Weft yarn feeding mechanism of loom

Abstract

The utility model relates to the technical field of looms, in particular to a weft feeding mechanism of a loom, which comprises a frame body, a yarn releasing disc, a weft feeding component and a control device, the yarn releasing disc is mounted on the frame body, and a guide roller A and a guide roller B for conveying weft are further mounted on the frame body; a transverse frame is mounted on one side of the frame body, and a guide roller C is mounted on the transverse frame; the weft feeding assembly comprises a fixing plate, a yarn feeding frame, a yarn feeding roller, a conveying roller A, a conveying roller B, a yarn feeding plate and a sucking pump, the fixing plate is fixedly connected to the transverse frame, and the yarn feeding frame is installed on the fixing plate. The weft yarn tension adjusting device can effectively utilize the negative pressure suction principle to adjust the tension of weft yarns. By means of the design, it can be guaranteed that weft yarn keeps proper tension in the whole weft feeding process, it can be guaranteed that the weft yarn is straight and has certain tension in the conveying process, the twisting phenomenon is avoided, the problem of inconsistency caused by manual adjustment can be avoided, and therefore the quality of fabric is improved.

Description

Technical Field

[0001] This utility model relates to the field of weaving machine technology, and in particular to a weft feeding mechanism for a weft loom. Background Technology

[0002] Currently, a loom is a mechanical device used to interweave warp and weft yarns into fabric. The core function of a loom is to interweave longitudinally arranged warp yarns with laterally passing weft yarns through a series of complex mechanical movements to form the desired fabric.

[0003] In traditional looms, weft tension adjustment typically relies on manual adjustments by the operator. This manual method easily leads to inconsistent tension. Due to the lack of an effective automatic adjustment mechanism, tension fluctuations during weft yarn transport can cause the weft yarn to become too loose or too tight, thus affecting the quality of the final fabric. Furthermore, without proper tension control, the weft yarn may twist during transport, which not only affects its straightness but can also lead to problems such as yarn breakage during weaving.

[0004] Therefore, a weft feeding mechanism for a loom is needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a weft feeding mechanism for a loom. This invention can effectively utilize the principle of negative pressure attraction to adjust the tension of the weft yarn. This design not only ensures that the weft yarn maintains appropriate tension throughout the entire feeding process, guaranteeing that the weft yarn remains straight and under certain tension during transport without twisting, but also avoids inconsistencies caused by manual adjustment, thereby improving the quality of the fabric.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a weft yarn feeding mechanism for a weft loom, including a frame, a yarn feeding tray, a weft feeding component and a control device. The yarn feeding tray is installed on the frame, and guide roller A and guide roller B for feeding weft yarn are also installed on the frame.

[0007] A crossbeam is installed on one side of the frame, and a guide roller C is installed on the crossbeam;

[0008] The weft feeding assembly includes a fixed plate, a yarn feeding frame, a yarn feeding roller, a conveying roller A, a conveying roller B, a yarn feeding plate, and an air pump. The fixed plate is fixedly connected to the cross frame, the yarn feeding frame is mounted on the fixed plate, the yarn feeding roller is located inside the yarn feeding frame, and an air extraction port is provided on the fixed plate. The air extraction port is connected to the air pump via a flexible hose.

[0009] Furthermore, the yarn feeding plate is disposed on one side of the yarn feeding frame, and a feeding mechanism is disposed at the bottom of the yarn feeding plate.

[0010] Furthermore, the feeding mechanism includes a drive motor, a lead screw, and a slider. The output end of the drive motor is connected to the lead screw for mutual driving. The slider is mounted on the lead screw, and the slider and the bottom of the yarn feeding plate are fixed to each other by a connecting piece.

[0011] Furthermore, a photoelectric sensor is installed at the bottom of the yarn feeding frame, and a counter is installed on the frame. The photoelectric sensor and the counter are connected to each other by connecting wires.

[0012] Furthermore, a guide roller D is installed on the fixed plate, which is used to guide and convey the weft yarn to the yarn feeding roller.

[0013] Furthermore, a flattening mechanism and a cutting mechanism are installed at the lower end of the control device. The flattening mechanism is located between conveyor roller A and conveyor roller B. The cutting mechanism includes a drive cylinder A and a cutter. The drive cylinder A is fixedly connected to the bottom of the control device through a fixing frame, and the drive cylinder A and the cutter are mutually driven and connected.

[0014] Furthermore, the weft feeding assembly also includes a yarn pressing plate, which is disposed above the yarn feeding plate and is connected to the drive cylinder B for mutual driving.

[0015] The advantages of this utility model are as follows: This utility model provides a weft yarn feeding mechanism for a loom, which, through innovative design and integration of multiple functional components, achieves automatic adjustment of weft yarn tension and precise control during the weft yarn feeding process. Specifically, this weft yarn feeding mechanism has the following significant advantages:

[0016] 1. Automatic Weft Tension Adjustment: By incorporating an air pump in the weft feeding assembly and connecting it to the air extraction port on the fixed plate via a hose, the tension of the weft yarn can be effectively adjusted using the principle of negative pressure suction. This design not only ensures that the weft yarn maintains appropriate tension throughout the entire weft feeding process, guaranteeing that the weft yarn remains straight and under sufficient tension during transport without twisting, but also avoids inconsistencies caused by manual adjustment, thereby improving fabric quality.

[0017] 2. Precise Weft Yarn Feed Counting: A photoelectric sensor is installed at the bottom of the yarn feeding frame, and a counter is mounted on the frame; the two are connected by wires. When a weft yarn passes through, the photoelectric sensor triggers a signal, and the counter records the number of weft yarns accordingly. This mechanism helps to achieve precise control of the weft yarn feed quantity, providing strong support for quality management and efficiency improvement in the production process. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] in:

[0021] 1. Frame; 2. Yarn tray; 3. Weft yarn;

[0022] 4. Guide roller A; 5. Guide roller B; 6. Crossbeam;

[0023] 7. Guide roller C; 8. Guide roller D; 9. Yarn feed roller;

[0024] 10. Yarn feeding frame; 11. Air extraction port; 12. Air pump;

[0025] 13. Suction pipe; 14. Photoelectric sensor; 15. Counter;

[0026] 16. Connecting wires; 17. Fixing plate; 18. Conveyor roller A;

[0027] 19. Conveyor roller B; 20. Control device; 21. Flattening mechanism;

[0028] 22. Fixture; 23. Drive motor; 24. Lead screw;

[0029] 25. Slider; 26. Connecting piece; 27. Yarn feeder;

[0030] 28. Drive cylinder A; 29. ​​Cutter; 30. Drive cylinder B;

[0031] 31. Yarn pressing board. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Example 1:

[0035] Figure 1 This is a schematic diagram of the structure of the present invention, as shown below. Figure 1The diagram illustrates a weft yarn feeding mechanism for a loom, comprising a frame 1, a yarn feeding tray 2, a weft feeding assembly, and a control device 20. The control device 20 coordinates and controls the entire weft yarn feeding mechanism. The yarn feeding tray 2 is mounted on the frame 1. Guide rollers A4 and B5 for conveying the weft yarn 3 are also mounted on the frame 1. Guide rollers A4 and B5, mounted on the frame 1, convey the weft yarn 3 smoothly from the yarn feeding tray 2 to the weft feeding assembly, while maintaining the tension and direction of the weft yarn 3. The frame 1 is the basic support structure for the entire weft yarn feeding mechanism, used to mount the yarn feeding tray 2 and a crossbeam 6. A crossbeam 6 is mounted on one side of the frame 1, and guide rollers C7 are mounted on the crossbeam 6 to further guide the conveying path of the weft yarn 3, ensuring that the weft yarn 3 maintains the correct direction and tension before entering the weft feeding assembly. The yarn feeding tray 2 stores the weft yarn 3. The required number of spindles or yarn trays is calculated based on information such as the fiber areal density of the fabric, and they are then mounted on the frame 1. The yarn feeding tray 2 ensures a continuous supply of weft yarn 3, providing raw materials for the subsequent weft feeding process. The weft feeding assembly includes a fixed plate 17, a yarn feeding frame 10, a yarn feeding roller 9, a conveyor roller A18, a conveyor roller B19, a yarn feeding plate 27, and an air pump 12. The fixed plate 17 is fixedly connected to the cross frame 6. The yarn feeding frame 10 is installed on the fixed plate 17. The yarn feeding roller 9 is located inside the yarn feeding frame 10 and can roll laterally within the yarn feeding frame 10. An air extraction port 11 is provided on the fixed plate 17, and the air extraction port 11 is connected to the air pump 12 through a hose. The fixed plate 17 is the main support structure of the weft feeding assembly. It provides mounting positions for components such as the yarn feeding frame 10, yarn feeding roller 9, conveyor roller A18, conveyor roller B19, and yarn feeding plate 27, and is connected to the air pump 12 through the air extraction port 11 to adjust the tension of the weft yarn 3. The yarn feeding frame 10 provides a fixed channel for the weft yarn 3, ensuring that the weft yarn 3 remains neat and orderly during the weft feeding process. The yarn feeding roller 9 is used to transport the weft yarn 3. By drawing air into the yarn feeding frame 10 through the air pump 12, the yarn feeding roller 9 can be driven to roll laterally within the yarn feeding frame 10. The air pump 12 can adjust the tension of the weft yarn 3 using the principle of negative pressure suction. It ensures that the weft yarn 3 maintains appropriate tension throughout the weft feeding process, avoiding the weft yarn 3 from being too loose or too tight, thereby improving the quality of the fabric.

[0036] In this invention, the yarn feeding plate 27 is disposed on one side of the yarn feeding frame 10. A feeding mechanism is provided at the bottom of the yarn feeding plate 27. The yarn feeding plate 27 is driven by a drive motor 23 to move laterally, feeding the weft yarn 3 into the shed of the loom. The yarn feeding plate 27 also cooperates with the pressing plate 31 to ensure that the weft yarn 3 is accurately clamped and cut during the weft feeding process. The feeding mechanism includes a drive motor 23, a lead screw 24, and a slider 25. The output end of the drive motor 23 is mutually driven and connected to the lead screw 24. The slider 25 is mounted on the lead screw 24 and is fixed to the bottom of the yarn feeding plate 27 by a connecting piece 26. The drive motor 23 can drive the lead screw 24 to rotate, and the slider 25 moves along the lead screw 24, thereby driving the yarn feeding plate 27 to move laterally. The feeding mechanism realizes the precise delivery of the weft yarn 3, ensuring that the weft yarn 3 can accurately enter the shed.

[0037] This invention features a photoelectric sensor 14 installed at the bottom of the yarn feeding frame 10, and a counter 15 installed on the frame 1. The photoelectric sensor 14 and the counter 15 are connected to each other via a connecting wire 16. The photoelectric sensor 14, installed at the bottom of the yarn feeding frame 10, triggers a signal when the weft yarn 3 passes through. The photoelectric sensor 14 and counter 15 work together to achieve precise control of the weft yarn feeding quantity, which helps in quality management and efficiency improvement during production. When the photoelectric sensor 14 triggers a signal, the counter 15 records the quantity of weft yarn 3. The counter 15 ensures the accuracy of the weft yarn feeding quantity, facilitating material management and quality control during production.

[0038] A guide roller D8 is installed on the fixed plate 17. The guide roller D8 is used to guide and convey the weft yarn 3 to the feed roller 9. A flattening mechanism 21 and a cutting mechanism are installed at the lower end of the control device 20. The flattening mechanism 21 is located between the conveyor roller A18 and the conveyor roller B19. The cutting mechanism includes a drive cylinder A28 and a cutter 29. The drive cylinder A28 is fixedly connected to the bottom of the control device 20 through a fixing frame 22. The drive cylinder A28 and the cutter 29 are mutually driven and connected. The drive cylinder A28 provides power so that the cutter 29 can accurately cut the weft yarn 3. When the weft yarn 3 passes through, the cutting mechanism operates to cut the weft yarn 3, ensuring that the length of the weft yarn 3 is consistent in each weft feeding process.

[0039] The weft feeding assembly also includes a yarn pressing plate 31, which is positioned above the yarn feeding plate 27. The yarn pressing plate 31 is mutually driven and connected to the drive cylinder B30. During the weft feeding process, the yarn pressing plate 31 can press down on the weft yarn 3, ensuring that the weft yarn 3 can be accurately clamped. The drive cylinder B30 is mutually driven and connected to the yarn pressing plate 31. The drive cylinder B30 provides power so that the yarn pressing plate 31 can press down on the weft yarn 3 during the weft feeding process, ensuring that the weft yarn 3 is accurately clamped during the weft feeding process.

[0040] Working Principle: In use, this invention calculates the required number of spindles or yarn trays based on information such as the fabric's fiber density. A corresponding number of yarn trays 2 are hung on the frame 1 or yarn tray frame. The head of each spindle (or tray) is removed, and the head of the weft yarn 3 passes through a predetermined path, being pulled to the cutter 29 to ensure the weft yarn 3 can smoothly enter the subsequent weft feeding process. Then, the control device 20 starts the process, and the drive motor 23 drives the yarn feeding plate 27 to move laterally to one side of the loom. Once in position, the pressing plate 31 presses down on the weft yarn 3, causing the loom's rapier belt to move, causing the rapier head clamping the weft yarn 3 to pass through the shed. At this point, the cutter 29 on the pressing plate 31 cuts the weft yarn 3. The combing and beating mechanism in the loom pushes the single weft yarn 3 introduced into the shed towards the weft opening, thus forming the fabric.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A weft feeding mechanism for a loom, comprising a frame (1), a yarn feeding disc (2), a weft feeding assembly and a control device (20), wherein the yarn feeding disc (2) is mounted on the frame (1), and a guide roller A (4) and a guide roller B (5) for conveying the weft yarn (3) are also mounted on the frame (1); Its features are, A crossbeam (6) is installed on one side of the frame (1), and a guide roller C (7) is installed on the crossbeam (6); The weft feeding assembly includes a fixed plate (17), a yarn feeding frame (10), a yarn feeding roller (9), a conveyor roller A (18), a conveyor roller B (19), a yarn feeding plate (27), and an air pump (12). The fixed plate (17) is fixedly connected to the cross frame (6). The yarn feeding frame (10) is installed on the fixed plate (17). The yarn feeding roller (9) is located inside the yarn feeding frame (10). An air extraction port (11) is provided on the fixed plate (17). The air extraction port (11) is connected to the air pump (12) through a hose.

2. The weft feeding mechanism of a loom according to claim 1, characterized in that: The yarn feeding plate (27) is located on one side of the yarn feeding frame (10), and a feeding mechanism is provided at the bottom of the yarn feeding plate (27).

3. The weft feeding mechanism of a loom according to claim 2, characterized in that: The feeding mechanism includes a drive motor (23), a lead screw (24) and a slider (25). The output end of the drive motor (23) is connected to the lead screw (24) for mutual driving. The slider (25) is mounted on the lead screw (24). The slider (25) and the bottom of the yarn feeding plate (27) are fixed to each other by a connecting piece (26).

4. The weft feeding mechanism of a loom according to claim 1, characterized in that: A photoelectric sensor (14) is installed at the bottom of the yarn feeding frame (10), and a counter (15) is installed on the frame (1). The photoelectric sensor (14) and the counter (15) are connected to each other by a connecting wire (16).

5. The weft feeding mechanism of a loom according to claim 1, characterized in that: A guide roller D (8) is installed on the fixed plate (17), which is used to guide and convey the weft yarn (3) to the yarn feeding roller (9).

6. The weft feeding mechanism of a loom according to claim 1, characterized in that: The lower end of the control device (20) is equipped with a flattening mechanism (21) and a cutting mechanism. The flattening mechanism (21) is located between the conveyor roller A (18) and the conveyor roller B (19). The cutting mechanism includes a drive cylinder A (28) and a cutter (29). The drive cylinder A (28) is fixedly connected to the bottom of the control device (20) through a fixing frame (22). The drive cylinder A (28) and the cutter (29) are mutually driven and connected.

7. The weft feeding mechanism of a loom according to claim 1, characterized in that: The weft feeding assembly also includes a yarn pressing plate (31), which is positioned above the yarn feeding plate (27). The yarn pressing plate (31) and the driving cylinder B (30) are mutually connected and driven.

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