Fiber reinforced composite material prepreg tow preparation device

Abstract

The utility model relates to a fiber reinforced composite material preimpregnated tow preparation device, which comprises an equipment shell, a preimpregnation treatment mechanism is arranged in the equipment shell, the preimpregnation treatment mechanism comprises a preimpregnation box and an infiltration box which are fixedly connected to the right side of the equipment shell, and the top of the preimpregnation box is rotatably connected with a fiber material roll. According to the fiber reinforced composite material pre-impregnated tow preparation device, the tow material roll can rotate along with the operation of the winding motor, so that a fiber tow can move along a U-shaped track in cooperation with the arrangement of the guide roller; in the resin powder infiltration process, redundant resin powder can directly fall on the bottom of the pre-impregnation box and directly enter the recycling material box along the material guide pipe in cooperation with the arranged cleaning assembly, so that the residual resin powder is convenient to recycle, in the hot melting process of resin on fiber tows, dripping of softened resin does not affect collection of the fiber tows, and the recycling efficiency of the fiber tows is improved. And the practical effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing and molding, in particular to a device for preparing prepreg bundles of fiber-reinforced composite materials. Background Art

[0002] Composite materials have the advantages of high specific strength, high specific modulus and good stability. They are widely used in aerospace, automobile manufacturing, shipbuilding and other fields that require both strength and lightness. Composite material 3D printing technology is an efficient, high-quality and highly customized composite material manufacturing technology that can achieve rapid design and manufacturing of composite materials. 3D printing of continuous fiber reinforced composite materials usually adopts methods such as printing while wetting or melting ready-made prepreg tow printing. Among these methods, direct melt printing of prepreg tow is widely used due to its advantages such as uniform distribution of fiber resin and low porosity. Therefore, the prepreg tow preparation device is an important part of the manufacturing process of continuous fiber reinforced composite materials.

[0003] A device for preparing prepreg bundles of continuous fiber reinforced composite materials is proposed in the patent document with announcement number CN219926945U. The patent improves the traditional molten pool infiltration into electrostatic spray gun infiltration, realizes the preparation of prepreg bundles of continuous fiber reinforced composite materials, and can complete the preparation of prepreg bundles of different continuous fibers and different resins. It has a high degree of integration and good quality of prepreg bundles. The fiber content of the prepreg bundles can be adjusted, and efficient and high-quality manufacturing of prepreg bundles of continuous fiber reinforced composite materials is realized. The problem of premature solidification of thermosetting resins in the molten pool is solved, and the remaining resin can be recovered and replaced, and the fibers will not be scratched.

[0004] However, although the vacuum recovery device provided in the above patent provides suction to recover the remaining resin powder deposited at the bottom of the impregnation closed chamber, since the continuous fibers are arranged vertically and pass through the impregnation closed chamber, the suction of the vacuum recovery device may easily cause the resin powder adsorbed on the continuous fibers to decrease during use, thereby affecting the production quality of the continuous fibers. Moreover, when the thermal radiation heating tube is operating, the resin on the continuous fibers may be softened by heat and there is a risk of dripping onto the prepreg bundle roll, so the practicality is poor. In view of this, the present application proposes a device for preparing prepreg bundles of fiber-reinforced composite materials. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a device for preparing prepreg bundles of fiber-reinforced composite materials, which has the advantages of facilitating the recovery of residual resin powder during the impregnation treatment of the fiber bundles, preventing the dripping of softened resin from affecting the collection of the fiber bundles, and effectively improving the practicability of the device. It solves the problem that the prepreg bundle preparation device in the prior art is prone to affect the resin powder adsorbed on the continuous fibers when recovering the residual resin powder, and there is a risk that the resin on the continuous fibers will drip onto the prepreg bundle roll after being softened by heat, resulting in poor practicability.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solutions: a fiber-reinforced composite material prepreg tow preparation device, comprising a device housing, wherein a prepreg processing mechanism is arranged inside the device housing;

[0007] The prepreg processing mechanism includes a prepreg box and an impregnation box fixedly connected to the right side of the equipment housing, the top of the prepreg box is rotatably connected to a fiber material roll, the outer side of the fiber material roll is wound with a fiber tow extending into the prepreg box, the top of the impregnation box is fixedly connected to a winding motor, and the output end of the winding motor is detachably connected to a tow material roll bonded to the end of the fiber tow;

[0008] An electrostatic spray gun extending into the prepreg box is fixedly connected to the interior of the equipment shell, a material guide pipe extending into the interior of the equipment shell is fixedly connected to the bottom of the prepreg box, a cleaning assembly for cleaning residual resin powder is arranged inside the prepreg box, a heating cylinder is fixedly connected to the interior of the impregnation box, a heat radiation tube is fixedly connected to the interior of the heating cylinder, and a cold air assembly is arranged on the top of the impregnation box.

[0009] Furthermore, the interiors of the prepreg box and the impregnation box are both rotatably connected with guide rollers, and the tops of the prepreg box and the impregnation box are both rotatably connected with guide rollers.

[0010] Furthermore, a first mounting frame rotatably connected to the fiber material roll is fixedly connected to the top of the prepreg box, and a second mounting frame for achieving fixed installation is fixedly connected to the top of the impregnation box.

[0011] Furthermore, a resin powder barrel connected to the electrostatic spray gun is fixedly connected inside the device shell, and a recovery material box connected to the material guide pipe is fixedly connected inside the device shell.

[0012] Furthermore, the cleaning assembly includes a rotating ring rotatably connected to the inside of the prepreg box, two scrapers are fixedly connected to the bottom of the rotating ring, a transmission gear ring is fixedly connected to the outside of the rotating ring, a micro motor is fixedly connected to the inside of the prepreg box, and an output end of the micro motor is fixedly connected to a transmission gear meshing with the transmission gear ring.

[0013] Furthermore, the cold air component includes a driving member fixedly connected to the right side of the device housing, and a cold air fan blade is fixedly connected to the output end of the driving member.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The fiber reinforced composite material prepreg tow preparation device has a tow material roll that can rotate with the operation of the winding motor, so that the fiber tow can move in a U-shaped track in coordination with the setting of the guide roller. During this process, the fiber tow can absorb the charged resin powder particles sprayed by the electrostatic spray gun, and the set heat radiation tube can soften the resin and bond it to the fiber tow, so as to facilitate the impregnation of the fiber tow with the resin, and after the air cooling treatment, the impregnated fiber tow is collected on the tow material roll, so as to prevent the fiber tow from sticking together.

[0016] Since the fiber bundle moves in a U-shaped trajectory, excess resin powder can fall directly to the bottom of the prepreg box during the process of impregnating the resin powder, and enter the recovery box directly along the guide pipe in conjunction with the cleaning component, so that the remaining resin powder can be easily recovered. In the process of hot melting of the resin on the fiber bundle, the dripping of the softened resin will not affect the collection of the fiber bundle, thereby conveniently and effectively improving the practicability and use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the housing of the device of the utility model;

[0019] Figure 3 It is a side sectional view of the prepreg box and the impregnation box of the utility model.

[0020] In the figure: 1. Equipment housing; 2. Prepreg box; 3. Impregnation box; 4. First mounting frame; 5. Fiber material roll; 6. Fiber filament bundle; 7. Guide roller; 8. Second mounting frame; 9. Winding motor; 10. Fiber bundle material roll; 11. Guide roller; 12. Resin powder barrel; 13. Electrostatic spray gun; 14. Heating cylinder; 15. Heat radiation tube; 16. Driving part; 17. Cooling fan blade; 18. Material guide pipe; 19. Rotating ring; 1901, transmission gear ring; 20. Scraper; 21. Micro motor; 22. Transmission gear; 23. Recovery material box. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 In this embodiment, a fiber reinforced composite material prepreg tow preparation device includes a device housing 1, and a prepreg processing mechanism is arranged inside the device housing 1.

[0023] In this embodiment, the prepreg processing mechanism includes a prepreg box 2 and an impregnation box 3 fixedly connected to the right side of the equipment housing 1. The top of the prepreg box 2 is rotatably connected to a fiber material roll 5. The top of the prepreg box 2 is fixedly connected to a first mounting frame 4 rotatably connected to the fiber material roll 5, so that the first mounting frame 4 can be used to conveniently position and install the fiber material roll 5. The outer side of the fiber material roll 5 is wrapped with a fiber bundle 6 extending into the prepreg box 2.

[0024] Among them, a winding motor 9 is fixedly connected to the top of the impregnation box 3, and a second mounting frame 8 for installation and fixation is fixedly connected to the top of the impregnation box 3, so that the second mounting frame 8 can be used to conveniently realize the installation and fixation of the winding motor 9. The output end of the winding motor 9 is detachably connected to a bundle material roll 10 bonded to the end of the fiber bundle 6, so that the bundle material roll 10 can be rotated with the operation of the winding motor 9, thereby playing a role in pulling the fiber bundle 6 to move.

[0025] Among them, the interior of the prepreg box 2 and the impregnation box 3 are both rotatably connected with guide rollers 7, so that the fiber bundles 6 can be conveniently moved in a U-shaped trajectory in the prepreg box 2 and the impregnation box 3 by using the setting of the guide rollers 7. The tops of the prepreg box 2 and the impregnation box 3 are both rotatably connected with guide rollers 11, so that the fiber bundles 6 can be conveniently prevented from contacting the prepreg box 2 and the impregnation box 3 by using the setting of the guide rollers 11.

[0026] In this embodiment, the interior of the equipment housing 1 is fixedly connected to an electrostatic spray gun 13 extending into the interior of the prepreg box 2, and the interior of the equipment housing 1 is fixedly connected to a resin powder barrel 12 connected to the electrostatic spray gun 13, so that the resin powder barrel 12 can supply resin powder to the electrostatic spray gun 13. The bottom of the prepreg box 2 is fixedly connected to a material guide pipe 18 extending into the interior of the equipment housing 1, and the interior of the equipment housing 1 is fixedly connected to a recovery material box 23 connected to the material guide pipe 18, so as to facilitate the recovery of residual resin powder.

[0027] Among them, a cleaning component for cleaning residual resin powder is arranged inside the prepreg box 2, and the cleaning component includes a rotating ring 19 rotatably connected to the inside of the prepreg box 2, two scrapers 20 are fixedly connected to the bottom of the rotating ring 19, a transmission gear ring 1901 is fixedly connected to the outer side of the rotating ring 19, and a micro motor 21 is fixedly connected to the inside of the prepreg box 2.

[0028] Among them, the output end of the micro motor 21 is fixedly connected to a transmission gear 22 meshing with the transmission gear ring 1901, so that the transmission action of the transmission gear 22 and the transmission gear ring 1901 is conveniently utilized to make the rotating ring 19 drive the scraper 20 to rotate along with the operation of the micro motor 21, so as to completely discharge the remaining resin powder in the prepreg box 2.

[0029] In this embodiment, a heating tube 14 is fixedly connected to the inside of the impregnation box 3, and a heat radiation tube 15 is fixedly connected to the inside of the heating tube 14. The heat radiation tube 15 can be used to soften the resin adsorbed on the fiber bundle 6 and bond it to the surface of the fiber bundle 6 to achieve impregnation treatment. A cold air component is arranged on the top of the impregnation box 3.

[0030] Among them, the cold air component includes a driving member 16 fixedly connected to the right side of the equipment housing 1, and the output end of the driving member 16 is fixedly connected to a cold air fan blade 17, which facilitates the cold air fan blade 17 to rotate to form cold air, so that the cold air is blown toward the fiber bundle 6 discharged from the impregnation box 3, thereby accelerating the cooling speed of the resin on the fiber bundle 6.

[0031] The beneficial effects of the above embodiments are:

[0032] The fiber reinforced composite material prepreg tow preparation device has a tow material roll 10 that can rotate with the operation of the winding motor 9, so as to cooperate with the setting of the guide roller 7 to make the fiber tow 6 move in a U-shaped track. During this process, the fiber tow 6 can absorb the charged resin powder particles sprayed by the electrostatic spray gun 13, and the heat radiation tube 15 can soften the resin and bond it to the fiber tow 6, so as to facilitate the impregnation of the fiber tow 6 with the resin, and after air cooling, the impregnated fiber tow 6 is collected on the tow material roll 10, so as to prevent the fiber tow 6 from sticking together.

[0033] Since the fiber bundle 6 moves in a U-shaped trajectory, excess resin powder can directly fall on the bottom of the prepreg box 2 during the process of impregnating the resin powder, and directly enter the recovery box 23 along the guide pipe 18 in conjunction with the cleaning component, so as to facilitate the recovery of the remaining resin powder. In addition, during the process of hot melting of the resin on the fiber bundle 6, the dripping of the softened resin will not affect the collection of the fiber bundle 6, thereby conveniently and effectively improving the practicality and use effect of the device.

[0034] The working principle of the above embodiment is:

[0035] When the fiber reinforced composite material prepreg tow preparation device is used, the fiber tow 6 on the fiber material roll 5 needs to be passed through the prepreg box 2 and the impregnation box 3, and the end of the fiber tow 6 is adhered to the tow material roll 10, so that the tow material roll 10 can rotate with the operation of the winding motor 9, driving the fiber tow 6 to move in the prepreg box 2 and the impregnation box 3. During this process, the electrostatic spray gun 13 can spray charged resin powder particles to the fiber tow 6, and the charged resin powder particles are adsorbed on the outside of the fiber tow 6, and the heat radiation tube 15 set in the impregnation box 3 can make the fiber tow 6 The absorbed resin is softened and adhered to the surface of the fiber bundle 6 to facilitate the impregnation treatment. The fiber bundle 6 after the impregnation treatment can be wound on the bundle material roll 10; in the process of the fiber bundle 6 absorbing the resin powder, the excess resin powder can directly fall on the bottom of the prepreg box 2 and directly enter the recovery box 23 along the guide pipe 18. The rotating ring 19 can utilize the transmission effect of the transmission gear 22 and the transmission gear ring 1901 to drive the scraper 20 to move with the operation of the micro motor 21, so as to make the residual resin powder in the prepreg box 2 completely discharged, so that the residual resin powder is convenient to recover.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fiber reinforced composite material prepreg tow preparation device, comprising a device housing (1), characterized in that: A prepreg treatment mechanism is arranged inside the equipment housing (1); The prepreg processing mechanism comprises a prepreg box (2) and an impregnation box (3) fixedly connected to the right side of the equipment housing (1); the top of the prepreg box (2) is rotatably connected to a fiber material roll (5); the outer side of the fiber material roll (5) is wound with a fiber bundle (6) extending into the prepreg box (2); the top of the impregnation box (3) is fixedly connected to a winding motor (9); the output end of the winding motor (9) is detachably connected to a fiber bundle roll (10) bonded to the end of the fiber bundle (6); The interior of the equipment housing (1) is fixedly connected to an electrostatic spray gun (13) extending into the interior of the prepreg box (2); the bottom of the prepreg box (2) is fixedly connected to a material guide pipe (18) extending into the interior of the equipment housing (1); the interior of the prepreg box (2) is provided with a cleaning component for cleaning residual resin powder; the interior of the impregnation box (3) is fixedly connected to a heating cylinder (14); the interior of the heating cylinder (14) is fixedly connected to a heat radiation tube (15); and the top of the impregnation box (3) is provided with a cold air component.

2. The device for preparing prepreg tow of fiber reinforced composite material according to claim 1, characterized in that: The interior of the prepreg box (2) and the impregnation box (3) are both rotatably connected to guide rollers (7), and the tops of the prepreg box (2) and the impregnation box (3) are both rotatably connected to guide rollers (11).

3. The device for preparing prepreg tow of fiber reinforced composite material according to claim 1, characterized in that: A first mounting frame (4) rotatably connected to the fiber material roll (5) is fixedly connected to the top of the prepreg box (2), and a second mounting frame (8) for achieving mounting and fixing is fixedly connected to the top of the impregnation box (3).

4. The device for preparing prepreg tow of fiber reinforced composite material according to claim 1, characterized in that: A resin powder barrel (12) in communication with an electrostatic spray gun (13) is fixedly connected to the interior of the equipment housing (1), and a recovery material box (23) in communication with a material guide pipe (18) is fixedly connected to the interior of the equipment housing (1).

5. The device for preparing prepreg tow of fiber reinforced composite material according to claim 1, characterized in that: The cleaning assembly comprises a rotating ring (19) rotatably connected to the interior of the prepreg box (2), two scrapers (20) being fixedly connected to the bottom of the rotating ring (19), a transmission gear ring (1901) being fixedly connected to the outside of the rotating ring (19), a micro motor (21) being fixedly connected to the interior of the prepreg box (2), and a transmission gear (22) meshing with the transmission gear ring (1901) being fixedly connected to the output end of the micro motor (21).

6. The device for preparing prepreg tow of fiber reinforced composite material according to claim 1, characterized in that: The cold air component comprises a driving member (16) fixedly connected to the right side of the device housing (1), and a cold air fan blade (17) is fixedly connected to the output end of the driving member (16).

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