Yarn storage method

Abstract

The invention relates to a yarn storage method, which comprises the following steps of: mounting a spool on a rotating shaft powered by a motor, rotating the rotating shaft to drive yarns to be unwound along the circumferential tangential direction of the spool, blowing the yarns into a yarn storage cavity through airflow, and leading the yarns out of the yarn storage cavity from top to bottom, then from bottom to top and finally from the upper part. According to the yarn temporary storage device, non-twisted yarn can be temporarily stored, and yarn is supplied for next-step weaving.

Description

Technical Field

[0001] The present application relates to a yarn storage method, specifically a yarn storage method in an untwisted state, which can be applied to textile equipment that needs to provide untwisted yarn. Background Art

[0002] In modern weaving processes, wherever high-speed unwinding of yarn is required, the yarn will be twisted due to the combined axial and radial rotation of the yarn. However, textiles used in some specific composite materials require the fabric to be flat and uniform, and it is hoped that the yarn will not be twisted during the weaving process.

[0003] The usual yarn outlet method is as follows Figure 1 As shown, a portion of the yarn is unwound and stored on the weft accumulator 10, and then the yarn is introduced from the weft accumulator 10 along its axial direction to the loom for weft supply. Figure 2 The yarn is fed along the direction of the arrow, that is, the yarn is discharged axially, so twist is naturally formed in the radial direction. For example, a twist-free weft feeding device described in Patent No. CN202881562U is characterized in that it includes a servo motor, a weft yarn locking device, a yarn guiding control component, an air suction device and a weft storage box. The servo motor drives the weft yarn cylinder to rotate and transport the weft yarn to the loom through the weft storage box. The weft yarn cylinder locking device is arranged on the weft yarn cylinder. The yarn guiding control components are respectively arranged on the inlet side and the outlet side of the weft storage box. It is a vertical weft storage box with closed sides and an opening on the top. Guide wheels for guiding weft yarns are respectively arranged on both sides of the top of the weft storage box. The guide wheel on one side is a weft yarn input guide wheel that guides the weft yarn from the weft yarn tube into the weft storage box, and the guide wheel on the other side is a weft yarn output guide wheel that guides the weft yarn in the weft storage box to the loom. A plurality of weft yarn position sensors arranged at intervals are arranged in the longitudinal middle of the weft storage box, and a suction hole is provided at the bottom of the weft storage box. The suction hole is connected to a suction device, and the signal output of the weft yarn position sensor is connected to a controller, and the output of the controller is connected to a servo motor. However, since the suction device is installed at the bottom of the weft storage box, the weft yarn entering the weft storage box is prone to entanglement and curling, resulting in the weft line drawn out not meeting the requirements of subsequent processing.

[0004] Therefore, in order to solve the above technical problems, it is necessary to provide a method for storing twist-free weft yarns to overcome the above defects in the prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a yarn storage method, which can temporarily store untwisted yarn and supply it for the next weaving process.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A yarn storage method, wherein a yarn drum is mounted on a rotating shaft powered by a motor, the rotating shaft rotates, driving the yarn to be unwound along the tangential direction of the yarn drum circumference, and blown into a yarn storage cavity through air flow, and the yarn is unwound from top to bottom, then from bottom to top, and finally out from the top in the yarn storage cavity.

[0007] By adopting the above technical solution, the yarn is unwound along the circumferential tangent direction, and no twist is formed in the axial direction. The yarn without twist is loose in texture and cannot smoothly enter the yarn storage cavity for storing the yarn by itself. It can smoothly enter the yarn storage cavity with the help of airflow. The yarn in the yarn storage cavity falls from the upper part to the lower part of the yarn storage cavity, then is pulled back from the lower part to the upper part, and finally comes out. In this way, the yarn forms a parabolic trajectory in the yarn storage cavity, and the length of the yarn in the yarn storage cavity is the storage amount of yarn.

[0008] The solution of the present invention can be further optimized: The yarn storage cavity is provided by a yarn storage box, and a wire outlet and a wire inlet are provided on the upper part of the yarn storage box.

[0009] The yarn inlet is provided with an air flow yarn guiding mechanism, and the yarn is guided to the yarn storage box through the air flow yarn guiding mechanism.

[0010] The air flow yarn guiding mechanism is in the form of a nozzle, the yarn passes through the nozzle and enters the yarn storage box, the nozzle is connected to the air pipe, and the external air flow is sprayed along the yarn feeding direction to introduce the yarn into the yarn storage box.

[0011] The nozzle is a hollow pipe, one end of which faces outwards and the other end is inserted into the yarn storage box and is communicated with the air pipe.

[0012] The airflow yarn guiding mechanism is in the form of a pipe, including an upper main pipe and a lower guide pipe, the side of the main pipe is connected to the air pipe; the yarn enters downward from the main pipe inlet, and the airflow of the air pipe drives the yarn to the guide pipe, and the guide pipe wall is provided with axial grooves.

[0013] .The yarn storage box is provided with an air outlet at the bottom.

[0014] The yarn storage box is provided with a camera device; the camera device detects the yarn movement track in the observation area of ​​the yarn storage box, and determines the yarn storage amount according to the yarn movement track.

[0015] The length of the yarn storage cavity does not exceed one half of its height, and the width of the yarn storage cavity does not exceed one third of its length.

[0016] The yarn passes through a damping mechanism before exiting.

[0017] The damping mechanism is a brush structure.

[0018] Outside the outlet, a trumpet-shaped guide cover is installed which changes from large to small along the outlet direction.

[0019] Compared with the prior art, the present invention has the following beneficial effects: by adopting the above technical scheme, the motor output shaft rotates, driving the yarn to unwind along the tangential direction of the circumference of the yarn tube, without twisting in the axial direction. The yarn without twist is loose in texture, and therefore cannot smoothly enter the yarn storage cavity by its own gravity. With the help of air flow introduction, the yarn can be smoothly introduced into the yarn storage box, reducing the entanglement of the yarn at the inlet and other unstable factors.

[0020] The yarn storage box of the present invention is a flat rectangular box body, the size of which conforms to the parabolic shape of the yarn, thereby overcoming the problem of the yarn moving at a high speed being entangled in the cavity.

[0021] At the same time, the camera device in the present invention can accurately feedback the position status of the yarn in the yarn storage box to determine the storage amount of yarn, and flexibly adjust the speed of the motor according to the storage amount of yarn to ensure the stability of yarn storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a working schematic diagram of a weft storage device in the prior art of the present invention; Figure 2 It is a schematic diagram of yarn twist in the prior art of the present invention; Figure 3 It is a structural schematic diagram of a preferred embodiment 1 of the present invention; Figure 4 It is a structural schematic diagram of a preferred embodiment 2 of the present invention; Figure 5 This is a schematic diagram of a yarn storage box and an electric control box in a preferred embodiment of the present invention; Figure 6 This is a schematic diagram of the internal structure of the yarn storage box and the electric control box in a preferred embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of the electric control box in a preferred embodiment of the present invention; Figure 8 This is a schematic diagram of the nozzle structure of the second preferred embodiment of the present invention.

[0023] Please refer to the instruction manual Figure 3 To Attachment Figure 8 As shown, the present invention mainly proposes a yarn storage method, which uses untwisted yarn. During the weaving of textiles, the loom needs to be equipped with a yarn storage device for the untwisted yarn. The details are as follows: A yarn storage method, a yarn tube 1 with yarn is installed on a rotating shaft 2, and the rotating shaft 2 is powered by a motor. In order to improve the accuracy of control, the motor can be a servo motor 3. In this embodiment, the servo motor is taken as an example, and the rotating shaft 2 can be the motor shaft of the servo motor 3, or a shaft connected to the power of the servo motor, and can be driven to rotate by the servo motor 3. When the rotating shaft 2 rotates, the yarn 11 is unwound along the tangential direction of the circumference of the yarn tube 1, so no twist is formed in the axial direction.

[0024] The unwound yarn 11 enters the yarn storage box 4, which has a rectangular or rectangular-like cavity to form a yarn storage cavity 5 for storing the yarn. The untwisted yarn 11 is light and loose in texture, and cannot smoothly enter the yarn storage cavity 5 by relying on its own weight. This is one of the technical difficulties of the present invention. The present invention uses airflow to guide the yarn 11 into the yarn storage box 4 at the inlet 41. For details, please refer to Figure 2 An inlet 41 and an outlet 42 are provided on both sides of the upper portion of the yarn storage box 4, wherein an air flow yarn guiding mechanism is provided in the inlet 41, and the yarn is guided into the yarn storage box 4 through the air flow yarn guiding mechanism.

[0025] In the first embodiment, the air flow yarn feeding mechanism is in the form of a nozzle 6. The nozzle 6 is a hollow pipe, which is inserted into the yarn storage cavity 5 from the outside to the inside, with one end exposed to the outside of the yarn storage box 4 and the other end inserted into the inside of the yarn storage box 4. The yarn 11 passes through the middle of the nozzle 6 and enters the yarn storage cavity 5. At the same time, one side of the nozzle 6 is connected to the air pipe 61, and compressed air is sprayed downward from the air pipe 61 to form a downward airflow, which drives the yarn 11 to smoothly enter the yarn storage cavity 5. After the yarn 11 exits the yarn tube 1, it is roughly located above the nozzle 6, and the yarn 11 enters the wire inlet 41. The airflow in the nozzle 6 quickly blows the loose yarn 11 in, effectively solving the problem of the yarn 11 shaking and entangled near the wire inlet 41.

[0026] In the second embodiment, the airflow yarn guiding mechanism can also be in the form of a tube, including an upper main tube 63 and a lower guide tube 64, the side of the main tube 63 is connected to the air tube 61; the yarn enters downward from the inlet of the main tube 63, and the airflow of the air tube 61 drives the yarn to the guide tube 64, and the wall of the guide tube 64 is provided with an axial slot 65. In the airflow state, the guide tube 64 effectively keeps the yarn running stably, and in the state of stable yarn running, the yarn can be freely discharged from the bottom of the guide tube 64 or the slot 65, which is convenient for changing the yarn movement trajectory during the activities of yarn storage and yarn supply.

[0027] After the yarn 11 enters the yarn storage cavity 5, it falls from the upper part to the lower part, and then returns from the lower part to the upper part, and comes out from the outlet 42 which is also at the upper part of the yarn storage box 4. The trajectory of the yarn 11 in the yarn storage cavity 5 roughly forms a parabola, with a valley point formed at the lowest point. The length of the parabolic trajectory can be regarded as the amount of yarn 11 stored in the yarn storage cavity 5.

[0028] In order to smoothly introduce the yarn 11, the wire inlet 41 is opened on the top surface of the yarn storage box 45. At the same time, a distance is maintained between the wire outlet 42 and the wire inlet 41, so that the opening size of the parabolic trajectory of the yarn 11 in the yarn storage cavity 5 can be appropriate, and the yarns 11 on both sides are not easy to collide with each other and entangle and curl. The wire outlet 42 can be set on the top surface of the yarn storage box 4, or the side surface of the upper part. In this embodiment, the upper side surface is taken as an example, so that the length space of the yarn storage cavity 5 can be fully utilized to ensure the opening of the parabolic trajectory. In addition, the bottom of the yarn storage box 4 can be opened to form an air outlet, and the air inside the yarn storage cavity 5 is discharged from the air outlet, so that downward suction can be formed to properly maintain the yarn 11 in a stable state, and prevent the yarn 11 from swinging, floating, and entangled in the cavity at will, which causes the yarn to be unable to smoothly exit from the wire outlet 42.

[0029] According to the parabolic trajectory formed by the yarn 11 in the yarn storage box 4, the yarn storage cavity 5 in the yarn storage box 4 is preferably a rectangular cavity. The height direction of the yarn storage cavity 5 is the height direction of the parabola, and the length direction is the opening direction of the parabola. The inlet 41 and the outlet 42 are in the length direction of the yarn storage cavity 5. The distance between the two determines the opening size of the parabolic trajectory of the yarn in the yarn storage cavity 5. The length of the yarn storage cavity 5 does not exceed one-half of the height. The width of the yarn storage cavity 5 does not exceed one-third of the length, which allows the parabolic trajectory of the yarn to sway back and forth in a small range, and ensures that the yarn trajectory is in a relatively stable space. The ratio between the three is in an appropriate range, and the parabolic trajectory of the yarn 11 can be stable for a long time.

[0030] During the yarn storage process, the yarn 11 is always in a dynamic state. The present invention installs a camera device 71 on the yarn storage box 4. The camera device 71 is fixed by a bracket 73 to monitor the situation in the yarn storage cavity 5.

[0031] Combination Figure 2 When the yarn 11 is in the yarn storage chamber 5, the camera device 71 monitors the dynamic trajectory of the yarn in real time. When the amount of yarn 11 stored in the yarn storage chamber 5 is small, the servo motor 3 accelerates the rotation to make the yarn 11 enter the yarn storage chamber 5 faster. When the amount of yarn 11 stored in the yarn storage chamber 5 is large, the servo motor 3 decelerates the rotation to make the yarn 11 enter the yarn storage chamber 5 at a slower speed, so as to keep the amount of yarn stored appropriate.

[0032] To ensure the synchronization and accuracy of the entire yarn storage process, the present invention is equipped with an electronic control system. The camera device 71 and the servo motor 3 are connected to the electronic control system, and the data is processed and sent and received by a unified central controller. The electronic control system is installed in the electronic control box 8. Therefore, in the entire device design, the yarn storage box 4 and the electronic control box 8 are combined to form a complete overall box body 9. One side of the overall box body 9 is the yarn storage box 4, and the other side is the electronic control box 8, and a plate body 91 is shared in the middle. The hardware and electrical components mentioned above can all be installed in the electronic control box 8, including the camera device 71 and its bracket 73, the servo motor 3, etc.

[0033] In order to ensure the stability of the yarn 11 when it is discharged, it is necessary to perform positioning treatment before the yarn 11 is discharged. Therefore, a damping mechanism can be installed inside the yarn storage box 4, near the outlet 42. In this embodiment, the damping mechanism is a brush structure, and the yarn 11 passes through the middle of the bristles of the brush structure and then exits from the outlet 42. The brush structure includes two rows of aligned bristles, and the yarn 11 passes through the middle of the two rows of bristles. This can stabilize the outlet state of the yarn 11.

[0034] In addition, after the yarn 11 is discharged, a trumpet-shaped guide cover 45 is arranged outside the outlet 42, and the trumpet mouth of the guide cover 45 is gradually reduced along the outlet direction. Therefore, when the yarn 11 just comes out of the outlet 42, the speed and state are unstable. After being guided by the guide cover 45, the yarn 11 gradually maintains a certain tension, eliminating the balloon formed by the yarn discharge.

[0035] The specific working process of a yarn storage method of the present invention is as follows: The servo motor 3 is started, and the yarn 11 is unwound from the bobbin 1 along the tangential direction of the circle and falls into the inlet 41. The nozzle 6 or the guide tube 64 on the inlet 41 sprays the yarn 11 into the yarn storage box 4 with the help of airflow. The yarn 11 forms a parabolic trajectory from top to bottom and then from bottom to top in the yarn storage box 4. After being positioned by the brush, the yarn 11 is discharged from the upper outlet 42. The trumpet-shaped guide cover 45 eliminates the air ring formed by the yarn discharge, and supplies yarn for the next weaving. The camera device 71 monitors the dynamic trajectory of the yarn 11 in real time to ensure that the storage amount of yarn can always be maintained at an appropriate amount to meet the yarn supply demand during weaving.

[0036] The above specific implementation methods are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A yarn storage method, characterized in that: The yarn tube is installed on a rotating shaft powered by a motor. The rotating shaft rotates, driving the yarn to unwind along the tangential direction of the yarn tube circumference and blown into a yarn storage chamber through air flow. The yarn is unwound from top to bottom, then from bottom to top, and finally out from the top in the yarn storage chamber.

2. A yarn storage method according to claim 1, characterized in that: The yarn storage cavity is provided by a yarn storage box, and a wire outlet and a wire inlet are provided on the upper part of the yarn storage box.

3. A yarn storage method according to claim 2, characterized in that: The yarn inlet is provided with an air flow yarn guiding mechanism, and the yarn is guided to the yarn storage box through the air flow yarn guiding mechanism.

4. A yarn storage method according to claim 3, characterized in that: The air flow yarn guiding mechanism is in the form of a nozzle, the yarn passes through the nozzle and enters the yarn storage box, the nozzle is connected to the air pipe, and the external air flow is sprayed along the yarn feeding direction to introduce the yarn into the yarn storage box.

5. A yarn storage method according to claim 4, characterized in that: The nozzle is a hollow pipe, one end of which faces outwards and the other end is inserted into the yarn storage box and is communicated with the air pipe.

6. A yarn storage method according to claim 2, characterized in that: The airflow yarn guiding mechanism is in the form of a pipe, including an upper main pipe and a lower guide pipe, the side of the main pipe is connected to the air pipe; the yarn enters downward from the main pipe inlet, and the airflow of the air pipe drives the yarn to the guide pipe, and the guide pipe wall is provided with axial grooves.

7. A yarn storage method according to claim 2, characterized in that: The yarn storage box has an air outlet at the bottom.

8. A yarn storage method according to claim 2, characterized in that: The yarn storage box is provided with a camera device; the camera device detects the yarn movement track in the observation area of ​​the yarn storage box, and determines the yarn storage amount according to the yarn movement track.

9. A yarn storage method according to claim 1, characterized in that: The length of the yarn storage cavity does not exceed one half of its height, and the width of the yarn storage cavity does not exceed one third of its length.

10. A yarn storage method according to claim 1, characterized in that: The yarn passes through a damping mechanism before exiting.

11. A yarn storage method according to claim 10, characterized in that: The damping mechanism is a brush structure.

12. A yarn storage method according to claim 3, characterized in that: Outside the outlet, a trumpet-shaped guide cover is installed which changes from large to small along the outlet direction.

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