. When it is necessary to release the elastic yarn for weaving, the rotation of the yarn storage drum drives the elastic yarn to be gradually output from the groove, and the convex platform still maintains the separation and positioning effect on the elastic yarn, enabling the elastic yarn to be conveyed to the weaving link in a stable state and accurate position, thus realizing an efficient, stable and orderly supply of elastic yarn.
[0010] During the working process, when the elastic yarn passes through the adjusting mechanism, the rotation of the lead screw drives the two groups of first sliders on the outside to approach or move away from each other. Since there are two groups of relatively output thread grooves on the lead screw, the moving directions of the first sliders are opposite. The damping mechanism on the first slider plays a role. The second slider slides on the slide bar and is simultaneously restricted by the elastic force of the spring and the limit block. When the elastic yarn passes through the pressing piece, the pressing piece applies a certain pressure to the elastic yarn, generating a damping effect. The tension sensor inside the slide bar monitors the tension received by the elastic yarn in real time. According to the feedback of the tension sensor, if the tension does not meet the set requirements, the position of the first slider can be changed by adjusting the rotation of the lead screw, thereby adjusting the pressure of the pressing piece on the elastic yarn, realizing the adjustment and control of the tension of the elastic yarn, and ensuring the stable tension of the elastic yarn during the entire weft storage process.
[0011] Furthermore, the shapes of the groove and the convex platform are both arc-shaped and evenly distributed on the yarn storage plate. The height of the convex platform is higher than that of the groove. Anti-slip textures are provided on the inner wall of the groove and the surface of the convex platform. The yarn storage plate, the groove and the convex platform are manufactured by an integrated molding process, and the material is a high-strength wear-resistant metal material.
[0012] By adopting the above technical solution, the arc-shaped grooves and convex platforms are evenly distributed on the yarn storage plate. This even distribution helps the elastic yarn to be evenly stored on the yarn storage plate. Since the height of the convex platform is higher than that of the groove, when the elastic yarn enters the yarn storage plate, the convex platform first plays a preliminary role in separating and positioning the elastic yarn, guiding the elastic yarn into the corresponding groove. And the anti-slip textures on the inner wall of the groove and the surface of the convex platform increase the friction force with the elastic yarn, making the elastic yarn more stable when storing and moving in the groove, reducing the situation of sliding and offset. The integrated molding process for manufacturing the yarn storage plate, the groove and the convex platform ensures the strength and stability of the overall structure. The selection of high-strength wear-resistant metal material enables the yarn storage plate to withstand the long-term friction and tension of the elastic yarn, and is not easily deformed and damaged, thus ensuring that during the entire weft storage process, the elastic yarn can be stored and released orderly and stably.
[0013] Further, through slots are provided on both sides of the fixing frame, and a second motor is fixedly installed at the bottom end of the fixing frame. The output end of the second motor penetrates through the fixing frame and is fixedly connected to the lead screw.
[0014] By adopting the above technical solution, when the second motor is started, its output end rotates. Since the output end of the second motor is fixedly connected to the lead screw, the lead screw is driven to rotate within the fixing frame. The through slots on both sides of the fixing frame provide a passage for the elastic yarn to pass through. The rotation of the lead screw enables the first slider threadedly connected to the outside to move along the lead screw, thereby realizing the adjustment operation of the tension of the elastic yarn.
[0015] Further, a chute is provided inside the second slider. The limiting block and the sliding rod are both slidably connected inside the chute. One end of the sliding rod located inside the chute is fixedly connected to the limiting block. One side of the limiting block away from the sliding rod is connected to one inner wall end of the chute through a spring.
[0016] By adopting the above technical solution, when the elastic yarn contacts the pressing piece and causes a tension change, the structure inside the second slider plays a role. Under the action of the tension of the elastic yarn, the sliding rod will slide inside the chute. Since the limiting block at one end of the sliding rod is connected to the inner wall of the chute through a spring, when the sliding rod slides, the spring will be compressed or stretched. The limiting block limits the maximum sliding range of the sliding rod to ensure that the movement of the sliding rod is within a safe range. The elastic action of the spring enables the pressure of the pressing piece on the elastic yarn to be automatically adjusted according to the change of the tension of the elastic yarn, thereby realizing the damping effect and the dynamic balance of the tension. When the tension of the elastic yarn increases, the sliding rod pushes the limiting block to compress the spring, increasing the resistance of the pressing piece to the elastic yarn. When the tension of the elastic yarn decreases, the restoring force of the spring pushes the limiting block and the sliding rod, reducing the resistance of the pressing piece to the elastic yarn, so that the tension of the elastic yarn remains relatively stable.
[0017] Further, a controller is fixedly installed at the top of the support plate, and a connecting seat is provided at the bottom of the housing.
[0018] By adopting the above technical solution, the connecting seat is arranged at the bottom of the housing, and its function is to firmly connect the entire elastic yarn weft storage device to the support structure to ensure the stability and reliability of the device during the working process.
[0019] Further, the controller is electrically connected to the first motor, the second motor and the tension sensor.
[0020] By adopting the above technical solution, the controller, as the control center, establishes communication with the first motor, the second motor, and the tension sensor through electrical connection. The tension sensor monitors the tension of the elastic yarn in real time and transmits the tension data to the controller in the form of an electrical signal. The controller receives and processes these data, and according to the change of the tension and the preset control strategy, the controller sends control instructions to the first motor and the second motor. The first motor adjusts the rotation speed and direction of the yarn storage drum according to the instructions, and the second motor changes the rotation of the lead screw according to the instructions, so as to realize the precise adjustment of the tension of the elastic yarn and the coordinated operation of the entire weft storage device.
[0021] Compared with the prior art, the utility model has the following beneficial effects:
[0022] (1) For the elastic yarn weft storage device of the utility model, the grooves on the yarn storage plate provide a specific path for the elastic yarn, and the convex platforms separate and position the elastic yarn to prevent crossing and confusion, so that the elastic yarn can be wound on the yarn storage drum orderly and accurately transported to the weaving link when released, realizing efficient, stable and orderly supply.
[0023] (2) For the elastic yarn weft storage device of the utility model, the rotation of the lead screw in the adjustment mechanism drives the first slider, the pressing piece in the damping mechanism applies pressure to the elastic yarn, and the tension sensor in the slide bar monitors the tension in real time. According to the feedback of the tension sensor, the rotation of the lead screw is adjusted to change the position of the first slider, thereby adjusting the pressure of the pressing piece, ensuring the stable tension of the elastic yarn during the whole weft storage process, and helping to improve the fabric quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic structural diagram of an elastic yarn weft storage device of the utility model.
[0025] Figure 2 It is a schematic structural diagram of the yarn storage plate of an elastic yarn weft storage device of the utility model.
[0026] Figure 3 It is a schematic structural diagram of the adjustment mechanism of an elastic yarn weft storage device of the utility model.
[0027] Figure 4 It is a schematic structural diagram of the damping mechanism of an elastic yarn weft storage device of the utility model.
[0028] In the figure: 1, housing; 2, yarn storage drum; 3, yarn storage plate; 4, controller; 5, groove; 6, convex platform; 7, support plate; 8, adjustment mechanism; 9, fixing frame; 10, lead screw; 11, first slider; 12, damping mechanism; 13, second slider; 14, chute; 15, limit block; 16, spring; 17, slide bar; 18, tension sensor; 19, pressing piece; 20, through groove; 21, second motor; 22, connecting seat. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0030] In order to prevent problems such as chaos and unstable tension of elastic yarn during storage and supply, thereby improving the quality and production efficiency of fabrics, as Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, an elastic yarn weft storage device includes a housing 1, a first motor is arranged inside the housing 1, the output end of the first motor is fixedly connected with a yarn storage drum 2, a plurality of groups of equally spaced yarn storage plates 3 are annularly arranged on the outer side of the yarn storage drum 2, and a groove 5 for guiding the direction of the elastic yarn and storing the elastic yarn and a convex platform 6 for separating and positioning the elastic yarn are arranged on the yarn storage plate 3;
[0031] A support plate 7 is fixedly installed at the top end of the housing 1, an adjusting mechanism 8 is arranged at the bottom end of the support plate 7, the adjusting mechanism 8 includes a fixed frame 9, a lead screw 10 is rotatably connected inside the fixed frame 9, two groups of relatively output thread grooves are arranged on the outer side of the lead screw 10, and two first sliders 11 are threadedly connected to the outside of the two groups of thread grooves respectively. Two groups of damping mechanisms 12 are arranged at one ends of the two first sliders 11, the damping mechanism 12 includes a second slider 13, a limiting block 15, a spring 16 and a sliding rod 17, a tension sensor 18 is arranged inside the sliding rod 17, and a pressing piece 19 is fixedly installed at one end of the sliding rod 17.
[0032] During use, the first motor is started, and its output end drives the yarn storage drum 2 to rotate. When it is necessary to store elastic yarn, the elastic yarn is introduced into the yarn storage device. The elastic yarn moves and is stored along the groove 5 on the yarn storage plate 3. The design of the groove 5 provides a specific path for the elastic yarn, guiding the elastic yarn to be wound around the yarn storage drum 2 in an orderly manner; at the same time, the convex platform 6 plays a role in separating and positioning the elastic yarn, preventing the elastic yarn from crossing and getting chaotic during the winding process, ensuring that the elastic yarn is evenly and stably distributed on the yarn storage plate 3. When it is necessary to release the elastic yarn for weaving, the rotation of the yarn storage drum 2 drives the elastic yarn to be gradually output from the groove 5, and the convex platform 6 still maintains the separation and positioning effect on the elastic yarn, enabling the elastic yarn to be conveyed to the weaving link in a stable state and accurate position, thereby realizing an efficient, stable and orderly supply of elastic yarn;
[0033] During the working process, when the elastic yarn passes through the adjusting mechanism 8, the rotation of the lead screw 10 drives the two groups of first sliders 11 on the outside to approach or move away from each other. Since there are two groups of relatively output thread grooves on the lead screw 10, the moving directions of the first sliders 11 are opposite. The damping mechanism 12 on the first slider 11 plays a role. The second slider 13 slides on the slide bar 17 and is simultaneously restricted by the elastic force of the spring 16 and the limit block 15. When the elastic yarn passes through the pressing piece 19, the pressing piece 19 applies a certain pressure to the elastic yarn to produce a damping effect. The tension sensor 18 inside the slide bar 17 monitors the tension received by the elastic yarn in real time. According to the feedback of the tension sensor 18, if the tension does not meet the set requirements, the position of the first slider 11 can be changed by adjusting the rotation of the lead screw 10, thereby adjusting the pressure of the pressing piece 19 on the elastic yarn, realizing the adjustment and control of the tension of the elastic yarn, and ensuring the stability of the tension of the elastic yarn during the entire weft storage process.
[0034] Exemplarily, as Figure 2 shown, the present invention further includes that the shapes of the groove 5 and the convex platform 6 are both arc-shaped and are evenly distributed on the yarn storage plate 3. The height of the convex platform 6 is higher than that of the groove 5. Anti-slip textures are provided on the inner wall of the groove 5 and the surface of the convex platform 6. The yarn storage plate 3, the groove 5 and the convex platform 6 are manufactured by an integrated molding process, and the material is a high-strength wear-resistant metal material.
[0035] During use, the arc-shaped groove 5 and convex platform 6 are evenly distributed on the yarn storage plate 3. This even distribution helps the elastic yarn to be evenly stored on the yarn storage plate 3. Since the height of the convex platform 6 is higher than that of the groove 5, when the elastic yarn enters the yarn storage plate 3, the convex platform 6 first plays a preliminary role in separating and positioning the elastic yarn, guiding the elastic yarn into the corresponding groove 5. Moreover, the anti-slip textures on the inner wall of the groove 5 and the surface of the convex platform 6 increase the friction force with the elastic yarn, making the elastic yarn more stable when stored and moving in the groove 5, reducing the situation of sliding and deviation. The integrated molding process for manufacturing the yarn storage plate 3, the groove 5 and the convex platform 6 ensures the strength and stability of the overall structure. The selection of the high-strength wear-resistant metal material enables the yarn storage plate 3 to withstand the long-term friction and tension of the elastic yarn and is not easily deformed or damaged, thereby ensuring that during the entire weft storage process, the elastic yarn can be stored and released orderly and stably.
[0036] Exemplarily, as Figure 1 、 Figure 3 shown, the present invention further includes that through grooves 20 are provided on both sides of the fixed frame 9, and a second motor 21 is fixedly installed at the bottom end of the fixed frame 9. The output end of the second motor 21 penetrates the fixed frame 9 and is fixedly connected to the lead screw 10.
[0037] During use, the second motor 21 is started, and its output end rotates. Since the output end of the second motor 21 is fixedly connected to the lead screw 10, the lead screw 10 is driven to rotate within the fixed bracket 9. The through grooves 20 on both sides of the fixed bracket 9 provide a passage for the elastic yarn to pass through. The rotation of the lead screw 10 enables the first slider threadedly connected to the outside to move along the lead screw 10, thereby realizing the operation of adjusting the tension of the elastic yarn.
[0038] Exemplarily, as Figure 4 shown, the present invention further includes that a chute 14 is provided inside the second slider 13, and the limiting block 15 and the sliding rod 17 are both slidably connected inside the chute 14. One end of the sliding rod 17 located inside the chute 14 is fixedly connected to the limiting block 15, and one side of the limiting block 15 away from the sliding rod 17 is connected to the inner wall of one end of the chute 14 through a spring 16.
[0039] During use, when the elastic yarn contacts the pressing piece and a tension change occurs, the structure inside the second slider 13 plays a role. Under the action of the tension of the elastic yarn, the sliding rod 17 will slide inside the chute 14. Since the limiting block 15 at one end of the sliding rod 17 is connected to the inner wall of the chute 14 through the spring 16, when the sliding rod 17 slides, the spring 16 will be compressed or stretched. The limiting block 15 limits the maximum sliding range of the sliding rod 17 to ensure that the movement of the sliding rod 17 is within a safe range. The elastic action of the spring 16 enables the pressure of the pressing piece on the elastic yarn to be automatically adjusted according to the change of the tension of the elastic yarn, thereby realizing the damping effect and the dynamic balance of the tension; when the tension of the elastic yarn increases, the sliding rod 17 pushes the limiting block 15 to compress the spring 16, increasing the resistance of the pressing piece to the elastic yarn; when the tension of the elastic yarn decreases, the restoring force of the spring 16 pushes the limiting block 15 and the sliding rod 17, reducing the resistance of the pressing piece to the elastic yarn, so that the tension of the elastic yarn remains relatively stable.
[0040] Exemplarily, as Figure 1 shown, the present invention further includes that a controller 4 is fixedly installed on the top of the support plate 7, and a connecting seat 22 is provided at the bottom of the housing 1.
[0041] During use, the connecting seat 22 is arranged at the bottom of the housing 1, and its function is to firmly connect the entire elastic yarn weft storage device to the support structure to ensure the stability and reliability of the device during operation.
[0042] Exemplarily, as Figure 1 、 Figure 2 、 Figure 3 shown, the present invention further includes that the controller 4 is electrically connected to the first motor, the second motor 21 and the tension sensor 18.
[0043] In use, the controller 4 serves as the control center and establishes communication with the first motor, the second motor 21, and the tension sensor 18 through electrical connections. The tension sensor 18 continuously monitors the tension of the elastic yarn and transmits the tension data to the controller 4 in the form of electrical signals. The controller 4 receives and processes these data. According to the change of the tension and the preset control strategy, the controller 4 sends control instructions to the first motor and the second motor 21. The first motor adjusts the rotation speed and direction of the yarn storage drum according to the instructions, and the second motor 21 changes the rotation of the lead screw according to the instructions, thereby achieving precise adjustment of the tension of the elastic yarn and the coordinated operation of the entire weft storage device.
[0044] It should be noted that the present utility model is an elastic yarn weft storage device, and the entire device is stably installed on the support structure through the connecting seat 22 at the bottom of the housing 1;
[0045] Turn on the power and start the device. The controller 4 starts to work and initializes the parameters of each component; the first motor starts and drives the yarn storage drum 2 to rotate, introducing the elastic yarn into the yarn storage device. The elastic yarn moves and is stored along the groove 5 on the yarn storage plate 3, and the boss 6 separates and positions the elastic yarn; when the elastic yarn passes through the adjusting mechanism 8, the second motor 21 rotates the lead screw 10 according to the instructions of the controller 4, driving the first slider 11 to move. The pressing piece 19 in the damping mechanism 12 applies pressure to the elastic yarn, and the tension sensor 18 in the slide bar 17 continuously monitors the tension. If the tension does not meet the setting, the controller 4 adjusts the second motor 21 and the first slider 11 to change the pressure of the pressing piece 19 to achieve tension adjustment; the yarn storage drum 2 rotates according to the demand, driving the elastic yarn to output from the groove 5, and the boss 6 continuously maintains the separation and positioning of the elastic yarn to ensure that the elastic yarn is stably and accurately conveyed to the weaving process; during the entire working process, continuously monitor the parameter display of the controller 4 and observe the tension and operating state of the elastic yarn; according to the actual situation, make necessary adjustments to the motor and the adjusting mechanism 8 through the controller 4 to ensure the high-efficiency, stability, and orderliness of the elastic yarn supply.
[0046] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A weft storage device for elastic yarns, comprising a housing (1), characterized in that: A first motor is arranged inside the housing (1), and an output end of the first motor is fixedly connected to a yarn storage drum (2). An outer annular array of the yarn storage drum (2) has a plurality of yarn storage plates (3) arranged at equal distances. The yarn storage plates (3) are provided with grooves (5) for guiding the direction of elastic yarns and storing the elastic yarns, and bosses (6) for separating and positioning the elastic yarns. A support plate (7) is fixedly mounted on the top of the housing (1), and an adjustment mechanism (8) is provided at the bottom of the support plate (7). The adjustment mechanism (8) comprises a fixing frame (9), and a screw rod (10) is rotatably connected inside the fixing frame (9). Two groups of relatively output thread grooves are provided on the outside of the screw rod (10), and the outsides of the two groups of thread grooves are both threadedly connected to first sliders (11). Two groups of relatively arranged damping mechanisms (12) are provided at one end of the two groups of the first sliders (11), and the damping mechanism (12) comprises a second slider (13), a limit block (15), a spring (16) and a slide rod (17). A tension sensor (18) is provided inside the slide rod (17), and a pressing plate (19) is fixedly mounted on one end of the slide rod (17).
2. The elastic yarn weft storage device according to claim 1, characterized in that: The shapes of the groove (5) and the boss (6) are both arc-shaped and evenly distributed on the yarn storage plate (3); the height of the boss (6) is higher than the groove (5); the inner wall of the groove (5) and the surface of the boss (6) are both provided with anti-slip textures; the yarn storage plate (3), the groove (5) and the boss (6) are manufactured by an integrated molding process and are made of high-strength wear-resistant metal material.
3. The elastic yarn weft storage device according to claim 1, characterized in that: Through slots (20) are provided on both sides of the fixing frame (9), a second motor (21) is fixedly mounted on the bottom end of the fixing frame (9), and an output end of the second motor (21) passes through the fixing frame (9) and is fixedly connected to the screw rod (10).
4. The elastic yarn weft storage device according to claim 1, characterized in that: A slide groove (14) is provided inside the second sliding block (13); the limit block (15) and the slide rod (17) are both slidably connected inside the slide groove (14); one end of the slide rod (17) located in the slide groove (14) is fixedly connected to the limit block (15); and the side of the limit block (15) away from the slide rod (17) is connected to the inner wall of one end of the slide groove (14) via a spring (16).
5. The elastic yarn weft storage device according to claim 1, characterized in that: A controller (4) is fixedly mounted on the top of the support plate (7), and a connecting seat (22) is provided on the bottom of the housing (1).
6. The elastic yarn weft storage device according to claim 5, characterized in that: The controller (4) is electrically connected to the first motor, the second motor (21) and the tension sensor (18).