RTM mold

Abstract

The utility model provides an RTM (Resin Transfer Molding) mold. The RTM mold comprises an upper mold, a lower mold, a feeding mechanism and a lifting mechanism; the upper mold and the lower mold are matched to form a mold cavity, and the upper mold is provided with a glue injection port; the feeding mechanism comprises a feeding container, a stirring piece, a temperature control piece and a pressurizing piece; the feeding container is provided with a feeding port, a discharging port, a pressurizing port and a pressure relief port, the discharging port is connected with the glue injection port of the upper mold, and the pressurizing port is connected with the pressurizing piece; the stirring piece is arranged in an inner cavity of the feeding container; the temperature control part is used for controlling the temperature of feed liquid in the feeding container; and the lifting mechanism comprises an upper die lifting mechanism and a lower die lifting mechanism which are respectively used for driving the upper die and the lower die to lift. The RTM mold provided by the utility model is simple in structure, low in operation difficulty and capable of improving the quality stability of products, improving the production efficiency and realizing continuous production.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an RTM mold. Background Art

[0002] Polycycloolefin resin is a high-performance thermoplastic with excellent mechanical properties, heat resistance, chemical resistance and electrical insulation. It is widely used in the automotive, electronics, aerospace and other fields. However, the preparation process of polycycloolefin resin is accompanied by complex chemical changes and temperature changes, and usually requires the use of specific material ratios, temperatures and pressures, which places extremely high demands on equipment. The preparation methods used by traditional resins, such as injection molding and extrusion molding, although they can achieve large-scale production, the material ratios during the mixing process are not accurate, and the pressure and temperature during the molding process are difficult to accurately control, resulting in unstable product quality. Among them, inaccurate material ratios will lead to insufficient chemical reactivity of polycycloolefin resins and poor polymerization effects.

[0003] A common solution to the above problems is to use reaction injection molding (RTM) technology. RTM is a low-pressure molding technology that injects liquid resin into a pre-prepared mold and then solidifies it at a certain temperature and pressure. However, the use of traditional RTM equipment has the following problems: 1) The material ratio is not accurate; 2) The pressure and temperature are difficult to control accurately, resulting in unstable product quality; 3) The existing RTM equipment has a complex structure and is difficult to operate, which is not conducive to large-scale production; 4) The existing RTM equipment cannot achieve continuous production and has low production efficiency; 5) When the existing RTM equipment processes fiber-reinforced composite materials, the laying and fixing of fiber materials is more difficult, which affects the quality and performance of the product. Therefore, it is urgent to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an RTM mold. The RTM mold provided by the utility model, by providing a feed container, a stirring part, a temperature control part and a pressurizing part, makes the material ratio accurate, the pressure and temperature can be precisely controlled, thereby improving the quality stability of the product, and can also improve the production efficiency and realize continuous production; by providing an upper mold lifting mechanism and a lower mold lifting mechanism, it is possible to directly lay the fiber material in the mold cavity, which is simple and convenient, and can improve the quality and performance of the product; the RTM mold provided by the utility model has a simple structure, low difficulty in operation, and is conducive to large-scale production.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an RTM mold, which comprises an upper mold, a lower mold, a feeding mechanism and a lifting mechanism;

[0007] The upper mold and the lower mold cooperate to form a mold cavity, and the upper mold is provided with a glue injection port;

[0008] The feeding mechanism comprises a feeding container, a stirring element, a temperature control element and a pressurizing element; the feeding container is provided with a feeding port, a discharging port, a pressurizing port and a pressure relief port, the discharging port is connected to the injection port of the upper mold, and the pressurizing port is connected to the pressurizing element; the stirring element is arranged in the inner cavity of the feeding container; the temperature control element is used to control the temperature of the liquid in the feeding container;

[0009] The lifting mechanism comprises an upper die lifting mechanism and a lower die lifting mechanism, which are respectively used to drive the upper die and the lower die to lift and lower.

[0010] The utility model provides an RTM mold, which has the following advantages:

[0011] (1) The RTM mold includes a feeding mechanism, which includes a feeding container, a stirring element, a temperature control element and a pressurizing element. The feeding container and the stirring element in the inner cavity thereof can be used to stir and premix the feed liquid, thereby ensuring the accuracy of the feed liquid ratio and the uniformity of the mixing. At the same time, by setting the temperature control element, the temperature of the feed liquid in the feeding container can be controlled to store the feed liquid at a specific temperature, so that the premixed feed liquid can be stored for a long time, and the feed liquid ratio can be accurately controlled and the uniformity after mixing can be ensured. In addition, by setting the pressurizing element, the pressure of the feeding container can be controlled. The product quality can be regulated; and a pressurizing member is provided so that the liquid in the feed container can be injected into the mold cavity by pressurization until the mold cavity is filled or fully mixed with the fiber material in the mold cavity, which can speed up the liquid injection and improve the production efficiency. Then, the product can be taken out from the mold cavity after heating and curing and cooling, thereby realizing continuous production; therefore, under the joint action of the stirring member, the temperature control member and the pressurizing member, the material ratio can be accurate, and the pressure and temperature can be accurately controlled, thereby improving the quality stability of the product, and also improving the production efficiency and realizing continuous production;

[0012] (2) The RTM mold includes an upper mold lifting mechanism and a lower mold lifting mechanism. The upper mold lifting mechanism can drive the upper mold to move up and down, and the lower mold lifting mechanism can drive the lower mold to move up and down. Therefore, when processing fiber-reinforced composite materials, the upper mold and the lower mold can be temporarily separated and fixed by the lifting mechanism, and the operation space is reserved, so that the fiber material can be directly laid in the mold cavity, which is simple and convenient, and can improve the quality and performance of the product;

[0013] (3) The RTM mold provided by the utility model has a simple structure and low operating difficulty, which is conducive to large-scale production.

[0014] Preferably, the upper mold is also provided with a glue outlet, and the glue outlet is connected to a recovery mechanism for recovering the liquid.

[0015] Preferably, exhaust ports are provided at four corners of the upper mold and / or the lower mold.

[0016] Preferably, an independent first heating pipeline and a first cooling pipeline are arranged in the upper mold.

[0017] Preferably, an independent second heating pipeline and a second cooling pipeline are provided in the lower mold.

[0018] Preferably, the pressure relief port of the feed container is connected to the atmosphere through a pressure relief valve.

[0019] Preferably, the feed container is a double-layer jacket structure.

[0020] Preferably, the temperature control component comprises a mold temperature controller, and a medium pipeline of the mold temperature controller is connected to the interlayer of the feed container.

[0021] Preferably, the RTM mold further comprises an upper frame and a lower frame sequentially arranged from top to bottom; an upper mold base is arranged on the upper frame, and a groove is arranged on the bottom surface of the upper mold base; at least a part of the upper mold is fixedly arranged in the groove.

[0022] Preferably, the upper die lifting mechanism comprises a first hydraulic cylinder, a piston rod of the first hydraulic cylinder is fixedly connected to the bottom of the upper die base, and a base of the first hydraulic cylinder is connected to the top of the lower frame.

[0023] Preferably, the lower mold lifting mechanism includes a lifting platform and a second hydraulic cylinder connected in sequence from top to bottom; the lower mold is arranged on a side surface of the lifting platform away from the second hydraulic cylinder, and the lower mold is located below the upper mold.

[0024] Preferably, the RTM mold further comprises a flipping mechanism, which is connected to the upper mold and is used to flip the upper mold by 90°.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] The utility model provides an RTM mold, which has the following advantages:

[0027] (1) The RTM mold includes a feeding mechanism, which includes a feeding container, a stirring element, a temperature control element and a pressurizing element. The feeding container and the stirring element in the inner cavity thereof can be used to stir and premix the feed liquid, thereby ensuring the accuracy of the feed liquid ratio and the uniformity of the mixing. At the same time, by setting the temperature control element, the temperature of the feed liquid in the feeding container can be controlled to store the feed liquid at a specific temperature, so that the premixed feed liquid can be stored for a long time, and the feed liquid ratio can be accurately controlled and the uniformity after mixing can be ensured. In addition, by setting the pressurizing element, the pressure of the feeding container can be controlled. The product quality can be regulated; and a pressurizing member is provided so that the liquid in the feed container can be injected into the mold cavity by pressurization until the mold cavity is filled or fully mixed with the fiber material in the mold cavity, which can speed up the liquid injection and improve the production efficiency. Then, the product can be taken out from the mold cavity after heating and curing and cooling, thereby realizing continuous production; therefore, under the joint action of the stirring member, the temperature control member and the pressurizing member, the material ratio can be accurate, and the pressure and temperature can be accurately controlled, thereby improving the quality stability of the product, and also improving the production efficiency and realizing continuous production;

[0028] (2) The RTM mold includes an upper mold lifting mechanism and a lower mold lifting mechanism. The upper mold lifting mechanism can drive the upper mold to move up and down, and the lower mold lifting mechanism can drive the lower mold to move up and down. Therefore, when processing fiber-reinforced composite materials, the upper mold and the lower mold can be temporarily separated and fixed by the lifting mechanism, and the operation space is reserved, so that the fiber material can be directly laid in the mold cavity, which is simple and convenient, and can improve the quality and performance of the product;

[0029] (3) The RTM mold provided by the utility model has a simple structure and low operating difficulty, which is conducive to large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A partial structural schematic diagram of an RTM mold provided for a specific embodiment of the utility model;

[0031] Figure 2 A schematic cross-sectional view of an upper die provided for a specific embodiment of the utility model;

[0032] Figure 3 A schematic diagram of a first heating pipeline and a first cooling pipeline in an upper mold, and a second heating pipeline and a second cooling pipeline in a lower mold provided in a specific embodiment of the utility model;

[0033] Among them, 1-upper mold; 2-lower mold; 3-feeding container; 4-upper mold base; 5-first hydraulic cylinder; 6-lifting platform; 7-second hydraulic cylinder; 8-glue injection port; 9-upper mold exhaust port; 10-first heating pipeline; 11-first cooling pipeline; 12-second heating pipeline; 13-second cooling pipeline. DETAILED DESCRIPTION

[0034] It should be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc., are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0035] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0036] Those skilled in the art should understand that the present invention necessarily includes necessary pipelines, conventional valves and general pump equipment for realizing a complete process, but the above content does not constitute the main innovation of the present invention. Those skilled in the art can add layouts on their own based on the process flow and equipment structure selection, and the present invention does not make special requirements or specific limitations on this.

[0037] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0038] In a specific embodiment, the utility model provides an RTM mold, and a partial structure of the RTM mold is as follows: Figure 1 As shown, the RTM mold includes an upper mold 1, a lower mold 2, a feeding mechanism and a lifting mechanism;

[0039] The upper mold 1 and the lower mold 2 cooperate to form a mold cavity, and the upper mold 1 is provided with a glue injection port 8;

[0040] The feeding mechanism includes a feeding container 3, a stirring element, a temperature control element and a pressurizing element; the feeding container 3 is provided with a feeding port, a discharging port, a pressurizing port and a pressure relief port, the discharging port is connected to the injection port 8 of the upper mold 1, and the pressurizing port is connected to the pressurizing element; the stirring element is arranged in the inner cavity of the feeding container 3; the temperature control element is used to control the temperature of the liquid in the feeding container 3;

[0041] The lifting mechanism comprises an upper die 1 lifting mechanism and a lower die 2 lifting mechanism, which are respectively used to drive the upper die 1 and the lower die 2 to lift and lower.

[0042] The RTM mold provided by the utility model has the following advantages:

[0043] (1) The RTM mold includes a feeding mechanism, which includes a feeding container 3, a stirring element, a temperature control element and a pressurizing element. The feeding container 3 and the stirring element in its inner cavity can be used to stir and premix the feed liquid, thereby ensuring the accuracy of the feed liquid ratio and the uniformity of the mixing. At the same time, by setting the temperature control element, the temperature of the feed liquid in the feeding container 3 can be controlled to store the feed liquid at a specific temperature, so that the premixed feed liquid can be stored for a long time, and the feed liquid ratio can be accurately controlled to ensure the uniformity after mixing. In addition, by setting the pressurizing element, the pressure of the feeding container 3 can be controlled. , and then regulate the product quality; and a pressurizing member is provided, so that the material liquid in the feed container 3 can be injected into the mold cavity by pressurization until the mold cavity is filled or fully mixed with the fiber material in the mold cavity, which can speed up the injection and improve the production efficiency, and then the product can be taken out from the mold cavity after heating and curing and cooling, so as to realize continuous production; therefore, under the joint action of the stirring member, the temperature control member and the pressurizing member, the material ratio can be accurate, the pressure and temperature can be accurately controlled, so as to improve the quality stability of the product, and also improve the production efficiency and realize continuous production;

[0044] (2) The RTM mold includes an upper mold 1 lifting mechanism and a lower mold 2 lifting mechanism. The upper mold 1 lifting mechanism can drive the upper mold 1 to move up and down, and the lower mold 2 lifting mechanism can drive the lower mold 2 to move up and down. Therefore, when processing fiber-reinforced composite materials, the upper mold 1 and the lower mold 2 can be temporarily separated and fixed by the lifting mechanism, and the operation space can be reserved, so that the fiber material can be directly laid in the mold cavity, which is simple and convenient, and can improve the quality and performance of the product;

[0045] (3) The RTM mold provided by the utility model has a simple structure and low operating difficulty, which is conducive to large-scale production.

[0046] It should be noted that when the RTM mold provided by the utility model is used for production, fiber material may or may not be laid in the inner cavity of the mold.

[0047] Furthermore, the upper mold 1 and the lower mold 2 are made of metal.

[0048] Furthermore, the upper mold 1 is also provided with a glue outlet, and the glue outlet is connected to a recovery mechanism for recovering the liquid.

[0049] In the utility model, by arranging a glue outlet and a recovery mechanism connected to the glue outlet at the upper mold 1, the excess liquid can be effectively recovered, thus reducing resource waste and also reducing production costs.

[0050] Furthermore, the recovery mechanism comprises a conduit and a liquid recovery container which are connected in sequence, and one end of the conduit away from the liquid recovery container is connected to the glue outlet of the upper mold 1 .

[0051] Furthermore, the upper mold 1 and / or the lower mold 2 are provided with exhaust ports at four corners. The exhaust ports of the upper mold 1 are denoted as upper mold exhaust ports 9, and their positions are as follows: Figure 2 shown.

[0052] Furthermore, the upper mold 1 is provided with an independent first heating pipeline 10 and a first cooling pipeline 11, such as Figure 3 shown.

[0053] In the present invention, "independent" means that the first heating pipeline 10 and the first cooling pipeline 11 exist and operate independently, and are not the same pipeline. The same applies to the rest.

[0054] Furthermore, the lower mold 2 is provided with an independent second heating pipeline 12 and a second cooling pipeline 13, such as Figure 3 shown.

[0055] Traditional RTM equipment has low temperature control accuracy during the heating and cooling process, which may lead to unstable product performance.

[0056] The utility model arranges independent heating pipelines and cooling pipelines in the upper mold 1 and the lower mold 2. The heating pipelines and cooling pipelines operate independently, which can improve the temperature control accuracy during heating and cooling, accurately control the temperature in the mold cavity, and ensure stable product performance.

[0057] On the basis of the temperature control part of the feeding mechanism, independent heating pipelines and cooling pipelines are arranged in the upper mold 1 and the lower mold 2, which can further accurately control the temperature of the product production process and improve the stability of product quality.

[0058] Furthermore, a discharge valve is provided on the connecting pipeline between the discharge port of the feed container 3 and the glue injection port 8 of the upper mold 1 .

[0059] Furthermore, the pressure relief port of the feed container 3 is connected to the atmosphere through a pressure relief valve.

[0060] In the utility model, the pressure in the feed container 3 can be regulated by the pressurizing member and the pressure relief valve. If the pressure in the feed container 3 needs to be restored to a lower level after the feeding is completed, the pressure relief valve can be opened to release the pressure after the discharge valve is closed.

[0061] Furthermore, the feed container 3 is a double-layer jacket structure.

[0062] In the utility model, the feed container 3 is a double-layer jacket structure, which has the characteristics of heat preservation and pressure resistance.

[0063] Furthermore, the temperature control component includes a mold temperature controller, and a medium pipeline of the mold temperature controller is connected to the interlayer of the feed container 3 .

[0064] The medium material in the medium pipeline of the mold temperature controller is usually liquid. The medium material enters the interlayer through the medium pipeline and flows out of the interlayer, thereby realizing the temperature control of the feed liquid in the feed container 3.

[0065] Furthermore, the RTM mold also includes an upper frame and a lower frame arranged in sequence from top to bottom; an upper mold base 4 is arranged on the upper frame, and a groove is arranged on the bottom surface of the upper mold base 4; at least part of the upper mold 1 is fixedly arranged in the groove.

[0066] Furthermore, the portion of the upper die 1 located in the groove is fixedly connected to the upper die base 4 via a fixing member.

[0067] Furthermore, the upper die 1 lifting mechanism comprises a first hydraulic cylinder 5, a piston rod of the first hydraulic cylinder 5 is fixedly connected to the bottom of the upper die base 4, and a base of the first hydraulic cylinder 5 is connected to the top of the lower frame.

[0068] In the utility model, the first hydraulic cylinder 5 drives the upper die base 4 to move up and down, thereby driving the upper die 1 to move up and down.

[0069] Furthermore, the lifting mechanism of the lower mold 2 includes a lifting platform 6 and a second hydraulic cylinder 7 connected in sequence from top to bottom, the lower mold 2 is arranged on a side surface of the lifting platform 6 away from the second hydraulic cylinder 7, and the lower mold 2 is located below the upper mold 1.

[0070] Furthermore, the RTM mold further comprises a flipping mechanism, which is connected to the upper mold 1 and is used to flip the upper mold 1 by 90°.

[0071] In the utility model, a turning mechanism is provided to turn the upper mold 1 by 90 degrees, so that it is easier to lay fiber materials in the mold cavity and to take out the produced products. At the same time, it is also convenient to clean the inner cavity of the mold.

[0072] In another specific embodiment, the RTM mold provided by the utility model is used to prepare polycycloolefin resin, inorganic modified polycycloolefin resin or polycycloolefin resin composite material.

[0073] The RTM mold provided by the utility model is suitable for various polycycloolefin liquid systems. When liquid is injected into the mold cavity, it can be either a single resin liquid or a mixed resin liquid.

[0074] Example

[0075] This embodiment provides an RTM mold, which includes an upper frame, a lower frame, an upper mold 1, a lower mold 2, a feeding mechanism, a lifting mechanism, a flipping mechanism and a recovery mechanism for recovering liquid. Some structures are as follows Figure 1 As shown;

[0076] The upper frame and the lower frame are arranged in sequence from top to bottom, and an upper mold base 4 is arranged on the upper frame, and a groove is arranged on the bottom surface of the upper mold base 4, and part of the upper mold 1 is fixedly arranged in the groove; the length and width of the upper mold 1 are 550mm*550mm, and the length and width of the lower mold 2 are 550mm*550mm, and the lower mold 2 is located directly below the upper mold 1, and the upper mold 1 and the lower mold 2 cooperate to form a mold cavity; the upper mold 1 is provided with a glue injection port 8 and a glue outlet, and the glue injection port 8 is located at the center of the upper mold 1, and the glue outlet is connected to the recovery mechanism; exhaust ports are arranged at the four corners of the upper mold 1 and the lower mold 2, and the position of the upper mold exhaust port 9 corresponding to the upper mold 1 is as shown in FIG. Figure 2 As shown; the upper mold 1 is provided with an independent first heating pipeline 10 and a first cooling pipeline 11, and the lower mold 2 is provided with an independent second heating pipeline 12 and a second cooling pipeline 13, as shown Figure 3 As shown;

[0077] The feeding mechanism includes a feeding container 3, a stirring element, a temperature control element and a pressurizing element; the feeding container 3 is a double-layer jacket structure, provided with a feeding port, a discharging port, a pressurizing port and a pressure relief port, the discharging port is connected to the injection port 8 of the upper mold 1, the pressurizing port is connected to the pressurizing element, and the pressure relief port is connected to the atmosphere through a pressure relief valve; the stirring element is arranged in the inner cavity of the feeding container 3; the temperature control element is a mold temperature controller, the medium pipeline of the mold temperature controller is connected to the interlayer of the feeding container 3, and is used to control the temperature of the liquid in the feeding container 3;

[0078] The lifting mechanism includes an upper die 1 lifting mechanism and a lower die 2 lifting mechanism, which are respectively used to drive the upper die 1 and the lower die 2 to lift and lower; the upper die 1 lifting mechanism includes a first hydraulic cylinder 5, the piston rod of the first hydraulic cylinder 5 is fixedly connected to the bottom of the upper die seat 4, and the base of the first hydraulic cylinder 5 is connected to the top of the lower frame; the lower die 2 lifting mechanism includes a lifting platform 6 and a second hydraulic cylinder 7 connected in sequence from top to bottom, and the lower die 2 is arranged on a side surface of the lifting platform 6 away from the second hydraulic cylinder 7;

[0079] The flipping mechanism is connected to the upper mold 1 and is used to flip the upper mold 1 by 90°;

[0080] The recovery mechanism comprises a conduit and a liquid recovery container which are connected in sequence, and one end of the conduit away from the liquid recovery container is connected to the glue outlet of the upper mold 1 .

[0081] Application Example 1

[0082] This application example provides a method for preparing a polydicyclopentadiene product using the RTM mold provided in the above embodiment, the method comprising:

[0083] (1) adding the polydicyclopentadiene liquid into the feed container 3 through the feed port, setting the pressure of the feed container 3 to 3 MPa, setting the temperature to 35° C., and mechanically stirring the mixture through a stirring element at a stirring speed of 500 rpm for 30 minutes;

[0084] (2) The upper mold 1 and the lower mold 2 are lifted and lowered by the upper mold 1 lifting mechanism and the lower mold 2 lifting mechanism, and the upper mold 1 is flipped 90 degrees by the flipping mechanism to lay the fiber material in the mold cavity;

[0085] (3) The pressure of the feed container 3 is set to 5 MPa and the temperature is set to 80° C. The stirred polydicyclopentadiene liquid is injected into the mold cavity by pressurization, and this state is maintained for 30 minutes until the inner cavity is filled and fully mixed;

[0086] (4) The heating pipelines in the upper mold 1 and the lower mold 2 are set to heat up at a heating rate of 5°C / min to 150°C, and the temperature is kept at this temperature for 60 minutes for curing;

[0087] (5) The cooling pipes in the upper mold 1 and the lower mold 2 are set to cool at a cooling rate of 5°C / min to 35°C and maintained at this temperature for 30 minutes;

[0088] (6) Open the mold and take out the polydicyclopentadiene product.

[0089] Application Example 2

[0090] This application example provides a method for preparing a polydicyclopentadiene product using the RTM mold provided in the above embodiment, the method comprising:

[0091] (1) adding the polydicyclopentadiene liquid into the feed container 3 through the feed port, setting the pressure of the feed container 3 to 5 MPa, setting the temperature to 35° C., and mechanically stirring the mixture through a stirring element, with a stirring speed of 500 rpm and a stirring time of 30 minutes;

[0092] (2) The upper mold 1 and the lower mold 2 are lifted and lowered by the upper mold 1 lifting mechanism and the lower mold 2 lifting mechanism, and the upper mold 1 is flipped 90 degrees by the flipping mechanism to lay the fiber material in the mold cavity;

[0093] (3) The pressure of the feed container 3 is set to 5 MPa and the temperature is set to 80° C. The stirred polydicyclopentadiene liquid is injected into the mold cavity by pressurization, and this state is maintained for 30 minutes until the inner cavity is filled and fully mixed;

[0094] (4) The heating pipelines in the upper mold 1 and the lower mold 2 are set to heat up at a heating rate of 5°C / min to 150°C, and the temperature is kept at this temperature for 60 minutes for curing;

[0095] (5) The cooling pipes in the upper mold 1 and the lower mold 2 are set to cool at a cooling rate of 5°C / min to 35°C and maintained at this temperature for 30 minutes;

[0096] (6) Open the mold and take out the polydicyclopentadiene product.

[0097] Application Example 2

[0098] This application example provides a method for preparing a polydicyclopentadiene product using the RTM mold provided in the above embodiment, the method comprising:

[0099] (1) adding the polydicyclopentadiene liquid mixed with the inorganic filler into the feed container 3 through the feed port, the pressure of the feed container 3 is set to 5 MPa, the temperature is set to 35° C., and mechanical stirring is performed by a stirring element at a stirring speed of 500 rpm for 30 minutes;

[0100] (2) The upper mold 1 and the lower mold 2 are lifted and lowered by the upper mold 1 lifting mechanism and the lower mold 2 lifting mechanism, and the upper mold 1 is flipped 90 degrees by the flipping mechanism to lay the fiber material in the mold cavity;

[0101] (3) The pressure of the feed container 3 is set to 5 MPa and the temperature is set to 80° C. The stirred polydicyclopentadiene liquid mixed with inorganic fillers is injected into the mold cavity by pressurization, and this state is maintained for 30 minutes until the inner cavity is filled and fully mixed;

[0102] (4) The heating pipelines in the upper mold 1 and the lower mold 2 are set to heat up at a heating rate of 5°C / min to 150°C, and the temperature is kept at this temperature for 60 minutes for curing;

[0103] (5) The cooling pipes in the upper mold 1 and the lower mold 2 are set to cool at a cooling rate of 5°C / min to 35°C and maintained at this temperature for 30 minutes;

[0104] (6) Open the mold and take out the inorganic filler-modified polydicyclopentadiene product.

[0105] In summary, the RTM mold provided by the utility model can be used to simply and quickly prepare polycycloolefin resin, inorganic modified polycycloolefin resin or polycycloolefin resin composite material, thereby improving production efficiency and also improving product quality stability.

[0106] The above description is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. Technicians in the relevant technical field should understand that any changes or substitutions that can be easily thought of by technicians in the relevant technical field within the technical scope disclosed in the present utility model fall within the protection scope and disclosure scope of the present utility model.

Claims

1. An RTM mold, characterized in that: The RTM mold includes an upper mold, a lower mold, a feeding mechanism and a lifting mechanism; The upper mold and the lower mold cooperate to form a mold cavity, and the upper mold is provided with a glue injection port; The feeding mechanism comprises a feeding container, a stirring element, a temperature control element and a pressurizing element; the feeding container is provided with a feeding port, a discharging port, a pressurizing port and a pressure relief port, the discharging port is connected to the injection port of the upper mold, and the pressurizing port is connected to the pressurizing element; the stirring element is arranged in the inner cavity of the feeding container; the temperature control element is used to control the temperature of the liquid in the feeding container; The lifting mechanism comprises an upper die lifting mechanism and a lower die lifting mechanism, which are respectively used to drive the upper die and the lower die to lift and lower.

2. The RTM mold according to claim 1, characterized in that: The upper mold is also provided with a glue outlet, and the glue outlet is connected to a recovery mechanism for recovering the liquid.

3. The RTM mold according to claim 1, characterized in that: Exhaust ports are arranged at four corners of the upper mold and / or the lower mold.

4. The RTM mold according to claim 1, characterized in that: An independent first heating pipeline and a first cooling pipeline are arranged in the upper mold; An independent second heating pipeline and a second cooling pipeline are arranged in the lower mold.

5. The RTM mold according to claim 1, characterized in that: The pressure relief port of the feed container is connected to the atmosphere through a pressure relief valve.

6. The RTM mold according to claim 1, characterized in that: The feed container is a double-layer jacket structure; The temperature control component comprises a mold temperature controller, and a medium pipeline of the mold temperature controller is communicated with the interlayer of the feed container.

7. The RTM mold according to claim 1, characterized in that: The RTM mold also includes an upper frame and a lower frame arranged in sequence from top to bottom; An upper die seat is arranged on the upper frame, and a groove is arranged on the bottom surface of the upper die seat; at least a part of the upper die is fixedly arranged in the groove.

8. The RTM mold according to claim 7, characterized in that: The upper die lifting mechanism comprises a first hydraulic cylinder, a piston rod of the first hydraulic cylinder is fixedly connected to the bottom of the upper die seat, and a base of the first hydraulic cylinder is connected to the top of the lower frame.

9. The RTM mold according to claim 1, characterized in that: The lower die lifting mechanism comprises a lifting platform and a second hydraulic cylinder connected in sequence from top to bottom; the lower die is arranged on a side surface of the lifting platform away from the second hydraulic cylinder, and the lower die is located below the upper die.

10. The RTM mold according to claim 1, characterized in that: The RTM mold further comprises a flipping mechanism, which is connected to the upper mold and is used to flip the upper mold by 90°.

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