A PAEK melt film forced impregnation and tension synergic control apparatus

Abstract

The application discloses a PAEK melt film forced impregnation and tension synergic control device and belongs to the technical field of material forming. The PAEK melt film forced impregnation and tension synergic control device comprises a pre-combination assembly, an impregnation roller group, a thickness detection assembly and a winding module which are sequentially connected, wherein the pre-combination assembly comprises an extrusion device, a convergence guide block connected with the extrusion device and a fiber guide roller, and the extrusion device extrudes PAEK melt into the convergence guide block. The melt is prepared into a multi-strip structure, and is accurately stacked with a fiber bundle in the convergence guide block to form a sandwich structure similar to lower strips, fibers and upper strips. The fiber guide roller is provided with equidistant fiber grooves corresponding to the strip grooves, and the fiber bundle is accurately positioned. The convergence guide block is provided with a guide shallow groove to provide track guidance for the fibers and prevent the fibers from horizontally migrating during the impregnation.

Description

Technical Field

[0001] This invention relates to the field of material forming technology, specifically to a PAEK melt film forced impregnation and tension coordinated control device. Background Technology

[0002] Continuous fiber-reinforced polyaryletherketone (PAEK) thermoplastic composites have broad application prospects in aerospace, medical devices, and automotive lightweighting due to their excellent high-temperature resistance, chemical corrosion resistance, and mechanical properties. Existing impregnation technologies suffer from the following shortcomings: high-viscosity resins are difficult to penetrate into the fiber bundles between the monofilaments in a short time, leading to defects such as dry spots and porosity in the composite products; the resin film and fiber bundle composite lack precise positioning and guiding structures, resulting in uneven fiber distribution and unstable impregnation effects; furthermore, fiber tension and impregnation pressure are coupled during impregnation, and tension fluctuations can cause the fiber bundles to loosen or become over-tensioned, affecting product quality consistency; and the lack of online thickness detection and feedback control mechanisms makes it impossible to monitor and adjust impregnation process parameters in real time. Summary of the Invention

[0003] The purpose of this invention is to provide a PAEK melt film forced impregnation and tension coordinated control device. By preparing the melt into a multi-slit structure and precisely stacking it with the fiber bundle in a converging guide block, and then subjecting it to the alternating bending stress and compressive stress of a four-stage impregnation roller group, the melt is forced to repeatedly enter and exit the fiber bundle until it penetrates between the monofilaments, eliminating dry spots and pores, thus solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A PAEK melt film forced impregnation and tension coordinated control device includes a pre-composite component, an impregnation roller group, a thickness detection component and a winding module connected in sequence. The pre-composite component includes an extrusion device, a converging guide block connected to the extrusion device and a fiber guide roller. The extrusion device extrudes PAEK melt into the converging guide block, and the fiber guide roller guides the processed fibers into the converging guide block to composite with the PAEK melt. A heating rod is embedded inside the converging guide block, and the temperature is independently controlled. The impregnation roller assembly includes a mounting plate, a lower fixed roller, and an upper adjusting roller. The lower fixed roller and the upper adjusting roller are arranged alternately. The fiber-melt composite material passes around the lower fixed roller and the upper adjusting roller in an S-shape to form an impregnation belt. The thickness detection component includes a support rail and a thickness detector. The support rail spans the width of the impregnated tape, and the thickness detector is movably connected to the support rail and moves back and forth along the support rail to measure the thickness of the impregnated tape. Qualified impregnated tape is wound up by the winding module with constant tension.

[0005] Preferably, the confluence guide block includes an upper slitting plate, a lower slitting plate, and an end plate. The upper slitting plate is inclinedly disposed above the lower slitting plate. The upper and lower slitting plates are provided with a melt inlet and a slitting groove, which are connected. The lower surface of the upper slitting plate is provided with a shallow guide groove corresponding to the position of the slitting groove. The end plate is used to fix the position of the upper and lower slitting plates.

[0006] Preferably, the fiber guide roller has equally spaced fiber grooves, and the number and position of the fiber grooves correspond one-to-one with the slitting grooves.

[0007] Preferably, the slitting groove has a U-shaped cross-section, the depth of the slitting groove gradually decreases from the inlet to the outlet, the width gradually increases from the inlet to the outlet, and the guide shallow groove has a depth of 0.05-0.1mm.

[0008] Preferably, the lower fixed roller includes a pre-pressure venting roller, a penetration fusion roller, a main impregnation roller, and a polishing roller arranged sequentially along the composite traveling direction, and the pre-pressure venting roller, the penetration fusion roller, the main impregnation roller, and the polishing roller adopt a non-equal pressure working mode.

[0009] Preferably, the surface of the penetration fusion roller is provided with a cross-shaped pattern.

[0010] Preferably, a heating wire is embedded inside the main impregnation roller to create zoned temperatures on the roller surface.

[0011] Preferably, tension sensors are respectively installed at the bearing seats of the pre-pressure exhaust roller, the main impregnation roller, and the polishing roller to detect the fiber tension in each segment in real time.

[0012] Preferably, the control device further includes a system controller, which adjusts the speed of the drive motor of the corresponding lower fixed roller according to the detection signal of the tension sensor to establish a speed gradient to control the tension of each section; when the upper adjusting roller adjusts its height, the controller synchronously adjusts the speed of the adjacent lower fixed roller according to the preset height and the tension compensation model to offset the tension fluctuation.

[0013] Preferably, the end of the upper adjusting roller is connected to a slide block via a bearing, a guide protrusion is provided on one side of the slide block, a guide groove is provided on the mounting plate that is movably connected to the guide protrusion, and a lead screw is movably connected to the other side of the slide block, with an adjusting motor provided at one end of the lead screw.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention prepares the melt into a multi-slit structure and precisely stacks it with the fiber bundle in a converging guide block to form a sandwich-like superimposed structure of lower slit, fiber, and upper slit. The fiber guide roller has equidistant fiber grooves that correspond one-to-one with the slit grooves to accurately position the fiber bundle. The converging guide block is provided with shallow guide grooves to provide track guidance for the fiber, prevent the fiber from migrating laterally during the impregnation process, ensure that the fiber is evenly distributed in the final product, and avoid uneven fiber distribution and unstable impregnation effect. 2. This invention utilizes the alternating bending and compressive stresses of a four-stage impregnation roller assembly to force the melt to repeatedly enter and exit the fiber bundle until it penetrates between the monofilaments, eliminating dry spots and pores. The four-stage impregnation roller assembly is set with non-uniform pressure, each responsible for venting, penetration, main impregnation, and thickness setting. The melt impregnation process is gentle and controllable, avoiding damage to the fibers from instantaneous high pressure. The surface of the penetration fusion roller has a cross-shaped pattern to promote lateral flow of the slits. The main impregnation roller has embedded zoned heating wires to locally heat the edges of the slits, accelerating the diffusion and entanglement of molecular chains at the edges of adjacent slits, so that multiple slits are fused into a seamless whole, ensuring the consistency of the mechanical properties of the impregnated tape. 3. In this invention, tension sensors are installed at the bearing seats of the pre-pressure exhaust roller, the main impregnation roller, and the polishing roller to detect the tension of each section in real time. The controller adjusts the speed difference of the lower fixed roller according to the detection signal to establish a speed gradient. When the upper adjusting roller adjusts the height to change the impregnation pressure, the controller synchronously adjusts the speed of the adjacent lower fixed roller according to the height and tension compensation model to offset the tension fluctuation and realize independent and precise control of pressure and tension, avoiding mutual interference between the two.

[0015] 4. The thickness measuring instrument of the present invention scans back and forth along the support guide rail to monitor the transverse thickness of the impregnated belt in real time. The controller automatically adjusts the pressure and tension parameters of the impregnated roller group according to the thickness deviation to form a closed-loop quality control. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the PAEK melt film forced impregnation and tension coordinated control device of the present invention; Figure 2 This is a diagram showing the working state of the PAEK melt film forced impregnation and tension coordinated control device of the present invention; Figure 3 This is a diagram showing the state of fibers entering the fiber guide roller and converging guide block according to the present invention; Figure 4 This is a top view of the lower slab of the present invention; Figure 5 This is a structural diagram of the penetration fusion roller of the present invention; Figure 6 This is a structural diagram of the main impregnation roller of the present invention; Figure 7 This is a structural diagram of the upper adjusting roller of the present invention; Figure 8 This is a diagram showing the working state of the thickness detection component of the present invention.

[0017] In the diagram: 1. Composite component; 11. Converging guide block; 111. Upper slitting plate; 1111. Melt inlet; 1112. Slitting groove; 1113. Guide shallow groove; 112. Lower slitting plate; 113. End plate; 12. Fiber guide roller; 121. Fiber groove; 13. Heating rod; 2. Impregnation roller assembly; 21. Mounting plate; 211. Guide groove; 22. Lower fixed roller; 221. Pre-compression exhaust roller; 222. Penetration fusion roller; 2221. Cross-grain pattern; 223. Main impregnation roller; 2231. Heating wire; 224. Polishing roller; 23. Upper adjusting roller; 231. Slide block; 2311. Guide protrusion; 232. Slide rail; 233. Slider; 234. Lead screw; 235. Adjusting motor; 3. Thickness detection assembly; 31. Support guide rail; 32. Thickness detector; 4. Rewinding module. Detailed Implementation

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

[0019] To address the challenges of existing high-viscosity resins failing to penetrate deeply into the fiber bundles between monofilaments within a short time, the lack of precise positioning and guiding structures in resin-fiber bundle composites, tension fluctuations leading to loose or over-tensioned fiber bundles, and the absence of online thickness detection and feedback control mechanisms, please refer to [the relevant documentation / reference]. Figures 1-8 This embodiment provides the following technical solution: A PAEK melt film forced impregnation and tension coordinated control device includes a pre-composite component 1, an impregnation roller group 2, a thickness detection component 3, and a winding module 4 connected in sequence. The pre-composite component 1 composites the treated fibers with the PAEK melt film, sandwiching the fibers in the middle of the PAEK melt film, and uses the impregnation roller group 2 to force the molten resin to repeatedly enter and exit the fiber bundle. The thickness detection component 3 detects the thickness of the impregnated tape, and the processed impregnated tape is wound up and stored by the winding module 4.

[0020] Specifically, the pre-composite component 1 includes an extrusion device, a converging guide block 11 connected to the extrusion device, and a fiber guide roller 12. The extrusion device includes an extruder and a hopper. The extruder extrudes PAEEK high-viscosity melt from the extrusion head and into the converging guide block 11. The fiber guide roller 12 is located on one side of the converging guide block 11 and passes the processed fibers into the converging guide block 11 to be composited with the PAEEK high-viscosity melt. It should be understood that before entering the pre-composite component 1, the fibers are separated into uniform fiber bundles by a three-stage separation system. The fiber guide roller 12 has equally spaced fiber grooves 121, which are used to separate adjacent fiber bundles. The fiber bundles are loosely and uniformly distributed in the fiber grooves 121, and the fibers are heated by infrared radiation. The preheating temperature is set to 200°C. The preheating device ensures that the fibers reach the set temperature before entering the converging guide block 11. The fiber guide roller 12 is equipped with a heating structure to maintain the temperature of the fiber bundles.

[0021] More specifically, the converging guide block 11 is a precision-machined metal block with an embedded heating rod 13, allowing for independent temperature control. The converging guide block 11 includes an upper slitting plate 111, a lower slitting plate 112, and an end plate 113 connecting the ends of the upper and lower slitting plates 111 and 112. The upper slitting plate 111 is inclined above the lower slitting plate 112. A melt inlet groove 1111 is formed on the side of the upper and lower slitting plates 111 and 112 near the fiber guide roller 12. Slitting grooves 1112 communicating with the melt inlet groove 1111 are also formed on the upper and lower slitting plates 111 and 112. It is important to understand that the number and position of the slitting grooves 1112 correspond one-to-one with the fiber grooves 121. Each slitting groove 1112 has a U-shaped cross-section, and its depth gradually decreases from the inlet to the outlet, while its width gradually increases from the inlet to the outlet. The slitting plate 111 gradually widens to allow for natural expansion of the melt. Furthermore, a shallow guide groove 1113 is provided on the lower surface of the upper slitting plate 111. The guide groove 1113 corresponds one-to-one with the slitting groove 1112. The guide groove 1113 has a depth of 0.05-0.1mm, just enough to accommodate a single layer of fiber, serving as a guide. The high-viscosity PAEEK melt moves from the inlet to the outlet of the slitting groove 1112. The melt entering the slitting groove 1112 of the upper slitting plate 111 forms the upper slitting, and the melt entering the slitting groove 1112 of the lower slitting plate 112 forms the lower slitting. The fiber is laid flat along the guide groove 1113, landing precisely on the upper surface of the lower slitting. The upper slitting slides along the slitting groove 1112, covering the upper surface of the fiber. The composite of the lower slitting, fiber, and upper slitting is formed on the converging guide block 11, but no pressure is applied.

[0022] It is important to understand that the impregnation roller assembly 2 includes a mounting plate 21, a lower fixed roller 22, and an upper adjusting roller 23. The lower fixed roller 22 and the upper adjusting roller 23 are staggered on the mounting plate 21. The lower fixed roller 22 is movably connected to the mounting plate 21 via bearings. One end of the lower fixed roller 22 is equipped with a drive control motor to drive the rotation speed of the lower fixed roller 22. At least four lower fixed rollers 22 are provided to complete four-stage impregnation. The fiber and melt composite passes around the lower fixed roller 22 and the upper adjusting roller 23 in an S-shape. Each time it passes a lower fixed roller 22, the composite is subjected to bending stress, and the fiber bundles slightly disperse, making it easier for the melt to enter. Each time it passes a lower or upper roller, the composite is subjected to compressive stress, squeezing the melt in. The alternating action of bending and compression forces the melt into the fiber. The speed of the lower fixed roller 22 is precisely controlled by the motor. By adjusting the speed difference between different lower rollers, the tension of each fiber segment can be controlled. The upper adjusting roller 23 is responsible for pressure. The main function of the upper roller is to apply impregnation pressure and compress the composite in the middle.

[0023] Specifically, the lower fixed roller 22 includes a pre-pressure venting roller 221, a penetration fusion roller 222, a main impregnation roller 223, and a polishing roller 224 arranged sequentially. The pre-pressure venting roller 221 is located near the outlet of the converging guide block 11. The composite material leaving the converging guide block 11 is caught by the pre-pressure venting roller 221. The pressure of the pre-pressure venting roller 221 is set at 0.1-0.5 N / mm. After passing through the pre-pressure venting roller 221, interlayer air is removed from the composite material, completing the initial bonding. The pressure of the penetration fusion roller 222 is set at 5-20 N / mm. The penetration fusion roller 222 forces the melt to begin entering the fiber bundle, and the sliver begins to fuse. To improve the penetration effect, the surface of the penetration fusion roller 222 is provided with a cross-textured pattern 2221 to promote transverse flow and fusion of the sliver. The pressure of the main impregnation roller 223 is set at 20-50 N / mm. The pressure of the main impregnation roller 223 is set at 5-10 N / mm to force the melt to penetrate into the innermost part of the fiber bundle, completely eliminating dry spots. The main impregnation roller 223 is equipped with embedded heating wires 2231 to form zoned temperatures on the main impregnation roller 223, heating the edges of the slits and accelerating the fusion of the edges of adjacent slits, so that the slits are fused into a whole to form an impregnation strip. The pressure of the polishing roller 224 is set at 5-10 N / mm to control the thickness of the final product, polish the surface, and eliminate roller marks. The temperature of the polishing roller 224 must be lower than the setting temperature to accelerate the formation of the composite. The pre-pressure exhaust roller 221 and the penetration fusion roller 222 are also equipped with heating structures to prevent the composite from cooling and setting during the impregnation process.

[0024] It is important to understand that when the upper adjusting roller 23 presses down, the composite is flattened, and the path length increases slightly, resulting in increased tension in that section. When the upper adjusting roller 23 lifts up, the pressure decreases, the path length decreases slightly, and the tension decreases. The system controller simultaneously adjusts the pressure of the upper adjusting roller 23 and the rotational speed of the lower fixed roller 22 to achieve multiple coordinated modes, such as maintaining the tension when the pressure increases or increasing the tension synchronously when the pressure increases. More specifically, the end of the upper adjusting roller 23 is connected to a slide block 231 via a bearing. A guide protrusion 2311 is provided on one side of the slide block 231. A guide groove 211 is provided on the mounting plate 21 near the guide protrusion 2311. The guide protrusion 2311 is movably connected to the guide groove 211, and a slide rail 232 is provided on one side of the guide groove 211. A slider 233 is installed on one side of the slide block 231, and the slider 233 is movably connected to the slide rail 232. A lead screw 234 is movably connected to the other side of the slide block 231. The upper and lower ends of the lead screw 234 are connected to the mounting plate 21 through a bracket, and an adjusting motor 235 is provided at one end of the lead screw 234. When the adjusting motor 235 is working, it drives the lead screw 234 to rotate, controls the slide block 231 to move along the direction of the lead screw 234, and adjusts the height of the upper adjusting roller 23. The guide protrusion 2311 and the slider 233 are used to improve the stability of the movement of the slide block 231.

[0025] Importantly, in this embodiment, tension sensors are respectively installed at the bearing seats of the pre-pressure exhaust roller 221, the main impregnation roller 223, and the polishing roller 224 to detect the fiber tension of each segment in real time. The system controller adjusts the speed of the drive motor of the corresponding lower fixed roller 22 according to the detection signal of the tension sensor to establish a speed gradient to control the tension of each segment. When the upper adjusting roller 23 adjusts the roller height, the system controller synchronously adjusts the speed of the adjacent lower fixed roller 22 according to the preset height and tension compensation model, so that the tension fluctuation caused by the height change is canceled out, and the decoupled and coordinated control of impregnation pressure and tension is realized.

[0026] Furthermore, the thickness detection component 3 includes a support guide rail 31 and a thickness detector 32. The support guide rail 31 spans the entire width of the impregnation belt and is installed between the outlet of the impregnation roller group 2 and the winding module 4. The thickness detector 32 is movably connected to the support guide rail 31. A drive motor and a synchronous belt are installed on the support guide rail 31 to drive the thickness detector 32 to reciprocate along the support guide rail 31. The system controller receives the thickness information from the thickness detector 32 and feeds it back to the impregnation roller group 2. Specifically, the thickness detector 32 includes an upper detection unit and a lower detection unit. The upper detection unit contains an X-ray emission source or a laser displacement sensor that emits detection signals downwards. It has an internal cooling channel to prevent high-temperature environments from damaging electronic components. The lower detection unit contains an X-ray receiver or a laser receiving target that faces the upper detection unit and receives signals transmitted through the impregnation belt, detecting the signal attenuation. The upper and lower detection units can move precisely and synchronously along the support guide rail 31.

[0027] Working process: Continuous fibers are spread into uniform fiber bundles through a three-stage separation system. After being preheated to 200°C by infrared radiation, they enter the fiber guide roller 12. The fiber groove 121 separates the fibers. The PAEK melt is plasticized by the extruder and enters the converging guide block 11. Upper and lower slits are formed in the slitting grooves 1112 of the upper slitting plate 111 and the lower slitting plate 112. The fibers are laid flat along the guide shallow grooves 1113 on the lower surface of the upper slitting plate 111, and fall exactly on the upper surface of the lower slit. The upper slit covers the fibers, forming a composite. The composite passes through the four-stage impregnation rollers in an S-shape. The pre-pressure exhaust roller 221 removes interlayer air. The penetration fusion roller 222 forces the melt into the fiber bundle through the surface cross-texture 2221, promoting slitting fusion. The main impregnation roller 223 forces the melt to penetrate into the fiber. In the first section, the internal heating wire 2231 heats the slitting edges in sections to accelerate fusion. The final polishing roller 224 polishes the slitting edge to eliminate roller marks. Tension sensors at the bearing seats of the pre-pressure exhaust roller 221, the main impregnation roller 223, and the polishing roller 224 detect the tension of each section in real time. The controller adjusts the speed difference of the lower rollers to establish a speed gradient. When the upper adjusting roller 23 adjusts its height through the adjusting motor 235 and the lead screw 234, the controller adjusts the speed of the adjacent lower rollers synchronously according to the height and tension compensation model to offset tension fluctuations. The impregnated tape enters the thickness detection component 3. The thickness detector 32 scans back and forth along the support guide rail 31 to generate a transverse thickness distribution curve in real time. The controller adjusts the pressure and tension parameters of the impregnation roller group 2 according to the thickness deviation feedback. The qualified impregnated tape is wound up by the winding module 4 with constant tension.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the 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 invention.

Claims

1. A PAEK melt film forced impregnation and tension coordinated control device, comprising a pre-composite assembly (1), an impregnation roller group (2), a thickness detection assembly (3), and a winding module (4) connected in sequence, characterized in that, The pre-composite component (1) includes an extrusion device, a converging guide block (11) connected to the extrusion device, and a fiber guide roller (12). The extrusion device extrudes PAEK melt into the converging guide block (11), and the fiber guide roller (12) guides the processed fibers into the converging guide block (11) to be composited with the PAEK melt. A heating rod (13) is embedded inside the converging guide block (11), and the temperature is independently controlled. The impregnation roller assembly (2) includes a mounting plate (21), a lower fixed roller (22) and an upper adjusting roller (23). The lower fixed roller (22) and the upper adjusting roller (23) are staggered. The fiber-melt composite passes around the lower fixed roller (22) and the upper adjusting roller (23) in an S-shape to form an impregnation belt. The thickness detection component (3) includes a support rail (31) and a thickness detector (32). The support rail (31) spans the width of the impregnated tape. The thickness detector (32) is movably connected to the support rail (31) and moves back and forth along the support rail (31) to measure the thickness of the impregnated tape. Qualified impregnated tapes are wound up by the winding module (4) with constant tension.

2. The PAEK melt film forced impregnation and tension coordinated control device according to claim 1, characterized in that, The confluence guide block (11) includes an upper slitting plate (111), a lower slitting plate (112), and an end plate (113). The upper slitting plate (111) is inclined above the lower slitting plate (112). The upper slitting plate (111) and the lower slitting plate (112) are provided with a melt inlet groove (1111) and a slitting groove (1112). The melt inlet groove (1111) and the slitting groove (1112) are connected. The lower surface of the upper slitting plate (111) is provided with a guide shallow groove (1113) corresponding to the position of the slitting groove (1112). The end plate (113) is used to fix the position of the upper slitting plate (111) and the lower slitting plate (112).

3. The PAEK melt film forced impregnation and tension coordinated control device according to claim 2, characterized in that, The fiber guide roller (12) has equally spaced fiber grooves (121), and the number and position of the fiber grooves (121) correspond one-to-one with the slitting grooves (1112).

4. The PAEK melt film forced impregnation and tension coordinated control device according to claim 3, characterized in that, The slit groove (1112) has a U-shaped cross section. The depth of the slit groove (1112) gradually decreases from the inlet to the outlet, and the width gradually increases from the inlet to the outlet. The guide shallow groove (1113) has a groove depth of 0.05-0.1mm.

5. The PAEK melt film forced impregnation and tension coordinated control device according to claim 4, characterized in that, The lower fixed roller (22) includes a pre-pressure venting roller (221), a penetration fusion roller (222), a main impregnation roller (223), and a polishing roller (224) arranged sequentially along the direction of travel of the composite. The pre-pressure venting roller (221), the penetration fusion roller (222), the main impregnation roller (223), and the polishing roller (224) adopt a non-equal pressure working mode.

6. The PAEK melt film forced impregnation and tension coordinated control device according to claim 5, characterized in that, The surface of the penetration fusion roller (222) is provided with a cross-shaped pattern (2221).

7. The PAEK melt film forced impregnation and tension coordinated control device according to claim 6, characterized in that, The main impregnation roller (223) is internally equipped with heating wires (2231) for creating zoned temperatures on the roller surface.

8. The PAEK melt film forced impregnation and tension coordinated control device according to claim 7, characterized in that, Tension sensors are respectively installed at the bearing seats of the pre-pressure exhaust roller (221), the main impregnation roller (223) and the polishing roller (224) to detect the fiber tension in each segment in real time.

9. The PAEK melt film forced impregnation and tension coordinated control device according to claim 8, characterized in that, The control device also includes a system controller. The system controller adjusts the speed of the drive motor of the corresponding lower fixed roller (22) according to the detection signal of the tension sensor to establish a speed gradient to control the tension of each section. When the upper adjusting roller (23) adjusts its height, the controller adjusts the speed of the adjacent lower fixed roller (22) synchronously according to the preset height and the tension compensation model to offset the tension fluctuation.

10. The PAEK melt film forced impregnation and tension coordinated control device according to claim 9, characterized in that, The upper adjusting roller (23) is connected to a slide block (231) via a bearing. A guide protrusion (2311) is provided on one side of the slide block (231). A guide groove (211) is provided on the mounting plate (21) and is movably connected to the guide protrusion (2311). A lead screw (234) is movably connected to the other side of the slide block (231). An adjusting motor (235) is provided at one end of the lead screw (234).

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