Nonwoven constant tension supply device
Patent Information
- Application Number
- CN202522514116.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-11-27
AI Technical Summary
[0002]目前一次性卫生用品在人们日常生活中的使用率越来越高，因此一次性卫生用品的产量也在不断提高，目前大多数一次性卫生用品通常采用无纺布材料进行制作，在现有的生产工艺中，放布架上通常会悬挂两卷无纺布一备一用，而为了实现无纺布换卷时生产线高速生产的连续性以及保证无纺布的恒张力输出，通常需要在一次性卫生用品生产线中设置恒张力供料装置，以对无纺布进行适量物料缓存并实现无纺布的恒张力输出，然而，现有的恒张力供料装置大都采用驱动电机与传动皮带相结合的驱动方式，在高速生产中，传动皮带存在弹性变形和打滑风险，会影响响应速度，无法有效确保恒张力供料装置对无纺布材料输出的恒张力均匀稳定，无法通过控制电机对恒张力输出实现精准和快速控制，导致无纺布材料在换料会受到过量张力变形或者损坏，最终导致设备无法在高速状态下进行换接料处理，必须降速以进行换接料处理，会影响设备整体的生产效率
[0014]由上述描述可知，本实用新型提供的一种无纺布恒张力供料装置，具有如下有益效果：通过使得无纺布呈蛇形来回缠绕在两个恒张力移动机构之间，且通过直线驱动件的驱动，并在同步连动机构的连动作用下，可带动两个恒张力移动机构进行平稳同步反向移动，且配合滑动组件的设置，可有效确保恒张力移动机构移动时的平稳性及顺畅性，因此无纺布在正常放卷过程中，在直线驱动件的驱动下，随着两个恒张力移动机构的同步移动并相互远离，能够在二者之间形成物料缓存，而在两卷无纺布进行驳接换卷时以及换卷后的初始阶段，在直线驱动件的驱动下，随着两个恒张力移动机构的同步移动并相互靠近，能够确保在换卷过程中对后端设备进行持续稳定供料，以实现无纺布在换卷时生产线高速生产的连续性，且在整个无纺布供料过程中，通过实时位置记录组件的设置，能够对两个恒张力移动机构的实时位置进行记录，即实时记录两个恒张力移动机构之间的距离，从而反馈并实时控制直线驱动件的驱动距离，并形成闭环控制，以达到控制恒张力的目的，从而能很好的确保无纺布供料时的张力恒定，且通过采用直线驱动件、同步连动机构与实时位置记录组件的配合驱动方式，能够有效确保两个恒张力移动机构移动时的同步性，可实现对无纺布恒张力的精准快速响应控制，且该驱动方式结构简单、实用可靠，能够在高速状态下长时间确保稳定运行。
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Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of disposable hygiene product production equipment, specifically to a nonwoven fabric constant tension feeding device. Background Technology
[0002] The use of disposable hygiene products in people's daily lives is increasing, leading to a continuous increase in their production. Most disposable hygiene products are currently made from non-woven fabric. In existing production processes, two rolls of non-woven fabric are typically suspended on the fabric rack, one for backup and one for use. To ensure continuous high-speed production during roll changes and to maintain constant tension output, a constant tension feeding device is usually installed in the disposable hygiene product production line. This device buffers the non-woven fabric appropriately and maintains constant tension output. However, most existing constant tension feeding devices use a combination of a drive motor and a transmission belt. During high-speed production, the transmission belt is susceptible to elastic deformation and slippage, affecting response speed and making it impossible to effectively ensure uniform and stable constant tension output from the constant tension feeding device. Furthermore, it cannot achieve precise and rapid control of the constant tension output through motor control. This results in excessive tension deformation or damage to the non-woven fabric during roll changes, ultimately preventing the equipment from performing roll changes at high speeds and necessitating speed reduction, thus impacting overall production efficiency. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a nonwoven fabric constant tension feeding device that can effectively ensure the synchronization of the movement of two constant tension moving mechanisms and record the distance between them in real time, realize precise and rapid response control of nonwoven fabric constant tension, and whose driving method is simple, practical and reliable, and can ensure stable operation for a long time at high speed.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a nonwoven fabric constant tension feeding device, comprising an installation frame, a synchronous linkage mechanism, a linear drive component, a constant tension moving mechanism, and a real-time position recording component. Two constant tension moving mechanisms are respectively located on the left and right sides of the installation frame and slidably connected to the installation frame via sliding components. The nonwoven fabric is wound back and forth in a serpentine pattern between the two constant tension moving mechanisms for material storage. A synchronous linkage mechanism is provided between the two constant tension moving mechanisms. The linear drive component is located between one of the constant tension moving mechanisms and the installation frame and is used to drive the two constant tension moving mechanisms to move synchronously in opposite directions through the linkage of the synchronous linkage mechanism. The real-time position recording component is located on the installation frame and is connected to the synchronous linkage mechanism to record the real-time position of the two constant tension moving mechanisms.
[0005] Furthermore, the constant tension moving mechanism includes a moving frame and tension rollers. The upper end of the moving frame is slidably connected to the mounting frame through a sliding component, and the lower end of the moving frame extends downward. The moving frame has a rectangular frame structure, and multiple tension rollers that are evenly spaced and rotatable are fixedly installed inside the moving frame along its height direction.
[0006] Furthermore, the tension rollers on the two constant tension moving mechanisms are arranged in a staggered manner.
[0007] Furthermore, the sliding assembly includes two sliding rods and two sliding sleeves that are arranged in a one-to-one correspondence. The two sliding rods are arranged in parallel and spaced apart. One end of the sliding rod is fixedly installed on the first mounting plate, and the other end of the sliding rod is fixedly installed on the second mounting plate. The first mounting plate and the second mounting plate are both fixedly installed on the upper end of the mounting frame. The two sliding sleeves are arranged in parallel and spaced apart and fixedly installed on the movable frame. The sliding sleeves are adapted to the sliding rods and are sleeved on the corresponding sliding rods, and the two slide in a sliding fit. Limiting blocks are fixedly sleeved on both ends of the sliding rods.
[0008] Furthermore, the synchronous linkage mechanism includes a rotating rod and two connecting rods. The middle part of the rotating rod is rotatably connected to the mounting frame, and the two ends of the rotating rod are respectively hinged to one end of the two connecting rods. The other ends of the two connecting rods are respectively hinged to two constant tension moving mechanisms.
[0009] Furthermore, a rotating shaft is fixedly installed at the lower middle part of the rotating rod. The rotating shaft is rotatably installed in the fixed seat through a bearing. The fixed seat is fixedly installed on the upper part of the third mounting plate. The third mounting plate is fixedly located at the middle of the upper end of the mounting frame.
[0010] Furthermore, the real-time position recording component includes a rotary potentiometer, a large gear, and a small gear. The rotary potentiometer is fixedly mounted on a mounting base, which is fixedly located at the lower end of a third mounting plate. A small gear is fixedly mounted on the rotating shaft of the rotary potentiometer. The bottom end of the rotating shaft extends downward and passes through the mounting base, where a large gear is fixedly mounted. The small gear meshes with the large gear for transmission.
[0011] Furthermore, the rotating rod includes a first intermediate rod body and two first hinge blocks respectively fixed at both ends of the first intermediate rod body. The two first hinge blocks are respectively located on the left and right sides of the first intermediate rod body and are arranged perpendicular to the first intermediate rod body.
[0012] Furthermore, the connecting rod includes a second intermediate rod body and two second hinge blocks. Adjusting studs are fixedly provided on both end faces of the second intermediate rod body. The two ends of the second intermediate rod body are threadedly connected to one end of the two second hinge blocks through corresponding adjusting studs. Locking nuts are also threadedly connected to the adjusting studs. The other end of the second hinge block is provided with a hinge hole. The second hinge block is rotatably sleeved on the hinge shaft through the hinge hole. The constant tension moving mechanism and the rotating rod are both fixedly provided with hinge shafts.
[0013] Furthermore, the linear drive component is a cylinder, with two nozzles on the front and rear of the cylinder connected to two air pipes, each equipped with a solenoid valve.
[0014] As described above, the nonwoven fabric constant tension feeding device provided by this utility model has the following beneficial effects: By making the nonwoven fabric meander back and forth between two constant tension moving mechanisms in a serpentine pattern, and driven by a linear drive component and under the linkage of a synchronous linkage mechanism, the two constant tension moving mechanisms can be driven to move smoothly and synchronously in opposite directions. Furthermore, with the addition of a sliding component, the smoothness and stability of the constant tension moving mechanisms during movement can be effectively ensured. Therefore, during normal unwinding of the nonwoven fabric, driven by the linear drive component, as the two constant tension moving mechanisms move synchronously and move away from each other, a material buffer can be formed between them. During the splicing and rewinding of two rolls of nonwoven fabric, and in the initial stage after rewinding, driven by the linear drive component, as the two constant tension moving mechanisms move synchronously and move closer to each other, it can ensure that during the rewinding process... During the process, the backend equipment is continuously and stably supplied with materials to ensure the continuity of high-speed production of nonwoven fabric during roll changing. Throughout the nonwoven fabric feeding process, the real-time position recording component records the real-time position of the two constant tension moving mechanisms, i.e., the distance between the two constant tension moving mechanisms. This provides feedback and real-time control of the driving distance of the linear drive component, forming a closed-loop control to achieve the purpose of controlling constant tension. This ensures that the tension of the nonwoven fabric is constant during feeding. Furthermore, by adopting a driving method that combines linear drive components, synchronous linkage mechanisms, and real-time position recording components, the synchronicity of the movement of the two constant tension moving mechanisms can be effectively ensured. This enables precise and rapid response control of the constant tension of the nonwoven fabric. Moreover, this driving method has a simple structure, is practical and reliable, and can ensure stable operation for a long time at high speed. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of a nonwoven fabric constant tension feeding device according to the present invention.
[0016] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.
[0017] Figure 3 This is a top view of a nonwoven fabric constant tension feeding device according to the present invention.
[0018] Figure 4 This is a cross-sectional structural diagram of a nonwoven fabric constant tension feeding device according to the present invention.
[0019] Figure 5 for Figure 4 A magnified view of a portion of point B in the middle.
[0020] Figure 6 This is a schematic diagram showing the usage state of a nonwoven fabric constant tension feeding device according to this utility model.
[0021] In the diagram: 1-Mounting frame; 11-First mounting plate; 12-Second mounting plate; 13-Third mounting plate; 2-Synchronous linkage mechanism; 21-Rotating rod; 211-First intermediate rod; 212-First hinge block; 22-Connecting rod; 221-Second intermediate rod; 2211-Adjusting stud; 222-Second hinge block; 223-Locking nut; 3-Linear drive component; 4-Constant tension moving mechanism; 41-Moving frame; 42-Tension roller; 5-Sliding assembly; 51-Sliding rod; 52-Sliding sleeve; 53-Limiting block; 61-Rotating shaft; 62-Bearing; 63-Fixed seat; 7-Hinge shaft; 8-Real-time position recording component; 81-Rotating potentiometer; 82-Large gear; 83-Small gear; 84-Mounting seat; 9-Non-woven fabric. Detailed Implementation
[0022] The present invention will be further described below through specific embodiments.
[0023] like Figures 1 to 6 As shown, the nonwoven fabric constant tension feeding device of this utility model includes a mounting frame 1, a synchronous linkage mechanism 2, a linear drive 3, a constant tension moving mechanism 4, and a real-time position recording component 8. Two constant tension moving mechanisms 4 are respectively located on the left and right sides of the mounting frame 1 and are slidably connected to the mounting frame 1 via sliding components 5. Nonwoven fabric 9 is wound back and forth in a serpentine pattern between the two constant tension moving mechanisms 4 for material storage. The synchronous linkage mechanism 2 is provided between the two constant tension moving mechanisms 4. The linear drive 3 is located between one of the constant tension moving mechanisms 4 and the mounting frame 1 and is used to drive the two constant tension moving mechanisms 4 to move synchronously in opposite directions through the linkage of the synchronous linkage mechanism 2. The real-time position recording component 8 is located on the mounting frame 1 and is connected to the synchronous linkage mechanism 2 to record the real-time position of the two constant tension moving mechanisms 4.
[0024] By causing the nonwoven fabric 9 to wound back and forth in a serpentine pattern between the two constant tension moving mechanisms 4, and driven by the linear drive 3 and linked by the synchronous linkage mechanism 2, the two constant tension moving mechanisms 4 can move smoothly and synchronously in opposite directions. Furthermore, the sliding component 5 effectively ensures the smoothness and stability of the movement of the constant tension moving mechanisms 4. Therefore, during normal unwinding, the nonwoven fabric 9, driven by the linear drive 3, forms a material buffer between the two constant tension moving mechanisms 4 as they move synchronously and move away from each other. During splicing and changing rolls of nonwoven fabric 9, and in the initial stage after changing rolls, the linear drive 3, driven by the synchronous movement and approach of the two constant tension moving mechanisms 4, ensures a continuous and stable supply of material to the downstream equipment during the roll changing process. To achieve continuous high-speed production of nonwoven fabric 9 during roll changing, and throughout the entire nonwoven fabric 9 feeding process, the real-time position recording component 8 can record the real-time position of the two constant tension moving mechanisms 4, i.e., record the distance between the two constant tension moving mechanisms 4 in real time, thereby providing feedback and real-time control of the driving distance of the linear drive component 3, forming a closed-loop control to achieve the purpose of controlling constant tension. This ensures that the tension of nonwoven fabric 9 is constant during feeding. Furthermore, by adopting the cooperative driving method of the linear drive component 3, the synchronous linkage mechanism 2, and the real-time position recording component 8, the synchronicity of the movement of the two constant tension moving mechanisms 4 can be effectively ensured, enabling precise and rapid response control of the constant tension of nonwoven fabric 9. Moreover, this driving method has a simple structure, is practical and reliable, and can ensure stable operation for a long time at high speed.
[0025] The constant tension moving mechanism 4 includes a moving frame 41 and tension rollers 42. The upper end of the moving frame 41 is slidably connected to the mounting frame 1 through the sliding component 5. The lower end of the moving frame 41 extends downward. The moving frame 41 has a rectangular frame structure. Multiple tension rollers 42, which are evenly spaced and rotatable, are fixedly installed inside the moving frame 41 along its height direction. The tension rollers 42 are used to wind the nonwoven fabric 9. The tension rollers 42 on the two constant tension moving mechanisms 4 are staggered. Preferably, the number of tension rollers 42 is 6-10. During feeding, the tension rollers 42 can rotate along with the conveying of the nonwoven fabric 9 to reduce friction during feeding.
[0026] Both ends of one side surface of the movable frame 41 are provided with arc-shaped grooves that are adapted to the mounting shaft of the tension roller 42. The mounting shafts at both ends of the tension roller 42 are respectively installed in the corresponding arc-shaped grooves and locked and fixed to the movable frame 41 by locking bolt assemblies. Correspondingly, the mounting shaft of the tension roller 42 is provided with a first through hole through which the locking bolt assembly can pass, and the movable frame 41 is provided with a second through hole through which the locking bolt assembly can pass.
[0027] The sliding assembly 5 includes two corresponding sliding rods 51 and two sliding sleeves 52. The two sliding rods 51 are arranged in parallel and spaced apart. One end of each sliding rod 51 is fixedly installed on a first mounting plate 11, and the other end is fixedly installed on a second mounting plate 12. Both the first mounting plate 11 and the second mounting plate 12 are fixedly installed on the upper end of the mounting frame 1. The two sliding sleeves 52 are arranged in parallel and spaced apart and fixedly installed on the movable frame 41. The sliding sleeves 52 are adapted to the sliding rods 51 and are sleeved on the corresponding sliding rods 51, and the two slide in a sliding fit. In this way, the movement of the movable frame 41 can play a good guiding role and effectively ensure the stability and smoothness of the movement of the movable frame 41. For this purpose, limit blocks 53 are fixedly sleeved on both ends of each sliding rod 51.
[0028] The synchronous linkage mechanism 2 includes a rotating rod 21 and two connecting rods 22. The middle part of the rotating rod 21 is rotatably connected to the mounting frame 1. The two ends of the rotating rod 21 are respectively hinged to one end of the two connecting rods 22. The other ends of the two connecting rods 22 are respectively hinged to the two constant tension moving mechanisms 4. Specifically, the other ends of the two connecting rods 22 are respectively hinged to the moving frame 41 on the two constant tension moving mechanisms 4.
[0029] Correspondingly, a rotating shaft 61 is fixedly installed at the lower middle part of the rotating rod 21. The rotating shaft 61 is rotatably installed in the fixed seat 63 through the bearing 62. The fixed seat 63 is fixedly installed on the upper end of the third mounting plate 13. The third mounting plate 13 is fixedly located at the middle of the upper end of the mounting frame 1. This facilitates the rotational connection between the middle part of the rotating rod 21 and the mounting frame 1, and effectively ensures the smoothness of the rotation of the rotating rod 21.
[0030] The real-time position recording component 8 includes a rotary potentiometer 81, a large gear 82, and a small gear 83. The rotary potentiometer 81 is fixedly mounted on a mounting base 84, which is fixedly located at the lower end of the third mounting plate 13. The small gear 83 is fixedly mounted on the rotating shaft of the rotary potentiometer 81. The bottom end of the rotating shaft 61 extends downward and passes through the fixed base 63, and the large gear 82 is fixedly mounted thereon. The small gear 83 meshes with the large gear 82 for transmission. Thus, when the linear drive 3 drives the two constant tension moving mechanisms 4 to move synchronously in opposite directions under the cooperation of the synchronous linkage mechanism 2, the rotating rod 21 can adaptably rotate during this process. The rotating shaft 61 rotates synchronously, and the meshing transmission between the large gear 82 and the small gear 83 causes the rotating shaft on the rotary potentiometer 81 to rotate, thereby recording the real-time position of the two constant tension moving mechanisms 4, that is, recording the distance between the two constant tension moving mechanisms 4 in real time, and converting this distance into a value that can be read by a computer. The controller can then control the driving distance of the linear drive 3 based on the read value, thereby achieving the purpose of controlling constant tension and forming a closed-loop control. Compared with the linear position sensors used in the prior art, the rotary potentiometer 81 has higher accuracy, lower price, and more compact structure.
[0031] Accordingly, the rotating rod 21 includes a first intermediate rod body 211 and two first hinge blocks 212 respectively fixed at both ends of the first intermediate rod body 211. The two first hinge blocks 212 are respectively disposed on the left and right sides of the first intermediate rod body 211 and are arranged perpendicular to the first intermediate rod body 211.
[0032] The connecting rod 22 includes a second intermediate rod body 221 and two second hinge blocks 222. Adjusting studs 2211 are fixedly provided on both end faces of the second intermediate rod body 221. The two ends of the second intermediate rod body 221 are threadedly connected to one end of each of the two second hinge blocks 222 via corresponding adjusting studs 2211, thereby facilitating adjustment of the overall length of the connecting rod 22. Furthermore, a locking nut 223 is threadedly connected to the adjusting stud 2211 to secure the connection between the adjusting stud 2211 and the two second hinge blocks 222. The connection between 22 is further locked and fixed. The other end of the second hinge block 222 is provided with a hinge hole. The second hinge block 222 is rotatably sleeved on the hinge shaft 7 through the hinge hole. The hinge shaft 7 is fixedly provided on both the constant tension moving mechanism 4 and the rotating rod 21. Correspondingly, the hinge shaft 7 is a hinge bolt. The constant tension moving mechanism 4 and the rotating rod 21 are provided with threaded holes for threaded connection with the hinge bolt. Correspondingly, the threaded hole of the constant tension moving mechanism 4 is provided on the moving frame 41.
[0033] Correspondingly, one end of the second hinge block 222 is provided with a countersunk hole into which the adjusting stud 2211 can be inserted, and a fixing nut is fixedly provided on the second hinge block 222 at the countersunk hole, thereby facilitating the threaded connection between the adjusting stud 2211 and the second hinge block 222.
[0034] The linear drive component 3 is a cylinder. The two nozzles on the cylinder are connected to two air pipes, and each air pipe is equipped with a solenoid valve. The two nozzles are used to input gas at different pressures to control the cylinder. When the rotary potentiometer 81 records the real-time position of the two constant tension moving mechanisms 4, that is, records the distance between the two constant tension moving mechanisms 4 in real time, and converts this distance into a value that can be read by a computer, the solenoid valve can be controlled by the read value, thereby controlling the extension and retraction of the cylinder and controlling the extension and retraction force, thereby achieving the purpose of controlling constant tension. By setting up the cylinder, compared with the use of servo motors and synchronous belt components in the prior art, the cost of servo motors, servo amplifiers and synchronous belts can be saved, and the instability caused by synchronous belt slippage and wear at high speeds can be avoided.
[0035] The above are only some specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.
Claims
1. A nonwoven fabric constant tension feeding device, characterized in that: The device includes an installation frame, a synchronous linkage mechanism, a linear drive component, a constant tension moving mechanism, and a real-time position recording component. Two constant tension moving mechanisms are respectively located on the left and right sides of the installation frame and slidably connected to it via sliding components. Non-woven fabric is wound back and forth in a serpentine pattern between the two constant tension moving mechanisms for material storage. A synchronous linkage mechanism is provided between the two constant tension moving mechanisms. The linear drive component is located between one of the constant tension moving mechanisms and the installation frame and is used to drive the two constant tension moving mechanisms to move synchronously in opposite directions through the linkage of the synchronous linkage mechanism. The real-time position recording component is located on the installation frame and is connected to the synchronous linkage mechanism to record the real-time position of the two constant tension moving mechanisms.
2. The nonwoven fabric constant tension feeding device according to claim 1, characterized in that: The constant tension moving mechanism includes a moving frame and tension rollers. The upper end of the moving frame is slidably connected to the mounting frame through the sliding component. The lower end of the moving frame extends downward. The moving frame has a rectangular frame structure. Multiple tension rollers that are evenly spaced and rotatable are fixedly installed inside the moving frame along its height direction.
3. The nonwoven fabric constant tension feeding device according to claim 2, characterized in that: The tension rollers on the two constant tension moving mechanisms are arranged in a staggered manner.
4. The nonwoven fabric constant tension feeding device according to claim 2, characterized in that: The sliding assembly includes two corresponding sliding rods and two sliding sleeves. The two sliding rods are arranged in parallel and spaced apart. One end of each sliding rod is fixedly mounted on a first mounting plate, and the other end is fixedly mounted on a second mounting plate. Both the first and second mounting plates are fixedly mounted on the upper end of the mounting frame. The two sliding sleeves are arranged in parallel and spaced apart and fixedly mounted on the movable frame. Each sliding sleeve is adapted to the sliding rod and is sleeved on the corresponding sliding rod, and the two slide in a sliding fit. Limiting blocks are fixedly sleeved on both ends of each sliding rod.
5. The nonwoven fabric constant tension feeding device according to claim 1, characterized in that: The synchronous linkage mechanism includes a rotating rod and two connecting rods. The middle part of the rotating rod is rotatably connected to the mounting frame. The two ends of the rotating rod are respectively hinged to one end of the two connecting rods, and the other ends of the two connecting rods are respectively hinged to the two constant tension moving mechanisms.
6. The nonwoven fabric constant tension feeding device according to claim 5, characterized in that: A rotating shaft is fixedly installed at the lower middle part of the rotating rod. The rotating shaft is rotatably installed in the fixed seat through a bearing. The fixed seat is fixedly installed on the upper part of the third mounting plate. The third mounting plate is fixedly located at the middle of the upper end of the mounting frame.
7. The nonwoven fabric constant tension feeding device according to claim 6, characterized in that: The real-time position recording component includes a rotary potentiometer, a large gear, and a small gear. The rotary potentiometer is fixedly mounted on a mounting base, which is fixedly located at the lower end of the third mounting plate. The small gear is fixedly mounted on the rotating shaft of the rotary potentiometer. The bottom end of the rotating shaft extends downward and passes through the fixed base, where the large gear is fixedly mounted. The small gear meshes with the large gear for transmission.
8. The nonwoven fabric constant tension feeding device according to claim 5, characterized in that: The rotating rod includes a first intermediate rod body and two first hinge blocks respectively fixed at both ends of the first intermediate rod body. The two first hinge blocks are respectively located on the left and right sides of the first intermediate rod body and are arranged perpendicular to the first intermediate rod body.
9. A nonwoven fabric constant tension feeding device according to claim 5, characterized in that: The connecting rod includes a second intermediate rod body and two second hinge blocks. Adjusting studs are fixedly provided on both end faces of the second intermediate rod body. The two ends of the second intermediate rod body are respectively threaded to one end of the two second hinge blocks through the corresponding adjusting studs. Locking nuts are also threadedly connected to the adjusting studs. The other end of the second hinge block is provided with a hinge hole. The second hinge block is rotatably sleeved on the hinge shaft through the hinge hole. The hinge shaft is fixedly provided on both the constant tension moving mechanism and the rotating rod.
10. A nonwoven fabric constant tension feeding device according to claim 1, characterized in that: The linear drive component is a cylinder, and the front and rear nozzles on the cylinder are respectively connected to two air pipes, each of which is equipped with a solenoid valve.