Mechanical restraint and dynamic control in conjunction with a fiberizing device and continuous fiber manufacturing system

Abstract

The utility model belongs to the related technical field of machining, and it discloses a kind of mechanical constraint and dynamic control collaborative unwinding device and continuous fiber processing and manufacturing system, and unwinding device includes the mechanical constraint device and dynamic control device being arranged in front and back;Mechanical constraint device includes the positioning slot and convex pin being connected on mounting plate, and fiber silk material is limited from passing through in positioning slot, and it is passive unwinding from winding over on convex pin;Dynamic control device includes the linear drive structure and unwinding roller being connected on mounting plate, and linear drive structure is used to drive unwinding roller to move along linear reciprocating to carry out active unwinding on fiber silk material on unwinding roller.The utility model is combined by passive unwinding and active unwinding, so that unwinding device has multiple unwinding modes, so that when facing different fiber types, since it has multiple unwinding forms, adaptability can be improved, and the superposition of two unwinding forms is also conducive to guaranteeing unwinding effect, so as to be conducive to guaranteeing high-quality production of fiber.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, and more specifically, relates to a mechanical constraint and dynamic control coordinated fiber spreading device and a continuous fiber processing and manufacturing system. Background Technology

[0002] Achieving large-scale and stable high-quality production has always been a core technological challenge in the industrial manufacturing of carbon fibers. Among these challenges, the broadening effect of the fiber bundle during production directly affects the quality of the finished carbon fiber and its subsequent performance in composite materials; therefore, controlling the broadening state is a crucial step.

[0003] Currently, the broadening of carbon fiber tows is mostly achieved through traditional mechanical rollers or airflow methods. These methods are relatively limited and lack adaptability to fibers of different specifications and properties. Furthermore, the broadening effect still relies heavily on manual evaluation, including online pre-judgment during production and offline manual verification after production. Online inspection depends on the operator's visual experience and is easily affected by factors such as lighting, habits, and attention, leading to insufficient accuracy and difficulty in establishing unified quantitative standards. While offline verification is relatively objective, it is lagging, often failing to allow for timely adjustments to the operating production line when problems are discovered.

[0004] Current methods of fiber spreading lack diversity and struggle to accommodate different fiber types and complex process requirements. As carbon fiber production capacity continues to expand, these problems become increasingly prominent, not only limiting further improvements in spreading quality but also posing risks to the stability of carbon fiber production and its performance in downstream applications. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a mechanical constraint and dynamic control coordinated fiber spreading device and a continuous fiber processing and manufacturing system. This system solves the problems of limited methods and insufficient fiber adaptability in existing fiber spreading methods. It aims to utilize a passive structure for efficient fiber spreading while ensuring the spreading effect through active fiber spreading adjustment, thereby improving fiber adaptability. The system is simple in structure and easy to implement and operate.

[0006] To achieve the above objectives, according to one aspect of this utility model, a mechanical constraint and dynamic control coordinated fiber spreading device is provided, comprising a mechanical constraint device and a dynamic control device arranged sequentially along the process front and back; the mechanical constraint device includes a positioning groove and a convex pin connected to a mounting plate, wherein the fiber filament passes through the positioning groove for limiting and passes over the convex pin for passive spreading; the dynamic control device includes a linear drive structure and a spreading roller connected to the mounting plate, wherein the linear drive structure is used to drive the spreading roller to reciprocate along a straight line to actively spread the fiber filament on the spreading roller.

[0007] According to the mechanical constraint and dynamic control coordinated filament spreading device provided by this utility model, the mechanical constraint device includes an equal-width positioning groove, a first convex pin, a height-width positioning groove and a second convex pin arranged sequentially on the front and back of the mounting plate; the width of the equal-width positioning groove is consistent with the initial width of the fiber filament, and the width of the height-width positioning groove is greater than the width of the equal-width positioning groove.

[0008] According to the mechanical constraint and dynamic control coordinated yarn spreading device provided by this utility model, the linear drive structure and the yarn spreading roller are arranged in two sets in front and behind; The spinning roller is connected to the mounting plate via a linear bearing; The positioning groove is an annular groove provided on the outer wall of the cylinder.

[0009] According to the mechanical constraint and dynamic control synergistic filament spreading device provided by this utility model, the mechanical constraint device and the dynamic control device are detachable and their vertical positions are adjustable and connected to the mounting plate. And / or, a detection element is provided between the mechanical constraint device and the dynamic control device for measuring the fiber spreading size.

[0010] The mechanical constraint and dynamic control coordinated filament spreading device provided by this utility model also includes a pair of conveying pressure rollers connected to the mounting plate. The pair of conveying pressure rollers includes a pair of conveying rollers rotatably connected to the mounting plate and a rotation drive structure. The rotation drive structure drives one of the conveying rollers to rotate to provide conveying power to the passing fiber filaments.

[0011] The mechanical constraint and dynamic control coordinated filament spreading device provided by this utility model also includes a cantilever tension sensor connected to the mounting plate to detect the tension of the bypassed fiber filament; the conveying pressure roller group is provided in two sets, and the two sets of conveying pressure roller groups are located on the front and rear sides of the cantilever tension sensor.

[0012] The mechanical constraint and dynamic control coordinated fiber spreading device provided by this utility model also includes high-speed cameras respectively set before the mechanical constraint device and after the dynamic control device, for taking pictures of the passing fiber filaments to obtain the fiber quality before spreading and the fiber quality after spreading.

[0013] The mechanical constraint and dynamic control coordinated fiber spreading device provided by this utility model also includes an ion air bar connected to the mounting plate and located after the dynamic control device, for electrostatic removal of the fiber filaments after spreading.

[0014] The mechanical constraint and dynamic control coordinated filament spreading device provided by this utility model also includes multiple filament winding guide wheels arranged in a front-to-back pattern above the mounting plate for selectively and directly conveying fiber filaments.

[0015] According to another aspect of the present invention, a continuous fiber processing and manufacturing system is provided, including the mechanical constraint and dynamic control synergistic fiber spreading device described in any of the above claims.

[0016] Overall, compared with the prior art, the mechanical constraint and dynamic control coordinated fiber spreading device and continuous fiber processing and manufacturing system provided by this utility model offer the following advantages: In the fiber spreading device, the fiber material to be processed first undergoes passive spreading under the action of a convex pin via a mechanical constraint device. Then, it undergoes active spreading under the reciprocating movement of the spreading roller via a dynamic control device. The combination of passive and active spreading allows the spreading device to have multiple spreading methods, which can enhance the spreading effect. Thus, when dealing with different fiber types, the multiple spreading methods can improve adaptability. Furthermore, the superposition of two spreading methods can help ensure the spreading effect, thereby helping to ensure high-quality fiber production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the mechanical constraint and dynamic control coordinated filament spreading device provided by this utility model.

[0018] Figure 2 This is a schematic diagram of the equal-width positioning groove provided by this utility model.

[0019] Figure 3 This is a schematic diagram of the height and width positioning groove provided by this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the first convex pin provided by this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the second convex pin provided by this utility model.

[0022] Figure 6 This is a three-dimensional schematic diagram of the equal-width positioning groove provided by this utility model.

[0023] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1-1 Mounting plate; 1-2 Equal width positioning groove; 1-3 First convex pin; 1-4 Height and width positioning groove; 1-5 Second convex pin; 1-6 and 1-7 Servo motor; 1-8 and 1-9 Spreading roller; 1-10 Cantilever tension sensor; 1-11 and 1-12 Conveyor motor; 1-13 and 1-14 Conveyor to pressure roller assembly; 1-15 and 1-16 High-speed camera; 1-17 Ionizing air bar; 1-18 Winding guide roller. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Please see Figure 1 This embodiment provides a mechanical constraint and dynamic control coordinated fiber spreading device, which includes a mechanical constraint device and a dynamic control device arranged sequentially along the process front and back. The mechanical constraint device includes a positioning groove and a convex pin connected to the mounting plate 1-1. The fiber filament passes through the positioning groove for limiting and passes around the convex pin for passive spreading. The dynamic control device includes a linear drive structure and a spreading roller connected to the mounting plate 1-1. The linear drive structure is used to drive the spreading roller to move back and forth in a straight line to actively spread the fiber filament on the spreading roller.

[0026] In the fiber spreading device provided in this embodiment, the fiber filament to be processed is first passively spread by a mechanical constraint device under the action of a convex pin, and then actively spread by a dynamic control device under the reciprocating movement of the spreading roller. The combination of passive and active spreading allows the spreading device to have multiple spreading methods, which can enhance the spreading effect. Therefore, when facing different fiber types, the multiple spreading forms can improve adaptability, and the superposition of two spreading forms can also help ensure the spreading effect, thereby helping to ensure high-quality fiber production.

[0027] In some embodiments, reference Figure 1 , Figure 2 and Figure 3 The mechanical constraint device includes a positioning groove 1-2 of equal width, a first convex pin 1-3, a height-width positioning groove 1-4, and a second convex pin 1-5 arranged sequentially on the mounting plate 1-1. The width of the positioning groove 1-2 is the same as the initial width of the fiber filament, and the width of the height-width positioning groove 1-4 is greater than the width of the positioning groove 1-2. That is, the width of the positioning groove 1-2 can be the same as the initial width of the fiber filament, and the width of the height-width positioning groove 1-4, which is greater than the width of the positioning groove 1-2, can be consistent with the target width of the fiber filament after it is unfolded by the first convex pin.

[0028] The first convex pin 1-3 can be positioned higher than the equal-width positioning groove 1-2, and the second convex pin 1-5 can be positioned higher than the height-width positioning groove 1-4. The fiber filament can pass under the equal-width positioning groove 1-2, then over the first convex pin 1-3, then under the height-width positioning groove 1-4, and finally over the second convex pin 1-5. Efficient passive filament unfolding can be achieved through the two convex pins. (Reference) Figure 4 and Figure 5 A convex pin is a pin whose surface has a convex shape along its circumference. (Reference) Figure 6 The positioning groove is an annular groove on the outer wall of the cylinder, through which the fiber filaments pass, thereby playing a limiting role.

[0029] refer to Figure 1 The spreading roller is connected to the mounting plate 1-1 via a linear bearing. The linear bearing limits the linear movement direction of the spreading roller, improving movement stability. The linear drive structure may include a servo motor and a cam connector. The servo motor is connected to the spreading roller via the cam connector, which converts the motor's rotational motion into linear reciprocating motion. The cam connector can also be implemented using other transmission conversion methods. The linear drive structure may also employ linear electric cylinders, etc., to provide linear reciprocating motion; no specific limitation is made. Two sets of linear drive structures and spreading rollers are arranged in front and behind: servo motor 1-6 drives spreading roller 1-8, and servo motor 1-7 drives spreading roller 1-9, to enhance the flexibility of active spreading control and ensure effective active spreading.

[0030] In some embodiments, the mechanical constraint device and the dynamic control device are detachably and vertically adjustable and connected to the mounting plate 1-1. The mounting plate 1-1 can be vertically mounted and fixed on the workbench. The mounting plate 1-1 may have multiple holes to adjust the distance and height between the positioning groove, the convex pin, and the spreading roller. The width and depth of the equal-width positioning groove 1-2 and the height-width positioning groove 1-4 can be adjusted and replaced to match different specifications of fiber filaments. The first convex pin 1-3 and the second convex pin 1-5 can be adjusted and replaced to match different specifications of fiber filaments. The efficiency and width of fiber spreading can be adjusted by changing the radius of curvature of the first convex pin 1-3 and the second convex pin 1-5.

[0031] By changing the width of the equal-width positioning groove 1-2 and the height-width positioning groove 1-4, and the radius of curvature of the first convex pin 1-3 and the second convex pin 1-5, it is possible not only to match fiber filaments of different specifications, but also to customize and adjust the unfolded width; thereby further improving the adaptability to different fiber types.

[0032] Furthermore, a detection element can be provided between the mechanical constraint device and the dynamic control device to measure the fiber spreading size. The detection element can be, for example, a through-beam optical sensor, which can accurately measure the width and thickness of the spread fiber. Through signal acquisition and transmission, the detection signal can be fed back to the dynamic control device, controlling the servo motor to drive the linear bearing displacement, thereby achieving dynamic adjustment of the fiber spreading.

[0033] The passive mechanical constraint device is used to fix the fiber filament and perform initial fiber spreading, the through-beam photoelectric sensor is used to measure the width of the fiber filament after spreading, and the active dynamic control device is used for secondary adjustment of the width of the fiber filament after spreading. The mechanical constraint and dynamic control coordinated fiber spreading device provided in this embodiment achieves uniform fiber spreading by passively spreading the fiber through the structure, and the sensor monitors and feeds back the signal to adjust it in real time through dynamic control. It has a simple structure and is easy to implement and operate.

[0034] refer to Figure 1 The fiber spreading device also includes a pair of conveyor rollers connected to the mounting plate 1-1. The conveyor rollers include a pair of conveyor rollers rotatably connected to the mounting plate 1-1 and a rotation drive structure. The rotation drive structure drives one of the conveyor rollers to rotate, providing conveying power to the passing fiber filaments. The rotation drive structure may include a conveyor motor and a transmission structure. The conveyor motor is connected to the conveyor rollers via a transmission structure, such as a synchronous belt, to transmit rotation to the conveyor rollers. The fiber filaments pass between the pair of conveyor rollers, and the transmission is achieved by the rotation of the conveyor rollers.

[0035] refer to Figure 1 The fiber spreading device also includes a cantilever tension sensor 1-10 connected to the mounting plate 1-1 to detect the tension of the bypassed fiber filaments. The tension sensor can detect the tension of the fiber filaments, which is beneficial to keep the tension of the fiber filaments constant by regulating the fiber conveying force, thereby ensuring the quality of fiber manufacturing and achieving the manufacturing of high-quality fibers.

[0036] Furthermore, the conveyor roller assembly comprises two sets: conveyor roller assembly 1-13 driven by conveyor motor 1-11 and conveyor roller assembly 1-14 driven by conveyor motor 1-12; the two sets of conveyor roller assemblies are located on the front and rear sides of the cantilever tension sensor 1-10. This allows for adjustment of the conveyor roller rotation speed based on the tension sensor's detection results, thereby adjusting the fiber filament's movement speed and maintaining constant tension.

[0037] The fibers are wound in a Z-shape on the fiber spreader; Reference Figure 1After passing through the mechanical restraint device, the fiber passes between the conveyor pressure roller group 1-13, then around under the spreading roller 1-8, then around above the cantilever tension sensor 1-10, then around under the spreading roller 1-9, and finally out through the conveyor pressure roller group 1-14.

[0038] refer to Figure 1 The fiber spreading device also includes high-speed cameras installed before the mechanical constraint device and after the dynamic control device, respectively, for taking pictures of the passing fiber filaments to obtain the fiber quality before and after spreading.

[0039] refer to Figure 1 The fiber spreading device also includes an ion bar 1-17 connected to the mounting plate 1-1 and located after the dynamic control device, used to remove static electricity from the spread fiber filaments. Addressing the static electricity accumulation caused by mechanical friction in multiple processes, the ion bar 1-17 can efficiently remove static electricity generated on the fiber surface, avoiding burrs after the fiber filaments are spread. The ion bar 1-17 is perpendicular to the fiber movement direction, and the air inlet controls the static electricity elimination power by adjusting the air pressure.

[0040] refer to Figure 1 The fiber spreading device also includes multiple winding guide rollers 1-18 arranged in a front-to-back pattern above the mounting plate 1-1 for selectively and directly conveying fiber filaments. When preparing functional filaments by combining raw fiber filaments and functional monofilaments, the raw fiber filaments can alternately pass over the mechanical constraint device and dynamic control device in sequence for spreading. Since the functional monofilaments do not require spreading, they can be conveyed sequentially by passing over the winding guide rollers 1-18 above, thus achieving the conveying of both types of filaments and the preparation of functional filaments. The fiber filaments can also pass over the winding guide rollers 1-18 before entering the dynamic control device for active spreading, or pass over the mechanical constraint device before passing over the winding guide rollers 1-18 for passive spreading; the specific method is not limited. The winding guide rollers 1-18 improve the flexibility and adaptability of the fiber spreading device.

[0041] One method for adjusting fiber spreading of the above-mentioned fiber spreading device includes the following steps: The fiber width value before entering the co-fiber spreading device is measured using a high-speed camera 1-15; the unspread fiber bundle raw material is fixed in the equal width positioning groove 1-2, and the first spreading is completed by the first convex pin 1-3. After spreading, the fiber is fixed in the height and width positioning groove 1-4, and then the second spreading is completed by the second convex pin 1-5. A through-beam photoelectric sensor can be used to measure the width of the unfolded fiber, collect the data and compare it with a preset value, and then transmit the signal to the servo motor for adjustment; The unfolded fiber filaments are wound on the unfolding roller. If the unfolded width of the fiber filaments does not reach the preset value, the servo motor controls the unfolding roller to move linearly back and forth to actively unfold the fiber. The fiber filaments with the adjusted unfolded width are passed through the ion bar 1-17. The ion bar 1-17 generates a large number of positive and negative charges to neutralize the static electricity accumulated by the mechanical friction of the fiber filaments, thus preventing the fiber filaments from burring and breaking. Then, the fiber filament width value before leaving the co-unfolding device is measured using a high-speed camera 1-16. Feedback adjustment can also be made based on the measurement results.

[0042] In other embodiments, a continuous fiber processing and manufacturing system is also provided, which includes the mechanical constraint and dynamic control synergistic yarn spreading device described in any of the preceding embodiments. This processing and manufacturing system is, for example, a continuous fiber prepreg yarn manufacturing system, and is not specifically limited to any particular type, as long as the yarn spreading operation is required.

[0043] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filament-spreading device that combines mechanical constraint and dynamic control, characterized in that, It includes a mechanical constraint device and a dynamic control device arranged in sequence along the process front and back; the mechanical constraint device includes a positioning groove and a convex pin connected to the mounting plate, the fiber filament passes through the positioning groove for limiting, and passes around the convex pin for passive filament unfolding; The dynamic control device includes a linear drive structure and a filament spreading roller connected to the mounting plate. The linear drive structure is used to drive the filament spreading roller to move back and forth in a straight line to actively spread the fiber filaments on the filament spreading roller.

2. The mechanical constraint and dynamic control synergistic filament spreading device as described in claim 1, characterized in that, The mechanical restraint device includes an equal-width positioning groove, a first convex pin, a height-width positioning groove, and a second convex pin arranged sequentially on the front and back of the mounting plate; the width of the equal-width positioning groove is consistent with the initial width of the fiber filament, and the width of the height-width positioning groove is greater than the width of the equal-width positioning groove.

3. The mechanical constraint and dynamic control synergistic filament spreading device as described in claim 1, characterized in that, The linear drive structure and the filament spreading roller are arranged in two sets, one in front of the other. The spinning roller is connected to the mounting plate via a linear bearing; The positioning groove is an annular groove provided on the outer wall of the cylinder.

4. The mechanical constraint and dynamic control synergistic filament spreading device as described in claim 1, characterized in that, The mechanical restraint device and the dynamic control device are detachably and adjustable in height and connected to the mounting plate. And / or, a detection element is provided between the mechanical constraint device and the dynamic control device for measuring the fiber spreading size.

5. The mechanical constraint and dynamic control synergistic filament spreading device as described in claim 1, characterized in that, It also includes a pair of conveyor rollers connected to the mounting plate, the pair of conveyor rollers including a pair of conveyor rollers rotatably connected to the mounting plate and a rotation drive structure that drives one of the conveyor rollers to rotate to provide conveying power to the passing fiber filaments.

6. The mechanical constraint and dynamic control synergistic filament spreading device as described in claim 5, characterized in that, It also includes a cantilever tension sensor connected to the mounting plate to detect the tension of the bypassed fiber filament; the conveyor pressure roller group is provided in two sets, and the two sets of the conveyor pressure roller group are located on the front and rear sides of the cantilever tension sensor.

7. The mechanical constraint and dynamic control synergistic filament spreading device as described in claim 1, characterized in that, It also includes high-speed cameras installed before the mechanical constraint device and after the dynamic control device, respectively, for taking pictures of the passing fiber filaments to obtain the fiber quality before and after spreading.

8. The mechanical constraint and dynamic control synergistic filament spreading device as described in claim 1, characterized in that, It also includes an ion bar connected to the mounting plate after the dynamic control device, used to remove electrostatics from the unfurled fiber filaments.

9. The mechanical constraint and dynamic control synergistic filament spreading device as described in claim 1, characterized in that, It also includes multiple filament guide rollers arranged in a front-to-back configuration above the mounting plate for selectively and directly conveying fiber filaments.

10. A continuous fiber processing and manufacturing system, characterized in that, The device comprising the mechanical constraint and dynamic control synergistic spinning device as described in any one of claims 1-9.

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