Short-time gel thermosetting resin casting device

Abstract

The utility model relates to a short-time gel thermosetting resin casting device which comprises a reaction kettle, a control valve, a telescopic flow guide pipe and a casting mechanism, a servo motor is arranged in the center of the top of the reaction kettle, a reaction pot is arranged in the reaction kettle, and a cavity between the inner wall of the reaction kettle and the reaction pot is a reaction furnace; a feeding hole is formed in the left side of the top center of the reaction kettle. The device is reasonable in structural arrangement and convenient to use, needed resin is prepared through the reaction kettle, the resin flows to the casting mechanism through the control valve and the telescopic flow guide pipe, then the resin flows to the mold at a constant speed through the speed control valve, stable casting is achieved, and the problems that an existing device cannot control the temperature and gelation of the resin in the process from preparation to casting, and the production cost is low are solved. Pollution is eliminated from the source, the heat and humidity resistance of the product is remarkably improved, and meanwhile the technical problems of operation risks, poor process repeatability, large product performance fluctuation and the like existing in traditional manual casting are solved.

Description

Technical Field

[0001] This utility model relates to a casting device, specifically a short-time gel thermosetting resin casting device. Background Technology

[0002] Resins are generally classified into thermoplastic resins and thermosetting resins. Both have unique advantages and can be applied in different fields. However, compared with thermoplastic resins, thermosetting resins have a wider range of applications and a larger market demand, accounting for about 80% of the entire resin market. This is because it forms a three-dimensional cross-linked network structure after curing, does not soften or melt when heated, can withstand high temperatures above 200°C for a long time, and has other excellent comprehensive properties. The molding of thermosetting resins cannot be separated from curing agents, so its preparation involves mixing two or more components. Based on this, solvent blending and melt blending methods are currently the main methods for preparation.

[0003] Solvent blending is a method that improves the performance or processability of resin by mixing solvent with it and utilizing the properties of the solvent. It involves mixing resin powder with a solvent to form a homogeneous solution, and then evaporating the solvent to obtain the desired resin material. Specific steps include: mixing: mixing the resin powder with an appropriate amount of solvent to ensure complete dissolution of the resin; stirring: stirring to homogenize the solution and prevent the formation of particles or clumps; and evaporation: evaporating the solvent under appropriate conditions to obtain a pure resin material. The advantage of this method is its versatility. However, the solvent evaporates during curing, which is not only harmful to the environment but may also pose a health hazard. Furthermore, solvent evaporation is an integral part of the curing process, and prolonged curing times may delay project progress, increase production costs, and significantly increase the likelihood of product defects. Melt blending involves directly melting and mixing the resin. Compared to solvent blending, it eliminates the need for solvents, thus avoiding the drawbacks associated with solvent use and simplifying the process. However, it places higher demands on the resin's processability, typically requiring its melting point to be lower than its curing temperature. For example, bismaleimide has an extremely short processing window, usually starting to gel after complete melting. During casting, the temperature drop can lead to rapid solidification. Therefore, precise temperature and viscosity monitoring are crucial from the preparation to the casting process of this type of resin.

[0004] Therefore, those skilled in the art have provided a short-time gel thermosetting resin casting apparatus to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a short-time gel thermosetting resin casting device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A short-time gel thermosetting resin casting device includes a reaction vessel, a control valve, a retractable guide pipe, and a casting mechanism. A servo motor is located at the center of the top of the reaction vessel. A reaction pot is located inside the reaction vessel, and the cavity between the inner wall of the reaction vessel and the reaction pot serves as a reaction furnace. A feed inlet is located on the left side of the center of the top of the reaction vessel, and an exhaust port and a heat medium inlet are located sequentially on the right side of the center of the top of the reaction vessel. The exhaust port and heat medium inlet facilitate the discharge of gases from the reaction pot and reaction furnace. The output end of the servo motor is connected to a stirring rod, which penetrates through a cover plate into the interior of the reaction pot. A heating tube is installed inside the reaction furnace, and a temperature detector is located below the heating tube for temperature monitoring. A heat medium outlet is located at the bottom of the reaction vessel, allowing for the replacement of different heat media under different operating conditions. A temperature control system is located on the left side of the reaction vessel, allowing the setting of the desired temperature. A cover plate is located at the top of the reaction vessel to prevent dust ingress and heat loss, and an observation window is located on the surface to observe the reaction process. A support frame is located at the bottom of the reaction vessel, and a support base is located at the bottom of the support frame for supporting the reaction vessel.

[0008] As a further embodiment of this utility model: a control valve is provided at the bottom of the reaction vessel, the control valve is connected to the inner tube to facilitate resin outflow, and a control terminal is provided outside the reaction vessel, the control terminal is connected to the control valve, and the control terminal controls the rate of resin outflow from the reaction vessel through the control valve.

[0009] As a further improvement of this utility model: an insulation pipe is provided outside the inner tube, and the insulation pipe is connected to the reaction furnace to facilitate the heat medium to keep the resin in the inner tube warm. The inner tube is connected to a telescopic guide pipe to facilitate viscosity control of the resin flowing to the casting mechanism. The telescopic guide pipe is connected to the casting mechanism to facilitate adjustment of the flow direction during casting.

[0010] As a further improvement of this utility model: a speed control valve is provided at the top of the casting mechanism, and a handle is provided on the outer surface to facilitate the stabilization of the casting mechanism. The lower end of the speed control valve is connected to a cross-shaped rod, which penetrates into the interior of the casting mechanism. Buffer holes are provided on both sides of the cross-shaped rod to facilitate the control of the resin flow speed to the outlet. A groove is provided at the bottom of the casting mechanism to facilitate the insertion of the cross-shaped rod to stop the casting process. The groove is connected to the outlet to facilitate the resin flow to the casting mold.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model has a reasonable structure and is easy to use. The required resin is prepared in a reaction vessel, and the resin is directed to the casting mechanism through a control valve and a telescopic guide pipe. Then, the resin is directed to the mold at a constant speed through a speed control valve, so as to achieve stable casting. It solves the problem that the existing device cannot control the temperature and gelation of the resin from preparation to casting. It eliminates pollution from the source and significantly improves the moisture and heat resistance of the product. At the same time, it solves the technical pain points of traditional manual casting, such as operational risks, poor process repeatability, and large fluctuations in product performance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a short-time gel thermosetting resin casting device.

[0014] Figure 2 This is a cross-sectional view of the reaction vessel in a short-time gel thermosetting resin casting apparatus.

[0015] Figure 3 This is a front sectional view of the casting mechanism in a short-time gel thermosetting resin casting apparatus.

[0016] In the diagram: 1. Reactor; 2. Observation window; 3. Temperature control system; 4. Control terminal; 5. Support frame; 6. Support base; 7. Servo motor; 8. Feed inlet; 9. Exhaust port; 10. Heat medium inlet; 11. Cover plate; 12. Heat medium outlet; 13. Insulated conduit; 14. Telescopic guide pipe; 15. Handle; 16. Speed ​​control valve; 17. Casting mechanism; 18. Furnace; 19. Heating tube; 20. Reactor; 21. Temperature detector; 22. Stirring rod; 23. Control valve; 24. Insulated pipe; 25. Inner tube; 26. Cross rod; 27. Buffer hole; 28. Groove; 29. ​​Discharge port. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-3In this embodiment of the invention, a short-time gel thermosetting resin casting device includes a reaction vessel 1, a control valve 23, a retractable guide pipe 14, and a casting mechanism 17. A servo motor 7 is located at the center of the top of the reaction vessel 1. A reaction pot 20 is located inside the reaction vessel 1, and the cavity between the inner wall of the reaction vessel 1 and the reaction pot 20 is a reaction furnace 18. A feed inlet 8 is located on the left side of the center of the top of the reaction vessel 1, and an exhaust port 9 and a heat medium inlet 10 are located sequentially on the right side of the center of the top of the reaction vessel 1. The exhaust port 9 and the heat medium inlet 10 facilitate the discharge of gas from the reaction pot 20 and the reaction furnace 18. The servo motor... The output end of 7 is connected to the stirring rod 22, which passes through the cover plate 11 to the inside of the reaction vessel 20. The reactor 18 is equipped with a heating tube 19, and a temperature detector 21 is located below the heating tube 19 for easy temperature monitoring. The bottom of the reaction vessel 1 is equipped with a heat medium outlet 12 for easy replacement of different heat media under different operating conditions. The left side of the reaction vessel 1 is equipped with a temperature control system 3, which can set the required temperature. The upper end of the reaction vessel 1 is equipped with a cover plate 11 to prevent dust from entering and heat loss. The surface is equipped with an observation window 2 to observe the reaction process. The lower end of the reaction vessel 1 is equipped with a support frame 5, and the bottom of the support frame 5 is equipped with a support base 6 for easy support of the reaction vessel 1.

[0019] The bottom of the reaction vessel 20 is provided with a control valve 23, which is connected to the inner tube 25 to facilitate resin outflow. The outside of the reaction vessel 1 is provided with a control terminal 4, which is connected to the control valve 23. The control terminal 4 controls the rate at which the resin flows out of the reaction vessel 20 through the control valve 23.

[0020] The inner tube 25 is provided with an insulation pipe 24 on the outside. The insulation pipe 24 is connected to the reactor 18 to facilitate the heat medium to keep the resin in the inner tube 25 warm. The inner tube 25 is connected to a telescopic guide pipe 14 to facilitate viscosity control of the resin flowing to the casting mechanism 17. The telescopic guide pipe 14 is connected to the casting mechanism 17 to facilitate adjustment of the flow direction during casting.

[0021] A speed control valve 16 is provided at the top of the casting mechanism 17, and a handle 15 is provided on the outer surface to facilitate the stabilization of the casting mechanism 17. The lower end of the speed control valve 16 is connected to a cross rod 26, which penetrates into the interior of the casting mechanism 17. Buffer holes 27 are provided on both sides of the cross rod 26 to facilitate the control of the resin flow speed to the outlet 29. A groove 28 is provided at the bottom of the casting mechanism 17 to facilitate the insertion of the cross rod 26 to stop the casting process. The groove 28 is connected to the outlet 29 to facilitate the resin flow to the casting mold.

[0022] The working principle of this utility model is as follows:

[0023] When the device is working, the chemical materials prepared in the specified proportions are added to the reaction vessel 20 through the feed port 8, and the heat medium is injected into the reaction furnace 18 through the heat medium inlet 10. The temperature is controlled by the heating tube 19 in the reaction furnace 18, and the chemical materials are fully reacted by the servo motor 7 and the stirring rod 22. After the resin in the reaction vessel 20 is prepared, the control valve 23 is opened through the control terminal 4, so that the resin flows from the reaction vessel 20 through the inner tube 25 and the retractable guide tube 14 into the casting mechanism 17, then through the buffer hole 27 into the groove 28, then through the groove 28 into the discharge port 29, and finally into the mold. During this process, the position of the speed control valve 16 can be adjusted according to the actual use requirements to control the casting speed or stop the casting behavior.

[0024] 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 short-time gel thermosetting resin casting apparatus comprising a reaction vessel (1), a control valve (23), a telescopic flow guide (14) and a casting mechanism (17), characterized in that, A servo motor (7) is provided at the top center of the reactor (1). A reaction vessel (20) is provided inside the reactor (1). The cavity between the inner wall of the reactor (1) and the reaction vessel (20) is a reactor (18). A feed inlet (8) is provided on the left side of the top center of the reactor (1). An exhaust port (9) and a heat medium inlet (10) are provided on the right side of the top center of the reactor (1). The output end of the servo motor (7) is connected to a stirring rod (22). The stirring rod (22) passes through the cover plate (11) to the inside of the reaction vessel (20). A heating tube (19) is provided inside the reactor (18). A temperature detector (21) is provided below the heating tube (19). A heat medium outlet (12) is provided at the bottom of the reactor (1).

2. A short-time gel thermosetting resin casting device according to claim 1, wherein The reactor (1) is equipped with a temperature control system (3) on the left side, a cover plate (11) on the upper end of the reactor (1), an observation window (2) on the surface of the reactor (1) to observe the reaction process, a support frame (5) on the lower end of the reactor (1), and a support base (6) at the bottom of the support frame (5).

3. The short-time gel thermosetting resin casting device according to claim 1, characterized by The bottom of the reaction vessel (20) is equipped with a control valve (23), which is connected to the inner tube (25). The outside of the reaction vessel (1) is equipped with a control terminal (4), which is connected to the control valve (23).

4. The short-time gel thermosetting resin casting device according to claim 3, wherein The inner tube (25) is provided with an insulation pipe (24) on the outside. The insulation pipe (24) is connected to the reactor (18). The inner tube (25) is connected to a telescopic guide pipe (14). The telescopic guide pipe (14) is connected to the casting mechanism (17).

5. A short-time gelcasting apparatus for thermosetting resin according to claim 4, wherein The casting mechanism (17) is equipped with a speed control valve (16) at the top, and a handle (15) is provided on the outer surface of the casting mechanism (17). The lower end of the speed control valve (16) is connected to a cross rod (26), which extends through the casting mechanism (17). Buffer holes (27) are provided on both sides of the cross rod (26).

6. A short-time gelcasting apparatus for thermosetting resin according to claim 5, wherein The casting mechanism (17) has a groove (28) at the bottom, and the groove (28) is connected to the discharge port (29).

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