Continuous fiber reinforced thermoplastic composite material mould pressing feeding device

Abstract

The invention relates to the technical field of composite material manufacturing, in particular to a continuous fiber reinforced thermoplastic composite material mold pressing feeding device which comprises a supporting frame, a plurality of rollers are rotationally connected into the supporting frame, and one end of each roller extends out of the supporting frame and is coaxially and fixedly connected with a chain wheel. A driving assembly for driving the rollers to rotate is arranged at one end of the supporting frame, and the chain wheels are in chain transmission with the driving assembly; a plurality of L-shaped transverse plates transversely arranged between every two adjacent rollers are arranged on the lower portion of the supporting frame, first motors are installed on the long edges of the L-shaped transverse plates, output shafts of the first motors are coaxially and fixedly connected with a plurality of eccentric wheels, and the ends, away from the first motors, of the output shafts are rotationally connected with the short edges of the L-shaped transverse plates; the sieve plates are located in the motion trail of the eccentric wheel. Vibration dust removal of the fiber material is synchronously completed in the feeding process, so that the fiber surface cleanliness and the resin impregnation uniformity are remarkably improved, and the mechanical property and the surface quality of the finished composite material are improved.

Description

Technical Field

[0001] This invention relates to the field of composite material manufacturing technology, and more specifically to a continuous fiber-reinforced thermoplastic composite molding feeding device. Background Technology

[0002] Continuous fiber reinforced thermoplastic composites are widely used in aerospace, automotive lightweighting, and high-performance sports equipment. Their mechanical properties and finished product quality largely depend on the uniformity of fiber impregnation and the integrity of resin distribution. During production, continuous fibers are typically unwound from a roll and fed into a molten resin bath for impregnation. To ensure sufficient resin wetting of the fibers and improve the density and mechanical properties of the composite material, the fibers are often preheated during feeding to reduce the temperature difference between the fibers and the molten resin, thereby enhancing wetting effect and impregnation efficiency.

[0003] However, during the impregnation process of fibers into a molten resin bath using a feeding device, there is a potential problem of the fibers adsorbing dust from the air. Due to the large surface area of ​​continuous fibers and their frequent contact with air during unfolding and feeding, tiny airborne particles easily adhere to the fiber surface. This not only leads to surface contamination but may also cause incomplete resin wetting or localized defect areas during subsequent impregnation, thus affecting the interlayer bonding and overall mechanical properties of the composite material. Especially in high-precision applications, such as aerospace structural components or high-performance automotive parts, these micro-defects can cause stress concentration, reducing material reliability.

[0004] Taking existing feeding devices as an example, their bottom is a roller feeding platform with several rollers to place fiber materials onto the rollers and feed them into the molten resin tank for impregnation. To reduce the adhesion of airborne dust to the surface of the fiber materials during the feeding process, a dust removal device is usually installed above the rollers to adsorb dust from the surface of the fiber materials. This device mainly consists of an air pump and a suction nozzle, and is usually located above the roller conveyor. The suction nozzle uses static suction to remove dust from the surface of the fiber materials conveyed by the rollers. However, this dust removal method has obvious limitations. Static suction has limited effectiveness on dust particles that are firmly attached or embedded in the fiber surface, resulting in dust particles still entering the molten resin tank with the fibers, increasing the risk of uneven resin impregnation, porosity formation, and finished product defects. Therefore, it is necessary to propose a continuous fiber-reinforced thermoplastic composite molding feeding device to solve the above problems. Summary of the Invention

[0005] To address the aforementioned issues, this invention discloses a continuous fiber-reinforced thermoplastic composite molding feeding device, which simultaneously performs vibration screening and dust removal on the fiber material during the feeding process, thereby significantly improving the surface cleanliness of the fiber and the uniformity of resin impregnation, and enhancing the mechanical properties and surface quality of the finished composite material.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a continuous fiber reinforced thermoplastic composite molding feeding device includes a support frame, a plurality of rollers are rotatably connected inside the support frame, one end of each roller extends out of the support frame and is coaxially fixedly connected to a sprocket, one end of the support frame is provided with a drive assembly for driving the rollers to rotate, and the sprockets are all chain driven with the drive assembly.

[0007] The upper part of the support frame is fixedly connected to a screen plate located between two adjacent rollers. The lower part of the support frame is provided with several horizontally placed "L"-shaped plates located between two adjacent rollers. A first motor is installed on the long side of each "L"-shaped plate. Several eccentric wheels are coaxially fixedly connected to the output shaft of each first motor. The end of the output shaft away from the first motor is rotatably connected to the short side of the "L"-shaped plate. The screen plates are all located in the movement trajectory of the eccentric wheels, and the eccentric wheels are all located between two adjacent rollers.

[0008] An adsorption component for removing dust from the surface of fibrous materials is fixedly connected to the upper part of the support frame.

[0009] The technical principle of the above solution is as follows: This device completes the smooth unfolding and feeding of fiber materials through the synchronous rotation of rollers; the eccentric wheel drives the screen plate to vibrate, vibrating the fiber material in the vertical direction, thereby loosening the particles and dust on the fiber surface. At the same time, the adsorption component on the upper part of the support frame dynamically adsorbs and cleans the loosened particles and dust on the fiber material surface during the feeding process, so that dust cannot adhere to the fiber, thereby ensuring that the fiber remains clean before entering the molten resin impregnation tank and improving the uniformity of resin impregnation.

[0010] The above approach has the following beneficial effects:

[0011] 1. This solution utilizes an eccentric wheel to vibrate the sieve plate, thereby effectively vibrating the particles and dust on the surface of the fiber material. This makes it easier to adsorb the particles and dust using the adsorption components, solving the problem of dust residue that easily occurs in traditional static adsorption methods.

[0012] 2. This solution achieves stable unfolding and feeding of continuous fibers through the synergistic effect of multiple rollers in the support frame and chain drive components, ensuring uniform fiber tension and preventing knotting, shifting or loosening of fibers during transportation, thereby improving the reliability of feeding and production efficiency.

[0013] 3. In this solution, the eccentric wheel and the sieve plate work together to make the lower surface of the fiber material also subject to vibration and disturbance, and form continuous contact with the sieve plate. This allows the particles and dust attached to the bottom of the fiber to be fully loosened and screened off, thereby achieving synchronous cleaning of the upper and lower surfaces of the fiber material. This further improves the overall cleanliness of the fiber, provides a high-quality substrate for subsequent resin impregnation, and significantly improves the molding quality and mechanical properties of the composite material.

[0014] Furthermore, the drive assembly includes a second motor, which is coaxially fixedly connected to an output gear. A chain is mounted on the output gear, and the sprockets are all driven by the chain.

[0015] Beneficial effects: With the above structure, the drive component of this device outputs power through the second motor, drives the chain through the output gear, and then drives each sprocket to rotate synchronously through the chain drive, so as to realize the stable rotation of the roller, thereby ensuring the smooth unfolding of the fiber material during the feeding process and improving the feeding accuracy and continuity.

[0016] Furthermore, the adsorption assembly includes a dust collection disc, with an air supply pipe connected to the side of the dust collection disc away from the roller. The air supply pipe is connected to an air pump, and the air pump is connected to a collection chamber, which contains a filter element.

[0017] Beneficial effects: The vacuuming disc is connected to an air pump via an air supply pipe, which in turn connects to a collection chamber. The collection chamber is equipped with a filter element, which can effectively filter and collect the adsorbed particles and dust, ensuring clean air emission, reducing dust fallback, and improving the cleaning effect of fibrous materials.

[0018] Furthermore, a support rod is provided on the upper part of the support frame, and a third motor is provided on the support rod. The brush cylinder is coaxially fixedly connected to the third motor.

[0019] Beneficial effects: The support rod at the top of the support frame drives the third motor to rotate the brush cylinder, so that the surface of the brush cylinder comes into contact with the fiber material, thereby mechanically brushing away the dust on the fiber surface and further improving cleaning efficiency.

[0020] Furthermore, a dust collection tube located at the front end of the brush tube is rotatably connected to the upper part of the support frame, and the dust collection tube is in contact with the brush tube.

[0021] Beneficial effects: The dust collection tube is located at the front end of the brush tube and in contact with the brush tube. It captures the tiny dust particles carried by the brush through adhesion, forming a brush-dust collection tube collaborative cleaning structure, realizing secondary dust capture and reducing residue on the fiber surface.

[0022] Furthermore, the upper part of the support frame is equipped with an electric heating strip located at the rear end of the brush tube.

[0023] Beneficial effects: The heating strip is located at the rear end of the brush cylinder, which can regulate the temperature of the fiber material, reduce the moisture content on the fiber surface, help prevent moisture from affecting subsequent resin impregnation, and improve fiber flexibility, which is conducive to stable feeding.

[0024] Furthermore, a blower is located at the rear of the suction plate on the upper part of the support frame.

[0025] Beneficial effects: The dust collector is equipped with a blower at the rear, which can use airflow to blow away the slight dust remaining on the surface of the fiber material, and then the dust collector will suck it away, further improving the cleanliness of the fiber material surface.

[0026] Furthermore, each roller is symmetrically equipped with a limit wheel.

[0027] Beneficial effects: Each roller is symmetrically equipped with limit wheels, which can constrain the fiber trajectory during feeding, prevent the fiber from deviating or leaving the set channel, and improve the stability of feeding.

[0028] Furthermore, each eccentric wheel is equipped with a through hole.

[0029] Beneficial effects: The eccentric wheels are equipped with through holes, which can be used to reduce the weight of the eccentric wheels and reduce the power loss of the first motor.

[0030] Furthermore, a protective plate is fixedly connected to the side of the support frame near the sprocket.

[0031] Beneficial effects: The protective plate is fixedly connected to the side of the support frame near the sprocket, which can effectively prevent the moving parts such as chains and gears from accidentally coming into contact with fiber materials or operators, ensuring the safety of equipment operation and operation. Attached Figure Description

[0032] Figure 1 This is a front view of an embodiment of the continuous fiber reinforced thermoplastic composite molding feeding device of the present invention;

[0033] Figure 2 This is a left view of the rollers and eccentric wheel in an embodiment of the continuous fiber reinforced thermoplastic composite molding feeding device of the present invention;

[0034] Figure 3 This is an isometric view of the eccentric wheel in an embodiment of the continuous fiber reinforced thermoplastic composite molding feeding device of the present invention;

[0035] Figure 4 This is a top view of the roller in an embodiment of the continuous fiber reinforced thermoplastic composite molding and feeding device of the present invention.

[0036] List of reference numerals in the attached diagram:

[0037] 1. Support frame; 2. Collection chamber; 3. Air pump; 4. Air supply pipe; 5. Dust collection tray; 6. Heating strip; 7. Adhesive dust canister; 8. Brush canister; 9. Third motor; 10. Sprocket; 11. Roller; 12. Limiting wheel; 13. Blower; 14. Second motor; 15. Output gear; 16. Chain; 17. Eccentric wheel; 18. First motor; 19. Protective plate; 20. Through hole; 21. Screen plate; 22. "L" shaped horizontal plate. Detailed Implementation

[0038] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0039] Example 1:

[0040] A continuous fiber-reinforced thermoplastic composite molding feeding device, as shown in the attached... Figure 1 and attached Figure 2 As shown: It includes a support frame 1, and several rollers 11 are rotatably connected inside the support frame 1. Each roller 11 is symmetrically provided with a limiting wheel 12 to further ensure the stability during the fiber feeding process. One end of each roller 11 extends outside the support frame 1 and is coaxially keyed to a sprocket 10. One end of the support frame 1 is provided with a drive assembly for driving the rollers 11 to rotate. The drive assembly includes a second motor 14, which is coaxially keyed to an output gear 15. A chain 16 is installed on the output gear 15, and the sprockets 10 are all chain driven with the chain 16, thereby realizing synchronous driving and stable feeding of each roller 11.

[0041] Further, see Appendix Figure 4 As shown, the upper part of the support frame 1 is snapped with a screen plate 21 located between two adjacent rollers 11, and the screen plates 21 are all made of flexible material; the lower part of the support frame 1 is welded with several horizontal "L"-shaped plates 22 located between two adjacent rollers 11, and a first motor 18 is installed on the long side of each "L"-shaped plate 22. The output shaft of each first motor 18 is coaxially keyed to an eccentric wheel 17, and the end of the output shaft of the first motor 18 away from the first motor 18 is rotatably connected to the short side of the "L"-shaped plate 22; each eccentric wheel 17 has a through hole to reduce the weight of the eccentric wheel 17, and the screen plates 21 are all located in the movement trajectory of the eccentric wheel 17; the eccentric wheels 17 are all arranged between two adjacent rollers 11, so that the screen plates 21 vibrate under the drive of the eccentric wheels 17, realizing the vibration screening of fiber materials and effectively loosening surface particles and dust.

[0042] In addition, an adsorption assembly for removing dust from the surface of the fibrous material is fixedly connected to the upper part of the support frame 1. The adsorption assembly includes a dust collection disc 5. An air supply pipe 4 is connected to the side of the dust collection disc 5 away from the roller 11. The air supply pipe 4 is connected to an air pump 3. The air pump 3 is further connected to a collection chamber 2, which is equipped with a filter element for efficiently collecting the adsorbed dust particles. At the same time, a blower 13 is also provided on the upper part of the support frame 1 at the rear end of the dust collection disc 5. This blower blows the vibrated particles and dust into the air so that the dust collection disc 5 can remove the particles and dust. Secondly, it can further dry the surface moisture of the fibrous material, thereby ensuring that the fibrous material remains clean and dry during the feeding process.

[0043] The specific implementation process is as follows: When using the continuous fiber reinforced thermoplastic composite molding feeding device of this embodiment, the fiber roll to be processed is first installed in the preset unwinding position of the support frame 1, and the fiber material is placed in the limiting wheel 12 to ensure that the fiber material will not deviate during the feeding process. Then, the second motor 14 is started to drive the output gear 15 to rotate, the output gear 15 drives the chain 16 to rotate, the chain 16 drives the sprocket 10 of each roller 11 to rotate, and then drives each roller 11 to rotate synchronously, so that the fiber material is smoothly unfolded along the inside of the support frame 1 for feeding; and the first motor 18, the air pump 3, and the blower 13 are turned on.

[0044] As the fiber material enters the vibrating screening area through the roller 11, the first motor 18 is energized, causing the coaxially connected eccentric wheel 17 to rotate. Since the screen plate 21 is located in the long axis motion trajectory of the eccentric wheel 17, the rotation of the eccentric wheel 17 causes one end of its long axis to generate a periodic vibration force on the screen plate 21, causing the screen plate 21 to generate periodic micro-vibrations in the vertical direction. During the vibration, the screen plate 21 transmits the periodic vibration to the fiber material, causing it to shake slightly, loosening the dust and particles on the fiber surface and causing them to fall off the fiber surface or vibrate into the air, thus preventing them from adhering to the fiber material surface. At the same time as the vibrating screening, the air pump 3 and the dust collection disc 5 start working, drawing air and particles into the air pump 3 through the air supply pipe 4 and further guiding them into the collection chamber 2. The filter element efficiently traps the dust and particles, thereby achieving dynamic cleaning of the fiber surface. The blower 13 at the rear of the dust collection plate 5 works simultaneously to further disperse the dust and particles raised during the vibration into the air, making them easier to be captured by the adsorption components. At the same time, the blower 13 can also dry the residual moisture on the fiber surface, ensuring that the fiber is dry and clean when it is fed, and avoiding the impact of moisture and dust on subsequent resin impregnation.

[0045] Throughout the process, the synchronous rotation of roller 11, the vibration of screen plate 21, and the linkage of dust suction disc 5 and blower 13 form a continuous and efficient feeding and cleaning system, achieving simultaneous operation of stable unfolding of fiber materials, vibratory screening, dust adsorption, and surface moisture drying. This device, through a combination of mechanical vibration and dynamic adsorption, significantly improves the cleanliness of the fiber material surface, ensuring the uniformity of subsequent molten resin impregnation, thereby enhancing the mechanical properties and surface quality of the final composite material.

[0046] Example 2:

[0047] As attached Figure 1 As shown, the difference from Embodiment 1 is that the upper part of the support frame 1 is further provided with a support rod, on which a third motor 9 is installed. The output end of the third motor 9 is coaxially fixedly connected to a brush cylinder 8, which is used to brush and clean the surface of the fiber material during the feeding process. At the same time, a dust collection tube 7 located at the front end of the brush cylinder 8 is also rotatably connected to the upper part of the support frame 1. The dust collection tube 7 and the brush cylinder 8 are in contact with each other, so that while the brush cylinder 8 rotates to clean the fiber surface, the particles and dust attached to the brush cylinder 8 are further transferred and collected to the surface of the dust collection tube 7, achieving a dual cleaning effect. In addition, the upper part of the support frame 1 is also provided with an electric heating strip 6 located at the rear end of the brush cylinder 8, which is used to heat and dry the fiber material, thereby effectively removing residual moisture from the fiber surface and ensuring more uniform resin adhesion and penetration in the subsequent impregnation process.

[0048] The specific implementation process is as follows: In this embodiment, a support rod is fixedly provided on the upper part of the support frame 1, and a third motor 9 is installed on the support rod. The output end of the third motor 9 is coaxially fixedly connected to a brush cylinder 8. The third motor 9 is started and its rotation direction is opposite to the feeding direction, so that the brush cylinder 8 rotates at high speed. When the fiber material passes through the feeding area, the bristles of the brush cylinder 8 can fully contact the fiber surface and continuously mechanically brush it to effectively remove dust particles and fine impurities attached to the fiber.

[0049] Furthermore, as the brush cylinder 8 rotates and causes the dust on the fiber surface to peel off, some dust particles will adhere to the bristles of the brush cylinder 8; while the dust sticking cylinder 7 can repeatedly contact the brush cylinder 8 under the action of rotation, effectively transferring the dust and particles adsorbed on the surface of the brush cylinder 8 to the dust sticking cylinder 7, thereby preventing the dust from falling back to the fiber surface, and realizing the secondary cleaning and centralized collection of dust.

[0050] Furthermore, because an electric heating strip 6 is installed at the rear end of the brush cylinder 8, when the fiber material continues to be conveyed forward after dust removal, the electric heating strip 6 uniformly heats its surface, forming a stable hot air flow field, thereby quickly evaporating any residual moisture on the fiber surface. Through this heating and drying process, not only is the surface clean and dry of the fiber material ensured, but its wettability and resin distribution uniformity are also significantly improved during the subsequent resin impregnation process, thereby enhancing the mechanical properties and interfacial bonding strength of the finished composite material.

[0051] Therefore, in this embodiment, the brush cylinder 8 driven by the third motor 9 and the dust collection cylinder 7 work together to achieve mechanical cleaning and dust transfer on the fiber surface. At the same time, combined with the heating and drying function of the electric heating strip 6, a continuous processing flow of cleaning-collection-drying is formed, which significantly improves the cleanliness and stability of the fiber feeding process.

[0052] Example 3:

[0053] The difference from the above embodiments is that, as shown in the appendix... Figure 2 As shown, a protective plate 19 is fixedly connected to the side of the support frame 1 near the sprocket 10.

[0054] The specific implementation process is as follows: During fiber feeding, due to the continuous high-speed rotation of the sprocket 10, high-speed friction and intermittent vibration inevitably occur at the gear meshing area. This poses a safety hazard as operators may accidentally touch the gears when approaching the equipment. Therefore, a protective plate 19 is additionally fixedly installed on the side of the support frame 1 near the sprocket 10. This protective plate 19 covers the exposed parts of the sprocket 10 and chain 16, forming an isolation barrier. When the sprocket 10 and chain 16 rotate at high speed, the protective plate 19 can effectively prevent external impurities or fiber filaments from entering the gear meshing area, avoiding gear jamming or damage caused by foreign objects. At the same time, the protective plate 19 provides isolation and protection for operators, preventing accidental contact with the high-speed rotating gears during feeding, significantly improving the safety of equipment operation.

[0055] In summary, by setting a protective plate 19 on the side of the support frame 1 near the sprocket 10, this embodiment not only enhances the safety protection capability of the equipment during operation, but also further improves the reliability and practicality of the device.

[0056] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A continuous fiber-reinforced thermoplastic composite material molding feeding device comprising a support frame (1), characterized in that, The support frame (1) is rotatably connected to several rollers (11). One end of each roller (11) extends out of the support frame (1) and is coaxially fixedly connected to a sprocket (10). One end of the support frame (1) is provided with a drive assembly for driving the rollers (11) to rotate, and the sprockets (10) are all chain-driven with the drive assembly. The upper part of the support frame (1) is fixedly connected to a screen plate (21) located between two adjacent rollers (11), and the lower part of the support frame (1) is provided with several horizontally placed "L"-shaped rollers (11) located between two adjacent rollers (11). The horizontal plate (22) and the long side of the "L"-shaped horizontal plate (22) are equipped with a first motor (18). The output shaft of the first motor (18) is coaxially fixedly connected to several eccentric wheels (17). The end of the output shaft away from the first motor is rotatably connected to the short side of the "L"-shaped horizontal plate (22). The sieve plate (21) is located in the movement trajectory of the eccentric wheel (17). The eccentric wheel (17) is located between two adjacent rollers (11). The upper part of the support frame (1) is fixedly connected to an adsorption component for removing dust from the surface of the fiber material.

2. The continuous fiber-reinforced thermoplastic composite mold-pressing feeding device according to claim 1, characterized in that: The drive assembly includes a second motor (14), which is coaxially fixedly connected to an output gear (15). A chain (16) is mounted on the output gear (15), and the sprockets (10) are all driven by the chain (16).

3. The continuous fiber-reinforced thermoplastic composite molding feeding device according to claim 1, characterized in that, The adsorption assembly includes a dust collection disc (5), and the side of the dust collection disc (5) away from the roller (11) is connected to an air supply pipe (4). The air supply pipe (4) is connected to an air pump (3), and the air pump (3) is connected to a collection chamber (2). A filter element is provided in the collection chamber (2).

4. The continuous fiber-reinforced thermoplastic composite mold-pressing feeding device according to claim 1, characterized in that, The support frame (1) has a support rod on the upper part, and a third motor (9) is provided on the support rod. The third motor (9) is coaxially fixedly connected to a brush cylinder (8).

5. The continuous fiber-reinforced thermoplastic composite mold-pressing feeding device according to claim 4, characterized in that, The upper part of the support frame (1) is rotatably connected to a dust sticking tube (7) located at the front end of the brush tube (8), and the dust sticking tube (7) is in contact with the brush tube (8).

6. The continuous fiber-reinforced thermoplastic composite mold-pressing feeding device according to claim 5, characterized in that, The upper part of the support frame (1) is provided with an electric heating strip (6) located at the rear end of the brush tube (8).

7. The continuous fiber-reinforced thermoplastic composite material press molding feeding apparatus according to claim 3, characterized by, The upper part of the support frame (1) is equipped with a blower (13) located at the rear end of the dust collection plate (5).

8. The continuous fiber-reinforced thermoplastic composite mold-pressing feeding device according to claim 1, characterized in that, Each roller (11) is symmetrically provided with a limiting wheel (12).

9. The continuous fiber-reinforced thermoplastic composite mold-pressing feeding device according to claim 1, characterized in that, Each eccentric wheel (17) is provided with a through hole (20).

10. The continuous fiber-reinforced thermoplastic composite molding feeding device according to claim 1, characterized in that, A protective plate (19) is fixedly connected to the side of the support frame (1) near the sprocket (10).

Images