A curing device for enhancing the compatibility of carbon fiber thermoplastic composites

Abstract

The utility model discloses a kind of solidification devices capable of enhancing compatibility of carbon fiber thermoplastic composite, belong to carbon fiber composite material technical field, including extrusion die, glue injection mechanism and traction device, the front side of extrusion die is provided with multiple groups of feed pipe, discharge pipe is provided on the rear side of extrusion die, glue injection pipe is communicated on extrusion die, conveying pipe is communicated on the side of glue injection mechanism, one end of conveying pipe is communicated with the top end of glue injection pipe, multiple groups of centralized passage communicated with feed pipe are arranged in the inside of extrusion die, the utility model, by in situ injection compatibilizer in extrusion passage and mechanical shearing synergistic effect, realize carbon fiber-resin interface nanoscale bonding reinforcement;Adjustable traction mechanism adapts the continuous production of different thickness products, avoid surface damage caused by traditional traction;The topological optimization design of centralized passage and extrusion passage significantly improves mixing uniformity, reduce porosity about 40% compared with traditional process.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber composite material technology, specifically a curing device that can enhance the compatibility of carbon fiber thermoplastic composite materials. Background Technology

[0002] Carbon fiber is an inorganic high-performance fiber with a carbon content of over 90%, which is transformed from organic fibers through a series of heat treatments. It is a new material with excellent mechanical properties, possessing the inherent characteristics of carbon materials, while also having the softness and processability of textile fibers. It is a new generation of reinforcing fiber.

[0003] The above-mentioned technical conditions also have shortcomings: after heat treatment, existing carbon fiber composite materials need to be cooled down. Most of the existing cooling methods use air cooling or water cooling, which consumes a lot of energy and has a long production cycle, thus reducing the processing efficiency of carbon fiber composite materials.

[0004] Based on this, the present invention designs a curing device that can enhance the compatibility of carbon fiber thermoplastic composite materials to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a curing device that can enhance the compatibility of carbon fiber thermoplastic composite materials, so as to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a curing device that enhances the compatibility of carbon fiber thermoplastic composite materials, comprising an extrusion mold, an injection mechanism, and a traction device. The extrusion mold has multiple sets of feed pipes on its front side and an outlet pipe on its rear side. An injection pipe is connected to the extrusion mold, and a conveying pipe is connected to one side of the injection mechanism. One end of the conveying pipe is connected to the top of the injection pipe. Multiple sets of centralized channels connected to the feed pipes are provided inside the extrusion mold. An extrusion channel connected to the multiple centralized channels is also provided inside the extrusion mold. One end of the extrusion channel is connected to the outlet pipe, and the bottom end of the extrusion channel is connected to the injection pipe.

[0007] By adopting the above technical solution, multiple sets of feed pipes can simultaneously introduce carbon fiber bundles and molten resin. After pre-aggregation in the centralized channel, they enter the extrusion channel. During the extrusion stage, the glue injection pipe injects compatibilizer into the material. The high-pressure shear environment in the channel forces the compatibilizer to penetrate to the fiber-resin interface, significantly improving the chemical bonding efficiency of the two phases.

[0008] Preferably, the traction device includes a frame, a drive motor is fixedly connected to one side of the frame, a drive roller is fixedly connected to the output shaft of the drive motor, a stabilizing shaft is rotatably connected to the other side of the frame, a driven roller is connected to one side of the stabilizing shaft, and a traction belt is sleeved on the outside of the driven roller and the drive roller.

[0009] By adopting the above technical solution, the drive motor drives the traction belt to rotate through the drive roller, and the driven roller cooperates with the tensioning traction belt to form a closed-loop transmission.

[0010] Preferably, the top and bottom of the upright are fixedly connected to telescopic cylinders, and lifting frames are fixedly connected to the telescopic shafts of the two sets of telescopic cylinders. Multiple sets of rotating shafts are arranged in pairs on the lifting frames, and a conveying roller is coaxially arranged on each set of rotating shafts.

[0011] By adopting the above technical solution, the telescopic cylinder drives the lifting frame to move vertically, which in turn drives multiple sets of conveying rollers to adjust their spacing synchronously. This structure can adapt to composite material products of different thicknesses, improve traction stability by increasing the contact area, and prevent damage to the material surface.

[0012] Preferably, the line connecting the driven roller and the drive roller shaft is always located between the lines connecting the shafts of the upper and lower sets of conveying rollers.

[0013] By adopting the above technical solutions, it is ensured that the traction belt always maintains full contact with the conveyor roller, eliminating the risk of traction belt derailment and ensuring the reliability of continuous production.

[0014] Preferably, the dispensing mechanism includes a storage tank and a delivery pump. The output end of the delivery pump is connected to a delivery pipe, and the input end of the delivery pump is connected to the storage tank. A compatibilizer is provided inside the storage tank.

[0015] By adopting the above technical solution, the quantitative delivery system achieves precise synergy between the compatibilizer and the extrusion process, avoiding phase separation problems caused by excessive addition.

[0016] In summary, this application has the following beneficial technical effects: by injecting compatibilizer in situ in the extrusion channel and through the synergistic effect of mechanical shearing, nanoscale bonding reinforcement of the carbon fiber-resin interface is achieved; the adjustable traction mechanism is adapted to the continuous production of products with different thicknesses, avoiding surface damage caused by traditional traction; the topology optimization design of the centralized channel and the extrusion channel significantly improves the mixing uniformity and reduces porosity by about 40% compared with the traditional process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2This is a schematic diagram of the internal structure of the extrusion die in this embodiment; Figure 3 This is a schematic diagram of the traction device in this embodiment; Figure 4 This is a partial front view of the traction device in this embodiment.

[0019] The attached diagram lists the components represented by each number as follows: 1. Extrusion die; 2. Injection mechanism; 3. Traction device; 31. Frame; 32. Telescopic cylinder; 33. Lifting frame; 34. Rotating shaft; 35. Conveying roller; 36. Drive motor; 37. Drive roller; 38. Stabilizing shaft; 39. Driven roller; 310. Traction belt; 4. Feed pipe; 5. Discharge pipe; 6. Injection pipe; 7. Conveying pipe; 8. Central channel; 9. Extrusion channel. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0022] A curing device for enhancing the compatibility of carbon fiber thermoplastic composites includes an extrusion die 1, an injection mechanism 2, and a traction device 3. Multiple feed pipes 4 are arranged on the front side of the extrusion die 1, and a discharge pipe 5 is arranged on the rear side of the extrusion die 1. Material is conveyed into the interior of the extrusion die 1 through the feed pipes 4, and after extrusion and blending, it is output from the discharge pipe 5. The material is then continuously tractioned by the traction device 3 to facilitate subsequent curing processing. An injection pipe 6 is connected to the extrusion die 1, and a conveying pipe 7 is connected to one side of the injection mechanism 2. One end of the conveying pipe 7 is connected to the top of the injection pipe 6. The end is connected, so that the adhesive can be continuously delivered to the inside of the extrusion mold 1, which can improve the compatibility of the composite material. Multiple sets of centralized channels 8 connected to the feed pipe 4 are provided inside the extrusion mold 1. Extrusion channels 9 connected to the multiple sets of centralized channels 8 are also provided inside the extrusion mold 1. One end of the extrusion channel 9 is connected to the discharge pipe 5, and the bottom end of the extrusion channel 9 is connected to the glue injection pipe 6. An appropriate amount of compatibilizer solution can be continuously injected into the extrusion channel 9. By injecting the compatibilizer solution as a coolant, there is no need for subsequent air cooling or water cooling. The compatibilizer solution is acrylic resin.

[0023] Furthermore, the traction device 3 includes a frame 31, on one side of which a drive motor 36 is fixedly connected. A drive roller 37 is fixedly connected to the output shaft of the drive motor 36. A stabilizing shaft 38 is rotatably connected to the other side of the frame 31. A driven roller 39 is connected to one side of the stabilizing shaft 38. A traction belt 310 is sleeved on the outside of the driven roller 39 and the drive roller 37. The traction belt 310 rotates under the action of the drive roller 37 and the driven roller 39, achieving a good transmission effect. Then, the output shafts of the two sets of drive motors 36 rotate in opposite directions, which can effectively transport the material passing between the two sets of traction belts 310.

[0024] Furthermore, telescopic cylinders 32 are fixedly connected to the top and bottom of the upright frame 31. The two sets of telescopic cylinders 32 can be controlled in coordination. Lifting frames 33 are fixedly connected to the telescopic shafts of the two sets of telescopic cylinders 32. Multiple sets of rotating shafts 34 are arranged in pairs on the lifting frames 33. Conveying rollers 35 are coaxially arranged on each set of rotating shafts 34. The lifting frames 33 are controlled to move vertically by the telescopic cylinders 32, thereby adjusting the position of the multiple sets of conveying rollers 35. At the same time, the inner side of the traction belt 310 contacts the multiple sets of conveying rollers 35. By synchronously adjusting the position of the multiple sets of conveying rollers 35, it can be used to convey materials of different thicknesses, so that the upper and lower traction belts 310 can make good contact with the materials and traction and convey them through friction.

[0025] Furthermore, the line connecting the driven roller 9 and the drive roller 37 is always located between the lines connecting the axes of the upper and lower sets of conveyor rollers 35 (e.g., Figure 4 (as shown), so that the upper or lower conveyor roller 35 will not lose contact with the traction belt 310.

[0026] Furthermore, the dispensing mechanism 2 includes a liquid storage tank and a delivery pump. The output end of the delivery pump is connected to the delivery pipe 7, and the input end of the delivery pump is connected to the liquid storage tank. A compatibilizer is provided inside the liquid storage tank, and the compatibilizer is delivered to the bonding part of the composite material by the delivery pump.

[0027] The implementation principle of this embodiment is as follows: carbon fiber bundles and molten resin enter the centralized channel 8 through the feed pipe 4 for initial mixing, and then flow into the extrusion channel 9. During this process, the glue injection mechanism 2 injects a quantitative compatibilizer solution into the extrusion channel 9 through the glue injection pipe 6. The high-pressure shear environment in the channel forces the compatibilizer to diffuse to the fiber-resin interface, promoting the chemical coupling reaction. After the interface-strengthened composite material is extruded from the discharge pipe 5, it is clamped and conveyed by the traction belt 310 of the traction device 3. The drive motor 36 drives the traction belt 310 to operate through the drive roller 37. The telescopic cylinder 32 adjusts the spacing of the conveying rollers 35 according to the material thickness to ensure that the traction force is evenly distributed, and finally obtains a composite material product with significantly improved interface bonding strength.

[0028] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A curing device for enhancing the compatibility of carbon fiber thermoplastic composites, comprising an extrusion die (1), an injection mechanism (2), and a traction device (3), characterized in that: The front side of the extrusion mold (1) is provided with multiple sets of feed pipes (4), the rear side of the extrusion mold (1) is provided with a discharge pipe (5), the extrusion mold (1) is connected with a glue injection pipe (6), the side of the glue injection mechanism (2) is connected with a conveying pipe (7), one end of the conveying pipe (7) is connected to the top end of the glue injection pipe (6), the inside of the extrusion mold (1) is provided with multiple sets of centralized channels (8) connected to the feed pipes (4), the inside of the extrusion mold (1) is also provided with an extrusion channel (9) connected to multiple sets of centralized channels (8), one end of the extrusion channel (9) is connected to the discharge pipe (5), and the bottom end of the extrusion channel (9) is connected to the glue injection pipe (6).

2. The curing device for enhancing the compatibility of carbon fiber thermoplastic composites according to claim 1, characterized in that: The traction device (3) includes a frame (31), a drive motor (36) is fixedly connected to one side of the frame (31), a drive roller (37) is fixedly connected to the output shaft of the drive motor (36), a stabilizing shaft (38) is rotatably connected to the other side of the frame (31), a driven roller (39) is connected to one side of the stabilizing shaft (38), and a traction belt (310) is sleeved on the outside of the driven roller (39) and the drive roller (37).

3. The curing device for enhancing the compatibility of carbon fiber thermoplastic composites according to claim 2, characterized in that: The top and bottom of the stand (31) are fixedly connected with telescopic cylinders (32), and lifting frames (33) are fixedly connected on the telescopic shafts of the two sets of telescopic cylinders (32). Multiple sets of rotating shafts (34) are arranged in pairs on the lifting frames (33), and conveying rollers (35) are coaxially arranged on each set of rotating shafts (34).

4. The curing device for enhancing the compatibility of carbon fiber thermoplastic composites according to claim 3, characterized in that: The line connecting the axis of the driven roller (39) and the axis of the driving roller (37) is always located between the axis connecting the upper and lower sets of conveying rollers (35).

5. The curing device for enhancing the compatibility of carbon fiber thermoplastic composites according to claim 1, characterized in that: The dispensing mechanism (2) includes a liquid storage tank and a delivery pump. The output end of the delivery pump is connected to the delivery pipe (7), and the input end of the delivery pump is connected to the liquid storage tank. A compatibilizer is provided inside the liquid storage tank.

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