Yarn storage device

Abstract

The utility model relates to a yarn storage device which comprises a yarn storage box, a yarn outlet and a yarn inlet are formed in the two ends of the top of the yarn storage box respectively, an airflow yarn guiding mechanism facing the bottom of the yarn storage box is installed at the yarn inlet, and yarn penetrates through the airflow yarn guiding mechanism to enter the yarn storage box. According to the yarn storage device, non-twisted yarns can be temporarily stored, and wefts can be supplied to a weaving machine.

Description

Technical Field

[0001] This application relates to a yarn storage device, belonging to the field of untwisted weft storage technology. Background Technology

[0002] In modern weaving processes, weft feeders are widely used in places where high-speed unwinding of yarn is required, such as various shuttleless looms and circular knitting machines. Because the combined axial and radial rotation of the yarn causes twisting, textiles using certain composite materials require a smooth and uniform fabric, and it is desirable that the weft yarn not twist during weft insertion.

[0003] Typical yarn exit methods, such as Figure 1 As shown, a portion of the yarn is unwound and stored in the weft feeder 10, and then introduced into the weft supply of the loom along its axial direction. Combined with... Figure 2 The yarn is fed in the direction of the arrow, that is, the yarn comes out axially, so twist will naturally form in the radial direction.

[0004] Existing technologies include several yarn storage devices, such as the untwisted weft feeding device described in patent number CN202881562U. This device is characterized by comprising a servo motor, a weft yarn bobbin locking device, yarn guiding and control components, a suction device, and a weft storage box. The servo motor drives the weft yarn bobbin to rotate and feeds the weft yarn to the loom via the weft storage box. The weft yarn bobbin locking device is mounted on the weft yarn bobbin. The yarn guiding and control components are respectively located on the inlet and outlet sides of the weft storage box. The weft storage box is enclosed on all four sides but has an opening at the top. The vertical weft feeder has guide rollers on both sides of its top. One guide roller on one side guides the weft yarn from the weft yarn cylinder into the feeder, while the other guide roller on the other side guides the weft yarn from the feeder to the loom for output. Multiple weft yarn position sensors are spaced apart along the longitudinal center of the feeder, and a suction hole is located at the bottom of the feeder, connected to a suction device. The signal outputs of the weft yarn position sensors are connected to a controller, and the controller's output is connected to a servo motor. However, because the suction device is installed at the bottom of the feeder, the weft yarn entering the feeder is prone to tangling and curling, resulting in the extracted weft yarn not meeting the requirements for subsequent processing.

[0005] Therefore, in order to solve the above-mentioned technical problems, it is indeed necessary to provide a yarn storage device to overcome the defects in the prior art. Utility Model Content

[0006] The purpose of this invention is to provide a yarn storage device that allows yarn to be stored without twisting it.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] The yarn storage device includes a yarn storage box. The top of the yarn storage box has an outlet and an inlet at both ends. An airflow yarn guiding mechanism facing the bottom of the yarn storage box is installed at the inlet. The yarn passes through the airflow yarn guiding mechanism and enters the yarn storage box.

[0009] By adopting the above technical solution, the loosely textured yarn cannot smoothly enter the yarn storage chamber on its own. Instead, it can smoothly enter the storage chamber with the help of an airflow guiding mechanism. The yarn in the storage box falls from the top to the bottom, then is pulled back up to the top, and finally exits. In this way, the yarn forms a parabolic trajectory within the storage chamber, and the length of the yarn within the storage chamber is the amount of yarn stored.

[0010] The solution of this utility model can be further optimized:

[0011] The airflow 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 an air pipe, and external airflow is sprayed in along the yarn feeding direction to guide the yarn into the yarn storage box.

[0012] The airflow yarn guiding mechanism is in the form of a tubular component, including an upper main pipe and a lower guide pipe. The main pipe is connected to the air pipe on the side. The yarn enters downward from the inlet of the main pipe, and the airflow in the air pipe carries the yarn to the guide pipe. The guide pipe has axial grooves on its wall.

[0013] An air outlet is provided at the bottom of the yarn storage box.

[0014] A horn-shaped lead shield is installed at the outlet.

[0015] A damping mechanism is installed on the cable outlet.

[0016] The damping mechanism is a brush.

[0017] An electrical control box is installed on the back of the yarn storage box, and a camera device is installed inside the electrical control box via a bracket.

[0018] The camera device has an observation area.

[0019] By adopting the above technical solution, the camera device can provide feedback on the state of the yarn in the yarn storage box, thereby adjusting the speed of the servo motor and ensuring the stability of yarn storage.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The nozzle in this invention can blow the yarn into the yarn storage box, and the yarn drawn out will not become tangled.

[0022] 2. The yarn storage box of this utility model avoids the situation where high-speed moving yarns become entangled inside the yarn storage box.

[0023] 3. In this utility model, the camera device can provide feedback on the state of the yarn in the yarn storage box to adjust the speed of the servo motor and ensure the stability of the yarn storage. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the operation of the weft feeder in the prior art of this utility model;

[0025] Figure 2 This is a schematic diagram of yarn twist in the prior art of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of a preferred embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of a preferred embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the yarn storage box and the electrical control box in a preferred embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the yarn storage box and the electrical control box in a preferred embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the internal structure of the electrical control box in a preferred embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the nozzle structure of a preferred embodiment of the present invention. Detailed Implementation

[0032] Please refer to the instruction manual appendix. Figure 3 To be continued Figure 8 As shown, this utility model mainly proposes a yarn storage method, which uses untwisted yarn. During the textile weaving process, the loom needs to be equipped with a yarn storage device for the untwisted yarn. Specifically:

[0033] A yarn storage method involves a yarn bobbin 1 containing yarn mounted on a rotating shaft 2. The rotating shaft 2 is powered by a motor, and to improve control precision, a servo motor 3 can be used. In this embodiment, a servo motor is used as an example. The rotating shaft 2 can be the motor shaft of the servo motor 3, or a shaft connected to the servo motor for power, driven by the servo motor 3. When the rotating shaft 2 rotates, the yarn 11 unwinds along the circumferential tangential direction of the yarn bobbin 1, thus preventing axial twist.

[0034] The unwound yarn 11 enters the yarn storage chamber 5 inside the yarn storage box 4. The untwisted yarn 11 is lightweight and loose, and cannot easily enter the yarn storage chamber 5 by its own weight; this is one of the technical challenges of this invention. This invention uses airflow to guide the yarn 11 into the yarn storage box 4 at the inlet 41. For details, please refer to [link to relevant documentation]. Figure 2 The upper part of the yarn storage box 4 is provided with a yarn inlet 41 and a yarn outlet 42. The yarn inlet 41 is provided with an airflow yarn guiding mechanism, through which the yarn is guided into the yarn storage box.

[0035] In this first embodiment, the airflow yarn guiding mechanism is in the form of a nozzle 6. The nozzle 6 is a hollow tube that is inserted into the yarn storage chamber 5 from the outside to the inside, with one end protruding outside 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 chamber 5. At the same time, one side of the nozzle 6 is connected to an air pipe 61, and compressed air is sprayed downward from the air pipe 61 to form a downward airflow, which smoothly carries the yarn 11 into the yarn storage chamber 5. After the yarn 11 exits from the yarn bobbin 1, it is approximately above the nozzle 6. The yarn 11 enters the inlet 41, and the airflow in the nozzle 6 quickly blows the loose yarn 11 in, effectively solving the problems of the yarn 11 swaying and tangling near the inlet 41.

[0036] In this second embodiment, the airflow yarn guiding mechanism can also be in the form of a tubular component, including an upper main pipe 63 and a lower guide pipe 64. The main pipe 63 is connected to the air pipe 61 on its side. The yarn enters downward from the inlet of the main pipe 63, and the airflow from the air pipe 61 carries the yarn into the guide pipe 64. The guide pipe 64 has an axial slot 65 on its wall. The slot 65 keeps the yarn stable under airflow conditions, ensuring that the yarn moves easily during yarn storage and supply activities, and effectively solving the problems of yarn 11 swaying and tangling near the inlet 41.

[0037] After the yarn 11 enters the yarn storage chamber 5, it falls from the top to the bottom and then returns from the bottom to the top, exiting from the outlet 42, which is also located at the top of the yarn storage box 4. The trajectory of the yarn 11 in the yarn storage chamber 5 roughly forms a parabola, with the lowest point forming a trough. The length of the parabola trajectory can be regarded as the amount of yarn 11 stored in the yarn storage chamber 5.

[0038] To facilitate the introduction of yarn 11, the inlet 41 is located on the top surface of the yarn storage box 5. Simultaneously, the outlet 42 is maintained at a distance from the inlet 41. This ensures that the opening size of the parabolic trajectory of yarn 11 within the yarn storage cavity 5 is appropriate, preventing the yarn 11 on both sides from colliding, tangling, or curling. The outlet 42 can be located on the top surface or the upper side of the yarn storage box 4. In this embodiment, the upper side is used as an example, thus fully utilizing the length of the yarn storage cavity 5 to ensure the opening of the parabolic trajectory. Additionally, an opening 43 can be formed at the bottom of the yarn storage box 4, allowing air inside the yarn storage cavity 5 to escape. This creates a downward suction force, maintaining the yarn 11 in a stable state and preventing it from swinging, floating, or tangling within the cavity, which could prevent the yarn from exiting smoothly through the outlet 42.

[0039] Based on the parabolic trajectory formed by the yarn 11 within the yarn storage box 4, the yarn contact cavity 5 within the yarn storage box 4 is preferably a flat rectangular cavity. Its length can accommodate the opening size of the parabola, its height can accommodate the height of the parabola, and its width allows for small forward and backward displacement of the parabola. Only when the proportions of these three aspects are within an appropriate range can the parabolic trajectory of the yarn 11 remain stable over a long period.

[0040] During the yarn storage process, the yarn 11 is constantly in a dynamic state. This invention installs a camera device 71 on the yarn storage box. The camera device 71 is fixed by a bracket 73 to monitor the situation inside the yarn storage chamber 5.

[0041] Combination Figure 2 When 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 its rotation, causing the yarn 11 to enter the yarn storage chamber 5 more quickly. When the amount of yarn 11 stored in the yarn storage chamber 5 is large, the servo motor 3 decelerates its rotation, causing the yarn 11 to enter the yarn storage chamber 5 at a slower speed, thus maintaining an appropriate amount of yarn stored.

[0042] To ensure the synchronization and precision of the entire yarn storage process, this invention is equipped with an electronic control system. The camera device 71 and servo motor 3 are both connected to the electronic control system, and data is processed and transmitted / received by a unified central controller. The electronic control system is installed inside the electronic control box 8. Therefore, in the overall device design, the yarn storage box 4 and the electronic control box 8 are combined to form a complete main box 9. One side of the main box 9 is the yarn storage box 4, and the other side is the electronic control box 8, sharing a common board 91 in the middle. All the aforementioned hardware and electrical components, including the camera device 71 and its bracket 73, servo motor 3, etc., can be installed inside the electronic control box 8.

[0043] To ensure the stability of yarn 11 during exit, a positioning process is required before yarn 11 exits. Therefore, a damping mechanism can be installed inside the yarn storage box 4, near the exit port 42. In this embodiment, the damping mechanism is a brush structure. Yarn 11 passes through the bristles of the brush structure and exits from the exit port 42. The brush structure includes two rows of aligned bristles, and yarn 11 passes through the middle of these two rows. This stabilizes the exit state of yarn 11.

[0044] Additionally, after the yarn exits, a trumpet-shaped guide shroud 45 is installed outside the exit port 42. The opening of the guide shroud 45 gradually decreases in size along the yarn exit direction. Therefore, when the yarn 11 first exits from the exit port 42, its speed and state are unstable. After being guided by the guide shroud 45, it gradually maintains a certain tension, eliminating any air pockets formed on the yarn.

[0045] The specific working process of the yarn storage method of this utility model is as follows:

[0046] The servo motor 3 is activated, and the yarn 11 is unwound from the yarn bobbin 1 along the circumferential tangential direction, falling into the yarn inlet 41. The nozzle 6 or guide tube on the yarn inlet 41, aided by airflow, propels the yarn 11 into the yarn storage box 4. Within the yarn storage chamber 5, the yarn 11 moves from top to bottom and then from bottom to top, forming a parabolic trajectory. After being positioned by a brush, it exits from the upper yarn outlet 42. A trumpet-shaped guide shroud 45 eliminates any air pockets formed by the yarn, supplying yarn for the next weaving step. A camera device monitors the dynamic trajectory of the yarn 11 in real time, ensuring that the yarn storage amount is always maintained at an appropriate level to meet the yarn supply requirements during weaving.

[0047] The above-described specific embodiments are merely preferred embodiments of this invention and are not intended to limit this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A yarn storage device, characterized in that: It includes a yarn storage box, with a yarn outlet and a yarn inlet at the two ends of the top of the yarn storage box. An airflow yarn guiding mechanism is installed at the yarn inlet, which faces the bottom of the yarn storage box. The yarn passes through the airflow yarn guiding mechanism and enters the yarn storage box.

2. The yarn storage device according to claim 1, characterized in that: The airflow 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 an air pipe, and external airflow is sprayed in along the yarn feeding direction to guide the yarn into the yarn storage box.

3. A yarn storage device according to claim 1, characterized in that: The airflow yarn guiding mechanism is in the form of a tubular component, including an upper main pipe and a lower guide pipe. The main pipe is connected to the air pipe on the side. The yarn enters downward from the inlet of the main pipe, and the airflow in the air pipe carries the yarn to the guide pipe. The guide pipe has axial grooves on its wall.

4. A yarn storage device according to claim 1, characterized in that: An air vent is provided at the bottom of the yarn storage box.

5. A yarn storage device according to claim 1, characterized in that: A horn-shaped lead shield is installed at the outlet.

6. A yarn storage device according to claim 1, characterized in that: A damping mechanism is installed on the cable outlet.

7. A yarn storage device according to claim 1, characterized in that: The damping mechanism is a brush.

8. A yarn storage device according to claim 1, characterized in that: An electrical control box is installed on the back of the yarn storage box, and a camera device is installed inside the electrical control box via a bracket.

9. A yarn storage device according to claim 7, characterized in that: The camera device has an observation area.

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