Thermoplastic prepreg manufacturing equipment for in-situ forming

Abstract

The utility model relates to the technical field of composite material technology, and discloses thermoplastic prepreg manufacturing equipment for in-situ molding, which comprises an internal impregnation assembly and a surface gluing assembly, the internal impregnation assembly is arranged at the front end of the surface gluing assembly, the internal impregnation assembly comprises a glue tank, a bottom magnetic stirrer and an ultrasonic vibrator, and the bottom magnetic stirrer is arranged at the front end of the surface gluing assembly. The bottom magnetic stirrer is rotationally connected to the bottom of an inner cavity of the glue tank, and the ultrasonic vibrators are mounted at the bottom and the side edge of the bottom of the glue tank, so that the problems that the surface resin content of thermoplastic prepregs produced according to existing equipment and processes is generally the same as that of the interiors, and the surface resin content needs to be increased in the prior art are solved; the problems that only the overall resin content is increased, so that the mechanical property of the thermoplastic prepreg is reduced, the requirements of products with high mechanical property are difficult to meet, and the use range of the material is limited are solved.

Description

Technical Field

[0001] This utility model patent relates to the technical field of composite material technology, specifically, to a thermoplastic prepreg manufacturing device for in-situ molding. Background Art

[0002] A Chinese patent with publication number CN215040462U discloses a preforming device for preparing thermoplastic prepreg, including a preforming lower mold and a preforming upper mold, and the preforming upper mold is arranged above the preforming lower mold, and a preforming concave mold is arranged in the middle of the top of the preforming lower mold. The utility model evenly lays thermoplastic prepreg in the inner cavity of the preforming concave mold on the preforming lower mold, connects the preforming lower mold and the preforming upper mold as a whole through fixing mechanisms on both sides, connects the outer end of the vacuum tube to an external vacuum pump for vacuuming, adds water to the top inner cavity of the preforming upper mold, sets the temperature data required for molding on the PLC controller, uses a temperature sensor to monitor the temperature of the water inside the preforming upper mold, and does not cause large temperature fluctuations by water bath heating.

[0003] However, compared with thermoplastic prepregs used for compression molding, thermoplastic prepregs used for in-situ molding have higher requirements for resin distribution, and usually require a resin-rich layer with precisely controlled content on the surface. Thermoplastic prepregs produced using existing equipment and processes usually have the same surface resin content as the interior. If you want to increase the surface resin content, you can only increase the overall resin content, which leads to reduced mechanical properties of the thermoplastic prepreg, making it difficult to meet the requirements of high mechanical performance products, and limiting the scope of use of the material. Utility Model Content

[0004] The utility model aims to provide a thermoplastic prepreg manufacturing device for in-situ molding, aiming to solve the problem that the thermoplastic prepreg produced according to the existing equipment and process in the prior art usually has the same surface resin content as the interior, and if the surface resin content is to be increased, the overall resin content can only be increased, resulting in reduced mechanical properties of the thermoplastic prepreg, making it difficult to meet the requirements of high mechanical performance products, and limiting the scope of use of the material.

[0005] A thermoplastic prepreg manufacturing device for in-situ molding comprises an internal glue dipping component and a surface glue component, wherein the internal glue dipping component is arranged at the front end of the surface glue component, the internal glue dipping component comprises a glue tank, a bottom magnetic stirrer and an ultrasonic vibrator, the bottom magnetic stirrer is rotatably connected to the bottom of the inner cavity of the glue tank, and the ultrasonic vibrator is installed at the bottom and the side of the bottom of the glue tank.

[0006] The internal glue dipping component also includes a yarn guide roller, a stirrer motor, a stirring rod, a glue spray hose and a circulation pump. A plurality of the yarn guide rollers are evenly spaced and rotatably connected to the upper end of the inner cavity of the glue tank. The stirrer motor is installed at the lower end of the outer wall of the glue tank. The stirrer motor is transmission-connected to the stirring rod. The glue spray hose is installed in the middle of the glue tank. A circulation pump is installed at the bottom of the glue spray hose. Both ends of the circulation pump are connected to the glue spray hose and the glue outlet hose.

[0007] The surface gluing assembly includes a glue frame and a gluing roller, the glue frame includes an upper glue frame and a lower glue frame, the gluing roller includes an upper gluing roller and a lower gluing roller, the gluing roller is rotatably connected to the top of the lower glue frame, the upper gluing roller is placed at the bottom of the upper glue frame, and the lower gluing roller is placed inside the lower glue frame.

[0008] A material discharge baffle with an adjustable angle is installed at the bottom of the glue-applying frame, and the bottom of the material discharge baffle abuts against the top of the upper glue-dipping roller.

[0009] A scraper with an adjustable angle is installed on the top of the lower glue frame, and the scraper is against one side of the lower glue dipping roller.

[0010] A servo motor is installed on the outer side of the lower glue frame, and the upper glue dipping roller and the lower glue dipping roller are drivingly connected with the servo motor.

[0011] It also includes a yarn supply component, a yarn gathering component and a yarn spreading component, wherein the yarn supply component, the yarn gathering component and the yarn spreading component are placed at the front end of the internal dipping component, and the yarn supply component is rotatably connected to a plurality of yarn rolls, the plurality of yarn rolls are evenly spaced, and a tensioning device is provided on the plurality of yarn rolls.

[0012] The yarn spreading assembly is composed of one or a combination of a track assembly, a multi-directional vibration module, an ultrasonic vibration module, and an airflow jet collection system.

[0013] It also includes a drying and prepreg component, a hot pressing molding component, a temperature control cooling component, a traction component and a winding component. The drying and prepreg component, the hot pressing molding component, the temperature control cooling component, the traction component and the winding component are placed at the rear end of the surface gluing component. The drying and prepreg component is composed of a segmented temperature-controlled heating module.

[0014] The hot pressing forming component is composed of one or a combination of a high-temperature pressing roller group, a static heating mold group, and a high-temperature double steel belt press. The temperature control cooling component is composed of a multi-stage adjustable temperature pressing roller and a hot plate and a cooling plate. The hot plate is surrounded by a heat preservation cover.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model provides a thermoplastic prepreg manufacturing device for in-situ molding, which can increase the resin content of the prepreg surface layer, and can form a resin-rich layer on the prepreg surface without significantly increasing the resin content, thereby meeting the requirements of in-situ molding. Thus, the production of thermoplastic prepreg products with high mechanical properties for in-situ molding is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a thermoplastic prepreg manufacturing device for in-situ molding of the utility model;

[0018] Figure 2 This is a schematic structural diagram of an internal dipping component in a thermoplastic prepreg manufacturing device for in-situ molding of the utility model;

[0019] Figure 3 The utility model is a structural schematic diagram of a surface glue component in a thermoplastic prepreg manufacturing device for in-situ molding.

[0020] Reference numerals:

[0021] 1. Yarn supply assembly; 2. Yarn gathering assembly; 3. Yarn spreading assembly; 4. Internal glue dipping assembly; 5. Surface glue application assembly; 6. Drying and pre-impregnation assembly; 7. Hot pressing molding assembly; 8. Temperature control and cooling assembly; 9. Traction assembly; 10. Winding assembly; 11. Glue trough; 12. Yarn guide roller; 13. Agitator motor; 14. Stirring rod; 15. Bottom magnetic agitator; 16. Glue spray hose; 17. Circulation pump; 18. Ultrasonic vibrator; 19. Glue frame; 20. Discharge baffle; 21. Glue dipping roller; 22. Scraper; 23. Servo motor. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0024] A thermoplastic prepreg manufacturing device for in-situ molding includes an internal glue dipping component 4 and a surface glue component 5. The internal glue dipping component is placed at the front end of the surface glue component 5. The internal glue dipping component includes a glue tank 11, a bottom magnetic stirrer 15 and an ultrasonic vibrator 18. The bottom magnetic stirrer 15 is rotatably connected to the bottom of the inner cavity of the glue tank 11, and the ultrasonic vibrator 18 is installed at the bottom and the side of the bottom of the glue tank 11.

[0025] The internal glue dipping component 4 also includes a yarn guide roller 12, a stirrer motor 13, a stirring rod 14, a glue spraying hose 16 and a circulation pump 17. A plurality of yarn guide rollers 12 are evenly spaced and rotatably connected to the upper end of the inner cavity of the glue groove 11. The stirrer motor 13 is installed at the lower end of the outer wall of the glue groove 11. The stirrer motor 13 is transmission-connected to the stirring rod 14. The glue spraying hose 16 is installed in the middle of the glue groove 11. A circulation pump 17 is installed at the bottom of the glue spraying hose 16. Both ends of the circulation pump 17 are connected to the glue spraying hose 16 and the glue outlet hose.

[0026] The internal dipping assembly 4 is composed of a glue tank 11, a yarn guide roller group 12, a stirrer motor 13, a stirring rod 14, a bottom magnetic stirrer 15, a glue spraying hose 16, a circulation pump 17, and an ultrasonic vibration group 18. The glue tank 11 contains a resin suspension of a certain concentration. The stirrer motor 13 drives the stirring rod 14 with a stirring paddle to rotate so that the glue liquid is continuously mixed. The bottom magnetic stirrer prevents the powder from sinking to the bottom of the glue tank 11. The glue spraying hose 16 is connected to the circulation pump 17 and the glue outlet hose to circulate and stir the glue liquid. The glue spraying holes arrayed on the glue spraying hose 16 are perpendicular to the fiber direction to promote the impregnation of the powder into the fiber. The ultrasonic vibration group 18 is installed at the bottom and bottom side of the glue tank 11. The ultrasonic vibration generated breaks up the fibers in the glue liquid and impregnates the powder deeper into the fiber.

[0027] The surface gluing assembly 5 includes a glue frame 19 and a gluing roller 21. The glue frame 19 includes an upper glue frame 19 and a lower glue frame 19. The gluing roller 21 includes an upper gluing roller 21 and a lower gluing roller 21. The gluing roller 21 is rotatably connected to the top of the lower glue frame 19. The upper gluing roller 21 is placed at the bottom of the upper glue frame 19, and the lower gluing roller 21 is placed inside the lower glue frame 19.

[0028] The surface gluing component 5 is composed of a glue tank 19, a discharge baffle 20, a dipping roller 21, a scraper 22, and a servo motor 23. The glue tank 19 is divided into two upper and lower glue tanks, which contain a resin suspension glue solution of a certain concentration. The upper glue tank has a discharge baffle 20, and the discharge baffle 20 can adjust the angle to control the speed at which the glue solution flows out, thereby controlling the amount of glue solution flowing to the upper dipping roller. The lower dipping roller is half immersed in the glue solution in the lower glue tank. The lower glue tank has a scraper 22, and the angle can be adjusted to adjust the gap with the lower dipping roller and control the amount of glue on the lower dipping roller. The gap between the upper and lower dipping rollers 21 can be adjusted to meet the needs of gluing the surface of prepregs of different thicknesses. The upper and lower dipping rollers are driven by a servo motor, and the speed can be adjusted to adjust the amount of gluing.

[0029] A material discharge baffle 20 with an adjustable angle is installed at the bottom of the glue-applying frame 19 , and the bottom of the material discharge baffle 20 abuts against the top of the upper glue-applying roller 21 .

[0030] A scraper 22 with an adjustable angle is installed on the top of the lower glue frame 19 , and the scraper 22 abuts against one side of the lower glue dipping roller 21 .

[0031] A servo motor 23 is installed outside the lower glue frame 19 , and the upper glue dipping roller 21 and the lower glue dipping roller 21 are transmission-connected to the servo motor 23 .

[0032] It also includes a yarn supply component 1, a yarn gathering component 2 and a yarn spreading component 3. The yarn supply component 1, the yarn gathering component 2 and the yarn spreading component 3 are placed at the front end of the internal dipping component 4. A plurality of yarn rolls are rotatably connected to the yarn supply component 1. The plurality of yarn rolls are evenly spaced, and a tensioning device is provided on the plurality of yarn rolls.

[0033] Each axis of yarn on the creel of the yarn supply component 1 is equipped with a tension control component to ensure the stability of the tension of each yarn during the operation of the equipment. The yarn gathering component 2 gathers the yarn on the creel to the yarn spreading width to facilitate the subsequent yarn spreading operation. The yarn spreading component 3 is composed of a separate track group.

[0034] The yarn spreading assembly 3 is composed of one or a combination of a track assembly, a multi-directional vibration module, an ultrasonic vibration module, and an airflow jet collection system.

[0035] It also includes a drying and prepreg component 6, a hot pressing molding component 7, a temperature control and cooling component 8, a traction component 9 and a winding component 10. The drying and prepreg component 6, the hot pressing molding component 7, the temperature control and cooling component 8, the traction component 9 and the winding component 10 are placed at the rear end of the surface gluing component 5. The drying and prepreg component 6 is composed of a segmented temperature-controlled heating module.

[0036] There is a yarn spreading roller group on the rear side of the surface gluing component 5, which is used for better spreading of the fibers after surface gluing and better impregnation of the outer fibers with the surface glue. The drying and prepreg component 6 is composed of a multi-stage temperature-controlled oven, which dries and decomposes the moisture and other additives, melts the resin between the fibers, and realizes preliminary impregnation. The hot pressing molding component 7 is composed of multiple groups of high-temperature hot pressing rollers to complete the final impregnation and molding. The temperature control cooling component 8 is composed of multi-stage adjustable temperature pressing rollers, hot plates, and cooling plates. The hot plates are surrounded by heat preservation covers. The cooling speed can be controlled by setting the temperature of the hot plates, cooling plates, and pressing rollers to ensure the crystallinity of the crystalline / semi-crystalline thermoplastic resin.

[0037] The hot pressing forming component 7 is composed of one or a combination of a high-temperature pressing roller group, a static heating mold group, and a high-temperature double steel belt press. The temperature control and cooling component 8 is composed of multi-stage adjustable temperature pressing rollers and hot plates and cooling plates. A heat preservation cover is installed around the hot plate.

[0038] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0039] As shown in the drawings, a preferred embodiment of the present invention is provided.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermoplastic prepreg manufacturing device for in-situ molding, characterized in that: It includes an internal glue dipping component and a surface glue component. The internal glue dipping component is placed at the front end of the surface glue component. The internal glue dipping component includes a glue tank, a bottom magnetic stirrer and an ultrasonic vibrator. The bottom magnetic stirrer is rotatably connected to the bottom of the inner cavity of the glue tank, and the ultrasonic vibrator is installed at the bottom and the side of the bottom of the glue tank.

2. The thermoplastic prepreg manufacturing equipment for in-situ molding according to claim 1, characterized in that: The internal glue dipping component also includes a yarn guide roller, a stirrer motor, a stirring rod, a glue spray hose and a circulation pump. A plurality of the yarn guide rollers are evenly spaced and rotatably connected to the upper end of the inner cavity of the glue tank. The stirrer motor is installed at the lower end of the outer wall of the glue tank. The stirrer motor is transmission-connected to the stirring rod. The glue spray hose is installed in the middle of the glue tank. A circulation pump is installed at the bottom of the glue spray hose. Both ends of the circulation pump are connected to the glue spray hose and the glue outlet hose.

3. The thermoplastic prepreg manufacturing equipment for in-situ molding according to claim 2, characterized in that: The surface gluing assembly includes a glue frame and a gluing roller, the glue frame includes an upper glue frame and a lower glue frame, the gluing roller includes an upper gluing roller and a lower gluing roller, the gluing roller is rotatably connected to the top of the lower glue frame, the upper gluing roller is placed at the bottom of the upper glue frame, and the lower gluing roller is placed inside the lower glue frame.

4. The thermoplastic prepreg manufacturing equipment for in-situ molding according to claim 3, characterized in that: A material discharge baffle with an adjustable angle is installed at the bottom of the glue-applying frame, and the bottom of the material discharge baffle abuts against the top of the upper glue-dipping roller.

5. The thermoplastic prepreg manufacturing equipment for in-situ molding according to claim 4, characterized in that: A scraper with an adjustable angle is installed on the top of the lower glue frame, and the scraper is against one side of the lower glue dipping roller.

6. The thermoplastic prepreg manufacturing equipment for in-situ molding according to claim 5, characterized in that: A servo motor is installed on the outer side of the lower glue frame, and the upper glue dipping roller and the lower glue dipping roller are drivingly connected with the servo motor.

7. The thermoplastic prepreg manufacturing equipment for in-situ molding according to claim 6, characterized in that: It also includes a yarn supply component, a yarn gathering component and a yarn spreading component, wherein the yarn supply component, the yarn gathering component and the yarn spreading component are placed at the front end of the internal dipping component, and the yarn supply component is rotatably connected to a plurality of yarn rolls, the plurality of yarn rolls are evenly spaced, and a tensioning device is provided on the plurality of yarn rolls.

8. The thermoplastic prepreg manufacturing equipment for in-situ molding according to claim 7, characterized in that: The yarn spreading component is composed of one or a combination of a track group, a multi-directional vibration module, an ultrasonic vibration module, and an airflow jet collection system.

9. The thermoplastic prepreg manufacturing equipment for in-situ molding according to claim 8, characterized in that: It also includes a drying and prepreg component, a hot pressing molding component, a temperature control cooling component, a traction component and a winding component. The drying and prepreg component, the hot pressing molding component, the temperature control cooling component, the traction component and the winding component are placed at the rear end of the surface gluing component. The drying and prepreg component is composed of a segmented temperature-controlled heating module.

10. The thermoplastic prepreg manufacturing equipment for in-situ molding according to claim 9, characterized in that: The hot pressing forming component is composed of one or a combination of a high-temperature pressing roller group, a static heating mold group, and a high-temperature double steel belt press. The temperature control cooling component is composed of a multi-stage adjustable temperature pressing roller and a hot plate and a cooling plate. The hot plate is surrounded by a heat preservation cover.

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