Composite three-dimensional braided large throw yarn carrier

Abstract

The application discloses a composite material three-dimensional weaving large yarn-throwing yarn carrier, which comprises a yarn storage tube, a yarn outlet at the top of the yarn carrier, a pulley block installed on one side of the yarn carrier and below the yarn outlet, a fixed pulley close to the yarn outlet and a movable pulley away from the yarn outlet, a sliding rod between the fixed pulley and the movable pulley, the axis of the sliding rod being parallel to the axis of the yarn storage tube, a tension spring sleeved on the sliding rod, and the movable pulley moving up and down along the sliding rod; when weaving, the yarn is stretched out from the yarn storage tube, passes through and winds around the movable pulley and the fixed pulley, and then passes out from the yarn outlet; when the movable pulley is at the position closest to the fixed pulley, the tension spring is compressed, and the yarn tension is the largest; when the yarn tension is reduced, the tension spring is stretched, the movable pulley slides downward and away from the fixed pulley, the yarn moves downward along the movable pulley, and yarn throwing is completed.

Description

Technical Field

[0001] This invention relates to the field of composite material weaving technology, and in particular to a composite material three-dimensional weaving large yarn-carrying device. Background Technology

[0002] The yarn carrier is an indispensable core device in 3D braiding technology, undertaking the important functions of yarn storage and supply, and independently participating in key production processes such as yarn feeding, yarn take-up, and tension control. The yarn throwing distance is a crucial functional parameter for the yarn carrier during braiding; it refers to the adjustable length of the yarn on the carrier. Because the distance from different positions to the mandrel varies on large 3D braiding machines, the yarn carrier needs to adjust the amount of yarn thrown to ensure the yarn remains taut during braiding. With the increasing scale and flexibility of modern automated 3D braiding equipment for composite materials, higher requirements have been placed on the yarn throwing distance of the yarn carrier; the existing yarn throwing distances are no longer sufficient to meet the needs of large-scale 3D braiding equipment. Summary of the Invention

[0003] Purpose of the invention: To address the shortcomings of existing yarn carriers, such as short and non-adjustable yarn throwing distance, this invention provides a composite material three-dimensional weaving large yarn throwing yarn carrier.

[0004] Technical Solution: To solve the above problems, this invention employs a composite material three-dimensional weaving yarn throwing and carrying device, including a yarn storage tube, a yarn outlet located at the top of the yarn carrying device, and a pulley assembly installed on one side of the yarn carrying device and below the yarn outlet. The pulley assembly includes a fixed pulley near the yarn outlet and a movable pulley away from the yarn outlet. A sliding rod is provided between the fixed pulley and the movable pulley, and the axis of the sliding rod is parallel to the axis of the yarn storage tube. A tension spring is sleeved on the sliding rod, and the movable pulley moves up and down along the sliding rod. During weaving, the yarn extends from the yarn storage tube, passes through and wraps around the movable pulley and the fixed pulley, and then exits from the yarn outlet. When the movable pulley is in the position closest to the fixed pulley, the tension spring is compressed, and the yarn tension is at its maximum. When the yarn tension decreases, the tension spring is stretched, the movable pulley slides downward and away from the fixed pulley, and the yarn follows the movable pulley downward to complete the yarn throwing.

[0005] Furthermore, it also includes a fixing block connected to the top of the yarn carrier, the fixed pulley is fixedly installed on the fixing block, and one end of the sliding rod is connected to the fixing block.

[0006] Furthermore, it also includes a movable slider sleeved on the sliding rod, and a fixed pulley installed on the movable slider, which moves up and down along the sliding rod with the movable slider.

[0007] Furthermore, the fixed pulley and the movable pulley have the same pulley structure. The pulley structure includes a pulley shaft and a plurality of adjusting pulleys arranged parallel to the pulley shaft. The axis of the adjusting pulley is on the same straight line as the axis of the pulley shaft. The gap between adjacent adjusting pulleys forms a pulley groove for winding yarn.

[0008] Furthermore, the pulley structure also includes a pulley pin that passes through the adjusting pulley, the axis of the pulley pin being parallel to the axis of the pulley shaft, and the pulley pin being spaced a certain distance from the pulley shaft.

[0009] Furthermore, the bottom of the yarn storage tube is provided with an annular plate with a flower wheel at the bottom, and a centrifugal switch is provided below the annular plate. When the centrifugal force exceeds a preset value, the centrifugal switch extends and engages with the flower wheel, causing the yarn carrier to stop rotating.

[0010] Furthermore, a lever is connected to the inner side of the centrifugal switch. One end of the lever is connected to the movable slider via a coupling, and the other end is connected to the centrifugal switch. When the movable slider slides down to the bottom, the lever activates the centrifugal switch, causing the centrifugal switch to engage in the flower wheel.

[0011] Furthermore, it also includes a yarn carrier base, on which the yarn storage tube, centrifugal switch, and lever are all mounted, and one end of the sliding rod is fixedly mounted on the yarn carrier base.

[0012] Furthermore, the top of the yarn storage tube is provided with a yarn storage tube fixing rod for fixing the yarn storage tube. One end of the yarn storage tube fixing rod is inserted into the yarn storage tube, and the other end passes through the top of the yarn carrier.

[0013] Furthermore, a pull rod is provided parallel to the sliding rod, and the pull rod is provided with a handle for lifting the yarn carrier.

[0014] Beneficial effects: Compared with the prior art, the significant advantages of this invention are (1) setting up a pulley group so that the moving pulley can automatically adjust its position according to the yarn tension during the weaving process, thereby realizing the function of large yarn throwing and adjustable throwing distance during the spinning process of the yarn carrier; (2) setting up a centrifugal switch to cooperate with the pattern wheel of the yarn storage tube to realize automatic stop when the speed of the yarn carrier is too fast or when the yarn breaks, ensuring the normal operation of the weaving equipment; (3) setting up a pulley pin to limit the range of yarn movement and avoid the yarn from jumping and getting knotted and stuck. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the yarn carrier of the present invention;

[0016] Figure 2 This is a cross-sectional schematic diagram of the yarn carrier of the present invention;

[0017] Figure 3 This is a schematic diagram of the pulley structure of the yarn carrier of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the centrifugal switch, lever, and pattern wheel of the yarn carrier of the present invention. Detailed Implementation

[0019] like Figure 1 and Figure 2 As shown in this embodiment, a composite material three-dimensional braided yarn carrier includes a yarn storage tube 1, a yarn outlet 2, a pulley system, a sliding rod 5, and a yarn carrier base 15. The yarn storage tube 1 is mounted on the yarn carrier base 15. A yarn storage tube fixing rod 16 is provided at the top of the yarn storage tube 1 for fixing the yarn storage tube 1. One end of the fixing rod 16 is inserted into the yarn storage tube 1, and the other end passes through the top of the yarn carrier, fixing the yarn storage tube 1 and providing a guiding function to make the yarn output from the yarn storage tube 1 more stable. The yarn outlet 2 is located at the top of the yarn carrier, and the pulley system is installed on one side of the yarn carrier and below the yarn outlet 2. The pulley system includes a fixed pulley 3 near the yarn outlet 2 and a movable pulley 4 away from the yarn outlet 2. A fixed block 7 connected to the top of the yarn carrier is located below the yarn outlet 2. The fixed pulley 3 is fixedly mounted on the fixed block 7. A movable slider 8 is sleeved on the sliding rod 5, and the fixed pulley 3 is mounted on the movable slider 8. The fixed pulley 3 can move up and down along the sliding rod 5 with the movable slider 8. One end of the sliding rod 5 is connected to the fixed block 7, and the other end is connected to the yarn carrier base 15. The axis of the sliding rod 5 is parallel to the axis of the yarn storage tube 1. A pull rod 17, parallel to the sliding rod 5, is also provided between the fixed block 7 and the yarn carrier base 15. The pull rod 17 has a handle 18 for lifting the yarn carrier. During weaving, some yarn types are special and cannot be directly touched by hand. The handle can be used to lift the yarn carrier to avoid direct contact with the yarn.

[0020] like Figure 3 As shown, the fixed pulley 3 and the movable pulley 4 have the same pulley structure, which includes a pulley shaft 9, four adjusting pulleys 10 arranged parallel to the pulley shaft 9, and a pulley pin 12. The axis of the adjusting pulley 10 is on the same straight line as the axis of the pulley shaft 9, and the gap between adjacent adjusting pulleys 10 forms a pulley groove 11 for winding the yarn. The pulley pin 12 is cylindrical, passes through the four adjusting pulleys 10, and its axis is parallel to the axis of the pulley shaft 9. The pulley pin 12 is spaced apart from the pulley shaft 9. During weaving, the yarn is wound in the pulley groove 11. If the weaving equipment moves too fast, the yarn will jump, which may cause the yarn to knot and get stuck. The pulley pin 12 can restrict the movement of the yarn within the gap between the pulley pin 12 and the pulley shaft 9, thus preventing the yarn from jumping.

[0021] like Figure 4As shown, a centrifugal switch 13 and a lever 14 are also installed on the yarn carrier base 15. The bottom of the yarn storage tube 1 is equipped with an annular plate with a bottom flower wheel 19. One end of the lever 14 is connected to the centrifugal switch 13, and the other end is connected to the movable slider 8 via a coupling. When the centrifugal force of the yarn storage tube 1 exceeds a preset value, the centrifugal switch 13 extends and engages with the flower wheel 19, stopping the yarn carrier from rotating. When the speed of the yarn storage tube 1 is too fast, the yarn on the tube is prone to scattering due to inertia. By setting the centrifugal switch 13, the yarn storage tube is stopped when the speed is too fast, preventing the yarn from scattering and ensuring the normal operation of the yarn carrier. In addition, when the movable slider 8 slides down to the bottom, the lever 14 activates the centrifugal switch 13, which engages with the flower wheel 19, stopping the yarn carrier from rotating. Under normal weaving conditions, due to yarn tension, the moving slider is pulled taut and positioned near the yarn outlet. If the moving slider falls to a position close to the base of the yarn carrier, it is considered that the yarn carrier has broken and the yarn carrier needs to be stopped. By cooperating with lever 14 and centrifugal switch 13, the moving slider will fall to a position close to the base of the yarn carrier and automatically stop the yarn carrier, thus preventing the equipment from continuing to work when the yarn is broken.

[0022] The working process of the composite material three-dimensional braided yarn throwing and carrying device of the present invention is as follows: The yarn is drawn from the yarn storage tube 1 and wound sequentially around the pulley grooves 11 of the movable pulley 4 and the fixed pulley 3, and then passes out from the yarn outlet 2. In this embodiment, the pulley structure has three pulley grooves 11, so the yarn can be wound back and forth three times on the movable pulley 4 and the fixed pulley 3. At this time, the maximum yarn throwing amount of the yarn carrying device is 6 times the maximum distance between the movable pulley and the fixed pulley. The number of times the pulleys are wound can be adjusted according to actual needs to adjust the yarn throwing amount. In the initial state, the yarn tension is large, and the tension spring 6 is in a compressed state due to the yarn tension. The movable pulley 4 is located at the position closest to the fixed pulley 3. When the yarn relaxes, the yarn tension decreases or even disappears, the tension spring 6 is stretched outward, the movable pulley 4 moves downward away from the fixed pulley 3, and the yarn follows the movable pulley 4 downward to complete the yarn throwing. Since the movable pulley 4 can slide freely on the sliding rod, when the yarn tension is large, the movable pulley 4 can stay at any position on the sliding rod. Therefore, the yarn throwing distance can be automatically adjusted according to the actual working conditions of the weaving equipment.

[0023] This invention utilizes a pulley system to automatically adjust the position of the movable pulley based on yarn tension during the weaving process, enabling adjustable yarn throwing distance and maximum throw volume during the spinning process. Simultaneously, a centrifugal switch, in conjunction with the yarn storage tube's pattern wheel, automatically stops the yarn carrier when its speed is too high or when yarn breaks, ensuring the normal operation of the weaving equipment. Furthermore, pulley pins limit the yarn's range of motion, preventing yarn jumps that could lead to knots and jamming.

Claims

1. A composite material three-dimensional braided yarn carrier, comprising a yarn storage tube (1) and a yarn outlet (2) located at the top of the yarn carrier, characterized in that, It also includes a pulley assembly installed on one side of the yarn carrier and located below the yarn outlet (2). The pulley assembly includes a fixed pulley (3) near the yarn outlet (2) and a movable pulley (4) away from the yarn outlet (2). A sliding rod (5) is provided between the fixed pulley (3) and the movable pulley (4). The axis of the sliding rod (5) is parallel to the axis of the yarn storage tube (1). A tension spring (6) is sleeved on the sliding rod (5). The movable pulley (4) moves up and down along the sliding rod (5). When weaving, the yarn extends from the yarn storage tube (1), passes through and wraps around the movable pulley (4) and the fixed pulley (3), and then passes out from the yarn outlet (2). When the movable pulley (4) is in the position closest to the fixed pulley (3), the tension spring (6) is pressed, and the yarn tension is at its maximum. When the yarn tension decreases, the tension spring (6) is stretched, and the movable pulley (4) slides down and away from the fixed pulley (3). The yarn follows the movable pulley (4) downward to complete the yarn throwing. It also includes a fixed block (7) connected to the top of the yarn carrier, the fixed pulley (3) is fixedly installed on the fixed block (7), and one end of the sliding rod (5) is connected to the fixed block (7); The fixed pulley (3) and the movable pulley (4) have the same pulley structure. The pulley structure includes a pulley shaft (9) and a plurality of adjusting pulleys (10) arranged parallel to the pulley shaft (9). The axis of the adjusting pulley (10) is on the same straight line as the axis of the pulley shaft (9). The gap between adjacent adjusting pulleys (10) forms a pulley groove (11) for winding yarn. The bottom of the yarn storage tube (1) is provided with an annular plate with a flower wheel (19) at the bottom. A centrifugal switch (13) is provided below the annular plate. When the centrifugal force exceeds the preset value, the centrifugal switch (13) extends out and is inserted into the flower wheel (19), so that the yarn carrier stops rotating.

2. The composite material three-dimensional braiding yarn carrier as described in claim 1, characterized in that, It also includes a movable slider (8) sleeved on the sliding rod (5), and a fixed pulley (3) installed on the movable slider (8). The fixed pulley (3) moves up and down along the sliding rod (5) with the movable slider (8).

3. The composite material three-dimensional braiding yarn carrier as described in claim 1, characterized in that, The pulley structure also includes a pulley pin (12) that passes through the adjusting pulley (10). The axis of the pulley pin (12) is parallel to the axis of the pulley shaft (9), and the pulley pin (12) and the pulley shaft (9) are separated by a certain distance.

4. The composite material three-dimensional braiding yarn carrier as described in claim 1, characterized in that, The centrifugal switch (13) is connected to a lever (14) on its inner side. One end of the lever (14) is connected to the movable slider (8) via a coupling, and the other end is connected to the centrifugal switch (13). When the movable slider (8) slides down to the bottom, the lever (14) moves the centrifugal switch (13) so that the centrifugal switch (13) is locked into the flower wheel (19).

5. The composite material three-dimensional braiding yarn carrier as described in claim 1, characterized in that, It also includes a yarn carrier base (15), the yarn storage tube (1), centrifugal switch (13), and lever (14) are all installed on the yarn carrier base (15), and one end of the sliding rod (5) is fixedly installed on the yarn carrier base (15).

6. The composite material three-dimensional braiding yarn carrier as described in claim 1, characterized in that, The top of the yarn storage tube (1) is provided with a yarn storage tube fixing rod (16) for fixing the yarn storage tube (1). One end of the yarn storage tube fixing rod (16) is inserted into the yarn storage tube (1), and the other end passes through the top of the yarn carrier.

7. The composite material three-dimensional braiding yarn carrier as described in claim 1, characterized in that, It also has a pull rod (17) arranged parallel to the sliding rod (5), and the pull rod (17) is provided with a handle (18) for lifting the yarn carrier.

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