A weft yarn conveyor

Abstract

This application relates to the field of textile technology, and in particular to a weft yarn conveyor, including a conveying base, a weft yarn bobbin, an unwinding motor, a first roller, a second roller, and a third roller. The weft yarn bobbin is horizontally rotatably mounted on the conveying base and is driven to rotate and unwind by the unwinding motor. The first and second rollers are both mounted at the top of the unwinding frame, and the third roller is mounted below the first and second rollers, positioned between them. A water tank is installed inside the conveying base, and a lower roller frame is mounted on top of the water tank. The third roller is mounted on the lower roller frame via a roller seat and is vertically movable. A sensor is also installed on the lower roller frame to detect the height position of the third roller. A counterweight plate is suspended from the third roller by a rope, and the counterweight plate is suspended inside the water tank. This application can adaptively adjust the weft yarn tension to maintain a stable tension, thereby ensuring the subsequent weaving effect.

Description

Technical Field

[0001] This application relates to the field of textile technology, and in particular to a weft yarn conveyor. Background Technology

[0002] In the textile process, the weft yarn in the weft yarn bobbin needs to be unwound and conveyed to the subsequent loom for weaving. Currently, passive traction unwinding is commonly used in the weft yarn unwinding process. During this process, the tension of the weft yarn is prone to instability and is not easily compensated and adjusted in a timely manner, seriously affecting the subsequent weaving effect. In addition, existing weft yarn conveying tension adjustment technologies are mostly single-point, with a delayed response, and cannot achieve multi-point synchronous buffering, further affecting the stability of weft yarn conveying and textile quality. Summary of the Invention

[0003] In order to adaptively adjust the weft tension and maintain its stability to ensure the subsequent textile effect, this application provides a weft conveyor.

[0004] The weft yarn conveyor provided in this application adopts the following technical solution:

[0005] A weft yarn conveyor includes a conveying base frame, a weft yarn bobbin, an unwinding motor, a first roller, a second roller, and a third roller. The weft yarn bobbin is horizontally rotatably mounted at the top of the conveying base frame and is driven to rotate and unwind by the unwinding motor. The first roller and the second roller are both mounted at the top of the unwinding frame, and the third roller is mounted below the first roller and the second roller, and is arranged between the first roller and the second roller. A water tank is installed inside the conveying base frame, and a lower roller frame is installed on the top of the water tank. The third roller is mounted on the lower roller frame via a wheel seat, and the third roller is vertically movable. A sensor is also installed on the lower roller frame to detect the height position of the third roller. A counterweight plate is suspended from the third roller by a rope, and the counterweight plate is suspended inside the water tank.

[0006] By adopting the above technical solution, during the weft yarn feeding process, when the weft yarn tension is too high, the third roller is pulled upwards. At this time, the sensor can feed back the position information of the third roller to the unwinding motor, enabling the unwinding motor to control the unwinding speed of the weft yarn and thus adjust the weft yarn tension. Similarly, when the weft yarn tension is too low, under the action of the counterweight plate, the third roller is pulled downwards. At this time, the sensor can feed back the position information of the third roller to the unwinding motor, enabling the unwinding motor to control the unwinding speed of the weft yarn and thus adjust the weft yarn tension. This achieves adaptive adjustment of the tension during the weft yarn feeding process, ensuring that the tension remains stable and guaranteeing the subsequent weaving effect.

[0007] Furthermore, when the third roller is pulled upwards due to excessive weft tension, the counterweight plate moves upwards along with it. During this upward movement, the counterweight plate experiences water resistance, allowing the third roller to move upwards in a buffered manner. This prevents sudden, jerky fluctuations in tension and further ensures the stability of the subsequent unwinding motor's adjustment of the weft tension. Similarly, when the third roller is pulled downwards due to insufficient weft tension, the counterweight plate moves downwards along with it. During both its upward and downward movements, the counterweight plate experiences water resistance, allowing the third roller to move downwards in a buffered manner, further ensuring the stability of the subsequent unwinding motor's adjustment of the weft tension.

[0008] Optionally, both the first roller and the second roller can be detachably installed on the conveyor base frame.

[0009] By adopting the above technical solution, the first roller, the second roller and the conveyor base frame are detachably installed, which facilitates their subsequent disassembly and replacement.

[0010] Optionally, the lower wheel frame includes two L-shaped upright plates, which are arranged opposite to each other; each of the two L-shaped upright plates has a vertically extending strip groove, and a wheel seat is installed between the two L-shaped upright plates, with both ends of the wheel seat slidably installed in the two strip grooves; the third roller is rotatably installed on the wheel seat; the counterweight plate is suspended from the wheel seat by a rope, and a guide hole is provided at the top of the water tank, through which the rope passes to suspend the counterweight plate inside the water tank.

[0011] By adopting the above technical solution, the third roller is mounted on the lower wheel frame via a wheel seat, allowing it to slide vertically on the lower wheel frame. The sensor is fixedly mounted on the L-shaped vertical plate and positioned below the third roller.

[0012] Optionally, a first guide plate is also installed on the conveying base frame, and a guide eye is provided on the first guide plate; the first guide plate is installed on the input side of the first roller.

[0013] Optionally, a second guide plate is also installed on the conveying base frame, and the second guide plate has guide eyes; the first guide plate is installed on the output side of the second roller.

[0014] By adopting the above technical solution, in the actual working process, the unwound weft yarn is input after passing through the guide eye on the first guide plate, and then sequentially conveyed by the first roller, the third roller, and the second roller. Finally, it is output after passing through the guide eye on the second guide plate. This provides separate guidance for the input and output of the unwound weft yarn, thereby further ensuring the stability of the weft yarn conveying.

[0015] Optionally, both the first guide plate and the second guide plate are made of ceramic material.

[0016] By adopting the above technical solution, the surface smoothness of ceramics makes it less prone to friction and wear during the conveying process, thus ensuring the quality of weft yarn feeding.

[0017] Optionally, an upper wheel frame is fixedly installed on the conveying base frame. The first roller and the second roller are slidably installed on the upper wheel frame in the horizontal direction. The first roller, the second roller, and the third roller are connected by a Y-shaped linkage. When the third roller moves upward, the first roller and the second roller move away from each other under the control of the Y-shaped linkage. When the third roller moves downward, the first roller and the second roller move closer to each other under the control of the Y-shaped linkage.

[0018] By adopting the above technical solution, a triangular guiding pattern is formed between the first, second, and third rollers during the weft yarn conveying process. When the weft yarn tension is too high or too low, under the control of the Y-shaped linkage, the triangular structure formed between the first, second, and third rollers can be simultaneously tightened or simultaneously relaxed to perform preliminary buffering adjustment of the tension. In addition, in this application, since the first, second, and third rollers form a large triangular adjustment structure, multi-point simultaneous buffering adjustment of the weft yarn tension can be achieved. Compared with the single-point adjustment method, its buffering effect is better, and it can better ensure the control and adjustment of the stability of the weft yarn tension.

[0019] Optionally, the linkage includes an intermediate member, a first link, a second link, and a third link; one end of each of the first link, the second link, and the third link is hinged to the intermediate member, and the end of the first link away from the intermediate member is hinged to the slide block where the first roller is located; the end of the second link away from the intermediate member is hinged to the slide block where the second roller is located; the third link is vertically arranged and slides vertically on the lower wheel frame; and the wheel seat where the third roller is located is fixedly connected to the third link.

[0020] By adopting the above technical solution, the first, second, and third links form a Y-shaped structure through an intermediate component, and relative rotation can occur between the first, second, and third links and the intermediate component. In actual use, when the third roller moves upward, the first and second rollers move away from each other under the control of the Y-shaped linkage; when the third roller moves downward, the first and second rollers move closer to each other under the control of the Y-shaped linkage. Furthermore, since the third link is vertically arranged and slides vertically along the lower wheel frame, the movement stability of the third link can be better guaranteed.

[0021] Optionally, a vertical sliding rail is fixed on the lower wheel frame, and the third link is slidably mounted on the vertical sliding rail via a slider.

[0022] Optionally, the wheel seat and the third link are detachably connected.

[0023] By adopting the above technical solution, since the wheel seat and the third link are detachably connected, the wheel seat and the third roller can be disassembled and replaced or disassembled and repaired in the future.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. During weft yarn feeding, when the weft yarn tension is too high, the third roller is pulled upwards. At this time, the sensor can feed back the position information of the third roller to the unwinding motor, enabling the unwinding motor to control the unwinding speed of the weft yarn and adjust the weft yarn tension. Similarly, when the weft yarn tension is too low, the third roller is pulled downwards under the action of the counterweight. The sensor can then feed back the position information of the third roller to the unwinding motor, enabling the unwinding motor to control the unwinding speed and adjust the weft yarn tension. This adaptive adjustment of tension during weft yarn feeding ensures stable tension and guarantees subsequent weaving results. Furthermore, when the third roller is pulled upwards due to excessive weft yarn tension, the counterweight moves upwards along with the third roller. During this upward movement, the counterweight encounters water resistance, allowing the third roller to move upwards in a buffered manner. This prevents sudden fluctuations in tension and further ensures the stability of the unwinding motor's adjustment of the weft yarn tension. Similarly, when the third roller is pulled down due to insufficient weft tension, the counterweight plate moves down with the third roller. The counterweight plate is resisted by water during its upward movement, and it is also resisted by water during its downward movement, which allows the third roller to move down in a buffered manner, so as to further ensure the stability of the subsequent unwinding motor in adjusting the weft tension.

[0026] 2. In actual operation, the unwound weft yarn is fed into the first guide plate through the guide eye, then sequentially conveyed by the first roller, the third roller, and the second roller, and finally output through the guide eye on the second guide plate. This guides the input and output of the unwound weft yarn separately to further ensure the stability of the weft yarn conveying.

[0027] 3. During the weft yarn feeding process, the first, second, and third rollers form a triangular guiding pattern. When the weft yarn tension is too high or too low, under the control of the Y-shaped linkage, the triangular structure formed by the first, second, and third rollers can simultaneously tighten or expand to provide initial buffering adjustment of the tension. Furthermore, in this application, because the first, second, and third rollers form a large triangular adjustment structure, multi-point simultaneous buffering adjustment of the weft yarn tension is possible. Compared to single-point adjustment, this buffering effect is better, and it can better ensure the stable control and adjustment of the weft yarn tension. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0029] Figure 2 This is a cross-sectional view of the water tank portion in Embodiment 1 of this application.

[0030] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0031] Figure 4 This is a schematic diagram of the connection between the first roller, the second roller, the third roller, and the Y-shaped linkage in Embodiment 2 of this application.

[0032] Figure 5 yes Figure 4 Enlarged view of section A in the middle.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Conveying base frame; 11. Weft yarn drum; 12. Unwinding motor; 13. First guide plate; 14. Second guide plate; 2. First roller; 3. Second roller; 4. Third roller; 5. Water tank; 6. Lower wheel frame; 61. Sensor; 62. Lifting rope; 63. Counterweight plate; 64. Strip groove; 7. Wheel seat; 71. Guide rod; 72. Locking nut; 8. Upper wheel frame; 81. Horizontal slide rail; 9. Y-type linkage rod; 91. First connecting rod; 92. Second connecting rod; 93. Third connecting rod; 94. Intermediate component; 95. Connecting piece. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0036] This application discloses a weft yarn conveyor.

[0037] Example 1:

[0038] Reference Figure 1A weft yarn conveyor includes a conveying base 1, a weft yarn bobbin 11, an unwinding motor 12, a first roller 2, a second roller 3, and a third roller 4. The weft yarn bobbin 11 is horizontally positioned and rotatably mounted at the top of the conveying base 1, and is driven to rotate and unwind by the unwinding motor 12. The first roller 2 and the second roller 3 are both mounted at the top of the unwinding frame, and the third roller 4 is mounted below the first roller 2 and the second roller 3, positioned between the first roller 2 and the second roller 3. Under the control of the unwinding motor 12, the weft yarn is unwound from the weft yarn bobbin 11, then guided and conveyed sequentially by the first roller 2, the second roller 3, and the third roller 4, before being fed into a subsequent loom for weaving.

[0039] Reference Figure 1 and Figure 2 Specifically, in this embodiment, a water tank 5 is installed inside the conveying base frame 1, and the water tank 5 is positioned below the first roller 2 and the second roller 3. A lower wheel frame 6 is installed on top of the water tank 5, and a third roller 4 is mounted on the lower wheel frame 6 via a wheel seat 7, and the third roller 4 is vertically movable. A sensor 61 is also installed on the lower wheel frame 6 for detecting the height position of the third roller 4.

[0040] Reference Figure 2 A counterweight plate 63 is suspended from the third roller 4 by a rope 62. The top of the rope 62 is connected to the wheel seat 7, and the counterweight plate 63 is suspended inside the water tank 5. In this embodiment, the water tank 5 is filled with water; in other embodiments, the water tank 5 may be filled with other types of solutions.

[0041] During the weft yarn feeding process, when the weft yarn tension is too high, the third roller 4 is pulled upwards. At this time, the sensor 61 can feed back the position information of the third roller 4 to the unwinding motor 12, enabling the unwinding motor 12 to control the unwinding speed of the weft yarn to adjust the weft yarn tension. Similarly, when the weft yarn tension is too low, under the action of the counterweight plate 63, the third roller 4 is pulled downwards. At this time, the sensor 61 can feed back the position information of the third roller 4 to the unwinding motor 12, enabling the unwinding motor 12 to control the unwinding speed of the weft yarn to adjust the weft yarn tension. This achieves adaptive adjustment of the tension during the weft yarn feeding process, ensuring that the tension remains stable and guaranteeing the subsequent weaving effect.

[0042] Furthermore, when the third roller 4 is pulled upwards due to excessive weft tension, the counterweight plate 63 moves upwards along with it. During this upward movement, the counterweight plate 63 experiences water resistance, allowing the third roller 4 to move upwards in a buffered manner. This prevents the third roller 4 from experiencing sudden, jerky fluctuations due to tension variations, thus achieving a buffering effect and further ensuring the stability of the subsequent unwinding motor 12's adjustment of the weft tension. Similarly, when the third roller 4 is pulled downwards due to insufficient weft tension, the counterweight plate 63 moves downwards along with it. During both its upward and downward movements, the counterweight plate 63 experiences water resistance, allowing the third roller 4 to move downwards in a buffered manner, achieving a buffering effect and further ensuring the stability of the subsequent unwinding motor 12's adjustment of the weft tension.

[0043] Reference Figure 1 Specifically, in this embodiment, the first roller 2 and the second roller 3 are both rotatably mounted on the upper wheel frame 8. The upper wheel frame 8 is horizontally set, and both ends of the upper wheel frame 8 are fixedly connected to the conveying base frame 1 by screws, so that the first roller 2 and the second roller 3 are detachably mounted to the conveying base frame 1, which facilitates subsequent disassembly and replacement.

[0044] Reference Figure 2 Specifically, in this embodiment, the lower wheel frame 6 includes two L-shaped upright plates, which are arranged opposite to each other. Each of the two L-shaped upright plates has a vertically extending slot 64. A wheel seat 7 is installed between the two L-shaped upright plates, and both ends of the wheel seat 7 are slidably installed within the two slots 64. A third roller 4 is rotatably mounted on the wheel seat 7, allowing the third roller 4 to be slidably mounted vertically on the lower wheel frame 6. A sensor 61 is fixedly mounted on the L-shaped upright plate, and the sensor 61 is positioned below the third roller 4.

[0045] Specifically, in this embodiment, the counterweight plate 63 is suspended from the wheel seat 7 by the suspension rope 62, and a guide hole is provided on the top of the water tank 5. The suspension rope 62 passes through the guide hole to suspend the counterweight plate 63 in the water tank 5.

[0046] Reference Figure 1 In this embodiment, a first guide plate 13 and a second guide plate 14 are also installed on the conveying base 1, and both the first guide plate 13 and the second guide plate 14 are provided with guide eyes. The first guide plate 13 is installed on the input side of the first roller 2, and the second guide plate 14 is installed on the output side of the second roller 3. In actual operation, the unwound weft yarn is input after passing through the guide eye on the first guide plate 13, and then sequentially conveyed by the first roller 2, the third roller 4, and the second roller 3. Finally, it is output after passing through the guide eye on the second guide plate 14, so as to guide the input and output of the unwound weft yarn respectively, so as to further ensure the stability of the weft yarn conveying.

[0047] In this embodiment, both the first guide plate 13 and the second guide plate 14 are made of ceramic material. Because ceramic has a smooth surface, the weft yarn is less prone to friction and wear during transport, thus ensuring the quality of the weft yarn feed.

[0048] The implementation principle is as follows:

[0049] Under the control of the unwinding motor 12, the weft yarn is unwound on the weft yarn cylinder 11. After unwinding, the weft yarn is input after passing through the guide eye on the first guide plate 13, and then sequentially conveyed by the first roller 2, the third roller 4, and the second roller 3. Finally, it is output after passing through the guide eye on the second guide plate 14 and sent into the subsequent loom for weaving processing.

[0050] During the weft yarn feeding process, when the weft yarn tension is too high, the third roller 4 is pulled upwards to provide initial buffering and adjustment of the tension. Simultaneously, the sensor 61 feeds back the position information of the third roller 4 to the unwinding motor 12, enabling the unwinding motor 12 to control the weft yarn unwinding speed to adjust the weft yarn tension. Similarly, when the weft yarn tension is too low, the third roller 4 is pulled downwards under the action of the counterweight plate 63 to provide initial buffering and adjustment of the tension. Simultaneously, the sensor 61 feeds back the position information of the third roller 4 to the unwinding motor 12, enabling the unwinding motor 12 to control the weft yarn unwinding speed to adjust the weft yarn tension. This adaptive adjustment of the tension during the weft yarn feeding process ensures stable tension and guarantees subsequent weaving results.

[0051] Furthermore, when the third roller 4 is pulled upwards due to excessive weft tension, the counterweight plate 63 moves upwards along with it. During this upward movement, the counterweight plate 63 experiences water resistance, allowing the third roller 4 to move upwards in a buffered manner. This prevents the third roller 4 from experiencing sudden, jerky fluctuations due to tension variations, thus achieving a buffering effect and further ensuring the stability of the subsequent unwinding motor 12's adjustment of the weft tension. Similarly, when the third roller 4 is pulled downwards due to insufficient weft tension, the counterweight plate 63 moves downwards along with it. During both its upward and downward movements, the counterweight plate 63 experiences water resistance, allowing the third roller 4 to move downwards in a buffered manner, achieving a buffering effect and further ensuring the stability of the subsequent unwinding motor 12's adjustment of the weft tension.

[0052] Example 2:

[0053] The difference between this embodiment and embodiment 1 is that the installation methods of the first roller 2, the second roller 3, and the third roller 4 are different.

[0054] Reference Figure 3 and Figure 4Specifically, in this embodiment, a horizontal slide rail 81 is provided on the upper wheel frame 8, and two slide blocks are slidably provided on the horizontal slide rail 81. The first roller 2 and the second roller 3 are respectively rotatably installed on the two slide blocks, so that the first roller 2 and the second roller 3 can move towards each other or away from each other.

[0055] The first roller 2, the second roller 3, and the third roller 4 are connected by a Y-shaped linkage 9. The linkage includes a first link 91, a second link 92, a third link 93, and an intermediate member; wherein, one end of the first link 91, the second link 92, and the third link 93 are all hinged to the intermediate member to form a Y-shaped structure, and the other end of the first link 91 is hinged to the slide block where the first roller 2 is located, the other end of the second link 92 is hinged to the slide block where the second roller 3 is located, the third link 93 is vertically arranged and slides vertically on the lower wheel frame 6, and the wheel seat 7 where the third roller 4 is located is fixedly connected to the third link 93.

[0056] During the weft yarn feeding process, the first roller 2, the second roller 3, and the third roller 4 form a triangular guiding pattern. When the weft yarn tension is too high or too low, under the control of the Y-shaped linkage 9, the triangular structure formed by the first roller 2, the second roller 3, and the third roller 4 can simultaneously tighten or relax, thus performing preliminary buffering adjustment of the tension. Furthermore, in this application, because the first roller 2, the second roller 3, and the third roller 4 form a large triangular adjustment structure, multi-point simultaneous buffering adjustment of the weft yarn tension can be achieved. Compared with single-point adjustment, its buffering effect is better, and it can better ensure the control and adjustment of the stability of the weft yarn tension.

[0057] Reference Figure 5 Specifically, in this embodiment, guide rods 71 ​​are provided at both ends of the wheel seat 7, and the two guide rods 71 ​​are slidably disposed in the two strip grooves 64 in the lower wheel frame 6. A connecting piece 95 is fixedly connected to the third connecting rod 93. The connecting piece 95 passes through the guide rod 71 on its side and is clamped and fixed by two locking nuts 72 threaded on the guide rod 71 to form a detachable connection, so as to facilitate subsequent disassembly and replacement or disassembly and maintenance of the wheel seat 7 and the third roller 4.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A weft yarn conveyor, characterized in that, include: Conveying base frame (1), weft yarn cylinder (11), unwinding motor (12), first roller (2), second roller (3) and third roller (4); The weft yarn cylinder (11) is horizontally rotated and installed at the top of the conveyor base frame (1), and is driven to rotate and unwind by the unwinding motor (12); The first roller (2) and the second roller (3) are both installed at the top of the conveying base frame (1), and the third roller (4) is installed below the first roller (2) and the second roller (3), and the third roller (4) is arranged between the first roller (2) and the second roller (3); A water tank (5) is installed inside the conveying base frame (1). A lower wheel frame (6) is installed on the top of the water tank (5). The third roller (4) is installed on the lower wheel frame (6) through the wheel seat (7), and the third roller (4) can be moved vertically. A sensor (61) is also installed on the lower wheel frame (6) to detect the height position of the third roller (4); A counterweight plate (63) is also suspended on the third roller (4) by a rope (62), and the counterweight plate (63) is suspended inside the water tank (5); Among them, an upper wheel frame (8) is fixedly installed on the conveying base frame (1). The first roller (2) and the second roller (3) are slidably installed on the upper wheel frame (8) in the horizontal direction. The first roller (2), the second roller (3) and the third roller (4) are connected by a Y-type linkage rod (9). When the third roller (4) moves upward, the first roller (2) and the second roller (3) move away from each other under the control of the Y-type linkage rod (9). When the third roller (4) moves downward, the first roller (2) and the second roller (3) move closer to each other under the control of the Y-type linkage rod (9). Furthermore, the Y-type linkage (9) includes a first link (91), a second link (92), a third link (93), and an intermediate component (94); One end of the first link (91), the second link (92), and the third link (93) are all hinged to the intermediate member (94). The end of the first link (91) away from the intermediate member (94) is hinged to the slide block where the first roller (2) is located. The end of the second link (92) away from the intermediate member (94) is hinged to the slide block where the second roller (3) is located. The third link (93) is vertically set and slides vertically on the lower wheel frame (6). The wheel seat (7) where the third roller (4) is located is fixedly connected to the third link (93). A vertical sliding rail is fixed on the lower wheel frame (6). The third link (93) is slidably installed on the vertical sliding rail by a slider. The wheel seat (7) and the third link (93) are detachably connected.

2. The weft yarn conveyor according to claim 1, characterized in that: Both the first roller (2) and the second roller (3) can be detachably installed on the conveyor base frame (1).

3. The weft yarn conveyor according to claim 1, characterized in that: The lower wheel frame (6) includes two L-shaped uprights, and the two L-shaped uprights are arranged opposite to each other; Both L-shaped uprights are provided with vertically extending strip grooves (64), and wheel seats (7) are installed between the two L-shaped uprights. The two ends of the wheel seats (7) are slidably installed in the two strip grooves (64). The third roller (4) is rotatably mounted on the wheel seat (7); The counterweight plate (63) is suspended from the wheel seat (7) by a rope (62). A guide hole is provided on the top of the water tank (5). The rope (62) passes through the guide hole to suspend the counterweight plate (63) inside the water tank (5).

4. A weft yarn conveyor according to claim 1, characterized in that: The conveying base frame (1) is also equipped with a first guide plate (13), and the first guide plate (13) is provided with a guide eye; The first guide plate (13) is installed on the input side of the first roller (2).

5. A weft yarn conveyor according to claim 4, characterized in that: The conveying base frame (1) is also equipped with a second guide plate (14), and the second guide plate (14) is provided with guide holes; The second guide plate (14) is installed on the output side of the second roller (3).

6. A weft yarn conveyor according to claim 5, characterized in that: Both the first guide plate (13) and the second guide plate (14) are made of ceramic material.

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