Fabric tensioning mechanism

Abstract

The application discloses a fabric tensioning mechanism, which comprises a rotating roller, a plurality of arc-shaped blocks, mounting columns fixedly connected to two ends of the rotating roller, first elastic members mounted on the mounting columns, and an adjusting mechanism for adjusting the elastic force of the first elastic members, the two ends of each arc-shaped block are slidably connected to the mounting columns, the plurality of arc-shaped blocks are enclosed to form a circular surface, and the first elastic members are located between the rotating roller and the arc-shaped blocks. The circular surface formed by the arc-shaped blocks is in contact with the fabric, the arc-shaped blocks are tightly abutted by the elastic action of the first elastic members, and the vibration resistance is significantly improved. When the fabric vibrates during transportation, the arc-shaped blocks can dynamically adjust positions under the elastic action, fabric separation or relaxation caused by vibration is avoided, and the tensioning stability is ensured.

Description

Technical Field

[0001] This application relates to the technical field of fabric transportation, and in particular to a fabric tensioning mechanism. Background Technology

[0002] In the fabric transportation and processing of the textile industry, the stability of the tensioning device directly affects the fabric quality and production efficiency. Existing tensioning devices typically use a single, real-time adjustable tension roller. Sensors detect tension and dynamically adjust the roller's position or pressure to maintain constant fabric tension. However, this structure has significant drawbacks in practical applications: it has weak anti-interference capabilities, especially when there is vibration in the transportation or production environment. The contact effect between the fabric and the tension roller decreases significantly, leading to tension fluctuations or even failure.

[0003] Specifically, vibration can cause momentary separation or slippage between the fabric and the tension roller, preventing the tension control system from responding accurately and thus affecting the stability of subsequent processes such as winding, cutting, or dyeing. Furthermore, traditional tension roller adjustment mechanisms are mostly rigid structures lacking cushioning capabilities, making them ill-suited for adapting to the tension compensation requirements under dynamic conditions. Therefore, there is an urgent need for a fabric tensioning mechanism with strong vibration resistance and adaptive adjustment capabilities to ensure that the fabric maintains a uniform and stable tension under complex conditions, thereby improving production quality and equipment reliability. Utility Model Content

[0004] The purpose of this application is to provide a fabric tensioning mechanism to improve the vibration resistance of the tensioning device during fabric transportation.

[0005] The fabric tensioning mechanism provided in this application adopts the following technical solution: it includes a rotating roller, several arc-shaped blocks, mounting columns fixedly connected to both ends of the rotating roller, a first elastic element mounted on the mounting columns, and an adjustment mechanism for adjusting the elastic force of the first elastic element. The two ends of the arc-shaped blocks are respectively slidably connected to the mounting columns, and the several arc-shaped blocks form a circular surface. The first elastic element is located between the rotating roller and the arc-shaped blocks.

[0006] By adopting the above technical solution, several arc-shaped blocks form a circular surface. When fabric passes over the circular surface, the arc-shaped blocks in contact with the fabric are subjected to different external forces, causing the formed circular surface to deform. At this time, the arc-shaped blocks maintain tight contact under the action of the first elastic element. When vibration occurs, the first elastic element can make the arc-shaped blocks effectively contact each other, thus preventing the fabric from separating from the arc-shaped blocks due to vibration. Moreover, the elasticity of the first elastic element can be adjusted by the adjustment mechanism.

[0007] Preferably, the arc-shaped block has a first zone inside, the area between the arc-shaped block and the rotating roller is a second zone, the mounting column extends into the first zone, and a limit nut is installed at the top of the mounting column.

[0008] By adopting the above technical solution, the limiting nut can effectively prevent the arc-shaped block from detaching from the mounting post, and hide the connecting parts inside the arc-shaped block. This improves the aesthetics on the one hand, and prevents exposed parts from affecting the fabric on the other.

[0009] Preferably, the adjustment mechanism includes an adjustment plate, a connecting plate installed at the end of the mounting column, and an adjustment rod rotatably connected to the connecting plate. The adjustment plate is slidably connected to the mounting columns at both ends. The adjustment plate is located between the rotating roller and the arc-shaped block. One end of the first elastic element abuts against the arc-shaped block, and the other end abuts against the adjustment plate. The adjustment rod is threadedly connected to the adjustment plate.

[0010] By adopting the above technical solution, when the adjusting rod is rotated, the adjusting rod is threadedly connected to the adjusting plate, and one end of the adjusting plate is restricted by the mounting post. This allows the adjusting plate to move, compressing the first elastic element and thus adjusting the elastic force of the first elastic element. The limiting nut rigidly connects the connecting plate to the mounting post, and the connecting plate provides stable support for the adjusting rod.

[0011] Preferably, the arc-shaped block is provided with a plurality of clearance holes, the axis of which coincides with the axis of the mounting column / adjusting rod, and the clearance holes are directly larger than the mounting and adjusting rod.

[0012] By adopting the above technical solution, tools can be used to operate the limit nut and the adjusting rod through the clearance hole.

[0013] Preferably, the top of the mounting column is provided with a stepped portion and a limiting portion, and the connecting plate is provided with a mounting portion that mates with the limiting portion.

[0014] By adopting the above technical solution, the limiting part and the mounting part are matched to restrict the rotation of the connecting plate, so that the connecting plate can stably support the adjusting shaft.

[0015] Preferably, both ends of the adjusting rod are equipped with limiting platforms, and the adjusting rod is provided with a second elastic element. The two ends of the second elastic element abut against the adjusting plate and the connecting plate respectively. The second elastic plate forces the adjusting plate to move downward, and the elastic force of the second elastic element is greater than that of the first elastic element.

[0016] By adopting the above technical solution, the first elastic element and the second elastic element constitute an elastic system. The elastic force of the second elastic element is greater than that of the first elastic element. The second elastic element mainly serves as a support, so that the adjusting plate and the arc block maintain a relatively large distance. When the adjusting rod is rotated, the distance between the adjusting plate and the connecting plate changes. When the adjusting rod is stopped, the second elastic element can maintain the stability between the adjusting plate and the connecting plate. The movement of the adjusting plate causes the elasticity of the first elastic element to change, so that the arc block has different preload.

[0017] Preferably, the surface of the mounting post is engraved with data markings.

[0018] By adopting the above technical solution, rotating the adjusting rod can cause the adjusting plate to move, and the data markings on the mounting column can clearly indicate the position of the adjusting plate, so that the user can clearly know the magnitude of the adjusting force.

[0019] Preferably, the adjusting plate is provided with a deformation section.

[0020] By adopting the above technical solution, the deformation part can effectively alleviate the adjustment error at both ends. When there is an error at both ends of the adjustment plate, the deformation part deforms to adapt to the error at both ends of the adjustment plate.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The fabric tensioning mechanism of this application uses a circular surface formed by arc-shaped blocks to contact the fabric. The elasticity of the first elastic element ensures a tight fit between the arc-shaped blocks and the fabric, significantly improving vibration resistance. When vibration occurs during fabric transport, the arc-shaped blocks can dynamically adjust their position under elastic action, preventing fabric detachment or loosening due to vibration and ensuring tension stability. Furthermore, the adjustment mechanism, through the cooperation of a threaded rod and an adjustment plate, can precisely control the preload of the first elastic element, adapting to different fabric tension requirements and enhancing versatility. The concealed design inside the arc-shaped blocks protects the connecting components and prevents wear on the fabric, balancing functionality and safety. The data markings on the mounting column further simplify the adjustment process, allowing operators to quickly adjust and quantify the tension, improving production efficiency.

[0023] 2. The dual elastic system of this mechanism works synergistically to further optimize vibration resistance. The second elastic element provides the main support force, ensuring a stable distance between the adjusting plate and the arc-shaped block, while the first elastic element dynamically responds to fabric pressure, forming a buffer. When the adjusting rod rotates, the second elastic element absorbs adjustment errors, maintaining system balance. The design of the deformation section further alleviates the problem of asynchronous adjustment at both ends, improving the reliability of the mechanism. The cooperation between the stepped section and the limiting section prevents the connecting plate from rotating, ensuring the stability of the force applied by the adjusting rod. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0025] Figure 2 This application Figure 1 Schematic diagram of the structure in the A direction;

[0026] Figure 3 This is a schematic diagram of the overall structure of the adjustment mechanism in Embodiment 1 of this application;

[0027] Figure 4This is a schematic diagram of the overall structure of the mounting column in Embodiment 1 of this application;

[0028] Figure 5 This is a schematic diagram of the overall structure of the adjusting rod in Embodiment 1 of this application;

[0029] Figure 6 This is a schematic diagram of the overall structure of the adjustment plate in Embodiment 1 of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Rotating roller; 2. Arc-shaped block; 21. Clearance hole; 3. First elastic element; 4. Adjusting mechanism; 41. Adjusting plate; 411. Deformation part; 42. Connecting plate; 421. Mounting part; 43. Adjusting rod; 431. First connecting part; 432. Limiting platform; 433. Second connecting part; 434. Threaded hole; 435. Stepped hole; 44. Second elastic element; 5. Mounting column; 51. Limiting part; 52. Stepped part; 53. Limiting nut. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail.

[0032] This application discloses a fabric tensioning mechanism.

[0033] Example 1, referring to Figure 1 and Figure 2 A fabric tensioning mechanism includes a rotating roller 1, 12 arc-shaped blocks 2, 12 sets of mounting groups installed on the rotating roller 1, 24 first elastic elements 3, and an adjusting mechanism 4 for adjusting the elasticity of the first elastic elements 3. Each mounting group includes two mounting columns 5. The two ends of the arc-shaped blocks 2 are slidably connected to the mounting columns 5 respectively. The first elastic elements 3 are disposed between the arc-shaped blocks 2 and the rotating roller 1. The first elastic elements 3 force the arc-shaped blocks 2 to move outward. In embodiment 1, the first elastic element 3 is a spring. Under the action of the first elastic elements 3, the outer surfaces of the 12 arc-shaped blocks form a circular surface. When the fabric wraps around the rotating roller 1 and abuts against the arc-shaped blocks 2, the fabric will apply an inward external force to the arc-shaped blocks 2, causing the formed circle to deform. The first elastic elements 3 will apply a tension force to the fabric. Since the fabric abuts against multiple arc-shaped blocks 2, when vibration occurs, each arc-shaped block 2 will make an appropriate adjustment under the action of the first elastic elements 3, so that the arc-shaped blocks 2 and the fabric are pressed tightly together.

[0034] refer to Figure 2 When the arc-shaped block 2 is at its highest point, the gravity of the arc-shaped block 2 is opposite to the direction of the elastic force of the first elastic element 3. In addition, the external force applied by the fabric will cause the arc-shaped block 2 to compress the first elastic element 3. As the lowest point rotates, the first elastic element 3 will push outward. The arc-shaped block 2 continuously applies tension to the fabric, and the tension applied to the fabric is a gradient change, which effectively prevents the sudden change of tension from affecting the fabric.

[0035] refer to Figure 3 and Figure 4 The adjustment mechanism 4 includes an adjustment plate 41, two plates mounted on the top of the mounting column 5, and an adjustment rod 43 rotatably connected to the connecting plate 42. The adjustment plate 41 is slidably connected to the mounting column 5 and is located between the rotating roller 1 and the arc-shaped block 2. One end of the first elastic member 3 abuts against the arc-shaped block 2, and the other end abuts against the adjustment plate 41. The adjustment rod 43 is threadedly connected to the adjustment plate 41. The arc-shaped block 2 has a first area inside, and the area between the arc-shaped block 2 and the rotating roller 1 is a second area. The mounting column 5 extends into the first area. The top of the mounting column 5 is provided with a stepped part 52 and a limiting part 51. The connecting plate 42 is provided with a mounting part 421 that mates with the limiting part 51. The limiting part 51 and the mounting part 421 restrict the rotation of the connecting plate 42 relative to the mounting column 5. In embodiment 1, the limiting part 51 and the mounting part 421 are elliptical cylindrical in shape. One side of the connecting plate 42 abuts against the stepped part 52, and the other side abuts against the limiting nut 53, so that the connecting plate 42 is rigidly connected to the mounting column 5, providing stable support for the adjusting rod 43.

[0036] refer to Figure 5 The mounting rod is connected to a limiting platform 432 by threads at both ends. The mounting rod is provided with a first connecting part 431 at both ends. The limiting platform 432 is provided with a second connecting part 433 that mates with the first connecting part 431. In embodiment 1, the first connecting part 431 and the second connecting part 433 are hexagonal prisms. The limiting platform 432 is provided with a stepped hole 435. The first connecting part 431 is provided with a threaded hole 434. The stepped hole 435 and the threaded hole 434 are connected by bolts.

[0037] refer to Figure 3 Both ends of the adjusting rod 43 are equipped with limiting platforms 432. In embodiment 1, the limiting platforms 432 are fixedly connected to the mounting column 5 by bolt connection. The adjusting rod 43 is provided with a second elastic element 44. In embodiment 1, the second elastic element 44 is a spring. The two ends of the second elastic element 44 abut against the adjusting plate 41 and the connecting plate 42 respectively. The second elastic plate forces the adjusting plate 41 to move downward. The elastic force of the second elastic element 44 is greater than that of the first elastic element 3. When the adjusting rod 43 is rotated, since the adjusting rod 43 is threadedly connected to the adjusting plate 41 and the adjusting plate 41 is slidably connected to the mounting column 5, the adjusting plate 41 moves along the direction of the mounting column 5.

[0038] Both the first elastic element 3 and the second elastic element 44 are compressed. The compression of the first elastic element 3 increases the external force required to drive the arc plate to move, raising the preload pressure range to the lower limit. The compression of the second elastic element 44 makes it difficult for the connecting plate 42 and the adjusting plate 41 to move. On the one hand, it provides stable support, and on the other hand, it increases the friction of the adjusting shaft rotation, provides feedback, and prevents the adjusting rod 43 from rotating due to external force.

[0039] refer to Figure 3 The arc-shaped block 2 has several clearance holes 21. The axis of the clearance holes 21 coincides with the axis of the mounting post 5 / adjusting rod 43. The clearance holes 21 are directly larger than the mounting post 5 / adjusting rod 43. The surface of the mounting post 5 is engraved with data markings. Since the adjusting rod 43 is located on both sides, when adjusting the position of the adjusting plate 41, a tool needs to be inserted through the clearance holes 21 to rotate the adjusting rod 43. The magnitude of the preload can provide feedback by providing the corresponding reading of the adjusting plate 41, so that the preload on both sides of the adjusting plate 41 is similar.

[0040] refer to Figure 3 and Figure 6 In order to minimize the impact of errors on both sides of the adjustment plate 41, the adjustment plate 41 is provided with a deformation part 411. In embodiment 1, the deformation part 411 is made of a flexible material, such as rubber, resin, silicone, etc. When the adjustment rod 43 on one side is adjusted, the position of the adjustment plate 41 changes, causing the deformation part 411 to deform, thereby offsetting the external force caused by the different positions of the adjustment plates 41 on both sides.

[0041] The implementation principle of the fabric tensioning mechanism in this application embodiment is as follows: 12 circumferentially distributed arc-shaped blocks 2 of the rotating roller 1 expand outward under the action of springs to form an initial circular surface. When the fabric is wrapped, each arc-shaped block 2 floats independently to adapt to the fabric pressure, forming a first-level dynamic balance. During rotation, the arc-shaped blocks 2 are subjected to the vector superposition of gravity and spring force, generating a gradient-changing tension force to avoid sudden stress changes. The adjustment mechanism 4 uses a bidirectional threaded rod to drive the adjustment plate 41 to change the spring compression, which, together with a strong spring, maintains system stability and provides operational damping. The scale of the mounting column 5 and the clearance hole 21 are designed to achieve precise calibration. The flexible deformation part 411 automatically absorbs the adjustment deviation, forming an error compensation mechanism, so that the system establishes a multi-level balance between fabric pressure, spring reaction force, and the force of the adjustment mechanism 4, ensuring that the fabric always maintains a uniform and stable tension state during processing.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fabric tensioning mechanism, characterized by: The device includes a rotating roller (1), several arc-shaped blocks (2), mounting columns (5) fixedly connected to both ends of the rotating roller (1), a first elastic element (3) mounted on the mounting columns (5), and an adjustment mechanism (4) for adjusting the elastic force of the first elastic element (3). The two ends of the arc-shaped blocks (2) are slidably connected to the mounting columns (5), and the several arc-shaped blocks (2) form a circular surface. The first elastic element (3) is located between the rotating roller (1) and the arc-shaped blocks (2).

2. The fabric tensioning mechanism of claim 1, wherein: The arc-shaped block (2) has a first zone inside, and the arc-shaped block (2) and the rotating roller (1) are in a second zone. The mounting column (5) extends into the first zone, and a limit nut (53) is installed at the top of the mounting column (5).

3. The fabric tensioning mechanism according to claim 2, characterized in that: The adjustment mechanism (4) includes an adjustment plate (41), a connecting plate (42) installed at the end of the mounting column (5), and an adjustment rod (43) rotatably connected to the connecting plate (42). The adjustment plate (41) is slidably connected to the mounting columns (5) at both ends. The adjustment plate (41) is located between the rotating roller (1) and the arc block (2). One end of the first elastic element (3) abuts against the arc block (2), and the other end abuts against the adjustment plate (41). The adjustment rod (43) is threadedly connected to the adjustment plate (41).

4. The fabric tensioning mechanism according to claim 3, characterized in that: The arc-shaped block (2) is provided with several clearance holes (21). The axis of the clearance hole (21) coincides with the axis of the mounting column (5) / adjusting rod (43). The clearance hole (21) is directly larger than the mounting and adjusting rod (43).

5. The fabric tensioning mechanism according to claim 4, characterized in that: The top of the mounting column (5) is provided with a stepped part (52) and a limiting part (51), and the connecting plate (42) is provided with a mounting part (421) that mates with the limiting part (51).

6. The fabric tensioning mechanism according to claim 5, characterized in that: The adjusting rod (43) has a limit platform (432) installed at both ends. The adjusting rod (43) is provided with a second elastic element (44). The two ends of the second elastic element (44) abut against the adjusting plate (41) and the connecting plate (42) respectively. The second elastic plate forces the adjusting plate (41) to move downward. The elastic force of the second elastic element (44) is greater than that of the first elastic element (3).

7. The fabric tensioning mechanism according to claim 6, characterized in that: The mounting post (5) has data markings engraved on its surface.

8. The fabric tensioning mechanism according to claim 7, characterized in that: The adjusting plate (41) is provided with a deformation part (411).

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