Microwave assisted rapid solidification apparatus for impregnating graphite equipment

Abstract

The utility model relates to dip graphite equipment microwave auxiliary quick solidification device belongs to microwave heating solidification technical field, including jar body, the movable joint has the sealing cover at jar body top, the inner wall fixed connection of sealing cover has microwave generator, jar body vertical side wall inside embeds the heating wire, the inside bottom wall of jar body is provided with rotation and lifting assembly. This dip graphite equipment microwave auxiliary quick solidification device cooperates through microwave and electric heating mixed heating and rotation and lifting assembly, realized the quick even solidification of dip graphite work piece, microwave generator provides from inside to outside the body heating, makes the resin quick crosslinking polymerization, greatly shortens the solidification period, the embedded electric heating wire maintains the uniform high temperature environment in the jar, effectively prevents the surface condensation and assists the surface layer solidification, and the combination of both eliminates the "shell effect" and thermal stress crack problem of traditional technology completely.

Description

Technical Field

[0001] This utility model relates to the field of microwave heating and curing technology, specifically to a microwave-assisted rapid curing device for impregnated graphite equipment. Background Technology

[0002] Microwave curing is a process that uses 0.3-300 GHz microwave electromagnetic waves to transform liquid resin into a solid state, falling under the category of composite material molding processes. Its principle is based on the internal frictional heat generated by the high-frequency motion of dipole molecules induced by microwaves, combining selective heating and volumetric heating characteristics to achieve rapid and uniform curing.

[0003] Traditional curing methods primarily employ electric heating drying ovens or vacuum ovens for thermosetting. This method relies on heat conduction and convection to heat the workpiece from the outside in, which has significant limitations: First, the heating rate is slow, energy consumption is high, and production efficiency is low; second, because graphite itself is an excellent thermal conductor while resin has poor thermal conductivity, the outside-to-inside heat transfer method easily leads to the resin on the outer surface of the workpiece curing first while the inside remains uncured, forming a "shell effect." This not only affects the consistency of curing quality but may also generate internal stress, causing cracks or deformation in the product, making it difficult to guarantee the yield. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a microwave-assisted rapid curing device for impregnated graphite equipment, which has the advantages of uniform and efficient heating, good curing quality, and convenient operation, and solves the problems of slow heating speed and uneven heating in traditional thermosetting methods.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a microwave-assisted rapid curing device for impregnating graphite, comprising a tank, a sealing cover movably connected to the top of the tank, a microwave generator fixedly connected to the inner wall of the sealing cover, an electric heating wire embedded in the vertical side wall of the tank, and a rotating lifting assembly provided on the bottom wall of the tank.

[0006] The rotary lifting assembly includes a servo motor fixedly connected to the bottom of the tank. The output shaft of the servo motor is movably connected to a conveyor belt. A turntable is movably connected to the end of the conveyor belt away from the servo motor. A support slide rod is fixedly connected to the bottom of the turntable. A matching circular groove is formed on the contact surface between the tank and the support slide rod. The support slide rod is slidably connected to the tank. A cylinder is fixedly connected to the bottom of the tank. A telescopic column is fixedly connected to the output shaft of the cylinder. The telescopic column passes through the turntable and is rotatably connected to a ring. A placement truncated cone is fixedly connected to the end of the ring away from the telescopic column. Telescopic rods are fixedly connected to both ends of the top of the turntable at the left and right ends of the telescopic column. The ends of the two telescopic rods away from the turntable are fixedly connected to the placement truncated cone. A limit hollow column is fixedly connected to the top of the placement truncated cone.

[0007] Furthermore, a rotating lug is fixedly connected to the top of the sealing cap, a support block is fixedly connected to the left side of the tank, an electric telescopic rod is movably connected to the end of the support block away from the tank, and the end of the electric telescopic rod away from the support block is movably connected to the rotating lug.

[0008] Furthermore, a vent pipe is fixedly connected to the top of the sealing cap, the vent pipe penetrates the sealing cap, and a thermometer is fixedly connected to the top of the sealing cap on the right side of the vent pipe, the thermometer penetrates the sealing cap and extends into the tank.

[0009] Furthermore, the inner wall of the tank is made of metal, and the materials of the turntable, telescopic column, telescopic rod, placement frustum, and limiting hollow column inside the tank are all microwave resistant.

[0010] Furthermore, a frame is movably connected to the top of the placed truncated cone, and hooks are fixedly connected to both the left and right sides of the frame.

[0011] Furthermore, the number of the support slide rods is three, which are evenly distributed on the bottom edge of the turntable.

[0012] Furthermore, there are several electric heating wires, which are evenly distributed in a ring around the inner wall of the tank.

[0013] Furthermore, a sealing ring is fixedly embedded at the bottom of the sealing cover, and a matching groove is formed on the contact surface between the sealing ring and the sealing cover.

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

[0015] 1. This microwave-assisted rapid curing device for impregnated graphite achieves rapid and uniform curing of impregnated graphite workpieces through the synergistic effect of microwave and electrothermal hybrid heating and a rotating lifting assembly. The microwave generator provides bulk heating from the inside out, enabling rapid cross-linking and polymerization of the resin, greatly shortening the curing cycle; the embedded electric heating wire maintains a uniform high-temperature environment inside the tank, effectively preventing surface condensation and assisting in surface curing. The combination of these two elements completely eliminates the "shell effect" and thermal stress cracking problems of traditional processes.

[0016] 2. The microwave-assisted rapid curing device for impregnated graphite uses a rotating lifting component driven by a servo motor to rotate the workpiece, ensuring that all surfaces of the workpiece are exposed to the microwave field. This solves the problems of blind spots and uneven field strength associated with single microwave heating. The cylinder-driven lifting function enables convenient switching between the curing position and the storage / retrieval position of the workpiece. The limiting hollow column ensures accurate workpiece positioning. The overall device significantly improves curing quality, production efficiency, and ease of operation. Attached Figure Description

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

[0018] Figure 2 The structure of this utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a schematic diagram of the turntable structure of this utility model.

[0020] In the diagram: 1. Tank body; 2. Support block; 3. Electric telescopic rod; 4. Rotary lug; 5. Sealing cap; 51. Sealing ring; 6. Microwave generator; 7. Vent pipe; 8. Thermometer; 9. Frame; 10. Hanging lug; 11. Limiting hollow column; 12. Electric heating wire; 13. Placement truncated cone; 14. Conveyor belt; 15. Servo motor; 20. Turntable; 22. Telescopic rod; 23. Telescopic column; 24. Ring; 25. Cylinder; 26. Support slide rod; 27. Circular groove. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-3 The microwave-assisted rapid curing device for impregnated graphite in this embodiment includes a tank 1, a sealing cover 5 movably connected to the top of the tank 1, a microwave generator 6 fixedly connected to the inner wall of the sealing cover 5, an electric heating wire 12 embedded in the vertical side wall of the tank 1, and several electric heating wires 12 evenly distributed in a ring around the inner side wall of the tank 1. A rotating lifting assembly is provided on the bottom wall of the tank 1.

[0023] It should be noted that the tank body 1, as the core cavity of the entire device, has a metal inner wall that can effectively reflect microwave energy inside, ensuring that the workpiece is heated efficiently and evenly. The sealing cover 5 is used to open and close the tank body 1 to form a sealed space. The sealing ring 51 is a key component to ensure the sealing of the tank body 1, preventing heat loss and microwave energy leakage. The electric heating wire 12 provides auxiliary heating to prevent uneven heating of the workpiece surface.

[0024] The rotary lifting assembly includes a servo motor 15 fixedly connected to the bottom of the tank 1. The output shaft of the servo motor 15 is movably connected to a conveyor belt 14. A turntable 20 is movably connected to the end of the conveyor belt 14 furthest from the servo motor 15. Three support slide rods 26 are fixedly connected to the bottom of the turntable 20, evenly distributed along its bottom edge. A matching circular groove 27 is provided on the contact surface between the tank 1 and the support slide rods 26. The support slide rods 26 are slidably connected to the tank 1. A cylinder 25 is fixedly connected to the bottom of the tank 1. A telescopic column 23 is fixedly connected to the output shaft of the cylinder 25, penetrating the turntable 20. A ring 24 is rotatably connected to the turntable 20. The end of the ring 24 away from the telescopic column 23 is fixedly connected to a placement truncated cone 13. Telescopic rods 22 are fixedly connected to the top of the turntable 20 at both ends of the telescopic column 23. The ends of the two telescopic rods 22 away from the turntable 20 are fixedly connected to the placement truncated cone 13. A frame 9 is movably connected to the top of the placement truncated cone 13. Lugs 10 are fixedly connected to the left and right sides of the frame 9. A limiting hollow column 11 is fixedly connected to the top of the placement truncated cone 13. The inner wall of the tank 1 is metal. The materials of the turntable 20, telescopic column 23, telescopic rods 22, placement truncated cone 13 and limiting hollow column 11 inside the tank 1 are all microwave resistant.

[0025] It should be noted that the starting cylinder 25 drives the telescopic column 23 to rise, raising the placement platform 13 to a high position for easy loading and unloading of workpieces; the frame 9 containing the workpiece is hoisted onto the placement platform 13 via the hanging lug 10 and positioned and fixed by the limiting hollow column 11; then the cylinder 25 drives the telescopic column 23 to descend, dropping the workpiece to the curing station in the center of the tank; after the tank is sealed, the servo motor 15 is started synchronously, driving the turntable 20 to rotate via the conveyor belt 14, which in turn drives the placement platform 13 and the workpiece to rotate at a uniform speed via the telescopic rod 22, while the support slide rod 26 slides along the circular groove 27 to provide stable support; during the workpiece rotation, the microwave generator 6 and the electric heating wire 12 work together to heat and complete the curing.

[0026] A rotating lug 4 is fixedly connected to the top of the sealing cap 5. A support block 2 is fixedly connected to the left side of the tank body 1. An electric telescopic rod 3 is movably connected to the end of the support block 2 away from the tank body 1. The end of the electric telescopic rod 3 away from the support block 2 is movably connected to the rotating lug 4. A sealing ring 51 is fixedly embedded at the bottom of the sealing cap 5. A matching groove is opened on the contact surface between the sealing ring 51 and the sealing cap 5. A vent pipe 7 is fixedly connected to the top of the sealing cap 5. The vent pipe 7 penetrates the sealing cap 5. A thermometer 8 is fixedly connected to the right side of the vent pipe 7 at the top of the sealing cap 5. The thermometer 8 penetrates the sealing cap 5 and extends into the tank body 1.

[0027] It should be noted that by controlling the retraction of the electric telescopic rod 3, the rotating ear 4 is pulled to rotate the sealing cover 5 around the connection point and open it, exposing the can opening for easy loading and unloading of the workpiece; after the workpiece is loaded, the electric telescopic rod 3 is controlled to extend and push the sealing cover 5 to close, so that the bottom sealing ring 51 presses against the opening of the can body 1 to form a seal; during the curing process, the temperature change inside the can is monitored in real time by the thermometer 8 that penetrates the sealing cover 5, and the curing environment is optimized by evacuating the vacuum or introducing protective gas through the vent pipe 7; after the work is completed, the normal pressure inside the can can be restored through the vent pipe 7.

[0028] All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0029] The working principle of the above embodiments is as follows:

[0030] (1) The sealing cover 5 is opened by controlling the retraction of the electric telescopic rod 3. Then, the cylinder 25 is activated to raise the placement platform 13 to a higher position. The frame 9 containing the workpiece is hoisted onto the placement platform 13 by the hanging lug 10 and positioned by the limiting hollow column 11. After loading, the cylinder 25 lifts the workpiece to the curing position, and the electric telescopic rod 3 pushes the sealing cover 5 to close, so that the sealing ring 51 is pressed and sealed. During the curing process, the servo motor 15 drives the turntable 20 to rotate through the conveyor belt 14, so that the workpiece rotates at a uniform speed under the stable support of the support slide rod 26. At the same time, the microwave generator 6 and the electric heating wire 12 work together to uniformly heat the workpiece from the inside out.

[0031] (2) The temperature inside the tank is monitored in real time by thermometer 8 throughout the curing process, and the curing environment is optimized by evacuating the tank or introducing protective gas through vent pipe 7. After the work is completed, the pressure is restored to normal through vent pipe 7, and the sealed cover 5 is opened in sequence and the raised and placed truncated cone 13 is raised to take out the finished product. This device effectively solves the problems of uneven heating and low efficiency of traditional curing methods through the synergistic effect of rotation lifting and microwave heat conduction.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] 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.

Claims

1. A microwave-assisted rapid curing device for impregnated graphite, comprising a tank (1), characterized in that: The top of the tank (1) is movably connected to a sealing cover (5), and a microwave generator (6) is fixedly connected to the inner wall of the sealing cover (5). An electric heating wire (12) is embedded in the vertical side wall of the tank (1), and a rotating lifting assembly is provided on the bottom wall of the tank (1). The rotary lifting assembly includes a servo motor (15) fixedly connected to the bottom of the tank (1). The output shaft of the servo motor (15) is movably connected to a conveyor belt (14). A turntable (20) is movably connected to one end of the conveyor belt (14) away from the servo motor (15). A support slide rod (26) is fixedly connected to the bottom of the turntable (20). A matching circular groove (27) is provided on the contact surface between the tank (1) and the support slide rod (26). The support slide rod (26) is slidably connected to the tank (1). A cylinder (25) is fixedly connected to the bottom of the tank (1). The output shaft of the cylinder (25) is fixedly connected to a telescopic column (23). The telescopic column (23) passes through the turntable (20) and is rotatably connected to a ring (24). The end of the ring (24) away from the telescopic column (23) is fixedly connected to a placement truncated cone (13). The top of the turntable (20) is fixedly connected to both the left and right ends of the telescopic column (23). The ends of the two telescopic rods (22) away from the turntable (20) are fixedly connected to the placement truncated cone (13). The top of the placement truncated cone (13) is fixedly connected to a limiting hollow column (11).

2. The microwave-assisted rapid curing device for impregnated graphite equipment according to claim 1, characterized in that: The top of the sealing cap (5) is fixedly connected to a rotating lug (4), and the left side of the tank body (1) is fixedly connected to a support block (2). The end of the support block (2) away from the tank body (1) is movably connected to an electric telescopic rod (3), and the end of the electric telescopic rod (3) away from the support block (2) is movably connected to the rotating lug (4).

3. The microwave-assisted rapid curing device for impregnated graphite equipment according to claim 1, characterized in that: A vent pipe (7) is fixedly connected to the top of the sealing cover (5). The vent pipe (7) penetrates the sealing cover (5). A thermometer (8) is fixedly connected to the top of the sealing cover (5) on the right side of the vent pipe (7). The thermometer (8) penetrates the sealing cover (5) and extends into the tank body (1).

4. The microwave-assisted rapid curing device for impregnated graphite equipment according to claim 1, characterized in that: The inner wall of the tank (1) is made of metal, and the materials of the turntable (20), telescopic column (23), telescopic rod (22), placement truncated cone (13) and limiting hollow column (11) inside the tank (1) are all microwave resistant.

5. The microwave-assisted rapid curing device for impregnated graphite equipment according to claim 1, characterized in that: The top of the placement truncated cone (13) is movably connected to a frame (9), and the left and right sides of the frame (9) are fixedly connected to hanging ears (10).

6. The microwave-assisted rapid curing device for impregnated graphite equipment according to claim 1, characterized in that: The number of the support slide rods (26) is three, which are evenly distributed on the bottom edge of the turntable (20).

7. The microwave-assisted rapid curing device for impregnated graphite equipment according to claim 1, characterized in that: There are several electric heating wires (12), which are evenly distributed in a ring around the inner wall of the tank (1).

8. The microwave-assisted rapid curing device for impregnated graphite equipment according to claim 1, characterized in that: A sealing ring (51) is fixedly embedded at the bottom of the sealing cover (5), and a matching groove is provided on the contact surface between the sealing ring (51) and the sealing cover (5).

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