A thread accumulator

Abstract

The embodiment of the present application provides a weft accumulator, which comprises a shell, a yarn guide and a weft accumulator drum. The yarn guide comprises a body part and a limiting part mounted on the body part. The body part is provided with a channel, and the limiting part is provided with a first through hole and a second through hole. The first through hole is communicated with a yarn outlet of the channel. The second through hole is located at one end of the limiting part away from the body part. The limiting part is an integrated structure. Through the design, the first through hole with the yarn guiding function and the second through hole with the yarn restraining function can be integrated, the production and installation costs can be reduced, the tension fluctuation of weft can be reduced, and the weaving quality can be improved.

Description

Technical Field

[0001] This application relates to the field of weaving technology, and more particularly to a weft feeder. Background Technology

[0002] The weft feeder is a crucial component in the weaving process. It is typically used to pre-store the weft yarn, allowing it to be released freely to a predetermined position later by applying a driving force to the weft yarn via the weft inserter. However, during weft yarn flight, tension fluctuations can easily occur, leading to yarn breakage and affecting weaving quality. Utility Model Content

[0003] This application provides a weft feeder for improving weaving quality.

[0004] This application provides a weft feeder, which includes a housing, a yarn guide, and a weft drum. The yarn guide and the weft drum are mounted on the housing, and the yarn guide is rotatable relative to the weft drum. The yarn guide includes a body and a limiting member. The body is provided with a channel. Along the extending direction of the channel, one end of the channel is provided with a yarn inlet and the other end is provided with a yarn outlet. The limiting member is provided at the yarn outlet. The limiting member includes a main body that extends in a direction close to the weft storage drum and is provided with a first through hole and a second through hole at intervals along its length. The first through hole communicates with the yarn outlet, and the second through hole is located at the end of the limiting member away from the channel. The limiting component is a one-piece molded structure.

[0005] In one possible implementation, in the projection along the length direction of the limiting member, the axis of the first through hole and the axis of the second through hole have an included angle α, the degree of which is 45°≤α≤90°.

[0006] In one possible implementation, the main body includes a first main body, a second main body, and a transition section. The first main body is connected to the main body, the transition section connects the first main body and the second main body, and the first through hole is disposed in the first main body and the second through hole is disposed in the second main body. Along the direction close to the second main body, the width of the transition section gradually decreases, and / or the thickness gradually increases.

[0007] In one possible implementation, the distance between the wall of the first through hole and the edge of the first main body is 2 mm to 5 mm along the width direction of the limiting member.

[0008] In one possible implementation, the width of the transition section near the end of the first main body is 8 to 10 millimeters.

[0009] In one possible implementation, at least a portion of the wall of the first through hole is arc-shaped, and / or, at least a portion of the wall of the second through hole is arc-shaped.

[0010] In one possible implementation, the angle between the length direction of the limiting member and the weft storage drum is β, and 40°≤β≤70°.

[0011] In one possible implementation, the main body portion is provided with a notch portion that communicates with the second through hole and extends through at least one edge of the main body portion.

[0012] In one possible implementation, at least a portion of the notch is located in the transition section of the main body.

[0013] In one possible implementation, the limiting member includes a first extension that extends along the thickness direction of the limiting member. At least a portion of the first extension extends into the channel along the yarn outlet.

[0014] In one possible implementation, the first extension section is provided with at least one first limiting groove, the main body is provided with at least one second limiting groove, and the yarn guide further includes a first connector that extends into the first limiting groove and the second limiting groove.

[0015] In one possible implementation, the first extension includes at least two first limiting grooves, which are located on opposite sides of the first extension along the width direction of the limiting member. The main body is provided with at least two second limiting grooves, and the second limiting grooves are provided corresponding to the first limiting grooves.

[0016] In one possible implementation, the size of the first limiting groove is 0.3 mm to 2.7 mm along the thickness direction of the limiting member.

[0017] In one possible implementation, along the thickness direction of the limiting member, the distance between the first limiting groove and the end of the first extension near the main body is 0.45 mm to 0.65 mm, and / or; Along the thickness direction of the limiting member, the distance between the first limiting groove and the end of the first extension away from the main body is 0.85 mm to 1.05 mm.

[0018] In one possible implementation, the first extension has a length of 2 to 4 millimeters along the thickness direction of the limiting member.

[0019] In one possible implementation, the limiting member includes at least one second extension extending along the width direction of the limiting member, and the second extension has a third through hole. The yarn guide includes a second connector, at least a portion of which is located in the third through hole. The second connector is used to connect the limiting member and the body portion.

[0020] In one possible implementation, the limiting member includes at least two second extension segments disposed on opposite sides of the limiting member along the width direction of the limiting member.

[0021] In one possible implementation, the second extension is provided with an abutting surface that abuts against the main body. The abutting surface is an arc-shaped surface with a radius of 145 mm to 155 mm.

[0022] In one possible implementation, the size of the limiting member is 32 mm to 60 mm along its length.

[0023] In one possible implementation, the limiting member is detachably connected to the body portion.

[0024] In one possible implementation, the body portion is a yarn guide disc.

[0025] This application provides a weft feeder, which includes a housing, a yarn guide, and a weft drum. The yarn guide includes a main body and a limiting member mounted on the main body. The main body has a channel, and the limiting member has a first through hole and a second through hole. The first through hole communicates with the yarn outlet of the channel. The second through hole is located at the end of the limiting member away from the main body. The limiting member is an integrally formed structure. This design integrates the first through hole, which guides the yarn, and the second through hole, which holds the yarn, reducing production and installation costs and helping to reduce weft tension fluctuations, thereby improving weaving quality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the weft feeder provided in an embodiment of this application; Figure 2 This is a schematic diagram of the body portion provided in an embodiment of this application; Figure 3 for Figure 2 A sectional view; Figure 4 for Figure 1 A schematic diagram showing the weft yarn wound around the weft feeder; Figure 5 for Figure 1 A magnified view of the central position (I). Figure 6 This is a schematic diagram of the yarn guide provided in the embodiments of this application; Figure 7 A schematic diagram of another embodiment of the weft feeder provided in this application; Figure 8 for Figure 7 A magnified view of a portion of position II; Figure 9 A schematic diagram of one embodiment of the weft feeder provided in this application; Figure 10 This is a schematic diagram of the yarn guide provided in an embodiment of this application; Figure 11 for Figure 10 A sectional view; Figure 12 for Figure 9 A schematic diagram showing the weft yarn wound around the weft feeder; Figure 13 This is a schematic diagram of the yarn guide and weft storage drum provided in the embodiments of this application; Figure 14 A schematic diagram of the limiting member provided in the embodiments of this application; Figure 15 for Figure 14 A diagram from another perspective; Figure 16 for Figure 9 A magnified view of a portion of position III; Figure 17 for Figure 14 A schematic diagram from another perspective; Figure 18 This is a schematic diagram of another embodiment of the limiting member provided in the embodiments of this application; Figure 19 A schematic diagram of yet another embodiment of the limiting member provided in this application; Figure 20 A schematic diagram of yet another embodiment of the limiting member provided in this application; Figure 21 for Figure 20 A diagram from another perspective; Figure 22 A cross-sectional view of another embodiment of the body portion provided in this application; Figure 23 for Figure 22 A magnified view of a portion of position IV; Figure 24 for Figure 10 A diagram from another perspective; Figure 25 for Figure 24 A magnified view of the middle V position; Figure 26 for Figure 24 A partial sectional view; Figure 27 for Figure 20 A diagram from another perspective; Figure 28 for Figure 20 A schematic diagram from another perspective; Figure 29 This is a schematic diagram of another embodiment of the yarn guide provided in the embodiments of this application; Figure 30 This is a schematic diagram of yet another embodiment of the body portion provided in this application.

[0027] Figure Labels 1-Shell; 2- Yarn guide; 21-Ontology part; 211-Channel; 212 - Yarn inlet; 213 - Yarn exit point; 214 - Second limiting groove; 215 - Installation Department; 216 - First support rod; 217 - Second support rod; 22-Limiting component; 221-Main body; 221a - First main body section; 221b - Transition section; 221c - Second main body section; 221d - Notch; 222 - First through hole; 223 - Second through hole; 224 - First extension; 224a - First limiting groove; 225 - Second extension; 225a - Third through hole; 23-First connector; 3-Weft storage drum; 4- Yarn guiding section; 5- Yarn-binding section; 51-Mounting bracket; 52- Yarn-holding ring; 53-Connecting part; 6-Weft yarn. Detailed Implementation

[0028] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0029] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0030] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0032] The weft feeder is a crucial component in the weaving process. It stores weft yarn, allowing it to be released freely to a predetermined position later in the weaving process by applying a driving force to the weft yarn wound on the feeder. By employing a weft feeder, an unstable weft yarn supply can be transformed into a stable, controllable, and high-speed supply, thereby improving weaving efficiency and quality.

[0033] like Figure 1 As shown, the weft feeder includes a housing 1, a yarn guide 2, a drive device (not shown), and a weft drum 3. The yarn guide 2, drive device, and weft drum 3 are all mounted on the housing 1. The yarn guide 2 is located between the drive device and the weft drum 3. The output shaft of the drive device can be connected to the yarn guide 2 to drive the yarn guide 2 to rotate around the weft drum 3. Figure 2 and Figure 3 As shown, the main body 21 of the yarn guide 2 has a channel 211, one end of which is provided with a yarn inlet 212, and the other end is provided with a yarn outlet 213. Figure 4 As shown, Figure 4 The thick solid line in the diagram is used to indicate the weft yarn 6. When the weft yarn 6 enters the weft feeder, it can exit from the housing 1 ( Figure 4The weft yarn 6 (not shown) enters the weft storage device through the threading hole at its tail end. The threading hole is connected to the yarn inlet 212 of channel 211. After entering the weft storage device, the weft yarn 6 can enter channel 211 along the yarn inlet 212 and exit along the yarn outlet 213. Tools such as yarn guides can be used for manual threading. When the yarn guide 2 rotates around the weft storage drum 3, it can drive the weft yarn 6 to move around the weft storage drum 3, thereby winding the weft yarn 6 onto the weft storage drum 3 for storage. The winding method of the weft yarn 6 is as follows... Figure 5 As shown. Typically, the yarn outlet 213 is equipped with a yarn guide 4, which has a first through hole 222 through which the weft yarn 6 passes. The wall of the first through hole 222 can be arc-shaped, and the overall shape of the first through hole 222 can be a trumpet shape. The arc-shaped wall can guide the movement of the weft yarn 6, thus playing a guiding role. At the same time, the arc-shaped wall is smoother overall, which can reduce the friction on the weft yarn 6, further improving the guiding effect of the yarn guide 4, improving the stability of the weft yarn 6's movement, and thus improving the weaving quality. The material of the yarn guide 4 can be ceramic. By guiding the yarn through the first through hole 222, the stability of the weft yarn 6's movement can be improved, and the tension fluctuation of the weft yarn 6 can be reduced, thereby reducing the possibility of yarn jamming or sluggishness during the operation of the weft feeder. Meanwhile, the yarn outlet 213 is located on one side of the weft storage drum 3 along its radial direction. After the weft yarn 6 extends from the yarn outlet 213, it needs to bend towards the weft storage drum 3. Therefore, the weft yarn 6 will rub against the yarn outlet 213. The material of the body 21 of the yarn guide 2 is usually plastic, metal, etc. Direct contact between the weft yarn 6 and the body 21 can easily lead to yarn breakage. By providing the yarn guide 4, the friction experienced by the weft yarn 6 can be reduced. The weft yarn 6 passes through the first through hole 222 while exiting the channel 211. When the weft yarn 6 bends, it contacts the wall of the first through hole 222. Since ceramic materials have high wear resistance, low coefficient of friction, and good chemical stability, the obstruction of the yarn guide 2 on the weft yarn 6 can be reduced when the weft yarn 6 moves at high speed, thereby reducing the possibility of yarn breakage.

[0034] However, during the flight of weft yarn 6, even if the weft yarn 6 pre-stored on the weft storage device is released, the flying weft yarn 6 still has a large moving speed. If the weft yarn 6 is suddenly stopped, defects may appear on the fabric surface, or the weft yarn 6 may be torn. This is not conducive to the efficient and high-quality continuous operation of weaving.

[0035] like Figure 7 and Figure 8As shown, in one possible embodiment, the yarn guide 2 further includes a yarn holding part 5, which is also disposed on the main body 21. The yarn holding part 5 and the yarn guide 4 are located on opposite sides of the weft storage drum 3 along the radial direction of the weft storage drum 3, that is, the yarn holding part 5 is disposed at a position 180° apart from the yarn outlet 213, and their positions can be symmetrical about the central axis of the yarn guide 2. The yarn holding part 5 is provided with a second through hole 223, through which the weft yarn 6 can pass.

[0036] In use, the weft yarn 6 is first inserted into the channel 211 through the yarn inlet 212 and then out through the first through hole 222 of the yarn guide part 4 through the yarn outlet 213. The weft yarn 6, which has passed through the first through hole 222, is wound around the weft storage drum 3 a certain number of times and wound to the side where the yarn holding part 5 is located. The weft yarn 6 then passes through the second through hole 223 of the yarn holding part 5. After passing through the second through hole 223, the weft yarn 6 continues to be wound around the weft storage drum 3. The winding method of the weft yarn 6 is as follows: Figure 7 As shown.

[0037] Usually, such as Figure 8 As shown, a mounting bracket 51 is required when installing the yarn-holding part 5. The mounting bracket 51 can be installed on the main body 21 by means of bonding, welding, etc. The mounting bracket 51 has a mounting hole with threads on the inner wall of the mounting hole. The mounting bracket 51 is set on the main body 21. The yarn-holding part 5 includes a yarn-holding ring 52 of ceramic part and a connecting part 53 of metal part. The connecting part 53 can be a threaded structure such as a bolt. The yarn-holding ring 52 is provided with a second through hole 223. The yarn-holding ring 52 covers one end of the connecting part 53. The other end of the connecting part 53 can extend into the mounting hole and be threaded into the mounting hole to install the yarn-holding ring 52 on the main body 21. In order to improve the installation stability, a nut or other connecting parts can be further provided, or bonding can be used.

[0038] When the weft yarn 6 is pre-stored, the guide yarn 2 is driven to rotate by the drive device, causing the weft yarn 6 to wind around the weft storage drum 3. When the weft yarn 6 is released, it is freely released to the preset position under the action of the weft guide body. When the weft yarn 6 in the weft storage drum 3 is tensioned by the restraint ring, the restraint ring has a certain restraining effect on the freely released weft yarn 6, thereby gradually reducing the flight speed of the weft yarn 6. This design can effectively adjust the tension of the weft yarn 6, reduce the peak tension of the weft yarn 6, thereby reducing the possibility of weft yarn breakage and improving the quality and efficiency of the weaving process.

[0039] However, while this design can adjust the tension of the weft yarn 6, the distance between the yarn guide part 5 and the yarn exit 213 makes it inconvenient to operate the yarn guide part 5 by moving it from one side of the weft feeder to the other. Furthermore, the production of the weft feeder requires the yarn guide part 4 and the yarn guide part 5 to be installed at different locations on the main body 21. These parts need to be processed and installed separately, resulting in a complex manufacturing process, low production efficiency, and high production costs.

[0040] Therefore, embodiments of this application provide a weft feeder for improving weaving quality and reducing production costs.

[0041] This application provides a weft feeder, which is used to store weft yarns 6 during the weaving process. For example... Figure 9 As shown, the weft feeder includes a housing 1, a drive device (not shown), a yarn guide 2, and a weft feed drum 3. The yarn guide 2 and the weft feed drum 3 are mounted on the housing 1. The yarn guide 2 can rotate relative to the weft feed drum 3 under the drive of the drive device to wind the weft yarn 6 onto the weft feed drum 3, thereby performing weft feeding. Figure 10 As shown, the yarn guide 2 includes a body portion 21 and a limiting member 22 mounted on the body portion 21. Figure 11 As shown, the main body 21 is provided with a channel 211. Along the extending direction of the channel 211, one end of the channel 211 is provided with a yarn inlet 212, and the other end is provided with a yarn outlet 213. A limiting member 22 is provided at the yarn outlet 213. The main body 221 of the limiting member 22 is provided with a first through hole 222 and a second through hole 223. The first through hole 222 and the second through hole 223 are spaced apart along the length direction of the main body 221 and penetrate through the main body 221. The first through hole 222 communicates with the yarn outlet 213, and the second through hole 223 is provided at the end of the limiting member 22 away from the channel 211. The first through hole 222 is used to guide the yarn, and the second through hole 223 is used to hold the yarn. The limiting member 22 is an integrally formed structure and extends along the direction close to the weft storage drum 3. The material is usually ceramic.

[0042] like Figure 12As shown, in use, the weft yarn 6 is threaded into the weft storage device, entering the channel 211 through the yarn inlet 212 and exiting through the yarn outlet 213. During threading, tools such as a yarn guide can be used. The first through hole 222 of the limiting member 22 communicates with the yarn outlet 213. When the weft yarn 6 exits from the yarn outlet 213, it can pass through the first through hole 222. The weft yarn 6 exiting through the channel 211 is first wound around the weft storage drum 3 a certain number of times. Specifically, the number of wound turns can be 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, etc., before passing through the second through hole 223 of the limiting member 22, and then continuing to be wound around the weft storage drum 3. During winding, the weft yarn 6 typically only needs to contact the walls of the first through hole 222 and the second through hole 223.

[0043] In the solution provided by this application embodiment, the second through hole 223, which has a yarn-holding function, can be placed near the yarn outlet 213 to shorten the distance between the second through hole 223 and the yarn outlet 213. Compared to the solution where the yarn-holding part 5 is placed at a position 180° away from the yarn outlet 213, the solution provided by this application embodiment has less yarn between the yarn outlet 213 and the second through hole 223 when winding the yarn. It typically requires half a turn less than the solution where the yarn-holding part 5 is placed at a position 180° away from the yarn outlet 213, thus reducing the length of the wound weft yarn 6. When the speed of the weft yarn 6 changes, the fluctuations caused by the speed change can be reduced, thereby improving the stability of the weft feeder. The overall transmission path of the weft yarn 6 is shorter, thus reducing the fluctuations of the weft yarn 6 during transmission and improving weaving quality. When weaving ultra-fine imitation and high-grade fabrics, it can better adapt to weaving needs, and the weaving effect is better for fabrics with high precision requirements. The higher the weaving precision requirements of the fabrics, the more significant the technical effect of the solution provided in this application embodiment is.

[0044] The limiting member 22 provided in this application embodiment can integrate the yarn guide part 4 with the first through hole 222 and the yarn clamping part 5 with the second through hole 223 into one component. When the yarn guide part 4 of the yarn outlet 213 is installed, the yarn clamping part 5 can be installed at the same time, so that secondary installation is not required. This can reduce the assembly process of the weft feeder and reduce the use of connecting parts such as screws and bolts. While improving the production efficiency of the weft feeder, it can also reduce the production cost of the weft feeder.

[0045] Typically, the yarn-holding section 5 needs to move around the weft-feeding drum 3 at high speed for extended periods. The vibrations and centrifugal forces generated by this movement affect the stability of the yarn-holding section 5, easily causing slight displacements in its position. This displacement significantly impacts the high-speed running weft yarn 6, including but not limited to altering the angle and contact area between the weft yarn 6 and the yarn-holding section 5. This increases friction, reduces the buffering effect on the weft yarn 6, and leads to increased tension fluctuations in the weft yarn 6. This not only increases the risk of weft yarn breakage but also causes problems such as yarn skipping and weft exposure in woven products due to the tension fluctuations. The displacement of the yarn-holding section 5 also disrupts the dynamic balance of the yarn guide 2, increasing the load on the drive device and shortening the lifespan of the weft feeder. To improve the operational stability of the weft feeder, it is necessary to minimize the number of connection points on the yarn guide 2.

[0046] In the solution provided by this application embodiment, the second through hole 223 for yarn holding is directly formed in the integrally molded limiting member 22. This eliminates the need for additional installation structures, improves the overall structural strength, and enables it to withstand stronger vibrations and centrifugal forces. Therefore, during the operation of the weft feeder, the possibility of positional displacement of the second through hole 223 can be reduced, thereby reducing the possibility of weft yarn 6 breakage and improving weaving quality. When the yarn guide 2 drives the limiting member 22 to rotate, the stress distribution of the limiting member 22 is more uniform, preventing stress concentration at the connection position of the yarn holding part 5. Therefore, in the solution provided by this application embodiment, the positional accuracy of the second through hole 223 is higher, which is beneficial for improving yarn holding accuracy and enhancing the yarn holding effect. Due to the higher positional accuracy of the second through hole 223, the position of the second through hole 223 can be further optimized during design. This allows the limiting member 22 to improve the yarn holding effect while also reducing friction between the weft yarn 6 and the hole wall of the second through hole 223, thereby improving weaving quality. The one-piece molded limiting member 22 has fewer connection points between itself and the main body 21 during installation. Therefore, fewer points are affected by vibration during the movement of the weft feeder, resulting in better overall stability of the limiting member 11 and reducing the likelihood of loosening. Simultaneously, the one-piece molded structure has higher structural strength and can withstand high motion loads, thus improving the weaving accuracy of the weft feeder and enabling its application in the weaving of high-precision fabrics, thereby enhancing weaving quality.

[0047] The limiting member 22 extends in the direction close to the weft storage drum 3. In the solution provided in this application, when the weft yarn 6 passes through the first through hole 222 and is wound around the weft storage drum 3, it is not necessary to wind it around the limiting member 22. After winding a predetermined number of turns, the weft yarn 6 is then passed through the second through hole 223. The portion of the weft yarn 6 that passes through the first through hole 222 but not through the second through hole 223 does not need to be wound around the limiting member 22 when it is wound around the weft storage drum 3. This design can reduce the contact area between the weft yarn 6 and the limiting member 22, so that the limiting member 22 can play a role in restraining the yarn while reducing the friction between the limiting member 22 and the weft yarn 6, thereby reducing the impact of the limiting member 22 on the weft yarn 6, reducing the possibility of weft yarn breakage, and improving weaving quality. Furthermore, compared to the scheme where the yarn-holding part 5 is located 180° away from the yarn outlet 213, since the second through hole 223 in this scheme is located on the same side of the yarn guide 2 as the yarn outlet 213, the operator can guide the weft yarn 6 from the yarn outlet 213 from the side of the weft feeder when threading the yarn. After the weft drum 3 is wound around, the operator does not need to move to the other side of the weft feeder and can directly thread the weft yarn 6 through the second through hole 223, which has the function of holding the yarn, in the original position. This helps to reduce the distance the operator moves during the threading process, making the operation more convenient and improving the threading efficiency, thereby improving the weaving efficiency and better meeting the actual use needs.

[0048] The limiting member 22 provided in this embodiment is an integrally molded structure, resulting in higher overall structural stability and less vibration during the operation of the weft feeder. Therefore, it has less impact on the tension of the weft yarn 6, reducing tension fluctuations. When the tension of the weft yarn 6 fluctuates, it leads to different degrees of stretching. The weft yarn 6 with higher tension is stretched thinner and has tighter interlacing points, while the weft yarn 6 with lower tension is relatively thicker and has looser interlacing points, causing uneven stripes in the fabric. This defect is difficult to eliminate through subsequent steps, affecting the overall weaving quality, especially in mass production, where it can easily lead to the scrapping of the entire batch of fabric. Moreover, due to the different tensions of the weft yarn 6, the internal stress of the weft yarn 6 is also different. The weft yarn 6 with higher tension is more prone to stress concentration, resulting in uneven stress distribution and localized stress concentration in the fabric. The weft yarn 6 is prone to fiber fatigue, leading to fabric damage. This is particularly serious in the weaving of ultra-fine imitation and high-grade fabrics, where the impact on weaving quality is especially severe. The solution provided in this application embodiment can better control the tension of the weft yarn 6, making the tension of the weft yarn 6 more uniform and reducing the possibility of stress concentration in the weft yarn 6. This reduces the possibility of defects such as wrinkles and stripes in the fabric. The overall weaving precision is higher, especially when producing ultra-fine imitations and high-grade fabrics, resulting in better fabric quality.

[0049] Taking the fabric of windproof jackets and down jackets as an example, the fabric of windproof jackets and down jackets usually needs to meet the requirements of windproofing, waterproofing, and abrasion resistance. Therefore, the requirements for the overall density and uniformity of the fabric are relatively high. By using the weft feeder provided in the embodiments of this application, the tension of the weft yarn 6 can be made more uniform during weaving, resulting in a fabric with a uniform overall density and less stress concentration. Therefore, it can better achieve the effects of windproofing and waterproofing. The uniform tension of the weft yarn 6 means that each weft yarn 6 is subjected to the same stretch, so it is less likely to break, and the overall abrasion resistance is also better, which better meets the usage requirements of the fabric.

[0050] like Figure 13 As shown in the figure, the dashed line k indicates the length direction of the limiting member 22, and the dashed line j indicates the axial direction of the weft storage drum 3. In one possible embodiment, the angle β between the length direction of the limiting member 22 and the axial direction of the weft storage drum 3 is 40° to 70°. Specifically, the angle between the length direction of the limiting member 22 and the axial direction of the weft storage drum 3 can be 40°, 45°, 50°, 55°, 60°, 65°, 70°, etc.

[0051] When setting the weft yarn 6, it is usually passed through the first through hole 222, wound around the weft storage drum 3 a predetermined number of times, then passed through the second through hole 223, and continued to be wound around the weft storage drum 3 after passing through the second through hole 223. By setting the limiting member 22 installed on the body part 21 at an angle relative to the axial direction of the weft storage drum 3, the first through hole 222 and the second through hole 223 can be spaced at a certain distance along the axial direction of the weft storage drum 3. The portion of the weft yarn 6 that passes through the first through hole 222 but does not pass through the second through hole 223 can be spirally wound around the weft storage drum 3. The weft yarns 6 in different turns can be spaced at a certain distance along the axial direction of the weft storage drum 3, thereby reducing the possibility of contact between the weft yarns 6 in different turns and helping to reduce the possibility of mutual friction between the weft yarns 6.

[0052] When the angle between the length direction of the limiting member 22 and the axial direction of the weft storage drum 3 is too large, that is, when the limiting member 22 is closer to being perpendicular to the axial direction of the weft storage drum 3, the distance between the first through hole 222 and the second through hole 223 in the axial direction of the weft storage drum 3 is too small. When the weft yarn 6 is wound, the distance between the weft yarns 6 located between the first through hole 222 and the second through hole 223 along the axial direction of the weft storage drum 3 is too close, making them prone to mutual friction. When the angle between the length direction of the limiting member 22 and the axial direction of the weft storage drum 3 is too small, the length direction of the limiting member 22 is closer to being parallel to the axial direction of the weft storage drum 3, which increases the space occupied by the limiting member 22 in the axial direction of the weft storage drum 3, making it easy to interfere with other components of the weft storage device. The limiting member 22 is approximately a cantilever beam structure. Along the axial direction of the weft storage drum 3, the limiting member 22 extends further outward, which can easily lead to a decrease in the stability of the limiting member 22. When the weft storage device is working, the limiting member 22 is prone to vibration, causing fluctuations in the tension of the weft yarn 6. Furthermore, along the axial direction of the weft drum 3, the increased distance between the first through hole 222 and the second through hole 223 leads to an increase in the length of the weft yarn 6 located between the first through hole 222 and the second through hole 223. When the speed of the weft yarn 6 changes, it is prone to fluctuations. During the winding of the weft yarn 6, the length of the weft yarn 6 passing through the second through hole 223 will be significantly longer than other loops, making tension fluctuations more likely. This affects weaving quality, resulting in irregular wrinkles in the fabric and uneven density between the weft and warp yarns. When the weft yarn with greater tension is pulled thinner, the interlacing point becomes tighter, while the weft yarn with less tension is thicker, and the interlacing point becomes looser, forming density difference stripes, leading to fabric defects that are difficult to eliminate through subsequent processing. In mass production, this can easily result in the scrapping of an entire batch of fabric. Therefore, the angle between the length direction of the limiting member 22 and the axial direction of the weft storage drum 3 is between 40° and 70°. This allows for optimization of the structure of the weft storage drum 3, reducing component interference while minimizing the transmission path of the weft yarn 6. This ensures the weft yarn 6 is wound around the storage drum 3 with appropriate tension and length, thus improving the stability of the weft yarn output, reducing tension fluctuations, and minimizing friction, thereby reducing the risk of breakage. More stable weft yarn output and more uniform tension improve weaving quality, especially in ultra-fine and high-grade fabric weaving, where it significantly enhances the fabric's quality. Figure 14 As shown, in one possible embodiment, the main body 221 includes a first main body 221a, a second main body 221c, and a transition section 221b. A first through hole 222 is provided in the first main body 221a, and a second through hole 223 is provided in the second main body 221c. The transition section 221b connects the first main body 221a and the second main body 221c. The first main body 221a is connected to the body portion 21 so that the limiting member 22 is mounted on the body portion 21. Along the direction close to the second main body 221c, the width of the transition section 221b gradually decreases, and / or the thickness gradually increases.

[0053] By setting the transition section 221b, the structure of the main body 221 can be optimized. Adjusting the structure of the transition section 221b allows for adjustments to the relative positions of the first main body 221a and the second main body 221c, providing greater design flexibility. When different structures of the limiting member 22 are required, only the structure of the transition section 221b needs adjustment. The structural adjustments for the first main body 221a with the first through hole 222 and the second main body 221c with the second through hole 223 are minimal, reducing design complexity. The gradually changing cross-sectional area of ​​the transition section 221b reduces the overall volume of the limiting member 22, thereby lowering costs and reducing the possibility of interference between the limiting member 22 and the weft feeder components.

[0054] When the weft feeder is in use, the weft yarn 6 passes through the second through hole 223 and is wound around the weft drum 3. Under the action of the weft inserter, it is released from the weft drum 3. The direction of movement of the weft yarn 6 is axial movement around the weft drum 3. Therefore, when the weft yarn 6 contacts and moves with the wall of the second through hole 223, the limiting member 22 will have a tendency to move along its own width direction. Therefore, by increasing the width of the connection position between the transition section 221b and the first main body 221a, the structural stability of the limiting member 22 can be improved, the possibility of deformation of the limiting member 22 during the operation of the weft feeder can be reduced, and the working stability and weaving quality of the weft feeder can be improved.

[0055] The structure of the limiting member 22 can be approximated as a cantilever beam, that is, one end of the limiting member 22 is connected to the main body 21, and the other end is a free end. Specifically, the end where the first main body 221a is located is the fixed end of the cantilever beam, and the end where the second main body 221c is located is the free end of the cantilever beam. Increasing the width of the transition section 221b and the first main body 221a can help improve the overall structural strength of the limiting member 22, increase the reliability of the connection between the limiting member 22 and the main body 21, and help reduce the vibration of the limiting member 22. This results in a smoother conveying of the weft yarn 6, reducing the possibility of tension fluctuations in the weft yarn 6, thereby reducing weaving defects, making the fabric tension more uniform, and improving manufacturing quality.

[0056] The increased thickness of the transition section 221b near the end of the second main body 221c can help improve the structural strength of the "free end" of the limiting member 22, reduce the possibility of vibration of the second main body 221c during the operation of the weft feeder, thereby improving the stability of the weft yarn 6 conveying, reducing the tension fluctuation of the weft yarn 6, and thus improving the weaving quality.

[0057] like Figure 15As shown in the figure, the dashed line m represents the axis of the first through hole 222, and the dashed line n represents the axis of the second through hole 223. In one possible embodiment, in the projection along the length direction of the limiting member 22, the axis of the first through hole 222 and the axis of the second through hole 223 have an included angle α, where the degree measure of the included angle α is 45°≤α≤90°. The included angle between the axis of the first through hole 222 and the axis of the second through hole 223 can be 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, etc. When the limiting member 22 is installed on the main body 221, its state is as follows. Figure 16 As shown.

[0058] This design allows the second through hole 223 to be tilted relative to the axial direction of the weft drum 3. When the weft yarn 6 is wound, the contact area between the weft yarn 6 and the second through hole 223 can be reduced, thereby reducing the friction between the weft yarn 6 and the second through hole 223 and reducing the risk of weft yarn 6 breaking.

[0059] When the contact area between weft yarn 6 and the second through hole 223 is large, the friction on weft yarn 6 increases, causing jamming during its release and resulting in stretching and tension fluctuations. During weaving, these tension fluctuations can lead to fabric defects such as wrinkles and stripes, resulting in uneven fabric thickness. Weft yarns with high tension are overstretched, damaging fibers and reducing overall strength. Weft yarns with low tension contribute insufficient effective strength during weaving, leading to reduced and uneven tail strength and tear resistance. Loose weft yarns are more likely to float on the fabric surface, being the first to be rubbed during wear and use, making them prone to tearing. Uneven tension in weft yarns affects the fabric's breathability, moisture permeability, windproofing, and downproofing properties, causing performance differences in different parts of the same fabric and ultimately impacting the quality of products made from it.

[0060] This design allows for adjustment of the position of the second through-hole 223. When the weft yarn 6 passes through the second through-hole 223 and contacts its wall, the inclined design of the second through-hole 223 helps reduce friction between the weft yarn 6 and the hole wall, thus reducing damage to the weft yarn 6 and the risk of breakage. Simultaneously, the reduced contact area and friction between the weft yarn 6 and the limiting member 22 allow the second through-hole 223 to not only restrain the yarn but also reduce friction, lowering the possibility of tension fluctuations in the weft yarn 6. The resulting fabric has a more uniform overall density and is less prone to defects such as wrinkles and stripes. Overall, it offers better windproof, waterproof, and abrasion-resistant properties. Furthermore, this design reduces wear on the limiting member 22, extending the service life of both the limiting member 22 and the weft feeder.

[0061] like Figure 17As shown, in one possible implementation, the distance a between the wall of the first through hole 222 and the edge of the first main body 221a is 2 mm to 5 mm along the width direction of the limiting member 22.

[0062] The first main body 221a can be approximated as a ring structure. When the ring width of the first main body 221a is too small, the structural strength of the first main body 221a is poor. When the ring width of the first main body 221a is too large, the overall volume of the first main body 221a is large, resulting in higher cost.

[0063] like Figure 17 As shown, in one possible implementation, the first through hole 222 can be a racetrack-shaped structure, that is, the opposite sides of the first through hole 222 are arc-shaped along the width direction of the limiting member 22. In the projection along the axial direction of the first through hole 222, the inner wall of the first through hole 222 is arc-shaped, with a radius r1 of 2 mm to 3 mm. The outer wall of the first main body 221a is arc-shaped, with a radius r2 of 5 mm to 7 mm.

[0064] like Figure 17 As shown, in one possible implementation, the width b of the transition segment 221b near the end of the first main body 221a is 8 mm to 10 mm. Specifically, the dimension of the end of the transition segment 221b connected to the first main body 221a can be 8.0 mm, 8.2 mm, 8.4 mm, 8.6 mm, 8.8 mm, 9.0 mm, 9.2 mm, 9.4 mm, 9.6 mm, 9.8 mm, 10.0 mm, etc.

[0065] When the width of the end connecting the transition section 221b to the first main body 221a is too small, the structural strength at the connection point between the transition section 221b and the first main body 221a will decrease. When the width of the end connecting the transition section 221b to the first main body 221a is too large, the overall volume of the limiting member 22 will increase, which may cause interference between the limiting member 22 and the weft yarn 6, increasing the contact area between the limiting member 22 and the weft yarn 6 and increasing the friction experienced by the weft yarn 6. By setting the width of the connection point between the first main body 221a and the transition section 221b to 8 mm to 10 mm, the limiting member 22 can have high structural strength while reducing its volume, which better meets actual usage requirements.

[0066] like Figure 17 As shown, in one possible implementation, the distance c between the first through hole 222 and the second through hole 223 along the length direction of the limiting member 22 is 18 mm to 35 mm. The length d of the limiting member 22 is 32 mm to 60 mm.

[0067] Specifically, the distance c between the first through hole 222 and the second through hole 223 can be 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, 31 mm, 32 mm, 33 mm, 34 mm, or 35 mm.

[0068] When the distance between the first through hole 222 and the second through hole 223 is too close, the distance between the second through hole 223 and the weft storage drum 3 will increase relatively, thus affecting the yarn-holding effect of the second through hole 223 and reducing the yarn-holding accuracy. The weft yarn 6 is prone to tension fluctuations leading to breakage. When the distance between the first through hole 222 and the second through hole 223 is too far, the volume of the limiting member 22 will increase. When the yarn guide 2 rotates, the centrifugal force on the limiting member 22 will increase, easily causing deformation of the main body 21 and the limiting member 22, affecting the yarn-holding effect. Moreover, the length of the weft yarn 6 located between the first through hole 222 and the second through hole 223 will increase, making the weft yarn 6 more prone to fluctuations, resulting in tension changes and affecting the weaving effect. By making the distance between the first through hole 222 and the second through hole 223 between 18 mm and 35 mm, the yarn-holding effect can be improved while reducing the volume of the limiting member 22, thereby reducing costs and improving the stability of the weft feeder operation.

[0069] like Figure 17 As shown, in one possible implementation, the length of the limiting member 22 can be 32 mm, 34 mm, 36 mm, 38 mm, 40 mm, 42 mm, 44 mm, 46 mm, 48 mm, 50 mm, 52 mm, 54 mm, 56 mm, 58 mm, 60 mm, etc.

[0070] When the length of the limiting member 22 is too small, the distance between the limiting member 22 and the weft storage drum 3 increases, i.e., the distance between the second through hole 223 and the weft storage drum 3 increases, which leads to a decrease in the yarn holding effect and makes the weft yarn 6 more prone to tension fluctuations. When the length of the limiting member 22 is too large, the volume of the limiting member 22 increases, resulting in more material used and increased costs. Moreover, the limiting member 22 is prone to interference with other components. The increased volume of the limiting member 22 leads to an increase in mass, and when the yarn guide member 2 rotates, the increased centrifugal force on the limiting member 22 can easily cause changes in the position of the limiting member 22, affecting the yarn holding effect. By making the length of the limiting member 22 between 32 mm and 60 mm, a better yarn holding effect can be achieved while reducing the volume of the limiting member 22 and lowering costs.

[0071] In one possible implementation, at least a portion of the wall of the first through hole 222 is arc-shaped, and / or at least a portion of the wall of the second through hole 223 is arc-shaped.

[0072] By setting chamfers at the edges of the holes of the first through hole 222 and the second through hole 223, the hole walls can be made smoother, thereby reducing the friction between the hole walls of the first through hole 222 and the second through hole 223 and the weft yarn 6, and reducing the possibility of the weft yarn 6 breaking.

[0073] like Figure 18 As shown, in one possible implementation, the main body 221 is provided with a notch 221d, which communicates with the second through hole 223, and the notch 221d penetrates at least one edge of the main body 221.

[0074] When the weft yarn 6 is placed in the second through hole 223, the weft yarn 6 can be placed in the second through hole 223 along the notch 221d, which makes it easier for the weft yarn 6 to enter the second through hole 223, reduces the difficulty of operation and improves the yarn threading efficiency.

[0075] like Figure 19 As shown, in one possible implementation, at least a portion of the notch 221d is disposed in the transition section 221b.

[0076] This design reduces the impact of the notch 221d on the second main body 221c, thus helping to maintain the integrity of the second main body 221c. The transition section 221b needs to connect the first main body 221a and the second main body 221c and support the second main body 221c. Therefore, the overall structural strength of the transition section 221b is high. Placing the notch 221d in the structurally strong transition section 221b reduces the impact of the notch 221d on the limiting member 22, thus helping to maintain the structural strength of the limiting member 22.

[0077] In one possible implementation, the opening of the notch 221d is located on the side of the limiting member 22 away from the weft storage drum 3.

[0078] This design reduces the possibility of the weft yarn 6 disengaging from the second through hole 223 along the notch 221d.

[0079] When the weft feeder is working, the weft yarn 6 moves in a spiral motion along the circumference of the weft drum 3. Therefore, the weft yarn 6 has a tendency to move closer to the weft drum 3. By setting the opening of the notch 221d on the side of the limiting member 22 away from the weft drum 3, the weft yarn 6 can be better prevented from detaching from the weft drum 3. At the same time, the space on the side of the limiting member 22 away from the weft drum 3 is larger, providing more space when setting the weft yarn 6, which is convenient for the operator.

[0080] like Figure 20 As shown, in order to facilitate the installation of the limiting member 22 on the body part 21, the limiting member 22 may include a first extension 224 and / or a second extension 225 for connection with the body part 21.

[0081] like Figure 21 As shown, in one possible implementation, the limiting member 22 includes a first extension 224, which may be disposed in the first main body 221a and extend along the thickness direction of the limiting member 22. At least a portion of the first extension 224 extends into the channel 211 along the yarn outlet 213.

[0082] This design can help increase the contact area between the limiting member 22 and the main body 21. At the same time, the first extension section 224 extending into the channel 211 can also help improve the relative positional accuracy between the limiting member 22 and the main body 21, thereby improving the installation stability of the limiting member 22.

[0083] like Figure 21 As shown, in one possible implementation, the first extension 224 is provided with at least one first limiting groove 224a, such as... Figure 22 and Figure 23 As shown, the main body 21 is provided with at least one second limiting groove 214. For example... Figure 24 , Figure 25 and Figure 26 As shown, the yarn guide 2 also includes a first connector 23, which extends into both the first limiting groove 224a and the second limiting groove 214.

[0084] The first connector 23 can be a snap-fit ​​or other connecting component. The first connector 23 extends into both the first limiting groove 224a and the second limiting groove 214 to prevent the first extension section 224 from disengaging from the main body 21. This design has the advantages of simple structure, convenient operation, and low production cost.

[0085] In one possible implementation, the first connector 23 can be an iron wire.

[0086] like Figure 27 As shown, in one possible implementation, the first extension 224 includes at least two first limiting grooves 224a, which are located on opposite sides of the first extension 224 along the width direction of the limiting member 22. The body portion 21 is provided with at least two second limiting grooves 214, which are correspondingly provided with the first limiting grooves 224a. The yarn guide 2 may include one or more first connecting members 23. Specifically, when the yarn guide 2 includes multiple first connecting members 23, each first connecting member 23 can extend into the corresponding first limiting groove 224a and second limiting groove 214. When the yarn guide 2 includes one first connecting member 23, the first connecting member 23 can be a "U"-shaped structure, and both ends of the first connecting member 23 can be simultaneously inserted into the first limiting groove 224a and the second limiting groove 214.

[0087] This design allows both sides of the first extension section 224 to be limited by the first connecting member 23, thereby improving the stability of the limiting member 22 during installation. When the yarn guide 2 operates at high speed and for extended periods, it reduces the possibility of the limiting member 22 shaking and shifting position, thus improving the stability of the weft feeder and ultimately enhancing weaving quality.

[0088] In one possible implementation, the first connector 23 can be a "U"-shaped structure, allowing it to simultaneously extend into the first limiting grooves 224a located on both sides of the first extension 224. This helps to further improve the stability of the connection between the limiting member 22 and the main body 21.

[0089] like Figure 27 As shown, in one possible implementation, the dimension e of the first extension 224 along the thickness direction of the limiting member 22 is 2 mm to 4 mm. Specifically, the dimension of the first extension 224 can be 2.0 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3.0 mm, 32 mm, 3.4 mm, 3.6 mm, 3.8 mm, 4.0 mm, etc.

[0090] When the size of the first extension section 224 is too small, the extension section 224 extending into the channel 211 is too small, resulting in a small contact area between the limiting member 22 and the main body 21, affecting installation stability. When the size of the first extension section 224 is too large, the extension section 224 extending into the channel 211 is too long, making installation and disassembly inconvenient, and increasing the size of the limiting member 22, thus increasing cost. Ideally, the size of the first extension section 224 should be 2 mm to 4 mm. This improves the installation stability of the limiting member 22 while reducing its size, controlling costs, and better meeting actual production needs.

[0091] like Figure 27As shown, in one possible embodiment, the dimension f of the first limiting groove 224a from the end of the first extension 224 near the main body 221 is 0.45 mm to 0.65 mm. The dimension g of the first limiting groove 224a from the end of the first extension 224 away from the main body 221 is 0.85 mm to 1.05 mm. Along the thickness direction of the limiting member 22, the dimension h of the first limiting groove 224a can be 0.3 mm to 2.7 mm. The dimension of the first limiting groove 224a from the end of the first extension 224 near the main body 221 can be 0.45 mm, 0.50 mm, 0.55 mm, 0.60 mm, or 0.65 mm. The dimension of the first limiting groove 224a from the end of the first extension 224 away from the main body 221 can be 0.85 mm, 0.90 mm, 0.95 mm, 1.00 mm, or 1.05 mm, etc. The dimensions of the first limiting groove 224a can be 0.3 mm, 0.6 mm, 0.9 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2.1 mm, 2.4 mm, 2.7 mm, etc.

[0092] When the first limiting groove 224a is too close to the first main body 221a, it will cause the edge of the first limiting groove 224a to be too close to the edge of the main body 21 when it is installed on the main body 21, which may affect the installation stability. When the first limiting groove 224a is too far from the first main body 221a, the first extension 224 will extend too far into the channel 211, which will increase the assembly difficulty and volume, leading to increased costs. When the size of the first limiting groove 224a is too small, the size of the first connector 23 will also be relatively small, resulting in lower structural strength. When the size of the first limiting groove 224a is too large, it may affect the structural strength of the first extension 224, and at the same time increase the fitting accuracy requirements between the first connector 23 and the first limiting groove 224a.

[0093] like Figure 28 As shown, in one possible embodiment, the limiting member 22 includes at least one second extension 225 extending along the width direction of the limiting member 22. The second extension 225 is provided with a third through hole 225a. The yarn guide member 2 also includes a second connector (not shown in the figure), the second extension 225 abutting against the body portion 21, and at least a portion of the second connector is located in the third through hole 225a. The second connector is connected to the body portion 21 through the third through hole 225a to connect the limiting member 22 and the body portion 21. The second connector can be a threaded connector such as a screw or bolt.

[0094] In one possible implementation, the body portion 21 may be provided with a fourth through hole (not shown in the figure), which is provided in correspondence with the third through hole 225a, and the second connector can extend into both the third through hole 225a and the fourth through hole at the same time.

[0095] This design increases the contact area between the limiting member 22 and the main body 21, thereby improving the stability of the limiting member 22 during installation. By providing the second extension section 225, which extends to both sides of the limiting member 22, the third through hole 225a can be positioned away from the yarn outlet 213, thus reducing the possibility of interference between the connection between the limiting member 22 and the main body 21 and the yarn outlet 213.

[0096] like Figure 27 As shown, in one possible embodiment, the second extension 225 is provided with an abutting surface that abuts against the main body 21. The abutting surface is arc-shaped, and the radius r3 of the arc-shaped abutting surface is 145 mm to 155 mm. The radius of the abutting surface can be 145 mm, 147 mm, 149 mm, 151 mm, 153 mm, 155 mm, etc.

[0097] This design allows the limiting member 22 to better abut against the main body 21, increasing the contact area between the main body 21 and the limiting member 22, thereby improving the stability of the limiting member 22 during installation.

[0098] like Figure 28 As shown, in one possible implementation, the limiting member 22 includes at least two second extensions 225, which are disposed on opposite sides of the limiting member 22 along the width direction of the limiting member 22.

[0099] By providing at least two limiting members 22, the contact area between the limiting member 22 and the main body 21 can be further increased, thereby improving the stability of the connection between the limiting member 22 and the main body 21.

[0100] In one possible implementation, the main body 221 may simultaneously include a first extension 224 and a second extension 225. This structure can improve the stability of the positioning member 22 during installation, thereby enhancing the positional accuracy of the second through hole 223 and improving the yarn-holding effect.

[0101] In actual production, different sizes of yarn-holding sections 5 can be selected according to weaving requirements to improve weaving quality. The limiting member 22 can be provided with a first extension section 224 or a second extension section 225, or both a first extension section 224 and a second extension section 225 can be provided.

[0102] In one possible implementation, the limiting member 22 is detachably connected to the main body 21. The connection between the limiting member 22 and the main body 21 can be achieved by means of snap-fit, threaded connection, or other methods. This design facilitates the installation and removal of the limiting member 22, reducing operational difficulty.

[0103] Different structures of limiting members 22 can be designed, such as limiting members 22 of different lengths. When limiting members 22 of different lengths are installed on the main body 21, the distance between the second through hole 223 and the weft storage drum 3 is different. Therefore, the yarn restraining effect of the second through hole 223 will have certain differences. Different limiting members 22 can be selected according to factors such as weft yarn 6 material and weaving requirements, so that the yarn restraining ability of the limiting member 22 can better match the current weaving requirements, thereby improving the weaving quality.

[0104] In addition, the surface of the weft yarn 6 is usually covered with sizing. Long-term operation of the weft feeder will cause the sizing to accumulate at the position where the limiting part 22 contacts the weft yarn 6, such as the wall of the first through hole 222 and the wall of the second through hole 223. When the sizing accumulates, it will increase the friction between the weft feeder and the weft yarn 6, which will increase the risk of the weft yarn 6 breaking. Therefore, it is necessary to clean and replace the components of the weft feeder regularly.

[0105] In the solution provided by this application embodiment, the first through hole 222 and the second through hole 223 are integrated into the limiting member 22, which is more convenient for cleaning. Moreover, when replacing, only the limiting member 22 needs to be removed, without the need for separate disassembly. Furthermore, in the solution provided by this application embodiment, the limiting member 22 can be installed using connecting components such as screws and bolts, or it can be installed using snap-fit ​​components. Compared with adhesive bonding, the solution provided by this application embodiment is easier to disassemble, simpler to operate, and more efficient and cost-effective for cleaning and maintaining the weft feeder.

[0106] like Figure 29 As shown, in one possible embodiment, the main body 21 may include a mounting portion 215, a first support rod 216, and a second support rod 217. The first support rod 216 and the second support rod 217 are mounted on the mounting portion 215, which is connected to the output shaft of the drive device. When the drive device is running, it can drive the main body 21 to rotate around the weft storage drum 3 via the output shaft. The first support rod 216 has a hollow structure, with a yarn inlet 212 at one end facing the mounting portion 215 and a yarn outlet 213 at the other end away from the mounting portion 215. A limiting member 22 is mounted on the end of the first support rod 216 away from the mounting portion 215. The second support rod 217 and the first support rod 216 can be symmetrically arranged about the axis of the mounting portion 215. The overall structure of the yarn guide 2 is approximately "V" shaped. The second support rod 217 can serve as a counterweight to adjust the center of gravity of the yarn guide 2, enabling the yarn guide 2 to rotate at high speed and stably.

[0107] This design can effectively restrain the weft yarn 6, thereby cushioning it and helping to prevent the weft yarn 6 from breaking.

[0108] However, in this structural design, each support rod is only fixedly connected to the mounting part 215 at one end, with the end of each support rod away from the mounting part 215 being a free end. During the high-speed rotation of the yarn guide 2, the centrifugal force causes the free ends of each support rod to move away from each other, thereby causing the limiting member 22 to shift and the position of the second through hole 223 to change, affecting the yarn holding effect. Under the influence of centrifugal force, the movement direction of the free ends of the support rods is away from the weft storage drum 3, thus causing the limiting member 22 to move away from the weft storage drum 3. During this movement, the weft yarn 6 passing through the second through hole 223 is pulled, resulting in an increase in the relative force between the limiting member 22 and the weft yarn 6, which can easily cause the weft yarn 6 to break. Moreover, when the position of the limiting member 22 shifts, the weft yarn 6 is also prone to additional contact with the limiting member 22, increasing the friction on the weft yarn 6, which can lead to wear or breakage of the weft yarn 6.

[0109] To reduce the impact of centrifugal force on the yarn guide 2, the body 21 is typically made of a high-strength material such as metal to minimize or eliminate deformation during rotation. The higher cost of metal materials increases the overall cost of the weft feeder. Furthermore, metal materials are prone to oxidation and easily attract stains such as oil and fiber debris, which can alter the coefficient of friction and negatively affect the movement of the weft yarn 6. During high-speed movement, the weft yarn 6 comes into contact with the metal, easily causing wear and burrs. These burrs can scratch the weft yarn 6, leading to pilling, breakage, and other issues that affect weaving quality. The limiting element 22 is usually made of ceramic, but installing ceramic within a metal structure is relatively difficult and increases installation costs.

[0110] The "V"-shaped main body 21 creates gaps between the support rods along the circumference, making it easy for foreign objects to enter and cause the yarn guide 2 to jam. Furthermore, during actual production, operators may accidentally touch the yarn guide 2 while it is in operation, posing a significant safety hazard. To reduce this hazard, a protective cover is typically installed on the outside of the yarn guide 2 to prevent foreign objects from entering. Adding a protective cover not only increases the size of the weft feeder but also its cost.

[0111] like Figure 30 As shown, in one possible implementation, the body part 21 is a yarn guide disc.

[0112] The main body 21 can be approximated as a hollow conical structure. Along the axial direction of the yarn guide 2, the projection of the main body 21 can be approximated as a circle. Furthermore, the cross-sectional area of ​​the main body 21 gradually increases in the direction away from the driving device. The channel 211 is located inside the main body 21, the yarn inlet 212 is located at the end of the main body 21 with a smaller cross-sectional area, and the yarn outlet 213 is located at the end of the main body 21 with a larger cross-sectional area. The yarn outlet 213 can be located at the edge of the main body 21.

[0113] Because the main body 21 has a conical disc structure, the force on each part of the main body 21 is relatively balanced during the high-speed movement of the yarn guide 2, and it is less affected by centrifugal force. This helps to reduce or even eliminate the deformation of the yarn guide 2 caused by centrifugal force. Furthermore, the surface of the main body 21 is arc-shaped, which allows the force to be transmitted to the entire main body 21 when under stress, thereby improving the structural strength of the main body 21. Due to the improved structural strength of the main body 21, the material of the main body 21 can be plastic, etc. Plastic has high plasticity, many processing methods, and is more convenient to process. Moreover, plastic is inexpensive, which can greatly reduce the cost of the weft feeder. Compared with metal, plastic has lower hardness and better plasticity, making it easier to create corresponding through holes and limiting grooves in the main body 21. Therefore, the processing difficulty is lower, and processing costs can be saved while improving processing efficiency. Meanwhile, since the main body 21 has a conical disc structure, and its surface is approximately a complete arc along the circumference, foreign objects cannot penetrate into the main body 21 from the outside along the radial direction. This reduces the possibility of foreign objects obstructing the movement of the yarn guide 2, and also reduces the possibility of operators accidentally touching the main body and causing parts of their bodies to enter it. Therefore, while reducing costs and improving the stability of the weft feeder, it also enhances the safety of the weft feeder and reduces safety hazards. Furthermore, because the yarn guide disc itself has high safety, the protective cover on the outside of the yarn guide can be omitted, further saving costs.

[0114] Since the solution provided in this application integrates the conventional yarn guide 4 and yarn restraint 5, both of which are located at the yarn outlet 213, a counterweight can be provided in the main body 21 to improve the dynamic balance of the yarn guide 2 and thus enhance the stability of the yarn guide 2's movement.

[0115] In one possible implementation, a reinforcing rib is provided on the side of the body portion 21 away from the weft storage drum 3. At least a portion of the reinforcing rib protrudes relative to the surface of the body portion 21.

[0116] By incorporating reinforcing ribs, the overall structural strength of the main body 21 can be improved, thereby reducing or even eliminating deformation of the main body 21 during movement. Simultaneously, the reinforcing ribs also act as counterweights, enhancing the stability of the yarn guide 2's movement and thus improving weaving quality.

[0117] In use, the weft feeder provided in this embodiment allows the weft yarn 6 to be inserted into the weft feeder from the tail of the housing 1. The weft yarn 6 enters the yarn inlet 212 of the yarn guide 2 and extends out from the yarn outlet 213 along the channel 211, passing through the first through hole 222 of the limiting member 22. Then, the limiting member 22 is wound around the weft drum 3 a predetermined number of times, which can be 1 to 10 times. This portion of the weft yarn 6 is used to prevent the weft yarn 6 from completely detaching from the weft drum 3 during the yarn feeding process. After the predetermined number of turns, the weft yarn 6 is passed through the second through hole 223 of the limiting member 22 and then continues to be wound around the weft drum 3.

[0118] In the solution provided in this application embodiment, the first through hole 222 for yarn delivery and the second through hole 223 for yarn restraint are jointly disposed in the integrally formed limiting member 22, which can improve the relative positional accuracy between the yarn outlet 213, the second through hole 223, and the weft storage drum 3, thereby improving the yarn restraint effect of the second through hole 223 and improving weaving quality. Since the first through hole 222 and the second through hole 223 are both integrated in the limiting member 22, the installation steps can be simplified and the assembly efficiency can be improved. The first through hole 222 and the second through hole 223 are located on the same side of the yarn guide member 2. When setting the weft yarn 6, the operator can operate on the same side of the weft storage without having to move to the other side of the weft storage device to thread the yarn, which can reduce the difficulty of operation and improve the threading efficiency. The limiting member 22 can be adapted to the body part 21 of the yarn guide 2 with different shapes. The structural requirements for the body part 21 are low; it can be directly installed on the existing yarn outlet 213 of the weft feeder's body part 21 without additional structural adjustments, reducing the cost of setting up a yarn-holding structure in the weft feeder. The body part 21 can be a yarn guide disc, which is approximately a conical structure with mounting holes and a circular circumference. Therefore, when the yarn guide disc is subjected to force, the force can be transmitted to the entire disc, resulting in high structural strength. During the operation of the weft feeder, the yarn guide disc can withstand significant centrifugal force, reducing deformation of the body part 21 and improving the relative positional accuracy between the second through hole 223 and the weft feed drum 3, thus enhancing the yarn-holding effect. Due to the high structural strength and good resistance to deformation of the yarn guide disc, it can be made of materials such as plastic, which is more cost-effective than metal. Meanwhile, plastic is lighter, and using plastic to make the body part 21 can reduce the load on the drive device, which helps extend the service life of the weft feeder. Plastic has high plasticity and a variety of processing methods. Moreover, plastic has good corrosion resistance, eliminating the need for rust prevention treatment and reducing maintenance costs. The limiting member 22 is usually made of ceramic material, which is relatively brittle, making it difficult to install the limiting member 22 on the metal body part 21. Plastic has lower hardness than metal, making it easier to install the limiting member 22. Furthermore, the difference in the coefficient of thermal expansion between plastic and ceramic is smaller than that between metal and ceramic. Therefore, placing the limiting member 22 on the plastic body part 21 provides better installation stability.

[0119] When the main body 21 is V-shaped, the requirements for dynamic balance are high. The overall volume, position, and center of gravity of the two support rods need to be nearly identical. Therefore, the installation accuracy of the limiting member 22 is also high. Since the position of the yarn outlet 213 of the channel 211 is relatively fixed, the position of the yarn guide 4 located at the yarn outlet 213 is also relatively fixed. During installation, the position of the yarn clamping part 5 is usually adjusted to improve the dynamic balance of the overall structure. Because the yarn clamping part 5 is a separate component and needs to rotate continuously and at high speeds during the operation of the weft feeder, the installation stability of the yarn clamping part 5 is highly demanding. The mounting bracket 51 usually needs to be made of a metal material with high hardness, while the yarn clamping ring 52, because it needs to directly contact the weft yarn, usually needs to be made of a ceramic material with high wear resistance and smoothness. This makes it difficult to balance the material selection for the yarn clamping ring 52 and the mounting bracket 51. Therefore, when the structure of the main body 21 is a V-shaped rod, the setting position of the yarn clamping part 5 needs to retain a certain degree of flexibility to improve the overall dynamic balance of the yarn guide 2.

[0120] In the solution provided in this application embodiment, the main body 21 is a yarn guide disc, which is an integral disc-shaped structure with better overall strength and a more stable center of gravity. Since the yarn guide disc is larger in volume than the "V"-shaped structure, the impact on the overall dynamic balance when installing the limiting member 22 is small, or even negligible. During installation, only the positional accuracy of the limiting member 22 needs to be considered; its impact on the overall dynamic balance is not required. Therefore, there is no need to separately adjust the position of the "yarn-holding part 5" during installation, and the yarn guide part 4 and the yarn-holding part 5 can be integrally formed to create the limiting member 22. Furthermore, since the limiting member 22 is an integrally formed structure, its overall structural strength is high, eliminating the need for metal reinforcement. Therefore, the solution provided in this application embodiment can use an integrally formed limiting member 22, which not only reduces costs but also improves yarn holding, reducing the possibility of tension fluctuations in the weft yarn 6, thereby improving weaving quality and reducing the possibility of wrinkles and stripes in the fabric. The fabric exhibits more uniform tension and density, resulting in consistent color and texture. The overall structure is stable, with even weft stress and consistent abrasion resistance. This prevents deformation and twisting during subsequent use. The more stable tension of the weft yarn (6) reduces yarn breakage and downtime during weaving, improving both efficiency and quality.

[0121] By adopting the solution provided in the embodiments of this application, the weaving quality of the weft feeder can be improved, while the manufacturing cost of the weft feeder can be reduced, making it more in line with actual usage needs.

[0122] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A weft feeder, characterized in that, The weft feeder includes a housing (1), a yarn guide (2), and a weft drum (3). The yarn guide (2) and the weft drum (3) are mounted on the housing (1), and the yarn guide (2) is rotatable relative to the weft drum (3). The yarn guide (2) includes a body (21) and a limiting member (22). The body (21) is provided with a channel (211). Along the extension direction of the channel (211), one end of the channel (211) is provided with a yarn inlet (212) and the other end is provided with a yarn outlet (213). The limiting member (22) is provided at the yarn outlet (213). The limiting member (22) includes a main body (221), which extends in a direction close to the weft storage drum (3) and is provided with a first through hole (222) and a second through hole (223) at intervals along its own length direction. The first through hole (222) communicates with the yarn outlet (213), and the second through hole (223) is located at one end of the limiting member (22) away from the channel (211). The limiting component (22) is an integrally formed structure.

2. The weft feeder according to claim 1, characterized in that, In the projection along the length direction of the limiting member (22), the axis of the first through hole (222) and the axis of the second through hole (223) have an included angle α, the degree of the included angle α is 45°≤α≤90°.

3. The weft feeder according to claim 2, characterized in that, The main body (221) includes a first main body (221a), a second main body (221c), and a transition section (221b). The first main body (221a) is connected to the main body (21), and the transition section (221b) connects the first main body (221a) and the second main body (221c). The first through hole (222) is provided in the first main body (221a), and the second through hole (223) is provided in the second main body (221c). Along the direction close to the second main body (221c), the width of the transition section (221b) gradually decreases, and / or the thickness gradually increases.

4. The weft feeder according to claim 3, characterized in that, Along the width direction of the limiting member (22), the distance between the hole wall of the first through hole (222) and the edge of the first main body (221a) is 2 mm to 5 mm.

5. The weft feeder according to claim 3, characterized in that, The width of the transition section (221b) near the end of the first main body (221a) is 8 to 10 millimeters.

6. The weft feeder according to claim 1, characterized in that, At least a portion of the wall of the first through hole (222) is arc-shaped, and / or at least a portion of the wall of the second through hole (223) is arc-shaped.

7. The weft feeder according to claim 1, characterized in that, The angle between the length direction of the limiting member (22) and the weft storage drum (3) is β, and 40°≤β≤70°.

8. The weft feeder according to any one of claims 1 to 7, characterized in that, The main body (221) is provided with a notch (221d), which communicates with the second through hole (223) and extends through at least one edge of the main body (221).

9. The weft feeder according to claim 8, characterized in that, At least a portion of the notch (221d) is located in the transition section (221b) of the main body (221).

10. The weft feeder according to any one of claims 1 to 7, characterized in that, The limiting member (22) includes a first extension (224) that extends along the thickness direction of the limiting member (22); At least a portion of the first extension (224) extends into the channel (211) along the yarn outlet (213).

11. The weft feeder according to claim 10, characterized in that, The first extension section (224) is provided with at least one first limiting groove (224a), the main body (21) is provided with at least one second limiting groove (214), and the yarn guide (2) further includes a first connector (23), which extends into the first limiting groove (224a) and the second limiting groove (214).

12. The weft feeder according to claim 11, characterized in that, The first extension (224) includes at least two first limiting grooves (224a), which are located on opposite sides of the first extension (224) along the width direction of the limiting member (22); The main body (21) is provided with at least two second limiting grooves (214), and the second limiting grooves (214) are provided corresponding to the first limiting grooves (224a).

13. The weft feeder according to claim 11, characterized in that, Along the thickness direction of the limiting member (22), the size of the first limiting groove (224a) is 0.3 mm to 2.7 mm.

14. The weft feeder according to claim 11, characterized in that, Along the thickness direction of the limiting member (22), the distance between the first limiting groove (224a) and the end of the first extension (224) near the main body (221) is 0.45 mm to 0.65 mm, and / or; Along the thickness direction of the limiting member (22), the distance between the first limiting groove (224a) and the end of the first extension (224) away from the main body (221) is 0.85 mm to 1.05 mm.

15. The weft feeder according to claim 10, characterized in that, Along the thickness direction of the limiting member (22), the first extension (224) has a size of 2 mm to 4 mm.

16. The weft feeder according to any one of claims 1 to 7, characterized in that, The limiting member (22) includes at least one second extension (225) that extends along the width direction of the limiting member (22) and has a third through hole (225a). The yarn guide (2) includes a second connector, at least a portion of which is located in the third through hole (225a). The second connector is used to connect the limiting member (22) and the body part (21).

17. The weft feeder according to claim 16, characterized in that, The limiting member (22) includes at least two second extension segments (225), which are disposed on opposite sides of the limiting member (22) along the width direction of the limiting member (22).

18. The weft feeder according to claim 16, characterized in that, The second extension section (225) is provided with an abutting surface, which abuts against the main body (21). The abutting surface is an arc-shaped surface with a radius of 145 mm to 155 mm.

19. The weft feeder according to any one of claims 1 to 7, characterized in that, Along the length direction of the limiting member (22), the size of the limiting member (22) is 32 mm to 60 mm.

20. The weft feeder according to any one of claims 1 to 7, characterized in that, The limiting member (22) is detachably connected to the main body (21).

21. The weft feeder according to any one of claims 1 to 7, characterized in that, The main body (21) is a yarn guide plate.

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