Coating device for flame-retardant fiber prepreg

Abstract

The utility model belongs to the field of flame-retardant fiber prepreg spraying, particularly relates to a flame-retardant fiber prepreg coating device, and provides the following scheme aiming at the problems that volatile organic compounds (VOC) are discharged in the coating process of the existing prepreg and the field environment quality is influenced: the flame-retardant fiber prepreg coating device comprises a rack, and two conveying rollers are rotationally connected between two sides of the rack; the VOC spraying device comprises a rack, two conveying rollers are arranged on the rack, a conveying belt is connected between the two conveying rollers in a transmission mode, a motor is fixedly connected to one side of the rack, one end of an output shaft of the motor is fixed to one conveying roller, and a spraying box and a drying box are fixedly connected to the top of the rack. The prepreg is filtered through the activated carbon filter screen in the filter box, the on-site environment quality is improved, the influence on workers is reduced, and meanwhile, the prepreg can be stirred through the stirring shaft, so that the prepreg is more uniform and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of flame-retardant fiber prepreg coating technology, and in particular to a coating device for flame-retardant fiber prepreg. Background Technology

[0002] Prepreg is a high-performance composite material semi-finished product made by pre-impregnating continuous fibers or fabrics with resin. It combines the high strength of fibers with the excellent adhesion of resin, and features light weight, high strength, and corrosion resistance, thereby improving the overall strength and stiffness of the material.

[0003] A search revealed a device for uniformly coating aramid fiber-carbon fiber composite reinforced prepreg, disclosed in announcement number CN221453168U. This device includes a frame. Although it achieves mixing and stirring of the prepreg during use, the emission of volatile organic compounds (VOCs) during the coating process affects the environmental quality on site. Therefore, a coating device for flame-retardant fiber prepreg is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the emission of volatile organic compounds (VOCs) during the coating process of prepregs, which affects the quality of the on-site environment. Therefore, this invention proposes a coating device for flame-retardant fiber prepregs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A coating device for flame-retardant fiber prepreg includes a frame, two conveying rollers rotatably connected between the two sides of the frame, a conveyor belt drivingly connected between the two conveying rollers, a motor fixedly connected to one side of the frame, one end of the motor output shaft fixed to one of the conveying rollers, a spraying box and a drying box fixedly connected to the top of the frame, and gaps for the fabric to pass through are provided between the spraying box and the drying box and the conveyor belt.

[0007] A filter box and a fan are fixedly connected to the top of the drying oven. Multiple through-hole activated carbon filters are inserted into one side of the filter box. The air outlet of the fan is fixedly connected to the filter box. A main pipe is fixedly installed at the air inlet of the fan. The main pipe is fixedly connected to the drying oven. A branch pipe is fixedly connected to one side of the main pipe. The branch pipe is fixedly connected to the spray box. The inner diameter of the branch pipe is smaller than that of the main pipe.

[0008] The spraying mechanism is located on one side of the frame and is used to spray the fabric.

[0009] The leveling mechanism, located at the top of the frame, is used to level the coating.

[0010] As a further embodiment of this utility model, the spraying mechanism includes a fixed box and a delivery pump set at the bottom of the frame. The liquid extraction end of the delivery pump is fixedly connected to the fixed box. The spraying mechanism also includes an extrusion head fixed inside the spraying box. The liquid outlet end of the delivery pump is connected to the extrusion head through a pipe.

[0011] As a further improvement of this utility model, two first heating wires are fixedly connected between the inner walls of the two sides of the fixed box.

[0012] As a further embodiment of this utility model, a through-type stirring shaft is rotatably connected to one side of the spray box, and one end of the stirring shaft is connected to the circumference of the motor output shaft via a synchronous pulley and synchronous belt drive.

[0013] As a further embodiment of this utility model, a heating box is fixedly connected to one side of the filter box, and a second heating wire is fixedly connected between the inner walls of the two sides of the heating box.

[0014] As a further embodiment of this utility model, an exhaust pipe is fixedly connected to the side of the filter box away from the fan, and an inclined blower box is fixedly connected to one side of the spray box, with the exhaust pipe and the blower box being fixedly connected.

[0015] As a further embodiment of this utility model, the leveling mechanism includes a connecting plate, which is fixedly connected between the spray box and the drying box. The surface of the connecting plate is threaded with two through threaded rods, and a scraper is rotatably connected between the bottoms of the two threaded rods.

[0016] In this application, during use, the motor is started, driving the conveyor rollers and conveyor belt to rotate. The fabric passes through the bottom of the spraying box and drying box, while the conveyor belt moves synchronously with the fabric. The conveyor pump is started, spraying the prepreg onto the fabric through the extrusion head. At the same time as spraying, the fan is started, drawing VOC gas from the spraying box and drying box and then discharging it to the filter box. The air is filtered through the activated carbon filter in the filter box, and the filtered air is discharged into the blower box through the exhaust pipe. The blower box then blows away foreign objects on the surface of the fabric, reducing the impact of foreign objects on the spraying. At the same time, the heat generated when the second heating wire is started is drawn into the drying box by the fan, thereby improving the drying effect of the sprayed fabric. When the motor starts, the stirring shaft is also driven to rotate through the synchronous pulley and synchronous belt, thereby stirring the prepreg and making the prepreg more uniform. The scraper is used to smooth the sprayed prepreg. The height of the scraper can be adjusted by rotating the threaded rod, making it flexible to use.

[0017] Beneficial effects: In this utility model, the coating device for flame-retardant fiber prepreg, through the setting of the fan, can extract VOC gas from the spray box and drying box while prepreg is being processed, and then discharge it to the filter box, where it is filtered by the activated carbon filter, thereby improving the quality of the on-site environment and reducing the impact on workers.

[0018] In this utility model, the coating device for flame-retardant fiber prepreg is designed to be equipped with a stirring shaft installed in a fixed box. This allows the stirring shaft to stir the prepreg, making the prepreg more uniform and easier to use.

[0019] In this invention, a fan extracts VOC gases from the spraying box and drying box, and then discharges them into a filter box. The gases are filtered through an activated carbon filter in the filter box, which improves the quality of the on-site environment and reduces the impact on workers. At the same time, the stirring shaft can be used to stir the prepreg, making the prepreg more uniform and convenient to use. Attached Figure Description

[0020] Figure 1 This is a first-view three-dimensional structural schematic diagram of a coating device for flame-retardant fiber prepreg proposed in this utility model.

[0021] Figure 2 This is a second-view three-dimensional structural schematic diagram of a coating device for flame-retardant fiber prepreg proposed in this utility model.

[0022] Figure 3 This is a cross-sectional structural schematic diagram of a coating device for flame-retardant fiber prepreg proposed in this utility model.

[0023] In the diagram: 1. Frame; 2. Conveyor roller; 3. Conveyor belt; 4. Spraying box; 5. Drying box; 6. Filter box; 7. Activated carbon filter; 8. Exhaust pipe; 9. Air blower box; 10. Fan; 11. Main pipe; 12. Branch pipe; 13. Connecting plate; 14. Scraper; 15. Threaded rod; 16. Conveying pump; 17. Extruder head; 18. First heating wire; 19. Heating box; 20. Second heating wire; 21. Motor; 22. Fixing box; 23. Stirring shaft. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1, referring to Figures 1-3A coating apparatus includes: a frame 1, two conveying rollers 2 rotatably connected between the two sides of the frame 1, a conveyor belt 3 drivingly connected between the two conveying rollers 2, the conveyor belt 3 being used to support the fabric and improve the stability of the fabric during the conveying process, a motor 21 fixedly connected to one side of the frame 1, one end of the output shaft of the motor 21 being fixed to one of the conveying rollers 2, a spray box 4 and a drying box 5 fixedly connected to the top of the frame 1, gaps for the fabric to pass through are provided between the spray box 4 and the drying box 5 and the conveyor belt 3, the fabric is wound up and unwound by take-up rollers and unwound rollers, and passes through the bottom of the spray box 4 and the drying box 5 during the movement;

[0026] A filter box 6 and a fan 10 are fixedly connected to the top of the drying box 5. Multiple through activated carbon filters 7 are inserted into one side of the filter box 6. The air outlet of the fan 10 is fixedly connected to the filter box 6. A main pipe 11 is fixedly installed at the air inlet of the fan 10. The main pipe 11 is fixedly connected to the drying box 5. A branch pipe 12 is fixedly connected to one side of the main pipe 11. The branch pipe 12 is fixedly connected to the spray box 4. The fan 10 is started at the same time as the spraying. The fan 10 draws out the VOC gas from the spray box 4 and the drying box 5 and then discharges it to the filter box 6. The activated carbon filters 7 in the filter box 6 filter the gas, thereby improving the quality of the on-site environment. The inner diameter of the branch pipe 12 is smaller than that of the main pipe 11.

[0027] A spraying mechanism is installed on one side of the frame 1 for spraying the fabric.

[0028] A leveling mechanism is installed on top of the frame 1 to level the coating.

[0029] This application can be used in the field of flame-retardant fiber prepreg spraying, and can also be used in other fields applicable to this application.

[0030] Example 2, Reference Figures 1-3 Based on Example 1, an improved coating device for flame-retardant fiber prepreg is applied to the field of flame-retardant fiber prepreg spraying.

[0031] In this utility model, the spraying mechanism includes a fixed box 22 and a delivery pump 16 set at the bottom of the frame 1. The liquid extraction end of the delivery pump 16 is fixedly connected to the fixed box 22. The spraying mechanism also includes an extrusion head 17 fixed in the spraying box 4. The liquid outlet end of the delivery pump 16 is connected to the extrusion head 17 through a pipe. When the delivery pump 16 is started, the delivery pump 16 sprays the prepreg onto the fabric through the extrusion head 17.

[0032] In particular, two first heating wires 18 are fixedly connected between the inner walls of the two sides of the fixed box 22. The medium inside the spray box 4 is heated and kept warm by the first heating wires 18 to facilitate spraying.

[0033] It should be noted that a through-type stirring shaft 23 is rotatably connected to one side of the spray box 4. One end of the stirring shaft 23 is connected to the circumference of the output shaft of the motor 21 through a synchronous pulley and synchronous belt. When the motor 21 starts, it also drives the stirring shaft 23 to rotate through the synchronous pulley and synchronous belt, thereby stirring the prepreg and making the prepreg more uniform.

[0034] In this invention, a heating box 19 is fixedly connected to one side of the filter box 6, and a second heating wire 20 is fixedly connected between the inner walls of both sides of the heating box 19. The second heating wire 20 can accelerate the drying process.

[0035] In particular, the side of the filter box 6 away from the fan 10 is fixedly connected to an exhaust pipe 8, and the side of the spray box 4 is fixedly connected to an inclined blower box 9. The exhaust pipe 8 and the blower box 9 are fixedly connected. The filtered air is discharged into the blower box 9 through the exhaust pipe 8, and then blows away foreign objects on the surface of the fabric through the blower box 9, reducing the impact of foreign objects on the spraying.

[0036] It should be noted that the leveling mechanism includes a connecting plate 13, which is fixedly connected between the spray box 4 and the drying box 5. The surface of the connecting plate 13 is threaded with two through threaded rods 15, and a scraper 14 is rotatably connected between the bottoms of the two threaded rods 15. The scraper 14 is a double-layered scraper used to level the prepreg after spraying. By rotating the threaded rods 15, the height of the scraper 14 can be adjusted, making it flexible to use.

[0037] Working principle:

[0038] In this application, during use, motor 21 is started, driving conveyor roller 2 and conveyor belt 3 to rotate. The fabric passes through the bottom of spray box 4 and drying box 5, while conveyor belt 3 moves synchronously with the fabric. Conveyor pump 16 is started, spraying prepreg onto the fabric through extrusion head 17. Simultaneously, fan 10 is started, drawing VOC gases from spray box 4 and drying box 5 and discharging them to filter box 6. The air is filtered through activated carbon filter 7 in filter box 6, and the filtered air is discharged through exhaust pipe 8 into air blowing box 9. Air blowing box 9 then blows away foreign matter on the fabric surface, reducing the impact of foreign matter on spraying. The fan 10's design ensures that during prepreg application... While the prepreg is being impregnated, the blower 10 extracts VOC gases from the spraying box 4 and drying box 5, and then discharges them into the filter box 6. The activated carbon filter 7 in the filter box 6 filters the gases, improving the quality of the on-site environment and reducing the impact on workers. At the same time, the heat generated when the second heating wire 20 is started is drawn into the drying box 5 by the blower 10, thereby improving the drying effect of the sprayed fabric. When the motor 21 starts, it also drives the stirring shaft 23 to rotate through the synchronous pulley and synchronous belt, thereby stirring the prepreg and making the prepreg more uniform. The scraper 14 is used to smooth the sprayed prepreg. The height of the scraper 14 can be adjusted by rotating the threaded rod 15, making it flexible to use.

[0039] However, as is well known to those skilled in the art, the working principles and wiring methods of the fan 10, the first heating wire 18, the second heating wire 20 and the motor 21 are commonplace and belong to conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A coating device for flame retardant fibre pre-preg comprising a frame (1), characterised in that, Two conveying rollers (2) are rotatably connected between two sides of the rack (1), the conveying belt (3) is drivingly connected between the two conveying rollers (2), one side of the rack (1) is fixedly connected with the motor (21), one end of the output shaft of the motor (21) is fixed with one of the conveying rollers (2), the top of the rack (1) is fixedly connected with the spraying box (4) and the drying box (5), gaps for cloth passing are arranged between the spraying box (4) and the drying box (5) and the conveying belt (3); The top of the drying box (5) is fixedly connected with the filter box (6) and the fan (10), a plurality of active carbon filter screens (7) are inserted into one side of the filter box (6), the air outlet end of the fan (10) is fixedly communicated with the filter box (6), the air inlet end of the fan (10) is fixedly installed with the main pipe (11), the main pipe (11) is fixedly connected with the drying box (5), one side of the main pipe (11) is fixedly communicated with the branch pipe (12), the branch pipe (12) is fixedly connected with the spraying box (4), the inner diameter of the branch pipe (12) is smaller than that of the main pipe (11); The spraying mechanism is arranged on one side of the rack (1) and used for spraying the cloth; The scraping mechanism is arranged on the top of the rack (1) and used for scraping the paint.

2. A coating apparatus for flame retardant fiber prepreg according to claim 1, wherein The spraying mechanism comprises the fixed box (22) arranged at the bottom of the rack (1) and the conveying pump (16), the liquid suction end of the conveying pump (16) is fixedly connected with the fixed box (22), the spraying mechanism further comprises the extrusion head (17) fixedly arranged in the spraying box (4), and the liquid outlet end of the conveying pump (16) is connected with the extrusion head (17) through a pipeline.

3. A coating apparatus for flame retardant fiber prepreg according to claim 2, wherein Two first heating wires (18) are fixedly connected between the inner walls of the two sides of the fixed box (22).

4. A coating apparatus for flame retardant fiber prepreg according to claim 2, wherein One side of the spraying box (4) is rotatably connected with the penetrating stirring shaft (23), and one end of the stirring shaft (23) is drivingly connected with the circumference of the output shaft of the motor (21) through the synchronous wheel and synchronous belt.

5. The coating apparatus for flame retardant fiber prepreg according to claim 1, wherein The heating box (19) is fixedly connected to one side of the filter box (6), and the second heating wire (20) is fixedly connected between the inner walls of the two sides of the heating box (19).

6. A coating apparatus for flame retardant fiber prepreg according to claim 1, wherein The exhaust pipe (8) is fixedly communicated with the blowing box (9) which is fixedly connected to one side of the spraying box (4).

7. A coating apparatus for flame retardant fiber prepreg according to claim 1, wherein The scraping mechanism comprises the connecting plate (13) fixedly connected between the spraying box (4) and the drying box (5), the two penetrating threaded rods (15) are threadedly connected to the surface of the connecting plate (13), and the scraper (14) is rotatably connected between the bottoms of the two threaded rods (15).

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