A tension regulating device for the production of flame-retardant needle-punched fabric

Abstract

This utility model relates to the technical field of tension adjustment devices, specifically a tension adjustment device for the production of flame-retardant needle-punched fabric. Its purpose is to solve the problem that existing tension rollers require height adjustment when guiding needle-punched fabrics of different specifications. However, the adjustment of the tension roller is cumbersome and time-consuming, achieved by raising and lowering screws on a bracket. Therefore, this new device improves the efficiency and effectiveness of the tension adjustment, thus enhancing its practicality. The device includes a tension roller, a rotating shaft, and fixed plates. The rotating shaft is fixedly mounted to the tension roller, and both sides of the rotating shaft are rotatably connected to corresponding fixed plates. The tension roller is guided and pressed by the flame-retardant needle-punched fabric. A pre-tightening mechanism is provided at the bottom of the two sets of fixed plates. The pre-tightening mechanism also includes a sliding block, a lifting plate, a limiting plate, and a spring. A groove is provided at the top of the lifting plate, and a working cavity is provided at the bottom of the groove.

Description

Technical Field

[0001] This utility model relates to the technical field of tension adjustment devices, specifically a tension adjustment device for the production of flame-retardant needle-punched fabric. Background Technology

[0002] In the production process of flame-retardant needle-punched fabric, the stability of tension plays a crucial role in product quality. If the tension is too high, it can easily lead to overstretching of the fabric, resulting in tearing or a decrease in strength; while if the tension is too low, the fabric will become loose, affecting the uniformity of needle punching and the smoothness of the fabric surface.

[0003] Currently, existing tension adjustment devices on the market have some shortcomings when adjusting the tension of flame-retardant needle-punched fabric. Existing tension rollers require height adjustment when guiding needle-punched fabrics of different specifications. However, the adjustment of the tension rollers involves raising and lowering the height on a bracket by removing and installing screws. This method is cumbersome, time-consuming, and prone to thread wear due to repeated screw removal and installation during frequent adjustments, further affecting the stability and accuracy of the adjustment. This causes numerous inconveniences in production, severely restricts the improvement of production efficiency, and consequently affects the production quality and efficiency of flame-retardant needle-punched fabric, resulting in poor practicality. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a tension adjustment device for the production of flame-retardant needle-punched fabric. The purpose is to solve the problem that existing tension rollers require height adjustment when guiding needle-punched fabrics of different specifications. However, the adjustment of the tension rollers involves raising and lowering the height on a bracket by removing and installing screws, a method that is cumbersome and time-consuming. Therefore, this invention enhances the efficiency and effectiveness of the tension adjustment device, thus improving its practicality in the production of flame-retardant needle-punched fabric.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tension adjustment device for the production of flame-retardant needle-punched fabric, comprising a tension roller, a rotating shaft, and a fixing plate. The rotating shaft is fixedly fitted with the tension roller, and the two sides of the rotating shaft are rotatably connected to the corresponding fixing plates. The tension roller is guided and pressed by the flame-retardant needle-punched fabric, and a pre-tightening mechanism is provided at the bottom of the two sets of fixing plates.

[0008] The pre-tensioning mechanism also includes a sliding block, a lifting plate, a limiting plate, and springs. The top of the lifting plate is provided with a sliding groove, and the bottom of the sliding groove is provided with a working cavity. The bottom ends of the two sets of fixed plates are fixedly connected to the top ends of the corresponding sliding blocks. The bottom ends of the sliding blocks are slidably fitted with the corresponding sliding grooves. The bottom ends of the sliding blocks are fixedly connected to the top ends of the corresponding limiting plates. The limiting plates are located inside the working cavity and are slidably connected to the inner wall of the working cavity. The bottom ends of the multiple sets of springs are installed at the bottom end of the working cavity, and the top ends of the multiple sets of springs are connected to the bottom ends of the limiting plates. The springs are compressed by the limiting plates. A lifting mechanism is provided on the outside of the lifting plate.

[0009] Furthermore, to facilitate height adjustment of the tension roller, the present invention includes the following improvements: the lifting mechanism further includes a base, a support plate, and electric push rods. The support plate is symmetrically installed on the top of the base, the mounting ends of the two sets of electric push rods are installed on the top of the base, the output ends of the two sets of electric push rods are connected to the bottom end of the corresponding lifting plate, and the two sides of the lifting plate are connected to the support plate through a guide mechanism.

[0010] Furthermore, to facilitate the sliding of the lifting plate, the present invention includes the following improvements: the guiding mechanism further includes a guide plate, a guide rod, and a connecting plate. A first groove is provided in the support plate, and multiple sets of connecting plates are symmetrically installed on the outside of the first groove. The guide rod is fixedly connected to the corresponding connecting plate on both sides. The multiple sets of guide plates pass through the first groove and are fixedly connected to the corresponding lifting plate on both sides. The guide plate and the corresponding guide rod are slidably fitted together.

[0011] Furthermore, to facilitate the installation stability of the support plate, the present invention includes the following improvements: it also includes stiffening plates, and multiple sets of stiffening plates are provided at the connection between the support plate and the base.

[0012] Furthermore, in order to facilitate the limiting of the sliding block, the present invention includes the following improvements: it also includes a stop block, and multiple sets of stop blocks are provided on both sides of the sliding block.

[0013] Furthermore, it also includes a protective rubber pad, with the bottom end of the stop block connected to the protective rubber pad.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a tension adjustment device for the production of flame-retardant needle-punched fabric, which has the following advantages:

[0016] Improved ease of adjustment and efficiency: The lifting mechanism driven by an electric push rod replaces the traditional screw disassembly and adjustment method, realizing the automated adjustment of the tension roller height. It eliminates the need for repeated manual disassembly and assembly of screws, greatly simplifies the operation process, saves a lot of adjustment time, and effectively improves production efficiency. It is especially suitable for production scenarios where different specifications of flame-retardant needle-punched fabric are frequently changed.

[0017] Improved adjustment accuracy and stability: The lifting mechanism, in conjunction with the guide mechanism (guide plate, guide rod), ensures that the lifting plate remains stable during lifting, avoiding deviation or swaying, and ensuring the accuracy of tension roller height adjustment; at the same time, it eliminates the problem of decreased accuracy due to thread wear in screw adjustment, ensuring the stability of adjustment during long-term use.

[0018] Enhanced tension stability: The spring in the pre-tensioning mechanism can generate a continuous pre-tensioning force on the tension roller. When the tension of the flame-retardant needle-punched fabric fluctuates slightly, the spring drives the sliding block and the limiting plate to slide slightly in the groove and working cavity through its own elastic deformation, thereby achieving dynamic compensation for tension, reducing damage to the fabric surface caused by sudden tension changes, and helping to ensure product quality.

[0019] Improving structural reliability and service life: The stiffening plates enhance the structural strength of the connection between the support plate and the base, improving the overall load-bearing capacity of the device; the combination of the stop block and the protective rubber pad not only limits the sliding range of the sliding block to prevent excessive sliding from causing damage to the components, but also reduces wear caused by collisions, extending the service life of the device. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a tension adjustment device for the production of flame-retardant needle-punched fabric according to this utility model.

[0021] Figure 2 This is a structural schematic diagram of the main view of a tension adjustment device for the production of flame-retardant needle-punched fabric according to this utility model.

[0022] Figure 3 This is a schematic diagram of the right view of a tension adjustment device for producing flame-retardant needle-punched fabric according to this utility model.

[0023] Figure 4 This is a schematic diagram of the internal structure of the lifting plate of a tension adjustment device for the production of flame-retardant needle-punched fabric according to this utility model.

[0024] In the diagram: 1. Tension roller; 2. Rotating shaft; 3. Fixed plate; 4. Sliding block; 5. Lifting plate; 6. Limiting plate; 7. Spring; 8. Slide groove; 9. Working chamber; 10. Base; 11. Support plate; 12. Electric push rod; 13. Guide plate; 14. Guide rod; 15. Connecting plate; 16. First groove; 17. Rib plate; 18. Stop block; 19. Protective rubber pad. Detailed Implementation

[0025] 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 protection scope of the present utility model.

[0026] Please see Figure 1-4 A tension adjustment device for the production of flame-retardant needle-punched fabric includes a tension roller 1, a rotating shaft 2, and a fixing plate 3. The rotating shaft 2 is fixedly mounted on the tension roller 1. The two sides of the rotating shaft 2 are rotatably connected to the corresponding fixing plates 3. The tension roller 1 is guided and pressed by the flame-retardant needle-punched fabric. The bottom ends of the two sets of fixing plates 3 are provided with a pre-tightening mechanism.

[0027] The pre-tensioning mechanism also includes a sliding block 4, a lifting plate 5, a limiting plate 6, and springs 7. The top of the lifting plate 5 is provided with a sliding groove 8, and the bottom of the sliding groove 8 is provided with a working cavity 9. The bottom ends of the two sets of fixed plates 3 are fixedly connected to the top ends of the corresponding sliding blocks 4. The bottom ends of the sliding blocks 4 are slidably fitted with the corresponding sliding grooves 8. The bottom ends of the sliding blocks 4 are fixedly connected to the top ends of the corresponding limiting plates 6. The limiting plates 6 are located inside the working cavity 9 and are slidably connected to the inner wall of the working cavity 9. The bottom ends of the multiple sets of springs 7 are installed at the bottom end of the working cavity 9, and the top ends of the multiple sets of springs 7 are connected to the bottom ends of the limiting plates 6. The springs 7 are compressed by the limiting plates 6. A lifting mechanism is provided on the outside of the lifting plate 5.

[0028] It is worth noting that the electric push rod 12 used in this utility model is an existing device, and the control method and circuit connection method of the above-mentioned device are all existing technologies. Furthermore, this utility model provides power to the above-mentioned device by connecting an external power source through an electric wire.

[0029] When this device is in use

[0030] Initial preparation: Pass one end of the flame-retardant needle-punched fabric through each tension roller 1 in sequence, so that the fabric surface contacts the surface of the tension roller 1. At this time, in the pre-tightening mechanism, the spring 7 is in a natural or slightly compressed state. The initial pre-tightening force is applied to the fixing plate 3 and the tension roller 1 through the limiting plate 6 and the sliding block 4 to ensure that there is an appropriate fit between the fabric surface and the tension roller 1.

[0031] Normal production operation: The flame-retardant needle-punched fabric begins to be conveyed under the action of the external traction device. During the conveying process, the tension roller 1 rotates through the rotating shaft 2 as the fabric surface moves. When the fabric tension changes slightly, the tension change is transmitted to the tension roller 1, which in turn pushes the fixed plate 3 to drive the sliding block 4 to slide in the slide groove 8 of the lifting plate 5. The sliding block 4 drives the limiting plate 6 to move in the working chamber 9, causing the spring 7 to be further compressed or stretched. The elastic force of the spring 7 will act in the opposite direction on the limiting plate 6, the sliding block 4 and the fixed plate 3, to buffer and compensate for the tension change and maintain the relative stability of the fabric tension.

[0032] Height Adjustment Operation: When it is necessary to change to different specifications of flame-retardant needle-punched fabric and adjust the height of tension roller 1, activate the electric push rod 12 in the lifting mechanism. The output end of the electric push rod 12 extends and retracts, causing the lifting plate 5 to rise or fall. The guide plates 13 on both sides of the lifting plate 5 slide along the guide rod 14 in the first groove 16 of the support plate 11, ensuring the smooth movement of the lifting plate 5. The movement of the lifting plate 5 drives the tension roller 1 to rise and fall synchronously through the sliding block 4 and the fixed plate 3 in the pre-tightening mechanism until the required height is reached. Then, close the electric push rod 12 to complete the height adjustment.

[0033] Limit protection: When the sliding block 4 slides along the slide groove 8, when the sliding block 4 moves to the limit position, the stop blocks 18 on both sides will contact the inner wall of the slide groove 8, restricting the sliding block 4 from continuing to move, protecting components such as the spring 7 from excessive stretching or compression damage. At the same time, the protective rubber pad 19 can reduce the impact force when the stop block 18 collides with the inner wall of the slide groove 8, reducing wear.

[0034] In actual use, it was found that it was inconvenient to adjust the height of the tension roller 1. To solve the above problem, in this embodiment, the lifting mechanism also includes a base 10, a support plate 11 and an electric push rod 12. The support plate 11 is symmetrically installed on the top of the base 10. The mounting ends of the two sets of electric push rods 12 are installed on the top of the base 10. The output ends of the two sets of electric push rods 12 are connected to the bottom of the corresponding lifting plate 5. The two sides of the lifting plate 5 are connected to the support plate 11 through a guide mechanism.

[0035] In actual use, it was found that it was not convenient to guide the sliding of the lifting plate 5. In order to solve the above problem, in this embodiment, the guiding mechanism also includes a guide plate 13, a guide rod 14 and a connecting plate 15. The support plate 11 is provided with a first groove 16. The multiple sets of connecting plates 15 are symmetrically installed on the outside of the first groove 16. The two sides of the guide rod 14 are fixedly connected to the corresponding connecting plate 15. The multiple sets of guide plates 13 pass through the first groove 16 and are fixedly connected to the two sides of the corresponding lifting plate 5. The guide plate 13 and the corresponding guide rod 14 are slidably fitted together.

[0036] In actual use, it was found that the installation stability of the support plate 11 was not convenient. In order to solve the above problem, this embodiment also includes stiffeners 17, and multiple sets of stiffeners 17 are provided at the connection between the support plate 11 and the base 10.

[0037] In actual use, it was found that it was not convenient to limit the sliding block 4. In order to solve the above problem, this embodiment also includes a stop block 18, and multiple sets of stop blocks 18 are provided on both sides of the sliding block 4.

[0038] As a preferred embodiment of the above, a protective rubber pad 19 is also included, and the bottom end of the stop block 18 is connected to the protective rubber pad 19.

[0039] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0040] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0041] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tension adjustment device for the production of flame-retardant needle-punched fabric, comprising a tension roller (1), a rotating shaft (2) and a fixing plate (3), wherein the rotating shaft (2) is fixedly mounted on the tension roller (1), and the two sides of the rotating shaft (2) are rotatably connected to the corresponding fixing plates (3), the tension roller (1) is guided and pressed by the flame-retardant needle-punched fabric, and the bottom ends of the two sets of fixing plates (3) are provided with a pre-tightening mechanism; Its features are: The pre-tightening mechanism also includes a sliding block (4), a lifting plate (5), a limiting plate (6), and a spring (7). The top of the lifting plate (5) is provided with a groove (8), and the bottom of the groove (8) is provided with a working cavity (9). The bottom of the two sets of fixing plates (3) is fixedly connected to the top of the corresponding sliding block (4). The bottom of the sliding block (4) is slidably fitted with the corresponding groove (8). The bottom of the sliding block (4) is fixedly connected to the top of the corresponding limiting plate (6). The limiting plate (6) is located inside the working cavity (9). The limiting plate (6) is slidably connected to the inner wall of the working cavity (9). The bottom of the multiple sets of springs (7) is installed at the bottom of the working cavity (9). The top of the multiple sets of springs (7) is connected to the bottom of the limiting plate (6). The springs (7) are squeezed by the limiting plate (6). A lifting mechanism is provided on the outside of the lifting plate (5).

2. The tension adjusting device for producing flame-retardant needle-punched fabric according to claim 1, characterized in that: The lifting mechanism also includes a base (10), a support plate (11), and electric push rods (12). The support plate (11) is symmetrically installed on the top of the base (10). The two sets of electric push rods (12) are installed on the top of the base (10). The output ends of the two sets of electric push rods (12) are connected to the bottom of the corresponding lifting plate (5). The two sides of the lifting plate (5) are connected to the support plate (11) through a guide mechanism.

3. The tension adjusting device for producing flame-retardant needle-punched fabric according to claim 2, characterized in that: The guiding mechanism also includes a guide plate (13), a guide rod (14), and a connecting plate (15). The support plate (11) has a first groove (16). The multiple sets of connecting plates (15) are symmetrically installed on the outside of the first groove (16). The guide rod (14) is fixedly connected to the corresponding connecting plate (15) on both sides. The multiple sets of guide plates (13) pass through the first groove (16) and are fixedly connected to the corresponding lifting plate (5) on both sides. The guide plate (13) and the corresponding guide rod (14) are slidably fitted together.

4. The tension adjusting device for producing flame-retardant needle-punched fabric according to claim 3, characterized in that: It also includes stiffening plates (17), and multiple sets of stiffening plates (17) are provided at the connection between the support plate (11) and the base (10).

5. The tension adjusting device for producing flame-retardant needle-punched fabric according to claim 4, characterized in that: It also includes a stop block (18), and multiple sets of stop blocks (18) are provided on both sides of the sliding block (4).

6. The tension adjusting device for producing flame-retardant needle-punched fabric according to claim 5, characterized in that: It also includes a protective rubber pad (19), the bottom end of which is connected to the protective rubber pad (19).

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