Knit fabric winding tension control device

Abstract

The utility model relates to the technical field of winding tension control device, concretely is knitting cloth winding tension control device, including the bottom plate, be provided with adjusting assembly and damping assembly on the bottom plate, two swing rods are rotationally arranged in the adjusting assembly, the opposite end outside of two swing rods and pressure axis all rotationally installed with counterweight seat, the rotary disc side surface is equipped with the mounting groove that evenly distributed, the friction block is fixedly connected respectively in the end of a plurality of springs, in the utility model, two swing rods rotate around the rotation axis through counterweight block gravity, swing rod compresses the gravity effect of counterweight block, realizes tension buffer, effectively reduced maintenance cost, the friction block expands outward under the centrifugal force effect, increases the rotation resistance of transmission shaft, prevents the speed too fast and leads to the knitting cloth winding tension to drop, maintains the stable tension.

Description

Technical Field

[0001] This utility model relates to the technical field of winding tension control devices, specifically a winding tension control device for knitted fabrics. Background Technology

[0002] Knitted fabrics are widely used in clothing, home textiles, medical care and other fields due to their advantages such as good elasticity and comfortable wear. In the entire production process of knitted fabrics, the tension stability of the winding stage is the key to determining the product quality. If the tension is too small, it will easily lead to loose winding and wrinkles on the fabric surface, requiring additional flattening treatment during subsequent cutting and processing. If the tension is too large, it will cause the knitted fabric fibers to stretch and deform, resulting in excessive shrinkage after washing of the finished product. It may also break the yarn and generate broken fabric waste.

[0003] Currently, the pressure of fabric winding is mainly adjusted through a sensor structure. The sensor monitors the surface pressure during fabric winding to determine the tension of the winding, which is then adjusted through a drive structure. For example, a Chinese patent with publication number CN222433655U discloses a constant tension anti-deviation fabric winding mechanism. The pressure at the tension roller is transmitted to a pressure sensor through a connecting plate, and the pressure sensor detects the tension of the fabric at the tension roller. By comparing it with a pre-set reasonable value, the tension of the fabric at the tension roller is determined. When the tension is low, the external feeding mechanism is controlled to slow down the feeding speed until the tension increases to the set value and then stops. When the tension is high, the external feeding mechanism is controlled to speed up the feeding speed until the tension decreases to the set value and then stops, thus achieving constant control of the fabric tension and preventing deviation.

[0004] In the aforementioned literature, existing fabric winding tension control devices rely on sensor structures for detection and adjustment. However, the use of sensors and drive mechanisms increases maintenance costs, thereby increasing production costs. Furthermore, they cannot limit the rotation speed at the winding roller. During the winding process, the tension fluctuation of the fabric on the winding roller increases with the increase of the winding diameter, resulting in the initial tension of the fabric being lower than the tension in the later stages of winding, leading to an unstable tension state of the fabric during the winding process. Therefore, a knitted fabric winding tension control device is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, such as the increased maintenance costs and production costs associated with the use of sensors and drive mechanisms, and the increased tension fluctuations during fabric winding as the winding diameter increases, resulting in lower initial fabric tension than later winding stages, this invention proposes a knitted fabric winding tension control device.

[0006] The technical solution adopted by this utility model to solve its technical problem is: the knitted fabric winding tension control device of this utility model includes a base plate, an adjustment component and a damping component are provided on the base plate, two parallel guide shafts are rotatably installed between the adjustment component and the damping component and on the base plate, and a winding shaft is internally connected to the damping component. The adjustment assembly contains two swing arms that are rotatably mounted. A pressure shaft is rotatably mounted between the ends of the two swing arms that are opposite to the damping assembly. A counterweight seat is rotatably mounted on the outer side of the ends of the two swing arms opposite to the pressure shaft. A counterweight block is fixed on each counterweight seat by a pin. The damping assembly contains a rotating disk, and the rotation center axis of the rotating disk is connected to one end of the winding shaft. The rotating disk has evenly distributed mounting grooves on its side, and each mounting groove contains a spring. Friction blocks are slidably disposed in the opening of each mounting groove, and each friction block is fixedly connected to the end of a plurality of springs. An outer cylinder is disposed on the outside of the rotating disk, and the rotation trajectories of the plurality of friction blocks intersect with the inner wall of the outer cylinder.

[0007] Preferably, the adjustment assembly includes two No. 1 upright plates and two No. 2 upright plates fixed on the base plate. The two swing rods are respectively rotatably installed on the opposite side walls of the two No. 2 upright plates. The No. 1 upright plates are all located on the side opposite to the swing rod and the counterweight seat. A No. 1 guide groove is opened on the side of each No. 1 upright plate. A No. 1 slider is slidably arranged in each No. 1 guide groove. The pressure shaft is rotatably installed between the two No. 1 sliders.

[0008] Preferably, a second guide groove is provided on the side wall opposite to the counterweight seat of the swing rod, and a support rod is slidably arranged in the second guide groove. The two support rods are fixedly connected to the side walls opposite to the two first sliders, and a baffle is fixedly connected to the end of each support rod.

[0009] Preferably, each of the two upright plates has an arc-shaped guide groove on its side wall, and the midpoint of the arc-shaped guide groove coincides with the rotational connection axis of the swing rod and the two upright plates. Each of the arc-shaped guide grooves has a second slider slidably installed inside it, and the two second sliders are respectively rotatably installed at the ends of the two swing rods opposite to the second guide groove.

[0010] Preferably, the damping assembly includes two No. 3 upright plates fixed on the base plate. Multiple support shafts are rotatably mounted on the inner sides of the two No. 3 upright plates in a U-shape. The central shaft of the winding shaft is rotatably fitted into the U-shaped opening of the multiple support shafts arranged in a U-shape on both sides. A transmission shaft is fixed to the rotation center shaft of one of the support shafts, and the rotating disk is fixed to the end of the transmission shaft. The outer cylinder is fixed to the side wall of the No. 3 upright plate.

[0011] Preferably, the damping assembly further includes a motor fixed to the base plate, the end of the motor being fixedly connected to a magnetic coupling, and two parallel guide shafts being rotatably mounted on the base plate on the side opposite to the second guide shaft of the adjusting assembly, and the rotational connecting shaft of the first guide shaft is a damping shaft.

[0012] Preferably, both ends of the magnetic coupling are rotatably mounted on the base plate, and the other end of the magnetic coupling is connected to the rotation center shaft of the rotating disk via a belt and a drive wheel.

[0013] The advantages of this utility model are: 1. This utility model uses the gravity of a counterweight to pull two swing rods to rotate around a pivot. The swing rods compress the gravity of the counterweight to achieve tension buffering. Furthermore, the fabric tension can be controlled and adjusted by increasing or decreasing the number of counterweights. Compared with traditional fabric tension control devices, this structure is simpler and effectively reduces maintenance costs.

[0014] 2. As the winding speed increases, the friction block expands outward under the action of centrifugal force, comes into contact with the inner wall of the outer cylinder to generate friction, increases the rotational resistance of the drive shaft, and thus suppresses the rotational speed of the take-up shaft, preventing the fabric winding tension from decreasing due to excessive speed. When the roll diameter increases and the speed tends to decrease, the centrifugal force decreases, the spring pulls the friction block back to its original position, the damping force decreases, and the tension remains stable. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the first three-dimensional structure in this embodiment; Figure 2 This is a cross-sectional enlarged schematic diagram of the main structure of the adjustment component in this embodiment; Figure 3 This is an enlarged schematic diagram of the main structure of the adjustment component in this embodiment; Figure 4 This is an enlarged schematic diagram of the main structure of the damping component in this embodiment; Figure 5 This is a cross-sectional enlarged schematic diagram of the main structure of the rotating disk in this embodiment; Figure 6 This is an enlarged schematic diagram of the main structure of the support shaft in this embodiment; Figure 7This is an enlarged schematic diagram of area A in the cross-sectional view of the main structure of the rotating disk in this embodiment.

[0017] In the diagram: 1. Base plate; 11. Guide shaft No. 1; 12. Guide shaft No. 2; 13. Rewind shaft; 2. Adjustment assembly; 21. First vertical plate; 22. First guide groove; 23. First slider; 24. Pressure shaft; 25. Support rod; 26. Second vertical plate; 27. Swing rod; 28. Second guide groove; 29. ​​Baffle; 210. Arc-shaped guide groove; 211. Second slider; 212. Counterweight seat; 213. Counterweight block; 3. Damping assembly; 31. No. 3 vertical plate; 32. Support shaft; 33. Drive shaft; 34. Rotating disc; 35. Mounting slot; 36. Friction block; 37. Spring; 38. Outer cylinder; 39. Magnetic coupling; 310. Motor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figure 1-7 As shown, the knitted fabric winding tension control device includes a base plate 1, on which an adjustment component 2 and a damping component 3 are provided. Two parallel guide shafts 12 are rotatably installed between the adjustment component 2 and the damping component 3 on the base plate 1. A winding shaft 13 is internally connected to the damping component 3. The adjustment component 2 is rotatably provided with two swing rods 27. The two swing rods 27 are rotatably provided with a pressure shaft 24 between their ends facing the damping component 3. The outer sides of the ends of the two swing rods 27 opposite to the pressure shaft 24 are rotatably mounted with counterweight seats 212. Each counterweight seat 212 is fixed with a counterweight block 213 by a pin. The damping assembly 3 is provided with a rotating disk 34, and the rotation center axis of the rotating disk 34 is connected to one end of the winding shaft 13. The rotating disk 34 has evenly distributed mounting grooves 35 on its side, and a spring 37 is fixed in each mounting groove 35. Friction blocks 36 are slidably arranged in the opening of each mounting groove 35, and the friction blocks 36 are respectively fixedly connected to the ends of multiple springs 37. An outer cylinder 38 is provided on the outside of the rotating disk 34, and the rotation trajectory of multiple friction blocks 36 intersects with the inner wall of the outer cylinder 38.

[0020] The adjustment assembly 2 includes two first upright plates 21 and two second upright plates 26 fixed on the base plate 1. The two swing rods 27 are respectively rotatably installed on the opposite side walls of the two second upright plates 26. The first upright plates 21 are all located on the side opposite to the swing rods 27 and the counterweight seat 212. The first upright plates 21 are each provided with a first guide groove 22. A first slider 23 is slidably arranged in the first guide groove 22. The pressure shaft 24 is rotatably installed between the two first sliders 23.

[0021] The swing rod 27 and the counterweight seat 212 are provided with a second guide groove 28 on the opposite side wall. A support rod 25 is slidably arranged in the second guide groove 28. The two support rods 25 are fixedly connected to the opposite side walls of the two first sliders 23. A baffle 29 is fixedly connected to the end of each support rod 25.

[0022] The second upright plate 26 has an arc-shaped guide groove 210 on its side wall. The midpoint of the arc-shaped guide groove 210 coincides with the rotational connection axis between the swing rod 27 and the second upright plate 26. The second slider 211 is slidably arranged in the arc-shaped guide groove 210. The two second sliders 211 are respectively rotatably installed at the ends of the two swing rods 27 opposite to the second guide groove 28.

[0023] The damping assembly 3 includes two No. 3 upright plates 31 fixed on the base plate 1. Multiple support shafts 32 are rotatably installed on the inner side of the two No. 3 upright plates 31 in a U-shape. The central axis of the winding shaft 13 is rotatably fitted into the U-shaped opening of the multiple support shafts 32 arranged in a U-shape on both sides. The rotation center axis of one of the support shafts 32 is fixed to a transmission shaft 33, and the rotating disk 34 is fixed to the end of the transmission shaft 33. The outer cylinder 38 is fixed to the side wall of the No. 3 upright plate 31.

[0024] The damping assembly 3 also includes a motor 310 fixed on the base plate 1. A magnetic coupling 39 is fixedly connected to the end of the motor 310. Two parallel guide shafts 11 are rotatably installed on the base plate 1 on the side opposite to the second guide shaft 12 of the adjustment assembly 2. The rotational connection shaft of the first guide shaft 11 is a damping shaft.

[0025] Both ends of the magnetic coupling 39 are rotatably mounted on the base plate 1, and the other end of the magnetic coupling 39 is connected to the rotation center shaft of the rotating disk 34 via a belt and a transmission wheel.

[0026] During operation, existing fabric winding tension control devices use sensor structures for detection and adjustment. The application of sensors and drive mechanisms increases maintenance costs, thereby increasing production costs. Furthermore, they cannot limit the rotation speed of the winding roller. During the winding process, the tension fluctuation of the fabric on the winding roller increases with the increase of the winding diameter, resulting in the initial tension of the fabric being less than the tension of the later winding section. This leads to the fabric being in an unstable tension state during the winding process. In this solution, multiple springs 37 are in a contracted state in the initial state, and the friction block 36 is pulled back and retracted into the opening of the mounting groove 35 under the contraction action of the springs 37. In operation, the fabric is first passed between two guide shafts 11, then wound over the pressure shaft 24, and finally passed between two guide shafts 12 and fixed to the take-up shaft 13. The weight of the counterweight 213 can be adjusted according to the fabric material to accommodate different tension requirements. When the equipment is running, the fabric is conveyed from the guide shaft 11 to the take-up shaft 13 under the action of winding. The ends of the two swing rods 27, where the pressure shaft 24 is mounted, will flip upward under the gravity of the counterweight 213 at their other ends. This causes the pressure shaft 24 to lift the fabric passing over it, thereby pushing the guide shaft 12... The fabric between guide shafts 1 and 2 is supported and kept taut. When the tension of the knitted fabric decreases, the counterweight 213 pulls the two swing rods 27 to rotate around the axis, causing the pressure shaft 24 to move upward, increasing the stretch length of the fabric and thus increasing the tension. When the tension is too high, the tension of the fabric pushes the pressure shaft 24 downward, while the swing rods 27 compress the gravity of the counterweight 213, achieving tension buffering. The fabric tension can be controlled and adjusted by increasing or decreasing the number of counterweights 213. Compared with traditional fabric tension control devices, the structure is simpler and maintenance costs are effectively reduced. By controlling the operation of motor 310, when motor 310 is running, it drives the rotating disk 34 to rotate through magnetic coupling 39 and the transmission wheel and belt connected to it. At the beginning of winding, the speed is low, and friction block 36 is close to the axis under the tension of spring 37. The damping force is small, which avoids the initial winding tension of the fabric on the take-up shaft 13 being too large. As the winding speed increases, friction block 36 expands outward under the action of centrifugal force and comes into contact with the inner wall of outer cylinder 38 to generate friction force, which increases the rotational resistance of transmission shaft 33, thereby suppressing the rotational speed of take-up shaft 13 and preventing the fabric winding tension from dropping due to excessive speed. When the roll diameter increases and the speed tends to decrease, the centrifugal force decreases, spring 37 pulls friction block 36 to reset, the damping force decreases, and the tension is maintained to keep the tension stable, thereby ensuring that the tension of the fabric is constant during winding and avoiding the sudden drop in tension due to excessive speed. Conversely, when the speed decreases, the damping force decreases, preventing the fabric from breaking due to excessive tension and ensuring the quality of fabric winding. This effectively controls the tension of the fabric winding, reducing the maintenance cost of the fabric winding tension control device and ensuring constant tension during fabric winding, thereby guaranteeing the quality of fabric winding.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for controlling the winding tension of knitted fabric, characterized in that: Includes a base plate (1), on which an adjustment component (2) and a damping component (3) are provided. Two parallel guide shafts (12) are rotatably installed between the adjustment component (2) and the damping component (3) on the base plate (1). A winding shaft (13) is internally connected to the damping component (3). The adjustment assembly (2) has two swing rods (27) rotatably arranged inside. The two swing rods (27) are rotatably arranged between the ends of the damping assembly (3) opposite to the ends of the two swing rods (27) and the pressure shaft (24). The outer sides of the ends of the two swing rods (27) opposite to the pressure shaft (24) are rotatably mounted with counterweight seats (212). The counterweight seats (212) are fixed with counterweight blocks (213) by pins. The damping assembly (3) is provided with a rotating disk (34), and the rotation center axis of the rotating disk (34) is connected to one end of the winding shaft (13). The rotating disk (34) has evenly distributed mounting grooves (35) on its side. Springs (37) are fixed in each mounting groove (35). Friction blocks (36) are slidably arranged in the opening of each mounting groove (35). The friction blocks (36) are respectively fixedly connected to the ends of multiple springs (37). An outer cylinder (38) is provided on the outside of the rotating disk (34), and the rotation trajectory of multiple friction blocks (36) intersects with the inner wall of the outer cylinder (38).

2. The knitted fabric winding tension control device according to claim 1, characterized in that: The adjustment assembly (2) includes two first upright plates (21) and two second upright plates (26) fixed on the base plate (1). The two swing rods (27) are respectively rotatably installed on the opposite side walls of the two second upright plates (26). The first upright plates (21) are all located on the side opposite to the swing rods (27) and the counterweight (212). The first upright plates (21) have a first guide groove (22) on their side. A first slider (23) is slidably installed in the first guide groove (22). The pressure shaft (24) is rotatably installed between the two first sliders (23).

3. The knitted fabric winding tension control device according to claim 1, characterized in that: The swing rod (27) and the counterweight seat (212) are provided with a second guide groove (28) on the opposite side wall. A support rod (25) is slidably arranged in the second guide groove (28). The two support rods (25) are fixedly connected to the opposite side walls of the two first sliders (23). The end of the support rod (25) is fixedly connected to a baffle (29).

4. The knitted fabric winding tension control device according to claim 2, characterized in that: The side wall of the second upright plate (26) is provided with an arc-shaped guide groove (210), and the midpoint of the arc-shaped guide groove (210) coincides with the rotational connection axis of the swing rod (27) and the second upright plate (26). The arc-shaped guide groove (210) is provided with a second slider (211), and the two second sliders (211) are respectively rotatably installed at the ends of the two swing rods (27) opposite to the second guide groove (28).

5. The knitted fabric winding tension control device according to claim 1, characterized in that: The damping assembly (3) includes two No. 3 upright plates (31) fixed on the base plate (1). Multiple support shafts (32) are rotatably installed in a U-shape on the inner side of the two No. 3 upright plates (31). The central axis of the winding shaft (13) is rotatably fitted into the U-shaped opening of the multiple support shafts (32) arranged in a U-shape on both sides. The rotation center axis of one of the support shafts (32) is fixed to a transmission shaft (33). The rotating disk (34) is fixed to the end of the transmission shaft (33). The outer cylinder (38) is fixed to the side wall of the No. 3 upright plate (31).

6. The knitted fabric winding tension control device according to claim 1, characterized in that: The damping assembly (3) also includes a motor (310) fixed on the base plate (1). The end of the motor (310) is fixed with a magnetic coupling (39). Two parallel guide shafts (11) are rotatably installed on the base plate (1) on the side opposite to the second guide shaft (12) of the adjustment assembly (2). The rotational connection shaft of the first guide shaft (11) is a damping shaft.

7. The knitted fabric winding tension control device according to claim 6, characterized in that: Both ends of the magnetic coupling (39) are rotatably mounted on the base plate (1), and the other end of the magnetic coupling (39) is connected to the rotation center shaft of the rotating disk (34) via a belt and a drive wheel.

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